Test centre for performance of vehicle wind screen wiper assembly

Abstract

The invention relates to an automobile windshield wiper assembly performance testing center. It includes a pressure transmission device and a pressure adjustment device that detects and adjusts the pressing force of the wiper on the windshield, a wiper braking device that can repeatedly act on the wiper to make it stop working instantaneously, and build a test chamber The rain shower system in the rain shower environment and the electrical control device using industrial control computer for control and data processing. Except that the industrial control computer and electrical control device are installed in the electrical console, all other devices are sealed in the test compartment with front and rear doors that can be opened. When the automobile windshield wiper assembly performance test center is working, it only needs to install the wiper assembly on the installation template and set the test parameters, and then it can carry out the automatic detection program test of the whole process, through the display screen Monitor the test status and various dynamic data, and automatically print out the test report after the test is completed.

Description

technical field [0001] The invention relates to an automobile windshield wiper assembly performance testing center. Background technique [0002] The performance indicators of the windshield wiper assembly of the automobile must meet the requirements of the People's Republic of China automobile industry standard QC / T44-1997 "Technical Conditions for Electric Windshield Wipers of Automobiles" before it can be produced and used. QC / T44-1997 "Technical Conditions for Automobile Windshield Electric Wipers" requires that the wiper assembly must be tested in a rainy environment to test its wiping frequency, automatic reset, braking performance, wiping effect, and wiper Many indicators such as the pressing force and durability of the windshield of the car. According to relevant domestic and foreign information inquiries, there is no comprehensive testing equipment that uses an industrial control computer to carry out fully automatic monitoring and testing of the wiper assembly. ...

AI Technical Summary

Problems solved by technology

[0003] At present, one of the traditional testing methods is that the wiper manufacturers use scrapped car fronts for testing. The disadvantages of this method are high cost and large area, and different types of car wipers need to be equipped with different types. Genuine car head or scrap car head; the second traditional test method is to use a single device to test the performance of the wiper assembly one by one

For example, the pressing force of the wiper on the windshield glass of the car is measured with a spring balance when the wiper assembly is in a static state; the braking performance of the wiper assembly is artificially forced repeatedly with fingers Stop working, this manual single test method is very clumsy and cumbersome, the test data error is large, and it cannot achieve the purpose of fully automatic test and test of the wiper assembly in the rainy environment

It takes more than 20 days to do a type test for a set of wiper assembly. Using the above method, inspection personnel must be arranged to stand by the testing machine 24 hours a day. The degree of automation is low, time-consuming, labor-intensive, and the test Data is highly influenced by human factors

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