Pedal assembly and wheelchair

Abstract

The utility model provides a pedal assembly and wheelchair, wherein the pedal assembly comprises a supporting seat, a supporting rod and a connecting rod structure, the connecting rod structure is rotatably connected with the supporting rod to form a first connecting point, the connecting rod structure is rotatably connected with the supporting seat to form a second connecting point, and the connecting rod structure and the supporting rod rotate relative to each other. Therefore, the distance between the first connection point and the second connection point is changed. According to the pedal assembly and the wheelchair, when the state needs to be changed, the legs need to be lifted and placed horizontally, the connecting rod structure is adopted for adjustment, the leg support and the pedals rotate upwards, the leg support is parallel to the ground, the pedals are perpendicular to the ground, and the distance between the first connecting point and the second connecting point can be changed through mutual rotation between the connecting rod structure and the supporting rod; the distance between the leg support and the supporting base and the distance between the pedal and the supporting base are prolonged, the two legs of a user can be stretched and do not need to be kept in a bent state any more, the two legs of the user can be flatly placed on the leg support, and the use experience feeling is better.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, specifically to a foot pedal assembly and a wheelchair. Background Technology

[0002] Wheelchairs are mobile tools used for home rehabilitation, transportation, medical visits, and outdoor activities for the injured, sick, and disabled. Traditional wheelchairs generally have footrests for supporting the feet. In wheelchairs used for orthopedic rehabilitation, the footrests and leg rests are usually adjustable, allowing the user to raise their legs for treatment. However, in existing wheelchairs, the footrests can only be rotated to change posture. Since the legs are bent when using a wheelchair normally, simply rotating the footrests leaves the legs bent even after the footrests are laid flat, resulting in a poor user experience and inconvenience. Utility Model Content

[0003] The purpose of this invention is to provide a foot pedal assembly and a wheelchair, which aims to solve the problem that the legs of a person cannot be laid flat when the foot pedal assembly of an existing wheelchair is laid flat.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] In a first aspect, a foot pedal assembly is provided, including a support base, a support rod, and a connecting rod structure. The connecting rod structure is rotatably connected to the support rod to form a first connection point, and the connecting rod structure is rotatably connected to the support base to form a second connection point. The connecting rod structure and the support rod rotate relative to each other to change the distance between the first connection point and the second connection point.

[0006] Optionally, the linkage structure includes a first linkage, a second linkage, and a third linkage. One end of the first linkage is rotatably connected to the support rod to form the first connection point. The other end of the first linkage is rotatably connected to one end of the second linkage. The other end of the second linkage is rotatably connected to the support base to form the second connection point. One end of the third linkage is rotatably connected to the support rod, and the other end of the third linkage is rotatably connected to the second linkage.

[0007] Optionally, the foot pedal assembly further includes a limiting rod, one end of which is rotatably connected to the support base, and the other end of which is rotatably connected to the third connecting rod.

[0008] Optionally, the foot pedal assembly further includes an adjusting component, which includes a gas spring and a spring wrench. One end of the gas spring is rotatably connected to the support rod, and the other end of the gas spring is rotatably connected to the second connecting rod. The spring wrench is connected to the gas spring.

[0009] Optionally, the first link is provided with a first clearance groove for avoiding the support rod.

[0010] Optionally, the second link is provided with a second clearance groove for avoiding the gas spring.

[0011] Optionally, the third link is provided with a third clearance groove for avoiding the limiting rod.

[0012] Optionally, the foot pedal assembly further includes a leg rest connected to the support rod.

[0013] Optionally, the foot pedal assembly further includes a foot pedal connected to the support rod.

[0014] Secondly, a wheelchair is provided, including a seat frame and the aforementioned footrest assembly, wherein the support base is connected to the seat frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. In the foot pedal assembly provided by this utility model, during normal use, both the leg rest and the foot pedal are in a downward position, with the leg rest nearly perpendicular to the ground and the foot pedal nearly parallel to the ground. This allows the user to place both feet on the foot pedal more comfortably. When it is necessary to change the position and raise the legs to lie flat, a linkage structure is used for adjustment, causing the leg rest and foot pedal to rotate upward, with the leg rest parallel to the ground and the foot pedal perpendicular to the ground. Through the mutual rotation between the linkage structure and the support rod, the distance between the first connection point and the second connection point can be changed, thereby extending the distance between the leg rest and the foot pedal and the support seat. This allows the user's legs to be extended without having to remain bent, and the user's legs can be placed flat on the leg rest, resulting in a better user experience. Moreover, the adjustment is very simple, making it more convenient to use.

[0017] 2. The wheelchair provided by this utility model uses the above-mentioned foot pedal assembly, which allows the user to place both legs flat on the leg rest when lifting their legs, resulting in a better user experience. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the foot pedal assembly of this utility model during normal use;

[0020] Figure 2 This is a side view of the foot pedal assembly of this utility model in normal use;

[0021] Figure 3 This is a schematic diagram of the foot pedal assembly of this utility model when the foot is raised and placed flat.

[0022] Figure 4 This is a side view of the foot pedal assembly of this utility model when the foot is raised and placed flat.

[0023] In the diagram: 1. Support base; 2. Support rod; 3. Adjusting component; 31. Gas spring; 32. Spring wrench; 4. Linkage structure; 41. First link; 42. Second link; 43. Third link; 5. Leg rest; 6. Foot pedal; 7. Limiting rod; 8. First connection point; 9. Second connection point. Detailed Implementation

[0024] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0027] The following is combined Figures 1 to 4 This invention describes the foot pedal assembly and wheelchair.

[0028] like Figures 1 to 4 As shown, this utility model provides a foot pedal assembly, including a support base 1, a support rod 2, and a connecting rod structure 4. The connecting rod structure 4 is rotatably connected to the support rod 2 to form a first connection point 8, and the connecting rod structure 4 is rotatably connected to the support base 1 to form a second connection point 9. The connecting rod structure 4 and the support rod 2 rotate relative to each other to change the distance between the first connection point 8 and the second connection point 9.

[0029] For ease of explanation, in this embodiment, each orientation is as follows: Figure 1 As shown.

[0030] In the foot pedal assembly provided by this utility model, during normal use, both the leg rest 5 and the foot pedal are in a downward position, with the leg rest 5 nearly perpendicular to the ground and the foot pedal 6 nearly parallel to the ground. This allows the user to place both feet more comfortably on the foot pedal 6. When it is necessary to change the position and raise the legs to lie flat, the linkage structure 4 is used for adjustment, causing the leg rest 5 and the foot pedal to rotate upward, making the leg rest 5 parallel to the ground and the foot pedal 6 perpendicular to the ground. Through the mutual rotation between the linkage structure 4 and the support rod 2, the distance between the first connection point 8 and the second connection point 9 can be changed, that is, the distance between the leg rest 5 and the foot pedal 6 and the support seat 1 is extended. This allows the user's legs to be extended without having to remain bent, and the user's legs can be placed flat on the leg rest 5, resulting in a better user experience. Moreover, the adjustment is very simple, making it more convenient to use.

[0031] In some embodiments, the linkage structure 4 includes a first link 41, a second link 42, and a third link 43. One end of the first link 41 is rotatably connected to the support rod 2 to form a first connection point 8. The other end of the first link 41 is rotatably connected to one end of the second link 42. The other end of the second link 42 is rotatably connected to the support base 1 to form a second connection point 9. One end of the third link 43 is rotatably connected to the support rod 2, and the other end of the third link 43 is rotatably connected to the second link 42.

[0032] Specifically, such as Figures 1 to 4 As shown, the front end of the first link 41 is rotatably connected to the support rod 2, the rear end of the first link 41 is rotatably connected to the lower end of the second link 42, the upper end of the second link 42 is rotatably connected to the support base 1, the front end of the third link 43 is rotatably connected to the upper end of the support rod 2, and the rear end of the third link 43 is rotatably connected to the second link 42 and located at a position slightly below the upper end of the second link 42, thus forming a linkage structure. The overall structure is very simple, making it more convenient to use, and also effectively reducing the production cost of wheelchairs.

[0033] In some embodiments, the pedal assembly further includes a limiting rod 7. One end of the limiting rod 7 is rotatably connected to the support base 1, and the other end of the limiting rod 7 is rotatably connected to the third link 43. Specifically, the upper end of the limiting rod 7 is rotatably connected to the support base 1 and located above the second link 42, and the lower end of the limiting rod 7 is rotatably connected to the middle position of the third link 43, thereby forming a linkage structure that can limit the rotation amplitude of the link structure 4, thereby limiting the rotation amplitude of the entire pedal assembly, making it more convenient to use.

[0034] In some embodiments, the foot pedal assembly further includes an adjusting member 3, which includes a gas spring 31 and a spring wrench 32. One end of the gas spring 31 is rotatably connected to the support rod 2, and the other end of the gas spring 31 is rotatably connected to the second connecting rod 42. The spring wrench 32 is connected to the gas spring 31. The shape of the gas spring 31 is adjusted by using the spring wrench 32, thereby adjusting the shape of the connecting rod structure 44, so that the entire foot pedal assembly can switch between the normal use state and the flat state, making it more convenient to operate. Moreover, the gas spring 31 has a relatively slow speed, little change in dynamic force, and is easy to control, making it safer to use.

[0035] In some embodiments, the first link 41 is provided with a first clearance groove for avoiding the support rod 2, which can minimize the space occupied by the overall structure, resulting in higher space utilization and a more aesthetically pleasing overall appearance.

[0036] In some embodiments, the second link 42 is provided with a second clearance groove for avoiding the gas spring 31, which can minimize the space occupied by the overall structure, resulting in higher space utilization and a more aesthetically pleasing overall appearance.

[0037] In some embodiments, the third link 43 is provided with a third clearance groove for avoiding the limiting rod 7, which can minimize the space occupied by the overall structure, resulting in higher space utilization and a more aesthetically pleasing overall appearance.

[0038] In some embodiments, the foot pedal assembly also includes a leg rest 5, which is connected to the support rod 2 to support the lower leg for better comfort.

[0039] In some embodiments, the foot pedal assembly further includes a foot pedal 6 connected to the support rod 2 for supporting the feet and providing better comfort.

[0040] In addition, this utility model also provides a wheelchair, including a seat frame and the aforementioned foot pedal assembly. The support seat 1 is connected to the seat frame. With the aforementioned foot pedal assembly, when the user lifts their legs, both legs can be placed flat on the leg rest 5, resulting in a better user experience.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A footrest assembly comprising: The footrest assembly comprises a support base (1), a support rod (2) and a linkage structure (4), the linkage structure (4) is rotatably connected with the support rod (2) and forms a first connecting point (8), the linkage structure (4) is rotatably connected with the support base (1) and forms a second connecting point (9), and the linkage structure (4) and the support rod (2) rotate relative to each other to change the distance between the first connecting point (8) and the second connecting point (9).

2. The footrest assembly of claim 1, wherein, The linkage structure (4) comprises a first linkage (41), a second linkage (42) and a third linkage (43), one end of the first linkage (41) is rotatably connected with the support rod (2) and forms the first connecting point (8), the other end of the first linkage (41) is rotatably connected with one end of the second linkage (42), the other end of the second linkage (42) is rotatably connected with the support base (1) and forms the second connecting point (9), one end of the third linkage (43) is rotatably connected with the support rod (2), and the other end of the third linkage (43) is rotatably connected with the second linkage (42).

3. The footrest assembly of claim 2, wherein, The footrest assembly further comprises a limiting rod (7), one end of the limiting rod (7) is rotatably connected with the support base (1), and the other end of the limiting rod (7) is rotatably connected with the third linkage (43).

4. The footrest assembly of claim 3, wherein, The footrest assembly further comprises an adjusting member (3), the adjusting member (3) comprises a gas spring (31) and a spring wrench (32), one end of the gas spring (31) is rotatably connected with the support rod (2), the other end of the gas spring (31) is rotatably connected with the second linkage (42), and the spring wrench (32) is connected with the gas spring (31).

5. The footrest assembly of claim 4, wherein, The first linkage (41) is provided with a first avoiding groove for avoiding the support rod (2).

6. The footrest assembly of claim 5, wherein, The second linkage (42) is provided with a second avoiding groove for avoiding the gas spring (31).

7. The footrest assembly of claim 6, wherein, The third linkage (43) is provided with a third avoiding groove for avoiding the limiting rod (7).

8. The footrest assembly of claim 1, wherein, The footrest assembly further comprises a leg support (5), and the leg support (5) is connected with the support rod (2).

9. The footrest assembly of claim 1, wherein, The footrest assembly further comprises a footboard (6), and the footboard (6) is connected with the support rod (2).

10. A wheelchair characterized by The footrest assembly comprises a seat frame and the footrest assembly according to any one of claims 1 to 9, and the support base (1) is connected with the seat frame.

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