| 摘要 |
Motor (16) rotates a shaft (18) and an eccentric weight (46) is mounted on the shaft (18) for movement with same. The eccentric weight (46) is linked to a base weight (60) and transmits an oscillational motion along a dimension of the base weight. A torsion spring (98) fixed to the base weight (60) at a spacing from a counter weight (96) extends away from the base weight (60) and connects to a body (12) to impart an oscillational torsional motion thereto. <IMAGE> |
