JP2003091274A - Keyboard device for electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a keyboard device of an electronic musical instrument capable of reproducing a touch feeling and a repeated hitting property peculiar to a ground piano. SOLUTION: The keyboard device 10 of an electronic piano is provided with an action mechanism 16 similar to the ground piano and a hammer stopper 20 blocking a turning operation of the hammer shank 18. The action mechanism 16 is provided with a wippen 46 and a back check 52, etc., other than the hammer shank 18 and the position relation is almost the same as the position relation in the actual ground piano. The hammer stopper 20 is disposed at a position of blocking the operation when the hammer shank 18 is almost horizontally turned. By such constitution, movements of complicated actions peculiar to the ground piano are simulated and the touch feeling and the repeated hitting property extremely close to the ones of the actual ground piano are obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard device used for an electronic keyboard instrument such as an electronic piano.

[0002]

2. Description of the Related Art Conventionally, in this type of keyboard device, for the purpose of reproducing the touch feeling of an acoustic piano, a load simulating an action is rotationally displaced along with a key pressing operation. Those equipped with a hammer arm that gives

An example of such a keyboard device is shown in FIG.
As shown in FIG. 7, a hammer arm P14 that is rotatable about an axis P10 and presses the rear end of the key P12 from above.
It is known to have. Further, as shown in FIG. 7, there is also known a keyboard device including a hammer arm P20 that is rotatable about an axis P16 and that lifts the tip of the key P18 by pressing the key P18 from below ( (See Japanese Patent Laid-Open No. 4-347895).

[0004]

By the way, the action of a grand type acoustic piano (hereinafter referred to as a grand piano) is provided with a rotatable wippen and a hammer shank, and when a key depression operation is performed. By rotating both independently, a two-step complicated action load is applied to the key. On the other hand, since the conventional keyboard device shown in FIGS. 6 and 7 is a simple one in which one hammer arm P14, P20 rotates about one axis, a complicated action load in an actual grand piano is applied. There is a problem that it cannot be simulated and the touch feeling cannot be sufficiently reproduced.

Moreover, in the above conventional keyboard device,
The touch feeling when hitting one key repeatedly is not taken into consideration, and there is a problem in that a feeling of incongruity remains in the performance when hitting continuously. The present invention has been made to solve the above problems, and an object of the present invention is to provide a keyboard device for an electronic musical instrument, which can reproduce the touch feeling and continuous hitting characteristic of an acoustic piano, especially a grand piano.

[0006]

A keyboard device for an electronic musical instrument according to claim 1, which is configured to achieve the above object, is provided with an action load simulating member for applying a load simulating an action to a key. In the keyboard device of the electronic musical instrument, the action load simulating member is lifted by a key that is pressed to rotate, and a first rotating member that rotates toward the inner side of the key and the first rotating member that rotates. Of the second rotating member that is pushed up by the rotating member and rotates toward the front side of the key, and the second rotating member that starts free movement apart from the first rotating member. And a hammer stopper for preventing movement.

According to this keyboard device, when a key-depressing operation is performed, the first rotating member is lifted by the depressed key and rotates toward the back side of the key. Also, the second
The rotating member is pushed up by the rotating first rotating member and rotates toward the front side of the key. And the first
The hammer stopper, which has started free movement away from the rotating member, is prevented from moving by the hammer stopper.

Therefore, the action load simulation member in the keyboard device according to the first aspect is not a simple one in which one hammer arm rotates about one axis as in the conventional case,
Since the action load is applied to the key by the first and second rotating members, it is possible to simulate a complicated action movement peculiar to a grand piano, and faithfully reproduce the unique touch feeling. it can.

Further, in the keyboard device according to the first aspect, when it is desired to obtain a continuous hitting property similar to that of a grand piano, as described in the second aspect, a tail shape is formed at the tip of the handle member of the second rotating member. Is provided with a head member that is substantially the same as that of a grand piano, a key is provided with a back check member that supports the tail of the head member at the end of key depression, and a hammer stopper is provided with a handle member of the second rotating member. It is preferable to dispose the second rotation member at a position that prevents the movement of the second rotation member when it is rotated substantially horizontally.

According to this structure, the head member of the second rotating member, which is once rotated by pressing the key, is received and supported by the back check as in the case of the grand piano. It is possible to obtain the same continuous hitting property as. Moreover, the second rotating member is
When it is rotated substantially horizontally (that is, the rotation angle when striking a string in an actual grand piano), it is blocked by the hammer stopper, so the blocking position of the second rotating member is the same as in the actual grand piano. become. Therefore, also in this respect, it is possible to obtain the continuous hitting property similar to that of the grand piano.

Further, when it is desired to reproduce the touch feeling and the continuous hitting property, which are closer to those of an actual grand piano, as compared with the keyboard device according to claims 1 and 2, an action is applied to the key as described in claim 3. In a keyboard device of an electronic musical instrument equipped with an action load simulating member for applying a simulated load, as the action load simulating member, a wippen and a hammer shank used for an action of a grand type acoustic piano are arranged, and the key is provided. Is equipped with a back check member that supports the tail of the hammer provided at the tip of the hammer shank when the key is pressed, and a hammer stopper prevents the hammer shank from operating when the hammer shank rotates substantially horizontally. The wippen, hammer shank, and back chain above. It is preferable to substantially the same positional relationship click member and the positional relationship of the ground type acoustic piano.

In such a keyboard device, when a key depression operation is performed, the wippen is lifted by the depressed key and rotated toward the back side of the key. Further, the hammer shank is pushed up by the rotating wippen and rotates toward the front side of the key. Then, the hammer shank, which starts free movement away from the wippen, is stopped by the hammer stopper when rotated substantially horizontally (that is, the rotation angle when striking a string in an actual grand piano). Further, the hammer of the hammer shank that is once rotated by pressing the key is received and supported by the back check, as in the case of the grand piano.

Thus, in the keyboard device according to the third aspect, the wippen, hammer shank and back check used in the grand piano are used in the electronic musical instrument, and further,
Since the positional relationship of these members is substantially the same as the positional relationship in the grand piano, it is possible to reproduce the touch feeling and the continuous hitting property that are closer to those of the actual grand piano, as compared with the keyboard device according to claims 1 and 2. You can Moreover, since the hammer shank is prevented from moving when it is rotated substantially horizontally, the hammer shank has the same blocking position as that of the actual grand piano, and the touch feeling and the continuous hitting property are not impaired.

Here, in the keyboard device according to the third aspect, there is a problem that the cost is increased if the parts used for the action of the grand piano are simply diverted. Also, in the first place, in an electronic keyboard instrument such as an electronic piano, since it is not necessary to strike a string with a hammer,
There is no need to use a hammer with felt as in the past.

Therefore, in the keyboard device according to claim 4, the hammer is formed of wood or resin, and the shape of the tail of the hammer is substantially the same as that of a grand type acoustic piano, and the weight of the hammer is further increased. The weight is almost the same as the weight of a hammer in a grand type acoustic piano.

According to this structure, since the hammer is made of wood or resin, the hammer can be processed easily and at a low cost, while the tail shape of the hammer is almost the same as that of the grand piano hammer. So
The positional relationship and timing of hitting the tail of the hammer and the back check are the same as those of the grand piano, and it is possible to obtain the same continuous hitting property as the grand piano. Furthermore, the weight of the hammer is almost the same as that of a grand piano hammer. In other words, the weight of the hammer is changed for each key so that the weight is continuously lightened from the low tone range side to the high tone range side. Therefore, the movement of the hammer shank becomes similar to that of the grand piano, and the touch feeling of the grand piano can be fully reproduced.

That is, in the keyboard device according to the fourth aspect, it is possible to reduce the cost of the product and at the same time sufficiently reproduce the original touch feeling and continuous hitting property of the grand piano. When the hammer is made of wood or resin as described above, if the weight of the hammer and the center of gravity of the hammer are set to be almost the same as those of an actual grand piano, the touch feeling of the grand piano will be more faithful. It is preferable because it can be reproduced. However, since the center of rotation of the hammer shank and the hammer are separated from each other to some extent, even if the position of the center of gravity is slightly different, if the weight itself of the hammer is almost the same, the touch feeling of the grand piano is Can be fully reproduced.

Further, in the above-mentioned claim 4, since the weight of the hammer is substantially the same as that of the hammer in the grand piano, it is preferable in terms of touch feeling, but it is necessary to change the weight of the hammer for each key. Therefore, the number of parts of the hammer increases. Therefore, the machining and mounting of the hammer and the management of parts become troublesome, and the cost increases.

Therefore, as compared with the invention of claim 4, in order to further reduce the cost without significantly impairing the touch feeling, as described in claim 5, the hammer is made of wood or resin. While forming, the shape of the tail of the hammer is almost the same as that of a hammer in a grand type acoustic piano, and further, the keyboard is divided into a plurality of range groups from the low range side to the high range side, and the hammer is provided for each range group. It is desirable that the hammers have the same weight and the weight of the hammer is gradually reduced toward the high frequency range.

According to this structure, the delicate touch feeling is slightly difficult to reproduce as compared with the case of the above-mentioned claim 4, but the weight of the hammer is gradually reduced from the low frequency side to the high frequency side. By doing so, the touch of the keys in the high range is lighter than that of the keys in the low range, and the touch feeling peculiar to the grand piano can be sufficiently reproduced. Moreover, since the number of parts of the hammer is reduced, the cost can be significantly reduced accordingly.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described with reference to the drawings with reference to specific examples.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1 is a partial cross-sectional view showing a schematic configuration of a keyboard device of an electronic piano as one embodiment. This electronic piano is provided with an electronic sound source (not shown), and a performance sound can be generated from the electronic sound source by pressing a key.

As shown in FIG. 1, the keyboard device 10 includes a metal chassis 12 on which a key 14 swings around a balance pin 13 as a fulcrum by a player's operation, and a load simulating an action on the key 14. Action mechanism 16 for giving
And a hammer stopper 20 that prevents the hammer shank 18 of the action mechanism 16 from rotating.

The chassis 12 is a front side chassis 1 made of sheet metal.
2a and the rear chassis 12b are connected by a rib 12c made of sheet metal extending in the longitudinal direction of the key 14,
It is fixed on the wooden shelf plate 22 by screwing. The key 14 is a wooden keyboard similar to that used in a grand piano. A reed 24, which is provided at the rear end of the front chassis 12a, has a recess (not shown) in which the balance pin 13 is inserted. , Is used as a swing fulcrum of the key 14. A front pin 26 is provided at the front end of the front chassis 12a to prevent the key 14 from swinging left and right by being inserted into the hole 14a at the front end of the key 14.

A printed circuit board 28 is fixed on the upper surface of the front chassis 12a, and a rubber switch 30 for detecting the movement of the key 14 is mounted on the upper surface thereof.
Next, the action mechanism 16 of the present embodiment is similar to the action mechanism used in the grand piano, and is rotated by the capstan screw 42 provided on the upper surface on the rear end side of the key 14 and the wippen rail 44. The wippen 46, which is movably supported, the hammer shank 18, which is rotatably supported by the shank rail 48, and the standing upright on the chassis 12, the wippen rail 44 and the shank rail 48 are positioned above the key 14. A bracket 50 (indicated by a chain double-dashed line in the figure) for supporting the back check 52 provided at the rear end of the key 14 is provided. The wippen 46,
The positional relationship between the hammer shank 18, the back check 52 and the like is almost the same as that in an actual grand piano.

Here, the wippen rail 44, the shank rail 48, and the bracket 50 are arranged in a positional relationship as shown in the plan view of FIG. That is, the bracket 5
0 is the position of the side of the rear end of the lowest-pitched key 14 and the highest-pitched key 14, and the position of the gap D provided at the rear end of the key 14 (upper side in the figure) for each predetermined musical range It is located in
As shown in FIG.
It is fixed on two. And a plurality of brackets 5
A shank rail 48 extending in the arrangement direction of the keys 14 is attached to the upper end portion 50a of 0, and a wippen rail 44 also extending in the arrangement direction of the keys 14 is attached to the rear end portion 50b of the bracket 50, Both rails 44 and 48 are fixed above the key 14.

The wippen 46 is the wippen flange 5
It is rotatably attached to the Wippen rail 44 via 6. The tip of the wippen 46 has a side view substantially L
A character-shaped jack 58 is rotatably attached,
The upper end portion 58a is in contact with the shank roller 18a provided on the hammer shank 18.

The hammer shank 18 is rotatably attached to the shank rail 48 via a shank flange 60. A hammer 64 made of wood is provided at the tip of the hammer shank 18. The hammer 64 is made entirely of wood, unlike a hammer normally used in a grand piano (that is, a hammer in which felt is wound for striking strings). The shape of the tip of the hammer 64 is a simple shape of a substantially rectangular shape in a side view so as to facilitate processing, but the shape of the tail 64b that abuts the back check 52 is almost the same as that of a hammer in a grand piano. ,
It has a smoothly curved shape when viewed from the side.

Further, in the present embodiment, the key 14 is divided into three tone ranges, a low tone range, a middle tone range and a high tone range, and the weight of the hammer 64 is changed for each of these tone ranges. Hammer 64
When changing the weight of the hammer 64, as shown in FIGS. 3A to 3C, the hammer 64 having the same shape (volume) is formed.
Screws of different weight 66a, 66b
Is screwed in. More specifically, as shown in FIG. 3 (A), a large and heavy screw 66a is attached to the hammer 64 for low frequency range, while as shown in FIG. 3 (B), A small screw 66b, which is lighter than the screw 66a, is attached to the hammer 64. Further, as shown in FIG. 3C, no screw is attached to the hammer 64 for the high range. In this way, the weight of the hammer 64 is lightened toward the higher tone range.

Next, as shown in FIG. 1, the hammer stopper 20 is connected to the hammer shank 18 via a hammer stopper stay 68 (shown by a chain double-dashed line in the figure) which is erected on the wippen rail 44. Fixed above. The hammer stopper 20 is a foamed urethane foam 20 having a rectangular cross section, which extends in the arrangement direction of the keys 14 on the lower surface side of the rail member 20a extending along the arrangement direction of the keys 14.
b is attached, and the felt 20c is further attached to the lower surface of the urethane foam 20b. As shown in FIG. 2, the hammer stopper stay 68 is erected at a position where the bracket 50 described above is provided, and the rail members 20a of the hammer stopper 20 are provided at the upper ends of the plurality of hammer stopper stays 68. It is fixed. The mounting position of the hammer stopper 20 is set so as to prevent the hammer shank 18 from moving when the hammer shank 18 is rotated substantially horizontally (that is, the rotation angle when striking a string in an actual grand piano). ing.

Next, the operation of the keyboard device 10 having the above structure will be described. In this embodiment, the operation of the action mechanism 16 when the key 14 is pressed or released is the same as the action mechanism of the grand piano. More specifically, when the player presses the key 14, the key 14 swings around the balance pin 13 as a fulcrum,
Along with this, the capstan screw 42 rises.
As a result, the wippen 46 is lifted by the capstan screw 42 and rotates clockwise in the drawing toward the inner side of the key 14. Also, hammer shank 18
Is pushed up by the jack 58 at the tip of the wippen 46, and rotates counterclockwise in the figure toward the front side of the key 14. When the wippen 46 and the jack 58 are further raised, the jack tail 58b of the jack 58 comes into contact with the regulating button 70, and the jack 58 is rotated counterclockwise in the figure with respect to the wippen 46. As a result, the upper end portion 58a of the jack 58 has the shank roller 1
Apart from 8a, the hammer shank 18 starts free movement.

When the hammer shank 18 having started the free movement is rotated substantially horizontally (that is, when it reaches the position shown by the broken line in the figure), it collides with the felt 20c on the lower surface of the hammer stopper 20 and moves upward. Is prevented from rotating. Furthermore, if you keep pressing the key 14 without pressing it,
Hammer 6 came back, as in the case of a grand piano
4 is received and supported by the back check 52. At this time, the tail 64b of the hammer 64 comes into contact with the back check 52. However, since the shape of the tail 64b is substantially the same as that of the hammer of the grand piano, the positional relationship between the tail 64b and the back check 52 is different. The timing is similar to that of a grand piano.
Further, since the movement of the hammer shank 18 is blocked when the hammer shank 18 is rotated substantially horizontally, the blocking position of the hammer shank 18 becomes the same as that of an actual grand piano without actually striking the strings with the hammer 64. , Touch feeling and continuous hitting are not impaired.

As described above, in the keyboard device 10 of this embodiment, the wippen 46 and the hammer shank 18 used for the action of the grand piano are arranged as the action load simulation member, and the back check 52 and the hammer shank are arranged. 18 is provided with a hammer stopper 20 that blocks the movement of the wippen 4 substantially horizontally.
6. Since the positional relationship between the hammer shank 18 and the back check 52 is almost the same as the positional relationship in the grand piano, there is a remarkable effect that a touch feeling and a continuous hitting property that are extremely close to those of an actual grand piano can be reproduced. .

Further, in this embodiment, since the hammer 64 is made of wood, the hammer 64 can be easily and inexpensively machined, while the tail 64b of the hammer 64 is made substantially the same as that of a grand piano hammer. Therefore, it is possible to obtain the same continuous hitting characteristic as a grand piano. Further, regarding the weight of the hammer 64, the weight of the hammer 64 is set to be the same for each of the three tones of the key 14, that is, the low tone range, the middle tone range, and the high tone range. Since the keys in the high range have a lighter touch than those in the low range, the touch feeling of the grand piano can be fully reproduced. Moreover, since only three types of parts having different weights are used as the hammer 64, the number of parts is small, and the hammer 64 can be easily processed, attached, and managed, and the cost can be significantly reduced.

Further, in this embodiment, since the key 14 and the action mechanism 16 are mounted on the metal chassis 12 having high strength, the wooden shelf board 22 is made thin (about 12 mm in this embodiment). A thick shelf like a grand piano (usually about 40 to 50 mm thick)
There is no need to put a keyboard device on top of. Therefore, by making the shelf plate 22 thin, there is an advantage that the degree of freedom in designing the case in which the keyboard device 10 is mounted can be increased. Further, since the metal chassis 12 has sufficient strength as compared with a wooden shelf board, there is an advantage that the action mechanism 16 is less likely to be misaligned due to transportation or the like.

Further, when the rubber switch (key-depression detecting switch) 30 is directly attached to a wooden reed such as a grand piano, the reed's dimensions may change due to changes in various conditions such as humidity and temperature. Although the positional relationship between the key 14 and the rubber switch 30 may change, which may interfere with the detection of the key pressing operation, the metal chassis 1 as in the above embodiment.
When the rubber switch 30 is mounted on the upper surface of the chassis 2, the dimensions of the chassis 12 do not easily change, so that such an inconvenience does not occur.

Although the embodiments have been described above, the present invention is not limited to the above embodiments and can be implemented in various modes. For example, when changing the weight of the wooden hammer 64, the lead 71 may be embedded inside the hammer 64 as shown in FIG. 4, instead of attaching the screws 66a and 66b as in the above-described embodiment.

Further, in the above embodiment, the hammer 6
Although 4 is made of wood, the hammer may be made of resin. Also in this case, since the hammer can be easily processed and is inexpensive, there is an effect that the cost of the product can be reduced as in the case of forming the hammer. still,
When formed of resin, the specific gravity is greater than that of wood, so the weight of the hammer can be easily changed by changing the volume of each hammer. Figure 5 (A)
An example of such a synthetic resin hammer is shown in (C). The hammer 72 in the low frequency range shown in FIG. 5 (A) has a larger head 72a than the hammer 74 for the mid frequency range shown in FIG. 5 (B), and therefore has a heavier weight than that for the mid frequency range. Further, the hammer 76 for the high frequency range shown in FIG. 5C has a head 76a which is larger than that of the hammer 74 for the middle frequency range.
Is smaller and therefore also lighter in weight. By changing the weight of the hammer for each tone range in this way, the same effect as that of the above embodiment can be obtained.

The initial pressure of the key can be made the same in each range by changing the position of the key lead and filling the key like a grand piano. Further, when the hammer is formed of wood or resin as in the above-mentioned embodiment, the weight of the hammer is not lightened stepwise for each range, but the weight is changed for each key,
The weight may be continuously reduced from the low range side to the high range side so that the weight is almost the same as that of an actual grand piano hammer. In this case, since the number of parts increases, the cost increases, but it is preferable in that the touch feeling of the grand piano can be reproduced more faithfully.

In the above embodiment, the wippen and hammer shank of an actual grand piano are used as members corresponding to the first rotating member and the second rotating member, but the present invention is not limited to this. Not what is done,
In order to further reduce the cost, not only the hammer,
The wippen and hammer shank may also be parts (simulated parts) imitated with resin or the like. In this case, in order to obtain a good touch feeling, it is preferable to set the shapes, weights and the like of these simulated parts so as to simulate the actual turning moment of the wippen or hammer shank.

In terms of cost, it is preferable to use a hammer (simulated component) formed of wood or resin as described above, but in some cases, a hammer (felt is used as a hammer used in an actual grand piano is used). It is also possible to use a hammer that has. In this case, although the cost is high, it is possible to obtain a touch feeling and a continuous hitting property that are closer to those of an actual grand piano by diverting the same parts as those of the grand piano.

Since the hammer does not actually strike the strings, the use of the hammer of the above embodiment simulating only the weight and the shape of the tail makes the touch feeling almost the same as that of an actual grand piano hammer. It is possible to obtain continuous hitting property. On the other hand, for the wippen and hammer shank, if you want to fully reproduce the touch feeling using simulated parts, it is necessary to function and operate almost the same as an actual piano, so it is necessary to faithfully simulate the whole parts, On the contrary, the manufacturing cost may be high. Therefore, when using the simulated parts, as in the above-described embodiment, the simulated parts are used for the hammer, and the actual grand piano parts are used for the wippen and the hammer shank. It is particularly preferable in that it can reproduce the touch feeling and continuous hitting characteristics that are almost the same as those of a grand piano.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a schematic configuration of a keyboard device for an electronic piano according to an embodiment.

FIG. 2 is a plan view schematically showing a positional relationship among a wippen rail, a shank rail, and a bracket.

FIG. 3 is a perspective view showing a hammer of the embodiment, (A)
Shows a hammer for the low range, (B) shows a hammer for the middle range, and (C) shows a hammer for the high range.

FIG. 4 is a perspective view showing a hammer of another embodiment.

FIG. 5 is a perspective view showing a hammer of another embodiment,
(A) shows a hammer for a low range, (B) shows a hammer for a middle range, (C) shows a hammer for a high range.

FIG. 6 is an explanatory diagram showing a keyboard device of a conventional technique.

FIG. 7 is an explanatory diagram showing a keyboard device of a conventional technique.

[Explanation of reference numerals] 10 ... keyboard device 14 ... key 16
..Action mechanism 18 ... hammer shank 20 ... hammer stopper 42 ... wippen 52 ... back check 64 ... hammer 64b ... tail

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[Procedure amendment]

[Submission date] August 6, 2002 (2002.8.6)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

A keyboard device for an electronic musical instrument according to claim 1, which is configured to achieve the above object, is an actuator for applying a load simulating an action to a key.
A keyboard device for electronic musical instruments equipped with an optional load simulation member.
And a key pressing detection means, and the action load simulation member
As a grand type acoustic piano
Wippen and hammer shank
The key is placed at the end of pressing the key.
The hammer tail on the tip of the hammer shank
A back check member is provided to support the hammer strike.
When the hammer shank of the upper is rotated substantially horizontally,
Is placed at a position that prevents the operation of the hammer shank,
Above wippen, hammer shank and back check
The positional relationship of the grand type acoustic piano
Position is almost the same as the position
It is made of resin, and the tail of the hammer is
The shape should be in a grand type acoustic piano.
The same shape as the hammer
Regarding weight, move the keyboard from the low range to the high range.
Divide into a plurality of range groups, and for each range group,
The hammer weight is the same and the weight of the hammer is in the high range.
Characterized by being configured to gradually lighten toward the side
And

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Delete

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Delete

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Delete

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Delete

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Delete

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

As described above, in the keyboard device according to the first aspect, the wippen, hammer shank and back check used in the grand piano are used in the electronic musical instrument, and further,
The positional relationship of these members than are substantially the same as the positional relationship in a grand piano, a touch feeling close to grand piano actual, it is possible to reproduce the sequentially touching capabilities. Moreover, since the hammer shank is prevented from moving when it is rotated substantially horizontally, the hammer shank has the same blocking position as that of the actual grand piano, and the touch feeling and the continuous hitting property are not impaired.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

Here, in the keyboard device according to the first aspect, there is a problem that the cost is increased if the parts used for the action of the grand piano are simply diverted. Also, in the first place, in an electronic keyboard instrument such as an electronic piano, since it is not necessary to strike a string with a hammer,
There is no need to use a hammer with felt as in the past.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

Therefore, in the keyboard device of the present invention , the hammer is made of wood or resin, and the shape of the tail of the hammer is made substantially the same as the hammer of a grand type acoustic piano. May be approximately the same as the weight of a hammer in a grand type acoustic piano .

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Delete

[Procedure Amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Delete

[Procedure Amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

However, if the weight of the hammer is made approximately the same as that of a hammer in a grand piano, it is preferable in terms of touch, but it is necessary to change the weight of the hammer for each key. The score increases. Therefore, the machining and mounting of the hammer and the management of parts become troublesome, and the cost increases.

[Procedure Amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

[0019] therein without significant loss of data pitch sense, yet in order to further reduce costs, as set forth in claim 1, with the formation of the hammer wood or resin, the hammer The shape of the tail is almost the same as that of a hammer in a grand type acoustic piano, and the keyboard is divided into a plurality of range groups from the low range side to the high range side, and the weight of the hammer is the same for each range group. Therefore, it is desirable that the weight of the hammer be gradually reduced toward the high frequency range.

[Procedure Amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

According to this structure, as described above, the hammer
The weight of is almost the same as a hammer in a grand piano
Compared to that, a subtle touch feeling becomes somewhat difficult to reproduce, by lightly in stages toward the weight of the hammer to the high-frequency side from the low-range side, it is low towards the treble side of the key Compared to the keys on the range, the keys are lighter to touch, and the touch feeling peculiar to a grand piano can be fully reproduced. Moreover, since the number of parts of the hammer is reduced, the cost can be significantly reduced accordingly.

Claims (5)

[Claims] 1. A keyboard device for an electronic musical instrument, comprising an action load simulating member for applying a load simulating an action to a key, wherein the action load simulating member is lifted by a key operated to depress the key. A first rotating member that rotates toward the side, a second rotating member that is pushed up by the rotating first rotating member, and rotates toward the front side of the key, and the second rotating member. A keyboard device for an electronic musical instrument, comprising: a hammer stopper that blocks the movement of the second rotating member that has started free movement away from the first rotating member. 2. The tip of the handle member of the second rotating member,
In addition to providing a head member whose tail shape is almost the same as a hammer of a grand type acoustic piano, the key is provided with a back check member that supports the tail of the head member at the end of key depression, and further, the hammer stopper is provided. The keyboard of the electronic musical instrument according to claim 1, wherein the handle member of the second rotating member is arranged at a position that prevents the movement of the second rotating member when the handle member is rotated substantially horizontally. apparatus. 3. A wippen and a hammer shank used for an action of a grand type acoustic piano are used as the action load simulating member in a keyboard device of an electronic musical instrument provided with an action load simulating member for applying a load simulating an action to a key. The key is provided with a back check member that supports the tail of the hammer provided at the tip of the hammer shank when the key is pressed, and the hammer stopper rotates the hammer shank substantially horizontally. Occasionally, the hammer shank is arranged at a position to prevent the movement of the hammer shank,
A keyboard device for an electronic musical instrument, characterized in that a hammer shank and a back check have a positional relationship substantially the same as that of a grand type acoustic piano. 4. The hammer is made of wood or resin, and the shape of the tail of the hammer is substantially the same as that of a grand type acoustic piano, and the weight of the hammer is the same as that of a grand type acoustic piano. The keyboard device for an electronic musical instrument according to claim 3, wherein the weight of the hammer is substantially the same as that of the hammer. 5. The hammer is made of wood or resin, and the tail shape of the hammer is substantially the same as that of a hammer of a grand type acoustic piano. Further, regarding the weight of the hammer, the keyboard has a low range. Side to the treble side, divided into a plurality of treble groups, the weight of the hammer is the same for each treble group, and the weight of the hammer is configured to be gradually lightened toward the treble side. The keyboard device for an electronic musical instrument according to claim 3, wherein