What is the difference between the front and rear wiper symbols?

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Car front wiper symbol is a fan-shaped icon with a diagonal line on the left and a water spray line in the middle, while the rear wiper symbol is a rectangular icon with a diagonal line on the left and a water spray line in the middle. More details are as follows: 1. The wiper, also known as the windshield wiper, is a device used to remove raindrops and dust attached to the vehicle's windshield to improve the driver's visibility. 2. The worm gear mechanism serves to reduce speed and increase torque. Its output shaft drives a four-bar linkage mechanism, which converts continuous rotational motion into a left-right oscillating motion. The wiper motor adopts a 3-brush structure for easy speed change. The intermittent time is controlled by the intermittent relay, utilizing the motor's return switch contacts and the relay's resistor-capacitor charge-discharge function to make the wiper sweep at a certain cycle. 3. The wiper blade rubber is the tool that directly removes rainwater and dirt from the glass. The blade rubber is pressed against the glass surface by a spring strip, and its lip must match the angle of the glass to achieve the required performance.