EP0118715A1 - Relais électromagnétique polarisé - Google Patents

Relais électromagnétique polarisé Download PDF

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Publication number
EP0118715A1
EP0118715A1 EP84101008A EP84101008A EP0118715A1 EP 0118715 A1 EP0118715 A1 EP 0118715A1 EP 84101008 A EP84101008 A EP 84101008A EP 84101008 A EP84101008 A EP 84101008A EP 0118715 A1 EP0118715 A1 EP 0118715A1
Authority
EP
European Patent Office
Prior art keywords
armature
coil
contact
winding
permanent magnet
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
EP84101008A
Other languages
German (de)
English (en)
Other versions
EP0118715B1 (fr
Inventor
Martin Aidn
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
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0118715A1 publication Critical patent/EP0118715A1/fr
Application granted granted Critical
Publication of EP0118715B1 publication Critical patent/EP0118715B1/fr
Expired 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

Definitions

  • the invention relates to a polarized electromagnetic relay with a coil body, which carries at least one winding and is axially penetrated by a coil core, with a rocker armature arranged at least partially parallel to the coil axis outside the coil, which is pivotably mounted with its central part and with its two Each ends forms a working air gap with one end of the coil core, the armature together with the coil core enclosing the coil winding and a permanent magnet arranged next to the coil winding from one side and actuating the movable contact elements of a contact carrier arrangement connected to the coil body.
  • Such a relay is known for example from DE-OS 30 46 947.
  • the permanent magnet is arranged in parallel next to the coil winding and is also provided with a shunt. With this arrangement, the permanent magnetic circuit is not closed well, which detracts from the sensitivity of the relay; in addition, the arrangement of the permanent magnet requires a relatively large amount of space there.
  • the anchor and the contact carrier arrangement are arranged in the known relay on the upper side of the magnet system and require relatively long characterized GR e g for the contact terminals.
  • the object of the invention is to provide a polarized relay of the type mentioned with high sensitivity, with a simple, space-saving design and as few parts as possible, which is both for monostable is also suitable for bistable execution options.
  • this object is achieved in that the permanent magnet is arranged offset with a pole on the coil core in the axial direction to the coil winding and that the armature is arranged between the coil winding and the permanent magnet on the one hand and a base serving as a contact carrier arrangement and arranged underneath the coil body on the other hand is in direct engagement with the movable contact elements.
  • the arrangement of the permanent magnet directly on the core results in a compact structure of the relay with few individual parts, and also high responsiveness, since the permanent magnetic circuit closes in two branches directly over the armature and the two working air gaps towards the core.
  • the permanent magnetic flux and the excitation flux are directly superimposed in the working air gaps. Since the contact arrangement is arranged in the base below the magnet system, there are short connection paths for the contact elements, which also has a space-saving effect. Due to the direct actuation of the contact elements by the armature, additional actuation slides can be omitted.
  • the rocker arm is expediently mounted on a coil flange near its center of gravity. It is expedient for the armature to be mounted on a cylindrically shaped rib of the coil flange by means of an embossed cylindrical recess.
  • the actuation of the movable contact springs by the armature can take place, for example, in that the armature is cranked at both ends and with the there rests directly on the contact springs due to the formed shoulders.
  • the armature is expediently covered with an insulating film on the sections facing the movable contact elements.
  • the contact springs themselves with an insulating coating.
  • the coil body expediently has projections in flange regions next to the armature, which protrude from the bearing surfaces of the base. The coil body can be attached to the base by means of pin connections.
  • the contact connection elements are expediently embedded in the base itself by extrusion coating, in such a way that the contact surfaces of the mating contact elements and contact surfaces for the fastening of movable contact springs are flush with the surface of the contact carrier.
  • the movable contact springs can be fastened to the contact surfaces of their connecting elements by welding or the like.
  • the movable contact elements are mounted on the respective contact surface by means of an embossed bearing point and are held against the armature by their prestressing.
  • the movable contact elements are attached to the armature itself via an insulating piece and are electrically connected to their associated connection elements on the base via a conductive film.
  • the magnet system can be varied in many ways by arranging one or more windings and one or more permanent magnets differently.
  • the simplest arrangement consists of a single winding and a single permanent magnet arranged next to it, a coil flange provided between the two lying approximately in the middle of the axial length of the core and for storage serves the anchor.
  • Such a relay has a monostable characteristic, since the armature on one side of the bearing is attracted directly by the permanent magnet and will therefore always lie on the permanent magnet side when the excitation is switched off.
  • the permanent magnet can also be provided in the middle between two windings, a bearing point for the armature being formed either directly by the permanent magnet or by a bearing piece which closes off the magnet chamber.
  • the anchor itself is cranked with both ends toward the straight core.
  • the armature could also be designed in a straight line and interact with a core that is cranked at the ends.
  • Another embodiment is also conceivable, in which both the armature and the core are cranked at the ends. In this case, identical parts could be used for the armature and for the core. The same advantage is obtained if the armature and core are each cranked at one end and are arranged rotated relative to one another such that a cranked end interacts with a straight end of the armature or the core.
  • the relay shown in FIG. 1 has a rectilinear core 2 in a coil former 1, which core 2 forms two working air gaps 4 and 5 with an armature 3.
  • the bobbin carries an excitation winding 8 between the flanges 6 and 7 and forms a chamber 9 for a permanent magnet 10 next to the flange 7, said magnet being seated directly on the core 2 with one pole.
  • a getter 11 is provided in a further chamber of the coil body, which getter can be introduced, for example, in a viscous state and then dried, or is used immediately in the form of a tablet.
  • the armature 3 is below the coil body with his Middle part arranged approximately parallel to the coil axis and pivotally mounted about a horizontal axis running transversely to the coil longitudinal direction.
  • the bearing 12 is geometrically designed as a cylinder sliding bearing, which, in contrast to cutting bearings, only results in a low specific surface pressure, but instead a larger friction path occurs. However, since the swivel angle of the armature is small, the friction path in the bearing is also small.
  • the cylindrical recess 3 in the armature is embossed with great smoothness, and a cylindrical rib with the smoothest possible surface is also formed on the coil flange 7. The material combination of the metallic armature with the plastic of the coil body results in a low-wear bearing.
  • projections 13 of the bearing flange 7 protrude into lateral recesses in the armature.
  • a rib 15 is formed on the base 14, which limits lifting of the armature from the bearing.
  • the armature 3 encompasses both the coil winding 8 and the permanent magnet 10 in an approximately U-shape from below and is cranked with its free ends 3a and 3b parallel to the core 2 to form the working air gaps 4 and 5.
  • the flow of the permanent magnet 10 branches in the core 2 to the two working air gaps and from there via the armature and the air gap 16 back to the permanent magnet.
  • the relay is sensitive to the current direction.
  • the asymmetrical arrangement of the permanent magnet gives the magnet system a monostable characteristic.
  • the contact system is arranged directly under the anchor, the base 14 serving as a carrier.
  • the base 14 serving as a carrier.
  • the movable contact springs 20 are welded onto the bearing surface 19a and biased upwards towards the armature, so that they are actuated directly by the shoulders 3c and 3d of the armature.
  • the armature is covered with an insulating film 21 in this area.
  • the magnet system with the coil former 1 as a carrier and the contact arrangement with the base 14 as a carrier are plugged together via a pin connection 22.
  • projections 23 of the coil body come to rest on contact surfaces 24 of the base and thereby result in the correct assignment between the armature and the contact arrangement.
  • a protective cap 25 forms a circumferential groove 26 with the base edge (see also FIG. 5). By pouring this groove 26 with casting resin, the housing gap between the base and protective cap is sealed. At the same time, the contact connections 17, 18, 19 and the coil connections 27 are additionally sealed.
  • the counter-contact elements 17 and 18 and the connection elements 19 for the contact springs are obtained from a circuit board 28 which is cut out according to FIG. 2 and bent into a U-shape.
  • On the opposite contact elements 17 and 18 are already welded contact pieces 29; then the board strip is overmolded with plastic.
  • the connections to which the connecting strips are isolated from the contact pieces to the connection lugs are located in the interior of the base.
  • the terminal lugs are cut free and the contact springs 20 are welded onto the surfaces 19a.
  • the contact springs 20 are pre-bent in order to obtain a desired bias against the armature. This preload of the contact springs and the permanent magnetic attraction forces keep the armature in its bearing after the relay has been assembled, so that a separate bearing spring is not required.
  • Fig. 4 shows the finished base 14 seen from above.
  • the two contact springs 20 are welded on and lie with their contacting ends above the mating contact elements 17 and 18, respectively.
  • the base 14 has holes 21a for receiving the fastening pins 21 of the coil body.
  • the coil pins 27 are also embedded.
  • Fig. 5 shows a cross section through the finished relay.
  • Fig. 6 shows a modification of the Re relay with self-pressure contacts used.
  • the contact pressure arises from the pretensioning of the contact springs 35 with respect to the counter-contact elements 36 and 37, which emerge from the base 34 and overlap the contact spring 35.
  • the bias of the flat contact spring 35 against the counter-contact elements 36 and 37 is achieved in that the base in the central region 34a, in which the contact spring 35 rests, is higher than in the lateral regions 34b and 34c, where the counter-contact elements 36 and 37 are arranged.
  • the contact spring 35 therefore bears against the counter-contact elements 36 and 37 in the relaxed state even without a pretension bend.
  • the armature 33 is in this case bent downward at its shoulder regions 33a and 33b. Otherwise, the relay according to FIG. 6 is constructed in principle in exactly the same way as the relay according to FIG. 1.
  • FIG. 7 shows a further modification of the relay, whereby, in contrast to the embodiment of FIG. 1, a changeover contact is not achieved with two mating contact elements arranged at opposite ends of the relay, but with two mating contact elements lying one above the other.
  • the movable contact spring 38 is fastened on one side of the base 39 to its connecting element 40 and can be switched with its free end between two mating contact elements 41 and 42.
  • a bead 43 stamped into the contact spring 38 serves as the point of attack for the armature.
  • a particularly long free spring length is obtained for the contact spring 38.
  • the embodiment according to FIG. 8 shows an external pressure contact arrangement with loosely inserted contact springs.
  • the base 44 with the counter-contact elements 45 and 46 and the connecting element 47 for the contact spring 48 formed similar to the base 14 of FIG. 1.
  • the contact spring 48 is not fastened to the connecting element 47 by welding, but is supported by a bead 49 in a flat recess 50 of the connecting element 47.
  • the spring is held in a form-fitting manner in the roller bearing formed by the recess 50.
  • the parts in the storage area can be covered with precious metal.
  • a corresponding design with loosely inserted contact springs is of course also possible with self-pressure contacts.
  • the contact springs 51 are fastened to the armature 53 via an insulating piece 52.
  • the base 54 carries mating contact elements 55 and 56 and a connection element 57 for the contact spring 51.
  • the electrical connection between the connection elements 57 and the contact spring 51 is made by a flexible copper foil 58.
  • a smooth insulating film 59 is also clamped between the armature 53 and the insulating piece 52 and isolates the armature from the contact spring 51 when actuated.
  • FIG. 10 shows modifications of the magnet system of FIG. 1, each in a schematic representation.
  • FIG. 10 shows an embodiment with a coil former 61 which is modified compared to FIG. 1 and which obtains a larger winding space in that the permanent magnet 62 is made smaller.
  • the winding space is divided into two parts 65 and 66. Places for a getter 11 are also indicated by dashed lines. Due to the greater distance of the permanent magnet 62 from the armature pivot point, the embodiment according to FIG. 10 is more monostable than that according to FIG. 1.
  • FIG. 11 shows a bobbin 67 with two winding spaces 68 and 69, the permanent magnet 70 being arranged between the two winding spaces.
  • the permanent magnet 70 is close to the armature pivot point, so that this relay is only slightly asymmetrical and more bistable.
  • the coil body 71 has an enlarged winding space, the armature being mounted off-center on the coil flange 72. This causes strokes of different sizes in the working air gaps 4 and 5.
  • Such an embodiment may be useful for a particular contact arrangement where e.g. one contact needs a larger contact opening than the other.
  • 12 also shows the fastening of a getter tablet 74 by means of a resilient holder 75 which is molded onto the coil body 71. Such attachment is of course also possible in all other embodiments of the relay.
  • FIG. 13 shows a magnet system in which the base body 76 in turn has an enlarged winding space.
  • the coil is bridged by a bearing plate 77 made of metal or plastic. If the bearing plate is made of soft magnetic material and, as shown in dashed lines, is guided over the permanent magnet 79 with an extension 78, it additionally serves as a flux guide for the continuous flow.
  • a bearing plate 77 is shown in FIG. 14.
  • the lateral projections 80 serve to guide the armature.
  • FIG. 15 shows an embodiment of a bobbin 81, in which a bearing bridge 82 is integrally formed on a film hinge 83. After winding the coil, it can be engaged with a hook 84 on the coil body flange 85.
  • a carrier 87 is fastened on the permanent magnet 86 and forms a cutting edge bearing 88 for the armature 89. If this carrier 87 is made of soft magnetic material, it also serves as a flux guide for the permanent magnetic flux.
  • the armature stroke can be adjusted by bending the carrier 87.
  • a bearing bracket 90 is let into a coil flange 91.
  • FIG. 18 A similar embodiment is shown in FIG. 18, where a bearing bracket 92 is inserted into a coil flange 93 and rests on the other coil flange 94.
  • a bearing plate 95 consisting of metal or plastic, is pressed into a coil flange 96.
  • a stroke adjustment of the armature is possible by moving the bearing plate 95 in the coil flange.
  • 20 shows a bistable magnet system embodiment in which the armature 97 is mounted on the cutting edge directly on the permanent magnet 98.
  • the armature stroke can be adjusted by inserting plate 99 between permanent magnet 98 and core 100.
  • 21 shows a similar embodiment, wherein only the armature 97 is not mounted directly on the magnet 101, but on a separate bearing plate 102 covering the magnet.
  • This bearing plate 102 can also be made of metal or plastic. If it is to be made of insulating material, it can also be made in one piece with the coil former 103. In this case, the permanent magnet 101 can be inserted laterally.
  • FIG. 22 shows a symmetrical structure of a coil former 104 with two permanent magnets 105 and 106. If one permanent magnet is weakened compared to the other, the magnet system is monostable; if both magnets are magnetized to the same degree, the system is bistable. On separate magnetic adjustment and adjustment of the relay characteristics are possible in this way.
  • FIG. 23 shows a magnet system with a straight armature 107 and a core 108 bent at the ends.
  • the coil body 109 or the core 108 must be formed in two parts in order to enable assembly, or the core must be embedded immediately when the coil body is sprayed .
  • both the core 110 and the armature 111 are cranked at the ends. Identical parts can be used for the core and for the anchor.
  • FIG. 25 shows an embodiment with a cranked core 112 which, in conjunction with an armature 3 according to FIG. 1, enables a particularly large volume for the permanent magnet 113.
  • the most efficient solution for the magnet system is shown in FIG. 26.
  • the armature 114 is identical to the core 115, namely cranked at one end. In this case, the core can be subsequently pressed into the coil body as in FIG. 1.
  • FIG. 27 finally shows a spring-loaded armature 116, in which a bearing spring 117 is welded on at position 118.
  • the bearing spring 117 is snapped into a recess 119 in the coil flange 120 with its hook-shaped end 117a.
  • the permanent magnet 10 is inserted from the side.
  • the anchor is supported on the rounded bearing flange 121 and is tied on all sides.
  • the lateral projections 13 of the bearing flange serve as shock protection.
  • the bearing spring directs the armature and supports the monostability of the magnet system. Otherwise, the Re 27 constructed in exactly the same way as the relay according to FIG. 1.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
EP84101008A 1983-02-03 1984-02-01 Relais électromagnétique polarisé Expired EP0118715B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833303665 DE3303665A1 (de) 1983-02-03 1983-02-03 Polarisiertes elektromagnetisches relais
DE3303665 1983-02-03

Publications (2)

Publication Number Publication Date
EP0118715A1 true EP0118715A1 (fr) 1984-09-19
EP0118715B1 EP0118715B1 (fr) 1987-05-13

Family

ID=6189961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101008A Expired EP0118715B1 (fr) 1983-02-03 1984-02-01 Relais électromagnétique polarisé

Country Status (4)

Country Link
US (1) US4551698A (fr)
EP (1) EP0118715B1 (fr)
JP (1) JPS59143235A (fr)
DE (2) DE3303665A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282099A2 (fr) * 1987-03-13 1988-09-14 Omron Tateisi Electronics Co. Relais électromagnétique
EP0293199A2 (fr) * 1987-05-29 1988-11-30 Nec Corporation Relais électromagnétique
EP0355817A2 (fr) * 1988-08-25 1990-02-28 Omron Tateisi Electronics Co. Relais électromagnétique
US4993787A (en) * 1987-03-13 1991-02-19 Omron Tateisi Electronics Co. Electromagnetic relay
EP0487069A2 (fr) * 1990-11-21 1992-05-27 Omron Corporation Relais électromagnétique

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61218025A (ja) * 1985-03-25 1986-09-27 松下電工株式会社 有極リレ−
JPS61218035A (ja) * 1985-03-25 1986-09-27 松下電工株式会社 有極電磁石
JPS6298701A (ja) * 1985-10-25 1987-05-08 Matsushita Electric Works Ltd 電磁石装置
DE3538636A1 (de) * 1985-10-30 1987-05-07 Siemens Ag Elektromagnetisches relais
US4975666A (en) * 1989-03-28 1990-12-04 Matsushita Electric Works, Ltd. Polarized electromagnetic relay
EP0423834A3 (en) * 1989-10-20 1991-12-27 Omron Corporation Electromagnetic relay
CZ281297B6 (cs) * 1992-05-15 1996-08-14 Siemens Aktiengesellschaft Polarizované výkonové relé
JP3412358B2 (ja) * 1995-09-27 2003-06-03 オムロン株式会社 電磁石装置
FR2742917B1 (fr) * 1995-12-22 1998-02-13 Suisse Electronique Microtech Dispositif miniature pour executer une fonction predeterminee, notamment microrelais
DE19627845C1 (de) * 1996-07-10 1997-09-18 Siemens Ag Verfahren zur Herstellung eines elektromagnetischen Relais
DE19820821C1 (de) * 1998-05-09 1999-12-16 Inst Mikrotechnik Mainz Gmbh Elektromagnetisches Relais
KR100452659B1 (ko) * 2000-03-28 2004-10-14 마츠시다 덴코 가부시키가이샤 전자기 구동 장치 및 전자기 릴레이
WO2016120881A1 (fr) * 2015-02-01 2016-08-04 K.A. Advertising Solutions Ltd. Actionneur électromagnétique
JP6471678B2 (ja) * 2015-10-29 2019-02-20 オムロン株式会社 接触片ユニット及びリレー
JP6414019B2 (ja) 2015-10-29 2018-10-31 オムロン株式会社 リレー
JP6458705B2 (ja) 2015-10-29 2019-01-30 オムロン株式会社 リレー
KR101783734B1 (ko) * 2015-12-30 2017-10-11 주식회사 효성 고속스위치용 조작기
DE102018109856B3 (de) * 2018-04-24 2019-08-01 Phoenix Contact Gmbh & Co. Kg Relais

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2423286A1 (de) * 1974-05-14 1975-11-27 Fleischmann Geb Gepoltes gleichstromrelais
EP0015389A1 (fr) * 1979-02-14 1980-09-17 International Standard Electric Corporation Relais miniature disposé dans un boîtier
GB2066577A (en) * 1979-12-21 1981-07-08 Ericsson Telefon Ab L M Electromagnetic relays

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1083873A (en) * 1965-02-26 1967-09-20 Telephone Mfg Co Ltd Improvements in or relating to electromagnetic relays

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2423286A1 (de) * 1974-05-14 1975-11-27 Fleischmann Geb Gepoltes gleichstromrelais
EP0015389A1 (fr) * 1979-02-14 1980-09-17 International Standard Electric Corporation Relais miniature disposé dans un boîtier
GB2066577A (en) * 1979-12-21 1981-07-08 Ericsson Telefon Ab L M Electromagnetic relays

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282099A2 (fr) * 1987-03-13 1988-09-14 Omron Tateisi Electronics Co. Relais électromagnétique
EP0282099A3 (fr) * 1987-03-13 1990-04-25 Omron Tateisi Electronics Co. Relais électromagnétique
US4993787A (en) * 1987-03-13 1991-02-19 Omron Tateisi Electronics Co. Electromagnetic relay
EP0293199A2 (fr) * 1987-05-29 1988-11-30 Nec Corporation Relais électromagnétique
EP0293199A3 (en) * 1987-05-29 1990-05-02 Nec Corporation Electromagnetic relay
EP0355817A2 (fr) * 1988-08-25 1990-02-28 Omron Tateisi Electronics Co. Relais électromagnétique
EP0355817A3 (fr) * 1988-08-25 1990-12-19 Omron Tateisi Electronics Co. Relais électromagnétique
EP0487069A2 (fr) * 1990-11-21 1992-05-27 Omron Corporation Relais électromagnétique
EP0487069A3 (en) * 1990-11-21 1993-01-27 Omron Corporation Electromagnetic relay
US5270674A (en) * 1990-11-21 1993-12-14 Omron Corporation Electromagnetic relay

Also Published As

Publication number Publication date
JPS59143235A (ja) 1984-08-16
DE3463707D1 (en) 1987-06-19
EP0118715B1 (fr) 1987-05-13
DE3303665A1 (de) 1984-08-09
US4551698A (en) 1985-11-05

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