US3273088A - Relay with armature contacts, particularly reed contacts - Google Patents

Relay with armature contacts, particularly reed contacts Download PDF

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Publication number
US3273088A
US3273088A US447347A US44734765A US3273088A US 3273088 A US3273088 A US 3273088A US 447347 A US447347 A US 447347A US 44734765 A US44734765 A US 44734765A US 3273088 A US3273088 A US 3273088A
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United States
Prior art keywords
contacts
reed
pairs
reed contacts
relay
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Expired - Lifetime
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US447347A
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English (en)
Inventor
Grobe Wolfgang
Mattes Emil
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International Standard Electric Corp
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International Standard Electric Corp
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    • 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
    • H01H51/285—Polarised relays for latching of contacts

Definitions

  • the invention relates to a relay with armature contacts, particularly reed contacts, in which at least two contact pairs, each provided with an operating air gap, are simultaneously actuated by a common electro-magnetic circuit.
  • armature contacts particularly reed contacts, in which at least two contact pairs, each provided with an operating air gap, are simultaneously actuated by a common electro-magnetic circuit.
  • armature contact pairs Of particular interest in this invention are relays with armature contact pairs.
  • Multi-contact relays known to the art are equipped with an electromagnet with flow guiding elements provided on the pole surfaces which distribute the total flux onto the armature contacts.
  • the latter are arranged side by side between the flux guiding elements, -i.e, they are in parallel to the magnetic circuit and each guides a portion of the total flux generated.
  • polarized relays which have two armature cont-acts, series-connected in a permanent magnet circuit and having the effect of switch-over devices.
  • the armature contacts are arranged side by side in an excitation winding, i.e. arranged in parallel to the magnetic flux.
  • the relay according to the invention has at least two armature contact pairs, each provided with an operating air gap, actuated simultaneously by a common electromagnetic circuit and is primarily characterized in this that the armature contacts with their air gaps are arranged in the electromagnetic circuit in a magnetic series 3,273,088 Patented Sept. 13, 1966 connection.
  • a particular construction of the invention for an adhesive or closed circuit relay with a permanent magnet circuit and electro-magnetic circuit, in common associated with one of the armature contacts, is characterized in this that the contacts in the permanent magnet circuit and in the electro-magnet circuit are arranged in series.
  • both magnetic circuits have the same effect in each contact in the same manner for both possible flux directions of the electro-magnet, i.e. either in all contacts in the same sense or in all contacts in the opposite sense.
  • the desired release effect of the primarily actuated contact is obtained when the contacts break as well as when they close.
  • a further embodiment of the invention for an adhesive or closed circuit relay with two side-by-side arranged reed armature contacts and a common permanent magnet is charactenized in this that between the read tube ends an excitation winding is arranged which intersects the magnetic flux with both tube axes.
  • Another construction according to the invention also provides for a relay with side-by-side located reed armature contacts characterized in this that at least one excitation winding and a permanent magnet gripping through the winding opening or encompassing the winding is associated to the side-by-side located reed tubes.
  • Another embodiment of the invention for side-by-side located reed contacts is characterized in this that between both pairs and parallel located terminal sections of the armature contacts always one excitation winding is arranged, intersecting both reed tube axes. Thereby, a larger total winding cross-section can be accommodated at equal exterior dimensions.
  • Another embodiment of the invention for side-by-side located reed contacts is characterized in this that at least on one of both reed contacts an excitation winding with a magnetizing direction coinciding with the reed axes is arranged and that both exterior side-by-side located armature ends are connected always by a flux guiding element.
  • a common permanent magnet for the armature contacts can be provided.
  • Another embodiment of the invention is characterized in this that at least two reed armature contacts with tube axes in the same direction are arranged with a certain distance in the direction of the axes and have each a coaxial winding. Therefrom results a simple fixing of the reed armature contacts and a compact construction at relatively large winding space.
  • FIG. 1 shows a relay with two side-by-side located reed armature contacts and common permanent magnet and electro-magnet
  • FIGS. 2a and 2b respectively show the course of the flux in the relay according to FIG. 1 for two different operating conditions
  • FIG. 3 shows a relay with two reed contacts and subdivided excitation Winding
  • FIG. 4 shows another construction of the relay ac cording to FIG. 3,
  • FIG. 5 shows a relay with two reed armature contacts and two permanent magnets with two excitation windings
  • FIG. 6a shows another construction of the relay according to FIG. 5 in longitudinal section
  • FIG. 6b shows an additional variation of the device shown in FIG. 6a
  • FIG. 7 shows a top view of the relay according to FIG. 6,
  • FIG. 8 shows a relay according to FIG. 1 or FIG. 5 with a matrix-shaped switching panel.
  • two reed contacts 1 with contact pairs 2 are arranged in parallel to each other within a shielding 3.
  • a permanent magnet 4 and an excitation winding 5 are arranged with the magnetizing direction always intersecting both tube axes in a right angle.
  • FIG. 2a shows the flux of said relay at a polarization in opposite direction of permanent magnet and electromagnet.
  • the relay according to FIG. 3 also possesses two sideby-side located reed armature contacts.
  • the excitation winding is here subdivided into two partial windings 8, each winding applied to one of the reed tubes.
  • the magnetizing directions of both partial windings are poled in the opposite direction so that, here too, both operating air gaps 9 are arranged in series with the magnetic flux.
  • the permanent magnet 10 corresponds in its effect to the arrangement according to FIG. 2, and encompasses the reed tube ends like a fork, offering thus a reduced magnetic resistance for the flux transition betewen the magnet and the armature contacts.
  • a flux guiding piece 11 the flux transition between the contacts is favoured.
  • the relay according to FIG. 4 essentially corresponds to the design according to FIG. 3, but the partial coils are mounted on the contacting sections, protruding over the reed contact ends. Thereby a smaller space between the axes of the reed tubes is possible.
  • the permanent magnets 12 are also provided outside the reed tubes at the terminal sections of the armature contacts.
  • the relay according to FIG. 6 corresponds in its design 'in principle to the one according to FIG. 5, whereby, however, the permanent magnets 16 encompass the partial windings 17 (FIG. 6a or FIG. 6b), and the reed tube ends with large-sized studs. Thereby a favourable fiux transition between permanent magnet and armature contacts is obtained.
  • the operating air gaps in the permanent magnet and electro-magnetic circuits are arranged magnetically in series.
  • FIG. 7 shows another elevation of: the relay according to FIG. 6a in axial direction.
  • Both reed tubes 18 are here arranged in diagonal direction of a rectangular housing 19. Therefrom result for a defined axial distance of the reed tubes and for given diameters of the windings 1'1 comparatively small exterior dimensions.
  • the construction according to FIG. 1 or FIG. 5 is particularly suitable to built up matrix-shaped switching panels as shown in FIG. 8.
  • the relay housings 19 are assembled like bricks and can be extended to two-dimensional switching panels of an arbitrary extension.
  • the multiple wiring 20 respectively 21, running along the rows and columns of the thus obtained cross-points are thereby connected to the opposite, free ends of the armature contacts.
  • a relay comprising:
  • said air spaces forming distinguishable regions of space located respectively between saidpairs of reed contacts, around said pairs of reed contacts, and extending from the ends of said pairs of reed contacts,
  • a permanent magnet positioned in a selected one of said regions of space nearr said pairs of reed contacts to form a first series magnetic linkage through said pairs of reed contacts
  • an electromagnet including a coil having independent terminals positioned near said permanent magnet and within said selected region of space to enable the formation of a second series magnetic linkage through said pairs of reed contacts,
  • said reed contacts being biased by said first series magnetic linkage to an ope-n position
  • said reed contacts remaining open in the presence of said second series magnetic linkage induced by a current of polarity opposite to said first polarity in said electromagnet.
  • the second series magnetic linkage is employed to open sa-id contacts.
  • a relay substantially as claimed in claim 1, in which the permanent magnet and the coil of the electromagnet are positioned in a region of space between the respective pairs of reed contacts.
  • a relay substantially as claimed in claim 1, in which the permanent magnet forms a ring in one of said regions of spacing surrounding the tubes containing the two pairs of said reed contacts, and
  • the electromagnet consists of two series connected rings each of which forms a ring around one of the tubes containing a pair of reed contacts.
  • a relay substantially as claimed in claim 1, in which the pairs of reed contacts are connected to terminals extending through the ends of the tubes,
  • the electromagnet includes four series connected rings,
  • each of said rings occupies a position encircling one of the terminals
  • the permanent magnet includes two components positioned respectively between terminals at the respective ends of the tubes.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
US447347A 1964-05-08 1965-04-12 Relay with armature contacts, particularly reed contacts Expired - Lifetime US3273088A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST022096 1964-05-08

Publications (1)

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US3273088A true US3273088A (en) 1966-09-13

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US447347A Expired - Lifetime US3273088A (en) 1964-05-08 1965-04-12 Relay with armature contacts, particularly reed contacts

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US (1) US3273088A (enrdf_load_stackoverflow)
BE (1) BE663589A (enrdf_load_stackoverflow)
GB (1) GB1056953A (enrdf_load_stackoverflow)
NL (1) NL6505916A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356909A (en) * 1964-02-18 1967-12-05 Ericsson Telefon Ab L M Coincident pulse operated switching means
US3414796A (en) * 1965-10-15 1968-12-03 Int Standard Electric Corp Magnetically controlled battery charge and discharge circuit
US3533029A (en) * 1966-08-24 1970-10-06 Int Standard Electric Corp Keyboard with reed contacts

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877315A (en) * 1956-06-19 1959-03-10 Bell Telephone Labor Inc Electromagnetic relay
US3015707A (en) * 1957-11-19 1962-01-02 Bell Telephone Labor Inc Relay
US3020369A (en) * 1959-04-27 1962-02-06 Bell Telephone Labor Inc Circuit controller
US3056868A (en) * 1959-08-03 1962-10-02 Bell Telephone Labor Inc Switching device
US3061696A (en) * 1958-10-29 1962-10-30 Bell Telephone Labor Inc Switching device
US3117202A (en) * 1962-04-26 1964-01-07 Gen Electric Magnetic reed switches
US3190984A (en) * 1963-02-21 1965-06-22 Bell Telephone Labor Inc Sealed contact transfer switch

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877315A (en) * 1956-06-19 1959-03-10 Bell Telephone Labor Inc Electromagnetic relay
US3015707A (en) * 1957-11-19 1962-01-02 Bell Telephone Labor Inc Relay
US3061696A (en) * 1958-10-29 1962-10-30 Bell Telephone Labor Inc Switching device
US3020369A (en) * 1959-04-27 1962-02-06 Bell Telephone Labor Inc Circuit controller
US3056868A (en) * 1959-08-03 1962-10-02 Bell Telephone Labor Inc Switching device
US3117202A (en) * 1962-04-26 1964-01-07 Gen Electric Magnetic reed switches
US3190984A (en) * 1963-02-21 1965-06-22 Bell Telephone Labor Inc Sealed contact transfer switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356909A (en) * 1964-02-18 1967-12-05 Ericsson Telefon Ab L M Coincident pulse operated switching means
US3414796A (en) * 1965-10-15 1968-12-03 Int Standard Electric Corp Magnetically controlled battery charge and discharge circuit
US3533029A (en) * 1966-08-24 1970-10-06 Int Standard Electric Corp Keyboard with reed contacts

Also Published As

Publication number Publication date
GB1056953A (en) 1967-02-01
BE663589A (enrdf_load_stackoverflow) 1965-11-08
NL6505916A (enrdf_load_stackoverflow) 1965-11-09

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