Patent ID: 7490523

Claim:
An occupant load detecting device of a seat for a vehicle, comprising: a strain member arranged between a floor-side fixing member adapted to be fixedly mounted on a vehicle floor and a seat-side fixing member adapted to be fixedly attached to a vehicle seat and having a strain gauge; a connecting member fixed to the strain member in a vertical direction of the seat and securely connected to one of the floor-side fixing member and the seat-side fixing member; a first supporting member relatively immovably fitted into a fixing hole formed at one end portion of the strain member and fixed to an attachment surface formed at the other one of the floor-side fixing member and the seat-side fixing member to support the strain member with a predetermined distance from the attachment surface; a second supporting member fitted into an attachment hole formed at the other end portion of the strain member and having a predetermined gap with the attachment hole, the second supporting member fixed to the attachment surface formed at the other one of the floor-side fixing member and the seat-side fixing member to support the strain member with the predetermined distance from the attachment surface; and a bracket including a first fixing portion relatively immovably fixing the first supporting member at one end portion of the bracket and a second fixing portion relatively immovably fixing the second supporting member at the other end portion of the bracket, the bracket being formed with an amplifier case fixing portion continuous with the first fixing portion and the second fixing portion and extending at a side of the strain member in a lateral direction of the seat.