EP2747095A2 - Solenoid valve and method for producing a solenoid valve - Google Patents

Solenoid valve and method for producing a solenoid valve Download PDF

Info

Publication number
EP2747095A2
EP2747095A2 EP13191453.3A EP13191453A EP2747095A2 EP 2747095 A2 EP2747095 A2 EP 2747095A2 EP 13191453 A EP13191453 A EP 13191453A EP 2747095 A2 EP2747095 A2 EP 2747095A2
Authority
EP
European Patent Office
Prior art keywords
solenoid valve
ring
magnet
pole ring
armature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13191453.3A
Other languages
German (de)
French (fr)
Other versions
EP2747095B1 (en
EP2747095A3 (en
Inventor
Michael Krause
Lars Olems
Matthias Horn
Andreas Rettich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2747095A2 publication Critical patent/EP2747095A2/en
Publication of EP2747095A3 publication Critical patent/EP2747095A3/en
Application granted granted Critical
Publication of EP2747095B1 publication Critical patent/EP2747095B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
    • F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for

Definitions

  • the invention relates to a solenoid valve according to the preamble of claim 1. Furthermore, the invention relates to a method for producing a solenoid valve according to the invention.
  • Such a solenoid valve is out of DE 10 2010 030 600 A1 the applicant known.
  • the known solenoid valve has a magnet assembly with a magnetic coil which is arranged in a magnetic core, which in turn is accommodated in a magnet sleeve, which forms a carrier element for the magnetic core.
  • a residual air gap disc for adjusting a residual air gap is arranged in the usual manner between the magnetic core and the armature.
  • the disadvantage here is that for adjusting the residual air gap thus an additional component (residual air gap disc) is required, which increases the assembly and production costs.
  • residual air gap disc causes an increase in the number of contact surfaces on which deposits may possibly deposit, which may affect the function of the solenoid valve over the life considered.
  • residual air gap disks only certain, defined residual air gaps can be set, which result from the thickness of the residual air gap disks.
  • the invention has the object, a solenoid valve according to the preamble of claim 1 such that an improved adjustment of the residual air gap with a reduced number of components and increased robustness of the Solenoid valve, in particular against deposits is achieved.
  • This object is achieved in a solenoid valve with the features of claim 1, characterized in that the carrier element, in which the magnet assembly is arranged with its magnetic core, is designed as a stop element, which serves to establish or formation of the residual air gap.
  • the carrier element has on the side facing the magnet armature a preferably radially circumferential first area and a second area axially added in relation to the first area in the direction of the magnetic core.
  • the first region forms the abutment surface for the magnet armature, and in the case of the armature adjoining the first region, the residual air gap is formed between the end face or end face of the magnet armature and the second region.
  • Solenoid valves are already known from the prior art, in which the magnetic coil is encapsulated, ie, is arranged protected from the entry of fuel or the like.
  • the support element consists of an inner pole ring and an outer pole ring, which are arranged concentrically to each other and which are connected to a non-magnetic intermediate element or a ring, such that the Carrier element on the side facing away from the magnet armature forms a receiving space for the magnet assembly that is hydraulically separated from a magnet armature space.
  • Such a design of the carrier element can be advantageously carried out manufacturing technology and also avoids the access of fuel to the region of the magnetic coil by the separation of the two spaces.
  • the residual air gap can be formed by the two areas being formed by depressions on the inner pole ring and / or on the outer pole ring and / or on the intermediate element, the size of the residual air gap being set by the dimension of the depression.
  • the intermediate element consists of solder material or of plastic, and that the depressions are produced by a machining operation, in particular by grinding.
  • the intermediate element is designed as a metal ring which is welded to the inner pole ring and the outer pole ring.
  • Such welding is preferably carried out by means of a laser beam welding device, which enables high-precision welds even on relatively small components and can also be monitored in terms of process technology.
  • a further preferred embodiment of the invention in which the effective pole face of the outer pole ring and / or the inner pole ring can be enlarged, suggests that the metal ring is arranged in coincidence with the end face of the magnet coil facing the metal ring and has a smaller width than the end face of the magnet ring magnetic coil.
  • the inner pole ring and / or the outer pole ring projects with a radial circumference into the region of the magnet coil, whereby the magnetic flux is amplified.
  • the mentioned metal ring can serve, for which purpose it projects beyond the end face of the inner pole ring and the outer pole ring on the side facing the magnet armature. If it is manufac-turing to position it precisely enough for the inner pole ring and the outer pole ring during welding, a mechanical material removal can thus be dispensed with.
  • the characteristic of the solenoid valve or of the residual air gap can also be influenced via a structured end face of the magnet armature on the side facing the magnet coil. Therefore it is in one further embodiment of the invention that the magnet armature on the side facing the magnetic core has a structured end face, in particular in the form of at least one annular peripheral step. Thus, in particular concentrically formed regions are formed on the end face of the magnet armature, which have different distances from the magnet core or the magnet coil.
  • the invention also includes a method for producing a solenoid valve according to the invention. It is provided that the residual air gap is adjusted by a material removal on a magnetic core and the magnetic coil receiving carrier element or by positioning a piece integrally connected to the carrier element ring. Such a method has the advantage that a highly accurate adjustment of the working air gap is made possible without the use of a separate component.
  • Fig. 1 1 is a detail of a solenoid valve 10 according to the invention, as it is preferably, but not restrictively, used as a component in a common rail injector 100 for injecting fuel into the combustion chamber of an internal combustion engine (not shown), in particular a self-igniting internal combustion engine.
  • the solenoid valve 10 serves to move up and down a valve member 11 shown only in its upper portion, which is pressed in the de-energized state by means of a compression spring 12 against a sealing seat, not shown.
  • the solenoid valve 10 When the solenoid valve 10 is energized, the valve member 11 lifts off from the sealing seat. This open position of the valve member 11 is in the Fig. 1 shown.
  • the actuation of the valve member 11 by means of a cross-hat-shaped armature 13, which is pressed with a sleeve-shaped portion 14 on the circumference of the valve member 11.
  • the sleeve-shaped section 14 is surrounded by a flat or plate-shaped magnet armature section 15.
  • the magnet armature 13 cooperates with a magnet assembly 18 which comprises a solenoid coil 20 which is electrically contacted via plug connection lugs 19 and which is arranged or embedded in a magnet core 21.
  • the magnet core 21 is arranged or accommodated together with the magnet coil 20 in a carrier element 25, which consists of a sleeve-shaped inner pole ring 26 and a sleeve-shaped outer pole ring 27.
  • the carrier element 25 is clamped by means of a union nut 23 axially with a valve housing body 24.
  • the two magnetic material elements of the carrier element 25 are connected to each other by means of a non-magnetic intermediate element 28.
  • the intermediate element 28 is preferably made of solder material and connects the inclined surfaces 29, 30 of the inner pole ring 26 and the outer pole ring 27 with each other.
  • a stepped bore 32 designed as a through-bore.
  • including the Magnetic armature 13 has at least one, but preferably a plurality of equally spaced angularly spaced through holes 33 which connects the stepped bore 32 with a magnetic armature space 34 hydraulically.
  • a receiving space 35 for the magnetic assembly 18 is formed by the carrier element 25 on the side opposite the magnet armature 13, which is sealed against the fuel-carrying areas of the injector 100.
  • the solenoid valve 10 When the solenoid valve 10 is energized, the magnet armature 13 is pulled in the direction of the magnet assembly 18 or the magnet coil 20, whereby the valve member 11 connected to the magnet armature 13 lifts off from its sealing seat and releases a fuel flow in the direction of the magnet armature space 34.
  • a second region 39 is formed, which is formed in the form of a recess 40.
  • the recess 40 is in the in the Fig. 1 and 2 illustrated embodiment on the magnet armature 13 facing end side of the inner pole ring 26 and the intermediate member 28, and formed in a small portion of the outer pole ring 27.
  • the geometric dimensioning of the recess 40 determines the size of the residual air gap 36. According to the invention, it is provided that the recess 40 is formed or adjusted by a machining operation, in particular by grinding.
  • a modified embodiment of the invention in which the residual air gap 36 is formed by a recess 40a, which is formed in the region of the outer pole ring 27, the intermediate member 28, and a small portion of the inner pole ring 26.
  • annular recesses 40b, 40c in the region of the inner pole ring 26 and the outer pole ring 27 are formed.
  • the annular raised portion 41 of the intermediate member 28a forms the stopper member for the armature 13.
  • Fig. 5 is one opposite the Fig. 4 illustrated modified embodiment in which the intermediate element 28b in the region of the outer pole ring 27, the end face 38 of the magnet armature 13 covers.
  • the recess 40d is formed substantially only in the region of the inner pole ring 26.
  • the intermediate element 28b also completely covers the region of the inner pole ring 26 on the end face facing the magnet armature 13 (not shown).
  • the material of the intermediate element 28b forms the residual air gap 36 between the inner pole ring 26, the outer pole ring 27 and the magnet armature 13.
  • the intermediate element 28b edit accordingly or form in thickness according to the desired residual air gap 36.
  • Last is in the Fig. 6 a further embodiment of the invention shown in which the intermediate element 28, 28 a, 28 b according to the Fig. 1 to 5 is replaced by a metallic, non-magnetic ring 42.
  • the ring 42 is arranged in the illustrated embodiment in alignment with the magnetic coil 20 and has a smaller width than the magnetic coil 20. This means that the inner pole ring 26 and the outer pole ring 27, each with small surface portions 43, 44 in register with the end face of the magnetic coil 20 are.
  • the ring 42 protrudes beyond the inner and outer pole rings 27 via the respective planar end faces of the inner pole ring 26 and the outer pole ring 27 on the side facing the magnet armature 13, whereby the residual air gap 36 is determined by the measure. around which the ring 42 protrudes beyond the inner pole ring 26 and the outer pole ring 27.
  • the ring 42 is firmly and tightly connected to the inner pole ring 26 and the outer pole ring 27 by means of two weld seams 45, 46 arranged on the side of the magnetic coil 20, respectively.
  • the formation of the welds 45, 46 is preferably carried out by a laser beam welding device.
  • the magnet armature 13 may have a depression or step 47, for example in a radially inner region, so that the residual air gap 36 in the region of the step 47 is enlarged relative to a radially outer region of the magnet armature 13.
  • a surface structuring of the magnet armature 13 on the side facing the magnetic coil 20 also in the in the Fig. 1 to 5 illustrated embodiments is conceivable.
  • Such a surface structuring may be provided in the form of a single depression or in the form of several depressions. Their shape and arrangement is essentially dependent on the particular application.
  • Such structuring of the magnet armature 13 makes it possible to additionally influence or adjust the function of the residual air gap 36.
  • the ring 42 can be connected to the inner pole ring 26 and the outer pole ring 27 in a different manner, for example by gluing, instead of by welding. It is also conceivable to form the ring 42 in the form of a sheet metal part, which is connected by crimping with the inner pole ring 26, which is likewise designed as sheet metal parts, as well as outer pole ring 27. Finally, it is also conceivable to form the inner pole ring 26 and the outer pole ring 27 in the context of a powder metallurgical production. Such a powder metallurgy formation can take place by sintering or in the MIM process and comprises the use of at least two powdered materials having different magnetic properties. With regard to the intermediate element 28, it is mentioned that this can also be made of plastic and is formed by injection molding onto the inner pole ring 26 and the outer pole ring 27.

Abstract

The solenoid valve (10) has a magnet assembly (18) comprising a solenoid (20) and a magnetic core (21), in which the magnet assembly is arranged on a support element (25), and a movably arranged magnetic armature (13). The one end position of the movably arranged magnetic armature is determined by a stop element which is configured to adjust the residual air gap (36) and on which the armature rests, while the stop element is arranged on the support element. The support element is arranged facing one side of the magnetic armature. An independent claim is included for a method for manufacturing a solenoid valve.

Description

Stand der TechnikState of the art

Die Erfindung betrifft ein Magnetventil nach dem Oberbegriff des Anspruchs 1. Ferner betrifft die Erfindung ein Verfahren zum Herstellen eines erfindungsgemäßen Magnetventils.The invention relates to a solenoid valve according to the preamble of claim 1. Furthermore, the invention relates to a method for producing a solenoid valve according to the invention.

Ein derartiges Magnetventil ist aus der DE 10 2010 030 600 A1 der Anmelderin bekannt. Das bekannte Magnetventil weist eine Magnetbaugruppe mit einer Magnetspule auf, die in einem Magnetkern angeordnet ist, der wiederum in einer Magnethülse aufgenommen ist, die ein Trägerelement für den Magnetkern ausbildet. Um ein Anhaften bzw. Ankleben des Magnetankers in seiner einen Endlage zu verhindern, ist in üblicher Art und Weise zwischen dem Magnetkern und dem Magnetanker eine Restluftspaltscheibe zur Einstellung eines Restluftspalts angeordnet. Nachteilig dabei ist, dass zur Einstellung des Restluftspalts somit ein zusätzliches Bauelement (Restluftspaltscheibe) erforderlich ist, was den Montage- bzw. Fertigungsaufwand erhöht. Darüber hinaus bedingt die Verwendung einer Restluftspaltscheibe eine Erhöhung der Anzahl der Kontaktflächen, an denen sich ggf. Beläge ablagern können, die die Funktion des Magnetventils über die Lebensdauer betrachtet beeinträchtigen können. Zuletzt können mit derartigen Restluftspaltscheiben lediglich bestimmte, definierte Restluftspalte eingestellt werden, die sich aufgrund der Dicke der Restluftspaltscheiben ergeben.Such a solenoid valve is out of DE 10 2010 030 600 A1 the applicant known. The known solenoid valve has a magnet assembly with a magnetic coil which is arranged in a magnetic core, which in turn is accommodated in a magnet sleeve, which forms a carrier element for the magnetic core. In order to prevent sticking or adhesion of the armature in its one end position, a residual air gap disc for adjusting a residual air gap is arranged in the usual manner between the magnetic core and the armature. The disadvantage here is that for adjusting the residual air gap thus an additional component (residual air gap disc) is required, which increases the assembly and production costs. In addition, the use of a residual air gap disc causes an increase in the number of contact surfaces on which deposits may possibly deposit, which may affect the function of the solenoid valve over the life considered. Finally, with such residual air gap disks, only certain, defined residual air gaps can be set, which result from the thickness of the residual air gap disks.

Offenbarung der ErfindungDisclosure of the invention

Ausgehend von dem dargestellten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Magnetventil nach dem Oberbegriff des Anspruchs 1 derart weiterzubilden, dass eine verbesserte Einstellmöglichkeit des Restluftspalts bei verringerter Bauteilanzahl sowie eine erhöhte Robustheit des Magnetventils, insbesondere gegenüber Ablagerungen erzielt wird. Diese Aufgabe wird erfindungsgemäß bei einem Magnetventil mit den Merkmalen des Anspruchs 1 dadurch gelöst, dass das Trägerelement, in dem die Magnetbaugruppe mit seinem Magnetkern angeordnet ist, als Anschlagelement ausgebildet ist, das zur Festlegung bzw. Ausbildung des Restluftspalts dient. Mit anderen Worten gesagt bedeutet dies, dass auf die Verwendung eines separaten Bauteils (Restluftspaltscheibe) erfindungsgemäß verzichtet wird, indem durch eine entsprechende Geometrie bzw. Ausgestaltung des Trägerelements dieses in Art einer Restluftspaltscheibe wirkt, d.h., das dieses eine Anlagefläche für den Magnetanker in seiner der Magnetspule zugewandten Endposition ausbildet.Based on the illustrated prior art, the invention has the object, a solenoid valve according to the preamble of claim 1 such that an improved adjustment of the residual air gap with a reduced number of components and increased robustness of the Solenoid valve, in particular against deposits is achieved. This object is achieved in a solenoid valve with the features of claim 1, characterized in that the carrier element, in which the magnet assembly is arranged with its magnetic core, is designed as a stop element, which serves to establish or formation of the residual air gap. In other words, this means that the use of a separate component (residual air gap disc) is omitted according to the invention by acting through a corresponding geometry or design of the support element in the manner of a residual air gap disc, ie, this a contact surface for the armature in his Solenoid coil facing end position forms.

Vorteilhafte Weiterbildungen des erfindungsgemäßen Magnetventils sind in den Unteransprüchen aufgeführt.Advantageous developments of the solenoid valve according to the invention are listed in the subclaims.

Um das Anschlagelement an dem Trägerelement auszubilden, wird es vorgeschlagen, dass das Trägerelement auf der dem Magnetanker zugewandten Seite einen vorzugsweise radial umlaufenden ersten Bereich und einen im Bezug zum ersten Bereich in Richtung zum Magnetkern axial zugesetzten zweiten Bereich aufweist. Das bedeutet, dass der erste Bereich die erwähnte Anschlagfläche für den Magnetanker ausbildet, und dass bei an dem ersten Bereich anliegendem Magnetanker zwischen der Stirnfläche bzw. Stirnseite des Magnetankers und dem zweiten Bereich der Restluftspalt ausgebildet ist.In order to form the abutment element on the carrier element, it is proposed that the carrier element has on the side facing the magnet armature a preferably radially circumferential first area and a second area axially added in relation to the first area in the direction of the magnetic core. This means that the first region forms the abutment surface for the magnet armature, and in the case of the armature adjoining the first region, the residual air gap is formed between the end face or end face of the magnet armature and the second region.

Aus dem Stand der Technik sind bereits Magnetventile bekannt, bei denen die Magnetspule gekapselt, d.h. vor dem Zutritt von Kraftstoff oder ähnlichem geschützt angeordnet ist. Im Rahmen der Erfindung wird es zur Ausbildung eines derartigen, "trockenen" Magnetventils vorgeschlagen, dass das Trägerelement aus einem Innenpolring und einem Außenpolring besteht, die konzentrisch zueinander angeordnet sind und die mit einem nichtmagnetischen Zwischenelement oder einem Ring miteinander verbunden sind, derart, dass das Trägerelement auf der dem Magnetanker abgewandten Seite einen von einem Magnetankerraum hydraulisch getrennten Aufnahmeraum für die Magnetbaugruppe ausbildet. Eine derartige Ausbildung des Trägerelements lässt sich herstellungstechnisch vorteilhaft ausführen und vermeidet darüber hinaus durch die Trennung der beiden Räume den Zutritt von Kraftstoff zu dem Bereich der Magnetspule.Solenoid valves are already known from the prior art, in which the magnetic coil is encapsulated, ie, is arranged protected from the entry of fuel or the like. In the context of the invention, it is proposed for the formation of such a "dry" solenoid valve, that the support element consists of an inner pole ring and an outer pole ring, which are arranged concentrically to each other and which are connected to a non-magnetic intermediate element or a ring, such that the Carrier element on the side facing away from the magnet armature forms a receiving space for the magnet assembly that is hydraulically separated from a magnet armature space. Such a design of the carrier element can be advantageously carried out manufacturing technology and also avoids the access of fuel to the region of the magnetic coil by the separation of the two spaces.

Konstruktiv kann der Restluftspalt dadurch ausgebildet werden, dass die beiden Bereiche durch Vertiefungen am Innenpolring und/oder am Außenpolring und/oder am Zwischenelement ausgebildet ist, wobei durch das Maß der Vertiefung die Größe des Restluftspalts eingestellt wird.Constructively, the residual air gap can be formed by the two areas being formed by depressions on the inner pole ring and / or on the outer pole ring and / or on the intermediate element, the size of the residual air gap being set by the dimension of the depression.

In einer ersten konkreten Ausgestaltung des zuletzt gemachten Vorschlags ist es vorgesehen, das Zwischenelement aus Lotmaterial oder aus Kunststoff besteht, und dass die Vertiefungen durch einen spanenden Arbeitsschritt, insbesondere durch Schleifen erzeugt werden.In a first concrete embodiment of the suggestion made last, it is provided that the intermediate element consists of solder material or of plastic, and that the depressions are produced by a machining operation, in particular by grinding.

In alternativer Ausgestaltung ist es jedoch auch denkbar, dass das Zwischenelement als Metallring ausgebildet ist, der mit dem Innenpolring und dem Außenpolring verschweißt ist. Eine derartige Verschweißung wird vorzugsweise mittels einer Laserstrahlschweißeinrichtung durchgeführt, die hochpräzise Schweißnähte auch an relativ kleinen Bauteilen ermöglicht und sich darüber hinaus prozesstechnisch gut überwachen lässt.In an alternative embodiment, however, it is also conceivable that the intermediate element is designed as a metal ring which is welded to the inner pole ring and the outer pole ring. Such welding is preferably carried out by means of a laser beam welding device, which enables high-precision welds even on relatively small components and can also be monitored in terms of process technology.

Eine weitere bevorzugte Ausgestaltung der Erfindung, bei der sich die wirksame Polfläche des Außenpolrings und/oder des Innenpolrings vergrößern lässt, schlägt vor, dass der Metallring in Überdeckung mit der dem Metallring zugewandten Stirnseite der Magnetspule angeordnet ist und eine geringere Breite aufweist als die Stirnfläche der Magnetspule. Dadurch ragt der Innenpolring und/oder der Außenpolring mit einem radialen Umfang in den Bereich der Magnetspule, wodurch der magnetische Fluss verstärkt wird.A further preferred embodiment of the invention, in which the effective pole face of the outer pole ring and / or the inner pole ring can be enlarged, suggests that the metal ring is arranged in coincidence with the end face of the magnet coil facing the metal ring and has a smaller width than the end face of the magnet ring magnetic coil. As a result, the inner pole ring and / or the outer pole ring projects with a radial circumference into the region of the magnet coil, whereby the magnetic flux is amplified.

Zur Einstellung des Restluftspalts kann der erwähnte Metallring dienen, wozu dieser auf der dem Magnetanker zugewandten Seite über die Stirnfläche des Innenpolrings und des Außenpolrings herausragt. Wenn es fertigungstechnisch gelingt, diesen beim Verschweißen genau genug zum Innenpolring und zum Außenpolring zu positionieren, kann somit auf einen mechanischen Materialabtrag verzichtet werden.For adjusting the residual air gap, the mentioned metal ring can serve, for which purpose it projects beyond the end face of the inner pole ring and the outer pole ring on the side facing the magnet armature. If it is manufac-turing to position it precisely enough for the inner pole ring and the outer pole ring during welding, a mechanical material removal can thus be dispensed with.

Zusätzlich kann die Charakteristik des Magnetventils bzw. des Restluftspalts auch über eine strukturierte Stirnfläche des Magnetankers auf der der Magnetspule zugewandten Seite beeinflusst werden. Daher ist es in einer weiteren Ausgestaltung der Erfindung vorgesehen, dass der Magnetanker auf der dem Magnetkern zugewandten Seite eine strukturierte Stirnfläche aufweist, insbesondere in Form wenigstens einer ringförmig umlaufenden Stufe. Es werden somit insbesondere konzentrisch ausgebildete Bereiche an der Stirnseite des Magnetankers ausgebildet, die zum Magnetkern bzw. zur Magnetspule unterschiedliche Abstände aufweisen.In addition, the characteristic of the solenoid valve or of the residual air gap can also be influenced via a structured end face of the magnet armature on the side facing the magnet coil. Therefore it is in one further embodiment of the invention that the magnet armature on the side facing the magnetic core has a structured end face, in particular in the form of at least one annular peripheral step. Thus, in particular concentrically formed regions are formed on the end face of the magnet armature, which have different distances from the magnet core or the magnet coil.

Die Erfindung umfasst auch ein Verfahren zum Herstellen eines erfindungsgemäßen Magnetventils. Dabei ist es vorgesehen, dass der Restluftspalt durch einen Materialabtrag an einem den Magnetkern und die Magnetspule aufnehmenden Trägerelement oder durch Positionieren eines mit dem Trägerelement einstückig verbundenen Rings eingestellt wird. Ein derartiges Verfahren hat den Vorteil, dass eine hochgenaue Einstellung des Arbeitsluftspalts ohne die Verwendung eines separaten Bauteils ermöglicht wird.The invention also includes a method for producing a solenoid valve according to the invention. It is provided that the residual air gap is adjusted by a material removal on a magnetic core and the magnetic coil receiving carrier element or by positioning a piece integrally connected to the carrier element ring. Such a method has the advantage that a highly accurate adjustment of the working air gap is made possible without the use of a separate component.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiel sowie anhand der Zeichnungen.Further advantages, features and details of the invention will become apparent from the following description of preferred embodiment and from the drawings.

Diese zeigt in:

Fig. 1
einen Teilbereich eines erfindungsgemäßen Magnetventils im Längsschnitt,
Fig. 2 bis Fig. 5
jeweils Details der Fig. 1 im Bereich zwischen dem Anker und einer Magnetbaugruppe unter Verwendung unterschiedlich ausgebildeter Restluftspalte am Trägerelement in einem Teillängsschnitt und
Fig. 6
ein gegenüber den Fig. 1 bis 5 abgewandeltes Magnetventil unter Verwendung eines metallischen Rings zur Verbindung eines Innenpolrings und eines Außenpolrings, ebenfalls in einem Teillängsschnitt.
This shows in:
Fig. 1
a partial region of a solenoid valve according to the invention in longitudinal section,
Fig. 2 to Fig. 5
each detail of the Fig. 1 in the region between the armature and a magnet assembly using differently shaped residual air gaps on the carrier element in a partial longitudinal section and
Fig. 6
one opposite the Fig. 1 to 5 modified solenoid valve using a metallic ring for connecting an inner pole ring and a Außenpolrings, also in a partial longitudinal section.

Gleiche Elemente bzw. Elemente mit gleicher Funktion sind in den Figuren mit den gleichen Bezugsziffern versehen.The same elements or elements with the same function are provided in the figures with the same reference numerals.

In der Fig. 1 ist ausschnittsweise ein erfindungsgemäßes Magnetventil 10 dargestellt, wie es vorzugsweise, jedoch nicht einschränkend, als Bestandteil in einem Common-Rail-Injektor 100 zum Einspritzen von Kraftstoff in den Brennraum einer (nicht dargestellten) Brennkraftmaschine, insbesondere einer selbstzündenden Brennkraftmaschine, verwendet wird.In the Fig. 1 1 is a detail of a solenoid valve 10 according to the invention, as it is preferably, but not restrictively, used as a component in a common rail injector 100 for injecting fuel into the combustion chamber of an internal combustion engine (not shown), in particular a self-igniting internal combustion engine.

Das Magnetventil 10 dient zum Auf- und Abbewegen eines lediglich in seinem oberen Teilbereich dargestellten Ventilglieds 11, das im unbestromten Zustand mittels einer Druckfeder 12 gegen einen nicht gezeigten Dichtsitz gedrückt wird. Bei einer Bestromung des Magnetventils 10 hebt das Ventilglied 11 von dem Dichtsitz ab. Diese Öffnungsstellung des Ventilglieds 11 ist in der Fig. 1 dargestellt. Die Betätigung des Ventilglieds 11 erfolgt mittels eines im Querschnitt hutförmigen Magnetankers 13, der mit einem hülsenförmigen Abschnitt 14 auf den Umfang des Ventilglieds 11 aufgepresst ist. Der hülsenförmige Abschnitt 14 ist von einem flachen bzw. plattenförmigen Magnetankerabschnitt 15 umgeben.The solenoid valve 10 serves to move up and down a valve member 11 shown only in its upper portion, which is pressed in the de-energized state by means of a compression spring 12 against a sealing seat, not shown. When the solenoid valve 10 is energized, the valve member 11 lifts off from the sealing seat. This open position of the valve member 11 is in the Fig. 1 shown. The actuation of the valve member 11 by means of a cross-hat-shaped armature 13, which is pressed with a sleeve-shaped portion 14 on the circumference of the valve member 11. The sleeve-shaped section 14 is surrounded by a flat or plate-shaped magnet armature section 15.

Der Magnetanker 13 wirkt mit einer Magnetbaugruppe 18 zusammen, die eine über Steckeranschlussfahnen 19 elektrisch kontaktierte Magnetspule 20 umfasst, die in einem Magnetkern 21 angeordnet bzw. eingebettet ist. Der Magnetkern 21 ist zusammen mit der Magnetspule 20 in einem Trägerelement 25 angeordnet bzw. aufgenommen, das aus einem hülsenförmigen Innenpolring 26 und einem hülsenförmigen Außenpolring 27 besteht. Das Trägerelement 25 ist mittels einer Überwurfmutter 23 axial mit einem Ventilgehäusekörper 24 verspannt. Die beiden aus magnetischem Material bestehenden Elemente des Trägerelements 25 sind mittels eines nichtmagnetischen Zwischenelements 28 miteinander verbunden. Das Zwischenelement 28 besteht vorzugsweise aus Lotmaterial und verbindet die schräg angeordneten Flächen 29, 30 des Innenpolrings 26 und des Außenpolrings 27 miteinander.The magnet armature 13 cooperates with a magnet assembly 18 which comprises a solenoid coil 20 which is electrically contacted via plug connection lugs 19 and which is arranged or embedded in a magnet core 21. The magnet core 21 is arranged or accommodated together with the magnet coil 20 in a carrier element 25, which consists of a sleeve-shaped inner pole ring 26 and a sleeve-shaped outer pole ring 27. The carrier element 25 is clamped by means of a union nut 23 axially with a valve housing body 24. The two magnetic material elements of the carrier element 25 are connected to each other by means of a non-magnetic intermediate element 28. The intermediate element 28 is preferably made of solder material and connects the inclined surfaces 29, 30 of the inner pole ring 26 and the outer pole ring 27 with each other.

Das konzentrisch innerhalb des Außenpolrings 27 angeordnete Innenpolring 26 nimmt in einer als Durchgangsbohrung ausgebildeten Stufenbohrung 32 die Druckfeder 12 auf. Durch die Stufenbohrung 32 erfolgt darüber hinaus ein Rückfluss von Kraftstoff zu einem Kraftstoffrücklaufstutzen 31, wozu der Magnetanker 13 wenigstens eine, vorzugsweise jedoch mehrere in gleich großen Winkelabständen zueinander angeordnete Durchgangsbohrungen 33 aufweist, die die Stufenbohrung 32 mit einem Magnetankerraum 34 hydraulisch verbindet. Durch das Zwischenelement 28 wird von dem Trägerelement 25 auf der dem Magnetanker 13 gegenüberliegenden Seite ein Aufnahmeraum 35 für die Magnetbaugruppe 18 ausgebildet, der gegenüber den Kraftstoff führenden Bereichen des Injektors 100 abgedichtet ist. Bei einer Bestromung des Magnetventils 10 wird der Magnetanker 13 in Richtung zur Magnetbaugruppe 18 bzw. zur Magnetspule 20 gezogen, wodurch sich das mit dem Magnetanker 13 verbundene Ventilglied 11 von seinem Dichtsitz abhebt einen Kraftstofffluss in Richtung zum Magnetankerraum 34 freigibt.The inner pole ring 26, which is arranged concentrically within the outer pole ring 27, receives the compression spring 12 in a stepped bore 32 designed as a through-bore. Through the stepped bore 32 beyond a return flow of fuel to a fuel return pipe 31, including the Magnetic armature 13 has at least one, but preferably a plurality of equally spaced angularly spaced through holes 33 which connects the stepped bore 32 with a magnetic armature space 34 hydraulically. By means of the intermediate element 28, a receiving space 35 for the magnetic assembly 18 is formed by the carrier element 25 on the side opposite the magnet armature 13, which is sealed against the fuel-carrying areas of the injector 100. When the solenoid valve 10 is energized, the magnet armature 13 is pulled in the direction of the magnet assembly 18 or the magnet coil 20, whereby the valve member 11 connected to the magnet armature 13 lifts off from its sealing seat and releases a fuel flow in the direction of the magnet armature space 34.

Um in der in den Figuren dargestellten (oberen) Endstellung des Magnetankers 13 zu vermeiden, dass der Magnetanker 13 beim Abschalten der Bestromung der Magnetspule 20 an dem Trägerelement 25 anhaften bleibt, und somit nicht von der Druckfeder 12 in Richtung des Dichtsitzes bewegt wird, ist es erforderlich, zwischen dem Magnetanker 13 und dem die Magnetbaugruppe 18 aufnehmenden Trägerelement 25 einen Restluftspalt 36 auszubilden. Bei der in den Fig. 1 und 2 dargestellten ersten Ausgestaltung zur Ausbildung des Restluftspalts 36 weist das Trägerelement 25 einen ringförmigen ersten Bereich 37 auf, an dem der Magnetanker 13 mit seiner Stirnfläche 38 in der dargestellten Endposition anliegt. Der erste Bereich 37 bildet somit einen Anschlag für den Magnetanker 13 aus. Radial innerhalb des ersten Bereichs 37 ist ein zweiter Bereich 39 ausgebildet, der in Form einer Vertiefung 40 ausgebildet ist. Die Vertiefung 40 ist bei dem in den Fig. 1 und 2 dargestellten Ausführungsbeispiel an der dem Magnetanker 13 zugewandten Stirnseite des Innenpolrings 26 und des Zwischenelements 28, sowie in einem kleinen Teilbereich des Außenpolrings 27 ausgebildet. Die geometrische Dimensionierung der Vertiefung 40 bestimmt dabei die Größe des Restluftspalts 36. Erfindungsgemäß ist es vorgesehen, dass die Vertiefung 40 durch einen spanenden Bearbeitungsgang, insbesondere durch Schleifen, ausgebildet bzw. eingestellt wird.In order to avoid in the (upper) end position of the magnet armature 13 shown in the figures, that the magnet armature 13 adheres to the carrier element 25 when switching off the energization of the magnetic coil 20, and thus is not moved by the compression spring 12 in the direction of the sealing seat is it is necessary to form a residual air gap 36 between the armature 13 and the magnet assembly 18 receiving support member 25. In the in the Fig. 1 and 2 illustrated first embodiment for forming the residual air gap 36, the support member 25 on an annular first portion 37, on which the armature 13 abuts with its end face 38 in the illustrated end position. The first region 37 thus forms a stop for the armature 13. Radially within the first region 37, a second region 39 is formed, which is formed in the form of a recess 40. The recess 40 is in the in the Fig. 1 and 2 illustrated embodiment on the magnet armature 13 facing end side of the inner pole ring 26 and the intermediate member 28, and formed in a small portion of the outer pole ring 27. The geometric dimensioning of the recess 40 determines the size of the residual air gap 36. According to the invention, it is provided that the recess 40 is formed or adjusted by a machining operation, in particular by grinding.

In der Fig. 3 ist ein abgewandeltes Ausführungsbeispiel der Erfindung dargestellt, bei der der Restluftspalt 36 durch eine Vertiefung 40a ausgebildet ist, die im Bereich des Außenpolrings 27, des Zwischenelements 28, sowie eines kleinen Teilbereichs des Innenpolrings 26 ausgebildet ist.In the Fig. 3 a modified embodiment of the invention is shown, in which the residual air gap 36 is formed by a recess 40a, which is formed in the region of the outer pole ring 27, the intermediate member 28, and a small portion of the inner pole ring 26.

Bei dem in der Fig. 4 dargestellten Ausführungsbeispiel der Erfindung sind zwei, jeweils ringförmige Vertiefungen 40b, 40c im Bereich des Innenpolrings 26 sowie des Außenpolrings 27 ausgebildet. In diesem Fall bildet der ringförmige, erhabene Abschnitt 41 des Zwischenelements 28a das Anschlagelement für den Magnetanker 13 aus.In the in the Fig. 4 illustrated embodiment of the invention, two, respectively annular recesses 40b, 40c in the region of the inner pole ring 26 and the outer pole ring 27 are formed. In this case, the annular raised portion 41 of the intermediate member 28a forms the stopper member for the armature 13.

In der Fig. 5 ist ein gegenüber der Fig. 4 abgewandeltes Ausführungsbeispiel dargestellt, bei der das Zwischenelement 28b im Bereich des Außenpolrings 27 die Stirnfläche 38 des Magnetankers 13 überdeckt. Bei diesem Ausführungsbeispiel ist die Vertiefung 40d im Wesentlichen nur im Bereich des Innenpolrings 26 ausgebildet.In the Fig. 5 is one opposite the Fig. 4 illustrated modified embodiment in which the intermediate element 28b in the region of the outer pole ring 27, the end face 38 of the magnet armature 13 covers. In this embodiment, the recess 40d is formed substantially only in the region of the inner pole ring 26.

In Abwandlung zu dem in der Fig. 5 dargestellten Ausführungsbeispiel kann es auch vorgesehen sein, dass das Zwischenelement 28b auch den Bereich des Innenpolrings 26 auf der dem Magnetanker 13 zugewandten Stirnseite vollständig überdeckt (nicht dargestellt). In diesem Fall bildet das Material des Zwischenelements 28b zwischen dem Innenpolring 26, dem Außenpolring 27 und dem Magnetanker 13 den Restluftspalt 36 aus. Zur Einstellung des Restluftspalts 36 ist es in diesem Fall erforderlich, das Zwischenelement 28b entsprechend zu bearbeiten bzw. in seiner Dicke entsprechend dem gewünschten Restluftspalt 36 auszubilden.In modification to that in the Fig. 5 1, it can also be provided that the intermediate element 28b also completely covers the region of the inner pole ring 26 on the end face facing the magnet armature 13 (not shown). In this case, the material of the intermediate element 28b forms the residual air gap 36 between the inner pole ring 26, the outer pole ring 27 and the magnet armature 13. To adjust the residual air gap 36, it is necessary in this case, the intermediate element 28b to edit accordingly or form in thickness according to the desired residual air gap 36.

Zuletzt ist in der Fig. 6 ein weiteres Ausführungsbeispiel der Erfindung dargestellt, bei dem das Zwischenelement 28, 28a, 28b gemäß der Fig. 1 bis 5 durch einen metallischen, nichtmagnetischen Ring 42 ersetzt ist. Der Ring 42 ist im dargestellten Ausführungsbeispiel fluchtend zur Magnetspule 20 angeordnet und weist eine geringere Breite auf als die Magnetspule 20. Das bedeutet, dass der Innenpolring 26 und der Außenpolring 27 mit jeweils geringen Flächenabschnitten 43, 44 in Überdeckung mit der Stirnfläche der Magnetspule 20 angeordnet sind. Der Ring 42 ragt über die jeweils ebenen, und sich auf demselben Niveau befindlichen Stirnflächen des Innenpolrings 26 und des Außenpolrings 27 auf der dem Magnetankers 13 zugewandten Seite über den Innenpolring 26 und den Außenpolring 27 heraus, wobei der Restluftspalt 36 durch das Maß bestimmt wird, um das der Ring 42 über den Innenpolring 26 und den Außenpolring 27 herausragt.Last is in the Fig. 6 a further embodiment of the invention shown in which the intermediate element 28, 28 a, 28 b according to the Fig. 1 to 5 is replaced by a metallic, non-magnetic ring 42. The ring 42 is arranged in the illustrated embodiment in alignment with the magnetic coil 20 and has a smaller width than the magnetic coil 20. This means that the inner pole ring 26 and the outer pole ring 27, each with small surface portions 43, 44 in register with the end face of the magnetic coil 20 are. The ring 42 protrudes beyond the inner and outer pole rings 27 via the respective planar end faces of the inner pole ring 26 and the outer pole ring 27 on the side facing the magnet armature 13, whereby the residual air gap 36 is determined by the measure. around which the ring 42 protrudes beyond the inner pole ring 26 and the outer pole ring 27.

Erfindungsgemäß ist vorgesehen, dass der Ring 42 mittels zweier, auf der Seite der Magnetspule 20 angeordneter, jeweils ringförmig umlaufender Schweißnähte 45, 46 mit dem Innenpolring 26 und dem Außenpolring 27 fest und dicht verbunden ist. Die Ausbildung der Schweißnähte 45, 46 erfolgt bevorzugt durch eine Laserstrahlschweißeinrichtung.According to the invention, the ring 42 is firmly and tightly connected to the inner pole ring 26 and the outer pole ring 27 by means of two weld seams 45, 46 arranged on the side of the magnetic coil 20, respectively. The formation of the welds 45, 46 is preferably carried out by a laser beam welding device.

Zusätzlich kann es vorgesehen sein, dass der Magnetanker 13, beispielsweise in einem radial inneren Bereich, eine Vertiefung bzw. Stufe 47 aufweist, so dass der Restluftspalt 36 im Bereich der Stufe 47 gegenüber einem radial äußeren Bereich des Magnetankers 13 vergrößert ist. Ergänzend wird erwähnt, dass eine derartige Oberflächenstrukturierung des Magnetankers 13 auf der der Magnetspule 20 zugewandten Seite auch bei den in den Fig. 1 bis 5 dargestellten Ausführungsbeispielen denkbar ist. Eine derartige Oberflächenstrukturierung kann in Form einer einzigen Vertiefung, oder aber in Form mehrerer Vertiefungen vorgesehen sein. Auch ist deren Form und Anordnung im Wesentlichen von dem jeweiligen Anwendungsfall abhängig. Eine derartige Strukturierung des Magnetankers13 ermöglicht es, die Funktion des Restluftspalts 36 zusätzlich zu beeinflussen bzw. einzustellen.In addition, provision may be made for the magnet armature 13 to have a depression or step 47, for example in a radially inner region, so that the residual air gap 36 in the region of the step 47 is enlarged relative to a radially outer region of the magnet armature 13. In addition, it is mentioned that such a surface structuring of the magnet armature 13 on the side facing the magnetic coil 20 also in the in the Fig. 1 to 5 illustrated embodiments is conceivable. Such a surface structuring may be provided in the form of a single depression or in the form of several depressions. Their shape and arrangement is essentially dependent on the particular application. Such structuring of the magnet armature 13 makes it possible to additionally influence or adjust the function of the residual air gap 36.

Ergänzend wird erwähnt, dass der Ring 42 anstatt durch Schweißen auch auf andere Art und Weise, beispielsweise durch Kleben, mit dem Innenpolring 26 und dem Außenpolring 27 verbunden werden kann. Auch ist es denkbar, den Ring 42 in Form eines Blechteils auszubilden, das mit den ebenfalls als Blechteilen ausgebildeten Innenpolring 26 sowie Außenpolring 27 durch Verbördeln verbunden ist. Zuletzt ist es auch denkbar, den Innenpolring 26 und den Außenpolring 27 im Rahmen einer pulvermetallurgischen Herstellung auszubilden. Eine derartige pulvermetallurgische Ausbildung kann im Sintern oder im MIM-Verfahren erfolgen und umfasst die Verwendung mindestens zweier pulverförmiger Werkstoffe mit unterschiedlichen magnetischen Eigenschaften. Bezüglich des Zwischenelements 28 wird erwähnt, dass dieses auch aus Kunststoff bestehen kann und durch Anspritzen an den Innenpolring 26 und den Außenpolring 27 ausgebildet wird.In addition, it is mentioned that the ring 42 can be connected to the inner pole ring 26 and the outer pole ring 27 in a different manner, for example by gluing, instead of by welding. It is also conceivable to form the ring 42 in the form of a sheet metal part, which is connected by crimping with the inner pole ring 26, which is likewise designed as sheet metal parts, as well as outer pole ring 27. Finally, it is also conceivable to form the inner pole ring 26 and the outer pole ring 27 in the context of a powder metallurgical production. Such a powder metallurgy formation can take place by sintering or in the MIM process and comprises the use of at least two powdered materials having different magnetic properties. With regard to the intermediate element 28, it is mentioned that this can also be made of plastic and is formed by injection molding onto the inner pole ring 26 and the outer pole ring 27.

Claims (10)

Magnetventil (10), mit einer Magnetbaugruppe (18), die eine Magnetspule (20) und einen Magnetkern (21) umfasst, wobei die Magnetbaugruppe (18) in einem Trägerelement (25) angeordnet ist, und mit einem bewegbar angeordneten Magnetanker (13), dessen eine Endposition durch ein Anschlagelement bestimmt ist, das zur Einstellung eines Restluftspalts (36) ausgebildet ist, und an dem der Magnetanker (13) anliegt,
dadurch gekennzeichnet,
dass das Trägerelement (25) das Anschlagelement ausbildet.A solenoid valve (10) comprising a magnet assembly (18) comprising a solenoid (20) and a magnetic core (21), the magnet assembly (18) being disposed in a support member (25) and a magnetically-movable armature (13). whose one end position is determined by a stop element which is designed to set a residual air gap (36) and against which the magnet armature (13) bears,
characterized,
that the carrier element (25) forms the stop element. Magnetventil nach Anspruch 1,
dadurch gekennzeichnet,
dass das Trägerelement (25) auf der dem Magnetanker (13) zugewandten Seite einen vorzugsweise radial umlaufenden ersten Bereich (37) und einen in Bezug zum ersten Bereich (37) in Richtung zum Magnetkern (21) axial zurückgesetzten zweiten Bereich (39) aufweist.Solenoid valve according to Claim 1,
characterized,
that the carrier element (25) on the magnet armature (13) facing side has a preferably circumferential radial first portion (37) and a relative to the first portion (37) in the direction of the magnetic core (21) axially set-back second portion (39). Magnetventil nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass das Trägerelement (25) aus einem Innenpolring (26) und einem Außenpolring (27) besteht, die konzentrisch zueinander angeordnet sind und die mit einem nichtmagnetischen Zwischenelement (28; 28a; 28b) oder einem Ring (42) miteinander verbunden sind, derart, dass das Trägerelement (25) auf der dem Magnetanker (13) abgewandten Seite einen von einem Magnetankerraum (34) hydraulisch getrennten Aufnahmeraum (35) für die Magnetbaugruppe (18) ausbildet.Solenoid valve according to Claim 1 or 2,
characterized,
in that the carrier element (25) consists of an inner pole ring (26) and an outer pole ring (27), which are arranged concentrically with one another and which are connected to one another by a non-magnetic intermediate element (28; 28a; 28b) or a ring (42). in that the carrier element (25) forms on the side facing away from the magnet armature (13) a receiving space (35), which is hydraulically separated from a magnet armature space (34), for the magnet assembly (18). Magnetventil nach Anspruch 2 oder 3,
dadurch gekennzeichnet,
dass die beiden Bereiche (37, 39) durch Vertiefungen (40; 40a bis 40d) am Innenpolring (26) und/oder am Außenpolring (27) und/oder am Zwischenelement (28; 28a; 28b) ausgebildet ist.Solenoid valve according to claim 2 or 3,
characterized,
in that the two regions (37, 39) are formed by depressions (40, 40a to 40d) on the inner pole ring (26) and / or on the outer pole ring (27) and / or on the intermediate element (28, 28a, 28b). Magnetventil nach Anspruch 4,
dadurch gekennzeichnet,
dass das Zwischenelement (28; 28a; 28b) aus Lotmaterial oder aus Kunststoff besteht, und dass die Vertiefungen (40; 40a bis 40d) durch einen spanenden Arbeitsschritt, insbesondere durch Schleifen erzeugt werden.Solenoid valve according to claim 4,
characterized,
that the intermediate element (28; 28a; 28b) consists of solder material or of plastic, and that the depressions (40; 40a to 40d) are produced by a machining operation, in particular by grinding. Magnetventil nach Anspruch 4,
dadurch gekennzeichnet,
dass das Zwischenelement als ein aus Metall besehender Ring (42) ausgebildet ist, der mit dem Innenpolring (26) und dem Außenpolring (27) verschweißt ist.Solenoid valve according to claim 4,
characterized,
in that the intermediate element is designed as a metal ring (42) which is welded to the inner pole ring (26) and the outer pole ring (27). Magnetventil nach Anspruch 6,
dadurch gekennzeichnet,
dass der Ring (42) fluchtend mit der dem Ring (42) zugewandten Stirnseite der Magnetspule (20) angeordnet ist und eine geringere Breite aufweist als die Stirnfläche der Magnetspule (20).Solenoid valve according to claim 6,
characterized,
in that the ring (42) is arranged in alignment with the end face of the magnet coil (20) facing the ring (42) and has a smaller width than the end face of the magnet coil (20). Magnetventil nach einem der Ansprüche 6 oder 7,
dadurch gekennzeichnet,
dass der Ring (42) auf der dem Magnetanker (13) zugewandten Seite über die Stirnfläche des Innenpolrings (26) und des Außenpolrings (27) herausragt.Solenoid valve according to one of claims 6 or 7,
characterized,
in that the ring (42) projects beyond the end face of the inner pole ring (26) and the outer pole ring (27) on the side facing the magnet armature (13). Magnetventil nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
dass der Magnetanker (13) auf der dem Magnetkern (21) zugewandten Seite eine strukturierte Stirnfläche aufweist, insbesondere in Form wenigstens einer ringförmig umlaufenden Stufe (47).Solenoid valve according to one of claims 1 to 8,
characterized,
in that the magnet armature (13) has a structured end face on the side facing the magnet core (21), in particular in the form of at least one annular peripheral step (47). Verfahren zum Herstellen eines Magnetventils (10) nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet,
dass der Restluftspalt (36) durch einen Materialabtrag an einem den Magnetkern (21) und die Magnetspule (20) aufnehmenden Trägerelement (25) oder durch Positionieren eines mit dem Trägerelement (25) einstückig verbundenen Rings (42) eingestellt wird.Method for producing a solenoid valve (10) according to one of claims 1 to 9,
characterized,
in that the residual air gap (36) is set by a material removal on a carrier element (25) receiving the magnetic core (21) and the magnet coil (20) or by positioning a ring (42) integrally connected to the carrier element (25).
EP13191453.3A 2012-12-21 2013-11-04 Solenoid valve and method for producing a solenoid valve Active EP2747095B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012224240.6A DE102012224240A1 (en) 2012-12-21 2012-12-21 Solenoid valve and method of manufacturing a solenoid valve

Publications (3)

Publication Number Publication Date
EP2747095A2 true EP2747095A2 (en) 2014-06-25
EP2747095A3 EP2747095A3 (en) 2018-01-10
EP2747095B1 EP2747095B1 (en) 2020-01-08

Family

ID=49546273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13191453.3A Active EP2747095B1 (en) 2012-12-21 2013-11-04 Solenoid valve and method for producing a solenoid valve

Country Status (2)

Country Link
EP (1) EP2747095B1 (en)
DE (1) DE102012224240A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017001085A1 (en) * 2015-06-30 2017-01-05 Robert Bosch Gmbh Magnet assembly and fuel injector comprising a magnet assembly
JP2018017191A (en) * 2016-07-28 2018-02-01 株式会社デンソー Fuel injection valve
WO2018021123A1 (en) * 2016-07-28 2018-02-01 株式会社デンソー Fuel injection valve
JP2018025184A (en) * 2016-07-28 2018-02-15 株式会社デンソー Fuel injection valve

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021260015A1 (en) 2020-06-24 2021-12-30 Hoerbiger Wien Gmbh Solenoid valve

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010030600A1 (en) 2010-06-28 2011-12-29 Robert Bosch Gmbh Minimization of the Ankerschließprellens by a delay element in the residual air gap

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918818A (en) * 1996-05-22 1999-07-06 Denso Corporation Electromagnetically actuated injection valve
JP3874698B2 (en) * 2002-06-05 2007-01-31 株式会社デンソー Solenoid for solenoid valve
JP5101456B2 (en) * 2008-10-21 2012-12-19 三菱重工業株式会社 Solenoid solenoid valve device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010030600A1 (en) 2010-06-28 2011-12-29 Robert Bosch Gmbh Minimization of the Ankerschließprellens by a delay element in the residual air gap

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017001085A1 (en) * 2015-06-30 2017-01-05 Robert Bosch Gmbh Magnet assembly and fuel injector comprising a magnet assembly
KR20180023967A (en) * 2015-06-30 2018-03-07 로베르트 보쉬 게엠베하 A fuel injector comprising a magnet assembly and the magnet assembly
CN107810356A (en) * 2015-06-30 2018-03-16 罗伯特·博世有限公司 Magnetic assembly and the fuel injector with magnetic assembly
CN107810356B (en) * 2015-06-30 2020-01-10 罗伯特·博世有限公司 Magnet assembly and fuel injector having a magnet assembly
JP2018017191A (en) * 2016-07-28 2018-02-01 株式会社デンソー Fuel injection valve
WO2018021123A1 (en) * 2016-07-28 2018-02-01 株式会社デンソー Fuel injection valve
WO2018021124A1 (en) * 2016-07-28 2018-02-01 株式会社デンソー Fuel injection valve
JP2018025184A (en) * 2016-07-28 2018-02-15 株式会社デンソー Fuel injection valve

Also Published As

Publication number Publication date
EP2747095B1 (en) 2020-01-08
DE102012224240A1 (en) 2014-06-26
EP2747095A3 (en) 2018-01-10

Similar Documents

Publication Publication Date Title
EP1877660B1 (en) Fuel injection valve and method for the assembly thereof
EP1789673B1 (en) Fuel injection valve
EP2747095B1 (en) Solenoid valve and method for producing a solenoid valve
DE19736684A1 (en) Fuel injector for internal combustion engine
DE102005040361A1 (en) Metallic components for electromagnetically operated fuel injection valve, have surface-roughening structure that is provided by laser, where metal oxides such as chrome oxides are deposited in roughening structure
WO2015086192A1 (en) Fuel injection valve
DE102009000183A1 (en) Fuel injection valve for fuel injection systems of internal combustion engines, particularly for direct injection of fuel in combustion chamber of internal combustion engine, has actuator and flow choke provided in fuel supply
EP0683861B1 (en) Electromagnetic valve
DE19712922B4 (en) Fuel injector
WO2012168077A1 (en) Armature for a magnetic valve and method for producing an armature
DE102010064097A1 (en) Electromagnetically actuatable valve e.g. fuel injection valve of internal combustion engine, has movable valve needle with lower stopper comprising top stop face with elevations and depressions on which armature rests
DE102011089247A1 (en) Fuel injector
DE102015226528A1 (en) Fuel injector
EP3469207B1 (en) Residual air gap disk for a solenoid valve and fuel injector having a residual air gap disk
EP3380715B1 (en) Fuel injector
DE102014225994A1 (en) Fuel injector
DE102016226135A1 (en) Fuel injector
EP3097302B1 (en) Fuel injector
DE102012210956A1 (en) Method for producing a housing, in particular a valve housing
DE102014226003A1 (en) Fuel injector
EP3034856B1 (en) Fuel injector valve
DE102009000184A1 (en) Fuel injector
DE102013225820A1 (en) Fuel injector
DE102018200357A1 (en) Valve for metering a fluid, in particular fuel injection valve
DE102013225817A1 (en) Fuel injector

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20131104

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: H01F 7/06 20060101AFI20171201BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

R17P Request for examination filed (corrected)

Effective date: 20180710

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20181106

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

INTG Intention to grant announced

Effective date: 20190606

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013014164

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1223704

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200215

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: ROBERT BOSCH GMBH

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200108

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200531

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200409

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200508

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013014164

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20201009

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20201104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201104

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20201130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201130

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201130

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201104

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1223704

Country of ref document: AT

Kind code of ref document: T

Effective date: 20201104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201104

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20220125

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201130

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502013014164

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230601