Patent ID: 8395899

Claim:
An electronic device comprising: a housing for receiving a functional module, the housing comprising a first side wall and a second side wall opposite to the first side wall, a passage being defined between the first and second side walls for the functional module to extend through, a button slot and a positioning slot being defined in the second side wall and being spaced from each other along a direction of insertion of the functional module into the passage; a baffle plate having a fixing end and a free end, the fixing end being pivotally secured on the first side wall, the baffle plate being elastically biased to rotate about the first side wall to enable the free end to reach the second side wall and obstruct the passage, and a positioning tab being formed on the free end; and a flexible plate being secured on the second side wall and located on a side opposite to the passage, the flexible plate having a button and a block both protruding towards the passage; wherein when the free end of the baffle plate rotates in a first direction and reaches the second side wall, the positioning tab extends into the positioning slot and prevents the baffle plate from further rotating in the first direction, the button extends into the button slot, and the block extends into the positioning slot and blocks the positioning tab from moving in a second direction that is opposite to the first direction.