EP2370675B1 - Electromagnetic actuating unit for a hydraulic directional control valve and method for the assembly thereof - Google Patents
Electromagnetic actuating unit for a hydraulic directional control valve and method for the assembly thereof Download PDFInfo
- Publication number
- EP2370675B1 EP2370675B1 EP09736418.6A EP09736418A EP2370675B1 EP 2370675 B1 EP2370675 B1 EP 2370675B1 EP 09736418 A EP09736418 A EP 09736418A EP 2370675 B1 EP2370675 B1 EP 2370675B1
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- European Patent Office
- Prior art keywords
- unit
- yoke
- pole core
- armature
- coil
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- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims 2
- 230000001070 adhesive effect Effects 0.000 claims 2
- 230000004907 flux Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000003860 storage Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
- F01L2001/3443—Solenoid driven oil control valves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
- H01F2007/085—Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
- H01F2007/163—Armatures entering the winding with axial bearing
-
- 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
Definitions
- the invention relates to an electromagnetic actuator for a hydraulic directional control valve according to the preamble of claim 1 and a method for its assembly.
- Such directional control valves are used for example in internal combustion engines for controlling hydraulic camshaft adjusters.
- the US 2004/257185 A1 shows a proportional solenoid valve of a camshaft adjusting device.
- a proportional solenoid valve of a camshaft adjusting device for motor vehicles has a valve housing in which a piston is displaceable and which has a plurality of connections, via which a hydraulic oil can be supplied.
- the proportional solenoid valve further comprises a solenoid part, with which can be adjusted via a plunger of the piston.
- the plunger is mounted in an axial bore in a housing of the solenoid part, whereby it is axially displaceable.
- the DE 102 11 467 A1 shows a camshaft adjuster with an electromagnet, which is designed as a pushing proportional solenoid.
- the proportional magnet has a magnet armature which sits firmly on an armature tappet, which is guided through a pole core and rests with a free end face on a control piston or on a fixedly connected to this part.
- the DE 101 53 019 A1 shows an electromagnet, which is particularly suitable as a proportional solenoid for actuating a hydraulic valve.
- the electromagnet comprises a hollow cylindrical bobbin, which is bounded by an upper pole piece and a lower pole piece.
- the electromagnet is enclosed by a magnet housing.
- the bobbin magnetically acts on a magnetic armature, which forwards the magnetic force via a push rod for actuating the hydraulic valve.
- the push rod is mounted in an axial bore in the lower pole piece, whereby it is axially displaceable.
- the DE 10 2004 057 873 A1 relates to a poppet valve with a conduit system for passing an influent medium.
- the seat valve has a seat and an adjustable closing element in the piping system.
- the adjustable closure element is actuated by means of an electromagnetic actuator.
- the electromagnetic setting device comprises an armature housing, in which an armature is arranged adjustable in the direction of a coil axis.
- the armature is connected to an actuating element which actuates the closing element.
- the actuator is mounted in an axial bore in the housing of the electromagnetic actuator, whereby it is axially displaceable.
- the DE 10 2005 048 732 A1 relates to an electromagnetic actuator of a hydraulic directional control valve.
- the electromagnetic actuator comprises an armature, which is arranged axially displaceably within an armature space, and a pole core, which is arranged in a receptacle and limits the armature space in a direction of movement of the armature.
- the electromagnetic actuator comprises a coil, which is preferably encapsulated with a non-magnetizable material, so that a bobbin is formed.
- the anchor is mounted in a sliding sleeve, whereby it is axially displaceable friction.
- the JP 2005-188630 A shows a hydraulic directional control valve with an electromagnetic actuator.
- the electromagnetic actuator comprises a coil for generating a magnetic field, which is on an axially displaceable Anchor acts.
- the armature comprises an actuating element which actuates the hydraulic directional control valve.
- the actuator is mounted in an axial bore in the housing of the electromagnetic actuator, whereby it is axially displaceable.
- Fig. 1 shows a further electromagnetic actuator, a so-called central magnet, according to the prior art in a longitudinal sectional view.
- This central magnet is designed for setting a designed as a central valve hydraulic directional control valve, which is arranged radially within an inner rotor of a device for variably setting the timing of an internal combustion engine.
- the electromagnetic actuator initially comprises a coil 01, which is electrically powered via a plug contact 02.
- the coil 01 is disposed within a bobbin 03, which is made by overmolding the coil 01 with a plastic.
- the magnetic field which can be generated by the coil 01 is transmitted via a soft iron circle, which consists of a yoke 04, a yoke plate 06, a pole core 07 and a housing 08, to an axially mounted magnet armature 09.
- the magnetic field exerts a magnetic force on the magnet armature 09 via an air gap between the pole core 07 and the magnet armature 09.
- This magnetic force is transmitted via a pressure pin 11 of the magnet armature 09 to a piston of the central valve (not shown).
- the electromagnetic actuator is attached via a flange 12 of the housing 08 to the central valve or to a housing surrounding the central valve.
- the magnetic field which can be generated by the coil 01 does not act completely in the displacement direction of the magnet armature 09, which is caused by an eccentricity of the magnet armature 09.
- This eccentricity is due on the one hand by a game of magnet armature 09 and the pressure pin 11 in the storage.
- the eccentricity is a consequence of a deviation from the coaxiality between an armature bearing 13 and a pole core bearing 14. This deviation may be quite large depending on the assembly concept and the tolerances of the components of the electromagnetic actuator. Due to the eccentricity of the magnet armature 09, parts of the magnetic field which can be generated by the coil 01 act laterally on the magnet armature Magnetic armature 09, whereby laterally acting on the armature 09 forces are generated.
- the object of the present invention is based on the in Fig. 1 shown electromagnetic actuator is to provide an improved electromagnetic actuator, which is due to greater possible tolerances of the individual components on the one hand particularly inexpensive to produce, on the other hand, by a good concentricity of the bearings has a long life.
- an electromagnetic setting unit in particular a central magnet, with the features of claim 1 and by a method for their assembly with the features of the method claim 8.
- the electromagnetic actuator according to the invention in particular the central magnet is used for placement a designed as a central valve hydraulic directional valve, wherein the central valve is disposed radially within an inner rotor of a device for variably setting the timing of an internal combustion engine.
- the central magnet initially comprises a coil in a known manner, with which a magnetic field can be generated.
- the central magnet further comprises an armature unit with an armature and a pressure pin.
- the pressure pin forms an actuator of the central magnet. With the help of the pressure pin can be acted on the central valve to adjust this.
- the armature unit is slidably mounted in two bearings along its axis.
- This axis is usually formed by an axis of symmetry of the armature unit, which in a typical ideal design of central magnet is identical to the axis of symmetry of the armature and / or the coil.
- the anchor acts on the pressure pin, which dictates the axial displacement movement.
- the armature and the pressure pin execute the axial displacement movement together.
- the armature is in the magnetic field of the coil, whereby a magnetic force acts on it, which causes the displacement movement.
- the pressure pin follows the axial displacement movement of the armature due to the fixed connection with this.
- the anchor unit is supported by two bearings.
- a first bearing point is provided in a yoke unit, in which the armature is mounted axially displaceable.
- a second, provided in a Polkerntician storage serves as storage for the firmly connected to the anchor pressure pin. Through this second bearing point of the pressure pin is passed.
- the storage allows axial displacement movement of the pressure pin, d. H. a movement in the direction of its longitudinal axis.
- the pressure pin is supported by two bearings and passed through a central bore of the anchor and in this fixed, so that the anchor is mounted firmly on the pressure pin.
- the invention can be used particularly advantageously, because the pressure pin itself forms the longitudinal axis of the anchor unit and at least the anchor does not contribute to the storage as a toleranced part.
- At least one of the two bearing points is radially exposed during assembly, ie "floating".
- the fixation can be done for example by gluing, soldering, welding, embossing, flanging or clamping.
- the orientation of the bearings is realized in a preferred embodiment of the invention by a centering, which is introduced as a centering aid in the coil and in which the bearings are aligned coaxially with the longitudinal axis of the anchor unit. But it is also possible to realize the orientation of the bearings via a mounting device which takes over the alignment.
- the coil is preferably arranged within a bobbin and has a hollow cylindrical basic shape.
- the armature, a yoke unit with yoke and cover, and a pole core unit with a pole core and a magnet housing are preferably arranged in the hollow hollow cylindrical basic shape of the bobbin. This ensures an efficient function, compact design and cost-effective installation of the central magnet.
- the armature, the yoke and the pole core are rotationally symmetrical, wherein the axes of rotation of the hollow cylindrical basic shape of the bobbin, the armature, the yoke and the pole core coincide. These axes of rotation form the axis of the central magnet, in which the armature translates with the pressure pin.
- the electromagnetic actuator is particularly suitable for providing a designed as a central valve hydraulic directional control valve.
- the central valve is arranged radially inside an inner rotor of a device for variably setting the control times of an internal combustion engine.
- Such actuators are also referred to as central magnet.
- Fig. 1 shows central magnet for a central valve for the variable adjustment of the control times of an internal combustion engine, as it is known from the prior art and has already been explained in the introduction to the description.
- the several embodiments of the central magnet according to the invention which in the Fig. 2 to 11 first described (as well as in Fig. 1 shown central magnet according to the prior art) a coil 01, a plug contact 02, a bobbin 03, a yoke 04, a yoke plate 06, a pole core 07, a housing 08, a magnet armature 09 and a pressure pin 11.
- the functional relationship of the said components is similar to the functional relationship of the components of Fig. 1 shown central magnet according to the prior art.
- Anchor 09 and push pin 11 form an anchor unit.
- the anchor unit can also be made in one piece in modifications.
- the yoke 04 and the yoke plate 06 form a yoke unit, which is preferably pre-assembled.
- the pole core 07 and the housing 08 form a pole core unit.
- the armature 09 has a central bore 18 through which the pressure pin 11 is passed and axially fixed.
- the pressure pin 11 is in a first bearing 16, which is located in the yoke 04 and in a second bearing 17, which is provided in the pole core 07, stored.
- a centering sleeve 19 is provided, through which a centering of the yoke unit and Polkernech and thereby a coaxial alignment of the bearings 16, 17 takes place during assembly.
- the yoke unit with yoke 04 and yoke plate 06 and the pole core unit with pole core 07 and housing 08 are mounted floatingly mounted, aligned during assembly via the centering sleeve 19 and axially fixed by pressing the yoke unit and the pole core unit into the centering sleeve.
- the yoke unit is fixed to a fixing point 21, the pole core unit to a fixing point 22 by press-fitting.
- Fig. 3 a second preferred embodiment of the invention is shown.
- the coaxial alignment of the bearings 16, 17 is again via the centering sleeve 19.
- the yoke unit with yoke 04 and yoke plate 06 is mounted floating.
- a fixing of the bearings 16, 17 takes place by gluing the yoke unit on the pole core unit at a splice 26.
- the splice between the yoke unit and Polkernech could also in an alternative embodiment within the housing 08 lie by the yoke plate 06 is glued with its front side in a peripheral extension 27 of the housing ( Fig. 5 ).
- FIG. 7 shows the fixation of the pole core unit and the yoke unit by transverse force-free round beading of the edge extension 27 via the yoke unit.
- Fig. B shows the detail of the fixation site.
- FIG. 8 shows Fig. 8 in which 27 retaining lugs 29 are formed on the edge extension. A fixation of the pole core unit and the yoke unit takes place in this embodiment by transverse force-free folding of the retaining lugs 29 via the yoke unit.
- Fig. B) shows the actuator in a spatial view.
- the yoke 04 is mounted floating and mounted on the centering sleeve 19 during assembly. Subsequently, the axial fixation by means of a yoke plate, which is designed as a lid 31.
- the lid 31 spans the entire yoke 04 and is caulked at a fixing point 32 with the housing 08.
- FIG Fig. 10 Another possibility of assembly is the floating support of the pole core 07 during assembly, as shown in FIG Fig. 10 is shown.
- Figure b) shows the detail of the fixation site.
- the yoke unit is connected to the housing 08, for example by caulking.
- the pole core 07 is mounted floating in a clearance 33 and is glued after alignment either in the clearance fit 33 or glued or soldered to a fixing point 34.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Valve Device For Special Equipments (AREA)
Description
Die Erfindung betrifft eine elektromagnetische Stelleinheit für ein hydraulisches Wegeventil gemäß dem Oberbegriff des Anspruchs 1 und ein Verfahren zu dessen Montage.The invention relates to an electromagnetic actuator for a hydraulic directional control valve according to the preamble of claim 1 and a method for its assembly.
Derartige Wegeventile werden beispielsweise in Brennkraftmaschinen zur Ansteuerung von hydraulischen Nockenwellenverstellern verwendet.Such directional control valves are used for example in internal combustion engines for controlling hydraulic camshaft adjusters.
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Aus der
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Die Aufgabe der vorliegenden Erfindung besteht ausgehend von der in
Die Aufgabe wird durch eine elektromagnetische Stelleinheit, insbesondere eines Zentralmagneten, mit den Merkmalen des Anspruchs 1 und durch ein Verfahren zu deren Montage mit den Merkmalen des Verfahrensanspruchs 8 gelöst.The object is achieved by an electromagnetic setting unit, in particular a central magnet, with the features of claim 1 and by a method for their assembly with the features of the method claim 8.
Die erfindungsgemäße elektromagnetische Stelleinheit, insbesondere der Zentralmagnet dient zum Stellen eines als Zentralventil ausgebildeten hydraulischen Wegeventils, wobei das Zentralventil radial innerhalb eines Innenrotors einer Vorrichtung zur variablen Einstellung der Steuerzeiten einer Brennkraftmaschine angeordnet ist. Der Zentralmagnet umfasst zunächst in bekannter Weise eine Spule, mit welcher ein magnetisches Feld erzeugt werden kann. Der Zentralmagnet umfasst weiterhin eine Ankereinheit mit einem Anker und einem Druckstift. Der Druckstift bildet einen Aktuator des Zentralmagneten. Mit Hilfe des Druckstiftes kann auf das Zentralventil eingewirkt werden, um dieses zu verstellen. Hierfür ist die Ankereinheit entlang ihrer Achse verschiebbar in zwei Lagerstellen gelagert.The electromagnetic actuator according to the invention, in particular the central magnet is used for placement a designed as a central valve hydraulic directional valve, wherein the central valve is disposed radially within an inner rotor of a device for variably setting the timing of an internal combustion engine. The central magnet initially comprises a coil in a known manner, with which a magnetic field can be generated. The central magnet further comprises an armature unit with an armature and a pressure pin. The pressure pin forms an actuator of the central magnet. With the help of the pressure pin can be acted on the central valve to adjust this. For this purpose, the armature unit is slidably mounted in two bearings along its axis.
Diese Achse ist üblicherweise durch eine Symmetrieachse der Ankereinheit gebildet, die bei einer typischen idealen Konstruktion von Zentralmagneten mit der Symmetrieachse des Ankers und/oder der Spule identisch ist. Um den Druckstift axial zu verschieben, wirkt der Anker auf den Druckstift ein, welcher die axiale Verschiebebewegung vorgibt. Der Anker und der Druckstift führen die axiale Verschiebebewegung gemeinsam aus. Der Anker befindet sich im magnetischen Feld der Spule, wodurch eine Magnetkraft auf ihn einwirkt, welche die Verschiebebewegung verursacht. Der Druckstift folgt der axialen Verschiebebewegung des Ankers aufgrund der festen Verbindung mit diesem.This axis is usually formed by an axis of symmetry of the armature unit, which in a typical ideal design of central magnet is identical to the axis of symmetry of the armature and / or the coil. To move the pressure pin axially, the anchor acts on the pressure pin, which dictates the axial displacement movement. The armature and the pressure pin execute the axial displacement movement together. The armature is in the magnetic field of the coil, whereby a magnetic force acts on it, which causes the displacement movement. The pressure pin follows the axial displacement movement of the armature due to the fixed connection with this.
Die Ankereinheit ist von zwei Lagerstellen gelagert. Dabei ist eine erste Lagerstelle in einer Jocheinheit vorgesehen, in welcher der Anker axial verschiebbar gelagert ist. Eine zweite, in einer Polkerneinheit vorgesehene Lagerstelle dient als Lagerung für den mit dem Anker fest verbundenen Druckstift. Durch diese zweite Lagerstelle ist der Druckstift hindurchgeführt. Die Lagerung ermöglicht eine axiale Verschiebebewegung des Druckstiftes, d. h. eine Bewegung in Richtung seiner Längsachse.The anchor unit is supported by two bearings. In this case, a first bearing point is provided in a yoke unit, in which the armature is mounted axially displaceable. A second, provided in a Polkerneinheit storage serves as storage for the firmly connected to the anchor pressure pin. Through this second bearing point of the pressure pin is passed. The storage allows axial displacement movement of the pressure pin, d. H. a movement in the direction of its longitudinal axis.
In einer anderen Ausführungsform ist der Druckstift von beiden Lagerstellen gelagert und durch eine Zentralbohrung des Ankers hindurchgeführt und in dieser fixiert, so dass der Anker fest auf dem Druckstift gelagert ist. Bei dieser Ausführungsform lässt sich die Erfindung besonders vorteilhaft anwenden, weil der Druckstift selbst die Längsachse der Ankereinheit bildet und zumindest der Anker als toleranzbehaftetes Teil nicht zur Lagerung beiträgt.In another embodiment, the pressure pin is supported by two bearings and passed through a central bore of the anchor and in this fixed, so that the anchor is mounted firmly on the pressure pin. In this embodiment, the invention can be used particularly advantageously, because the pressure pin itself forms the longitudinal axis of the anchor unit and at least the anchor does not contribute to the storage as a toleranced part.
Erfindungsgemäß ist mindestens eine der beiden Lagerstellen während der Montage radial freigestellt, also "schwimmend". Während der Montage erfolgt die koaxiale Ausrichtung der beiden Lagerstellen zueinander und anschließend eine Fixierung der freigestellten Lagerstelle. Die Fixierung kann beispielsweise durch Kleben, Löten, Schweißen, Verprägen, Bördeln oder Klemmen erfolgen.According to the invention, at least one of the two bearing points is radially exposed during assembly, ie "floating". During assembly, the coaxial alignment of the two bearing points to each other and then fixation of the exempted bearing point. The fixation can be done for example by gluing, soldering, welding, embossing, flanging or clamping.
Die Ausrichtung der Lagerstellen wird in einer bevorzugten Ausführungsform der Erfindung durch eine Zentrierhülse realisiert, die als Zentrierhilfe in die Spule eingebracht wird und in welcher die Lagerstellen koaxial mit der Längsachse der Ankereinheit ausgerichtet werden. Es ist aber ebenso möglich, die Ausrichtung der Lagerstellen über eine Montagevorrichtung zu realisieren, welche die Ausrichtung übernimmt.The orientation of the bearings is realized in a preferred embodiment of the invention by a centering, which is introduced as a centering aid in the coil and in which the bearings are aligned coaxially with the longitudinal axis of the anchor unit. But it is also possible to realize the orientation of the bearings via a mounting device which takes over the alignment.
Die Spule ist bevorzugt innerhalb eines Spulenkörpers angeordnet und weist eine hohlzylindrische Grundform auf. Der Anker, eine Jocheinheit mit Joch und Deckel, und eine Polkerneinheit mit einem Polkern und einem Magnetgehäuse sind bevorzugt im Hohlraum der hohlzylindrischen Grundform des Spulenkörpers angeordnet. Hierdurch ist eine effiziente Funktion, kompakte Bauweise und kostengünstige Montage des Zentralmagneten gewährleistet. Hierbei sind der Anker, das Joch und der Polkern rotationssymmetrisch ausgeführt, wobei die Rotationsachsen der hohlzylindrischen Grundform des Spulenkörpers, des Ankers, des Jochs und des Polkernes zusammenfallen. Diese Rotationsachsen bilden die Achse des Zentralmagneten, in welcher sich der Anker mit dem Druckstift translatorisch bewegt.The coil is preferably arranged within a bobbin and has a hollow cylindrical basic shape. The armature, a yoke unit with yoke and cover, and a pole core unit with a pole core and a magnet housing are preferably arranged in the hollow hollow cylindrical basic shape of the bobbin. This ensures an efficient function, compact design and cost-effective installation of the central magnet. Here, the armature, the yoke and the pole core are rotationally symmetrical, wherein the axes of rotation of the hollow cylindrical basic shape of the bobbin, the armature, the yoke and the pole core coincide. These axes of rotation form the axis of the central magnet, in which the armature translates with the pressure pin.
Die elektromagnetische Stelleinheit ist besonders für das Stellen eines als Zentralventil ausgebildeten hydraulischen Wegeventils geeignet. Das Zentralventil ist radial innerhalb eines Innenrotors einer Vorrichtung zur variablen Einstellung der Steuerzeiten einer Brennkraftmaschine angeordnet. Derartige Stelleinheiten werden auch als Zentralmagnet bezeichnet.The electromagnetic actuator is particularly suitable for providing a designed as a central valve hydraulic directional control valve. The central valve is arranged radially inside an inner rotor of a device for variably setting the control times of an internal combustion engine. Such actuators are also referred to as central magnet.
Weitere Vorteile, Einzelheiten und Weiterbildungen der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsformen, unter Bezugnahme auf die Zeichnung.Further advantages, details and developments of the present invention will become apparent from the following description of preferred embodiments, with reference to the drawings.
Es zeigen:
- Fig. 1:
- einen Zentralmagneten für ein Zentralventil gemäß dem Stand der Technik;
- Fig. 2:
- eine erste Ausführungsform der Erfindung mit verpressten Komponenten;
- Fig. 3:
- eine zweite Ausführungsform der Erfindung mit zwei Klebestellen;
- Fig. 4:
- eine dritte Ausführungsform der Erfindung mit verklebten Komponenten;
- Fig. 5:
- eine vierte Ausführungsform der Erfindung mit einer Klebestelle zwischen Jocheinheit und Polkerneinheit;
- Fig. 6:
- eine fünfte Ausführungsform der Erfindung mit einer Lötstelle zwischen Jocheinheit und Polkerneinheit;
- Fig. 7:
- zwei Abbildungen einer sechsten Ausführungsform der Erfindung mit einer Bördelstelle zwischen Jocheinheit und Polkerneinheit;
- Fig. 8:
- zwei Abbildungen einer siebten Ausführungsform der Erfindung mit Haltenasen;
- Fig. 9:
- eine achte Ausführungsform der Erfindung mit verpressten Komponenten;
- Fig. 10:
- zwei Abbildungen einer neunten Ausführungsform der Erfindung mit einer Klebestelle zwischen Polkern und Gehäuse.
- Fig. 1:
- a central magnet for a central valve according to the prior art;
- Fig. 2:
- a first embodiment of the invention with compressed components;
- 3:
- a second embodiment of the invention with two splices;
- 4:
- a third embodiment of the invention with bonded components;
- Fig. 5:
- a fourth embodiment of the invention with a splice between the yoke unit and Polkerneinheit;
- Fig. 6:
- a fifth embodiment of the invention with a solder joint between the yoke unit and Polkerneinheit;
- Fig. 7:
- two illustrations of a sixth embodiment of the invention with a crimping point between yoke unit and Polkerneinheit;
- Fig. 8:
- two figures of a seventh embodiment of the invention with retaining lugs;
- Fig. 9:
- an eighth embodiment of the invention with compressed components;
- Fig. 10:
- two illustrations of a ninth embodiment of the invention with a splice between pole core and housing.
Die mehreren Ausführungsformen des erfindungsgemäßen Zentralmagneten, die in den
Anker 09 und Druckstift 11 bilden eine Ankereinheit. Die Ankereinheit kann in Abwandlungen auch einstückig ausgeführt sein. Das Joch 04 und die Jochplatte 06 bilden eine Jocheinheit, welche vorzugsweise vormontiert ist. Der Polkern 07 und das Gehäuse 08 bilden eine Polkerneinheit.
Der bauliche Unterschied zu der in
In der in
In
Bei der in
In der in
Gemäß der Darstellung in
Eine andere bevorzugte Ausführungsform zeigt
Bei der in
Eine weitere Möglichkeit der Montage ist die schwimmende Lagerung des Polkerns 07 bei der Montage, wie dies in
- 0101
- SpuleKitchen sink
- 0202
- Steckkontaktplug contact
- 0303
- Spulenkörperbobbins
- 0404
- Jochyoke
- 0505
- --
- 0606
- Jochplatteyoke plate
- 0707
- Polkernpole core
- 0808
- Gehäusecasing
- 0909
- Magnetankerarmature
- 1010
- --
- 1111
- Druckstiftpushpin
- 1212
- Flanschflange
- 1313
- Ankerlagerarmature bearing
- 1414
- PolkernlagerPolkernlager
- 1515
- --
- 1616
- Lagerstelle, ersteDepository, first
- 1717
- Lagerstelle, zweiteDepository, second
- 1818
- Zentralbohrungcentral bore
- 1919
- Zentrierhülsecentering
- 2020
- --
- 2121
- Fixierstellefixing location
- 2222
- Fixierstellefixing location
- 2323
- Klebestellesplice
- 2424
- Klebstellesplice
- 2525
- --
- 2626
- Klebestellesplice
- 2727
- RandfortsatzEdge extension
- 2828
- Lötstellesoldered point
- 2929
- Haltenaseretaining nose
- 3030
- --
- 3131
- Deckelcover
- 3232
- Fixierstellefixing location
- 3333
- Spielpassungclearance
- 3434
- Fixierstellefixing location
Claims (11)
- Central magnet for actuating a hydraulic directional control valve which is designed as a central valve, wherein the central valve is arranged radially within an inner rotor of a device for variable adjusting the control timing of an internal combustion engine, comprising:- a coil (01) for generating a magnetic field;- a yoke unit having a yoke (04) and a yoke plate (06, 31) and also a pole core unit halving a pole core (07) and a housing (08) for conducting a magnetic flux,- an armature unit which is arranged in the magnetic field of the coil (01) and which has an armature (09) and a pressure pin (11) as an actuator, wherein the armature unit is slidable in the direction of its longitudinal axis,- wherein the armature unit is mounted in a first bearing point (16) in the yoke unit and in a second bearing point (17) in the pole core unit;characterized in that one of the bearing points (16, 17) is, for the coaxial alignment of the two bearing points with respect to one another, mounted in a floating manner, and a centering sleeve (19) is arranged in the coil (01), which centering sleeve serves for the coaxial alignment of the bearing points (16, 17) during assembly.
- Actuating unit according to Claim 1, characterized in that the centering sleeve (19) serves for the radial positioning of the bearing points (16, 17).
- Actuating unit according to either one of Claims 1 and 2, characterized in that the pressure pin (11) is mounted at its two ends in in each case one of the bearing points (16, 17), and in that the armature (09) has a central bore (18) through which the pressure pin (11) is guided and axially fixed.
- Actuating unit according to one of Claims 1 to 3, characterized in that a fixing point is provided between the yoke plate (06) and the housing (08).
- Actuating unit according to Claim 4, characterized in that the fixing point is formed by an adhesive bond point (26), a solder point (28), a weld seam, a crimped connection or by folded-over retaining lugs (29).
- Actuating unit according to one of Claims 1 to 3, characterized in that a clearance fit (33) and a fixing point (34) are provided between the pole core (07) and the housing (08), the fixing point (34) being formed by an adhesive bond point in the clearance fit (33) or a solder point or a weld seam.
- Method for the assembly of a central magnet for actuating a hydraulic directional control valve which is designed as a central valve, wherein the central valve is arranged radially within an inner rotor of a device for variably adjusting the control timing of an internal combustion engine, comprising the following steps:a. assembly of a yoke unit, an armature unit, a pole core unit and a coil (01), with floating mounting of at least one of two bearing points (16, 17) in the yoke unit or in the pole core unit,b. coaxial alignment of the two bearing points (16, 17) with respect to one another, wherein the coaxial alignment of the bearing points takes place by means of the insertion of the yoke unit and of the pole core unit into a centering sleeve (19) arranged in the interior of the coil,c. fixing of the floatingly mounted bearing point.
- Method according to Claim 7, characterized in that the fixing takes place by pressing-in, adhesive bonding, soldering, welding, scrimping or clamping or a combination of said connecting techniques.
- Method according to Claim 9, characterized in that the fixing takes place by adhesively bonding the coil into the pole core unit and adhesively bonding the yoke unit to the coil.
- Method according to Claim 9, characterized in that the fixing takes place by adhesively bonding or soldering or welding the yoke unit to the pole core unit.
- Method according to Claim 9, characterized in that the fixing takes place by adhesively bonding or soldering or welding the pole core to the magnet housing.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008059012A DE102008059012A1 (en) | 2008-11-26 | 2008-11-26 | Electromagnetic actuator for a hydraulic directional control valve and method for its assembly |
PCT/EP2009/063646 WO2010060690A1 (en) | 2008-11-26 | 2009-10-19 | Electromagnetic actuating unit for a hydraulic directional control valve and method for the assembly thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2370675A1 EP2370675A1 (en) | 2011-10-05 |
EP2370675B1 true EP2370675B1 (en) | 2014-12-10 |
Family
ID=41426257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09736418.6A Active EP2370675B1 (en) | 2008-11-26 | 2009-10-19 | Electromagnetic actuating unit for a hydraulic directional control valve and method for the assembly thereof |
Country Status (4)
Country | Link |
---|---|
US (1) | US8350652B2 (en) |
EP (1) | EP2370675B1 (en) |
DE (1) | DE102008059012A1 (en) |
WO (1) | WO2010060690A1 (en) |
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DE102017121949A1 (en) * | 2017-09-21 | 2019-03-21 | Kendrion (Villingen) Gmbh | Actuating device, as well as motor vehicle with an adjusting device |
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DE102022133393A1 (en) | 2022-12-15 | 2024-06-20 | Schaeffler Technologies AG & Co. KG | Method for producing an electromagnet, electromagnet and solenoid valve with an electromagnet produced according to the method |
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Also Published As
Publication number | Publication date |
---|---|
US8350652B2 (en) | 2013-01-08 |
EP2370675A1 (en) | 2011-10-05 |
DE102008059012A1 (en) | 2010-05-27 |
WO2010060690A1 (en) | 2010-06-03 |
US20110220826A1 (en) | 2011-09-15 |
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