Wheelchair pedal and wheelchair

Abstract

The utility model discloses a wheelchair pedal and a wheelchair. The wheelchair pedal comprises a fixing base, a pedal supporting rod, a pedal plate, a first connecting assembly, a second connecting assembly and a third connecting assembly, the fixing base is provided with a first assembling groove and a second assembling groove which are formed back to back, the wheelchair frame can be locally embedded in the first assembling groove, and the first connecting assembly is used for fixedly connecting the fixing base and the wheelchair frame; the first end of the pedal supporting rod is arranged in the second assembling groove, the first end of the pedal supporting rod is connected with the fixing base through a second connecting assembly, and the second connecting assembly, the pedal supporting rod and the fixing base are configured in the mode that the pedal supporting rod can only rotate around the first axis relative to the fixing base or the pedal supporting rod is fixed to the fixing base. The pedal plate is connected with the second end of the pedal supporting rod through a third connecting assembly, and the third connecting assembly, the pedal plate and the pedal supporting rod are configured to enable the pedal plate to rotate around the first axis and / or the second axis relative to the pedal supporting rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wheelchair, especially relates to a wheelchair footrest and wheelchair, belongs to rehabilitation apparatus technical field. BACKGROUND

[0002] As a device for providing movement assistance for people with difficulty in moving, a wheelchair generally comprises a wheelchair body and a footrest. The wheelchair body is generally composed of a wheelchair frame, a seat, a backrest, wheels, armrests, a brake device and the like assembled on the wheelchair frame. The footrest, as an important part of the wheelchair, its rationality in structure and function is crucial to the comfort and convenience of the user. The structure of the wheelchair footrest on the market is relatively single, mostly adopting a fixed connection mode, which cannot be adjusted according to the different needs of the user. For example, some wheelchair footrests cannot realize angle adjustment, so that the user cannot obtain the best use experience in different use scenarios (such as rest, activity, etc.). At the same time, the existing wheelchair footrests also have certain deficiencies in connection stability and reliability with the wheelchair frame, which may affect the overall use performance of the wheelchair. SUMMARY

[0003] The main purpose of the utility model is to provide a wheelchair footrest and wheelchair, so as to overcome the deficiencies in the prior art.

[0004] In order to achieve the above-mentioned utility model purposes, the technical scheme adopted by the utility model comprises:

[0005] The first aspect of the utility model embodiment provides a wheelchair footrest, which comprises a fixed seat, a footrest support rod, a footrest plate, a first connecting assembly, a second connecting assembly and a third connecting assembly,

[0006] The fixed seat has a first assembly groove and a second assembly groove arranged back to back, the first assembly groove can be embedded with part of the wheelchair frame, the first connecting assembly is used for fixedly connecting the fixed seat and the wheelchair frame, the first end of the footrest support rod is arranged in the second assembly groove, the first end of the footrest support rod is connected with the fixed seat through the second connecting assembly, the second connecting assembly, the footrest support rod and the fixed seat are configured to enable the footrest support rod to rotate only around a first axis relative to the fixed seat or the footrest support rod to be fixed with the fixed seat, the footrest plate is connected with the second end of the footrest support rod through the third connecting assembly, the third connecting assembly, the footrest plate and the footrest support rod are configured to enable the footrest plate to rotate around a first axis and / or a second axis relative to the footrest support rod, and the first axis is perpendicular to the second axis.

[0007] A second aspect of this utility model provides a wheelchair, the wheelchair including the wheelchair footrests, and the fixing seat being fixedly connected to the wheelchair frame.

[0008] Compared with the prior art, the advantages of this utility model include: the wheelchair footrest provided by the embodiment of this utility model realizes the adjustment and change of the footrest state by configuring a fixed seat and connecting components, without adding additional accessories and structures, nor reconfiguring the structure of the footrest and wheelchair frame. Different functions of the footrest can be adjusted on the same wheelchair, that is, the functions of orthopedic footrest, flip-up footrest and fixed footrest can be switched, thereby reducing the cost of adapting the wheelchair footrest to different needs. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the overall structure of a wheelchair provided in a typical embodiment of this utility model;

[0011] Figure 2 This is a schematic diagram of the assembly structure of a non-adjustable wheelchair footrest and wheelchair frame provided in a typical embodiment of this utility model;

[0012] Figure 3 This is a schematic diagram of the structure of a wheelchair foot pedal in a typical embodiment of this utility model, in which a foot pedal support rod and a fixed base are fixedly assembled.

[0013] Figure 4 This is a structural schematic diagram of a fixing seat provided in a typical embodiment of this utility model;

[0014] Figure 5 This is a schematic diagram of another rotatable and adjustable wheelchair footrest and wheelchair frame assembly provided in a typical embodiment of this utility model. Detailed Implementation

[0015] In view of the shortcomings of the prior art, the inventor of this case, through long-term research and extensive practice, has come up with the technical solution of this utility model. The following will further explain the technical solution, its implementation process, and its principles.

[0016] The utility model discloses a first aspect of embodiment provides a kind of wheelchair footboard, it includes: fixed seat, footboard support rod, footboard, first connecting component, second connecting component and third connecting component,

[0017] The fixed seat has first assembly slot and second assembly slot arranged back to back, the first assembly slot can be embedded in part of the wheelchair frame, the first connecting component is used to fixedly connect the fixed seat and the wheelchair frame, the first end of the footboard support rod is arranged in the second assembly slot, the first end of the footboard support rod is connected with the fixed seat through the second connecting component, the second connecting component, the footboard support rod and the fixed seat are configured to only be able to rotate around the first axis relative to the fixed seat or the footboard support rod and the fixed seat are fixed, the footboard is connected with the second end of the footboard support rod through the third connecting component, the third connecting component, the footboard and the footboard support rod are configured to enable the footboard to rotate around the first axis and / or the second axis relative to the footboard support rod, and the first axis is perpendicular to the second axis.

[0018] Further, the fixed seat includes a base and first, second, third and fourth assembly plates, the base has first and second faces arranged back to back,

[0019] The first and second assembly plates are fixedly arranged on the first face of the base and enclose the first assembly slot with the first face, the third and fourth assembly plates are fixedly arranged on the second face of the base and enclose the second assembly slot with the second face,

[0020] The third and fourth assembly plates are provided with at least one third assembly hole and at least one fourth assembly hole, in the longitudinal direction of the second assembly slot, the third and fourth assembly holes are located at different height levels, all the third assembly holes are located at the same height level, and all the fourth assembly holes are located at the same height level, the third assembly holes on the third and fourth assembly plates are configured as at least one third assembly hole group, and each third assembly hole group includes two coaxially arranged third assembly holes, and the fourth assembly holes on the third and fourth assembly plates are configured as at least one fourth assembly hole group, and each fourth assembly hole group includes two coaxially arranged fourth assembly holes.

[0021] The first end of the pedal support rod has a first end face and a through hole adjacent to the first end face and extending along a radial direction of the first end face, each of the second connecting assemblies is arranged in the through hole and a third assembly hole group or a fourth assembly hole group, and when the second connecting assemblies are arranged in the third assembly hole group, a first height difference between the first end of the pedal support rod and a bottom of the second assembly groove is smaller than a vertical distance between the through hole and the first end face, the pedal support rod and the fixed seat are connected through the second connecting assemblies and are limited to keep a fixed posture; when the second connecting assemblies are arranged in the fourth assembly hole group, a second height difference between the first end of the pedal support rod and the bottom of the second assembly groove is greater than or equal to the vertical distance between the through hole and the first end face, the pedal support rod and the fixed seat are connected through the second connecting assemblies and the pedal support rod can rotate around the second connecting assemblies.

[0022] Further, the bottom of the second assembly groove is further provided with a relief groove, a width of the relief groove is smaller than a width of the second assembly groove, and a width of the first end of the pedal support rod is smaller than the width of the second assembly groove.

[0023] Further, the first end face of the pedal support rod is a rounded structure, and the relief groove is an arc-shaped groove or a semi-cylindrical groove.

[0024] Further, the first assembly groove and the second assembly groove extend in parallel directions.

[0025] Further, the first assembly plate, the second assembly plate, the third assembly plate and the fourth assembly plate are arranged in parallel.

[0026] Further, the first connecting assemblies and the second connecting assemblies are bolted pairs.

[0027] Further, the third connecting assemblies include an adapter seat, a first adapter shaft and a second adapter shaft, the adapter seat is rotationally connected with the pedal support rod through the first adapter shaft, the second adapter shaft is fixedly connected with the adapter seat, the pedal is rotationally connected with the second adapter shaft, the first axis is parallel to an axis of the first adapter shaft, and the second axis is parallel to an axis of the second adapter shaft.

[0028] In a more specific embodiment, the wheelchair pedal further comprises an angle adjusting assembly,

[0029] The angle adjusting assembly comprises an adjusting piece and a limiting column, the adjusting piece is rotationally connected with the foot support rod, the adjusting piece is provided with a guide hole, the guide hole is an arc-shaped hole extending along the rotation direction of the foot support rod around the first axis, a plurality of limiting protrusions are arranged on the first sidewall of the guide hole along the arc length direction of the guide hole, a clamping groove is formed between adjacent two limiting protrusions and between the outermost limiting protrusion and the hole wall of the guide hole, and a gap between the limiting protrusions and the second sidewall of the guide hole is used for the limiting column to pass through, the first sidewall and the second sidewall are oppositely arranged along the width direction of the guide hole.

[0030] The limiting column is fixed on the fixing seat, part of the limiting column is arranged in the guide hole and can move relative to the adjusting piece along the arc length direction of the guide hole, under the action of gravity of the adjusting piece, the limiting column is arranged in the clamping groove and is fixed relative to the adjusting piece, so that the foot support rod and the fixing seat are fixed at a certain angle, and by moving the adjusting piece and the limiting column relative to each other along the arc length direction of the guide hole, the limiting column can be clamped in different clamping grooves, so that the foot support rod and the fixing seat are at different angles.

[0031] Further, the adjusting piece is an arc-shaped member, and the arc length direction of the adjusting piece is the rotation direction of the foot support rod around the first axis.

[0032] In a more specific embodiment, the wheelchair footrest further comprises a leg support pad arranged on the foot support rod and rotationally matched with the foot support rod.

[0033] The second aspect of the embodiment of the utility model provides a wheelchair, the wheelchair comprises the wheelchair footrest, and the fixing seat is fixedly connected with the wheelchair frame of the wheelchair.

[0034] The technical scheme, the implementation process and the principles will be further explained and described below in combination with the drawings and specific implementation cases. Unless specifically described, the main structure of the wheelchair in the embodiment of the utility model is known in the art, and the structure is not unique. Herein, no limitation is made. The structure of the wheelchair footrest part will be mainly described below.

[0035] Please refer to Figure 1The wheelchair comprises a wheelchair body and two sets of footrests, wherein the wheelchair body comprises a wheelchair frame 100 and a seat, a backrest, wheels, armrests, a brake device and the like which are assembled on the wheelchair frame 100, and the two sets of footrests are fixedly assembled on the wheelchair frame 100. It should be noted that the specific structure of the wheelchair frame 100, the seat, the backrest, the wheels, the armrests and the brake device, and the structure / way, layout and the like of the seat, the backrest, the wheels, the armrests and the brake device assembled on the wheelchair frame 100 can be known in the art, and specifically, the wheelchair frame 100 can be fixed or foldable.

[0036] Please refer to Figure 2 、 Figure 3 and Figure 5 In a more typical embodiment, the footrest comprises a fixed seat 210, a footrest support rod 220, a footrest plate 230, a first connecting assembly 240, a second connecting assembly 250 and a third connecting assembly, the fixed seat 210 is fixedly assembled on the wheelchair frame 100 through the first connecting assembly 240, the footrest support rod 220 is assembled on the fixed seat 210 through the second connecting assembly 250, and the footrest plate 230 is assembled on the footrest support rod 220 through the third connecting assembly, wherein the footrest support rod 220 and the fixed seat 210 can be fixedly matched or rotationally matched, when the footrest support rod 220 and the fixed seat 210 are rotationally matched, the footrest support rod 220 can rotate around a first axis, and the footrest plate 230 can rotate around the first axis or a second axis, so that the footrest as a whole and the footrest plate 230 have multiple adjustable working postures.

[0037] Specifically, please refer to Figure 4 The fixed seat 210 comprises a base and first, second, third and fourth assembly plates, the base has a first face and a second face which are oppositely arranged, the first and second assembly plates are fixedly arranged on the first face of the base and form a first assembly groove 211 together with the first face, the third and fourth assembly plates are fixedly arranged on the second face of the base and form a second assembly groove 212 together with the second face, a frame rod of the wheelchair frame 100 is arranged in the first assembly groove 211 between the first and second assembly plates and is fixed through the first connecting assembly 240, and part of the footrest support rod 220 is arranged in the second assembly groove 212 between the third and fourth assembly plates and is connected to the fixed seat 210 through the second connecting assembly 250.

[0038] More specifically, the first assembly plate, the second assembly plate, the third assembly plate and the fourth assembly plate are arranged in parallel, and the first assembly plate, the second assembly plate, the third assembly plate and the fourth assembly plate can be fixedly combined with the base by a known fixing method such as welding. Of course, the first assembly plate, the second assembly plate, the third assembly plate, the fourth assembly plate and the base can be integrated. For example, the fixing base 210 can be made of a hard material such as metal.

[0039] More specifically, the first connecting assembly 240 is at least two groups of bolt connection pairs, each bolt connection pair including a matched bolt and a nut, the shank of the bolt sequentially penetrating the first assembly plate, the wheelchair frame 100 and the second assembly plate, and being connected with the nut. More specifically, two or more groups of bolt connection pairs are sequentially and spaced apart along the length direction of the first assembly plate. In order to improve the stability of the connecting structure between the fixing base 210 and the wheelchair frame 100 without complicating the structure of the two, the part of the wheelchair frame 100 located in the first assembly groove 211 and in contact with the fixing base 210 is a flat columnar structure, that is, the side surface of the wheelchair frame 100 in contact with the first assembly plate and the second assembly plate is a plane, and the rest of the surface of the part located in the first assembly groove 211 is a circular arc surface. Through such a design, the first assembly plate and the second assembly plate of the fixing base 210 maintain a larger contact area with the wheelchair frame 100, which can improve the stability and reliability of the fixing structure of the two without increasing the number of bolt connection pairs.

[0040] More specifically, the second connecting assembly 250 is a group of bolt connection pairs, and the shank of the bolt in the second connecting assembly 250 sequentially penetrates the third assembly plate, the first end of the foot support rod 220, the fourth assembly plate and is connected with the bolt, thereby realizing the connection between the foot support rod 220 and the fixing base 210, and the first axis is parallel to the axis of the shank in the second connecting assembly 250.

[0041] The following specifically describes that the fixing base 210, the foot support rod 220 and the second connecting assembly 250 are configured as follows and realize the fixed or rotary connection between the foot support rod 220 and the fixing base 210.

[0042] Specifically, the third assembly plate and the fourth assembly plate are provided with two or more assembly hole groups, each assembly hole group including two coaxial assembly holes (i.e., the third assembly hole and the fourth assembly hole) located at the same height surface on the third assembly plate and the fourth assembly plate, and the structures and sizes of all the assembly holes are the same, wherein the height surface is taken as the reference in the longitudinal direction of the second assembly groove 212. Taking two assembly hole groups as an example, the two assembly hole groups are defined as the third assembly hole group and the fourth assembly hole group, the third assembly hole group and the fourth assembly hole group are located at different height surfaces, and the foot support rod 220 can be connected with the fixing base 210 through the second connecting assembly 250, the third assembly hole group or the fourth assembly hole group.

[0043] When the screw of the second connecting assembly 250 passes through the through hole on the first end of the foot support rod 220 of the third assembly hole group, the foot support rod 220 is connected with the fixed seat 210, the first end of the foot support rod 220 has a first height difference with the groove bottom of the second assembly groove 212, the first height difference is smaller than the vertical distance between the through hole and the first end surface, the foot support rod 220 and the fixed seat 210 are connected through the second connecting assembly 250 and are limited to keep the fixed posture; when the screw of the second connecting assembly 250 passes through the through hole on the first end of the foot support rod 220 of the fourth assembly hole group, the foot support rod 220 is connected with the fixed seat 210, the first end of the foot support rod 220 has a second height difference with the groove bottom of the second assembly groove 212, the second height difference is greater than or equal to the vertical distance between the through hole and the first end surface, the foot support rod 220 and the fixed seat 210 are connected through the second connecting assembly 250 and the foot support rod 220 can rotate around the second connecting assembly 250.

[0044] It can be understood that when the screw of the second connecting assembly 250 passes through the through hole on the first end of the foot support rod 220 of the third assembly hole group, the foot support rod 220 is connected with the fixed seat 210, although the foot support rod 220 and the second connecting assembly 250 are movable, the rotation of the foot support rod 220 is limited and blocked by the fixed seat 210, so that the rotation of the foot support rod 220 is limited and keeps a relatively fixed posture with the fixed seat 210, and when the screw of the second connecting assembly 250 passes through the through hole on the first end of the foot support rod 220 of the fourth assembly hole group, the foot support rod 220 is connected with the fixed seat 210, the foot support rod 220 is not limited by the fixed seat 210 when rotating in the direction of moving away from the fixed seat 210, so it can rotate within a certain angle, that is, the foot support rod 220 can be lifted upward relative to the wheelchair frame 100. Through such design, without changing the structure of the foot support rod 220, only by changing the assembly position of the foot support rod 220 on the fixed seat 210, the foot support rod 220 can be in a fixed posture or a rotatable and adjustable adjusting posture.

[0045] Specifically, in order to further improve the adjustment smoothness of the pedal support rod 220 in the rotatable adjustment state, the bottom of the second assembly groove 212 is further provided with an avoiding groove, the width of the avoiding groove is smaller than the width of the second assembly groove 212, the width of the first end of the pedal support rod 220 is smaller than the width of the second assembly groove 212, the width of the first end of the pedal support rod 220 is greater than the width of the avoiding groove and smaller than the width of the second assembly groove 212, the first end surface of the pedal support rod 220 is a fillet structure, the avoiding groove is an arc-shaped groove or a semi-cylindrical groove, and it should be noted that the width of the avoiding groove is smaller than the width of the first end of the pedal support rod 220. When the screw rod of the second connecting assembly 250 passes through the third assembly hole group and the through hole on the first end of the pedal support rod 220 to connect the pedal support rod 220 with the fixed seat 210, the pedal support rod 220 cannot rotate out of the limitation of the fixed seat 210.

[0046] In a more specific embodiment, please refer to Figure 5 , while maintaining the angle-adjustable angle between the pedal support rod 220 and the fixed seat 210, the angle between the pedal support rod 220 and the fixed seat 210 is fixed, and the pedal further comprises an angle adjustment assembly, the angle adjustment assembly comprises an adjusting piece 280 and a limiting column 290, the adjusting piece 280 is rotatably connected with the pedal support rod 220, the adjusting piece 280 has a guide hole 281, the guide hole 281 is an arc-shaped hole extending along the rotation direction of the pedal support rod 220 around the first axis (the adjusting piece 280 is an arc-shaped member as a whole, and the arc length direction of the adjusting piece 280 is the rotation direction of the pedal support rod 220 around the first axis), the first side wall of the guide hole 281 has a plurality of limiting protrusions, the plurality of limiting protrusions are arranged at intervals along the arc length direction of the guide hole 281, a clamping groove is formed between adjacent two limiting protrusions and between the outermost limiting protrusion and the hole wall of the guide hole 281, a gap between the limiting protrusion and the second side wall of the guide hole 281 is provided for the limiting column to pass through, and the first side wall and the second side wall are oppositely arranged along the width direction of the guide hole 281; the limiting column 290 is fixed on the fixed seat 210, part of the limiting column 290 is arranged in the guide hole 281 and can move relative to the adjusting piece 280 along the arc length direction of the guide hole 281, and under the action of the gravity of the adjusting piece 280, the limiting column 290 is correspondingly arranged in the clamping groove and is relatively fixed with the adjusting piece 280, so that the pedal support rod 220 and the fixed seat 210 maintain a fixed angle, and by relatively moving the adjusting piece 280 and the limiting column along the arc length direction of the guide hole 281, the limiting column 290 can be clamped in different clamping grooves, so that the pedal support rod 220 and the fixed seat 210 present different angles. Specifically, the limiting column 290 is fixed on the third assembly plate or the fourth assembly plate, the limiting column 290 can be a bolt, and the limiting column 290 can be threadedly connected with the third assembly plate or the fourth assembly plate.

[0047] Specifically, the third connecting assembly includes an adapter seat 261, a first adapter shaft, and a second adapter shaft 262. The adapter seat 261 is rotationally connected to the second end of the footrest support rod 220 via the first adapter shaft, and the second adapter shaft 262 is fixedly connected to the adapter seat. The footrest plate 230 is rotationally connected to the second adapter shaft 262, so that the footrest plate 230 can be switched between the working state and the storage state. The first axis is parallel to the axis of the first adapter shaft, and the second axis is parallel to the axis of the second adapter shaft 262.

[0048] It should be noted that the rotation angle range of the adapter seat 261 around the first adapter shaft is 0-90°, and the rotation angle range of the footrest plate 230 around the second adapter shaft 262 is 0-90°. The rotation angle range of the adapter seat 261 can be achieved by a rotation limiting structure between the adapter seat 261 and the footrest support rod 220. The rotation limiting structure is arranged on the rotation track of the adapter seat 261. The rotation limiting structure can be the footrest support rod 220 or a limiting protrusion arranged on the footrest support rod 220. Similarly, the footrest plate 230 is also provided with a rotation limiting structure. It can be understood that the rotation limiting structure is a conventional design known in the art for limiting the rotation angle range of the moving member, and is not limited here.

[0049] In a more specific embodiment, please refer to Figure 5 The footrest also includes a leg support pad 270 arranged on the footrest support rod 220 and rotationally matched with the footrest support rod 220. It should be noted that the leg support pad 270 and the footrest support rod 220 are also provided with a rotation limiting structure for limiting the rotation angle range of the leg support pad 270, so that the rotation angle range of the leg support pad 270 around the footrest support rod 220 is limited to 0-90°.

[0050] The wheelchair footrest provided by the embodiment of the utility model realizes the adjustment and change of the footrest state through the configuration of the fixing seat and the connecting assembly, without the need to increase additional accessories and structures, and without the need to reconfigure the structure of the footrest and the wheelchair frame. Different functions of the footrest are adjusted on the same wheelchair, thereby reducing the cost of adapting the wheelchair footrest to different needs.

[0051] It should be understood that the above embodiments are only for illustrating the technical concept and characteristics of the utility model, and the purpose is to enable persons skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit and essence of the utility model should be covered within the protection scope of the utility model.

Claims

1. A wheelchair footrest, characterized in that, include: Fixed base, foot support rod, foot pedal, first connecting assembly, second connecting assembly and third connecting assembly, The mounting base has a first mounting slot and a second mounting slot disposed back-to-back. The first mounting slot allows partial embedding of the wheelchair frame. The first connecting assembly is used to fix the mounting base to the wheelchair frame. The first end of the foot pedal support rod is disposed in the second mounting slot. The first end of the foot pedal support rod is connected to the mounting base via the second connecting assembly. The second connecting assembly, the foot pedal support rod, and the mounting base are configured such that the foot pedal support rod can only rotate about a first axis relative to the mounting base, or the foot pedal support rod is fixed to the mounting base. The foot pedal is connected to the second end of the foot pedal support rod via the third connecting assembly. The third connecting assembly, the foot pedal, and the foot pedal support rod are configured such that the foot pedal can rotate about a first axis and / or a second axis relative to the foot pedal support rod. The first axis is perpendicular to the second axis.

2. The wheelchair footrest according to claim 1, characterized in that: The fixing base includes a base and a first assembly plate, a second assembly plate, a third assembly plate, and a fourth assembly plate. The base has a first side and a second side that are positioned opposite each other. The first assembly plate and the second assembly plate are fixedly disposed on the first surface of the base and together with the first surface form the first assembly groove; the third assembly plate and the fourth assembly plate are fixedly disposed on the second surface of the base and together with the second surface form the second assembly groove. Both the third assembly plate and the fourth assembly plate are provided with at least one third assembly hole and at least one fourth assembly hole. In the longitudinal direction of the second assembly groove, the third assembly hole and the fourth assembly hole are located at different height planes. All third assembly holes are located at the same height plane, and all fourth assembly holes are located at the same height plane. The third assembly holes on the third assembly plate and the fourth assembly plate are configured as at least one group of third assembly holes. The two third assembly holes included in each group of third assembly holes are coaxially arranged. The fourth assembly holes on the third assembly plate and the fourth assembly plate are configured as at least one group of fourth assembly holes. The two fourth assembly holes included in each group of fourth assembly holes are coaxially arranged. The first end of the foot pedal support rod has a first end face and a through hole adjacent to the first end face and extending radially through it. Each of the second connecting components is disposed within the through hole and a third or fourth assembly hole group. When the second connecting component is disposed within the third assembly hole group, there is a first height difference between the first end of the foot pedal support rod and the bottom of the second assembly groove. The first height difference is less than the vertical distance between the through hole and the first end face. The foot pedal support rod and the fixed seat are connected via the second connecting component and are restricted to maintain a fixed posture. When the second connecting component is disposed within the fourth assembly hole group, there is a second height difference between the first end of the foot pedal support rod and the bottom of the second assembly groove. The second height difference is greater than or equal to the vertical distance between the through hole and the first end face. The foot pedal support rod and the fixed seat are connected via the second connecting component, and the foot pedal support rod can rotate around the second connecting component.

3. The wheelchair footrest according to claim 2, characterized in that: The bottom of the second assembly slot is also provided with a clearance groove, the width of which is smaller than the width of the second assembly slot, and the width of the first end of the foot support rod is smaller than the width of the second assembly slot.

4. The wheelchair footrest according to claim 3, characterized in that: The first end face of the foot support rod has a rounded corner structure, and the clearance groove is an arc-shaped groove or a semi-cylindrical groove.

5. The wheelchair footrest according to claim 2, characterized in that: The length extension directions of the first assembly groove and the second assembly groove are parallel.

6. The wheelchair footrest according to claim 5, characterized in that: The first assembly plate, the second assembly plate, the third assembly plate, and the fourth assembly plate are all arranged in parallel.

7. The wheelchair footrest according to claim 1, characterized in that: Both the first connecting component and the second connecting component are bolted connections.

8. The wheelchair footrest according to claim 1, characterized in that: The third connecting component includes an adapter seat, a first adapter shaft, and a second adapter shaft. The adapter seat is rotatably connected to the foot pedal support rod via the first adapter shaft. The second adapter shaft is fixedly connected to the adapter seat. The foot pedal is rotatably connected to the second adapter shaft. The first axis is parallel to the axis of the first adapter shaft, and the second axis is parallel to the axis of the second adapter shaft.

9. The wheelchair footrest according to claim 1, characterized in that, Also includes: Angle adjustment component, The angle adjustment assembly includes an adjustment plate and a limiting post. The adjustment plate is rotatably connected to the foot pedal support rod. The adjustment plate has a guide hole, which is an arc-shaped hole extending along the rotation direction of the foot pedal support rod around the first axis. The first sidewall of the guide hole has multiple limiting protrusions, which are spaced apart along the arc length direction of the guide hole. A groove is formed between two adjacent limiting protrusions and between the outermost limiting protrusion and the hole wall of the guide hole. The gap between the limiting protrusion and the second sidewall of the guide hole allows the limiting post to pass through. The first sidewall and the second sidewall are arranged opposite each other along the width direction of the guide hole. The limiting post is fixed on the fixed base. A portion of the limiting post is disposed within the guide hole and can move relative to the adjusting plate along the arc length direction of the guide hole. Under the gravity of the adjusting plate, the limiting post is correspondingly disposed within the slot and remains relatively fixed to the adjusting plate, thereby maintaining a fixed angle between the foot pedal support rod and the fixed base. Furthermore, by causing the adjusting plate and the limiting post to move relative to each other along the arc length direction of the guide hole, the limiting post can be engaged in different slots, thereby causing the foot pedal support rod and the fixed base to present different included angles.

10. The wheelchair footrest according to claim 9, characterized in that: The adjusting plate is an arc-shaped component, and the arc length of the adjusting plate is the rotation direction of the foot pedal support rod around the first axis.

11. The wheelchair footrest according to claim 1, characterized in that, Also includes: A leg support pad is disposed on the foot pedal support rod and rotates in conjunction with the foot pedal support rod.

12. A wheelchair, characterized in that: The wheelchair includes the wheelchair footrests as described in any one of claims 1-11, and the mounting base is fixedly connected to the wheelchair frame.

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