With the popularization of automobiles and the increasing improvement of automobile technology, people have higher and higher requirements for automobile safety. As the hub of automobile driving, the safety of automobile switch button is crucial.In order to ensure the safe driving of car owners, relevant vehicle electronic equipment must function normally, and its sealing design is a top priority.Therefore, it is very necessary to test the sealing of automobile switch buttons. Hirays Technology has also conducted in-depth research on the sealing testing of automobile switch buttons. It has now developed an intelligent sealing tester and put it into use in the production line. The following are the testing cases this time:

Car switch button sealing tester

1. Display of the appearance and detection difficulties of automobile switch buttons

1. The car switch button has a small shape and is made of special waterproof materials. The overall shape is upward and convex to the left. A concave shape is specially cut out inside the button to facilitate installation;

car switch button

2. Due to the special shape and volume of car buttons, it is easy to cause deviations in test results due to air leakage during testing. Therefore, extreme care and precision are required during testing.

2. Breakthrough in detection difficulties of automobile switch buttons and demonstration of the detection process

Air tightness detection of automobile switch buttons

Faced with such a situation, Hirays Technology deliberately used a relatively compact mold and stuck the car switch button into the mold. When the inspection started, the upper and lower molds would be closed to form a closed inspection space. There was an inflation port connected to the instrument duct at the bottom of the mold. Gas was directly filled into the product during inspection, which facilitated direct inspection.

Air tightness detection of automobile switch buttons

At this time, after the tooling connected to the mold is started, a certain volume of gas is injected into the car switch button through the air source. When the detected air pressure is reached, the air supply is automatically cut off and the pressure is stabilized. The air tightness detection system of Hirays Technology will monitor the air pressure in the mold and determine the tightness based on the amount of leakage.

During the test, the inflation port at the bottom of the mold is connected to the conduit to inflate the inside of the car switch button. If the car switch button is not sealed and air leakage occurs, the leakage value displayed in the instrument will become larger and larger, and the pressure value will decrease at the same time.At this time, it can be determined whether the car switch button is leaking, and the instrument test result will also show NG, which means the air tightness test failed.If the tested car switch button does not leak, the gas in the tooling mold will be in a constant state after inflation, and the pressure value and leakage value displayed on the instrument will also be stable. The instrument test result will display OK, indicating that the air tightness test has passed.

3. Parameter table of automobile switch button sealing tester

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