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EP0173756B1 - Kontaktvorrichtung - Google Patents

Kontaktvorrichtung Download PDF

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Publication number
EP0173756B1
EP0173756B1 EP84110419A EP84110419A EP0173756B1 EP 0173756 B1 EP0173756 B1 EP 0173756B1 EP 84110419 A EP84110419 A EP 84110419A EP 84110419 A EP84110419 A EP 84110419A EP 0173756 B1 EP0173756 B1 EP 0173756B1
Authority
EP
European Patent Office
Prior art keywords
contact
push
rod
plunger
sides
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.)
Expired
Application number
EP84110419A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0173756A1 (de
Inventor
Heinz Kleine
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.)
Square D Starkstrom GmbH
Original Assignee
Square D Starkstrom 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 Square D Starkstrom GmbH filed Critical Square D Starkstrom GmbH
Priority to EP84110419A priority Critical patent/EP0173756B1/de
Priority to DE8484110419T priority patent/DE3475739D1/de
Priority to AT84110419T priority patent/ATE39394T1/de
Priority to ES546022A priority patent/ES8700491A1/es
Priority to CA000489383A priority patent/CA1256478A/en
Priority to US06/770,640 priority patent/US4616117A/en
Publication of EP0173756A1 publication Critical patent/EP0173756A1/de
Application granted granted Critical
Publication of EP0173756B1 publication Critical patent/EP0173756B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S200/00—Electricity: circuit makers and breakers
    • Y10S200/42—Contact welding considerations

Definitions

  • the invention relates to a contact device with a plunger which is longitudinally displaceable in the housing against the force of a compression spring and which has one or more recesses, a contact bridge with movable contact pieces and a contact pressure spring projecting on both sides of the recess being arranged in each recess, and wherein the movable contact pieces cooperate with the formation of openers and / or closers with fixed contact pieces, a component cooperating with the contact bridge being provided in such a way that positive opening of adhesive or welded contacts between the movable and fixed contact pieces is ensured.
  • Contact devices of this type can be found in practice in many switchgear with a wide variety of designs and uses.
  • the limit switches manufactured in large numbers in practice should be mentioned here only as an example.
  • These contact devices have in common that there is either a tappet, which is actuated either by hand or usually by machine, and which simultaneously serves as a contact bridge support.
  • a tappet which is actuated either by hand or usually by machine, and which simultaneously serves as a contact bridge support.
  • only one contact bridge is present, while in other switching devices, several contact bridges are provided one above the other and / or next to one another.
  • the actuation stroke of the plunger or contact bridge support must be greater than the working stroke of the contact bridges with the movable contact pieces.
  • the contact pressure between the movable and fixed contact pieces can not correspond to the actuating force that acts on the plunger.
  • a pressure spring is present in the known contact devices, which returns the plunger to its rest position after it has been actuated and holds it there, and on the other hand, a contact pressure spring is inserted into a recess in the plunger for each contact bridge with the latter. These springs precisely determine the required and desired contact pressure. Each contact bridge is thus held in the recess of the plunger so that it can move under the pressure of the contact pressure spring.
  • the invention has for its object to provide a contact device while maintaining the previously explained advantages, which requires very little material and manufacturing costs and is particularly suitable for mass production.
  • the component is designed as a U-shaped bracket and is inserted with its web between the contact bridge and the contact pressure spring, and that the legs of the bracket and stepped extensions in the adjacent housing surfaces are designed such that the bracket and the contact bridge is forcibly carried along by this over a first part of the stroke of the plunger and the legs of the bracket spread outward over the further part of the stroke and release the plunger.
  • the contact device shown in simplified form in the drawing as an exemplary embodiment has a housing 1 and a housing insert 2, the construction of which is such that simple assembly of all the individual parts of the contact device is possible.
  • the ends 5 and 7 of the contact connection rails 3 and 4 are folded inwards and carry fixed contact pieces 6 and 8 on the underside.
  • the ends 11 and 13 of the contact connection rails 9 and 10 are folded outwards as shown and carry fixed contact pieces 12 and 12 on the upper side. 14.
  • a substantially rectangular switching chamber 15 is formed within the housing 1, 2, within which the contact bridge 39 explained below can move.
  • a plunger 16 is guided in a longitudinally displaceable manner in the housing 1, 2.
  • guides 17, 18 or 19, 20 or guide surfaces are provided in the housing parts 1, 2, wherein the displacement path of the plunger 16 can be limited by stops not shown on both sides.
  • the plunger has a substantially rectangular continuous recess 25, in which a contact pressure spring 26 is arranged in the direction of displacement of the plunger 16, which is designed as a coil spring in this embodiment. Furthermore, in the recess 25, namely below the lower end of the contact pressure spring 26, there is a movable contact bridge 39 (FIG.
  • the recess 25 there is also an upwardly opening U-shaped bracket 27 with a horizontal web 30 in the position shown and two legs 28 and 29 leading upwards, in such a way that the web 30 is located between the contact bridge 39 and the lower end of the contact pressure spring 26.
  • the upper outer ends 31 and 32 of the legs 28 and 29 are advantageously angled outwards and lie on the adjacent edges 38 formed by the recess 25 when the plunger 16 is in the rest position according to FIG. 1 and during the first part of the shock stroke, which will be explained in more detail below of the plunger 16.
  • the edges 38 are chamfered at an angle of approximately 30 ° to 50 ° to the direction of movement of the plunger 16 or, if necessary, also rounded.
  • two mutually stepped extensions 33 and 35 or 34 and 36 are provided on the two sides in the direction of movement of the plunger 16.
  • the transition surfaces 37 between the two associated extensions are inclined, namely at an angle of about 30 ° to 50 ° to the direction of movement of the ram.
  • the actual surfaces of the extension 33, 34, 35 and 36 run parallel to the direction of movement of the ram.
  • the bracket 27 is made of resilient material, e.g. B. spring steel or possibly also made of brass or the like. Formed and shaped according to the rest position according to FIG. 1, so that the expansion of the legs 28, 29 explained below takes place during the movement stroke of the plunger 16 against the inherent spring force.
  • suitable retaining means can be provided between suitable positions of the plunger 16 and the bracket and the contact bridge, such as, for. B. beads or pin-like projections and holes that interlock, or grooves or guide strips on the parallel to the image surface of FIG. 1 extending boundary surfaces of the recess 25th
  • the bracket 27 is initially forcibly carried by the plunger over a first part of the stroke, since the angled ends 31 and 32 of the legs 28 and 29 of the bracket rest on the edges 38 of the plunger and the extensions 33 and 34 are dimensioned so that the legs of the bracket cannot escape to the outside. But this is also forcibly carried the contact bridge 39, so that any adhesive or welded contacts are forcibly opened.
  • the legs 28 and 29 of the bracket 27 can spread outwards because these extensions 35 and 36 have a greater width , namely such a width that the outwardly spread legs release the plunger 16 for further downward movement, as shown in Fig. 3.
  • the contact bridge 39 comes with the movable contact pieces 41 and 43 to the fixed contact pieces 12 and 14.
  • the contact pressure is determined by the contact pressure spring 26 and not by the force exerted on the plunger 16.
  • the plunger 16 can finally be moved freely over the remaining stroke.
  • the compression spring 22 causes the moving parts to return to the rest position according to FIG. 1.
  • the housing construction explained above can also be carried out differently.
  • the housing can also consist of two other halves or housing parts which are formed by parting planes perpendicular to the image plane or parallel to the image plane according to FIGS. 1 and 3.
  • the power connection rails 3, 4, 9 and 10 can be designed differently, for. B. after the two opposite side faces and be provided with contact terminal screws.
  • only one recess 25 is shown and described in the plunger 16.
  • several recesses with inserted contact bridges, U-shaped brackets etc. can also be provided next to one another and / or one above the other in a common plunger as described.
  • the contacts as such can optionally be designed as openers or closers.
  • the housing 1 has a housing insert 2.
  • the housing can advantageously also consist of only a single block, i. H. that the housing insert 2 shown as a separate part can be produced in one piece with the housing 1. For this you can the contact terminal rails 3, 4 and 9, 10 with their fixed contact pieces z. B. put in an injection mold and then, as I said, pour the housing in a block.

Landscapes

  • Push-Button Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
  • Breakers (AREA)
EP84110419A 1984-09-01 1984-09-01 Kontaktvorrichtung Expired EP0173756B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP84110419A EP0173756B1 (de) 1984-09-01 1984-09-01 Kontaktvorrichtung
DE8484110419T DE3475739D1 (en) 1984-09-01 1984-09-01 Contact device
AT84110419T ATE39394T1 (de) 1984-09-01 1984-09-01 Kontaktvorrichtung.
ES546022A ES8700491A1 (es) 1984-09-01 1985-08-09 Dispositivo de contacto
CA000489383A CA1256478A (en) 1984-09-01 1985-08-26 Contact device
US06/770,640 US4616117A (en) 1984-09-01 1985-08-28 Double pole circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84110419A EP0173756B1 (de) 1984-09-01 1984-09-01 Kontaktvorrichtung

Publications (2)

Publication Number Publication Date
EP0173756A1 EP0173756A1 (de) 1986-03-12
EP0173756B1 true EP0173756B1 (de) 1988-12-21

Family

ID=8192136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110419A Expired EP0173756B1 (de) 1984-09-01 1984-09-01 Kontaktvorrichtung

Country Status (6)

Country Link
US (1) US4616117A (es)
EP (1) EP0173756B1 (es)
AT (1) ATE39394T1 (es)
CA (1) CA1256478A (es)
DE (1) DE3475739D1 (es)
ES (1) ES8700491A1 (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3601482C1 (de) * 1986-01-20 1987-04-09 Triumph Adler Ag Farbbandkassette
US5145057A (en) * 1989-04-20 1992-09-08 Fuji Electric Corporation, Ltd. Auxiliary contact unit for an electromagnetic switch
US5278369A (en) * 1992-06-30 1994-01-11 Bremas S.P.A. Electrical operating device with contact-holding slider in two parts
US5304753A (en) * 1993-06-29 1994-04-19 Eaton Corporation Electric switch with welded contact sensor lockout
US7400477B2 (en) * 1998-08-24 2008-07-15 Leviton Manufacturing Co., Inc. Method of distribution of a circuit interrupting device with reset lockout and reverse wiring protection
DE102006041451B4 (de) * 2006-09-04 2009-01-08 Siemens Ag Schaltgerät und Hilfskontaktblock zur Erweiterung eines Schaltgerätes
CN200993948Y (zh) * 2006-11-14 2007-12-19 上海益而益电器制造有限公司 安全型接地故障断路器
DE102006055007A1 (de) * 2006-11-22 2008-05-29 Abb Ag Installationsschaltgerät mit einer Doppelunterbrechung
CN101453113B (zh) * 2007-12-07 2011-02-09 上海益而益电器制造有限公司 具有电路状态检测功能的接地故障断路装置
DE102008016036A1 (de) * 2008-03-28 2009-10-01 Abb Ag Installationsschaltgerät mit einer Doppelunterbrechung
CN201181681Y (zh) 2008-04-14 2009-01-14 上海益而益电器制造有限公司 脱扣装置和带有这种装置的漏电保护插座
MX2010013886A (es) 2008-07-07 2011-02-15 Leviton Manufacturing Co Dispositivo interruptor de circuito de falla.
JP5214497B2 (ja) * 2009-03-09 2013-06-19 ナイルス株式会社 プッシュスイッチ
CN101867181A (zh) * 2009-04-16 2010-10-20 上海益而益电器制造有限公司 接线保护装置
US9218926B1 (en) * 2013-03-15 2015-12-22 E.M.B. Corporation Normally-closed switch with positive stops
US10115555B1 (en) * 2015-12-15 2018-10-30 Amazon Technologies, Inc. Electrical switch for a load in a vehicle

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1154553B (de) * 1961-06-27 1963-09-19 Licentia Gmbh Kontakttraeger mit beweglichen Kontakten, z. B. bei elektrischen Leistungsschaltern
FR2050648A5 (es) * 1969-06-19 1971-04-02 Schaltbau Gmbh
DE1765223B1 (de) * 1968-04-20 1971-04-15 Stotz Kontakt Gmbh Kontakttraeger mit fenster fuer die aufnahme einer kontakt bruecke
DE1935225B2 (de) * 1969-07-11 1971-12-23 Siemens AG, 1000 Berlin u 8000 München Elektrischer schnappschalter
DE2659481A1 (de) * 1976-12-30 1978-07-06 Heinrich Kissling Elektrische grenztastschaltvorrichtung
US4154996A (en) * 1977-05-12 1979-05-15 Mcgraw-Edison Company Positive break snap action switch
DE3070651D1 (en) * 1980-10-24 1985-06-20 Square D Starkstrom Gmbh Contact device

Also Published As

Publication number Publication date
ATE39394T1 (de) 1989-01-15
US4616117A (en) 1986-10-07
ES546022A0 (es) 1986-10-01
EP0173756A1 (de) 1986-03-12
ES8700491A1 (es) 1986-10-01
CA1256478A (en) 1989-06-27
DE3475739D1 (en) 1989-01-26

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