We still use cars a lot, so it is necessary to know some knowledge about universal joints. Moreover, many universal joint manufacturer now have strict quality control.
The structure and function of universal joints are a bit like joints on human limbs, which allow the angle between connected parts to vary within a certain range. To meet the power transmission, adapt to the angle change caused by the up and down jumps generated by the steering and the running of the car, the drive axle of the front-drive car, the half shaft, and the wheel axle are commonly connected by universal joints. However, due to the limitation of the axial size, the required deflection angle is relatively large. A single universal joint cannot make the instantaneous angular velocities of the output shaft and the shaft-in shaft equal, which will easily cause vibration, aggravate component damage, and generate a lot of noise. Therefore, a wide variety of constant velocity universal joints are widely used. In front-drive vehicles, each half shaft uses two constant velocity universal joints. The universal joint near the transaxle is the inner universal joint of the half shaft, and the outer universal joint of the half shaft is near the axle.
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