WO1993005548A1 - Prise de courant a fiche pour appareil electrique - Google Patents

Prise de courant a fiche pour appareil electrique Download PDF

Info

Publication number
WO1993005548A1
WO1993005548A1 PCT/JP1992/001144 JP9201144W WO9305548A1 WO 1993005548 A1 WO1993005548 A1 WO 1993005548A1 JP 9201144 W JP9201144 W JP 9201144W WO 9305548 A1 WO9305548 A1 WO 9305548A1
Authority
WO
WIPO (PCT)
Prior art keywords
socket
plug
terminal
barrier
intrinsically safe
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.)
Ceased
Application number
PCT/JP1992/001144
Other languages
English (en)
Japanese (ja)
Inventor
Naoki Kusaka
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.)
M??system Co Ltd
M System Co Ltd
Original Assignee
M??system Co Ltd
M System 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 M??system Co Ltd, M System Co Ltd filed Critical M??system Co Ltd
Publication of WO1993005548A1 publication Critical patent/WO1993005548A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6658—Structural association with built-in electrical component with built-in electronic circuit on printed circuit board
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure

Definitions

  • the present invention relates to a plug-in type electric device socket used in an intrinsically safe explosion-proof system.
  • FIG. 1 is a side view for explaining the plug-in type electric device 10 and its socket 20.
  • the plug-in type electric device 10 has one end. It has a plug 13 and can be attached to and removed from socket 20.
  • An electrical device having a structure in which the plug 13 of the electrical device 10 is inserted into the socket 20 when used in this manner is called a plug-in type electrical device.
  • Conventional plug-in type electrical equipment 10 that is certified for use in intrinsically safe explosion-proof systems is composed of a main circuit section 11 that has the traditional function of electrical equipment and an intrinsically safe barrier (safety protection). 1) and 2).
  • the intrinsically safe barrier 12 is a non-hazardous location like the intrinsically safe explosion-proof system shown in Fig. 2, and the main circuit section 11 of the electrical equipment 10 in the NH and the danger location H where there is a danger of explosion Non-hazardous area interposed between the electric circuit and the electric circuit in the explosive hazardous area H
  • An intrinsically safe circuit is one that does not cause ignition to a specified explosive atmosphere due to the effects of electrical sparks or heat generated under normal operating conditions of the electrical equipment 10 and under specified fault conditions.
  • a circuit Such intrinsically safe systems are used, for example, in oil, gas and chemical plants.
  • the intrinsic safety barrier 1 and 2 are connected to the electrical circuit 30 in the hazardous area and the electrical circuit in the non-hazardous area.
  • the electric circuit 30 in the hazardous area H may be, for example, an electric circuit including various sensors such as a temperature detection element, a pressure detection element, a gas detection element, an imaging element, or a driving device such as a motor.
  • An electric circuit to drive the other is possible.
  • the plug-in type electric device 10 various converters for converting the signal i from the electric circuit 30 into a signal suitable for measurement or a motor drive control circuit are possible.
  • the external electric device 40 may be, for example, a power supply device that simply supplies power to the electric device 10, or a system control that controls a system (not shown) based on the signal i from the electric device 10.
  • a device or a signal generating device that supplies a control signal to the electric device 10 can be used.
  • the electric circuit 30, the electric device 10, and the external electric device 40 are a sensor circuit, a converter, and a system controller, respectively.
  • the electrical connection between the converter 10 and the sensor circuit 30 in the hazardous area H can be made by simply supplying an electric signal from the sensor circuit 30 to the converter 10 or by converting the sensor circuit 30 into a converter.
  • Fig. 2 shows a functional block diagram of a conventional intrinsically safe explosion-proof system using an intrinsically safe barrier 12 and a single plug-in electrical device (converter).
  • the main circuit section 11 of the plug-in type converter 10 is located in the hazardous area NH.
  • the socket 20 is connected to the socket / plug connection 21 of the socket 20 via the quality safety barrier 12 and a predetermined contact of the connection 21 is connected to the hazardous area terminal 22.
  • the other contact of the connecting portion 21 is connected to the non-hazardous area side terminal portion 23, and the terminal portion 23 is connected to, for example, the system controller 40 via the wiring L2.
  • the intrinsically safe barrier 12 can be placed in a non-hazardous area. It is interposed between the existing main circuit section 11 and the sensor circuit 30 existing in the hazardous area H.
  • the plug-in converter 10 incorporating the intrinsically safe barrier 12 as described above is connected to the sensor circuit 30 in the explosive hazardous area H, the intrinsic Whether the safety barrier 12, the plug-in type converter 10, and the socket 20 combine to provide intrinsically safe explosion-proof performance as an integrated electrical device. It goes without saying that it is subject to the test. Since the intrinsically safe barrier 12 is integrated into the converter 10, it is a complete community with the main circuit section 11, and the barrier 12 itself has independence and versatility. Not at all. That is, an intrinsically safe barrier 12 has been incorporated. All converters 10 need to be tested for the required intrinsically safe explosion protection.
  • An object of the present invention is to provide a socket for a plug-in type electric device which can connect various plug-in type electric devices and can meet the intrinsically safe explosion-proof standard. It is.
  • a socket for a plug-in type electric device is a plug to be inserted.
  • a socket having a plurality of contacts electrically connected to the plug of the plug-in type electric device.
  • Non-hazardous area end connected to the plug connection and the corresponding contact of the above-mentioned soft 'flag' connection
  • at least one hazardous location terminal to be connected to the hazardous area electrical circuit and at least one other of the above contacts, and the hazardous location terminal
  • an intrinsically safe barrier that prevents excessive energy from being supplied to the terminals.
  • FIG. 1 is a diagram for explaining a conventional plug-in type electric device.
  • Fig. 2 is a block diagram of an intrinsically safe explosion-proof system using a conventional plug-in type electric device with a built-in intrinsically safe barrier.
  • FIG. 3 is a block diagram of an intrinsically safe explosion-proof system using the socket for electrical equipment of the plug-in type according to the present invention.
  • FIG. 4 is a plan view showing an embodiment of the socket of FIG.
  • FIG. 5 is a sectional view taken along line 5-5 of the embodiment in FIG.
  • FIG. 6 is a circuit diagram showing a specific configuration example of the intrinsically safe barrier.
  • FIG. 7 is a sectional view showing another embodiment of the socket of FIG.
  • Fig. 8 shows the block connection of the intrinsically safe system that provides the socket on page 7.
  • FIG. 9 is a perspective view of the short plug.
  • the socket 20 of the present invention includes a socket / plug surrounding portion 21, a hazardous area side terminal 22, and a non-hazardous area side terminal 23, and furthermore, the intrinsically safe barrier 12 is connected to the connecting section 21. Inserted between the hazardous area side terminal 2 2.
  • the plug-in type electric device (converter) 10 is connected to the socket's plug surrounding portion 21 via the plug.
  • the socket 21 is connected to the hazardous area side terminal 22 via the intrinsically safe barrier 12, and the electric circuit in the hazardous area H is connected to the terminal 22 by wiring L 1 from the terminal 22. Road) It is surrounded by three lines.
  • socket ' 1 is connected to an external electrical device (system controller) 40 via a non-hazardous area terminal 23 and wiring L 2.
  • the plug-in type electric device 10 is, for example, a signal converter
  • the hazardous area electric circuit 30 is, for example, a sensor circuit at the detection end for measurement.
  • the voltage signal obtained by the sensor circuit 30 is sent to the converter 10 via the hazardous area terminal 22, the intrinsically safe barrier 12, and the socket / plug connection 21, where the signal is output. It is converted into a signal in a form suitable for processing.
  • the converted signal is supplied to an external system controller 40 via a socket / plug connection section 21 and a non-hazardous area side terminal 23, and based on the signal, for example, a system (not shown) Control.
  • Each block is shown to be connected by two wires, but the number of connection lines is two by the converter 10 and the sensor circuit 30 in the hazardous area. In some cases, this is the case.
  • FIG. 4 and 5 are a plan view showing a specific embodiment of the socket 20 of the present invention in FIG. 3 and a sectional view taken along line 5-5 thereof.
  • Two rectangular printed circuit boards 2A and 2B provided vertically above and below each other in the absolute rectangular case 20H constituting the outer wall of the socket 20, and these printed circuit boards
  • Two connectors 2 CA and 2 CB for connecting wiring between them, and an intrinsically safe barrier 12 provided on the printed wiring board 2 B are provided.
  • a plurality of hazardous area side terminal screws 22 and a plurality of non-hazardous area side terminal screws 23 are provided on opposite sides of the upper surface of the case 20H, respectively. It is connected to the printed wiring (not shown) formed on the printed wiring board 2A.
  • a socket 'plug connection portion 21 protruding above the disk is provided, and a guide hole 21G for guiding the plug is formed at the center thereof.
  • a plurality of contact receiving holes 21 h are formed around the guide hole 21 G.
  • Each contact accommodating hole 21 h receives a pin of the plug-in type converter 10 or accommodates a septum contactor 21 R.
  • the 21 R terminal extends into the case 20 H and is connected to the corresponding printed wiring on the printed wiring board 2 A.
  • the bottom surface of the case 20H is cut in the width direction to form a recess 20R, and a ground plate 2T is provided in contact with the bottom surface of the recess 20R. It enters and is connected to the ground wire on the printed wiring board 2B.
  • a socket 20 is fixed to a ground bus bar 2 G extending so as to pass through the concave portion 20 R 1 ⁇ of the case 20 H with a screw 2 S, and the two ground plates and the ground pass bar 2 G are connected to each other. Is done.
  • This structure is convenient when a plurality of sockets 20 are attached to a common ground bus bar 2G.
  • the intrinsically safe barrier 12 is formed in principle as shown in Fig. 6, for example.
  • Terminals TB 1 and TB 2 are connected to the hazardous area side terminal 2 through the printed wiring and connector 2 CA.
  • Terminals TA 1 and TA 2 are connected through a printed wiring and connector 2 CR to the socket * Bragg connection.
  • a fuse F1 and a current limiting resistor R1 are inserted in series between the terminals TA1 and TB1.
  • a voltage limiting diode D1 is inserted between the connection point between the resistor R1 and the fuse F1 and the ground E.
  • the ground E is connected to the ground bus bar 2G through the ground plate 2T in FIG.
  • a fuse F 2 and a resistor R 2 are inserted in series between the terminals T A 2 and T B 2
  • a zener diode D 2 is inserted between the contact points thereof and the ground E.
  • the Zener diodes D 1 and D 2 limit the voltage supplied from the safety terminals T A 1 and T A 2 so that they do not exceed a predetermined value.
  • the sensor circuit 30 in the hazardous area H is a sensor that generates a DC voltage detection signal
  • the sensor HI path 30 Signal is given to the hazardous area side terminal 22 of the socket 20 installed in the non-hazardous area NH, and from the terminal 22 the wiring on the printed wiring board 2A, the connector 2CA, It is applied to the input terminal TB 1> TB 2 of the intrinsically safe barrier 12 through the wiring on the printed wiring board 2 B sequentially.
  • the detection signal that has passed through the intrinsic safety barrier 1 and 2 is sent from the terminals TA 1 and TA 2 to the wiring on the wiring board 2 B, the connector 2 CB, the wiring on the printed wiring board 2 A, and the socket 'plug connection.
  • the signal is supplied to the plug-in type converter 10 through the two receptacle contacts 21 R of 21 and is converted into a signal in a form suitable for processing.
  • This conversion may be performed in various cases, for example, from a voltage signal to a current signal, a level conversion, a conversion from a DC signal to an AC signal, and a conversion from an analog signal to a digital signal.
  • the converted signal from the converter 10 is connected to a socket. 2 3, from which a conversion signal is supplied to the system controller 40. Also, the system controller 40 supplies power for the computer 10 to the terminal 23, and the socket is connected from the terminal 23. Power is supplied to the converter 10 through the contact 21 R of the lug connection 21.
  • the intrinsic safety barrier 12 is provided in the case 20 of the socket 20.
  • the socket portion 20S and the barrier portion 20 # may be separately assembled, and may be integrally fixed to each other with screws 20F.
  • the socket portion of a substantially rectangular parallelepiped 20 S The case 20SH has a base 20D, on the upper surface of which extends downward from the receptacle connector 21R of the connection portion 21, the external connection terminals 22, 23, and the barrier. Gun contact wiring for section 20B is used.
  • the barrier section 20 ⁇ ⁇ ⁇ ⁇ attached to the lower side of the socket section 20 S with screws 20 F is a rectangular parallelepiped insulating case 20 ⁇ ⁇ and the printed wiring boards 2,, 2 ⁇ And an intrinsically safe barrier 12 similar to that shown in FIG. 6 provided on the printed wiring board 2.
  • Pin connectors 20 CA and 20 CB for connecting the wiring on the base 20 D of the socket section 20 S and the printed wiring boards 2 A and 2 B of the barrier section 20 ⁇ ⁇ are provided.
  • the printed wiring boards 2A and 2B are connected by a connector 2CC.
  • FIG. 8 shows an internal block connection and a block connection of the embodiment of FIG.
  • the hazardous area side terminal 22 is connected to one terminal TB 1, TB 2 (see FIG. 6) of the intrinsically safe barrier 12 on the printed wiring board 2 B via the connector 20 CB, and is connected to the other terminal.
  • Terminals TA 1 and TA 2 are connected to corresponding contacts 2 i R of socket 'plug connection 21 via connectors 2 CC and 20 CA.
  • the non-hazardous area terminal 23 is connected to the corresponding contact 21 R on the base 20 D. Therefore, the internal connection of the socket 20 in this embodiment is basically the same as the connection shown in FIG.
  • the intrinsically safe barrier 12 itself in each of the above-mentioned embodiments is itself subject to the intrinsically safe explosion-proof performance test. It can be a target of commercial transactions. Accordingly, in the socket 20 shown in FIG. 3, the plug-in type converter 10 is not used, and the socket-plug connection portion 21 is connected to the socket-plug converter 21 as shown in FIG. 9, for example. Short plug 50 with short-circuit pin 52 implanted on insulation disk 51 Other sockets Plug connection Short-circuit member is attached to connection 21 and connected.
  • the socket 20 of the present invention is a socket for a plug-in type electric device when the short plug 50 is not attached to the socket 'plug connecting portion 21. Integral with the plug-in type converter 10, it constitutes an intrinsically safe explosion-proof system that covers the electrical circuit 30 in the hazardous area H. With the Short's Brag 50 installed on it, it is no longer a socket, but simply used as an intrinsically safe barrier.
  • Plug * In-type electrical equipment (converter) 10 has an intrinsically safe barrier 12 in it, and the combination of this and a specified socket is essentially an integral electrical equipment. As described above, it is subject to verification as to whether or not it exhibits safe explosion-proof performance. On the other hand, as described above, the intrinsically safe barrier 12 itself can be a target of the intrinsically safe explosion-proof performance test, as described above. Intrinsically safe barrier 12 can be used for any type of electrical equipment 10 that is within certain permitted ratings. In other words, if the socket for the plug-in type electric device incorporating the intrinsically safe barrier as in the present invention has passed the certification alone, the electric device connected to this socket can be used. Does not need to be tested.
  • connection 21 is connected to the intrinsically safe barrier 12 and the non-hazardous area terminal 2 3 ”
  • the intrinsically safe barrier 12 in the socket 20 has the non-hazardous area side terminal 23 as one terminal and the dangerous area side terminal 22 as the other terminal. It can be used as an intrinsically safe barrier that can be used as a socket. It is convenient to be able to construct

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

Dans la présente invention, une pièce de connexion (21) entre la prise mâle et la fiche femelle, des bornes (22) du côté dangereux et des bornes (23) du côté non dangereux sont montées sur un boîtier en plastique isolant (20H), et une barrière de sûreté (12) est prévue dans le boîtier (20H). Les bornes (22) sont connectées à des contacts (21R) de la pièce de connexion (21) entre la prise mâle et la fiche femelle, par l'intermédaire de la barrière de sûreté (12).
PCT/JP1992/001144 1991-09-11 1992-09-09 Prise de courant a fiche pour appareil electrique Ceased WO1993005548A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP23136591A JPH0574515A (ja) 1991-09-11 1991-09-11 プラグ・イン型電気機器用ソケツト
JP3/231365 1991-09-11

Publications (1)

Publication Number Publication Date
WO1993005548A1 true WO1993005548A1 (fr) 1993-03-18

Family

ID=16922481

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1992/001144 Ceased WO1993005548A1 (fr) 1991-09-11 1992-09-09 Prise de courant a fiche pour appareil electrique

Country Status (2)

Country Link
JP (1) JPH0574515A (fr)
WO (1) WO1993005548A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588395A3 (en) * 1992-09-14 1996-01-17 Gen Motors Corp Electrical assembly and connector therefor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4026686Y1 (fr) * 1964-07-18 1965-09-10
JPS61107171U (fr) * 1984-12-20 1986-07-07
JPS627183U (fr) * 1985-06-28 1987-01-16
JPH0415181U (fr) * 1990-05-30 1992-02-06

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5438308A (en) * 1977-08-31 1979-03-22 Tokyo Shibaura Electric Co Method of making ceramic sintered body
JPS57201920A (en) * 1981-06-04 1982-12-10 Matsushita Electric Ind Co Ltd Switching electric power source circuit
JPS5836374A (ja) * 1981-08-28 1983-03-03 Hitachi Ltd 海苔調合装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4026686Y1 (fr) * 1964-07-18 1965-09-10
JPS61107171U (fr) * 1984-12-20 1986-07-07
JPS627183U (fr) * 1985-06-28 1987-01-16
JPH0415181U (fr) * 1990-05-30 1992-02-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588395A3 (en) * 1992-09-14 1996-01-17 Gen Motors Corp Electrical assembly and connector therefor

Also Published As

Publication number Publication date
JPH0574515A (ja) 1993-03-26

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