JPS5758017A - Sheathed glow plug - Google Patents

Sheathed glow plug

Info

Publication number
JPS5758017A
JPS5758017A JP13187580A JP13187580A JPS5758017A JP S5758017 A JPS5758017 A JP S5758017A JP 13187580 A JP13187580 A JP 13187580A JP 13187580 A JP13187580 A JP 13187580A JP S5758017 A JPS5758017 A JP S5758017A
Authority
JP
Japan
Prior art keywords
heating element
insulator
coiled heating
metal tubing
magnesia powder
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.)
Pending
Application number
JP13187580A
Other languages
Japanese (ja)
Inventor
Shinichi Yokoi
Tsuneo Ito
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.)
Nippon Tokushu Togyo KK
Niterra Co Ltd
Original Assignee
NGK Spark Plug Co Ltd
Nippon Tokushu Togyo KK
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, Nippon Tokushu Togyo KK filed Critical NGK Spark Plug Co Ltd
Priority to JP13187580A priority Critical patent/JPS5758017A/en
Publication of JPS5758017A publication Critical patent/JPS5758017A/en
Pending legal-status Critical Current

Links

Classifications

    • 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)

Abstract

PURPOSE:To maintain the powder density of insulator uniformly throughout the inside and outside of a coiled heating element in order to improve the durability of the heating element by a method wherein gaps do not be produced at the inside of the coiled heating element and at the bottom of a metal tubing even at the axially extended state after the swaging. CONSTITUTION:Electrical insulating material consisting of magnesia powder and the like are filled among the metal tubing 1, the coiled heating element 2 and an electrode shaft 13 as the insulator 5 for the prevention of the shorts between the element 2 and the tubing 1 or the electrode shaft 13. The metal tubing 1 housed said element 2 said shaft 13 and said insulator 5 therewithin is subjected to the swaging so as to be formed by radially compressing. Where, a bar insulator 12 housed inside the coiled heating element 2 is the sintered magnesia powder which is composed by sintering the previously moulded electrically molten magnesia powder set with binder at the predetermined temperature and hardening with the evaporation of the binder and rendered to have the compressive strength of the order of 2-8Kg/mm.<2> by adjusting the temperature and time for sintering.
JP13187580A 1980-09-23 1980-09-23 Sheathed glow plug Pending JPS5758017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13187580A JPS5758017A (en) 1980-09-23 1980-09-23 Sheathed glow plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13187580A JPS5758017A (en) 1980-09-23 1980-09-23 Sheathed glow plug

Publications (1)

Publication Number Publication Date
JPS5758017A true JPS5758017A (en) 1982-04-07

Family

ID=15068175

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13187580A Pending JPS5758017A (en) 1980-09-23 1980-09-23 Sheathed glow plug

Country Status (1)

Country Link
JP (1) JPS5758017A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118921A (en) * 1990-04-16 1992-06-02 Jidosha Kiki Co., Ltd. Metallic sheath heater with improved electrical connection between coil and sheath and method of manufacture thereof
EP1471307A1 (en) * 2003-04-23 2004-10-27 Ngk Spark Plug Co., Ltd Glow plug
JP2008261577A (en) * 2007-04-13 2008-10-30 Ngk Spark Plug Co Ltd Glow plug and its manufacturing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118921A (en) * 1990-04-16 1992-06-02 Jidosha Kiki Co., Ltd. Metallic sheath heater with improved electrical connection between coil and sheath and method of manufacture thereof
EP1471307A1 (en) * 2003-04-23 2004-10-27 Ngk Spark Plug Co., Ltd Glow plug
JP2008261577A (en) * 2007-04-13 2008-10-30 Ngk Spark Plug Co Ltd Glow plug and its manufacturing method

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