JPH09106279A - Keyboard device of electronic musical instrument, and electronic piano - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate attachment and adjustment and to obtain nearly the same touch response with an acoustic piano as well as a touch feeling as to the keyboard device of an electronic musical instrument, and the electronic piano. 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 according to the detection results. Further, a key release sensor 8 detects key release timing on a keyboard 6 and sound stop control is performed according to the detection result. 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 detection of the key release sensor 8 is the same as a sound stop of the acoustic piano, so the same touch response with the acoustic piano is obtained as to the 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 swings as the keyboard swings by a key depression operation. A member equivalent to a wippen, a jack equivalent member that is swingably attached to the member equivalent to the wippen, and that rises as the wippen equivalent member swings by a key depression operation, and a jack equivalent member while the jack equivalent member rises to a predetermined position. After the jack equivalent member rises to a predetermined position, the hammer equivalent member is moved apart from the jack equivalent member to inertially move, and the hammer is collided with the tip of the inertially equivalent hammer equivalent member. The touch feeling of the keyboard is almost the same as that of an acoustic piano because it has a stopper that blocks the operation of the corresponding members.

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 key release timing of the keyboard. 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. Particularly, 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, correspond to the position and kinetic energy during inertial motion of the hammer-equivalent member. doing.

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 depression operation.

Further, as compared with directly detecting the position and kinetic energy of the hammer-equivalent member, the kinetic energy of the jack-equivalent member after giving the kinetic energy to the hammer-equivalent member is equivalent to the hammer itself. Since it is lighter than a member and has a low motion speed, it has a low momentum. 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 number of the first sensors is smaller than that of the first sensors, the life of the first sensor can be extended. Also, the detection state becomes stable.

Further, since the second sensor detects the key release timing of the keyboard, the sound stop timing can be reliably obtained. 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 keyboard. In this way, it becomes easy to install and adjust each sensor,
The sound generation timing, sound intensity, and sound stop timing can be reliably obtained in a state equivalent to an acoustic piano, and the touch response can be almost equal to that of an acoustic piano.

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 jack-equivalent member of the jack-equivalent member comes into contact with the regulating button-equivalent member, which comes into contact with the jack-equivalent member. The timing 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 object to be detected by the second sensor may be, in place of the keyboard, a member of the action load simulating member that performs an operation that substantially corresponds to the operation of the keyboard, and that member is in the state when the key is released. Detect the timing of returning to. An example of such a member is a member equivalent to a wippen, and if the timing at which this member returns to the state when the key is released is detected, the sound stop timing is obtained in a state corresponding to an acoustic piano, similar to the case of the keyboard. be able to.

The second sensor may directly detect the state of the keyboard or the member equivalent to the wippen, but indirectly the operation of the keyboard or the member equivalent to the wippen from the operation of the member attached to the keyboard or the member equivalent to the wippen. It may be something to capture. 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. By controlling, the strength of sounding is controlled based on the data corresponding to the striking strength detected by the first sensor, and the stop timing is controlled based on the key release timing detected by the second sensor. 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. Key release sensors 8 as keys, jack sensors 10 as first sensors in the same number as the number of keyboards 6, control device 1
2, an electronic sound source 14 and a speaker 16. Among these, the action load simulation member 4, the keyboard 6, the key release sensor 8 and the jack sensor 10 are keyboard devices.

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 is provided.

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. A jack sensor 10 is provided so as to face 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. . Jack equivalent member 2
The contact position with 8 is adjusted along with the regulating button equivalent member 30 by adjusting the bending angle of the substrate 30b with respect to the regulating button equivalent member 30 or by rotating the adjusting screw 30a screwed to the regulating rail 31a. It is adjusted by moving the substrate 30b up and down. 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
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 By inertial movement away from the jack-equivalent member 28, the hammer-equivalent member 42 swings counterclockwise until it collides with a hammer stopper felt 45a as a cushioning material of the hammer stopper 45.

The jack sensor 10 is a member 3 corresponding to the bat.
The jack-equivalent member 28 comes into contact with the side surface 28b of the jack-equivalent member 28 after having separated from 4, and functions as a jack stopper felt equivalent member to stop the jack-equivalent 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.
(A). Rubber head 11 of jack sensor 10
Two plate-shaped projecting portions 11b and 11c project from the a inside the jack sensor 10 with different projecting amounts, and three terminals 11 are provided on the bottom plate 11d inside the jack sensor 10.
e, 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 is turned on. Further, when the side wall 11h is crushed, the second conductive surface 11j at the tip of the plate-shaped protruding portion 11c having the smaller protruding amount short-circuits the terminals 11f and 11g. That is, the second contact is turned on.

As a result, the control device 12 is controlled by the control of 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.

Further, as shown in FIG. 2, a shutter 50 is provided on the bottom surface of the keyboard 6. This shutter 50
Moves up and down as the keyboard 6 swings around the balance pin 18 as a fulcrum. The key-release sensor 8 provided below the keyboard 6 is a means that includes a photointerrupter and optically detects the key-release. When the shutter 50 blocks the optical path of this photointerrupter, an off-signal is emitted, and otherwise. It is configured to emit an ON signal.

Therefore, the key release sensor 8 continues to emit the OFF signal as long as the keyboard 6 is continuously pressed, and when the key is released, the OFF signal is switched 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 is connected to the key release sensor 8 and the jack sensor 10 via the input / output port 52, 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. The timing at which the switch is turned on 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, and the bottom surface inside the upright type electronic piano 2. 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 type 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-corresponding member 0 stops and stops, the tip of the hammer-corresponding member 42 collides with the hammer stopper 45, and its operation is blocked.

Next, the tone generation processing by the control device 12 when the above-mentioned 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, when an ON signal is input from the first conductive surface 11i of the jack sensor 10 to the control device 12 and then an ON signal is input from the second conductive surface 11j of the jack sensor 10 to the control device 12 within a predetermined time, It is determined that the contact of the jack equivalent member 28 has been detected, that is, the contact timing has come. This predetermined time is set to be a little longer than the time from the first conductive surface 11i on to the second conductive surface 11j on which can be taken when the key operation is normally performed.

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

On the other hand, when the ON signal of the second conductive surface 11j is detected within the predetermined time in S110, it is determined that the effective operation of the jack equivalent member 28 is detected (step S1).
10: YES), I / O port 52 or RAM 58
The first conductive surface 11 of the jack sensor 10 stored in
The timing of inputting the ON signal of i and the second conductive surface 11j
The time difference ΔT from the timing at which the ON signal of is input is calculated, and the contact strength (corresponding to the string striking strength) P is calculated from this time difference ΔT, for example, by the following formula (S120).

[0038]

(Equation 1)

Here, K is a constant. Then, based on the position of the jack sensor 10 on the range and the contact strength P,
The frequency and the amplitude are determined to obtain a predetermined waveform signal, and the electronic sound source 14 is controlled based on the waveform signal to cause the speaker 16 to generate a sound (S130).

After that, the key release sensor 8 at the same position on the range
The process waits for key release detection by (S140). That is,
When the signal of the key release sensor 8 is switched from OFF to ON, it is determined that the key release is 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 is 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 45 by the kinetic energy is the same as the state in which a hammer in an acoustic piano hits a string. 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 based on this detection, the controller 12 calculates appropriate sounding timing and sounding strength to generate sound. By controlling, it is possible to obtain the same touch response as that of the acoustic piano in the key depression operation.

Further, since the key release sensor 8 detects the timing at which the keyboard 6 is released, the control device 12 can obtain a reliable sound stop timing. If the sound stop timing is to be obtained from the contact timing with the jack-equivalent member 28 as in the case of the jack sensor 10, the jack sensor 10 and the key release sensor are provided around the jack-equivalent member 28 as described above. Since there is no space for arranging 8 and 8 and proper arrangement is extremely difficult,
Although the workability of assembling and adjusting is reduced, this does not occur because the key release sensor 8 is not arranged around the jack-equivalent member 28 in the present invention.

As described above, the jack sensor 10 detects the contact timing and the strength of contact with the jack-equivalent member 28, and the key release sensor 8 detects the timing at which the keyboard is released. , It is possible to reliably obtain the pronunciation strength and the stop timing in a state equivalent to an acoustic piano, and the touch response can be almost equal to that of an acoustic piano.

[0046] 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 5 is stopped, the timing of let-off (the jack-equivalent member 28 separates from the bat-equivalent member 34) is the same as 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.

[0047] 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.

[0048] 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. . Further, instead of directly detecting the position and kinetic energy of the hammer equivalent member 42, the hammer equivalent member 42
The position and kinetic energy of the member 28 corresponding to the jack after the kinetic energy is applied to are detected. Since the jack-equivalent member 28 itself is lighter than the hammer-equivalent member 42 and the operation speed is low, the jack-equivalent member 28 has a low momentum. Therefore, the jack sensor 1
The impact that 0 receives from the jack-equivalent member 28 is smaller than that when it is received from the hammer-equivalent member 42, so that the jack sensor 10 can have a long life. Also, the detection state becomes stable.

[Second Embodiment] In the second embodiment, as shown in FIG. 7, the jack sensor 10 is provided at the tip of a member 30 corresponding to the regulating button, and the member 30 corresponding to the regulating button has a substrate 30b. Does not exist.

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, just before the bat equivalent member 34 is separated and the hammer equivalent member 42 is inertially moved. 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, as shown in FIG. 8, instead of the key release sensor 8 in the first and second embodiments, a wippen for detecting the swinging state of the wippen equivalent member 26. A sensor 66 is provided. The other configuration is the same as that of the first embodiment, and thus detailed description thereof is omitted.

The wippen sensor 66 is made of a rubber switch similar to the jack sensor 10, but has a single plate-shaped protruding portion and a conductive surface at its tip. When the player pushes down the keyboard 6, it is pushed up by the capstan screw-corresponding member 20 and the wippen-corresponding member 26 swings counterclockwise. As a result, the side opposite to the portion pushed up by the capstan screw equivalent member 20 is lowered in response to the depression of the keyboard 6 as shown by the chain double-dashed line, crushing the wippen sensor 66. As a result, the wippen sensor 66 is turned on.

While the keyboard 6 is being pushed down, the wippen sensor 66 is crushed by the wippen equivalent member 26, and the wippen sensor 66 is on. When the keyboard 6 is returned to its original position by the player's key release operation, the wippen equivalent member 26 is also returned to its original state, and the wippen sensor 66 is also returned to its original state and turned off.

Therefore, if the time when the wippen sensor 66 is turned on is set as the key release timing,
Since the wippen sensor 66 functions exactly the same as the key release sensor 8 of the first embodiment described above, if the signal is processed in the same manner as the signal of the key release sensor 8, the first embodiment will be described.
Can produce the same effect as. Since the wippen sensor 66 has almost no repulsive force even if it is crushed, it has little effect on the touch feeling of the keyboard 6.

[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 wippen sensor 66 in the third embodiment are combined, the other configurations are the same as those in the first embodiment, and the effects are also the respective combinations, so detailed description will be omitted. .

[Others] In the first and second embodiments, an optical sensor is used as the key release sensor 8, but a rubber switch may be used as in the Wippen sensor 66 of the third and fourth embodiments. Further, in the first to fourth embodiments, the rubber switch is used as the key release sensor 8 or the wippen sensor 66.
An optical sensor may be used like the key release sensor 8 of the first and second embodiments.

Further, the position of the jack sensor 10 may be provided at a position corresponding to the position of the member corresponding to the jack stopper felt as shown by the broken lines in the first and third embodiments. That is, instead of the jack stopper felt equivalent member 31c of the second and fourth embodiments, the jack equivalent member 2
The jack sensor 10 may be provided toward the side surface 28b of the jack 8.

Further, instead of the jack sensor 10, FIG.
It is also possible to realize a so-called leaf switch with the metal spring 70 as in the case of 0. That is, the spring 70
Has two arms 72 and 74 at the tip and the terminal 7 at the base.
6 is connected in an energized state. Therefore, when the jack-equivalent member 28 pushes down the intermediate portion 70a of the spring 70, when the spring 70 is distorted by a predetermined amount, the arm 7 of the spring 70 is deformed.
The tip 72a of the longer arm 72 of the 2, 74 contacts 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 contacts the terminal 80.

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, so that the light of any photointerrupter by any one of the shutter steps of the jack-equivalent member 28 is emitted. 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.

Besides, the contact timing and the contact strength can be obtained by using a pressure sensor or the like, and any sensor may be used. Although the upright type electronic piano is used in the first to fourth embodiments, the configurations of the keyboard device of the electronic musical instrument and the electronic piano of the present invention can be similarly applied to the grand piano type.

In the first and second embodiments, the operation of the keyboard 6 is directly detected in order to obtain the key release timing. However, if an accessory that can recognize the operation of the keyboard 6 is attached to the keyboard 6. The key release timing may be detected by detecting the motion of the object.

In the third and fourth embodiments, the movement of the wippen-equivalent member 26 is directly detected.
If it is an accessory that shows the movement of the member 26 corresponding to the wippen,
The operation of the member 26 corresponding to the wippen may be detected by detecting the operation of an accessory such as the member 26a corresponding to the catcher.

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 ... Key release sensor 10 ... Jack sensor 11a ... Head 11b, 11c ... Plate-shaped protrusion 11
d ... Bottom plate 11e, 11f, 11g ... Terminal 11h ... Side wall 11i, 11j ... Conductive surface 11k, 11m, 11n ...
Signal line 12 ... Control device 14 ... Electronic sound source 16 ... Speaker 22 ... Wippen flange equivalent member 26 ... Wippen equivalent member 28 ... Jack equivalent member 28a ... Jack tail equivalent member 28b ... Side surface 30 ... Regulating button equivalent member 31 ... Regulating Bracket 31a ... Regulating rail 31b ... Guide 31c ... Jack stopper felt equivalent member 32a ... Bat flange equivalent member 34 ... Bat equivalent member 36 ... Hammer shank equivalent member 42 ... Hammer equivalent member 45 ... Hammer stopper 45a ... Hammer stopper felt 50 ... Shutter 52 ... I / O port 54 ... CP
U 66 ... Wippen sensor 70 ... Spring 72, 74
... Arms 72a, 74a ... Tips 76, 78, 80 ... Terminals
82 ... cushioning material

Claims (7)

[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 jack-corresponding member that is swingably attached to the wippen-corresponding member and that rises as the wippen-corresponding member swings by a key pressing operation, and is pushed up by the jack-corresponding member while the jack-corresponding member rises to a predetermined position. Rocks,
After the jack-equivalent member moves up to a predetermined position, the hammer-equivalent member moves apart from the jack-equivalent member and inertially moves,
And an action load simulation member having a stopper that collides with the tip of the hammer-equivalent member that is inertially moving to prevent the hammer-equivalent member from moving, and from the jack-equivalent member that moves in response to a key depression operation to the string striking timing. A keyboard device for an electronic musical instrument, comprising: a first sensor for detecting corresponding data and data corresponding to string striking strength; and a second sensor for detecting key release timing of the keyboard. 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. A key is released when a second sensor, instead of the keyboard, returns a member in the action load simulating member that performs an operation substantially corresponding to the operation of the keyboard to the state when the key is released. The keyboard device for an electronic musical instrument according to any one of claims 1 to 4, wherein the keyboard device detects the timing. 6. The keyboard device for an electronic musical instrument according to claim 5, wherein the second sensor detects, as a key release timing, a timing at which the wippen-equivalent member returns to the state when the key is released. 7. A keyboard device for an electronic musical instrument according to claim 1, wherein a tone generation timing is controlled based on data corresponding to a string striking timing detected by the first sensor, and the first sensor is controlled by the first sensor. Electronic sound generation control means for controlling the strength of sound generation based on the data corresponding to the detected striking strength, and controlling the stop sound timing based on the key release timing detected by the second sensor, An electronic piano characterized by having it.