Wheelchair pedal structure, wheelchair frame and wheelchair

Abstract

The utility model discloses a wheelchair pedal structure, a wheelchair frame and a wheelchair. The wheelchair pedal structure comprises a pedal pipe and a pedal plate, the pedal plate is used for bearing pressure applied by the feet of a user, the pedal pipe is connected with the pedal plate through a pivot, the pedal pipe and the pedal plate have a first state and a second state, the first state is used for supporting the feet of the user, and the second state is used for storage. The wheelchair pedal structure further comprises a springback piece, the springback piece is connected with the pedal pipe and the pedal plate, the springback piece is used for applying elastic force to the pedal plate, when the pressure applied by the feet of the user is larger than the elastic force of the springback piece, the pedal pipe and the pedal plate are in a first state, and when the pressure applied by the feet of the user is smaller than the elastic force of the springback piece, the pedal pipe and the pedal plate are in a second state. The pedal pipe and the pedal plate are in the second state, so that the technical effects that the pedal plate is automatically converted into the folded state when not used by people, and slipping between the foot and the pedal plate is prevented are achieved.

Description

Technical Field

[0001] The utility model relates to a wheelchair footrest structure, a wheelchair frame and a wheelchair, and belongs to the technical field of wheelchairs. Background Art

[0002] A wheelchair is a chair with wheels that can help replace walking. It is an important means of transportation for the injured, sick, and disabled for home rehabilitation, transportation, medical treatment, and outdoor activities. A wheelchair not only meets the transportation needs of the physically disabled and those with limited mobility, but more importantly, it makes it easier for family members to move and care for the patients, allowing the patients to exercise and participate in social activities with the help of a wheelchair.

[0003] Wheelchairs need to be folded and stored after use. In addition to the chair body, the wheelchair's footrests also need to be folded. In existing wheelchair footrests, the footrests are typically folded upward manually, so that the end faces of the footrests are parallel to the axis of the footrest tube. However, this leads to the following problems: after the wheelchair is used, the injured person must manually fold the footrests, requiring them to bend over and perform other actions that are inconvenient for the injured person. Alternatively, the footrests may be forgotten to be folded after use, resulting in damage to the footrests during storage. This creates significant inconvenience when storing the wheelchair. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a wheelchair footrest structure, a wheelchair frame and a wheelchair.

[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solutions adopted by the utility model include:

[0006] An embodiment of the present utility model provides a wheelchair footrest structure, including a footrest tube and a foot pedal, wherein the foot pedal is used to withstand the pressure applied by the user's foot, the footrest tube and the foot pedal are pivotally connected, and the footrest tube and the foot pedal have a first state and a second state, the first state is used to support the user's foot, and the second state is used to store the foot. It is characterized in that the wheelchair footrest structure also includes a rebound member, which is respectively connected to the footrest tube and the foot pedal, and is used to apply elastic force to the foot pedal. When the pressure applied by the user's foot is greater than the elastic force of the rebound member, the footrest tube and the foot pedal are in the first state, and when the pressure applied by the user's foot is less than the elastic force of the rebound member, the footrest tube and the foot pedal are in the second state.

[0007] Furthermore, the resilient member includes an elastic section and a fixed section, the fixed section is fixedly arranged on the pedal tube, and one end of the elastic member abuts against the first surface of the pedal.

[0008] Furthermore, when the pedal tube and the foot pedal are in a first state, a 90° angle is formed between the first surface of the foot pedal and the axis of the pedal tube; when the pedal tube and the foot pedal are in a second state, a 0° angle is formed between the first surface of the foot pedal and the axis of the pedal tube.

[0009] Furthermore, the elastic segment includes a first segment and a second segment, one end of the first segment abuts against the first surface, one end of the second segment is connected to the other end of the first segment, the other end of the second segment is connected to the fixed segment, and an angle is formed between the first segment and the second segment.

[0010] Furthermore, an escape opening is provided on at least a portion of the first section and the second section, and the pedal tube passes through the escape opening. The diameter of the pedal tube is slightly smaller than the diameter of the escape opening, and the pedal tube can move along a given direction within the escape opening.

[0011] Furthermore, the wheelchair footrest structure also includes an anti-slip mechanism, which is arranged on a second surface opposite to the first surface. The anti-slip mechanism includes a first anti-slip portion and a second anti-slip portion, and the second anti-slip portion is arranged around the first anti-slip portion.

[0012] Furthermore, the first anti-slip portion includes a plurality of anti-slip blocks arranged in an array, the anti-slip blocks are formed in a pyramid shape, and the bottom surface of the anti-slip blocks is arranged on the second surface.

[0013] Furthermore, the second anti-slip portion includes a plurality of anti-slip strips, at least a portion of the anti-slip strips are arranged in parallel on two opposite sides of the first anti-slip portion, and at least a portion of the anti-slip strips are arranged on the other two opposite sides of the first anti-slip portion.

[0014] Furthermore, the wheelchair footrest structure further includes a plurality of first ribs and a plurality of second ribs, and the first ribs and the second ribs are staggeredly arranged on the first surface.

[0015] The utility model also provides a wheelchair frame having the wheelchair footrest structure.

[0016] The utility model also provides a wheelchair having the wheelchair footrest structure.

[0017] Compared with the prior art, the advantages of the present invention include:

[0018] 1. The wheelchair footrest structure provided by the present invention is provided with a storage member, so that the footrest can be automatically converted to a storage state after use, thereby avoiding the tedious steps of manually retracting the footrest when storing the wheelchair and the damage to the footrest caused by failure to retract the footrest in time when storing the wheelchair;

[0019] 2. The utility model provides a design of an anti-slip structure of a wheelchair footrest structure, that is, the second anti-slip portion is arranged around the first anti-slip portion, which greatly increases the contact area between the sole of the foot and the anti-slip structure, thereby increasing the friction and better preventing slipping between the foot and the footrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram from a first perspective of a wheelchair footrest structure provided in a typical embodiment of the present invention;

[0022] Figure 2 This is an enlarged schematic diagram of part A of a wheelchair footrest structure provided in a typical embodiment of the present invention;

[0023] Figure 3 This is a schematic structural diagram from a first perspective of a wheelchair footrest structure provided in a typical embodiment of the present invention;

[0024] Figure 4 It is a bottom view of a wheelchair footrest structure provided in a typical implementation case of the utility model.

[0025] Description of reference numerals:

[0026] 1. Pedal tube; 2. Pedal; 3. Rebound member; 4. Anti-slip mechanism; 5. First surface; 6. First anti-slip portion; 7. Second anti-slip portion; 8. First section; 9. Second section; 10. Second surface; 11. Fixed section; 12. Bolt; 13. Avoidance; 14. Anti-slip block; 15. Anti-slip strip; 16. First rib; 17. Second rib. DETAILED DESCRIPTION

[0027] In view of the shortcomings of the existing technology, the inventors of this case, after long-term research and extensive practice, have proposed the technical solution of this utility model. The following will further explain this technical solution, its implementation process and principles.

[0028] Example 1

[0029] Figure 1-Figure 4The wheelchair footrest structure of the first embodiment is shown, comprising a footrest tube 1 and a footrest 2. The footrest 2 is used to withstand pressure applied by the user's foot. The footrest tube 1 and the footrest 2 are pivotally connected, and the footrest tube 1 and the footrest 2 have a first state and a second state. The effects of the first and second states are discussed below: the first state provides stable support for the user's foot. The second state rotates the footrest 2 relative to the footrest tube 1 until the end surface of the footrest 2 is nearly parallel to the axis of the footrest tube 1, facilitating storage of the entire wheelchair. The wheelchair footrest structure of this embodiment also includes a resilient member 3, which is connected to the footrest tube 1 and the footrest 2, and which elastically deforms when subjected to an external force. The formation of the first and second states is discussed below: the resilient member 3 applies an elastic force to the footrest 2, and the user's foot also applies pressure to the footrest 2. The elastic force and pressure acting on the footrest 2 ultimately form a combined force on the footrest 2. When the pressure applied by the user's foot is greater than the elastic force of the resilient member 3, the footrest tube 1 and the footrest 2 are resiliently deformed. 2 is in a first state, at this time the resultant force drives the end face of the foot pedal 2 and the axis of the foot pedal tube 1 to form an angle of nearly 90°, so that the user's foot can be stably placed on the foot pedal 2; when the pressure applied by the user's foot is less than the elastic force of the rebound member 3, the foot pedal tube 1 and the foot pedal 2 are in a second state, at this time the resultant force drives the end face of the foot pedal 2 and the axis of the foot pedal tube 1 to form an angle of nearly 0°, that is, the end face of the foot pedal 2 and the axis of the foot pedal tube 1 are nearly parallel to form a folded state and convenient for subsequent storage.

[0030] The structure of the rebound member 3 is further explained below: the rebound member 3 includes an elastic section and a fixed section 11, the fixed section 11 is fixedly arranged on the pedal tube 1, one end of the elastic member abuts on the first surface 5 of the foot pedal 2, the elastic section includes a first section 8 and a second section 9, one end of the first section 8 abuts on the first surface 5, one end of the second section 9 is connected to the other end of the first section 8, and the other end of the second section 9 is connected to the fixed section 11, and an angle is formed between the first section 8 and the second section 9. In this embodiment, the first section 8 and the second section 9 are both sheet structures, and the angle formed between the first section 8 and the second section 9 includes but is not limited to 90°. The angle between the first section 8 and the second section 9 suitable for rebounding the foot pedal 2 to the storage state can be used as the protection scope of the present utility model.

[0031] When the pedal tube 1 and the footrest 2 are in the first state, a 90° angle is formed between the first surface 5 of the footrest 2 and the axis of the pedal tube 1, which can put the user's feet in the most comfortable support state. When the pedal tube 1 and the footrest 2 are in the second state, a 0° angle is formed between the first surface 5 of the footrest 2 and the axis of the pedal tube 1, which can facilitate further storage operations.

[0032] An avoidance opening 13 is provided on at least a portion of the first section 8 and the second section 9, and the pedal tube 1 passes through the avoidance opening 13. The avoidance opening 13 is mainly provided to avoid the rebound member 3 from conflicting with the pedal tube 1 when elastic deformation occurs, thereby hindering the normal rotation of the foot pedal 2, and the diameter of the pedal tube 1 is slightly smaller than the diameter of the avoidance opening 13. The "slightly smaller" is further explained here: there is a distance between the outer cylindrical surface of the pedal tube 1 and the edge of the avoidance opening 13. The purpose of setting the above distance is to enable the pedal tube 1 to be guided by the pedal tube 1 to a certain extent when moving inside the avoidance opening 13, and to enable the pedal tube 1 to move along the length direction of the avoidance opening 13. If the distance between the outer cylindrical surface of the pedal tube 1 and the edge of the avoidance opening 13 is too large, the guiding effect will be lost.

[0033] Example 2

[0034] The following is a wheelchair footrest structure of the second embodiment. The structure of a wheelchair footrest structure in this embodiment is basically the same as that of Example 1. The difference from Example 1 is that in this embodiment, the wheelchair footrest structure also includes an anti-slip mechanism 4. The anti-slip mechanism 4 is arranged on a second surface 10 opposite to the first surface 5. The anti-slip mechanism 4 includes a first anti-slip portion 6 and a second anti-slip portion 7. The second anti-slip portion 7 is arranged around the first anti-slip portion 6. This arrangement greatly increases the anti-slip area of the anti-slip mechanism 4 on the second surface 10. When the user's foot is placed on the footrest 2, it can provide good support for the foot and prevent the foot from slipping on the footrest 2.

[0035] The following is a detailed description of the first anti-slip portion 6 and the second anti-slip portion 7. The first anti-slip portion 6 includes a plurality of anti-slip blocks 14 arranged in an array. The anti-slip blocks 14 are formed in a pyramid shape, and the bottom surface of the anti-slip blocks 14 is set on the second surface 10; the second anti-slip portion 7 includes a plurality of anti-slip strips 15, at least a portion of the anti-slip strips 15 are set in parallel on the two opposite sides of the first anti-slip portion 6, and at least a portion of the anti-slip strips 15 are set on the other two opposite sides of the first anti-slip portion 6. For example, two of the anti-slip strips 15 are respectively arranged along the two opposite sides of the rectangular array of the anti-slip blocks 14, and the other anti-slip strips 15 are divided into two groups, which are respectively arranged in parallel along the other two sides of the rectangular array of the anti-slip blocks 14. This design greatly increases the contact area between the sole of the foot and the anti-slip structure, thereby increasing the friction and better preventing slipping between the foot and the foot pedal 2.

[0036] Preferably, the wheelchair footrest structure further includes a plurality of first ribs 16 and a plurality of second ribs 17 , and the first ribs 16 and the second ribs 17 are staggeredly arranged on the first surface 5 to form support for the footrest 22 , thereby greatly improving the support strength of the footrest 2 .

[0037] It should be understood that the above embodiments are merely illustrative of the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A wheelchair footrest structure, comprising a footrest tube (1) and a footrest (2), wherein the footrest (2) is used to withstand the pressure exerted by the user's foot, the footrest tube (1) and the footrest (2) are pivotally connected, and the footrest tube (1) and the footrest (2) have a first state and a second state, wherein the first state is used to support the user's foot and the second state is used to store the foot, and the wheelchair is characterized in that: The wheelchair footrest structure further comprises a resilient member (3), the resilient member (3) being connected to the footrest tube (1) and the footrest (2) respectively, the resilient member (3) being used to apply elastic force to the footrest (2); when the pressure applied by the user's foot is greater than the elastic force of the resilient member (3), the footrest tube (1) and the footrest (2) are in a first state; when the pressure applied by the user's foot is less than the elastic force of the resilient member (3), the footrest tube (1) and the footrest (2) are in a second state.

2. The wheelchair footrest structure according to claim 1, characterized in that: The resilient member (3) comprises an elastic section and a fixed section (11), wherein the fixed section (11) is fixedly arranged on the pedal tube (1), and one end of the elastic section abuts against the first surface (5) of the pedal (2).

3. The wheelchair footrest structure according to claim 2, characterized in that: When the pedal tube (1) and the foot pedal (2) are in a first state, a 90° angle is formed between the first surface (5) of the foot pedal (2) and the axis of the pedal tube (1); when the pedal tube (1) and the foot pedal (2) are in a second state, a 0° angle is formed between the first surface (5) of the foot pedal (2) and the axis of the pedal tube (1).

4. The wheelchair footrest structure according to claim 2, characterized in that: The elastic section comprises a first section (8) and a second section (9), one end of the first section (8) abuts against the first surface (5), one end of the second section (9) is connected to the other end of the first section (8), the other end of the second section (9) is connected to the fixed section (11), and an angle is formed between the first section (8) and the second section (9).

5. The wheelchair footrest structure according to claim 4, characterized in that: At least a portion of the first section (8) and the second section (9) is provided with an escape opening (13), the pedal tube (1) passes through the escape opening (13), the diameter of the pedal tube (1) is slightly smaller than the diameter of the escape opening (13), and the pedal tube (1) can move in a given direction within the escape opening (13).

6. The wheelchair footrest structure according to claim 2, characterized in that: The wheelchair footrest structure further includes an anti-slip mechanism (4), which is arranged on a second surface (10) opposite to the first surface (5), and the anti-slip mechanism (4) includes a first anti-slip portion (6) and a second anti-slip portion (7), wherein the second anti-slip portion (7) is arranged around the first anti-slip portion (6).

7. The wheelchair footrest structure according to claim 6, characterized in that: The first anti-slip portion (6) includes a plurality of anti-slip blocks (14) arranged in an array, the anti-slip blocks (14) are formed in a pyramidal shape, and the bottom surface of the anti-slip blocks (14) is arranged on the second surface (10); And / or, the second anti-slip portion (7) includes a plurality of anti-slip strips (15), at least a portion of the anti-slip strips (15) are arranged in parallel on two opposite sides of the first anti-slip portion (6), and at least a portion of the anti-slip strips (15) are arranged on the other two opposite sides of the first anti-slip portion (6).

8. The wheelchair footrest structure according to claim 2, characterized in that: The wheelchair footrest structure further comprises a plurality of first ribs (16) and a plurality of second ribs (17), wherein the first ribs (16) and the second ribs (17) are staggeredly arranged on the first surface (5).

9. A wheelchair frame, characterized in that: A wheelchair footrest structure according to any one of claims 1 to 8.

10. A wheelchair, characterized in that: A wheelchair footrest structure according to any one of claims 1 to 8.

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