The present disclosure proposes a keybed device, including: a keybed support; a keybed arranged on the keybed support; a key height limiting column arranged in one-to-one correspondence with each key in the keybed, and an end of the key height limiting column is fixed on a bottom surface of the corresponding key; a pressure detecting device arranged in one-to-one correspondence under each key height limiting column to detect a pressing strength of each key height limiting column; and a flexible support structure arranged below each key height limiting column and located on at least one side of each pressure detection device. The keybed device includes a flexible support structure, which can avoid false triggering of the Aftertouch effect. A same depth is pressed down from the flexible support structure to obtain a consistent Aftertouch effect, and the performance effect is controllable.

A key assembly includes a capstan and a key. The key includes an upper surface, a hole part having a first inner side surface supporting the capstan, and an opening part arranged between the upper surface and the hole part, the opening part having a second inner side surface surrounding the capstan.

An electronic keyboard instrument includes at least one panel supporting member which supports a panel, the at least one panel supporting member is disposed in spaces formed on an upper surface of a chassis, and the spaces are spaces generated behind rear ends of white keys between two adjacent black keys by arranging a plurality of keys in a manner that rear ends of a plurality of black keys are positioned behind rear ends of a plurality of white keys.

A fastening structure for fastening a to-be-fastened component to a wooden component by using a screw, wherein the wooden component is made of wood having a specific gravity of 0.08 g/cm.sup.3 to 0.85 g/cm.sup.3 inclusive, the screw has a nominal diameter of 0.8 mm to 3.5 mm inclusive, and the distance between a neutral position in a longitudinal direction of an effective screw part, which is the portion where the wooden component and a male screw part formed in a shaft part of the screw mesh together, and the surface of the wooden component that comes into contact with the to-be-fastened component is 1 mm to 15 mm inclusive.

There is provided a keyboard instrument in which a plurality of white keys and a plurality of black keys are arranged in a widthwise direction, a total width dimension of the plurality of white keys that constitute one octave is set to 160 mm or less, and a width dimension of an upper surface of each of the black keys is set to 9 mm or more and 10.5 mm or less.

A key for a keyboard device includes a resin key body and one or a plurality of woody boards attached along at least part of a pair of side portions of the key body. The key body includes an upper portion protrusion which extends along an upper end of each of the side portions and is formed continuous with the top portion, the upper portion protrusion protruding in a lateral direction of the key body. Each woody board is disposed such that an upper end surface thereof is in contact with a lower surface of the upper portion protrusion. The upper portion protrusion has a thickness dimension in a vertical direction smaller than a thickness dimension of the top portion of the key body.

A keyboard device has a plurality of keys, wherein each key includes: a base member formed of a resin material in a box shape having an open lower surface opposite a touching surface, the base member having a rotatably supported base end side; and a pair of wood members formed of a wood material in a rectangular plate shape, disposed respectively on left and right side surfaces of the base member, wherein at least one of the pair of wood members has a thickness dimension within a range of 2 mm or more and 14.5 mm or less.

A keyboard instrument includes keys containing a woody material and including natural note keys and accidental note keys. Each natural note key includes a first playing surface played to produce a natural note. Each accidental note key includes a second playing surface played to produce an accidental note. The first playing surface has a first colorimetric value representing a first color, and the second playing surface color has a second colorimetric value representing a second color. Each of the first and second colorimetric values is derived in accordance with an SCI method in an L*a*b* color space. The first and second colorimetric values satisfy at least one of: a first condition: E*ab17, or a second condition: H*<15 and 1.7<L*/c*<1.7. The first and second playing surfaces differ from each other in at least one of optical reflectance or surface roughness.

A weight and method for installing the same in a piano key or damper, the method including: providing a weight formed from material including a metal having a density greater than 12 grams per cubic centimeter; inserting the weight into the piano key or damper. The material including at least a metal sufficiently strong to form a thread on a surface thereof; and wherein the weight has a thread formed on the surface. The material is resistant to corrosion at least at ambient temperatures The weight being a cylindrical member made of lead; and at least one outer layer of an inert metal material or a corrosion-resistant metal material covering the cylindrical member.