EP0768694A2 - Relais électromagnétique et méthode pour sa fabrication - Google Patents

Relais électromagnétique et méthode pour sa fabrication Download PDF

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Publication number
EP0768694A2
EP0768694A2 EP96115749A EP96115749A EP0768694A2 EP 0768694 A2 EP0768694 A2 EP 0768694A2 EP 96115749 A EP96115749 A EP 96115749A EP 96115749 A EP96115749 A EP 96115749A EP 0768694 A2 EP0768694 A2 EP 0768694A2
Authority
EP
European Patent Office
Prior art keywords
yoke
core
coil
flange
leg
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
EP96115749A
Other languages
German (de)
English (en)
Other versions
EP0768694A3 (fr
EP0768694B1 (fr
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.)
TE Connectivity Solutions GmbH
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Publication of EP0768694A2 publication Critical patent/EP0768694A2/fr
Publication of EP0768694A3 publication Critical patent/EP0768694A3/fr
Application granted granted Critical
Publication of EP0768694B1 publication Critical patent/EP0768694B1/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
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0087—Welding switch parts by use of a laser beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H2050/049—Assembling or mounting multiple relays in one common housing

Definitions

  • Relays with such a general structure are widely known; they can be designed as single or double relays (e.g. DE 42 33 807 A1, DE 38 43 359 C2).
  • the connection between the core and the first yoke leg usually takes place in that the core is inserted into a bore in the yoke leg and then fixed by caulking, welding or in some other way.
  • the connection point for the attack of large holding devices and tools must be accessible. This is the case with single relays, but with double relays this has resulted in previous designs two individual magnet systems with coil, core and yoke were manufactured and only subsequently connected to form the double relay. For example, in these cases it was not possible to provide a common coil body for two magnet systems with both windings in one operation and then to mount the iron circuit with yokes and cores in such a double coil.
  • connection point between the core and the yoke represents a magnetic resistance in the iron circuit, which increases in importance with the increasing miniaturization of the overall system and the associated reduction in the material thicknesses for the yoke and the core. It is important, on the one hand, that the material connection between the core and the yoke is as good as possible and that it is retained over the service life of the relay, so that the connection is not loosened by external forces acting on the yoke.
  • the coupling surface between the core end and an annular recess in the yoke leg becomes increasingly smaller as the material thickness of the yoke decreases. With a sheet thickness of the yoke of less than 1 mm, this coupling surface in a yoke bore represents considerable magnetic resistance even when the two parts are well connected.
  • the aim of the present invention is therefore to construct a relay of the type mentioned in the introduction and to specify a method for the connection between the core and the yoke, which enables a good mechanical and magnetic coupling between the core and the yoke in a simple manner even with small material thicknesses which can neither be impaired nor destroyed by the action of external mechanical forces on the yoke.
  • This connection between the core and the yoke should be able to be established without particular difficulty both in the case of a single relay and in the case of a double relay, even if the connection point is not accessible from the outside for the attack of larger tools.
  • this goal is achieved in a relay of the type mentioned in that the first yoke leg is secured in the first coil flange by holding elements against movement in the axial direction and against pivoting and that the core butt abuts the side surface of the first yoke leg with its first end and is cohesively connected to it only via its end face.
  • the hole in the first yoke leg for receiving the core end is therefore omitted; rather, the end face of this core is butt-welded or soldered to the side surface of the yoke.
  • a larger coupling surface between the core and the yoke is achieved via this end face than via the yoke bore previously customary, since the annular coupling surface in the bore becomes very small with a very low material thickness of the yoke.
  • the additional fixation of the yoke by holding elements of the coil flange also ensures that the welded or soldered connection receives good quality during manufacture and that this quality of the connection is also guaranteed over the lifetime of the relay, since external forces on the yoke are caused by it Fixation in the coil flange are caught, so they can not affect the connection point.
  • the mounting of the first yoke leg in the coil flange preferably consists in that the first yoke leg with parallel side edges is inserted in a drawer-like manner perpendicular to the coil axis in grooves of the first coil flange.
  • the yoke leg is appropriately caught on three sides in grooves of the coil flange, so that only a movement in the direction of insertion is possible up to the stop.
  • connection of core and yoke specified according to the invention is fundamentally also advantageous in the case of individual relays, in particular when using very thin yoke plates, for example with a thickness of less than 1 mm.
  • very thin yoke plates for example with a thickness of less than 1 mm.
  • two bobbins, each with a winding, a core, a yoke and an armature are constructed and connected to each other in such a mirror image that the coil axes are aligned and the first two yoke legs are parallel - while maintaining an insulating distance .
  • the two bobbins by means of a one-piece double bobbin, a common first flange as the central flange carrying the two first yoke legs and the two second flanges as end flanges on opposite sides of the relay. Since the first two yoke legs of such a double relay with the corresponding core ends are not accessible for another joining method, in this case the type of connection according to the invention only enables such a relay structure in which both windings can be applied to a common coil former beforehand and the two Cores are subsequently inserted into the double bobbin from two opposite sides. It is also possible to use cores with enlarged pole plates, since the cores are inserted into the respective bobbin from the armature side.
  • This method can also be used analogously for the double relay mentioned, in which case the two first yoke legs are inserted in parallel into corresponding grooves in the central flange and these two first yoke legs are preferably connected to a first welding potential by an interposed contact plate, while the two cores are parallel can be connected to a second welding potential.
  • the welding current is expediently dimensioned such that a type of brazing occurs between the respective core and the respective yoke, a surface coating of the parts with copper, silver or another brazing material forming the connection.
  • All metals that alloy with iron and have a lower melting point than iron can be used, for example around 1000 ° C or lower.
  • the layer thickness of the brazing material on the surface of the core or yoke is usually between 4 and 6 ⁇ m.
  • the contacting plate mentioned does not weld to the two yoke legs, since it forms a very large contact area with them; after welding or brazing, it can easily be pulled out of the central flange.
  • the arrangement of the two switching systems with cores aligned with one another and closely arranged first yoke legs which is made possible by the type of core-yoke connection according to the invention, also results in a close magnetic coupling of the two switching systems.
  • This magnetic coupling can also be used of the double relay can be used. If, for example, the two excitation coils are wound and excited so that the magnetic fluxes through both cores are in series, the excitation of one magnet system also supports the response of the other, so that the overall reliability of the double relay is improved. In certain cases the mutual influence can also be exploited by correspondingly opposite excitation.
  • the relay shown in FIGS. 1 and 2 has a base 1 on which two switching systems A and B are arranged mirror-symmetrically to a plane of symmetry defined by the coordinates x and z in FIG. Since in the two switching systems A and B all parts are either arranged mirror-symmetrically or mirror-symmetrically designed and the have the same function, the same reference numerals are used for both switching systems.
  • the base 1 is essentially designed as a flat plate which defines a bottom side 11; on this an extension 12 is formed vertically upwards, which is designed like a labyrinth to form plug channels 13 for two pairs of fixed contact carriers 14 and 15 and plug channels 16 for two spring carriers 17.
  • the fixed contact carrier and the spring carrier each emerge with connecting pins to the underside of the base 1.
  • the fixed contact carrier 14 carries a normally closed contact 14a, while the fixed contact carrier 15 is provided with a normally open contact 15a.
  • Each of the two spring supports 17 has a soldering tab 17a bent to the side.
  • a double bobbin 2 is arranged on the base. It has a central flange 21 and two end flanges 22 lying in the plane of symmetry between the two switching systems, a winding 23 being arranged in each case between the central flange and each of the end flanges.
  • Each of the end flanges 22 has on the side facing away from the spring supports 14 and 15 a flange shoulder 24 with two coil connecting pins anchored therein.
  • a core 31 with a pole plate 32 is inserted from the outside into the coil body, so that the Pole plate 32 is partially in a recess of the end flange 22; towards the flange extension 24, the pole plate is cut on one side.
  • each switching system has an angled yoke 33 with a first yoke leg 34 and a second yoke leg 35, both of which are perpendicular to one another and perpendicular to the bottom side 11.
  • the first two yoke legs 34 are inserted parallel to one another into a lateral opening 26 in the central flange 21 (see also FIG. 6).
  • This opening 26 in the central web has a circumferential central web 27, whereby for each of the yoke legs 34 a peripheral groove 28 is formed on three sides, into which the respective yoke leg 34 is inserted like a drawer.
  • the thickness of the web 27 ensures the insulating distance between the two yoke legs 34.
  • An approximately plate-shaped anchor 4 is also perpendicular to the bottom side 11 with its main plane; in the present example it is slightly cranked only in adaptation to the shape of the bobbin.
  • the armature 4 is mounted on the free end edge 35a of the second yoke leg 35 without being connected to the yoke via a bearing spring or the like. Rather, the armature is mounted and held via a contact spring 41, which rests laterally with an end section 41a on the armature and is connected to the armature via one or two rivets 42. Starting from the end section 41a, the contact spring 41 is fork-shaped in the direction of the free armature end and thus forms a contact leg 43 with a movable center contact 43a and a connecting leg 44.
  • All sections of the cranked and bent contact spring 41 are perpendicular to the bottom side 11, so that the contact leg 43 is substantially above the connecting leg 44.
  • a fastening section 45 is bent approximately perpendicularly and carries at its free end a spring tab 46 bent inward in the shape of a hook.
  • the fastening section 45 is inserted between a vertical insulating wall 18 of the base attachment 12 on the one hand and the soldering tab 17a of the spring support 17 and clamped to the attachment 12 of the base 1 with the spring tab 46.
  • the soldering tab 17a is conductively connected to the fastening section 45, preferably soldered or welded.
  • the base 1 is first equipped with the contact carriers.
  • the fixed contact carrier 14 and 15 for both switching systems can be cut free in pairs from a band and bent into their final shape.
  • both pairs of fixed contact carriers 14 and 15 are inserted into the base at the same time and only then separated.
  • the two spring supports 17 for both switching systems are preferably inserted in the base 1 in a coherent manner and only then separated from one another at the separation point 143.
  • the intended butt welding of the core to the yoke leg 34 is particularly advantageous if the yoke consists of a thin and space-saving sheet, for example with a thickness of ⁇ 1 mm.
  • the effective magnetic saturation values for thin sheets also have a positive effect on the magnetic circuit.
  • This type of butt welding or soldering of the core can be carried out in the relay according to the invention because the first yoke leg 34 is guided in the grooves 28 of the central flange 21 and is kept stable. Since the core 31 itself is also held in the coil body, the connection point 36 (see FIGS. 5 and 6) is not loaded by any leverage forces, so that the butted solder connection is not endangered. Otherwise, the two core-yoke connections can be made simultaneously. For this purpose, a contact plate 37 is inserted into the insulating gap between the two first yoke legs 34, which is connected to one pole of the welding current source.
  • the two connection points 36 can be welded or brazed simultaneously.
  • the contact plate 37 is then pulled out of the coil former.
  • the coil former 2 which is equipped with the cores and yokes, is positioned on the base, with cold lugs 29 latching onto the central flange 21 and onto the flange extensions 29 in correspondingly undercut recesses 19 in the base.
  • the two anchors 4 with the mirror-symmetrically bent contact springs 41 are inserted into the base after the coil former, the fastening section 45 of the respective contact spring being inserted between the insulating wall 18 and the soldering tab 17a and clamped onto the shoulder 12 of the base by means of the spring tab 46.
  • the soldering tab 17a is preferably provided with a tin coating 17b on the side facing the fastening section 45, so that it can be soldered to the fastening section 45 of the contact spring 41 with the aid of a heat source. This is done, for example, using a TIG arc. A soldered or welded connection using a laser or another heat source would also be possible.
  • the construction according to the invention can be implemented not only as a double relay, but also as a single relay.
  • the double relay along the mirror plane, as indicated in FIG. 1 needs to be halved.
  • Such a section is shown in FIG. 4.
  • To complete the individual relay thus created it is only necessary to adapt the halved base and the halved coil body on the cut side, so that the closed individual relay is produced with a housing cap which is also half the size. The remaining parts can also be used unchanged for the individual relay, so that a separate description is unnecessary.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP96115749A 1995-10-09 1996-10-01 Relais électromagnétique et méthode pour sa fabrication Expired - Lifetime EP0768694B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537613 1995-10-09
DE19537613 1995-10-09

Publications (3)

Publication Number Publication Date
EP0768694A2 true EP0768694A2 (fr) 1997-04-16
EP0768694A3 EP0768694A3 (fr) 2000-04-12
EP0768694B1 EP0768694B1 (fr) 2002-05-08

Family

ID=7774421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115749A Expired - Lifetime EP0768694B1 (fr) 1995-10-09 1996-10-01 Relais électromagnétique et méthode pour sa fabrication

Country Status (5)

Country Link
US (1) US5889454A (fr)
EP (1) EP0768694B1 (fr)
JP (1) JP3844817B2 (fr)
AT (1) ATE217441T1 (fr)
DE (1) DE59609182D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3870049B2 (ja) * 2001-08-17 2007-01-17 Ｎｅｃトーキン株式会社 電磁継電装置
JP4289301B2 (ja) * 2005-01-13 2009-07-01 オムロン株式会社 電磁継電器
US8193881B2 (en) * 2007-09-14 2012-06-05 Fujitsu Component Limited Relay
CN101923994A (zh) * 2009-06-16 2010-12-22 三信国际电器上海有限公司 一种电磁式漏电脱扣器的接线系统
JP5741338B2 (ja) * 2011-09-15 2015-07-01 オムロン株式会社 端子部材のシール構造、及び、電磁継電器
JP2014165152A (ja) * 2013-02-27 2014-09-08 Fujitsu Component Ltd 電磁継電器
JP6631068B2 (ja) * 2015-07-27 2020-01-15 オムロン株式会社 接点機構およびこれを用いた電磁継電器
US9754747B1 (en) * 2016-04-25 2017-09-05 Song Chuan Precision Co., Ltd. Relay device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1659843U (de) * 1951-12-04 1953-07-23 Philips Nv Winkelankerrelais.
US2857494A (en) * 1955-06-10 1958-10-21 Nicholas M Esser Electromagnetic device
FR1543930A (fr) * 1966-10-13 1968-10-31 Soprotekel Mode de fixation des noyaux magnétiques dans les relais ou pièces polaires
FR2335030A1 (fr) * 1975-12-08 1977-07-08 Elesta Ag Elektronik Relais electromagnetique et son procede de fabrication
US4320369A (en) * 1980-01-21 1982-03-16 Littelfuse, Inc. Electrical relay device and method of making the same
US4816794A (en) * 1986-07-30 1989-03-28 Omron Tateisi Electronics Co. Electromagnetic relay
DE3834283A1 (de) * 1988-10-08 1990-04-12 Bosch Gmbh Robert Umschaltrelais fuer gleichstrommotore mit links- und rechtslaufsteuerung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE924873C (de) * 1952-04-20 1955-03-10 Zahnradfabrik Friedrichshafen Schaltanlage fuer einen umsteuerbaren Elektromotor, insbesondere zur Verwendung in Kraftfahrzeugen
DE6908276U (de) * 1969-03-01 1969-06-19 Rau Swf Autozubehoer Aufbauteil fuer ein in ein gehaeuse einsetzbares elektrisches geraet mit elektromagnet.
US4959627A (en) * 1987-12-23 1990-09-25 Nec Corporation Electromagnet relay
US5239281A (en) * 1990-06-29 1993-08-24 Takamisawa Electric Co., Ltd. Small sized electromagnetic relay
DE4233807C2 (de) * 1991-10-08 1997-04-30 Original Electric Mfg Co Elektromagnetisches Relais
DE4244247A1 (de) * 1992-12-24 1994-07-07 Kuhnke Gmbh Kg H Elektromagnetische Anordnung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1659843U (de) * 1951-12-04 1953-07-23 Philips Nv Winkelankerrelais.
US2857494A (en) * 1955-06-10 1958-10-21 Nicholas M Esser Electromagnetic device
FR1543930A (fr) * 1966-10-13 1968-10-31 Soprotekel Mode de fixation des noyaux magnétiques dans les relais ou pièces polaires
FR2335030A1 (fr) * 1975-12-08 1977-07-08 Elesta Ag Elektronik Relais electromagnetique et son procede de fabrication
US4320369A (en) * 1980-01-21 1982-03-16 Littelfuse, Inc. Electrical relay device and method of making the same
US4816794A (en) * 1986-07-30 1989-03-28 Omron Tateisi Electronics Co. Electromagnetic relay
DE3834283A1 (de) * 1988-10-08 1990-04-12 Bosch Gmbh Robert Umschaltrelais fuer gleichstrommotore mit links- und rechtslaufsteuerung

Also Published As

Publication number Publication date
ATE217441T1 (de) 2002-05-15
DE59609182D1 (de) 2002-06-13
EP0768694A3 (fr) 2000-04-12
JPH09129105A (ja) 1997-05-16
JP3844817B2 (ja) 2006-11-15
EP0768694B1 (fr) 2002-05-08
US5889454A (en) 1999-03-30

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