EP0114831B1 - Mehrpoliger tastschalter - Google Patents

Mehrpoliger tastschalter Download PDF

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Publication number
EP0114831B1
EP0114831B1 EP83901353A EP83901353A EP0114831B1 EP 0114831 B1 EP0114831 B1 EP 0114831B1 EP 83901353 A EP83901353 A EP 83901353A EP 83901353 A EP83901353 A EP 83901353A EP 0114831 B1 EP0114831 B1 EP 0114831B1
Authority
EP
European Patent Office
Prior art keywords
contact
switch
cross bar
push member
spring
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
EP83901353A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0114831A1 (de
Inventor
Albert Portmann
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.)
Johnson Electric Switzerland AG
Original Assignee
Johnson Electric Switzerland AG
Sodeco Saia 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 Johnson Electric Switzerland AG, Sodeco Saia AG filed Critical Johnson Electric Switzerland AG
Publication of EP0114831A1 publication Critical patent/EP0114831A1/de
Application granted granted Critical
Publication of EP0114831B1 publication Critical patent/EP0114831B1/de
Expired legal-status Critical Current

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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
    • H01H1/20—Bridging contacts
    • H01H1/2008—Facilitate mounting or replacing contact bridge and pressure spring on carrier

Definitions

  • the invention relates to a multi-pole push button switch according to the first part of claim 1.
  • Pushbutton switches are used in many ways to indicate a state, for example an end position of a machine table, the closed state of a door, a cover or similar elements.
  • a path section for actuating a switch plunger is used directly by the movement of the part to be monitored.
  • DE-C-952 915 shows such a single-pole switch.
  • a three-pole push button switch with side-by-side switching chambers in which a plunger acts on the three switching chambers via a crossbar. A breakage of a return spring in one of the switching chambers does not lead to a forced return by the return spring of the plunger. It is also known from US-A-31 42 732 how to combine any three commercially available thermally tripping circuit breakers into a three-pole circuit breaker. It is also known (DE-C-667361) to store at least three contact bridges in a common contact bridge carrier in a latching push button switch.
  • the push button switch as a security element, e.g. B. for barriers on punching machines against unauthorized manipulation during a work process or as a door contact, in which it must be ensured that there are no longer dangerous contact voltages when the door is open, there are additional safety regulations.
  • the latter require more than a reset element actuating the switch contact on the switch itself, which is not available in the known.
  • the invention has for its object to reduce the manufacturing costs and the overall height of a multi-pole push button switch while observing the safety requirements.
  • 1 means a lower housing part of a three-pole push-button switch with an actuating plunger 2, which is mounted in a longitudinally displaceable manner both in an upper housing part 3 and in a guideway 4 (FIG. 1) of the lower housing part 1.
  • three switching chambers 5, 6, 7 are arranged side by side, each of which has a contact bridge 8, 9, 10 and two associated contact fingers 11, 12 (FIG. 2), 13.
  • the contact bridges 8, 9, 10 can be actuated from the single actuating plunger 2.
  • a cross bar 14 is formed on the inside of the upper housing part 3.
  • the contact carriers 15, 16, 17 penetrate into the individual switching chambers 5 or 6 or 7 ' and each consist of two elastic fingers, of which only two fingers 16a; 16b of the contact carrier 16 can be seen in FIG. 2.
  • the ends of the elastic fingers of each contact carrier 15, 16, 17 are each formed into a stop 18, 19, 20 (FIG. 1), of which stops 19a and 19b of the contact carrier 16 are shown in FIG.
  • On each of the contact carriers 15, 16, 17 one of the contact bridges 8 or 9 or 10 is suspended so as to rock about the middle of the bridge, for which purpose each of the contact bridges 8, 9, 10 has a central opening 21.
  • the elastic fingers of the contact carriers 15, 16, 17 each penetrate one of the contact bridges 8, 9, 10 in its opening 21 and prevent the contact bridges 8, 9, 10 with the stops 18, 19, 20 from falling out.
  • actuating plunger 2 is shown in its rest position, that is, with the key switch open.
  • each switching chamber 5, 6, 7 has its own return spring 25, 26, 27. These are supported on the one hand on the crosspiece 14 and on the other hand on Bottom of the switching chambers 5, 6, 7, that is, on the lower housing part 1.
  • To guide the return springs 25, 26, three pins 28 are formed on the lower housing part 1 and protrude into one of the switching chambers 5, 6, 7.
  • the return springs 25, 26, 27 are attached to these pins 28.
  • the strength of the return springs 25, 26, 27 is dimensioned such that if one of the return springs 25, 26, 27 fails, the spring force of the remaining return springs 25, 26, 27 is sufficient to remove the contact bridges 8, 9, 10 of all switching chambers 5, 6, 7 to open and bring the actuating plunger 2 into its rest position.
  • the actuating plunger 2 must never get stuck even under one-sided loading. It therefore has an additional lateral guide at least in the direction in which the crosspiece 14 extends.
  • it consists of two parallel ribs 29, 30 (FIG. 1) which extend between the middle contact bridge 9 and the two outer contact bridges 8 and 10 and slide along the lateral guideways 4 of the middle switching chamber 6.
  • the actuating plunger 2 Due to the double guidance of the actuating plunger 2 on the one hand in the upper housing part 3 and on the other hand in the guideways 4, the actuating plunger 2 cannot jam even if one of the outer return springs 25 or 27 fails due to a broken spring and the remaining two work alone. The remaining return springs will still be able to bring the actuating plunger 2 into its rest position.
  • spring tabs 31 are formed on the lower housing part 1 and hold the pushbutton spring in a known manner in a corresponding recess in a sheet metal plate.
  • the structure described allows the economical production of fail-safe pushbutton switches which meet the required safety regulations and which, despite low space requirements, also have the air gaps and creepage distances required for use in low-voltage networks. They are also very easy to assemble and require no special tools.

Landscapes

  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Tumbler Switches (AREA)
EP83901353A 1982-07-22 1983-05-05 Mehrpoliger tastschalter Expired EP0114831B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4476/82 1982-07-22
CH4476/82A CH656484A5 (de) 1982-07-22 1982-07-22 Mehrpoliger tastschalter.

Publications (2)

Publication Number Publication Date
EP0114831A1 EP0114831A1 (de) 1984-08-08
EP0114831B1 true EP0114831B1 (de) 1986-08-20

Family

ID=4276793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83901353A Expired EP0114831B1 (de) 1982-07-22 1983-05-05 Mehrpoliger tastschalter

Country Status (8)

Country Link
US (1) US4544815A (it)
EP (1) EP0114831B1 (it)
JP (1) JPS59501334A (it)
CH (1) CH656484A5 (it)
DE (1) DE3232338C2 (it)
FR (1) FR2530863B1 (it)
IT (1) IT1163821B (it)
WO (1) WO1984000639A1 (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3423177C1 (de) * 1984-06-22 1985-08-01 Barlian, Reinhold, Dipl.-Ing.(FH), 6990 Bad Mergentheim Elektroschalter
FR2687251B1 (fr) * 1992-02-11 1994-04-29 Telemecanique Structure de coupure pour disjoncteur.
FR2807224B1 (fr) * 2000-03-28 2003-06-06 Bull Sa Boitier de distribution de tension secteur pour appareils electroniques
US7453446B2 (en) * 2004-08-20 2008-11-18 Nokia Corporation Buttons designed for versatile use
DE102012201967B4 (de) * 2012-02-09 2019-01-17 Te Connectivity Germany Gmbh Schaltkontaktbaugruppe sowie Bausatz und Montageverfahren hierfür
DE102012201966A1 (de) * 2012-02-09 2013-08-14 Tyco Electronics Amp Gmbh Schaltkontaktbaugruppe mit Schaltkontaktbrücke und Kontaktbrückenhalter

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL40570C (it) * 1934-05-13
DE667361C (de) * 1937-12-12 1938-11-10 Aeg Mehrpoliger Druckknopfschalter fuer mindestens drei Pole
US2349616A (en) * 1942-02-18 1944-05-23 Westinghouse Electric & Mfg Co Reversing line starter interlock
DE952915C (de) * 1950-07-02 1956-11-22 Maecker Elan Schaltelemente Schubschalter, insbesondere fuer Werkzeugmaschinen mit elektrischer Steuerung
DE971322C (de) * 1951-09-20 1959-01-08 Maecker Elan Schaltelemente Schubschalter, insbesondere fuer Werkzeugmaschinen mit elektrischer Steuerung
FR64500E (fr) * 1953-07-22 1955-11-10 App Blinde Sa D Interrupteur
FR1169029A (fr) * 1956-12-21 1958-12-19 Labinal Ets Perfectionnements apportés aux appareils du genre des commutateurs et interrupteurs à poussoir ou tirette
US3018338A (en) * 1958-12-18 1962-01-23 Westinghouse Electric Corp Control switches
US3142732A (en) * 1961-12-01 1964-07-28 Texas Instruments Inc Ganged multipole circuit breaker
US3408464A (en) * 1967-05-10 1968-10-29 Stewart Warner Corp Brake switch
CA1079336A (en) * 1976-01-28 1980-06-10 Glenn R. Taylor Convertible switch
US4052582A (en) * 1976-03-08 1977-10-04 Westinghouse Electric Corporation Rotary selector switch
DE2618572C3 (de) * 1976-04-28 1979-03-15 Rudolf Schadow Gmbh, 1000 Berlin Schiebetastenschalter

Also Published As

Publication number Publication date
FR2530863A1 (fr) 1984-01-27
IT8322149A0 (it) 1983-07-20
JPH0430126B2 (it) 1992-05-20
IT8322149A1 (it) 1985-01-20
WO1984000639A1 (fr) 1984-02-16
CH656484A5 (de) 1986-06-30
DE3232338A1 (de) 1984-02-02
DE3232338C2 (de) 1984-05-17
EP0114831A1 (de) 1984-08-08
US4544815A (en) 1985-10-01
JPS59501334A (ja) 1984-07-26
IT1163821B (it) 1987-04-08
FR2530863B1 (fr) 1986-09-19

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