| 摘要 |
An improved tip assembly which includes a tongue plate insertable into a buckle is provided for a safety belt apparatus in which a continuous retractable belt length (15) provides both a lap portion (42) and a shoulder portion (44). The tip assembly (28) through which the belt passes has a snubber slide (60) engaged with the tongue plate (101) and slidable relative thereto. When the belt is drawn by the passenger over his body, the belt shifts the snubber slide rearward on the tongue plate to where the belt is firmly gripped at normal loads between a surface (58) of the tongue plate and a surface (70) of the snubber slide, whereby that portion of the belt which extends across the passenger's lap cannot expand. At heavy deceleration loads, e.g. 150 1lbs on the lap belt, a portion (72) of the snubber slide (60) deflects to decrease the gripping action to allow transfer of belt from the shoulder belt into the lap belt. When the belt is retracted so that a run of the belt is substantially vertical, the weight of the tip assembly (28) causes its front end to tip downward causing the slide to fall forward along the tongue plate releasing its grip on the belt, whereby the tip assembly freely falls to a lower position along the vertical belt run. |
