With the development of society and economy, the transformation of domestic and foreign cars is quite frequent, and the automobile industry is facing a period of rapid change. The development is characterized by ensuring driving safety, ride comfort, high speed and luxury. To further improve the service life of the car. The development is characterized by further improving the service life of the car under the premise of ensuring driving safety, ride comfort, high speed, and luxury. Buffer shock products are used to control the vibration and noise of automobiles and improve their steering stability. They are generally placed in automobile engine frames, pressure bar devices, suspension bushings, center bearing brackets, bump limiters and torsional vibration dampers to improve the safety and comfort of the car. Buffer shock products can be divided into four categories: brackets, bushings, cushioning and damping. The main requirements are shock absorption, heat resistance, and fatigue resistance. Automotive rubber buffer products include engine mounts, suspension members, rubber springs, rubber air springs, and impact rubber guards. In recent years, in order to improve the safety, comfort, and operability of automobiles, the variety and number of rubber buffer products for automobiles have been increasing.
The engine and the rotating operating system use small rubber buffers
to isolate the vibration of the source. The shock-absorbing of transmission part is solved by a polygonal coupling and a damping clutch. The small rubber buffers used on the front and rear suspension devices not only bear the weight of the car body but also prevent the car body from transmitting the up and down vibration of the wheel. They also suppress the irregular movement of the unsprung mass and transmit the power and braking force. The rubber bumper is one of the important shock absorbers of the car body. Its structural form is that a rubber layer is sandwiched between two metal plates, and the shear deformation of the rubber is used for buffering purposes.