EP0374552A2 - Procédé de fabrication d'un relais électromagnétique et relais ainsi obtenu - Google Patents

Procédé de fabrication d'un relais électromagnétique et relais ainsi obtenu Download PDF

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Publication number
EP0374552A2
EP0374552A2 EP89122261A EP89122261A EP0374552A2 EP 0374552 A2 EP0374552 A2 EP 0374552A2 EP 89122261 A EP89122261 A EP 89122261A EP 89122261 A EP89122261 A EP 89122261A EP 0374552 A2 EP0374552 A2 EP 0374552A2
Authority
EP
European Patent Office
Prior art keywords
yoke
projection
wall
core
relay
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
Application number
EP89122261A
Other languages
German (de)
English (en)
Other versions
EP0374552A3 (fr
EP0374552B1 (fr
Inventor
Hans Peter Stribel
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.)
Stribel GmbH
Original Assignee
Stribel 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 Stribel GmbH filed Critical Stribel GmbH
Publication of EP0374552A2 publication Critical patent/EP0374552A2/fr
Publication of EP0374552A3 publication Critical patent/EP0374552A3/fr
Application granted granted Critical
Publication of EP0374552B1 publication Critical patent/EP0374552B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core

Definitions

  • the invention relates to a method for producing an electromagnetic relay with the features of the preamble of claim 1 and a relay produced by the method.
  • the magnetic resistance in the magnetic circuit is as small as possible.
  • the magnetic resistance is often unsatisfactorily high, since the connection between the yoke and the coil core is inadequate and, in addition, is subject to considerable temperature and vibration stresses during relay operation.
  • the pole face of the coil core and the abutment for the relay armature are precisely matched to each other in order to keep the magnetic resistance small at this point.
  • the coil core is pressed into the wall of the yoke until the desired dimension is reached.
  • the object of the invention is to develop a method for producing a relay with the features of the preamble of claim 1 in such a way that a magnetically low-resistance, fixed yoke-core connection is achieved with simple means by adjusting the length of the core with little force.
  • An advantageous relay produced by the method is characterized by the features of claim 2.
  • the relay 1 can be installed on a printed circuit board 2, which can have conductor tracks (not shown here) on its lower and / or upper side.
  • the relay 1 has a yoke 3 made of a ferromagnetic material, which has a rear wall 4 and a leg 5 bent at right angles therefrom.
  • a core 7 is provided with a reduced diameter extension 6, which is also made of ferromagnetic material and is at a distance parallel to the leg 5 with its axis 8.
  • the core 7 carries a coil body 9 made of insulating material, which has an end plate 10 and a back plate 11 and carries a coil 12 wound from coil wire.
  • the relay 1 On the underside of the relay 1 can be provided on the yoke wall 4 formed mounting pin 13 and to the normally closed contacts 14, working contacts 15 and coil connecting parts 16 plug pins 17 are provided, which are arranged at a distance from one another in accordance with a hole pattern formed in the printed circuit board 2 are and can be inserted into the holes in the circuit board 2.
  • an upwardly projecting pin 18 can be formed, to which a helical tension spring 19 can be attached.
  • the other end of the coil spring 19 can be fastened to a web 20, which also protrudes upward, of a hinged anchor 21 which is also made of ferromagnetic material.
  • the hinged anchor 21 is pivotally mounted on an abutment 22 formed on the yoke leg 5.
  • a metal braid 23 can be attached, which is contacted with its other end on the hinged anchor 21.
  • a thin contact spring plate 24 can be provided, which can have one or more switching contacts 25 arranged between the normally closed contacts 14 and the working contacts 15.
  • a passage 26 can be formed on the rear wall 4 of the yoke 3, which can have a projection 28 projecting on the inside 27 of the yoke wall 4 and a recess 29 which is formed on the opposite outside 30 of the yoke wall 4 is.
  • the extension 6 of the core 7 can be inserted into the hole 31 determining the inside diameter of the passage 26, so that the core 7 comes to rest with a stop surface 32 on an annular surface 33 delimited by the outside diameter and the inside diameter of the projection 28.
  • the diameter of the core 7 and the outer diameter of the protrusion 28 may preferably be approximately the same.
  • the diameter of the coil core extension 6 expediently be the same or only slightly smaller than the diameter of the pull-through hole 31, so that the extension 6 can be inserted into the projection 28 largely without play during assembly.
  • the width of the circular ring surface 33 which is limited by the inner diameter and the outer diameter of the projection 28, so that it is approximately as wide as the thickness of the yoke wall 4.
  • the passage 26 formed in the yoke wall 4 can advantageously be designed such that the dimension of the rear recess 29 and the length of the projection 28 projecting beyond the yoke wall inside 27 are approximately the same in the axial direction.
  • the dimension of the recess 29 within the yoke wall 4 and / or the length of the projection 28 projecting on the inside 27 in the axial direction such that it is approximately equal to or greater than half the thickness of the yoke wall 4.
  • the axial length of the extension 6 can be somewhat larger than the distance between the bottom of the recess 29 and the annular surface 33, so that the extension 6 protrudes into the recess 29 of the passage 26.
  • the stop surface 32 of the coil core 7 is pressed firmly against the annular surface 33 of the protruding wall projection 28, in such a way that the wall projection 28 is pushed back towards the plane of the yoke wall 4, so that the core stop surface 32 and the annular surface 33 are approximately in or slightly in front of the plane of the inside 27 of the yoke wall 4, as shown in FIG. 3 is shown in the final assembly position.
  • the projection 28 has preferably been pushed back so far that the core pole surface 34 lies in the same plane as the abutment 22.
  • the from FIG. 2 apparent distance 37 between the plane of the abutment 22 and the plane of the pole face 34 is in the preferred embodiment shown in FIG. 1 and 3 no longer, but has essentially been reduced to zero.
  • An advantage of the manufacturing method according to the invention and the relay manufactured according to it is that the core 7 can be connected extremely dimensionally and permanently firmly to the yoke wall 4, wherein there is also a large-area material bond in the connection area of the two parts, so that a small magnetic contact resistance high magnetic force flux can be achieved.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacture Of Motors, Generators (AREA)
EP89122261A 1988-12-20 1989-12-02 Procédé de fabrication d'un relais électromagnétique et relais ainsi obtenu Expired - Lifetime EP0374552B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842815 1988-12-20
DE3842815A DE3842815A1 (de) 1988-12-20 1988-12-20 Verfahren zur herstellung eines elektromagnetischen relais und danach hergestelltes relais

Publications (3)

Publication Number Publication Date
EP0374552A2 true EP0374552A2 (fr) 1990-06-27
EP0374552A3 EP0374552A3 (fr) 1994-01-19
EP0374552B1 EP0374552B1 (fr) 1997-06-18

Family

ID=6369588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122261A Expired - Lifetime EP0374552B1 (fr) 1988-12-20 1989-12-02 Procédé de fabrication d'un relais électromagnétique et relais ainsi obtenu

Country Status (8)

Country Link
US (1) US5051716A (fr)
EP (1) EP0374552B1 (fr)
AT (1) ATE154723T1 (fr)
BR (1) BR8906577A (fr)
DE (3) DE8815777U1 (fr)
ES (1) ES2104559T3 (fr)
IE (1) IE80480B1 (fr)
PT (1) PT92632B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0707332A1 (fr) * 1994-10-12 1996-04-17 Robert Bosch Gmbh Relais électromagnétique et méthode de sa fabrication

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10304675B4 (de) * 2002-02-07 2009-08-20 Tyco Electronics Amp Gmbh Schaltrelais mit einer Magnetspule und Verfahren zum Herstellen eines Schaltrelais
ITPC20050005U1 (it) * 2005-03-10 2006-09-11 Electrica Srl Rele' voltmetrico con connettori rigidi atti a collegare il filo della bobina ai terminali faston
TWI680483B (zh) * 2019-07-03 2019-12-21 百容電子股份有限公司 電磁繼電器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210031A1 (de) * 1982-03-19 1982-10-21 Alois Zettler Elektrotechnische Fabrik GmbH, 8000 München Joch-kern-verbindung an elektromagnetischen relais
EP0082238A1 (fr) * 1981-12-18 1983-06-29 Hermann Stribel KG Relais
US4596972A (en) * 1983-10-31 1986-06-24 Amf Incorporated Miniature power switching relays
US4749977A (en) * 1984-11-26 1988-06-07 United Technologies Corporation Coil mounting arrangement and its method of manufacture

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1543930A (fr) * 1966-10-13 1968-10-31 Soprotekel Mode de fixation des noyaux magnétiques dans les relais ou pièces polaires
US4720909A (en) * 1983-10-31 1988-01-26 Amf Inc. Method of manufacturing miniature power switching relays

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082238A1 (fr) * 1981-12-18 1983-06-29 Hermann Stribel KG Relais
DE3210031A1 (de) * 1982-03-19 1982-10-21 Alois Zettler Elektrotechnische Fabrik GmbH, 8000 München Joch-kern-verbindung an elektromagnetischen relais
US4596972A (en) * 1983-10-31 1986-06-24 Amf Incorporated 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
EP0707332A1 (fr) * 1994-10-12 1996-04-17 Robert Bosch Gmbh Relais électromagnétique et méthode de sa fabrication
US5689222A (en) * 1994-10-12 1997-11-18 Robert Bosch Gmbh Electromagnetic relay and method for the production thereof

Also Published As

Publication number Publication date
ES2104559T3 (es) 1997-10-16
DE3842815C2 (fr) 1990-12-20
DE58909803D1 (de) 1997-07-24
IE80480B1 (en) 1998-08-12
PT92632A (pt) 1990-06-29
US5051716A (en) 1991-09-24
PT92632B (pt) 1995-09-12
DE3842815A1 (de) 1990-06-21
BR8906577A (pt) 1990-09-04
ATE154723T1 (de) 1997-07-15
EP0374552A3 (fr) 1994-01-19
EP0374552B1 (fr) 1997-06-18
DE8815777U1 (fr) 1990-04-26

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