| 摘要 |
Head and neck restraint apparatus for an occupant of a vehicle comprises a stiff yoke shaped to engage the upper torso and shoulders of the occupant. The yoke is generally U-shaped, with a base and upwardly extending limbs, and has a frontal portion shaped to extend over the chest of the occupant which corresponds to the base of the U. An intermediate portion of the yoke is shaped to fit over the shoulders of the occupant, and an upper portion of the yoke, corresponding to the upper ends of the limbs, extends beyond the intermediate portion to constrain movement of a helmet worn by the occupant. A set of first guides on the yoke are arranged to engage harness members of a safety harness worn by the occupant. Each guide is shaped to engage a respective harness strap or buckle and responds to longitudinal movement of the harness strap or buckle. Tensioning members connected between the respective guides and the helmet apply a tensioning force to the helmet when movement of the occupant causes displacement of the harness relative to the yoke. A set of second guides that respond to lateral movement of the harness is also provided.
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