In order for a mobile phone to have good waterproof performance, in addition to completing the waterproof work of each component, it also needs to undergo strict waterproof testing to determine whether the waterproof performance of the mobile phone meets the standard. The mobile phone case is one of the key components for waterproof testing.Below, Hirays Technology will combine our mobile phone waterproof testing experience to provide a customer with a mobile phone case waterproof testing solution. The following is a summary of the solution content.
1. Mobile phone case waterproof technology
At present, mobile phone cases mostly use spray-on waterproof coating and waterproof breathable membrane. However, the lifespan and waterproofing degree of the coating and waterproof membrane are difficult to control. Therefore, the most important waterproof function lies in the structure of the mobile phone case. It is most appropriate to make a sealed mobile phone case to isolate the liquid from the outside of the product.
2. Difficulties in waterproof testing of mobile phone cases
Difficulty 1: Since the mobile phone case is a semi-finished product, and there are many components of the mobile phone case, such as the camera part, USB charging interface, speaker interface, upper and lower microphone holes, card tray and other important parts are also in an empty state, it is difficult to test.When making a plan, all the holes in each component must be blocked before testing can be carried out. If any hole is not sealed, it will be impossible to determine where the leak is.
Difficulty 2: It is very important to control the air pressure in place during inspection.Because if the air pressure is too high, it will cause deformation and damage to the phone case.
The mobile phone case to be tested
3. How does Hirays Technology solve the problem of waterproof testing of mobile phone cases?
Since the mobile phone case has a complex structure and is plate-shaped, in order to achieve non-destructive testing, Hirays Technology uses an indirect detection method.First, customize the corresponding mold for the mobile phone case and fix it on the tooling.The mold can effectively fix the plate-shaped mobile phone case, and also blocks the holes in its components to facilitate the detection of air leakage.Put the mobile phone case in before testing to effectively fix the plate-shaped product to be tested.Then start the tester, the upper and lower molds will be closed, and a sealed space will be formed inside the mold. At the same time, the external environment is isolated, so that the internal structure of the mobile phone case is not damaged during the test.
This detector of Hirays Technology uses compressed air as the detection medium and uses the pressure drop test method to perform sealing testing.The internal space of this device is only (1.5cc), and it is equipped with an imported highly sensitive pressure sensor to achieve high-precision detection conditions.
Because the mobile phone case does not have an inflation hole, a mold is required to wrap the product, and then quantitatively inflate the product surface through the mold. The system will strictly control the air pressure and maintain the air pressure within a certain range to avoid damage to the mobile phone case.Then cut off the air source, use the pressure sensor inside the instrument to monitor the pressure changes after the product is inflated, and determine the waterproofness based on the air pressure changes.
4. Display of mobile phone case waterproof tester
5. Testing details of mobile phone case waterproof tester
6. Parameters related to mobile phone case waterproof test
In addition to the mobile phone case waterproof tester of Hirays Technology, we have mature testing solutions and equipment for the waterproofing of various components such as the entire mobile phone, fingerprint lock, home button, mobile phone microphone hole, USB interface, camera, breathable valve, waterproof and breathable membrane, mobile phone buttons, mobile phone card holder and other components.
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