A mounting device for a rehabilitation wheelchair auxiliary wheel

Abstract

The utility model relates to the technical field of wheelchair auxiliary wheel installation, especially to a kind of installation device for rehabilitation wheelchair auxiliary wheel, including base, the top of base is equipped with fixed pipe, in the rotating process of second threaded rod, movable block will be along the axial movement of second threaded rod up and down, to change the height position of movable block relative to bearing plate, so that the pressing block can be aligned with rehabilitation wheelchair backrest and be pressed and fixed, when the first threaded rod rotates, movable ring will move up and down with the rotation of first threaded rod, when movable ring moves, guide column slides in sliding slot and plays the role of guiding and limiting, ensure that movable ring can only linear motion along the axial direction of first threaded rod, and the movement of movable ring is transmitted to movable pipe by the cooperation of guide column and sliding slot, the height of bearing plate is flexibly adjusted, to adapt to rehabilitation wheelchair auxiliary wheel of different sizes and installation requirements, convenient operation, and better practicality.

Description

Technical Field

[0001] This utility model relates to the technical field of wheelchair auxiliary wheel installation, and in particular to an installation device for rehabilitation wheelchair auxiliary wheels. Background Technology

[0002] A rehabilitation wheelchair is a special type of wheelchair designed specifically for rehabilitation training, physical function recovery, and daily activity assistance. It not only possesses the basic mobility functions of a regular wheelchair but also incorporates diverse ergonomic designs, adjustable structures, and assistive devices to meet different rehabilitation needs. This helps users gradually restore muscle strength, joint mobility, balance, and body coordination at different stages of rehabilitation. It not only helps those with limited mobility to escape bedridden status and participate in social and recreational activities through independent movement, thus regulating their psychological state, but also promotes the recovery of motor function through assisted rehabilitation training. For example, hemiplegic patients can use a wheelchair for bed-chair transfer training, gradually strengthening their back muscles and improving their sitting balance. Paraplegic patients can achieve an upright posture by using a standing wheelchair, which helps improve digestive function and boost self-confidence. Assistive wheels need to be installed during the production of rehabilitation wheelchairs.

[0003] Traditionally, the installation of auxiliary wheels for rehabilitation wheelchairs is done manually. However, since there are four auxiliary wheels, the assembler needs to frequently adjust the position of the rehabilitation wheelchair during assembly, which is cumbersome and inconvenient. Therefore, to solve the above problems, this utility model provides an installation device for auxiliary wheels of rehabilitation wheelchairs. Utility Model Content

[0004] The purpose of this invention is to provide an installation device for auxiliary wheels of rehabilitation wheelchairs to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an installation device for auxiliary wheels of a rehabilitation wheelchair, comprising a base, a fixed tube installed on the top of the base, a support tube installed on the top of the fixed tube, a movable tube installed outside the support tube, a bearing plate installed on the top of the movable tube, a fixed ear installed at one end of the outer side of the bearing plate, a movable block installed on the fixed ear, a pressure plate installed on the top of the movable block, a plurality of support columns equally spaced at both ends of the outer side of the pressure plate, and a pressure block installed at the bottom of the support columns.

[0006] Preferably, a servo motor is installed at one outer end of the fixed tube, and a first bevel gear is installed after the output shaft of the servo motor passes through the interior of the fixed tube. A first threaded rod is installed between the inner bottom of the fixed tube and the inner top of the support tube. A second bevel gear is installed at one bottom end of the outer ring surface of the first threaded rod, and the first bevel gear and the second bevel gear mesh with each other.

[0007] Preferably, a movable ring is installed on the outer ring surface of the first threaded rod, and symmetrical grooves are provided at both ends of the outer side of the movable tube. Guide posts are installed at both ends of the outer side of the movable ring and inside the two grooves, and one end of the guide post is connected to the inner side wall of the movable tube.

[0008] Preferably, a fixing ring is installed on the outside of the movable tube, a support plate is installed on one end of the fixing ring, a second threaded rod is installed on the support plate, the top of the second threaded rod is rotatably connected to the bottom of the movable block, and a handle is installed on the bottom of the second threaded rod after it passes through the support plate.

[0009] Preferably, a support frame is installed at the end of the fixing ring away from the support plate, and a storage box is installed on the outside of the support frame.

[0010] Preferably, directional wheels are installed at two corners of the bottom of the base, and foot brake casters are installed at two corners of the bottom of the base away from the directional wheels.

[0011] In summary, this utility model has the following beneficial technical effects:

[0012] This is an installation device for auxiliary wheels of rehabilitation wheelchairs. During the rotation of the second threaded rod, the movable block moves up and down along the axial direction of the second threaded rod, thereby changing the height position of the movable block relative to the support plate. This allows the pressure block to be aligned with the backrest of the rehabilitation wheelchair for pressing and fixing. When the first threaded rod rotates, the movable ring moves up and down with the rotation of the first threaded rod. The guide post is installed on the movable ring and located in the groove of the movable tube. When the movable ring moves, the guide post slides in the groove to guide and limit the movement, ensuring that the movable ring can only move linearly along the axial direction of the first threaded rod. Furthermore, the movement of the movable ring is transmitted to the movable tube through the cooperation of the guide post and the groove, allowing the movable tube to rise or fall smoothly and accurately. This enables flexible adjustment of the height of the support plate to adapt to auxiliary wheels of rehabilitation wheelchairs of different sizes and installation requirements. The device is convenient to operate and has better practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an installation device for auxiliary wheels of a rehabilitation wheelchair according to an embodiment of this application;

[0014] Figure 2 This is a schematic diagram of the movable tube portion in an installation device for auxiliary wheels of a rehabilitation wheelchair according to an embodiment of this application;

[0015] Figure 3 This is a schematic diagram of the internal structure of the fixing tube in an installation device for an auxiliary wheelchair of a rehabilitation wheelchair according to an embodiment of this application;

[0016] Figure 4This is a schematic diagram of the internal structure of the movable tube in an installation device for auxiliary wheels of a rehabilitation wheelchair according to an embodiment of this application;

[0017] Figure 5 This is a schematic diagram of the support plate portion of an installation device for auxiliary wheels of a rehabilitation wheelchair according to an embodiment of this application.

[0018] Explanation of reference numerals in the attached drawings: 1. Base; 2. Fixed tube; 3. Support tube; 4. Movable tube; 5. Bearing plate; 6. Fixed ear; 7. Movable block; 8. Pressure plate; 9. Support column; 10. Pressure block; 11. Servo motor; 12. First bevel gear; 13. First threaded rod; 14. Second bevel gear; 15. Movable ring; 16. Slide groove; 17. Guide column; 18. Fixed ring; 19. Support plate; 20. Second threaded rod; 21. Throttle; 22. Support frame; 23. Storage box; 24. Directional wheel; 25. Foot brake swivel wheel. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1 - Figure 5 The present invention will be described in further detail below.

[0020] A mounting device for assistive wheels of a rehabilitation wheelchair, as described in the following description. Figure 1 - Figure 5 It includes a base 1, a fixed tube 2 installed on the top of the base 1, a support tube 3 installed on the top of the fixed tube 2, a movable tube 4 installed on the outside of the support tube 3, a bearing plate 5 installed on the top of the movable tube 4, a fixed ear 6 installed on one end of the outer side of the bearing plate 5, a movable block 7 installed on the fixed ear 6, a pressure plate 8 installed on the top of the movable block 7, and several support columns 9 installed at equal intervals on both ends of the outer side of the pressure plate 8, and a pressure block 10 installed at the bottom of the support column 9.

[0021] Reference Figure 1 - Figure 4A servo motor 11 is installed at one end of the fixed tube 2. The output shaft of the servo motor 11 passes through the interior of the fixed tube 2 and is fitted with a first bevel gear 12. A first threaded rod 13 is installed between the bottom inner side of the fixed tube 2 and the top inner side of the support tube 3. A second bevel gear 14 is installed at the bottom end of the outer ring surface of the first threaded rod 13. The first bevel gear 12 and the second bevel gear 14 mesh with each other. The output shaft of the servo motor 11 drives the first bevel gear 12 to rotate. Since the first bevel gear 12 and the second bevel gear 14 mesh with each other, the second bevel gear 14 will rotate accordingly, thereby driving the first threaded rod 13 to rotate. A movable ring 15 is installed on the outer ring surface of the first threaded rod 13. Slide grooves 16 are symmetrically opened at both ends of the movable tube 4. The two ends of the movable ring 15 are located in the two slide grooves 16. Inside the 6, a guide post 17 is installed. One end of the guide post 17 is connected to the inner wall of the movable tube 4. When the first threaded rod 13 rotates, the movable ring 15 moves up and down with the rotation of the first threaded rod 13. The guide post 17 is installed on the movable ring 15 and located in the slide groove 16 of the movable tube 4. When the movable ring 15 moves, the guide post 17 slides in the slide groove 16 to guide and limit, ensuring that the movable ring 15 can only move linearly along the axial direction of the first threaded rod 13. Through the cooperation of the guide post 17 and the slide groove 16, the movement of the movable ring 15 is transmitted to the movable tube 4, so that the movable tube 4 can rise or fall smoothly and accurately, avoiding swaying or deviation, improving the stability of the device, and realizing flexible adjustment of the height of the support plate 5 to adapt to rehabilitation wheelchair auxiliary wheels of different sizes and installation requirements.

[0022] Reference Figure 1 - Figure 5 A fixing ring 18 is installed on the outside of the movable tube 4. A support plate 19 is installed on one end of the fixing ring 18. A second threaded rod 20 is installed on the support plate 19. The top of the second threaded rod 20 is rotatably connected to the bottom of the movable block 7. The bottom of the second threaded rod 20 passes through the support plate 19 and is connected to a handle 21. Rotating the handle 21 drives the second threaded rod 20 to rotate. Since the second threaded rod 20 is threadedly connected to the support plate 19 and its top is rotatably connected to the movable block 7, the movable block 7 will move up and down along the axis of the second threaded rod 20 during the rotation of the second threaded rod 20, thereby changing the height position of the movable block 7 relative to the support plate 5, so that the pressure block 10 can be aligned with the back of the rehabilitation wheelchair for pressing and fixing.

[0023] Reference Figure 5 A support frame 22 is installed at the end of the fixing ring 18 away from the support plate 19. A storage box 23 is installed on the outside of the support frame 22. The storage box 23 can be used to store tools, parts and other items required for installing the rehabilitation wheelchair auxiliary wheels, so that the operator can easily access them during the installation process, thereby improving the efficiency and convenience of the installation work.

[0024] Reference Figure 1 Two corners of the base 1 are equipped with directional wheels 24, and two corners of the base 1 away from the directional wheels 24 are equipped with foot brake casters 25. The directional wheels 24 can only roll in a fixed direction to provide stable linear movement support for the device, ensuring that the device can move in the predetermined direction during movement. The foot brake casters 25 can rotate freely in all directions, allowing operators to flexibly change the movement direction of the device and realize the steering operation of the device. When the device moves to the designated position, stepping on the foot brake caster 25 can lock the caster, fixing the device in the current position and preventing the device from moving during use, ensuring the smooth progress of the installation work and the stability of the device during use.

[0025] The implementation principle of the mounting device for auxiliary wheels of a rehabilitation wheelchair in this embodiment of the utility model is as follows: When using the device, firstly, the servo motor 11... Preferably, the HBS57 model is used. The servo motor 11 is electrically connected to an external power supply via a switch. The directional wheel 24 can only roll in a fixed direction, providing stable linear movement support for the device and ensuring that the device can move in the predetermined direction during movement. The foot brake universal wheel 25 can rotate freely in all directions, allowing the operator to flexibly change the movement direction of the device and achieve steering operation. When the device moves to the designated position, stepping on the foot brake on the universal wheel 25 can lock the universal wheel, fixing the device in the current position and preventing movement during use, ensuring smooth installation and stability of the device during use. The storage box 23 can be used to store tools, parts, and other items needed for installing the rehabilitation wheelchair auxiliary wheels, making it convenient for the operator to access them at any time during installation, improving the efficiency and convenience of the installation work. Turning the handle 21 drives the second threaded rod 20 to rotate. Since the second threaded rod 20 is threadedly connected to the support plate 19 and its top is rotatably connected to the movable block 7, the movable block 7 will move up and down along the axis of the second threaded rod 20 during the rotation of the second threaded rod 20, thereby changing the height position of the movable block 7 relative to the bearing plate 5. This allows the pressure block 10 to be aligned with the backrest of the rehabilitation wheelchair and pressed in place. The servo motor 11 is activated by a switch, and its output shaft drives the first bevel gear 12 to rotate. Since the first bevel gear 12 meshes with the second bevel gear 14, the second bevel gear 14 rotates accordingly, which in turn drives the first threaded rod 13 to rotate. As the first threaded rod 13 rotates, the movable ring 15 moves up and down with it. The guide post 17 is mounted on the movable ring 15 and located within the groove 16 of the movable tube 4. When the movable ring 15 moves, the guide post 17 moves within the groove... The inner sliding mechanism 16 serves as a guide and limiter, ensuring that the movable ring 15 can only move linearly along the axial direction of the first threaded rod 13. Furthermore, the movement of the movable ring 15 is transmitted to the movable tube 4 through the cooperation of the guide post 17 and the sliding groove 16, allowing the movable tube 4 to rise or fall smoothly and accurately, preventing swaying or deviation, improving the stability of the device, and enabling flexible adjustment of the height of the bearing plate 5 to accommodate rehabilitation wheelchair auxiliary wheels of different sizes and installation requirements. This makes operation convenient and more practical. The thread opening angle of the outer threads of the first threaded rod 13 and the second threaded rod 20 is 20 degrees. The thread self-locking condition needs to meet the following formula: Self-locking condition = coefficient of friction * tan(helix angle) ≥ 1.

[0026] Finally, the following points should be noted: First, in the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly, and can be mechanical connection or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0027] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0029] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A mounting device for a rehabilitation wheelchair auxiliary wheel, comprising a base (1), characterized in that: A fixed tube (2) is installed on the top of the base (1), a support tube (3) is installed on the top of the fixed tube (2), a movable tube (4) is installed on the outside of the support tube (3), a bearing plate (5) is installed on the top of the movable tube (4), a fixed ear (6) is installed on one end of the bearing plate (5), a movable block (7) is installed on the fixed ear (6), a pressure plate (8) is installed on the top of the movable block (7), a number of support columns (9) are installed at equal intervals on both ends of the pressure plate (8), and a pressure block (10) is installed at the bottom of the support column (9).

2. The mounting device for auxiliary wheels of a rehabilitation wheelchair according to claim 1, characterized in that: A servo motor (11) is installed at one end of the fixed tube (2). The output shaft of the servo motor (11) passes through the inside of the fixed tube (2) and is fitted with a first bevel gear (12). A first threaded rod (13) is installed between the bottom inner side of the fixed tube (2) and the top inner side of the support tube (3). A second bevel gear (14) is installed at one end of the bottom outer ring of the first threaded rod (13). The first bevel gear (12) and the second bevel gear (14) mesh with each other.

3. The mounting device for auxiliary wheels of a rehabilitation wheelchair according to claim 2, characterized in that: A movable ring (15) is installed on the outer ring surface of the first threaded rod (13). Slide grooves (16) are symmetrically opened at both ends of the movable tube (4). Guide posts (17) are installed at both ends of the movable ring (15) and inside the two slide grooves (16). One end of the guide post (17) is connected to the inner wall of the movable tube (4).

4. The mounting device for auxiliary wheels of a rehabilitation wheelchair according to claim 1, characterized in that: A fixing ring (18) is installed on the outside of the movable tube (4). A support plate (19) is installed on one end of the fixing ring (18). A second threaded rod (20) is installed on the support plate (19). The top of the second threaded rod (20) is rotatably connected to the bottom of the movable block (7). The bottom of the second threaded rod (20) passes through the support plate (19) and is fitted with a throttle (21).

5. The mounting device for auxiliary wheels of a rehabilitation wheelchair according to claim 4, characterized in that: A support frame (22) is installed at the end of the fixed ring (18) away from the support plate (19), and a storage box (23) is installed on the outside of the support frame (22).

6. The mounting device for auxiliary wheels of a rehabilitation wheelchair according to claim 1, characterized in that: The base (1) has two corners at its bottom where a directional wheel (24) is installed, and two corners at its bottom away from the directional wheel (24) where a foot brake universal wheel (25) is installed.

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