Patent ID: 6586948
Filing Date: 2003-07-01
Classification: B60N,G01G,G01L

Abstract:
A seat weight measuring device for measuring the weight of a vehicle seat including the weight of a person sitting on it, comprising:a load sensor adapted to convert at least a part of the seat weight to an electric signal; and an absorption mechanism for absorbing at least one of deviation and deflection between the seat and a vehicle body, wherein the absorption mechanism is slidable by LIR at the maximum from side to side, and whereinLIR=(a+b&dgr;)Ã—&ggr;/(&agr;+&ggr;)+(c&dgr;/2)Ã—&ggr;/(&bgr;+&ggr;) wherea: dimensional tolerance (mm) of the center with respect to the fore-and-aft direction of right and left seat rails when securing the seat rails to the vehicle body; b: maximum stroke (mm) that seat slides are capable of sliding; c: distance between fixed points (load sensor center positions) in front of and behind the seat rails; &dgr;: sine value (sin &thgr;) of the tolerance &thgr; of the relative angle deviation of the right and left seat rails when securing the seat rails to the vehicle body; &agr;: deflection amount (mm/kgf) per unit load when causing a lateral deformation (opening and closing) between the right and left seat slides; &bgr;: deflection amount (mm/kgf) per unit load when twisting the right and left seat slides laterally and reversely in the longitudinal direction; and &ggr;: slide amount (mm/kgf) per unit load when sliding the absorption mechanism.