Electric toothbrushes mainly use the rapid rotation or vibration of the electric movement to cause the brush head to produce high-frequency vibrations, which instantly breaks down the toothpaste into fine foam and cleans the teeth deeply.The characteristics of electric toothbrushes make their waterproof requirements particularly high.When manufacturers are producing, they will test its waterproofness. Compared with the traditional waterproofness testing method, people now prefer the new air tightness testing method.

Hirays Technology has also done a lot of research on the air tightness testing of electric toothbrushes. While solving many testing problems, Hirays' air tightness detectors have also been put into production lines and are used by people.This time we will share an air tightness testing case of an electric toothbrush for your reference.

Electric toothbrush air tightness tester

1. Analysis of the appearance and detection difficulties of electric toothbrushes

1. The air tightness test conducted this time is an ordinary electric toothbrush, which is wrapped with waterproof silica gel. The switch button above the handle of the electric brush is also covered with a layer of waterproof silica gel. This structure has a high degree of precision;

electric toothbrush

2. The head of the electric toothbrush is a protrusion that connects the bristles, and the bottom is two concave charging ports. This structure is difficult to detect, and the surface of the entire toothbrush is smooth, making it difficult to fix, which is detrimental to detection.

2. Breakthroughs in the detection difficulties of electric toothbrushes and demonstration of the detection process

Electric toothbrush air tightness detector display

1. Based on the shape of this electric toothbrush, Hirays Technology specially customized a special mold for it, and there is an air port at the rear of the mold that is specially designed to block the bottom of the electric toothbrush, so that the electric toothbrush can be stuck into the mold. When the test starts, the upper and lower molds will be closed to form a sealed space;

Air tightness testing mold for electric toothbrush

2. As long as the program is set before the test, the mold under the instrument will close the electric toothbrush up and down during the test, forming a sealed environment around it.The instrument will directly inflate the mold. When the internal gas reaches a saturated state, the air pressure inside the mold can be used to determine whether the air tightness of the electric toothbrush is qualified.

Detailed display of air tightness testing of electric toothbrushes

3. During the test, the inflation port at the rear of the mold is connected to the conduit to inflate the inside of the mold. If the electric toothbrush 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 controller is leaking, and the instrument test result will also show NG, which means the air tightness test failed.If the tested electric toothbrush does not leak, the gas in the tooling mold will be in a constant state after inflation. The pressure value and leakage value displayed on the instrument are also stable. The instrument test result will display OK, indicating that the air tightness test has passed.

three,Electric toothbrush air tightness tester parameter table

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