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US2827523A - Fume-proof electric switch device - Google Patents

Fume-proof electric switch device Download PDF

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Publication number
US2827523A
US2827523A US586143A US58614356A US2827523A US 2827523 A US2827523 A US 2827523A US 586143 A US586143 A US 586143A US 58614356 A US58614356 A US 58614356A US 2827523 A US2827523 A US 2827523A
Authority
US
United States
Prior art keywords
socket
plug
switch
pin
contact
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 - Lifetime
Application number
US586143A
Other languages
English (en)
Inventor
Heuberger Otto
Mayer Paul
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.)
BASF Schweiz AG
Original Assignee
Ciba 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 Ciba AG filed Critical Ciba AG
Application granted granted Critical
Publication of US2827523A publication Critical patent/US2827523A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
    • H01R13/7036—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part the switch being in series with coupling part, e.g. dead coupling, explosion proof coupling
    • 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
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/042—Explosion-proof cases

Definitions

  • the protection should be so thorough as to be effective against the continuous presence of explosive gases for periods of days. It is sufficient so to construct the electric switch devices that, for a period of a few hours, explosive gas mixtures cannot penetrate by difiusion from the exterior into the interior of the closed device although the closure may not be absolutely tight.
  • the present invention provides a fume-proof electric switch device, which comprises a quick break switch having contact elements which are closed and opened upon the movement of a rockable lever past a dead centre position, an enclosure within which the said switch is housed so as to be substantially inaccessible to gases, and a control member which is movable to transmit motion from outside the enclosure to the rockable lever therein for closing and opening the contact elements, the said movable control member being located so as to prevent substantial diffusion of gases to the interior of the enclosure.
  • a switch device in accordance with the invention is combined with the socket portion of a plug and socket connector, and the said control member is movably mounted so as to transmit motion to the rockable lever by way of a substantially difiusion-resisting guide or bore.
  • the arrangement may be such that the plug portion does not move the control member until the plug portion is almost completely inserted.
  • control member actuating the quick break switch advantageously takes the form of a pin movable parallel to the axis of the socket portion, and advantageously provided in the axis of a socket and guided in a manner substantially resistant to gas difiusion, such as a closely fitting bore of suflicient length.
  • Fig. l is a plan view of the socket portion of a plug and socket connector having a safety earth connection and with the protective cover removed,
  • Fig. 2 is a section taken on the line II in Fig. 1 with the quick break switch closed
  • Fig. 3 is a section. taken on the line II in Fig. 1 with the quick break switch open,
  • Fig. 4 shows a plan view of the quick break switch only
  • Fig. 5 shows a modification in the form of a tumbler switch having a manually operable lever.
  • FIG. 11 denotes a cylindrical supporting base made of a suitable insulating material, for example, an artificial resin or more especially a ceramic material and having a strong upwardly directed supporting surface.
  • a cover plate 12 which, when the apparatus is completely assembled, is fixed in a suitable manner, for example, by glue or cement, a practically air-tight closed space is formed, which contains the quick break switch.
  • 011 the supporting surface of the base are fixed, for example, by screws terminals 13 for the two poles of the current and a terminal 14 for the earth lead.
  • a control member in the form of a pin 17 which is axially slidable in the base with little'play.
  • the pin is shown in its lowermost position and in Figure 3 in its uppermost position.
  • the lower part of the pin 17 is housed within a space which is closed air-tight by means of an extensible bellows 13.
  • the bellows 18 are in the extended position and in Fig. 3 in the collapsed position.
  • the pin 17 and bellows 18 are in contact with a rocking lever 19.
  • the latter is rockable about a spindle 20 which is fixed in a frame 21.
  • the frame is fixed to and in metallic contact with the terminals 13.
  • a spring 22 By means of a spring 22 the rocking lever is pressed into the upper position shown in Fig. 3, provided that the pin 17 through the bellows 18 does not depress the lever 19 into its lowermost position under the influence of an external force, namely upon the insertion of the plug pin 45.
  • the rocking lever 19 has a lower part 23 which terminates in a notch 24, in which a contact lever 25 is held by a spring 26.
  • This contact lever carries at its other end a contact head 27 which together with a contact head 28 makes and breaks contact with the socket 15.
  • the contact bead 28 is fixed to and in metallic contact with the socket 15 through a metal member 29 and screw 30.
  • the operation of the switch device is as follows:
  • the device of this invention is protected against any unintended separation of the terminal 13 from the wire 43 (for example, through some vibration or percussion). This is accomplished by providing theterminal 13 with a cap, screw 31 inside of which are a spring 32 and a pin 33 which'hold 'wire 43 in position. As a result, when the cap screw 31 is slightly loosened the wire 43 is still held in place by the spring 32 and the pin 33, so that no sparking can occur.
  • FIG. 1 Figure illustrates the same principle as applied to an ordinary manually operated tumbler switch.
  • the pin 17 is in this case operated by the switch lever 35 which is mounted .eccentrically on a pivot 34.
  • the positions of the parts when the pin 17 is in its uppermost position, are shown in fulllines, and in broken lines when the pin is in its lowermost position in which the circuit is broken.
  • the quick break switch itself is constructed in the same manner asin Figs. 2' and 3, so that it is only incompletely shown in.Fig..5. n
  • the switch device shown in Figs. 1-5 may be modified in certain respects.
  • the bellows 18, may be dispensed with by arranging that the pin 17 shall move in its guide or bore with very little play.
  • the contact head 28 instead of connecting the contact head 28 to the socket which receives a plug,-it may be connected to the'terminal 13, and in this .case it is not necessary to construct the pin 17 of insulating material, because immediately after the contact 27, 28. parts of the switch device are free from current.
  • a 1 p I inally, instead of the notch 24, there may be provided a pivot.
  • the quick break switch and its enclosure shown in Figs. 1 to 3 may be built into the socket portion of a wall plug and socket happen due to exceptionally unfavorable circumstances.
  • a plug and socket connector having connecting' means accessible from theoutside for inserting a connecting plug, a base portion carrying said connecting means and being of customary size and dimensions but forming a hollow bottom portion, a quick breaking switch in the circuit between the main line and one of the connecting means, and located in said hollow space, and a cover forming together with said hollow base portion an enclosure within which said switch is housed so as to be substantially unaccessible to gases, and a control member, movable to transmit motion from outside the enclosure'to said switch for opening or closing it, said movable member being located so as to prevent substantial diffusion of gases to the interior of the enclosure, said control member being actuated by insertion of the connecting plug in such a manner that the plug makes electrical connection with the socket before the switch is actuated, the entire connector having a size not exceeding that of a conventionalplug and socket connector so that'it may be mounted in a housing in place of such a conventional connector.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Mechanisms For Operating Contacts (AREA)
US586143A 1955-05-23 1956-05-21 Fume-proof electric switch device Expired - Lifetime US2827523A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH824117X 1955-05-23

Publications (1)

Publication Number Publication Date
US2827523A true US2827523A (en) 1958-03-18

Family

ID=4539741

Family Applications (1)

Application Number Title Priority Date Filing Date
US586143A Expired - Lifetime US2827523A (en) 1955-05-23 1956-05-21 Fume-proof electric switch device

Country Status (4)

Country Link
US (1) US2827523A (fr)
CH (1) CH336111A (fr)
FR (1) FR1157309A (fr)
GB (1) GB824117A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280278A (en) * 1964-11-18 1966-10-18 Pyle National Co Interlocking plug and receptacle electrical connector
EP0561317A2 (fr) * 1992-03-19 1993-09-22 ABBPATENT GmbH Appareil anti-déflagrant, notamment lampe
US5352128A (en) * 1991-10-31 1994-10-04 Itt Industries, Inc. Connection assembly with fast break switches
US5426552A (en) * 1991-07-08 1995-06-20 Aditan, Inc. Electrical supply safety socket
US5485340A (en) * 1991-07-08 1996-01-16 Aditan, Inc. Electrical supply safety plug
EP1845541A2 (fr) * 2006-04-13 2007-10-17 Rohde & Schwarz GmbH & Co. KG Dispositif d'actionnement destiné à la commutation d'une connexion électrique conductrice

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH375771A (de) * 1959-12-11 1964-03-15 Baumer Herbert Elektrischer Schalter
US3043928A (en) * 1961-03-01 1962-07-10 Illinois Tool Works Snap switch
FR2412181A1 (fr) * 1977-12-16 1979-07-13 Richier Paul Prise de courant femelle anti-electrocution
FR2481010A1 (fr) * 1980-04-17 1981-10-23 Osmond Max Prise de courant a securite croisee
FR2531577A1 (fr) * 1982-08-09 1984-02-10 Marechal Sepm Contact electrique a pression a pouvoir de fermeture et d'ouverture incorpore
IN165839B (fr) * 1985-02-05 1990-01-20 Haden D H Ltd
GB8717626D0 (en) * 1987-07-24 1987-09-03 Strix Ltd Hot water jug
GB8811774D0 (en) * 1988-05-18 1988-06-22 Haden D H Ltd Switched electrical socket connector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612711A (en) * 1923-04-28 1926-12-28 Hugo Tillquist Electrical switch
US1731893A (en) * 1927-06-04 1929-10-15 Fischer Carl Electric connecter
GB634753A (en) * 1947-11-25 1950-03-29 Walter Hugh Blois Improvements in or relating to electric switch actuating devices
DE862190C (de) * 1944-01-29 1953-01-08 Westfaelische Berggewerkschaft Schlagwetter- und explosionsgeschuetzte Fassung fuer Gluehlampen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612711A (en) * 1923-04-28 1926-12-28 Hugo Tillquist Electrical switch
US1731893A (en) * 1927-06-04 1929-10-15 Fischer Carl Electric connecter
DE862190C (de) * 1944-01-29 1953-01-08 Westfaelische Berggewerkschaft Schlagwetter- und explosionsgeschuetzte Fassung fuer Gluehlampen
GB634753A (en) * 1947-11-25 1950-03-29 Walter Hugh Blois Improvements in or relating to electric switch actuating devices

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280278A (en) * 1964-11-18 1966-10-18 Pyle National Co Interlocking plug and receptacle electrical connector
US5426552A (en) * 1991-07-08 1995-06-20 Aditan, Inc. Electrical supply safety socket
US5485340A (en) * 1991-07-08 1996-01-16 Aditan, Inc. Electrical supply safety plug
US5352128A (en) * 1991-10-31 1994-10-04 Itt Industries, Inc. Connection assembly with fast break switches
EP0561317A2 (fr) * 1992-03-19 1993-09-22 ABBPATENT GmbH Appareil anti-déflagrant, notamment lampe
EP0561317A3 (fr) * 1992-03-19 1995-04-19 Ceag Sicherheitstechnik Gmbh
EP1845541A2 (fr) * 2006-04-13 2007-10-17 Rohde & Schwarz GmbH & Co. KG Dispositif d'actionnement destiné à la commutation d'une connexion électrique conductrice
EP1845541A3 (fr) * 2006-04-13 2009-04-29 Rohde & Schwarz GmbH & Co. KG Dispositif d'actionnement destiné à la commutation d'une connexion électrique conductrice

Also Published As

Publication number Publication date
FR1157309A (fr) 1958-05-28
GB824117A (en) 1959-11-25
CH336111A (de) 1959-02-15

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