Patent ID: 8278551

Claim:
An electronic device, comprising: a housing, wherein an opening is formed through a wall of the housing; an elastic pad unit, comprising: a pad disposed on an exterior side of the wall of the housing; a pillar, having a first end and a second end, wherein the first end is connected to the pad, the pillar extends through the wall of the housing via the opening, a restricting portion is formed on the second end, and the restricting portion is located on an interior side of the wall of the housing; and an elastic element, disposed between the pad and the wall on the exterior side of the housing, wherein the pad is movable between a first position and a second position relative to the wall of the housing, the restricting portion contacts a first part of the housing when the pad is in the first position, the restricting portion is separated from the first part of the housing when the pad is in the second position, and the elastic element is compressed to apply an elastic force upon the pad when the pad is in the second position.