Patent ID: 7881049

Claim:
A transmission apparatus, set in a data processing system, the data processing system comprising a display device and an input device, the display device being connected to the input device through a connecting member, a keyswitch, comprising a keycap and a supporting member set under the keycap; and the transmission apparatus comprising: a pivot, set on the connecting member, the pivot revolves along with the connecting member; a fixed plate, fixed in the input device, the fixed plate comprising a set of first protruding pillars extending from a first face of the fixed plate, the fixed plate comprising a set of grooves; a movable plate, set in the input device and movablely set on a second face of the fixed plate relative to the first face, the movable plate comprising a set of second protruding pillars movablely contained in the set of grooves respectively; a sliding member, set on the first face of the fixed plate, the sliding member comprising a set of first sliding grooves and a set of second sliding grooves, the set of second sliding grooves comprising a tilt part respectively, the set of first sliding grooves being used to contain the set of first protruding pillars respectively and the set of second sliding grooves being used to contain the set of second protruding pillars respectively; a pulley, set on the fixed plate; and a cable, wound on the pivot and set on the pulley and connected to the sliding member; wherein when the pivot revolves along with the connecting member, the pivot drives the cable and the sliding member to slide the sliding member along the direction of the set of first sliding grooves via the set of first protruding pillars, and the set of second protruding pillars of the movable plate slides along the set of tilt parts of the set of the second sliding grooves to move the movable plate along a first direction or a second direction relative to the first direction.