A detachable wheelchair leg support bracket and wheelchair

Abstract

The utility model provides a detachable wheelchair leg support bracket and wheelchair, including foot support bracket and connecting seat, and foot support bracket is connected with wheelchair main part through connecting seat, wheelchair main part is equipped with the insertion hole, and connecting seat is inserted in the insertion hole with wheelchair main part is connected through connecting shaft, the limiting piece that slides is equipped on connecting seat, and wheelchair main part is equipped with the limiting part that cooperates with limiting piece, limiting piece includes locking position and unlocking position, when limiting piece is at locking position, limiting piece is locked with limiting part, and limiting piece restricts connecting shaft to separate insertion hole, and foot support bracket is in fixed state, and limiting piece transverse sliding separates limiting part is pushed, and limiting piece removes to connecting shaft's axial location, and connecting shaft can along insertion hole removes or rotates and adjusts foot support bracket angle. User only needs single hand to complete installation, dismounts or angle adjustment, and whole process does not need two hands to operate, and the operation threshold of limited limb is reduced obviously, and the stable fixing and one -key type unlocking of foot support bracket are realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of daily necessities, specifically relating to a detachable wheelchair leg support bracket and a wheelchair. Background Technology

[0002] As an important mobility tool for people with mobility impairments, the ease of use in wheelchair design directly impacts the user experience. Leg supports are a key component of wheelchairs, supporting the user's legs; their adjustability and ease of disassembly are crucial for improving comfort and storage efficiency.

[0003] Most leg rests use a mechanical locking structure, requiring both hands to unlock. While some leg rests support angle adjustment, the locking mechanism still needs to be completely disassembled before adjustment, making it impossible to achieve a seamless "unlock-adjust-lock" operation, resulting in low efficiency. Furthermore, operating with both hands requires the user to bend over or lean to the side, which can easily cause the wheelchair's center of gravity to become unstable, increasing the risk of falls. If the locking mechanism unexpectedly springs back after unlocking, it may also pinch fingers. Utility Model Content

[0004] This utility model provides a detachable wheelchair leg support bracket and wheelchair, aiming to solve the problem that existing wheelchair leg support brackets require two-hand operation and cannot be quickly disassembled.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, the present invention provides a detachable wheelchair leg support bracket, including a foot support bracket and a connecting seat, wherein the foot support bracket is connected to the wheelchair body through the connecting seat;

[0007] The wheelchair body is provided with a plug-in hole, and the connecting seat is connected to the wheelchair body by plugging into the plug-in hole through a connecting shaft;

[0008] A limiting member is slidably provided on the connecting seat, and the wheelchair body is provided with a limiting part that cooperates with the limiting member;

[0009] The limiting member includes a locking position and an unlocking position; when the limiting member is in the locking position, the limiting member is locked to the limiting part, and the limiting member restricts the connecting shaft from disengaging from the insertion hole, and the foot support bracket is in a fixed state; when the limiting member is pushed to slide laterally away from the limiting part, the limiting member releases the axial limitation on the connecting shaft, and the connecting shaft can move out along the insertion hole or rotate to adjust the angle of the foot support bracket.

[0010] In a preferred embodiment, the connecting shaft is fixed to the connecting seat by screws.

[0011] In a preferred embodiment, the limiting part is a limiting boss provided on the wheelchair body. When the limiting part is in the locked position, the lower end of the limiting part abuts against the bottom of the limiting boss.

[0012] Based on the above solution, a vertical stop is formed by the contact between the lower end of the limiting member and the limiting boss, which effectively prevents the connecting shaft from accidentally coming out of the insertion hole under the action of gravity or external force.

[0013] In a preferred embodiment, the limiting member includes an operating part and a locking part, the operating part being disposed on the top of the connecting seat, and the locking part being located below the connecting seat;

[0014] When the limiting member is in the locked position, the locking part contacts the limiting part, and the limiting member restricts the connecting shaft from disengaging from the insertion hole, and the foot support bracket is in a fixed state; when the operating part is pushed, the locking part disengages from the limiting part, and the limiting member releases the axial restriction on the connecting shaft, so that the connecting shaft can move out along the insertion hole or rotate to adjust the angle of the foot support bracket.

[0015] Based on the above scheme, the design is ergonomic and allows for one-handed operation, enabling patients to complete the disassembly and installation of the stent with just one hand.

[0016] In a preferred embodiment, the locking part is a limiting hook that bends toward the limiting boss.

[0017] Based on the above scheme, a mechanical interlock is formed with the limiting boss through a hook-shaped structure. When the limiting component is in the locked position, the bent part of the limiting hook hooks the edge of the limiting boss. The vertical contact surface between the hook body and the boss prevents the connecting shaft from coming off upward. At the same time, the limiting hook ensures that when unlocking, the hook body can be smoothly disengaged from the boss by simply pushing the operating part horizontally. This provides a stronger impact-resistant locking force than planar contact and maintains the smoothness of one-handed operation.

[0018] In a preferred embodiment, the operating part is an operating block located on top of the connector.

[0019] In a preferred embodiment, the limiting member is laterally slidably disposed on the connecting seat, and the connecting seat is provided with a reset cavity;

[0020] The reset cavity is provided with an elastic element, and the two ends of the elastic element abut against the limiting element and the inner wall of the reset cavity, respectively. When the limiting element is in the unlocked position, the elastic element is compressed and stores energy. After the elastic element is released, it automatically drives the limiting element to reset to the locked position.

[0021] Based on the above scheme, the self-locking function of the limit component is achieved by the compression energy storage and automatic reset characteristics of the elastic component. When the limit component is pushed to the unlock position by one hand, the elastic component is compressed and stores energy. At this time, the connecting shaft can move or rotate freely. After releasing the operating force, the elastic component automatically rebounds and drives the limit component to reset to the locked position. This ensures that the locked state can be automatically restored without manual return after each unlocking. This avoids the safety hazards caused by forgetting to reset, and reduces the impact through elastic buffering. At the same time, the reset cavity provides a directional movement track for the elastic component to prevent jamming, so that the one-handed operation process forms a complete self-locking cycle.

[0022] In a preferred embodiment, the limiting member further includes a connecting portion located within the reset cavity, and the reset cavity is provided with a guide post for guiding the elastic element; the elastic element is sleeved on the guide post, one end of the elastic element abuts against the connecting portion, and the other end of the elastic element abuts against the inner wall of the reset cavity;

[0023] The guide post includes a fixed end and a free end. The fixed end is connected to the connecting part. When the limiting member is pushed to the unlocked position, the free end of the guide post abuts against the inner wall of the reset cavity.

[0024] Based on the above scheme, when the limiting member is pushed to the unlocking position, the free end of the guide post abuts against the inner wall of the reset cavity to form a hard stop, which not only limits the maximum compression stroke to prevent the elastic member from being overloaded, but also guides the elastic member to keep it in a straight line of extension and contraction, ensuring that the locking part can return to the locking position of the limiting boss every time it is reset.

[0025] In a preferred embodiment, the insertion hole is arranged vertically, the connecting shaft is vertically inserted into the insertion hole, and the limiting member is slidably arranged on the connecting seat in the front-to-back horizontal direction.

[0026] Based on the above design, the vertically positioned insertion hole allows the connecting shaft to remain naturally inserted under gravity. Simultaneously, the horizontally sliding limiting component prevents the connecting shaft from disengaging through lateral constraint. When disassembly is required, simply push the limiting component horizontally to release the constraint, and a slight lift completes the disassembly and installation of the footrest bracket, ensuring the stability of the bracket during daily use. The limiting component's forward and backward horizontal sliding direction is specifically adapted to the ergonomic characteristics of wheelchair users. Unlocking is achieved by naturally extending the user's arm forward to push or pull the limiting component while seated, and the unlocking direction is perpendicular to the direction of gravity, avoiding the risk of accidental unlocking. This structure improves the user's success rate and shortens operation time.

[0027] Secondly, this utility model provides a wheelchair, including: the wheelchair leg support bracket as described in any of the embodiments of the first aspect.

[0028] The beneficial effects of this utility model are as follows:

[0029] This invention provides a detachable wheelchair leg support bracket and wheelchair. Through a plug-in structure and sliding limiters, the wheelchair leg support can be quickly disassembled and installed. The leg support bracket is quickly plugged into and unplugged from the wheelchair body via a connecting shaft. Combined with the interactive locking between the sliding limiter on the connecting seat and the wheelchair's limiting part, users can complete the installation, disassembly, or angle adjustment with just one hand, eliminating the need for two-handed operation. This significantly lowers the operational threshold for users with limb limitations and achieves stable fixation and one-button unlocking of the leg support bracket. The locked position ensures safe use, and after unlocking, it can be completely disassembled for easy wheelchair seating and the leg support angle can be rotated and adjusted to accommodate different sitting postures. This solves the problems of cumbersome disassembly and assembly and inconvenient angle adjustment in traditional wheelchair leg supports, making it particularly suitable for scenarios requiring frequent leg support adjustments, such as rehabilitation training and daily care. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a first schematic diagram of the detachable wheelchair leg support structure of this utility model.

[0032] Figure 2 This is a second schematic diagram of the detachable wheelchair leg support structure in this utility model.

[0033] Figure 3 yes Figure 2 Enlarged view of point A.

[0034] Figure 4 This is the third schematic diagram of the detachable wheelchair leg support structure in this utility model.

[0035] Explanation of the labels in the diagram:

[0036] 1-Foot support bracket; 2-Wheelchair body; 3-Connecting seat; 4-Connecting shaft; 5-Limiting component; 51-Operating part; 52-Connecting part; 53-Locking part; 6-Limiting part; 7-Reset cavity; 8-Guide column. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0038] Example 1:

[0039] See Figures 1-4 This embodiment provides a detachable wheelchair leg support bracket, including a foot support bracket 1 and a connecting seat 3, wherein the foot support bracket 1 is connected to the wheelchair body 2 through the connecting seat 3;

[0040] The wheelchair body 2 is provided with a plug hole, and the connecting seat 3 is connected to the wheelchair body 2 by plugging into the plug hole through a connecting shaft 4;

[0041] The connecting seat 3 is slidably provided with a limiting member 5, and the wheelchair body 2 is provided with a limiting part 6 that cooperates with the limiting member 5;

[0042] The limiting member 5 includes a locking position and an unlocking position; when the limiting member 5 is in the locking position, the limiting member 5 is locked with the limiting part 6, and the limiting member 5 restricts the connecting shaft 4 from disengaging from the insertion hole, and the foot support bracket 1 is in a fixed state; when the limiting member 5 is pushed to slide laterally away from the limiting part 6, the limiting member 5 releases the axial restriction on the connecting shaft 4, and the connecting shaft 4 can move out along the insertion hole or rotate to adjust the angle of the foot support bracket 1.

[0043] The connecting shaft 4 is fixed to the connecting seat 3 by screws.

[0044] Specifically, the connecting shaft 4 is a cylinder, which is vertically suspended below the rear end of the connecting seat 3 by screws.

[0045] See Figure 2-3 In order to lock the connecting shaft 4, based on any of the above solutions, the limiting part 6 is a limiting boss provided on the wheelchair body 2. When the limiting member 5 is in the locked position, the lower end of the limiting member 5 abuts against the bottom of the limiting boss.

[0046] Specifically, when the leg support bracket needs to be installed, the connecting shaft 4 at the bottom of the connecting seat 3 is aligned with the insertion hole on the wheelchair body 2 and inserted vertically. Before inserting the connecting shaft 4, the limiting member 5 temporarily slides outward to compress the elastic member. When the connecting shaft 4 is fully inserted, the limiting member 5 automatically slides inward under the restoring force of the elastic member. At this time, the lower end of the limiting member 5 slides in and abuts against the lower limit boss of the wheelchair body 2, forming a mechanical interlock. The vertical contact surface between the limiting member 5 and the limit boss prevents the connecting shaft 4 from coming out upward, thus completing the locking.

[0047] In addition, the limiting member 5 includes an operating part 51 and a locking part 53. The operating part 51 is disposed on the top of the connecting seat 3, and the locking part 53 is located below the connecting seat 3.

[0048] When the limiting member 5 is in the locked position, the locking part 53 contacts the limiting part 6, and the limiting member 5 restricts the connecting shaft 4 from disengaging from the insertion hole, and the foot support bracket 1 is in a fixed state; when the operating part 51 is pushed, the locking part 53 disengages from the limiting part 6, the limiting member 5 releases the axial limitation on the connecting shaft 4, and the connecting shaft 4 can move out along the insertion hole or rotate to adjust the angle of the foot support bracket 1.

[0049] The locking part 53 is a limiting hook that bends toward the limiting boss.

[0050] Specifically, the limiting member 5 includes an operating part 51 that is slidably disposed on the connecting seat 3, and the locking part 53 is a limiting hook that extends downward and penetrates the connecting seat 3, and the limiting hook bends toward the limiting boss to lock with the limiting boss, thereby restricting the vertical movement of the connecting shaft 4.

[0051] To facilitate user unlocking, based on any of the above solutions, the operation unit 51 is an operation block located on top of the connector 3.

[0052] Specifically, the operating part 51 is an operating block located in the top center area of ​​the connecting seat 3. The operating block has a protrusion, and the user can easily unlock the footrest bracket 1 by pushing the protrusion.

[0053] The limiting member 5 is laterally slidably disposed on the connecting seat 3, and the connecting seat 3 is provided with a reset cavity 7;

[0054] The reset cavity 7 is provided with an elastic element, and the two ends of the elastic element abut against the limiting element 5 and the inner wall of the reset cavity 7 respectively; when the limiting element 5 is in the unlocked position, the elastic element is compressed and stores energy; after the elastic element is released, it automatically drives the limiting element 5 to reset to the locked position.

[0055] The limiting member 5 also includes a connecting part 52, which is located inside the reset cavity 7. The reset cavity 7 is provided with a guide post 8 for guiding the elastic member. The elastic member is sleeved on the guide post 8, with one end of the elastic member abutting against the connecting part 52 and the other end of the elastic member abutting against the inner wall of the reset cavity 7.

[0056] Specifically, a reset cavity 7 is located inside the connecting seat 3. The reset cavity 7 has through openings at both the top and bottom. The connecting portion 52 of the limiting member 5 extends from these openings and inserts into the reset cavity 7. A washer is fitted to the bottom of the extended section of the connecting portion 52 with a screw, forming a sliding seal with the opening. This ensures that the connecting portion 52 can slide freely back and forth while preventing dust from entering the reset cavity 7 and affecting the mechanism's operation. A compression spring is horizontally installed inside the reset cavity 7 as an elastic element. The front end of the spring abuts against the inner front wall of the reset cavity 7, and the rear end abuts against the front wall of the connecting portion 52. When an external force pushes the limiting member 5 outward, the connecting portion 52 causes the washer to slide along the opening, simultaneously compressing the spring to store energy. After the external force is removed, the spring's rebound force pushes the entire limiting member 5 back to its original position through the front wall of the connecting portion 52.

[0057] The guide post 8 includes a fixed end and a free end. The fixed end is connected to the connecting part 52. When the limiting member 5 is pushed to the unlocked position, the free end of the guide post 8 abuts against the inner wall of the reset cavity 7.

[0058] Specifically, the guide post 8 and the limiting member 5 are integrally formed. The guide post 8 is horizontally arranged in the reset cavity 7, and the length of the guide post 8 is less than the length of the reset cavity 7. The compression spring is sleeved on the guide post 8.

[0059] See Figure 2 and Figure 4 In addition, the insertion hole is arranged vertically, the connecting shaft 4 is vertically inserted into the insertion hole, and the limiting member 5 is slidably arranged on the connecting seat 3 in the front-to-back horizontal direction.

[0060] Specifically, the insertion hole is vertically arranged on the wheelchair body, and the connecting shaft 4 is inserted into the insertion hole from top to bottom. The limiting member 5 slides horizontally in the front-back direction. When the limiting member 5 is pushed forward to the unlock position with one hand, the elastic member is compressed, the limiting hook of the limiting member 5 disengages from the limiting boss, and the connecting shaft 4 can be pulled out, thereby disassembling the footrest bracket 1. When the limiting member 5 is in the locked position, the elastic member is in a telescopic state, and the limiting hook hooks onto the lower part of the limiting boss, thereby preventing the connecting shaft 4 from disengaging from the insertion hole, thus realizing the quick installation and fixation of the footrest bracket 1.

[0061] Example 2:

[0062] This embodiment provides a wheelchair, including: the wheelchair leg support bracket as described in any of the embodiments in Example 1.

[0063] The following explanation, based on the working principle, further illustrates this utility model:

[0064] Slide the limiting member 5 forward to disengage the limiting hook from the limiting boss. Align the connecting shaft 4 of the footrest bracket 1 vertically with the insertion hole on the wheelchair body 2 and insert it. Release the limiting member 5. The elastic member rebounds, causing the limiting hook to catch the limiting boss and prevent the connecting shaft 4 from moving upward out of the insertion hole. Push the operating part 51 of the limiting member 5 horizontally with one hand to slide the limiting member 5 forward. The limiting hook disengages from the limiting boss and compresses the elastic member to store energy, releasing the axial constraint of the connecting shaft 4. Keep the limiting member 5 in the unlocked position and rotate the connecting shaft 4 to adjust the angle of the footrest bracket 1. After releasing the operating part 51, the limiting member 5 automatically resets and locks. Lift the footrest bracket 1 directly upward to pull the connecting shaft 4 vertically out of the insertion hole to complete the disassembly.

[0065] This utility model is not limited to the above-mentioned optional embodiments. Under the premise of non-contradiction, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the guidance of this utility model. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope of the claims of this utility model are within the protection scope of this utility model.

Claims

1. A detachable wheelchair leg support bracket, characterized in that, It includes a footrest bracket and a connecting seat, wherein the footrest bracket is connected to the wheelchair body via the connecting seat; The wheelchair body is provided with a plug-in hole, and the connecting seat is connected to the wheelchair body by plugging into the plug-in hole through a connecting shaft; A limiting member is slidably provided on the connecting seat, and the wheelchair body is provided with a limiting part that cooperates with the limiting member; The limiting member includes a locking position and an unlocking position; when the limiting member is in the locking position, the limiting member is locked to the limiting part, the limiting member prevents the connecting shaft from disengaging from the insertion hole, and the foot support bracket is in a fixed state. Push the limiting member to slide laterally away from the limiting part. The limiting member releases the axial limitation on the connecting shaft, and the connecting shaft can move out along the insertion hole or rotate to adjust the angle of the foot support bracket.

2. The detachable wheelchair leg support bracket according to claim 1, characterized in that: The connecting shaft is fixed to the connecting seat by screws.

3. The detachable wheelchair leg support bracket according to claim 1, characterized in that: The limiting part is a limiting boss provided on the wheelchair body. When the limiting part is in the locked position, the lower end of the limiting part abuts against the bottom of the limiting boss.

4. The detachable wheelchair leg support bracket according to claim 3, characterized in that: The limiting member includes an operating part and a locking part. The operating part is disposed on the top of the connecting seat, and the locking part is located below the connecting seat. When the limiting member is in the locked position, the locking part contacts the limiting part, and the limiting member restricts the connecting shaft from disengaging from the insertion hole, and the foot support bracket is in a fixed state; when the operating part is pushed, the locking part disengages from the limiting part, and the limiting member releases the axial restriction on the connecting shaft, so that the connecting shaft can move out along the insertion hole or rotate to adjust the angle of the foot support bracket.

5. The detachable wheelchair leg support bracket according to claim 4, characterized in that: The locking part is a limiting hook that bends toward the limiting boss.

6. The detachable wheelchair leg support bracket according to claim 4, characterized in that: The operating unit is an operating block located on top of the connector.

7. The detachable wheelchair leg support bracket according to claim 4, characterized in that: The limiting member is laterally slidably disposed on the connecting seat, and the connecting seat is provided with a reset cavity; The reset cavity is provided with an elastic element, and the two ends of the elastic element abut against the limiting element and the inner wall of the reset cavity, respectively; when the limiting element is in the unlocked position, the elastic element is compressed and stores energy. After the elastic element is released, the limit element is automatically driven to reset to the locked position.

8. The detachable wheelchair leg support bracket according to claim 7, characterized in that: The limiting member also includes a connecting part located inside the reset cavity, and the reset cavity is provided with a guide post for guiding the elastic element; the elastic element is sleeved on the guide post, one end of the elastic element abuts against the connecting part, and the other end of the elastic element abuts against the inner wall of the reset cavity; The guide post includes a fixed end and a free end. The fixed end is connected to the connecting part. When the limiting member is pushed to the unlocked position, the free end of the guide post abuts against the inner wall of the reset cavity.

9. The detachable wheelchair leg support bracket according to claim 1, characterized in that: The insertion hole is arranged vertically, the connecting shaft is vertically inserted into the insertion hole, and the limiting member is slidably arranged on the connecting seat in the front-to-back horizontal direction.

10. A wheelchair, characterized in that, include: The wheelchair leg support bracket according to any one of claims 1-9.

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