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On the structural design points of mobile phone silicone keys

Release time:

2019-09-21 12:30

Source:

Do you know about the structural design points of mobile phone silicone keys?

Maybe you know that the keys of the mobile phone are made of silicone, then you knowStructural Design Points of Silicone KeysWe should be very clear, in our lives, there are a lot of silicone-related daily necessities, but behind each item, there is a structural design points of the story, and we tell you today is aboutMobile phone silicone buttonstructural design points.

硅胶按键的结构设计

Let's first look at the design points between the mobile phone shell and the silicone button:

  1. In the structural design process, the gap between them should be kept at 0.15-0.20mm.
  2. The gap between the inner wall of the silicone key and the boss should be kept at 0.05-0.10mm
  3. The gap between the surface of the silicone boss and its surface should be kept at 0.05mm.
  4. The gap between the straight body position and the casing should be kept at 0.12-0.15mm,
  5. The gap between the key and the casing should be kept at 0.20mm.
  6. The gap between the key and the chassis shall be at least more than 0.20mm.
  7. The height of the conductive base shall not be greater than 0.25mm
  8. The diameter of the conductive base should be between 1.80-2.33mm.
  9. The elastic arm length of the silicone button shall not be greater than: 0.80mm
  10. The key must be designed above the surface of its housing between 0.20-0.30mm.

硅胶按键的结构设计

We then look at the structural design points of pure silicone mobile phone keys:

  1. The clearance between the key and the shell shall be kept at 0.20mm;
  2. The elastic arm length of the pure silicone key is at least greater than 0.80mm;
  3. Keep the height of the conductive base at least greater than 0.25mm;
  4. Silicone substrate thickness should be between 0.20-0.30mm;
  5. The gap between the upper and lower surfaces of the key should be about 0.05mm;
  6. The key should be higher than the shell surface distance should be about 0.50mm;

硅胶按键的结构设计

Then, we need to pay attention to the structural design precautions of the mobile phone silicone button:

  1. The back of the silicone key needs to design a support rib in the appropriate place to prevent the key from sinking under long-term pressing.
  2. When designing the silicone back of the button, it is necessary to consider whether there is any incompatibility with the LED light on the PCB, so as not to affect the normal operation.
  3. If the design of our silicone key table is too high, in the spraying process, we need to make an adjustment with the root and side wall of the key to avoid light leakage.
  4. When the key dial angle is needed, the angle should be adjusted to 1-1.5 degrees.
  5. This is a more important step, that is, a blind spot should be added to the top of the key number "5", which is often missed due to operational errors.

硅胶按键的结构设计

I think if you read carefully what I have listed aboutStructural design points of mobile phone silicone keysYou will definitely become a professional master of silicone key design!

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