| 摘要 |
PURPOSE:To simplify the structure by providing a rotary inertia ring while screwing over a ball threaded shaft in a casing and providing a balance spring between said ring and casing then integrating the ball threaded section and brake mechanism. CONSTITUTION:Upon application of slow force onto the joint section 1, said force is transmitted to a ball threaded shaft 2 and through a ball 8 in ball thread mechanism to a rotary inertia ring 7. Said ring 7 is regulated with same setting force through a sleeve 12 of bearing 11 and balance spring 10 and made rotatable through clearances (da), (db). Consequently, the ring 7 will rotate together with the ball 8 to allow the axial displacement of ball threaded shaft 2. While upon application of relatively abrupt external force onto the joint section 1, rotation of ring 7 will not increase as the resistance increases thus to contact the side face section of ring 7 against the convex face section of cover 4. Consequently, rotation of ring 7 is blocked to provide vibration isolating function. |
