A wheel-leg composite wheelchair chassis mechanism

Abstract

The invention discloses a base plate mechanism of a composite wheel leg type wheelchair. The base plate mechanism of the composite wheel leg type wheelchair is characterized by mainly comprising a row wheel transmission mechanism, a front position and posture adjusting mechanism, a rear position and posture adjusting mechanism, a five-rod mechanism and a control system. The row wheel transmission mechanism mainly comprises a row wheel frame, an upper wheel gear, a row wheel, a transmission wheel, a lower wheel gear and a spindle. The front position and posture adjusting mechanism mainly comprises a supporting base, a front screw, a front direct current motor, a front screw nut, a base plate body, a front connecting rod, a front crank, a primary wheel gear and a secondary wheel gear. The rear position and posture adjusting mechanism mainly comprises a rear screw, a rear screw nut, a rear direct current motor, a connecting rod, a rear crank and a rear connecting rod. The five-rod mechanism comprises a base plate body, a front crank, a row wheel frame, a rear crank and a rear connecting rod. The control system mainly comprises a primary driving module, a secondary driving module, an input module and a timing module.

Description

technical field [0001] The invention relates to wheelchair technology, in particular to a wheel-leg composite wheelchair chassis mechanism. Background technique [0002] With the advent of an aging society and the increase in the number of disabled people, wheelchairs play an increasingly important role in the lives of the elderly and disabled people. Stairs that can be seen everywhere in life limit the use of ordinary wheelchairs. Therefore people have successively developed various mechanisms for going up and down stairs or stair climbing mechanisms (wheelchairs). If classified according to the form of the mechanism, it is mainly divided into a planetary wheel type, a crawler type, a leg-foot type, and a parallel four-bar mechanism. [0003] The planetary wheel type stair climbing mechanism has compact structure and flexible movement. Yuan Huaxiang and Liu Xiangxiang introduced the stair-climbing wheelchair IBOT developed by Johnson & Johnson in the "Innovative Design of...

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Problems solved by technology

Xiang Haichou, Wulan Muqi and others introduced in "Manual Stair Climbing Wheelchair" that the advantages of the parallel four-bar stair climbing mechanism are simple structure and low price. The degree is not high, and the safety is not very good (see "Chinese Journal of Rehabilitation Medicine", Volume 9, No. 2, P62-P66, 1999)

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