SPARK PLUG
The metallic shell of a spark plug has an enhanced insulator retaining performance. The spark plug includes a ceramic insulator having a generally tubular shape and a through hole extending in the axial direction, the ceramic insulator having a center electrode on a forward end side of the through h...
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| creator | KIUCHI, Kentaro TERANISHI, Yuusuke MORI, Kazuhiko MIZUTANI, Hironobu |
| description | The metallic shell of a spark plug has an enhanced insulator retaining performance. The spark plug includes a ceramic insulator having a generally tubular shape and a through hole extending in the axial direction, the ceramic insulator having a center electrode on a forward end side of the through hole in the direction of the axial line. The spark plug also includes a metallic shell formed in a generally cylindrical shape and having a crimp portion at a rear end of the metallic shell in the axial direction, the crimp portion being crimped in a state in which the ceramic insulator is inserted into the metallic shell so that the ceramic insulator is held by the metallic shell. The crimp portion satisfies a relation of A ¥ 1.7 mm and a relation of t ¥ 1.20 mm in a cross section of the crimp portion taken along a plane containing the axial line, where A is the distance between a closest point which is a point within the cross section closest to the ceramic insulator and an intersection at which a first orthogonal line passing through the closest point and orthogonal to the axial line intersects with an outer circumference of the crimp portion, and t is a thickness of the proximal end of of the crimp portion. |
| format | Patent |
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The spark plug includes a ceramic insulator having a generally tubular shape and a through hole extending in the axial direction, the ceramic insulator having a center electrode on a forward end side of the through hole in the direction of the axial line. The spark plug also includes a metallic shell formed in a generally cylindrical shape and having a crimp portion at a rear end of the metallic shell in the axial direction, the crimp portion being crimped in a state in which the ceramic insulator is inserted into the metallic shell so that the ceramic insulator is held by the metallic shell. The crimp portion satisfies a relation of A ¥ 1.7 mm and a relation of t ¥ 1.20 mm in a cross section of the crimp portion taken along a plane containing the axial line, where A is the distance between a closest point which is a point within the cross section closest to the ceramic insulator and an intersection at which a first orthogonal line passing through the closest point and orthogonal to the axial line intersects with an outer circumference of the crimp portion, and t is a thickness of the proximal end of of the crimp portion.</description><language>eng ; fre ; ger</language><subject>BASIC ELECTRIC ELEMENTS ; CORONA DEVICES ; ELECTRICITY ; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES ; OVERVOLTAGE ARRESTERS USING SPARK GAPS ; SPARK GAPS ; SPARKING PLUGS</subject><creationdate>2018</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=20180221&DB=EPODOC&CC=EP&NR=3285344A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180221&DB=EPODOC&CC=EP&NR=3285344A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KIUCHI, Kentaro</creatorcontrib><creatorcontrib>TERANISHI, Yuusuke</creatorcontrib><creatorcontrib>MORI, Kazuhiko</creatorcontrib><creatorcontrib>MIZUTANI, Hironobu</creatorcontrib><title>SPARK PLUG</title><description>The metallic shell of a spark plug has an enhanced insulator retaining performance. The spark plug includes a ceramic insulator having a generally tubular shape and a through hole extending in the axial direction, the ceramic insulator having a center electrode on a forward end side of the through hole in the direction of the axial line. The spark plug also includes a metallic shell formed in a generally cylindrical shape and having a crimp portion at a rear end of the metallic shell in the axial direction, the crimp portion being crimped in a state in which the ceramic insulator is inserted into the metallic shell so that the ceramic insulator is held by the metallic shell. The crimp portion satisfies a relation of A ¥ 1.7 mm and a relation of t ¥ 1.20 mm in a cross section of the crimp portion taken along a plane containing the axial line, where A is the distance between a closest point which is a point within the cross section closest to the ceramic insulator and an intersection at which a first orthogonal line passing through the closest point and orthogonal to the axial line intersects with an outer circumference of the crimp portion, and t is a thickness of the proximal end of of the crimp portion.</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CORONA DEVICES</subject><subject>ELECTRICITY</subject><subject>GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES</subject><subject>OVERVOLTAGE ARRESTERS USING SPARK GAPS</subject><subject>SPARK GAPS</subject><subject>SPARKING PLUGS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOAKDnAM8lYI8Al152FgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8a4BxkYWpsYmJo6GxkQoAQAiPxts</recordid><startdate>20180221</startdate><enddate>20180221</enddate><creator>KIUCHI, Kentaro</creator><creator>TERANISHI, Yuusuke</creator><creator>MORI, Kazuhiko</creator><creator>MIZUTANI, Hironobu</creator><scope>EVB</scope></search><sort><creationdate>20180221</creationdate><title>SPARK PLUG</title><author>KIUCHI, Kentaro ; TERANISHI, Yuusuke ; MORI, Kazuhiko ; MIZUTANI, Hironobu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3285344A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2018</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>CORONA DEVICES</topic><topic>ELECTRICITY</topic><topic>GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES</topic><topic>OVERVOLTAGE ARRESTERS USING SPARK GAPS</topic><topic>SPARK GAPS</topic><topic>SPARKING PLUGS</topic><toplevel>online_resources</toplevel><creatorcontrib>KIUCHI, Kentaro</creatorcontrib><creatorcontrib>TERANISHI, Yuusuke</creatorcontrib><creatorcontrib>MORI, Kazuhiko</creatorcontrib><creatorcontrib>MIZUTANI, Hironobu</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KIUCHI, Kentaro</au><au>TERANISHI, Yuusuke</au><au>MORI, Kazuhiko</au><au>MIZUTANI, Hironobu</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>SPARK PLUG</title><date>2018-02-21</date><risdate>2018</risdate><abstract>The metallic shell of a spark plug has an enhanced insulator retaining performance. The spark plug includes a ceramic insulator having a generally tubular shape and a through hole extending in the axial direction, the ceramic insulator having a center electrode on a forward end side of the through hole in the direction of the axial line. The spark plug also includes a metallic shell formed in a generally cylindrical shape and having a crimp portion at a rear end of the metallic shell in the axial direction, the crimp portion being crimped in a state in which the ceramic insulator is inserted into the metallic shell so that the ceramic insulator is held by the metallic shell. The crimp portion satisfies a relation of A ¥ 1.7 mm and a relation of t ¥ 1.20 mm in a cross section of the crimp portion taken along a plane containing the axial line, where A is the distance between a closest point which is a point within the cross section closest to the ceramic insulator and an intersection at which a first orthogonal line passing through the closest point and orthogonal to the axial line intersects with an outer circumference of the crimp portion, and t is a thickness of the proximal end of of the crimp portion.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | BASIC ELECTRIC ELEMENTS CORONA DEVICES ELECTRICITY GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES OVERVOLTAGE ARRESTERS USING SPARK GAPS SPARK GAPS SPARKING PLUGS |
| title | SPARK PLUG |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-06T00%3A00%3A24IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=KIUCHI,%20Kentaro&rft.date=2018-02-21&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EEP3285344A1%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |