US2784270A - Driving mechanisms for circuit breakers - Google Patents

Driving mechanisms for circuit breakers Download PDF

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Publication number
US2784270A
US2784270A US422906A US42290654A US2784270A US 2784270 A US2784270 A US 2784270A US 422906 A US422906 A US 422906A US 42290654 A US42290654 A US 42290654A US 2784270 A US2784270 A US 2784270A
Authority
US
United States
Prior art keywords
springs
locking
arm
circuit breaker
intermediate member
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
US422906A
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English (en)
Inventor
Hidde Hendrik Arend
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.)
COQ NV
Original Assignee
COQ NV
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 COQ NV filed Critical COQ NV
Application granted granted Critical
Publication of US2784270A publication Critical patent/US2784270A/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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G25/00—Other details or appurtenances of control mechanisms, e.g. supporting intermediate members elastically
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G2700/00—Control mechanisms or elements therefor applying a mechanical movement
    • G05G2700/04—Control mechanisms limiting amplitude or adjusting datum position
    • G05G2700/08—Control mechanisms for locking members in one or more positions
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G2700/00—Control mechanisms or elements therefor applying a mechanical movement
    • G05G2700/12—Control mechanisms with one controlling member and one controlled member
    • G05G2700/14—Control mechanisms with one controlling member and one controlled member with one elastic element as essential part, e.g. elastic components as a part of an actuating mechanism

Definitions

  • the invention relates to a driving mechanism for an electric circuit breaker comprising at least one high speed opening and. closing switching contact carrying movable part, one ormore springs for the closing movement of said contact and one or more springs forthe opening movement thereof, said springs being adapted tobe tensioned' by means of a manually or a motor driving operating member and to be kept under tension by means of locking devices which automatically assume their locking positions during the tensioning of the springs, said locking devices; being able to be released for theoperation of the circuit breaker.
  • the driving mechanism according to the invention is constructed in such a manner, that at least between the intermediate member and a stationary of the driving mechanism a togglelever is provided; which constitutes both a driving memberfor the intermediate member and a locking device for the closing spring, the operating member being so coupled with the toggle lever as to move said leverinto thelocking position during its movement in one, direction and, when approaching its startingpositibiidutihg its movement in the opposite direction, to release the toggle lever from its locking position whereby the closing springs are permitted to. close the circuit breaker.
  • Figure 1' shows; the circuit breaker in opened position.
  • Figure 2 showslan intermediate position
  • Figure 3' shows the circuit. breaker. inclosed position.
  • FIG. 1 designates a switching rod adapted to be axially moved up and down and to cooperate with fixed switching. contacts 2, 3, to which,"in a manner not shown, the circuit to be closed and opened by. the circuit breaker is connected;
  • the switching rod 1 is connected through an insulator 4 to an arm 5 of abellecrank 5,, 7 which is rotatably mounted on a pivot 6.
  • the arm 7 of. the bell-crank 5, 7 is in contact with a fixed abutment 8.
  • the arm 7 is connected through one" or morejsprings 9 to the arm 10 of. a lever 10, 12 adapted to. be swung about a pivot 11.
  • the lever 10, I2 lies with its arm 12 against a fined. abutment 13.
  • the arm 12 is coupled through one or more springs 14 to a stationary part 15 of the circuit breaker.
  • the two-armed. lever 10, 12 constitutes an intermediate member. which is adapted to be driven by an operating mechanism.
  • This operating mechanism consists of a toggle. lever formed by the links 16, 17. and a handle 19, 20,.which is rotatably mountedon the shaft 18 and is capable to engage the link 17.
  • the arm 20 isprovidedwith a stud 21. adapted to engage the link 17 of'the toggleleven.
  • the arm 7 of'the bell-crank..5,.7 is also secured to a locking rod- 22.provided with.v a catch 23 which cooperates with a stud. 24 attached to the arm 10 of theint'ermediatemember 10, 12.
  • the handle 19, 20 is sw-ungabout its shaft counterclockwise. The result thereof, is, that thetoggle lever 16, 17 is moved through its stretched position against a fined abutment 25. Due to this movement'of the toggle lever the intermediate member 10, 12"is rotated counterclockwise about the pivot 11, whereby the springs 9 as well as the. springs14 are tensioned (Fig. 2). If the'handle19, 20 should be released. in theposition according to Fig, 2 the springs 9 and 14 are kept under tension, since the toggle-lever 16, 17 remains in its locking position. As soon as the intermediate member. 10, 12 has. reached the position, in which the springs9, 14 are .tensioned, the locking. rod 22. engages with its catch 23 the stud 24, so that the springs 9 for. the openingmovement of the circuit breaker are kept under tension.
  • the link 17 ofthetoggle lever 16, 17 constitutes-one arm of the. free rotatablebelr-crank 17, vL26 which is rotatably mounted on the shaft 18 of the handle 19, 20.
  • the handle 19, 20. is swung from its position showninFig. 2 in a clockwise direction it will engage with its stud 21 the arm 26 just before it reaches. its starting position.
  • the result thereof is, that thetoggle lever 16, 17 is turned. out of its locking position, whereby the closing springs 14 are permitted to release their tension and to draw the intermediate member 10, 12 with high speed against the fixed abutment 13.
  • the bellcrank 5, 7 is moved by the locking rod 22 into the position shown in Fig. 3. In this position the switching rod 1 interconnects the switching contacts 2, 3 and the circuit breaker is closed.
  • the handle 19, 20 may be replaced by a motor gear. Together with the illustrated device for releasing the toggle lever 16, 17 from its locking positions by means of the handle 19, 20 or a motor gear an electromagnet for the closing of the circuit breaker may be provided, said. electromagnet operating on the toggle lever 16, 17 in any suitable manner. l opening the circuit breaker an electromagnet may be used,
  • circuit is adapted to be operated'from a distance.
  • a driving mechanism for an electric circuit breaker comprising, in combination, a stationary part, a movable ing contact carried by said part, at least one spring adapted to be biased for the opening movement of said contact, at least one spring adapted to be biased for the closing movement of said contact, an operating member for tensioning said springs, locking devices comprising at least one toggle lever and a locking member associated with said movable part, said locking devices being adapted to move automatically into their locking positions during the tensioning of the springs by said operatingmember to keep the tensioned springs under tension, a movable intermediate member connected to said contact carrying movable part through said first-named spring and its associated locking member and to the stationary part of the mechanism through said closing spring and said toggle lever, said closing spring and said toggle lever being efiective to drive said intermediate member, and a free stroke coupling provided between said operating member and said toggle lever, whereby during its forward movement said operating member through.
  • said toggle lever as defined in claim 1, wherein said operating member is a rotary member and wherein the toggle lever link re mote from the intermediate member is formed as abellcrank adapted to journal about the axis of rotation of the operating member, said operating member being provided-with a coupling part projecting into the spacebetween the arms of the bell-crank and said free stroke coupling being defined by thefree stroke of said coupling part between said bell-crank arms.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Breakers (AREA)
US422906A 1953-04-25 1954-04-13 Driving mechanisms for circuit breakers Expired - Lifetime US2784270A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL323738X 1953-04-25

Publications (1)

Publication Number Publication Date
US2784270A true US2784270A (en) 1957-03-05

Family

ID=19784089

Family Applications (1)

Application Number Title Priority Date Filing Date
US422906A Expired - Lifetime US2784270A (en) 1953-04-25 1954-04-13 Driving mechanisms for circuit breakers

Country Status (6)

Country Link
US (1) US2784270A (en(2012))
BE (1) BE521215A (en(2012))
CH (1) CH323738A (en(2012))
FR (1) FR1081060A (en(2012))
GB (1) GB753754A (en(2012))
NL (2) NL190989A (en(2012))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062934A (en) * 1960-07-20 1962-11-06 Coq Utrecht Nv Driving mechanisms for electric circuit-breakers
US3098134A (en) * 1960-07-02 1963-07-16 Coq Nv Driving mechanisms for electric circuit-breakers
US4152562A (en) * 1977-04-20 1979-05-01 Siemens Aktiengesellschaft Driving mechanism for switching apparatus with pressure contacts
CN100555503C (zh) * 2007-11-27 2009-10-28 Tcl低压电器(无锡)有限公司 断路器自推自复式结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226701B (de) * 1961-03-01 1966-10-13 Schutzapp Ges Paris & Co M B H Schaltschloss fuer elektrische Selbstschalter, insbesondere fuer Fehlerstrom-Schutzschalter
US4723457A (en) * 1981-06-10 1988-02-09 Societe Anonyme Dite Socomec Sudden interlocking and teleunlocking mechanical assembly for a translation switch having automatic reinforced interlocker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1724776A (en) * 1924-01-31 1929-08-13 Gen Electric Electric switch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1724776A (en) * 1924-01-31 1929-08-13 Gen Electric Electric switch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3098134A (en) * 1960-07-02 1963-07-16 Coq Nv Driving mechanisms for electric circuit-breakers
US3062934A (en) * 1960-07-20 1962-11-06 Coq Utrecht Nv Driving mechanisms for electric circuit-breakers
US4152562A (en) * 1977-04-20 1979-05-01 Siemens Aktiengesellschaft Driving mechanism for switching apparatus with pressure contacts
CN100555503C (zh) * 2007-11-27 2009-10-28 Tcl低压电器(无锡)有限公司 断路器自推自复式结构

Also Published As

Publication number Publication date
GB753754A (en) 1956-08-01
CH323738A (de) 1957-08-15
FR1081060A (fr) 1954-12-15
NL190989A (en(2012))
BE521215A (en(2012))
NL77081C (en(2012))

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