EP1199732A2 - Dispositif de blocage pour contact à couteau - Google Patents

Dispositif de blocage pour contact à couteau Download PDF

Info

Publication number
EP1199732A2
EP1199732A2 EP01122790A EP01122790A EP1199732A2 EP 1199732 A2 EP1199732 A2 EP 1199732A2 EP 01122790 A EP01122790 A EP 01122790A EP 01122790 A EP01122790 A EP 01122790A EP 1199732 A2 EP1199732 A2 EP 1199732A2
Authority
EP
European Patent Office
Prior art keywords
contact
knife
cutting knife
section
contact arrangement
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.)
Granted
Application number
EP01122790A
Other languages
German (de)
English (en)
Other versions
EP1199732A3 (fr
EP1199732B1 (fr
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
Publication of EP1199732A2 publication Critical patent/EP1199732A2/fr
Publication of EP1199732A3 publication Critical patent/EP1199732A3/fr
Application granted granted Critical
Publication of EP1199732B1 publication Critical patent/EP1199732B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/12Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42Knife-and-clip contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/50Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/52Contacts adapted to act as latches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02Details
    • H01H31/12Adaptation for built-in fuse
    • H01H31/122Fuses mounted on, or constituting the movable contact parts of, the switch
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00Protective 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
    • H01H85/02Details
    • H01H85/20Bases for supporting the fuse; Separate parts thereof
    • H01H85/203Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals
    • H01H85/204Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals for low voltage fuses with knife-blade end contacts

Definitions

  • Fuse strips or disconnectors are usually fitted with fuses. More frequently, devices are used, especially for infeed systems, that do not have fuses, but are equipped with cutting knives. This is particularly true from the point of view of less Power loss and short-circuit protection on the primary side of the supply transformer. Dynamic switching current resistance is often expected here from the switching device. One understands including that in the event of a short circuit, the strip deliberately does not respond.
  • the load results here on the one hand from the current peak when switching on and on the other hand due to the thermal load with continuous current (usually one second).
  • the dynamic one Stress during the electrical transient process often leads to the current-dynamic repulsive forces the cutting knife from the contacts of the fuse holder are thrown out. This creates a risk to people and facilities.
  • blocking knife can be prevented from being thrown out by blocking devices.
  • blocking devices are in the form of brackets known.
  • the strength of the housing elements however, there are limits.
  • the object of the invention is to provide a blocking device for cutting knife, which in In the event of a short circuit, the cutting knife is reliably prevented from being ejected. It is said to be excluded be that this will destroy the housing of the contact arrangement formed by the contacts or all of the electrical equipment.
  • Existing fuse strips or isolators should be easy to retrofit with the blocking device.
  • the invention proposes a blocking device for a cutting knife, which is in a contact arrangement is used, the blocking device throwing out the cutting knife prevented from the contact arrangement in the event of a short circuit and an element for transmitting a Has blocking force in the event of a short circuit directly from the contact arrangement to the disconnecting knife, the element being substantially in a plane perpendicular to the longitudinal axis of the cutting knife is mobile.
  • the Element is pivotable.
  • the element has a high mechanical strength and consists in particular of wire.
  • the active connection between the element and the separating knife and the contact arrangement preferably via a positive connection, which at the latest when the Separating knife is brought out of the contact arrangement, between the element and the separating knife on the one hand and the element and the contact arrangement or the contact on the other hand.
  • the element preferably engages behind the separating knife or the contact.
  • the element When the element is made of wire, it can be done by simple, possibly repeated Bending the wire to create a structure that is easy with a Can be brought into a rear engagement position with the contact or in a recess of the Contact can be inserted and the other end of which serves the rear grip of the cutting knife.
  • This element can be held, for example, by means of a housing part or a cover plate of the housing for the contact arrangement.
  • the element can preferably be pivot in the housing part or the cover plate, so that it is possible to in this to position them in different positions.
  • two positions in the Housing part or the cover plate, in which the element can be locked These two positions correspond to the engagement position of the element in which it engages behind the cutting knife, and Disengaged position in which it does not engage behind it. In the latter position leaves insert the cutting knife into the contact arrangement.
  • the blocking device is used by the user of outside, that is protected against contact, can be actuated. This means that the operating device can also be switched on Device can be operated from the outside.
  • a control unit for the element in a cover mounted to cover the separating knife and the contact arrangement, in particular displaceable is stored. If this cover is pivotable, for example, the control panel contacts the element or when the pivoting movement is completed when the lid is closed a cover cap connected to the element. It is then only necessary to close the control panel move to bring the element into the grip position with the cutting knife.
  • the isolator 1 has two contacts 2 and 3, into which, as shown in FIG. 1, a isolating knife 4 is used.
  • the separating knife 4 is provided with two grip tabs 5, which are separated by a separator cover 6 can be included.
  • the separator cover shown only half is in the area of his End 7 inserted into a projection of a disconnector housing, not shown, and around this swiveling, in the sense of an opening movement according to arrow X.
  • To open or close the Isolator cover 2 is gripped in the area of its opposite end 8.
  • the two Contacts 2 and 3 are designed as so-called delta contacts, as described in DE 197 29 223 A1 are described and arranged.
  • the respective contact 2 or 3 is in the range of one Bottom plate section 9 screwed to an unillustrated lower part, wherein Push through the holes 10 in the base plate section 9.
  • the contact body 2 or 3 furthermore, starting from the base plate section and directed away from the lower part of the separator, Plate sections 11 and 12 and 13 and 14, wherein the plate sections 12 and 14 or 11 and 13 form in their lower area with the base plate section 9 quasi delta shape and are arranged parallel to each other in the respective upper area.
  • the plate sections 13 and 14 are longer than the plate sections 11 and 12, the former at the level of upper end of the plate sections 11 and 12 are angled in the direction thereof and projections 15 of the plate sections 11, 12 recesses 16 in the angled area of the plate sections Enforce 13 and 14.
  • the plate sections 11 and 12 or 13 and 14 have in their lower area towards each other approaches 17, which, when not in use Cutting knife, touch and form a web 18, or slightly when cutting knife 4 is inserted are spaced from each other. This is above the web 18, between the respective Plate sections 11 and 12 or the respective plate sections 13 and 14, a slot 19 for inserting the respective actual knife 20 of the cutting knife 4 is formed. Between the respective web 10 and the associated base plate section 9 is in the contact body 2 or 3, due to the distance between the plate sections 11 and 12 or 13 and 14, a Opening 21 formed. The opening between the plate sections 13 and 14 of the contact body 3 is used in the embodiment to accommodate the element described in more detail below the blocking device. Each contact body 2 or 3 is in the area of the plate sections 11 and 12 or 13 and 14 with a spring ring 22 which the plate sections 11th and 12 or 13 and 14 in the sense of an approximation of the webs 18.
  • the blocking device 23 has an element 24 of high mechanical strength owning wire. This is in the area of its upper end in the manner of a downward U trained.
  • the element 24 is initially in its lower area starting from the U 25 essentially angled in the plane of the U so that it extends to a long section of wire 27 a short wire section 26 connects.
  • the wire is on the short wire section 26 then, essentially angled at a right angle perpendicular to the plane of the U, so that a relatively long wire section 28 results.
  • the double bend of the element 24 in the area of the short wire section 26 serves the purpose of correspondingly forming a bearing surface to form angled counter bearing 29 of a plastic cover plate 30.
  • the cover plate 30 is provided with locking elements, preferably with the disconnector housing, not shown or with the associated contact body 3 by clipping in the area of the plate sections 11 and 12 is connectable.
  • the long wire section 27 by means of the cover plate 30 against the Contact body 3 pressed and thus held, the long wire section 28 in the contact body 3 in the area of the openings between the plate sections 11 and 12 or 13 and 14 is inserted. This is such that the wire section 28 is at a short distance from the respective Web 18 is positioned.
  • the cover plate 30 in the form of an L is in the region of its upper one End provided with two recesses 32 and 33 which are semicircular are such that the long wire section 27 in the one position in the locking recess 32, as in FIG Figure 4 shown, or is fixed in the other recess 33.
  • Figure 3 illustrates the contact body 3, which is provided with a cover 34, the however, in order to clarify the invention, only half is drawn.
  • the long wire section 28 of the element 24 is inserted.
  • the cover plate 30 with the contact body 3 or the lower housing part, not shown the separator 1 connected.
  • a plastic cap is placed on the U-shaped end 25 of the element 24 35 attached. With this acts an operating part slidably mounted in the separator cover 6 36 together as illustrated in Figure 2.
  • the element 24 is thus essentially in a plane perpendicular to the longitudinal axis 39 of the Cutting knife 4 swiveling. This plane is essentially parallel to the parallel areas the plate sections 11 to 14 arranged.
  • the pivoting position of the element 24, in which cooperates with the locking recess 33 there is the free section 37 of the U-shaped End 25 of the element 24 outside the alignment of the associated slot 19 in Contact body 3, so that the separating knife 4 is inserted into the two contact bodies 2 and 3 from above can be until it almost touches the webs 18 of the contact body 2 and 3, as in Figure 1 is illustrated.
  • the cutting knife 4 is inserted by pivoting the the separating knife receiving housing cover 6.
  • control unit 36 lies on with its two lower projections 38 the cap 35 of the element 24 and positions it between the projections 38.
  • the element 24 pivoted so that it assumes a position in which the long wire section 27 with the Locking recess 32 is locked.
  • the free section 37 of the element 24 is aligned with the associated knife 20 and is arranged at a slight distance from this.
  • the separating knife 4 can simply be pulled out of the contact bodies 2 and 3 if previously by moving the control panel 36 in the opposite direction, the other locking position of the element 24 is brought about, in which it passes through the locking recess 33.

Landscapes

  • Knives (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Contacts (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP01122790A 2000-09-22 2001-09-21 Dispositif de blocage pour contact à couteau Expired - Lifetime EP1199732B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10047566A DE10047566A1 (de) 2000-09-22 2000-09-22 Blockiereinrichtung für Trennmesser
DE10047566 2000-09-22

Publications (3)

Publication Number Publication Date
EP1199732A2 true EP1199732A2 (fr) 2002-04-24
EP1199732A3 EP1199732A3 (fr) 2003-02-26
EP1199732B1 EP1199732B1 (fr) 2006-08-09

Family

ID=7657622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01122790A Expired - Lifetime EP1199732B1 (fr) 2000-09-22 2001-09-21 Dispositif de blocage pour contact à couteau

Country Status (4)

Country Link
EP (1) EP1199732B1 (fr)
AT (1) ATE336074T1 (fr)
DE (2) DE10047566A1 (fr)
ES (1) ES2270932T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3671791A1 (fr) 2018-12-19 2020-06-24 Jean Müller GmbH Elektrotechnische Fabrik Agencement d'une pièce de support et d'au moins un couvercle d'une barrette de commutation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3268852A (en) * 1964-03-16 1966-08-23 Wennersten Bo Electrical clip contact device
DE4419240A1 (de) * 1993-06-07 1995-01-19 Weber Ag Ein- oder mehrpolige NH-Sicherung
DE19729223A1 (de) * 1997-07-09 1999-01-21 Mueller Jean Ohg Elektrotech Kontaktkörper zur Aufnahme eines Kontaktmessers eines Sicherungseinsatzes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH664233A5 (de) * 1984-06-07 1988-02-15 Sprecher Energie Ag Antriebsvorrichtung fuer ein elektrisches schaltgeraet, insbesondere fuer einen trennschalter.
FR2623938B1 (fr) * 1987-11-26 1990-04-13 Telemecanique Electrique Additif de signalisation de defaut pour appareil electrique de protection
DE3802184A1 (de) * 1988-01-26 1989-08-03 Licentia Gmbh Niederspannungsschalter mit sperrlaschen
US4973927A (en) * 1988-10-12 1990-11-27 Westinghouse Electric Corp. Two piece cradle latch, handle barrier locking insert and cover interlock for circuit breaker
FR2650701B1 (fr) * 1989-08-03 1995-12-15 Merlin Gerin Disjoncteur ou interrupteur modulaire equipe d'un module de sectionnement
FR2685124B1 (fr) * 1991-12-17 1994-03-18 Telemecanique Appareil interrupteur de protection tel que contacteur-disjoncteur.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3268852A (en) * 1964-03-16 1966-08-23 Wennersten Bo Electrical clip contact device
DE4419240A1 (de) * 1993-06-07 1995-01-19 Weber Ag Ein- oder mehrpolige NH-Sicherung
DE19729223A1 (de) * 1997-07-09 1999-01-21 Mueller Jean Ohg Elektrotech Kontaktkörper zur Aufnahme eines Kontaktmessers eines Sicherungseinsatzes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3671791A1 (fr) 2018-12-19 2020-06-24 Jean Müller GmbH Elektrotechnische Fabrik Agencement d'une pièce de support et d'au moins un couvercle d'une barrette de commutation

Also Published As

Publication number Publication date
ES2270932T3 (es) 2007-04-16
EP1199732A3 (fr) 2003-02-26
ATE336074T1 (de) 2006-09-15
EP1199732B1 (fr) 2006-08-09
DE10047566A1 (de) 2002-04-18
DE50110677D1 (de) 2006-09-21

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