| 摘要 |
In a seat belt buckle a U-shaped main frame (1) has two side portions (7,8) and a tilting locking element (15) located between them to be engageable with a belt tongue (4) when inserted therein, a retaining member (27) being movable in L-shaped cut-outs (11,12) in the side portions between locking and unlocking positions in relation to the locking element (15) by action of the tongue or a release button respectively, and inertial rocking member (20) being pivotally carried by the locking element (15) and spring urged towards a position which locks the retaining member into its said locking position and is unresponsive to pretensioning action on the buckle.
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