EP1068441B1 - Electromagnetic actuating valve and method for producing a magnetic casing for a valve - Google Patents

Electromagnetic actuating valve and method for producing a magnetic casing for a valve Download PDF

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Publication number
EP1068441B1
EP1068441B1 EP99960808A EP99960808A EP1068441B1 EP 1068441 B1 EP1068441 B1 EP 1068441B1 EP 99960808 A EP99960808 A EP 99960808A EP 99960808 A EP99960808 A EP 99960808A EP 1068441 B1 EP1068441 B1 EP 1068441B1
Authority
EP
European Patent Office
Prior art keywords
valve
region
casing
cut
sheet
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.)
Expired - Lifetime
Application number
EP99960808A
Other languages
German (de)
French (fr)
Other versions
EP1068441A1 (en
Inventor
Klaus Noller
Werner Hanft
Hubert Stier
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
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1068441A1 publication Critical patent/EP1068441A1/en
Application granted granted Critical
Publication of EP1068441B1 publication Critical patent/EP1068441B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0476—Including stacking of plural workpieces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0505—With reorientation of work between cuts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0505—With reorientation of work between cuts
    • Y10T83/051—Relative to same tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0577—Repetitive blanking

Definitions

  • the invention is based on an electromagnetic actuatable valve according to the preamble of claim 1 and of a method for producing a magnetic jacket for a valve according to the preamble of claim 8.
  • Electromagnetically actuated valves which have an actuator, at least a magnet coil, a magnet armature for opening and closing of the valve and an external one, the magnetic flux conductive guiding element, e.g. a magnet housing or one Magnetic jacket or guide bracket includes.
  • Such magnet housings are usually machined Surface abrasion produced, whereby turning, milling, Drilling and finishing steps the known methods for the manufacture of a magnetic housing.
  • magnetic sheaths for electromagnetic Manufacture actuatable valves also by deep drawing.
  • the magnetic jackets look so that they are on one have a wide opening to one axial end To be able to insert the solenoid axially.
  • To close the Magnetic circuit in the area of the wide opening are additional Cover elements necessary.
  • To perform coil pins you must extra through openings or openings in the magnetic jacket are provided, which are introduced by drilling or milling become.
  • Another way of running an exterior Magnetic jacket consists of two bow-shaped Guiding elements partially surround the solenoid as it is made out DE-OS 38 25 135 is known. With these guiding elements it is, for example, punched and embossed components brought into the desired shape. Also as Sintering brackets of this type can be implemented.
  • a magnet armature that together with a sleeve-shaped connecting part and spherical valve closing body part of an axial movable valve needle is made of a sheet metal strip to produce a small thickness.
  • This is a sheet metal section first punched out of a sheet in the desired shape and subsequently rolled or bent in such a way that a Magnetic armature with a circular circumference is created.
  • a valve according to the preamble of claim 1 is known from DE-A-4 800 912.
  • the valve according to the invention with the characteristic Features of claim 1 has the advantage that it is very is simple to manufacture and assemble.
  • the magnetic coil is at least partially encased magnetic jacket so shaped that in the magnetic coil can be inserted in the radial direction.
  • the Magnetic jacket is designed so that no additional Components for closing the magnetic circuit around the magnetic coil are needed around. Due to its shape, the Magnetic jacket ideally mountable in the valve.
  • Another advantage is that reduced Tolerance requirements for the outer diameter of the core and Valve seat support and the inside diameter of the Magnetic jacket are placed without any impairment the magnetic transition between these components is caused.
  • the fastening areas are in the manner according to the invention designed segmented, with the segments through several recesses in these attachment areas result.
  • the segments act like collets and can due to low force during assembly be opened. In this way, chip formation and that Avoid scratches. Since the Collet-like fastening areas under pretension the position of the magnetic casing in the valve, e.g. at the Core already well fixed after assembly.
  • the inventive method for producing a Magnetic jacket for a valve with the characteristic Features of claim 8 has the advantage that simple Way a magnetic jacket can be produced, which in axial direction and in the circumferential direction largely one Solenoid can surround without additional measures are required to close the magnetic circuit.
  • the Magnetic jacket can with the inventive method are already shaped in such a way that no others outer magnetic circuit components are required and none Through openings or openings with additional machining processes, such as milling or drilling, must be introduced.
  • Embodiments of the invention are in the drawing shown in simplified form and in the following Description explained in more detail.
  • 1 shows it Known electromagnetically actuated valve with two bow-shaped guide elements as external magnetic flux components
  • Figure 2 shows a sheet metal blank as the basis for a 3 to be produced according to the invention Top view of a magnetic jacket according to the invention
  • FIG. 4 a bottom view of this magnetic jacket
  • Figure 5 a Sectional view of the magnetic jacket along the lines V-V in Figures 4 and 5
  • Figure 6 a second Embodiment of a sheet metal blank for one Magnetic shell.
  • Figure 1 is a known electromagnetically actuated Shown valve that belongs to the prior art and one Possibility of using one described later represents magnetic casing according to the invention. That in the figure 1 shown, for example, electromagnetically actuated Valve in the form of an injector for Fuel injection systems from mixture-compressing, spark-ignited internal combustion engines has one of one Solenoid 1 surrounded, as a fuel inlet port serving tubular core 2 as a so-called inner pole. On Coil body 3 receives a winding of the magnet coil 1.
  • the core 2 extends up to a downstream core end 9 and further downstream, so that is arranged downstream of the bobbin 3 tubular connector, which in the further course as Valve seat carrier 10 is designated, in one piece with the core 2nd is formed, the entire component being a valve tube 12 referred to as.
  • Valve seat support 10 also has a valve tube 12 tubular, but a much thinner wall than that Wall thicknesses of core 2 and valve seat support 10 having magnetic throttle point 13.
  • it is the core 2 and the valve seat carrier 10 are also conceivable to be trained separately and in the area of the throttle point 13 provide non-magnetic intermediate part.
  • the actuation the valve is electromagnetic in a known manner.
  • a longitudinal bore 18 runs in the valve seat support 10, which are formed concentrically to a longitudinal valve axis 15 is.
  • a longitudinal bore 18 In the longitudinal bore 18 is a z.
  • tubular Valve needle 19 arranged at its downstream end 20 with a spherical valve closing body 21, on the Perimeter, for example, five flats 22 to flow past of the fuel are provided, for example by Welding is connected.
  • valve seat support 10 For the axial movement of the valve needle 19 and thus for opening against the spring force of a return spring 25 or Closing the injector is used for electromagnetic Circle with the magnet coil 1, the core 2 and an armature 27.
  • the armature 27 is connected to the valve closing body 21 opposite end of the valve needle 19 by a weld connected and aligned to the core 2.
  • Valve seat support 10 In the downstream end of the core 2 facing away Valve seat support 10 is in the longitudinal bore 18 cylindrical valve seat body 29, which has a fixed Has valve seat, tightly assembled by welding.
  • valve longitudinal axis 15 serves a guide opening 32 of the Valve seat body 29.
  • the guide of the armature 27 is for example by guide lugs in the area of Throttle point 13 taken over.
  • the spherical Valve closing body 21 interacts with the Flow direction frustoconical valve seat of the valve seat body 29 together.
  • a cup-shaped, for example trained spray plate 34 firmly connected.
  • the Spray plate 34 has at least one, for example four formed by eroding or stamping Spray orifices 35.
  • the insertion depth of the valve seat body 29 with the Spray plate 34 determines the size of the stroke of the Valve needle 19.
  • the one end position is the Valve needle 19 when the solenoid 1 is not energized by the System of the valve closing body 21 on the valve seat of the Valve seat body 29 set while the other End position of the valve needle 19 when the magnet coil 1 is excited results from the installation of the armature 17 at the core end 9.
  • the magnet coil 1 is formed by two brackets and guiding elements 45 serving as ferromagnetic elements surround the magnetic coil 1 at least in the circumferential direction partially surrounded and with one end to the core 2 and the rest at the other end on the valve seat support 10 and with this z. B. connectable by welding, soldering or gluing are.
  • the guide elements are in the valve according to the invention 45 by a magnetic jacket 60 produced according to the invention ( Figures 3 to 5) replaced.
  • the installation position of the magnetic jacket 60 in axial and radial terms, however, is that of Guide elements 45 comparable, so that the Magnetic jacket 60 according to the invention, the magnet coil 1 in Partially surrounds the circumferential direction.
  • the valve is largely with a plastic extrusion 50 enclosed, starting from the core 2 in axial Direction via solenoid 1 and instead of Guide elements 45 in the invention via the magnetic jacket 60 extends to the valve seat support 10, the Magnetic jacket 60 then completely axially and in, for example Circumferential direction is covered.
  • To the plastic encapsulation 50 belongs, for example, to a co-molded electric Connector 52.
  • a sheet metal blank 6 is shown, the Starting basis for the production of the magnetic jacket 60 forms.
  • This sheet blank 6 is made from a larger sheet uniform thickness according to the required dimensions e.g. punched out. Then the sheet metal blank 6 is under Rolled a mandrel into the desired shape or bent so that it takes on a shape as shown in Figure 5 is shown. With the arrows 61 is the rolling movement indicated.
  • Each individual sheet blank 6 for the production of a Magnetic jacket 60 is characterized by a specific Contouring out, with a division into three areas makes sense.
  • a central area 63 ultimately a surrounding the magnetic coil 1 in the circumferential direction
  • Sheath area 630 of the magnetic jacket 60 forms, close in the axial direction according to the installation in the valve on a first line of extension an upper and a lower edge area 64 and 65.
  • the two edge areas 64 and 65 ultimately form attachment regions 640 and 650 of the magnetic jacket 60, with which an attachment to the core 2nd and is made possible on the valve seat support 10.
  • the edge regions 64 and 65 are characterized in that they are segmented, meaning that of an upper one and lower boundary edge 66 and 67 starting from each several recesses 68 and 69 towards the middle Area 63 are introduced, the segments of the form respective edge region 64, 65.
  • the recesses 68, 69 extend from the boundary edge 66, 67 for example, first with parallel side edges that face each other later converges to a pointed recess end 70, 71 stretch directionally.
  • both edge areas 64, 65 are e.g. three recesses 68, 69 at the same distance from each other introduced so that the recesses 68 of the upper Edge area 64 exactly opposite the recesses 69 of the lower edge region 65 are formed.
  • the two edge regions 64, 65 differ. While in the lower edge area 65 to the two outer Recesses 69 each again a complete segment connects and the lateral boundary edges 72 and 73 therefore have the contour of a half recess 69, are lateral boundary edges 72, 73 of the upper edge area 64 less than a segment width away from the two outer recesses 68 provided and also rectangular to the upper boundary edge 66. Compared to the lateral boundary edges 72, 73 of the edge regions 64, 65 are the lateral boundary edges 74 and 75 of the middle area 63 deepened, which after rolling the Sheet metal blank 6, the jacket area 630 of the magnetic jacket 60 has a window 80 ( Figure 5) through which Boundary edges 74, 75 is limited.
  • the two Edge areas 64, 65 in perpendicular to the first Extension line extending second extension lines over the middle area 63 over.
  • the recess ends 70, 71 of the recesses 68, 69 are approximately at the level of Transition shoulders of the lateral boundary edges 72, 73 to the boundary edges 74, 75 of the central region 63, since the later magnetic jacket 60 also in these areas Shoulders 78, 79 ( Figure 5) should have.
  • the method of manufacturing the magnetic shell 60 is subdivided after the provision of the sheet metal blank 6 with the required contour in two essential steps.
  • a first process step the entire sheet blank 6 e.g. rolled by means of a mandrel or bent until the two side Boundary edges 72, 73 of the lower edge region 65 face directly.
  • a second Process step will be the upper and the lower Edge area 64, 65 e.g. with a clasp-like tool by deformation to a smaller outside diameter brought, the recesses 68, 69 to a minimum Width can be reduced so that the push the intervening segments closely together.
  • the resulting fastening areas 640, 650 act Collet-like and can be easily opened during assembly become. Since the attachment areas 640, 650 under Are bias, the position of the magnetic jacket 60 at the assembly of the valve on the core 2 and the Valve seat bracket 10 already well fixed. As before mentioned, two shoulders 78, 79 ( Figure 5) arise as Transitional areas of the jacket area 630 to the two Attachment areas 640 and 650, the smaller one Have outer diameter than the jacket area 630. Die Recess ends 70, 71 are in the area of Shoulders 78, 79.
  • Figure 3 is a plan view of the sheet metal blank 6 magnetic sheath produced according to FIG. 2 60 shown, while Figure 4 is a bottom view of this Magnetic jacket 60 shows.
  • Figure 5 is in turn Sectional view of the magnetic jacket 60 along the lines V-V in FIGS. 4 and 5.
  • FIG. 3 shows that the lateral boundary edges 72, 73 of the upper Edge area 64 are spaced apart so that on simple way coil pins of the magnet coil 1 through this existing space 81 axially from the magnetic jacket 60 can be performed.
  • the sectional view according to FIG. 5 indicates that the Jacket area 630 does not completely revolve, but through the window 80 is interrupted.
  • the size of the window 80 depends on the depth of the boundary edges 74, 75 of the middle area 63 on sheet metal blank 6.
  • the window 80 can e.g. take a size of about 120 °, making a third of the circumference of the jacket region 630 is open. Because of this Window 80, the magnetic coil 1 is inserted radially, the is indicated schematically in Figure 5.
  • the magnetic coil 1 can be inserted through the window 80 Jacket area 630 also in a simple manner be slightly bent.
  • the window 80 can also from seen in the circumferential direction 120 ° larger or be made smaller.
  • Figure 6 shows a second embodiment of a Sheet metal blank 6 for a magnetic jacket 60, which differs from that Sheet metal blank 6 according to Figure 2 differs in that both edge areas 64, 65 identical, but mirrored around the central area 63.
  • the upper edge region 64 is thus also an example formed that the two outer recesses 68 up to the lateral boundary edge 72, 73 each connects a complete segment. Because in the rolled State of the magnetic jacket 60 thus no more space 81 is present, the coil pins of the magnetic coil 1 in this Fall led radially sideways out of the window 80.
  • the invention is in no way related to fuel injectors limited, but generally affects everyone Electromagnetically operated valves of different types Application areas.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetically Actuated Valves (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electromagnets (AREA)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem elektromagnetisch betätigbaren Ventil nach der Gattung des Anspruchs 1 sowie von einem Verfahren zur Herstellung eines Magnetmantels für ein Ventil nach der Gattung des Anspruchs 8.The invention is based on an electromagnetic actuatable valve according to the preamble of claim 1 and of a method for producing a magnetic jacket for a valve according to the preamble of claim 8.

Bekannt sind bereits elektromagnetisch betätigbare Ventile, die eine Betätigungseinrichtung aufweisen, die zumindest eine Magnetspule, einen Magnetanker zum Öffnen und Schließen des Ventils und ein äußeres, den magnetischen Fluss leitendes Leitelement, wie z.B. ein Magnetgehäuse bzw. einen Magnetmantel oder Leitbügel umfaßt.Electromagnetically actuated valves are already known, which have an actuator, at least a magnet coil, a magnet armature for opening and closing of the valve and an external one, the magnetic flux conductive guiding element, e.g. a magnet housing or one Magnetic jacket or guide bracket includes.

Üblicherweise werden derartige Magnetgehäuse durch spanendes Oberflächenabtragen hergestellt, wobei Drehen, Fräsen, Bohren und Feinbearbeitungsschritte die bekannten Verfahren zur Herstellung eines Magnetgehäuses sind.Such magnet housings are usually machined Surface abrasion produced, whereby turning, milling, Drilling and finishing steps the known methods for the manufacture of a magnetic housing.

Des weiteren ist aus der DE-OS 40 03 229 oder der US-PS 5,544,816 bekannt, Magnetmäntel für elektromagnetisch betätigbare Ventile auch mittels Tiefziehen herzustellen. Die Magnetmäntel sehen dabei so aus, dass sie an einem axialen Ende eine weite Öffnung besitzen, um eine Magnetspule axial einführen zu können. Zum Schließen des Magnetkreises im Bereich der weiten Öffnung sind zusätzliche Deckelelemente nötig. Zum Durchführen von Spulenpins müssen extra Durchgangsöffnungen oder Durchbrüche im Magnetmantel vorgesehen werden, die durch Bohren oder Fräsen eingebracht werden.Furthermore, from DE-OS 40 03 229 or the US-PS 5,544,816 known, magnetic sheaths for electromagnetic Manufacture actuatable valves also by deep drawing. The magnetic jackets look so that they are on one have a wide opening to one axial end To be able to insert the solenoid axially. To close the Magnetic circuit in the area of the wide opening are additional Cover elements necessary. To perform coil pins you must extra through openings or openings in the magnetic jacket are provided, which are introduced by drilling or milling become.

Eine weitere Möglichkeit der Ausführung eines äußeren Magnetmantels besteht darin, dass zwei bügelförmige Leitelemente die Magnetspule teilweise umgeben, wie es aus der DE-OS 38 25 135 bekannt ist. Bei diesen Leitelementen handelt es sich beispielsweise um gestanzte und durch Prägen in die gewünschte Form gebrachte Bauteile. Auch als Sinterbügel sind derartige Leitelemente ausführbar.Another way of running an exterior Magnetic jacket consists of two bow-shaped Guiding elements partially surround the solenoid as it is made out DE-OS 38 25 135 is known. With these guiding elements it is, for example, punched and embossed components brought into the desired shape. Also as Sintering brackets of this type can be implemented.

Unabhängig von den erwähnten Magnetgehäusen ist bereits aus der DE-OS 39 04 448 bekannt, einen Magnetanker, der zusammen mit einem hülsenförmigen Verbindungsteil und einem kugelförmigen Ventilschließkörper Teil einer axial bewegbaren Ventilnadel ist, aus einem Blechstreifen mit geringer Dicke herzustellen. Dabei wird ein Blechabschnitt in gewünschter Form aus einem Blech zuerst ausgestanzt und nachfolgend derart gerollt bzw. gebogen, dass ein Magnetanker mit kreisförmigem Umfang entsteht.Regardless of the mentioned magnet housing is already out DE-OS 39 04 448 known a magnet armature that together with a sleeve-shaped connecting part and spherical valve closing body part of an axial movable valve needle is made of a sheet metal strip to produce a small thickness. This is a sheet metal section first punched out of a sheet in the desired shape and subsequently rolled or bent in such a way that a Magnetic armature with a circular circumference is created.

Ein Ventil laut Oberbegriff von Anspruch 1 ist aus der DE-A-4 800 912 bekannt.A valve according to the preamble of claim 1 is known from DE-A-4 800 912.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Ventil mit den kennzeichnenden Merkmalen des Anspruchs 1 hat den Vorteil, dass es auf sehr einfache Art und Weise herstellbar und montierbar ist. In vorteilhafter Weise ist der die Magnetspule zumindest teilweise umgebende Magnetmantel derart ausgeformt, dass in ihn die Magnetspule in radialer Richtung einführbar ist. Der Magnetmantel ist derart konzipiert, dass keine zusätzlichen Bauteile zum Schließen des Magnetkreises um die Magnetspule herum benötigt werden. Durch seine Formgebung ist der Magnetmantel ideal im Ventil montierbar.The valve according to the invention with the characteristic Features of claim 1 has the advantage that it is very is simple to manufacture and assemble. In advantageously the magnetic coil is at least partially encased magnetic jacket so shaped that in the magnetic coil can be inserted in the radial direction. The Magnetic jacket is designed so that no additional Components for closing the magnetic circuit around the magnetic coil are needed around. Due to its shape, the Magnetic jacket ideally mountable in the valve.

Ein weiterer Vorteil besteht darin, dass reduzierte Toleranzanforderungen an die Außendurchmesser von Kern und Ventilsitzträger sowie den Innendurchmesser des Magnetmantels gestellt sind, ohne dass eine Beeinträchtigung des magnetischen Übergangs zwischen diesen Bauteilen verursacht wird.Another advantage is that reduced Tolerance requirements for the outer diameter of the core and Valve seat support and the inside diameter of the Magnetic jacket are placed without any impairment the magnetic transition between these components is caused.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Ventils möglich.By the measures listed in the subclaims advantageous developments and improvements in Claim 1 specified valve possible.

In erfindungsgemäßer Weise sind die Befestigungsbereiche segmentiert ausgestaltet, wobei sich die Segmente durch mehrere Ausnehmungen in diesen Befestigungsbereichen ergeben. Die Segmente wirken spannzangenartig und können durch geringe Krafteinwirkung bei der Montage leicht geöffnet werden. Auf diese Weise können Spanbildung und das Entstehen von Kratzern vermieden werden. Da die spannzangenartigen Befestigungsbereiche unter Vorspannung stehen, ist die Lage des Magnetmantels im Ventil, z.B. am Kern nach der Montage bereits gut fixiert.The fastening areas are in the manner according to the invention designed segmented, with the segments through several recesses in these attachment areas result. The segments act like collets and can due to low force during assembly be opened. In this way, chip formation and that Avoid scratches. Since the Collet-like fastening areas under pretension the position of the magnetic casing in the valve, e.g. at the Core already well fixed after assembly.

Das erfindungsgemäße Verfahren zur Herstellung eines Magnetmantels für ein Ventil mit den kennzeichnenden Merkmalen des Anspruchs 8 hat den Vorteil, dass auf einfache Art und Weise ein Magnetmantel herstellbar ist, der in axialer Richtung und in Umfangsrichtung weitgehend eine Magnetspule umgeben kann, ohne dass zusätzliche Maßnahmen zum Schließen des Magnetkreises erforderlich sind. Der Magnetmantel kann mit dem erfindungsgemäßen Verfahren bereits derart ausgeformt werden, dass keine weiteren äußeren Magnetkreisbauteile benötigt werden und keine Durchgangsöffnungen oder Durchbrüche mit zusätzlichen spanenden Bearbeitungsverfahren, wie Fräsen oder Bohren, eingebracht werden müssen.The inventive method for producing a Magnetic jacket for a valve with the characteristic Features of claim 8 has the advantage that simple Way a magnetic jacket can be produced, which in axial direction and in the circumferential direction largely one Solenoid can surround without additional measures are required to close the magnetic circuit. The Magnetic jacket can with the inventive method are already shaped in such a way that no others outer magnetic circuit components are required and none Through openings or openings with additional machining processes, such as milling or drilling, must be introduced.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 ein bekanntes elektromagnetisch betätigbares Ventil mit zwei bügelförmigen Leitelementen als äußere Magnetflussbauteile, Figur 2 einen Blechrohling als Ausgangsbasis eines erfindungsgemäß herzustellenden Magnetmantels, Figur 3 eine Draufsicht auf einen erfindungsgemäßen Magnetmantel, Figur 4 eine Unteransicht auf diesen Magnetmantel, Figur 5 eine Schnittdarstellung des Magnetmantels entlang der Linien V-V in den Figuren 4 und 5 und Figur 6 ein zweites Ausführungsbeispiel eines Blechrohlings für einen Magnetmantel.Embodiments of the invention are in the drawing shown in simplified form and in the following Description explained in more detail. 1 shows it Known electromagnetically actuated valve with two bow-shaped guide elements as external magnetic flux components, Figure 2 shows a sheet metal blank as the basis for a 3 to be produced according to the invention Top view of a magnetic jacket according to the invention, FIG. 4 a bottom view of this magnetic jacket, Figure 5 a Sectional view of the magnetic jacket along the lines V-V in Figures 4 and 5 and Figure 6 a second Embodiment of a sheet metal blank for one Magnetic shell.

Beschreibung der AusführungsbeispieleDescription of the embodiments

In Figur 1 ist ein bekanntes elektromagnetisch betätigbares Ventil dargestellt, das zum Stand der Technik zählt und eine Möglichkeit der Anwendung eines später beschriebenen erfindungsgemäßen Magnetmantels darstellt. Das in der Figur 1 beispielsweise dargestellte elektromagnetisch betätigbare Ventil in der Form eines Einspritzventils für Brennstoffeinspritzanlagen von gemischverdichtenden, fremdgezündeten Brennkraftmaschinen hat einen von einer Magnetspule 1 umgebenen, als Brennstoffeinlaßstutzen dienenden rohrförmigen Kern 2 als sogenannten Innenpol. Ein Spulenkörper 3 nimmt eine Bewicklung der Magnetspule 1 auf. In Figure 1 is a known electromagnetically actuated Shown valve that belongs to the prior art and one Possibility of using one described later represents magnetic casing according to the invention. That in the figure 1 shown, for example, electromagnetically actuated Valve in the form of an injector for Fuel injection systems from mixture-compressing, spark-ignited internal combustion engines has one of one Solenoid 1 surrounded, as a fuel inlet port serving tubular core 2 as a so-called inner pole. On Coil body 3 receives a winding of the magnet coil 1.

Der Kern 2 verläuft bis zu einem stromabwärtigen Kernende 9 und darüber hinaus weiter in stromabwärtiger Richtung, so dass ein stromabwärts des Spulenkörpers 3 angeordnetes rohrförmiges Anschlussteil, das im weiteren Verlauf als Ventilsitzträger 10 bezeichnet ist, einteilig mit dem Kern 2 ausgebildet ist, wobei das Gesamtbauteil als Ventilrohr 12 bezeichnet wird. Als Übergang vom Kern 2 zum Ventilsitzträger 10 besitzt das Ventilrohr 12 eine ebenfalls rohrförmige, jedoch eine wesentlich dünnere Wandung als die Wandungsstärken von Kern 2 und Ventilsitzträger 10 aufweisende magnetische Drosselstelle 13. Es ist jedoch ebenso denkbar, den Kern 2 und den Ventilsitzträger 10 separat auszubilden und im Bereich der Drosselstelle 13 ein nichtmagnetisches Zwischenteil vorzusehen. Die Betätigung des Ventils erfolgt in bekannter Weise elektromagnetisch.The core 2 extends up to a downstream core end 9 and further downstream, so that is arranged downstream of the bobbin 3 tubular connector, which in the further course as Valve seat carrier 10 is designated, in one piece with the core 2nd is formed, the entire component being a valve tube 12 referred to as. As a transition from core 2 to Valve seat support 10 also has a valve tube 12 tubular, but a much thinner wall than that Wall thicknesses of core 2 and valve seat support 10 having magnetic throttle point 13. However, it is the core 2 and the valve seat carrier 10 are also conceivable to be trained separately and in the area of the throttle point 13 provide non-magnetic intermediate part. The actuation the valve is electromagnetic in a known manner.

In dem Ventilsitzträger 10 verläuft eine Längsbohrung 18, die konzentrisch zu einer Ventillängsachse 15 ausgebildet ist. In der Längsbohrung 18 ist eine z. B. rohrförmige Ventilnadel 19 angeordnet, die an ihrem stromabwärtigen Ende 20 mit einem kugelförmigen Ventilschließkörper 21, an dessen Umfang beispielsweise fünf Abflachungen 22 zum Vorbeiströmen des Brennstoffs vorgesehen sind, beispielsweise durch Schweißen verbunden ist.A longitudinal bore 18 runs in the valve seat support 10, which are formed concentrically to a longitudinal valve axis 15 is. In the longitudinal bore 18 is a z. B. tubular Valve needle 19 arranged at its downstream end 20 with a spherical valve closing body 21, on the Perimeter, for example, five flats 22 to flow past of the fuel are provided, for example by Welding is connected.

Zur axialen Bewegung der Ventilnadel 19 und damit zum Öffnen entgegen der Federkraft einer Rückstellfeder 25 bzw. Schließen des Einspritzventils dient der elektromagnetische Kreis mit der Magnetspule 1, dem Kern 2 und einem Anker 27. Der Anker 27 ist mit dem dem Ventilschließkörper 21 abgewandten Ende der Ventilnadel 19 durch eine Schweißnaht verbunden und auf den Kern 2 ausgerichtet. In das stromabwärts liegende, dem Kern 2 abgewandte Ende des Ventilsitzträgers 10 ist in der Längsbohrung 18 ein zylinderförmiger Ventilsitzkörper 29, der einen festen Ventilsitz aufweist, durch Schweißen dicht montiert.For the axial movement of the valve needle 19 and thus for opening against the spring force of a return spring 25 or Closing the injector is used for electromagnetic Circle with the magnet coil 1, the core 2 and an armature 27. The armature 27 is connected to the valve closing body 21 opposite end of the valve needle 19 by a weld connected and aligned to the core 2. In the downstream end of the core 2 facing away Valve seat support 10 is in the longitudinal bore 18 cylindrical valve seat body 29, which has a fixed Has valve seat, tightly assembled by welding.

Zur Führung des Ventilschließkörpers 21 während der Axialbewegung der Ventilnadel 19 mit dem Anker 27 entlang der Ventillängsachse 15 dient eine Führungsöffnung 32 des Ventilsitzkörpers 29. Die Führung des Ankers 27 wird beispielsweise durch Führungsnasen im Bereich der Drosselstelle 13 übernommen. Der kugelförmige Ventilschließkörper 21 wirkt mit dem sich in Strömungsrichtung kegelstumpfförmig verjüngenden Ventilsitz des Ventilsitzkörpers 29 zusammen. An seiner dem Ventilschließkörper 21 abgewandten Stirnseite ist der Ventilsitzkörper 29 mit einer beispielsweise topfförmig ausgebildeten Spritzlochscheibe 34 fest verbunden. Die Spritzlochscheibe 34 besitzt wenigstens eine, beispielsweise vier durch Erodieren oder Stanzen ausgeformte Abspritzöffnungen 35.To guide the valve closing body 21 during the Axial movement of the valve needle 19 along with the armature 27 the valve longitudinal axis 15 serves a guide opening 32 of the Valve seat body 29. The guide of the armature 27 is for example by guide lugs in the area of Throttle point 13 taken over. The spherical Valve closing body 21 interacts with the Flow direction frustoconical valve seat of the valve seat body 29 together. At its the Valve closing body 21 facing away from the front Valve seat body 29 with a cup-shaped, for example trained spray plate 34 firmly connected. The Spray plate 34 has at least one, for example four formed by eroding or stamping Spray orifices 35.

Die Einschubtiefe des Ventilsitzkörpers 29 mit der Spritzlochscheibe 34 bestimmt die Größe des Hubs der Ventilnadel 19. Dabei ist die eine Endstellung der Ventilnadel 19 bei nicht erregter Magnetspule 1 durch die Anlage des Ventilschließkörpers 21 am Ventilsitz des Ventilsitzkörpers 29 festgelegt, während sich die andere Endstellung der Ventilnadel 19 bei erregter Magnetspule 1 durch die Anlage des Ankers 17 am Kernende 9 ergibt.The insertion depth of the valve seat body 29 with the Spray plate 34 determines the size of the stroke of the Valve needle 19. The one end position is the Valve needle 19 when the solenoid 1 is not energized by the System of the valve closing body 21 on the valve seat of the Valve seat body 29 set while the other End position of the valve needle 19 when the magnet coil 1 is excited results from the installation of the armature 17 at the core end 9.

Die Magnetspule 1 ist von zwei als Bügel ausgebildeten und als ferromagnetische Elemente dienenden Leitelementen 45 umgeben, die die Magnetspule 1 in Umfangsrichtung wenigstens teilweise umgeben sowie mit einem Ende an dem Kern 2 und dem anderen Ende an dem Ventilsitzträger 10 anliegen und mit diesen z. B. durch Schweißen, Löten bzw. Kleben verbindbar sind. In dem erfindungsgemäßen Ventil sind die Leitelemente 45 durch einen erfindungsgemäß hergestellten Magnetmantel 60 (Figuren 3 bis 5) ersetzt. Die Einbaulage des Magnetmantels 60 in axialer und radialer Hinsicht ist jedoch mit der der Leitelemente 45 vergleichbar, so dass auch der erfindungsgemäße Magnetmantel 60 die Magnetspule 1 in Umfangsrichtung teilweise umgibt.The magnet coil 1 is formed by two brackets and guiding elements 45 serving as ferromagnetic elements surround the magnetic coil 1 at least in the circumferential direction partially surrounded and with one end to the core 2 and the rest at the other end on the valve seat support 10 and with this z. B. connectable by welding, soldering or gluing are. The guide elements are in the valve according to the invention 45 by a magnetic jacket 60 produced according to the invention (Figures 3 to 5) replaced. The installation position of the magnetic jacket 60 in axial and radial terms, however, is that of Guide elements 45 comparable, so that the Magnetic jacket 60 according to the invention, the magnet coil 1 in Partially surrounds the circumferential direction.

Das Ventil ist weitgehend mit einer Kunststoffumspritzung 50 umschlossen, die sich vom Kern 2 ausgehend in axialer Richtung über die Magnetspule 1 und anstelle der Leitelemente 45 bei der Erfindung über den Magnetmantel 60 bis zum Ventilsitzträger 10 erstreckt, wobei der Magnetmantel 60 dann beispielsweise vollständig axial und in Umfangsrichtung überdeckt ist. Zu der Kunststoffumspritzung 50 gehört beispielsweise ein mitangespritzter elektrischer Anschlussstecker 52.The valve is largely with a plastic extrusion 50 enclosed, starting from the core 2 in axial Direction via solenoid 1 and instead of Guide elements 45 in the invention via the magnetic jacket 60 extends to the valve seat support 10, the Magnetic jacket 60 then completely axially and in, for example Circumferential direction is covered. To the plastic encapsulation 50 belongs, for example, to a co-molded electric Connector 52.

In der Figur 2 ist ein Blechrohling 6 gezeigt, der die Ausgangsbasis zur Herstellung des Magnetmantels 60 bildet. Dieser Blechrohling 6 wird aus einem größeren Blech gleichmäßiger Dicke entsprechend den erforderlichen Maßen z.B. ausgestanzt. Anschließend wird der Blechrohling 6 unter Zuhilfenahme eines Dorns in die gewünschte Form gerollt bzw. gebogen, so dass er eine Gestalt annimmt, wie sie in Figur 5 dargestellt ist. Mit den Pfeilen 61 ist die Rollbewegung angedeutet.In Figure 2, a sheet metal blank 6 is shown, the Starting basis for the production of the magnetic jacket 60 forms. This sheet blank 6 is made from a larger sheet uniform thickness according to the required dimensions e.g. punched out. Then the sheet metal blank 6 is under Rolled a mandrel into the desired shape or bent so that it takes on a shape as shown in Figure 5 is shown. With the arrows 61 is the rolling movement indicated.

Jeder einzelne Blechrohling 6 zur Herstellung eines Magnetmantels 60 zeichnet sich durch eine spezifische Konturgebung aus, wobei eine Unterteilung in drei Bereiche sinnvoll ist. An einen mittleren Bereich 63, der letztlich einen die Magnetspule 1 in Umfangsrichtung umgebenden Mantelbereich 630 des Magnetmantels 60 bildet, schließen sich in axialer Richtung entsprechend dem Einbau im Ventil auf einer ersten Erstreckungslinie ein oberer und ein unterer Randbereich 64 und 65 an. Die beiden Randbereiche 64 und 65 bilden letztendlich Befestigungsbereiche 640 und 650 des Magnetmantels 60, mit denen eine Befestigung am Kern 2 und am Ventilsitzträger 10 ermöglicht ist.Each individual sheet blank 6 for the production of a Magnetic jacket 60 is characterized by a specific Contouring out, with a division into three areas makes sense. To a central area 63, ultimately a surrounding the magnetic coil 1 in the circumferential direction Sheath area 630 of the magnetic jacket 60 forms, close in the axial direction according to the installation in the valve on a first line of extension an upper and a lower edge area 64 and 65. The two edge areas 64 and 65 ultimately form attachment regions 640 and 650 of the magnetic jacket 60, with which an attachment to the core 2nd and is made possible on the valve seat support 10.

Die Randbereiche 64 und 65 zeichnen sich dadurch aus, dass sie segmentiert sind, was bedeutet, dass von einer oberen und unteren Begrenzungskante 66 und 67 ausgehend jeweils mehrere Ausnehmungen 68 und 69 in Richtung zum mittleren Bereich 63 eingebracht sind, die zwischen sich Segmente des jeweiligen Randbereichs 64, 65 bilden. Die Ausnehmungen 68, 69 verlaufen von der Begrenzungskante 66, 67 ausgehend beispielsweise zuerst mit parallelen Seitenkanten, die sich später konvergent auf ein spitzes Ausnehmungsende 70, 71 gerichtet erstrecken. In beiden Randbereichen 64, 65 sind z.B. drei Ausnehmungen 68, 69 im gleichen Abstand zueinander eingebracht, so dass die Ausnehmungen 68 des oberen Randbereichs 64 genau gegenüber den Ausnehmungen 69 des unteren Randbereichs 65 ausgebildet sind.The edge regions 64 and 65 are characterized in that they are segmented, meaning that of an upper one and lower boundary edge 66 and 67 starting from each several recesses 68 and 69 towards the middle Area 63 are introduced, the segments of the form respective edge region 64, 65. The recesses 68, 69 extend from the boundary edge 66, 67 for example, first with parallel side edges that face each other later converges to a pointed recess end 70, 71 stretch directionally. In both edge areas 64, 65 are e.g. three recesses 68, 69 at the same distance from each other introduced so that the recesses 68 of the upper Edge area 64 exactly opposite the recesses 69 of the lower edge region 65 are formed.

An den beiden seitlichen Begrenzungskanten 72 und 73 unterscheiden sich jedoch die beiden Randbereiche 64, 65. Während sich im unteren Randbereich 65 an die beiden äußeren Ausnehmungen 69 jeweils nochmals ein vollständiges Segment anschließt und die seitlichen Begrenzungskanten 72 und 73 daher die Kontur einer halben Ausnehmung 69 haben, sind die seitlichen Begrenzungskanten 72, 73 des oberen Randbereichs 64 weniger als eine Segmentbreite entfernt von den beiden äußeren Ausnehmungen 68 vorgesehen und außerdem rechtwinklig zur oberen Begrenzungskante 66 ausgeführt. Gegenüber den seitlichen Begrenzungskanten 72, 73 der Randbereiche 64, 65 liegen die seitlichen Begrenzungskanten 74 und 75 des mittleren Bereichs 63 vertieft, wodurch nach dem Rollen des Blechrohlings 6 der Mantelbereich 630 des Magnetmantels 60 ein Fenster 80 (Figur 5) aufweist, das durch die Begrenzungskanten 74, 75 begrenzt wird. Entsprechend der Definition der ersten Erstreckungslinie stehen die beiden Randbereiche 64, 65 in senkrecht zur ersten Erstreckungslinie verlaufenden zweiten Erstreckungslinien über den mittleren Bereich 63 über. Die Ausnehmungsenden 70, 71 der Ausnehmungen 68, 69 liegen ungefähr in Höhe der Übergangsschultern der seitlichen Begrenzungskanten 72, 73 zu den Begrenzungskanten 74, 75 des mittleren Bereichs 63, da in diesen Bereichen der spätere Magnetmantel 60 ebenfalls Schultern 78, 79 (Figur 5) aufweisen soll.On the two lateral boundary edges 72 and 73 however, the two edge regions 64, 65 differ. While in the lower edge area 65 to the two outer Recesses 69 each again a complete segment connects and the lateral boundary edges 72 and 73 therefore have the contour of a half recess 69, are lateral boundary edges 72, 73 of the upper edge area 64 less than a segment width away from the two outer recesses 68 provided and also rectangular to the upper boundary edge 66. Compared to the lateral boundary edges 72, 73 of the edge regions 64, 65 are the lateral boundary edges 74 and 75 of the middle area 63 deepened, which after rolling the Sheet metal blank 6, the jacket area 630 of the magnetic jacket 60 has a window 80 (Figure 5) through which Boundary edges 74, 75 is limited. According to the Definition of the first extension line are the two Edge areas 64, 65 in perpendicular to the first Extension line extending second extension lines over the middle area 63 over. The recess ends 70, 71 of the recesses 68, 69 are approximately at the level of Transition shoulders of the lateral boundary edges 72, 73 to the boundary edges 74, 75 of the central region 63, since the later magnetic jacket 60 also in these areas Shoulders 78, 79 (Figure 5) should have.

Das Verfahren zur Herstellung des Magnetmantels 60 untergliedert sich nach dem Bereitstellen des Blechrohlings 6 mit der entsprechend gewünschten Kontur in zwei wesentliche Schritte. In einem ersten Verfahrensschritt wird der gesamte Blechrohling 6 z.B. mittels eines Dorns gerollt bzw. gebogen bis sich die beiden seitlichen Begrenzungskanten 72, 73 des unteren Randbereichs 65 unmittelbar gegenüberstehen. In einem zweiten Verfahrensschritt werden der obere und der untere Randbereich 64, 65 z.B. mit einem spangenförmigen Werkzeug durch Verformung auf einen kleineren Außendurchmesser gebracht, wobei die Ausnehmungen 68, 69 auf eine minimale Breite reduziert werden, so dass sich die dazwischenliegenden Segmente eng aneinander schieben.The method of manufacturing the magnetic shell 60 is subdivided after the provision of the sheet metal blank 6 with the required contour in two essential steps. In a first process step the entire sheet blank 6 e.g. rolled by means of a mandrel or bent until the two side Boundary edges 72, 73 of the lower edge region 65 face directly. In a second Process step will be the upper and the lower Edge area 64, 65 e.g. with a clasp-like tool by deformation to a smaller outside diameter brought, the recesses 68, 69 to a minimum Width can be reduced so that the push the intervening segments closely together.

Die entstehenden Befestigungsbereiche 640, 650 wirken spannzangenartig und können bei der Montage leicht geöffnet werden. Da die Befestigungsbereiche 640, 650 unter Vorspannung stehen, ist die Lage des Magnetmantels 60 bei der Montage des Ventils auf dem Kern 2 und dem Ventilsitzträger 10 bereits gut fixiert. Wie bereits erwähnt, entstehen zwei Schultern 78, 79 (Figur 5) als Übergangsbereiche des Mantelbereichs 630 zu den beiden Befestigungsbereichen 640 und 650, die einen kleineren Außendurchmesser aufweisen als der Mantelbereich 630. Die Ausnehmungsenden 70, 71 liegen dabei im Bereich der Schultern 78, 79.The resulting fastening areas 640, 650 act Collet-like and can be easily opened during assembly become. Since the attachment areas 640, 650 under Are bias, the position of the magnetic jacket 60 at the assembly of the valve on the core 2 and the Valve seat bracket 10 already well fixed. As before mentioned, two shoulders 78, 79 (Figure 5) arise as Transitional areas of the jacket area 630 to the two Attachment areas 640 and 650, the smaller one Have outer diameter than the jacket area 630. Die Recess ends 70, 71 are in the area of Shoulders 78, 79.

In Figur 3 ist eine Draufsicht auf den aus dem Blechrohling 6 gemäß Figur 2 erfindungsgemäß hergestellten Magnetmantel 60 dargestellt, während Figur 4 eine Unteransicht auf diesen Magnetmantel 60 zeigt. Figur 5 wiederum ist eine Schnittdarstellung des Magnetmantels 60 entlang der Linien V-V in den Figuren 4 und 5. Der Figur 3 ist entnehmbar, dass sich die seitlichen Begrenzungskanten 72, 73 des oberen Randbereichs 64 beabstandet gegenüberstehen, so dass auf einfache Weise Spulenpins der Magnetspule 1 durch diesen bestehenden Zwischenraum 81 axial aus dem Magnetmantel 60 geführt werden können.In Figure 3 is a plan view of the sheet metal blank 6 magnetic sheath produced according to FIG. 2 60 shown, while Figure 4 is a bottom view of this Magnetic jacket 60 shows. Figure 5 is in turn Sectional view of the magnetic jacket 60 along the lines V-V in FIGS. 4 and 5. FIG. 3 shows that the lateral boundary edges 72, 73 of the upper Edge area 64 are spaced apart so that on simple way coil pins of the magnet coil 1 through this existing space 81 axially from the magnetic jacket 60 can be performed.

Die Schnittdarstellung gemäß Figur 5 deutet an, dass der Mantelbereich 630 nicht vollständig umläuft, sondern durch das Fenster 80 unterbrochen ist. Die Größe des Fensters 80 richtet sich nach der Tiefe der Begrenzungskanten 74, 75 des mittleren Bereichs 63 am Blechrohling 6. Das Fenster 80 kann z.B. eine Größe von ca. 120° einnehmen, so dass ein Drittel des Umfangs des Mantelbereichs 630 offen ist. Durch dieses Fenster 80 wird die Magnetspule 1 radial eingeschoben, die in Figur 5 schematisch angedeutet ist. Zum vereinfachten Einschieben der Magnetspule 1 durch das Fenster 80 kann der Mantelbereich 630 auch auf einfache Art und Weise geringfügig aufgebogen werden. Das Fenster 80 kann auch von in Umfangsrichtung gesehen 120° abweichend größer oder kleiner ausgebildet sein.The sectional view according to FIG. 5 indicates that the Jacket area 630 does not completely revolve, but through the window 80 is interrupted. The size of the window 80 depends on the depth of the boundary edges 74, 75 of the middle area 63 on sheet metal blank 6. The window 80 can e.g. take a size of about 120 °, making a third of the circumference of the jacket region 630 is open. Because of this Window 80, the magnetic coil 1 is inserted radially, the is indicated schematically in Figure 5. For the simplified The magnetic coil 1 can be inserted through the window 80 Jacket area 630 also in a simple manner be slightly bent. The window 80 can also from seen in the circumferential direction 120 ° larger or be made smaller.

Figur 6 zeigt ein zweites Ausführungsbeispiel eines Blechrohlings 6 für einen Magnetmantel 60, der sich von dem Blechrohling 6 nach Figur 2 dadurch unterscheidet, dass beide Randbereiche 64, 65 identisch, allerdings gespiegelt um den mittleren Bereich 63 ausgeführt sind. Bei diesem Beispiel ist also auch der obere Randbereich 64 derart ausgebildet, dass sich an die beiden äußeren Ausnehmungen 68 bis zur seitlichen Begrenzungskante 72, 73 hin jeweils noch ein vollständiges Segment anschließt. Da im gerollten Zustand des Magnetmantels 60 somit kein Zwischenraum 81 mehr vorliegt, werden die Spulenpins der Magnetspule 1 in diesem Fall radial seitwärts aus dem Fenster 80 herausgeführt.Figure 6 shows a second embodiment of a Sheet metal blank 6 for a magnetic jacket 60, which differs from that Sheet metal blank 6 according to Figure 2 differs in that both edge areas 64, 65 identical, but mirrored around the central area 63. With this The upper edge region 64 is thus also an example formed that the two outer recesses 68 up to the lateral boundary edge 72, 73 each connects a complete segment. Because in the rolled State of the magnetic jacket 60 thus no more space 81 is present, the coil pins of the magnetic coil 1 in this Fall led radially sideways out of the window 80.

Die Erfindung ist keinesfalls auf Brennstoffeinspritzventile beschränkt, sondern betrifft allgemein alle elektromagnetisch betätigbaren Ventile unterschiedlicher Anwendungsgebiete.The invention is in no way related to fuel injectors limited, but generally affects everyone Electromagnetically operated valves of different types Application areas.

Claims (12)

  1. Electromagnetically activated valve, in particular injection valve, for fuel injection systems of internal combustion engines, having a valve longitudinal axis (15), having an electromagnetic circuit which comprises at least one solenoid (1), a core (2) which serves as an internal pole, and an armature (27), and comprises a magnet casing (60) which at least partially surrounds the solenoid (1), the opening and closing of the valve at a valve seat (29) being brought about by means of the armature (27), and the magnet casing (60) having a central casing region (630) which is adjoined in the axial direction, on both sides, by attachment regions (640, 650) which have a smaller external diameter than the casing region (630), the magnet casing (60) being capable of being manufactured from a sheet-metal blank (6) by means of rolling or bending, characterized in that the attachment regions (640, 650) are segmented.
  2. Valve according to Claim 1, characterized in that the central casing region (630) is interrupted in the circumferential direction.
  3. Valve according to Claim 2, characterized in that the casing region (630) rotates through approximately 240°, and thus has a window (80) of approximately 120°.
  4. Valve according to one of the preceding claims, characterized in that the solenoid (1) is held in a coil former (3), and the coil former (3) has a larger external diameter than the two attachment regions (640, 650).
  5. Valve according to Claim 1, characterized in that the attachment regions (640, 650) each comprise four segments which lie between cut-outs (68, 69).
  6. Valve according to Claim 5, characterized in that the cut-outs (68, 69) run axially over the entire length of the attachment regions (640, 650) and radially over the entire material thickness of the attachment regions (640, 650).
  7. Valve according to Claim 1, characterized in that the one attachment region (640) of the magnet casing (60) bears against the core (2), and the other attachment region (650) bears against a valve seat carrier (10).
  8. Method for manufacturing a magnet casing for a valve, in particular for an electromagnetically activated valve according to Claims 1 to 7, the magnet casing (60) at least partially surrounding the solenoid (1), characterized in that
    a) a sheet-metal blank (6) is punched out of a metal sheet in a first method step, the sheet-metal blank (6) comprising a central region (63) and two edge regions (64, 65) which fix to one another and adjoin the region (63) on a first extent line, and the edge regions (64, 65) beyond the central region (63) on second extent lines which are perpendicular to the first extent line, and a plurality of cut-outs (68, 69) are provided in the edge regions (64, 65),
    b) in a second method step the entire sheet-metal blank (6) is given a circular shape by rolling or bending, and
    c) in a third method step the edge regions (64, 65) are shaped into a smaller external diameter, the cut-outs (68, 69) being reduced to a minimum width so that finally a magnet casing (60) is produced which has a central casing region (630) which is adjoined, on two opposite sides, by attachment regions (640, 650) which have a smaller external diameter than the casing region (630).
  9. Method according to Claim 8, characterized in that the sheet-metal blank (6) is cut out by means of punching.
  10. Method according to Claim 8, characterized in that the cut-outs (68, 69) of the edge regions (64, 65) are provided in such a way that at first there are parallel side edges starting from boundary edges (66, 67) of the sheet-metal blank (6) and they later extend in a fashion which is directed so as to be convergent at a pointed end (70, 71) of a cut-out.
  11. Method according to Claim 10, characterized in that at at least one edge region (64, 65) there are lateral boundary edges (72, 73) in the direction of the second extent line, said edges having the contour of half a cut-out (68, 69).
  12. Method according to Claim 10, characterized in that at at least one edge region (64, 65) there are lateral boundary edges (72, 73) in the direction of the second extent line, said edges being formed in such a way that they are located opposite one another at a distance, after the rolling or bending.
EP99960808A 1998-12-29 1999-10-22 Electromagnetic actuating valve and method for producing a magnetic casing for a valve Expired - Lifetime EP1068441B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19860631 1998-12-29
DE19860631A DE19860631A1 (en) 1998-12-29 1998-12-29 Electromagnetically actuated valve and method for producing a magnetic jacket for a valve
PCT/DE1999/003391 WO2000039448A1 (en) 1998-12-29 1999-10-22 Electromagnetic actuating valve and method for producing a magnetic casing for a valve

Publications (2)

Publication Number Publication Date
EP1068441A1 EP1068441A1 (en) 2001-01-17
EP1068441B1 true EP1068441B1 (en) 2004-09-01

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EP99960808A Expired - Lifetime EP1068441B1 (en) 1998-12-29 1999-10-22 Electromagnetic actuating valve and method for producing a magnetic casing for a valve

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US (2) US6341759B1 (en)
EP (1) EP1068441B1 (en)
JP (1) JP2002533633A (en)
KR (1) KR20010041413A (en)
CN (1) CN1115478C (en)
BR (1) BR9908376A (en)
DE (2) DE19860631A1 (en)
RU (1) RU2239087C2 (en)
WO (1) WO2000039448A1 (en)

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US7324419B2 (en) * 2004-12-11 2008-01-29 Hewlett-Packard Development Company, L.P. Focus control via AC input signal
DE102006006031B4 (en) 2005-04-20 2009-12-24 Bürkert Werke GmbH & Co. KG Electromagnet unit and method for producing such a solenoid unit and a magnet housing for such a solenoid unit
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DE102008010976A1 (en) * 2008-02-25 2009-08-27 Robert Bosch Gmbh Method for straightening an elongated component
US20100314568A1 (en) * 2009-06-15 2010-12-16 South Bend Controls, Inc. Solenoid coil
JP5389560B2 (en) 2009-07-23 2014-01-15 株式会社ケーヒン Electromagnetic fuel injection valve
DE102009042889A1 (en) * 2009-09-24 2011-06-09 Hydraulik-Ring Gmbh Cartridge valve e.g. 4/2-way-valve, for controlling vane-type camshaft adjuster, has bush including pipe rolled and punched from sheet metal, and piston axially guided in bush so that drain edges are positioned opposite to openings in bush
DE102016208288A1 (en) 2016-05-13 2017-11-16 Robert Bosch Gmbh Injector with improved magnetic actuator
US10871242B2 (en) 2016-06-23 2020-12-22 Rain Bird Corporation Solenoid and method of manufacture
US10980120B2 (en) 2017-06-15 2021-04-13 Rain Bird Corporation Compact printed circuit board
CN107091184A (en) * 2017-07-03 2017-08-25 东莞市盈森汽车电喷科技有限公司 Fuel injector high-performance magnetism line structure
DE102018200084B4 (en) * 2018-01-04 2021-09-16 Vitesco Technologies GmbH Method for producing an electromagnetic valve arrangement and electromagnetic valve arrangement
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Also Published As

Publication number Publication date
US6745457B2 (en) 2004-06-08
US6341759B1 (en) 2002-01-29
DE59910397D1 (en) 2004-10-07
EP1068441A1 (en) 2001-01-17
CN1292064A (en) 2001-04-18
BR9908376A (en) 2000-10-31
JP2002533633A (en) 2002-10-08
CN1115478C (en) 2003-07-23
KR20010041413A (en) 2001-05-15
RU2239087C2 (en) 2004-10-27
WO2000039448A1 (en) 2000-07-06
US20020040524A1 (en) 2002-04-11
DE19860631A1 (en) 2000-07-06

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