EP1022929A3 - Lautsprecher mit einem ummantelten Magnetkern - Google Patents
Lautsprecher mit einem ummantelten Magnetkern Download PDFInfo
- Publication number
- EP1022929A3 EP1022929A3 EP00100968A EP00100968A EP1022929A3 EP 1022929 A3 EP1022929 A3 EP 1022929A3 EP 00100968 A EP00100968 A EP 00100968A EP 00100968 A EP00100968 A EP 00100968A EP 1022929 A3 EP1022929 A3 EP 1022929A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- loudspeaker
- permanent magnet
- alloy
- core
- rare earth
- 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
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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
-
- 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
- H01F41/026—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 protecting methods against environmental influences, e.g. oxygen, by surface treatment
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19902679 | 1999-01-23 | ||
DE1999102679 DE19902679C1 (de) | 1999-01-23 | 1999-01-23 | Lautsprecher |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1022929A2 EP1022929A2 (de) | 2000-07-26 |
EP1022929A3 true EP1022929A3 (de) | 2007-06-13 |
EP1022929B1 EP1022929B1 (de) | 2008-03-12 |
Family
ID=7895212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20000100968 Expired - Lifetime EP1022929B1 (de) | 1999-01-23 | 2000-01-19 | Lautsprecher mit einem ummantelten Magnetkern |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1022929B1 (de) |
DE (2) | DE19902679C1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011080606A1 (de) * | 2011-08-08 | 2013-02-14 | Sennheiser Electronic Gmbh & Co. Kg | Dynamischer elektroakustischer Wandler |
JP5724767B2 (ja) * | 2011-09-01 | 2015-05-27 | 住友金属鉱山株式会社 | スピーカ用外磁型磁気回路ユニット及びその製造方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0255816A2 (de) * | 1986-08-04 | 1988-02-10 | Treibacher Chemische Werke Aktiengesellschaft | Verfahren zur Herstellung korrosionsbeständiger, hartmagnetischer Pulver für die Magneterzeugung, Magnete aus hartmagnetischen Pulver und Verfahren zu deren Herstellung |
EP0323125A1 (de) * | 1987-12-28 | 1989-07-05 | Shin-Etsu Chemical Co., Ltd. | Permanent-Magnet aus seltenen Erden |
EP0441616A2 (de) * | 1990-02-09 | 1991-08-14 | Matsushita Electric Industrial Co., Ltd. | Anisotroper Verbundmagnet auf Basis Nd-Fe-B und Verfahren zur Herstellung |
US5269855A (en) * | 1989-08-25 | 1993-12-14 | Dowa Mining Co., Ltd. | Permanent magnet alloy having improved resistance |
EP0685983A2 (de) * | 1994-05-30 | 1995-12-06 | Matsushita Electric Industrial Co., Ltd. | Magnetische Schaltung für Lautsprecher und Verfahren zu ihrer Herstellung |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3730305C1 (de) * | 1987-09-10 | 1989-03-23 | Daimler Benz Ag | Lautsprecher |
-
1999
- 1999-01-23 DE DE1999102679 patent/DE19902679C1/de not_active Expired - Fee Related
-
2000
- 2000-01-19 EP EP20000100968 patent/EP1022929B1/de not_active Expired - Lifetime
- 2000-01-19 DE DE50015036T patent/DE50015036D1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0255816A2 (de) * | 1986-08-04 | 1988-02-10 | Treibacher Chemische Werke Aktiengesellschaft | Verfahren zur Herstellung korrosionsbeständiger, hartmagnetischer Pulver für die Magneterzeugung, Magnete aus hartmagnetischen Pulver und Verfahren zu deren Herstellung |
EP0323125A1 (de) * | 1987-12-28 | 1989-07-05 | Shin-Etsu Chemical Co., Ltd. | Permanent-Magnet aus seltenen Erden |
US5269855A (en) * | 1989-08-25 | 1993-12-14 | Dowa Mining Co., Ltd. | Permanent magnet alloy having improved resistance |
EP0441616A2 (de) * | 1990-02-09 | 1991-08-14 | Matsushita Electric Industrial Co., Ltd. | Anisotroper Verbundmagnet auf Basis Nd-Fe-B und Verfahren zur Herstellung |
EP0685983A2 (de) * | 1994-05-30 | 1995-12-06 | Matsushita Electric Industrial Co., Ltd. | Magnetische Schaltung für Lautsprecher und Verfahren zu ihrer Herstellung |
Also Published As
Publication number | Publication date |
---|---|
EP1022929B1 (de) | 2008-03-12 |
DE19902679C1 (de) | 2000-11-16 |
EP1022929A2 (de) | 2000-07-26 |
DE50015036D1 (de) | 2008-04-24 |
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