US3311857A - Relay matrix comprising polarized relays - Google Patents

Relay matrix comprising polarized relays Download PDF

Info

Publication number
US3311857A
US3311857A US449740A US44974065A US3311857A US 3311857 A US3311857 A US 3311857A US 449740 A US449740 A US 449740A US 44974065 A US44974065 A US 44974065A US 3311857 A US3311857 A US 3311857A
Authority
US
United States
Prior art keywords
core
pole pieces
cores
relay
rollable
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
US449740A
Other languages
English (en)
Inventor
Alexandersson Harald Valdemar
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of US3311857A publication Critical patent/US3311857A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
    • H01H67/26—Co-ordinate-type selector switches not having relays at cross-points but involving mechanical movement, e.g. cross-bar switch, code-bar switch

Definitions

  • the present invention refers to a relay matrix provided with a contact system of conductors crossing one another and with polarized relays at the crossing points to actuate the contacts of these conductors.
  • An object of the invention is to eliminate these disadvantages and to achieve a relay matrix, that constitutes a simple and compact connection means suited for electronic control.
  • the invention is specially characterized by a magnet system for polarization of the relays, comprising a plurality of parallel permanent magnets provided with pole pieces.
  • the pole pieces are in the form of parallel bars of magnetic material, that are located in two parallel planes through the ends of the permanent magnets.
  • the permanent magnets are so oriented that in each plane the pole pieces have alternately south pole and north pole magnetization.
  • Each of the relays comprises a core of a material with two stable states of remanent magnetization and a winding.
  • the cores are placed in parallel relationship to the permanent magnets, whereby each end of the cores is located in an opening between two bars in the respective plane.
  • the relays are provided with movable elements in the form of balls disposed at the ends of the cores to contact the bars.
  • the contact system of the relay matrix comprises partly the bars and the balls and partly a number of metal contact strips placed perpendicularly to the bars. Each one of the metal strips is arranged to cover the ends of a number of the relay cores in oneof the planes.
  • the halls are movably located on the contact strips.
  • FIG. 1 shows in schematic form a relay matrix in plane view
  • FIG. 2 shows the same device in a side view
  • FIG. 3 shows another side view, wherein the cores of the permanent magnets have been deleted to give a more clear view of the relay cores
  • FIG. 4 shows a single relay in a somewhat large scale.
  • FIGS. 1 to 3 comprises, for example, 24 relay cores 1 of a bi-stable remanent magnetic material.
  • the relay cores are arranged in rows and 3,3 l 1,85? Patented Mar. 28, 1967 columns, where each row contains four, each column six cores.
  • For polarizing of the relays a number of permanent magnets 2 are provided each one having a pair of elongated pole pieces 3 of magnetic material.
  • the permanent magnets with their poles pieces are so arranged, that the pole pieces are located in parallel relationship to each other along the core rows, and that, on each side of the matrix, the pole pieces have alternately north pole and south pole magnetization.
  • the distance between the pole pieces is substantially equal to the diameter of the cores, and the end surfaces of the cores are located in the center of the opening between the pole pieces (see FIG. 3 and FIG. 4).
  • contact metal strips 4 are placed below the pole pieces 3 covering the end surfaces of the relay cores 1.
  • a ball 5 of soft magnetic material is placed opposite each end surface of the relay cores.
  • the contact system of the matrix comprises partly the rigidly mounted pole pieces and the contact strips, which are insulated from the permanent magnets and from the relay cores as well as from each other, and partly the balls that, by the attraction force of the cores are always in electric contact with the respective contact strips. According to the magnetization polarity of the relay cores, are pulled against one or the other of the two adjacent poles pieces. All the pole pieces are on the one side provided with an insulating layer 6 against which the balls are pulled in their inactive position.
  • the relay functions in the following manner (see FIG. '4).
  • the magnetic field closes from the upper left hand pole piece, that has north pole magnetization, through the relay core 1 to the lower left hand pole piece.
  • the balls of the relay are attracted by the left 'hand pole pieces and rest against the insulating layer 6 of the pole pieces. The field closes through the balls and the relay core, while the field from the right hand pole piece pair is repelled from the core.
  • the relay core is remagnetized by a current pulse through its Winding, so that the upper end of the core has north pole magnetization and the lower end south pole magnetization, the balls 6 roll over to the position indicated by dotted lines, where they close a contact between the contact strips 4 and the right hand pole pieces.
  • the magnetic field consequently closes from the lower right hand pole piece to the upper through the balls and the relay core, and the field between the upper and lower left hand pole pieces is repelled from the relay core.
  • the windings of the relay matrix are so designed, that the individual relays may be actuated through so called additive coincidence.
  • Each core row is provided with a winding that encircles the cores of the row and each column is provided with a winding that encircles all the cores of the column as shown in FIG. 5.
  • For magnetization of a certain relay core it is necessary, that current simultaneously flows in the same direction through both windings that encircle the core in question i.e. through the winding of the row as well as through that of the column within which the core is located.
  • Other relays in the same row or column are not magnetized, because they are only influenced by current through one of their windings.
  • the magnetization direction for operating of the relays are different according to whether the cores are placed in rows With .even or odd numbers.
  • both the row and the column windings are evenly distributed along the whole axial length of the cores.
  • FIG. 7 there is shown the outer core row with its row winding 7 and its column windings 8.
  • Such a winding may easily be manufactured by means of a machine, that mounts alternately fractional row windings and fractional column windings. If so desired, the whole winding may be impregnated eventually together with the cores in a thermosetting resin.
  • a relay switching device comprising a core of bistably remanent material, said core having at least a first end, a conductor member of electrically conductive material disposed near said first end of said core, a permanent magnet means including at least first and second oppositely polarized pole pieces straddling said first end of said core and adjacent said conductor member, a rollable member of electrically conductive ferromagnetic material disposed on said conductor member and rollable to selectively contact one of said pole pieces, and a winding inductively coupled to said core and adapted to receive a switching current for controllably establishing the polarity of the remanent magnetization in the core and thereby control the contacting of said rollable member with a selected one of said pole pieces so that an electrical path is established from said conductor member via said rollable member to the selected pole piece.
  • a relay switching device comprising a core of bistably remanent magnetic material, said core having first and second ends, a conductor member of electrically conductive material disposed near one end of said core, a first permanent magnet means including first and second pole pieces adjacent, respectively, the first and second ends of said core, a second permanent magnet means including first and second pole pieces adjacent respectively the first and second ends of said core, the first .pole pieces of each of said permanent magnet means being spaced from each other and adjacent said conductor member, said permanent magnet means being so polarized that their first pole pieces are oppositely polarized and their second pole pieces are oppositely polarized, a rollable member of conductive material disposed on said conductor member and rollable to contact at any given time one of said first pole pieces, and a winding disposed about said core and adapted to receive a switching current for controllably establishing the polarity of the remanent magnetization in the core and thereby control the contacting of said rollable member to a selected one of said first pole pieces.
  • a relay switching device comprising a core of bistably remanent magnetic material, said core having first and second ends, first and second conductor members of electrically conductive material disposed near the first and second ends, respectively, of said core, first and second permanent magnet means, each of said permanent magnet means comprising a permanent magnet and first and second pole pieces, said first pole pieces being disposed adjacent to the first end of said core in mutually spaced relationship, said second pole pieces being disposed adjacent to the second end of said core and in mutually spaced relationship, said permanent magnets being magnetized with respect to each other so that the first pole piece of said first permanent magnet means and the second pole piece of said second permanent magnet means have the same polarization, said same polarization being opposite to the polarization of the first pole piece of said second permanent magnet means and the second gpole piece of said first permanent magnet means, a first rollable conductor of ferromagnetic material disposed on said first conductor member and being rollable to selectively contact one of said first pole pieces at a time, a second rollable conductor of
  • controllable members are balls.
  • a relay switching matrix comprising a plurality of cores of bi-stably remanent magantic material, said cores being arrayed in rows and columns, each of said cores having first and second ends aligned in planes, a plurality of first conductive elements, each of said first conductive elements being disposed opposite the first ends of the cores in one of the rows, respectively, a plurality of permanent magnet means, each of said permanent magnet means including at least a first linear and electrically conductive pole piece extending in a plane parallel to the plane of the first ends of said cores, said first pole pieces extending along lines orthogonal to said first conductive elements and disposed laterally to a column or cores whereby the first end of each core in the rows of cores is straddled by portions of two adjacent first pole pieces and the portion of the associated first conductive element opposite the first end of the core is similarly straddled, said permanent magnet means being so polarized that said first pole pieces sequentially alternate in polarity, a plurality of first rollable electrically conductive
  • each of said pole pieces has first and second sides contactable by said rollable members and further comprising means for electrically insulating the first side of each of said pole pieces.
  • said winding means includes a plurality of first windings, each of said first windings being inductively coupled to each core in one of said rows, respectively, and a plurality of second windings, each of said second windings being inductively coupled to each core in one of said columns, respectively.
  • each of the second windings inductively couples alternate cores of its associated column of cores in magnetically opposite directions.
  • each of said permanent magnet means further includes a second linear and electrically conductive pole piece extending in a plane parallel to the plane of the second ends of said cores, each of said second pole pieces extending along a line parallel to one of said first pole pieces, respectively, whereby the second end of each core in the rows of cores is straddled by portions of two adjacent second pole pieces and the portion of the associated second conductive element opposite the second end of the core is similarly straddled; and further comprosing a plurality of second rollable electrically conductive elements of ferromagnetic material, each of said second rollable elements being disposed on a portion of a second conductive element directly opposite the second end of a core and rollable to selectively contact the portion of either of the sec-0nd pole pieces straddling said portion of said conductive element, said second rollable magnetic elements being similarly
  • a relay matrix comprising a plurality of relay means, each of said relay means including a relay core, said relay cores being arrayed in rows and columns, a plurality of row Winding means, each of said row winding means being inductively coupled to each of the cores in a row, respectively, and a plurality of column winding means, each of said column winding means being inductively coupled to each of the cores in column respectively, each of said row winding means comprising a plurality of row windings, each of said row windings including at least a portion 'of the row turn disposed about each core of the row, respectively, and each of said column winding means comprising a plurality of column windings, each of said column windings including at least a portion of a column turn disposed about each of the cores of the column, re-
  • each core the row and column turns associated therewith being interleaved along the axial direction of the core.
  • a relay switching device comprising a first core, said first core having at least a first end, a conductor member of electrically conductive material disposed near said first end of said first core, a second core, said second core including first and a second pole pieces straddling said first end of said first core and adjacent said conductor member, one of said cores being of a by-stably remanent magnetic material and including a winding for changing the state of remanent magnetization of said core, the other of said cores being a permanent magnet, and a rollable member of electrically conductive ferromagnetic material disposed on said conductor member and rollable to simultaneously contact said conductor member and one of said pole pieces, said one of said pole pieces being determined by the state of remanent magnetization of said one of said.

Landscapes

  • Electromagnets (AREA)
US449740A 1964-07-14 1965-04-21 Relay matrix comprising polarized relays Expired - Lifetime US3311857A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE856864 1964-07-14
SE856764 1964-07-14

Publications (1)

Publication Number Publication Date
US3311857A true US3311857A (en) 1967-03-28

Family

ID=26654851

Family Applications (1)

Application Number Title Priority Date Filing Date
US449740A Expired - Lifetime US3311857A (en) 1964-07-14 1965-04-21 Relay matrix comprising polarized relays

Country Status (3)

Country Link
US (1) US3311857A (fr)
BE (1) BE664824A (fr)
FR (1) FR1436410A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510848A (en) * 1966-05-06 1970-05-05 Telemecanique Electrique Numerical read-out system for a moving body

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175062A (en) * 1962-05-29 1965-03-23 Bell Telephone Labor Inc Coincident induced current switching circuits

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175062A (en) * 1962-05-29 1965-03-23 Bell Telephone Labor Inc Coincident induced current switching circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510848A (en) * 1966-05-06 1970-05-05 Telemecanique Electrique Numerical read-out system for a moving body

Also Published As

Publication number Publication date
FR1436410A (fr) 1966-04-22
BE664824A (fr) 1965-10-01

Similar Documents

Publication Publication Date Title
US2992306A (en) Magnetically controlled switching device
US3845430A (en) Pulse latched matrix switches
US3059075A (en) Electrical switching device
US3005072A (en) Electrically controlled switching device
US1876295A (en) Unpolarized electromagnetic relay
US2516772A (en) Cross-wire switch
US3597712A (en) Switch element
US2935585A (en) Polarized electromagnetic relay
US3030451A (en) Switching device
US3631366A (en) Polarized electromagnetic relays having a floating armature
US3268840A (en) Magnetic switch contact assembly
GB1451451A (en) Selective electrical switching means
US3359463A (en) Multi-pole reed switch relay
US2969434A (en) Switching device
US3458839A (en) Locking reed and ball switches and matrices
US4019164A (en) Memory matrix
US3008021A (en) Electrically controlled switching device
US3067304A (en) Switching contacts controlled by magnetic fields
US3273088A (en) Relay with armature contacts, particularly reed contacts
US2995635A (en) Electric control device
US2836673A (en) Make-before-break relays
US2604542A (en) Cross-point switching mechanism
GB1177013A (en) Improvements in or relating to an Electro-Mechanical Switch Matrix
US3464039A (en) Electromagnetic switching device in coordinate arrays
US3621414A (en) Multipole double-throw relay