EP0986820A1 - Electroaimant, notamment pour la commande de soupapes - Google Patents
Electroaimant, notamment pour la commande de soupapesInfo
- Publication number
- EP0986820A1 EP0986820A1 EP98910690A EP98910690A EP0986820A1 EP 0986820 A1 EP0986820 A1 EP 0986820A1 EP 98910690 A EP98910690 A EP 98910690A EP 98910690 A EP98910690 A EP 98910690A EP 0986820 A1 EP0986820 A1 EP 0986820A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electromagnet
- magnet housing
- tube
- pole
- magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
-
- 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
- H01F7/16—Rectilinearly-movable armatures
- H01F2007/1661—Electromagnets or actuators with anti-stick disc
Definitions
- Electromagnet in particular for actuating valves
- the invention relates to an electromagnet, in particular for actuating valves, with a sleeve-shaped magnet housing which encloses a pole core which forms a closure of the magnet housing on the actuating side of the electromagnet, to which an actuating element movable by the magnet armature is accessible, which in one of the actuating side adjacent area is connected to the pole core via an at least partially positive connection.
- An electromagnet of this type is already known, see DE 195 04 185 A1.
- the invention has for its object to provide an electromagnet of the type under consideration is characterized by particularly good sealing and strength properties despite the simplified and inexpensive construction.
- connection between the magnet housing and the pole core has an annular groove machined into the circumference of the pole core, a sealing element which can be accommodated therein and an annular beading in the magnet housing to form contact surfaces which engage the inner walls of the annular groove in a form-fitting manner as well as a circumferential sealing surface resting on the sealing element.
- the sealing element can be an O-ring, a gap seal or a suitable coating on the inside of the annular groove and / or the pole housing in the area of the beading.
- the magnet housing is a one-piece extruded part which, on its bottom part opposite the actuation side, has an inward-running pole tube as the rear pole body which is open to the outside of the magnet housing.
- the invention is explained in detail below on the basis of an exemplary embodiment which is illustrated in the single drawing figure which shows an axial section through the exemplary embodiment connected to a directional control valve.
- an electromagnet is denoted by 1 and a directional valve to be actuated by it is denoted by 2.
- the electromagnet 1 has a magnet housing 3 designed as a one-piece extruded part, which has the shape of a circular-cylindrical cup, from the bottom part 5 of which a central pipe socket, which is formed during the extrusion process, extends inward and forms a rear pole tube 7 within the magnet housing 3 .
- a coil body 9 surrounding the pole tube 7 with a magnet winding 11, the electrical connecting lugs 13 of which are guided to the outside via bottom openings 15, which are punched out in the bottom part 5 of the magnet housing 3.
- a thin tube 1 7 made of non-magnetic metal, which forms a guide for the armature piston 1 9 in its rear part. In its front, enlarged part, the tube 1 7 extends along the inside of the coil former 9 up to its front end opposite the connecting lugs 13.
- the coil body 9 inserted in the magnet housing 3 with magnetic winding 1 1 and connecting lugs 1 3 is overmolded with insulating plastic in the case of a built-in tube 1 7 in such a way that plastic material surrounds the outside of the magnetic winding 1 1 and fills the space between the latter and the inside of the magnet housing 3 and that on the bottom part 5 a molded, extending through the bottom openings 15 connecting part is formed as an integral molded part, which closes the bottom openings 1 5 and the outer opening of the tube 1 7.
- This connector 21 also forms an integral Plug part 23, on which the connection lugs 1 3 of the magnetic winding 1 1 can be contacted.
- the connecting part 21 is shaped such that a circumferential annular groove 25 is formed for receiving an O-ring 27.
- a pole core 31 forms the actuation end of the electromagnet 1.
- the pole core 31 has an enlarged flange part 33, on the inner shoulder of which the coil former 9 is supported.
- a circumferential annular groove 35 is incorporated into the outer peripheral surface of the flange part 33, in which a sealing element in the form of an O-ring 37 is received.
- An annular indentation 39 in the magnet housing 3 aligned with the annular groove 35 forms a form-fitting connection between the magnet housing 3 and the pole core 31 by contact with the inner walls of the annular groove 35. Since the indentation 39 does not form a breakthrough through the wall of the magnet housing 3, the contact with the O-ring located in the annular groove 35 also results in a circumferential sealing surface, so that the connection forms a pressure-tight closure of the magnet housing 3.
- a sealing arrangement of a different type for example a gap seal or a coating with a sealing compound, could also be provided as the sealing element.
- a part of the pole core 31 which extends along the inside of the coil body 9 in the direction of the pole tube 7 has a further annular groove with an O-ring 41 for sealing against the tube 17 which lies against the coil body 9.
- This part of the pole body 31 projecting against the pole tube 7 ends in a conical surface 43, which is separated from the facing end of the pole tube 7 via an air gap 45.
- the magnetic piston 1 9 is traversed through an inner axial bore 47 for pressure compensation.
- the actuating pin 29 rests with its end face on the valve piston 51 of the directional valve 2 to be actuated.
- the valve piston 51 is biased by a compression spring 53 to bear against the actuating pin 29.
- the directional control valve 2 has an enlarged collar 55 on the side of its valve housing 54 intended for the attachment of the electromagnet 1.
- the encapsulation of the coil body 9 with the built-in tube 1 7 results in a high overall strength for the unit comprising the magnet housing 3, the coil body 9 and the tube 1 7.
- the thin tube 1 7 gets its guidance.
- the tube 1 7 seals the magnet on the oil side to the outside, in turn gives the armature piston 1 9 its guidance and effects the magnetic separation.
- the sealed installation option of the electromagnet 1 via the annular groove 25 on the connecting part 21 with the O-ring 27 inserted results in the possibility of the oil-tight installation of the electromagnet 1 in an oil space within a bulkhead wall or cover 61. Since the connecting part 21 protruding from the cover 61 is a plastic part and the remaining part of the electromagnet 1 inside the cover 61 is protected in the oil chamber from external corrosive influences, external corrosion protection of the electromagnet 1 can be dispensed with. Characterized in that the tube 1 7 outwards over the plastic material of the extrusion coating and over the extrusion-coated Coil body 9 is supported on the inside of the magnet housing 3, the electromagnet 1 can meet increased internal pressure loads.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19717445 | 1997-04-25 | ||
DE19717445A DE19717445C2 (de) | 1997-04-25 | 1997-04-25 | Elektromagnet, insbesondere zum Betätigen von Ventilen |
PCT/EP1998/000893 WO1998049696A1 (fr) | 1997-04-25 | 1998-02-17 | Electroaimant, notamment pour la commande de soupapes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0986820A1 true EP0986820A1 (fr) | 2000-03-22 |
EP0986820B1 EP0986820B1 (fr) | 2005-02-02 |
Family
ID=7827696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98910690A Expired - Lifetime EP0986820B1 (fr) | 1997-04-25 | 1998-02-17 | Electroaimant, notamment pour la commande de soupapes |
Country Status (6)
Country | Link |
---|---|
US (1) | US6344783B1 (fr) |
EP (1) | EP0986820B1 (fr) |
JP (1) | JP2002510433A (fr) |
DE (2) | DE19717445C2 (fr) |
ES (1) | ES2236892T3 (fr) |
WO (1) | WO1998049696A1 (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19934846A1 (de) | 1999-07-24 | 2001-01-25 | Hydraulik Ring Gmbh | Elektromagnet und hydraulisches Ventil mit einem Elektromagneten |
JP4474626B2 (ja) * | 1999-10-19 | 2010-06-09 | 株式会社デンソー | 電磁弁 |
DE19956160A1 (de) * | 1999-11-23 | 2001-05-31 | Schaeffler Waelzlager Ohg | Magnetventil, insbesondere hydraulisches Proportionalventil |
US6759934B2 (en) * | 2000-09-11 | 2004-07-06 | Delphi Technologies, Inc. | Proportionally-controllable solenoid actuator |
WO2002061314A1 (fr) * | 2001-01-31 | 2002-08-08 | Nok Corporation | Vanne electromagnetique |
ES2243838T3 (es) * | 2002-07-22 | 2005-12-01 | Tyco Electronics Belgium Ec N.V. | Dispositivo de control de valvular para controlar una valvula para un fluido a presion. |
JP3938563B2 (ja) | 2002-11-08 | 2007-06-27 | 三菱電機株式会社 | 電磁弁 |
DE10308074A1 (de) * | 2003-02-26 | 2004-09-09 | Hydraulik-Ring Gmbh | Ventil, vorzugsweise Proportionalmagnetventil |
DE10337206B4 (de) * | 2003-08-13 | 2006-04-13 | Zf Lenksysteme Gmbh | Proportional-Hydraulik-Magnetventil |
JP4222205B2 (ja) * | 2003-12-25 | 2009-02-12 | 株式会社デンソー | 電磁スプール弁 |
DE102004014376A1 (de) * | 2004-03-17 | 2005-10-06 | Hydac Electronic Gmbh | Schaltvorrichtung |
DE102004025969A1 (de) * | 2004-05-18 | 2005-12-15 | Hydraulik-Ring Gmbh | Magnetventil |
DE102005007141B4 (de) * | 2005-02-17 | 2006-11-02 | Hydac Electronic Gmbh | Ventil |
DE102005041395B4 (de) * | 2005-09-01 | 2014-11-27 | Schaeffler Technologies Gmbh & Co. Kg | Hydraulisches Wegeventil |
DE102006054942B3 (de) * | 2006-11-22 | 2007-12-06 | Thomas Magnete Gmbh | Elektromagnet zur Betätigung von Ventilen |
DE102006060270B4 (de) | 2006-12-20 | 2012-12-06 | Thomas Magnete Gmbh | Elektromagnet |
DE102008032727A1 (de) * | 2008-07-11 | 2010-01-14 | Robert Bosch Gmbh | Hubmagnetanordnung und Ventilanordnung |
DE102008036007A1 (de) * | 2008-08-01 | 2010-02-04 | Robert Bosch Gmbh | Verfahren zur Herstellung eines Polrohres und Polrohr |
JP6221092B2 (ja) * | 2012-12-25 | 2017-11-01 | 新電元メカトロニクス株式会社 | ソレノイド |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3303445A (en) * | 1965-03-18 | 1967-02-07 | Albert F Dormeyer | Solenoid construction |
FR2385199A1 (fr) * | 1977-03-24 | 1978-10-20 | Mecalectro | Electro-aimant, notamment pour la commande de distributeurs hydrauliques |
GB8609464D0 (en) * | 1986-04-17 | 1986-05-21 | Ped Ltd | Solenoid actuator |
DE4201449C2 (de) * | 1992-01-21 | 1995-02-02 | Danfoss As | Magnetventil-Oberteil |
JP3465407B2 (ja) * | 1994-07-29 | 2003-11-10 | アイシン精機株式会社 | 開閉電磁弁 |
DE9415014U1 (de) * | 1994-09-15 | 1994-11-17 | Siemens AG, 80333 München | Miniaturisierte Magnetspule mit Jochring und dazugehörigem Spulenkörper |
DE19537656B4 (de) * | 1994-11-03 | 2005-02-17 | Robert Bosch Gmbh | Verfahren zur Herstellung eines Elektromagnetventils |
DE4439422C2 (de) * | 1994-11-04 | 1996-09-19 | Bso Steuerungstechnik Gmbh | Druckdichte elektromagnetische Schaltvorrichtung |
DE19504185B4 (de) * | 1995-02-09 | 2004-07-22 | Hydraulik-Ring Gmbh | Elektromagnetisch betätigbares Ventil |
DE19519890A1 (de) * | 1995-05-31 | 1996-07-11 | Bosch Gmbh Robert | Elektromagnetisch betätigbares Magnetventil |
-
1997
- 1997-04-25 DE DE19717445A patent/DE19717445C2/de not_active Expired - Fee Related
-
1998
- 1998-02-17 EP EP98910690A patent/EP0986820B1/fr not_active Expired - Lifetime
- 1998-02-17 DE DE59812542T patent/DE59812542D1/de not_active Expired - Lifetime
- 1998-02-17 US US09/402,612 patent/US6344783B1/en not_active Expired - Lifetime
- 1998-02-17 WO PCT/EP1998/000893 patent/WO1998049696A1/fr active IP Right Grant
- 1998-02-17 JP JP54651698A patent/JP2002510433A/ja active Pending
- 1998-02-17 ES ES98910690T patent/ES2236892T3/es not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9849696A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1998049696A1 (fr) | 1998-11-05 |
DE19717445A1 (de) | 1998-10-29 |
US6344783B1 (en) | 2002-02-05 |
DE19717445C2 (de) | 1999-11-18 |
JP2002510433A (ja) | 2002-04-02 |
ES2236892T3 (es) | 2005-07-16 |
EP0986820B1 (fr) | 2005-02-02 |
DE59812542D1 (de) | 2005-03-10 |
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