| 摘要 |
1. A rotatable fixing device with a pin (11b), comprising at least two parts (1b, 2b, 4b) joined to one another, at least one portion of the pin (11b, 11e, 35, 44, 51, 59a, 59b) being held firmly in a bore (7b, 8b, 20, 21, 22, 36, 45, 63a, 63b,) in a first part (16, 26, A, 32, 46, 52, 53, 64a, 64b) and another portion of the pin passing, with play, through a passage (9b, 28, 29, 65) in at least one second part (4b, B, 34, 54, 66), characterized in that the pin (11b, 11e, 35, 44, 51, 59a, 59b) has at least one circular peripheral groove (11c, 47, 60a, 61a, 60b, 61b) of virtually rectangular section, in which a continuous ring (11d, 11f, 41, 48, 55, 56, 62a, 62b), made of an elastically deformable and virtually incompressible material, is arranged, the dimensions of the ring and groove in cross-section being such that, in the free state, the ring projects beyond the groove, whereas, in the working position of the pin, the ring is deformed and pressed into the groove by the pressure of the bore in the first of the said parts, in which it interacts with this bore, by friction, ot prevent any accidental relative displacement between the pin and this first part. |
