JPH03130336U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of the toggle crank to which the present invention is applied in the locked state (an enlarged cross-sectional view of Fig. 5), Fig. 2 is a longitudinal sectional view of the toggle crank in the released state, and Fig. 3 is a longitudinal sectional view of the toggle crank in the retracted state. , FIG. 4 is an overall side view, and FIG. 5 is an overall plan view. 1...Base, 3...Base bracket, 5...Workpiece, 6...Hook receiver, 10
... Support shaft, 11 ... Handle lever, 12 ... Hook, 15 ... Connection link, 25 ... Guide groove,
26...Guide pin.

Claims (1)

[Scope of utility model registration request] A handle lever is rotatably supported on a base bracket via a support shaft, a rear end of a connecting link is pivotally connected to an intermediate portion of the handle lever, a hook is pivotally connected to a front end of the connecting link, The handle lever is rotatable in at least three stages from the lock position to the release position and the retracted position, and a guide groove having a constant stroke in the workpiece tightening direction is formed on one of the hook or the bracket, and the guide groove is formed on the other side. When the handle lever is rotated from the lock position to the release position, the hook is guided by the guide pin and moves linearly in the opposite direction to the tightening direction to release the lock state and release from the release position. A toggle clamp characterized in that when the hook is rotated to the retracted position, the edge of the guide groove comes into contact with the guide pin, and the hook rotates in the direction away from the workpiece using this as a rotation fulcrum.