EP3002769B1 - Integrated circuit breaker - Google Patents
Integrated circuit breaker Download PDFInfo
- Publication number
- EP3002769B1 EP3002769B1 EP14187340.6A EP14187340A EP3002769B1 EP 3002769 B1 EP3002769 B1 EP 3002769B1 EP 14187340 A EP14187340 A EP 14187340A EP 3002769 B1 EP3002769 B1 EP 3002769B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit breaker
- contact
- contact carrier
- main
- precharge
- 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.)
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Links
- 230000008878 coupling Effects 0.000 claims description 67
- 238000010168 coupling process Methods 0.000 claims description 67
- 238000005859 coupling reaction Methods 0.000 claims description 67
- 230000003068 static effect Effects 0.000 claims description 30
- 230000005294 ferromagnetic effect Effects 0.000 claims description 26
- 239000000969 carrier Substances 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000005405 multipole Effects 0.000 claims description 2
- 230000005291 magnetic effect Effects 0.000 description 30
- 238000005192 partition Methods 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 11
- 238000009434 installation Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/541—Auxiliary contact devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/546—Contact arrangements for contactors having bridging contacts
Definitions
- the invention relates to a contactor, which has main and Vorladeuttone and is designed to switch high power arc-avoiding by coordinated closing and opening of the main and Vorladeabele.
- the contactor according to the invention is compact and easy to manufacture.
- the invention relates to a control cabinet, in which in addition to a variety of switching devices and at least one contactor according to the invention is installed, which has the same installation depth as the other switching devices.
- a multi-pole switching device which comprises a ballast module in the form of a rake.
- the ballast module has a first and a second part, which are each provided with spring-mounted contact bridges and are releasably coupled to each other via a permanent magnet and a magnetizable plate.
- the first part also has an integrally formed crosspiece, which projects out of the first part as an arm and partly projects beyond the second part in the upstream module. On the crosspiece a portion is formed with a T-shaped cross-section which is positively connected to a valve of an electromagnet.
- the publication CN 202616144 U discloses a capacitor contactor comprising a plurality of main and precharge contacts with associated contact bridges.
- the contact bridges are spring-loaded in a main contact carrier and a pre-charge contact carrier and are movable along an axial direction.
- the auxiliary contact carrier is formed in two parts, so that dissolves when closing the main contacts, a first part of the pre-charging contact carrier of a magnetically coupled second part of the pre-charging contact carrier.
- the precharge contacts are accommodated in a ballast module in a separate housing which separates precharge contacts from the main contacts.
- a precharge contact unit which comprises a crossbar, which is arranged vertically movable in a housing of the precharge contact unit.
- To Crossbar includes a body on which a plurality of partitions is attached, which are connected to an attached cross member. Between the main body and the cross member further transversely oriented carrier are arranged, which divide the contact cells defined by the partitions, the main body and the cross member.
- On the cross member further comprises a coupling piece is mounted, which is adapted to form a positive connection with a mechanical counterpart. The operation of the Crossbar via a force acting axially on the coupling piece force.
- a disadvantage of the known contactors is that their mechanical structure requires a lot of space. As a result, with a large number of sizes of contactors, the standard mounting depth of other switching devices in a control cabinet can not be complied with. In view of the increasing complexity of any kind of machines, the number of contactors in a control cabinet is increasing, so that the goal is to reduce contactors. Furthermore, the solutions known from the prior art are based on the fact that geometrically complex components are used. The manufacture and handling of such complex components is detrimental to rapid and efficient manufacture of shooters.
- the invention has for its object to provide an improved contactor, which overcomes the disadvantages of the prior art. Another object is to provide a cabinet that is space-saving equipped with switching devices and contactors.
- the task is solved by the contactor according to the invention according to independent claim 1 and its further embodiments according to the dependent claims 2 to 12. Furthermore, the task is solved by a control cabinet according to independent claim 13.
- the contactor according to the invention comprises a main contact carrier, which is movably received in a housing of the contactor. At least one main contact bridge, which is arranged in a main contact cell, is attached to the main contact carrier. The main contact in the contactor is switched by means of the main contact carrier.
- the contactor according to the invention further comprises a pre-charging contact carrier, which is provided with at least one Vorladebergmaschine. Adjacent to the precharge contact carrier is a switching chamber component mounted in the contactor to which a static precharge contact is attached.
- the precharge contact bridge is configured to close the static precharge contact, thereby establishing a precharge contact.
- a precharge contact carrier spring is arranged, so that the precharge contact carrier is elastically received on the switching chamber component.
- the precharge contact carrier is releasably connectable by means of a magnet with a coupling extension on the main contact carrier. Upon actuation of the contactor according to the invention, the release of the magnetic coupling takes place on the magnet when the main contact is closed and the precharge contact is open.
- a direct releasable coupling between the main contact carrier and the pre-charging contact carrier makes it possible to save space in the switching mechanism of the contactor according to the invention, so that the installation depth of the contactor can be reduced.
- the precharge contact carrier in the contactor according to the invention has a simple geometry.
- complex multipart precharge contact carriers which have coupling mechanisms in themselves, can be dispensed with.
- the precharge contact carrier has due to its simple geometry to a reduced number of dimensions, which are to be maintained to ensure the operating precision of the contactor low tolerances.
- a concatenation of manufacturing tolerances, which are necessary for sufficient operating precision, as is common in multi-part pre-charging contact carriers, is eliminated. As a result, the overall production of the contactor according to the invention is further simplified.
- the contactor according to the invention may further be formed on one side of the switching chamber component a stop surface.
- the stop surface is preferably an area on a side of a bottom portion of the switching chamber component facing the precharge contact carrier.
- the precharge contact carrier Due to the spring force of the precharge contact carrier spring, the precharge contact carrier is then moved to a position where the precharge contact is open. In this way, a decoupling in a switching operation is ensured in a reliable manner, so that after closing a main contact of the pre-charging is opened automatically and the switching operation is completed.
- the coupling extension is formed integrally with a partition which delimits the at least one main contact cell.
- the coupling extension is formed as the end region of the partition, which is the pre-charge contact carrier.
- the one-piece shape of the coupling extension with the partition represents a component-saving and easy-to-manufacture variant of the contactor according to the invention.
- the coupling extension is arranged on a strut, the at least two partitions in the main contact carrier connects to each other.
- the strut encloses a main contact cell with two partitions each. This provides another possibility where the coupling extension can be arranged in the contactor.
- a coupling extension which is connected to the strut, can be structurally positioned at a plurality of locations on the main contact carrier, so that the contactor according to the invention can be adapted to differently configured precharge contact carriers. This overall improves the scalability of the contactor according to the invention.
- the main contact carrier may have a coupling extension in the contactor according to the invention, which extends through a recess in the switching chamber component.
- the main contact carrier can be produced in a simple manner, with the position of the end of the coupling extension in relation to a stroke direction being relevant for the kinematics and operating precision of the contactor according to the invention. Furthermore, space is further saved by the coupling extension, which extends through the recess in the switching chamber component.
- the switching chamber component also has an easy-to-manufacture form. Overall, the contactor according to the invention has a reduced complexity compared to the solutions known from the prior art, wherein the components of the contactor can be produced even with reduced effort. The contactor is also built to save space.
- the recess has a peripheral border.
- the recess is formed substantially as an opening in the bottom portion of the switching chamber component.
- the border of the recess End points and is formed as a material recess at the edge of the bottom portion of the switching chamber component.
- the switching chamber component is firmly connected to a housing of the contactor.
- the already existing housing is used in the kinematics of the contactor as a fixed point for the switching chamber component, and thus also as a fixation for the case of a switching operation to be traversed movements of Vorladeuttonologis.
- the switching chamber component is thus an anchor point for the kinematics of the precharging contact carrier and the main contact carrier. As a result, the switching mechanism of the precharge contact is compactly coupled to the main contact carrier.
- the contactor according to the invention may further be formed between the bottom portion of the switching chamber component and the movable main contact carrier, a working stroke along which the main contact carrier can be moved.
- the available space in the contactor is thereby exploited more, so that the installation depth of the contactor can be further minimized.
- the main contact carrier is provided with a ferromagnetic armature, which can be moved by means of a magnetic coil, which is arranged in the region of the bottom of the housing, along a stroke direction of the main contact carrier.
- the solenoid also serves to hold the main contact carrier in the appropriate position when the main contacts are closed.
- a solenoid provides a reliable means of electrically actuating actuation of the contactor.
- the pre-charging contact carrier can be formed in one piece.
- the one-piece Vorladeutton thereby comprises at least one auxiliary contact cell, which is limited by partitions. Between the partitions on Vorladeromenum a spring carrier is preferably formed, on which a Vorladeromefeder can be stored.
- the one-piece Vorladeuttonffy is formed symmetrically, so that a Installation in several orientations and mounting positions is possible.
- the one-piece Vorladeromeffy can be made for example as an injection molded part quickly and cost-effectively.
- a complex assembly step as in a multi-part precharge contact carrier, which has a coupling mechanism in itself, is eliminated. Furthermore, a mechanical handling of the individual components during assembly is facilitated by a symmetrical shape of the precharging contact carrier, thereby further increasing cost efficiency.
- a pre-charging contact bridge spring is arranged between a pre-charging contact bridge and the pre-charging contact carrier, which has a spring travel.
- the mechanical coupling of the main contact carrier to the precharge contact carrier forces the precharge contact carrier to continue its lifting movement.
- the Vorladeutton Portugal is elastically supported by the Vorlade. Why the precharge contact carrier and the precharge contact bridge is the pressure path of the precharge contact carrier.
- the contactor according to the invention may comprise a ferromagnetic plate which is arranged on the coupling extension on the main contact carrier or on the pre-charging contact carrier.
- the ferromagnetic plate interacts with the magnet, so that a releasable magnetic coupling is realized in a simple manner.
- the ferromagnetic plate makes it possible to manufacture the main contact carrier completely in a cost-efficient manner by injection molding.
- the ferromagnetic plate itself can be easily attached to the coupling extension, so that the production of the contactor according to the invention is further simplified and more cost-efficient.
- the static main contact and / or the static pre-charging contact and / or the main contact bridge and / or the pre-charging contact bridge are each provided with a contact plate.
- the contact plate is formed from a material capable of burning under the action of an arc.
- the coupling extension and the recess in the switching chamber component on a manufacturing tolerance, so that adjusts an edge clearance between them.
- the marginal clearance makes it possible to ensure a guidance of the coupling extension and at the same time to simplify the assembly.
- a small distance between the edge of the recess and the coupling extension prevents the coupling extension from being excessively inclined during operation.
- a high distance between the edge of the recess and the coupling extension ensures that during assembly of the inventive contactor the main contact carrier and the switching chamber component can be handled with a low precision.
- the production of the contactor according to the invention is simplified and accelerated and increases the reliability of the contactor.
- the contactor according to the invention can also be designed multipolar and be provided with a plurality of main contact bridges and Vorlademindmaschinen.
- the number of main contact bridges preferably corresponds to the number of precharge contact bridges, one main contact each being connected via a resistance wire to a precharging contact.
- the solution according to the invention is applicable to contactors of any size.
- the contactor is designed as a motor contactor, as a capacitor contactor or as an auxiliary contactor.
- the contactor according to the invention can thus be used for a wide range of uses.
- the switching cabinet according to the invention has assembly stations which are designed to serve as a mechanical and electrical connection for a large number of switching devices and the at least one contactor.
- the switchgear housed in the control cabinet and the at least one contactor serve for control and safety functions of sensors and actuators in one machine.
- the front parts of the switching devices and contactors have a distance from the mounting place, which is also referred to as installation depth.
- the at least one contactor according to one of the embodiments described above is formed and has an installation depth which is identical to the installation depth of the other switching devices in the control cabinet. As a result, the inventive Kunststoff EN thus has a reduced depth. Additional space in the cabinet, which was previously required to accommodate larger capacitor contactors, is saved in the control cabinet according to the invention.
- FIG. 1 schematically a contactor 10 according to the invention is shown in cross section.
- the contactor 10 comprises a housing 12, to which a bottom 16, a front part 17 and a side wall 14 belongs.
- the side wall 14 substantially encloses the switching mechanism of the contactor 10 and the front part 17 forms the surface of the contactor 10, which faces an operator in operation.
- a fastening device 18 is arranged, which is adapted to mount the contactor 10 at a mounting location, not shown, for example, a DIN rail.
- a laminated core 49 is mounted inside the housing 12, which is provided with a magnetic coil 48.
- a magnetic force is generated, which acts on a second-off ferromagnetic armature 46 of a main contact carrier 40.
- the magnetic force between the magnet coil 48 with the laminated core 49 and the ferromagnetic armature 46 ensures during operation of the contactor 10 closing and holding a main contact bridge 24.
- a static main contact 20 is fixedly connected to the side wall 14 of the housing 12, which is designed to to make a conductive connection with the main contact bridge 24.
- the conductive connection forms the main contact.
- the main contact bridge 24 is connected by a fastening means 44 with a main contact carrier 40 which is movably received in the housing 12 along a stroke direction 62.
- a contact region 26, on the static main contacts 20, which is arranged opposite a portion of the main contact bridge 24, is provided with a contact plate, over which flows at a closing of the main contact electric current.
- the main contact carrier 40 further includes a projection 42 on which the main contact bridge 24 is resiliently secured. Adjacent to the main contact bridge 24 and the projection 42, a coupling projection 41 is formed, which is integrally formed on the main contact carrier 40. As a result, actuation of the solenoid 48 causes movement of the coupling extension 41 with the main contact back support 40 and the main contact bridge 24 out.
- the coupling extension 41 is additionally provided with a ferromagnetic plate 43, which is adapted to produce a releasable magnetic coupling with a magnet 54.
- a switching chamber component 55 is further arranged, which is fixedly connected to the housing 12.
- the switching chamber component 55 essentially has a trough shape with a bottom section 56 and an adjacent contact wall 59.
- static pre-charging contacts 30 are fixed, which cooperate with Vorlademindmaschinen 34.
- the static precharging contacts 30 with the precharging contact bridges 34 form the precharging contacts.
- the bottom portion 56 is an in FIG. 2 formed recess 60 through which the coupling projection 41 projects through and extends into the trough shape of the switching chamber component 55.
- the coupling projection 41 with the ferromagnetic plate 43 is releasably coupled to the magnet 54 which is attached to a precharge contact carrier 50.
- the coupling projection 41 extends on the side of the bottom portion 56 which faces the precharge contact carrier 50.
- the precharge contact carrier 50 is movably received in the housing 12 along the stroke direction 62 and includes a spring carrier 52 to which a precharge contact spring 36 is attached.
- the precharge contact spring 36 biases the precharge contact bridge 34 with a spring force that presses the precharge contact bridge 34 against the static precharge contacts 30.
- the spring carrier 52 of the precharge contact carrier 50 is also provided with a control piece 58.
- FIG. 2 is in an oblique view, the switching mechanism of the contactor 10 of the invention FIG. 1 with the omission of the housing 12 and the magnetic coil 48 with the laminated core 49 shown.
- FIG. 2 the main contact carrier 40, which is movable along a stroke direction 62.
- static main contacts 20 are arranged, which are attached to a connecting section 22 on a side wall 14 of the housing 12.
- the static Main contacts 20 are provided with contact plates 28 which form contact surfaces 26 together with further contact plates 28 on the main contact bridges 24.
- the main contact bridges 24 are connected via fastening means 44 to the main contact carrier 40 elastically.
- the main contact carrier 40 has a plurality of partitions 45 which divide a precharge contact carrier 50 facing side of the main contact carrier 40 into a plurality of main contact cells 47.
- partitions 45 on the main contact carrier 40 each have a coupling extension 41, which is formed integrally with the respective partition wall, and consequently also integrally with the main contact carrier 40.
- the coupling projection 41 extends through a recess 60 formed in the bottom portion 56 of the switching chamber component 55.
- the switching chamber component 55 is connected via its contact walls 59 fixed to the housing 12 of the contactor 10, and remains stationary during the operation of the contactor 10.
- the space between the main contact bridges 24 and the bottom 57 of the bottom portion 56 of the switching chamber component 55 is increased or decreased in a movement of the main contact carrier 40 along the stroke direction 62.
- the movement of the precharge contact carrier 50 along the stroke direction 62 is limited by a stop surface 39 which is formed on the bottom portion 56 of the switching chamber component 55.
- the precharge contact bridges 34 and the static precharge contacts 30 are each provided with contact pads 28 which, pressed together, define the contact surface 26.
- the Vorladeuttonippofeder 38 is fixed on the floating of the precharge contact carrier 50 is mounted.
- the precharge contact carrier 50 is integrally formed and includes a plurality of partitions 70 that divide the precharge contact carrier 50 into precharge contact cells 72. In each case a precharge contact cell 72 is a Vorlade.zellen 36 a Vorladeutton Kunststoff 34 floatingly mounted.
- the precharge contact bridge springs 36 are each secured to a spring carrier 52 connecting the partitions 70 of the precharge contact carrier 50. Thereby, the precharge contact springs 36 define one FIG. 3 and 4 Further illustrated fürweg 68 of Vorladeuttonikis 50. On spring support 52, a control piece 58 is further formed.
- the precharge contact carrier 50 is provided with a magnet 54, which is arranged on a lower side of the precharge contact carrier 50.
- the magnet 54 is configured to make a magnetic coupling with the ferromagnetic plate 43 attached to the coupling extension 41 so that the precharge contact carrier 50 is kinematically coupled to the main contact carrier 40.
- the magnetic holding force between the magnet 54 and the ferromagnetic plate 43, the combined spring forces of the Vorladeuttonarmefeder 38 and the Vorlademindfedern 36 upon actuation of the contactor 10 are opposite.
- the individual pre-charge contact springs 36 and the pre-charge contact carrier spring 38 behave like cascaded springs.
- FIG. 3 shows the starting position of the contactor 10 when both its precharging contacts with the static precharging contacts 30 and the Vorladeutton Wegn 34 and its main contacts with the static main contacts 20 and the main contact bridges 24 are open.
- FIG. 3 The situation according to FIG. 3 occurs before an actuation operation of the contactor 10 according to the FIG. 1 and 2 is initiated.
- magnetic coil 48 is deactivated and the contact pads 28 on the static auxiliary and main contacts 30, 20 separated from the auxiliary and main contact bridges 24, 34.
- Magnetic coupling is provided between the magnet 54 and the ferromagnetic plate 43 attached to the end of the coupling projection 41, so that the movement of the main contact carrier 40 along the stroke direction 62 is coupled to the movement of the precharge contact carrier 50.
- the Vorladeuttonfedern 36 relaxed and on the Vorlade didacticangofeder 38 the switching chamber component 55 is floatingly mounted at its bottom portion 56.
- the coupling projection 41 with the ferromagnetic plate 43 extends through the recess 60, which is formed in the bottom portion 56, so that the main contact carrier 40 can move freely along the stroke direction 62.
- the passage 68 of the precharge contact spring 36 is defined.
- the precharge contact carrier 50 When the precharge contact carrier 50 is actuated, the precharge contacts 30 pass through a precharge contact stroke 64 corresponding to the distance between the precharge contact bridges 34 and the static precharge contacts 30.
- an electrically conductive connection is made to the static precharge contacts 30 by the precharge contact bridges 34 and the precharge contact carrier 50 moves further along the stroke direction 62, the precharge contact spring 36 is compressed.
- the combined movement of the precharge contact carrier 50 along the precharge contact stroke 64 and the throughpressure path 68 corresponds to an extension of the precharge contact bridge 34 and the spring carrier 52 Working strokes 65.
- the working stroke 65 lies between the underside 57 of the bottom portion 56 of the switching chamber component 55 and the main contact bridge 24.
- the height of the main contact stroke 66 between the main static contacts 20 and the main contact bridge decreases 24 is formed.
- the height of the main contact stroke 66 becomes zero, there is an electrically conductive connection between the contact pads 28 on the static main contacts 20 and the main contact bridge 24.
- the height of the working stroke 65 is reduced due to the elastic mounting of the main contact bridges 24.
- the working stroke 65 is in the area defined by the bottom 57 of the bottom portion 56 and the main contact bridge 24.
- the space given by the main contact cell 47 defined by partitions 45 is better utilized, so that the contactor 10 is designed to save space along the stroke direction 62.
- FIG. 4 the position of the components of the switching mechanism of the contactor 10 is shown, which after an actuation process starting from the in FIG. 3 adjusted starting position.
- FIG. 4 is between the main contact bridge 24 and the static main contacts 20 via contact pads 28 before an electrically conductive connection.
- the contact plates 28 define a contact plane 26 on a respective static main contact 20.
- the main contact stroke 66 is in accordance with FIG FIG. 3 in FIG. 4 a height of zero and is not shown in detail.
- the working stroke 65 between the main contact bridge 24 and the bottom 57 of the bottom portion 56 of the switching chamber component 55 has its maximum Height up.
- the main contact carrier 40 is held in position via the magnetic coil 48, not shown, so that the electrically conductive connection to the static main contacts 20 is permanently ensured.
- the partition walls 45 which define a plurality of main contact cells 47 on the main contact carrier 40, each extend with their coupling extension 41 through the recess 60 in the bottom section 56.
- the end of the coupling extension 41 which is provided with the ferromagnetic plate 43, is located on the Vorladeuttonango 50 facing side of the bottom portion 56. Opposite the coupling extension 41 of the precharge contact carrier 50 is arranged, which is pushed away from the Vorladeromelatifeder 38 from the bottom portion 56.
- the magnetic force between the magnet 54 and the ferromagnetic plate 43 is significantly lower than the spring force of the precharge contact carrier spring 38.
- the spring force of the precharge contact carrier spring 38 causes a floating mounting of the precharge contact carrier 50 FIG. 4 Between the precharge contact bridges 34 and the static precharge contacts 30, which are attached to the contact wall 59 of the switching chamber component 55, there is a precharge contact stroke 64. Further, between the precharge contact carrier 34 and the spring carrier 52 of the precharge contact carrier 50, a pressurized path 68 is present. The precharge contact bridge 34 is fastened to the spring carrier 52 with a precharge contact spring 36.
- FIG. 5 shows in a detailed view of the magnetic coupling with the magnet 54 and provided with the ferromagnetic plate 43 coupling projection 41 in the coupled state.
- the coupled state corresponds to a starting position of the contactor 10 according to FIG. 3 .
- the coupling extension 41 extends through the recess 60 which in the bottom portion 56 of Switching chamber component 55 is formed and is located substantially between the precharging contacts 20 occupied with contact pads 28 and the bottom portion 56.
- the coupling projection 41 is located with the ferromagnetic plate 43 on the Vorladeromeriad 50 side facing the bottom portion 56.
- the magnet 54 on Vorladeromethe 50 sticks out of this.
- the precharge contact carrier spring 38 is also arranged, on which the precharge contact carrier 50 is mounted in a floating manner.
- FIG. 5 The Vorlade.forementioned herein with the unspiked Vorlade.federn 36, which are arranged between partitions 70 of the Vorlade.the 50, a compressive force which is opposite to the magnetic force between the magnet 54 and the ferromagnetic plate 43 opposite.
- the precharge contact carrier 50 follows the main contact carrier 40.
- the precharge contact carrier 50 reaches the abutment surface 39, the magnetic coupling between the magnet becomes 54 and the ferromagnetic plate 43 solved. This sets a position of the components, as in FIG. 6 displayed.
- FIG. 6 schematically shows the dissolved magnetic coupling in the contactor 10 between the magnet 54 and the coupling projection 41 with the ferromagnetic plate 43 in a detailed view.
- the dissolved magnetic coupling stands out FIG. 5 characterized in that between the pre-charging contact carrier 50 and the ferromagnetic plate 43, a distance is formed, which corresponds to a spring travel 61 of the pre-charging contact carrier spring 38.
- the precharge contact carrier spring 38 disposed between the precharge contact carrier 50 and the bottom portion 56 of the switching chamber component 55 takes in FIG. 6 an equilibrium position which is established by the floating mounting of the precharge contact carrier 50 on the switching chamber component 55.
- the coupling projection 41 is formed on the partition wall 45 on the main contact carrier 40 and is located with the ferromagnetic plate 43 on the side of the bottom portion 56 which faces the precharge contact carrier 50. In this case, the coupling projection 41 extends through the recess 60, which is formed in the bottom portion 56 of the switching chamber component 55.
- the holding force applied to the main contact carrier 40 by the unillustrated solenoid 48 is so high that the main contact carrier 40 for the precharge contact carrier 50 is substantially a fixed abutment, so that the precharge contact carrier 50 can move independently of the main contact carrier 40 along the stroke direction 62.
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Description
Die Erfindung betrifft ein Schütz, das über Haupt- und Vorladekontakte verfügt und dazu ausgebildet ist, durch abgestimmtes Schließen und Öffnen der Haupt- und Vorladekontakte hohe Leistungen lichtbogenvermeidend zu schalten. Der erfindungsgemäße Schütz ist dabei kompakt und einfach zu fertigen. Ferner betrifft die Erfindung einen Schaltschrank, in dem neben einer Vielzahl von Schaltgeräten auch mindestens ein erfindungsgemäßes Schütz eingebaut ist, das die gleiche Einbautiefe aufweist wie die anderen Schaltgeräte.The invention relates to a contactor, which has main and Vorladekontakte and is designed to switch high power arc-avoiding by coordinated closing and opening of the main and Vorladekontakte. The contactor according to the invention is compact and easy to manufacture. Furthermore, the invention relates to a control cabinet, in which in addition to a variety of switching devices and at least one contactor according to the invention is installed, which has the same installation depth as the other switching devices.
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Die Druckschrift
Aus
Ein Nachteil der bekannten Schütze besteht darin, dass deren mechanischer Aufbau viel Platz erfordert. Dadurch kann bei einer Vielzahl an Baugrößen von Schützen die Standardeinbautiefe von anderen Schaltgeräten in einem Schaltschrank nicht eingehalten werden. Angesichts steigender Komplexität jeglicher Art von Maschinen nimmt die Anzahl an Schützen in einem Schaltschrank zu, so dass die Zielsetzung besteht, Schütze zu verkleinern. Des Weiteren basieren die aus dem Stand der Technik bekannten Lösungen darauf, dass geometrisch komplexe Komponenten eingesetzt werden. Die Herstellung und Handhabung von derart komplexen Komponenten ist einer schnellen und effizienten Herstellung von Schützen abträglich. Der Erfindung liegt die Aufgabe zugrunde, einen verbesserten Schütz bereitzustellen, der die Nachteile aus dem Stand der Technik überwindet. Eine weitere Aufgabe besteht darin, einen Schaltschrank bereitzustellen, der bauraumsparend mit Schaltgeräten und Schützen bestückt ist.A disadvantage of the known contactors is that their mechanical structure requires a lot of space. As a result, with a large number of sizes of contactors, the standard mounting depth of other switching devices in a control cabinet can not be complied with. In view of the increasing complexity of any kind of machines, the number of contactors in a control cabinet is increasing, so that the goal is to reduce contactors. Furthermore, the solutions known from the prior art are based on the fact that geometrically complex components are used. The manufacture and handling of such complex components is detrimental to rapid and efficient manufacture of shooters. The invention has for its object to provide an improved contactor, which overcomes the disadvantages of the prior art. Another object is to provide a cabinet that is space-saving equipped with switching devices and contactors.
Die Aufgabenstellung wird durch das erfindungsgemäße Schütz gemäß dem unabhängigen Anspruch 1 und dessen weiteren Ausführungsformen gemäß den abhängigen Ansprüchen 2 bis 12 gelöst. Ferner wird die Aufgabenstellung durch einen Schaltschrank gemäß dem unabhängigen Anspruch 13 gelöst. Das erfindungsgemäße Schütz umfasst einen Hauptkontaktträger, der in einem Gehäuse des Schützes beweglich aufgenommen ist. An dem Hauptkontaktträger ist mindestens eine Hauptkontaktbrücke angebracht, die in einer Hauptkontaktzelle angeordnet ist. Mittels des Hauptkontaktträgers wird der Hauptkontakt im Schütz geschaltet. Das erfindungsgemäße Schütz weist ferner einen Vorladekontaktträger auf, der mit mindestens einer Vorladekontaktbrücke versehen ist. Benachbart zum Vorladekontaktträger ist eine Schaltkammerkomponente im Schütz angebracht, an der ein statischer Vorladekontakt befestigt ist. Die Vorladekontaktbrücke ist dazu ausgebildet, den statischen Vorladekontakt zu schließen und dadurch einen Vorladekontakt herzustellen. Zwischen der Schaltkammerkomponente und dem Vorladekontaktträger ist eine Vorladekontaktträgerfeder angeordnet, so dass der Vorladekontaktträger an der Schaltkammerkomponente elastisch aufgenommen ist. Der Vorladekontaktträger ist mittels eines Magneten mit einem Kopplungsfortsatz am Hauptkontaktträgers lösbar verbindbar. Bei einer Betätigung des erfindungsgemäßen Schützes erfolgt das Lösen der magnetischen Kopplung am Magneten, wenn der Hauptkontakt geschlossen wird und der Vorladekontakt zu öffnen ist.
Eine direkte lösbare Kopplung zwischen dem Hauptkontaktträger und dem Vorladekontaktträger erlaubt es, die Schaltmechanik des erfindungsgemäßen Schützes platzsparend herzustellen, so dass die Einbautiefe des Schützes verringert werden kann. Auch bei Schützen hoher Baugrößen kann dadurch eine standardisierte Einbautiefe eingehalten werden. Ferner weist der Vorladekontaktträger beim erfindungsgemäßen Schütz eine einfache Geometrie auf. Auf komplexe mehrteilige Vorladekontaktträger, die in sich Kopplungsmechanismen aufweisen, kann verzichtet werden. Der Vorladekontaktträger weist aufgrund seiner einfachen Geometrie eine reduzierte Anzahl an Maßen auf, bei denen zur Gewährleistung der Betätigungspräzision des Schützes geringe Toleranzen einzuhalten sind. Eine Verkettung von Fertigungstoleranzen, die für eine ausreichende Betätigungspräzision notwendig sind, wie sie bei mehrteiligen Vorladekontaktträgern üblich ist, entfällt. Hierdurch wird insgesamt die Fertigung des erfindungsgemäßen Schützes weiter vereinfacht.The task is solved by the contactor according to the invention according to independent claim 1 and its further embodiments according to the dependent claims 2 to 12. Furthermore, the task is solved by a control cabinet according to independent claim 13. The contactor according to the invention comprises a main contact carrier, which is movably received in a housing of the contactor. At least one main contact bridge, which is arranged in a main contact cell, is attached to the main contact carrier. The main contact in the contactor is switched by means of the main contact carrier. The contactor according to the invention further comprises a pre-charging contact carrier, which is provided with at least one Vorladekontaktbrücke. Adjacent to the precharge contact carrier is a switching chamber component mounted in the contactor to which a static precharge contact is attached. The precharge contact bridge is configured to close the static precharge contact, thereby establishing a precharge contact. Between the switching chamber component and the precharge contact carrier, a precharge contact carrier spring is arranged, so that the precharge contact carrier is elastically received on the switching chamber component. The precharge contact carrier is releasably connectable by means of a magnet with a coupling extension on the main contact carrier. Upon actuation of the contactor according to the invention, the release of the magnetic coupling takes place on the magnet when the main contact is closed and the precharge contact is open.
A direct releasable coupling between the main contact carrier and the pre-charging contact carrier makes it possible to save space in the switching mechanism of the contactor according to the invention, so that the installation depth of the contactor can be reduced. Even with shooters of large sizes, a standardized installation depth can be maintained. Furthermore, the precharge contact carrier in the contactor according to the invention has a simple geometry. On complex multipart precharge contact carriers, which have coupling mechanisms in themselves, can be dispensed with. The precharge contact carrier has due to its simple geometry to a reduced number of dimensions, which are to be maintained to ensure the operating precision of the contactor low tolerances. A concatenation of manufacturing tolerances, which are necessary for sufficient operating precision, as is common in multi-part pre-charging contact carriers, is eliminated. As a result, the overall production of the contactor according to the invention is further simplified.
Beim erfindungsgemäßen Schütz kann ferner auf einer Seite der Schaltkammerkomponente eine Anschlagfläche ausgebildet sein.
Die Anschlagfläche ist dabei vorzugsweise ein Bereich auf einer dem Vorladekontaktträger zugewandten Seite eines Bodenabschnitts der Schaltkammerkomponente. Bei einer Betätigung des Schützes wird der Vorladekontaktträger an den Bodenabschnitt der Schaltkammerkomponente herangefahren bis der Vorladekontaktträger mit der Anschlagfläche in Kontakt tritt. Dabei wirken auf die magnetische Kopplung zwischen dem Vorladekontaktträger und den Hauptkontaktträger die Betätigungskraft infolge einer Magnetspule und eine durch das Anschlagen hervorgerufene Reaktionskraft der Schaltkammerkomponente. Das Anschlagen tritt unmittelbar nach einem Schließen des Hauptkontakts ein. Die Reaktionskraft übersteigt beim Anschlagen die Haltekraft, die der Magnet zwischen dem Hauptkontaktträger und dem Vorladekontaktträger ausübt, so dass die magnetische Kopplung am Magneten gelöst wird. Infolge der Federkraft der Vorladekontaktträgerfeder wird der Vorladekontaktträger danach in eine Position bewegt, in der der Vorladekontakt offen ist. Hierdurch wird in zuverlässiger Weise eine Abkopplung bei einem Schaltvorgang gewährleistet, so dass nach einem Schließen eines Hauptkontaktes der Vorladekontakt selbsttätig geöffnet wird und der Schaltvorgang abgeschlossen wird.In the contactor according to the invention may further be formed on one side of the switching chamber component a stop surface.
The stop surface is preferably an area on a side of a bottom portion of the switching chamber component facing the precharge contact carrier. Upon actuation of the contactor, the precharge contact carrier is moved up to the bottom portion of the switching chamber component until the precharge contact carrier comes into contact with the stop surface. In this case act on the magnetic coupling between the precharge contact carrier and the main contact carrier, the actuating force due to a solenoid coil and caused by the striking reaction force of the switching chamber component. The impact occurs immediately after closing the main contact. The reaction force when struck exceeds the holding force that the magnet exerts between the main contact carrier and the precharge contact carrier so that the magnetic coupling on the magnet is released. Due to the spring force of the precharge contact carrier spring, the precharge contact carrier is then moved to a position where the precharge contact is open. In this way, a decoupling in a switching operation is ensured in a reliable manner, so that after closing a main contact of the pre-charging is opened automatically and the switching operation is completed.
In einer bevorzugten Ausführungsform des erfindungsgemäßen Schützes ist der Kopplungsfortsatz einstückig mit einer Trennwand ausgebildet, die die mindestens eine Hauptkontaktzelle begrenzt. Der Kopplungsfortsatz ist dabei als Endbereich der Trennwand ausgebildet, der dem Vorladekontaktträger zugewandt ist und stellt dadurch eine Verlängerung der Trennwand dar. Die einstückige Form des Kopplungsfortsatzes mit der Trennwand stellt eine bauteilsparende und einfach herzustellende Variante des erfindungsgemäßen Schützes dar. In einer alternativen bevorzugten Ausführungsform der Erfindung ist der Kopplungsfortsatz an einer Strebe angeordnet, die mindestens zwei Trennwände im Hauptkontaktträger miteinander verbindet. Die Strebe umschließt mit je zwei Trennwänden eine Hauptkontaktzelle. Damit steht eine weitere Möglichkeit zur Verfügung, wo der Kopplungsfortsatz im Schütz angeordnet werden kann. Ein Kopplungsfortsatz, der mit der Strebe verbunden ist, kann konstruktiv an einer Vielzahl von Stellen am Hauptkontaktträger positioniert werden, so dass der erfindungsgemäße Schütz an unterschiedlich ausgebildete Vorladekontaktträger angepasst werden kann. Hierdurch wird insgesamt die Skalierbarkeit des erfindungsgemäßen Schützes verbessert.In a preferred embodiment of the contactor according to the invention, the coupling extension is formed integrally with a partition which delimits the at least one main contact cell. The coupling extension is formed as the end region of the partition, which is the pre-charge contact carrier The one-piece shape of the coupling extension with the partition represents a component-saving and easy-to-manufacture variant of the contactor according to the invention. In an alternative preferred embodiment of the invention, the coupling extension is arranged on a strut, the at least two partitions in the main contact carrier connects to each other. The strut encloses a main contact cell with two partitions each. This provides another possibility where the coupling extension can be arranged in the contactor. A coupling extension, which is connected to the strut, can be structurally positioned at a plurality of locations on the main contact carrier, so that the contactor according to the invention can be adapted to differently configured precharge contact carriers. This overall improves the scalability of the contactor according to the invention.
Der Hauptkontaktträger kann im erfindungsgemäßen Schütz einen Kopplungsfortsatz aufweisen, der sich durch eine Ausnehmung in der Schaltkammerkomponente erstreckt. Der Hauptkontaktträger ist in einfacher Weise herstellbar, wobei für die Kinematik und Betätigungspräzision des erfindungsgemäßen Schützes die Lage des Endes des Kopplungsfortsatzes in Bezug auf eine Hubrichtung relevant ist. Ferner wird durch den Kopplungsfortsatz, der sich durch die Ausnehmung in der Schaltkammerkomponente erstreckt, weiter Platz eingespart. Auch die Schaltkammerkomponente weist eine einfach zu fertigende Form auf. Insgesamt weist der erfindungsgemäße Schütz gegenüber den aus dem Stand der Technik bekannten Lösungen eine reduzierte Komplexität auf, wobei die Bauteile des Schützes selbst mit reduziertem Aufwand herstellbar sind. Dabei ist der Schütz ferner besonders platzsparend gebaut. In einer besonders bevorzugten Ausführungsform der Erfindung weist die Ausnehmung eine umlaufende Umrandung auf. Die Ausnehmung ist dabei im Wesentlichen als Öffnung in im Bodenabschnitt der Schaltkammerkomponente ausgebildet. In einer alternativen Ausführungsform der Erfindung weist die Umrandung der Ausnehmung Endpunkte auf und ist als Materialaussparung am Rand des Bodenabschnitts der Schaltkammerkomponente ausgebildet.The main contact carrier may have a coupling extension in the contactor according to the invention, which extends through a recess in the switching chamber component. The main contact carrier can be produced in a simple manner, with the position of the end of the coupling extension in relation to a stroke direction being relevant for the kinematics and operating precision of the contactor according to the invention. Furthermore, space is further saved by the coupling extension, which extends through the recess in the switching chamber component. The switching chamber component also has an easy-to-manufacture form. Overall, the contactor according to the invention has a reduced complexity compared to the solutions known from the prior art, wherein the components of the contactor can be produced even with reduced effort. The contactor is also built to save space. In a particularly preferred embodiment of the invention, the recess has a peripheral border. The recess is formed substantially as an opening in the bottom portion of the switching chamber component. In an alternative embodiment of the invention, the border of the recess End points and is formed as a material recess at the edge of the bottom portion of the switching chamber component.
In einer weiteren bevorzugten Ausführungsform der Erfindung ist die Schaltkammerkomponente fest mit einem Gehäuse des Schützes verbunden. Das ohnehin vorhandene Gehäuse dient in der Kinematik des Schützes als Fixpunkt für die Schaltkammerkomponente, und damit auch als Fixierung für die bei einem Schaltvorgang zu durchlaufenden Bewegungen des Vorladekontaktträgers. Die Schaltkammerkomponente ist damit ein Ankerpunkt für die Kinematik des Vorladekontaktträgers und des Hauptkontaktträgers. Hierdurch wird die Schaltmechanik des Vorladekontakts kompakt mit dem Hauptkontaktträger gekoppelt.In a further preferred embodiment of the invention, the switching chamber component is firmly connected to a housing of the contactor. The already existing housing is used in the kinematics of the contactor as a fixed point for the switching chamber component, and thus also as a fixation for the case of a switching operation to be traversed movements of Vorladekontaktträgers. The switching chamber component is thus an anchor point for the kinematics of the precharging contact carrier and the main contact carrier. As a result, the switching mechanism of the precharge contact is compactly coupled to the main contact carrier.
Beim erfindungsgemäßen Schütz kann ferner zwischen dem Bodenabschnitt der Schaltkammerkomponente und dem beweglichen Hauptkontaktträger ein Arbeitshub ausgebildet sein, entlang dem der Hauptkontaktträger bewegt werden kann. Der im Schütz vorhandene Bauraum wird dadurch stärker ausgenutzt, so dass die Einbautiefe des Schützes weiter minimiert werden kann.In the contactor according to the invention may further be formed between the bottom portion of the switching chamber component and the movable main contact carrier, a working stroke along which the main contact carrier can be moved. The available space in the contactor is thereby exploited more, so that the installation depth of the contactor can be further minimized.
In einer bevorzugten Ausführungsform der Erfindung ist der Hauptkontaktträger mit einem ferromagnetischen Anker ausgestattet, der mittels einer Magnetspule, die im Bereich des Bodens des Gehäuses angeordnet ist, entlang einer Hubrichtung des Hauptkontaktträgers bewegt werden kann. Die Magnetspule dient auch dazu, bei geschlossenen Hauptkontakten den Hauptkontaktträger in der entsprechenden Position zu halten. Eine Magnetspule stellt ein zuverlässiges Mittel dar, um elektrisch gesteuert eine Betätigung des Schützes hervorzurufen. Des Weiteren kann beim erfindungsgemäßen Schütz der Vorladekontaktträger einstückig ausgebildet sein. Der einstückige Vorladekontaktträger umfasst dabei mindestens eine Hilfskontaktzelle, die durch Trennwände begrenzt ist. Zwischen den Trennwänden am Vorladekontaktträger ist dabei vorzugsweise ein Federträger ausgebildet, an dem eine Vorladekontaktfeder gelagert werden kann. Besonders bevorzugt ist der einstückige Vorladekontaktträger symmetrisch ausgebildet, so dass ein Einbau in mehreren Orientierungen und Einbaulagen möglich ist. Der einstückige Vorladekontaktträger kann beispielsweise als Spritzgussteil schnell und kosteneffizient hergestellt werden. Ein komplexer Montageschritt wie bei einem mehrteiligen Vorladekontaktträger, der in sich einen Kopplungsmechanismus aufweist, entfällt. Ferner wird durch eine symmetrische Form des Vorladekontaktträgers eine maschinelle Handhabung der Einzelkomponenten bei der Montage erleichtert, so dass hierdurch die Kosteneffizienz weiter gesteigert wird.In a preferred embodiment of the invention, the main contact carrier is provided with a ferromagnetic armature, which can be moved by means of a magnetic coil, which is arranged in the region of the bottom of the housing, along a stroke direction of the main contact carrier. The solenoid also serves to hold the main contact carrier in the appropriate position when the main contacts are closed. A solenoid provides a reliable means of electrically actuating actuation of the contactor. Furthermore, in the contactor according to the invention, the pre-charging contact carrier can be formed in one piece. The one-piece Vorladekontaktträger thereby comprises at least one auxiliary contact cell, which is limited by partitions. Between the partitions on Vorladekontaktträger a spring carrier is preferably formed, on which a Vorladekontaktfeder can be stored. Particularly preferably, the one-piece Vorladekontaktträger is formed symmetrically, so that a Installation in several orientations and mounting positions is possible. The one-piece Vorladekontaktträger can be made for example as an injection molded part quickly and cost-effectively. A complex assembly step as in a multi-part precharge contact carrier, which has a coupling mechanism in itself, is eliminated. Furthermore, a mechanical handling of the individual components during assembly is facilitated by a symmetrical shape of the precharging contact carrier, thereby further increasing cost efficiency.
In einer weiter bevorzugten Ausführungsform der Erfindung ist zwischen einer Vorladekontaktbrücke und dem Vorladekontaktträger eine Vorladekontaktbrückenfeder angeordnet, die einen Federweg aufweist. Der Federweg der Vorladekontaktbrückenfeder definiert einen Durchdruckweg des Vorladekontaktträgers, wenn bei einer Betätigung des Schützes die Vorladekontakte bereits geschlossen sind, jedoch noch nicht die Hauptkontakte. Wenn die Vorladekontaktbrücken die statischen Vorladekontakte berühren, bewegt sich der mit dem Vorladekontaktträger verbundene Hauptkontaktträger weiter in Richtung einer Schließposition der Hauptkontaktbrücken. Durch die mechanische Kopplung des Hauptkontaktträgers mit dem Vorladekontaktträger wird der Vorladekontaktträger dazu gezwungen, seine Hubbewegung fortzusetzen. Dabei ist die Vorladekontaktbrücke über die Vorladekontaktbrückenfeder elastisch gelagert und bewegt sich relativ zum Vorladekontaktträger. Die relative Bewegung zwischen dem Vorladekontaktträger und der Vorladekontaktbrücke ist der Durchdruckweg des Vorladekontaktträgers.In a further preferred embodiment of the invention, a pre-charging contact bridge spring is arranged between a pre-charging contact bridge and the pre-charging contact carrier, which has a spring travel. The spring travel of Vorladekontaktbrückenfeder defines a Durchdruckweg of Vorladekontaktträgers when the Vorladekontakte are already closed in an actuation of the contactor, but not yet the main contacts. When the precharge contact bridges contact the static precharge contacts, the main contact carrier connected to the precharge contact carrier continues to move toward a closing position of the main contact bridges. The mechanical coupling of the main contact carrier to the precharge contact carrier forces the precharge contact carrier to continue its lifting movement. In this case, the Vorladekontaktbrücke is elastically supported by the Vorladekontaktbrückenfeder and moves relative to the Vorladekontaktträger. The relative movement between the precharge contact carrier and the precharge contact bridge is the pressure path of the precharge contact carrier.
Der erfindungsgemäße Schütz kann eine ferromagnetische Platte aufweisen, die am Kopplungsfortsatz am Hauptkontaktträger oder am Vorladekontaktträger angeordnet ist. Die ferromagnetische Platte tritt mit dem Magneten in Wechselwirkung, so dass in einfacher Weise eine lösbare magnetische Kopplung verwirklicht wird. Die ferromagnetische Platte erlaubt es, den Hauptkontaktträger komplett in kosteneffizienter Weise im Spritzgussverfahren herzustellen. Die ferromagnetische Platte selbst kann in einfacher Weise am Kopplungsfortsatz befestigt werden, so dass die Fertigung des erfindungsgemäßen Schützes weiter vereinfacht und kosteneffizienter wird.The contactor according to the invention may comprise a ferromagnetic plate which is arranged on the coupling extension on the main contact carrier or on the pre-charging contact carrier. The ferromagnetic plate interacts with the magnet, so that a releasable magnetic coupling is realized in a simple manner. The ferromagnetic plate makes it possible to manufacture the main contact carrier completely in a cost-efficient manner by injection molding. The ferromagnetic plate itself can be easily attached to the coupling extension, so that the production of the contactor according to the invention is further simplified and more cost-efficient.
In einer weiteren Ausführungsform der Erfindung sind der statische Hauptkontakt und/oder der statische Vorladekontakt und/oder die Hauptkontaktbrücke und/oder die Vorladekontaktbrücke jeweils mit einem Kontaktplättchen versehen. Das Kontaktplättchen ist aus einem unter Lichtbogeneinwirkung abbrandfähigen Material ausgebildet.In a further embodiment of the invention, the static main contact and / or the static pre-charging contact and / or the main contact bridge and / or the pre-charging contact bridge are each provided with a contact plate. The contact plate is formed from a material capable of burning under the action of an arc.
In einer weiteren bevorzugten Ausführungsform der Erfindung weisen der Kopplungsfortsatz und die Ausnehmung in der Schaltkammerkomponente eine Fertigungstoleranz auf, so dass sich dazwischen ein Randspiel einstellt. Das Randspiel erlaubt es, eine Führung des Kopplungsfortsatzes zu gewährleisten und gleichzeitig die Montage zu vereinfachen. So verhindert ein niedriger Abstand zwischen der Umrandung der Ausnehmung und dem Kopplungsfortsatz, dass der Kopplungsfortsatz im Betrieb übermäßig schräg positioniert wird. Ein hoher Abstand zwischen der Umrandung der Ausnehmung und dem Kopplungsfortsatz gewährleistet, dass bei der Montage des erfindungsgemä-ßen Schützes der Hauptkontaktträger und die Schaltkammerkomponente mit einer niedrigen Präzision gehandhabt werden können. Hierdurch wird die Herstellung des erfindungsgemäßen Schützes vereinfacht und beschleunigt und die Zuverlässigkeit des Schützes erhöht.In a further preferred embodiment of the invention, the coupling extension and the recess in the switching chamber component on a manufacturing tolerance, so that adjusts an edge clearance between them. The marginal clearance makes it possible to ensure a guidance of the coupling extension and at the same time to simplify the assembly. Thus, a small distance between the edge of the recess and the coupling extension prevents the coupling extension from being excessively inclined during operation. A high distance between the edge of the recess and the coupling extension ensures that during assembly of the inventive contactor the main contact carrier and the switching chamber component can be handled with a low precision. As a result, the production of the contactor according to the invention is simplified and accelerated and increases the reliability of the contactor.
Das erfindungsgemäße Schütz kann ferner mehrpolig ausgebildet sein und mit einer Mehrzahl an Hauptkontaktbrücken und Vorladekontaktbrücken versehen sein. Dabei entspricht die Anzahl der Hauptkontaktbrücken vorzugsweise der Anzahl der Vorladekontaktbrücken, wobei je ein Hauptkontakt über einen Widerstandsdraht mit einem Vorladekontakt verbunden ist. Die erfindungsgemäße Lösung ist auf Schütze jeglicher Größe anwendbar.The contactor according to the invention can also be designed multipolar and be provided with a plurality of main contact bridges and Vorladekontaktbrücken. In this case, the number of main contact bridges preferably corresponds to the number of precharge contact bridges, one main contact each being connected via a resistance wire to a precharging contact. The solution according to the invention is applicable to contactors of any size.
In einer bevorzugten Ausführungsform der Erfindung ist der Schütz als Motorschütz, als Kondensatorschütz oder als Hilfsschütz ausgebildet. Der erfindungsgemäße Schütz ist damit für ein breites Einsatzspektrum verwendbar.In a preferred embodiment of the invention, the contactor is designed as a motor contactor, as a capacitor contactor or as an auxiliary contactor. The contactor according to the invention can thus be used for a wide range of uses.
Der erfindungsgemäße Schaltschrank weist Montageplätze auf, die dazu ausgebildet sind, als mechanischer und elektrischer Anschluss für eine Vielzahl an Schaltgeräten und den mindestens einen Schütz zu dienen. Die im Schaltschrank aufgenommenen Schaltgeräte und der mindestens eine Schütz dienen für Steuerungs- und Sicherheitsfunktionen von Sensoren und Aktoren in einer Maschine. Die Frontpartien der Schaltgeräte und Schütze weisen dabei einen Abstand vom Montageplatz auf, die auch als Einbautiefe bezeichnet wird. Erfindungsgemäß ist der mindestens eine Schütz gemäß einer der oben beschriebenen Ausführungsformen ausgebildet und weist eine Einbautiefe auf, die identisch mit der Einbautiefe der weiteren Schaltgeräte im Schaltschrank ist. Infolgedessen weist der erfindungsgemä-ße Schaltschrank damit eine verringerte Bautiefe auf. Zusätzlicher Raum im Schaltschrank, der bislang zur Aufnahme von größeren Kondensatorschützen erforderlich war, wird im erfindungsgemäßen Schaltschrank eingespart.The switching cabinet according to the invention has assembly stations which are designed to serve as a mechanical and electrical connection for a large number of switching devices and the at least one contactor. The switchgear housed in the control cabinet and the at least one contactor serve for control and safety functions of sensors and actuators in one machine. The front parts of the switching devices and contactors have a distance from the mounting place, which is also referred to as installation depth. According to the invention, the at least one contactor according to one of the embodiments described above is formed and has an installation depth which is identical to the installation depth of the other switching devices in the control cabinet. As a result, the inventive Schaltschrank thus has a reduced depth. Additional space in the cabinet, which was previously required to accommodate larger capacitor contactors, is saved in the control cabinet according to the invention.
Die Erfindung wird in den folgenden Zeichnungen anhand von einzelnen Ausführungsformen näher beschrieben. Dabei zeigt
- FIG 1
- einen erfindungsgemäßen Schütz im Querschnitt;
- FIG 2
- eine Schrägansicht der Schaltmechanik eines erfindungsgemäßen Schützes;
- FIG 3
- eine Schaltmechanik eines erfindungsgemäßen Schützes bei offenen Kontakten im Querschnitt;
- FIG 4
- eine Schaltmechanik eines erfindungsgemäßen Schützes bei geschlossenem Hauptkontakt im Querschnitt;
- FIG 5
- eine Detailansicht einer geschlossenen Magnetkopplung im erfindungsgemäßen Schütz;
- FIG 6
- eine Detailansicht einer gelösten Magnetkopplung im erfindungsgemäßen Schütz.
- FIG. 1
- a contactor according to the invention in cross section;
- FIG. 2
- an oblique view of the switching mechanism of a contactor according to the invention;
- FIG. 3
- a switching mechanism of a contactor according to the invention with open contacts in cross section;
- FIG. 4
- a switching mechanism of a contactor according to the invention with the main contact closed in cross section;
- FIG. 5
- a detailed view of a closed magnetic coupling in the contactor according to the invention;
- FIG. 6
- a detailed view of a dissolved magnetic coupling in the contactor according to the invention.
In
Der Hauptkontaktträger 40 umfasst ferner einen Vorsprung 42, auf dem die Hauptkontaktbrücke 24 elastisch befestigt ist. Benachbart zur Hauptkontaktbrücke 24 und dem Vorsprung 42 ist ein Kopplungsfortsatz 41 ausgebildet, der an den Hauptkontaktträger 40 angeformt ist. Dadurch ruft eine Betätigung der Magnetspule 48 eine Bewegung des Kopplungsfortsatzes 41 mit dem Hauptkontaktrückenträger 40 und der Hauptkontaktbrücke 24 hervor. Der Kopplungsfortsatz 41 ist zusätzlich mit einer ferromagnetischen Platte 43 versehen, die dazu ausgebildet ist, mit einem Magneten 54 eine lösbare magnetische Kopplung herzustellen.The
Im Gehäuse 12 ist ferner eine Schaltkammerkomponente 55 angeordnet, der fest mit dem Gehäuse 12 verbunden ist. Die Schaltkammerkomponente 55 weist im Wesentlichen eine Wannenform mit einem Bodenabschnitt 56 und einer angrenzenden Kontaktwandung 59 auf. Im Bereich der Kontaktwandung 59 sind statische Vorladekontakte 30 befestigt, die mit Vorladekontaktbrücken 34 zusammenwirken. Dabei bilden die statischen Vorladekontakte 30 mit den Vorladekontaktbrücken 34 die Vorladekontakte. Im Bodenabschnitt 56 ist eine in
In
Der Kopplungsfortsatz 41 erstreckt sich durch eine Ausnehmung 60, die im Bodenabschnitt 56 der Schaltkammerkomponente 55 ausgebildet ist. Die Schaltkammerkomponente 55 ist über seine Kontaktwandungen 59 fest mit dem Gehäuse 12 des Schützes 10 verbunden, und bleibt während der Betätigung des Schützes 10 stationär. Der Raum zwischen den Hauptkontaktbrücken 24 und der Unterseite 57 des Bodenabschnitts 56 der Schaltkammerkomponente 55 wird bei einer Bewegung des Hauptkontaktträgers 40 entlang der Hubrichtung 62 vergrößert oder verkleinert. Die Bewegung des Vorladekontaktträgers 50 entlang der Hubrichtung 62 wird dabei von einer Anschlagfläche 39 begrenzt, die auf dem Bodenabschnitt 56 der Schaltkammerkomponente 55 ausgebildet ist. Bei einem Schließen der Hauptkontakte erreicht der Vorladekontaktträger 50 die Anschlagfläche 39, wobei die Reaktionskraft der Anschlagfläche 39 ein Lösen der magnetischen Kopplung am Magneten 54 hervorruft. An den Kontaktwandungen 59 der Schaltkammerkomponente 55 sind ferner statische Vorladekontakte 30 angeordnet, die bei Betätigung des Schützes zusammen mit den Vorladekontaktbrücken 34 einen Vorladekontakt schließen. Die Vorladekontaktbrücken 34 und die statischen Vorladekontakte 30 sind jeweils mit Kontaktplättchen 28 versehen, die aneinandergedrückt die Kontaktfläche 26 definieren. Auf dem Bodenabschnitt 56 der Schaltkammerkomponente 55 ist die Vorladekontaktträgerfeder 38 befestigt, auf der schwimmend der Vorladekontaktträger 50 gelagert ist. Der Vorladekontaktträger 50 ist einstückig ausgebildet und weist eine Mehrzahl an Trennwänden 70 auf, die den Vorladekontaktträger 50 in Vorladekontaktzellen 72 einteilen. In je einer Vorladekontaktzellen 72 ist über eine Vorladekontaktfeder 36 eine Vorladekontaktbrücke 34 schwimmend gelagert. Die Vorladekontaktbrückenfedern 36 sind jeweils an einem Federträger 52 befestigt, der die Trennwände 70 des Vorladekontaktträgers 50 verbindet. Dadurch definieren die Vorladekontaktfedern 36 einen
Der Magnet 54 ist dazu ausgebildet, eine magnetische Kopplung mit der ferromagnetischen Platte 43 herzustellen, die am Kopplungsfortsatz 41 befestigt ist, so dass der Vorladekontaktträger 50 kinematisch an den Hauptkontaktträger 40 gekoppelt ist. Der magnetischen Haltekraft zwischen dem Magneten 54 und der ferromagnetischen Platte 43 sind die kombinierten Federkräfte der Vorladekontaktträgerfeder 38 und der Vorladekontaktfedern 36 bei einer Betätigung des Schützes 10 entgegengesetzt. Dabei verhalten sich die einzelnen Vorladekontaktfedern 36 und die Vorladekontaktträgerfeder 38 wie hintereinandergeschaltete Federn. Wenn bei einem Schließen des elektrischen Kontakts zwischen den Hauptkontaktbrücken 24 und den statischen Hauptkontakten 20 der Vorladekontaktträger 50 entlang der Hubrichtung 62 zur Schaltkammerkomponente 55 bewegt wird, steigt die kombinierte Federkraft der Vorladekontaktfedern 36 und der Vorladekontaktträgerfeder 38 an, bis durch ein Anschlagen des Vorladekontaktträgers 50 an der Anschlagfläche 39 die magnetische Kopplung am Magneten 54 gelöst wird. Die Vorladekontaktträgerfeder 38 positioniert anschließend den Vorladekontaktträger 50 in einer Lage, in der an den statischen Vorladekontakten 30 durch die Vorladekontaktbrücken 34 keine elektrisch leitende Verbindung vorliegt. Aus
Zwischen der Vorladekontaktbrücke 34 und dem Federträger 52 des Vorladekontaktträgers 50 wird der Durchdruckweg 68 der Vorladekontaktfeder 36 definiert. Wird der Vorladekontaktträger 50 betätigt, durchfahren die Vorladekontakte 30 einen Vorladekontakthub 64, der dem Abstand zwischen den Vorladekontaktbrücken 34 und den statischen Vorladekontakten 30 entspricht. Wenn durch die Vorladekontaktbrücken 34 eine elektrisch leitende Verbindung an den statischen Vorladekontakten 30 hergestellt ist und sich der Vorladekontaktträger 50 weiter entlang der Hubrichtung 62 bewegt, wird die Vorladekontaktfeder 36 zusammengedrückt. Dabei verringert sich der zwischen der Vorladekontaktbrücke 34 und dem Federträger 52 ausgebildete Durchdruckweg 68. Die kombinierte Bewegung des Vorladekontaktträgers 50 entlang des Vorladekontakthubs 64 und des Durchdruckwegs 68 entspricht dabei einer Verlängerung des Arbeitshubs 65. Der Arbeitshub 65 liegt zwischen der Unterseite 57 des Bodenabschnitts 56 der Schaltkammerkomponente 55 und der Hauptkontaktbrücke 24. Zusammen mit der Bewegung des Hauptkontaktträgers 40 entlang des Arbeitshubs 65 verringert sich die Höhe des Hauptkontakthubs 66, der zwischen den statischen Hauptkontakten 20 und der Hauptkontaktbrücke 24 ausgebildet ist. Wenn die Höhe des Hauptkontakthubs 66 zu Null wird, liegt zwischen den Kontaktplättchen 28 an den statischen Hauptkontakten 20 und der Hauptkontaktbrücke 24 eine elektrisch leitende Verbindung vor. Bei einer anschließenden weiteren schließenden Bewegung des Hauptkontaktträgers 40 verringert sich die Höhe des Arbeitshubs 65 aufgrund der elastischen Lagerung der Hauptkontaktbrücken 24.Between the
Der Arbeitshub 65 liegt in dem Bereich vor, der durch die Unterseite 57 des Bodenabschnitts 56 und die Hauptkontaktbrücke 24 definiert ist. Dadurch wird der Raum, der durch die von Trennwänden 45 definierten Hauptkontaktzelle 47 gegeben ist, besser ausgenutzt, so dass das Schütz 10 entlang der Hubrichtung 62 platzsparend ausgebildet ist. Nachdem die elektrische leitende Verbindung an den statischen Hauptkontakten hergestellt ist, erfolgt ein Lösen der magnetischen Kopplung zwischen dem Magneten 54 und dem Kopplungsfortsatz 41. Dadurch stellt sich die in
In
Die Federkraft der Vorladekontaktträgerfeder 38 bewirkt eine schwimmende Lagerung des Vorladekontaktträgers 50. In
In
Claims (13)
- Circuit breaker (10), comprising a movable main contact carrier (40) which has at least one main contact cell (47), and a pre-charge contact carrier (50) which by means of a pre-charge contact carrier spring (38) is elastically accommodated on a switching chamber component (55) with a static pre-charge contact (30), characterised in that the pre-charge contact carrier (50) can be detachably connected directly to a coupling extension (41) on the main contact support (40) by means of a magnet (54), wherein the coupling extension (41) is formed integrally with a dividing wall (45) of the main contact carrier (40) which delimits the at least one main contact cell (47), or is arranged on a strut which connects at least two dividing walls (45) of the main contact support (40) which delimit the at least one main contact cell (47).
- Circuit breaker (10) according to claim 1, characterised in that the switching chamber component (55) has a stop surface (39).
- Circuit breaker (10) according to one of claims 1 or
2, characterised in that a recess (60) is formed in a bottom portion (56) of the switching chamber component (55), through which extends the coupling extension (41). - Circuit breaker (10) according to claim 3, characterised in that the recess (60) has a circumferential border or a border with endpoints.
- Circuit breaker (10) according to one of claims 1 to 4, characterised in that the switching chamber component (55) is fixedly connected to a housing (12) of the circuit breaker (10).
- Circuit breaker (10) according to one of claims 1 to 5, characterised in that the main contact carrier (40) has a ferromagnetic armature (46) which can be moved by means of a magnet coil (48) on a bottom (16) of the housing (12).
- Circuit breaker (10) according to one of claims 1 to 6, characterised in that the pre-charge contact carrier (50) is integrally formed.
- Circuit breaker (10) according to one of claims 1 to 7, characterised in that a pre-charge contact bridge spring (36) is arranged between a pre-charge contact bridge (34) and the pre-charge contact carrier (50), and the spring deflection of the pre-charge contact bridge spring (36) corresponds to a contact resilience deflection (68) of the pre-charge contact carrier (50) on actuation of the pre-charge contact carrier (50).
- Circuit breaker (10) according to one of claims 1 to 8, characterised in that a ferromagnetic plate (43) for detachably coupling with the magnet (54) is arranged on the coupling extension (41).
- Circuit breaker (10) according to one of claims 1 to 9, characterised in that the static pre-charge contacts (30) and/or the main contact carriers (34) and/or the pre-charge contact carriers (24) are each provided with a contact plate (28).
- Circuit breaker (10) according to one of claims 1 to 10, characterised in that the circuit breaker (10) is multipole in design and has a plurality of main contact bridges (24) and pre-charge contact bridges (24).
- Circuit breaker (10) according to one of claims 1 to 11, characterised in that the circuit breaker (10) is designed as a capacitor circuit breaker, motor circuit breaker or auxiliary circuit breaker.
- Switching cabinet, comprising a top-hat rail with a plurality of switching devices and at least one circuit breaker (10) according to one of claims 1 to 12.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14187340.6A EP3002769B1 (en) | 2014-10-01 | 2014-10-01 | Integrated circuit breaker |
CN201520775690.8U CN205303354U (en) | 2014-10-01 | 2015-10-08 | Integrated contactor and cubical switchboard that has this contactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14187340.6A EP3002769B1 (en) | 2014-10-01 | 2014-10-01 | Integrated circuit breaker |
Publications (2)
Publication Number | Publication Date |
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EP3002769A1 EP3002769A1 (en) | 2016-04-06 |
EP3002769B1 true EP3002769B1 (en) | 2017-06-14 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP14187340.6A Active EP3002769B1 (en) | 2014-10-01 | 2014-10-01 | Integrated circuit breaker |
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EP (1) | EP3002769B1 (en) |
CN (1) | CN205303354U (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105977101B (en) * | 2016-05-05 | 2019-01-18 | 厦门宏发开关设备有限公司 | A kind of main contacts and auxiliary contact insulation isolation structure |
EP4233085A1 (en) * | 2020-10-23 | 2023-08-30 | Safran Power USA, LLC | System and method for setting arc gaps on a plurality of auxiliary switches of an electrical contactor |
JP7380608B2 (en) * | 2021-01-22 | 2023-11-15 | 富士電機機器制御株式会社 | Sealed magnetic contactor |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2684797B1 (en) | 1991-12-05 | 1994-03-04 | Telemecanique | MULTIPOLAR SWITCHING DEVICE WITH PARTIALLY FUGITIVE ACTION. |
KR200415843Y1 (en) | 2006-02-16 | 2006-05-08 | 엘에스산전 주식회사 | Auxiliary contact unit of magnatic contactor |
CN202616144U (en) | 2012-01-31 | 2012-12-19 | 上海诺雅克电气有限公司 | Capacitor contactor having bistable current-limiting contact |
EP2775502B1 (en) * | 2013-03-08 | 2017-11-29 | Siemens Aktiengesellschaft | Switching device for switching a capacitor |
-
2014
- 2014-10-01 EP EP14187340.6A patent/EP3002769B1/en active Active
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2015
- 2015-10-08 CN CN201520775690.8U patent/CN205303354U/en active Active
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CN205303354U (en) | 2016-06-08 |
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