| 摘要 |
An upholstery button includes a collet, an anchor, and a lock washer. A seat or cushion cover is securely clamped between the head of the collet and the lock washer. The lock washer is locked in position without the action of any other clamping elements by the cooperation of the lock washer and ribs formed on the shank of the collet. The resulting connection reduces the possibility of an occupant's body catching on the button and provides a watertight connection between the cover and the button, even upon failure of the anchor. Also disclosed is a process of connecting the upholstery button to the seat.
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