US3843854A - Switch-incorporating plug socket - Google Patents

Switch-incorporating plug socket Download PDF

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Publication number
US3843854A
US3843854A US00400119A US40011973A US3843854A US 3843854 A US3843854 A US 3843854A US 00400119 A US00400119 A US 00400119A US 40011973 A US40011973 A US 40011973A US 3843854 A US3843854 A US 3843854A
Authority
US
United States
Prior art keywords
plug
socket
mount
guide rod
tapped sleeve
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
US00400119A
Other languages
English (en)
Inventor
S Mori
A Takada
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.)
MORI DENKI Manufacturing CO Ltd
Original Assignee
MORI DENKI Manufacturing CO Ltd
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 MORI DENKI Manufacturing CO Ltd filed Critical MORI DENKI Manufacturing CO Ltd
Application granted granted Critical
Publication of US3843854A publication Critical patent/US3843854A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H01H13/18—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
    • H01H13/40—Blade spring with at least one snap-acting leg and at least one separate contact-carrying or contact-actuating leg
    • 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

Definitions

  • SWITCH-INCORPORATING PLUG SOCKET lnventors Shiniiro Mori, Tokyo; Akitoshi Takada, Yokohama, both of Japan Assignee: Mori Denki Manufacturing Co.,
  • the switch-incorporating plug socket comprises a socket having an interlocking switch provided in a closed compartment thereof, a plug adapted to be inserted into said socket and a union joint for intercoupling said socket and said plug, and is so designed that it establish an electrical connection between an electric equipment connected thereto and a power source only when the union joint is screwed in 'the intercoupling direction after the plug is inserted into the socket, so that outward discharge otherwise occurring at the engagement or disengagement of the plug socket is prevented and the power can be supplied safely even at a location where there is the danger of explosion.
  • an enclosed type plug socket or explosion-proof type plug socket is usually used for supplying power to the electric equipment therethrough.
  • the conventionally used enclosed type, switchincorporated plug and socket has an interlocking switch provided therein and is so designed that the switch is actuated to supply a current to the associated electric equipment when a union joint is screwed in a direction to intercouple the plug and socket after the plug is inserted into the socket, whereby outward discharge otherwise occurring at the engagement or disengagement of the plug and socket is prevented.
  • the engagement or disengagement of the plug is possible under no voltage, so that accidents arising from electric shock can be prevented and power supply can be achieved safely.
  • the present invention consists in an enclosed type, switch-incorporated plug socket which is provided therein an interlocking switch and designed such that the switch is actuated to conduct a current when a union joint is screwed in a direction to intercouple the plug and socket after the plug is inserted into the socket, and the object of the invention is to provide a switch-incorporated plug socket of the type described in which improvements are made in the switch portion and which is simple in construction as a whole, easy to manufacture and assemble, and inexpensive and economical.
  • FIG. 1 is a perspective view of the whole switchincorporated plug socket of the present invention as assembled
  • FIG. 2 is a perspective view showing explicitly the component parts of the plug socket shown in FIG. 1;
  • FIG. 3 is a plan view of the entire switchincorporated plug socket of the invention as assembled
  • FIG. 4 is a sectional view of the switch-incorporated plug socket of the invention, with the plug and the socket being disengaged;
  • FIG. 5 is a sectional view of the switch-incorporated plug socket of the invention, with the plug being inserted into the socket;
  • FIG. 6 is a perspective view showing the manner in which the switch-incorporated plug socket of the invention is actually used.
  • FIG. 6 is illustrated the manner in which the switch-incorporated plug socket of the invention is actually used.
  • cords 2 are inserted from both sides into a bottomed box 1 which can be fixed to a wall surface or post and on which the switch-incorporated plug socket of the invention is mounted.
  • the plug socket of the invention comprises a plug 4 and a socket 3 and and establishes an electrical connection between an electric equipment (not shown) connected to the plug 4 by a cord 5 and a power source to supply a current from said power source to said electric equipment when the plug 4 is inserted into the socket 3.
  • a main body 10 of the socket is provided with a flange 11 by which the socket is fixed to the box 1 and with a tapped sleeve 12 on one side of said flange.
  • a mount 13 made of an electrically insulating material is fixed to the flange 11 by means of screws 14, 14 on the side opposite to the tapped sleeve 12.
  • a cavity 15 is formed in a portion of the mount 13 extending into the tapped sleeve, said cavity being open in the same direction as the direction in which said tapped sleeve is open.
  • Two cylindrical plug receiving members 16, 16 are connected to the underside of the mount 13 within the cavity 15 by means of bolts 17, 17 said plug receiving members being open in the same direction as the direction in which said tapped sleeve is open.
  • Metal strips 18, 18 are fixed to the surface of the mount 13 opposite to the cavity 15 by means of the bolts 17, 17 by which the plug receiving members are secured. Thus, the metal strips 18 and the plug receiving members 16 are electrically connected with each other. Terminal plates 19, 19 are also fixed to the mount 13 at positions opposite to the metal strips 18, 18 respectively, with their cord connecting portions 20, 20 projecting outwardly from the mount 13.
  • a guide rod 21 is slidably extended through the center of the mount 13 in parallel to the plug receiving members 16, 16 with end thereof projecting into the cavity 15.
  • This guide rod 21 has a large diameter portion 22 projecting above the mount 13 and is provided with an annular groove 23 perpendicular to the axis of the large diameter portion.
  • Side plates 24, 24 extending parallel to the plug receiving members are fixed to the opposite side walls of the mount 13 parallel to the sets of the metal strip 18 and terminal plate 19 respectively at portions thereof, with the other portions projecting above the mount 13.
  • the side plates 24, 24 respectively are formed with openings 25, 25 and a pressing plate 26 of an electrically insulating material is disposed horizontally with the opposite ends thereof respectively received in the openings 25, 25 of said two opposed side plates.
  • the pressing plate 26 is formed with a longitudinally elongate large opening 27 at the central portion and transverse grooves 28, 28 at the opposite end portions thereof.
  • the pressing plate 26 has connected to the underside thereof facing the mount 13 contactor strips 29, 29 each of which is adapted to be brought into contact concurrently with the metal strip 18 and terminal plate 19.
  • the small diameter upper portion of the guide rod 21 is extended in the opening 27 of said pressing plate and its top end is loosely received in a hole formed in a bracket 31 which .is fixed to the mount 13, and a spring 30 is mounted around the small diameter portion of said guide rod, whereby said guide rod is constantly urged towards the tapped sleeve.
  • Leaf springs 32, 32 respectively have one ends anchored in the grooves 28, 28 of the pressing plate 26 and the other ends in the annular groove 23 of the guide rod 21. These leaf springs serve to move the pressing plate away from the mount when the guide rod 21 is pushed towards the tapped sleeve, and to move the same towards the mount when the guide rod is pushed in the opposite direction.
  • the socket In the use of the socket of the construction described above, cords (not shown) are connected to the terminal plates 19, 19 on the mount 13 respectively.
  • the socket is convered by a transparent cover 33, with the cord connecting portions of the terminal plates only protruding outwardly from said cover.
  • a main body 34 of the plug is made of an electrically insulating material and provided with slots 35, 35 for receiving the plug receiving members 16, 16, said slots being open in the plug inserting direction. Terminals 37, 37 are provided on the main body 34 at locations opposite to the openings of the slots.
  • a plug cover 38 is connected to the main body 34 of the plug and a plug union 39 is mounted around said plug cover 38 for meshing engagement with the tapped sleeve 12.
  • the socket 3 is fixed to the box 1 as shown in FIG. 6 and the plug socket becomes conductive when the plug 4 is inserted into the socket 3.
  • the plug union 39 is rotated in the intercoupling direction, whereby the main body of the plugmoves into the socket and pushes the guide rod 21 by the end wall of the main body of the plug where the slots are formed, so that said guide rod 21 moves in the opposite direction to the tapped sleeve 12 against the spring 30.
  • the leaf springs 32, 32 hold the pressing plate 26 away from the mount 13 while the guide rod 21 is being urged towards the tapped sleeve 12, but cause it to move towards the mount 13 when the guide rod 21 is moved in the opposite direction to the tapped sleeve.
  • the plug union 39 is rotated in the opposite direction to the case described above and the plug main body is pulled off the socket, whereupon the guide rod 21 is moved towards the tapped sleeve 12 by the spring 30, so that the pressing plate 26 is moved away from the mount 13 and the electrical connection between the metal strips 18 and the terminal plates 19 is severed.
  • a switch-incorporated plug socket comprising a socket having a main body provided with a tapped sleeve, a mount of electrically insulating material fixed to the main body on the opposite side to said tapped sleeve, a plurality of plug receiving members fixed to one end of said mount within said tapped sleeve and respectively opening in the same direction as the direction in which said tapped sleeve is open, rnetalstrips fixed on said mount and electrically connected with said plug receiving members respectively, terminal plates fixed on said mount at locations opposite to said metal strips respectively, a guide rod slidably extending through the center of said mount in parallel to the plug receiving members with one end thereof protruding into said tapped sleeve, said guide rod being enlarged in diameter at the central portion thereof and formed with an annular groove at said enlarged diameter portion perpendicular to the axis thereof, side plates fixed in opposed relation to the opposite side walls of said mount parallel to said metal strips and terminal plates with portions thereof projecting above said mount, a pressing plate of

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
US00400119A 1973-05-23 1973-09-24 Switch-incorporating plug socket Expired - Lifetime US3843854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48056706A JPS5250718B2 (ja) 1973-05-23 1973-05-23

Publications (1)

Publication Number Publication Date
US3843854A true US3843854A (en) 1974-10-22

Family

ID=13034906

Family Applications (1)

Application Number Title Priority Date Filing Date
US00400119A Expired - Lifetime US3843854A (en) 1973-05-23 1973-09-24 Switch-incorporating plug socket

Country Status (2)

Country Link
US (1) US3843854A (ja)
JP (1) JPS5250718B2 (ja)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944316A (en) * 1974-08-26 1976-03-16 Newman Albert P Electrical connectors with keying means
US4034172A (en) * 1976-03-19 1977-07-05 Amp Incorporated High voltage connector with crow bar
US4179175A (en) * 1978-10-02 1979-12-18 Farnworth Ivan A Safety socket
EP0079016A1 (de) * 1981-11-10 1983-05-18 HARTING ELEKTRONIK GmbH Steckverbindung mit schaltbarer Kontaktbrücke
DE3412346A1 (de) * 1984-04-03 1985-10-10 Brown, Boveri & Cie Ag, 6800 Mannheim Zweipolige schutzkontaktsteckdose zum potentialfreien schliessen und oeffnen der steckverbindung
EP0172281A1 (en) * 1982-09-21 1986-02-26 W.F. Jou Electric safety socket and fuse replacement device
US4596908A (en) * 1985-03-05 1986-06-24 Mott John S Safety cover for an electrical outlet
GB2169459A (en) * 1984-12-18 1986-07-09 Colin Terence Willis Switched lamp socket
EP0495149A1 (de) * 1990-12-26 1992-07-22 Alexander Dr. Schluttig Sicherheitssteckdose mit selbstabschaltender Stromzufuhr zu den Steckdosenkontakten
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
US5562467A (en) * 1993-11-26 1996-10-08 Motorola, Inc. Electrical interface seal
WO1999016154A1 (en) * 1997-09-25 1999-04-01 Tru-Connector Corporation Connector with integral switch actuating cam
US20070167050A1 (en) * 2006-01-18 2007-07-19 Mass Technology (H.K.) Ltd. Safety lampholder and method for avoiding accidental electric shock caused by lampholder
EP2149941A1 (en) * 2008-07-30 2010-02-03 Fujitsu Component Limited Connector
CN101783522A (zh) * 2010-03-10 2010-07-21 杭州市电力局 一种智能型充电连接器
US20140094046A1 (en) * 2012-09-28 2014-04-03 Atlantic Great Dane, Inc. Power supply system including panel with safety release
US20140199863A1 (en) * 2011-12-24 2014-07-17 Shifeng Lin Power Supply Connection Structure Device
US9093788B2 (en) 2012-09-28 2015-07-28 Atlantic Great Dane, Inc. Power supply system including panel with safety release
US20150236455A1 (en) * 2014-02-16 2015-08-20 Shenzhen Zhongke Electrical Technology Co., Ltd Power Supply Connection Structure Device
US20170340190A1 (en) * 2015-06-15 2017-11-30 Olympus Corporation Receptacle connector
US10446990B2 (en) 2016-10-14 2019-10-15 Power Products, Llc Cord disconnect apparatus and methods
USD924154S1 (en) 2017-10-16 2021-07-06 Power Products, Llc Plug
US20230133835A1 (en) * 2021-10-29 2023-05-04 Lunar Energy, Inc. Low-profile smart outlet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321392U (ja) * 1976-08-03 1978-02-23
JPS58217318A (ja) * 1982-06-11 1983-12-17 Matsushita Refrig Co 合成樹脂品の裁断面バリ処理方法

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944316A (en) * 1974-08-26 1976-03-16 Newman Albert P Electrical connectors with keying means
US4034172A (en) * 1976-03-19 1977-07-05 Amp Incorporated High voltage connector with crow bar
US4179175A (en) * 1978-10-02 1979-12-18 Farnworth Ivan A Safety socket
EP0079016A1 (de) * 1981-11-10 1983-05-18 HARTING ELEKTRONIK GmbH Steckverbindung mit schaltbarer Kontaktbrücke
EP0172281A1 (en) * 1982-09-21 1986-02-26 W.F. Jou Electric safety socket and fuse replacement device
DE3412346A1 (de) * 1984-04-03 1985-10-10 Brown, Boveri & Cie Ag, 6800 Mannheim Zweipolige schutzkontaktsteckdose zum potentialfreien schliessen und oeffnen der steckverbindung
GB2169459A (en) * 1984-12-18 1986-07-09 Colin Terence Willis Switched lamp socket
US4596908A (en) * 1985-03-05 1986-06-24 Mott John S Safety cover for an electrical outlet
EP0495149A1 (de) * 1990-12-26 1992-07-22 Alexander Dr. Schluttig Sicherheitssteckdose mit selbstabschaltender Stromzufuhr zu den Steckdosenkontakten
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
US5562467A (en) * 1993-11-26 1996-10-08 Motorola, Inc. Electrical interface seal
WO1999016154A1 (en) * 1997-09-25 1999-04-01 Tru-Connector Corporation Connector with integral switch actuating cam
US5921794A (en) * 1997-09-25 1999-07-13 Tru-Connector Corporation Connector with integral switch actuating cam
US7381070B2 (en) * 2006-01-18 2008-06-03 Mass Technology (H.K.) Ltd. Safety lampholder and method for avoiding accidental electric shock caused by lampholder
US20070167050A1 (en) * 2006-01-18 2007-07-19 Mass Technology (H.K.) Ltd. Safety lampholder and method for avoiding accidental electric shock caused by lampholder
EP2149941A1 (en) * 2008-07-30 2010-02-03 Fujitsu Component Limited Connector
US20100029141A1 (en) * 2008-07-30 2010-02-04 Fujitsu Component Limited Connector
US8123539B2 (en) * 2008-07-30 2012-02-28 Fujitsu Component Limited Connector
CN101783522A (zh) * 2010-03-10 2010-07-21 杭州市电力局 一种智能型充电连接器
CN101783522B (zh) * 2010-03-10 2012-08-22 杭州市电力局 一种智能型充电连接器
US20140199863A1 (en) * 2011-12-24 2014-07-17 Shifeng Lin Power Supply Connection Structure Device
US9413113B2 (en) * 2011-12-24 2016-08-09 Shenzhen Zhongke Electrical Technology Co., Ltd. Power supply connection structure device
US8764469B2 (en) * 2012-09-28 2014-07-01 Atlantic Great Dane, Inc. Power supply system including panel with safety release
US20140094046A1 (en) * 2012-09-28 2014-04-03 Atlantic Great Dane, Inc. Power supply system including panel with safety release
US9093788B2 (en) 2012-09-28 2015-07-28 Atlantic Great Dane, Inc. Power supply system including panel with safety release
US20150236455A1 (en) * 2014-02-16 2015-08-20 Shenzhen Zhongke Electrical Technology Co., Ltd Power Supply Connection Structure Device
US20170340190A1 (en) * 2015-06-15 2017-11-30 Olympus Corporation Receptacle connector
US10069250B2 (en) * 2015-06-15 2018-09-04 Olympus Corporation Receptacle connector
US10446990B2 (en) 2016-10-14 2019-10-15 Power Products, Llc Cord disconnect apparatus and methods
US10811827B1 (en) 2016-10-14 2020-10-20 Power Products, Llc Cord disconnect apparatus and methods
USD924154S1 (en) 2017-10-16 2021-07-06 Power Products, Llc Plug
US20230133835A1 (en) * 2021-10-29 2023-05-04 Lunar Energy, Inc. Low-profile smart outlet
US11837823B2 (en) * 2021-10-29 2023-12-05 Lunar Energy, Inc. Low-profile smart outlet

Also Published As

Publication number Publication date
JPS5250718B2 (ja) 1977-12-27
JPS507089A (ja) 1975-01-24

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