JPH1091148A - Keyboard device of electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To greatly improve touch feel by suppressing plural key resetting means for imparting resetting force to keys from affecting each other, thereby making it possible to independently obtain the touch feel based on the respective key resetting means. SOLUTION: This keyboard device has a hammer 18 and a spring 20 as the key resetting means for imparting the resetting force to reset the key 10 to its initial position. When a shaft member 36 is positioned to the spring 20 side by an annular key touch force transmitting member 34 turning around the movable shaft member 36 as a turning fulcrum, the key touch force is transmitted to the shaft 18 to suppress the transmission of the key touch force to the spring 20. When the shaft member 36 is positioned to the hammer 18 side, the key touch force is transmitted to the spring 20 and the transmission of the key touch force to the hammer 18 is suppressed.

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 more particularly, to a keyboard device for an electronic musical instrument capable of changing a touch feeling when a key is pressed.

[0002]

2. Description of the Related Art Conventionally, various types of keyboard devices for electronic musical instruments have been proposed. As keyboard devices for electronic musical instruments capable of varying a touch feeling when a key is depressed, for example, A configuration disclosed in Japanese Patent Application Laid-Open No. H8-30260 is known.

In the keyboard device of an electronic musical instrument disclosed in Japanese Patent Application Laid-Open No. 8-30260, when a key which is normally stopped at an initial position is depressed, a return force for returning the key to an initial position ( As a key return means for applying a reaction force to a key press, a weight (hammer) that applies a return force by rotating with the key press and a spring that always applies a constant return force to the key. The touch position is changed by moving the installation position of the hammer to change the initial contact position between the hammer and the key.

That is, if the initial position of contact between the hammer and the key is set by moving the setting position of the hammer so that the pivoting distance of the hammer due to the key depression becomes large, the influence of the hammer increases and a heavy touch feeling is produced. (In this case, the restoring force of the spring is also applied.)
On the other hand, when the initial position of contact between the hammer and the key is set by moving the installation position of the hammer so that the pivoting distance of the hammer due to key depression is reduced, the influence of the hammer is reduced and a light touch feeling is obtained ( In this case, also in this case, the return force by the spring is applied together.) When the hammer is moved to a position where the key and the hammer do not come into contact with each other even when the key is pressed, only the spring returning force is applied to the key, so that the lightest touch is obtained.

[0005] However, Japanese Patent Application Laid-Open No. Hei 8-302
According to the configuration of the keyboard device for an electronic musical instrument disclosed in Japanese Patent Application Publication No. 60-260, the return force of the spring by pressing the key is constant regardless of where the hammer is moved, and this constant return force is always applied to the key. Will be granted. Here, the reason why the hammer is rotated by pressing the key and the restoring force of the hammer is given to the key is to obtain a touch feeling simulating an acoustic piano, but the constant restoring force by the spring is constantly applied. When the key is provided to the key, there is a problem that the touch feeling simulating an acoustic piano is impaired by the influence of a constant return force by a spring.

On the other hand, if the spring constant of the spring is reduced to reduce the effect of the spring, when the hammer is moved to a position where the key does not come into contact with the hammer even if the key is pressed, There was a problem that the touch feeling became too light, which hindered the performance.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned various problems of the prior art, and a purpose thereof is to provide a plurality of keys for providing a key with a return force. A keyboard for an electronic musical instrument in which key return means are prevented from affecting each other, so that touch sensations based on the respective key return means can be obtained independently of each other, and touch sensation is significantly improved. It is to provide a device.

[0008]

In order to achieve the above object, a keyboard device for an electronic musical instrument according to the present invention according to the first aspect of the present invention is normally stationary at an initial position, and is operated at a predetermined position by pressing a key. A key which is swingable in an area, and a first key which gives a return force having different characteristics for returning the key to an initial position in the predetermined area when the key is pressed. Recovery means and second key recovery means, a selection means for selecting one of the first key recovery means and the second key recovery means, and a key recovery means other than the key recovery means selected by the selection means Suppressing means for suppressing the return force of the key returning means.

Here, the first key recovery means and the second key recovery means
The key restoring means may be configured so that, for example, the static load when the key starts swinging by a key pressing operation is substantially the same as in the invention described in claim 2.

[0010] Further, the above-mentioned claim 1 or claim 2
In addition to the configuration of the invention described in the above, the first key return means and the second key return means are, for example, statically generated by the position of the key as in the invention of the third aspect. You may comprise so that loads may differ.

Further, the above-mentioned claim 1 and claim 2
Alternatively, in addition to the configuration of the invention described in claim 3, the first
The key return means and the second key return means may be configured such that, for example, the moment of inertia generated according to the acceleration of the key pressing operation is different as in the invention according to claim 4.

In the keyboard device for an electronic musical instrument according to the present invention, the invention described in claim 5 is preferably a plurality of keyboard devices which are stationary at an initial position in a normal state and are arranged so as to be swingable within a predetermined area by a key-pressing operation. A key, a projecting member projecting below the key, and transmitting a key pressing force associated with a key pressing operation of the key; and a projecting member located below the key and extending in the arrangement direction of the key, and A shaft member movably disposed between a first position and a second position located in a direction orthogonal to the key arrangement direction, and the projecting member abuts when the key is pressed. A key pressing force associated with the key pressing operation is transmitted, the key is rotated about the shaft member as a fulcrum, and the shaft member is disposed at one of the first position and the second position. Key pressing force transmission part that switches the rotation fulcrum according to And a restoring force for returning the key to the initial position when the key pressing force is transmitted by the rotation of the key pressing force transmitting member. A first key return member and a second key return member having different force characteristics, wherein the key pressing force transmitting member is configured to press a key when the shaft member is disposed at the first position. The key force is transmitted to the first key return member, and the key pressing force is suppressed from being transmitted to the second key return member. The shaft member is disposed at the second position. Sometimes, the key pressing force is transmitted to the second key return member, and the key pressing force is suppressed from being transmitted to the first key return member.

Further, the keyboard device of the electronic musical instrument according to the present invention may be configured as shown below.

That is, the keyboard device of the electronic musical instrument according to the present invention is normally stationary at the initial position, and is provided with a key which can be swung within a predetermined area by a key-pressing operation and a key-pressing operation of the key. First key restoring means for applying a restoring force for returning the key to the initial position by a force acting in accordance with the position of the key in the predetermined area; and A second key return means for applying a return force for returning the key to the initial position by a force acting in response to an acceleration applied to the key by the key pressing operation; and a first key return means. Selecting means for selecting one of the key restoring means and the second key restoring means, and suppressing means for suppressing the restoring force of key restoring means other than the key restoring means selected by the selecting means. You may.

Here, the force acting in accordance with the position of the key in the predetermined area is a static load acting when the key is slowly depressed, and according to the acceleration applied to the key by the depressing operation. The acting force is a force generated by the moment of inertia, that is, a response.

Further, the keyboard device for an electronic musical instrument according to the present invention has a key which is normally stopped at an initial position and which can be swung within a predetermined area by a key-pressing operation, and First key return means for applying a return force for returning the key to the initial position by a mass body, and when the key is pressed, the key is returned to the initial position by an elastic body. Second key return means for applying a return force, selection means for selecting one of the first key return means and the second key return means, and key return means selected by the selection means It may be configured to include a suppression unit that suppresses the return force of the key return unit other than the above.

Here, the mass body is, for example, a weight such as a hammer, and the elastic body has a biasing force in a predetermined direction, such as a spring.

The first key recovery means and the second key recovery means
The key return means may be configured so that the load when the key starts swinging by the key pressing operation becomes substantially the same.

A keyboard device for an electronic musical instrument according to the present invention is normally stationary at an initial position, and includes a plurality of keys arranged so as to be swingable within a predetermined area by a key-pressing operation, and protruding below the keys. A projecting member that is formed and transmits a key pressing force associated with the key pressing operation of the key; and a member that is located below the key and extends in the key arrangement direction, and extends in a direction orthogonal to the key arrangement direction. A shaft member movably disposed between a first position and a second position where the key member is pressed, and the projecting member comes into contact with the key member when the key is pressed; And the key is rotated about the shaft member as a fulcrum, and switches the rotation fulcrum depending on whether the shaft member is disposed at the first position or the second position. A force transmitting member, and the key pressing force transmitting member When the key pressing force is transmitted by the rotation of the key pressing force transmitting member, the key pressing force transmitting member abuts on the hammer member that provides a restoring force for returning the key to the initial position, A spring member for applying a return force for returning the key to the initial position when the key pressing force is transmitted by the rotation of the key pressing force transmitting member; When the shaft member is disposed at the first position, the key pressing force is transmitted to the hammer member, and the key pressing force is suppressed from being transmitted to the spring member. When arranged at the second position, the key pressing force may be transmitted to the spring member, and the key pressing force may be prevented from being transmitted to the hammer member.

Here, the shaft member is moved to the first position and the second position, for example, by connecting a solenoid to both ends of the shaft member and driving the solenoid to move the shaft member to the above-mentioned position. It may be performed by moving in a direction orthogonal to the key arrangement direction. That is, one solenoid may be provided at each end of the shaft member, and each of the solenoids may be driven to move the shaft member to the first position and the second position.

The drive of the shaft member is not limited to the solenoid, and another drive device such as a motor may be used, or may be performed manually.

The restoring force of the hammer member and the restoring force of the spring member may have different moments of inertia so that the static load is the same.

Further, the hammer member and the spring member may be configured so that the load when the key starts to swing by the key pressing force becomes substantially the same.

The keyboard device for an electronic musical instrument according to the present invention is normally stationary at an initial position, and includes a plurality of keys arranged so as to be swingable within a predetermined area by a key-pressing operation, and protruding below the keys. A projecting member that is formed and transmits a key pressing force associated with the key pressing operation of the key; and a member that is located below the key and extends in the key arrangement direction, and extends in a direction orthogonal to the key arrangement direction. A shaft member movably disposed between a first position and a second position where the key member is pressed, and the projecting member comes into contact with the key member when the key is pressed; And the key is rotated about the shaft member as a fulcrum, and switches the rotation fulcrum depending on whether the shaft member is disposed at the first position or the second position. A force transmitting member, and the key pressing force transmitting member A first hammer member for applying a first restoring force for returning the key to the initial position when the key pressing force is transmitted by rotation of the key pressing force transmitting member; A second restoring force for restoring the key to the initial position when the key pressing force is transmitted by the rotation of the key pressing force transmitting member in contact with the transmitting member;
The key pressing force transmitting member transmits the key pressing force to the first hammer member when the shaft member is disposed at the first position. A key force is suppressed from being transmitted to the second hammer member, and a key pressing force is transmitted to the second hammer member when the shaft member is disposed at the second position. The key pressing force may be configured to be suppressed from being transmitted to the first hammer member.

[0025] The first hammer member and the second hammer member may be configured so that the load when the key starts to swing by a key pressing force is substantially the same.

Further, the key pressing force transmitting member comprises a member having a space extending in a direction perpendicular to the arrangement direction of the keys, and the shaft member is slidably disposed in the space. You may.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a keyboard device for an electronic musical instrument according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a partial view showing an arrangement of keys in an example of an embodiment of a keyboard device for an electronic musical instrument according to the present invention, in which each component is shown with different types of hatching for easy understanding. 2 is a side view taken along arrow A in FIG. 1, FIG. 3 is a side sectional view taken along line III-III in FIG. 1, and FIG. FIG. 4 is an enlarged view of a main part of FIG. 3, showing each component with different types of hatching.

In the drawing, reference numeral 10 denotes a key composed of a white key and a black key in a keyboard instrument such as an electronic musical instrument, reference numeral 12 denotes a keyboard chassis made of a steel plate, and reference numeral 14 denotes a key rotating the key 10 on a key bearing portion. Reference numeral 16 denotes a key pressing force transmission mechanism which will be described in detail later.
Reference numeral 20 denotes a hammer swingably locked in a U-shaped groove (not shown) formed on the front side of the keyboard chassis 12, and reference numeral 20 is disposed between the keyboard chassis 12 and the key pressing force transmission mechanism 16. The reference numeral 22 denotes a switch board provided with a rubber switch 22 a corresponding to the key 10.

A stopper 24 hangs downward from the middle of the key 10 in a downward direction.
Penetrates a stopper insertion hole 12b formed in the base portion 12a of the keyboard chassis 12. A hook-like stopper claw 24a formed forward at the tip of the stopper 24 comes into contact with the lower surface of the upper limit buffer member 26 fixed to the front lower surface of the stopper insertion hole 12b, so that the key 10 is released when the key is released. The lower limit buffer member 2 which regulates the upper limit and is fixed to the front upper surface of the stopper insertion hole 12b.
The lower surface of the key 10 abuts on the upper surface of the key 8 to regulate the lower limit of the key 10 when the key is pressed.

At the front end of the key 10, a key guide portion 10a integrally formed with the key 10 hangs downward. Key buffer member 3 fixed to the upper surface of the front end of chassis 12
The key 0 is supported so that the lower surface of the front end of the key 10 abuts on the key 10 to regulate the vertical swing range of the key 10.

The keyboard frame 12 has a box portion 12c continuously provided in front of the base portion 12a.
In the vertical wall portion 12d of c, slits aligned with the number of the hammers 18 are formed.

A hammer 18 is provided on the inner surface of the bottom of the box portion 12c connected to the front of the keyboard chassis 12.
A shock absorbing member 32 is fixedly contacted with the tip 18a of the hammer 18 so as to absorb the impact caused by the rotation of the hammer 18 and stop the rotation of the hammer 18.

The hammer 18 has a tip 18a in which an alloy or the like having a high specific gravity is sealed, and a pivot 18b is protrudingly provided at a swing center portion. The hammer 18 is swingable by being fitted into a U groove (not shown) of the section.

The key pressing force transmitting mechanism 16 includes an annular key pressing force transmitting lever 34 having a cavity 34a extending in the front-rear direction of the key 10, that is, a direction orthogonal to the direction in which the keys 10 are arranged.
A shaft member 36 that is inserted into the space 34a of the annular keying force transmission lever 34 and extends in the direction in which the keys 10 are arranged;
6 and a supporting member 38 for supporting the supporting member 6.

Here, the annular keying force transmitting lever 34 has a flat keying force transmitting surface 34b on the upper surface, and a support shaft 18b of the hammer 18 on the lower surface on the front side.
Is formed in the vicinity of the rear end portion 18c. The lower surface on the rear side is formed as a flat locking portion 34d for locking one end of the spring 20. Spring 2
Reference numeral 0 denotes an annular key pressing force transmission lever 34 having one end locked to the locking portion 34d and the other end locked to the base portion 12a.
And the keyboard chassis 12.

A support member 38 for supporting the shaft member 36
Are formed so as to be slidable in the front-rear direction of the key 10 by driving the solenoid 40, that is, in the direction orthogonal to the arrangement direction of the keys 10. The support member 38 is driven by driving the solenoid 40.
Slides, the shaft member 36 moves in the space 34a of the annular key pressing force transmission lever 34 in the front-back direction of the key 10, that is, the direction orthogonal to the arrangement direction of the keys 10.

An actuator 1 is provided on the inner surface of the key 10 whose cross section is formed in a substantially U-shape and whose inside is hollow.
0b is formed to protrude. This actuator 10b
Is a key pressing force transmitting surface 34b on the upper surface of the key pressing force transmitting lever 34.
The size and the projection forming position are set so as to abut against.

In the above configuration, first, when the shaft member 36 is disposed on the side of the locking portion 34d in the space 34a of the annular key pressing force transmission lever 34 as shown in FIGS. Will be described. In this case, the key operation of the key 10 which is normally stopped at the initial position is performed by the key pressing operation.
When the key 10 swings in the direction indicated by the solid arrow in FIG. 3 with the key bearing portion 14 as a fulcrum, the actuator 10b presses the key pressing force transmitting surface 34b of the annular key pressing force transmitting lever 34, and the key is pressed. A key pressing force accompanying the operation is transmitted to the annular key pressing force transmission lever 34. The ring pressing force transmitting lever 3 to which the key pressing force accompanying the key pressing operation of the key 10 is transmitted.
4 rotates about the shaft member 36 as a fulcrum.

Here, since the shaft member 36 is disposed on the locking portion 34d side in the space 34a of the annular key pressing force transmitting lever 34, the annular key pressing force transmitting lever 34 is 3. The upper end of the hammer 18 is pivoted in the direction indicated by the dashed arrow, and the rear end 18c of the hammer 18 is pushed down by the projection 34c of the annular keying force transmission lever 34, as shown in FIG.
The tip 18a is pivoted upward with the fulcrum as a fulcrum.

Therefore, as shown in FIGS. 1 to 5, the shaft member 36 is formed in the space 34 of the annular key pressing force transmission lever 34.
When the key 10 is disposed on the locking portion 34d side, the return force (reaction force against key depression) for returning the key 10 to the initial position is given by the mass of the hammer 18, so that A touch feeling very similar to a hammer action of an acoustic piano (hereinafter, referred to as "piano touch") can be obtained.

At this time, the shaft member 36 is
Of the spring 20 when the annular key pressing force transmission lever 34 rotates is slightly suppressed. Therefore, the piano touch given by the mass of the hammer 18 is not impaired.

Next, a case where the solenoid 40 is driven to move the shaft member 36 from the position shown in FIGS. 1 to 5 to the position shown in FIG. 6 will be described. That is, a case where the shaft member 36 is disposed on the side of the protrusion 34c in the space 34a of the annular keying force transmission lever 34 as shown in FIG. 6 will be described. In this case, when the key 10 swings in the direction indicated by the solid line in FIG. 6 with the key bearing portion 14 as a fulcrum by the key pressing operation of the key 10 which is normally stopped at the initial position, the actuator 10b transmits the annular key pressing force. The key pressing force transmitting surface 34b of the lever 34 is pressed,
A key pressing force accompanying the key pressing operation of the key 10 is transmitted to the annular key pressing force transmission lever 34. An annular keying force transmitting lever 34 to which a keying force associated with a keying operation of the key 10 is transmitted.
Rotates about the shaft member 36 as a fulcrum.

Here, since the shaft member 36 is disposed on the side of the projection 34c in the space 34a of the annular key pressing force transmitting lever 34, the annular key pressing force transmitting lever 34 is pivoted about the shaft member 36 as shown in FIG. When the spring 20 is rotated in the direction indicated by the upper dashed arrow, the spring 20 is compressed by the locking portion 34d of the annular key pressing force transmission lever 34, and the state shown in FIG. 7 is obtained.

Accordingly, as shown in FIGS. 6 and 7, the shaft member 36 is provided with the space 34 of the annular key pressing force transmission lever 34.
If the key 10 is disposed on the side of the protrusion 34c, the return force for returning the key 10 to the initial position (reaction force against key depression) is given by the elastic force of the spring 20, so that A touch feeling very similar to the touch of the organ (hereinafter, referred to as “organ touch”) can be obtained.

At this time, since the shaft member 36 is disposed on the projection 34c for transmitting the key pressing force to the hammer 18, even when the annular key pressing force transmission lever 34 is rotated, the shaft member 36 is provided by the projection 34c. The hammer 18 is not pushed down, and the hammer 18 does not move from the initial position. Therefore, the organ touch given by the elastic force of the spring 20 is not impaired.

As described above, according to the keyboard device of the electronic musical instrument according to the present invention, when the key 10 is depressed, the hammer 1 is used as key return means for applying a return force to the key 10 to the initial position.
8 and a spring 20 are provided.
The return force can be applied to the key 10 almost independently of the spring 8 and the spring 8. For this reason, it is also possible to obtain a keyboard device for an electronic musical instrument in which the initial load of the key 10 (the static load at the start of movement when the hammer is slowly moved) is equal and the inertia of key pressing, that is, the response is different.

FIG. 8 shows a static load characteristic curve of a key (a characteristic of a static load applied to a key pressing process when the key is operated slowly), which is disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 8-30260. In such a configuration in which the spring action always affects the action of the hammer, assuming that the initial load when the spring and the hammer act is 60 g (FIG. 8A), only the spring is used. Initial load when applied is 6
It must be less than 0 g, for example, 40 g (FIG. 8C). Then, the point at which the static load is changed from 40 g to 60 g according to the movement of the hammer is determined (FIG. 8B).

However, according to the keyboard device for an electronic musical instrument according to the present invention, the hammer 18 and the spring 20 can apply a restoring force to the key 10 almost independently.
As shown in FIGS. 1 to 5, the shaft member 36 is engaged with the locking portion 34d in the space 34a of the annular key pressing force transmission lever 34.
The initial load when the hammer 18 is actuated is set to 60 g (FIG. 8D), and the shaft member 36 is moved to FIG.
As shown in FIG. 7 to FIG. 7, when the annular key pressing force transmission lever 34 is disposed on the side of the protrusion 34c in the space 34a and the initial load when the spring 20 is applied is 60 g (FIG. 8).
(E)) It is possible to obtain a keyboard device for an electronic musical instrument in which the initial load of the key 10 is equal and the inertia of key depression, that is, the response is different.

As is apparent from FIGS. 8D and 8E, the static load characteristics when the spring 20 is actuated and the static load when the hammer 18 is actuated have different static load characteristics. different.

FIG. 9 shows another embodiment of the keyboard device for an electronic musical instrument according to the present invention.
The same reference numerals as those used in FIGS. 1 to 7 denote the same or corresponding constituent members of the keyboard device of the electronic musical instrument shown in FIG.

The keyboard device for an electronic musical instrument according to the present invention shown in FIG. 9 differs from the keyboard device for an electronic musical instrument shown in FIGS. 1 to 7 in that a hammer 180 is used instead of the spring 20.

The hammer 180 is set differently from the hammer 18 in terms of the moment of inertia generated corresponding to the acceleration when the hammer rotates (the mass or length is set differently). The keying force transmission mechanism 16 is arranged symmetrically with respect to the hammer 18 with respect to the center.

That is, the hammer 180 is connected to the keyboard chassis 12.
Is swingably locked in a U-shaped groove (not shown) formed on the rear side of the.

The tip 180 of the hammer 180 is provided at the bottom of the step 12 e continuously provided in front of the keyboard chassis 12.
The cushioning member 320 with which a contacts a is fixed, and absorbs the impact due to the rotation of the hammer 180,
The rotation of is stopped.

The hammer 180 is formed of a resin having an elastic force, an alloy or the like having a high specific gravity is sealed in a tip portion 180a, and a support shaft 180b is protruded from a swing center portion. The support shaft 180b is fitted into a U-shaped groove (not shown) at an intermediate portion of the keyboard frame 12, so that the hammer 180 can swing.

The key pressing force transmitting mechanism 16 includes an annular key pressing force transmitting lever 340 having a space 340 a extending in the front-rear direction of the key 10, that is, the direction orthogonal to the arrangement direction of the keys 10.
And a shaft member 36 which is inserted into the space 340a of the annular key pressing force transmission lever 340 and extends in the arrangement direction of the keys 10.
And a support member 38 that supports the shaft member 36 at both ends in the arrangement direction of the keys 10 of the keyboard device.

Here, the annular key pressing force transmission lever 340 is
The upper surface is formed as a flat key pressing force transmission surface 340b, and the lower surface on the front side thereof is provided with the support shaft 18 of the hammer 18.
A protruding portion 340c abutting on the rear end portion 18c near b is formed. Further, on the lower surface on the rear side, a projection 340d is formed which comes into contact with the rear end portion 180c near the support shaft 180b of the hammer 180.

A support member 38 for supporting the shaft member 36
Is formed so as to be movable in the front-back direction of the key 10 by driving the solenoid 40, that is, in the direction orthogonal to the arrangement direction of the keys 10. The support member 38 is driven by driving the solenoid 40.
Moves, the shaft member 36 moves in the space 340a of the annular key pressing force transmission lever 340 in the front-rear direction of the keys 10, that is, in the direction orthogonal to the arrangement direction of the keys 10.

An actuator 1 is provided on the inner surface of the key 10 whose cross section is formed in a substantially U-shape and whose inside is hollow.
0b is formed to project from the actuator 10b.
The key pressing force transmitting surface 34 on the upper surface of the key pressing force transmitting lever 340
The size and position are set so as to come into contact with Ob.

In the above structure, first, as shown in FIG.
A case will be described in which the space 340a is disposed on the side of the protrusion 340d. In this case, when the key 10 swings in the direction indicated by the solid arrow in FIG. 9 with the key bearing portion 14 as a fulcrum by the key pressing operation of the key 10 which is normally stopped at the initial position, the actuator 10b transmits the annular key pressing force. The key pressing force transmitting surface 340 b of the lever 340 is pressed, and the key pressing force associated with the key pressing operation of the key 10 is transmitted to the annular key pressing force transmitting lever 340. Then, the ring pressing force transmitting lever 340 to which the key pressing force accompanying the key pressing operation of the key 10 is transmitted rotates about the shaft member 36 as a fulcrum.

Here, the shaft member 36 is provided with a protrusion 340 in the space 340a of the annular key pressing force transmission lever 340.
Since it is arranged on the d side, the annular key pressing force transmission lever 340 rotates in the direction of the dashed arrow in FIG.
c pushes down the rear end 18c of the hammer 18, whereby the tip 18a of the hammer 18 is pivoted upward about the support shaft 18b.

Accordingly, when the shaft member 36 is disposed on the side of the projection 340d in the space 340a of the annular key pressing force transmission lever 340 as shown in FIG. 9, the key 10 is moved to the initial position. Since the returning force (reaction force against key depression) to be returned is given by the mass of the hammer 18, a piano touch according to the mass and length of the hammer 18 can be obtained.

At this time, since the shaft member 36 is disposed on the projection 340d for transmitting the key pressing force to the hammer 180, even when the annular key pressing force transmission lever 340 is rotated, the shaft member 36 is not moved by the projection 340d. The hammer 180 is not pushed down, and the hammer 180 does not move from the initial position. Therefore, the piano touch according to the mass and length of the hammer 18 is not impaired.

Next, a case will be described in which the solenoid 40 is driven to move the shaft member 36 from the position shown in FIG. 9 to the protrusion 340c side in the space 34a of the annular key pressing force transmission lever 340. That is, the shaft member 36 is
A description will be given of a case where the annular key pressing force transmission lever 340 is disposed on the side of the protrusion 340c in the space 340a. In this case, when the key 10 swings in the direction indicated by the solid arrow in FIG. 9 with the key bearing portion 14 as a fulcrum by the key pressing operation of the key 10 which is normally stopped at the initial position, the actuator 10b transmits the annular key pressing force. The key pressing force transmitting surface 340 b of the lever 340 is pressed, and the key pressing force associated with the key pressing operation of the key 10 is transmitted to the annular key pressing force transmitting lever 340. The ring pressing force transmitting lever 340 to which the key pressing force accompanying the key pressing operation of the key 10 is transmitted is connected to the shaft member 3.
It turns around 6 as a fulcrum.

Here, the shaft member 36 is provided with a protrusion 340 in the space 340a of the annular key pressing force transmission lever 340.
Since it is arranged on the side c, the annular key pressing force transmission lever 340 rotates in the direction of the dashed line arrow in FIG.
The rear end portion 180c of the hammer 180 is pushed down by 40d, whereby the front end portion 180a of the hammer 180 is rotated upward about the support shaft 180b.

Therefore, the shaft member 36 is positioned in the space 340 a of the annular key pressing force transmission lever 340 in the projection 3.
When the key 10 is disposed on the side of the hammer 180, the return force (reaction force against key depression) for returning the key 10 to the initial position is given by the mass of the hammer 180. Can be obtained according to the piano touch.

At this time, since the shaft member 36 is disposed on the protrusion 340c for transmitting the key pressing force to the hammer 18, even when the annular key pressing force transmission lever 340 is rotated, the shaft member 36 is provided by the protrusion 340c. The hammer 18 is not pushed down, and the hammer 18 does not move from the initial position. Therefore, the piano touch according to the mass and the length of the hammer 180 is not impaired.

By mounting the electronic musical instrument keyboard device according to the present invention on the electronic musical instrument, various applications are possible. For example, FIG. 10 is a block diagram showing an example. This electronic musical instrument includes a keyboard device for an electronic musical instrument according to the present invention described with reference to FIGS. 1 to 7 as a keyboard device 200. Further, a key press detection circuit 202, a panel device 204, and a musical sound generation device 206, a pedal operator 208, a bender operator 210, a solenoid driving device 212, and a control device 2 that controls these components overall
14, and various operations can be performed by operating each operation element (switch) provided on the panel device 204.

All of these various operations are performed by the controller 214.
However, in order to simplify the explanation and facilitate the understanding, the explanation of the substantial operation will be made by explaining the switches provided on the panel device 204 and the liquid crystal display device (LCD). The attachment of the flowchart at the time of operation will be omitted.

The panel device 204 includes, as the tone selection switch 300, a piano tone switch 300a for selecting a piano (Piano) tone and a grand piano tone switch for selecting a grand piano (G. Piano) tone. 300b, Organ
Organ tone switch 300c for selecting a tone
A string timbre switch 300d for selecting a timbre of Strings is provided. When the timbre selection switch 300 is pressed, the timbre is switched to the tone assigned to the pressed timbre selection switch 300.

The panel device 204 is provided with a touch switch 302. When the touch switch 302 is operated, the solenoid 40 of the keyboard device 200 according to the present invention is driven to drive the shaft member 3.
6 is moved within the space 340a of the annular key pressing force transmission lever 340 so that the touch feeling can be switched between piano touch and organ touch. The touch changeover switch 302 is a toggle switch. Even if the touch changeover switch 302 is operated during key depression, the shaft member 36 is not moved and the touch feeling is not changed.

Further, a touch synchronization switch 304 is provided on the panel device 204. When the touch sync switch 304 is operated, the switching of the timbre and the switching of the touch feeling are performed in a synchronizable sync mode, and the touch feeling is switched in accordance with the tone color of the pressed tone color selection switch 300. This touch sync switch 304 is also a toggle switch,
When in the synchro mode, the light emitting diode (LED) 307 is turned on.

Note that the touch sync switch 3
Even if 04 is operated, the switching of the touch feeling is not performed, and the switching of the touch feeling is performed only when the touch sync switch 304 is operated when all the keys are in the released state. It has become. However, when the touch sync switch 304 is operated during key depression, the touch feeling may be switched after all keys are released, without being limited to the above.

When the touch sync switch 304 is turned on when a tone change signal (program change signal in MIDI) is received from an automatic performance device or the like connected to the outside of the electronic musical instrument by MIDI or the like. , The touch feeling is switched together with the timbre.

Further, the panel device 204 is provided with a touch assign switch 306. When the touch assign switch 306 is operated, the function of the touch switch 302 is assigned to an operator different from the touch switch 302, and an operator different from the touch switch 302, for example, the pedal operator 208 is operated. Then, the function of the touch switch 302 is assigned to the pedal operator 208,
By operating the pedal operator 208 during a performance,
Switching of the touch feeling can be performed. The operators to which the function of the touch changeover switch 302 can be assigned are not limited to the pedal operators 208, but may be the bender operators 210 or modulation operators.

The LCD 308 is configured to display information such as the following items (1) to (4).

That is, the displayed items are: (1) Current timbre (Piano / G. Piano / Or)
gan / Strings) (2) Current touch (piano touch / organ touch) (3) Operator assigned to touch switching function (none / pedal / bender) (4) Touch switching operation is performed during key press Error message is displayed for two seconds when the key is not switched (touch cannot be switched / touch switch failed while the key is pressed).

In the electronic musical instrument described above, a key may not be pressed when the touch feeling is switched. Furthermore, a signal for touch switching different from a tone switching signal such as a program change signal is stored in the automatic performance information, and the touch feeling is automatically switched as the music progresses due to the automatic performance. Is also good.

In each of the above-described embodiments, a rack and pinion mechanism is provided at both ends of the shaft member 36, and the shaft member 36 is driven by rotating the pinion with a motor. Good.

[0081]

As described above, according to the keyboard device for an electronic musical instrument according to the present invention, it is possible to prevent a plurality of key return means for applying a return force to a key from affecting each other. As a result, the touch feeling based on each key return means can be obtained independently, and an excellent effect that the touch feeling can be remarkably improved can be achieved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing an arrangement state of keys in an example of an embodiment of a keyboard device for an electronic musical instrument according to an embodiment of the present invention, in which respective constituent members are shown with different types of hatching, and a touch feeling of piano touch. The state in which can be obtained.

FIG. 2 is a side view of FIG.

FIG. 3 is a side sectional view taken along line III-III of FIG. 1;

FIG. 4 is an enlarged view of a main part of FIG. 3, showing each component member with different types of hatching.

5 is a side sectional view corresponding to FIG. 3 and showing a key pressed state in a state where a touch feeling of a piano touch can be obtained.

FIG. 6 is a side sectional view corresponding to FIG. 3, showing a state where a touch feeling of an organ touch can be obtained.

FIG. 7 is a side sectional view corresponding to FIG. 6 and showing a key pressed state in a state where a touch feeling of organ touch can be obtained.

FIG. 8 is a graph showing a static load characteristic curve of a key;
(A), (b) and (c) show the static load curve of the key according to the prior art, and (d) and (e) show the static load curve of the key by the keyboard device of the electronic musical instrument according to the present invention.

FIG. 9 is a side sectional view corresponding to FIG. 3, showing another embodiment of the keyboard device of the electronic musical instrument according to the present invention.

FIG. 10 is a block diagram showing an example of an electronic musical instrument provided with a keyboard device for an electronic musical instrument according to the present invention.

[Explanation of symbols]

 Reference Signs List 10 key 10b actuator 16 key pressing force transmitting mechanism 18, 180 hammer 20 spring 34, 340 annular key pressing force transmitting lever 34a, 340a void 34b, 340b key pressing force transmitting surface 34c, 340c, 340d Projecting portion 34d Locking portion 36 Shaft member 38 Support member 40 Solenoid

Claims (5)

[Claims] A key which is stationary at an initial position in a normal state and which can be swung within a predetermined area by a key-pressing operation; and a key within the predetermined area when the key is pressed. Key return means and second key return means for providing return forces of different characteristics for returning the key to the initial position; and one of the first key return means and the second key return means A keyboard device for an electronic musical instrument, comprising: a selection unit that selects a key recovery unit; and a suppression unit that suppresses a return force of a key recovery unit other than the key recovery unit selected by the selection unit. 2. The first key return means and the second key return means are configured such that a static load when the key starts swinging by a key pressing operation is substantially the same. The keyboard device for an electronic musical instrument according to claim 1, wherein: 3. The method according to claim 1, wherein the first key return means and the second key return means are configured such that a static load of a generated force varies depending on a position of a key. A keyboard device for an electronic musical instrument according to claim 2. 4. The apparatus according to claim 1, wherein the first key return means and the second key return means have different moments of inertia generated according to the acceleration of the key pressing operation. The keyboard device for an electronic musical instrument according to any one of claims 1, 2 and 3. 5. In a normal state, a plurality of keys which are stopped at an initial position and are arranged so as to be swingable in a predetermined area by a key pressing operation, and are formed so as to protrude below the keys, and are used for key pressing operations of the keys. A projecting member for transmitting a corresponding key pressing force; a first position and a second position, which are located below the key, extend in the key arrangement direction, and are located in a direction orthogonal to the key arrangement direction. A shaft member movably arranged between the shaft member and a key pressing force accompanying the key pressing operation when the key is operated by pressing the key, and the shaft member is used as a fulcrum. A key pressing force transmitting member that is rotated and switches a rotation fulcrum according to whether the shaft member is disposed at the first position or the second position; Abuts on each of the members, and A first key return member and a second key return member having different return force characteristics when a key pressing force is transmitted by movement to return the key to the initial position. The key pressing force transmitting member transmits the key pressing force to the first key return member when the shaft member is disposed at the first position, and the key pressing force transmits the key pressing force to the first key returning member. 2 is suppressed from being transmitted to the key return member, and when the shaft member is disposed at the second position, the key pressing force is reduced to the second position.
And transmitting the key pressing force to the first key return member, while suppressing the transmission of the key pressing force to the first key return member.