EP1141985B1 - Elektromagnetisches relais - Google Patents
Elektromagnetisches relais Download PDFInfo
- Publication number
- EP1141985B1 EP1141985B1 EP99967875A EP99967875A EP1141985B1 EP 1141985 B1 EP1141985 B1 EP 1141985B1 EP 99967875 A EP99967875 A EP 99967875A EP 99967875 A EP99967875 A EP 99967875A EP 1141985 B1 EP1141985 B1 EP 1141985B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electromagnetic relay
- relay according
- contact
- coil
- armature
- 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.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000013011 mating Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- 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
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
Definitions
- Such a relay is for example from EP 0 211 446 B1 known.
- a tension spring serves as the return spring which between the two, via your storage location in the yoke extended anchors is arranged. This relay serves to safely interrupt a load circuit. Through the Series connection of the two anchors and thus the two contact points the load circuit is interrupted even if a contact point is welded.
- Another generic relay is from the US-PS 2,353,377 known. With this relay, the two point Contact springs and the two counter-contact elements each a common connection. The relay is used for safe Closing a load circuit even with strong vibrations and accelerating, such as when landing an airplane, which is achieved by connecting the two anchors in parallel becomes.
- FIGS. 8 and 9 of US 2,353,377 A second embodiment is shown in FIGS. 8 and 9 of US 2,353,377 shown, in which two contact springs per anchor are arranged. With the relay of this embodiment two load circuits can thus be safely connected.
- the anchors are also reset using a tension spring, which extended beyond the storage points Anchor attacks.
- the invention has for its object the generic To further develop relays such that two brushless DC motors each with three arranged in a star connection Windings in the star center through the electromagnetic Relays connected or separated from each other can be.
- the object is achieved in that Generic relay described above, the contact spring each provided with a connection and two contact pieces is and each contact piece with a separate connector arranged counter-contact element cooperates.
- the relay thus has two connections on the contact springs and four connections, each with the mating contact elements connected. About these six Connections can therefore be made using a single relay partial windings of the two motors connected in parallel be connected or separated at the star center.
- the contact spring is preferably E-shaped, wherein the contact pieces at the free ends of the outer legs are arranged and the free end of the middle leg is set and as a return spring means for the respective Serves anchor. Due to the E-shaped design of the contact spring a compact and inexpensive construction is achieved. This is further promoted by the fact that the free fixed end of the middle leg of the contact spring with the connection of the contact spring is connected.
- the anchor is also E-shaped, the legs of the anchor essentially under the legs of the E-shaped contact spring are arranged.
- This has the advantage that to achieve a maximum and equal contact force of the double contacts Manufacturing-related tolerances through an overstroke adjustment of all four contacts arranged on the contact spring in can be easily eliminated.
- the anchor preferably has notches at the bending points to get a defined target bending point.
- the connections on the contact springs as well two connections on the mating contact elements conductive connected with each other. Due to the parallel connection redundancy and thus a secure connection or Separate the two star centers of the three Windings of the motors connected in parallel.
- the relay shown in Figures 1 to 7 consists of a bobbin 1 with two side symmetrical flanges 2A and 2B, between which the bobbin 1 with a Winding 3 is provided.
- As connections for the winding 3 are round or in the side flanges 2A and 2B injected rectangular wires 4A and 4B.
- the coil former 1 is hollow in the middle and is axially continuous round or rectangular core 5.
- On the bobbin 1, a yoke 6 is arranged parallel to the axis of the core 5, at each of its two end faces movable armature 7A and 7B is mounted.
- the yoke 6 serves for flux guidance in the magnetic circuit and is designed as a flat sheet and to provide holes on four pins be plugged onto the flanges 2A and 2B of the coil former 1.
- the connection is made, for example, by hot stamping the cone.
- the core 5 and the yoke 6 have almost the same length.
- the end faces of the core 5 form the pole faces 5A and 5B for the two anchors 7A and 7B.
- the core 5 can either be a pluggable part without enlarged pole faces 5A, 5B, as shown in Figure 4, or as one of the bobbin 1 overmolded part with enlarged pole faces 5A 'and 5B ', as shown in FIG. 5.
- the two anchors 7A and 7B are flat and essentially E-shaped trained and thus consist of a base 70, two outer legs 71 and 73 and a middle leg 72.
- the contact spring 8A or 8B is at its base 80 via two riveted or welded connections 9 connected to the base 70 of the armature 7A or 7B.
- the outer legs 81 and 83 of the contact spring 8A and 8B respectively stand over the outer free ends of the outer legs 71 and 73 of the armatures 7A and 7B, respectively, and carry in this protruding area a contact piece 10A to 10D.
- This four contact pieces 10A to 10D are when the coil is energized by the armature 7A or 7B against four mating contacts 11A to 11d pressed, which each on separately formed connections 12A to 12D are provided, each in grooves the flanges 2A, 2B of the bobbin 1 are guided.
- the Contacts 10A to 10D and the counter contacts 11A to 11D designed as riveted or welded contacts and thus to each other arranged that the contact pieces 11A to 11D against the spring force of the contact spring 8A or 8B the counter contacts 11A to 11D are pressed.
- the two E-shaped anchors 7A and 7B serve only the middle legs 72 and in each case the middle area the base 70 for flow guidance. Since the outer legs 81 and 83 of the contact spring 8A or 8B on the outer legs 71 and 73 of the armatures 7A and 7B, respectively, are used to increase the overstroke the outer legs 71, 73 the anchor inwards, that means towards the spool or to reduce the overstroke turned outwards. In order to bend the outer legs 71 or 73 of the armatures 7A or 7B to defined predetermined bending points are obtained between the base 70 and the outer Legs 71 and 73 notches 74 are provided.
- the middle leg serves as the return spring 82 of the contact spring 8A or 8B.
- This middle leg 82 is over the free end of the middle leg 72 of the anchor 7A and 7B extended and each on another Connection 13A or 13B fixed.
- the middle leg 82 the E-shaped spring 8A and 8B is thus used for Power supply and for resetting the armature.
- the connections 13A and 13B are identical to the terminals 12A to 12D formed and also in grooves of the flanges 2A, 2B of the coil body 1 led to a low-tolerance structure of the relay to achieve.
- the middle leg 82 of the contact spring 8A and 8B is in the area in which it over the free Protrudes end of the middle leg 72 of the armature 7A or 7B, around the middle leg 72 of the anchor in the direction Coil body 1 bent and in the area of the working air gap between the armature 7A or 7B and the pole face 5A or 5B of the core 5 with the connection 13A or 13B through a Riveted or welded joint connected.
- the relay has an essentially rectangular plan, terminals 12A to 12D and 13A and 13B, respectively are arranged on the narrower end faces.
- terminals 12A to 12D and 13A and 13B are arranged on the narrower end faces.
- two coil connections 14A, 14B arranged on which the wires 4A, 4B for the winding 3 of the coil are soldered.
- the entire relay is on one insulating base plate 15 made of plastic, in which also the coil connections arranged on the long side of the relay 14A, 14B are fixed. All connections 12A to 12D, 13A, 13B and the coil connections 14A, 14B are in the essentially L-shaped, each with one leg of the L in grooves on the top of the base plate 15 is added is.
- the relay is provided with a protective housing 16, which on the front outer surfaces each with grooves 17 is provided, in each of which the other leg of the L-shaped connections 12A to 12D and 13A, 13B and is thus firmly attached.
- the protective housing 16 is in the Mounted from above over the insulating base plate 15 and potted in the plane of the base plate.
- the entire relay is mirror-symmetrical across its longitudinal extent educated.
- connections 12A to 12D and 13A, 13B identical parts are used. Through the Use of many of the same parts can be used in manufacturing the number of tools can be kept very low, so that Relay is very inexpensive to manufacture.
- FIG. 8 shows the circuit diagram according to which the relay according to the invention for connecting the star centers two DC motors with three partial windings each A to C or A 'to C' is used.
- the illustrated Circuit are just the reference numbers of the coil connections 14A and 14B and the connections 12A to 12D and 13A, 13B.
- the partial windings can also be connected in parallel within of the relay by three metallic bridges or strands between the terminals 12A and 12C or 12B and 12D and the two connections 13A and 13B to the contact spring 8A, 8B.
- Figure 9 shows an alternative use of the relay, wherein here the two double closers are connected in series to to ensure safe separation of load circuits. If, for example, a contact were to weld, the Load circuit still through the opening of the second double closer to be interrupted. Because of the double contacts with this circuit also the switching reliability when closing of contacts compared to simple contacts elevated.
- FIG. 10 and 11 show further possible uses of the relay, wherein according to Figure 10, the relay for switching two loads with two double contacts each and according to FIG. 11 for switching four different loads over the separated Way of the two double contacts is used.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Description
- an einem Spulenende jeweils senkrecht zur Spulenachse angeordnet ist,
- an einem Jochende gelagert ist,
- mit einem Ende des Kerns einen Arbeitsluftspalt bildet,
- über Rückstellfedermittel in seiner ausgeschwenkten Position gehalten ist und
- über eine Kontaktfeder ein Kontaktstück trägt, das mit einem einen Anschluß aufweisenden Gegenkontaktelement zusammenwirkt.
- Figur 1
- das erfindungsgemäße Relais in einer Schrägansicht,
- Figur 2
- das erfindungsgemäße Relais in der Ansicht von oben,
- Figur 3
- eine Seitenansicht des Relais,
- Figur 4
- den Schnitt A - A aus Figur 2,
- Figur 5
- die Ansicht gemäß Figur 4 mit einem modifizierten Kern,
- Figur 6
- den Schnitt B - B aus Figur 2,
- Figur 7
- den Schnitt C - C aus Figur 3,
- Figur 8
- das Schaltbild des Relais gemäß den Figuren 1 bis 7 bei der Verbindung zweier Sternmittelpunkte von drei Wicklungen parallel geschalteter Gleichstrommotoren, und
- Figur 9 bis 11
- Schaltpläne alternativer Verwendungsmöglichkeiten des erfindungsgemäßen Relais.
Claims (16)
- Elektromagnetisches Relais
mit einer Spule
mit Spulenkörper (1),
Wicklung (3)
und axial durchgehendem Kern (5), ferner mit einem neben der Spule und parallel zu deren Achse angeordnetem Joch (6)
und zwei flachen Ankern (7A, 7B), von denen jeweils einerdadurch gekennzeichnet, daß die Kontaktfeder (8A, 8B) jeweils mit einem Anschluß (13A, 13B) und zwei Kontaktstücken (10A bis 10D) versehen ist und jedes Kontaktstück (10A bis 10D) mit einem an einem separaten Anschluß (12A bis 12D) angeordneten Gegenkontaktelement (11A bis 11D) zusammenwirkt.an einem Spulenende jeweils senkrecht zur Spulenachse angeordnet ist,an je einem Jochende gelagert ist,mit einem Ende des Kerns (5) einen Arbeitsluftspalt bildet,über Rückstellfedermittel in der ausgeschwenkten Position gehalten ist undüber eine Kontaktfeder (8A, 8B) ein Kontaktstück trägt, das mit einem einen Anschluß aufweisenden Gegenkontaktelement zusammenwirkt, - Elektromagnetisches Relais nach Anspruch 1,
dadurch gekennzeichnet, daß die Kontaktfeder E-förmig ausgebildet ist und somit aus einer Basis (80), zwei äußeren (81, 83) und einem mittleren Schenkel (82) besteht und an den freien Enden der äußeren Schenkel (81, 83) die Kontaktstücke (10A bis 10D) angeordnet sind. - Elektromagnetisches Relais nach Anspruch 2
dadurch gekennzeichnet, daß die Kontaktfeder (8A, 8B) an ihrer Basis (80) mit dem Anker (7A, 7B) verbunden ist. - Elektromagnetisches Relais nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß der mittlere Schenkel (82) der E-förmigen Kontaktfeder (8A, 8B) an seinem freien Ende festgelegt ist und als Rückstellfedermittel für den jeweiligen Anker (7A, 7B) dient. - Elektromagnetisches Relais nach Anspruch 4,
dadurch gekennzeichnet, daß das freie Ende des mittleren Schenkels (82) der Kontaktfeder (8A, 8B) jeweils mit dem Anschluß (13A, 13B) verbunden ist. - Elektromagnetisches Relais nach einem der Ansprüche 2 bis 5,
dadurch gekennzeichnet, daß der Anker (7A, 7B) E-förmig ausgebildet ist und somit aus einer Basis (70), zwei äußeren (71, 73) und einem mittleren Schenkel (72) besteht und die Schenkel des E-förmigen Ankers (7A, 7B) im wesentlichen unter den Schenkeln der E-förmigen Kontaktfeder (8A, 8B) angeordnet sind. - Elektromagnetisches Relais nach Anspruch 6,
dadurch gekennzeichnet, daß der mittlere Schenkel (72) der Anker (7A, 7B) zur Flußführung dient und die seitlichen Schenkel der Anker zur Überhubvergößerung nach außen bzw. zur Überhubverkleinerung nach innen abgebogen sind. - Elektromagnetisches Relais nach Anspruch 6 oder 7,
dadurch gekennzeichnet, daß zwischen der Basis (70) des E-förmigen Ankers (7A bzw. 7B) und den äußeren Schenkeln (71, 73) Einkerbungen (74) vorgesehen sind. - Elektromagnetisches Relais nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß die Anschlüsse (12A und 12C), (12B und 12D) und (13A und 13B) jeweils über eine Litze oder eine metallische Brücke miteinander leitend verbunden sind. - Elektromagnetisches Relais nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, daß das Relais mit einem Schutzgehäuse (16) versehen ist, welches an drei Seitenflächen Nuten (17) aufweist, an denen die Anschlüsse (12A bis 12D; 13A, 13B) sowie auch zwei Spulenanschlüsse (14A, 14B) geführt sind. - Elektromagnetisches Relais nach Anspruch 10
dadurch gekennzeichnet, daß es auf einer als Kunststoffträgerteil ausgebildeten Grundplatte (15) aufgebaut ist, in welcher die Spulenanschlüsse (14A, 14B) fixiert sind. - Elektromagnetisches Relais nach Anspruch 11,
dadurch gekennzeichnet, daß das Schutzgehäuse (16) mit der Grundplatte (15) in der Ebene der Grundplatte (15) vergossen ist. - Elektromagnetisches Relais nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet, daß das Relais quer zur Längsachse des Kernes (5) spiegelsymmetrisch ist und die Anschlüsse (12A bis 12D; 13A, 13B) identisch sind. - Elektromagnetisches Relais nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, daß es zur Verbindung bzw. zur Auftrennung von drei in Sternschaltung angeordneten Wicklungen (A, B, C; A', B', C') von zwei Gleichstrommotoren verwendet wird. - Elektromagnetisches Relais nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, daß es zur Auftrennung eines Lastkreises verwendet wird. - Elektromagnetisches Relais nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, daß es zur Schaltung von bis zu vier Lasten verwendet wird.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19859577 | 1998-12-22 | ||
| DE19859577 | 1998-12-22 | ||
| PCT/DE1999/003936 WO2000038207A1 (de) | 1998-12-22 | 1999-12-09 | Elektromagnetisches relais |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1141985A1 EP1141985A1 (de) | 2001-10-10 |
| EP1141985B1 true EP1141985B1 (de) | 2002-10-02 |
Family
ID=7892324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99967875A Expired - Lifetime EP1141985B1 (de) | 1998-12-22 | 1999-12-09 | Elektromagnetisches relais |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1141985B1 (de) |
| DE (1) | DE59902983D1 (de) |
| WO (1) | WO2000038207A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7061350B2 (en) | 2001-12-18 | 2006-06-13 | Tyco Electronics Amp Gmbh | Electromagnetic relay with a triple contact bridge |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2353377A (en) * | 1942-04-03 | 1944-07-11 | R W Hood | Shockproof relay |
| DE1564620A1 (de) * | 1966-06-03 | 1969-08-28 | Siemens Ag | Als selbstaendiges Bauteil justierfrei montierbares Elektromagnetsystem |
| FR2204870B1 (de) * | 1972-11-02 | 1977-08-26 | Chauvin Arnoux Sa | |
| US3958200A (en) * | 1975-01-09 | 1976-05-18 | Guardian Electric Manufacturing Company | Blade construction for relay |
| DE3246256C2 (de) * | 1982-12-14 | 1986-04-24 | Siemens AG, 1000 Berlin und 8000 München | Elektromagnetisches Relais |
| US4682133A (en) * | 1985-08-14 | 1987-07-21 | Siemens Aktiengesellschaft | Electro-magnetic relay having two armatures |
| JPS6394527A (ja) * | 1986-10-08 | 1988-04-25 | オムロン株式会社 | 電磁リレ− |
-
1999
- 1999-12-09 WO PCT/DE1999/003936 patent/WO2000038207A1/de not_active Ceased
- 1999-12-09 EP EP99967875A patent/EP1141985B1/de not_active Expired - Lifetime
- 1999-12-09 DE DE59902983T patent/DE59902983D1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1141985A1 (de) | 2001-10-10 |
| DE59902983D1 (de) | 2002-11-07 |
| WO2000038207A1 (de) | 2000-06-29 |
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