JPH09190184A - Dummy action for electronic keyboard instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the dummy action of the electronic keyboard instrument whose let-off timing can easily be adjusted. SOLUTION: When a keyboard 11 is depressed, a jack 17 rotates thrusting up a butt 18 as a wippen rotates. Then when a jack tail 17 rotates large and strikes on a regulating button 16, the jack 17 rotates large to come out of the butt 18 (let-off). Here, the angle α by which a curl part 21 rotates from its stationary position to the position where it abuts against a hammer stop part 31 is equal to the angle β by which a catcher member 19 rotates from its stationary position to the position where it abuts against a catcher stop part 33. Consequently, the interval between the curl part 21 and hammer stop part 31 can be adjusted by adjusting the interval between the catcher member 19 and catcher stop part 33 at the let-off time by rotating the screw 42 of the regulating button 16, and consequently the let-off timing can easily be adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pseudo action for applying a load simulating an action to a keyboard in an electronic keyboard instrument such as an electronic piano.

[0002]

2. Description of the Related Art Generally, the action shown in FIG. 6 is known as an action of an acoustic upright piano. That is, in this action, when the player presses the keyboard 111, the wippen 115 moves upward while rotating in the direction opposite to the direction of rotation of the keyboard 111 (counterclockwise in the figure), and rotates to the wippen 115. Jack 117 possible mounted
Rises as the Wippen 115 rises and the bat 118 rises
The butt 118 pushed up is turned toward the string together with the hammer assembly 120 (a set of a hammer shank 121, a hammer wood 123 and a hammer felt 122, the same applies hereinafter). Here, the jack 117 is rotated while rising to a predetermined position, and after the jack tail 117a is brought into contact with the regulating button 116, the jack 117 is largely rotated around the contact point as a fulcrum, and the bat 118 is rotated.
Get out of. Therefore, the bat 118 and the hammer assembly 120 continue to rotate due to the inertial movement, and strike a string.

As described above, in the acoustic upright piano, the wippen 115, the jack 117, and the bat 118 have different axes and rotate about the respective axes, and the jack 117 is separated from the bat 118 at a predetermined timing. Therefore, the touch feeling of the keyboard 111 at that time becomes complicated.

On the other hand, among electronic keyboard musical instruments such as an electronic piano, there are known electronic keyboard musical instruments provided with various pseudo-actions so as to bring the touch feeling of the keyboard closer to that of an acoustic upright piano (Japanese Patent Laid-Open No. 4-347895). Gazette). For example, as shown in FIG. 7, one having a hammer arm P14 that is rotatable about an axis P10 and presses the rear end of the key P12 from above is known. However, in such a pseudo action, since the weight rotates about one axis, there is a problem in that the touch feeling is monotonous as compared with the touch feeling of the keyboard of the acoustic piano.

In view of this point, development of a pseudo action as shown in FIG. 8 has been studied. That is, this pseudo-action is the hammer assembly 120 of the acoustic piano.
Instead, a short L-shaped member 220 is used, a stopper portion 231 is used instead of the strings, and a hammer rail portion 232 is used instead of the hammer rail. The stopper portion 231 and the hammer rail portion 232 are both provided on the stop rail 230. In the pseudo action of FIG.
When the key is pressed, it operates similarly to the action of the acoustic piano described above, the jack 117 separates from the bat 118, the bat 118 inertially moves together with the L-shaped member 220, and then the L-shaped member 220 collides with the stopper portion 231. It swings back and returns to the original position again at the hammer rail 232.
Stand still while leaning. According to such a pseudo action, since the L-shaped member 220 is short, the touch feeling of the keyboard can be made equal to that of the acoustic piano while maintaining the compact appearance shape of a normal electronic piano.

By the way, in an ordinary acoustic piano as shown in FIG. 6, in order to adjust the timing at which the jack 117 pushes up the bat 118 and separates from the bat 118 (hereinafter referred to as "let-off timing"),
The height of the regulating button 116 is adjusted so that the jack 117 may come out of the bat 118 at a position where the distance between the hammer felt 122 and the strings becomes a predetermined value (for example, several mm).

In this regard, in the pseudo-action of FIG. 8, when trying to adjust the let-off timing, L
Although it is necessary to measure the distance between the L-shaped member 220 and the stopper portion 231, it is not easy to measure the distance because the stop rail 230 is provided so as to cover the L-shaped member 220. Therefore, the let-off timing cannot be easily adjusted.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a pseudo action of an electronic keyboard instrument in which the let-off timing can be easily adjusted.

[0009]

Means for Solving the Problems and Effects of the Invention In order to solve the above-mentioned problems, the invention according to claim 1 uses a key pressing operation in a pseudo action of an electronic keyboard musical instrument that applies a load simulating an action to the keyboard. A jack that rotates while rising as the keyboard rotates, and a jack that is pushed up by the jack and rotates while the jack rises to a predetermined position, and after the jack rises to a predetermined position, A bat having a hammer portion and a catcher portion which are separated from each other for inertial movement, a hammer stopper which abuts a hammer portion of the bat which is inertially moved to prevent the movement of the bat, and is inertially moved. A catcher stopper that comes into contact with a catcher portion of the bat to prevent the bat from moving, the catcher portion extending from the bat to the front of the electronic keyboard instrument. The rotation angle when the catcher portion is rotated from the stationary position to the position hitting the catcher stopper is equal to the rotation angle when the hammer portion is rotated from the stationary position to the position hitting the hammer stopper. It is characterized by doing.

In the pseudo-action according to the first aspect of the invention, when the player presses a key, the keyboard is rotated, and the jack is also rotated while being raised. Then, while the jack is raised to a predetermined position, the bat is pushed up by the jack and rotated,
After the jack is raised to a predetermined position, the bat moves apart from the jack and inertially moves. The predetermined position at this time is the position at which the jack tail of the jack comes into contact with the regulating button and then pivots around the contact point as a fulcrum to come out of the bat, as in a typical acoustic upright piano. is there. After that, in the bat that is inertially moving, the hammer portion collides with the hammer stopper, and at the same time, the catcher portion collides with the catcher stopper. Here, the hammer part and the catcher part collide at the same time,
This is because the rotation angle at which the catcher portion rotates from the stationary position to the position hitting the catcher stopper is equal to the rotation angle at which the hammer portion rotates from the stationary position to the position hitting the hammer stopper.

According to the first aspect of the present invention, the positional relationship between the hammer felt and the strings in the acoustic piano corresponds to the positional relationship between the hammer portion and the hammer stopper, and the positional relationship between the catcher portion and the catcher stopper. Is. Therefore, if the let-off timing in the acoustic piano is the time when the distance between the hammer felt and the strings becomes a predetermined distance (for example, p (mm)), the let-off timing in the pseudo action according to claim 1 is the hammer portion. It may be set to a time point when the hammer stopper reaches a distance (for example, p ′ (mm)) according to the predetermined distance. At this time, when it is difficult to measure the positional relationship between the hammer portion and the hammer stopper, it may be set to a time when the distance between the catcher portion and the catcher stopper reaches a distance (for example, p ″ (mm)) corresponding to the predetermined distance. .here,
Since the catcher portion is formed so as to project to the front side of the electronic keyboard instrument like the catcher of a normal acoustic piano, the positional relationship between the catcher portion and the catcher stopper can be easily measured. As described above, according to the pseudo-action according to the first aspect, the effect that the let-off timing can be easily adjusted is obtained.

The invention according to claim 2 is the pseudo-action according to claim 1, further comprising a rail member that extends in the arrangement direction of the keyboard and is provided so as to cover the hammer portion of the bat. Is provided with the hammer stopper, and a hammer rail portion that comes into contact with the hammer portion of the bat in the stationary position is provided on the side opposite to the position where the hammer stopper is provided with the center of rotation of the bat sandwiched therebetween. It is characterized by being

In the pseudo action according to the second aspect, since the hammer stopper and the hammer rail portion are provided on the rail member, it is not necessary to separately provide a hammer rail, and the structure can be simplified. Further, since the rail member is provided so as to cover the hammer portion (for example, the cross section has a substantially ∩ shape), it is very difficult to measure the distance between the hammer portion and the hammer stopper. Therefore, the let-off timing is adjusted by measuring the positional relationship between the catcher portion and the catcher stopper. That is, in claim 2, it is highly necessary to adjust the let-off timing depending on the positional relationship between the catcher portion and the catcher stopper.

The invention according to claim 3 is the pseudo-action according to claim 2, characterized in that the rail member is provided with the catcher stopper. In the simulated action according to the third aspect, not only the hammer stopper and the hammer rail portion but also the catcher stopper are provided on the rail member, so that it is not necessary to separately provide a catcher stopper, and the structure can be further simplified.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. Note that the embodiment of the present invention
It is needless to say that the present invention is not limited to the following embodiments, and can take various forms within the technical scope of the present invention.

FIG. 1 is a schematic block diagram of an electronic piano, FIG.
Is a front view of the electronic piano, FIG. 3 is a sectional view taken along line AA of FIG. 2, FIG. 4 is an explanatory view of a back stop position of the pseudo action, and FIG. 5 is a perspective view of a hammer member. The electronic piano 1 of the present embodiment includes a keyboard 11, a control device 10, an electronic sound source 5, and a pseudo action 2.

A plurality of keyboards 11 are arranged along the shelf board 46 as shown in FIG. The keyboard 11 is swingably supported by the balance pin 27 as shown in FIG. 3, and key sensors 63 and 65 are provided below the keyboard 11. The key sensors 63 and 65 are detection means (photointerrupters) for detecting key depression / key release, and each of them comprises a light emitting element and a light receiving element as a set. Each key sensor 6
An optical path runs between the light emitting element and the light receiving element of Nos. 3 and 65, and is configured to emit an ON signal when the optical path is blocked. The optical paths of the key sensors 63 and 65 are blocked by a stepped shutter 61 provided on the bottom surface of the keyboard 11.
It is conducted. That is, when the keyboard 11 is pressed, the optical path of the key sensor 63 is blocked by the stepped shutter 61 and emits an ON signal. After a certain time difference, the optical path of the key sensor 65 is blocked by the stepped shutter 61 and emits an ON signal. Of. These key sensors 63, 6
As shown in FIG. 1, 5 is connected to the control device 10.

The control device 10 includes a control box 5
c (see FIG. 2), and as shown in FIG.
Input / output port 71, well-known CPU 72, ROM 73, R
It is configured as a logical operation circuit including an AM 74, a backup RAM 75, a clock 76, etc., and these are connected to each other by a bus 77. The control device 10 is connected to the key sensors 63 and 65 via the input / output port 71, and is also connected to the electronic sound source 5 via the input / output port 71. The CPU 72 obtains the time and the time difference for shutting off the optical paths of the key sensors 63 and 65 based on the ON / OFF signal, temporarily stores these in the RAM 74, and RO
A signal is output to the electronic sound source 5 based on the control program stored in M73. A pedal sensor (not shown) that detects the operation of a pedal mechanism such as a damper pedal or a soft pedal is also connected to the control device 10, and a signal is output to the electronic sound source 5 in consideration of this detection information. Is.

As shown in FIG. 2, the electronic sound source 5 is fixed to the inner bottom surface of the piano. A control box 5c having a power switch 5a for the electronic sound source 5 and a volume knob 5b is fixed to the lower surface of the shelf board 46. This control box 5c has a headphone jack 5
d is provided, and by inserting a headphone plug into the headphone jack 5d, the outputs from the speakers 6a and 6b are stopped and the output is made to the headphones. Speakers 6a for the middle and high-pitched sound parts are provided on the left and right sides of the upper front plate 47, and are protected by the upper net 7. On the other hand, the bass speaker 6b is provided on the left and right sides above the lower front plate 48, and is protected by the lower net 8.

The pseudo action 2, which is a feature of the present invention, is
It is arranged on the back side of the keyboard 11, and includes a wippen 15, a jack 17, a bat 18, and a stop rail 30, as shown in FIG. The wippen 15 is rotatably supported by a center rail 14 provided on the musical instrument body via a wippen flange 13, and the capstan screw 12 is lifted to reverse the direction of rotation of the keyboard 11, that is, in FIG. Rotate counterclockwise. A back check 43 is supported on the wippen 15 by a support wire 44.

The jack 17 is rotatably connected to the wippen 15 and ascends together with the wippen 15 until the jack tail 17 a comes into contact with the regulating button 16. The regulating button 16 is fixed to the regulating rail 41 with a screw 42, and the height can be adjusted by turning the screw 42.

The butt 18 abuts and separates from the jack 17, and is rotatably supported by the center pin 18b of the bat flange 18a fixed to the center rail 14. The hammer member 2 is provided on the butt 18.
0 (hammer portion of the present invention) is screwed. As shown in FIG. 5, the hammer member 20 is formed by pressing a metal plate to form a curl portion 21 having a curl shape and a rest portion 22 folded back at an acute angle.
3 (only one of which is shown in FIG. 5) is inserted into the screw hole 24 while the butt 18 is sandwiched by the screw 25.
Is screwed on. Therefore, the hammer member 20 is the bat 1
There is no deviation from 8. Further, the height of the hammer member 20 is considerably lower than that of the normal hammer assembly 120 (see FIG. 6) (for example, about 1/2 to 1/20). A catcher member 19 (the catcher portion of the present invention) is fixed to a side portion of the bat 18 so as to project toward the front side (rightward in the drawing) of the electronic piano 1.

The stop rail 30 extends in the arrangement direction of the keyboard 11 and covers the hammer member 20 of the bat 18. The stop rail 30 includes a hammer stopper portion 31, a hammer rail portion 32, and a catcher stopper portion 33.

The hammer stopper portion 31 can come into contact with the curl portion 21 of the hammer member 20 which is swung by the key depression (see the one-dot chain line in FIG. 3), and the hammer rail portion 32 rocks to the rest position after the key depression. Rest part 2 of returned hammer member 20
2 can be contacted (see the solid line in FIG. 3). The hammer stopper portion 31 and the hammer rail portion 32 are formed by attaching a cushioning material (for example, felt or urethane rubber) to the surfaces of the stop rail 30 that face each other with the center pin 18b interposed therebetween. On the other hand, the catcher stopper portion 33 is the catcher member 1 that is swung by pressing the key.
It is formed by sticking a cushioning material (for example, felt or urethane rubber) at a position where it can abut against 9.

The rotation angle β when the catcher member 19 provided on the butt 18 is rotated from the stationary position to the position where it comes into contact with the catcher stopper portion 33, the curl portion 21 of the hammer member 20 contacts the hammer stopper portion 31 from the stationary position. It is designed to be equal to the rotation angle α when rotated to the contact position.

Here, the adjustment of the let-off timing and the backstop timing will be described. Keyboard 11
When is pressed, the wippen 15 rotates in the direction opposite to the keyboard 11 (counterclockwise in FIG. 3), and the jack 1 accordingly.
7 rotates clockwise while rising so as to push up the bat 18. Then Jack 17's Jacktail 1
When the 7a hits the regulating button 16, the jack 17 will move to the jack tail 17a and the regulating button 1
With the point of contact with 6 as a fulcrum, it pivots largely clockwise and comes out of the bat 18. This jack 17 is a bat 18
The timing for exiting is let-off timing.
Therefore, the let-off timing can be adjusted by adjusting the height of the regulating button 16 with the screw 42. After the let-off, the bat 18 has the hammer member 20.
3 and the catcher member 19 continue to rotate counterclockwise in FIG. 3 due to inertial movement. Then, the curl portion 21 of the hammer member 20 that is performing this inertial movement collides with the hammer stopper portion 31 of the stop rail 30, and at the same time, the catcher member 19 also collides with the catcher stopper portion 33 of the stop rail 30. This prevents the bat 18 from inertial movement and rocks in the opposite direction, clockwise. Since the impact force due to this collision is dispersed at two locations (the hammer stopper portion 31 and the catcher stopper portion 33), the stability and durability of the entire rotary system are improved. Then, when the butt 18 swings back together with the hammer member 20 and the catcher member 19, if the finger is separated from the keyboard 11, the rest portion 22 of the hammer member 20 will have the rest portion 22 of the stop rail 30.
It abuts 2 and stands still. On the other hand, when the bat 18 swings back together with the hammer member 20 and the catcher member 19, if the keyboard 11 is still pressed down, as shown in FIG.
As shown in FIG. 5, the catcher member 19 is received by the back check 43 at the back stop position before the rest portion 22 of the hammer member 20 abuts the hammer rail portion 32 of the stop rail 30. The timing when the catcher member 19 is received by the back check 43 is the back stop timing. Therefore, by bending the support wire 44 of the back check 43, the back stop timing can be adjusted.

Next, the adjustment of the let-off timing will be specifically described. For example, in the acoustic piano of FIG. 6, in order to adjust the let-off timing at which the jack 117 pushes up the bat 118 and then separates from the bat 118, the distance between the hammer felt 122 and the strings becomes a predetermined value p (mm). Adjust the height of the regulating button 116 so that the jack 117 is separated from the bat 118 at the position. If the touch feeling of the acoustic piano is matched with the touch feeling of the electronic piano 1 of the present embodiment, first, the interval between the curl portion 21 of the hammer member 20 and the hammer stopper portion 31 at the let-off timing is p (mm) above. Calculate based on. This value is p '(mm). Here, the rotation angle α when the curl portion 21 of the hammer member 20 rotates from the stationary position to the position where the curl portion 21 contacts the hammer stopper portion 31, and the catcher member 1
Since the rotation angles β when rotating 9 from the stationary position to the position where the catcher stopper portion 33 contacts the catcher stopper portion 33 are equal, the distance between the catcher member 19 and the catcher stopper portion 33 at the let-off timing is calculated based on the above p ′ (mm). can do. This value is defined as p ″ (mm). That is, the screw 42 of the regulating button 16 is turned to rotate the catcher member 19 at the let-off timing.
The let-off timing becomes the same as that of the original acoustic piano by adjusting the distance between the catcher stopper portion 33 and the catcher stopper portion 33 to be p ″ (mm).

Next, the adjustment of the backstop timing will be specifically described. For example, in the acoustic piano of FIG. 6, in order to adjust the backstop timing at which the back check 43 receives the catcher member 19 when the hammer felt 122 continues to be depressed after striking the string, the hammer felt 122 and the string are adjusted. The support wire 44 of the back check 43 is bent and adjusted so that the back check 43 receives the catcher member 19 at a position where the interval is a predetermined value q (mm). Assuming that the touch feeling of the acoustic piano is matched with the touch feeling of the electronic piano 1 of the present embodiment, first, the curl portion 21 of the hammer member 20 at the back stop timing.
And the distance between the hammer stopper portion 31 and the hammer stopper portion 31 are calculated based on the above q (mm). This value is defined as q '(mm). Here, when the curl portion 21 of the hammer member 20 rotates from the stationary position to the position where it comes into contact with the hammer stopper portion 31, and when the catcher member 19 rotates from the stationary position to the position where it comes into contact with the catcher stopper portion 33, Since the rotation angles β are equal, the distance between the catcher member 19 and the catcher stopper portion 33 at the back stop timing can be calculated based on the above q ′ (mm). This value is set to q ″ (mm). That is, the support wire 44 of the back check 43 is bent to adjust the distance between the catcher member 19 and the catcher stopper portion 33 at the back stop timing to be q ″ (mm). For example, the backstop timing will be the same as the original acoustic piano.

In the pseudo action 2, since the hammer member 20 is covered by the stop rail 30, it is not easy to measure the distance between the curl portion 21 and the hammer stopper portion 31. However, since the catcher member 19 is provided so as to project from the bat 18 toward the front side of the electronic piano 1 and is not covered by the stop rail 30, the distance between the catcher member 19 and the catcher stopper portion 33 cannot be measured. It's easy. Therefore, in this embodiment, it is possible to easily adjust the let-off timing and the backstop timing.

Further, in the pseudo action 2, since the hammer stopper portion 31, the hammer rail portion 32 and the catcher stopper portion 33 are all provided on the stop rail 30, the structure is simpler than the case where they are provided separately. be able to. [Modification of the above embodiment] In the above embodiment, the hammer member 20 is used.
5 has the shape shown in FIG. 5, but it may have a substantially concave shape or a substantially L shape, or a shape simulating a hammer assembly 120 (see FIG. 6) of a normal acoustic piano. May be Alternatively, the hammer assembly 120 may be used as it is or may be used after being reduced.

Further, in the above embodiment, the regulating button 16 has the screw 4 for each jack 17 of the pseudo action 2.
Although it was provided so that it could be adjusted by 2, the regulation button 16 is replaced by one regulation felt that extends in the arrangement direction of the keyboard 11 to adjust the let-off timing of all jacks 17 of the pseudo action 2. You may do it. In this case, since the let-off timing can be adjusted at once, the adjustment work is simple, and the number of parts is small, so that the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of an electronic piano.

FIG. 2 is a front view of an electronic piano.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is an explanatory diagram of a back stop position of a pseudo action.

FIG. 5 is a perspective view of a hammer member.

FIG. 6 is an explanatory diagram of an action of a normal acoustic upright piano.

FIG. 7 is an explanatory diagram of a conventional pseudo action.

FIG. 8 is an explanatory diagram of an improved pseudo action.

[Explanation of symbols]

1 ... Electronic piano, 2 ... Pseudo action, 5 ... Electronic sound source, 10 ... Control device, 11 ... Keyboard, 15 ...
Wippen, 16 ... Regulating button, 17.
.... Jack, 17a ... Jack tail, 18
... Bat, 18b ... Center pin, 19
... Catcher member, 20 ... Hammer member,
21 ... Curl portion, 22 ... Rest portion,
30 ... Stop rail, 31 ... Hammer stopper part, 32 ... Hammer rail part, 33 ...
Catcher stopper part, 42 ... screw, 43 ... back check, 44 ... support wire, 61 ...
.Stepped shutters, 63, 65 ... Key sensor,

Claims (3)

[Claims] 1. In a pseudo-action of an electronic keyboard musical instrument that applies a load simulating an action to a keyboard, a jack that rises and rotates as the keyboard is rotated by a key pressing operation, and the jack reaches a predetermined position. While rising, the jack is pushed up and rotated by the jack, and after the jack rises to a predetermined position, the bat provided with a hammer part and a catcher part that moves apart from the jack and inertially moves. A hammer stopper that abuts a hammer portion of the bat to prevent movement of the bat, and a catcher stopper that abuts a catcher portion of the bat that is inertially moving to prevent movement of the bat, The catcher part is provided so as to project from the bat toward the front side of the electronic keyboard instrument, and the catcher part is provided from the stationary position to the catcher part. Position rotation angle when rotated to hit the stopper is pseudo action, characterized in that the hammer portion coincides with the rotation angle when rotated from a rest position to a position corresponding to the hammer stopper. 2. A rail member extending in the keyboard arrangement direction and provided so as to cover a hammer portion of the bat, wherein the rail member is provided with the hammer stopper and sandwiches a rotation center of the bat. 2. The pseudo-action according to claim 1, wherein a hammer rail portion that comes into contact with the hammer portion of the bat in the stationary position is provided on the side opposite to the position where the hammer stopper is provided. 3. The pseudo action according to claim 2, wherein the rail member includes the catcher stopper.