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Lubricating difficulties and grease selection methods for automotive glass lifters

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Basic structure and lubricating parts of automobile glass regulator

1、According to the transmission mode, the automobile glass lifter is divided into: wishbone type, rope wheel type and flexible shaft type;

2、The components of the automotive electric glass lifter are three parts: the glass lifter motor, the mechanical lifting mechanism and the control system.

   The rope wheel type electric glass lifter is composed of a glass lifter motor, a steel wire rope, a guide plate, a glass mounting bracket, etc.

3. The working principle of the automobile electric glass lifter: start the motor, the motor drives the reducer to output power, pulls the wire rope to move the glass mounting bracket, and forces the door and window glass to move up or down in a straight line.

4. Lubrication point of automobile electric glass lifter:

A Wishbone Electric Window Regulator Lubrication Point

B Sheave Electric Window Regulator Lubrication Point

Some failures of the glass regulator

serial number

fault phenomenon

cause of issue

Troubleshooting

1

The glass cannot be lifted

The reason of the motor itself (poor contact of the brush, etc.)

Replace the motor

2

Worm gear stuck, ablated

Replace the motor

3

The wire rope is broken (the cause of the wire itself)

Replace lifter

4

Severely deformed stent

Replace the bracket

5

Severely worn gear sector (poor lubrication)

Replace the bracket or change the grease

6

Glass lift and shake

The guide rail is severely corroded, and the glass is stuck and blocked (poor lubrication or foreign matter)

Replace the bracket or change the grease

7

Worm gear slippage, tooth skipping (poor lubrication)

Replace the motor or change the grease

8

Abnormal sound of glass lifting

 

The reason of the motor itself (large clearance of the motor shaft, etc.)

Replace the motor

9

Dry grinding of worm gears (poor lubrication)

Replace the motor or change the grease

10

Dry friction between wire rope and guide plate (poor lubrication)

Replace the motor or change the grease

11

Wire rope dry friction (poor lubrication)

Replace the motor or change the grease

Company Lubrication Solutions for Automotive Window Regulators: Bench Test Simulated Automotive Window Regulators

Introduction to the experimental bench

1. The test bench for automobile electric glass lifter is mainly composed of: electric control console and operation station;


2. The test bench has two stations, which can simulate the durability test of wishbone type, rope wheel type and flexible shaft type glass lifter;


3. The test bench can monitor the starting current, locked-rotor current, and durability times when the glass rises and falls, so as to judge the durability life of the glass lifter.


1. Select the rope wheel type electric glass lifter, and use petroleum ether to clean the worm gear, wire rope and guide plate of the motor reduction mechanism;


2. Add different greases to the worm gear, wire rope and guide plate;


3. The sampling rules of current value are as follows: 1000-2000 times of rising and falling is a cycle, sampling is carried out, and the current values of 10 groups of opening and closing cycles are measured each time, including the starting current of rising and falling, and the stall current. This continues until a failure stops working or the expected durability life is reached.


1. The worm gear reduction mechanism of the electric glass lifter needs to be lubricated.


2. The mechanical lifting mechanism (gear fan, wire rope) needs to be lubricated.


Grease for electric glass lifter worm gear has the following requirements:


※Excellent high and low temperature resistance, applicable temperature range: -40 ~ 80 ℃, low temperature starting and running torque are extremely small;


※Low friction coefficient, good lubricity and adhesion, which can reduce running noise for a long time;


※Excellent water resistance and anti-corrosion protection;


※Good compatibility with most plastics and elastomers;


※Excellent oxidation stability, mechanical stability, colloidal stability and anti-aging ability, extremely long service life.


The main technical parameters of the electric glass lifter are nominal voltage, working voltage, rated load, glass stroke, glass rise time, maximum current consumption of the motor, braking force and life, etc. In addition, it must be able to withstand environmental tests such as high temperature, low temperature, salt spray, dust, water spray, vibration and shock, and the product should be able to withstand tests such as motor braking, motor overcurrent protection, electromagnetic compatibility, noise and life. .



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