EP0326116B1 - Disposition de contacts pour un relais - Google Patents

Disposition de contacts pour un relais Download PDF

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Publication number
EP0326116B1
EP0326116B1 EP89101289A EP89101289A EP0326116B1 EP 0326116 B1 EP0326116 B1 EP 0326116B1 EP 89101289 A EP89101289 A EP 89101289A EP 89101289 A EP89101289 A EP 89101289A EP 0326116 B1 EP0326116 B1 EP 0326116B1
Authority
EP
European Patent Office
Prior art keywords
contact
spring
bend
prestressing
respect
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
EP89101289A
Other languages
German (de)
English (en)
Other versions
EP0326116A1 (fr
Inventor
Erwin Dipl.-Ing Müller (FH)
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 EP0326116A1 publication Critical patent/EP0326116A1/fr
Application granted granted Critical
Publication of EP0326116B1 publication Critical patent/EP0326116B1/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
    • H01H50/60—Contact arrangements moving contact being rigidly combined with movable part of magnetic circuit
    • 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
    • H01H1/18—Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
    • 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
    • H01H1/20—Bridging contacts
    • H01H1/2083—Bridging contact surfaces directed at an oblique angle with respect to the movement of the bridge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H2047/003—Detecting welded contacts and applying weld break pulses to coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • 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
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/28—Parts movable due to bending of a blade spring or reed

Definitions

  • the invention relates to a contact arrangement for a relay with a contact spring, the spring leg of which is attached at one end and is biased with its free end against a counter-contact element by at least one pretensioning bend extending transversely to its longitudinal direction, the free end in the closed state of contact with a contact piece rests on the mating contact element and is lifted from the mating contact element in the opened state of the contact by an actuating or supporting element, which acts on the contact spring in the region between the pretension bend and the free end of the contact spring by means of a contact edge running transversely to the longitudinal direction of the contact spring.
  • the object of the invention is to develop a contact arrangement of the type mentioned in such a way that the tendency to bounce, which is one of the causes of the welding, is reduced when the contacts are closed and that the opening of welded contacts is facilitated when opening.
  • this object is achieved in that the bend line of the biasing bend of the contact spring runs at an acute angle with respect to the contact edge of the actuating or supporting member.
  • the biasing bend running obliquely to the contact edge or the actuating edge ensures that the spring receives a torsional movement both when the contact is closed and when it is opened, as a result of which a lateral rolling off at the contact point is forced. As a result, the impact energy is partially converted into friction when closing, which leads to a reduction in the tendency to bounce. Due to the oblique preload buckle, the actuating member also asymmetrically engages the contact spring when the contact is opened, as a result of which an additional torsional force also acts on a welded contact point and facilitates tearing open.
  • the contact spring is supported in an area between the oblique bias bend and the contact point on an edge of the armature.
  • an inclined pretensioning kink also in another relay structure, the edge of an actuating or supporting member taking the place of the anchor edge.
  • two or more can be provided instead of the one pre-tensioning buckle. These can then run parallel to one another or also at an angle to one another. Since there must be a moment for a torsion of the spring, it is possible in the case of springs with two pretensioning bends to provide one bend parallel to the support edge and a second bend obliquely to this; However, both kinks can also be attached in the same direction at an angle or in opposite directions at an angle.
  • the angle between the pretension bend and the contact edge should be between 0 and 30 °. Good results have been obtained at an angle of the order of 5 °.
  • the distance of the kink or kinks to the clamping point depends on the geometry of the spring and the desired angle of impact on the counter contact.
  • the size of the wobble of the contact, which results from the deflection and the torsion of the spring, is also important. Therefore, a relatively large overstroke should be provided when closing the contacts.
  • the biasing force with which the spring is biased against the actuator should be about 20 to 30% of the contact force. If it is a counter-contact spring biased against a support plate, this proportion will generally be higher.
  • a contact spring 5 is connected to the armature and carries a contact piece 6 at its free end 5a and cooperates with a mating contact element 7 anchored in the coil former 1 or its contact piece 8.
  • the contact spring 5 is biased in the area between its attachment point 9 on the armature 4 and the free end 5a towards the armature and thus towards the mating contact element 7.
  • This pretension is generated by an obliquely running pretension kink 10, which generates a certain contact force F on the anchor edge 4a.
  • the angle between the contact edge 4a and the pretension bend 10 can be between 0 and 30 °. It is preferably in the range from approximately 5 ° to 10 °.
  • the preload bend 10 causes the contact piece 6 to roll on the contact piece 8 when the contact is closed and when it opens, which leads to a reduction in the bouncing and easier tearing of the contact with slight welding.
  • FIG. 3 and 4 show a further embodiment of a contact arrangement designed according to the invention, the relay system no longer being shown.
  • an armature 14 (which is only shown in part) is coupled to a movable contact spring 15, that is to say it is directly connected or is also actuated via an intermediate element, the contact piece 16 of which cooperates with a contact piece 18 of a mating contact spring 17.
  • the moving contact spring 15 can be more or less rigidly connected to the armature, since it does not require high elasticity. Because in this case the counter contact spring is also 17th elastic, so it can absorb the overstroke of the armature when the contact closes.
  • the counter-contact spring 17 is biased by a bias bias 20 against a support plate 19, wherein it rests on the edge 19a of this support plate in the idle state.
  • the effect of the oblique preload bend is the same as in the example previously described. In this case, however, the preload is higher and almost the same as the contact force. Otherwise, all configuration options of the previous example also apply to the example according to FIGS. 3 and 4.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Springs (AREA)
  • Relay Circuits (AREA)
  • Breakers (AREA)

Claims (7)

  1. Dispositif de contact pour un relais comportant un ressort de contact (5;17), dont la branche (5b) est fixée à une extrémité et est précontrainte, par son extrémité libre (5a), contre un élément de contact antagoniste (5;17) par suite de la présence d'un coude de précontrainte (10;20) qui s'étend transversalement par rapport à sa direction longitudinale, et dans lequel, lorsque le contact est à l'état fermé, l'extrémité libre (5a) s'applique par une pièce de contact (6;18) sur l'élément de contact antagoniste (7,8; 15,16) et, lorsque le contact est à l'état ouvert, est écarté, par un élément d'actionnement ou d'appui (4;19), de l'élément de contact antagoniste (7;15), qui attaque, au moyen d'une arête d'application (4a), qui s'étend transversalement par rapport à la direction longitudinale du ressort de contact (5;17), contre le ressort de contact dans la zone située entre le coude de précontrainte (10;20) et l'extrémité libre (5a) du ressort de contact, caractérisé par le fait que la ligne du coude de précontrainte (10;20) du ressort de contact (5;17) fait un angle aigu (α) par rapport à l'arête d'application (4a) de l'élément d'actionnement ou d'application (4;19).
  2. Dispositif de contact suivant la revendication 1, caractérisé par le fait que l'élément d'actionnement ou d'appui (4) attaque la branche (5b) du ressort entre le coude de précontrainte (10) et la pièce de contact (6).
  3. Dispositif de contact suivant la revendication 2, caractérisé par le fait que l'élément d'actionnement est une armature qui est fixée à l'extrémité serrée (5c) du ressort de contact (5) et contre l'arête d'application (4a) de laquelle s'applique la branche du ressort lorsque le contact est à l'état ouvert.
  4. Dispositif de contact suivant l'une des revendications 1 à 3, caractérisé par le fait que le coude de précontrainte (10) fait un angle compris entre 0° et 30° par rapport à l'arête d'application (4a) de l'élément d'actionnement.
  5. Dispositif de contact suivant la revendication 4, caractérisé par le fait que le coude de précontrainte fait un angle égal approximativement à 5° par rapport à l'arête d'application (4a).
  6. Dispositif de contact suivant l'une des revendications 1 à 5, caractérisé par le fait qu'il est prévu plusieurs coudes de précontrainte, qui s'étendent obliquement dans le même sens ou en sens opposé par rapport à l'arête d'application.
  7. Dispositif de contact suivant la revendication 1 à 6, caractérisé par le fait que le ressort de contact (17) est un ressort de contact antagoniste, qui, à l'état ouvert, est précontraint contre une plaque d'appui (19).
EP89101289A 1988-01-29 1989-01-25 Disposition de contacts pour un relais Expired - Lifetime EP0326116B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3802686 1988-01-29
DE3802686 1988-01-29

Publications (2)

Publication Number Publication Date
EP0326116A1 EP0326116A1 (fr) 1989-08-02
EP0326116B1 true EP0326116B1 (fr) 1993-04-14

Family

ID=6346261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89101289A Expired - Lifetime EP0326116B1 (fr) 1988-01-29 1989-01-25 Disposition de contacts pour un relais

Country Status (5)

Country Link
US (1) US4937544A (fr)
EP (1) EP0326116B1 (fr)
JP (1) JP2663983B2 (fr)
DE (1) DE58904030D1 (fr)
ES (1) ES2041846T3 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2018344C (fr) * 1989-12-07 1995-12-12 Yoichi Yokoyama Contacts de relais electromagnetique resistants a une liaison par fusion
DE9013221U1 (de) * 1990-09-18 1992-01-23 Siemens AG, 80333 München Elektromagnetisches Leistungsrelais mit Betätigungsschieber
US5260677A (en) * 1991-11-04 1993-11-09 Gamble John G Snap-acting normally closed AC relay
US5155458A (en) * 1991-11-04 1992-10-13 Gamble John G Normally closed AC relay
IT1257428B (it) * 1992-05-20 1996-01-16 Guido Guidi Rele' perfezionato ad appoggio intermedio per l'impiego particolarmente in autoveicoli
US5363669A (en) * 1992-11-18 1994-11-15 Whirlpool Corporation Defrost cycle controller
DE19544624C1 (de) * 1995-11-30 1997-01-02 Hella Kg Hueck & Co Elektromagnetisches Klappankerrelais
US5872497A (en) * 1996-10-23 1999-02-16 Physio-Control Corporation High energy transfer relay
JP2006294459A (ja) 2005-04-12 2006-10-26 Nec Tokin Corp 電磁継電器
JP5448693B2 (ja) * 2009-10-05 2014-03-19 富士通コンポーネント株式会社 電磁継電器
CN109817492A (zh) * 2019-02-15 2019-05-28 厦门城市职业学院（厦门市广播电视大学） 一种减小触点弹跳的继电器
CN111710564B (zh) * 2020-06-19 2022-05-03 哈尔滨工业大学 一种折弯金属结合填锡的小型密封电磁继电器簧片
BE1030869B1 (de) * 2022-09-12 2024-04-09 Phoenix Contact Gmbh & Co Verfahren zur Ansteuerung eines elektromechanischen Schaltelements

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321097B2 (fr) * 1972-12-30 1978-06-30
AU499732B2 (en) * 1974-08-15 1979-05-03 Standard Telephones & Cables Pty. Ltd Electrical contacts
JPS5815893B2 (ja) * 1978-11-01 1983-03-28 オムロン株式会社 電磁継電器
CH649170A5 (de) * 1979-04-18 1985-04-30 Rausch & Pausch Magnetankerhalterung in einem relais.
JPS5657232A (en) * 1979-10-15 1981-05-19 Matsushita Electric Works Ltd Relay
JPS5740239U (fr) * 1980-08-19 1982-03-04
DE3224468A1 (de) * 1982-06-30 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Relais mit brueckenkontaktfeder
DE8234360U1 (de) * 1982-12-07 1983-06-09 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Relais
DE8235283U1 (de) * 1982-12-15 1983-06-09 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Relais

Also Published As

Publication number Publication date
DE58904030D1 (de) 1993-05-19
US4937544A (en) 1990-06-26
JPH01225028A (ja) 1989-09-07
JP2663983B2 (ja) 1997-10-15
EP0326116A1 (fr) 1989-08-02
ES2041846T3 (es) 1993-12-01

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