EP0528833B1 - Systeme commutateur electromagnetique et son procede de production - Google Patents

Systeme commutateur electromagnetique et son procede de production Download PDF

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Publication number
EP0528833B1
EP0528833B1 EP91908243A EP91908243A EP0528833B1 EP 0528833 B1 EP0528833 B1 EP 0528833B1 EP 91908243 A EP91908243 A EP 91908243A EP 91908243 A EP91908243 A EP 91908243A EP 0528833 B1 EP0528833 B1 EP 0528833B1
Authority
EP
European Patent Office
Prior art keywords
core
yoke
coil former
armature
contact
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
EP91908243A
Other languages
German (de)
English (en)
Other versions
EP0528833A1 (fr
Inventor
Horst Dipl. Ing. Hendel
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0528833A1 publication Critical patent/EP0528833A1/fr
Application granted granted Critical
Publication of EP0528833B1 publication Critical patent/EP0528833B1/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
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/34—Means for adjusting limits of movement; Mechanical means for adjusting returning force
    • 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
    • H01H1/34—Contacts characterised by the manner in which co-operating contacts engage by abutting with provision for adjusting position of contact relative to its co-operating contact
    • 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
    • H01H2050/446—Details of the insulating support of the coil, e.g. spool, bobbin, former

Definitions

  • the invention relates to an electromagnetic switching system with a coil body made of insulating material carrying a winding, a core arranged in an axial recess of the coil body, which forms a pole face with a pole-side end and is fixedly connected to a yoke with a yoke-side end, a bearing mounted on the yoke, with the pole face of the core forming an armature working gap, at least one movable contact element operatively connected to the armature and at least one mating contact element fastened to a pole-side flange of the coil body.
  • the invention also relates to a method for producing such a switching system.
  • Such switching systems in the form of electromagnetic relays are known for example from DE-A-1 639 295 or FR-A-2 341 935.
  • the contact force is determined by the contact contact. This is the additional way that the armature can still travel towards the pole face up to the stop after the contacts have closed. This contact movement and thus the contact force has hitherto been set by so-called core pole adjustment.
  • the core is pressed into the coil body and with its yoke-side end into a yoke recess until it has reached a predetermined dimension with respect to the mating contact elements. If this push-in for adjustment takes place before the armature and the movable contact elements are put in place, the adjustment can only be carried out on the basis of the dimensions determined, with tolerances are difficult to control. However, if the core pole adjustment is carried out with the armature attached by pressing the core in over the armature, the armature can be deformed in an undesirable manner.
  • the coil body connected to the yoke can retract due to the shrinkage in the direction of the yoke-side end, as a result of which the mating contact elements are also further removed from the movable contact elements, that is to say the contact force decreases. This affects the reliability of the switching system.
  • the object of the invention is to provide an electromagnetic switching system of the type mentioned, in which shrinkage of the coil body material practically does not change the adjustment between the core pole face and mating contact elements and thus does not impair the contact, and in which both simple and stable attachment between the core and the yoke as well as an adjustment of the contact can be carried out easily.
  • the invention is also intended to provide a method for advantageously producing and adjusting such a switching system.
  • this object is achieved with a switching system of the type mentioned in that retaining lugs are stamped on the core in its pole-side end section, which penetrate into the material of the coil former and secure the core and the coil former against relative axial displacement.
  • the coil former is not leaned against or connected to the yoke with its end facing away from the armature and the pole face, as is the case in conventional systems, but rather a connection between the core and the coil former is made in the region of its ends on the pole side.
  • This non-positive and / or positive connection between the core and the bobbin thus has no or almost no axial offset to the mating contact elements, so that distortion in the plastic of the bobbin does not change the assignment between the core pole face and the mating contact elements. If the coil body shrinks, there is at most a free space between the yoke-side end of the coil body and the yoke, but this has no effect on the contact with the contact.
  • the assignment between the core pole face and the mating contact elements does not depend on the attachment between the core and the yoke, this attachment can be carried out without regard to the adjustment before the armature is installed with a view to the best possible tight fit.
  • the contact can be adjusted after the armature has been put in place by simply moving the coil body on the core, the displacement forces between the iron of the core and the plastic of the coil body being relatively small, so that there is no risk of the armature assembly being deformed when the contact is adjusted given is.
  • the fixed connection sought according to the invention can be achieved at the pole-side end.
  • the core is fixed in the coil body, for example, via three or four retaining lugs distributed over the circumference of the core, which initially grip the plastic of the coil body in a force-fitting manner, the connection increasingly becoming a positive connection due to the cold flow of the plastic.
  • the transition from positive to positive locking is affected by heat, such as. B. occurs by heating the coil during operation, still favored.
  • a further advantage of the adjustment shift of the entire magnet system compared to the coil body is that the change in gearing without translation is exactly the same as the amount of displacement of the magnet system, which enables a high accuracy of the adjustment.
  • the coil body is supported on the yoke-side coil flange, for example, by contact pins which penetrate the yoke.
  • Figure 1 shows in longitudinal section an electromagnetic relay with a coil body 1, which has two flanges 2 and 3, between which a winding 4 is applied.
  • a core 5 with a pole-side end 5a and a yoke-side end 5b is arranged in the axial bore la of the coil former.
  • the pole-side end 5a forms a pole face 6, while the yoke-side end 5b is pressed into a recess 7a of a yoke 7 and is fixed with notches 8.
  • the yoke is bent at an angle; the leg connected to the core is designated 7b, while a second leg 7c extends parallel to the coil axis and forms a bearing for an armature 9.
  • This armature 9 forms a working air gap with the pole face 6.
  • a movable contact spring 10 is connected to the armature 9 and carries a contact piece 11.
  • a fixed mating contact element 12 with a is in the coil flange 2 Contact piece 13 attached.
  • This contact movement a must be set to a predetermined value by suitable adjustment. It must not change inappropriately during the life of the relay, for example due to the coil body shrinking. If, for example, as is often the case, the coil flange 3 is held in firm connection with the yoke leg 7b, the counter-contact element 12 could move away from the contact spring 10 by shrinking the coil former in the direction of the yoke leg 7b and thus reduce the contact.
  • the core 5 in the pole-side end section 5a has, for example, four retaining lugs 14 distributed over the circumference, which are offset by 90 °, which are located in the area or in the vicinity of the coil flange 2 dig into the bobbin 1. They thus cause a fixation between the core and the bobbin in the area of the coil flange 2, i. H. with a minimal axial distance from the mating contact element 12. If the coil body shrinks, it will at most move away from the yoke leg 7b with the flange 3.
  • the magnet system consisting of core 5, yoke 7 and armature 9 is retained in a fixed axial assignment to the contact elements.
  • the core 5 When installing the relay, the core 5 is first inserted into the wound bobbin 1 and is independent of the Contact adjustment pressed into the yoke recess 7a and scored. In this case, the tool can be pressed directly onto the pole face 6 without an intermediate anchor, as a result of which a good tight fit between the core and the yoke and a good magnetic transition are ensured. After the armature and the contact elements have been installed, the contact a can then be adjusted. For this purpose, the magnet system can be moved in the axial direction relative to the coil body 1 by pressing on the core via the armature 9. The coil former is supported by contact pins 15, which engage the flange 3 through bores 16 of the yoke.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Vehicle Body Suspensions (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Burglar Alarm Systems (AREA)

Claims (5)

  1. Système de commutation électromagnétique comportant
    - un corps de bobine (1) portant un enroulement (4) et réalisé en un matériau isolant,
    - un noyau (5), disposé dans un évidement axial (1a) du corps de bobine (1) et qui forme, avec une extrémité (5a) située du côté du pôle, une surface polaire (6) et est raccordé de façon fixe à une extrémité (5b), située du côté culasse, à une culasse (7),
    - une armature (9), montée sur la culasse (7) et formant un entrefer de travail avec la surface polaire (6) du noyau (5),
    - au moins un élément de contact mobile (10), qui coopère activement avec l'armature (9), et
    - au moins un élément de contact antagoniste (12), qui est fixé sur une bride (2), située du côté du pôle, du corps de bobine (1),
    caractérisé par le fait que sur le noyau (5) sont formés par gaufrage, dans une section d'extrémité (5a) située du côté du pôle, des nez de retenue (14), qui pénètrent dans le matériau du corps de bobine (1) et bloquent le noyau (5) et le corps de bobine (1) contre tout déplacement axial relatif.
  2. Système de commutation suivant la revendication 1, caractérisé par le fait que plusieurs nez de retenue (14) sont disposés sur le noyau (5) en étant répartis sur la périphérie.
  3. Procédé pour fabriquer un système de commutation suivant la revendication 1 ou 2, caractérisé par le fait qu'on enfiche le noyau (5) dans le corps de bobine enroulé (1), qu'on l'enfonce par son extrémité (5a), située du côté du pôle, dans le corps de bobine et qu'on l'enfonce simultanément par son extrémité (5b), située du côté de la culasse, dans un évidement (7a) de la culasse (7), et qu'ensuite seulement on met en place l'armature (9) équipée de l'élément de contact mobile (10).
  4. Procédé suivant la revendication 3, caractérisé par le fait qu'après la mise en place de l'armature (9) équipée de l'élément de contact mobile (10), on déplace le corps de bobine (1), qui porte l'élément de contact antagoniste (12), dans la direction axiale par rapport à l'unité formée par le noyau (5) et la culasse (7).
  5. Procédé suivant la revendication 4, caractérisé par le fait que, lors du déplacement entre le noyau (5) et le corps de bobine (1), le corps de bobine prend appui par l'intermédiaire de tiges d'application (15), qui sont guidées dans des évidements (16) de la culasse.
EP91908243A 1990-05-14 1991-05-02 Systeme commutateur electromagnetique et son procede de production Expired - Lifetime EP0528833B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP90109037 1990-05-14
EP90109037 1990-05-14
PCT/EP1991/000836 WO1991018408A1 (fr) 1990-05-14 1991-05-02 Systeme commutateur electromagnetique et son procede de production

Publications (2)

Publication Number Publication Date
EP0528833A1 EP0528833A1 (fr) 1993-03-03
EP0528833B1 true EP0528833B1 (fr) 1994-08-03

Family

ID=8203976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91908243A Expired - Lifetime EP0528833B1 (fr) 1990-05-14 1991-05-02 Systeme commutateur electromagnetique et son procede de production

Country Status (7)

Country Link
US (1) US5332985A (fr)
EP (1) EP0528833B1 (fr)
JP (1) JPH05506957A (fr)
AT (1) ATE109592T1 (fr)
DE (1) DE59102444D1 (fr)
ES (1) ES2057888T3 (fr)
WO (1) WO1991018408A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10110964C2 (de) * 2000-06-09 2002-10-31 Ems Chemie Ag Thermoplastische Mehrschichtverbunde

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322648C1 (de) * 1993-07-07 1994-08-18 Siemens Ag Gerät mit Vierbeinspule
US5905422A (en) * 1996-11-26 1999-05-18 Siemens Electromechanical Components, Inc. Relay adjustment structure
DE19726055C1 (de) * 1997-06-19 1998-11-12 Siemens Ag Elektromagnetsystem und Verfahren zum Fügen von Kern und Joch in einem solchen System
DE19747167C1 (de) * 1997-10-24 1999-04-29 Siemens Ag Elektromagnetisches Relais
KR101014987B1 (ko) * 2002-11-15 2011-02-16 타이코 일렉트로닉스 에이엠피 게엠베하 릴레이용 압출 코팅한 자기 시스템
JP4803206B2 (ja) * 2008-04-24 2011-10-26 パナソニック電工株式会社 リレー用電磁石
JP5246145B2 (ja) * 2009-11-26 2013-07-24 アンデン株式会社 電磁継電器の接点接触圧調整方法
JP6037730B2 (ja) * 2012-08-31 2016-12-07 富士通コンポーネント株式会社 電磁継電器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1200321A (en) * 1967-01-16 1970-07-29 Lucas Industries Ltd Electromagnetic relays
DE2226061A1 (de) * 1972-05-29 1973-12-13 Harting Elektro W Elektromagnet
DE2705961A1 (de) * 1976-02-19 1977-08-25 Lucas Industries Ltd Elektromagnetisches relais
DE3148052A1 (de) * 1981-12-04 1983-06-09 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisches relais und verfahren zu seiner herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10110964C2 (de) * 2000-06-09 2002-10-31 Ems Chemie Ag Thermoplastische Mehrschichtverbunde

Also Published As

Publication number Publication date
WO1991018408A1 (fr) 1991-11-28
DE59102444D1 (de) 1994-09-08
JPH05506957A (ja) 1993-10-07
US5332985A (en) 1994-07-26
EP0528833A1 (fr) 1993-03-03
ES2057888T3 (es) 1994-10-16
ATE109592T1 (de) 1994-08-15

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