EP3067909B1 - Unité à curseur de contact pour un interrupteur - Google Patents

Unité à curseur de contact pour un interrupteur Download PDF

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Publication number
EP3067909B1
EP3067909B1 EP15158551.0A EP15158551A EP3067909B1 EP 3067909 B1 EP3067909 B1 EP 3067909B1 EP 15158551 A EP15158551 A EP 15158551A EP 3067909 B1 EP3067909 B1 EP 3067909B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact piece
load spring
movable contact
piece
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.)
Active
Application number
EP15158551.0A
Other languages
German (de)
English (en)
Other versions
EP3067909A1 (fr
Inventor
Martin Steinbauer
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP15158551.0A priority Critical patent/EP3067909B1/fr
Priority to CN201580077592.XA priority patent/CN107408465B/zh
Priority to PCT/EP2015/075426 priority patent/WO2016142007A1/fr
Priority to US15/556,550 priority patent/US10483051B2/en
Priority to BR112017019245-4A priority patent/BR112017019245B1/pt
Publication of EP3067909A1 publication Critical patent/EP3067909A1/fr
Application granted granted Critical
Publication of EP3067909B1 publication Critical patent/EP3067909B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/32—Self-aligning contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2008—Facilitate mounting or replacing contact bridge and pressure spring on carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Definitions

  • the invention relates to a contact slide unit for a switching unit comprising a contact slide with a guided therein movable contact piece, which is acted upon by a side of a contact load spring.
  • Switching units serve, among other things, the safe switching off in the event of a short circuit and thus protect consumers and systems. Furthermore, electrical or mechanical switching units are suitable for the operational manual switching of consumers as well as for the safe separation of a system from the power network during maintenance work or changes to the system. Electrical switching units are often operated electromagnetically.
  • switching units are high-quality electrical switching devices with integrated protection for motors, lines, transformers and generators. They are used at workstations with a lower switching frequency. Such switching units are suitable in addition to the short circuit protection for overload protection.
  • Circuit breakers have two separate release mechanisms for overload and short-circuit protection. Both triggers are connected in series.
  • the protection at Short circuit takes over a timely almost instantaneous acting electromagnetic release.
  • the electromagnetic release unlocks without delay a circuit breaker of the circuit breaker.
  • a switching armature disconnects the contactor before the short-circuit current can reach its maximum value.
  • Circuit breakers with high switching capacity cause high short circuits, which in turn cause large magnetic forces between the moving contact and the fixed contact.
  • These two forces cause the movable contact piece is impulsively spun against its resulting spring force in the event of a short circuit and rebounds against the impact dome in the lower part.
  • Known contact slides of these switching units often have two guide systems, an inner and an outer guide system.
  • the outer guide system is used when the switching operation, that is, the switching on or off, via a switching mechanism of the switching unit. This does not create a bridge twister.
  • the inner guide system is used in the event of a short circuit, when the switching operation via a switching armature, often a plunger, the switching unit takes place. That is, when switching off due to a short circuit, the movable contact piece along the inner guide system leads the contact slide ahead, bounces on impact surfaces in the so-called lower part of the switching unit and flies back along the inner guide system. In this case, it flies against the switching armature or the plunger of the switching unit. It may happen that the movable contact piece and the plunger meet outside their center lines, so that this can lead to a rotation of the movable contact piece about its longitudinal axis.
  • the DE 100 61 394 A1 describes a contact slide unit for a switching unit with a contact slide with a guided therein movable contact piece, which is acted upon by a side of a contact load spring, wherein the movable contact piece is mounted in a winding gap between two turns of the contact load spring.
  • the document SU 955 244 discloses a contact slide unit according to the preamble of claim 1. Accordingly, the object of the present invention is to provide a contact slide unit for a switching unit create, which is designed such that bridge rotors of the contact piece are avoided, and to provide a method for mounting this contact slide unit.
  • this object is achieved by a contact slide unit having a contact slide with a guided therein movable contact piece, which is acted upon by a side of a contact load spring.
  • the invention is inter alia characterized in that the movable contact piece is mounted in a winding gap between two turns of the contact load spring.
  • the contact load spring preferably has an enlarged winding gap, in which the movable contact piece is mounted. This results in a positive mounting of the movable contact piece in the contact load spring. In conjunction with the integrated in the contact slide guide surfaces cause the applied turns of the contact load spring above and below the movable contact piece protection against rotation.
  • Another advantage of this concept according to the invention is that you do not have to deviate from the original assembly process of the switching unit, in particular the circuit breaker. Only before assembling the bridge with the contact slide must it be inserted into the contact load spring. The main changes consist in a slight change in the contact slide, a correction of the punched bridge geometry and an adjustment of the contact load spring geometry.
  • the turns of the contact load spring are guided above the movable contact piece by a contour in the contact slide.
  • the integrated into the contact slide guides are used to record the turns of the contact load spring, which are arranged above the movable contact piece, ie on the side of the contact pads. Due to the positive mounting of the movable contact piece in the contact load spring and by the contour which engages in the turns of the contact load spring above the movable contact piece, an anti-rotation is achieved.
  • An inventive continuation of this concept may consist in that the contour is arranged conically tapered in the contact slide.
  • the conical tapering of the contour ensures that the windings are securely received and guided above the movable contact piece of the contact load spring.
  • the turns of the contact load spring are formed above the movable contact piece with narrowing diameter.
  • the tapered diameter tapered turns of the contact load spring above the movable contact piece surrounded in this way with some play the preferably tapered leadership of the contact slide.
  • a technical continuation of the inventive concept may consist in that between the last turn on the underside of the movable contact piece and the first turn on the upper side of the movable contact piece, a spacer is formed in the contact load spring.
  • the spacer allows the formation of a slightly larger winding gap in the contact load spring so that the movable contact can be easily positioned between the last turn on the bottom of the movable contact and the first turn on the top of the movable contact.
  • the spacer has the height of the longitudinal edge of the movable contact piece.
  • the formation of the spacer in the height of the longitudinal edge of the movable contact piece allows easy insertion of the movable contact piece in the contact spring and causes the movable contact piece between the last turn on the bottom and the first turn at the top stores almost free of stress.
  • another concept may be that the movable contact piece has opposite projections.
  • These protrusions have heretofore been semi-concentric and are formed in the present invention in the form of a quarter-concentric protrusion.
  • the spacer may thus be positioned in such a way.
  • the contact slide according to the invention is used in a circuit breaker application.
  • the contact slide unit according to the invention for a switching unit has a contact slide with a movable contact piece guided therein.
  • the contact slide is preferably U-shaped with a central region having four side edges, a top and a bottom, and two oppositely disposed side guide.
  • the side guides open into the middle region and have at the opposite end portions preferably small feet, which serve as a support surface for the movable contact piece.
  • a preferably conically tapering contour is arranged on the inside, starting from the top side in the direction of the movable contact piece.
  • the movable contact piece has on the upper side laterally next to the contact slide in each case a contact pad.
  • the underside of the movable contact piece rests on a contact load spring.
  • the last turn of the contact load spring below the movable contact piece passes into a spacer, which preferably has the height of the movable contact piece.
  • the spacer merges into the first turn of the contact load spring on top of the movable contact piece.
  • the movable contact piece is mounted or clamped in a winding gap in the contact load spring.
  • the windings above the movable contact piece with a narrowing Diameter be formed. In the turns above the movable contact piece engages the preferably conical contour, so that the windings are fixed and guided.
  • the contact slide unit according to the invention is characterized in that the movable contact piece occupies a positive position in the contact load spring and is securely held in the horizontal position even after switching operations. Even with an off-center introduction of Stromenge mechanism and current loop forces acting on a short circuit on the movable contact piece and this hurl against the impact in the lower part, the movable contact piece is effectively guided by the contact load spring. A tilting or even tilting of the movable contact piece is thus no longer possible and a secure contact between Festschalt Swiss and movable contact piece is guaranteed even after a short circuit.
  • Fig. 1 shows a contact slide unit according to the invention with a contact slide 1 and guided therein a movable contact piece 2.
  • the contact slide 1 is preferably U-shaped with a central region 3, the four side edges, a top and a bottom and two oppositely arranged side guides 4.
  • the side guides 4 open into the central region 3.
  • a preferably conically tapering contour 5 is arranged on the inside, starting from the upper side in the direction of the movable contact piece 2.
  • the movable contact piece 2 has on the upper side 6, laterally next to the contact slide 1 in each case a contact pad 7.
  • the bottom 8 of the movable contact piece 2 superimposed on a contact load spring 9.
  • the last turn of the contact load spring 9 below the movable contact piece 2 is in a spacer 10, which preferably has the height of the movable contact piece 2.
  • the spacer 10 merges into the first turn of the contact load spring 9 on the upper side 6 of the movable contact piece 2.
  • the movable contact piece 2 is mounted or clamped in a winding gap of the contact load spring 9.
  • the windings may be formed above the movable contact piece 2 with a narrowing diameter. In the turn above the movable contact piece 2 engages the preferably conical contour 5, so that the turns are fixed and guided.
  • Fig. 2 the geometry of the movable contact piece 2 is shown.
  • the movable contact piece 2 is preferably web-shaped with an upper side 6, on which in each of the two end regions 11, 12 a contact pad 7 is arranged.
  • the end portions 11, 12 of the movable contact piece 2 are preferably made slightly bent downwards.
  • projections 15, 16 are arranged, which are preferably carried out quarter-concentric.
  • the projections 15, 16 are preferably rotated by 180 ° to each other, arranged at opposite longitudinal edges 13, 14.
  • FIG. 3 an assembly of a movable contact piece 2 and a contact load spring 9 is shown. This assembled assembly of the movable contact piece 2 and the contact load spring 9 is used as a complete component in the contact slide 1.
  • the contact load spring 9 is shown.
  • the contact load spring 9 is composed essentially of two structural units.
  • the first structural unit comprises the lower part 17 of the contact load spring 9, which has numerous turns of preferably equal diameter and thus forms a cylindrical body.
  • the second structural unit of the contact load spring 9 comprises the upper part 18.
  • the upper part 18 has only a few turns, which preferably have a narrowing diameter.
  • the lower part 17 is connected to the upper part 18 of the contact load spring 9 via a spacer 10.
  • the spacer 10 allows the preferably enlarged winding gap of the contact load spring 9, so that the movable contact piece 2 can be inserted and clamped in this winding gap.
  • the contact slide unit according to the invention is characterized in that a possibility has been found by a simple change in geometry of the contact load spring, to position the movable contact piece against rotation. There are no additional parts needed for this. Also, the assembly operations can be performed as before.

Landscapes

  • Breakers (AREA)
  • Push-Button Switches (AREA)
  • Slide Switches (AREA)

Claims (8)

  1. Unité à curseur de contact pour une unité de commutation, présentant un curseur de contact (1) avec un plot de contact mobile (2) guidé dans celui-ci, lequel plot de contact est alimenté depuis sa face inférieure par un ressort de charge par contact (9), dans laquelle le plot de contact est réalisé en tant que pont, dans laquelle le plot de contact mobile (2) est logé dans un écartement de spires entre deux spires du ressort de charge par contact (9) de sorte que des spires du ressort de charge par contact (4) sont mises au-dessus et en dessous du plot de contact mobile (2), caractérisée en ce que les spires du ressort de charge par contact (9) sont guidées au-dessus du plot de contact mobile (2) par le biais d'un contour (5) dans le curseur de contact (1).
  2. Unité à curseur de contact selon la revendication 1, caractérisée en ce que le contour (5) est réalisé de manière à se terminer par un cône dans le curseur de contact (1).
  3. Unité à curseur de contact selon l'une des revendications 1 ou 2, caractérisée en ce que les spires du ressort de charge par contact (9) sont réalisées au-dessus du plot de contact mobile (2) avec un diamètre qui rétrécit.
  4. Unité à curseur de contact selon l'une des revendications 1 à 3, caractérisée en ce que, entre la dernière spire au niveau de la face inférieure (8) du plot de contact mobile (2) et la première spire au niveau de la face supérieure (6) du plot de contact mobile (2) une entretoise (10) est réalisée dans le ressort de charge par contact (9).
  5. Unité à curseur de contact selon la revendication 4, caractérisée en ce que l'entretoise (10) présente la hauteur de l'arête longitudinale (13, 14) du plot de contact mobile (2).
  6. Unité à curseur de contact selon l'une des revendications 1 à 5, caractérisée en ce que le plot de contact mobile (2) présente des saillies (15, 16) qui se font face.
  7. Disjoncteur avec une unité à curseur de contact selon l'une des revendications 1 à 6.
  8. Procédé destiné au montage d'une unité à curseur de contact pour une unité de commutation, présentant un curseur de contact (1) avec un plot de contact mobile (2) guidé dans celui-ci, lequel plot de contact est alimenté depuis sa face inférieure par un ressort de charge par contact (9), dans lequel le plot de contact est réalisé en tant que pont, avec les étapes :
    - d'installation du plot de contact mobile (2) dans un écartement de spires du ressort de charge par contact (9) de sorte que des spires du ressort de charge par contact (9) sont mises au-dessus et en dessous du plot de contact mobile (2) ;
    - d'assemblage de l'élément à partir du plot de contact mobile (2) et du ressort de charge par contact (9) dans le curseur de contact (1), caractérisé en ce que les spires du ressort de charge par contact (9) sont guidées au-dessus du plot de contact mobile (2) par le biais d'un contour (5) dans le curseur de contact (1).
EP15158551.0A 2015-03-11 2015-03-11 Unité à curseur de contact pour un interrupteur Active EP3067909B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP15158551.0A EP3067909B1 (fr) 2015-03-11 2015-03-11 Unité à curseur de contact pour un interrupteur
CN201580077592.XA CN107408465B (zh) 2015-03-11 2015-11-02 用于开关单元的接触滑块单元
PCT/EP2015/075426 WO2016142007A1 (fr) 2015-03-11 2015-11-02 Unité de poussoir-contacteur pour une unité de commande
US15/556,550 US10483051B2 (en) 2015-03-11 2015-11-02 Contact slide unit for a switching unit
BR112017019245-4A BR112017019245B1 (pt) 2015-03-11 2015-11-02 Unidade de deslizamento de contato para uma unidade de comutação, disjuntor, e, método para montar uma unidade de deslizamento de contato a uma unidade de comutação

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15158551.0A EP3067909B1 (fr) 2015-03-11 2015-03-11 Unité à curseur de contact pour un interrupteur

Publications (2)

Publication Number Publication Date
EP3067909A1 EP3067909A1 (fr) 2016-09-14
EP3067909B1 true EP3067909B1 (fr) 2017-10-18

Family

ID=52672176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15158551.0A Active EP3067909B1 (fr) 2015-03-11 2015-03-11 Unité à curseur de contact pour un interrupteur

Country Status (5)

Country Link
US (1) US10483051B2 (fr)
EP (1) EP3067909B1 (fr)
CN (1) CN107408465B (fr)
BR (1) BR112017019245B1 (fr)
WO (1) WO2016142007A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016217434B4 (de) * 2016-09-13 2023-11-16 Siemens Aktiengesellschaft Schütz oder Kompaktmotorabzweig mit einer elektromagnetischen Kontaktlastunterstützung
CN112103140B (zh) * 2019-09-29 2023-06-09 行驱电气（上海）有限公司 一种动触头组件、基座及磁保持继电器

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JP4067606B2 (ja) * 1997-09-02 2008-03-26 東洋電装株式会社 スライドスイッチ
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JP2002250911A (ja) * 2001-02-26 2002-09-06 Nec Corp 液晶モジュールと、液晶モジュールを用いたスイッチ構造
JP4433283B2 (ja) * 2004-02-06 2010-03-17 タイコエレクトロニクスジャパン合同会社 スイッチおよびこれを用いた装置
TWM303477U (en) * 2006-04-24 2006-12-21 Hon Hai Prec Ind Co Ltd Slide switch
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EP2737504A1 (fr) * 2012-03-21 2014-06-04 Siemens Aktiengesellschaft Ensemble curseur de contact pour une unité de commutation, en particulier pour un disjoncteur de puissance
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EP2989653B1 (fr) * 2013-09-13 2017-05-31 Siemens Aktiengesellschaft Contacteur avec un mécanisme de déclenchement amélioré en cas de court-circuit
EP3055872B1 (fr) * 2014-05-09 2018-09-05 Siemens Aktiengesellschaft Ensemble curseur de contact pour ensemble de commutation
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Also Published As

Publication number Publication date
US20180053605A1 (en) 2018-02-22
EP3067909A1 (fr) 2016-09-14
US10483051B2 (en) 2019-11-19
BR112017019245A2 (pt) 2018-04-24
CN107408465B (zh) 2019-09-06
WO2016142007A1 (fr) 2016-09-15
BR112017019245B1 (pt) 2022-07-19
CN107408465A (zh) 2017-11-28

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