| 摘要 |
A coupling device (10) comprising two coupling members (16, 18) each having a base portion (24) and opposed coupling elements (26, 28) extending from the base portion (24). Each coupling element (26, 28) has a distal portion (30) and a body portion (32) between the base portion (24) and the distal portion (30) and the opposed coupling elements (26, 28) of each coupling member (16, 18) defining a throat (34) between the body portions (32) thereof which extends into an open mouth (36) between the distal portions (30) thereof which is narrower than the throat (34). The distal portion (30) of each coupling element (26, 28) has a catch member (38) on an internal part thereof defining with the opposed distal portion (30) the open mouth (36). The arrangement is such that either one of the coupling elements (26, 28) of each of the coupling members (16, 18) can be received in the open mouth (36) and throat (34) of the other of the coupling members when the coupling members are opposed to each other, but that the distal portion (30) of said one of the coupling elements of each of the coupling members cannot be withdrawn through the open mouth of the other of the coupling members without deforming one or both coupling members. |
