EP0400414B1 - Selbstschalter, insbesondere Leitungsschutzschalter - Google Patents

Selbstschalter, insbesondere Leitungsschutzschalter Download PDF

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Publication number
EP0400414B1
EP0400414B1 EP90109428A EP90109428A EP0400414B1 EP 0400414 B1 EP0400414 B1 EP 0400414B1 EP 90109428 A EP90109428 A EP 90109428A EP 90109428 A EP90109428 A EP 90109428A EP 0400414 B1 EP0400414 B1 EP 0400414B1
Authority
EP
European Patent Office
Prior art keywords
bearing body
automatic switch
switch according
housing
trip lever
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
EP90109428A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0400414A2 (de
EP0400414A3 (de
Inventor
Dieter Kropp
Gerhard Dr.-Ing. Scholz
Günter Dipl.-Ing Böker
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.)
AEG Niederspannungstechnik GmbH and Co KG
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0400414A2 publication Critical patent/EP0400414A2/de
Publication of EP0400414A3 publication Critical patent/EP0400414A3/de
Application granted granted Critical
Publication of EP0400414B1 publication Critical patent/EP0400414B1/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H2071/7454—Adjusting only the electrothermal mechanism with adjustable axis of transmission lever between bimetal element and trip lever
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H2071/7481—Means for adjusting the conditions under which the device will function to provide protection with indexing means for magnetic or thermal tripping adjustment knob

Definitions

  • the invention relates to a circuit breaker according to the preamble of claim 1. Particularly in the case of miniature circuit breakers, it is usually necessary to transmit the movement of a triggering element, preferably a bimetallic trigger, by means of an intermediate member to a latching point of the switching mechanism.
  • a triggering element preferably a bimetallic trigger
  • a calibration and setting device for thermal triggers is known from DE-C-600 061.
  • a one-armed lever is pivotally mounted on a bracket.
  • This bracket can be adjusted by means of a screw around a dial, which carries line marks for different tripping currents. With this device, different tripping currents can be set subsequently.
  • the joint between the lever and the lug is only shifted depending on the weight by one-sided pressure of the screw.
  • This disadvantage also applies to the lever, which also slides on a button of the trigger depending on the weight and thus position.
  • a self-switch provided with such a device can therefore not be installed in any position.
  • the invention has for its object to provide a simply constructed adjustment device for a trigger lever with a self-switch of the type mentioned to adapt the trigger function to the switching mechanism, the setting functions are clearly defined and can be carried out automatically, and with improved adjustment properties a mechanical influence on the associated Excludes trigger during the adjustment process.
  • the invention is advantageous in that the adjustment is not made directly on the trigger, but indirectly by changing the position of the trigger lever. This eliminates the previously usual setting process on the actual trigger, for example at the free, flexible end of a bimetal strip. Misalignment due to the deformation of mechanical components is therefore eliminated.
  • the shape of the bearing body can also be used to implement different, automatically executable setting options. By moving the adjustment point away from the actual trigger, it can also be designed as a simpler component.
  • the single figure shows a three-dimensional partial view schematically of a self-switch in a narrow construction, the shell-shaped housing part 1 of which has a projection 1a, in which a blind hole-like cylindrical recess 1b with a pin 1c projecting centrally is recessed towards the inside of the housing.
  • a cylindrical bearing body 2 is inserted into the housing recess with almost no play and is kept stiff by means of an axial bore 2a on the pin 1c by choosing appropriate fit dimensions.
  • the bearing body is provided with an eccentrically arranged, projecting bearing pin 2b on its end face pointing towards the interior, which ends approximately flush with the projection 1a. This is preferably formed directly, but can also be an inserted pin.
  • the bearing pin 2b serves as a bearing point for a flat angular release lever 3, one of which lever arm 3a is acted upon by a trigger, for example by the free end of a bimetallic strip 4.
  • the trigger lever With its other lever arm 3b, the trigger lever preferably engages directly under a locking pin 5 of the switching mechanism.
  • a curvature of the bimetallic strip 4 in the direction of the arrow 6 shown in the event of thermal overload is therefore transmitted from the release lever to the latching pin. If the release force of the bimetallic strip is sufficiently high after covering an idle path to overcome the holding force of the latch pin, the latch is released and the automatic switch interrupts the current flow via its switching mechanism. For a certain trigger behavior, an adjustment process on the fully assembled auto switch is therefore necessary.
  • the bearing body has a toothing 2c on its outer surface, which is accessible via a blind hole 1d formed from the rear outside of the housing.
  • a blind hole 1d formed from the rear outside of the housing.
  • an external adjustment tool 7 with its gear drive 7a for the Introduce adjustment process is provided in this blind hole 1d, which is axially offset from the recess 1b.
  • the outer surface of the blind hole which is offset from the recess 1b at the axial distance by the two partial circle knives, serves as the centering of the gear drive.
  • the preferably automatically driven setting tool 7, which is controlled via triggering parameters, enables the bearing body 2 to be turned sensitively and thus guarantees an efficient adjustment of each automatic switch.
  • the tightness of the bearing body between the bore 2a and the pin 1c is overcome by the torque of the gear drive 7a, but its automatic adjustment is prevented. Additional safety measures for the adjusted position, for example by means of lacquer protection, can therefore be dispensed with.
  • the relatively small blind hole does not have to be closed subsequently, since the bearing body is preferably a plastic part and no current-carrying parts of the switch can be touched at this point. Overall, this simplifies the entire adjustment process.
  • the adjustment of the bearing body by an external adjustment tool is of course also possible in other ways, for example via a screw drive or a worm drive, without leaving the scope of the invention.
  • the bearing body must have appropriate receiving means for the setting tool, for example a screw slot.
  • stops can also be provided on the bearing body and in the recess in order to limit the adjustment sector of the bearing body to the area necessary for the adjustment.

Landscapes

  • Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Thermally Actuated Switches (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP90109428A 1989-05-27 1990-05-18 Selbstschalter, insbesondere Leitungsschutzschalter Expired - Lifetime EP0400414B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3917327 1989-05-27
DE3917327A DE3917327A1 (de) 1989-05-27 1989-05-27 Selbstschalter, insbesondere leitungsschutzschalter

Publications (3)

Publication Number Publication Date
EP0400414A2 EP0400414A2 (de) 1990-12-05
EP0400414A3 EP0400414A3 (de) 1991-04-24
EP0400414B1 true EP0400414B1 (de) 1994-12-21

Family

ID=6381537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109428A Expired - Lifetime EP0400414B1 (de) 1989-05-27 1990-05-18 Selbstschalter, insbesondere Leitungsschutzschalter

Country Status (9)

Country Link
EP (1) EP0400414B1 (cs)
AT (1) ATE116074T1 (cs)
CZ (1) CZ281845B6 (cs)
DD (1) DD294815A5 (cs)
DE (2) DE3917327A1 (cs)
ES (1) ES2065429T3 (cs)
HR (1) HRP931371B1 (cs)
PL (1) PL163238B1 (cs)
YU (1) YU47796B (cs)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4040263A1 (de) * 1990-12-17 1992-06-25 Abb Patent Gmbh Installationsgeraet
DE19619295C2 (de) * 1996-05-13 2003-10-23 Siemens Ag Justierverfahren für thermische Überlastauslöser
DE19653294A1 (de) * 1996-12-20 1998-06-25 Abb Patent Gmbh Auslöseeinrichtung für einen elektrischen Installationsschalter bei Überstrom
DE10064825A1 (de) * 2000-12-22 2002-07-04 Abb Patent Gmbh Justiereinrichtung für den thermischen Auslöser eines Installationsschaltgerätes
FR2894382B1 (fr) * 2005-12-06 2008-04-25 Schneider Electric Ind Sas Declencheur thermique reglable pour dispositif de coupure
CN116742426A (zh) * 2023-08-01 2023-09-12 湖南第一师范学院 一种具有作业保护功能的电连接器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600061C (de) * 1928-02-24 1934-07-13 Schiele & Bruchsaleri Industri Eich- und Einstellvorrichtung fuer thermische Ausloeser von UEberstromschaltern
DE708975C (de) * 1939-04-19 1941-08-02 Voigt & Haeffner Akt Ges Einstellbarer UEberstromausloeser fuer elektrische Selbstschalter
CH235374A (de) * 1943-03-29 1944-11-30 Bbc Brown Boveri & Cie Anordnung zur Auslöseverzögerung von Bimetallauslösern beim Anlauf lange anlaufender Motoren.

Also Published As

Publication number Publication date
PL285329A1 (en) 1991-01-28
EP0400414A2 (de) 1990-12-05
PL163238B1 (en) 1994-02-28
HRP931371B1 (en) 1999-08-31
EP0400414A3 (de) 1991-04-24
DE59008056D1 (de) 1995-02-02
CZ281845B6 (cs) 1997-02-12
DE3917327A1 (de) 1990-11-29
YU47796B (sr) 1996-01-09
ATE116074T1 (de) 1995-01-15
YU102490A (sh) 1993-11-16
HRP931371A2 (hr) 1995-02-28
CS253790A3 (en) 1992-02-19
DD294815A5 (de) 1991-10-10
ES2065429T3 (es) 1995-02-16

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