EP1913614A1

EP1913614A1 - Circuit breaker

Info

Publication number: EP1913614A1
Application number: EP05777775A
Authority: EP
Inventors: Karsten Freundt; Karl-Heinz Voss
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2005-08-10
Filing date: 2005-08-10
Publication date: 2008-04-23
Anticipated expiration: 2025-08-10
Also published as: HK1120923A1; ATE453920T1; US20100078300A1; CN101283423B; DE112005003722A5; CN101283423A; WO2007016880A1; EP1913614B1; JP2009505333A; DE502005008801D1; MX2008001886A

Abstract

A circuit breaker has at least one pole arrangement with a movable contact. A twin-armed lever is pivotally mounted for opening and closing the movable contact. A switch-on energy storage device is provided and a cam disc that is coupled to the switch-on energy storage device and, via an actuating element, to a first end of the lever. The second end of the lever is connected to the movable contact piece of the pole arrangement. There is also provided at least one switch-off energy storage device. The circuit breaker has a simple and compact design. The actuating element is a switching shaft, which interacts with the cam disc, is mounted such that it can rotate and is connected to the first end of the twin-armed lever via the switch-off energy storage device.

Description

description

breakers

The invention relates to a circuit breaker having at least one pole arrangement, which comprises a movable contact, a rotatably mounted double-armed lever for opening and closing the movable contact, a Einschaltergiespeicher, and with a cam, which with the Einschaltergiespeicher and via an actuator with a first End of the lever is coupled, wherein the second end of the lever is connected to the movable contact piece of the pole arrangement, and at least one Ausschaltenergiespeicher.

A circuit breaker of this type is known from DE 4 138 333 C2. In this switch, a rotatably mounted double-armed lever on an element facing the cam element / the cam first end an actuator in the form of a rotatably mounted roller, which interacts with the Nockenele- ment, wherein the cam element by the energy stored in a spring element as a turn-on energy storage in Rotation is offset. A movable contact is movably arranged relative to a fixed contact by means of the second end of the rotatably mounted double-armed lever between an open state and a closed state of the switch. The arrangement of spring element and cam element is arranged pivotably on a movable support means, wherein a locking device for latching and releasing the movable support means is provided. Connected to the double-armed lever at its first end are cut-out energy storage means which, at a power-up, pick up energy used to turn off the switch. Such an arrangement has a complicated and expensive structure, for example for opening the movable contact the rotatably mounted support elements with the cam elements arranged thereon must be pivoted in order to enable the separation of the contacts. In particular, such a construction requires a large volume.

Object of the present invention is to form a circuit breaker of the type mentioned, which has a simple and compact structure.

According to the invention, the object is achieved in that the actuating member is a controllable by the cam, rotatably mounted switching shaft which is connected to the first end of the two-armed lever via the Ausschaltenergiespeicher connected. With such an arrangement, the energy of the switch-on energy storage is transferred via the switching shaft as an actuator and the Ausschaltenergiespeicher on the lever for closing the movable contact, whereby a compact design is possible.

In a preferred embodiment, the switching shaft extends over the entire pole arrangement in a multipolar pole arrangement and has a driver for each movable contact, on which a first end of the respective cut-out energy store is articulated. An advantage of such a switching shaft is that the energy of the switch-on energy storage is transferable by the switching shaft to the respective movable contact by the respective driver in a multi-pole arrangement, for example in a three-pole circuit breaker, so that a synchronous drive the entire pole without an expensive holder guaranteed for a crossbar.

In a further embodiment of the invention, the switch-off Energy storage at a second end hingedly connected to the first end of the two-armed lever. The articulated arrangement of the shutdown energy storage between the selector shaft and the double-armed lever allows the Ausschaltergiespeicher in its tensioned state is almost in an extended position with respect to a line between the axis of rotation of the switching shaft and the second end of the Ausschaltenergiespeichers. As a result, only a small torque is exerted on the selector shaft, so that it can be fixed in a simple manner, wherein the torque exerted by the Ausschaltenergiespeicher is sufficiently large to separate when dissolved fixation of the shift shaft, the contacts.

In an expedient development of the Ausschaltenergie- memory comprises a spring element. Such a Ausschaltenergiespeicher allows in the inventive arrangement a simple tensioning of the Ausschaltenergiespeichers during the switch-on.

In a preferred embodiment, the switch-on energy storage device comprises a spring element, which is mounted at a first end on a housing part and is coupled at a second end via a clamping shaft with the cam. Such an arrangement allows for a simple transmission of the energy of the Einschaltspeichers means of the cam on the lever, on the other hand can be supplied via a connected to the clamping shaft drive unit in a simple way the turn-on energy storage energy.

In a preferred embodiment, the turn-on energy storage is held at a first end and connected at a second end to an eccentric of a tensioning device, cooperate with the return movement limiting means, and the means comprise a at the first end of the turn-on energy. Memory arranged latch mechanism. Such an arrangement is advantageously simple, inexpensive and at the same time wear-resistant, because a return movement of the switch-on energy storage is limited or prevented solely by the latch mechanism arranged at the first end of the switch-on energy store.

In an expedient development, the means comprise a ratchet mechanism triggering guide part, with which the first end of the switch energy storage device is movably mounted on a fixed axis by means of a slot formed in the guide member and which is connected to the second end of the switchgear energy storage. An advantage of such an arrangement is that due to the eccentrically supported second end of the switch-on energy storage device and the guide part mounted in a slot, a movement path of the guide part with respect to its free end during a switch-on process differs from a movement path after the switch-on process, so that with the latch - Mechanism on the one hand, a clamping of the switch-on energy storage takes place and on the other hand, a return movement is limited.

In a preferred embodiment, the ratchet mechanism has a pawl rotatably movable about the fixed axis between a first and a second position, on which a spring element engages. With such a pawl, the latch mechanism can be easily set up.

In a preferred embodiment, the fixed axis and the spring element are held on a fastening element. In such an arrangement, the pawl can be pivoted by means of the spring element in a simple manner between its first and its second position about the axis. In an advantageous embodiment, a stop element is provided on the guide part, which cooperates with a clamping recess on the pawl. The arrangement of the stop element on the guide part and the interaction with the

Clamping recess is a simple way to deflect the pawl from its first to its second position realized.

In a further development, the pawl on a locking recess. Upon a return movement of the switch-on energy storage device after a switch-on process, the stop element engages in the locking recess, so that a Rückbewegungsbe- limitation is formed in a simple and effective manner.

In a further preferred embodiment, in the tensioning device for the switching energy store, the clamping shaft rotatable by means of a drive wheel for clamping the single-shift energy storage is firmly connected to an eccentric and a cam and has a trigger stop, wherein the drive wheel coupled via a coupling with the clamping shaft is and the clutch is a latch assembly. By such a pawl arrangement, a clamping device is provided, which is designed in terms of their coupling in an advantageous manner simple and cost-effective, because the latch assembly requires relatively few components. It is prevented solely by the pawl arrangement that takes place by further actuation of the drive wheel after a clamping operation improper loading of the clamping device.

In a preferred embodiment, the pawl assembly has a pawl rotatably mounted on the drive wheel, and a fixed stop member is provided for controlling the pawl. An advantage of such an arrangement is that only by the rotatable arrangement of the pawl and the fixed stop element controlling the pawl and thereby decoupling of the drive wheel is made possible by the clamping shaft.

In an advantageous embodiment, the fixed stop element is arranged such that, when the turnout energy storage reservoir is tensioned, the pawl releases the tensioning shaft. Such an arrangement provides an easy way to decouple the tensioning shaft from the drive after a clamping operation with a tensioned switch energy storage.

In another advantageous embodiment, the pawl assembly has a fixedly connected to the clamping shaft and cooperating with the pawl carrier. The arrangement of such a driver is a simple and convenient way to couple the drive wheel and the clamping shaft with each other by means of the pawl to perform a clamping operation.

The latch assembly may be guided in different ways with respect to its free end, for example by a stationary guideway. In an advantageous development, the latch arrangement has a spring element. By providing a spring element ensures that the pawl is held during a clamping operation in a cooperating with the driver position.

In a further preferred embodiment of the invention, a position pin is provided on the drive wheel. The provision of such a position pin advantageously limits the rotation of the rotatably mounted pawl by that of the Spring element transmitted force, whereby a wear of the pawl is prevented by a sliding movement on the clamping shaft during rotation in preparation for a clamping operation of the circuit breaker.

In a further preferred embodiment of the invention, a locking mechanism for preventing the discharge of the power-on energy storage is provided with a push-button, which is coupled in an unlocked position of the locking mechanism by means of a power transmission element with a discharge trigger for discharging the switch-on energy storage via a positive connection, so that one on the push-button acting on the power transmission element in the discharge trigger for releasing the Einschaltergiespeichers is introduced, wherein the force transmission element is connected to form-closure interrupting means, which are arranged for transferring the locking mechanism into a locking position in which the positive connection is released, wherein the push-button and the force transmission element in the unlocked position are movably guided in a common longitudinal direction, so that a pushing movement of the push button The force transmission element is pivotably mounted, so that in a locking position, a direction of movement of the force transmission element is aligned at an angle to the pushing movement of the pushbutton, wherein the form-closure interruption means with the switching shaft of the switch and / or with a sub-switch are coupled. Advantageously, the power transmission element is not guided longitudinally movable, but reliably removable by initiating a rotational movement of the positive connection between the push-button and the release release. In addition, major Stroke movements avoided so that the locking mechanism is both reliable and compact.

In an advantageous embodiment, the form-locking interrupting means have a hinged to a stationary axis of rotation angle lever which is coupled to a return hanger with a return spring and at a connecting bearing by means of a pivoting lever with the power transmission element. According to this expedient further development, the movement for pivoting the power transmission element is initiated via an angle lever, thereby providing a multifunctional and at the same time compact locking mechanism.

According to an expedient further development of the angle lever is coupled by means of lever kinematics with a switching shaft of the sub-switch, that when the sub-switch is in a disconnected position, the angle lever pivoted against the spring force of a return spring and the power transmission element is transferred from the unlocked position into the locking position. In this way, the sub-switch can be coupled to the locking mechanism, so that when the sub-switch is in a disconnected position, an unloading of the switch-on energy storage and thus a connection of the switch, the example

Circuit breaker is made impossible. The coupling between the power transmission element and auxiliary switch via a suitable lever kinematics and on the already described angle lever. The power transmission element is mechanically coupled to the drive axle of the auxiliary switch. An unintentional triggering of the switch, such as a circuit breaker with an open, ie located in a disconnected position sub-switch, which is designed for example as a disconnector, is on these- avoided this way.

According to an advantageous development of the invention, the angle lever is coupled by lever kinematics with a Einschubver- locking a drawer so that when the

Switch is moved on the slot from a contact position, the angle lever is pivoted against the spring force of the return spring and the power transmission element is transferred from the unlocked position into the locking position. According to this further development of the invention, the lever kinematics is coupled with a slide-in lock. Moving a switch on a drawer, however, has the same effect as a separate auxiliary switch, especially in the case of air-insulated switches, so that the displacement on the drawer slide is equated here with the opening of the contacts of a secondary switch and thus with the coupling with a secondary switch. When moving the switch, for example, firmly connected to the switch contacts are separated from contacts that are permanently mounted on a switchgear. In this case, the switch is movably mounted in the switchgear by means of the insert.

According to a further expedient further development, the angle lever on a driver pin which extends in a long hole of a drive lever, wherein the drive lever is fixed at its end facing away from the slot on a cam element of the switching shaft of the circuit breaker, so that in a closed position of the switching shaft of Angle lever is pivoted to cancel the positive connection between pushbutton and discharge trigger. According to this advantageous further development, the angle lever and thus the force transmission element can be coupled to the position of the switching shaft of the circuit breaker, so that a discharge of the switch energy storage is made impossible if the Contacts of the switch are already in a contact position. In such a case, empty circuits would be triggered, wherein the energy of the switch-on energy storage is no longer converted into kinetic energy of the switching mechanism. However, the switching mechanism is heavily stressed by these empty circuits. Of course, it is also possible that the angle lever is coupled both via the drive lever with the switching shaft of the switch or circuit breaker, as well as an appropriate lever kinematics with the sub-switch and / or disconnector or with the lock of a drawer. The term disconnector unαfasst in such a case, several series-connected single breaker. The oblong hole of the drive lever is used for the mechanical separation of the lock, which is triggered by a secondary switch, and the lock, which is caused by the switching position of the switch shaft.

In an expedient embodiment, the locking mechanism, which is switchable between a locking position, in which the triggering of a switch-on is prevented by contacting the contacts of the circuit breaker, and an unlocking position, in which the triggering of the switch-on is enabled, linked to a power-on indicator and the power-on indicator on the power switch is visually perceptible. An on-hook indicator located directly on the circuit-breaker allows an operator to read the status of the circuit breaker directly on the circuit-breaker. So far, such a readiness display on a power switch insert with the disadvantage that the state of the circuit breaker was queried only indirectly via the circuit breaker slot. Another advantage is that an additional mechanism for a display on the circuit breaker not inserted.

In a preferred embodiment, the power-on read indicator is mechanical. Such a mechanical power-on indicator is easily connectable to the locking mechanism.

In a further preferred embodiment, the switch-on readiness display is optically realized. An optical power-on indicator is an advantageous way of visually sensing the state of the circuit breaker.

The invention will be described below with reference to embodiments with reference to figures of the drawing.

Show it:

Figure 1 is a schematic representation of the circuit breaker according to the invention in a first position;

Figure 2 is a schematic representation of the circuit breaker according to the invention in a second position;

FIG. 3 shows a schematic representation of a turn-on energy storage device in a first position;

FIG. 4 shows a schematic representation of the turn-on energy storage device in a second position;

FIG. 5 shows a schematic representation of the turn-on energy storage device in a third position; FIG. 6 a schematic representation of the turn-on energy storage device in a fourth position;

FIG. 7 shows a schematic representation of the turn-on energy storage device in a fifth position;

Figure 8 is a schematic side view of the clamping device;

Figure 9 is a front view of the tensioner of Figure £ in a first position during the tensioning operation;

Figure 10 is a front view of the tensioning device in a second position;

Figure 11 is a schematic representation of a

Embodiment of the locking mechanism in an unlocked position;

FIG. 12 shows the locking mechanism according to FIG. 11 in a locking position; and

FIG. 13 shows the locking mechanism according to FIG. 11 in a further locking position.

FIG. 1 shows a schematic representation of a circuit breaker 1 according to the invention. The circuit breaker 1 comprises a switch-on energy store 2, which is arranged on a fastening part 3 of the circuit breaker 1. The switch-on energy storage 2 is connected by means of an articulated connection to an eccentric 4 via a clamping shaft 5 with the cam 6. The cam 6 is rotated about one Axis 7 rotatably mounted and lies with its outer surface 8 on a cam member 9 of a switching shaft 10 at. The switching shaft 10 is rotatably mounted about an axis of rotation 11 and comprises a second driver 12 which is hingedly connected to a first end 13 of a cut-out energy storage device 14. A second end 15 of the Ausschaltenergiespeichers 14 is connected to a two-armed lever 17, at its first end 18 of the Ausschaltenergiespeicher 14 is pivotally coupled, and which is movably mounted about an axis of rotation 19. A second end 20 of the double-armed lever 17 in turn is pivotally coupled to a pole assembly 21. The pole assembly 21 includes a first movable contact 22 which is pivotally connected to the second end 20 of the double-armed lever 17, and a second contact 23 which is fixedly arranged.

In Figure 1, the circuit breaker 1 is shown in an off position. The turn-on energy storage 2 is in a position in which energy for triggering a switching operation is stored. In this position of the switch-on energy storage 2, the cam 6 is located on the cam member 9 of the switching shaft 10, wherein the Ausschaltenergiespeicher 14 is relaxed and the double-armed lever 17 is in a position in which the first contact piece 22 is disconnected from the second contact 23.

FIG. 2 shows the circuit breaker in a closed switching position, in which the first contact 22 and the second contact 23 are in communication with one another. By triggering a release mechanism, not shown, the switch-on energy storage 2 transmits the energy by means of the eccentric 4 and the clamping shaft 5 on the cam 6, which performs a counterclockwise rotation about its axis of rotation 7. When the cam 6 rotates, the cam 9, the switching shaft 10 is moved to rotate counterclockwise about its axis of rotation 11. The rotation of the shift shaft 10 leads to a movement of the driver 12 in the counterclockwise direction, whereby the hinged with the Ausschaltenergiespei- rather 14 connected double-armed lever 17 is also rotated counterclockwise about its axis of rotation 19. In this case, the first end 18 of the double-armed lever 17 moves down and the second end 20 upwards. By this movement, the first contact piece 22 is pressed against the second contact piece 23, the contact of the pole mechanism 21 is closed. Furthermore, in the movement of the driver 12 of the Ausschaltenergiespeicher 14 is tensioned. Figure 2 shows the position of the switched-on circuit breaker 1, in which a kinematic chain of switch shaft 10 and Ausschaltenergie- memory 14 are fixed almost in an extended position, ie an axis from the first end 13 of the Ausschaltenergiespeichers 14 to the second end 15 of the Ausschaltenergiespeichers 14 is in an angle of almost 180 degrees to an axis of the driver 12 to the axis of rotation 11 of the switching shaft 10th

Due to the arrangement of the kinematic chain of the switch shaft 10 and Ausschaltenergiespeicher 14 almost in an extended position only a small generated by Ausschaltenergiespeicher 14 torque acts on the shift shaft 10 so that it can be fixed in the position shown in Figure 2 by a simple, not shown latch mechanism.

When the switching shaft 10 is fixed, by means of a drive device which is connected via a gear with the clamping shaft 5 and thus with the cam 6 and the switching energy storage 2, a renewed clamping operation for the switching energy storage 2 done. By the drive, the cam 6 is caused to rotate further counterclockwise, the outer surface 8 of the cam 6th no longer in contact with the cam member 9 of the switching shaft 10 is. The switching shaft 10, which is fixed by the latch mechanism, remains in the position of Figure 2, so that the contact pieces 22 and 23 remain in contact with each other. The drive causes via the connection 5 at the same time a clamping of the switch-on energy storage 2.

If the pawl mechanism is released to fix the shift shaft, the torque generated by the Ausschaltenergiespeicher 14 is sufficient to rotate the not in contact with the cam β switching shaft 10 in a clockwise direction about its axis of rotation 11, wherein by the spring force of the Ausschaltenergiespeichers a rotation of the two-armed Lever 17 is effected in a clockwise direction and the first contact piece 22 is separated from the second contact piece 23. The circuit breaker 1 is again in a position, as shown in Figure 1, with a tensioned switch energy storage 2 and separate contacts 22, 23rd

FIG. 3 shows a switch-on energy storage device with a spring element 2 as switch-on energy store 2, which is connected at a first end 24 to the attachment part 3 by means of a latch arrangement 25 and to the eccentric 4 at a second end 27. The eccentric 4 and the cam 6 are fixedly arranged on the clamping shaft 5.

The guide member 28 is rigidly connected to the second end 27 and by means of an axis 31 which extends through the slot 29 on the attachment part. 3 stored. The pawl assembly 25 includes a likewise rotatably mounted on the axis 31 pawl 32 and a spring 33 which is secured at its first end 34 to the pawl 32 and at its second end 35 on the fastening part 3. The GE- Line 38 shown in phantom corresponds to the trajectory of the second end 27 and the dashed line 39 of the path of movement of the stop element 30 in a switching or clamping operation of the switch energy storage. The trajectory 39 is characterized on the basis of the kinematic arrangement of the system in that during the movement of the stop element 30 from an upper to a lower dead center of the switch energy storage a different trajectory ü- is covered than in the unverted movement, whereby the latching with the pawl 32 is enabled.

In Figure 3, the switch-on energy storage is in a tensioned state, wherein the spring element is under pressure voltage. The second end 27 is at the upper reversal point of its trajectory curve 38, the stop member 30 is located near the upper knee point of its trajectory 39, and the axis 31 is located at the lower stop of the slot 29 of the guide member 28. The pawl 32 is by the tensile force of the spring 33 held in a first position.

If a switching operation is triggered, the energy stored in the switch-on energy store 2 is transmitted via the eccentric 4 and the clamping shaft 5 to the cam 6 and thereby to the switching shaft 10. In this case, the second end 27 moves along the line 38 in the counterclockwise direction and the stop member 30 on the line 39 in a clockwise direction.

FIG. 4 shows the turn-on energy store 2 with the latch mechanism in a position shortly after the triggering of a switching operation, wherein the turn-on energy store 2 has partially relaxed. The energy of the switch-on energy storage 2 leads to the rotation of the cam 6 via the clamping shaft 5 and thus to a movement of the switch shaft 10. The second end 27 is in a 9 o'clock position on the line 38 while the abutment member 30 has moved down the line 39. The axis 31 is located relative to the slot 29 due to the movement of the guide member 28 connected to the second end 27 in a position close to the second end of the slot 29th

FIG. 5 shows the switch-on energy store 2 in a completely relaxed state, in which the second end 27 and the stop element 30 have reached the lower return points of the respective lines 38 and 39. In this position, the axis 31 is located at the upper end of the slot 29. The stop element 30 is located on the pawl 32 in a clamping recess 36 at. In this position, the stop member 30 begins to move the rotatably mounted pawl 32 against the spring force of the spring 33 from the mounting part 3, wherein the spring 33 is tensioned.

Figure 6 shows the position of the switch-on energy storage 2 and the latch mechanism directly after the switching operation of the circuit breaker. The cam 6 is not in contact with the switching shaft 10, the switching shaft 10 and thus the contacts of the circuit breaker are in a locked and on position. Due to the energy of the switch-on energy store 2, which is partly converted into kinetic energy during the switching process, the cam 6 and the eccentric 4 rotate beyond their reversal points, the guide element 28 moving upwards and the stop element 30 leaving the clamping recess 36 of the pawl 32. At this moment, the pawl 32 is moved back by the tensile force of the spring 33 in its first position. By further rotation of the eccentric 4 of the switch-on energy storage 2 is partially stretched, causing the switch-on energy storage 2 performs a return movement. This return movement is determined by the the spring 33 is limited to its first position moved back pawl 32, as explained with reference to Figure 7.

FIG. 7 shows the position of the switch-on energy store 2 and the latch mechanism after the switching operation of the circuit breaker with the stop element 30 engaged. The stop element 30 engages in the locking recess 37 of the latch 32 and is locked. By this locking a further return of the turn-on energy storage 2 is reliably prevented. This can immediately switch off the circuit breaker immediately and take place a new clamping operation for the switch energy storage.

FIG. 8 shows a clamping device for the turn-on energy storage 2 in a schematic side view. The device comprises a clamping shaft 5, at the first end 40 of the eccentric 4 is arranged. At the second end 41 of the clamping shaft 5, the cam β is firmly connected to the clamping shaft 5. On a housing part 42 of the clamping device, in which the clamping shaft 5 is rotatably supported by ball bearings 42a, 42b, a stop element 43 is fixedly arranged. With the clamping shaft 5 is fixedly connected to a driver 44 which cooperates via a pawl 45 with a drive wheel 46. The pawl 45 is rotatably arranged by means of a spring element 47 on the drive wheel 46. The drive wheel 46 is the last drive wheel of a transmission, not shown, for example, a worm gear which is driven by means of a hand crank or a motor drive. On the eccentric 4 of the switch-on energy storage 2 is arranged articulated. A trigger stop 49 is as a stop for the

Clamping device provided after a clamping operation, wherein the trigger stop can be triggered by means of a mechanism described with reference to Figures 11 to 13 to to perform a switching operation of the circuit breaker with the switching power storage 2 stretched.

Figure 9 shows a front view of the clamping device according to the invention in a position during the clamping operation of the switch-on energy storage. The pawl 45 is at its end 50 via the contact surface 51 with the driver 44 in contact. At the end 50 of the pawl 45, a stop 52 is formed, which bears against a drive pin 46 on a position pin 53. By a brought about via the drive rotation of the drive wheel 46, the clamping shaft 5 and thus the eccentric 4 is offset by the voltage applied to the driver 44 pawl 45 in a clockwise direction. As a result, the pivotally mounted on the eccentric 4 Einschaltergiespeicher 2 is stretched. In the position of Figure 9, the eccentric 4 is in a position in which the switching energy storage 2 is below its maximum compression spring tension. In order to produce a torque necessary for triggering a switching operation, the eccentric 4 must be turned further into a position deviating by a few degrees from this maximum stretch position.

FIG. 10 shows the position of the pawl 45 after a completely executed clamping operation of the switch-on energy storage device 2. Upon rotation of the drive wheel 46 in the clockwise direction, the pawl 45 comes into contact with the stop member 43, whereby a rotation of the pawl 45 is triggered about the axis 48 in the counterclockwise direction, so that the contact surface 51 is no longer applied to the driver 44 and the pawl from the driver 44 has swung away. The clamping shaft 5 is decoupled in this position from the drive wheel 46 and thus from the drive. By a further rotation of the drive wheel 46 thus no force is exerted on the cam or the eccentric more. During a switch-on process, the release stop 49 is released, so that the energy stored in the switch-on energy storage device 2 is used to rotate the cam plate 6 connected to the clamping shaft 5 and thus to close the movable contact of the circuit breaker. In this case, the tensioning shaft 5 and the parts connected to it rotate in the direction of the arrow 54 of FIG. 10 until the switch-on energy storage 2 is completely relaxed. The drive wheel 46 with the pawl 45 remains in the position of FIG. 10. As a result, no energy is transmitted to the drive wheel and the drive during the switching operation. If a new clamping operation is carried out after the switching operation, the drive wheel 46 is likewise moved in the direction of the arrow 54 via the drive. The pawl is thereby deflected further on the stop element 43 and moves along it until, due to the rotation of the drive wheel 46, the pawl 45 is no longer in contact with the stop element 46 and is rotated in the direction of the tensioning shaft 5 by the force exerted by the spring element 41 until the pawl 45 abuts the position pin 53. By the position pin 53 prevents the pawl 45 rests during the further rotational movement of the drive wheel 46 on the clamping shaft 5. Due to the further rotational movement, the pawl 45 comes into contact with the driver 44, so that the drive wheel 46 and the clamping shaft 5 are coupled again and the switch-on energy storage 2 is stretched again.

Figure 11 shows an embodiment of a locking mechanism 55 in a schematic representation. The locking mechanism 55 has a pushbutton 56 which rests with its pin extension 57 on a force transmission element 58. The power transmission element 58 has a guide frame 59 in which a displacement member 60 is movably guided in a linear direction of movement. Of the Guide frame 59 is movably held about a stationary pivot bearing 61 and connected to a bearing 62 with a pivot lever 63.

In the unlocking position shown in FIG. 11, the force transmission element 58 rests with its longitudinally displaceable displacement element against a discharge trigger 64 which, upon actuation, ie by initiating a pushing movement in the direction of the arrow shown in the discharge trigger 64, releases a locking of the switched-on energy store 2 (not shown in FIG whereby the release stopper 49 described with reference to FIG. 8 is released, so that the turn-on energy storage device 2 discharges.

The switch-on energy storage 2 is mechanically coupled in the embodiment shown with the switching shaft 10 of the circuit breaker of Figure 1. The introduction of a rotational movement in the switching shaft 10 transfers the contacts of the circuit breaker from a contact position in which the switching contacts of the switch abut each other, in a

Separation position in which the contacts of the switch are separated from each other or from the disconnected position to the contact position, as already described with reference to Figures 1 and 2.

The shift shaft 10 is pivotally connected to the cam member 9 at a bearing 66 with a drive pivot lever 67. The drive pivot lever 67 has, at its end facing away from the bearing 66, a slot 68 into which a follower pin 69 of an angle lever 70 extends, which is movable about a stationary pivot bearing 71. The angle lever 70 is pivotally connected at its bearing 72 with the pivot lever 63. At the return spring bearing 73, the angle lever 70 is further coupled to a return spring 74, which is located in the showed position the driver 69 of the angle lever 70 at the upper end of the elongated hole 68 holds. The upper boundary of the elongated hole 68 thus forms a kind of abutment.

FIG. 12 shows the locking mechanism according to FIG. 11 in a locking position in which the circuit breaker is displaced on a slot with separation of contacts of a circuit breaker. By way of derogation, the angle lever 70 is coupled to the drive shaft of a separate disconnector or secondary switch (not shown). Of course, both variants can be realized together within the scope of the invention.

The movement, which is necessarily introduced, for example, for displacing the switch on the insertion guide, is introduced into the angle lever 70 via a lever mechanism, not shown in FIG. 12, which then moves in the arrow direction 75 shown. The lever mechanism is linked, for example, with a bearing 76 of the angle lever 70. Due to the connection of the angle lever 70 with the power transmission element 58 via the pivot lever 63, the power transmission element 58 is given away in a direction indicated by the arrow 77. The direction of movement of the displacement element 60 of the force transmission element 58 is thus aligned at an angle and to the direction of movement of the pushbutton 56, in which the pin extension 57 of the pushbutton 56 extends. In this way, the switch-on movement of the pushbutton 56 can no longer be transferred to the discharge trigger 64, so that discharging of the turn-on energy store 2 is rendered impossible.

FIG. 13 shows the locking mechanism according to FIG. 11 in a further unlocking position, wherein the unlocking position is brought about by a movement of the switching shaft 10. was led. A rotation of the switching shaft 10 causes a rotation of the cam member 9 in the arrow direction 78 shown, and thus an offset of the drive pivot lever 67 down. The protruding into the slot 68 of the drive pivot lever 67 driver 69 of the angle lever 70 is also moved in this way down, so that the angle lever 70 is pivoted in the direction of arrow 79 shown. Due to the lever connection 63 between the guide frame 59 and the angle lever 70, the force transmission element 58 is also pivoted in the direction of the arrow 77. By turning the switching shaft 10 thus not only the switching contacts of the switch poles of the switch, but also a locking position of the locking mechanism have been brought about, in which a relaxing of the not shown switch energy storage 2 by pressing the push button 56 is prevented.

A switch-on readiness indicator (not shown in FIG. 1) can be arranged on the locking mechanism 55, for example on the guide frame 58. By connecting such a display unit to the guide frame 58, the state of the circuit breaker can be directly indicated by the different positions of the guide frame 58.

LIST OF REFERENCE NUMBERS

1 power switch

2 single-energy storage

3 fixing part

4 eccentrics

5 tensioning shaft

6 cam

7 axis of rotation

8 outer surface

9 cam element

10 shift shaft

11 axis of rotation

12 drivers

13 First end

14 power-off memory

15 Second end

16 actuating mechanism

17 Double-armed lever

18 First End

19 axis of rotation

20 Second end

21 pole mechanism

22 First contact

23 Second contact

24 First end of the turn-on energy storage

25 jack arrangement

27 Second end

28 guide part

29 long hole

30 stop element

31 axis

32 pawl

33 spring 34 First end spring

35 Second end spring

36 clamping recess

37 locking recess

38 trajectory second end

39 trajectory stop element

40 First End

41 Second end

42 housing part

43 Fixed stop element

44 drivers

45 pawl

46 drive wheel

47 spring element

48 axis

49 trigger stop

50 end latch

51 contact surface

52 stop

53 Positioning pin

54 arrow

55 locking mechanism

56 pushbuttons 56

57 pin extension

58 power transmission element

59 guide frame

60 shift element

61 pivot bearings

62 bearings

63 pivot lever

64 discharge trigger

66 bearings

67 Drive lever

68 slot Carrier pin

bell crank

Pivot bearing 71

Warehouse 72

Rückholfederlager

return spring

arrow

camp

arrow

Claims

claims

1. circuit breaker (1) with at least one pole arrangement

(21), which comprises a movable contact (22), a rotatably mounted double-armed lever (16) for opening and closing the movable contact (22), a switch-on energy storage (2), and with a cam (6), which with the switch-on energy store (2) and via an actuator (10) to a first end (18) of the lever (17), wherein the second end (20) of the lever (17) with the movable contact piece (22) of the pole arrangement (21 ), and at least one breaking energy store (14), characterized in that the actuating member is a rotatably mounted by the cam (6) rotatably mounted switching shaft (10) with the first end (18) of the double - armed lever (17) via the Off energy storage (14) is connected.

2. A circuit breaker according to claim 1, characterized in that in a multi-pole arrangement, the switching shaft (10) extends over the entire pole arrangement and for each movable contact has a driver (12) to which a first end (13) of the respective Ausschaltenergiespeichers (14 ) is arranged articulated.

3. A circuit breaker according to claim 2, characterized in that the Ausschaltenergiespeicher (14) at a second end (15) to the first end (18) of the double-armed lever (17) is pivotally connected.

4. The circuit breaker according to claim 1, wherein the cut-out energy store (14) comprises a spring element.

5. A circuit breaker according to one of the preceding claims, characterized in that the turn-on energy storage (2) comprises a spring element which is mounted at a first end to a housing part (3) and at a second end via a

Clamping shaft (5) with the cam (6) is coupled.

6. Circuit-breaker according to one of claims 1 to 4, characterized in that the switch-on energy storage (2) is held at a first end (24) and at a second end to the eccentric (4) is connected to a tensioning device, with the Rückführungsungsbegrenzende means cooperate, and the means (25,28,31,32,33) having a at the first end (24) of the Einschaltergiespeichers (2) arranged latching mechanism (25).

7. The circuit breaker according to claim 6, characterized in that the means (25, 28, 31, 32, 33) is a latch mechanism

(25) triggering guide part (28), with which the first end (24) of the switch-on energy storage (2) on a fixed axis (31) by means of a guide member (28) formed in the longitudinally movable hole (29) and which with the second end (27) of the switch-on energy store (2) is connected.

8. Circuit breaker according to claim 7, characterized in that the latch mechanism (25) has a pawl (32) rotatably movable about the fixed axis (31) between a first and a second position and engaged by a spring element (33).

9. The circuit breaker according to claim 8, characterized in that the fixed shaft (31) and the spring element (33) are held on a fastening element (3).

10. Circuit breaker according to claim 8 or 9, d a d e r c h e c e in n e c e s that a stop element (30) is provided on the guide member (28) cooperating with a clamping recess (36) on the pawl (32).

11. The circuit breaker according to claim 10, characterized in that the pawl (32) has a locking recess (37).

12. The circuit breaker according to one of claims 6 to 11, characterized in that in the tensioning device for the switch energy storage (2) - one by means of a drive wheel (46) rotatable clamping shaft (5) for clamping the switch energy storage (2) each with an eccentric (4 ) and connected to a curvature disc (6),

- Which has a trigger stop (49), and - in which the drive wheel (46) via a coupling

(43,44,45,47,48,53) is coupled to the tensioning shaft (5), and

- The coupling (43,44,45,47,48,53) a pawl assembly (43,44,45,47,48,49).

13. A circuit breaker according to claim 12, characterized in that the pawl assembly (43,44,45,47,48,53) has a pawl (45) rotatably mounted on the drive wheel (46), and - a fixed stop member (43) to control the

Pawl (45) is provided.

14. The circuit breaker according to claim 13, characterized in that the fixed stop element (43) is arranged such that when the switch-on energy store (2) is tensioned, the pawl (45) releases the clamping shaft (5).

15. Circuit breaker according to claim 14, characterized in that the latch arrangement (43,44,45,47,48,53) has a driver (44) fixedly connected to the tensioning shaft (5) and cooperating with the pawl (45).

16. The circuit breaker according to claim 15, characterized in that the latch arrangement (43,44,45,47,48,53) is a spring element

(47).

17. The circuit breaker according to claim 16, wherein a position pin (53) is provided on the drive wheel (46).

18. Circuit breaker according to one of the preceding claims, characterized in that a locking mechanism (55) for preventing the discharge of the power-on energy storage is provided with a push-button (56), which in an unlocked position of the locking mechanism (55) by means of a

Power transmission element (58) is coupled to a discharge trigger (64) for discharging the switch-on energy storage (2) via a positive connection, so that on the push button (56) acting on the power transmission element (58) in the discharge trigger (64) for relaxing the switch energy storage (2) is insertable, wherein the force transmission element (58) with form closure interrupting means (63, 70) is arranged, which are arranged for transferring the locking mechanism (55) in a locking position in which the positive connection is released, wherein the pushbutton (56) and the power transmission element (58) are movably guided in the unlocked position in a common longitudinal direction, so that a push movement of the pushbutton (56) via a longitudinal movement of the force transmission element (58) in the Einschaltauslöser (64) is insertable, wherein the force transmission element (58) mounted pivotably is, so that in a locking position, a direction of movement of the force transmission element (58) is aligned at an angle to the pushing movement of the pushbutton (56), wherein the positive locking interrupting means (63, 70) are coupled to the switching shaft (10) of the circuit breaker and / or to a secondary switch.

19. The circuit breaker according to claim 18, characterized in that the interlocking means comprise a hinged to a fixed axis of rotation angle lever (70) which is coupled to a return spring (73) with a return spring (74) and at a connecting bearing (72) by means of a pivot lever (63) with the force transmission element.

20. The circuit breaker according to claim 19, characterized in that the angle lever (70) is coupled by means of lever kinematics with a switching shaft of the sub-switch so that when the sub-switch is in a disconnected position, the angle lever (70) against the spring force of the return spring (74) is given away and the force transmission element (58) is transferred from the unlocked position into the locking position.

21. The circuit breaker according to claim 19 or 20, characterized in that the angle lever (70) is coupled by means of lever kinematics with a slide-lock of a drawer so that when the switch is moved to the slot, the angle lever against the spring force of the return spring (74) is given away and the power transmission element (58) is transferred from the unlocked position to the locking position.

22. The circuit breaker according to claim 19 or 20, characterized in that the angle lever (70) has a driver pin (69) which extends in a slot (68) of a drive lever (67), wherein the drive lever (67) at its from

Long hole (68) facing away from the end of a cam element (9) of the switching shaft (10) is fixed, so that in a closed position of the switching shaft (10) of the angle lever (70), canceling the positive connection between pushbuttons (56) and discharge trigger (64) is pivoted.

23. Circuit breaker according to one of claims 18 to 22, characterized in that the locking mechanism which between a locking position, in which the triggering of a switch-on is prevented by contacting the contacts of the circuit breaker, and an unlocking position in which the triggering of the switching operation allows light is switchable, is associated with a power-on readiness indicator, and that the power-on indicator is visually perceptible on the switch.

24. A switch according to claim 1, wherein a switch-on readiness indication is mechanical.

25. A switch according to claim 1, wherein a switch-on readiness indication is optically realized,