An electric wheelchair folding leg rest assembly

Abstract

This utility model discloses a folding leg rest assembly for an electric wheelchair, including a connecting frame and a leg rest body. The lower end of the connecting frame has a connecting end and a limiting end arranged vertically. The connecting end has a through-hole. The rear side of the leg rest body has a connecting notch that matches the connecting end. The end face of the connecting notch has a fixing hole that faces the insertion hole and is screwed into the fixing screw. When the leg rest body rotates to a horizontal position, the limiting end abuts against the side of the connecting notch. This utility model is installed at the front of the wheelchair via the connecting frame. The connecting end located at the lower end of the connecting frame mates with the connecting notch of the leg rest body. The fixing screw installed in the connecting end can be screwed into the fixing hole of the leg rest body to fix the rod, so that the leg rest body is stably installed and can rotate around the connecting end to unfold or fold. When it rotates to a horizontal position, it abuts against the limiting end to ensure the stability of unfolding. This assembly structure has high stability, simple and reasonable connection, and helps to reduce the number of connection structures.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, specifically to an electric wheelchair folding leg rest assembly. Background Technology

[0002] In the field of modern medical assistive devices, electric wheelchairs, as important mobility aids, are widely used for daily travel and rehabilitation care for people with mobility impairments. The leg rest, as a key component of an electric wheelchair, directly affects the user's comfort, safety, and the wheelchair's portability. Existing electric wheelchair leg rest assemblies have the following significant shortcomings in terms of assembly stability, ease of adjustment, and structural simplification:

[0003] Current electric wheelchair leg supports mostly employ a multi-component connection method, such as using multiple hinges, bolt groups, or snap-fit ​​structures to connect the leg support body to the wheelchair body. This design not only increases the number of parts, leading to a cumbersome assembly process, but also requires high installation precision, making it prone to loosening due to accumulated component tolerances. Existing structures lack a reliable anti-locking mechanism, relying solely on a single hinge point or screw for fixation, causing the leg support to easily wobble or shift angles when bearing the user's leg pressure. For example, when the leg support rotates to the horizontal support position, current designs typically only achieve positioning through bolt tightening. With prolonged use or exposure to vibration, the bolts may loosen, affecting the stability of the leg support and even posing a safety hazard to the user. Furthermore, leg supports in the folded state may also accidentally unfold during wheelchair movement due to the lack of an effective locking mechanism, taking up space and increasing the risk of collisions. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an electric wheelchair folding leg support assembly, which improves the convenience of use and has high stability by optimizing the folding connection structure.

[0005] The technical solution adopted by this utility model is: an electric wheelchair folding leg support assembly, including a connecting frame and a leg support body. The lower end of the connecting frame is provided with a connecting end and a limiting end arranged vertically. The connecting end is provided with a through insertion hole, and a fixing screw is provided in the insertion hole. The rear end of the leg support body is provided with a connecting notch that matches the connecting end. The end face of the connecting notch is provided with a fixing hole that is directly opposite to the insertion hole and screwed into the fixing screw. When the leg support body is rotated to a horizontal position, the limiting end abuts against the side of the connecting notch.

[0006] In this technical solution, the leg support body can be installed at the front of the wheelchair via a connecting frame. The connecting frame is hinged to the installation position at the front of the wheelchair via a connecting end. By flipping and folding up and down, the connecting end located at the lower end of the connecting frame mates with the connecting notch of the leg support body. The fixing screw installed in the connecting end can be screwed into the fixing hole of the leg support body to fix the rod, so that the leg support body can be stably installed and can also rotate around the connecting end to unfold or fold. When it is rotated to the horizontal position, it can abut against the limiting end to ensure the stability of unfolding. This technical solution has a high assembly structure stability, simple and reasonable connection, and is conducive to reducing the connection structure.

[0007] Preferably, the edge of the insertion hole opposite to the leg support body is provided with a stepped groove.

[0008] Preferably, the upper surface of the leg support body is provided with anti-slip grooves arranged at intervals.

[0009] Preferably, the leg support body has a connecting and fixing part arranged axially along the fixing screw at one end with a connecting notch, and the fixing hole is located on the end face of the connecting and fixing part.

[0010] Preferably, the upper end of the connecting frame has a hinge interface that extends through the upper end face and the outer side face, and the two arms on both sides of the hinge interface are provided with hinge holes arranged opposite each other.

[0011] Preferably, a hinge ring is embedded in the hinge hole.

[0012] The beneficial effects of this utility model are as follows: This utility model can be installed at the front of a wheelchair via a connecting frame. The connecting frame is hinged to the installation position at the front of the wheelchair via a connecting end. By flipping and folding up and down, the connecting end located at the lower end of the connecting frame mates with the connecting notch of the leg support body. The fixing screw installed in the connecting end can be screwed to the fixing hole of the leg support body to fix the rod, so that the leg support body can be stably installed and can also rotate around the connecting end to unfold or fold. When it is rotated to the horizontal position, it can abut against the limiting end to ensure the stability of unfolding. Such an assembly structure has high stability, simple and reasonable connection, which helps to reduce the connection structure and has high practical value. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0014] Figure 1 This is a perspective view of the electric wheelchair folding leg support assembly provided in the embodiments of this utility model.

[0015] Figure 2This is a perspective view of the connecting frame of the electric wheelchair folding leg support assembly provided in the embodiments of this utility model.

[0016] Figure 3 This is a perspective view of the leg support body of the electric wheelchair folding leg support assembly provided in this embodiment of the utility model.

[0017] Reference numerals in the attached drawings: connecting frame 100, connecting end 110, insertion hole 111, stepped groove 112, limiting end 120, hinge interface 130, hinge ring sleeve 131, leg support body 200, connecting notch 210, fixing hole 220, anti-slip groove 230, connecting fixing part 240. Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0020] like Figures 1 to 3 As shown in the figure, a specific embodiment of this utility model provides an electric wheelchair folding leg rest assembly, including a connecting frame 100 and a leg rest body 200. The lower end of the connecting frame 100 is provided with a connecting end 110 and a limiting end 120 arranged vertically. The connecting end 110 is provided with a through insertion hole 111, and a fixing screw is provided in the insertion hole 111. The rear end of the leg rest body 200 is provided with a connecting notch 210 that matches the connecting end 110. The end face of the connecting notch 210 is provided with a fixing hole 220 that is directly opposite to the insertion hole 111 and screwed into the fixing screw. When the leg rest body 200 is rotated to a horizontal position, the limiting end 120 abuts against the side of the connecting notch 210.

[0021] like Figures 1 to 3 As shown, with the above configuration, in this embodiment, the leg support body 200 can be installed at the front end of the wheelchair via the connecting frame 100. The connecting frame 100 is hinged to the installation position at the front end of the wheelchair via the connecting end 110. By flipping and folding up and down, the connecting end 110 at the lower end of the connecting frame 100 mates with the connecting notch 210 of the leg support body 200. The fixing screw installed in the connecting end 110 can be screwed to the fixing hole 220 of the leg support body 200 to fix the rod, so that the leg support body 200 can be stably installed and can also rotate around the connecting end 110 to unfold or fold. When it is rotated to the horizontal position, it can abut against the limiting end 120 to ensure the stability of unfolding. The assembly structure of this technical solution has high stability and the connection is simple and reasonable, which is conducive to reducing the connection structure.

[0022] like Figures 1 to 3 As shown, in this embodiment, a stepped groove 112 is provided on the edge of the hole 111 away from the leg support body 200. In this way, the head of the fixing screw can be completely sunk into the stepped groove 112, avoiding the screw being exposed and damaged.

[0023] like Figure 3 As shown, the upper surface of the leg support body 200, which supports the human foot, is provided with anti-slip grooves 230 arranged at intervals to improve the safety of using the leg support body 200. In order to strengthen the structural strength of the connection position between the leg support body 200 and the connecting frame 100, this embodiment provides a connecting fixing part 240 arranged along the axial direction of the fixing screw at one end of the leg support body 200 where the connecting notch 210 is provided. The fixing hole 220 is located on the end face of the connecting fixing part 240. In this way, the connecting fixing part 240 has an axial structure, which can strengthen the structural strength of the connection position and improve the connection stability.

[0024] like Figure 1 and Figure 2 As shown above, in this embodiment, the connecting frame 100 is connected to the front end of the wheelchair via its upper end. In this embodiment, a hinge interface 130 extends through the upper surface and outer side of the connecting frame 100. The hinge interface 130 has opposing hinge holes on both sides. A hinge ring 131 is embedded within the hinge hole. Thus, the hinge interface 130 can be hinged to the wheelchair frame via the connection point. After the hinge assembly, a hinge shaft structure can be installed in the hinge hole, allowing the connecting frame 100 to fold around its end. The hinge ring 131 within the hinge hole improves the stability of the hinge shaft structure installation and prevents damage caused by wear at the hinge position.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A folding leg rest assembly for an electric wheelchair, characterized in that; Includes a connecting frame (100) and a leg support body (200), The lower end of the connecting frame (100) is provided with a connecting end (110) and a limiting end (120) arranged vertically. The connecting end (110) is provided with a through insertion hole (111) and a fixing screw is provided in the insertion hole (111). The leg support body (200) has a connection notch (210) on one side of its rear end that matches the connection end (110). The end face of the connection notch (210) has a fixing hole (220) that is directly opposite to the insertion hole (111) and screwed into the fixing screw. When the leg support body (200) is rotated to the horizontal position, the limiting end (120) abuts against the side of the connection notch (210).

2. The electric wheelchair folding leg rest assembly according to claim 1, characterized in that, The insertion hole (111) has a stepped groove (112) on the edge of the hole away from the leg support body (200).

3. The electric wheelchair folding leg rest assembly according to claim 1, characterized in that, The upper surface of the leg support body (200) is provided with anti-slip grooves (230) arranged at intervals.

4. The electric wheelchair folding leg rest assembly according to claim 1, characterized in that, The leg support body (200) has a connecting notch (210) at one end, and a connecting fixing part (240) is arranged along the axial direction of the fixing screw. The fixing hole (220) is located on the end face of the connecting fixing part (240).

5. The electric wheelchair folding leg rest assembly according to claim 1, characterized in that, The upper end of the connecting frame (100) has a hinge interface (130) that extends through the upper end face and the outer side face. The hinge interface (130) has hinge holes arranged opposite each other on both sides of the arm.

6. The electric wheelchair folding leg rest assembly according to claim 5, characterized in that, A hinge ring (131) is embedded in the hinge hole.

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