JPH09127949A - Keyboard device for electronic musical instrument and electronic piano - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a keyboard device and electronic piano which can apply the same technique as acoustic piano in the height adjustment of a keyboard, are equal in touch and appearance, compared with acoustic piano, and has a high degree of freedom in design. SOLUTION: This electronic piano has a wippen 15, a jack 17, a hammer corresponding member H, a damper corresponding member D, and a stop rail 32. The first switch SW1 of a button switch 60 is switched by a damper lever 24 when the damper corresponding member D reaches a prescribed position determined between a damper initial position D1 and a damper rotating position D2, and the second switch SW2 is pressed ON by the damper lever 24 only when the damper corresponding member D reaches the damper rotating position D2. A control device generates a sound from a speaker when the second switch SW2 is ON, and stops the sound when the first switch SW1 is changed from ON to OFF thereafter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard device for an electronic musical instrument and an electronic piano, which includes a keyboard capable of pressing a predetermined stroke depth and an action load simulation member for applying a load simulating an action to the keyboard. It is about.

[0002]

2. Description of the Related Art An electronic piano emits an electronic sound from a speaker in response to a key press / release operation of a player, and the sound emitted from the electronic piano has been improved. As a result, in recent years, it has reached a level where there is not much dissatisfaction. On the other hand, it has been pointed out that the touch feeling of the keyboard is considerably different from that of the acoustic piano, and various improvements have been made in this respect as well.

As such improvements have been made, an electronic piano having an action simulation load member substantially equivalent to the action mechanism of an acoustic piano has been developed. As shown in FIG. 5, the action load simulating member of the electronic piano includes a member 215 that corresponds to a wippen that rotates as the keyboard is rotated by a key pressing operation, and a member that corresponds to a wippen 215 that rotates as the key is pressed. The jack-equivalent member 217 that rises, the hammer-equivalent member 221 that inertially moves away from the jack-equivalent member 217 after being pushed up by the jack-equivalent member 217, and the hammer-equivalent member 221 that is in inertial movement. It is provided with a stopper 232 which comes into contact with the member 221 to prevent the hammer 221 from operating. Below the keyboard 211, a button switch 260 for detecting key depression / key release is provided. This button switch 260 has two switches inside,
When the keyboard is pressed, one switch is first pressed to generate an ON signal, and when the keyboard is further pressed to reach the stroke depth, the other switch is pressed to generate an ON signal. A control device that controls electronic sounds has been performing string striking information by generating string striking information based on the signals from the two switches of the button switch, or stopping by obtaining sound stop information. According to this electronic piano, the action mechanism is the same as that of a normal acoustic piano except that the strings are not struck, so that the touch feeling of the piano is equivalent to that of an acoustic piano.

However, in an ordinary acoustic piano, since there is not a sufficient distance between the reed and the keyboard, it is necessary to attach the button switch 260 below the keyboard 211 as in the above electronic piano. Since the interval must be widened, the height of the keyboard device is increased as a result, and there is a disadvantage that the appearance is different from that of an acoustic piano.

In addition, in a normal acoustic piano,
The height of the keyboard is adjusted by adjusting the thickness of the balance punching inserted in the gap between the reed and the keyboard. When the button switch 260 is located below the keyboard 211 as in the electronic piano, the balance punching 209 is performed. Therefore, when the keyboard height is adjusted, the on / off timing of the button switch 260 also changes, so there is the inconvenience that the height of the button switch 260 must also be adjusted.

Further, if button switches are provided in the vicinity of the wippen equivalent member 215, the jack equivalent member 217, and the hammer equivalent member 221, they are provided at complicated positions, which limits the degree of freedom in design. There was also. The present invention has been made in view of the above problems, the same method as an acoustic piano can be applied when adjusting the height of the keyboard, the touch feeling and appearance are equivalent to those of an acoustic piano, and the degree of freedom in design is high. An object is to provide a keyboard device for a large electronic musical instrument and an electronic piano.

[0007]

Means for Solving the Problems and Effects of the Invention In order to solve the above problems, the invention according to claim 1 provides a keyboard capable of pressing a predetermined stroke depth and a load imitating an action on the keyboard. In an electronic musical instrument keyboard device including an action load simulating member for performing the action load simulating member, the action load simulating member is rotatably attached to a keyboard device main body, and when the keyboard is depressed by a stroke depth, the keyboard is rotated. A member corresponding to the wippen that rotates from the initial position of the wippen to the turning position of the wippen, and a member that is rotatably attached to the keyboard device body and is biased from the turning position of the damper toward the initial position of the damper. As the corresponding member is rotated from the wippen initial position to the wippen rotation position, it is pressed by the wippen equivalent member to rotate the damper from the damper initial position. A damper corresponding member rotates to location, rotatably mounted to said Wipen equivalent member,
A jack equivalent member that is raised while rotating from the initial jack position to the jack rotation position as the member equivalent to the wippen rotates from the initial wiping position to the whip rotation position, and is rotatably attached to the keyboard device main body. While the jack-corresponding member is rotated from the jack initial position to the jack rotation position, the jack-corresponding member is initially pushed up by the jack-corresponding member and starts to rotate from the hammer initial position, and then moves apart from the jack-corresponding member and inertially moves. When,
A stopper provided in the vicinity of the damper-equivalent member, which comes into contact with the hammer-equivalent member that is inertially moving to block the operation of the hammer-equivalent member at a virtual string striking position, and which is the damper initial position. First to detect that a predetermined position defined between the damper rotation position and the damper rotation position has been reached
A detector and a detector having a second detector for detecting that the member corresponding to the damper has reached the jack rotation position.

Here, the initial position of each member represents the position of each member before the keyboard is depressed, that is, in the key released state, and the rotational position of each member is the stroke depth of the keyboard. Time, that is, the position of each member in the key-depressed state. The virtual string striking position is a position corresponding to the string striking position in a normal acoustic piano.

In such a keyboard device for an electronic musical instrument, the member corresponding to the wippen is moved from the initial position of the wippen to the turning position of the wippen when the keyboard is depressed by a predetermined stroke depth by the player's key depression operation. Rotate. Then, the member corresponding to the damper is pressed by the member corresponding to the wippen to rotate from the damper initial position to the damper rotating position. on the other hand,
The member corresponding to the jack rises while rotating from the initial position of the jack to the rotating position of the jack. While the jack-equivalent member is rotated from the jack initial position to the jack rotation position, the hammer-equivalent member is initially pushed up by the jack-equivalent member and starts to rotate from the hammer initial position, and then moves apart from the jack-equivalent member and inertially moves. . Then, the stopper comes into contact with the hammer-corresponding member that is inertially moving to block the operation of the hammer-corresponding member at the virtual string striking position. Further, the first detector of the detecting means detects that the damper equivalent member has reached a predetermined position defined between the damper initial position and the damper rotation position, and the second detector has the damper equivalent member damper. The fact that the rotation position is reached is detected. Produces sound based on the detection time of the first and second detectors.
The stop noise can be controlled appropriately.

According to such a keyboard device for an electronic musical instrument, the action load simulating member operates in the same manner as the action mechanism of a normal acoustic piano except that the string is not struck. Therefore, it is possible to obtain the effect that the touch feeling of the keyboard when the player presses a key is equivalent to the touch feeling of a normal acoustic piano.

Further, since the detecting means is provided in the vicinity of the damper-corresponding member, not under the keyboard as in the conventional case, it is not necessary to increase the distance between the reed and the keyboard, and the appearance is the same as that of a normal acoustic piano. Further, when adjusting the keyboard height, the same method as that of a normal acoustic piano (adjustment by the thickness of balance punching) can be applied as it is.

Further, if the button switch is provided near the member corresponding to the wippen, the member corresponding to the jack, and the member corresponding to the hammer, there is a problem that the degree of freedom in design is limited because the button switch is provided at a complicated position. In the present invention, since the button switch is provided in the vicinity of the damper-equivalent member having a wide mounting space, the degree of freedom in design is not limited.

Furthermore, when the second detector detects the damper-corresponding member, the sounding timing can be set, and when the first detector detects the damper-corresponding member, the sound deadening timing can be set. In this case, after the sound is generated, the sound is not stopped unless the first detector detects the damper-equivalent member, that is, unless the state where the keyboard is depressed by the stroke depth is eliminated. Therefore, the sound stop timing can be set to the same as that of a normal acoustic piano.

By the way, when the contact type switch is used as the detecting means in the present invention, since the member corresponding to the wippen presses the member corresponding to the damper to press the contact type switch, a static load is applied to the keyboard correspondingly. However, even in an ordinary acoustic piano, the damper lever is urged by the spring in the direction of coming into contact with the strings, so when the wippen (specifically, the spoon provided on the wippen) presses the damper lever, Is subject to a static load. Therefore, the touch feeling does not become unnatural even if the contact type switch is used.

As the first and second detectors, a contact type switch (a button switch or a leaf switch, etc.) that is pressed / released by a member equivalent to the damper as described above, or a member equivalent to the damper is used for shielding / passing light. A non-contact type optical switch that emits light can be used.

According to a second aspect of the present invention, in the keyboard device for an electronic musical instrument according to the first aspect, the second detector of the detecting means is urged from the damper rotating position toward the damper initial position. The member corresponding to the damper thus mounted is stopped at the damper initial position.

According to such a keyboard device of an electronic musical instrument, it is not necessary to separately provide a member (for example, a damper stop rail) for stopping the member corresponding to the damper at the damper initial position, so that the cost is reduced accordingly. A third aspect of the present invention is an electronic piano, wherein a sound is generated based on the keyboard device of the electronic musical instrument according to the first or second aspect, and when the second detector of the detecting means detects the damper equivalent member, After that, the first detector is provided with electronic sound control means for stopping the sound based on the detection of the damper equivalent member.

Here, the electronic sound control means may be constructed separately from the keyboard device (for example, a master keyboard) of the electronic musical instrument and connected to the keyboard device by a cable line or the like. In such an electronic piano, the sounding timing is when the second detector is detected, and the sound stop timing is when the first detector is subsequently detected. As a result, the same sound stop timing as that of a normal acoustic piano can be obtained.

According to a fourth aspect of the present invention, in the electronic piano of the third aspect, the electronic sound control means provides keystroke information based on when the first and second detectors detect the damper equivalent member. It is characterized in that it is obtained and sounded according to the keystroke information. In such an electronic piano, for example, it is preferable to obtain keystroke information (for example, keystroke strength) based on the time difference between the first detector detecting the damper equivalent member and the second detector detecting the damper equivalent member.

According to such an electronic piano, the keying information, the sounding timing, and the sound stopping timing can be detected by the detecting means provided at one place, so that the cost can be reduced as compared with the case where the detecting means is provided at a different position for each information. It is advantageous.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. Note that the embodiment of the present invention
It is needless to say that the present invention is not limited to the following embodiments, and can take various forms within the technical scope of the present invention. [First Embodiment] FIG. 1 is a schematic block diagram of the first embodiment, and FIG. 2 is an explanatory view of an action load simulation member of the first embodiment. As shown in FIG. 1, the electronic piano 1 is composed of an action load simulation member 2, a keyboard 11, a button switch 60, a control device 10, an electronic sound source 5 and a speaker 6.

As shown in FIG. 2, the action load simulating member 2 comprises a whip pen 15, a regulating rail 16, a jack 17, a butt 18, a hammer shank 21 provided with a hammer 23, and a catcher shank 19 provided with a catcher 20. Has been done. The action load simulating member 2 is supported by supporting members (not shown) vertically provided on the left and right of the electronic piano 1. That is, the support member includes a center rail 14 and a regulating rail 1.
6, a stop rail 32 and a hammer rail 28 are installed.

As shown in FIG. 2, the center rail 14 is provided with a wick pen 15, a butt flange 18a, and a damper flange 24a, respectively.
A butt 18 and a damper lever 24 are rotatably attached, a jack 17 is rotatably attached to the whip pen 15, a hammer shank 21 and a catcher shank 19 are fixedly attached to the butt 18, and the damper lever 24
A damper head 25 with a damper felt 26
Is fixed. The jack 17 is biased counterclockwise in FIG. 2 by the compression spring 17b. The regulating rail 16 is a member corresponding to a regulating button, and has a felt attached to the lower side of the rail.

The stop rail 32 stops the hammer 23 at the virtual string striking position HH. That is, the hammer 23 rotates counterclockwise from the hammer initial position H1 when the bat 18 is pushed up by the jack 17, and continues to rotate counterclockwise by inertial movement when the jack 17 moves away from the bat 18. However, the stop rail 32 is provided at a position where the stop rail 32 comes into contact with the hammer 23 that is performing this inertial motion and stops the operation of the hammer 23. The stop rail 32 has a felt 32a as a cushioning material on the surface facing the hammer 23.
Is affixed. The hammer rail 28 supports the hammer shank 21 at the initial hammer position H1, and a felt 28a as a cushioning material is attached to the surface facing the hammer shank 21.

The damper stop rail 35 stops the damper felt 26 at the damper initial position D1 and is provided at the position of the string of the acoustic piano. A spring 24b is provided between the damper lever 24 and the damper flange 24a. The spring 24b urges the damper lever 24 in the counterclockwise direction in FIG. 2, that is, from the damper rotating position D2 toward the damper initial position D1, and presses the damper felt 26 against the damper stop rail 35.

The hammer 23 is formed by molding acrylic resin into a substantially rectangular parallelepiped and has a specific gravity larger than that of wood. Has been converted. In the following, the bat 18, the catcher shank 19, the catcher 20, the hammer shank 21, and the hammer 23 are attached to the member H equivalent to the hammer, the damper lever 24,
The damper head 25 and the damper felt 26 are referred to as a damper equivalent member D.

As shown in FIG. 2, the button switch 60 is a first switch having a pair of fixed contacts and movable contacts in a cover 61 formed of an elastic material (rubber, synthetic resin, etc.). SW1, second switch SW
Two. The button switch 60 is arranged at a position facing the damper lever 24 on the printed circuit board P arranged on the inner side (left side in FIG. 2) of the damper lever 24. The switch of the first switch SW1 is switched by the damper lever 24 when the damper equivalent member D reaches a predetermined position (not shown) defined between the damper initial position D1 and the damper rotation position D2. Further, the second switch SW2 is a member D corresponding to the damper.
Is turned on by being pressed by the damper lever 24 only when the position reaches the damper rotation position D2.

As shown in FIG. 1, the control device 10 includes an input / output port 71, a well-known CPU 72, a ROM 73, and a RAM.
74, a backup RAM 75, a clock 76, and the like, which are configured as a logical operation circuit, which are connected to each other by a bus 77.
Connected by The control device 10 is connected so as to input signals from the first and second switches SW1 and SW2 of the button switch 60 through the input / output port 71, and a control signal through the input / output port 71. 5 is connected to output. CPU72 is R
The control signal is output to the electronic sound source 5 based on the control program stored in the OM 73. A pedal sensor (not shown) that detects the operation of a pedal mechanism such as a damper pedal or a soft pedal is also connected to the control device 10, and a signal is output to the electronic sound source 5 in consideration of this detection information. Is.

The electronic sound source 5 is provided with a recording section (not shown) for recording a performance sound of an acoustic piano, that is, a string striking sound, and a reproducing section (not shown) for reading the sound from the recording section, and a speaker. 6 is pronounced to the outside. Next, the operation of the electronic piano 1 will be described with reference to FIG.

When the player depresses the keyboard 11 by a predetermined stroke depth, the wippen 15 moves to the capstan screw 1
Since it is connected to the keyboard 11 via 2, the keyboard 11 rotates in a direction opposite to the direction in which the balance pin 7 rotates (counterclockwise in FIG. 2), and the wippen initial position W
It rotates from 1 to the wippen rotation position W2.

Along with this, the jack 17 is raised while rotating from the jack initial position J1 to the jack rotating position J2.
The operation of the hammer equivalent member H during this period will be described in detail. That is, the jack 17 is at the jack initial position J1.
When the bat 18 at the initial position H1 of the hammer is pushed up by the jack 17, the member H equivalent to the hammer is rotated in the direction opposite to the rotation direction of the keyboard 11 about the rotation shaft 18b (FIG. 2). Turn counterclockwise). Then, when the jack 17 rises to a certain degree, the jack tail 17a moves to the regulating rail 16a.
, The jack 17 rotates in the rotation direction of the keyboard 11 (clockwise in FIG. 2), comes out of the bat 18, and finally reaches the jack rotation position J2. At this time, since the bat 18 is separated from the jack 17, the hammer equivalent member H makes an inertial motion. The hammer 23 of the member H equivalent to the hammer during the inertial motion collides with the felt 32a of the stop rail 32 at the virtual string striking position HH, and its operation is blocked.

Further, the wippen 15 is the wippen initial position W.
With the rotation from 1 to the wippen rotation position W2, the damper equivalent member D reaches from the damper initial position D1 to the damper rotation position D2. The operation of the damper equivalent member D during this period will be described in detail. That is, when the wippen 15 is slightly rotated from the wippen initial position W1, the spoon 15a provided on the wippen 15 contacts the lower end of the damper lever 24. After that, when the wippen 15 rotates toward the wippen rotation position W2, the spoon 15a moves to the spring 24b.
Since the damper lever 24 is pressed against the urging force of the button switch 60 and the elastic force of the cover 61 of the button switch 60, the keyboard 11
Is subject to a static load. In the first switch SW1 of the button switch 60, the damper equivalent member D has the damper initial position D.
When it reaches a predetermined position defined between 1 and the damper rotation position D2, it is pressed by the damper lever 24 to turn from OFF to ON. Further, the second switch SW2 is pressed by the damper lever 24 when the member D corresponding to the damper reaches the damper rotation position D2, and is turned on from off.

After that, the member H equivalent to the hammer is the hammer 2
After colliding with the felt 32a of the stop rail 32, 3 is rocked back in the opposite direction. If the keyboard 11 remains depressed when the hammer equivalent member H is swung back, the wipen 15 remains in the whipen rotational position W2, the jack 17 remains in the jack rotational position J2, and the hammer equivalent member H remains in the catcher. The posture in which 20 is received by the back check 29 shown by the dotted line in FIG. 2 (hammer intermediate position HB)
Supported by Further, the member D corresponding to the damper remains at the damper rotation position D2. At this time, the first and second switches SW1 and SW2 are both pressed by the damper lever 24 and turned on.

On the other hand, if the keyboard 11 is released when the hammer-equivalent member H is rocked back, the wippen 15 returns to the wippen initial position W1 and the jack 17 returns to the jack initial position J1. Initial position H
Go back to 1. Further, the member D corresponding to the damper also returns to the damper initial position D1. At this time, the first and second switches SW
Both the switch SW1 and the switch SW2 are off because the pressing of the jack 17 is released.

Along with the operation of the action load simulation member 2 as described above, the CPU 72 of the control device 10 executes a sound generation process which is one of the control programs stored in the ROM 73. The pronunciation process will be described below with reference to the flowchart of FIG. When this process is started, first, it is determined whether or not a key depression is detected by the first and second switches SW1 and SW2 (S10). That is, when the ON signal is input to the control device 10 from the first switch SW1 and then the ON signal is input to the control device 10 from the second switch SW2, it is determined that the key depression is detected. If no key depression is detected in S10 (NO in S10), S1 is executed again.
Return to 0. On the other hand, if a key press is detected in S10 (YES in S10), the time difference ΔT between the two is calculated from the time when the ON signal is input from the first switch SW1 and the time when the ON signal is input from the second switch SW2. , This time difference △
The key pressing speed V is calculated from T by, for example, the following equation (S1
2).

V ← K / ΔT (K is a constant) Next, the key-pressing strength P is calculated from the key-pressing speed V, for example, by the following equation (S14). P ← K ′ · V (K ′ is a constant) Then, a predetermined waveform signal is obtained based on the key number and the keystroke strength P, and the electronic sound source 5 is controlled based on the waveform signal to cause the speaker 6 to generate a sound (S16). . Here, the timing of sound generation is when the second switch SW2 is turned on.

Then, it is judged whether or not the key release is detected by the first switch SW1 (S18). That is, when the off signal is input from the first switch SW1 to the control device 10, it is determined that the key release is detected. If the key release is not detected in S18 (NO in S18), the process returns to S18 again. At this time, the sound generated by the electronic sound source 5 is output from the speaker 6 so as to be gradually attenuated. On the other hand, if the key release is detected in S18 (YES in S18), the sound generation from the electronic sound source 5 is stopped (S20), and then S10 is repeated.
Return to

According to the first embodiment described above, the following effects can be obtained. The action load simulating member 2 performs the same operation as the action mechanism of a normal acoustic piano except that the string is not struck, so that the feel of the keyboard when the player presses the key is a normal acoustic sound. The effect is similar to that of a piano touch. Since the button switch 60 does not need to be provided below the keyboard 11, it is not necessary to widen the space between the reed 8 and the keyboard 11, and the appearance is the same as that of a normal acoustic piano. Also, when adjusting the keyboard height, A method similar to that of an acoustic piano (adjusted by the thickness (number of sheets) of the balance punching 9) can be applied as it is. Since the keystroke information, the sound generation timing, and the sound stop timing can be detected by the button switch 60 provided in one place, it is advantageous in cost as compared with the case where the button switch is provided for each information and timing. Since the button switch 60 is provided in the vicinity of the damper-equivalent member D, which has a large mounting space, the degree of freedom in design is greater than in the case where the button switch is provided in the vicinity of the wippen 15, the jack 17, and the hammer-equivalent member H. During the pressing of the keyboard 11 to the stroke depth, the damper lever 24 presses the button switch 60, which is a contact-type switch, so that a static load is applied to the keyboard 11 by that amount. However, even in an acoustic piano, the damper lever rotates against the urging force of the spring (which urges the damper lever to come into contact with the strings), so a static load is applied. For this reason, the touch feeling of the present embodiment does not become unnatural compared to the acoustic piano. Further, in the above embodiment, the urging force of the spring 24b and the button switch 60 are
If the sum of the elastic forces of the cover 61 is matched with the urging force of the spring of the damper lever of an ordinary acoustic piano, it is possible to reproduce even the static load of the keyboard when the damper of the acoustic piano is applied. The electronic piano 1 does not require strings, and does not require a weight member such as a frame or a column for stretching the strings. Therefore, the electronic piano 1 is considerably lighter than an acoustic piano. [Second Embodiment] FIG. 4 is a partial explanatory view of an action load simulation member of the second embodiment. As shown in FIG. 4, the second embodiment has the same configuration as the first embodiment except that an optical switch including a stepped shutter and an optical sensor is used instead of the button switch 60. The schematic block diagram of the second embodiment is similar to that of the first embodiment shown in FIG.

The damper head 25 has a stepped shutter 27 instead of the damper felt. An optical sensor 70 is provided at a position facing the stepped shutter 27, instead of the damper stop rail 35. The optical sensor 70 is provided with two pairs of light emitting elements (for example, infrared light emitting diodes) on one of two facing surfaces arranged in the direction perpendicular to the paper surface of FIG. A photo interrupter which forms optical paths 70a and 70b between light receiving elements and detects interruption / conduction of the optical paths 70a and 70b. Then, the stepped shutter 2
7 is configured to move between the facing surfaces of the optical sensor 70.

The optical path 70a is blocked by the lower step portion 27a of the stepped shutter 27 when the damper equivalent member D reaches a predetermined position (not shown) defined between the damper initial position D1 and the damper rotation position D2. -Conduction or switch is switched. Further, the optical path 70b is conducted by the upper step portion 27b of the step shutter 27 and the switch is turned on only when the damper equivalent member D reaches the damper rotation position D2.

Since the second embodiment is constructed in this manner, the same operation and effect as those of the first embodiment are obtained, and the damper stop rail 35 as a component is not necessary, and the cost is reduced accordingly. [Modification of the Embodiment] The first and second embodiments of the first embodiment.
Button switches are used as the switches SW1 and SW2, but leaf switches may be used instead. Here, the leaf switch is provided with a spring plate-shaped movable contact between two fixed contacts facing each other, and the movable contact normally contacts one fixed contact (used as the first switch SW1). , A switch that comes into contact with the other fixed contact (used as the second switch SW2) by an external force, and comes into contact with the other fixed contact again when the external force is removed.

Although the above embodiment has been described with reference to an upright type electronic piano, the present invention can be similarly applied to a grand type electronic piano.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of a first embodiment.

FIG. 2 is an explanatory diagram of an action load simulation member according to the first embodiment.

FIG. 3 is a flowchart of a pronunciation process.

FIG. 4 is a partial explanatory view of an action load simulation member of the second embodiment.

FIG. 5 is an explanatory diagram of an action simulation load member of an electronic piano which is a comparison target of the present invention.

[Explanation of symbols]

1 ... Electronic piano, 2 ... Action load simulation member, 5 ... Electronic sound source, 6.
..Speakers, 10 ... Control devices, 11
・ ・ ・ Keyboard, 15 ・ ・ ・ Wippen, 16 ・
..Regulating rails, 17 ... Jack,
18 ... Butt, 19 ... Catcher shank, 20 ... Catcher, 21 ... Hammer shank, 23 ... Hammer, 24 ... Damper lever, 25 ... Damper head, 26 ...
Damper felt, 28 ... Hammer rail, 3
2 ... Stop rail, 35 ... Damper stop rail, 60 ... Button switch, 61
... Cover, SW1, ... First switch, SW
2 ... second switch,

Claims (4)

[Claims] 1. A keyboard device for an electronic musical instrument, comprising a keyboard capable of pressing a predetermined stroke depth and an action load simulation member for applying a load simulating an action to the keyboard, wherein the action load simulation member comprises: A member equivalent to a wippen that is rotatably attached to the keyboard device body and that rotates from the initial position of the wippen to the wippen rotation position with the rotation of the keyboard when the keyboard is depressed by the stroke depth. The wippen equivalent member is rotatably attached so as to be biased from the damper rotation position toward the damper initial position. A member corresponding to the damper that is pressed to rotate from the initial position of the damper to the rotating position of the damper, and a member corresponding to the wippen so as to be rotatable. And a jack equivalent member that rises while rotating from the initial jack position to the jack rotation position as the member equivalent to the wippen rotates from the initial wiping position to the whip rotation position While attached, the jack-equivalent member is initially pushed up by the jack-equivalent member and starts to rotate from the hammer initial position while the jack-equivalent member is rotated from the jack initial position to the jack rotation position, and then moves apart from the jack-equivalent member and inertially moves. A hammer-equivalent member, a stopper that abuts the hammer-equivalent member that is in inertial motion to block the operation of the hammer-equivalent member at a virtual string striking position, and is provided in the vicinity of the damper-equivalent member. A first detector for detecting that the vehicle has reached a predetermined position defined between the damper initial position and the damper rotation position. And a detection means having a second detector for detecting that the damper-corresponding member has reached the jack rotation position, and a keyboard device for an electronic musical instrument. 2. The second detector of the detecting means stops the damper equivalent member mounted so as to be biased from the damper rotation position toward the damper initial position at the damper initial position. The keyboard device for an electronic musical instrument according to claim 1. 3. A keyboard device for an electronic musical instrument according to claim 1 or 2, wherein a sound is generated based on when the second detector of the detecting means detects the damper equivalent member, and then the first detector corresponds to the damper. An electronic piano, comprising: electronic sound control means for making a sound stop when a member is detected. 4. The electronic sound control means obtains keystroke information based on when the first and second detectors detect the damper-equivalent member, and produces a sound based on the keystroke information. Electronic piano.