Rehabilitation equipment vehicle and speed regulation wheel thereof

Abstract

The utility model provides a rehabilitation equipment vehicle and a speed regulation wheel thereof, the speed regulation wheel of rehabilitation equipment vehicle comprises a hub, a shaft hole is arranged in the hub, a first bearing and a second bearing which are sequentially arranged along the axial direction of the shaft hole are arranged in the shaft hole, and the outer ring of the first bearing and the outer ring of the second bearing are connected with the inner wall of the shaft hole; the frame connecting piece is used for being assembled with a frame of the rehabilitation equipment vehicle, and the frame connecting piece is arranged on one side of the hub and abuts against an inner ring of the first bearing; the speed regulation assembly comprises a fixing screw rod, an adjusting knob and an elastic compression piece, the fixing screw rod is rotationally arranged on the frame connecting piece, the fixing screw rod penetrates through the shaft hole and sequentially penetrates through the inner ring of the first bearing and the inner ring of the second bearing, and the adjusting knob is in threaded fit with the fixing screw rod and is arranged on the side, away from the frame connecting piece, of the hub; and the elastic compression sheet is arranged between the adjusting knob and the hub.

Description

Technical Field

[0001] This utility model relates to the field of medical rehabilitation equipment technology, specifically to a rehabilitation equipment vehicle and its speed-adjustable wheels. Background Technology

[0002] Medical rehabilitation equipment carts are typically used to assist elderly, frail, or mobility-impaired individuals with walking difficulties.

[0003] When using a medical rehabilitation equipment vehicle, the moving speed usually needs to be adjusted according to the user's situation. The speed is usually relatively low. In order to achieve speed adjustment, a speed reduction structure is usually added to the frame to press against the tires. The speed is reduced by the friction of the tires through the speed reduction structure. However, this can easily damage the tires, and the adjustment of the speed reduction structure is relatively troublesome. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies in the existing technology and to provide a rehabilitation equipment cart and its speed-adjusting wheels.

[0005] One embodiment of this utility model provides a speed-regulating wheel for a rehabilitation equipment cart, comprising:

[0006] A hub, wherein a shaft hole is provided inside the hub, and a first bearing and a second bearing are arranged sequentially along the axial direction of the shaft hole, wherein the outer rings of the first bearing and the second bearing are connected to the inner wall of the shaft hole;

[0007] A frame connector for assembling with the frame of a rehabilitation equipment cart, the frame connector being disposed on one side of the wheel hub and abutting against the inner ring of the first bearing;

[0008] The speed control assembly includes a fixing screw, an adjusting knob, and an elastic compression plate. The fixing screw is rotatably mounted on the frame connector. The fixing screw passes through the shaft hole and sequentially passes through the inner ring of the first bearing and the inner ring of the second bearing. The adjusting knob is threadedly engaged with the fixing screw and is located on the side of the wheel hub away from the frame connector. The elastic compression plate is located between the adjusting knob and the wheel hub.

[0009] In some alternative embodiments, a shaped threaded sleeve is fitted onto the fixing screw, and a threaded portion is provided on the outer side of the shaped threaded sleeve. The adjusting knob is threadedly engaged with the threaded portion. The shaped threaded sleeve is located on the side of the second bearing away from the first bearing, and the end of the shaped threaded sleeve abuts against the inner ring of the second bearing.

[0010] In some alternative embodiments, an inner sleeve is fitted onto the fixing screw, the inner sleeve being located between the first bearing and the second bearing, with both ends of the inner sleeve abutting against the inner rings of the first bearing and the second bearing, respectively.

[0011] In some alternative embodiments, a limiting nut is threaded onto the fixing screw, the limiting nut abutting against the end of the irregular threaded sleeve and pressing the irregular threaded sleeve against the inner ring of the second bearing.

[0012] In some alternative embodiments, two protruding support steps are provided in the shaft hole, the two support steps are located between the first bearing and the second bearing, and the outer rings of the first bearing and the second bearing respectively abut against the two support steps.

[0013] In some alternative embodiments, the adjusting knob has an embedded nut, and the adjusting knob is threadedly engaged with the fixing screw through the embedded nut.

[0014] In some alternative embodiments, a retaining plate is detachably provided on the side of the wheel hub away from the frame connector, the retaining plate confining the second bearing within the shaft hole, and the elastic compression plate pressing against the retaining plate.

[0015] In some alternative embodiments, a gasket is provided between the elastic compression sheet and the adjustment knob.

[0016] Another embodiment of this utility model provides a rehabilitation equipment cart, including: a speed-regulating wheel as described above for a rehabilitation equipment cart.

[0017] Compared with existing technologies, the speed-regulating wheel structure of the rehabilitation equipment cart of this utility model is simple, easy to assemble, and can be installed quickly without the need for special tools. The speed regulation is more stable and the wheel hub is less likely to be damaged.

[0018] To provide a clearer understanding of this invention, the specific embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the speed-regulating wheel of a rehabilitation equipment cart according to an embodiment of the present invention;

[0020] Figure 2 An exploded view of the speed-regulating wheel of a rehabilitation equipment cart according to an embodiment of this utility model;

[0021] Figure 3 This is a cross-sectional view of the speed-regulating wheel of a rehabilitation equipment cart according to an embodiment of the present invention;

[0022] Figure 4 for Figure 3 The enlarged view at point A is shown below;

[0023] Figure 5 This is a cross-sectional view of a wheel hub according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the adjustment knob according to one embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10. Wheel hub; 11. Axle hole; 111. Support step; 12. First bearing; 13. Second bearing; 14. Fixing plate; 20. Frame connector; 30. Speed ​​control assembly; 31. Fixing screw; 311. Limit cap; 32. Adjustment knob; 321. Embedded nut; 33. Elastic compression plate; 34. Special threaded sleeve; 35. Inner sleeve; 36. Limit nut; 37. Washer. Detailed Implementation

[0027] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments thereof. Please refer to... Figures 1 to 4 One embodiment of this utility model provides a speed-regulating wheel for a rehabilitation equipment cart, comprising: a wheel hub 10, a frame connector 20, and a speed-regulating assembly 30;

[0028] A tire can be fitted onto the outer side of the hub 10. The hub 10 has an axle hole 11. A first bearing 12 and a second bearing 13 are arranged sequentially along the axial direction of the axle hole 11. The outer ring of the first bearing 12 and the outer ring of the second bearing 13 are connected to the inner wall of the axle hole 11.

[0029] The frame connector 20 is used for assembly with the frame of the rehabilitation equipment cart. The frame connector 20 is located on one side of the wheel hub 10 and abuts against the inner ring of the first bearing 12.

[0030] The speed control assembly 30 includes a fixing screw 31, an adjustment knob 32, and an elastic compression plate 33. The fixing screw 31 is rotatably mounted on the frame connector 20. The fixing screw 31 passes through the shaft hole 11 and sequentially passes through the inner ring of the first bearing 12 and the inner ring of the second bearing 13. The adjustment knob 32 is threadedly engaged with the fixing screw 31 and is located on the side of the wheel hub 10 away from the frame connector 20. The elastic compression plate 33 is located between the adjustment knob 32 and the wheel hub 10.

[0031] The working principle of the speed-adjusting wheel of a rehabilitation equipment cart according to an embodiment of this utility model is explained below: The wheel hub 10 can rotate relative to the fixed screw 31 through the support of the first bearing 12 and the second bearing 13. By turning the adjustment knob 32, the adjustment knob 32 moves along the fixed screw 31, thereby squeezing the elastic compression plate 33 towards the wheel hub 10. The elastic compression plate 33 is squeezed to provide a certain buffer, thereby avoiding damage to the wheel hub 10. The sliding friction between the wheel hub 10 and the elastic compression plate 33 will reduce the rotation speed of the wheel hub 10. The sliding friction between the wheel hub 10 and the elastic compression plate 33 is affected by the pressing force of the adjustment knob 32 on the elastic compression plate 33. The greater the pressing force, the greater the sliding friction between the wheel hub 10 and the elastic compression plate 33. The greater the sliding friction between the wheel hub 10 and the elastic compression plate 33, the slower the rotation speed of the wheel hub 10. The overall adjustment method is simple and does not easily damage the wheel hub 10.

[0032] In some alternative embodiments, a special-shaped threaded sleeve 34 is sleeved on the fixing screw 31. The outer side of the special-shaped threaded sleeve 34 is provided with a threaded part. The adjusting knob 32 is threadedly engaged with the threaded part. The special-shaped threaded sleeve 34 is located on the side of the second bearing 13 away from the first bearing 12. The end of the special-shaped threaded sleeve 34 abuts against the inner ring of the second bearing 13. The second bearing 13 is restricted by the special-shaped threaded sleeve 34, which facilitates installation.

[0033] In some optional embodiments, an inner sleeve 35 is fitted onto the fixing screw 31. The inner sleeve 35 is located between the first bearing 12 and the second bearing 13. The two ends of the inner sleeve 35 abut against the inner rings of the first bearing 12 and the second bearing 13, respectively. The inner sleeve 35 helps to improve the stability between the first bearing 12 and the second bearing 13. The irregular threaded sleeve 34 can press the inner ring of the second bearing 13 against the inner ring of the first bearing 12, thereby improving the stability of the overall structure.

[0034] In some optional embodiments, a limiting nut 36 is threadedly connected to the fixing screw 31. The limiting nut 36 abuts against the end of the irregular threaded sleeve 34 and presses the irregular threaded sleeve 34 against the inner ring of the second bearing 13. The limiting nut 36 can rotate relative to the fixing screw 31 and move along the fixing screw 31. The limiting nut 36 can restrict the position of the second bearing 13. In this embodiment, the limiting nut 36, the irregular threaded sleeve 34, the inner ring of the second bearing 13, the inner sleeve 35, the inner ring of the first bearing 12, and the frame connector 20 are arranged sequentially along the fixing screw 31. The limiting nut 36 actually... The special threaded sleeve 34, the inner ring of the second bearing 13, the inner sleeve 35, and the inner ring of the first bearing 12 are pressed against the frame connector 20. Therefore, the special threaded sleeve 34, the inner ring of the second bearing 13, the inner sleeve 35, the inner ring of the first bearing 12, and the frame connector 20 can be connected together by the limit nut 36. This prevents the special threaded sleeve 34, the inner ring of the second bearing 13, the inner sleeve 35, and the inner ring of the first bearing 12 from moving along the axial direction of the fixing screw 31. The overall installation operation is convenient, and the limit nut 36 can be turned by hand, so there is no need to use special tools for installation.

[0035] It should be noted that in this embodiment, a limiting cap 311 is provided at the end of the fixing screw 31. The limiting cap 311 cooperates with the frame connector 20 to prevent the fixing screw 31 from moving axially toward the wheel hub 10 relative to the frame connector 20. Due to the locking of the limiting nut 36, the limiting cap 311 is pressed against the frame connector 20. Of course, other methods can also be used to limit the axial movement of the fixing screw 31, and this example is not limited to this one.

[0036] Please see Figure 5 In some optional embodiments, two protruding support steps 111 are provided in the shaft hole 11. The two support steps 111 are located between the first bearing 12 and the second bearing 13. The outer rings of the first bearing 12 and the second bearing 13 respectively abut against the two support steps 111. The inner rings of the first bearing 12 and the second bearing 13 are restricted by the limiting nut 36. Therefore, the inner rings of the first bearing 12 and the second bearing 13 cannot move along the axial direction of the fixing screw 31. The outer rings of the first bearing 12 and the second bearing 13 abut against the two support steps 111. Thus, the position of the hub 10 is restricted by the cooperation of the outer rings of the first bearing 12 and the second bearing 13 with the two support steps 111, so that the hub 10 cannot move along the axial direction of the fixing screw 31.

[0037] Please see Figure 6In some optional embodiments, an embedded nut 321 is provided inside the adjusting knob 32. The adjusting knob 32 is threadedly engaged with the fixing screw 31 through the embedded nut 321, thereby facilitating the threaded engagement between the adjusting knob 32 and the fixing screw 31. In this embodiment, the embedded nut 321 of the adjusting knob 32 achieves the threaded engagement with the fixing screw 31 through a special-shaped threaded sleeve 34.

[0038] In some alternative embodiments, a retaining plate 14 is detachably provided on the side of the wheel hub 10 away from the frame connector 20. The retaining plate 14 restricts the second bearing 13 within the shaft hole 11. An elastic compression plate 33 presses against the retaining plate 14, preventing the retaining plate 14 from rotating relative to the wheel hub 10. The elastic compression plate 33 applies force to the wheel hub 10 through the retaining plate 14, thereby achieving deceleration. The retaining plate 14 can be disassembled for easy replacement if it is damaged.

[0039] The fixing piece 14 can be detachably mounted on the wheel hub 10 through a snap-fit ​​structure, a threaded structure, or other methods. For example, in this embodiment, the wheel hub 10 is provided with a positioning groove, the fixing piece 14 is positioned and engaged with the positioning groove, and the elastic compression piece 33 presses the fixing piece 14 tightly into the positioning groove.

[0040] In some alternative embodiments, a shim 37 is provided between the elastic compression sheet 33 and the adjusting knob 32, and the adjusting knob 32 presses against the elastic compression sheet 33 through the fixing piece 14, which helps to improve the uniformity of the elastic compression sheet 33.

[0041] The following describes the assembly process of the speed-regulating wheel of a rehabilitation equipment cart according to an embodiment of this utility model:

[0042] The first bearing 12, inner sleeve 35, and second bearing 13 are installed into the shaft hole 11. Then, the fixing screw 31 is passed through the frame connector 20. The fixing screw 31 then passes through the inner ring of the first bearing 12, the inner sleeve 35, and the inner ring of the second bearing 13 in sequence. Then, the irregular threaded sleeve 34 is put on the fixing screw 31. Next, the limiting nut 36 is connected to the fixing screw 31. The limiting nut 36 moves toward the frame connector 20. The limiting nut 36 locks the irregular threaded sleeve 34, the inner ring of the second bearing 13, the inner sleeve 35, and the inner ring of the first bearing 12. Then, the elastic compression plate 33 and the washer 37 are put on the outside of the irregular threaded sleeve 34. The adjusting knob 32 is screwed to the irregular threaded sleeve 34. The adjusting knob 32 presses the elastic compression plate 33 against the fixing plate 14 on the wheel hub 10 through the washer 37. The subsequent speed adjustment function is achieved by adjusting the position of the adjusting knob 32.

[0043] The speed-adjusting wheel of the rehabilitation equipment cart described above can be applied to the rehabilitation equipment cart, which includes: the speed-adjusting wheel of the rehabilitation equipment cart described above.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A speed-regulating wheel for a rehabilitation equipment cart, characterized in that, include: A hub, wherein a shaft hole is provided inside the hub, and a first bearing and a second bearing are arranged sequentially along the axial direction of the shaft hole, wherein the outer rings of the first bearing and the second bearing are connected to the inner wall of the shaft hole; A frame connector for assembling with the frame of a rehabilitation equipment cart, the frame connector being disposed on one side of the wheel hub and abutting against the inner ring of the first bearing; The speed control assembly includes a fixing screw, an adjusting knob, and an elastic compression plate. The fixing screw is rotatably mounted on the frame connector. The fixing screw passes through the shaft hole and sequentially passes through the inner ring of the first bearing and the inner ring of the second bearing. The adjusting knob is threadedly engaged with the fixing screw and is located on the side of the wheel hub away from the frame connector. The elastic compression plate is located between the adjusting knob and the wheel hub.

2. The speed-regulating wheel of a rehabilitation equipment cart according to claim 1, characterized in that: A special-shaped threaded sleeve is fitted on the fixed screw. The outer side of the special-shaped threaded sleeve is provided with a threaded part. The adjusting knob is threadedly engaged with the threaded part. The special-shaped threaded sleeve is located on the side of the second bearing away from the first bearing. The end of the special-shaped threaded sleeve abuts against the inner ring of the second bearing.

3. The speed-regulating wheel of a rehabilitation equipment cart according to claim 2, characterized in that: An inner sleeve is fitted onto the fixing screw. The inner sleeve is located between the first bearing and the second bearing, and the two ends of the inner sleeve abut against the inner rings of the first bearing and the second bearing, respectively.

4. The speed-regulating wheel of a rehabilitation equipment cart according to claim 2, characterized in that: A limiting nut is threaded onto the fixing screw. The limiting nut abuts against the end of the irregular threaded sleeve and presses the irregular threaded sleeve against the inner ring of the second bearing.

5. The speed-regulating wheel of a rehabilitation equipment cart according to claim 4, characterized in that: The shaft hole is provided with two protruding support steps, which are located between the first bearing and the second bearing. The outer rings of the first bearing and the second bearing respectively abut against the two support steps.

6. The speed-regulating wheel of a rehabilitation equipment cart according to any one of claims 1 to 5, characterized in that: The adjustment knob has an embedded nut inside, and the adjustment knob is threadedly engaged with the fixing screw through the embedded nut.

7. The speed-regulating wheel of a rehabilitation equipment cart according to any one of claims 1 to 5, characterized in that: A retaining plate is detachably provided on the side of the wheel hub away from the frame connector, the retaining plate restricting the second bearing within the shaft hole, and the elastic compression plate pressing against the retaining plate.

8. The speed-regulating wheel of a rehabilitation equipment cart according to any one of claims 1 to 5, characterized in that: A gasket is provided between the elastic compression sheet and the adjustment knob.

9. A rehabilitation equipment cart, characterized in that, include: The speed-regulating wheel of a rehabilitation equipment vehicle as described in any one of claims 1 to 8.

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