WO2000007204A2 - Relais electromagnetique - Google Patents

Relais electromagnetique Download PDF

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Publication number
WO2000007204A2
WO2000007204A2 PCT/DE1999/002322 DE9902322W WO0007204A2 WO 2000007204 A2 WO2000007204 A2 WO 2000007204A2 DE 9902322 W DE9902322 W DE 9902322W WO 0007204 A2 WO0007204 A2 WO 0007204A2
Authority
WO
WIPO (PCT)
Prior art keywords
armature
contact
spring
contact spring
relay according
Prior art date
Application number
PCT/DE1999/002322
Other languages
German (de)
English (en)
Other versions
WO2000007204A3 (fr
Inventor
Michael Dittmann
Jens Heinrich
Rainer Vogel
Titus Ziegler
Original Assignee
Tyco Electronics Logistics 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
Priority claimed from DE1999113903 external-priority patent/DE19913903C1/de
Application filed by Tyco Electronics Logistics Ag filed Critical Tyco Electronics Logistics Ag
Publication of WO2000007204A2 publication Critical patent/WO2000007204A2/fr
Publication of WO2000007204A3 publication Critical patent/WO2000007204A3/fr

Links

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
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/40—Contact mounted so that its contact-making surface is flush with adjoining insulation
    • H01H1/403—Contacts forming part of a printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/548—Contact arrangements for miniaturised relays
    • 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
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/021—Bases; Casings; Covers structurally combining a relay and an electronic component, e.g. varistor, RC circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature
    • H01H51/229—Blade-spring contacts alongside armature

Definitions

  • the invention relates to an electromagnetic relay, which has a magnet system, an armature, a contact spring and movable and fixed contacts.
  • the contact spring is punched out of metal strips and overmolded with plastic.
  • the movable contacts are attached to the stamped metal strip by resistance or laser welding.
  • the conventional relays have the disadvantage that punching metal strips causes high tool costs.
  • the use of metal tape requires little flexibility with regard to the spring characteristics. Because of the complex punching tools, the shape of the springs is also very limited. In addition, the metal strips warp during punching; a problem that is all the more serious the thinner the tapes used in increasingly miniaturized relays.
  • the subsequent welding process also leads to a further deformation of the springs. This results in a large spread in the dimensions of the relay springs, which results in a high probability of failure of the relays and thus leads to a high scrap in production. After assembling the relays, these are z. B. assembled by reflow soldering.
  • Thermoplastic materials commonly used in overmolding have insufficient thermal stability compared to the temperatures that occur during reflow soldering. To improve the thermal load capacity, highly heat-resistant plastics are therefore used, which are extremely expensive.
  • the aim of the present invention is therefore to provide a relay in which the contact spring while avoiding high tooling and manufacturing costs and at the same time minimizing of the spread in the spring dimensions. In addition, an increased heat resistance of the springs is sought.
  • the invention consists in an electromagnetic relay which has a coil, a core passing through the coil and an elongated armature which forms at least one working air gap with the core. Furthermore, the relay has at least one band-shaped contact spring which rests on the armature and is connected to it.
  • the contact spring has at least one movable spring arm which carries a movable contact. Furthermore, the relay has at least one fixed contact which interacts with the movable contact and is fastened on an insulating support.
  • the contact spring is characterized in that it is formed by a flexible printed circuit board made of insulating material.
  • the relay By forming the contact spring according to the invention from a flexible printed circuit board, the relay can be manufactured by using standard technologies and materials of printed circuit board manufacture without expensive special stamping tools. Avoiding metal punches ensures that the springs retain their shape more accurately.
  • thermosetting plastics which are dimensionally stable up to temperatures above 200 ° C. are used particularly advantageously. This makes it easy to achieve thermal stability against the temperatures of around 200 ° C. or higher that occur during reflow soldering.
  • an advantageous embodiment of the invention is that the movable contacts as selective PCB surfaces coated with contact material are formed.
  • Such selective coating of the printed circuit board can be done, for example, by electroplating. Because the contacts are not welded onto the contact springs, they cannot warp so easily, which greatly reduces the spread in the spring dimensions.
  • the movable contacts can be designed as solid contacts that are pressed or riveted into the contact spring. It is also possible to attach the movable contacts to the contact spring using conductive adhesive or solder. In both cases, welding can be omitted in particular.
  • one-layer or multi-layer flexible printed circuit boards can advantageously be used, depending on the availability and required spring characteristics.
  • an embodiment is particularly advantageous in which the armature is designed as a rocker armature and in which the armature spring carrying the armature and the contact spring are formed in one piece from a spring which rests on a support fastened to the base element. The distances between movable and fixed contacts and the contact lift can thus be easily adjusted by the thickness of the support.
  • the spring stiffness of the armature spring can be adjusted in a particularly simple and thus advantageous manner by depositing the flexible printed circuit board with spring strips.
  • the use of preformed spring semi-finished products in the form of a strip for reinforcing the printed circuit board means that expensive special stamping tools can be dispensed with.
  • Figure 1 shows an inventive relay with rocker armature in schematic cross section.
  • FIG. 2 shows an example of a design of the contact spring from FIG. 1.
  • FIG. 3 shows the closed contact from FIG. 1 along the line III-III in a schematic cross section.
  • Figure 1 shows an inventive relay with rocker armature. It consists of a coil 1 which is wound around a coil former 17. A core 2 passes through the coil former 17. A three-pole permanent magnet 3 is arranged between the yoke legs of the core 2. The magnet system is overmolded with a relay sheath 15. Furthermore, the relay has an elongated armature 4, on the underside of which a flexible circuit board 6 forming the contact spring is fastened. The movable contacts 5 are arranged on the flexible printed circuit board 6. These can, for example, be applied galvanically to conductor tracks 7 of the printed circuit board 6. The flexible circuit board 6 has transversely outwardly projecting arms 11 (FIG.
  • the arms are backed with a metal spring strip 16.
  • the movable contacts 5 cooperate with fixed contacts 9 which are fastened on the carrier 8.
  • the carrier 8 is designed as a plated-through rigid printed circuit board. Solder balls 14 are arranged on the outside of the carrier and act as connection elements for the fixed contacts 9 and for the contact spring 6. They are connected by means of plated-through holes 9b via conductor tracks 9a on the upper side of the rigid printed circuit board or directly to the fixed contacts 9.
  • the relay casing 15 is fastened, for example, by gluing to the carrier 8.
  • FIG. 2 shows the design of the contact spring from FIG. 1.
  • the flexible printed circuit board 6 has a section 18 connected to the armature 4, to the rear of which the armature 4 is glued. It also has movable spring arms 12 on which the movable contacts 5 arranged on conductor tracks 7 are arranged. The conductor tracks 7 are used for contacting the movable contacts 5.
  • the spring arms 12 of the circuit board 6 are partially separated from the section 18 connected to the armature 4 by incisions running along an edge section of the armature 4. As a result, the spring arms 12 can move out of the plane of the armature 4, as a result of which a contact overstroke occurs.
  • the flexible printed circuit board 6 also has two arms 11 which project transversely outwards and run along the pivot axis 10 of the armature. These arms 11 act as a torsion spring and rest on the support 13 ( Figure 1).
  • FIG. 3 shows the closed contact from FIG. 1 along the line AA in a schematic cross section.
  • the fixed contacts 9 and the solder balls 14, which serve as connection elements, are arranged on the carrier 8 towards the inside of the relay and towards the outside of the relay.
  • the armature 4 In the switching state of the relay, in which the contacts shown are closed, the armature 4 is in a position above the relay base 8, which is fixed by the armature 4 striking the core 2 (FIG. 1).
  • the spring arms 12 of the contact spring are located in a plane above the level of the section 16 of the contact spring connected to the armature 4 and at the same time bring the movable contacts 5 into contact with the fixed contacts 9.
  • the resilient connection between the spring arms 12 and the rest of the contact spring provides sure a contact force acts between the movable contact 5 and the fixed contact 9.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Electromagnets (AREA)
  • Relay Circuits (AREA)

Abstract

L'invention concerne un relais électromagnétique comprenant une bobine (1), un noyau (2), un induit (4), des contacts mobiles et fixes (5, 9), un ressort de contact (6) et un support (8). Le ressort de contact est réalisé dans une plaque conductrice flexible.
PCT/DE1999/002322 1998-07-30 1999-07-29 Relais electromagnetique WO2000007204A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19834460 1998-07-30
DE19834460.0 1998-07-30
DE19913903.2 1999-03-26
DE1999113903 DE19913903C1 (de) 1999-03-26 1999-03-26 Elektromagnetisches Relais

Publications (2)

Publication Number Publication Date
WO2000007204A2 true WO2000007204A2 (fr) 2000-02-10
WO2000007204A3 WO2000007204A3 (fr) 2000-08-31

Family

ID=26047805

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/DE1999/002341 WO2000007200A2 (fr) 1998-07-30 1999-07-29 Relais electromagnetique
PCT/DE1999/002322 WO2000007204A2 (fr) 1998-07-30 1999-07-29 Relais electromagnetique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/002341 WO2000007200A2 (fr) 1998-07-30 1999-07-29 Relais electromagnetique

Country Status (1)

Country Link
WO (2) WO2000007200A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108987190A (zh) * 2018-07-11 2018-12-11 贵州航天电器股份有限公司 一种双断点中压磁保持继电器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012006436B4 (de) * 2012-03-30 2020-01-30 Phoenix Contact Gmbh & Co. Kg Gepoltes elektromagnetisches Relais und Verfahren zu seiner Herstellung
DE102012006438A1 (de) * 2012-03-30 2013-10-02 Phoenix Contact Gmbh & Co. Kg Relais mit zwei gegensinnig betätigbaren Schaltern

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702841A (en) * 1952-07-19 1955-02-22 Nathaniel A Karr Neutral relay
FR1136502A (fr) * 1955-11-15 1957-05-15 Cie I B M France Perfectionnements aux relais
US4342016A (en) * 1979-08-20 1982-07-27 Nippon Electric Co., Ltd. Transfer-type electromagnetic relay comprising a coil around a housing of the relay and an armature carrying movable contacts at both ends
US4668928A (en) * 1986-06-23 1987-05-26 Tektronix, Inc. Bi-stable switch with pivoted armature
US4678249A (en) * 1985-12-27 1987-07-07 Indak Manufacturing Corp. Electrical switch having flexible printed circuit connector cable
EP0734037A2 (fr) * 1995-03-20 1996-09-25 Nec Corporation Relais électromagnétique sans fils de connexion pour montage en surface
DE19635277C1 (de) * 1996-08-30 1998-02-12 Siemens Ag Verfahren zur Herstellung des Ankerhubs eines Relais

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1281357A (fr) * 1960-11-29 1962-01-12 Electro Entpr L Relais électromagnétique pour circuits imprimés
GB1234746A (en) * 1970-03-05 1971-06-09 Standard Telphones And Cables Electromagnetic relay
DE2939266A1 (de) * 1979-09-28 1981-04-02 Standard Elektrik Lorenz Ag, 7000 Stuttgart Baueinheit aus einem relais und einer auf einer schaltungsplatte angeordneten schaltungsanordnung
JPH03127424A (ja) * 1989-10-12 1991-05-30 Fujitsu Ltd 電磁継電器
US5310351A (en) * 1992-10-29 1994-05-10 Mcadow Theodore Relay support circuit board unit
JPH07211212A (ja) * 1994-01-26 1995-08-11 Matsushita Electric Works Ltd リレー
DE4445129C2 (de) * 1994-12-17 2000-10-26 Hella Kg Hueck & Co Elektrisches Gerät für Kraftfahrzeuge

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702841A (en) * 1952-07-19 1955-02-22 Nathaniel A Karr Neutral relay
FR1136502A (fr) * 1955-11-15 1957-05-15 Cie I B M France Perfectionnements aux relais
US4342016A (en) * 1979-08-20 1982-07-27 Nippon Electric Co., Ltd. Transfer-type electromagnetic relay comprising a coil around a housing of the relay and an armature carrying movable contacts at both ends
US4678249A (en) * 1985-12-27 1987-07-07 Indak Manufacturing Corp. Electrical switch having flexible printed circuit connector cable
US4668928A (en) * 1986-06-23 1987-05-26 Tektronix, Inc. Bi-stable switch with pivoted armature
EP0734037A2 (fr) * 1995-03-20 1996-09-25 Nec Corporation Relais électromagnétique sans fils de connexion pour montage en surface
DE19635277C1 (de) * 1996-08-30 1998-02-12 Siemens Ag Verfahren zur Herstellung des Ankerhubs eines Relais

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 334 (E-1104), 26. August 1991 (1991-08-26) & JP 03 127424 A (FUJITSU LTD), 30. Mai 1991 (1991-05-30) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11, 26. Dezember 1995 (1995-12-26) & JP 07 211212 A (MATSUSHITA ELECTRIC WORKS LTD), 11. August 1995 (1995-08-11) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108987190A (zh) * 2018-07-11 2018-12-11 贵州航天电器股份有限公司 一种双断点中压磁保持继电器

Also Published As

Publication number Publication date
WO2000007200A3 (fr) 2000-08-31
WO2000007204A3 (fr) 2000-08-31
WO2000007200A2 (fr) 2000-02-10

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