Wheelchair waist power assisting device with four rotating joint axes intersecting

Abstract

The invention relates to a wheelchair waist power assisting device (a device which is mounted on a wheelchair and provides power for the chest and the waist to drive a trunk to move) with four rotating joint axes intersected. The body power assisting device comprises a movable platform, four moving branch chains, four motor driving units and a base. A user realizes partial movement of the trunk byconnecting the chest with an upper platform and connecting the base with the hip. The wheel chair waist power assisting device is a 2T2R four-degree-of-freedom parallel mechanism, can achieve bendingand stretching movement, torsion movement and partial combined movement of the human body trunk, and can meet the rehabilitation movement requirements of part of SCI (spinal injury) patients and somedaily life requirements (independently clamping dishes, taking objects and the like) of part of cerebral palsy patients in a sitting posture state; the structure is relatively simple. Movement whichcan be achieved by the movable platform of the device conforms to the principle of human kinematics, so that the device can perform traction movement on the trunk more operably, and the rehabilitationquality and the life quality of part of patients can be improved.

Description

technical field [0001] The invention relates to a wheelchair lumbar booster (a device installed on a wheelchair to provide power to the thoracolumbar region to drive the trunk movement), in particular to a parallel mechanism for assisting rehabilitation training for patients with spinal cord injuries and daily activities for patients with cerebral palsy. Background technique [0002] For many people, sitting up independently does not require a second thought. However, for someone with impaired trunk motor control, sitting unaided can be a difficult balancing task. Many different population groups have difficulty with the balanced sitting task. The incidence rate of cerebral palsy was 3.1 per 1000 third graders. Of those affected, 32 percent had General Motor Function Classification System (GMFCS) class IV or V. They mainly use wheelchairs as the main means of transportation, but the situation of sitting inconvenience is more troublesome. Another group affected are patien...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a wheelchair lumbar booster device in which the axes of the four rotating joints meet, so as to solve the problem that the above-mentioned device does not support the torsional motion that requires a lot of exercise in daily life.

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