JPH0590566U - Electronic musical instrument keyboard device - Google Patents

Abstract

(57) [Summary] [Purpose] The feeling of mass of the key is obtained even when the key is returned due to releasing the key, and the feeling of mass of the key is not impaired even when the keys are repeatedly struck. Even if they come into contact with each other, the feeling of touching the key is not impaired, and the assembly is simple and the manufacturing cost is low. [Structure] A jack 10a is rotatably attached to a key 1, and a return load applying section and a catcher 27 are fixed to the key 1, and the jack 10a is moved and rotated by pressing the key 1.
A hammer 9 which is rotated by is pivotally attached to the member 28. The hammer 9 comes into contact with the return load applying portion / catcher 27 after the key 9 is rotated by pressing the key and when the key 1 is returned when the key is released.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a keyboard device for an electronic musical instrument, particularly an electronic piano.

[0002]

[Prior Art]

 Conventionally, as shown in FIG. 6, a jack b that moves and rotates by a force transmitted from a key a and a hammer-shaped member c that rotates by a force transmitted from a jack b that moves and rotates. An electronic musical instrument provided with the electronic musical instrument is known.

[0003]

[Problems to be solved by the device]

 According to the above-described conventional keyboard device, a key touch feeling similar to that of an acoustic piano can be obtained not only when the player strongly hits the key a, but also when the player weakly hits the key a. There was a problem in that the mass feeling of the key could not be obtained, and the mass feeling of the key could not be obtained even after repeated hits.

According to the present invention, a sense of mass of the key can be obtained even when the key is returned due to key release, the sense of mass of the key is not impaired even when the keys are repeatedly struck, and the hammer-shaped member rotated by the keystroke is used as the key. It is an object of the present invention to provide a keyboard device for an electronic musical instrument, in which the touch feeling of a key is not impaired even if it vibrates when it abuts, and the assembly is simple and the manufacturing cost is low.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a jack that moves and rotates by a force transmitted from a key and a hammer-shaped member that rotates by a force transmitted from a jack that moves and rotates. In a keyboard device of an electronic musical instrument, a key is a hammer-like member that is rotated by a key press, and a return load-applying unit that abuts when the hammer-like member that is rotated by a jack returns to the initial position and applies a return load to the key. It is characterized in that it is provided with a catcher that abuts when the member returns to the initial position to reduce the impact of the hammer-shaped member, and the return load applying section and the catcher are integrated.

[0006]

[Action]

 When the key is pushed down, the jack also moves downward, and the downward movement of the jack causes the hammer-shaped member (hereinafter referred to as the hammer) to rotate. When the key is struck, the hammer has an inertial effect, and even when the key is struck, it exerts an opposing force against the key depression due to the weight of the hammer. When the key is pushed down to some extent, the jack comes into contact with the fixing member and starts to rotate, and at this time, the jack receives a drag force from the fixing member, so the player who is weakly hitting must temporarily push down the key with a large force. I will have to do it. When the key is pushed further down, the jack will disengage from the hammer, and the force of the hammer's own weight will not be transmitted to the key. For this reason, the performer who has been hitting weakly feels that he or she is weak at one time. After that, the key reaches the lower limit position, while the hammer rotates to the rotation limit position by inertia and then starts to rotate in the opposite direction due to its own weight, and contacts the return load applying part and the catcher of the key at the lower limit position. .. At this time, the abutting force of the hammer is dispersed in the front-rear direction or the left-right direction of the key, so the impact is relieved and the touch feeling of the key is not impaired. Since the load due to the self-weight of the hammer is constantly applied to the key as a return load when the key returns, it can be pressed without losing the feeling of mass even if the keys are repeatedly pressed during the return. ..

The key returns to the initial position by applying the return load of the spring and the hammer, the hammer also returns to the rotation limited position, and the jack also returns to the initial position by the force of the elastic member to prepare for the next key depression. ..

Since the return load applying section and the catcher included in the key are integral with each other, the mold structure is simpler than the case where these are separately provided, so that the mold is inexpensive and the key can be manufactured at low cost. It is possible and easy to assemble.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the present invention. In the figure, reference numeral 1 denotes a synthetic resin key (white key), which is rotatably supported by a keyboard frame 2 at its base end, and which is formed in a substantially box shape and has an open lower surface and both side walls. The upper limit stopper 3 projects downward and is integrally formed with at least one front end of the key 1, and an actuator 4 is provided on the inner upper wall of the key 1. The upper limit stopper 3 also serves as a return load applying portion and a catcher. A switch 5 and a fulcrum member 6 that are pressed by the actuator 4 to operate are fixed to the keyboard frame 2, and a fulcrum 7 of the fulcrum member 6 is rotatably provided with a hammer 9 having a weight 8 attached to one end thereof. It is supported. In the inner space of the key 1, a jack 10 having a thickness substantially equal to the width between both side walls is rotatably pivotally supported, and one end thereof is locked in a recess 11 formed in the upper portion of the fulcrum member 6. The other end of the strip-shaped leaf spring 12 is urged counterclockwise in the figure, and the hammer contact portion 14 protruding downward from the slit 13 of the keyboard frame 2 contacts the jack contact portion 15 of the hammer 9. It is like this.

To explain the operation of this embodiment, when the key 1 is pushed down, the key 1 starts to rotate counterclockwise, and the jack 10 moves downward accordingly. With the movement of the jack 10, the hammer contact portion 14 presses the jack contact portion 15, and the hammer 9 starts rotating counterclockwise. At this time, the player receives the load of the hammer 9. When the key 1 is further pushed down, the projecting portion 16 of the jack 10 comes into contact with the keyboard frame 2 as shown in FIG. 2, and the jack 10 starts to rotate. At this time, the player receives the drag force from the keyboard frame 2 and the load of the leaf spring 12 provided on the jack 10. When the key 1 is further pushed down, the jack 10 is disengaged from the hammer 9 as shown in FIG. However, since the hammer 9 continues to rotate due to inertia, the weight of the hammer 9 is not transmitted to the key 1, and at this time, the player feels as if he / she is missing for a moment. After that, the key 1 comes into contact with the key lower limit stopper felt 17, and the rotation of the key 1 ends.

The hammer 9 contacts the hammer upper limit stopper felt 18 provided on the keyboard frame 2 and then starts to rotate clockwise due to its own weight, and as shown in FIG. 4, the hammer to which the felt 19 is attached is attached. The front end inclined portion 20 of 9 abuts on the return load applying portion formed below the rear portion of the upper limit stopper 3 of the key 1 and the inclined portion 21 that acts as a catcher, and rotation return of the hammer 9 is prevented. .. By this abutment, the rebound vibration of the hammer 9 is suppressed, and this abutting force is transmitted to the player through the key 1, so that it has the effect of being felt as a return of the hammer after keystroke in a normal acoustic piano.

At the time of releasing the key, the key 1 is rotated to its initial position by the hammer 9 which rotates clockwise by its own weight through the inclined portion 21 thereof, and the elastic force of the leaf spring 12 causes the hammer 1 of the jack 10 to hit. The contact portion 14 quickly returns to the jack abutting portion 15 of the hammer 9, and the upper portion of the jack 10 abuts on the inner upper wall of the key 1, so that the key 1 is, as shown in FIG. Returns to the initial position where it contacts the key upper limit stopper felt 22. The hammer 9 also comes into contact with the hammer lower limit stopper felt 23 and ends its rotation.

At the time of releasing the key, the key 1 returns while the load of the hammer 9 is constantly applied to the upper limit stopper 3 via the inclined portion 21, so that the finger touching the key 1 has a sense of mass. .. Therefore, this feeling of mass is imparted to the re-depressed key while the key 1 is returning, and the feeling of mass is not impaired even when the keys are repeatedly hit.

FIG. 5 shows another embodiment of the present invention. In this embodiment, the key 1 is supported by a fulcrum member 25 provided on the keyboard frame 2 at an intermediate portion thereof and is swingable, and a jack 10a is provided at an upper part behind the fulcrum. A shaft support 26 is rotatably supported, and a return load applying portion / catcher-27 is fixed. Above the jack 10a and the return load applying portion / catcher-27, there is provided a hammer 9 whose one end is rotatably supported by a member 28 standing on the keyboard frame 2, and a protruding portion 16a of the jack 10a. A stopper 29 having one end fixed to the member 28 is provided above the. The jack 10a is biased to the left in the figure by a tension spring 30 having one end locked to the return load applying section / catcher 27, and its lower end stops at a position where it is locked to the side wall of the recess 31 of the key 1. Then, the forked end portion of the bifurcated portion is fitted into and abuts on the hammer 9. The return load applying portion / catcher 27 has an inclined portion 32 on the side of the tip portion thereof, and the inclined portion 32 acts as the catcher and contacts the hammer 9 when the key is released. A return load is applied to the key 1 to give a feeling of mass to the finger in contact with the key 1.

In the figure, the hammer 9 has a weight 8, and a support portion 33 provided with a hammer upper limit stopper felt 18 and a hammer lower limit stopper felt 23 for regulating the upper and lower limit positions of the hammer 9 is provided at the upper and lower positions thereof. It is provided.

[0016]

[Effect of the device]

 According to the present invention, as described above, since the key integrally has the return load applying portion and the catcher, the mass feeling of the key can be obtained even when the key is returned when the key is released, and the mass feeling of the key is impaired even when repeatedly hitting. Moreover, when the hammer rotated by hitting the key comes into contact with the key, the impact is not eased and the touch feeling of the key is not impaired. Furthermore, the assembly is easy and the manufacturing cost is low. Have.

[Brief description of drawings]

FIG. 1 is a cutaway side view of an embodiment of the present invention in a key release state.

FIG. 2 is a cutaway side view of the above embodiment in which the jack has started to rotate after a key is pressed.

FIG. 3 is a cutaway side view of the above embodiment in which the jack is disengaged from the hammer after the key is pressed.

FIG. 4 is a cutaway side view of the above embodiment immediately after key release.

FIG. 5 is a cutaway side view of another embodiment of the present invention in a key release state.

FIG. 6 is a cutaway side view of a keyboard device of a conventional electronic musical instrument.

[Explanation of symbols]

1 key 3 upper limit stopper of key 9 hammer 10 jack 21 inclined part (return load applying part, catcher) 21a return load applying part and catcher 31 inclining part

Claims (1)

[Scope of utility model registration request] 1. A keyboard device for an electronic musical instrument, comprising a jack that moves and rotates by a force transmitted from a key, and a hammer-shaped member that rotates by a force transmitted from the moving and rotating jack. , When the hammer-shaped member rotated by the jack returns to the initial position, the return-load applying portion that abuts and gives a return load to the key, and the hammer-shaped member rotated by pressing the key returns to the initial position. Equipped with a catcher that abuts and reduces the impact of the hammer-shaped member,
A keyboard device for an electronic musical instrument, wherein the return load applying section and the catcher are integrated.