Background of the invention

The present invention relates to the general field of electrical switching devices and more particularly to systems for operating the cut in this type of devices.

This type of plant comprises one or more poles of a power failure such as switch-disconnectors triggerable, triggerable inter fuse, triggerable switches and circuit breakers. The main functions of these centers are:

- establishment and interruption of electric power load, overload and short circuits,

- protection of the site and people against electrical hazards,

- guarantee the safety of the user (actuation, recording and isolation).

The electrical switching devices are equipped with a control system connected to the electrical switching poles from which the cutoff of the electric current is controlled. The control system is the most important safety feature of the system because it is he who provides the level of performance and reliability of electrical switchgear and the interface between a user and the electrical part of power or the devices supplied with electric current.

The control system allows the user to toggle on or clusters cut from an open position (a blackout) to a closed position (setting of the electric current) and vice versa by means of a manual control handle or with an electric control.

Regardless of normal operation (ie opening and closing of the user by switching devices), the control system must ensure a failover or the position of interruption poles closed to the open position without requiring direct intervention of a user, regardless of the system operating conditions such as when a restraining force is applied simultaneously on the control handle. This automatic switchover from the closed position to the open position is mainly used to perform security functions such as emergency stop, the thermal overload, the differential fault, short circuit, etc.

Currently available control systems are not adapted to perform reliably automatic switchover from the closed position to the open position in particular because they do not provide sufficient mechanical energy to allow the actuation of power switching devices electrical or they do not meet some important security criteria as independent failover conditions or a high speed in the changeover operation.

Purpose and Summary of the Invention

The present invention aims to propose a new control system design that ensures a priority and a reliable electrical switching pole shift between the closed position and the open position.

This object is achieved by a triggering control system for one or more poles of a power failure, the system comprising:

- an accumulation mechanism comprising a movable control handle between a cutoff position and a closed position,

- a first pivoting connecting rod about a first pivot point between a first position and a second position and vice versa, by operating the control handle of the accumulation mechanism between the cutoff position and the closed position, and vice versa,

- a second connecting rod pivotally about an axis of rotation for connection to one or more breaking poles, the second link being connected to the first link by a sliding connection so that movement of the first link between the first position and

second position, respectively between the second position and the first position causes pivoting of the second link around the rotation axis between an open position or interruption poles and a closed position or breaking poles respectively between a closed position or interruption poles and an open position or breaking poles,

- a trigger mechanism adapted to release the first point of rotation of the first link and to exert a displacement force on the first connecting rod in the vicinity of said first pivot point so as to move the first link between the second position and a third position when said first link pivots about a second fulcrum, the movement of the first link between the second position and the third position causing pivoting of the second link about the axis of rotation between the closed position of the or breaking poles and the open position of the or breaking poles.

Using two motion reverse links and moving the point of rotation of the first link based on the movement to be performed, the triggering of the changeover priority to the open position can be achieved with a large lever arm that amplifies the force transmitted by triggering control system for breaking poles, without loss of energy because the tilting of the first link is performed without having to overcome the resistance of the accumulation mechanism.

In addition, the priority switching in the open position is "trip free" (or "trip free"), that is to say, it can be controlled independently of any external mechanical influence and in particular even if a force restraint is applied to the system control handle. It is therefore not necessary to provide a release of the manual control of the system to trigger the primary switch to the open position.

According to a first aspect of the trigger control system of the invention, the accumulation mechanism is capable of releasing the second point of rotation of the first rod when the first point of rotation of said first link is released by the second release mechanism so as to drive the

pivot the first link about a third pivot point corresponding to the sliding connection connecting the second link to said first link when the second rod reaches its open position, the pivoting of the first link about the third pivot point causing the movement of the control handle in an intermediate position between the cut position and the closed position of said handle.

It is thus possible to place the trigger control system in a position called "triggered" and "unhooked" allowing a user to see, for visual inspection of the position of the handle, the priority opening of the poles cut has been triggered.

According to one embodiment, the accumulation mechanism trigger control system comprises an internal carriage connected to the control handle and an outer slide connected to the first link, the system further comprising a suitable biasing spring to move the carriages inner and outer over a short distance when the accumulation mechanism releases the second point of rotation of the first link so as to cause the pivoting of the first link about the third pivot point and moving the control handle in an intermediate position between the cutoff position and the closed position of said handle, allowing to note the tripped position of the system by simple visual inspection of the position of the control handle.

According to a second aspect of the trigger control system of the invention, the first accumulation mechanism comprises a first spring adapted to engage, after compression, a force on the first connecting rod during its pivoting about the first pivot point between the first position and the second position of said first link and vice versa and in that the trigger mechanism comprises a second spring suitable for exerting, after compression, a force on the first connecting rod during its movement between the second position and the third position when said first connecting rod pivots about the second pivot point.

Using a dedicated spring for each of the two mechanisms, a high speed is ensured in switching between the position

opened and closed, and vice versa, which is important to ensure the safety in the power outage.

The first spring and the second spring it possible to obtain similar torque curves, which allows to have similar release rates in the two mechanisms, thereby ensuring the safety of the cut in all situations.

According to a third aspect of the trigger control system of the invention, the latter comprises a manual control means for releasing the first point of rotation of the first link.

According to a fourth aspect of the trigger control system of the invention, it comprises an electromechanical control means for releasing the first point of rotation of the first link.

Whether manual or electromechanical control means requires very little energy to control the tilting in the open position.

According to a fifth aspect of the trigger control system of the invention, the accumulation mechanism includes an internal slide connected to the control handle and an outer slide connected to the first connecting rod, the sliding inner carriage in the external carriage when moving of the control handle between the OFF position and the closed position, the first spring being interposed between the internal carriage and the external carriage and in that the triggering control system comprises a locking member adapted to lock the inner carriage with the external carriage after displacement of the first link between the second position and the third position so as to permit resetting of the second spring of the trigger mechanism by avoiding compressing the first spring.

It is thus possible to promptly coupling the inner and outer carts to allow resetting of the system. Only the second spring of the second release mechanism is reset. The rearmament effort to apply is decreased through the control system structure to trigger the invention.

The present invention also relates to a power cut-e apparatus comprising one or more electrical switching poles equipped with a movable contactor, characterized in that said apparatus further comprises a trigger control system according to the invention, a switching shaft connecting each of the movable contactor or breaking poles to the axis of rotation of the second link.

Brief Description of Drawings

Other features and advantages of the invention will become apparent from the following description of specific embodiments of the invention, given as non-limiting examples, with reference to the accompanying drawings, wherein:

- Figure 1A is a schematic view showing a trigger control system in a cutoff position in accordance with one embodiment of the invention,

- Figure 1B shows a movable contactor in the cutoff position of the system of Figure 1A,

- Figure 2A is a schematic view showing a trigger control system in a closed position according to one embodiment of the invention,

- Figure 2B shows a movable contactor in the closed position of the system of Figure 2A,

- Figure 3A is a schematic view showing a trigger control system in a cutoff position triggered and unhooked in accordance with one embodiment of the invention,

- Figure 3B shows a movable contactor in the cutoff position triggered system of Figure 3A,

- Figure 4 is a schematic exploded perspective view of the trigger control system of Figs 1A to 3A,

- Figure 5 is a schematic exploded perspective view of the accumulation mechanism shown in Figure 4,

- Figures 6 and 7 are perspective views of the accumulation mechanism once mounted,

- Figure 8 is a simplified schematic view showing the position of first and second links when the trigger control system is in a cutoff position,

- Figure 9 is a simplified schematic view showing the position of first and second links when the trigger control system is actuated to a closed position,

- Figure 10 is a sectional view of the accumulation mechanism when the trigger control system is in a cutoff position,

- Figure 11 is a sectional view of the accumulation mechanism when the trigger control system control handle is actuated to a closed position, with the spring compressed accumulation mechanism,

- Figure 12 is a sectional view of the accumulation mechanism when the trigger control system is in a closed position,

- Figure 13 is a sectional view of the accumulation mechanism when the control handle of the trigger control system is actuated to an open position, with the spring compressed accumulation mechanism,

- Figure 14A is a schematic exploded perspective view of the trigger mechanism shown in Figure 4,

- Figure 14B is a perspective view of the trigger mechanism once mounted,

- Figure 15 is a schematic side view showing a part of the components of the trigger control system of Figs 1A to 3A when the latter is in a closed position,

- Figure 16 is a schematic side view showing a part of the components of the trigger control system of Figs 1A to 3A when the latter is at the beginning of safety switching trigger,

- Figure 17 is a schematic side view showing a part of the components of the trigger control system of Figs 1A to 3A when the latter is in a cutoff position triggered,

- Figures 18 to 20 are simplified schematic views showing the position of first and second links of the trigger control system when it is respectively in a closed position, triggered and initiated and unhooked cut cut,

- Figure 21 is a simplified schematic view showing the position of first and second rods when the trigger control system is in a cutoff position triggered,

- Figure 22 is a schematic view showing a trigger control system in a cutoff position in accordance with another embodiment of the invention.

Description of an embodiment

1A shows a switching device 1 in accordance with one embodiment of the invention. In the embodiment described here, the apparatus 1 includes a trigger control system 100 according to one embodiment and several interruption poles 10. The interruption poles 10 correspond to switching devices such as switches, commutators or fuse switch disconnectors. As illustrated in Figures 1A and 1B, each pole unit 10 is connected to the trigger control system 100 by a switching shaft 101 which is secured on the one hand, of a connecting rod of the system 100 described below in details and, secondly, each movable contactor of interruption poles corresponding here to a set of movable contacts 11, the shaft 101 constituting the axis of rotation of the moving contacts 11. The rotation of the shaft 101 which is controlled by the system 100 to move the movable contacts 11 of each pole unit between an open position (Figure 1A) in which the movable contacts 11 are spaced apart from the fixed contacts 13 of the switching device (Figure 1B) and a closed position (Figure 2A) in which the movable contacts 11 are in contact with the fixed contacts 13 of the switching poles (Figure 2B), and vice versa. In the embodiment described herein, the control of the opening and closing of the breaking pin 10, and vice versa, is performed by means of a control handle 102 movable between a first position shown in Figure 1A which corresponds to position

shown in Figure 2A, which corresponds to the closed position of the interruption poles 10.

Figure 4 shows the various elements of the trigger control system 100 in accordance with one embodiment of the invention. The system 100 comprises:

- a accumulating mechanism 200,

- a trigger mechanism 300,

- a trigger control module 400,

- an auxiliary contact module 500,

- a first pivoting connecting rod 600,

- a second pivotal link 700.

These elements are assembled with each other and maintained by means of two sheet metal cheeks 110 and 120.

As illustrated in Figure 5, the accumulation mechanism 200 comprises:

- an internal slide 210,

- an external carriage 220,

- an energy storage spring 230,

- a spring guide 240,

- carts guides 250,

- a bevel gear 260,

- a first ratchet latch 270,

- a second ratchet latch 280.

Internal 210 and external carriages 220 are slidably mounted relative to the other, the carriages guides 250 guiding the relative sliding between the two carriages. When mounting the inner carriage 210 in the external carriage 220, the energy storage spring 230 is interposed between the two carriages. Specifically, the spring 230 is held on the guide spring 240 which is itself fixed to two fixing lugs 221 and 222 respectively present at both ends of the outer slide 220. At rest, the spring 230 extends between the two legs 221 and 222 as illustrated in Figure 10. the inner carriage 210 includes two pairs of support legs 211 and 212 each disposed respectively on each side of the tabs 221 and 222 (figures 5, 6 and 7). As explained below, the legs of

As shown in Figure 4, the first pivot link 600 includes an arm 610 pivotable about a first pivot point PI formed by a pin 611 which is retained by the second release mechanism 300. The arm 610 further comprises at its upper end a pin 612 set on said upper end and intended to be engaged in a slot 201 formed in the external carriage 220. the shaft 612 constitutes a second pivot point P2 about which the link arm 600 is pivotable when the pin 611 is released by the second release mechanism as explained in detail below. In the embodiment described here, the rod 600 includes a second arm 620 connected to the first arm 610 by a beam 630. Symmetrically, the second arm is pivotable on the one hand, PI around the pivot point when the pin 611 is retained by the second release mechanism 300 and, on the other hand, about the second pivot point P2 when the pin 611 is released by the second release mechanism, the arm 620 having an axis 622 set on its upper end and intended to be engaged with lumen 202 formed in the external carriage. The second pivotal link 700 includes a body 701 having a lumen 720 for receiving one end of the shaft 101 for controlling the opening and closing of the interruption poles 10. In order to ensure the rotation of the shaft 101, the light 720 includes slots 721 for cooperation with teeth 1010 present on the outer surface of the shaft 101 (figures 1B and 2B).

connecting rod 600 and slide therein during movement of the connecting rod 600 so as to produce a sliding joint and articulated between the connecting rods 600 and 700.

Figure 8 shows the connecting rods 600 and 700 and the external carriage 220 in a position corresponding to the switching devices of the open position as shown in Figures 1A and 1B. In Figure 9, the external carriage 220 is moved in the direction A, resulting in the pivoting of the first link 600 about the first fulcrum which PI itself, resulting in the pivoting of the second link 700 around the center 722 of the light 720 by sliding the pin 710 in the oblong groove 613, the center 722 corresponding to the axis of rotation of the second link 700. the pivoting of the rod 700 causes rotation of the shaft 101 (not shown in Figure 9) to an angle sufficient to allow the closure of interruption poles as shown in figures 2A and 2B.

will now be explained how is controlled triggering the movement of the outer slide between the open position and breaking poles of the closed position and vice versa.

Figures 10, 11 and 12 show the relative movements of the carriages internal 210 and external 220 to move from the open position to the closed position by triggering cleavage of poles of the movement of the outer carriage. Figure 10 shows the relative position between the inner and outer carriages 210 220 corresponding to the position of the first link 600 and second link 700 shown in Figure 8 (breaking poles opening position). Figure 12 shows the relative position between the inner and outer carriages 210 220 corresponding to the position of the first link 600 and second link 700 shown in Figure 9 (breaking poles closing position).

The first ratchet latch 270 allows to block momentarily the movement of the outer slide 220 in the direction A indicated in Figure 11 so as to allow, in a first step, the compression of the spring accumulator 230 (Figure 11) and, in a second stage, triggering the movement of the outer slide 220 in the direction a under the effect of the action of spring 230 (Figure 12). More specifically, as illustrated in FIG 10, when the first pawl 270 is in the low position, it bears against ledges 223 formed in the upper portion of the outer slide 220, thereby retaining the external carriage.

Similarly, Figures 12, 13 and 10 show the relative movements of the inner and outer carriages to move from the closed position to the open position by triggering cleavage of poles of the movement of the outer carriage, Figure 10 showing the relative position between the carriages 210 and 220 corresponding to the position of the connecting rods 600 and 700 shown in Figure 8 (breaking poles opening position), Figure 12 showing the relative position between the carriages 210 and 220 corresponding to the position of the connecting rods 600 and 700 shown in Figure 9 (breaking poles closing position).

The second pawl latch 280 is for temporarily blocking the movement of the outer slide 220 in the direction B shown in Figure 13 so as to allow, in a first step, the compression of the spring accumulator 230 (Figure 13) and, in a second stage, triggering the movement of the outer slide 220 in the direction B under the effect of the action of spring 230 (Figure 10). More specifically, as illustrated in Figure 12, when the second pawl 280 is in the low position, it bears against ledges 224 formed in the upper portion of the outer slide 220, thereby retaining the external carriage.

As shown in Figures 14A and 14B, the release mechanism 300 comprises a hook 310 adapted to pivot about an

axis 311 which is maintained in a fixed position in the trigger control system 100. In the embodiment described herein the hook 310 includes first and second arms 312 and 313 symmetrical interconnected and respectively comprising at one of their ends a hole 3122, 3132 through which the axis 311. the release mechanism 300 also includes a guide 320 on which is mounted a spring 330, the spring 330 being in abutment on the one hand, against a first end 321 of the guide 320 via a washer 323 engaged with the guide 320 and, on the other hand, against a slider 340. the guide 320 is pivotally mounted relative to the hook 310, the guide 320 for this purpose comprising an orifice 325 through which the axis 311.The slider 340 includes a through hole 341 in which is engaged the axis 611 of the rod 600, the axis 611 being further housed in an oblong slot 324 formed in the guide 320 so as not to hinder the movement of the slide 340 the along the guide 320. the tripping mechanism 300 further comprises a lever 350 which is pivotally attached at 310 by means of a pin 351 which is inserted in both the 3121 and 3131 orifices formed respectively in the arms 312 and 313 the hook 310 and in a passage 352 formed in the lever 350. the pin 351 comprises in its central portion 3150 a trigger coupling which, when locked keeps the hook 310 in the potion shown in Figure 15.axis 611 being further housed in an oblong slot 324 formed in the guide 320 so as not to hinder the movement of the slide 340 along the guide 320. The tripping mechanism 300 further comprises a lever 350 which is pivotally attached at 310 by means of a pin 351 which is inserted in both the 3121 and 3131 orifices formed respectively in the arms 312 and 313 of the hook 310 and in a passage 352 formed in the lever 350. the pin 351 comprises in its central part 3150 a trigger coupling which, when locked keeps the hook 310 in the potion shown in Figure 15.axis 611 being further housed in an oblong slot 324 formed in the guide 320 so as not to hinder the movement of the slide 340 along the guide 320. The tripping mechanism 300 further comprises a lever 350 which is pivotally attached at 310 by means of a pin 351 which is inserted in both the 3121 and 3131 orifices formed respectively in the arms 312 and 313 of the hook 310 and in a passage 352 formed in the lever 350. the pin 351 comprises in its central part 3150 a trigger coupling which, when locked keeps the hook 310 in the potion shown in Figure 15.The tripping mechanism 300 further comprises a lever 350 which is pivotally attached at 310 by means of a pin 351 which is inserted in both the 3121 and 3131 orifices formed respectively in the arms 312 and 313 of the hook 310 and a passage 352 formed in the lever 350. the pin 351 comprises in its central portion 3150 a trigger coupling which, when locked keeps the hook 310 in the potion shown in Figure 15.The tripping mechanism 300 further comprises a lever 350 which is pivotally attached at 310 by means of a pin 351 which is inserted in both the 3121 and 3131 orifices formed respectively in the arms 312 and 313 of the hook 310 and a passage 352 formed in the lever 350. the pin 351 comprises in its central portion 3150 a trigger coupling which, when locked keeps the hook 310 in the potion shown in Figure 15.it is locked keeps the hook 310 in the potion shown in Figure 15.it is locked keeps the hook 310 in the potion shown in Figure 15.

As explained below, the trigger mechanism is for holding the connecting rod 600 in a first position (Figure 15) in which the pin 611 is retained by flanges 3120 and 3130 respectively present on the arms 312 and 313 of the hook 310 . in this first position, the connecting rod 600 is pivotable about the point of its first PI rotation point while the spring 330 is held in compression. The axis 611 of the rod 600 is released from flanges 3120 and 3130 when the trigger control module 400 has an Fp pressing force on the lever 350 to unlock the latching trigger 3150, which allows to lower the hook 310 relative to the axis 611 and to allow its disengagement of flanges 3120 and 3130.

The spring 330 applies a force on the flanges 3120 and 3130.

This force induces a counterclockwise torque on the hook 310.

The 3510 release product hooking on the hook 310 a reaction torque opposite to that generated by the action of the spring 330 of the flanges 3120 and 3130. Thus, the hook 310 is maintained in equilibrium in its position of Figure 15 as the 3510 snap is effective, that is to say locked. The clash is said 3510 "stable" to minimize Fp effort. As soon as the coupling 3510 is unlocked, the reaction torque produced by the latter disappears and causes rotation of the hook 310.

Through the architecture of the trigger mechanism comprising significant lever arm and two collisions in cascade, allowing a high reduction ratio of effort, the pressing force Fp is very small compared to the force of the spring 330. This feature allows to reduce the mechanical power required from the activation module 400. in this second position, the connecting rod 600 is pivotable around the rotation point P2 under the effect of the thrust exerted by the spring 330. the module trigger control 400 is here formed of a coil actuator (not shown) that allows to exert a bearing force on the lever. However, any other type of actuator, electromechanical or manual, can be used to exert a bearing force on the lever 350.

We will now describe the operation of automatically trigger the opening of the breaking poles connected to the trigger control system of the invention, regardless of the system control by the control handle as described above. In other words, the switching poles of the opening of tripping operation described herein corresponds to a security function (for example in case of emergency shutdown, thermal overload, earth fault, short circuit, etc. .) that can be implemented without requiring the direct intervention of an operator.

For a clearer understanding, the kinematics of the release of the trigger control system of the invention to force the opening of the breaking poles operation is particularly described in relation to Figures 18 and 19 schematically show the relative movements between the first link 600, the second link 700 and the tripping mechanism 300.

The triggering operation is implemented when the trigger control system is in the position illustrated in Figure 18 which corresponds to:

- the interruption poles of the closed position as illustrated in Figure 2B,

- the position of the connecting rods 600 and 700 as illustrated in Figure

9,

- the position between the inner carriage 210 and the external carriage 220 as illustrated in Figure 12, and

- the position of the release mechanism 300 as illustrated in Figure 15.

As described above and as illustrated in Figure 15, the trigger to force the opening of the breaking pin is controlled by the trigger control module 400 (not shown in Figure 15) which exerts a pressing force Fp on the lever 350 which is integral with the hook 310. the force Fp support will allow to lower the arms 312 and 313 of the hook 310 of the second release mechanism 300 so that the flanges 3120 and 3130 will fall below the axis 611. once the pin 611 released from the hook 310, the spring 330 will push on said axis via the slider 340, which causes the pivoting of the connecting rod 600 about the second pivot point P2 as shown in Figure 16. following the pivoting of the connecting rod 600,the guide 320 will also rotate upwardly about the axis 311.

At the end of the trip operation, that is to say, when the trigger control system 100 is in the position called "triggered", the connecting rod 600 is in the position as shown in Figures 17 19 and 21. the pivoting of the connecting rod 600 about the second pivot point P2 can rotate the rod 700 about the center 722 of the light 720 by sliding the pin 710 in the oblong groove 613, the rod 700 thereby causing the rotation of the shaft 101 integral with the blade 11 in every way placing each cut-pole breaking pole connected to the trigger control system in the open position as illustrated in Figure 1B.

In this way, the outbreak control system of the invention may at any time trigger the opening of breaking poles, and reliably because the full outbreak, that is to say sufficient pivoting of the connecting rod 700 to allow opening of or interruption poles connected, is ensured in all conditions of use of the trigger control system such as when a restraining force is applied to the control handle.

The use of movement inversion rods in the trigger control system of the invention allows in particular to avoid:

- having to fight against the efforts of the springs or the manual opening / closing mechanism (here the spring 230) when automatic tripping of the opening or interruption poles,

- having to disengage the manual control by the control handle, and

- having to disengage the rear of the springs or manual mechanism.

The use of a dedicated spring for manual opening / closing of the interruption poles and another dedicated spring for the automatic triggering of the opening of the interruption poles ensures speed and an actuating force high on the bodies of switching devices either for manual opening / closing or for automatically triggering the opening of the breaking poles.

In a particular aspect of the trigger control system, the spring 230 of the accumulation mechanism and the spring 330 of the tripping mechanism are sized so as to generate the same torque curve and, therefore, similar speeds for opening / manual closing and for the automatic triggering of the opening of the breaking poles.

Optionally but advantageously, the trigger control system of the invention may be provided with means for placing the control handle in a particular position when the trigger control system 100 is in the tripped position. To this end, as illustrated in Figures 14A and 14B, a pusher 360 is mounted on an arm 326 of the guide 320. More specifically, the tappet 360 comprises two legs 361 and 362 interconnected. The pusher 360 is supported on the arm 326 of the guide 320 via a connecting part 363 which allows to actuate the lugs 361 and 362 towards the pawl 280 (Figure 15). As illustrated in Figure 16, at the beginning of automatic trip operation of the opening of the interruption poles,

Under the effect of spring 510 which is held in compression when the system of the invention is placed in the manual closing position or breaking poles as illustrated in Figure 12, the internal carriages 210 and outer 220 will move a short distance (a few millimeters, for example) to the open position or the breaking poles resulting, as shown in figures 3A and 17, a displacement of the control handle 102 in an intermediate position, termed position "unhooked" between its open position (Figure 1B) and its closed position (Figure 2B). The tripped position of the trigger control system of the invention can thus be detected by simple observation of the unhooked position of the control handle.

As illustrated in Figures 14A and 14B, the trigger control system of the invention further comprises a latch 370 secured to the arm 326 of the guide 320. In the automatic triggering of the opening or interruption poles, the pivoting of the guide 320 causes the tilting of the rear portion 371 of the latch 370 upwardly as illustrated in figures 16 and 17. at the end of automatic tripping operation of opening or breaking poles, part rear 371 locks the internal carriages 210 and outer 220 therebetween. It is possible to reset the system after automatic release operation.

As illustrated in Figure 20, by turning the control handle in a counterclockwise direction from its released position (Figure 17), that is to say towards its open position (Figure 1A), the movement of the outer carriage ( not shown in Figure 20) causes pivoting of the first link 600 about a third point

P3 corresponding to the rotation pin 710 of the second link 700 which is engaged in the oblong groove 613 formed in the arm 610 of the first link 600. This action on the handle command is used to bring the manual opening / closing mechanism or of interruption poles in its open position (figures 1A, 1B, 8 and 10). It also allows to reset the spring 330, second releasing mechanism 300 (Figure 23).

The trigger control system described above may further be positioned so interposed between control poles. 22 illustrates a switching device 40 comprising a trigger control system 50 identical to the system 100 described above. Of interruption poles 60 are placed on one side of system 50 while breaking poles 70 are placed on the other side of the system 100. In this embodiment, the symmetrical architecture of the link 600 described above, c that is to say a connecting rod having two arms connected to each other, is advantageously used. Indeed,

Given the figures 18 to 20, the skilled person will easily consider other possible embodiments of the invention trigger system to automatically trigger the cut on the principle of the invention.

CLAIMS

1. trigger control system (100) for one or more poles of a power cut (10), the system comprising:

- an accumulation mechanism (200) comprising a control handle (102) movable between a disconnected position and a closed position,

- a first link (600) pivotably around a first rotation point (PI) between a first position and a second position and vice versa, by operating the control handle (102) of the accumulation mechanism (200) between the cutoff position and the closed position, and vice versa,

- a second rod (700) pivoting about an axis of rotation (722) intended to be connected to one or more breaking poles (10), the second link (700) being connected to the first link (600) by a sliding connection (710, 613) so that movement of the first link (600) between the first position and the second position, respectively between the second position and the first position causes pivoting of the second link (700) around the axis of rotation (722) between an open position or breaking poles (10) and a closed position or breaking poles (10), respectively between a closed position or breaking poles (10) and an open position or the breaking poles (10),

- a tripping mechanism (300) adapted to release the first rotation point (PI) of the first link (600) and to exert a displacement force on the first connecting rod (600) adjacent said first pivot point (PI) so as to move the first link between the second position and a third position when said first link pivots about a second pivot point (P2), the movement of the first link (600) between the second position and the third position causing a pivoting of the second link (700) about the axis of rotation (722) between the closed position or interruption poles and the opening or position of the switching devices (10).

2. System according to claim 1, characterized in that the accumulation mechanism (200) is capable of releasing the second pivot point (P2) of the first link (600) when the first rotation point (PI) of said first rod is released by the release mechanism (300) so as to cause the pivoting of the first link (600) about a third pivot point (P3) corresponding to the sliding connection (710, 613) connecting the second link ( 700) to said first link (600), the pivoting of the first link (600) about the third pivot point (P3) causing the displacement of the control handle (102) in an intermediate position between the cut position and the closed position of said handle.

3. System according to claim 2, characterized in that the accumulation mechanism (200) comprises an internal carriage (210) connected to the control handle (102) and an external carriage (220) connected to the first link (600) and in that it comprises a biasing spring (510) adapted to move the inner carriages (210) and outer (220) over a short distance when the accumulation mechanism (200) releases the second pivot point (P2) of the first link (600) so as to cause the pivoting of the first link (600) about the third pivot point (P3) and the displacement of the control handle (102) in an intermediate position between the cut position and the closed position of said handle.

4. System according to any one of claims 1 to 3, characterized in that the first storage mechanism (200) comprises a first spring (230) for exerting, after compression, a force to the first link (600) when its pivoting about the first pivot point (PI) between the first position and the second position of said first link (600) and vice versa and in that the second release mechanism (300) comprises a second spring (330) adapted to exert after compression, a force to the first link (600) during its movement between the second position and the third position when said first link pivots about the second pivot point (P2).

5. System according to claim 4, characterized in that the first spring (230) and the second spring (330) are dimensioned so as to generate similar torque curves.

6. A system according to any one of claims 1 to 5, characterized in that it comprises manual control means for releasing the first pivot point (PI) of the first link (600).

7. A system according to any one of claims 1 to 5, characterized in that it comprises an electromechanical control means (400) for releasing the first pivot point (PI) of the first link (600).

8. System according to claim 4 or 5, characterized in that the accumulation mechanism (200) comprises an internal carriage (210) connected to the control handle (102) and an external carriage (220) connected to the first link ( 600), the inner carriage (210) sliding in the external carriage (220) upon movement of the control handle (102) between the cutoff position and the closed position,the first spring (230) being interposed between the inner carriage (210) and the external carriage (220) and in that the trigger control system includes a locking member (370) adapted to lock the inner carriage (210) with the external carriage (220) after the movement of the first link (600) between the second position and the third position so as to permit resetting of the second spring (330) of the trigger mechanism (300) without having to compress the spring 230 the first mechanism.

9. An electric cut-off (1) comprising one or more poles of a power cut (10) equipped with a movable contactor

(11), characterized in that said apparatus further comprises a trigger control system (100) according to any one of claims 1 to 7, a cut-off shaft (101) connecting each movable contactor (11) or breaking poles (10) to the axis of rotation (722) of the second link (700).