Stand-assisting stair-climbing wheelchair

Abstract

The invention discloses a stand-assisting stair-climbing wheelchair, comprising a chair part, a switching mechanism and a stand-assisting mechanism, wherein the chair part is used to allow a user to sit; the switching mechanism is arranged below the chair and is used to switch between the wheel transmission and crawler transmission of the stand-assisting stair-climbing mechanism; and the stand-assisting mechanism is arranged on the lower side of the chair part and is used to assist a user to stand; and the switching mechanism of the stand-assisting stair-climbing wheelchair is a five-rod mechanism, is controlled by two linear motors, comprises eight movable mechanisms and eleven lower pairs and has two degrees of freedom. The stand-assisting stair-climbing wheelchair provided by the invention compensates the structural error of a four-rod mechanism with the five-rod mechanism, realizes the high-precision movement output or finishes more complicated movement rule to realize the switching between the wheel transmission and the crawler transmission. Meanwhile, the stand-assisting stair-climbing wheelchair assists the user to stand by the stand-assisting mechanism with a parallelogram structure, and realizes the functions of keeping the horizontal condition of the chair and adjusting the centre of the gravity of the chair when climbing stairs or getting over barriers.

Description

technical field [0001] The invention relates to the technical field of machinery and control, in particular to a wheelchair for standing up and climbing stairs. Background technique [0002] Wheelchairs are an indispensable means of transportation for the elderly and infirm. But, traditional wheelchair just can't cross when encountering hurdle. Among them, going up and down stairs is the biggest obstacle for these people with disabilities. In 2000, in order to solve the problem of going up and down stairs in these houses, the country considered installing elevators for these houses, but due to various reasons, the plan was shelved. [0003] At present, the way abroad to solve the problem of wheelchair users crossing the stairs is to use the emergency evacuation transport equipment of the building - the stair climber, which is about to temporarily fix the wheelchair on the stair climber, so as to go up and down the stairs. Put it back to the original place after use, and t...

AI Technical Summary

Problems solved by technology

[0008] The present invention is aimed at the conventional stair-climbing wheelchairs in the prior art, which have poor adaptability to stairs, cannot meet the needs of users for comfort and reliability, and cannot achieve high-precision operation output or complete more complex movements. Defects such as regularity provide a wheelchair for climbing stairs

[0009] Another object of the present invention is to provide an auxiliary wheelchair for the defects of the prior art, such as the poor adaptability to stairs, the inability to meet the user's needs for comfort and reliability, and the user's sedentary discomfort. The steps of the auxiliary standing mechanism of the climbing stairs wheelchair

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