EP1383150B1 - Switch with a trip device - Google Patents
Switch with a trip device Download PDFInfo
- Publication number
- EP1383150B1 EP1383150B1 EP03354049A EP03354049A EP1383150B1 EP 1383150 B1 EP1383150 B1 EP 1383150B1 EP 03354049 A EP03354049 A EP 03354049A EP 03354049 A EP03354049 A EP 03354049A EP 1383150 B1 EP1383150 B1 EP 1383150B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- bearing member
- transmission system
- latch
- bistable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000007246 mechanism Effects 0.000 claims description 39
- 230000033001 locomotion Effects 0.000 claims description 11
- 238000004146 energy storage Methods 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 2
- 241000722921 Tulipa gesneriana Species 0.000 claims 1
- 238000009877 rendering Methods 0.000 claims 1
- 238000009825 accumulation Methods 0.000 description 34
- 238000000926 separation method Methods 0.000 description 12
- 230000007935 neutral effect Effects 0.000 description 11
- 230000005520 electrodynamics Effects 0.000 description 8
- 241001080024 Telles Species 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 241000287107 Passer Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
Definitions
- the invention relates to a switch for low voltage power, provided with a trigger mechanism.
- a bistable sub-assembly 200 composed of a lever 202 and a connecting rod 204 articulated by an axis 206, is urged by an accumulation spring 207 between a stable open position limited by an opening stop 208 and a stable closing position limited by a closing abutment 209, passing through an unstable neutral position in which the spring 207 is loaded to the maximum.
- the lever 202 drives a contact bridge 210 with knives 212 between a contact position and a separation position, via a connecting rod 214. In the contact position, the knives 212 of the contact bridge 210 are deeply inserted into contact clamps 215 connected to the connection pads of the switch.
- the connecting rod 214 is provided with an oblong 216 , so that when the contact bridge 210 is in the contact position and the mechanism in the closed position, it is possible, without moving the contact bridge, to bring the lever 202 with a handle 218 from the closed position to beyond the neutral position. In this way, the spring was loaded before the separation of the contacts and one benefits from all the energy accumulated to suddenly open the apparatus.
- Mechanisms for rapid opening are also known. These are typically the circuit breaker mechanisms, which has been shown a schematic diagram on the figure 2 .
- Such a mechanism comprises an upper connecting rod 220 and a lower connecting rod 222 forming a toggle joint 224 connecting a hook 226 to a contact bar 228.
- the hook 226 pivots about a fixed axis 227 and is retained by a lock 230 in a lock position.
- a handle 232 pivoting about a fixed geometric axis 234 is connected to the hinge axis 236 of the toggle joint 224 via an accumulation spring 238.
- the latch 230 When it is necessary to separate the contacts without maneuvering the handle, especially in the event of a short circuit or electrical fault, the latch 230 is operated which releases the hook. The residual charge of the accumulation spring 238 in the closed position is then sufficient to drive the contact carrier 228 in the separation position, the mechanism then being in a triggered position.
- Such a mechanism responds to the need for a quick remote opening maneuver without motorization.
- it is not suitable for an apparatus requiring significant mechanical energy at closing, because by unfolding and folding, the toggle 224 never passes on both sides of its dead point corresponding to the alignment of axes of the upper link 220 and the lower link 222. In the closed position shown on the figure 2 the equilibrium is obtained by the residual tension of the accumulation spring, which also dictates the contact pressure.
- the closed position is not absolutely stable in the sense that, by applying a sufficient effort on the contact door to open the contacts, we can fold the knee 224.
- To increase the electrodynamic strength it is necessary to strengthen the accumulation spring and consequently all parts of the mechanism that are subject to deformation and greater wear. Therefore, this type of construction is largely unsuitable for devices requiring strong electrodynamic resistance.
- the document DE-C-19507605 discloses a mechanism for electrical cut-off apparatus with a disengageable transmission kinematic chain.
- the invention therefore aims to overcome the drawbacks of the state of the art, so as to provide an electrical switchgear ensuring the passage of a very high permanent current, while allowing a quick opening operation and low energy, lending itself for example to a remote control.
- bistable sub-assembly ensures the irreversibility of the closed position, thus the guarantee of a high electrodynamic resistance.
- the possibility of disengaging the disengageable transmission chain makes it possible to release the contact door and to make it independent of the bistable subsystem, which is by nature too slow to allow a fast and low energy maneuver.
- the mechanism further comprises means for driving the movable contact carrier from the contact position to the separation position when the disengageable transmission kinematic chain is in the disengaged state.
- the means used can be of all types, motorized or not.
- the means for driving the contact carrier comprise a trigger transmission kinematic chain, arranged between the accumulation spring and the contact holder, so that when the disengageable transmission kinematic chain is in the When engaged, the trigger transmission kinematic chain does not transmit the movement of the movable contact carrier between the contact position and the separation position to the accumulation spring and when the disengageable transmission kinematic chain changes from engaged in the disengaged state, the accumulation spring discharges by driving the movable contact carrier from the contact position to the separation position via the trigger transmission kinematic chain.
- the accumulation spring which carries out the opening and closing via the bistable subassembly is also used for the opening by disengaging.
- the means for driving the mobile contact carrier further comprise an additional spring.
- the accumulation spring and the additional spring together effect the opening by disengaging.
- the additional spring only accumulates additional energy so that the storage spring does not have to provide all the fast opening energy.
- the additional spring alone provides all the energy necessary to separate the contacts during the disengagement, which avoids the installation of a chain kinematic transmission trigger between the accumulation spring and the contact holder.
- the mechanism further comprises a disengaging latch locking the disengageable transmission kinematic chain in the engaged state.
- the disengageable transmission chain can be brought into the disengaged state by various means: return spring, ramp, etc.
- the mechanism further comprises an opening latch locking the means for driving the movable contact carrier.
- the two locks coexist and the opening lock also locks the release lock, so that a single order can control the entire mechanism.
- the disengagement lock is moved by the means for driving the mobile contact carrier. Then, to operate the release latch, the energy of the means for driving the movable contact carrier is used when the disengageable transmission kinematic chain is in the disengaged state, ie for example the energy of the accumulation spring or the additional spring, as the case may be.
- the positioning of the spring between the hinge and the hook makes it possible to use both ends of the spring as a moving motor part.
- the bistable subassembly it is the end of the spring side articulation that applies the mechanical work.
- the triggering phases it is the end of the hook-side spring that becomes mobile. The timeline obtained during the triggering allows a reliable command initiated by a lock.
- the contact holder supports at least a first contact cooperating with a second contact and forming with the second contact a pair of clamp contacts and knives.
- the first contact may be secured to the contact holder.
- a low power voltage switch comprises a contact bridge 10 movable in rotation about an axis 12 and provided with two movable contacts 14, cooperating with fixed connection contacts 16 connected to the connection pads of the switch.
- the contacts 14, 16 are of the knife and clamp type.
- the contact bridge 10 is driven by a mechanism driven by an accumulation spring 20.
- a frame 21 supporting the mechanism and shown purely schematically in the figures, defines a fixed geometric reference.
- the geometric axis 12 of rotation of the contact bridge is fixed in this frame of reference.
- the mechanism comprises a bistable subassembly 22 formed by a connecting rod 24 articulated on a bistable lever 26 at an axis 28.
- the connecting rod 24 forms an oblong 30 in which slides a slide 32 secured to a hook 34 for controlling the mechanism and extended by a projecting free end 36.
- the accumulation spring 20 is a compression spring whose one end cooperates with the connecting rod 24 near the hinge 28 and whose other end is supported on the control hook 34.
- the stroke of the hinge 28 is limited on one side by a fixed closing abutment 38 and on the other by a fixed opening abutment 42.
- the hinge 38 also co-operates with an arm 40 of the control hook 34, in a plane different from that where the stop 42 is located.
- a slide 44 secured to the lever 26 is guided in a slot 46 integral with a handle 48 for operating the mechanism.
- the slot 46 forms a link to travel limited on one side by an abutment 50 and on the other by the end edge of the slot, a return spring 52 tending to move the bistable lever 26 away from the abutment 50.
- the handle 48 and the bistable lever 26 are pivoted around the same fixed geometric axis 53.
- the bistable subassembly 22 is connected to the contact bridge 10 via a disengageable subassembly 54 composed of a rod 56, an upper bar 58 and a lower bar 60.
- the upper bar 58 is a lever pivoting about a fixed geometric axis 62, connected to the bistable lever 26 via the rod 56 and provided with an end projection 64.
- the lower bar 60 has a groove 66 cooperating with the projection 64 the upper bar 58 to form a disengageable coupling 68.
- the connection between the lower bar 60 and the contact bridge 10 is formed by an oblong guide slot 70 cooperating with a slide 72 integral with the contact bridge 10 and allowing a clearance of the bridge 10 relative to the lower bar 60.
- the hook 34 pivots around a geometric axis 74 fixed relative to the frame of the apparatus and its free end is provided with a roller 76 locked in position by a cam 78 retained integral with a main latch 80 of the mechanism, and even locked by a control lock 82.
- the main lock pivots about a fixed geometric axis 83 and is biased by a return spring 84 clockwise in the figures.
- the main latch 80 cooperates with the lower bar 60 via an oblong guide 86.
- a trigger bar 88 connects the hook 34 to the contact bridge 10, via a slide 89 guided in an oblong guide 90.
- the control lock 82 is itself controlled by an electromechanical relay 92 and provided with an extension 94 cooperating with the free end 36 of the connecting rod 24 of the bistable sub-assembly 22.
- a spring blade 96 integral with the handle 48 is arranged so as to be in the path of the hook 34.
- An optional additional spring 98 is disposed at the hook 34, to bias the hook 34 to the disarmed position.
- the device operates as follows.
- the apparatus In the position shown on the figure 3 , the apparatus is in an open armed state undesirable.
- the hinge 28 is in abutment with the opening stop 42.
- the hook 34 held by the hinge 28 is in the armed position, and locked by the main latch 80.
- the additional spring 98, if it exists, is loaded.
- the storage spring 20 is partially loaded.
- the link 24 of the bistable subassembly maintains at its free end 36 the control lock 82 in the locked position so that this position would not be affected if an opening command was transmitted to the electromechanical relay 92.
- the main lock 80 is therefore itself locked in the locking position and acts on the lower bar 60 so as to maintain the disengageable subassembly 54 in an engaged state, the projection 64 of the upper bar 58 being engaged with the groove 66 of the lower bar 60.
- the handle 48 is in the open position, and the slide 44 held by the return spring 52 against the edge of the slot.
- the slider 72 comes into abutment at the end of the light 70, so that the lower bar 60 begins to drive the contact bridge 10 to the contact position.
- the moving knife contacts 14 penetrate into the clamps 16 and while the transmission kinematic chain continues its movement under the impulse of the accumulation spring 20, until the hinge 28 meets the closure stop 38. the closing phase, the trigger bar does not intervene because of oblong 90 which leaves a sufficient clearance.
- the potential energy of the accumulation spring 20 is therefore entirely dedicated to closing the contacts. It should also be noted that in the closed position the slider 89 has not reached the end of the oblong guide 90.
- the pliers 16 and knife contacts 14 admit a range of positioning of the knives relative to each other. to the claws. In this way, the games, tolerances and wear of the parts of the mechanism, which tend to change over time and from one device to another the position of the knives 14 in the clamps 16 when the mechanism is in the closed position defined by the closure stop, have no effect on the quality of the contact obtained.
- the closing abutment does not need to be positioned with great precision.
- the main latch 80 then drives the lower bar 60 so that the projection 64 of the upper bar 58 disengages from the groove 66 of the lower bar 60, thereby passing the disengageable subassembly 54 in a disengaged state.
- the hook 34 biased by the accumulation spring 20, then becomes free to drive the contact bridge 10 via the trigger rod 88, to the separation position shown on the figure 6 . Arriving in this position, the hook 34 interferes with the spring blade 96 so that the handle 48 is pushed back until stopped by the stop 50, in a position indicating the triggered open state of the apparatus.
- the handle 48 is thus used as a device for displaying the state of the apparatus.
- the handle 48 only drives the bistable subassembly 22 and the upper bar 58 by loading the accumulation spring 20.
- the bistable subassembly 22 reaches a reset dead position when the spring 20 is aligned with the pivot axis 53 of the bistable lever 26, but this position is different from the closing dead point position encountered in the closing phase since the slider 32 of the hook which defines the articulation of the connecting rod 24 has changed position.
- the accumulation spring 20 becomes motor but the joint 28 almost immediately meets the arm 40 of the hook 34, so that the accumulation spring 20 is practically unloaded.
- the handle When the movement of the handle 48 is continued to the open position, the handle causes both the bistable subassembly 22 and the hook 34.
- the hook 34 pivots to its armed position, reloads if necessary the additional spring 98 , and releases the main latch 80.
- the main latch 80 under the action of its return spring 84, pivots in the clockwise direction and drives the lower bar 60 so that the projection 64 of the upper bar 58 penetrates into the groove 66 of the lower bar, bringing the disengageable subassembly 54 into the engaged state.
- the end 36 of the connecting rod 24 comes into contact with the control lock 82 and returns it to the locking position.
- the mechanism according to the second embodiment of the invention represented on the figure 7 in open armed position, is of similar constitution to that of the first embodiment, so that the same reference signs have been taken to designate identical or similar elements.
- the bistable subassembly 22 of the second embodiment comprises an upper telescopic rod 24 articulated on a fixed point 32.
- an extension 36 of the connecting rod 24 cooperates with the control lock 82.
- the accumulation spring 20 is no longer able to drive the trigger bar 88, and the additional spring 98 becomes indispensable for driving the contact bridge 10 via the trigger bar 88 during the sequence of trigger.
- the additional spring 98 has been shown in the form of a compression spring which tends to recall the bar of trigger 88 to the right on the figure 7 .
- the bar 88 is movable in translation and provided with a rearming surface 100 and a coupling cam 102.
- the rearming surface 100 cooperates with a rearming lever 104 pivoting about a fixed axis 106 and hinged to the handle.
- the coupling cam 102 interacts with the lower bar 60 to bring the groove 66 into engagement with the projection 64 of the upper bar 58.
- the lower bar 60 is articulated on the contact bridge 10 by means of a light connection 70 and slide 72.
- a spring 110 cooperates with the lower bar 60 in the closed position and tends to pivot lower bar 60 in the clockwise, out of engagement with the upper bar 58.
- the fixed contacts 16 are contact clamps and the movable contacts 14 of the contact bridge are knives.
- the device according to the second embodiment operates in the following manner. Starting from the open armed position represented on the figure 7 , the apparatus is closed by operating the handle 48 in the direction of clockwise, to arrive in the position shown in FIG. figure 8 .
- the bistable subassembly 22 passes the closing dead point beyond which the accumulation spring 20 becomes a motor and drives the contact bridge 10 into the contact position via the bistable lever 26, the connecting rod 56, the upper bar 58 and the lower bar 60.
- the opening by the handle 48 is in the opposite direction.
- the lower bar 60 In closed position, on the figure 8 , the lower bar 60 remains in engagement with the cam 102 so that the upper bar 58 remains integral with the lower bar 60. Furthermore, the reset lever 104 has pivoted and is completely released from the range 100.
- the bar of trigger 88 is held in position by the control lock 82.
- the connecting oblong 90 between the trigger bar 88 and the contact bridge 10 provides a clearance between the two parts.
- the end 36 of the connecting rod 24 has released the control lock 82.
- the control lock 82 To open quickly or remotely the mechanism, it is sufficient to operate the control lock 82 to unlock the trigger bar.
- the additional spring 98 then drives the trigger bar 88 to the right.
- the bar covers the overtravel allowed by the oblong slot 90. This first movement makes it possible to disengage the lower bar 60 from the cam 102, which plays there role of a disengagement lock, as seen on the figure 9 .
- the spring 110 rotates it, which has the effect of disengaging the groove 66 from the projection 64, and releases the lower bar 60.
- the movement of the trigger bar 88 can continue unhindered until the triggered position of the figure 10 .
- a not shown spring may also be disposed between the trigger bar 88 and the handle 48 to return the handle to the triggered open intermediate position.
- the handle 48 acts on the bistable subassembly 22 to return it to the position of the figure 7 .
- the handle 48 also acts on the trigger bar 88 via the reset lever 104 and the bearing 100, and returns the trigger bar 88 in the armed position. This movement of the trigger bar 88 drives the lower bar 60 to the coupling position, through the cam 102.
- the bent end portion 36 of the telescopic upper rod 24 returns the control lock 82 in the locking position.
- the geometric axis of rotation 12 of the contact bridge is not necessarily fixed. It can be a real axis or an imaginary axis.
- the switch be single cut, that is to say include only a fixed contact and a movable contact. In general, the movement of the moving contact (s) is not necessarily a rotation.
- the lock can be controlled by any suitable electromechanical or mechanical means. It can in particular be controlled mechanically by a push button on the front of the device that can replace or add to the relay 92.
- the bistable subassembly may be constituted by connecting rods, telescopic or not and / or levers or any other means ensuring two stable end positions and an intermediate position of unstable neutral point corresponding to a maximum of potential energy accumulated in the spring d 'accumulation.
- Reduction can be provided between the handle and the bistable lever.
- the handle may alternatively cooperate with the connecting rod of the bistable subassembly.
- the handle can be replaced by a motorized mechanism.
- the contact bridge may consist of a pair of clamps and the contacts fixed by knives.
- the knife contacts and clamps can be replaced by any type of equivalent contacts, allowing the moving contact to have a range of positions ensuring contact with the fixed contact with a satisfactory contact pressure.
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Mechanisms For Operating Contacts (AREA)
Description
L'invention est relative à un interrupteur pour basse tension de puissance, pourvu d'un mécanisme de déclenchement.The invention relates to a switch for low voltage power, provided with a trigger mechanism.
Sur la
On connaît par ailleurs des mécanismes permettant une ouverture rapide. Ce sont typiquement les mécanismes de disjoncteur, dont on a représenté un schéma de principe sur la
Le document
L'invention vise donc à remédier aux inconvénients de l'état de la technique, de manière à proposer un appareillage électrique de coupure assurant le passage d'un courant permanent très élevé, tout en permettant une manoeuvre d'ouverture rapide et peu énergétique, se prêtant par exemple à une commande à distance.The invention therefore aims to overcome the drawbacks of the state of the art, so as to provide an electrical switchgear ensuring the passage of a very high permanent current, while allowing a quick opening operation and low energy, lending itself for example to a remote control.
A cet effet, l'invention a pour objet un mécanisme pour un appareillage électrique de coupure, comportant :
- un support ;
- un porte contact mobile par rapport au support entre une position de contact et une position de séparation;
- un sous-ensemble bistable coopérant avec un ressort d'accumulation d'énergie de telle manière que le sous-ensemble bistable oscille entre une position d'ouverture et une position de fermeture, en passant par une position intermédiaire de point mort, le ressort d'accumulation se chargeant lorsque le sous-ensemble bistable s'approche de la position de point mort et se déchargeant lorsque le sous-ensemble bistable s'éloigne de la position de point mort;
- une chaîne cinématique de transmission débrayable mobile entre un état embrayé et un état débrayé, la chaîne cinématique de transmission débrayable dans l'état embrayé assurant une transmission de mouvement entre le sous-ensemble bistable et le porte contact mobile, de telle manière que lorsque le sous-ensemble bistable est en position d'ouverture, le porte contact mobile est en position de séparation et que lorsque le sous-ensemble bistable passe en position de fermeture, le porte contact mobile passe en position de contact, la chaîne cinématique de transmission débrayable dans son état débrayé rendant le porte contact mobile indépendant du sous-ensemble bistable.
- a support ;
- a movable contact holder relative to the support between a contact position and a separation position;
- a bistable subassembly cooperating with an energy storage spring such that the bistable subassembly oscillates between an open position and a closed position, passing through an intermediate neutral position, the spring of accumulating charging when the bistable subassembly approaches the neutral position and discharging when the bistable subassembly moves away from the neutral position;
- a movable disengageable transmission kinematic chain between an engaged state and a disengaged state, the disengageable transmission kinematic chain in the engaged state ensuring a transmission of motion between the bistable subassembly and the movable contact carrier, so that when the bistable subassembly is in the open position, the movable contact carrier is in the separation position and that when the bistable subassembly passes into the closed position, the movable contact carrier moves into the contact position, the transmission kinematic chain disengageable in its disengaged state making the movable contact holder independent of the bistable subassembly.
L'utilisation d'un sous-ensemble bistable assure l'irréversibilité de la position de fermeture, donc la garantie d'une grande tenue électrodynamique. La possibilité de débrayer la chaîne de transmission débrayable permet de libérer le porte contact et de le rendre indépendant du sous-ensemble bistable par nature trop lent pour permettre une manoeuvre rapide et peu énergétique.The use of a bistable sub-assembly ensures the irreversibility of the closed position, thus the guarantee of a high electrodynamic resistance. The possibility of disengaging the disengageable transmission chain makes it possible to release the contact door and to make it independent of the bistable subsystem, which is by nature too slow to allow a fast and low energy maneuver.
Préférentiellement, le mécanisme comporte en outre des moyens pour entraîner le porte contact mobile de la position de contact à la position de séparation lorsque la chaîne cinématique de transmission débrayable est dans l'état débrayé. Les moyens utilisés peuvent être de tous types, motorisé ou non.Preferably, the mechanism further comprises means for driving the movable contact carrier from the contact position to the separation position when the disengageable transmission kinematic chain is in the disengaged state. The means used can be of all types, motorized or not.
Selon un mode de réalisation très avantageux, les moyens pour entraîner le porte contact comportent une chaîne cinématique de transmission de déclenchement, disposée entre le ressort d'accumulation et le porte contact, de telle manière que lorsque la chaîne cinématique de transmission débrayable est dans l'état embrayé, la chaîne cinématique de transmission de déclenchement ne transmet pas au ressort d'accumulation le mouvement du porte contact mobile entre la position de contact et la position de séparation et que, lorsque la chaîne cinématique de transmission débrayable passe de l'état embrayé à l'état débrayé, le ressort d'accumulation se décharge en entraînant le porte contact mobile de la position de contact à la position de séparation par l'intermédiaire de la chaîne cinématique de transmission de déclenchement. Le ressort d'accumulation qui réalise l'ouverture et la fermeture par l'intermédiaire du sous-ensemble bistable est également utilisé pour l'ouverture par débrayage.According to a very advantageous embodiment, the means for driving the contact carrier comprise a trigger transmission kinematic chain, arranged between the accumulation spring and the contact holder, so that when the disengageable transmission kinematic chain is in the When engaged, the trigger transmission kinematic chain does not transmit the movement of the movable contact carrier between the contact position and the separation position to the accumulation spring and when the disengageable transmission kinematic chain changes from engaged in the disengaged state, the accumulation spring discharges by driving the movable contact carrier from the contact position to the separation position via the trigger transmission kinematic chain. The accumulation spring which carries out the opening and closing via the bistable subassembly is also used for the opening by disengaging.
Avantageusement, les moyens pour entraîner le porte contact mobile comportent en outre un ressort additionnel. Selon une première variante, le ressort d'accumulation et le ressort additionnel effectuent ensemble l'ouverture par débrayage. Dans ce cas, le ressort additionnel ne fait qu'accumuler une énergie supplémentaire de sorte que le ressort d'accumulation n'a pas à fournir toute l'énergie d'ouverture rapide. Selon une deuxième variante, le ressort additionnel fournit à lui seul la totalité de l'énergie nécessaire pour séparer les contacts lors du débrayage, ce qui évite la mise en place d'une chaîne cinématique de transmission de déclenchement entre le ressort d'accumulation et le porte contact.Advantageously, the means for driving the mobile contact carrier further comprise an additional spring. According to a first variant, the accumulation spring and the additional spring together effect the opening by disengaging. In this case, the additional spring only accumulates additional energy so that the storage spring does not have to provide all the fast opening energy. According to a second variant, the additional spring alone provides all the energy necessary to separate the contacts during the disengagement, which avoids the installation of a chain kinematic transmission trigger between the accumulation spring and the contact holder.
Avantageusement, le mécanisme comporte en outre un verrou de débrayage verrouillant la chaîne cinématique de transmission débrayable dans l'état embrayé. Lors du déverrouillage, la chaîne de transmission débrayable peut être amenée dans l'état débrayé par différents moyens : ressort de rappel, rampe, etc.Advantageously, the mechanism further comprises a disengaging latch locking the disengageable transmission kinematic chain in the engaged state. When unlocking, the disengageable transmission chain can be brought into the disengaged state by various means: return spring, ramp, etc.
Avantageusement, le mécanisme comporte en outre un verrou d'ouverture verrouillant les moyens pour entraîner le porte contact mobile.Advantageously, the mechanism further comprises an opening latch locking the means for driving the movable contact carrier.
Préférentiellement, les deux verrous coexistent et le verrou d'ouverture verrouille également le verrou de débrayage, de sorte qu'un seul ordre permet de commander l'ensemble du mécanisme.Preferably, the two locks coexist and the opening lock also locks the release lock, so that a single order can control the entire mechanism.
Préférentiellement, le verrou de débrayage est mû par les moyens pour entraîner le porte contact mobile. On utilise alors, pour manoeuvrer le verrou de débrayage, l'énergie du moyen pour entraîner le porte contact mobile lorsque la chaîne cinématique de transmission débrayable est dans l'état débrayé, à savoir par exemple l'énergie du ressort d'accumulation ou du ressort additionnel, selon le cas.Preferably, the disengagement lock is moved by the means for driving the mobile contact carrier. Then, to operate the release latch, the energy of the means for driving the movable contact carrier is used when the disengageable transmission kinematic chain is in the disengaged state, ie for example the energy of the accumulation spring or the additional spring, as the case may be.
Selon un mode de réalisation particulièrement simple et astucieux, le mécanisme comporte en outre :
- un crochet mobile par rapport au support entre une position accrochée et une position décrochée, le sous-ensemble bistable comportant un élément supérieur lié cinématiquement au crochet et un élément inférieur articulé sur l'élément de genouillère supérieur par l'intermédiaire d'un axe d'articulation, le sous-ensemble bistable étant mobile entre la position d'ouverture et la position de fermeture lorsque le crochet est en position accrochée, le ressort d'accumulation étant disposé entre le crochet et l'axe d'articulation et tendant à entraîner le crochet vers la position décrochée, la chaîne cinématique de transmission de déclenchement étant disposée entre le crochet et le porte contact mobile, de telle manière qu'en passant de la position accrochée à la position décrochée, le crochet entraîne le porte contact mobile de la position de contact à la position de séparation, par l'intermédiaire de la chaîne cinématique de transmission de déclenchement ;
- un verrou mobile entre une position de verrouillage et une position de déverrouillage, le verrou en position de verrouillage retenant le crochet en position accrochée; et éventuellement
- une liaison cinématique entre le crochet et/ou le verrou de commande d'une part et la chaîne cinématique de transmission débrayable d'autre part, de telle manière que lorsque le verrou de commande passe de la position de verrouillage à la position de déverrouillage en libérant le crochet, le crochet et/ou le verrou de commande font passer la chaîne cinématique de transmission débrayable de l'état embrayé à l'état débrayé, avant que le crochet entraîne le porte contact mobile de la position de contact à la position de séparation.
- a hook movable relative to the support between a hooked position and an unhooked position, the bistable subassembly comprising an upper element kinematically connected to the hook and a lower element hinged to the upper toggle member via an axis d articulation, the bistable subassembly being movable between the open position and the closed position when the hook is in the hooked position, the accumulation spring being disposed between the hook and the hinge pin and tending to cause the hook to the unhooked position, the trigger transmission kinematic chain being arranged between the hook and the movable contact holder, such that when passing from the hooked position to the unhooked position, the hook drives the movable contact carrier of the position contact at the separation position, via the trigger transmission kinematic chain;
- a lock movable between a locking position and an unlocking position, the lock in the locking position holding the hook in the hooked position; and eventually
- a kinematic connection between the hook and / or the control lock on the one hand and the disengageable transmission kinematic chain on the other hand, so that when the control lock goes from the locking position to the unlocking position in releasing the hook, the hook and / or the control lock move the disengageable transmission kinematic chain from the engaged state to the disengaged state, before the hook causes the movable contact carrier from the contact position to the position of separation.
Le positionnement du ressort entre l'articulation et le crochet permet d'utiliser les deux extrémités du ressort comme partie motrice mobile. Dans les phases de fermeture et d'ouverture par le sous-ensemble bistable, c'est l'extrémité du ressort côté articulation qui applique le travail mécanique. Dans les phases de déclenchement c'est l'extrémité du ressort côté crochet qui devient mobile. La chronologie obtenue lors du déclenchement permet une commande fiable initiée par un verrou.The positioning of the spring between the hinge and the hook makes it possible to use both ends of the spring as a moving motor part. In the closing and opening phases by the bistable subassembly, it is the end of the spring side articulation that applies the mechanical work. In the triggering phases it is the end of the hook-side spring that becomes mobile. The timeline obtained during the triggering allows a reliable command initiated by a lock.
Selon un mode de réalisation préférentiel, particulièrement adapté aux appareils à très haute tenue électrodynamique, le porte contact supporte au moins un premier contact coopérant avec un deuxième contact et formant avec le deuxième contact une paire de contacts à pince et couteaux. Dans ce cas, le premier contact peut être solidaire du porte contact. Alternativement, il est également possible de prévoir un contact relié au porte contact par un ressort de pression de contact, dans des applications pour lesquelles la tenue électrodynamique est moins essentielle.According to a preferred embodiment, particularly suitable for devices with very high electrodynamic strength, the contact holder supports at least a first contact cooperating with a second contact and forming with the second contact a pair of clamp contacts and knives. In this case, the first contact may be secured to the contact holder. Alternatively, it is also possible to provide a contact connected to the contact door by a contact pressure spring, in applications for which the electrodynamic resistance is less essential.
D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de modes particuliers de réalisation de l'invention, donnés à titre d'exemples non limitatifs, et représentés aux dessins annexés sur lesquels :
- la
figure 1 représente de manière schématique un interrupteur de puissance de type connu, dans une position d'ouverture ; - la
figure 2 représente de manière schématique un disjoncteur basse tension de type connu, dans une position de fermeture ; - les
figures 3 à 6 représentent un appareillage selon un premier mode de réalisation de l'invention, respectivement dans un état ouvert-armé, dans un état fermé, dans un état intermédiaire en début de déclenchement et dans un état déclenché ; - les
figures 7 à 10 représentent un appareillage selon un deuxième mode de réalisation de l'invention respectivement dans un état ouvert-armé, dans un état fermé, dans un état intermédiaire en début de déclenchement et dans un état déclenché.
- the
figure 1 schematically represents a power switch of known type, in an open position; - the
figure 2 schematically represents a low voltage circuit breaker of known type, in a closed position; - the
Figures 3 to 6 represent an apparatus according to a first embodiment of the invention, respectively in an open-armed state, in a closed state, in an intermediate state at the beginning of tripping and in a tripped state; - the
Figures 7 to 10 represent an apparatus according to a second embodiment of the invention respectively in an open-armed state, in a closed state, in an intermediate state at the beginning of tripping and in a tripped state.
En référence aux
Le mécanisme comporte un sous-ensemble bistable 22 formé par une bielle 24 articulée sur un levier bistable 26 au niveau d'un axe 28. La bielle 24 forme un oblong 30 dans lequel coulisse un coulisseau 32 solidaire d'un crochet 34 de commande du mécanisme et prolongé par une extrémité libre saillante 36. Le ressort d'accumulation 20 est un ressort de compression dont une extrémité coopère avec la bielle 24 à proximité de l'articulation 28 et dont l'autre extrémité est en appui sur le crochet de commande 34. La course de l'articulation 28 est limitée d'un côté par une butée de fermeture fixe 38 et de l'autre par une butée d'ouverture fixe 42. L'articulation 38 coopère également avec un bras 40 du crochet de commande 34, dans un plan différent de celui où se trouve la butée 42.The mechanism comprises a
Un coulisseau 44 solidaire du levier 26 est guidé dans une fente 46 solidaire d'une poignée 48 de manoeuvre du mécanisme. La fente 46 forme une liaison à débattement limité d'un côté par une butée 50 et de l'autre par le rebord d'extrémité de la fente, un ressort de rappel 52 tendant à éloigner le levier bistable 26 de la butée 50. La poignée 48 et le levier bistable 26 pivotent autour d'un même axe géométrique fixe 53.A
Le sous-ensemble bistable 22 est relié au pont de contact 10 par l'intermédiaire d'un sous-ensemble débrayable 54 composé d'une bielle 56, d'un barreau supérieur 58 et d'un barreau inférieur 60. Le barreau supérieur 58 est un levier pivotant autour d'un axe géométrique fixe 62, lié au levier bistable 26 par l'intermédiaire de la bielle 56 et muni d'une saillie d'extrémité 64. Le barreau inférieur 60 comporte une rainure 66 coopérant avec la saillie 64 du barreau supérieur 58 pour former un accouplement débrayable 68. La liaison entre le barreau inférieur 60 et le pont de contact 10 est réalisée par une lumière de guidage oblongue 70 coopérant avec un coulisseau 72 solidaire du pont de contact 10 et autorisant un débattement du pont de contact 10 par rapport au barreau inférieur 60.The
Le crochet 34 pivote autour d'un axe géométrique 74 fixe par rapport au châssis de l'appareil et son extrémité libre est munie d'un galet 76 verrouillé en position par une came 78 retenue solidaire d'un verrou principal 80 du mécanisme, lui-même verrouillé par un verrou de commande 82. Le verrou principal pivote autour d'un axe géométrique fixe 83 et est rappelé par un ressort de rappel 84 dans le sens horaire sur les figures. Le verrou principal 80 coopère avec le barreau inférieur 60 par l'intermédiaire d'un guidage oblong 86. Un barreau de déclenchement 88 relie le crochet 34 au pont de contact 10, par l'intermédiaire d'un coulisseau 89 guidé dans un guidage oblong 90. Le verrou de commande 82 est lui-même commandé par un relais électromécanique 92 et muni d'une prolongation 94 coopérant avec l'extrémité libre 36 de la bielle 24 du sous-ensemble bistable 22. Une lame ressort 96 solidaire de la poignée 48 est disposée de manière à se trouver sur la trajectoire du crochet 34.The
Un ressort additionnel 98 optionnel est disposé au niveau du crochet 34, pour solliciter le crochet 34 vers la position désarmée.An optional
Le dispositif fonctionne de la manière suivante.The device operates as follows.
Dans la position représentée sur la
On passe de la position de la
Pour passer de la position fermée de la
Partant de la position fermée de la
Pour ramener l'interrupteur de la position de la
Le mécanisme selon le deuxième mode de réalisation de l'invention, représenté sur la
En référence à la
Le barreau inférieur 60 est articulé sur le pont de contact 10 par l'intermédiaire d'une liaison à lumière 70 et coulisseau 72. Un ressort 110 coopère avec le barreau inférieur 60 en position fermée et tend à faire pivoter de barreau inférieur 60 dans le sens des aiguilles d'une montre, hors de prise avec le barreau supérieur 58. Les contacts fixes 16 sont des pinces de contact et les contacts mobiles 14 du pont de contact sont des couteaux.The
Le dispositif selon le deuxième mode de réalisation fonctionne de la manière suivante. Partant de la position ouverte armée représentée sur la
En position fermée, sur la
Pour ouvrir rapidement ou à distance le mécanisme, il suffit de manoeuvrer le verrou de commande 82 pour déverrouiller le barreau de déclenchement. Le ressort additionnel 98 entraîne alors le barreau de déclenchement 88 vers la droite. Dans un premier temps, le barreau couvre la surcourse permise par la lumière oblongue 90. Ce premier mouvement permet de dégager le barreau inférieur 60 de la came 102 qui joue là le rôle d'un verrou de débrayage, comme on le voit sur la
Pour ramener le dispositif en position ouverte armée, il suffit de manoeuvrer la poignée 48 vers la position ouverte, dans le sens inverse des aiguilles d'une montre. La poignée 48 agit sur le sous-ensemble bistable 22 pour le ramener dans la position de la
Naturellement, diverses modifications sont possibles.Naturally, various modifications are possible.
L'axe géométrique de rotation 12 du pont de contact n'est pas nécessairement fixe. Il peut s'agir d'un axe réel ou bien d'un axe imaginaire. L'interrupteur être à simple coupure, c'est-à-dire ne comporter qu'un contact fixe et un contact mobile. D'une manière générale, le mouvement du ou des contacts mobiles n'est pas nécessairement une rotation.The geometric axis of
Le verrou peut être commandé par tout moyen électromécanique ou mécanique adéquat. Il peut notamment être commandé mécaniquement par un bouton poussoir en face avant de l'appareil qui peut remplacer ou s'ajouter au relais 92.The lock can be controlled by any suitable electromechanical or mechanical means. It can in particular be controlled mechanically by a push button on the front of the device that can replace or add to the
Le sous-ensemble bistable peut être constitué par des bielles, télescopiques ou non et/ou des leviers ou tout autre moyen assurant deux positions extrêmes stables et une position intermédiaire de point mort instable correspondant à un maximum d'énergie potentielle accumulée dans le ressort d'accumulation.The bistable subassembly may be constituted by connecting rods, telescopic or not and / or levers or any other means ensuring two stable end positions and an intermediate position of unstable neutral point corresponding to a maximum of potential energy accumulated in the spring d 'accumulation.
Une démultiplication peut être prévue entre la poignée et le levier bistable. La poignée peut alternativement coopérer avec la bielle du sous-ensemble bistable.Reduction can be provided between the handle and the bistable lever. The handle may alternatively cooperate with the connecting rod of the bistable subassembly.
La poignée peut être remplacée par un mécanisme motorisé.The handle can be replaced by a motorized mechanism.
Le pont de contact peut être constitué par une paire de pinces et les contacts fixes par des couteaux. Les contacts à couteaux et pinces peuvent être remplacés par tout type de contacts équivalents, permettant au contact mobile d'avoir une plage de positions assurant le contact avec le contact fixe avec une pression de contact satisfaisante.The contact bridge may consist of a pair of clamps and the contacts fixed by knives. The knife contacts and clamps can be replaced by any type of equivalent contacts, allowing the moving contact to have a range of positions ensuring contact with the fixed contact with a satisfactory contact pressure.
On peut également envisager d'utiliser un contact mobile relié au porte contact par un ressort de pression de contact, bien que cette solution soit moins performante en terme de tenue électrodynamique. Dans une telle hypothèse, il peut être envisagé de mettre en oeuvre des contacts compensés d'un point de vue électrodynamique, c'est-à-dire conformés de telle manière que les forces induites par le courant électrique sur la partie mobile attirent le contact mobile vers le contact fixe. De tels contacts, décrits par exemple dans le document
Claims (11)
- A mechanism for an electrical switchgear unit, comprising:- a support (21);- a contact-bearing member (10) movable with respect to the support (21) between a contact position and a separated position;- a bistable sub-assembly (22) operating in conjunction with an energy storage spring (20) in such a way that the bistable sub-assembly (22) oscillates between an open position and a closed position, passing via an intermediate dead-point position, the energy storage spring (20) loading when the bistable sub-assembly (22) approaches the dead-point position and unloading when the bistable sub-assembly (22) moves away from the dead-point position;
characterized in that it further comprises:- a disengageable kinematic transmission system (54) movable between an engaged state and a disengaged state, the disengageable kinematic transmission system (54) in the engaged state performing transmission of movement between the bistable sub-assembly (22) and the movable contact-bearing member (10) in such a way that when the bistable sub-assembly (22) is in the open position, the movable contact-bearing member (10) is in the separated position and that when the bistable sub-assembly (22) moves to the closed position, the movable contact-bearing member (10) moves to the contact position, the disengageable kinematic transmission system (54) in its disengaged state rendering the movable contact-bearing member (10) independent from the bistable sub-assembly (22). - The mechanism according to claim 1, characterized in that it further comprises means (88) for driving the movable contact-bearing member (10) from the contact position to the separated position when the disengageable kinematic transmission system (54) is in the disengaged state.
- The mechanism according to claim 2, characterized in that the means for driving the contact-bearing member comprise a kinematic trip transmission system (88) arranged between the energy storage spring (20) and the contact-bearing member in such a way that, when the disengageable kinematic transmission system (54) is in the engaged state, the kinematic trip transmission system (88) does not transmit the movement of the movable contact-bearing member (10) between the contact position and the separated position to the energy storage spring (20) and that, when the disengageable kinematic transmission system (54) moves from the engaged state to the disengaged state, the energy storage spring (20) relaxes, driving the movable contact-bearing member (10) from the contact position to the separated position by means of the kinematic trip transmission system (88).
- The mechanism according to claim 2 or claim 3, characterized in that the means for driving the movable contact-bearing member (10) further comprise an additional spring (98).
- The mechanism according to any one of the foregoing claims, characterized in that it further comprises a disengagement catch (80, 102) latching the disengageable kinematic transmission system (54) in the engaged state.
- The mechanism according to any one of claims 2 to 5, characterized in that it further comprises an opening catch (82) latching the means for driving the movable contact-bearing member (10).
- The mechanism according to any one of claims 2 to 4, characterized in that it further comprises:- a disengagement catch (80, 102) latching the disengageable kinematic transmission system (54) in the engaged state;- an opening catch (82) latching the means for driving the movable contact-bearing member (10) and the disengagement catch (80, 102).
- The mechanism according to any one of claims 2 to 4, characterized in that the disengagement catch is moved by the means for driving the movable contact-bearing member (10).
- The mechanism according to claim 3, characterized in that it further comprises:- a latch (34) movable with respect to the support between a latched position and an unlatched position, the bistable sub-assembly (22) comprising an upper member (24) kinematically linked to the latch (34) and a lower member (26) articulated on the upper toggle member by means of a pivot-pin (28), the bistable sub-assembly (22) being movable between the open position and the closed position when the latch (34) is in the latched position, the energy storage spring (20) being arranged between the latch (34) and pivot-pin (28) and tending to drive the latch (34) to the unlatched position, the kinematic trip transmission system (88) being arranged between the latch (34) and the movable contact-bearing member (10), in such a way that, when moving from the latched position to the unlatched position, the latch (34) drives the movable contact-bearing member (10) from the contact position to the separated position, by means of the kinematic trip transmission system (88);- a catch (80) movable between a latching position and an unlatching position, the catch (80) in the latching position retaining the latch in the latched position (34).
- The mechanism according to claim 9, characterized in that it further comprises:- a kinematic link between the latch (34) and/or operating catch (82) on the one hand and the disengageable kinematic transmission system (54) on the other hand in such a way that, when the operating catch (82) moves from the latching position to the unlatching position releasing the latch (34), the latch (34) and/or operating catch (82) make the disengageable kinematic transmission system (54) move from the engaged state to the disengaged state, before the latch (34) drives the movable contact-bearing member (10) from the contact position to the separated position.
- The mechanism according to any one of the foregoing claims, characterized in that the contact-bearing member supports at least a first contact operating in conjunction with a second contact and forming a pair of tulip finger and knife-blade contacts with the second contact.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0209054 | 2002-07-17 | ||
FR0209054A FR2842645B1 (en) | 2002-07-17 | 2002-07-17 | SWITCH PROVIDED WITH A TRIGGER DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1383150A1 EP1383150A1 (en) | 2004-01-21 |
EP1383150B1 true EP1383150B1 (en) | 2011-05-04 |
Family
ID=27799309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03354049A Expired - Lifetime EP1383150B1 (en) | 2002-07-17 | 2003-06-02 | Switch with a trip device |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1383150B1 (en) |
CN (1) | CN1263062C (en) |
DE (1) | DE60336964D1 (en) |
ES (1) | ES2361982T3 (en) |
FR (1) | FR2842645B1 (en) |
HU (1) | HUP0302180A3 (en) |
NO (1) | NO324224B1 (en) |
PL (1) | PL204998B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103077856B (en) * | 2011-10-25 | 2015-03-04 | 施耐德电器工业公司 | Asymmetric double-contact breaker |
FR3028661B1 (en) * | 2014-11-19 | 2016-12-30 | Schneider Electric Ind Sas | ELECTRIC CIRCUIT BREAKER INCLUDING A TRIGGER BLOCK |
CN108573837B (en) * | 2018-07-26 | 2024-03-19 | 厦门大恒科技有限公司 | Wound-type memory alloy reclosing valve |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19507605C1 (en) * | 1995-03-04 | 1996-08-22 | Abb Patent Gmbh | Snap-action latching mechanism for electrical switch |
-
2002
- 2002-07-17 FR FR0209054A patent/FR2842645B1/en not_active Expired - Fee Related
-
2003
- 2003-06-02 DE DE60336964T patent/DE60336964D1/en not_active Expired - Lifetime
- 2003-06-02 EP EP03354049A patent/EP1383150B1/en not_active Expired - Lifetime
- 2003-06-02 ES ES03354049T patent/ES2361982T3/en not_active Expired - Lifetime
- 2003-07-07 NO NO20033109A patent/NO324224B1/en not_active IP Right Cessation
- 2003-07-11 HU HU0302180A patent/HUP0302180A3/en unknown
- 2003-07-16 PL PL361298A patent/PL204998B1/en unknown
- 2003-07-17 CN CN03145881.5A patent/CN1263062C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2361982T3 (en) | 2011-06-24 |
CN1479331A (en) | 2004-03-03 |
NO20033109D0 (en) | 2003-07-07 |
HUP0302180A2 (en) | 2004-04-28 |
HUP0302180A3 (en) | 2004-05-28 |
DE60336964D1 (en) | 2011-06-16 |
PL361298A1 (en) | 2004-01-26 |
EP1383150A1 (en) | 2004-01-21 |
HU0302180D0 (en) | 2003-09-29 |
FR2842645B1 (en) | 2004-09-10 |
NO324224B1 (en) | 2007-09-10 |
CN1263062C (en) | 2006-07-05 |
PL204998B1 (en) | 2010-02-26 |
FR2842645A1 (en) | 2004-01-23 |
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