Patent ID: 8693207

Claim:
A rotatable transfer apparatus, comprising a housing and a circuit board having at least two interfaces, the housing comprising: a sidewall comprising an opening that exposes one of the at least two interfaces, the sidewall further comprising at least two fasteners defined in an internal surface of the sidewall; a top cover rotatably mounted on one side of the sidewall adjacent to the fasteners, and comprising a protrusion extending from an inner surface of the top cover; a bottom board mounted on the other side of the sidewall opposite to the top cover, wherein the sidewall, the bottom board and the top cover define a receiving space for receiving the circuit board; and an elastic module received in the receiving space and fixed to the top cover, and comprising a transformable element, a connecting element, a position block, an elastic element, a receiving element and a position-limiting element; wherein when the top cover is rotated along the sidewall, the elastic module is disengaged from the said one fastener and rotates with the top cover along the sidewall, the receiving element extends from the inner surface of the top cover and defines a receiving groove, two ends of the transformable element connect to the protrusion, the position block connects to the transformable element via the connecting element with the elastic element sleeved over the connecting element, the position block, the connecting element and the elastic element are received in the receiving groove, the position-limiting element is fixed to the inner surface of the top cover to define a sliding hole, the position block is received in the sliding hole of the position-limiting element and capable of sliding along the receiving groove, and the elastic module is rotated with the top cover and detachably engaged with one of the at least two fasteners of the sidewall to select a desired interface from the at least two interfaces to be exposed to the opening of sidewall.