| 摘要 |
<p>A buckle for a vehicle safety restraint, the buckle comprising a frame defining a passageway for receiving a tongue to be attached to the buckle, a latching member for engaging the tongue, the latching member being moveable between a tongue engaging position and a tongue disengaging position under action of a manually operable actuating member, an inertial member rotatably mounted substantially about its centre of gravity on the frame, the inertial member having an intermeshing means for co-operating with means on the actuating member for holding the actuating member against movement under high acceleration forces, the holding means inoperative on low acceleration manual actuation of the actuating member. The invention uses the property of a flywheel which enables it to be easily rotated at slow speeds, but is very hard to rotate if it is moving at high speed. Thus the force required to displace the actuating member (which is the buckle button) is proportional to the acceleration which the button experiences.</p> |
