WO2012101148A1 - Électrovanne - Google Patents

Électrovanne Download PDF

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Publication number
WO2012101148A1
WO2012101148A1 PCT/EP2012/051093 EP2012051093W WO2012101148A1 WO 2012101148 A1 WO2012101148 A1 WO 2012101148A1 EP 2012051093 W EP2012051093 W EP 2012051093W WO 2012101148 A1 WO2012101148 A1 WO 2012101148A1
Authority
WO
WIPO (PCT)
Prior art keywords
solenoid valve
yoke
gap
valve according
magnetic
Prior art date
Application number
PCT/EP2012/051093
Other languages
German (de)
English (en)
Inventor
Dierk Hein
Original Assignee
Continental Teves Ag & Co. Ohg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Teves Ag & Co. Ohg filed Critical Continental Teves Ag & Co. Ohg
Priority to EP12701500.6A priority Critical patent/EP2668656A1/fr
Publication of WO2012101148A1 publication Critical patent/WO2012101148A1/fr

Links

Classifications

    • 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
    • H01F7/1623—Armatures having T-form
    • 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
    • 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
    • H01F7/13—Electromagnets; Actuators including electromagnets with armatures characterised by pulling-force characteristics

Definitions

  • the invention relates to a solenoid valve having a arranged in a magnetic yoke exciter coil and a magnet armature movably mounted to the magnetic armature, which is designed as an actuator of a valve and is moved when switching the excitation coil against a magnet armature and magnetic yoke at a distance holding spring to the yoke. Furthermore, the invention relates to an air spring device and a hydraulic damper for a motor vehicle with such a solenoid valve.
  • Solenoid valves i. Electromagnetically actuated switchable flow valves are often used for controlling flow processes in all kinds of fluids switching elements. In this case, when the current for an exciting coil in a magnetic core or magnetic yoke is induced by induction, a magnetic field and a magnetic flux is generated, which moves the armature and causes by this movement, the closing or opening of a flow valve.
  • Air suspension systems or level control systems serve as particularly comfortable suspension systems and ensure a pleasant ride Driving feeling in a suspension, which can be adjusted depending on the road conditions between a "soft" and “hard” suspension behavior.
  • An air spring system or level control system consists of the air spring and damper units comprehensive air spring struts for each wheel or at least for each axis, from the air supply system with a compressor, a memory, a regenerable dryer and has this to an electronic control usually, wherein be opened or closed via switchable pneumatic controls in the form of solenoid valves connections between work rooms or chambers, storage, compressors or working volumes.
  • air springs also called “air springs”, which are clamped between the chassis and body, have an air spring bellows, which in turn is fastened between a usually body-side air spring cover and a chassis-side rolling piston
  • air springs knows the expert in a variety of designs
  • the air spring bellows rolls under load and during spring movements to form a rolled fold on the outer contour of a concentric component, usually on the
  • Air spring piston / rolling piston Such air spring is often used in road or rail vehicles to achieve a comfortable suspension.
  • valves / solenoid valves used here usually consist of at least the valve piston or body and of the valve spring.
  • Simple throttle valves may consist of only narrowed cross sections, gaps, overflow edges, etc., in a known manner, of course, valves having a corresponding throttling action also comprising valve piston, valve spring and valve housing.
  • the US 3,157,831 shows an AC solenoid valve for actuating a valve piston with a laminated, ie composed of individual assembled metal yoke, which has three yoke legs connected to a bridge, and from an associated with the valve piston armature or actuator, the is formed complementary to the magnetic yoke and is arranged with a gap distance to the latter.
  • the magnetic yoke is M-shaped as a flat laminated body and the anchor formed in just this way T-shaped.
  • the exciter coil is arranged so that both magnet yoke and magnet armature dive into the coil or surround the coil.
  • Solenoid valves in air spring systems should namely on the one hand be as small and light and on the other hand can muster the largest possible forces when lifting.
  • pot magnets are often used in the prior art, which have several air gaps in the magnetic circuit, namely in addition to the axial air gap, through which the actual force is applied in the axial direction of the magnet by the magnetic field strength or the magnetic flux, also noteworthy radial air gaps between Anchor and yoke.
  • magnetic flux magnetic forces are generated, which act substantially perpendicular to the axis of the yoke and thus the solenoid valve and thus perpendicular to the direction of movement of the armature.
  • the object of the invention therefore, was to provide a small-sized pot magnet, inter alia, for use in air spring systems, which generates large lifting force, low magnetic power loss and an improvement of the magnetic efficiency allows and influencing the magnetic force characteristic, ie the relationship between magnetic force and stroke in cooperation with the return spring allowed.
  • the solenoid valve according to the invention comprises an exciter coil, which is toroidal and a magnetic yoke that surrounds the excitation coil cup-shaped, wherein the cup-shaped yoke has in its bottom portion in the cavity of the toroidal excitation coil projecting first body, the armature as a lid for the cup-shaped magnetic yoke is formed and the latter closes to form a first gap with a first gap spacing, wherein the magnet armature also in the
  • first and second gaps are arranged as axial gaps so that the magnetic flux is formed substantially parallel to the axis of the solenoid valve.
  • the solenoid valve can thus be made small and lightweight in all components, especially with regard to the number of turns and the
  • the solenoid valve is cylindrical and the cup-shaped magnetic yoke are designed as a rotationally symmetrical hollow cylinder, the first and the second body as a rotationally symmetric cylinder and the armature as a round and rotationally symmetrical lid.
  • z. B. oval or eccentric shapes of the solenoid valve, the round rotationally symmetrical shape of the components is particularly suitable because the corresponding receptacles in the facilities in which the solenoid valve according to the invention is to be used, are to be formed only as tolerated holes.
  • the magnet armature is designed in several parts, that is usually in two parts, and essentially has a cover plate and a second body connected to the cover plate and protruding into the cavity of the toroidal exciter coil. Cover plate and second body can be connected to one another in a material-locking or form-fitting manner. This results in a production method adapted to the individual application. For small magnets is quite an adhesive method applicable here
  • cup-shaped yoke is formed in several parts and essentially a bottom plate, one with the
  • Exciter coil surrounding pot housing identifies.
  • the individual parts can be connected to each other in a material-locking or form-fitting manner.
  • the magnet armature is designed as a valve body which cooperates with a valve seat for closing and opening the solenoid valve, so magnet armature and valve body are integrally formed. This achieves a partial reduction with regard to the overall valve structure.
  • a further advantageous embodiment consists in that the spring is arranged between the magnet armature formed as a lid and the cup-shaped yoke in the region of the first gap.
  • the magnetic flux is not or only imperceptibly influenced by the spring.
  • a stop buffer is arranged in the region of the first gap between the magnet armature designed as a lid and the cup-shaped yoke.
  • a further advantageous embodiment is that magnetic yoke and / or
  • Magnetic armature consist of turned parts. Turned parts are particularly tight
  • a further advantageous application of the solenoid valve according to the invention is that the solenoid valve is Gleichstromerregt and is arranged in an air spring device for a motor vehicle or in a hydraulic damper for a motor vehicle.
  • FIG. 2 shows a further embodiment of a solenoid valve according to the invention with a possibility for adapting the magnetic characteristic
  • FIG. 3 shows the force characteristics of a solenoid valve according to FIG. 2.
  • Magnetic yoke 2 arranged excitation coil 3 and a movable to the magnetic yoke. 2 mounted magnet armature 4, which is designed as an actuator of a valve and when switching the excitation coil 3 against a magnet armature 4 and magnetic yoke 2 spaced retaining retaining spring to the yoke 2 is moved towards.
  • the exciter coil 3 of the solenoid valve 1 is toroidal and the magnetic yoke 2 surrounds the exciter coil cup-shaped.
  • the cup-shaped magnetic yoke 2 has in its bottom region a projecting into the cavity of the toroidal exciter coil 3 first body 5.
  • the armature 4 is formed as a cover for the cup-shaped yoke 2 and closes the latter to form a first gap 6 with a first gap distance.
  • the magnet armature 4 similarly to the yoke, has a second body 7 projecting into the cavity of the toroidal exciter coil 3 and having a second gap spacing with respect to the first body 5 to form a second gap 8.
  • First and second gap 6 and 8 are arranged as axial gaps so that the magnetic flux 9, which is shown here for simplicity only on the right side of Fig. 1, formed substantially parallel to the axis 10 of the solenoid valve.
  • the same magnetic flux 9 is naturally toroidally formed around the exciting coil.
  • the solenoid valve is cylindrical here. Accordingly, the cup-shaped magnetic yoke 2 are designed as a rotationally symmetrical hollow cylinder, the first and the second body 5 and 7 as a rotationally symmetric cylinder and the magnet armature 4 as a round and rotationally symmetrical lid.
  • the armature 4 is formed in two parts and has a cover plate 11 and connected to the cover plate in the cavity of the toroidal excitation coil projecting second body 7. Both parts form fit over here not closer shown screwed together.
  • a restoring spring not shown here is in the dash-dotted framed area 12 between the magnet armature 4 designed as a lid and the cup-shaped
  • Magnetic yoke 2 arranged in the region of the first gap.
  • FIG. 2 A particularly advantageous embodiment is shown in FIG. 2, in which the projecting into the cavity of the toroidal excitation coil 3 first body 5 and protruding into the cavity of the toroidal exciter coil 3 second body 7 at their facing surfaces in the region of the second gap 8 with each other complementary projections and recesses are formed.
  • characteristic influencing can be achieved, i. a precise adaptation of the magnetic characteristic to the valve characteristic.
  • the first body 5 has a concentric and surrounding by a protruding outer edge recess 15, while the second body 7 has a concentric and complementary to the recess 15 cylindrical projection 16.
  • FIG. 3 in which, for the embodiment according to FIG. 2, the magnetic force is plotted over the stroke, i. the
  • the magnetic force generated by the gap 8 is represented by the curve 17 and the magnetic force generated by the gap 6 through the curve 18. Summarized and superimposed results then a force influencing the stroke, as shown by the curve 19.
  • the magnetic force is changed so that it reaches a high value at the beginning of the stroke, then drops only slightly over the stroke and only at the stroke end, a significant drop in the magnetic force is achieved.

Abstract

L'invention concerne une électrovanne (1) comprenant une bobine d'excitation (3) torique, placée dans une culasse magnétique (2) en forme de pot, et une armature magnétique (4) montée mobile par rapport à la culasse magnétique, l'armature magnétique agissant comme actionneur d'une soupape et se déplaçant en direction de la culasse magnétique à l'encontre d'un ressort lorsque la bobine d'excitation est mise sous tension, ladite culasse magnétique comportant, dans sa zone de fond, un premier corps (5) faisant saillie dans la cavité de la bobine d'excitation torique, l'armature magnétique faisant fonction de couvercle pour la culasse magnétique en forme de pot et fermant cette dernière en formant un premier écartement (6) avec une première distance d'écartement, l'armature magnétique comportant un second corps (7) faisant saillie dans la cavité de la bobine d'excitation torique, lequel possède une seconde distance d'écartement par rapport au premier corps en formant un second écartement (8), le premier et le second écartement se présentant sous la forme d'écartement axiaux, de sorte que le flux magnétique se forme de manière sensiblement parallèle à l'axe (10) de l'électrovanne.
PCT/EP2012/051093 2011-01-26 2012-01-25 Électrovanne WO2012101148A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12701500.6A EP2668656A1 (fr) 2011-01-26 2012-01-25 Électrovanne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011003169.3 2011-01-26
DE102011003169A DE102011003169A1 (de) 2011-01-26 2011-01-26 Magnetventil

Publications (1)

Publication Number Publication Date
WO2012101148A1 true WO2012101148A1 (fr) 2012-08-02

Family

ID=45554663

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/051093 WO2012101148A1 (fr) 2011-01-26 2012-01-25 Électrovanne

Country Status (3)

Country Link
EP (1) EP2668656A1 (fr)
DE (1) DE102011003169A1 (fr)
WO (1) WO2012101148A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013105406A1 (de) 2013-05-27 2014-11-27 Woco Industrietechnik Gmbh Elektromagnetische Vorrichtung, Jochelement und Verfahren zu deren Herstellung
KR101592271B1 (ko) 2014-06-30 2016-02-11 현대중공업 주식회사 전자접촉기

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US506282A (en) * 1893-10-10 Illitjs augustus timmis
US3157831A (en) 1959-03-30 1964-11-17 Indternat Telephone And Telegr Laminated core electromagnet
US4403765A (en) * 1979-11-23 1983-09-13 John F. Taplin Magnetic flux-shifting fluid valve
US4810985A (en) * 1983-04-25 1989-03-07 Colt Industries, Inc. Electromagnet for valves
EP0380693A1 (fr) * 1988-08-08 1990-08-08 Mitsubishi Mining & Cement Co., Ltd. Electro-aimant a noyau mobile
US5235303A (en) * 1990-07-14 1993-08-10 Xiao Xinkai Miniaturized universal electromagnet capable of operation in wide voltage range
US20090128271A1 (en) * 2006-04-18 2009-05-21 Shindengen Mechatronics Co., Ltd Solenoid
DE102008039421A1 (de) * 2008-08-13 2010-02-25 Prettl, Rolf Magnetventil und Verfahren zu dessen Herstellung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329760A1 (de) * 1993-09-03 1995-03-09 Bosch Gmbh Robert Elektromagnetisch betätigbares Proportionalventil
DE19738633B4 (de) * 1996-09-05 2006-06-08 Robert Bosch Gmbh Elektromagnetisches Schaltventil
DE102005035294A1 (de) * 2005-03-14 2006-09-21 Continental Teves Ag & Co. Ohg Elektromagnetventil
DE102006011078B4 (de) * 2006-03-08 2011-05-05 Thomas Magnete Gmbh Hubmagnet sowie Verfahren zu seiner Herstellung
DE102006059375A1 (de) * 2006-12-15 2008-06-19 Trw Automotive Gmbh Elektromagnetischer Aktuator sowie Verfahren zur Herstellung eines Bauteils für einen elektromagnetischen Aktuator
DE102008059712A1 (de) * 2008-11-29 2010-06-02 Robert Bosch Gmbh Ventilanordnung mit Ventil und einem Sensor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US506282A (en) * 1893-10-10 Illitjs augustus timmis
US3157831A (en) 1959-03-30 1964-11-17 Indternat Telephone And Telegr Laminated core electromagnet
US4403765A (en) * 1979-11-23 1983-09-13 John F. Taplin Magnetic flux-shifting fluid valve
US4810985A (en) * 1983-04-25 1989-03-07 Colt Industries, Inc. Electromagnet for valves
EP0380693A1 (fr) * 1988-08-08 1990-08-08 Mitsubishi Mining & Cement Co., Ltd. Electro-aimant a noyau mobile
US5235303A (en) * 1990-07-14 1993-08-10 Xiao Xinkai Miniaturized universal electromagnet capable of operation in wide voltage range
US20090128271A1 (en) * 2006-04-18 2009-05-21 Shindengen Mechatronics Co., Ltd Solenoid
DE102008039421A1 (de) * 2008-08-13 2010-02-25 Prettl, Rolf Magnetventil und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
EP2668656A1 (fr) 2013-12-04
DE102011003169A1 (de) 2012-07-26

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