Gm Global Technolgoy Operations, Inc.

Mark A Morra

Stephen J Cassatta

Jiri Kral

Theresa M Kondel

Jeffrey A Upchurch

Derek Y Guo

Mark O Ellis

A test apparatus collects performance data for a seat belt system having components providing operating stages of pre-tensioning, locking, and load limiting of the seat belt. A bench plate mounts the components of the seat belt system and includes first and second pulleys spaced apart on the bench plate and having the seat belt extending horizontally therebetween. At least one load sensor senses the load experienced by the seat belt. A resistor engages the seat belt between the first and second pulleys and pulls downwardly to introduce slack in the seat belt. An impactor mass is suspended above the seat belt and is released to free-fall onto the seat belt and impose a load on the seat belt simulating the load of a seated occupant being imposed on the seat belt. A control module energizes the pre-tensioning stage and a plotter records force versus time performance data.

Seat belt test apparatus

A seat belt assembly is provided for an occupant seated in a seat that includes a seat back portion and a seat base portion having an outboard side. The seat belt assembly includes a continuous seat belt having a lap belt and shoulder belt. The lap belt has an inboard portion, an outboard portion, and an anchor portion. The anchor portion is fixed to an anchor member positioned below, rearward, and inboard relative to the outboard side of the seat base portion. An actuator assembly is selectively engageable with the outboard portion of the lap belt and is operable to selectively release the lap belt. A pre-tensioner is operatively connected to the shoulder belt. The pre-tensioner is configured to tension the shoulder belt and the lap belt thereby applying force in an inboard direction when the lap belt is released from the actuator assembly.

Vehicle seat belt assembly

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Clarkston, MI, United States of America

Mark A Morra