Steering transmission shaft is the core component of automobile steering system. Its performance is directly related to traffic and personal safety, so there are several requirements for the design of steering transmission shaft.
1. The rotating shaft shall have certain rigidity. Ensure that the steering torque and steering angle on the steering wheel are transmitted to the steering gear;
2. Due to the improvement of road conditions, the increase of vehicle speed and the increasingly strict road safety regulations, the steering transmission shaft should have the energy absorption function to prevent injury;
3. The steering transmission shaft shall have good fatigue resistance to ensure its service life.
4. In addition to the flexible universal joint, the steering transmission shaft of modern cars is also equipped with a mechanism that can change the working angle and height of the steering wheel, so as to facilitate the operation of drivers of different statures.