Car bumper device with multiple buffering

Abstract

The invention discloses a car bumper device with multiple buffering. The car bumper device comprises an outer cover plate, buffering springs, a connection frame, an anti-collision steel frame, gas cavities, a supporting plate, a support and an installation plate. The anti-collision steel frame is made of aluminum alloy. The gas cavities are filled with nitrogen gas and made of a wear-resisting and ageing-resisting rubber material. The buffering springs are clamped inside the connection frame, and the connection frame is made of plastic. The gas cavities are closed among the outer cover plate, the anti-collision steel frame and the supporting plate. A first buffering device comprises the buffering springs and the connection frame, and the reaction force of the buffering springs is utilized for buffering. A second buffering device comprises the anti-collision steel frame providing rigid supporting. A third buffering device comprises the gas cavities, and the air pressure is increased so as to stop further deformation when the gas cavities deform and become smaller. The first buffering device and the third buffering device adopt the energy absorption buffering mode and are supplementary. The second buffering device adopts the supporting buffering mode. The car bumper device is simple in structure and moderate in cost and adopts multiple buffering, and the personal safety of drivers and passengers is high.

Description

Technical field [0001] The invention relates to the technical field of an automobile safety device, in particular to an automobile bumper device with multiple buffers. Background technique [0002] With the development of science and technology and the improvement of people's living standards, more and more cars have entered people's daily life. The bumper belongs to the car safety auxiliary device and is installed at the front and rear of the car body. When a collision occurs, the bumper can protect the vehicle body and prevent the vehicle body from being directly impacted. The national standard "Automobile Front and Rear End Protection Devices (GB17354)" stipulates the specific regulations for low-speed collisions of automobiles. In order to meet this regulation, bumper buffers are used in the bumpers of almost all automobiles. [0003] At present, although the existing bumper has undergone continuous technological updates, it still needs innovation and improvement. The ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the application of patent CN97227448.0, a buffer type automobile bumper is disclosed, which is characterized in that a first-stage shock absorbing system is arranged on the outside of the girder, which are respectively fixed on the front inner wall of the girder and the moving bumper, and the second and third stages are arranged on the inside of the girder. Shock-absorbing system, but the three-stage shock-absorbing system is just a simple structure to increase the number of buffers, which requires a large installation space; some continue to complicate the mechanical structure of the energy-absorbing element to enhance the buffering effect, such as the patent CN201410722933.1 application disclosure An energy-absorbing bumper is developed, which is characterized in that an energy-absorbing element and a telescopic mechanism are installed between the bumper front beam and the bumper rear beam, and the added energy-absorbing elements include shock absorbers and springs, which can jointly enhance the energy-absorbing effect , the patent CN201310202223.1 application discloses a bumper bumper, which is characterized in that the side of the bumper bumper facing the bumper body is grid-shaped, and the bumper bumper is far away from the bumper body. There are mounting components used to connect the mounting brackets. The grid will reduce the overall density, thereby reducing the strength. After a collision, it can collapse with the bumper body for a certain distance and play a certain role in buffering and absorbing energy, but the structure is complicated. It increases the difficulty of manufacturing and installation, and does not meet the requirements of the lightweight design concept of the car itself; some bumper buffers use EPP foam products, which need to be imported to achieve a better energy absorption effect, and the cost is relatively high; some use The hydraulic energy-absorbing bumper uses the viscous resistance when the hydraulic oil passes through the orifice to absorb the energy of the collision. It works stably and has a strong absorption capacity, but it is expensive; some consider replacing the hydraulic energy-absorbing bumper with an airbag bumper. It can greatly reduce the cost. For example, patent CN201410470198.X discloses a car energy-absorbing airbag bumper, which is characterized in that it is equipped with an airbag on the bumper. To achieve the purpose of absorbing energy, reducing the damage to the appearance of the car and protecting the personal safety of the driver and passengers, but without considering the defects of airbag leakage that will lead to poor working stability and reliability, the present invention provides a new Multi-buffer car bumper device

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