Patent ID: 7173198

Claim:
A seat weight measuring apparatus comprising: a base frame; a sensor portion which is mounted on the base frame to detect load applied to a vehicle seat; a force input member to which force due to the load applied to said vehicle seat is applied; an arm which is pivotally connected to the force input member by a first shaft and is pivotally supported to said base frame by a second shaft to transmit the force transmitted from said force input member to said sensor portion; and a force sharing mechanism which, in the normal state, does not allow the collision of said first shaft with said base frame and the collision of said force input member with said second shaft and, when force larger than that in the normal state is applied to said force input member, allows the collision of said first shaft with said base frame and the collision of said force input member with said second shaft, and wherein the force sharing mechanism includes only the first and second shafts.