WO2018169078A1

WO2018169078A1 - Keyboard device

Info

Publication number: WO2018169078A1
Application number: PCT/JP2018/010607
Authority: WO
Inventors: 俊介市来
Original assignee: ヤマハ株式会社
Priority date: 2017-03-16
Filing date: 2018-03-16
Publication date: 2018-09-20
Also published as: JPWO2018169078A1; JP6838647B2

Abstract

This keyboard device comprises: a frame; keys that each rotate about a key fulcrum with respect to the frame; a first guide that includes a first member connected to the frame or the keys, a slide member having at least one projection and being attached to the first member, and a second member which slides with the projection when the keys rotate with respect to the frame; a second guide that includes a key guide connected to the keys and a frame guide connected to the frame so as to slide with the key guide and that is provided below the first guide; and a third guide that regulates, at a position behind the first and second guides, movement of the keys in the scale direction, wherein the three positions of the key fulcrum, the first guide, and the second guide, or the three positions of the first, second, and third guides are provided so as not to be aligned in the same straight line when viewed from a direction in which the keys are adjacent to each other.

Description

Keyboard device

The present invention relates to a keyboard device.

The keyboard device has a plurality of keys arranged side by side. The accuracy of the arrangement of multiple keys has a large effect on the aesthetics of the instrument. For this reason, if the key shape is deformed due to a manufacturing error, the aesthetics of the musical instrument is reduced as it is. Therefore, even when a manufacturing error occurs, a technique related to a key guide connected to a frame for adjusting the key position has been developed (for example, Patent Document 1). Among the key guides, the key guide arranged at a position close to the performer side not only arranges the arrangement of a plurality of keys, but also affects the feeling that the performer receives from the finger during performance (hereinafter referred to as touch feeling). .

Japanese Patent No. 3846426

In an electronic keyboard instrument such as an electronic piano, generally, a key is rotatably supported by a frame on the rear end side (back side as viewed from the performer) of the key. The amount that can be pressed on the front end side of the key is designed in accordance with the acoustic piano. On the other hand, the position where the key is supported by the frame, that is, the rotation center of the key is closer to the performer than the rotation center of the key in the acoustic piano.

According to this configuration, the length of the key can be shortened, and the size of the electronic keyboard instrument in the depth direction can be reduced. In this case, since the position of the center of rotation of the key of the electronic keyboard instrument and the key of the acoustic piano are different, the feeling at the time of key pressing changes. On the other hand, when the key of the electronic keyboard instrument is lengthened and the rotation center of the key is moved to the back side, the size of the electronic keyboard instrument in the depth direction increases. In addition, the longer the key, the greater the influence of deformation due to manufacturing errors and changes over time. For example, when the key is bent in the scale direction, the influence of deformation on the scale direction is greater for a longer key than for a shorter key.

One of the objects of the present invention is to reduce the influence of deformation even if the key is deformed.

A keyboard device according to the present invention is attached to a frame, a key that rotates with respect to the frame around a key fulcrum, a first member connected to the frame or the key, the first member, A first guide comprising: a sliding member having at least one protrusion; a second member that slides with the protrusion when the key rotates with respect to the frame; and a key guide connected to the key. And a frame guide connected to the frame and sliding with the key guide, a second guide provided below the first guide, and behind the first and second guides, A third guide for restricting the movement of the key in the scale direction, and three locations of the key fulcrum, the first guide, and the second guide, or the first, second, and second 3 places of 3 guides The key is provided so as not aligned in collinear when viewed from a direction adjacent. In addition, the position and number of protrusions are not particularly limited.

The first member may be connected to the frame, and the second member may be connected to the key.

The first member may protrude upward with respect to the frame.

The protrusion may be provided on the upper end of the sliding member.

The sliding member in a region where the protrusion is provided may be movable in a first direction in which the protrusion protrudes.

The sliding member may have a first stopper that restricts movement of the sliding member in the second direction at a position different from the protrusion in the second direction in which the key extends.

The sliding member may include a second stopper that restricts the movement of the sliding member in a third direction orthogonal to the first direction and the second direction.

The sliding member may have a buffer portion that extends in a first direction in which the protrusion protrudes and relaxes a collision between the key and the frame when the key is pressed.

The sliding member may be softer than the frame or the key.

The key guide may be integral with the key, and the frame guide may be integral with the frame.

The frame guide may protrude in a second direction in which the key extends with respect to the frame.

The first member may be inserted inside the second member, and the key guide may be sandwiched between the frame guides.

A pair of the protrusions may be provided, and the protrusions may protrude in directions opposite to each other in the direction in which the keys are adjacent.

The first member may be inserted inside the second member, and the pair of protrusions may be configured to slide on opposing wall surfaces of the second member.

The second member may be inserted inside the first member, and the pair of protrusions may be configured to slide with the second member interposed therebetween.

The three points of the key fulcrum, the first guide, and the second guide can be provided so that they are not aligned on the same straight line when viewed from the adjacent direction. The three portions of the second and third guides can be provided so that they are not aligned on the same straight line when viewed from the adjacent direction of the keys.

According to the present invention, even if the key is deformed, the influence of the deformation can be reduced.

It is a figure which shows the structure of the keyboard apparatus in one Embodiment of this invention. It is a block diagram which shows the structure of the sound source device in one Embodiment of this invention. It is explanatory drawing at the time of seeing the structure inside the housing | casing in one Embodiment of this invention from the side surface. It is explanatory drawing at the time of seeing the keyboard assembly in one Embodiment of this invention from the upper surface. It is the side view and perspective view explaining the detailed structure of the key in one Embodiment of this invention. It is a perspective view explaining the detailed structure of the flame | frame in one Embodiment of this invention. It is a perspective view explaining the detailed structure of the 1st frame guide and 2nd frame guide in one Embodiment of this invention. It is a perspective view explaining the detailed structure of the sliding member in one Embodiment of this invention. It is a perspective view explaining the state where the sliding member was attached to the 1st frame guide in one Embodiment of this invention. It is a side view explaining the state where the sliding member was attached to the 1st frame guide in one Embodiment of this invention. It is an enlarged side view of the 1st guide and 2nd guide in one Embodiment of this invention. It is AA 'sectional drawing of the 1st guide in one Embodiment of this invention. It is BB 'sectional drawing of the 2nd guide in one Embodiment of this invention. It is sectional drawing explaining operation | movement of a key and a guide in the keyboard assembly in one Embodiment of this invention. It is sectional drawing of the 1st guide at the time of key pressing. It is sectional drawing of the 1st guide in one Embodiment of this invention. It is sectional drawing of the 1st guide in one Embodiment of this invention. It is sectional drawing of the 1st guide in one Embodiment of this invention. It is sectional drawing of the 1st guide in one Embodiment of this invention. It is sectional drawing of the 1st guide in one Embodiment of this invention. It is sectional drawing of the 1st guide in one Embodiment of this invention. It is a top view of the 1st guide in one embodiment of the present invention.

Hereinafter, a keyboard device according to an embodiment of the present invention will be described in detail with reference to the drawings. The following embodiments are examples of embodiments of the present invention, and the present invention should not be construed as being limited to these embodiments. Note that in the drawings referred to in the present embodiment, the same portion or a portion having a similar function is denoted by the same reference symbol or a similar reference symbol (a reference symbol simply including A, B, etc. after a number) and repeated. The description of may be omitted. In addition, the dimensional ratios of the drawings (the ratios between the components, the ratios in the vertical and horizontal height directions, etc.) may be different from the actual ratios for convenience of explanation, or some of the configurations may be omitted from the drawings.

<First Embodiment>
[Configuration of keyboard device]
FIG. 1 is a diagram showing a configuration of a keyboard device according to an embodiment of the present invention. In this example, the keyboard device 1 is an electronic keyboard instrument that emits sound in response to a user (player) key depression such as an electronic piano. Note that the keyboard device 1 may be a keyboard-type controller that outputs control data (for example, MIDI) for controlling an external sound source device in response to a key depression. In this case, the keyboard device 1 may not have a sound source device.

The keyboard device 1 includes a keyboard assembly 10. The keyboard assembly 10 includes a white key 100w and a black key 100b. A plurality of white keys 100w and black keys 100b are arranged side by side. The number of keys 100 is N, which is 88 in this example. A direction in which a plurality of white keys 100w and black keys 100b are arranged is referred to as a scale direction. When the white key 100w and the black key 100b can be described without particular distinction, the key 100 may be referred to. Also in the following description, when “w” is added to the end of the reference sign, it means that the configuration corresponds to the white key. Further, when “b” is added at the end of the code, it means that the configuration corresponds to the black key.

A part of the keyboard assembly 10 exists inside the housing 90. In other words, the housing 90 covers a part of the white key 100w and the black key 100b. When the keyboard device 1 is viewed from above, a portion of the keyboard assembly 10 covered by the casing 90 is referred to as a non-appearance portion NV, and a portion exposed from the casing 90 and visible to the user is referred to as an appearance portion PV. . That is, the appearance part PV is a part of the key 100 and indicates an area where the user can perform a performance operation. Hereinafter, a portion of the key 100 that is exposed by the appearance portion PV may be referred to as a key body portion.

Inside the housing 90, a sound source device 70 and a speaker 80 are arranged. The tone generator 70 generates a sound waveform signal when the key 100 is pressed. The speaker 80 outputs the sound waveform signal generated in the sound source device 70 to an external space. The keyboard device 1 may be provided with a slider for controlling the volume, a switch for switching timbres, a display for displaying various information, and the like.

In the description of the present specification, directions such as up, down, left, right, front, and back indicate directions when the keyboard device 1 is viewed from the performer when performing. Therefore, for example, the non-appearance part NV can be expressed as being located on the back side with respect to the appearance part PV. Further, the direction may be indicated with the key 100 as a reference, such as the front end side (key front side) and the rear end side (key rear side). In this case, the key front end side indicates the front side as viewed from the performer with respect to the key 100. The rear end side of the key indicates the back side viewed from the performer with respect to the key 100. According to this definition, the black key 100b can be expressed as a portion protruding upward from the white key 100w from the front end to the rear end of the key body of the black key 100b.

FIG. 2 is a block diagram showing a configuration of a sound source device according to an embodiment of the present invention. The sound source device 70 includes a signal conversion unit 710, a sound source unit 730, and an output unit 750. The sensor 300 is provided corresponding to each key 100, detects a key operation, and outputs a signal corresponding to the detected content. In this example, the sensor 300 outputs a signal according to the key depression amount in three stages. The key pressing speed can be detected according to the interval of this signal.

The signal conversion unit 710 acquires the output signal of the sensor 300 (sensors 300-1, 300-2,..., 300-88 corresponding to the 88 key 100), and operates according to the operation state of each key 100. Generate and output a signal. In this example, the operation signal is a MIDI signal. Therefore, the signal conversion unit 710 outputs note-on according to the key pressing operation. At this time, the key number indicating which of the 88 keys 100 has been operated and the velocity corresponding to the key pressing speed are also output in association with the note-on. On the other hand, in response to the key release operation, the signal conversion unit 710 outputs the key number and note-off in association with each other. A signal corresponding to another operation such as a pedal may be input to the signal conversion unit 710 and reflected in the operation signal.

The sound source unit 730 generates a sound waveform signal based on the operation signal output from the signal conversion unit 710. The output unit 750 outputs the sound waveform signal generated by the sound source unit 730. This sound waveform signal is output to, for example, the speaker 80 or the sound waveform signal output terminal.

[Configuration of keyboard assembly]
FIG. 3 is an explanatory diagram when the internal structure of the housing according to the embodiment of the present invention is viewed from the side. In the following description, the black key 100b will be described. However, for convenience of description, it is simply referred to as the key 100. As shown in FIG. 3, the keyboard assembly 10 and the speaker 80 are disposed inside the housing 90. The speaker 80 is disposed on the back side of the keyboard assembly 10. The speaker 80 is arranged so as to output a sound corresponding to the key depression toward the upper side and the lower side of the housing 90. The sound output downward advances from the lower surface side of the housing 90 to the outside. On the other hand, the sound output upward passes through the space inside the keyboard assembly 10 from the inside of the housing 90, and is externally transmitted from the gap between the adjacent keys 100 in the exterior portion PV or the gap between the key 100 and the housing 90. Proceed to

The configuration of the keyboard assembly 10 will be described with reference to FIG. The keyboard assembly 10 includes a connection portion 180, a hammer assembly 200, and a frame 500 in addition to the key 100 described above. The frame 500 is fixed to the housing 90. The connection unit 180 connects the key 100 so as to be rotatable with respect to the frame 500. The connecting portion 180 includes a plate-like flexible member 181, a key-side support portion 183, and a rod-like flexible member 185. The plate-like flexible member 181 extends from the rear end of the key 100 toward the key rear end side. The key side support portion 183 extends rearward from the rear end of the plate-like flexible member 181. The rod-like flexible member 185 is supported by the key side support portion 183 and the frame side support portion 585 of the frame 500. That is, a rod-shaped flexible member 185 is disposed between the key 100 and the frame 500. The key 100 can be rotated with respect to the frame 500 by bending the rod-shaped flexible member 185. The rod-shaped flexible member 185 is configured to be attachable to and detachable from the key side support portion 183 and the frame side support portion 585. The keyboard assembly 10 is a resin-made structure whose most configuration is manufactured by injection molding or the like. The rod-like flexible member 185 may be configured so as not to be attached or detached integrally with the key side support portion 183 and the frame side support portion 585, or by bonding or the like.

As shown in FIG. 5, the key 100 includes a first key guide 151, a second key guide 153, and a side key guide 155. In other words, the first key guide 151, the second key guide 153, and the side key guide 155 are connected to the key 100. As shown in FIG. 6, the frame 500 includes a first frame guide 511, a second frame guide 513, and a side frame guide 515. In other words, the first frame guide 511, the second frame guide 513, and the side frame guide 515 are connected to the frame 500. The first key guide 151 slides with the first frame guide 511. The second key guide 153 slides with the second frame guide 513. The side key guide 155 slides with the side frame guide 515. The first guide 51 is a concept including a first key guide 151 and a first frame guide 511. The second guide 53 is a concept including a second key guide 153 and a second frame guide 513. The third guide 55 is a concept including a side key guide 155 and a side frame guide 515. The first guide 51, the second guide 53, and the third guide 55 are guides that regulate the position of the key 100 in the scale direction and the operation direction of the key 100 when the key is released. These three guides 51 to 53 are not arranged on the same straight line when the key 100 is viewed in the scale direction. More specifically, as shown in FIG. 3, there is no second guide 53 on the straight line L3 that generally connects the third guide 55 and the first guide 51, and the third guide 53 and the second guide 53 are not connected. There is no first guide 51 on a straight line L4 that substantially connects the guide 53. According to at least three guides arranged in this way, the movement of the key 100 can be restricted in the scale direction, yawing direction, and rolling direction.

The first key guide 151 is slidably in contact with the first frame guide 511 while covering the first frame guide 511. In other words, the first key guide 151 is slidably in contact with the first frame guide 511 extending upward from the frame 500 from both sides in the scale direction. Although details will be described later, a sliding member 600 is attached to the first frame guide 511. The sliding member 600 slides with the first key guide 151. The sliding member 600 is included in the first guide 51.

The second key guide 153 is slidably in contact with the second frame guide 513. In other words, the second key guide 153 is sandwiched from both sides in the scale direction by the second frame guide 513 extending from the frame 500 to the key front end side, and slidably contacts the second frame guide 513. The second guide 53 is arranged on the key front end side and below the first guide 51.

The side key guide 155 is slidably in contact with the side frame guide 515. In other words, the side key guide 155 is slidably in contact with the side frame guide 515 extending upward from the frame 500 from both sides in the scale direction.

The first guide 51 and the second guide 53 are arranged in an area exposed from the housing 90. The third guide 55 is disposed in an area covered by the housing 90. That is, the first guide 51 and the second guide 53 are arranged at a position corresponding to the appearance part PV, and the third guide 55 is arranged in a region corresponding to the non-appearance part NV. The 3rd guide 55 exists in the key front end side rather than the connection part 180 (plate-shaped flexible member 181). However, the 3rd guide 55 may be arrange | positioned in the area | region corresponding to the external appearance part PV. Note that the third guide that restricts the movement of the key 100 in the scale direction may be provided at another position, or may be the same as a key fulcrum described later.

The hammer assembly 200 is attached to the frame 500 so as to be rotatable. At this time, the shaft support portion 220 of the hammer assembly 200 and the rotation shaft 520 of the frame 500 are slidably contacted at at least three points. The front end portion 210 of the hammer assembly 200 contacts the inner space of the hammer support portion 120 so as to be slidable in the front-rear direction. This sliding portion, that is, the portion where the front end portion 210 and the hammer support portion 120 are in contact is located below the key 100 in the appearance portion PV (the key front end side with respect to the rear end of the key body portion).

The hammer assembly 200 includes a metal weight portion 230 on the back side of the rotation shaft 520. In a normal state (when the key is not pressed), the weight portion 230 is placed on the lower stopper 410, and the front end portion 210 of the hammer assembly 200 pushes the key 100 back. When the key is depressed, the weight portion 230 moves upward and collides with the upper stopper 430. The hammer assembly 200 applies weight to the key depression by the weight portion 230. The lower stopper 410 and the upper stopper 430 are formed of a buffer material or the like (nonwoven fabric, elastic body, etc.).

The sensor 300 is attached to the frame 500 below the hammer support portion 120 and the front end portion 210. When the sensor 300 is crushed on the lower surface side of the front end portion 210 by the key depression, the sensor 300 outputs a detection signal. As described above, the sensor 300 is provided corresponding to each key 100.

FIG. 4 is an explanatory diagram when the keyboard assembly according to the embodiment of the present invention is viewed from above. As shown in FIG. 4, the key side support portion 183b of the black key 100b is disposed closer to the key rear end side than the key side support portion 183w of the white key 100w. This position is related to the positions of the rod-like flexible members 185w and 185b that are the rotation center of the key 100. By arranging in this way, the difference between the rotation center of the white key and the black key of the acoustic piano is reproduced. In this example, the plate-like flexible member 181b corresponding to the black key 100b is longer than the plate-like flexible member 181w corresponding to the white key 100w. Corresponding to such an arrangement, the frame side support portion 585b of the frame 500 is arranged closer to the key rear end side than the frame side support portion 585w. Therefore, the shape of the key rear end side (frame side support portion 585) of the frame 500 is a shape in which the frame side support portion 585b protrudes further back than the frame side support portion 585w.

In FIG. 4, the configurations of the hammer assembly 200 and the frame 500 located below the key 100 are omitted. Specifically, the configuration of the frame 500 in the vicinity of the connection portion 180 (such as the frame side support portion 585) is described, and a part of the configuration on the near side is omitted. In other descriptions, some descriptions may be omitted in the drawing.

[Key structure]
FIG. 5 is a side view and a perspective view illustrating the detailed structure of the key in one embodiment of the present invention. FIG. 5A shows the key 100 as viewed from the side. FIG. 5B is a view of the key 100 as viewed obliquely from below. Here, although the black key will be described, the structure of the black key can be applied to the white key. As shown in FIG. 5, the key 100 is connected to the frame side support portion 585 via the connection portion 180.

First, the directions (scale direction, rolling direction, yawing direction, vertical direction) used in the following description are defined. As described above, the scale direction corresponds to the direction in which the keys 100 are arranged (the left-right direction as viewed from the performer). The rolling direction corresponds to the direction of rotation about the direction in which the key 100 extends (from the front to the back as viewed from the performer). The yawing direction is a direction that bends in the left-right direction when the key 100 is viewed from above. Although the difference between the scale direction and the yawing direction is not large, the movement of the key 100 in the scale direction means the parallel movement, whereas the movement of the key 100 in the yawing direction bends (warps) in the scale direction. Equivalent to. The vertical direction corresponds to the direction in which the rod-shaped flexible member 185 extends (the vertical direction as viewed from the performer) and can be said to be the direction that becomes the axis of bending in the yawing direction.

The key 100 includes a first key guide 151, a second key guide 153, and a side key guide 155. In FIG. 5, the first key guide 151, the second key guide 153, and the side key guide 155 are integrally formed, but each is formed as a separate member and bonded or fixed to the key 100. Also good.

The first key guide 151 is provided on the front side of the key 100 on the inner side of the recess 150 where the lower side of the key 100 is opened. A stepped portion 157 is provided in the recessed portion 150 of the key 100. The width in the scale direction of the recess 150 on the key front end side with respect to the stepped portion 157 is narrower than the width in the scale direction of the recess 150 on the key rear end side with respect to the stepped portion 157. The first key guide 151 is closer to the key front end (player side) than the stepped portion 157. In a state where the first frame guide 511 is inserted into the recess 150 of the key 100, the first key guide 151 and the first frame guide 511 slide. That is, the first key guide 151 is a part of the inner wall of the recess 150.

The second key guide 153 extends below the key 100 at the front end of the key 100. The second key guide 153 has a plate-like portion. The upper end of the second key guide 153 enters the recess 150 and is connected to both side walls of the recess 150 in the scale direction. With this structure, the mechanical strength of the second key guide 153 with respect to the scale direction is improved. With the second key guide 153 sandwiched between the second frame guides 513, the second key guide 153 and the second frame guide 513 slide. A hammer support 120 is connected below the second key guide 153.

The side key guide 155 is provided at a position corresponding to the non-appearance part NV of the key 100. The shape of the side key guide 155 is a plate shape in which a part of the side surface of the key 100 in the longitudinal direction of the key is recessed in the scale direction. With the side key guide 155 sandwiched between the side frame guides 515, the side key guide 155 and the side frame guide 515 slide.

The plate-like flexible member 181 is a plate-like member having flexibility in the yawing direction. The plate-like flexible member 181 is arranged so that the normal direction of the plate surface is directed to the scale direction. Thus, the plate-like flexible member 181 can be deformed in the rolling direction and the yawing direction by bending or twisting. That is, the plate-like flexible member 181 has a degree of freedom in the rolling direction and yawing direction of the key 100 due to its flexibility. By combining deformation in the yawing direction, it can be said that the plate-like flexible member 181 also has a degree of freedom in the scale direction. On the other hand, the plate-like flexible member 181 hardly deforms in the vertical direction. Note that the normal direction of the plate-like flexible member 181 does not have to be completely coincident with the scale direction, as long as it has a component in the scale direction. When the normal direction of the plate-like flexible member 181 does not coincide with the scale direction, the angle formed by the normal direction and the scale direction is preferably as small as possible.

The rod-like flexible member 185 is a rod-like member having flexibility. The rod-like flexible member 185 includes the rotation center (key fulcrum) of the key 100 when the key is depressed. The rod-shaped flexible member 185 can be deformed in the rolling direction and the yawing direction by bending or twisting. That is, the bar-shaped flexible member 185 has a degree of freedom in the rolling direction and yawing direction of the key 100 due to its flexibility. By combining the deformation in the rolling direction, it can be said that the rod-shaped flexible member 185 also has a degree of freedom in the scale direction. On the other hand, the bar-shaped flexible member 185 hardly deforms in the vertical direction. Note that the rod-shaped flexible member 185 can be twisted more than the plate-shaped flexible member 181 because of its shape characteristics.

The cross-sectional shape of the rod-like flexible member 185 (the cross-section perpendicular to the longitudinal direction of the rod-like shape) is a shape surrounded by a combination of a curve and a straight line, and in this example is a semicircular shape. In the semicircular shape, the straight line portion is the back side and the curved portion is the near side, but may be in the opposite direction. In addition, the cross-sectional shape of the rod-shaped flexible member 185 may be a shape surrounded only by a curve (for example, a circular shape) or a shape surrounded only by a straight line (for example, a rectangular shape). That is, the rod-shaped flexible member 185 can be bent and deformed in directions other than the longitudinal direction (vertical direction) of the rod-shaped flexible member 185 (two directions among three directions defining three dimensions), and The cross-sectional shape may be any shape as long as twisting deformation about the longitudinal direction is possible. The rod-like flexible member 185 may have a thickness that changes along the longitudinal direction, such as a cone shape.

In the above configuration, the key fulcrum (rod-shaped flexible member 185), the first guide 51, and the second guide 53 are located at three locations that are not aligned on the same straight line when the key 100 is viewed in the scale direction. The movement of the key 100 is restricted. That is, since the first guide 51 is disposed above the second guide 53, the key fulcrum, the first guide 51, and the second guide 53 are the same when viewed from the scale direction. It is not on a straight line. More specifically, as shown in FIG. 3, there is no second guide 53 on a straight line L1 that generally connects the key fulcrum and the first guide 51, and the key fulcrum and the second guide 53 are approximately There is no first guide 51 on the connected straight line L2.

[Frame structure]
FIG. 6 is a perspective view illustrating the detailed structure of the frame in one embodiment of the present invention. The frame 500 includes a first frame guide 511, a second frame guide 513, a side frame guide 515, and a tip frame guide 521. The frame 500 includes a first rib 540, a first wall portion 542, a support column 544, a second rib 550, a third rib 551, a second wall portion 552, and a third wall portion 554. The plurality of first frame guides 511 and the plurality of second frame guides 513 are connected by a column 544. The first frame guide 511 protrudes upward from the support column 544. The second frame guide 513 protrudes from the support column 544 to the key front end side. The first frame guide 511 and the second frame guide 513 are arranged corresponding to the black key 100b. However, the first frame guide 511 and the second frame guide 513 may be arranged corresponding to the white key 100w. The above-mentioned “rib” and “wall” are both plate-like members, but “rib” is a plate-like member extending in a direction parallel to the longitudinal direction of the key 100, and “wall” is a key. A plate-like member extending in a direction orthogonal to the longitudinal direction of 100.

The side frame guide 515 is disposed between the adjacent keys 100. At a position where the white key 100w and the black key 100b are adjacent (for example, between A and B), the side frame guide 515 contacts both the white key 100w and the black key 100b. At a position where the white keys 100w are adjacent to each other (for example, between B and C), the side frame guide 515 contacts only the white key 100w. Since the side surface frame guide 515 is disposed between the adjacent keys 100, even when the keys 100 move in the scale direction in the non-appearance portion NV, it is possible to suppress the adjacent keys 100 from contacting each other. .

The first rib 540 is provided between the hammer assemblies 200 arranged adjacent to each other. In other words, the hammer assembly 200 is disposed in a space partitioned by the first rib 540. The plurality of first ribs 540 are connected by the support columns 544 and the first wall portion 542. The second wall portion 552 is provided at a position facing the first wall portion 542. The second wall portion 552 is connected to the third wall portion 554. The first wall portion 542 and the second wall portion 552 are connected by the second rib 550 and the third rib 551. The second rib 550 has a larger plate-like area and higher rigidity than the third rib 551. A circuit board on which the sensor 300 is formed is disposed between the first wall portion 542 and the second wall portion 552. The distal end frame guide 521 is connected by a third wall portion 554. The distal end frame guide 521 is disposed corresponding to the white key 100w. However, the front end frame guide 521 may be arranged corresponding to the black key 100b.

[Frame guide structure]
FIG. 7 is a perspective view illustrating the detailed structure of the first frame guide and the second frame guide in one embodiment of the present invention. In the following description, the scale direction is the first direction D1, the longitudinal direction of the key 100 is the second direction D2, and the direction orthogonal to the plane including the first direction D1 and the second direction D2 is the third direction D3. The above three directions correspond to the x-axis, y-axis, and z-axis of the orthogonal coordinate system. In the xyz axis, when defining the orientation, the opposite direction of the first direction D1 is the first direction D4, the opposite direction of the second direction D2 is the second direction D5, and the opposite direction of the third direction D3 is the third direction D6. . Note that the third direction D3 can be simply referred to as upward.

As shown in FIG. 7, the first frame guide 511 protrudes from the support column 544 in the third direction D3. In other words, the first frame guide 511 protrudes in the third direction D3 with respect to the frame 500. A pair of first concave portions 5111 facing the first direction D1 and the fourth direction D4 and a second concave portion 5115 facing the second direction D2 are provided at the distal end portion of the first frame guide 511, respectively. A curved surface 5113 is provided at the end of each side wall of each first recess 5111. In FIG. 7, the first frame guide 511 is formed integrally with the frame 500, but each may be formed as a separate member and bonded to the frame 500.

The second frame guide 513 protrudes from the support column 544 in the second direction D2. The second frame guide 513 has a pair of protrusions 5130 protruding in the second direction D2, and a third recess 5131 is provided therebetween. Each protrusion 5130 of the second frame guide 513 is provided with a protrusion 5133 that protrudes toward the inside of the third recess 5131. A reinforcing member 5137 is provided at the bottom of the third recess 5131 to connect the protruding portions 5130 facing each other in the third recess 5131. Reinforcing members 5135 are provided on both sides of the second frame guide 513 in the first directions D1 and D4. The reinforcing member 5135 connects the support column 544 and the protrusion 5130 of the second frame guide 513.

As described above, since the reinforcing member 5137 and the reinforcing member 5135 are provided, a change in the interval between the third recesses 5131 is suppressed. In other words, the change in the interval between the two protrusions 5133 is suppressed. Thereby, rattling of the front end of the key 100 in the first direction D1 can be suppressed. If sufficient strength of the second frame guide 513 is ensured, the reinforcing

members

5135 and 5137 may not be provided separately from the second frame guide 513. In FIG. 7, the second frame guide 513 is formed integrally with the frame 500, but each may be formed as a separate member and bonded to the frame 500.

In the present embodiment, the configuration in which the first frame guide 511 protrudes from the support column 544 in the third direction D3 and the second frame guide 513 protrudes from the support column 544 in the second direction D2 is exemplified, but the present invention is not limited to this configuration. The first frame guide 511 and the second frame guide 513 may be provided so as to satisfy the condition that the key fulcrum, the first guide 51, and the second guide 53 are not aligned on a straight line when viewed from the scale direction. . For example, the first frame guide 511 may protrude from the support column 544 in the third direction D3 (upward), and the second frame guide 513 may protrude from the support column 544 in the third direction D6 (downward). As another example, the first frame guide 511 may protrude from the column 544 in the second direction D2 (key forward), and the second frame guide 513 may protrude from the column 544 in the third direction D6 (downward). Thus, for example, both frame guides 511 and 531 may be arranged at different positions in the vertical direction.

[Structure of sliding member]
FIG. 8 is a perspective view illustrating the detailed structure of the sliding member according to the embodiment of the present invention. As shown in FIG. 8, the sliding member 600 includes a main body portion 610, a protrusion 620, a first stopper 630, a second stopper 640, and a buffer portion 650. The sliding member 600 has flexibility. The sliding member 600 is attached to the first frame guide 511 using this flexibility. As the sliding member 600, a member softer than the key 100 or the frame 500 can be used. That is, the Young's modulus of the sliding member 600 is smaller than the Young's modulus of the key 100 or the frame 500. As the sliding member 600, for example, a cushioning material such as an elastic body or a nonwoven fabric can be used. As the elastic body, for example, rubber such as nitrile rubber (NBR) or ethylene / propylene / diene rubber (EPDM), or elastomer can be used.

The main body 610 has a shape arranged along the side wall of the first frame guide 511, and has a length in the third direction D3. The main body 610 is arranged along three side walls of the four side walls of the first frame guide 511. That is, one end 612 of the main body 610 is opened. One side end 612 of the main body 610 has flexibility in the first directions D1 and D4. The protrusions 620 are provided on both sides of the sliding member 600 in the first directions D1 and D4, and protrude toward both sides of the first directions D1 and D4, respectively. The protrusion 620 is provided above the main body 610. In the example of FIG. 8, the protrusion 620 is provided on the upper end of the sliding member 600. The protrusion 620 is movable in the first directions D1 and D4. In the present embodiment, the sliding member 600 has flexibility, and a first stopper 630, which will be described later, is provided at a position different from the protrusion 620 in the second direction D2. The interval between the protrusions 620 provided on the surface is variable. Note that the position of the protrusion 620 is not limited to the position above the main body 610, and can be changed as appropriate depending on the positional relationship between the first key guide 151 and the first frame guide 511 at the time of key depression and key release.

The first stopper 630 is provided above the main body 610. In the example of FIG. 8, the first stopper 630 is provided at the upper end of the sliding member 600. The first stopper 630 connects opposing side walls of the main body 610. The second stopper 640 is provided below the main body 610. In the example of FIG. 8, the second stopper 640 is provided at the lower end of the sliding member 600. The second stopper 640 is bent from the tip of one side wall on the second direction D5 side among the side walls of the main body 610. The second stopper 640 is provided with an opening 642. One of the side walls of the opening 642 functions as a locking portion 644. The functions of the first stopper 630 and the second stopper 640 will be described in detail later.

The buffer portion 650 extends from the main body 610 in the first directions D1 and D4 on both sides of the main body 610. The buffer portion 650 is provided with a contact portion 652 that protrudes from the buffer portion 650 in the third direction D3. The buffer portion 650 and the contact portion 652 alleviate the collision between the key 100 and the support column 544 when the key 100 is pressed with a strong force. Since the abutment portion 652 protrudes in the third direction, the key 100 first comes into contact with the abutment portion 652 when a key is pressed, so that the collision sound between the key 100 and the buffer portion 650 can be reduced. it can. In FIG. 8, the configuration in which the contact portion 652 is provided at the end portion in the second direction D5 of the buffer portion 650 is illustrated, but may be provided at other positions. A plurality of contact portions 652 may be provided above the buffer portion 650.

[Mounting structure of sliding member to first frame guide]
FIG. 9 is a perspective view illustrating a state in which the sliding member is attached to the first frame guide according to the embodiment of the present invention. As shown in FIG. 9, the first stopper 630 is disposed inside the first recess 5111 in a state where the sliding member 600 is attached to the first frame guide 511. Since the first stopper 630 is locked to the inner wall of the first recess 5111, the movement of the sliding member 600 in the second direction D5 is restricted. Although FIG. 9 shows a configuration in which the first stopper 630 is disposed in the first recess 5111, the present invention is not limited to this configuration. For example, instead of the first recess 5111, the first frame guide 511 is provided with a stepped portion that is locked by the first stopper 630 when the sliding member 600 tries to move in the second direction D5. May be.

7 to 9 exemplify a configuration in which the first recess 5111 is provided at the upper end of the first frame guide 511 and the first stopper 630 is provided at the upper end of the sliding member 600, but the present invention is not limited to this configuration. As described above, if the movement of the sliding member 600 in the second direction D5 is restricted, the shapes and attachment positions of the first recess 5111 and the first stopper 630 can be changed as appropriate.

When removing the sliding member 600 from the first frame guide 511, a pin is inserted from the second recess 5115 below the first stopper 630, and the sliding member 600 is lifted while lifting the first stopper 630 upward by the pin. What is necessary is just to move to the 2nd direction D5.

As shown in FIG. 9, in a state where the sliding member 600 is attached to the first frame guide 511, the protrusions 620 provided at both ends in the first directions D1 and D4 are in contact with the first frame guide 511, respectively. . As described above, the sliding member 600 in the region where the protrusions 620 are provided has flexibility in the first directions D1 and D4. Here, due to variations in the shapes of the first frame guide 511 and the sliding member 600, the width of the first frame guide 511 in the first direction D1 may not match the distance between the two protrusions 620. For example, when the width of the first frame guide 511 is smaller than the interval between the two protrusions 620, a gap is generated between the first frame guide 511 and the protrusion 620. In this case, if the region where the projection 620 of the sliding member 600 is provided does not have flexibility in the first directions D1 and D4, the sliding member 600 will rattle against the first frame guide 511. . As a result, the key 100 is wobbled. However, even if the region where the protrusion 620 of the flexible sliding member 600 is provided is bent in the first directions D1 and D4, the first frame guide 511 and the protrusion 620 The gap between them disappears. As a result, rattling of the sliding member 600 with respect to the first frame guide 511 can be suppressed.

9, the buffer portion 650 is in contact with the column 544. However, the buffer portion 650 may not be in contact with the support column 544.

FIG. 10 is a side view illustrating a state in which the sliding member is attached to the first frame guide according to the embodiment of the present invention. As shown in FIG. 10, in a state where the sliding member 600 is attached to the first frame guide 511, the second stopper 640 contacts the column 544 from below. Further, the second stopper 640 is locked to a protruding portion 5117 provided at the lower portion of the column 544. Specifically, the protruding portion 5117 is disposed inside the opening 642 shown in FIG. 8, and the locking portion 644 is locked to the protruding portion 5117. The second stopper 640 restricts the movement of the sliding member 600 in the third direction D3. The protrusion 5117 restricts the movement of the second stopper 640 in the second direction D5. With these configurations, the second stopper 640 suppresses the sliding member 600 from moving in the third direction D3 and being detached from the first frame guide 511.

In addition, in FIG. 10, although the structure which the protrusion part 5117 penetrates the opening part 642 was illustrated, the protrusion part 5117 does not need to penetrate the opening part 642. FIG. Although the configuration in which the second stopper 640 is provided at the lower end of the sliding member 600 is illustrated, it is not limited to this configuration. As described above, if the movement of the sliding member 600 in the third direction D3 is restricted, the shape and the mounting position of the second stopper 640 can be changed as appropriate.

FIG. 11 is an enlarged side view of the first guide and the second guide in the embodiment of the present invention. FIG. 12 is a cross-sectional view taken along line AA ′ of the first guide according to the embodiment of the present invention. FIG. 13 is a BB ′ cross-sectional view of the second guide according to the embodiment of the present invention.

11 and 12, in the first guide 51, the first frame guide 511 and the sliding member 600 are both inserted inside the first key guide 151. In this state, the sliding member 600 is attached to the first frame guide 511, and the protrusion 620 provided on the sliding member 600 protrudes from the first frame guide 511 toward the first key guide 151. When the key is released, the protrusion 620 provided on the sliding member 600 slides with the first key guide 151. When the key 100 is viewed from the scale direction, the sliding area where the first key guide 151 and the protrusion 620 slide is smaller than the area where the first key guide 151 and the first frame guide 511 overlap. The protrusion 620 is a continuous sliding portion, and the first key guide 151 is an intermittent sliding portion. A distance L1 between both end portions of the buffer portion 650 in the first direction D1 is longer than a width L2 of the key 100 in the first direction D1. This length relationship ensures that the key 100 contacts the buffer 650 when the key 100 is depressed.

In other words, the first guide 51 is locked to the first member connected to the frame 500, the sliding member 600 attached to the first member and having the protrusion 620, and the frame 500. A second member that slides with the protrusion 620 when the 100 rotates is provided. In the above structure, the first member is the first frame guide 511 and the second member is the first key guide 151.

As shown in FIG. 12, the side wall of the first frame guide 511 has a gentle slope. Specifically, in the first direction D1, the width L4 of the first frame guide 511 in the region far from the support column 544 is smaller than the width L3 of the first frame guide 511 in the region close to the support column 544. When the frame 500 is formed by injection molding, the molten resin is injected into the mold, and after holding the pressure, the mold is opened. In the mold opening process, when the mold is opened toward the third direction D3 in FIG. 12, the width of the first frame guide 511 in the first direction D1 is set to be a column to smoothly open the mold. It gradually decreases as the distance from 544 increases.

In the keyboard device 1, the first key guide 151 is required to slide smoothly with the first frame guide 511 in order to provide a natural touch feeling to the performer. Therefore, it is preferable to reduce the sliding area between the first key guide 151 and the first frame guide 511. One means for reducing the sliding area is a means for providing a protrusion on the outer wall of the first frame guide 511 protruding from the frame 500 or the inner wall of the recess 150 of the key 100. However, as described above, when the frame 500 is formed by injection molding, it is difficult to provide a protrusion on the upper portion of the first frame guide 511 that protrudes upward from the frame 500.

According to the keyboard device 1 according to the first embodiment, the protrusion 620 can be attached to the upper portion of the first frame guide 511 by attaching the sliding member 600 to the first frame guide 511. As a result, the sliding area between the first frame guide 511 and the first key guide 151 can be reduced. Furthermore, even if a deviation occurs between the design dimension of the first frame guide 511 and the design dimension of the first key guide 151, the above design dimension can be obtained by adjusting the shape of the sliding member 600. The deviation can be compensated.

11 and 13, in the second guide 53, the second key guide 153 is sandwiched between the second frame guides 513. In other words, the second key guide 153 is inserted into the third recess 5131 of the second frame guide 513. The second frame guide 513 is provided with a protrusion 5133 that protrudes toward the second key guide 153, and the protrusion 5133 slides with the second key guide 153 when the key is released. In other words, the second frame guide 513 is a continuous sliding portion, and the second key guide 153 is an intermittent sliding portion.

Since the keyboard device 1 has the above-described configuration, the first guide 51 close to the top of the key 100 that is easily subjected to the force from the performer can obtain high mechanical strength, and the shift of the key 100 in the scale direction is conspicuous. The second guide 53 near the front end of the key 100, which is easy to obtain, can obtain high positional accuracy.

[Keyboard assembly operation]
FIG. 14 is a cross-sectional view for explaining the operation of the key and the guide in the keyboard assembly according to the embodiment of the present invention. FIG. 14A is a diagram when the key 100 is in the rest position (a state where the key is not depressed). FIG. 14B is a diagram when the key 100 is in the end position (a state where the key is pressed to the end). When the key 100 is pressed, the rod-like flexible member 185 is bent with the center of rotation. Then, the hammer support portion 120 pushes down the front end portion 210 of the hammer assembly 200, so that the hammer assembly 200 rotates about the rotation shaft 520. Thereby, the weight part 230 collides with the upper side stopper 430, and rotation of the hammer assembly 200 stops. That is, the key 100 reaches the end position. Further, when the sensor 300 is crushed by the front end portion 210, the sensor 300 outputs detection signals at a plurality of stages according to the crushed amount (key pressing amount).

On the other hand, when the key is released, the weight portion 230 moves downward, the hammer assembly 200 rotates, and the key 100 rotates upward. When the weight 230 comes into contact with the lower stopper 410, the hammer assembly 200 stops rotating and the key 100 returns to the rest position.

FIG. 15 is a cross-sectional view of the first guide when the key is pressed. When the key 100 is further pressed downward from the state of FIG. 14B, the lower end 102 of the key 100 comes into contact with the contact portion 652. When the key 100 contacts the contact portion 652, the downward movement of the key 100 is restricted. In this state, since the area where the key 100 and the contact portion 652 are in contact is smaller than the area where the key 100 and the support column 544 are in contact, the collision sound between the key 100 and the contact portion 652 can be reduced. it can. When the key 100 is further pressed downward from the state of FIG. 15, the key 100 moves downward while changing the shape of the contact portion 652, that is, while pressing the contact portion 652. Then, when it comes into contact with the buffer portion 650, the operation of the key 100 stops.

As described above, according to the keyboard device 1 according to the first embodiment, the sliding area can be reduced by providing the sliding member 600 between the key 100 and the frame 500. As a result, sliding between the key 100 and the frame 500 becomes smooth. With the configuration in which the first frame guide 511 is inserted inside the first key guide 151 and the second key guide 153 is sandwiched between the second frame guides 513, both high mechanical strength and high positional accuracy can be achieved. Since the sliding member 600 is softer than the key 100 or the frame 500, noise during sliding between the key 100 and the frame 500 can be reduced. Since the buffer member 650 is provided on the sliding member 600, it is possible to prevent the key 100 and the frame 500 from directly colliding when the key 100 is strongly pressed.

Second Embodiment
In the second embodiment, a keyboard device 1A including a first guide 51A having a configuration different from that of the first guide 51 in the first embodiment will be described.

FIG. 16 is a cross-sectional view of the first guide according to the embodiment of the present invention. The cross-sectional view of FIG. 16 corresponds to the cross-sectional view of FIG. As shown in FIG. 16, the sliding member 600A is attached to the key 100A. The sliding member 600A is disposed along the wall surface of the recess 150A provided in the key 100A. In other words, the sliding member 600A is disposed on the first key guide 151A. A pair of protrusions 620A provided on the sliding member 600A protrudes from the first key guide 151A toward the first frame guide 511A. The protrusion 620A sandwiches the first key guide 151A. The protrusion 620A slides with the first frame guide 511A. The buffer portion 650A provided in the sliding member 600A is disposed at the lower end 102A of the key 100A. Accordingly, when the key is depressed, the buffer portion 650A moves downward together with the key 100A, and the buffer portion 650A comes into contact with the support column 544A. Similar to the first embodiment, the buffer portion 650A may be provided with a contact portion that reduces the contact area with the support column 544A.

In other words, the first guide 51A has a first member connected to the key 100A, a sliding member 600A attached to the first member and having a protrusion 620A, and a key relative to the frame 500A. A second member that slides with the protrusion 620A when the 100A rotates is provided. In the above structure, the first member is the first key guide 151A, and the second member is the first frame guide 511A.

As described above, the sliding member 600A may be attached to the key 100A. Even in this case, the same effect as the first embodiment can be obtained.

<Third Embodiment>
In the third embodiment, a keyboard device 1B including a first guide 51B having a configuration different from that of the first guide 51 in the first embodiment will be described.

FIG. 17 is a cross-sectional view of the first guide according to the embodiment of the present invention. The cross-sectional view of FIG. 17 corresponds to the cross-sectional view of FIG. As shown in FIG. 17, the first key guide 151B protrudes downward from the lower end 102B of the key 100B. In the example of FIG. 17, the first key guide 151B is formed in a plate shape, but may have other protruding shapes. On the other hand, a recess 5119B is provided in the first frame guide 511B protruding upward from the support column 544B. The first key guide 151B is inserted into the recess 5119B. The sliding member 600B is disposed along the wall surface of the recess 5119B. In other words, the sliding member 600B is disposed on the first frame guide 511B. The pair of protrusions 620B provided on the sliding member 600B protrude from the opposing wall surface of the recess 5119B of the first frame guide 511B toward the first key guide 151B. That is, the first key guide 151B is sandwiched between the protrusions 620. The protrusion 620B slides with the first key guide 151B. The buffer portion 650B provided in the sliding member 600B is disposed on the upper end 512B of the first frame guide 511B, that is, on both sides of the recess 5119B. Similar to the first embodiment, a contact portion may be provided on the buffer portion 650B.

<Fourth embodiment>
In the fourth embodiment, a keyboard device 1C including a first guide 51C having a configuration different from that of the first guide 51B in the third embodiment will be described.

FIG. 18 is a cross-sectional view of the first guide in one embodiment of the present invention. The first guide 51C shown in FIG. 18 is similar to the first guide 51B shown in FIG. 17, but the first guide 51C has a sliding member 600C attached to the first key guide 151C. However, it is different from the first guide 51B. That is, the sliding member 600C is disposed on the outer surface of the first key guide 151C. The pair of protrusions 620C provided on the sliding member 600C protrude from the first key guide 151C toward the opposing wall surfaces of the recess 5119C of the first frame guide 511C. The protrusion 620C slides on the wall surface of the recess 5119C of the first frame guide 511C. The buffer portion 650C provided in the sliding member 600C is disposed at the lower end 102C of the key 100C and moves together with the key 100C. Similar to the first embodiment, a contact portion may be provided on the buffer portion 650C.

<Fifth Embodiment>
In the fifth embodiment, a keyboard device 1D including a first guide 51D having a configuration different from that of the first guide 51B in the third embodiment will be described.

FIG. 19 is a cross-sectional view of the first guide in one embodiment of the present invention. The first guide 51D shown in FIG. 19 is similar to the first guide 51B shown in FIG. 17, but the first guide 51D is provided with a recess 5119D on the upper surface of the column 544D. It differs from the first guide 51B in that a part of the inner wall is the first frame guide 511D. The first key guide 151D is inserted into the recess 5119D. The sliding member 600D is disposed along the wall surface of the recess 5119D. In other words, the sliding member 600D is disposed on the first frame guide 511D. The pair of protrusions 620D provided on the sliding member 600D protrude from the first frame guide 511D toward the first key guide 151D, and are arranged so as to sandwich the first key guide 151D. The protrusion 620D slides with the first key guide 151D. The buffer portion 650D provided in the sliding member 600D is disposed on both sides of the recess 5119D, that is, on the upper surface of the support column 544D. Similar to the first embodiment, the buffer portion 650D may be provided with a contact portion.

<Sixth Embodiment>
In the sixth embodiment, a keyboard device 1E including a first guide 51E having a configuration different from that of the first guide 51D in the fifth embodiment will be described.

FIG. 20 is a cross-sectional view of the first guide according to the embodiment of the present invention. The first guide 51E shown in FIG. 20 is similar to the first guide 51D shown in FIG. 19, but the first guide 51E has a sliding member 600E attached to the first key guide 151E. However, it is different from the first guide 51D. That is, the sliding member 600E is disposed on the first key guide 151E. The pair of protrusions 620E provided on the sliding member 600E protrudes from the first key guide 151E toward the first frame guide 511E. The protrusion 620E slides on the wall surface of the first frame guide 511E. The buffer 650E provided in the sliding member 600E is disposed at the lower end 102E of the key 100E and moves together with the key 100E. Similarly to the first embodiment, the buffer portion 650E may be provided with a contact portion.

<Seventh embodiment>
7th Embodiment demonstrates the keyboard apparatus 1F provided with the 1st guide 51F of the structure different from the 1st guide 51 in 1st Embodiment.

FIG. 21 is a cross-sectional view of the first guide in one embodiment of the present invention. In the first guide 51F shown in FIG. 21, a sliding member 800F is attached to the first frame guide 511F instead of the sliding member 600 of the first guide 51 shown in FIG. The sliding member 800F is provided with a pair of protrusions 820F. Each protrusion 820F protrudes from the first frame guide 511F toward the inner wall surface of the first key guide 151F. The protrusion 820F slides with the first key guide 151F.

FIG. 22 is a top view of the first guide according to the embodiment of the present invention. The top view shown in FIG. 22 is a top view seen from the direction F in FIG. A concave portion 5119F extending in the scale direction is provided on the upper surface of the first frame guide 511F, and a sliding member 800F is disposed inside the concave portion 5119F. Then, both ends of the sliding member 800F protrude in the scale direction from the recess 5119F, and this protruding portion constitutes a protrusion 820F. The sliding member 800F may be attached to the recess 5119F by a snap fit method, or may be bonded to the inside of the recess 5119F. It is preferable that a means for restricting the upward movement of the sliding member 800F is provided.

In the above embodiment, (1) the first guide 51, the second guide 53, and the third guide 55 do not line up on the same straight line when the key 100 is viewed in the scale direction, and (2 It is shown that the key fulcrum (rod-shaped flexible member 185), the first guide 51, and the second guide 53 do not line up on the same straight line when the key 100 is viewed in the scale direction. With the configurations (1) and (2), the movement of the key 100 can be restricted in the scale direction, the yawing direction, and the rolling direction. However, in order to obtain this effect, either one of the configurations (1) and (2) may be used. However, it is more effective to have both configurations (1) and (2).

In the embodiment described above, an electronic piano is shown as an example of a keyboard device to which the first guide 51 and the second guide 53 are applied. On the other hand, the first guide 51 and the second guide 53 of the above embodiment can also be applied to an acoustic piano (such as a grand piano or an upright piano). In this case, the sound generation mechanism corresponds to a hammer and a string. The turning mechanism of the above embodiment can also be applied to turning parts other than the piano.

It should be noted that the present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit of the present invention.

1: Keyboard device, 10: Keyboard assembly, 51: First guide, 53: Second guide, 55: Third guide, 70: Sound source device, 80: Speaker, 90: Housing, 100: Key, 100b : Black key, 100w: White key, 102: Lower end, 120: Hammer support part, 150: Recessed part, 151: First key guide, 153: Second key guide, 155: Side key guide, 180: Connection part, 181: Plate-shaped flexible member, 183: Key side support, 185: Bar-shaped flexible member, 200: Hammer assembly, 210: Front end, 220: Shaft support, 230: Weight, 300: Sensor, 410: Bottom Side stopper, 430: Upper stopper, 500: Frame, 511: First frame guide, 512B: Upper end, 513: Second frame , 515: side frame guide, 520: rotation axis, 521: tip frame guide, 540: first rib, 542: first wall, 544: support, 550: second rib, 551: third rib, 552 : Second wall portion, 554: third wall portion, 585: frame side support portion, 600, 800F: sliding member, 610: main body portion, 612: one side end, 620: protrusion, 630: first stopper, 640 : Second stopper, 642: Opening part, 644: Locking part, 650: Buffer part, 652: Contact part, 710: Signal conversion part, 730: Sound source part, 750: Output part, 820F: Protrusion, 5111: No. 1 concave portion, 5113: curved surface, 5115: second concave portion, 5117: protruding portion, 5119B: concave portion, 5131: third concave portion, 5133: protruding Part, 5135: reinforcing member, 5137: reinforcing member, NV: non appearance portion, PV: Appearance section

Claims

Frame,
A key that rotates relative to the frame about a key fulcrum;
A first member connected to the frame or the key; a sliding member attached to the first member and having at least one protrusion; and the protrusion when the key rotates relative to the frame; A first guide comprising a sliding second member;
A key guide connected to the key; a frame guide connected to the frame and sliding with the key guide; and a second guide provided below the first guide;
A third guide for restricting movement of the key in the scale direction behind the first and second guides;
With
The three positions of the key fulcrum, the first guide, and the second guide, or the three positions of the first, second, and third guides are identical when viewed from the direction in which the keys are adjacent. Keyboard device provided so as not to line up on the line.
The first member is connected to the frame;
The keyboard device according to claim 1, wherein the second member is connected to the key.
The keyboard device according to claim 2, wherein the first member protrudes upward with respect to the frame.
4. The keyboard device according to claim 3, wherein the protrusion is provided at an upper end of the sliding member.
The keyboard device according to claim 1, wherein the sliding member in a region where the protrusion is provided is movable in a first direction in which the protrusion protrudes.
The said sliding member has a 1st stopper which regulates the movement of the said sliding member to the said 2nd direction in the position different from the said protrusion in the 2nd direction where the said key extends. Keyboard equipment.
The keyboard device according to claim 6, wherein the sliding member has a second stopper for restricting movement of the sliding member in a third direction orthogonal to each of the first direction and the second direction.
2. The keyboard device according to claim 1, wherein the sliding member has a buffer portion that extends in a first direction in which the protrusion protrudes and relaxes a collision between the key and the frame when the key is pressed.
The keyboard device according to claim 8, wherein the sliding member is softer than the frame or the key.
2. The keyboard device according to claim 1, wherein the key guide is integral with the key, and the frame guide is integral with the frame.
The keyboard device according to claim 1, wherein the frame guide protrudes in a second direction in which the key extends with respect to the frame.
The first member is inserted inside the second member;
The keyboard apparatus according to claim 3, wherein the key guide is sandwiched between the frame guides.
The keyboard device according to any one of claims 1 to 12, wherein a pair of the protrusions are provided, and each protrusion protrudes in a direction opposite to each other in a direction in which the keys are adjacent to each other.
The first member is inserted inside the second member;
The keyboard device according to claim 13, wherein the pair of protrusions are configured to slide on opposing wall surfaces of the second member.
The second member is inserted inside the first member;
The keyboard apparatus according to claim 13, wherein the pair of protrusions are configured to slide with the second member interposed therebetween.
The three points of the key fulcrum, the first guide, and the second guide are provided so that they are not aligned on the same straight line when viewed from the direction in which the keys are adjacent to each other. 16. The keyboard device according to claim 1, wherein the two locations of the second and third guides are provided so as not to be aligned on the same straight line when viewed from the adjacent direction.