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 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 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 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 magnetic collision damping device for vehicles is disclosed, in one embodiment of which a first trough 3 and a second trough 4 are slidably connected to a vehicle frame, and electromagnets 7, 8 whose like poles are arranged to face each other are fixed inside the first trough 3 and the second trough 4. This invention can prevent the electromagnets from being damaged when being subject to an impact, and can demonstrate its collision damping function regardless of whether a collision force comes from a vehicle front or a vehicle rear. All electromagnets are arranged close to the vehicle rear, effectively protecting the safety of passengers.

A magnetic collision damping device for vehicles is disclosed, in one embodiment of which a first trough 3 and a second trough 4 are slidably connected to a vehicle frame, and electromagnets 7, 8 whose like poles are arranged to face each other are fixed inside the first trough 3 and the second trough 4. This invention can prevent the electromagnets from being damaged when being subject to an impact, and can demonstrate its collision damping function regardless of whether a collision force comes from a vehicle front or a vehicle rear. All electromagnets are arranged close to the vehicle rear, effectively protecting the safety of passengers.

A shock absorption device includes an inner cylinder assembly threadably engaged within an outer cylinder assembly. The outer cylinder assembly includes a cap shaped member, at least one protruding member, and at least one first spring member. The inner cylinder assembly includes at least one compressive member, at least one second spring member, and at least one movable piston member. When an external impact force is applied to the cap shaped body member, the first threaded portion of the outer cylinder assembly jumps over the second threaded portion of the inner cylinder assembly as provided by elastic movement of the resilient ring member about the cap shaped body member. The thread jumping results in the first spring member compressing and the protruding member pushing the piston member which pushes and compresses the second spring member and the compressive member providing a reactive force to absorb the external impact force.

A shock absorption device includes an inner cylinder assembly threadably engaged within an outer cylinder assembly. The outer cylinder assembly includes a cap shaped member, at least one protruding member, and at least one first spring member. The inner cylinder assembly includes at least one compressive member, at least one second spring member, and at least one movable piston member. When an external impact force is applied to the cap shaped body member, the first threaded portion of the outer cylinder assembly jumps over the second threaded portion of the inner cylinder assembly as provided by elastic movement of the resilient ring member about the cap shaped body member. The thread jumping results in the first spring member compressing and the protruding member pushing the piston member which pushes and compresses the second spring member and the compressive member providing a reactive force to absorb the external impact force.