Pedal turnover mechanism of wheelchair

Abstract

The utility model discloses a pedal turnover mechanism of a wheelchair, which comprises a wheelchair frame, a pedal and a pedal, a connecting groove is formed in one end of the supporting rod, the supporting rod is rotationally arranged on the connecting part through the connecting groove, and a connecting pipe is arranged at the other end, provided with the connecting groove, of the supporting rod; the wheelchair pedal is used for providing a foot placing area and is rotationally arranged on the connecting pipe; the wheelchair pedals and the supporting rods are rotated to form a folded state or an unfolded state, the width of the two pedals of the folded pedal structure is almost equal to the width of wheelchair frames on the two sides, the activity space of the feet can be effectively expanded in the non-moving state, and due to the fact that the pedals are of a split structure, the structure is simple and convenient. Therefore, a large leg movement space cannot be occupied in an unfolded state.

Description

Technical Field

[0001] The present application relates to the technical field of electric wheelchairs, and particularly to a footrest flipping mechanism for a wheelchair vehicle. Background Art

[0002] As a means of transportation for disabled or mobility-impaired individuals, electric wheelchairs have become essential assistive tools for their daily lives and travel. However, traditional electric wheelchairs lack attention to the footrest part, resulting in the footrest occupying a large amount of space when the user is in a non-moving state, making it inconvenient for the user to operate in a narrow space.

[0003] Therefore, the footrest folding structure on an electric wheelchair is particularly important. For example, a footrest for an electric wheelchair proposed in the patent publication No. CN208511366U adopts an integrated footrest, and a leg guard is provided between the outer clamping members. However, for some users who require a large range of leg movement, it has become a limitation. At the same time, the transportation cost of such an electric wheelchair is relatively high due to its volume.

[0004] The above content is only used to assist in understanding the technical solution of the present application, and does not represent an admission that the above content is the closest prior art to the present application. Summary of the Invention

[0005] Based on this, the present application provides a footrest flipping mechanism for a wheelchair vehicle to solve one of the above technical problems.

[0006] The technical solution adopted by the present application to solve its technical problems includes: a wheelchair frame, a part of which extends out a connecting portion; a support rod, one end of which is provided with a connecting groove, and the support rod is rotatably arranged on the connecting portion through the connecting groove, and a connecting pipe is arranged at the other end where the connecting groove is opened; a wheelchair footrest, which is used to provide a placement area for the feet and is rotatably arranged on the connecting pipe; by rotating the wheelchair footrest and the support rod, a folded state or an unfolded state is formed.

[0007] In some embodiments, in the unfolded state, the end face of the support rod abuts against the connecting portion is an arc-shaped end face.

[0008] In some embodiments, the part of the connecting portion that abuts against the support rod includes an arc segment and a straight segment. The arc segment cooperates with the arc-shaped end face in the unfolded state and can rotate in one direction, and the straight segment extends obliquely to the outer periphery of the wheelchair frame.

[0009] In some embodiments, an inclined slope surface is formed on the connecting groove, and in the folded state, the inclined slope surface abuts against the straight segment.

[0010] In some embodiments, a blocking portion is provided at one end of the connecting groove, and in the unfolded state, the blocking portion abuts against the connecting portion.

[0011] In some embodiments, the wheelchair pedal includes a pedal portion and a rotating portion. The rotating portion is formed on one side of the pedal portion. The inside of the rotating portion is hollow and is rotatably arranged on the connecting pipe through a first damping shaft.

[0012] In some embodiments, the length of the pedal portion connecting one side of the rotating portion is greater than that of the rotating portion. In the unfolded state, a part of the pedal portion abuts against the support rod.

[0013] In some embodiments, the horizontal height of the rotating portion in the unfolded state is higher than the horizontal height of the pedal portion.

[0014] In some embodiments, the connecting groove and the connecting portion are rotatably connected through a second damping shaft.

[0015] The beneficial effects of the present application are as follows: The folded pedal structure is almost flush with the widths of the wheelchair frames on both sides in terms of the width of the two pedals, which can effectively expand the foot activity space in the non-moving state. And because the pedal adopts a split structure, it will not occupy a large amount of leg activity space in the unfolded state. The existence of the blocking portion and the pedal portion enables it to have good compressive resistance in the unfolded state and will not cause the pedal or the support rod to rotate due to normal use. At the same time, the folded pedal can complete the overall folding of the electric wheelchair when the seat cushion and backrest of the electric wheelchair are removed without mutual interference, reducing the overall volume and transportation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 is an exploded schematic view of the footrest installation of the present application.

[0018] Figure 2 is a three-dimensional schematic view of the support rod of the present application.

[0019] Figure 3 is a schematic view of the unfolded state of the present application.

[0020] Figure 4 is a schematic view of the folded state of the present application.

[0021] Figure 5It is a schematic diagram of the wheelchair folding of the present application.

[0022] Explanation of the reference numerals in the drawings: 1. Wheelchair frame; 11. Connecting part; 12. Arc section; 13. Straight section; 2. Support rod; 21. Connecting groove; 211. Inclined slope; 212. Blocking part; 213. Second damping shaft; 22. Connecting pipe; 23. Arc end face; 3. Wheelchair pedal; 31. Pedal part; 32. Rotating part; 33. First damping shaft. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection of the present application.

[0024] In the embodiments of the present application, please refer to Figures 1-4 As shown, the present application provides a footrest flipping mechanism for a wheelchair, mainly including:

[0025] A wheelchair frame 1, a part of which extends out a connecting part 11; a support rod 2, one end of which is provided with a connecting groove 21, the support rod 2 is rotatably arranged on the connecting part 11 through the connecting groove 21, and a connecting pipe 22 is arranged at the other end where the connecting groove 21 is opened; a wheelchair pedal 3, used to provide a placement area for the feet, and is rotatably arranged on the connecting pipe 22; by rotating the wheelchair pedal 3, a folded state or an unfolded state is formed with the support rod 2.

[0026] Referring to Figure 3 As shown, in the unfolded state, the wheelchair pedal 3 will be perpendicular to the support rod 2 and cannot rotate downward, and the support rod 2 will tend to be placed at an angle extending from the connecting part 11 of the wheelchair frame 1 and cannot rotate downward further to play a stable supporting role for the user's feet.

[0027] Referring to Figure 4 As shown, in the folded state, the wheelchair pedal 3 will be close to the wheelchair frame 1 under the action of the support rod 2, achieving the function of flipping and storing, effectively increasing the range of leg movement

[0028] Next, some preferred / improved embodiments based on the above embodiments will be further elaborated. Any one of the following embodiments can be selected, or multiple embodiments can be selected for combination.

[0029] Specifically, in the unfolded state, the end face of the support rod 2 abutted against the connecting portion 11 is an arc-shaped end face 23. Such a setting can effectively optimize the smoothness of the rotation of the support rod 2 and prevent interference.

[0030] Referring Figure 1 As shown, in order to cooperate with the arc-shaped end face 23 of the support rod 2 and increase the upper limit of the rotation range of the support rod 2 after folding, the portion of the connecting portion 11 abutting against the support rod 2 includes an arc segment 12 and a straight segment 13. The arc segment 12 cooperates with the arc-shaped end face 23 in the unfolded state and can rotate in one direction, and the straight segment 13 extends obliquely to the outer periphery of the wheelchair frame 1.

[0031] Specifically, an inclined slope 211 is formed on the connecting groove 21. In the folded state, the inclined slope 211 abuts against the straight segment 13. With such a setting, when the support rod 2 enters the folded state from the unfolded state, the arc-shaped end face 23 rotates along the axis until it can no longer rotate. At this time, the inclined slope 211 abuts against a part of the connecting portion 11, protecting the parts from being damaged due to forced continuous rotation and also playing a role in auxiliary positioning.

[0032] Referring Figure 2 As shown, a blocking portion 212 is provided at one end of the connecting groove 21. In the unfolded state, the blocking portion 212 abuts against the connecting portion 11. With such a setting, when the wheelchair pedal 3 is subjected to force in the unfolded state, it will not continue to rotate downward, restricting the rotation range of the support rod 2 and preventing the support rod 2 from deflecting due to the force of the user's foot.

[0033] Referring Figure 1 As shown, the wheelchair pedal 3 includes a pedal portion 31 and a rotating portion. The rotating portion 32 is formed on one side of the pedal portion 31. The inside of the rotating portion 32 is hollow and is rotatably arranged on the connecting pipe 22 through a first damping shaft 33. With such a setting, the damping shaft can effectively prevent the wheelchair pedal 3 in the folded state from falling naturally due to gravity or minor external factors, affecting the use.

[0034] Furthermore, the length of the pedal portion 31 connecting one side of the rotating portion 32 is greater than that of the rotating portion 32. In the unfolded state, a part of the pedal portion 31 abuts against the support rod 2. With such a setting, when a downward force is applied to the wheelchair pedal 3 in the unfolded state, a part of the pedal portion 31 will always abut against the support rod 2 and cannot continue to move downward, restricting the movement range of the wheelchair pedal 3 and preventing the wheelchair pedal 3 from deflecting due to the force of the user's foot.

[0035] Preferably, the horizontal height of the rotating part 32 in the unfolded state is higher than that of the pedal part 31. With this arrangement, the pedal part 31 in the folded state can be as close as possible to the support rod 2, further increasing the range of movement of the user's leg.

[0036] Preferably, in order to prevent the connecting rod from falling due to gravity or some minor external factors in the folded state, thereby affecting the use, the connecting groove 21 and the connecting part 11 are rotatably connected by a second damping shaft 213.

[0037] Refer to Figure 5 As shown, when the electric wheelchair needs to be folded as a whole, only the backrest and the seat cushion need to be removed, and the folding is completed by the wheelchair frame 1. There is no mutual interference between the pedal structures in the folded state, effectively improving the space utilization efficiency.

[0038] So far, various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present application. The foregoing embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A pedal turning mechanism for a wheelchair, characterized in that: include: a wheelchair frame having a portion extending beyond the connection portion; A support rod, one end of which is provided with a connection groove, the support rod is rotatably arranged on the connection portion through the connection groove, and the other end of which is provided with the connection groove is provided with a connection pipe; A wheelchair pedal, used to provide a foot placement area, and rotatably disposed on the connecting tube; The wheelchair pedal and the support rod are rotated to form a folded state or an unfolded state.

2. The pedal flipping mechanism of a wheelchair according to claim 1, characterized in that: In the unfolded state, the end surface of the support rod abutting against the connecting portion is an arc-shaped end surface.

3. The pedal flipping mechanism of a wheelchair according to claim 2, characterized in that: The portion of the connecting portion abutting against the support rod includes an arc segment and a straight segment. The arc segment cooperates with the arc end surface in an unfolded state and can rotate in one direction. The straight segment extends obliquely to the periphery of the wheelchair frame.

4. The pedal flipping mechanism of a wheelchair according to claim 3, characterized in that: An inclined slope is formed on the connecting groove, and in the folded state, the inclined slope abuts against the straight section.

5. The pedal flipping mechanism of a wheelchair according to claim 1, characterized in that: A blocking portion is provided at one end of the connecting groove, and in the unfolded state, the blocking portion abuts against the connecting portion.

6. The pedal flipping mechanism of a wheelchair according to claim 1, characterized in that: The wheelchair pedal comprises a pedal portion and a rotating portion, wherein the rotating portion is formed at one side of the pedal portion, the rotating portion is hollow inside and is rotatably disposed on the connecting pipe via a first damping shaft.

7. The pedal flipping mechanism of a wheelchair according to claim 6, characterized in that: The length of the pedal portion connected to the rotating portion is greater than that of the rotating portion, and a portion of the pedal portion abuts against the support rod in an unfolded state.

8. The pedal flipping mechanism of a wheelchair according to claim 6, characterized in that: The horizontal height of the rotating part in the unfolded state is higher than the horizontal height of the pedal part.

9. The pedal flipping mechanism of a wheelchair according to claim 1, characterized in that: The connecting groove and the connecting portion are rotatably connected via a second damping shaft.

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