Title:
A glow plug and a manufacturing method for the same
Document Type and Number:
Japanese Patent JP5965182
Kind Code:
B2
Abstract:
Disclosed is a glow plug capable of, even when a housing of the glow plug is made relatively thin, more assuredly preventing deformation of front and rear body portions of the housing. A glow plug 1 has a housing 2 formed with a thread portion 5 and a tool engagement portion 6 and a heater 3. The housing 2 includes a press contact portion 7 brought into press contact with a plug seat surface of an internal combustion engine upon screwing the thread portion 5 into a mounting hole of the internal combustion engine, a front body portion 9 located between the press contact portion 7 and the thread portion 5 and a rear body portion ´ located between the tool engagement portion 6 and the thread portion 5. At least one of the front body portion 9 and the rear body portion 8 has a thickness smaller than or equal to a predetermined value and includes a plurality of reinforcing parts 9A, 8 A provided intermittently in a circumferential direction of the housing 2 in the form of protrusions or recesses extending in the direction of an axis CL1.
Inventors:
Kazutaka Eguchi
Hidei Ishii
Hidei Ishii
Application Number:
JP2012075297A
Publication Date:
August 03, 2016
Filing Date:
March 29, 2012
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
F23Q7/00
Domestic Patent References:
| JP2002174423A | ||||
| JP2002303424A | ||||
| JP2010249354A | ||||
| JP6431361U |
Attorney, Agent or Firm:
Mitsuo Kawaguchi