| 摘要 |
At least one locking element (22,24) is provided for form-fittingly locking a tubular connection part (14,15) of the workpiece. The locking element is a spring-loaded latch which automatically latches to hold the connection part when inserted into a receptacle (18). A release element (54) disengages when the latch is operated and displaces the connection part in the receptacle.
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