| 摘要 |
The article comprises a catch (6) connected to a tubular barrel (4) adapted to receive said threaded rod in its cavity, this catch (6) assuming, in the absence of stress, a rest position in which it has a wedge (12A) projecting inside said barrel (4), said wedge having a first inclined face (14) which faces the inlet opening (13) in the barrel and is inclined theretowards and towards the outside, and having a second face (15) which is opposed to the first and is inclined in the opposite direction from the inlet opening (13) towards the outside, said catch (6) being adapted to tilt resiliently towards the outside when a force normal to said first inclined face (14) is applied thereto and to tilt resiliently inwards when a force normal to the second inclined face (15) is applied thereto. The article is used, when of plastics material, with a threaded metal rod.
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