Electrically propelled wheelchair capable of walking up and down steps and stairs and running on flat roads

Abstract

The invention provides an electrically propelled wheelchair capable of walking up and down steps and stairs and running on flat roads, and belongs to the technical field of electrically propelled wheelchairs. The electrically propelled wheelchair comprises a frame, a front wheel A, a front wheel a, a back wheel B, a back wheel b, a seat, a foot pedal and a remote control rod on the seat, and a battery group, and is characterized in that the front wheel A, the front wheel a, the back wheel B and the back wheel b are respectively and independently driven by a front hub motor A, a front hub motor a, a back hub motor B and a back hub motor b; a wheel unfolding and folding mechanism capable of increasing front and back intervals between the front wheel A and the front wheel a and between the back wheel B and the back wheel b is arranged on the frame; and a seat level automatic adjustment mechanism capable of automatically adjusting the seat level position is arranged between the frame and the seat. The electrically propelled wheelchair can walk up and down the steps and stairs and also can run on the flat roads, the size of the electrically propelled wheelchair provided by the present invention is similar to the size of the existing electrically propelled wheelchair running on the flat roadways, the structure of the electrically propelled wheelchair provided by the present invention is simpler than the structure of the existing electrically propelled wheelchair capable of walking up and down steps and stairs and running on the flat roadways, the electrically propelled wheelchair provided by the present invention is safe and reliable when walking up and down the steps and stairs, and operations are convenient.

Description

technical field [0001] The invention belongs to the technical field of electric wheelchairs, and in particular relates to an electric wheelchair capable of climbing steps and stairs. Background technique [0002] With the increase of the elderly and the disabled, the demand for electric wheelchairs is increasing, and the requirements for their functions are also increasing. The elderly and the disabled in multi-storey hope that the electric wheelchair can also go up stairs except that it can run on flat ground. For this reason, people have proposed many technical schemes of electric wheelchairs that can go up stairs, such as the announcement number: CN201211285 "electric wheelchair stair climbing vehicle", announcement number: CN201101645 "multifunctional safety electric stair climbing chair", publication number: CN104000696A "climbing wheelchair" Stair obstacle-crossing electric wheelchair", notice number: CN204744700U "electric stair climbing wheelchair", notice number: C...

AI Technical Summary

Problems solved by technology

Notice number: CN102309381A "A self-balancing electric wheelchair that can go up and down stairs and walk on flat ground" adopts three symmetrical hydraulic arms that can be retracted and rotated on both sides of the two wheels to go upstairs, and its safety and reliability are not good

Announcement number: CN2012-08-08 "self-service electric wheelchair that can go up and down stairs", announcement number: CN201179156 "an electric wheelchair that can automatically go up and down stairs" although it can run up and down stairs peacefully, but the structure is complicated and the whole vehicle is heavy. complicated operation

Notice number: CN201492596U "A dual-purpose electric wheelchair that can walk up and down stairs and on flat roads". When going up and down stairs, the fan-shaped board needs to be removed, and when walking on flat roads, the fan-shaped board needs to be installed, which is very inconvenient to use and operate

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