TWM560910U - Walk-aid and folding device thereof - Google Patents

Abstract

A folding device for a walker includes a fixing piece, a body, a holder, and an elastic member. The fixing piece includes a sliding groove penetrating up and down. The chute has an arcuate groove portion and a circular groove portion that communicate with each other. The diameter of the circular groove portion is larger than the diameter of the curved groove portion. The seat is located above the fixing piece and includes a through slot that opens toward the sliding slot. The holder is movably disposed in the through slot and includes a latch and a pressing handle. The latch is movable within the arcuate groove and has a fixed head that can be secured to the circular groove. The plunger is secured to the latch and has an operating section that can be pushed and extended out of the housing. The elastic member is disposed between the seat and the latch of the holder, and the constant drive displaces the fixing head of the latch toward the fixing piece.

Description

Walker and folding device thereof

The present invention relates to a folding device, and more particularly to a folding device for a walking aid and a walking device provided with the folding device.

Referring to FIG. 1 and FIG. 2, a conventional walker 1 includes an H-shaped front frame 11 and two inverted U-shaped side frames 12, and two folding devices 13 as described in Chinese Patent No. CN2796692Y. . The front frame 11 includes two sleeves 111 on opposite sides. One side of each side frame 12 is rotatably disposed on each of the sleeves 111, respectively. Each of the side frames 12 has a grip portion 121 for holding by a person, and a support rod 122 extending downward from the grip portion 121 and inserted into the respective sleeves 111. The folding devices 13 are respectively disposed on the sleeves 111 of the front frame 11 and are respectively connected to the side frames 12.

Each folding device 13 includes a fixing piece 14, a body 15, a pin 16, a spring 17, and a wrench 18. The fixing piece 14 is disposed outside each of the sleeves 111 and has a sliding groove 141. The sliding groove 141 has an arcuate groove portion 142 and a circular groove portion 143. The diameter of the circular groove portion 143 is larger than the diameter of the curved groove portion 142. The base body 15 is mounted on each of the support rods 122 by a fixing rod 101, and has a sleeve hole 151 for inserting the respective support rods 122, and a through hole 152. The latch 16 is mounted on the mounting hole 152 and sleeved by the spring 17 and has a head 161 having an outer diameter larger than the arcuate groove portion 142, and a shaft 162 having an outer diameter smaller than the arcuate groove portion 142. . The wrench 18 is pivotally disposed on each of the support rods 122 through a pivot shaft 102, and has a pressing portion 181 that is pressed against the latching pin 16, a connecting portion 182 that connects the abutting portion, and The clamping section 183 extends outwardly from the segment 182. The sleeve portion 182 has a sleeve hole 184 for the respective support rods 122, and two pivot holes 185 for the opposite sides and for the pivot shaft 102 to be inserted. The triggering section 183 of the wrench 18 extends below the gripping section 121 of the side frame 12 for the user to pull. When the pulling section 183 of the wrench 18 is pulled upward, the wrench 18 will swing around the pivot 102, and the abutting section 181 will move downward and push the latch 16 to make the latch 16 The head portion 161 is away from the circular groove portion 143 of the sliding groove 141. At this time, the shaft 162 of the bolt 16 can move in the arcuate groove portion 142 of the sliding groove 141, and the side frame 12 can be opposite to the front. The frame 11 is rotated to be folded.

When the folding device 13 is installed, the hole for the pivot 102 is first drilled on the support rod 122 of the corresponding side frame 12, and then the wrench 18 is sleeved to the support rod 122, and then The seat 15 is then mounted and the wrench 18 is then secured to the support bar 122 by the pivot 102. The assembly steps are cumbersome and require improvement. Moreover, the pulling section 183 of the wrench 18 is located below the holding section 121 of the side frame 12, and although it is convenient for the user to pull, it occupies the space occupied by the user, when using the assisting When the device 1 is used, the wrench 18 often hits the user's hand, so there is also a need for improvement.

Therefore, the object of the present invention is to provide a folding device for a walker which is relatively compact and easy to assemble.

Thus, the folding device of the novel walker is adapted to be mounted on the walker, the walker comprising an H-shaped front frame, and an inverted U-shaped and rotatably disposed side frame of the front frame The folding device comprises a fixing piece, a body, a holder, and an elastic member.

The fixing piece is adapted to be disposed on the front frame of the walker and adjacent to the side frame. The fixing piece includes a top surface, a bottom surface, and a sliding slot extending from the top surface to the bottom surface. The chute has an arcuate groove portion and a circular groove portion that communicate with each other. The diameter of the circular groove portion is larger than the diameter of the curved groove portion.

The seat body is adapted to be placed on the side frame of the walker. The seat is located above the fixing piece and includes a through slot that opens toward the sliding slot.

The holder is movably disposed in the through slot of the seat body, and includes a latch and a pressing handle. The latch is movable along its own axis and has a shaft and a fixed head. The rod is inserted through the sliding groove of the fixing piece, and the outer diameter is smaller than the diameter of the arcuate groove portion of the sliding groove. The fixing head is disposed at the bottom of the shaft, and has an outer diameter larger than a diameter of the arcuate groove portion and can be locked in the circular groove portion of the sliding groove. The latch can be changed between a locked state and an active state with respect to the fixing piece. In the locked state, the latch engages with the circular groove portion. In the active state, the latch is in the sliding slot. The press handle has a connecting section fixed to the latch, and an operating section that can be pushed and extends outward from the connecting section out of the housing.

The elastic member is disposed between the seat body and the latch of the holder to constantly provide a resilient biasing force to drive the fixing head of the latch to be displaced toward the fixing piece.

The utility model has the advantages that the pressure pin is fixed to the pin, and the additional structure is not required to be pivotally mounted on the side frame, and the structure is relatively simple and convenient to assemble, thereby improving assembly efficiency and yield.

Therefore, another object of the present invention is to provide a walker that does not occupy the user's holding space.

Thus, the novel walker comprises a front frame, two side frames, and a folding device as described above.

The front frame is H-shaped and includes two sleeves on opposite sides.

The side frames are all inverted U-shaped and are rotatably disposed on the sleeves of the front frame.

The fixing pieces of the folding devices are respectively disposed on the sleeves of the front frame. The bases of the folding devices are respectively disposed on the side frames, and the pressure pins are respectively located on the sides of the side frames.

The utility model has the following advantages: since the pressure pressing handles are operated by pressing, it is not required to extend to a position suitable for the user to press the four fingers, but is respectively located on the side of the side frames so that the female fingers are pressed. The operation does not occupy the user's holding space, thereby avoiding impact on the user's hand.

Referring to Figures 3 and 4, an embodiment of the present invention includes a front frame 2, two side frames 3, and two folding devices 4.

The front frame 2 is H-shaped and includes a front tube 21 extending substantially laterally, and two sleeves 22 respectively located on opposite sides of the front tube 21. The sleeves 22 are erected.

The side frames 3 are all inverted U-shaped and are rotatably disposed on the sleeves 22 of the front frame 2, respectively. Each side frame 3 includes a grip section 31, a two curved rod section 32, two support rod sections 33, and a cross frame 34 suitable for the user to hold. The curved rod segments 32 are each bent downward from opposite ends of the grip portion 31. The support rod segments 33 are respectively connected to the curved rod segments 32 for supporting the weight of the user. The opposite ends of the cross frame 34 are respectively connected to the support rod segments 33 for reinforcing the structural strength of the entire side frame 3. One of the support rod segments 33 of the side frame 3 is inserted into one of the sleeves 22 of the front frame 2, and the other sleeve 22 is mounted by one of the support rod segments 33 of the other side frame 3.

Referring to Figures 5, 6, and 7, the folding devices 4 are disposed on the front frame 2 and the side frames 3, respectively. Each folding device 4 includes a fixing piece 41, a body 42, a holder 43, and an elastic member 44.

The fixing piece 41 is disposed on each of the sleeves 22 of the front frame 2 and adjacent to the side frame 3, and has a top surface 411, a bottom surface 412, and a sliding slot extending from the top surface 411 to the bottom surface 412. 413. The chute 413 has an arcuate groove portion 414 and a circular groove portion 415 that communicate with each other. The diameter of the circular groove portion 415 is larger than the diameter of the curved groove portion 414. The center of the arcuate groove portion 414 falls on the central axis of the sleeve 22.

The seat body 42 is disposed on the support rod section 33 of the one side frame 3 and is positioned above the fixing piece 41. The base 42 has a through slot 421 opening toward the sliding slot 413 and a sleeve groove 422 spaced from the through slot 421 . The through slot 421 extends along a length direction I and has a large aperture portion 423 , a small aperture portion 424 , a shoulder portion 425 separating the large aperture portion 423 and the small aperture portion 424 , and two guiding portions 426 . . The guiding portions 426 are connected to the large aperture portion 423 and extend along the longitudinal direction I.

The holder 43 is movably disposed in the through slot 421 of the base 42 and has a latch 45 and a pressing handle 46. The latch 45 has a self-axis L extending in the longitudinal direction I, and the latch 45 is movable along the self-axis L in the small aperture portion 424 of the through slot 421. The latch 45 also has a shaft 451, a fixed head 452 and an external thread 453. The shaft 451 is disposed through the sliding groove 413 of the fixing piece 41, and has an outer diameter smaller than a diameter of the arcuate groove portion 414 of the sliding groove 413. The fixing head 452 is disposed at the bottom of the shaft 451 and has an outer diameter larger than the diameter of the arcuate groove portion 414 and can be locked to the circular groove portion 415 of the sliding groove 413. The fixing head 452 of the latch 45 is in the shape of a truncated cone that gradually converges toward the shaft 451. The external thread 453 is disposed on the top of the shaft 451.

The pressure pin 46 is disposed in the through groove 421 and is movable along the length direction I. The pressing handle 46 has a connecting portion 461 disposed on the large aperture portion 423, an operating portion 462 extending outward from the connecting portion 461 outside the base portion 42, and two guiding blocks 463. The connecting portion 461 is partially disposed on the large aperture portion 423 and has a fixed end portion 464 and a threaded hole 465 formed in the fixed end portion 464. The fixed end portion 464 is disposed in the large aperture portion 423 of the through slot 421 and is fixed to the latch 45 through the screw hole 465. The threaded hole 465 is locked to the external thread 453 of the pressure pin 46. The operating section 462 has a curved curvature (see FIG. 11) that matches the curved section 32 and extends toward the gripping section 31 and has a pressing end 466 that can be urged. The pressing end 466 is adjacent to the side of the grip section 31 of the side frame 3 and is adapted for the user to press. The guiding blocks 463 are disposed to the fixed ends 464 of the connecting section 461 and are respectively located on opposite sides of the fixed end 464, and are slidably disposed on the guiding portions 426 of the through slots 421, respectively. Inside.

The elastic member 44 is disposed between the base 42 and the latch 45 of the holder 43 to constantly provide a resilient biasing force for displacing the fixing head 452 of the latch 45 toward the fixing piece 41. In this embodiment, the elastic member 44 is a compression spring and is sleeved on the latch 45. The opposite ends of the elastic member 44 abut against the shoulder portion 425 and the connecting portion 461 of the pressing handle 46.

Referring to FIG. 3, FIG. 4 and FIG. 5, the fixing pieces 41 of the folding device 4 are first assembled to the sleeves 22 of the front frame 2 by welding or the like, and then, One of the support rod segments 33 of each side frame 3 is inserted into the sleeve groove 422 of the seat body 42 of the folding device 4, and is inserted into each of the sleeves 22, and then the opposite ends of the cross frame 34 are respectively It is fixed to the support rod segments 33. Finally, the holder 43 is inserted into the through slot 421 of the base 42 and the guiding blocks 463 are respectively located in the guiding portions 426. Since the pressure pin 46 is fixed to the pin 45, it is not required to be additionally pivotally mounted on the side frame 3. The structure is relatively simple and convenient to assemble, and the assembly efficiency and yield can be improved.

Operating the pressure pin 46 can change the latch 45 relative to the fixed piece 41 between a locked state and an active state. As shown in FIG. 7 , FIG. 8 and FIG. 11 , in the locked state, the elastic member 44 is pushed against the latch 45 to engage the fixing head 452 with the circular groove portion 415 , and the side frame 3 is The folding device 4 is fixed and cannot be rotated on the sleeve 22. 9 and FIG. 10, when the pressing end portion 466 of the pressing handle 46 is pressed to displace the holder 43 along the length direction I, the pin 45 is forced to move downward along its own axis L, and the The fixing head 452 is separated from the circular groove portion 415, and the side frame 3 can be pushed to rotate the seat body 42 while the shaft 451 of the pin 45 is moved into the arcuate groove portion 414 of the sliding groove 413. This is the activity status. When the folding device 4 is in an active state, the connected side frame 3 can be rotated on the sleeve 22, and the side frame 3 is rotated to the front tube 21 adjacent to the front frame 2 to achieve folding. effect. When unfolding, the side frame 3 is rotated in the reverse direction until the latch 45 of the folding device 4 moves to the circular groove portion 415 of the sliding groove 413, and the pin 45 is pushed by the elastic member 44 to fix the pin 45. The head 452 is fastened to the circular groove portion 415 of the chute 413, and at this time, it returns to the fixed state as shown in FIGS. 7 and 8. The operation of the other folding device 4 and the corresponding side frame 3 is also the same.

Since the pressure-operated handle 46 is operated by pressing, it is not required to extend to a position suitable for the user to press the four fingers, but is located on the side of the side frames 3 so that the female finger can be pressed, so The user's holding space is occupied, thereby avoiding impact on the user's hand.

In summary, the structure of the folding device 4 is relatively simple, and is convenient to be assembled to the front frame 2 and the side frame 3, and the structural design of the pressing handle 46 does not occupy the user's holding space, and can avoid hitting the user. hand. Therefore, it is indeed possible to achieve the purpose of the present invention.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

1‧‧‧Travelers
11‧‧‧ Front Shelf
111‧‧‧ casing
12‧‧‧ side frame
121‧‧‧ Holding section
122‧‧‧Support rod
13‧‧‧Folding device
14‧‧‧Fixed tablets
141‧‧ ‧ chute
142‧‧‧Arc groove
143‧‧‧ Round groove
15‧‧‧ body
151‧‧‧Set holes
152‧‧‧Setting holes
16‧‧‧Latch
161‧‧‧ head
162‧‧‧ shaft
17‧‧‧ Spring
18‧‧‧ wrench
181‧‧‧Attendance
182‧‧‧Sets
183‧‧‧ Pulling section
184‧‧‧ hole sets
185‧‧‧ pivot hole
101‧‧‧ Fixed rod
102‧‧‧ pivot
2‧‧‧ Front Shelf
21‧‧‧Before
22‧‧‧ casing
3‧‧‧Side frame
31‧‧‧ Grip section
32‧‧‧Bend section
33‧‧‧Support rod section
34‧‧‧ transverse frame
4‧‧‧Folding device
41‧‧‧Fixed tablets
411‧‧‧ top surface
412‧‧‧ bottom
413‧‧ ‧ chute
414‧‧‧Arc groove
415‧‧‧ Round groove
42‧‧‧ body
421‧‧‧through slot
422‧‧‧Setting trough
423‧‧‧ Large aperture
424‧‧‧Small aperture
425‧‧‧ shoulder
426‧‧‧Guidance
43‧‧‧Retainer
44‧‧‧Flexible parts
45‧‧‧Tram
451‧‧‧ shaft
452‧‧‧Fixed head
453‧‧‧External thread
46‧‧‧ Press
461‧‧‧ Connection section
462‧‧‧Operation section
463‧‧‧Guiding block
464‧‧‧Fixed end
465‧‧‧Threaded holes
466‧‧‧ Pressing the end
I‧‧‧ Length direction
L‧‧‧ own axis

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a partial exploded view illustrating a conventional walker; Figure 2 is an incomplete stereo decomposition Figure 3 is a perspective view showing an embodiment of the present type of walking aid; Figure 4 is a partially exploded perspective view showing a front frame and a second embodiment of the embodiment Figure 5 is an incomplete partial exploded view showing a folding device of the embodiment; Figure 6 is a top view showing the body of the folding device in the embodiment Figure 7 is an incomplete cross-sectional view showing the folding device of the embodiment in a locked state; Figure 8 is an incomplete top view showing the folding device of the embodiment in the locked state; Figure 9 is an incomplete cross-sectional view showing the folding device of the embodiment in an active state; Figure 10 is an incomplete top view showing the folding device of the embodiment in the activity State; and Figure 11 is a side view showing a wrench of this embodiment positioned on the side of the side frame.

Claims (8)

A folding device for a walker adapted to be mounted on the walker, the walker comprising an H-shaped front frame, and a side frame that is inverted U-shaped and rotatably disposed on the front frame, the folding The device comprises: a fixing piece adapted to be disposed on the front frame of the walking device and adjacent to the side frame, the fixing piece comprising a top surface, a bottom surface, and a sliding slot extending from the top surface to the bottom surface, the sliding The groove has a curved groove portion and a circular groove portion connected to each other, the diameter of the circular groove portion is larger than the diameter of the curved groove portion; the body is suitable for being disposed on the side frame of the walker, the seat position Above the fixing piece, comprising a through slot facing the slot; and a fixing device movably disposed in the through slot of the seat body, comprising a latch and a pressing handle, the latch is movable along the axis thereof And having a shaft and a fixing head, the rod is inserted through the sliding groove of the fixing piece, and the outer diameter is smaller than the diameter of the arc groove portion of the sliding groove, and the fixing head is disposed at the bottom of the shaft And the outer diameter is larger than the diameter of the arcuate groove portion, and can be locked in the circular groove portion of the sliding groove, the latch can The fixing piece is changed between a locking state and an active state, and in the locking state, the fixing head is engaged with the circular groove portion, and in the active state, the shaft is in the sliding groove, The pressure handle has a connecting section fixed to the latch, and an operating section that can be pushed and extends outward from the connecting section out of the housing; and an elastic member disposed on the latch of the base and the retainer Between the two, a resilient biasing force is provided to drive the fixed head of the latch toward the fixed piece. The folding device of claim 1, wherein the through groove of the seat body has a guiding portion extending in a direction parallel to the pin, the pressing piece further having a guide disposed to the connecting portion The lead block is slidably disposed at the guiding portion of the through slot. The folding device of claim 1, wherein the through slot of the base has a large aperture portion for receiving the connecting portion of the pressure pin, a small aperture portion for receiving the latch, and a large aperture And a shoulder portion of the small aperture portion, the elastic member adopts a compression spring and is sleeved on the insertion pin, and the opposite ends of the elastic member respectively abut against the connecting portion of the shoulder portion and the pressing handle. The folding device of claim 1, wherein the fixing head of the latch is in the shape of a truncated cone that gradually converges toward the shaft. The folding device of claim 1, wherein the latch further has an external thread disposed on a top portion of the shaft, the connecting portion of the pressure cap having a threaded hole for locking the external thread. A walking aid comprising: a front frame, having an H shape, comprising two sleeves respectively on opposite sides; and two side frames each having an inverted U shape, rotatably respectively disposed on the sleeve of the front frame And a folding device according to claim 1, wherein the fixing pieces of the folding device are respectively disposed on the sleeves of the front frame, the seats of the folding devices are respectively disposed on the side frames, and the same The pressure pins are respectively located on the sides of the side frames. The walker of claim 6, wherein each of the side frames includes a grip section adapted to be gripped by the user, and two curved section respectively bent downward from opposite ends of the grip section, The operating segments of the press handles of the folding devices have curved curvatures that match the curved segments, and the operating segments extend toward the respective grip segments, respectively. The walker of claim 6, wherein the operating section of the pressing handle of each folding device has a pressing end adapted to be pressed by a user, the pressing end being adjacent to a side of the grip section of the side frame.