| 摘要 |
PURPOSE: A buckle for seat belts and more particularly to that type of buckle usable with a buckle pretension or belt tightener, is provided. CONSTITUTION: A seat belt buckle(100) operable with a pretension connected thereto for moving the buckle a determinable distance to remove slack of the seat belt about an occupant, the buckle comprises: a frame(102), adapted to be connected to the pretension, defining a tongue receiving opening to receive a tongue(173) as the tongue is moved in a first direction, the frame having a first opening therein, and opposing frame sides(108a,b), each side including a latch plate slot(110) arranged generally perpendicular to the first direction and an arcuate slot(112), the arcuate slot(112) including a first portion generally parallel to the latch plate slots(110) and a second portion angled thereto, a latch plate(180), having end portions movable within the latch plate slots between a locked position in engagement with an opening within the tongue and with the first opening, a weight assembly pivotally connected to the end portions of the latch plate to generate a force upon the latch plate during operation of the pretension tending to urge the latch plate into the first opening. |
