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Solution of waterproof test for electric toothbrush

Waterproof performance is not only the most basic quality requirement of electric toothbrush, but also the highlight and selling point of electric toothbrush. Electric toothbrush as a daily use of the whole machine, once the water, the circuit board inside will be short circuit, light product scrap, heavy will lead to other safety accidents, so the manufacturer of electric toothbrush for strict waterproof test. Not long ago, a manufacturer of electric toothbrush sought a waterproof test scheme from Harris technology, hoping to use our instrument to test the waterproof of electric toothbrush. Here is a brief introduction of the scheme.


Product exhibition of electric toothbrush waterproof tester

1、 Customer's waterproof test requirements for electric toothbrush

After in-depth communication with customers, Harris technology learned that customers need to test and identify the IP67 waterproof grade of electric toothbrush, and then required to test under the condition of ensuring that the appearance of electric toothbrush and electronic components do not cause damage.

2、 Difficulties in waterproof test of electric toothbrush

The customer's electric toothbrush is sealed as a whole, so the waterproof performance is good, but it also brings some difficulties to the waterproof test. If we want to achieve high-precision test, we need a strong monitoring system to assist, so as to detect the small leakage of the electric toothbrush.


Product display to be tested

3、 Specific solutions

Hiris technology uses compressed air as the detection medium to detect the water resistance of the electric toothbrush by detecting the change of air pressure. Because the electric toothbrush is sealed as a whole and there is no inflation port, we have customized a specific mold and tooling for it. The mold can not only assist the test, but also protect the appearance of the product.

The original tiny internal space (1.5cc) of the test equipment is equipped with imported high-sensitivity pressure sensor, and the detection accuracy can reach 0.1pA. Bubbles with large leakage needle eye can be detected without error every minute. The detection time is between 5-8 seconds, which meets the requirements of low detection cost and high detection efficiency.

The tester input a variety of waterproof grade test parameters, not limited to one waterproof grade test. It can support leakage test, blocking test, positive pressure test, negative pressure test and other leakage test methods.


Electric toothbrush waterproof tester tooling

4、 Details of waterproof test for electric toothbrush


5、 Electric toothbrush waterproof test related functions

1. Large size touch screen is used as the human-machine interface, which can easily monitor the test results and set various parameters in the process of waterproof test.

2. It has the alarm function of qualified and unqualified products, which can eliminate the possibility of manual misjudgment and misinspection.

3. With 4-way switch input and 8-way relay output, it can accept the control of external sensors and switch buttons, and can control the external relay, solenoid valve and other executive components, which is convenient to realize the full automation of the test.

4. The tester has 200 user subroutines. By setting the parameters of the subroutines on the touch screen, the user can connect different subroutines in series to form a test process. Through the I / O interface of the leakage tester, the leakage tester can receive the control signals from external sensors and control the external actuators (relays, solenoid valves, etc.). So as to realize the automation of the test process.

5. With test data recording function, test data can be downloaded to U disk and displayed by computer.

6. With barcode scanning function, it can track and record defective products and repair situation; The function of upper computer.


Function interface of electric toothbrush waterproof tester

After continuous function improvement and technology update, the waterproof tester of Harris technology has solved the problem of waterproof test for many customers in the electric toothbrush industry, greatly reducing their test cost and improving the test efficiency. With professional technology and considerate service, Harris technology has made its own contribution to the development of electric toothbrush industry and won the praise of customers.

All the contents of this article are original by Harris technology, reprint and false original are prohibited, and any violation will be responsible for the consequences.

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