US3675168A - Electrical relays - Google Patents

Electrical relays Download PDF

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Publication number
US3675168A
US3675168A US127964A US3675168DA US3675168A US 3675168 A US3675168 A US 3675168A US 127964 A US127964 A US 127964A US 3675168D A US3675168D A US 3675168DA US 3675168 A US3675168 A US 3675168A
Authority
US
United States
Prior art keywords
rod
contacts
electromagnet
armature
operating
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
US127964A
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English (en)
Inventor
Norman Harry Olley
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.)
MTE CONTRACTOR COMPONENTS Ltd
Original Assignee
MTE CONTRACTOR COMPONENTS Ltd
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 MTE CONTRACTOR COMPONENTS Ltd filed Critical MTE CONTRACTOR COMPONENTS Ltd
Application granted granted Critical
Publication of US3675168A publication Critical patent/US3675168A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H01H11/0012—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for converting normally open to normally closed switches and vice versa
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • H01H15/10—Operating parts
    • H01H15/102—Operating parts comprising cam devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement

Definitions

  • the object of the present invention is to provide a standard electrical relay in which the contact operating mechanism can be readily adjusted to give different contact operating combinations.
  • an operating member of insulating material is provided for said pair of contacts or for each pair of contacts, said operating member or members being linearly movable in response to movement of said armature on energization and de-energization of said electromagnet and the operating member or each operating member is manually adjustable from one position relative to the mociated pair of contacts to a second position relative to the associated pair of contacts, the operating member in one position being adapted to control the associated pair of contacts to form a break combination whereas in the second position the operating member is adapted to control the associated pair of contacts to form a make combination.
  • FIG. 1 shows a part-sectional view of the preferred embodiment of the invention taken along the line 2-2 of FIG. 2, and FIG. 2 shows a part-sectional side view of the second embodiment.
  • the relay comprises a lower housing 10 for locating an electromagnetic ll and an upper housing 12 for locating a contact operating mechanism, the upper housing 12 being positioned above the electromagnet housing ll and suitably secured thereto by means not shown.
  • the contact-operating mechanism is fabricated from a suitable plastics material and includes four pairs of contacts of which one is shown in full in FIG. 1. Each pair of contacts comprises a fixed contact 13 and a movable contact 14. The fixed contact 13 is carried by a collar to which is secured an electrically conducting strip 16. The conducting strip 16 is mounted within a recess 17 in the upper housing 12 by means of the bolt 18, and extends into a socket 19.
  • the movable contact 14 of the pair of contacts is carried by a U-shaped electrically conducting spring contact blade 24 which has a V-shaped projection 25 in one limb of the U.
  • the contact blade 24 is secured to a conducting strip 26 which extends to a terminal 27 by which electrical connection is made to the contact blade 24, the arrangement for securing the conducting strip 26 and the construction of the terminal 27 being the same as described for conducting strip 16.
  • Operation of the contact blade 24 to open and close the contacts is effected by a circular rod 28 of insulating material provided with two cam surfaces which comprise cut-out portions or depressions 29, 30 at diametrically opposite positions on the rod, the roots of the depressions being spaced apart a distance equal to the stroke of the armature 31 of the electromagnet.
  • the upper end of the circular rod 28 passes through the collar 15 whereas the lower end is provided with a circumferential groove 32 which fits in an open-end slot 33 in a stirrup 34.
  • a pair of adjacent rods is located in oppositely arranged slots in a single stirrup as shown in HG. 2 where the rods 35 and 36 are shown mounted in the stirrup 37.
  • the upper surface of the T-shaped armature 31 is provided with a hook member 38 which engages with a spindle 39 which passes through holes in the two stirrups 34 and 37 and through two anm 40 and 41 which are pivotally mounted on spindle 42.
  • Springs 43 and 44 have their lower ends secured to a fixed portion of the apparatus, for instance the coil check of the electromagnet, and the upper ends act on the arms 40 and 41 thereby tending to rotate the arms in a clockwise direction as seen in FIG. 1.
  • the relay is in its de-energized condition and the springs 43 and 44 acting through the arms 40 and 41 maintain the rods in the uppermost position.
  • the V-shaped portion 25 of the contact blade 24 rests in the root of the depression in the circular rod 28 so that contacts 13 and 14 engage.
  • the electromagnet When the electromagnet is energized the armature 31 descends and carries with it the operating member 34 thereby causing downward movement of the two associated rods.
  • the V-shaped portion 25 of the contact blade 24 associated with rod 28 therefore rides out of the depression and contacts 13 and 14 separate, so that a break combination is obtained.
  • the invention enables a variety of contact combinations to be obtained by making a simple adjustment to a standard relay without the necessity of providing a number of different items for adding to the relay to attain the difierent combinations.
  • An electrical relay comprising an electromagnet, an armature for said electromagnet, at least one pair of contacts, an operating rod for each pair of contacts, first and second cam surfaces on said operating rod, said cam surfaces being located at angularly displaced positions on the rod and spaced apart along the rod by a distance equal to the stroke of the armature, a cam follower provided on the moving contact on a pair of contacts, means responsive to movement of said armature for linearly moving said rod and means for manually rotating said operating rod from one position relative to said moving contact to a second position relative to said moving contact, whereby with the operating rod adjusted to said one position the interaction of said first cam surface with said cam follower on movement of said operating rod provides a break combination and with the operating rod adjusted to said second position the interaction of said second cam surface with said cam follower on movement of said operating rod provides a make combination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
  • Push-Button Switches (AREA)
US127964A 1970-04-02 1971-03-25 Electrical relays Expired - Lifetime US3675168A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB05694/70A GB1282654A (en) 1970-04-02 1970-04-02 Improvements in or relating to electrical relays

Publications (1)

Publication Number Publication Date
US3675168A true US3675168A (en) 1972-07-04

Family

ID=10063777

Family Applications (1)

Application Number Title Priority Date Filing Date
US127964A Expired - Lifetime US3675168A (en) 1970-04-02 1971-03-25 Electrical relays

Country Status (5)

Country Link
US (1) US3675168A (de)
CA (1) CA918718A (de)
DE (1) DE2115732C3 (de)
GB (1) GB1282654A (de)
ZA (1) ZA711822B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866006A (en) * 1972-08-23 1975-02-11 Siemens Ag Pushbutton switch with reciprocating cam
US3895205A (en) * 1974-05-20 1975-07-15 Square D Co Push-to-trip button structure for a molded case circuit breaker
WO1986002690A1 (en) * 1983-04-29 1986-05-09 Anchor Eskilstuna Ab Device in electrically triggerable striking plates
US4712079A (en) * 1986-04-30 1987-12-08 Westinghouse Electric Corp. Motor controller auxiliary contact unit with flexure member
EP0902447A3 (de) * 1997-09-09 2000-01-12 Rockwell Automation AG Hilfsschalteranordnung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284971A1 (fr) * 1974-09-13 1976-04-09 Telemecanique Electrique Contacteur electromagnetique
DE2805424C2 (de) * 1978-02-09 1982-05-19 Schaltbau Gesellschaft mbH, 8000 München Elektromagnetisches Schütz mit Klappankerantrieb

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB200132A (en) * 1922-03-01 1923-07-02 Joseph Bernard Bower Improvements in electrical interrupters or make-and-break switches with vibratory contacts
US2152450A (en) * 1936-12-15 1939-03-28 Arcelon John Switch
US2621267A (en) * 1948-12-23 1952-12-09 Bendix Aviat Corp Switch mechanism
US2838622A (en) * 1955-07-21 1958-06-10 Controls Co Of America Electric switch
US3249725A (en) * 1963-05-23 1966-05-03 Gen Electric Electric switch with pressure lock terminals

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB200132A (en) * 1922-03-01 1923-07-02 Joseph Bernard Bower Improvements in electrical interrupters or make-and-break switches with vibratory contacts
US2152450A (en) * 1936-12-15 1939-03-28 Arcelon John Switch
US2621267A (en) * 1948-12-23 1952-12-09 Bendix Aviat Corp Switch mechanism
US2838622A (en) * 1955-07-21 1958-06-10 Controls Co Of America Electric switch
US3249725A (en) * 1963-05-23 1966-05-03 Gen Electric Electric switch with pressure lock terminals

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866006A (en) * 1972-08-23 1975-02-11 Siemens Ag Pushbutton switch with reciprocating cam
US3895205A (en) * 1974-05-20 1975-07-15 Square D Co Push-to-trip button structure for a molded case circuit breaker
WO1986002690A1 (en) * 1983-04-29 1986-05-09 Anchor Eskilstuna Ab Device in electrically triggerable striking plates
US4712079A (en) * 1986-04-30 1987-12-08 Westinghouse Electric Corp. Motor controller auxiliary contact unit with flexure member
AU605147B2 (en) * 1986-04-30 1991-01-10 Westinghouse Electric Corporation Motor controller auxiliary contact unit with flexure member
EP0902447A3 (de) * 1997-09-09 2000-01-12 Rockwell Automation AG Hilfsschalteranordnung

Also Published As

Publication number Publication date
GB1282654A (en) 1972-07-19
DE2115732A1 (de) 1971-10-28
CA918718A (en) 1973-01-09
DE2115732B2 (de) 1976-09-02
ZA711822B (en) 1972-04-26
DE2115732C3 (de) 1979-03-01

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