EP0849755A2 - Elektromagnetisches Relais für hohe Wärmebelastung - Google Patents
Elektromagnetisches Relais für hohe Wärmebelastung Download PDFInfo
- Publication number
- EP0849755A2 EP0849755A2 EP97120100A EP97120100A EP0849755A2 EP 0849755 A2 EP0849755 A2 EP 0849755A2 EP 97120100 A EP97120100 A EP 97120100A EP 97120100 A EP97120100 A EP 97120100A EP 0849755 A2 EP0849755 A2 EP 0849755A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- armature
- switching spring
- relay according
- spring
- 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.)
- Ceased
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/56—Contact arrangements for providing make-before-break operation, e.g. for on-load tap-changing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H2047/025—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay with taking into account of the thermal influences, e.g. change in resistivity of the coil or being adapted to high temperatures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
Definitions
- Such a simply constructed relay with a base body serving bobbin, a U-shaped core yoke and one plate-shaped anchor is for example from the document WO 90/09028 known.
- the switch spring is there directly with connected to the anchor and also via an angled section welded to the yoke. So it serves both as an anchor bearing spring as well as an electrical connection for the mobile Contacts.
- the cross sections for the load circuit be oversized to reduce the power dissipation hold, also the coil for a small power dissipation can be designed with a high winding wire volume.
- the contact and required in the conventional structure The armature return spring must be made of a material with low relaxation behavior at high temperatures, i.e. for example made of an expensive beryllium-alloyed copper spring material be executed. These parameters physically limit the Miniaturization of electromechanical relays for large loads at high ambient temperature.
- the aim of the present invention is to provide a relay of the input mentioned type with the simplest possible structure and to produce as few individual parts as possible, the individual parts have a simple shape and with as little processing as possible can be joined together, so that inexpensive Materials can be used and still that Volume can be kept small depending on the application.
- the relay is intended in particular for applications with high thermal loads be suitable.
- this goal is at the beginning of a relay mentioned type achieved in that the switching spring a highly insulating material with high spring stiffness and low relaxation behavior at high temperatures, that the switch spring at its contacting end Bridge contact element made of highly conductive material carries and that the anchor when switching directly to the switching spring attacks.
- the switching spring therefore needs not to conduct a load current itself, since this only via the Bridge contact flows at its end. She doesn't need one either It must therefore also take over the bearing function for the anchor not to be bent and can therefore be proportionate stiff material in the simplest form without subsequent Machining. Come into consideration high temperature resistant plastic materials, but preferably a ceramic material.
- the contact spring therefore from a flat ceramic strip of elongated, rectangular or almost rectangular, for example also trapezoidal, cross-section. It is preferred also independent of the anchor on a fixed part of the relay, preferably attached to the coil body, the armature is not connected to it, but when the relay is energized with a fastening section presses on them.
- An advantageous embodiment of the invention is a coil former as the main body, which holds the coil between two coil flanges wearing; the core yoke forms a core leg and a parallel yoke leg, the free ends in the area of a first coil flange are aligned, the armature is in the first coil flange is freely movable and the Switch spring is attached to this first coil flange.
- An arrangement is favorable in which the anchor is in a is arranged approximately perpendicular to the coil axis and with the end faces of the core leg and the yoke leg forms two working air gaps, the switching spring in attached to a peripheral region of the first coil flange is between the end sections of the core leg and of the yoke leg extends through, the anchor in one crosses approximately parallel to it and in a to Attachment point opposite peripheral area the Contact bridge carries.
- the relay shown in the drawing has a coil former 1 made of ceramic material, which also serves as the main body and supports for the functional elements.
- a coil winding 2 is applied; she will limited by a first flange 3 and a second flange 4.
- a U-shaped core yoke 5 is with a core leg 6 inserted through an axial opening 7 of the bobbin 1, while a yoke leg 8 is parallel to it next to the coil extends.
- the coil former 1 is made of ceramic material and is preferably produced by powder injection molding. To the second flange 4 are also two coil connections 1a directly integrally formed so that they with the winding ends 2a Coil 2 can be wrapped directly. This allows the temperature-resistant Coil body 1 directly in a circuit board be soldered in.
- first coil flange 3 In the first coil flange 3 are near the bottom two drawer-like shafts 10 and 11 molded into the two mating contact carriers 12 from opposite sides and 13 are inserted with counter contacts 12a and 13a. Furthermore is a ceramic spring as switching spring 14 of simpler rectangular shape provided with one end in the top Area of the first coil flange 3 in a formed there Slot 15 is fixed.
- the attachment can, for example by soldering, by casting or by means of ceramic cement be made.
- Switch spring 14 At the other end she wears Switch spring 14 is a transverse contact band, which as Bridge contact 14a with the two fixed mating contacts 12a and 13a cooperate, so when tightening the Anchor bridges.
- the bridge contact 14a can be soldered with the pre-galvanized switching spring in this area 14 are connected.
- the flat switching spring 14 is so outward standing obliquely clamped that they have a bias to Anchor experiences and the required restoring force delivers.
- the armature 9 is in a free recess 16 of the bobbin flange 2 freely movable and by stops and retaining tabs 17, 18 and 19 cannot be lost on all sides secured. In the middle it has a spherical pressure wart 20 with which he is at 90 ° to the longitudinal extension of the armature rotated switching spring actuated. At The example shown is the force of the magnet system approximately with a gear ratio of 2: 1 to Bridge contact 14a transferred. When the armature is not excited 9, the spring 14 presses the armature against the stop lugs 17, 18 and 19.
- the assembly of the armature 9 is carried out according to the schematic representation in Figure 5 in such a way that it is initially V-shaped is angled (state 9-1); is in this state Length lx of the armature in the area of a lateral recess 21 so shortened that lx is less than the length l1 which the Opening length of the recess 16 designated on the retaining lug 19.
- the anchor can be in the state 9-1 on the retaining lug 19 are inserted into the recess 16. After that the anchor by attacking a force F from the back the actuating nipple 20 along one through constrictions 22 formed predetermined bending point deformed until a predetermined overstroke is reached; he is in this state approximately flat and takes the length l2. With this length l2 it is held captive behind the retaining lugs 17, 18 and 19.
- the time is the closing of the contacts is detected, so that by a defined Overpress the required overstroke as contact erosion safety is set.
- the switching spring 14 to the armature the switching spring 14 in a plane parallel to the anchor, but with her Linear expansion by 90 ° compared to the linear expansion of the Anchor is arranged twisted, it is ensured that none internal fastening stresses in the relatively brittle, but there are still sufficient resilient ceramic switching springs, that could lead to breakage.
- this mentioned crossed arrangement of the spring to the anchor is also the No arrangement of the armature to the two pole faces 6a and 8a impaired because the switching spring 14 in the free area between the end portions of the core leg 6 and the yoke leg 8 lies.
- Figures 3 and 4 are sections III-III and IV-IV in Longitudinal and transverse directions are shown.
- the relay can operate at higher temperatures be operated with a low-resistance coil; it can be compared to conventional relays at higher temperatures also smaller cross sections for the electrical Load circuit and the magnetic circuit are used, which means less Material is consumed. So that it can also be exposed Places with high ambient temperatures are used.
- the bobbin is also a bobbin from a highly filled thermoplastic, for example with mineral, ceramic or glass fillers.
- the relay can also be equipped with SMT connections if required be provided.
- the contact arrangement can also instead of the bridge closer shown, a bridge opener or form a bridge changer.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
Description
- einem einen Spulenkörper mit Wicklung tragenden, U-förmigen Kernjoch,
- einem die freien Enden des Kernjoches in Abhängigkeit von der Spulenerregung überbrückenden flachen Anker,
- einer im Bereich des Ankers in einer zu diesem parallelen Ebene angeordneten Schaltfeder in Form eines langgestreckten Streifens, welche mit ihrem einen Ende befestigt ist und an ihrem anderen Ende mindestens ein bewegliches Kontaktelement trägt, und
- mit mindestens einem Paar von feststehenden Gegenkontaktelementen, welche durch die Schaltfeder in einer seiner Schaltpositionen überbrückt werden.
Die Erfindung wird nachfolgend an einem Ausführungsbeispiel anhand der Zeichnung näher erläutert. Es zeigen
Claims (11)
- Elektromagnetisches Relais miteinem einen Spulenkörper mit Wicklung (2) tragenden, U-förmigen Kernjoch (5),einem die freien Enden (6a,8a) des Kernjoches (5) in Abhängigkeit von der Spulenerregung überbrückenden flachen Anker (9),einer im Bereich des Ankers (9) in einer zu diesem annähernd parallelen Ebene angeordneten Schaltfeder (14) in Form eines langgestreckten Streifens, welche mit ihrem einen Ende befestigt ist und an ihrem anderen Ende mindestens ein bewegliches Kontaktelement (14a) trägt, undmit mindestens einem Paar von feststehenden Gegenkontaktelementen (12,13), welche durch die Schaltfeder (14) in einer seiner Schaltpositionen überbrückt werden,daß die Schaltfeder (14) an ihrem kontaktgebenden Ende ein Brückenkontaktelement (14a) aus hochleitfähigem Material trägt unddaß der Anker (9) beim Schalten unmittelbar an der Schaltfeder (14) angreift.
- Relais nach Anspruch 1,
dadurch gekennzeichnet, daß die Schaltfeder (14) aus Keramikmaterial besteht. - Relais nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Schaltfeder (14) unabhängig vom Anker (9) an einem feststehenden Trägerkörper (1) befestigt ist und daß der Anker (9) bei Erregung des Relais mit einem Betätigungsabschnitt (20) auf sie drückt. - Relais nach Anspruch 3,
dadurch gekennzeichnet, daß ein Spulenkörper (1) als Grundkörper die Spule (2) zwischen zwei Spulenflanschen (3,4) trägt, daß das Kernjoch (5) einen Kernschenkel (6) und einen dazu parallelen Jochschenkel (8) bildet, deren freie Enden (6a,8a) im Bereich eines ersten Spulenflansches (3) fluchten,daß der Anker (9) in dem ersten Spulenflansch (3) frei beweglich gelagert ist unddaß die Schaltfeder (14) an dem ersten Spulenflansch (3) befestigt ist. - Relais nach Anspruch 4,
dadurch gekennzeichnet, daß der Anker (9) in einer zur Spulenachse annähernd senkrechten Ebene angeordnet ist und mit den Stirnseiten (6a,8a) des Kernschenkels (6) und des Jochschenkels (8) Arbeitsluftspalte bildet, daß die Schaltfeder (14) in einem peripheren Bereich des ersten Spulenflansches (3) befestigt ist, sich zwischen den Endabschnitten des Kernschenkels (6) und des Jochschenkels (8)hindurch erstreckt, dabei den Anker (9) in einer zu ihm annähernd parallelen Ebene kreuzt und in einem zur Befestigungsstelle entgegengesetzten peripheren Bereich des Spulenflansches (3) die Kontaktbrücke (14a) trägt. - Relais nach Anspruch 4 oder 5,
dadurch gekennzeichnet, daß der Spulenkörper (1) aus Keramikmaterial besteht und in seinem ersten Spulenflansch (3) einen Schlitz (15) zur Befestigung der Schaltfeder (14) aufweist. - Relais nach Anspruch 6,
dadurch gekennzeichnet, daß der Schlitz (15) die Schaltfeder (14) schräg einspannt und sie dadurch zum Anker (9) hin vorspannt. - Relais nach einem der Ansprüche 4 bis 7,
dadurch gekennzeichnet, daß der Anker (9) als eine in der Grundform rechteckige Platte ausgebildet ist, die ohne Lagerbefestigung zwischen Haltenasen (17,18,19) begrenzt ist. - Relais nach Anspruch 8,
dadurch gekennzeichnet, daß der Anker (9) allseitig in Hinterschneidungen der Haltenasen (17,18,19) angeordnet und durch plastische Deformation entlang einer Sollbiegestelle (22) unverlierbar montiert ist. - Relais nach einem der Ansprüche 6 bis 9,
dadurch gekennzeichnet, daß an dem Spulenkörper (1) einstückig Spulenanschlußstifte (1a) angeformt sind, an denen die Wicklungsenden (2a) der Spule (2) befestigt sind. - Relais nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, daß der Anker (9) mit einer angeformten Betätigungswarze (20) die Schaltfeder (14) an einer definierten Stelle betätigt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19653105 | 1996-12-19 | ||
DE19653105A DE19653105C1 (de) | 1996-12-19 | 1996-12-19 | Elektromagnetisches Relais für hohe Wärmebelastung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0849755A2 true EP0849755A2 (de) | 1998-06-24 |
EP0849755A3 EP0849755A3 (de) | 1998-12-23 |
Family
ID=7815419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97120100A Ceased EP0849755A3 (de) | 1996-12-19 | 1997-11-17 | Elektromagnetisches Relais für hohe Wärmebelastung |
Country Status (4)
Country | Link |
---|---|
US (1) | US5896075A (de) |
EP (1) | EP0849755A3 (de) |
JP (1) | JPH10188766A (de) |
DE (1) | DE19653105C1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19804572A1 (de) * | 1997-05-05 | 1999-08-12 | Schrack Components Ag | Relais mit Kontaktfedern |
SG10201703450TA (en) * | 2017-04-27 | 2018-11-29 | Schneider Electric Asia Pte Ltd | A card structure for use in an electromechanical relay and an electromechanical relay comprising the card structure |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6188033A (ja) * | 1984-10-04 | 1986-05-06 | Kyocera Corp | セラミツク製弾条体 |
EP0393226A1 (de) * | 1989-04-21 | 1990-10-24 | NHK SPRING CO., Ltd. | Verfahren zur Herstellung von keramischen Produkten, insbesondere von keramischen Federn |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2348423B2 (de) * | 1973-09-26 | 1975-12-11 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Polarisiertes elektromagnetisches Relais |
GB2095911B (en) * | 1981-03-17 | 1985-02-13 | Standard Telephones Cables Ltd | Electrical switch device |
US4535311A (en) * | 1983-05-20 | 1985-08-13 | Nec Corporation | Contact support means for an electromagnetic relay |
US4684909A (en) * | 1985-03-26 | 1987-08-04 | Siemens Aktiengesellschaft | Electromagnetic relay |
US4734668A (en) * | 1986-05-12 | 1988-03-29 | Siemens Aktiengesellschaft | Electromagnetic relay |
FR2642896A1 (fr) * | 1989-02-06 | 1990-08-10 | Ruchonnet Bernard | Micro-relais electromecanique |
DE3904238A1 (de) * | 1989-02-13 | 1990-08-16 | Wilfried Schraufstetter | Schneckenpresse, insbesondere zum zerkleinern von materialien, wie organischen abfaellen od. dgl. |
AT410724B (de) * | 1994-10-10 | 2003-07-25 | Tyco Electronics Austria Gmbh | Relais |
-
1996
- 1996-12-19 DE DE19653105A patent/DE19653105C1/de not_active Expired - Fee Related
-
1997
- 1997-11-17 EP EP97120100A patent/EP0849755A3/de not_active Ceased
- 1997-12-16 JP JP9346350A patent/JPH10188766A/ja not_active Withdrawn
- 1997-12-18 US US08/993,225 patent/US5896075A/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6188033A (ja) * | 1984-10-04 | 1986-05-06 | Kyocera Corp | セラミツク製弾条体 |
EP0393226A1 (de) * | 1989-04-21 | 1990-10-24 | NHK SPRING CO., Ltd. | Verfahren zur Herstellung von keramischen Produkten, insbesondere von keramischen Federn |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 010, no. 265 (M-515), 10. September 1986 & JP 61 088033 A (KYOCERA CORP), 6. Mai 1986 * |
Also Published As
Publication number | Publication date |
---|---|
EP0849755A3 (de) | 1998-12-23 |
JPH10188766A (ja) | 1998-07-21 |
US5896075A (en) | 1999-04-20 |
DE19653105C1 (de) | 1998-04-23 |
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