| 摘要 |
The invention relates to a locking device with a detent element (11) axially displaceable by means of an electromechanical drive (4) from an unlocking position into a locking position, and vice versa, in which drive part (8) rotatable by means of the electromechanical drive (4) and an axially guided driver (10) connected to the detent element (11), which driver is connected to the drive part (8) via a threaded drive (9), and in which the locking device (1; 1') comprises a securing element (24) which is prestressed by a spring (23) and which, to secure the detent element (11) in the unlocking position, engages by means of the spring (23) into a lateral recess or under a projection (25) of the driver (10) or of the detent element (11). To provide a compactly constructed locking device (1; 1') with a securing element (24) which is pivotable and/or displaceable for fixing the detent element (11) and can also be actuated in a simple way into its detaining position or into its releasing position even when the drive used for displacing the detent element is a drive with freewheel, the invention proposes that the distance between control cam (26) and securing element (24) be selected in such a way that, with the detent element (11) in the unlocking position, the control cam (26) is axially displaced with respect to the control contour and is therefore located outside the range of action of the control contour. Only when the electromechanical drive (4) is activated in order to displace the detent element (11) into its locking position does the drive part (8) with the control contour (16, 17) come into engagement with the control cam (26), so that the latter, and therefore also the securing element (24), are pivoted, the detent element (11) or the driver (10) is released, and the arrangement comprising drive part (8), driver (10) and detent element (11) is suddenly displaced into the locking position.
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