| 摘要 |
<p>Clamping means for a strap (68, 70), comprises a guide member (62) pivotally mounted on a base member (22) for angular movement about a first axis (60), and a clamping member (72) pivotally mounted on the base member (22) for angular movement about a second axis (54, 56) parallel to the first axis (60) and located at a greater radius from the second axis than the radius of the guide member (62) from the first axis. Resilient means biases the guide member (62) and the clamping member (72) into a rest position in which the strap (68, 70) is freely movable between the guide member (62) and clamping member (72). Coupling means (84, 86) are arranged so that angular movement of the guide member (62) against the bias of the resilient means towards the plane containing the two pivot axes causes corresponding angular movement of the clamping member (72), thereby wrapping the strap (68, 70) round both the clamping member (72) and the guide member (62).</p> |
