Patent ID: 6869240
Filing Date: 2005-03-22
Classification: G06F

Abstract:
1. A keyboard input device comprising a plurality of key switches, a support plate for supporting the key switches maintaining freedom of operation thereof, and a pointing device mounted on a back surface side of the support plate, the pointing device having a plate-like base, a cylindrical operation body erected on the base and a plurality of sensors arranged on one surface of the base to detect a direction of tilt and an angle of tilt of the operation body; the pointing device permitting an end of the operation body to protrude toward the side of a key switches penetrating through the support plate, and having a water-proof rubber of a predetermined thickness arranged between the base and the support plate; wherein when the base is mounted on the support plate with the water-proof rubber being held between the base and the support plate, the water-proof rubber is pushed on the back surface side thereof onto the base and is intimately adhered on a front surface thereof onto the support plate.