EP0720192A1 - Dispositif pour obtenir une fermeture accélérée des contacts électriques - Google Patents

Dispositif pour obtenir une fermeture accélérée des contacts électriques Download PDF

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Publication number
EP0720192A1
EP0720192A1 EP95111687A EP95111687A EP0720192A1 EP 0720192 A1 EP0720192 A1 EP 0720192A1 EP 95111687 A EP95111687 A EP 95111687A EP 95111687 A EP95111687 A EP 95111687A EP 0720192 A1 EP0720192 A1 EP 0720192A1
Authority
EP
European Patent Office
Prior art keywords
contact
holding element
engagement
switching
swivel bracket
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.)
Granted
Application number
EP95111687A
Other languages
German (de)
English (en)
Other versions
EP0720192B1 (fr
Inventor
Peter Dipl.-Ing. Flohr
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.)
Heinrich Kopp GmbH and Co KG
Original Assignee
Heinrich Kopp GmbH and Co KG
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 Heinrich Kopp GmbH and Co KG filed Critical Heinrich Kopp GmbH and Co KG
Publication of EP0720192A1 publication Critical patent/EP0720192A1/fr
Application granted granted Critical
Publication of EP0720192B1 publication Critical patent/EP0720192B1/fr
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
    • 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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • H01H2300/048—Snap closing by latched movable contact, wherein the movable contact is held in a minimal distance from the fixed contact during first phase of closing sequence in which a closing spring is charged
    • 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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the invention relates to a device for accelerating the switch-on process between a stationary electrical contact and a movable electrical contact of an electrical switching device, in particular a circuit breaker, which can be removed, the movable contact being arranged on a swivel bracket acted upon by a contact spring in the switch-on direction and for switching on with the participation of a Switch lever can be brought into its contact position on the stationary contact.
  • the invention has for its object to develop a device of the type mentioned in such a way that an existing switchgear without a major design change independent of the speed of actuation of the switching lever contact switching speed is achieved.
  • a holding element is provided in the device according to the invention, the engagement of which on the swivel bracket biased by the contact spring can be released by means of the switching lever when switched on.
  • the swivel bracket which is acted upon by the stored energy of the contact spring, is suddenly released during switch-on and can hit the stationary contact under the action of the contact spring, whereby any oxide layers present are broken through.
  • the invention thus realizes a so-called momentary switch-on, which counteracts the occurrence of switch-on arcs and ensures reliable contact closure without being dependent on the operating speed of the switch lever and without the switch-off process being impaired. This is particularly important for circuit breakers.
  • the holding element can be attached to the swivel bracket at any suitable Attack a place that does not interfere with the other functional processes and is adapted to the spatial conditions.
  • the holding element engages in a preferably sawtooth-shaped engagement recess, preferably laterally on the swivel bracket.
  • This engagement recess can be designed without great manufacturing effort in the manufacture of the swivel bracket, the engagement recess must have a holding edge or surface in order to realize the holding attack by the holding element.
  • the preferred embodiment of the engagement recess as a saw tooth with an inlet and a holding flank has the advantage that the holding element can easily and reliably engage the swivel bracket when the swivel bracket is moved from the OFF switch position to the ON switch position.
  • the holding element consists of a resilient material and can be moved away elastically from its engagement position on the swivel bracket.
  • a structurally particularly simple and space-saving solution is obtained in particular if the holding element is formed with an extended end of the contact spring. In this case, no additional element is required, but the existing contact spring is only slightly modified.
  • the holding element can also be designed as a housing-fixed spring element with a contact and engagement section.
  • the shift lever responsible for the release movement for the sudden release of the swivel bracket has a correspondingly shaped control surface against which the holding element rests.
  • This molded control surface allows all other functional design features of the shift lever to be retained, and it is advantageously possible to control the holding element by attack can be adapted to the respective needs.
  • a circuit breaker 10 is shown schematically in FIG. 1, which has a stationary contact 11 and a contact 12 which can be moved away from the contact position for contact separation and which is arranged on a leg 13 of a U-shaped pivot bracket 14.
  • the swivel bracket 14 has a second leg 15, which is supported in a swivel bearing 16.
  • the leg 15 is by a compression spring 17 via a bell crank 18 acted upon in the contact closing direction.
  • the lower end 19 of the compression spring 17 is held in a stationary manner near the deflection region 16 in a housing 20 of the circuit breaker 10.
  • the opposite end 21 of the compression spring 17 is passed through a longitudinal slot in the leg 15 in a manner not shown, and is connected to an angled part 22 of a conductor 23.
  • the conductor 23 can be connected to an electrical line via a connecting terminal 24.
  • a device 25 according to the invention is formed by a holding element 26 and, as can be seen in connection with FIG. 3, by a sawtooth-like recess 27 and a control surface 28 (FIG. 3) on a shift lever 29.
  • the sawtooth-like engagement recess 27 has an engagement flank 32 and a contact surface 33 in the region of the web 31 of the bracket 14.
  • the holding element 26 consists of an extended end of the contact spring 17 and is biased for lateral engagement with the swivel bracket 14 in order to achieve the engagement.
  • the upper end 30 of the holding element 26 is bent to make contact with the control surface 28 formed on the shift lever 29.
  • the pivoting direction of the shift lever for the switch-on movement is shown by a curved arrow.
  • a straight arrow points to the end 30 of the holding element 26, which indicates the intended disengagement movement of the holding element 26 from the sawtooth-like engagement recess 27.
  • the switch lever 29 belongs to a release lever arrangement 35 of the circuit breaker 10 and interacts with a strong contact-opening switch spring 36 and with a manually operated switch toggle 37 for a latched ready position and an unlatched OFF position.
  • a strong contact-opening switch spring 36 At the lower end of the switching lever 29 there is an attack formation 38, by means of which the leg 13 of the swivel bracket 14 can be moved into the position shown in FIG. 1 against the action of the contact spring 17 when the circuit breaker 10 is triggered, in which the holding element 26 rests on the web 31, but is not yet in the engagement recess 27.
  • the triggering lever arrangement 35 can be triggered by a triggering device 39 which is connected to a connection terminal 40 and which is connected to a connecting terminal 40 and in FIG. 1 above an arc quenching chamber 41 in the housing 20 of the circuit breaker from a certain triggering current and / or from a thermal heating that occurs 10 is arranged.
  • FIG 3 illustrates the functional relationship between the disengagement movement of the holding element 26 and the control surface 28 of the shift lever 29 responsible for this disengagement movement, which becomes effective when the shift lever 29 is rotated counterclockwise in a second phase of the engagement movement after the holding element 26 has entered the engagement recess 27 from its contact with the web 31 in a first phase of the switch-on movement.
  • the innovation is particularly notable for its simple structure, which allows the effect of instantaneous activation to be integrated into existing switching devices with little effort.
  • only one end 21 of the contact spring 17 is to be extended or, alternatively, a spring element fixed to the housing is to be provided, the swivel bracket 14 belonging to the movable contact 12 is to be provided with an engagement recess 27 or latching point, and a control surface 28 is to be attached to the switching lever 29 as a notching bevel in order to attach the desired Ensure function.
  • the device according to the invention can be used without problems in an otherwise unchanged construction of an electrical switching device, in particular a circuit breaker 10.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)
  • Relay Circuits (AREA)
  • Keying Circuit Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP95111687A 1994-12-23 1995-07-25 Dispositif pour obtenir une fermeture accélérée des contacts électriques Expired - Lifetime EP0720192B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4446411 1994-12-23
DE4446411A DE4446411A1 (de) 1994-12-23 1994-12-23 Vorrichtung zur Beschleunigung des Einschaltvorgangs zwischen elektrischen Kontakten

Publications (2)

Publication Number Publication Date
EP0720192A1 true EP0720192A1 (fr) 1996-07-03
EP0720192B1 EP0720192B1 (fr) 1999-12-29

Family

ID=6536986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95111687A Expired - Lifetime EP0720192B1 (fr) 1994-12-23 1995-07-25 Dispositif pour obtenir une fermeture accélérée des contacts électriques

Country Status (5)

Country Link
EP (1) EP0720192B1 (fr)
AT (1) ATE188310T1 (fr)
DE (2) DE4446411A1 (fr)
DK (1) DK0720192T3 (fr)
ES (1) ES2141871T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108960A1 (de) * 2001-02-16 2002-08-29 Ego Elektro Geraetebau Gmbh Elektromechanisches Schaltgerät
CN114446732B (zh) * 2022-04-08 2022-07-22 江苏东方四通科技股份有限公司 一种断路器和具有该结构的电源柜及助力方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811604A (en) * 1953-12-11 1957-10-29 Fed Electric Prod Co Automatic circuit breakers
US2811605A (en) * 1953-12-11 1957-10-29 Fed Electric Prod Co Circuit breaker
FR1230428A (fr) * 1957-05-17 1960-09-15 Dispositif pour provoquer la fermeture brusque et la coupure lente des contacts mobiles dans les disjoncteurs et interrupteurs
FR2552930A1 (fr) * 1983-10-03 1985-04-05 Licentia Gmbh Mecanisme de commutation pour interrupteur de securite de ligne
DE9311791U1 (de) * 1993-08-07 1993-10-07 Heinrich Kopp Ag, 63796 Kahl Kontaktanordnung für Schutzschaltgeräte

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811604A (en) * 1953-12-11 1957-10-29 Fed Electric Prod Co Automatic circuit breakers
US2811605A (en) * 1953-12-11 1957-10-29 Fed Electric Prod Co Circuit breaker
FR1230428A (fr) * 1957-05-17 1960-09-15 Dispositif pour provoquer la fermeture brusque et la coupure lente des contacts mobiles dans les disjoncteurs et interrupteurs
FR2552930A1 (fr) * 1983-10-03 1985-04-05 Licentia Gmbh Mecanisme de commutation pour interrupteur de securite de ligne
DE9311791U1 (de) * 1993-08-07 1993-10-07 Heinrich Kopp Ag, 63796 Kahl Kontaktanordnung für Schutzschaltgeräte

Also Published As

Publication number Publication date
DK0720192T3 (da) 2000-06-19
ATE188310T1 (de) 2000-01-15
ES2141871T3 (es) 2000-04-01
DE4446411A1 (de) 1996-06-27
DE59507525D1 (de) 2000-02-03
EP0720192B1 (fr) 1999-12-29

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