Title:
IGNITION COIL FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2016/031427
Kind Code:
A1
Abstract:
An ignition coil (1) for an internal combustion engine is provided with a primary coil (21), a secondary coil (22), a center core (5), an outer periphery core (6), a core cover (7), a case (11), and a filling resin (13). The core cover (7) is configured to cover the inner side surface (61) of the outer periphery core (6), the surface (62) on one end thereof in the penetration direction (L), and the surface (63) on the other end thereof in the penetration direction (L). A plurality of long grooves (76) are formed on all of the inner side surface, outer side surface, and one penetration-direction (L) surface of a wall portion (75) formed in the one-end-side cover part (72) of the core cover (7) at a position that is on the high-voltage side of the secondary coil (22) and faces the one surface (62) on the end of the outer periphery core (6) in the penetration direction (L). The interior of the long grooves (76) is filled with the filling resin (13) filling the interior of the case (11).
Inventors:
KAWAI KAZUHIDE (JP)
Application Number:
PCT/JP2015/070599
Publication Date:
March 03, 2016
Filing Date:
July 17, 2015
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H01F38/12
Foreign References:
| JP2006278380A | 2006-10-12 | |||
| JP2007194364A | 2007-08-02 | |||
| JP2008124357A | 2008-05-29 | |||
| JP2012248645A | 2012-12-13 | |||
| JP2013065743A | 2013-04-11 | |||
| JP2013026560A | 2013-02-04 |
Attorney, Agent or Firm:
KIKUCHI, YASUHIRO (JP)
Yasuhiro Kikuchi (JP)
Yasuhiro Kikuchi (JP)
Download PDF: