Casio Computer Co., Ltd.

Akihisa Hoshino

Hirokazu Taniguchi

Hirokatsu Katoh

Atsushi Oshiro

Akihito Akaishi

A keyboard instrument includes a keyboard and an instrument case having a through hole penetrating therethrough from a top surface side to a bottom surface side and a positioning part configured to decide on a position of a music stand when a part of the music stand is disposed in the through hole.

Keyboard instrument

A keyboard instrument includes an instrument main body having a keyboard unit, a stand which supports the instrument main body, main body fixing sections which are first fixing members for fixing the instrument main body to the stand, side plate fixing sections which are second fixing members for fixing the stand to the instrument main body, and front side screw members each of which is a third fixing member for fixing one of the main body fixing sections to one of the side plate fixing sections with them corresponding to each other in the front-rear direction of the instrument main body. Accordingly, in a state where the stand is supporting the instrument main body, each main body fixing section and each side plate fixing section can be fixed to each other by one of the front side screw members being screwed thereinto from in front of the instrument main body.

A keyboard instrument including a plurality of keys and a keyboard chassis, in which each key has a shaft or a shaft hole provided on one end side thereof. The keyboard chassis is provided with shafts when the plurality of keys has shaft holes, and is provided with shaft holes when the plurality of keys has shafts. This keyboard chassis supports the plurality of keys by the shafts being arranged in the shaft holes. Also, first spaces and second spaces are formed between an inner surface of the shaft hole and the shaft. The first spaces are positioned in a vertical direction of the key, and the second spaces are positioned in a longitudinal direction of the key. In addition, the second spaces are larger than the first spaces.

A device case includes speaker boxes that are formed inside spaces created by placing upper cases that have a larger external shape than a lower case on upper of that lower case, as well as box connectors that are arranged fitting into the speaker boxes in the upper cases so as to contact the ends of peripheral portions of the lower case and fix together the lower case and the upper cases. This makes it possible for the box connectors to seal the spaces between the peripheral portions of the lower case and the peripheral portions of the upper cases. This, in turn, makes it possible to reliably and satisfactorily seal the speaker boxes in an airtight manner even when the external shapes of the lower case and the upper cases that are stacked together are different.

Device case, connector, and electronic musical instrument

A keyboard instrument including a musical instrument case, a speaker which emits sounds in response to instructions from a keyboard section, and a keyboard lid which is switchable between a first arrangement state where the keyboard lid covers at least a portion of the keyboard section and a second arrangement state where the keyboard lid is opened to expose at least a portion of the keyboard section and housed in the musical instrument case, in which the keyboard lid in the second arrangement state is arranged such that a first acoustic space for leading the sounds emitted from the speaker to outside of the musical instrument case is formed between the keyboard lid and a portion of the musical instrument case.

Keyboard instrument equipped with speakers

A keyboard instrument including an instrument main body having, on one side surface thereof, a first fitting section including a first fitting convex section, a first fitting concave section that is more concave than the first fitting convex section, and a first guide section provided therebetween, and a side plate which supports the one side surface of the instrument main body and has a second fitting section including a second fitting convex section corresponding to the first fitting concave section, a second fitting concave section corresponding to the first fitting convex section, and a second guide section provided therebetween so as to correspond to the first guide section, in which a vertical length of a rear side of the second fitting concave section in the side plate is larger than a vertical length of a front side of the second fitting concave section in the side plate.

A keyboard device including a plurality of wippens that respectively rotate in the vertical direction in response to the respective depressions of the plurality of keys aligned alongside each other, a plurality of hammers that swing in response to the respective rotation of the plurality of wippens and then respectively add an action load to the plurality of keys, and a wippen holding member having a plurality of wippen flanges that are integrally formed along a direction in which the keys are aligned and that rotatably hold the respective plurality of wippens. Therefore, the plurality of wippen flanges do not need to be individually manufactured and assembled, and thus the plurality of wippen flanges can be easily disposed at once by just installing the wippen holding member.

Keyboard device and keyboard instrument

A keyboard device including a plurality of transmission members which are provided corresponding to a plurality of keys arranged in parallel and each of which makes a rotating motion in response to a depression operation on a corresponding key, a plurality of hammer members which are provided corresponding to the plurality of keys and each of which makes a rotating motion in response to the rotating motion of the transmission member and thereby provides an action load to the key, and a plurality of interlock control sections each of which controls the rotating motion of the hammer member made in response to the rotating motion of the transmission member by a relative motion of an interlock projecting section of the transmission member with respect to a guide hole provided in the hammer member.

A keyboard device of the present invention includes a front guide shaft that is provided on the front portion of a front lid and projects toward sides of the front lid, a rear guide shaft that is provided on the front portion of a rear lid and projects toward sides of the rear lid, and a guide groove that guides the front guide shaft and the rear guide shaft in the front and back directions of a musical instrument case. The guide groove is provided with a guide recess where the rear guide shaft comes in so that the front lid and the rear lid are placed on the same plane when a keyboard lid is closed and covers a keyboard section.

Keyboard device

This key structure includes rotating shaft sections, andwhich are respectively provided in the rear end of key bodies, andarrayed in parallel, and serve as rotation fulcrums for rotations of the key bodies, andin an up and down direction, and connecting sections, andwhich respectively rotatably connect the rotating shaft sections, andalong a key array direction. Therefore, the key bodies, andcan be integrally formed by the connecting sections, and, and the rotating shaft sections, andcan be independently rotated. Additionally, as a result of the rotating shaft sections, andbeing evenly arrayed, the spacing between the keys and the key alignment can beheld evenly, and the key bodies, andcan be stably rotated when depressed.

An electronic keyboard musical instrument which is placed on a supporting surface when it is used, includes an instrument main unit which includes a keyboard having a plurality of keys and which generates electrical signals in response to depressions of the keys, a speaker which has a front side and a rear side and which produces sounds corresponding to the electrical signals from the instrument main unit, and an instrument main unit supporting member which is placed on the supporting surface. The instrument main unit supporting member includes an outer surface facing an external space, an internal space surrounded by the outer surface and housing the instrument main unit at a position apart upward from the supporting surface, and an opening formed in the outer surface and communicating the internal space with the external space. The speaker is attached to the outer surface with the front side facing the opening.

Growing community of inventors

Fussa, Japan

Akihisa Hoshino