阅读说明：本技术 扶手及扶手的安装方法 (Armrest and armrest mounting method ) 是由 内藤贵志 斋藤诚司 于 2020-03-13 设计创作，主要内容包括：本发明提供一种扶手及其安装方法,能够容易地进行扶手杆与支架的临时装配,并且能够牢固地保持合适的临时装配的状态,而且能够实现作业性的提高。在支架(30)的基座部(31)设有扶手杆(10)的端部(15)嵌合的凹部(32),在凹部(32),从底面35突出设置有插嵌于扶手杆(10)的金属管(11)的衬套部(33)。在衬套部(33)的外周面,沿周向隔开预定的间隔设有多个沿突出方向延伸的肋(42),支架(30)制作成至少衬套部(33)由比金属管(11)软质的合成树脂形成,而且使衬套部(33)的通过各肋(42)的顶点的假想外周圆(V3)与金属管(11)的内周相同或比其大。(The invention provides a handrail and a mounting method thereof, which can easily perform temporary assembly of a handrail rod and a bracket, can firmly keep a proper temporary assembly state, and can realize improvement of operability. A recessed part (32) into which the end part (15) of the grab rail (10) is fitted is provided on the base part (31) of the bracket (30), and a bush part (33) that is inserted into the metal pipe (11) of the grab rail (10) is provided in the recessed part (32) so as to protrude from the bottom surface (35). A plurality of ribs (42) extending in the protruding direction are provided on the outer peripheral surface of the bush section (33) at predetermined intervals in the circumferential direction, and the bracket (30) is manufactured such that at least the bush section (33) is formed of a synthetic resin softer than the metal pipe (11), and an imaginary outer peripheral circle (V3) of the bush section (33) passing through the apexes of the ribs (42) is the same as or larger than the inner periphery of the metal pipe (11).)

1. An armrest, comprising: a grab rail, which is coated with a metal tube by using a coating material; and a bracket fixed to the grab rail by a screw and mounted on the mounting surface by a fixing means,

the above-mentioned armrest is characterized in that,

a recessed part for fitting the end part of the grab bar is arranged on the base part of the bracket fixed on the mounting surface,

a bush portion inserted into the metal pipe is provided in the recess portion so as to protrude from a bottom surface,

a plurality of ribs extending in the projecting direction are provided on the outer peripheral surface of the bushing portion at predetermined intervals in the circumferential direction,

the bracket is manufactured such that at least the bushing portion is formed of a synthetic resin softer than the metal pipe, and an imaginary outer circumference of the bushing portion passing through apexes of the ribs is the same as or larger than an inner circumference of the metal pipe.

2. The armrest of claim 1,

the cross-sectional shape of the end of the grab bar and the cross-sectional shape of the recess are formed in a non-perfect circle.

3. The armrest of claim 1 or 2,

a groove portion is provided along the periphery of the bush portion on the bottom surface of the recess,

the rib extends from the groove portion to the outer peripheral surface of the bushing portion in the protruding direction.

4. The armrest of any one of claims 1 to 3,

a marker portion is provided on an outer peripheral portion of the base portion, and the marker portion serves as a marker when a fixing position of the base portion is marked on the attachment surface.

5. The armrest of claim 4,

the outer peripheral portion of the base portion is provided with two marks on each of two imaginary lines passing through the center of the bushing portion.

6. A method of installing an armrest according to any one of claims 1 to 3,

the method for attaching the armrest is characterized by comprising:

a temporary assembly step of inserting the bush portion of the bracket into the metal tube of the grab rail and assembling a temporary assembly of the grab rail which is assembled without fixing the grab rail and the bracket by screws;

a marking step of bringing a base portion of a holder of the temporary handrail assembly into contact with a desired position on the mounting surface, adding a mark of a fixed position of the base portion to the mounting surface, and separating the temporary handrail assembly from the mounting surface;

a punching step of punching an insertion hole for the fixing unit through a mounting surface with reference to the mark marked in the marking step;

a decomposition step of decomposing the temporary handrail assembly used in the marking step into a handrail rod and a bracket;

a bracket fixing step of aligning the base part of the bracket decomposed in the decomposition step with the mark and fixing the bracket to the mounting surface by the fixing means; and

and a grab rail fixing step of inserting the metal pipe of the grab rail decomposed in the decomposition step into the bush part of the bracket fixed on the mounting surface in the bracket fixing step, and fixing the grab rail and the bracket by using screws.

7. The method of installing an armrest according to claim 6,

a marking part is provided on the outer periphery of the base part, the marking part is used as a mark when a mark with a fixed position is added to the mounting surface in the marking process,

in the marking step, a mark is added to a position of the mounting surface corresponding to the marker,

in the bracket fixing step, the mark portion of the bracket is aligned with the mark.

8. The method of installing an armrest according to claim 7,

two of the marking portions are provided on each of two imaginary lines passing through the center of the lining portion on the outer peripheral portion of the base portion,

in the marking step, a mark is added to a position of the mounting surface corresponding to each of the marker portions,

in the punching step, two lines connecting the marks marked in the marking step are drawn, an intersection of the two lines is set as a punching position,

in the bracket fixing step, the mark portion of the bracket is aligned with the marks at four positions.

Technical Field

The present invention relates to a handrail provided on a wall surface or a floor of a toilet, a bathroom, a hall, or the like, and a method of mounting the handrail.

Background

Conventionally, as a handrail installed in a toilet, a bathroom, or the like, it is widely known to install a handrail bar on a wall surface or a floor (hereinafter referred to as "installation surface") via a bracket. For example, in the armrest described in patent document 1, a through hole into which a fixing screw is inserted and a hole-shaped engaging recess that penetrates in the thickness direction are provided in the peripheral wall of the end portion of the armrest pull rod (armrest rod), and a screw hole to which the fixing screw is screwed and an engaging projection that fits into the engaging recess are provided in the main body portion (bushing portion) of the bushing (bracket) (see fig. 2 in particular).

According to the armrest described in patent document 1, the main body portion of the bush is inserted into the end portion of the armrest rod, and the engagement protrusion is fitted into the engagement recess as the engagement means, whereby the armrest rod and the bush can be temporarily assembled before being fixed by the fixing screw.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2009-180047

Disclosure of Invention

Problems to be solved by the invention

In the armrest described in patent document 1, since the engagement recess and the engagement projection are provided as the engagement means in addition to the through hole and the screw hole, the main body portion of the bush and the end portion of the armrest link are increased by the amount corresponding to the engagement means.

In addition, in the armrest described in patent document 1, since it is necessary to pass through the engagement recess for fitting the engagement projection at a correct position, the operation is labor-consuming, and the appearance is deteriorated since two holes, i.e., the through hole and the engagement recess, are formed at the end of the armrest link. Further, since the plate spring member having the convex portion is detachably attached to the outer peripheral surface of the bush as the engaging projection, there is a problem that the cost is increased.

In the engagement mechanism in the armrest described in patent document 1, as the fixing screw is screwed into the screw hole, the depth of the engagement projection fitted into the engagement recess increases, and the force for restricting the movement of the armrest rod in the pull-out direction is small in the temporarily attached state in which the fixing screw is not screwed.

Accordingly, an object of the present invention is to provide a handrail and a method of mounting the same, which can easily perform temporary assembly of a handrail rod and a bracket, can firmly maintain a proper temporary assembly state, and can improve workability.

Means for solving the problems

In order to achieve the above object, a first aspect of the present invention is a handrail including: a grab rail, which is coated with a metal tube by using a coating material; and a bracket fixed to the grab bar by a screw and attached to an attachment surface by a fixing means, wherein a recessed portion into which an end portion of the grab bar is fitted is provided in a base portion of the bracket fixed to the attachment surface, a bush portion inserted into the metal pipe is provided in the recessed portion so as to protrude from a bottom surface, a plurality of ribs extending in a protruding direction are provided on an outer peripheral surface of the bush portion at predetermined intervals in a circumferential direction, the bracket is manufactured such that at least the bush portion is formed of a synthetic resin softer than the metal pipe, and an imaginary outer peripheral circle of the bush portion passing through apexes of the ribs is equal to or larger than an inner periphery of the metal pipe.

According to the first aspect, when the bushing portion of the bracket is inserted into the metal pipe, the bushing portion is inserted into the metal pipe while cutting the top of the rib, and therefore, the temporarily assembled bracket is not shaken by the frictional force between the rib of the bushing portion inserted into the metal pipe and the inner peripheral surface of the metal pipe, and the temporarily assembled state can be firmly maintained. Further, since it is not necessary to provide such an engagement mechanism as in the prior art, it is possible to achieve temporary assembly with a simple configuration and prevent the outside from being damaged.

A second aspect of the present invention is characterized in that a cross-sectional shape of an end portion of the grab bar and a cross-sectional shape of the recess are formed in a non-circular shape.

According to the second feature, the end portion of the grab bar is fitted into the recess of the bracket, so that the grab bar on the bracket can be positioned, and the through hole provided in the grab bar and the screw hole provided in the bracket can be easily aligned. Further, since the movement of the grab bar in the circumferential direction is restricted by fitting the end portion of the grab bar into the recess, the positions of the through hole and the screw hole are not shifted in the circumferential direction.

In the third aspect of the present invention, a groove portion is provided along the periphery of the bush portion in the bottom surface of the recess, and the rib extends from the inside of the groove portion in the protruding direction on the outer peripheral surface of the bush portion.

According to the third feature, although the chips of the rib are generated when the bush portion is inserted into the metal pipe, the chips of the rib can be accommodated in the groove portion. Therefore, the cutting scraps of the rib can not be clamped between the end surface of the end part of the handrail rod and the bottom surface of the concave part, and the problems that the handrail rod shakes when the handrail is installed on the installation surface, or the handrail rod cannot be fixed through the screw due to the position deviation of the through hole of the handrail rod and the screw thread combination hole of the bracket can be prevented.

In a fourth aspect of the present invention, a marking portion that serves as a marker when a fixing position of the base portion is marked on the attachment surface is provided on an outer peripheral portion of the base portion.

According to the fourth feature, the marker is added to the position of the marker, and the bracket is attached to the attachment surface by aligning the marker of the base portion with the marker, whereby the bracket can be attached to an appropriate position.

In a fifth aspect of the present invention, the indicator portion is provided at two positions on each of two imaginary lines passing through the center of the bushing portion in the outer peripheral portion of the base portion.

According to the fifth feature, four marks are added to the mounting surface located at the position of the marker, and two lines connecting the two marks facing each other are drawn. Then, the intersection point of the two lines is a perforated position of the insertion hole of the fixing unit of the fixing bracket, and therefore, the position of the insertion hole can be easily specified, and the insertion hole can be opened at an appropriate position.

A sixth aspect of the present invention is summarized as a method of mounting an armrest having the first to third aspects, including: a temporary assembly step of inserting the bush portion of the bracket into the metal tube of the grab rail and assembling a temporary assembly of the grab rail which is assembled without fixing the grab rail and the bracket by screws; a marking step of bringing a base portion of a holder of the temporary handrail assembly into contact with a desired position on the mounting surface, adding a mark of a fixed position of the base portion to the mounting surface, and separating the temporary handrail assembly from the mounting surface; a punching step of punching an insertion hole for the fixing unit through a mounting surface with reference to the mark marked in the marking step; a decomposition step of decomposing the temporary handrail assembly used in the marking step into a handrail rod and a bracket; a bracket fixing step of aligning the base part of the bracket decomposed in the decomposition step with the mark and fixing the bracket to the mounting surface by the fixing means; and a grab bar fixing step of inserting the metal pipe of the grab bar decomposed in the decomposition step into the bushing part of the bracket fixed on the mounting surface in the bracket fixing step, and fixing the grab bar and the bracket by using screws.

According to the sixth aspect, the mark can be added to an appropriate position where the armrest is actually mounted on the mounting surface by adding the mark to the fixed position of the bracket in a state where the armrest lever and the bracket are temporarily attached.

A seventh aspect of the present invention is directed to a method for manufacturing a display device, wherein a marking portion is provided on an outer peripheral portion of the base portion, the marking portion being a mark when a mark of a fixed position is added to the attachment surface in the marking step, the marking step is performed by adding a mark to the attachment surface at a position corresponding to the marking portion, and the bracket fixing step is performed by aligning the marking portion of the bracket with the mark.

According to the seventh feature, a mark is added to a position on the mounting surface corresponding to the marker, and the marker of the bracket is aligned with the mark, whereby the bracket can be mounted at an appropriate position.

An eighth aspect of the present invention is directed to the method, wherein two marker portions are provided on each of two imaginary lines passing through a center of the bushing portion on an outer peripheral portion of the base portion, a mark is added to a position of the attachment surface corresponding to each marker portion in the marking step, two lines connecting the marks marked in the marking step are drawn in the punching step, an intersection of the two lines is set as a punching position, and the marker portions of the stent are aligned with the four markers in the stent fixing step.

According to the eighth feature, the position of the insertion hole can be easily specified, and the insertion hole can be opened at an appropriate position.

Effects of the invention

According to the present invention, it is possible to provide a handrail and a method of mounting the handrail, which can easily perform temporary assembly of a handrail rod and a bracket, can firmly maintain a suitable state of temporary assembly, and can improve workability.

Drawings

Fig. 1 is a partial sectional plan view showing an installation state of a handrail, which is an example of an embodiment of the handrail of the present invention.

Fig. 2 is a front view of the grab bar of the present embodiment.

Fig. 3 is a perspective view of the stent of the present embodiment.

Fig. 4 is a plan view of the stent of the present embodiment.

Fig. 5 is a partially enlarged sectional view of fig. 1.

Fig. 6 is a process perspective view showing an assembly process of the present embodiment.

Fig. 7 is a process perspective view showing a state where the base portion is brought into close contact with the wall surface in the marking process in the present embodiment.

Fig. 8 is a process perspective view showing a state in which a mark is drawn on a wall surface in the marking process of the present embodiment.

Fig. 9 is a process perspective view showing a piercing process in the present embodiment.

Fig. 10 is a process perspective view showing a grab bar fixing process according to the present embodiment.

Fig. 11 is a perspective view showing a grab rail and a bracket according to a modification of the grab rail of the present invention.

Detailed Description

Hereinafter, a mode of an armrest for carrying out the present invention will be described in detail with reference to the drawings.

As shown in fig. 1, the handrail 1 of the present embodiment is attached to a wall surface W, and includes a handrail 10 and a bracket 30 that supports and fixes the handrail 10. As shown in fig. 1 and 5, the grab bar 10 of the present embodiment includes a straight rod-shaped main body 13 serving as a handle portion, bent portions 14 bent at right angles from both ends of the main body 13 toward the wall surface W, and an end portion 15 extending in a cylindrical shape from a tip end of the bent portion 14 toward the wall surface W, and the end portion 15 is fixed to the bracket 30.

As shown in fig. 2, the grab bar 10 is a member in which the surface of a metal pipe 11 formed of stainless steel, aluminum, iron, or the like is coated with a coating body 12 made of synthetic resin. Further, the cover 12 may be a single layer or a multilayer. The cross section of the metal tube 11 of the grab bar 10 of the present embodiment is a perfect circle, and the cross section of the coating body 12 is an ellipse.

A through hole 16 penetrating in the thickness direction is provided in the end portion 15 of the grab bar 10. In the present embodiment, two through holes 16 are provided so as to face each other in the minor axis direction of the elliptical grab bar 10. The through hole 16 is a shoulder hole formed by spot facing.

As shown in fig. 3, the bracket 30 includes a base portion 31 fixed to the wall surface W, a recess portion 32 into which the end portion 15 of the grab bar 10 is fitted, and a bush portion 33 into which the metal pipe 11 is inserted. In the present embodiment, the holder 30 is integrally molded from synthetic resin such as ABS resin or POM resin, but at least the bush portion 33 may be formed from synthetic resin softer than the metal pipe 11. The base portion 31 and the recess portion 32 may be formed of a synthetic resin different from the liner portion 33, or may be formed of a metal.

As shown in fig. 4, the base portion 31 has an elliptical shape in plan view. A concave mark portion 34 that becomes a mark when the wall surface W marks the fixed position of the base portion 31 is provided on the outer peripheral portion of the base portion 31.

In the outer peripheral portion of the base portion 31, two markers 34 are provided on two imaginary lines V1 and V2 passing through the center C of the bushing portion 33, respectively. In the present embodiment, the long axis of the elliptical base portion 31 coincides with the virtual line V1 and the short axis coincides with the virtual line V2, and the indicator 34 is provided at two positions on the long axis of the base portion 31 (virtual line V1) and the indicator 34 is provided at two positions on the short axis (virtual line V2).

A recess 32 into which the end portion 15 of the grab bar 10 is fitted is provided on the surface of the base portion 31. As shown in fig. 4, the cross-sectional shape (plan view shape) of the recess 32 is an ellipse having the same cross-sectional shape as the end portion 15 of the grab bar 10. The inside of the recess 32 is slightly larger than the outer shape of the end portion 15 so that the end portion 15 of the grab bar 10 can be fitted therein.

A cylindrical bushing portion 33 is provided to protrude from a central portion of a bottom surface 35 of the recess 32. The bushing portion 33 includes a cylindrical portion 36 protruding from the bottom surface 35 of the recess 32 and a truncated cone portion 37 having a diameter decreasing from the cylindrical portion 36 to the tip end. Since the truncated cone-shaped portion 37 can be inserted into the curved portion 14 of the metal pipe 11, the columnar portion 36 of the bushing portion 33 and the end portion 15 of the grab bar 10 can be shortened. Further, the bushing portion 33 is provided with an insertion hole 39 into which a fixing means 38 such as a bolt is inserted, coaxially with the axial center, from the tip end thereof to the back surface of the base portion 31.

Two screw thread coupling holes 40 are provided at positions of the bushing portion 33 symmetrical with respect to the axial center. The screw thread-coupling hole 40 is formed at a position corresponding to the through-hole 16 of the grab bar 10 when the end portion 15 of the grab bar 10 is fitted into the recess 32, and the screw 41 for fixing the bracket 10 and the grab bar 30 is screwed.

Four ribs 42 extending in the protruding direction are provided on the outer peripheral surface of the bush portion 33 at equal intervals in the circumferential direction. A groove portion 43 is provided around the bush portion 33 on the bottom surface 35 of the recess 32. In addition, each rib 42 is provided to extend from the groove portion 43 in the protruding direction on the outer peripheral surface of the bush portion 33. In the present embodiment, each rib 42 is provided from the base end of the hub portion 33 to the tip end of the cylindrical portion 36, and the tip end side portion of each rib 42 is an inclined surface 45 in which the height of the rib 42 decreases toward the tip end.

The bushing portion 33 is formed such that the maximum outer diameter D1 (see fig. 4) of the cylindrical portion 36 where the rib 42 is not provided is smaller than the inner diameter D3 (see fig. 2) of the metal pipe 11 of the grab bar 10. The bushing portion 33 is formed such that a diameter D2 (see fig. 4) of an imaginary outer circumferential circle V3 passing through the apexes of the plurality of ribs 42 is equal to or slightly larger than an inner diameter D3 (see fig. 2) of the metal pipe 11, and is smaller than an outer diameter D4 of the metal pipe 11.

The diameter D2 of the imaginary outer circumference circle V3 is set to the following size: when inserting the bush portion 33 into the metal pipe 11, the bush portion 33 can be inserted into the metal pipe 11 while the metal pipe 11 cuts the rib top portion 44. The groove 43 is set to a size capable of accommodating chips generated by cutting the top 44 of the rib 42.

Next, a method of attaching the handrail 1 to the wall surface W will be described. Hereinafter, the operation of attaching the bracket 30 is the same at one end 15 and the other end 15 of the grab bar 10, and therefore, the overlapping operation will not be described.

< temporary Assembly Process >

A "temporary assembling process" of assembling the handrail temporary assembly 2 in which the handrail 10 and the bracket 30 are fixedly combined without using screws will be described. First, the bush portion 33 of the bracket 30 is inserted into the metal pipe 11 of the grab bar 10 (fig. 6). At this time, when the main body portion 36 of the bushing portion 33 provided with the rib 42 is pushed into the metal pipe 11, the main body portion 36 of the bushing portion 33 is inserted into the metal pipe 11 while the top portion 44 of the rib 42 is cut. Then, the bush 33 is further pushed in, so that the end 15 of the grab bar 10 is fitted into the recess 32 of the bracket 30. At this time, since the sectional shape of the recess 32 and the sectional shape of the end 15 of the grab bar 10 are both the same elliptical shape, the end 15 of the grab bar 10 fits into the recess 32 when the circumferential directions of the two are the same. Chips generated by cutting the top portion 44 of the rib 42 are accommodated in the groove portion 46 provided in the bottom surface 35 of the recess 32, and the end surface of the end portion 15 of the grab bar 10 abuts against the bottom surface 35 of the recess 32. Then, it is confirmed that the through hole 16 of the grab bar 10 and the screw thread coupling hole 40 of the bushing portion 33 are aligned.

The grab rail 10 and the support 30 may be temporarily assembled at a factory or the like and delivered in a state of the temporary grab rail assembly 2, or the grab rail 10 and the support 30 may be delivered in a separate state and the temporary grab rail assembly 2 may be assembled at an installation site or the like.

< marking Process >

Next, a "marking process" of adding a mark at a position fixed to the base portion 31 to the wall surface W will be described. The handrail temporary assembly 2 assembled in the temporary assembly step is held, and the back surface of the base portion 31 is brought into contact with the wall surface W at a desired position (fig. 7). In this state, a mark M (fig. 8) is added to the wall surface W at a position corresponding to the marker 34 by a writing tool or a marking tool. The marking is performed for all the markers 34. Then, the handrail temporary assembly 2 is separated from the wall surface W.

< punching Process >

Next, a "punching step" of forming the insertion hole H in the wall surface W with reference to the mark M will be described. Two lines L1 and L2 are drawn to connect the marks M facing each other among the marks M at four positions marked in the marking step. The intersection point P of these two lines L, L2 is the piercing position of the insertion hole H of the fixing unit 38 (fig. 9). Then, a drilling tool such as a drill is used to penetrate through the insertion hole H so as to center the intersection point P.

< decomposition Process >

Next, a "disassembly process" of disassembling the handrail temporary assembly 2 into the handrail shaft 10 and the bracket 30 will be described. The bushing portion 33 of the bracket 30 inserted into the metal pipe 11 is pulled out from the metal pipe 11, and the temporary handrail assembly 2 used in the marking process is decomposed into the handrail rod 10 and the bracket 30. The decomposition step may be performed between the marking step and the punching step, or may be performed between the punching step and the holder fixing step.

< procedure for fixing scaffold >

Next, a "bracket fixing step" of fixing the bracket 30 to the wall surface W by the fixing means 38 will be described. The marker 34 of the bracket 30 disassembled in the disassembling step is aligned with the four marks M marked on the wall surface W, and the bracket 30 is fixed to the wall surface W by fixing means 38 such as bolts.

< procedure for fixing grab bar >

Next, a "grab rail fixing process" in which the grab rail 10 and the bracket 30 are fixed by screws will be described. The metal pipe 11 of the grab bar 10 released in the disassembly process is inserted into the bush portion 33 of the bracket 30 fixed to the wall surface W in the bracket fixing process, the end portion 15 of the grab bar 10 is fitted into the recess 32 of the bracket 30, and the end surface of the end portion 15 of the grab bar 10 is brought into contact with the bottom surface 35 of the recess 32. Then, since the through hole 16 of the grab bar 10 and the screw screwing hole 40 of the bushing 33 are aligned, the screw 41 is inserted into the through hole 16, the screw 42 is screwed into the screw screwing hole 40, and the grab bar 10 and the bracket 30 are fixed (fig. 10). In this way, the armrest 1 of the present embodiment is attached to the wall surface W.

According to the handrail 1 of the present embodiment described above, since the bushing portion 33 of the bracket 30 is inserted into the metal pipe 11 while cutting the top portion 44 of the rib 42, the temporarily assembled bracket 10 is not shaken by the frictional force between the rib 42 of the bushing portion 33 inserted into the metal pipe 11 and the inner circumferential surface of the metal pipe 11, and the temporarily assembled state can be firmly maintained. In addition, since the temporary attachment does not require the conventional engagement mechanism, the temporary attachment can be achieved with a simple structure and the appearance is not impaired. Further, since the inclined surface 45 of each rib 42 is formed so that the virtual outer circumferential circle V3 is reduced in diameter as it goes toward the tip end, the cylindrical portion 36 of the bush portion 33 is easily inserted into the metal pipe 11.

By performing the marking step using the handrail temporary assembly 2 temporarily assembled in this manner, the mark M can be added to an appropriate position where the handrail 1 is actually attached to the wall surface W. Further, since the bracket 30 does not rattle when the back surface of the base portion 31 of the bracket 30 is brought into contact with the wall surface W, the mark M can be added at an accurate position.

Further, since the chips of the rib 42 generated when the bushing portion 33 is inserted into the metal pipe 10 are accommodated in the groove portion 43 provided in the bottom surface 35 of the recess 32, it is possible to prevent the problem that the chips of the rib 42 are caught between the end surface of the end portion 15 of the grab bar 10 and the bottom surface 35 of the recess 32 to cause the grab bar 10 attached to the wall surface W to be shaken or the through hole 16 of the grab bar 10 and the screw screwing hole 40 of the bracket 30 are displaced to be unable to be fixed by the screw 41.

Since the cross-sectional shape of the end portion 15 of the grab bar 10 and the cross-sectional shape of the recess 32 of the bracket 30 are both the same elliptical shape, the grab bar 10 of the bracket 30 can be positioned by fitting the end portion 15 of the grab bar 10 into the recess 32 of the bracket 30, and the through hole 16 of the grab bar 10 and the screw-fastening hole 40 of the bracket 30 can be easily aligned. Further, since the end portion 15 of the grab bar 10 is fitted in the recess 32, the circumferential movement of the grab bar 10 is restricted, and therefore, the positions of the through hole 16 and the screw engaging hole 40 do not deviate in the circumferential direction.

The indicator 34 is provided at two places on each of two imaginary lines V1 and V2 passing through the center C of the bushing 33 on the outer peripheral portion of the base portion 31, and therefore, the position of the insertion hole H can be easily specified in the punching step, and the insertion hole H can be provided through an appropriate position. Further, in the bracket fixing step, the bracket 30 can be attached to an appropriate position by aligning the four marks M marked on the wall surface W with the mark 34 of the bracket 30.

Next, a modification of the armrest of the present embodiment will be described with reference to fig. 11. Only the differences from the above-described embodiments will be described below.

In the case where the end portion of the grab bar can be formed long according to the shape of the grab bar, the bushing portion of the bracket may be a long cylindrical portion without the truncated cone portion. In the modification, the end portion 71 of the grab bar 70 and the bushing portion 91 of the bracket 90 are longer than those of the present embodiment, and thus a plurality of through holes 72 are provided in parallel in the axial direction in the end portion 71 of the grab bar 70, and a plurality of screw-fastening holes 92 are provided in parallel in the protruding direction in the bushing portion 91.

The present invention is not limited to the above-described embodiments, and can be modified as appropriate within a scope not departing from the gist of the present invention.

In the present embodiment, the armrest 1 is assembled from one grab rail 10 and two brackets 30, but the present invention may be applied to an armrest assembled from a plurality of grab rails and a plurality of brackets. In the present embodiment, the grab bar 1 is attached to the wall surface W by using all the brackets 30 of the present invention, but a part of the brackets of the present invention may be used, and the remaining part may be a known bracket. The shape of the grab bar 30 is not limited to the present embodiment, and the present invention can be applied to grab bars having various shapes such as a substantially L shape and a substantially U shape. The number and shape of the ribs 42 are not limited to those of the present embodiment as long as they can hold the bracket 30 when the grab bar 10 and the bracket 30 are temporarily assembled. The number and shape of the groove portions 43 are not limited to those of the present embodiment as long as the end surface of the grab bar 10 can abut against the bottom surface 35 of the recess 32 while receiving the chips of the rib 42 when the bushing portion 33 of the bracket 30 is inserted into the metal pipe 11 of the grab bar 10. In the present embodiment, the indicator 34 has a concave shape, but may be formed into a convex shape, for example. In the present embodiment, the cross section of metal pipe 11 is a perfect circle, the cross section of cladding 12 is an ellipse, and the cross sections of metal pipe 11 and cladding 12 are dissimilar, but both the cross sections of metal pipe 11 and cladding 12 may be similar to each other in an elliptical shape. It is preferable that the cross-sectional shape of the end portion 15 of the grab bar 10 and the cross-sectional shape of the recess 32 of the bracket 30 are non-circular so that the movement of the grab bar 10 in the circumferential direction is restricted when the end portion 15 of the grab bar 10 is fitted into the recess 32, but the cross-sectional shapes of the end portion 15 of the grab bar 10 and the recess 32 of the bracket 30 may be circular.

Availability in production

The present invention can be used for an armrest to be mounted in a toilet, a bathroom, a hall, or the like.

Description of the symbols

1-handrail, 2-handrail temporary assembly body, 10, 70-handrail rod, 11-metal tube, 12-cladding body, 13-main body, 14-curved part, 15, 71-end part, 16, 72-through hole, 30, 90-bracket, 31-base part, 32-recess, 33, 91-bushing part, 34-mark part, 35-bottom surface, 36-cylindrical part, 37-truncated cone-shaped part, 38-fixing unit, 39-insertion hole, 40, 92-screw thread coupling hole, 41-screw, 42-rib, 43-groove part, 44-top part, 45-inclined surface, W-wall surface, H-insertion hole.