JPH09106280A - Keyboard device of electronic musical instrument, and electronic piano - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make attachment and adjustment easy and to obtain nearly the same touch response with an acoustic piano as well as a touch feeling. SOLUTION: A jack sensor 10 detects the abutting timing and abutting strength of a jack corresponding member 28 and sounding timing and sounding strength are controlled through the detection. Further, a damper sensor 8 detects a damper corresponding member 45 coming into contact and sound stop control is performed through the detection. The abutting of the jack corresponding member 28 corresponds to the string butting of the acoustic piano, so the same touch response with the acoustic piano is obtained as to sounding timing and sounding strength. Further, the contacting of the damper corresponding member 45 with the damper sensor 8 is the same with a sound stop of the acoustic piano, so the same touch response with the acoustic piano is obtained as to sound stop timing.

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 that apply a load simulating an action to the keyboard.

[0002]

2. Description of the Related Art An electronic piano emits an electronic sound from a speaker in response to a player's key depression / release operations. As a result of the improvements made to the sound produced by such an electronic piano, it has become unsatisfactory in recent years. You have reached a level you don't have. On the other hand, it has been pointed out that the touch feeling of the keyboard is significantly different from that of an acoustic piano, and various improvements have been made in this regard as well.

That is, an electronic piano equipped with an action load simulation member has been developed in order to bring the touch feeling of the keyboard closer to that of an acoustic piano. For example, as shown in FIG. 11, it is possible to swing around the axis P10, and the key P
12 having a hammer arm P14 that presses the rear end portion of the key 12 from above, or as shown in FIG. 12, it is swingable around a shaft P16, and the key P18 is pressed from below to allow the tip of the key P18 to swing. Hammer arm P20 to lift
Is known (Japanese Patent Laid-Open No. 4-347895).
Reference). Each of the action load simulation members shown in FIGS. 11 and 12 was developed in consideration of an electronic piano having a low roof, and for the purpose of bringing it closer to an acoustic piano as much as possible.

However, in an acoustic piano, the wippen, jack, and bat have different axes, swing around each axis, and the bat separates from the jack at different timings depending on the key-pressed state, so that the keyboard The touch feeling is complicated.

On the other hand, the above-mentioned FIG. 11 and FIG.
In the keyboard equipped with the action load simulation member as shown in, the weight swings around one axis,
There was a problem that the touch feeling of the keyboard became monotonous compared to the acoustic upright piano.

To solve this problem, Japanese Patent Application No.
In No. 136740, by using a member equivalent to a wippen, a member equivalent to a jack, and a member equivalent to a hammer as an action load simulation member, an electronic piano with a touch feeling almost equivalent to an acoustic piano was proposed.

[0007]

However, although the touch feeling is almost the same as that of an acoustic piano, the touch response, that is, the sounding timing for sounding a key or releasing a key, the sound intensity or the sound stopping timing is the same as that of the previous electronic piano. Similarly, it remained in a different state from the acoustic piano. That is, since the operation of the keyboard is not simply transmitted to the hammer, but the transmission state varies depending on the speed of the key depression, it was impossible to obtain all the information on the keyboard.

In order to approximate the electronically detected key pressing / key releasing operation to the touch response of the acoustic piano, it is considered to detect the key pressing / key releasing operation by any one of the action load simulation members. did. But,
At any position, the main elements of touch response, such as sounding timing, sound intensity, and dead sound timing, cannot all be set to the same level as the acoustic piano, or even if they can be set to the same level. Due to space constraints, it was difficult to arrange and adjust multiple sensors, and it was not possible to approximate the touch response of an acoustic piano.

The present invention solves such a problem, the arrangement of the sensor is easy, and not only the touch feeling but also the touch response is almost the same as that of the acoustic piano. The purpose is.

[0010]

In the keyboard device for an electronic musical instrument according to claim 1, the action load simulation member is swingably supported, and a wippen that swings as the keyboard swings by a key depression operation. An equivalent member, a damper equivalent member that is swung by the wippen equivalent member that is swung by a key pressing operation and is swung from a sound stop equivalent position to a non-sound equivalent position.
A jack-equivalent member that is swingably attached to the wippen-equivalent member and that rises as the wippen-equivalent member swings by a key operation, and is pushed up by the jack-equivalent member while the jack-equivalent member rises to a predetermined position. The jack-equivalent member rises to a predetermined position, and then collides with the hammer-equivalent member that is separated from the jack-equivalent member and inertially moves, and collides with the tip of the inertially-equivalent hammer equivalent member. Since it has a stopper that prevents the movement of the hammer equivalent member, the touch feeling of the keyboard is almost the same as that of an acoustic piano.

Further, the first sensor detects the data corresponding to the string striking timing and the data corresponding to the string striking strength from the member corresponding to the jack which moves in response to the key depression operation. The second sensor detects the timing at which the member corresponding to the damper returns to the position corresponding to the noise stop. As described above, the detection for determining the timing of sound generation and the strength of sound generation is performed by the first sensor that detects the data corresponding to the string striking timing and the data corresponding to the string striking strength from the jack equivalent member.

The jack-equivalent member applies its own kinetic energy to the hammer-equivalent member. For this reason,
It is possible to predict the position and kinetic energy of the member corresponding to the hammer by detecting the operation of the member corresponding to the jack, that is, the position and kinetic energy thereof. In particular, the position and kinetic energy of the jack-equivalent member after the jack-equivalent member gives kinetic energy to the hammer-equivalent member and separates from the hammer-equivalent member are the same as the position and kinetic energy of the hammer-equivalent member during inertial motion. It corresponds.

Therefore, from the position and kinetic energy of the jack-equivalent member, the timing at which the hammer-equivalent member reaches the string-equivalent position by inertial movement, that is, the string-striking timing,
And, the kinetic energy of the member corresponding to the hammer at that time, that is, the string striking strength can be predicted.

In this way, the first sensor detects the data corresponding to the string striking timing and the data corresponding to the string striking strength from the member corresponding to the jack which moves in response to the key depression operation, and based on this detection. By controlling the sound generation, it is possible to obtain the same touch response as that of the acoustic piano in the sound generation timing and sound intensity generated according to the key pressing operation.

Further, in comparison with directly detecting the position and kinetic energy of the hammer-equivalent member, the jack-equivalent member after applying kinetic energy to the hammer-equivalent member,
Since the jack-equivalent member itself is lighter than the hammer-equivalent member and the operation speed is low, the momentum is low. Therefore, for example, when the first sensor detects the position and kinetic energy of the jack-equivalent member by contact with the jack-equivalent member, the impact received from the jack-equivalent member is received from the hammer-equivalent member. Since the load is smaller than that of the first sensor, the load on the first sensor is reduced, and the life of the first sensor can be extended. Also, the detection state becomes stable.

Furthermore, the second sensor detects the timing at which the member corresponding to the damper returns to the position corresponding to the noise stop. Even in an actual acoustic piano, since the damper contacts the strings to stop the sound, it is possible to reliably obtain the stop timing. If this sound stop timing is to be obtained from the operation of the jack-equivalent member like the first sensor, two sensors must be arranged in a very limited space around the jack-equivalent member. In addition, the mounting positions must be arranged so that they can be adjusted independently, which makes mounting and adjustment extremely difficult, and causes a problem in workability.

For this reason, the first sensor is arranged on the member corresponding to the jack, and the second sensor is arranged on the member corresponding to the damper. In this way, it is easy to install and adjust each sensor, and it is possible to reliably obtain the sound generation timing, sound intensity, and sound stop timing in a state equivalent to an acoustic piano, and the touch response is almost equal to that of an acoustic piano. it can.

The first sensor detects the timing of contact with the member corresponding to the jack that moves in response to a key depression operation as data corresponding to the string striking timing, and the strength of the contact corresponds to the string striking strength. The data may be detected as data to be processed. The first sensor may come into contact with any position of the member corresponding to the jack. For example, the side surface of the jack-equivalent member may be provided, but when the jack-equivalent member rises to a predetermined position, the first button is provided on the regulating-button-equivalent member with which the jack-tail-equivalent member of the jack-equivalent member contacts. The contact timing with the jack tail equivalent member may be detected as data corresponding to the string striking timing, and the strength of the contact may be detected as data corresponding to the string striking strength. In the case where the first sensor is in contact with the side surface of the jack-equivalent member and the first sensor has a property as a cushioning material such as rubber or felt, the first sensor is the jack-equivalent member. Can also function as a stopper. By doing so, it is not necessary to specially provide a stopper such as a jack stopper felt equivalent member for a jack equivalent member.

The second sensor may directly capture the state of the damper-equivalent member, but may indirectly capture the operation of the damper-equivalent member from the operation of a member attached to the damper-equivalent member. The first sensor and the second
One or both of the sensors may be rubber switches as described below. If you use a rubber switch, the material cost is reduced,
Moreover, the buffering effect as a stopper is high.

The second sensor may also serve as a stopper for restricting the swing of the member corresponding to the damper, and in this case, the stopper for the member corresponding to the damper can be omitted. In the electronic piano configured by adding the electronic sound generation control means to the keyboard device described above, the electronic sound generation control means determines the sound generation timing based on the data corresponding to the string striking timing detected by the first sensor. Control and
The sound intensity is controlled based on the data corresponding to the string striking strength detected by the first sensor, and the sound stop timing is determined based on the timing at which the damper equivalent member detected by the second sensor returns to the sound stop equivalent position. By controlling, it is possible to obtain the same touch feeling and touch response as those of the acoustic piano described above.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] As shown in the schematic block diagram of FIG. 1, an upright type electronic piano 2 according to a first embodiment includes an action load simulation member 4, a keyboard 6, and a second sensor having the same number as that of the keyboard 6. , A jack sensor 10 as a first sensor, a control device 12, an electronic sound source 14, and a speaker 16 in the same number as the number of keyboards 6. Among them, the action load simulation member 4, the keyboard 6, the damper sensor 8 as the second sensor in the same number as the number of the keyboard 6, and the jack sensor 10 as the first sensor in the same number as the number of the keyboard 6 are the keyboard device. Is.

As shown in FIG. 2, the action load simulating member 4 includes a capstan screw-corresponding member 20 and a Wippen flange-corresponding member 22 which move up when the keyboard 6 swings clockwise in the drawing with the balance pin 18 as a fulcrum. Is swingably supported by the center rail equivalent member 24 via
A member corresponding to a wippen 26 that swings in the direction opposite to the swinging direction of the keyboard 6 when the member 20 corresponding to the capstan screw rises is swingably connected to the member 26 corresponding to the wippen, and a member 28a corresponding to the jack tail is regulated. A jack-equivalent member 28 that ascends together with the wippen-equivalent member 26 until it comes into contact with the equivalent member 30, and a center of a bat-flange-equivalent member 32a that is in contact with / separated from the jack-equivalent member 28 and is fixed to the center rail-equivalent member 24. A bat-corresponding member 34 swingably supported by the pin-corresponding member 32b, and a bat-corresponding member 34
And the bat equivalent member 34 is connected to
The hammer shank equivalent member 36 that swings in the direction opposite to the swing direction of the keyboard 6 when pushed up by 8, and the catcher shank projecting from the bat equivalent member 34 so as to project in the direction orthogonal to the hammer shank equivalent member 36. Corresponding member 38, catcher equivalent member 40 attached to the tip of catcher shank equivalent member 38, and hammer equivalent member 4 attached to the tip of hammer shank equivalent member 36.
2 and a member equivalent to the hammer shank that was rocked back after the key was pressed
A member 4 corresponding to a hammer rail equipped with an abutting portion 44a for abutting against the side portion of 6 to reduce the vibration of the member 42 corresponding to a hammer.
4 and a damper-corresponding member 45 swingably supported by the center rail-corresponding member 24 and swung by the operation of a damper spoon 26a attached to the Wippen-corresponding member 26.

Unlike the usual acoustic upright piano, the hammer equivalent member 42 does not have a hammer felt, but the center of gravity is designed in consideration of the weight of this hammer felt. Further, the damper equivalent member 45 does not have a damper felt on the damper head equivalent member 45a, but the center of gravity is designed in consideration of the weight of the damper felt.

A jack sensor 10 is provided facing the side surface 28b of the jack-equivalent member 28. The jack sensor 10 is mounted on a board 30b extending from the regulating button equivalent member 30 and also serves as a jack stopper felt equivalent member, and is provided at a position where it can contact the side surface 28b of the jack equivalent member 28 when a key is pressed. . The contact position between the jack sensor 10 and the jack equivalent member 28 is adjusted by the bending angle of the board 30b with respect to the regulating button equivalent member 30 or the rotation of the adjusting screw 30a screwed to the regulating rail 31a. The board 30b is moved up and down together with the member 30 corresponding to the regulating button to be adjusted. The member 30 corresponding to the regulating button is rotatable with respect to the adjusting screw 30a, but the guide rail 31a of the regulating rail 31a fixed to the tip of the regulating bracket 31 makes it possible to adjust the vertical position without rotating. There is.

The jack-corresponding member 28 pushes up the bat-corresponding member 34 by its rising, and the bat-corresponding member 34 is pushed.
2, the hammer-corresponding member 42 is swung counterclockwise, and when the jack-tail-corresponding member 28a of the jack-corresponding member 28 contacts the regulating-button-corresponding member 30, the bat-corresponding member 34 becomes Due to inertial movement away from the jack-equivalent member 28, the hammer-equivalent member 42 swings counterclockwise until it collides with a hammer stopper felt 44a as a cushioning material of the hammer stopper 44.

At this time, the jack sensor 10 comes into contact with the side surface 28b of the jack-corresponding member 28 after being separated from the bat-corresponding member 34, functions as a jack stopper felt-corresponding member, and stops the jack-corresponding member 28.
The jack sensor 10 is a hollow body made of rubber, and is crushed when the jack-equivalent member 28 comes into contact therewith, so that the inner conductive surface connects the inner terminals.

An example of this jack sensor 10 is shown in FIG.
It is shown in the sectional view of FIG. From the rubber head 11a of the jack sensor 10, two plate-like projecting portions 11b and 11c project into the jack sensor 10 with different projecting amounts, and three plate-like projecting portions 11b and 11c project on the bottom plate 11d inside the jack sensor 10. Terminals 11e, 11f, 11g are provided.

When the key is depressed, the jack-equivalent member 2
When the side wall 11h is crushed by 8 by a predetermined amount, the first conductive surface 11i at the tip of the plate-like protruding portion 11b having the larger protruding amount.
Short-circuits the terminals 11e and 11f. That is, the first contact of the jack sensor 10 is turned on. Furthermore, the side wall 11h
When the plate is crushed, the plate-like protruding portion 11 with the smaller protruding amount
The second conductive surface 11j at the tip of c short-circuits the terminals 11f and 11g. That is, the second contact of the jack sensor 10 is turned on.

As a result, the control device 12 is controlled by the control device shown in FIG.
Between the signal lines 11k and 11m shown in (b) or the signal line 11
The contact timing of the jack-equivalent member 28 can be detected by detecting the change in impedance between m and 11n.
The contact strength (contact speed) can be detected by the time difference between the impedance change between the signal lines 11k and 11m and the impedance change between the signal lines 11m and 11n.

The damper sensor 8 is provided at a position where it is crushed by the damper head equivalent member 45a when the key is released. The damper sensor 8 is made of a rubber switch similar to the jack sensor 10, but has one plate-like protrusion and one conductive surface at its tip. Therefore, when the damper head equivalent member 45a comes into contact with the key when the key is released and the damper sensor 8 is crushed, the impedance between the pair of signal lines changes, that is, the damper sensor 8 is turned on. It is possible to detect the timing of returning from the equivalent position to the sound stop equivalent position. While the keyboard 6 is released (while the key is released), the damper head equivalent member 45a continues to crush the damper sensor 8 and the damper sensor 8 continues to generate an ON signal.

When the keyboard 6 is pressed during key depression, the damper spoon 26a pushes the lower end portion 45b of the damper equivalent member 45, and the damper lever spring equivalent member 45.
The damper equivalent member 45 is swung clockwise until it comes into contact with the damper stop rail 45d against the urging force of c. As a result, the damper head equivalent member 45a is separated from the damper sensor 8, the shape of the damper sensor 8 is restored, and the signal of the damper sensor 8 is turned off. As long as the key is pressed, the damper spoon 26a pushes the lower end portion 45b of the damper equivalent member 45, so that the damper sensor 8 continues to be in the off state.

Next, when the key is released, the capstan screw-corresponding member 20 is lowered and the damper spoon 26a stops pressing the lower end portion 45b of the damper-corresponding member 45, so that the damper lever spring-corresponding member 45c urges the damper. The corresponding member 45 crushes the damper sensor 8. Therefore, the damper sensor 8 switches from the off signal to the on signal. The key release timing can be detected by the timing of the change of the signal from off to on. The control device 12 can control the sound stop timing based on the key release timing.

As shown in FIG. 1, the controller 12 has an input / output port 52, a well-known CPU 54, a ROM 56, and a RAM.
58, a backup RAM 60, a clock 62, and the like, which are configured as a logical operation circuit, which are connected to each other by a bus 64.
Connected by The control device 12 includes an input / output port 5 in addition to the damper sensor 8 and the jack sensor 10.
2 and is also connected to the electronic sound source 14 via the input / output port 52.

The CPU 54 detects the time difference between the terminal connection timings of the conductive surfaces 11i and 11j of the jack sensor 10 and the terminal connection timings of the conductive surfaces 11i and 11j, and the signal of the damper sensor 8 is turned on from off. The timing of switching to is also detected, and a signal is output to the electronic sound source 14 based on these detection data and the control program stored in the ROM 56. Although not shown, a pedal sensor that detects the operation of a pedal mechanism such as a damper pedal or a soft pedal is also connected to the control device 12, and a signal is output to the electronic sound source 14 in consideration of this detection information. It is a thing.

The electronic sound source 14 is provided with a recording section for recording the performance sound of an acoustic piano, that is, a string striking sound, and a reproducing section for reading the sound from this recording section. It is fixed to the outside and sounds to the outside through the speaker 16. As shown in FIGS. 3 and 4, the speaker 16 is attached to the player side, that is, the front side by a back plate 48.

Next, the operation of the upright electronic piano 2 having the above configuration will be described. When the player presses a key on the keyboard 6, as shown in FIG.
6 swings in the direction opposite to the swinging direction of the keyboard 6 (counterclockwise in the figure), and accordingly, the jack-equivalent member 28 rises to push up the bat-equivalent member 34. Then, the bat-corresponding member 34 swings together with the hammer shank-corresponding member 36 and the hammer-corresponding member 42 in the direction opposite to the swinging direction of the keyboard 6 (counterclockwise in the drawing). And the member 2 corresponding to the jack
When 8 rises to a predetermined position, the jack-tail-corresponding member 28a contacts the regulating-button-corresponding member 30, so that the jack-corresponding member 28 swings largely in the swinging direction of the keyboard 6 (clockwise in the drawing), and the bat-corresponding member 28 corresponds. Member 34
Separate from. Therefore, the bat-corresponding member 34, after the jack-corresponding member 28 is separated, performs inertial movement together with the hammer shank-corresponding member 36 and the hammer-corresponding member 42. After that, the member 28 corresponding to the jack is moved to the jack sensor 1
The side surface 28b of the hammer 42 comes into contact with the 0 and stops, and the tip of the hammer-equivalent member 42 collides with the hammer stopper 44 and its operation is blocked.

Next, the tone generation processing by the control device 12 when the above-described performance is performed will be described with reference to the flowchart of FIG. This process is an interrupt process started when the first conductive surface 11i of the jack sensor 10 short-circuits the terminals 11e and 11f (hereinafter, represented by "on"). When this processing is started, first, the first conductive surface 11i of the jack sensor 10 is turned on (first contact is turned on) by the contact of the side surface 28b of the jack-equivalent member 28, and then the second side thereof is turned on within a predetermined time. It is determined whether the conductive surface 11j is turned on (the second contact is turned on) (S110). That is, after the ON signal is input to the control device 12 by the short circuit of the first conductive surface 11i of the jack sensor 10, the ON signal is input to the control device 12 by the short circuit of the second conductive surface 11j of the jack sensor 10 within a predetermined time. When the contact is made, it is determined that the contact of the member 28 corresponding to the jack has been detected, that is, it is the contact timing. The predetermined time is set to be a little longer than the time from the first contact on to the second contact on, which can be taken when the key operation is normally performed.

Therefore, in step S110, if the ON signal from the second conductive surface 11j of the jack sensor 10 is not detected within the predetermined time (NO in step S110).
The process is terminated as it is, and the process waits until it is turned on by the first conductive surface 11i of any of the jack sensors 10 again.

On the other hand, in S110, when the ON signal from the second conductive surface 11j is detected within the predetermined time, it is determined that the effective operation of the jack equivalent member 28 is detected (YES in step S110), and the input / output port is determined. 52 or RAM
The time difference ΔT between the timing of inputting the ON signal by the first conductive surface 11i of the jack sensor 10 and the timing of input of the ON signal by the second conductive surface 11j stored in 58 is obtained, and the contact is made from this time difference ΔT. Strength (corresponding to string striking strength) P is calculated by, for example, the following formula (S12)
0).

[0040]

(Equation 1)

Here, K is a constant. Then, the frequency and amplitude are determined based on the position of the jack sensor 10 in the sound range and the contact strength P to obtain a predetermined waveform signal, and the electronic sound source 14 is controlled based on the waveform signal to control the speaker. 1
6 is sounded (S130).

Thereafter, the detection of contact of the damper-corresponding member 45 by the damper sensor 8 at the same position on the range is awaited (S140). That is, when the signal of the damper sensor 8 is switched from off to on, the damper equivalent member 4
It is determined that the contact of No. 5 has been detected (Y in step S140
ES), and stop sounding from the electronic sound source 14 (S15
0), the process is temporarily terminated. After that, the jack sensor 10
The process of FIG. 5 is repeated every time the first conductive surface 11i is turned on. If a plurality of keys are pressed, the processing of FIG. 5 is executed in parallel according to the number of pressed keys.

The upright type electronic piano 2 of the first embodiment has the following effects. . Detection for determining the timing of sound generation and the strength of sound generation is performed by the jack sensor 10 that directly detects the contact timing and the strength of contact of the jack equivalent member 28 that gives kinetic energy to the bat equivalent member 34.

Since the bat equivalent member 34 is integrated with the hammer equivalent member 42 via the hammer shank equivalent member 36, the jack equivalent member 28 becomes the hammer equivalent member 4.
It means giving 2 kinetic energy. The state in which the tip of the hammer-corresponding member 42 collides with the hammer stopper 44 by the kinetic energy is the same as the state in which the hammer in the acoustic piano hits the strings. From this, the contact timing of the jack-equivalent member 28 that gives kinetic energy to the hammer-equivalent member 42 is data corresponding to the timing of striking a string in the acoustic piano, and the jack-equivalent member 2
The contact strength of No. 8 is data corresponding to the string striking strength in the acoustic piano.

Therefore, the jack sensor 10 detects the contact timing and the strength of the contact of the jack-equivalent member 28, and the controller 12 calculates an appropriate sounding timing and sounding strength based on this detection to generate a sound. By controlling, it is possible to obtain the same touch response as that of the acoustic piano in the key depression operation.

Further, the damper sensor 8 detects the timing at which the damper head equivalent member 45a of the damper equivalent member 45 contacts. Damper head equivalent member 45
Since the contact of a corresponds to the operation of the damper head in contact with the strings and absorbing the vibration thereof in the acoustic piano, the control device 12 can obtain a reliable sound stop timing from the damper sensor 8.

If the stop timing is to be obtained from the contact timing with the jack-equivalent member 28 like the jack sensor 10, the jack sensor 10 is provided around the jack-equivalent member 28 as described above. Since there is not enough space for disposing the damper sensor 8 and proper disposition is extremely difficult, workability of assembly and adjustment is deteriorated. However, in the present invention, the damper sensor 8 is disposed around the jack-equivalent member 28. There's no such thing.

As described above, the jack sensor 10 detects the contact timing and the contact strength with the jack-equivalent member 28, and the damper sensor 8 has the damper head-equivalent member 45.
By detecting the contact timing of a, it is possible to reliably obtain the sound generation timing, the sound generation intensity, and the sound stop timing in a state equivalent to an acoustic piano, and the touch response can be almost equal to that of an acoustic piano.

[0049] Since the jack sensor 10 is composed of a rubber switch and also serves as a member equivalent to the jack stopper felt of the jack equivalent member 28, it is not necessary to specially provide the member equivalent to the jack stopper felt. . Wippen equivalent member 26, jack equivalent member 28,
Like the acoustic piano, the bat-corresponding members 34 swing about their own axes. Further, the hammer-corresponding member 42 starts to swing when the bat-corresponding member 34 is pushed up by the jack-corresponding member 28, and then the jack-corresponding member 28 is moved by the bat-corresponding member 34.
Inertial motion is performed by separating from the above, and the hammer equivalent member 42 during this inertial motion is moved to the hammer stopper 4
Since 4 is stopped, the timing of let-off (the jack-equivalent member 28 separates from the bat-equivalent member 34) is similar to that of a normal acoustic piano. Therefore, even though it is an electronic piano, the same complex touch feeling as that of an acoustic piano can be obtained.

[0050] The member equivalent to the jack 28 is pressed by pressing the key.
And the jack sensor 10 come into contact with each other, the jack sensor 1
Since 0 is a rubber switch in particular, the rubber material serves as a cushioning material, and the generation of abnormal noise is particularly small. . At first glance, the interior and action parts are similar to those of an acoustic piano, providing a solid interior and beauty.

[0051] Since it is not necessary to stretch the strings, a weight member such as a frame and a pillar is not required as compared with an acoustic piano, and a damper is not required, so that weight reduction and cost reduction can be achieved. . The jack-equivalent member 28 after applying the kinetic energy to the hammer-equivalent member 42 has a low momentum because the jack-equivalent member 28 itself is lighter than the hammer-equivalent member 42 and the operation speed is low. Therefore,
For example, the jack sensor 10 may be the jack equivalent member 28.
Since the impact received from the jack-equivalent member 28 due to the contact with is smaller than that received from the hammer-equivalent member 42, the jack sensor 10 receives a small load and can have a long life. Also, the detection state becomes stable.

[0052] Since it is not necessary to provide a sensor below the keyboard 6, it is possible to prevent the portion of the keyboard 6 from becoming high. [Second Embodiment] In the second embodiment, as shown in FIG. 7, the jack sensor 10 is provided at the tip of the regulating button equivalent member 30, and the regulating button equivalent member 30 does not have the substrate 30b. .

When the player presses the keyboard 6, the wippen equivalent member 26 swings in the direction opposite to the swing direction of the keyboard 6 (counterclockwise in the figure), and the jack equivalent member 28 rises accordingly. The member 34 corresponding to the bat is pushed up. Then, the bat-corresponding member 34 swings together with the hammer shank-corresponding member 36 and the hammer-corresponding member 42 in the direction opposite to the swinging direction of the keyboard 6 (counterclockwise in the drawing). Then, when the jack-equivalent member 28 rises to a predetermined position, the jack-tail-equivalent member 28a moves to the jack sensor 1 of the regulating button-equivalent member 30 as shown by a dashed line in FIG.
Since it abuts against 0, the jack-equivalent member 28 swings largely in the swinging direction of the keyboard 6 (clockwise in the drawing) and is separated from the bat-equivalent member 34. As a result, the hammer-corresponding member 42 shifts to inertial motion.

The jack sensor 10 determines the contact timing and the contact strength of the jack tail equivalent member 28a which is a part of the jack equivalent member 28 immediately before the hammer equivalent member 42 is inertially moved by separating the bat equivalent member 34. It is detecting. The moving state of the jack-equivalent member 28 immediately before the inertial movement of the hammer-equivalent member 42 is a state in which the kinetic energy is almost transmitted to the hammer-equivalent member 42, and corresponds to the state during the inertial movement of the hammer-equivalent member 42 that occurs thereafter. doing. Therefore, also in the jacktail-equivalent member 28a, the contact timing and the contact strength correspond to the timing and the strength of the string striking in the acoustic piano, and the jack sensor 10 that detects this corresponds to the jack sensor 10 of the first embodiment described above. Jack sensor 10
Since it operates exactly the same as the above, it is possible to produce the same effect as the first embodiment except the above. Of course, since the jack stopper felt equivalent member 31c is provided, no abnormal noise is generated.

[Third Embodiment] In the third embodiment, instead of the position where the damper sensor 8 of the first embodiment comes into contact with the member 45a corresponding to the damper head, as shown in FIG. The damper sensor 8 is provided at a position where the contact state with the lower end portion 45b is detected. Further, the damper stop rail 45d does not exist. The other configuration is the same as that of the first embodiment, and thus detailed description thereof is omitted.

Therefore, when the player presses the key, the damper spoon 26a moves to the lower end portion 4 of the damper-corresponding member 45.
Since 5b is pressed against the damper sensor 8, the damper sensor 8 is crushed by the lower end portion 45b of the damper equivalent member 45, and the damper sensor 8 is on during that time. When the keyboard 6 is returned to the original state by the player's key release operation, the damper spoon 26a stops pressing the lower end portion 45b of the damper equivalent member 45, and the damper sensor 8 is also returned to its original state and turned off.

Therefore, if the sound stop timing is set at the time when the damper sensor 8 is turned off from the on state, the damper sensor 8 at the position of the above-described first embodiment operates exactly the same as that of the first embodiment. Can produce the same effect as. Further, since the damper sensor 8 also serves as a stopper for restricting the swing of the damper-corresponding member 45 when the key is pressed, the damper stop rail 45d can be omitted as compared with the first embodiment.

[Fourth Embodiment] The fourth embodiment is shown in FIG.
As shown in FIG. 1, the jack sensor 1 according to the second embodiment
The mounting position of 0 and the mounting position of the damper sensor 8 according to the third embodiment are combined. Other configurations are the same as those of the first to third embodiments, and the effect is also a combination thereof, so that detailed description will be made. The description is omitted.

[Other] The position of the jack sensor 10 is
As shown by the broken lines in the first and third embodiments, it may be provided at a position corresponding to a jack stopper felt equivalent member.
That is, instead of the jack stopper felt equivalent member 31c shown in the second and fourth embodiments, the jack sensor 10 may be provided on the side surface of the regulating rail 31a toward the jack equivalent member 28.

Instead of the jack sensor 10 shown in FIG. 6, a so-called leaf switch can be realized with a metal spring 70 as shown in FIG. That is, the spring 70 has two arms 72 and 74 at the tip,
The base end is electrically connected to the terminal 76. Therefore, the jack-equivalent member 28 has the intermediate portion 70 of the spring 70.
When a is pushed down, if the spring 70 is distorted by a predetermined amount, the spring 70
Of the longer arm 72 of the arms 72, 74
2a comes into contact with the terminal 78, and when the spring 70 is further distorted by a predetermined amount, the tip 74a of the other arm 74 of the spring 70 is fixed to the terminal
Touch 0.

As a result, first, the terminals 76 and 7 are
8 is short-circuited, and then the terminal 76 and the terminal 80 are short-circuited, so that the contact timing and the contact strength are detected as in the case of the jack sensor 10 shown in FIG. be able to. In addition, the spring 70 is the jack-equivalent member 28
In order to prevent the spring 70 from being completely crushed, a rubber cushioning material 82 is arranged on both sides or the periphery of the spring 70. If the jack-equivalent member 28 contacts the cushioning material 82, the spring 70 is not crushed any more. Is being done.

In addition to this, a stepped shutter is provided on the side of the jack-equivalent member 28, and the jack sensor 10 is used as two photointerrupters, and the light of any photointerrupter by any of the shutter steps of the jack-equivalent member 28 is used. The contact timing may be detected by the cutoff timing, and the contact strength may be detected by the time difference between the light cutoff timings of the photointerrupters. Also in this case, the stepped shutter and the photo interrupter are protected by the cushioning material.

In addition, a pressure sensor or the like may be used instead of the jack sensor 10 to determine the contact timing or the contact strength, and any sensor may be used. With respect to the damper sensor 8 as well, a leaf switch, an optical sensor, and other sensors such as a pressure sensor can be used to detect the sound stop timing.

In the first to fourth embodiments, the upright type electronic piano is used. However, the structure of the keyboard device and the electronic piano of the electronic musical instrument of the present invention can be similarly applied to the grand piano type. In the first to fourth embodiments, the damper equivalent member 45 is directly provided in order to obtain the sound stop timing.
However, in the case of an accessory in which the operation of the damper-equivalent member 45 is known, the operation of the accessory of the damper-equivalent member 45 is detected to detect the timing at which the sound is stopped. Is also good.

Further, in the first and third embodiments, the movement of the side surface 28b of the jack equivalent member 28 is directly detected, and in the second and fourth embodiments, the jack tail equivalent member 28a.
The movement of the jack-equivalent member 28a is detected.
Other than the above, it is possible to detect the operation of the jack-equivalent member 28 by detecting the operation of the accessory of the jack-equivalent member 28.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of an upright electronic piano according to a first embodiment.

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

FIG. 3 is a perspective view of the upright electronic piano according to the first embodiment as viewed from the back side.

FIG. 4 is a schematic vertical sectional view of the upright electronic piano according to the first embodiment.

FIG. 5 is a flowchart of a sounding process executed by the control device of the first embodiment.

6A and 6B are explanatory views of the jack sensor according to the first embodiment, FIG. 6A is a sectional view thereof, and FIG. 6B is an explanatory view of a short-circuited state of terminals.

FIG. 7 is a structural explanatory view of an action load simulation member according to the second embodiment.

FIG. 8 is a structural explanatory view of an action load simulation member according to the third embodiment.

FIG. 9 is an explanatory diagram of a configuration of an action load simulation member according to the fourth embodiment.

FIG. 10 is a configuration explanatory view of a leaf switch that can be used instead of the rubber switch of the jack sensor.

FIG. 11 is an explanatory diagram of a keyboard of a conventional example.

FIG. 12 is an explanatory diagram of a keyboard of a conventional example.

[Explanation of symbols]

2 ... Upright type electronic piano 4 ... Action load simulation member 6 ... Keyboard 8 ... Damper sensor 10 ... Jack sensor 12 ... Control device 14 ... Electronic sound source 16 ... Speaker 20 ... Capstan screw equivalent member 26 ... Wippen equivalent member 26a ... Damper Spoon 28 ... Jack equivalent member 28a ... Jack tail equivalent member 30 ... Regulating button equivalent member 31c ... Jack stopper felt equivalent member 34 ... But equivalent member 36 ... Hammer shank equivalent member 42 ... Hammer equivalent member 44 ... Hammer stopper 45 ... Damper equivalent Member 45a ... Member equivalent to damper head 45b ... Lower end portion 45d ... Damper stop rail 52 ... Input / output port 54 ... CPU

Claims (8)

[Claims] 1. A keyboard device for an electronic musical instrument, which applies a load simulating an action to a keyboard, which is swingably supported and swings as the keyboard is swung by a key depression operation. A member corresponding to a damper that is swung by the member corresponding to the wippen that is swung by a key pressing operation and rocks from a position corresponding to a noise stop to a position corresponding to a non-noise stop. The jack-corresponding member that rises as the wippen-corresponding member swings, while the jack-corresponding member rises to a predetermined position, is pushed up by the jack-corresponding member and rocks, and the jack-corresponding member rises to a predetermined position. After that, it collides with the hammer equivalent member which moves away from the jack equivalent member and inertially moves, and the tip of the inertially equivalent hammer equivalent member collides. The data corresponding to the string striking timing and the data corresponding to the string striking strength are detected from the action load simulating member having a stopper for preventing the operation of the hammer equivalent member and the jack equivalent member that moves in response to the key depression operation. A keyboard device for an electronic musical instrument, comprising: a first sensor; and a second sensor that detects a timing at which the damper-equivalent member returns to a sound stop-equivalent position. 2. The first sensor detects the timing of contact with the member corresponding to the jack that moves in response to a key depression operation as data corresponding to the string striking timing, and the strength of the contact is the string striking strength. The keyboard device for an electronic musical instrument according to claim 1, wherein the keyboard device is detected as data corresponding to a pitch. 3. The first sensor is provided on a member corresponding to a regulating button which a member corresponding to a jack tail of the member corresponding to the jack contacts when the member corresponding to the jack is raised to a predetermined position, and the member corresponding to the jack tail is provided. 3. The keyboard device for an electronic musical instrument according to claim 2, wherein the contact timing is detected as data corresponding to the string striking timing, and the strength of the contact is detected as data corresponding to the string striking strength. 4. The second sensor according to claim 2, wherein the first sensor also functions as a jack stopper felt equivalent member with which a side surface of the jack equivalent member comes into contact after the hammer equivalent member shifts to inertial motion. Electronic musical instrument keyboard device. 5. The second sensor is arranged at a position where the damper-equivalent member at the sound-equivalent position contacts, and detects the timing at which the damper-equivalent member changes from a non-contact state to a contact state. The keyboard device for an electronic musical instrument according to any one of claims 1 to 4, characterized in that: 6. The second sensor is arranged at a position in contact with the damper-corresponding member at the non-noise stop-corresponding position,
5. The timing when the member corresponding to the damper changes from a contact state to a non-contact state is detected.
A keyboard device for an electronic musical instrument according to any one of 1. 7. The keyboard device for an electronic musical instrument according to claim 6, wherein the second sensor also serves as a stopper for restricting the swing of the member corresponding to the damper. 8. A keyboard device for an electronic musical instrument according to claim 1, wherein the tone generation timing is controlled based on data corresponding to the string striking timing detected by the first sensor, and the first sensor is controlled by the first sensor. The sound intensity is controlled based on the data corresponding to the detected striking strength, and the sound stop timing is controlled based on the timing at which the damper equivalent member detected by the second sensor returns to the sound equivalent position. An electronic piano, comprising: electronic sound generation control means.