JPH04299393A - Support mechanism for sound generation body - Google Patents

Abstract

PURPOSE:To provide the sound generation body support mechanism which absorbs a shock at the time of a percussion and enables the sound generation body to excellently vibrate in whichever direction the percussion is made. CONSTITUTION:The sound board support mechanism consists of a base 3 which is arranged on one side along the percussion direction (up-down direction) of a sound board 2, a frame 4 which is arranged on the opposite side from the base 3 and the above sound board 2 in the percussion direction, pins 5A and 5B which control the horizontal movement of the sound board 2, felt materials 6A and 6B interposed between frame rails 4A and 4B connected to the frame 4 and the sound board 2, and felt materials 8A and 8B interposed between the base 3 and sound board 2; and the horizontal and vertical position of the sound board 2 are supported.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sounding body support mechanism that effectively supports a sounding body in a state where it can produce sound even when struck from either side in the direction of impact.

0002

2. Description of the Related Art Conventionally, the following techniques have been proposed as structures for supporting sounding bodies that produce sounds in response to strikes, such as tone plate percussion instruments. That is, it has a protrusion vertically installed on the upper surface of a string or band made of rubber or a substance with the same effect as this, and a number of protuberances on the protrusion, each of which has a bulge at its tip. Then, the attachment holes drilled in the koto board are fitted and pressed into the swelling part of this stop piece, thereby preventing the koto board from producing dissonant sounds and out of tune.
(Utility Model Publication No. 31-18342). A notch on the side of the tone plate is engaged in a free state with a mount formed on a tone plate holder made of elastic plastic such as rubber or synthetic resin and has a receiving part and a head, so that the notch in the tone plate is ``Tone plate receiver device for glockenspiels, etc.'' that does not make a metallic sound even if the mount is touched and ensures the free state of the tone plates (publication of Utility Model Publication No. 33-4343). "Tone plate support pins covered with cylindrical rubber or elastic plastic are provided on both frames in a 1/2 pitch staggered manner, and tone plates are removably attached to these pins to improve the acoustic effect." ” (Publication No. 37-822). ``When supporting the tone plate on the sound plate by planting a hook with a notch in parallel to the sound plate receiver in front of the derived tone plate and hanging a binding string that passes through the tone plate, ``Xylophone'' that prevents the binding string from coming off (publication number 10826, 1983).

0003

However, all of the above-mentioned prior art techniques have a problem in that there is a restriction in the direction in which the sound plates, which are the sounding bodies, are arranged with respect to the direction of impact. That is, it is effective when the direction of impact is on the opposite side of the tone plate support member to the tone plate, but if the direction of impact is reversed, that is, the direction of impact is on the opposite side of the tone plate support member to the tone plate. If they are placed in the same direction, it will not be possible to both absorb the impact upon impact and retain the vibrations generated by the impact, making it impossible to guarantee appropriate vibrations and causing rapid attenuation of the vibrations. This made it extremely difficult to achieve natural pronunciation. This is because the tone plate support member is only placed on one side of the tone plate, so unless you hit it from the side opposite to the tone plate support member, you will not be able to obtain the cushioning effect that absorbs the impact when struck. This is because they are doing so. Note that the tone plate support member is provided with a protruding stop piece having a swelling portion and a mount having a head. When hitting from the lower side, the impact at the time of impact is absorbed by the tone plate support member, but once the tone plate contacts the tone plate support member due to the impact, it falls due to gravity and comes into contact with the swelling or head. Then, the tone plate is supported in a rotationally displaced state around the longitudinal axis of the tone plate passing through the fitting position of the stopper and the mount.
This free vibration state is hindered. This causes the tone plate vibrations to decay very quickly. Such restrictions on the direction of impact on the sounding body are, for example,
When designing a musical instrument equipped with a sounding body such as a tone plate percussion instrument, or various sounding mechanisms, there is also a problem in that the degree of freedom in designing the arrangement of the tone plate and the direction of striking is reduced. Furthermore, from the viewpoint of mechanical strength and vibration characteristics, the structure of supporting the tone plates with strings is difficult to apply unless the thickness of the tone plates as the sounding body in the direction of impact is at least a predetermined thickness. ,
It is extremely difficult to create through-holes for strings in the tone plate along its width without impairing the vibration characteristics of the tone plate, so there is also the disadvantage that its versatility is low. There was still room for improvement.

The present invention solves the above-mentioned problems of the prior art at once, and has a simple structure that absorbs the shock at the time of impact and provides suitable vibration of the sounding body for impact from either side of the impact direction. The purpose of the present invention is to provide a sounding body support mechanism that can achieve both of the following.

[0005]

[Means for Solving the Problems] The structure according to claim 1, which has been made to solve the above problems, has a first structure facing one surface in the striking direction of a sounding body that generates sound by striking from a predetermined direction. a support member, a first buffer member interposed between the first support member and one surface of the sounding body near a node position when the sounding body vibrates; a second support member facing the other surface in the striking direction; and a second support member interposed between the second support member and the other surface of the sounding body near the position of the node when the sounding body vibrates. The gist of the present invention is a sounding body support mechanism characterized by comprising a second buffer member.

[0006]

[Function] The structure according to claim 1 is such that the sounding body, which generates sound by being hit from a predetermined direction, is placed on one side of the sounding body in the hitting direction by the first supporting member facing the sounding body through the first buffering member. In addition to supporting near the node position during vibration,
The second support member facing the other surface in the striking direction acts to support the vibration from the other surface side in the striking direction via the second buffer member in the vicinity of the position of the node at the time of vibration. That is, the sounding body is held in the vicinity of the position of the node at the time of vibration by the first support member and the first buffer member, which are arranged along the direction of impact, and the second support member and the second buffer member. However, it absorbs the impact of the impact from either side in the direction of impact, and retains the vibrations that occur as a result of the impact. Therefore, the sounding body support mechanism of the present invention is
To support a sounding body without disturbing its natural vibration even if the sounding body is hit from either side along the hitting direction.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, some preferred embodiments of the present invention will be described in detail with reference to the drawings. First Embodiment A tone plate support mechanism which is a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. As shown in FIGS. 1 and 2, the tone plate support mechanism 1 includes a base 3 disposed on one side along the striking direction of the tone plate 2 (vertical direction in FIG. 1), and a base 3 and the tone plate. 2, a frame 4 disposed on the opposite side in the direction of impact;
Pins 5A and 5B that restrict the movement of the tone plate 2 in the horizontal direction (left and right direction in FIG. 2) are interposed between the frame rails 4A and 4B connected to the frame 4 and the tone plate 2. It is composed of felts 6A, 6B, strings 7A, 7B, and felts 8A, 8B interposed between the base 3 and the tone plate 2. The tone plate 2, which is a sounding body, is made of metal, but can be molded from various materials such as wood, synthetic resin, and ceramics. Approximately at the longitudinal center of the tone plate 2,
Through holes 2A and 2B are bored near positions that become nodes when the tone plate 2 vibrates due to impact. Here, the vibration caused by impact means a vibration state in which the tone plate 2 generates a fundamental tone. The base 3, which is the first support member, and the frame 4, which is the second support member, are molded from metal, wood, synthetic resin, or the like. Further, frame rails 4A and 4B are successively provided on the lower surface of the frame 4, which are close to and opposite to each other near positions that become nodes when the tone plate 2 vibrates due to impact. Felts 6A, 6B as first buffer members are attached to the surfaces of the frame rails 4A, 4B facing the tone plate 2, and further, the felts 6A, 6B are attached to the surfaces facing the tone plate 2 of the frame rails 4A, 4B. Similarly, the strings 7A, 7 serve as the first buffer members.
B is attached. These strings 7A, 7B are connected to the tone plate 2
It comes into contact with the lower surface 2C of the frame 4 side and supports it from below.

On the other hand, pins 5A and 5B are inserted into the lower surface of the base 3, which is close to and opposite to the position where the tone plate 2 becomes a node when it vibrates due to a strike. This pin 5A
, 5B are covered with rubber covers 9A, 9B to avoid direct contact with the fitting holes 2A, 2B of the tone plate 2. The heads of the pins 5A, 5B are inserted into the through holes 2A, 2B, and the tops of the pins 5A, 5B are located at a position slightly higher than the lower surface 2C of the tone plate 2. The fitted state with the tone plate 2 is maintained even when vibrating due to the impact of the tone plate 2. Furthermore, felts 8A and 8B functioning as second buffer members are interposed between the base 3 and the upper surface 2D of the tone plate 2 around the pins 9A and 9B.

[0009] In this way, the position of the tone plate 2 in the horizontal plane is regulated by the pins 5A and 5B. On the other hand, tone plate 2
are frame rails 4A and 4B connected to the frame 4.
, the felts 6A, 6B, the strings 7A, 7B, the base 3, and the felts 8A, 8B sandwich the vertical direction.
That is, the position in the direction of impact is regulated. here,
Fix the base 3 side upward in the direction of gravity and the frame 4 side downward in the direction of gravity, so that the lower side in the direction of gravity, that is, the tone plate 2
When struck from the lower surface 2C side, the tone plate 2 is lifted upward in the direction of gravity due to the impact of the impact, but this impact is caused by the impact on the base 3.
It is absorbed by the felts 8A and 8B interposed on the sides. Thereafter, the tone plate 2 falls under its own weight, rides on the strings 7A and 7B on the frame 4 side near the position of the node at the time of vibration, and vibrates freely. In addition, if the top and bottom of Figure 1 are reversed,
When the base 3 side is placed facing downward in the direction of gravity and the tone plate 2 is hit from the upper surface 2D side located on the lower side in the direction of gravity in the opposite direction to the direction of gravity, the tone plate 2 is regulated by pins 5A and 5B. However, the impact upon impact is absorbed by the strings 7A, 7B and the felts 6A, 6B. After that, when the tone plate 2 shifts to a state where only gravity acts, the tone plate 2 is moved to the pins 5A, 5B and the felt 8A,
It vibrates freely and produces sound while being regulated by 8B. Further, in this case, when the tone plate 2 is hit along the gravity direction from the lower surface 2C side located on the upper side in the gravity direction, the tone plate 2 will be struck as follows.
Felt 8A, 8B while being regulated by pins 5A, 5B
It vibrates freely due to the support of In this case, the impact upon impact is absorbed by the felts 8A, 8B, and the subsequent vibration state is maintained by the felts 6A, 6B, the strings 7A, 7B, and the felts 8A, 8B.

As described above, according to the first embodiment, free vibration of the tone plate 2 can be realized even if the tone plate 2 is struck from below along the direction of gravity. Therefore, as with conventional tone plate percussion instruments, the fundamental tone of the tone plate can be accurately produced not only from the upper side along the direction of gravity but also from the lower side. It is possible to eliminate the restriction on the direction of gravity. Further, since the tone plate 2 can be supported by simply forming the through holes 2A and 2B, the tone plate 2 has a simple structure and can be applied to a relatively thin tone plate 2, thereby exhibiting wide versatility.

Modification In the first embodiment, the first and second cushioning members are a combination of felts 6A, 6B and strings 7A, 7B;
Alternatively, an example using felts 8A and 8B has been described, but for example, only a string, a combination of string and felt,
The same effect can be achieved even if appropriate selections are made, such as felt alone, rubber, or a combination thereof. Further, for example, as shown in FIG. 3, strings 7A and 7B that directly contact the tone plate 2
The strings 7A, 7
By configuring B to be attached to the felts 6A and 6B, when each tone plate 2 vibrates as it is struck, the tone plate 2 can be accurately supported near the node position, so that the fundamental tone of each tone plate 2 can be further improved. This allows for more accurate pronunciation.

Second Embodiment Next, a second embodiment of the present invention will be explained based on FIG. 4. The difference between this second embodiment and the previously described first embodiment is that
In this embodiment, one of the pins that restricts the movement of the tone plates 2 in the horizontal plane is disposed between adjacent tone plates.

As shown in FIG. 4, only one through hole 2A is bored in the tone plate 2, and the pin 5A is inserted through this through hole 2A. A pin 12 covered with a rubber cover is implanted in the frame rail 4B between adjacent tone plates 2 on the side where the through holes 2A of the tone plates 2 are bored and on the opposite side in the longitudinal direction.

As in the second embodiment, the through holes 2 of the tone plate 2
Even if the configuration is such that the position of the tone plate 2 in the horizontal plane is restricted by the pin 5A inserted through A and the pin 12 interposed between the adjacent tone plates 2, the same effect as in the first embodiment described above can be obtained. It has a great effect.

Third Embodiment Next, a third embodiment of the present invention will be explained based on FIGS. 5 and 6. The difference between this third embodiment and the previously described first embodiment is as follows:
The third embodiment is characterized in that frames are independently arranged for each tone plate.

As shown in FIGS. 5 and 6, the tone plate 22 is independently supported from both sides by bases 23A, 23B, which are first supporting members, and frames 24A, 24B, which are second supporting members. At the same time, the position within the plane is regulated by the pin 25A. Between the bases 23A, 23B and the tone plate 22, felts 26A, 26B, which are first buffering members and have a square cross-sectional shape with a small contact area with the tone plate 22, are interposed, and the frames 24A, 24B Felts 28A and 28B, which are second buffer members and have a wedge-shaped cross section and have a small contact area with the tone plate 22, are interposed between the tone plate 22 and the tone plate 22. Note that the frame 24A is fixed to the base 23A with screws 29A.

As explained above, according to the third embodiment, in addition to the effects of the first embodiment described above, the following effects are achieved. That is, since each tone plate 22 is supported by a pair of independent frames 24A and 24B, each tone plate 22 can be accurately supported along the direction perpendicular to the longitudinal direction of the tone plate 22, and each felt 26A, 26B, 2
Since the contact area between 8A, 28B and each tone plate 22 is minimized, the free vibration accompanying the striking of the tone plate 22 is not hindered, so that the fundamental tone can be accurately produced.

Note that each felt 26A, 26B, 28A
, 28B, for example, as shown in FIG. 7, a shock absorbing member may be constructed by attaching felt 30 to frame 24A and attaching string 31 thereon.

Application Example Next, an application example in which the tone plate support structure of the third embodiment is applied to a tone plate support mechanism of a celesta will be described with reference to FIG. As shown in FIG. 8, the celesta 41 includes tone plates 42,
It is comprised of a tone plate support mechanism 43 that supports this, a keyboard 44 operated by the player, and an action 45 that strikes the tone plate 42 in accordance with the operation of the keyboard 44. A key 53 that rotates around a balance pin 52 implanted in a balance rail 51 placed on a shelf board 50 applies force corresponding to the operation to a support rail 55 via a capstan screw 54.
The signal is transmitted to a support 56 which is rotatably connected to the support 56. The support 56 pushes up the hammer roller 58 via the jack 57 and disengages it, causing the hammer shank 59 to rotate counterclockwise in the figure. Then, the hammer 60 connected to the tip of the hammer shank 59 hits the tone plate 42.
is struck from below along the direction of gravity to produce a sound. At this time, since the damper 64 is separated from the tone plate 42 via the damper wire 63 by the damper lever 62 rotatably connected to the damper rail 61, the sound of the struck tone plate 42 is transmitted to the resonance box 65. It resonates with me. When applied to support a tone plate 42 that is struck from below along the direction of gravity by an action 45 to produce sound, as in this celesta 41, the support mechanisms of the embodiments described above are extremely effective.

Although several embodiments of the present invention have been described above, the present invention is not limited to these embodiments in any way, and within the scope of the technical idea thereof, for example, automatic sound It goes without saying that this can be realized in various ways, such as by applying it to a support structure for a tone plate, such as a plate percussion instrument or a door horn, in which the tone plate is hit from the side opposite to the gravity along the direction of gravity.

[0021]

As described in detail above, the present invention comprises a first support member and a first buffer member in which a sounding body is disposed along the direction of impact, a second support member and a second shock absorbing member. Since it is supported by being clamped near the position of the node during vibration by the buffer member, it is possible to both absorb the shock at the time of the impact and maintain the vibration that occurs due to the impact, regardless of the impact from either side of the impact direction. However, since the natural vibration can be guaranteed and the attenuation of the vibration can be suppressed, it is possible to always realize suitable sound sound regardless of the direction in which the sounding body is disposed with respect to the direction of impact, which is an extremely excellent effect. In addition, since the direction of impact on the sounding body can be set to a desired direction, for example, when designing instruments equipped with a sounding body such as tone plate percussion instruments, or various sounding mechanisms, it is possible to set the placement of the tone plate and the direction of impact. Since there are no restrictions, the degree of freedom in design can be dramatically improved. Furthermore, since the structure is not limited by the thickness of the supporting sounding body in the direction of impact, it can be applied to various sounding bodies.
There is also the advantage of increased versatility.

[0022]

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a first embodiment of the present invention.

FIG. 2 is a bottom view of the first embodiment of the present invention.

FIG. 3 is a plan view of a modification of the first embodiment of the present invention.

FIG. 4 is a plan view of a second embodiment of the present invention.

FIG. 5 is a side view of the third embodiment of the present invention.

FIG. 6 is a sectional view taken along the line AA.

FIG. 7 is a partial side sectional view of a modification thereof.

FIG. 8 is a partial side sectional view showing an application example of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Tone plate support mechanism, 2... Tone plate, 3... Base, 4... Frame, 6A, 6B, 8A, 8B... Felt, 7A, 7B... String

Claims (1)

[Claims] Claim 1: a first support member that faces one surface in the direction of impact of a sounding body that produces sound when struck from a predetermined direction; ,
a first buffer member interposed near the node position when the sounding body vibrates; a second support member facing the other surface of the sounding body in the striking direction; and a second support member. A sounding body support mechanism comprising: a second buffer member interposed between the other surface of the sounding body and near the position of a node when the sounding body vibrates.