Multifunctional wheelchair

Abstract

The invention relates to a multifunctional wheelchair. The wheelchair comprises a seat, a walking mechanism and a driving unit, wherein the seat comprises a deformable seat frame, an adjustable seat surface, a backrest and front and rear telescopic adjusting supporting rods; the deformable seat frame comprises an upper beam, a bottom beam, a front stand column and a rear stand column; the front stand column and the rear stand column are hinged to the upper beam and the bottom beam through connecting shafts; the walking mechanism comprises front and rear wheels, front and rear crawler belt assemblies and a flat ground walking mode self-locking device; the joint of the front and rear crawler belt assemblies coaxially rotates; the front telescopic adjusting supporting rod is connected betweenthe front stand column and the bottom beam; the rear telescopic adjusting supporting rod is connected between the upper beam and the rear crawler belt assembly; a mode conversion operation rod is connected to the adjoining position of the front stand column and the front and rear crawler belt assemblies; a seat surface angle stabilizing adjuster is connected between a mounting frame of the upperbeam and the rear crawler belt assembly; and the driving unit comprises a power unit, a variable speed transmission mechanism, a variable speed clutch mechanism and a mode conversion clutch. The wheelchair has the flat ground walking, stair climbing and cross-country abilities, is good in comfort and safety, enhances the indoor and outdoor independent action ability of people having difficulty inmoving, improves the life quality of people, and relieves the burden of personnel serving people.

Description

technical field [0001] The invention relates to a wheelchair, in particular to a multifunctional wheelchair. Background technique [0002] Existing wheelchairs include ordinary hand-push wheelchairs and electric wheelchairs that can walk on flat ground, electric wheelchairs / climbing machines that can climb stairs, and high-tech fully intelligently controlled wheelchairs that can drive on flat ground and go up stairs. The full track has certain complex terrain Off-road capable wheelchairs, etc. [0003] At present, the wheelchair / stair climbing mechanism with two functions of walking on level ground and climbing stairs on the market adopts a section of crawler chair bottom or chair rear installation, a telescopic rod to control mode conversion, and no automatic seat balance adjustment device. The biggest disadvantages of this wheelchair are: [0004] A. If you want to go up and down the stairs smoothly, you need a healthy person to be in charge of the operation, so that whe...

AI Technical Summary

Problems solved by technology

The biggest disadvantages of this wheelchair are:

[0010] B. These existing technologies require human operation for the transition from up and down to the last step, and some need to stop driving first, and then operate the transition mechanism, which increases the difficulty of operation and unsafe factors for disabled people, and cannot realize automatic stability transition

[0011] C. These existing technologies are all realized by the elasticity of the track and the design of the pattern for driving on the steps, lacking safety guarantees

Images