EP3607572A1 - Commutateur à couvercle de contact - Google Patents

Commutateur à couvercle de contact

Info

Publication number
EP3607572A1
EP3607572A1 EP18717831.4A EP18717831A EP3607572A1 EP 3607572 A1 EP3607572 A1 EP 3607572A1 EP 18717831 A EP18717831 A EP 18717831A EP 3607572 A1 EP3607572 A1 EP 3607572A1
Authority
EP
European Patent Office
Prior art keywords
contact
arc
switching device
cover
point
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
EP18717831.4A
Other languages
German (de)
English (en)
Other versions
EP3607572B1 (fr
Inventor
Johannes Schmid
Daniel HAMMERL
Korbinian Kreuzpointner
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.)
Schaltbau GmbH
Original Assignee
Schaltbau 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 Schaltbau GmbH filed Critical Schaltbau GmbH
Publication of EP3607572A1 publication Critical patent/EP3607572A1/fr
Application granted granted Critical
Publication of EP3607572B1 publication Critical patent/EP3607572B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/302—Means for extinguishing or preventing arc between current-carrying parts wherein arc-extinguishing gas is evolved from stationary parts
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H2050/046—Assembling parts of a relay by using snap mounting techniques
    • 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 present invention relates to a switching device according to the preamble of independent claim 1.
  • a generic switching device has at least one contact point, wherein the contact point has a first contact and a second contact, wherein the first and second contacts are spaced apart in an open position and electrically contact each other in a closed position.
  • the contact point is associated with an arc blowing device for generating a magnetic blowing field, wherein the blowing field is such that an emerging when opening the contact point arc is blown away from the contact point.
  • EP 0380012B1 describes a current-limiting circuit breaker with a contact and a mating contact, each of which is located on a pivotable switching arm.
  • the two switching arms swing apart so that the contact point is opened.
  • the resulting switching arc is driven by a magnetic blowing field in a quenching chamber.
  • a part of this switching arm is provided with an insulating plastic cap. The insulating cap is located on that side of the switching arm, which faces the second switching arm.
  • the switching arm with the insulating cap is connected via a current path to a connection contact of the circuit breaker.
  • the current path serves as an arc guide plate, over which jumps the base of the switching arc when the switching arc is blown away from the contact point, and which leads the switching arc on the way to the quenching chamber and stretches accordingly.
  • FIG. 1 Another switching device according to the preamble of independent claim 1 is known from WO 2012/076605 A1.
  • This switching device has a double break with two contact points. Each contact point consists of a fixed contact and a corresponding movable contact, wherein the two movable contacts are part of a parallel to the Blasfeld aligned contact bridge.
  • the switching device is designed for bidirectional operation and therefore has corresponding arc extinguishing devices on both sides of the contact bridge.
  • the switching arc is blown off depending on the current direction in one of the two directions of the respective contact point.
  • the direction of movement of the switching arc thus extends transversely to the longitudinal extent of the contact bridge.
  • corresponding arc guide are provided in order to guide the switching arc in one of the associated arc quenching. These extend both from the respective fixed contact and from the associated movable contact on the contact bridge laterally outward to the corresponding arc quenching device.
  • Object of the present invention is to provide a switching device of the generic type with a particularly simple and compact design, at the same time a reliable deletion of the switching arc is ensured.
  • the switching arc is referred to simply as arc.
  • the solution according to the invention has the advantage that the arc can be particularly strongly curved and thereby stretched, without causing the risk that the base of the arc surrounds the contact and thus can not be extinguished.
  • the switching device according to the invention remains particularly compact.
  • the contact which is provided with the cover according to the invention, no arc guide is needed on the jumps the arc of the arc, when the arc is blown away from the contact point, and which serves to stretch the arc and lead to a corresponding arc quenching device
  • the switching device according to the invention is characterized not only particularly compact but also easy and inexpensive to manufacture, since it can be dispensed with various parts that are required in conventional switching devices of the generic type. That side of the cover provided with the contact, which faces the respective other contact, has no cover.
  • the blower field of the switching device according to the invention is preferably generated purely permanent magnetically. This means that no electromagnetic blowing coils are needed to generate the magnetic blowing field.
  • One or more permanent magnets are preferably used to generate the magnetic blowing field.
  • the permanent magnets may be associated with pole plates which, in the correspondingly required ranges, have a homogege- ensure magnetic field. The use of permanent magnets contributes to a compact, lightweight and inexpensive construction.
  • the cover extends from the contact side facing away from the respective contact via an edge of the respective contact, which is substantially orthogonal to magnetic field lines of the blower field, to a free end face of the respective contact, so that the end face at least partially also covered by the cover. This prevents the base of the arc from running along the face of the contact.
  • the end face is preferably completely covered by the cover. Further preferably, the end face is also aligned orthogonal to the magnetic field lines of the Blasfelds. If the switching device according to the invention is a switching device with double interruption and a contact bridge aligned parallel to the magnetic blow field, preferably both end faces of the contact bridge are covered by the cover.
  • the cover has on a longitudinal side of the contact, which runs substantially parallel to magnetic field lines of the blower field, a recess which is arranged and formed such that the base point of the arc runs into the recess when the arc is blown away from the contact point.
  • the contact side facing away from the respective contact is thus partially covered in this embodiment, not covered by the cover. This allows the base of the arc to run into the recess. He is caught in the recess, so to speak.
  • the cover Before and behind the recess, the cover preferably extends over the entire width of the respective contact up to its longitudinal sides.
  • the recess is arcuate.
  • the recess is designed circular arc.
  • the recess can alternatively also not be arcuate, for example rectangular, executed.
  • an arcuate recess has proven to be particularly advantageous.
  • the cover is made of plastic. More preferably, it is a high temperature resistant plastic. The use of polyetherimide (PEI) has proven particularly suitable. This achieves a long service life.
  • PEI polyetherimide
  • the use of a plastic as a material for the cover allows a cost-effective production of the switching device according to the invention.
  • a material for the cover and other insulating or non-conductive materials are conceivable.
  • the cover may for example also consist of ceramic.
  • the cover may either be glued to the respective contact, latched to the contact, or otherwise connected to the corresponding contact.
  • the switching device has a double interruption with two contact points, wherein the first contact of each of the two contact points is formed as a fixed contact, and wherein the second contact of each of the two contact points is part of a common contact bridge which is parallel to Magnetic field lines of the blower field is aligned.
  • the cover may preferably extend in this embodiment over the entire side of the contact bridge, which faces away from the two fixed contacts. The two sides facing away from contact of the two movable contacts thus form a single contact side facing away from the contact bridge. Since the blowing field is aligned in this embodiment substantially parallel to the longitudinal extent of the contact bridge, the arc is blown away transversely to the contact bridge of the respective contact point.
  • the advantageously provided recesses in the cover are thus located on the longitudinal sides of the contact bridge.
  • each contact point associated with an arc quenching device is designed for a bidirectional operation, wherein the arc quenching device comprises extinguishing elements which are arranged on both sides of the contact bridge.
  • the arc quenching device or its extinguishing elements can also consist of a plastic.
  • PA polyamide
  • the extinguishing elements can also consist of another suitable material, for example of ceramic.
  • the extinguishing elements are also arranged on the contact side facing away from the contact bridge.
  • the extinguishing elements preferably have a certain distance from the contact bridge.
  • a particularly high extinguishing capability is achieved despite a particularly compact design.
  • the arc can be particularly strongly curved by the magnetic blowing field and thereby stretched until it is finally brought to extinction by the extinguishing elements of the arc quenching device.
  • the fixed contacts in a direction orthogonal to the magnetic field lines of the Blasfelds wider than the contact bridge. Further preferably, the fixed contacts extend to the arc quenching device and simultaneously serve as arc guide plate. At this point, it should again be emphasized that no arc baffle is necessary at the opposite movable contact or at the contact bridge.
  • the arc quenching device forms, together with the arc blowing device, a tool-free removable assembly which can be fastened by means of snap hooks to a housing of the switching device.
  • the snap hooks are preferably elastic tongues, which are furthermore preferably part of the arc quenching device or of the assembly comprising the arc quenching device and the arc blowing device. They engage with corresponding locking elements of the housing.
  • each a housing-side bracket is provided which surrounds the latched end of the snap hook and prevents unintentional release of the latch by attaching a lock, for example by means of sealing, and caused by overstretching overuse of the material when releasing the locking.
  • all arc-quenching devices and arc-blowing devices are combined at the two contact points into a single detachable subassembly.
  • the switching device according to the invention further comprises an extinguishing chamber cover, which is designed such that plasma, which is generated by the arc and exiting between the arranged on the contact side facing away from the contact bridge extinguishing elements, is deflected laterally.
  • the deflection preferably takes place such that the plasma at two emerges on opposite sides of the switching device.
  • At the top of the switching device thereby occurs no plasma, whereby the distance of the switching device according to the invention to other components, which are arranged above the switching device, can be reduced. This facilitates the installation of the switching device according to the invention in a corresponding device in which the switching device is to be used, considerably.
  • the extinguishing chamber cover can be fastened without tools by means of snap hooks on the assembly consisting of arc quenching device and arc blowing device.
  • the extinguishing chamber cover can thus be exchanged in a particularly simple manner or else subsequently attached to the switching device according to the invention.
  • FIG. 1 an oblique view of a switching device according to the invention
  • FIG. 2 shows a perspective longitudinal section through the switching device according to the invention from FIG. 1 along the section line II drawn in FIG. 1, FIG.
  • FIG. 3 shows a cross section through the switching device according to the invention from FIGS. 1 and 2 along the section line III drawn in FIG. 1, FIG.
  • FIG. 4 shows a top view of the switching device according to the invention from FIGS. 1 to 3 without an arc-extinguishing device
  • Figure 5 the representation of Figure 1 with additionally mounted on the switching device according to the invention extinguishing chamber cover, and
  • FIG. 6 shows a side view of the switching device according to the invention from FIGS. 1 to
  • Figure 1 shows a perspective view of a switching device according to the invention 1.
  • the two terminals 25 of the switching device, and an arc quenching device 16 which is arranged in the upper part of the switching device according to the invention and the components are explained in more detail below.
  • FIG 2 shows a perspective longitudinal section through the switching device according to the invention along the drawn in Figure 1 section line II.
  • the switching device 1 has a double break with two contact points 14 and 15.
  • Each contact point consists of a fixed contact 2 and a movable contact, wherein the two movable contacts are combined to form a common contact bridge 3.
  • the two fixed contacts 2 are led out of the housing of the switching device and thus simultaneously form the two terminal contacts 25 of the switching device.
  • Each of the two fixed contacts 2 has a corresponding contact surface 4, which can be brought into abutment with an opposite contact surface 5 of the contact bridge 3.
  • an electrical contact between the fixed contact 2 and the contact bridge 3 is thus produced in each case via the contact surfaces 4 and 5.
  • the electromagnetic drive of the contact bridge 3 is shown in the lower part of the figure and not for the invention of importance.
  • FIG. 3 shows a cross section through the switching device according to the invention along the drawn in Figure 1 section line III. The cut was made through the first pad 14. The illustration also applies correspondingly to the second contact point 15.
  • the switching device comprises an arc blowing device, which essentially consists of the permanent magnets 6 shown in FIG. 3 and corresponding pole plates 7, which can be seen in FIGS. 1 and 2.
  • the arc blowing device generates a magnetic blowing field, which is aligned parallel to the longitudinal extension of the contact bridge 3, wherein the longitudinal extent of the contact bridge is defined by a mental connection of the two contact points 14 and 15.
  • a switching arc 24 which is blown away by the magnetic blowing field transverse to the longitudinal extent of the contact bridge of the contact point.
  • a switching arc 24 which is blown away by the magnetic blowing field transverse to the longitudinal extent of the contact bridge of the contact point.
  • a plurality of positions of the switching arc 24 are located. It can be clearly seen that the switching arc 24 is all the more curved and thereby stretched the further it is blown away from the contact point.
  • the lower Base point 10 of the switching arc migrates along the fixed contact 2 along the outside.
  • the fixed contact 2 is significantly wider than the contact bridge 3 and thus simultaneously serves as arc guide plate.
  • the other foot 9 moves from the contact surface 5 on the longitudinal side of the contact bridge 3 to the top of the contact bridge, which faces away from the fixed contact 2.
  • a non-conductive, insulating cover 8 made of a high temperature resistant plastic, for example polyetherimide on.
  • the cover 8 is best shown in the plan view of Figure 4, in which the arc quenching device 16 is not shown for the sake of clarity.
  • the cover 8 extends from the contact side facing away from the contact bridge over an edge at the free end of the contact bridge, which is substantially orthogonal to the agnetfeldlinien the Blasfelds, toward the free end face 11 of the contact bridge, so that the end face also at least in the upper area of the cover is covered. This prevents the arc 24 from traveling along the end face 11 of the contact bridge.
  • the frontal cover is given on both end faces 1 1 of the contact bridge.
  • the cover 8 per contact point in each case two recesses 13, which are arranged and designed such that the base point 9 of the switching arc 24 runs in the recess 13 when the arc is blown away from the contact point.
  • the base 9 of the arc 24 is captured in the recess, so to speak, which effectively prevents the base from breaking in an undesired direction.
  • the recess is designed circular arc.
  • the arc quenching device 16 has a plurality of extinguishing elements 17 on both sides of the contact bridge and on the upper side of the contact bridge facing away from the contact, which extinguish the switching arc 24.
  • the extinguishing elements 17 are made of plastic and are made in one piece with a holder of the arc quenching device 16. Of course, the extinguishing elements can also be made of ceramic.
  • the arc quenching device forms together with the arc blowing device, consisting of the permanent magnet 6 and the pole plates 7, a tool-free removable assembly which is attached by means of snap hook 18 on the housing 20 of the switching device according to the invention.
  • the snap hooks 18 are designed as resilient tongues whose ends engage with corresponding latching elements 19 of the housing 20.
  • the locking connection is in each case caused by a bracket 21 on the housing against overstretching. Overuse of the material when releasing the locking and by attaching a lock, for example by means of sealing, secured against unintentional loosening.
  • the switching device according to the invention can optionally be equipped with an extinguishing chamber cover 22, which can likewise be fastened to the arc extinguishing device without tools by means of snap hooks 23.
  • the quenching chamber cover 22 is arranged at the top of the switching device according to the invention and causes a deflection of the plasma, which is generated by the arc and passes through the over the contact facing away from the upper side of the contact bridge arranged extinguishing elements 17 to the outside. The deflection takes place laterally outwards. As a result, no safety clearance must be maintained between the upper side of the switching device according to the invention and further components or components.
  • the quenching chamber cover 22 thus facilitates the installation of the switching device 1 according to the invention in many cases.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Push-Button Switches (AREA)

Abstract

La présente invention concerne un commutateur comportant au moins une pièce de contact, la pièce de contact comportant un premier contact et un deuxième contact, les premier et deuxième contacts étant espacés l'un par rapport à l'autre dans une position ouverte et formant ensemble un contact électrique dans une position fermée, un dispositif de jet d'arc électrique étant associé à la pièce de contact pour la production d'un champ magnétique de jet, le champ de jet étant agencé de telle sorte qu'un arc électrique se produisant lors de l'ouverture de la pièce de contact est éjecté de la pièce de contact. Selon l'invention, au moins un des deux contacts comporte sur un côté détourné des contacts qui est détourné de l'autre contact respectif un couvercle non conducteur qui empêche qu'un point d'origine de l'arc électrique traverse le côté détourné des contacts.
EP18717831.4A 2017-04-06 2018-04-06 Commutateur à couvercle de contact Active EP3607572B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017107441.4A DE102017107441A1 (de) 2017-04-06 2017-04-06 Schaltgerät mit Kontaktabdeckung
PCT/EP2018/000167 WO2018184727A1 (fr) 2017-04-06 2018-04-06 Commutateur à couvercle de contact

Publications (2)

Publication Number Publication Date
EP3607572A1 true EP3607572A1 (fr) 2020-02-12
EP3607572B1 EP3607572B1 (fr) 2023-05-24

Family

ID=61972478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18717831.4A Active EP3607572B1 (fr) 2017-04-06 2018-04-06 Commutateur à couvercle de contact

Country Status (9)

Country Link
US (1) US11600461B2 (fr)
EP (1) EP3607572B1 (fr)
JP (2) JP7118503B2 (fr)
KR (1) KR102284978B1 (fr)
CN (1) CN110678949B (fr)
DE (1) DE102017107441A1 (fr)
FI (1) FI3607572T3 (fr)
MY (1) MY196684A (fr)
WO (1) WO2018184727A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020104258B4 (de) * 2020-02-18 2022-09-29 Schaltbau Gmbh Schaltgerät mit zumindest zwei miteinander kommunizierenden Löschbereichen

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DE3901852A1 (de) 1989-01-23 1990-07-26 Kloeckner Moeller Elektrizit Kontaktsystem fuer strombegrenzende leistungsschalter
JPH0845411A (ja) 1994-05-23 1996-02-16 Mitsubishi Electric Corp 発弧時に飛散する金属類の絶縁体化方法、それに用いるガス発生源材料およびそれを用いた開閉器
JP3391016B2 (ja) * 1998-08-25 2003-03-31 富士電機株式会社 電磁接触器
EP1168392B1 (fr) * 1999-10-14 2005-05-04 Matsushita Electric Works, Ltd. Contacteur
JP4483130B2 (ja) 2001-05-29 2010-06-16 三菱電機株式会社 開閉装置の消弧機構
CN200941346Y (zh) * 2006-03-03 2007-08-29 西安开天铁路牵引电器有限公司 交流电磁接触器电磁吹弧装置
JP2007305468A (ja) 2006-05-12 2007-11-22 Omron Corp 電磁継電器
CN201252061Y (zh) * 2008-09-26 2009-06-03 中国振华集团群英无线电器材厂 小型直流接触器
US9035735B2 (en) * 2010-03-15 2015-05-19 Omron Corporation Coil terminal
EP2463879A1 (fr) 2010-12-07 2012-06-13 Eaton Industries GmbH Commutateur doté d'une chambre d'extinction
EP2463876A1 (fr) * 2010-12-07 2012-06-13 Eaton Industries GmbH Commutateur doté d'une chambre d'extinction
JP5689741B2 (ja) * 2011-05-19 2015-03-25 富士電機株式会社 電磁接触器
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CN106531563B (zh) * 2017-01-04 2019-04-02 昆山国力源通新能源科技有限公司 磁保持节能型高压直流接触器

Also Published As

Publication number Publication date
US11600461B2 (en) 2023-03-07
FI3607572T3 (fi) 2023-06-28
JP2020513136A (ja) 2020-04-30
CN110678949B (zh) 2021-12-14
MY196684A (en) 2023-04-30
KR102284978B1 (ko) 2021-08-03
US20220310342A1 (en) 2022-09-29
JP7118503B2 (ja) 2022-08-16
WO2018184727A1 (fr) 2018-10-11
CN110678949A (zh) 2020-01-10
KR20190131577A (ko) 2019-11-26
EP3607572B1 (fr) 2023-05-24
DE102017107441A1 (de) 2018-10-11
JP2022017498A (ja) 2022-01-25

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