WO2006097363A1 - Electromagnetic valve - Google Patents

Electromagnetic valve Download PDF

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Publication number
WO2006097363A1
WO2006097363A1 PCT/EP2006/050067 EP2006050067W WO2006097363A1 WO 2006097363 A1 WO2006097363 A1 WO 2006097363A1 EP 2006050067 W EP2006050067 W EP 2006050067W WO 2006097363 A1 WO2006097363 A1 WO 2006097363A1
Authority
WO
WIPO (PCT)
Prior art keywords
cartridge body
magnetic
armature
valve according
housing
Prior art date
Application number
PCT/EP2006/050067
Other languages
German (de)
French (fr)
Inventor
Christoph Voss
Original Assignee
Continental Teves Ag & Co. Ohg
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 Continental Teves Ag & Co. Ohg filed Critical Continental Teves Ag & Co. Ohg
Publication of WO2006097363A1 publication Critical patent/WO2006097363A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0603—Multiple-way valves
    • F16K31/0624—Lift valves
    • F16K31/0627—Lift valves with movable valve member positioned between seats
    • F16K31/0631—Lift valves with movable valve member positioned between seats with ball shaped valve members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/025—Electrically controlled valves
    • B60T15/028—Electrically controlled valves in hydraulic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F16K31/0665—Lift valves with valve member being at least partially ball-shaped

Definitions

  • the invention relates to a solenoid valve according to the preamble of patent claim 1.
  • the valve housing receives a cooperating with a magnet armature valve closure member which is directed to a valve seat in the valve housing.
  • a magnet coil is provided, which generates a magnetic field during electrical energization, the lines of force via an axial air gap in the magnet armature axially on and radially emerge through the armature jacket surface in the direction of the valve housing.
  • a non-ferromagnetic spacer ring which must be sealed between the valve body and the pole core, so that the hydraulic pressure does not escape via the magnetic coil into the atmosphere.
  • the magnetic drive can only be inserted into the tubular valve housing when first the spacer ring and the pole core have been used as separate parts in the valve housing and pressed together liquid-tight.
  • FIG. 1 shows a first embodiment of the subject invention in the form of a closed in the basic position solenoid valve
  • Figure 2 shows a variant of the embodiment of the solenoid valve of Figure 1 with a cartridge body, on whose non-magnetic region, a plate spring is welded.
  • FIG. 1 shows a longitudinally sectioned, shown as a 2/2-way poppet valve solenoid valve, which has a cartridge in two parts executed valve housing, consisting of a cartridge body 5 and a cartridge body 5 attached to the housing pot 7, which with a magnet armature.
  • 3 cooperating valve closure member 14th in the form of a centrally located on the armature ball receives, which is directed to a valve seat 8 in the housing pot 7.
  • a magnet coil 1 is advantageously integrated in the cartridge body 5.
  • Radially inward as well as radially outward to the magnetic coil 1 is the magnetic flux conducting part of the cartridge body 5, wherein the ferromagnetic conductive part of the cartridge body 5 is interrupted below the magnetic coil 1 by a magnetic flux non-conductive portion 17 to avoid a magnetic short circuit.
  • Axiallufttspalt 2 Between the magnetically conductive part and the magnetically non-conductive portion 17 of the cartridge body 5 and the armature 3 is Axiallufttspalt 2, whereby at current-carrying magnetic coil 1 via this Axialluftspalt 2 of the armature 3 an axial entry and exit of magnetic field lines 4 in the manner shown is exposed .
  • one of the magnetic coil 1 facing end face of the armature 3 covers a the outer periphery of the magnetic coil 1 enclosing, the magnetic flux conducting part of the cartridge body 5, which is why the outer diameter of the magnet armature 3 is chosen to be larger than the outer diameter of the magnet coil 1.
  • the magnet coil 1 is advantageously inserted from above into a matched to the size of the magnetic coil 1 annular groove 6 of the cartridge body 5, both sides of the magnetically conductive part of the cartridge body. 5 is limited.
  • the magnetic coil 1 is covered above the annular groove 6 by a magnetic closing disc 22 which rests flat on the magnetically conductive part of the cartridge body 5 for closing the magnetic circuit.
  • the invention is thus based on the idea of integrally forming a part conducting the magnetic flux as well as a section 17 which does not conduct the magnetic flux or only slightly, within the cartridge body 5 and integrating the magnetic coil 1 in the cartridge body 5 in order to achieve a compact, leak-free as possible Get assembly for the magnetic drive, which can be produced as easily as possible in mass production.
  • the bottom of the cartridge body 5 is provided in the region of the cross-sectional weakening in a simple manner with at least one weld seam 18 extending concentrically or spirally along the bottom.
  • an austenitic annular disc 19 is arranged on the section 17, which is advantageously held by the weld 18 at the bottom of the cartridge body 5.
  • the magnetic flux is attenuated in section 17 so far that the electromagnetic field actuation of the magnet armature 3 shown magnetic field line is ensured.
  • the cartridge body 5 forms with the magnetic coil 3 and the non-magnetic annular disc 19 is an independently manageable assembly, with a non-magnetic housing pot 7 is connected fluid-tight, in which the armature 3 is arranged axially movable with the valve closing member 14.
  • the armature 3 is designed as a plate anchor in order to achieve the lowest possible valve height with the best use of magnetic force can.
  • To reduce the hydraulic resistance of the armature 3 is provided with a plurality of distributed over the armature surface symmetrically to the valve longitudinal axis through holes 13 and / or if necessary, also on the outer circumference with symmetrically distributed recesses.
  • the armature 3 and the through holes 13 and possibly also the recesses are made particularly efficient by punching the magnet armature 3.
  • the magnetic flux conducting part of the cartridge body 5 consists in the two embodiments of a preferably produced by cold striking or extrusion or possibly also by machining of free cutting steel cylinder part, which is known per se from the prior art individual components, consisting of one in the magnetic coil 1 inserted pole core and the outer circumference of the magnetic coil 1 enclosing yoke ring, now united as a homogeneous unit extremely appropriate.
  • the cartridge body 5 is inserted with the attached housing pot 7 in the valve receiving bore 16 of a plurality of pressure medium channels 9, 10 having housing 11 liquid-tight.
  • the cartridge body 5 is made of a material harder with respect to the material of the housing 11 having a step on the outer periphery with a recess 12 into which the cartridge body 5 during the pressing of the cartridge body 16 softer material of the housing 11 is displaced.
  • the magnetic field non-conductive housing pot 7 consists of a particularly cost-effective and precisely manufactured by deep-drawing sleeve part, the sleeve edge is attached to the magnetic flux conducting portion of the cartridge body 5 pressure medium-tight, preferably by means of a welded connection.
  • the bottom of the pot is provided with an opening which is bounded by a valve seat 8, which is preferably produced by the execution of the thin-walled sleeve part as austenitic sheet metal part in the embossing process.
  • embossing opening 15 is located below the magnet armature 3 in the lateral surface of the housing pot 7 in order to connect the horizontally extending in block-shaped housing 11 pressure fluid channel 9 with a arranged below the valve seat 8 in the housing 11 pressure medium channel 10 can.
  • a plate spring 20 is arranged, which keeps the armature 3 to the axial air gap 2 from the magnetic part of the cartridge body 5 in the electrically non-energized state of the magnetic coil 1.
  • the use of a plate spring 20 favors a particularly low valve height.
  • FIG. 2 shows the electromagnetic valve, which is closed in the basic position and has an annular disk 19 which is modified with respect to FIG. 1 and which has the contour of one between the cartridge body 5 and the disk-shaped one Magnet armature 3 has a clamping plate spring whose inner circumference is connected via the weld 18 to the bottom of the cartridge body 5, so that the plate spring rests with its outer periphery of the front side of the disc-shaped armature 3. Due to the design of the annular disc 19 as a plate spring results in a further reduction of the manufacturing effort by the known from Figure 1 separate disc spring 20 can be omitted if desired or required.
  • the electromagnetic valves presented are preferably used in a slip-controlled vehicle brake system for which the block-shaped housing 11 shown only in sections has a plurality of valve receiving bores in one or more rows for receiving the illustrated normally closed solenoid valves in a surface of the housing 11 without any protrusion are admitted.
  • the block-shaped housing 11 is particularly low due to the low height of the illustrated solenoid valves.
  • the illustrated solenoid valves fulfill the function of selectively influencing the brake pressure and the brake pressure reduction in the wheel brakes in the slip control case by means of suitable control electronics, which preferably abut flatly and thus extremely compactly on the upper side of the electromagnetic valves on the housing 11.
  • the proposed features according to the invention result in a particularly short electrical Solenoid valve in various embodiments with respect to the previously known valves approximately twice as large magnetic force.
  • the inventively proposed solenoid valves can be completely submerged in the housing 11, which is ensured by the complete integration of the solenoid 1 in the cartridge body 5 and due to the complete integration of the valve housing in the channel-guiding housing 11 excellent heat dissipation for the magnetic drive.
  • the complete integration of the solenoid valves in the block-shaped housing 11 also facilitates the arrangement of a control electronics required for the activation of the solenoid valves, which is preferably arranged directly on the surface of the housing 11, from which the contacts 21 of the magnetic coil 1 protrude. This results in a good heat dissipation for the control electronics, since the housing 11 is preferably made of a light metal alloy and acts as a heat sink.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention relates to an electromagnetic valve whose magnet flux leading part is embodied in the form a cartridge body (5) which closes the valve reception borehole in a pressurised fluid tight manner, wherein a particularly small-sized magnetic coil (1) is integrated in said body.

Description

ElektromagnetventilSolenoid valve
Die Erfindung betrifft ein Elektromagnetventil nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a solenoid valve according to the preamble of patent claim 1.
Aus der EP 1 124 714 Bl ist bereits ein derartiges Elektromagnetventil bekannt geworden, dessen Ventilgehäuse ein mit einem Magnetanker zusammenwirkendes Ventilschließglied aufnimmt, das auf einen Ventilsitz im Ventilgehäuse gerichtet ist. Zur Betätigung des Magnetankers ist eine Magnetspule vorgesehen, die bei elektrischer Bestromung ein Magnetfeld erzeugt, dessen Kraftlinien über einen Axialluftspalt in den Magnetanker axial ein- und über die Ankermantelfläche in Richtung des Ventilgehäuses radial austreten. Zur Vermeidung eines magnetischen Kurzschlusses befindet sich unterhalb der Magnetspule ein nicht ferromagnetischer Distanzring, der zwischen dem Ventilgehäuse und dem Polkern gedichtet sein muss, damit der Hydraulikdruck nicht über die Magnetspule in die Atmosphäre entweicht. Der Magnetantrieb lässt sich erst dann in das rohrförmige Ventilgehäuse einfügen, wenn zunächst der Distanzring und der Polkern als separate Teile in das Ventilgehäuse eingesetzt und miteinander flüssigkeitsdicht verpresst worden sind.From EP 1 124 714 Bl, such a solenoid valve is already known, the valve housing receives a cooperating with a magnet armature valve closure member which is directed to a valve seat in the valve housing. For actuating the magnet armature, a magnet coil is provided, which generates a magnetic field during electrical energization, the lines of force via an axial air gap in the magnet armature axially on and radially emerge through the armature jacket surface in the direction of the valve housing. To avoid a magnetic short circuit is located below the solenoid, a non-ferromagnetic spacer ring, which must be sealed between the valve body and the pole core, so that the hydraulic pressure does not escape via the magnetic coil into the atmosphere. The magnetic drive can only be inserted into the tubular valve housing when first the spacer ring and the pole core have been used as separate parts in the valve housing and pressed together liquid-tight.
Der Herstellaufwand, die Baugröße als auch das Risiko hinsichtlich einer Leckage aufgrund der Verwendung separater Bauelemente für den nicht magnetischen Teil (Distanzring) und den magnetischen Teil (Polkern) ist somit beträchtlich. Ein weiterer Nachteil ergibt sich infolge der Konstruktion durch die Aufteilung der Magnetkraft in eine Axial- und Radialkraftkomponente, wodurch sich das Magnetfeld nicht optimal zur Betätigung des Ventils nutzen lässt.The manufacturing effort, the size and the risk of leakage due to the use of separate components for the non-magnetic part (spacer ring) and the magnetic part (pole core) is thus considerable. A further disadvantage arises as a result of the construction by the division of the magnetic force into an axial and radial force component, whereby the magnetic field can not be used optimally for actuating the valve.
Daher ist es die Aufgabe der vorliegenden Erfindung, ein Elektromagnetventil der angegebenen Art derart zu verbessern, dass die vorgenannten Nachteile vermieden werden.Therefore, it is the object of the present invention to improve a solenoid valve of the specified type such that the aforementioned disadvantages are avoided.
Diese Aufgabe wird erfindungsgemäß für ein Elektromagnetventil der angegebenen Art mit den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst.This object is achieved for a solenoid valve of the type indicated with the characterizing features of claim 1.
Weitere Merkmale, Vorteile und Anwendungsmöglichkeiten der Erfindung gehen im folgenden aus der Beschreibung mehrerer Ausführungsbeispiele hervor.Other features, advantages and applications of the invention will become apparent from the following description of several embodiments.
Es zeigen:Show it:
Figur 1 eine erste Ausführung des Erfindungsgegenstands in Form eines in Grundstellung geschlossenen Elektromagnetventils,1 shows a first embodiment of the subject invention in the form of a closed in the basic position solenoid valve,
Figur 2 eine Ausgestaltungsvariante des Elektromagnetventils nach Figur 1 mit einem Patronenkörper, an dessen nicht magnetischen Bereich eine Tellerfeder angeschweißt ist.Figure 2 shows a variant of the embodiment of the solenoid valve of Figure 1 with a cartridge body, on whose non-magnetic region, a plate spring is welded.
Die Figur 1 zeigt ein im Längsschnitt abgebildetes, als 2/2- Wege-Sitzventil dargestellte Elektromagnetventil, das ein in Patronenbauweise zweiteilig ausgeführtes Ventilgehäuse auf weist, bestehend aus einem Patronenkörper 5 und einem am Patronenkörper 5 befestigten Gehäusetopf 7, welcher ein mit einem Magnetanker 3 zusammenwirkendes Ventilschließglied 14 in Form einer mittig am Magnetanker angeordneten Kugel aufnimmt, die auf einen Ventilsitz 8 im Gehäusetopf 7 gerichtet ist. Zur Betätigung des Magnetankers 3 ist im Patronenkörper 5 eine Magnetspule 1 vorteilhaft integriert. Radial innenliegend wie auch radial außenliegend zur Magnetspule 1 befindet sich der den Magnetfluss leitenden Teil des Patronenkörpers 5, wobei zur Vermeidung eines magnetischen Kurzschlusses der ferromagnetisch leitende Teil des Patronenkörpers 5 unterhalb der Magnetspule 1 durch einen den Magnetfluß nicht leitenden Abschnitt 17 unterbrochen ist.1 shows a longitudinally sectioned, shown as a 2/2-way poppet valve solenoid valve, which has a cartridge in two parts executed valve housing, consisting of a cartridge body 5 and a cartridge body 5 attached to the housing pot 7, which with a magnet armature. 3 cooperating valve closure member 14th in the form of a centrally located on the armature ball receives, which is directed to a valve seat 8 in the housing pot 7. For actuating the magnet armature 3, a magnet coil 1 is advantageously integrated in the cartridge body 5. Radially inward as well as radially outward to the magnetic coil 1 is the magnetic flux conducting part of the cartridge body 5, wherein the ferromagnetic conductive part of the cartridge body 5 is interrupted below the magnetic coil 1 by a magnetic flux non-conductive portion 17 to avoid a magnetic short circuit.
Zwischen dem magnetisch leitenden Teil sowie dem magnetisch nicht leitenden Abschnitt 17 des Patronenkörpers 5 und dem Magnetanker 3 befindet sich ein Axialluftspalt 2, wodurch bei stromdurchflossener Magnetspule 1 über diesen Axialluftspalt 2 der Magnetanker 3 einem axialen Ein- und Austritt von Magnetfeldlinien 4 in der abgebildeten Weise ausgesetzt ist .Between the magnetically conductive part and the magnetically non-conductive portion 17 of the cartridge body 5 and the armature 3 is Axiallufttspalt 2, whereby at current-carrying magnetic coil 1 via this Axialluftspalt 2 of the armature 3 an axial entry and exit of magnetic field lines 4 in the manner shown is exposed .
Zur Erzielung des für die Funktion des Elektromagnetventils besonders vorteilhaften axialen Ein- und Austritts von Magnetfeldlinien 4 in bzw. aus den Magnetanker 3, überdeckt eine der Magnetspule 1 zugewandte Stirnfläche des Magnetankers 3 einen den Außenumfang der Magnetspule 1 umschließenden, den Magnetfluss leitenden Teil des Patronenkörpers 5, weshalb der Außendurchmesser des Magnetankers 3 größer gewählt ist wie der Außendurchmesser der Magnetspule 1. Die Magnetspule 1 ist vorteilhaft von oben in eine an die Baugröße der Magnetspule 1 angepasste Ringnut 6 des Patronenkörpers 5 eingefügt, die beiderseits vom magnetisch leitenden Teil des Patronenkörpers 5 begrenzt ist. Die Magnetspule 1 ist oberhalb der Ringnut 6 von einer Magnetschlussscheibe 22 verdeckt, die zur Schließung des Magnetkreises flächig am magnetisch leitenden Teil des Patronenkörpers 5 anliegt. Zur Vermeidung eines magnetischen Kurzschlusses übernimmt der im Bereich der Ringnut 6 durch eine partielle Querschnittsschwächung gekennzeichnete Boden des Patronenkörpers 5 die Funktion des nicht oder nur geringfügig magnetisch leitenden Abschnitts 17.To achieve the particularly advantageous for the function of the solenoid valve axial inlet and outlet of magnetic field lines 4 in and out of the armature 3, one of the magnetic coil 1 facing end face of the armature 3 covers a the outer periphery of the magnetic coil 1 enclosing, the magnetic flux conducting part of the cartridge body 5, which is why the outer diameter of the magnet armature 3 is chosen to be larger than the outer diameter of the magnet coil 1. The magnet coil 1 is advantageously inserted from above into a matched to the size of the magnetic coil 1 annular groove 6 of the cartridge body 5, both sides of the magnetically conductive part of the cartridge body. 5 is limited. The magnetic coil 1 is covered above the annular groove 6 by a magnetic closing disc 22 which rests flat on the magnetically conductive part of the cartridge body 5 for closing the magnetic circuit. to Avoidance of a magnetic short circuit takes over in the region of the annular groove 6 characterized by a partial cross-sectional weakening bottom of the cartridge body 5, the function of no or only slightly magnetically conductive portion 17th
Die Erfindung beruht somit auf dem Gedanken, einen den Mag- netfluss leitenden Teil als auch einen den Magnetfluss nicht oder nur geringfügig leitenden Abschnitt 17 einteilig innerhalb des Patronenkörpers 5 auszubilden und die Magnetspule 1 im Patronenkörper 5 zu integrieren, um zu einer möglichst kompakten, leckagefreien Baugruppe für den Magnetantrieb zu gelangen, die sich in der Serienfertigung möglichst einfach herstellen lässt.The invention is thus based on the idea of integrally forming a part conducting the magnetic flux as well as a section 17 which does not conduct the magnetic flux or only slightly, within the cartridge body 5 and integrating the magnetic coil 1 in the cartridge body 5 in order to achieve a compact, leak-free as possible Get assembly for the magnetic drive, which can be produced as easily as possible in mass production.
Zur Vermeidung eines Magnetflusses im Abschnitt 17 ist der Boden des Patronenkörpers 5 im Bereich der Querschnittsschwächung auf einfache Weise mit wenigstens einer konzentrisch oder spiralförmig entlang dem Boden verlaufenden Schweißnaht 18 versehen.In order to avoid magnetic flux in the section 17, the bottom of the cartridge body 5 is provided in the region of the cross-sectional weakening in a simple manner with at least one weld seam 18 extending concentrically or spirally along the bottom.
Ferner ist am Abschnitt 17 eine austenitische Ringscheibe 19 angeordnet, die vorteilhaft durch die Schweißnaht 18 am Boden des Patronenkörpers 5 gehalten ist.Further, an austenitic annular disc 19 is arranged on the section 17, which is advantageously held by the weld 18 at the bottom of the cartridge body 5.
Durch eine oder mehrere am Boden des Patronenkörpers 5 umlaufende Schweißnähte 18 und der geeigneten Wahl des Schweißgutes ist der Magnetfluß im Abschnitt 17 soweit abgeschwächt, dass der zur elektromagnetischen Betätigung des Magnetankers 3 abgebildete Magnetfeldlinienverlauf gewährleistet ist.By one or more at the bottom of the cartridge body 5 circumferential welds 18 and the appropriate choice of the weld metal, the magnetic flux is attenuated in section 17 so far that the electromagnetic field actuation of the magnet armature 3 shown magnetic field line is ensured.
Der Patronenkörper 5 bildet mit der Magnetspule 3 und der nicht magnetischen Ringscheibe 19 eine eigenständig handhabbare Baugruppe, die mit einem nicht magnetischen Gehäusetopf 7 druckmitteldicht verbunden ist, in dem der Magnetanker 3 mit dem Ventilschließglied 14 axial bewegbar angeordnet ist.The cartridge body 5 forms with the magnetic coil 3 and the non-magnetic annular disc 19 is an independently manageable assembly, with a non-magnetic housing pot 7 is connected fluid-tight, in which the armature 3 is arranged axially movable with the valve closing member 14.
Der Magnetanker 3 ist als Plattenanker ausgeführt, um eine möglichst geringe Ventilbauhöhe bei bester Magnetkraftausnutzung realisieren zu können. Zur Verringerung des hydraulischen Widerstands ist der Magnetanker 3 mit mehreren über der Magnetankerfläche symmetrisch zur Ventillängsachse verteilten Durchgangsöffnungen 13 und/oder bei Bedarf auch am Außenumfang mit symmetrisch verteilten Ausnehmungen versehen. Der Magnetanker 3 als auch die Durchgangsöffnungen 13 und ggf. auch die Ausnehmungen sind durch Stanzen des Magnetankers 3 besonders rationell hergestellt.The armature 3 is designed as a plate anchor in order to achieve the lowest possible valve height with the best use of magnetic force can. To reduce the hydraulic resistance of the armature 3 is provided with a plurality of distributed over the armature surface symmetrically to the valve longitudinal axis through holes 13 and / or if necessary, also on the outer circumference with symmetrically distributed recesses. The armature 3 and the through holes 13 and possibly also the recesses are made particularly efficient by punching the magnet armature 3.
Der den Magnetfluss leitende Teil des Patronenkörpers 5 besteht in den beiden Ausführungsbeispielen aus einem bevorzugt durch Kaltschlagen oder Fließpressen oder ggf. auch durch Zerspanen von Automatenstahl hergestelltes Zylinderteil, das die an sich bisher aus dem Stand der Technik bekannten Einzelbauteile, bestehend aus einem in die Magnetspule 1 eingeschobenen Polkern und einem den Außenumfang der Magnetspule 1 umschließenden Jochring, nunmehr als homogene Einheit äußerst zweckmäßig vereinigt.The magnetic flux conducting part of the cartridge body 5 consists in the two embodiments of a preferably produced by cold striking or extrusion or possibly also by machining of free cutting steel cylinder part, which is known per se from the prior art individual components, consisting of one in the magnetic coil 1 inserted pole core and the outer circumference of the magnetic coil 1 enclosing yoke ring, now united as a homogeneous unit extremely appropriate.
Der Patronenkörper 5 ist mit dem angefügte Gehäusetopf 7 in die Ventilaufnahmebohrung 16 eines mehrere Druckmittelkanäle 9, 10 aufweisenden Gehäuses 11 flüssigkeitsdicht eingesetzt.The cartridge body 5 is inserted with the attached housing pot 7 in the valve receiving bore 16 of a plurality of pressure medium channels 9, 10 having housing 11 liquid-tight.
Durch diese besonders geschickte bauliche und funktionelle Ausbildung des Patronenkörpers 5 lässt sich der Herstellaufwand als auch die Ventilbaugröße maßgeblich verringern.This particularly clever construction and functional design of the cartridge body 5, the manufacturing cost and the valve size can be significantly reduced.
Damit der Patronenkörper 5 die Funktion eines die Ventilauf- nahmebohrung 16 abdichtenden Verschlussstopfen auf verblüffend einfache Weise übernehmen kann, ist der Patronenkörper 5 aus einem gegenüber dem Material des Gehäuses 11 härteren Werkstoff hergestellt, der am Außenumfang eine Stufe mit einer Ausnehmung 12 aufweist, in die beim Einpressen des Patronenkörpers 5 in die Ventilaufnahmebohrung 16 das weichere Material des Gehäuses 11 verdrängt wird.So that the cartridge body 5 the function of the valve receiving bore 16 sealing plug can take over in a surprisingly simple way, the cartridge body 5 is made of a material harder with respect to the material of the housing 11 having a step on the outer periphery with a recess 12 into which the cartridge body 5 during the pressing of the cartridge body 16 softer material of the housing 11 is displaced.
Der den Magnetfluss nicht leitende Gehäusetopf 7 besteht aus einem durch Tiefziehen besonders kostengünstig und präzise hergestellten Hülsenteil, dessen Hülsenrand an dem den Magnetfluss leitenden Abschnitt des Patronenkörpers 5 druckmitteldicht, bevorzugt mittels einer Schweißverbindung befestigt ist. Der Topfboden ist mit einer Öffnung versehen, die von einem Ventilsitz 8 begrenzt ist, der aufgrund der Ausführung des dünnwandige Hülsenteils als austenitisches Blechformteil vorzugsweise im Prägeverfahren hergestellt ist. Eine weitere, durch Prägen hergestellte Öffnung 15 befindet sich unterhalb des Magnetankers 3 in der Mantelfläche des Gehäusetopfs 7, um den horizontal im blockförmigen Gehäuse 11 verlaufenden Druckmittelkanal 9 mit einem unterhalb des Ventilsitzes 8 im Gehäuse 11 angeordneten Druckmittelkanal 10 verbinden zu können.The magnetic field non-conductive housing pot 7 consists of a particularly cost-effective and precisely manufactured by deep-drawing sleeve part, the sleeve edge is attached to the magnetic flux conducting portion of the cartridge body 5 pressure medium-tight, preferably by means of a welded connection. The bottom of the pot is provided with an opening which is bounded by a valve seat 8, which is preferably produced by the execution of the thin-walled sleeve part as austenitic sheet metal part in the embossing process. Another, produced by embossing opening 15 is located below the magnet armature 3 in the lateral surface of the housing pot 7 in order to connect the horizontally extending in block-shaped housing 11 pressure fluid channel 9 with a arranged below the valve seat 8 in the housing 11 pressure medium channel 10 can.
Zwischen dem Patronenkörper 5 und dem Magnetanker 3 ist eine Tellerfeder 20 angeordnet, die im elektrisch nicht erregten Zustand der Magnetspule 1 den Magnetanker 3 um den Axialluftspalt 2 vom magnetischen Teil des Patronenkörpers 5 entfernt hält. Die Verwendung einer Tellerfeder 20 begünstigt eine besonders geringe Ventilbauhöhe.Between the cartridge body 5 and the armature 3, a plate spring 20 is arranged, which keeps the armature 3 to the axial air gap 2 from the magnetic part of the cartridge body 5 in the electrically non-energized state of the magnetic coil 1. The use of a plate spring 20 favors a particularly low valve height.
Die Figur 2 zeigt abweichend von Figur 1 das in Grundstellung geschlossenes Elektromagnetventil mit einer gegenüber der Figur 1 abgewandelten Ringscheibe 19, welche die Kontur einer zwischen dem Patronenkörper 5 und dem scheibenförmigen Magnetanker 3 einspannbaren Tellerfeder hat, deren Innenumfang über die Schweißnaht 18 mit dem Boden des Patronenkörpers 5 verbunden ist, so dass die Tellerfeder mit ihrem Außenumfang stirnseitig am scheibenförmigen Magnetanker 3 anliegt. Durch die Ausbildung der Ringscheibe 19 als Tellerfeder ergibt sich eine weitere Verringerung des Herstellaufwands, indem auf die aus Figur 1 bekannte separate Tellerfeder 20 bei Wunsch oder Bedarf verzichtet werden kann.Deviating from FIG. 1, FIG. 2 shows the electromagnetic valve, which is closed in the basic position and has an annular disk 19 which is modified with respect to FIG. 1 and which has the contour of one between the cartridge body 5 and the disk-shaped one Magnet armature 3 has a clamping plate spring whose inner circumference is connected via the weld 18 to the bottom of the cartridge body 5, so that the plate spring rests with its outer periphery of the front side of the disc-shaped armature 3. Due to the design of the annular disc 19 as a plate spring results in a further reduction of the manufacturing effort by the known from Figure 1 separate disc spring 20 can be omitted if desired or required.
Alle weiteren abgebildeten Einzelheiten des Elektromagnetventils nach Figur 2 entsprechen den bereits erläuterten Merkmalen des Elektromagnetventils nach Figur 1.All other details of the solenoid valve shown in FIG. 2 correspond to the already described features of the solenoid valve according to FIG. 1.
Die vorgestellten Elektromagnetventile kommen bevorzugt in einem schlupfgeregelten Kfz-Bremssystem zur Anwendung, wozu das nur abschnittsweise abgebildete blockförmige Gehäuse 11 eine Vielzahl von Ventilaufnahmebohrungen aufweist, die in einer oder in mehreren Reihen zur Aufnahme der abgebildeten stromlos geschlossenen Elektromagnetventile in einer Fläche des Gehäuses 11 ohne Überstand eingelassen sind. Hierdurch ergibt sich ein besonders kompaktes Bremsgerät, dessen blockförmiges Gehäuse 11 aufgrund der geringen Bauhöhe der abgebildeten Elektromagnetventile besonders niedrig baut. Die abgebildeten Elektromagnetventile erfüllen hierbei je nach elektromagnetischer Betätigung die Funktion den Bremsdruckauf- und den Bremsdruckabbau in den Radbremsen im Schlupfregelfall mittels einer geeigneten Steuerelektronik gezielt zu beeinflussen, die bevorzugt flächig und damit äußerst kompakt auf der Oberseite der Elektromagnetventile am Gehäuse 11 anliegt.The electromagnetic valves presented are preferably used in a slip-controlled vehicle brake system for which the block-shaped housing 11 shown only in sections has a plurality of valve receiving bores in one or more rows for receiving the illustrated normally closed solenoid valves in a surface of the housing 11 without any protrusion are admitted. This results in a particularly compact braking device, the block-shaped housing 11 is particularly low due to the low height of the illustrated solenoid valves. Depending on the electromagnetic actuation, the illustrated solenoid valves fulfill the function of selectively influencing the brake pressure and the brake pressure reduction in the wheel brakes in the slip control case by means of suitable control electronics, which preferably abut flatly and thus extremely compactly on the upper side of the electromagnetic valves on the housing 11.
Zusammenfassend ergibt sich durch die vorgeschlagenen erfindungsgemäßen Merkmale ein besonders kurz bauendes Elektro- magnetventil in verschiedenen Ausführungsvarianten mit einer gegenüber den bisher bekannten Ventilen näherungsweise doppelt so großen Magnetkraft. Die erfindungsgemäß vorgeschlagenen Elektromagnetventile lassen sich vollständig im Gehäuse 11 versenken, wobei durch die vollständige Integration der Magnetspule 1 im Patronenkörper 5 und infolge der vollständigen Integration des Ventilgehäuses im kanalführenden Gehäuse 11 eine hervorragende Wärmeableitung für den Magnetantrieb gewährleistet ist.In summary, the proposed features according to the invention result in a particularly short electrical Solenoid valve in various embodiments with respect to the previously known valves approximately twice as large magnetic force. The inventively proposed solenoid valves can be completely submerged in the housing 11, which is ensured by the complete integration of the solenoid 1 in the cartridge body 5 and due to the complete integration of the valve housing in the channel-guiding housing 11 excellent heat dissipation for the magnetic drive.
Die vollständige Integration der Elektromagnetventile im blockförmigen Gehäuse 11 erleichtert überdies die Anordnung einer für die Aktivierung der Elektromagnetventile erforderlichen Steuerelektronik, die bevorzugt unmittelbar auf der Oberfläche des Gehäuses 11 angeordnet ist, aus der die Kontakte 21 der Magnetspule 1 hervorstehen. Hierdurch ergibt sich eine gute Wärmeableitung für die Steuerelektronik, da das Gehäuse 11 bevorzugt aus einer Leichtmetalllegierung gefertigt ist und als Wärmesenke wirkt. The complete integration of the solenoid valves in the block-shaped housing 11 also facilitates the arrangement of a control electronics required for the activation of the solenoid valves, which is preferably arranged directly on the surface of the housing 11, from which the contacts 21 of the magnetic coil 1 protrude. This results in a good heat dissipation for the control electronics, since the housing 11 is preferably made of a light metal alloy and acts as a heat sink.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Magnetspule1 solenoid
2 Axialluftspalt2 axial air gap
3 Magnetanker3 magnetic armature
4 Magnetfeldlinie4 magnetic field line
5 Patronenkörper5 cartridge bodies
6 Ventilgehäuse6 valve housing
7 Gehäusetopf7 housing pot
8 Ventilsitz8 valve seat
9 Druckmittelkanal9 pressure medium channel
10 Druckmittelkanal10 pressure medium channel
11 Gehäuse11 housing
12 Ausnehmung12 recess
13 Durchgangsöffnung13 passage opening
14 Ventilschließglied14 valve closure member
15 Öffnung15 opening
16 Ventilaufnahmebohrung16 valve receiving bore
17 Abschnitt17 section
18 Schweißnaht18 weld
19 Ringscheibe19 ring disk
20 Tellerfeder20 plate spring
21 Kontakt21 contact
22 MagnetSchlussscheibe 22 magnetic washer

Claims

Patentansprüche claims
1. Elektromagnetventil, das in einer Ventilaufnahmebohrung eines Gehäuses einfügbar ist, mit einer Magnetspule zur Betätigung eines scheibenförmigen Magnetankers, der in einem Axialabstand zur Magnetspule angeordnet ist, mit einem bei Erregung der Magnetspule überbrückbaren Axialluftspalt, der zwischen einem den Magnetfluss leitenden Teil und dem Magnetanker vorgesehen ist, sowie mit einem den Magnetfluss nicht oder nur vernachlässigbar gering leitenden Abschnitt, dadurch gekennzeichnet, dass der den Magnetfluss leitende Teil als auch der den Magnetfluss nicht oder nur vernachlässigbar gering leitende Abschnitt (17) einteilig innerhalb eines die Ventilaufnahmebohrung (16) druckmitteldicht verschließenden Patronenkörpers (5) ausgeführt sind, wobei die Magnetspule (1) im Patronenkörper (5) integriert ist.A solenoid valve insertable in a valve receiving bore of a housing, comprising: a solenoid for actuating a disc-shaped armature disposed at an axial distance from the solenoid, an axial-clearance gap bridgeable upon excitation of the solenoid coil, between a magnetic-flux conducting portion and the armature is provided, and with a magnetic flux not or only negligibly low-conductive portion, characterized in that the magnetic flux conducting part and the magnetic flux not or only negligibly low-conductive portion (17) integrally within a valve receiving bore (16) pressure-tight sealing Cartridge body (5) are executed, wherein the magnetic coil (1) in the cartridge body (5) is integrated.
2. Elektromagnetventil nach Anspruch 1, dadurch gekennzeichnet, dass der den Magnetfluss nicht oder nur vernachlässigbar gering leitende Abschnitt (17) des Patronenkörpers (5) zur Vermeidung eines magnetischen Kurzschlusses im Axialabstand zwischen der Magnetspule (1) und dem Magnetanker (3) und zwar im Bereich der kleinsten Bodendicke des Patronenkörpers (5) ausgebildet ist.2. Electromagnetic valve according to claim 1, characterized in that the magnetic flux not or only negligibly low-conductive portion (17) of the cartridge body (5) to avoid a magnetic short circuit in the axial distance between the magnetic coil (1) and the armature (3) and that is formed in the region of the smallest bottom thickness of the cartridge body (5).
3. Elektromagnetventil nach Anspruch 2, dadurch gekennzeichnet, dass zur Ausbildung des den Magnetfluss nicht oder nur vernachlässigbar gering leitenden Abschnitts (17) eine örtliche Querschnittsschwächung mit vorzugsweise einer konzentrisch oder spiralförmig am Boden des Patronenkörpers (5) verlaufenden Schweißnaht (18) vorgesehen ist. 3. Electromagnetic valve according to claim 2, characterized in that the formation of the magnetic flux is not or only negligibly small conductive portion (17) a local cross-sectional weakening preferably with a concentric or spiral at the bottom of the cartridge body (5) extending weld (18) is provided.
4. Elektromagnetventil nach Anspruch 3, dadurch gekennzeichnet:, dass an dem den Magnetfluss nicht oder nur geringfügig leitenden Abschnitt (17) eine austenitische Ringscheibe (19) angeordnet ist, die durch die Schweißnaht (18) am Boden des Patronenkörpers (5) gehalten ist .4. Solenoid valve according to claim 3, characterized in that on the magnetic flux not or only slightly conductive portion (17) an austenitic annular disc (19) is arranged, which is held by the weld (18) at the bottom of the cartridge body (5) ,
5. Elektromagnetventil nach Anspruch 4, dadurch gekennzeichnet, dass die Ringscheibe (19) die Kontur einer zwischen dem Patronenkörper (5) und dem scheibenförmigen Magnetanker (3) einspannbaren Tellerfeder hat, deren Innenumfang bevorzugt über die Schweißnaht (18) mit dem Boden des Patronenkörpers (5) verbunden ist, so dass die Tellerfeder mit ihrem Außenumfang stirnseitig am scheibenförmigen Magnetanker (3) anlegbar ist.5. Electromagnetic valve according to claim 4, characterized in that the annular disc (19) has the contour of a between the cartridge body (5) and the disc-shaped magnet armature (3) can be clamped disc spring whose inner circumference preferably via the weld (18) to the bottom of the cartridge body (5) is connected, so that the plate spring with its outer periphery of the front side of the disc-shaped armature (3) can be applied.
6. Elektromagnetventil nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der Patronenkörper (5) mit der Magnetspule (3) und der Ringscheibe6. Electromagnetic valve according to one of the preceding claims, characterized in that the cartridge body (5) with the magnetic coil (3) and the annular disc
(19) eine eigenständig handhabbare Baugruppe bildet, die mit einem nicht magnetischen Gehäusetopf (7) druckmitteldicht verbindbar ist, in dem der Magnetanker (3) mit dem Ventilschließglied (14) axial bewegbar angeordnet ist.(19) forms a self-contained assembly, which is connected to a non-magnetic housing pot (7) pressure medium tight, in which the armature (3) with the valve closure member (14) is arranged axially movable.
7. Elektromagnetventil nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der Patronenkörper (5) aus einem durch Kaltschlagen, Fließpressen oder durch Zerspanen eines aus Automatenstahl hergestelltes Rohlings besteht.7. Solenoid valve according to one of the preceding claims, characterized in that the cartridge body (5) consists of a produced by cold striking, extrusion or by machining a blank made of free-cutting steel.
8. Elektromagnetventil nach Anspruch 6, dadurch gekennzeichnet, dass der den Magnetfluss nicht leitende Ge- häusetopf (7) aus einem durch Tiefziehen hergestelltes Hülsenteil besteht, das an dem Patronenkörper (5) angeschweißt und/oder mit diesem druckmitteldicht verpresst ist .8. Solenoid valve according to claim 6, characterized in that the non-conductive magnetic flux Housing pot (7) consists of a manufactured by deep drawing sleeve part which is welded to the cartridge body (5) and / or pressed with this pressure medium tight.
9. Elektromagnetventil nach Anspruch 8, dadurch gekennzeichnet, dass am Boden des Gehäusetopfs (7) eine Ventilöffnung mit einem Ventilsitz (8) vorgesehen ist, der vorzugsweise im Prägeverfahren hergestellt ist.9. Electromagnetic valve according to claim 8, characterized in that at the bottom of the housing pot (7) has a valve opening with a valve seat (8) is provided, which is preferably made in the embossing process.
10. Elektromagnetventil nach Anspruch 1, dadurch gekennzeichnet, dass der Patronenkörper (5) aus einem gegenüber dem Material des Gehäuses (11) härteren Werkstoff besteht und dass der Patronenkörper (5) am Außenumfang eine Stufe mit einer Ringnut (12) aufweist, in die das weichere Material des Gehäuses (11) zu Herstellung einer druckmitteldichten, unlösbaren Verbindung mit dem Patronenkörper (5) verdrängbar ist. 10. Electromagnetic valve according to claim 1, characterized in that the cartridge body (5) consists of a relative to the material of the housing (11) harder material and that the cartridge body (5) on the outer circumference of a step with an annular groove (12), in the the softer material of the housing (11) for producing a pressure medium-tight, non-detachable connection with the cartridge body (5) is displaceable.
PCT/EP2006/050067 2005-03-14 2006-01-06 Electromagnetic valve WO2006097363A1 (en)

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DE102005011550.0 2005-03-14
DE102005011550 2005-03-14
DE102005035294A DE102005035294A1 (en) 2005-03-14 2005-07-28 Solenoid valve
DE102005035294.4 2005-07-28

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Publication number Priority date Publication date Assignee Title
DE102007040691B4 (en) 2007-08-29 2019-02-07 Schaeffler Technologies AG & Co. KG Solenoid valve and method of manufacturing a solenoid valve
DE102008020101B4 (en) * 2008-04-22 2013-12-24 Staiger Gmbh & Co. Kg Valve
DE102008023182A1 (en) * 2008-05-10 2009-11-12 Staiger Gmbh & Co. Kg Valve for gaseous and fluidic medium, has magnet head, which has inner core and outer core, which limits annular recess, in which electric coil is supported
DE102011003169A1 (en) * 2011-01-26 2012-07-26 Continental Teves Ag & Co. Ohg magnetic valve
DE102012200156A1 (en) * 2012-01-06 2013-07-11 Continental Teves Ag & Co. Ohg Electro-magnetic valve, particularly for motor vehicle-slip control systems, has spring element with fastening section in center, over which spring element is fixed at front surface of magnetic core facing magnet armature

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DE1285270B (en) * 1965-03-11 1968-12-12 Buehler Ag Geb Hydraulic pressure regulator with electromagnetic actuator
DE3804011C1 (en) * 1988-02-10 1989-07-13 Leopold Kostal Gmbh & Co Kg, 5880 Luedenscheid, De Solenoid valve arrangement
DE9114953U1 (en) * 1991-12-02 1993-04-01 Steuerungstechnik Staiger GmbH & Co Produktions-Vertriebs-KG, 7121 Erligheim Valve
DE4419446A1 (en) * 1994-06-03 1995-12-07 Staiger Steuerungstech Miniature solenoid valve
US6598944B1 (en) * 1998-10-28 2003-07-29 Robert Bosch Gmbh Electromagnetic device, especially for an anti-slip, hydraulic vehicle brake system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1285270B (en) * 1965-03-11 1968-12-12 Buehler Ag Geb Hydraulic pressure regulator with electromagnetic actuator
DE3804011C1 (en) * 1988-02-10 1989-07-13 Leopold Kostal Gmbh & Co Kg, 5880 Luedenscheid, De Solenoid valve arrangement
DE9114953U1 (en) * 1991-12-02 1993-04-01 Steuerungstechnik Staiger GmbH & Co Produktions-Vertriebs-KG, 7121 Erligheim Valve
DE4419446A1 (en) * 1994-06-03 1995-12-07 Staiger Steuerungstech Miniature solenoid valve
US6598944B1 (en) * 1998-10-28 2003-07-29 Robert Bosch Gmbh Electromagnetic device, especially for an anti-slip, hydraulic vehicle brake system

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