WO2011096187A1 - スピーカ - Google Patents
スピーカ Download PDFInfo
- Publication number
- WO2011096187A1 WO2011096187A1 PCT/JP2011/000506 JP2011000506W WO2011096187A1 WO 2011096187 A1 WO2011096187 A1 WO 2011096187A1 JP 2011000506 W JP2011000506 W JP 2011000506W WO 2011096187 A1 WO2011096187 A1 WO 2011096187A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- damper
- voice coil
- speaker
- frame
- elastic body
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/041—Centering
- H04R9/043—Inner suspension or damper, e.g. spider
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
Definitions
- the present invention relates to a speaker used in various audio equipment.
- FIG. 4 is a half sectional view of a conventional speaker.
- This speaker has a magnetic circuit 21, a frame 25, a voice coil 26, a damper 27, a diaphragm 28, and a dust cap 29.
- the magnetic circuit 21 includes a plate 22, a magnet 23, and a yoke 24.
- Patent Document 1 In order to improve such abnormal noise, a speaker has been devised that positively suppresses the displacement of the damper when the amplitude increases and controls the amplitude (for example, Patent Document 1).
- a speaker has been devised in which the width and height of the damper corrugation is reduced from the inner periphery toward the outer periphery to reduce the flexibility of the outer periphery and suppress the large amplitude.
- the effect of amplitude control is small.
- the present invention is a speaker capable of effectively controlling the amplitude at a large amplitude while reproducing a rich bass, and reproducing it with high sound quality.
- the speaker of the present invention includes a frame, a magnetic circuit fixed to the frame, a voice coil, a damper, and a diaphragm.
- the diaphragm is fixed to the frame and the voice coil.
- the voice coil is inserted in the magnetic gap of the magnetic circuit.
- the damper is fixed to the voice coil and the frame, and the damper is formed with a plurality of corrugations.
- the corrugations on the inner peripheral side of the damper are provided with a plurality of apertures, and these apertures are covered with an elastic body.
- the speaker according to the present invention has a high degree of corrugation flexibility in the inner periphery of the damper having an opening, and this portion is first displaced at a small amplitude, enabling high-quality sound reproduction faithful to the input signal.
- a portion other than the damper inner peripheral portion which is set to have a low flexibility and no opening in the damper, is mainly displaced.
- the speaker easily amplifies and reproduces a rich bass sound at a small amplitude where sufficient magnetic flux is applied to the voice coil, and the damper suppresses the amplitude of the voice coil at a large amplitude, thereby reducing distortion and abnormal noise.
- FIG. 1 is a half sectional view of a speaker according to an embodiment of the present invention.
- 2 is an enlarged plan view of a main part of the damper of the speaker shown in FIG.
- FIG. 3 is a “force-displacement” curve diagram of a damper between a speaker according to an embodiment of the present invention and a conventional speaker.
- FIG. 4 is a half sectional view of a conventional speaker.
- FIG. 1 is a half sectional view of a speaker according to an embodiment of the present invention.
- FIG. 2 is an enlarged plan view of a main part of the damper of the speaker.
- This speaker has a frame 5, a magnetic circuit 1, a voice coil 6, a damper 7, a diaphragm 8, and a dust cap 9.
- the magnetic circuit 1 includes a magnet 3, a plate 2 fixed to the upper surface of the magnet 3, and a yoke 4 fixed to the lower surface of the magnet 3 and the frame 5. A magnetic gap is formed between the plate 2 and the yoke 4.
- the magnetic circuit 1 is fixed to an opening provided in the approximate center of the frame 5.
- the voice coil 6 is inserted in the magnetic gap of the magnetic circuit 1.
- the damper 7 is fixed to the voice coil 6 and the frame 5, and the diaphragm 8 is fixed to the frame 5 and the voice coil 6.
- the damper 7 is formed with a plurality of corrugations 7A and 7B concentrically.
- the corrugation 7B provided on the inner peripheral side of the damper 7 is provided with a plurality of apertures 10, and the elastic body 11 covers the apertures 10 and closes the apertures 10.
- the dust cap 9 covers the upper opening of the voice coil 6.
- the inner peripheral portion provided with the opening 10 is locally softer than other portions. Therefore, when the amplitude starts, this portion is displaced first. Further, due to the spring action of the elastic body 11 covering the opening 10, the restoring force of the damper 7 reduced by the opening 10 is compensated without reducing the flexibility.
- the corrugation 7 ⁇ / b> B provided with the opening 10 is provided on the inner peripheral side with respect to the middle from the outer periphery to the inner periphery of the damper 7.
- the speaker can easily amplify and reproduce rich bass, and can reproduce with high sound quality faithful to the input signal.
- the amplitude increases and the inner periphery reaches a certain displacement, the displacement of the portion without the opening 10 increases. That is, at a large amplitude, the low flexibility portion suppresses the amplitude of the speaker, and distortion and abnormal sound generated when the voice coil 6 is detached from the magnetic circuit 1 are improved.
- the damper 7 provided with the opening portion 10 also increases the flexibility as a whole as compared with the damper 7 not provided. Therefore, in order to keep the Fo value of the speaker constant, it is necessary to apply a hard material to the damper 7. For example, a thicker count fiber or a molding resin having a higher concentration can be used.
- FIG. 3 shows a “force-displacement” curve diagram of the damper.
- the horizontal axis shows the force
- the vertical axis shows the displacement
- the curve A is a force-displacement curve of a conventional damper without the opening 10
- the curve B is provided with the opening 10 and the elastic body 11 on the inner periphery of the same damper.
- It is a force-displacement curve in the case of As apparent from FIG. 3, the slope of the curve B is larger than the slope of the curve A at a small displacement of 1 to 2 mm. That is, it can be seen that the damper indicated by curve B is displaced with a smaller force. Therefore, it can be seen that this damper has higher flexibility.
- the base material of the damper indicated by the curve B is appropriately harder than the base material of the damper indicated by the curve A, it is easier to displace at a small amplitude with an equivalent Fo value, and more amplitude control is required at a large amplitude. A speaker can be realized.
- the elastic body 11 can be formed by molding or coating rubber or polymer resin. However, if the elastic body 11 is applied too much to the damper, the sound pressure is reduced due to the weight of the elastic body 11, or the sound quality is reduced due to viscous resistance. Therefore, it is not preferable to apply the coating amount to the minimum necessary and continuously cover the entire circumference of the corrugation.
- the damper 7 and the voice coil 6 are fixed with an adhesive. It is preferable to provide the aperture 10 and the elastic body 11 in the innermost corrugation within a range not interfering with the adhesive. That is, it is preferable to form the elastic body 11 in the corrugation on the inner peripheral side as much as possible so as not to contact the adhesive.
- the change in flexibility of the damper 7 occurs earliest after the speaker starts to swing. For this reason, the speaker easily swings at a small amplitude, can reproduce a richer bass, and can reproduce a higher sound quality that is more faithful to the input signal.
- This configuration is suitable for a full range type speaker or the like in which the voice coil 6 is easily detached from the magnetic circuit 1 because the magnetic pole width and the winding width of the voice coil 6 are close.
- the elastic body 11 is preferably formed of a silicon-based resin. Thereby, reliability, such as heat resistance, can be improved.
- the inner peripheral corrugation of the damper 7 is close to the voice coil 6 that is a heating element. For this reason, by providing an elastic body 11 made of a silicon-based resin having stable heat resistance and temperature flexibility characteristics in a portion close to the voice coil 6, reliability is improved and the Fo value and sound pressure frequency characteristics are thermally improved. An improvement in stability can be realized.
- the corrugation 7B provided with the opening 10 and the elastic body 11 is concave as viewed from above, but may be convex or concave.
- the opening 10 is provided in only one corrugation 7 ⁇ / b> B, but the opening 10 and the elastic body 11 may be provided in a plurality of corrugations.
- the speaker according to the present invention can be applied to a case where it is necessary to improve distortion and abnormal sound at a large amplitude while maintaining a rich bass, and thus this speaker is suitably used for various acoustic devices.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
2 プレート
3 マグネット
4 ヨーク
5 フレーム
6 ボイスコイル
7 ダンパー
8 振動板
9 ダストキャップ
10 開孔部
11 弾性体
Claims (3)
- フレームと、
前記フレームに固定された磁気回路と、
前記磁気回路の磁気ギャップに挿入されたボイスコイルと、
前記ボイスコイルと前記フレームとに固定され、複数のコルゲーションが形成されたダンパーと、
前記フレームと前記ボイスコイルとに固定された振動板と、を備え、
前記複数のコルゲーションのうち、前記ダンパーの内周側のコルゲーションに複数の開孔部が設けられ、前記開孔部が弾性体で覆われている、
スピーカ。 - 前記ダンパーと前記ボイスコイルは接着剤で固定され、
前記複数のコルゲーションのうち、前記接着剤に干渉しない範囲において最内周のコルゲーションに、前記開孔部と前記弾性体が設けられている、
請求項1記載のスピーカ。 - 前記弾性体は、シリコン系樹脂で形成されている、
請求項1記載のスピーカ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011800085682A CN102754455A (zh) | 2010-02-08 | 2011-01-31 | 扬声器 |
US13/577,615 US20120321122A1 (en) | 2010-02-08 | 2011-01-31 | Speaker |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010025082A JP2011166335A (ja) | 2010-02-08 | 2010-02-08 | スピーカ |
JP2010-025082 | 2010-02-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011096187A1 true WO2011096187A1 (ja) | 2011-08-11 |
Family
ID=44355205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/000506 WO2011096187A1 (ja) | 2010-02-08 | 2011-01-31 | スピーカ |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120321122A1 (ja) |
JP (1) | JP2011166335A (ja) |
CN (1) | CN102754455A (ja) |
WO (1) | WO2011096187A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113630696A (zh) * | 2020-05-09 | 2021-11-09 | 昆山康龙电子科技有限公司 | 能防止音圈碰撞的微型扬声器 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2519573A (en) * | 2013-10-25 | 2015-04-29 | B & W Group Ltd | Improvements in and relating to loudspeakers |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5933393U (ja) * | 1982-08-20 | 1984-03-01 | 松下電器産業株式会社 | スピ−カ |
JPS61114699A (ja) * | 1984-11-09 | 1986-06-02 | Matsushita Electric Ind Co Ltd | スピ−カ |
JPH0851694A (ja) * | 1994-06-01 | 1996-02-20 | Nokia Technol Gmbh | センタリング板 |
JPH11155195A (ja) * | 1997-11-20 | 1999-06-08 | Sony Corp | スピーカー装置 |
JP2006094087A (ja) * | 2004-09-24 | 2006-04-06 | Onkyo Corp | スピーカー用ダンパー及びこれを用いたスピーカー |
JP2008005002A (ja) * | 2006-06-20 | 2008-01-10 | Onkyo Corp | スピーカー用ダンパーおよびこれを用いたスピーカー |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3207686B2 (ja) * | 1994-10-07 | 2001-09-10 | フオスター電機株式会社 | スピーカ用ダンパー |
CN2348533Y (zh) * | 1998-08-11 | 1999-11-10 | 罗道全 | 用于扬声器的自适应弹簧定心支架片 |
US7734056B2 (en) * | 2006-01-05 | 2010-06-08 | Hiroshi Ohara | Damper structure of preventing irregular vibration for speaker |
JP4735299B2 (ja) * | 2006-02-06 | 2011-07-27 | パナソニック株式会社 | スピーカ |
-
2010
- 2010-02-08 JP JP2010025082A patent/JP2011166335A/ja active Pending
-
2011
- 2011-01-31 US US13/577,615 patent/US20120321122A1/en not_active Abandoned
- 2011-01-31 CN CN2011800085682A patent/CN102754455A/zh active Pending
- 2011-01-31 WO PCT/JP2011/000506 patent/WO2011096187A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5933393U (ja) * | 1982-08-20 | 1984-03-01 | 松下電器産業株式会社 | スピ−カ |
JPS61114699A (ja) * | 1984-11-09 | 1986-06-02 | Matsushita Electric Ind Co Ltd | スピ−カ |
JPH0851694A (ja) * | 1994-06-01 | 1996-02-20 | Nokia Technol Gmbh | センタリング板 |
JPH11155195A (ja) * | 1997-11-20 | 1999-06-08 | Sony Corp | スピーカー装置 |
JP2006094087A (ja) * | 2004-09-24 | 2006-04-06 | Onkyo Corp | スピーカー用ダンパー及びこれを用いたスピーカー |
JP2008005002A (ja) * | 2006-06-20 | 2008-01-10 | Onkyo Corp | スピーカー用ダンパーおよびこれを用いたスピーカー |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113630696A (zh) * | 2020-05-09 | 2021-11-09 | 昆山康龙电子科技有限公司 | 能防止音圈碰撞的微型扬声器 |
CN113630696B (zh) * | 2020-05-09 | 2023-12-29 | 昆山康龙电子科技有限公司 | 能防止音圈碰撞的微型扬声器 |
Also Published As
Publication number | Publication date |
---|---|
JP2011166335A (ja) | 2011-08-25 |
US20120321122A1 (en) | 2012-12-20 |
CN102754455A (zh) | 2012-10-24 |
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