| 摘要 |
A tongue assembly for use in a safety apparatus in which belt webbing restrains movement of an occupant of a vehicle includes a base, a cover, and a cam. The cover is mounted for sliding movement on the base. The cover has an actuator portion engageable by the belt webbing to slide the cover along the base between a first portion and a second position. The cover engages and pivots a cam when the cover slides from its first position to its second position. The cam has a clamping surface disposed adjacent a clamping surface on the base. A portion of the belt webbing passes between the clamping surfaces on the base and the cam member. The cam is pivoted by sliding movement of the base into a clamping position in which the cam clamps the belt webbing against the base to block movement of the belt webbing through the tongue assembly.
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