EP0433633B1 - Relais électromagnétique avec un ressort de retour - Google Patents

Relais électromagnétique avec un ressort de retour Download PDF

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Publication number
EP0433633B1
EP0433633B1 EP90121245A EP90121245A EP0433633B1 EP 0433633 B1 EP0433633 B1 EP 0433633B1 EP 90121245 A EP90121245 A EP 90121245A EP 90121245 A EP90121245 A EP 90121245A EP 0433633 B1 EP0433633 B1 EP 0433633B1
Authority
EP
European Patent Office
Prior art keywords
spring
return spring
relay
contact
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
Application number
EP90121245A
Other languages
German (de)
English (en)
Other versions
EP0433633A2 (fr
EP0433633A3 (en
Inventor
Gerhard Wehrle
Ursula Seitz
Karl Blaschi
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.)
Hengstler GmbH
Original Assignee
Hengstler Bauelemente GmbH
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 Hengstler Bauelemente GmbH filed Critical Hengstler Bauelemente GmbH
Publication of EP0433633A2 publication Critical patent/EP0433633A2/fr
Publication of EP0433633A3 publication Critical patent/EP0433633A3/de
Application granted granted Critical
Publication of EP0433633B1 publication Critical patent/EP0433633B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity

Definitions

  • the invention relates to an electromagnetic relay with a return spring, the relay consisting of a magnetic coil with a pivotably mounted armature as a drive and a contact spring set, and an actuating plunger extending from one end of the armature, which engages with spiral springs for contact actuation, wherein the return spring at the other end of the actuating plunger returns the contact spring set to a rest position, according to the preamble of claim 1 (eg FR-A-2 423 855).
  • the object of the present invention is therefore to develop an electromagnetic relay with a return spring of the type mentioned so that when the contact spring set is actuated via the plunger with the return spring in the area of the drive via the armature, a substantial saving in force is achieved.
  • the return spring as Over-center spring with the features according to the characterizing part of claim 1 is formed.
  • the essence of the invention therefore lies in the fact that when the plunger begins to deflect via the armature, the return spring is deflected in this way; that the restoring force of the restoring spring initially drops.
  • the return spring is connected in parallel with the plunger parallel to the spiral springs of the contact spring set, whereby the movable contact is arranged on the spiral springs and thereby a characteristic curve is achieved where, compared to a conventional return spring as a leaf spring, a substantial saving in force is achieved.
  • the contact spring set is without a return spring without pretension, i.e. in a neutral position with all contacts open.
  • the rest position of the contacts is now generated by means of the return spring in an over-center arrangement.
  • the contact spring set is deflected into a working position, only a decreasing force has to be applied by the armature as the drive.
  • the restoring spring has a characteristic curve such that the greatest restoring force is present at its greatest deflection.
  • the return spring is in this case preferably arranged under pretension with a pre-curvature in a recess in the spring bracket.
  • an actuator for. B. to arrange a set screw, wedge or the like.
  • the relay itself consists, in a manner known per se, of a magnet coil 1 with a pivotably mounted armature 5 as the first drive and a contact spring set 4, an actuating plunger 2 extending from one end of the armature 5, which engages with spiral springs 7 for the driver Contact activation is available.
  • the return spring 3 is arranged at the other end of the actuating plunger 2 and returns the contact spring set 4 with the spiral springs 7 to a rest position in the manner of another drive.
  • the return spring 3 according to FIG. 1 is now designed as an over-center spring, with the load characteristic curve changing very advantageously here.
  • curve 1 shows a force-displacement characteristic field, curve 1 representing the force profile of the spring set 4 with respect to the deflection.
  • the curve 2.1 in FIG. 2 denotes the force-displacement characteristic of a conventional return spring, in particular a leaf spring, it being evident that starting from the beginning of the deflection, a force must be applied increasingly via the armature in order to have such a conventional return spring deflect.
  • the force-displacement characteristic of the return spring 3 according to FIG. 1 is shown with the characteristic curve 2.2 in FIG. 2, an over-center spring being used here. It can be seen that, starting from a rest position, the force applied to the over-center spring first decreases in order to deflect it. Only from the range of a certain deflection does the force required on the return spring 3 increase again in order to deflect it, the greatest return force then being achieved in the area of the greatest deflection, around the contact spring set 4 including the plunger 2 and the armature 5 to put back.
  • FIG. 3 shows a characteristic field with regard to the expenditure of force or the saving of force when using a conventional return spring and a degressive return spring 3 according to FIG. 1, curve 1.1 representing a sum curve which is based on the addition of the force-travel characteristic curve 1 and the curve 2.1 comes from a conventional return spring according to FIG.
  • Curve 1.2 in FIG. 3 represents the force curve when using a degressive return spring 3 in conjunction with a spring set 4, corresponding to the sum of the curves 1 and 2.2 according to FIG. 2.
  • a relay In connection with the saving of force, a relay is implemented with a contact set 4, a considerable saving of force being achieved when the spiral spring 7 is deflected, without other properties in the contact set having to be undone.
  • the return spring 3 is arranged under prestress in a recess 8 of the spring bracket 6, an adjusting screw 9 being provided for adjusting the prestress.
  • the plunger 2 starts from one end of the armature 5 and passes through an armature bore and then penetrates the spiral springs 7 via drivers and rests with its other end on the over-center spring 3.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Cookers (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fire Alarms (AREA)
  • Tumbler Switches (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (3)

  1. Relais électromagnétique comportant un ressort de rappel (3), le relais étant constitué d'une bobine d'excitation (1) comprenant une palette (5) montée pivotante et d'un jeu de lames de contact (4), un poussoir d'actionnement, qui part d'une extrémité de la palette (5), étant en prise avec des lames flexibles par l'intermédiaire d'entraîneurs pour l'actionnement des contacts, le ressort de rappel (3), à l'autre extrémité du poussoir d'actionnement, ramenant le jeu de lames de contact (4) dans une position de repos, caractérisé en ce que le ressort de rappel (3) est réalisé sous forme de lame de ressort à passage de point mort et présente une allure de courbe caractéristique telle que,lors de l'entraînement du relais à l'encontre du ressort de rappel (3), la force nécessaire à la flexion du ressort diminue tout d'abord jusqu'à un minimum puis augmente à nouveau, et atteint sa valeur la plus grande pour la déviation la plus grande.
  2. Relais selon la revendication 1, caractérisé en ce que le ressort de rappel (3) est disposé sous précontrainte et avec un cintrage préalable, dans un évidement (8) du bloc support de lames (6).
  3. Relais selon la revendication 2, caractérisé en ce que,dans le bloc support de lames (6), est disposé un organe de réglage (9), par exemple sous la forme d'une vis, destiné à régler la précontrainte du ressort de rappel (3) monté dans l'évidement (8).
EP90121245A 1989-12-21 1990-11-07 Relais électromagnétique avec un ressort de retour Expired - Lifetime EP0433633B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3942340 1989-12-21
DE3942340A DE3942340A1 (de) 1989-12-21 1989-12-21 Elektromagnetisches relais mit rueckstellfeder

Publications (3)

Publication Number Publication Date
EP0433633A2 EP0433633A2 (fr) 1991-06-26
EP0433633A3 EP0433633A3 (en) 1992-06-03
EP0433633B1 true EP0433633B1 (fr) 1994-07-27

Family

ID=6396054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121245A Expired - Lifetime EP0433633B1 (fr) 1989-12-21 1990-11-07 Relais électromagnétique avec un ressort de retour

Country Status (6)

Country Link
US (1) US5053756A (fr)
EP (1) EP0433633B1 (fr)
AT (1) ATE109306T1 (fr)
DE (2) DE3942340A1 (fr)
DK (1) DK0433633T3 (fr)
ES (1) ES2062262T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19600314C2 (de) * 1996-01-06 1999-02-04 Hengstler Gmbh Relais mit zwangsgeführten Kontaktsätzen
US5717369A (en) * 1996-05-03 1998-02-10 Wilson; Arthur L. Alternating current relay
ES2445990T3 (es) * 2000-01-28 2014-03-06 Elesta Relays Gmbh Relé de seguridad, su uso y dispositivo de conexión con tal relé de seguridad
DE10309596B3 (de) * 2003-03-05 2004-12-30 Matsushita Electric Works (Europe) Ag Relais-Kontaktanordnung
CH698492B1 (de) * 2006-03-20 2009-08-31 Elesta Relays Gmbh Relais.
DE102012017157A1 (de) * 2012-08-30 2014-03-06 Hengstler Gmbh Relais mit modifizierter Kraft-Weg-Kennlinie

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256401A (en) * 1963-04-03 1966-06-14 American Mach & Foundry Spring pile-up electromagnetic relay
DE6750454U (de) * 1968-07-10 1969-01-09 Merk Gmbh Telefonbau Fried Schnappschalter mit einer unter den einfluss einer spannfeder stehenden uebertotpunktfeder
JPS538901B2 (fr) * 1971-09-01 1978-04-01
DE7512499U (de) * 1975-04-18 1977-03-03 E. Haller & Co Relaisfabrik, 7209 Wehingen Relais
GB1576377A (en) * 1978-03-29 1980-10-08 Plessey Co Ltd Electromagnetic relays
NL174779C (nl) * 1978-04-19 1984-08-01 Haller & Co E Contactinrichting voor een elektrisch relais.
DE2817036C2 (de) * 1978-04-19 1983-08-11 E. Haller & Co, 7209 Wehingen Kontaktfederblock für Relais
US4818965A (en) * 1986-06-23 1989-04-04 Siemens Aktiengesellschaft Electromagnetic relay
DE3622794A1 (de) * 1986-07-07 1988-01-21 Bosch Gmbh Robert Schalter, insbesondere fuer mit gleichstrom betriebene handwerkzeugmaschine
US4706056A (en) * 1986-09-11 1987-11-10 American Telephone And Telegraph Company, At&T Bell Laboratories Electrical relay apparatus

Also Published As

Publication number Publication date
EP0433633A2 (fr) 1991-06-26
DE3942340C2 (fr) 1991-11-21
ATE109306T1 (de) 1994-08-15
EP0433633A3 (en) 1992-06-03
DE59006601D1 (de) 1994-09-01
US5053756A (en) 1991-10-01
DK0433633T3 (da) 1994-11-21
ES2062262T3 (es) 1994-12-16
DE3942340A1 (de) 1991-06-27

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