| 摘要 |
<p>A fastening device comprising a main portion having a base end portion and a distal end portion wherein its base end is attached to a head intended to be in contact with a rim at the outer side of an aperture when the fastening device is located in the aperture. The main portion is provided with guiding elements in order to guide the fastening device when inserted into the aperture and resilient elements which during insertion will be pressed inwards in order to at a later stage, when the resilient elements have passed the rim of the aperture, resiliently move back and thus provide a locking of the fastening device by being in contact with the rim on the inside of the aperture. The guiding element is provided with at least three vanes which are attached at its bases to the head such that they are located at an essentially equidistant spacing from the centre point. The resilient elements are made up by segments which only are attached to the fastening device along one side of the segments to the vanes such that they are protruding from the vanes and extend in a direction towards an adjacent vane.</p> |
