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Title:
SPARK PLUG
Document Type and Number:
WIPO Patent Application WO/2015/099081
Kind Code:
A1
Abstract:
 A connecting part for connecting a terminal fitting and a center electrode within a through-hole of an insulator has a resistor, and a magnetic body structure that includes a magnetic body and an electrical conductor which are situated at a location away from the resistor, to the front end side or rear end side of the resistor. Of the resistor and the magnetic body structure, the member situated at the front end side is designated as a first member, and the member situated at the rear end side is designated as a second member. The connecting part further has a first electrically conductive seal part, a second electrically conductive seal part, and a third electrically conductive seal part. The first electrically conductive seal part is situated at the front end side of the first member, and is in contact with the first member. The second electrically conductive seal part is situated between the first member and the second member, and is in contact with the first member and the second member. The third electrically conductive seal part is situated to the rear end side of the second member, and is in contact with the second member. Alternatively, the resistor and the seal parts may be omitted, and the connecting part may include a magnetic body structure that includes a magnetic body and an electrical conductor.

Inventors:
TAKAOKA, Katsuya (C/O NGK SPARK PLUG CO. LTD, 14-18,Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
KUROSAWA, Kazuhiro (C/O NGK SPARK PLUG CO. LTD, 14-18,Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
TANAKA, Kuniharu (C/O NGK SPARK PLUG CO. LTD, 14-18,Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
HONDA, Toshitaka (C/O NGK SPARK PLUG CO. LTD, 14-18,Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
KURONO, Hirokazu (C/O NGK SPARK PLUG CO. LTD, 14-18,Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
YOSHIDA, Haruki (C/O NGK SPARK PLUG CO. LTD, 14-18,Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
UEGAKI, Hironori (C/O NGK SPARK PLUG CO. LTD, 14-18,Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
Application Number:
JP2014/084392
Publication Date:
July 02, 2015
Filing Date:
December 25, 2014
Export Citation:
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Assignee:
NGK SPARK PLUG CO., LTD. (14-18, Takatsuji-cho Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
International Classes:
H01T13/20
Foreign References:
JPS54151737A1979-11-29
JPS349209B
JPS56172914U1981-12-21
JPS61230281A1986-10-14
JPS523944A1977-01-12
JPS52125946A1977-10-22
JPS52125947A1977-10-22
JPS61284903A1986-12-15
JPH02284374A1990-11-21
JPS62150681A1987-07-04
JPS61230281A1986-10-14
JPS54151736A1979-11-29
JPS61135079A1986-06-23
JPS61104580A1986-05-22
JPS61208768A1986-09-17
Other References:
See also references of EP 3089291A4
Attorney, Agent or Firm:
TOKKYO GYOMUHOJIN OHTORI INTERNATIONAL PATENT FIRM (Marunouchi Annex Bldg. 8th floor, 18-10 Marunouchi 2-chome, Naka-ku, Nagoya-sh, Aichi 02, 〒4600002, JP)
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