EP2118916A1 - Bobine magnétique et procédé pour sa fabrication - Google Patents

Bobine magnétique et procédé pour sa fabrication

Info

Publication number
EP2118916A1
EP2118916A1 EP07857873A EP07857873A EP2118916A1 EP 2118916 A1 EP2118916 A1 EP 2118916A1 EP 07857873 A EP07857873 A EP 07857873A EP 07857873 A EP07857873 A EP 07857873A EP 2118916 A1 EP2118916 A1 EP 2118916A1
Authority
EP
European Patent Office
Prior art keywords
coil
magnetic
transition region
cover element
shell
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Withdrawn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
EP07857873A
Other languages
German (de)
English (en)
Inventor
Florian Rispler
Alexander Bareiss
Christoph Kasper
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 EP2118916A1 publication Critical patent/EP2118916A1/fr
Withdrawn legal-status Critical Current

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
    • H01F7/081—Magnetic constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0233—Manufacturing of magnetic circuits made from sheets
    • 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
    • H01F2007/083—External yoke surrounding the coil bobbin, e.g. made of bent magnetic sheet

Definitions

  • the present invention relates to a magnetic coil and a method for its production.
  • Magnetic coils are used for example in solenoid valves in motor vehicles, for example in hydraulic vehicle brake systems.
  • the known magnetic coils have basically a structure such that a winding support is wound with a winding, wherein the winding support made of a plastic o.a. is manufactured and a cylindrical coil casing surrounds the winding support together with winding.
  • the coil shell is cup-shaped with a central bottom opening and a bottom opening opposite region is closed by a separate cover.
  • the cover is connected to the coil shell, for example by welding.
  • Such a magnetic coil is known, for example, from EP 1 307 369 A1.
  • the known magnetic coils have the disadvantage that their production is relatively complicated and the magnetic coil is made of a plurality of individual components. It would thus be desirable if the solenoid could be improved to achieve a cost reduction and, in particular, a reduction in assembly effort.
  • the solenoid coil according to the invention with the features of claim 1 has the advantage that it can be easily and inexpensively manufactured. An assembly effort can be reduced to a minimum and the assembly can be done in a very short time.
  • an entire iron circle of the magnetic coil is made of a component which is produced from a stamped sheet-metal component which is subsequently bent in an advantageous manner.
  • the housing comprises a coil jacket, a cover element and a bottom element and is designed as a one-piece component. The housing has in the magnetic coil the task to provide the magnetic return.
  • the housing is made of a one-piece sheet metal material.
  • the inventive method for producing a magnetic coil in particular for
  • a flat blank made of a sheet material for the housing of the solenoid is provided.
  • the blank may be cut, for example, by punching or by cutting, e.g. be provided by means of a laser.
  • the blank of flat sheet material has a cover element, a bottom element and a coil shell, wherein in the cover element a first circular recess and in the bottom element a second circular recess is formed.
  • a deep drawing step of the first and second circular recesses is performed to form first and second magnetic transition regions on the housing.
  • a deep drawing direction of the first magnetic transition region is opposite to a deep drawing direction of the second
  • the bottom element is bent over by an angle of 90 °, so that the second magnetic transition region is directed to an inner side of the still to be finished magnetic coil.
  • the coil shell is rolled from the flat shape into a cylindrical shape.
  • a winding carrier on which a winding is applied, inserted into the cylindrical shape of the rolled coil shell. If necessary, the winding support can be fixed to the almost finished housing.
  • the cover element is then bent by an angle of 90 °, wherein the first magnetic transition region on the cover element directed to the outside of the magnetic coil is.
  • the solenoid is completed.
  • the inventive method thus comes only with the use of forming steps from a one-piece flat blank to the housing of the magnetic coil. As a result, the method according to the invention can be carried out very simply and inexpensively.
  • the method according to the invention may also comprise the following steps.
  • the first three steps i.e., providing a flat sheet of sheet material, deep drawing the first and second circular recesses, and bending the bottom member 90 °, are performed as in the method described in the previous paragraph. Subsequently, however, in a next
  • Step a bending of the bottom element at an angle of 90 °, wherein the first magnetic transition region is directed to the outside of the magnetic coil.
  • This alternative method is particularly simple and inexpensive to carry out.
  • the method comprises the following steps. First, as in the other methods, a flat blank made of a sheet material or the like having a coil sheath, a lid member and a bottom member, and a first and a second circular recess are provided in the lid member and the bottom member, respectively. Subsequently, the deep drawing step of the first and second circular cavities in the lid member and the bottom member is in opposite directions to provide the magnetic transition regions. In the third step, the coil shell is then rolled and then the winding carrier is inserted with the winding applied thereto. Subsequently, as the last step, the bending of the cover element and the bottom element takes place. The bending of the lid member and the bottom member can be done in any order sequentially or simultaneously. - A -
  • the inventive method comprises a step of joining together from a first and second abutting edge of the coil jacket.
  • Joining can be done, for example, by welding or gluing or latching, i.e., mating the two abutting edges. Also, connecting the two
  • Abutting edges are realized by the fact that in the coil shell, a slot is provided, in which one of the two abutting edges is inserted. If necessary, a fixing of the inserted abutting edge, e.g. by means of welds or similar.
  • the cover element and / or the bottom element is additionally connected to the coil jacket. This can be done in the same way as a joining of the two abutting edges of the coil shell, that is, by means of gluing, welding, positive locking or nesting.
  • the present invention relates to a one-piece blank for a housing of an iron circuit of a magnetic coil.
  • the blank comprises a substantially rectangular coil sheath, a cover element arranged on the coil sheath via a first connecting web, and a cover element via a second connecting web
  • Coil jacket arranged floor element The cover element and the bottom element are arranged on opposite side regions of the coil jacket.
  • the one-piece blank is preferably formed symmetrically to a first and / or second central axis of the coil jacket.
  • the one-piece blank is preferably made of a sheet metal material.
  • the lid member and the bottom member are respectively disposed at the center of the opposite side portions of the magnetic coil.
  • a symmetrical blank in both central axes of the coil jacket is possible.
  • solenoid coil according to the invention is preferably used in conjunction with solenoid valves, in particular solenoid valves in motor vehicles, for example in injectors or solenoid valves for a brake system.
  • Figure 1 is a schematic plan view of a blank for a housing of a
  • FIG. 2 shows a schematic side view of the blank shown in FIG. 1,
  • FIG. 3 shows a side view of the blank after a step of deep-drawing
  • FIG. 4 shows a side view of the blank of FIG. 1 after a first step of the forming
  • Figure 5 is a side view of the blank after a step of rolling the
  • FIG. 6 shows a view from the left of the state of the blank shown in FIG. 5,
  • FIG. 7 shows a schematic sectional view of the blank with inserted coil carrier shown in FIG. 5,
  • FIG. 8 shows a schematic sectional view of a finished magnet coil according to the first exemplary embodiment
  • Figures 12 and 13 are partially sectional views of a magnetic coil to illustrate a method for producing the magnetic coil according to a third
  • the blank 2 comprises a substantially rectangular coil shell 3, on whose four outer corners four rectangular recesses 3a, 3b, 3c and 3d are formed.
  • the depth of the recesses 3 a, 3 b, 3 c, 3 d in the longitudinal direction X-X and in the transverse direction Y-Y of the blank 2 corresponds to the thickness D of the sheet material.
  • the blank 2 further comprises a cover element 4 and a bottom element 5, which are formed integrally with the coil shell 3.
  • a first connecting web 6 is provided between the coil casing 3 and the cover element 4, and a second connecting web 7 is provided between the coil casing 3 and the bottom element 5 (see FIG.
  • a circular recess 4a is also centrally formed and formed at the end of the cover 3 of the cover element 4 a fixing flange 4b.
  • the bottom element 5 also has a central, circular recess 5a and a fixing flange 5b.
  • the blank 2 is both symmetrical to the longitudinal axis X-X and to the transverse axis Y-Y.
  • Cover element 4 and the bottom element 5 are not arranged, are a first abutment edge 3e and a second abutting edge 3 f.
  • the inventive method for producing the magnetic coil 1 according to the first embodiment proceeds as follows. First, a blank 2 as shown in Figure 1, provided.
  • the blank 2 may be e.g. be provided by punching or by laser cutting from a sheet material.
  • a deep drawing of the recesses 4a and 5 a takes place.
  • a first magnetic transition region 14 is formed on the cover element 4 and a second magnetic transition region 15 on the bottom element 5.
  • the deep drawing direction of the two recesses 4a, 5a is opposite to one another. That is, starting from the flat blank 2, the first magnetic transition region 14 is pulled down and the second magnetic transition region 15 is pulled upwards.
  • the bottom element 5 is in order an angle ⁇ of 90 ° to the still flat coil shell 3 set up. Thereby, the second magnetic transition region 15 is directed to the inside of the magnetic coil.
  • the coil shell 3 is rolled. That is, from the lying on both sides of the transverse axis Y flat portions of the coil shell these are rolled around, for example, a cylinder, so that the first and second abutting edge 3e, 3f with each other in
  • the coil jacket 3 has a cylindrical shape.
  • the provided at the corners of the coil shell recesses 3 a and 3d take on the Fixierflansch 5 b of the bottom element 5.
  • the fixing flange 5b can also serve as a stop.
  • a winding carrier 8 already prepared externally is provided with a winding carrier 8 already mounted on it
  • Winding 9 simply inserted into the now unilaterally open, hollow cylindrical coil shell 3.
  • the winding support 8 can be introduced loosely into the coil shell.
  • the cover element 4 is then folded by an angle ⁇ of 90 ° in the direction of the coil jacket 3, so that a closed housing of the magnet coil comprising the coil jacket 3, the bottom element 5 and the cover element 4 is made.
  • the solenoid coil 1 according to the invention is thus produced by a simple and cost-effective method from a single blank 2 and a separate winding support 8 together with winding 9.
  • the housing as it has been reshaped from the blank 2, does not necessarily require additional steps for a specific fixing of individual areas of the housing to each other, since all individual areas are related to each other. That is, there is no need to provide a welding step for generating the housing of the solenoid.
  • the method of the second embodiment corresponds to the steps shown in Figures 1 to 4 of the first embodiment.
  • the winding support 8, together with the winding 9 wound thereon is placed on the still flat coil jacket 3 by the angle ⁇ (FIG. 9).
  • the second magnetization region 15 can be used as a guide device and positioning device.
  • the lid member 4 is bent by an angle ß of 90 ° in the direction of the winding support 8. That is, the cover element 4 and the bottom element 5 are each bent by 90 ° with respect to the still flat coil shell 3.
  • the coil jacket 3 is then rolled around the lid member 4 and the bottom member 5 in the second embodiment.
  • FIGS. 12 and 13 Identical or functionally identical parts are again denoted by the same reference numerals as in the preceding embodiments.
  • the third embodiment corresponds to the first and second embodiments regarding the steps shown in Figs. However, in the method according to the third embodiment
  • the magnet coil according to the invention can thus be produced after the blank 2 has been provided and the deep-drawing of the two magnetization regions 14, 15 merely by shaping the blank, in particular rolling or bending.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Electromagnets (AREA)

Abstract

La présente invention concerne une bobine magnétique comprenant un support (8) d'enroulement avec un enroulement (9) et un boîtier avec une enveloppe (3) de bobine, un élément (4) couvercle et un élément (5) de fond. Selon l'invention, l'enveloppe (3) de bobine, l'élément (4) couvercle et l'élément (5) de fond sont réalisés d'une seule pièce. De plus, l'invention concerne un procédé de fabrication de la bobine magnétique ainsi qu'une pièce découpée à partir de laquelle peut être fabriqué un boîtier pour la bobine magnétique.
EP07857873A 2007-01-05 2007-12-19 Bobine magnétique et procédé pour sa fabrication Withdrawn EP2118916A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710001141 DE102007001141A1 (de) 2007-01-05 2007-01-05 Magnetspule sowie Verfahren zu deren Herstellung
PCT/EP2007/064252 WO2008080860A1 (fr) 2007-01-05 2007-12-19 Bobine magnétique et procédé pour sa fabrication

Publications (1)

Publication Number Publication Date
EP2118916A1 true EP2118916A1 (fr) 2009-11-18

Family

ID=39167701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07857873A Withdrawn EP2118916A1 (fr) 2007-01-05 2007-12-19 Bobine magnétique et procédé pour sa fabrication

Country Status (3)

Country Link
EP (1) EP2118916A1 (fr)
DE (1) DE102007001141A1 (fr)
WO (1) WO2008080860A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013211816B4 (de) * 2013-06-21 2025-04-03 Schaeffler Technologies AG & Co. KG Elektromagnetische Schaltvorrichtung sowie Verfahren zu ihrer Herstellung
DE102018003509A1 (de) * 2018-04-28 2019-10-31 Thomas Magnete Gmbh Elektromagnet und Verfahren zur Herstellung des Elektromagneten
DE102018003507B3 (de) 2018-04-28 2019-10-24 Thomas Magnete Gmbh Linearwirkendes Elektropumpenaggregat mit einem Balg und Verfahren zum Betrieb desselben
JP7041414B2 (ja) * 2018-10-31 2022-03-24 Smc株式会社 電磁弁
JP7306880B2 (ja) * 2019-06-03 2023-07-11 リンナイ株式会社 電磁ソレノイド装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262027A (en) * 1964-04-06 1966-07-19 Automatic Switch Co Solenoid structure and mounting means therefor
DE3445917A1 (de) * 1984-12-17 1986-06-19 Harting Elektronik Gmbh, 4992 Espelkamp Hubmagnet
DE19810330A1 (de) * 1998-03-11 1999-09-16 Mannesmann Rexroth Ag Magnetventil
DE10038091B4 (de) 2000-08-04 2009-01-15 Robert Bosch Gmbh Magnetventil, insbesondere für eine schlupfgeregelte, hydraulische Fahrzeugbremsanlage
JP2004523126A (ja) * 2001-04-19 2004-07-29 アスコ・コントロールズ・エル・ピー ソレノイドバルブアクチュエータのカプセル封入
DE10359364B4 (de) * 2003-12-18 2012-10-11 Schaeffler Technologies Gmbh & Co. Kg Elektromagnetisches Hydraulikventil, insbesondere 3/2-Wegeschaltventil zur Steuerung eines varialblen Ventiltriebes einer Brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008080860A1 *

Also Published As

Publication number Publication date
WO2008080860A1 (fr) 2008-07-10
DE102007001141A1 (de) 2008-07-10

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