Keyboard device of an electronic keyboard instrument
AssigneeGold Star Co., Ltd.
InventorsMyung H. Kim, Woo H. Kim, Byung J. Choi
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Abstract
Disclosed is a keyboard device of an electronic keyboard instrument generating a sound upon actuation of a switch disposed on a main plate by a pushing operation of a keyboard; the device includes a touch element varying in position according to the operation of the keyboard and a guide element for guiding the touch element, so that pushing force of the keyboard may be regulated. Therefore, this device enables a player to feel the same sense of touch as that in a common piano by eliminating a sense of friction which may be exerted upon his finger when pushing down the keyboard.
Claims13
A keyboard device of an electronic keyboard instrument generating a sound upon actuation of a switch arranged at a main plate by a pushing operation of a keyboard, comprising a guide bar protruding from an underside of a key of the keyboard, and a guide member having a stepped friction surface which contacts the guide bar as it moves along the guide member in a stepwise path.
A keyboard device of an electronic keyboard instrument, comprising a guide protrusion of a generally triangular cross-section shape protruding downwardly from the underside of the keyboard, and a pair of spaced rollers connected to be movable toward and away from each other and urged into contact with sides of the guide protrusion by a spring.
A keyboard of an electronic keyboard instrument, comprising a bent-type leaf spring having a bent free end portion and an opposite side fixed to a main plate with its central bent portion held in contact with a lower surface of the keyboard, and a stepped guide plate, with which the bent end portion of said leaf spring is in contact.
A keyboard device of an electronic keyboard instrument comprising, a guide bar protruding downwardly from the underside of the keyboard, a guide plate fixed to a main plate, and a slide member of a generally triangular cross-section shape biased by a spring connected at one end to one side of the slide member and slidable on said guide plate against a biasing force of said spring into contact with the guide bar.
Dependencies are inferred from the claim text.