US2999915A - Polarized change-over contact device - Google Patents

Polarized change-over contact device Download PDF

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Publication number
US2999915A
US2999915A US694972A US69497257A US2999915A US 2999915 A US2999915 A US 2999915A US 694972 A US694972 A US 694972A US 69497257 A US69497257 A US 69497257A US 2999915 A US2999915 A US 2999915A
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US
United States
Prior art keywords
permanent magnet
contact spring
contact
over
spring
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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
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US694972A
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English (en)
Inventor
Pfleiderer Friedrich
Thiele Otto Adam
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.)
Siemens and Halske AG
Siemens Corp
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Siemens Corp
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Publication date
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Publication of US2999915A publication Critical patent/US2999915A/en
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Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention' provides a structure which is, as compared with the' known arrangement, very much sirnplified.
  • They change-over contact structure according to the invention comprises a permanent magnet which brackets the outer contact springs, the field of the permanent magnet extending across the working air gap' substantially transverse of the contact springs within a plane defined by the displacement of the change-over contact spring.
  • the advantage of the contact arrangement according to the invention resides' among others in' the possibility of using only one: permanent magnet and elimination of ux guide means.
  • FIGS. 1,- Z and 3 show embodiments comprising a U- shaped permanent magnet
  • FIGS. 4, and 6 indicate an embodiment comprising a diametric-ally magnetized cylindrical body
  • FIG.- 7 illustrates an' arrangement for producing the premagnetizat-ion of the switch-over contact spring.
  • the permanent magnet may be made in the form of a U-shaped member having legsv which embrace thev protective tubing along an area in which is disposed the working air gap.
  • the structure is shownin FIG. l in side view with some parts in section and in FIG. 2 in sectional view at the' point of the working air gap.
  • the protective tubing 1 contains the two outer contact springs 2l and 3y and the inner switch-over contact spring 4, such contact springs being made of magnetizable material.
  • the U-shaped permanent magnet 5 is disposed at the area of the Working air gap of the three contact springs.
  • the polarization of the permanent magnetS is indicated by the letters N and S.
  • Energizing coils 6 and 7 are provided for deliveringy the energy required for the actuation of the contact means. i
  • the permanent magnet 5 produces in the working air gap a eld whose forces are with proper adjustment equal between the switchove'r contact spring 4 and the contact spring 2 and between the spring 4 and contact spring 3, respectively.
  • the switch-over spring 4 accordingly, remains in its normal or resting' position. If a further iield is now produced by the energization of the coils 6 and 7, such field, depending upon its direction, will produce 2,999,915 Patented Sept. 12, 1961 ICC amplification of the forces between the switch-over contact spring and one of the outer contact springs while weakening the forces between the switch-over contact spring and the other outer contact spring. Assuming sufficient strength of the field generated by the coils 6 and 7, the inner switch-over contact spring '4 will be attracted by one of the outer contact springs and will establish contact engagement therewith.
  • the permanent magnet may be disposed rotatably about an axis extending perpendicular to the plane through the working air gap, which is defined by the motion of the switch-over contact spring. This plane is indicated in FIG. 2 by the dot-dash line.
  • FIG. 3 shows the structure according to the invention with the permanent magnet 5 in rotated position.
  • a single energizing coil 8 may be employed, which will be sucient provided that adequate energizing force is produced.
  • Rotation of the permanent magnet 5 in opposite direction would produce corresponding but oppositely effective operations.
  • the switchover contact spring 4 assumes an intermediate position between the two outer contact springs 2 andv 3. This structure presupposes a corresponding stiffness of the switch-over contact spring 4 and strength of the magnetic eld produced by the permanent magnet 5. However, if the magnetic field is increased or the stiffness of the switch-over contact spring 4 is decreased, the latter will ultimately assume a position, referred to as flip-position, in which it is in engagement with one of the two outer contact springs 2V or 3.
  • an embodiment com"- prising a permanent magnet in the form of a diametrically magnetized cylindrical body Such an embodiment is shown in partially sectional side'view in FIG. 4.
  • IFIG. 5 shows the corresponding structure in cross-sectional view along the working air gap.
  • the permanent magnet 9 is of cylindrical shape and surrounds the protective tubing 1.
  • the polarization of the polarized magnet is indicated by the letters N and S.
  • the energizing coil 10 which may .be Wound upon the permanent magnet or, if it is in the form of a separate coil, may be telescoped over the permanent magnet 9.
  • the switch-over contact spring 4 is shown in a liipped position in which it is in contactmaking engagement with the outer contact spring Z, having assumed this position responsive to the last preceding operative actuation.
  • the change-over spring may be flipped into the alternate position, into contact-making engagement with the outer contact spring 3, responsive to subsequent energization of the coil 10, in which it will likewise remain, pending further energization of the coil 10.
  • the cylindrical permanent magnet 9 may be formed of a metal sheet, and in such case, there will result an axial slot as shown in FIG. 6, which may be of varying size.
  • the slot should be of a width, such as will permit obtaining a diametrical magnetic eld.
  • switch-over contact spring may for this purpose be premagnetized; the premagnetization acting in a manner such, as if the energization coil would provide a predetermined permanent ux. Accordingly, the forces in the direction of one outer contact spring will be strengthened and in the direction of the other outer contact spring, they Will be weakened.
  • FIG. 7 shows a suitable embodiment for producing the premagnetization of the switch-over contact spring.
  • This embodiment comprises, as the one illustrated in FIG. 4, a cylindrical, diametrically magnetized permanent magnet 11, the iield of such magnet extending across the working air gap transverse of the contact springsl in a plane dened by the motion of the switch-over contact spring.
  • a further axially magnetized cylindrical body 12 is placed about the protective tubing 1, such body surrounding the switch-over contact spring 4.
  • the energizing coil ⁇ 13 may be caused to produce a iield opposing the magnetization effected by the permanent magnet 12 and, assuming proper strength of such field, the flux direction with respect to the switch-over contact spring 4 will, accordingly, be reversed, causing such spring to be attracted by the outer contact spring 3 to assume contact-making engagement therewith.
  • the switchover contact spring as such may be made of permanent magnet material.
  • a polarized protective tubing change-over contact arrangement comprising an inner change-over contact spring made of magnetizable material and two outer contact springs also made of magnetizable ⁇ inaterialsaid outer springs cooperatively disposed relative to saidvinner contact spring and forming air gaps therewith, said changeover spring being movable in a path for selective contacting engagement with said outer contact springs, and a single permanent magnet having opposite poles bracketing both of said outer contact springs, the eld of said permanent magnet extending across said air gaps of said contact springs substantially transverse thereof in a plane defined by the motion of a line disposed axially on said change-over contact spring.
  • a polarized protective tubing change-over contact arrangement comprising an inner change-over contact -spring made of magnetizable material and two outer contact springs also made of magnetizable material, said outer springs cooperatively disposed relative to said inner contact spring and forming air gaps therewith, said change-over spring being movable in a path for selective contacting engagement with said outer contact springs, a single permanent magnet having opposite poles bracketing both of said outer contact springs, the field of said permanent magnet extending across said air gaps of said contact springs substantially transverse thereof in a plane dened by the motion of a line disposed axially on said change-over contact spring, and a further permanent magnet for electing premagnetization of said change-over contact spring, said further permanent magnet being an axially magnetized cylindrical body surrounding said change-over contact spring.
  • a polarized protective tubing change-over contact arrangement comprising an inner change-over Contact spring made of magnetizable material and two outer contact springs also made of magnetizable material, said outer springs cooperatively disposed relative to said inner contact spring and forming air gaps therewith, said change-over spring being movable in a path for selective contacting engagement with said outer contact springs, a single permanent magnet having opposite poles bracketing both of said outer contact springs, the ifield of said permanent magnet extending across said air gaps of said contact springs substantially transverse thereof in a plane defined by the motion of a line disposed axially on said change-over contact spi-ing, and a further axially slotted ⁇ 'permanent magnet for-med by a cylindrical body suryspring made of magnetizable material and two outer contact springs also made of magnetizable material, said ou/ter springs cooperatively disposed relative to said inner contact spring and forming air gaps therewith, said change-over spring being movable in a path for selective contacting engagement with said

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Magnetic Treatment Devices (AREA)
US694972A 1956-12-21 1957-11-07 Polarized change-over contact device Expired - Lifetime US2999915A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES51677A DE1051411B (de) 1956-12-21 1956-12-21 Gepolter Schutzrohrwechselkontakt

Publications (1)

Publication Number Publication Date
US2999915A true US2999915A (en) 1961-09-12

Family

ID=7488355

Family Applications (1)

Application Number Title Priority Date Filing Date
US694972A Expired - Lifetime US2999915A (en) 1956-12-21 1957-11-07 Polarized change-over contact device

Country Status (7)

Country Link
US (1) US2999915A (enrdf_load_stackoverflow)
BE (1) BE562699A (enrdf_load_stackoverflow)
CH (1) CH356180A (enrdf_load_stackoverflow)
DE (1) DE1051411B (enrdf_load_stackoverflow)
FR (1) FR1186645A (enrdf_load_stackoverflow)
GB (1) GB834142A (enrdf_load_stackoverflow)
NL (2) NL107392C (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061696A (en) * 1958-10-29 1962-10-30 Bell Telephone Labor Inc Switching device
US3076878A (en) * 1960-02-08 1963-02-05 Clare & Co C P Switching assembly
US3117202A (en) * 1962-04-26 1964-01-07 Gen Electric Magnetic reed switches
US3125650A (en) * 1961-08-03 1964-03-17 Bell Telephone Labor Inc Sealed reed switch
US3190985A (en) * 1963-05-06 1965-06-22 Allen Bradley Co Convertible reed contact relay
US3196232A (en) * 1962-12-14 1965-07-20 Gen Signal Corp Reed relay
US3213233A (en) * 1962-06-30 1965-10-19 Asahi Denki Kogyo Kabushiki Ka Adjustable vibrating reed relay
US3214533A (en) * 1960-12-09 1965-10-26 Int Standard Electric Corp Reed-relay with adjustable ferrite element
US3218407A (en) * 1963-05-16 1965-11-16 Sigma Instruments Inc Circuit control device
US3250955A (en) * 1961-11-20 1966-05-10 George Kitakis Magnetically operated switch for ignition system
US3284741A (en) * 1964-04-21 1966-11-08 Mckee Automation Corp Lock-up reed switch
US3323199A (en) * 1962-12-20 1967-06-06 Bell Telephone Labor Inc Method for making electrical components
US3400348A (en) * 1961-07-03 1968-09-03 Automatic Elect Lab Polarized reed relay wherein the permanent magnet is around the reed switch and in contact with the coil
US3419829A (en) * 1960-07-09 1968-12-31 Baermann Max Dry reed contact relay with permanent magnet

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274734B (de) * 1962-07-31 1968-08-08 Siemens Ag Gepolter Schutzrohrwechselkontakt
DE1216431B (de) * 1962-07-31 1966-05-12 Siemens Ag Elektromagnetisches Relais mit Schutzrohrwechselkontakten
DE3523114A1 (de) * 1985-06-28 1987-01-08 Elfein Elektrofeingeraetebau G Verfahren zur herstellung eines reedrelais zur schaltung von hochfrequenten stroemen und danach hergestelltes reedrelais

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1836725A (en) * 1921-06-04 1931-12-15 Gen Electric Electrical apparatus
US1953929A (en) * 1930-05-17 1934-04-10 Mix & Genest Ag Electromagnetic relay
US2158009A (en) * 1937-03-18 1939-05-09 Union Switch & Signal Co Electrical relay
US2245391A (en) * 1940-07-11 1941-06-10 Bell Telephone Labor Inc Polarized relay
US2277215A (en) * 1940-06-27 1942-03-24 Bell Telephone Labor Inc Relay contact device
US2318405A (en) * 1941-06-18 1943-05-04 Bell Telephone Labor Inc Relay
US2508508A (en) * 1946-08-10 1950-05-23 Bell Telephone Labor Inc Mercury contact for electrical switches
US2609464A (en) * 1949-10-05 1952-09-02 Bell Telephone Labor Inc Relay
US2797329A (en) * 1954-11-04 1957-06-25 Research Corp Mercury contact switch impulse generator
US2844687A (en) * 1956-08-03 1958-07-22 Arthur H Gottfried Electromechanical switching element

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1836725A (en) * 1921-06-04 1931-12-15 Gen Electric Electrical apparatus
US1953929A (en) * 1930-05-17 1934-04-10 Mix & Genest Ag Electromagnetic relay
US2158009A (en) * 1937-03-18 1939-05-09 Union Switch & Signal Co Electrical relay
US2277215A (en) * 1940-06-27 1942-03-24 Bell Telephone Labor Inc Relay contact device
US2245391A (en) * 1940-07-11 1941-06-10 Bell Telephone Labor Inc Polarized relay
US2318405A (en) * 1941-06-18 1943-05-04 Bell Telephone Labor Inc Relay
US2508508A (en) * 1946-08-10 1950-05-23 Bell Telephone Labor Inc Mercury contact for electrical switches
US2609464A (en) * 1949-10-05 1952-09-02 Bell Telephone Labor Inc Relay
US2797329A (en) * 1954-11-04 1957-06-25 Research Corp Mercury contact switch impulse generator
US2844687A (en) * 1956-08-03 1958-07-22 Arthur H Gottfried Electromechanical switching element

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061696A (en) * 1958-10-29 1962-10-30 Bell Telephone Labor Inc Switching device
US3076878A (en) * 1960-02-08 1963-02-05 Clare & Co C P Switching assembly
US3419829A (en) * 1960-07-09 1968-12-31 Baermann Max Dry reed contact relay with permanent magnet
US3214533A (en) * 1960-12-09 1965-10-26 Int Standard Electric Corp Reed-relay with adjustable ferrite element
US3400348A (en) * 1961-07-03 1968-09-03 Automatic Elect Lab Polarized reed relay wherein the permanent magnet is around the reed switch and in contact with the coil
US3125650A (en) * 1961-08-03 1964-03-17 Bell Telephone Labor Inc Sealed reed switch
US3250955A (en) * 1961-11-20 1966-05-10 George Kitakis Magnetically operated switch for ignition system
US3117202A (en) * 1962-04-26 1964-01-07 Gen Electric Magnetic reed switches
US3213233A (en) * 1962-06-30 1965-10-19 Asahi Denki Kogyo Kabushiki Ka Adjustable vibrating reed relay
US3196232A (en) * 1962-12-14 1965-07-20 Gen Signal Corp Reed relay
US3323199A (en) * 1962-12-20 1967-06-06 Bell Telephone Labor Inc Method for making electrical components
US3190985A (en) * 1963-05-06 1965-06-22 Allen Bradley Co Convertible reed contact relay
US3218407A (en) * 1963-05-16 1965-11-16 Sigma Instruments Inc Circuit control device
US3284741A (en) * 1964-04-21 1966-11-08 Mckee Automation Corp Lock-up reed switch

Also Published As

Publication number Publication date
NL107392C (enrdf_load_stackoverflow)
FR1186645A (fr) 1959-08-28
CH356180A (de) 1961-08-15
NL223418A (enrdf_load_stackoverflow)
GB834142A (en) 1960-05-04
DE1051411B (de) 1959-02-26
BE562699A (enrdf_load_stackoverflow)

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