The windshield wiper is operated by moving the joystick in the car back and forth by hand. Now when it comes to wipers, most people think of electric wipers. The wiper keeps the window clean by constantly moving back and forth on the windshield to wipe away the accumulated water.
When the moving speed of the wiper reaches a certain value, its power is amazing, and sometimes it even drives the car to swing from side to side. What mechanism can make the wiper arm move so magically? Windshield wipers can be found on car windshields, some car headlights, airplanes and even spaceships.
Wiper combines two mechanical technologies: one is to provide power for wiper through motor and reduction worm wheel. The second is to make the motor drive the wiper through the linkage mechanism.
The motor and reduction gear need a lot of power to make the wiper blade move back and forth quickly on the windshield. In order to generate this kind of power, the designer used a worm gear at the output end of the small motor. The worm gear reducer can increase the torque of the motor by about 50 times and reduce the output speed of the motor by 50 times.
The power output from the reduction gear controls the linkage mechanism to move the wiper back and forth. There is a circuit inside the motor/gear assembly that can sense the downward stop of the wiper. The circuit supplies power to the wiper, and when the wiper stops at the bottom of the windshield, the power supply to the motor is cut off. The circuit can also temporarily pause the wiper during the wiping process according to the intermittent setting of the wiper. The output shaft of the reduction gear of the linkage mechanism is connected with the short convex shaft.
The convex shaft rotates with the rotation of the wiper motor. The convex shaft is connected with a long rod; When the convex shaft rotates, it will drive the long rod to move back and forth. This long rod is connected with a short rod, which drives the wiper blade on the driver's side. The other long rod transfers power from the driver's side to the passenger's side wiper blade.
Control the operation of windshield wipers to keep the windshield clean in rainy and snowy days. All family cars use electric wipers, and the switch is located on the wiper combination handle on one side of the steering column, with three positions: fast, slow and stop. The button switch of the washing liquid nozzle sprays the washing liquid on the glass, which is generally located at the end of the wiper combination handle. Click to spray the washing liquid on the glass.