EP0300270B1 - Verklinkung für einen Schnellschalter - Google Patents

Verklinkung für einen Schnellschalter Download PDF

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Publication number
EP0300270B1
EP0300270B1 EP88110748A EP88110748A EP0300270B1 EP 0300270 B1 EP0300270 B1 EP 0300270B1 EP 88110748 A EP88110748 A EP 88110748A EP 88110748 A EP88110748 A EP 88110748A EP 0300270 B1 EP0300270 B1 EP 0300270B1
Authority
EP
European Patent Office
Prior art keywords
roller
contact bridge
switch
link
acts
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
EP88110748A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0300270A1 (de
Inventor
Henri Duffour
Serge Martin
Ernst Studer
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 Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Priority to AT88110748T priority Critical patent/ATE84913T1/de
Publication of EP0300270A1 publication Critical patent/EP0300270A1/de
Application granted granted Critical
Publication of EP0300270B1 publication Critical patent/EP0300270B1/de
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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • H01H2071/506—Latching devices between operating and release mechanism using balls or rollers in the latching device

Definitions

  • the invention is based on a latch for a quick-action switch according to the preamble of claim 1.
  • a latch which converts the response of an electrical trigger into an actuation of a switching element connected downstream.
  • the pawl acts against a roller of a spring-loaded lock
  • the torque exerted by the force actuating the pawl should be approximately the same as the torques generated by frictional forces, which prevent the pawl from moving.
  • a latching device for a high-speed switch is known with a roller rotatably mounted on an axis in a movable contact bridge. When switched on, a ratchet rod actuated by a magnet acts on the roller, presses the contact bridge against a fixed contact and thus closes the circuit with the quick switch.
  • the necessary contact force is also provided by the magnet via the latch rod transferred to the role.
  • the quick switch When the quick switch is switched off normally, the magnet is de-energized and a pre-tensioned switch-off spring that also acts on the roller pulls the contact bridge into the switch-off position. The arc that occurs is extinguished in a known manner.
  • this normal switch-off takes too long and a trigger that is actuated directly by the short-circuit current is excited. This trigger acts on the latch rod and ensures that the latch between the roller and the latch rod is released.
  • the switch-off spring acting on the roller then takes effect immediately and the contact bridge is quickly pulled in the switch-off direction.
  • the trigger acting on the ratchet rod for example a trigger magnet, must be of strong dimensions in order to be able to move the ratchet rod safely relative to the roller, since large opposing forces have to be overcome. If the trigger is designed to be somewhat weaker, the switch-off time is increased to impermissible values.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of creating a latch for a switched-on contact bridge of a high-speed switch that can be released very quickly, so that high breaking currents, in particular short-circuit currents, can be interrupted particularly quickly.
  • the advantage achieved by the invention is essentially to be seen in the fact that immediately after the release of the latch, a component of the force still acting on the roller in the switch-on direction additionally accelerates the movement of the latch rod and thus enables an even faster switch-off movement of the contact bridge.
  • a contact system of a quick switch is shown in a highly simplified manner.
  • a fixed contact 2 is fastened to a busbar 1.
  • a movable contact piece 3 is pressed onto the fixed contact 2 and is connected to one end of a movable contact bridge 4.
  • the other end of the movable contact bridge 4 is rotatably mounted in a roller bearing 5 which is suitable for carrying the current.
  • This roller bearing 5 is embedded in a busbar 6.
  • the components 1 to 6 described so far form the main circuit of the high-speed switch.
  • the contact bridge 4 is then no longer supplied with current and runs into its switch-off position without further electrical stress. As soon as the arc, which jumps in a known manner from the spark horns 8, 9 onto a large number of quenching plates (not shown), is extinguished, the current flow through the quick switch is definitely interrupted. The recurring voltage is then present between the fixed contact 2 and the contact piece 3.
  • the contact bridge 4 has an opening 12 extending in the direction of its longitudinal axis. Side walls of this opening 12 carry an axis 13 on which a cylindrical roller 14 is rotatably mounted. The axis 13 and the roller 14 have a common central axis which runs perpendicular to the direction of movement of the contact bridge 4.
  • the roller 14 rests on a latch rod 15, the end face of which facing the roller 14 is designed as a slotted link 16 which is at least partially adapted to the roller contour.
  • the end of the pawl rod 15 facing away from the roller is rotatably mounted in an insulating part 17.
  • a connecting piece 18 connects the insulating part 17 to a switch-on and switch-off device which is known in principle and which is not shown.
  • a spring 19 which is supported on a support 20 made of insulating material, presses the pawl rod 15 upward against the roller 14.
  • the on and off device acts on the roller 14 and thus on the contact bridge 4 via the pawl rod 15. In the switched-on state, it also applies the contact force between the fixed contact 2 and the contact piece 3, any contact erosion is automatically compensated for in the process.
  • the forces which act on the contact bridge 4 in the switch-on direction are applied by the switch-on and switch-off device.
  • a switch-off spring 22 which acts directly on the contact bridge 4, pulls the same into its switch-off position.
  • the opening spring 22 is insulated at least on one side to prevent stray currents from the opening spring. If very large currents, for example short-circuit currents, are to be switched off, the switch-off process must be accelerated.
  • An additional trigger 25, for example a magnet, which is directly excited by the high current acts by means of a pawl 26 on the end 27 of the pawl rod 15, which projects through the opening 12. The pawl rod 15 is pressed down and the roller 14 rolls along the backdrop 16 in the switch-off direction. The latching between roller 14 and latch rod 15 is released very quickly in this way.
  • FIG. 2 is first considered in more detail.
  • the end face of the latch rod 15 designed as a backdrop 16 is partially adapted to the roller contour. From a point A, the part of the link 16 adapted to the roll contour merges into a section running tangentially to the roll 14.
  • the link 16 is designed such that when the contact bridge 4 is switched on, the friction forces acting on the roller 14 are compensated for.
  • the section of the link 16 running tangentially to the roller 14 is inclined at an angle of 90 ° - ⁇ with respect to the switch-on direction.
  • the switch-on direction is indicated by an arrow 28.
  • the angle ⁇ itself is defined as the angle between the switch-on direction and the connecting line 29, which connects the point A with the center Z of the axis 13.
  • the same angle ⁇ also occurs as the angle between the section of the link 16 running tangentially to the roller 14 and a line running perpendicular to the switch-on direction of the latch rod 15.
  • the section of the link 16 which runs tangentially to the roller 14 does not have to run straight up to the upper edge of the latch rod 15, it can also be rounded somewhat, as indicated by a broken line 30, in order to facilitate the running of the roller 14.
  • a force P1 acts in the switch-on direction, it is by the Applied on and off device.
  • This force P1 can be broken down into its components P2 and P3 in a known manner.
  • the component P3 can be moved in parallel until its direction of action coincides with the direction of the tangential portion of the link 16. It then acts on point A from above.
  • This force component P3 counteracts an exactly equal force P4 on the same axis.
  • This force P4 is the sum of the frictional forces that occur in the axis 13, roller 14 and link 16 system.
  • the roller 14 can have an outer running surface into which a groove-shaped recess is embedded. This recess serves as a guide for the end face of the pawl rod 15.
  • the pawl rod 15 slides sideways from the roller 14 is avoided. Tilting of the two parts is also avoided. Furthermore, it is possible to adapt the end face of the latch rod 15 to the shape of the recess in the roller 14 in order to obtain an even better guidance.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Contacts (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Sheet Holders (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Trip Switchboards (AREA)
  • Lock And Its Accessories (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP88110748A 1987-07-22 1988-07-06 Verklinkung für einen Schnellschalter Expired - Lifetime EP0300270B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88110748T ATE84913T1 (de) 1987-07-22 1988-07-06 Verklinkung fuer einen schnellschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2776/87A CH673175A5 (pt) 1987-07-22 1987-07-22
CH2776/87 1987-07-22

Publications (2)

Publication Number Publication Date
EP0300270A1 EP0300270A1 (de) 1989-01-25
EP0300270B1 true EP0300270B1 (de) 1993-01-20

Family

ID=4241347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110748A Expired - Lifetime EP0300270B1 (de) 1987-07-22 1988-07-06 Verklinkung für einen Schnellschalter

Country Status (17)

Country Link
US (1) US4877928A (pt)
EP (1) EP0300270B1 (pt)
JP (1) JP2547242B2 (pt)
KR (1) KR970004395B1 (pt)
CN (1) CN1010903B (pt)
AT (1) ATE84913T1 (pt)
BR (1) BR8803654A (pt)
CA (1) CA1330224C (pt)
CH (1) CH673175A5 (pt)
CZ (1) CZ279701B6 (pt)
DE (1) DE3877645D1 (pt)
ES (1) ES2038246T3 (pt)
FI (1) FI88552C (pt)
PL (1) PL158664B1 (pt)
SK (1) SK521188A3 (pt)
SU (1) SU1748663A3 (pt)
UA (1) UA18262A (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110199080A (zh) * 2017-01-13 2019-09-03 优利思百隆有限公司 用于家具部件的引导系统

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02250628A (ja) * 1989-03-22 1990-10-08 Matsushita Electric Ind Co Ltd 複合機能素子
GB9622732D0 (en) * 1996-10-31 1997-01-08 Powerbreaker Plc Mains electrical outlet
US6621020B2 (en) * 2000-10-25 2003-09-16 Fuji Electric Co., Ltd. Breaking mechanism for circuit breaker
DE102005050693A1 (de) * 2005-10-18 2007-04-26 Siemens Ag Verklinkungsvorrichtung für einen Leistungsschalter
EP2410548A1 (de) * 2010-07-23 2012-01-25 Eaton Industries GmbH Schaltschloss für ein elektrisches Schaltgerät
CN103236379A (zh) * 2013-04-19 2013-08-07 中国船舶重工集团公司第七一二研究所 直流快速断路器触头系统
CN104299813A (zh) * 2014-10-28 2015-01-21 大全集团有限公司 一种电磁斥力机构开断器
CN106449226B (zh) * 2016-10-28 2019-04-05 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） 一种快速开关用锁扣机构及方法
CN110635178B (zh) * 2018-06-22 2021-02-19 北汽福田汽车股份有限公司 蓄电池的断电装置、蓄电池、蓄电池的控制系统及车辆
CN110931317B (zh) * 2019-09-19 2021-09-14 许继集团有限公司 直流断路器及其自锁装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR629390A (fr) * 1926-04-27 1927-11-09 Alsacienne Constr Meca Mécanisme d'accrochage à déclanchement radide et précis, applicable par exemple aux interrupteurs électriques, disjoncteurs, relais, etc.
US1966188A (en) * 1929-04-27 1934-07-10 Westinghouse Electric & Mfg Co Electric switch
US2031458A (en) * 1934-10-30 1936-02-18 Gen Electric Operating mechanism
US2251171A (en) * 1938-09-21 1941-07-29 Allis Chalmers Mfg Co Circuit breaker
US3012800A (en) * 1959-06-23 1961-12-12 Gen Electric Trip mechanism
NL268370A (pt) * 1960-08-20
US3813579A (en) * 1970-11-09 1974-05-28 Rucker Co Electric receptacle assembly with ground fault protection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110199080A (zh) * 2017-01-13 2019-09-03 优利思百隆有限公司 用于家具部件的引导系统
CN110199080B (zh) * 2017-01-13 2021-01-08 优利思百隆有限公司 用于家具部件的引导系统

Also Published As

Publication number Publication date
PL273856A1 (en) 1989-02-20
CN1010903B (zh) 1990-12-19
ES2038246T3 (es) 1993-07-16
FI883462A0 (fi) 1988-07-21
KR890002926A (ko) 1989-04-11
US4877928A (en) 1989-10-31
EP0300270A1 (de) 1989-01-25
FI883462A (fi) 1989-01-23
PL158664B1 (pl) 1992-09-30
JPS6441125A (en) 1989-02-13
FI88552C (fi) 1993-05-25
CH673175A5 (pt) 1990-02-15
ATE84913T1 (de) 1993-02-15
CN1031445A (zh) 1989-03-01
DE3877645D1 (de) 1993-03-04
UA18262A (uk) 1997-12-25
JP2547242B2 (ja) 1996-10-23
BR8803654A (pt) 1989-02-14
KR970004395B1 (ko) 1997-03-27
FI88552B (fi) 1993-02-15
CZ521188A3 (en) 1995-01-18
SK278090B6 (en) 1995-12-06
SK521188A3 (en) 1995-12-06
SU1748663A3 (ru) 1992-07-15
CZ279701B6 (cs) 1995-06-14
CA1330224C (en) 1994-06-14

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