Patent ID: 7066459

Claim:
Toggle lever clamping device, comprising: a clamping head and a drive unit connected in the axial direction to the clamping head which drive unit drives a rod back and forth in the longitudinal direction of the rod which is coupled to a toggle joint system by a linkage element, the toggle joint system driving a clamping arm pivotably back and forth, and the rod being connected to the linkage element by a thread so as to be longitudinally adjustable in both directions, wherein a) the rod which is provided on its end section facing the toggle joint system with an external thread is screwed into a hole of the linkage element, which hole is provided with an internal thread; b) the rod is rotatable in both directions about the longitudinal axis of the rod through a hole in a base cover at the end opposite the clamping head for the purpose of axially adjusting the rod; c) a guide plate is located on the rod, which guide plate engages diametrically opposing projections in guide grooves of the clamping head which guide guide rollers of a bolt in the longitudinal direction of the clamping head; d) a free space is located in the end section facing the drive unit, the extensions of which free space measured perpendicularly to the longitudinal axis of the rod are greater than the transverse dimensions of the guide plate measured in this direction.