JP2010055896A - Receptacle, plug, and wiring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a receptacle, a plug, and a wiring device which are in conformity with the IEC standard, and in which signal transmission wiring is facilitated. <P>SOLUTION: The plug 1A is equipped with a fitting part 12 in which a round hole-shaped fitting hole 13 is opened, pin terminals 15a, 15b for a voltage electrode arranged and installed inside the fitting hole 13 along the plug insertion/extraction direction, and pin terminals 16a, 16b for signal transmission arranged and installed at the outside site of the fitting hole 13 along the plug insertion/extraction direction. The receptacle 2A is equipped with a power supply terminal connecting part 3Ab in conformity with the IEC standard to which the pin terminals 15a, 15b for the voltage electrode attached to the plug 1A are insertably and extractably connected, and a signal terminal connecting part 3B which is installed at the site different from that at the power supply terminal connecting part 3A, and to which the pin terminals 16a, 16b for the signal transmission attached to the plug 1A are insertably and extractably connected. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wiring device used for connecting a low-voltage electric circuit.

Conventionally, devices such as radios and telephones use a DC power source as a driving power source, and a DC outlet for supplying DC power to such a DC device has been known (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 7-15835 (paragraphs [0021]-[0023] and FIG. 1)

  In the DC outlet disclosed in Patent Document 1, the outlet of the DC power supply is an outlet corresponding to the pin type plug provided in the AC adapter, and the shape of the plug differs depending on the manufacturer or country. It was scarce.

  On the other hand, in the IEC standard (CEI / IEC 906-3), plugs and sockets used in SELV (Safty Extra Low Voltage) circuits have been standardized, and plugs conforming to this standard are detachable. The applicant of the present application has proposed an outlet connected to.

  However, since the DC outlet disclosed in the above-mentioned Patent Document 1 and the outlet conforming to the IEC standard do not include a signal receiving blade receiving member, when connecting a signal transmission wiring to a load device, In addition to connecting the plug on the power line from the equipment to the outlet, it is necessary to connect the signal transmission terminal of the load equipment separately to the wiring equipment for signal transmission, which takes time and labor. It was.

  The present invention has been made in view of the above problems, and an object of the present invention is an outlet, a plug and a wiring device compliant with the IEC standard, and an outlet and a plug that can easily perform wiring for signal transmission. And providing a wiring device.

  In order to achieve the above object, the invention of claim 1 includes a fitting portion having a round hole-like fitting hole opened on the front surface, and a plurality of voltages arranged along the plug insertion / removal direction inside the fitting hole. A plug provided with an electrode pin terminal is detachably connected, and is an outlet for supplying power to the load side through the plug, and the inner peripheral surface of the plug insertion hole into which the plug fitting portion is inserted With a gap in between, and protruding from the bottom of the plug insertion hole toward the front, a cylindrical protrusion inserted into the fitting hole, and opened to the front of the protrusion for the voltage electrode A voltage electrode provided in the plug, comprising a terminal insertion hole into which the pin terminal is inserted and connected, a blade receiving member electrically connected to the pin terminal for the voltage electrode inserted into the protruding portion through the terminal insertion hole. Power terminal connection conforming to the IEC standard, where the pin terminal for the cable can be inserted and removed freely When provided at different sites of the supply terminal connection portion, a pin terminal for signal transmission provided in the plug is characterized in that a signal terminal connection coupled to removably inserted.

  According to a second aspect of the present invention, in the first aspect of the invention, the ground terminal connecting portion to which the pin terminal for the ground electrode provided in the plug is detachably connected is located at a position different from the power terminal connecting portion and the signal terminal connecting portion. It is provided.

  The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the power supply terminal connecting portion is provided with erroneous connection preventing means for preventing plugs having different power supply voltages from being connected.

  According to a fourth aspect of the present invention, in any of the first to third aspects of the present invention, there is provided a retaining means for retaining the plug connected to the power terminal connecting portion.

  The invention according to claim 5 is a circle projecting forward from the bottom surface of the plug insertion hole in a state where a gap is provided between the plug insertion hole opening in a round hole shape and the inner peripheral surface of the plug insertion hole. Column-shaped protrusions, a plurality of power terminal insertion holes for voltage electrodes opened in front of the protrusions, and a plurality of blade receiving members for voltage electrodes arranged facing the power terminal insertion holes inside the protrusions A plug that is detachably connected to an outlet including a fitting portion that is removably inserted into a plug insertion hole, and has a round hole shape that is open on the surface of the fitting portion and into which a protruding portion is inserted. For the voltage electrode that is arranged along the plug insertion / removal direction inside the fitting hole and the fitting hole, and is inserted into the protruding portion from each terminal insertion hole and electrically connected to the blade receiving member for the voltage electrode The power supply terminal unit conforming to the IEC standard having a plurality of pin terminals is different from the power supply connection unit. A signal terminal provided with a pin terminal for signal transmission, which is provided at the site and is inserted into a signal terminal insertion hole provided in the outlet and electrically connected to a signal transmission blade receiving member disposed inside the outlet And a section.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the grounding provided in a portion different from the power terminal portion and the signal terminal portion, inserted into a grounding terminal insertion hole provided in the outlet, and disposed inside the outlet. A pin terminal for a ground electrode that is electrically connected to a blade receiving member for a pole is provided.

  The invention of claim 7 is characterized in that in the invention of claim 5 or 6, there is provided an erroneous connection preventing means for preventing connection to outlets having different feeding voltages.

  The invention of claim 8 is characterized in that in any of the inventions of claims 5 to 7, there is provided a retaining means for retaining the plug while being connected to the outlet.

  The invention of claim 9 includes a plug connected to the electric wire and an outlet provided on the construction surface, the plug being detachably connected and supplying power to the load side through the plug, the plug being round A fitting portion where a hole-like fitting hole opens, a plurality of pin terminals for voltage electrodes arranged along the plug insertion / removal direction inside the fitting hole, and a plug insertion / removal direction on the outer part of the fitting hole in the plug insertion / removal direction And a plug terminal for inserting a plug in a state where a gap is provided between an inner peripheral surface of a plug insertion hole into which a fitting portion of the plug is inserted. A cylindrical protrusion that protrudes forward from the bottom of the hole and is inserted into the fitting hole, and a plurality of terminal insertions that are opened in front of the protrusion and a plurality of pin terminals for voltage electrodes are plugged in For voltage poles inserted into the projecting part through the hole for each terminal and each terminal insertion hole A power terminal connection portion compliant with the IEC standard in which a plurality of blade receiving members that are electrically connected to each of the lead terminals are connected, and a pin terminal for a voltage electrode included in the plug is detachably connected, and a power terminal connection And a signal terminal connecting portion provided in a portion different from the portion, to which a signal transmission pin terminal included in the plug is detachably connected.

  According to a tenth aspect of the present invention, in the ninth aspect of the invention, the plug includes a ground electrode pin terminal, and the outlet has a ground electrode pin terminal at a location different from the power terminal connection portion and the signal terminal connection portion. It is characterized by comprising a ground terminal connection portion to which is inserted and removed.

  The invention of claim 11 is characterized in that, in the invention of claim 9 or 10, the power supply terminal connecting portion is provided with erroneous connection preventing means for preventing plugs having different power supply voltages from being connected.

  According to a twelfth aspect of the present invention, in any of the ninth to eleventh aspects of the present invention, there is provided a retaining means for retaining the plug connected to the outlet.

  According to the first aspect of the present invention, the outlet includes both the power terminal connecting portion and the signal terminal connecting portion. When a plug having a pin terminal for signal transmission is connected to the outlet, the outlet for the voltage electrode of the plug is used. In addition to connecting the pin terminal of the load device to the power supply terminal connection part and the pin terminal for signal transmission to the signal terminal connection part, simply connecting the plug from the load device to the outlet makes it possible to Transmission can be performed, and wiring labor can be simplified. In addition, the power terminal connection part of the outlet conforms to the IEC standard and can be connected if it is a plug compliant with the IEC standard, and the signal terminal connection part is provided outside the power terminal connection part. Any plug that does not have a pin terminal for signal transmission can be connected as long as the plug conforms to the IEC standard.

  According to the invention of claim 2, since the outlet includes the ground terminal connecting portion in addition to the power terminal connecting portion and the signal terminal connecting portion, the load device is grounded simply by connecting the plug from the load device to the outlet. Wiring work can be simplified.

  According to the third aspect of the present invention, it is possible to prevent plugs having different power supply voltages from being connected to the outlet, and it is possible to supply an appropriate power supply voltage to the load device connected to the outlet.

  According to the invention of claim 4, the plug can be prevented from being inadvertently pulled out from the outlet by the retaining means.

  According to the invention of claim 5, the plug includes both the voltage electrode pin terminal and the signal transmission pin terminal. When the plug is connected to the corresponding outlet, the voltage electrode pin terminal is It is connected to the power terminal connection part of the outlet, and the pin terminal for signal transmission is connected to the signal terminal connection part of the outlet, so only connecting the plug from the load equipment to the outlet makes a signal to and from the load equipment. Transmission can be performed, and wiring labor can be simplified. Further, since the plug conforms to the IEC standard and can be connected to any outlet conforming to the IEC standard, there is an advantage that versatility is improved.

  According to the invention of claim 6, since the plug includes the pin terminal for the ground electrode in addition to the pin terminal for the voltage electrode and the pin terminal for signal transmission, the plug from the load device is connected to the outlet. The load device can be grounded only by this, and the wiring work can be simplified.

  According to the seventh aspect of the present invention, it is possible to prevent plugs having different power supply voltages from being connected to the outlet and to supply an appropriate power supply voltage to the load device connected to the outlet.

  According to the eighth aspect of the present invention, the plug can be prevented from being inadvertently pulled out from the outlet by the retaining means.

  According to the invention of claim 9, the outlet includes both the power terminal connection and the signal terminal connection, and the plug includes both the voltage electrode pin terminal and the signal transmission pin terminal. When the plug is connected to the outlet, the pin terminal for the voltage electrode is connected to the power terminal connection part, and the pin terminal for signal transmission is connected to the signal terminal connection part, so the plug from the load device is connected to the outlet By simply doing this, signal transmission can be performed with the load device, and wiring work can be simplified. Also, since the power terminal connection part of the outlet conforms to the IEC standard, it can be connected if it is a plug compliant with the IEC standard, and the signal terminal connection part is provided outside the power terminal connection part. Any plug that does not have a pin terminal for signal transmission can be connected as long as the plug conforms to the IEC standard.

  According to the invention of claim 10, since the outlet includes the ground terminal connecting portion in addition to the power terminal connecting portion and the signal terminal connecting portion, the load device is grounded simply by connecting the plug from the load device to the outlet. Wiring work can be simplified.

  According to the eleventh aspect of the present invention, it is possible to prevent plugs having different feeding voltages from being connected to the outlet, and to supply an appropriate feeding voltage to the load device connected to the outlet.

  According to the twelfth aspect of the present invention, the plug can be prevented from being inadvertently pulled out from the outlet by the retaining means.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
A wiring device according to a first embodiment of the present invention will be described with reference to FIGS. 1A and 1B show a wiring device for a DC power supply, which has a plug 1A connected to an electric wire 61 from a load device 60 and a socket portion 3 to which the plug 1A is detachably connected. It is comprised with the outlet 2A arrange | positioned at a construction surface. In the socket unit 3, an AC power source AC (for example, AC 100V) is stepped down by a transformer 70, and then converted into a voltage value (for example, DC 6V, 12V, 24V, 48V) suitable for the load device 60 by an AC / DC converter 71. DC power is supplied, and DC power is supplied to the load device 60 in which the plug 1A is connected to the outlet 2A.

  2 (a) and 2 (b) show a wiring device for an AC power supply. In the socket portion 3, a voltage value (for example, AC6V, 12V, AC power converted to 24V, 48V) is supplied, and AC power is supplied to the load device 60 in which the plug 1A is connected to the outlet 2A.

  As shown in FIGS. 6 and 7, the plug 1A is connected to the end portion of the electric wire 61 from the load device 60, and has a substantially rectangular parallelepiped shape, with one surface (upper surface in FIG. 6A) having a semicircular cross section. It has a curved gripping portion 11, and a fitting portion 12 that is narrower than the rear side portion is integrally provided on the front side portion of the gripping portion 11. On the front surface of the fitting portion 12, a fitting hole 13 recessed in a round hole shape is opened on the upper side in FIG. 6A, and a fitting hole 14 recessed in a square hole shape is opened on the lower side in FIG. A predetermined distance is provided between the fitting hole 13 and the fitting hole 14.

  Inside the round hole-shaped fitting hole 13, two pin terminals 15 a and 15 b for voltage electrodes, each formed in a round bar shape from a conductive material, are arranged. In addition, in the rectangular hole-shaped fitting hole 14, two pin terminals 16a and 16b for signal transmission formed in a rectangular plate shape by a conductive material are arranged vertically on the right side in FIG. A grounding pin terminal 15c formed in a round bar shape with a conductive material is disposed on the left side in FIG. That is, the signal transmission pin terminals 16a and 16b are arranged along the plug insertion / removal direction in the outer portion (in the fitting hole 14) of the fitting hole 13 where the voltage electrode pin terminals 15a and 15b are arranged. Yes.

  On the inner peripheral surface of the fitting hole 13 in which the pin terminals 15a and 15b are arranged, a reference rib 17 indicating a reference position is provided so as to protrude along the plug insertion / removal direction (the left-right direction in FIG. 6C). Then, on the straight line passing through the center position of the fitting hole 13 and orthogonal to the line segment connecting the center position and the reference rib 17, the above-described pin terminals 15a and 15b are located symmetrically with respect to the center position. Is arranged along the plug insertion / extraction direction.

  Here, in the plug 1A for DC power supply, as shown in FIG. 8A, when the reference rib 17 is viewed upward, the pin terminal 15a located on the right side is on the positive electrode side, and the pin terminal 15b located on the left side is on the negative electrode side. It is a pin terminal. In addition, on the inner peripheral surface of the fitting hole 13, an identification rib 18 for preventing misconnection that extends along the plug insertion / extraction direction protrudes at a position corresponding to the type of power source (direct current or alternating current and rated voltage). Has been. FIG. 8A shows the position of the identification rib 18 provided on the plug 1A for DC power supply. When the power supply voltage is DC6V, 12V, 24V, 48V, the position of the reference rib 17 is the reference (0 °). The identification ribs 18 are formed one by one at positions of 120 °, 150 °, 210 °, and 240 ° counterclockwise. 8B shows the position of the identification rib 18 provided on the AC power supply plug 1A. When the power supply voltage is AC6V, 12V, 24V, and 48V, the counterclockwise direction is based on the position of the reference rib 17, respectively. In addition, identification ribs 18 are formed one by one at 30 °, 60 °, 300 °, and 330 ° positions. Here, the plug shown in FIGS. 6 and 7 is for DC48V, and the identification rib 18 is formed at a position of 240 ° counterclockwise with respect to the reference rib 17. That is, the plug 1 </ b> A of the present embodiment includes the power terminal portion 5 </ b> A conforming to the IEC standard including the fitting portion 12, the fitting hole 13, and the voltage electrode pin terminals 15 a and 15 b, and in the fitting hole 14. A signal terminal portion 5B composed of the arranged signal transmission pin terminals 16a and 16b and a ground terminal portion 5C composed of the ground electrode pin terminal 15c disposed in the fitting hole 14 are provided. ˜5C are provided at different sites.

  On the other hand, the outlet 2 </ b> A includes a container body 4 having a socket portion 3 provided on the front surface as shown in FIGS. A plate frame 8 is integrally provided at the front portion of the container body 4, and is placed above and below the plate frame 8 in a state where the rear portion of the container body 4 is housed in an embedding hole (not shown) that opens to the construction surface. By inserting the box screw 6 into the provided insertion hole and screwing the box screw 6 into the screw hole of the embedding box, the container 4 is embedded in the construction surface.

  The socket portion 3 provided in the outlet 2A has a plug insertion hole in which the fitting portion 12 has the same shape and size as the front surface of the fitting portion 12 of the plug 1A shown in FIGS. 31 is open. From the bottom surface of the plug insertion hole 31, a columnar protrusion 32 inserted into the fitting hole 13 of the plug 1A and a prismatic protrusion 33 inserted into the fitting hole 14 are respectively forward. It is formed so as to protrude.

  Terminal insertion holes 34 a and 34 b into which the voltage electrode pin terminals 15 a and 15 b are inserted are opened on the front surface of the cylindrical protrusion 32, and terminal insertion holes 34 a are formed inside the protrusion 32. , 34b are housed in blade receiving members 35, 35 that are electrically connected to pin terminals 15a, 15b inserted therein. A fitting groove 37 indicating a reference position is formed on the outer peripheral surface of the protruding portion 32 along the plug insertion / extraction direction, and passes through the center position of the protruding portion 32 to connect the center position and the fitting groove 37. On the straight line orthogonal to the line segment, the terminal insertion holes 34a and 34b are opened at positions symmetrical to the center position. Here, in the socket portion 3 for the DC power source, as shown in FIG. 5A, the terminal insertion hole 34a located on the left side when the fitting groove 37 is viewed on the upper side corresponds to the pin terminal on the positive side, The terminal insertion hole 34b located on the right side corresponds to the negative-side pin terminal. Here, the pin terminals 15a and 15b for the voltage electrode included in the plug 1A are detachably connected from the plug insertion hole 31, the protrusion 32, the terminal insertion holes 34a and 34b, the blade receiving members 35 and 35, and the like. A power supply terminal connection 3A conforming to the IEC standard is configured.

  Further, on the outer peripheral surface of the protruding portion 32, a fitting groove for preventing erroneous connection, in which the identification rib 18 of the corresponding plug 1A is fitted at a position corresponding to the type of power supply (direct current or alternating current and rated voltage). 38 (misconnection prevention groove) is formed. Here, FIG. 5A shows the position of the fitting groove 38 provided in the socket portion 3 for DC power supply. When the power supply voltage is DC6V, 12V, 24V, and 48V, the position of the fitting groove 37 is shown. With reference to (0 °), fitting grooves 38 are formed at positions of 120 °, 150 °, 210 °, and 240 ° clockwise. FIG. 5B shows the position of the fitting groove 38 provided in the socket portion 3 for AC power supply. When the power supply voltage is AC6V, 12V, 24V, 48V, the position of the fitting groove 37 is shown respectively. As a reference (0 °), fitting grooves 38 are formed one by one at positions of 30 °, 60 °, 300 °, and 330 ° clockwise. 3 and 4 is for DC 48V, and a fitting groove 38 is formed at a position of 240 ° clockwise with respect to the position of the fitting groove 37. As described above, in the socket portion 3, the fitting groove 38 into which the identification rib 18 provided in the plug 1 </ b> A is engaged is formed at a position corresponding to the power supply voltage on the outer peripheral surface of the protruding portion 32. Further, depending on the position of the fitting groove 38, the plug 1A having a different supply voltage can be prevented from being plugged into the socket portion 3, and a power supply suitable for the load device 60 can be supplied. Here, the plug 1 </ b> A having a different feeding voltage is connected to the socket portion 3 from the fitting groove 38 formed on the outer peripheral surface of the protruding portion 32 and the identification rib 18 protruding from the inner peripheral surface of the fitting hole 13. Incorrect connection preventing means for preventing occurrence of the error is configured.

  On the other hand, on the front surface of the prismatic protrusion 33, a terminal insertion hole 36a into which the pin terminal 15c for the ground electrode is inserted and a square hole into which the two pin terminals 16a and 16b for signal transmission are respectively inserted. Shaped terminal insertion holes 36b and 36c are opened. A blade receiving member (not shown) having the same shape as the above-described blade receiving member 35 is accommodated in the protruding portion 33, and the pin terminal 15c inserted therein through the terminal insertion hole 36a is grounded. The pin terminals 16a and 16b inserted inside through the terminal insertion holes 36b and 36c are electrically connected to the signal receiving blade receiving member while being electrically connected to the electrode blade receiving member. It has become. Here, the protrusion 33, the terminal insertion holes 36b and 36c, and the blade receiving member electrically connected to the pin terminals 16a and 16b inserted into the protrusion 33 through the terminal insertion holes 36b and 36c, etc. A signal terminal connection portion 3B is provided which is provided in a different part from the power supply terminal connection portion 3A and is electrically connected to the signal transmission pins 16a and 16b provided in the plug 1A. Further, the grounding terminal connecting portion 3C is composed of the protruding portion 33, the terminal insertion hole 36a, and the blade receiving member electrically connected to the pin terminal 15c inserted into the protruding portion 33 through the terminal insertion hole 36a. The power terminal connecting portion 3A, the signal terminal connecting portion 3B, and the ground terminal connecting portion 3C are arranged at different locations.

  Further, as shown in FIG. 3C, a terminal block 22 for connecting a two-wire signal line 80 from the outside is provided on the lower side of the container body 4. The terminal block 22 includes two-pole screw terminals 23, 23, and the two-pole screw terminals 23, 23 are electrically connected to a blade member for signal transmission.

  Furthermore, two sets of wire insertion holes 20 are provided on the back surface of the container body 4 as shown in FIG. Inside the vessel body 4 are housed three sets of terminal portions having a quick-connection terminal structure to which the core wires of the electric wires inserted from the respective electric wire insertion holes 20 are electrically connected. The AC / DC converter 71 By connecting the output line and the ground line to the three sets of terminal portions, a DC power is supplied to the blade receiving members 35 and 35, and a blade receiving member (not shown) for the ground electrode is grounded. It has become. In addition, a release button operation hole 21 is opened on the back surface of the container body 4 at a position corresponding to each terminal portion, and a tool such as a minus driver is inserted through the release button operation hole 21 and the release button is pressed. By moving, the connection state of the electric wire connected to the terminal portion can be released, and the electric wire can be easily pulled out. In addition, since the terminal part of a quick connection terminal structure is well-known conventionally, the description is abbreviate | omitted.

  Thus, when the fitting portion 12 of the plug 1A suitable for the socket portion 3 is inserted into the plug insertion hole 31, the protruding portions 32 and 33 are inserted into the fitting holes 13 and 14 of the fitting portion 12. At the same time, the reference rib 17 and the identification rib 18 provided on the inner peripheral surface of the fitting portion 12 are engaged with the fitting grooves 37 and 38 of the protruding portion 32, respectively. At this time, the voltage electrode pin terminals 15a and 15b inserted into the protrusion 32 through the terminal insertion holes 34a and 34b of the protrusion 32 are electrically connected to the blade receiving members 35 and 35, respectively. At the same time, the pin terminal 15c inserted into the protrusion 33 through the terminal insertion hole 36a of the protrusion 33 is inserted into the blade receiving member for the ground electrode, and the pin inserted into the protrusion 33 through the terminal insertion holes 36b and 36c. Terminals 16a and 16b are electrically connected to a blade member for signal transmission, respectively. Then, the plug 1A is held in a state where it is connected to the socket portion 3 by the elastic contact force that the blade receiving member 35 and the like elastically contact each pin terminal 15a to 15c, 16a, 16b. In the socket part 3, since the front surfaces of the protrusions 32 and 33 are in a position retracted from the front surface of the container body 4, the protrusion amount of the plug 1 </ b> A connected to the socket part 3 from the front surface of the container body 4 can be reduced.

  As described above, the outlet 2A of the present embodiment includes the signal terminal connection portion 3B in addition to the power supply terminal connection portion 3A and the ground terminal connection portion 3C, and the signal transmission pin terminals 16a and 16b and the ground electrode pins. When the plug 1A having the terminal 15c is connected to the outlet 2A, the voltage electrode pin terminals 15a and 15b of the plug 1A are connected to the power supply terminal connection portion 3A, and the signal transmission pin terminals 16a and 16b are connected to the signal terminal connection portion. 3B, since the pin terminal 15c for the ground electrode is connected to the ground terminal connection portion 3C, the signal transmission terminal included in the load device 60 can be obtained simply by connecting the plug 1A from the load device 60 to the outlet 2A. Since it can be connected to the signal line 80 and the load device 60 is grounded, the labor of wiring connection can be simplified. Further, the power supply terminal connection portion 3A of the outlet 2A is compliant with the IEC standard, and can be connected if it is a plug compliant with the IEC standard, and the signal terminal connection portion 3B is provided outside the power supply terminal connection portion 3A. Therefore, as long as the plug conforms to the IEC standard, a plug that does not include the pin terminals 16a and 16b for signal transmission can be connected.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS.

  Whereas the wiring device described in the first embodiment is used in a SELV circuit, the wiring device of the present embodiment is used in an ELV (Extra Low Voltage) circuit having a lower insulation grade than the SELV circuit. As shown in FIGS. 9 and 10, the plug 1 </ b> B of the present embodiment includes the SELV circuit plug 1 </ b> A described in the first embodiment and a reference rib from the inner peripheral surface of the fitting hole 13. Only the protrusion amount 17 is different, and this protrusion amount is set to be smaller than the protrusion amount of the reference rib 17 provided in the plug 1A for the SELV circuit. Further, the socket part 3 provided in the outlet 2B of the present embodiment has only the socket part 3 for the SELV circuit described in the first embodiment and the depth dimension from the side peripheral surface of the protruding part 32 to the bottom surface of the fitting groove 37. The depth dimension is set to be smaller than the depth dimension of the fitting groove 37 provided in the socket part 3 for the SELV circuit. Since the plug 1B is the same as the plug 1A of the first embodiment except for the protruding amount of the reference rib 17, common constituent elements are denoted by the same reference numerals and description thereof is omitted. Further, since the outlet 2B is the same as the outlet 2A of Embodiment 1 except for the depth dimension of the fitting groove 37, common constituent elements are denoted by the same reference numerals and description thereof is omitted.

  The plug 1B and the outlet 2B of the present embodiment are used in an ELV circuit, and the protrusion amount of the reference rib 17 provided in the plug 1B and the depth dimension of the fitting groove 37 provided in the outlet 2B are SELV respectively. Since the size is set to be smaller than that of the circuit plug 1A and the outlet 2A, the ELV circuit plug 1B can be connected to the SELV circuit outlet 2A, but the SELV circuit plug 1A is connected to the outlet 1A. Even if an attempt is made to connect to the outlet 2B for the ELV circuit, the reference rib 17 interferes with the fitting groove 37 so that the connection cannot be made. Here, since the ELV circuit has a lower insulation grade than the SELV circuit, it is considered that the load device for the ELV circuit has a better insulation measure than the load device for the SELV circuit, and is therefore used in the ELV circuit. Even if the load device 62 to be used is used in the SELV circuit, it is considered that no safety problem will occur. Therefore, the plug 1B for the ELV circuit can be connected to the outlet 2A for the SELV circuit. Contrary to the above, the load device 60 used in the SELV circuit may not necessarily have sufficient insulation measures for the device itself compared to the load device 62 used in the ELV circuit. If the device 60 is used in an ELV circuit, an accident such as an electric shock may occur. However, since the SELV circuit plug 1A cannot be connected to the ELV circuit outlet 2B, the load device 60 for the SELV circuit is not connected. It is not used in ELV circuits.

  By the way, the plug 1B of the present embodiment includes a ground electrode pin terminal 15c and signal transmission pin terminals 16a and 16b in addition to the voltage electrode pin terminals 15a and 15b. In addition to the power supply terminal connection portion 3A, a signal terminal connection portion 3B and a ground terminal connection portion 3C are provided. However, as shown in FIG. 11, the plug 1B ′ and the signal terminal without the signal transmission pin terminals 16a and 16b are provided. As shown in FIGS. 12 and 13, there is no wiring device constituted by the outlet 2B ′ having no connection portion 3B, and no plug 1B ″ having no ground electrode pin terminal 15c and no ground terminal connection portion 3C. A wiring device composed of the outlet 2B ″ is also conceivable. Here, FIG. 11 shows the mutual connection relationship between a plurality of types of plugs and outlets (grounding pole, with signal terminal, with grounding pole, non-grounding, with signal terminal), and solid arrows can be connected to each other. Plugs and outlets, and dotted arrows indicate plugs and outlets that cannot be connected. If the rated voltage is the same as shown in the figure, the grounding electrode, plug 1B with signal terminal and outlet 2B, plug 1B 'and outlet 2B' with grounding electrode, ungrounded, plug 1B "with signal terminal and outlet 2B" Can be connected to each other. Further, the plug 1B ′ with the ground electrode can be connected to the outlet 2B with the ground electrode and the signal terminal, but cannot be connected to the outlet 2B ″ without the ground terminal connection portion 3C. The plug 1B ″ with a signal terminal can be connected to the outlet 2B with a ground electrode and a signal terminal, but cannot be connected to the outlet 2B ′ that does not have the signal terminal connection portion 3B. Yes.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the outlet 2A described in the first embodiment is provided with a retaining means for preventing the plug 1A connected to the socket portion 3 from coming off, thereby preventing the plug 1A from falling off. In addition, since it is the same as that of the structure of Embodiment 1 except the point provided with the securing means, the same code | symbol is attached | subjected to a common component and the description is abbreviate | omitted.

  As shown in FIGS. 14 (a) and 14 (b), the socket portion 3 of the outlet 2A is connected to the inner wall of the plug insertion hole 31 from the bottom wall of the plug insertion hole 31 to the front of the opening in the plug insertion / removal direction. A locked groove 39 extending along the surface is formed.

  On the other hand, the plug 1 </ b> A is provided with an elastic locking piece 19, one end of which is connected to the gripping part 11, in an integral part with the gripping part 11 at a portion facing the locked groove 39. On the other end side of the elastic locking piece 19, a locking claw 19 a that locks with the locked groove 39 of the socket part 3 while being connected to the socket part 3 is provided, and the locking claw 19 a is locked. The elastic locking piece 19 can be freely bent in the direction away from the groove 39. In the state where the plug 1A is connected to the socket portion 3, the intermediate portion of the elastic locking piece 19 is exposed to the outside of the plug insertion hole 31, and this exposed intermediate portion determines the locking state of the locking claw 19a. The operation unit 19b is pushed to release it.

  Thus, when the plug 1A is connected to the socket portion 3, when the fitting portion 12 of the plug 1A is inserted into the plug insertion hole 31, the socket portion 3 protrudes into the fitting holes 13 and 14 of the plug 1A. The parts 32 and 33 are inserted, and the pin terminals 15 a and 15 b and the pin terminal 16 are electrically connected to the blade receiving member 35 of the socket part 3. At this time, when the plug 1A is inserted to a position where the locking claw 19a of the elastic locking piece 19 comes into contact with the inner wall of the plug insertion hole 31, the locking claw 19a is pressed against the inner wall of the plug insertion hole 31 to be elastic. When the locking piece 19 is bent inward and then the plug 1A is further inserted, the locking claw 19a of the elastic locking piece 19 is locked with the locked groove 39 as shown in FIG. Is prevented from falling off.

  On the other hand, when the plug 1A is removed from the socket portion 3, when the operation portion 19b provided in the middle portion of the elastic locking piece 19 is pushed, the elastic locking piece 19 is bent inward, and the locking claw Since 19a goes out of the locked groove 39, the locked state of the locking claw 19a and the locked groove 39 is released, and the plug 1A can be easily pulled out from the socket portion 3.

  As described above, in the present embodiment, as the retaining means, the elastic locking piece 19 having the locking claw 19a is provided on the plug 1A, and the locking claw 19a of the elastic locking piece 19 provided on the plug 1A is locked. The locked groove 39 is provided in the socket portion 3 and the locking claw 19a is locked to the locked groove 39 when the plug is connected to prevent the plug 1A from coming off. The present invention is not limited to the above form, and any form may be used as long as the plug 1A can be prevented from being detached. For example, a locking claw that locks in a locked groove provided in the plug 1A when the plug is connected may be provided in the socket portion 3 as a retaining means.

  In the present embodiment, the plug 1A and the outlet 2A described in the first embodiment are provided with the retaining means. However, the plugs 1B, 1B ′, 1B ″ and the outlets 2B, 2B ′, 2B ″ described in the second embodiment are described above. Needless to say, a retaining means (consisting of the elastic locking piece 19 and the locked groove 39) may be provided.

The wiring apparatus for DC power supplies of Embodiment 1 is shown, (a) is a front view of an outlet socket, and (b) is a front view of a plug. The wiring apparatus for alternating current power supplies same as the above is shown, (a) is a front view of an outlet, and (b) is a front view of a plug. The outlet shown above is shown, (a) is a front view, (b) is a right side view, (c) is a rear view, and (d) is a bottom view. The outlet socket same as the above is shown, (a) is an enlarged view of the socket part, (b) is an AA sectional view, and (c) is a BB sectional view. The position of the fitting groove | channel provided in the socket part same as the above is shown, (a) is explanatory drawing in the case of DC power supply, (b) is explanatory drawing in the case of AC power supply. The plug is the same as above, (a) is a front view, (b) is a CC cross-sectional view, and (c) is a DD cross-sectional view. It is an external appearance perspective view of a plug same as the above. The position of the identification rib provided in the plug is shown, (a) is an explanatory diagram in the case of a DC power supply, (b) is an explanatory diagram in the case of an AC power supply. The wiring apparatus for DC power supplies of Embodiment 2 is shown, (a) is a front view of an outlet socket, and (b) is a front view of a plug. The wiring apparatus for alternating current power supplies same as the above is shown, (a) is a front view of an outlet, and (b) is a front view of a plug. It is explanatory drawing which shows the connection relationship of multiple types of wiring apparatuses same as the above. The wiring apparatus for another DC power supply same as the above is shown, (a) is a front view of the outlet, and (b) is a front view of the plug. The wiring apparatus for another alternating current power supply same as the above is shown, (a) is a front view of an outlet, (b) is a front view of a plug. The electrical outlet which comprises the wiring apparatus of Embodiment 3 is shown, (a) is an enlarged view of a socket part, (b) is EE sectional drawing. The plug which comprises the same is shown, (a) is a front view, (b) is FF sectional drawing. It is sectional drawing of the state which connected the same outlet socket and plug.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A Plug 2A Outlet 3 Socket part 3A Power supply terminal connection part 3B Signal terminal connection part 3C Ground terminal connection part 5A Power supply terminal part 5B Signal terminal part 5C Ground terminal part 12 Fitting part 13 Fitting hole 31 Plug insertion holes 32, 33 Projection part 34a, 34b Terminal insertion hole 35 Blade receiving member 15a-15c Pin terminal 16a, 16b Pin terminal

Claims (12)

Plugs with a fitting part with a round hole-like fitting hole on the front and a plurality of pin terminals for voltage electrodes arranged along the plug insertion / removal direction inside the fitting hole are detachably connected. And an outlet for supplying power to the load side through a plug,
A cylindrical shape that protrudes forward from the bottom surface of the plug insertion hole and is inserted into the fitting hole with a gap provided between the plug insertion hole and the inner peripheral surface of the plug insertion hole. Electrically connected to the voltage electrode pin terminal inserted into the protrusion through the terminal insertion hole, the terminal insertion hole into which the voltage electrode pin terminal is inserted and connected to the front of the protrusion A power receiving terminal connecting part conforming to the IEC standard, in which a pin terminal for a voltage electrode included in the plug is detachably connected,
An electrical outlet comprising a signal terminal connection portion provided at a different location from the power supply terminal connection portion, to which a signal transmission pin terminal provided in the plug is detachably connected.   2. The outlet according to claim 1, wherein a ground terminal connecting portion to which a pin terminal for a ground electrode provided in the plug is detachably connected is provided at a position different from the power terminal connecting portion and the signal terminal connecting portion. .   The outlet according to claim 1, wherein the power terminal connecting portion includes a misconnection preventing unit that prevents a plug having a different feeding voltage from being connected.   The outlet according to any one of claims 1 to 3, further comprising a retaining means for retaining the plug connected to the power terminal connecting portion. A plug-like hole that opens in a round hole shape, a columnar protrusion that protrudes forward from the bottom surface of the plug-insertion hole with a gap provided between the inner surface of the plug-insertion hole, and the protrusion A plurality of power supply terminal insertion holes for voltage electrodes opened on the front surface of the unit, and a plurality of blade receiving members for voltage electrodes arranged facing the power supply terminal insertion holes inside the protrusion A plug that is removably connected,
A fitting part that is inserted into and removed from the plug insertion hole, a round hole-like fitting hole that opens on the surface of the fitting part and into which the protruding part is inserted, and a plug that is inserted into and removed from the fitting hole. IEC standard including a plurality of pin terminals for voltage electrodes that are arranged along the direction and are inserted into the protrusions from the terminal insertion holes and electrically connected to the blade receiving member for voltage electrodes. A compliant power terminal,
For signal transmission, which is provided in a portion different from the power supply terminal portion, is inserted into a signal terminal insertion hole provided in the outlet, and is electrically connected to a signal transmission blade receiving member disposed inside the outlet. A plug comprising a signal terminal portion having a pin terminal.   Grounding provided in a different part from the power terminal part and the signal terminal part, inserted into the grounding terminal insertion hole provided in the outlet, and electrically connected to the blade receiving member for the grounding electrode arranged inside the outlet 6. The plug according to claim 5, further comprising a pin terminal for a pole.   The plug according to any one of claims 5 and 6, further comprising erroneous connection prevention means for preventing connection to outlets having different power supply voltages.   The plug according to any one of claims 5 to 7, further comprising a retaining means for retaining the plug while being connected to an outlet. A plug connected to the electric wire, and an outlet disposed on the construction surface, the plug being detachably connected and supplying power to the load side through the plug,
The plug includes a fitting portion in which a round hole-shaped fitting hole is opened, a plurality of pin terminals for voltage electrodes arranged along the plug insertion / removal direction inside the fitting hole, and the outside of the fitting hole With a pin terminal for signal transmission arranged along the plug insertion / extraction direction at the site,
The outlet is
A cylindrical shape that protrudes forward from the bottom surface of the plug insertion hole and is inserted into the fitting hole with a gap provided between the plug insertion hole and the inner peripheral surface of the plug insertion hole. A plurality of terminal insertion holes into which a plurality of pin terminals for voltage electrodes are inserted and connected to the front surface of the protrusions, and for voltage electrodes inserted into the protrusions through the terminal insertion holes A plurality of blade receiving members that are electrically connected to the pin terminals, respectively, and a power terminal connecting portion that conforms to the IEC standard, in which a pin terminal for a voltage electrode included in the plug is detachably connected,
A wiring device comprising: a signal terminal connection portion provided in a different part from the power supply terminal connection portion, to which a signal transmission pin terminal provided in the plug is detachably connected.   The plug is provided with a pin terminal for a ground electrode, and the ground terminal in which the pin terminal for the ground electrode is detachably connected to a portion different from the power terminal connection portion and the signal terminal connection portion. The wiring device according to claim 9, further comprising a connection portion.   11. The wiring device according to claim 9, wherein the power supply terminal connection unit includes a misconnection prevention unit that prevents a plug having a different power supply voltage from being connected.   The wiring device according to any one of claims 9 to 11, further comprising a retaining means for retaining the plug connected to the outlet.

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