Patent ID: 6849808
Filing Date: 2005-02-01
Classification: B60N,B60R,G01G

Abstract:
1. A weight sensor device for detecting a weight of a occupant seated on a seat, the seat including a seat frame and a cushion, the cushion being deformed due to the weight of the occupant when the occupant is seated on said seat, said weight sensor device comprising: a displacement member arranged in the seat frame, said displacement member being displaced downward in the seat frame as the deformation of the cushion is caused; a converter for converting a displacement of said displacement member into an electric signal, the converter being connected to a side portion of the displacement member, wherein said converter comprises a moving member for moving in one direction in association with a displacement of said displacement member and a variable resistor mechanically connected to said moving member, said variable resistor having a resistance value changing in accordance with the movement of said moving member; and at least one spring member configured to produce resistance force with respect to the movement of the displacement member, the spring member being connected, independently of the connection between the converter and the displacement member, to the displacement member.