EP1105902A1 - Unite tige de commande pour interrupteurs - Google Patents

Unite tige de commande pour interrupteurs

Info

Publication number
EP1105902A1
EP1105902A1 EP99941501A EP99941501A EP1105902A1 EP 1105902 A1 EP1105902 A1 EP 1105902A1 EP 99941501 A EP99941501 A EP 99941501A EP 99941501 A EP99941501 A EP 99941501A EP 1105902 A1 EP1105902 A1 EP 1105902A1
Authority
EP
European Patent Office
Prior art keywords
shaft body
unit according
shaft unit
caps
selector shaft
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
EP99941501A
Other languages
German (de)
English (en)
Other versions
EP1105902B1 (fr
Inventor
Rolf Dieter Bauer
AEG Niederspannungstech GmbH & CO KG KRANZ Stefan
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
AEG Niederspannungstechnik 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 AEG Niederspannungstechnik GmbH and Co KG filed Critical AEG Niederspannungstechnik GmbH and Co KG
Publication of EP1105902A1 publication Critical patent/EP1105902A1/fr
Application granted granted Critical
Publication of EP1105902B1 publication Critical patent/EP1105902B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber

Definitions

  • the invention relates to a switching shaft unit for switches according to the preamble of claim 1.
  • the invention relates in particular to a switching shaft unit to be installed in a low-voltage switch.
  • a shift shaft unit of the generic type is known from the document EP 0 560 697 B1, the circular-cylindrical shift shaft body of which is penetrated by a diametrically extending recess.
  • this recess also accommodates a tensioning device that acts on it and is equipped with springs.
  • the switching shaft unit designed in this way is rotatably mounted in the housing of a circuit breaker by means of the cylindrical peripheral surface of the switching shaft body.
  • the object of the invention is to provide a switching shaft unit which has a longer service life and is less susceptible to short-circuit-related discharges occurring in the control room.
  • the task is to create a switching shaft unit in which on two opposite sides of the
  • Selector shaft body Caps for covering and lateral storage of the selector shaft body are attached.
  • the bearing friction caused by the function of the selector shaft unit is restricted to certain sections, which are also relatively difficult to attack due to short-circuit-induced discharges in the contact space due to their special position on the selector shaft body.
  • the contact lever can be acted upon by means of a tensioning device which is arranged essentially on the opposite sides of the selector shaft body and is covered by the caps.
  • the tensioning device is accommodated in an area protected by the caps outside the recess in the selector shaft body which receives the contact lever and is exposed to the effects of short-circuit-related discharges.
  • the caps are positively connected to the opposite sides of the selector shaft body by means of two diametrically opposed sections.
  • Such sections can be, for example, projections which are formed on the inside of the caps and can be brought into engagement with recesses provided on the opposite sides of the selector shaft body.
  • one of the depressions is expedient to design one of the depressions as a through opening provided in the selector shaft body, which can be used at the same time for receiving a pin for actuating the selector shaft unit. In this way, several can be parallel to each other arranged switching shaft units are actuated by a single rod rod which penetrates the switching shaft body.
  • the tensioning device consisting essentially of two springs is preferably accommodated in two channel-shaped depressions which extend diametrically and parallel to one another on the sides of the shift shaft body. These depressions simultaneously form engagement sections for projections correspondingly provided on the inside of the caps.
  • the orientation of the recesses should preferably be chosen so that the direction of extension of each recess closes an angle in the range from 20 ° to 70 ° with the line connecting the diametrically opposite engagement sections formed on the selector shaft body.
  • the sections provided for producing a positive connection between selector shaft body and cap comprise projections which are formed on the opposite sides of the selector shaft body and can be brought into engagement with recesses machined in the disc-shaped caps. These recesses are preferably designed as U-shaped cutouts in the disc-shaped caps, rib-shaped projections extending from the bottom sections of the U-shaped cutouts, which can be brought into engagement with corresponding slot-shaped depressions in the selector shaft body.
  • each cap preferably has two intersecting depressions on its inside facing the eternal side of the selector shaft body, so that one of these depressions is always aligned with the channel-shaped recess on the selector shaft body regardless of the mounting side of the cap.
  • each cap preferably has a bearing pin on its outside for mounting the selector shaft body, the bearing pin having a substantially smaller diameter than the diameter of the selector shaft body, which is cylindrical in itself.
  • An alternative combination solution of the object according to the invention can also be achieved by a shift shaft unit, in which the tensioning device is arranged covered outside the space receiving the contact lever in the interior of the shift shaft body or on the shift shaft body.
  • the covered arrangement of the tensioning device can in turn be achieved by detachable caps on the selector shaft body.
  • FIG. 1 shows a partial sectional view of a housing of an arc-quenching device of a low-voltage switch, in which the switching shaft unit according to the invention is installed;
  • FIG. 2 the switching shaft unit shown in FIG. 1 when the switch is switched off;
  • 3a a perspective, partially exploded view of a first embodiment of the shift shaft unit according to the invention
  • 3b a representation of the shift shaft unit in FIG. 3a in a partially assembled state
  • FIG. 4b an illustration of the shift shaft unit in FIG. 5a in a partially assembled state
  • the low-voltage switch has an arc-quenching device, which consists of a housing 11, a switching shaft unit 9 accommodated in the housing, arc chambers, current-carrying conductors 16 and other parts which improve the arc-quenching.
  • the housing 11 of the arc extinguishing device is mounted in a housing of the low-voltage switch, which is not shown in detail.
  • the switching shaft unit 9 serves to establish an electrical connection between the two current-carrying conductors 16.
  • the selector shaft unit 9 essentially consists of a cylindrical selector shaft body 2, on which an S-shaped contact lever 3 is rotatably supported by means of a bearing shaft 5 installed in this body.
  • the entire selector shaft unit 9 is rotatably mounted in a receiving section (not shown) of the housing 11, the particular type of this bearing being explained in detail in the context of the following illustration of the structural design of the selector shaft unit.
  • the switching shaft unit 9 can be actuated by means of a joint 10 in order to achieve the switched-on state shown in FIG. 1 or the switched-off state of the switch shown in FIG. 2.
  • the selector shaft unit 9 consists of a selector shaft body 2, which is rotationally symmetrical, approximately cylindrical.
  • the axis of the cylindrical shift shaft body 2 coincides with the geometric axis of the bearing axis 5, on which the contact lever 3 is pivotally mounted.
  • the contact lever 3 is received in a recess 2e which extends perpendicular to the axis of the selector shaft body 2 and passes through the selector shaft body 2 diametrically.
  • depressions 2c which extend diametrically and parallel to one another and are channel-shaped.
  • U-shaped slots 2d are provided in the wall between the central recess 2e and the bottom section of the respective recess 2c, which are provided for receiving pins 6.
  • a roller 6a is rotatably mounted approximately in the center and is slidably received in the recess 2e.
  • Spring 7 is accommodated in the channel-shaped depressions 2 c, which are hooked in on both sides at the spring pin ends on each end face of the selector shaft body 2.
  • the length of the slots 2d is dimensioned in comparison to the width of the central bearing section of the S-shaped contact lever 3 so that, regardless of the operating state of the switch, the pins 6 are under no circumstances contracted up to the stop on the bottom of the U-shaped slots 2d can.
  • Rotation of the selector shaft body 2 leads to the rollers 6a of the pins 6 rolling on the respective vertices of the S-shaped contact lever 3 and being pressed apart in the slots 2d against the force of the spring 7 which pulls the spring pins 6 together, thereby resulting in a constant Apply clamping force to the contact lever 3 counterclockwise.
  • the Heidelbergwellenkorper 2 further has a receiving opening 2b, in which a rod-shaped pin 1 is received. Diametrically opposite to the receiving opening 2b, 2 U-shaped cutouts 2a are machined on both end faces of the switching shaft body. Caps 8 are provided on both sides of the cylindrical switching shaft body 2. Each cap 8 has a circumferential, cylindrical collar section 8e and is provided on its inside with a pair of approximately diametrically extending reinforcing steps 8c and a U-shaped rib section 8a which is formed independently of these. The reinforcing ribs also serve to increase the creepage distances and clearances in the arc quenching device of the switch.
  • a recess 8 ⁇ is formed, which extends diametrically on the inside of the cap 8.
  • the caps can be positioned on the selector shaft body 2 in such a way that the recesses 8 ⁇ each lie in one plane with the slots 2d of the selector shaft body 2 and accommodate the ends of the pins 6 in stock.
  • recesses 8 ⁇ thus serve as guides for the pins 6 in their operational displacement m the slots 2d, so that a possible tilting of the pins in the slots 2d can be effectively avoided.
  • the cap 8 also has an opening formed by a cylindrical portion 8b extending on the inside of the cap.
  • the cylindrical section 8b is located diametrically opposite the protruding U-shaped rib section 8a and has an outer diameter which corresponds approximately to the inner diameter of the receiving opening 2b formed in the selector shaft body 2.
  • the line connecting the center point of the cylindrical section 8b with the center point of the U-shaped rib section 8a closes the same angle with the diametral line hypothetically drawn between the ribs 8c as the angle between the recess 2a line connecting the receiving opening 2b and the center line of the channel-shaped recess 2c. This angle is generally between 20 ° and 70 °, preferably around 65 °.
  • a pin-shaped pin 8d is provided on the outside of one of the caps 8 is on the diametrically opposite side to the opening of the cylindrical portion 8b, i.e.. H. behind the U-shaped rib section 8a.
  • the pin 8d serves as an installation safety device so that the selector shaft body 2 can be installed correctly in the housing 11 of the switch (not shown in detail).
  • Each cap 8 is provided on its outside with a journal 8f, which is used for the axial mounting of the selector shaft unit 9 in the receiving section of the switch housing 11, not shown.
  • a journal 8f On the front outer surface of each cap, two diametrically opposite openings 8g are formed, which serve to relieve the pressure on the selector shaft body 2.
  • One of the caps 8 has on its collar portion 8e a projecting portion 8h, which at the same time serves to mark the correct mounting position of the cap and the circumferential covering of the slots 2d and the rollers 6a in the selector shaft body 2.
  • the contact lever 3 When assembling the selector shaft unit 9, the contact lever 3 is first fitted into the recess 2e of the selector shaft body 2 so that the pin 5 serving as the articulated axis can be pushed from the outside through the selector shaft body 2 and a bearing opening of the contact lever 3 (not shown individually). Then the pins 6 are inserted into the slots 2d and the spring 7 is hung on both sides of the selector shaft body at the pin ends with the spring being pulled apart slightly.
  • the two caps 8 are then first pressed together on both end faces of the switching shaft body 2 until the U-shaped rib section 8a provided on the inside of the caps, the ribs 8c and the cylinder-shaped section 8b correspondingly in the U-shaped recess 2a, the channel-shaped recess 2c and the receiving opening 2b are fitted.
  • the caps 8 are preferably made of plastic, so that the provided on the inside of the caps raised portions 8a, 8c and 8a can be used under slight pressure on both sides of the shift shaft body 2 and therefore no additional means for attaching these caps to the shift shaft body are required.
  • the switching shaft unit 9 assembled in this way is then arranged in the housing 11 of the arc-quenching device in a receiving section (not shown in detail in FIG. 1) such that the bearing journals 8f extending axially on both sides of the switching shaft unit are received in corresponding contours with slide bearing sections of the receiving section can.
  • the joint 10 shown in Fig. 1 is attached to an outside of the housing 11 so that the rod-shaped pin 1 into an eye formed at the lower end of the joint 10 and an opening aligned with the eye of one of the cylindrical portions 8b of the caps 8 can be used.
  • FIGS. 4a and 4b show a further embodiment of the selector shaft unit 9 according to the invention.
  • This embodiment of the selector shaft unit differs from the first embodiment shown in FIGS. 3a and 3b essentially by the different design of the end faces of the selector shaft body and the caps.
  • the control shaft body 22 shown in FIGS. 4a and 4b has a recess 22e which extends perpendicular to the axis of the control shaft body and in which the contact lever 23 is received with the contact elements 24 and is mounted on a pin 25.
  • the enlarged cylindrical sections 26a of the pins 26 come into contact with the apex surfaces of the S-shaped contact lever 23, as is indicated in the illustration in FIG. 1, when the selector shaft body is rotated 22 counterclockwise an elastic contact pressure on the contact lever in his Exercise closed position. This mechanism was already explained in the first embodiment.
  • each end face of the switching shaft body 22 two approximately rectangular projections 22a, 22b are diametrically opposed to one another.
  • the projections 22b formed on both end faces of the selector shaft body 22 form the outlets of a bore section provided in the selector shaft body 22 for receiving a rod-shaped pin 21, while only openings 22g are formed in the diametrically opposite projections 22a.
  • a diametrically extending channel-shaped recess 22c for receiving the spring 27 is formed between the projections 22a and 22b.
  • Slit-shaped depressions 22f are formed in the end faces of the switching shaft body 22 along the opposite sides of the projections 22a, 22b.
  • Plate-shaped caps 28 made of flat material are provided on both sides of the switching shaft body 22. These caps have a substantially flat disk shape with diametrically opposed cutouts 28a, 28b which, when the caps are put on, are suitable for receiving the projections 22a, 22b formed on the end faces of the selector shaft body 22.
  • the U-shaped cutouts 28a, 28b have, in their base area, sections 28c angled to the mounting side of the caps 28 hm, which correspond to their length according to the width of the cutouts 28a, 28b, for firmly attaching the caps to the end faces of the selector shaft body 22 into the slot-shaped ones Recesses 22f are pluggable and at the same time serve to increase the creepage distances and clearances in the switch.
  • an X-shaped recess 28e is also formed, which, regardless of the end face to which the cap is to be attached, is suitable for one of the end faces of the shift shaft body to the outside in the projecting section of Take up spring 27.
  • This design of the recess 28e permits interchangeability of the caps 28 to be fitted on both sides of the selector shaft body 22.
  • the diameter of the plate-shaped caps 28 corresponds to the diameter of the cylindrical selector shaft body 22, so that the edges in the assembled state the caps 28 are aligned flush with the cylindrical peripheral surface of the selector shaft body 22.
  • each of the caps 28 there is provided a bearing journal 28f, by means of which the selector shaft unit can be rotatably mounted in a correspondingly designed bearing section of the housing 11, which is not shown in detail in FIG. 1.
  • the design of the selector shaft unit shown in detail above at the same time ensures that the selector shaft unit is mounted in the switch housing in a structurally simple manner and at the same time ensures reliable protection of the moving parts in the selector shaft body against electrical discharges in the event of rollovers.
  • the caps are designed so that they ensure a reliable connection with the Heidelbergwellenkorper. The access of the gases resulting from short circuits to the moving parts of the switch and the selector shaft unit is thereby made more difficult and improved shielding from an adjacent switch unit is ensured.
  • the removable caps can be dispensed with in order to simplify production, in that the tensioning device is accommodated outside the area of the recess 2e, 22e which receives the contact lever, but is still protected inside the switching shaft body.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)
  • Control Of Transmission Device (AREA)
  • Mechanical Control Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Vehicle Body Suspensions (AREA)
  • Keying Circuit Devices (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Breakers (AREA)

Abstract

L'invention concerne une unité tige de commande pour interrupteurs, qui comprend un corps (2) de tige de commande sur lequel est disposé un levier de contact (3). Les faces opposées du corps (2) comportent des chapeaux (8) destinés à recouvrir et à supporter ledit corps. L'unité peut comporter en outre un dispositif de tensionnement pouvant entrer en contact avec le levier. Le dispositif de tensionnement est soit disposé à l'intérieur du corps, en dehors de l'espace de réception du levier, soit recouvert par les chapeaux et disposé sur ledit corps.
EP99941501A 1998-08-13 1999-08-02 Unite tige de commande pour interrupteurs Expired - Lifetime EP1105902B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19836754 1998-08-13
DE19836754A DE19836754B4 (de) 1998-08-13 1998-08-13 Schaltwelleneinheit für Schalter
PCT/EP1999/005570 WO2000010188A1 (fr) 1998-08-13 1999-08-02 Unite tige de commande pour interrupteurs

Publications (2)

Publication Number Publication Date
EP1105902A1 true EP1105902A1 (fr) 2001-06-13
EP1105902B1 EP1105902B1 (fr) 2004-02-25

Family

ID=7877451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99941501A Expired - Lifetime EP1105902B1 (fr) 1998-08-13 1999-08-02 Unite tige de commande pour interrupteurs

Country Status (13)

Country Link
EP (1) EP1105902B1 (fr)
JP (1) JP2002522888A (fr)
CN (1) CN1175453C (fr)
AT (1) ATE260511T1 (fr)
AU (1) AU5509499A (fr)
DE (2) DE19836754B4 (fr)
ES (1) ES2214879T3 (fr)
HU (1) HU223852B1 (fr)
ID (1) ID28229A (fr)
MX (1) MXPA01001497A (fr)
PL (1) PL194228B1 (fr)
TW (1) TW445472B (fr)
WO (1) WO2000010188A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933919B4 (de) * 1999-07-20 2009-09-10 Aeg Niederspannungstechnik Gmbh & Co Kg Bewegbarer Kontakt mit niedrigem elektrischen Widerstand
DE10049407C2 (de) * 2000-10-05 2002-10-10 Aeg Niederspannungstech Gmbh Schaltwelleneinheit für elektrische Schalter, insbesondere für Niederspannungsschalter
DE102005028474B4 (de) * 2005-06-20 2008-04-30 Siemens Ag Kontaktsystem, insbesondere für ein Schaltgerät
DE102008056493A1 (de) 2008-11-06 2010-05-12 Siemens Aktiengesellschaft Betätigungseinrichtung für mindestens einen an einem Schaltgerät anbringbaren Hilfsschalter und/oder Hilfsauslöser
US9953789B2 (en) 2009-09-18 2018-04-24 Schneider Electric Industries Sas Single-pole breaking unit comprising a rotary contact bridge, and a switchgear device, and circuit breaker comprising such a unit
CN102612723B (zh) * 2009-09-18 2015-08-12 施耐德电器工业公司 包括旋转触头桥的单极断开单元、包括这样的单元的开关装置和包括这样的装置的断路器
FR2950471B1 (fr) * 2009-09-18 2011-09-09 Schneider Electric Ind Sas Bloc de coupure unipolaire comportant un pont de contacts rotatif, dispositif de coupure comportant un tel bloc et disjoncteur comportant un tel dispositif
DE102009050296A1 (de) 2009-10-15 2011-04-21 Siemens Aktiengesellschaft Leistungsschalter, insbesondere für Niederspannungen
DE102010035625A1 (de) 2010-08-24 2012-03-01 Siemens Aktiengesellschaft Elektrischer Schalter und Verfahren zum Montieren einer Schalteinheit eines elektrischen Schalters
KR101141537B1 (ko) * 2011-01-03 2012-05-04 엘에스산전 주식회사 한류형 배선용차단기의 가동접촉자 어셈블리
DE102012201257A1 (de) 2012-01-30 2013-08-01 Siemens Aktiengesellschaft Rotorgehäuse für einen Öffnungsmechanismus einer Schaltvorrichtung für ein elektrisches Schaltgerät
CN106128877B (zh) * 2016-06-30 2018-04-13 乐清市联合贸易有限公司 断开单元、包括该单元的开关装置和包括该装置的断路器

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Publication number Priority date Publication date Assignee Title
GB2006527B (en) * 1977-10-21 1982-03-17 Dorman Smith Switchgear Ltd Electric circuit breaker contact arm mounting
FR2622347B1 (fr) * 1987-10-26 1995-04-14 Merlin Gerin Dispositif de coupure pour un disjoncteur multipolaire a contact rotatif double
FR2688626B1 (fr) * 1992-03-13 1994-05-06 Merlin Gerin Disjoncteur a boitier moule a pont de contacts freine en fin de course de repulsion.
US5361052A (en) * 1993-07-02 1994-11-01 General Electric Company Industrial-rated circuit breaker having universal application
DE29605081U1 (de) * 1996-03-08 1996-06-05 Siemens AG, 80333 München Leistungsschalter mit isolierendem Kontakthebelträger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0010188A1 *

Also Published As

Publication number Publication date
ES2214879T3 (es) 2004-09-16
PL346042A1 (en) 2002-01-14
DE59908659D1 (de) 2004-04-01
CN1316093A (zh) 2001-10-03
HU223852B1 (hu) 2005-02-28
WO2000010188A1 (fr) 2000-02-24
CN1175453C (zh) 2004-11-10
TW445472B (en) 2001-07-11
AU5509499A (en) 2000-03-06
MXPA01001497A (es) 2002-04-24
ATE260511T1 (de) 2004-03-15
ID28229A (id) 2001-05-10
PL194228B1 (pl) 2007-05-31
DE19836754A1 (de) 2000-02-17
HUP0103209A3 (en) 2002-02-28
EP1105902B1 (fr) 2004-02-25
DE19836754B4 (de) 2006-10-05
JP2002522888A (ja) 2002-07-23
HUP0103209A2 (hu) 2001-12-28

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