EP3249674A1 - Latching device and release mechanism - Google Patents
Latching device and release mechanism Download PDFInfo
- Publication number
- EP3249674A1 EP3249674A1 EP17158222.4A EP17158222A EP3249674A1 EP 3249674 A1 EP3249674 A1 EP 3249674A1 EP 17158222 A EP17158222 A EP 17158222A EP 3249674 A1 EP3249674 A1 EP 3249674A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pawl
- verklinkungsfläche
- overload
- release
- movement
- 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
Links
- 238000004146 energy storage Methods 0.000 abstract description 17
- 239000000356 contaminant Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 240000001439 Opuntia Species 0.000 description 1
- 235000004727 Opuntia ficus indica Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
-
- 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
- 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
- H01H73/48—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 having both electrothermal and electromagnetic automatic release
- H01H73/50—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 having both electrothermal and electromagnetic automatic release reset by lever
-
- 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
- H01H9/20—Interlocking, locking, or latching mechanisms
Definitions
- the invention is therefore an object of the invention to provide an overload release available, which can continue to trigger reliably when contaminated.
- the advantage here is that pollution can be absorbed by the created next to the hump depressions in Entklinkungs Scheme. As a result, an increase in friction in the unlatching area is prevented or reduced. Debris settling on the hump can be transported away from the hump by the process of latching. Characterized in that the latch surface or Verklinkungs Structure have a hump, the contact surface between the pawl and power storage is defined in more detail.
- the pawl and the energy accumulator each describe a circular movement about a respective fixed center.
- the line-shaped projection is formed parallel to the direction of movement of the pawl or the energy store.
- FIG. 1 an inventive energy storage 200 is shown.
- the energy storage 200 has a Verklinkungs Colour 201 on.
- a hump 210 is attached on this Verklinkungsisation 201 .
- the hump 210 causes contaminants, which deposit thereon during a triggering process, to be transported into the depressions on the right and left of the hump 210.
- the contact surface of the projection 210 of the energy accumulator 200 is not covered with dirt. It does not increase the friction.
- the overload release 500 comprises a force accumulator 200, which cooperates with a pawl 100, wherein the pawl 100 is provided with a pawl surface 101 and the energy accumulator 200 with a Verklinkungs Colour 201. In the latched state, these two surfaces 101 act; 201 together mechanically. In the unlatched state in case of overload, the latch surface 101 is released from the Verklinkungs Structure 201 to release the movement of the energy storage 200th
- the overload release 500 off FIG. 3 includes a force storage 200 and a pawl 100.
- the pawl 100 cooperates with the energy storage 200 to release the energy stored in the energy storage 200. According to the FIG. 3 this means that the pawl 100 must be rotated counterclockwise to release its fixed center 105 and the energy storage 200 clockwise about its fixed center 205.
- bimetals 501; 502 shown in FIG. 3 are also bimetals 501; 502 shown. These bimetals 501; 502 actuate a trigger slide 300 in case of overload, that they according to the FIG. 3 In case of overload, bend to the left and take the release slide 300 in this direction.
- the Indian FIG. 1 Hump 210 shown on Verklinkungs Chemistry 201 of the energy accumulator 200 cooperates with the pawl surface 101 of the pawl 100. It is advantageous that the hump 210 provides a well-defined support or contact surface on which due to the interaction with the pawl 100 no dirt can be deposited. If soiling is deposited on the hump 210 in the event of triggering, then this contamination is transported away from the hump 210, for example, into the recess next to the hump 210 on the Verklinkungs Colour 201 when latching.
- a projection 110 is arranged on the latch surface 101.
- This projection 110 also offers the same advantages as the projection 210 of the energy accumulator 200. Although contaminants can accumulate on the projection 110 when triggered, this contamination is transported away from the projection 110, eg into the recess next to the projection 110, when latched.
- FIG. 4 an inventive energy storage 200 is shown.
- the energy storage 200 has a Verklinkungs Colour 201.
- On this Verklinkungsisation 201 are a plurality of humps 210; 210a attached.
- the humps 210; 210a cause contaminants, which are deposited thereon during a triggering process, in the recesses on the right and left of the projections 210; 210a can be transported.
- the contact surface of the bosses 210; 210a of the energy storage 200 is not covered with dirt. It does not increase the friction.
- the linear humps 210; 210 a are formed perpendicular to the direction of movement of the pawl 100 or the energy accumulator 200.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Es wird ein Überlastauslöser mit einem Bimetall, einem Auslöseschieber, einer Klinke und einem Kraftspeicher offenbart, wobei bei Überlast - das Bimetall den Auslöseschieber betätigt; - der Auslöseschieber dadurch die Klinke betätigt; und - die Klinke dadurch die Bewegung des Kraftspeichers freigibt. Die Klinke ist mit einer Klinkenfläche versehen und der Kraftspeicher mit einer Verklinkungsfläche, wobei im verklinkten Zustand die beiden Flächen mechanisch zusammenwirken und im entklinkten Zustand bei Überlast die Klinkenfläche von der Verklinkungsfläche gelöst wird zur Freigabe der Bewegung des Kraftspeichers, und wobei die Klinkenfläche oder die Verklinkungsfläche einen Buckel aufweist.It is an overload release with a bimetal, a trigger slide, a pawl and a power storage disclosed, wherein in overload - the bimetal actuates the trigger slide; - The release slide thereby actuates the pawl; and - the pawl thereby releases the movement of the energy storage. The pawl is provided with a latch surface and the energy storage with a Verklinkungsfläche, wherein in the latched state, the two surfaces cooperate mechanically and in the unlatched state in case of overload, the pawl surface is released from the Verklinkungsfläche to release the movement of the energy accumulator, and wherein the latch surface or Verklinkungsfläche has a hump.
Description
Die Erfindung betrifft einen Überlastauslöser.The invention relates to an overload release.
Bei Kompaktleistungsschaltern wirken im Überlastauslöser verschiedene Bimetalle oder Schnellauslöser auf eine Entklinkungsstelle. Diese wird dadurch betätigt und wirkt auf ein Schaltschloss, durch das die elektrischen Kontakte des Kompaktleistungsschalters geöffnet werden.In the case of molded case circuit breakers, various overload bimetals or quick releases act on a unlatching point. This is actuated and acts on a switch lock, through which the electrical contacts of the molded case circuit breaker are opened.
Es besteht die Anforderung, dass ein Kompaktleistungsschalter mehrere Kurzschlüsse abschalten können muss und danach immer noch Überlastauslösungen möglich sind. Durch die Kurzschlüsse wird die Verklinkungsfläche eines Kraftspeichers derartig verschmutzt, dass unverzögerte Auslösungen möglich sind.There is a requirement that a molded case circuit breaker must be able to switch off several short circuits and that overload trips are still possible afterwards. Due to the short circuits the Verklinkungsfläche an energy storage is so dirty that undelayed tripping are possible.
Überlastauslösungen werden in so einem Verschmutzungsfall durch eine erhöhte Reibung aufgrund der Verschmutzung erschwert. Bei herkömmlichen Kompaktleistungsschaltern ist die Auslösekraft zum Entklinken der Auslöseeinheit nach einem Kurzschluss und damit folgender starker Verschmutzung um ein vielfaches höher als vor dem Kurzschluss. Im Entklinkungsbereich sammeln sich Verschmutzungen und erhöhten daher die Reibung signifikant.Overload releases are made more difficult in such a case of contamination by increased friction due to contamination. In conventional molded case circuit breakers, the release force for unlatching the trip unit after a short circuit and thus heavy pollution is many times higher than before the short circuit. In the unlatching area, soiling accumulates and therefore significantly increases the friction.
Dieser Umstand führt dazu, dass die von der Norm geforderte thermische Entklinkung (Überlastauslösung) nach einem Kurzschluss grenzwertig wird. Gehäuft tritt dieses Problem bei Kompaktleistungsschaltern mit hohen Nennströmen auf, beispielsweise bei 125A (Ampere) oder 160A. Bei hohen Nennströmen wird der Kurzschlussstrom schwächer begrenzt als bei niedrigen Nennströmen, was zu einem stärkeren Abbrand des Kontaktmaterials und zu einer höheren Gasentwicklung (Druck) führt. Kompaktleistungsschalter mit niedrigen Nennströmen haben einen höheren Innenwiderstand und begrenzen den Kurzschlussstrom somit stärker. Dies ist aber bei hohen Nennströmen nicht möglich, da die erlaubte Erwärmung im Kundenanschlussbereich durch die Norm vorgegeben ist.This circumstance means that the thermal release required by the standard (overload tripping) becomes borderline after a short circuit. This problem is more common in molded case circuit breakers with high rated currents, for example at 125A (ampere) or 160A. At high rated currents, the short-circuit current is limited to a lesser extent than at low rated currents, which leads to a stronger burn-off of the contact material and to a higher gas evolution (pressure). Compact circuit-breakers with low rated currents have a higher internal resistance and thus limit the short-circuit current more. But this is at high rated currents not possible because the permitted heating in the customer connection area is specified by the standard.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Überlastauslöser zur Verfügung zu stellen, der bei Verschmutzung weiterhin zuverlässig auslösen kann.The invention is therefore an object of the invention to provide an overload release available, which can continue to trigger reliably when contaminated.
Diese Aufgabe wird erfindungsgemäß durch den Überlastauslöser gemäß Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen des erfindungsgemäßen Überlastauslösers sind in Unteransprüchen angegeben.This object is achieved by the overload release according to claim 1. Advantageous embodiments of the overload release according to the invention are specified in subclaims.
Der erfindungsgemäße Überlastauslöser gemäß Anspruch 1 weist ein Bimetall, einen Auslöser, einen Auslöseschieber, eine Klinke und einen Kraftspeicher auf, wobei bei Überlast
- das Bimetall den Auslöseschieber betätigt;
- der Auslöseschieber dadurch die Klinke betätigt; und
- die Klinke dadurch die Bewegung des Kraftspeichers freigibt,
- the bimetal actuates the trigger slide;
- the release slide thereby actuates the pawl; and
- the pawl thereby releases the movement of the energy storage,
Vorteilhaft hierbei ist, dass Verschmutzung von dem neben dem Buckel geschaffenen Vertiefungen im Entklinkungsbereich aufgenommen werden können. Dadurch wird eine Reibungserhöhung im Entklinkungsbereich verhindert bzw. reduziert. Verschmutzungen, die sich auf dem Buckel absetzen, können durch den Prozess der Verklinkung vom Buckel weg transportiert werden. Dadurch, dass die Klinkenfläche oder die Verklinkungsfläche einen Buckel aufweisen, ist die Kontaktfläche zwischen Klinke und Kraftspeicher genauer definiert.The advantage here is that pollution can be absorbed by the created next to the hump depressions in Entklinkungsbereich. As a result, an increase in friction in the unlatching area is prevented or reduced. Debris settling on the hump can be transported away from the hump by the process of latching. Characterized in that the latch surface or Verklinkungsfläche have a hump, the contact surface between the pawl and power storage is defined in more detail.
In einer Ausgestaltung ist der Buckel der Klinkenfläche oder der Verklinkungsfläche als linienförmige Erhöhung auf der Klinkenfläche oder Verklinkungsfläche ausgebildet.In one embodiment, the projection of the latch surface or the Verklinkungsfläche is formed as a linear increase on the latch surface or Verklinkungsfläche.
In einer weiteren Ausgestaltung ist der linienförmige Buckel senkrecht zur Bewegungsrichtung der Klinke oder des Kraftspeichers ausgebildet.In a further embodiment, the linear hump is formed perpendicular to the direction of movement of the pawl or the energy storage device.
In einer weiteren Ausgestaltung beschreiben die Klinke und der Kraftspeicher jeweils eine kreisförmige Bewegung um jeweils einen festen Mittelpunkt.In a further embodiment, the pawl and the energy accumulator each describe a circular movement about a respective fixed center.
In einer weiteren Ausgestaltung ist der linienförmige Buckel parallel zur Bewegungsrichtung der Klinke oder des Kraftspeichers ausgebildet.In a further embodiment, the line-shaped projection is formed parallel to the direction of movement of the pawl or the energy store.
Die oben beschriebenen Eigenschaften, Merkmale und Vorteile dieser Erfindung, so wie die Art und Weise, wie sie erreicht werden, werden klarer und deutlicher verständlich in Zusammenhang mit der folgenden Beschreibung der Ausführungsbeispiele, die in Zusammenhang mit den Figuren näher erläutert werden.
- Figur 1
- Kraftspeicher mit Buckel;
- Figur 2
- Klinke mit Buckel auf der Klinkenfläche;
- Figur 3
- Überlastauslöser mit Kraftspeicher und Klinke; und
- Figur 4
- Variante der buckelartigen Verklinkungsfläche mit parallel zur Bewegungsrichtung der Klinke angeordnetem Buckel.
- FIG. 1
- Power storage with hump;
- FIG. 2
- Latch with hump on the latch surface;
- FIG. 3
- Overload release with energy storage and latch; and
- FIG. 4
- Variant of the buckle-like Verklinkungsfläche arranged parallel to the direction of movement of the latch hump.
In
In
Im Falle eines Kurzschlusses werden Verschmutzungen im Inneren des Schalters erzeugt. Entsprechend der
Der Überlastauslöser 500 aus
In
Der Auslöseschieber 300 wirkt beispielsweise über einen Umlenker 1100 auf die Klinke 100. Dadurch wird die Klinke 100 um ihren festen Mittelpunkt 105 gedreht gegen den Uhrzeigersinn. Die lineare Bewegung des Auslöseschiebers 300 wird in eine kreisförmige Bewegung der Klinke 100 umgesetzt. Der Auslöseschieber 300 betätigt direkt oder indirekt die Klinke 100.The
Der in der
Gemäß
Der Überlastauslöser 500 aus
Das Bimetall 501; 502betätigt den Auslöseschieber 300;der Auslöseschieber 300 betätigt dadurch dieKlinke 100 und dieKlinke 100 gibt dadurch die Bewegung desKraftspeichers 200 frei. Beispielsweise kann derAuslöseschieber 300 eine lineare Bewegung beschreiben.Klinke 100und Kraftspeicher 200 beschreiben jeweils eine kreisförmige Bewegung um jeweils einen festen Mittelpunkt 105; 205.
- The bimetal 501; 502 actuates the
trigger slide 300; thetrigger slide 300 thereby actuates thepawl 100, and thepawl 100 thereby releases the movement of theforce accumulator 200. For example, thetrigger slider 300 may be a linear one Describe movement.Pawl 100 andenergy accumulator 200 each describe a circular movement about each fixedcenter 105; 205th
In
Die linienförmigen Buckel 210; 210a sind senkrecht zur Bewegungsrichtung der Klinke 100 oder des Kraftspeichers 200 ausgebildet.The
Die Verklinkungskontur, entweder der Klinke 100 oder des Kraftspeichers 200, wurde umkonstruiert, um die Verklinkung unanfällig für Verschmutzung und Fertigungstoleranzen zu gestalten. Dafür wurde ein Buckel 110; 210 geschaffen, der eine definierte Auflagefläche erzeugt und über eine Längsrille bzw. Vertiefung verfügt, die Verschmutzungen auffangen kann. Dadurch wird eine Reibungserhöhung im Entklinkungsbereich verhindert bzw. reduziert.The Verklinkungskontur, either the
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016208930.7A DE102016208930A1 (en) | 2016-05-24 | 2016-05-24 | Overload release |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3249674A1 true EP3249674A1 (en) | 2017-11-29 |
EP3249674B1 EP3249674B1 (en) | 2023-09-13 |
Family
ID=58185441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17158222.4A Active EP3249674B1 (en) | 2016-05-24 | 2017-02-27 | Latching device and release mechanism |
Country Status (4)
Country | Link |
---|---|
US (1) | US10347454B2 (en) |
EP (1) | EP3249674B1 (en) |
CN (1) | CN107424880B (en) |
DE (1) | DE102016208930A1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB686516A (en) * | 1950-07-15 | 1953-01-28 | Landis & Gyr Sa | An improvement in automatic electric circuit breakers with time lag thermal release |
DE1858351U (en) * | 1962-07-16 | 1962-09-13 | Busch Jaeger Duerener Metall | LOCKING LOCK IN RELEASE DEVICES. |
FR2258698A1 (en) * | 1974-01-22 | 1975-08-18 | Unelec | |
EP0035693A1 (en) * | 1980-03-06 | 1981-09-16 | BROWN, BOVERI & CIE Aktiengesellschaft Mannheim | Switching mechanism for electrical installation switch gear |
US4622530A (en) * | 1983-06-02 | 1986-11-11 | General Electric Company | Circuit breaker assembly for high speed manufacture |
DE3545490A1 (en) * | 1985-12-20 | 1987-07-02 | Siemens Ag | Latching mechanism for electrical switching apparatuses |
DE3619242A1 (en) * | 1986-06-07 | 1987-12-10 | Kloeckner Moeller Elektrizit | Switching mechanism for a line protection circuit breaker |
US5059933A (en) * | 1990-09-14 | 1991-10-22 | General Electric Company | Molded case circuit breaker operating cradle configuration |
DE202016001905U1 (en) * | 2016-03-23 | 2016-05-03 | Siemens Aktiengesellschaft | Latch and overload release |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6181226B1 (en) * | 1999-11-05 | 2001-01-30 | Siemens Energy & Automation, Inc. | Bi-metal trip unit for a molded case circuit breaker |
US6255925B1 (en) * | 2000-02-18 | 2001-07-03 | Siemens Energy & Automation, Inc. | Thermal-magnetic trip unit with adjustable magnetic tripping |
CN100464387C (en) | 2006-12-15 | 2009-02-25 | 大全集团有限公司 | Break tripping device |
EP1995754B1 (en) * | 2007-05-23 | 2013-09-04 | Abb Ag | Electric installation switching device |
US8830026B2 (en) * | 2010-12-30 | 2014-09-09 | General Electric Company | Shape memory alloy actuated circuit breaker |
DE102012203294A1 (en) | 2012-03-02 | 2013-09-05 | Siemens Aktiengesellschaft | Switch lock of a circuit breaker |
EP2897152B1 (en) * | 2014-01-17 | 2017-03-29 | Siemens Aktiengesellschaft | Thermal trip device, switching device, thermal magnetic circuit breaker and method for protecting an electric circuit |
EP2905800A1 (en) * | 2014-02-11 | 2015-08-12 | Siemens Aktiengesellschaft | Thermal trip device, switching device, thermal magnetic circuit breaker and method for protecting an electrical circuit from damage |
-
2016
- 2016-05-24 DE DE102016208930.7A patent/DE102016208930A1/en not_active Withdrawn
-
2017
- 2017-02-27 EP EP17158222.4A patent/EP3249674B1/en active Active
- 2017-03-20 US US15/463,178 patent/US10347454B2/en active Active
- 2017-05-22 CN CN201710362800.1A patent/CN107424880B/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB686516A (en) * | 1950-07-15 | 1953-01-28 | Landis & Gyr Sa | An improvement in automatic electric circuit breakers with time lag thermal release |
DE1858351U (en) * | 1962-07-16 | 1962-09-13 | Busch Jaeger Duerener Metall | LOCKING LOCK IN RELEASE DEVICES. |
FR2258698A1 (en) * | 1974-01-22 | 1975-08-18 | Unelec | |
EP0035693A1 (en) * | 1980-03-06 | 1981-09-16 | BROWN, BOVERI & CIE Aktiengesellschaft Mannheim | Switching mechanism for electrical installation switch gear |
US4622530A (en) * | 1983-06-02 | 1986-11-11 | General Electric Company | Circuit breaker assembly for high speed manufacture |
DE3545490A1 (en) * | 1985-12-20 | 1987-07-02 | Siemens Ag | Latching mechanism for electrical switching apparatuses |
DE3619242A1 (en) * | 1986-06-07 | 1987-12-10 | Kloeckner Moeller Elektrizit | Switching mechanism for a line protection circuit breaker |
US5059933A (en) * | 1990-09-14 | 1991-10-22 | General Electric Company | Molded case circuit breaker operating cradle configuration |
DE202016001905U1 (en) * | 2016-03-23 | 2016-05-03 | Siemens Aktiengesellschaft | Latch and overload release |
Also Published As
Publication number | Publication date |
---|---|
CN107424880A (en) | 2017-12-01 |
US20170345599A1 (en) | 2017-11-30 |
DE102016208930A1 (en) | 2017-11-30 |
US10347454B2 (en) | 2019-07-09 |
CN107424880B (en) | 2020-03-20 |
EP3249674B1 (en) | 2023-09-13 |
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