WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Options
Query Language
Stem
Sort by:
List Length
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2006/013966 International Application No.: PCT/JP2005/014410
Publication Date: 09.02.2006 International Filing Date: 05.08.2005
IPC:
H04R 9/04 (2006.01) ,H04R 9/02 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
9
Transducers of moving-coil, moving-strip, or moving-wire type
02
Details
04
Construction, mounting, or centering of coil
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
9
Transducers of moving-coil, moving-strip, or moving-wire type
02
Details
Applicants: TSUDA, Shiro[JP/JP]; JP (UsOnly)
FUJIOKA, Satomi[JP/JP]; JP (UsOnly)
Ferrotec Corporation[JP/JP]; 4-14, Kyobashi 1-chome, Chuo-ku, Tokyo 1040031, JP (AllExceptUS)
Inventors: TSUDA, Shiro; JP
FUJIOKA, Satomi; JP
Agent: SAKAI, Masami; Akasaka Office Heights, 13-5, Akasaka 4-chome, Minato-ku, Tokyo 1070052, JP
Priority Data:
2004-23049306.08.2004JP
Title (EN) SPEAKER FILLED WITH MAGNETIC FLUID
(FR) HAUT-PARLEUR REMPLI DE FLUIDE MAGNÉTIQUE
(JA) 磁性流体が充填されたスピーカ
Abstract:
(EN) [OBJECT] To prevent a capillary force from acting on a bobbin by completely sealing a clearance between the surface of the bobbin and a wire and a slit portion with an oilproof magnetic fluid sealant or by providing sufficiently large clearances between the surface of the bobbin and the wire and the slit portion. [CONSTRUCTION] This speaker is so formed that the magnetic fluid is filled in a magnetic gap part in which a voice coil (22) is inserted. The speaker is characterized in that, to prevent the magnetic fluid from oozing out of the wire (12) extending from the voice coil (22), one or a plurality of dams (20) are formed of the magnetic fluid sealant on the wire (12) extracted from the coil (4) and/or between the wire (12) and the bobbin (23) and a dam (26) is formed at the slit (24) portion.
(FR) Pour empêcher une force capillaire d’agir sur une bobine en scellant complètement un jeu entre la surface de la bobine, un fil et une portion fendue avec un produit d’étanchéité de fluide magnétique étanche à l’huile ou bien en aménageant des espaces suffisamment grands entre la surface de la bobine, le fil et la portion fendue. Ce haut-parleur est formé de telle sorte que le fluide magnétique est rempli dans une pièce d’entrefer magnétique dans laquelle une bobine mobile (22) est introduite. Le haut-parleur est caractérisé en ce que, pour empêcher le fluide magnétique de fuir du fil (12) s’étendant de la bobine mobile (22), une digue ou bien une pluralité de digues (20) sont constituées du produit d’étanchéité de fluide magnétique sur le fil (12) extrait de la bobine mobile (4) et/ou entre le fil (12) et la bobine (23) et une digue (26) est formée au niveau de la portion fendue (24).
(JA) 【目的】 ボビンの表面とワイヤの間隙若しくはスリット部分を耐油性を有した磁性流体封止剤で完全に密封し、若しくは十分に広い間隙を設けることによって、毛管力が働かないようにする。 【構成】 ボイスコイル22が挿入される磁気ギャップ部に磁性流体が充填されたスピーカにおいて、該ボイスコイル22から延出するワイヤ12における磁性流体の滲出を防止するために、コイル4から引き出されたワイヤ12上及び/又はワイヤ12とボビン23の間に磁性流体封止剤により一又は複数の堰20を形成し、かつスリット24に堰26を形成したことを特徴とするスピーカである。
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)