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    • 9. 发明授权
    • Front wheel centering mechanism for wheelchairs
    • 轮椅前轮定心机构
    • US4709939A
    • 1987-12-01
    • US925967
    • 1986-11-03
    • Raymond Stewart
    • Raymond Stewart
    • A61G5/10B62M1/14
    • A61G5/10
    • A centering mechanism is provided for the front wheels of a wheelchair having pairs of front and rear wheels. The centering mechanism has particular applicability for racing wheelchairs, such as those used in marathon racing. Linkage is employed to form a parallelogram structure with hinged corners, upon which the front wheels of the wheelchair are mounted by means of stub axles. The linkage holds the front wheels mutually parallel to each other while the centering mechanism returns the front wheels to parallel alignment with the rear wheels upon release of a steering device.
    • 为具有成对的前轮和后轮的轮椅的前轮提供定心机构。 定心机构适用于赛车轮椅,如用于马拉松比赛的轮椅。 使用联动来形成具有铰接角的平行四边形结构,轮椅的前轮通过短轴安装在该平行四边形结构上。 联动装置使前轮相互平行,同时当转向装置释放时,定心机构使前轮返回到与后轮平行对准。