JP3239226B2 - Piano pedal mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pedal mechanism for a piano including a shift pedal, a damper pedal, and a sostenuto pedal which are operated by being depressed.

[0002]

2. Description of the Related Art As is well known, grand pianos, upright pianos, automatic pianos, and other pianos that strike a string by an action mechanism that operates in response to a key press operation on a keyboard change the playing volume or produce a performance effect. To enhance the sound, a muffler mechanism, a damper mechanism, and a sostenuto mechanism are provided, and these mechanisms are selectively operated by a pedal mechanism (for example, Japanese Utility Model Publication No. 57-55661, Japanese Patent Application Laid-Open No. 2-48695, and JP-A-2-8897,
JP-B-58-25426, etc.).

FIG. 5 is a configuration diagram showing a conventional example of a grand piano equipped with such a weak sound mechanism, a damper mechanism, a sostenuto mechanism, and its pedal mechanism. The mute mechanism is
This enables a weak tone performance with a lower volume than that of a normal performance. When the shift pedal 1 is depressed, all action mechanisms (not shown) are arranged together with the keyboard 2 in the direction in which the keyboard 2 is arranged (in a direction perpendicular to the paper). To reduce the number of strings 3 struck by a hammer (not shown) to reduce the performance sound.

The damper mechanism 4 normally blocks free vibration of the string 3 with a damper 5. When a key is depressed, a damper lever 8 is operated in conjunction with the keyboard 2 so that a hammer (not shown) moves the string 3. Immediately before hitting, the damper 5 is separated from the string 3 to enable its vibration. When the damper pedal 6 is depressed, the lifting rail 7 rises and the damper levers 8 of all the damper mechanisms 4 are pushed up, so that the damper mechanism 4 operates irrespective of the key-pressing operation. Is configured to be released.

[0005] The sostenuto mechanism 9 is for sustaining a certain arbitrary performance sound for a long time. When the sostenuto pedal 10 is depressed while a certain arbitrary keyboard 2 is depressed, the sostenuto rod 11 is rotated. A moving shelf 12 provided on the rod 11 pushes up a tab lip 14 provided on a damper block 13 of the damper mechanism 4 to hold the damper 5 at a raised position separated from the string 3. Therefore, even when the keyboard 2 returns, the damper mechanism 4 keeps the state in which the strings 3 are released, and the strings 3
Vibration can be maintained.

As described above, the conventional sostenuto mechanism 9
Was to sustain only a specific sound for a long time during the performance. On the other hand, the sostenuto mechanism disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2-48695 (the same applies to Japanese Patent Application Laid-Open No. 2-8897) obtains a sostenuto function for each predetermined sound range. According to the sostenuto mechanism, it has a feature that the bass sound can be emphasized and the clarity of the middle and treble sounds can be relatively emphasized.

This will be described in more detail with reference to FIG.
The sostenuto rod 11 which was conventionally one is divided into two so as to be composed of a sostenuto rod 11A for the middle and treble range and a sostenuto rod 11B for the low range. A sostenuto pedal 10 for the middle and high ranges and a sostenuto pedal 15 for the low range are arranged, and the sostenuto rods 11A, 11B and the sostenuto pedal 10,
15 are connected by rods 16 and 18, levers 17 and 20, and links 21 and 22, respectively. Further, a coupler 19 is provided in order to make the middle and high range sostenuto pedal 10 function as a full range sostenuto pedal. During normal performance, any key 2
In order to hold the string 3 corresponding to the open state and maintain the sound, depress the keyboard 2 in the same manner as in the prior art, and then depress the middle and high range sostenuto pedal 10 while maintaining this state. You just need to do it. Then, the rod 16 is pushed up in conjunction with the middle and high range sostenuto pedal 10, and the lever 17 is rotated counterclockwise. At this time,
The rod 18 of the low range sostenuto pedal 15 is simultaneously raised by the coupler 19, and the lever 20 is rotated in the same direction. When these levers 17 and 20 are rotated, the rotation is made via the links 21 and 22 to each of the sostenuto rods 1.
1A and 11B, these rods 11A,
11B is rotated in the direction of the arrow to move the moving shelves 12A, 12B.
Supports the tab lip 14 of the damper mechanism 4 corresponding to the keyboard 2 on which the key is pressed, from below, and holds the tab lip 14 at the raised position. For this reason, even if the keyboard 2 that has been depressed is returned while the middle and high range sostenuto pedal 10 is being depressed, the damper mechanism 4 does not return and the string 3 is held in the released state. Therefore, the string 3 corresponding to the keyboard 2
Is maintained until the sostenuto pedal 10 for the middle and high range returns.

FIG. 6 is a partially cutaway front view of the coupler 19 which enables the rods 16 and 18 to move together. The coupler 19 has insertion holes 23 and 24 through which the rods 16 and 18 slidably penetrate, and the nut 19 provided in the rod 16 for medium and high sounds restricts the downward movement, while The upward movement is regulated by a nut 26 provided on the sound range rod 18. For this reason,
When the middle and high range rod 16 is raised by the depression operation of the high range sostenuto pedal 10, the low range rod 18 is also pushed up by the coupler 19. on the other hand,
When the low range sostenuto pedal 15 is depressed, only the low frequency rod 18 operates and the middle and high frequency range rod 16 does not operate.

Further, regardless of the key depression operation, the damper pedal 6 is depressed to operate all the damper mechanisms 4, and
When the low range sostenuto pedal 15 is depressed in a state where all the strings 3 are released, only the low range rod 18 moves upward to rotate the lever 20, thereby rotating the low range sostenuto rod 11B. Move. Therefore, at this time, the moving shelf 12B of the low range sostenuto rod 11B is connected to the tab lip 14 of the damper mechanism 4 in the low range.
Is supported from below and held in the raised position, releasing only the bass string. Therefore, when the low range sostenuto pedal 15 is depressed, the damper mechanism 4 corresponding to the low range string does not return, and the low range string vibrates.

During performance, when a string corresponding to an arbitrary one of the keys corresponding to the strings in the low-pitched portion is to be kept open and the sound is desired to be sustained, the key is depressed in the same manner as in the prior art. The key operation may be performed, and then the sostenuto pedal 15 for the low frequency range may be depressed while maintaining this state. Then, the tab lip 14 of the damper mechanism 4 corresponding to the key depressed in conjunction with the low range sostenuto pedal 15
12B is supported from below by the moving shelf 12B and held at the raised position. For this reason, even if the keyboard which has been depressed is restored with the bass range sostenuto pedal 15 depressed, the damper mechanism 4 does not return, and the string is held in the released state. Therefore, the vibration of the string corresponding to the keyboard is continued until the low range sostenuto pedal 15 returns.

[0011]

In the above-described conventional pedal mechanism, the shift pedal 1 is mounted on the front surface of a pedal box 28 provided at the lower portion of the instrument body as shown in FIGS. , Sostenuto pedal 1 for high range
0 and the damper pedal 6 are arranged in parallel from the left, and the low range sostenuto pedal 15 is arranged on the left side. Therefore, there is a problem that the operability of these pedals, especially the shift pedal 1 and the low range sostenuto pedal 15 is poor. there were. In other words, when a performance is expressed while operating the pedal mechanism in the pianissimo (pp) sound, the shift pedal 1 whose main purpose is to change the timbre may be used. In addition to this, when using the low range sostenuto pedal 15, both pedals 1 and 15 are operated with the left foot (the right foot normally operates the damper pedal). For this reason, the shift pedal 1 must be depressed with the heel of the left foot, and the sostenuto pedal 15 for the low frequency range must be depressed with the tip of a toe. The operability of the shift pedal 1 which must be remarkably deteriorated. In the simultaneous operation, since both the toe and the heel become the emphasis points, the left foot is not stable, and the sostenuto pedal 15 is only ON and OFF, so there is no problem in the performance itself. However, there is also a problem that if the feet are distracted, it is not possible to concentrate on the performance.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to enable easy and reliable operation of a pedal and to identify a pedal by a foot. It is an object of the present invention to provide a piano pedal mechanism which can be easily operated and can prevent erroneous operation.

[0013]

According to a first aspect of the present invention, a shift pedal, a low-range sostenuto pedal, a middle and high-range sostenuto pedal, and a damper pedal are arranged in parallel from the left. is there.

According to a second aspect of the present invention, a shift pedal, a low range sostenuto pedal, a middle and high range sostenuto pedal, and a damper pedal are arranged in order from the left, and the front ends of the shift pedal and the low range sostenuto pedal are mutually connected. It is one that can be operated at the same time by bringing them close to each other.

According to a third aspect of the present invention, a shift pedal, a low-range sostenuto pedal, a middle and high-range sostenuto pedal, and a damper pedal are arranged in parallel from the left.
The high range sostenuto pedal is arranged at a higher position than the low range sostenuto pedal.

According to a fourth aspect of the present invention, a shift pedal, a low-range sostenuto pedal, a middle and high-range sostenuto pedal, and a damper pedal are arranged in order from left to right.
The high range sostenuto pedal is arranged behind the low range sostenuto pedal.

According to a fifth aspect of the present invention, a shift pedal, a low-range sostenuto pedal, a middle and high-range sostenuto pedal, and a damper pedal are sequentially arranged in parallel from the left.
The high range sostenuto pedal is provided with a protruding portion protruding toward the low range sostenuto pedal, and a part of the protruding portion is arranged above the low range sostenuto pedal.

[0018]

In the pedal mechanism for a piano according to the present invention, the sostenuto pedal for the low range and the sostenuto pedal for the middle and high ranges are arranged side by side, so that the pedal can be easily depressed by the toe of the left foot. When the shift pedal and the front end of the low range sostenuto pedal are brought close to each other, simultaneous operation of both pedals is facilitated. If the middle and high range sostenuto pedals are arranged at a higher position than the low range sostenuto pedals, these pedals can be easily identified and operation errors can be prevented. Positioning the front ends of the middle and high range sostenuto pedals behind the low range sostenuto pedal facilitates identification of these pedals and prevents operation errors. When a protruding part is provided on the mid and high range sostenuto pedal and a part of this protruding part is arranged above the low range sostenuto pedal,
The sostenuto function can be obtained over the entire sound range simply by depressing the sostenuto pedal for the middle and treble ranges.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 is a plan view showing an embodiment in which the present invention is applied to a pedal mechanism of a grand piano, and FIG. 2 is a front view of the same mechanism. 5 and 7 in the drawings.
The same components as those of the conventional pedal mechanism shown in FIG. In these figures, in this embodiment, the shift pedal 1, the low-range sostenuto pedal 15, the middle and high-range sostenuto pedals 10, and the damper pedal 6 are arranged in parallel in this order from the left on the front surface of the pedal box 28. 1 and the front end of the low range sostenuto pedal 15 are brought close to each other, and the shift pedal 1, the low range sostenuto pedal 15 and the damper pedal 6 are arranged at substantially the same height, and the middle and high range sostenuto pedal 10 is moved. It is arranged at a position higher by H than the low range sostenuto pedal 15 and the tip of the middle and high range sostenuto pedal 10 is disposed at a distance D behind the low middle range sostenuto pedal 15. . Each of the pedals 1, 6, 10, 15
The damping mechanism, damper mechanism, and sostenuto mechanism operated by the controller are exactly the same as the damping mechanism, damper mechanism, and sostenuto mechanism in the conventional piano shown in FIG.

Thus, in the pedal mechanism having such a configuration, the shift pedal 1, the low-range sostenuto pedal 15, the middle and high-range sostenuto pedals 10, and the damper pedal 6 are arranged in parallel on the front surface of the pedal box 28. At the same time, the front ends of the shift pedal 1 and the low range sostenuto pedal 15 are close to each other, so that when the shift pedal 1 and the low range sostenuto pedal 15 are simultaneously operated with the left foot, the heel is placed on the floor similarly to a normal piano. The two pedals 1 and 15 can be simultaneously operated with a toe while the pedals are attached. Therefore, pedal operation is as stable and easy as a normal piano, and especially when a woman wears high heels to perform, pedaling of the shift pedal 1 can be easily performed, and the range of performance expression can be expanded. Also,
Since the height of the sostenuto pedal 10 for the middle and treble ranges and the height of the sostenuto pedal 15 for the low range are made different, it is easy to discriminate these two pedals and it is possible to prevent operation errors. Similarly, since the front end of the middle and high range sostenuto pedal 10 is located behind the low range sostenuto pedal 15, it is easy to discriminate these two pedals from this point and to prevent operation errors. Can be.

In this embodiment, in order to obtain the sostenuto function over the entire sound range only by depressing the middle and high range sostenuto pedal 10, the coupler 1 shown in FIG.
9 and nuts 25 and 26 may be provided.

FIG. 3 is a plan view showing another embodiment of the present invention, and FIG. 4 is a front view. In this embodiment, the front end portion operated by the foot of the middle and high range sostenuto pedal 10 is bent approximately 90 ° to the left so as to extend above the low range sostenuto pedal 15 and close to the shift pedal 1. At the same time, the sostenuto pedal 15 for the low frequency range is disposed behind the front end.

In such a configuration, the same effect as in the above embodiment can be obtained. Further, in this embodiment, since the low range sostenuto pedal 15 can be operated by depressing the middle and high range sostenuto pedal 10, the middle and high range sostenuto pedal 10 functions as a full range sostenuto pedal. I do. Further, even without providing the coupler 19 and the nuts 25 and 26 shown in FIG. 6, the sostenuto function can be obtained over the entire sound range only by depressing the middle and high range sostenuto pedal 10. That is, the middle and high range sostenuto pedal 10 functions as a full range sostenuto pedal. Also, a sostenuto pedal 10 for the middle and treble range.
Is arranged close to the shift pedal 1 and behind the front end of the low-range sostenuto pedal 15, pedal operation is easy. For example, the middle and high range sostenuto pedal 10 and the low range sostenuto pedal 15 can be selectively used simply by stabilizing the left and right heels firmly on the floor and moving the toe back and forth. In addition, all independent pedal operations except the damper pedal 6 can be performed with only the left foot, and each pedal function can be synergistically operated by operating both feet, adapting to a wide variety of works from classic to modern, With the mechanism, it is possible to express the sound that could not be fulfilled.

Note that the sostenuto pedal 1 for the middle and treble ranges
0 may be a projection by attaching a separate member to a normal substantially I-shaped pedal. Furthermore, if the pedaling force required for the depressing operation of the sostenuto pedal is equal to the pedaling force required for the depressing operation of the shift pedal or the loud pedal, similarly to a normal piano, when the sostenuto pedal and the shift pedal are operated simultaneously, The left foot requires approximately twice the treading force of the right foot. An imbalance in the treading power required for the left and right feet may hinder the performance, which is not preferable. Therefore, it is preferable that the pedaling force required for the depressing operation of the middle and high range sostenuto pedal 10 and the low range sostenuto pedal 15 be minimized as much as possible, and to balance the pedaling forces required for the left and right feet. The sostenuto pedal has the same function as the on / off switch, and no matter how small the pedaling force, the operation is not adversely affected.

Although all of the above embodiments have been described as applied to the pedal mechanism of a grand piano, it is needless to say that the present invention can also be applied to the pedal mechanism of an upright piano. The above-mentioned pedals may be similarly arranged in parallel at the lower part of the front surface.

[0026]

As described above, the pedal mechanism of the piano according to the present invention comprises a shift pedal, a low range sostenuto pedal, a middle and high range sostenuto pedal, and a damper pedal arranged in parallel in this order from the left. Therefore, the shift pedal and the low range sostenuto pedal can be depressed with the left toe, and pedaling is easy. In addition, since the front ends of the shift pedal and the low range sostenuto pedal are close to each other, simultaneous operation of both pedals can be further facilitated, and the playability can be improved. Further, in the present invention, the sostenuto pedal for the middle and high ranges is arranged at a position higher than the sostenuto pedal for the low range, and the tip of the sostenuto pedal for the middle and high ranges is arranged behind the sostenuto pedal for the low range.
The two pedals can be easily identified, and erroneous operations can be prevented from being reduced. Further, according to the present invention, since the protruding portion is provided on the middle and high range sostenuto pedal, and a part of the protruding portion is disposed above the low range sostenuto pedal, only the depressing operation of the middle and high range sostenuto pedal is performed. Thus, a sostenuto function can be obtained over the entire sound range.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment when the present invention is applied to a pedal mechanism of a grand piano.

FIG. 2 is a front view of the mechanism.

FIG. 3 is a plan view showing another embodiment of the present invention.

FIG. 4 is a front view.

FIG. 5 is a configuration diagram showing a damper mechanism, a sostenuto mechanism, and a pedal mechanism of a conventional grand piano.

FIG. 6 is a partially cutaway front view of the coupler.

FIG. 7 is a plan view showing an arrangement of pedals.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shift pedal 2 Keyboard 3 String 4 Damper mechanism 6 Damper pedal 9 Sostenuto mechanism 10 Sostenuto pedal for middle and high frequency ranges 15 Sostenuto pedal for low frequency range 28 Pedal box

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Satoshi Inoue 10-1 Nakazawa-cho, Hamamatsu-shi, Shizuoka Prefecture Inside Yamaha Corporation (56) References JP-A-5-257464 (JP, A) 90577 (JP, U) Patent 2699460 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) G10C 3/26

Claims (5)

(57) [Claims] 1. A piano pedal mechanism wherein a shift pedal, a low range sostenuto pedal, a middle and high range sostenuto pedal, and a damper pedal are arranged in parallel from the left in order. 2. A shift pedal, a low-range sostenuto pedal, a middle and high-range sostenuto pedal, and a damper pedal are arranged in parallel in order from the left, and the front ends of the shift pedal and the low-range sostenuto pedal are brought close to each other and simultaneously. Operable piano pedal mechanism. 3. A shift pedal, a low range sostenuto pedal, a middle and high range sostenuto pedal, and a damper pedal are arranged in parallel from the left, and the middle and high range sostenuto pedals are positioned higher than the low range sostenuto pedal. The pedal mechanism of the piano, characterized by being arranged in. 4. A shift pedal, a low-range sostenuto pedal, a middle and high-range sostenuto pedal, and a damper pedal are arranged in parallel from the left in order from the left, and a front end of the middle and high-range sostenuto pedal is arranged from the low-range sostenuto pedal. The pedal mechanism of the piano, which is also arranged at the rear. 5. A shift pedal, a low-range sostenuto pedal, a middle and high-range sostenuto pedal, and a damper pedal are arranged in parallel from the left in order from the left. A pedal portion for a piano, wherein a portion of the protrusion portion is provided above the low range sostenuto pedal.