Patent ID: 7347464

Claim:
A collision detection system for a vehicle, which has a pair of side members and a bumper reinforce member facing front end surfaces of the side members and extending in a vehicle-width direction, the side members being spaced from each other at a predetermined distance in the vehicle-width direction and extending in a vehicle front-rear direction, the collision detection system comprising: at least one collision load detection unit for outputting signals corresponding to a collision load exerted at a bumper of the vehicle when an obstacle collides with the bumper, the bumper being positioned at a vehicle front side of the bumper reinforce member; a control unit for processing the signals from the collision load detection unit; and at least one collision load bypass member, which is arranged between the rear end surface of the bumper reinforce member and the front end surface of the side member and positioned parallel to the collision load detection unit, wherein the collision load detection unit is disposed between a rear end surface of the bumper reinforce member and the front end surface of the side member, so that the collision load which is transmitted from the bumper sequentially to the bumper reinforce member and the collision load detection unit is detected, and a part of the collision load transmitted from the bumper to the bumper reinforce member is transmitted to the side member through the collision load bypass member, to bypass the collision load detection unit.