EP0777248B1 - Relais électromagnétique et procédé d'ajustage du relais électromagnétique - Google Patents

Relais électromagnétique et procédé d'ajustage du relais électromagnétique Download PDF

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Publication number
EP0777248B1
EP0777248B1 EP96118334A EP96118334A EP0777248B1 EP 0777248 B1 EP0777248 B1 EP 0777248B1 EP 96118334 A EP96118334 A EP 96118334A EP 96118334 A EP96118334 A EP 96118334A EP 0777248 B1 EP0777248 B1 EP 0777248B1
Authority
EP
European Patent Office
Prior art keywords
spring
zone
electromagnetic relay
armature
load current
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
EP96118334A
Other languages
German (de)
English (en)
Other versions
EP0777248A2 (fr
EP0777248A3 (fr
Inventor
Wolfgang Hoffmann
André Dr. Körner
Maik Zimmer
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0777248A2 publication Critical patent/EP0777248A2/fr
Publication of EP0777248A3 publication Critical patent/EP0777248A3/fr
Application granted granted Critical
Publication of EP0777248B1 publication Critical patent/EP0777248B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0087—Welding switch parts by use of a laser beam

Definitions

  • the invention relates to an electromagnetic relay according to the preamble of claim 1 and a method for adjusting the starting voltage of the electromagnetic relay.
  • a relay and a method of the aforementioned type are known from EP 0 281 950 A1.
  • the relay described therein has an essentially L-shaped yoke, which can surround a winding 4 on two sides.
  • At one end of the L-shaped yoke is an armature, to which a flat spring is attached, which can serve both as a switch contact spring and as a return spring of the armature.
  • a load current connection terminal is provided which has a spring fixing area which is firmly connected to the flat form spring.
  • the spring fixing area has a section which extends from the area adjacent to the yoke leg around the end of the armature.
  • This section of the spring fixing area which extends around the end of the armature and ends in the area of the armature, is surrounded by sections of the flat form spring which are firmly connected to it.
  • the flat form spring can also be bent in this area in such a way that the pull-in voltage of the relay can be changed.
  • Another relay is known from DE 42 43 852 C2, a method for adjusting the starting voltage in such a relay being described in DE 42 43 854 C2.
  • the switch contact spring has a resilient connecting element which is displaced on a section of a connecting tongue by means of an adjusting plunger until the relay armature picks up when the intended tension is applied. Once this has taken place, the connecting element is fixed on the section of the connecting tongue by means of laser welding.
  • This method is very complex since not only a costly laser system, but also a precisely working optical deflection device is required to control the laser beam and to control it
  • the bias can advantageously be achieved by simply bending the spring fixing area relative to the connection area of the load current connection terminal and relative to the yoke the flat spring and thus the strength of the restoring spring force on the armature can be changed, whereby the pull-in voltage of the relay can be influenced in a simple manner.
  • connection area of the load current connection terminal can advantageously be designed as a flat plug.
  • a method for adjusting the tightening voltage is described in claim 5. It is particularly advantageous that this method is technically particularly simple, that the adjustment is carried out particularly quickly and that the adjustment can be carried out on the relay which has already been assembled.
  • Another advantage is that after the relay has been adjusted, it is guaranteed to pick up at the intended tightening voltage. As a result, the range of the pull-in voltages of all relays of one type can be considerably restricted.
  • a type changeover of the production device with a suitably adjustable pull-in voltage can be achieved by simply changing the excitation voltages applied to the relay coils for adjustment.
  • the adjustment device itself can also be quite simple.
  • the spring fixing area is bent relative to the connection area in a simple manner by means of a wedge-shaped adjusting punch or an adjusting punch which carries out a rotation.
  • FIG. 1 shows a relay according to the invention immediately before the tightening voltage is adjusted.
  • the relay consists of a base plate (1) on which a magnetic coil (2) is arranged. Around two sides of the magnetic coil (2) there is an approximately L-shaped yoke (3) which is riveted to the magnetic core (4).
  • a section of the armature (5) rests on an end face of the yoke (3).
  • the armature (5) is held by a flat form spring (6) with which it is mechanically connected (riveted in this exemplary embodiment). Bent end sections (7) of the flat form spring (6) support the armature (5) against the yoke (3).
  • the flat form spring (6) also serves as a switch contact spring and as a return spring for the armature (5). It therefore carries two switch contacts (8a, 8b), one of which (8a) is in contact with the normally closed contact (9) and the other is opposite the normally open contact (10).
  • connection terminals connected to the contacts (8a, 8b, 9, 10) cannot be seen in FIG. 1, since they are designed as flat plugs which are passed through the side of the base plate (1) not shown in FIG. 1.
  • the bias of the return spring (also formed by the flat spring (6)) changes when the spring fixing area (11a) is shifted. This is done here by bending the spring fixing area (11a) by means of an adjusting plunger (12). If, for example, the spring fixing area (11a) is bent in the direction of the arrow (13), the restoring force of the flat form spring (6) on the armature (5) is reduced and the required minimum tightening tension shifts to lower values.
  • the actual adjustment process now proceeds as follows.
  • the relay is in mechanical abutment against a stop (14) and is also held by means of mechanical locking means (15).
  • the relay coil is acted on (not shown in the figure) by the intended pull-in voltage and the connection terminals connected to the switch contact spring (flat form spring (6)) and the normally open contact (10) are connected to a current or resistance measuring device which detects the presence of the switch contact (8b ) registered at the make contact (10) and thus the successful tightening of the relay.
  • the wedge-shaped adjusting punch (12) now bends the spring fixing area (11a) until the relay picks up due to the decreasing preload of the flat form spring (6).
  • This adjustment process can be carried out fully automatically and very quickly, so that it is suitable for adjusting relays manufactured in very large numbers, since it does not increase the cycle times of relay production.
  • FIG. 2 illustrates the structure of the relay according to the invention on the basis of another view and shows further advantageous features.
  • the configuration of the load current connection terminal (11) is particularly clear here.
  • the flat form spring (6) is firmly connected to the load current connection terminal (11), specifically by means of a soldered or welded connection (16).
  • the load current connection terminal (11) forms a flat plug (17).
  • the spring fixing area (11a) and the connection area (11b) are separated from one another by a slot-shaped recess (18), which simplifies the bending of the spring fixing area (11a) by means of the adjusting stamp (12).
  • An embossing (19) serves as a predetermined bending point and ensures that the bending takes place in a defined manner. The formation of the slot as a closed slot ensures little springback when bending the load current connection terminal (11).
  • Electromagnetic relay and method for adjusting the pull voltage of the electromagnetic relay are Electromagnetic relay and method for adjusting the pull voltage of the electromagnetic relay

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)

Claims (7)

  1. Relais électromagnétique, qui est agencé sous la forme d'un relais à armature battante comportant une culasse (3) et une armature (5), dans lequel l'armature (5) est reliée à un ressort de forme plate (6), qui est agencé d'un seul tenant aussi bien en tant que ressort de contact de commutation que ressort de rappel de l'armature (5), et qui est relié mécaniquement et électriquement à une borne (11) de raccordement du courant de charge, dans lequel la borne (11) de raccordement du courant de charge possède une partie (11a) de fixation du ressort, qui s'étend le long d'une partie de la culasse (30), et une partie de raccordement (11b), et dans lequel la partie (11a) de fixation du ressort et la partie de raccordement (11b) de la borne (11) de raccordement du courant de charge sont agencées de manière à être flexibles l'une par rapport à l'autre, caractérisé en ce que la partie (11a) de fixation du ressort comporte, sur son côté tourné à l'opposé de l'armature (5), une extrémité libre telle que pour l'ajustement de la tension d'attraction du relais, un poinçon d'ajustement (12) peut être inséré entre l'armature (3) et l'extrémité libre de la partie (11a) de fixation du ressort.
  2. Relais électromagnétique selon la revendication 1, caractérisé en ce que la partie de raccordement (11b) est agencée sous la forme d'un connecteur plat (17).
  3. Relais électromagnétique selon la revendication 1, caractérisé en ce que la partie (11a) de fixation du ressort comporte une moulure (19).
  4. Relais électromagnétique selon la revendication 1, caractérisé en ce que la borne (11) de raccordement du courant de charge comporte un évidement en forme de fente (18) entre la partie (11a) de fixation du ressort et la partie de raccordement (11b).
  5. Procédé pour ajuster la tension d'attraction dans un relais électromagnétique selon la revendication 1, caractérisé par les étapes opératoires suivantes :
    1.) on fixe le relais électromagnétique dans un dispositif d'ajustement.
    2.) on applique la tension d'attraction prévue aux bornes de la bobine magnétique (2) et on relie les bornes du contact de travail (10) et du ressort mobile de contact de commutation à un dispositif de mesure du courant ou de la résistance.
    3.) à l'aide d'un poinçon d'ajustement (12), on coude l'extrémité libre de la partie (11a) de fixation du ressort de la borne de raccordement du courant de charge par rapport à la partie de raccordement (11b) et par rapport à la culasse (3) au point que la bobine magnétique (2) attire l'armature (5) et que le contact mobile de commutation (8b) est relié électriquement au contact de travail (10).
  6. Procédé selon la revendication 5, caractérisé en ce que le poinçon d'ajustement (12) est agencé en forme de coin.
  7. Procédé selon la revendication 5, caractérisé en ce que le poinçon d'ajustement exécute un mouvement de rotation, dont l'axe de rotation est situé approximativement dans le prolongement de la moulure (19).
EP96118334A 1995-11-30 1996-11-15 Relais électromagnétique et procédé d'ajustage du relais électromagnétique Expired - Lifetime EP0777248B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19544626 1995-11-30
DE19544626A DE19544626C2 (de) 1995-11-30 1995-11-30 Elektromagnetisches Relais und Verfahren zur Justierung der Anzugsspannung des elektromagnetischen Relais

Publications (3)

Publication Number Publication Date
EP0777248A2 EP0777248A2 (fr) 1997-06-04
EP0777248A3 EP0777248A3 (fr) 1998-09-23
EP0777248B1 true EP0777248B1 (fr) 2004-03-31

Family

ID=7778797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96118334A Expired - Lifetime EP0777248B1 (fr) 1995-11-30 1996-11-15 Relais électromagnétique et procédé d'ajustage du relais électromagnétique

Country Status (4)

Country Link
US (1) US5864268A (fr)
EP (1) EP0777248B1 (fr)
DE (2) DE19544626C2 (fr)
ES (1) ES2217296T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100369176C (zh) * 2005-01-20 2008-02-13 厦门宏发电声有限公司 一种电磁继电器复原簧片及其动作电压的校正方法
US20080287808A1 (en) * 2006-09-12 2008-11-20 The General Hospital Corporation Apparatus, probe and method for providing depth assessment in an anatomical structure
CN102592889B (zh) * 2012-03-07 2014-05-14 厦门宏发汽车电子有限公司 适合自动生产和导电性能可靠的电磁继电器及其装配方法
CN104538250B (zh) * 2015-02-03 2016-08-24 佛山市川东磁电股份有限公司 一种磁力开关

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816364B2 (de) * 1968-12-21 1973-11-15 Westfaelische Metall Industrie Kg, Hueck & Co, 4780 Lippstadt Elektromagnetisches Relais, ins besondere fur Kraftfahrzeuge
DE3235714A1 (de) * 1982-09-27 1984-03-29 Siemens AG, 1000 Berlin und 8000 München Verfahren und vorrichtung zum justieren von kontaktfedern in einem relais
DE3406832C2 (de) * 1983-02-28 1985-11-21 Matsushita Electric Works, Ltd., Kadoma, Osaka Klappankerrelais
EP0281384B1 (fr) * 1987-03-06 1994-06-08 Takamisawa Electric Co., Ltd. Relais électromagnétique avec dispositifs pour amortir le bruit
EP0281950B1 (fr) * 1987-03-13 1992-08-05 Siemens Aktiengesellschaft Relais électromagnétique
DE3841667C1 (fr) * 1988-12-10 1990-02-01 Robert Bosch Gmbh, 7000 Stuttgart, De
US5049844A (en) * 1990-05-16 1991-09-17 Beta Mfg. Co. Enclosed electromagnetic relay
US5155458A (en) * 1991-11-04 1992-10-13 Gamble John G Normally closed AC relay
JP2892230B2 (ja) * 1992-08-07 1999-05-17 アンデン株式会社 電磁継電器
DE4243852C1 (de) * 1992-12-23 1994-03-31 Hella Kg Hueck & Co Elektromagnetisches Relais
DE4243854C1 (de) * 1992-12-23 1994-03-31 Hella Kg Hueck & Co Verfahren zum Justieren verschiedener Komponenten eines Relais

Also Published As

Publication number Publication date
DE59610951D1 (de) 2004-05-06
DE19544626A1 (de) 1997-06-05
EP0777248A2 (fr) 1997-06-04
ES2217296T3 (es) 2004-11-01
EP0777248A3 (fr) 1998-09-23
US5864268A (en) 1999-01-26
DE19544626C2 (de) 2002-10-02

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