EP0593517B1 - Elektromagnetsystem sowie verfahren und vorrichtung zum fügen von kern und joch bei dem elektromagnetsystem - Google Patents

Elektromagnetsystem sowie verfahren und vorrichtung zum fügen von kern und joch bei dem elektromagnetsystem Download PDF

Info

Publication number
EP0593517B1
EP0593517B1 EP92912458A EP92912458A EP0593517B1 EP 0593517 B1 EP0593517 B1 EP 0593517B1 EP 92912458 A EP92912458 A EP 92912458A EP 92912458 A EP92912458 A EP 92912458A EP 0593517 B1 EP0593517 B1 EP 0593517B1
Authority
EP
European Patent Office
Prior art keywords
core
yoke
mounting end
magnet system
hole
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
Application number
EP92912458A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0593517A1 (de
Inventor
Horst Hendel
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0593517A1 publication Critical patent/EP0593517A1/de
Application granted granted Critical
Publication of EP0593517B1 publication Critical patent/EP0593517B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/34—Means for adjusting limits of movement; Mechanical means for adjusting returning force
    • 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
    • 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
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0075—Apparatus or processes specially adapted for the manufacture of electric switches calibrating mechanical switching properties, e.g. "snap or switch moment", by mechanically deforming a part of the switch, e.g. elongating a blade spring by puncturing it with a laser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H2050/367—Methods for joining separate core and L-shaped yoke

Definitions

  • the invention relates to an electromagnet system, in particular for a relay, with an angled yoke and with a core which faces an armature with a pole end and is press-fitted with a fastening end in a bore in a yoke leg.
  • the invention also relates to a method and a device for joining the core and the yoke in this electromagnetic system.
  • Electromagnetic systems with a winding located on a coil former, a core running axially through the coil former and an angled yoke surrounding the coil on two outer sides are generally known and customary.
  • the core is pressed with its fastening end ahead from the pole side through the coil body into the bore of the yoke leg and, under certain circumstances, is fixed to the outside of the yoke by additional measures, such as notching or welding.
  • This direction of insertion is necessary in most magnet systems because the core at the pole end has an enlarged cross section to enlarge the pole area, with which it could not be inserted from the yoke side.
  • This conventional type of core fastening is also expedient if the coil body opening is readily accessible from the pole side or armature side.
  • the armature can only be put on after the core has been inserted, and the pole face must generally be adjusted, for example flush with the bearing edge of the yoke, before the armature is inserted.
  • a desired adjustment of the working air gap by moving the core after installation of the armature can usually only be carried out under difficult conditions.
  • the object of the invention is to provide a magnet system of the type mentioned in the introduction, in which the core can be inserted in a simple manner through the bore of the yoke leg and can be reliably and securely fastened to the precise dimensions.
  • the invention is intended to provide a method for joining the core and yoke and a device suitable therefor.
  • an electromagnet system for solving this problem is characterized in that the core has a constant cross-section which can be inserted through the bore of the yoke leg from its pole end to the vicinity of the fastening end and also has a conically widened conical section towards its fastening end and that the core at the fastening end penetrates the material of the yoke with a core diameter exceeding the bore diameter.
  • the core is flared at its fastening end, in contrast to known designs, so that it can first be inserted with the pole end from the outside through the bore of the yoke leg and, if appropriate, through a coil body, and only at the end of the Inserting movement a penetration of the core diameter and inner bore diameter of the yoke takes place.
  • the conical design of the core end results in a very good tight fit of the core in the yoke with an improved force and form fit as well as with an improved positioning accuracy of both parts. Since this core can be inserted from the yoke side, the yoke with the anchor, for example, can be preassembled before the core is inserted.
  • the fastening end of the core with the cone is preferably dimensioned such that the push-out force of the core actuates about 2/3 of the push-in force.
  • the cone section preferably has an incline of approximately 1 to 2 °, preferably 1.5 °, with respect to the coil axis.
  • the maximum diameter of the core at the fastening end is approximately 5 to 10% larger than the diameter of the core in the constant area or 3 to 5% larger than the diameter of the yoke bore in conventional relay magnet systems; the constant area of the core is namely slightly smaller than the yoke bore to facilitate insertion. For a coil core of, for example, 6 mm diameter, this results in a core oversize compared to the yoke bore of approximately 0.2 to 0.3 mm.
  • a method for joining the core and yoke in an electromagnet system, the core being inserted through a bore in a yoke leg and being fixed by pressing in the fastening end is characterized in that On the core, which is of constant thickness over a substantial part of its length, is formed through the bore of the yoke leg, a cone section which is widened toward the fastening end and whose diameter at the fastening end is larger than the diameter of the bore, so that the core with its pole end is ahead through the bore of the yoke leg is inserted and that the core is brought into its end position by impulsive force on the fastening end.
  • the core is first inserted with little force from the back of the yoke through the yoke bore and optionally a bobbin bore. Only when the conically enlarged fastening end enters the yoke hole is an increased force required, the press fit being increased by the pulse driving in of the core.
  • the wedge effect of the conical section creates a high surface pressure, so that the tight fit and the magnetic coupling between the two parts reach maximum values.
  • kinetic energy is used here, which, for example, is based on a plunger that accelerates to the appropriate speed and hits the core. Due to the high surface pressure, the initial strength multiplies between core and yoke after some time, which is caused by a cold flow movement of the penetrating surfaces. The strength can be further improved by exposure to heat, for example for an hour. The strength is improved with higher temperatures, the upper temperature limit being generally around 200 ° C. due to the plastic coil former. The resistance to prying the core out of the yoke is also improved, since the conical core fills the hole completely over the entire thickness of the yoke.
  • the method according to the invention of the impulse-like application of force does not require a counter position of the relay structure when inserting of the core in its end position, since the counterforce is actually generated by the inertia of the yoke and possibly the copper winding of the coil. It is sufficient to pivotally hold the relay in a relatively imprecise position in order to absorb the minor vibrations caused by the force impulses.
  • the displacement of the core that can be achieved per force pulse can be varied over a wide range via the intensity of the pulses, so that a high positioning accuracy of the core to the yoke or to the coil former can be achieved.
  • An advantageous device for joining the core and the yoke according to the method according to the invention has a tong-shaped holder which is able to hold the magnet system and can be freely pivoted about an axis perpendicular to the direction of the coil axis, and a striking device with a ram which can be driven in pulses and which can be adjusted in this way, that it axially strikes the mounting end of the core.
  • the magnet system for a relay shown in FIG. 1 has a winding 1 on a coil former 2, and also an angled yoke 3 with a first yoke leg 3a lying approximately parallel to the coil axis and a second yoke leg 3b running perpendicular to the coil axis.
  • a core 4 is inserted through the second yoke leg 3b and through the axial recess of the coil body 2, said core facing an armature 5 with a pole end 4a and held non-positively with a fastening end 4b in a bore 3c of the yoke leg 3b is.
  • the armature 5 is held with a leaf spring 6, only shown schematically, which also serves as a contact spring. This contact spring works with counter-contact elements, not shown, which are only assembled after the magnet system.
  • the core 4 has a consistently round cross-section over most of its length, including the pole end 4a, which is somewhat smaller than the bore 3c in the yoke leg 3b. Only in the area of the fastening end 4b is a conical section 4c formed, which widens conically towards the fastening end with an incline of approximately 1.5 °.
  • the core 4 is inserted with its pole end 4a in the direction of arrow 7 first into the bore 3c of the yoke leg 3b and then through the inner bore of the coil former 2, initially requiring little force. Only when the conical section 4c comes into contact with the yoke leg 3b are somewhat higher joining forces required. These joining forces are applied to the fastening end 4b in a pulsed manner with a plunger 8 (see FIG. 2).
  • the plunger can impinge in a dome-shaped recess 4d of the core, which at the same time represents a marking for the fastening end of the core; the conical enlargement at this end is so slight that it is not readily recognizable to the naked eye.
  • the core In the vicinity of the pole end 4a, the core also has nose-like or rib-shaped projections 9, which secure the core and the coil former against axial displacement.
  • FIG. 2 schematically shows a device for joining the core and the yoke for a magnet system according to FIG. 1.
  • the magnet system from FIG. 1 with the armature 5 already preassembled is accommodated in a tong-shaped holding device 10 between two jaws 11 and 12 in such a way that the coil axis lies horizontally when the holding device 10 has a bearing 12 about an axis of rotation 13 perpendicular to the axial direction of the coil is pivotally mounted.
  • a tappet 8 which can be actuated in pulses in the direction of arrow 7 with a drive device (not shown), applies a force pulse to the fastening end 4b of the core 4 each time the drive device is excited, the magnet system with the holding device 10 being able to dodge in the direction of the arrow 14.
  • the next force pulse can be applied.
  • a damping element 16 can be provided, which limits the deflection of the system and dampens the vibration.
  • the actual counterforce is generated by the inertia of the yoke and the coil.
  • the coil axis and the axis of rotation do not necessarily have to lie horizontally, but can assume any other positions in the room.
  • the position of the pole end 4a of the core or of the armature 5 resting on the pole end can be measured with a measuring probe 17.
  • the core can be driven further into the yoke with further force pulses of the same or different intensity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnets (AREA)
  • Resistance Welding (AREA)
EP92912458A 1991-07-09 1992-06-22 Elektromagnetsystem sowie verfahren und vorrichtung zum fügen von kern und joch bei dem elektromagnetsystem Expired - Lifetime EP0593517B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4122705A DE4122705C1 (OSRAM) 1991-07-09 1991-07-09
DE4122705 1991-07-09
PCT/DE1992/000512 WO1993001607A1 (de) 1991-07-09 1992-06-22 Elektromagnetsystem sowie verfahren und vorrichtung zum fügen von kern und joch bei dem elektromagnetsystem

Publications (2)

Publication Number Publication Date
EP0593517A1 EP0593517A1 (de) 1994-04-27
EP0593517B1 true EP0593517B1 (de) 1995-08-23

Family

ID=6435762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92912458A Expired - Lifetime EP0593517B1 (de) 1991-07-09 1992-06-22 Elektromagnetsystem sowie verfahren und vorrichtung zum fügen von kern und joch bei dem elektromagnetsystem

Country Status (7)

Country Link
US (1) US5519369A (OSRAM)
EP (1) EP0593517B1 (OSRAM)
JP (1) JPH06509438A (OSRAM)
AT (1) ATE126929T1 (OSRAM)
CA (1) CA2113096A1 (OSRAM)
DE (2) DE4122705C1 (OSRAM)
WO (1) WO1993001607A1 (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726055C1 (de) * 1997-06-19 1998-11-12 Siemens Ag Elektromagnetsystem und Verfahren zum Fügen von Kern und Joch in einem solchen System

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5905422A (en) * 1996-11-26 1999-05-18 Siemens Electromechanical Components, Inc. Relay adjustment structure
JP3590738B2 (ja) * 1999-04-27 2004-11-17 Ｎｅｃトーキン株式会社 電磁継電器およびその調整方法と組立方法
DE10304675B4 (de) * 2002-02-07 2009-08-20 Tyco Electronics Amp Gmbh Schaltrelais mit einer Magnetspule und Verfahren zum Herstellen eines Schaltrelais
JP4803206B2 (ja) * 2008-04-24 2011-10-26 パナソニック電工株式会社 リレー用電磁石
CN103794412B (zh) * 2014-02-08 2016-01-20 上海沪工汽车电器有限公司 一种电磁继电器及其制造方法
DE102021133231A1 (de) 2021-12-15 2023-06-15 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Elektromagnetische Vorrichtung, sowie Verfahren zum Herstellen einer solchen elektromagnetischen Vorrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735047A (en) * 1956-02-14 Antivibration solenoid structure
US4109221A (en) * 1976-12-09 1978-08-22 Emerson Electric Co. Retaining means for a solenoid assembly
DE3148052A1 (de) * 1981-12-04 1983-06-09 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisches relais und verfahren zu seiner herstellung
US4720909A (en) * 1983-10-31 1988-01-26 Amf Inc. Method of manufacturing miniature power switching relays
US4749977A (en) * 1984-11-26 1988-06-07 United Technologies Corporation Coil mounting arrangement and its method of manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726055C1 (de) * 1997-06-19 1998-11-12 Siemens Ag Elektromagnetsystem und Verfahren zum Fügen von Kern und Joch in einem solchen System
US6300851B1 (en) 1997-06-19 2001-10-09 Tyco Electronics Logistics Ag Electromagnet system and method for assembling a core and a yoke in such a system

Also Published As

Publication number Publication date
JPH06509438A (ja) 1994-10-20
WO1993001607A1 (de) 1993-01-21
US5519369A (en) 1996-05-21
ATE126929T1 (de) 1995-09-15
DE59203404D1 (de) 1995-09-28
CA2113096A1 (en) 1993-01-21
EP0593517A1 (de) 1994-04-27
DE4122705C1 (OSRAM) 1992-07-30

Similar Documents

Publication Publication Date Title
DE102013219878B3 (de) Elektromagnetisch betätigbare Federdruckbremse sowie Verfahren zur Herstellung derselben
EP0466852B1 (de) Selbstbohrender befestiger
CH661165A5 (de) Elektromechanischer wandler mit justierbarem ankerjoch und verfahren zum justieren des ankerjochs.
EP0593517B1 (de) Elektromagnetsystem sowie verfahren und vorrichtung zum fügen von kern und joch bei dem elektromagnetsystem
DE102013004322B4 (de) Magnetplatte für einen Linearmotor zum Verhindern einer Fehlausrichtung von Magneten
DE2913090A1 (de) Befestigungselement mit ankerbolzen und spreizkeil
DE3425079A1 (de) Mit einer welle verbundener koerper
DE2620269A1 (de) Elektromagnet
DE2717077C3 (de) Halterung für einen Klappankermagneten eines Mosaikdruckkopfes
EP0918940A1 (de) Verbindung zwischen zwei bauteilen
DE4436616C2 (de) Hubmagnet und Verfahren zu seiner Herstellung
DE3240215C1 (de) Elektromagnetisches Relais
EP3822526B1 (de) Baugruppe, ventil und verfahren zum montieren der baugruppe
EP0110133B1 (de) Elektromagnetisches Relais
DE102004013413A1 (de) Kraftstoff-Einspritzventil
DE19726055C1 (de) Elektromagnetsystem und Verfahren zum Fügen von Kern und Joch in einem solchen System
WO2023111019A1 (de) Elektromagnetische vorrichtung, sowie verfahren zum herstellen einer solchen elektromagnetischen vorrichtung
DE3644151C2 (OSRAM)
DE4210740A1 (de) Elektromagnet mit einem Hubanker
DE102022102935B4 (de) Verbindungsanordnung zum Verbinden eines Pfostens mit einem Rahmenprofil eines Fensters oder einer Türe aus Kunststoff
DE19923393C1 (de) Elektromagnetisch betätigte Reibungsbremse
EP0392051A1 (de) Verfahren und Anordnung zum Befestigen eines Zentrierstiftes
EP0287022B1 (de) Dübel, insbesondere Heizkörperdübel
DE10241838B4 (de) Haftmagnet
DE3825498C2 (OSRAM)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19930604

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR GB IT LI

17Q First examination report despatched

Effective date: 19941014

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI

REF Corresponds to:

Ref document number: 126929

Country of ref document: AT

Date of ref document: 19950915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59203404

Country of ref document: DE

Date of ref document: 19950928

ET Fr: translation filed
ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19951106

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19980604

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19980911

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990622

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010531

Year of fee payment: 10

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020501

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020628

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030622

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030622

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050622