EP0214469A1 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
EP0214469A1
EP0214469A1 EP86110873A EP86110873A EP0214469A1 EP 0214469 A1 EP0214469 A1 EP 0214469A1 EP 86110873 A EP86110873 A EP 86110873A EP 86110873 A EP86110873 A EP 86110873A EP 0214469 A1 EP0214469 A1 EP 0214469A1
Authority
EP
European Patent Office
Prior art keywords
armature
yoke
coil
retaining
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
EP86110873A
Other languages
German (de)
English (en)
Other versions
EP0214469B1 (fr
Inventor
Michael Dipl.-Ing. Dittmann
Heinz Stadler
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
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
Priority claimed from DE19853528715 external-priority patent/DE3528715A1/de
Priority claimed from DE19853543092 external-priority patent/DE3543092A1/de
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT86110873T priority Critical patent/ATE58800T1/de
Publication of EP0214469A1 publication Critical patent/EP0214469A1/fr
Application granted granted Critical
Publication of EP0214469B1 publication Critical patent/EP0214469B1/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
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/28—Parts movable due to bending of a blade spring or reed

Definitions

  • the invention relates to an electromagnetic relay with a bobbin serving as a base body, which carries a winding between two flanges and a pocket-shaped contact space is formed on the first flange, with an angular yoke, the first leg of which runs perpendicular to the coil axis on the second bobbin flange, with a is coupled in the core of the coil and forms a connecting pin at its free end and its second leg runs parallel to the coil axis above the winding, further with a plate-shaped armature, which is mounted on a bearing edge at the free end of the second yoke leg and on the front side in front of the first coil flange forms a working air gap with the free core end, with an armature retaining spring which is fastened to the yoke with a first section, is fastened to the armature with a second section lying thereon, and with a third section as a contact spring in the contact space is sufficient, as well as with a protective cap placed over the bob
  • Such a relay is known for example from DE-GM 82 35 283.
  • the armature retaining spring is guided in an arc over the armature bearing, and the first spring section lies flat on the top of the second yoke leg.
  • the point of attachment of the armature retaining spring is thus behind the bearing edge on the wide yoke leg, so that subsequent adjustment of this spring and thus adjustment of the armature restoring force is no longer possible.
  • the dielectric strength between the yoke and the winding is not sufficient for different applications.
  • the object of the invention is to constructively modify and refine a relay of the type mentioned at the outset without impairing its compact design in such a way that the required characteristic values can be achieved or adjusted by simple measures and in particular that all parts are designed such that the coil space is sealed off from the contact space and can be filled with sealing compound if necessary to increase the dielectric strength and at the same time to seal the contact space.
  • this object is achieved in that the second yoke leg has at its free end at least one holding pin projecting beyond the bearing edge, the armature possibly having a recess in the area of the holding pin, and in that the armature holding spring with its first section in the area in front of the Bearing edge on which the support pin rests and is fastened.
  • the anchor retaining spring is only attached in the area in front of the bearing edge and in front of the anchor itself.
  • the armature restoring force can be adjusted by bending the retaining pin or the retaining pin.
  • a predetermined bending point with a reduced cross section is expediently provided on the holding pin or pins. Neither the narrowing of the yoke cross-section by the formation of the holding pins nor the predetermined bending point impair the magnetic flux of the iron circuit, since the holding pins are already outside the bearing edge.
  • the anchor retaining spring can be bent and shaped differently to suit the type of retaining pin or the retaining pin, for example with a central spring bar and two outer fastening tabs if the retaining pins are each arranged in the side region of the yoke end, or with a central one Recess between two side spring bars and a cross bar for attachment to a central retaining pin.
  • the holding pin extends in the extension of the plane of the second yoke leg, but this or these can also form an angle with respect to the yoke leg plane.
  • the holding pin in front of the anchor could be bent or bent upwards.
  • the first section of the holding spring can either be bent outwards from the support on the armature, ie away from the armature, or this first foot the section can first be bent away from the anchor surface and then inwards, ie towards the anchor in the plane of the yoke surface.
  • the holding spring with its different sections can perform different functions, for example to protect the anchor from impact.
  • a major advantage of the fastening of the anchor retaining spring according to the invention to projecting retaining pins of the yoke is that this construction leaves the surface of the second yoke leg free up to the bearing edge, so that neither a moving part, such as the bearing spring, extends into the area above the winding still has the surface of the yoke by such a bearing spring additional, difficult to seal steps.
  • a particularly advantageous embodiment of the invention it is possible to achieve a separation between the coil space and the switching space by means of a rib formed in the protective cap and resting on the second yoke leg in the region of the first coil flange and lying on both sides of the first coil flange. the latter comprising the movable parts and the contact elements and enclosing the pocket-shaped contact space.
  • the rib of the protective cap forms with the second yoke leg on the top of the relay and with the first coil flange on both sides a continuous capillary gap, which also potting compound when filling the coil space with potting compound, but does not flow into the switch room due to the capillary effect.
  • the contact space formed on the first coil flange with the corresponding opposite side walls of the protective cap also forms a continuous capillary gap, so that the switching space, including the contact space, is encircled when the coil space is cast is sealed.
  • the potting compound which is filled up to the edge of the protective cap on the connection side of the relay, at the same time seals the bushings for the contact elements fastened in the contact space by insertion.
  • the second coil flange has ribs formed on both sides and enclosing the first yoke leg.
  • the dielectric strength of the relay is significantly increased by pouring casting compound into the coil space, since the space between the coil winding and the second yoke leg arranged above the winding is completely filled with insulating material.
  • a transverse web which runs parallel to the bearing edge and on which the first section of the armature retaining spring rests, is formed on at least one holding web.
  • the armature retaining spring rests with its first section essentially over its entire width.
  • the armature retaining spring is thus only subjected to a pure bending stress in the kink between the first and the second spring section, with which it can withstand a high number of switching cycles without the risk of breakage.
  • the anchor retaining spring rests on the crossbar essentially over its entire width.
  • the attachment can be carried out by welding to the holding webs on the side of the crossbar.
  • the anchor retaining spring is welded directly onto the crossbar with one or two welding spots or is also fastened to the crossbar by a comparable method.
  • the yoke has integrally formed retaining webs in the extension of the two side edges, which are connected to one another via the transverse web, so that they enclose the armature retaining spring and, if appropriate, the armature in a frame shape with the transverse web and the opposite bearing edge.
  • the anchor is threaded with the retaining spring attached to it and bent to the outside through the frame-shaped slot between the retaining webs and the crossbar from below, and then the bent end of the anchor retaining spring is welded onto the crossbar from above.
  • a holding pin is provided only on one side, with which the crossbar forms a slot open on one side together with the bearing edge.
  • the assembly is simplified, since the armature with the armature retaining spring can be easily inserted into this slot from the side and then fastened.
  • the crossbar could be formed in a T-shape on both sides from the end of the retaining web, while the anchor retaining spring and the anchor in the central region would have to be excluded.
  • the relay shown in FIGS. 1 to 3 shows a coil body 1 as a carrier or base body, which carries a coil winding 2 and has a first and a second coil flange 3 or 4 for delimiting the winding space. Both coil flanges 3 and 4 have lugs 5 and 6 on the underside, which together define the installation level of the relay as a base.
  • the winding axis runs parallel to the installation plane of the relay, and a core 7 is arranged coaxially to the winding axis in the coil former, which has a widened pole piece 7a in the area of the first coil flange and is connected to an angular yoke 8 in the area of the second coil flange 4.
  • the first leg 8a of the yoke extends perpendicular to the installation plane in the region of the second coil flange 4 and is rib-shaped on both sides Lugs 4a of this coil flange are framed. At the bottom, the first yoke leg 8a merges into an integrally formed connecting pin 9, which serves as a power supply via the yoke for a movable contact spring 10.
  • the second yoke leg 8b is parallel to the installation level of the relay above the coil. At its free end, it forms a bearing edge 8c for a flat armature 11, which forms a working air gap 12 with the core pole piece 7a.
  • the armature is fastened via an armature holding spring or contact spring 10 formed from sheet material, the first section 10a of which is fastened to holding pins 13 and 14 in the extension of the yoke leg 8b, the second spring leg 10b rests on the armature 11 and is connected to it, and the third Spring section 10c, as the actual contact spring, projects beyond the free armature end into a contact chamber 15, which is formed by a pocket-shaped extension 16 of the bobbin flange 3.
  • four mutually opposite insertion slots 17 are provided for receiving counter-contact elements 18.
  • the counter-contact elements 18 are each provided in the usual way with contact pieces 19 which cooperate with corresponding contact pieces 20 of the contact spring 10.
  • the contact spring can serve as a center contact spring or as a contact bridge without its own connection; in the latter case, the connecting pin 9 of the yoke 8 is not required.
  • the first section 10a of the armature retaining spring or contact spring 10 is angled outward in the area of the yoke surface away from the armature surface into the plane of the yoke surface and forms two lateral tabs 10d and 10e which rest on the retaining pins 13 and 14 and are fastened to them.
  • the two retaining pins 13 and 14 are designed as extensions of the yoke leg 8b in its plane, between the yoke leg 8b and the two retaining pins 13 and 14 each have a notch 21 to form a predetermined bending point.
  • the armature 11 is narrower than the yoke leg 8b, so that the two holding pins 13 and 14 can reach past the armature on both sides.
  • the anchor could also have the width of the yoke leg 8b; in this case it would have to be excluded in the area of the holding pins 13 and 14.
  • the side parts of the anchor lying under the holding pins could serve as shock protection (see FIG. 4).
  • the armature retaining spring 10 is provided on both sides with stop tabs 10f and 10g which abut the retaining pins 13 and 14 in the event of an impact movement of the armature in the vertical direction.
  • the restoring force for the armature can be adjusted by bending the holding pins 13 and 14. Since the two holding pins are in front of the bearing edge 8c and in front of the armature, that is to say outside the iron flow circuit, there is no loss of magnetic flux due to the design of the holding pins.
  • the yoke width is fully used for the magnetic circuit.
  • the relay is finally provided with a protective cap 22, which encloses the entire relay with the exception of the installation side and is held on the bobbin 1 by means of locking lugs 23.
  • a circumferential rib 25 lies both above the coil flange 3 on the yoke leg 8b and also forms sealing areas overlapping in the side areas with the coil body flange 3 .
  • the holding pins 13 and 14, with the armature holding spring section 10a attached to them lie on the end in front of the free yoke end, the rib 25 can form a flat capillary gap 26 with the yoke leg 8b approximately above the coil former flange 3. Additional capillary gaps 27 are formed between the rib 25 and the inside of the bobbin flange 3.
  • the relay is cast with the connection side facing upwards, the coil space being filled with casting compound which envelops the winding and the yoke and also penetrates into the capillary gaps 26 and 27, but does not run any further into the switching space 24 or the contact chamber 15 .
  • the potting compound is filled up to the edge 22a of the protective cap 22, it also runs over the extension 16 in the region of the connection side and seals the bushings for the mating contact elements 18. At the same time, it runs into the capillary gaps 28 which are formed between the protective cap 22 and the side walls 16a and 16b of the extension 16.
  • the casting resin is distributed in these large capillary gaps, but does not penetrate into the contact space or the switching space, so that it is sealed liquid-tight both from the outside world and from the coil winding.
  • the yoke leg 8b has the same retaining pins 13 and 14 as the example from FIG. 1.
  • an anchor retaining spring 30 is provided which, in contrast to FIG. 1, has an S-shaped upper portion 30a of the anchor is bent outwards and then inwards into the plane of the yoke leg surface. With laterally formed tabs 30d and 30e, the retaining spring is attached to the retaining pin 13 and 14 in the same way as the spring of FIG. 1.
  • the armature 31 has laterally below the holding pins 13 and 14 shoulders 31a and 31b which abut the holding pins 13 and 14 in the event of impacts in the vertical direction and thereby secure the armature.
  • the yoke leg 8b only has a central retaining pin 43, while the armature 41 rests on both sides of this retaining pin 43 on the bearing edge 8c.
  • the armature retaining spring 40 is initially S-shaped on both sides away from the armature and then towards the armature in the plane of the yoke leg surface, wherein it rests on the retaining pin 43 with a crossbar 40b and is fastened to it.
  • the armature restoring force can be adjusted by bending the holding pin 43.
  • the yoke leg 8b only has a central holding pin 43, while the holding spring 50 is bent with its upper region 50a away from the anchor directly into the plane of the yoke leg surface and rests on the holding pin 43 with its transverse web 50b.
  • FIG. 7 shows a further modification, in which two lateral retaining pins 63 and 64 are formed as extensions of the yoke leg 8b and the armature retaining spring 60 at its upper section 60a via lateral lap wear pen 60b and 60c.
  • the retaining pins could also be bent or cranked in another way, for example standing vertically upwards.
  • FIG. 8 shows, as a section of a relay, a yoke 78 with a first leg 78a and a second leg 78b lying flat over a coil (not shown).
  • This yoke leg 78b forms a bearing edge 78c, on which a flat armature 71 is mounted and fastened by means of an armature retaining spring 70.
  • This armature retaining spring 70 has a first section 70a for attachment to the yoke, a central section 70b to which it is connected to the armature 71, and a section 70c serving as a contact spring.
  • the yoke To hold the armature and the armature retaining spring, the yoke has two retaining webs 73 and 74 which are formed laterally in the extension of the yoke side edges and which are connected at the end to a transverse web 75.
  • a frame-shaped slot 72 is thus formed between the bearing edge 78c, the holding webs 73 and 74 and the transverse web 75, in which the armature 71 with the armature holding spring 70 lies.
  • the holding spring 70 lies with its section 70a over the entire width on the crosspiece 75, so that it is only subjected to bending during the armature movement. It is attached to the crossbar 75 via two welding spots 76.
  • Fig. 9 shows a modified embodiment, the yoke 88 is shown lying. This is only intended to show that the design of the armature holder according to the invention can also be used with a magnet system located in a housing.
  • the yoke 88 with its first leg 88a and its second leg 88b has a bearing edge 88c for an armature 81 which is not visible any further, and a holding web 83 which is formed on one side (on its underside) as an extension and has a transverse web 85 running parallel to the bearing edge ver with its first section 80a on the crosspiece 85 welds, connected to the armature 81 with its central section 80b and equipped with a contact piece as a contact spring with its end section 80c.
  • the holding web 83 forms with the cross bar 85 and the bearing edge 88c a laterally or upwardly open slot 82, in which the armature 81 with the holding spring 80 can be inserted in a simple manner. If the magnet system is arranged horizontally in the manner shown, the armature and armature retaining spring can be inserted into the slot 82 from above.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
EP86110873A 1985-08-09 1986-08-06 Relais électromagnétique Expired - Lifetime EP0214469B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110873T ATE58800T1 (de) 1985-08-09 1986-08-06 Elektromagnetisches relais.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19853528715 DE3528715A1 (de) 1985-08-09 1985-08-09 Elektromagnetisches relais
DE3528715 1985-08-09
DE3543092 1985-12-05
DE19853543092 DE3543092A1 (de) 1985-12-05 1985-12-05 Elektromagnetisches relais

Publications (2)

Publication Number Publication Date
EP0214469A1 true EP0214469A1 (fr) 1987-03-18
EP0214469B1 EP0214469B1 (fr) 1990-11-28

Family

ID=25834917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110873A Expired - Lifetime EP0214469B1 (fr) 1985-08-09 1986-08-06 Relais électromagnétique

Country Status (3)

Country Link
US (1) US4684910A (fr)
EP (1) EP0214469B1 (fr)
DE (1) DE3675852D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0484592A2 (fr) * 1990-11-09 1992-05-13 Siemens Aktiengesellschaft Relais électromagnetique avec lame de contact mis sur l'armature
EP0697706A3 (fr) * 1994-08-19 1998-02-25 Siemens Aktiengesellschaft Structure d'attache d'armature pour un relais électromagnétique

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740771A (en) * 1986-08-26 1988-04-26 Matsushita Electric Works, Ltd. Armature biasing means in an electromagnetic relay
DE3882049D1 (de) * 1988-12-23 1993-07-29 Siemens Ag Elektromagnetisches relais.
US5173675A (en) * 1991-12-31 1992-12-22 United Technologies Automotive, Inc. Mounting for an electromagnetic relay armature
US5497860A (en) * 1994-08-15 1996-03-12 Venturedyne Limited Electromagnetic brake with improved magnet structure
JP2002100275A (ja) * 2000-07-18 2002-04-05 Nagano Fujitsu Component Kk 電磁継電器
ES2240617T3 (es) * 2001-08-10 2005-10-16 Tyco Electronics Amp Gmbh Rele conmutador con resorte de armadura mejorado.
CN103337415A (zh) * 2013-06-14 2013-10-02 东莞市三友联众电器有限公司 一种继电器接触系统
DE102015201703A1 (de) * 2015-01-30 2016-08-04 Te Connectivity Germany Gmbh Geräuscharm schaltende elektrische Schaltvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1512569A (fr) * 1966-12-29 1968-02-09 Relais perfectionné
FR2094246A5 (fr) * 1970-06-15 1972-02-04 Cibie Projecteurs
DE2231525B1 (de) * 1972-06-28 1973-12-06 Swf-Spezialfabrik Fuer Autozubehoer Gustav Rau Gmbh, 7120 Bietigheim Kleinrelais, insbesondere für Leiterplatten in gedruckter Schaltung
DE3232679A1 (de) * 1981-09-04 1983-03-17 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches schaltrelais fuer hohe strombelastung
FR2541815A1 (fr) * 1983-02-28 1984-08-31 Matsushita Electric Works Ltd Relais electromagnetique a armature articulee

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2558065C3 (de) * 1975-12-22 1981-01-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Ankerlagerung für ein elektromagnetisches Relais
DE2943440C2 (de) * 1979-10-26 1984-09-06 Nixdorf Computer Ag, 4790 Paderborn Klappankermagnet
DE8235283U1 (de) * 1982-12-15 1983-06-09 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Relais
DE3308821C2 (de) * 1983-03-12 1985-03-07 Standard Elektrik Lorenz Ag, 7000 Stuttgart Elektromagnetisches Relais

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1512569A (fr) * 1966-12-29 1968-02-09 Relais perfectionné
FR2094246A5 (fr) * 1970-06-15 1972-02-04 Cibie Projecteurs
DE2231525B1 (de) * 1972-06-28 1973-12-06 Swf-Spezialfabrik Fuer Autozubehoer Gustav Rau Gmbh, 7120 Bietigheim Kleinrelais, insbesondere für Leiterplatten in gedruckter Schaltung
DE3232679A1 (de) * 1981-09-04 1983-03-17 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches schaltrelais fuer hohe strombelastung
FR2541815A1 (fr) * 1983-02-28 1984-08-31 Matsushita Electric Works Ltd Relais electromagnetique a armature articulee

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0484592A2 (fr) * 1990-11-09 1992-05-13 Siemens Aktiengesellschaft Relais électromagnetique avec lame de contact mis sur l'armature
EP0484592A3 (en) * 1990-11-09 1993-02-24 Siemens Aktiengesellschaft Electromagnetic relay with contact spring mounted on armature
EP0697706A3 (fr) * 1994-08-19 1998-02-25 Siemens Aktiengesellschaft Structure d'attache d'armature pour un relais électromagnétique

Also Published As

Publication number Publication date
EP0214469B1 (fr) 1990-11-28
DE3675852D1 (de) 1991-01-10
US4684910A (en) 1987-08-04

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