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Overview of wipers: A wiper is a tool for simply cleaning the front glass of a motor vehicle to prevent rainwater and other dirt from affecting the view.
Operating principle: The power source of the wiper comes from the electric motor, which is the core of the entire wiper system. The quality requirements of wiper motors are quite high. It uses a DC permanent magnet motor. The wiper motor installed on the front windshield is generally integrated with the worm gear mechanical part. The function of the worm gear mechanism is to reduce speed and increase torque. Its output shaft drives the four-bar linkage mechanism, and the continuous rotational motion is changed into a left-right swing motion through the four-bar linkage mechanism.
The wiper motor adopts a 3-brush structure to facilitate speed changes. The intermittent time is controlled by the intermittent relay. The return switch contact of the motor and the charge and discharge function of the relay's resistance and capacitor are used to make the wiper sweep according to a certain period. The wiper blade strip is a tool that directly removes rainwater and dirt from the glass. The scraper strip is pressed to the glass surface through the spring strip, and its lip must match the angle of the glass to achieve the required performance. Generally, there is a wiper control knob on the car combination switch handle, with three gears: low speed, high speed, and intermittent. At the top of the handle is the washer button switch. When the switch is pressed, washing water will spray out, and it can be used with the wiper to wash the windshield. The washer system is a very common device on cars. It consists of a water storage tank, a water pump, a water pipe, and a water spray nozzle. The water storage tank is generally a 1.5 liter to 2 liter plastic tank, and the water pump is a miniature electric centrifugal pump, which transports the washing water from the water storage tank to the water nozzle, and is squeezed by 2 to 4 water nozzles. The washing water is divided into fine jets and sprayed towards the windshield, which works with the wipers to clean the windshield. The principle of bone wipers is to press the wiper blade against the glass through several support points on the skeleton, so that the pressure on each support point on the wiper blade is uneven. During use, due to the uneven pressure on each support point of the bone wiper and the uneven degree of wear, friction noise between the wiper blade and the glass is prone to occur, and it is difficult to scrape away impurities. Boneless wipers rely on a whole guide bar to disperse pressure, so that the force on each part of the wiper blade is even, which can reduce the occurrence of water marks and scratches and achieve better wiping effects.
type;
There are two types of wipers: one is the traditional intermittent wiper, which is adjusted by the driver according to the rain force and visual conditions. What is different from the wipers installed on other ordinary cars is that it can automatically increase or decrease the wiping speed according to changes in vehicle speed. Because in the same amount of rain, the faster the vehicle speed, the more rain will hit the vehicle, and if the vehicle is parked, the deceleration of the wiper will reduce the noise.
Another type of wiper is the sensor-type automatic wiper, which is mostly used on luxury cars in China. It uses sensors to sense the amount of rain and automatically adjust the speed of the wipers. The working principle of the rain sensor is that a light-emitting diode emits a beam of light to the front windshield, using the scattering phenomenon of light running between the glass and raindrops, and using the intensity of the light beam reflected back, the amount of rainwater on the glass can be automatically determined. If water droplets are sensed, the wipers will start to operate, and the speed of the wipers will be automatically adjusted according to the amount of rain at that time, so that the driver does not have to use his or her brain, which is convenient and safe. With the advancement of technology, more and more models are equipped with rain-sensing automatic wipers. This new type of wiper can greatly improve the convenience and safety of driving on rainy days. It was originally only equipped on high-end cars and is developing from high-end cars to mid-range cars.
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Main Product:
Assembly Parts for Rail Car,
Structure Parts of Rail Car,
Metal Mount ,
Junction Box,
Metal Mounting Strip,
Metal Hanging Plate
