CN103956654B - A kind of spark plug - Google Patents
A kind of spark plug Download PDFInfo
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- CN103956654B CN103956654B CN201410196892.7A CN201410196892A CN103956654B CN 103956654 B CN103956654 B CN 103956654B CN 201410196892 A CN201410196892 A CN 201410196892A CN 103956654 B CN103956654 B CN 103956654B
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Abstract
A kind of spark plug, including insulator, central electrode, housing, separation plug-in unit and ground electrode.This insulator has the axis hole extended in the axial direction；Central electrode is inserted through axis hole the exposed end of this insulator；This housing is hollow columnar, and this housing is set in this insulator surface；Form one between this insulator and housing and fire space；This separation plug-in unit is plugged in this fires space and is fixed between the inwall of housing and insulator, this is fired space and is separated into ignition space and combustion-supporting space；The end of this central electrode is positioned at ignition space；This ground electrode is arranged on separation plug-in unit and is positioned on the inwall of ignition space, and forms the firing end portion in the gap with spark discharge between the end of central electrode.The spark plug of the present invention avoids situation deposit occur and causing it to corrode, and improves its service life.This separation dongle configuration can improve ignition effectiveness and the backflow efficiency of spark plug, thus improves the efficiency of combustion of internal combustion engine.
Description
Technical field
The present invention relates to the igniting field of a kind of internal combustion engine, especially relate to a kind of spark plug.
Background technology
Internal combustion engine be liquid or gaseous fuel are mixed with air after, directly input cylinder internal high compression combustion chamber burning outburst produce
Lively power.It it is a kind of heat engine converting heat into mechanical energy.Spark plug is mounted on internal combustion engine, mixing in combustor
Close the sparking of gas.Referring to Fig. 1, it is the structural representation of prior art spark plug 13.This spark plug 13 includes in one
Heart electrode 132, insulator 134, housing 136 and ground electrode 138.This insulator 134 is ceramics insulator, has along axle
The axis hole that line direction extends, this central electrode 132 is inserted through the axis hole of this insulator 134.It is exhausted that this housing 136 is arranged on this
The periphery of edge body 134, the surface of housing 136 has screw thread.This ground electrode 138 is connected with the end of this housing 136, and
Bending extension is relative with central electrode 132, and forms the gap of spark discharge between central electrode 132.This central electrode 132
And forming firing end portion between ground electrode 138, this firing end portion produces electric arc by the effect of pulse power, and then produces electricity
Spark lights the mixed gas of surrounding them, reaches the purpose of automatic ignition.Owing to the working environment of spark plug is exceedingly odious, should
Central electrode 132 and ground electrode 138 need to light a fire many times under high-temperature and high-pressure conditions in combustor, and can go out on this electrode
Existing deposit also causes it to corrode, and causes being worse off of spark plug.
In order to slow down the speed of worsening of spark plug, technical staff has carried out various improvement to spark plug.As by improving electrode material
Corrosion resistance or increase number of electrodes and overcome the etching problem of electrode.But, the corrosion resistance improving electrode material needs
Propose new electrode material, the etching problem of electrode cannot be changed in the case of using existing electrode material；For setting simultaneously
Put multiple electrode, owing to the plurality of electrode exposes to the open air in a combustion chamber equally, it will suffer erosion simultaneously, can not fundamentally solve
The certainly anticorrosive problem of electrode.
Or central electrode and ground electrode are arranged in the cavity of housing.Refer to Fig. 2, its be in prior art another
The structural representation of spark plug.This spark plug includes shell and the insulated ceramic core being fixedly installed in shell；This insulated ceramic core is built-in
There is central electrode 7；The upper end of this central electrode is stretched out insulated ceramic core and is formed an electric discharge end 17；This shell has a flame
Chamber 11, this electric discharge end 17 is in flame intracavity；The ground electrode 13 close to electric discharge end it is provided with in this flame chamber 11.Will
The discharge ignition apparatus that central electrode and ground electrode are constituted is arranged in flame chamber 11, first lights the mixing combustion in flame chamber 11
Gas, the mixed gas of the flame ignition combustion chambers of internal combustion engines of recycling flame chamber 11 ejection, create an efficient some fire environment,
And reduce the deposition velocity of deposit on electrode.But, for central electrode and ground electrode are arranged in the cavity of housing,
The spark that two electrodes can be made to produce enters the distance of combustor to be increased, and then makes the burning time generation of the mixed gas of combustor prolong
Late, owing to the compression stroke of internal combustion engine operation and the time of expansion stroke are the set time, then shorten the burning time of mixed gas,
Reduce the efficiency of combustion of internal combustion engine to a certain extent, be unfavorable for energy-conserving and environment-protective.
Summary of the invention
It is an object of the invention to the shortcoming overcoming prior art with not enough, it is provided that the spark plug that a kind of efficiency of combustion is high.
The present invention is achieved by the following technical solutions: a kind of spark plug, and it includes insulator, central electrode, housing, divides
Every plug-in unit and ground electrode.This insulator its have the axis hole extended in the axial direction；This central electrode is inserted through this insulator
Axis hole exposed end；This housing is hollow columnar, and this housing is set in this insulator surface；Shape between this insulator and housing
Becoming one to fire space, the end of this central electrode is positioned at this and fires space；This its be plugged in this fires space and be fixed on shell
Between inwall and the insulator of body, this being fired space and is separated into ignition space and combustion-supporting space, this combustion-supporting spatial loop is around this igniting
Space is also connected with this ignition space by through hole；The end of this central electrode is positioned at ignition space；This ground electrode is arranged on point
It is positioned on the inwall of ignition space every plug-in unit, and between the end of central electrode, forms the firing end portion in the gap with spark discharge.
Further, this separation plug-in unit is infundibulate, and its bottom is slot end, sheathed and prop up the outer wall of this insulator, its top
For wide mouth end, propping up the inwall of this housing, this separation plug-in unit is provided with the first different through hole of aperture and the second through hole.
Or, this separation plug-in unit includes separating part and fixed part；This separating part is funnel-form, sheathed on the body, its end
End is for slot end, sheathed and prop up the outer wall of this insulator, and its top is wide mouth end, not with the contact internal walls of this housing；This is solid
Determining that the outer wall of the one end in portion and this separating part is fixing to be connected, the inwall of its other end and this housing is fixed；This separating part is provided with
One through hole, this fixed part is provided with between the second through hole or adjacent fixed part and forms the second through hole.
Or, this separation plug-in unit is hollow columnar, and it is around this insulator, and its bottom is provided with screw thread, and top is provided with annular ground connection
Electrode, the bottom inwall of this housing is provided with a circle connecting edge, connecting edge be provided with screw thread, the bottom of this separation plug-in unit be connected
Rib spins fixing；This separation plug-in unit is provided with the first through hole.
Or, this separation plug-in unit includes separating part and fixed part；This separating part is hollow columnar, and it is around this insulator, its end
End props up the bottom surface of this housing and insulator junction；One end of this fixed part is fixing with the outer wall of this separating part to be connected, its another
The inwall with this housing is held to fix；This separating part is provided with the first through hole, and this fixed part is provided with the second through hole or adjacent fixed part
Between form the second through hole.
Further, the bottom of the separating part of this separation plug-in unit or separation plug-in unit is zigzag, and this zigzag recess forms connectivity points
Fire space and first through hole in combustion-supporting space.
Further, the inwall of this housing is provided with convex pad, and the outward flange of the fixed part of this separation plug-in unit rides upon on this convex pad, will
The opening of this housing makes its end bend inwards by punching press and props up this fixed part, so that the outward flange of this fixed part is sandwiched in convex
Pad and the inner fold of housing port divide between to be fixed.
Further, this fixed part is circular, and it is set on this separating part and is secured to, and the outward flange of this fixed part is
Zigzag, this jagged recess forms the second through hole；Or this fixed part is circular, it is set on this separating part also and it
Fixing, the opening outward flange of this housing is zigzag, and this jagged recess forms the second through hole.
Further, the aperture of this second through hole is more than the aperture of this first through hole.
Further, this separation plug-in unit also includes leading fire portion, and this leads fire portion is ducted body, and its one end connects with the wide mouth end of this separating part
Connecing, its other end extends to outside housing through the opening of housing.
Relative to prior art, the central electrode of the spark plug of the present invention is arranged in housing, it is to avoid deposit occurs and causes
The situation of its corrosion, improves its service life.Secondly, this separation plug-in unit ignition space is divided into different functional spaces,
Ignition effectiveness and the power of spark plug can be improved further, thus improve the efficiency of combustion of internal combustion engine.Further, the present invention
Separation dongle configuration simple, it uses, with the housing of spark plug, the processing method that after processing respectively, fit is fixing again, easily realizes,
And can be applicable to various sizes of spark plug, reduce the cost of overlapping development, the production efficiency of spark plug can be improved.
Below in conjunction with Figure of description, the spark plug of the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of spark plug of the prior art.
Fig. 2 is the structural representation of another kind of spark plug in prior art.
Fig. 3 is embodiment 1 structural representation of the spark plug of the present invention.
Fig. 4 is the perspective view separating plug-in unit shown in Fig. 3.
Fig. 5 is the structural representation of the embodiment 2 of the spark plug of the present invention.
Fig. 6 is the structural representation separating plug-in unit of embodiments of the invention 2.
Fig. 7 is the structural representation of the variant embodiment separating plug-in unit of embodiments of the invention 2.
Fig. 8 is the structural representation of the variant embodiment separating plug-in unit of embodiments of the invention 2.
Fig. 9 is the structural representation of the variant embodiment separating plug-in unit of embodiments of the invention 2.
Figure 10 is the structural representation separating plug-in unit of embodiments of the invention 3.
Figure 11 is the structural representation separating plug-in unit of embodiments of the invention 4.
Figure 12 is the structural representation separating plug-in unit of the embodiment of the present invention 5.
Figure 13 a, 13b, 13c are the three kinds of view separating plug-in unit and the relative position of housing of the embodiment of the present invention 5.
Detailed description of the invention
Embodiment 1
Please refer to Fig. 3, it is embodiment 1 structural representation of spark plug of the present invention.This spark plug 20 includes center
Electrode 21, insulator 24, housing 26 and separation plug-in unit 28.This insulator 24 is ceramics insulator, and it has along axis side
To the axis hole extended.This central electrode 21 is inserted through axis hole the exposed end 211 of this insulator 24.During this housing 26 is
Hollow structure, be set between the surface of this insulator 24, and this housing 26 and insulator 24 form an annular fire space A,
The end 211 of this central electrode is positioned at this ignition space A.This separation plug-in unit 28 is plugged in this and fires in space, and fixes
Between the inwall and insulator of housing, this is fired space A and is separated into ignition space C and combustion-supporting space D；Wherein, this point
Fire space C is to separate the space between plug-in unit inwall and insulator 24, and this combustion-supporting space D is for separating in plug-in unit outer wall and housing
Space between wall, and this combustion-supporting spatial loop connects with this ignition space around this ignition space and by through hole.Ground electrode is arranged
It is positioned on the inwall of ignition space separating plug-in unit, and between the end 211 of central electrode, forms the point with spark-discharge gap
Fire end portion.The solderable noble metal of outer surface of this central electrode 21 and ground electrode, such as iraurite, to improve the performance of its igniting.
Please refer to Fig. 4, it is the perspective view separating plug-in unit shown in Fig. 3.This separation plug-in unit 28 is hollow funnel
Shape, its bottom 28a is slot end, and its top 28b is wide mouth end, and it is set on this insulator 24, and slot end is sheathed and supports
Living the outer wall of this insulator 24, wide mouth end props up the inwall of this housing, thus this is fired space A and is separated into ignition space B
With combustion-supporting space C.This separation plug-in unit is provided with the first through hole 282 and the second through hole 283, with connection igniting space B and combustion-supporting
Space C.Wherein, the aperture of this first through hole 282 and the second through hole 283 must vary in size, to realize the most airtight point
Convection current between fire space and combustion-supporting space and circulation.This is that the igniting owing to being pushed into spark plug when mixed gas by combustor is empty
In, the active force produced in same space is the same；When if the aperture of this first through hole and the second through hole is consistent
Time, when the gas of ignition space enters combustion-supporting space by active force both to be passed through through holes, combustion-supporting space also can produce instead
Active force stops gas to enter, and when the gas pressure in two spaces reaches identical, gas just cannot be at ignition space and combustion-supporting
Flow in space.The mixture by fuel and air due to gas again, if two spaces can not persistent loop convection current, then can
Reduce the efficiency of burning.It then becomes necessary to make the aperture of the first through hole 282 and the second through hole 283 different.This separation plug-in unit
Wide mouth end is fixed by welding in this inner walls.
When the induction stroke of internal combustion engine, the mixed gas that fuel and air are formed is simultaneously filled with the cylinder body of combustor, due to cylinder body
Interior pressure is much larger than the pressure of plug ignition end, and mixed gas is advanced into rapidly the ignition space B of spark plug, and leads to
The through hole 282 crossing separation plug-in unit 28 enters combustion-supporting space C.
And when the pulse firing of spark plug, discharge between central electrode 21 and the ground electrode in ignition space B ignitor
Mixed gas around, now the gas in ignition space B is ignited and expands rapidly, and pressure increases rapidly, and then promotes fire
Flower discharges to cylinder body direction.Meanwhile, the spark of this ignition space B ignites combustion-supporting by the first through hole 282 and the second through hole 283
The mixed gas of storage in the C of space, the mixed gas in combustion-supporting space C expands rapidly after firing, and its spark is simultaneously by first
Through hole 282 or the second through hole 283 are supplemented to ignition space, make spark plug can provide power more constantly at firing stroke.When
During firing stroke, when ignition space reaches consistent with the pressure in combustion-supporting space, due to the first through hole and the aperture of the second through hole
Inconsistent, uniform pressure acts on two kinds of different through holes in pore size cross sectional face, can produce pressure difference, and mixed gas is at pressure difference
Realize gas under effect and can continue cycling through convection current in the two space, to ensure that the continuation of spark plug operates.
Relative to prior art, the central electrode 21 of the spark plug of the present invention is arranged in housing, it is to avoid deposit occurs and leads
Cause the situation of its corrosion, improve its service life.Secondly, the separation dongle configuration of the present invention is simple, itself and the shell of spark plug
Body uses the processing method that after processing respectively, fit is fixing again, easily realizes, and can be applicable to various sizes of spark plug, reduces
The cost of overlapping development, can improve the production efficiency of spark plug.Further, this separation plug-in unit ignition space is divided into difference
Functional space, it is possible to improve further ignition effectiveness and the power of spark plug, thus improve the efficiency of combustion of internal combustion engine.
Embodiment 2
The spark plug of the present embodiment 2 is roughly the same with embodiment 1, and it differs only in the structure phase separating plug-in unit of spark plug
Different.Please refer to Fig. 5 and Fig. 6, wherein, Fig. 5 is the structural representation of embodiment 2 of spark plug of the present invention.Fig. 6
It it is the structural representation separating plug-in unit 38 of the present embodiment 2.This separation plug-in unit 38 includes separating part 382 and fixed part 384.
Wherein, this separating part 382 is funnel-form, and sheathed its bottom 38a is slot end on the body, and its top 38b is wide
Mouthful end, the outer wall of its slot end this insulator 24 sheathed the hole 383 of formation with interval one annular, wide mouth end not with this shell
The contact internal walls of body.This fixed part 384 is circular, and it is set on this separating part 382 and is secured to, this fixed part 384
The inwall of outward flange and this housing fix.Thus, this is fired space A and is separated into ignition space B and combustion-supporting by this separation plug-in unit
Space C, this hole 383 connection igniting space B and combustion-supporting space C.
In the present embodiment, being provided with convex pad 362 on the inwall of this housing, the outward flange of this fixed part 384 rides upon this convex pad
On 362, then make its end bend inwards by punching press the opening of this housing and prop up this fixed part 384, so that this is fixed
The outward flange in portion be sandwiched in the inner fold of convex pad and housing port divide between to be fixed, make the opening of housing form cambered surface simultaneously
Slot end.This fixed part 384 is provided with the second through hole 385, and the aperture of this second through hole 385 is more than between this hole 383
Away from.
When the induction stroke of internal combustion engine, the mixed gas that fuel and air are formed is simultaneously filled with the cylinder body of combustor, due to cylinder body
Interior pressure is much larger than the pressure of plug ignition end, and mixed gas is advanced into rapidly the ignition space B of spark plug, simultaneously
Entering combustion-supporting space C by the second through hole 385, a small amount of mixed gas enters combustion-supporting sky by the hole 383 of separating part 382
Between C.Owing to this ignition space B, combustion-supporting space C are different with the spatial volume of combustor, mixed gas can pass through separating part top
End opening, the second through hole and hole be Rapid Circulation flowing in several spaces, makes the oil molecule inside mixed gas and air molecule
Mixed the most more fully, and well-mixed gaseous fuel can be effectively improved the combustion rate of fuel.
And when the pulse firing of spark plug, around the ignitor that discharges between central electrode and the ground electrode in ignition space B
Mixed gas, now the gas in ignition space B is ignited and expands rapidly, and pressure increases rapidly, so promote spark to
Cylinder body direction discharges.Meanwhile, the spark of this ignition space B is ignited the mixing of storage in combustion-supporting space C by through hole hole 383
Gas, the mixed gas in combustion-supporting space C expands rapidly after firing, owing to the aperture of the second through hole 385 is more than hole 383
Aperture, the spark in combustion-supporting space C runs through the second bigger through hole 385 of aperture and discharges to cylinder body direction.Of short duration one
In the secondary firing stroke time, in ignition space B and combustion-supporting space C, two bursts of different spaces fire the high energy air-flow of generation jointly to combustion
Burning room discharges, it is possible to more quickly light the fuel in combustor.In fixing stroke, the time of full combustion of fuel more fills
Point, the heat energy of release is more, thus improves the efficiency of combustion of internal combustion engine, reaches the effect of energy-saving and emission-reduction.
As the variant embodiment of the present embodiment, this fixed part could be arranged to multiple outer wall with separating part and fixes the connection being connected
Sheet, the most adjacent two connect the gap between sheet can realize the effect of the second through hole；Or as it is shown in fig. 7, this circular fixed part
Outward flange be zigzag, when by the opening of this housing by punching press make its end bend inwards prop up this fixed part time, this shell
The interior turn of bilge of body and the jagged outer edge of fixed part i.e. form multiple second through hole.It addition, as shown in Figure 8, this separating part
Bottom props up the outer wall of this insulator, and this separating part is provided with the first through hole 383 ', and this fixed part can be with the wide mouth of this separating part
The port edge of end connects.Also can be as it is shown in figure 9, one end of this fixed part extends to this fires in space B.
This fixed part can pass through one-body molded with separating part or weld fixing with both realizations；Also can be by arranging on separating part
Socket, arranges slotting convex on this separating part, convex makes the two fix with coordinating of socket by inserting.
Embodiment 3
The spark plug of the present embodiment 3 is roughly the same with embodiment 2, and it differs only in the structure phase separating plug-in unit of spark plug
Different.Referring to Figure 10, it is the structural representation separating plug-in unit 48 of the present embodiment 3.This separation plug-in unit include separating part 482,
Fixed part 484 and lead fire portion 486.This separating part 482 is funnel-form, and sheathed its bottom is slot end on the body,
Its top is wide mouth end, and its slot end is sheathed and props up the outer wall of this insulator 24, wide mouth end not with the contact internal walls of this housing.
This fixed part 484 is circular, and it is set on this separating part 382 and fixes with its outer wall, the outward flange of this fixed part 384
Fix with the inwall of this housing.Thus, this is fired space A and is separated into ignition space B and combustion-supporting space C by this separation plug-in unit.
This leads fire portion 486 for hollow cylinder or stage body, and in the present embodiment, this is led fire portion and can be deformed into horn-like, its slot end and this
The top of separating part 482 connects, and its other end extends to outside housing through the opening of housing.This separating part 482 is provided with
One through hole 483, this fixed part 484 is provided with the second through hole 485, and the aperture of this second through hole 485 is more than this first through hole
The aperture of 483.The aperture on the top of this separating part 482 is more than the aperture of this second through hole 485.
Owing to the pore size of connection ignition space, space each with combustor, combustion-supporting space is different, and air-flow can be the biggest along aperture
Direction flowing, therefore, when the air inlet induction stroke at internal combustion engine, the mixed gas that fuel and air are formed is simultaneously filled with combustion
Burning the cylinder body of room, owing to the pressure in cylinder body is much larger than the pressure of plug ignition end, mixed gas is advanced into rapidly spark
The ignition space B of plug, enters combustion-supporting space C by the second through hole 485 simultaneously, and a small amount of mixed gas passes through separating part 482
The first through hole 483 enter combustion-supporting space C.Owing to this ignition space B, combustion-supporting space C are different with the spatial volume of combustor,
Mixed gas can pass through the Rapid Circulation flowing in several spaces of separating part top end opening, the second through hole and hole, makes mixed gas
Oil molecule and the air molecule of the inside are mixed the most more fully, and well-mixed gaseous fuel can be effectively improved
The combustion rate of fuel.
And when the pulse firing of spark plug, around the ignitor that discharges between central electrode and the ground electrode in ignition space B
Mixed gas, now the gas in ignition space B is ignited and expands rapidly, and pressure increases rapidly, so promote spark to
Cylinder body direction discharges.Meanwhile, the spark of this ignition space B is ignited storage in combustion-supporting space C by through hole the first through hole 483
Mixed gas, the mixed gas in combustion-supporting space C expands rapidly after firing, owing to the aperture of the second through hole 485 leads to more than first
The aperture in hole 483, the spark in combustion-supporting space C runs through the second bigger through hole 485 of aperture and discharges to cylinder body direction.?
In the of short duration firing stroke time, in ignition space B and combustion-supporting space C, two bursts of different spaces fire the high energy air-flow of generation
Jointly discharge to combustor, it is possible to more quickly light the fuel in combustor.In fixing stroke, full combustion of fuel
Time is more abundant, and the heat energy of release is more, thus improves the efficiency of combustion of internal combustion engine, reaches the effect of energy-saving and emission-reduction.
It addition, this leads fire portion 486 can play the effect guided of bursting out spark, the spark in pilot ignition space is more concentrated rapidly
Discharge to combustor.
Embodiment 4
The spark plug of the present embodiment 4 is roughly the same with embodiment 1, and it differs only in the structure phase separating plug-in unit of spark plug
Different.Referring to Figure 11, it is the structural representation separating plug-in unit 58 of the present embodiment 4.This separation plug-in unit 58 is hollow columnar,
Bottom 58a outer wall is provided with screw thread, and its top 58b is provided with annular ground electrode 52.The bottom of this housing is provided with a circle connecting edge 262,
The inwall of connecting edge is provided with screw thread, is spun with connecting edge by the bottom 58a of this separation plug-in unit 58, thus is set by separation plug-in unit 58
Put firing in the A of space at housing and insulator, and this is fired space A be separated into ignition space C and combustion-supporting space D.Its
In, this ignition space C is to separate the space between plug-in unit inwall and insulator, and this combustion-supporting space D is for separating plug-in unit outer wall and shell
Space between internal wall, and this combustion-supporting spatial loop is around this ignition space C.The end 211 of this central electrode is positioned at this separation and inserts
The center of the top annular ground electrode 52 of part 58.The sidewall of this separation plug-in unit 58 is provided with the first through hole 583, should with connection
Ignition space C and combustion-supporting space D.Wherein, in the aperture of this first through hole 583 is less than outer wall and the housing of this separation plug-in unit 58
The distance of wall, and the distance of the outer wall of this separation plug-in unit 58 and inner walls is less than the aperture of this ground electrode internal ring.
Its action principle as above, when the pulse firing of spark plug, is put between central electrode and the ground electrode in ignition space B
Mixed gas around electricity ignitor, now the gas in ignition space B is ignited and expands rapidly, and pressure increases rapidly,
And then promote spark to be discharged to cylinder body direction by the centre bore of ground electrode.Meanwhile, the spark of this ignition space B passes through through hole
First through hole 583 ignites the mixed gas of storage in combustion-supporting space C, and the mixed gas in combustion-supporting space C expands rapidly after firing,
The distance of outer wall with inner walls owing to separating plug-in unit 58 is more than the aperture of the first through hole 583, the spark in combustion-supporting space C
Directly burst out release to cylinder body.Within the of short duration firing stroke time, in ignition space B and combustion-supporting space C two strands different
Space fires the high energy air-flow of generation and jointly discharges to combustor, it is possible to more quickly light the fuel in combustor.Fixing
In stroke, the time of full combustion of fuel is more abundant, and the heat energy of release is more, thus improves the efficiency of combustion of internal combustion engine, reaches
Effect to energy-saving and emission-reduction.
Embodiment 5
The spark plug of the present embodiment 5 is roughly the same with embodiment 4, and it differs only in the structure phase separating plug-in unit of spark plug
Different.Referring to Figure 12, it is the structural representation separating plug-in unit 68 of the present embodiment 5.This separation plug-in unit 68 includes separating part
682 and fixed part 684.This separating part 682 is hollow columnar, and bottom 68a is zigzag, and the inwall of its top 68b is provided with ring
Shape ground electrode 62.This fixed part 684 is circular, and it is set on this separating part 682 and is secured to.This fixed part 684
Outward flange be zigzag.
The inwall of this housing 66 is provided with convex pad 662.The separating part 682 of this separation plug-in unit 68 is enclosed within the periphery of this insulator,
Bottom 68a props up the bottom surface of this housing and insulator junction, and the outward flange of this fixed part 684 rides upon on this convex pad 662,
Then make its end bend inwards by punching press the opening of this housing and prop up this fixed part 684, so that outside this fixed part
Edge be sandwiched in the inner fold of convex pad and housing port divide between to be fixed, make the opening of housing form cambered surface slot end simultaneously.
The zigzag recess of the bottom 68a of this separating part 682 forms connection igniting space B and first through hole 683 of combustion-supporting space C,
This fixed part 684 outer peripheral zigzag recess forms the second through hole 685, and the aperture of this second through hole 685 more than this first
The aperture of through hole 683.
It is prone to processing with the zigzag design of fixed part outward flange bottom this separating part, need not be the most again on separating part and fixed part
Form through hole, convenient processing, improve the efficiency of work.
It addition, as the variant embodiment of the present embodiment, the outward flange of this fixed part is smooth circular arc, and by this housing
The edge of opening is set to zigzag, makes its end bend inwards by punching press the opening of this housing equally and props up this and fix
During portion, the zigzag recess of the interior turn of bilge of this housing i.e. forms multiple second through hole.
Further, as shown in Figure 13 a, 13b and 13c, for the spark plug of different model, this separation plug-in unit can be arranged on shell
Body interior, maintains an equal level with the port of housing or protrudes from the port of housing.
The structure of the present invention above-mentioned segmentation plug-in unit is not limited to above-described embodiment, and the architectural feature in each embodiment can reasonable cross coupled
Use, to be suitable for the spark plug of different model.The invention is not limited in above-mentioned embodiment, if the various changes to invention
Or deformation is without departing from the spirit and scope of the present invention, if these are changed and deform claim and the equivalent technologies belonging to the present invention
Within the scope of, then the present invention is also intended to comprise these changes and deformation.
Claims (10)
1. a spark plug, it is characterised in that include
Insulator, it has the axis hole extended in the axial direction；
Central electrode, its axis hole being inserted through this insulator exposed end；
Housing, it is hollow columnar, and this housing is set in this insulator surface；Form one between this insulator and housing and fire sky
Between, the end of this central electrode is positioned at this and fires space；
Separating plug-in unit, it is plugged in this fires space and is fixed between the inwall of housing and insulator, this is fired space and divides
Being divided into ignition space and combustion-supporting space, this combustion-supporting spatial loop connects around this ignition space and by through hole with this ignition space,
Described separation plug-in unit is provided with the first different through hole of aperture and the second through hole, to connect ignition space and combustion-supporting space；Should
The end of central electrode is positioned at ignition space；
Ground electrode, it is arranged on separation plug-in unit and is positioned on the inwall of ignition space, and between the end of central electrode, formation has
The firing end portion in the gap of spark discharge.
Spark plug the most according to claim 1, it is characterised in that: this separation plug-in unit is infundibulate, and its bottom is slot end,
Sheathed and prop up the outer wall of this insulator, its top is wide mouth end, props up the inwall of this housing, and this separation plug-in unit is provided with
The first through hole that aperture is different and the second through hole.
Spark plug the most according to claim 1, it is characterised in that: this separation plug-in unit includes separating part and fixed part；This separation
Portion is funnel-form, and sheathed its bottom is slot end on the body, sheathed and prop up the outer wall of this insulator, its top
End is for wide mouth end, not with the contact internal walls of this housing；One end of this fixed part is fixing with the outer wall of this separating part to be connected, its
The inwall of the other end and this housing is fixed；This separating part is provided with the first through hole, and this fixed part is provided with the second through hole or phase
The second through hole is formed between adjacent fixed part.
Spark plug the most according to claim 1, it is characterised in that: this separation plug-in unit is hollow columnar, and it is around this insulator,
Its bottom is provided with screw thread, and top is provided with annular ground electrode, and the bottom inwall of this housing is provided with a circle connecting edge, connecting edge
Be provided with screw thread, the bottom of this separation plug-in unit and connecting edge spin fixing；This separation plug-in unit is provided with the first through hole.
Spark plug the most according to claim 1, it is characterised in that: this separation plug-in unit includes separating part and fixed part；This separation
Portion is hollow columnar, and it props up the bottom surface of this housing and insulator junction around this insulator, its bottom；This fixed part
The outer wall of one end and this separating part fixing be connected, the inwall of its other end and this housing is fixed；This separating part is provided with
One through hole, this fixed part is provided with between the second through hole or adjacent fixed part and forms the second through hole.
6. according to the spark plug described in claim 2,3 or 5, it is characterised in that: the separating part of this separation plug-in unit or separation plug-in unit
Bottom is zigzag, and this zigzag recess forms connection ignition space and first through hole in combustion-supporting space.
7. according to the spark plug described in claim 3 or 5, it is characterised in that: the inwall of this housing is provided with convex pad, and this separation is inserted
The outward flange of the fixed part of part rides upon on this convex pad, by the opening of this housing by punching press make its end bend inwards to
Live this fixed part so that the outward flange of this fixed part be sandwiched in the inner fold of convex pad and housing port divide between to be consolidated
Fixed.
Spark plug the most according to claim 7, it is characterised in that: this fixed part is circular, and it is set on this separating part
And be secured to, and the outward flange of this fixed part is zigzag, this jagged recess forms the second through hole；Maybe this is fixed
Portion is circular, and it is set on this separating part and is secured to, and the opening outward flange of this housing is zigzag, this saw
The recess of dentation forms the second through hole.
Spark plug the most according to claim 3, it is characterised in that: this separation plug-in unit also includes leading fire portion, and this leads during fire portion is
Empty body, its one end is connected with the wide mouth end of this separating part, and its other end extends to outside housing through the opening of housing.
Spark plug the most according to claim 8, it is characterised in that: the aperture of this second through hole is more than the aperture of this first through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410196892.7A CN103956654B (en) | 2014-05-09 | 2014-05-09 | A kind of spark plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410196892.7A CN103956654B (en) | 2014-05-09 | 2014-05-09 | A kind of spark plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103956654A CN103956654A (en) | 2014-07-30 |
| CN103956654B true CN103956654B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410196892.7A Expired - Fee Related CN103956654B (en) | 2014-05-09 | 2014-05-09 | A kind of spark plug |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529616B (en) * | 2014-09-30 | 2017-07-25 | 张蝶儿 | A kind of spark plug |
| CN106549304B (en) * | 2015-09-21 | 2019-02-05 | 张蝶儿 | A kind of spark plug |
| CN106549303B (en) * | 2015-09-21 | 2019-02-05 | 张蝶儿 | A kind of spark plug |
| CN106549306B (en) * | 2015-09-21 | 2019-03-26 | 何东铖 | A kind of spark plug |
| CN106549305B (en) * | 2015-09-21 | 2019-02-05 | 张蝶儿 | A kind of spark plug |
| CN106549307B (en) * | 2015-09-21 | 2019-02-05 | 张蝶儿 | A kind of spark plug |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1538750A (en) * | 1922-08-25 | 1925-05-19 | Scognamillo Salvatore | Spark plug |
| CN103746291A (en) * | 2014-01-29 | 2014-04-23 | 张蝶儿 | Sparking plug |
| CN204012190U (en) * | 2014-05-09 | 2014-12-10 | 张蝶儿 | A kind of spark plug |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09260024A (en) * | 1996-03-26 | 1997-10-03 | Ngk Spark Plug Co Ltd | Spark plug with built-in pressure sensor |
| JP5406249B2 (en) * | 2011-07-06 | 2014-02-05 | 日本特殊陶業株式会社 | Igniter plug and igniter plug manufacturing method |
-
2014
- 2014-05-09 CN CN201410196892.7A patent/CN103956654B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1538750A (en) * | 1922-08-25 | 1925-05-19 | Scognamillo Salvatore | Spark plug |
| CN103746291A (en) * | 2014-01-29 | 2014-04-23 | 张蝶儿 | Sparking plug |
| CN204012190U (en) * | 2014-05-09 | 2014-12-10 | 张蝶儿 | A kind of spark plug |
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| Publication number | Publication date |
|---|---|
| CN103956654A (en) | 2014-07-30 |
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