CN108701442A - wind instrument - Google Patents

Abstract

The wind instrument includes a pipe body and a projection extending in a pipe axial direction from an inner peripheral surface of the pipe body.

Description

wind instrument

technical field

The present invention relates to wind instruments.

This application claims priority based on Japanese Patent Application No. 2016-49882 for which it applied in Japan on March 14, 2016, and uses the content here.

Background technique

Generally speaking, wind instruments such as clarinets, saxophones, and trumpets are provided with a mouthpiece for blowing breath into the tube body at the axial first end of the tubular tube body, and the second end of the tube body is open to the outside. constitute.

Patent Document 1 discloses a configuration in which a filter is provided between the mouthpiece and the instrument body in a keyboard type wind instrument including a musical instrument body having a keyboard and a mouthpiece connected to the instrument body. Although the filter has ventilation, it prevents the passage of saliva and impurities.

prior art literature

patent documents

Patent Document 1: Specification of US Patent No. 3715448

Contents of the invention

The problem to be solved by the invention

However, in many wind instruments, the second end of the pipe body is open to the outside, so foreign matter (such as spherical bodies such as glass marbles) entering the pipe from the second end of the pipe body is slightly smaller than the inner diameter of the pipe body. The situation in the body. In particular, if the tube body has a curved portion such as a trumpet, it may be difficult to take out foreign matter that has entered the tube body. In addition, when a young person such as a school child handles such a wind instrument, there is a possibility that a foreign object is accidentally inserted into the pipe body. Therefore, the structure of the tube body into which foreign matter enters is not preferable.

In order to prevent the intrusion of foreign substances into the body from the second end of the body, for example, it is conceivable to install the filter of Patent Document 1 on the second end side of the body. However, when the filter of patent document 1 is provided in the part of the 2nd end side of a pipe body, the following trouble will arise. First, the filter affects the resonant frequency generated within the body of the pipe, resulting in a change in the acoustic characteristics of the wind instrument. Second, the cloth (cotton swab, swab) used for maintaining the tube body cannot be inserted into the tube body from the second end of the tube body, so the maintenance inside the tube body becomes troublesome.

The present invention was made in view of the foregoing, and an object of the present invention is to provide a wind instrument capable of suppressing the influence on the acoustic characteristics and the maintenance of the pipe body and suppressing the intrusion of foreign matter into the pipe body.

means to solve the problem

The present invention provides a wind instrument including a pipe body and a convex portion extending inward from an inner peripheral surface of the pipe body.

Invention effect

According to the present invention, the influence on the acoustic characteristics of the wind instrument and the maintenance of the pipe body can be suppressed to be small, and the intrusion of foreign matter into the pipe body can be suppressed.

Description of drawings

Fig. 1 is a plan view showing a wind instrument according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view in the direction of arrow II-II in FIG. 1 .

Fig. 3 is a front view of the pipe body of Fig. 2 viewed from the open end side of the main pipe.

FIG. 4A is a front view showing a first modified example of the arrangement of convex portions in FIG. 3 .

FIG. 4B is a front view showing a second modification example of the arrangement of convex portions in FIG. 3 .

FIG. 5A is a front view showing a first modification example of the shape of the convex portion in FIG. 3 .

FIG. 5B is a front view showing a second modification example of the shape of the convex portion in FIG. 3 .

6 is a cross-sectional view showing a main part of a wind instrument according to a second embodiment of the present invention.

Fig. 7 is a perspective view showing main parts of a wind instrument according to a third embodiment of the present invention.

Detailed ways

[First Embodiment]

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3 .

As shown in FIGS. 1 and 2 , a wind instrument 1 according to this embodiment includes a pipe body 2 . The pipe body 2 may be formed of, for example, any one of a wood material, a metal material, and a resin material, or may be formed of a material obtained by appropriately combining these materials, for example.

The pipe body 2 may include, for example, only the main pipe 3 having a plurality of sound holes 5 , but in this embodiment, the main pipe 3 and the sub-pipe 4 branched from the main pipe 3 are provided.

The main pipe 3 of this embodiment is formed in a cylindrical shape with a constant inner diameter. The plurality of sound holes 5 formed in the main pipe 3 are arranged at intervals along the axial direction of the main pipe 3 . All of the plurality of sound holes 5 may be opened and closed directly by, for example, a player's fingers, or all may be opened and closed by, for example, a key mechanism 6 (key system). In this embodiment, a part of the sound holes 5 are directly opened and closed by the player's fingers, and the remaining sound holes 5 are opened and closed by the key mechanism 6 . That is, the wind instrument 1 of the present embodiment also includes the key mechanism 6 .

A mouthpiece 6 is provided at the first axial end of the main pipe 3 . The mouthpiece 7 is, for example, integrally formed with the tube body 2 , but is attached so as to be detachable from the tube body 2 in this embodiment. The mouthpiece 7 can be, for example, a gas spring, a lip spring, a single spring, or a double spring. The second axial end of the main pipe 3 is open to the outside. A bell, for example, may also be provided at the second end of the main pipe 3 . In this embodiment, a flange portion 8 extending outward of the main pipe 3 in the radial direction of the main pipe 3 is provided at the second end of the main pipe 3 .

The main pipe 3 may consist of, for example, only a straight pipe portion 11 in which the pipe axis of the main pipe 3 extends linearly, or may consist of, for example, only a curved pipe portion 12 in which the pipe axis of the main pipe 3 is bent so as to change its direction. The main pipe 3 of this embodiment has both the straight pipe part 11 and the curved pipe part 12 . The straight pipe portion 11 and the curved pipe portion 12 are connected in the axial direction of the main pipe 3 . The opening end 9 (second end) of the main pipe 3 may be constituted by, for example, a curved pipe portion 12 , but is constituted by a straight pipe portion 11 in this embodiment. The bent pipe portion 12 of the present embodiment meanders by bending a plurality of times, but may be bent only once, for example.

In the illustrated example, the sound hole 5 of the main pipe 3 is formed in the curved pipe portion 12 and not formed in the straight pipe portion 11 forming the opening end 9 of the main pipe 3 , but it may be formed in the straight pipe portion 11 , for example.

The sub-pipe 4 of this embodiment is formed in a cylindrical shape with a constant inner diameter. The sub-pipe 4 is connected to the end of the main pipe 3 on the mouthpiece 7 side. The direction in which the secondary pipe 4 extends from the main pipe 3 can be arbitrary. In the present embodiment, the sub-pipe 4 extends along the longitudinal direction (X-axis direction) of the main pipe 3 . The pipe body 2 includes the main pipe 3 and the sub-pipe 4, so that the wind instrument 1 of this embodiment has the same acoustic characteristics as the case where the pipe body 2 has a conical pipe shape.

In this embodiment, the longitudinal direction of the pipe body 2 and the main pipe 3 corresponds to a straight direction from the mouthpiece 7 toward the opening end 9 of the main pipe 3 when viewed from a player playing the wind instrument 1 . In the following descriptions, the left and right direction when viewed from the player is sometimes referred to as the width direction (Y-axis direction) of the pipe body 2, the main pipe 3, etc., and the up and down direction when viewed from the player is referred to as the pipe body 2, etc. 3 and so on in the height direction (Z-axis direction).

In the pipe body of the present embodiment described above, the curved pipe portion 12 is bent only in the height direction of the main pipe 3 . In addition, a plurality of sound holes 5 are formed at the center of the main pipe 3 in the width direction, and are arranged in a row along the longitudinal direction of the main pipe 3 .

Therefore, in the present embodiment, the shape of the main pipe 3 can be made bilaterally symmetrical with respect to the center of the main pipe 3 in the width direction. Thereby, the main pipe 3 can be manufactured by separately molding a pair of division|segmentation structure formed in the bilaterally symmetrical shape, and bonding together.

As shown in FIGS. 2 and 3 , the wind instrument 1 includes a convex portion 20 extending inwardly from the inner peripheral surface 13 of the main pipe 3 .

In this embodiment, the convex portion 20 is arranged on the inner peripheral surface 13 of the main pipe 3 . The convex portion 20 is arranged on the opening end 9 side of the main pipe 3 relative to the bent pipe portion 12 in the axial direction of the main pipe 3 . That is, the convex portion 20 is disposed on the inner peripheral surface 13 of the straight pipe portion 11 forming the opening end 9 of the main pipe 3 . In addition, in the present embodiment, the convex portion 20 is disposed on the opening end 9 side of the main pipe 3 than the sound hole 5 located closest to the opening end 9 of the main pipe 3 .

In the present embodiment, the convex portion 20 extends from the inner peripheral surface 13 of the main pipe 3 toward the inside of the main pipe 3 in the radial direction of the main pipe 3 . The convex part 20 of this embodiment is formed in the shape of a protrusion whose tip in the extension direction does not reach another position on the inner peripheral surface 13 . The specific shape of the protruding convex portion 20 is arbitrary, but it is hemispherical in the present embodiment.

In the present embodiment, a plurality of convex portions 20 are arranged at intervals along the circumferential direction of the main pipe 3 . More specifically, a pair of convex portions 20 according to the present embodiment are arranged at mutually symmetrical positions around the tube axis of the main pipe 3 . The pair of protrusions 20 , 20 are arranged at the same position in the axial direction of the main pipe 3 . The pair of protrusions 20 , 20 may be arranged at any position in the circumferential direction of the main pipe 3 , but in the present embodiment, they are arranged at both ends of the main pipe 3 in the width direction of the inner peripheral surface 13 of the main pipe 3 .

The protrusion 20 may be fixed to the main pipe 3 after being formed separately from the main pipe 3, for example, but is integrally formed on the main pipe 3 in this embodiment.

The convex portion 20 of the present embodiment prevents the foreign matter O having a predetermined size or more from passing through the position where the convex portion 20 is arranged (hereinafter referred to as a convex portion position) in the axial direction of the main pipe 3 in the main pipe 3 .

For example, compared with the case where the wind instrument 1 does not have the convex portion 20 , the spherical foreign matter O having a smaller diameter size is prevented from passing through the convex portion position.

In the wind instrument 1 of the present embodiment, the dimension (height dimension) of the extension direction of the convex portion 20 extending inwardly from the inner peripheral surface 13 of the main pipe 3 is set in consideration of how easy the foreign matter O in the curved pipe portion 12 passes. .

Specifically, within the range that can be inserted into the main pipe 3, the size of the foreign matter O (the diameter of the spherical foreign matter O) is larger, and the curvature of the curved pipe portion 12 is larger (the radius of curvature is smaller), and the foreign matter O is larger. It is more difficult to pass in the curved pipe section 12 . That is, the foreign matter O tends to stagnate in the bent pipe portion 12 . On the other hand, the height dimension of the convex part 20 is set so that only the foreign object O of the size which can easily pass through the curved pipe part 12 can pass through a convex part position.

According to the wind instrument 1 of the present embodiment configured as described above, the intrusion of foreign matter O into the main pipe 3 can be suppressed by having the convex portion 20 extending inwardly from the inner peripheral surface 13 of the main pipe 3 . In particular, in the present embodiment, it is possible to prevent foreign matter O having a predetermined size or more from passing through the convex portion position in the main pipe 3 .

In addition, according to the wind instrument 1 of the present embodiment, the cross-sectional area inside the main pipe 3 (the cross section perpendicular to the axial direction of the main pipe 3 ) due to the installation of the convex portion 20 can be compared with the case where a filter is provided as in the past. area) changes are suppressed to be small. Therefore, the influence on the acoustic characteristics of the wind instrument 1 due to the arrangement of the convex portion 20 can be suppressed to be small. The cross-sectional area inside the main pipe 3 means, for example, an actual cross-sectional area (cross-sectional area of a flow path) through which gas can flow in the main pipe 3 in the axial direction of the main pipe 3 .

In addition, according to the wind instrument 1 of the present embodiment, even if the convex portion 20 is provided, the cloth (cotton swab) for maintaining the inside of the main tube 3 can easily pass through the convex portion position. That is, maintenance of the main pipe 3 can be easily performed.

In addition, according to the wind instrument 1 of the present embodiment, the plurality of convex portions 20 are arranged at intervals along the circumferential direction of the main tube 3 . When there are a plurality of protrusions 20 , the height of the protrusions 20 required to prevent foreign matter O having a predetermined size or larger from passing through the positions of the protrusions can be kept smaller than when there is one protrusion 20 . That is, the change in the cross-sectional area of the main pipe 3 due to the provision of the convex portion 20 can be suppressed to be smaller. Therefore, the influence on the acoustic characteristics of the wind instrument 1 can be suppressed to be smaller.

In addition, according to the wind instrument 1 of the present embodiment, the convex portion 20 is disposed on the opening end 9 side of the main pipe 3 rather than the curved pipe portion 12 . Therefore, entry of the foreign matter O into the bent pipe portion 12 can be effectively suppressed.

In addition, according to the wind instrument 1 of the present embodiment, the foreign matter O having a size that can pass through the position of the convex portion can easily pass through the bent pipe portion 12 . Therefore, even if the foreign matter O enters the bent pipe portion 12 , the foreign matter O can be easily extracted from the main pipe 3 . Therefore, it is possible to prevent the foreign matter O from stagnating in the main tube 3 , thereby preventing the performance of the wind instrument 1 from being hindered by the foreign matter O.

In addition, according to the wind instrument 1 of the present embodiment, the convex portion 20 is disposed closer to the opening end 9 of the main pipe 3 than the sound hole 5 located closest to the opening end 9 of the main pipe 3 . Therefore, the influence of the convex portion 20 on the acoustic characteristics of the wind instrument 1 can be suppressed to a minimum. Specifically, when the wind instrument 1 emits a scale other than the lowest scale, the part of the main pipe 3 closer to the opening end 9 than the sound hole 5 closed by the finger and key mechanism 6 functions as a resonance tube. Therefore, it is possible to prevent the convex portion 20 from affecting the pronunciation of musical scales other than the lowest scale in the wind instrument 1 .

In addition, according to the wind instrument 1 of the present embodiment, the convex portion 20 is arranged at the end portion in the width direction of the main pipe 3 in the inner peripheral surface 13 of the main pipe 3 . In particular, in this embodiment, a pair of convex parts 20 and 20 are arrange|positioned in the area|region of both ends of the width direction of the main pipe 3 in the inner peripheral surface 13 of the main pipe 3. Therefore, the convex portion 20 can be easily molded together with the above-mentioned divided structure of the main pipe 3 . In particular, mold ejection at the time of molding the divided structure can be easily performed. Therefore, the wind instrument 1 including the convex portion 20 can be easily manufactured.

In the first embodiment, three protruding protrusions 20 may be arranged at equal intervals in the circumferential direction of the main tube 3 as shown in FIG. 4A , for example. In this case, compared with the case where there are two convex portions 20 , the height dimension of the convex portion 20 required to prevent foreign objects O having a predetermined size or larger from passing through the convex portion positions can be suppressed to be smaller. Moreover, compared with the case where four or more convex parts 20 are arranged, the change in the cross-sectional area in the main pipe 3 due to the installation of the convex parts 20 can be suppressed to be small. Therefore, the influence on the acoustic characteristics of the wind instrument 1 can be suppressed to the minimum.

In addition, for example, as shown in FIG. 4B , one protruding convex portion 20 may be arranged at only one place in the circumferential direction of the main tube 3 . In this case, although the convex part 20 may be located in the width direction center of the main pipe 3 as shown in the figure, it may be located in the width direction end part of the main pipe 3 similarly to the said 1st Embodiment, for example.

In addition, the protrusion-shaped convex part 20 may be formed continuously in the axial direction of the main pipe 3, for example. In this case, since the cross-sectional area inside the main pipe 3 in the axial direction of the main pipe 3 does not change, the acoustic characteristics of the wind instrument 1 can be easily set when the wind instrument 1 is manufactured. In addition, the main pipe 3 can be easily manufactured.

In addition, a rod-shaped convex portion 20A extending inward from the inner peripheral surface 13 of the main pipe 3 may be disposed on the inner peripheral surface 13 of the main pipe 3 , for example, as shown in FIGS. 5A and 5B .

The rod-shaped convex portion 20A illustrated in FIG. 5A extends from a predetermined position in the circumferential direction of the inner peripheral surface 13 of the main tube 3 to the inside of the main tube 3 and reaches another position on the inner peripheral surface 13 . In the illustrated example, the rod-shaped convex portion 20A intersects the pipe axis of the main pipe 3 , but the present invention is not limited thereto. Although only one rod-shaped convex portion 20A illustrated in FIG. 5A is provided, a plurality of rod-shaped convex portions 20A may be provided, for example. In this case, the plurality of rod-shaped protrusions 20A may or may not intersect, for example.

In the configuration illustrated in FIG. 5B , a plurality of (three in the illustrated example) rod-shaped protrusions 20A are connected to each other on the basis of extending to the pipe axis of the main pipe 3 .

In the case of the rod-shaped convex portion 20A, compared with the case of the protrusion-shaped convex portion 20A, the size of the foreign matter passing through the convex portion position can be set to be smaller.

The number of rod-shaped protrusions 20A is arbitrary, but it is preferable to be less in consideration of the ease of maintenance of the main pipe 3 (the degree of passage of the swab in the main pipe 3 ).

The protrusions 20 and 20A illustrated in FIGS. 2 to 5 may have elasticity, for example. In addition, the protruding convex portion 20 may be formed, for example, in an elastically deformable needle shape.

[Second Embodiment]

Next, a second embodiment of the present invention will be described with reference to FIG. 6 . Compared with the wind instrument 1 of the first embodiment, the wind instrument of the present embodiment differs only in a part of the configuration of the main pipe and the arrangement of the protrusions, and is the same in other configurations. In the present embodiment, the same reference numerals and the like are attached to the same components as those in the first embodiment, and description thereof will be omitted.

As shown in FIG. 6 , in the wind instrument 1B of this embodiment, the main pipe 3B of the tubular body 2B has a tapered pipe portion 14B whose inner diameter becomes larger toward the opening end 9 of the main pipe 3B. That is, the tapered pipe portion 14B constitutes the opening end 9 of the main pipe 3B of the present embodiment.

In the illustrated example, the curved pipe portion 12 is connected to the tapered pipe portion 14B, but for example, a straight pipe portion may be connected. Although not shown, the sound hole of the main pipe 3B may be formed only in the curved pipe part 12, for example, or may be formed in both the curved pipe part 12 and the tapered pipe part 14B.

The convex part 20 with which the wind instrument 1B of this embodiment is equipped is arrange|positioned on the inner peripheral surface 13 of the main pipe 3B similarly to 1st Embodiment. However, in this embodiment, the convex part 20 is arrange|positioned in the position where the inner diameter dimension is the smallest in the tapered tube part 14B. That is, the convex portion 20 is arranged at the connection portion between the tapered pipe portion 14B and the bent pipe portion 12 . In the illustrated example, the protrusion-shaped convex portion 20 illustrated in FIGS. 2 to 4 is provided on the tapered tube portion 14B, but it may also be provided on the rod-shaped convex portion 20A illustrated in FIGS. 5A and 5B , for example.

According to the wind instrument 1B of this embodiment, the same effect as that of the first embodiment can be achieved.

In addition, in the wind instrument 1B of the present embodiment, the convex portion 20 is arranged at a position where the inner diameter of the tapered pipe portion 14B is the smallest. Therefore, it is possible to effectively suppress foreign matter entering into the main pipe 3B from the opening end 9 from entering another pipe portion (bent pipe portion 12 ) of the main pipe 3B connected to the tapered pipe portion 14B.

[Third Embodiment]

Next, a third embodiment of the present invention will be described with reference to FIG. 7 . Compared with the wind instrument 1 of the first embodiment, the wind instrument of the present embodiment differs only in the arrangement of the protrusions, and is the same in other configurations. In the present embodiment, the same reference numerals and the like are attached to the same components as those in the first embodiment, and description thereof will be omitted.

As shown in FIG. 7 , the wind instrument 1C of the present embodiment includes a convex portion 20C extending inwardly from the inner peripheral surface 13 of the main pipe 3 , as in the first and second embodiments. However, the convex portion 20C of the present embodiment is arranged outside the opening end 9 of the main pipe 3 .

The convex portion 20C of the present embodiment is formed in a rod shape extending from the opening end 9 (flange portion 8 ) of the main pipe 3 toward the inner side of the inner peripheral surface 13 of the main pipe 3 . The rod-shaped protrusion 20C extends away from the opening end 9 of the main pipe 3 toward the inside of the main pipe 3 . That is, the convex portion 20C extends in a direction toward (approaching) the pipe axis L1 from the flange 8 of the main pipe 3 and in a direction away from the opening end 9 . As shown in FIG. 7 , the pipe axis L1 also includes a portion extending outward from the opening end 9 of the main pipe 3 , and the fact that the convex portion 20C extends in the direction of the pipe axis L1 is not limited to the inside of the main pipe 3 but also extends outward. extend.

In the configuration illustrated in FIG. 7 , as in the configuration shown in FIG. 5B , a plurality of (three in the illustrated example) rod-shaped protrusions 20C extend toward the tube axis L1 of the main pipe 3 to the tube axis L1. interconnected on a basic basis. In this embodiment, the rod-shaped protrusions 20C extend toward the tube axis L1 and are connected to each other, but they may not be connected to each other. In addition, the rod-shaped convex portion 20C may reach another position from a predetermined position in the circumferential direction of the main pipe 3 , for example, in the same manner as in the configuration shown in FIG. 5A .

According to the wind instrument 1C of this embodiment, the same effect as that of the first embodiment can be achieved.

In addition, according to the wind instrument 1C of the present embodiment, compared with the case where the convex portion 20C is provided in the main pipe 3 , the influence on the acoustic characteristics of the wind instrument 1C can be suppressed to be small.

The convex portion 20C of the present embodiment can also be applied to, for example, the wind instruments 1 and 1B of the first and second embodiments. For example, in the wind instruments 1 and 1B of the first and second embodiments, the convex portion 20C of the present embodiment may be provided separately from the convex portions 20 and 20A of the first and second embodiments.

As mentioned above, although this invention was demonstrated in detail, this invention is not limited to the said embodiment, Various changes can be added in the range which does not deviate from the summary of this invention.

In the wind instrument of the present invention, the convex portion may be provided, for example, on the sub-pipe.

The wind instrument of the present invention is not limited to a wind instrument having a sound hole such as a woodwind instrument, but can also be applied to a wind instrument having no sound hole such as a brass instrument.

Explanation of reference signs

1, 1B, 1C wind instruments

2. 2B tube body

3. 3B Supervisor

4 secondary pipes

5 sound holes

9 open end

12 Bend tube

13 inner peripheral surface

14B taper tube

20, 20A, 20C convex part

Claims (6)

1. a kind of wind instrument has tube body and more extends to the direction of the pipe axis towards the tube body than the inner peripheral surface of the tube body Protrusion.

2. wind instrument according to claim 1, wherein

The protrusion is arranged with multiple along the circumferentially spaced compartment of terrain of the tube body.

3. wind instrument according to claim 1 or 2, wherein

The tube body has sound hole,

The protrusion is configured at than the sound hole by the position of the open end side of the tube body.

4. wind instrument according to any one of claim 1 to 3, wherein

The tube body has the curved sections of pipe being bent in a manner of changing the direction of the pipe axis of the tube body,

The protrusion is configured at curved sections of pipe described in the ratio in the tube body by the position of the open end side of the tube body.

5. wind instrument according to any one of claim 1 to 4, wherein

The tube body has with towards the open end of the tube body and the Taper Pipe portion that makes internal diameter size become larger,

The protrusion is configured at the position of the internal diameter size minimum in the Taper Pipe portion.

6. wind instrument according to any one of claim 1 to 5, wherein

The protrusion is configured at the outside of the open end of the tube body.