SPEAKER

PROBLEM TO BE SOLVED: To provide a speaker of low distortion which avoids collision of a voice coil and a voice coil bobbin in a magnetic air-gap, even at the time of large amplitudes. SOLUTION: A 1st and 2nd magnets 22 and 23 are magnetically magnetized in repelling directions, magnetic circuits ar...

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1. Verfasser:	KOURA TETSUJI
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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creator	KOURA TETSUJI
description	PROBLEM TO BE SOLVED: To provide a speaker of low distortion which avoids collision of a voice coil and a voice coil bobbin in a magnetic air-gap, even at the time of large amplitudes. SOLUTION: A 1st and 2nd magnets 22 and 23 are magnetically magnetized in repelling directions, magnetic circuits are constructed by forming a main magnetic air-gap between the outer peripheral plane of a 1st center pole 21 and the inner peripheral plane of a yoke 28 and 1st and 2nd sub magnetic air-gaps b and c between the outer peripheral plane of a top plate 24 and an under plate 25 respectively, and the inner peripheral plane of a yoke 28, a voice coil bobbin 31 and a 2nd frame 29 are attached to the inner and outer peripheral parts of a 1st damper 22 respectively upper than the plate 24, and the bobbin 31 and a 1st frame 27 are attached to the inner and outer peripheral parts of a 2nd damper 33 respectively lower than the plate 25.
format	Patent
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SOLUTION: A 1st and 2nd magnets 22 and 23 are magnetically magnetized in repelling directions, magnetic circuits are constructed by forming a main magnetic air-gap between the outer peripheral plane of a 1st center pole 21 and the inner peripheral plane of a yoke 28 and 1st and 2nd sub magnetic air-gaps b and c between the outer peripheral plane of a top plate 24 and an under plate 25 respectively, and the inner peripheral plane of a yoke 28, a voice coil bobbin 31 and a 2nd frame 29 are attached to the inner and outer peripheral parts of a 1st damper 22 respectively upper than the plate 24, and the bobbin 31 and a 1st frame 27 are attached to the inner and outer peripheral parts of a 2nd damper 33 respectively lower than the plate 25.</description><edition>6</edition><language>eng</language><subject>DEAF-AID SETS ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS ; PUBLIC ADDRESS SYSTEMS</subject><creationdate>1998</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19980306&DB=EPODOC&CC=JP&NR=H1066191A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25544,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19980306&DB=EPODOC&CC=JP&NR=H1066191A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KOURA TETSUJI</creatorcontrib><title>SPEAKER</title><description>PROBLEM TO BE SOLVED: To provide a speaker of low distortion which avoids collision of a voice coil and a voice coil bobbin in a magnetic air-gap, even at the time of large amplitudes. SOLUTION: A 1st and 2nd magnets 22 and 23 are magnetically magnetized in repelling directions, magnetic circuits are constructed by forming a main magnetic air-gap between the outer peripheral plane of a 1st center pole 21 and the inner peripheral plane of a yoke 28 and 1st and 2nd sub magnetic air-gaps b and c between the outer peripheral plane of a top plate 24 and an under plate 25 respectively, and the inner peripheral plane of a yoke 28, a voice coil bobbin 31 and a 2nd frame 29 are attached to the inner and outer peripheral parts of a 1st damper 22 respectively upper than the plate 24, and the bobbin 31 and a 1st frame 27 are attached to the inner and outer peripheral parts of a 2nd damper 33 respectively lower than the plate 25.</description><subject>DEAF-AID SETS</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS</subject><subject>PUBLIC ADDRESS SYSTEMS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1998</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZGAPDnB19HYN4mFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8V4BHoYGZmaGloaOxkQoAQDY5RrJ</recordid><startdate>19980306</startdate><enddate>19980306</enddate><creator>KOURA TETSUJI</creator><scope>EVB</scope></search><sort><creationdate>19980306</creationdate><title>SPEAKER</title><author>KOURA TETSUJI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH1066191A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1998</creationdate><topic>DEAF-AID SETS</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS</topic><topic>PUBLIC ADDRESS SYSTEMS</topic><toplevel>online_resources</toplevel><creatorcontrib>KOURA TETSUJI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KOURA TETSUJI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>SPEAKER</title><date>1998-03-06</date><risdate>1998</risdate><abstract>PROBLEM TO BE SOLVED: To provide a speaker of low distortion which avoids collision of a voice coil and a voice coil bobbin in a magnetic air-gap, even at the time of large amplitudes. SOLUTION: A 1st and 2nd magnets 22 and 23 are magnetically magnetized in repelling directions, magnetic circuits are constructed by forming a main magnetic air-gap between the outer peripheral plane of a 1st center pole 21 and the inner peripheral plane of a yoke 28 and 1st and 2nd sub magnetic air-gaps b and c between the outer peripheral plane of a top plate 24 and an under plate 25 respectively, and the inner peripheral plane of a yoke 28, a voice coil bobbin 31 and a 2nd frame 29 are attached to the inner and outer peripheral parts of a 1st damper 22 respectively upper than the plate 24, and the bobbin 31 and a 1st frame 27 are attached to the inner and outer peripheral parts of a 2nd damper 33 respectively lower than the plate 25.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
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subjects	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
title	SPEAKER
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