摘要:
A motion transforming mechanism comprises a rotation shaft (11) having a center axis (CA₁₁) and formed with at least three cranked shaft portions (11a, 11b and 11c) having respective eccentric axes (CA 11a , CA 11b and CA 11c ) in parallel relationship to one another and to the center axis (CA₁₁), the eccentric axes of the cranked shaft portions (11a, 11b and 11c) being displaced from and arranged equiangularly around the center axis (CA₁₁). The motion transforming mechanism further comprises a plate assembly (12) constituted by at least three rotation plates (13 to 15) having a plurality of teeth (13b, 14b and 15b) and formed with cranked through bores (13c, 14c and 15c), respectively. The cranked shaft portions (11a, 11b and 11) of the rotation shaft (11) are rotatably received in the cranked through bores (13c, 14c and 15c) of the rotation plates (13 to 15), respectively. The motion transforming mechanism further comprises an annular toothed rail (19) having a mid-circumferential plane (MP) perpendicularly intersected by the center axis (CA₁₁) of the rotation shaft (11) and having an inner surface configured to have a plurality of teeth (19b) held in mesh with the teeth (13b, 14b and 15b) of the rotation plates (13, 14 and 15). The rotational motion of the rotation shaft (11) causes each of the rotation plates (13 to 15) to be rotated with respect to the center axis (CA₁₁) of the rotation shaft (11) and being transformed into a relative curvilinear motion between the annular toothed rail (19) and the plate assembly (12).
摘要:
A motion transforming mechanism comprises a plate assembly 11 and a toothed rail 30. The plate assembly 11 is constituted by at least three rotation plates 12 to 14 having a common rotation axis RA and each having a plurality of teeth 12a, 13a and 14a, the rotation plates 12 to 14 being respectively formed with cranked through bores 12b, 13b and 14b. The toothed rail 30 is formed with a plurality of teeth 30a held in mesh with the teeth 12a, 13a and 14a of rotation plates 12 to 14. The motion transforming mechanism further comprises a drive motor assembly 40 constituted by a rotor unit 41 rotatably received in the cranked through bores 12b, 13b and 14b and a stator unit 45 accommodated in the rotor unit 41. The rotation plates 12 to 14 are rotated with respect to their common rotation axis RA by the rotation of the rotor unit 41 with respect to stator unit 45. The motion transforming mechanism thus constructed requires no external electric motor and accordingly is able to be more easily assembled with various systems.