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Single rotation shaft stairs clambing wheel chair

A stair-climbing wheelchair with a single-axis technology, which is applied to patient chairs or special transportation tools, vehicle ambulance, medical transportation, etc., can solve the problems of high price, high operator requirements, large structure, etc., and achieve light and convenient stair climbing , High degree of automation, easy to go upstairs

Inactive Publication Date: 2007-03-21
谢良喜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing star-shaped wheel-type stair-climbing wheelchairs all arrange the wheel sets at the front and back, and the structure is relatively large, and the front and rear wheel sets interfere with each other in the process of climbing stairs, and the stair climbing effect is relatively poor.
Recently, a kind of commercial intelligent stair-climbing wheelchair has appeared abroad, which uses high-tech control methods such as gyroscope and CPU, but has high requirements for the operator and is very expensive.

Method used

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  • Single rotation shaft stairs clambing wheel chair
  • Single rotation shaft stairs clambing wheel chair
  • Single rotation shaft stairs clambing wheel chair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: As shown in Figures 1 to 3, it includes a caster set 1, a star frame 2, a two-degree-of-freedom transmission mechanism 3, an energy and balance mechanism 4, a wheelchair shaft 5, a seat 6, and the like. The caster set is installed on the star frame, and the star frame can be three-sided, four-sided, five-sided or six-sided (Figure 2 and Figure 3 show a triangular star frame). The transmission mechanism adopts a two-degree-of-freedom differential gear train (Fig. 5). The driving gear 7 meshes with the driven wheel 9 through the idler wheel 8; both the idler wheel 8 and the driven wheel 9 are installed on the star frame 2. The driven wheel 9 and the caster are consolidated by the pin shaft, so the motion of the caster is consistent with the motion of the driven wheel 9 . The mechanism is a two-degree-of-freedom differential gear train, which can not only realize the self-rotation of the caster, but also realize the rotation of the star frame 2. On flat grou...

Embodiment 2

[0014] Embodiment 2: The main principle is the same as Embodiment 1, but the transmission mechanism adopts a two-degree-of-freedom sprocket drive (Fig. 6), and the driving sprocket 10 drives the driven wheel 13 to rotate through the chain 11. The driven wheel 13 is consolidated with the caster and installed on the star frame 2 . Similar to Embodiment 1, the star frame does not turn over on flat ground, but only the casters rotate, and the wheelchair advances; when encountering resistance such as stairs, the star frame turns over, and the wheelchair realizes climbing stairs.

Embodiment 3

[0015] Embodiment 3: The main principle is the same as that of Embodiment 1 and Embodiment 2, but adopts manpower to drive the driving wheel.

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Abstract

The single rotation shaft stairs climbing wheel chair includes caster wheel assemblies, star frames, a driving mechanism, an energy source and balance mechanism, a wheel chair rotation shaft, a seat, etc. The caster wheel assemblies are mounted onto the star frame; the star frame may have 3, 4, 5 or 6 sides; and the driving mechanism has two freedom degrees and may be driven with the caster wheel or the star frame. It features only one rotation shaft to drive two star frames for no interference during climbing stairs. The present invention has light weight, safety, automation, low cost and other features.

Description

technical field [0001] The invention relates to a wheelchair, which can run on level ground, climb over general obstacles and climb stairs. It belongs to the category of wheelchair vehicles. Background technique [0002] Wheelchairs are an indispensable means of transportation for the elderly, infirm and those with lower limb disabilities, but the stairs make wheelchairs very limited. At present, some patents or papers related to wheelchairs for climbing stairs have appeared in China, but commercial products have not yet been seen. These wheelchairs can be divided into two types: continuous type and intermittent type according to the movement mode of climbing stairs. Intermittent stair-climbing wheelchairs are generally slower, less safe, and inconvenient to operate. The continuous stair climbing wheelchair can be divided into star wheel mechanism and track wheel mechanism. The crawler-type stair-climbing wheelchair has relatively high transmi...

Claims

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Application Information

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IPC IPC(8): A61G5/06
Inventor 谢良喜
Owner 谢良喜
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