Telescopic variable-angle stair climbing wheelchair

Abstract

The invention discloses a telescopic variable-angle stair climbing wheelchair, which comprises: a motor, crawler wheels, a level road driving wheel, a first seat balance push rod, a crawler wheel push rod, a level road driving wheel push rod, a seat push rod, a second seat balance push rod, a seat, a main support telescopic push rod, a battery, a level road driven wheel, a level road driven wheel push rod and a main support. The wheelchair is simple and convenient to produce, wherein by adopting the four-wheel-drive four-track driving mode, the speed of going upstairs and downstairs can be more effectively increased on the premise that safety is guaranteed. Due to the scalability and angle variability of the crawler wheels and the connection and rotation characteristics of the seat, the wheelchair is more reasonable and stable in structure, more complete in safety performance and higher in safety coefficient, the front-up and front-down advancing mode is adopted, operation is convenient, and the visual safety sense of a passenger is higher. The wheelchair has the characteristic of simple operation, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a telescopic variable-angle stair climbing wheelchair, in particular to a four-wheel drive and four-foot telescopic variable-angle stair climbing 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 disadvantage of this wheelc...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of this wheelchair is that if you want to go up and down the stairs smoothly, you need a healthy person to be responsible for the operation, so that when you go up to the last step or go down the first step, the operator is manually responsible for the smooth transition of the seat angle.

As a result, the height of the front end of the chair from the steps and the ground increases, the legs of the occupant are suspended in the air, and the seat is only supported by the telescopic rod, and the shaking between the steps greatly increases the occupant's sense of insecurity

Up and down steps cannot be operated in direction; the power device has a single function, and the control is too simple, etc.

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