JPS595913B2 - keyboard instrument - Google Patents

Description

[Detailed description of the invention] The present invention relates to a keyboard instrument such as a piano.

For example, as a conventional grand piano, the first
A device configured as shown in the figure is known.

That is, a tuning pin 3 is embedded in a pin plate 2 attached to the lower surface of one end 1a of a frame-shaped metal frame 1, passing through the frame 1, and on the other hand, a tuning pin 3 is installed on the upper surface of the other end Ib of the frame 1. A frame pin 4 is installed, and a string 5 is stretched between the frame pin 4 and the tuning pin 3, and in the middle of the string 5, a cabo dust rover 6 made of a part of the frame 1, and a string 5 are connected. A space between the cabo dust rover 6 and one of the hooks 9 is partitioned by two hooks 9 and 10 driven into the bridge 8 provided on the upper surface of the soundboard T arranged on the lower side of the frame 1. It is considered to be an effective vibration sounding section. When the well-known piano action mechanism is activated in response to the pressing operation on the keyboard, the damper 11 is raised and separated from the strings 5, and the shank rail 12 disposed below the pin plate 2 is moved upward. A hammer shank 14, whose one end is rotatably attached to the upper surface via a shank flange 13, rotates clockwise.
The string 5 is struck by a hammer 15 attached to the tip of the string 5 to generate sound. Note that when the pressing operation on the keyboard is released, the damper 11 descends and contacts the string 5 to stop its sound, and the hammer 15 rotates counterclockwise together with the hammer shank 14, thus all mechanisms returns to its original resting state. However, in such a conventional grand piano, one hammer 15 is moved to one string 5 by pressing one key.
Since this string 5 is made to vibrate and produce sound by hitting the
There was a limit to the tones that could be obtained.

This invention was made in view of the above circumstances, and aims to provide a keyboard instrument that can produce a tone different from conventional ones, and its structural features are as follows: A sub-striking body is provided separately from the main striking body that strikes the string, and this sub-striking body is connected to the main striking body so as to move integrally, and a sounding body other than the string is provided in correspondence with this sub-striking body. The point is that

Each embodiment of the present invention will be described below with reference to the drawings. First, one embodiment will be described with reference to FIGS. 2 and 3.

In order to avoid complication of explanation, the same parts as those of the conventional example shown in FIG. In this embodiment, another hammer 16 (hereinafter referred to as the second hammer) is located at a predetermined position in the middle of the hammer shank 14, and a hammer 15 (hereinafter referred to as the first hammer) attached to the tip of the hammer shank 14. mounted in parallel. Also, this second
A band-shaped sounding body 17 made of metal is provided corresponding to the hammer 16. This sounding body 17 has one end attached to the lower surface of the pin plate 2 with a screw 18 and is disposed so as to be parallel to the string 5 as a whole, and the other end is a free end and is attached to the second hammer 16. The sounding body 17 is located above the head of the second hammer 16 in the resting position.
The distance is set to correspond to the distance from the head of the first hammer 15 at the rest position to the string 5, that is, the string-striking distance. Further, the second hammer 16 and the corresponding sounding body 17 may be provided to correspond to all the keys, or for example, to correspond to each key in at least one of the low, middle, and treble ranges. The second
The number and arrangement of the hammers 16 and the corresponding sounding bodies 17 can be arbitrarily selected. Next, to explain the operation of the above-mentioned component device, when one key is pressed, the hammer shank 14 corresponding to this key is pressed.
rotates clockwise, and as a result, the first hammer 15 strikes the string 5 and causes the string 5 to vibrate and sound as before, and the second hammer 16 attached to the same hammer shank 14 acts as a sounding body. Hit 17 and this sounding body 17
It vibrates and sounds at the same time.

Note that when the pressing operation on the key is released, damper 1
1, the vibrating sound of the string 5 is stopped as in the conventional case, while the sounding body 17 continues to vibrate and attenuates naturally. In this way, when one key is pressed, the string 5 corresponding to this key and the sounding body 17 other than the string vibrate at the same time, and the sound obtained is a composite sound, which is different from the conventional one. Produces a vine tone.

In addition, in this case, the second hammer 16 is attached to the same hammer shank 14 as the first hammer 15, so that they move together, so there is no discomfort when touching the key, especially when the key is pressed. Not only is there no risk of this occurring, the timing of the strikes of both hammers 15 and 16 can always be accurately matched through adjustment, and a reproducible sound effect can be obtained.

Next, a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. In order to avoid complication of explanation, the same parts as those of the first embodiment shown in FIG. In this second embodiment, a swing rail 19 is disposed below the pin plate 2 along its length. The swing rail 19 is swingably attached at its widthwise central portion via a shaft 20 to a support member 22 attached to a predetermined position on the lower surface of the pin plate 2 with a screw 21. One end of the metal band-shaped sounding body 17 is attached to the lower surface of one end in the width direction of the swing rail 19 with a screw 18.
The other end of the hammer 7 is a free end and is positioned above the second hammer 16 as in the first embodiment. One end of a leaf spring 23 is attached to a predetermined position on the lower surface of the pin plate 2 by a screw 24, and due to the force of this leaf spring 23, the swing rail 19 is always moved clockwise together with the sounding body 17. A felt 25, which is biased and affixed to the lower surface of the other end in the width direction, is brought into contact with and positioned by a rod 26, which will be described later. A rod 26 is attached to the underside of the felt 25 of the swing rail 19 along its length.
is installed.

This rod 26 is a support member attached to the lower end surface of the support member 22 by a screw 28 via a substantially L-shaped support rod 27 whose one end is fixed to a predetermined location by welding or the like. It is rotatably attached to the cylindrical part 29. A struck member 30 having a substantially U-shaped cross section is fixed to a predetermined location of the rod 26 by welding or the like. This elevating member 30 is linked to the operation of the first elevating rod 32, which is moved up and down by operating the pedal 31 with the foot, by a mechanism having substantially the same configuration as the well-known pedal assembly. The actuating rod 33 is swung, and is moved up and down in conjunction with the movement of the second thrusting rod 34, which is moved up and down along with this swiveling movement. In addition, 35 is a shelf board. Furthermore, here,
The positional relationship between the second hammer 16 and the sounding body 17 will be explained below. First, the relative relationship between the sounding body 17 and the pedal 31 will be explained.

The state shown by the solid line in FIG. 4 shows the state when the pedal 31 is in the normal rest position, and when the pedal 31 is depressed halfway from this state, the struck member 30 is raised together with the rod 26 by half of its travel stroke. Along with this, the felt 25 of the swing rail 19 is pushed by the rising rod 26, so that the swing rail 19 moves counterclockwise together with the sounding body 17 against the force of the leaf spring 23. It is rotated by half of the movement stroke and reaches the position shown by the two-dot chain line in FIG.
is further raised together with rod 26 and reaches the limit point of rise,
Along with this, the swing rail 19 is also rotated counterclockwise together with the sounding body 17, and reaches the counterclockwise rotation limit point as shown by the dashed line in FIG. 4. When the operation of the other pedal 31 is stopped, All the elements are designed to return to their original resting states shown by solid lines in FIG. By the way, as mentioned above, when the pedal 31 is pressed halfway, the sounding body 17 reaches the middle position of its movement range as shown by the two-dot chain line in FIG. The distance from the head of the second hammer 16 to the sounding body 17 is set to correspond to the distance from the head of the first hammer 15 in the rest position to the string 5, that is, the string-striking distance.

Next, the operation of the above-mentioned component device will be explained. First, we will explain the case where the pedal 31 is not operated at all. In this case, the sounding body 17 is in the position shown by the solid line in FIG.
The distance from the head of the second hammer 16 to the sounding body 17 is the first
Since it is suitably larger than the string striking distance of the hammer 15, when a key is pressed, the hammer shank 14 corresponding to this key rotates clockwise and the first hammer 15 strikes the string 5. Accordingly, the clockwise rotation of the hammer shank 14 is prevented, and therefore the second hammer 1
6 does not reach the position where it can strike the sounding body 17, therefore, only the string 5 is struck in the same manner as before, vibrating the sound, and producing the same tone as before. Next, we will explain the case where the pedal 31 is depressed to the maximum. In this case, the sounding body 17 is
At the position shown by the dotted chain line, the distance from the head of the second hammer 16 to the sounding body 17 is appropriately smaller than the string-striking distance of the first hammer 15. When the hammer shank 14 rotates clockwise and the second hammer 16 hits the sounding body 17,
As a result, the clockwise rotation of the hammer shank 14 is prevented, and therefore the first hammer 15 does not reach a position where it can strike the string 5, and therefore only the sounding body 17 is struck, producing a vibrating sound. , you can get a different tone than conventional ones.
Next, a case will be explained in which the pedal 31 is depressed approximately half way. In this case, the sounding body 17 is at the position indicated by the two-dot chain line in FIG. 4, and the distance from the head of the second hammer 16 to the sounding body 17 is Since the distance corresponds to the string striking distance of the first hammer 15, when one key is pressed, the hammer shank 14 corresponding to this key rotates clockwise, and the first hammer 15 strikes the string 5. The lever string 5 is made to vibrate and make a sound as before, and at the same time, the second hammer 16 hits the sounding body 17 to make this sounding body 17 also vibrate and make a sound, and the sound obtained is a composite sound, which is the same as the above two. You can get a tone that is even more different from what you would normally get.

In this way, even though the same key is pressed, by appropriately operating the pedal 31, any one tone can be selected from the conventional tone and the two different tones. Note that in the first and second embodiments described above, the metal band-shaped sounding body 17 is provided in correspondence with the second hammer 16, but the sounding body 17 may be made of something other than a string. However, it is not limited to this.

Further, in the first and second embodiments, the second hammer 16
The configuration is such that the sounding body 17 is struck by a device to obtain the raw sound, but the present invention is not limited to this. For example, the vibration of the sounding body 17 is converted into an electrical signal by a pick-up such as a pressure-sensitive element, and then an amplifier, a speaker, etc. electrically amplified by
Alternatively, the vibration of the sounding body 17 may be mechanically amplified by, for example, a second sounding board.

Furthermore, in the first and second embodiments described above, only one second hammer 16 is provided as the sub-impacting body, but the invention is not limited to this, and a plurality of hammers may be provided to correspond to the second hammer 16. A configuration may also be adopted in which a plurality of sounding bodies are provided.

In addition, in the first and second embodiments described above, the case where the present invention is applied to a grand piano has been described, but the present invention is not limited to this, and can be applied to other string-type keyboards such as an upright piano or an electric piano. Of course, it can be widely applied to musical instruments.As mentioned above, the keyboard instrument according to the present invention has a sub-striking body separate from the main striking body that strikes the strings,
In addition, this secondary striking body is connected to the main striking body so as to move integrally, and a sounding body other than the string is provided in correspondence with this secondary striking body, so that one key can be pressed and operated. Therefore, a composite sound can be obtained by making the strings and a sounding body other than the strings sound at the same time, and therefore a tone different from conventional ones can be obtained.

In addition, in particular, in this invention, since both the main and auxiliary striking bodies are connected so as to move as one, there is no risk of causing discomfort such as shaking when touching the key, and both the striking bodies can be adjusted depending on the adjustment. The timing of the blows can always be precisely matched,
A reproducible pronunciation effect can be obtained.

The sounding body is provided so as to be movable and adjustable along the direction of movement of its corresponding sub-striking body, and at least one of the string and the sounding body is switched and moved to a state where it is not struck by the corresponding striking body. By pressing the same key, it is possible to selectively obtain any one of the conventional tones and a plurality of tones different from the conventional tones. This has effects such as making it possible to perform a variety of performances.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view showing a part of an example of a conventional grand piano, Fig. 2 is a longitudinal side view showing a main part of an example in which an embodiment of the present invention is applied to a grand piano, and Fig. 3 FIG. 4 is a longitudinal sectional side view showing a main part of another embodiment of the present invention, and FIG. 5 is a perspective view showing a part thereof. 1...Frame, 2...Pin board, 5.
...Strings, 7...Soundboard, 12...
Chayan Claire, 14...Hammershank,
15, 16...Hammer 17...Sounding body, 19...Swing rail, 26...
Rod, 31...pedal.

Claims (1)

[Scope of Claims] 1. In a string-type keyboard instrument in which a main striking body strikes a string to produce sound by operating a keyboard, a secondary striking body other than the main striking body is used for one key. A keyboard instrument comprising: a striking body; the secondary striking body is connected to the main striking body so as to move integrally; and a sounding body other than a string is provided in correspondence with the secondary striking body. . 2. The keyboard instrument according to claim 1, wherein the sounding body other than the strings is provided so as to be movable and adjustable along the moving direction of its corresponding sub-striking body.