| 摘要 |
A sleeve (1) is welded onto a tube (2) into which is fitted another tube (3). The lock is constituted by two lugs (4a,4b) joined by a U-shaped leaf spring (5). In the locked position the two lugs are simultaneously engaged in holes (6a,6b) in the sleeve and in holes (7a,7b) in the tube (3). In order to unlock one presses simultaneously on the lugs to disengage them from the sleeve holes which allows the tube (3) to be withdrawn. The lock remains in this tube held by its lugs which remain engaged in the tube holes.
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