WO2006022119A1 - スピーカ - Google Patents
スピーカ Download PDFInfo
- Publication number
- WO2006022119A1 WO2006022119A1 PCT/JP2005/014069 JP2005014069W WO2006022119A1 WO 2006022119 A1 WO2006022119 A1 WO 2006022119A1 JP 2005014069 W JP2005014069 W JP 2005014069W WO 2006022119 A1 WO2006022119 A1 WO 2006022119A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- edge
- magnetic circuit
- speaker
- diaphragm
- 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
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/24—Tensioning by means acting directly on free portions of diaphragm or cone
-
- 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
-
- 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
- H04R9/06—Loudspeakers
Definitions
- the present invention relates to a speaker used in various audio devices.
- this speaker includes a magnetic circuit 1, a voice coil 4 in which at least the coil portion 3 is movably provided in the magnetic gap 2 of the magnetic circuit 1, and a magnetic coil 2 outside the magnetic gap 2 of the voice coil 4.
- a diaphragm 5 having an inner periphery connected to each other and a frame 7 having the outer periphery of the diaphragm 5 connected to each other through an edge 6 are provided. Then, when an electric signal output from an audio amplifier or the like is input to the coil portion 3 of the voice coil 4, the voice coil 4 is vibrated, and the vibration force is transmitted to the diaphragm 5. It is configured to vibrate air and convert an electrical signal into sound.
- An example of a speaker having such a configuration is disclosed in Japanese Patent Application Laid-Open No. 11-275690.
- the inner periphery of the damper 8 is fixed between the coil portion 3 of the voice coil 4 and the inner periphery fixing portion of the diaphragm 5, and the outer periphery of the damper 8 is a frame Fixed to 7.
- the damper 8 forms a suspension together with the edge 6 so that the voice coil 4 does not roll when moving.
- the damper 8 is formed by combining a plurality of waveforms, and has a structure that is as low as possible as the movable load of the voice coil 4.
- FIG. 6 shows the power linearity of a conventional speaker, that is, the vibration with respect to the speaker input power. Shows the amplitude (displacement) of the moving plate 5.
- the symbol A in the figure indicates the amplitude characteristic of the diaphragm 5 facing the magnetic circuit 1
- B indicates the amplitude characteristic of the diaphragm 5 facing in the opposite direction to the magnetic circuit 1.
- Fig. 7 shows the harmonic distortion characteristics of a conventional speaker.
- symbol C indicates the frequency characteristics of the speaker
- D indicates the second harmonic distortion characteristic
- E indicates the third harmonic distortion characteristic. .
- the damper 8 is configured by combining a plurality of waveforms so as to reduce the movable load as described above. Therefore, as long as the suspension is configured by combining damper 8 and edge 6, the high performance of the spinning force, which is difficult to reduce harmonic distortion by solving nonlinearity and asymmetry, should be satisfied. That is, ena,.
- the speaker shown in FIG. 8 also has problems to be improved. Because it has a second edge 6a, the magnetic circuit 1 must be located inward. As a result, particularly the magnet la of the magnetic circuit 1 is also reduced, which may reduce the driving force of the voice coil 4 and reduce the audio output.
- the present invention is a vibration having a concave frame having an opening on the upper surface side and an opening portion of the frame, and an outer peripheral side thereof being fixed to the opening edge portion of the frame via a first edge.
- Plate, voice coil provided on the bottom side of the diaphragm, and less voice coil Both of them have a magnetic circuit that is movably arranged in the magnetic gap, and a suspension holder whose outer peripheral side is fixed to the frame via a second edge on the lower surface side of the vibration plate in the frame.
- the first and second edges are symmetrical with respect to the boundary between the first and second edges, and the inner circumference side of the suspension holder and the inner circumference side of the diaphragm are voiced.
- the magnet is fixed directly or indirectly to the outer part of the magnetic gap of the coil, and the magnetic circuit is provided outside the bottom of the frame, and its outer circumference extends at least outside the center of the second edge.
- the magnetic gap of the magnetic circuit provides a speaker that penetrates through the bottom surface of the frame and enters the frame.
- FIG. 1 is a cross-sectional view of a speaker according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a speaker according to another embodiment of the present invention.
- FIG. 3 is a diagram showing the power linearity of the speaker shown in FIG.
- FIG. 4 is a diagram showing the harmonic distortion characteristics of the speaker shown in FIG.
- FIG. 5 is a cross-sectional view of a conventional speaker.
- FIG. 6 is a diagram showing power linearity of a conventional speaker.
- FIG. 7 is a diagram showing harmonic distortion characteristics of a conventional speaker.
- FIG. 8 is a cross-sectional view showing another conventional speaker.
- the speaker of the present invention has the following configuration.
- a concave frame having an opening on the upper surface side, a diaphragm provided at an opening portion of the frame, and an outer peripheral side thereof fixed to the opening edge portion of the frame via a first edge, and a lower surface of the diaphragm
- a voice coil provided on the side, a magnetic circuit at least partly of the voice coil, a magnetic circuit movably disposed in the magnetic gap, and an outer peripheral side of the lower surface of the diaphragm in the frame has a second edge on the frame.
- the first and second edges are substantially symmetrical with respect to the boundary between the first and second edges.
- the magnetic circuit is provided outside the bottom of the frame, and has a magnet whose outer periphery extends at least outside the center of the second edge.
- the magnetic gap of the magnetic circuit covers the bottom of the frame.
- a speaker having a shape that penetrates into a frame.
- the speaker of the present invention is such that the voice coil is supported by the diaphragm, the suspension holder, and the first and second edges that are substantially symmetrical with respect to the boundary between the edges.
- the diaphragm can be moved up and down smoothly, and sound reproduction distortion can be reduced.
- the speaker of the present invention can increase the driving force of the voice coil and increase the sound output.
- the concave frame 9 Has an opening on the upper surface side, and is formed by narrowing the metal plate into a concave shape.
- a circular ring-shaped diaphragm 10 is provided on the upper surface opening portion of the frame 9.
- the outer peripheral side of the diaphragm 10 is fixed to the opening edge portion of the frame 9 through a rubber-made first ring-like edge 11.
- a cylindrical voice coil 12 is provided on the lower surface side of the diaphragm 10. At least the lower coil portion 13 of the voice coil 12 is disposed in the magnetic gap 14 so as to be movable up and down.
- the outer peripheral side of the cylindrical trapezoidal suspension holder 15 is fixed to the frame 9 via a rubber-made second edge 16 on the lower surface side of the diaphragm 10 in the frame 9.
- the first and second edges 11 and 16 are substantially symmetrical with respect to a boundary between the first and second edges 11 and 16. Specifically, the first edge 11 protrudes upward in a semicircular shape, and the second edge 16 protrudes downward in a semicircular shape. Also, the inner circumference side of the suspension holder 15 and the inner circumference side of the diaphragm 10 are overlapped and integrated with an adhesive, and the magnetic gap 14 of the voice coil 12 is directly or indirectly attached to the outer portion of the magnetic coil 14 with an adhesive or the like. Fixed.
- the inner peripheral side of the suspension holder 15 and the inner peripheral side of the diaphragm 10 are integrated, and both are directly fixed to the outer periphery of the voice coil 12.
- the inner periphery of the diaphragm 10 is fixed to the outer periphery of the voice coil 12, and the inner periphery side of the suspension holder 15 is made smaller than that in FIG. It may be fixed with.
- the inner periphery of the suspension holder 15 may be fixed to the outer periphery of the voice coil 12
- the inner periphery side of the diaphragm 10 may be made smaller than that in FIG. 1, and it may be fixed to the upper surface of the suspension holder 15 with an adhesive.
- the magnetic circuit 17 for forming the magnetic gap 14 is provided outside the bottom of the frame 9 and its outer periphery is at least outside the center of the second edge 16. It has up to 18 magnets.
- the magnetic circuit 17 will be further described in detail.
- the magnetic circuit 17 includes a yoke 20 having a columnar protrusion 19 formed on the upper surface of a disk-shaped body, a ring-shaped magnet 18 stacked on the yoke 20, and an outer peripheral portion stacked on the magnet 18, and an inner peripheral portion. Is York 20
- the ring-shaped plate 21 is inserted into the frame 9 together with the columnar protrusion 19 and forms a magnetic gap 14 with the outer periphery of the columnar protrusion 19.
- the magnetic gap 14 penetrates through the bottom surface of the frame 9 and enters the center of the frame 9.
- the disc-shaped yoke 20, the ring-shaped magnet 18, and the ring-shaped plate 21 are integrally bonded together, and a bolt (not shown) is provided outside the bottom surface of the frame 9. It is fixed by. Further, as shown in FIG. 2, a top plate 25 is laminated on the columnar protrusion 19 of the yoke 20, and a magnetic gear 14 is formed between the outer periphery of the top plate 25 and the ring-shaped plate 21. OK.
- a step portion 22 for fixing the second edge 16 with an adhesive is formed in the lower portion of the side surface of the frame 9.
- a vent hole 23 is formed in the side surface portion of the frame 9 below the step portion 22.
- the vent hole 23 is formed for ventilation.
- the dust filter 24 may be provided on the outer side portion of the frame 9 of the vent hole 23. This can prevent the dust filter 24 from obstructing the vertical movement of the second edge 16.
- the magnet 18 of the magnetic circuit 17 can have a size that extends to the outside of the second edge 16 as shown in FIG. 1, in which case the driving force of the voice coil 12 is further increased. Can be bigger.
- a suspension by a suspension holder 15 and a second edge 16 is provided between the voice coil 12 and the frame 9 in place of the conventional damper.
- the suspension holder 15 and the second edge 16 constitute a suspension together with the first edge 11, and are provided so that the voice coil 12 does not roll when moving up and down.
- the suspension can be constituted by the first edge 11 and the second edge 16, and the damper that causes the nonlinearity and asymmetry of the suspension can be eliminated.
- the first edge 11 and the second edge 16 have substantially symmetric similar shapes so as to cancel their own asymmetry. Specifically, the first edge 11 and the second edge 16 are opposed to each other so that the protruding directions are opposite. This ⁇
- the two lines indicated by symbols A and B in Fig. 3 representing linearity are almost identical. In other words, the nonlinearity and asymmetry of the suspension can be fundamentally solved in this way.
- harmonic distortion caused by suspension nonlinearity and asymmetry can be reduced. As a result, the performance of the speaker can be improved.
- the present invention can provide a speaker in which the vibration distortion of the diaphragm is small and the driving force of the voice coil is large. This speaker can be widely used for various audio equipment.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05768785A EP1786237B1 (en) | 2004-08-27 | 2005-08-02 | Speaker |
DE602005024018T DE602005024018D1 (de) | 2004-08-27 | 2005-08-02 | Lautsprecher |
US10/568,278 US7532736B2 (en) | 2004-08-27 | 2005-08-02 | Speaker |
CN2005800009537A CN1843057B (zh) | 2004-08-27 | 2005-08-02 | 扬声器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004248046A JP4604609B2 (ja) | 2004-08-27 | 2004-08-27 | スピーカ |
JP2004-248046 | 2004-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006022119A1 true WO2006022119A1 (ja) | 2006-03-02 |
Family
ID=35967338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/014069 WO2006022119A1 (ja) | 2004-08-27 | 2005-08-02 | スピーカ |
Country Status (7)
Country | Link |
---|---|
US (1) | US7532736B2 (ja) |
EP (1) | EP1786237B1 (ja) |
JP (1) | JP4604609B2 (ja) |
KR (1) | KR100747938B1 (ja) |
CN (1) | CN1843057B (ja) |
DE (1) | DE602005024018D1 (ja) |
WO (1) | WO2006022119A1 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7225895B2 (en) * | 1998-11-30 | 2007-06-05 | Joseph Yaacoub Sahyoun | Audio speaker with wobble free voice coil movement |
US20040188175A1 (en) * | 1998-11-30 | 2004-09-30 | Sahyoun Joseph Yaacoub | Audio speaker with wobble free voice coil movement |
JP4867774B2 (ja) * | 2007-04-26 | 2012-02-01 | パナソニック株式会社 | スピーカ |
KR100957539B1 (ko) * | 2008-02-29 | 2010-05-11 | 에스텍 주식회사 | 스피커 |
US8204269B2 (en) * | 2008-08-08 | 2012-06-19 | Sahyoun Joseph Y | Low profile audio speaker with minimization of voice coil wobble, protection and cooling |
JP5035190B2 (ja) * | 2008-09-16 | 2012-09-26 | パナソニック株式会社 | スピーカ |
KR101085237B1 (ko) * | 2009-10-15 | 2011-11-21 | 비에취어쿠스텔 주식회사 | 슬림형 스피커 |
KR101101991B1 (ko) * | 2009-10-15 | 2012-01-02 | 비에취어쿠스텔 주식회사 | 슬림형 스피커 |
TW201410039A (zh) * | 2012-08-27 | 2014-03-01 | Gen Infinity Co Ltd | 揚聲器結構改良 |
CN202949560U (zh) * | 2012-11-16 | 2013-05-22 | 瑞声声学科技(常州)有限公司 | 发声器 |
US9485586B2 (en) | 2013-03-15 | 2016-11-01 | Jeffery K Permanian | Speaker driver |
CN103414985B (zh) * | 2013-08-16 | 2016-05-11 | 常州博士达电子有限公司 | 微型扬声器的悬挂结构 |
FR3014628B1 (fr) * | 2013-12-05 | 2017-04-21 | Devialet | Haut-parleur electrodynamique compact a membrane convexe |
GB2542382A (en) | 2015-09-17 | 2017-03-22 | Gp Acoustics (Uk) Ltd | Low-profile loudspeaker |
CN112492469B (zh) * | 2020-12-25 | 2022-03-25 | 瑞声新能源发展(常州)有限公司科教城分公司 | 发声器件 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003264891A (ja) * | 2002-03-07 | 2003-09-19 | Minebea Co Ltd | スピーカ及びその製法 |
JP2004007333A (ja) * | 2002-04-15 | 2004-01-08 | Matsushita Electric Ind Co Ltd | スピーカ |
JP2004007335A (ja) * | 2002-04-15 | 2004-01-08 | Matsushita Electric Ind Co Ltd | スピーカ |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR983550A (fr) * | 1949-02-03 | 1951-06-25 | Haut-parleur perfectionné | |
JPS5781000U (ja) * | 1980-11-05 | 1982-05-19 | ||
JPS58161600A (ja) * | 1982-03-19 | 1983-09-26 | Matsushita Electric Ind Co Ltd | スピ−カ |
JPH03220897A (ja) * | 1990-01-25 | 1991-09-30 | Matsushita Electric Ind Co Ltd | スピーカ |
JP3611371B2 (ja) * | 1995-05-09 | 2005-01-19 | フオスター電機株式会社 | 防塵布及びその接着方法 |
KR100445212B1 (ko) * | 1996-05-31 | 2004-12-03 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 전기역학적확성기및확성기시스템 |
JPH11275690A (ja) | 1998-03-26 | 1999-10-08 | Sony Corp | スピーカ |
US6243479B1 (en) * | 1999-12-08 | 2001-06-05 | Lucio Proni | Loudspeaker having pole piece with integral vent bores |
DE10120281C1 (de) * | 2001-04-25 | 2002-12-05 | Harman Audio Electronic Sys | Lautsprecher |
KR100500804B1 (ko) * | 2001-06-11 | 2005-07-12 | 마츠시타 덴끼 산교 가부시키가이샤 | 스피커 |
JP3946047B2 (ja) * | 2002-01-21 | 2007-07-18 | アルパイン株式会社 | スピーカの磁気回路 |
JP3651454B2 (ja) * | 2002-04-15 | 2005-05-25 | 松下電器産業株式会社 | スピーカ |
JP3651472B2 (ja) * | 2003-10-14 | 2005-05-25 | 松下電器産業株式会社 | スピーカ |
-
2004
- 2004-08-27 JP JP2004248046A patent/JP4604609B2/ja not_active Expired - Fee Related
-
2005
- 2005-08-02 KR KR1020067004079A patent/KR100747938B1/ko not_active IP Right Cessation
- 2005-08-02 WO PCT/JP2005/014069 patent/WO2006022119A1/ja active Application Filing
- 2005-08-02 US US10/568,278 patent/US7532736B2/en not_active Expired - Fee Related
- 2005-08-02 CN CN2005800009537A patent/CN1843057B/zh not_active Expired - Fee Related
- 2005-08-02 EP EP05768785A patent/EP1786237B1/en not_active Expired - Fee Related
- 2005-08-02 DE DE602005024018T patent/DE602005024018D1/de active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003264891A (ja) * | 2002-03-07 | 2003-09-19 | Minebea Co Ltd | スピーカ及びその製法 |
JP2004007333A (ja) * | 2002-04-15 | 2004-01-08 | Matsushita Electric Ind Co Ltd | スピーカ |
JP2004007335A (ja) * | 2002-04-15 | 2004-01-08 | Matsushita Electric Ind Co Ltd | スピーカ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1786237A4 * |
Also Published As
Publication number | Publication date |
---|---|
KR20060060708A (ko) | 2006-06-05 |
JP2006067282A (ja) | 2006-03-09 |
CN1843057B (zh) | 2010-06-23 |
JP4604609B2 (ja) | 2011-01-05 |
EP1786237A4 (en) | 2009-11-11 |
KR100747938B1 (ko) | 2007-08-08 |
EP1786237B1 (en) | 2010-10-06 |
EP1786237A1 (en) | 2007-05-16 |
DE602005024018D1 (de) | 2010-11-18 |
US20060285718A1 (en) | 2006-12-21 |
US7532736B2 (en) | 2009-05-12 |
CN1843057A (zh) | 2006-10-04 |
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