EP0173756A1 - Dispositif de contact - Google Patents

Dispositif de contact Download PDF

Info

Publication number
EP0173756A1
EP0173756A1 EP84110419A EP84110419A EP0173756A1 EP 0173756 A1 EP0173756 A1 EP 0173756A1 EP 84110419 A EP84110419 A EP 84110419A EP 84110419 A EP84110419 A EP 84110419A EP 0173756 A1 EP0173756 A1 EP 0173756A1
Authority
EP
European Patent Office
Prior art keywords
contact
plunger
bracket
legs
contact device
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
EP84110419A
Other languages
German (de)
English (en)
Other versions
EP0173756B1 (fr
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/fr
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/fr
Priority to US06/770,640 priority patent/US4616117A/en
Publication of EP0173756A1 publication Critical patent/EP0173756A1/fr
Application granted granted Critical
Publication of EP0173756B1 publication Critical patent/EP0173756B1/fr
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 a tappet, which is operated either by hand or usually by machine, and which simultaneously serves as a contact bridge carrier.
  • Some switching devices have only one contact bridge, while other switching devices have several contact bridges one above the other and / or are provided side by side.
  • 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 in 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, the displacement path of the tappet 16 can be limited by not shown bilateral stops.
  • 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 advantageous angled outward and are in contact with the adjacent edges 38 of the plunger 16 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 plunger stroke, which will be explained in more detail below.
  • the edges 38 as particularly Fig. 3 makes clear an angle of approximately 30 ° to 50 0 chamfered or to the movement direction of the plunger 16 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 formed obliquely, at an angle of about 30 0 to 50 0 to the direction of movement of the plunger.
  • 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 formed from resiliently elastic material, for example spring steel or possibly also from brass or the like, and is shaped according to the rest position according to FIG. 1, so that the spreading of the legs 28, 29 explained below during the movement stroke of the ram 16 against the inherent spring force.
  • suitable stops can be provided between suitable positions of the plunger 16 and the bracket and the contact bridge Extensions are provided, such as beads or pin-like projections and holes that interlock, or grooves or guide strips on the boundary surfaces of the recess 25 running parallel to the image surface of FIG. 1.
  • 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 bear against the edges 38 of the plunger and the extensions 33 and 34 are dimensioned such 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 rest on 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 be returned 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 also be designed differently, for example led out to the two opposite side surfaces and provided with contact connection screws there.
  • only one recess 25 is shown and described in the plunger 16.
  • P n can also have several cutouts with inserted contact bridges, U-shaped brackets, etc., as described next to one another and / or one above the other in one ge common plunger are provided.
  • P n can also have several cutouts with inserted contact bridges, U-shaped brackets, etc., as described next to one another and / or one above the other in one ge common plunger are provided.
  • a common contact bridge holder 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.e. that the housing insert 2 shown as a separate part can be produced in one piece with the housing 1. You can do this with the contact connecting bars 3, 4 and 9, 10 with their fixed contact pieces e.g. place in an injection mold and then, as I said, pour the housing in a block.

Landscapes

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

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP84110419A EP0173756B1 (fr) 1984-09-01 1984-09-01 Dispositif de contact
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 (fr) 1984-09-01 1985-08-26 Dispositif de contact
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 (fr) 1984-09-01 1984-09-01 Dispositif de contact

Publications (2)

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

Family

ID=8192136

Family Applications (1)

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

Country Status (6)

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

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
WO2010005987A2 (fr) 2008-07-07 2010-01-14 Leviton Manufacturing Company, Inc Dispositif interrupteur de circuit sur défaut
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH488267A (de) * 1968-04-20 1970-03-31 Stotz Kontakt Gmbh Kontaktträger mit in seinem Fenster angeordneter Kontaktbrücke
FR2050648A5 (fr) * 1969-06-19 1971-04-02 Schaltbau Gmbh
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
EP0050675A1 (fr) * 1980-10-24 1982-05-05 Square D Starkstrom GmbH Dispositif de contacts

Family Cites Families (2)

* 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
DE1935225B2 (de) * 1969-07-11 1971-12-23 Siemens AG, 1000 Berlin u 8000 München Elektrischer schnappschalter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH488267A (de) * 1968-04-20 1970-03-31 Stotz Kontakt Gmbh Kontaktträger mit in seinem Fenster angeordneter Kontaktbrücke
FR2050648A5 (fr) * 1969-06-19 1971-04-02 Schaltbau Gmbh
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
EP0050675A1 (fr) * 1980-10-24 1982-05-05 Square D Starkstrom GmbH Dispositif de contacts

Also Published As

Publication number Publication date
US4616117A (en) 1986-10-07
ES8700491A1 (es) 1986-10-01
ATE39394T1 (de) 1989-01-15
EP0173756B1 (fr) 1988-12-21
DE3475739D1 (en) 1989-01-26
CA1256478A (fr) 1989-06-27
ES546022A0 (es) 1986-10-01

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