Abstract: A vehicle bumper structure to be applied to a vehicle includes an impact absorber to be disposed on a front end side or a rear end side of the vehicle so as to extends in a vehicle width direction. The impact absorber includes small reaction section and a large reaction section. The small reaction section is to be disposed on an outer end side in the vehicle width direction. The small reaction section is configured to generate a predetermined reaction against a colliding object. The large reaction section is to be disposed on an inner side of the small reaction section in the vehicle width direction. The large reaction section is adjacent to the small reaction section. The large reaction section is configured to generate a larger reaction against the colliding object than the predetermined reaction.

Abstract: A collision detection device includes an impact absorber and a collision detector. The impact absorber extends along a vehicle width direction between a bumper face and a bumper beam of a vehicle, and is configured to absorb impact by being deformed upon collision of the vehicle. The collision detector extends along the vehicle width direction, includes a lower collision detector and an upper collision detector, and is configured to detect that the collision has occurred by being deformed upon the collision of the vehicle. The upper collision detector has greater flexibility than the lower collision detector.

Abstract: A vehicle bumper structure to be applied to a vehicle includes an impact absorber to be disposed on a front end side or a rear end side of the vehicle so as to extends in a vehicle width direction. The impact absorber includes small reaction section and a large reaction section. The small reaction section is to be disposed on an outer end side in the vehicle width direction. The small reaction section is configured to generate a predetermined reaction against a colliding object. The large reaction section is to be disposed on an inner side of the small reaction section in the vehicle width direction. The large reaction section is adjacent to the small reaction section. The large reaction section is configured to generate a larger reaction against the colliding object than the predetermined reaction.

Abstract: A collision detection device includes an impact absorber and a collision detector. The impact absorber extends along a vehicle width direction between a bumper face and a bumper beam of a vehicle, and is configured to absorb impact by being deformed upon collision of the vehicle. The collision detector extends along the vehicle width direction, includes a lower collision detector and an upper collision detector, and is configured to detect that the collision has occurred by being deformed upon the collision of the vehicle. The upper collision detector has greater flexibility than the lower collision detector.