Patent ID: 7358454
Filing Date: 2008-04-15
Classification: H01H

Abstract:
1. A key sheet, comprising: a key top having a surface portion exposed through an operational opening formed in a casing of an apparatus, and a fixation protrusion protruding from a center of a bottom surface of the surface portion; and a base sheet which is formed of a rubber-like elastic material and which is equipped with a movable membrane, to which the fixation protrusion is fixed and which float-supports the key top to allow displacement of the key top through depression, and a support leg placed on a board, further comprising a stopper plate having an opening through which the fixation protrusion of the key top is passed and whose edge faces a side of the fixation protrusion, wherein, at a time of sidewise movement of the key top, the stopper plate abuts the key top to regulate the sidewise movement of the key top.