How to adjust the tightness of wiper?

1. When the car is powered on, first move the wiper to the edge closest to the glass and turn off the power; The adjustment method of wiper tightness is as follows: 1. If you have strong hands-on ability, you can adjust it! The wiper spring is a tension spring, and the strength of the tension spring is closely related to the stretching length. A shackle can be added to the hook of the tension spring, so that the total length of the spring becomes longer and the working range of the wiper is fixed, so that the overall force of the same wiper decreases linearly. How much you want depends on the length of the shackles you add. The longer the chain, the less strength. 2. The key reason is that the adjustment is not good and the tightness should be moderate. Wiper is an important accessory installed on the windshield. If you don't pay attention to the wiper, it is easy to scrape the front windshield into a track. There is noise, that is, the wiper is not installed and there is a buckle at the bottom of the wiper. When the wiper is replaced with a new one, just get some oil, and everything else will be fine. 3. The working principle of electric wiper. The motor on the wiper drives the output shaft through the worm wheel on the armature shaft, drives the output gear through the roller and the roller shaft, and then the output shaft operates the output arm connected with the wiper connecting rod. When the motor rotates, the output arm and the connecting rod are driven to move back and forth.