阅读说明：本技术 弱音装置 (Mute device ) 是由 井上得一 于 2018-01-23 设计创作，主要内容包括：本发明的课题在于提供一种在演奏常规乐器时,尽量避免与该演奏的感觉不同的弱音装置。该弱音装置具有：安装部,安装于通过使呼气流通而振动簧片以产生声音的乐器,且具备用于流通所述簧片所产生的声音的取入部；及弱音部,安装于所述安装部,且具备使从所述取入部取入的声音经过并降低该声音的音量的通路部,所述通路部其截面阶段性地或连续地减少。(The invention provides a mute device which avoids the feeling different from the playing feeling as much as possible when playing the conventional musical instrument. The mute apparatus includes: an attachment unit attached to a musical instrument that generates sound by vibrating a reed by flowing breath, the attachment unit including an intake unit through which the sound generated by the reed flows; and a mute section attached to the attachment section and including a passage section for passing the sound taken in from the taking section and reducing the volume of the sound, the passage section having a cross section that decreases stepwise or continuously.)

1. A mute apparatus, comprising:

an attachment unit attached to a musical instrument that generates sound by vibrating a reed by flowing breath, the attachment unit including an intake unit through which the sound generated by the reed flows; and

a mute section attached to the attachment section and including a passage section for passing the sound taken in from the taking-in section and reducing the volume of the sound,

the passage portion has a cross section that decreases stepwise or continuously.

2. The mute apparatus according to claim 1,

the mounting portion has a mounting upper portion and a mounting lower portion.

3. Mute apparatus according to claim 1 or 2,

the sound attenuating portion includes a plurality of units, at least one of the units includes a thin-plate, truncated-circle-shaped side member and a wall portion, and the passage portion is formed by the side member and the wall portion and has a shape that winds in a spiral shape from an outside toward an inside of the unit.

4. The mute apparatus according to claim 1,

the mute section has an upper mute member and a lower mute member,

the upper mute also has at least a plurality of upper barrier portions,

the lower mute also has at least a plurality of lower barrier portions,

the passage portion is configured by a combination of the upper barrier portions and the lower barrier portions being shifted from each other.

Technical Field

The present invention relates to a mute apparatus used in a musical instrument, which can reduce the volume of sound emitted from the musical instrument.

Background

As a so-called musical instrument using a reed to generate sound, there is a so-called woodwind instrument or brass instrument. These musical instruments can reduce the sound volume by restricting the vibration of the reed by reducing the inflow amount of air for vibrating the reed. Such a device is used in consideration of noise when practicing the musical instrument.

As such a device, japanese patent No. 6101867 discloses a mute device capable of reducing the sound volume. The device is a device which can be installed on the oxkalina flute and is related to a mute device, and discloses a breath pressure adjusting mute device which is arranged at a blowing hole of a blowing instrument, and is characterized in that a breath escape hole and a breath channel width control part are arranged before the breath reaches the blowing instrument and before the blowing hole of the blowing instrument. ".

As described above, although the mute apparatus is disclosed which limits the amount of air flowing into the musical instrument in advance to reduce the volume of generated sound, when the amount of air flowing into the musical instrument is limited in practice for playing the musical instrument, the user feels different from the user originally playing the musical instrument, and thus the mute apparatus is not suitable for practice for the musical instrument.

Prior art documents

Patent document

Patent document 1: japanese patent No. 6101867

Disclosure of Invention

Technical problem to be solved by the invention

The present invention has been made in view of the above problems, and an object thereof is to provide a mute apparatus which avoids a feeling different from that of a user playing a conventional musical instrument as much as possible.

Means for solving the technical problem

As a result of intensive research and development, in order to solve the above-described problems, the mute apparatus according to claim 1 includes: an attachment unit attached to a musical instrument that generates sound by vibrating a reed by flowing breath, the attachment unit including an intake unit through which the sound generated by the reed flows; and a mute section attached to the mounting section and including a passage section for passing the sound taken in from the taking-in section and reducing the volume of the sound, wherein the cross section of the passage section is gradually or continuously reduced.

In the mute apparatus according to claim 2, in claim 1, the mounting portion has a mounting upper portion and a mounting lower portion.

In the muting device according to claim 3, in claim 1 or 2, the muting portion includes a plurality of units, at least one of the plurality of units includes a thin, round-off side member and a wall portion, and the passage portion is formed by the side member and the wall portion and is formed in a shape that winds in a spiral from the outside toward the inside of the unit.

In the mute apparatus according to claim 4, in claim 1, the mute section includes an upper mute member and a lower mute member, the upper mute member further includes at least a plurality of upper barrier portions, the lower mute member further includes at least a plurality of lower barrier portions, and the plurality of upper barrier portions and the plurality of lower barrier portions are combined by being shifted from each other to constitute the passage section.

Effects of the invention

The present invention is configured and functions as described above, and therefore can provide a mute apparatus which does not have a different playing feeling from the conventional one when playing a musical instrument.

Drawings

Fig. 1 is a perspective view of a state in which the mute apparatus of embodiment 1 is mounted on a musical instrument.

A of fig. 2 is a top view of the instrument. B is a front view of the instrument. C is a bottom view of the instrument.

Fig. 3 is an exploded perspective view of the mute apparatus in the 1 st embodiment in a state of being mounted on the musical instrument.

A of fig. 4 is a rear view as viewed from the rear in a state where the mounting portion is mounted in the musical instrument. B is a plan view of the instrument with the mounting portion attached thereto. C is a sectional view taken along line IVC-IVC of B.

Fig. 5a is a perspective view of the mounting upper portion. And B is a top view of the mounting upper portion. C is a bottom view of the mounting upper portion. D is a side view of the mounting upper portion.

Fig. 6 a is a perspective view of the lower portion. And B is a top view of the mounting lower part. And C is a bottom view of the lower mounting part. D is a side view of the lower mounting portion.

Fig. 7 is an exploded perspective view of the mute section.

Fig. 8 a is a perspective view of the unit. B is a left side view of the cell. C is the right side view of the cell. D is the front view of the cell.

Fig. 9 is a perspective view of a state in which the mute apparatus of embodiment 2 is mounted on a musical instrument.

Fig. 10 is a rear view of a state as viewed from the rear in a state where the mute apparatus of embodiment 2 is mounted on the musical instrument.

Fig. 11 is a cross-sectional view taken along line XI-XI of fig. 9.

Fig. 12 is an exploded perspective view of the mute apparatus and the musical instrument according to embodiment 2.

Fig. 13 a is a perspective view of the integrated 2 nd installation upper part and upper mute part. And B is a top view of the integrated 2 nd installation upper and upper mute member. And C is a side view of the integrated 2 nd installation upper and upper mute member. D is a bottom view of the integrated 2 nd installation upper and upper mute member.

Fig. 14 a is a perspective view of the integrated 2 nd mounting lower part and lower part mute member. And B is a top view of the integrated 2 nd mounting lower part and lower part mute. And C is a side view of the integrated 2 nd mounting lower part and lower part mute. D is a bottom view of the integrated 2 nd mounting lower part and lower part mute member.

Detailed Description

The mute apparatus 10 according to embodiment 1 will be explained. The muting device 10 in embodiment 1 is a device that is used after being attached to the musical instrument 100, and is a device that reduces the volume of sound emitted from the musical instrument 100, so-called, mutes the sound. The mute apparatus 10 includes an attachment portion 20 to be attached to the musical instrument 100, and a mute portion 30 (see fig. 1) which is attached to the attachment portion 20 and which attenuates the sound volume generated by the musical instrument 100.

The musical instrument 100 is preferably a harmonica, and includes, on the upper and lower sides of a main body 110, not shown, a blow reed 121a that sounds when a user blows air and a suction reed 122a that sounds when the user sucks air. The air-blowing reed 121a and the air-suction reed 122a are arranged to generate a sound by blowing or sucking air to a user not shown in the one opening 111a serving as a blowing hole.

Further, the opening 111b to be the blow hole adjacent to the one opening 111a to be the blow hole is separated from the one opening 111a by a partition wall, and the blow reed 121b and the suction reed 122b are disposed in each opening. Similarly, the adjacent openings 111c are separated by partition walls, and a blowing reed 121c and an intake reed 122c are disposed in each opening. The adjacent openings 111d are also separated by the partition wall, and the air-blowing reed 121d and the air-suction reed 122d are disposed in each opening. Hereinafter, similarly, the openings 111e, 111f, 111g, 111h, 111i, and 111j are also provided with the air-blowing reeds 121e, 121f, 121g, 121h, 121i, and 121j and the air- suction reeds 122e, 122f, 122g, 122h, 122i, and 122j, respectively, and generate sounds of different scales (see fig. 2). In addition, they are known for their structure. Note that ten openings 111a, 111b, 111c, 111d, 111e, 111f, 111g, 111h, 111i, and 111j in the musical instrument 100 are provided, but the present invention is not limited to these.

The mounting portion 20 has a mounting upper portion 210 and a mounting lower portion 220. The mounting upper portion 210 is, literally, a cover that can be mounted to the upper portion of the musical instrument 100 using fasteners such as screws. Therefore, it can be mounted so as to cover the upper part of the musical instrument 100. Therefore, it is preferably substantially the same shape as the musical instrument 100.

The upper mounting portion 210 of the mounting portion 20 includes upper receiving portions 211a, 211b, 211c, 211d, 211e, 211f, 211g, 211h, 211i, and 211j for receiving sounds generated by the blowing reeds 121a, 121b, 121c, 121d, 121e, 121f, 121g, 121h, 121i, and 121j of the musical instrument 100. Connection portions 215 and 215 for connection to the mute section 30 are disposed at both ends thereof. Each of the upper intake portions is a passage which is independent and surrounded by a wall when attached to the musical instrument 100. Therefore, the upper intake sections 211a, 211b, 211c, 211d, 211e, 211f, 211g, 211h, 211i, and 211j function as passages for transmitting the sound generated by the respective air-blowing reeds to the mute section 30.

The mounting upper portion 210 has a plurality of hook-shaped engaging upper portions 216 when viewed in cross section. One of the engaging upper portions 216 is a portion for connection, which engages with the cell engaging upper portion 331 of the cell 310a of the mute section 30. As will be described later, the same applies to the other cells 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i, and 310 j.

As a letter, the mounting lower portion 220 is a cover that can be attached to the lower portion of the musical instrument 100 by using fasteners such as screws. Therefore, it can be mounted so as to cover the lower part of the musical instrument 100. Therefore, it is preferably substantially the same shape as the musical instrument 100.

The lower mounting portion 220 of the mounting portion 20 includes receiving portions 221a, 221b, 221c, 221d, 221e, 221f, 221g, 221h, 221i, and 221j for receiving sounds generated by the respective suction reeds 122a, 122b, 122c, 122d, 122e, 122f, 122g, 122h, 122i, and 122j of the musical instrument 100. Further, at both ends thereof, 2 nd connection parts 225 and 225 for connection to the mute part 30 are disposed. Each of the above-described take-down portions is a passage which is independent and surrounded by a wall when attached to the musical instrument 100. Therefore, the take-down sections 221a, 221b, 221c, 221d, 221e, 221f, 221g, 221h, 221i, and 221j function as passages for transmitting the sound generated by the suction reed to the mute section 30.

The mounting lower portion 220 has an engaging lower portion 226 having a hook shape in a sectional view. This engaging lower portion 226 is a portion for engaging with and connecting to the unit engaging lower portion 332 of the unit 310a of the mute section 30. As will be described later, the same applies to the other cells 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i, and 310 j.

The mute section 30 includes a plurality of cells 310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i, and 310 j. The portions pass through the openings 111a, 111b, 111c, 111d, 111e, 111f, 111g, 111h, 111i, and 111j in the musical instrument 100 and correspond to the capturing portions 211a, 211b, 211c, 211d, 211e, 211f, 211g, 211h, 211i, and 211j in the upper mounting portion 210 and the capturing portions 221a, 221b, 221c, 221d, 221e, 221f, 221g, 221h, 221i, and 221j in the lower mounting portion 220, respectively. The correspondence here means that when the user blows or sucks air to the taking-in portion 211a in the mounting upper portion 210, the blowing reed 121a or the suction reed 122a makes a sound. At this time, when the air-blowing reed 121a makes a sound, the upper intake portion 211a of the mounting upper portion 210 of the mounting portion 20 takes in the sound and transmits the sound to the unit 310a described later, and when the air-suction reed 122a makes a sound, the lower intake portion 221a of the mounting lower portion 220 of the mounting portion 20 takes in the sound and transmits the sound to the unit 310a described later. In this way, each unit is disposed to take in the sound emitted from each of the blowing reed and the suction reed.

Therefore, the unit 310a corresponds to the upper receiving portion 211a of the upper mounting portion 210 and the lower receiving portion 221a of the lower mounting portion 220, and therefore the unit 310a can receive the sound generated by the air-blowing reed 121a and the air-suction reed 122 a.

That is, the unit 310a can take in the sound generated by the air-blowing reed 121a and the air-suction reed 122a from the upper taking-in part 211a in the upper mounting part 210 and the lower taking-in part 221a in the lower mounting part 220. Further, the volume of the captured sound can be reduced. Similarly, the unit 310b can take in the sound generated by the air-blowing reed 121b and the air-suction reed 122b while corresponding to the upper taking-in section 211b in the upper mounting section 210 and the lower taking-in section 221b in the lower mounting section 220. Further, the volume of the captured sound can be reduced. The same applies to 310c, 310d, 310e, 310f, 310g, 310h, 310i, and 310 j.

Since the cells 310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i, and 310j have the same configuration, the configuration of the cell 310a will be described (see fig. 8), and the description of the other cells 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i, and 310j will be omitted.

The unit 310a is in a shape of a circular segment as a whole in a side view, and the unit opening 320 is connected to the upper intake part 211a in the upper mounting part 210 and the lower intake part 221a in the lower mounting part 220, and has a size capable of simultaneously taking in sounds generated from the air-blowing reed 121a and the air-suction reed 122a, respectively. That is, the upper mounting portion 210 and the lower mounting portion 220 are mounted on the musical instrument 100 without a gap.

In the thin and round side member 311 and the side member 311, the passage 322 formed by the side member 311 and the wall-shaped wall portion 321 is formed in a spiral shape wound from the outside toward the inside in a side view, and the distances z1, z2, z3, and z4 between the wall portions 321 are gradually closer toward the inside. That is, the cross section of the passage portion 322 continuously decreases. The spiral center portion formed by the wall 321 has a hole 330 serving as a hole through which sound can be transmitted. In this manner, the cross section of the passage portion 322 may gradually decrease as the distance gradually decreases toward the inside.

On the opposite side of the side member 311 from the wall portion 321, a substantially semicircular connecting portion 312 having a gap in the middle is disposed so as to be the outer shape of the trim side member 311, and the connecting portion 312 has a wall shape slightly protruding outward (on the opposite side). For fitting with an outer lid portion 350 described later. Similarly, the adjacent other cell 310b also has a connection portion 312, and the connection portion 312 is used to connect to the adjacent cell 310a, and the cell 310a is connected to the other cell 310b by being fitted to the wall portion 321 in the adjacent cell 310 a. As described above, the unit engaging upper portion 331 is engaged with the one engaging upper portion 216 of the mounting upper portion 210, which is hook-shaped in cross-sectional view, and is a portion for connection. The unit engaging lower portion 332 is engaged with the engaging lower portion 226 of the mounting lower portion 220, and is a portion for connection.

The mute section 30 further has outer lid sections 350, 350 and a middle lid section 360. The outer lid 350 is a circular segment in side view as a whole, and has an outer lid opening 351 serving as a vent hole. The outer lid 350 has an outer lid hole portion 352 as a hole at the center thereof, and a mandrel 370 described later is inserted therein. The cover 350 is formed in a semicircular shape, has a wall 353 surrounding the periphery of the cover 350, and is fitted to the connection portion 312 of the cell 310 a. The outer cover 350 has attached parts 355, 355 that engage with the connecting parts 215, 215 in the upper attachment part 210 of the attachment part 20 and the 2 nd connecting parts 225, 225 in the lower attachment part 220 of the attachment part 20.

The middle cover portion 360 is a thin plate and has a substantially semicircular shape as a whole, and is connected to the unit 310a, so that it stands upright with the semicircular shape of the trim cover portion 360, and is connected to the substantially semicircular unit connecting portion 361 and the outer cover portion 350, so that it stands upright with the semicircular shape of the trim cover portion 360, and has a substantially semicircular outer cover connecting portion 362. When combined with the outer lid 350, the middle lid opening 363 forms an outer lid opening 351 and one opening that serve as a vent hole. The middle lid portion 360 has a middle lid hole 364 serving as a hole at substantially the center thereof.

The outer lid 350, the units 310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i, and 310j, the middle lid 360, and the outer lid 350 having the above-described configuration are arranged in this order, and the core 370 is inserted so as to penetrate the centers of the outer lid, and is fixed by the nut 371, thereby forming the mute section 30 (see fig. 7). That is, the core shaft 370 is inserted so as to penetrate the holes 330, the middle cap hole 364, and the outer cap holes 352 and 352 in the units 310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i, and 310j, and is fixed by the nut 371. At this time, since the diameter of each hole 330 is larger than the diameter of the stem 370, for example, a sound whose sound volume is sufficiently reduced and which is muted can propagate from the hole 330 in the unit 310a to the adjacent unit 310b through each hole 330 in the units 310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i, and 310j, propagate through the middle cap hole 364, and leak from the middle cap opening 363 and the outer cap opening 351 serving as a ventilation hole.

The mute apparatus 10 of the above-described configuration is attached to the musical instrument 100. When a user, not shown, blows air into the opening 111a serving as a blow hole, for example, the blow reed 121a vibrates and generates a sound. The sound propagates to the upper intake part 211a and enters the passage part 322 of the unit 310a in the mute part 30. As described above, the passage portions 322 are formed in a shape wound in a spiral shape from the outside toward the inside, and the distances z1, z2, z3, and z4 between the wall portions 321 are gradually closer toward the inside, so that when the sound volume is gradually reduced by the gradually decreasing cross-section of the passage portions 322, and sound leaks from the hole portion 330 in the cell 310a, sound attenuation is achieved. The sound attenuated is propagated through the holes 330 in the units 310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i, and 310j, and is propagated through the middle cap hole 364, and can leak from the middle cap opening 363 and the outer cap opening 351 serving as a vent hole. In this way, when sound leaks from the middle cap opening 363 and the outer cap opening 351 serving as a vent hole, sufficient sound attenuation is achieved. The reason why the middle cap opening 363 and the outer cap opening 351 serving as the ventilation hole are opened is not only to make the sound made to be muted leak as described above, but also to vibrate the respective air-blowing springs and the respective air-suction springs so as not to hinder the inflow and outflow of air.

Also, the sound generated by the vibration of the suction reed 122a is substantially the same, and the sound propagates to the lower insertion portion 221a of the attachment lower portion 220 and enters the passage portion 322 of the unit 310a of the mute section 30. The rest is the same. The same applies to the other openings 111b, 111c, 111d, 111e, 111f, 111g, 111h, 111i, and 111 j. In this manner, by installing the mute apparatus 10 in the musical instrument 100, the volume of sound generated when the musical instrument is played can be reduced. As will be described later, the musical instrument 100 can be applied not only to a harmonica but also to a case where a keyboard harmonica or an accordion, not shown, is used.

Next, the mute apparatus 50 according to embodiment 2 will be explained. The muting device 50 in embodiment 2 is a device that is used after being attached to the musical instrument 100, and is a device that reduces the volume of the sound emitted from the musical instrument 100, so-called muting. The 2 nd mute apparatus 50 includes a 2 nd mounting part 60 to be mounted on the musical instrument 100 and a so-called 2 nd mute part 70 (see fig. 9) for attenuating the volume generated by the musical instrument 100. In the musical instrument 100, the same reference numerals are given to the already-described parts, and the description thereof is omitted.

The 2 nd mounting part 60 has a 2 nd mounting upper part 61 and a 2 nd mounting lower part 62. As a letter, the 2 nd mounting upper portion 61 is a cover that can be mounted on the upper portion of the musical instrument 100 using fasteners such as screws. Therefore, it can be mounted so as to cover the upper part of the musical instrument 100. The 2 nd mounting upper part 61 of the mounting part 60 has the 2 nd taking-in parts 61a, 61b, 61c, 61d, 61e, 61f, 61g, 61h, 61i, 61j which take in the sound generated by the respective blowing reeds 121a, 121b, 121c, 121d, 121f, 121g, 121h, 121i, 121j in the musical instrument 100. In addition, each of the 2 nd taking-in parts is an independent passage surrounded by a wall. Therefore, the 2 nd taking-in parts function as passages through which the sound generated by the blowing reeds is taken in and transmitted to the 2 nd mute part 70.

As a letter, the 2 nd mounting lower portion 62 is a cover that can be mounted to the lower portion of the musical instrument 100 using fasteners such as screws. Therefore, the instrument 100 can be attached to the lower part thereof in close contact therewith. The 2 nd mounting lower part 62 of the mounting part 60 has 3 rd intake parts 62a, 62b, 62c, 62d, 62e, 62f, 62g, 62h, 62i, 62j that take in sounds generated by the respective intake reeds 122a, 122b, 122c, 122d, 122e, 122f, 122g, 122h, 122i, 122j of the musical instrument 100. The 3 rd take-in portions are independent passages surrounded by walls. Therefore, the 3 rd intake parts function as passages through which the sound generated by the intake reed is transmitted to the 2 nd mute part 70.

The 2 nd mute unit 70 includes an upper mute member 71 and a lower mute member 72. The 2 nd mounting upper part 61 is integrated with the upper sound attenuating member 71, and the 2 nd mounting lower part 62 is integrated with the lower sound attenuating member 72. Which each form part of the housing.

The rear portion of the 2 nd mute unit 70 includes rear opening portions 77a, 77b, 77c, 77d, 77e, 77f, 77g, 77h, 77i, 77j serving as outlets for discharging sound via other passage portions 75a, 75b, 75c, 75d, 75e, 75f, 75g, 75h, 75i, 75j which are formed as passages by connecting the 2 nd capture portions 61a, 61b, 61c, 61d, 61e, 61f, 61g, 61j and the 3 rd capture portions 62a, 62b, 62c, 62d, 62e, 62f, 62g, 62i, 62j, respectively. The reason why the rear openings 77a, 77b, 77c, 77d, 77e, 77f, 77g, 77h, 77i, and 77j are opened is that not only sound made to be muted leaks as described above, but also air inflow and outflow are not hindered in order to vibrate the air-blowing reed and the air-suction reed.

The upper mute member 71 has parts of other passage portions 75a, 75b, 75c, 75d, 75e, 75f, 75g, 75h, 75i, 75j into which the sound from the 2 nd taking-in portions 61a, 61b, 61c, 61d, 61e, 61f, 61g, 61h, 61i, 61j flows. The lower mute 72 also has a part of other passage portions 75a, 75b, 75c, 75d, 75e, 75f, 75g, 75h, 75i, and 75j into which the sound from the 3 rd capturing portions 62a, 62b, 62c, 62d, 62e, 62f, 62g, 62h, 62i, and 62j flows. Therefore, the upper and lower sound attenuating members 71 and 72 are combined to form the other passage portions 75a, 75b, 75c, 75d, 75e, 75f, 75g, 75h, 75i, and 75 j. In fig. 13 and 14, other passage portions 75a, 75b, 75c, 75d, 75e, 75f, 75g, 75h, 75i, and 75j are shown, respectively, and they represent some of the other passage portions 75a, 75b, 75c, 75d, 75e, 75f, 75g, 75h, 75i, and 75 j.

The upper mute 71 is curved. Of course, it is not limited to this shape. The upper sound attenuating member 71 includes a plate-like 1 st upper barrier 76, 2 nd upper barrier 77, and 3 rd upper barrier 78. Then, the 1 st upper barrier portion 76, the 2 nd upper barrier portion 77, and the 3 rd upper barrier portion 78 are arranged in this order, and the distance that the upper mute member 71 hangs down becomes shorter. In addition, the 1 st upper barrier portion 76, the 2 nd upper barrier portion 77, and the 3 rd upper barrier portion 78 are also arranged at the same positions in the width direction in the other passage portions 75a, 75b, 75c, 75d, 75e, 75f, 75g, 75h, 75i, and 75j, respectively. The 1 st upper barrier portion 76, the 2 nd upper barrier portion 77, and the 3 rd upper barrier portion 78 are disposed to hang down from the upper sound attenuating member 71, but have a predetermined gap without contacting the lower sound attenuating member 72.

The lower mute 72 is curved. Of course, it is not limited to this shape. The lower sound attenuating member 72 includes a plate-like 1 st lower barrier portion 86, a plate-like 2 nd lower barrier portion 87, and a plate-like 3 rd lower barrier portion 88. The height from the lower mute member 72 gradually decreases in the order of the 1 st lower barrier portion 86, the 2 nd lower barrier portion 87, and the 3 rd lower barrier portion 88. The other passage portions 75a, 75b, 75c, 75d, 75e, 75f, 75g, 75h, 75i, and 75j are also arranged at the same positions so as to be aligned in the width direction. The 1 st lower barrier portion 86, the 2 nd lower barrier portion 87, and the 3 rd lower barrier portion 88 are arranged to stand independently from the lower sound attenuating member 72, but have a predetermined gap without contacting the upper sound attenuating member 71. As described above, the 1 st upper barrier portion 76, the 2 nd upper barrier portion 77, and the 3 rd upper barrier portion 78 are disposed to hang down from the upper sound attenuating member 71, but have a predetermined gap without contacting the lower sound attenuating member 72.

In this way, the other passage portion 75a passes through the gap between the 1 st lower barrier portion 86 and the upper mute member 71, the cross section (z10) of the 1 st lower barrier portion 86 and the 1 st upper barrier portion 76, the gap between the 1 st upper barrier portion 76 and the lower mute member 72, the cross section (z11) of the 1 st upper barrier portion 76 and the 2 nd lower barrier portion 87, and the gap between the 2 nd lower barrier portion 87 and the upper mute member 71, the cross section (z12) of the 2 nd lower barrier portion 87 and the 2 nd upper barrier portion 77, the gap between the 2 nd upper barrier portion 77 and the lower mute member 72, the cross section (z13) of the 2 nd upper barrier portion 77 and the 3 rd lower barrier portion 88, the gap between the 3 rd lower barrier portion 88 and the upper mute member 71, the cross section (z14) of the 3 rd lower barrier portion 88 and the 3 rd upper barrier portion 78, and the gap between the 3 rd upper barrier portion 78 and the lower mute member 72 reach the rear opening portion 77 a. The other passage portions 75a, 75b, 75c, 75d, 75e, 75f, 75g, 75h, 75i, and 75j are also the same.

Therefore, when the upper and lower sound attenuating members 71 and 72 having the above-described configuration are combined, for example, the other passage portion 75a passes over the 1 st lower barrier portion 86, the 1 st upper barrier portion 76, the 2 nd lower barrier portion 87, the 2 nd upper barrier portion 77, the 3 rd lower barrier portion 88, the 3 rd upper barrier portion 78, and reaches the rear opening portion 77 a. At this time, the distance z10 between the 1 st lower barrier portion 86 and the 1 st upper barrier portion 76, the distance z11 between the 1 st upper barrier portion 76 and the 2 nd lower barrier portion 87, the distance z12 between the 2 nd lower barrier portion 87 and the 2 nd upper barrier portion 77, the distance z13 between the 2 nd upper barrier portion 77 and the 3 rd lower barrier portion 88, and the distance z14 between the 3 rd lower barrier portion 88 and the 3 rd upper barrier portion 78 are arranged to gradually approach in stages at equal distances. That is, the above-described plurality of upper barrier portions and the plurality of lower barrier portions constitute the other passage portion 75a by being shifted and combined with each other, and the cross section (z10, z11, z12, z13, z14) of the other passage portion 75a gradually decreases. This can reduce the sound volume. The same applies to the other passage portions 75b, 75c, 75d, 75e, 75f, 75g, 75h, 75i, and 75 j. Further, as described above, the reason why the rear openings 77a, 77b, 77c, 77d, 77e, 77f, 77g, 77h, 77i, and 77j are opened is that not only the sound made to be muted leaks, but also the inflow and outflow of air are not hindered in order to vibrate the air-blowing reeds and the air-suction reeds.

The mute apparatus 50 of embodiment 2 constructed as described above is mounted on the musical instrument 100. When a user, not shown, blows air into the opening 111a serving as a blow hole, for example, the blow reed 121a vibrates and generates a sound. The sound propagates to the 2 nd intake portion 61a in the 2 nd mounting upper portion 61 of the 2 nd mounting portion 60, and enters the other passage portion 75a connected to the 2 nd intake portion 61a of the upper mute member 71 in the 2 nd mute portion 70. As described above, the other passage portion 75a exceeds the 1 st lower barrier portion 86, and passes through the 1 st upper barrier portion 76, and further exceeds the 2 nd lower barrier portion 87, and passes through the 2 nd upper barrier portion 77, and further exceeds the 3 rd lower barrier portion 88, and passes through the 3 rd upper barrier portion 78 to reach the rear opening portion 77 a.

At this time, the distance z10 between the 1 st lower barrier portion 86 and the 1 st upper barrier portion 76, the distance z11 between the 1 st upper barrier portion 76 and the 2 nd lower barrier portion 87, the distance z12 between the 2 nd lower barrier portion 87 and the 2 nd upper barrier portion 77, the distance z13 between the 2 nd upper barrier portion 77 and the 3 rd lower barrier portion 88, and the distance z14 between the 3 rd lower barrier portion 88 and the 3 rd upper barrier portion 78 are arranged to gradually approach in stages at equal distances. Therefore, the distance (z10, z11, z12, z13, z14) between the mute apparatus 50 gradually becomes closer toward the rear of the mute apparatus, and therefore the cross section of the other passage portion 75a gradually decreases. That is, the volume gradually decreases as the cross section of the other passage portion 75a gradually decreases, and when sound leaks from the rear opening 77a, the sound is attenuated. The sound generated by the vibration of the suction reed 122a is almost the same, and the sound propagates to the 3 rd intake part 62a of the lower mute member 72 and enters the other passage part 75a connected to the 3 rd intake part 62a of the lower mute member 72 of the 2 nd mute part 70. The rest is the same. The same applies to the other openings 111b, 111c, 111d, 111e, 111f, 111g, 111h, 111i, and 111 j. In this manner, by installing the mute apparatus 50 of embodiment 2 in the musical instrument 100, the volume of sound generated when the musical instrument is played can be reduced. The same applies to the case where the musical instrument 100 is particularly adapted to use a harmonica.

In addition, in the above-described embodiment, a harmonica is shown as an example of the musical instrument 100, but in addition to this, it can be used in a keyboard harmonica or an accordion. Further, since the respective blowing reed and the respective suction reed which become the sound source and the respective passage portions in the mute unit are independent, the sound from the sound source does not flow out to other portions, and can flow into the respective passage portions in the mute unit. In addition, the sound from a plurality of sound sources is not prevented from collectively flowing into one passage portion.

Description of the symbols

10-mute apparatus, 20-mounting section, 210-mounting upper section, 220-mounting lower section, 30-mute section, 310 a-unit, 311-side section, 321-wall section, 322-passage section, 50-mute apparatus of embodiment 2, 60-2 nd mounting section, 70-2 nd mute section, 71-upper mute section, 72-lower mute section, 75 a-other passage section, 76-1 st upper barrier section, 77-2 nd upper barrier section, 78-3 rd upper barrier section, 86-1 st lower barrier section, 87-2 nd lower barrier section, 88-3 rd lower barrier section.