Pedal mounting structure of wheelchair

Abstract

The utility model belongs to the technical field of wheelchairs, and particularly relates to a pedal mounting structure of a wheelchair, which comprises a side frame, a mounting frame is arranged on the side frame, the mounting frame extends towards the front of the side frame, a pedal for supporting feet of a user is rotatably arranged on the mounting frame, and a hinge bulge is arranged at the front part of the side frame. Hinging grooves matched with the hinging protrusions are formed in the mounting frames, hinging rods extending in the horizontal direction are arranged on the hinging protrusions, the hinging protrusions and the hinging grooves are connected through the hinging rods, so that the mounting frames can be turned over towards the side frames from the upper portion, the side frames and the mounting frames are oppositely folded, and supporting walls are arranged on the mounting frames; under the action of gravity, the mounting frame turns over towards the lower side of the front of the side frame, the supporting wall abuts against the side frame and enables the mounting frame to be stably unfolded towards the front of the side frame, and the pedal mounting structure of the wheelchair is convenient for a user to use.

Description

Technical Field

[0001] This utility model belongs to the field of wheelchair technology, and specifically relates to a footrest mounting structure for a wheelchair. Background Technology

[0002] A wheelchair is a chair equipped with wheels that can help replace walking. It is an important means of mobility for the wounded, the sick, home rehabilitation, transportation, medical treatment, and outdoor activities.

[0003] Most wheelchairs on the market are foldable, and the front of the wheelchair has footrests to support the user's feet. Furthermore, for easy storage and folding, the footrests are usually foldable, as illustrated by Chinese utility model patent CN 202322445931.X. A disclosed folding wheelchair includes a right support assembly and a left support assembly, which are hinged together by a cross member. The folding wheelchair further includes: a footrest assembly comprising footrest rods respectively mounted on the front ends of the right and left support assemblies, the footrest rods being separately disposed from the right and left support assemblies, and a pedal mounted on the lower end of each footrest rod via a pivot; and a push handle assembly respectively mounted on the upper rear ends of the right and left support assemblies, the push handle assembly comprising a push handle rod foldably mounted on the right and left support assemblies. This folding wheelchair can be arranged in multiple layers or placed in storage after folding. The footrest assembly is stored separately in a cabinet, which better utilizes space. The push handle rod does not affect the storage space, thus compressing the storage space in the container, improving space utilization, and reducing shipping costs.

[0004] The foot pedal assembly in the above structure includes a footrest and a pedal that are rotatably connected. However, the footrest cannot be folded relative to the right or left support assembly. In order to facilitate the storage of the wheelchair, the user needs to disassemble the foot pedal assembly, which makes it inconvenient for the wheelchair to be quickly unfolded and used. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a footrest mounting structure for a wheelchair that is convenient for users.

[0006] The purpose of this utility model is achieved as follows:

[0007] A footrest mounting structure for a wheelchair includes a side frame with a mounting bracket extending forward. The mounting bracket has a rotatable footrest for supporting the user's feet. A hinge protrusion is located at the front of the side frame. A hinge groove adapted to the hinge protrusion is provided on the mounting bracket. A horizontally extending hinge rod connects the hinge protrusion and the hinge groove, allowing the mounting bracket to flip from above onto the side frame. This causes the side frame and mounting bracket to fold relative to each other. A support wall is provided on the mounting bracket. Under gravity, the mounting bracket flips forward and downward onto the side frame, with the support wall abutting against the side frame and causing the mounting bracket to unfold stably forward.

[0008] The present invention is further configured such that: both sides of the hinge groove are provided with side walls connected to the hinge rod, and the support wall is provided at the bottom of the hinge groove; the control side frame and the mounting frame are unfolded relative to each other, and under the action of gravity, the support wall is pressed against the bottom of the hinge protrusion.

[0009] The present invention is further configured such that: the hinge protrusion includes a protrusion integrally formed with the side frame, a protective sleeve is fitted on the protrusion, the hinge rod is connected to the protrusion, and the hinge rod passes through the protective sleeve and is connected to the side wall of the hinge groove.

[0010] The present invention is further configured such that: support protrusions are provided on both sides of the protective sleeve, and the hinge rod passes through the support protrusions and is connected to the side wall of the hinge groove.

[0011] The present invention is further configured such that: the mounting frame is provided with a hinge portion extending forward of the side frame; the pedal includes a plate body, a hinge seat is provided on the plate body, and a hinge hole adapted to the hinge portion is on the hinge seat; the plate body extends to one side of the hinge portion, and the mounting frame extends downward of the hinge portion to form a limiting block; the plate body extends to one side of the limiting block, and the plate body can abut against the limiting block, thereby keeping the pedal and the mounting frame in an unfolded state; controlling the relative rotation of the pedal and the mounting frame can cause the plate body to flip and move closer to the mounting frame, and controlling the relative rotation of the mounting frame and the side frame can cause the plate body to fold to one side of the side frame.

[0012] The present invention is further configured such that: the hinge hole is a through hole, a first limiting wall is provided at one end of the hinge part, an end cap is detachably provided at the other end of the hinge part, a second limiting wall is provided on the end cap, the first limiting wall and the second limiting wall are respectively provided on both sides of the hinge hole, and the distance between the first limiting wall and the second limiting wall is greater than the length of the hinge hole.

[0013] The advantages of this utility model compared to the prior art are:

[0014] 1. In this utility model, the pedal can be folded relative to the mounting frame, and the mounting frame can be folded relative to the side frame. During storage and transportation, the mounting frame and pedal can be folded towards the side frame, thereby fully folding the wheelchair, which facilitates the storage and transportation of the wheelchair. In addition, this structure allows users to quickly unfold the pedal, making it convenient for users to use. The setting of the support wall facilitates the stable unfolding of the mounting frame and side frame during use, avoiding accidental folding of the mounting frame and side frame during use, and making it convenient for users to use.

[0015] 2. The side walls on both sides of the hinge groove in this utility model are conducive to the stable installation of the hinge rod and the side frame, while the support wall at the bottom of the hinge groove can reduce the entry of debris between the support wall and the hinge protrusion, making it convenient for the installation frame and the side frame to be stably unfolded and for the user to use.

[0016] 3. The protrusion and protective sleeve in this utility model improve the structural strength of the connection between the hinge protrusion and the hinge groove, prevent damage to the hinge protrusion during use, and facilitate user maintenance and replacement. They also reduce friction between the mounting bracket and the side frame, preventing the pedal from shaking due to severe wear of the mounting protrusion after prolonged use, thus extending the service life of the pedal. The support protrusion reduces the contact area between the protective sleeve and the side wall of the hinge groove, which helps reduce friction between the protective sleeve and the hinge groove, further extending the service life of the pedal.

[0017] 4. The hinge seat in this utility model facilitates the relative rotation of the mounting frame and the pedal. Furthermore, because the plate extends towards the hinge, it facilitates the folding and closing of the plate and the mounting frame, preventing the plate from protruding downwards from the mounting frame and avoiding interference with other objects during the pedal's unfolding or folding process. The limiting block facilitates the stable unfolding of the pedal and the mounting frame, making it convenient for the user. The end cap facilitates the stable installation of the pedal. Moreover, because the distance between the first and second limiting walls is greater than the length of the hinge hole, it prevents the first and second limiting walls from abutting against the pedal during installation, thus avoiding interference with the pedal's free rotation and facilitating the unfolding and folding of the pedal. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the foot pedal of this utility model when it is folded.

[0020] Figure 3 This is a sectional view of the mounting bracket and pedal mounting structure in this utility model;

[0021] Figure 4 This is an exploded view of the connection structure between the side frame, mounting bracket, and pedal in this utility model;

[0022] Figure 5This is a schematic diagram of the structure of the protective sleeve in this utility model;

[0023] Figure 6 This is a schematic diagram of the mounting bracket in this utility model;

[0024] Figure 7 This is a schematic diagram of the pedal structure in this utility model;

[0025] Figure 8 This is a structural schematic diagram of the mid-end cap of this utility model.

[0026] The labels in the diagram mean: 1-side frame; 11-hinged protrusion; 111-protrusion; 112-protective cover; 113-slot;

[0027] 114-Support protrusion; 2-Mounting bracket; 21-Hinge; 22-Limiting block; 23-Hinge groove; 24-Support wall;

[0028] 25-Third limiting wall; 26-First limiting wall; 3-Pedal; 31-Plate; 32-Hinge seat; 33-Hinge hole;

[0029] 34-Abutting part; 4-End cap; 41-Second limiting wall; 42-Insertion part. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0031] See Figures 1 to 8 As shown, a footrest mounting structure for a wheelchair includes a side frame 1, a mounting frame 2 on the side frame 1, the mounting frame 2 extending forward of the side frame 1, and a footrest 3 rotatably mounted on the mounting frame 2 for supporting the user's feet. A hinge protrusion 11 is provided at the front of the side frame 1, and a hinge groove 23 adapted to the hinge protrusion 11 is provided on the mounting frame 2. A horizontally extending hinge rod is provided on the hinge protrusion 11, connecting the hinge protrusion 11 and the hinge groove 23, allowing the mounting frame 2 to be flipped from above towards the side frame 1, thereby folding the side frame 1 and the mounting frame 2 relative to each other. A support wall 24 is provided on the mounting frame 2. Under the action of gravity... The mounting frame 2 flips down and forward of the side frame 1, and the support wall 24 abuts against the side frame 1, causing the mounting frame 2 to unfold stably forward of the side frame 1. In this structure, the pedal 3 can be folded relative to the mounting frame 2, and the mounting frame 2 can be folded relative to the side frame 1. During storage and transportation, the mounting frame 2 and the pedal 3 can be folded towards the side frame 1, thereby fully folding the wheelchair, which facilitates the storage and transportation of the wheelchair. This structure also allows the user to quickly unfold the pedals, making it convenient for the user. The support wall 24 facilitates the stable unfolding of the mounting frame 2 and the side frame 1 during use, preventing the mounting frame 2 and the side frame 1 from folding accidentally during use, thus making it convenient for the user.

[0032] In this embodiment, the wheelchair is provided with side frames 1 on both sides, and a folding unit is provided between the side frames 1. The side frames 1 are provided with front wheels and rear wheels for mounting brackets 2.

[0033] In this invention, both sides of the hinge groove 23 are provided with side walls that connect to the hinge rod, and the support wall 24 is provided at the bottom of the hinge groove 23. When the control side frame 1 and the mounting frame 2 unfold relative to each other, under the action of gravity, the support wall 24 abuts against the bottom of the hinge protrusion 11. The side walls provided on both sides of the hinge groove 23 are conducive to the stable installation of the hinge rod and the side frame 1, while the support wall 24 provided at the bottom of the hinge groove 23 can reduce the entry of debris between the support wall 24 and the hinge protrusion 11, facilitate the stable unfolding of the mounting frame 2 and the side frame 1, and make it convenient for the user.

[0034] In this embodiment, the hinge 23 is provided with an inclined third limiting wall 25 at the end away from the hinge protrusion 11. When the mounting frame 2 is flipped and folded towards the side frame 1, the third limiting wall 25 abuts against the hinge protrusion 11, thereby preventing the pedal 3 from bumping into other parts of the wheelchair.

[0035] The hinge protrusion 11 includes a protrusion 111 integrally formed with the side frame 1. A protective sleeve 112 is fitted on the protrusion 111. The hinge rod is connected to the protrusion 111 and passes through the protective sleeve 112 and is connected to the side wall of the hinge groove 23. The protrusion 111 and the protective sleeve 112 are designed to improve the structural strength of the connection position between the hinge protrusion 11 and the hinge groove 23, and to prevent damage to the hinge protrusion 11 during use. The protective sleeve 112 is also designed to facilitate user maintenance and replacement, reduce friction between the mounting bracket 2 and the side frame 1, and prevent the mounting protrusion from wearing out after long-term use, which could cause the pedal 3 to wobble. This helps to extend the service life of the pedal.

[0036] In this embodiment, the protective sleeve 112 is provided with a slot 113 that matches the protrusion 111. Support protrusions 114 are provided on both sides of the protective sleeve 112. The hinge rod passes through the support protrusions 114 and connects to the side wall of the hinge groove 23. The provision of the support protrusions 114 can reduce the contact area between the protective sleeve 112 and the side wall of the hinge groove 23, which is beneficial to reduce the friction between the protective sleeve 112 and the hinge groove 23 and extend the service life of the foot pedal.

[0037] The mounting frame 2 is provided with a hinge portion 21 extending forward towards the side frame 1. The pedal 3 includes a plate 31, on which a hinge seat 32 is provided. The hinge seat 32 has a hinge hole 33 that matches the hinge portion 21. The plate 31 extends towards the hinge portion 21. The hinge seat 32 facilitates the relative rotation of the mounting frame 2 and the pedal 3. Controlling the relative rotation of the pedal 3 and the mounting frame 2 allows the plate 31 to flip and move closer to the mounting frame 2. Controlling the relative rotation of the mounting frame 2 and the side frame 1 allows the plate 31 to fold to one side of the side frame 1. Since the plate 31 extends towards the hinge portion 21, it is convenient for the plate 31 to fold and move closer to the mounting frame 2, avoiding the plate 31 from protruding downwards from the mounting frame 2, and preventing interference with other objects during the unfolding or folding of the pedal 3, thus facilitating the unfolding or folding of the pedal 3.

[0038] The mounting bracket 2 extends downward toward the hinge portion 21 to form a limiting block 22. The plate body 31 extends to one side of the limiting block 22. The plate body 31 can abut against the limiting block 22 so that the pedal 3 and the mounting bracket 2 are kept in an unfolded state. The setting of the limiting block 22 facilitates the stable unfolding of the pedal 3 and the mounting bracket 2 and makes it convenient for the user to use. In this embodiment, abutment portion 34 adapted to the limiting block 22 is provided on one side of the plate body 31.

[0039] The hinge hole 33 described in this utility model is a through hole. One end of the hinge part 21 is provided with a first limiting wall 26, and the other end of the hinge part 21 is detachably provided with an end cap 4. A second limiting wall 31 is provided on the end cap 4. The first limiting wall 26 and the second limiting wall 31 are respectively provided on both sides of the hinge hole 33. The distance between the first limiting wall 26 and the second limiting wall 31 is greater than the length of the hinge hole 33. This structure avoids the first limiting wall 26 and the second limiting wall 31 pressing against the pedal 3 during the installation process, affecting the free rotation of the pedal 3, and facilitating the unfolding and folding of the pedal 3.

[0040] In this embodiment, the first limiting wall 26 extends to one side of the limiting block 22. This structure is beneficial to increasing the contact area between the pedal 3 and the first limiting wall 26, which is beneficial to the stable installation of the pedal 3. In addition, the end cap 4 is provided with a plug-in part 42 that is adapted to the hinge hole 33. The provision of the plug-in part 42 facilitates the quick positioning and installation of the end cap 4.

[0041] Preferably, the end of the plug portion 42 abuts against the hinge portion 21. The plug portion 42 is designed to allow users to use end caps 4 of different lengths of plug portion 42 according to the length of the hinge hole 33, which facilitates the flexible assembly and production of the pedal 3.

[0042] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A footrest mounting structure of a wheelchair, comprising a side frame (1), a mounting bracket (2) is arranged on the side frame (1), the mounting bracket (2) extends forwardly to the side frame (1), a pedal (3) for supporting a user's foot is rotatably arranged on the mounting bracket (2), characterized in that: The side frame (1) is provided with a hinge protrusion (11) in front, the mounting frame (2) is provided with a hinge groove (23) matched with the hinge protrusion (11), the hinge protrusion (11) is provided with a hinge rod extending horizontally, the hinge rod connects the hinge protrusion (11) and the hinge groove (23) to make the mounting frame (2) be able to be flipped from the top to the side frame (1), so that the side frame (1) and the mounting frame (2) are folded relative to each other, and the mounting frame (2) is provided with a supporting wall (24); under the action of gravity, the mounting frame (2) is flipped downward to the front of the side frame (1), the supporting wall (24) is abutted against the side frame (1) and makes the mounting frame (2) be stably unfolded to the front of the side frame (1).

2. The footrest mounting structure for a wheelchair according to claim 1, characterized in that: The hinge groove (23) is provided with side walls connected with the hinge rod on both sides, and the supporting wall (24) is arranged at the bottom of the hinge groove (23); the side frame (1) and the mounting frame (2) are controlled to be unfolded relative to each other, and under the action of gravity, the supporting wall (24) is abutted against the bottom of the hinge protrusion (11).

3. The footrest mounting structure for a wheelchair according to claim 2, characterized in that: The hinge groove (23) is provided with an inclined third limiting wall (25) at one end away from the hinge protrusion (11), and when the mounting frame (2) is flipped and folded to the side frame (1), the third limiting wall (25) is abutted against the hinge protrusion (11).

4. The footrest mounting structure for a wheelchair according to claim 1, characterized in that: The hinge protrusion (11) comprises a protrusion part (111) arranged in an integrated mode with the side frame (1), a protective sleeve (112) is sleeved on the protrusion part (111), the hinge rod is connected with the protrusion part (111), and the hinge rod passes through the protective sleeve (112) and is connected with the side wall of the hinge groove (23).

5. The footrest mounting structure for a wheelchair according to claim 4, characterized in that: The protective sleeve (112) is provided with supporting protrusions (114) on both sides, respectively, the hinge rod passes through the supporting protrusions (114) and is connected with the side wall of the hinge groove (23).

6. The footrest mounting structure for a wheelchair according to claim 1, characterized in that: The mounting frame (2) is provided with a hinge part (21) extending to the front of the side frame (1), the pedal (3) comprises a plate body (31), the plate body (31) is provided with a hinge seat (32), the hinge seat (32) is provided with a hinge hole (33) matched with the hinge part (21), the plate body (31) extends to one side of the hinge part (21), the mounting frame (2) extends downward to form a limiting block (22) below the hinge part (21), the plate body (31) extends to one side of the limiting block (22), and the plate body (31) can be abutted against the limiting block (22), so that the pedal (3) and the mounting frame (2) are kept in an unfolded state; the pedal (3) and the mounting frame (2) are controlled to rotate relative to each other, so that the plate body (31) is flipped and closed to the mounting frame (2), and the mounting frame (2) and the side frame (1) are controlled to rotate relative to each other, so that the plate body (31) is folded to one side of the side frame (1).

7. The footrest mounting structure for a wheelchair according to claim 6, characterized in that: The hinge hole (33) is a through hole, one end of the hinge part (21) is provided with a first limiting wall (26), the other end of the hinge part (21) is detachably provided with an end cap (4), the end cap (4) is provided with a second limiting wall (41), and the first limiting wall (26) and the second limiting wall (41) are arranged on both sides of the hinge hole (33), respectively. The distance between the first limiting wall (26) and the second limiting wall (41) is greater than the length of the hinge hole (33).

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