WO2007114434A1 - スピーカ用ダンパーおよびこれを用いたスピーカ - Google Patents
スピーカ用ダンパーおよびこれを用いたスピーカ Download PDFInfo
- Publication number
- WO2007114434A1 WO2007114434A1 PCT/JP2007/057447 JP2007057447W WO2007114434A1 WO 2007114434 A1 WO2007114434 A1 WO 2007114434A1 JP 2007057447 W JP2007057447 W JP 2007057447W WO 2007114434 A1 WO2007114434 A1 WO 2007114434A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- damper
- speaker
- roll
- outer peripheral
- elastic body
- Prior art date
Links
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
Definitions
- the present invention relates to a speaker damper and a speaker using the same.
- FIGS. 4, 5A and 5B, and FIGS. 6A and 6B A technology related to a conventional speaker damper and a speaker using the same will be described with reference to FIGS. 4, 5A and 5B, and FIGS. 6A and 6B.
- FIG. 4 is a cross-sectional view of a conventional speaker.
- a magnetic circuit is composed of plates 43 and 44 and magnet 42.
- a force corresponding to the current flowing through the voice coil 41 and the magnetic flux density linked to the voice coil 41 acts on the voice coil 41.
- the diaphragm 45 is coupled to the voice coil 41, the diaphragm 45 moves integrally with the voice coil 41.
- the diaphragm 45 and the voice coil 41 are supported by an edge 47 and a damper 46, respectively.
- the edge 47 and the damper 46 change shape in the vertical direction and move, so that the diaphragm 45 moves up and down and the sound pressure is increased. Is generated.
- the edge 47 has a large roll shape and can have a large amplitude, and the stiffness of the edge 47 itself is designed to be small.
- the damper 46 that supports the voice coil 41 requires a high center holding force because it does not come into contact with the magnetic circuit when the voice coil 41 oscillates, so a shape having a plurality of small rolls is used. Normally, the damper 46 is set higher than the edge 47!
- the stiffness of the entire speaker is dominated by the damper 46.
- a major factor affecting distortion, an important performance of speakers, is nonlinearity due to stiffness displacement. It is important from the viewpoint of distortion performance that the stiffness is constant regardless of the displacement of the diaphragm 45.Since the damper 46 is dominant to the overall stiffness of the speaker, the linearity above and below it Significantly affects distortion.
- FIG. 5A is a plan view of a conventional damper 46 of the speaker
- FIG. 5B is a sectional view of the damper 46 taken along line CC.
- the damper 46 has a A material obtained by impregnating a wavy woven fabric or non-woven fabric with a number of roll portions impregnated with a thermosetting resin.
- FIG. 6A is a plan view of another conventional damper 46A, and FIG. 6B is a line D of the damper 46A.
- FIG. 1 A first figure.
- the damper 46A is provided with a frame surface sticking edge portion to form a plurality of roll portions. Since there is an edge, the size of the contact of the damper 46A to the frame can be increased. Moreover, since the distance of the damper from the part where the damper is affixed to the frame to the part where the voice coil is adhered can be increased, the amplitude of the damper up and down can be increased.
- Patent Document 1 As related prior art document information, for example, Patent Document 1 and Non-Patent Document 1 are known.
- Patent Document 1 Japanese Patent Application Laid-Open No. 62-193399
- Non-Patent Literature 1 Tamon Saeki, "Speaker & Enclosure Encyclopedia”, published by Seikodo Shinkosha, May 28, 1999, p. 62
- the speaker damper and the speaker using the same according to the present invention have an elastic body on one or both sides of the outer peripheral portion of the movable portion of the damper formed of at least two or more roll portions, or in the material.
- the inner periphery other than the outer periphery does not have an elastic body.
- the resonance of the roll part can be reduced.
- the central portion coupled to the voice coil is formed by a roll portion that does not include an elastic body, high sound pressure can be obtained without increasing the vibration system mass, and high linearity can be obtained. Can be reduced.
- FIG. 1A is a plan view of a speaker damper according to an embodiment of the present invention.
- FIG. 1B is a cross-sectional view taken along line AA in FIG. 1A.
- FIG. 2 is a cross-sectional view of a speaker using the speaker damper of the present embodiment.
- FIG. 3A is a plan view of a speaker damper having a slit, which is a modification of the present embodiment.
- FIG. 3B is a cross-sectional view taken along line BB in FIG. 3A.
- FIG. 4 is a cross-sectional view of a conventional speaker.
- FIG. 5A is a plan view of a conventional damper.
- FIG. 5B is a sectional view taken along line CC in FIG. 5A.
- FIG. 6A is a plan view of another conventional damper.
- FIG. 6B is a cross-sectional view taken along line DD in FIG. 6A.
- FIG. 1A is a plan view of the speaker damper 10 according to the embodiment of the present invention.
- B is a cross-sectional view of the damper 10 taken along line AA.
- FIG. 2 is a cross-sectional view of a speaker using the damper 10.
- FIG. 3A is a plan view of a speaker damper 10A having a slit, which is a modification of the embodiment, and FIG. 3B is a cross-sectional view of the damper 10A taken along line BB.
- FIGS. 1A and IB one or both sides of the outer peripheral part 11 of the movable part 17 of the damper 10 formed by two or more roll parts 13 and 14 or an elastic body (not shown)
- the inner peripheral part other than the outer peripheral part 11 has no elastic body.
- the edge portion 12 is provided on the outer peripheral portion 11 of the damper 10, and the radius of the roll portion 13 of the outer peripheral portion 11 is 1.5 times larger than the radius of the roll portion 14 other than the outer peripheral portion 11.
- rubber (not shown), which is an elastic body, is connected to, for example, both sides of the large roll portion 13 of the outer peripheral portion 11.
- this elastic rubber As a method of bonding this elastic rubber to a damper made of woven fabric or non-woven fabric, there is an insert molding in which a damper is sandwiched between rubber and molding. Further, this rubber may be foamed rubber. In this case, light weight can be achieved. This rubber is coupled to the outside of the middle between the maximum outer diameter and inner diameter of the movable portion 17 of the damper 10.
- the outer peripheral portion 11 of the damper 10 is generally fixed to the frame with an adhesive.
- the movable portion 17 can move from the edge portion 12 of the damper 10 to the portion bonded to the voice coil by the vibration of the force voice coil.
- the damper 10 Since an ordinary electrodynamic speaker requires a large amplitude in a low sound range, the damper 10 is required to have a large amplitude and high linearity. Although the required amplitude is small in the mid-high range, it is required to reduce the mass of the vibrating part in order to produce a high sound pressure. In the damper 10 of FIG. 1A and IB, since the radius of the roll portion 13 of the outer peripheral portion 11 is large at the time of large amplitude in the low sound range, a large amplitude can be obtained by deforming the roll portion 13.
- the force that can cause stress fatigue on the roll portion 13 of the outer peripheral portion 11 due to the large amplitude The rubber, which is an elastic body, is disposed on both sides of the roll portion 13, for example, so that excessive amplitude and resonance can be reduced. it can.
- a single resonance of the damper which is likely to occur in the roll part 13 with a large radius, also affects the disturbance of the characteristics in the mid-range, but the disturbance of the characteristics can also be reduced by reducing the internal loss resonance of the rubber rubber.
- the roll part 13 of the outer peripheral part 11 having a large radius enables a large amplitude, but the roll parts 14 other than the outer peripheral part 11 have a vertical asymmetry when the roll part 13 is greatly deformed and swings. Chasui. Therefore, the rolls other than the outer peripheral part 11 are arranged so that the center of each roll becomes a substantially conical locus by urging from the outer peripheral part to the inner peripheral part as the angle 15 of the roll part 14 other than the outer peripheral part 11.
- the vertical symmetry of the part 14 itself can be changed. Therefore, when the roll part 13 of the outer peripheral part 11 is a down roll as shown in FIG. 1B, the vertical symmetry of the entire damper 10 can be improved by making the roll part 14 other than the outer peripheral part 11 into an inverted conical shape.
- the damper 10 operates in the mid-high range, and the roll part 13 of the outer peripheral part 11 having a small required amplitude and a large radius hardly moves, and only the roll part 14 other than the outer peripheral part 11 made of a small radius is used. Move. For this reason, the mass of the damper 10 is substantially the vibration system mass only in the roll part 14 other than the outer peripheral part 11 not equipped with an elastic body such as rubber. Pressure can be obtained.
- FIG. 3A is a plan view of a speaker damper having a slit, which is a modification of the present embodiment
- FIG. 3B is a cross-sectional view of the damper taken along line BB.
- the speaker damper 10A shown in FIGS. 3A and 3B has slits 34 partially provided on the roll portion 33 having a large radius of the outer peripheral portion 11A of the damper 10A.
- the roll part 33 having a large radius may become harder or the stiffness may be asymmetric in the vertical direction of the amplitude.
- the slit 34 is partially provided in the roll part 33 with a large radius, so that the stiffness of the roll part 33 itself with a large radius can be adjusted, and the asymmetry of the stiffness with respect to the amplitude in the up and down direction of the damper 10A.
- the slit 34 can be easily adjusted, and distortion as a speaker can be reduced.
- the slit 34 it is expected that the dust gap protection function of the magnetic gap as the damper 10A is lowered, but in this embodiment, a cutout is provided only in a portion made of woven fabric or non-woven fabric, and thereafter If the slit 34 is also formed at the same time as the elastic body is formed of rubber, the slit 34 can be closed with rubber, and the magnetic gear can be protected against dust.
- the thickness of the elastic body coupled to the outer peripheral portion 11A of the damper 10A is larger than the thickness of the roll portion 33, so that the strength of the rim portion 35 is increased. As a result, the shape of the edge portion 35 can be maintained even at a large amplitude, and the sound quality and reliability are excellent.
- the speaker damper and the speaker using the same according to the present invention have a high linearity by reducing resonance of the damper formed by at least two or more roll portions and having good linearity characteristics.
- the present invention can be applied to dampers and speakers that need to achieve sound quality.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/162,021 US8428298B2 (en) | 2006-04-04 | 2007-04-03 | Damper for speaker and speaker using the damper |
CN2007800060439A CN101385388B (zh) | 2006-04-04 | 2007-04-03 | 扬声器用阻尼器和使用该阻尼器的扬声器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006102696A JP4735376B2 (ja) | 2006-04-04 | 2006-04-04 | スピーカ用ダンパーおよびこれを用いたスピーカ |
JP2006-102696 | 2006-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007114434A1 true WO2007114434A1 (ja) | 2007-10-11 |
Family
ID=38563698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/057447 WO2007114434A1 (ja) | 2006-04-04 | 2007-04-03 | スピーカ用ダンパーおよびこれを用いたスピーカ |
Country Status (4)
Country | Link |
---|---|
US (1) | US8428298B2 (ja) |
JP (1) | JP4735376B2 (ja) |
CN (1) | CN101385388B (ja) |
WO (1) | WO2007114434A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8315420B2 (en) * | 2007-02-28 | 2012-11-20 | Bose Corporation | Spider |
CN104320742A (zh) * | 2014-11-10 | 2015-01-28 | 国光电器股份有限公司 | 扬声器定心支片 |
JP6327135B2 (ja) * | 2014-12-05 | 2018-05-23 | 株式会社Jvcケンウッド | スピーカ用ダンパ及びスピーカ |
FR3058022B1 (fr) * | 2016-10-25 | 2019-03-15 | Cabasse | Haut-parleur comportant une membrane particuliere et procede d'assemblage d'un haut-parleur |
US11112819B2 (en) * | 2018-08-28 | 2021-09-07 | Microchip Technology Incorporated | Method of clock gate analysis for improved efficiency of electronic circuitry system designs and related systems, methods and devices |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5018231U (ja) * | 1973-06-14 | 1975-02-28 | ||
JPH02133097U (ja) * | 1989-04-07 | 1990-11-05 | ||
JP2005109851A (ja) * | 2003-09-30 | 2005-04-21 | Minebea Co Ltd | スピーカ |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS427848Y1 (ja) * | 1964-12-24 | 1967-04-19 | ||
JPS5018231A (ja) | 1973-06-23 | 1975-02-26 | ||
JPS5649188A (en) | 1979-09-27 | 1981-05-02 | Yamato Sewing Machine Mfg | Adjustment for location of stacking stitchinggup cloth and its device |
JPS62193399A (ja) | 1986-02-19 | 1987-08-25 | Pioneer Electronic Corp | スピ−カ用振動体の支持体 |
JPH02133097A (ja) * | 1988-11-14 | 1990-05-22 | Toshiba Corp | 同期電動機の制御装置 |
JPH03247099A (ja) * | 1990-02-23 | 1991-11-05 | Sharp Corp | スピーカ |
WO1997046046A1 (en) * | 1996-05-31 | 1997-12-04 | Philips Electronics N.V. | Electrodynamic loudspeaker and system comprising the loudspeaker |
US6031925A (en) * | 1998-06-25 | 2000-02-29 | U.S. Philips Corporation | Telescoping loudspeaker has multiple voice coils |
JP3247099B2 (ja) | 2000-01-20 | 2002-01-15 | 松下電器産業株式会社 | 電極構造体の形成方法及び半導体装置の製造方法 |
US6655495B2 (en) * | 2001-10-16 | 2003-12-02 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker damper and loudspeaker |
JP3651472B2 (ja) * | 2003-10-14 | 2005-05-25 | 松下電器産業株式会社 | スピーカ |
JP2005328336A (ja) * | 2004-05-14 | 2005-11-24 | Pioneer Electronic Corp | スピーカー装置用ダンパー、そのダンパーを用いたスピーカー装置及びその製造方法 |
JP4735405B2 (ja) * | 2005-09-21 | 2011-07-27 | パナソニック株式会社 | スピーカ用ダンパーとそれを用いたスピーカ |
JP4626462B2 (ja) * | 2005-09-21 | 2011-02-09 | パナソニック株式会社 | スピーカ |
JP4618116B2 (ja) * | 2005-12-07 | 2011-01-26 | パナソニック株式会社 | スピーカ |
JP4569477B2 (ja) * | 2006-01-17 | 2010-10-27 | パナソニック株式会社 | スピーカ |
JP4735299B2 (ja) * | 2006-02-06 | 2011-07-27 | パナソニック株式会社 | スピーカ |
JP4735306B2 (ja) * | 2006-02-09 | 2011-07-27 | パナソニック株式会社 | スピーカ |
EP1881734B1 (en) * | 2006-05-10 | 2012-04-11 | Panasonic Corporation | Speaker |
JP5018231B2 (ja) | 2007-05-21 | 2012-09-05 | 株式会社ナカヨ通信機 | 電話システムおよび電話端末 |
US8295538B2 (en) * | 2008-08-22 | 2012-10-23 | Harman Becker Automotive Systems Gmbh | Loudspeaker spider |
-
2006
- 2006-04-04 JP JP2006102696A patent/JP4735376B2/ja active Active
-
2007
- 2007-04-03 WO PCT/JP2007/057447 patent/WO2007114434A1/ja active Application Filing
- 2007-04-03 CN CN2007800060439A patent/CN101385388B/zh not_active Expired - Fee Related
- 2007-04-03 US US12/162,021 patent/US8428298B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5018231U (ja) * | 1973-06-14 | 1975-02-28 | ||
JPH02133097U (ja) * | 1989-04-07 | 1990-11-05 | ||
JP2005109851A (ja) * | 2003-09-30 | 2005-04-21 | Minebea Co Ltd | スピーカ |
Also Published As
Publication number | Publication date |
---|---|
CN101385388A (zh) | 2009-03-11 |
JP2007281637A (ja) | 2007-10-25 |
CN101385388B (zh) | 2012-12-26 |
JP4735376B2 (ja) | 2011-07-27 |
US8428298B2 (en) | 2013-04-23 |
US20090028377A1 (en) | 2009-01-29 |
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