| 摘要 |
PURPOSE:To retain frictional force at a constant level over a long period by forming a transfer body into an axial section regular polygon, butting respective friction members of the same pressure receiving area respectively against its respective surfaces under the same pressure. CONSTITUTION:A transfer body 3 is moved in an arrow A35 direction by elongating a piezoelectric element rapidly enough to overcome static frictional force that is between this and a push-pressing member 11, and gives impact to a transferred body through a striking member 35. In this instance, the transfer body 3 is formed into an axial section regular polygon, and provided in a lozenge shape. Friction members 8a, 8b, 8c, 8d are provided on the respective surfaces 3a, 3b, 3c, 3d of the transfer body 3. At the time if transfer body 3 slide, each of the friction members 8a-8d has the same pressure receiving area, and the same frictional force is generated, so the transfer body 3 slides straightly while being guided by the friction members 8a-8d. |
