Water spraying control system of automobile water spraying windscreen wiper

Abstract

The invention relates to a water spraying control system of an automobile water spraying windscreen wiper. The water spraying control system comprises a windscreen wiper motor, a washing pump, a first contact, a second contact, a third contact, a vehicle body controller and a relay, wherein an insulating disc is fixed to a motor shaft of the windscreen wiper motor in the circumferential direction, a current-conducting plate is arranged on the insulating disc and is in a circular arc shape concentric with the insulating disc, the central angle of the current-conducting plate is smaller than or equal to 180 degrees, the front end of the conductive plate is in contact with the first contact, the second contact and the third contact, one end of the washing pump is electrically connected with a movable contact of the relay, the other end of the washing pump is electrically connected with a negative electrode of a vehicle body power supply, a first static contact of the relay is connected with a common ground, a second static contact and a power supply end of the relay are electrically connected with a positive electrode of the vehicle body power supply, a signal control end of the relay is electrically connected with a control signal output end of the vehicle body controller, the first contact is electrically connected with a reset signal end of the vehicle body controller, the second contact is electrically connected with a negative electrode of the vehicle body power supply, and the third contact is electrically connected with a control signal input end of the automobile body controller.

Description

technical field [0001] The invention relates to the technical field of automobile water spray wiper, in particular to a water spray control system of automobile water spray wiper. Background technique [0002] The wiper is a device used to scrape off the raindrops and dust on the windshield of the vehicle, so as to improve the driver's driving sight and ensure driving safety. As a kind of wiper, the water spray wiper can spray water to the corresponding position of the windshield with the movement of the wiper, so that the cleaning effect is better. The applicant submitted an invention patent application with the application number CN201910012034.5 on January 7, 2019, such as figure 2 As shown, the water spraying method of this technology is to spray water upward when the wiper moves upward, and spray water downward when the wiper moves downward. This method of spraying water when the wiper moves up and down will cause too much water on the windshield. , It is easy to affe...

AI Technical Summary

Problems solved by technology

However, when the washing pump is started under this control mode, a large current flows through the circuit formed by each contact and the conductive plate, so when the contacts leave the conductive plate, electric sparks are easily generated, so that the conductive plate is ablated by the electric spark to form a concave. Pit, affecting the control reliability of the washing pump and the cleaning effect of the water spray wiper, and shortening the service life of the water spray wiper

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