Patent ID: 7935875
Filing Date: 2011-05-03
Classification: G10C,G10H

Abstract:
1. A key actuating apparatus for actuating a key that is rotationally movable and is supported and attached to a frame, said apparatus comprising: a plunger that is rotationally movable in correspondence with a rotational motion of the key, and which is formed in an arc shape extending in a direction of a rotational motion of the plunger, said plunger formed in an arc shape around a fulcrum axis of a rotational motion of the key; a solenoid affixed to the frame and having an electro magnet that is substantially in a cylindrical shape, wherein the plunger is positioned inside the solenoid; and a weight member that is linked to the key, and is supported and rotationally movable in response to rotational motion of the key, wherein a first end of the plunger in a lengthwise direction comprises a magnetic body, wherein a second end of the plunger is fixed to the key by being integrally formed with the key, wherein said weight member applies a force on the key in a predefined direction, and wherein the plunger applies a force on the key in another direction due to weight of the plunger.