发明名称 |
Method for manufacturing ignition plug |
摘要 |
<p>A method for manufacturing an ignition plug is provided. The method includes : preparing an insulator having a cavity provided at a leading end portion thereof by disposing a leading end of a center electrode more inwards in an axial hole than a leading end of the insulator; building the insulator in an interior of a metal shell; disposing a ground electrode at a leading end portion of the metal shell; positioning a center of a through hole of the ground electrode and a center of the cavity of the insulator; and welding the ground electrode and the metal shell together after the positioning step.</p> |
申请公布号 |
EP2099107(B1) |
申请公布日期 |
2015.05.13 |
申请号 |
EP20090154571 |
申请日期 |
2009.03.06 |
申请人 |
NGK SPARK PLUG CO., LTD. |
发明人 |
NAKAMURA, TORU;KATO, TOMOAKI;YAMADA, YUICHI |
分类号 |
H01T21/02;H01T13/50;H01T21/06 |
主分类号 |
H01T21/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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