Cause and Solution of Abnormal Noise of Boneless Wiper

When the driver presses the switch of the automobile wiper, the motor starts. The rotation speed of the motor drives the swing arm through the deceleration and torque increase of the worm gear. The swing arm drives the four-bar linkage, which drives the rotary shaft installed on the cowl panel to swing left and right. Finally, the rotary shaft drives the wiper blade to sweep the windshield.
Reasons for abnormal noise of boneless wiper:
1. The windshield is large, and the blade needs a long time to ensure that the clean area of the windshield is suitable, while there is only one vertical stress point of the boneless wiper. Therefore, it is difficult to ensure that the end does not vibrate, which is an important factor in abnormal noise.
2. Exhaust gas pollution causes many irregular oil films on the glass surface that are not easy to see. Where there is an oil film, the scraping is smooth, and where there is no oil film, the scraping is very dry. However, those oil films that are stained with dust particles will become astringent, affecting the smoothness of the scraping blade on the glass.
3. The aging blade will be bent and hardened to a certain extent, which is also an important factor leading to noise. The appearance of the aged wiper blade (which is deformed due to the pressure of the vertical wiper arm) in contact with the glass. At this time, the deformed wiper blade, together with the interference factors such as the irregular oil film on the glass that is not easy to remove, directly causes the wiper blade to "jump" on the glass surface and then vibrate irregularly. The direct result is noise.
Solution to the abnormal noise of boneless wiper:
1. The windshield is large, and the blade needs a long time to ensure that the clean area of the windshield is suitable, while there is only one vertical stress point of the boneless wiper. Therefore, it is difficult to ensure that the end does not vibrate, which is an important factor of abnormal noise. In addition to changing to a car with a smaller windscreen, a better way is to change to a bone wiper arm with more pressure.
2. Exhaust gas pollution causes many irregular oil films on the glass surface that are not easy to see. Where there is an oil film, it will be smooth to scrape. Where there is no oil film, it will be very dry. And those oil films will become astringent after being stained with dust particles, affecting the smoothness of the blade on the glass. In addition to changing the environment of urban life, frequent use of glass water can achieve certain results.
3. The aging blade will be bent and hardened to a certain extent, which is also an important factor leading to noise. If you don't want to change the blade, the better way is to lubricate the glass and let the blade slide on the glass, rather than rough scraping on the uneven glass. Since it is a lubrication problem between glass and rubber, it is recommended to replace the new "soft" blade.