Electric wheelchair with obstacle crossing function

Abstract

The invention relates to an electric wheelchair with an obstacle crossing function. The electric wheelchair comprises a chassis, an ejecting mechanism and a foldable seat. The ejecting mechanism is used for adjusting the center-of-gravity position of the foldable seat. The foldable seat is detachably installed on the chassis, and one end of the foldable seat is equipped with a stretching-out supporting wheel assembly used as a first supporting wheel of the wheelchair. The chassis comprises a driving wheel assembly, a box, a second stretching-out mechanism, a third stretching-out mechanism anda supporting wheel assembly, the second stretching-out mechanism is installed at one end of the box, and the third stretching-out mechanism is installed at the other end of the box. The electric wheelchair has the beneficial effects that an alternate three wheel group structure is composed of the stretching-out supporting wheel assembly, the driving wheel assembly and the supporting wheel assembly, when a user, especially the disabled having difficulties on the lower body, crosses an obstacle, and the center of gravity of the user does not change, namely, the user is prevented from going up and down. After the user crosses the obstacle or completes up and down stairs, the center of gravity of the wheelchair goes up and down, and the whole obstacle crossing and up and down stairs movement is completed.

Description

technical field [0001] The invention relates to the technical field of wheelchairs, in particular to an electric wheelchair with an obstacle-overpassing function. Background technique [0002] At present, the wheelchairs that can be seen in the Chinese market are divided into two categories: manual and electric. Among them, manual wheelchairs account for the majority of the market because of their low prices; traditional electric wheelchairs only add power sources and control units on the basis of manual wheelchairs. It is basically divided into three types: indoor type, outdoor type and road type. The functions are single and cannot fully meet the needs of the elderly and the disabled. [0003] At present, electric wheelchairs on the market include crawler type, planetary wheel type and tire type. Crawler-type electric wheelchairs basically do not have the folding function and are inconvenient to carry; tire-type and planetary-wheel electric wheelchairs can basically be fo...

AI Technical Summary

Problems solved by technology

Crawler-type electric wheelchairs basically do not have the folding function and are inconvenient to carry; tire-type and planetary-wheel electric wheelchairs can basically be folded, which solves the problem of inconvenient carrying; The stairs are not as stable and convenient as crawler wheelchairs

[0004] Regardless of whether it is a crawler-type electric wheelchair, a tire-type electric wheelchair, or a planetary-wheel electric wheelchair, when passing obstacles and going up and down stairs, there are situations where the user passes through obstacles and bumps and tilts when going up and down the stairs, causing certain inconvenience to the user. Difficulty, even causing personal harm

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