Patent ID: 7770391

Claim:
A device for a bi-directional displacement of a connecting element, along a guide, which is reversibly movable between at least first and second positions along the guide, comprising: means for driving which is engageable with a means for displacing the connecting element in one direction while being subjected to a force along the guide and an actuator engaging the connecting element for displacing the connecting element in an opposite direction along the guide while subjected to a force and wherein the actuator is activated with a converter material; wherein the connecting element comprises a locking element for first and second fixed components, the locking element being positionable in locked and unlocked states, wherein in the unlocked state the connecting elements I connected with the first fixed component via the actuator and an energy accumulator and is positioned in the first position along the guide when assuming the unlocked state and is positioned along the guide in the second position when assuming the locked state and includes second means, which upon displacement into the second position, enters into a reversibly fixed engagement with the second fixed component; and wherein: the locking element has at least two segments that are movable radially to the guide; a wedge element and a housing part radially surrounding the wedge element; and upon displacement of the locking element into the second position, the at least two segments are radially driveable outward by the wedge element to cause the segments to form a clamping connection with a housing radially surrounding the segments.