Plastic hand wheel of wheelchair

Abstract

The utility model discloses a wheelchair plastic hand wheel, which comprises a wheel outer ring, a wheel inner ring, a hand wheel body and a telescopic adjusting component, the wheel inner ring is connected with the wheel outer ring, a transmission seat convenient to connect with a wheelchair is arranged in the middle of the wheel inner ring, a plurality of supporting steel bars are arranged on the wheel inner ring, and the supporting steel bars are all connected with the transmission seat; the hand wheel body is connected with the wheel inner ring through the telescopic adjusting assembly. The hand wheel has the advantages that due to the fact that the hand wheel body is connected with the inner ring of the wheel through the telescopic adjusting assembly, when the hand wheel is used, a user can unfold the hand wheel body towards the outer side of the inner ring of the wheel through the telescopic adjusting assembly, and therefore the purpose of adjusting the distance between the hand wheel body and the inner ring of the wheel is achieved; by means of the design, the palm of a user can completely hold the hand wheel body, the force exerting effect of the palm is better, and more labor is saved.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, and in particular to a plastic handwheel for wheelchairs. Background Technology

[0002] When using a manual wheelchair, the user needs to manually drive the manual wheels to move the wheelchair.

[0003] Manual wheels typically include a wheel body and a handwheel located on one side of the wheel body. The wheel body is used to contact the ground for support, and the handwheel is used by the user to grip and drive.

[0004] Currently, wheelchairs on the market typically have the handwheels welded to the wheel body. This design results in a small gap between the handwheels and the wheel body, and because it is welded, it cannot be adjusted. As a result, during use, the user's hand cannot grip the entire handwheel, making it difficult to exert force with the palm and requiring a lot of effort to drive the handwheels. In addition, because the gap between the handwheels and the wheel body is small, fingers can easily get stuck between the handwheels and the wheel body, thus posing a certain safety hazard. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this invention is to propose a plastic wheelchair handrail that can adjust the distance between the handrail and the wheel body, effectively solving safety hazards.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A plastic wheelchair armrest includes an outer wheel rim, an inner wheel rim, an armrest body, and a telescopic adjustment assembly. The inner wheel rim is connected to the outer wheel rim, and a transmission seat for easy connection to a wheelchair is provided in the middle of the inner wheel rim. The inner wheel rim is provided with multiple support steel bars, all of which are connected to the transmission seat. The armrest body is connected to the inner wheel rim via the telescopic adjustment assembly. The telescopic adjustment assembly includes a fixed pin seat and a pin arm. The fixed pin seat is disposed on the inner wall of the inner wheel rim and has multiple limiting holes. The pin arm is disposed on the inner wall of the armrest body and has a limiting member. After the pin arm is inserted into the interior of the fixed pin seat, the limiting member can engage with the limiting hole.

[0008] Preferably, in the above-mentioned plastic wheelchair armrest, the fixed pin seat is provided with a guide groove, the pin arm is provided with a sliding block, and the pin arm is slidably connected to the guide groove through the sliding block.

[0009] Preferably, in the above-mentioned plastic wheelchair armrest, the limiting member includes a fixing post, a return spring, and a limiting post. The pin arm has a groove, the fixing post is disposed inside the groove, one end of the return spring is sleeved on the outer wall of the fixing post, the other end of the return spring is connected to one end of the limiting post, and the other end of the limiting post can be inserted into the limiting hole.

[0010] Preferably, in the above-mentioned plastic wheelchair armrests, the sliding block is adapted to the guide groove.

[0011] Preferably, the aforementioned plastic wheelchair handrail has a supporting crossbeam on its body.

[0012] Preferably, the outer wall of the wheelchair plastic handrail described above is provided with an anti-slip part.

[0013] Preferably, in the aforementioned plastic wheelchair armrests, the supporting steel bars are connected to the transmission seat in a ring arrangement.

[0014] The beneficial effects of this utility model are:

[0015] (1) Since the handwheel body is connected to the inner ring of the wheel through the telescopic adjustment component, when in use, the user can unfold the handwheel body to the outside of the inner ring of the wheel through the telescopic adjustment component, thereby adjusting the distance between the handwheel body and the inner ring of the wheel. This design allows the user's palm to fully grasp the handwheel body, making the palm exert force more effectively and saving more effort.

[0016] (2) The telescopic adjustment component includes a fixed pin seat and a pin arm. The fixed pin seat is set on the inner wall of the inner rim of the wheel, and the pin arm is set on the inner wall of the handwheel body. The handwheel body is connected to the fixed pin seat pin through the pin arm, thereby completing the connection between the handwheel body and the inner rim of the wheel. Since the fixed pin seat has multiple limiting holes and the pin arm has limiting parts, when the user needs to adjust the distance between the handwheel body and the inner rim of the wheel, the user only needs to insert the pin arm into the fixed pin seat and then insert the limiting parts into the corresponding limiting holes to complete the adjustment. This design achieves the purpose of adjusting the distance between the handwheel body and the inner rim of the wheel, and also effectively avoids the risk of pinching the user's fingers due to the small distance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0019] Figure 3This is a cross-sectional view of the fixed pin holder and the pin arm after the pin is connected.

[0020] Figure 4 This is a schematic diagram of the structure after the limit component and the pin arm are installed;

[0021] Figure 5 This is a structural diagram of a fixed pin holder;

[0022] Figure 6 This is a schematic diagram of the pin arm.

[0023] The components include: outer wheel rim 11, inner wheel rim 12, handwheel body 13, telescopic adjustment assembly 14, transmission seat 15, support steel bar 16, fixed pin seat 17, pin arm 18, limiting hole 19, limiting component 20, guide groove 21, sliding block 22, fixed column 23, return spring 24, limiting column 25, groove 26, support beam 27, and anti-slip part 28. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] like Figures 1-6As shown, a plastic wheelchair armrest includes an outer wheel ring 11, an inner wheel ring 12, an armrest body 13, and a telescopic adjustment assembly 14. The inner wheel ring 12 is connected to the outer wheel ring 11. A transmission seat 15 for easy connection to a wheelchair is provided in the center of the inner wheel ring 12. Multiple support steel bars 16 are provided on the inner wheel ring 12, and each support steel bar 16 is connected to the transmission seat 15. The armrest body 13 is connected to the inner wheel ring 12 via the telescopic adjustment assembly 14. The telescopic adjustment assembly 14 includes a fixing pin seat 17 and a pin arm 18. The fixing pin seat 17 is located on the inner wall of the inner wheel ring 12 and has multiple limiting positions. Hole 19 and pin arm 18 are set on the inner wall of the handwheel body 13. The pin arm 18 is provided with a limiting member 20. After the pin arm 18 is inserted into the interior of the fixed pin seat 17, the limiting member 20 can be inserted into the limiting hole 19. Since the handwheel body 13 is connected to the inner ring of the wheel through the telescopic adjustment component 14, when in use, the user can unfold the handwheel body 13 to the outside of the inner ring 12 of the wheel through the telescopic adjustment component 14, thereby achieving the purpose of adjusting the distance between the handwheel body 13 and the inner ring 12 of the wheel. This design allows the user's palm to fully grasp the handwheel body 13, making the palm exert force more effectively and saving more effort.

[0029] It is worth noting that the telescopic adjustment component 14 includes a fixed pin seat 17 and a pin arm 18. The fixed pin seat 17 is located on the inner wall of the inner rim 12 of the wheel, and the pin arm 18 is located on the inner wall of the handwheel body 13. The handwheel body 13 is connected to the fixed pin seat 17 via the pin arm 18, thereby completing the connection between the handwheel body 13 and the inner rim 12 of the wheel. Since the fixed pin seat 17 has multiple limiting holes 19 and the pin arm 18 has limiting members 20, when the user needs to adjust the distance between the handwheel body 13 and the inner rim 12 of the wheel, the user only needs to insert the pin arm 18 into the fixed pin seat 17 and engage the limiting member 20 with the corresponding limiting hole 19 to complete the adjustment. This design achieves the purpose of adjusting the distance between the handwheel body 13 and the inner rim 12 of the wheel, and also effectively avoids the risk of pinching the user's fingers due to the small distance.

[0030] In this embodiment, the wheelchair plastic armrest wheel has a guide groove 21 inside the fixed pin seat 17, and a sliding block 22 is provided on the pin arm 18. The pin arm 18 is slidably connected to the guide groove 21 through the sliding block 22. The sliding block 22 is adapted to the guide groove 21. This design makes the pin arm 18 smoother when inserted into the fixed pin seat 17, and also limits the pin arm 18, making the connection between the armrest wheel body 13 and the inner ring 12 of the wheel more secure.

[0031] In this embodiment, the wheelchair plastic armrest wheel includes a limiting member 20 comprising a fixing post 23, a return spring 24, and a limiting post 25. The pin arm 18 has a groove 26, the fixing post 23 is disposed inside the groove 26, one end of the return spring 24 is sleeved on the outer wall of the fixing post 23, and the other end of the return spring 24 is connected to one end of the limiting post 25. The other end of the limiting post 25 can be inserted into the limiting hole 19. When the user adjusts the armrest wheel body 13 and the inner wheel ring 12, the limiting post 25 and the return spring 24... Therefore, the user only needs to press the limiting post 25, and under the reaction force of the return spring 24, the limiting post 25 will extend and retract. This design allows the limiting post 25 to be inserted into the corresponding limiting hole 19 according to the user's needs. It should be noted that the pin arm 18 has a groove 26, and the groove 26 is provided with a fixing post 23 for fixing the return spring 24. This design makes the return spring 24 more secure and prevents the return spring 24 from shifting or falling off during the compression process.

[0032] In some embodiments, the wheelchair plastic handrail has a support beam 27 on the handrail body 13; this design makes the handrail body 13 more robust and provides better force distribution.

[0033] In some embodiments, the wheelchair's plastic armrests have an anti-slip part 28 on the outer wall of the armrest body 13; this design prevents the user's palm from slipping when gripping and driving the wheel.

[0034] In this embodiment, the plastic wheelchair armrests have supporting steel bars 16 arranged in a ring and connected to the transmission seat 15. This design improves the stability of the entire inner wheel ring 12 and the outer wheel ring 11, and also improves the weighing effect.

[0035] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A plastic armrest wheel for a wheelchair, characterized in that: The wheel includes an outer wheel rim, an inner wheel rim, a handwheel body, and a telescopic adjustment assembly. The inner wheel rim is connected to the outer wheel rim. The inner wheel rim has a transmission seat in the middle for easy connection with a wheelchair. The inner wheel rim is provided with multiple support steel bars, all of which are connected to the transmission seat. The handwheel body is connected to the inner wheel rim through the telescopic adjustment assembly. The telescopic adjustment assembly includes a fixed pin seat and a pin arm. The fixed pin seat is disposed on the inner wall of the inner rim of the wheel and has multiple limiting holes. The pin arm is disposed on the inner wall of the handwheel body and has a limiting member. After the pin arm is inserted into the interior of the fixed pin seat, the limiting member can be inserted into the limiting hole.

2. The wheelchair plastic armrests according to claim 1, characterized in that: The fixed pin seat has a guide groove inside, and the pin arm has a sliding block. The pin arm is slidably connected to the guide groove through the sliding block.

3. The wheelchair plastic armrests according to claim 1, characterized in that: The limiting component includes a fixing post, a return spring, and a limiting post. The pin arm has a groove, the fixing post is disposed inside the groove, one end of the return spring is sleeved on the outer wall of the fixing post, the other end of the return spring is connected to one end of the limiting post, and the other end of the limiting post can be inserted into the limiting hole.

4. The wheelchair plastic armrests according to claim 2, characterized in that: The sliding block is adapted to the guide groove.

5. The wheelchair plastic armrests according to claim 1, characterized in that: The handwheel body is provided with a supporting crossbeam.

6. The wheelchair plastic armrests according to claim 1, characterized in that: The outer wall of the handwheel body is provided with an anti-slip part.

7. The wheelchair plastic armrests according to claim 1, characterized in that: The supporting steel bars are connected to the transmission seat in a ring arrangement.

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