The need for the Rear Shock Bumper is that the spring cannot be stabilized immediately, that is to say, after the spring is compressed and released, it will stretch and contract for a while, so the rear shock absorber can absorb the bumps caused by the bumps. Shake to make the ride comfortable.
The rear shock absorber is not used to support the weight of the body but is used to suppress the shock of the spring rebound and absorb the impact of the road surface. If you drive a broken car with a shock absorber, you can experience the car's bounce through every hole, after the undulation, and then the shock absorber is used to suppress such bounce. Without the rear shock absorber, it will not be able to control the rebound of the spring. When the car encounters a rough road, it will produce a serious bounce. When the corner is bent, the tire grip and tracking will be lost due to the vibration of the spring.
The shape of the rear shock absorber is a shaft cylinder, and there is a movable shaft cylinder or a shaft rod in the shaft cylinder; placed inside the suspension spring, generally connected with the carriage and the wheel bracket. Gas usually uses two methods to buffer the sliding of one shaft in the other: one is hydraulic shock absorption, using special hydraulic oil; the other is called air pressure damping, using pressurized nitrogen.
The rear shock absorber is a two-way movement. When the wheel sinks due to load or braking, the shock absorber is pressurized; when the vehicle returns to the original load, the shock absorber is decompressed. The principle of the shock absorber is actually very simple. When it is pressurized, the lower pressure pipe connecting the wheels rises, pushing the piston into the other barrel connected to the car; the piston has a standard small hole, the oil pressure nozzle is mounted on the hole, and the lubricating oil passes through the hydraulic nozzle The effect of rising to the damping damper. On the contrary, the wheel returns to its original position under the pressure of the suspension spring.