EP0885449B1 - Power switch with insulating contact lever carrier - Google Patents
Power switch with insulating contact lever carrier Download PDFInfo
- Publication number
- EP0885449B1 EP0885449B1 EP97915338A EP97915338A EP0885449B1 EP 0885449 B1 EP0885449 B1 EP 0885449B1 EP 97915338 A EP97915338 A EP 97915338A EP 97915338 A EP97915338 A EP 97915338A EP 0885449 B1 EP0885449 B1 EP 0885449B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing bolt
- contact
- locking
- contact lever
- lever carrier
- 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
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 230000004888 barrier function Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
-
- 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
- H01H9/48—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
Definitions
- the invention relates to an electrical circuit breaker with a movable contact arrangement and with a Actuating contact arrangement for switching on and off Drive device with the contact arrangement by a Drive lever is articulated, being in an insulating Contact lever carrier of the contact arrangement one Cross hole for receiving the drive lever with the Contact arrangement connecting bearing pin is arranged and the bearing pin against removal from the cross hole a locking screw is secured.
- a circuit breaker with the features mentioned is in essentially known from DE 44 16 105 C1.
- the locking screw is conductive with the bearing pin Connection. This not only includes the one with the drive lever bearing bolts in contact, but also the Locking screw to the elements that make up the electrical field design within the contact lever carrier.
- the invention is based on the object dielectric strength of the movable contact arrangement increase and thereby the given dimensions Improve security against electrical faults.
- the stated object is achieved that on the contact lever carrier axially the bearing pin blocking, made of insulating plastic Locking piece is attached by means of the locking screw. To this Way, the bearing pin receiving the transverse bore Contact lever carrier with an insulating part, namely closed by the locking piece. This will make the Creepage distances on the contact lever carrier increased.
- Another dielectric improvement can be achieved by that the locking screw in a right angle to the Transverse hole arranged engaging and in a distance from the bearing pin is arranged ending. in the Difference to the previous design of the contact lever carrier the screw therefore no longer acts on Grounded electrode.
- the locking piece for the bearing pin can be used as a protective device Covering an access to the head of the bearing pin providing mounting opening of the contact lever carrier be. This measure also works in the sense of Enlargement of the creepage distances.
- the locking piece can have a rib for mutual Support of an upstream of the head piece of the bearing pin Barrier and one filling the assembly opening Have locking legs.
- the rib acts as a stiffener and therefore allows the production of the locking piece as lightweight plastic molding.
- Figure 1 shows a schematic representation Low-voltage circuit breakers on average.
- FIG. 2 shows a contact lever carrier shown in FIG. 1 on a larger scale and partly in section.
- Figure 3 is an illustration of section III-III in Figure 2.
- the low-voltage circuit breaker shown schematically in FIG. 1 1 has a movable contact arrangement 2 to which a connecting bar 3, flexible current strips 4th and include at least one movable contact lever 5.
- a Contact lever carrier 6 is by a drive device 7, an actuated shift shaft 10 and drive lever 11 for Swiveling on and off.
- the movable contact lever 5 interacts with a fixed counter contact 12, which with a further connecting rail 13 in connection stands.
- FIGS. 2 and 3 Details of the connection of the drive lever 11 with the Contact lever carriers 6 are described below with reference to FIGS. 2 and 3 described in more detail.
- a locking piece 15 is located at the Mounting opening accessible from the top of the contact lever carrier 6 14 shown, in which a locking piece 15 is located.
- Located in a transverse bore 16 of the contact lever carrier 6 a bearing pin 17, which has a bearing opening of the drive lever 11 enforced.
- two parallel drive lever 11 for power transmission to the contact lever carrier 6 are provided.
- a barrier 20 of the Locking piece 15 is located in front of a head piece 21 of the Bearing pin 17 and secures it against axial displacement in the transverse bore 16.
- a locking screw 22 engages in a receiving opening 23 of the Contact lever carrier 6 and passes through a through hole a locking leg 24 of the locking piece 15. How can be seen in particular from Figure 3, the Lock leg 24 of the locking piece 15, the assembly opening 14 of the contact lever carrier 6.
- a rib 26 extends between the closure leg 24 and the barrier 20. Is over part of its length the rib 26 at a mounting opening 14 delimiting Wall surface 25 of the contact lever carrier 6. From the bearing pin 17 outgoing axial forces are thus under Bypassing the locking screw 22 directly into the contact lever carrier 6 initiated.
- connection is between the contact lever carrier 6 and the drive lever 11 in a simple manner by inserting the bearing pin 17 to produce in the transverse bore 16.
- This is the assembly opening 14 provided with a lateral mouth 27.
- the locking piece 15 from above into the assembly opening 14 inserted, which is only possible if the Barrier 20 on the head piece 21 of the bearing pin 17 step past can.
- the locking screw 22nd likewise inserted into the mounting opening 14 from above.
- the Locking screw 22 is of such a length that sufficient Attachment is achieved, but still a distance to the bearing pin 17. So that the locking screw 22 not in conductive connection with the bearing pin 17 get, which in turn on the drive lever 11 with the Grounding drive device 7 is.
- the Locking screw 22 can therefore not act as an electrode.
Landscapes
- Breakers (AREA)
- Slide Switches (AREA)
Description
Die Erfindung betrifft einen elektrischen Leistungsschalter mit einer bewegbaren Kontaktanordnung und mit einer die Kontaktanordnung zum Ein- und Ausschalten betätigenden Antriebsvorrichtung, die mit der Kontaktanordnung durch einen Treibhebel gelenkig verbunden ist, wobei in einem isolierenden Kontakthebelträger der Kontaktanordnung eine Querbohrung zur Aufnahme eines den Treibhebel mit der Kontaktanordnung verbindenden Lagerbolzens angeordnet ist und der Lagerbolzen gegen Enfernung aus der Querbohrung durch eine Sperrschraube gesichert ist.The invention relates to an electrical circuit breaker with a movable contact arrangement and with a Actuating contact arrangement for switching on and off Drive device with the contact arrangement by a Drive lever is articulated, being in an insulating Contact lever carrier of the contact arrangement one Cross hole for receiving the drive lever with the Contact arrangement connecting bearing pin is arranged and the bearing pin against removal from the cross hole a locking screw is secured.
Ein Leistungsschalter mit den genannten Merkmalen ist im wesentlichen durch die DE 44 16 105 C1 bekanntgeworden. Die Sperrschraube steht dabei mit dem Lagerbolzen in leitender Verbindung. Hierdurch gehört nicht nur der mit dem Treibhebel in Berührung stehende Lagerbolzen, sondern auch die Sperrschraube zu den Elementen, die das elektrische Feld innerhalb des Kontakthebelträgers gestalten. In diesem Zusammenhang liegt der Erfindung die Aufgabe zugrunde, die dielektrische Festigkeit der bewegbaren Kontaktanordnung zu steigern und hierdurch bei gegebenen Abmessungen die Sicherheit gegen elektrische Fehler zu verbessern.A circuit breaker with the features mentioned is in essentially known from DE 44 16 105 C1. The The locking screw is conductive with the bearing pin Connection. This not only includes the one with the drive lever bearing bolts in contact, but also the Locking screw to the elements that make up the electrical field design within the contact lever carrier. In this Context, the invention is based on the object dielectric strength of the movable contact arrangement increase and thereby the given dimensions Improve security against electrical faults.
Gemäß der Erfindung wird die genannte Aufgabe dadurch gelöst, daß an dem Kontakthebelträger ein den Lagerbolzen axial blockierendes, aus isolierendem Kunststoff bestehendes Sperrstück mittels der Sperrschraube befestigt ist. Auf diese Weise wird die den Lagerbolzen aufnehmende Querbohrung des Kontakthebelträgers mit einem isolierenden Teil, nämlich durch das Sperrstück, verschlossen. Hierdurch werden die Kriechwege an dem Kontakthebelträger vergrößert.According to the invention, the stated object is achieved that on the contact lever carrier axially the bearing pin blocking, made of insulating plastic Locking piece is attached by means of the locking screw. To this Way, the bearing pin receiving the transverse bore Contact lever carrier with an insulating part, namely closed by the locking piece. This will make the Creepage distances on the contact lever carrier increased.
Eine weitere dielektrische Verbesserung ist dadurch zu erreichen, daß die Sperrschraube in eine rechtwinklig zu der Querbohrung angeordnete Aufnahmeöffnung eingreifend und in einem Abstand von dem Lagerbolzen endend angeordnet ist. Im Unterschied zu der bisherigen Gestaltung des Kontakthebelträgers wirkt daher die Schraube nicht mehr als auf Erdpotential befindliche Elektrode.Another dielectric improvement can be achieved by that the locking screw in a right angle to the Transverse hole arranged engaging and in a distance from the bearing pin is arranged ending. in the Difference to the previous design of the contact lever carrier the screw therefore no longer acts on Grounded electrode.
Das Sperrstück für den Lagerbolzen kann als Schutzorgan zur Abdeckung einer den Zugang zu dem Kopfstück des Lagerbolzens gewährenden Montageöffnung des Kontakthebelträgers ausgebildet sein. Diese Maßnahme wirkt gleichfalls im Sinne einer Vergrößerung der Kriechwege.The locking piece for the bearing pin can be used as a protective device Covering an access to the head of the bearing pin providing mounting opening of the contact lever carrier be. This measure also works in the sense of Enlargement of the creepage distances.
Ferner kann das Sperrstück eine Rippe zur gegenseitigen Abstützung eines dem Kopfstück des Lagerbolzens vorgelagerten Sperrsteges und eines die Montageöffnung ausfüllenden Verschlußschenkels aufweisen. Die Rippe wirkt als Versteifung und gestattet daher die Herstellung des Sperrstückes als leichtes Kunststoff-Formteil.Furthermore, the locking piece can have a rib for mutual Support of an upstream of the head piece of the bearing pin Barrier and one filling the assembly opening Have locking legs. The rib acts as a stiffener and therefore allows the production of the locking piece as lightweight plastic molding.
Die Erfindung wird im folgenden anhand der Figuren näher erläutert. The invention is explained in more detail below with reference to the figures explained.
Die Figur 1 zeigt in schematischer Darstellung einen Niederspannungs-Leistungsschalter im Schnitt.Figure 1 shows a schematic representation Low-voltage circuit breakers on average.
Die Figur 2 zeigt einen in der Figur 1 dargestellten Kontakthebelträger in größerem Maßstab und teilweise im Schnitt.FIG. 2 shows a contact lever carrier shown in FIG. 1 on a larger scale and partly in section.
Die Figur 3 ist eine Darstellung des Schnittes III-III in Figur 2.Figure 3 is an illustration of section III-III in Figure 2.
Der in der Figur 1 schematisch dargestellte Niederspannungs-Leistungsschalter
1 weist eine bewegbare Kontaktanordnung 2
auf, zu der eine Anschlußschiene 3, biegsame Strombänder 4
und wenigstens ein bewegbarer Kontakthebel 5 gehören. Ein
Kontakthebelträger 6 ist durch eine Antriebsvorrichtung 7,
eine hiervon betätigte Schaltwelle 10 sowie Treibhebel 11 zum
Ein- und Ausschalten schwenkbar. Der bewegbare Kontakthebel 5
wirkt dabei mit einem ortsfesten Gegenkontakt 12 zusammen,
der mit einer weiteren Anschlußschiene 13 in Verbindung
steht.The low-voltage circuit breaker shown schematically in FIG. 1
1 has a movable contact arrangement 2
to which a connecting
Einzelheiten der Verbindung des Treibhebels 11 mit dem
Kontakthebelträger 6 werden im folgenden anhand der Figuren 2
und 3 näher beschrieben. In diesen Figuren ist eine an der
Oberseite des Kontakthebelträgers 6 zugängliche Montageöffnung
14 gezeigt, in der sich ein Sperrstück 15 befindet.
In einer Querbohrung 16 des Kontakthebelträgers 6 befindet
sich ein Lagerbolzen 17, der eine Lageröffnung des Treibhebels
11 durchsetzt. In der Figur 3 ist angedeutet, daß zwei
parallele Treibhebel 11 zur Kraftübertragung auf den Kontakthebelträger
6 vorgesehen sind. Ein Sperrsteg 20 des
Sperrstückes 15 befindet sich vor einem Kopfstück 21 des
Lagerbolzens 17 und sichert diesen gegen axiale Verschiebung
in der Querbohrung 16.Details of the connection of the
Eine Sperrschraube 22 greift in eine Aufnahmeöffnung 23 des
Kontakthebelträgers 6 ein und durchsetzt eine Durchgangsöffnung
eines Verschlußschenkels 24 des Sperrstückes 15. Wie
insbesondere der Figur 3 zu entnehmen ist, füllt der
Verschlußschenkel 24 des Sperrstückes 15 die Montageöffnung
14 des Kontakthebelträgers 6 aus.A
Eine Rippe 26 erstreckt sich zwischen dem Verschlußschenkel
24 und dem Sperrsteg 20. Über einen Teil seiner Länge liegt
die Rippe 26 an einer die Montageöffnung 14 begrenzenden
Wandfläche 25 des Kontakthebelträgers 6 an. Von dem Lagerbolzen
17 evtl. ausgehende Axialkräfte werden damit unter
Umgehung der Sperrschraube 22 direkt in den Kontakthebelträger
6 eingeleitet.A
Wie insbesondere die Figur 3 erkennen läßt, ist die Verbindung
zwischen dem Kontakthebelträger 6 und den Treibhebel
11 auf einfache Weise durch Einschieben des Lagerbolzens 17
in die Querbohrung 16 herzustellen. Hierzu ist die Montageöffnung
14 mit einer seitlichen Mündung 27 versehen. Anschließend
wird das Sperrstück 15 von oben in die Montageöffnung
14 eingelegt, was nur dann möglich ist, wenn der
Sperrsteg 20 an dem Kopfstück 21 des Lagerbolzens 17 vorbeitreten
kann. Anschließend wird die Sperrschraube 22
gleichfalls von oben in die Montageöffnung 14 eingeführt. Die
Sperrschraube 22 besitzt eine solche Länge, daß eine ausreichende
Befestigung erzielt wird, jedoch noch ein Abstand
zu dem Lagerbolzen 17 besteht. Damit kann die Sperrschraube
22 nicht in leitende Verbindung mit dem Lagerbolzen 17
gelangen, der seinerseits über die Treibhebel 11 mit der auf
Erdpotential befindlichen Antriebsvorrichtung 7 steht. Die
Sperrschraube 22 kann somit nicht als Elektrode wirken.As can be seen in particular in FIG. 3, the connection is
between the
Claims (4)
- Electric circuit-breaker (1) with a movable contact arrangement (2) and with a drive device (7) which actuates the contact arrangement (2) to make or break and which is connected in an articulated fashion to the contact arrangement (2) by a driving lever (11), it being the case that a transverse bore (16) for receiving a bearing bolt (17) connecting the driving lever (11) to the contact arrangement (2) is arranged in an insulating contact lever carrier (6) of the contact arrangement (2), and that the bearing bolt (17) is secured against removal from the transverse bore (16) by a locking screw (22), characterized in that a locking piece (15) which blocks the bearing bolt (17) axially and consists of insulating plastic is fastened to the contact lever carrier (6) by means of the locking screw (22).
- Circuit-breaker according to Claim 1, characterized in that the locking screw (22) is arranged to engage in a receiving opening (23) arranged at right angles to the transverse bore (16), and to stop a spacing from the bearing bolt (17).
- Circuit-breaker according to Claim 1 or 2, characterized in that the locking piece (15) is constructed as a protective member for covering a mounting opening (14) of the contact lever carrier (6) which allows access to a head piece (21) of the bearing bolt (17).
- Circuit-breaker according to Claim 3, characterized in that the locking piece (15) has a rib (26) for mutually supporting a locking web (20), extending in front of the head piece (21) of the bearing bolt (17), and a sealing limb (24) filling up the mounting opening (14).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29605081U | 1996-03-08 | ||
| DE29605081U DE29605081U1 (en) | 1996-03-08 | 1996-03-08 | Circuit breaker with isolating contact lever carrier |
| PCT/DE1997/000436 WO1997033290A2 (en) | 1996-03-08 | 1997-02-28 | Power switch with insulating contact lever carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0885449A1 EP0885449A1 (en) | 1998-12-23 |
| EP0885449B1 true EP0885449B1 (en) | 1999-09-01 |
Family
ID=8021325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97915338A Expired - Lifetime EP0885449B1 (en) | 1996-03-08 | 1997-02-28 | Power switch with insulating contact lever carrier |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0885449B1 (en) |
| DE (2) | DE29605081U1 (en) |
| IN (1) | IN191379B (en) |
| WO (1) | WO1997033290A2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19836754B4 (en) * | 1998-08-13 | 2006-10-05 | Aeg Niederspannungstechnik Gmbh & Co Kg | Switch shaft unit for switches |
| DE10127552B4 (en) * | 2001-06-01 | 2007-01-04 | Siemens Ag | Method for coupling the switching shaft of a low-voltage circuit breaker with a movable contact carrier |
| KR200438185Y1 (en) * | 2006-12-29 | 2008-01-29 | 엘에스산전 주식회사 | Breaker Component Connections |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3679291D1 (en) * | 1985-10-31 | 1991-06-20 | Merlin Gerin | KINEMATIC TRANSMISSION CHAIN BETWEEN THE CONTROL MECHANISM AND THE POLES OF AN ELECTRIC LOAD SWITCH WITH A SPRAYED INSULATION HOUSING. |
| DE4416105C1 (en) * | 1994-04-19 | 1995-05-24 | Siemens Ag | LV power switch |
-
1996
- 1996-03-08 DE DE29605081U patent/DE29605081U1/en not_active Expired - Lifetime
-
1997
- 1997-02-28 WO PCT/DE1997/000436 patent/WO1997033290A2/en active IP Right Grant
- 1997-02-28 DE DE59700394T patent/DE59700394D1/en not_active Expired - Fee Related
- 1997-02-28 EP EP97915338A patent/EP0885449B1/en not_active Expired - Lifetime
- 1997-03-04 IN IN380CA1997 patent/IN191379B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE59700394D1 (en) | 1999-10-07 |
| EP0885449A1 (en) | 1998-12-23 |
| WO1997033290A2 (en) | 1997-09-12 |
| IN191379B (en) | 2003-11-29 |
| WO1997033290A3 (en) | 2001-09-13 |
| DE29605081U1 (en) | 1996-06-05 |
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