| 摘要 |
A plastic fastening element includes an insert portion 2 attachable in an aperture of a support. The insert portion has elastic wings 4 joined about the circumference of a rigid core 9 to extend in an axial direction relative to the support aperture. The wings 4 are designed in the shape of a triangle with the first triangle side 7 connected to core 9 of the insert piece 2, and the opposite outer triangle corner 8 defining the outer limit of a second and third triangle side 5 and 6 each of which extend from the triangle corner 8 to the core 9 of the insert piece 2. The second triangle side of each wing 4 ascends from the lower end of the core in spirally-wound form up to the respective triangle corner 8 and the third triangle side 6 of each wing 4 ascends in spirally-wound form from the respective triangle corner 8 to the core 9 of the insert portion 2.
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