| 摘要 |
<p>A fastener element ( 7, 24, 30, 41, 50, 60 ) is adapted to be secured in a blind hole ( 12 ) formed in a first component ( 13 ) to be connected to a second component ( 14 ) generally provided with an aligned blind hole. The element is of generally cylindrical shape with an outer surface provided with a series of anchoring formations ( 10, 32, 43 ) following a generally helical path along at least a part of its length. The formations are configured to enable the element to be forcibly introduced, at least partially, without rotation thereof axially into a blind hole in said first component to anchor the element therein. The fastener element either has a shank permanently associated therewith ( 7 ) or one or more formations ( 34, 43, 45 ) for the operative retention of a cooperant end of a separate shank ( 36, 43 ). The shank has an engagement zone ( 9, 22, 23, 37, 42, 71 ) whereby rotation of the element can be effected about its axis to result in axial movement of the element relative to the hole to tighten a joint. The invention also provides components and a method of joining them using the fasteners.</p> |
