EP0585261B1 - Mechanismus für einen selbstschalter - Google Patents
Mechanismus für einen selbstschalter Download PDFInfo
- Publication number
- EP0585261B1 EP0585261B1 EP92909411A EP92909411A EP0585261B1 EP 0585261 B1 EP0585261 B1 EP 0585261B1 EP 92909411 A EP92909411 A EP 92909411A EP 92909411 A EP92909411 A EP 92909411A EP 0585261 B1 EP0585261 B1 EP 0585261B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- contact
- trigger
- spring
- dead
- 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
Links
Images
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
- 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 mechanism for a circuit breaker with the features of the preamble of claim 1.
- Such a mechanism is known from DE-PS 500 098 for an electromagnetic overcurrent switch.
- the toggle lever mechanism described therein consists of several articulated brackets that press a spring-loaded contact lever against a fixed contact when the hand lever is switched on.
- the articulated brackets forming the toggle lever are mutually adjusted by means of a screw in order to precisely maintain the over-center position.
- a curved surface is formed directly on a tab or attached as a separate part, on which a plunger of a release element acts.
- the curve of very differently curved shape should be approximately the same distance from the plunger during the switch-on movement, so that the plunger can push through the knee joint immediately after contact with an overcurrent.
- a switching mechanism is known from DE 23 36 222 A1, in which a spring-mounted contact lever interacts with a manual control knob via several hinged tabs.
- One of these tabs holds a pin that is longitudinally guided in a slot, which in turn can be hooked behind a rotatably mounted pawl and thereby locks the entire mechanism.
- the double-armed contact lever is guided with a slot on a fixed axis and can be swiveled around it.
- a spring acts on the contact lever, which in the switched-on position tensions the entire mechanism and generates the contact pressure.
- This switching mechanism is disadvantageous in that several articulated arms are required, which are additionally locked with a latching mechanism. The achievement of low unlatching forces is achieved here only by a large component effort.
- the invention has for its object to simplify the above-mentioned toggle lever mechanism and to improve it for a modern automatic switch, in particular a line and / or residual current circuit breaker, in such a way that the stable, almost extended over-center position of the toggle lever without Adjustment or setting work is given automatically and independently of the installation position of the switch, and the force and travel components required to release the latching are determined very precisely and can be maintained in series production with only slight scatter.
- a uniform and precisely defined trigger curve which is always traceable regardless of the state of the contact point, should be achieved.
- the mechanism according to the invention is advantageous in that the knee joint lever, in its almost extended, stable dead center position, acts practically like a rigid lever, and its two articulated arms only support one another without any additional parts. Due to the special design of the stretching lever and the round wire bracket in large-scale production, the over-center travel for all switches with small tolerances can be precisely maintained. All joint partners have a consistently high surface quality, so that only slight bearing friction occurs at the joint points and especially in the knee joint. In addition, the mechanism is hardly susceptible to vibrations and its pivot points are insensitive to dust or burn-off particles.
- the triggering force can also be precisely specified via the precise triggering path, because this is mainly determined by the stretching movement resulting from the over-dead center path up to the dead center position against the force of the contact lever spring.
- it is Influence of the tension spring buckling the two articulated arms in the direction of the over-center position due to their special arrangement in the switch-on position and thus also in the event of release.
- a particular advantage of the invention is that during the switch-on process, a release cam of the extension lever and a shaft of the round wire bracket together describe a circular path which is precisely defined by the contact lever and is only flat. As a result, an exact, always constant tripping curve is defined, regardless of the state of the contact point and its changing erosion reserve when switching on, from the first contact touch to the fully self-locking switch-on position. Especially when it is switched on, it is triggered immediately and before the toggle end position is reached.
- the knee joint lever jumps into its unstable position only when the dead center position is exceeded, thereby releasing the contact lever for the switch-off movement, while if the trigger movement is insufficient, for example after a brief thermal load, it returns to the original stable over dead center position specified by the mechanism .
- the mechanism shown in its functional level according to FIGS. 1 to 3 has a manual control knob 1 designed for manual switching, which for the most part is arranged within a housing 2 of the automatic switch, which is only indicated, and is pivotably mounted on an axis 2a fixed to the housing between fixed stops 2b, 2c.
- the hand control toggle protrudes approximately diametrically opposite its handle 1a protruding from the housing and has a bore 1b in which a stretching lever 3 is pivotably articulated by means of an axis 3a. Together with a U-shaped round wire bow 4 acting as a support lever, this forms a knee joint lever which will be described in more detail and which represents the essence of the invention.
- the stretching lever 3 is a molded plastic part with a bearing bore 3b determining the joint for one leg 4a of the round wire bracket 4, the other leg 4b, which is supported on one side on a stop surface 3e, engages in a link 5a of a rigid contact lever 5.
- This is held approximately in the middle with an elongated hole 5b on a further housing-fixed axis 2d and pivotable about it, so that its contact-side lever arm 5c can be brought into the closed position with a fixed contact piece 6.
- a spring 7 which is suspended in the housing with an eyelet 7a and which has a hook 7b approximately between the link 5a and the elongated hole 5b on the contact lever 5 attacks, pulls this in the switched-on position (FIG.
- bracket shaft of the leg 4b supports the half-shell-shaped link 5a reliably and reliably, so that the spring 7 presses the contact lever 5, which is preferably designed as a flat part and is displaceable on the axis 2d, clockwise against the fixed contact piece 6 and generates the contact pressure.
- a the release lever 9 On another axis 2e fixed to the housing is a the release lever 9 overlapping the contact lever 5, which can be pivoted clockwise in a known manner, for example in the case of a circuit breaker, by a thermal or magnetic release element (not shown).
- the release lever 9 has an area on the outer edge which is matched to the switching movements and the release behavior and has a release contour 9a and thus works on a specifically arranged release cam 3d of the extension lever 3 (FIG. 1, FIG. 5, FIG. 6).
- this strongly curved curve at the articulation point 3b / 4a can only be reproduced with difficulty with a release lever and in any case requires a considerable free travel of the release member until the knee joint lever is pushed through.
- the stop surface 3e which is located below the unlatching cam and is particularly dimensionally matched to the two bearing points 3a, 3b, is also of significant importance, since in the almost stretched stable position of the knee joint lever formed from the extension lever 3 and bracket 4, the over-dead center path "X" is precisely specified (length of the Distance “X” in Fig. 4 schematically exaggerated). Depending on the spring forces and the lever arms of different lengths, this over-center travel determines the triggering behavior of the mechanism, so that a careful adjustment of the distance "X" will be necessary in accordance with the respective force relationships.
- the knee joint lever which acts as a rigid lever in the switched-on position (FIG. 1, FIG. 4), is also pivoted with its bearing axis 3a forming a second knee joint on the hand control knob 1 itself via dead center, based on the applicable connecting line (not shown) between the toggle axis 2a and the bracket shaft 4b 'engaging the contact lever.
- the entire mechanism is thus predominantly clamped in force in equilibrium via the spring 7, which is arranged approximately parallel to the stretching lever 3 and pulls approximately at right angles on the contact lever 5, the housing stop 2b and the fixed contact piece 6 forming the counter bearings.
- the influence of the tension spring 8 is only of minor importance.
- the stretching lever 3 describes a pivoting movement in a counterclockwise direction about its axis 3a.
- the bracket shaft 4a 'mounted in the stretching lever moves, while the bracket shaft 4b' supporting the contact lever 5 'is released from the stop surface 3e.
- the tension spring 8 acting on the stretching lever 3 also pulls it into the position shown in FIG. 3 at about the same time, the hand control knob now coming to rest on the opposite stop 2c.
- the axis 3a has moved on a circular path about the toggle axis 2a and thus the point of application of the tension spring 8 on the hook extension 3c to such an extent that a strong clockwise pivoting moment pulls the stretching lever 3 and thus the bracket 4 in the direction of the stable position.
- bracket shaft 4b The in the scenery 5a of the contact lever with sufficient longitudinal play, but laterally guided bracket shaft 4b 'can only dodge to the extent that the extension lever with its abutment surface 3e in any case lies against the bracket shaft 4b' and the knee joint lever immediately returns to its almost extended Takes over dead center position (Fig. 3).
- the mechanism is now ready to be switched on again.
- a corresponding, preferably manual, left-hand pivoting movement on the handle 1a then pushes the stretching lever 3, which also pivots on the axis 3a in the opposite sense together with the round wire bracket 4 as a practically rigid lever in the direction of the contact lever 5, which is pushed on its link 5a by the bracket shaft 4b 'finally reaches the switch-on position shown in FIG. 1; unless the trigger lever 9 already unlatches the mechanism during the switch-on movement, for example when it is switched on.
Landscapes
- Mechanical Control Devices (AREA)
- Breakers (AREA)
- Mechanisms For Operating Contacts (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4116454 | 1991-05-18 | ||
DE4116454A DE4116454A1 (de) | 1991-05-18 | 1991-05-18 | Mechanismus fuer einen selbstschalter |
PCT/DE1992/000370 WO1992021134A1 (de) | 1991-05-18 | 1992-05-06 | Mechanismus für einen selbstschalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0585261A1 EP0585261A1 (de) | 1994-03-09 |
EP0585261B1 true EP0585261B1 (de) | 1995-06-28 |
Family
ID=6432045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92909411A Expired - Lifetime EP0585261B1 (de) | 1991-05-18 | 1992-05-06 | Mechanismus für einen selbstschalter |
Country Status (17)
Country | Link |
---|---|
EP (1) | EP0585261B1 (es) |
AR (1) | AR247457A1 (es) |
AT (1) | ATE124570T1 (es) |
BG (1) | BG61050B1 (es) |
CZ (1) | CZ284710B6 (es) |
DE (2) | DE4116454A1 (es) |
EG (1) | EG19578A (es) |
ES (1) | ES2075697T3 (es) |
HK (1) | HK41996A (es) |
HU (1) | HU213962B (es) |
IE (1) | IE69031B1 (es) |
IL (1) | IL101844A (es) |
PL (1) | PL168428B1 (es) |
PT (1) | PT100474A (es) |
RU (1) | RU2105376C1 (es) |
TR (1) | TR27254A (es) |
WO (1) | WO1992021134A1 (es) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005091323A1 (de) * | 2004-03-17 | 2005-09-29 | Abb Patent Gmbh | Schaltwerk für ein elektrisches installationsschaltgerät |
EP1659604A2 (de) | 2004-11-18 | 2006-05-24 | ABB PATENT GmbH | Installationsschaltgerät |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19507605C1 (de) * | 1995-03-04 | 1996-08-22 | Abb Patent Gmbh | Verklinkungseinrichtung für elektrische Schalter |
DE19609407A1 (de) * | 1996-02-29 | 1997-09-04 | Siemens Ag | Leistungsschalter mit einem Federspeicher |
DE19701470C1 (de) * | 1997-01-17 | 1998-01-02 | Geyer Ag | Verklinkungseinrichtung für einen elektrischen Schalter |
DE19735408B4 (de) * | 1997-08-14 | 2008-04-10 | Siemens Ag | Schaltmechanismus für einen Schutzschalter |
DE19922852C1 (de) * | 1999-05-19 | 2001-04-19 | Eti Elektroelement Dd | Schalter |
DE19944824C1 (de) * | 1999-09-18 | 2001-02-01 | Geyer Ag | Verklinkungseinrichtung für einen elektrischen Schalter |
DE10133878B4 (de) * | 2001-07-12 | 2004-07-08 | Siemens Ag | Schaltgerät mit einem Schaltschloss |
DE10211905A1 (de) * | 2002-03-18 | 2004-04-15 | Eti Elektroelement D.D. | Leitungsschutzschalter mit zweipoliger Unterbrechung |
DE50306740D1 (de) * | 2003-04-03 | 2007-04-19 | Siemens Ag | Antriebsvorrichtung für Installationsgeräte und entsprechendes Verfahren |
NL1027340C2 (nl) * | 2004-10-26 | 2006-04-27 | Eaton Electric Nv | Mechanisme voor beveiligingsschakelaar. |
DE102007046356B4 (de) * | 2007-09-27 | 2009-12-10 | Siemens Ag | Schaltmechanik einer Fehlerstromschutzeinrichtung, Fehlerstromschutzeinrichtung sowie System mit einer Fehlerstromschutzeinrichtung und einem Leitungsschutzschalter |
DE102011087651A1 (de) * | 2011-12-02 | 2013-06-06 | Siemens Aktiengesellschaft | Schaltgeräteauslöseeinrichtung |
US10199196B2 (en) * | 2015-04-28 | 2019-02-05 | Seari Electric Technology Co., Ltd. | Two-level latch mechanism for operation mechanism of circuit breaker |
DE102015116493B4 (de) | 2015-09-29 | 2021-10-07 | Eaton Intelligent Power Limited | Schutzschaltgerät |
CN106960768B (zh) * | 2016-01-11 | 2019-10-11 | 浙江正泰电器股份有限公司 | 小型断路器的操作机构 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1049484B (es) * | 1959-01-29 | |||
DE589921C (de) * | 1933-12-19 | Wilhelm Leyhausen | Elektromagnetischer UEberstromschalter mit Kniegelenkkontakt | |
DE500098C (de) * | 1926-10-09 | 1930-06-18 | Wilhelm Leyhausen | Elektromagnetischer UEberstromschalter mit Kniehebelkontaktvorrichtung |
DE1904731C3 (de) * | 1969-01-31 | 1975-11-20 | Joseph Dipl.-Ing. 8500 Nuernberg Westermeyer | Elektrischer Kleinselbstschalter |
DE2336222A1 (de) * | 1973-07-17 | 1975-01-30 | Baco Const Elect | Schaltmechanismus fuer selbstschalter |
DE3200325C2 (de) * | 1982-01-08 | 1986-08-21 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Mechanismus für einen Selbstschalter |
DE3339401A1 (de) * | 1983-10-29 | 1985-05-09 | Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co, 8500 Nürnberg | Selbstschalter zum aufsetzen auf schienen |
JPH0755797Y2 (ja) * | 1986-09-09 | 1995-12-20 | 三菱電機株式会社 | 回路しや断器 |
JPH0532922Y2 (es) * | 1986-09-09 | 1993-08-23 | ||
DE3802184A1 (de) * | 1988-01-26 | 1989-08-03 | Licentia Gmbh | Niederspannungsschalter mit sperrlaschen |
FR2649826B1 (fr) * | 1989-07-11 | 1995-11-24 | Merlin Gerin | Mecanisme de commande pour disjoncteur electrique |
-
1991
- 1991-05-18 DE DE4116454A patent/DE4116454A1/de active Granted
-
1992
- 1992-05-06 WO PCT/DE1992/000370 patent/WO1992021134A1/de active IP Right Grant
- 1992-05-06 PL PL92301314A patent/PL168428B1/pl unknown
- 1992-05-06 AT AT92909411T patent/ATE124570T1/de not_active IP Right Cessation
- 1992-05-06 HU HU9303269A patent/HU213962B/hu not_active IP Right Cessation
- 1992-05-06 DE DE59202748T patent/DE59202748D1/de not_active Expired - Fee Related
- 1992-05-06 CZ CZ932455A patent/CZ284710B6/cs not_active IP Right Cessation
- 1992-05-06 ES ES92909411T patent/ES2075697T3/es not_active Expired - Lifetime
- 1992-05-06 EP EP92909411A patent/EP0585261B1/de not_active Expired - Lifetime
- 1992-05-06 RU RU93058452A patent/RU2105376C1/ru active
- 1992-05-08 TR TR00469/92A patent/TR27254A/xx unknown
- 1992-05-11 PT PT100474A patent/PT100474A/pt not_active Application Discontinuation
- 1992-05-12 IL IL10184492A patent/IL101844A/en unknown
- 1992-05-14 EG EG24992A patent/EG19578A/xx active
- 1992-05-15 AR AR92322341A patent/AR247457A1/es active
- 1992-07-01 IE IE921561A patent/IE69031B1/en not_active IP Right Cessation
-
1993
- 1993-11-16 BG BG98224A patent/BG61050B1/bg unknown
-
1996
- 1996-03-07 HK HK41996A patent/HK41996A/xx not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005091323A1 (de) * | 2004-03-17 | 2005-09-29 | Abb Patent Gmbh | Schaltwerk für ein elektrisches installationsschaltgerät |
EP1659604A2 (de) | 2004-11-18 | 2006-05-24 | ABB PATENT GmbH | Installationsschaltgerät |
DE102004055565A1 (de) * | 2004-11-18 | 2006-05-24 | Abb Patent Gmbh | Installationsschaltgerät |
Also Published As
Publication number | Publication date |
---|---|
IL101844A (en) | 1995-03-15 |
PL168428B1 (pl) | 1996-02-29 |
RU2105376C1 (ru) | 1998-02-20 |
EP0585261A1 (de) | 1994-03-09 |
BG61050B1 (bg) | 1996-09-30 |
BG98224A (bg) | 1994-09-30 |
EG19578A (en) | 1995-06-29 |
CZ284710B6 (cs) | 1999-02-17 |
IE921561A1 (en) | 1992-11-18 |
HK41996A (en) | 1996-03-15 |
HU9303269D0 (en) | 1994-03-28 |
DE4116454A1 (de) | 1992-11-19 |
CZ245593A3 (en) | 1994-06-15 |
DE59202748D1 (de) | 1995-08-03 |
TR27254A (tr) | 1994-12-21 |
AR247457A1 (es) | 1994-12-29 |
IL101844A0 (en) | 1992-12-30 |
DE4116454C2 (es) | 1993-04-01 |
IE69031B1 (en) | 1996-08-07 |
PT100474A (pt) | 1994-04-29 |
ATE124570T1 (de) | 1995-07-15 |
WO1992021134A1 (de) | 1992-11-26 |
ES2075697T3 (es) | 1995-10-01 |
HU213962B (en) | 1997-11-28 |
HUT65284A (en) | 1994-05-02 |
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