EP0068280B1 - Dispositif de contact électrique à commande magnétique - Google Patents

Dispositif de contact électrique à commande magnétique Download PDF

Info

Publication number
EP0068280B1
EP0068280B1 EP82105222A EP82105222A EP0068280B1 EP 0068280 B1 EP0068280 B1 EP 0068280B1 EP 82105222 A EP82105222 A EP 82105222A EP 82105222 A EP82105222 A EP 82105222A EP 0068280 B1 EP0068280 B1 EP 0068280B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact arrangement
strips
legs
contact springs
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
Application number
EP82105222A
Other languages
German (de)
English (en)
Other versions
EP0068280A2 (fr
EP0068280A3 (en
Inventor
Richard Dr. Boll
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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 Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Priority to AT82105222T priority Critical patent/ATE33731T1/de
Publication of EP0068280A2 publication Critical patent/EP0068280A2/fr
Publication of EP0068280A3 publication Critical patent/EP0068280A3/de
Application granted granted Critical
Publication of EP0068280B1 publication Critical patent/EP0068280B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • 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
    • H01H51/28—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
    • H01H51/284—Polarised relays

Definitions

  • the invention relates to a magnetically actuated electrical contact arrangement with a largely closed magnetic circuit.
  • This contact arrangement preferably uses a band of a largely amorphous alloy, which can be obtained from a melt by rapid cooling if, for example, in addition to the magnetic material such as iron, cobalt and / or nickel, a metalloid, such as e.g. Boron or silicon is contained in the alloy in an amount of 15 to 25 atomic%.
  • a metalloid such as e.g. Boron or silicon is contained in the alloy in an amount of 15 to 25 atomic%.
  • Such material is electrically conductive, has good soft magnetic properties and is mechanically hard and thus elastically deformable, so that it also has good spring properties.
  • the object of the invention is to simplify such a known arrangement and to make it considerably more sensitive with regard to the response field strengths. According to the invention, this results from the features described in claim 1 and the subclaims.
  • FIG. 1 shows the contact arrangement according to the invention, which is designed here as a relay.
  • two U-shaped strips 1 and 2 are inserted into one another and surrounded by a coil 3.
  • the leg 4 of a band 1 is fastened to the lower side of an insulating piece forming a spacer 6, while the leg 5 of a band 2 is firmly connected to the upper side of the spacer 6.
  • the remaining legs 7 and 8 of the bands 1 and 2 are provided with supports 9 and 10 made of an electrically highly conductive and erosion-resistant material, as is customary, for example, with relay contacts.
  • the coil 3 When the coil 3 is not energized, there is a gap between the legs 7 and 8 of the strips 1 and 2.
  • the two inner legs 4 and 8 are attached to the two sides of an insulating piece forming the spacer 6; the upper leg 5 of the band 2 is fixed relative to the leg 4 of the band 1, for example by attachment to the wall of a housing 15.
  • the housing 15 has between the legs 4 and 5 an incision 16 into which a disk-shaped permanent magnet 17 can be inserted. This replaces the winding of the coil 3 in Figure 1, so that the arrangement can serve as a limit switch. It is also possible to pull a tape with individual magnetized sections through it and to achieve this by the contact arrangement being actuated periodically.
  • magnetization has the effect that an attractive force occurs between the legs 7 and 8; however, in the exemplary embodiment according to FIG. 2, only the leg 7 will move upwards until the contact is made.
  • FIG. 3 shows an embodiment in which the contact arrangement according to the invention can be used as a current sensor in an electrical cable.
  • the tapes 1 and 2 are placed in a housing 18 with an inner opening 19 around them.
  • An electrical conductor 20 or an electrical cable can be inserted through the inner opening 19, the current of which causes a magnetic field in the bands 1 and 2 and the switching of the contact arrangement in the manner described.
  • FIG. 4 shows an arrangement in which the contact arrangement according to the invention acts as a direct current relay with a normally closed contact.
  • the insulating spacer 6 consists of an insulating piece with a permanent magnet 21 attached to it.
  • the legs 4 and 6 are therefore separated from one another by an insulating layer and a permanent magnet.
  • the supports 9 and 10 of the legs 7 and 8 touch one another.
  • the flux in the magnetic circuit formed from the bands 1 and 2 is amplified or weakened depending on the direction of the current. Since the strips 1 and 2 are mechanically prestressed in the position shown in FIG. 4, the legs 7 and 8 will move apart from one another when the magnetic flux is weakened, and so the existing contact between the supports will be reached when a certain direct current is reached in the turns of the coil 3 Open 9 and 10.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Contacts (AREA)
  • Magnetic Treatment Devices (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Electromagnets (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Claims (6)

1. Dispositif de contact électrique à commande magnétique, avec deux ressorts de contact, à conducteurs magnétiques et électriques, constituant un circuit magnétique dans une large mesure fermé, ces ressorts étant respectivement fixés par une branche (4, 5) aux côtés opposés l'un à l'autre d'une entretoise isolante (6), et chacun étant relié à un conducteur électrique de raccordement (13, 14), tandis que, sous l'action d'un champ magnétique qui les traverse, ils sont ouverts ou fermés en se déformant élastiquement, dispositif caractérisé en ce que les ressorts de contact sont constitués par deux bandes (1, 2) courbées en forme de U, qui sont introduites l'une dans l'autre par leurs côtés ouverts, et que deux branches (7, 8) appartenant chacune à un ressort de contact différent courbé en forme de U, et dont une au moins n'est pas reliée à l'entretoise isolante (6) sont placées à une certaine distance l'une de l'autre, de sorte qu'en fonction de la magnétisation du circuit magnétique constitué par les ressorts de contact, et par déformation élastique d'au moins une bande (1, 2), ces branches se touchent, ou bien se séparent l'une de l'autre.
2. Dispositif de contact électrique selon la revendication 1, caractérisé en ce que les branches (4, 5), fixées à l'entretoise (6), des bandes (1, 2) courbées en forme de U, sont disposées à l'intérieur d'une bobine électrique (3).
3. Dispositif de contact électrique selon la revendication 1, caractérisé en ce que les bandes (1, 2) courbées en forme de U, sont disposées dans un boîtier (18) comportant une ouverture (19) entourée par ces bandes, et qu'un conducteur électrique (20) est introduit à travers cette ouverture (19) du boîtier.
4. Dispositif de contact électrique selon la revendication 1, caractérisé en ce que les branches internes (4, 8) des bandes en forme de U (1, 2) introduites l'une dans l'autre, sont fixées à l'entretoise (6), tandis qu'entre l'une (4) de ces branches internes et la branche externe voisine (5) des bandes en forme de U (1, 2) introduites l'une dans l'autre, il est prévu une encoche (16) dans le boîtier (15) du dispositif de contact, encoche dans laquelle peut être introduit un aimant permanent (17), de sorte que l'ensemble constitué par l'aimant permanent et le dispositif de contact peut être mis en oeuvre comme commutateur de fin de course.
5. Dispositif de contact électrique selon la revendication 1, caractérisé en ce que l'entretoise isolante (6) est constituée d'une pièce isolante sur laquelle est fixé un aimant permanent (21), et qu'autour des branches (7, 8), prévues pour l'établissement du contact, des bandes (1, 2) introduites l'une dans l'autre, est enroulée une bobine électrique (3), la disposition étant telle que les branches (7, 8) prévues pour l'établissement du contact se touchent sous précontrainte du fait de l'induction engendrée par l'aimant permanent (21) lorsque la bobine est sans courant, mais se séparent l'une de l'autre en fonction du niveau d'excitation de la bobine.
6. Dispositif de contact électrique selon la revendication 5, caractérisé en ce qu'au moins deux dispositifs de contact, munis chacun d'un aimant permanent (21) sont équipés d'une bobine (3) commune, et que les sens de magnétisation des deux aimants permanents sont opposés.
EP82105222A 1981-06-27 1982-06-15 Dispositif de contact électrique à commande magnétique Expired EP0068280B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105222T ATE33731T1 (de) 1981-06-27 1982-06-15 Magnetisch zu betaetigende elektrische kontaktanordnung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3125346A DE3125346A1 (de) 1981-06-27 1981-06-27 Magnetisch zu betaetigende elektrische kontaktanordnung
DE3125346 1981-06-27

Publications (3)

Publication Number Publication Date
EP0068280A2 EP0068280A2 (fr) 1983-01-05
EP0068280A3 EP0068280A3 (en) 1985-05-02
EP0068280B1 true EP0068280B1 (fr) 1988-04-20

Family

ID=6135521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105222A Expired EP0068280B1 (fr) 1981-06-27 1982-06-15 Dispositif de contact électrique à commande magnétique

Country Status (4)

Country Link
EP (1) EP0068280B1 (fr)
JP (1) JPS5840722A (fr)
AT (1) ATE33731T1 (fr)
DE (2) DE3125346A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200251296A1 (en) * 2019-02-06 2020-08-06 Honeywell International Inc. Reed switch assembly having a customizable length of activation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278871A (en) * 1965-01-06 1966-10-11 Bell Telephone Labor Inc Switching device having curved contacts arranged for end-on engagement
GB1384528A (en) * 1971-06-19 1975-02-19 Solartron Electronic Group Scanner units
US3869684A (en) * 1973-04-06 1975-03-04 Int Standard Electric Corp Bistable latching relay
FR2285705A2 (fr) * 1974-09-18 1976-04-16 Materiel Telephonique Point de croisement miniature

Also Published As

Publication number Publication date
DE3278378D1 (en) 1988-05-26
JPS5840722A (ja) 1983-03-09
DE3125346A1 (de) 1983-01-20
ATE33731T1 (de) 1988-05-15
EP0068280A2 (fr) 1983-01-05
EP0068280A3 (en) 1985-05-02

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