Keyboard device

Abstract

A keyboard device that can reduce the impact on the aesthetics of the musical instrument even if the keys are deformed from the designed shape due to manufacturing errors, characterized by having: a first key whose length is in a first direction; a mounting portion that is fixed relative to the frame; a first connecting portion that fixes the first key to the frame on the rotation fulcrum side of the first key; the first connecting portion is mounted to the mounting portion from a direction on a plane including the first direction and a second direction intersecting the rotation plane of the first key in a state where the first connecting portion is pressed and bent by the mounting portion, so as to determine the position of the front end of the first key in the second direction.

Description

Technical Field

[0001] One embodiment of the present invention relates to a keyboard device. In particular, one embodiment of the present invention relates to a keyboard device having a mechanism for correcting the position of a key in the scale direction at the key mounting portion. Background Art

[0002] A keyboard device includes a plurality of keys arranged and configured. The alignment accuracy of the plurality of keys has a great influence on the aesthetics of the musical instrument. Therefore, if the shape of the key is deformed due to manufacturing errors relative to the design, the aesthetics of the musical instrument will deteriorate. Accordingly, techniques for adjusting the position of the key in the case where the shape of the key has manufacturing errors have been developed (for example, Patent Documents 1 and 2).

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent No. 5206966

[0006] Patent Document 2: Japanese Patent No. 5489071 Summary of the Invention

[0007] Technical Problem to be Solved by the Invention

[0008] In the case of the keyboard device as shown in Patent Documents 1 and 2, it is necessary to adjust the position of the key for each keyboard device according to the manufacturing error of the key. Therefore, even in the case where the deviation of the manufacturing error of the key is small and all the keys are deformed in the same direction by the same amount (that is, the shape of the key is different from the design but is the same shape each time), it is necessary to perform the same adjustment for all keyboard devices each time.

[0009] One object of an embodiment of the present invention is to provide a keyboard device that can reduce the influence on the aesthetics of the musical instrument even if the key is deformed from the designed shape due to manufacturing errors.

[0010] Technical Solution for Solving the Technical Problem

[0011] A keyboard device according to an embodiment of the present invention includes: a first key having a length in a first direction; a mounting portion fixed to a frame; a first connecting portion that fixes the first key to the frame on the rotation fulcrum side of the first key; and the position of the front end of the first key in the second direction is determined by mounting the first key on the mounting portion from a direction on a plane including the first direction and a second direction intersecting the rotation plane of the first key in a state where the first connecting portion is bent by being pressed by the mounting portion.

[0012] It may also have a second key having a length in the first direction and arranged with the first key in the second direction. The first connecting portion connects the first key and the second key and fixes them to the frame. The first connecting portion is mounted on the mounting portion from the direction on the plane in a state where the first connecting portion is pressed and bent by the mounting portion, and the distance between the front end of the first key and the front end of the second key changes.

[0013] It may be that the first connecting portion includes a first key position correcting portion provided with respect to the first key.

[0014] The direction in which the first key position correcting portion is pressed by the mounting portion is different from the direction in which the front end of the first key moves by mounting the first connecting portion on the mounting portion.

[0015] It may have a second key having a length in the first direction and arranged with the first key in the second direction.

[0016] The first connecting portion further includes a second key position correcting portion provided with respect to the second key.

[0017] The direction in which the second key position correcting portion is pressed by the mounting portion is different from the direction in which the front end of the second key moves by mounting the first connecting portion on the mounting portion.

[0018] It may be that the rigidity of the mounting portion is higher than the rigidity of the connecting portion.

[0019] It may be that the mounting portion is integrally formed with the frame or integrally formed with other components provided between the frame and the first connecting portion, and the first connecting portion is mounted on the mounting portion in a state where bending stress is generated.

[0020] It may also have: a third key and a fourth key, which have a length in the first direction and are arranged in the second direction; a second connecting portion, which connects the third key and the fourth key on the rotation fulcrum side of the third key and the fourth key and fixes them to the frame; the first connecting portion is disposed above the second connecting portion, the mounting portion is provided on the upper part of the second connecting portion, and the first connecting portion is mounted on the mounting portion in a state where bending stress is generated.

[0021] It may be that the bending stress is generated by applying a force to the mounting portion by the first connecting portion in at least one of the first direction and the second direction.

[0022] It may be that the first connecting portion has a convex portion and the mounting portion has a concave portion, or the first connecting portion has a concave portion and the mounting portion has a convex portion, and the first connecting portion is mounted on the mounting portion by fitting the convex portion and the concave portion.

[0023] A keyboard device according to an embodiment of the present invention includes: a first key and a second key, which are arranged in a first direction and in a second direction intersecting the first direction; a mounting portion fixed to a frame and having a step in a third direction orthogonal to the first direction and the second direction; a first connecting portion that contacts the step in a direction on a plane including the first direction and the second direction and is mounted on the mounting portion, and connects and fixes the first key and the second key to the frame on a rotation fulcrum side of the first key and the second key; and the length directions of the first key and the second key are non-parallel in a state where the first connecting portion is removed from the mounting portion.

[0024] It may be that the first connecting portion includes a first key position correcting portion provided for the first key and a second key position correcting portion provided for the second key, and between a state where the first connecting portion is removed from the mounting portion and a state where the first connecting portion is mounted on the mounting portion, a direction in which a front end of the first key changes with respect to a front end of the second key is different from a direction in which the first key position correcting portion changes with respect to the second key position correcting portion.

[0025] It may be that the rigidity of the mounting portion is higher than the rigidity of the first connecting portion.

[0026] It may be that the mounting portion is integrally formed with the frame or integrally formed with another component provided between the frame and the first connecting portion.

[0027] In a state where the first connecting portion is removed from the mounting portion, a shape of the first connecting portion on the plane is different from a shape of the mounting portion on the plane.

[0028] It may be that there are further provided: a third key and a fourth key, which are arranged in the first direction and in the second direction; a second connecting portion that connects and fixes the third key and the fourth key to the frame on a rotation fulcrum side of the third key and the fourth key; the first connecting portion is disposed above the second connecting portion, the mounting portion is provided above the second connecting portion, and in a state where the first connecting portion is removed from the mounting portion, a shape of the first connecting portion on the plane is different from a shape of the mounting portion on the plane.

[0029] It may be that the first connecting portion has a convex portion and the mounting portion has a concave portion, or the first connecting portion has a concave portion and the mounting portion has a convex portion, and the first connecting portion is mounted on the mounting portion by fitting the convex portion and the concave portion in a manner of contacting in at least one of the first direction and the second direction.

[0030] Advantages of the Invention

[0031] According to the present invention, it is possible to provide a keyboard device that can reduce the impact on the aesthetics of the musical instrument even if the keys are deformed from the designed shape due to manufacturing errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a view showing the structure of a keyboard device in one embodiment of the present invention.

[0033] Figure 2 It is a block diagram showing the configuration of a sound source device in one embodiment of the present invention.

[0034] Figure 3 It is an explanatory view when observing the internal structure of the housing in one embodiment of the present invention from the side.

[0035] Figure 4 It is a view of a black key in one embodiment of the present invention when observed from below and a view of the mounting portion for mounting the black key when observed from above.

[0036] Figure 5 It is a view of a white key in one embodiment of the present invention when observed from below and a view of the mounting portion for mounting the black key when observed from above.

[0037] Figure 6 It is a view of a black key in a state of being removed from the mounting portion when observed from below in one embodiment of the present invention.

[0038] Figure 7 It is a view of a black key in a state of being mounted on the mounting portion when observed from below in one embodiment of the present invention.

[0039] Figure 8 It is a view of a black key in a state of being removed from the mounting portion when observed from below in one embodiment of the present invention.

[0040] Figure 9 It is a view of a white key in a state of being removed from the mounting portion when observed from below in one embodiment of the present invention.

[0041] Figure 10 It is a view of a black key in a state of being removed from the mounting portion when observed from below and a view of the mounting portion for mounting the black key when observed from above in one embodiment of the present invention.

[0042] Figure 11This is a view of the black key when observed from below in the state of being installed on the mounting part in an embodiment of the present invention.

[0043] Figure 12 This is a view of the white key when observed from below in the state of being removed from the mounting part in an embodiment of the present invention.

[0044] Figure 13 This is a view of the white key when observed from below in the state of being installed on the mounting part in an embodiment of the present invention.

[0045] Figure 14 This is a view of the black key when observed from below in the state of being removed from the mounting part in an embodiment of the present invention.

[0046] Figure 15 This is a view of the black key when observed from below in the state of being removed from the mounting part and a view of the mounting part for mounting the black key when observed from above in an embodiment of the present invention.

[0047] Figure 16 This is a view of the black key when observed from below in the state of being removed from the mounting part and a view of the mounting part for mounting the black key when observed from above in an embodiment of the present invention.

[0048] Figure 17 This is a view of the black key when observed from below in the state of being removed from the mounting part and a view of the mounting part for mounting the black key when observed from above in an embodiment of the present invention.

[0049] Figure 18 This is a view of the black key when observed from below in the state of being removed from the mounting part and a view of the mounting part for mounting the black key when observed from above in an embodiment of the present invention.

[0050] Figure 19 This is a view of the black key when observed from below in the state of being installed on the mounting part in an embodiment of the present invention.

[0051] Figure 20 This is a view of the black key when observed from below in the state of being removed from the mounting part and a view of the mounting part for mounting the black key when observed from above in an embodiment of the present invention.

[0052] Figure 21 This is a view of the black key when observed from below in the state of being removed from the mounting part and a view of the mounting part for mounting the black key when observed from above in an embodiment of the present invention.

[0053] Figure 22 This is a view of the white key and the mounting part for mounting the white key when observed from above in an embodiment of the present invention.

[0054] Figure 23 This is a view of the black key when observed from below in the state of being removed from the mounting part and a view of the mounting part for mounting the black key when observed from above in an embodiment of the present invention.

[0055] Figure 24 This is a diagram of the black key when viewed from below in a state where it is installed in the mounting portion in one embodiment of the present invention.

[0056] Figure 25 This is a diagram of the black key when viewed from below in a state where it is removed from the mounting portion and a diagram of the mounting portion for mounting the black key when viewed from above in one embodiment of the present invention. Detailed Embodiment

[0057] Hereinafter, a keyboard device according to one embodiment of the present invention will be described in detail with reference to the accompanying drawings. The following-described embodiments are examples of embodiments of the present invention, and the present invention should not be construed as being limited to these embodiments. In the accompanying drawings referred to in the present embodiment, the same reference numerals or similar reference numerals (reference numerals having only A, B, etc. appended after the numbers) are assigned to portions having the same part or the same function, and duplicate descriptions thereof may sometimes be omitted. There are cases where the dimensional ratios in the drawings (ratios between respective structures, ratios in the longitudinal, lateral, and height directions, etc.) are different from the actual ratios for ease of explanation, and cases where a part of the structure is omitted from the drawings. In the following description, the terms "upper", "above", "upper end", "lower", "below", "lower end" may sometimes be used based on the up-down directions in the respective drawings, but these up-down directions merely illustrate the relative directional relationships, and the up-down directions may also be reversed.

[0058] <First Embodiment>

[0059] [Structure of Keyboard Device]

[0060] Figure 1 This is a diagram showing the structure of the keyboard device in the first embodiment. The keyboard device 1 is an electronic keyboard instrument such as an electronic piano that produces sound according to the keys pressed by a user (performer). The keyboard device 1 may also be a keyboard-type controller that outputs control data (e.g., MIDI) for controlling an external sound source device according to the keys pressed. In this case, the keyboard device 1 may not have a sound source device.

[0061] The keyboard device 1 includes a keyboard assembly 10. The keyboard assembly 10 includes white keys 100w and black keys 100b. When it is not necessary to distinguish between the white keys 100w and the black keys 100b, they are simply referred to as keys 100. A plurality of white keys 100w and black keys 100b are arranged and configured. The number of keys 100 is N, which is 88 in this example. The direction in which these keys 100 are arranged is called the scale direction. In the following description, a structure having "w" appended after the reference numeral (number) means a structure corresponding to the white key. A structure having "b" appended after the reference numeral (number) means a structure corresponding to the black key.

[0062] A part of the keyboard assembly 10 is inside the housing 90. When the keyboard device 1 is viewed from above, the portion of the keyboard assembly 10 covered by the housing 90 is called the non-exterior portion NV, and the portion exposed from the housing 90 and visible to the user is called the exterior portion PV. That is, the exterior portion PV is a part of the keys 100 and represents the area that can be played and operated by the user. Hereinafter, the portion of the keys 100 exposed through the exterior portion PV may sometimes be called the key body portion.

[0063] Inside the housing 90, a sound source device 70 and a speaker 80 are arranged. The sound source device 70 generates a sound waveform signal in response to the depression of the keys 100. The speaker 80 outputs the sound waveform signal generated in the sound source device 70 to the external space. The keyboard device 1 may also include a slider for controlling the volume, a switch for switching the timbre, a display for displaying various information, and the like.

[0064] In the description in this specification, directions such as up, down, left, right, near the front, and inside represent the directions when the keyboard device 1 is viewed from the player during performance. For example, it can be stated that the non-exterior portion NV is located on the inner side relative to the exterior portion PV. There are also cases where directions are expressed based on the keys 100, such as the front end side of the key (the front side of the key) and the rear end side of the key (the rear side of the key). In this case, the front end side of the key represents the near front side when viewed from the player with respect to the key 100. The rear end side of the key represents the inner side when viewed from the player with respect to the key 100. According to this definition, it can be stated that the portion of the black key 100b that protrudes upward from the front end to the rear end of the key body portion of the black key 100b is higher than the white key 100w.

[0065] Figure 2 It is a block diagram showing the configuration of the sound source device in the first embodiment. The sound source device 70 includes a signal conversion unit 710, a sound source unit 730, and an output unit 750. Sensors 300 are provided corresponding to the respective keys 100, detect key operations, and output signals corresponding to the detected content. In this example, the sensors 300 output signals according to the amount of key depression in three levels. The key depression speed can be detected based on the interval of these signals.

[0066] The signal conversion unit 710 acquires the output signals of the sensors 300 (sensors 300-1, 300-2, …, 300-88 corresponding to 88 keys 100), generates operation signals corresponding to the operation states of the respective keys 100, and outputs them. In this example, the operation signals are signals in MIDI format. According to the key operation, the signal conversion unit 710 outputs Note On. At this time, the key number indicating that any one of the 88 keys 100 has been operated and the strength corresponding to the key pressing speed are output in a manner corresponding to Note On. On the other hand, according to the key release operation, the signal conversion unit 710 outputs the key number and Note Off in a corresponding manner. It is also possible to input signals corresponding to other operations such as the pedal to the signal conversion unit 710 and reflect them in the operation signals.

[0067] 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.

[0068] [Structure of the keyboard assembly]

[0069] Figure 3 This is an explanatory diagram when the structure inside the housing in the first embodiment is viewed from the side. As Figure 3 shown, the keyboard assembly 10 and the speaker 80 are arranged inside the housing 90. The speaker 80 is arranged on the inner side of the keyboard assembly 10. The speaker 80 is arranged so as to output the sound corresponding to the key operation upward and downward of the housing 90. The sound output downward advances outward from the lower surface side of the housing 90. On the other hand, the sound output upward passes through the internal space of the keyboard assembly 10 from inside the housing 90, and advances outward from the gap between adjacent keys 100 or the gap between the key 100 and the housing 90 in the appearance part PV.

[0070] Regarding the structure of the keyboard assembly 10, use Figure 3This will be described below. In addition to the above-described keys 100 and sensors 300, the keyboard assembly 10 also includes a hammer assembly 200, a frame 500, a connecting portion 800, and a mounting portion 900. The keyboard assembly 10 is a resin structure in which most of the structures are manufactured by injection molding or the like. The frame 500 is fixed to the housing 90. The mounting portion 900 is fixed to the frame 500. The connecting portion 800 is mounted on the mounting portion 900 and connects the key 100 to the frame 500 in a rotatable manner. The detailed structures of the connecting portion 800 and the mounting portion 900 will be described later. The key 100 includes a key body portion 110 and a key support portion 120. The key body portion 110 is connected to the connecting portion 800 via the key support portion 120. The key support portion 120 is a plate-like member. A part of the key support portion 120 is relatively thin in the plate thickness direction and has flexibility. By the key support portion 120 bending using this flexibility, the key 100 rotates relative to the frame 500.

[0071] The white key 100w includes a front key guide 150w. The front key guide 150w is in contact with the front frame guide 510 of the frame 500 in a slidable manner in a state of covering the front frame guide 510 of the frame 500. The front key guide 150w is in contact with the front frame guide 510 on both sides in the scale direction of its upper and lower portions. On the other hand, a component equivalent to the front key guide 150w is not provided on the black key 100b.

[0072] The hammer assembly 200 is mounted on the frame 500 in a rotatable manner. The front end portion 210 of the hammer assembly 200 is in contact with the hammer support portion 130 of the key 100 in a slidable manner in the internal space of the hammer support portion 130 of the key 100 in a substantially front-rear direction. This sliding portion, that is, the portion where the front end portion 210 and the hammer support portion 130 are in contact, is located below the key 100 in the appearance portion PV (in front of the rear end of the key body portion 110).

[0073] The hammer assembly 200 includes a metal weight portion 230 inside the rotation axis of the hammer assembly 200. 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 upward. If the key is pressed, the weight portion 230 moves upward and collides with the upper stopper 430. Through this weight portion 230, the hammer assembly 200 applies a load relative to the key press. The lower stopper 410 and the upper stopper 430 are formed of a buffer material or the like (non-woven fabric, elastomer, etc.).

[0074] Below the key body portion 110, a sensor 300 is mounted on the frame 500. If the sensor 300 is flattened on the lower surface side of the key body portion 110 due to key pressing, the sensor 300 outputs a detection signal. As described above, the sensor 300 is provided corresponding to each key 100.

[0075] [Structure of Key 100 and Mounting Portion 900]

[0076] Use Figure 4 and Figure 5 to illustrate the basic structures of key 100, connecting portion 800, and mounting portion 900. A preferred embodiment of the present invention will be described hereinafter. That is, in the examples of Figure 6 and Figure 4 and Figure 5 the structures related to the present invention are not reflected. Key 100, connecting portion 800, and mounting portion 900 are all made of resin.

[0077] Figure 4 FIG. is a view of black key 100b in a preferred embodiment of the present invention as viewed from below and a view of mounting portion 900b for mounting the black key as viewed from above. Figure 4 FIG. shows a state where black key 100b is removed from mounting portion 900b. Black key 100b has a length in direction D1 and is arranged in direction D2. It should be noted that direction D2 can be said to be a direction intersecting the rotation plane of black key 100b. Black key 100b has key main body portion 110b and key support portion 120b. Black key 100b is connected to connecting portion 800b. Specifically, key main body portion 110b is connected to connecting portion 800b via key support portion 120b. Key main body portion 110b, key support portion 120b, and connecting portion 800b are integrally formed. Key main body portion 110b extends in direction D1 and includes the main part of black key 100b visible to the player. A gap portion 121b is provided inside key support portion 120b. In other words, key support portion 120b connects key main body portion 110b and connecting portion 800b at multiple locations in direction D2. In the example of Figure 4 key support portion 120b is connected to connecting portion 800b on the outside of key main body portion 110b in direction D2.

[0078] Key main body portion 110b, key support portion 120b, and connecting portion 800b may not be integrally formed. For example, key support portion 120b and connecting portion 800b may be separately formed and connected by a connecting member or the like. Key main body portion 110b, key support portion 120b, and connecting portion 800b may not be made of resin. For example, at least a part of them may be made of wood, metal, or ceramic.

[0079] A plurality of black keys 100b are connected to connecting portion 800b. In the example of Figure 4In the example, the five black keys 100b (100b-1 to 100b-5) in one octave are connected to the connecting portion 800. That is, the connecting portion 800b connects the plurality of black keys 100b and fixes them to the frame 500. A concave portion 810b is provided on the lower surface of the connecting portion 800b. That is, the connecting portion 800b has a step in the D3 direction orthogonal to the D1 direction and the D2 direction. The concave portion 810b extends in the D2 direction.

[0080] The mounting portion 900b is fixed relative to the frame 500. A convex portion 910b is provided on the upper surface of the mounting portion 900b. That is, the mounting portion 900b has a step in the D3 direction. The convex portion 910b extends in the D2 direction.

[0081] The mounting portion 900b may be a part of the frame 500 or other components mounted on the frame 500. The mounting portion 900b may be integrally formed with the frame 500 or integrally formed with other components (for example, the connecting portion 800w of the white key 100w described later) provided between the frame 500 and the connecting portion 800b. Although details will be described later, the mounting portion 900b may also be provided on the upper surface side of the connecting portion 800w of the white key 100w mounted on the rail provided on the frame 500.

[0082] By fitting the concave portion 810b of the connecting portion 800b and the convex portion 910b of the mounting portion 900b in a face-to-face state, the connecting portion 800b is mounted to the mounting portion 900b. In other words, the connecting portion 800b is mounted to the mounting portion 900b by the step in the D3 direction of the connecting portion 800b contacting the step in the D3 direction of the mounting portion 900b from the direction on the plane including the D1 direction and the D2 direction. The mounting portion 900b is fixed relative to the frame 500 and faces upward. Therefore, the connecting portion 800b is mounted to the mounting portion 900b from above the mounting portion 900b. The connecting portion 800b fixes the black key 100b to the frame 500 on the rotation fulcrum side of the black key 100b.

[0083] Figure 5 It is a view of the white key 100w in one embodiment of the present invention as viewed from below and a view of the mounting portion 900w for mounting the white key as viewed from above. Figure 5It shows the state where the white key 100w is removed from the mounting part 900w. The structure of the white key 100w is similar to that of the black key 100b, but is different from the black key 100b in the following points. A convex part 820w is provided on the upper part of the connecting part 800w of the white key 100w. The shape of the key body part 110w of the white key 100w is different from that of the key body part 110b of the black key 100b. Only the four odd-numbered white keys 100w (100w-1, 100w-3, 100w-5, 100w-7) among the seven white keys 100w in one octave are connected to the connecting part 800w. Regarding other points than the above, the white key 100w has the same structure as the black key 100b.

[0084] Although detailed description is omitted, the three even-numbered white keys 100w (100w-2, 100w-4, 100w-6) among the seven white keys 100w in one octave are Figure 5 prepared independently of the white key 100w shown, and are fitted into the concave part 810w or the convex part 820w of the connecting part 800w of the white key 100w shown in Figure 5 the figure.

[0085] In Figure 4 the figure, the structure of the black key 100b mounted on the mounting part 900b is illustrated, but it is not limited to the structure. For example, it may be that the concave part 810b of the connecting part 800b of the black key 100b shown in Figure 4 is fitted from above the convex part 820w of the connecting part 800w of the white key 100w shown in Figure 5 the figure, so that the black key 100b is mounted above the white key 100w. In this case, the connecting part 800w including the convex part 820w of the white key 100w functions as the mounting part 900b.

[0086] Figure 6 It is a figure of the black key in the state of being removed from the mounting part as observed from below in one embodiment of the present invention. In Figure 6 the figure, a partial enlarged view of the connecting part 800b is shown. As Figure 6 shown, at the end in the D2 direction, the concave part 810b of the connecting part 800b is divided into a first fitting area 811b, a second fitting area 813b, a first concave area 815b, and a second concave area 817b.

[0087] The first fitting region 811b and the second fitting region 813b are disposed at different positions in the D1 direction. Specifically, in the D1 direction, the position of the center line (center line 814b) of the second fitting region 813b is closer to the key body portion 110b (on the opposite side of the D1 direction) than the position of the center line (center line 812b) of the first fitting region 811b. In other words, the distance in the D1 direction between the side wall on the lower side (opposite side of the D1 direction) of the first fitting region 811b and the side wall on the upper side (D1 direction side) of the second fitting region 813b is smaller than the width of the convex portion 910b in the D1 direction. The concave portions 810b of both the first fitting region 811b and the second fitting region 813b are fitted to the convex portion 910b of the mounting portion 900b (refer to Figure 4 ).

[0088] The first concave region 815b and the second concave region 817b are provided between the first fitting region 811b and the second fitting region 813b. The concave portions 810b of the first concave region 815b and the second concave region 817b have a shape that is recessed in opposite directions when viewed from above. The width W2 in the D1 direction of the concave portion 810b in the first concave region 815b and the second concave region 817b is larger than both the width W1 in the D1 direction of the concave portion 810b in the first fitting region 811b and the width W3 in the D1 direction of the concave portion 810b in the second fitting region 813b. The length L2 in the D2 direction of the concave portion 810b in the first concave region 815b and the second concave region 817b is larger than the length L1 in the D2 direction of the gap portion 121b-1 provided inside the key support portion 120b-1.

[0089] As Figure 6 shown, in a state where the connecting portion 800b is detached from the mounting portion 900b, the key body portion 110b-1 is skewed (tilted) so as to approach the key body portion 110b-2. Similarly, the key body portion 110b-5 is skewed (tilted) so as to approach the key body portion 110b-4. The distance in the D2 direction between the front end of the key body portion 110b-1 and the front end of the key body portion 110b-2 is h1. The distance in the D2 direction between the front end of the key body portion 110b-4 and the front end of the key body portion 110b-5 is h2. On the other hand, the key body portions 110b-2 to 110b-4 are substantially parallel to each other. As described above, even if the key body portions 110b-1 to 110b-5 are designed to be parallel as Figure 4 shown, sometimes due to manufacturing problems of the resin, they may be skewed (tilted) as Figure 6 shown. Such skewing occurs with high reproducibility. Therefore, if the keys have the same shape, there is a tendency to generate the same skewing.

[0090] Figure 7This is a diagram of the black key when viewed from below in a state where it is installed in the installation part in one embodiment of the present invention. For ease of explanation, the installation part 900b is omitted in Figure 7 In Figure 7 , the convex part 910b in the installation part 900b where the connection part 800b is installed is indicated by a dotted line. In the present embodiment, the rigidity of the installation part 900b in the D1 direction is sufficiently higher than the rigidity of the connection part 800b. Therefore, when the connection part 800b is installed in the installation part 900b, the installation part 900b does not deform while the connection part 800b deforms. As a result, Figure 7 As shown, in the first concave region 815b and the second concave region 817b, the connection part 800b bends in the D1 direction, and the position of the second fitting region 813b moves in the D1 direction. By making the position of the center of the second fitting region 813b in the D1 direction coincide with the position of the center of the first fitting region 811b, the connection part 800b is fitted into the installation part 900b.

[0091] By bending the connection part 800b in such a way that the second fitting region 813b moves in the D1 direction, the key main body part 110b moves in the D2 direction. Due to the movement of the key main body part 110b in the D2 direction, the distance in the D2 direction between the front ends of the key main body part 110b-1 and the key main body part 110b-2 changes from h1 to h3. As a result, the key main body part 110b-1 and the key main body part 110b-2 become substantially parallel. Similarly, the distance in the D2 direction between the front ends of the key main body part 110b-4 and the key main body part 110b-5 changes from h2 to h4. As a result, the key main body part 110b-4 and the key main body part 110b-5 become substantially parallel. It should be noted that in the connection part 800b in the region corresponding to the black keys 100b-2 to 100b-4, the linear first fitting region 811b is continuous. Therefore, the positions of the front ends of the key main body parts 110b-2 to 110b-4 do not change before and after installing the connection part 800b in the installation part 900b.

[0092] If the state of Figure 7 is described in another way, the connection part 800b is installed in the installation part 900b in a state where the connection part 800b is pressed by the installation part 900b in a direction on a plane including the D1 direction and the D2 direction. The connection part 800b bends by being pressed by the installation part 900b. As a result, the front end position of the black key 100b in the D2 direction is determined. In the present embodiment, by pressing the connection part 800b by the installation part 900b as described above, the skew of the black key 100b is corrected. As a result, the distance between the front end of the black key 100b (100b-1) with skew and the front end of another adjacent black key 100b (100b-2) changes. In Figure 7In the state of Figure 7 As shown, this bending stress is generated by the connecting portion 800b receiving a force in the D1 direction from the mounting portion 900b.

[0093] As described above, by providing the first fitting region 811b and the second fitting region 813b, the position of the black key 100b is corrected when the connecting portion 800b is mounted on the mounting portion 900b. Therefore, the first fitting region 811b and the second fitting region 813b are sometimes referred to as the "position correction portion". The direction in which this position correction portion is pressed by the mounting portion 900b is the D1 direction. On the other hand, the direction in which the front end of the black key 100b moves when the connecting portion 800b is mounted on the mounting portion 900b is the D2 direction. That is to say, the direction in which the above-mentioned position correction portion is pressed by the mounting portion 900b is different from the direction in which the front end of the black key 100b moves. The position correction portion is provided corresponding to the key that generates skew. That is to say, the position correction portion can be Figure 6 As shown, there can be multiple or one.

[0094] If the above structure is described in another way, the distance between the front ends of the black keys 100b-1 and 100b-2 in the state where the connecting portion 800b is removed from the mounting portion 900b ( Figure 6 the state shown) is different from the distance between the front ends of the black keys 100b-1 and 100b-2 in the state where the connecting portion 800b is mounted on the mounting portion 900b ( Figure 7 the state shown). If described further in another way, then Figure 6 the shape of the connecting portion 800b in plan view in the state shown is different from Figure 7 the shape of the connecting portion 800b in plan view in the state shown.

[0095] By providing the first concave region 815b and the second concave region 817b in the concave portion 810b, it is possible to avoid interference between the inner wall of the concave portion 810b and the convex portion 910b when the connecting portion 800b bends in these regions. Moreover, by providing the first concave region 815b and the second concave region 817b, the connecting portion 800b becomes easier to bend in these regions. Therefore, the correction of the position of the key main body portion 110b in the D2 direction becomes easier, and the workability when mounting the connecting portion 800b on the mounting portion 900b is also improved.

[0096] In the present embodiment, a structure is illustrated in which the rigidity of the mounting portion 900b in the D1 direction is higher than the rigidity of the connecting portion 800b, but the structure is not limited thereto. The rigidity of the mounting portion 900b may be the same as the rigidity of the connecting portion 800b, or may be lower than the rigidity of the connecting portion 800b. However, the mounting portion 900b has a rigidity such that the shape of the connecting portion 800b changes when the connecting portion 800b is mounted on the mounting portion 900b.

[0097] As described above, according to the keyboard device according to the present embodiment, even if the key is deformed from the designed shape due to manufacturing errors, by providing the position correction portion in consideration of the tendency of the deformation, just by mounting the key on the frame, the position of the key front end portion in the scale direction can be corrected to the correct position. As a result, it is possible to maintain the beauty of the musical instrument without the need for adjustment or the like after mounting the key on the frame. Further, since the connecting portion 800b is mounted on the mounting portion 900b in a state where bending stress is generated, there is no gap or the like between the connecting portion 800b and the mounting portion 900b, and it is mounted in a stable state. In the present embodiment, in the case where components other than the connecting portion 800b (the key main body portion 110b and the key support portion 120b) are deformed from the designed shape due to manufacturing errors, for example, in the case where the extending direction of the key main body portion 110b from the key support portion 120b is deformed from the designed shape, it is possible to correct the deviation of the position of the key front end portion in the scale direction from the normal position caused by the change.

[0098] <Second Embodiment>

[0099] Figure 8 This is a view of the black key in a state of being removed from the mounting portion as viewed from below in one embodiment of the present invention. In the connecting portion 800bA of the second embodiment, the shape of the concave portion 810bA in plan view is different from the shape of the concave portion 810b of the first embodiment. In the following description, the same features as those of the Figure 6 connecting portion 800b will be omitted, and mainly the points different from the concave portion 810b will be described.

[0100] As Figure 8As shown, the key body parts 110bA (110bA-1 to 110bA-5) of the black keys 100bA (100bA-1 to 100bA-5) are all non-parallel. The key body part 110bA-2 inclines in the R1 direction with respect to the key body part 110bA-3. The key body part 110bA-1 inclines significantly more in the R1 direction than the key body part 110bA-2 with respect to the key body part 110bA-3. The key body part 110bA-4 inclines in the R2 direction with respect to the key body part 110bA-3. The key body part 110bA-5 inclines significantly more in the R2 direction than the key body part 110bA-4 with respect to the key body part 110bA-3. The concave part 810bA provided in the connecting part 800bA bends in the D1 direction from the first end 801bA to the second end 802bA of the connecting part 800bA in the D2 direction.

[0101] If Figure 8 the connecting part 800bA shown is attached to Figure 4 the mounting part 900b (referred to as the mounting part 900bA in this embodiment) shown, the connecting parts 800bA provided at positions corresponding to the black keys 100bA-1, 100bA-2, 100bA-4, and 100bA-5 are pressed in the D1 direction by the mounting part 900bA. Therefore, the above-mentioned black keys 100bA move in the D2 direction or the opposite direction of the D2 direction as shown by the arrows in the figure respectively. As a result, Figure 8 the skew of the black keys 100bA shown is corrected, and the key body parts 110bA-1 to 110bA-5 become substantially parallel.

[0102] The shape of the concave part 810bA can be appropriately corrected according to the skew mode of each black key 100bA. For example, if the key body parts 110bA-2 to 110bA-4 are substantially parallel, the concave part 810bA in the region corresponding to these keys may also be substantially linear in the D2 direction in a top view.

[0103] As described above, according to the keyboard device according to this embodiment, the same effects as those of the first embodiment can be obtained.

[0104] <Third Embodiment>

[0105] Figure 9 It is a view of a white key in a state of being removed from the mounting part as observed from below in one embodiment of the present invention. As Figure 9As shown, the key main body parts 110wB of the white keys 100wB (100wB-1, 100wB-3, 100wB-5, 100wB-7) are all non-parallel. The key main body part 110wB-1 is inclined in the R1 direction with respect to the key main body part 110wB-3. The key main body part 110wB-5 is inclined in the R2 direction with respect to the key main body part 110wB-3. The key main body part 110wB-7 is inclined much more in the R2 direction than the key main body part 110wB-5 with respect to the key main body part 110wB-3. The concave part 810wB and the convex part 820wB provided in the connecting part 800wB are bent in the D1 direction from the first end 801wB to the second end 802wB of the connecting part 800wB in the D2 direction in a top view.

[0106] If Figure 9 the connecting part 800wB shown is attached to Figure 5 the mounting part 900w (referred to as the mounting part 900wB in this embodiment), the connecting parts 800wB provided at the positions corresponding to the white keys 100wB-1, 100wB-5, and 100wB-7 are pressed by the mounting part 900wB in the D1 direction. Therefore, the above-mentioned white keys 100wB move in the D2 direction or the opposite direction of the D2 direction as shown by the arrows in the figure respectively. As a result, Figure 9 the skew of the white keys 100wB shown is corrected, and the key main body parts 110wB-1, 110wB-3, 110wB-5, and 110wB-7 become substantially parallel.

[0107] Since the convex part 820wB has the same shape as the concave part 810wB in a top view, by attaching the connecting part 800wB to the mounting part 900wB, the convex part 820wB also becomes linear together with the concave part 810wB. For the convex part 820wB that has become linear in this way by attaching the connecting part 800wB to the mounting part 900wB, it is possible to attach Figure 8 the connecting part 800bA of the black key 100bA shown. In this case, the convex part 820wB functions as a substitute for the mounting part 900bA. If the above structure is described in another way, the connecting part 800bA is arranged above the connecting part 800wB, the convex part 820wB that functions as a substitute for the mounting part 900bA is provided at the upper part of the connecting part 800wB, and the connecting part 800bA is attached to the convex part 820wB in a state where bending stress is generated. In the state where the connecting part 800bA is detached from the convex part 820wB, the shape of the connecting part 800bA (bent shape) on the plane including the D1 direction and the D2 direction is different from the shape of the convex part 820wB (linear shape) on this plane.

[0108] As described above, according to the keyboard device involved in this embodiment, the same effect as that of the first embodiment can be obtained with respect to the white keys. In the case of white keys, sometimes a guide is provided at the front end of the key, but even in such a case, the direction of the key can be properly corrected on the side of the rotation center of the key, so that the friction force when the guide and the front end of the key slide can be reduced. As a result, smooth movement of the key can be achieved.

[0109] <Fourth embodiment>

[0110] Figure 10 The diagram is a diagram showing a black key in a state of being removed from a mounting portion as viewed from below and a diagram showing a mounting portion to which the black key is mounted as viewed from above in one embodiment of the present invention. Figure 11 FIG. 1 is a diagram showing a black key installed in a mounting portion as viewed from below in one embodiment of the present invention. Figure 11 The mounting portion 900bC is omitted. Figure 10 and Figure 11 The connecting portion 800bC and the mounting portion 900bC shown are Figure 8 The connection portion 800bA and Figure 4 In the following description, description of the same features as the connecting portion 800bA and the mounting portion 900bA will be omitted, and the differences therefrom will be mainly described.

[0111] like Figure 10 As shown, the shape of the concave portion 810bC of the connecting portion 800bC in plan view is linear. On the other hand, the shape of the convex portion 910bC of the mounting portion 900bC in plan view is curved in the D1 direction from the first end 901bC to the second end 902bC of the mounting portion 900bC in the D2 direction.

[0112] like Figure 11 As shown in FIG. 1 , if the connecting portion 800bC is mounted on the mounting portion 900bC, the connecting portions 800bC provided at positions corresponding to the black keys 100bC-1, 100bC-2, 100bC-4, and 100bC-5 are pressed in the direction D1 by the mounting portion 900bC, so that the black keys 100bC are respectively as shown in FIG. Figure 11 As shown by the arrow in FIG. 1 , the moving direction is in the direction D2 or in the opposite direction of the moving direction D2. As a result, Figure 11 The distortion of the black key 100bC shown is corrected, and the key body portions 110bC-1 to 110bC-5 are substantially parallel.

[0113] As described above, according to the keyboard device according to this embodiment, the same effects as those of the above-mentioned embodiment can be obtained.

[0114] <Fifth embodiment>

[0115] Figure 12 This is a view of a white key removed from the mounting portion as viewed from below in one embodiment of the present invention. Figure 13 This is a view of a white key mounted on the mounting portion as viewed from below in one embodiment of the present invention. For ease of explanation, in Figure 12 and Figure 13 the mounting portion 900bD is omitted.

[0116] As Figure 12 shown, the concave portion 810wD provided in the connecting portion 800wD is the same as the Figure 9 concave portion 810wB shown. When viewed from above, it bends from the first end 801wD to the second end 802wD of the connecting portion 800wD in the D2 direction in the D1 direction. On the other hand, the convex portion 820wD provided in the connecting portion 800wD is different from the concave portion 810wD and is linear when viewed from above.

[0117] As Figure 13 shown, if the connecting portion 800wD is mounted on the Figure 5 mounting portion 900w (referred to as the mounting portion 900wD in this embodiment) shown, the connecting portion 800wD provided at the positions corresponding to the white keys 100wD-1, 100wD-5, and 100wD-7 is pressed by the mounting portion 900wD in the D1 direction. As a result, the concave portion 810wD that was originally curved ( Figure 12 ) changes to a linear shape ( Figure 13 ), and the convex portion 820wD that was originally linear ( Figure 12 ) changes to a curved shape ( Figure 13 ). Also, the above white keys 100wD move in the D2 direction or the opposite direction of the D2 direction as shown by the arrows in the figure. As a result, Figure 12 the skew of the white key 100wB shown is corrected, and as Figure 13 shown, the key body portions 110wD-1, 110wD-3, 110wD-5, and 110wD-7 become substantially parallel.

[0118] As described above, according to the keyboard device according to this embodiment, the same effects as those of the above embodiment can be obtained.

[0119] <Sixth Embodiment>

[0120] Figure 14 This is a view of a black key removed from the mounting portion as viewed from below in one embodiment of the present invention. Figure 14 The connecting portion 800bE shown is similar to the Figure 8 connecting portion 800bA shown. In the following description, for Figure 8The description of the same features of the connecting portion 800bA is omitted, and mainly the points different from the connecting portion 800bA will be described.

[0121] As Figure 14 shown, in the concave portion 810bE provided in the connecting portion 800bE, a first protruding portion 830bE and a second protruding portion 840bE that protrude from the side wall of the concave portion 810bE toward the inside in the D1 direction or the opposite direction of the D1 direction are provided in a plan view. The first protruding portion 830bE and the second protruding portion 840bE are provided at facing positions, that is, at the same positions in the D2 direction. The first protruding portion 830bE and the second protruding portion 840bE are provided between adjacent black keys 100bE. Specifically, the first protruding portion 830bE and the second protruding portion 840bE are provided between adjacent key support portions 120bE. The front ends of the first protruding portion 830bE and the second protruding portion 840bE exist at positions along Figure 8 the shape (curved shape) of the concave portion 810bA shown in a plan view. Therefore, if the connecting portion 800bE is mounted on the Figure 4 mounting portion 900b (referred to as the mounting portion 900bE in the present embodiment) shown, the connecting portion 800bE undergoes the same change as the Figure 8 connecting portion 800bA shown.

[0122] The orientation of the black key 100bE-1 is controlled by the first protruding portion 830bE (830bE-1, 830bE-2) and the second protruding portion 840E (840bE-1, 840bE-2) that are adjacent to each other with the black key 100bE-1 interposed therebetween in the D2 direction. That is, the orientation of the black key 100bE can be corrected by the protruding amounts of the first protruding portion 830bE and the second protruding portion 840bE that are adjacent to each other with the black key 100bE interposed therebetween.

[0123] The first protruding portion 830bE and the second protruding portion 840bE do not necessarily need to exist in pairs, and in the case where one protruding portion is sufficiently long, the other protruding portion may not exist. The first protruding portion 830bE and the second protruding portion 840bE may not be provided at facing positions. That is, the first protruding portion 830bE and the second protruding portion 840bE may be provided at different positions in the D2 direction.

[0124] As described above, according to the keyboard device according to the present embodiment, the same effects as those of the above-described embodiment can be obtained.

[0125] <Seventh Embodiment>

[0126] Figure 15 is a view of a black key in a state of being removed from a mounting portion as viewed from below and a view of the mounting portion on which the black key is mounted as viewed from above in one embodiment of the present invention.Figure 15 The connecting portion 800bF shown and Figure 14 the connecting portion 800bE shown are similar. In the following description, the features that are the same as those of Figure 14 the connecting portion 800bE will be omitted, and mainly the points different from the connecting portion 800bE will be described.

[0127] As Figure 15 shown, a concave portion 810bF is provided in the connecting portion 800bF in such a way that the remaining fitting portion 850bF is left. In other words, if the concave portion 810bF around the fitting portion 850bF is taken as a reference, the fitting portion 850bF is a convex portion. A concave portion 920bF for fitting the fitting portion 850bF is provided in the mounting portion 900bF. The concave portion 920bF is linear. The fitting portion 850bF has a column portion 851bF, a first protruding portion 853bF, and a second protruding portion 855bF. The first protruding portion 853bF and the second protruding portion 855bF protrude from the column portion 851bF in opposite directions at the same position in the D2 direction. The first protruding portion 853bF and the second protruding portion 855bF are provided between the respective black keys 100bF. Specifically, the first protruding portion 853bF and the second protruding portion 855bF are provided between adjacent key support portions 120bF. The front ends of the first protruding portion 853bF and the second protruding portion 855bF are located at positions along Figure 8 the shape (curved shape) of the concave portion 810bA shown in a top view. Therefore, if the connecting portion 800bF is mounted on the mounting portion 900bF, the connecting portion 800bF undergoes the same changes as Figure 8 the connecting portion 800bA shown and Figure 14 the connecting portion 800bE shown.

[0128] Similar to Figure 14 the first protruding portion 830bE and the second protruding portion 840bE shown, the first protruding portion 853bF and the second protruding portion 855bF that are adjacent to each other with the black key 100bF-1 sandwiched therebetween in the D2 direction control the orientation of the black key 100bF-1. That is, the orientation of the black key 100bF can be corrected by the protruding amounts of the first protruding portion 853bF and the second protruding portion 855bF that are adjacent to each other with the black key 100bF sandwiched therebetween.

[0129] It is not necessarily required to provide both the first protrusion 853bF and the second protrusion 855bF. For example, when the sum of the width of the column portion 851bF in the D1 direction and the length of the first protrusion 853bF reaches the width of the recess 920bF in the D1 direction, the second protrusion 855bF may not be provided. Additionally, it may be that the recess 810bF is not provided, and the fitting portion 850bF protrudes downward from the lower surface of the connecting portion 800bF. The first protrusion 853bF and the second protrusion 855bF may also protrude from the column portion 851bF at different positions in the D2 direction.

[0130] As described above, according to the keyboard device according to the present embodiment, the same effects as those of the above-described embodiment can be obtained.

[0131] <Eighth Embodiment>

[0132] Figure 16 It is a diagram of a black key in a state of being removed from the mounting portion as viewed from below and a diagram of the mounting portion for mounting the black key as viewed from above in one embodiment of the present invention. Figure 16 The connecting portion 800bG shown is similar to Figure 15 the connecting portion 800bF shown. In the following description, the description of the same features as those of Figure 15 the connecting portion 800bF is omitted, and mainly the points different from the connecting portion 800bF are described.

[0133] Similar to Figure 15 the above, a recess 810bG is provided in the connecting portion 800bG shown in such a manner that a plurality of fitting portions 850bG remain. However, the plurality of fitting portions 850bG are discretely provided at positions corresponding to Figure 16 the first protrusion 853bF and the second protrusion 855bF of Figure 15 . That is, each of the plurality of fitting portions 850bG is provided between adjacent key support portions 120bG. The plurality of fitting portions 850bG are present at positions along Figure 8 the shape (curved shape) of the recess 810bA shown as viewed from above. Therefore, when the connecting portion 800bG is mounted to the mounting portion 900bG, the connecting portion 800bG undergoes the same changes as Figure 8 the connecting portion 800bA shown and Figure 15 the connecting portion 800bG shown.

[0134] Similar to Figure 15The first protrusion 853bF and the second protrusion 855bF shown are the same. Similarly, the orientation of the black key 100bG-1 is controlled by the fitting portions 850bG that are adjacent to the black key 100bG-1 while sandwiching it in the D2 direction. That is, the orientation of the black key 100bG can be corrected by the positions of the fitting portions 850bG that are adjacent to each other with the black key 100bG sandwiched therebetween.

[0135] In the present embodiment, a structure is illustrated in which the shape of the fitting portion 850bG is circular when viewed from above, but it is not limited to this structure. For example, the fitting portion 850bG may be a polygon such as a triangle or a quadrilateral, or may also be an ellipse or an arbitrary curved shape.

[0136] As described above, according to the keyboard device according to the present embodiment, the same effects as those of the above-described embodiment can be obtained.

[0137] <Ninth Embodiment>

[0138] Figure 17 It is a diagram of a black key in a state of being removed from the mounting portion as viewed from below and a diagram of the mounting portion for mounting the black key as viewed from above in one embodiment of the present invention. Figure 17 The connecting portion 800bH shown is Figure 16 the same as the connecting portion 800bG shown. Figure 17 The mounting portion 900bH shown is Figure 16 similar to the mounting portion 900bG shown. In the following description, the description of the features that are the same as those of Figure 16 the mounting portion 900bG is omitted, and mainly the points different from the mounting portion 900bG are described.

[0139] Similar to Figure 16 In Figure 17 the mounting portion 900bH shown, a plurality of concave portions 920bH are provided. When viewed from above, the shape of the concave portion 920bH corresponds to the shape of the fitting portion 850bH. That is, the shape of the concave portion 920bH is a shape into which the fitting portion 850bH can be inserted. The plurality of concave portions 920bH are discretely provided and are arranged in a straight line in the D2 direction. The shape of the plurality of concave portions 920bh is Figure 16 different from the shape of the concave portion 920bG of

[0140] In the present embodiment, a structure is illustrated in which the shape of the concave portion 920bH is the same as the shape of the fitting portion 850bH when viewed from above, but it is not limited to this structure. When viewed from above, it is sufficient that the shape of the concave portion 920bH includes the shape of the fitting portion 850bH, and the shapes of the two may also be different.

[0141] As described above, according to the keyboard device according to the present embodiment, the same effects as those of the above-described embodiment can be obtained.

[0142] <Tenth Embodiment>

[0143] Figure 18 It is a diagram of a black key in a state of being removed from the mounting portion as viewed from below and a diagram of the mounting portion for mounting the black key as viewed from above in one embodiment of the present invention. Figure 19 It is a diagram of a black key in a state of being mounted on the mounting portion as viewed from below in one embodiment of the present invention. For ease of explanation, in Figure 19 the mounting portion 900bJ is omitted. Figure 18 The mounting portion 900bJ shown in Figure 17 is the same as the mounting portion 900bH shown in Figure 18 The connecting portion 800bJ shown in Figure 17 is similar to the connecting portion 800bH shown in Figure 17 In the following description, the same features as those of the connecting portion 800bH in

[0144] As Figure 18 shown, the plurality of key body portions 110bJ are respectively inclined in different directions randomly. In the example of Figure 18 taking the key body portion 110bJ-3 as a reference, the key body portion 110bJ-1 is inclined in the R2 direction, the key body portion 110bJ-2 is inclined in the R1 direction, the key body portion 110bJ-4 is inclined in the R2 direction, and the key body portion 110bJ-5 is inclined in the R1 direction. The plurality of fitting portions 850bJ are provided according to the respective inclinations of the plurality of key body portions 110bJ.

[0145] Specifically, in the case of the key body portion 110bJ-1 inclined in the R2 direction with respect to the reference, the fitting portion 850bJ-1 provided on the D2 direction side of the key body portion 110bJ-1 is provided closer to the D1 direction side (inside) than the fitting portion 850bJ-2 provided on the opposite side of the D2 direction of the key body portion 110bJ-1. On the other hand, in the case of the key body portion 110bJ-5 inclined in the R1 direction with respect to the reference, the fitting portion 850bJ-6 provided on the opposite side of the D2 direction of the key body portion 110bJ-5 is provided closer to the D1 direction side (inside) than the fitting portion 850bJ-5 provided on the D2 direction side of the key body portion 110bJ-5.

[0146] As Figure 19 shown, if the connecting portion 800bJ is mounted on the mounting portion 900bJ, each fitting portion 850bJ faces Figure 19Move in the direction of the arrow. Specifically, the fitting portions 850bJ-1 and 850bJ-6 move in the direction opposite to the D1 direction, and the fitting portions 850bJ-2 and 850bJ-5 move in the D1 direction. As a result, the key body portions 110bJ-1 and 110bJ-4 move in the direction opposite to the D2 direction, and the key body portions 110bJ-2 and 110bJ-5 move in the D2 direction. As a result, the key body portions 110bJ-1 to 110bJ-5 become substantially parallel.

[0147] As described above, according to the keyboard device according to the present embodiment, the same effects as those of the above-described embodiment can be obtained. It should be noted that, as described above, the key body portion 110bJ can be individually corrected by the positions of the plurality of fitting portions 850bJ.

[0148] <Eleventh Embodiment>

[0149] Figure 20 It is a view of a black key in a state of being removed from the mounting portion as viewed from below and a view of the mounting portion for mounting the black key as viewed from above in one embodiment of the present invention. Figure 20 The connecting portion 800bK and the mounting portion 900bK shown in Figure 17 are similar to the connecting portion 800bH and the mounting portion 900bH shown in Figure 17 In the following description, the description of the features similar to those of the connecting portion 800bH and the mounting portion 900bH in

[0150] is omitted, and mainly the points different from the connecting portion 800bH are described. Figure 17 Similarly, in Figure 20 the connecting portion 800bK shown in

[0151] is provided with a recess 810bK in such a manner that a plurality of fitting portions 850bK remain. Similarly, a plurality of recesses 920bK are provided in the mounting portion 900bK.

[0152] When viewed from above, the fitting portion 850bK has the same length as the concave portion 920bK. However, in a state where the connecting portion 800bK is detached from the mounting portion 900bK, the length directions of the plurality of fitting portions 850bK are different from each other. Specifically, with the fitting portion 850bK-3 as a reference, the fitting portions 850bK-1 and 850bK-2 are respectively inclined in the R1' direction, and the fitting portions 850bK-4 and 850bK-5 are respectively inclined in the R2' direction. The R1' direction is the same rotation direction as the R1 direction. The R2' direction is the same rotation direction as the R2 direction.

[0153] If the connecting portion 800bK is attached to the mounting portion 900bK, the fitting portions 850bK-1 and 850bK-2 respectively receive forces in the opposite direction of the D2 direction and become parallel to the fitting portion 850bK-3. As a result, the front ends of the key body portions 110bK-1 and 110bK-2 move in the D2 direction and become parallel to the key body portion 110bK-3. Similarly to the above, the fitting portions 850bK-4 and 850bK-5 respectively receive forces in the D2 direction and become parallel to the fitting portion 850bK-3. As a result, the front ends of the key body portions 110bK-4 and 110bK-5 move in the opposite direction of the D2 direction and become parallel to the key body portion 110bK-3.

[0154] In the first to tenth embodiments (the embodiments before the present embodiment), the position of the key body portion 110b in the D2 direction is corrected by the connecting portion 800b receiving a force in the D1 direction from the mounting portion 900b. However, in the present embodiment, the position of the front end of the key body portion 110bK in the D2 direction is corrected by the connecting portion 800bK receiving a force in the D2 direction from the mounting portion 900bK. However, in the present embodiment, the direction in which the connecting portion 800bK receives a force from the mounting portion 900bK is different from the direction in which the front end of the key body portion 110bK moves. That is, the connecting portion 800bK is attached to the mounting portion 900bK in a state where bending stress is generated, but as Figure 20 shown, this bending stress is generated by receiving a force in the D2 direction.

[0155] As described above, according to the keyboard device according to the present embodiment, the same effects as those of the above-described embodiments can be obtained.

[0156] <Twelfth Embodiment>

[0157] Figure 21 is a view of the black key in a state of being detached from the mounting portion as viewed from below and a view of the mounting portion for mounting the black key as viewed from above in one embodiment of the present invention. Figure 21 The shown mounting portion 900bL is the same as Figure 20 the shown mounting portion 900bK. Figure 21The connecting part 800bL shown is similar to Figure 20 the connecting part 800bK shown. In the following description, the features similar to those of Figure 20 the connecting part 800bK will be omitted, and mainly the points different from the connecting part 800bK will be described.

[0158] Similar to Figure 20 that, multiple fitting parts 850bL are provided in the connecting part 800bL shown. As Figure 21 shown, multiple fitting parts 850bL are provided with respect to one concave part 920bL. These multiple fitting parts 850bL are arranged side by side with the same orientation as the inclination of Figure 21 the fitting part 850bK shown. The shapes of these multiple fitting parts 850bL are different from those of Figure 20 the fitting part 850bK shown, but both have the same function. Figure 20

[0159] As described above, according to the keyboard device according to the present embodiment, the same effects as those of the above-described embodiment can be obtained.

[0160] <Thirteenth Embodiment>

[0161] Figure 22 is a view of the white keys and the mounting parts for mounting the white keys in one embodiment of the present invention as viewed from above. As Figure 22 shown, multiple white keys 100wM are connected by a connecting part 140wM. The connecting part 140wM extends linearly in the D2 direction. The multiple key body parts 110wM are respectively non-parallel. Specifically, the key body parts 110wM-1 and 110wM-3 are inclined in the R1 direction, and the key body parts 110wM-5 and 110wM-7 are inclined in the R2 direction.

[0162] A concave part 930wM is provided in the mounting part 900wM. In the concave part 930wM, a first protruding part 940wM and a second protruding part 950wM that protrude from the side wall of the concave part 930wM toward the inside in the D1 direction or the opposite direction of the D1 direction are provided in a plan view. The first protruding part 940wM and the second protruding part 950wM are provided at facing positions, that is, at the same position in the D2 direction. The first protruding part 940wM and the second protruding part 950wM are provided between adjacent white keys 100wM. The front ends of the first protruding part 940wM and the second protruding part 950wM are located at positions along Figure 10 the shape of the convex part 910bC shown in a plan view. Therefore, if the connecting part 140wM is mounted on the mounting part 900wM, the connecting part 140wM undergoes the same change as Figure 10 the connecting part 800bC shown. As a result, the key body parts 110bM-1 to 110bM-4 become substantially parallel.​

[0163] As described above, according to the keyboard device according to this embodiment, the same effects as those of the above-described embodiment can be obtained.

[0164] <The Fourteenth Embodiment>

[0165] Figure 23 It is a diagram of a black key in a state of being removed from the mounting portion as viewed from below and a diagram of the mounting portion for mounting the black key as viewed from above in an embodiment of the present invention. As Figure 23 shown, a connecting portion 800bN-1 is provided on the black key 100bN-1, and a connecting portion 800bN-2 is provided on the black key 100bN-2. Figure 24 It is a diagram of a black key in a state of being mounted on the mounting portion as viewed from below in an embodiment of the present invention. For ease of explanation, in Figure 24 the mounting portion 900bN is omitted, and only the convex portion 910bN is indicated by a dashed line. Figure 23 And Figure 24 The structure of the connecting portion 800bN-1 shown is the same as the shape of the portion of the connecting portion 800b in the regions corresponding to the black key 100b-1 in Figure 6 And Figure 7 shown. Figure 23 And Figure 24 The structure of the connecting portion 800bN-2 shown is the same as the shape of the portion of the connecting portion 800b in the regions corresponding to, for example, the black key 100b-2 in Figure 6 And Figure 7 shown. In the structures of Figure 23 And Figure 24 , regarding the portions having the same structure as Figure 6 And Figure 7 shown, the description may sometimes be omitted.

[0166] As Figure 23As shown, the longitudinal direction of the key body portion 110bN-2 of the black key 100bN-2 is orthogonal to the longitudinal direction of the concave portion 810bN-2. On the other hand, the longitudinal direction of the key body portion 110bN-1 of the black key 100bN-1 is inclined in the R1 direction with respect to the direction orthogonal to the longitudinal direction of the concave portion 810bN-1. The key body portion 110bN-2 is connected to approximately the center of the key support portion 120bN-2 in the D2 direction. On the other hand, the key body portion 110bN-1 is connected to the left side (the opposite side in the D2 direction) of the key support portion 120bN-1 in the D2 direction. A concave portion 810bN-2 is provided in the connecting portion 800bN-2 connected to the black key 100bN-2. A concave portion 810bN-1 is provided in the connecting portion 800bN-1 connected to the black key 100bN-1. In a plan view, the shape of the concave portion 810bN-2 is substantially the same as the shape of the convex portion 910bN provided in the mounting portion 900bN. On the other hand, in a plan view, the shape of the concave portion 810bN-1 is different from the shape of the convex portion 910bN.

[0167] As Figure 23 shown, in the D2 direction, the concave portion 810bN-1 of the connecting portion 800bN-1 is divided into a first fitting region 811bN, a second fitting region 813bN, a first concave region 815bN, and a second concave region 817bN. In the D2 direction, the length of the first fitting region 811bN is larger than the length of the second fitting region 813bN. However, it may also be that, in the D2 direction, the length of the second fitting region 813bN is larger than the length of the first fitting region 811bN.

[0168] The first fitting region 811bN and the second fitting region 813bN are provided at different positions in the D1 direction. Specifically, in the D1 direction, the position of the center line 814bN of the second fitting region 813bN is closer to the key body portion 110bN-1 than the position of the center line 812bN of the first fitting region 811bN. In other words, the center line 812bN of the first fitting region 811bN provided on the inclined side of the key body portion 110bN-1 is farther from the key body portion 110bN-1 than the center line 814bN of the second fitting region 813bN provided on the opposite side thereof.

[0169] As Figure 24As shown, the black keys 100bN-1 and 100bN-2 are mounted to the mounting portion 900bN by the fitting of the concave portions 810bN-1 and 810bN-2 and the convex portion 910bN. Since the shape of the concave portion 810bN-2 is substantially the same as the shape of the convex portion 910bN, the longitudinal direction of the key body portion 110bN-2 is orthogonal to the longitudinal direction of the convex portion 910bN. On the other hand, in the concave portion 810bN-1, the position of the center line 814bN of the second fitting region 813bN is closer to the key body portion 110bN-1 than the position of the center line 812bN of the first fitting region 811bN. Therefore, the black key 100bN-1 is mounted to the mounting portion 900bN in a state of being inclined in the R2 direction. As a result, the inclination of the above-described key body portion 110bN-1 is corrected, as Figure 24 shown, the longitudinal direction of the key body portion 110bN-1 approaches the direction orthogonal to the longitudinal direction of the convex portion 910bN. That is, the protruding portion 860bN has a function of correcting the position of the front end of the key body portion 110bN in the D2 direction.

[0170] <Fifteenth Embodiment>

[0171] Figure 25 are a view of the black key in a state of being removed from the mounting portion as viewed from below and a view of the mounting portion to which the black key is mounted as viewed from above in one embodiment of the present invention. As Figure 25 shown, the shape of the connecting portion 800bP-1 provided on the black key 100bP-1 is the same as the shape of the connecting portion 800bP-2 provided on the black key 100bP-2. On the other hand, Figure 23 similarly, the longitudinal direction of the key body portion 110bP-1 of the black key 100bP-1 is inclined in the R1 direction with respect to the direction orthogonal to the longitudinal direction of the concave portion 810bP-1.

[0172] The convex portion 910bP provided on the mounting portion 900bP is not Figure 23 the linear convex portion 910bN as described above. In the correction region 911bP where the black key 100bP-1 is mounted, the convex portion 910bP is inclined in the R2' direction with respect to the D2 direction and extends in the D2 direction outside the correction region 911bP. By mounting the black key 100bP-1 in the correction region 911bP, the inclination of the key body portion 110bP-1 is corrected, and the longitudinal direction of the key body portion 110bP-1 approaches the direction orthogonal to the longitudinal direction of the convex portion 910bP. That is, the convex portion 910bP in the correction region 911bP has a function of correcting the position of the front end of the key body portion 110bP in the D2 direction.

[0173] As described above, as shown in these embodiments, one embodiment of the present invention can also be applied to a single key.

[0174] In the above-described embodiment, an electronic piano is shown as an example of a keyboard device to which a hammer assembly is applied. On the other hand, the hammer assembly of the above-described embodiment can also be applied to a rotating mechanism of an acoustic piano (grand piano, upright piano, etc.). For example, in an upright piano, the opening mechanism of the above-described embodiment can be applied to a rotating mechanism having a rotating member and a support portion that rotatably supports the rotating member. In this case, the sound generating mechanism corresponds to the hammer and the string. The rotating mechanism of the above-described embodiment can also be applied to rotating members other than a piano.

[0175] It should be noted that the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist.

[0176] Explanation of Reference Numerals

[0177] 1: Keyboard device, 10: Keyboard assembly, 70: Sound source device, 80: Speaker, 90: Housing, 100: Key, 100b: Black key, 100w: White key, 110: Key main body portion, 120: Key support portion, 121b: Gap portion, 130: Hammer support portion, 140wM: Connection portion, 150w: Front key guide, 200: Hammer assembly, 210: Front end portion, 230: Weight portion, 300: Sensor, 410: Lower stopper, 430: Upper stopper, 500: Frame, 510: Front frame guide, 710: Signal conversion portion, 730: Sound source portion, 750: Output portion, 800: Connection portion, 801bA: First end, 802bA: Second end, 810b: Concave portion, 811b: First fitting region, 813b: Second fitting region, 815b: First concave region, 817b: Second concave region, 820w: Convex portion, 830bE: First protrusion, 840bE: Second protrusion, 850bF: Fitting portion, 851bF: Column portion, 853bF: First protrusion, 855bF: Second protrusion, 860bN: Protrusion, 900: Mounting portion, 901bC: First end, 902bC: Second end, 910b: Convex portion, 911bN: Correction region, 920bF: Concave portion, 930wM: Concave portion, 940wM: First protrusion, 950wM: Second protrusion.

Claims

1. A keyboard device, characterized in that, it has: a first key, the length of which is in a first direction; a mounting portion, which is fixed relative to the frame; a first connecting portion, which fixes the first key to the frame on the rotation fulcrum side of the first key; When the first connecting portion is mounted on the mounting portion in a state where it is pressed and bent by the mounting portion from any direction in a plane including the first direction and a second direction, the position of the front end of the first key in the second direction is determined, where the second direction is a direction orthogonal to the rotation plane of the first key.

2. The keyboard device according to claim 1, further having a second key with a length in the first direction and arranged with the first key in the second direction, the first connecting portion connects the first key and the second key and fixes them to the frame, by mounting the first connecting portion on the mounting portion from any direction in the plane in a state where the first connecting portion is pressed and bent by the mounting portion, the distance between the front end of the first key and the front end of the second key changes.

3. The keyboard device according to claim 1, the first connecting portion includes a first key position correcting portion provided for the first key, the direction in which the first key position correcting portion is pressed by the mounting portion is different from the direction in which the front end of the first key moves by mounting the first connecting portion on the mounting portion.

4. The keyboard device according to claim 3, having a second key with a length in the first direction and arranged with the first key in the second direction, the first connecting portion further includes a second key position correcting portion provided for the second key, the direction in which the second key position correcting portion is pressed by the mounting portion is different from the direction in which the front end of the second key moves by mounting the first connecting portion on the mounting portion.

5. The keyboard device according to claim 1, the rigidity of the mounting portion is higher than that of the connecting portion.

6. The keyboard device according to claim 1, the mounting portion is integrally formed with the frame or integrally formed with a connecting member provided between the frame and the first connecting portion, the first connecting portion is mounted on the mounting portion in a state where bending stress is generated.

7. The keyboard device according to claim 1, further having: a third key and a fourth key, the length of which is in the first direction and arranged in the second direction; a second connecting portion, which connects the third key and the fourth key on the rotation fulcrum side and fixes them to the frame; the first connecting portion is disposed above the second connecting portion, the mounting portion is provided on the upper part of the second connecting portion, the first connecting portion is mounted on the mounting portion in a state where bending stress is generated.

8. The keyboard device according to claim 6, the bending stress is generated by applying a force to the mounting portion by the first connecting portion in at least one of the first direction and the second direction.

9. The keyboard device according to any one of claims 1 to 8, The first connecting portion has a convex portion and the mounting portion has a concave portion, or the first connecting portion has a concave portion and the mounting portion has a convex portion. The first connecting portion is mounted on the mounting portion by fitting the convex portion and the concave portion.

10. A keyboard device characterized in that it has: a first key and a second key, which are arranged in a first direction and arranged in a second direction orthogonal to the first direction; a mounting portion, which is fixed relative to the frame and has a step as a concave portion or a convex portion in a third direction orthogonal to the first direction and the second direction; a first connecting portion, which contacts the step from an arbitrary direction in a plane including the first direction and the second direction and is mounted on the mounting portion, and connects and fixes the first key and the second key on the rotation fulcrum side of the first key and the second key to the frame; When the first connecting portion is detached from the mounting portion, the length directions of the first key and the second key are non-parallel.

11. The keyboard device according to claim 10, the first connecting portion includes a first key position correcting portion provided for the first key and a second key position correcting portion provided for the second key, Between the state where the first connecting portion is detached from the mounting portion and the state where the first connecting portion is mounted on the mounting portion, the direction in which the front end of the first key changes relative to the front end of the second key is different from the direction in which the first key position correcting portion changes relative to the second key position correcting portion.

12. The keyboard device according to claim 10, The rigidity of the mounting portion is higher than the rigidity of the first connecting portion.

13. The keyboard device according to claim 10, The mounting portion is integrally formed with the frame or integrally formed with a connecting member provided between the frame and the first connecting portion. When the first connecting portion is detached from the mounting portion, the shape of the first connecting portion on the plane is different from the shape of the mounting portion on the plane.

14. The keyboard device according to claim 10, further having: a third key and a fourth key, which are arranged in the first direction and arranged in the second direction; a second connecting portion, which connects and fixes the third key and the fourth key on the rotation fulcrum side of the third key and the fourth key to the frame; The first connecting portion is disposed above the second connecting portion. The mounting portion is provided above the second connecting portion. When the first connecting portion is detached from the mounting portion, the shape of the first connecting portion on the plane is different from the shape of the mounting portion on the plane.

15. The keyboard device according to any one of claims 10 to 14, The first connecting portion has a convex portion and the mounting portion has a concave portion, or the first connecting portion has a concave portion and the mounting portion has a convex portion. The first connecting portion is mounted on the mounting portion by fitting the convex portion and the concave portion in contact with each other in at least one of the first direction and the second direction.

Images