CN101117932A

CN101117932A - Injector

Info

Publication number: CN101117932A
Application number: CNA2007101381867A
Authority: CN
Inventors: 村上敦; 阿保真治
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2006-08-01
Filing date: 2007-07-31
Publication date: 2008-02-06

Abstract

Provided is an injector with an electromagnetic valve. The electromagnetic valve comprises an electromagnetic coil, a stator, a stopping member, housing, a terminal and a lining. The stator is provided with an electromagnetic coil and attracting an armature facing to the axial one side of the armature after the electromagnetic coil is excitated. The stator is arranged on axial one side of the armature. The stopping member limits the displacement from the armature to the stator. The housing is arranged on one side of the stator. The terminal is inserted in the housing and electrically connected in the electromagnetic coil. The lining is held in the housing to insulate the terminal and the housing. The lining is forced to be inserted in a connection hole of the housing.

Description

Sparger

Technical field

The present invention relates to a kind of sparger.

Background technique

Sparger supplies fuel in the motor by burner oil, drives the valve body of jet nozzles usually as actuator with solenoid valve.Solenoid valve opens and closes back pressure cavity, and this back pressure cavity goes up at valve closing direction (being the direction that nozzle bore is closed) valve body is exerted pressure, and this back pressure cavity of fuel inflow and outflow.When solenoid valve was worked, the pressure of back pressure cavity was released, and fuel flows out back pressure cavity.Therefore, the pressure that imposes on valve body on the valve closing direction just reduces.As a result, valve body is opened nozzle bore and so burner oil.When solenoid valve quit work, back pressure cavity was closed, and fuel stops to flow out from back pressure cavity.Therefore, on the valve closing direction, impose on the pressure increase of valve body.As a result, valve body shut-off nozzle hole, thereby the fuel injection stops.

According to traditional sparger 100, solenoid valve 101 comprises stator 104, retainer 105, housing 106, terminal 107, lining 108 (Figure 11 A).Stator 104 is arranged on interior all sides of electromagnetic coil 102, and armature 103 is attracted to an axial side when electromagnetic coil 102 is energized.Retainer 105 is arranged in interior all sides of stator 104, and restriction armature 103 is towards the displacement amount of stator 104 sides.Housing 106 is arranged on the described axial side of stator 104.Terminal 107 is inserted in the housing 106, and is electrically connected with electromagnetic coil 102.Lining 108 is held by housing 106, and makes terminal 107 and housing 106 insulation.

When armature 103 when electromagnetic coil 102 is energized the back towards a described axial side shifting, the back pressure cavity (not shown) is opened (for example with the corresponding JP2005-105923A of CN0001860291 A).

Solenoid valve 101 is precise parts, and for example, the gap when armature 103 contact retainers 105 between armature 103 and the stator 104 is made as tens microns [μ m].After assembling, carry out the highi degree of accuracy grinding disposing on the pole-face 111 relative of stator 104 and on retainer 105 and the contact surface 112 that armature 103 contacts with armature 103.Then, by high-pressure wash or ultrasonic clean the dust that produces in the highi degree of accuracy grinding disposing is removed.

But the dust that enters dead end 114 shown in Figure 11 B is difficult to be removed fully.Related with fuel mobile phase is, when chamber 117 (is exposed in the space 117 that dust arrives in the lining 108 in hereinafter referred to as lining, its for example be formed on lining 108 in and hold the O shape circle chamber of O shape circle 116 corresponding and wherein terminal 107 be exposed to this space 117) time, may cause the insulation failure owing to the conduction between terminal 107 and the housing 106.In addition, this insulation failure also may arrive generation when exposing chamber 117 in the lining by contained metal foreign matter in fuel.In addition, also may be in the fuel contained sulphur (S) of insulation failure and be bonded to each other as the copper of making element (Cu) of terminal 107 takes place when the back produces conductive compound such as copper sulfide (CuS).

Expose chamber 117 in the lining in order to prevent that metal foreign matter or sulphur from entering, the gap 118 that is formed at diametrically between retainer 105 and the stator 104 can be filled resin etc.But this structure that gap 118 is filled resin becomes complicated, thereby manufacture cost is increased.In addition, in order to ensure the required space of potting resin, the area of the pole-face 111 of stator 104 needs to reduce, or the area of the contact surface 112 of retainer 105 needs to reduce.In any case, the minimizing of pole-face 111 areas can cause magnetic attraction to reduce, and the minimizing of contact surface 112 areas can cause the too early wearing and tearing of contact surface 112.All can damage from the performance of two aspect valves.

Summary of the invention

The present invention is intended to overcome above-mentioned shortcoming.Therefore, the objective of the invention is to reduce at lower cost in grinding process when producing dust or the metal foreign matter in the fuel or sulphur arrive the possibility that the insulation failure takes place between the terminal and housing when exposing in the chamber in the lining of injector solenoid valve.

In order to reach above-mentioned purpose of the present invention, a kind of sparger is provided, it is used for supplying fuel to motor by burner oil.This sparger comprises solenoid valve and nozzle bore.Described nozzle bore is opened with burner oil by solenoid valve.This solenoid valve comprises electromagnetic coil, stator, retainer, housing, terminal and lining.Electromagnetic coil is energized.Hold described electromagnetic coil in the stator, and after electromagnetic coil is energized, armature is attracted to an axial side.Stator is arranged on a described axial side of armature.Stop arrangement is on interior all sides of stator, and the qualification armature is towards the displacement amount of stator.Housing is arranged on the described axial side of stator.Terminal is inserted in the housing, and is electrically connected with electromagnetic coil.Lining is contained in the housing, and makes terminal and housing insulation.Lining is forced to be inserted in the attachment hole that is formed in the housing.

In order to reach above-mentioned purpose of the present invention, a kind of sparger is provided, it is used for supplying fuel to motor by burner oil.This sparger comprises solenoid valve and nozzle bore.Described nozzle bore is opened with burner oil by solenoid valve.This solenoid valve comprises electromagnetic coil, stator, retainer, housing, terminal and at least two linings.Electromagnetic coil is energized.Hold described electromagnetic coil in the stator, and after electromagnetic coil is energized, draw armature to a side draught towards armature shaft.Stator is arranged on a described axial side of armature.Stop arrangement is on interior all sides of stator, and the qualification armature is towards the displacement amount of stator.Housing is arranged on the described axial side of stator.Terminal is inserted in the housing, and is electrically connected with electromagnetic coil.Described at least two linings are contained in the housing, and make terminal and housing insulation.Described at least two linings are arranged in the axial direction.The opposition side lining, in any two linings in promptly described at least two linings (these any two linings are adjacent one another are in the axial direction) one has projection on a side end of this opposition side lining.This opposition side lining is arranged on the axial opposed side, and this opposition side is opposite with this axial side.This side end is positioned on the described axial side of this opposition side lining.The projection projection is advanced a described side and is formed circlewise, and with around terminal, and projection is radially being promoted downwards when the opposition side end of a side lining in these any two linings contacts.This side lining is arranged on the described axial side, and this opposition side end is positioned on the axial opposed side of this side lining.

In addition, in order to reach purpose of the present invention, provide a kind of sparger, it is used for supplying fuel to motor by burner oil.This sparger comprises solenoid valve and nozzle bore.Described nozzle bore is opened with burner oil by solenoid valve.This solenoid valve comprises electromagnetic coil, stator, retainer, housing, terminal and at least two linings.Electromagnetic coil is energized.Hold described electromagnetic coil in the stator, and after electromagnetic coil is energized, draw armature to a side draught towards armature shaft.Stator is arranged on a described axial side of armature.Stop arrangement is on interior all sides of stator, and the qualification armature is towards the displacement amount of stator.Housing is arranged on the described axial side of stator.Terminal is inserted in the housing, and is electrically connected with electromagnetic coil.Described at least two linings are contained in the housing, and make terminal and housing insulation.Described at least two linings are arranged in the axial direction.One side lining, in any two linings in promptly described at least two linings (these any two linings are adjacent one another are in the axial direction) one has projection on the opposition side end of this side lining.This side lining is arranged on this axial side.This opposition side end is positioned on the axial opposed side of this side lining, and this opposition side is opposite with this axial side.The projection projection is advanced described opposition side and is formed circlewise, and with around terminal, and projection is radially being promoted downwards when a side end of opposition side lining in these any two linings contacts.This opposition side lining is arranged on the described axial opposed side, and this side end is positioned on the axial side of this opposition side lining.

In addition, in order to reach purpose of the present invention, provide a kind of sparger, it is used for supplying fuel to motor by burner oil.This sparger comprises solenoid valve and nozzle bore.Described nozzle bore is opened with burner oil by solenoid valve.This solenoid valve comprises electromagnetic coil, stator, retainer, housing, terminal and at least two linings.Electromagnetic coil is energized.Hold described electromagnetic coil in the stator, and after electromagnetic coil is energized, draw armature to a side draught towards armature shaft.Stator is arranged on a described axial side of armature.Stop arrangement is on interior all sides of stator, and the qualification armature is towards the displacement amount of stator.Housing is arranged on the described axial side of stator.Terminal is inserted in the housing, and is electrically connected with electromagnetic coil.Described at least two linings are contained in the housing, and make terminal and housing insulation.Described at least two linings are arranged in the axial direction.Be arranged to around terminal at least one in following column region of a rubber-like annular portion: the zone between any two linings in described at least two linings (these any two linings are adjacent one another are in the axial direction); The zone of the opposition side end of the opposition side lining in described at least two linings; The zone at one side end place of the side lining in described at least two linings.Described opposition side lining is provided with fartherly than all the other linings in described at least two linings in the axial opposed side, and this opposition side is opposite with this axial side.This opposition side end is positioned on the axial opposed side of this opposition side lining.This side lining is provided with fartherly than all the other linings in described at least two linings on this axial side.This side end is positioned on the described axial side of this side lining.

At last, in order to reach purpose of the present invention, provide a kind of sparger, it is used for supplying fuel to motor by burner oil.This sparger comprises solenoid valve and nozzle bore.Described nozzle bore is opened with burner oil by solenoid valve.This solenoid valve comprises electromagnetic coil, stator, retainer, housing, terminal and a plurality of lining.Electromagnetic coil is energized.Hold described electromagnetic coil in the stator, and after electromagnetic coil is energized, draw armature to a side draught towards armature shaft.Stator is arranged on a described axial side of armature.Stop arrangement is on interior all sides of stator, and the qualification armature is towards the displacement amount of stator.Housing is arranged on the described axial side of stator.Terminal is inserted in the housing, and is electrically connected with electromagnetic coil.Described a plurality of lining is contained in the housing, and makes terminal and housing insulation.Terminal is forced to be inserted at least one of these a plurality of linings, and runs through in the axial direction between one the end face and opposite end face in these a plurality of linings.This opposite end face is opposite with this end face.The outer peripheral portion of contact end face (i.e. in this end face and this opposite end face) is centered on by dielectric element, wherein should contact end face contacts with described any lining at least one in these a plurality of linings in these a plurality of linings.

Description of drawings

From following description, claims and accompanying drawing, can understand the present invention and other purposes thereof, feature and advantage better.In the accompanying drawings:

Fig. 1 is the schematic representation according to the emitter construction of first embodiment of the invention;

Fig. 2 A is the sectional view according to first embodiment's solenoid valve;

Fig. 2 B is the sectional view according to the major component of first embodiment's solenoid valve;

Fig. 3 is the sectional view according to first embodiment's opposite side lining;

Fig. 4 A is the sectional view according to the major component of the solenoid valve of second embodiment of the invention;

The schematic representation of Fig. 4 B for contacting between the end according to second embodiment projection and lining before applying load;

The schematic representation of Fig. 4 C between the end that applies projection and lining after the load, contacting according to second embodiment;

Fig. 5 is the sectional view according to the major component of the solenoid valve of third embodiment of the invention;

Fig. 6 A is the planimetric map according to the 3rd embodiment two C shape elements before load applies;

Fig. 6 B is the sectional view according to the 3rd embodiment two C shape elements before load applies;

Fig. 6 C is the planimetric map of latter two C shape element of applying in load according to the 3rd embodiment;

Fig. 6 D is the sectional view of latter two C shape element of applying in load according to the 3rd embodiment;

Fig. 7 is the sectional view according to the major component of the solenoid valve of fourth embodiment of the invention;

Fig. 8 A is the sectional view according to the opposite side lining of first embodiment's variation example;

Fig. 8 B is another sectional view according to the opposite side lining of first embodiment's variation example;

Fig. 9 is the sectional view according to the solenoid valve of first embodiment's variation example;

Figure 10 is the sectional view according to the solenoid valve of first to the 4th embodiment's variation example;

Figure 11 A is the sectional view of the solenoid valve of prior art; And

Figure 11 B is the sectional view of major component of the solenoid valve of prior art.

Embodiment

Sparger according to first embodiment supplies fuel to motor by opened the nozzle post-injection fuel by solenoid valve.This solenoid valve comprises electromagnetic coil, stator, retainer, housing, terminal and lining.Electromagnetic coil is energized.Hold described electromagnetic coil in the stator, and after electromagnetic coil is energized, draw armature towards an axial side draught.Stop arrangement is on interior all sides of stator, and the restriction armature is towards the displacement amount of stator side.Housing is arranged on the described axial side of stator.Terminal is inserted in the housing, and is electrically connected with electromagnetic coil.Lining is contained in the housing, and makes terminal and housing insulation.Lining is forced to be inserted in the attachment hole that is formed in the housing.

Lining is divided at least two parts in the axial direction.The described opposite side lining that is arranged on the axial opposite side is forced to insert in this attachment hole.

This opposite side lining is formed and makes the diameter that is positioned at the part on this axial side of this another lining less than the diameter of the opening of this attachment hole, and the diameter that is positioned at the part on this axial opposite side of opposite side lining is greater than the diameter of the opening of this attachment hole.The described part that is positioned on the described axial opposite side of this another lining is pressing housing.

In addition, according to this sparger, retainer is forced to be inserted in the housing.

According to second embodiment's sparger, this lining is divided at least two parts in the axial direction.Among two linings adjacent one another are in the axial direction, (on a described side) is formed with a projection circlewise in an end being located at this another lining on the described axial opposite side, it projects in the described axial side, to center on terminal, this projection is radially promoted downwards by the end (on described opposite side) on a described axial side of being located at a side lining.

In addition, on an end of described opposite side lining (on a described side), therein projection by towards the side to pressing down be formed with groove.

In the sparger according to the 3rd embodiment, lining is divided at least two parts in the axial direction.At an end of being located at this opposite side lining on the described axial opposite side (at described opposite side), and in an end being located at the side lining on the described axial side (on a described side), annular portion of rubber-like is inserted at least one of zone between two linings adjacent one another are in the axial direction, with around terminal.

Annular portion has ring-type element, and they are stacked into and are inserted into to center on this terminal.In the ring-type element at least one forms in C shape mode, becomes at the rubber-like C shape element that makes progress in week.In two end faces of C shape part element at least one has incline section, its with respect to axial vertical plane inclination.In addition, the described relative end face with in two end faces of ring-type element has incline section, and this incline section abuts against the incline section of C shape element.

Form in the taper mode with the incline section of a relative C shape element in the both ends of the surface and the incline section of ring-type element.

According to the 4th embodiment's sparger, lining is divided into a plurality of parts.Terminal is forced to insert at least one lining, and runs through axially between the end face and other end of a described lining.In a described end face and other end of a described lining, center on by dielectric element against the excircle part of the end face of another lining.

In addition, this dielectric element is a lining, and lining of itself and this is different.

(first embodiment)

(first embodiment's structure)

Below with reference to the structure of Fig. 1-3 description according to first embodiment's sparger 1.

Sparger 1 for example can be installed in direct fuel injected engine (not shown) for example in the diesel engine, and supplies fuel to the inside of engine cylinder by burner oil.As shown in Figure 1, sparger 1 has jet nozzles 2 and solenoid valve 4.Jet nozzles 2 burner oils.Solenoid valve 4 is as actuator, and it drives the valve body 3 of jet nozzles 2.At the solenoid-actuated valves body thereby it is driven when opening nozzle bore 5, sparger 1 burner oil comes fueling like this.

That is, solenoid valve 4 opens and closes back pressure cavity 6, and the direction that this back pressure cavity is closed at valve (being nozzle bore 5 pent directions) goes up pressure feed is arrived valve body 3, and this back pressure cavity of fuel inflow and outflow.When solenoid valve was worked, the pressure in the back pressure cavity 6 was released, and fuel flows out back pressure cavity 6.Therefore, reduce at the pressure that is applied on the valve closing direction on the valve body 3.As a result, valve body 3 moves up, to open nozzle bore 5 and so burner oil.When solenoid valve 4 stopped, back pressure cavity 6 was closed, and fuel stops to flow out from back pressure cavity 6, therefore, increased at the pressure that is applied on the valve closing direction on the valve body 3.As a result, valve body 3 moves down, and with shut-off nozzle hole 5, and therefore stops the fuel injection.

Shown in Fig. 2 A, 2B, solenoid valve 4 comprises electromagnetic coil 10, stator 12, retainer 13, housing 14, terminal 15 and two linings 16,17.Electromagnetic coil 10 is energized.Hold described electromagnetic coil 10 in the stator 12, and after electromagnetic coil 10 is energized, draw armature 11 towards an axial side draught.Retainer 13 is arranged in interior all sides of stator 12, and restriction armature 11 is towards the displacement amount of stator 12 sides.Housing 14 is arranged on the described axial side of stator 12.Terminal 15 inserts in the housing 14, and is electrically connected with electromagnetic coil 10.

Lining

16,17 is held by housing 14, and makes terminal 15 and housing 14 insulation.

Electromagnetic coil 10 constitutes by twining lead around the bobbin 20 that is formed from a resin, and has dielectric coat on the surface of lead.Electromagnetic coil 10 is contained in the stator 12, and uses epoxy resin to be fixed in the stator 12.

Stator 12 is configured to make the gap that has tens microns [μ m] when armature 11 contacts retainers 13 between the armature 11 and stator 12.For this reason, the pole-face 22 of stator 12 need be processed with very high precision.Like this, pole-face 22 just may be with very high precision processing before assembling stator 12, perhaps may simultaneously on the contact surface 23 of pole-face 22 and retainer 13, carry out grinding disposing, so that after whole parts of stator 12, retainer 13 etc. all assemble, make pole-face 22 processing of aliging with contact surface 23.In addition, when pole-face adds man-hour with very high precision in advance, retainer 13 under the more outstanding situation of opposite side on described axle, carries out described grinding disposing than stator 12 on contact surface to be processed 23 therein.

Retainer 13 forms in the column mode, thereby and the fuel channel 26 in being forced to insert interior circumferential portion 25 and be located at housing 14 be communicated with.In addition, fuel channel 26 is communicated with sparger 1 outside, and the receiving cavity 27 of interior circumferential portion 25, armature 11 and fuel channel 26 constitute discharge channels, for 6 fuel outflow jet 1 in the back pressure cavity.

Because retainer 13 need be arranged on interior all sides of stator 12, retainer 13 will be formed and make the external diameter of retainer 13 less than the internal diameter of stator 12.Therefore, may make the dust that produces in the above-mentioned grinding process enter between retainer 13 and the stator 12 diametrically gap 29.Though this dust will be removed by high-pressure wash or ultrasonic clean after grinding disposing, the dust that enters the dead end 30 that is made of retainer 13, stator 12 and housing 14 is difficult to be removed.In addition, when sparger 1 proper functioning, the foreign matter in the fuel also may enter into gap 29 and dead end 30.

Terminal 15 is assembled into and is projected into a described axial side from stator 12

inboards.Lining

16,17 is tandem arrangement in the axial direction, and is contained in the housing 14.That is,

lining

16,17 is held by housing 14 and becomes to make them to be contained in this order in the housing 14 in the formed attachment hole 32, to have opening on described axial opposite side.

In

lining

16,17, be arranged on lining 16 on the described axial side and be formed and make the diameter of its end on described opposite side increase.O shape circle 33 is placed in housing 14 and the lining 16.In addition, lining 16 limits O shape circle chamber 35, and it holds another O shape circle 34, and this O shape circle 34 is being positioned on the described axial opposite side between lining 16 and the lining 17 (opposite side lining).In addition,

O shape circle

33,34 is used for sealed fuel.

Because O shape circle chamber 35 is the spaces (being to expose the chamber in the lining) in the lining 16, terminal 5 is exposed in this space, so when the dust that for example produces in the grinding process when foreign matter enters O shape circle chamber 35, may produce the insulation failure by the conduction between terminal 5 and the housing 4.

Described opposite side lining 17 is pressing stator 12, in case the stop ring epoxy resins is leaked, this epoxy resin is injected into before curing in the stator 12.Terminal 15 is forced to insert and run through this opposite side lining 17.

As shown in Figure 3, described opposite side lining 17 forms in the taper mode, thereby its diameter increases when described opposite side extends from a described axial side gradually at described opposite side lining 17.By forming opposite side lining 17 in the taper mode, the diameter that is positioned at the part on the described axial side of opposite side lining 17 is less than the diameter of the opening of attachment hole 32, and the diameter that is positioned at the part on the described axial opposite side of opposite side lining 17 is greater than the diameter of the opening of attachment hole 32.This part that is positioned on the described axial opposite side of opposite side lining is pressing housing 14.That is, opposite side lining 17 is forced to be inserted in the attachment hole 32.

(first embodiment's effect)

According to the solenoid valve 4 of first embodiment's sparger 1, opposite side lining 17 is forced to be inserted in the attachment hole 32.

Therefore, the fuel channel from dead end 30 guiding O shape circle chambeies 35 gets clogged.Like this, the dust that for example produces in the grinding process of foreign matter just can not arrive O shape circle chamber 35.In addition, by the diameter that makes opposite side lining 17 whole in the axial direction or the part greater than attachment hole 32, opposite side lining 17 can be forced to be inserted in the attachment hole 32, this makes assembly cost low.Therefore, in solenoid valve 4, reduced dust that foreign matter for example produces with low cost in grinding process and entered the possibility that produces the insulation failure between the possibility in O shape circle chamber 35 and terminal 15 and the housing 14.

In addition, opposite side lining 17, it more is positioned at axial opposite side than other elements, and is forced to be inserted in the attachment hole 32.

As a result, the fuel channel that leads to O shape circle chamber 35 can block by this opposite side lining 17 of the most close fuel flow field.Like this, just can prevent effectively that the dust that foreign matter for example produces in the grinding process from arriving O shape circle chamber 35.

In addition, opposite side lining 17 forms with taper, thereby its diameter increases when the described opposite side of a described axial side direction extends gradually at this opposite side lining 17, and the part that is positioned on the described axial opposite side of opposite side lining 17 is pressing housing 14.

As a result,, then another part is pushed in the attachment hole 32, this opposite side lining 17 can be inserted in the attachment hole 32 forcibly by at first this part hover ground on the described axial side of being arranged in of opposite side lining 17 being inserted into attachment hole 32.Like this, opposite side lining 17 just can be forced to insert at an easy rate.

(second embodiment)

In the sparger 1 according to second embodiment, shown in Fig. 4 A-4C, on its end of a described axial side, opposite side lining 17 has projection 37, and this projection projects into an axial side.Projection 37 forms circlewise, with around terminal 15, is pushed downwards diametrically by the end on the described axial opposite side of being positioned at of lining 16.

Therefore, around terminal 15, lining 16 and opposite side lining 17 closely are connected with each other reliably in the axial direction.Like this, can prevent that the dust that foreign matter for example produces in the grinding process from arriving O shape circle chamber 35.In addition, projection 37 is with the low cost setting, thereby in solenoid valve 4, can effectively reduce the dust that foreign matter for example produces in the grinding process with low cost and enter the possibility in O shape circle chamber 35 and the possibility that produces the insulation failure between terminal 15 and housing 14.

In addition, because the end of projection 37 on the described axial opposite side of being positioned at of lining 16, and lining 16 links to each other with opposite side lining 17 close to each otherly, and load applies in the axial direction.But,, reduced the possibility of damaging lining 16 and opposite side lining 17 downwards because projection 37 is pushed away by radially outward.

In addition, the end that is positioned on the described axial side of opposite side lining 17 is provided with groove 38.Groove 38 forms at the radially outward of projection 37, that is, form in the zone that projection 37 is pushed to.

Therefore, groove 38 holds the projection 37 that is pushed down, thereby can prevent to do lining 16 and opposite side lining 17 whole length in the axial direction too big.Like this, projection 37 can be formed further outstanding, and thereby lining 16 and opposite side lining 17 can closely be connected with each other.

(the 3rd embodiment)

In the sparger 1 according to the 3rd embodiment, to shown in Fig. 6 D, rubber-like annular portion 39 is inserted between lining 16 and the opposite side lining 17 as Fig. 5, to center on terminal 15.Annular portion 39 has two ring-

type elements

40,41, and they are stacked insertion to center on terminal 15.Ring-

type element

40,41 forms (that is, ring-

type element

40,41 upwards has the disappearance part in week) in C shape mode, and they are the rubber-like C shape element that makes progress in week (after, ring-

type element

40,41 is called as

C shape element

40,41).

C shape element

40,41 is arranged to contact with each other, thus its separately with the taper mode form and front faces facing each other be in contact with one another.

Promptly, the opposite side end face 42 of C shape element 40 (this end face is arranged on the axial side) is formed in the taper mode towards described axial side depression, one side end face of C shape element 41 (this end face is arranged on the described axial opposite side) is formed with the projection of taper mode advances (after this, a side end face 43 of the opposite side end face 42 of C shape element 40 and C shape element 41 is called as

tapered end face

42,43 respectively) in the described axial side.

Tapered end face

42,43 contacts with each other.

Therefore, when load is applied to the stacking portion of

C shape element

40,41 in the axial direction, apply along tapered

end face

42,43 component and perpendicular to the component of tapered end face 42,43.Like this, tapered end face 42 slides towards outer circumferential side on tapered end face 43, and the diameter of C shape element 40 is increased.In addition, tapered end face 43 all inwardly sides on conical component 42 are slided, so the diameter of C shape element 41 reduces.Therefore, the height of the stacking portion of

C shape element

40,41 reduces by the load that applies in the axial direction, and the stacking portion of

C shape element

40,41 is towards a described axial side resiliency urged lining 16, and towards described axial opposite side resiliency urged opposite side lining 17.

As a result, round terminal 15, the end on the stacking portion of

C shape element

40,41 and the described axial opposite side of lining 16 and the end that is positioned on the described axial side of opposite side lining 17 closely link to each other.Like this, just can prevent that the dust that foreign matter for example produces in the grinding process from arriving O shape circle chamber 35.In addition, the stacking portion of

C shape element

40,41 is with the low cost setting.Therefore, in solenoid valve 4, reduced dust that foreign matter for example produces with low cost in grinding process and entered the possibility that produces the insulation failure between possibility in the O shape circle chamber 35 and terminal 15 and the housing 14.

In addition, apply in the axial direction before the load, in the gap that forms between C shape element 40 and the housing 14 on the outer circumferential side.The value of supposing the gap on the outer circumferential side is c1, c2, and its central axis with attachment hole 32 is opposite each other as symmetry center, and value (c1+c2) is set to the possible increase on diameter owing to apply load axially less than C shape element 40.

On the other hand, apply before the load gap between C shape element 41 and terminal 15, forming on all sides in the axial direction.The value in the gap in supposing on all sides is c3, c4, and its central axis with attachment hole 32 is opposite each other as symmetry center, and value (c3+c4) is set to the possible minimizing on diameter owing to apply load axially greater than C shape element 41.

Therefore, when applying load in the axial direction, the diameter of C shape element 40 increases up to the increase of diameter consistent with (c1+c2) value.As a result, owing to apply load in the axial direction, the whole periphery of cardinal principle of C shape element 40 abuts against housing 14.Like this, can independently carry out axially aligning of C shape element 40 by applying load on axial, and just carry out axially aligning of C shape element 40 before need not applying load in the axial direction.

On the other hand, when owing to applying minimizing on the diameter that load produces in the axial direction when consistent with possible minimizing, the diameter of C shape element 41 stops to reduce.The whole interior of C shape element 41 do not abut against terminal 15 in week, even also form the gap after therefore applying load in the axial direction, and the central axis of

C shape element

40,41 is consistent each other owing to apply load in the axial direction immediately.Like this, can independently carry out axially aligning of C shape element 41 by applying load in the axial direction, and just carry out axially aligning of C shape element 41 before need not applying load in the axial direction.

(the 4th embodiment)

As shown in Figure 7, the sparger 1 according to the 4th embodiment comprises lining 46 and lining 47.Lining 46 is tabular, and terminal 15 is forced to insert and penetration liner 46.Lining 46 is forced to insert lining 47, and lining 47 and an O shape circle of lining 46 qualifications chamber 35.That is, terminal 15 is forced to be inserted in the lining 46 and penetration liner 46 between an end face 48 of lining 46 and the other end 49 in the axial direction.Lining 46 is forced to be inserted in the lining 47, thereby a described end face 48 of lining 46 closely is connected to and is formed in the lining 47 on the platform level part 50 on weeks.Therefore, limit O shape circle chamber 35 interior week of a described end face 48 and lining 47, and the outer peripheral portion of a described end face 48 centered on by lining 47, lining 47 is a dielectric element.

As a result, the thing dust that comes material for example in grinding process, the to produce route that the enters O shape circle chamber 35 very long similar labyrinth that just becomes.In addition, be difficult between terminal 15 and housing 14 or stator 12, form leak channel by metal foreign matter or conductive compound.In addition, can low cost carry out by the centering on of outer peripheral portion that is 47 pairs of described end faces 48 of lining of dielectric element.Like this, in solenoid valve 4, can reduce because the dust that foreign matter for example produces in the grinding process produces the possibility that insulation is failed etc. between terminal 15 and housing 14 with low cost.

By the outer peripheral portion that comes around a described end face 48 with lining 47, the dielectric element that no longer needs to provide other comes around an end face 48.Like this, can not increase and produce above-mentioned effect under the situation of number of elements.

(changing example)

Sparger 1 according to first embodiment, thereby opposite side lining 17 forms when opposite side lining 17 its diameter when the described opposite side of a described axial side direction extends in the taper mode and increases gradually, and the part that is positioned on the described axial opposite side of opposite side lining 17 is pressing housing 14.But shown in Fig. 8 A, by forming platform level part 52, its diameter is increasing in relatively little zone when described opposite side extends from a described axial side, and the part that is positioned on the described axial opposite side of opposite side lining 17 can press housing 14.Shown in Fig. 8 B, by with the diameter of opposite side lining 17 at the diameter that in gamut almost, is set on the axle greater than the opening of attachment hole 32, opposite side lining 17 can almost press housing 14 in the gamut in the axial direction.

According to first embodiment's sparger 1, retainer 13 forms in the cylindricality mode, and is forced to be inserted in the housing 14.But, as shown in Figure 9, can on a described axial side of retainer 13, form flange 53, flange is maintained between housing 14 and the stator 12, thus retainer can be assembled.

According to first to the 4th embodiment's sparger 1, lining 16 and opposite side lining 17 provide the electrical isolation between terminal 15 and the housing 14, and O shape

circle

33,34 is arranged in the position of not exclusively satisfying insulation function, only is used for sealed fuel.But, as shown in figure 10, except sealed fuel, O shape circle 55 electrical isolation that also can provide between terminal 15 and the housing 14.

According to first to the 3rd embodiment's sparger 1, lining 16 and opposite side lining 17 are arranged in the axial direction.But, also can arrange a lining or three linings and the lining more than three in the axial direction.When lining was arranged in the axial direction, the lining that need be forced to insert can be depending on and forms the situation that exposes the chamber in the lining.

According to second embodiment's solenoid valve 4, opposite side lining 17 has projection 37 on its end on a described axial side.But lining 16 also can have projection 37 on its end on described axial opposite side, and projection 37 can be against the end on the described axial side of being positioned at of opposite side lining 17.

According to second embodiment's sparger 1, projection 37 is radially outwards promoted downwards, forms groove 38 from projection 37 radially outwards.But projection 37 also can form and radially inwardly be promoted downwards, and groove 38 can radially inwardly form from projection 37.

In addition, according to second embodiment's sparger 1, lining 16 and opposite side lining 17 are arranged in the axial direction.But, also can axially go up and arrange three linings and three above linings.In this case, the lining that form projection 37 and groove 38 thereon can decide according to forming the situation that exposes the chamber in the lining.

According to the 3rd embodiment's sparger 1, annular portion 39 is inserted between lining 16 and the opposite side lining 17.But annular portion 39 also can be inserted into the end on the described axial side of being arranged in of end on the described axial opposite side of being arranged in of opposite side lining 17 or lining 16.And annular portion 39 also can be inserted in following two zones, that is, and and place, the end of another lining 17 on described opposite side, and the zone between lining 17 and opposite side lining 17 is located in the end of lining 16 on a described side.

In addition, according to the 3rd embodiment's sparger 1, annular portion 39 comprises C shape element 40,41.But annular portion 39 also can comprise the ring-type element with other shapes except that C shape, and annular portion 39 also can comprise a ring-type element or three ring-type elements and three above ring-type elements.

In addition, according to the 3rd embodiment's sparger 1, the ring-type element that is inserted between lining 16 and the opposite side lining 17 all is upwards to have disappearance partial

C shape element

40,41 week.But C shape element 40 also can be to have tapered end face 42 and the ring-type element that do not have disappearance part.The tapered end face 42 of this ring-type element can contact the tapered end face 43 of C shape element 41.In addition, C shape element 41 also can be to have tapered end face 43 and the ring-type element of disappearance part, and the tapered end face 43 of this ring-type element can contact the tapered end face 42 of C shape element 40.

In addition, according to the 3rd embodiment's sparger 1, though by tapered end face 42 respect to one another and tapered end face 43 are contacted C shape element 40 is contacted with C shape element 41, the shape of two end faces respect to one another is not limited to taper.That is, at their specific part separately, two end faces have incline section, and they are with respect to plane inclination perpendicular to axial direction.So, the part of inclination can be mutually against.The part of this inclination can form maybe in the taper mode can have curved surface.In addition, ring-type element can be set as and make whole end face respect to one another have incline section.

In addition, about the

C shape element

40,41 among the 3rd embodiment, whole end face respect to one another forms in the taper mode, and constitutes incline section separately, thereby forms

tapered end face

42,43.

In addition, according to the 3rd embodiment's sparger 1, be set to possible increasing diameter dosage less than C shape element 40 with the corresponding value of summation (c1+c2) in gap on the outer circumferential side.When the periphery of C shape element 40 during against housing 14, can be carried out axially aligning of

C shape element

40,41 because of the load that applies in the axial direction.But, by being set at possible reduction with the corresponding value of gap summation (c3+c4) on interior all sides less than the diameter of C shape element 41, and the interior week that makes C shape element 41 because of the load that applies on axial against terminal 15, can carry out axially aligning of

C shape element

40,41.

According to the 3rd embodiment's sparger 1, lining 16 and opposite side lining 17 are arranged in the axial direction.But, also can arrange three or three above linings in the axial direction.In this case, need to insert ring-type element and for example just depend on the situation that exposes the chamber in the formation lining in the position of

C shape element

40,41.

Sparger 1 according to the 4th embodiment comprises plate-like lining 46 and lining 47, and lining 47 is round the outer peripheral portion of a described end face 48 of lining 46.But the outer peripheral portion of the surface of contact between also two linings of tandem arrangement (for example lining 16 in first to the 3rd embodiment and opposite side lining 17) in the axial direction, two linings can be centered on by the dielectric material different with two linings.In this case, the lining of tandem arrangement more than three and three in the axial direction.When the lining arranged in the axial direction more than three or three, the position that the outer peripheral portion of contact surface is covered is depended on and is formed the situation that exposes the chamber in the lining.

Those skilled in the art also can know other advantages and variation.Therefore scope of the present invention is not limited to concrete representational device, and shown and described example.

Claims

1. one kind is used for by the sparger (1) of burner oil to the motor fueling, and described sparger (1) comprising:

Solenoid valve (4); And

Nozzle bore (5), wherein

Described nozzle bore (5) is opened by solenoid valve (4), with burner oil; And

Described solenoid valve (4) comprising:

The electromagnetic coil that is energized (10);

Stator (12) holds described electromagnetic coil (10) in it, and the axial side draught towards armature (11) draws armature (11) after electromagnetic coil (10) is energized, and wherein stator (12) is arranged on the described axial side of armature (11);

Retainer (13), it is arranged on interior all sides of stator (12), and restriction armature (11) is towards the displacement amount of stator (12);

Housing (14), it is arranged on the described axial side of stator (12);

Terminal (15), it is inserted in the housing (14), and is electrically connected with electromagnetic coil (10); And

Lining (17), it is contained in the housing (14), and makes terminal (15) and housing (14) insulation, and wherein lining (17) is forced to insert in the attachment hole (32) that is formed on the housing (14).

2. sparger according to claim 1 (1), it is characterized in that, described lining (17) is at least two linings (16,17) of arranging in the axial direction, and described one in described at least two linings (16,17) is forced to be inserted in the attachment hole (32), described one in wherein said at least two linings (16,17) is set to fartherly at least in the axial opposed side than all the other linings in described two linings (16,17), and this opposition side is opposite with a described axial side.

3. sparger according to claim 2 (1) is characterized in that,

Described diameter that is formed described one diameter that is positioned at the part on the described axial side that makes in described at least two linings (16,17) less than the opening of attachment hole (32) in described at least two linings (16,17), described one diameter that is positioned at the part on the described axial opposed side in described at least two linings (16,17) is greater than the diameter of the opening of attachment hole (32); And

Described one the described part that is positioned on the described axial opposed side in described at least two linings (16,17) is pressing housing (14).

4. sparger according to claim 2 (1) is characterized in that,

Described one in described at least two linings (16,17) is formed described one axially the going up in the cardinal principle gamut that makes in described at least two linings (16,17), and described one diameter in described at least two linings (16,17) is greater than the diameter of the opening of attachment hole (32); And

Described one described cardinal principle gamut in described at least two linings (16,17) is pressing housing (14) in the axial direction.

5. sparger according to claim 1 (1) is characterized in that, described retainer (13) is forced to be inserted in the housing (14).

6. sparger according to claim 1 (1) is characterized in that, described retainer (13) has the flange (53) that radially extends, and described flange (53) is positioned between housing (14) and the stator (12).

7. one kind is used for by the sparger (1) of burner oil to the motor fueling, and described sparger (1) comprising:

Solenoid valve (4); And

Nozzle bore (5), wherein

Described nozzle bore (5) is opened by solenoid valve (4), with burner oil; And

Described solenoid valve (4) comprising:

The electromagnetic coil that is energized (10);

Stator (12) has described electromagnetic coil (10) in it, and the axial side draught towards armature (11) draws armature (11) after electromagnetic coil (10) is energized, and wherein stator (12) is arranged on the described axial side of armature (11);

Housing (14), it is arranged on the described axial side of stator (12);

At least two linings (16,17), it is contained in the housing (14), and makes terminal (15) and housing (14) insulation, wherein

Described at least two linings (16,17) are arranged in the axial direction; And

Opposition side lining (17), it is in any two linings in described at least two linings (16,17) one, and has the projection (37) on the side end that is positioned at this opposition side lining (17), wherein said any two linings are adjacent one another are, wherein

Described opposition side lining (17) is set on the axial opposed side, and described opposition side is opposite with a described axial side;

A described side end is positioned on the described axial side of described opposition side lining (17); And

Described projection (37) projection is advanced in the described side, and form circlewise to center on terminal (15), and projection (37) is radially being promoted downwards when the opposition side end of a side lining (16) in described wantonly two linings contacts, a wherein said side lining (16) is arranged on the described axial side, and described opposition side end is positioned on the axial opposed side of a described side lining (16).

8. sparger according to claim 7 (1) is characterized in that, described opposition side lining (17) has groove (38) on a described side end of this opposition side lining (17), and groove (38) is arranged in projection (37) towards it zone that is pushed downwards.

9. one kind is used for by the sparger (1) of burner oil to the motor fueling, and described sparger (1) comprising:

Solenoid valve (4); And

Nozzle bore (5), wherein

Described nozzle bore (5) is opened by solenoid valve (4), with burner oil; And

Described solenoid valve (4) comprising:

The electromagnetic coil that is energized (10);

Housing (14), it is arranged on the described axial side of stator (12);

Described at least two linings (16,17) are arranged in the axial direction; And

One side lining (16), it is in any two linings in described at least two linings (16,17) one, and has the projection (37) on the opposition side end that is positioned at this side lining (16), wherein said any two linings are adjacent one another are, wherein

This side lining (16) is set on the described axial side;

Described opposition side end is positioned on the axial opposed side of a described side lining (16), and described opposition side is opposite with a described axial side; And

Described projection (37) projection is advanced in the opposition side, and form circlewise to center on terminal (15), and projection (37) is radially being promoted downwards when a side end of opposition side lining (17) in described wantonly two linings contacts, wherein said opposition side lining (17) is arranged on the described axial opposed side, and a described side end is positioned on the described axial side of described opposition side lining (17).

10. sparger according to claim 9 (1) is characterized in that, a described side lining (16) has groove (38) on the opposition side end of this side lining (16), and groove (38) is arranged in projection (37) towards it zone that is pushed downwards.

11. one kind is used for by the sparger (1) of burner oil to the motor fueling, described sparger (1) comprising:

Solenoid valve (4); And

Nozzle bore (5), wherein

Nozzle bore (5) is opened by solenoid valve (4), with burner oil; And

Described solenoid valve (4) comprising:

The electromagnetic coil that is energized (10);

Housing (14), it is arranged on the described axial side of stator (12);

Described at least two linings (16,17) are arranged in the axial direction; And

Rubber-like annular portion (39), it is placed with at least one zone in the following column region around terminal (15):

Be arranged in the zone between any two linings of described at least two linings (16,17), wherein said any two linings are adjacent one another are in the axial direction;

Be arranged in the zone at opposition side end place of the opposition side lining (17) of described at least two linings (16,17); Wherein

Described opposition side lining (17) is provided with fartherly than other linings in described at least two linings (16,17) on described axial opposed side, and described opposition side is opposite with a described axial side; And

Described opposition side end is positioned on the described axial opposed side of described opposition side lining (17); And

Be arranged in the zone at a side end place of a side lining (16) of described at least two linings (16,17); Wherein

A described side lining (16) is provided with fartherly than other linings in described at least two linings (16,17) on a described axial side; And

A described side end is positioned on the described axial side of a side lining (16).

12. sparger according to claim 11 (1), it is characterized in that, described annular portion (39) comprises a plurality of ring-type elements (40,41), they are stacked to center on terminal (15), and at least one in described a plurality of ring-type element (40,41) is C shape element, it forms C shape, and upwards has elasticity in week, wherein:

In two end faces of C shape element at least one has incline section, this incline section with respect to axial vertical plane inclination; And

The end face of any one in described a plurality of ring-type element (40,41) has the end slope part that abuts against this incline section, and wherein said end face is relative with described incline section.

13. sparger according to claim 12 (1), it is characterized in that the described end slope of the described end face of any in the incline section of at least one in two end faces of described C shape element and the described a plurality of ring-type element (40,41) partly forms taper.

14. one kind is used for by the sparger (1) of burner oil to the motor fueling, described sparger (1) comprising:

Solenoid valve (4); And

Nozzle bore (5), wherein

Described nozzle bore (5) is opened by solenoid valve (4), with burner oil; And

Described solenoid valve (4) comprising:

The electromagnetic coil that is energized (10);

Housing (14), it is arranged on the described axial side of stator (12);

A plurality of linings (46,47), they are contained in the housing (14), and make terminal (15) and housing (14) insulation, wherein

Described terminal (15) is forced to be inserted in described a plurality of lining (46,47) at least one, and run through in the axial direction between one the end face (48) and opposite end face (49) in described a plurality of lining (46,47), wherein said opposite end face (49) is opposite with a described end face (48); And

The outer peripheral portion of a contact end face (48), it is centered on by dielectric element, described contact end face is in a described end face (48) and the described opposite end face (49), and the described arbitrary lining (47) at least one in described a plurality of linings (46,47) in wherein said contact end face (48) and the described a plurality of linings (46,47) contacts.

15. sparger according to claim 14 (1) is characterized in that, described dielectric element is the described arbitrary lining (47) at least one in described a plurality of linings (46,47) in described a plurality of lining (46,47).