CN1310457A - 环形磁铁及其扬声器 - Google Patents
环形磁铁及其扬声器 Download PDFInfo
- Publication number
- CN1310457A CN1310457A CN00137646A CN00137646A CN1310457A CN 1310457 A CN1310457 A CN 1310457A CN 00137646 A CN00137646 A CN 00137646A CN 00137646 A CN00137646 A CN 00137646A CN 1310457 A CN1310457 A CN 1310457A
- Authority
- CN
- China
- Prior art keywords
- annular magnet
- loud speaker
- voice coil
- radial
- zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000004907 flux Effects 0.000 claims abstract description 23
- 238000009826 distribution Methods 0.000 claims abstract description 21
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 5
- 229910000765 intermetallic Inorganic materials 0.000 claims description 5
- 229910052779 Neodymium Inorganic materials 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052777 Praseodymium Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
- H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
- H01F7/0284—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles using a trimmable or adjustable magnetic circuit, e.g. for a symmetric dipole or quadrupole magnetic field
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0273—Imparting anisotropy
- H01F41/028—Radial anisotropy
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Hard Magnetic Materials (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
Description
例号 | 第1径向各向异性区域 | 第2径各向异性区域 | 第3径向各向异性区域 |
实施例1 | θ=79.6°约25体积% | θ=89.1°约50体积% | θ=79.9°约25体积% |
实施例2 | θ=80.2°约50体积% | θ=80.4°约50体积% | --- |
比较例1 | θ=89.1°100体积% | --- | --- |
Claims (6)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35767699A JP4433345B2 (ja) | 1999-12-16 | 1999-12-16 | リング磁石およびスピーカ |
JP357676/1999 | 1999-12-16 | ||
JP357676/99 | 1999-12-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1310457A true CN1310457A (zh) | 2001-08-29 |
CN1241212C CN1241212C (zh) | 2006-02-08 |
Family
ID=18455345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB001376462A Expired - Fee Related CN1241212C (zh) | 1999-12-16 | 2000-12-16 | 扬声器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US6529107B2 (zh) |
JP (1) | JP4433345B2 (zh) |
CN (1) | CN1241212C (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100498989C (zh) * | 2002-08-29 | 2009-06-10 | 信越化学工业株式会社 | 放射状各向异性环形磁铁的制造方法 |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3294841B2 (ja) * | 2000-09-19 | 2002-06-24 | 住友特殊金属株式会社 | 希土類磁石およびその製造方法 |
CN1388729A (zh) * | 2002-07-01 | 2003-01-01 | 斯贝克电子(嘉善)有限公司 | 双对称磁路双音圈双定心支片扬声器 |
JP4463048B2 (ja) * | 2004-08-27 | 2010-05-12 | アルパイン株式会社 | スピーカー |
WO2006064725A1 (ja) * | 2004-12-14 | 2006-06-22 | Matsushita Electric Industrial Co., Ltd. | スピーカ |
US7673678B2 (en) * | 2004-12-21 | 2010-03-09 | Schlumberger Technology Corporation | Flow control device with a permeable membrane |
WO2007031901A1 (en) * | 2005-09-15 | 2007-03-22 | Pss Belgium N.V. | Electrodynamic loudspeaker device |
US7541699B2 (en) * | 2005-12-27 | 2009-06-02 | Asml Netherlands B.V. | Magnet assembly, linear actuator, planar motor and lithographic apparatus |
US7857050B2 (en) * | 2006-05-26 | 2010-12-28 | Schlumberger Technology Corporation | Flow control using a tortuous path |
US7789145B2 (en) * | 2007-06-20 | 2010-09-07 | Schlumberger Technology Corporation | Inflow control device |
US20090000787A1 (en) * | 2007-06-27 | 2009-01-01 | Schlumberger Technology Corporation | Inflow control device |
JP4970544B2 (ja) * | 2007-09-12 | 2012-07-11 | パイオニア株式会社 | スピーカ用磁気回路、スピーカ装置及びスピーカ用磁気回路の製造方法 |
FR2921224B1 (fr) * | 2007-09-18 | 2009-12-04 | Orkidia Audio | Structure magnetique pour moteur sans fer de haut-parleur electrodynamique, moteurs et haut-parleurs |
US20090163186A1 (en) * | 2007-12-21 | 2009-06-25 | Yahoo! Inc. | Application program interface and graphical user interface for editorial review of mobile advertisement campaigns |
JP5544538B2 (ja) * | 2010-02-22 | 2014-07-09 | 多摩川精機株式会社 | 磁石埋め込み型円筒リニアモータ |
US9287029B1 (en) * | 2014-09-26 | 2016-03-15 | Audeze Llc. | Magnet arrays |
US9699565B2 (en) * | 2014-12-07 | 2017-07-04 | Cardas Audio Ltd. | Loudspeaker using contour field hard magnet poles and yoke construction |
CN105050011A (zh) * | 2015-08-07 | 2015-11-11 | 苏州博那德音响科技有限公司 | 环形电磁激励器及其扬声装置 |
TWI615859B (zh) * | 2016-10-14 | 2018-02-21 | 財團法人金屬工業研究發展中心 | 異向性磁石製造方法及磁石製造設備 |
RU2744770C1 (ru) * | 2020-07-29 | 2021-03-15 | Сотис АГ | Электродинамический привод для плоских акустических систем. |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CS213709B1 (en) | 1979-03-13 | 1982-04-09 | Vaclav Landa | Anizotropous permanent magnets |
JPH0423410A (ja) | 1990-05-18 | 1992-01-27 | Seiko Epson Corp | 異方性希土類磁石およびその製造方法 |
JP2972423B2 (ja) | 1991-12-20 | 1999-11-08 | アスモ株式会社 | 回転電機 |
JP3774876B2 (ja) | 1996-10-15 | 2006-05-17 | ミネベア株式会社 | 円筒状ラジアル異方性磁石の成形装置 |
JP2967340B2 (ja) | 1997-04-18 | 1999-10-25 | 一夫 中野 | 永久磁石式同期機 |
-
1999
- 1999-12-16 JP JP35767699A patent/JP4433345B2/ja not_active Expired - Lifetime
-
2000
- 2000-12-15 US US09/736,182 patent/US6529107B2/en not_active Expired - Lifetime
- 2000-12-16 CN CNB001376462A patent/CN1241212C/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100498989C (zh) * | 2002-08-29 | 2009-06-10 | 信越化学工业株式会社 | 放射状各向异性环形磁铁的制造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4433345B2 (ja) | 2010-03-17 |
CN1241212C (zh) | 2006-02-08 |
US20020075110A1 (en) | 2002-06-20 |
JP2001176723A (ja) | 2001-06-29 |
US6529107B2 (en) | 2003-03-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1241212C (zh) | 扬声器 | |
EP2063438B1 (en) | Production method of a radial anisotropic sintered magnet | |
CN101707107B (zh) | 一种高剩磁高矫顽力稀土永磁材料的制造方法 | |
CN111834118B (zh) | 一种提高烧结钕铁硼磁体矫顽力的方法及烧结钕铁硼磁体 | |
EP0685983B1 (en) | Magnetic circuit unit for loud-speaker and method of manufacturing the same | |
CN1934662A (zh) | 径向各向异性的圆柱形烧结磁体和永磁体电动机 | |
CN1080920C (zh) | 铁基永磁材料及其制造方法以及铁基粘结磁铁 | |
CN1685451A (zh) | 放射状各向异性环形磁铁及制造方法 | |
US9646751B2 (en) | Arcuate magnet having polar-anisotropic orientation, and method and molding die for producing it | |
CN1934663A (zh) | 径向各向异性的圆柱形烧结磁体和永磁体电动机用圆柱形多极磁体 | |
CN1176471A (zh) | 径向各向异性R-Fe-B基烧结磁体及其制造方法 | |
CN1249845A (zh) | 具有微晶结构的薄片磁体的制造方法 | |
US6312494B1 (en) | Arc segment magnet, ring magnet and method for producing such magnets | |
CN1117382C (zh) | 制造具有微晶组织的薄带磁体和各向同性永久磁体粉末的方法 | |
CN1250542A (zh) | 具有微晶结构的薄片磁体 | |
CN100348074C (zh) | 用于稀土磁体扬声器的低成本马达结构 | |
KR20160036064A (ko) | 영구자석식 회전기용 회전자 | |
CN1087744A (zh) | 用于生产各向异性粘结磁体的固态树脂涂覆磁粉及其制造方法 | |
JP4320710B2 (ja) | 極異方性リング磁石および成形金型 | |
CN2569479Y (zh) | 扬声器的闭合磁路结构 | |
JP3680648B2 (ja) | 永久磁石型モータその他の永久磁石応用装置 | |
CN2277153Y (zh) | 大功率高保真磁路装置 | |
JP6341115B2 (ja) | 極異方性リング磁石、及びそれを用いた回転子 | |
JP3051906B2 (ja) | 希土類磁石 | |
CN220570373U (zh) | 永磁同步电机用转子及永磁同步电机 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: WD Ref document number: 1037058 Country of ref document: HK |
|
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20010829 Assignee: Antai Science and Technology Co., Ltd. Assignor: Hitachi Metals Co., Ltd. Contract record no.: 2013990000365 Denomination of invention: Forming combination manufacturing method for loudspeaker vibration tray buffer ring edge Granted publication date: 20060208 License type: Common License Record date: 20130701 Application publication date: 20010829 Assignee: Beijing Jingci Magnet Co., Ltd. Assignor: Hitachi Metals Co., Ltd. Contract record no.: 2013990000374 Denomination of invention: Forming combination manufacturing method for loudspeaker vibration tray buffer ring edge Granted publication date: 20060208 License type: Common License Record date: 20130703 Application publication date: 20010829 Assignee: Beijing Zhongke Sanhuan High-Tech Co., Ltd. Assignor: Hitachi Metals Co., Ltd. Contract record no.: 2013990000364 Denomination of invention: Forming combination manufacturing method for loudspeaker vibration tray buffer ring edge Granted publication date: 20060208 License type: Common License Record date: 20130701 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20010829 Assignee: Ningbo Yunsheng Co., Ltd. Assignor: Hitachi Metals Co., Ltd. Contract record no.: 2014990000031 Denomination of invention: Forming combination manufacturing method for loudspeaker vibration tray buffer ring edge Granted publication date: 20060208 License type: Common License Record date: 20140114 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20010829 Assignee: Hitachi metal ring Ci material (Nantong) Co. Ltd. Assignor: Hitachi Metals Contract record no.: 2017990000034 Denomination of invention: Forming combination manufacturing method for loudspeaker vibration tray buffer ring edge Granted publication date: 20060208 License type: Common License Record date: 20170209 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
CI03 | Correction of invention patent | ||
CI03 | Correction of invention patent |
Correction item: A transferee of the entry into force of the contract Correct: Hitachi metal ring magnets (Nantong) Co. Ltd. False: Hitachi metal ring Ci material (Nantong) Co. Ltd. Number: 11 Volume: 33 |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060208 Termination date: 20191216 |
|
CF01 | Termination of patent right due to non-payment of annual fee |