DE102009025519A1 - Shutter release with a release mechanism that can be switched to either U or A release - Google Patents

Abstract

The invention relates to a trigger (1) for an electrical switching device with a trigger housing (11) and an electromagnetic exciter arranged in the trigger housing (11), consisting of an excitation coil (31) and a movable armature (33), and one in the trigger housing (11 ) arranged, with the armature (33) operatively connected trigger mechanism (5). In order to ensure an optional changeover as undervoltage or shunt release as inexpensively as possible, the release mechanism (5) consists of: - an actuator (51) with at least one actuator connection (511) that can be pushed back and forth with respect to the release housing (11), - a release unit (54), which has a trigger pin (541), - a rocker arm (53) which is pivotably mounted in a rocker arm receptacle (521) spaced with respect to the axis of movement of the trigger pin (541), the rocker arm (53) having two free rocker arm ends, wherein the first rocker arm end is pivotally operatively connected to the actuator connection (511) and the second rocker arm end is pivotally connected to the release unit (54), - a pin receptacle (522) which guides the release unit (54) essentially perpendicular to the translatory direction of movement of the actuator (51), and is characterized in that the rocker arm receptacle (521) by one by the release pin (54 1) extending axis is rotatably supported and is adjustable in at least two different positions.

Description

The The invention relates to a trigger for an electrical Switchgear with a shutter housing and a arranged in the trigger housing electromagnetic Exciter, consisting of an exciting coil and a movable one Anchor, as well as one arranged in the trigger housing, Activation mechanism operatively connected to the anchor.

in the State of the art are additional modules for circuit breakers known. These additional modules are also used as triggers or triggers are called and are over one mechanical transmission unit with the circuit breaker operatively connected. Auxiliary releases can be used as a shunt release or undervoltage release can be used and point a solenoid and an armature. A mechanical release system transmits the position of the armature on the switch lock of the circuit breaker.

Becomes the auxiliary release operated as shunt release, causes a high current flow through the coil that attracts the anchor and via the triggering system the switch lock of the Circuit breaker triggers.

Of the Anchor of an auxiliary release operated as an undervoltage release drops when voltage falls below and acts over the mechanical release system also on the switch lock of the Circuit breaker on.

Out Many auxiliary triggers are known in the prior art, which by the different arrangement of the magnetic and / or mechanical components during assembly optionally as shunt release or undervoltage release can be operated.

The DE 100 04 597 A1 discloses an auxiliary release which is laterally attachable to a circuit breaker housing. A solenoid with swivel lever armature acts via a driving swivel lever on the switch lock of the circuit breaker. Depending on the application, the solenoid coil with swivel armature is installed offset in each case by 180 ° as a shunt release or undervoltage release. As a result, the tightening of the pivot lever armature in the event of overcurrent and the falling off of the pivot lever armature in the case of undervoltage are transmitted in the same direction as mechanical movement.

The DE 42 42 162 A1 describes an optionally operable as a working current or undervoltage release Hilfsaulöser, in which case only the armature and the mechanical transmission member is installed offset by 180 ° for the conversion.

The FR 1 637 121 also discloses an auxiliary release with a magnetic coil and an associated swivel armature, whereby also here the installation according to the application as Arbeitsstrom- or undervoltage release is rotated by 180 °.

Also known in the art are auxiliary releases from the company Moeller, which can be operated by the conversion of the release mechanism either as shunt release or undervoltage release. The release pin, which mechanically engages the switching mechanism of a circuit breaker, is moved via a rocker mechanism, which converts the translational movement of the armature into a lifting movement (see 1a and 1b such as 2a and 2 B ). The toggle mechanism is implemented according to the application of the auxiliary switch as shunt release or undervoltage release. In 1a and 1b the schematic diagram of an undervoltage release is shown. 1a shows the undervoltage release in the non-tripped position. The actor 51 ' , which is connected to the anchor, is at rest. The armature is tightened in this case. The trigger pin 541 ' is inside the shutter housing 11 ' , If a threshold voltage is exceeded, the armature detaches from the magnetic core and is moved via a spring into the release position ( 1b ). The actor 51 ' is translated translationally and acts via the actuator connection 511 ' on a rocker arm 53 ' , The rocker arm 53 ' tilts over the center in the rocker arm 53 ' mounted rocker pin 532 ' in a rocker arm receptacle 521 ' is rotatably mounted. The rocker arm 53 ' moves when tilted in a pen holder 522 ' guided release pin 541 ' out of the shutter housing 11 ' out. The trigger pin 541 ' acts on a switching mechanism of a switching device attached to the trigger and triggers the switching mechanism.

2a and 2 B show the trigger as a shunt release, which is to trigger a switching device when exceeding the current flowing through the trigger. The rocker arm 53 ' is in this case in a second rocker arm receptacle 521 '' assembled. By an overcurrent of the armature of the electromagnetic exciter is attracted and acts on the actuator 51 ' which performs a translatory movement. The actor 51 ' is pulled in the opposite direction. The rocker arm 53 ' Tilts and pushes the trigger pin 541 ' out of the shutter housing 11 ' out. The switching device is switched off.

It is therefore always necessary to open the auxiliary release housing in order to install or modify the components according to the application. So that a user on site the conversion of a Hilfsaulösers can accomplish, the housing must be designed so that a repeated opening and closing can be performed. The user on site must also have technical knowledge in order to be able to carry out any reconstruction work safely. Errors during the reconstruction of an auxiliary release can not be ruled out. As a result, there is a high probability of failure due to lack of technical skill.

task The invention is an inexpensive trigger to provide the optional without additional installation effort and easy to use as shunt release or undervoltage release is.

According to the invention the object is achieved by a device according to claim 1. Advantageous embodiments of the device result from the dependent claims.

The The invention relates to a trigger for an electrical Switchgear with a shutter housing and a arranged in the trigger housing electromagnetic Exciter, consisting of an exciting coil and a movable one Anchor, as well as one arranged in the trigger housing, Activation mechanism operatively connected to the anchor. The inventive Triggering mechanism consists of a translational relative the shutter housing forward and zurückschiebbaren Actuator with at least one actuator connection and a trip unit, which has a release pin. Furthermore, the trigger mechanism a rocker arm, which in a respect to the axis of movement the trigger pin spaced rocker arm receptacle pivotally mounted is. The rocker arm has two free Kipphebelarmenden, wherein the first Kipphebelarmende with the actuator connection and the second Kipphebelarmende pivotally operatively connected to the trip unit are. Furthermore, the release mechanism according to the invention a pin receptacle on which the trip unit substantially perpendicular to the translational movement direction of the actuator leads. The trigger according to the invention is characterized characterized in that the rocker arm receptacle around one by the release pin extending axis is rotatably mounted and in at least two different positions is adjustable.

It has proved to be particularly advantageous that the trip unit a release pin has that with a pin bearing pivotally connected to the second Kipphebelarmende the rocker arm is.

advantageously, are the pin holder and the rocker arm receptacle on a pivot bearing arranged. A particularly preferred embodiment is that the pin receptacle and the rocker arm receptacle with the pivot bearing are integrally formed. This will be a special high stability of the pivot bearing generated. The production becomes particularly cost effective due to the reduction in the number of pieces. Likewise, the storage costs are reduced.

In a further, particularly advantageous embodiment According to the invention, the rotary bearing has an adjusting head on the axis of rotation of the pivot bearing, which through the auxiliary release housing is operable from the outside. An advantage of the invention is that the Hilfsaulösergehäuse not open must be to either an undervoltage release or to set a shunt release. This can do that Housing be tightly closed and requires no opening mechanisms, like screws and hinges. The case can therefore be very be produced inexpensively.

Farther has proven to be advantageous that the actuator connection is formed part-circular in such a way that the two Ends of the part-circular actuator connection attached to the actuator are. Furthermore, it has proved to be advantageous that the circle center the part-circular actuator connection in the longitudinal axis the release pin is located. As a result, the rocker arm is at the rotation of the rocker arm receptacle constantly with the Aktoranbindung and a variety of different positions realized the actuator connection. The lifting movement of the release pin depends on the position of the rocker arm to teilkreisförmigen Actuator connections. It can thus different strokes the release pin can be realized.

By looking out of the auxiliary release housing Adjusting head, the user can recognize whether the auxiliary release as shunt release or as undervoltage release has been set when the auxiliary shutter housing labeled around the adjustment head.

By Locking means, the rotation of the pivot bearing within the auxiliary release be snapped so that the user has the opportunity to Limit stroke movement of the release pin and the pivot bearing safe in the position as undervoltage or overcurrent release to keep . This may be necessary when using the trigger pin Circuit breaker Switch locks with different geometries exhibit. Due to the predetermined detent, the user can make the pivot bearing more accurate to adjust.

Another advantage of the invention is that can be made neutral by rotation of the adjusting head by 90 ° in the middle position between shunt release and undervoltage release of the auxiliary release, so no tripping This occurs when undervoltage or overcurrent is present. This makes it possible to perform maintenance on the system without disconnecting the auxiliary release.

Further Advantages, special features and expedient further education The invention will become apparent from the dependent claims and the following description of preferred embodiments based on the pictures.

From the pictures shows:

1 two schematic views of a tripping mechanism of the prior art for an undervoltage release;

2 two schematic views of a tripping mechanism of the prior art for a shunt trip;

3 two schematic views of an embodiment of an inventive release mechanism for an undervoltage release;

4 two schematic views of an embodiment of a release mechanism according to the invention for a shunt release;

5 two perspective views of an embodiment of an inventive release mechanism for an undervoltage release;

6 two perspective views of an embodiment of a release mechanism according to the invention for a shunt release;

7 Top view of a trigger with an embodiment of a trigger mechanism according to the invention;

8th Side view of the trigger off 7 ,

The trigger according to the invention 1 has acc. 7 one in a shutter housing 11 mounted electromagnetic exciter. The pathogen consists of an exciter coil 31 with a fixed magnetic core 32 and a movable anchor 33 , The anchor 33 is about an actor 51 with the trigger mechanism 5 operatively connected. Between a support in the housing and the actuator 51 there is an anchor spring 4 which the anchor 33 and with it the actor 51 with one opposite to that through the exciter coil 31 generated attraction between magnetic core 32 and anchor 33 applied.

The translatory movement of the anchor 33 is on the actuator 51 of the triggering mechanism 5 transfer. The actor 51 transfers this translatory movement to a rocker arm 53 , The rocker arm 53 is in a rocker arm receptacle 521 stored so that one through the actuator 51 conditional, translational movement is translated into a pivoting movement of the rocker arm, since the rocker arm 53 at a first end via an actuator connection receptacle 533 with one at the actor 51 attached actuator connection 511 is actively connected. The rocker arm tilts about a rotation axis D. The rocker arm pivots 53 because of the translatory movement of the actuator 51 around the axis of rotation D, so takes the Aktoranbindungsaufnahme 533 opposite, as a pen warehouse 531 trained, second end of the rocker arm 53 a trigger pin 542 With. The trigger pin 542 is at one end of a trip unit 54 appropriate. The trip unit 54 is in a pen shot 522 guided so that they only substantially perpendicular to the translational movement of the actuator 51 is displaceable. There may also be other relative movements between actor 51 and trip unit 54 will be realized. That's how the pen recording can be done 522 according to the geometric dimensions of the trigger housing 11 also in any other angle to the translational movement of the actuator 51 be arranged (eg 45 °). In this case, the geometry of the rocker arm must be adjusted.

Furthermore, a pivot bearing 52 provided, which the rocker arm 53 via a rocker arm receptacle 521 rotatably accommodates. In addition, the pivot bearing points 52 a pen recording 522 on, in which the tripping unit 54 essentially perpendicular to the translatory movement of the actuator 51 slidably arranged. The pivot bearing 52 also has an adjustment head 523 on. The pivot bearing 52 is above the adjusting head 523 from outside the shutter housing 11 around the longitudinal axis of the release pin 541 rotatably mounted. It can not shown latching means in the trigger housing 11 of the trigger 1 be present, which is a detent of the pivot bearing 52 enable. For example, locking means on the inside of the housing of the trigger housing 11 be present, which is a detent of the pivot bearing 52 enable. The adjustment knob 523 is configured such that it can accommodate, for example, the tip of a screwdriver. Different geometries, such as longitudinal slots or cross slots can be used.

Furthermore, the release mechanism according to the invention 5 an actuator connection 511 on that the actor 51 with the rocker arm 53 operatively couples. The actuator connection 511 is part-circular on the actuator 51 formed, wherein the circle center as a geometric center of the part-circular actuator connection 511 with the longitudinal axis of the release pin 541 in approximately coincides when the trigger pin 541 not extended.

Will the pivot bearing 52 over the adjusting head 523 around the long axis of the release pin 541 turned, remains the Aktoranbindungsaufnahme 533 during rotation all the time with the circular actuator connection 511 operatively connected. The actuator connection recording 533 is designed such that it also during tilting of the rocker arm 53 with the actuator connection 511 is actively connected. The pen holder 522 becomes during the rotation of the pivot bearing 52 so twisted that the sift camp 531 of the rocker arm 53 during rotation of the pivot bearing 52 always with the trigger pin 542 the trip unit 54 is actively connected.

It is possible by a slight rotation of the pivot bearing 52 about 10 ° -45 ° the stroke of the release pin 541 to adapt to the geometry of the switching mechanism of the connected circuit breaker. If the pivot bearing is rotated by 90 ° from an end stop, so that the rotation axis D parallel to the translational movement of the actuator 51 runs, the stroke of the trigger pin is close to zero.

Runs the axis of rotation D perpendicular to the translational direction of movement of the actuator 51 , that's through the trigger pin 541 running stroke maximum. In the position of the pivot bearing 52 to 3a and 3b In this embodiment, an undervoltage release is realized. When applying a voltage to the exciter coil 31 becomes the anchor 33 to the stationary magnetic core 32 dressed. The actuator is in the rest position 3a , The trigger pin 541 is inside the shutter housing 11 , The anchor 33 that with an anchor spring 4 from the magnetic core 32 is pushed away when the field of the exciter coil 31 falls below a certain size, transfers its motion to the actuator 51 , in turn, via the rocker arm 53 the trigger pin 541 out of the shutter housing 11 pushes and thus triggers the unlatched switch lock of the circuit breaker ( 3b ).

In 4a and 4b is the trigger 1 set as shunt release. The pivot bearing 52 was from the position 3a and 3b in the position according to 4a and 4b turned. The rest position in 4a is present when the magnetic field of the exciter coil 31 insufficient, the spring force of the anchor spring 4 to overcome. If the current in the exciter coil increases 31 On, so is from a threshold, the anchor 33 from the magnetic core 32 dressed. This will be the actor 51 moves translationally and transmits this movement over the rocker arm 53 on the trigger pin 541 , which then also the shutter housing 11 protrudes and a circuit breaker of a circuit breaker can trigger ( 4b ).

Of course, there are other arrangements of exciting coil 31 , Magnetic core 32 and anchor 33 inside the shutter housing 11 possible, so that the directions of movement can be reversed.

LIST OF REFERENCE NUMBERS

1

trigger

11 11 '

trigger housing

2a, 2 B

connection elements

31

excitation coil

32

magnetic core

33

anchor

4

armature spring

5

trigger mechanism

51 51 '

actuator

511 511 ', 511' '

actuator connections

512

spring mount

52

pivot bearing

521 521 ', 521' '

tilting lever

522 522 '

pin receptacle

523

adjustment head

53 53 '

rocker arm

531, 531 '

pin bearing

532 532 '

Kipphebelzapfen

533, 533 '

Aktoranbindungsaufnahme

D

axis of rotation

54

trip unit

541, 541 '

release pin

542, 542 '

Release pin pin

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10004597 A1 [0006]
• - DE 4242162 A1 [0007]
• - FR 1637121 [0008]

Claims (7)

Trigger ( 1 ) for an electrical switching device with a trigger housing ( 11 ) and one in the trigger housing ( 11 ) arranged electromagnetic exciter, consisting of an excitation coil ( 31 ) and a movable anchor ( 33 ), and one in the trigger housing ( 11 ), with the anchor ( 33 ) Actively connected triggering mechanism ( 5 ), which in turn consists of: - a translatory with respect to the shutter housing ( 11 ) can be pushed back and forth ( 51 ) with at least one actuator connection ( 511 ), - a trip unit ( 54 ), which has a release pin ( 541 ), - a rocker arm ( 53 ) located in a relative to the axis of movement of the trigger pin ( 541 ) spaced rocker arm receptacle ( 521 ) is pivotally mounted, wherein the rocker arm ( 53 ) has two free Kipphebelarmenden, wherein the first Kipphebelarmende with the actuator connection ( 511 ) and the second rocker arm end with the trip unit ( 54 ) is pivotally operatively connected, - a pen holder ( 522 ), which is the trigger unit ( 54 ) substantially perpendicular to the translational movement direction of the actuator ( 51 ) leads, characterized in that the rocker arm receptacle ( 521 ) by one through the release pin ( 541 ) extending axis is rotatably mounted and is adjustable in at least two different positions. Trigger ( 1 ) according to claim 1, characterized in that the trip unit ( 54 ) a trigger pin ( 542 ), which with a pin bearing ( 531 ) on the second rocker arm end of the rocker arm ( 53 ) is pivotally connected. Trigger ( 1 ) according to claim 1 or 2, characterized in that the pin receptacle ( 522 ) and the rocker arm receptacle ( 521 ) on a rotary bearing ( 52 ) are arranged. Trigger ( 1 ) according to claim 3, characterized in that the pin receptacle ( 522 ) and the rocker arm receptacle ( 521 ) with the pivot bearing ( 52 ) are integrally formed. Auxiliary release ( 1 ) according to claim 3 or 4, characterized in that the pivot bearing ( 52 ) an adjusting head ( 523 ) on the axis of rotation (D) of the pivot bearing ( 52 ) through the trigger housing ( 11 ) is operable from the outside. Trigger ( 1 ) according to claim 1 to 5, characterized in that the actuator connection ( 511 ) is formed part-circular in such a way that the two ends of the part-circular actuator connection ( 511 ) on the actuator ( 51 ) are attached. Triggering mechanism ( 5 ) according to claim 6, characterized in that the circle center of the part-circular actuator connection ( 511 ) in the longitudinal axis of the release pin ( 541 ) lies.

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