| 摘要 |
An improved locking device is essentially characterized by the following features: at least two recessed sections extend radially outwards from the central axis and are arranged at regular angular intervals from one another, a setting member or rotary member is provided in the inside of the pot-like or housing-like fixed element; the rotary member comprises an actuation portion with a locking element which is axially offset in the direction of the base; the locking element has a structure provided with locking arms which project radially outwards, so that the thus designed locking element can be axially inserted through the recess.
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