公开(公告)号：US20160079739A1

公开(公告)日：2016-03-17

申请号：US14839022

申请日：2015-08-28

Applicant: NGK Spark Plug Co., LTD.

Inventor： Koji OKAZAKI ,  Kei TAKAHASHI ,  Kazuhiko MORI

IPC: H01T13/20 ,  H01T13/08

CPC classification number: H01T13/20 ,  H01T13/08 ,  H01T13/467 ,  H01T13/54

Abstract: A spark plug includes: a metallic shell having a through hole extending in a direction of an axis; a cap covering an opening in the metallic shell; a melt portion formed between the cap and the metallic shell to join the cap and the metallic shell to each other; and a gap extending from a specific space which is surrounded by the metallic shell and the cap to the melt portion and interposed between the metallic shell and the cap.

Abstract translation: 火花塞包括：金属壳，具有沿轴线方向延伸的通孔; 覆盖金属壳体中的开口的盖子; 形成在所述盖和所述金属壳之间以将所述盖和所述金属壳彼此接合的熔体部分; 以及从金属壳和盖被包围的特定空间延伸到熔融部分并且插入在金属壳和盖之间的间隙。