JP2018006784A5

JP2018006784A5 -

Info

Publication number: JP2018006784A5
Application number: JP2016126212A
Authority: JP
Filing date: 2016-06-27
Publication date: 2019-06-20
Anticipated expiration: 2036-06-27

Description

本発明のイヤホンは、音声信号を音波に電気音響変換するスピーカーユニットと、その内部にスピーカーユニットを取り付けて、スピーカーユニットの振動板の一方側と他方側とにそれぞれ第１音響空間と第２音響空間とを規定するハウジングと、を備えるイヤホンであって、ハウジングが、第１音響空間に連通して音波をユーザーの外耳道に導く第１音響通路を形成するノズル部と、第２音響空間に連通して音波を外部空間に導く第２音響通路を形成するリークポート部と、を備え、リークポート部が、第２音響通路を構成する柔軟性を有する筒状材と、筒状材を屈曲させることなく第２音響空間を構成するハウジングの内壁部またはハウジングの外壁部に添って固定する固定部と、を有する。 The earphone according to the present invention has a speaker unit for electro-acoustic conversion of an audio signal to a sound wave, and a speaker unit mounted therein, and the first sound space and the second sound are respectively provided on one side and the other side of the diaphragm of the speaker unit. An earphone comprising: a housing defining a space, wherein the housing communicates with the first acoustic space to form a first acoustic passage for guiding a sound wave to the user's ear canal, and the second acoustic space And a leak port portion for forming a second acoustic passage for guiding the sound wave to the external space, wherein the leak port portion bends the tubular member having flexibility to constitute the second acoustic passage, and And a fixing portion fixed along the inner wall portion of the housing or the outer wall portion of the housing that constitutes the second acoustic space.

このイヤホンのハウジングは、第２音響空間に連通して音波を外部空間に導く第２音響通路を形成するリークポート部を備える。リークポート部は、第２音響通路を構成する柔軟性を有する筒状材と、筒状材を屈曲させることなく第２音響空間を構成するハウジングの内壁部またはハウジングの外壁部に添って固定する固定部と、を有する。中空の管状の部材である筒状材は、柔軟性を有するので、固定部が、筒状材を所定の形状に整形させるとともにハウジングに対して固定する。 The housing of the earphone includes a leak port portion communicating with the second acoustic space to form a second acoustic passage for guiding the acoustic wave to the external space. The leak port portion is fixed along the inner wall portion of the housing constituting the second acoustic space or the outer wall portion of the housing without bending the cylindrical member and the cylindrical member having the flexibility constituting the second acoustic passage. And a fixed part. Since the tubular material which is a hollow tubular member has flexibility, the fixing portion shapes the tubular material into a predetermined shape and fixes it to the housing.

また、本発明のイヤホンは、好ましくは、リークポート部の固定部が、第２音響空間を構成するハウジングの内壁部および／または外壁部に設けられて筒状材を収容する溝またはカバー部材を含む。ハウジングの内壁部および外壁部に筒状材をはめ込む溝を設ける固定部、あるいは、筒状材をカバー部材で固定する固定部を形成すれば、筒状材を屈曲させることなく所定の略円弧状に整形してハウジングに固定できる。その結果、リークポート部を形成する筒状材が屈曲したところで第２音響通路が閉じてしまう、または、狭くなるといった不具合を防止できる。筒状材をカバー部材でハウジングの外壁部に固定する場合には、カバー部材に意匠性を与えて美観に優れるイヤホンを実現できる。 Further, in the earphone according to the present invention, preferably, the fixing portion of the leak port portion is provided on the inner wall portion and / or the outer wall portion of the housing constituting the second acoustic space to receive the groove or the cover member for accommodating the tubular member. Including. By forming a fixing portion in which a groove for inserting a tubular material into an inner wall portion and an outer wall portion of a housing, or a fixing portion for fixing a tubular member by a cover member, a predetermined substantially arc shape can be obtained without bending the tubular member. Can be shaped and fixed to the housing. As a result, it is possible to prevent the problem that the second acoustic passage is closed or narrowed when the cylindrical material forming the leak port portion is bent. When the tubular member is fixed to the outer wall of the housing by the cover member, the cover member can be designed in design to realize an earphone with an excellent appearance.

また、リークポート部の第２音響通路は、第２音響空間または外部空間と連通する開口端部の開口面積が、その中間部での断面積よりも大きくなるように形成されていてもよい。例えば、リークポート部を形成する筒状材の開口端部を、斜めに切断することにより開口を楕円形状にすれば、開口面積をその中間部での断面積よりも大きくすることができ、リークポートとしての動作および効果を高めることができる。リークポート部の筒状材が、第２音響空間または外部空間と連通する開口端部に通気性を有する保護部材を更に備える場合には、開口端部から筒状材の内部に異物が混入して第２音響通路が閉じてしまう、または、狭くなるといった不具合を防止することができる。 In addition, the second acoustic passage of the leak port portion may be formed such that the opening area of the opening end communicating with the second acoustic space or the external space is larger than the cross-sectional area at the middle portion thereof. For example, if the opening end of the cylindrical member forming the leak port portion is obliquely cut to make the opening elliptical, the opening area can be made larger than the cross-sectional area at the middle portion, and the leak Operation and effect as a port can be enhanced. When the tubular member in the leak port portion further includes an air-permeable protective member at the open end communicating with the second acoustic space or the external space, foreign matter is mixed into the inside of the tubular member from the open end. It is possible to prevent the problem that the second sound path is closed or narrowed.

カナル型のイヤホン１においては、適切な音圧周波数特性を得るのに、細くて長い寸法の音響通路であるリークポート７を形成しなければならない。リークポート７は、ハウジング２の寸法に対比して極めて細くて長い部材であるので、ハウジング２に取り付けるのに、特に工夫を要する。本実施例の場合のように、長いリークポート７をハウジング２に収めるには、屈曲部を設けないようにして所定の形状に整形する必要がある。チューブが急激に折れ曲がる屈曲部ができてしまうと、そこで筒状材の内部が閉じてしまう、または、内部の面積が著しく狭くなるので、音響通路として機能しなくなるからである。 In the canal type earphone 1, in order to obtain an appropriate sound pressure frequency characteristic, it is necessary to form a leak port 7 which is a narrow and long sized acoustic passage. Since the leak port 7 is a very thin and long member in comparison to the dimensions of the housing 2, it is particularly necessary to attach the leak port 7 to the housing 2. As in the case of the present embodiment, in order to accommodate the long leak port 7 in the housing 2, it is necessary to form it into a predetermined shape without providing a bent portion. If the tube bends sharply, the inside of the cylindrical material is closed there, or the area of the inside becomes extremely narrow, so that the tube does not function as an acoustic passage.

なお、ハウジング２のリークポート７は、音響空間１８に連通して音波を外部空間に導く音響通路を、必ずしも柔軟な筒状材で形成しなくても、同程度の断面積を有する管部をハウジング部材１２の外壁部および内壁部を貫通するように設けることで代用してもよい。また、ハウジング部材１２に取り付けるカバー８を用いて、リークポート７に代わる音響通路を設けてもよい。また、リークポート７は、その全部を柔軟な筒状材で形成しなくても、一部を上記の様なハウジング部材１２の外壁部および内壁部を貫通する管部によって代用してもよい。リークポート７を長くすることができれば、音声再生周波数帯域を十分に広げて良好な再生音質を確保することができる。 The leak port 7 of the housing 2 is a pipe portion having the same cross-sectional area as the acoustic passage communicating with the acoustic space 18 and guiding an acoustic wave to the external space, even if not necessarily formed of a flexible cylindrical material. It may be substituted by providing it so that the outer wall part and inner wall part of the housing member 12 may be penetrated. Also, a cover 8 attached to the housing member 12 may be used to provide an acoustic passage instead of the leak port 7. Further, the leak port 7 may be substituted by a pipe portion penetrating the outer wall portion and the inner wall portion of the housing member 12 as described above without forming the whole of the leak port 7 with a flexible cylindrical material . If the leak port 7 can be made longer, it is possible to sufficiently widen the audio reproduction frequency band to ensure good reproduction sound quality.

また、リークポート７は、開口端部７ａおよび７ｃの開口面積が、チューブまたは筒状材を斜めに切断することにより、その中間部７ｂでの断面積よりも大きくなるように形成されていれば、リークポートとしての動作および効果を高めることができる。したがって、リークポート７を異なる太さの筒状材を連結するようにして形成してもよい。 In addition, leak port 7 is formed so that the opening area of opening ends 7a and 7c is larger than the cross-sectional area of intermediate portion 7b by obliquely cutting the tube or the cylindrical member. Operation and effect as a leak port can be enhanced. Therefore, the leak port 7 may be formed by connecting tubular materials having different thicknesses.

Claims

A speaker unit that electroacoustically converts audio signals into sound waves;
An earphone comprising: a speaker unit attached inside the housing; and a housing defining a first acoustic space and a second acoustic space on one side and the other side of a diaphragm of the speaker unit,
A nozzle portion forming a first acoustic passage communicating with the first acoustic space to guide the acoustic wave to the user's ear canal; and a second acoustic passage communicating with the second acoustic space to guide the acoustic wave to the external space And a leak port portion to form a
The leak port portion is a cylindrical member having a flexibility constituting the second acoustic passage, and an inner wall portion of the housing or the outer wall of the housing constituting the second acoustic space without bending the cylindrical member. And a fixing part fixed along the part;
earphone.

A speaker unit that electroacoustically converts audio signals into sound waves;
An earphone comprising: a speaker unit attached inside the housing; and a housing defining a first acoustic space and a second acoustic space on one side and the other side of a diaphragm of the speaker unit,
A nozzle portion forming a first acoustic passage communicating with the first acoustic space to guide the acoustic wave to the user's ear canal; and a second acoustic passage communicating with the second acoustic space to guide the acoustic wave to the external space And a leak port portion to form a
The leak port portion, the second acoustic space, form the second acoustic path by winding the tubular member in a spiral,
Earphone.

The fixing portion of the leak port portion includes a groove or a cover member provided on the inner wall portion and / or the outer wall portion of the housing constituting the second acoustic space to receive the tubular material.
The earphone according to claim 1 or 2.

The second acoustic passage of the leak port portion is formed such that an opening area of an opening end communicating with the second acoustic space or the external space is larger than a cross-sectional area at an intermediate portion thereof.
The earphone according to any one of claims 1 to 3.

The cylindrical member of the leak port portion further includes an air-permeable protective member at an open end communicating with the second acoustic space or the external space.
The earphone according to any one of claims 1 to 4.

The housing further comprising a cord connection for connecting a cord supplying the audio signal to the speaker unit;
The earphone according to any one of claims 1 to 5.

The housing includes an earpiece attachment portion for attaching an earpiece to be inserted into the user's ear canal at a tip end of the nozzle portion;
Further comprising the earpiece attached to the earpiece attachment portion;
The earphone according to any one of claims 1 to 6.

A speaker unit that electroacoustically converts audio signals into sound waves;
An earphone comprising: a speaker unit attached inside the housing; and a housing defining a first acoustic space and a second acoustic space on one side and the other side of a diaphragm of the speaker unit,
A nozzle portion forming a first acoustic passage communicating with the first acoustic space to guide the acoustic wave to the user's ear canal; and a second acoustic passage communicating with the second acoustic space to guide the acoustic wave to the external space And a leak port portion to form a
The leak port portion spirally winds a tubular material in the second acoustic space to form the second acoustic passage.
earphone.