阅读说明：本技术 收伞长度短的自动开收多折伞 (Automatic opening and closing multi-folding umbrella with short umbrella closing length ) 是由 黄自力 于 2020-06-02 设计创作，主要内容包括：一种收伞长度短的自动开收多折伞,其伞骨包括：由内至外依次连接的第一伞骨(41)、第二伞骨(42)和第三伞骨(43),铰接于第一伞骨(41)中部的次骨(44),两端分别与次骨(44)和第二伞骨(42)连接的连杆(45),两端分别与第一伞骨(41)和第三伞骨(43)连接的拉杆(46)；第一伞骨(41)的外端部沿与第二伞骨(42)的连接点向外延伸,拉杆(46)位于第二伞骨(42)下方,该拉杆(46)内端与该第一伞骨(41)的连接点位于第一伞骨(41)与第二伞骨(42)连接点的外侧,该拉杆(46)外端与第三伞骨(43)的连接点位于第二伞骨(42)与第三伞骨(43)连接点的外侧。本发明的多折伞展开后开伞尺寸较大,而折叠后的长度较短,方便随身携带。(An automatic opening and closing multi-folding umbrella with short umbrella closing length, the umbrella frame comprises: a first rib (41), a second rib (42) and a third rib (43) which are sequentially connected from inside to outside, a secondary rib (44) which is hinged at the middle part of the first rib (41), a connecting rod (45) of which two ends are respectively connected with the secondary rib (44) and the second rib (42), and a pull rod (46) of which two ends are respectively connected with the first rib (41) and the third rib (43); the outer end of the first umbrella rib (41) extends outwards along the connection point of the first umbrella rib and the second umbrella rib (42), the pull rod (46) is positioned below the second umbrella rib (42), the connection point of the inner end of the pull rod (46) and the first umbrella rib (41) is positioned outside the connection point of the first umbrella rib (41) and the second umbrella rib (42), and the connection point of the outer end of the pull rod (46) and the third umbrella rib (43) is positioned outside the connection point of the second umbrella rib (42) and the third umbrella rib (43). The multi-folding umbrella has larger size after being unfolded and shorter length after being folded, and is convenient to carry.)

1. An automatic opening and closing multi-folding umbrella with short umbrella closing length comprises: the umbrella comprises a middle rod (1) formed by sleeving a plurality of pipe fittings in a sliding manner, an upper nest (21) fixed at the top of the middle rod (1), a lower nest (22) sleeved in the middle rod (1) in a sliding manner, an umbrella handle (3) arranged at the bottom of the middle rod (1), and umbrella ribs (4) connected with the upper nest (21) and the lower nest (22); the umbrella rib (4) comprises: a first rib (41), a second rib (42) and a third rib (43) which are sequentially connected from inside to outside, a secondary rib (44) which is hinged at the middle part of the first rib (41), a connecting rod (45) with two ends respectively connected with the secondary rib (44) and the second rib (42), and a pull rod (46) with two ends respectively connected with the first rib (41) and the third rib (43); the method is characterized in that:

the outer end of first rib (41) is along outwards extending with the tie point of second rib (42), pull rod (46) are located second rib (42) below, and the tie point of this pull rod (46) inner and this first rib (41) is located the outside of first rib (41) and second rib (42) tie point, and the tie point of this pull rod (46) outer end and third rib (43) is located the outside of second rib (42) and third rib (43) tie point.

2. The automatic opening and closing multi-fold umbrella with short umbrella closing length as claimed in claim 1, wherein: first rib (41) and time bone (44) adopt the aluminum alloy groove bone, second rib (42) adopt glass fiber or engineering plastic material, are equipped with a plurality of fretwork holes (421) along length direction on it.

3. The automatic opening and closing multi-fold umbrella with short umbrella-closing length as claimed in claim 1, wherein said handle (3) comprises: the umbrella comprises a shell (31), an inner seat (32) arranged in the inner cavity of the shell (31), a folding and unfolding control device used for controlling the folding and unfolding of the umbrella and a safety device used for preventing the middle rod (1) from rebounding when being compressed.

4. The automatic opening and closing multi-fold umbrella with short umbrella closing length as claimed in claim 3, wherein: the opening and closing control device comprises: a button (331), a control tube (332) for inserting the bullet, an umbrella closing locking device (333) for locking the outer tube or the lower nest when the umbrella is closed, a bullet head fastener (334) for locking the bullet head in the control tube (332), and a sliding press buckle (335) capable of sliding up and down along the axial direction of a rod in the umbrella; the sliding press buckle is characterized in that a sliding groove (3351) is formed in the sliding press buckle (335), a vertical sliding rail (3311) is arranged on the button (331) in a protruding mode, the sliding rail (3311) is embedded into the sliding groove (3351) of the sliding press buckle (335), and the sliding press buckle (335) can slide up and down along the sliding rail (3311).

5. The automatically opening and closing multi-fold umbrella with short umbrella-closing length as claimed in claim 4, wherein: the button (331) includes a button main body (3312) and a pressing part (3313) mounted on a front surface of the button main body (3312); the button is characterized in that a window hole (3314) is formed in the front wall body of the button main body (3312), two sliding rails (3311) are arranged on the left side wall and the right side wall of the window hole (3314) in a protruding mode, the distance from the bottom surfaces of the two sliding rails (3311) to the bottoms of the left side wall and the right side wall of the window hole (3314) is larger than the thickness of the front portion of the sliding press buckle (335), and two sliding grooves (3351) are arranged on the left side and the right side of the front portion of the sliding press buckle (335).

6. The automatic opening and closing multi-fold umbrella with short umbrella closing length as claimed in claim 5, wherein: the window hole (3314) bottom is equipped with location convex column (3315), the slip is pressed and is detained (335) anterior bottom surface and this location convex column (3315) perpendicular department of corresponding and be equipped with shrinkage pool (3352), and a spring mounting is in between location convex column (3315) and shrinkage pool (3352) and to this slip pressure detain (335) production ascending thrust.

7. The automatic opening and closing multi-fold umbrella with short umbrella-closing length according to any one of claims 3 to 6, characterized in that the safety device is installed in the lower chamber of the inner seat (32), comprising: a reel (341) for winding the safety wire (5), a ratchet (342) and a spring (343) fixed to the rotation shaft of the reel (341), and a locking member (344) for locking the ratchet (342) to prevent reverse rotation when the middle rod is compressed; the diameter of one side of a winding shaft (3411) of the reel (341) corresponding to the position where the safety pull wire (5) comes from is larger, and the diameter of the other side is smaller.

8. The automatically opening and closing multi-fold umbrella with a short umbrella-closing length as claimed in claim 7, wherein: the top of the lower cavity of the inner seat (32) is provided with a partition plate (321), the bottom of the lower cavity is provided with a bottom plate (323), the partition plate (321) is provided with a through hole for the safety pull wire (5) to pass through, the partition plate (321) is provided with a top notch (322) at a position corresponding to the spiral spring (343), and the bottom plate (323) is provided with a bottom notch (324) at a position corresponding to the spiral spring (343).

9. The automatic opening and closing multi-fold umbrella with short closing umbrella length according to any one of claims 1 to 6, characterized in that the outer tube (11) of the central rod (1) sleeved at the outermost layer comprises: the outer tube main body (111) and the plastic sleeve (112) with the upper section sleeved outside the bottom of the outer tube main body (111), and the side wall of the lower section of the plastic sleeve (112) is provided with a connector (113) for clamping.

10. The automatically opening and closing multi-fold umbrella with a short umbrella-closing length as claimed in claim 9, wherein: the transverse size of the inner hole of the lower section of the plastic sleeve (112) is slightly smaller than that of the inner hole of the outer tube main body (111), and a boss (114) protruding outwards is arranged at the bottom of the connecting port (113) of the plastic sleeve (112).

Technical Field

The invention relates to an umbrella used in daily life, in particular to an improved structure of an automatic opening and closing multi-folding umbrella.

Background

The automatic opening and closing multi-folding umbrella on the market can realize the opening action of extending the middle rod and opening the umbrella ribs or the closing action of folding the umbrella ribs by pressing the button on the umbrella handle, and is very convenient and popular for use. The ribs of an automatic opening and closing multi-folding umbrella are usually made into 3-5 folds, the ribs are movably connected together by adopting parts such as rivets, and the structure of a group of radial rib units of a common three-folding umbrella is shown in figure 1 and comprises the following components: first rib 91, second rib 92 and the third rib 93 that from inside to outside connect gradually, the outer end articulates in inferior bone 94 at first rib 91 middle part, connects the connecting rod 95 of inferior bone 94 and second rib 92, connects the pull rod 96 of first rib 91 and third rib 93. The inner ends of the first rib 91 and the secondary rib 94 are respectively connected with the upper nest and the lower nest of the umbrella, the outer end of the first rib 91 and the outer end of the connecting rod 95 are respectively connected with the inner end of the second rib 92, the pull rod 96 is positioned above the second rib 92, and the connecting point of the second rib 92 and the third rib 93 is positioned outside the connecting point of the pull rod 96 and the third rib 93. When the existing multi-folding umbrella rib is unfolded, the unfolding size is shown as a dotted line in fig. 1, a part of the length of the inner end of the third umbrella rib 92 cannot be fully utilized as the radial supporting length of the umbrella frame unit when the umbrella is unfolded, in order to ensure the enough unfolding size, the size of each section of the umbrella rib is longer, and the length of the folded umbrella is still longer.

In addition, in order to prevent the accident that the middle rod rebounds to hurt people due to the fact that the hand is inadvertently loosened during the process of compressing the middle rod, a safety device is also generally installed in the umbrella handle of the automatic opening and closing umbrella, and the safety device generally comprises: the winding wheel, ratchet wheel and spring fixed on the rotating shaft of the winding wheel, and the clamping piece for clamping the ratchet wheel to prevent reverse rotation when the middle rod is compressed. In addition, the inner cavity of the middle rod is provided with a safety pull wire, the top of the safety pull wire is connected with the top of the middle rod or the safety pull wire of the upper nest, and the bottom of the safety pull wire is connected with the reel. When the umbrella is folded and the middle rod is compressed, the winding wheel can rotate in the forward direction to wind the safety pull wire under the action of the clockwork spring, and at the moment, if the ratchet wheel rotates reversely, the ratchet wheel can be clamped by the clamping piece to prevent the winding wheel from rotating reversely and then the safety pull wire is discharged, so that the middle rod can be prevented from rebounding even if hands are loosened in the process of compressing the middle rod.

Among the above-mentioned components of the safety device, the diameter of the spool of the existing reel is the same along its length direction, and during the winding process, the safety cord is concentrated around the position opposite to the spool and near, so that the spool needs enough space to ensure its normal operation, and in addition, the size of the spring is also larger, and also needs larger space to accommodate, so the existing safety device needs to occupy larger space inside the umbrella handle, thereby also increasing the length of the umbrella handle, further increasing the length of the umbrella after being folded, making the umbrella inconvenient to be carried around in a bag, and if the shorter folding length is realized, usually only more folding ribs can be used, but also increasing the labor required by the rib components and assembly, resulting in increased cost.

Disclosure of Invention

The invention aims to provide an automatic opening and closing multi-folding umbrella, wherein under the condition of the same opening size, the folding length of umbrella ribs is shorter. In addition, the invention further provides an automatic opening and closing multi-folding umbrella with a safety device, wherein the length of the umbrella handle is shorter.

The technical scheme adopted by the invention for solving the technical problems is that an automatic opening and closing multi-folding umbrella with short umbrella closing length is designed and manufactured, and comprises the following components: the umbrella comprises a middle rod formed by sleeving a plurality of pipe fittings in a sliding manner, an upper nest fixed at the top of the middle rod, a lower nest sleeved in the middle rod in a sliding manner, an umbrella handle arranged at the bottom of the middle rod, and umbrella ribs connected with the upper nest and the lower nest; the umbrella rib includes: the umbrella comprises a first umbrella rib, a second umbrella rib and a third umbrella rib which are sequentially connected from inside to outside, a secondary rib hinged to the middle part of the first umbrella rib, a connecting rod with two ends respectively connected with the secondary rib and the second umbrella rib, and a pull rod with two ends respectively connected with the first umbrella rib and the third umbrella rib;

the outer end of the first umbrella rib extends outwards along a connection point of the first umbrella rib and the second umbrella rib, the pull rod is located below the second umbrella rib, the inner end of the pull rod and the connection point of the first umbrella rib are located on the outer side of the connection point of the first umbrella rib and the second umbrella rib, and the outer end of the pull rod and the connection point of the third umbrella rib are located on the outer side of the connection point of the second umbrella rib and the third umbrella rib.

The first rib and the secondary rib are aluminum alloy groove ribs, the second rib is made of glass fiber or engineering plastic materials, and a plurality of hollow holes are formed in the second rib along the length direction.

The umbrella handle includes: the umbrella comprises a shell, an inner seat arranged in the inner cavity of the shell, an opening and closing control device used for controlling the opening and closing of the umbrella and a safety device used for preventing the middle rod from rebounding when the middle rod is compressed.

The opening and closing control device comprises: the umbrella closing device comprises a button, a control pipe for inserting the bullet, an umbrella closing locking device for locking the outer pipe or the lower nest when the umbrella is closed, a bullet buckling piece for buckling the bullet in the control pipe, and a sliding press buckle capable of sliding up and down along the axial direction of a middle rod of the umbrella; the sliding press buckle is provided with a sliding groove, the button is convexly provided with a vertical sliding rail, and the sliding rail is embedded into the sliding groove of the sliding press buckle, so that the sliding press buckle can slide up and down along the sliding rail.

The button comprises a button body and a pressing part arranged on the front surface of the button body; the button is characterized in that a window hole is formed in the front wall body of the button main body, the two sliding rails are arranged and are respectively and convexly arranged on the left side wall and the right side wall of the window hole, the distance from the bottom surfaces of the two sliding rails to the bottoms of the left side wall and the right side wall of the window hole is larger than the thickness of the front portion of the sliding press buckle, and the two sliding grooves are arranged and are respectively located on the left side and the right side of the.

The bottom of the window hole is provided with a positioning convex column, a concave hole is arranged at the position of the bottom surface of the front part of the sliding pressing buckle, which is vertically corresponding to the positioning convex column, and a spring is arranged between the positioning convex column and the concave hole and generates upward thrust to the sliding pressing buckle.

The safety device is installed in the lower part cavity of interior seat, includes: the winding wheel is used for winding the safety pull wire, the ratchet wheel and the clockwork are fixed on the rotating shaft of the winding wheel, and the clamping piece is used for clamping the ratchet wheel to prevent the ratchet wheel from reversely rotating when the middle rod is compressed; the diameter of one side of the winding shaft of the winding wheel corresponding to the position of the safe wire pulling source is larger, and the diameter of the other side of the winding shaft is smaller.

The top of the cavity at the lower part of the inner seat is provided with a partition plate, the bottom of the cavity is provided with a bottom plate, the partition plate is provided with a through hole for the safe stay wire to pass through, the partition plate is provided with a top notch at the position corresponding to the clockwork spring, and the bottom plate is provided with a bottom notch at the position corresponding to the clockwork spring.

The outer tube that cup joints in outmost among the well stick includes: the outer tube main part and the upper section are sleeved on the plastic sleeve outside the bottom of the outer tube main part, and a connector for the buckle is arranged on the side wall of the lower section of the plastic sleeve.

The transverse size of the inner hole of the lower section of the plastic sleeve is slightly smaller than that of the inner hole of the outer pipe main body, and the plastic sleeve is provided with a boss protruding outwards at the bottom of the connecting port.

Compared with the prior art, the automatic folding and unfolding multi-folding umbrella improves the connecting structure and the hinge point of the first umbrella rib, the second umbrella rib, the third umbrella rib and the pull rod, the outer end of the first umbrella rib is prolonged, the pull rod is arranged below the second umbrella rib, and the second umbrella rib is hinged to the innermost end of the third umbrella rib, so that the length of the umbrella ribs can be fully utilized, the unfolding size of the unfolded umbrella ribs is larger, and the folded length of the multi-folding umbrella is shorter than that of the traditional folding umbrella under the condition of the same unfolding size. Further, the spool of the reel of the safety structure in the umbrella stick adopts the structure that one end is big and one end is small, and the line piles up in a department and need occupy higher space when can preventing the wire winding, and the baffle and the bottom plate of interior seat lower part cavity all set up jaggedly in clockwork spring position department simultaneously, also can reduce the great clockwork spring of size and to the occupation in space, can reduce the length of umbrella stick. The length of the folded umbrella is shorter, and the umbrella can be conveniently put into a bag to be carried about.

In addition, the invention also changes the sliding press buckle in the opening and closing control device into a sliding rail type structure, so that the sliding device is smoother when sliding up and down, does not deviate, and is more reliable in work.

In addition, the plastic sleeve is sleeved outside the bottom of the outer pipe of the middle rod, the connecting port is formed in the plastic sleeve for buckling the umbrella, the strength requirement of the buckling position can be met, the scratch on the outer wall of the inner pipe fitting can be effectively reduced, compared with the existing method that a metal sleeve is sleeved outside a softer aluminum outer pipe and a copper sleeve is arranged inside the aluminum outer pipe, the method has the advantages that the bottom sleeve of the outer pipe is made of engineering plastic materials, the processing is easier, the production efficiency is high, the manufacturing process is greatly simplified, and the material cost and the labor cost are greatly reduced.

Drawings

FIG. 1 is a schematic structural view of a set of radial rib units of a prior three-fold umbrella;

FIG. 2 is a schematic structural view of an automatic opening and closing multi-fold umbrella with a short umbrella closing length in the umbrella closing state;

FIG. 3 is a schematic structural view of an automatic opening and closing multi-fold umbrella with a short umbrella closing length in a half-open state;

FIG. 4 is a schematic structural view of an automatically opening and closing multi-fold umbrella with a short umbrella-closing length in the open state;

fig. 5 is a schematic view showing the structure of the junction of first rib 41 and second rib 42 in one embodiment;

fig. 6 is a schematic structural view of the second rib 42;

FIG. 7 is an exploded view of the handle of the automatic opening and closing umbrella of the present invention;

fig. 8 is a schematic view of an assembled structure of the opening and closing control device (the control pipe 332 is not shown);

fig. 9 is an exploded view of the opening and closing control device (control tube 332 is not shown);

fig. 10 is an exploded view of the button 331;

FIG. 11 is a schematic view of the inside structure of the handle 3 in the state of closing the umbrella;

FIG. 12 is a schematic view of the internal structure of the handle 3 after the button 331 is pressed for the first time to release the middle rod 1;

FIG. 13 is a schematic view showing the inside of the handle 3 after the button 331 is pressed a second time to release the bullet 7;

FIG. 14 is a schematic view of the safety device mounted on the inner seat 32;

fig. 15 is a schematic structural view of the reel 341 without the safety wire 5 being wound;

fig. 16 is a schematic structural view of the reel 341 when a safety wire 5 is wound;

fig. 17 is a schematic structural view of the inner seat 32;

fig. 18 is a perspective view of the lower portion of the outer tube 11;

fig. 19 is an external structural view of the outer tube 11;

fig. 20 is a longitudinal sectional view of the outer tube 11.

Detailed Description

The following detailed description is to be read with reference to the best mode embodiment as shown in the drawings.

The present embodiment is described by taking as an example an automatically opening and closing multi-fold umbrella in which the most common ribs are three-folded and which has a safety device for preventing the rebound during the compression of the central rod. The working principle of the opening and closing control device for controlling the opening and closing of the umbrella and the safety device for preventing the rebound in the middle rod compression process are the prior art, and the automatic opening and closing control device of the multi-folding umbrella with the safety structure as disclosed in the Chinese invention patent with the publication number of CN103070530B is described, so that only the improvement part of the opening and closing control device and the safety device related to the invention is described below.

For convenience of description, the direction close to the umbrella nest body or the umbrella middle rod is defined as the inner side, and the direction far away from the umbrella nest body or the umbrella middle rod is defined as the outer side.

As shown in fig. 2, 3 and 4, the automatic opening and closing multi-fold umbrella with a short umbrella closing length of the present invention comprises: the umbrella comprises a middle rod 1, an upper nest 21 fixed at the top of the middle rod 1, a lower nest 22 sleeved on the middle rod 1 in a sliding manner, an umbrella handle 3 arranged at the bottom of the middle rod 1, and umbrella ribs 4 connected with the upper nest 21 and the lower nest 22.

The middle rod 1 is formed by sequentially slidably sleeving a plurality of pipe fittings from outside to inside, and in the embodiment, the middle rod 1 comprises an outer pipe 11, a middle pipe 12 and an inner pipe 13. The outer pipe 11 is sleeved on the outermost layer, and the top of the outer pipe is connected with the upper nest 21; the inner pipe 13 is sleeved on the innermost layer, and the bottom of the inner pipe is connected with the umbrella handle 3.

As shown in fig. 7, the handle 3 includes: the umbrella comprises a shell 31, an inner seat 32 arranged in the inner cavity of the shell 31, an opening and closing control device for controlling the opening and closing of the umbrella and a safety device for preventing the middle rod from rebounding in the folding process.

One of the improvements of the present invention is directed to a connection structure of an umbrella rib 4, as shown in fig. 3, the umbrella rib 4 comprising: a first rib 41, a second rib 42, a third rib 43, a secondary rib 44, a connecting rod 45 and a pull rod 46 which are connected in sequence from inside to outside. The outer side of the secondary rib 44 is hinged to the middle of the first rib 41, the inner side of the secondary rib 44 and the inner side of the first rib 41 are respectively connected with the upper nest 21 and the lower nest 22 of the umbrella, and the included angle between the first rib 41 and the secondary rib 44 can be changed by the up-and-down movement of the lower nest 22 along the umbrella middle rod, so that the whole umbrella framework is driven to be unfolded or folded to open and close the umbrella. Both ends of the connecting rod 45 are respectively connected with the secondary rib 44 and the second rib 42, and both ends of the pull rod 46 are respectively connected with the first rib 41 and the third rib 43.

As shown in fig. 3, the umbrella frame 4 of the present invention is characterized in that: the outer end of the first rib 41 extends outwards along the connection point a with the second rib 42, the pull rod 46 is located below the second rib 42, the connection point B between the inner end of the pull rod 46 and the first rib 41 is located outside the connection point a between the first rib 41 and the second rib 42, and the connection point D between the outer end of the pull rod 46 and the third rib 43 is located outside the connection point C between the second rib 42 and the third rib 43.

Preferably, the connection point B is located near the outermost end of the first rib 41 and the innermost end of the tie bar 46, and the connection point C is located near the outermost end of the second rib 42 and the innermost end of the third rib 43.

After the umbrella ribs adopt the connecting structure, the extending length of the multi-fold umbrella ribs after opening is shown as a dotted line in fig. 4, the size of the end part joint at the inner end of the third umbrella rib is fully utilized, and under the condition of the same folding length L1 of the umbrella as shown in fig. 2, the effective opening size L2 shown in fig. 4 is increased by about 2 cm compared with the traditional three-fold umbrella. That is to say, under the condition of the same effective umbrella opening size, the length of the folded umbrella ribs is shorter than that of the traditional folding umbrella, and the umbrella is more convenient to carry.

In order to reduce the weight of the multi-fold umbrella rib, the first umbrella rib 41 and the second umbrella rib 44 are preferably made of aluminum alloy channel rib, and as shown in fig. 6, the second umbrella rib 42 may be made of glass fiber or engineering plastic material, and a plurality of hollow holes 421 are formed along the length direction. Of course, if the weight is not considered, the first rib 41 and the second rib 44 may be other metal channel ribs or round ribs.

Since the outermost end of the first rib 41 crosses the connection point a of the first rib 41 and the second rib 42, the structure of the connection point of the first rib 41 and the second rib 42 is slightly different from that of the conventional multi-fold umbrella, in one embodiment, as shown in fig. 5, the inner side of the second rib 42 is provided with a long hole 422 extending along the length direction thereof, the outer end of the first rib 41 passes through the long hole 422, the connection point a is located approximately in the middle of the long hole 422 so that the two ribs can smoothly rotate relative to each other, and in addition, the long hole 422 is designed to reduce the weight of the second rib 42. In another embodiment, the inner side of second rib 42 can also be hinged to the side of first rib 41 (not shown in the figures). Of course, the connection structure of the first rib 41 and the second rib 42 is not limited to the above embodiment.

Another improvement of the present invention is directed to the structure of the opening and closing control and safety device in the handle 3.

As shown in fig. 7, the opening and closing control device includes: a button 331, a control tube 332 for inserting the bullet 7, a umbrella closing locking device 333 for locking the outer tube or the lower nest when the umbrella is closed, a bullet locking piece 334 for locking the bullet in the control tube 332, and a sliding press button 335 capable of sliding up and down along the axial direction of the stick in the umbrella.

The improvement of the opening and closing control device of the present invention is that the sliding press buckle 335 adopts a sliding rail type structure to realize the up-and-down sliding. As shown in fig. 8 and 9, a sliding groove 3351 is provided on the sliding buckle 335, a vertical sliding rail 3311 is convexly provided on the button 331, and the sliding rail 3311 is embedded in the sliding groove 3351 of the sliding buckle 335, so that the sliding buckle 335 can slide up and down along the sliding rail 3311. The sliding rail type sliding structure enables the up-and-down sliding action of the sliding press buckle 335 to be smooth, and can avoid the problems that the traditional structure that the inserting column is arranged in the middle of the sliding press buckle and inserted into the spring is prone to side deviation and unsmooth sliding in the sliding process.

In this embodiment, as shown in fig. 10, the button 331 includes a button body 3312 and a pressing portion 3313 mounted on a front surface of the button body 3312, a through hole 311 is formed on a front portion of the housing 31 for the pressing portion 3313 to be exposed, and the pressing portion 3313 can be pressed to drive the button body 3312 at a rear portion thereof to move backward. The button body 3312 has a substantially square window 3314 formed in the middle of the front wall thereof, and the slide rails 3311 have two rails which are respectively protruded from the left and right sidewalls of the window 3314. The two slide rails 3311 do not extend to the bottom, and the distance from the bottom of the slide rail 3311 to the bottom of the left and right side walls of the window opening 3314 is greater than the thickness of the front portion of the slide fastener 335. As shown in fig. 9, two sliding grooves 3351 are respectively provided and are respectively located at the left and right sides of the front portion of the sliding buckle 335.

As shown in fig. 9 and 10, a positioning boss 3315 is disposed at the bottom of the window hole 3314, a concave hole 3352 is disposed at a position corresponding to the positioning boss 3315 and perpendicular to the bottom surface of the front portion of the sliding buckle 335, and a spring 336 is disposed between the positioning boss 3315 and the concave hole 3352 and generates an upward pushing force on the sliding buckle 335. In order to save the space for installing the spring 336, as shown in fig. 10, a concave portion is formed at the bottom of the window hole 3314, and the positioning boss 3315 is formed at the middle of the concave portion.

During assembly, the front part of the sliding buckle 335 is inserted into the window 3314 from the space below the sliding rail 3311 at the bottom of the window 3314, so that the sliding rail 3311 corresponds to the sliding groove 3351 up and down, then the sliding buckle 335 is moved up to fit the sliding rail 3311 and the sliding groove 3351 in an embedded manner, and finally, as shown in fig. 8, the spring 336 is installed between the positioning boss 3315 and the concave hole 3352, so as to complete the assembly of the sliding buckle 335.

The working principle of the automatic opening and closing umbrella is the prior art, and the structure of the handle part related to the invention is described below.

As shown in fig. 9, the top of the button body 3312 is substantially annularly fitted around the umbrella stick 1, as shown in fig. 14, horizontal grooves 326 are formed on the left and right side walls of the upper cavity of the inner holder 32, and both sides of the annular portion of the top of the button body 3312 are fitted in the horizontal grooves 326 so that the button body 3312 can horizontally slide back and forth. The umbrella locking means 333 may be a protrusion provided on the inner wall of the rear of the top of the button body 3312, the top of the protrusion 333 being provided with a guide slope, and a compression spring 3331 provided at the rear of the protrusion 333 to be pushed forward by the button body 3312. The bullet head fastener 334 is substantially E-shaped, and has two top rods 3341 extending horizontally forward and an inserting rod 3342 located between the two top rods 3341, the control tube 332 is located between the two top rods 3341, the inserting rod 3342 can pass through a through hole formed in the side wall of the control tube 332 and be inserted into the inner cavity of the control tube 332, and a compression spring 3343 is installed at the rear of the bullet head fastener 334 to push the bullet head fastener 334 forward. The sliding buckle 335 is provided with a horizontal U-shaped member 3353 extending backwards at the upper part and a pressing block 3354 extending backwards at the lower part, and the umbrella middle rod is inserted into the horizontal U-shaped member 3353.

In the umbrella folding state, as shown in fig. 11, the umbrella stick 1 is folded, wherein the outer tube at the outermost layer is inserted into the inner cavity of the umbrella handle, the outer tube pushes the protrusion 333 back and continues to move down by pressing down the guiding slope at the top of the protrusion 333 until the protrusion 333 is clamped forward into the buckling through hole formed in the side wall of the umbrella stick under the action of the compression spring 3331, and at this time, the umbrella stick 1 is locked in the umbrella folding state. At the same time, the outer tube of the stick 1 of the umbrella presses down the horizontal U-shaped member 3353 to move the slide fastener 335 downward, and the pressing piece 3354 moves downward accordingly to be offset from the two push rods 3341 of the bullet-nose fastener 334. At this time, the bullet 7 is positioned in the control tube 332 (the control tube is not shown in fig. 11), and the insertion rod 3342 at the center of the bullet catch 334 is inserted forward into the control tube 332 by the compression spring 3343 to lock the bullet 7 in the control tube 332.

When the button 331 is pressed for the first time in the umbrella folding state, as shown in fig. 12, the button 331 drives the protrusion 333 to move backwards and exit from the snap through hole of the side wall of the umbrella middle rod, the umbrella middle rod 1 is released and extends under the action of the umbrella opening spring 8 arranged in the inner cavity of the umbrella middle rod, the outer tube of the umbrella middle rod rises upwards, the sliding press buckle 335 loses the pressing of the middle rod outer tube and moves upwards under the action of the spring 336 until the press block 3354 at the lower part of the umbrella middle rod outer tube horizontally faces to the position of the push rod 3341, and the umbrella lower nest is pulled upwards by the guy cable 6 to open the umbrella ribs to realize the umbrella opening action.

When the button 331 is pressed for the second time, as shown in fig. 13, the button 331 drives the sliding button 335 to move backward, the pressing block 3354 of the sliding button 335 pushes the prop 3341 to move backward, the rod 3342 at the middle of the bullet catch 334 retreats from the control tube 332 (not shown in fig. 13) to release the locking of the bullet 7, the bullet 7 is separated from the control tube 332 and moves upward under the pulling force of the pulling cable 6, as shown in fig. 3, the ribs 4 will be folded under the action of the umbrella folding spring 47 after the umbrella runner 22 loses the pulling force of the pulling cable 6. At this time, the middle rod is compressed again until the outer tube is pressed into the inner cavity of the umbrella handle, and the bullet head 7 is pressed into the control tube 332 again to form the umbrella-closing state shown in fig. 2 and 11.

As shown in fig. 13 and 14, the safety device includes: a reel 341 for winding the safety wire 5, a ratchet 342 and a spring 343 fixed to a rotation shaft of the reel 341, and a locking member 344 for locking the ratchet 342 to prevent reverse rotation when the middle rod is compressed. The ratchet 342 is mounted on one side of the reel 341 and the spring 343 is mounted on the other side of the reel 341. The top of the locking member 344 is rotatably connected to the inner seat 32, and a horizontal cantilever 3441 is provided on the upper portion of the locking member, the horizontal cantilever 3441 extends to the lower portion of the control tube 332, and a spring 345 urges the lower swing of the locking member 344 to approach the ratchet gear 342.

In the umbrella-closing state as shown in fig. 11, the bullet head 7 is locked in the control tube 332, and the bottom of the bullet head 7 pushes the horizontal cantilever 3441 of the locking member 344 downwards so that the downward swing of the locking member 344 moves outwards away from the ratchet 342, and the safety wire 5 is wound on the reel 341.

In the state that the button 331 is pressed for the first time as shown in fig. 12, the bullet head 7 is still locked in the control tube 332, the blocking member 344 swings down away from the ratchet 342, the ratchet 342 can rotate freely, the middle rod 1 is stretched upward, the reel 341 can rotate reversely to pull out the safety wire 5 wound thereon since one end of the safety wire 5 is fixed to the top of the middle rod or the upper nest, and the spring 343 is wound up due to reverse rotation to accumulate the elastic force of the recoil.

In the state that the button 331 is pressed for the second time as shown in fig. 13, the bullet head 7 is released from the control tube 332, the horizontal cantilever 3441 loses the downward pushing force of the bullet head 7, the locking member 344 swings downward and abuts against the ratchet 342 under the action of the spring 345, the ratchet 342 can only rotate in the forward direction but cannot rotate in the reverse direction, and when the middle rod is compressed, the reel 341 rotates in the forward direction to wind the safety wire 5 under the action of the spring force of the forward rewinding spring 343. Even if the middle rod is stopped being compressed halfway, the reel 341 cannot rotate reversely to pay out the safety wire 5 because of the catching action of the catching piece 344 to the ratchet gear 342, so that the occurrence of the situation in which the middle rod 1 is suddenly rebounded during the compression process can be prevented.

The working principle of the safety device is also the prior art, and the structural improvement of the safety device is explained below.

As shown in fig. 14 and 17, the safety device is installed in the lower chamber of the inner seat 32, a partition 321 is provided at the top of the lower chamber of the inner seat 32, a bottom plate 323 is provided at the bottom of the lower chamber, a through hole 325 for the safety wire 5 to pass through is opened at the partition 321, a top notch 322 is opened at a position corresponding to the spiral spring 343 at the partition 321, and a bottom notch 324 is opened at a position corresponding to the spiral spring 343 at the bottom plate 323. Thus, the spring 343 can enter the crown notch 322 and the sole notch 324, and the height of the lower chamber of the inner holder 32 can be made small even if the radial dimension of the spring is large.

Further, as shown in fig. 15 and 16, the spool 3411 of the reel 341 has a larger diameter on one side and a smaller diameter on the other side corresponding to the position where the safety wire 5 is coming from (i.e., the through hole 325 of the partition 321), so that when the safety wire 5 is wound by compressing the plunger, the safety wire 5 is wound around the spool 3411 first on the side where the diameter is smaller, and thus the safety wire 5 is wound around the spool 3411 more dispersedly without causing the wire to be wound around a certain portion intensively and occupying a large space.

After the safety device adopts the improved structure, the height of the lower cavity of the inner seat 32 can be made smaller, so that the length of the umbrella handle can be reduced.

As shown in fig. 15, in cooperation with the structural improvement of the bobbin 3411, the bobbin 3411 is provided with a knot storage hole 3412 at one side having a larger diameter and a guide groove 3413 extending from an end of the bobbin 3411 along a circumferential direction of the knot storage hole 3412, and the safety wire 5 is led out from the knot storage hole 3412, wound around the bobbin 3411 along the guide groove 3413 and then wound around the bobbin 3411 at the side having a smaller diameter, so that the knot of the safety wire 5 can be prevented from being pulled out from the knot storage hole 3412.

In addition, the invention further improves the outer pipe structure of the middle rod 1.

As shown in fig. 18 to 20, the outer tube of the stick of the folding umbrella of the present invention includes an outer tube main body 111 and a plastic sleeve 112, wherein the outer tube main body 111 is usually made of metal, and a light aluminum material can be used to reduce the weight of the umbrella, the plastic sleeve 112 is sleeved outside the bottom of the outer tube main body 111, and only the upper section of the plastic sleeve 112 contacts with the outer tube main body 111. The side wall of the lower part of the plastic sleeve 112 is provided with a connecting port 113 for locking the middle rod by buckling with an umbrella closing locking device 333 in the umbrella handle in the umbrella closing state.

For the automatic umbrella with the umbrella opening spring 8 arranged in the inner cavity of the middle rod 1, when the umbrella is in an umbrella closing state, the outer pipe main body 111 has a tendency of popping upwards under the action of the umbrella opening spring 8, and the bottom of the connecting port 113 is impacted and extruded to cause faster abrasion of the bottom of the connecting port 113, so that the plastic sleeve 112 is provided with the boss 114 protruding outwards at the bottom of the connecting port 113, and the boss 114 can slow down the abrasion speed of the bottom of the connecting port 113 and prolong the service life; on the other hand, the contact area (buckling area) between the plastic sleeve 112 and the umbrella-closing locking device, namely the protrusion 333, in the umbrella handle can be increased, and the connection strength of the buckling part between the plastic sleeve 112 and the umbrella-closing locking device 333 can also be increased.

As shown in fig. 20, the upper section of the inner hole of the plastic sleeve 112 has a larger transverse dimension than the lower section, a horizontal step surface 115 is formed at the joint of the upper and lower sections, the bottom end surface of the outer tube body 111 is supported on the step surface 115, and the transverse dimension of the inner hole of the lower section of the plastic sleeve 112 is slightly smaller than the transverse dimension of the inner hole of the outer tube body 111, so that the inner tube only makes frictional contact with the plastic sleeve 112 in the outer tube structure during the extension or folding process of the middle rod, and the surface of the inner tube is not easily scratched because the plastic material is softer than the outer tube body made of metal.

In this embodiment, a pair of through holes is disposed on the sidewall of the bottom of the outer tube body 111, and the inner wall of the plastic sleeve 112 is disposed with a convex pillar 116 at a corresponding position, so that the outer tube body 111 and the plastic sleeve 112 can be fixed together by embedding the convex pillar 116 into the through hole of the sidewall of the outer tube body 111. The plastic sleeve 112 can be formed at the bottom of the outer tube body 111 through an injection molding process, and the convex column 116 is formed by infiltrating a molten plastic material into a through hole in the side wall of the outer tube body 111.

Here, the transverse dimension between the two convex columns 116 is smaller than the transverse dimension of the inner hole of the outer tube main body 111, so that the contact between the inner wall of the outer tube main body 111 and the inner-layer tube can be further avoided, the outer end face of each convex column 116 is designed to be a convex arc face, and the friction damage to the outer wall of the inner-layer tube can be further reduced.

In a preferred embodiment, engineering plastics with high strength is used as the material for manufacturing the plastic sleeve, which is easier to process, has high production efficiency and simple procedure compared with metal materials. In addition, the engineering plastic has high strength and outstanding antifriction and wear resistance, so that on one hand, the strength of the connecting hole is high enough and the outer pipe is not easy to damage when being buckled with the umbrella handle; on the other hand, when the umbrella middle rod is extended or folded, the relative movement between the plastic sleeve and the inner pipe fitting can not scratch the outer wall of the inner pipe fitting.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.