阅读说明：本技术 环式装订器及带装订器的活页夹 (Ring binder and loose-leaf binder with binder ) 是由 栗山朋之 清水翔平 于 2020-05-29 设计创作，主要内容包括：提供能够将装订环部维持成开放状态而特别好用的环式装订器及具备它的带装订器的活页夹。本发明是环式装订,具备一对基部、半环部、轴部、轴支承部,前述一对基部向一方向延伸,并且在互相平行的方向上被相邻地配置,前述半环部一体地形成于一对基部的每一个,前述轴部设置于一方的基部,前述轴支承部设置于另一方的基部,经由轴支承部和轴部的转动动作,一对基部彼此进行相对转动位移,由此,半环部的各自的末端部能够在封闭位置和开放位置之间移动,在一对基部的相邻部位的一方设置卡止部,在另一方设置被卡止部,一对基部彼此在将半环部从封闭位置向开放位置切换的方向上相对转动位移的过程中被卡止部被卡止于卡止部。(Provided are a ring binder which can maintain a binding ring part in an open state and is particularly useful, and a binder with the binder. The present invention is a ring binding comprising a pair of bases extending in one direction and arranged adjacent to each other in a direction parallel to each other, half ring portions integrally formed on each of the pair of bases, a shaft portion provided on one of the bases, and a shaft support portion provided on the other of the bases, wherein the pair of bases are rotationally displaced relative to each other by rotational movement of the shaft support portion and the shaft portion, whereby respective distal end portions of the half ring portions are movable between a closed position and an open position, a locking portion provided on one of the adjacent portions of the pair of bases, a locked portion provided on the other, and the locked portion being locked to the locking portion in a process of relative rotational displacement of the pair of bases in a direction for switching the half ring portions from the closed position to the open position.)

1. A ring binder, which is mounted on a loose-leaf binder, is characterized in that,

comprises a pair of base parts, a semi-ring part, a shaft part, and a shaft support part,

the pair of base portions extend in one direction and are arranged adjacent to each other in a direction parallel to each other,

the half ring portion is integrally formed on each of the pair of base portions,

the shaft portion is provided on one base portion,

the shaft support part is provided at the other base part and rotatably supports the shaft part,

the pair of base parts are relatively rotationally displaced with respect to each other by the rotational movement of the shaft support part and the shaft part, whereby the respective distal end parts of the half ring parts provided to the pair of base parts come close to each other and can move between a closed position where the ring-shaped binding ring part is formed and an open position where the respective distal end parts of the half ring parts are separated from each other,

the locking portion is provided on one of adjacent portions of the pair of base portions adjacent to each other, and the locked portion engageable with the locking portion is provided on the other, and the locked portion is locked to the locking portion in a process of relative rotational displacement of the pair of base portions in a direction for switching the half ring portion from the closed position to the open position, and the half ring portion is maintained at the open position in a state where the locked portion is locked to the locking portion.

2. The ring binder of claim 1 wherein,

the part to be locked is a convex part to be locked protruding from the main body surface of one base part, the locking part is formed on the main body surface of the other base part and comprises a locking side concave part capable of receiving the convex part to be locked and a locking side convex part connected with the locking side concave part,

in a process of relative rotational displacement of the pair of base portions in a direction of switching the half ring portion from the closed position to the open position, the engaged-side convex portion passes over the engaging-side convex portion and is received by the engaging-side concave portion, whereby the half ring portion is maintained at the open position, and the engaged-side convex portion in a state of being received by the engaging-side concave portion passes over the engaging-side convex portion to a side opposite to the engaging-side concave portion, whereby the engagement of the engaged portion by the engaging portion is released.

3. The ring binder of claim 2 wherein,

the locking side concave part and the locked side convex part have complementary shapes and sizes.

4. The ring binder of claim 1 or 2 wherein,

the locking portion is formed on one of the pair of bases having the shaft support portion, and the engaged portion is formed on one of the bases having the shaft portion.

5. A loose-leaf binder with a binder is characterized in that,

a cover comprising the ring binder of any one of claims 1 to 4 and a binder fixed end edge to which the ring binder is fixed, the cover extending in a vertical direction.

6. The binder with binder of claim 5 wherein,

the cover comprises a cover hinge part, an upper cover part and a lower cover part,

the cover hinge part extends over the entire width of the cover in a direction orthogonal to the fixed end edge of the binder,

the upper cover portion and the lower cover portion are vertically divided with the cover hinge portion as a boundary and are rotatably connected via the cover hinge portion,

the ring binder has one base portion fixed along a binder fixing end edge of at least one of the upper and lower cover portions, and the other base portion attached to the one base portion,

the upper and lower cover sections can be switched between an unfolded state and a folded state by opening and closing the upper and lower cover sections with the cover hinge section as a boundary.

Technical Field

The present invention relates to a ring binder and a binder with the binder.

Background

Ring binders that are attached to covers of binders (folders) and can bind bound objects such as loose-leaf papers having binding holes punched along one edge are widely known.

Such a ring binder is configured to relatively rotate and displace two substrates parallel to each other, thereby enabling a plurality of pairs of half ring portions (half ring portions) formed on the respective substrates to move between a closed position where the respective distal end portions thereof are engaged with each other to form a ring shape and an open position where the respective distal end portions thereof are separated from each other.

Patent document 1: japanese patent No. 5657822.

Patent document 2: japanese patent No. 5698320.

In the conventional ring binder, after the user opens the binding ring portion, the binding ring portion may be inadvertently closed when the user binds loose-leaf papers or the like to the binding ring portion, and there is room for improvement from the viewpoint of ease of use.

Disclosure of Invention

The present invention has been made in view of the above circumstances, and an object thereof is to provide a ring binder which can maintain a binding ring portion in an open state and is particularly useful, and a binder-equipped binder including the ring binder.

In order to solve the above problem, the present invention adopts the following configuration. That is, the present invention is a ring binder attached to a binder, comprising a pair of base portions extending in one direction and disposed adjacent to each other in a direction parallel to each other, a half ring portion integrally formed on each of the pair of base portions, a shaft portion provided on one of the base portions, and a shaft support portion provided on the other of the base portions and rotatably supporting the shaft portion, wherein the pair of base portions are relatively rotationally displaced with respect to each other by a rotational operation of the shaft support portion and the shaft portion, whereby respective end portions of the half ring portions provided on the pair of base portions come close to each other and are movable between a closed position where the ring-shaped binder ring portion is formed and an open position where the end portions of the half ring portions are separated from each other, the locking portion is provided on one of adjacent portions of the pair of base portions adjacent to each other, and the locked portion engageable with the locking portion is provided on the other, and the locked portion is locked to the locking portion in a process of relative rotational displacement of the pair of base portions in a direction for switching the half ring portion from the closed position to the open position, and the half ring portion is maintained at the open position in a state where the locked portion is locked to the locking portion.

In the ring binder, the engaged portion may be an engaged-side projection projecting from a body surface of one base portion, the engaging portion may be formed on the body surface of the other base portion, and the engaging portion may include an engaging-side recess capable of receiving the engaged-side projection and an engaging-side projection connected to the engaging-side recess, and the engaged-side projection may be received by the engaging-side recess over the engaging-side projection during relative rotational displacement of the pair of base portions in a direction of switching the half ring portion from the closed position to the open position, whereby the half ring portion is maintained in the open position, and the engaged-side projection in a state of being received by the engaging-side recess passes over the engaging-side projection to an opposite side of the engaging-side recess, whereby engagement of the engaged portion by the engaging portion is released.

In the ring binder, the engaging side concave portion and the engaged side convex portion may have complementary shapes and sizes.

In the ring binder, the locking portion may be formed in one of the pair of bases having the shaft support portion, and the engaged portion may be formed in one of the bases having the shaft portion.

Further, the present invention can be specified as a binder-with-binder having a ring binder. For example, the present invention may be a binder with a binder including the ring binder of any one of the above-described embodiments and a cover fixed to the binder, the cover extending in the vertical direction at a binder fixing end edge of the ring binder. In this case, the cover may include a cover hinge portion extending over the entire width of the cover in a direction orthogonal to the edge of the binder fixing end, an upper cover portion and a lower cover portion, the upper cover portion and the lower cover portion being vertically divided with the cover hinge portion as a boundary and being rotatably connected via the cover hinge portion, and the ring binder may be configured such that one base portion is fixed along the binder fixing end edge of at least one of the upper cover portion and the lower cover portion, the other base portion is attached to the one base portion, and the upper cover portion and the lower cover portion are opened and closed with the cover hinge portion as a boundary, thereby switching between the unfolded state and the folded state.

In the binder with a binding machine, the cover hinge portion may be provided at a central position in a vertical direction of the cover.

The binder with binder may further include an inner cover body having a cover mounting portion mounted on a binder fixed end edge side of the cover and a cover main body portion connected to the cover mounting portion so as to extend along the binder fixed end edge in a vertical direction and capable of being disposed so as to face the cover, the cover main body portion may include a 1 st cover hinge portion, an upper cover region portion, and a lower cover region portion, the 1 st cover hinge portion may extend over a whole width in a lateral width direction of the cover main body portion and may be disposed at a position corresponding to the cover hinge portion, the upper cover region portion and the lower cover region portion may be vertically divided by the 1 st cover hinge portion and may be rotatably connected via the 1 st cover hinge portion, and the upper cover region portion and the lower cover region portion may be switched to an expanded state and to an expanded state by opening and closing the 1 st cover hinge portion And a folded state.

In the binder with a binder, the 1 st cover hinge portion may be provided at a central position in a vertical direction of the cover main body portion.

In the binder with a binder, the cover attachment portion may include a 1 st cover attachment portion and a 2 nd cover attachment portion, the 1 st cover attachment portion may be attached to the upper cover side surface portion so as to be slidable within a predetermined range along the binder fixed-end edge, and the 2 nd cover attachment portion may be provided independently of the 1 st cover attachment portion and may be attached to the lower cover side surface portion so as to be slidable within a predetermined range along the binder fixed-end edge.

In the binder with a binder, the 1 st cover attachment portion may have a 1 st slide long hole extending along the binder fixing end edge, the 1 st engagement piece received by the 1 st slide long hole and fixed to the upper cover portion may be relatively displaced along the 1 st slide long hole to be slidable with respect to the upper cover portion, the 2 nd cover attachment portion may have a 2 nd slide long hole extending along the binder fixing end edge, and the 2 nd engagement piece received by the 2 nd slide long hole and fixed to the lower cover portion may be slidable with respect to the lower cover portion by being displaced along the 2 nd slide long hole.

In the binder with a binding machine, the inner cover may further include a 2 nd upper cover hinge portion and a 2 nd lower cover hinge portion, the 2 nd upper cover hinge portion extending along the binder fixed end edge of the cover and rotatably connecting the upper cover region portion to the 1 st cover attachment portion, and the 2 nd lower cover hinge portion extending along the binder fixed end edge of the cover and provided independently of the 2 nd upper cover hinge portion and rotatably connecting the lower cover region portion to the 2 nd cover attachment portion.

In the binder with a binder, the inner cover may have a binding ring insertion opening into which the binding ring portion is inserted, and the binding ring insertion opening may have a vertical dimension along the edge of the binder fixing end, the vertical dimension being capable of suppressing interference with the binding ring portion when the 1 st cover attaching portion and the 2 nd cover attaching portion slide along the edge of the binder fixing end.

In the binder with a binder, the binder may include a 1 st binder provided on the upper cover portion and a 2 nd binder provided on the lower cover portion, and the binder may further include an engaging mechanism for engaging a binding ring portion of the 1 st binder and a binding ring portion of the 2 nd binder with each other when the cover is switched from the unfolded state to the folded-in state, thereby maintaining the cover in the folded-in state.

In the binder with a binder, the engaging mechanism may include an engaging portion provided on one of the 1 st binder and the 2 nd binder and protruding from the binding ring portion in an extending direction of the binder fixing end edge, and the engaging portion may be engaged with a back surface portion of the other of the 1 st binder and the 2 nd binder when the cover is switched from the unfolded state to the folded state.

The binder with a binder may further include a bound object bound to the binding ring portion by forming a plurality of long binding holes along a side of the binding hole extending in the vertical direction, wherein the bound object has a fold line extending from a central position in the vertical direction over the entire width in the lateral width direction, and the long binding holes extend along the side of the binding hole.

Effects of the invention

According to the present invention, a ring binder which can maintain a binding ring portion in an open state and is particularly useful, and a binder provided with the ring binder are provided.

Drawings

Fig. 1 is a perspective view of the binder of embodiment 1 in an unfolded state.

Fig. 2 is a perspective view of the binder according to embodiment 1 in a folded state.

Fig. 3 is a diagram showing a folding operation state of the binder according to embodiment 1.

Fig. 4 is a front view of the binder of embodiment 1 in an unfolded state.

Fig. 5 is a rear view of the opened state of the binder of embodiment 1.

Fig. 6 is a left side view of the unfolded state of the binder of embodiment 1.

Fig. 7 is a right side view of the unfolded state of the binder of embodiment 1.

Fig. 8 is a plan view of the opened state of the binder according to embodiment 1.

Fig. 9 is a bottom view of the opened state of the binder according to embodiment 1.

Fig. 10 is a front view of the binder in the opened position of the inner cover according to embodiment 1.

Fig. 11 is a perspective view of the 1 st stapler.

Fig. 12 is a perspective view of the 1 st stapler.

Fig. 13 is a perspective view of the 1 st stapler.

Fig. 14 is an exploded view of the 1 st base part of the 1 st stapler.

Fig. 15 is a perspective view of the 2 nd stapler.

Fig. 16 is a perspective view of the 2 nd stapler.

Fig. 17 is a perspective view of the 2 nd stapler.

Fig. 18 is an exploded view of the 2 nd base part of the 2 nd stapler.

Fig. 19 is an explanatory diagram for explaining a distance dimension from a height center line to each binding ring portion at a cover of the binder.

Fig. 20 is a diagram illustrating the detailed structure of the 2 nd cover hinge portion and the cover attachment portion of the inner cover body according to embodiment 1.

Fig. 21 is a diagram of the binder according to embodiment 1 in which the inner cover is opened.

Fig. 22 is a view showing a state in which the loose-leaf pages bound to the binding machine of embodiment 1 are opened.

Fig. 23 is a front view of the loose-leaf paper of embodiment 1.

Fig. 24 is a view schematically showing a stacked state of sheets stacked on a cover of a binder in an unfolded state.

Fig. 25 is a perspective view of the 2 nd base of the 2 nd stapler according to embodiment 1.

Fig. 26 is a cross-sectional view of the 2 nd base of embodiment 1.

Fig. 27 is a perspective view of the 1 st base of the 2 nd stapler according to embodiment 1.

Fig. 28 is a partially enlarged view of fig. 27.

Fig. 29 is a cross-sectional view of the 1 st base of embodiment 1.

Fig. 30 is a diagram showing a relationship between the engaged projection and the engaging portion when each of the binding ring portions of the 1 st binder is in the open state.

Fig. 31 is a view showing a relationship between the engaged projection and the engaging portion when each binding ring portion of the 1 st stapler is in a closed state.

Detailed Description

Embodiments of a ring binder and a binder-equipped binder (file) according to the present invention will be described below with reference to the drawings. The following embodiments are illustrative. In the stationery industry, documents are bound with recorded documents, and binders are distinguished from documents by binding and recording unrecorded sheets, and the documents are collectively referred to as "binders" in the present specification. In the present specification, unless otherwise specified, the top and bottom observed and confirmed in fig. 4 are referred to as "top and bottom (height)" of the folder, and the left and right observed and confirmed in the same manner are referred to as "left and right (width)" of the folder.

< embodiment 1 >

Fig. 1 and 2 are perspective views of a binder with binder (hereinafter simply referred to as "binder") 1 according to embodiment 1. Fig. 1 is a perspective view of a binder 1 in an unfolded state. Fig. 2 is a perspective view of the binder 1 in a folded-back state. As will be described in detail later, the binder 1 of the present embodiment can be switched between an unfolded state shown in fig. 1 and a folded state shown in fig. 2. Fig. 3 is a diagram showing a folding operation state in the process of switching the binder 1 according to embodiment 1 between the unfolded state and the folded state.

Fig. 4 is a front view of the binder 1 of embodiment 1 in an unfolded state. Fig. 5 is a rear view of the binder 1 of embodiment 1 in an unfolded state. Fig. 6 is a left side view of the opened state of the binder 1 of embodiment 1. Fig. 7 is a right side view of the unfolded state of the binder 1 of embodiment 1. Fig. 8 is a plan view of the binder 1 according to embodiment 1 in an unfolded state. Fig. 9 is a bottom view of the opened state of the binder 1 according to embodiment 1.

The binder 1 mainly includes a cover 10, a ring binder (hereinafter, simply referred to as "binder") 20 fixed to the cover 10, an inner cover 30 attached to the cover 10, and the like. The cover 10 functions as an outer cover provided on the back surface of the binder 1.

The binder 1 is a so-called loose-leaf binder configured to be capable of binding a bound object (substitute) such as loose-leaf paper or a loose-leaf bag, which has a binding hole perforated along one side, with a binder 20. In the example shown in fig. 1, 3, etc., as an example of the objects to be bound, the binding implement 20 binds the loose-leaf pages S1 and the spacer S2 in a state of being sandwiched between the cover 10 and the inner cover 30.

As will be described in detail later, the inner cover 30 is openably and closably attached to the cover 10, and can be freely switched between a closed state (closed position) in which it overlaps the cover 10 and an open state (open position) in which it does not overlap the cover 10. Fig. 1 to 9 show a state in which the inner cover 30 is in a closed position. In fig. 4 to 9, the loose-leaf sheets S1 and the spacers S2 are not shown. In addition, as the use state of the binder 1, for example, when notes are taken on the loose-leaf papers S1 bound by the binder 20 and the loose-leaf papers S1 are attached and detached, the binder 1 is used in the unfolded state. When the binder 1 is not used, the binder 1 can be folded in half in the plan view by being in the folded state shown in fig. 2. In this way, the binder 1 becomes compact when not in use, thereby improving convenience when carrying the binder 1. Further, when the binder 1 is stored in a bag or the like, the increase in the internal volume of the bag can be suppressed, and therefore, the use is particularly preferable.

[ envelope ]

Fig. 10 is a front view of binder 1 when inner cover 30 of embodiment 1 is in the opened position. In fig. 10, the loose-leaf paper S1 and the spacer S2 are not shown. As shown in fig. 10, the cover 10 has a substantially square shape as a whole, and is defined by an upper edge 11 and a lower edge 12 of the cover 10 extending in the lateral width direction, and a binder fixed end edge 13 and a free end edge 14 extending in the vertical direction (height direction). The binder fixing end edge 13 of the cover 10 is one end edge (side) to which the binder 20 is fixed, and an inner cover 30 is attached near the binder fixing end edge 13. Further, the free end edge 14 of the cover 10 is formed as a free end on the side opposite to the binder-fixed end edge 13. The material for the cover 10 is not particularly limited, and a relatively hard resin such as polypropylene may be used.

The upper edge 11 and the lower edge 12 of the cover 10 extend in parallel and have mutually equal dimensions. The binder-fixed end edge 13 and the free end edge 14 of the cover 10 extend in parallel and have mutually equal dimensions. The binder-fixed end edge 13 and the free end edge 14 of the cover 10 define the top-bottom dimension (height dimension) of the cover 10, and the top edge 11 and the bottom edge 12 define the width dimension of the cover 10. Further, reference numeral 10a is an inner surface (front surface) of the cover 10, and reference numeral 10b is an outer surface (back surface) of the cover 10.

The cover 10 includes an upper cover portion 15, a lower cover portion 16, and a cover hinge portion 17 connecting the upper cover portion 15 and the lower cover portion 16. The cover hinge 17 is a thin strip-shaped square area disposed at the center of the cover 10 in the vertical direction, and divides the area of the cover 10 into upper and lower areas. The cover hinge 17 extends in the lateral direction over the entire width of the cover 10, and the cover hinge 17 is located between the upper cover 15 and the lower cover 16. Reference symbol L1 shown in fig. 10 is a height center line indicating the center position in the vertical direction (height direction) of the cover 10. The height center line L1 extends in a direction orthogonal to the binder fixed end edge 13 and the free end edge 14, and extends in parallel with the upper edge 11 and the lower edge 12. As shown in fig. 10, a 1 st hinge line 171 is formed across the entire width of the cover hinge portion 17 at the boundary portion between the cover hinge portion 17 and the upper cover portion 15, and the upper cover portion 15 is rotatably connected to the cover hinge portion 17 via the 1 st hinge line 171. In addition, at the boundary portion between the cover hinge portion 17 and the lower cover portion 16, a 2 nd hinge line 172 is formed over the entire width of the cover hinge portion 17, and the lower cover portion 16 is rotatably connected to the cover hinge portion 17 via the 2 nd hinge line 172. The 1 st hinge line 171 and the 2 nd hinge line 172 of the cover hinge portion 17 extend in parallel with the height center line L1. In the top-bottom direction of the cover 10, the distance from the height center line L1 to the 1 st hinge line 171 of the cover 10 and the distance from the height center line L1 to the 2 nd hinge line 172 are equal to each other.

The cover 10 configured as described above can perform opening and closing operations of the upper cover part 15 and the lower cover part 16 by rotating the upper cover part 15 and the lower cover part 16 with the 1 st hinge line 171 and the 2 nd hinge line 172 of the cover hinge part 17 as a boundary and separating and contacting the upper cover part 15 and the lower cover part 16 with the cover hinge part 17 as a boundary. That is, by opening and closing the upper cover 15 and the lower cover 16 through the 1 st hinge line 171 and the 2 nd hinge line 172 of the cover hinge 17, the postures thereof can be freely switched to the developed state in which the upper cover 15, the cover hinge 17, and the lower cover 16 are developed to be substantially flush with each other, and the folded state in which the inner surfaces of the upper cover 15 and the lower cover 16 are mutually overlapped in opposition to each other.

The cover 10 is provided with a pen rack 18, a 1 st button 4, a 2 nd button 5, and the like. The holder 18 is a holding member capable of holding a pen such as a fountain pen or a ballpoint pen by insertion. As shown in fig. 1, 3, 9, etc., the 1 st button 4 is disposed near the lower edge 12 of the lower cover portion 16 of the cover 10, and the 2 nd button 5 is disposed near the upper edge 11 of the upper cover portion 15 of the cover 10.

The 1 st buckle 4 has an insertion piece 41, and the 2 nd buckle 5 has a locking opening 51 for locking the insertion piece 41 of the 1 st buckle 4. The 1 st and 2 nd fasteners 4 and 5 of the cover 10 are provided at corresponding positions in the lateral width direction of the cover 10, and in a state where the binder 1 is folded in two as shown in fig. 2, the insertion piece 41 of the 1 st fastener 4 is inserted into the locking opening 51 of the 2 nd fastener 5 to lock the insertion piece 41. This can maintain the binder 1 in a folded state. Further, by pulling out the insertion piece 41 of the 1 st tab 4 from the locking opening 51 of the 2 nd tab 5, the engagement state thereof can be released, and the binder 1 can be switched from the folded-in state to the unfolded state.

[ bookbinding machine ]

Next, a detailed structure of the binder 20 fixed to the binder fixing end edge 13 side of the cover 10 of the binder 1 will be described. As shown in fig. 1 to 3, the binder 20 of the binder 1 includes a 1 st binder 20A and a 2 nd binder 20B provided on the lower cover part 16 and the upper cover part 15 of the cover 10, respectively. The 1 st stapler 20A includes a 1 st base part 21 extending in one direction along the stapler-fixing end edge 13 of the lower cover part 16 of the cover 10, and a plurality of ring-shaped opening/closing ring parts 23, which are annular opening/closing ring parts, arranged at equal intervals in the extending direction of the 1 st base part 21. The 2 nd stapler 20B includes a 2 nd base part 22 extending in one direction along the stapler-fixing end edge 13 of the upper cover part 15 of the cover 10, and a plurality of ring-shaped opening/closing ring bodies 24, which are annular opening/closing ring bodies, arranged at equal intervals in the extending direction of the 2 nd base part 22. The 1 st base part 21 of the 1 st stapler 20A and the 2 nd base part 22 of the 2 nd stapler 20B are formed of a relatively hard resin or the like. As described above, since the binder 1 of the present embodiment is configured to be foldable by opening and closing the upper cover part 15 and the lower cover part 16 with the cover hinge part 17 as a boundary, the 1 st base part 21 and the 2 nd base part 22 of the binder 20 are arranged so as not to straddle the cover hinge part 17 along the binder fixing end edge 13 of the cover 10. The phrase "not to straddle the cover hinge portion 17" as used herein means that both the 1 st base portion 21 and the 2 nd base portion 22 are formed so as not to straddle both regions of the upper cover portion 15 and the lower cover portion 16.

The 1 st base part 21 of the 1 st binding device 20A and the 2 nd base part 22 of the 2 nd binding device 20B are fixed to the outer surface 10B of the lower cover part 16 and the outer surface 10B of the upper cover part 15 of the cover 10, respectively, by fixing mechanisms such as rivets and eyelets. In the example shown in fig. 1 to 3, etc., 4 binding ring portions 23 and 24 are arranged in the 1 st base portion 21 and the 2 nd base portion 22, respectively. Hereinafter, when the 4 binding ring portions 23 arranged on the 1 st base portion 21 of the 1 st binder 20A are distinguished from each other, the 1 st binding ring portion 23A, the 2 nd binding ring portion 23B, the 3 rd binding ring portion 23C, and the 4 th binding ring portion 23D are referred to in order from the outside in the arrangement direction (in order from the side away from the cover hinge portion 17). When the 4 binding ring portions 24 arranged on the 2 nd base portion 22 of the 2 nd stapler 20B are distinguished from each other, the 1 st binding ring portion 24A, the 2 nd binding ring portion 24B, the 3 rd binding ring portion 24C, and the 4 th binding ring portion 24D are referred to in order from the outside in the arrangement direction (in order from the side away from the cover hinge portion 17). The number of the binding ring sections 23 provided in the 1 st base section 21 of the 1 st stapler 20A is not particularly limited. Similarly, the number of the binding ring sections 24 provided to the 2 nd base section 22 of the 2 nd stapler 20B is not particularly limited.

Here, fig. 11 to 13 are perspective views of the 1 st stapler 20A. The 1 st to 4 th binding ring portions 23A to 23D are provided at equal intervals from the 1 st end portion Pe1 side to the 2 nd end portion Pe2 side of the 1 st base portion 21 of the 1 st binding device 20A. The 1 st base part 21 includes a 1 st base part 25 and a 2 nd base part 26 extending in one direction. The 2 nd base 26 extends in one direction, is disposed parallel and adjacent to the 1 st base 25, and is integrally attached to the 1 st base 25. The 1 st base 25 and the 2 nd base 26 of the 1 st stapler 20A are formed by, for example, resin molding.

Fig. 14 is an exploded view of the 1 st base part 21 of the 1 st stapler 20A. Fig. 14 is a perspective view of the 1 st base part 25 and the 2 nd base part 26. The 1 st base portion 25 of the 1 st base portion 21 is a holding member for holding the plurality of half ring portions 231, and has a substrate shape extending in one direction. Reference numeral 25a shown in fig. 14 is an upper surface of the 1 st base 25. A rivet 25c is provided at an appropriate position on the upper surface 25a of the 1 st base 25 in a protruding manner. The 1 st base part 21 of the 1 st binding tool 20A is fixed in a state where the upper surface 25a of the 1 st base part 25 is in contact with the outer surface 10b of the cover by inserting a rivet 25c provided on the upper surface 25a of the 1 st base part 25 through a through hole provided through the lower cover part 16 of the cover 10.

As shown in fig. 14, 4 semi-ring portions 231 having a semi-ring shape are provided at equal intervals in the longitudinal direction (axial direction) of the 1 st base portion 25 of the 1 st base portion 21 in the 1 st base portion 25. The base end side of each semi-ring portion 231 is connected to the outer surface 25b (see fig. 11) of the 1 st base portion 25, and extends substantially in a semi-circular ring shape toward the upper surface 25a of the 1 st base portion 25. When the respective half ring portions 231 are distinguished from each other, the 1 st end Pe1 side of the 1 st base portion 25 is referred to as a 1 st half ring portion 231A, a 2 nd half ring portion 231B, a 3 rd half ring portion 231C, and a4 th half ring portion 231D in this order. Further, engagement claws 2310 are formed at the respective distal end portions of the 1 st half ring portion 231A and the 4 th half ring portion 231D arranged on the outer end side in the longitudinal direction (axial direction) of the 1 st base portion 25. Further, fitting holes 2311 are formed in the distal end portions of the 2 nd half ring portion 231B and the 3 rd half ring portion 231C disposed on the inner side in the longitudinal direction (axial direction) of the 1 st base portion 25, respectively.

As shown in fig. 14, the shaft support portion 250 is provided in the vicinity of the 1 st end Pe1, the vicinity of the 2 nd end Pe2, and the vicinity of the longitudinal center portion of the 1 st base portion 25. Each shaft support 250 has a sliding surface 251 having a substantially cylindrical shape. Hereinafter, the shaft support 250 disposed in the vicinity of the 1 st end Pe1 of the 1 st base 25 is referred to as a "1 st end shaft support 250A", the shaft support 250 disposed in the vicinity of the 2 nd end Pe2 is referred to as a "2 nd end shaft support 250B", and the shaft support 250 disposed in the vicinity of the central portion is referred to as a "central shaft support 250C".

The 2 nd base portion 26 of the 1 st base portion 21 is a holding member for holding the plurality of half ring portions 232, and has a substrate shape extending in one direction. Reference numeral 26a shown in fig. 14 is an upper surface of the 2 nd base 26, and reference numeral 26b is an outer side surface of the 2 nd base 26. Further, a reference numeral Pe3 shown in fig. 14 is a 1 st end portion in the longitudinal direction of the 2 nd base portion 26, and a reference numeral Pe4 is a 2 nd end portion located on the opposite side of the 1 st end portion Pe 3. In the 2 nd base 26, 4 half ring portions 232 having a half ring shape are provided at equal intervals in the longitudinal direction (axial direction) of the 2 nd base 26. The base end side of each semi-ring portion 232 is connected to the outer surface 26b of the 2 nd base portion 26, and extends substantially semi-annularly toward the upper surface 26a of the 2 nd base portion 26. When the respective half ring portions 232 are distinguished from each other, the 1 st end Pe3 side of the 2 nd base portion 26 is referred to as a 1 st half ring portion 232A, a 2 nd half ring portion 232B, a 3 rd half ring portion 232C, and a4 th half ring portion 232D in this order. In addition, an engagement claw 2320 is formed at each distal end portion of the 1 st half ring portion 232A and the 4 th half ring portion 232D disposed on the outer end side in the longitudinal direction (axial direction) of the 2 nd base portion 26, and is engageable with an engagement claw 2310 formed at the distal end portion of the 1 st half ring portion 231A and the 4 th half ring portion 231D of the 1 st base portion 25. Further, at the respective distal end portions of the 2 nd half ring portion 232B and the 3 rd half ring portion 232C disposed on the inner side in the longitudinal direction (axial direction) of the 2 nd base portion 26, a protrusion (not shown) is formed that can be fitted into the fitting hole 2311 formed at the distal end portions of the 2 nd half ring portion 231B and the 3 rd half ring portion 231C of the 1 st base portion 25.

Further, the 2 nd base 26 has a shaft portion 260 extending in the longitudinal direction of the 2 nd base 26. The shaft portion 260 of the 2 nd base portion 26 is a shaft member having a circular cross section, and is supported by the shaft support portions 250 of the 1 st base portion 25 in a shaft-supported manner. Reference numeral 260a shown in fig. 14 is a 1 st end region located at one end of the shaft portion 260, reference numeral 260b is a 2 nd end region located at the other end of the shaft portion 260, and reference numeral 260c is a central region located at the center of the shaft portion 260. The 1 st end region 260A, the 2 nd end region 260B, and the central region 260C of the shaft portion 260 are pivotally supported by the 1 st end shaft support portion 250A, the 2 nd end shaft support portion 250B, and the central shaft support portion 250C of the 1 st base portion 25, respectively.

The 1 st base 25 and the 2 nd base 26 configured as described above are assembled with the 2 nd base 26 on the 1 st base 25 in a state where the 1 st end region 260A, the 2 nd end region 260B, and the central region 260C of the shaft portion 260 of the 2 nd base 26 are respectively supported by the 1 st end shaft support portion 250A, the 2 nd end shaft support portion 250B, and the central shaft support portion 250C of the 1 st base 25. As a result, as shown in fig. 11 to 13, the 1 st base part 21 is formed in which the 1 st base part 25 and the 2 nd base part 26 are integrally combined.

As shown in fig. 11 to 13, in a state where the 1 st base part 25 is attached with the 2 nd base part 26, the half ring parts 231A to 231D of the 1 st base part 25 and the half ring parts 232A to 232D of the 2 nd base part 26 are disposed at corresponding positions in the longitudinal direction of the 1 st base part 21. Each half loop portion 231 of the 1 st base portion 25 and each half loop portion 232 of the 2 nd base portion 26 form a pair of each binding loop portion 23 of the 1 st binder 20A. In fig. 11 to 13, the respective binding ring portions 23 assume a closed posture (closed state) by the respective half ring portions 231 of the 1 st base portion 25 and the respective half ring portions 232 of the 2 nd base portion 26 which are paired being engaged with each other at their distal end portions. In this state, the engagement claws 2310 formed at the distal end portions of the 1 st and 4 th half ring portions 231A and 231D of the 1 st base portion 25 and the engagement claws 2320 formed at the distal end portions of the 1 st and 4 th half ring portions 232A and 232D of the 2 nd base portion 26 are engaged with each other. In addition, in the fitting hole 2311 formed in the distal end portions of the 2 nd half ring portion 231B and the 3 rd half ring portion 231C of the 1 st base portion 25, the projections formed in the distal end portions of the 2 nd half ring portion 232B and the 3 rd half ring portion 232C of the 2 nd base portion 26 are fitted.

On the other hand, from the state in which the binding ring portions 23 of the 1 st stapler 20A are in the closed posture (closed state), for example, the user grips the 1 st and 4 th half ring portions 232A, 232D of the 2 nd base portion 26 with fingers or the like from both sides and bends them inward and sideways, thereby releasing the engagement between the engagement claws 2310, 2320 and rotating the shaft portion 260 of the 2 nd base portion 26 axially rotatably supported by the shaft support portion 250 of the 1 st base portion 25 in the 1 st direction D1 shown in fig. 12. As a result, the 1 st base portion 25 and the 2 nd base portion 26 are relatively rotationally displaced, and the respective half ring portions 231 and 232 of the 1 st base portion 25 and the 2 nd base portion 26 in the pair are moved to the open position where the distal end portions thereof are separated from each other. Thereby, each binding ring portion 23 of the 1 st stapler 20A is switched from the closed posture (closed state) to the open posture (open state). On the other hand, each binding ring portion 23 of the 1 st binder 20A is configured to be rotated from the open posture (open state) to the side opposite to the 1 st direction D1 shown in fig. 12 by rotating the shaft portion 260 of the 2 nd base portion 26 rotatably axially supported by the shaft supporting portion 250 of the 1 st base portion 25, whereby the 1 st base portion 25 and the 2 nd base portion 26 are relatively rotationally displaced. As a result, the respective half ring portions 231 and 232 of the 1 st base portion 25 and the 2 nd base portion 26 move to the closed position where their distal end portions approach each other to form a circular ring shape. Thereby, each binding ring portion 23 of the 1 st stapler 20A is switched from the open posture (open state) to the closed posture (closed state).

Further, as shown in fig. 14, an engagement protrusion 233A protruding toward the adjacent 4 th half ring 231D is provided at the distal end portion of the 3 rd half ring 231C of the 1 st base 25. Further, an engaging projection 233B projecting toward the adjacent 4 th half ring portion 232D is provided at the distal end portion of the 3 rd half ring portion 232C of the 2 nd base portion 26. When each binding ring portion 23 of the 1 st binder 20A is in the closed posture (closed state), the engaging portion 233 is formed by combining the engaging projection 233A located on the distal end side of the 3 rd half ring portion 231C of the 1 st base portion 25 and the engaging projection 233B located on the distal end side of the 3 rd half ring portion 232C of the 2 nd base portion 26.

Next, the 2 nd stapler 20B will be described. Fig. 15 to 17 are perspective views of the 2 nd stapler 20B. The 1 st to 4 th binding ring portions 24A to 24D are provided at equal intervals from the 1 st end portion Pe1 side to the 2 nd end portion Pe2 side of the 2 nd base portion 22 of the 2 nd binding device 20B. The 2 nd base part 22 includes a 1 st base part 25 and a 2 nd base part 26 extending in one direction. The 2 nd base 26 extends in one direction, is disposed parallel and adjacent to the 1 st base 25, and is integrally attached to the 1 st base 25. The 1 st base 25 and the 2 nd base 26 of the 2 nd stapler 20B are formed by, for example, resin molding. The 1 st base portion 25 and the 2 nd base portion 26 of the 2 nd base portion 22 basically have the same structure as the 1 st base portion 25 and the 2 nd base portion 26 of the 1 st base portion 21, and the same reference numerals are given to the structures common to the 1 st base portion 21, and detailed description thereof is omitted.

Fig. 18 is an exploded view of the 2 nd base part 22 of the 2 nd stapler 20B. Fig. 18 is a perspective view of the 1 st base part 25 and the 2 nd base part 26 of the 2 nd base part 22. The 1 st base portion 25 of the 2 nd base portion 22 shown in fig. 18 is a holding member for holding the plurality of half ring portions 241, and has a substrate shape extending in one direction. The 2 nd base part 22 of the 2 nd stapler 20B is fixed in a state where the upper surface 25a of the 1 st base part 25 is in contact with the outer surface 10B of the cover by inserting the rivet 25c provided on the upper surface 25a of the 1 st base part 25 through the through hole provided in the upper cover part 15 of the cover 10.

As shown in fig. 18, 4 semi-ring portions 241 having a semi-ring shape are provided at equal intervals in the longitudinal direction (axial direction) of the 1 st base portion 25 of the 2 nd base portion 22 at the 1 st base portion 25. Each semi-ring portion 241 has a base end side connected to the outer surface 25b of the 1 st base portion 25 and extends substantially in a semi-circular ring shape toward the upper surface 25a of the 1 st base portion 25. When the respective half ring portions 241 are distinguished from each other, the 1 st end Pe1 side of the 1 st base portion 25 is referred to as a 1 st half ring portion 241A, a 2 nd half ring portion 241B, a 3 rd half ring portion 241C, and a4 th half ring portion 241D in this order. The 2 nd base part 22 also has engaging claws 2410 formed at the respective distal end portions of the 1 st half ring part 241A and the 4 th half ring part 241D arranged on the outer end side in the longitudinal direction (axial direction) of the 1 st base part 25. Further, a fitting hole 2411 is formed in the distal end portion of each of the 2 nd half ring portion 241B and the 3 rd half ring portion 241C disposed on the inner side in the longitudinal direction (axial direction) of the 1 st base portion 25. Further, the 1 st base portion 25 of the 2 nd base portion 22 is also provided with a 1 st end portion shaft support portion 250A, a 2 nd end portion shaft support portion 250B, and a center shaft support portion 250C.

The 2 nd base part 26 of the 2 nd base part 22 is a holding member for holding the plurality of half ring parts 242, and has a substrate shape extending in one direction. As shown in fig. 18, in the 2 nd base part 26 of the 2 nd base part 22, 4 half ring parts 242 having a half ring shape are provided at equal intervals in the longitudinal direction (axial direction) of the 2 nd base part 26. The base end side of each semi-ring portion 242 is connected to the outer surface 26b of the 2 nd base 26, and extends substantially semi-annularly toward the upper surface 26a of the 2 nd base 26. When the respective half ring portions 242 are distinguished from each other, the 1 st half ring portion 242A, the 2 nd half ring portion 242B, the 3 rd half ring portion 242C, and the 4 th half ring portion 242D are referred to in order from the 1 st end Pe3 side of the 2 nd base portion 26 of the 2 nd base portion 22. In the 2 nd base part 22, an engaging claw 2420 is formed at each distal end portion of the 1 st half ring part 242A and the 4 th half ring part 242D arranged on the outer end side in the longitudinal direction (axial direction) of the 2 nd base part 26, and is engageable with an engaging claw 2410 formed at the distal end portion of the 1 st half ring part 241A and the 4 th half ring part 241D of the 1 st base part 25. Further, at the respective distal end portions of the 2 nd half ring portion 242B and the 3 rd half ring portion 242C disposed on the inner side in the longitudinal direction (axial direction) of the 2 nd base portion 26, a projection (not shown) is formed that can be fitted into the fitting hole 2411 formed at the distal end portions of the 2 nd half ring portion 241B and the 3 rd half ring portion 241C of the 1 st base portion 25. The engaging protrusions 233A and 233B are not provided in the respective half ring portions 241 and 242 of the 2 nd stapler 20B.

Similarly to the 1 st base part 21, the 2 nd base part 26 of the 2 nd base part 22 also has a shaft part 260, and is pivotally supported by the respective shaft support parts 250 of the 1 st base part 25 of the 2 nd base part 22. Then, the 2 nd base part 26 is attached to the 1 st base part 25 in a state where the 1 st end region 260A, the 2 nd end region 260B, and the central region 260C of the shaft part 260 of the 2 nd base part 26 are respectively supported by the 1 st end shaft support part 250A, the 2 nd end shaft support part 250B, and the central shaft support part 250C of the 1 st base part 25, and as a result, the 2 nd base part 22 is formed as shown in fig. 15 to 17.

In the 2 nd stapler 20B, in a state where the 2 nd base part 26 is attached to the 1 st base part 25, the respective half loop parts 241A to 241D of the 1 st base part 25 and the respective half loop parts 242A to 242D of the 2 nd base part 26 are also arranged at corresponding positions in the longitudinal direction of the 2 nd base part 22. Each half loop portion 241 of the 1 st base portion 25 and each half loop portion 242 of the 2 nd base portion 26 form a pair, and each binding loop portion 24 of the 2 nd binder 20B is formed. In the state shown in fig. 15 to 17, each binding ring portion 24 of the 2 nd stapler 20B takes a closed posture (closed state). In this state, the engaging claws 2410 formed at the distal end portions of the 1 st and 4 th half ring portions 241A and 241D of the 1 st base portion 25 of the 2 nd stapler 20B and the engaging claws 2420 formed at the distal end portions of the 1 st and 4 th half ring portions 242A and 242D of the 2 nd base portion 26 are engaged with each other. In addition, in the fitting hole 2411 formed in the distal end portions of the 2 nd half ring portion 241B and the 3 rd half ring portion 241C of the 1 st base portion 25, the projections formed in the distal end portions of the 2 nd half ring portion 242B and the 3 rd half ring portion 242C of the 2 nd base portion 26 are fitted. On the other hand, from the state in which each binding ring portion 24 of the 2 nd stapler 20B is in the closed posture (closed state), for example, the user grips the 1 st and 4 th ring halves 242A and 242D of the 2 nd base portion 26 with fingers or the like from both sides and bends them inward and sideways, thereby releasing the engagement between the engagement claws 2410 and 2420 and rotating the shaft portion 260 of the 2 nd base portion 26 pivotally supported by the shaft supporting portion 250 of the 1 st base portion 25 of the 2 nd base portion 22 in the 1 st direction D1 shown in fig. 15. As a result, the 1 st base portion 25 and the 2 nd base portion 26 are relatively rotationally displaced, and the respective half ring portions 241, 242 of the 1 st base portion 25 and the 2 nd base portion 26 are moved to the open position where the distal end portions thereof are separated from each other. Thereby, each binding ring portion 24 of the 2 nd stapler 20B is switched from the closed posture (closed state) to the open posture (open state). On the other hand, from the state in which each binding ring portion 23 of the 2 nd stapler 20B is in the open posture (open state), the shaft portion 260 of the 2 nd base portion 26 rotatably axially supported by the shaft supporting portion 250 of the 1 st base portion 25 is rotated to the opposite side of the 1 st direction D1 shown in fig. 15, whereby the 1 st base portion 25 and the 2 nd base portion 26 are relatively rotationally displaced. As a result, the respective half ring portions 241 of the 1 st base portion 25 and the respective half ring portions 242 of the 2 nd base portion 26 in the pair move to the closed position where their tip end portions are close to each other to form a circular ring shape. Thereby, each binding ring portion 24 of the 2 nd stapler 20B is switched from the open posture (open state) to the closed posture (closed state).

As shown in fig. 5 and the like, the stapler 20 configured as described above is fixed to the outer surface 10b along the stapler fixing end edge 13 of the lower cover part 16 in a state where the 1 st end Pe1 of the 1 st base part 21 of the 1 st stapler 20A faces the lower edge 12 side of the cover 10 and the 2 nd end Pe2 faces the cover hinge part 17 side. The 2 nd base part 22 of the 2 nd stapler 20B is fixed to the outer surface 10B along the stapler fixing end edge 13 of the upper cover part 15 in a state where the 1 st end Pe1 faces the upper edge 11 side of the cover 10 and the 2 nd end Pe2 faces the cover hinge part 17 side. Further, the lower cover part 16 of the cover 10 is provided with insertion holes 19A through which the half ring parts 231 of the binding ring parts 23 of the 1 st binder 20A are inserted, and the half ring parts 231 extend toward the inner surface 10A of the cover 10 through the insertion holes 19A. Similarly, an insertion hole 19B for inserting each half ring portion 241 of each binding ring portion 24 of the 2 nd binding tool 20B is bored in the upper cover portion 15 of the cover 10, and each half ring portion 241 extends toward the inner surface 10a of the cover 10 through the insertion hole 19B.

Here, fig. 19 is an explanatory diagram for explaining a distance dimension from the height center line L1 of the cover 10 of the binder 1 to each of the binding ring portions 23 and 24 of the binder 20. Fig. 19 schematically shows a part of the binder 1 when viewed from the front. As described above, the binder 1 can be switched between the unfolded state shown in fig. 1 and the folded state shown in fig. 2. Therefore, the positional relationship between the ring portions 23 and 24 is adjusted so that, when the binder 1 is folded in two, the ring portions 23 of the 1 st binder 20A and the ring portions 24 of the 2 nd binder 20B do not interfere with each other, and the ring portions 23 of the 1 st binder 20A and the ring portions 24 of the 2 nd binder 20B are alternately arranged. The alternation means that the binding ring portions 24 of the 2 nd binding implement 20B are positioned at a gap between the adjacent binding ring portions 24 formed in the 1 st binding implement 20A.

Here, reference numeral Wr in the drawing denotes a width dimension (hereinafter referred to as "binding ring width") of each binding ring portion 23, 24 of the binder 20. The binding ring width Wr may also be the length of each binding ring portion 23, 24 in the direction of the binder-fixed end edge 13 of the cover 10. The ring width Wr of each of the binding ring portions 23 and 24 is set to be equal to the size of the 3 rd binding ring portion 23C of the 1 st binder 20A in which the engaging portion 233 is projected, and the ring width Wr of the 3 rd binding ring portion 23C is larger than the ring widths Wr of the other binding ring portions 23 and 24 by the amount by which the engaging portion 233 projects.

Reference numerals Db 1-Db 4 shown in fig. 19 denote vertical separation dimensions from the height center line L1 of the cover 10 to the outer surface 234 of each binding ring portion 23 (the direction along the binder-fixed end edge 13), and are hereinafter referred to as "binding ring separation dimensions". Db1 is the staple ring exit dimension of the 1 st staple ring portion 23A, Db2 is the staple ring exit dimension of the 2 nd staple ring portion 23B, Db3 is the staple ring exit dimension of the 3 rd staple ring portion 23C, and Db4 is the staple ring exit dimension of the 4 th staple ring portion 23D. Further, the reference numerals Du1 to Du4 denote binding ring separation dimensions in the vertical direction (the direction along the binder-fixed end edge 13) from the height center line L1 of the cover 10 to the outer side surface 244 of each binding ring portion 24. Du1 is the loop clearance dimension for the 1 st loop portion 24A, Du2 is the loop clearance dimension for the 2 nd loop portion 24B, Du3 is the loop clearance dimension for the 3 rd loop portion 24C, and Du4 is the loop clearance dimension for the 4 th loop portion 24D.

Here, the staple ring separating dimension Db1 of the 1 st staple ring portion 23A is set to a dimension larger than the staple ring separating dimension Du1 of the 1 st staple ring portion 24A by the staple ring width Wr. The staple ring leaving dimension Db2 of the 2 nd staple ring portion 23B is set to a dimension larger than the staple ring leaving dimension Du2 of the 2 nd staple ring portion 24B by the staple ring width Wr. The staple ring leaving dimension Db3 of the 3 rd staple ring portion 23C is set to a dimension larger than the staple ring leaving dimension Du3 of the 3 rd staple ring portion 24C by the staple ring width Wr. Further, the staple ring leaving dimension Db4 of the 4 th staple ring portion 23D is set to a dimension larger than the staple ring leaving dimension Du4 of the 4 th staple ring portion 24D by the staple ring width Wr.

By determining the ring separation size of each of the ring portions 23 and 24 as described above, when the binder 1 is folded in two, the inner surfaces 235 of the ring portions 23A to D of the 1 st binder 20A are in contact with the outer surfaces 244 of the ring portions 24A to D of the 2 nd binder 20B. That is, when the binder 1 is folded in two, the upper surfaces 236 of the binding ring portions 23A to D of the 1 st binder 20A and the upper surfaces 246 of the binding ring portions 24A to D of the 2 nd binder 20B are suppressed from colliding with each other. As a result, as shown in fig. 2, the upper cover portion 15 and the lower cover portion 16 of the binder 1 can be firmly folded to a sufficiently close posture.

[ inner cover ]

Next, the inner cover 30 of the binder 1 will be described. As shown in fig. 3, 4, 10, and the like, the inner cover 30 includes a cover main body 34 including an upper cover region 31, a lower cover region 32, and a 1 st cover hinge 33, a cover attachment portion 35, and a 2 nd cover hinge 36. The material forming the inner cover 30 is not particularly limited, and an appropriate resin material can be appropriately used.

The cover body 34 of the inner cover 30 has a substantially square planar shape, and has a lateral width dimension and a height dimension (vertical dimension) that are smaller than the cover 10 by one turn. The cover body portion 34 is defined by an upper edge 341 and a lower edge 342 extending in the lateral width direction, and a connecting end edge 343 and a free end edge 344 extending in the vertical direction (height direction). The upper edge 341 and the lower edge 342 of the cover main body portion 34 extend in parallel and have equal dimensions. The connecting end edge 343 and the free end edge 344 of the cover main body portion 34 extend in parallel and have equal dimensions. The connecting end edge 343 and the free end edge 344 of the cover body 34 define the vertical dimension (height dimension) of the cover body 34, and the upper edge 341 and the lower edge 342 define the horizontal width dimension of the cover body 34.

The cover attachment portion 35 of the inner cover 30 is attached to the inner surface 10a of the cover 10. The inner cover 30 is integrated with the cover 10 via the cover mounting portion 35. The cover attaching part 35 is attached to the cover 10 at a position near the stapler-fixing end edge 13. The manner of attachment to the cover attachment portion 35 of the cover 10 will be described later. Moreover, the 2 nd cover hinge portion 36 of the inner cover 30 rotatably connects the cover main body portion 34 and the cover attachment portion 35. The connecting end edge 343 of the cover main body portion 34 is an edge arranged along the binder fixing end edge 13 side of the cover 10, and is connected to the 2 nd cover hinge portion 36. The free end edge 344 of the mask body portion 34 is an end edge located on the opposite side from the connection end edge 343.

Reference numeral 31a shown in fig. 4 and the like is a front surface of the upper cover region portion 31, and reference numeral 32a is a front surface of the lower cover region portion 32. Note that, reference numeral 31b shown in fig. 10 denotes a back surface of the upper cover region 31, and reference numeral 32b denotes a back surface of the lower cover region 32. The back surfaces 31b, 32b of the upper cover region 31 and the lower cover region 32 face the inner surface 10a of the cover 10 (face the loose-leaf pages S1 when the loose-leaf pages S1 are bound) in a closed state (closed posture) in which the cover main body portion 34 of the inner cover 30 is overlapped with the cover 10.

The 1 st cover hinge portion 33 of the cover main body portion 34 is a hinge region that divides the cover main body portion 34 into upper and lower, i.e., upper and lower cover region portions 31 and 32, and is formed by a folded line (a folded line り Write み) (a hinge line) in the present embodiment. The 1 st cover hinge portion 33 of the cover main body portion 34 is disposed at the center position in the vertical direction (height direction) of the cover main body portion 34, and extends over the entire width in the lateral width direction of the cover main body portion 34. That is, the 1 st cover hinge portion 33 of the cover main body portion 34 is orthogonal to the connection end edge 343 and the free end edge 344 of the cover main body portion 34, and extends in a direction parallel to the upper edge 341 and the lower edge 342. When the cover main body 34 configured as described above is in the closed state (closed posture) of the inner cover 30, the 1 st cover hinge part 33 is substantially overlapped with the front cover hinge part 17 of the cover 10 in the up-down direction.

The hood main body portion 34 configured as described above is divided into the upper and lower hood region portions 31 and 32 by the 1 st hood hinge portion 33 formed in the lateral width direction at the height direction center position of the hood main body portion 34. Therefore, the cover main body portion 34 can be switched between the expanded state and the folded-back state by opening and closing the upper cover region portion 31 and the lower cover region portion 32 with the 1 st cover hinge portion 33 as a boundary.

Next, details of the 2 nd cover hinge portion 36 and the cover attachment portion 35 of the inner cover 30 will be described. Fig. 20 is a diagram illustrating the detailed structure of the 2 nd cover hinge portion 36 and the cover attachment portion 35 of the inner cover 30 according to embodiment 1.

The 2 nd cover hinge portion 36 of the inner cover 30 includes a 2 nd upper cover hinge portion 36A connected to the upper cover region 31 of the cover main body portion 34, and a 2 nd lower cover hinge portion 36B connected to the lower cover region 32. The 2 nd upper cover hinge portion 36A and the 2 nd lower cover hinge portion 36B are independent of each other and are not connected to each other. Note that, in fig. 20, for convenience, hatching is given to the 2 nd upper cover hinge portion 36A and the 2 nd lower cover hinge portion 36B.

The 2 nd upper cover hinge portion 36A and the 2 nd lower cover hinge portion 36B are substantially the same member, and include a 1 st hinge line 361 connected to the cover main body portion 34 and a 2 nd hinge line 362 connected to the cover mounting portion 35. The 1 st hinge line 361 and the 2 nd hinge line 362 are parallel to each other and extend in a direction orthogonal to the 1 st cover hinge portion 33. Further, the 1 st hinge line 361 of the 2 nd upper cover hinge portion 36A is connected to the connection end edge 343 of the upper cover region portion 31. The 1 st hinge line 361 of the 2 nd lower cover hinge portion 36B is connected to the connecting end edge 343 of the lower cover region portion 32.

Cover attachment portion 35 of inner cover 30 has a pair of 1 st cover attachment portion 35A and 2 nd cover attachment portion 35B independent of each other. The 1 st cover attachment portion 35A of the inner cover 30 is slidably attached to the 1 st holding portion 100A fixed to the inner surface 10A of the upper front cover 15 of the cover 10, and is coupled to the 2 nd upper cover hinge portion 36A. The 2 nd cover attachment portion 35B is attached slidably to the 2 nd holding portion 100B fixed to the inner surface 10a of the lower cover surface portion 16 of the cover 10, and is coupled to the 2 nd lower cover hinge portion 36B.

The 1 st cover mounting portion 35A and the 2 nd cover mounting portion 35B have a substantially rectangular shape having a larger height dimension (vertical dimension) than a lateral width dimension. The 1 st cover attachment portion 35A and the 2 nd cover attachment portion 35B have substantially the same structure, and are arranged line-symmetrically with respect to the 1 st cover hinge portion 33 (hinge line) of the cover main body portion 34. Reference numeral 351 denotes a 1 st edge of 1 st cover mounting portion 35A and 2 nd cover mounting portion 35B, and reference numeral 352 denotes a 2 nd edge of 1 st cover mounting portion 35A and 2 nd cover mounting portion 35B. The 1 st and 2 nd end edges 351 and 352 are parallel to each other and extend in a direction perpendicular to the 1 st cover hinge portion 33 (hinge line) of the cover main body portion 34. A1 st edge 351 of the 1 st cover mounting portion 35A and the 2 nd cover mounting portion 35B is connected to a 2 nd hinge line 362 of the 2 nd cover hinge portion 36 (the 2 nd upper cover hinge portion 36A and the 2 nd lower cover hinge portion 36B).

Further, a pair of 1 st sliding long holes 353A, 353A linearly arranged in the up-down direction are bored in the 1 st cover attachment portion 35A so as to penetrate the 1 st cover attachment portion 35A. The pair of 1 st slide long holes 353A, 353A are rectangular long holes extending in the up-down direction of the 1 st cover mounting portion 35A. The pair of 1 st long slide holes 353A, 353A are arranged at the same position in the lateral width direction of the 1 st cover mounting portion 35A. Similarly, a pair of 2 nd long slide holes 353B, 353B aligned in a straight line in the up-down direction are bored in the 2 nd cover attachment portion 35B so as to penetrate the 2 nd cover attachment portion 35B. The pair of 2 nd slide long holes 353B, 353B are rectangular long holes extending in the up-down direction of the 2 nd cover mounting portion 35B. The pair of 2 nd long slide holes 353B, 353B are arranged at the same position in the lateral width direction of the 2 nd cover mounting portion 35B.

Next, the 1 st and 2 nd holding parts 100A and 100B provided in the cover 10 will be described. The 1 st and 2 nd holding parts 100A and 100B have substantially the same structure and are configured to be line-symmetrical with respect to the center line L1 of the cover 10. The 1 st holding portion 100A includes a pair of 1 st engaging pieces 101A, 101A arranged apart from each other in the vertical direction of the upper cover portion 15 of the cover 10, a guide portion 102A disposed inside the pair of 1 st engaging pieces 101A, and a slide inhibiting plate 103A disposed on the upper surfaces of the pair of 1 st engaging pieces 101A, 101A and the guide portion 102A.

The pair of 1 st engagement pieces 101A, 101A and the guide portion 102A of the 1 st holding portion 100A are thin strip-shaped pieces extending in the vertical direction of the upper cover 15 (the extending direction of the stapler fixing edge 13), and are fixed to the inner surface 10A of the upper cover 15. The pair of first engaging pieces 101A, 101A are substantially the same member, and are arranged at the same position in the lateral width direction of the upper side sealing surface portion 15. The long side dimension of each of the 1 st engaging pieces 101A, 101A extending in the vertical direction is set to be smaller than the long axis dimension of each of the 1 st long slide holes 353A, 353A of the 1 st cover attachment portion 35A. As shown in fig. 20, the 1 st engaging pieces 101A and 101A are disposed in a state of being accommodated in the 1 st long slide holes 353A and 353A of the 1 st cover attachment portion 35A. The plate thicknesses of the pair of 1 st engaging pieces 101A, 101A and the guide portion 102A are equal to each other and slightly larger than the plate thickness of the 1 st cover attaching portion 35A. The slide suppressing plate 103A of the 1 st holding portion 100A is a flat plate member having a substantially trapezoidal planar shape, and the lower surface thereof is fixed to the upper surfaces of the pair of 1 st engaging pieces 101A, 101A and the guide portion 102A. The 1 st holding portion 100A configured as described above forms the slide space 104A extending in the vertical direction of the upper cover portion 15 via the lower surface of the slide suppressing plate 103A, the inner surface 10A of the upper cover portion 15, the side surfaces of the pair of 1 st engaging pieces 101A, and the side surface of the guide portion 102A.

The 2 nd holding portion 100B also includes a pair of 2 nd engaging pieces 101B, 101B arranged apart from each other in the vertical direction of the lower cover portion 16 of the cover 10, a guide portion 102B disposed inside the pair of 1 st engaging pieces 101B, and a slide inhibiting plate 103B disposed on the upper surfaces of the pair of 1 st engaging pieces 101B, 101B and the guide portion 102B.

The pair of 2 nd engagement pieces 101B, 101B and the guide portion 102B of the 2 nd holding portion 100B are thin strip-shaped pieces extending in the vertical direction of the lower cover portion 16 (the extending direction of the stapler fixing end edge 13), and are fixed to the inner surface 10a of the lower cover portion 16. The pair of first engaging pieces 101B, 101B are substantially the same member, and are arranged at the same position in the lateral width direction of the lower side sealing surface portion 16. The dimension of the long side of each 2 nd engaging piece 101B, 101B extending in the vertical direction is set to be smaller than the dimension of the long axis of each 2 nd slide hole 353B, 353B of the 2 nd cover attachment portion 35B. As shown in fig. 20, the 2 nd engaging pieces 101B, 101B are disposed in a state of being accommodated in the 2 nd long slide holes 353B, 353B of the 2 nd cover mounting portion 35B. The plate thicknesses of the pair of 1 st engaging pieces 101B, 101B and the guide portion 102B are equal to each other and slightly larger than the plate thickness of the 2 nd cover attaching portion 35B. The slide suppressing plate 103B of the 2 nd holding portion 100B is a flat plate member having a substantially trapezoidal planar shape, and the lower surface thereof is fixed to the upper surfaces of the pair of 1 st engaging pieces 101B, 101B and the guide portion 102B. The 2 nd holding portion 100B configured as described above forms the slide space 104B extending in the vertical direction of the lower cover portion 16 via the lower surface of the slide suppressing plate 103B, the inner surface 10a of the lower cover portion 16, the side surfaces of the pair of 1 st engaging pieces 101B, and the side surface of the guide portion 102B.

The 1 st cover attachment portion 35A of the inner cover 30 receives the 1 st engagement pieces 101A, 101A of the 1 st holding portion 100A in the 1 st long slide holes 353A, and holds the 1 st holding portion 100A in a state in which the band-shaped region 354A located closer to the 2 nd end edge 352 side than the 1 st long slide holes 353A, 353A is disposed in the slide space 104A of the 1 st holding portion 100A. Thus, the 1 st cover attachment portion 35A of the inner cover 30 can slide up and down within a predetermined range with respect to the upper cover 15 by relatively displacing the 1 st engagement pieces 101A, 101A fixed to the upper cover 15 in the longitudinal direction of the 1 st slide long holes 353A, 353A.

Similarly, the 2 nd cover attachment portion 35B of the inner cover 30 receives the 2 nd engaging pieces 101B, 101B of the 2 nd holding portion 100B in the 2 nd long slide holes 353B, and holds the 2 nd holding portion 100B in a state where the band-shaped region 354B located closer to the 2 nd end edge 352 side than the 2 nd long slide holes 353B, 353B is disposed in the slide space 104B of the 2 nd holding portion 100B. Thus, the 2 nd cover attachment portion 35B of the inner cover 30 can slide up and down within a predetermined range with respect to the lower cover portion 16 by relatively displacing the 2 nd engagement pieces 101B, 101B fixed to the lower cover portion 16 of the cover 10 in the longitudinal direction of the 2 nd slide long holes 353B, 353B.

As shown in fig. 20, the inner cover 30 is provided with a binding ring insertion opening 37A for inserting each binding ring portion 24 of the binder 20 and a binding ring insertion opening 37B for inserting each binding ring portion 23 so as to penetrate the inner cover 30. The binding ring insertion opening 37A of the inner cover 30 is formed across the vicinity of the connecting end edge 343 of the upper cover region 31 and the vicinity of the 1 st end edge 351 of the 2 nd upper cover hinge portion 36A and the 1 st cover attachment portion 35A. The binding ring insertion opening 37B of the inner cover 30 is formed across the vicinity of the connecting end edge 343 of the lower cover region 32 and the vicinity of the 1 st end edge 351 of the 2 nd lower cover hinge portion 36B and the 2 nd cover attachment portion 35B.

[ Loose-leaf paper ]

Next, the loose-leaf sheets S1 bound to the binder 1 will be described. Fig. 21 is a diagram of the binder 1 according to embodiment 1 in which the inner cover 30 is opened. Fig. 22 is a diagram showing a state in which the loose-leaf paper S1 bound to the binding machine 20 according to embodiment 1 is folded open and is overlapped with the inner cover 30. Fig. 23 is a front view of a loose-leaf sheet S1 according to embodiment 1. The loose-leaf paper S1 is a paper sheet having a substantially rectangular shape in plan view, and has a size suitable for the binder 1. In the present embodiment, the loose-leaf sheet S1 is a4 in size, but the size is not limited thereto. The loose-leaf sheet S1 has an outer shape defined by an upper side 101 and a lower side 102 extending in the lateral width direction, and a binding hole side 103 and a free end edge 104 extending in the vertical direction (height direction). The upper and lower edges 101 and 102 of the loose-leaf sheet S1 extend in parallel and have equal dimensions. The binding hole side edge 103 and the free end edge 104 extend in parallel and have equal dimensions. Reference numeral 105 in the drawings is the front side of the loose-leaf sheet S1, and reference numeral 106 is the back side of the loose-leaf sheet S1. The loose-leaf paper S1 has a binding hole side edge 103 on the left side and a free edge 104 on the right side as viewed from the front 105 side. The loose-leaf pages S1 have a plurality of binding holes arranged along the binding hole side edges 103. In addition, ruled lines and the like may be printed on the front surface 105 and the back surface 106 of the loose-leaf paper S1.

The loose-leaf paper S1 has a fold line 107 disposed at the center in the vertical direction of the loose-leaf paper S1. The fold-in line 107 extends over the entire width of the loose-leaf sheet S1 in the widthwise direction thereof, and divides the plane of the loose-leaf sheet S1 into an upper region 108 and a lower region 109. The fold-in line 107 extends in a direction orthogonal to the binding hole side edge 103 and the free end edge 104, and extends parallel to the upper side 101 and the lower side 102. The loose-leaf paper S1 thus formed can be relatively rotated so that the upper region 108 and the lower region 109 face each other, with the fold line 107 therebetween. That is, the loose-leaf paper S1 can be folded in half with the fold line 107 as a boundary.

Next, a plurality of binding holes arranged along the binding hole side 103 of the loose-leaf sheet S1 will be described. In the lower region 109 of the loose-leaf sheet S1, 4 binding long holes 111 are arranged along the binding hole side 103. Each long binding hole 111 is formed for inserting each binding ring portion 23 of the 1 st binder 20A of the binder 1. In the upper region 108 of the loose-leaf sheet S1, 4 binding long holes 112 are arranged along the binding hole side edges 103. The long binding holes 112 are formed to allow the binding ring portions 24 of the 2 nd binder 20B of the binder 1 to be inserted therethrough. Seven circular binding holes 113 and 114 are arranged on the binding hole side 103 of the loose-leaf sheet S1 between the binding long hole 111 group and the binding long hole 112 group, respectively. The circular binding holes 113 are disposed in the lower region 109 of the loose-leaf sheet S1, and the circular binding holes 114 are disposed in the upper region 108 of the loose-leaf sheet S1. Note that, in the loose-leaf paper S1 of the present embodiment, the circular binding holes 113 and 114 need not be provided.

In the loose-leaf sheet S1, the long binding holes 111 in the lower region 109 and the long binding holes 112 in the upper region 108 are arranged line-symmetrically with respect to the fold line 107. Further, the circular binding holes 113 in the lower region 109 and the circular binding holes 114 in the upper region 108 are also arranged line-symmetrically with respect to the fold line 107. Reference numeral E1 denotes the vertically inner ends of the long staple holes 111 and 112, and reference numeral E2 denotes the vertically outer ends of the long staple holes 111 and 112. The inner ends E1 of the long binding holes 111 and 112 are near the folding line 107. The outer ends E2 of the long staple holes 111 and 112 are ends distant from the fold line 107. In the present embodiment, the long axis L2 of each of the long binding holes 111 and 112 is inclined with respect to the binding hole side 103. More specifically, the long holes 111 and 112 are inclined with respect to the binding hole side 103 such that the outer end E2 is disposed closer to the binding hole side 103 than the inner end E1, respectively, with respect to the long axis L2. In the present embodiment, the loose-leaf paper S1 is disclosed as an example of the bound object, but a transparent bag made of a resin film having the same binding long holes 111 and 112 and the fold-in line 107 as the loose-leaf paper S1 may be bound to the binder 1.

[ spacers ]

Next, referring to fig. 22, the spacer S2 bound to the binder 1 will be described. The spacer S2 is a paper sheet having a substantially rectangular shape in plan view, and has a size suitable for the binder 1. The spacer S2 is defined by an upper edge 121 and a lower edge 122 extending in the lateral width direction, a binding hole side edge 123 extending in the vertical direction (height direction), and a free end edge 124. The upper side 121 and the lower side 122 of the gasket S2 extend in parallel and have equal dimensions. The binding hole side edge 123 and the free end edge 124 extend in parallel and have equal dimensions. Reference numeral 125 in the drawing is a front face of the spacer S2. The spacer S2 has a binding hole side edge 123 on the left side and a free end edge 124 on the right side as viewed from the front side 125.

The shim S2 has a fold line 127 disposed at the center in the vertical direction of the shim S2. The fold line 127 extends over the entire width of the gasket S2 in the widthwise direction thereof, and divides the plane of the gasket S2 into an upper region 128 and a lower region 129. The fold-in line 127 extends in a direction orthogonal to the binding aperture side edge 123 and the free end edge 124, and extends parallel to the upper edge 121 and the lower edge 122. The spacer S2 thus formed can be relatively rotated with the fold line 127 as a boundary so that the upper region 128 and the lower region 129 face each other. That is, the spacer S2 can be folded in half with the fold line 127 as a boundary.

The spacer S2 has a plurality of binding holes arranged along the binding hole side 123. In the lower region 129 of the spacer S2, 4 binding long holes 131 are arranged along the binding hole side 123. The long binding holes 131 are formed for inserting the binding ring portions 23 of the 1 st binder 20A of the binder 1. In the upper region 128 of the spacer S2, 4 binding long holes 132 are arranged along the binding hole side edge 123. Each of the binding long holes 132 is formed for inserting each of the binding ring portions 24 of the 2 nd binder 20B of the binder 1.

In the spacer S2, the long binding holes 131 in the lower region 129 and the long binding holes 132 in the upper region 128 are arranged line-symmetrically with respect to the fold line 127. Further, the axes of the long binding holes 131 and 132 of the spacer S2 extend parallel to the binding hole side 123. Note that reference numeral E1 denotes the vertically inner ends of the long staple holes 131 and 132, and reference numeral E2 denotes the vertically outer ends of the long staple holes 131 and 132. The inner end E1 of each long binding hole 131, 132 is an end closer to the fold line 127. The outer end E2 of each long binding hole 131, 132 is an end farther from the fold line 127. Further, reference numeral L3 denotes an axis of each of the binding long holes 131 and 132. The long axis L3 of each of the long binding holes 131 and 132 extends parallel to the binding hole side 123.

The binder 1 configured as described above can fold and fold all of the cover 10, the inner cover 30, and the loose-leaf sheets S1 and the spacers S2 as the objects to be bound in the binder 1. This allows the posture of the binder 1 to be freely changed between the unfolded state shown in fig. 1 and the folded state shown in fig. 2. Therefore, when the loose-leaf paper S1 is attached to and detached from the note of the loose-leaf paper S1 bound to the binder 1, the binder 1 can be unfolded and used in a large size in plan view, which is very useful. On the other hand, when the binder 1 is not used, the size of the binder 1 when viewed from the top is made compact by folding the binder in half, thereby improving the convenience when carrying the binder 1. Further, when the binder 1 is stored in a bag or the like, the internal volume of the bag can be suppressed from increasing. That is, according to the binder 1 of the present invention, both convenience in use and convenience when not in use are excellent.

In addition, when the features of each part constituting the binder 1 are mentioned, the 1 st base part 21 and the 2 nd base part 22 of the binder 20 (the 1 st binder 20A and the 2 nd binder 20B) of the binder 1 are arranged so as not to straddle the cover hinge part 17 along the binder fixing end edge 13 of the cover 10. Thus, when the binder 1 (cover 10) is folded in two, the binder 1 can be smoothly folded around the cover hinge 17 without the 1 st base part 21 and the 2 nd base part 22 functioning like the image side lever.

Further, since the cover hinge portion 17 of the cover 10, the 1 st cover hinge portion 33 of the inner cover 30, the folding line 107 of the loose-leaf paper S1, and the folding line 127 of the spacer S2 are disposed at the center positions in the vertical direction (height direction) of these portions, the size of the binder 1 in a plan view can be made the most compact in the folded state.

Further, the binder 20 of the binder 1 is determined such that the ring separating dimension from the height center line L1 of the cover 10 to the binding ring portions 23 and 24 is determined as described above, and therefore, when the binder 1 is folded in two, the upper surfaces 236 of the binding ring portions 23 of the 1 st binder 20A and the upper surfaces 246 of the binding ring portions 24 of the 2 nd binder 20B can be suppressed from colliding with each other. As a result, the upper cover portion 15 and the lower cover portion 16 of the binder 1 can be firmly folded to a posture in which they approach each other sufficiently. That is, when the binder 1 is folded in two, the binding ring portions 23 of the 1 st binder 20A and the binding ring portions 24 of the 2 nd binder 20B do not interfere with each other, and they can be alternately arranged. As a result, the binder 1 can be reliably folded so that the upper cover portion 15 and the lower cover portion 16 of the binder 1 overlap.

Further, according to the binder 20 of the binder 1, the engaging portion 233 is provided as an engaging mechanism for engaging the 3 rd ring portion 23C of the 1 st binder 20A and the 3 rd ring portion 24C of the 2 nd binder 20B with each other when the binder 1 (cover 10) is switched from the unfolded state to the folded state, thereby maintaining the binder 1 (cover 10) in the folded state. Thus, when the binder 1 is folded in two, the engaging portion 233 provided to protrude from the 3 rd binding ring portion 23C of the 1 st binding tool 20A is caused to slip into the back surface side of the 3 rd binding ring portion 24C of the 2 nd binding tool 20B, whereby the engaging portion 233 can be engaged with the back surface Pb of the 3 rd binding ring portion 23C (see fig. 16). As a result, the cover 10 of the binder 1 can be easily locked so as to maintain the folded state. This can keep the posture of the binder 1 folded in two, and can appropriately suppress the binder 1 from being arbitrarily unfolded contrary to the intention of the user of the binder 1. That is, the binder 1 can be prevented from being arbitrarily unfolded inside a bag or the like while the binder 1 is carried in a folded state.

In particular, in the present embodiment, the engagement mechanism for maintaining the binder 1 (cover 10) in the folded state is realized by the engagement of the binding ring portion 23 on the 1 st binder 20A side and the binding ring portion 24 on the 2 nd binder 2B side, and therefore, the present embodiment is advantageous from the viewpoint of manufacturing cost and is excellent in cost efficiency. Further, according to the engaging portion 233, the engaging portion 233 provided in the 3 rd binding ring portion 23C can be automatically engaged with the back surface Pb of the 3 rd binding ring portion 24C only by the action of folding the binder 1 in two, so that the user is not forced to perform a special action only for locking the binder 1 in a folded state, and the binder 1 which is particularly preferable for the user can be provided. However, the engaging mechanism of the present invention is not limited to the specific form of the engaging portion 233, and various forms can be adopted.

In the above embodiment, the engaging portion 233 is formed in the binding ring portion 23 of the 1 st stapler 20A, but the invention is not limited thereto. For example, the engaging portion 233 may be provided on the binding ring portion 24 side of the 2 nd stapler 20B. In this case, the engaging portion 233 may be provided on the outer surface 244 side of the binding ring portion 24 of the 2 nd stapler 20B. For example, by forming the engaging portion 233 on the outer surface 244 side of the 3 rd ring portion 24C of the 2 nd binder 20B, when the binder 1 is folded in two, the engaging portion 233 can be made to slip into the back side of the 3 rd ring portion 23C of the 1 st binder 20A, and can be easily engaged. Obviously, the object of forming the engaging portion 233 is not limited to the 3 rd and 3 rd binding ring portions 23C and 24C, and may be formed in other binding ring portions 23 and 24. The engaging portions 233 may be formed in the plurality of binding ring portions 23 and 24. By forming the engaging portion 233 in the plurality of binding ring portions 23, 24, the locking function of holding the binder 1 in the folded state can be further improved. Further, when the binder 1 is folded in two, the binding ring parts 23 and 24 that are in an opposing positional relationship may be formed with the engaging parts 233, respectively, and the other engaging part 233 may be caused to enter the back side of the one engaging part 233 to be engaged therewith.

In the above embodiment, the example in which the staple ring separating dimensions Db1 to Db4 of the staple ring portions 23 of the 1 st stapler 20A are set to be larger than the staple ring separating dimensions Du1 to Du4 of the staple ring portions 24 of the 2 nd stapler 20B by the staple ring width Wr has been described, but the staple ring separating dimensions Db1 to Db4 may be larger than the staple ring separating dimensions Du1 to Du4 by the staple ring width Wr or more. Thus, when the binder 1 is folded in two, the upper surfaces 236 of the respective binding ring portions 23 of the 1 st binder 20A and the upper surfaces 246 of the respective binding ring portions 24 of the 2 nd binder 20B can be appropriately suppressed from colliding with each other, and the binding ring portions 23 and the binding ring portions 24 can be alternately arranged.

However, when the binder 1 in the unfolded state is folded in two, for example, the user closes the upper cover 15 and the lower cover 16 of the cover 10, and the spacer S2, the loose-leaf paper S1, the cover main body 34, and the like arranged inside the closed portions are sequentially folded in with each other. Here, when the binder 1 is in the unfolded state, as schematically shown in fig. 24, sheets such as the spacer S2, the loose-leaf paper S1, and the cover main body portion 34 are stacked on the inner surface 10a of the cover 10. Fig. 24 is a view schematically showing a stacked state of sheets stacked on the cover 10 of the binder 1 in the unfolded state. As shown in the drawing, the sheets stacked on the cover 10, such as the spacer S2, the loose-leaf paper S1, and the cover body portion 34, are arranged at positions in the sheet stacking direction of the fold-in line 127, the fold-in line 107, and the 1 st cover hinge portion 33, which are the centers of rotation when folded in two, sequentially separated upward in the sheet stacking direction by the thickness of each sheet. In this way, when the spacer S2, the loose-leaf paper S1, and the cover body 34 stacked on the inner surface 10a of the cover 10 are folded in two with the rotation center thereof separated from the inner surface 10a of the cover 10 in the stacking direction, the relative positional relationship of the cover 10 with respect to the respective sheets changes.

For example, when the spacer S2 is folded while the upper area 128 and the lower area 129 are relatively rotated about the folding line 127, the upper area 128 of the spacer S2 tends to slide relative to the upper cover 15 of the cover 10 in a direction away from the height center line L1 along the binder-fixing end edge 13 (hereinafter referred to as "height center line separating direction") and the lower area 129 of the spacer S2 tends to slide relative to the lower cover 16 of the cover 10 in the height center line separating direction.

In contrast, the long binding holes 131 and 132 bound to the spacer S2 of the binder 1 of the present invention extend along the binding hole side edge 123. Therefore, even in a state where the binding ring portions 23 and 24 of the stapler 20 are inserted into the binding long holes 131 and 132, the upper region 128 of the spacer S2 is allowed to move in the direction of separating the height center line with respect to the upper face portion 15 and the lower region 129 is allowed to move in the direction of separating the height center line with respect to the lower face portion 16, respectively, and the spacer S2 can be smoothly folded in two. In other words, the spacer S2 of the present invention has the long binding holes 131 and 132 extending along the binding hole side edge 123, and thus the spacer S2 can be smoothly folded in two at the fold line 127 as a boundary while suppressing interference between the binding ring portions 23 and 24 and the edges of the long binding holes 131 and 132.

In the relationship between the binding ring portions 23 and 24 of the binder 1 and the long binding holes 131 and 132 of the spacer S2, it is preferable that the binding ring portions 23 and 24 are disposed close to the outer ends E2 of the long binding holes 131 and 132 when the binder 1 is in the unfolded state. With this arrangement, when the binder 1 is in the unfolded state, the gap between the spacers S2 in the vertical direction of the binder 1 (cover 10) is small, and the spacers S2 are less likely to move along the binder-fixed-end edge 13. Further, when the spacer S2 is folded in half with the cover 10 of the binder 1, even if the binding ring portions 23 and 24 are relatively moved toward the inner ends E1 of the long binding holes 131 and 132, the positional relationship is set in advance, and thus a sufficient sliding stroke is easily ensured so that the binding ring portions 23 and 24 inserted through the long binding holes 131 and 132 do not collide with the inner ends E1.

Further, when the loose-leaf pages S1 are folded by relatively rotating the upper area 108 and the lower area 109 about the folding line 107, the upper area 108 of the loose-leaf pages S1 tends to slide in the direction of separating the height center line with respect to the upper cover 15 of the cover 10 and the lower area 109 of the loose-leaf pages S1 tends to slide in the direction of separating the height center line with respect to the lower cover 16 of the cover 10 during the folding process. In contrast, the long binding holes 111 and 112 bound to the loose-leaf sheets S1 of the binder 1 of the present invention extend along the binding hole side edges 123. Therefore, even in a state where the binding ring portions 23 and 24 of the stapler 20 are inserted into the binding long holes 111 and 112, the upper side region 108 of the loose-leaf sheet S1 is allowed to move relative to the upper side cover 15 in the height center line separating direction, and the lower side region 109 is allowed to move relative to the lower side cover 16 in the height center line separating direction, whereby the loose-leaf sheet S1 can be smoothly folded in two. In other words, the loose-leaf sheet S1 of the present invention has the long binding holes 111 and 112 extending along the binding hole side 103, and thus the loose-leaf sheet S1 can be smoothly folded in half with the fold line 107 as a boundary while suppressing interference between the binding ring portions 23 and 24 and the edges of the long binding holes 111 and 112. In the loose-leaf sheet S1 of the present invention, the long axis L2 is inclined with respect to the binding hole side 103 so that the outer end E2 of each of the long binding holes 111 and 112 is closer to the binding hole side 103 than the inner end E1. Accordingly, when the loose-leaf paper S1 is smoothly folded in two, interference between the binding ring portions 23 and 24 of the stapler 20 and the edges of the long binding holes 111 and 112 can be more appropriately suppressed.

In the relationship between the binding ring portions 23 and 24 of the binder 1 and the long binding holes 111 and 112 of the loose-leaf paper S1, it is preferable that the binding ring portions 23 and 24 are disposed close to each other on the outer ends E2 side of the long binding holes 111 and 112 when the binder 1 is in the unfolded state. With such an arrangement, when the binder 1 is in the unfolded state, the gap between the loose-leaf pages S1 in the vertical direction of the binder 1 (cover 10) is small, and the loose-leaf pages S1 are less likely to wobble along the binder-fixed-end edge 13. When the loose-leaf pages S1 are folded in half with the cover 10 of the binder 1, even if the binding ring portions 23 and 24 move relatively toward the inner ends E1 of the long binding holes 111 and 112, the positional relationship is set in advance, so that a sufficient sliding stroke is easily ensured so that the binding ring portions 23 and 24 inserted into the long binding holes 111 and 112 do not collide with the inner ends E1.

Further, when the cover main body portion 34 is folded by relatively rotating the upper cover region portion 31 and the lower cover region portion 32 around the 1 st cover hinge portion 33, the upper cover region portion 31 tends to slide in the direction of separating the height center line with respect to the upper cover portion 15 of the cover 10 and the lower cover region portion 32 tends to slide in the direction of separating the height center line with respect to the lower cover portion 16 of the cover 10 during the folding. In contrast, the inner cover 30 of the present invention includes a pair of 1 st cover attachment portion 35A and 2 nd cover attachment portion 35B that are independent of each other, and the 1 st cover attachment portion 35A is attached to the upper cover 15 so as to be slidable within a predetermined range along the stapler attachment end edge 13 of the cover 10, and the 2 nd cover attachment portion 35B is attached to the lower cover 16 so as to be slidable within a predetermined range along the stapler attachment end edge 13. More specifically, the 1 st cover mounting portion 35A has a 1 st long slide hole 353A extending along the stapler fixing end edge 13, and the 1 st engagement piece 101A received by the 1 st long slide hole 353A and fixed to the upper face cover portion 15 is relatively displaced along the 1 st long slide hole 353A, thereby being slidable with respect to the upper face cover portion 15, and the 2 nd cover mounting portion 35B has a 2 nd long slide hole 353B extending along the stapler fixing end edge 13, and the 2 nd engagement piece 101B received by the 2 nd long slide hole 353B and fixed to the lower face cover portion 16 is displaced along the 2 nd long slide hole 353B, thereby being slidable with respect to the lower face cover portion 16.

This allows the relative position of the 1 st long slide hole 353A with respect to the 1 st engagement piece 101A fixed to the upper cover section 15 of the cover 10 to be changed, and the 1 st cover attachment section 35A to be relatively displaced with respect to the upper cover section 15 in the direction in which the height center line is deviated, that is, in the direction in which the upper edge 341 of the upper cover region section 31 approaches the upper edge 11 of the upper cover section 15. This enables the upper cover region 31 of the cover body portion 34 to be displaced relative to the upper cover surface portion 15 in the direction in which the center line is deviated. Similarly, the 2 nd cover attachment portion 35B also allows the relative position of the 2 nd slide long hole 353B of the 2 nd engaging piece 101B fixed to the lower cover section 16 of the cover 10 to be changed, and allows the 2 nd cover attachment portion 35B to be relatively displaced with respect to the lower cover section 16 in the direction in which the height center line is deviated, that is, in the direction in which the lower edge 342 of the lower cover region section 32 of the cover main body portion 34 approaches the lower edge 12 of the lower cover section 16. This enables the lower cover region 32 of the cover body portion 34 to be displaced relative to the lower cover surface portion 16 in the direction away from the center line. As a result, the user can smoothly fold the cover main body 34 in half with the 1 st cover hinge portion 33 as a boundary in conjunction with the folding operation of the upper cover 15 and the lower cover 16 of the cover 10.

Here, in the relationship between the 1 st engagement piece 101A fixed to the upper cover part 15 of the cover 10 and the 1 st long slide hole 353A of the 1 st cover mounting part 35A, it is preferable that the binding ring portions 24 are disposed close to each other on the outer end (end distant from the height center line L1) side in the vertical direction of the 1 st long slide hole 353A when the binder 1 is in the unfolded state. Further, in the relationship between the 2 nd engaging piece 101B fixed to the lower cover portion 16 of the cover 10 and the 2 nd slide long hole 353B of the 2 nd cover mounting portion 35B, it is preferable that each of the binding ring portions 23 is disposed so as to be close to each other on the inner end (the end closer to the height center line L1) side in the vertical direction of the 2 nd slide long hole 353B when the binder 1 is in the unfolded state. With this arrangement, when the binder 1 is in the unfolded state, the gap between the cover main body portions 34 in the vertical direction of the binder 1 (cover 10) is small, and the cover main body portions 34 are less likely to shake along the binder-fixed-end edges 13. Further, when the cover main body portion 34 is folded in two with the cover 10 of the binder 1, the sliding stroke of the 1 st engaging piece 101A relatively moving to the inner end side of the 1 st long slide hole 353A can be sufficiently ensured. Similarly, the slide stroke of the 2 nd engaging piece 101B relatively moving to the inner end side of the 2 nd long slide hole 353B can be sufficiently ensured. Thus, when the user switches the binder 1 from the unfolded state to the folded-in-half state, the cover main body portion 34 can be smoothly folded in half with the 1 st cover hinge portion 33 as a boundary.

Further, the relationship between the binder ring insertion openings 37B, 37A of the inner cover 30 and the binder ring portions 23, 24 is preferably such that the binder ring portions 23, 24 are disposed close to each other on the outer ends (ends farther from the height center line L1) in the vertical direction of the binder ring insertion openings 37B, 37A when the binder 1 is in the expanded state. With this arrangement, a sufficient sliding stroke can be ensured so that, when the cover main body portion 34 of the inner cover body 30 is folded in two with the cover 10 of the binder 1, even if the binding ring portions 23 and 24 are relatively moved toward the inner end sides of the binding ring insertion openings 37B and 37A, the binding ring portions 23 and 24 inserted through the binding ring insertion openings 37B and 37A do not collide with the inner ends.

When the cover main body portion 34 is folded in two as described above, the 1 st cover attachment portion 35A, the 2 nd upper cover hinge portion 36A, and the upper cover region portion 31 of the cover main body portion 34 are integrally displaced relative to the upper front cover portion 15 of the cover 10 in the height centerline separating direction. The 2 nd cover mounting portion 35B, the 2 nd lower cover hinge portion 36B, and the lower cover region portion 32 of the cover main body portion 34 are integrally displaced relative to the upper front cover portion 15 of the cover 10 in the height center line separating direction. In contrast, since the 2 nd upper cover hinge portion 36A and the 2 nd lower cover hinge portion 36B of the inner cover 30 are provided independently of each other, the sliding operation of the upper cover region portion 31 and the lower cover region portion 32 in the direction away from the height center line is smoother.

Further, when the cover body portion 34 of the inner cover 30 is folded, the upper cover region portion 31 (the 1 st cover attaching portion 35A) is relatively displaced in the height center line separating direction with respect to the upper cover surface portion 15, and the relative positional relationship between each binding ring portion 24 of the 2 nd stapler 20B fixed to the upper cover surface portion 15 and the binding ring insertion opening 37A along the stapler fixed end edge 13 changes. Similarly, the relative positional relationship between each binding ring portion 23 of the 1 st binder 20A fixed to the lower cover section 16 and the binding ring insertion opening 37B along the binder fixed-end edge 13 also changes due to the relative displacement of the lower cover region section 32 (the 2 nd cover mounting section 35B) with respect to the lower cover section 16 in the height centerline separating direction. In contrast, in the inner cover 30 of the present embodiment, the vertical dimension (height dimension) of each of the binding ring insertion openings 37A and 37B in the direction of the binder fixing end edge 13 is determined so that the edge of each of the binding ring insertion openings 37A and 37B does not interfere with (collide with) each of the binding ring portions 23 and 24 when the 1 st cover attaching part 35A and the 2 nd cover attaching part 35B slide along the binder fixing end edge 13. By adjusting the vertical dimensions of the staple ring insertion openings 37A and 37B in this manner, when the cover body portion 34 of the inner cover 30 is folded in two, the edges of the staple ring insertion openings 37A and 37B are prevented from colliding with the staple ring portions 23 and 24, and smooth folding operation can be performed.

Next, the mechanism for maintaining the open position of the binding ring portions 23 and 24 of the stapler 20 according to the present embodiment will be described. Fig. 25 is a perspective view of the 2 nd base 26 of the 2 nd stapler 20B (the 2 nd base 22) according to embodiment 1.

The shaft portion 260 of the 2 nd base portion 26 is provided with a pair of engaged protrusions 27, 27 as engaged portions. The engaged projections 27, 27 are provided so as to project from the surface of the shaft portion 260 of the 2 nd base portion 26, and have a substantially triangular shape in a cross section orthogonal to the longitudinal direction (axial direction) of the 2 nd base portion 26. In the example shown in fig. 25, the engaged projections 27 and 27 are respectively disposed between the 1 st end region 260a and the central region 260c, and between the 2 nd end region 260b and the central region 260c of the shaft portion 260.

Fig. 26 is a cross-sectional view of the 2 nd base portion 26 corresponding to the position where the engaged convex portion 27 of embodiment 1 is formed. The cross section of the shaft portion 260 is shown by a broken line in fig. 26. Further, in the cross section of the 2 nd base portion 26 at the position where the engaged projection 27 is formed, a stopper projection 28 projecting from the shaft portion 260 at a position different from the engaged projection 27 is provided. As shown in fig. 26, the engaged convex portion 27 projects obliquely inward and downward from the shaft portion 260 with reference to the upper surface 26a and the outer surface 26b of the 2 nd base portion 26, and the stopper convex portion 28 projects in one direction from the shaft portion 260 with reference to the upper surface 26a and the outer surface 26b of the 2 nd base portion 26.

Fig. 27 is a perspective view of the 1 st base 25 of the 2 nd stapler 20B (the 2 nd base 22) according to embodiment 1. Fig. 28 is a partially enlarged view of fig. 27. The 1 st base 25 is provided with a pair of locking portions 29, 29. Here, the locking portions 29 and 29 are respectively disposed between the 1 st end shaft support portion 250A and the center shaft support portion 250C, and between the 2 nd end shaft support portion 250B and the center shaft support portion 250C in the longitudinal direction (axial direction) of the 1 st base 25. In a state where the 2 nd base 26 is attached to the 1 st base 25, as shown in fig. 13, the locking portions 29, 29 on the 1 st base 25 side and the locked convex portions 27, 27 on the 2 nd base 26 side are arranged at corresponding positions in the longitudinal direction (axial direction) of the 1 st base 21.

In the 1 st stapler 20A of the present invention, the locking portions 29, 29 of the 1 st base 25 and the locked convex portions 27, 27 cooperate to form an open posture maintaining mechanism. Specifically, in the process in which the 1 st base portion 25 and the 2 nd base portion 26 of the 2 nd stapler 20B (the 2 nd base portion 22) relatively rotate and displace the respective half ring portions 231, 232 in the direction of switching from the closed position to the open position, the respective engaged convex portions 27, 27 are respectively engaged with the corresponding engaging portions 29, and the respective half ring portions 231, 232 of the 2 nd stapler 20B are maintained at the open position in a state in which the respective engaged convex portions 27, 27 are engaged with the corresponding engaging portions 29, 29.

Here, fig. 29 is a cross-sectional view of the 1 st base 25 corresponding to a position where the locking portion 29 is formed. Each of the locking portions 29, 29 of the 1 st base 25 has a substantially L-shape in cross section, and includes an upper plate portion 291 and an outer plate portion 292 connected to each other in the L-shape. The outer surface of the upper plate 291 forms a part of the upper surface 25a, and the outer surface of the outer plate 292 forms a part of the outer surface 25 b.

The locking portion 29 includes a locking side recess 293 formed on the back surface (inner surface) side of the upper plate portion 291 and the outer plate portion 292, a locking side protrusion 294 provided to be connected to the locking side recess 293, a locking wall portion 295, and the like. The locking recess 293 is positioned at an inner corner portion connecting the upper plate 291 and the outer plate 292. The locking side protrusion 294 is a convex region formed by the back surface 292a of the outer plate portion 292 being raised from other portions, and is provided continuously to the locking side recess 293. Further, a stopper wall portion 295 is formed on the free end portion side of the outer plate portion 292 on the opposite side to the connection end portion connected to the upper plate portion 291. The stopper wall portion 295 is formed by a part of the back surface 292a of the outer plate portion 292. In the rear surface side region of the outer plate 292 of the locking portion 29, a region adjacent to the locking side protrusion 294 on the opposite side of the locking side recess 293 is referred to as an locking release region 296.

Fig. 30 is a diagram showing a relationship between the engaged projection 27 and the locking portion 29 when each binding ring portion 23 of the 1 st stapler 20A is in an open state. Fig. 31 is a view showing a relationship between the engaged projection 27 and the locking portion 29 when each binding ring portion 23 of the 1 st stapler 20A is in a closed state. As shown in fig. 31, in the 1 st stapler 20A, in a state where the respective binding ring portions 23 are in a closed state, that is, in a state where the distal end portions of the respective half ring portions 231 and 232 are in closed positions forming a circular ring shape so as to be close to each other, the engaged convex portions 27 protruding from the surface of the shaft portion 260 of the 2 nd base portion 26 are received by the engagement release regions 296 of the engagement portions 29 of the 1 st base portion 25 and are loosely fitted. When the binding ring portions 23 of the 1 st stapler 20A are switched from the closed state to the open state, the shaft portion 260 rotates in the 1 st direction D1 as described above, and the 1 st base portion 25 and the 2 nd base portion 26 are relatively rotationally displaced. At this time, the positional relationship between the engaged projection 27 provided integrally with the shaft portion 260 of the 2 nd base 26 and the locking portion 29 provided on the 1 st base 25 side changes from the state shown in fig. 31 to the state shown in fig. 30.

That is, the engaged projection 27 provided integrally with the shaft portion 260 of the 2 nd base 26 moves from the engagement release region 296 side to the engagement recess 293 side over the engagement side projection 294 of the engagement portion 29 due to, for example, elastic bending thereof. As shown in fig. 30, the distal ends of the half ring portions 231 and 232 of the 2 nd stapler 20B are opened in a state where the locked convex portion 27 of the 2 nd base 26 is positioned in the locking side concave portion 293 of the locking portion 29. In addition, when the half ring portions 231 and 232 at the open position are closed as shown in fig. 30, the user holds the half ring portions 231 and 232 with fingers and presses them in a direction to close them. As a result, the engaged projection 27 is bent and passes over the locking side projection 294, the shaft portion 260 is rotated in the 2 nd direction D2 opposite to the 1 st direction D1, and the engaged projection 27 moves to the locking release region 296, whereby the distal end portions of the half ring portions 231, 232 assume the closed posture.

Here, the relationship between the engaged convex portion 27 and the locking side convex portion 294 is such that the engaged convex portion 27 can pass over the locking side convex portion 294 when a user applies an appropriate force, but it cannot be adjusted that the engaged convex portion 27 passes over the locking side convex portion 294 only by the self weight of each of the half ring portions 231 and 232 and by applying vibration to the binder 1. Therefore, the state in which the engaged projection 27 is received by the locking side recess 293 of the engaged portion 29 can be referred to as a state in which the engaged projection 27 is locked to the locking side projection 294, and the half ring portions 231 and 232 (the binding ring portion 23) of the 2 nd stapler 20B can be maintained at the open position in this state.

As shown in fig. 30, the engaged convex portion 27 and the locking side concave portion 293 have complementary shapes and sizes, and in a state where the engaged convex portion 27 is received by the locking side concave portion 293, the 1 st side surface 27a of the engaged convex portion 27 abuts against the locking side convex portion 294, and the 2 nd side surface 27b of the engaged convex portion 27 abuts against the inner surface of the upper plate portion 291. This allows the locked convex portion 27 to be positioned in the locking concave portion 293 without rattling. As a result, the open position can be maintained without causing a rattling in the posture of each of the half ring portions 231, 232 of the 2 nd stapler 20B. Further, in the present embodiment, when each binding ring portion 23 of the 1 st stapler 20A is switched from the closed state to the open state, the stopper protrusion 28 provided so as to protrude from the shaft portion 260 abuts against the stopper wall portion 295 of the locking portion 29 at the timing when the locked protrusion 27 is received by the locking side recess 293 of the locked portion 29, and the rotation of the shaft portion 260 is restricted so that the shaft portion 260 does not rotate in the 1 st direction D1. This can prevent the shaft 260 from coming off the shaft support 250 of the 1 st base 25.

The open posture maintaining mechanism constituted by the locking portion 29 of the 1 st base 25 and the locked convex portion 27 of the 2 nd base 26 described with reference to fig. 25 to 31 is also provided in the 1 st base 25 and the 2 nd base 26 of the 2 nd stapler 20B. The opening posture maintaining mechanism (the engaged projection 27, the locking part 29) of the 2 nd stapler 20B is the same as that of the 1 st stapler 20A, and therefore, a redundant description is omitted.

As described above, in the stapler 20 (the 1 st stapler 20A and the 2 nd stapler 20B) of the present invention, in the process of relative rotational displacement in the direction in which the 1 st base 25 and the 2 nd base 26 switch the respective half ring portions 231 and 232(241 and 242) from the closed position to the open position, the respective half ring portions 231 and 232(241 and 242) are maintained in the open position in the state in which the locked convex portion 27 is locked to the locking portion 29 and the locked convex portion 27 is locked to the locking portion 29. Accordingly, the user can open the binding ring portions 23 and 24 of the binder 1, and can therefore prevent the binding ring portions 23 and 24 from being inadvertently closed during binding of the loose-leaf sheets S1 to the binding ring portions 23 and 24, which is particularly preferable.

In the 1 st stapler 20A and the 2 nd stapler 20B, the locking portion 29 is disposed on the 1 st base 25 side having the shaft support portion 250, and the locked convex portion 27 is disposed on the 2 nd base 26 side having the shaft portion 260. Here, the former is superior from the viewpoint of manufacturing suitability when compared between the case where the locked projecting portion 27 is provided to project from the surface of the shaft portion 260 and the case where the locking portion 29 including the locking-side recess 293 and the locking-side projection 294 is formed on the shaft portion 260. In the 1 st stapler 20A and the 2 nd stapler 20B, the 1 st base 25 side may be provided with the engaged projection 27, and the shaft portion 260 of the 2 nd base 26 may be provided with the locking portion 29 including the locking side recess 293 and the locking side projection 294. In the 1 st binder 20A and the 2 nd binder 20B, the shaft portion 260 may be disposed on the 1 st base 25 side of the cover 10 fixed to the binder 1, and the shaft support portion 250 may be disposed on the 2 nd base 26 side attached to the 1 st base 25.

While the embodiments of the ring binder and the binder-equipped binder (file) including the ring binder according to the present invention have been described above, the present invention is not limited to the above embodiments and can be appropriately modified within the scope not departing from the gist thereof.

For example, although the example in which the 1 st binder 20A and the 2 nd binder 20B are disposed in the upper cover 15 and the lower cover 16 of the cover 10 of the binder 1 has been described, the number of the binders 20 is not particularly limited. In the present embodiment, a case where the binder 20 is applied to the binder 1 that can be switched between the unfolded state and the folded state will be described as an example, but the present invention is not limited thereto. For example, the stapler 20 of the present embodiment may be attached to a general cover, that is, a cover composed of a front cover, a back cover, and a spine connecting the front cover and the back cover. In this case, a single binder 20 may also extend along the spine of the cover. The binder 20 of the present embodiment may be applied to a binder that does not have a spine. Thus, the binder 20 of the present invention can be applied to binders having respective forms.

Description of the reference numerals

Trees or trees or trees or trees or

Seeds, trees, or envelopes

20 seed, seed and bookbinding apparatus

23. Ring part for seeding, seeding and bookbinding

Seeds and trees of 25, seeds and trees of 1

Seeds and trees of 26, 2

Seeds and trees 27

Seed, seed and plant clamping part

30 seed, seed and internal side cover body

Seed, and seed of S1

And S2 seeds, both of which are new seeds and seeds.