CN2845246Y - Improved accentric spark plug - Google Patents

Improved accentric spark plug Download PDF

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Publication number
CN2845246Y
CN2845246Y CN 200520097290 CN200520097290U CN2845246Y CN 2845246 Y CN2845246 Y CN 2845246Y CN 200520097290 CN200520097290 CN 200520097290 CN 200520097290 U CN200520097290 U CN 200520097290U CN 2845246 Y CN2845246 Y CN 2845246Y
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CN
China
Prior art keywords
spark plug
central electrode
eccentric
porcelain insulator
metal shell
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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.)
Expired - Fee Related
Application number
CN 200520097290
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Chinese (zh)
Inventor
罗世乾
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Individual
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Individual
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Priority to CN 200520097290 priority Critical patent/CN2845246Y/en
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Publication of CN2845246Y publication Critical patent/CN2845246Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an improved novel eccentric spark plug. On the basis of the existing spark plug, a portion of an outer screw thread at the front end of a metal casing of the spark plug is shaved, which leads a porcelain insulating body of a central electrode to be higher than the front end surface of the metal casing and be convex out of the front end surface of the metal casing. The opposite portions of the central electrode, the porcelain insulating body and the side electrode of the metal casing are processed into eccentric cross sections, and an eccentric distance is formed. A gap between the porcelain insulating body of the central electrode and the metal casing has a sufficient insulation distance, which leads the eccentric spark plug not to accumulate carbon and the phenomena of short circuit and electricity escape to be avoided. The eccentric spark plug has the advantages that carbon is not accumulated, the phenomena of short circuit and electricity escape are avoided, the ignition effect is good, the utilization rate of fuel oil is high, the usage period is long, the environment pollution is reduced, and the manufacturing cost is low.

Description

A kind of improved novel eccentric spark plug
Technical field:
The utility model relates to engine ignitor, specifically is a kind of improved novel eccentric spark plug.
Background technology:
No matter at present common is the spark plug that automobile or motorcycle are used, be divided into from structure: standard type is that central electrode spark plug porcelain insulator front end is equal with the metal shell end face of overcoat, short seat type is that central electrode spark plug porcelain insulator front end is lower than the metal shell end face, and the dimpling removing from mould is that central electrode spark plug porcelain insulator front end dimpling goes out the metal shell end face; Limit electrode by the metal housing can be divided into again: monolateral electrode, edged electrode, three limit electrodes and comprehensive electrode, and the spark plug of finding patent applied for from network, all there is the difficult again eliminating of the easy carbon deposit in space between central electrode spark plug porcelain insulator and the metal shell, cause cold run by carbon deposit short circuit leakage of electricity, reduce the shortcoming of spark plug operating period.The purpose of this utility model, just provide a kind of can overcome above-mentioned shortcoming, not carbon deposit, carbon deposit easily get rid of, light a fire effective, long-lived novel eccentric spark plug.
Summary of the invention:
The purpose of this utility model is achieved in that spark plug is mainly by the limit electrode, central electrode, spark plug porcelain insulator, metal shell, the conductive heat insulation material, the central electrode lead-in wire is formed, on this basis, with the outer rib-loop of the metal shell front end part of pruning, the high metal shell that protrudes of central electrode spark plug porcelain insulator front end, the spark plug porcelain insulator front end is whittled into eccentric cross section, limit electrode facing to metal shell, and maintain certain thickness spark plug porcelain insulator parcel central electrode, the high protrusion of central electrode front end spark plug porcelain insulator is sentenced down and is whittled into eccentric cross section, the eccentric cross section of spark plug porcelain insulator is dorsad put into metal shell and is constituted.
Description of drawings:
Fig. 1 is the utility model vertical section structure schematic diagram, among the figure: 1, limit electrode, 2, central electrode, 2 ', central electrode eccentric cross section, 3, spark plug porcelain insulator, 3 ', the spark plug porcelain insulator eccentric cross section, 4, metal shell, 5, the conductive heat insulation material, 6, the central electrode lead-in wire.
Embodiment:
Below in conjunction with drawings and Examples realization the utility model is described further:
Referring to Fig. 1, this novel eccentric spark plug is by limit electrode 1, central electrode 2, spark plug porcelain insulator 3, metal shell 4, conductive heat insulation material 5, central electrode lead-in wire 6 is formed, its major technique feature is that the outer rib-loop of metal shell 4 front ends is pruned at least more than the 0.2cm, make central electrode 2, the spark plug porcelain insulator 3 high metal shells 4 that protrude, spark plug porcelain insulator 3 front ends are pruned more than 1/4 by its diameter at least, the length of pruning is processed into eccentric cross section 3 ' at least more than the 0.2cm, and maintain the spark plug porcelain insulator parcel central electrode 2 of the above thickness of 0.09cm at least, spark plug porcelain insulator eccentric cross section 3 ' is contained in the metal shell 4 facing to the limit electrode 1 of metal shell, the high spark plug porcelain insulator 3 above place of 0.2cm at least of protruding of central electrode 2 front ends, prune more than at least 1/2 by diameter along its following length, be processed into eccentric cross section 2 ', central electrode eccentric cross section 2 ' spark plug porcelain insulator eccentric cross section 3 ' is dorsad put in the metal shell 4, and central electrode 2 connects central electrode lead-in wire 6 by conductive heat insulation material 5 and constitutes in metal shell 4.
Embodiment is as shown in Figure 1: cut the outer rib-loop of metal shell 4 front ends of spark plug low, central electrode 2, the high metal shell 4 that protrudes of spark plug porcelain insulator 3 front ends, enough insulation distances are caused in the space between the limit electrode 1 of spark plug porcelain insulator eccentric cross section 3 ' and metal shell, guarantee that spark plug can the short circuit leakage of electricity, be difficult for carbon deposit, carbon deposit is also washed away eliminating by high pressure combustion mixture stream easily, thus reach be difficult for carbon deposit, can not the short circuit leakage of electricity purpose.The utility model is than the advantage of existing spark plug: not carbon deposit, can not the short circuit leakage of electricity, igniting is effective, the fuel utilization ratio height, long service life reduces environmental pollution, has remarkable economical and social benefit.

Claims (4)

1. improved novel eccentric spark plug, by limit electrode (1), central electrode (2), spark plug porcelain insulator (3), metal shell (4), conductive heat insulation material (5), central electrode lead-in wire (6) is formed, it is characterized in that the outer rib-loop of metal shell (4) the front end part of pruning, make central electrode (2), high metal shell (4) front end face that protrudes of spark plug porcelain insulator (3), spark plug porcelain insulator (3) front end is processed into eccentric cross section (3 '), limit electrode (1) facing to metal shell, and maintain certain thickness spark plug porcelain insulator parcel central electrode (2), the high protrusion of central electrode (2) spark plug porcelain insulator (3) front end face is sentenced down and is processed into eccentric cross section (2 '), and spark plug porcelain insulator eccentric cross section (3 ') is put in the metal shell (4) dorsad, connects central electrode lead-in wire (6) by conductive heat insulation material (5) and constitutes.
2. improved novel eccentric spark plug as claimed in claim 1 is characterized in that high metal shell (4) the front end face 0.2cm at least that protrudes of central electrode (2) and spark plug porcelain insulator (3).
3. improved novel eccentric spark plug as claimed in claim 1 is characterized in that having the 0.09cm distance at least between the eccentric cross section (3 ') of spark plug porcelain insulator (3) and central electrode (2).
4. improved novel eccentric spark plug as claimed in claim 1 is characterized in that at central electrode (2) being that a cross section is bordering on semicircular semicylinder by the position of spark plug porcelain insulator (3) parcel.
CN 200520097290 2005-07-22 2005-07-22 Improved accentric spark plug Expired - Fee Related CN2845246Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520097290 CN2845246Y (en) 2005-07-22 2005-07-22 Improved accentric spark plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520097290 CN2845246Y (en) 2005-07-22 2005-07-22 Improved accentric spark plug

Publications (1)

Publication Number Publication Date
CN2845246Y true CN2845246Y (en) 2006-12-06

Family

ID=37487188

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520097290 Expired - Fee Related CN2845246Y (en) 2005-07-22 2005-07-22 Improved accentric spark plug

Country Status (1)

Country Link
CN (1) CN2845246Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101944707A (en) * 2009-07-06 2011-01-12 日本特殊陶业株式会社 Spark plug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101944707A (en) * 2009-07-06 2011-01-12 日本特殊陶业株式会社 Spark plug
CN101944707B (en) * 2009-07-06 2013-03-27 日本特殊陶业株式会社 Spark plug

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee