| 摘要 |
A fastening device, comprising:
- an elongate sleeve that at a first end is provided with a radially extending flange and that a second end is provided with a tip, the sleeve further being provided with a passage that axially extends therethrough, the passage comprising a first portion that extends from the first end towards the tip and which continues into a second portion of reduced diameter that extends through the tip to the second end,
- a screw, having a head and a shank extending therefrom, the shank being provided with a screw thread and having a diameter less than the second portion of the passage of the sleeve, and
- an intermediate element, screwably received on the screw thread of the screw and having a diameter larger than the diameter of the second portion of the passage of the sleeve, but smaller than the diameter of the first portion of the passage of the sleeve, such that the screw and the intermediate element as an assembly are receivable in the passage of the sleeve so that the intermediate element is axially slidably yet rotationally fixedly held in the first portion of the passage of the sleeve, while a portion of the shank axially slidably extends through the second portion of the passage.
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