A seat belt 11 for constraining an occupant to a seat is provided with both a tension varying means 12, 16 allowing a tension given to the seat belt 11 to vary, and a tension detecting means 15, 17 for detecting a tension of the seat belt 11. There is prov...

A sensor assembly 40 for measuring seatbelt forces includes a first structural member 50 anchored to a vehicle structure and a second structural member 54 mounted for movement relative to the first structural member 50 in response to a seatbelt force (Fig....

An end portion of a webbing belt is attached to a metal base plate, in which a hole is formed. A projecting portion is formed at an inner edge of the hole which inner edge is at a side opposite a belt attachment portion. When tension is applied to the webb...

A seat belt force-sensing mechanism (20) has a housing with first (22) and second (24) housing members. A slidable plate (26) is positioned between plate portions of the first and second housing members. Various spacers are located between the first housin...