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JP2009284490A - Acoustic device - Google Patents

Acoustic device Download PDF

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Publication number
JP2009284490A
JP2009284490A JP2009123375A JP2009123375A JP2009284490A JP 2009284490 A JP2009284490 A JP 2009284490A JP 2009123375 A JP2009123375 A JP 2009123375A JP 2009123375 A JP2009123375 A JP 2009123375A JP 2009284490 A JP2009284490 A JP 2009284490A
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Japan
Prior art keywords
lower cover
bottom wall
housing
acoustic device
side wall
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Pending
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JP2009123375A
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Japanese (ja)
Inventor
Hwang-Miaw Chen
皇妙 陳
hui-cheng Chen
輝城 陳
Shih-Chia Chiu
士嘉 邱
Cheng-Chia Pan
政佳 潘
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Foxconn Technology Co Ltd
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Foxconn Technology Co Ltd
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Publication of JP2009284490A publication Critical patent/JP2009284490A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
    • H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2884—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure
    • H04R1/2888—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an acoustic device (speaker) improved in tone. <P>SOLUTION: The acoustic device includes a shell made of magnesium alloy and a speaker disposed inside the shell. The shell defines a resonance chamber and a receiving chamber communicating therewith. The speaker is received in the receiving chamber. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、音響機器（スピーカー装置）に係わり、特に電子装置用音響機器に関する。   The present invention relates to an audio device (speaker device), and more particularly to an audio device for an electronic device.

近年、音楽配信サービスの発達等により、携帯電話や電子計算機などの電子装置にも音響機器が付設されている。   In recent years, due to the development of music distribution services and the like, acoustic devices are also attached to electronic devices such as mobile phones and electronic computers.

通常、音響機器は、筐体と、前記筐体の中に配置されたスピーカーと、を含む。スピーカーは、電気信号を構造振動に変換することにより、音波を発生させる。音響機器の音色は、スピーカー自身の特性である出力音圧、歪率、及び平坦性に起因するばかりでなく、スピーカーの外部に配置される筐体にも起因する。通常、音響機器の共鳴空間体積が大きければ大きいほど、その内部の空気のスピーカーからの音波に対する阻害作用も小さくなる。従って、スピーカーの共振周波数の最低限度が下がり、優れた低周波効果を発揮することができるので、さらに音響機器の音色を高める。   In general, the audio device includes a housing and a speaker disposed in the housing. The speaker generates sound waves by converting electrical signals into structural vibrations. The timbre of the acoustic device is not only due to the output sound pressure, distortion rate, and flatness, which are the characteristics of the speaker itself, but also due to the casing disposed outside the speaker. In general, the larger the resonance space volume of an acoustic device is, the smaller the inhibitory action of sound inside the sound from the speaker is. Accordingly, the minimum level of the resonance frequency of the speaker is lowered, and an excellent low frequency effect can be exhibited.

現在、音響機器の筐体は、熱可塑性樹脂で射出成形して形成されるので、剛性が低い。音響機器の筐体の剛性を高めて、音響機器の変形を防止するための方法として、筐体の内壁に複数本の補強筋を配置する方法、又は筐体の厚さを増加方法がある。しかし、これらの方法は全て、筐体内の共鳴空間キャビティ体積を縮小させるため、音響機器の音色を悪化させてしまう。   Currently, the housing of an acoustic device is formed by injection molding with a thermoplastic resin, and thus has low rigidity. As a method for increasing the rigidity of the housing of the acoustic device and preventing the deformation of the acoustic device, there are a method of arranging a plurality of reinforcing bars on the inner wall of the housing or a method of increasing the thickness of the housing. However, all of these methods reduce the volume of the resonance space cavity in the housing, which deteriorates the timbre of the acoustic device.

熱可塑性樹脂で射出成形された音響機器筐体は、射出成形過程にシュリンクや変形などの問題、筐体の伝熱性能が低いためスピーカーが作動する時に生じる熱量を放熱し難い問題、且つ音波の定在波による干渉が発生し易く、電気信号の入力が停止される時に音波残存時間がより長くなるという問題が存在する。また、熱可塑性樹脂で成形された音響機器筐体は、磁性の漏れを防止する効果も良くない。   Acoustic equipment casings that are injection-molded with thermoplastic resin have problems such as shrinkage and deformation during the injection molding process. There is a problem that interference due to standing waves is likely to occur, and the sound wave remaining time becomes longer when the input of an electric signal is stopped. In addition, an acoustic device casing formed of a thermoplastic resin is not good in preventing magnetic leakage.

本発明の目的は、前記課題を解決し、音色に優れた音響機器を提供することである。   An object of the present invention is to solve the above-described problems and provide an acoustic device having excellent timbre.

前記目的を達成するため、本発明に係る音響機器は、マグネシウム合金材料からなる筐体と、前記筐体内に配置されたスピーカーと、を備え、前記筐体内に互いに連通する共鳴空間と収容空間とが形成され、前記スピーカーが前記収容空間に配置される。   In order to achieve the above object, an acoustic device according to the present invention includes a housing made of a magnesium alloy material and a speaker disposed in the housing, and a resonance space and a housing space that communicate with each other in the housing. And the speaker is disposed in the housing space.

本発明に係る音響機器において、前記筐体はマグネシウム（Ｍｇ）合金から構成されるため、高い機械的強度を有する。故に、その内壁に複数本の補強筋を配置させる、又はその厚さを厚くする必要がない。従って、前記筐体内の共鳴空間の体積が増加し、低周波効果に優れる共に音響機器の音色も向上できる。また、マグネシウム（Ｍｇ）合金から構成された筐体は、音波の定在波による干渉の発生を防止することができる。従って、電気信号の入力が停止される時の、音波残存時間を短縮することができる。なお、マグネシウム（Ｍｇ）合金は放熱性能が良いので、スピーカーが作動する時に発生した熱量を素早く放熱することができ、故に高すぎる熱量が音色に与える影響を防止できる。また、マグネシウム（Ｍｇ）合金からなる筐体は、磁性漏れの点でも、熱可塑性樹脂からなる筐体より約４０%の防止効果を期待できる。   In the acoustic device according to the present invention, since the casing is made of a magnesium (Mg) alloy, it has high mechanical strength. Therefore, it is not necessary to arrange a plurality of reinforcing bars on the inner wall or increase the thickness thereof. Accordingly, the volume of the resonance space in the casing is increased, and it is possible to improve the timbre of the acoustic device while being excellent in the low frequency effect. In addition, a housing made of a magnesium (Mg) alloy can prevent interference due to standing waves of sound waves. Accordingly, it is possible to shorten the sound wave remaining time when the input of the electric signal is stopped. Since the magnesium (Mg) alloy has good heat dissipation performance, it can quickly dissipate the amount of heat generated when the speaker is operated, thus preventing the influence of too much heat on the timbre. In addition, a housing made of a magnesium (Mg) alloy can be expected to have a prevention effect of about 40% as compared with a housing made of a thermoplastic resin in terms of magnetic leakage.

本発明の実施形態に係わる音響機器の立体組立図である。It is a three-dimensional assembly drawing of the audio equipment concerning the embodiment of the present invention. 図１に示す音響機器の立体分解図である。It is a three-dimensional exploded view of the audio equipment shown in FIG. 図１に示す音響機器を他の方向から見た立体分解図である。It is the three-dimensional exploded view which looked at the audio equipment shown in FIG. 1 from the other direction.

以下、図面を参照しながら、本発明に係る実施例の構成を詳細に説明する。   Hereinafter, the configuration of an embodiment according to the present invention will be described in detail with reference to the drawings.

図１〜図３を参照すると、本発明の実施形態に係わる音響機器は、筐体１０と、筐体１０内に配置されたスピーカー３０と、を備える。   Referring to FIGS. 1 to 3, an audio device according to an embodiment of the present invention includes a housing 10 and a speaker 30 disposed in the housing 10.

前記筐体１０は、マグネシウム合金材料により製造され、且つ互いに積層される下部カバー１１及び上部カバー１３を含む。前記上部カバー１３及び前記下部カバー１１は、各々、半密封状であるが、互いに組み合わせると密封状態になり、すなわち円形頭部を有する細長体になる。   The housing 10 includes a lower cover 11 and an upper cover 13 that are made of a magnesium alloy material and are stacked on each other. The upper cover 13 and the lower cover 11 are each semi-sealed, but when combined with each other, they are in a sealed state, that is, an elongated body having a circular head.

前記下部カバー１１は、底部壁１１１と、該底部壁１１１の周縁から上方へ垂直に起立するように延在する側壁１１２と、を含む。前記底部壁１１１及び前記側壁１１２によってキャビティ１１３が形成され、前記キャビティ１１３は、前記スピーカー３０を収容する円形の収容空間１１５と、該収容空間１１５に連通する略矩形の共鳴空間１１４と、を備える。前記収容空間１１５の内部に、前記スピーカー３０を支えるための十字形の支持部１１６が設けられる。前記支持部１１６は、前記底部壁１１１に一体成型され、且つその頂面が傾斜面であるため、該傾斜面と前記底部壁１１１との夾角が鋭角となる。前記共鳴空間１１４の内部には、前記底部壁１１１に一体成型されたＬ字形の隔壁１１７が設けられる。前記隔壁１１７、前記底部壁１１１及び前記側壁１１２によって略Ｌ字形の風道１１８が形成される。前記底部壁１１１における前記風道１１８の一端に対応する位置に、外界と連通する風穴１１９が設けられる。前記側壁１１２の頂端に、外側が高く内側が低い階段面１２０が形成され、前記上部カバー１３と係合する為に用いられる。前記下部カバー１１における前記共鳴空間１１４側の側壁１１２が、前記共鳴空間１１４へ内凹するため、前記下部カバー１１に取付溝１２１が形成される。   The lower cover 11 includes a bottom wall 111 and a side wall 112 extending so as to stand vertically upward from a peripheral edge of the bottom wall 111. A cavity 113 is formed by the bottom wall 111 and the side wall 112, and the cavity 113 includes a circular accommodation space 115 that accommodates the speaker 30, and a substantially rectangular resonance space 114 that communicates with the accommodation space 115. . A cross-shaped support portion 116 for supporting the speaker 30 is provided in the housing space 115. Since the support part 116 is integrally formed with the bottom wall 111 and the top surface is an inclined surface, the included angle between the inclined surface and the bottom wall 111 is an acute angle. An L-shaped partition wall 117 integrally formed with the bottom wall 111 is provided in the resonance space 114. A substantially L-shaped air passage 118 is formed by the partition wall 117, the bottom wall 111 and the side wall 112. An air hole 119 communicating with the outside world is provided at a position corresponding to one end of the air passage 118 in the bottom wall 111. A stepped surface 120 having a high outside and a low inside is formed at the top end of the side wall 112 and used to engage with the upper cover 13. Since the side wall 112 on the resonance space 114 side in the lower cover 11 is recessed into the resonance space 114, a mounting groove 121 is formed in the lower cover 11.

図３を参照すると、前記下部カバー１１と同様に、上部カバー１３も、底部壁１３１と側壁１３２とを含み、前記底部壁１３１及び前記側壁１３２によってキャビティ１３３が形成される。前記キャビティ１３３は、共鳴空間１３４と、前記共鳴空間１３４に連通し、且つ前記スピーカー３０を収容する円形の収容空間１３５と、を含む。前記底部壁１３１における前記収容空間１３５に対応する位置に、円形の開口１３６が設けられ、前記開口１３６によって前記スピーカー３０の正面が露出される。前記上部カバー１３の長手側の側壁において、片側の側壁１３２が、相対している他側の側壁１３２より高いので、前記キャビティ１３３の横断面は略梯形になる。従って、前記二つのカバー１１、１３を組み合わせると、前記上部カバー１３の底部壁１３１と、前記下部カバー１１の底部壁１１１との夾角が鋭角になって、この夾角は、前記下部カバー１１の支持部１１６の頂面と前記下部カバー１１の底部壁１１１との夾角に等しい。前記側壁１３２の頂端に、内側が高く外側が低い階段面１４０が形成され、該階段面１４０は、前記記下部カバー１１の側壁１１１頂端の階段面１２０と互いに嵌合する。前記上部カバー１３の側壁１３２は、前記下部カバー１１の取付溝１２１に対応する取付溝１４１を有する。前記側壁１３２には、前記取付溝１４１側に向かって第１突片１４２が設けられている。前記上部カバー１３の収容空間１３５側の側壁１３２には、外側へ突出する一対の第２突片１４３が設けられる。これらの突片１４２、１４３によって、音響機器が携帯電話や電子計算機などの電子装置に取り付けられる。また、これらの突片１４２、１４３にゴム・ワッシャー１４４が配置されるので、電子装置と音響機器との間の振動を減少できる。   Referring to FIG. 3, like the lower cover 11, the upper cover 13 includes a bottom wall 131 and a side wall 132, and a cavity 133 is formed by the bottom wall 131 and the side wall 132. The cavity 133 includes a resonance space 134 and a circular accommodation space 135 that communicates with the resonance space 134 and accommodates the speaker 30. A circular opening 136 is provided at a position corresponding to the accommodation space 135 in the bottom wall 131, and the front surface of the speaker 30 is exposed through the opening 136. In the longitudinal side wall of the upper cover 13, the side wall 132 on one side is higher than the opposite side wall 132 on the other side, so that the cross section of the cavity 133 has a substantially trapezoidal shape. Therefore, when the two covers 11 and 13 are combined, the included angle between the bottom wall 131 of the upper cover 13 and the bottom wall 111 of the lower cover 11 becomes an acute angle. It is equal to the depression angle between the top surface of the portion 116 and the bottom wall 111 of the lower cover 11. A staircase surface 140 is formed at the top end of the side wall 132 and the inside is high and the outside is low, and the staircase surface 140 is fitted to the staircase surface 120 at the top end of the side wall 111 of the lower cover 11. The side wall 132 of the upper cover 13 has a mounting groove 141 corresponding to the mounting groove 121 of the lower cover 11. A first projecting piece 142 is provided on the side wall 132 toward the mounting groove 141 side. A pair of second projecting pieces 143 projecting outward are provided on the side wall 132 of the upper cover 13 on the accommodation space 135 side. With these protrusions 142 and 143, the acoustic device is attached to an electronic device such as a mobile phone or an electronic computer. Further, since the rubber washer 144 is disposed on the projecting pieces 142 and 143, vibration between the electronic device and the acoustic device can be reduced.

前記スピーカー３０は、電気信号を機械的振動に変換して、音波を発生させる。前記スピーカー３０の前後側（正反側）は、各々、超音波を輻射することができる。   The speaker 30 converts an electric signal into mechanical vibration to generate a sound wave. Each of the front and rear sides (forward and reverse sides) of the speaker 30 can radiate ultrasonic waves.

前記音響機器を組み合わせる時、前記下部カバー１１の側壁１１２頂端の階段面１２０を、前記上部カバー１３の側壁１３２頂端の階段面１４０に係合させ、且つ超音波溶接方式で前記下部カバー１１と前記上部カバー１３とを溶接する。この時、前記下部カバー１１の共鳴空間１１４と前記上部カバー１３の共鳴空間１３４とが組み合わされて、音響機器の共鳴空間を形成し、前記下部カバー１１の収容空間１１５と前記上部カバー１３の収容空間１３５とが組み合わされて、音響機器の収容空間を形成する。前記スピーカー３０は、前記音響機器の収容空間に配置され、且つ前記スピーカー３０の後発孔（図示せず）が設置された一端を、前記下部カバー１１の支持部１１６に当接させ、前記スピーカー３０の前発孔（図示せず）が設置された一端を、前記上部カバー１３の前記開口１３６外縁の底部壁１３１に当接させる。   When combining the acoustic equipment, the stepped surface 120 at the top end of the side wall 112 of the lower cover 11 is engaged with the stepped surface 140 at the top end of the side wall 132 of the upper cover 13, and the lower cover 11 and the step cover 140 are ultrasonically welded. The upper cover 13 is welded. At this time, the resonance space 114 of the lower cover 11 and the resonance space 134 of the upper cover 13 are combined to form a resonance space of an acoustic device, and the accommodation space 115 of the lower cover 11 and the accommodation of the upper cover 13 are accommodated. The space 135 is combined to form a housing space for the audio equipment. The speaker 30 is disposed in the accommodation space of the acoustic device, and one end where a rear hole (not shown) of the speaker 30 is installed is brought into contact with the support portion 116 of the lower cover 11, and the speaker 30. One end of the front cover (not shown) is brought into contact with the bottom wall 131 of the outer edge of the opening 136 of the upper cover 13.

前記音響機器が作動する時、前記スピーカー３０の前記前声孔（図示せず）からの音波は、前記開口１３６によって直接外界へ伝播され、前記スピーカー３０の前記後発孔（図示せず）からの音波は、音響機器の共鳴空間で共鳴することができ、且つ前記下部カバー１１の風道１１８および風穴１１９を通って外界へ伝播される。前記開口１３６及び前記風穴１１９によって外界へ伝播された音声は、互いに重ね合って音波の周波数範囲を広げる。   When the acoustic device is activated, sound waves from the front voice hole (not shown) of the speaker 30 are propagated directly to the outside through the opening 136 and from the rear hole (not shown) of the speaker 30. The sound wave can resonate in the resonance space of the acoustic device and propagates to the outside through the air passage 118 and the air hole 119 of the lower cover 11. The sound propagated to the outside by the opening 136 and the air hole 119 overlaps each other to widen the frequency range of the sound wave.

前記音響機器において、前記筐体１０がマグネシウム（Ｍｇ）合金から構成されるため、高い機械強度を有する。故に、その内壁に複数本の補強筋を配置する、又はその厚さを厚くする必要がない。従って、前記筐体１０内の共鳴空間の体積が増加し、低周波効果に優れる共に音響機器の音色も向上できる。また、マグネシウム（Ｍｇ）合金から構成された筐体１０は、音波の定在波による干渉の発生を防止することができる。従って、電気信号の入力が停止される時の、音波残存時間を短縮することができる。なお、マグネシウム（Ｍｇ）合金は放熱性能が良いので、スピーカー３０が作動する時に発生した熱量を素早く放熱することができ、故に高すぎる熱量が音色に与える影響を防止できる。   In the acoustic device, since the casing 10 is made of a magnesium (Mg) alloy, it has high mechanical strength. Therefore, it is not necessary to arrange a plurality of reinforcing bars on the inner wall or increase the thickness thereof. Therefore, the volume of the resonance space in the housing 10 is increased, and the timbre of the acoustic device can be improved while being excellent in the low frequency effect. Moreover, the housing 10 made of a magnesium (Mg) alloy can prevent the occurrence of interference due to standing waves of sound waves. Accordingly, it is possible to shorten the sound wave remaining time when the input of the electric signal is stopped. Note that since the magnesium (Mg) alloy has good heat dissipation performance, it is possible to quickly dissipate the amount of heat generated when the speaker 30 is operated, and therefore it is possible to prevent the influence of too much heat on the timbre.

表１は、ガウス・メーター（Ｇａｕｓｓ Ｍｅｔｅｒ）によって、本発明の音響機器と、熱可塑性樹脂で射出成形された筐体を有する従来の音響機器とから、１ｃｍ離れている位置で測定したデータであって、以下のデータから分かるように、本発明の音響機器の筐体の磁性漏れは従来の音響機器の筐体に対して、約４０％の防止効果を期待することができる。 Table 1 shows data measured by a Gauss Meter at a position 1 cm away from the acoustic device of the present invention and a conventional acoustic device having a casing injection-molded with a thermoplastic resin. As can be seen from the following data, the magnetic leakage of the housing of the acoustic device of the present invention can be expected to be about 40% of the prevention effect of the housing of the conventional acoustic device.

Figure 2009284490
Figure 2009284490

１０ 筐体
１１ 下部カバー
１１１、１３１ 底壁部
１１２、１３２ 側壁
１１３、１３３ キャビティ
１１４、１３４ 共鳴空間
１１５、１３５ 収容空間
１１６ 支持部
１１７ 隔壁
１１８ 風道
１１９ 風穴
１２０、１４０ 階段面
１２１、１４１ 取付溝
１３ 上部カバー
１３６ 開口
１４２ 第１突片
１４３ 第２突片
１４４ ゴム・ワッシャー
３０ スピーカー DESCRIPTION OF SYMBOLS 10 Housing | casing 11 Lower cover 111, 131 Bottom wall part 112, 132 Side wall 113, 133 Cavity 114, 134 Resonance space 115, 135 Housing space 116 Support part 117 Partition 118 Air path 119 Air hole 120, 140 Staircase surface 121, 141 Mounting groove 13 Upper cover 136 Opening 142 First protrusion 143 Second protrusion 144 Rubber washer 30 Speaker

Claims (7)

マグネシウム合金材料からなる筐体と、
前記筐体内に配置されるスピーカーと、
を備える音響機器であって、
前記筐体内に、互いに連通する共鳴空間と収容空間とが形成され、
前記スピーカーが、前記収容空間に配置されることを特徴とする音響機器。 A housing made of a magnesium alloy material;
A speaker disposed in the housing;
An audio device comprising:
In the housing, a resonance space and an accommodation space communicating with each other are formed,
The acoustic apparatus, wherein the speaker is disposed in the accommodation space. 前記筐体は、上部カバーと下部カバーとから構成され、前記上部カバー及び前記下部カバーは、各々、底部壁と前記底部壁の周縁から上方へ垂直に起立するように延在する側壁とを含み、前記上部カバー及び前記下部カバーの底部壁及び側壁によって、前記筐体内に共鳴空間と収容空間とが形成されることを特徴とする請求項１に記載の音響機器。   The housing includes an upper cover and a lower cover, and each of the upper cover and the lower cover includes a bottom wall and a side wall extending vertically upward from a peripheral edge of the bottom wall. The acoustic device according to claim 1, wherein a resonance space and an accommodation space are formed in the housing by a bottom wall and a side wall of the upper cover and the lower cover. 前記下部カバーと前記上部カバーとの側壁の頂端に、各々、階段面が設けられ、前記下部カバーの階段面と前記上部カバーの階段面とが互いに係合することを特徴とする請求項２記載の音響機器。   3. The step surface is provided at each of the top ends of the side walls of the lower cover and the upper cover, and the step surface of the lower cover and the step surface of the upper cover are engaged with each other. Sound equipment. 前記上部カバーと前記下部カバーの少なくとも一方の側壁に、少なくとも一つの突片が設けられ、前記突片にゴム・ワッシャーが配置されることを特徴とする請求項２記載の音響機器。   The acoustic device according to claim 2, wherein at least one projecting piece is provided on at least one side wall of the upper cover and the lower cover, and a rubber washer is disposed on the projecting piece. 前記収容空間内に前記スピーカーを支えるための支持部が設けられ、前記支持部は前記下部カバーの底部壁に一体成型され、前記支持部の頂面と前記下部カバーの底部壁との夾角が鋭角であることを特徴とする請求項２記載の音響機器。   A support portion for supporting the speaker is provided in the housing space, and the support portion is integrally formed with a bottom wall of the lower cover, and a depression angle between the top surface of the support portion and the bottom wall of the lower cover is an acute angle. The acoustic device according to claim 2, wherein: 前記上部カバー長手側の側壁において、片側の側壁が、相対している他側の側壁より高いので、前記上部カバーの底部壁と前記下部カバーの底部壁との夾角が鋭角であって、この夾角は、前記下部カバーの支持部の頂面と前記下部カバー１１の底部壁との夾角に等しいことを特徴とする請求項５記載の音響機器。   In the upper cover longitudinal side wall, since one side wall is higher than the opposite side wall, the depression angle between the bottom wall of the upper cover and the bottom wall of the lower cover is an acute angle. The acoustic device according to claim 5, wherein is equal to a depression angle between a top surface of the support portion of the lower cover and a bottom wall of the lower cover 11. 前記下部カバーの共鳴空間に隔壁が設けられ、前記隔壁は前記下部カバーの底部壁に一体成型され、且つ前記隔壁、前記下部カバーの底部壁及び前記下部カバーの側壁によって風道が形成され、前記底部壁における前記風道の一端に対応する位置に、外界と連通する風穴が設けられることを特徴とする請求項２記載の音響機器。   A partition wall is provided in a resonance space of the lower cover, the partition wall is integrally formed with a bottom wall of the lower cover, and an air passage is formed by the partition wall, the bottom wall of the lower cover, and a side wall of the lower cover, The acoustic device according to claim 2, wherein an air hole communicating with the outside is provided at a position corresponding to one end of the air passage on the bottom wall.
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