DE102007046356B4 - Switching mechanism of a residual current device, residual current device and system with a residual current device and a circuit breaker - Google Patents

Abstract

The present invention relates to a switching mechanism (1) of a fault current protection device (30) for switching a circuit breaker which is arranged on a carrier plate (2), having a rotatably mounted handle (3), a bracket (4) which is coupled to the handle (3), wherein a first end (5) of the bracket (4) is arranged on the handle (3) outside the rotation axis of the handle (3), and a catch (7) which is connected in an articulated manner to the second end (6) of the bracket (4) and has a groove (8) for guiding a pin (10) of a rotatably mounted switching lever (9) of the switching mechanism (1), having a rotatably mounted half-shaft (11) with a catching edge (12), wherein the catching edge (12) is designed to grasp an end (13) of the catch (7), having a first spring element (14) which is connected to the catch (7) and/or the switching lever (9) and can be loaded in a spring-elastic manner when the catch (7) and/or the switching lever (9) is moved. The invention also relates to a fault current protection device having a switching mechanism of this type, and to a system with a fault current protection device, having a switching mechanism of this type, and a circuit breaker.

Description

The The present invention relates to a switching mechanism of a residual current device for Switching a circuit breaker. Furthermore, the invention relates a residual current device and a system having a Residual current device and one next to the residual current device arranged circuit breaker.

RCD are switching devices, in the case of a fault, in particular an insulation fault, in electrical devices and plants shut them off in less than 200 ms. D. h., a residual current device is a protective device in power grids. This separates the connected, monitored Circuit from the rest of the power network when electricity is on the wrong path, about through the body a person, flows. For this purpose, the residual current device compares the amperage of the outgoing electricity with the strength of the backflowing stream.

A connected between an electrical network and an electrical device Residual current device causes the currents through flow a converter, d. h., Both from the power supply to the electrical device as well vice versa. As long as the insulation in the electrical device is intact is, are back and forth stream same size. However, if the insulation is faulty, part of it may be in the electrical Device flowing current over the Mistake, d. H. the insulation fault, and the housing also flow over a person who for example, the electrical appliance served. A fault current protection device can already off via its converter a difference of 10 mA notice a magnetic imbalance and turn off the power.

Residual Current Device (FI-switches, FI = residual current) are prescribed for certain electrical installations, so for example electrical installations on construction sites, in residential buildings, in functional buildings such as office buildings or department stores and in the industry.

RCD protect people in case of failure, before dangerous Body flows both Indirect or direct touch by immediate shutdown. At the same time, they offer protection devices that switch off in the event of short-circuit and ground fault as the only comprehensive protection even with fault currents, the occur in so-called imperfect short circuits and earth faults, where Fuses and circuit breakers do not turn off because these fault currents are sometimes far below the rated currents these protective devices are located.

Further are combined residual current and circuit breakers (RCCBs), combine the line and personal protection in one device.

To the later Attachment to circuit breakers are so-called FI blocks in two-, three- and four-pole version, rated currents from 6 to 125 A and rated fault currents of 10, 30, 100, and 300 mA available. Need the fault current protective devices for fault current detection a Auxiliary voltage, they are generally used as residual current device (DI guard or DI block).

Mains voltage-independent FI blocks and mains voltage-dependent DI blocks are Residual current devices that do not have their own switching contacts feature, but as an accessory be attached to a circuit breaker (LS-switch) and use its contacts. The switching mechanism in the residual current device, d. H. in the FI block or in the DI block, is doing with the mechanics of Circuit breaker over a coupling connected. An occurring fault current generated in the residual current device an electrical pulse. About one Magnetic relay, the pulse is used to the switching mechanism in the residual current device, d. H. in the FI block or in the DI block, trigger. About the coupled switching mechanism is also the circuit breaker fires his contacts tore open and the circuit interrupted. To Elimination of the insulation fault must first the residual current device be switched on, so that the residual current protection is active. First then lets Turn on the circuit breaker and thus the circuit close to the consumer. An FI block or DI block is thus not a switching device, but a protective device.

A Trip unit in particular an electromagnetic release, the residual current device serves for a residual current flow occurring in a voltage signal to transform into a mechanical movement. In the mechanical movement It may, for example, the rotation of a lever or Switch bracket, or to act the linear motion of a plunger.

From the DE 21 15 034 A is an electrical circuit breaker for residual current, overcurrent and short circuit protection with a single or multi-pole circuit breaker with switching contacts and a component for fault current detection and tripping known. The fault current component includes, inter alia, a fault current release and a switching mechanism with a force accumulator and an actuator. On the switching mechanism is a coupling part, which by its position the Ent latching of the adjacent self-switch of the circuit breaker when tripping or switching off the residual current component caused.

From the EP 0 295 155 A1 is a circuit breaker in modular design with auxiliary trip block for baying and coupling to a multi-pole circuit breaker block known. The auxiliary trip block is equipped with a relay. The triggering of the circuit breaker block by the auxiliary trip block via a trip bar and a slope of the trip bar of the auxiliary trip block. The auxiliary trip block has a mechanical trip connection. This serves to transmit the tripping order of the auxiliary tripping block, ie the relay, to the tripping rod by fitting a spigot of a drive mechanism into a corresponding opening in the insulating housing of the adjacent switch pole of the circuit breaker block.

The Known switching mechanisms of residual current protective devices are constructed extremely expensive and thereby take up considerable space within a residual current device or a residual current device. So far, switching mechanisms used that for developing the switching of several contacts of a residual current operated circuit breaker, modified and adapted to the FI-Block conditions. These switch mechanisms consume a relatively large amount of space, which is a Construction in a division unit does not allow.

The The object of the invention is a switching mechanism of a residual current device to create that simply energy, z. B. spring energy stores, to trigger this one over to use a coupling coupled circuit breaker and thereby disconnecting the downstream load circuit from the mains. Furthermore, the switching mechanism and a residual current device be simple and compact with such a switching mechanism. Furthermore, a system comprising a residual current device is intended and a circuit breaker, to be created on a simple and fast way in the event of a fault current the circuit interrupts.

These The object is achieved by a Switching mechanism with the features of the independent claim 1, by a residual current device with the features according to the independent claim 12 and by a system comprising a residual current device and a circuit breaker arranged adjacent to the residual current device, with the features according to the independent claim 14 solved. Further features and details of the invention will become apparent from the Dependent claims, the description as well as the drawings. Features and details the are also described in connection with the switching mechanism in connection with the residual current device and the system comprising a residual current device and one next to the residual current device arranged circuit breaker, and vice versa.

According to the first aspect of the invention, the object is achieved by a switching mechanism of a residual current device for switching a circuit breaker via a switch lever ( 9 ) mounted to the circuit breaker, which is arranged on a carrier board, comprising a rotatably mounted handle, a handle coupled to the bracket, wherein a first end of the bracket outside the axis of rotation of the handle is disposed on the handle, and at the second end of the bracket a pawl is articulated having a groove for guiding a pin of the rotatably mounted shift lever of the switching mechanism, comprising a rotatably mounted half-wave with a Verklinkungskante, wherein the Verklinkungskante is adapted to grip one end of the pawl, having a with the pawl and / or Shift lever connected first spring element, which is resiliently tensioned in a movement of the pawl and / or the shift lever, solved.

in the Light of the invention also provides a residual current device a residual current device.

A Such switching mechanics can simply store energy around them for moving a shift lever of a coupled via a clutch Use circuit breaker.

Further Such a switching mechanism is simple and compact. The switching device can be easily adjusted by moving the handle of the Switching mechanism to save spring energy and this upon detection a fault current and related tripping by an electrical or electromagnetic triggering element to use about one fastened to the shift lever clutch the switching mechanism of a attached circuit breaker to activate and thereby the Circuit break. The clutch is in the field of Coupling point of the circuit breaker arranged, the angle of rotation and the torque of the shift lever on the circuit breaker are coordinated. The switching mechanism itself has no contact points, those with big ones Force or with a big one Torque closed and opened Need to become. The operation of the circuit breaker The coupling is made with a comparably low torque.

The Switching mechanism can be constructed sufficiently compact, in particular be a maximum of one division unit wide. In the light of the invention a division unit has a width of 18 mm. This matches with also the preferred width of a residual current device, which includes the switching mechanism. The switching mechanism is special for use in residual current protective devices or residual current protective devices, which do not have their own contact system, but a circuit breaker on a Trigger clutch developed.

The Switching mechanism is on a carrier board arranged. In this case, the carrier board a part, in particular a side member, of the housing of Residual current device in which the switching mechanism is arranged is, form. The carrier board is used as a base element for fastening the individual components of the switching mechanism.

The Switching mechanism has a rotatably mounted handle. This can be manual be moved so that the switching mechanism by pivoting the handle can be switched on or off. The handle is with a hanger, which is used for rotation of the shift lever of the switching mechanism coupled. A first end of the strap is outside of Rotary axis of the handle arranged on the handle. This will be the Ironing at a pivoting of the handle moves. On the bracket, in particular on the second End of the temple, is hinged a latch. Guided means that the pawl is rotatable on the temple is stored. Thus, an axis of rotation may be provided which the bracket, in particular the second end of the temple, rotatably connected to the pawl. With a movement of the handle and with it the temple becomes the latch also moves. The pawl also has a groove for guide a pin of a rotatably mounted shift lever of the switching mechanism on. The groove is preferably provided in the upper third of the pawl. The pin of the shift lever of the switching mechanism is outside the axis of rotation of the shift lever arranged on this, so that at a movement of the pawl of the shift lever due to the leadership of the Spigot is turned in the groove. The groove of the pawl serves as so-called link guide for the journal. The groove allows a pivoting movement of the latch when passing through the bracket or the handle is pivoted. The shift lever serves as an interface to the circuit breaker. By the rotation of the shift lever and a fastened to the shift lever coupling can directly a likewise attachable to the clutch switching mechanism of the circuit breaker be switched. The shift lever of the switching mechanism serves as direct Interface to a mounted circuit breaker. Here is directly the shift lever, which is in operative connection with the clutch, switched, and not some shift shaft at any other Position in the residual current device, which in turn with another bracket and another lever activates the circuit breaker. This Principle saves parts, installation space and material costs.

The Switching mechanism also has a rotatably mounted half-wave, the again has a Verklinkungskante on. The latching edge is formed for gripping one end of the pawl. The latching edge is preferably provided at the end of the half-wave. The half wave or the Verklinkungskante the half-wave are so on the carrier board arranged the switching mechanism that the Verklinkungskante that the Groove the latch facing away from the latch can engage to thereby a rotation of the pawl to cause the Verklinkungskante.

The Switching mechanism also has a with the pawl and / or the shift lever connected first spring element, which in a movement of the Pawl and / or the shift lever is resiliently tensioned. At the Switching on the switching mechanism, d. H. with a movement of the handle from an off position to an on position, becomes the first spring element tensioned or spring loaded. Through the movement of the Handles from an off position to an on position become the hanger and so that the pawl moves. By the movement of the pawl is further the shift lever of the switching mechanism turned. Is the first spring element attached to the pawl or on the lever, this is included a movement of the pawl or of the shift lever in the direction of Handle tensioned.

It A switching principle is used in which the latch and turn off the latch edge. Will the handle when Switching the switching mechanism from one side to the other side turned, he moves over the temple the latch with him. Since the latch at its lower end to the Latching edge of the half-wave gets stuck, it leads in its groove at the top of the pin of the lever also With. The shift lever and thus attachable to the shift lever Coupling to the circuit breaker are turned so that a Switching on the circuit breaker is no longer hindered. The handle is over pushed a dead center into its on position, where he too remains, as the pulling force in the bracket after passing the dead center now advantageously a reverse torque on the handle.

In case of a fault current, the switching mechanism is unlatched. This means that the half-wave is rotated by an electromagnetic release about its axis of rotation, while the Verklinkungskante the pawl, which has hooked at the Einschaltvorgang at the Verklinkungskante the half-wave, releases again. The free pawl can no longer support the torque applied to it when it is switched on and no longer prevents the shift lever from turning back into its off position with the aid of the first spring element, preferably a torsion spring. About the attachable coupling a corresponding switching mechanism of the switched circuit breaker can now be triggered. The handle, which is normally held in its on position by the pulling force in the bracket, can now, driven by a weak handle spring, move back to its off position.

Prefers is a switching mechanism that attaches to the shift lever Coupling for switching the switching mechanism of the circuit breaker having. The clutch is on the one hand to the shift lever of the switching mechanism and on the other hand on a switching mechanism, in particular a shift lever, attached to the circuit breaker. This can be a switching the switching mechanism of the circuit breaker by a movement the shift lever of the previously described switching mechanism done. Only the clutch connects the two levers.

The Coupling is in the form of the attached circuit breaker Voted. It protrudes from the residual current device in the Circuit breaker and carries one of the coupling contour of the switching mechanism of the circuit breaker Inverse contour, so that they directly into the switching mechanism of the circuit breaker intervenes.

The Handles of the switching mechanisms of the residual current device and of the circuit breaker are not directly coupled because the user first turn on the residual current device must be before the circuit breaker can be switched on. Would the Users try to connect the circuit breaker before or at the same time Turn on the residual current device, the Clutch of the residual current circuit breaker not yet switched on trigger the circuit breaker, before its contacts are closed at all are. The circuit breaker can not be switched on practically, as long as the residual current device is not in "on" position.

The independent of one another Grips offer the user another advantage. In case of error, followed of a separation of the load circuit from the network, recognizes the user at the position of the handles, which device, whether residual current device or circuit breaker has caused the disconnection, and thus which error case, whether a short circuit or a ground fault, is present. This makes it easier for the user to search for the source of the error. Are located For example, the handle of the residual current device in "on position" and the handle of the circuit breaker in "off position" is a short circuit or an overload of the consumer network. For example, both are Handle in "off position", has the Residual current device a fault current, the z. B. by an insulation fault or by touching a live one Part of it was caused by a person, recognized and about the Clutch disconnects the load circuit from the mains causes the circuit breaker.

Prefers forms the carrier board at least partially a housing element the residual current device, in which the switching mechanism is arranged. That is, the carrier board For example, one or more side elements, a lid member and / or form a bottom element of the residual current device. hereby the residual current device can be made extremely compact. The carrier board serves to attach the individual elements of the Schaltmecha technology. Due to the attachment of the lever, the handle, the half-wave as well as the first spring element on the carrier board can this Elements are positioned correctly to each other. The first spring element For example, it can be attached to the carrier board with one end and with the other end on the pawl or the shift lever. This leads to, that upon movement of the pawl or the shift lever, the first Spring element is tensioned and thus a force on the pawl or the shift lever exerts. The carrier board is preferably formed of plastic.

Further, a switching mechanism is further characterized in that it comprises a second spring element which is connected to the rotatably mounted half-wave. The second spring element exerts a force on the half-wave, so that it presses from below against the latched or hinged pawl. As a result, the pawl remains hanging after the switch-on at Verklinkungskante and thus supports the force exerted on the pawl torque, which is exerted by the first spring element from. By hanging the lower end of the pawl at the Verklinkungskante prevents the shift lever of the switching mechanism is moved due to the force exerted by the first spring element in the off position. The Verklinkungskante ensures that the applied spring energy initially stored. By a movement of the half-wave away from the lower end of the pawl, the pawl is released so that it can no longer support the torque applied to it when it is switched on. After the release of the pawl rotates the first spring element, preferably a torsion spring, the pawl and the shift lever back to their off positions. About the Kupp ment is then triggered the switching mechanism of the switched circuit breaker.

Around to realize the release of the latch from the latch edge, must the half-wave against the applied by the second spring element Force to be turned to the half-wave. This is done by a electric or electro-magnetic release. This electrical or electromagnetic triggers serves for a residual current flow occurring in a voltage signal to transform into a mechanical movement. This is preferred a pestle of electric or electromagnetic release such that he the half-wave turns against its torque acting on it and thus releases the lower end of the latch. The pestle meets while preferably on the end of the half-wave. Preferred is a switching mechanism, in the switching mechanism at least one electrical or electromagnetic Trigger, having a movably mounted plunger for actuating the Half wave has. D. h., The electrical or electromagnetic trigger is on the carrier board arranged the switching mechanism. It is conceivable that several electrical or electromagnetic releases, which can touch the half-wave differently, are provided.

Of Furthermore, a switching mechanism is preferred, the one with the half-wave coupled landing gear, concentric to the half-wave of the switching mechanism is stored, has. The attachment lever allows the half-wave of various electrical or electromagnetic triggers the force exerted on it by the second spring element can be turned, to release the lower end of the latch. The compatibility to different arranged release systems is produced by the fact that the half-wave both directly through the plunger of a classic electromagnetic release as well as indirectly over the Mooring lever from the ram of a new compact electromagnetic release drive. Of the so-called new compact electromagnetic release is preferably arranged directly below the handle or the strap of the switching mechanism. hereby the new compact electromagnetic release is easily accessible, without that the switching mechanism, d. h., the handle, the strap or the latch must be removed.

Concentric stored to the half-wave of the switching mechanism means the axis of rotation the half-wave and the axis of rotation of the Anle lever are coaxial to each other. The application lever is multifunctional. D. h., He has on the one hand the task that when triggering the electromagnetic shutter below the handle, the ram of the electromagnetic shutter press down on the contact lever, turn the half-wave, released the pawl and thereby the switching mechanism is triggered. On the other hand, an upper arm of the Anlegehebels after the release of Shift lever in the direction of the "off" position of the shift lever and thus not independently returning to his rest position Pestle of electromagnetic release pressed from the lower arm of the Anlegehebels in its rest position, without while the rotation of the half-wave, which are rotated to the Rückverklinkung must hinder.

Of the Temple of Switching mechanism can be designed in various ways. The temple provides the connector between the handle and the pawl of the switching mechanism. D. h., About the Ironing is added a movement of the handle moves the latch, and vice versa. there is the temple preferably designed such that it has as little space below of the handle. Particularly preferred is therefore a switching mechanism, at the temple at least partially an L-shaped Form has. That is, the end of the strap attached to the handle the switching mechanism is mounted, preferably has an L-shaped form or an L-shaped one Course on. This makes possible, that one leg of the L-shaped formed Area of the temple at least partially horizontally can be arranged. by virtue of the special design and also the corresponding length of bracket can the shift lever, pawl and the half-shaft of the switching mechanism next to the handle and not located below the handle of the switching mechanism become. The space below the switching mechanism can be used for attachment of a compact electromagnetic release. That is, through the specially shaped bracket Is it possible an electromagnetic trigger below the handle in the on position of the switching mechanism at Remove defect and replace with a non-defective, without doing that completely already open assembled switching mechanism to have to. During the Switching operation and in the off state, the bracket uses the space above the electromagnetic trigger to fulfill its function as a link.

Of Furthermore, a switching mechanism is preferred in which the clutch has a driver. The driver is designed in this way that in a movement of the lever of the switching mechanism in an off position the corresponding lever of the next to the switching mechanism arranged circuit breaker in parallel with the movement of the Shift lever of the switching mechanism move and thereby the switching mechanism of the circuit breaker and tear up his contacts can.

In order to achieve compatibility with the rotation triggerable levers of the switching mechanism and the circuit breaker has the switching mechanism a freewheel in the clutch, ie in the driver for the circuit breaker and that between the shift lever of the switching mechanism and the concentric mounted carrier. Thus, the residual current device, ie the FI or DI block, trigger the circuit breaker via a rotation of the lever and thus the driver. On the other hand, however, a rotation of the clutch, ie the driver, due to triggering by a mounted DIN rail mounted device, z. As a circuit breaker, an undervoltage release or a power release, not hindered because the driver can rotate freely in the appropriate direction. A weak freewheel torsion spring ensures that the catch is turned back to its rest position after free running.

A Switching mechanism, which has a test button with a test spring element, in particular a test sheet spring, is also preferred. It is particularly preferred when the test spring element the test button on one side by at least one cylindrical element, in particular through two pins, guided that is the test spring element Press on a terminal of the switching mechanism. The test button is advantageously for reasons of space within arranged the switching mechanism. In particular, the test key is between the handle and the shift lever of the switching mechanism on the carrier board arranged.

The test button presses on a test spring element, in particular a leaf spring, which at the same time restoring element and contact element is. The tip of the test spring element touched when pressing the test button a movable leg of the first spring element, in particular the torsion spring, the shift lever, provided this is located in its on position, thus closing the test circuit. The leaf spring reaches the movable leg of the first spring element the shift lever is not when the shift lever is in the off position. Lock in the test circuit at switched off switching mechanism is not possible. Immediately after closing the Circuit it is torn open again, since the test current to leads, that triggered the switching mechanism and the shift lever and thus the movable leg in its off position to be driven. The test spring element is preferably on one side by two cylindrical elements, in particular by two pins, led, which the Prüffederelement Press on a terminal of the switching mechanism. The test spring element or the Prüfblattfeder is near to his / her right end preferably in two cones guided. These ensure that the end of the test spring element or the Prüfblattfeder to a terminal of the residual current device, d. H. of the FI block, presses, in which the switching mechanism incl. The test button is arranged. Further is preferred when the first spring element of the shift lever of the Switching mechanism a snap sheet for receiving a contact element, which on a arranged on the switching mechanism test resistor is seconded. That is, the test circuit will continue closed by the first spring element, in particular the Torsion spring, the lever is supported on the small snap sheet, the this is done by a test resistor afterwards the complete Assembly of the switching mechanism including carrier board and closed Cover plate by snapping in a small leg of the test resistor take. This offers the advantage that the variety of variants the switching mechanisms not yet by countless different test resistors after is driven above. In particular, the snapping in as an assembly process easy and cheap and no additional tools are necessary such as crimping, squeezing or soldering.

According to one second aspect of the invention, the object is achieved by a residual current device for switching a circuit breaker, wherein the residual current device a previously described switching mechanism has solved.

A Residual current device with such a switching mechanism can be constructed sufficiently compact, in particular maximum be a division unit wide. The switching mechanism is special for the Use in residual current devices that do not have their own contact system but trigger a circuit breaker via a clutch developed. At least one side element or the lid or the floor element of the housing the residual current device can be used as a carrier board of the switching mechanism serve. This allows the dimensions the residual current device can be kept low.

By the arrangement of such a multifunctional switching mechanism in the residual current device such residual current protective devices can with a width of two division units, but also of only one Division unit, as FI or DI block realized. The switching mechanism finds it including the test button as well their components and including the trip unit, d. h., of the electromagnetic trigger, in the upper half the residual current device in only one division unit space and is capable of a circuit breaker by rotation to control a clutch. Furthermore, such a residual current device due to the switching mechanism with different arranged electromagnetic triggers usable.

Prefers is also a residual current device, the at least one electromagnetic release, comprising a movably mounted plunger, a summation current transformer, having electrical lines and terminals for electrical lines. By using the special switching mechanism are residual current devices feasible, which includes electromagnetic triggers, summation current transformers, electrical cables and terminals fit into a single dividing unit. The The number of parts of the residual current device has been reduced by the use of the special switching mechanism reduced to a minimum. This results a significant cost advantage in the manufacture of the residual current device. The product range is made by attachable residual current devices, d. H. FI or DI blocks, extended with a width of only one division unit, which in addition to leads to a significant customer and thus market advantage.

According to the last one Aspect of the invention is the object by a system comprising a residual current device and one next to the residual current device arranged circuit breaker, solved, in which the residual current device is formed as described above and wherein between the residual current device and the circuit breaker, a clutch is provided via the the switching lever of the switching mechanism of the residual current device and a shift lever of the circuit breaker are coupled. Preferably, the residual current device and the circuit breaker as a rail-mounted device educated. these can For example, be arranged side by side on a top hat rail. About the Coupling, the residual current device can be the switching mechanism of the circuit breaker and thereby activate the circuit interrupt on detection of a fault current. The coupling can the shift lever of the switching mechanism of the residual current device and the shift lever of the switching mechanism of the circuit breaker connect to switch them together. Such a system allows the switching of the shift lever of the switching mechanism of the circuit breaker and thus the triggering of the circuit breaker with a low torque.

in the Fall of a fault current is the switching mechanism of the residual current device unlatched. This means that the half-wave of an electromagnetic trigger is rotated about its axis of rotation, while the Verklinkungskante the pawl, at the switch-on at the Verklinkungskante the half-wave hooked, releases again. The free latch can now do that they no longer support torque applied when switching on and prevents now no longer that the shift shaft with the help of first spring element, preferably a torsion spring, back in their Turning off the off position. When the residual current device is switched on, the first one becomes Tensioned spring element by turning the shift lever or the pawl is pivoted. In the on position of the handle of the switching mechanism works over the first spring element a force on the shift lever or on the Latch and so on the temple on the handle of the switching mechanism, which at power on a Totpunkt turned, now stable in the on position is held. This force is maintained by the pawl the Verklinkungskante the half-wave is held. The by the Voltage of the first spring element applied energy is thus stored. Only when the pawl is released causes the stored energy, d. h., The spring force of the first spring element that the pawl or the shift lever can be rotated so as to pass the circuit through the clutch in the circuit breaker to interrupt. That is, over the attachable to the shift lever of the switching mechanism of the residual current device Clutch can be a corresponding switching mechanism of the switched Circuit breaker tripped become. The handle of the switching mechanism of the residual current device, the in the one-state normally by the traction in the hanger in his Position is held, can now, powered by a weak Handle spring, move back to its off position.

The Invention will now be described by way of non-exclusive embodiments explained in more detail with reference to the accompanying drawings. It demonstrate:

1 Switching mechanism of a residual current device in "on"position;

2 Switching mechanism of a residual current device in "off position";

3 Switching mechanism of a residual current device in "on position" with contact lever;

4 Switching mechanism of a residual current device in "on position" with classic electromagnetic release;

5 Switching mechanism of a residual current device in "on position" with compact electromagnetic release;

6 a perspective view of a switching mechanism of a residual current device in "on"position;

7 a perspective view of a switching mechanism of a residual current device in "on" with compact electromagnetic trigger and stop lever;

8th a perspective view of a test button, a Prüffederelementes, a first spring element and a test resistor.

In the 1 is a switching mechanism 1 a residual current device 30 , ie for a DI block, shown in on position. The switching mechanism 1 is on a carrier board 2 arranged. The handle 7 is over the rotatably hinged to the latch bracket 4 with the handle 3 the switching mechanism 1 connected. The first end 5 of the temple 4 is rotatable with the handle 3 coupled while the second end 6 of the temple 4 is rotatably coupled to the applied latch. The handle 7 has at its upper end a groove 8th on, in a pin 10 the shift lever 9 the switching mechanism 1 is held feasible. The pin 10 the shift lever 9 is spaced from the axis of rotation of the shift lever 9 on the shift lever 9 arranged. By pivoting the latch 7 becomes the pin 10 in the groove 8th the latch 7 guided, so the shift lever 9 is turned. The lower end 13 the latch 7 engages in the on position of the switching mechanism 1 at the Verklinkungskante 12 the rotatably mounted half-wave 11 one. D. h., When changing the switching mechanism 1 from an off position to the on position remains the bottom end 13 the latch 7 at the Verklinkungskante 12 the half-wave 11 hang. That is, the handle becomes 3 when switching the switching mechanism 1 turned, he pulls over the hanger 4 the handle 7 with himself. Because the latch 7 at your lower end 13 at the Verklinkungskante 12 the half-wave 11 gets stuck, it leads in its groove 8th at the top of the pin 10 the shift lever 9 also with. The shifter 9 and thus the on the shift lever 9 attachable coupling to the circuit breaker are turned so that switching on the circuit breaker is no longer hindered. The handle 3 is pushed over a dead center into its on position, where it remains, since the tensile force in the bracket 4 after exceeding the dead center now advantageously a reverse torque on the handle 3 exercises.

In case of a fault current, the switching mechanism 1 unlatched. That means the half-wave 11 is rotated about its axis of rotation by an electromagnetic release, not shown, while the Verklinkungskante 12 the latch 7 , which at the switch-on at the Verklinkungskante 12 the half-wave 11 hooked, releases again. The free latch 7 Now can no longer support the torque applied to it when switching on and now no longer prevents the shift lever 9 with the help of the first spring element 14 , preferably a torsion spring, turn back to its off position. About the attachable coupling a corresponding switching mechanism of the switched circuit breaker can now be triggered. The handle 3 In the one-state usually by the traction in the hanger 4 is held in its position, can now, driven by a weak grip spring, move back to its off position. The off position of the switching mechanism 1 the residual current device 30 is in 2 shown.

The switching mechanism 1 indicates with the shift lever 9 connected first spring element 14 on, which with a movement of the shift lever 9 is elastically tensionable. When switching on the switching mechanism 1 ie when the handle is moved 3 from an off position to an on position, becomes the first spring element 14 tensioned or spring loaded. By the movement of the handle 3 from an off position to an on position become the hanger 4 and with it the latch 7 emotional. By the movement of the pawl is further the shift lever 9 the switching mechanism 1 turned.

Such a switching mechanism 1 can by tensioning the first spring element 14 Simply store energy to use it to move the lever of a circuit breaker coupled via a coupling. Furthermore, such a switching mechanism 1 simple and compact. That is, the switching mechanism 1 can easily by moving the handle 3 the switching mechanism 1 Save spring energy and use this finding a fault current and thus verbun dener triggering by an electrical or electromagnetic triggering element to the on the shift lever 9 fastenable coupling to activate the switching mechanism of a mounted circuit breaker and thereby interrupt the circuit. The angle of rotation and the torque of the shift lever 9 the switching mechanism 1 are tuned to the circuit breaker. Such a switching mechanism 1 can be constructed sufficiently compact, in particular at most only one division unit wide.

The carrier board 2 represents a side element of the housing of the residual current device 30 in which the switching mechanism 1 is arranged, dar.

In the 3 is a switching mechanism 1 a residual current device 30 shown in the on position, wherein the switching mechanism additionally a landing lever 17 having. The switching mechanism 1 is designed for a residual current device, ie an FI block. The landing lever 17 is concentric to the half wave 11 stored, with the attachment lever 17 and the half wave 11 coupled together. Through the attachment lever 17 can the half-wave 11 be actuated by various electromagnetic triggers. A classic electromagnetic release 16a is in 4 shown. This classic electromagnetic release 16a pushes against the half-wave from below 11 to this from the point of view of the 4 to turn clockwise. This gives the Verklinkungskante 12 the lower end 13 the pawl free, so that they can no longer support the torque acting on them. The same happens when using a compact electromagnetic release 16b , like in the 5 shown. The pestle of the compact electromagnetic release 16b But presses from the top of the half-wave to this also from the view of the 5 to turn clockwise. The compact electromagnetic release 16b is just below the handle 3 the switching mechanism 1 arranged. When using the compact electromagnetic release 16b becomes the lead lever 17 used. This is a multifunctional landing lever 17 , That is, the multifunctional landing lever 17 on the one hand has the task of triggering the electromagnetic release 16b , where the hidden plunger of the electromagnetic release 16b down on the lever 17 pushes, the half-wave 11 turned and thereby the switching mechanism 1 is triggered. On the other hand, the upper arm 17a of the electromagnetic release 16b after releasing the gear lever 9 pressed to the left, ie from the handle 3 the switching mechanism 1 away, and thereby the non-automatically returned to its rest position plunger of the compact electromagnetic release 16b from the lower arm 17b of the docking lever 17 pressed into its rest position but without the rotation (clockwise) of the half-wave 11 hampering, which must be turned to latching.

The compatibility with different arranged release systems 16a . 16b is made by making the half-wave 11 both from the bottom left through the pestle of the classic trigger 16a as well as from the upper right above the Anlegehebel 17 from the pestle of a compact trigger 16b let drive.

The 6 shows a perspective view of a switching mechanism of a differential current protection device in the on position of the switching mechanism 1 , The half wave 11 can be from a classic electromagnetic release, not shown 16a be turned to the lower end 13 the latch 7 release. The 7 shows a perspective view of a switching mechanism 1 a residual current device 30 in on position of the switching mechanism 1 , where the switching mechanism 1 a compact electromagnetic release 16b and a landing lever 17 having. The half wave 11 is powered by a pestle of the compact electromagnetic actuator 16b which is just below the handle 3 and the temple 4 sits, turned. Above the compact electromagnetic release 16b has the hanger 4 at an on position of the switching mechanism 1 a horizontal gradient on, making the compact electromagnetic release 16b simply from the switching mechanism 1 or from the residual current device 30 Can be removed without the other components of the switching mechanism 1 need to be expanded.

In the 8th is a perspective view of a test button 18 , a Prüffederelementes 19 , a first spring element 14 and a test resistor 23 the switching mechanism 1 shown. The test spring element 19 is designed here as a test sheet spring. The test spring element 19 the test button 18 is on one side by two cylindrical elements 20 , here in the form of two pins, which led to the test spring element 19 on a terminal of the switching mechanism 1 to press. The test button 18 is advantageously for reasons of space within the switching mechanism 1 arranged. Here is the test button 18 advantageously between the handle 3 and the shift lever 9 the switching mechanism 1 on the carrier board 2 arranged.

The test button 18 presses on the test spring element 19 which is at the same time return element and contact element. The tip of the test spring element 19 Touched when pressing the test button 19 a movable thigh 14a of the first spring element 14 , which is designed here as a torsion spring, the shift lever 9 provided it is in its on position, thus closing the test circuit. The test sheet spring 19 reaches the movable leg 14a of the first spring element 14 the shift lever 9 not when the gear lever 9 is in the off position. A closing of the test circuit with the switching mechanism switched off 1 can not. Immediately after closing the circuit, it is torn open again, since the test current leads to the switching mechanism 1 triggered and the shift lever 9 and thus the movable thigh 14a be driven into the off position.

The first spring element 14 the shift lever 9 the switching mechanism 1 has a snap plate 21 for receiving a contact element 22 , here in the form of a so-called little leg, wel Ches on the on the switching mechanism 1 arranged test resistor 23 is seconded to. That is, the test circuit is still closed by the first spring element 14 the shift lever 9 on the small snap sheet 21 supported, which serves the test resistor 23 subsequently after the complete assembly of the switching mechanism 1 including carrier board 2 and closed lid plate by snapping the leg 22 of the test resistor 23 take. This offers the advantage that the variety of variants of the switching mechanisms not even countless different test resistors 23 is driven upwards. In particular, snapping in as an assembly process is easy and cheap and no additional tools are required, such as crimping, squeezing or soldering.

1

switching mechanism

2

carrier board

3

Handle

4

hanger

5

first End of the temple

6

second End of the temple

7

pawl

8th

groove in the latch

9

gear lever

10

spigot

11

half-wave

12

Verklinkungskante

13

The End the latch

14

first spring element

14a

Portable Leg of the first spring element

15

second spring element

16a

classical electromagnetic trigger

16b

compact electromagnetic trigger

17

landing lever

17a

upper Arm of the docking lever

17b

lower Arm of the docking lever

18

test button

19

Prüffederelement

20

cylindrical elements

21

snap plate

22

contact element

23

test resistor

30

RCD

Claims (14)

Switching mechanism ( 1 ) of a residual current device ( 30 ) for switching a circuit breaker via a on a lever ( 9 ) attached to the circuit breaker, which on a carrier board ( 2 ) is arranged, comprising a rotatably mounted handle ( 3 ), one with the handle ( 3 ) coupled bracket ( 4 ), with a first end ( 5 ) of the bracket ( 4 ) outside the axis of rotation of the handle ( 3 ) on the handle ( 3 ) and at the second end ( 6 ) of the bracket ( 4 ) a latch ( 7 ), which has a groove ( 8th ) for guiding a pin ( 10 ) of the rotatably mounted shift lever ( 9 ) of the switching mechanism ( 1 ), comprising a rotatably mounted half-wave ( 11 ) with a Verklinkungskante ( 12 ), wherein the Verklinkungskante ( 12 ) for grasping an end ( 13 ) the pawl ( 7 ) is formed, comprising one with the pawl ( 7 ) and / or the shift lever ( 9 ) connected first spring element ( 14 ), which during a movement of the pawl ( 7 ) and / or the shift lever ( 9 ) is elastically tensionable. Switching mechanism according to claim 1, wherein the switching mechanism ( 1 ) one on the shift lever ( 9 ) attachable coupling for switching the switching mechanism ( 1 ) of the circuit breaker has. Switching mechanism according to claim 1 or 2, wherein the carrier board ( 2 ) at least partially a housing element of the residual current device ( 30 ). Switching mechanism according to one of claims 1 to 3, wherein the switching mechanism ( 1 ) a second spring element ( 15 ), which with the rotatably mounted half-wave ( 11 ) connected is. Switching mechanism according to one of claims 1 to 4, wherein the switching mechanism ( 1 ) at least one electromagnetic trigger ( 16a . 16b ), comprising a movably mounted plunger, for actuating the half-wave ( 11 ) having. Switching mechanism according to one of claims 1 to 5, wherein the switching mechanism ( 1 ) one with the half wave ( 11 ) coupled stop levers ( 17 ) concentric with the half-wave ( 11 ) of the switching mechanism ( 1 ) is stored. Switching mechanism according to one of claims 1 to 6, wherein the bracket ( 4 ) has at least partially an L-shaped form. Switching mechanism according to one of claims 1 to 7, wherein the clutch has a driver. Switching mechanism according to one of claims 1 to 8, wherein the switching mechanism ( 1 ) a test button ( 18 ) with a test spring element ( 19 ), in particular a Prüfblattfeder having. Switching mechanism according to claim 9, wherein the test spring element ( 19 ) on one side by at least one element ( 20 ), in particular a cylindrical pin, which guides the test spring element ( 19 ) on a terminal of the switching mechanism ( 1 ) presses. Switching mechanism according to one of claims 1 to 10, wherein the first spring element ( 14 ) of the shift lever ( 9 ) a snap sheet ( 21 ) for receiving a contact element ( 22 ), which on one at the switching mechanism ( 1 ) arranged test resistor ( 23 ) is seconded. Residual current device for switching a circuit breaker, whereby the residual current device ( 30 ) a switching mechanism ( 1 ) according to one of claims 1 to 11. Residual-current device according to claim 12, wherein the residual-current device ( 30 ) at least one electromagnetic trigger ( 16a . 16b ), comprising a movably mounted plunger, a summation current transformer, electrical lines and connection terminals for electrical lines. System comprising a residual current device and a circuit breaker arranged next to the residual current device, wherein the residual current device ( 30 ) is formed according to claim 12 or 13, wherein between the residual current protective device ( 30 ) and the circuit breaker, a clutch is provided via which the shift lever ( 9 ) of the switching mechanism ( 1 ) of the residual current device ( 30 ) and a shift lever of the circuit breaker are at least temporarily coupled.