Tension sensing assembly

A tension sensing assembly for a seat restraint system in a vehicle comprising:

• a movable anchor plate adapted to be connected to belt webbing of the seat restraint system;
• a sensor plate disposed on said anchor plate;
• an anchor bolt extending through said sensor plate and said anchor plate to fix said sensor plate relative to vehicle structure and allow said anchor plate to move relative to said sensor plate;
• a housing mounted to said sensor plate;
• a movable actuator disposed in said housing;
• at least one spring disposed between said housing and said actuator;
• at least one magnet mounted to said actuator;
• a Hall effect sensor mounted to said housing and cooperable with said at least one magnet;
• and
• said anchor plate having a tab portion extending through said housing and cooperable with said actuator to move said actuator to deflect said at least one spring, said actuator moving said at least one magnet relative to said Hall effect sensor to change an output of said Hall effect sensor to indicate a tension level in the seat restraint system when said at least one spring is deflected.

A seat restraint system for a vehicle comprising:

• a belt webbing;
• a movable anchor plate connected to said belt webbing;
• a sensor plate disposed on said anchor plate;
• an anchor bolt extending through said anchor plate and said sensor plate to fix said sensor plate relative to vehicle structure and allow said anchor plate to move relative to said sensor plate;
• a housing mounted to said sensor plate;
• a movable actuator disposed in said housing;
• at least one spring disposed between said housing and said actuator;
• at least one magnet mounted to said actuator;
• a Hall effect sensor mounted to said housing and cooperable with said at least one magnet;
• and
• said anchor plate having a tab portion extending through said housing and cooperable with said actuator to move said actuator to deflect said at least one spring, said actuator moving said at least one magnet relative to said Hall effect sensor to change an output of said Hall effect sensor to indicate a tension level in the seat restraint system when said at least one spring is deflected.