ELECTRIC MOTOR
PROBLEM TO BE SOLVED: To reduce both current ripple and rotational shake.SOLUTION: In an electric motor 40 comprising a pair of magnets forming counter electrodes and eight slots, namely, in the electric motor 40 of [2P8S] capable of suppressing rotational shake by reducing a whirling electromagneti...
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| creator | SAITO KEIKI SUZUKI ISAO AIDA SATOSHI MISHIMA HAJIME TAKAKUSAKI RYUICHI |
| description | PROBLEM TO BE SOLVED: To reduce both current ripple and rotational shake.SOLUTION: In an electric motor 40 comprising a pair of magnets forming counter electrodes and eight slots, namely, in the electric motor 40 of [2P8S] capable of suppressing rotational shake by reducing a whirling electromagnetic force, a separation distance X[deg] between end faces SF1 and SF2 of brushes BR1 and BR2 in a circumferential direction of a commutator 49 is made meet (((2×n)-2)/2)×(360/(2×n))≤X |
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| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JP2017153168A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JP2017153168A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JP2017153168A3</originalsourceid><addsrcrecordid>eNrjZOBz9XF1DgnydFbw9Q_xD-JhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFeAUYGhuaGpsaGZhaOxkQpAgACcx1p</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>ELECTRIC MOTOR</title><source>esp@cenet</source><creator>SAITO KEIKI ; SUZUKI ISAO ; AIDA SATOSHI ; MISHIMA HAJIME ; TAKAKUSAKI RYUICHI</creator><creatorcontrib>SAITO KEIKI ; SUZUKI ISAO ; AIDA SATOSHI ; MISHIMA HAJIME ; TAKAKUSAKI RYUICHI</creatorcontrib><description>PROBLEM TO BE SOLVED: To reduce both current ripple and rotational shake.SOLUTION: In an electric motor 40 comprising a pair of magnets forming counter electrodes and eight slots, namely, in the electric motor 40 of [2P8S] capable of suppressing rotational shake by reducing a whirling electromagnetic force, a separation distance X[deg] between end faces SF1 and SF2 of brushes BR1 and BR2 in a circumferential direction of a commutator 49 is made meet (((2×n)-2)/2)×(360/(2×n))≤X<180. such that the first brush BR1 and the second brush BR2 are prevented from being disposed oppositely to each other in mirror image symmetry with an axial center of the commutator 49 defined as a center. Thus, the first brush BR1 and the second brush BR2 can be prevented from being simultaneously spread over neighboring segments 49a with rotations of the commutator 49, thereby preventing current ripple from being enlarged.SELECTED DRAWING: Figure 5
【課題】電流リプルおよび回転ブレの双方を小さくする。【解決手段】対極をなす一対のマグネットと、８個のスロットとを有する電動モータ４０、つまり振れ回り電磁力を小さくして回転ブレを抑えることができる［２Ｐ８Ｓ］の電動モータ４０において、第１ブラシＢＲ１および第２ブラシＢＲ２を、コンミテータ４９の軸心を中心として互いに鏡像対称で対向配置されないように、コンミテータ４９の周方向に沿う各ブラシＢＲ１，ＢＲ２の各端面ＳＦ１，ＳＦ２の間の離間角度Ｘ［deg］が、（（（２×ｎ）−２）／２）×（３６０／（２×ｎ））≦Ｘ＜１８０を満たすようにした。これにより、コンミテータ４９の回転に伴い、第１ブラシＢＲ１および第２ブラシＢＲ２が隣り合うセグメント４９ａを同時に跨がないようにでき、ひいては電流リプルが大きくなるのを抑制できる。【選択図】図５</description><language>eng ; jpn</language><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; DYNAMO-ELECTRIC MACHINES ; ELECTRICITY ; GENERATION</subject><creationdate>2017</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=20170831&DB=EPODOC&CC=JP&NR=2017153168A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170831&DB=EPODOC&CC=JP&NR=2017153168A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SAITO KEIKI</creatorcontrib><creatorcontrib>SUZUKI ISAO</creatorcontrib><creatorcontrib>AIDA SATOSHI</creatorcontrib><creatorcontrib>MISHIMA HAJIME</creatorcontrib><creatorcontrib>TAKAKUSAKI RYUICHI</creatorcontrib><title>ELECTRIC MOTOR</title><description>PROBLEM TO BE SOLVED: To reduce both current ripple and rotational shake.SOLUTION: In an electric motor 40 comprising a pair of magnets forming counter electrodes and eight slots, namely, in the electric motor 40 of [2P8S] capable of suppressing rotational shake by reducing a whirling electromagnetic force, a separation distance X[deg] between end faces SF1 and SF2 of brushes BR1 and BR2 in a circumferential direction of a commutator 49 is made meet (((2×n)-2)/2)×(360/(2×n))≤X<180. such that the first brush BR1 and the second brush BR2 are prevented from being disposed oppositely to each other in mirror image symmetry with an axial center of the commutator 49 defined as a center. Thus, the first brush BR1 and the second brush BR2 can be prevented from being simultaneously spread over neighboring segments 49a with rotations of the commutator 49, thereby preventing current ripple from being enlarged.SELECTED DRAWING: Figure 5
【課題】電流リプルおよび回転ブレの双方を小さくする。【解決手段】対極をなす一対のマグネットと、８個のスロットとを有する電動モータ４０、つまり振れ回り電磁力を小さくして回転ブレを抑えることができる［２Ｐ８Ｓ］の電動モータ４０において、第１ブラシＢＲ１および第２ブラシＢＲ２を、コンミテータ４９の軸心を中心として互いに鏡像対称で対向配置されないように、コンミテータ４９の周方向に沿う各ブラシＢＲ１，ＢＲ２の各端面ＳＦ１，ＳＦ２の間の離間角度Ｘ［deg］が、（（（２×ｎ）−２）／２）×（３６０／（２×ｎ））≦Ｘ＜１８０を満たすようにした。これにより、コンミテータ４９の回転に伴い、第１ブラシＢＲ１および第２ブラシＢＲ２が隣り合うセグメント４９ａを同時に跨がないようにでき、ひいては電流リプルが大きくなるのを抑制できる。【選択図】図５</description><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>DYNAMO-ELECTRIC MACHINES</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOBz9XF1DgnydFbw9Q_xD-JhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFeAUYGhuaGpsaGZhaOxkQpAgACcx1p</recordid><startdate>20170831</startdate><enddate>20170831</enddate><creator>SAITO KEIKI</creator><creator>SUZUKI ISAO</creator><creator>AIDA SATOSHI</creator><creator>MISHIMA HAJIME</creator><creator>TAKAKUSAKI RYUICHI</creator><scope>EVB</scope></search><sort><creationdate>20170831</creationdate><title>ELECTRIC MOTOR</title><author>SAITO KEIKI ; SUZUKI ISAO ; AIDA SATOSHI ; MISHIMA HAJIME ; TAKAKUSAKI RYUICHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2017153168A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2017</creationdate><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>DYNAMO-ELECTRIC MACHINES</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><toplevel>online_resources</toplevel><creatorcontrib>SAITO KEIKI</creatorcontrib><creatorcontrib>SUZUKI ISAO</creatorcontrib><creatorcontrib>AIDA SATOSHI</creatorcontrib><creatorcontrib>MISHIMA HAJIME</creatorcontrib><creatorcontrib>TAKAKUSAKI RYUICHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SAITO KEIKI</au><au>SUZUKI ISAO</au><au>AIDA SATOSHI</au><au>MISHIMA HAJIME</au><au>TAKAKUSAKI RYUICHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>ELECTRIC MOTOR</title><date>2017-08-31</date><risdate>2017</risdate><abstract>PROBLEM TO BE SOLVED: To reduce both current ripple and rotational shake.SOLUTION: In an electric motor 40 comprising a pair of magnets forming counter electrodes and eight slots, namely, in the electric motor 40 of [2P8S] capable of suppressing rotational shake by reducing a whirling electromagnetic force, a separation distance X[deg] between end faces SF1 and SF2 of brushes BR1 and BR2 in a circumferential direction of a commutator 49 is made meet (((2×n)-2)/2)×(360/(2×n))≤X<180. such that the first brush BR1 and the second brush BR2 are prevented from being disposed oppositely to each other in mirror image symmetry with an axial center of the commutator 49 defined as a center. Thus, the first brush BR1 and the second brush BR2 can be prevented from being simultaneously spread over neighboring segments 49a with rotations of the commutator 49, thereby preventing current ripple from being enlarged.SELECTED DRAWING: Figure 5
【課題】電流リプルおよび回転ブレの双方を小さくする。【解決手段】対極をなす一対のマグネットと、８個のスロットとを有する電動モータ４０、つまり振れ回り電磁力を小さくして回転ブレを抑えることができる［２Ｐ８Ｓ］の電動モータ４０において、第１ブラシＢＲ１および第２ブラシＢＲ２を、コンミテータ４９の軸心を中心として互いに鏡像対称で対向配置されないように、コンミテータ４９の周方向に沿う各ブラシＢＲ１，ＢＲ２の各端面ＳＦ１，ＳＦ２の間の離間角度Ｘ［deg］が、（（（２×ｎ）−２）／２）×（３６０／（２×ｎ））≦Ｘ＜１８０を満たすようにした。これにより、コンミテータ４９の回転に伴い、第１ブラシＢＲ１および第２ブラシＢＲ２が隣り合うセグメント４９ａを同時に跨がないようにでき、ひいては電流リプルが大きくなるのを抑制できる。【選択図】図５</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY GENERATION |
| title | ELECTRIC MOTOR |
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