EP0423834A2 - Elektromagnetisches Relais - Google Patents

Elektromagnetisches Relais Download PDF

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Publication number
EP0423834A2
EP0423834A2 EP90120252A EP90120252A EP0423834A2 EP 0423834 A2 EP0423834 A2 EP 0423834A2 EP 90120252 A EP90120252 A EP 90120252A EP 90120252 A EP90120252 A EP 90120252A EP 0423834 A2 EP0423834 A2 EP 0423834A2
Authority
EP
European Patent Office
Prior art keywords
movable contact
base
piece
movable
contact piece
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Withdrawn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
EP90120252A
Other languages
English (en)
French (fr)
Other versions
EP0423834A3 (en
Inventor
Yoichi Omron Corporation Nakanishi
Ryuichi Omron Corporation Sato
Hiroyuki Omron Corporation Sagawa
Kazumi Omron Corporation Sako
Masayuki Omron Corporation Noda
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.)
Omron Corp
Original Assignee
Omron Corp
Omron Tateisi Electronics Co
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 JP27460289A external-priority patent/JPH03134930A/ja
Priority claimed from JP27460189A external-priority patent/JP2861126B2/ja
Priority claimed from JP1295975A external-priority patent/JP2893602B2/ja
Priority claimed from JP13355689U external-priority patent/JPH0371532U/ja
Priority claimed from JP13514289U external-priority patent/JPH0374448U/ja
Priority claimed from JP13574189U external-priority patent/JPH0374449U/ja
Application filed by Omron Corp, Omron Tateisi Electronics Co filed Critical Omron Corp
Publication of EP0423834A2 publication Critical patent/EP0423834A2/de
Publication of EP0423834A3 publication Critical patent/EP0423834A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature
    • H01H51/229—Blade-spring contacts alongside armature

Definitions

  • the present invention generally relates to an electromagnetic relay and, more particularly to the support­ing structure of a movable contact piece of the electromag­netic relay.
  • a conventional electromagnetic relay has been formed in such structure as illustrated, for example, in Figs. 23-25, wherein an iron core 1 provided with a perma­nent magnet 2 at the central part thereof to be generally in an E-shaped cross section is wound with a coil 3, thereby constituting an electromagnet block 4.
  • the electromagnet block 4 is fixedly placed above a base (not shown), so that a protrusion 5a of a movable iron piece 5 is rotatably attracted to the lower surface of the permanent magnet 2.
  • a movable contact piece 7 is integrally united with the central part at the lower surface of the movable iron piece 5 via an insulation bed 6. However, a predetermined gap is maintained between the iron piece 5 and movable contact piece 7.
  • the movable contact piece 7 has movable contact points 7a, 7a at the lower surface of the opposite ends thereof.
  • the movable contact points 7a, 7a confront to fixed contact points 8, 8 in a manner to be easily brought in or out of touch with the latter.
  • a hinge spring (not shown) extended sideways from the lateral side of the movable contact piece 7 is connected to a common terminal protruding from the upper surface of the base. Accordingly, the movable contact piece 7 is elastically supported, so that the movable contact piece 7 is rotatable around a point P2.
  • a contact point P1 between the lower surface of the permanent magnet 2 and the movable iron piece 5 is spaced a gap from the rotary point P2 of the movable contact piece 7, as mentioned earlier and indicated in Fig. 23.
  • This gap not only interrupts smooth operation of the relay, but applies an excessive shearing stress to the hinge spring, resulting in easy fatigue and short lifetime of the relay.
  • An essential object of the present invention is to provide an electromagnetic relay having smooth and diffi­cult-to-change operating characteristic, long service life in a simple structure, without generating abrasion dusts.
  • a further object of the present invention is to provide an electromagnetic relay with high yield which enables the operating characteristic to be adjusted while the components are left as incorporated in the relay.
  • a still object of the present invention is to provide an electromagnetic relay with high yield which requires no particular assembling accuracy of components, but allows easy adjustment after assembling.
  • a yet further object of the present invention is to provide an electromagnetic relay without variations in the contacting strength of a hinge spring and operating characteristic, having high productivity.
  • a still further object of the present invention is to provide an electromagnetic relay which realizes high productivity, high assembling accuracy and high yield.
  • a yet object of the present invention is to provide an electromagnetic relay which allows a base to be easily fixed to an electromagnet block, thereby achieving a thin and compact-size structure.
  • a movable iron piece is rotatably supported at the central part on one surface thereof by an electromagnet block on a base, while the central part on the other surface of the iron piece is, with a predetermined gap maintained, integrally united with the central part of a movable contact piece via an insulation bed.
  • a part of a hinge spring extended from the central part of the lateral side of the movable contact piece is welded to a receiver part of a common terminal protruding from the upper surface of the base, so that the hinge spring is elastically sup­ported.
  • the movable contact piece is rotated by the movable iron piece which is driven as the electromag­net block is excited and demagnetized, thereby closing or opening contact points.
  • the electromagnetic relay of the present invention in the above-described structure is characterized in that the rotary center of the movable iron piece is rendered generally on the same plane as that of the movable contact piece, removing a gap in an up-and-down direction observed in the conventional example. According­ly, not only the smooth operating characteristic can be gained, but the hinge spring is prevented from being loaded with an excessive shearing stress although it is elastically supported. Thus, the lifetime of the hinge spring can be elongated.
  • the movable contact piece is not displaced in an elongated direction, a pigtail or the like is not necessitated, so that the relay can be formed in a simple structure.
  • the movable iron piece is not shifted in an elongated direction, and accordingly the movable iron piece never comes to scrub the permanent magnet, hardly generating abrasion dust. As a result of this, poor connection becomes hard to take place, and the operating characteristic of the relay is not easy to change.
  • a fixed contact point of a terminal provided in the base is opposed in a connectable manner to a movable contact point of the movable contact piece rotatably supported above the base.
  • the movable contact piece is rotated consequent to the rotation of the movable iron piece as the electromagnet block is excited or demagnetized, thereby closing/opening contact points.
  • an end of the terminal where the fixed contact point is formed is projected side­ways in an adjustable manner from the lateral face of the base. Accordingly, even if the inner components are kept installed on the upper surface of the base, the end part can be adjusted by an adjusting tool which can be easily insert­ ed.
  • the end part is projected, burrs and flashes generated when the base is molded are hardly adhered to the periphery of the fixed contact point, thereby making it easy to circulate a cleaning liquid.
  • the fixed contact point can be cleaned with improved efficiency.
  • the fixed contact point can be post-mounted to the end part, and therefore prevented from being broken when the terminal is insertion-molded in the base.
  • the movable iron piece when the electromagnet block wherein a permanent magnet is arranged at the center of a generally U-shaped iron core is excited, the movable iron piece is turned like a seesaw, and simultaneously the movable contact piece integrally formed with the movable iron piece is driven, thereby to close/open the contact points.
  • the hinge spring extended sideways from the central part of the movable contact piece is projected from the upper surface of the base and bent outwards, to be rigidly welded to the receiver part of the common terminal. Since the receiver part can be adjusted from the lateral side, the hinge spring can be bent by, e.g., twisting the receiver part after assembling, so that the load on the movable contact piece can be adjusted.
  • the welding part at the end of the hinge spring is welded to the terminal projecting from the upper surface of the base, whereby the movable contact piece is rotatably supported.
  • a positioning arm extending from the welding part of the movable contact piece is fitted into a recessed part formed on the upper surface of the base. Accordingly, only by fitting the arm of the movable contact piece into the recessed part, the movable contact piece can be positioned at a position different from the welding part.
  • the insulation bed having the movable contact piece insertion-molded and the movable iron piece are formed into one unit in an up-and-down direction.
  • the block is driven by the movable iron piece which is rotated in accordance with the excitation and demagnetization of the electromagnet block, so that the movable contact point in the movable contact piece is brought into or out of contact with the fixed contact point.
  • the insulation bed of the block is integrally formed with the movable iron piece through a secondary insertion molding with the help of a synthetic resin, accordingly without requiring caulking operation or injecting/hardening opera­ tion of an adhesive.
  • the number of operat­ing procedures is reduced, thereby improving the productivi­ty.
  • the movable contact piece block and movable iron piece are correctly positioned by means of a mold during the secondary insertion molding, the movable iron piece is not deviated in position.
  • the relay is rid of varia­tions of the operating characteristic.
  • the movable contact piece block is not necessary to be heated to harden the adhesive, and therefore the contact point is avoided from being exposed to high temperatures for a long time. Accordingly, dust, oil etc. is not baked or adhered to the contact point, whereby an inferior connection is not given rise to.
  • the contacting reliability as well as the yield is improved.
  • the electromagnet block is integrally overlapped on the base.
  • a solvent is injected into a gap between the resinous parts where the base and electromagnet block are engaged or in contact with each other, so that the electromagnet block is securely fixed to the base.
  • the solvent such one that can dissolve the resinous parts of the base and electromagnet block is used. While the solvent tightly fixes the resinous parts of the base and electromagnet block, the solvent itself scatters in the air as a gas.
  • the electromagnetic relay of the present invention is substantially comprised of a base 10, a movable contact piece block 20, a movable iron piece 30, an electromagnet block 40, base reinforcing members 50,60, and a casing 70.
  • the base 10 is generally rectangular in a plan view. However, the central part at each short side of the base 10 is notched. Fixed contact terminals 11,12 and a common terminal 13 are mounted in the base 10 through insertion molding. There are four supporting members 14 projecting at four corners of the upper surface of the base 10 which have insertion holes 15,15,16,16 at respective base portions. Each supporting member 14 has an abutment portion 14a which abuts against the lower surface at the corner of a jaw 43b or 43c of the electromagnet block 40, an engagement portion 14b which extends in a perpendicular direction from the abutment portion 14a to be engaged with the side face at the corner of the jaw 43b or 43c, and a chamfered portion 14c formed in the engagement portion 14b.
  • a platform 17 with a positioning longitudinal groove 17a is projected at a position adjacent to the insertion hole 16 for a coil terminal of the base 10. More­over, a receiver 13a for the common terminal 13 is protrudingly welded in the vicinity of the platform 17. An upper end of the receiver 13a is bent outwards, so that the receiver 13a can be adjusted from the lateral side.
  • a fitting recess 18 formed at the center on the upper surface of the base 10 has a vent hole 18a at the center on the bottom surface thereof, and bench portions 18b,18b of a generally semi-circular cross section projecting in the vicinity of the opposite side edges thereof (although the bench portion at the front side is not shown in Fig. 1).
  • terminals 11,12 for the fixed contact points and common terminal 13 which are integrally coupled in one unit by a hatched lead frame 80 and II-shaped coupling members 81,81 as shown in Figs. 5 and 6 are first formed through insertion molding. Then, the terminals 11,12,13 are separated from the lead frame and bent downwards, with the coupling members 81,81 cut off (with reference to Fig. 6), whereby adjusting tongue pieces 11b,12b are formed at front ends of the fixed termi­nals 11,12 equipped with fixed contact points 11a,12a, respectively. These tongue pieces 11b,12b are so projected as to be adjustable from the lateral side of the base 10, with having a small width, so that it is becomes easy to insert an adjusting tool.
  • the base 10 is cut and separated from the lead frame 80 after all the inner components are incorporated in the base and the operating characteristic is checked and adjusted.
  • the front ends of the fixed terminals 11,12 may be protruded from the lateral face of the base.
  • the movable contact piece block 20 represents a line symmetry wherein the central parts of a pair of movable contact pieces 22,23 arranged in parallel are insertion-molded with an insulation bed 21.
  • the insulation bed 21 is made of synthetic resin and is provided with through-holes 24,24 intended for a secondary molding at the central part thereof.
  • the insulation bed 21 is provided with supporting parts 25,25 projecting upwards at the confronting opposite side edges thereof.
  • the movable contact pieces 22,23 are formed of a conductive thin plate through punching. Both ends of each movable contact piece 22 or 23 are divided into two, with movable contact points 22a,23a securely welded to the lower surface at the one end and movable contact points 22b,23b securely welded to the lower surface at the other end. Furthermore, the central part of a long side of each of the movable contact pieces 22,23 is extended sideways, bent upwards, to constitute a standing part 22c or 23c.
  • a hinge spring 26 extending from an upper end of the standing part 22c or 23c is projected generally in parallel to an extending direction of the movable contact piece 22 or 23 from the supporting part 25 of the insulation bed 21. Moreover, a welding part 26a at the front end of the hinge spring 26 is bent' in a direction reverse to the above-­referred projecting direction.
  • a positioning arm 27 is found on an extension line of the welding part 26a.
  • the movable iron piece 30 is made of a generally rectangular plate in a plan view.
  • the central part of the iron piece 30 is processed to have a swelling part 31.
  • the movable iron piece 30 is turned around a fulcrum, namely, a ridge 31a.
  • Through-holes 32,32 are formed for insertion molding, confronting to each other with the swelling part 31 interposed therebetween.
  • a magnet-shield plate 33 is attached to one end of the upper surface of the iron piece 30.
  • the movable iron piece 30 is, as shown in Figs. 13-16, positioned between the supporting parts 25,25 of the movable contact piece block 20, and the through-holes 32,32 of the movable iron piece 30 are overlapped to be aligned with the through-holes 24,24 of the insulation bed 21, thereby to communicate the through-holes 32,32 with 24,24. After this, a secondary insertion-molding is conducted to form a coupling body 34 in an U-shaped cross section. Thus, the movable contact piece block 20 is united with the movable iron piece 30.
  • a synthetic resin is injected and solidified in a recessed portion 21a (referring to Fig. 14) formed at the lower surface of the insulation bed 21, whereby the movable contact piece block 20 can be restricted small in height and is difficult to rattle.
  • the coupling body 34 is formed in continuation to the insulation bed 21, it can avoid a waste of time, thereby improving the productivity. Particu­larly, if the movable contact pieces 22,23 are insertion-­molded when they remain hoops, the productivity is further more improved.
  • the through-holes for the secondary insertion molding may be single.
  • the insulation bed 21 of the block 20 is fitted in the fitting recess 18 of the base 10.
  • the positioning arm 27 of the hinge spring 26 is slided and fitted into the positioning longitudinal groove 17a of the base 10.
  • the welding part 26a of the hinge spring 26 is welded to the receiver 13a of the common terminal 13, so that the welding part 26a is arranged generally even with the ridge 31a of the movable iron piece 30.
  • the iron core 41 generally in an U-shaped cross section is changed to be E-shape since it is provided with a permanent magnet 42 at the central part thereof, as is clear from Figs. 19-21.
  • the electromagnet block 40 is obtained by insertion-molding this iron core 41 with a spool 43.
  • a magnetic electrode portion 42a of the permanent magnet 42 is exposed from the lower surface of the central jaw 43a of the spool 43, while a left magnetic electrode portion 41a of the iron core 41 is exposed from the lower surface of the jaw 43b of the spool 43.
  • the right magnetic electrode portion 41b of the iron core 41 is exposed from the lower surface of the jaw 43c of the spool 43.
  • coil terminals 44,44,45,45 are insertion-molded into the jaws 43b,43c.
  • a leading wire of a coil 46 wound around the spool 43 is tied to a tie-up portion 44a of the coil terminal 44.
  • the coil terminals 44,44,45,45 are inserted into respective coil terminal insertion holes 15,15,16,16, so that, as is understood from Figs. 17 and 22, the side face at the corner of each jaw 43b or 43c is engaged with the engagement portion 14b of the base 10, and the lower face at the corner thereof is brought to butt against the abutment portion 14a of the base 10. Thereafter, a solvent S is injected between the jaws 43b,43c and chamfered portion 14c from a direction shown by an arrow in Fig. 22.
  • the electromagnet block 40 When the electromagnet block 40 is integrally formed with the base 10 in the manner as described hereinabove, the swelling part 31 of the movable iron piece 30 is attracted to the magnetic electrode portion 42a of the block 40, and the movable iron piece 30 is eventually kept in a turnable state.
  • the turning center of the movable iron piece 30 is on the same plane as the turning center of the movable contact pieces 22,23.
  • the operating characteristic of the electromagnet­ic relay is checked at this stage.
  • the tongue pieces 11b,12b of the fixed terminals 11,12 protruding from the side face of the base 10 are twisted by an adjusting tool (not shown) so that straight parts at the opposite sides of the load curve S (referring to Fig. 18) are observed within a predetermined attraction force curve.
  • the receiver 13a of the common terminal 13 projecting from the upper edge of the base 10 should be adjusted in the similar manner. More specifically, if the receiver 13a of the common terminal 13 is twisted in a direction (a) of Fig. 17(?), the load is changed in an (a) direction as indicated by a one-dot chain line in Fig.
  • the semimanufactured electromagnetic relay is separated from the lead frame 80 (referring to Fig. 17).
  • Each of the base reinforcing members 50,60 is in such a shape as is able to be fitted into the edge of the lower surface of the base 10.
  • the base reinforcing members 50,60 have coil terminal holes 51,51 and 61,61 inserted into corresponding coil terminals 44,44 and 45,45 of the electro­magnet block 40 which terminals are projected from the lower surface of the base 10. Further, recessed parts 52,52 and 62,62 of the reinforcing members 50,60 are fitted into positioning protrusions 10a,10a formed at the lower surface of the base 10 (although the positioning protrusions at the rear side are not shown in Fig. 1), respectively.
  • the box-like casing 70 is able to be fitted into the base 10. After the casing 70 is fitted into the base 10, a sealant 90 is injected and solidified into a recessed part 71 (Fig. 3) formed at the rear face of the base 10. The inner gas is extracted through the vent hole 18a. Thereafter, the vent hole 18a is thermally melted and closed. Accordingly, the electromagnetic relay is complete­ly assembled.
  • a right side end 30b of the movable iron piece 30 is attracted to the right magnetic electrode portion 41b of the iron core 41 by a magnetic flux generated by the permanent magnet 42 (shown by a dot line in Fig. 19), whereby the magnetic circuit is closed. Accordingly, the movable contact points 22a,23a of the movable contact pieces 22,23 are in touch with the fixed contact points 11a,11a, whereas the movable contact points 22b,23b are detached from the fixed contact points 12a,12a.
  • the right side end 30b of the movable iron piece 30 is turned away from the right magnetic electrode portion 41b, and then, the left side end 30a of the movable iron piece 30 is brought in touch with the left magnetic electrode portion 41a of the iron core 41 (with reference to Fig. 21).
  • the movable contact points 22a,23a of the movable contact pieces 22,23 are separated from the fixed contact points 11a,11a, and the movable contact points 22b,23b are turned into contact with the fixed contact points 12a,12a.
  • the movable iron piece 30 When the coil 46 is released from the above magnetized state, the movable iron piece 30 is returned to its original position by the restoring force, i.e., the spring force of the movable contact pieces 22,23 and hinge springs 26,26 as well as the imbalance of the magnetic force, etc. Accordingly, the movable contact points 22a,23a and 22b,23b are switched, so that the electromagnetic relay is returned to the original state.
  • the restoring force i.e., the spring force of the movable contact pieces 22,23 and hinge springs 26,26
  • an electromagnetic relay of a self-retention type is possi­ble if the shape of the iron core 41 is changed and the spring force of the movable contact pieces 22,23 is adjust­ed.
  • the structure of the electromagnetic relay is not limited to such as in the present embodiment. It is needless to say that any structure will be applicable so long as the electromagnet block is overlaid with the base or mounted on the base.
  • the integrated body of the contact piece block 20 and movable iron piece 30 may be positioned above the electromagnet block 40.
  • the operating characteristic of the electromagnetic relay can be easily adjusted, for example, by twisting the receiver even after assembling the relay.
  • the operating characteristic of the relay can be automatically adjusted from the lateral side.
  • the electromagnetic relay of the present inven­tion can be manufactured at low cost with good yield.
  • the base of the electromagnetic relay is rigidly secured to the electromagnet block in a simple manner using a solvent, with a few number of abutment portions and engagement portions, whereby the base and electromagnet block can be formed thin and compact in size.
  • the cross sectional area of the coil can be increased without changing the outer size, so that the attracting force is enlarged.
  • the electromagnetic relay of the present invention can be assembled with much ease in a short time as compared with the case where each block or component is fixedly mounted by an adhesive.
  • An outgas is not generated after fixing the base with the electromagnet block, thus causing no erroneous operation of the electromagnetic relay resulting from an inferior connection or the like.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
EP19900120252 1989-10-20 1990-10-22 Electromagnetic relay Withdrawn EP0423834A3 (en)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
JP27460289A JPH03134930A (ja) 1989-10-20 1989-10-20 電磁継電器
JP27460189A JP2861126B2 (ja) 1989-10-20 1989-10-20 電磁継電器
JP274601/89 1989-10-20
JP274602/89 1989-10-20
JP295975/89 1989-11-14
JP1295975A JP2893602B2 (ja) 1989-11-14 1989-11-14 電磁継電器
JP13355689U JPH0371532U (de) 1989-11-16 1989-11-16
JP133556/89U 1989-11-16
JP135142/89U 1989-11-21
JP13514289U JPH0374448U (de) 1989-11-21 1989-11-21
JP135741/89U 1989-11-22
JP13574189U JPH0374449U (de) 1989-11-22 1989-11-22

Publications (2)

Publication Number Publication Date
EP0423834A2 true EP0423834A2 (de) 1991-04-24
EP0423834A3 EP0423834A3 (en) 1991-12-27

Family

ID=27552816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900120252 Withdrawn EP0423834A3 (en) 1989-10-20 1990-10-22 Electromagnetic relay

Country Status (1)

Country Link
EP (1) EP0423834A3 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022156A1 (de) * 1993-03-24 1994-09-29 Siemens Aktiengesellschaft Polarisiertes elektromagnetisches relais
DE19625848A1 (de) * 1995-06-30 1997-01-02 Copal Electronics Elektromagnetisches Relais
WO1997042643A1 (de) * 1996-05-07 1997-11-13 Siemens Aktiengesellschaft Elektromagnetisches relais
DE19635275C1 (de) * 1996-08-30 1998-02-05 Siemens Ag Polarisiertes Relais
DE19705508C1 (de) * 1997-02-13 1998-08-20 Siemens Ag Elektromagnetisches Relais
EP2645399A1 (de) * 2010-11-08 2013-10-02 Panasonic Corporation Elektromagnetisches relais

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1867987U (de) * 1962-10-26 1963-02-28 Haller & Co E Kontaktanordnung in kleinstrelais.
US3624571A (en) * 1969-12-15 1971-11-30 Thermosen Inc Precision method and means for positioning contact points in miniature electrical relays
DE3303665A1 (de) * 1983-02-03 1984-08-09 Siemens AG, 1000 Berlin und 8000 München Polarisiertes elektromagnetisches relais
DE3311308C1 (de) * 1983-03-28 1984-10-25 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung für ein Relais
EP0313385A2 (de) * 1987-10-22 1989-04-26 Nec Corporation Elektromagnetisches Relais

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1867987U (de) * 1962-10-26 1963-02-28 Haller & Co E Kontaktanordnung in kleinstrelais.
US3624571A (en) * 1969-12-15 1971-11-30 Thermosen Inc Precision method and means for positioning contact points in miniature electrical relays
DE3303665A1 (de) * 1983-02-03 1984-08-09 Siemens AG, 1000 Berlin und 8000 München Polarisiertes elektromagnetisches relais
DE3311308C1 (de) * 1983-03-28 1984-10-25 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung für ein Relais
EP0313385A2 (de) * 1987-10-22 1989-04-26 Nec Corporation Elektromagnetisches Relais

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022156A1 (de) * 1993-03-24 1994-09-29 Siemens Aktiengesellschaft Polarisiertes elektromagnetisches relais
US5617066A (en) * 1993-03-24 1997-04-01 Siemens Aktiengesellschaft Polarized electromagnetic relay
DE4408980B4 (de) * 1993-03-24 2004-03-25 Tyco Electronics Logistics Ag Elektromagnetisches Relais
DE19625848A1 (de) * 1995-06-30 1997-01-02 Copal Electronics Elektromagnetisches Relais
WO1997042643A1 (de) * 1996-05-07 1997-11-13 Siemens Aktiengesellschaft Elektromagnetisches relais
DE19635275C1 (de) * 1996-08-30 1998-02-05 Siemens Ag Polarisiertes Relais
WO1998009311A1 (de) * 1996-08-30 1998-03-05 Siemens Aktiengesellschaft Polarisiertes relais
DE19705508C1 (de) * 1997-02-13 1998-08-20 Siemens Ag Elektromagnetisches Relais
EP2645399A1 (de) * 2010-11-08 2013-10-02 Panasonic Corporation Elektromagnetisches relais
EP2645399A4 (de) * 2010-11-08 2014-10-22 Panasonic Corp Elektromagnetisches relais
US9093239B2 (en) 2010-11-08 2015-07-28 Panasonic Intellectual Property Management Co., Ltd. Electromagnetic relay
EP3128530A1 (de) * 2010-11-08 2017-02-08 Panasonic Intellectual Property Management Co., Ltd. Elektromagnetisches relais

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Publication number Publication date
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