CN103457161A - Flat side electrode of sparking plug and manufacturing method thereof - Google Patents
Flat side electrode of sparking plug and manufacturing method thereof Download PDFInfo
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- CN103457161A CN103457161A CN2013103457438A CN201310345743A CN103457161A CN 103457161 A CN103457161 A CN 103457161A CN 2013103457438 A CN2013103457438 A CN 2013103457438A CN 201310345743 A CN201310345743 A CN 201310345743A CN 103457161 A CN103457161 A CN 103457161A
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Abstract
A flat side electrode of the sparking plug comprises a side electrode body, wherein the side electrode body comprises a connecting section and a bending section which are formed integrally, the connecting section is welded to a metal shell of the sparking plug, and the bending section is bent relative to the connecting section to a position corresponding to the axial extending direction of a center electrode of the sparking plug. The connecting section and the bending section are both of flat shapes, the relatively wide side face of the bending section is parallel with the center axis of the center electrode of the sparking plug and vertical to the relatively wide side face on the connecting section, the relatively wide side face of the flat connecting section corresponds to the axis surface of the center electrode of the sparking plug, and a relatively narrow side face on the flat bending section corresponds to the axial end face of the center electrode of the sparking plug.
Description
Technical field
The present invention relates to the spark plug technology field, refer to especially a kind of flat lateral electrode and manufacture method thereof of spark plug.
Background technology
Spark plug be a kind of be the equipment of gasoline engine cylinder firings, its operation principle is pulsed high-voltage discharge breakdown central electrode by high-voltage conducting wires is sent here and the air between lateral electrode, produces electric spark with the mist in this cylinder that ignites.
In fact, the voltage of supplying with spark plug except ignition system has a certain impact to the ignition intensity of spark plug, the material of the length in the electric spark intensity that spark plug produces at ignition point and spark plug useful life and the design and use of central electrode and spark-plug side electrode and sparking-plug electrode contactless ignition has substantial connection.And, due to the character of internal combustion engine itself, central electrode and the spark-plug side electrode of spark plug front end all are exposed in combustion chamber.Therefore the high temperature under many extreme cases in combustion chamber, the high-voltage arc that electric spark produces and various corrosive combustion gases, all to the central electrode of spark plug and the contactless ignition of spark-plug side electrode, cause corrosion to consume, thereby cause the ignition gap of spark plug to increase, ignition effectiveness reduces, spark plug shortening in useful life.
And wherein hold most flimsy or lateral electrode, and the lateral electrode part is all to become hook type by flat alloy material to curving mostly, because this spark-plug side electrode is flat, so electromotive force is concentrated not; Separately, when connect lateral electrode and the gap of central electrode between while producing electric spark, the contact area of plane spark-plug side electrode and flame core is large, therefore will absorb and take away the heat of a part of spark, can cause the short stay of lighting a fire when serious, thereby can make igniting section temperature and the energy of spark plug decrease, also corresponding reduction of engine output power thus; Lateral electrode and the gap of central electrode between when producing electric spark and lighting mist, flame core can be to the surrounding radiation, and then can impact the medial surface of the hook-shaped lateral electrode of Curved Flat, can cause the ignition gap increase between referring to lateral electrode of the central electrode of spark plug after long-time, and flat lateral electrode also can hinder electric spark and light mist to the diffusion of the one side at lateral electrode place, affect electric fiery efficiency.
Producer is also arranged when producing spark plug, done the cone incision technology in order to increase the electric field strength of concentrating lateral electrode and processed, but due to the limitation of the crotch place structure of the spark-plug side electrode of its flat.Cause cone to cut length and be generally between 1.5mm to 3.0mm, the area of cutting is less, the contact area of spark-plug side electrode and flame core is still larger, can not effectively solve the antiinflammation of spark-plug side electrode, and cone is cut the mechanical strength that can reduce lateral electrode, its shock proof ability is reduced, more easily distortion.
Summary of the invention
The object of the present invention is to provide a kind of flat lateral electrode and manufacture method thereof of spark plug, its technical problem underlying to be solved is: traditional lateral electrode part all is designed to become hook type by the alloy of flat pattern to curving mostly, this spark-plug side electrode is flat, so electromotive force is concentrated not; Separately, when connect lateral electrode and the gap of central electrode between while producing electric spark, the contact area of plane spark-plug side electrode and flame core is large, can absorb the heat of a part of spark, thereby can make igniting section temperature and the energy of spark plug decrease; And flame core impacts the medial surface of the hook-shaped lateral electrode of Curved Flat to surrounding radiation meeting, can cause the central electrode of spark plug and the lateral electrode ignition gap between referring to increase, and flat lateral electrode also can hinder electric spark and light mist to the diffusion of the one side at lateral electrode place, affect electric fiery efficiency.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The invention provides a kind of flat lateral electrode of spark plug, it comprises:
The lateral electrode body, described lateral electrode body comprises integrated linkage section and bending segment, described linkage section is welded on the metal shell of spark plug, and the relatively described linkage section of described bending segment is bent to the position corresponding with the axially extended direction of central electrode
Wherein, described linkage section and bending segment all are flat, and, on described bending segment the central axes of relatively wide side and described central electrode and with described linkage section on relatively wide lateral vertical, the axial plane of the relatively wide corresponding central electrode in a side on flat described linkage section, on flat described bending segment, a side of relative narrower is over against the axial end of answering described central electrode.
Be preferable over: form between the described linkage section of described lateral electrode body and bending segment and have crooked changeover portion, the cross section of the changeover portion of described bending is consistent along crooked track gradual change to consistent with the cross section of described bending segment by the cross section with described linkage section.
Be preferable over: form between the described linkage section of described lateral electrode body and bending segment and have crooked changeover portion, by described linkage section, the curving to described central electrode place forms described changeover portion.
Be preferable over: form between the described linkage section of described lateral electrode body and bending segment and have crooked changeover portion, by described bending segment, the curving to described central electrode place forms described changeover portion.
Be preferable over: be welded with the lateral electrode contactless ignition on the side of the end face of corresponding described central electrode on described bending segment, described lateral electrode contactless ignition is cylinder, and described lateral electrode contactless ignition and described central electrode coaxially arrange, described lateral electrode contactless ignition is the noble metal material.
Be preferable over: on described bending segment, protruding arch the in the side of corresponding described central electrode axial end discharge tip, and described lateral electrode contactless ignition is welded on described discharge tip.
The invention provides a kind of manufacture method of flat lateral electrode of spark plug, its step is as follows:
The first step, be welded on the metal shell of spark plug an end of flat metal bar as the lateral electrode body, the same axial setting of described flat metal bar and spark plug, and make the axial plane of the corresponding central electrode in side relatively wide on described flat metal bar;
Second step, to the end welded mutually with the metal-back of spark plug on the flat metal bar, the corresponding other end adopts the mode of punching press or die forging to carry out plastotype, make to be become cross-shaped by the cross section of an end of plastotype with the axis projection of the cross section of the end be not stamped on the flat metal bar, former relatively wide side strikes out the side of relative narrower, while wherein adopting the punching press plastotype, the direction of punching press is to be pushed to centre by two sides of relative narrower on the flat metal bar;
The 3rd step, by the flat metal bar bending after the punching press plastotype, the upper side by the former relatively wide rammed relative narrower in side of a section of the plastotype that makes to be stamped is bent to over against the position of the central electrode end face of answering spark plug.
Be preferable over: the 3rd step, the first lateral electrode contactless ignition of welding noble metal material on the side of corresponding described central electrode on described flat metal bar is stamped a section of plastotype, and then by the flat metal bar bending after the punching press plastotype, make described lateral electrode contactless ignition over against the end face of answering described central electrode, and adjust the bending curvature of described flat metal bar, and then realize adjusting the ignition gap between described lateral electrode contactless ignition and described central electrode.
Be preferable over: the 3rd step, flat metal bar after bending is stamped on a section of plastotype over against the lateral electrode contactless ignition of welding noble metal material on the side of end face that should described central electrode, and adjust the bending curvature of described flat metal bar, and then realize adjusting the ignition gap between described lateral electrode contactless ignition and described central electrode.
Compared with prior art, the invention has the beneficial effects as follows:
One, flat lateral electrode of the present invention has reduced the area of the corresponding flame core of lateral electrode, has increased structural strength, reduced the situation of lateral electrode flame arrest, and method technique of the present invention is simple, can be widely used in suitability for industrialized production;
Two, reduced the area of the corresponding flame core of lateral electrode, and then effectively weakened electric flame core and lighted to the surrounding radiation situation that mixed gas impacts the medial surface of lateral electrode, can also make flame core wider to the angular range of surrounding radiation, be unlikely to be stopped by lateral electrode;
Three, make the face of the corresponding central electrode of lateral electrode less, realize point discharge, increased concentrated electromotive force, and can reduce the required voltage of increase electric field strength.
The accompanying drawing explanation
Figure l is perspective view of the present invention.
Fig. 2 is the embodiment schematic diagram that the present invention's bending on linkage section goes out changeover portion.
Fig. 3 is the embodiment schematic diagram that the present invention's bending on bending segment goes out changeover portion.
The lateral electrode body schematic diagram that Fig. 4 is not plastotype of the present invention.
Fig. 5 is the lateral electrode body schematic diagram after plastotype of the present invention.
The lateral electrode body embodiments schematic diagram that Fig. 6 is another kind of torsional deflection of the present invention.
Embodiment
The flat lateral electrode of a kind of spark plug the present invention proposed below with reference to accompanying drawing 1 to 6 and preferred embodiment and manufacture method thereof are done more to describe in detail.
As shown in Figures 1 to 3, the invention provides a kind of flat lateral electrode of spark plug, it comprises lateral electrode body 10 and lateral electrode contactless ignition 20, described lateral electrode body 10 comprises integrated linkage section 11 and bending segment 12, described linkage section 11 is welded on the metal shell 1 of spark plug, the relatively described linkage section 11 of described bending segment 12 is bent to the position corresponding with the axially extended direction of central electrode 2 of spark plug, wherein, described linkage section 11 and bending segment 12 all are flat, on described bending segment 12 central axes of relatively wide side and described central electrode 2 and with described linkage section 11 on relatively wide lateral vertical, the axial plane of the relatively wide corresponding central electrode 2 in a side on flat described linkage section 11, on flat described bending segment 12, a side of relative narrower is over against the axial end of answering described central electrode 2, be welded with lateral electrode contactless ignition 20 on the side of the end face of corresponding described central electrode 2 on described bending segment 12, described lateral electrode contactless ignition 20 is cylinder, and described lateral electrode contactless ignition 20 coaxially arranges with described central electrode 2, described lateral electrode contactless ignition 20 is the noble metal material.On described bending segment 12, protruding arch the in the side of corresponding described central electrode 2 axial ends discharge tip, and described lateral electrode contactless ignition 20 is welded on described discharge tip.
Preferred embodiment one: form between the described linkage section 11 of described lateral electrode body 10 and bending segment 12 and there is crooked changeover portion 13, wherein, as shown in Figure 1, the cross section of the changeover portion 13 of described bending is consistent along crooked track gradual change to consistent with the cross section of described bending segment 12 by the cross section with described linkage section 11; As shown in Figure 2, by described linkage section 11, the curving to described central electrode 2 places forms described changeover portion 13, and as shown in Figure 3, by described bending segment 12, the curving to described central electrode 2 places forms described changeover portion 13.As shown in Figure 4, described lateral electrode body 10 is to form on the metal shell 1 by flat metal bar one end being welded on to spark plug, make the same axial setting of described flat metal bar and spark plug, and make the relatively central electrode 2 of the corresponding spark plug of broad side surface of one of described flat metal bar, as shown in Figure 5, the corresponding other end of the end that described flat metal bar is welded mutually with the metal-back 1 of spark plug adopts the mode of punching press or die forging to carry out plastotype, make to be become cross-shaped by the cross section of an end of plastotype with the axis projection of the cross section of the end be not stamped on the flat metal bar, former relatively wide side strikes out the side of relative narrower, while wherein adopting the punching press plastotype, the direction of punching press is to be pushed to centre by two sides of relative narrower on the flat metal bar, as shown in Figure 1, by the flat metal bar bending after the punching press plastotype, the upper side by the former relatively wide rammed relative narrower in side of a section of plastotype of making to be stamped is bent to over against the position of central electrode 2 end faces of answering spark plug.
Preferred embodiment two: the first lateral electrode contactless ignition 20 of welding noble metal material on the side of corresponding described central electrode 2 on a section of plastotype that is stamped of the flat metal bar in above-described embodiment one, and then by the flat metal bar bending after the punching press plastotype, make described lateral electrode contactless ignition 20 over against the end face of answering described central electrode 2, and adjust the bending curvature of described flat metal bar, and then realize adjusting the ignition gap between described lateral electrode contactless ignition 20 and described central electrode 2.
Preferred embodiment three: in above-described embodiment one, flat metal bar after bending is stamped on a section of plastotype over against the lateral electrode contactless ignition 20 of welding noble metal material on the side of end face that should described central electrode 2, and adjust the bending curvature of described flat metal bar, and then realize adjusting the ignition gap between described lateral electrode contactless ignition 20 and described central electrode 2.
Preferred embodiment four: as shown in Figure 6, the relatively described linkage section 11 of described bending segment 12 circumferentially reverses 90 degree, the twisted shape that the described bending segment 12 of bending and linkage section 11 are bending relatively, as shown in Figure 4, on the metal shell that is welded on spark plug of wherein said lateral electrode body 10 by a flat metal bar, form, by on described flat metal bar and the same axial metal shell that is welded on spark plug 1 of spark plug, and make one of the described flat metal bar relatively central electrode 2 of the corresponding spark plug of broad side surface, as shown in Figure 6, another section corresponding to the end welded mutually with the metal-back 1 of described spark plug on the flat metal bar applies circumferential moment of torsion, make on described flat metal bar to bear one section circumferential torsional deflection that relative 90 degree occur around central shaft of moment of torsion, the side of bearing one section relative narrower of moment of torsion on described flat metal bar is reversed to corresponding with the central electrode of described spark plug, by the flat metal bar bending after torsional deflection, one section side of going up the relative narrower of corresponding described central electrode of torsional deflection is bent to over against the position of central electrode 2 end faces of answering spark plug.
Preferred embodiment five: as described in embodiment tetra-, the lateral electrode contactless ignition 20 of welding noble metal material on the side of the relative narrower of first one section described central electrode 2 of correspondence in the torsional deflection of described flat metal bar, and then will reverse the flat metal bar bending after modification, make described lateral electrode contactless ignition 20 over against the end face of answering described central electrode 2, and adjust the bending curvature of described flat metal bar, and then realize adjusting the ignition gap between described lateral electrode contactless ignition 20 and described central electrode 2.
Preferred embodiment six: as described in embodiment tetra-, on one section of flat metal bar torsional deflection after bending over against the lateral electrode contactless ignition 20 of welding noble metal material on the side of end face that should described central electrode 2, and adjust the bending curvature of described flat metal bar, and then realize adjusting the ignition gap between described lateral electrode contactless ignition 20 and central electrode 2.
Preferred embodiment eight: the width of described linkage section 11 is 2.8 millimeters, and the thickness of described bending segment 12 is 1.5 millimeters, and the diameter of described lateral electrode contactless ignition 20 is 1.5 millimeters.
Preferred embodiment nine: described lateral electrode body 10 is nickel or nickel alloy material, and described lateral electrode contactless ignition 20 is noble metal platinum or iridium or platinumiridio.
Comprehensive the above, technical scheme of the present invention can fully effectively complete the foregoing invention purpose, and structural principle of the present invention and the principle of work and power are all verified in an embodiment fully, and can reach effect and the purpose of expection, and embodiments of the invention also can be converted according to these principles, therefore, the present invention includes all and mention all replacement contents in scope in claim.Any equivalence of doing in the present patent application the scope of the claims changes, within all belonging to the scope of the claims of this case application.
Claims (9)
1. the flat lateral electrode of a spark plug, it is characterized in that comprising: the lateral electrode body, described lateral electrode body comprises integrated linkage section and bending segment, described linkage section is welded on the metal shell of spark plug, the relatively described linkage section of described bending segment is bent to the position corresponding with the axially extended direction of central electrode, wherein, described linkage section and bending segment all are flat, and, on described bending segment the central axes of relatively wide side and described central electrode and with described linkage section on relatively wide lateral vertical, the axial plane of the relatively wide corresponding central electrode in a side on flat described linkage section, on flat described bending segment, a side of relative narrower is over against the axial end of answering described central electrode.
2. the flat lateral electrode of a kind of spark plug as claimed in claim 1, it is characterized in that: form between the described linkage section of described lateral electrode body and bending segment and have crooked changeover portion, the cross section of the changeover portion of described bending is consistent along crooked track gradual change to consistent with the cross section of described bending segment by the cross section with described linkage section.
3. the flat lateral electrode of a kind of spark plug as claimed in claim 1, it is characterized in that: form between the described linkage section of described lateral electrode body and bending segment and have crooked changeover portion, by described linkage section, the curving to described central electrode place forms described changeover portion.
4. the flat lateral electrode of a kind of spark plug as claimed in claim 1, it is characterized in that: form between the described linkage section of described lateral electrode body and bending segment and have crooked changeover portion, by described bending segment, the curving to described central electrode place forms described changeover portion.
5. as the flat lateral electrode of the described a kind of spark plug of any one in claim 1 to 4, it is characterized in that: be welded with the lateral electrode contactless ignition on the side of the end face of corresponding described central electrode on described bending segment, described lateral electrode contactless ignition is cylinder, and described lateral electrode contactless ignition and described central electrode coaxially arrange, described lateral electrode contactless ignition is the noble metal material.
6. the flat lateral electrode of a kind of spark plug as claimed in claim 5, it is characterized in that: on described bending segment, protruding arch the in the side of corresponding described central electrode axial end discharge tip, and described lateral electrode contactless ignition is welded on described discharge tip.
7. the manufacture method of the flat lateral electrode of a spark plug, it is characterized in that step is as follows: the first step, one end of flat metal bar is welded on the metal shell of spark plug as the lateral electrode body, the same axial setting of described flat metal bar and spark plug, and make the axial plane of the corresponding central electrode in side relatively wide on described flat metal bar; Second step, to the end welded mutually with the metal-back of spark plug on the flat metal bar, the corresponding other end adopts the mode of punching press or die forging to carry out plastotype, make to be become cross-shaped by the cross section of an end of plastotype with the axis projection of the cross section of the end be not stamped on the flat metal bar, former relatively wide side strikes out the side of relative narrower; The 3rd step, by the flat metal bar bending after the punching press plastotype, the upper side by the former relatively wide rammed relative narrower in side of a section of the plastotype that makes to be stamped is bent to over against the position of the central electrode end face of answering spark plug.
8. the manufacture method of the flat lateral electrode of a kind of spark plug as claimed in claim 7, it is characterized in that: the 3rd step, the first lateral electrode contactless ignition of welding noble metal material on the side of corresponding described central electrode on described flat metal bar is stamped a section of plastotype, and then by the flat metal bar bending after the punching press plastotype, make described lateral electrode contactless ignition over against the end face of answering described central electrode, and adjust the bending curvature of described flat metal bar, and then realize adjusting the ignition gap between described lateral electrode contactless ignition and described central electrode.
9. the manufacture method of the flat lateral electrode of a kind of spark plug as claimed in claim 5, it is characterized in that: the 3rd step, flat metal bar after bending is stamped on a section of plastotype over against the lateral electrode contactless ignition of welding noble metal material on the side of end face that should described central electrode, and adjust the bending curvature of described flat metal bar, and then realize adjusting the ignition gap between described lateral electrode contactless ignition and described central electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103457438A CN103457161A (en) | 2013-08-09 | 2013-08-09 | Flat side electrode of sparking plug and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103457438A CN103457161A (en) | 2013-08-09 | 2013-08-09 | Flat side electrode of sparking plug and manufacturing method thereof |
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| CN103457161A true CN103457161A (en) | 2013-12-18 |
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| CN2013103457438A Pending CN103457161A (en) | 2013-08-09 | 2013-08-09 | Flat side electrode of sparking plug and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463664A (en) * | 2020-05-22 | 2020-07-28 | 杭州煜英智能科技有限公司 | Spark plug processing equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09129356A (en) * | 1995-11-02 | 1997-05-16 | Ngk Spark Plug Co Ltd | Spark plug for internal combustion engine |
| EP1276189A1 (en) * | 2000-02-16 | 2003-01-15 | Ngk Spark Plug Co., Ltd | Spark plug |
| JP2004134209A (en) * | 2002-10-10 | 2004-04-30 | Ngk Spark Plug Co Ltd | Spark plug and its manufacturing method |
| CN100362711C (en) * | 2001-01-31 | 2008-01-16 | 日本特殊陶业株式会社 | Mfg. method of spark plug and its mfg. appts. |
| CN201601385U (en) * | 2010-01-22 | 2010-10-06 | 梁建清 | Side electrode of spark plugs |
| CN102165655A (en) * | 2008-09-30 | 2011-08-24 | 日本特殊陶业株式会社 | Spark plug for internal combustion engine |
| CN203445411U (en) * | 2013-08-09 | 2014-02-19 | 株洲湘火炬火花塞有限责任公司 | Sparking plug flat side electrode |
-
2013
- 2013-08-09 CN CN2013103457438A patent/CN103457161A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09129356A (en) * | 1995-11-02 | 1997-05-16 | Ngk Spark Plug Co Ltd | Spark plug for internal combustion engine |
| EP1276189A1 (en) * | 2000-02-16 | 2003-01-15 | Ngk Spark Plug Co., Ltd | Spark plug |
| CN100362711C (en) * | 2001-01-31 | 2008-01-16 | 日本特殊陶业株式会社 | Mfg. method of spark plug and its mfg. appts. |
| JP2004134209A (en) * | 2002-10-10 | 2004-04-30 | Ngk Spark Plug Co Ltd | Spark plug and its manufacturing method |
| CN102165655A (en) * | 2008-09-30 | 2011-08-24 | 日本特殊陶业株式会社 | Spark plug for internal combustion engine |
| CN201601385U (en) * | 2010-01-22 | 2010-10-06 | 梁建清 | Side electrode of spark plugs |
| CN203445411U (en) * | 2013-08-09 | 2014-02-19 | 株洲湘火炬火花塞有限责任公司 | Sparking plug flat side electrode |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463664A (en) * | 2020-05-22 | 2020-07-28 | 杭州煜英智能科技有限公司 | Spark plug processing equipment |
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