Air tightness detectorAs the main equipment in the waterproof testing industry, it is also suitable for speaker waterproof testing.

1.The requirement for waterproof testing for outdoor sports electronic products such as speakers has been a must for the industry in the past year, because modern people are paying more and more attention to sports and health. These fashionable smart electronic products are indispensable when doing fitness or exercise, such as smart bracelets, sports speakers, etc.When people are enjoying sports and sweating, they have new requirements for the electronic products we wear. The most basic life waterproofing is definitely required, so electronic products for outdoor sports must have certain waterproof functions.Certain IPx waterproof testing and air tightness testing are required.。

2.Traditional waterproof testing methods include:

1. According to the waterproof grade requirements, the corresponding immersion depth (pressure) and immersion time should be determined.The advantage of this soaking method is that the results are very intuitive and the leakage points are clear. However, it usually causes some irreparable damage to the product and is not advisable.

The other method is to simulate the water immersion environment and time in the laboratory. This method is more accurate and efficient, but it will also cause some irreparable damage to the product. At the same time, it is impossible to provide comprehensive waterproof testing during mass production.

And precisionAir tightness detectorThe emergence of the traditionalWaterproof testDisadvantages of the method.It can greatly improve production efficiency without damaging the performance and structure of the product to be tested, and is very suitable for comprehensive testing in the production line.Waterproof test。

3.How the traditional water immersion experiment is implemented: using a speakerIPX7Waterproof testingFor example:

Method name: Short-time immersion test

Test equipment and test conditions: immersion box.The size should be such that after the sample is placed in the immersion box, the distance from the bottom of the sample to the water surface is at least 1m.The distance from the top of the specimen to the water surface is at least 0.15m

Test time: 30 min。

4.Hai RuisiAir tightness testerHow to achieve waterproof detection of this outdoor sports speaker:

Step 1: There must be a sealing mold with the same appearance as the product, and the size is as accurate as possible. Because the smaller the margin between the outer mold and the product, the higher the detection accuracy, as shown below:

Step 2: Choose the negative pressure detection method (positive pressure may cause certain damage to the speaker membrane and affect the sound quality), and select the appropriate test pressure and test time.We choose to use-60KPpressure detection.

Step 3: Preliminary waterproof test. The test standard at this time may be inaccurate, but it doesn’t matter. We will pass the test.10Find the leakage value of each product, as well as the upper and lower lines of air pressure. If there is the internal volume of the product and the mold volume, we can also calculate its leakage rate.

Step Four: In PrecisionAir tightness testerEnter the above conditions one by one into the program, and it can be used as the basis for testing. During the testing, the air tightness test will be automatically determined based on the conditions we set.OKorNG。

5.Special note: A leaking product will definitely leak, but a leaking product may not leak. However, if we increase the water pressure or extend the immersion time, it may leak. Similarly, if we increase the measuring pressure and time, the number of defective products may increase. At this time, our misunderstanding will lead to the misunderstanding that the accuracy of the instrument is not enough, and misjudgment will occur. If the waterproof tester detectsNGThe actual water immersion test of the product was found to be consistentIPX7waterproof requirements, which shows that our testing standards have been set high. At this time, we can appropriately relax the testing conditions.But the waterproof tester detectsOKProducts actually found to be immersed in water cannot reachIPX7Waterproof testing requirements, this situation is a misjudgment and is absolutely not allowed.

6.Due to the conditions of the water immersion test, during non-destructive leak testingAir tightness testercannot be exactly the same or equivalent, and the pressure and time cannot be converted using industrial formulas. Based on years of practical experience, Hirays Technology has found a simpler method of collecting data: press a part of the sample before testing.IPX7Waterproofing requires an actual immersion test, and the waterproof product should be tested once with a waterproof tester, and the conditions can be used as the judgment standard.

7.Of course, these are just ordinary testing principles and methods. Due to different structures of the products to be tested and different customer requirements, more judgment conditions are used in the waterproof testing, etc., which are all restricted based on actual experience and multiple on-site sampling data.