JP6732264B1 - Percussion instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a percussion instrument capable of freely adjusting a snare sound emitted from the percussion instrument by an external operation. A rotating shaft (2) provided in a box-shaped body (1), a reverberation line member (3) attached to the rotating shaft (2), and an operating member (4) provided so as to be located from the outer side to the inner side of the box-shaped body. The movable member 5 provided in the box-shaped body and moved by the operation of the operating member, and the linear member 6 having the ends attached to the rotary shaft 2 and the movable member 5 are provided to operate the operating member. When the movable member moves, the linear member rotates the rotating shaft, so that the area in which the reverberation member contacts the inner surface of the box-shaped body changes. [Selection diagram] Figure 2

Description

The present invention relates to a percussion instrument in which a player manually strikes the outer surface of a hollow box-shaped body to generate a sound.

As a percussion instrument in which the inside of a box-shaped body is hollow and a player strikes the outer surface of the box-shaped body to generate a sound, for example, what is called a cajon in which a plate material is formed into a rectangular parallelepiped is widely used. In addition, in such a cajon, there is a sound line member called a snappy inside, in order to generate a peculiar reverberation sound (snare sound) in addition to the impact sound of the outer surface. (Patent Document 1 [0002] [0008] [0009] [FIG. 8]).

Japanese Patent No. 5769761

Here, there are cases where the player wants to slightly change the magnitude of the sound of the snare sound emitted from the cajon, due to various reasons such as the taste of the player and the genre of the music to be played. However, in the conventional cajon, since the reverberation line member provided inside is fixedly attached, it is difficult to adjust the reverberation due to the snare sound according to the preference of the performer. That is, if the performer wants to adjust the snare sound emitted from the reverberation line member, the position of the resonation line member must be subtly changed by temporarily opening a part of the plate material forming the box-shaped body. I had to do it. Then, after adjustment, the plate material is closed again to form a box-shaped body, and it is confirmed whether or not the snare sound is appropriate, but if the snare sound emitted at this time is not appropriate, It was necessary to repeat the above work, and the work was extremely troublesome. In this respect, the snare sound generated from the cajon becomes inevitably small when the area of the reverberation line member that contacts the inner surface of the cajon is small, and conversely, when the area of the reverberation line member that contacts the inner surface of the cajon is large. , The sound also becomes louder. Therefore, it would be convenient if the contact area of the reverberation member with respect to the inner surface of the cajon can be freely changed from the outside without opening any plate material constituting the cajon.

Therefore, in order to solve the above-mentioned problems, the present invention is a percussion instrument having an internal hollow box-shaped body and provided with a reverberation member inside, and freely adjusts the snare sound emitted from the percussion instrument by an external operation. The purpose is to provide a percussion instrument that is designed to be obtained.

In order to solve the above-mentioned problems, the present invention relates to a percussion instrument for playing a sound by striking a predetermined portion of the outer side surface of a box-shaped body having a hollow inside with a hand, which is rotatable in the box-shaped body. A rotating shaft provided on the rotating shaft, a sounding line member having a base end portion attached to the rotating shaft and having a predetermined length in a direction orthogonal to the axial direction of the rotating shaft, and penetrating from the outside to the inside of the box-shaped body. An operating member that is provided so as to move, a movable member that is provided inside the box-like body and that moves in a direction toward and away from the rotating shaft by operating the operating member, and the rotating shaft and the movable member. A linear member having an end attached to each of them, and when the movable member is moved by operating the operating member, the linear member rotates the rotary shaft, whereby the inner surface of the box-shaped body is rotated. In addition, the contact area of the reverberation line member is changed.

According to the present invention, in a percussion instrument having a sound box member inside a hollow box-shaped body, it is possible to freely adjust a snare sound according to a player's preference, etc., only by an operation performed from the outside. You can Moreover, such adjustment of the reverberation member can be realized with a relatively simple structure.

The perspective view of the percussion instrument of this embodiment. The perspective view which shows the state which removed the striking face plate of the percussion instrument of this embodiment. The perspective view which looked through the inside of the percussion instrument of this embodiment. The longitudinal section of the percussion instrument of this embodiment. The longitudinal section of the percussion instrument of this embodiment.

An embodiment of a percussion instrument according to the present invention will be described below with reference to the drawings. The present invention is widely applicable to percussion instruments in general, but in the present embodiment, an example in which the present invention is applied to a percussion instrument called a cajon formed in a rectangular parallelepiped box shape will be described. FIG. 1 is a perspective view of a cajon, FIG. 2 is a perspective view showing a state in which a striking plate of the cajon is removed, FIG. 3 is a perspective view of the interior of the percussion instrument of the present embodiment, and FIGS. 4 and 5 are of the present embodiment. It is a longitudinal cross-sectional view of a percussion instrument. In the illustrated cajon C, a rectangular parallelepiped box-shaped body 1 having a hollow interior, a rotary shaft 2 rotatably provided in the box-shaped body 1, and a base end portion attached to the rotary shaft 2 are provided. A sounding line member 3 having a predetermined length in a direction orthogonal to the axis of the rotating shaft 2, an operating member 4 provided so as to penetrate from the outer side to the inner side of the box-shaped body 1, and an inner side of the box-shaped body 1. By a movable member 5 which is provided in the movable member 5 and moves in a direction toward and away from the rotary shaft 2 by operating the operation member 4, and a linear member 6 whose ends are connected to the rotary shaft 2 and the movable member 5, respectively. It is roughly configured.

The box-shaped body 1 is made of wood, and is arranged on each of the striking face plate 10 that the player of the Cajon C strikes by hand, the back face plate 11 facing the striking face plate 10, and both sides of the striking face plate 10 and the back face plate 11. The right side plate 12 and the left side plate 13, the upper face plate 14 that closes the upper face, and the bottom face plate 15 that closes the bottom face are formed into a rectangular parallelepiped shape. The striking face plate 10 is thinner than the other back face plate 11, right side face plate 12, left side face plate 13, upper face plate 14, and bottom face plate 15, which makes the striking face plate 10 easier to vibrate, and The hammering sound is good. Further, on the rear plate 11, a horizontally elongated elliptical sound hole 16 is provided so that a sound generated by the player hitting the striking plate 10 can be extracted to generate a rich low tone. Further, rubber leg portions 17, 17, 17, 17 are fixed to the outer surface of the bottom plate 15 of the box-shaped body 1 near the four corners, respectively. In addition, horizontally long rectangular rod-shaped reinforcing bars 18, 18, 18, 18 are horizontally fixed to the right and left sides of the upper end of the inner surface of the box-shaped body 1 and the right and left sides of the lower end of the inner surface of the box-shaped body 1. Has been done. Then, a through hole 19 is vertically penetrated at a position closer to the front of the left end portion of the bottom plate 10 of the box-shaped body 1, and a through hole 19 for inserting a bolt described later is formed, and a lower end of the box-shaped body 1 is formed. A bolt insertion hole 20 continuous with the through hole 19 is formed at a position near the front of the reinforcing bar 18a on the left side of the portion. In addition, on each of the inner surfaces of the right side plate 12 and the left side plate 13 of the box-shaped body 1, a non-penetrating circular recessed portion that is recessed inward (at a position closer to the front in the depth direction and slightly above and in the center in the vertical direction). (Not shown) is formed.

The rotating shaft 2 is a wooden rod-shaped member, and is horizontally mounted inside the box-shaped body 1. Specifically, both ends of the rotary shaft 2 are fitted in circular recesses on the inner surface of the right side plate 12 of the box-shaped body 1 and the inner surface of the left side plate 13 of the box-shaped body 1. As a result, the rotating shaft 2 is rotatable within the box-shaped body 1. Further, a line insertion hole (not shown) for fixing a linear member 6 described later is formed at a position from the right end of the rotary shaft 2.

The reverberation line member 3 is generally called a snappy, and a plurality of corrugated metal wires 30, 30... Are arranged side by side and one end of the metal wire 30 is fixed to a holding metal fitting 31. By being integrated, it is formed into a strip shape having a predetermined length. Further, in this embodiment, the two reverberation line members 3 and 3 are fixed to the left and right sides of the rotary shaft 2, respectively. Specifically, the base end side of the reverberation line member 3, that is, the holding metal fitting 31 of the reverberation line member 3 is screwed to the rotating shaft 2 by screws 32, 32. The length of the reverberation line member 3 mounted on the rotary shaft 2 is set so that the other end portion, that is, the free end side does not contact the upper surface plate 14.

The operating member 4 is made of metal, and is composed of a bolt having a head portion 4a and a shaft portion 4b that is relatively long and has a male screw on the outer circumference. The head 4a of the operating member 4 is exposed outside the box-shaped body 1, specifically, the head 4a is exposed outside the bottom plate 15, and the shaft portion 4b is located inside the box-shaped body 1. It is installed. That is, leaving the head portion 4a outside the bottom plate 15, the shaft portion 4b is inserted into the through hole 19 of the bottom plate 15 and the bolt insertion hole 20 of the reinforcing bar 18a, and the tip end portion of the box-shaped body 1 is inserted. It is designed to project inside.

The movable member 5 is made of a horizontally long rectangular flat plate having a predetermined thickness made of wood, and has a central truncated cone that penetrates in the up-down direction and is slightly constricted downward. A hole 50 is drilled. Then, the nut member 51 is fitted in the nut mounting hole 50. The nut member 51 is configured to have a shape matching the shape of the nut insertion hole 50, that is, a cylindrical body portion 51a having an inverted truncated cone shape, and a flange portion 51b provided around the upper end edge thereof. A female screw is cut on the inner peripheral surface of the central hole. Further, a small-diameter wire insertion hole 52 through which a linear member 6 to be described later is inserted is bored at a position slightly forward of the nut insertion hole 50 of the movable member 5. The shaft portion 4b of the operation member 4 projecting into the box-shaped body 1 is screwed into the nut member 51 of the movable member 5.

The linear member 6 is a metal string-shaped wire, and has one end attached to the movable member 5 and the other end attached to the rotary shaft 2. That is, the ball-shaped retaining member 60 is fixed to one end of the linear member 6, and the retaining member 60 is positioned on the lower surface side of the movable member 5 and then the linear member 6 is inserted into the wire insertion hole 52. The end of the linear member 6 is prevented from coming off from the movable member 5. On the other hand, the other end of the linear member 6 is wound from the front side to the rear side of the rotary shaft 2 and inserted into the wire insertion hole of the rotary shaft 2, and then fixed by a screw 61. At this time, the linear member 6 is firmly stretched between the movable member 5 and the rotary shaft 2.

When the player actually plays the cajon C configured as described above, the player generally sits on the striking face plate 10 so as to straddle the box-shaped body 1 and hits the striking face plate 10. Is. In addition, according to the present invention, the snare sound such as a crackling sound obtained when the player hits the cajon C can be adjusted according to the preference of the player. Therefore, a method of adjusting the snare sound in the cajon C will be described below.

FIG. 4 shows a state in which the sounding line member 3 has a small contact area with the inner surface of the striking plate 10 of the box-shaped body 1. At this time, the base end portion of the reverberation line member 3, that is, the holding metal fitting 31 of the reverberation line member 3 is located in front of the rotating shaft 2. Therefore, the base end portion side of the reverberation line member 3 is in a substantially upright state while the tip end (free end) side of the reverberation line member 3 is in a state of hanging down forward due to its weight, Only the tip portion of the contact surface comes into contact with the inner surface of the striking plate 10. In this state, the snare sound cannot be effectively produced unless the player hits the striking plate 10 relatively strongly. Here, when the performer wants the snare sound to resonate with a little lighter force, adjustment is performed using the operation member 4 on the lower surface of the bottom plate 15 of the box-shaped body 1. That is, the head 4b of the operating member 4 is manually rotated in the direction of the arrow shown in FIG. As a result, the shaft portion 4b of the operation member 4 inevitably rotates in the same direction as the head portion 4a. Since the shaft portion 4b of the operating member 4 is screwed into the nut member 51 of the movable member 5, the movable member 5 moves downward, that is, the rotating shaft 2 as the shaft portion 4b of the operating member 4 rotates. And move away. As a result, the linear member 6 is pulled downward, and the rotary shaft 2 to which the linear member 6 is fixed rotates forward (counterclockwise). Therefore, as shown in FIG. 5, the reverberation line member 3 approaches the inner surface of the striking plate 10, and the contact area thereof increases. In this state, even if the player hits the striking plate 10 with a relatively weak force, the snare sound of the reverberation member 3 can be effectively reverberated. However, if the contact area becomes too large, unnecessary noise will be mixed in addition to the originally desired snare sound, so the performer rotates the operation member 4 in the forward and reverse directions to obtain a desired snare sound. Can be adjusted to different positions.

In addition, in the said embodiment, although the box-shaped body showed the example which is a rectangular parallelepiped shape, it is not necessarily limited to this, The inside is a hollow box-shaped body and a part of outer surface is hit|damaged by hand. The shape can be arbitrarily selected as long as it can be pronounced. Further, in the above-described embodiment, the rotation shaft is arranged laterally, that is, an example in which the rotation shaft is arranged so as to be bridged over the left and right side plates of the box-shaped body is shown. It is possible to employ various modes such as vertically arranged, that is, arranged so as to bridge the upper and lower side surface plates of the box-shaped body. Furthermore, although an example of the reverberation line member formed of a corrugated metal wire is shown, the reverberation wire member is not limited to this, and may be a coiled metal wire, for example, and may generate a snare sound. Any member can be selected as long as it is one. Moreover, in the said embodiment, although the example which provided two reverberation line members in the rotating shaft was shown, it is not restricted to this, and if one or more are provided, the number will not be mattered. Further, in the above-described embodiment, the reverberation line member is arranged so as to face upward, but various directions can be selected. Further, in the above-described embodiment, the example in which the operation member is the bolt has been shown, but the present invention is not limited to this, and the movable member may be moved toward and away from the rotation axis by the operation of the operation member. If possible, other members can be selected.

1 Box-shaped body 2 Rotating shaft 3 Reverberation line member 4 Operating member 5 Movable member 6 Linear member

Claims (1)

In a percussion instrument that plays by generating a sound by striking with a hand a predetermined portion on the outer surface of a box-shaped body having a hollow inside,
A rotating shaft rotatably provided in the box-shaped body; a sounding line member having a base end attached to the rotating shaft and having a predetermined length in a direction orthogonal to an axial direction of the rotating shaft; An operating member provided so as to penetrate from the outer side to the inner side of the body, a movable member provided inside the box-shaped body and moved in a direction of approaching or leaving the rotation shaft by operation of the operating member, A rotary shaft and a linear member having an end attached to each of the movable members,
When the movable member is moved by operating the operation member, the linear member rotates the rotating shaft, thereby changing an area in which the reverberation member contacts the inner surface of the box-shaped body. Percussion instrument.

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