| 摘要 |
A mechanically actuated brake or a mechanically actuated clutch comprises a lever block (24) installed between a supporting member (22) and a first driving part (6), a voussoir (21) installed between the supporting member (22) and the lever block (24). Abutting against the supporting member (22), the voussoir (21) is connecting with an operating device and is moved by the operating device which is equipped with a restoring spring (11, 35) for resetting the voussoir (21) while the brake is relieved or the clutch is jointed. There are three force-bearing points (A, B, C) on the lever block (24) which may swing around the second force-bearing point (B) under the coition of the voussoir (21). When the brake is braked or the clutch is joined, the first force-bearing point (A) and the third force-bearing point (C) respectively are situated on the two sides of the straight line which passes through the second force-bearing point (B) and extends along relatively moving orientation of the first driving part (6) and a second driving part (1). <IMAGE> |
