The present invention discloses an active extension type car front bumper. Three fixed sleeves are rigidly connected to a cross beam of a U-shaped fixed frame, an impact rod is fitted in each fixed sleeve, a front end of each impact rod passes through the cross beam and is fixedly connected to the bumper, and a rear end of each impact rod is fixedly connected to a movable cross beam arranged horizontally left and right. Left and right longitudinal beams of the U-shaped fixed frame are each provided with a movable longitudinal beam that is movable forward and backward. Left and right ends of the movable cross beam respectively extend into the left and right longitudinal beams. A rear end of each movable longitudinal beam is fixedly connected to a hydraulic mechanism. An energy absorption mechanism is provided between every two adjacent fixed sleeves.

The present invention discloses an active extension type car front bumper. Three fixed sleeves are rigidly connected to a cross beam of a U-shaped fixed frame, an impact rod is fitted in each fixed sleeve, a front end of each impact rod passes through the cross beam and is fixedly connected to the bumper, and a rear end of each impact rod is fixedly connected to a movable cross beam arranged horizontally left and right. Left and right longitudinal beams of the U-shaped fixed frame are each provided with a movable longitudinal beam that is movable forward and backward. Left and right ends of the movable cross beam respectively extend into the left and right longitudinal beams. A rear end of each movable longitudinal beam is fixedly connected to a hydraulic mechanism. An energy absorption mechanism is provided between every two adjacent fixed sleeves.

A crash box may include one or more layers arranged to absorb crash energy. In some embodiments, the crash box includes a first layer having an outer skin defining a periphery of the first layer and at least one of: 1) a rib and web structure, and 2) an array of tubes disposed within the outer skin for absorbing crash energy, and a second layer adjacent to the first layer, the second layer having an outer skin defining a periphery of the second layer and at least one of: 1) a rib and web structure, and 2) an array of tubes disposed within the outer skin for absorbing crash energy.

A crash box may include one or more layers arranged to absorb crash energy. In some embodiments, the crash box includes a first layer having an outer skin defining a periphery of the first layer and at least one of: 1) a rib and web structure, and 2) an array of tubes disposed within the outer skin for absorbing crash energy, and a second layer adjacent to the first layer, the second layer having an outer skin defining a periphery of the second layer and at least one of: 1) a rib and web structure, and 2) an array of tubes disposed within the outer skin for absorbing crash energy.

A front section for a motor vehicle includes a bumper cladding and a bumper stiffening which extends in the vehicle longitudinal direction between the bumper cladding and a supporting body part. A connecting unit including a blind nut and a threaded fastener is inserted from below into an opening of the body part to fix a rear edge region of the bumper stiffening on an underside of the body part. The blind nut has flexible legs which are reversibly splayed apart above the opening.

A front section for a motor vehicle includes a bumper cladding and a bumper stiffening which extends in the vehicle longitudinal direction between the bumper cladding and a supporting body part. A connecting unit including a blind nut and a threaded fastener is inserted from below into an opening of the body part to fix a rear edge region of the bumper stiffening on an underside of the body part. The blind nut has flexible legs which are reversibly splayed apart above the opening.

An energy management system for a vehicle which includes a bumper beam and at least one crush can made from composite materials. The crush can includes a plurality of portions, some portions are frangible and at least one is non-frangible. Bumper beam fixing apertures and vehicle fixing apertures pass through the non-frangible portion such that the crush can is connectable to the bumper beam and the vehicle via fixings which pass through at least one non-frangible portion. This ensures that the bumper beam remains attached to the vehicle in the event of a crash which causes the frangible portions to disintegrate.

An energy management system for a vehicle which includes a bumper beam and at least one crush can made from composite materials. The crush can includes a plurality of portions, some portions are frangible and at least one is non-frangible. Bumper beam fixing apertures and vehicle fixing apertures pass through the non-frangible portion such that the crush can is connectable to the bumper beam and the vehicle via fixings which pass through at least one non-frangible portion. This ensures that the bumper beam remains attached to the vehicle in the event of a crash which causes the frangible portions to disintegrate.

A bumper for a motor vehicle has at least one longitudinal beam and a transverse beam that is secured to the longitudinal beam. The transverse beam is designed as a hollow profile body and is produced by connecting, in a material fit, a plurality of straps and webs.

A bumper for a motor vehicle has at least one longitudinal beam and a transverse beam that is secured to the longitudinal beam. The transverse beam is designed as a hollow profile body and is produced by connecting, in a material fit, a plurality of straps and webs.