| 摘要 |
A toggle lever clamping device for clamping a workpiece to a support frame includes a box-shaped head to which a clamping arm is pivoted to rotate between an open and a closed condition to release respectively to lock the workpiece; the clamping arm is operatively connected to an actuator by a toggle lever mechanism having a dead center condition beyond which the clamping arm is tightened against the workpiece. The toggle mechanism includes an elastically yieldable connection link which, upon reaching the dead center of the toggle lever mechanism is sequentially allowed to axially yield for a some degree and to deflect in a controlled mode by a confronting stop provided on the same clamping arm.
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