| 摘要 |
The invention relates to a coupling comprising a receiving part ( 1 ) and a fixing part ( 10 ), which have a blocking assembly ( 15, 16, 17 ). If the insertion part has not been introduced into the receiving part ( 1 ) correctly, elements ( 15, 16, 17 ) of the blocking assembly that are configured on the receiving part ( 1 ) and on the fixing part ( 10 ) engage with one another in such a way that the fixing part ( 10 ) is prevented from being retracted from the extended position. Arms ( 11, 12 ) of the fixing part ( 10 ) are configured in such a way that when a retaining ring of the insertion part is positioned in the vicinity of said arms ( 11, 12 ), the engagement of the elements ( 15, 16, 17 ) of the blocking assembly is released and the fixing part ( 10 ) can be displaced into the retracted position to engage behind the retaining ring by means of the retraction section. This permits an efficient mounting operation.
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