| 摘要 |
<p>The invention relates to an actuating device (1) for displacing a control device (3), which is subjected to the action of force counter to the direction of displacement (2). Said actuating device comprises an actuating element, which, inside a device housing (4), can be axially displaced in a direction of displacement by a turning spindle (5) of an advancing device (6). The turning spindle is connected in a rotationally fixed manner to a turning sleeve (8), which is rotatably mounted in the device housing (4) and which surrounds the turning spindle. Said turning sleeve is fixed, in relation to an annular flange (9) that is connected to the device housing in a rotationally fixed manner, counter to an advance turning direction (11) of the turning spindle by means of a spiral spring (10). An emergency disengagement device for resetting the actuating element counter to the direction of displacement is assigned to the spiral spring. The aim of the invention is to improve the actuating device by providing it with a compact and simple design and, at the same time, by enabling the winding of the spiral spring to be easily and precisely adjusted with regard to the torsional strength of the connection of the turning sleeve and the annular flange. To this end, the emergency disengagement device comprises a tension sleeve (13) for the spiral spring that is detachably held in a tensioning position. Said tension sleeve can be torsioned between a tensioning position and a final tensioning position and is subjected to the action of force toward its final tensioning position.</p> |
