EP3282464A1 - Jump drive and switching device with jump drive - Google Patents

Abstract

A jump drive (5) for a switching device (1) has an energy store (13), a pendulum movable part (7) and a securing device (17) for the moving part (7). The securing device (17) ensures a position of the pendulum moving part (7) by means of a force effect, wherein a reversal of direction of the moving part (7) takes place against the force effect.

Description

The invention relates to a jump drive for a switching device having an energy storage device, a pendulum movable part of a transmission and a securing device for the moving part.

A jump drive is for example from the published patent application DE 10 2014 203 902 A1 known. The local jump drive is designed for a switching device, said jump drive has an energy storage. The energy storage interacts with a pendulum moving part of a transmission, wherein a securing device is provided to prevent unwanted movement of the moving part. The securing device is designed such that in the moving part recesses are introduced, in which a locking element of the securing device can be retracted. As a result, a movement of the local Bewegtteiles be blocked. An extension and retraction of the locking element is controlled in response to a change in position of the local energy storage.

The disadvantage of such a solution is that time intervals occur in which the moving part is unsecured. However, such unsecured time intervals represent a risk for the reliable functioning of the jump drive. Although a low-backlash design of the mechanism can reduce the unsecured time intervals. However, the effectiveness of this measure is removed with increasing wear, so that the risk of undefined movements of the moving part increases.

Thus, it is an object of the invention to provide a jump drive, which has improved reliability.

The object is achieved in a jump drive of the type mentioned above in that a direction reversal of Bewegtteiles takes place against a force of the safety device.

A jump drive for a switching device is a device which serves to operate a switching device. A switching device may have relatively movable switching contact pieces, which are to be moved for changing a switching stand relative to each other. To induce a relative movement of the switching contact pieces to each other, a jump drive can be used. A jump drive has the advantage that a given movement, ie the movement, which is used for the relative movement of the switching contact pieces, can run consistently independent of external boundary conditions. For this purpose, the jump drive on an energy storage, which temporarily stores a necessary for actuating or for delivering a movement to relatively movable switching contact pieces energy. The energy store can be, for example, a mechanical energy store, such as a storage spring, which has a gas spring, a hydraulic spring, a mechanical spring, etc. act. To be able to remove energy from the energy store, the energy store must first be charged. The charging of this energy storage is carried out regardless of the nature of the delivered by the jump drive movement. For example, the energy store can be charged during a longer time interval than the time interval in which a discharge of the energy store is provided. A jump drive can work in such a way that when a switching operation is triggered, charging of the energy store first takes place. Upon reaching a predetermined state of charge of Energy storage can (zwangszweise) take place a predetermined jump-like unloading of the energy storage. A jump drive can be set up such that charging of the energy store takes place only when a switching operation is requested, wherein the energy store is at least partially discharged after the switching operation has taken place. This has the advantage that charging and thus loading of the energy store only takes place when necessary and only temporarily. Provision of energy in the energy storage, for example, between two switching operations is not required.

The jump drive can have a transmission which has a pendulum-capable moving part. The energy storage may be part of the transmission, wherein the energy storage can be charged and / or discharged via the transmission. A pendulum moving part has the advantage that a reversal of a direction of movement can be generated at the moving part. Thus, the moving part between a point A and a point B can be moved alternately, with both a Hinals and a return movement, the delivery of a sudden drive movement by the jump drive is possible. The moving part can also make a sudden movement. As a result, both a switch-on movement and a switch-off movement on the switching device can be carried out with one and the same jump drive, each with a jump-like motion profile. A pendulum can be provided along various trajectories. Thus, a pendulum moving part can for example be moved in translation or moved on a circular path or perform on a otherwise suitable curve a reciprocating motion. A forward movement, for example, serve to turn on a switching device. A return movement, for example, serve to turn off a switching device. The pendulum moving part can take a rest position in the turning points. By means of a securing device for the moving part, it is possible, the pendulous Moving part in suitable positions, for example, in end positions (turning points) of Bewegtteiles hold. Thus, an undefined moving of the moving part can be prevented. Advantageously, the securing device can be designed such that a plurality of layers of the moving part can be determined by the securing device. Preferably, the moving part in the turning points, in which a movement reversal of the moving part during commuting occurs, be determined by the securing device. As a result, it is possible, if necessary, to have only one passage of the moving part from one end point to another end point of the pendulum moving part. In particular, the securing device can drive the moving part into a position to be secured.

The securing device can exert a force on the pendulum moving part. Due to the force effect, the free mobility of the moving part can be restricted. In this case, for example by means of weight, spring force or other suitable forces, a positional fixation of the pendulous moving part can be made. A reversal of the Bewegtteiles, z. B. in inflection points of a trajectory of the pendulous moving part, can be carried out such that a force caused by the securing device must be overcome. During a reversal of the direction of movement, a constant securing of the pendulum-capable moving part is provided. In particular, a force effect on the moving part can be exerted by the securing device during a pendulum phase at each time of the pendulum or at each location of the movement path of the moving part. This prevents free oscillation. On the one hand, an increased force is required to drive the moving part in order to overcome the force effect of the safety device, on the other hand, however, an uninterrupted securing the pendulum moving parts is achieved. The use of a force-controlled safety device makes it possible, for example, a self-regulating action allow the safety device. For example, certain limit forces can be defined depending on the force relationships occurring at the transmission, below which the safety device is effective, whereas when the limit forces are exceeded the force effect of the safety device is neutralized and a movement of the pendulum moving part is forced (overcoming the force effect of the safety device).

A further advantageous embodiment can provide that the moving part and the securing device form a bistable system.

The moving part can oscillate between end positions. In this case, the securing device can be designed such that it causes in several points of the movement path of the pendulum moving part, in particular in the turning points of a pendulum movement, a stabilization or determination of the moving part. By such an action, a symmetrical moving part can be formed, wherein a forward and a forth movement of the moving part can be made in each case abruptly. As a result, for example, both a switching on and off can take place abruptly, so that both switching in and out as well as switching off relatively movable switching contact pieces has a reliable switching behavior. By bistable layers, in particular of the moving part, a new switching movement can be triggered immediately after completion of a switching movement. In addition to the stable positions, ie preferably the end positions / turning points of the pendulum moving part, unstable layers can result, which can be overcome by the action of the safety device. The securing device can drive the pendulum-capable moving part back into stable positions, preferably into the respective end position. Undefined labile intermediate positions can be overcome quickly and a backup in the end positions can take place. An end position of the pendulum Moving part may correspond to an "on" state or an "off" state of a switching device.

A further advantageous embodiment can provide that the moving part assumes a labile state when the energy store is charged.

When charging the energy storage can be provided that a labile position is occupied by the moving part. The moving part can be driven, for example, in an intermediate position between the stable end positions, to which example, the energy from the charged energy storage can be used. For example, the energy from the charged energy store can have such amounts that the force effect of the safety device is exceeded on the pendulum-capable moving part, so that the effect of the safety device is neutralized. Preferably, upon reaching the labile state, a jump-like deflection of the pendulum-capable moving part can be effected. This movement can be supported at least temporarily by the securing device.

Furthermore, it can be advantageously provided that the moving part acts as a deadtime member in the transmission.

A dead-time member within a transmission allows a movement to be delayed (or a transmission of a movement is temporarily suspended). Through the use of a dead-time element, it is possible to provide a time interval for charging the energy store, wherein no change occurs at the output of the transmission. Within the transmission so an idle possibility is generated, which allows a temporary decoupling of a transmission of a movement. Thus, it is possible, for example, that when using a storage spring as an energy storage a tensioning of the storage spring takes place, wherein a tensioning movement due to the function of the deadtime member by the transmission is not transmitted immediately. As a result, the possibility is given to tension the storage spring during a switching operation and to suddenly discharge the energy stored in the storage spring.

Furthermore, it can be advantageously provided that the securing device has a dead center.

By a dead center spring is possible to realize a stable securing a position of the pendulous moving part in several positions on the securing device. Thus, before or after passing through a dead center of a dead center, a stable pressing or a stable generation of a force effect to secure a position of the moving part of the securing device are issued. The sense of direction of the force effect of the dead center spring can vary. A dead center spring can be realized for example by using a toggle lever, wherein in a stretched position of the toggle lever, a dead center position can be defined. Accordingly, a dead center spring is also formed in this way, which allows by passing through a dead center during a change between both sides of the dead center lying end positions. In this case, a lever arm of a toggle mechanism can be subjected to an elastic deformation, so that a driven turning over of the toggle lever is made possible.

A further advantageous embodiment may provide that the energy store has a dead center.

The energy store may have a dead center spring. In this case, the energy storage itself or a storage spring, which serves as an energy store, act as dead center. As a result, it is possible, for example, to perform a slow tensioning of the storage spring until reaching or passing through a dead center, with a passing of the dead point of the storage spring a sudden release or Unloading the storage spring occurs. Thus, it is possible to achieve at a jump drive regardless of the form of charging an energy storage always a defined similar delivery of a drive movement of a jump drive.

Furthermore, it can be advantageously provided that the dead centers of the Totpunktfedern the securing device and the energy storage couple opposing force effects on the moving part.

Several dead center springs can interact with each other in their dead center positions. For example, it is possible for the dead center springs to couple opposing force effects onto the moving part. As a result, for example, during a switching movement, overcoming the one dead center of the one dead center spring can be forced by a movement of the other dead center spring. Furthermore, there is the possibility that the dead center spring of the energy accumulator passes through its dead center and counteracts the force effect of the safety device (dead center spring) and the dead center spring of the safety device is driven by a dead center.

It can be advantageously provided that passing through a dead center of a dead center, in particular the energy storage leads to a change of a stable state of the bistable system.

By successively passing dead centers of several dead center springs, it is ensured that at least one of the dead center springs drives the moving part into a defined (end) position. During a passing through a dead center of a dead center, the other dead center spring can maintain a backup function or force a safe driving a movement in a preferred direction or with a preferred sense of direction. With the passing through the dead center of the dead center of the energy storage is so Possibility to force a reversal of a pendulum motion of the moving part. As a result, a condition is provided to make the jump drive clear for a reverse shift movement and to allow a "backward" passing through a movement of the transmission.

Advantageously, it can be provided that the dead centers of Totpunktfedern be followed in chronological succession.

The dead-center springs can advantageously pass through their respective dead point in temporal succession. Thus, a sequence of movements can be forced, after which the transmission works. For example, it can be provided that, both in the switch-on as well as in the switch-off, so in each case after a reversal of motion, in particular the pendulum moving part, the respective trajectories are traversed in the transmission with reversed sense of direction. In this case, for example, during a switch-on movement, the section of a movement path, which initially serves to tension or charge an energy store, during a switch-off movement corresponds to the section of the movement path for discharging the energy store (and vice versa). Thus, in the case of a forward movement of the pendulum moving part, the interval of the movement, which serves to tension the energy store, serves for relaxing the energy store (and vice versa) during a return movement. Thus, a closed trajectory (pendulum movement) is achieved, with alternate intervals of the trajectory serve both a charge of the energy storage and a discharge of the energy storage. The path of the forward movement of the moving part of the web corresponds to the return movement of the moving part. Loading and unloading sections of the web can change (each other) (down).

It can be advantageously provided that by driving energy from the energy storage of the jump drive the pendulum moving part is driven.

The energy storage of the jump drive is used for temporary storage of energy. Thus it is possible to charge the energy store during a comparatively long time interval and to allow the energy store to be discharged during a comparatively short time interval. The distance traveled for loading and unloading should be the same length. Thus, a symmetrical sequence of movement, in particular of the moving part, can take place. Regardless of a driving movement or an incoming energy at the transmission is always a defined delivery of a drive energy, for example, on switching contact pieces of a switching device. The pendulum moving part may for example be a lever which rests on a drive shaft, wherein the drive shaft can perform a rotational movement. Accordingly, the moving part can be arranged for example in the manner of a one-armed lever or two-armed lever on the shaft and perform a pivoting movement. Alternatively, it can also be provided that the pendulum moving part is arranged, for example linearly displaceable and can be delivered by the transmission, for example, a linear movement.

Furthermore, it can be advantageously provided that the transmission has a link, via which a loading and / or unloading of the energy storage is controlled.

A backdrop controls by its shaping a transmission of a movement. For example, a link in the manner of a groove or a slot or a circumference of a cam can be used to transmit a movement. In this case, a scanning element, in particular, scan a body edge of the scenery and in a relative movement of the scenery to the sensing element, a relative movement can be forced on the sensing element. Conversely, a movement can be applied to the sensing element and, consequently, a movement of the scenery can be achieved. This should be the form the backdrop must be designed so that it acts self-locking, so that an independent return movement or a reset is prevented. A backdrop, for example, have the course of a circle segment about a pivot point, wherein the scenery can be scanned by a scanning element. For example, a sensing element may be a sliding block which is slidably positioned in a groove. With a change in position of the backdrop, a movement can result on the sliding block, whereby a movement can be coupled out of the scenery (and vice versa). The scenery, for example, cause a positive guidance of a sensing element. Furthermore, can be done via a backdrop control of a process. Thus, for example, a slide control can be realized, by means of which certain process steps can be triggered as a function of progressing a relative movement between slide and scanning element. Thus, it is advantageous, for example, if charging and / or discharging of the energy store can be controlled as a function of the position of a slide. In this case, the scenery can serve, for example, a forced guiding of a storage loading movement. However, it can also be provided that the scenery is forcibly guided by a movement caused by the energy storage. Advantageously, both a guiding of a charging movement and a discharging movement of the energy store can be forced through the scenery during a switching operation. On the other hand, a movement of the scenery can be forced by the energy storage. By means of a gate, a dead-time member can be formed by a movement is not transmitted or neutralized due to the backdrop shape.

Furthermore, it may be advantageously provided that the link has at least one end stop for limiting a detectable by the transmission movement.

The gate may also provide an end stop to limit movement that can be issued by the transmission. In this case, the scenery, for example, have two ends arranged end stops, between which the backdrop can be sampled. With a striking a sensing element on the end stops a movement can be initiated on the backdrop or from the backdrop, whereby, for example, a drive movement can be delivered by the jump drive. The scenery can, for example, act as deadtime member. In particular, the backdrop can be arranged on the pendulous moving part.

An advantageous embodiment may provide that the pendulum movable part is rotatably mounted.

A pendulum moving part can be arranged rotatably. In this case, the moving part can be arranged for example radially from the axis of rotation forbearing. This gives the possibility of pivoting the moving part about an axis of rotation. A pivoting offers the advantage that, for example, driving through or taking a dead center, for example, a dead center spring can be caused in a simple manner, before and after passing through the dead point still a sectionwise rotational movement of the pendulous moving part can be possible. A link may extend at least in sections, for example, aligned substantially radially to the axis of rotation of the moving part.

A further advantageous embodiment can provide that a storage loading mechanism has a particular two-armed storage loading lever, which is rotatably mounted.

A storage loading mechanism is a mechanism that serves to mechanically charge an energy storage. The storage loading mechanism may, for example, serve for tensioning a spring, for example stretching or compressing a spring. By using a particular two-armed storage loading lever can rotate the storage loading lever be generated, whereby a charge of an energy storage is enabled. By using two arms on the storage loading lever can furthermore be provided that charging the energy storage device can be caused in different switching positions of the jump drive.

Furthermore, it can be advantageously provided that axes of rotation of the pendulous moving part and the storage loading lever are aligned coaxially.

A coaxial alignment of pendulum moving part and storage loading lever makes it possible to carry out a loading or unloading of an energy storage in a mechanical space in a compact space. A coaxial alignment makes it possible to space the oscillating moving part as well as the storage loading lever (in particular axially) and in each case to make a rotational movement, wherein the rotational movement of the pendulum-capable moving part and the storage loading lever can overlap one another.

Another object of the invention is to provide a switching device with relatively movable switching contact pieces, wherein a relative movement of the movable switching contact pieces can be effected by a jump drive. A switching device has a jump drive with the features listed above.

A switching device, in particular an electrical switching device, serves to switch a phase conductor. For this purpose, the phase conductor is either interrupted or switched through. For switching the phase conductor can be used relative to each other movable switching contact pieces, which are subjected by means of the jump drive a relative movement. The use of a jump drive on a switching device ensures that a relative movement of the switching contact pieces for switching the switching device always takes place with a defined movement profile.

In this case, it can be provided, in particular, that approximately the same motion profiles of the relative movements occur both during a switch-on process and during a switch-off process. An electrical switching device can be used, for example, in the medium and high voltage range to switch through or interrupt a phase conductor. In this case, it may be at the switching device to different types. For example, the switching device may be a circuit breaker, a circuit breaker, a grounding switch, etc. In particular, fast-switching earthing switches can be actuated during a switch-on by means of a jump drive. When using a snap drive according to the invention, both a switch-on and a switch-off of the switching device, in particular a grounding switch, with a jump characteristic can be completed.

• Figur 1
  einen Sprungantrieb in einem ausgeschalteten Zustand, die
• Figuren 2, 3, 4
  Sequenzen einer Bewegung des Sprungantriebes während eines Einschaltvorganges, die
• Figur 5
  den Sprungantrieb in einem eingeschalteten Zustand, die
• Figuren 6, 7, 8, 9
  Sequenzen einer Bewegung eines Sprungantriebes bei einem Ausschaltvorgang und die
• Figur 10
  Den Sprungantrieb in einem ausgeschalteten Zustand.

In the following, an embodiment of the invention is shown schematically in a drawing and described in more detail below. It shows the

• FIG. 1
  a jump drive in an off state, the
• Figures 2 . 3 . 4
  Sequences of a movement of the jump drive during a switch-on, the
• FIG. 5
  the jump drive in an on state, the
• FIGS. 6 . 7 . 8th . 9
  Sequences of a movement of a jump drive at a shutdown and the
• FIG. 10
  The jump drive in an off state.

In the FIGS. 1 to 10 In each case, a jump drive 5 is shown, which serves to operate a switching device 1. The switching device 1 has a first switching contact piece 2 and a second switching contact piece 3. The two switching contact pieces 2, 3 are mutually linearly movable. Form complementary end faces of the switching contact pieces 2, 3 face each other. Via a kinematic chain 4, the first switching contact piece 2 is connected to a jump drive 5. By means of the jump drive 5, a relative movement between the two contact pieces 2, 3 can be triggered. In the present case, it is provided that only the first switching contact piece 2 is movable. It can also be provided that both the first and the second switching contact piece 2, 3 are arranged to be movable. Accordingly, in a modification of the kinematic chains, a movement can also be transmitted to both switching contact pieces 2, 3 for generating a relative movement. In the present case, the second switching contact piece 3 is provided with ground potential, so that via a contact with the first switching contact piece 2, the first switching contact piece 2 can carry ground potential. It can also be provided a reversal of the application of ground potential, so that, for example, the first switching contact piece 2 is permanently applied to earth potential and can be done by turning on the switching device 1, a loading of the second switching contact piece 2 with ground potential. This makes it possible, for example, to ground a phase conductor which is to be grounded via the switching device 1. Accordingly, the switching device 1 is referred to as a grounding switch in this case. In this case, by using the snap drive 5 of the earthing switch or the switching device 1 act as a faster grounding switch, since a sudden switching off or switching on both switching contact pieces 2, 3 takes place.

In the FIGS. 2 to 10 is in each case the switching state of the switching device 1 with the first switching contact piece 2 and imaged the second switching contact piece 3. In addition, the respective state of the jump drive 5 is shown. In the FIG. 1 the switching device 1 has an open position, ie the switching contact pieces 2, 3 are electrically insulated from one another. The FIG. 10 shows a similar switch-off position of the switching device 1. The FIGS. 1 and 10 form the jump drive 5 in the same state. Starting from the off position of the FIG. 1 FIGS. 2, 3 and 4 show the sequence of a switch-on movement on the switching device 1 and the corresponding sequences in the jump drive 5. Starting from the on position of the FIG. 5 about the FIGS. 6 . 7 . 8th . 9 and 10 a return of the switching device 1 is shown from its closed position to its off position, the respective sequences of the jump drive 5 are shown in the figures. The FIGS. 1 and 10 correspond to each other.

First, based on the FIG. 1 the structure of a jump drive 5 described in more detail. The jump drive 5 has a transmission. The transmission is provided with a transmission shaft 6. The transmission shaft 6 is part of the kinematic chain 4, which transmits a relative movement to the two switching contact pieces 2, 3. The transmission shaft 6 is mounted stationary. On the transmission shaft 6 sits a pendulous moving part 7. The pendulum moving part 7 is formed in the manner of a radially from the gear shaft 6 forrollenden lever. At the pendulum moving part 7 a backdrop 8 is arranged. The gate 8 is arranged in the form of a continuous recess in the pendulous moving part 7. The gate 8 has the shape of a circular segment, wherein the circular segment is aligned coaxially to the axis of rotation of the gear shaft 6.

A storage loading mechanism has a linear drive 9. The linear drive 9 is stationary for storage of the gear shaft 6 aligned. By means of the linear drive a linear movement can be generated. The linear drive engages on one Storage loading lever 10 on. The storage loading lever 10 is designed as a two-armed storage loading lever and has a first driver 11 and a second driver 12. By means of the linear drive 9, a movement on the rotatably mounted storage loading lever 10 can be coupled, so that a rotational movement of the storage loading lever 10 can take place. The axes of rotation of the storage loading lever 10 and the pendulous moving part 7 are aligned coaxially. The drivers 11, 12 protrude radially so far that they protrude at a Drehbwegung and passing through the gate 8 in the link 8.

The jump drive 5 also has an energy store 13. The energy storage device 13 is equipped with a storage spring 14. The storage spring 14 is a compression spring, which rests with its one end to a stationary bearing point 15. The stationary bearing point is positioned at a fixed angle to the linear drive 9 and to the bearing of the gear shaft 6. In this case, the stationary bearing point 15 is designed such that a pivoting movement of the energy storage 13 is made possible by the stationary bearing point 15. As a result, a change in length, which is accomplished in a compression of the energy storage device 13, be displaced by a pivoting movement about the stationary bearing point 15, so that a rotational movement of the energy storage device 13 around the stationary bearing point 15 is made possible. A pivoting movement about the stationary bearing point 15 may be superimposed by a linear displacement of the energy storage device 13. At the end facing away from the stationary bearing point 15 end of the energy storage 13 is equipped with a bolt 16, wherein the bolt 16 protrudes into the slot 8. Thus, a forced guidance of the bolt 15 within the gate 8 that is, with a rotational movement of the energy storage 13 to the stationary bearing point 15 around the pin 16 and thus the remote from the stationary bearing point 15 end of the energy storage 13 within the backdrop 8 freely movable , Thereby, forcibly changing the distance from the stationary bearing point 15 to the bolt 16 enforced, whereby a voltage or relaxation of the accumulator spring 14 of the energy storage device 13 can be enforced.

To secure the pendulous moving part 7 in the respective end positions of a pendulum movement a securing device 17 is provided. The securing device 17 has a compression spring, which is stationarily positioned with its one end and is struck with its other end on the pendulum moving part 7. In this case, the stop point on the pendulum moving part 7 is selected such that the securing device 17 presses the pendulum moving part 7 in each case an end position, between the end positions, which form a stable position with the securing device 17, an unstable position exists, within which the securing device 17th acts as a dead center spring (see switching between the FIGS. 4 and 3 , Change the position of the securing device 17).

In the FIG. 1 an off position of the switching device 1 is shown. The following is based on the FIGS. 1 . 2 . 3 and 4 a change of the switching state of the switching device from OFF to ON using the jump drive 5 will be described.

During a switch-on operation, an actuation of the linear drive 9 initially takes place, as a result of which a rotary movement in the clockwise direction is transferred to the storage loading lever 10. The storage loading lever 10 rotates about its axis of rotation, wherein the first driver 11 dips radially projecting around the shading region of the pendulum moving part 7 and thereby moves into the slot 8. There, the first driver 11 abuts on the bolt 16 of the energy accumulator 13 and drives the bolt 16 in the clockwise direction through the gate 8.

In the FIG. 2 is shown a advanced position of the first carrier 11 of the storage loading lever 10, wherein under compression of the storage spring 14 of the energy storage 13th a shortening of the distance from the stationary bearing point 15 to the bolt 16 takes place. Secured by the securing device 17, the pendulum moving part 7 remains at rest. The switching device 1 and the switching contact pieces 2, 3 of the switching device 1 remain at rest. Furthermore, the first driver 11 drives the bolt 16 through the gate 8, whereby an increasing charge of the energy storage (compression of the accumulator spring 14) takes place. The securing device 17 acts against the frictional forces acting between the energy store 13 (in particular pin 16) and the pendulum-capable moving part 7 (in particular gate 8), so that the pendulum-capable moving part 7 remains at rest.

The energy storage 13, in particular the storage spring 14 is according to the FIG. 3 in dead center. In the dead center, the direction of action of the energy storage device 13 passes through the axis of rotation of the pendulum moving part 7. By passing this dead center, driven by the first driver 11, the energy storage 13 / the bolt 16 leaves the dead center and beats against an end stop 18 of the gate 8, whereupon the storage spring 14 urges to relax. The now developing force development of the energy storage device 13 is greater than the force effect of the securing device 17, so that the force effect of the securing device 17 is overcome by the energy storage device 13. The securing device 17 or its pressure spring first passes through a dead center, wherein the force effect of the securing device 17 is directed against the force effect of the energy accumulator 13 until reaching the dead center. With a passing through the dead center of the securing device 17, the sense of direction of the force of the fuse device 17 and supports the driving force of the energy storage 13 and drives together with the energy storage 13 due to the abutment of the bolt 16 at the end stop 18, the pendulum moving part 7, whereby a rotational movement of the transmission shaft 6 is enforced. The first and the second switching contact piece 2, 3 are subjected to a relative movement. The two switching contact pieces 2, 3 touch each other. This location is in the FIG. 4 shown. In order to enable a position assurance via the securing device 17, the second driver 12 is moved completely out of the slot 8 upon reaching the switch-on position of the first and second switching contact piece 2, 3 ( FIG. 5 ). Now, the pendulum moving part 7 by the securing device 17 in a second end position of the pendulum moving part 7 (if necessary, supported by the biased energy storage 13) is held.

Starting from the FIG. 5 about the FIGS. 6 . 7 . 8th . 9 and 10 a turn-off movement is shown. In this case, the movement which is to be transmitted to the transmission shaft 6, to. The linear drive 9 drives the storage loading lever 10 counterclockwise, whereby the second driver 12 is moved into the slot 8. There comes the second driver 12 with the bolt 16 of the energy storage 13 in contact (see FIG. 5 to FIG. 6 ), whereby the bolt 16 is driven into the gate 8. The pendulum moving part 7 is held spring-loaded by the securing device 17. Furthermore, with advancing rotational movement of the storage loading lever 10 counterclockwise the bolt 16 is driven through the gate 8 until the time in which the energy storage 13 with the storage spring 14 in the charged state, a dead center ( FIG. 7 ) occupies. That is, the force of the energy storage 13 / the memory spring 14 passes through the pivot point of the transmission shaft 6. With a drive of the bolt 16 through the dead center of the energy storage device 13 through (effected by the second driver 12) it comes to discharging the now charged energy storage 13th The energy storage device 13 with its bolt 16 strikes against a second end stop 19 of the link 8, wherein initially the force effect of the securing device 17 is to be overcome by the energy store 13. The pendulum moving part 7 is permanently loaded by the force securing device 17 and is made driven out of a stable end position (this state is in the FIG. 7 shown). In the FIG. 8 is the dead center of the energy storage 13 just left. The bolt 16 has been released from the second driver 12 and strikes against the second end stop 19 and is about to move the pendulum moving part 7 counterclockwise opposite and about to trigger a movement of the transmission shaft 6. The FIG. 9 shows the jump-like displacement of the pendulum moving part 7 and a corresponding abrupt turn-off of relatively movable switching contact pieces 2, 3. In the further course of the linear actuator 9 pushes the first driver 11 out of the backdrop 8, so that a backup of the end position of the pendulum moving part 7 below Use of the force effect of the securing device 17 is present.

Claims (16)

Jump drive (5) for a switching device (1) comprising an energy store (13), a pendulum movable part (7) of a transmission and a securing device (17) for the moving part (7),
characterized in that a direction reversal of the moving part (7) takes place against a force effect of the securing device (17). Jump drive (5) according to claim 1,
characterized in that the moving part (7) and the securing device (17) form a bistable system. Jump drive (5) according to claim 1 or 2,
characterized in that the moving part (7) assumes a labile state when the energy store (13) is charged. Jump drive (5) according to one of claims 1 to 3,
characterized in that the moving part (7) acts as deadtime member in the transmission. Jump drive (5) according to one of claims 1 to 4,
characterized in that the securing device (17) has a dead center spring. Jump drive (5) according to one of claims 1 to 5,
characterized in that the energy store (13) has a dead center spring (14). Jump drive (5) according to one of claims 5 or 6,
characterized in that the dead points of Totpunktfedern (14, 17) of the securing device (17) and the energy storage (13) coupling opposing force effects on the moving part (7). Jump drive (5) according to one of claims 5 to 7,
characterized in that passing through a dead center of a dead center spring (14), in particular of the energy store (13) leads to a change of a stable state of the bistable system. Jump drive (5) according to one of claims 5 to 8,
characterized in that the dead centers of Totpunktfedern (14, 17) are passed through in succession in time. Jump drive (5) according to one of claims 5 to 9,
characterized in that the pendulum-capable moving part (7) is driven by discharging energy from the energy store (13) of the jump drive (5). Jump drive (5) according to one of claims 1 to 10,
characterized in that the transmission has a link (8) via which charging and / or discharging of the energy store (13) is controlled. Jump drive (5) according to one of claims 1 to 11,
characterized in that the link (8) has at least one end stop (18, 19) for limiting a movement that can be issued by the transmission. Jump drive (5) according to one of claims 1 to 12,
characterized in that the pendulous moving part (7) is rotatably mounted. Jump drive (5) according to one of claims 1 to 13,
characterized in that a storage loading mechanism has a particular two-armed storage loading lever (10) which rotatably mounted is. Jump drive (5) according to one of claims 13 or 14,
characterized in that axes of rotation of the pendulum moving part (7) and the storage loading lever (10) are aligned coaxially. Switching device (1) with relatively movable switching contact pieces (2, 3) whose relative movement can be effected by a jump drive (5),
characterized in that the switching device (1) has a jump drive (5) according to one of the claims 1 to 15.

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