| 摘要 |
A casing of an electronic device includes an opening securely covered and remained unused to prevent the opening from being exposed. The casing includes a casing body and a cover plate, and the casing body has an opening and a thermoplastic pillar installed vertically inside the casing body. The thermoplastic pillar is proximate to the opening and includes a fixed portion formed at an end of the thermoplastic pillar. The cover plate is covered onto the casing body to cover the opening and has a positioning hole for passing the thermoplastic pillar, and the positioning hole is smaller than the fixed portion, such that the opening of the casing can be sealed and remained unused for a long time to achieve the effects of preventing internal electronic components from being exposed, maintaining the aesthetic appearance, preventing external pollutants from entering, and extending the lifespan of the electronic device. |
