CN105119145B - A kind of spark plug and its production technology - Google Patents
A kind of spark plug and its production technology Download PDFInfo
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- CN105119145B CN105119145B CN201510510687.8A CN201510510687A CN105119145B CN 105119145 B CN105119145 B CN 105119145B CN 201510510687 A CN201510510687 A CN 201510510687A CN 105119145 B CN105119145 B CN 105119145B
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Abstract
A kind of spark plug production technology, comprises the following steps：Central electrode is inserted in the axis hole in insulator；Housing is fixed and is set in insulator surface；Measure the vertical range C between the front end face of the central electrode and the front end face of the housing；Grounding electrode is fixedly connected with the casing, the part of the grounding electrode is set to be projected on positioned at the front end face of the central electrode on the perspective plane T that the front end face of the housing is formed, and the minimum range X that the part of the grounding electrode and the central electrode are formed between the grounding electrode and central electrode is equal to the vertical range C using the size as ignition gap, ignition gap X.The present invention is by by the minimum range X between grounding electrode and central electrode, it is set to the vertical range C in the central electrode front end face and housing forward end face that can be convenient for measuring, it is vertical range C to ensure ignition gap, and then ignition gap accurately can be measured.
Description
Technical field
The present invention relates to a kind of igniter and its production technology, more particularly to a kind of spark plug and its production technology.
Background technology
In the prior art according to central electrode, insulator, housing, the position relationship of grounding electrode difference, spark plug
Structure type is also different, can be divided into the end of central electrode in housing and housing outside, and central electrode end exhausted
External with insulation in edge body, grounding electrode is so combined into a variety of spark plug configuration types in housing and outside housing.But it is existing
In technology more ripe production technology only for center electrode end be arranged on that insulation is external and housing outside, grounding electrode is also provided with
A kind of spark plug configuration outside housing.
Above-mentioned traditional spark plug production technology is：In the axis hole that central electrode is loaded to insulator, before central electrode
End is arranged on insulator exterior, and glass-sealing agent is filled into axis hole, then screw rod is inserted into axis hole, and spark plug is integrally put into
Stove high temperature sintering, in this way, the relative position of central electrode and insulator is fixed.Housing is set in the external progress riveting of insulation again
Connect, the ignition gap then carried out to spark plug between grounding electrode and central electrode is adjusted.Generally, by between one and default igniting
The pad of gap consistency of thickness is centrally disposed between electrode and grounding electrode, then the operation such as is bent, pressurizeed to grounding electrode,
It is close to central electrode, pad and grounding electrode three, finally extracts pad out, the distance between central electrode and grounding electrode
It is exactly default igniting spacing.But this production technology is only applicable to all exposed situation of central electrode and grounding electrode,
Once central electrode is in housing, just ignition gap can not be adjusted with common method.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of spark plug production technology, it can be to central electrode
The igniting spacing for being arranged on the spark plug of enclosure interior is accurately measured, improves the outgoing of spark plug, improves internal combustion engine
Operation stability.
To achieve these goals, this invention takes technical scheme in detail below：
A kind of spark plug production technology, comprises the following steps：
A. central electrode is inserted in the axis hole in insulator；
B. sealant is filled into the axis hole of the insulator；
C. screw rod is inserted in the axis hole of the insulator；
D. high temperature sintering insulator, makes one end and the screw rod end thereof contacts of central electrode, and the central electrode and insulation
Body is fixed；
E. housing is fixed and is set in insulator surface, make the leading section of the insulator and the front end of the central electrode
Portion is respectively positioned in the housing；
F. the vertical range C between the front end face of the central electrode and the front end face of the housing is measured；
G. grounding electrode is fixedly connected with the casing, the part of the grounding electrode is located at the front end of the central electrode
Face is projected on the perspective plane T that the front end face of the housing is formed, and makes part and the center of the grounding electrode
The minimum range X that electrode is formed between the grounding electrode and central electrode is using the size as ignition gap, ignition gap X
Equal to the vertical range C.
The spark plug production technology of the present invention, by the way that grounding electrode is fixedly connected with housing forward end face, and will ground connection electricity
Minimum range X between pole and central electrode, is set to hanging down for the central electrode front end face that can be convenient for measuring and housing forward end face
Directly apart from C, it is ensured that ignition gap is vertical range C, and then ignition gap accurately can be measured.
Further, in the step f, measure between the front end face of the central electrode and the front end face of the housing
Vertical range C, and product of the measurement distance outside pre-determined distance scope is rejected.
It is convenient to eliminate the product for not meeting default ignition distance or substandard product is carried out in spark plug production process
It is processed further processing, it is ensured that the precision of ignition gap, improves the outgoing of spark plug, the operation for improving internal combustion engine is steady
It is qualitative.
Further, grounding electrode fixation parallel with the front end face of the housing is close to.
Further, the front end face of the central electrode exposes to the leading section of insulator；Or before the central electrode
End face is located in insulator.
Further, the part that the grounding electrode is located at the perspective plane T is provided with raised or through hole.
Further, the grounding electrode is strip, and its at least one end is fixedly connected with the casing；Or the grounding electrode is
Annular shape, its cylindrical place and housing fixed seal connection.
The present invention also provides a kind of spark plug：
A kind of spark plug, including：
Insulator, it has the axis hole extended in the axial direction；
Central electrode, it inserts and runs through the axis hole of the insulator；
Housing, it is hollow columnar, and the housing is fixed and is set in the insulator surface；
Grounding electrode；
The front end face of the leading section of the insulator and the central electrode is respectively positioned in the housing；The grounding electrode
It is fixedly connected with the housing, the part of the grounding electrode is projected on the housing positioned at the front end face of the central electrode
The perspective plane T that is formed of front end face on, and the part of the grounding electrode and the central electrode is formed ground connection electricity
Minimum range X between pole and central electrode is equal to the vertical range using the size as ignition gap, ignition gap X
C。
Further, grounding electrode fixation parallel with the front end face of the housing is close to.
Further, the front end face of the central electrode exposes to the leading section of insulator or in the insulator.
Further, the grounding electrode is strip, and its at least one end is fixedly connected with the casing；Or the grounding electrode is
Annular shape, its cylindrical place and housing fixed seal connection.
In order to more fully understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Brief description of the drawings
Fig. 1 is the structure sectional view of the spark plug of the embodiment of the present invention one；
Fig. 2 is the upward view of the spark plug of the embodiment of the present invention one；
Fig. 3 is the partial sectional view of the spark plug of the embodiment of the present invention one；
Fig. 4 is the partial sectional view of the spark plug of the embodiment of the present invention two；
Fig. 5 is the part-structure sectional view of the spark plug of the embodiment of the present invention three；
Fig. 6 is the upward view of the spark plug of the embodiment of the present invention three；
Fig. 7 is the part-structure sectional view of the spark plug of the embodiment of the present invention four；
Fig. 8 is the upward view of the spark plug of the embodiment of the present invention four；
Fig. 9 is the upward view of the spark plug of the embodiment of the present invention five；
Figure 10 is the structure sectional view of the spark plug of the embodiment of the present invention six.
Embodiment
Embodiment one
Referring to Fig. 1 and Fig. 2, it is respectively the structure sectional view and upward view of the spark plug of the embodiment of the present invention one, and Fig. 1 is
A-A sectional view (Fig. 2 is not drawn into the place gap of glass-sealing agent 5) in Fig. 2, the embodiment of spark plug production technology of the invention
One spark plug produced includes housing 1, insulator 2, central electrode 3, grounding electrode 4, sealant 5 and screw rod 6.
The insulator 2 has the axis hole 22 extended in the axial direction, and central electrode 3 is inserted and through the axis hole 22.Center
The end that electrode 3 is closer to grounding electrode 4 is its leading section 31a, and leading section 31a protrudes from the insulator 2
Leading section, thus central electrode 3 front end face 31 be located at insulator 2 outside.The housing 1 is hollow columnar, and it is set in absolutely
The surface of edge body 2, makes the leading section of insulator 2 be arranged in housing 1, meanwhile, the front end face 31 of the central electrode 3 is located at the shell
In body 1, now the front end face of insulator 2 is not contacted with grounding electrode 4.In other implementations, the front end face of insulator 2
It can be contacted with grounding electrode 4.
Please refer to Fig. 3, it is the partial sectional view of the spark plug of the embodiment of the present invention one, the front end of the central electrode
The vertical range in face 31 and housing forward end face 11 is C, and the upright projection of front end face 31 of central electrode is formed in housing forward end face throws
Shadow face T.The grounding electrode 4 is bar shaped, and it is close to the parallel fixation in housing forward end face 11, and a part for grounding electrode 4, which is located at, throws
On the T of shadow face, the part that grounding electrode is located on the T of the perspective plane forms fixed range C with central electrode 3.Due to grounding electrode 4
The minimum range X between the grounding electrode and central electrode is formd between part and central electrode 3 on the T of perspective plane,
And then grounding electrode 4 is lighted a fire in this place with central electrode 3, form the ignition gap of fixed range, the size of the ignition gap
For vertical range C.
Based on the structure design of above-mentioned spark plug, can accurately it be measured between plug ignition the present invention further provides one kind
The production technology of the spark plug of gap, specifically includes following steps：
A. central electrode 3 is inserted in the axis hole 22 extended in the axial direction in insulator 2, and made before central electrode
End 31a exposes insulator 2；
B. glass-sealing agent 5 is filled into the axis hole 22 of insulator；
C. screw rod 6 is inserted in the axis hole 22 of insulator；
D. the insulator fixed through above-mentioned steps is subjected to high temperature sintering, melts the glass-sealing agent, Shi Gai centers
Electrode one end and screw rod end thereof contacts, and be fixed in insulator；
E. housing 1 is set in the surface of insulator 2 and fixation, the leading section 31a of central electrode is located at insulator exterior,
The front end face 31 of central electrode is set to expose to the leading section of insulator；
F. the distance between the front end face 31 of actual central electrode and the front end face 11 of housing are measured, if the distance with it is pre-
If ignition distance it is identical, then the spark plug is labeled as certified products, undesirable spark plug is rejected.
G. grounding electrode 4 is fixedly connected with housing 1, specifically, the parallel fixation of front end face 11 of grounding electrode 4 and housing
It is close to；Minimum range X between central electrode and grounding electrode is equal to vertical range C, and the part of grounding electrode is located at middle electrocardio
The front end face of pole is projected on the perspective plane T that the front end face of housing is formed, so that grounding electrode is formed with the central electrode
The ignition gap of fixed range, the size of the ignition gap is equal to vertical range C.
Now, due to the minimum range X between the front end face 31 and grounding electrode 4 of central electrode, it is equal to central electrode
Front end face 31 and housing forward end face 11 vertical range C.And vertical range C can be measured by simple instrument,
And then can be by measuring vertical range C, to learn the minimum range X between central electrode and grounding electrode, minimum range X
The as ignition gap of spark plug.By measuring vertical range C, housing can not be in central electrode in the prior art by overcoming
The technical problem that the ignition gap of interior spark plug is measured.
Furthermore, it is possible in the front end face 31 of grounding electrode and central electrode, just to place, (i.e. the grounding electrode is positioned at perspective plane T
On part) on raised (being not drawn into figure) is set, ignition distance now is less than normal, lights a fire rapider.
Embodiment two
Referring to Fig. 4, its partial sectional view for the spark plug of the embodiment of the present invention two.Embodiment two and embodiment three are big
Body phase is same, only following difference：Grounding electrode 4f is bending strip, and its bossing 4f1 is located on the T of perspective plane, and its is recessed
The minimum range X of part 4f2 and central electrode 3 is more than C, therefore grounding electrode 4f and central electrode 3 minimum range X-shaped Cheng Yu
Between grounding electrode 4f bossing and central electrode front end face 31, minimum range X is equal to vertical range C.
In other embodiments, grounding electrode 4 can also be other shapes, as long as grounding electrode 4 is located on the T of perspective plane
Part and the minimum range X that is formed between the grounding electrode and central electrode of the distance between central electrode 3, you can ensure ground connection
The ignition gap of electrode 4 and the formation fixed range of central electrode 3, the size of the ignition gap is equal to vertical range C.In Fig. 4,
Position represented by round dot, C is respectively less than with the distance of central electrode 3, only needs grounding electrode 4 (except on the T of perspective plane
Part) it is not in the round dot shaded side, you can ensure that the minimum range of grounding electrode 4 and central electrode 3 is formed at ground connection
Electrode is located between the part on the T of perspective plane and central electrode.In addition, the figure is plan, in practice, with central electrode distance
Position less than C forms a three-dimensional shape, and grounding electrode 4 (except the part on the T of perspective plane) only need to be located at the solid figure
Outside the space of shape.
Embodiment three
Referring to Fig. 5 and Fig. 6, Fig. 5 is the part-structure sectional view of spark plug, and Fig. 6 is the upward view of spark plug.The present invention's
Embodiment three and embodiment one are essentially identical, the difference is that only：Grounding electrode 4b is strip, its two ends respectively with housing
End face is connected, and its width is less than the diameter of central electrode.In this way, grounding electrode is parallel with the plane where housing end face, and
Spark can be discharged by the space of grounding electrode both sides after arcing.
Example IV
Referring to Fig. 7 and Fig. 8, Fig. 7 is the part-structure sectional view of spark plug, and Fig. 8 is the upward view of spark plug.The present invention's
Example IV and embodiment one are essentially identical, the difference is that only：Grounding electrode 4c is rectangular shape, and its width is more than middle electrocardio
The diameter of pole, is provided with through hole 4c1 thereon, and the through hole and central electrode 3 are coaxial, central electrode is produced arcing with grounding electrode
Afterwards, spark can be quick from through hole release.And through hole 4c1 diameter is less than the diameter of central electrode 3, makes grounding electrode 4c's
Part is located on the T of perspective plane.
Embodiment five
Referring to Fig. 9, it is the upward view of spark plug.Embodiments of the invention five and embodiment one are essentially identical, difference
Place is only that：Grounding electrode 4d cross section is annulus, and its cylindrical place is connected with housing end face, and its center is provided with through hole 4d1,
The through hole and central electrode 3 are coaxial, central electrode is produced with grounding electrode after arcing, and spark can be quick from through hole release.
And through hole 4d1 diameter is less than the diameter of central electrode 3, grounding electrode 4d part is set to be located on the T of perspective plane.
Embodiment six
Referring to Figure 10, it is the structure sectional view of spark plug.Embodiments of the invention six and embodiment one are essentially identical, no
It is only that with part：The leading section 31e of central electrode is located in insulator 2, the front end face of central electrode is located at insulator 2
It is interior.In the present embodiment, the operation principle of spark plug is identical with embodiment one, the formation of grounding electrode and central electrode 3 it is fixed away from
From ignition gap, the size of the ignition gap is located in insulator for vertical range C, i.e. central electrode 3 or insulation is external equal
The goal of the invention of the present invention can be realized.In addition, the setting of the shape size of grounding electrode can using above-described embodiment one to
Scheme in five.
The spark plug and its production technology of the present invention, by the way that grounding electrode is fixedly connected with housing forward end face, and will connect
Minimum range X between ground electrode and central electrode, is set to central electrode front end face and the housing forward end face that can be convenient for measuring
Vertical range C, it is ensured that ignition gap is vertical range C, and then ignition gap accurately can be measured.Further
Ground, it is convenient to eliminate the product for not meeting default ignition distance in spark plug production process, it is ensured that ignition gap it is accurate
Degree, improves the outgoing of spark plug, improves the operation stability of internal combustion engine.
The invention is not limited in above-mentioned embodiment, if the various changes or deformation to the present invention do not depart from the present invention
Spirit and scope, if these are changed and deformation belongs within the scope of the claim and equivalent technologies of the present invention, then this hair
It is bright to be also intended to comprising these changes and deform.
Claims (6)
1. a kind of spark plug production technology, it is characterised in that：Comprise the following steps：
A. central electrode is inserted in the axis hole in insulator；
B. sealant is filled into the axis hole of the insulator；
C. screw rod is inserted in the axis hole of the insulator；
D. high temperature sintering insulator, makes one end and the screw rod end thereof contacts of central electrode, and the central electrode is consolidated with insulator
It is fixed；
E. by housing fix be set in insulator surface, make the insulator leading section and the central electrode front end face it is equal
In the housing；
F. the vertical range C between the front end face of the central electrode and the front end face of the housing is measured；
G. grounding electrode is fixedly connected with the casing, the part of the grounding electrode is located at the front end face throwing of the central electrode
Shadow makes the part of the grounding electrode and the central electrode on the perspective plane T that the front end face of the housing is formed
The minimum range formed between the grounding electrode and central electrode is equal to institute using the size as ignition gap, the ignition gap
State vertical range C.
2. spark plug production technology according to claim 1, it is characterised in that：In the step f, the center is measured
Vertical range C between the front end face of the front end face of electrode and the housing, and by measurement distance outside pre-determined distance scope
Product reject.
3. spark plug production technology according to claim 1, it is characterised in that：Before the grounding electrode and the housing
The parallel fixation of end face is close to.
4. spark plug production technology according to claim 1, it is characterised in that：The front end face of the central electrode is exposed to
The leading section of insulator；Or the front end face of the central electrode is located in insulator.
5. spark plug production technology according to any one of claim 1 to 4, it is characterised in that：The grounding electrode position
Part at the perspective plane T is provided with raised or through hole.
6. spark plug production technology according to any one of claim 1 to 4, it is characterised in that：The grounding electrode is
Strip, its at least one end is fixedly connected with the casing；Or the grounding electrode is annular shape, its cylindrical place connects with housing fixing seal
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510510687.8A CN105119145B (en) | 2015-08-19 | 2015-08-19 | A kind of spark plug and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510510687.8A CN105119145B (en) | 2015-08-19 | 2015-08-19 | A kind of spark plug and its production technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105119145A CN105119145A (en) | 2015-12-02 |
| CN105119145B true CN105119145B (en) | 2017-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510510687.8A Active CN105119145B (en) | 2015-08-19 | 2015-08-19 | A kind of spark plug and its production technology |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3705921B2 (en) * | 1998-03-03 | 2005-10-12 | 日本特殊陶業株式会社 | Spark plug manufacturing equipment and spark plug manufacturing method |
| EP2139083B1 (en) * | 2007-03-26 | 2015-08-19 | Ngk Spark Plug Co., Ltd. | Spark plug |
| AT509313B1 (en) * | 2009-12-23 | 2011-12-15 | Ge Jenbacher Gmbh & Co Ohg | SPARK PLUG WITH HOLE TO ADJUST |
| US8770777B2 (en) * | 2010-10-01 | 2014-07-08 | Ngk Spark Plug Co., Ltd. | Spark plug |
| DE102011080356A1 (en) * | 2011-08-03 | 2013-02-07 | Robert Bosch Gmbh | spark plug |
| CN205070159U (en) * | 2015-08-19 | 2016-03-02 | 张蝶儿 | Spark plug |
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2015
- 2015-08-19 CN CN201510510687.8A patent/CN105119145B/en active Active
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| CN105119145A (en) | 2015-12-02 |
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