| 摘要 |
A motion transforming mechanism comprises a plate assembly constituted by rotation plates having a common rotation axis, a toothed rail having a parallel rail portion and a mid-longitudinal plane perpendicularly intersected by the common rotation axis and held in mesh with the rotation plates, a housing for housing the plate assembly and the toothed rail, and a rotation shaft supported by the housing and formed with cranked shaft portions respectively received in the rotation plates. The motion transforming mechanism further comprises distance regulating means for regulating the distance between the common rotation axis and the toothed rail. The toothed rail is formed with a toothed portion having a pitch plane perpendicularly intersected by the mid-longitudinal plane and a base portion integrally formed with the toothed portion and having a parallel rail portion in parallel with the mid-longitudinal plane and the pitch plane of the toothed rail.
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