EP1166307B1 - Elektromagnetisches relais - Google Patents
Elektromagnetisches relais Download PDFInfo
- Publication number
- EP1166307B1 EP1166307B1 EP00914323A EP00914323A EP1166307B1 EP 1166307 B1 EP1166307 B1 EP 1166307B1 EP 00914323 A EP00914323 A EP 00914323A EP 00914323 A EP00914323 A EP 00914323A EP 1166307 B1 EP1166307 B1 EP 1166307B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- relay according
- spring contact
- contact
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
- H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/60—Contact arrangements moving contact being rigidly combined with movable part of magnetic circuit
Definitions
- the invention relates to an electromagnetic relay, the is universally applicable.
- a contact spring for a relay generally has two tasks fulfill. On the one hand, it carries a switch contact that by the spring force of the contact spring against a fixed contact is pressed, on the other hand, the current flows to it Switching contact. While in the first case the mechanical resilience is important, the second task requires one high electrical conductivity. Materials that are high Possess bending strength to withstand the high mechanical loads but have low conductivity on and vice versa. If the relay is to switch large currents, so the continuity resistance is due to the bad Conductivity of the contact spring in general too large and it an additional wire must be provided to allow the current leads to the moving contact.
- a relay is special to the spring either to perform widely, or to use a material that has good conductivity.
- the latter variant sets ahead that the mechanical loading of the spring is proportional is low.
- the spring can be arcuate be designed to accommodate the bending stress that occurs to distribute evenly.
- a relay is already known from DE 36 40 737 C2 has an arcuate leaf spring. This feather is on one Attached to one magnet yoke and with the other Riveted to the end of a flat side of the anchor. An extension this leaf spring carries a switch contact. In the area Much higher mechanical steps occur near the fortifications Loads on the spring material than in the middle of the spring. Such an arch shape is therefore only conditionally suitable due to low mechanical stress on the spring material the use of a material with high electrical To enable conductivity.
- the aim of the present invention is an electromagnetic To create a relay whose volume resistance is low without using additional parts need or the structure becomes more voluminous.
- this goal is achieved by a relay achieved according to claim 1.
- the relay according to the invention is advantageous because the mechanical Contact spring load very low and is even. This is mainly achieved by that the contact spring is designed as a moment spring.
- a moment spring can be defined by both Spring ends are attached to third parts in such a way that no rotation of the spring end to the respective third part around the attachment point.
- the contact spring has the property that the deformation the spring when moving so that the curvature change is almost constant. Because of this, the bending loads the contact spring largely constant along the Feather. The mechanical loads on the spring are also there small because of the length of the Contact spring is very large. This is the case if that free contact spring end attached to the free armature end is.
- the low load in the area of the contact spring ends is advantageously ensures that the mounting level of the movable contact spring end tangential to the direction of movement of the free anchor end, because the spring in the attachment point is only insignificant is bent.
- the attachment plane of the attachment end is essentially perpendicular to a shortest connecting line from a fastening edge on which the movable part of the Contact spring begins, lies to the armature axis of rotation.
- the volume resistance is further reduced if the Switch contact in a central area of the contact spring is arranged, because this shortens the current path from a connecting conductor to the switch contact. Also results
- This arrangement has the advantage that a path transformation from the free armature end to the switch contact occurs and the contact tear forces of the Switch contacts increase compared to an arrangement close the anchor end or beyond. In connection with one Anchor with a particularly large opening angle and so has a long way to go when closing a weaker design of the magnet system possible what is conducive to a compact structure. In addition, one can even softer material can be used for the contact spring, because the required restoring force is less.
- the contact spring has the shape of an elliptical section, because in this configuration, the load is particularly even distributed over the length of the contact spring.
- An additional advantage of the invention results from that the contact spring at the same time the anchor in a rest position preload, because smoit is an armature return spring dispensable.
- the production of the contact spring for an inventive Relay is particularly easy when the contact spring has a constant width over the entire length and for example holes to relieve the contact spring can be omitted at certain points.
- the contact spring preferably consists of an electrical one good conductive material, its mechanical properties due to the uniform low mechanical load but are sufficient.
- a coil 1 sits on a first leg of a core arrangement 3, so that there is an anchor bearing section 4 of the otherwise first leg not visible in the figures outside the coil 1 is located.
- a pole section 5 of a second Leg 6 of the core arrangement 3 forms a core pole face 7, the one with an armature pole face 8 at a free end 9 Anchor 10 cooperates.
- Edge of the armature bearing section 4 facing away is the armature 10 with an inner edge around a bearing edge 11 that defines the armature axis of rotation forms, pivoted, so that in the open State between the armature 10 and the armature bearing section 8 results in a wedge-shaped armature bearing gap 12 which in an anchor closing position disappears.
- the inside edge results by the formation of two lugs 20 on the anchor 10.
- the anchor 10 is essentially L-shaped and arranged so that the cross leg of the L, the free Anchor end 9 represents, facing outwards.
- the anchor 10 gives way to the extent that it is in a central section 14 is bent inwards.
- the free armature end 9 forms with its armature pole face 8 and the core pole face 7 a working air gap 15.
- the armature pole face 8 stands in the area of its front in the closing direction End 8a substantially perpendicular to a connecting line to the bearing edge 11.
- the core pole surface 7 extends when the Armature 10 at least approximately parallel to the armature pole face 8.
- a contact spring 16 has among other things the task the inner edge of the armature 10 against the bearing edge 11 of the end section 4 to press, so that the armature 10 only a rotary movement is possible.
- the opening angle of the anchor bearing gap 12 of such Magnet system is, for example, 10 ° large compared to one conventional hinged anchor system, the opening angle of which is usually is not greater than 5 °.
- a fastening end 17 of the contact spring 16 is on the armature bearing section 4 on the side where the bearing edge is located 11 is preferably close to a bobbin flange 13 by injecting it together with one not shown Connection conductor, attached. In the area of their fastening end 17, the contact spring 16 approaches tangentially to a plane parallel to the end face of the armature bearing section 4 lies.
- this criterion is not the same Dimensions are met if, for example, design considerations to use the space to a different location of the fastening edge to lead.
- the movable part 21 of the contact spring 16 is around the armature bearing section 4 and a longitudinal leg 22 of the armature 10 bent around and attached to the free anchor end 9.
- the mobile End 23 of the contact spring 16 follows in its movement the free anchor end 9.
- the contact spring 16 is in the area their attachment to the anchor 10 in a plane that is tangential to the direction of movement of the free anchor end 9. With this arrangement, the contact spring 16 takes approximately that Form an ellipse, being about a quarter of the ellipse remains open.
- the attachment of the contact spring to the anchor could also be done by a mobile coupling.
- the contact spring 16 also be designed so that the shape strongly of an ellipse differs.
- the bearing edge lies due to the arrangement of the contact surface 16 11 approximately in the middle of the ellipse, so that for the contact spring 16 a "natural" load when the armature moves results that are evenly distributed over the entire length of the Contact spring 16 distributed.
- the contact spring 16 has a central section 24 which a switch contact 25 is attached. This acts in the exemplary embodiment of Figures 1 and 2 with a fixed contact 26 together, its position on a base body 27 is fixed.
- the switch contact 25 is about half Contact spring length, which creates a short current path to the not shown connecting conductor at the fastening end 17 of the Contact spring 16 results.
- the tearing forces to open the Contacts 25 and 26 are particularly large because between the free armature end 9 and the switch contact 25 a power transmission takes place.
- the distance of the contacts 25 and 26 in the opening position is still sufficient because of the opening angle the anchor bearing gap 12 chosen accordingly large can be. Due to the advantageous design of the anchor 10 there are still no disadvantages for efficiency of the magnetic circuit.
- the contact spring 16 moves in acts particularly advantageously as a return spring, the anchor 10 towards the open position since the anchor 10 when the relay is in the open position is biased.
- a return spring acts particularly advantageously as a return spring, the anchor 10 towards the open position since the anchor 10 when the relay is in the open position is biased.
- an additional one is also conceivable Use return spring. With the opening movement of the anchor 10 separate the contacts 25 and 26, and the Current path through the relay is interrupted.
- FIG Relay in a further exemplary embodiment according to FIG Relay according to the invention in a specific embodiment shown.
- the relay has no additional armature return spring, but the armature restoring force that pushes armature 35 into an open position Prestressed position is by the contact spring 30th applied.
- a relay it is also possible to use a relay to equip additional armature return spring; this can for example in the free area between the anchor 35 and the contact spring 30 may be arranged.
- the shape of the contact spring 30 differs from the shape of the contact spring 16 from the first embodiment and enables through several bending edges of the contact spring 30 a space-saving Construction.
- contacts 32, 33 and 34 can also be used as double contacts be carried out.
- a longitudinal slot would have to be used in this case in the contact spring 30 between the two switching contacts be provided to the inevitable tolerances equalize in the amount of contacts.
- the contacts can also be used as a bridge changer be switched. In this case the power supply would have to to the switch contacts separately from the spring clamping respectively.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Description
Elektromagnetisches Relais mit
- einem Grundkörper,
- einer Spule,
- einer Kernanordnung,
- einem Anker,
- mindestens einem Festkontakt,
- einer Kontaktfeder, die mit einem Befestigungsende an einem unbeweglichen Abschnitt des Relais befestigt ist, mit einem beweglichen Kontaktfederende und mindestens einem Schaltkontakt, der mit mindenstens einem der Festkontakte zusammenwirkt, wobei die Kontaktfeder insgesamt ungefähr eine Bogenform aufweist und als Momentenfeder ausgebildet ist und wobei der Schaltkontakt an einem mittleren Abschnitt der Kontaktfeder angeordnet ist.
- Figur 1
- ein erfindgungsgemässes Relais, bei dem die Kontaktfeder auch als Rückstellfeder wirkt.
- Figur 2
- eine Teilansicht mit dem Anker und dem Kontaktsystem des Relais von Figur 1, und
- Figur 3
- ein weiteres Ausführungsbeispiel eines erfindungsgemässen Relais.
Claims (17)
- Elektromagnetisches Relais miteinem Grundkörper (27),einer Spule (1),einer Kernanordnung (3),einem Anker (10,35),mindestens einem Festkontakt (26;33;34),einer Kontaktfeder (16;30), die mit einem Befestigungsende (17) an einem unbeweglichen Abschnitt des Relais befestigt ist, mit einem beweglichen Kontaktfederende (23) und mindestens einem Schaltkontakt (25;32), der mit mindenstens einem der Festkontakte (26;33,34) zusammenwirkt, wobei die Kontaktfeder (16;30) insgesamt ungefähr eine Bogenform aufweist und als Momentenfeder ausgebildet ist und wobei der Schaltkontakt (25;32) an einem mittleren Abschnitt (24) der Kontaktfeder (16;30) angeordnet ist,
der Anker (10;35) mit einem Ankerende an einem Ankerlagerabschnitt (4) der Kernanordnung (3) um eine Ankerdrehachse (11) schwenkbar angeordnet ist, daß sein anderes Ende ein freies Ankerende (9) bildet und daß das bewegliche Kontaktfederende (23) mit dem freien Ankerende (9) gekoppelt ist. - Relais nach Anspruch 1,
dadurch gekennzeichnet, dass die Ankerdrehachse (11) ungefähr in der Mitte des durch die Kontaktfeder (16;30) umschriebenen Bereichs liegt. - Relais nach Anspruch 1,
dadurch gekennzeichnet, dass die Befestigungsebene des beweglichen Kontaktfederendes (23) tangential zur Bewegungsrichtung des freien Ankerendes (9) liegt. - Relais nach Anspruch 1,
dadurch gekennzeichnet, dass die Befestigungsebene des Befestigungsendes (17) der Kontaktfeder (16;30) im wesentlichen senkrecht zu einer kürzesten Verbindungslinie (18) von einer Befestigungskante (19) an der der bewegliche Teil
der Kontaktfeder (16;30) beginnt, zur Ankerdrehachse (11) liegt. - Relais nach Anspruch 1,
dadurch gekennzeichnet, daß das bewegliche Kontaktfederende (23) beweglich mit dem freien Ankerende (9) gekoppelt ist. - Relais nach Anspruch 1,
dadurch gekennzeichnet, daß die Kontaktfeder (16;30) zugleich den Anker (10;35) in eine Ruheposition vorspannt. - Relais nach Anspruch 1,
dadurch gekennzeichnet, daß an den Anker (10;35) im Bereich der Ankerdrehachse (11) mindestens eine Nase angeformt ist, die an dem Ankerlagerabschnitt (4) anliegt, wodurch eine Verschiebung des Ankers (10;35) in Richtung des freien Ankerendes (9) verhindert ist. - Relais nach Anspruch 1,
dadurch gekennzeichnet, daß die Ankerdrehachse durch eine Lagerkante (11) an dem Ankerlagerabschnitt (4) der Kernanordnung (3) und eine daran anliegende Innenkante des Ankers (10;35) festgelegt ist. - Relais nach Anspruch 8,
dadurch gekennzeichnet, daß die Kontaktfeder (16;30) die Innenkante des Ankers (10;35) gegen die Lagerkante (11) drückt. - Relais nach Anspruch 1,
dadurch gekennzeichnet, daß die Kontaktfeder (16;30) aus einem elektrisch gut leitenden Material besteht. - Relais nach Anspruch 1,
dadurch gekennzeichnet, daß eine zusätzliche Rückstellfeder den Anker (10;35) in eine Ruheposition vorspannt. - Relais nach Anspruch 1,
dadurch gekennzeichnet, daß die Kontaktfeder (16) im wesentlichen einen Ellipsenabschnitt beschreibt. - Relais nach Anspruch 1,
dadurch gekennzeichnet, daß die Kontaktfeder (16;30) über ihrer Länge zumindest zwischen dem Befestigungsende (17) und dem Schaltkontakt (25;32) eine konstante Breite aufweist. - Relais nach Anspruch 1,
dadurch gekennzeichnet, daß ein Öffnungswinkel zwischen dem Anker (10;35) und dem Ankerlagerabschnitt (4) der Kernanordnung (3) zwischen 5° und 15° liegt. - Relais nach Anspruch 1,
dadurch gekennzeichnet, daß der Schaltkontakt (25;32) und die Festkontakte (26;33,34) als Doppelkontakte ausgeführt ist. - Relais nach Anspruch 15,
dadurch gekennzeichnet, daß die Kontaktfeder (16;30) im mittleren Abschnitt (24) zwischen den beiden Kontakten einen Längsschlitz aufweist. - Relais nach Anspruch 1, dadurch gekennzeichnet, daß die Ankerpolfläche (8) im Bereich ihres in Schließrichtung vorderen Endes (8a) im wesentlichen senkrecht zu einer Verbindungslinie zur Ankerdrehachse (11) steht und daß sich die Kernpolfläche (7) bei angezogenem Anker (10;35) zumindest annähernd parallel zur Ankerpolfläche (8) erstreckt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19915691A DE19915691A1 (de) | 1999-04-07 | 1999-04-07 | Elektromagnetisches Relais |
DE19915691 | 1999-04-07 | ||
PCT/IB2000/000424 WO2000060625A1 (de) | 1999-04-07 | 2000-04-07 | Elektromagnetisches relais |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1166307A1 EP1166307A1 (de) | 2002-01-02 |
EP1166307B1 true EP1166307B1 (de) | 2003-01-08 |
Family
ID=7903786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00914323A Expired - Lifetime EP1166307B1 (de) | 1999-04-07 | 2000-04-07 | Elektromagnetisches relais |
Country Status (6)
Country | Link |
---|---|
US (1) | US6531939B1 (de) |
EP (1) | EP1166307B1 (de) |
JP (1) | JP2002541622A (de) |
DE (2) | DE19915691A1 (de) |
ES (1) | ES2189745T3 (de) |
WO (1) | WO2000060625A1 (de) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3742405A (en) | 1972-03-06 | 1973-06-26 | Trw Inc | Small high current dc relay structure |
CA978577A (en) | 1975-06-18 | 1975-11-25 | Rodney Hayden | Obturator structure for silent automotive relay |
CA1022971A (en) * | 1975-06-18 | 1977-12-20 | Rodney Hayden | Electromechanical switching device |
GB1554423A (en) | 1975-06-18 | 1979-10-24 | Trw Inc | Switching devices |
US4064470A (en) * | 1975-06-20 | 1977-12-20 | Trw Inc. | Obturator structure for silent automotive relay |
US4564828A (en) * | 1984-05-14 | 1986-01-14 | American Zettler, Inc. | Electromagnetic relay |
DE3630371A1 (de) * | 1986-09-05 | 1988-03-10 | Siemens Ag | Elektromagnetisches kleinschaltrelais |
DE3640737A1 (de) * | 1986-11-28 | 1988-06-09 | Bosch Gmbh Robert | Elektromagnetisches relais |
US5155458A (en) * | 1991-11-04 | 1992-10-13 | Gamble John G | Normally closed AC relay |
-
1999
- 1999-04-07 DE DE19915691A patent/DE19915691A1/de not_active Ceased
-
2000
- 2000-04-07 US US09/958,185 patent/US6531939B1/en not_active Expired - Fee Related
- 2000-04-07 DE DE50001047T patent/DE50001047D1/de not_active Expired - Lifetime
- 2000-04-07 WO PCT/IB2000/000424 patent/WO2000060625A1/de active IP Right Grant
- 2000-04-07 EP EP00914323A patent/EP1166307B1/de not_active Expired - Lifetime
- 2000-04-07 ES ES00914323T patent/ES2189745T3/es not_active Expired - Lifetime
- 2000-04-07 JP JP2000610030A patent/JP2002541622A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2000060625A1 (de) | 2000-10-12 |
DE50001047D1 (de) | 2003-02-13 |
DE19915691A1 (de) | 2001-08-09 |
EP1166307A1 (de) | 2002-01-02 |
US6531939B1 (en) | 2003-03-11 |
JP2002541622A (ja) | 2002-12-03 |
ES2189745T3 (es) | 2003-07-16 |
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