Wheelchair with stair climbing function
By introducing angle adjustment and lifting mechanisms into the wheelchair, combined with the track assembly, the existing wheelchair has solved the problem of difficulty in moving on uneven grounds and insufficient safety in climbing stairs, and the function of flexible adjustment and climbing stairs is realized, improving the comfort of use Sex and safety.
Patent Information
- Application Number
- CN202420844176.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The existing wheelchairs are difficult to move on uneven grounds and the seat height is fixed and cannot be adjusted, which leads to uncomfortable use; and they cannot effectively climb the stairs, which can easily lead to unstable center of gravity and overturning.
A wheelchair with an angle adjustment mechanism and a lifting mechanism is designed. By adjusting the motor drive worm and bidirectional screw, the angle and height adjustment of the wheelchair is realized, and a track assembly is equipped for easy climbing.
The flexible adjustment and climbing function of the wheelchair is realized, improving the comfort and safety of use, and avoiding the risk of fatigue and overturning.
Smart Images
Figure CN222238038U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wheelchairs, in particular to a wheelchair with a stair climbing function. Background Art
[0002] With the aging population and the increase in the number of disabled people and the continuous development of technology, the design and function of wheelchairs are also constantly improving, making the lives of disabled people more convenient and comfortable. However, there are still a large number of ordinary wheelchairs on the market, which are difficult to move on uneven ground, and the seat height is usually fixed and cannot be adjusted according to the user's height.
[0003] However, the prior art still has the following problems:
[0004] Firstly, when the wheelchairs in the prior art are used by disabled people, most of them cannot be adjusted well, which causes the disabled people to easily become tired or uncomfortable when using the wheelchairs, thus resulting in poor practicality of the wheelchairs.
[0005] Secondly, when the wheelchairs in the prior art are used by disabled people, most of them cannot climb stairs well, which causes the wheelchair to easily become unstable and fall over when the disabled people climb stairs, which makes the wheelchair prone to danger when climbing stairs.
[0006] In view of the above problems, the inventor proposes a wheelchair with stair climbing function to solve the above problems. Utility Model Content
[0007] In order to solve the problem that most wheelchairs cannot be adjusted well and most wheelchairs cannot climb stairs well; the purpose of the utility model is to provide a wheelchair with a stair climbing function.
[0008] To solve the above technical problems, the utility model adopts the following technical solutions: a wheelchair with a stair climbing function, comprising a wheelchair body, a lower end of the wheelchair body is fixedly provided with an angle adjustment mechanism, the angle adjustment mechanism is used to adjust the angle of the wheelchair, a lower end of the angle adjustment mechanism is fixedly provided with a lifting mechanism, the lifting mechanism is used to adjust the height of the wheelchair, a track assembly is fixedly provided at the lower end of the lifting mechanism, the angle adjustment mechanism comprises a support, one side of the support is fixedly provided with an adjusting motor, the output end of the adjusting motor is provided with a worm, the outer surface of the worm is meshedly connected with a worm wheel, a rear fixing knob and a front fixing knob are respectively provided on both sides of the support, a slide groove is provided at the upper end of the support, and the slide groove is engaged with the lower end of the wheelchair body, so that it can be easily fixed under the wheelchair, a bolt is threadedly inserted into the outer surface of the worm, and the bolt is used in conjunction with the output end of the adjusting motor, and the inner surface of the support is rotatably fitted with the outer surface of the worm.
[0009] Preferably, the lifting mechanism includes a lifting motor, a bidirectional screw is fixedly provided at the output end of the lifting motor, two connecting plates are provided on the outer surface of the bidirectional screw, two support arms are rotatably provided on both sides of the two connecting plates, one side of four of the support arms is rotatably connected to a rocking seat, and one side of another four of the support arms is rotatably connected to a base, two screws are rotatably inserted on one side of the eight support arms, four rotating connecting holes are provided at the upper end of the rocking seat, and the four rotating connecting holes are used in conjunction with the worm gear, four track connecting holes are provided at the upper end of the base, and the four track connecting holes are used in conjunction with the track assembly, and the inner surfaces of the two connecting plates are respectively fitted with different threads of the bidirectional screw.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] 1. The utility model uses an angle adjustment mechanism. Under the action of the adjustment motor, the adjustment motor on one side of the starting support can drive the worm to rotate through the bolt, so that the worm can rotate on the outer surface of the worm wheel, that is, the angle of the wheelchair can be adjusted. The wheelchair can be better fixed to the angle adjustment mechanism through the slide groove and the rear fixing knob and the front fixing knob, so that the wheelchair can be well adjusted;
[0012] 2. The utility model uses a lifting mechanism. Under the action of the lifting motor, starting the lifting motor can drive the bidirectional screw rod to rotate. The bidirectional screw rod and the connecting plate are matched through threads, so that the two connecting plates gradually approach each other. Under the action of the support arm and the base, the rocker seat will gradually rise, thereby driving the wheelchair to rise. The support arm can be better limited by the screw rod, the rocker can be fixed to the worm gear through the rotating connecting hole, and the base can be fixed to the track assembly through the track connecting hole, so that the wheelchair can climb stairs well. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 It is a schematic diagram of the structure of the utility model.
[0015] Figure 2 It is a cross-sectional schematic diagram of the angle adjustment mechanism of the utility model.
[0016] Figure 3 It is a schematic diagram of the lifting mechanism of the utility model.
[0017] In the figure: 1. wheelchair body; 3. angle adjustment mechanism; 4. lifting mechanism; 5. track assembly; 31. rear fixing knob; 32. slide groove; 33. support; 34. front fixing knob; 35. worm; 36. bolt; 37. adjustment motor; 38. worm gear; 41. lifting motor; 42. connecting plate; 43. screw; 44. rocking seat; 45. rotating connecting hole; 46. support arm; 47. bidirectional screw; 48. track connecting hole; 49. base. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] Embodiment 1: Figure 1-2 As shown, the utility model provides a wheelchair with a stair climbing function, including a wheelchair body 1, an angle adjustment mechanism 3 is fixedly provided at the lower end of the wheelchair body 1, a lifting mechanism 4 is fixedly provided at the lower end of the angle adjustment mechanism 3, a track assembly 5 is fixedly provided at the lower end of the lifting mechanism 4, the angle adjustment mechanism 3 includes a support 33, an adjusting motor 37 is fixedly provided on one side of the support 33, a worm 35 is provided at the output end of the adjusting motor 37, a worm gear 38 is meshedly connected to the outer surface of the worm gear 35, and a rear fixing knob 31 and a front fixing knob 34 are respectively provided on both sides of the support 33. Through the angle adjustment mechanism 3, under the action of the adjusting motor 37, the adjusting motor 37 on one side of the starting support 33 can drive the worm gear 35 to rotate through the bolt 36, so that the worm gear 35 can rotate on the outer surface of the worm gear 38, that is, the angle of the wheelchair can be adjusted, and the wheelchair can be better fixed to the angle adjustment mechanism 3 through the slide groove 32 and the rear fixing knob 31 and the front fixing knob 34, so as to achieve the purpose that the wheelchair can be well adjusted.
[0020] A slide groove 32 is formed at the upper end of the support 33 , and the slide groove 32 is engaged with the lower end of the wheelchair body 1 .
[0021] By adopting the above technical solution, the wheelchair body 1 can be better fixed through the slide groove 32.
[0022] A bolt 36 is threadedly inserted into the outer surface of the worm 35 , and the bolt 36 is used in conjunction with the output end of the regulating motor 37 .
[0023] By adopting the above technical solution, the output end of the adjusting motor 37 and the worm 35 can be better fixed by the bolt 36 .
[0024] The inner surface of the support 33 is rotationally fitted with the outer surface of the worm 35 .
[0025] By adopting the above technical solution, the worm 35 can rotate on the inner surface of the support 33 .
[0026] Embodiment 2: Figure 3 As shown, the lifting mechanism 4 includes a lifting motor 41, and a bidirectional screw rod 47 is fixedly provided at the output end of the lifting motor 41. Two connecting plates 42 are provided on the outer surface of the bidirectional screw rod 47. Two support arms 46 are rotatably provided on both sides of the two connecting plates 42, wherein one side of the four support arms 46 is rotatably connected to a rocking seat 44, and one side of the other four support arms 46 is rotatably connected to a base 49, and two screw rods 43 are rotatably inserted on one side of the eight support arms 46. Through the lifting mechanism 4, under the action of the lifting motor 41, starting the lifting motor 41 can drive the bidirectional screw rod 47 to rotate, and the bidirectional screw rod 47 and the connecting plate 42 are threadedly matched, so that the two connecting plates 42 gradually approach each other, and under the action of the support arm 46 and the base 49, the rocking seat 44 will gradually rise, thereby driving the wheelchair to rise, and the support arm 46 can be better limited by the screw rod 43, and the rocking seat 44 can be fixed to the worm gear 38 through the rotating connecting hole 45, and the base 49 can be fixed to the track assembly 5 through the track connecting hole 48, so that the wheelchair can climb stairs well.
[0027] By adopting the above technical solution, the wheelchair can climb stairs well.
[0028] Four rotation connection holes 45 are formed at the upper end of the rocking seat 44 , and the four rotation connection holes 45 are used in conjunction with the worm gear 38 .
[0029] By adopting the above technical solution, the worm wheel 38 can be fixed to the rocking seat 44 through the rotating connecting hole 45 .
[0030] Four crawler track connection holes 48 are formed at the upper end of the base 49 , and the four crawler track connection holes 48 are used in conjunction with the crawler track assembly 5 .
[0031] By adopting the above technical solution, the base 49 can be fixed to the track assembly 5 through the track connecting hole 48.
[0032] The inner surfaces of the two connecting plates 42 are respectively fitted with different threads of the bidirectional screw rod 47 .
[0033] By adopting the above technical solution, the connecting plate 42 can move on the outer surface of the bidirectional screw rod 47 through the bidirectional screw rod 47 .
[0034] Working principle: Through the angle adjustment mechanism 3, under the action of the adjustment motor 37, the adjustment motor 37 on one side of the starting support 33 can drive the worm 35 to rotate through the bolt 36, so that the worm 35 can rotate on the outer surface of the worm wheel 38, that is, the angle of the wheelchair can be adjusted. The wheelchair can be better fixed to the angle adjustment mechanism 3 through the slide groove 32 and the rear fixing knob 31 and the front fixing knob 34, so as to achieve the purpose of the wheelchair being well adjusted. Through the lifting mechanism 4, under the action of the lifting motor 41, the starting lifting motor 41 can drive the bidirectional screw rod 47 to rotate. The bidirectional screw rod 47 and the connecting plate 42 are threadedly matched, so that the two connecting plates 42 gradually approach each other. Under the action of the support arm 46 and the base 49, the rocking seat 44 will gradually rise, thereby driving the wheelchair to rise. The support arm 46 can be better limited by the screw rod 43, and the rocking seat 44 can be fixed to the worm wheel 38 through the rotating connecting hole 45. The base 49 can be fixed to the track assembly 5 through the track connecting hole 48, so as to achieve the purpose of the wheelchair being well able to climb stairs.
[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A wheelchair with stair climbing function, comprising a wheelchair body (1), characterized in that: An angle adjustment mechanism (3) is fixedly provided at the lower end of the wheelchair body (1), a lifting mechanism (4) is fixedly provided at the lower end of the angle adjustment mechanism (3), and a track assembly (5) is fixedly provided at the lower end of the lifting mechanism (4); The angle adjustment mechanism (3) comprises a support (33), an adjustment motor (37) is fixedly provided on one side of the support (33), a worm (35) is provided at the output end of the adjustment motor (37), an outer surface of the worm (35) is meshingly connected with a worm wheel (38), and a rear fixing knob (31) and a front fixing knob (34) are respectively provided on both sides of the support (33).
2. A wheelchair with stair climbing function as claimed in claim 1, characterized in that: The lifting mechanism (4) comprises a lifting motor (41), the output end of the lifting motor (41) is fixedly provided with a bidirectional screw rod (47), the outer surface of the bidirectional screw rod (47) is provided with two connecting plates (42), and two supporting arms (46) are rotatably provided on both sides of the two connecting plates (42), wherein one side of four supporting arms (46) are rotatably connected to a rocking seat (44), and one side of another four supporting arms (46) are rotatably connected to a base (49), and one side of the eight supporting arms (46) are rotatably inserted with two screw rods (43).
3. A wheelchair with stair climbing function as claimed in claim 1, characterized in that: The upper end of the support (33) is provided with a slide groove (32), and the slide groove (32) is engaged with the lower end of the wheelchair body (1).
4. A wheelchair with stair climbing function as claimed in claim 1, characterized in that: The outer surface of the worm (35) is threadedly inserted with a bolt (36), and the bolt (36) is used in conjunction with the output end of the regulating motor (37).
5. The wheelchair with stair climbing function as claimed in claim 1, characterized in that: The inner surface of the support (33) is rotationally fitted with the outer surface of the worm (35).
6. A wheelchair with stair climbing function as claimed in claim 2, characterized in that: The upper end of the rocking seat (44) is provided with four rotation connection holes (45), and the four rotation connection holes (45) are used in conjunction with the worm gear (38).
7. A wheelchair with stair climbing function as claimed in claim 2, characterized in that: The upper end of the base (49) is provided with four crawler track connection holes (48), and the four crawler track connection holes (48) are used in conjunction with the crawler track assembly (5).
8. A wheelchair with stair climbing function as claimed in claim 2, characterized in that: The inner surfaces of the two connecting plates (42) are respectively fitted with different threads of the bidirectional screw rod (47).