JPH07160251A - Action device of upright piano - Google Patents

Abstract

PURPOSE:To provide an action device of an upright piano which enables easy striking of fast strings, such as trill, with a relatively simple construction. CONSTITUTION:This action device of the upright piano has a hammer assembly 6 for striking a string and a wippen assembly 5 for jerking up a butt 26 in the lower part of this hammer assembly 6. The wippen body 5a of the wippen assembly 5 is disposed with a first jack 1 for jerking up the butt 26 and a second jack 2 for supporting the butt 26 respectively turnably via jack flanges. The lower part of the first jack 1 is provided with a projecting part 1a turned by coming into contact with a regulating button and the front end of the second jack 2 is provided with an elastic deforming part 2a which is elastically deformable by receiving the load from the butt 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an action device for a vertical piano, and more particularly to an action device for a vertical piano capable of playing a fast trill.

[0002]

2. Description of the Related Art An action device for a vertical piano is generally constructed as shown in FIGS. 8, 9 and 10. When a keyboard is pushed down, a capstan button 37 is attached to a center rail 8. The assembly 5 is pushed up, and the jack 41 mounted on the wippen assembly 5 via the jack flange 20 pushes up the butt 26 of the hammer assembly 6.

At this time, the hammer hits the string 38, but immediately before that, the jack 41 pushes the regulating button 3
When hitting 9, the tip of the jack 41 separates from the bat 26,
The hammer strikes the string 38 with its inertial force.

At this time, the butt 26 is pulled back by the action of the butt spring 35 and the pullback action of the bridle tape 29 and the bridle wire 15, and the back check 14 on the wippen assembly 5 causes the bat catcher 28 to move. Catch and stop.

When the keyboard is released to return to the original position, the capstan button 37 starts to descend and the whip pen assembly 5 starts to descend due to its own weight, and the jack 41 descends while the jack spring is descending. The action of 42 tries to return to the original position. And
When the keyboard returns to about 90% position, jack 41
When the tip of the key sneaks under the bat 26 and the keyboard is completely returned to its original position, the hammer hits the hammer rail 9 and stops, as shown in FIG.

[0006]

As described above, in the action device of the vertical piano, when the keyboard is pushed and released, the tip of the jack 41 is not moved to the bottom of the bat 26 until the keyboard returns to the position of about 90%. When you press and release the keyboard, the keyboard will move to about 90
The next string striking is not possible until it returns to the position of%.

For this reason, in the conventional vertical piano, when a trill is played, for example, the string can be struck only about 7 to 8 times per second, and like a grand piano, about 13 to 8 per second. There was a problem that I couldn't do 14 fast trills.

The present invention has been made in view of the above points, and an object thereof is to provide an action device for a vertical piano having a relatively simple structure and capable of easily striking a fast string such as a trill. And

[0009]

In order to achieve the above object, an action device of a vertical piano of the present invention is a hammer assembly for striking a string and a wippen assembly for pushing a butt at the bottom of the hammer assembly from below. In an action device of a vertical piano equipped with
In the main body of the whip pen assembly, a first jack that pushes up the bat and a second jack that supports the bat are rotatably arranged through the jack flange and hit the regulating button at the bottom of the first jack. The protrusion of the second jack is provided, and the tip of the second jack is provided with an elastic deformable portion that can be elastically deformed by receiving the load from the bat, and when the keyboard is pushed down and returned to about half, the second The elastically deformable portion of the jack supports the bat from below, and the tip of the first jack is configured to be able to enter below the bat.

[0010]

[Action / Effect] With the action device having such a configuration,
When the keyboard is pushed down, the wippen assembly rises, and the first jack pushes up the bottom of the bat with its tip.

At this time, the hammer assembly vibrates strongly toward the string side, and immediately before the hammer head hits the string, the lower projection of the first jack 1 hits the regulating button, whereby the first jack moves backward. The hammer head of the hammer assembly hits the string by its inertial force by rotating it so that its tip comes off the lower part of the bat.

After the hammer head hits the string and the keyboard is pushed down deeply, the tip of the first jack is disengaged from the lower part of the bat, and the bat is supported with the elastically deformable portion of the second jack elastically deformed. It is in.

When the keyboard is returned up to about half from this state, the wippen assembly is lowered, and similarly, the positions of the first and second jacks are also lowered a little, and the protruding portion of the first jack is separated from the regulating button. Since the bat is supported from below by the elastically deformable portion of the second jack, the tip of the first jack enters the bottom of the bat by the action of the jack spring. In other words, at this time, the elastically deformable portion of the second jack reduces the load received from the bat, so the deformation of the elastically deformable portion is canceled and the bat is supported, and the tip positions of the first jack and the second jack are substantially the same. In the same way, the tip of the first jack 1 can enter under the bat.

In this way, when the keyboard is returned up to about half, the tip of the first jack can sneak under the butt of the hammer assembly. , The first jack rises together with the whipen assembly, pushes up the bat, swings the hammer assembly to the string side, and can strike a string.

Therefore, even when the keyboard return is about half, the next string can be struck like a grand piano.
You can play 13 to 14 fast trills per second.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an action device for a vertical piano. Reference numeral 5 is a wippen assembly, which is supported by the center rail 8 via a wippen flange 19. Reference numeral 6 denotes a hammer assembly, which fixes a hammer head 24 on a butt 26 via a hammer shank 25 and a center rail 8 via a butt flange 32.
Mounted swingably on top. A hammer rail 9 is horizontally arranged behind the hammer shank 25, and a damper stop rail 1 is provided behind the damper assembly 7.
0 is arranged horizontally.

The whip pen assembly 5 is shown in FIGS.
As shown in, a whippen heel 16 having a whippen heel cross 17 attached to the lower end of the whippen main body 5a is provided.
On the upper part of the whip pen body 5a, the bridle wire 15,
The back check 14 is attached. Further, the whip pen flange 19 is attached to the main pen 5a via the center pin 22, the upper portion of the whip pen flange 19 is attached to the center rail 8 with the screw 21, and the damper spoon 18 is provided in the vicinity thereof.

Further, the first jack 1 and the second jack 2 are swingably supported on the whip pen main body 5a via a jack flange 20. The first jack 1 and the second jack 2 are pivotally supported adjacent to each other by the same shaft, and the first jack 1 is formed in a rod shape so as to push up the bat 26, like the conventional jack, and the regulating button 39 is provided under the rod. A protruding portion 1a that hits is provided.

On the other hand, a frame-shaped elastically deforming portion 2a is provided at the tip of the second jack 2 so as to surround the tip of the first jack 1. Normally, the tip position of the first jack 1 and the second jack 2 are provided. The tip positions of the elastically deforming portions 2a are the same. The tips of the first jack 1 and the second jack 2 are elastically deformable portions 2
It is possible to swing independently only within a range where it can move within a.

In the elastically deformable portion 2a at the tip of the second jack 2, the keyboard is pushed down deeply, and after hitting the string, the bat 2 is pushed.
When the hammer assembly 6 hits the lower portion of the hammer assembly 6 and the weight of the hammer assembly 6 is applied to the upper portion of the hammer assembly 6, the hammer assembly 6 is bent downward and elastically deformable. Also, when the keyboard is returned to about 50%, and when the load applied to the whip pen main body 5a as the descent of the whip pen main body 5a is reduced, the elastically deformable portion 2a returns to its normal shape by its elastic restoration, and the jack spring 13 The action allows the tip of the first jack 1 to enter the lower side of the bat 26.

Two jacks are provided between the lower parts of the first jack 1 and the second jack 2 and the main body 5a of the whip pen.
Jack springs 13 for rotating and urging the jack springs to the right side (the direction in which the tips of both jacks are inserted under the butt 26) are provided.

As shown in FIG. 4, in the hammer assembly 6, a hammer shank 25 is mounted on a butt 26, a hammer head 24 having a hammer felt 23 at the tip is mounted on the hammer shank 25, and a bat flange 32 is used to butt the bat. 26 is screwed to the upper part of the center rail 8.

Further, the butt 26 has a butt spring 3
5, the butt spring cord 33, the butt spring pin cord 36, and the butt plate 34 are attached, and the butt felt 31 and the butt skin 30 are attached to the lower part thereof. Further, a catcher 28 is provided at the rear of the bat 26 via a catcher shank 27, and the catcher 28 is connected to the bridle wire 15 by a bridle tape 29.

Further, the magnet 3 is fixed to the upper portion of the butt 26, and the second magnet 4 is fixed to the rail 43 so as to face the magnet 3 so that the same poles face each other. The pair of magnets 3 and 4 serve as the above-mentioned urging means, and when the keyboard is depressed to strike a string, the hammer assembly 6 is pushed back to the hammer rail 9 side immediately after the strike, and the catcher 28 backchecks 14 It works so that you can catch it well.

38 is a string, 11 is a regulating rail, 12 is a jack stop rail, 40 is a damper rod, and a regulating button 39 is attached to the regulating rail 11.

Next, the operation of the action device having the above configuration will be described.

When the keyboard is not operated, the action device is in the state shown in FIG. As you hold down the keyboard,
First, the damper assembly 7 is separated from the string 38, the capstan button 37 is raised, the wippen assembly 5 is raised, and the first jack 1 is butt 26 at its tip.
Push up the bottom of.

At this time, the hammer assembly 6 swings strongly toward the string 38 side, and immediately before the hammer head hits the string 38, the lower projection 1a of the first jack 1 hits the regulating button 39, whereby The first jack 1 rotates rearward (on the right side in the figure) and the tip thereof is the bat 2.
The hammer head of the hammer assembly 6 hits the string 38 by its inertial force.

After the hammer head hits the string 38, the hammer assembly 6 is pulled back to the right side of the figure by the action of the butt spring 35 and the action of being pulled by the bridle wire 15 of the wippen assembly 5 via the bridle tape 29. Then, the catcher 28 catches the back check 14 and stops (FIG. 6). FIG. 6 shows a state in which the keyboard is pressed in this way to strike a string and then the keyboard is pressed down as it is.

When the hammer assembly 6 is pulled back, the elastically deformable portion 2a at the tip of the second jack 2 comes into contact with the lower portion of the butt 26 and exerts a force opposite to the direction in which it is returned. Magnets 3 and 4 push the hammer assembly 6 in the returning direction,
Is elastically deformed favorably, so that the catcher 28 can be reliably returned to the position where the back check 14 can be caught.

Then, when the keyboard is returned up to about 50% from this state, as shown in FIG. 7, the capstan button 3
7 、 Whippen assembly 5 descends, and first,
The positions of the second jacks 1 and 2 are also lowered a little, and the protrusion 1a of the first jack 1 separates from the regulating button 39.

Therefore, the first jack 1 is rotated toward the butt side by the force of the jack spring 13 on the lower side thereof.
Since the bat 26 is biased and is supported by the elastically deformable portion 2a of the second jack 2 from the lower side, the tip portion thereof enters the lower side of the bat 26. That is, at this time, since the load that the elastically deformable portion 2a of the second jack 2 receives from the bat 26 is reduced, the deformation is canceled and the bat is supported, and the tip positions of the first jack 1 and the second jack 2 are changed. Since they are substantially the same, the tip portion of the first jack 1 can enter the lower side of the bat 26 (FIG. 7).

As described above, when the keyboard is returned to about 50%, the tip of the first jack 1 can sneak under the butt 26 of the hammer assembly 6, so that the keyboard is returned to about 50%. When it is pushed down again, the first jack 1 rises together with the wippen assembly 5, the butt 26 is pushed up, the hammer assembly 6 is swung to the string side, and string striking can be performed.

Therefore, even when the keyboard return is about 50%, the next string can be struck like a grand piano, and therefore even a vertical piano has the same 1
You can play 13 to 14 fast trills per second.

The pair of magnets 3 and 4 is provided to surely push the hammer assembly 6 backward so that the catcher 28 can catch the back check 14 after hitting the string. Alternatively, it is possible to suspend a leaf spring on the damper stop rail 10 and to cause the leaf spring to push back the butt 26 to the position shown in FIG. 6 after striking the string.

[Brief description of drawings]

FIG. 1 is a perspective view of an action device of a vertical piano showing an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of the wippen assembly 5.

FIG. 3 is an enlarged perspective view of the wippen assembly 5.

FIG. 4 is an enlarged perspective view of the hammer assembly 6.

FIG. 5 is a side view of the action device in a non-operated state.

FIG. 6 is a side view of the action device when the keyboard is pushed down deeply.

FIG. 7 is a side view of the action device when the keyboard is returned to about 50%.

FIG. 8 is a perspective view of a conventional vertical piano action device.

FIG. 9 is a side view of a conventional action device.

FIG. 10 is an enlarged perspective view of a conventional wippen assembly.

[Explanation of symbols]

 1-First Jack, 1a-Protrusion, 2-Second Jack, 2a-Elastic Deformation Part, 3,4-Magnet (Biasing Means), 5-Whipen Assembly, 5a-Whipen Main Body, 6-Hammer Assembly, 26-bat.

Claims (2)

[Claims] 1. A vertical piano action device comprising a hammer assembly for striking a string and a wippen assembly for pushing a butt at the bottom of the hammer assembly from below, wherein the wippen body of the wippen assembly includes: A first jack that pushes up the bat and a second jack that supports the bat are rotatably arranged through a jack flange, and a protrusion that rotates by hitting a regulating button is provided under the first jack. An elastically deformable portion that is elastically deformable under the load from the bat is provided at the tip of the second jack. When the keyboard is pushed down and returned to about half, the elastic deformation of the second jack is provided. A part supports the bat from below and allows the tip of the first jack to enter under the bat. Vertical piano action apparatus. 2. The vertical piano action device according to claim 1, further comprising an urging means for urging the hammer assembly so as to return the hammer assembly to the rear side immediately after the keyboard is depressed to strike a string.