CN220735646U - Wheelchair pedal angle adjusting device - Google Patents
Wheelchair pedal angle adjusting device Download PDFInfo
- Publication number
- CN220735646U CN220735646U CN202322089603.0U CN202322089603U CN220735646U CN 220735646 U CN220735646 U CN 220735646U CN 202322089603 U CN202322089603 U CN 202322089603U CN 220735646 U CN220735646 U CN 220735646U
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- Prior art keywords
- rod
- pedal
- sliding block
- sliding
- pressing plate
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- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
The utility model discloses a wheelchair pedal angle adjusting device which comprises a pedal rear rod, a pedal front rod, a connecting rod, a sliding block and a locking structure, wherein the pedal rear rod is fixedly connected with a wheelchair frame, the pedal front rod is hinged with the pedal rear rod, the pedal front rod is used for connecting pedals, one end of the connecting rod is fixedly connected with the pedal rear rod, the sliding block is rotatably connected with the other end of the connecting rod, one end of the sliding rod is hinged with the pedal front rod, the sliding rod can slide relative to the sliding block, and the locking structure is used for locking the sliding rod on the sliding block. Compared with the prior art, the wheelchair pedal angle adjusting device is simple in structure, convenient to operate and low in production cost.
Description
Technical Field
The utility model relates to the technical field of wheelchairs, in particular to a pedal angle adjusting device of a wheelchair.
Background
Along with the continuous perfection of the functionality of the existing wheelchair, the wheelchair can meet the sitting and lying demands of patients, and accordingly, the pedal angle of the wheelchair needs to be adaptively adjusted according to the posture of the patients so as to improve the sitting and lying comfort of the patients.
Currently, most of wheelchairs in the market adopt a cylinder driving mode to adjust the pedal angle, for example, a pedal adjusting auxiliary device and a wheelchair disclosed in Chinese patent publication No. CN212281920U comprise a backrest, a seat frame, a driving piece, a connecting rod, pedals and leg supports, wherein the backrest and the leg supports are respectively hinged with two opposite ends on the seat frame, the backrest is arranged on the upper part of the seat frame, the leg supports are arranged on the lower part of the seat frame, the first end of the driving piece is hinged with the bottom of the seat frame, and the second end of the driving piece is hinged with the upper part of the leg supports in the middle of the leg supports. The tail end of the leg support is hinged with the middle end of the pedal, the upper end of the connecting rod is hinged with the bottom of the seat frame, and the lower end of the connecting rod is hinged with the tail end of the pedal. When the leg support is used, the angle change of the leg support relative to the seat frame can be controlled through the extension and contraction of the driving piece. The cylinder with the telescopic structure is used as a driving piece, so that the complexity of the structure is increased, and the production cost is increased.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: in the prior art, the structure for adjusting the pedal angle is relatively complex and expensive, and based on the structure, the utility model provides the wheelchair pedal angle adjusting device which is relatively simple in structure and low in production cost.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a wheelchair pedal angle adjusting device, includes pedal back pole, pedal front rod, connecting rod, slide bar, slider and locking structure, pedal back pole be used for with wheelchair frame fixed connection, pedal front rod with pedal back pole is articulated, be used for connecting pedal on the pedal front rod, the one end of connecting rod with pedal back pole fixed connection, the slider with the other end of connecting rod rotationally connects, the one end of slide bar with pedal front rod is articulated, just the slide bar is relative the slider slidable, locking structure is used for with the slide bar locking is in on the slider.
Further, a cavity is formed in the sliding block, the sliding rod slidably penetrates through the sliding block, the locking structure comprises a pressing plate and a spring, the pressing plate and the spring are all arranged in the cavity and sleeved outside the sliding rod, the spring is arranged between the cavity wall of the sliding block and the pressing plate, a limiting piece propped against one end of the pressing plate is arranged on one side, away from the spring, of the pressing plate in the cavity of the sliding block, a through hole for the sliding rod to penetrate through is formed in the pressing plate, and the aperture of the through hole is larger than the diameter of the sliding rod.
Further, the limiting piece comprises an arc portion and a poking portion which are connected with each other, the arc portion is rotatably installed in the cavity of the sliding block, one end of the pressing plate is propped against the arc portion, and the poking portion can be driven to rotate by rotating the arc portion so as to push the pressing plate to move.
Further, an L-shaped control rod is fixedly installed on the arc part, and the L-shaped control rod penetrates through the side wall of the sliding block and then extends to the outside of the sliding block.
Further, the poking part is provided with a poking hole, the poking part is sleeved outside the sliding rod through the poking hole, and the aperture of the poking hole is larger than the diameter of the sliding rod.
Further, a guide sleeve is fixedly connected to one side of the sliding block, and the guide sleeve is slidably sleeved outside the sliding rod.
Further, knurling is arranged on the outer surface of the sliding rod.
Further, the sliding block is of a sleeve-shaped structure, the sliding rod slidably penetrates through the sliding block, the locking structure is a bolt which is installed on the side wall of the sliding block in a threaded mode, and the end portion of the bolt can extend into the inner cavity of the sliding block and then abuts against the outer wall of the sliding rod.
The beneficial effects of the utility model are as follows: compared with the traditional pedal angle adjusting device which adjusts the pedal angle through a telescopic cylinder, the pedal angle adjusting device for the wheelchair omits an expensive cylinder structure, drives the pedal front rod to swing together with the pedal on the pedal front rod through sliding the sliding rod relative to the sliding block, and locks the pedal through the locking structure, so that the pedal can be locked to a proper position.
Drawings
The utility model is further described below with reference to the drawings and examples.
FIG. 1 is a perspective view of a wheelchair pedal angle adjustment apparatus of the present utility model;
FIG. 2 is a partially exploded view of the wheelchair pedal angle adjustment mechanism of FIG. 1;
FIG. 3 is a perspective view of the connection structure between the slide bar, the slider and the locking structure of the wheelchair pedal angle adjustment apparatus shown in FIG. 1;
FIG. 4 is an exploded view of FIG. 3;
fig. 5 is a front view of fig. 3;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5 (with the locking structure in a locked state);
fig. 7 is another state sectional view of fig. 6 (the locking structure is in an unlocked state).
In the figure: 1. pedal rear rod 2, pedal front rod 3, connecting rod, 4, slide bar, 5, slider, 51, perforation, 52, uide bushing, 6, locking structure, 61, clamp plate, 611, through-hole, 62, spring, 63, locating part 631, circular arc portion, 632, stirring portion, 6321, dodge hole, 7, L shape control lever.
Detailed Description
The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.
Referring to fig. 1-7, the utility model provides a wheelchair pedal angle adjusting device, which comprises a pedal rear rod 1, a pedal front rod 2, a connecting rod 3, a sliding rod 4, a sliding rod 5 and a locking structure 6, wherein the pedal rear rod 1 is fixedly connected with a wheelchair frame, the pedal front rod 2 is hinged with the pedal rear rod 1, the pedal front rod 2 is used for connecting pedals, one end of the connecting rod 3 is fixedly connected with the pedal rear rod 1, the sliding rod 5 is rotatably connected with the other end of the connecting rod 3, one end of the sliding rod 4 is hinged with the pedal front rod 2, the sliding rod 4 can slide relative to the sliding rod 5, and the locking structure 6 is used for locking the sliding rod 4 on the sliding rod 5.
The pedal angle adjusting device for the wheelchair is characterized in that a pedal rear rod 1 is fixedly connected to a frame of the wheelchair during installation, and pedals for users to put feet are arranged at the lower end of a pedal front rod 2. When the user needs to adjust the pedal angle, the locking structure 6 is operated to unlock the sliding rod 4 and the sliding block 5, and at this time, the sliding rod 4 can slide relative to the sliding block 5. Then, the user moves the sliding rod 4 relative to the sliding rod 5, and the movement of the sliding rod 4 can drive the pedal front rod 2 to rotate relative to the pedal rear rod 1, so as to drive the pedal to rotate, and meanwhile, the sliding rod 5 can adaptively rotate relative to the connecting rod 3 under the drive of the sliding rod 4. When the pedals are rotated to the proper positions, the user again operates the locking structure 6 to lock the sliding rod 4 on the sliding block 5, and at this time, the angles of the pedals are adjusted to be in place.
Referring to fig. 4 and fig. 6-7 again, in the present embodiment, the sliding block 5 has a cavity, the sliding rod 4 slidably passes through the sliding block 5, the locking structure 6 includes a pressing plate 61 and a spring 62 both disposed in the cavity and sleeved outside the sliding rod 4, the spring 62 is disposed between the cavity wall of the sliding block 5 and the pressing plate 61, a limiting member 63 is disposed in the cavity of the sliding block 5 at a side of the pressing plate 61 far away from the spring 62, and the limiting member 63 abuts against one end of the pressing plate 61, thereby limiting the end of the pressing plate 61 and preventing the end from moving. The pressing plate 61 is provided with a through hole 611 for passing through the sliding rod 4, the diameter of the through hole 611 is larger than that of the sliding rod 4, the pressing plate 61 is inclined under the action of the elastic force of the spring 62, so that the end of the hole wall of the through hole 611 is clamped with the outer wall of the sliding rod 4, and at the moment, the sliding rod 4 cannot move relative to the sliding block 5, and the sliding rod 4 is locked on the sliding block 5. In order to raise the locking force between the wall of the through hole 611 and the slide bar 4, knurling is provided on the outer surface of the slide bar 4.
When the spring 62 is in a natural state, the pressing plate 61 is in an inclined state relative to the sliding rod 4 under the action of the elastic force of the spring 62, the central axis of the through hole 611 on the pressing plate 61 is not parallel to the central axis of the sliding rod 4, the hole wall end of the through hole 611 is in contact with the outer wall of the sliding rod 4, and the deflection action of the pressing plate 61 interferes with the sliding rod 4, so that the pressing plate 61 can limit the sliding of the sliding rod 4 by virtue of the friction force between the hole wall end of the through hole 611 and the outer wall of the sliding rod 4 in the inclined state, and the sliding rod 4 is locked.
The limiting piece 63 is rotatable relative to the sliding block 5, the limiting piece 63 comprises an arc portion 631 and a poking portion 632 which are connected with each other, the arc portion 631 is rotatably installed in a cavity of the sliding block 5, the arc portion 631 is approximately of a cylindrical structure, the poking portion 632 is of a sheet-shaped structure, one end of the pressing plate 61 abuts against the arc portion 631, and the poking portion 632 can be driven to rotate by rotating the arc portion 631 so as to push the pressing plate 61 to move so as to compress the spring 62. When the pressing plate 61 moves by compressing the spring 62, the pressing plate 61 is deflected around the contact point of the pressing plate 61 with the arc portion 631, and after the pressing plate 61 is deflected, the end of the hole wall of the through hole 611 on the pressing plate 61 is separated from the outer wall of the sliding rod 4, at this time, the pressing plate 61 and the sliding rod 4 are not contacted, and no friction force is generated between the pressing plate 61 and the sliding rod 4, so that the sliding rod 4 can move relative to the pressing plate 61, and at this time, the sliding rod 4 can move relative to the sliding block 5.
Referring to fig. 3 and 4, in order to facilitate the rotation of the limiting member 63, an L-shaped control rod 7 is fixedly mounted on the arc portion 631, and the L-shaped control rod 7 extends to the outside of the slider 5 after passing through the side wall of the slider 5. The side wall of the slide block 5 is provided with a through hole 51, and the L-shaped control rod 7 rotatably penetrates through the through hole 51. When in use, a user rotates the L-shaped control rod 7 to drive the arc part 631 to rotate, so that the poking part 632 pushes the pressing plate 61 to move, at this time, the locking structure 6 is in an unlocking state, and the user can move the sliding rod 4 relative to the sliding block 5. When the sliding rod 4 moves to a proper position, the L-shaped control rod 7 is released, at this time, the pressing plate 61 is pushed back to the initial position under the action of the elastic force of the spring 62, and at the same time, the movement of the pressing plate 61 drives the stirring portion 632 to rotate, so that finally the L-shaped control rod 7 automatically rotates reversely to the initial position, and at this time, the locking structure 6 returns to the locking state again.
In addition, the poking part 632 is provided with a poking hole 6321, the poking part 632 is sleeved outside the sliding rod 4 through the poking hole 6321, and the aperture of the poking hole 6321 is larger than the diameter of the sliding rod 4, so that the poking part 632 cannot block the movement of the limiting part 63 when the limiting part rotates.
Further, one side fixedly connected with uide bushing 52 of slider 5, uide bushing 52 slidable ground cover is established in the outside of slide bar 4, and the area of contact between slide bar 4 and uide bushing 52 has been increased to uide bushing 52's setting, has played direction, spacing effect to the slip of slide bar 4, has effectively prevented that slide bar 4 from taking place the condition of gathering easily relative slider 5, has promoted slide stability of slide bar 4.
In other embodiments, not shown, the sliding block 5 may also be a sleeve-shaped structure, and the sliding rod 4 slidably penetrates the sliding block 5, where the locking structure 6 is a bolt that is screwed on a side wall of the sliding block 5, and an end of the bolt may extend into an inner cavity of the sliding block 5 and then abut against an outer wall of the sliding rod 4, so that a user can lock the sliding rod 4 on the sliding block 5 by screwing the bolt. The specific structure of the locking structure 6 is not limited by the present utility model, and it is only required that the sliding rod 4 can be locked on the sliding block 5 after the sliding rod 4 slides in place.
Compared with the traditional pedal angle adjusting device which adjusts the pedal angle through a telescopic cylinder, the pedal angle adjusting device for the wheelchair omits an expensive cylinder structure, drives the pedal front rod 2 to swing together with the pedal on the pedal front rod through sliding the sliding rod 4 relative to the sliding block 5, and locks the pedal through the locking structure 6, so that the pedal can be locked to a proper position.
While the foregoing is directed to the preferred embodiment of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (8)
1. The utility model provides a wheelchair pedal angle adjusting device which characterized in that: including pedal back pole, pedal front rod, connecting rod, slide bar, slider and locking structure, pedal back pole be used for with wheelchair frame fixed connection, pedal front rod with pedal back pole is articulated, be used for connecting pedal on the pedal front rod, the one end of connecting rod with pedal back pole fixed connection, the slider with the other end of connecting rod is rotationally connected, the one end of slide bar with pedal front rod is articulated, just the slide bar is relative the slider slidable, locking structure is used for with the slide bar locking is in on the slider.
2. The wheelchair pedal angle adjustment apparatus of claim 1 wherein: the sliding block is provided with a cavity, the sliding rod slidably penetrates through the sliding block, the locking structure comprises a pressing plate and a spring, the pressing plate and the spring are arranged in the cavity and sleeved outside the sliding rod, the spring is arranged between the cavity wall of the sliding block and the pressing plate, a limiting part propped against one end of the pressing plate is arranged on one side, away from the spring, of the pressing plate in the cavity of the sliding block, a through hole for the sliding rod to pass through is formed in the pressing plate, and the aperture of the through hole is larger than the diameter of the sliding rod.
3. The wheelchair pedal angle adjustment apparatus of claim 2 wherein: the limiting piece comprises an arc portion and a poking portion which are connected with each other, the arc portion is rotatably installed in the cavity of the sliding block, one end of the pressing plate is propped against the arc portion, and the poking portion can be driven to rotate by rotating the arc portion so as to push the pressing plate to move.
4. A wheelchair pedal angle adjustment as claimed in claim 3, characterised in that: the arc part is fixedly provided with an L-shaped control rod, and the L-shaped control rod penetrates through the side wall of the sliding block and then extends to the outside of the sliding block.
5. A wheelchair pedal angle adjustment as claimed in claim 3, characterised in that: the dial portion is provided with an avoidance hole, the dial portion is sleeved outside the sliding rod through the avoidance hole, and the aperture of the avoidance hole is larger than the diameter of the sliding rod.
6. The wheelchair pedal angle adjustment apparatus of claim 2 wherein: one side of the sliding block is fixedly connected with a guide sleeve, and the guide sleeve is slidably sleeved outside the sliding rod.
7. The wheelchair pedal angle adjustment of any one of claims 2-6 wherein: the outer surface of the sliding rod is provided with knurling.
8. The wheelchair pedal angle adjustment apparatus of claim 1 wherein: the sliding block is of a sleeve-shaped structure, the sliding rod slidably penetrates through the sliding block, the locking structure is a bolt which is installed on the side wall of the sliding block in a threaded mode, and the end portion of the bolt can extend into the inner cavity of the sliding block and then abuts against the outer wall of the sliding rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322089603.0U CN220735646U (en) | 2023-08-04 | 2023-08-04 | Wheelchair pedal angle adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322089603.0U CN220735646U (en) | 2023-08-04 | 2023-08-04 | Wheelchair pedal angle adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220735646U true CN220735646U (en) | 2024-04-09 |
Family
ID=90570919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322089603.0U Active CN220735646U (en) | 2023-08-04 | 2023-08-04 | Wheelchair pedal angle adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220735646U (en) |
-
2023
- 2023-08-04 CN CN202322089603.0U patent/CN220735646U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A wheelchair foot angle adjustment device Granted publication date: 20240409 Pledgee: Bank of Nanjing Co.,Ltd. Taizhou Branch Pledgor: ZHONGJIN MEDICAL DEVICES TAIZHOU CO.,LTD. Registration number: Y2024980036562 |