Electric windscreen wiper with fault self-checking system and self-checking method thereof

Abstract

An electric windscreen wiper with a fault self-checking system comprises a swing arm, a scraping blade, a connecting plate and a clamping sleeve. The end part of the swing arm is rotatably connected with the connecting plate, and the side part of the connecting plate is rotatably connected with the clamping sleeve; the inner side of the clamping sleeve is connected with the scraping blade in a clamping manner; a stress sheet is arranged between the scraper blade and the clamping sleeve and is used for detecting the stress value of the scraping blade; the side part of the clamping sleeve is provided with a tilt angle sensor, and the tilt angle sensor is used for detecting the swinging angle value of the scraping blade; the tilt angle sensor and the stress sheet are electrically connected with a central processing unit and used for transmitting the detected stress value and swinging angle value and comparing the detected stress value and swinging angle value with preset values; and the central processing unit is electrically connected with an input module and a display module. Detection and display reminding can be carried out at the first time when the windscreen wiper fails, normaloperation of the windscreen wiper can be ensured, and safety is improved.

Description

technical field [0001] The invention belongs to the technical field of wipers, in particular to an electric wiper with a fault self-checking system and a self-checking method thereof. Background technique [0002] The wiper refers to the piece structure installed in front of the windshield. It is composed of a motor, a reducer, a four-bar linkage, a wiper arm spindle, and a wiper blade assembly. Rain, snow and dust. There are roughly two types of wipers. One is the traditional intermittent wiper, which is the most common wiper. There are three to four segments, which are adjusted by the driver according to the rain and sight conditions; the other is the raindrop sensor. , mostly used in mid-to-high-end models. A good wiper must have the characteristics of heat resistance, cold resistance, acid and alkali resistance, corrosion resistance, fit the windshield, reduce the load on the motor, low noise, strong water repellency, soft and not scratch the windshield, etc. clear. ...

AI Technical Summary

Problems solved by technology

[0003] Usually, after a period of use, the wiper is affected by the wind force or the blade itself is aging, which greatly affects the adhesion between the blade and the windshield, making it difficult for the wiper to scrape off the water stains and dust on the surface of the windshield. When the linkage mechanism of the wiper fails, the increase of the swing amplitude will directly cause the blades to collide with each other, or cause the swing amplitude of the wiper to decrease, so that there will be unscraped areas on the windshield, which will pose a great safety hazard

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