EP4068324A1 - Appareil de commutation pourvu de recouvrement avant pouvant être verrouillé - Google Patents

Appareil de commutation pourvu de recouvrement avant pouvant être verrouillé Download PDF

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Publication number
EP4068324A1
EP4068324A1 EP21166318.2A EP21166318A EP4068324A1 EP 4068324 A1 EP4068324 A1 EP 4068324A1 EP 21166318 A EP21166318 A EP 21166318A EP 4068324 A1 EP4068324 A1 EP 4068324A1
Authority
EP
European Patent Office
Prior art keywords
switching device
front cover
switching
locking means
slide
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.)
Pending
Application number
EP21166318.2A
Other languages
German (de)
English (en)
Inventor
Jürgen Mader
Nicolas Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jean Mueller Elektrotechnische Fabrik GmbH
Original Assignee
Jean Mueller Elektrotechnische Fabrik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jean Mueller Elektrotechnische Fabrik GmbH filed Critical Jean Mueller Elektrotechnische Fabrik GmbH
Priority to EP21166318.2A priority Critical patent/EP4068324A1/fr
Publication of EP4068324A1 publication Critical patent/EP4068324A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H01H9/104—Adaptation for built-in fuses with interlocking mechanism between switch and fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/25—Safety arrangements preventing or inhibiting contact with live parts, including operation of isolation on removal of cover
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • H01H9/226—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts the casing containing electrical equipment other than and operated by the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"

Definitions

  • the present invention relates to a switching device.
  • the invention relates in particular to a multi-pole switching device for use on busbar systems.
  • Busbar systems are widely used and allow switching devices to be mounted directly on the busbar when they are installed.
  • the dimensioning of the conductor rails of the busbar system primarily depends on the current load.
  • Several busbars can be laid in parallel in switchgear.
  • the busbars are usually made of aluminum or copper and are usually uninsulated, which simplifies the assembly of connection and switching elements.
  • Switching devices in particular electrical load switches, in particular those with fuses, are used, for example, in industry and power plants both as busbar feeder switches and as outgoing switches for switching highly inductive loads (e.g. motors) including overloads.
  • highly inductive loads e.g. motors
  • the switching device according to the invention is in particular a switching device for use on a busbar system, the switching device covering a current range in which cylindrical fuses are used, for example D0 fuses.
  • the switching device according to the invention can, for example, as a back-up fuse for DIN-rail devices, as Protective device for drives in production facilities and / or in photovoltaic installations are used.
  • a switching device that is designed for use on busbar systems is, for example, from EP 1 246 212 A2 known. Furthermore, the EP 1 271 583 A2 and the EP 2 747 104 B1 Switching devices designed for use on busbar systems.
  • the object of the invention to further develop a switching device in such a way that the live components within the switching device, in particular the receiving areas of the fuses, are only accessible to an operator when the switching device is in a switched-off state, located. This avoids the operator coming into contact with live components of the switching device, particularly when replacing the fuse.
  • the switching device has a housing and at least one switching contact, the switching device having a fuse receptacle assigned to the respective switching contact.
  • the fuse holder is designed in particular to hold a cylindrical fuse, in particular a D0 fuse.
  • the switching device is designed in particular as a load-break switch for a busbar system.
  • the switching device has a front cover mounted in the housing for covering the at least one fuse receptacle on the front when the front cover is in a closed position.
  • the fuse holders of the switching device or fuses stored therein are not accessible to the operator, so that it is not possible to reach into the area of the fuse holder or a fuse stored therein when the front cover is closed.
  • the at least one switching contact can be moved via a switch in the housing mounted slider from a contact position to an open position can be converted and vice versa.
  • the slide is preferably mounted in the housing in a linearly displaceable manner. Such a slide is also referred to as an actuating slide.
  • the slide to have a locking means or for a locking means to interact with the slide, in particular the locking means being displaceable together with the slide.
  • the locking means In the contact position of the switching contact, the locking means locks the front cover when the front cover is in the closed position.
  • the locking means prevents the front cover from being opened.
  • the front cover cannot be opened when the switching device is switched on. This prevents the operator from being able to open the switching device when it is switched on, for example to replace a fuse, and being exposed to the risk of contacting a live component.
  • the design according to the invention ensures that the front cover can only be opened when the switching contact is in an open position, and the switching device is accordingly in a switched-off state.
  • the locking of the front cover is directly related to the slide, ie the component of the switching device that directly influences the switching position of the switching contact.
  • the switching device it is conceivable for the switching device to have an actuating lever that can be actuated manually, with this actuating lever acting on the slide.
  • Such actuating levers are typically designed in such a way that the actuating lever has a certain amount of freewheeling in order to ensure sudden switching of the switching contact, for example with the aid of an interposed snap-action switching mechanism.
  • the disadvantage here is that the actuating lever can be moved over a certain range without the slide moving.
  • locking means that are directly connected to the Operating lever interact, to be regarded as disadvantageous, since a movement of the operating lever, which does not yet lead to a switching of the switching contact, could nevertheless result in a locking means interacting with the operating lever no longer locking the cover, so that this locking also occurs when one is in the contact position Switching contact does not reliably prevent opening of the front cover when the actuating lever is in the appropriate position.
  • the formation of the locking means in the slide or the connection of the locking means to the slide has the advantage that the locking means can be arranged inside the housing of the switching device, so that unintentional damage to the locking means can be avoided.
  • the front cover is pivotably mounted in the housing.
  • a contact element of the switching contact is preferably mounted in the slide and another contact element of the switching contact is mounted, preferably stationary, in the housing.
  • the locking means has a locking structure, the locking structure engaging behind a counterstructure of the front cover in the contact position when the front cover is in the closed position, in particular engaging behind the counterstructure on a side facing the front.
  • this counter-structure penetrates the housing in the closed position of the front cover, insofar as it protrudes into the interior of the housing.
  • the locking means in particular the locking structure, has a display surface for displaying the switching state of the at least one switching contact
  • the housing or the front cover has a viewing window, with at least a portion of the display area being visible through the viewing window when the front cover is closed.
  • the viewing window is designed in such a way that only a portion of the display area is visible.
  • the display surface is in particular designed in such a way that the display surface has a symbol indicating the contact position, ie the on position of the switching device, and a symbol indicating the open position, ie the off position of the switching device.
  • the slider is preferably mounted completely inside the housing and is mounted in the housing in particular in a region of the switching device that adjoins a rear wall of the housing. As a result, the slider is particularly close to the busbars of the busbar system.
  • the locking means is designed essentially in the form of a rod and extends from the slide in the direction of the front cover.
  • the locking means protrudes from the front in relation to the housing, in particular if it is arranged inside the front cover when the front cover is closed.
  • the locking structure is preferably designed in the form of a plate.
  • the locking structure forms a free end of the locking means.
  • the front cover preferably has a counterstructure with a recess or a through-opening, the locking structure being arranged in the contact position within the recess or the through-opening when the front cover is closed.
  • the front cover is preferably designed as a cover, so that the fuse holders or the fuses arranged in the fuse holders partially protrude from the housing of the switching device can and are still covered on the front and sides by the cover.
  • the fuses or the fuse receptacles are particularly easily accessible when the front cover is open, so that replacing or removing and/or inserting the fuses is simplified.
  • the switching device has a locking device, the locking device being activated by a Blocking position, in which the blocking means prevents displacement of the slide, can be converted into an open position, in which the blocking means enables displacement of the slide. In the blocking position, the slide cannot be transferred from the open position to the contact position, which prevents the switching device from being switched on. Provision is made for the front cover to have a holding structure, with this holding structure holding the blocking means in the open position when the front cover is in the closed position.
  • the front cover acts on the blocking means in such a way that the blocking means is in the open position, so that the switching device can be switched on.
  • the retaining structure of the front cover no longer acts on the blocking means, so that the blocking means is transferred from the open position to the blocked position due to the return means and in this way prevents the switching device from being switched on by blocking the movement of the slide.
  • the blocking means is preferably mounted in the housing in a linearly displaceable manner, in particular mounted in the housing in a displaceable manner perpendicular to the displacement direction of the slide.
  • the holding structure of the front cover which interacts with the blocking means, penetrates the housing in the closed position of the front cover, insofar as it protrudes into the housing of the switching device.
  • the blocking means is preferably mounted within the housing, which prevents or at least makes it more difficult for the blocking means to move unintentionally when the cover is open.
  • the retaining structure that interacts with the blocking means preferably passes through a through-opening, preferably in the form of a slot, in the housing, with this through-opening being finger-safe.
  • the switching device has a stop on the housing side, with the blocking means bearing against this stop in the blocking position.
  • the restoring means is preferably an integral part of the blocking means and the blocking means is preferably designed in one piece.
  • the restoring means is preferably rod-shaped and is supported at a free end facing away from the rest of the blocking means on a housing-side structure of the switching device.
  • the blocking means preferably has a blocking structure and the slide has a counter-structure which interacts with the blocking structure, with the blocking structure being in the displacement path of the counter-structure of the slide in the blocking position of the blocking means and the blocking structure being outside of the displacement path of the counter-structure of the slide in the open position.
  • the blocking structure is preferably formed on the end of the blocking means.
  • the locking means is an integral part of the slide, insofar as the locking means forms a part of the slide.
  • the locking means is a separate component, wherein the locking means with the Slider is connected, in particular lockingly connected to the slide.
  • the locking means can be manufactured independently of the slide, in particular the display area can be applied to the locking means.
  • the locking means can be made of a different material than the slide. As a result, the respective materials of the locking means and the slide can be adapted separately to the respective requirement.
  • the switching device has an actuatable switching mechanism for transferring the at least one switching contact from the contact position to the open position and vice versa, with the switching mechanism having a Slide having interacting joint arrangement, preferably having a toggle joint arrangement.
  • the actuatable switching mechanism is preferably designed as a snap-action switching mechanism.
  • the locking means and the blocking means are each arranged in the area between two fuse holders, preferably the blocking means is arranged between the locking means and a pivot axis of the front cover. This design enables a particularly optimal use of the available installation space in the longitudinal, transverse and vertical direction of the switching device.
  • the switching device is designed as a switching device for a busbar system, in particular as a load-break switch for a busbar system, the switching device having a number of fuse holders corresponding to the number of busbars and a switching contact assigned to the respective fuse holder, the fuse holders are arranged along a longitudinal direction of the switching device, preferably transversely to the busbars.
  • the switching device preferably has three fuse holders.
  • the locking means and/or the blocking means are made in particular from plastic.
  • the Figures 1 to 14 show a first embodiment of the switching device 1 according to the invention or partial components of the first embodiment of the switching device 1 according to the invention.
  • the switching device 1 is presently designed as a multi-pole switching device 1 for use on a busbar system with three busbars.
  • the switching device 1 has a rear side 24 facing the busbars and a front side 23 facing away from the busbars.
  • the switching device 1 according to the invention has three fuse holders 14 arranged in a row transversely to the busbar system, with the respective fuse holder 14 being designed to accommodate a cylindrical fuse, in this case a D02 fuse.
  • a switching contact 2 is assigned to the respective fuse holder 14 of the switching device 1 , the switching contacts 2 in turn being arranged in a row along a longitudinal direction X of the switching device 1 .
  • the switching device 1 has a front cover 4 which is pivotably connected to a housing 3 of the switching device 1, the front cover 4 in the present case being designed as a cover hood. In a closed position of the front cover 4, thus closed front cover 4, the front cover 4 covers the fuse holders 14 from the front.
  • the three switching contacts 2 are connected in the longitudinal direction X of the switching device 1 linearly displaceable in the housing 3 mounted slider 10 can be converted from a contact position to an open position and vice versa.
  • a contact element 21 of the respective switching contact 2 is mounted in the slide 10 and another contact element 22 of the respective switching contact 2 is mounted in the housing 3 in a stationary manner.
  • the other contact elements 22 of the respective switching contact 2 are designed to contact one of the three busbars when the switching device 1 is connected to the busbar system and thus form busbar contacts.
  • One of the contact elements 21 is designed as a bridge contact, with the respective bridge contact making contact in the contact position both with the busbar contact and with one of the respective fuse receptacles 14 associated with the input current conductor 25.
  • the switching device 1 has an actuating lever 6 that can be actuated manually, this actuating lever 6 interacting with a snap-action switching mechanism 20 , this snap-action switching mechanism 20 in turn interacting with the slide 10 .
  • the slide 10 forms a toggle joint arrangement with other joints, with this toggle joint arrangement being in a switched-on state of the switching device 1, ie in a state in which the switching contacts 2 are in the contact position, in an over-center position.
  • the Figures 1, 2 , 6 to 10 show the switching device 1 according to the invention in a switched-off state, thus with the switching contacts 2 in the open position.
  • the electrical fuses or the fuse holders 14 are de-energized, in particular the respective input conductor 25 of the fuse holder 14 is de-energized.
  • they show 3 , 4 and 5 the switching device 1 in a switched-on state, thus in a state with the switching contacts 2 in the contact position. In this state, the fuses or the input current conductors 25 are live.
  • the switching device 1 is designed in such a way that the front cover 4 can only be opened when the switching device 1 is switched off.
  • the switching device 1 has a locking means 7 which is connected to the slide 10 is connected and can accordingly be displaced together with the slider 10, the locking means 7 locking the front cover 4 in the contact position of the switching contacts 2 when the front cover 4 is in the closed position.
  • This is the particular Figures 4 and 5 can be seen in which the front cover 4 is shown partially in section and the area in which the locking means 7 interacts with the front cover 4 is shown.
  • the locking means 7 has a plate-shaped locking structure 8, wherein the locking structure 8 in the contact position when the front cover 4 is in the closed position engages behind a counter-structure 9 of the front cover 4 on a side of the counter-structure 9 that faces the front side 23.
  • the counter-structure 9 is present in a transverse direction Y extending connecting web of the front cover 4, such as in particular 10 can be seen.
  • the counter-structure 9 has a through-opening, with the locking structure 8 being moved into this through-opening in the contact position and thus preventing the front cover 4 from pivoting out of the closed position.
  • the locking structure 8 is no longer in engagement with the counter-structure 9 when the front cover 4 is closed.
  • This state is, for example, in FIG 6 shown.
  • the front cover 4 can be pivoted and thus opened, for example to replace a fuse.
  • the front cover 4 has a handle 15.
  • the locking means 7 is designed such that it protrudes on the front side 23 of the switching device 1 with respect to the housing 3 of the switching device 1.
  • the Switching structure 8 has a display area 18 for displaying the switching status of the switching contacts 2, the front cover 4 having a viewing window 5, with the front cover 4 being closed only a portion, in this case about half of the entire display area 18, being visible through the window 5.
  • the display surface 18 has a first symbol "I" to indicate the switched-on state and a second symbol "0" to indicate the switched-off state, the dimensions and arrangement of the viewing window 5 being such that in the respective switching position only the corresponding symbol can be seen through the viewing window 5 is visible.
  • the switching device 1 has a locking means 11 which is mounted so as to be displaceable perpendicular to the direction of displacement of the slide 10 and which in the present case can be displaced linearly in the vertical direction Z of the switching device .
  • the blocking means 11 can be converted from a blocked position into an open position against a restoring force of a restoring means 17, which is an integral part of the blocking means 11 in the present case.
  • the blocking means 11 rests with its end facing away from the slide 10 against a stop of the switching device 1 on the housing side.
  • the blocking means 11 is displaced as far as possible in the direction of the front side 23 .
  • the blocking means 11 has a blocking structure 12 and the slide 10 has a counter-structure 13, wherein in the blocking position of the blocking means 11 the blocking structure 12 is in the displacement path of the counter-structure 13, so that in the blocked position the blocking structure 12 forms a stop for the counter-structure 13 and This prevents the slide 10 from moving from the open position to the contact position and thus prevents the switching contacts 2 from being actuated.
  • the front cover 4 closed as is the case, for example, in FIG 6 is shown, the blocking means 11 is displaced in the direction of the slide 10 so that the blocking structure 12 is arranged below the counter-structure 13 and thus outside the displacement path of the counter-structure 13 .
  • a displacement of the slide 10 and thus a switching of the switching device 1 is possible.
  • the front cover 4 has a locking device 11 that interacts with it Holding structure 16, this holding structure 16 holds the locking means 11 in the open position in the closed position of the front cover 4.
  • the retaining structure 16 is designed like fins and, in the closed position of the front cover 4 , passes through a through slot 28 in a front wall 27 of the housing 3 and bears against the blocking means 11 at the end.
  • the design of the locking means 11 is in the 14 shown in more detail.
  • the blocking structure 12 is in the present case designed as a pin protruding in the transverse direction Y of the switching device 1 .
  • the restoring means 17 of the blocking means 11 is rod-shaped. A free end of the restoring means 17 is supported on a structure on the housing side.
  • the locking means 7 and the locking means 11 are each arranged in the area between two of the securing receptacles 14 , the locking means 11 being arranged in the present case between the locking means 7 and the pivot axis of the front cover 4 .
  • the locking means 7 is designed as a separate component, such as in particular the 12 can be seen.
  • the locking means 7 is connected to the slide 10 in a latching manner, with the locking means 7 and the slide 10 having latching means 19 which interact with one another for this purpose.
  • the latching means 19 of the locking means 7 are presently formed by two elastically deformable, parallel webs, wherein during the process of connecting the locking means 7 to the slide 10, the two webs are bent apart under the action of the latching means 19 on the slide and during further displacement, in the present case by further pivoting of the locking means 7 behind the locking means 19 on the slide come to rest. As a result, the locking connection or a clip connection between the slide 10 and the locking means 7 is realized.
  • the locking means 7 is arranged in a receiving structure of the slide 10, the receiving structure of the slide 10 being designed in such a way that the locking means 7 is first inserted into this seat and can be pivoted in this seat in order to pivot the locking means 7 for the purpose of locking the locking means 19 to allow.
  • the 15 shows a further embodiment of the switching device 1 according to the invention, this embodiment differing from the first embodiment essentially in the design of the locking means 7, in particular the locking structure 8, and the counter-structure 9.
  • the mating structure 9 assigned to the front cover 4 protrudes into the interior of the housing of the switching device 1 and the locking structure 8 is formed within the housing 3 of the switching device 1 .

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
EP21166318.2A 2021-03-31 2021-03-31 Appareil de commutation pourvu de recouvrement avant pouvant être verrouillé Pending EP4068324A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21166318.2A EP4068324A1 (fr) 2021-03-31 2021-03-31 Appareil de commutation pourvu de recouvrement avant pouvant être verrouillé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21166318.2A EP4068324A1 (fr) 2021-03-31 2021-03-31 Appareil de commutation pourvu de recouvrement avant pouvant être verrouillé

Publications (1)

Publication Number Publication Date
EP4068324A1 true EP4068324A1 (fr) 2022-10-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21166318.2A Pending EP4068324A1 (fr) 2021-03-31 2021-03-31 Appareil de commutation pourvu de recouvrement avant pouvant être verrouillé

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EP (1) EP4068324A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1439681A (en) * 1972-10-31 1976-06-16 Giles Elliott Ltd Medium voltage apparatus bromination of n-containing heterocycles
EP1246212A2 (fr) 2001-03-29 2002-10-02 Jean Müller GmbH Elektrotechnische Fabrik Dispositif de commutation multipolaire pour utilisation sur un système de barre omnibus
EP1271583A2 (fr) 2001-06-19 2003-01-02 Jean Müller GmbH Elektrotechnische Fabrik Dispositif de commutation multipolaire pour utilisation avec des jeux de barres omnibus
DE102012025602A1 (de) * 2012-12-18 2014-06-18 Wöhner GmbH & Co. KG Elektrotechnische Systeme Schaltgerät
EP2747104B1 (fr) 2012-12-18 2017-08-23 Wöhner GmbH & Co. KG Elektrotechnische Systeme Appareil de commutation multipolaire
EP3211650A1 (fr) * 2016-02-29 2017-08-30 Wöhner GmbH & Co. KG Elektrotechnische Systeme Commutateur de separation de charge

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1439681A (en) * 1972-10-31 1976-06-16 Giles Elliott Ltd Medium voltage apparatus bromination of n-containing heterocycles
EP1246212A2 (fr) 2001-03-29 2002-10-02 Jean Müller GmbH Elektrotechnische Fabrik Dispositif de commutation multipolaire pour utilisation sur un système de barre omnibus
EP1271583A2 (fr) 2001-06-19 2003-01-02 Jean Müller GmbH Elektrotechnische Fabrik Dispositif de commutation multipolaire pour utilisation avec des jeux de barres omnibus
DE102012025602A1 (de) * 2012-12-18 2014-06-18 Wöhner GmbH & Co. KG Elektrotechnische Systeme Schaltgerät
EP2747104B1 (fr) 2012-12-18 2017-08-23 Wöhner GmbH & Co. KG Elektrotechnische Systeme Appareil de commutation multipolaire
EP3211650A1 (fr) * 2016-02-29 2017-08-30 Wöhner GmbH & Co. KG Elektrotechnische Systeme Commutateur de separation de charge

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