US2851560A - Switch actuator utilizing a spring accumulator - Google Patents

Switch actuator utilizing a spring accumulator Download PDF

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Publication number
US2851560A
US2851560A US604859A US60485956A US2851560A US 2851560 A US2851560 A US 2851560A US 604859 A US604859 A US 604859A US 60485956 A US60485956 A US 60485956A US 2851560 A US2851560 A US 2851560A
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US
United States
Prior art keywords
accumulator
switch
gear
driving shaft
spring
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
US604859A
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English (en)
Inventor
Bileter Walter
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.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
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 BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
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Publication of US2851560A publication Critical patent/US2851560A/en
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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
    • 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
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • 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

  • connection and disconnection operations are elfected by identical accumulators without any additional tensioning between switchings.
  • the accumulator works with a gear which is coupled with the driving shaft of the switch, which driving shaft rotates during the disengagement of the accumulator.
  • the gear is combined with a pulling member, for example, a motor or a crank, which tensions the accumulator. Both motions are performed independently of each other so that the tensioning member remains at rest during the switching operation and, inversely, the switch shaft remains in its respective position during the tensioning operation.
  • FIG. 1 diagrammatically illustrates a simple embodiment of the invention
  • Fig. 2 shows a modification of the embodiment illustrated in Fig. l, in which an electric motor is employed as driving member;
  • FIG. 3 illustrates the use of different latching means in the general organization of Fig. 2;
  • Fig. 4 illustrates the use, in the general organization, of special means for providing a relatively great torsional moment for disconnection while a relatively smaller torsional moment is necessary for engagement.
  • Fig. 1 shows the connection of the accumulator or closing spring cylinder 1 with the gearing.
  • gearing there is, for example, represented a dilferential gear consisting of gear wheels, whereof the wheels, 3 and 4, are visible in the figure.
  • the numeral 4 designates a gear wheel, rigidly connected with a driving member (member 21 in Fig. 2) and with a planetary pinion 3 rolling thereon. The latter is, through a lever 2, pivotally connected with the accumulator 1.
  • lever 2 When the accumulator is in the tensioned state, upon disengagement of the retaining mechanism, lever 2 will be rotated in a counterclockwise direction.
  • the pinion gear 3 rolls simultaneously on the gear 4.
  • Fig. 2 shows the connection with the driving shaft 6 and with a driving member 21, which is here indicated by an electric motor.
  • a sprocket wheel 5 of a diiferential gear is rotated by the rolling planetary gear 3.
  • Said gear wheel 5 is rigidly connected with the driving shaft 6 and indicates the double rate of revolutions of the rotary motion of the pinion gear.
  • a switch 8 is, for example, actuated by the driving shaft 6 through a crank 7. When the crank moves upwardly, the switch thereby is connected; when it moves downwardly, the switch is moved to the off position.
  • the switch angle on the crank amounts thus to
  • locking members 9a and 9b are disposed on the driving shaft 6. In the illustrated state, the left locking member 9a clamps the driving shaft.
  • cam disks 12a and 12b are mounted on the driving shaft 6, which cam disks are held by rollers 14a and 14b seated on knee joint 13a and 1312.
  • the roller 14a with the knee joint 13a is pushed down by cam disk 12a until at the lowest point it clamps the cam disk 12a and thus the driving shaft 6.
  • the entire motion is damped by damping devices 15a and 15b, each of which may consist of piston and cylinder.
  • the release is effected in that the knee joint 13a is, for example, magnetically released, as indicated by the arrow.
  • the tensioning of the knee joint is effected by a spring 16a and a lever 1711.
  • cam disk 12b mounted on shaft 6 oppositely to disk 12a, actuates roller 14b and knee joint 13b.
  • the accumulator spring reduces its force.
  • the torsional moment on the driving shaft ditfers according to the condition of the accumulator. This is generally permissible for smaller switches. In switches of great current intensity, this could show disadvantageous effects.
  • the lever may then be enlarged just for an amount corresponding to the diminution of the springiness due to the gradual disengagement.
  • it can also be modified so as to produce a great torsional moment for the disconnection, while for the engagement a smaller torsional moment is produced since even the power consumption is smaller therefor;
  • the spring can be utilized to still better advantage.
  • FIG. 4 A construction of this variable lever arm is shown in Fig. 4.
  • a cam plate 18 With the case the dimension of the effective lever arm on the cam plate is small (20).
  • the cam plate rotates along, whereby the effective lever arm is enlarged.
  • the lever arm can be made smaller in an intermediate position so that asmaller torsional moment is available for the engagement than for the disengagement.
  • the accumulator may be driven either by hand or by a motor 21 (Fig. 2).
  • the motor needs to work always in the same rotating direction to lift the accumulator. If, for example, the motor fails, the switch must be lifted by hand, so that couplings must be provided for the existing constructions. According to the inventive object such disconnectable couplings may be omitted. 'It appears necessary to combine only the manual drive through-astopping latch with the gear of the motor lift.
  • the inventive idea can, likewise, be applied to switches improvement which comprises a first gear connected to the driving shaft of the switch, a differential gear system including a planetary gear cooperating with said first gear, means connecting said planetary gear to said accumulator, and means including a second gear cooperating with said planetary gear for initially tensioning said accumulator.
  • Switch actuating means as defined in claim 1 wherein the force of the accumulator actuates the driving shaft in such a manner that a half rotation of the driving shaft is always available for the connection and disconnection switch operations.
  • switch actuating means utilizing an accumulator wherein the engagement and disengagement of the switch contacts are efiected through a rotary driving shaft
  • the improvement which comprises a first gear connected to the driving shaft, a differential gear system including a planet-sq cooperating with said first gear, means connecting said planetary gear to said accumulator, and stop latch means for releasably positioning the drive shaft at definite angular positions about its longitudinal axis, said step latch means comprising cam disks displaced approximately 180 on the drive shaft, and roller ⁇ answer means cooperating with said cam disks,-- said roller follower means including damping devices econnected to the followers by means of controllable knee joints.
  • switch actuating means utilizing an accumulator wherein the engagement and disengagement of the switch contacts are effected through a rotary driving shaft
  • the improvement which comprises a first gear connected to the driving shaft of the switch, a differential gear system including a planetary gear cooperating with said first gear, and means connecting said planetary gear to said accumulator comprising a cam plate secured to said planetary gear and a follower element connecting said camplate to the accumulator so that the torsional moment affecting switch operation may be controlled to a predetermined extent.
  • Apparatus as defined in claim 1 wherein said means for initially tensioning the accumulator includes motor driving means.
  • switch actuating means utilizing an accumulator wherein the engagement and disenagement of the switch contacts are effected through a rotary driving shaft
  • the improvement which comprises a first gear connected to the driving shaft of the switch, a differential gear system including a planetary gear cooperating with said first gear, said planetary gear being rotatably supported at one end of a lever element rotatably mounted intermediate its ends on said driving shaft, means connecting the other end of said lever element to the accumulater, and stop latch means for releasably positioning the drive shaft at definite angular positions about its longitudinal axis upon the release of energy from the accumulator.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Transmission Devices (AREA)
US604859A 1955-08-29 1956-08-20 Switch actuator utilizing a spring accumulator Expired - Lifetime US2851560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2851560X 1955-08-29

Publications (1)

Publication Number Publication Date
US2851560A true US2851560A (en) 1958-09-09

Family

ID=4572288

Family Applications (1)

Application Number Title Priority Date Filing Date
US604859A Expired - Lifetime US2851560A (en) 1955-08-29 1956-08-20 Switch actuator utilizing a spring accumulator

Country Status (4)

Country Link
US (1) US2851560A (de)
CH (1) CH334440A (de)
DE (1) DE1102866B (de)
FR (1) FR1155816A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2993964A (en) * 1958-02-18 1961-07-25 Uhde Gmbh Friedrich Spring switch currents of high strength
US3534193A (en) * 1968-01-03 1970-10-13 Ramcor Inc Transmission-line switch for cross-bar switching of very high power at radio frequencies

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT339417B (de) * 1974-04-25 1977-10-25 Naimer H L Vorrichtung zur entkupplung einer schalterantriebswelle
FR2509087A1 (fr) * 1981-07-01 1983-01-07 Alsthom Atlantique Dispositif de commande mecanique pour interrupteur electrique
EP0572346A3 (en) * 1992-02-03 1994-07-27 Ormazabal Ocerin Javier High-voltage circuit breaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745515A (en) * 1954-04-07 1956-05-15 Merlin Gerin Accumulator for mechanical energy

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR992592A (fr) * 1944-07-12 1951-10-19 Merlin Gerin Mécanisme à ressort pour la commande des interrupteurs

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745515A (en) * 1954-04-07 1956-05-15 Merlin Gerin Accumulator for mechanical energy

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2993964A (en) * 1958-02-18 1961-07-25 Uhde Gmbh Friedrich Spring switch currents of high strength
US3534193A (en) * 1968-01-03 1970-10-13 Ramcor Inc Transmission-line switch for cross-bar switching of very high power at radio frequencies

Also Published As

Publication number Publication date
CH334440A (de) 1958-11-30
DE1102866B (de) 1961-03-23
FR1155816A (fr) 1958-05-08

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