EP0210650B1 - Elektromagnet - Google Patents
Elektromagnet Download PDFInfo
- Publication number
- EP0210650B1 EP0210650B1 EP86110477A EP86110477A EP0210650B1 EP 0210650 B1 EP0210650 B1 EP 0210650B1 EP 86110477 A EP86110477 A EP 86110477A EP 86110477 A EP86110477 A EP 86110477A EP 0210650 B1 EP0210650 B1 EP 0210650B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- groove
- bearing ring
- bearing
- tube
- 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
Links
Images
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
- H01F2007/085—Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material
Definitions
- the invention relates to an electromagnet, the armature of which is designed in the manner of a piston and is guided so as to be longitudinally displaceable within a tube which is surrounded by the winding of the magnet on at least part of its length, the piston for its displaceable mounting within the tube at least one bearing ring made of an elastic, non-magnetic material, which surrounds the piston substantially in a ring, cooperates with a groove machined into the outside of the piston, against movement relative to the groove by engaging at least one radially inward bulge of the bearing ring in a shape irregularity of the groove secured and has a lubricious material at least on its outer sliding surface interacting with the wall of the tube.
- An electromagnet of this type is already known from DE utility model 1 850887.
- the bearing ring is formed in one piece and slotted in the known electromagnet so that the bearing ring can be spread or bent open for the assembly process.
- the spreading or bending of the ring is unavoidable because there is no other way to position the bearing ring in the circumferential ring groove of the piston if the bearing ring has dimensions such that it is secured against axial displacement on the piston by engagement with the ring groove .
- the invention has for its object to provide an electromagnet in which the bearing ring can be brought into position on the piston serving as an anchor without a disturbing deformation.
- the groove starting from an end face of the piston, extends over at least part of the axial length of the piston, based on the longitudinal axis of the tube, and transversely to the central plane of the bearing ring that the bearing ring is self-contained so that the bulge is in the form of an undivided rib extending in the longitudinal direction of the groove, the width of which is coordinated with that of the groove, and that at least one to form the irregularity in shape interacting with the bulging of the bearing ring the two opposing longitudinal walls of the groove are rounded to a length adapted to the width of the bearing ring in the region of the transition to the adjacent lateral surface of the piston to form an edge recess in which the bearing ring is secured against axial displacement on the piston.
- the part of the bearing ring intended for engagement in the groove can be inserted into the groove from the end face of the piston without the ring part engaging in the groove needs to be lifted over non-recessed areas of the piston skirt, as is required when inserting a slotted ring into an annular groove of a piston.
- the part of the ring engaging in the groove in the form of an inwardly projecting bulge of the ring, which engages in an edge recess provided on the groove, which is formed by rounding off the edges of the opposing longitudinal walls of the groove, it is possible to form the bearing ring as a self-contained, not slotted ring.
- the closed ring needs to be widened only slightly by slightly pulling out the bulge so that it can be moved axially over the lateral surface of the piston until the edges of the bulge are aligned with the edge depressions of the groove and it is due to the elasticity of the Ring snaps into place and thus forms a safeguard against axial displacement of the ring.
- the deformation of the closed bearing ring during the assembly process of the same is so slight that there is no fear of damage to the base of the sliding layer if a lubricious coating is present on the outside of the bearing ring.
- the deformation only occurs at the bulge, which is slightly pulled out when the bearing ring is widened, there would be no risk of malfunction even if the coating was damaged at the deformed locations, because these damaged locations lie within the region of the edge depressions of the groove relative to the outer diameter of the bearing ring would lie somewhat further radially inward, ie would not interact with the inner wall of the tube as load-bearing sliding surface sections.
- the groove extends in a straight line in the longitudinal direction of the piston from one end face of the same to the other end face and has a plurality of edge depressions at a distance from one another for securing a plurality of bearing rings of the same design.
- the piston has two diametrically opposed, longitudinal grooves, and each bearing ring is provided with two diametrically opposed, inwardly projecting bulges.
- the invention is based on a the drawing illustrated embodiment explained in detail.
- the electromagnet has a movable armature in the form of a piston 1, which is connected to a concentrically arranged bumper 2.
- the piston 1 is axially displaceably mounted in a multi-part magnet housing, which is designated as a whole by 3.
- This has an end part 4, an intermediate tube 6 adjoining it axially and a pole tube 7 adjoining it axially.
- the end part 4, the intermediate tube 6 and the pole tube 7 form with their inner walls a cylindrical surface which surrounds the piston 1, which is axially displaceably guided therein.
- a magnetic winding 9 shown only broken off in FIG. 1 surrounds a large part of the end part 4, the intermediate tube 6 and the pole tube 7 over part of its length.
- the latter has two identically designed bearing rings 11 which are made of a non-magnetic material, for example a sheet metal strip made of V2A steel, a brass alloy, a copper alloy or the like.
- the latter has two grooves 13 of identical design, diametrically opposite one another, which are cut into the piston skirt and, in the exemplary embodiment, extend straight from one end face or end face 15 of the piston 1 in the direction of the piston longitudinal axis 14 extend to the other end surface 16.
- Each bearing ring 11 is a one-piece, self-contained ring with two bulges 18 arranged diametrically opposite one another, which are of identical design and form radially inwardly projecting ribs, the apex line of which extends in the longitudinal direction of the grooves 13.
- These have on their opposite, longitudinal side walls 21 and 22 edge depressions 23 which are formed by embossed rounding of the edge regions of the side walls 21 and 22, i.e. the areas in which the side walls 21 and 22 adjoin the outer surface of the piston 1.
- These edge depressions have an axial length adapted to the width of the bearing rings 11 and form a seat into which the bearing ring in question snaps with the associated inner surfaces de the bulge 18 in question.
- the circumferential length of the bearing rings 11 is dimensioned such that the bulges 18 engage the edge recesses 23 on the grooves 13 under pretension in order to axially secure the bearing rings 11.
- a certain widening of the ring 11 is therefore necessary, the bulges 18 being widened slightly, this widening of the bulges 18 reducing again as soon as the bearing ring 11 on the associated edge depressions 23 on the groove 13 is aligned.
- the bearing rings 11 are widened in the course of the assembly process, their slight deformation takes place only at the bulges 18, i.e.
- the bearing rings 11 can preferably have a layer made of a non-magnetic, lubricious material with the lowest possible permeability, e.g. a fluorine-containing polymer, for example 0.1 mm to 0.2 mm thick.
- the outer diameter of the piston 1 is chosen taking into account the strength of the bearing rings 11 located on it so that between the inner wall of the cylinder and the outside of the bearing rings 11 or, if applicable, their lubricious coating there is a play suitable for the sliding bearing of the piston 1.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Electromagnets (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3527423 | 1985-07-31 | ||
DE19853527423 DE3527423A1 (de) | 1985-07-31 | 1985-07-31 | Elektromagnet |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0210650A1 EP0210650A1 (de) | 1987-02-04 |
EP0210650B1 true EP0210650B1 (de) | 1990-05-16 |
Family
ID=6277277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86110477A Expired - Lifetime EP0210650B1 (de) | 1985-07-31 | 1986-07-29 | Elektromagnet |
Country Status (4)
Country | Link |
---|---|
US (1) | US4677410A (US07922777-20110412-C00004.png) |
EP (1) | EP0210650B1 (US07922777-20110412-C00004.png) |
JP (1) | JPS6242502A (US07922777-20110412-C00004.png) |
DE (2) | DE3527423A1 (US07922777-20110412-C00004.png) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4042235A1 (de) * | 1990-06-28 | 1992-01-02 | Urich Manfred | Fuellstandsmessvorrichtung |
DE4224754A1 (de) * | 1992-07-27 | 1994-02-03 | Budig Peter Klaus Prof Dr Sc T | Elektromagnetischer Aktuator |
US5986530A (en) * | 1998-01-13 | 1999-11-16 | Caterpillar Inc. | Solenoid and method for manufacturing |
DE19801529C2 (de) * | 1998-01-16 | 2001-02-08 | Hans Ulrich Bus | Elektromagnetischer Antrieb |
DE10218445A1 (de) * | 2002-04-25 | 2003-11-06 | Bosch Rexroth Ag | Anker für eine Magnetanordnung |
CN100419280C (zh) * | 2006-04-30 | 2008-09-17 | 钱澄 | 组合式磁环 |
DE102010042118A1 (de) * | 2010-10-07 | 2012-04-12 | Robert Bosch Gmbh | Gleitlager, Verfahren zum Herstellen eines Gleitlagers sowie Verwendung eines Gleitlagers |
DE102014108700A1 (de) * | 2014-06-20 | 2015-12-24 | Hilite Germany Gmbh | Zentralaktuator für einen Schwenkmotorversteller einer Nockenwelle |
US20160064133A1 (en) * | 2014-09-02 | 2016-03-03 | Husco Automotive Holdings Llc | Solenoid with magnetic tube and armature stabilizing element, and methods of making and using the same |
EP3557594B1 (en) * | 2018-04-19 | 2021-11-10 | HUSCO Automotive Holdings LLC | Solenoid having a dimpled armature tube |
JP2020053618A (ja) * | 2018-09-28 | 2020-04-02 | 日本電産トーソク株式会社 | ソレノイド |
CN113531191A (zh) * | 2021-07-14 | 2021-10-22 | 杭州群科荟科技有限公司 | 一种气隙磁导结构及其气体电磁阀 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD27458A (US07922777-20110412-C00004.png) * | ||||
US3010055A (en) * | 1956-07-30 | 1961-11-21 | American Nat Bank And Trust Co | Solenoid plunger with localized bearing |
DE1850887U (de) * | 1961-08-30 | 1962-05-03 | Siemens Ag | Kolbenfuehrung fuer tauchankermagnete. |
US3510814A (en) * | 1968-05-31 | 1970-05-05 | Automatic Switch Co | Solenoid operator having armature provided with guide rings |
GB1382429A (en) * | 1971-08-26 | 1975-01-29 | Brook J E | Indexing apparatus |
GB1499326A (en) * | 1974-04-18 | 1978-02-01 | Expert Ind Controls Ltd | Electromagnetic and armature core tubes for the same |
GB1578021A (en) * | 1976-05-01 | 1980-10-29 | Expert Ind Controls Ltd | Solenoid devices |
US4127835A (en) * | 1977-07-06 | 1978-11-28 | Dynex/Rivett Inc. | Electromechanical force motor |
DE3042752C2 (de) * | 1980-11-13 | 1985-10-03 | bso Steuerungstechnik GmbH, 6603 Sulzbach | Ankerlagerung in Elektrohubmagneten |
US4525695A (en) * | 1984-04-04 | 1985-06-25 | Parker Hannifin Corporation | Force motor with ball mounted armature |
-
1985
- 1985-07-31 DE DE19853527423 patent/DE3527423A1/de active Granted
-
1986
- 1986-07-28 US US06/889,620 patent/US4677410A/en not_active Expired - Fee Related
- 1986-07-29 DE DE8686110477T patent/DE3671322D1/de not_active Expired - Lifetime
- 1986-07-29 EP EP86110477A patent/EP0210650B1/de not_active Expired - Lifetime
- 1986-07-31 JP JP61181802A patent/JPS6242502A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE3527423A1 (de) | 1987-02-12 |
US4677410A (en) | 1987-06-30 |
DE3671322D1 (de) | 1990-06-21 |
JPS6242502A (ja) | 1987-02-24 |
EP0210650A1 (de) | 1987-02-04 |
DE3527423C2 (US07922777-20110412-C00004.png) | 1989-12-21 |
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