EP0061383A1 - Schalter mit gleichgültiger Arbeitslage und dessen Anwendung in einem Relais - Google Patents

Schalter mit gleichgültiger Arbeitslage und dessen Anwendung in einem Relais Download PDF

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Publication number
EP0061383A1
EP0061383A1 EP82400420A EP82400420A EP0061383A1 EP 0061383 A1 EP0061383 A1 EP 0061383A1 EP 82400420 A EP82400420 A EP 82400420A EP 82400420 A EP82400420 A EP 82400420A EP 0061383 A1 EP0061383 A1 EP 0061383A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
switch
contact
magnetic material
housing
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.)
Granted
Application number
EP82400420A
Other languages
English (en)
French (fr)
Other versions
EP0061383B1 (de
Inventor
Jacques Legrand
Gérard Holvoet
Philippe Pouyez
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.)
Socapex SA
Original Assignee
Socapex SA
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 Socapex SA filed Critical Socapex SA
Publication of EP0061383A1 publication Critical patent/EP0061383A1/de
Application granted granted Critical
Publication of EP0061383B1 publication Critical patent/EP0061383B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/287—Details of the shape of the contact springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/0201—Materials for reed contacts

Definitions

  • the present invention relates to a switch in any operating position provided with two electrical contacts disposed respectively on a support and a movable blade connected to a third contact, each switch being disposed inside a housing, said blade being able to tilt. from the first to the second contact or vice versa under the action of an external magnetic field.
  • Such a switch has been described for example in French application No. 80 00 308 filed on January 8, 1980 in the name of the Applicant.
  • Such a switch generally consists of a metal base having a metal outlet which is electrically connected to it and outlet contacts or posts which are insulated therefrom by glass beads forming a tight seal.
  • On the base is disposed a movable blade of magnetic material which can pivot freely and which comes to bear on a first or a second contact connected by the supports to the posts.
  • the base is covered with a cover of non-magnetic material sealed in a sealed manner.
  • the inside of the case is wetted with mercury which improves the functioning of the assembly.
  • Such a switch is generally controlled using two electromagnetic coils arranged laterally and which attract the blade either on one side or the other or more generally using a permanent magnet placed on the cover and cooperating with an electromagnetic coil.
  • the permanent magnet permanently polarizes the end of the fixed contacts.
  • the moving blade under the action of the magnetic field created by the coil is polarized in one direction or the other according to the direction of the excitation current of the coil so as to make it switch from one position to another.
  • the fixed contact supports usually used in this type of switches as well as in all similar switches are generally made from magnetic material such as an alloy of iron and nickel.
  • magnetic material such as an alloy of iron and nickel.
  • the base of the housing being generally itself made of magnetic material, that is to say generally of steel, the magnetic flux derived along these fixed contacts follows a circuit which closes on this base. As this magnetic flux does not intervene in the operation of the switch, it constitutes a significant loss of the flux delivered by the magnet.
  • the magnetic flux produced by the coil and channeled by the magnetic circuit towards the moving blade is also subdivided by passing not only in said moving blade but also in the fixed contacts which also causes a significant loss of magnetic flux. Consequently, it is necessary to have sufficient control power to, taking into account these losses, allow the tilting of the movable blade from one fixed contact to the other or vice versa.
  • the switch according to the invention avoids this drawback.
  • the first and the second contact supports comprise a part made of electrically conductive and non-magnetic material.
  • this non-magnetic intermediate part arranged between the electrical contact and the post will be made of copper or a copper alloy, for example with nickel.
  • very good results are obtained by using the non-magnetic alloys of the above metals well known under the name monel.
  • the invention also relates to an electromagnetic relay comprising electromagnetic control means and a switch as defined above.
  • electromagnetic control means a perma magnet will preferably be used nent disposed above the housing associated with an electromagnetic coil provided with a suitable magnetic circuit. These means will for example conform to those defined above.
  • FIG. 1 there is shown a switch 1 as described in the above-referenced French patent application. It has a metal base 2 coated with a non-magnetic cover 3. This base has a contact which is electrically connected to it 11, and pierced at 12 and 13 to receive the fixed contact supports 4 and 5 which are extended by the external contacts or posts respectively 10 and 9.
  • the crossing of the base at 12 and 13 is carried out by means of a sealed glass bead, allowing a sealing under a controlled atmosphere of the base 2 and of the housings 3.
  • a blade mobile magnetic 6 pivoting at 7 comes to bear on the contacts 24 and 25 which extend the contact supports 4 and 5.
  • Above the cover 3 is disposed a permanent magnet 14 and an electromagnetic coil 15 supplied with current by 17 and 18 and provided with a magnetic circuit 16 disposed substantially in line with the blade 6.
  • the permanent magnet 14 polarizes the contacts 24 and 25 which are made of magnetic material.
  • a current pulse of determined direction is sent into the electromagnetic coil 15.
  • This consequently generates a magnetic field channeled by the circuit magnetic 16 in the direction of the blade 6 itself made of magnetic material. Consequently, this polarizes under the action of this magnetic field and when said field has an appropriate direction, it creates at the end thereof a pole of sign identical to that of the fixed contact which is adjacent to it, thus creating a repulsion of the latter and consequently an attraction of the other contact which is of opposite pole.
  • a pulse of opposite sign in the coil allows the blade to return to its initial position.
  • a symmetrical position of the magnet and the coil with respect to the plane of symmetry of the contacts 4 and 5 allows bistable operation of the switch, while asymmetrical positioning of these electromagnetic control means would allow 'obtaining a monostable operation of said switch.
  • FIG 2 there is shown an electromagnetic relay provided with a device as shown in Figure 1, the same elements as those of this figure bearing the same references.
  • This device is arranged in a housing 100 comprising a base 102 and a cover 101, two output contacts being shown 103 and 104.
  • FIG. 3 represents a device similar to that of FIG. 1 but fitted with electrodes according to the invention which considerably improve the operation of the relay.
  • the contact supports 4 and 5 of FIG. 1 have here been replaced by supports 44 and 45 made of non-magnetic material such as monel. At their ends are arranged respectively contacts made of magnetic material 46 and 47 oriented substantially perpendicular to the non-magnetic parts 44 and 45.
  • the contact supports 44 and 45 are also connected at their other end to the posts 10 and 9, the connections being made in both cases without any difficulty, for example by welding.
  • the length of these non-magnetic parts 44 and 45 depends of course on the intensity of the magnetic field generated by the magnetic bar 14 and the coil 15.
  • each contact 46 and 47 will be provided with a non-magnetic part 61, 62 which will protrude at least 0.05 mm and preferably 0.1 mm from the contacts 46 and 47. This improves the operation of the relay by avoiding the blade sticking in contact when the two are of the same pole and in intimate contact. This phenomenon is well known to those skilled in the art.
  • the contact support and the post may consist of a single and continuous piece of non-magnetic material, possibly having a flattened part inside the housing.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
EP19820400420 1981-03-20 1982-03-09 Schalter mit gleichgültiger Arbeitslage und dessen Anwendung in einem Relais Expired EP0061383B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8105660 1981-03-20
FR8105660A FR2502389A1 (fr) 1981-03-20 1981-03-20 Interrupteur a position de fonctionnement indifferente et relais utilisant un tel interrupteur

Publications (2)

Publication Number Publication Date
EP0061383A1 true EP0061383A1 (de) 1982-09-29
EP0061383B1 EP0061383B1 (de) 1985-01-09

Family

ID=9256486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820400420 Expired EP0061383B1 (de) 1981-03-20 1982-03-09 Schalter mit gleichgültiger Arbeitslage und dessen Anwendung in einem Relais

Country Status (3)

Country Link
EP (1) EP0061383B1 (de)
DE (1) DE3261807D1 (de)
FR (1) FR2502389A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10229803B2 (en) 2015-08-09 2019-03-12 Microsemi Corporation High voltage relay systems and methods

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078229B (de) * 1958-12-06 1960-03-24 Standard Elektrik Lorenz Ag Magnetisch betaetigte Schutzrohrkontaktanordnung
US3440583A (en) * 1965-05-14 1969-04-22 Int Standard Electric Corp Reed relay employing flux collectors and a pivoted armature
DE1954237A1 (de) * 1964-11-12 1971-05-06 Standard Elek K Lorenz Ag Schutzrohrkontakt
US3665349A (en) * 1969-10-28 1972-05-23 Square D Co Reed switches
US4038620A (en) * 1973-10-09 1977-07-26 Shlesinger Jr B Edward Magnetic reed switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078229B (de) * 1958-12-06 1960-03-24 Standard Elektrik Lorenz Ag Magnetisch betaetigte Schutzrohrkontaktanordnung
DE1954237A1 (de) * 1964-11-12 1971-05-06 Standard Elek K Lorenz Ag Schutzrohrkontakt
US3440583A (en) * 1965-05-14 1969-04-22 Int Standard Electric Corp Reed relay employing flux collectors and a pivoted armature
US3665349A (en) * 1969-10-28 1972-05-23 Square D Co Reed switches
US4038620A (en) * 1973-10-09 1977-07-26 Shlesinger Jr B Edward Magnetic reed switch

Also Published As

Publication number Publication date
DE3261807D1 (en) 1985-02-21
FR2502389A1 (fr) 1982-09-24
FR2502389B1 (de) 1984-05-04
EP0061383B1 (de) 1985-01-09

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