Abstract: In a collision detection device for a vehicle, the bumper absorber includes general parts and holding parts alternately in a lengthwise direction of the groove portion. In each of the general parts, a predetermined clearance is formed between an inner wall surface of the groove portion on at least one side of vehicle up and down sides, and the detection tube member. Each of the holding parts is in contact with a surface of the detection tube member on at least one side of vehicle up and down sides, and vehicle front and rear sides to hold the detection tube member. A holding part ratio, which is a ratio of a part of the detection tube member held by the holding parts to a unit length of the detection tube member, is set to be smaller than a predetermined value.

Abstract: A collision detection device for a vehicle includes: a bumper absorber disposed on a front side of a bumper reinforcement in a bumper of the vehicle; a detection tube component mounted in a groove portion defined in the bumper absorber to extend in a width direction of the vehicle, a hollow part being defined in the detection tube component; and a pressure sensor that detects a pressure in the hollow part of the detection tube component, and detects a collision of an object to the bumper based on a pressure detection result by the pressure sensor. The detection tube component is mounted in the groove portion in a state where the detection tube component has at least one or more cove curve portions curved in an up-down direction of the vehicle.

Abstract: In a collision detection device for a vehicle, the bumper absorber includes general parts and holding parts alternately in a lengthwise direction of the groove portion. In each of the general parts, a predetermined clearance is formed between an inner wall surface of the groove portion on at least one side of vehicle up and down sides, and the detection tube member. Each of the holding parts is in contact with a surface of the detection tube member on at least one side of vehicle up and down sides, and vehicle front and rear sides to hold the detection tube member. A holding part ratio, which is a ratio of a part of the detection tube member held by the holding parts to a unit length of the detection tube member, is set to be smaller than a predetermined value.

Abstract: A collision detection device for a vehicle includes: a bumper absorber disposed on a front side of a bumper reinforcement in a bumper of the vehicle; a detection tube component mounted in a groove portion defined in the bumper absorber to extend in a width direction of the vehicle, a hollow part being defined in the detection tube component; and a pressure sensor that detects a pressure in the hollow part of the detection tube component, and detects a collision of an object to the bumper based on a pressure detection result by the pressure sensor. The detection tube component is mounted in the groove portion in a state where the detection tube component has at least one or more cove curve portions curved in an up-down direction of the vehicle.

Abstract: A collision detection device includes a chamber member, a pressure sensor, a collision detection ECU, and a projecting portion. The chamber member is disposed on a vehicle-front side of a bumper reinforcement in a bumper cover and includes a chamber main body having therein a hollow portion. The pressure sensor detects pressure in the hollow portion of the chamber main body. A clearance is formed between the chamber member and a front surface of the bumper reinforcement at least on a part of a rear surface of the chamber main body. The collision detection ECU detects a collision of an object with the bumper cover based on a pressure detection result by the pressure sensor. The projecting portion is provided to project from the rear surface of the chamber main body, and an end of the projecting portion is in contact with the front surface of the bumper reinforcement.

Abstract: A collision detection device includes a chamber member, a pressure sensor, a collision detection ECU, and a projecting portion. The chamber member is disposed on a vehicle-front side of a bumper reinforcement in a bumper cover and includes a chamber main body having therein a hollow portion. The pressure sensor detects pressure in the hollow portion of the chamber main body. A clearance is formed between the chamber member and a front surface of the bumper reinforcement at least on a part of a rear surface of the chamber main body. The collision detection ECU detects a collision of an object with the bumper cover based on a pressure detection result by the pressure sensor. The projecting portion is provided to project from the rear surface of the chamber main body, and an end of the projecting portion is in contact with the front surface of the bumper reinforcement.