Dust-proof mechanism and electronic device using the same

An electronic device, comprising:

• a bottom housing comprising a bottom wall and a sidewall extending from a periphery of the bottom wall, the bottom wall and the sidewall cooperatively defining a receiving space, the sidewall defining an interface hole;
• and
• a dust-proof mechanism mounted on the bottom housing correspondingly located relative to the interface hole, the dust-proof mechanism being configured to seal the interface hole, the dust-proof mechanism comprising:
• two mounting members oppositely mounted inside of the bottom housing;
• and
• two blocking members movably coupled to the mounting members respectively by at least one elastic member and configured to seal the interface hole, each of the two blocking members comprising a guiding surface;
• wherein the two blocking members are pushed or pulled together by the at least one elastic member, when an insert is inserted into the interface hole, each of the guiding surfaces guide the insert, and the two blocking members are moved away from each other to open the interface hole;
• when the insert is pulled out of the interface hole, the two blocking members are moved toward each other by the elastic member and the two blocking members close the interface hole.