CN100494665C - Injection valve and manufacturing method for the same - Google Patents
Injection valve and manufacturing method for the same Download PDFInfo
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- CN100494665C CN100494665C CNB2006100935599A CN200610093559A CN100494665C CN 100494665 C CN100494665 C CN 100494665C CN B2006100935599 A CNB2006100935599 A CN B2006100935599A CN 200610093559 A CN200610093559 A CN 200610093559A CN 100494665 C CN100494665 C CN 100494665C
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Abstract
A fuel injection valve includes a substantially cylindrical housing that at least partially surrounds an outer periphery of a coil. The housing is formed of a magnetic material. A fixed core and a movable core are located on a radially inner side of the coil. The movable core is opposed to the fixed core. The movable core is attracted to the fixed core by magnetic attractive force generated between the movable core and the fixed core. A valve is axially movable together with the movable core. A holder is formed of a magnetic material separately from the housing. The holder connects with a first axial end of the housing. The holder accommodates the valve. A cap is formed of a magnetic material separately from both the housing and the holder. The cap connects with a second axial end of the housing.
Description
Technical field
The present invention relates to the manufacture method of injection valve and this injection valve.
Background technique
Usually, injection valve has the solenoid actuator that comprises coil and board member.Board member is formed by magnetic material.Board member is along the periphery of circumference capping coil.Board member upwards is being divided into two sections week.The periphery of coil places between these two sections.In this structure, the circumference periphery of board member and incomplete capping coil.So the thickness of board member need be increased fully to guarantee to pass the magnetic flux of board member.As a result, the weight of increasing of injection valve possibility volume and injection valve may increase.The shape of the axial end portion of board member may differ from one another, because the periphery of the shape of the shape of axial end portion and coil and coil limits accordingly.So, when board member is assembled into coil, need pre-determine the direction of board member with respect to coil.In addition, board member needs soldered or bonds to coil.As a result, the manpower of the manufacturing work of injection valve increases.
According to US-5,158,236 (JP-A-3-31570), housing forms columnar substantially member by magnetic material.In the structure of US ' 236, the thickness of housing is even basically.
But this circle tube member is to have projection and recessed complicated shape, and wherein the many places diameter of cylindrical shape part differs from one another.So the manufacture process of circle tube member is very complicated, and the manpower increase of making circle tube member.In addition, circle tube member need be such as the technique for fixing of welding and crimping.As a result, it is complicated that the structure of injection valve becomes, and the manpower of assembling circle tube member increases.
Summary of the invention
Consider above-mentioned and other problems, the purpose of this invention is to provide a kind of injection valve that can assemble easily.Another object of the present invention provides a kind of method of making this injection valve.
According to an aspect of the present invention, injection valve comprises the coil that produces magnetic when being powered.Injection valve also comprises columnar substantially housing.Described housing is to the periphery of small part around described coil.Described housing has first axial end portion and second axial end portion.On the opposition side that axially is positioned at described second axial end portion of described first axial end portion with respect to described housing.Described housing is formed by magnetic material.Described injection valve also comprises the fixedly core of the radially inner side that is positioned at described coil.Described injection valve also comprises the removable core of the radially inner side that is positioned at described coil.Described removable core is relative with described fixedly core.Described removable core is by attracteding to described fixedly core by described coil at described removable core and the magnetic pull that fixedly produces between the core.Described injection valve also comprises valve, and it can be with described removable core moving axially with respect to described valve.Described injection valve also comprise with described housing dividually, the support that forms by magnetic material.Described support is connected with first axial end portion of described housing.Described support holds described valve.Described injection valve also comprise with described housing and described support dividually, the lid that forms by magnetic material.Described lid is connected with second axial end portion of described housing.
Alternatively, injection valve comprises the coil with first axial end portion and second axial end portion.Described coil produces magnetic flux when being powered.Described injection valve also comprises columnar substantially housing.Described housing is to the periphery of small part around described coil.Described housing is formed by magnetic material.Described injection valve also comprises the fixedly core of the radially inner side that is positioned at described coil.Described injection valve also comprises the removable core of the radially inner side that is positioned at described coil.Described removable core is relative with described fixedly core.Described removable core is by attracteding to described fixedly core at described removable core and the magnetic pull that fixedly produces between the core.Described injection valve also comprises valve, its fuel injection by interrupting with respect to moving axially of described valve with described removable core carrying out through nozzle bore.Described injection valve also comprise with described housing dividually, the support that forms by magnetic material.First axial end portion of the described coil of described support capping.Described injection valve also comprise with described housing and described fixedly core dividually, the lid that forms by magnetic material.Described cap seal covers second axial end portion of described coil.
Alternatively, a kind of method of making injection valve comprises removable core is assembled into the support that holds valve, makes described removable core to move axially with respect to described support with described valve.Described method also comprises fixing core is assembled into described support.Described method comprises that also housing extruding is inserted into described support makes described housing around the periphery of described fixedly core, thereby described housing and described fixedly core limit the space betwixt.Described method also comprises to be inserted columnar substantially coil in the described space.Described method also is included in will be covered extruding and be inserted into described housing on the opposition side of described support.
Alternatively, a kind of method of making injection valve comprises that the described valve that makes in interior week that valve is inserted support can be in described support axially moves.Described method also comprises removable core is assembled into described support, makes described removable core to move axially with respect to described support with described valve.Described method also comprises fixing core is assembled into described support.Described method also comprises first axial end portion of housing and any extruding in second axial end portion is inserted into described support, make described housing around the periphery of described fixedly core, thereby described housing and described fixedly core limits the space betwixt.Described method also comprises to be inserted columnar substantially coil in the described space.Described method also is included in will be covered extruding and be inserted into first axial end portion of described housing and in second axial end portion another on the opposition side of described support.
Description of drawings
From the following detailed description that the reference accompanying drawing is done, above-mentioned and other purposes of the present invention, feature and advantage will become clearer.In the accompanying drawing:
Fig. 1 is according to first embodiment, vertical partial sectional view of injection valve is shown;
Fig. 2 is the plan view when the arrow II from Fig. 1 observes;
Fig. 3 is according to first embodiment, the longitudinal sectional view of the core assembly of injection valve is shown;
Fig. 4 is according to first embodiment, the longitudinal sectional view that is assembled into the housing on the core assembly is shown;
Fig. 5 is according to first embodiment, the longitudinal sectional view that is assembled into the coil block on the core assembly is shown;
Fig. 6 is according to first embodiment, the longitudinal sectional view that is assembled into the lid on core assembly and the coil block is shown;
Fig. 7 A to 7F is according to first embodiment's improvement, the longitudinal sectional view of oil spout valve housing is shown;
Fig. 8 is according to second embodiment, vertical partial sectional view of injection valve is shown;
Fig. 9 is the side view when arrow IX from Fig. 8 observes;
Figure 10 is according to the 3rd embodiment, vertical partial sectional view of injection valve is shown;
Figure 11 is the side view when arrow XI observes from Figure 10; With
Figure 12 is according to alternate embodiment, vertical partial sectional view of injection valve is shown.
Embodiment
(first embodiment)
As shown in Figure 1, 2, injection valve (oil sprayer) 10 is applied to the petrol engine such as direct fuel-injection engine or suction port direct fuel-injection engine.Oil sprayer 10 can be applied to diesel engine.
Fixedly the end of core 12 on the opposition side of fuel filler 16 contacts with non-magnetic member 20, and non-magnetic member 20 forms the primary circle tubular by nonmagnetic substance.The end of non-magnetic member 20 on the opposition side of fixing core 12 is connected with support 30, and its medium-height trestle 30 forms the primary circle tubular by magnetic material.The end of support 30 on the opposition side of fixing core 12 accommodates valve body 31.Fixedly core 12 and non-magnetic member 20 by the welding etc. be connected to each other.Non-magnetic member 20 and support 30 by the welding etc. be connected to each other.Magnet short-cut path takes place between fixedly core 12 that 20 restrictions of non-magnetic member are formed by magnetic material and the support 30.
Valve body 31 is the primary circle tubular.Valve body 31 is fixed to support 30 inside by extruding insertion, welding etc.Valve body 31 has conical substantially inner wall surface, and its internal diameter reduces towards valve body 31 tops.The inner wall surface of valve body 31 limits valve seat 32.The end of valve body 31 on the opposition side of fixing core 12 is provided with spray nozzle board 33.Spray nozzle board 33 has at least one nozzle bore 34, and wherein nozzle bore 34 is the through holes that extend on the thickness direction basically of spray nozzle board 33.This at least one nozzle bore 34 is communicated with the inside of valve body 31 and the outside of valve body 31.The quantity of at least one nozzle bore 34 can be one, also can be equal to or greater than two.
The end of removable core 22 on fixing core 12 1 sides contacts with spring 26.Spring 26 is as the pushing member.One end of spring 26 contacts with removable core 22.The other end of spring 26 contacts with adjutage 28.The pushing member is not limited to spring 26.The pushing member for example can be sheet spring, gas damper or liquid condenser.Adjutage 28 was extruded in the interior week that is inserted into fixing core 12.The extruding insertion amount of adjutage 28 can be changed, and makes the power that is applied to spring 26 to be conditioned.Spring 26 extends axially, so spring 26 produces axial push power.Pin 40 that integrates and removable core 22 are urged and make hermetic unit 42 be placed on the valve seat 32 by spring 26.
Fixedly the periphery of core 12 is provided with coil block 50.Coil block 50 is made of coil 51, molded component 52 and connector 53 molded and that integrate.Coil 51 wherein is coated with the resin that forms molded component 52 in periphery and interior week for to have the cylindrical shape basically in periphery and interior week.The circumferencial direction of coil 51 relative fixed cores 12 is continuously around the fixing periphery of core 12.Molded component 52 and connector 53 are formed by resin.Coil 51 is electrically connected with the terminal 55 of connector 53 via wiring member 54.
The outer periderm housing 60 of coil 51 around, housing 60 forms the primary circle tubular by the magnetic material such as iron-bearing materials.Housing 60 is formed integrally as on circumference seamless, so the circumferencial direction of housing 60 relative coils 51 is continuously along the circumferential direction around the periphery by the coil 51 of molded component 52 cappings.In this structure, when coil 51 is powered, can fully guarantee magnetic flux, so housing 60 can be formed by thin-walled around coil 51.Therefore, housing 60 can reduce size, and the weight of housing 60 can reduce.Housing 60 is the primary circle tubular, and this is simple shape.Especially, the axial end portion of housing 60 (first and second axial end portions) 60A, 60B are simple shape, and it does not have projection and recessed.So housing 60 can form easily, therefore can reduce the manufacturing work of housing 60.
In addition, housing 60 is a primary circle tubular seamless on circumference.So housing 60 can be by formation easily such as press formings.
The first axial end portion 60A of housing 60 on support 30 1 sides contacts with the support step 35 of support 30, the feasible position that limits housings 60 with respect to support 30.Support 30 capping coils 51 and housing 60 both ends on nozzle bore 34 1 sides.Support 30 is substantially the same with the internal diameter of housing 60 with respect to the external diameter of the part of support step 35 on fixing core 12 1 sides, so housing 60 can be extruded and is inserted on the support 30.
In this structure, by housing 60 extruding are inserted into support 30, the circumferencial direction of housing 60 relative supports 30 closely contacts with support 30 continuously.So the support 30 that is formed by magnetic material is connected with housing 60 magnetic.
The second axial end portion 60B of housing 60 on the opposition side of support 30 is connected with lid 70.Cover 70 casings 60 and coil 51 both ends on the opposition side of support 30.Lid 70 forms the primary circle tubular by the magnetic material such as iron-bearing materials.Lid 70 has integrally formed neck 71 and head 72.Neck 71 is between the interior week of the periphery of fixing core 12 and housing 60.The internal diameter of neck 71 is substantially the same with the external diameter of fixing core 12.The external diameter of neck 71 is substantially the same with the internal diameter of housing 60.In this structure, lid 70 neck 71 can be extruded and be inserted into fixedly between the core 12 and housing 60.Lid 70 is extruded and is inserted into fixedly between the core 12 and housing 60.So lid interior week of 70 closely contacts with fixing core 12, closely contact with housing 60 and cover 70 periphery.Therefore, the fixedly core 12 that is formed by magnetic material is connected via lid 70 magnetic with housing 60.
The external diameter of head 72 is greater than the external diameter of neck 71.Attachment portion between head 72 and the neck 71 limits builds step 77.The lid step 77 that housing 60 forms on neck 71 1 sides on the second axial end portion 60B on the opposition side of support 30 and head 72 contacts.Housing 60 contacts with lid 70 by this way, promptly makes to limit the position of housing 60 on support 30 opposition sides with respect to lid 70.Head 72 has end face 73 on the opposition side of neck 71.The end face 73 of head 72 is flat substantially.For example when oil sprayer 10 was pressed against on the motor, oil sprayer 10 can use the pushing member such as spring to be applied in pushing force via the head 72 of lid 70.
As shown in Figure 2, lid 70 has the opening 74 that forms along the circumference part of covering 70 substantially, makes that covering 70 is essentially discontinuous C shape on circumference.The connector 53 of coil block 50 is arranged in opening 74, make cover 70 can be away from connector 53.
Below, with the manufacture process of explanation oil sprayer 10.
As shown in Figure 3, fixedly core 12, non-magnetic member 20 and support 30 are assembled into each other in advance and go up.Particularly, support 30 holds valve body 31, spray nozzle board 33, removable core 22 and pin 40.Removable core 22 and pin 40 are integrally connected to each other by extruding insertion, welding etc.Fixedly core 12 waits by welding and is fixed to non-magnetic member 20.Non-magnetic member 20 waits by welding and is fixed to support 30.
As shown in Figure 4, housing 60 is set to the fixedly core 12 that assembles, non-magnetic member 20 and support 30.Particularly, housing 60 is extruded the periphery that is inserted into support 30, makes housing 60 from fixing core 12 intended distance separately diametrically.Fixedly limit space 36 between core 12 and the housing 60.Housing 60 is extruded to insert and makes the first axial end portion 60A of housing 60 on support 30 1 sides contact with the support step 35 of support 30.Housing 60 at the first axial end portion 60A on support 30 1 sides and the housing 60 second axial end portion 60B on lid 70 1 sides with respect to symmetric points substantial symmetry as the axial centre of housing 60.In other words, at the second axial end portion 60B of the housing 60 of Fig. 4 upside with in the first axial end portion 60A substantial symmetry of the housing 60 of Fig. 4 downside, and has the shape that is equal to.In this structure, each among the first and second axial end portion 60A, the 60B of housing 60 can be pushed and is inserted into support 30.So, when housing 60 is extruded insertion, do not need to confirm the direction of housing 60 with respect to support 30.So, can help the assembly working of housing 60.
As shown in Figure 5, coil block 50 is attached to support 30 and the housing 60 that assembles.Particularly, as described in reference Fig. 4,, fixedly limiting space 36 between core 12 and the housing 60 by housing 60 is assembled into support 30.With reference to Fig. 5, the coil 51 of coil block 50 is inserted in the space of describing among Fig. 4 36.More specifically, coil block 50 inserts from fixing core 12 end on valve body 31 opposition sides, makes coil block 50 be positioned on the outer circumferential side of fixing core 12.The coil 51 of coil block 50 is inserted in fixedly between the core 12 and housing 60, so coil block 50 is supported in fixedly between the core 12 and housing 60.The coil 51 of coil block 50 and support 30 end on fixing core 12 1 sides contacts, therefore with respect to the position that axially defines coil block 50 of oil sprayer 10.
In said structure, the coil 51 of coil block 50 is inserted into fixedly in the space 36 between the core 12 and housing 60.So housing 60 does not need distortion to hold coil block 50.
As shown in Figure 6, lid 70 is attached on the coil block 50 that is assembled to fixedly core 12 and housing 60.Lid 70 is extruded and is inserted into the second axial end portion 60B of housing 60 on support 30 opposition sides, makes to cover 70 fixedly between core 12 and the housing 60.Lid 70 is extruded to insert and makes head 72 contact with the second axial end portion 60B of housing 60 on support 30 opposition sides.Therefore, the second axial end portion 60B of housing 60 on spray nozzle board 33 opposition sides is by lid 70 supportings.Housing 60 contacts with the head 72 of lid 70, makes housing 60 be limited to move to the opposition side of spray nozzle board 33.
Insert week in the housing 60 at edge and cover the shearing force that applied between 70 peripheries and can cover 70 and the second axial end portion 60B of housing 60 is abutted against to cover is reduced on 70 limiting extruding by the extruding insertion; This is with housing 60 extruding to be inserted into support 30 similar.As a result, do not need the axial mechanical strength that strengthens housing 60 and cover the contact segment between 70, therefore can help the size Control and the intensity management of housing 60 and lid 70.
As described in reference Fig. 1, cover after 70 in assembling, spring 26 is inserted into the fixedly interior week of core 12.Adjutage 28 is extruded on the opposition side of removable core 22 with respect to spring 26 and inserts fixedly core 12, makes the compressive force of spring 26 be conditioned.After the compressive force of Regulation spring 26, filter 18 is attached to the fixedly end of core 12 on support 30 opposition sides.Therefore, oil sprayer 10 can be assembled by above-mentioned manufacture process.In the above-mentioned manufacture process of oil sprayer 10, such as housing 60, coil block 50 with cover 70 parts can be assembled into basically identical respectively from the opposition side of support 30 direction.So these parts do not need to overturn in the axial direction, and in the manufacture process of oil sprayer 10, do not need to tilt.So, can help the manufacture process of oil sprayer 10, and can reduce the manufacturing work of oil sprayer 10.
In the above-mentioned manufacture process of oil sprayer 10, housing 60 be extruded be inserted into support 30 after, housing 60 is soldered to support 30.Lid 70 be extruded be inserted into fixedly between the core 12 and housing 60 after, housing 60 is soldered to and covers 70.In these structures, can further strengthen the intensity of extruding insertion portion by welding extruding insertion portion.
But housing 60 does not need to be soldered to support 30 and/or covers 70.
In said structure, coil 51 by housing 60, support 30 and cover 70 around.Two axial end portions of housing 60 wound coils 51, so housing 60 does not need to be bent, welding waits to combine with coil 51.Housing 60 is a simple shape, and housing 60 does not need to be formed with coil 51 corresponding than complicated shape.So, can help the assembly working of housing 60 and coil 51, housing 60 has simple shape simultaneously.
The following describes the operation of oil sprayer 10.
As described in reference Fig. 1, when the electric current that is fed to coil 51 stopped, fixedly core 12 and removable core 22 did not produce magnetic pull betwixt.Under this situation, the pushing force of removable core 22 by spring 26 separated from fixing core 12, so the hermetic unit 42 of the pin 40 that integrates with removable core 22 is placed to valve seat 32.Therefore, fuel oil does not spray by nozzle bore 34.
When electricity was fed to coil 51, by the magnetic that produces in the coil 51, magnetic flux flow was crossed by housing 60, support 30, removable core 22, fixing core 12 and cover 70 magnetic loops that constitute.Under this situation, the fixedly core 12 and the removable core 22 that are separated from each other produce magnetic pull betwixt.When this magnetic pull became pushing force greater than spring 26, removable core 22 and pin 40 moved towards fixing core 12 integratedly, make the hermetic unit 42 of pin 40 lift from valve seat 32.
Fuel oil from fuel filler 16 by filter 18, the fixing fuel gallery 44 on the radially inner side of the interior side inflow pin 40 of the inboard of the fuel gallery 14 the core 12, adjutage 28 and removable core 22.Fuel oil further flows into fuel gallery 24 on the radial outside of pins 40 by the fuel gallery 44 of fuel oil port 45,46,47 from the radially inner side of pin 40.The fuel oil that flows in the fuel gallery 24 is injected by nozzle bore 34 behind the gap between the pin 40 that passes through valve body 31 and lift from valve seat 32.
When stop supplies electric current during to coil 51, fixedly the magnetic pull between core 12 and the removable core 22 is eliminated.Under this situation, removable core 22 that integrates and pin 40 move to the fixedly opposition side of core 12 by the pushing force of spring 26, make the hermetic unit 42 of pin 40 be placed to once more on the valve seat 32.Therefore, stop fuel injection by nozzle bore 34.
(improvement)
Shown in Fig. 7 A to 7F, the shape of housing 61 to 66 can be carried out various improvement according to the value of shape around the shape of coil 51, the coil 51 and/or the magnetic by housing 61 to 66.
In the housing 61 to 66 shown in Fig. 7 A to 7F each all has first axial end portion that extruding is inserted into support 30.In the housing 61 to 66 each all has to push to be inserted into covers 70 second axial end portion.The internal diameter of first axial end portion of each and external diameter are substantially equal to the internal diameter and the external diameter of second axial end portion of each in the housing 61 to 66 respectively in the housing 61 to 66.
In the housing 61 to 66 each on support 30 1 sides the first axial end portion 60A and each in the housing 61 to 66 be longitudinal center's (it is each a symmetry axis in the housing 61 to 66) substantial symmetry with respect to axial centre at lid second axial end portion 60B on 70 1 sides.So, when housing 61 each in 66 is extruded when inserting, do not need to confirm each the direction in the housing 61 to 66 with respect to support 30.So, can help the assembly working of housing 61 to 66.
(second embodiment)
Shown in Fig. 8,9, to compare with first embodiment's structure, the connector 53 of coil block 50 is positioned on support 30 1 sides.So, to compare with first embodiment's structure, the connector 53 of coil block 50 is positioned on support 30 1 sides with respect to the end of housing 60 on lid 70 1 sides.End and the connector 53 of housing 60 on lid 70 1 sides has opening 68 accordingly.30 parts of extending form opening 68 by partly removing from housing 60 from the second axial end portion 60B of housing 60 on support 30 opposition sides towards support.In this structure, coil block 50 can be easily be inserted into the interior week of housing 60 from the opposition side of support 30.Opening 68 can pass housing 60 in axially middle part formation.
(the 3rd embodiment)
As shown in figure 10, housing 60 is positioned at the radially most peripheral around support 30.Support 30 does not have the support step 35 (Fig. 1) that illustrates among first embodiment.The end face of housing 60 on nozzle bore 34 1 sides do not contact with support 30.In this structure, housing 60 is the periphery of complete capping support 30 basically.Lid 75 is set to the opposition side of support 30 with respect to housing 60.Lid 75 end faces 76 that have on the opposition side of support 30.Lid 75 end face 76 is positioned at the substantially the same axial position of axial position with the end face of housing 60 on support 30 opposition sides with respect to housing 60.In other words, the end face of the second axial end portion 60B of the end face 76 of lid 75 and housing 60 for example forms flat basically surface.In this structure, cover 75 whole extruding and be inserted into fixedly between the core 12 and housing 60.In this embodiment, can reduce support 30 and cover the projection in 75 and be recessed into, therefore can simplify support 30 and the shape of covering 75.Therefore, can help the manufacturing work of support 30 and lid 75, the feasible manufacture cost that can reduce oil sprayer.
(alternate embodiment)
As shown in figure 11, housing 60 can have slit 69, and this slit 69 is formed in the periphery of housing 60 partly with respect to the circumferencial direction of housing 60.Slit 69 communicates with each other the first and second axial end portion 60A, the 60B of housing 60.In this structure, the magnetic loop that forms in the housing 60 is disconnected by slit 69, therefore can limit eddy current and upwards occur in week by housing 60.So, can reduce the magnetic of generation in the housing 60 by stop supplies fast to the electric current of coil 51, so can reduce remaining magnetic fast.As a result, the fixedly magnetic pull between the core 12 and movable direction 22 can be eliminated fast, therefore pin 40 can be strengthened with respect to the responsiveness of stopping power supply.
In this structure, the stitching thread of housing 60 needs not be the basic lineal shape with the parallel axes of housing 60.The stitching thread of housing 60 can be to have in projection that upwards is engaged with each other in week and recessed shape.Axial middle part from one of axial end portion of housing 60 to housing 60 forms can slit 69.Two axial end portions of slit 69 can make slit 69 become the window-shaped basically that is centered on by two sealing axial end portions in the axial direction in the sealing that makes progress in week.
As shown in figure 12, the fuel oil connector 19 that wherein limits fuel gallery 14 can be set to fixedly core 12 extraly, only replaces to use fixedly that core 12 limits fuel gallery 14.
Support can the capping coil first axial end portion.Lid can second axial end portion of capping coil on the axial opposed side of first axial end portion of coil.
The structure of the foregoing description can make up in appropriate circumstances.
Should recognize, though the process that the embodiment of the invention has been described herein for comprising particular order, undocumented herein other alternate embodiments of various other orders and/or extra order that comprise also are intended to be included in the scope of the present invention's order.
Without departing from the spirit of the invention, can differently carry out multiple improvement and variation to the foregoing description.
Claims (17)
1. an oil sprayer (10) is characterized in that comprising:
When being powered, produce the coil (51) of magnetic;
Substantially columnar housing (60,61,62,63,64,65,66), described housing (60,61,62,63,64,65,66) to the periphery of small part around described coil (51), described housing (60,61,62,63,64,65,66) have first axial end portion (60A) and second axial end portion (60B), described first axial end portion (60A) is with respect to described housing (60,61,62,63,64,65,66) on the opposition side that axially is positioned at described second axial end portion (60B), described housing (60,61,62,63,64,65,66) form by magnetic material;
Be positioned at the fixedly core (12) of the radially inner side of described coil (51);
Be positioned at the removable core (22) of the radially inner side of described coil (51), described removable core (22) is relative with described fixedly core (12), and described removable core (22) is by attracteding to described fixedly core (12) by described coil (51) at described removable core (22) and the magnetic pull that fixedly produces between the core (12);
Valve (40), it can be with described removable core (22) moving axially with respect to described valve (40);
With described housing (60,61,62,63,64,65,66) dividually, the support (30) that forms by magnetic material, described support (30) is connected with first axial end portion (60A) of described housing (60,61,62,63,64,65,66), and described support (30) holds described valve (40); With
With described housing (60,61,62,63,64,65,66) and described support (30) both dividually, by the lid (70,75) that magnetic material forms, described lid (70,75) is connected with second axial end portion (60B) of described housing (60,61,62,63,64,65,66).
2. oil sprayer according to claim 1 (10) is characterized in that:
The inside of described support (30) is to be connected with the outside of described support (30) by nozzle bore (34), and
The fuel injection of described valve (40) by interrupting with respect to moving axially of described valve (40) with described removable core (22) carrying out through described nozzle bore (34).
3. oil sprayer according to claim 1 and 2 (10) is characterized in that:
Described coil (51) places between described housing (60,61,62,63,64,65,66) and the described fixedly core (12).
4. oil sprayer according to claim 1 and 2 (10) is characterized in that:
Described valve (40) can be in described support (30) axially move and
Described housing (60,61,62,63,64,65,66) places between described support (30) and the lid (70,75).
5. oil sprayer according to claim 4 (10) is characterized in that:
Described lid (70) has the lid step (77) that limits the position in week in the described housing (60,61,62,63,64,65,66).
6. oil sprayer according to claim 4 (10) is characterized in that:
Described support (30) has the support step (35) that limits the position in week in the described housing (60,61,62,63,64,65,66).
7. oil sprayer according to claim 1 and 2 (10) is characterized in that:
Described first axial end portion (60A) has interior week, and internal diameter in interior week of the internal diameter in week and described second axial end portion (60B) is basic identical in this.
8. oil sprayer according to claim 1 and 2 (10) is characterized in that:
Described support (30) has periphery, and the external diameter of the external diameter of this periphery and described lid (70,75) periphery is basic identical.
9. oil sprayer according to claim 1 and 2 (10) is characterized in that:
Described housing (60,61,62,63,64,65,66) with respect to described housing (60,61,62,63,64,65,66) axially have axial centre and
Described housing (60,61,62,63,64,65,66) is symmetrical substantially with respect to the axial centre of described housing (60,61,62,63,64,65,66).
10. oil sprayer according to claim 1 and 2 (10) is characterized in that:
Described first axial end portion (60A) and second axial end portion (60B) have the shape that is equal to substantially each other respectively.
11. oil sprayer according to claim 1 and 2 (10) is characterized in that:
Described lid (70,75) has the circumferential surface of band opening (68,74).
12. oil sprayer according to claim 1 and 2 (10) is characterized in that:
Described housing (60,61,62,63,64,65,66) forms and is seamless.
13. oil sprayer according to claim 1 and 2 (10) is characterized in that:
Described lid (70,75) has the circumferential surface of band slit (69).
14. oil sprayer according to claim 13 (10) is characterized in that:
Described slit (69) extends to second axial end portion (60B) from first axial end portion (60A).
15. an oil sprayer (10) is characterized in that comprising:
Coil (51) with first axial end portion and second axial end portion, described coil (51) produces magnetic flux when being powered;
Substantially columnar housing (60,61,62,63,64,65,66), described housing (60,61,62,63,64,65,66) is to the periphery of small part around described coil (51), and described housing (60,61,62,63,64,65,66) is formed by magnetic material;
Be positioned at the fixedly core (12) of the radially inner side of described coil (51);
Be positioned at the removable core (22) of the radially inner side of described coil (51), described removable core (22) is relative with described fixedly core (12), and described removable core (22) is by attracteding to described fixedly core (12) at described removable core (22) and the magnetic pull that fixedly produces between the core (12);
Valve (40), its fuel injection by interrupting with respect to moving axially of described valve (40) with described removable core (22) carrying out through nozzle bore (34);
With described housing (60,61,62,63,64,65,66) dividually, the support (30) that forms by magnetic material, first axial end portion of the described coil of described support (30) capping (51); With
With described housing (60,61,62,63,64,65,66) and described fixedly core (12) both dividually, the lid (70,75) that forms by magnetic material, second axial end portion of the described lid described coil of (70,75) capping (51).
16. the method for a manufacturing oil sprayer (10), described method is characterised in that and comprises:
Removable core (22) is assembled on the support (30) that holds valve (40), makes described removable core (22) to move axially with respect to described support (30) with described valve (40);
Fixedly core (12) is assembled into described support (30);
Housing (60,61,62,63,64,65,66) extruding is inserted into described support (30), make described housing (60,61,62,63,64,65,66) around the periphery of described fixedly core (12), thereby described housing (60,61,62,63,64,65,66) and described fixedly core (12) limit space (36) between the two at it;
Substantially columnar coil (51) is inserted in the described space (36); With
On the opposition side of described support (30), will cover (70,75) extruding and be inserted into described housing (60,61,62,63,64,65,66).
17. the method for a manufacturing oil sprayer (10), described method is characterised in that and comprises:
With the interior week that valve (40) inserts support (30), make described valve (40) in described support (30), axially to move;
Removable core (22) is assembled into described support (30), makes described removable core (22) to move axially with respect to described support (30) with described valve (40);
Fixedly core (12) is assembled into described support (30);
First axial end portion (60A) of housing (60,61,62,63,64,65,66) and any extruding in second axial end portion (60B) are inserted into described support (30), make described housing (60,61,62,63,64,65,66) around the periphery of described fixedly core (12), thereby described housing (60,61,62,63,64,65,66) and described fixedly core (12) limit space (36) between the two at it;
Substantially columnar coil (51) is inserted in the described space (36); With
Be inserted into first axial end portion (60A) of described housing (60,61,62,63,64,65,66) and in second axial end portion (60B) another will covering (70,75) extruding on the opposition side of described support (30).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP166637/2005 | 2005-06-07 | ||
| JP2005166637 | 2005-06-07 | ||
| JP120662/2006 | 2006-04-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1877111A CN1877111A (en) | 2006-12-13 |
| CN100494665C true CN100494665C (en) | 2009-06-03 |
Family
ID=37509637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100935599A Expired - Fee Related CN100494665C (en) | 2005-06-07 | 2006-06-06 | Injection valve and manufacturing method for the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100494665C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454273A (en) * | 2014-11-15 | 2015-03-25 | 柳州市莫尔斯汽配制造有限公司 | Oil sprayer |
| JP6591055B2 (en) * | 2016-05-12 | 2019-10-16 | 三菱電機株式会社 | Fuel injection valve |
| DE102016208288A1 (en) * | 2016-05-13 | 2017-11-16 | Robert Bosch Gmbh | Injector with improved magnetic actuator |
-
2006
- 2006-06-06 CN CNB2006100935599A patent/CN100494665C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1877111A (en) | 2006-12-13 |
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Granted publication date: 20090603 Termination date: 20100606 |