| 摘要 |
A device for holding a piece in a bore comprises a cylindrical sleeve constructed to be inserted into the bore and held therein by engagement of its outer surface with an inner surface of the bore, and a series of fins extending longitudinally of an inner surface of the sleeve and projecting inwardly from the inner surface of the sleeve, the fins being spaced from each other circumferentially of the sleeve with tips disposed to engage an outer surface of a piece inserted into the sleeve. The sleeve and the fins are integrally formed of resilient flexible plastic, and the fins are skewed in a same circumferential direction relative to radial planes of the sleeve. The flexibility of the fins is such that the fins can be readily deflected when engaged by an inserted piece. |
