Title:
GLOW PLUG
Document Type and Number:
Japanese Patent JP2019124367
Kind Code:
A
Abstract:
To provide a glow plug capable of maintaining high conductivity between a cathode and a holding outer cylinder, and capable of maintaining high bond strength between the holding outer cylinder and a ceramic heater.SOLUTION: A glow plug 1 comprises a ceramic heater 3 and a holding outer cylinder 2A. A base end part with an anode 33 arranged in the ceramic heater 3 projects from the holding outer cylinder 2A to a base end side L2. In an axis direction L along center axes of the ceramic heater 3 and holding outer cylinder 2A, a base end 342 of a cathode 34 is positioned on a tip side L1 with respect to a base end 271 of an inclined contact part 27 of the holding outer cylinder 2A. A first distance D1 from the base end 271 of the inclined contact part 27 to the base end 342 of the cathode 34 in the axis direction L is equal to or more than 2 mm.SELECTED DRAWING: Figure 2
Inventors:
NAKAO YASUSHI
MURAI HIROYUKI
MURAI HIROYUKI
Application Number:
JP2018002969A
Publication Date:
July 25, 2019
Filing Date:
January 11, 2018
Export Citation:
Assignee:
DENSO CORP
International Classes:
F23Q7/00
Domestic Patent References:
| JP2017091854A | 2017-05-25 |
Foreign References:
| WO2014083913A1 | 2014-06-05 | |||
| WO2015163112A1 | 2015-10-29 | |||
| WO2016080105A1 | 2016-05-26 |
Attorney, Agent or Firm:
Patent Business Corporation Aichi International Patent Office