How to choose a car wiper?

The wiper blade is an important safety part, it must be able to effectively remove rain, snow and dirt; it can work at high temperature (minus 80 degrees Celsius) and low temperature (minus 30 degrees Celsius); it can resist acid, alkali, salt, etc. Corrosion by harmful substances. It is a component that keeps the outer surface of the windshield clean and ensures a clear view in rain and snow. It is one of the important guarantee systems for driving safety and an indispensable component for motor vehicles. The function of the wiper blade is not to wipe off the rainwater on the glass. Its real function is to smooth the rainwater on the glass surface to form a uniform water film layer, allowing light to pass smoothly without refraction and bending deformation, improving the driver Clear viewing area.
Wiper blades are not used as frequently as tires and other configurations. They seem small and simple, but the selection criteria are very particular. A good wiper blade must have the characteristics of heat resistance, cold resistance, acid and alkali resistance, corrosion resistance, ability to fit the windshield, reduce the burden on the motor, low noise, strong water repellency, and softness without scratching the windshield.
When choosing a good wiper blade, pay attention to 4 points:
1. Look at the size; first figure out which size of wiper blade your car uses, too long or too short is not advisable
2. Look at the interface; pay attention to whether the way the support rod is connected to the wiper cradle matches or not, and the interface cannot be installed if it does not match.
3. Look at the quality; check for damage and the elasticity of the rubber blades. The elasticity of the blades determines the effect of the rain.
4. Look at the speed; check whether the wiper maintains a uniform speed under different speeds. If the wiper rod has uneven swing, abnormal beating, wipe residue, water film on the glass surface, or small stripes, fog and lines on the glass If the shape remains, it indicates that the wiper blade is a bad product.
1. First find out which type of wiper your car uses, you can refer to the manual that comes with the car to see the wiper model indicated above.
2. Pay attention to whether the way the support rod is connected to the wiper rocker arm is matched. Because some support arms are fixed to the rocker arm with screws,
3. Pull up the wiper and touch the cleaned rubber wiper with your fingers to check for damage and the elasticity of the rubber blade. If the blade is aging, hardened, and cracked, the wiper is unqualified.
4. During the test, place the wiper switch at various speed positions and check whether the wiper maintains a certain speed at different speeds. Especially in the intermittent working condition, pay attention to whether the wiper maintains a certain speed when it is moving.
5. Check the state of the wiper, and whether the wiper rod has uneven swing or missed scraping. If the following three situations occur, the wiper is unqualified. One is that the swing is not smooth and the wiper is abnormally beating; the second is that the rubber contact surface cannot be fully attached to the glass surface, resulting in wiping residue; the third is that the glass surface is in a water film state after wiping, and small stripes, fog, and fog are produced on the glass. Linear residue.