EP1026447A3 - Glow plug - Google Patents

Glow plug Download PDF

Info

Publication number
EP1026447A3
EP1026447A3 EP99310206A EP99310206A EP1026447A3 EP 1026447 A3 EP1026447 A3 EP 1026447A3 EP 99310206 A EP99310206 A EP 99310206A EP 99310206 A EP99310206 A EP 99310206A EP 1026447 A3 EP1026447 A3 EP 1026447A3
Authority
EP
European Patent Office
Prior art keywords
tightening portion
glow plug
circumferential surface
outer circumferential
shape corresponding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99310206A
Other languages
German (de)
French (fr)
Other versions
EP1026447B1 (en
EP1026447A2 (en
Inventor
Mitsutaka C/O Ngk Spark Plug Co. Ltd. Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Niterra Co Ltd
Original Assignee
NGK Spark Plug Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NGK Spark Plug Co Ltd filed Critical NGK Spark Plug Co Ltd
Publication of EP1026447A2 publication Critical patent/EP1026447A2/en
Publication of EP1026447A3 publication Critical patent/EP1026447A3/en
Application granted granted Critical
Publication of EP1026447B1 publication Critical patent/EP1026447B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spark Plugs (AREA)
  • Resistance Heating (AREA)

Abstract

The metallic shell (20) of a glow plug has a cylindrical male-threaded portion (21) and a tightening portion (22). The tightening portion (22) is formed to have an outer circumferential surface of a shape corresponding to that of a 12-point nut. By virtue of this structure, the tightening portion (22) can have a greater wall thickness as compared with a conventional tightening portion which has a an outer circumferential surface of a shape corresponding to that of a hexagon nut. Therefore, it becomes possible to made the glow plug thinner, while maintaining the strength of the tightening portion (22).
Figure 00000001
EP99310206A 1999-02-04 1999-12-16 Glow plug Expired - Lifetime EP1026447B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2699499 1999-02-04
JP02699499A JP4128295B2 (en) 1999-02-04 1999-02-04 Glow plug

Publications (3)

Publication Number Publication Date
EP1026447A2 EP1026447A2 (en) 2000-08-09
EP1026447A3 true EP1026447A3 (en) 2004-08-25
EP1026447B1 EP1026447B1 (en) 2007-11-14

Family

ID=12208724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99310206A Expired - Lifetime EP1026447B1 (en) 1999-02-04 1999-12-16 Glow plug

Country Status (4)

Country Link
EP (1) EP1026447B1 (en)
JP (1) JP4128295B2 (en)
KR (1) KR100678292B1 (en)
DE (1) DE69937539T2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5922946B2 (en) * 2012-02-22 2016-05-24 日本特殊陶業株式会社 Glow plug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1402935A (en) * 1971-10-21 1975-08-13 Bosch Gmbh Robert Glow pin plugs
GB2179397A (en) * 1985-08-24 1987-03-04 Ford Motor Co Spark plug
EP0785396A1 (en) * 1995-12-28 1997-07-23 Ngk Spark Plug Co., Ltd A sheathed heater and a temperature self-regulating type glow plug
EP0798515A2 (en) * 1996-03-29 1997-10-01 Cooper Industries Italia S.p.A. Incandescent heater plug, particularly for diesel engines
DE19636537A1 (en) * 1996-09-09 1998-03-12 Bosch Gmbh Robert Spark plug for internal combustion engines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3039819B2 (en) * 1992-01-10 2000-05-08 株式会社デンソー Glow plug
JP3796905B2 (en) * 1997-05-14 2006-07-12 株式会社デンソー Glow plug

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1402935A (en) * 1971-10-21 1975-08-13 Bosch Gmbh Robert Glow pin plugs
GB2179397A (en) * 1985-08-24 1987-03-04 Ford Motor Co Spark plug
EP0785396A1 (en) * 1995-12-28 1997-07-23 Ngk Spark Plug Co., Ltd A sheathed heater and a temperature self-regulating type glow plug
EP0798515A2 (en) * 1996-03-29 1997-10-01 Cooper Industries Italia S.p.A. Incandescent heater plug, particularly for diesel engines
DE19636537A1 (en) * 1996-09-09 1998-03-12 Bosch Gmbh Robert Spark plug for internal combustion engines

Also Published As

Publication number Publication date
DE69937539T2 (en) 2008-09-18
EP1026447B1 (en) 2007-11-14
KR100678292B1 (en) 2007-02-01
KR20000057030A (en) 2000-09-15
DE69937539D1 (en) 2007-12-27
EP1026447A2 (en) 2000-08-09
JP4128295B2 (en) 2008-07-30
JP2000227220A (en) 2000-08-15

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