EP2157587A2 - Tube polaire et aimant d'actionnement en étant équipé - Google Patents

Tube polaire et aimant d'actionnement en étant équipé Download PDF

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Publication number
EP2157587A2
EP2157587A2 EP20090009850 EP09009850A EP2157587A2 EP 2157587 A2 EP2157587 A2 EP 2157587A2 EP 20090009850 EP20090009850 EP 20090009850 EP 09009850 A EP09009850 A EP 09009850A EP 2157587 A2 EP2157587 A2 EP 2157587A2
Authority
EP
European Patent Office
Prior art keywords
pole tube
closure insert
sealing lip
tube according
sealing
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.)
Withdrawn
Application number
EP20090009850
Other languages
German (de)
English (en)
Inventor
Brian Kane
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
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2157587A2 publication Critical patent/EP2157587A2/fr
Withdrawn legal-status Critical Current

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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
    • H01F7/128—Encapsulating, encasing or sealing
    • 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

Definitions

  • the invention relates to a pole tube according to the preamble of claim 1 and a solenoid operated therewith.
  • pole tubes are for example from the DE 199 52 800 or the DE 10 2006 021 927 A1 known. Accordingly, a pole tube has an armature space surrounding sleeve in which a magnet armature is received axially displaceable. At one end portion of the armature space, a pole piece is arranged, which is usually penetrated by a plunger, so that an axial displacement of the armature is transmitted via the plunger to the valve to be actuated.
  • the other end portion of the armature space is pressure-tightly sealed by means of a closure insert acting as a stroke limiter.
  • a closure insert acting as a stroke limiter.
  • an emergency operating plunger is provided, via which the magnet armature can be actuated by a fault, for example a power failure by hand.
  • the armature space is filled with pressure medium, so that appropriate precautions must be taken between the sleeve and the closure insert to complete the armature space pressure-tight.
  • O-ring seals are provided between the inner circumferential wall of the sleeve and the outer peripheral wall of the lock insert and between the outer periphery of the emergency operating slide and an inner circumferential wall of a slide guide in the lock insert.
  • the invention has for its object to provide a pole tube and an actuating magnet executed therewith, in which the sealing of an armature space is made possible with comparatively simple means.
  • the pole tube is closed at one end section by means of a closure insert, which acts as a stroke limiter.
  • a closure insert acts as a stroke limiter.
  • elastic sealing lips are formed, which deform elastically when inserting the closure insert and create a sealing against the inner peripheral wall of an armature space of the pole tube.
  • the closure insert is made of plastic, preferably of fiber-reinforced plastic, for example by injection molding.
  • the structure of the closure insert is particularly simple when the sealing lip is formed circumferentially in the region of an end-side peripheral edge of the closure insert.
  • the sealing lip can be limited on the one hand by a Stirn vomringnut. This preferably tapers away from the said handling edge.
  • the contour of the sealing lip can be further optimized if this is circumferentially downgraded and gradually expanded radially to the peripheral edge.
  • This radial extension is preferably made conical.
  • the sealing lip is at a distance to the grading in abutment against a Polrohrinnen Strukturswandung.
  • a constriction is provided approximately centrally on the outer circumference of the closure insert, in which a Polrohrendabites engages by forming to fix the closure insert material fit.
  • the actuating tappet passing through the closure insert is likewise guided in a sealing manner and preferably rests against a seating surface of the closure insert with a sealing cone.
  • a sealing ring may be provided on a guided in the closure insert guide pin of the emergency actuating ram.
  • the sealing lip can also be designed as a circumferential radial collar, which cooperates sealingly with the above-described Polrohrendabrough formed by forming. It is preferable to provide both a radial collar and a frontal sealing lip in the above-described configuration on the closure insert.
  • the radial collar is preferably beyond the sealing lip in the radial direction.
  • the sealing lips of a softer material than the base body, so that these areas are optimized in terms of the sealing function.
  • pole tube 1 has a basic structure, as for example, from the aforementioned DE 10 2006 021 924 is known.
  • a pole tube 1 has a pole sleeve 2 made of magnetizable steel, which is connected via a separator ring 4 made of non-magnetizable material with a pole piece 6 by welding.
  • a displaceable in the axial direction ram 8 is guided over the example, a valve spool of a valve to be actuated can be adjusted.
  • This Polrohrmantel consisting of the sleeve 2, the separator ring 4 and the pole piece 6 defines an armature space 10 in which a magnet armature 12 is slidably guided.
  • FIG. 1 illustrated pole tube 1 is encompassed in an actuating magnet of a solenoid, not shown, in the energization of the armature in the illustration according to FIG. 1 is adjusted to the left.
  • an antistick disc 15 is accommodated thereon.
  • the in FIG. 1 right end portion of the armature space 10 is closed by a closure insert 14 which is connected by rollers or other forming process with the sleeve 2, wherein a bead 16 of the sleeve 2 is rolled into a constriction 18 of the closure insert 14.
  • the illustrated pole tube 1 with the attached magnetic coil is screwed via a fastening thread 20 into the housing of the valve to be actuated.
  • a circumferential sealing lip 21 is formed which sealingly abuts the inner peripheral wall of the pole tube 1 delimiting the armature space 10, so that the armature space 10 filled with pressure medium seals towards the outside is.
  • the armature stroke in the direction of the closure insert 14 is limited by an emergency operating plunger 24, which is displaceable in the closure insert 14 is guided and rests in the illustrated basic position with a cone 26 on a seat 28 of the closure insert 14.
  • FIG. 2 shows the relative position of the sleeve 2 and the closure insert 14 before rolling.
  • the circumferential sealing lip 21 is formed by a Stirn medicinalringnut 30 which tapers from the left end face 32 obliquely inwardly with the radially outer flanks, wherein the peripheral apex 34 of the Stirn medicinalringnut 30 is rounded.
  • an inner edge 36 of the sealing lip 21 is made obliquely, so that the sealing lip 21 for in FIG. 2 left circumferential edge 38 of the closure insert 14 tapers.
  • the profile of the sealing lip outer circumferential surface is in detail Y in FIG. 3 shown.
  • the peripheral edge 38 which is slightly rounded in the illustrated exemplary embodiment and along which the sealing lip 21 bears against the inner peripheral surface 22 of the pole tube.
  • the outer periphery of the sealing lip 21 is conically tapered, wherein the cone angle a is less than 10 °, preferably less than 5 °.
  • the sealing lip 21 terminates at a radial shoulder 40, via which the closure insert 14 springs back on its outer circumference 42, which corresponds to the outer diameter of the armature space 10 and is thus slidably guided along this.
  • the diameter D of the peripheral edge 38 is slightly larger than the diameter of the armature space 10 carried out so that in the installed state, the sealing lip 21 is biased radially inwardly, said bias corresponds to the dimension V, the in FIG. 3 is drawn.
  • the abutment of the peripheral edge 38 of the sealing lip 21 against the inner circumferential surface 22 allows a high sealing surface pressure.
  • constriction 18 can be seen approximately centrally on the outer circumference of the closure insert 14 into which, after rolling, the flanged edge 16 (in FIG FIG. 2 undeformed) immersed, so that the closure insert 14 is fixed in position.
  • an external thread 44 is formed.
  • the closure insert 14 has a guide bore in which the emergency actuating push rod 24 is displaceably guided.
  • This has a central guide collar 48 which is slidably guided in the guide bore 46.
  • a receiving groove 50 is formed for an O-ring, via which the armature space 10 is sealed in the guide for the Notbetreli Techsst Schemeel 24.
  • the Notbetrelirsst Schemeel 24 slightly downgraded and then goes into the cone 26 which rests in the home position on the formed in the armature-side mouth region of the guide bore 46 seat 28.
  • a stop collar 52 is provided, on the end face 54 to the Hubbegrenzung the adjacent end face of the armature 12 runs.
  • the emergency operating tappet 24 can be moved from the outside to the left (see FIG FIG. 2 ) to adjust the armature 12 and thus also the plunger 8 and bring the valve by hand in a corresponding position.
  • the closure insert 14 is made of plastic, wherein the choice of material is optimized in terms of optimum sealing.
  • the sealing lip 21 could for example consist of a material component with a higher elasticity.
  • the injection molding offers, in which case in the two-component injection molding a sealing lip made of a relatively soft material can be made in one piece on the closure insert 14, which otherwise consists of a harder material.
  • FIGS. 4, 5 and 6 a further embodiment of the above-described closure insert 14 is explained.
  • This has in principle the same basic structure as the previously described closure insert 14, ie the peripheral surface of the sealing lip 21 tapers conically from the peripheral edge 38 in the direction of the constriction 18.
  • the elasticity of the sealing lip 21 is inter alia by the geometry of the Stirn medicinalringnut 30 (see FIG. 6 ) certainly.
  • In the transition region between the sealing lip 21 and the constriction 18 is a cylindrical portion with the outer peripheral surface 42, the flat against the inner peripheral surface of the sleeve 2, while the sealing lip 21 is biased due to their slightly larger diameter with bias sealingly against the inner peripheral surface 22.
  • the constriction 18 is designed with a slightly larger axial length than in the embodiment described above.
  • a radial collar 56 is provided, which has two radially extending annular end faces 58, 60 and the axial length (width) is substantially less than the axial length of the constriction 18 is executed.
  • the outer diameter R of the radial collar is designed substantially larger than the outer diameter of the outer peripheral surface 42 of the insert 14, so that this radial collar 56 is in the radial direction beyond the other wall regions of the closure insert 14 addition.
  • FIG. 5 the profile in the area of this radial collar 56 is shown enlarged. Accordingly, the radial collar 56 divides the constriction 18 into a flanging groove 62 and a rear groove 64, to which in the illustration according to FIG FIG. 4 to the left of the externally threaded 44 formed outside the sleeve 2 arranged end portion of the closure insert 14 connects. The transition takes place via an inclined surface 66, the geometry of which can in principle be arbitrarily designed.
  • closure insert 14 can also be made of other materials or by other methods - it is essential that the sealing lip 21 is designed by suitable geometry and / or choice of material so that it can fulfill their sealing function.
  • a pole tube for an electromagnet and a running with such a pole tube actuating magnet, wherein on a closure insert of the pole tube integrally sealing lips are provided for sealing an armature space.
EP20090009850 2008-08-11 2009-07-30 Tube polaire et aimant d'actionnement en étant équipé Withdrawn EP2157587A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008037293 2008-08-11
DE102008056231A DE102008056231A1 (de) 2008-08-11 2008-11-06 Polrohr und damit ausgeführter Betätigungsmagnet

Publications (1)

Publication Number Publication Date
EP2157587A2 true EP2157587A2 (fr) 2010-02-24

Family

ID=41528257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090009850 Withdrawn EP2157587A2 (fr) 2008-08-11 2009-07-30 Tube polaire et aimant d'actionnement en étant équipé

Country Status (2)

Country Link
EP (1) EP2157587A2 (fr)
DE (1) DE102008056231A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021207631A1 (de) 2021-07-16 2023-01-19 Robert Bosch Gesellschaft mit beschränkter Haftung Magnetkörper für ein Magnetventil, Magnetventil sowie Verfahren zum Herstellen eines Magnetkörpers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018218799B4 (de) * 2018-11-05 2020-06-18 Festo Se & Co. Kg Aktoreinrichtung, Ventileinrichtung und Verfahren zur Erfassung einer Stellung eines Stellglieds

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19952800A1 (de) 1999-02-22 2000-08-24 Mannesmann Rexroth Ag Magnetpol für einen Betätigungsmagneten
DE102006021927A1 (de) 2006-05-11 2007-11-15 Robert Bosch Gmbh Elektromagnet
DE102006021924A1 (de) 2006-05-11 2007-11-22 Grundig Multimedia B.V. Anordnung zur Programmwahl bei einem Gerät der Unterhaltungselektronik

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19952800A1 (de) 1999-02-22 2000-08-24 Mannesmann Rexroth Ag Magnetpol für einen Betätigungsmagneten
DE102006021927A1 (de) 2006-05-11 2007-11-15 Robert Bosch Gmbh Elektromagnet
DE102006021924A1 (de) 2006-05-11 2007-11-22 Grundig Multimedia B.V. Anordnung zur Programmwahl bei einem Gerät der Unterhaltungselektronik

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021207631A1 (de) 2021-07-16 2023-01-19 Robert Bosch Gesellschaft mit beschränkter Haftung Magnetkörper für ein Magnetventil, Magnetventil sowie Verfahren zum Herstellen eines Magnetkörpers

Also Published As

Publication number Publication date
DE102008056231A1 (de) 2010-02-18

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