JP5351697B2 - Wiring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiring device for allowing easy alignment of a plug when connected while preventing the reverse insertion of the plug, without increasing its size. <P>SOLUTION: The wiring device includes a DC receptacle A having a receptacle part 20 on the front face of a receptacle body 1, and a plate frame 110 mounted with the receptacle body 1 and adapted to be fixed to a building surface in the state of storing the rear part of the receptacle body 1 in an embedding hole opened in the building surface. The receptacle part 20 has a plug receiving portion 21 shaped rectangular in a front view and having two pin insertion holes 22 opened, an insertion groove 23 formed around the plug receiving portion 21, and blade receivers to be electrically connected to electrode pins inserted through the two pin insertion holes 22 into the receptacle body 1. The two pin insertion holes 22 are arranged side by side along the upper side of the plug receiving portion 21 while being deflected to a position near the upper side rather than the lower side of the plug receiving portion 21. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a wiring device.

  Conventionally, a DC outlet for supplying DC power to a DC device using a DC power source as a driving power source such as a radio or a telephone has been known (for example, see Patent Document 1).

  The DC outlet shown in the above-mentioned patent document includes a main body housed in a switch box incorporated in a wall, and a converter that converts an AC power source into a DC power source is built in the main body. The surface of the main body facing the switch box is provided with an AC connection terminal to which the power line of the AC power source wired in the wall is connected, and the surface of the main body facing the room is connected from the DC device. An outlet portion to which a plug provided on the wire is detachably connected is provided. Thus, when the AC power supply line is connected to the AC connection terminal of the DC outlet, the converter converts the AC power into DC power and supplies it to the outlet. On the other hand, DC power can be supplied.

  By the way, when a plug is attached to or detached from a DC outlet, an arc may occur. In particular, in the case of a DC outlet that supplies DC power, the arc is likely to persist compared to AC, and thus protection against the arc is necessary. However, in the DC outlet of the above-mentioned patent document, the outlet portion is composed of pin jack type terminals, and there is no member covering the periphery of the electrode on the plug side, so that when the arc occurs, the arc can be seen from the outside. There was a problem.

  As a DC outlet protected against such an arc, there is a socket and a plug for a SELV (Safty Extra Low Voltage) circuit standardized in the IEC standard (CEI / IEC 60906-3). 25 (c) and 25 (d) show a plug 210 standardized to the above IEC standard, and two electrode pins 212 are arranged inside a cylindrical portion 211 provided at the tip. On the other hand, the socket 200 has a round hole 201 into which the cylindrical portion 211 of the plug 210 is inserted as shown in FIGS. 25 (a) and 25 (b). The cylindrical protrusion 202 inserted into the protrusion protrudes, and the blade receiver 204 is accommodated in the protrusion 202 so as to face the pin insertion hole 203 opened at the front end surface of the protrusion 202. When the plug 210 is connected to the socket 200, the electrode pin 212 inserted into the protruding portion 202 through the pin insertion hole 203 is fitted to the blade holder 204, and power is supplied from the socket 200 to the plug 210. .

Japanese Patent Laid-Open No. 7-15835 (paragraphs [0021]-[0023] and FIG. 1)

  In the socket 200 compliant with the IEC standard described above, as shown in FIG. 25A, the two pin insertion holes 203 are on a straight line L1 passing through the center position of the projecting portion 202 and the center of the projecting portion 202. Since the electrode pin 212 is opened in a symmetrical position with respect to the position, a key groove 205 is formed on the outer peripheral surface of the protruding portion 202 so that the electrode pin 212 is not inserted into the pin insertion hole 203 with a wrong polarity. A rib 213 protrudes from the inner peripheral surface of the cylindrical portion 211. Further, the IEC standard socket 200 and the plug 210 correspond to four types of supply voltages, and in order to identify the type of supply voltage, the outer peripheral surface of the protrusion 202 has a predetermined angle with respect to the key groove 205. A voltage identifying groove 206 is formed at the position, and a voltage identifying rib 214 is projected from the inner peripheral surface of the cylindrical portion 211 of the plug 210 at a predetermined angular position with respect to the rib 213.

  By fitting the key groove 205 and the rib 213, the voltage identification groove 206 and the voltage identification rib 214, respectively, it is possible to prevent the plug 210 from being reversely inserted or the plug 210 having a different supply voltage from being erroneously connected. However, since the portion of the socket 200 that fits into the cylindrical portion 211 on the plug 210 side is a round hole, when the cylindrical portion 211 is inserted into the round hole 201, the plug 210 is rotated while the cylindrical portion 211 is rotated. The positions where the provided ribs 213 and 214 fit into the grooves 205 and 206 of the socket 200 have to be searched for, which is inconvenient.

  By the way, in the socket 200 and the plug 210 described above, in order to prevent the plug 210 from being inserted reversely without providing the key groove 205 or the rib 213, two pin insertion holes as shown by a broken line in FIG. 203 may be arranged at a position shifted to one side (for example, the lower side in the figure) with respect to the straight line L1, but since the protrusion 202 is cylindrical, the two pin insertion holes 203 are shifted from the straight line L1 to one side. If it is attempted to dispose the socket 200 at a certain position, the interval between the two pin insertion holes 203 becomes narrow, and there is a problem that the entire socket 200 is enlarged in order to secure an insulation distance.

  The present invention has been made in view of the above problems, and its object is to prevent reverse insertion of the plug without causing an increase in size, and to align the plug when connecting the plug. An object is to provide an easy wiring device.

  In order to achieve the above object, the invention of claim 1 is characterized in that a plug having a plurality of round rod-shaped electrode pins and a rectangular cylindrical peripheral wall surrounding the plurality of electrode pins is detachably connected, The outlet body with the outlet section that supplies DC power to the plug side, and the rear part of the outlet body in the embedded box that is attached to the outlet body and standardized for embedded wiring and embedded in the construction surface And a frame member that is fixed to the embedding box in a state in which the socket is housed, and the outlet portion has a square shape when viewed from the front, and a plurality of pin insertion holes into which the electrode pins of the plug are respectively inserted are opened. Plug receiving portion, an insertion groove formed so as to surround the plug receiving portion and into which the peripheral wall of the plug is inserted, and an electrode pin inserted into the outlet body through a plurality of pin insertion holes, respectively And two pin insertion holes corresponding to the blade holders for supplying DC power among the plurality of pin insertion holes along a reference side which is one side of the plug receiving part. Large-angle continuous wiring that is arranged side by side and arranged at a position closer to the reference side than the side facing the reference side in the plug receiving portion, and the frame member is standardized by Japanese Industrial Standards Compared to the mounting frame of the device, the size of the opening window for mounting the device consists of a wide mounting frame, and the outlet body is wider in front than the large square continuous wiring device standardized by Japanese Industrial Standards It is characterized by being formed.

  In the invention of claim 2, a plug having a plurality of round bar-shaped electrode pins and a rectangular cylindrical peripheral wall surrounding the plurality of electrode pins is detachably connected to supply DC power to the plug side. An embedding box with the rear of the outlet body stored in the embedding box, which is standardized for embedding wiring and embedded in the construction surface A plug member that has a rectangular shape when viewed from the front and has a plurality of pin insertion holes into which the electrode pins of the plug are inserted, and the plug An insertion groove that is formed to surround the receiving portion and into which the peripheral wall of the plug is inserted, and a blade holder that is electrically connected to the electrode pins respectively inserted into the outlet body through the plurality of pin insertion holes. Of the plurality of pin insertion holes, the two pin insertion holes corresponding to the blade holders for supplying DC power are arranged side by side along a reference side which is one side of the plug receiving part, and the plug receiving part In FIG. 2, the outlet body is disposed so as to be closer to the reference side than the side facing the reference side, and the outlet body is formed in a shape and size conforming to the NEMA standard.

  According to a third aspect of the present invention, a plug having a plurality of round bar-shaped electrode pins and a rectangular cylindrical peripheral wall surrounding the plurality of electrode pins is detachably connected to supply DC power to the plug side. An embedding box with the rear of the outlet body stored in the embedding box, which is standardized for embedding wiring and embedded in the construction surface A plug member that has a rectangular shape when viewed from the front and has a plurality of pin insertion holes into which the electrode pins of the plug are inserted, and the plug An insertion groove that is formed to surround the receiving portion and into which the peripheral wall of the plug is inserted, and a blade holder that is electrically connected to the electrode pins respectively inserted into the outlet body through the plurality of pin insertion holes. Of the plurality of pin insertion holes, the two pin insertion holes corresponding to the blade holders for supplying DC power are arranged side by side along a reference side which is one side of the plug receiving part, and the plug receiving part Is arranged so as to be biased closer to the reference side than the side facing the reference side, and the frame member has a shape that can be attached to an embedding box consisting of any one of the A box, BS box, and C box, It is characterized by being formed in a size.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the outlet portion is a blade receiver for supplying direct-current power and a ground that is electrically connected to the electrode pin of the ground electrode as the blade receiver. An electrode blade holder is provided.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the plug receiving portion has a shape in which at least one square corner is cut out according to a difference in supply voltage when viewed from the front. The insertion groove is formed so as to surround the plug receiving portion.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, the plug is continuously extended in the insertion groove and provided on the inner surface of the peripheral wall of the plug according to the type of the power supply circuit that is the power supply source. An identification groove into which the identification rib is inserted is provided.

  The invention of claim 7 is characterized in that, in any one of the inventions of claims 1 to 6, the frame member is provided integrally with the outlet body.

  According to the first aspect of the present invention, the outlet portion has a plug receiving portion having a rectangular shape when viewed from the front and surrounded by an insertion groove, and the plug receiving portion includes a blade holder for supplying DC power. Two corresponding pin insertion holes are arranged along the reference side, which is one side of the plug receiving part, and are also placed close to the reference side of the plug receiving part, so the direction of attaching the plug to the outlet part is easy In addition, by inserting the rectangular cylindrical wall of the plug into the insertion groove provided around the rectangular plug receiving part, the direction in which the plug is attached to the outlet part is limited. It is easy to achieve, and a DC outlet that is easy to use while preventing reverse insertion can be realized. In addition, since the plug receiving portion has a quadrangular shape, even when the two pin insertion holes are arranged close to the reference side, the interval between the two pin insertion holes is not reduced, and an insulation distance is ensured. This will not increase the size of the DC outlet. In addition, the main body of the outlet is designed for embedded wiring by using a frame member in which the size of the opening window for mounting the appliance is wider than the frame member of the large square continuous wiring appliance standardized by Japanese Industrial Standards. Therefore, the outlet main body can be embedded and wired using the existing standardized embedded box.

  According to the second aspect of the present invention, the outlet portion has a plug receiving portion having a rectangular shape as viewed from the front and surrounded by an insertion groove, and the plug receiving portion includes a blade holder for supplying DC power. Two corresponding pin insertion holes are arranged along the reference side, which is one side of the plug receiving part, and are also placed close to the reference side of the plug receiving part, so the direction of attaching the plug to the outlet part is easy In addition, by inserting the rectangular cylindrical wall of the plug into the insertion groove provided around the rectangular plug receiving part, the direction in which the plug is attached to the outlet part is limited. It is easy to achieve, and a DC outlet that is easy to use while preventing reverse insertion can be realized. In addition, since the plug receiving portion has a quadrangular shape, even when the two pin insertion holes are arranged close to the reference side, the interval between the two pin insertion holes is not reduced, and an insulation distance is ensured. This will not increase the size of the DC outlet. In addition, since the outlet body has a shape conforming to the NEMA standard, the outlet body is attached to the embedded box standardized for embedded wiring using the same frame member as the wiring device conforming to the NEMA standard. Since it is attached, the outlet body can be embedded and wired using an embedded box compliant with the NEMA standard.

  According to the invention of claim 3, the outlet portion has a plug receiving portion having a rectangular shape when viewed from the front and surrounded by an insertion groove, and the plug receiving portion includes a blade holder for supplying DC power. Two corresponding pin insertion holes are arranged along the reference side, which is one side of the plug receiving part, and are also placed close to the reference side of the plug receiving part, so the direction of attaching the plug to the outlet part is easy In addition, by inserting the rectangular cylindrical wall of the plug into the insertion groove provided around the rectangular plug receiving part, the direction in which the plug is attached to the outlet part is limited. It is easy to achieve, and a DC outlet that is easy to use while preventing reverse insertion can be realized. In addition, since the plug receiving portion has a quadrangular shape, even when the two pin insertion holes are arranged close to the reference side, the interval between the two pin insertion holes is not reduced, and an insulation distance is ensured. This will not increase the size of the DC outlet. In addition, since the outlet body is attached to the embedded box consisting of any one of the A box, BS box and C box using the frame member, the outlet body is embedded using the standardized existing embedded box. It can be embedded.

  According to the invention of claim 4, by connecting the plug from the load device to the outlet portion, the load device having the plug connected to the outlet portion can be grounded.

  According to the invention of claim 5, since the outer peripheral shape of the plug receiving portion is made different according to the difference in the supply voltage, it is possible to prevent the plugs having different voltages from being connected, and from the outer peripheral shape of the plug receiving portion. The difference in supply voltage can be easily distinguished. In addition, the outer peripheral shape of the plug receiving portion differs depending on the difference in supply voltage, and the outer peripheral shape on the plug side is also different. Therefore, the direction in which the corresponding plug is connected can be easily determined, and the plug can be more easily inserted. Moreover, since the outer peripheral shape of the plug receiving portion is formed by cutting out at least one square corner, the plug receiving portion is not formed in a shape protruding to the outside of the square, and the DC outlet becomes large. Can be prevented.

  According to the invention of claim 6, the type of the power supply circuit can be determined by the identification rib on the plug side and the identification groove on the outlet portion, and the identification groove is provided by extending the insertion groove. Therefore, compared with the case where the identification groove is provided separately from the insertion groove, the strength is easily maintained, and the shape is simple, so that the manufacture becomes easy.

  According to the invention of claim 7, since the frame member is provided integrally with the outlet body, the frame member can be arranged in the embedding box without using a frame member formed separately from the outlet body. And the number of parts can be reduced.

The wiring device of Embodiment 1 is shown, (a) is a front view, (b) is a front view with the decorative plate removed, and (c) is a side sectional view with the decorative plate removed. It is a disassembled perspective view of the DC outlet which comprises the same. The DC outlet which comprises the same is shown, (a) is a front view, (b) is a bottom view, (c) is a rear view, (d) is a right side view. It is an external appearance perspective view of the plug connected to the same. It is the disassembled perspective view which looked at the plate which comprises the same from the front side. It is the disassembled perspective view which looked at the plate which comprises the same from the back side. The plate frame used for the plate which comprises the same is shown, (a) is a front view, (b) is a longitudinal cross-sectional view seen from the left side, (c) is a longitudinal cross-sectional view seen from the right side, (d) is a rear view. , (E) and (f) are cross-sectional views. (A)-(c) is explanatory drawing explaining the procedure which attaches a DC outlet to the plate which comprises the same as the above. (A)-(e) is a front view which shows the construction example same as the above. (A) (b) is a front view which shows the other example of the DC outlet which comprises the same. (A)-(c) is a front view which shows another example of the direct-current outlet which comprises the same. The wiring device of Embodiment 2 is shown, (a) is a front view of the state which attached the DC outlet to the attachment frame, (b) is a side view, (c) is a front view of the state which attached the decorative plate. The other example of a wiring apparatus same as the above is shown, (a) is a front view of a state where a DC outlet is attached to a mounting frame, (b) is a side view, and (c) is a front view of a state where a decorative plate is attached. The wiring apparatus of Embodiment 3 is shown, (a)-(c) is a front view of a DC outlet, (d)-(f) is a front view of an attachment frame, (g)-(j) is the front of an embedding box. FIG. The direct-current outlet which comprises the same is shown, (a) is a front view, (b) is a side view. The attachment frame which comprises the same is shown, (a) is a front view, (b) is a sectional side view. It is a sectional side view of the state which attached the direct-current outlet which comprises the same as the attachment frame. (A) is a front view of a DC outlet and a decorative plate integrated with a mounting frame, (b) is a front view of a DC outlet with an integrated plate, and (c) is a front view of an embedding box. (A) is a front view of a DC outlet and a decorative plate integrated with a mounting frame, (b) is a front view of a DC outlet with an integrated plate, and (c) is a front view of an embedding box. (A)-(e) is a front view of the DC outlet which comprises Embodiment 4. FIG. (A)-(d) is a front view of the DC outlet which comprises Embodiment 5. FIG. It is a front view of the wiring apparatus of Embodiment 6. It is a system configuration figure of a direct-current power distribution system in which a wiring device of each embodiment is used. (A) (b) is explanatory drawing in the case of inserting a flat blade in a pin insertion hole in the DC outlet of each embodiment. The socket and plug for SELV circuits standardized by the IEC standard are shown, (a) is a front view of the socket, (b) is a sectional view of the socket, (c) is a front view of the plug, and (d) is a plug of the plug. It is sectional drawing.

  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. As shown in FIG. 1, this wiring device includes a DC outlet A in which a plug unit 20 detachably connected to a power cord from a load device is provided on the front surface of the outlet body 1, and the outlet body 1. Is installed and the opening of the embedding box is opened with the rear part of the outlet body 1 being housed in the embedding box embedded in the construction surface with the front opening communicating with the embedding hole opening in the construction surface. And an attachment frame 110 (frame member) attached to the portion.

  First, the plug B connected to the DC outlet A will be described with reference to FIG. The plug B includes a horizontally long rectangular parallelepiped plug body 51 that is formed in a size that can be gripped with a synthetic resin by hand, and a round bar-like shape is provided on the front surface of the plug body 51 (a surface facing the DC outlet A). These two electrode pins 52 are projected, and a square cylindrical peripheral wall 53 is projected so as to surround the two electrode pins 52. Here, the length from the front surface of the plug body 51 to the tip of the peripheral wall 53 is set to be slightly larger than the length from the front surface of the plug body 51 to the tip of the electrode pin 52. The two electrode pins 52 are arranged along one wall (for example, the upper side wall) of the peripheral wall 53, and the distance between the electrode pin 52 and the upper side wall of the peripheral wall 53 is the electrode pin 52 and the peripheral wall 53. It arrange | positions so that it may become shorter than the distance with a lower side wall. Further, an electric wire 54 from a load device (not shown) is led out from the rear surface of the plug main body 51. When the plug B is connected to the DC outlet A, the electric wire 54 is connected to the load device via the electric wire 54. Electric power is supplied.

  Next, the DC outlet A will be described. As shown in FIGS. 2 and 3, the outlet body 1 of the DC outlet A is a body formed in a rectangular parallelepiped shape whose front surface is opened using a thermosetting synthetic resin (for example, urea resin) having excellent tracking resistance. 2 and a cover 3 formed in the shape of a rectangular parallelepiped whose rear surface is opened using a synthetic resin (for example, polybutylene terephthalate = PBT) having elasticity and excellent tracking resistance. . Here, the outlet body 1 has a prescribed unit dimension to be described later.

  A pair of assembly claws 2e project from the left and right end faces of the body 2. On the other hand, a boss portion 4 that protrudes forward and fits in the opening window 111 of the plate frame 110 is integrally projected at the center portion in the left-right direction of the cover 3. In addition, shoulder portions 5 project from the left and right end portions of the boss portion 4, and assembly pieces 6 project from the rear edge of the shoulder portions 5 toward the body 2. Each assembly piece 6 is formed with a pair of engagement holes 6a for engaging with the assembly claws 2e of the body 2 in an uneven manner. Thus, when the body 2 and the cover 3 are assembled, when the cover 3 is brought close to the body 2 from the front side and the assembly claw 2e is fitted into the engagement hole 6a provided in the assembly piece 6, the body 2 and the cover 3 Are combined.

  The interior of the body 2 is divided into two internal spaces by a partition wall 7 provided in the middle in the longitudinal direction. The front end portion of the partition wall 7 projects forward from the opening surface of the body 2. In addition, a positioning protrusion 2a protruding forward is provided at an appropriate position on the peripheral wall of the body 2. The partition wall 7 and the positioning projection 2a engage with a recess (not shown) formed in the cover 3 when the body 2 and the cover 3 are coupled to prevent the cover 3 from rattling with the body 2. To do. In addition, a partition wall (not shown) is also formed in the cover 3, and when the body 2 and the cover 3 are joined, the partition wall 7 of the body 2 and the partition wall of the cover 3 are abutted to each other. The internal space is divided into two independent rooms.

  A blade receiving member 9 is accommodated in each of the left and right storage chambers 8 partitioned by the partition wall 7 inside the body 2. Each blade receiving member 9 is formed by a tapered pin receiving portion 9a formed with a plurality of slits extending in the axial direction and a terminal plate 9b integrally connected to the pin receiving portion 9a. Composed.

  Each storage chamber 8 is provided with a pair of locking springs 10 so as to be enclosed in a U-shaped portion of a terminal plate 9 b provided in the blade receiving member 9. The locking spring 10 is formed by bending one end portion of the belt plate in an S shape to form a contact piece 10a and bending the other end portion in a J shape to form a locking piece 10b. The contact piece 10a and the locking piece 10b are accommodated in the body 2 so as to face the side piece 9c of the terminal plate 9b.

  On the rear wall of the body 2, an electric wire insertion port 2b is formed so that an electric wire can be introduced between the locking spring 10 and the side piece 9c of the terminal plate 9b. When an electric wire is inserted from the locking piece 10b side between the locking spring 10 and the side piece 9c of the terminal plate 9b through the electric wire insertion port 2b, the electric wire is connected to the terminal plate by the spring force of the contact piece 10a and the locking piece 10b. The electric wire cannot be pulled out by being sandwiched between the side piece 9c of 9b and the locking piece 10b biting into the electric wire. Thus, since it can connect only by inserting an electric wire in the electric wire insertion port 2b, compared with the case where a screwed terminal etc. are used, a connection work becomes easy. Further, since two electric wires can be connected to each blade receiving member 9 arranged in each storage chamber 8, it is used as a feed wiring for connecting one electric wire to the power source side and the other electric wire to another outlet. For example, the wiring work of connecting a plurality of outlets in parallel is facilitated.

  Furthermore, a release button 11 is disposed in each storage chamber 8 so as to straddle a pair of lock springs 10 respectively opposed to the side pieces 9c of each blade receiving member 9. The release button 11 is in contact with the lock piece 10b of the double lock spring 10, and the part where the release button 11 is in contact with the lock piece 10b is located between the lock piece 10b and the side piece 9c of the terminal plate 9b. It is deviated from the part holding the electric wire. Further, an operation hole 2c is formed in the rear wall of the body 2 at a portion corresponding to the release button 11, and when the release button 11 is pushed by inserting a tip of a minus driver into the operation hole 2c, the operation hole 2c is bitten into the electric wire. The lock piece 10b is bent away from the electric wire so that the electric wire can be pulled out. Here, it is common to use a single wire having an insulation coating as the electric wire, and the length of the insulation coating is important in order to obtain the required connection strength against the drawing of the electric wire. On the rear surface, a groove-like gauge 2d indicating the length for exposing the core wire is provided. At the time of construction, the insulating coating is peeled off so as to expose the core wire corresponding to the length of the gauge 2d.

  On the other hand, the outlet portion 20 described above is provided on the front surface of the cover 3. 2 and 3, the outlet portion 20 is provided in the center of the front surface of the boss portion 4 and has a square shape (for example, a rectangular shape) viewed from the front, and has two round hole shapes. The plug receiving portion 21 in which the pin insertion hole 22 is opened, the insertion groove 23 formed so as to surround the plug receiving portion 21 and into which the peripheral wall 53 of the plug B is inserted, and the outlet body 1 from each pin insertion hole 22 Are provided with the above-described blade receiving member 9 electrically connected to the electrode pins 52 respectively inserted therein.

  The two pin insertion holes 22 are provided corresponding to the two (positive and negative electrode side) blade receiving members 9 for supplying DC power, respectively, and a reference side (this embodiment) which is one side of the plug receiving portion 21. Are arranged along the upper side), and in the plug receiving portion 21, they are arranged in a position closer to the upper side (reference side) than the side (lower side) facing the upper side. The distance from the upper side of the plug receiving part 21 to the pin insertion hole 22 is less than half of the distance from the lower side of the plug receiving part 21 to the pin insertion hole 22, and the pin insertion hole 22 is closer to the upper side. It can be easily discriminated that it is disposed in the position.

  Thus, when the plug B is inserted and connected to the outlet portion 20, when the electrode pin 52 and the pin insertion hole 22 are aligned and the plug B is brought close to the DC outlet A side, first, the peripheral wall of the plug B After 53 is inserted into the insertion groove 23 of the DC outlet A, the electrode pin 52 is inserted into the pin insertion hole 22 and when the plug B is inserted to a predetermined position, the electrode pin 52 is electrically connected to the blade receiving member 9. Mechanically connected. When the electrode pin 52 comes into contact with the blade receiving member 9, the tip of the peripheral wall 53 has already been inserted into the insertion groove 23. Therefore, even if an arc is generated when the electrode pin 52 is in contact, an arc is generated from the outside. Never see.

  Further, when the plug B is pulled out from the DC outlet A, when the plug body 51 is gripped and pulled toward the front side, first, the electrode pin 52 is detached from the blade receiving member 9 and comes out of the pin insertion hole 22. Since the peripheral wall 53 of the plug B comes out of the insertion groove 23, the plug B can be easily removed from the DC outlet A. When the electrode pin 52 is detached from the blade receiving member 9, the tip of the peripheral wall 53 is still inserted into the insertion groove 23, so that an arc is generated when the electrode pin 52 is separated from the blade receiving member 9. However, no arc can be seen from the outside.

  As described above, in the DC outlet A of the present embodiment, the shape of the plug receiving portion 21 inserted into the peripheral wall 53 of the plug B is formed in a quadrangular shape, and two pins that open to the plug receiving portion 21 are formed. The insertion hole 22 is arranged along the upper side (reference side) of the plug receiving part 21, and the distance from the two pin insertion holes 22 to the upper side (reference side) of the plug receiving part 21 is the pin insertion. Since it is biased to the upper side of the plug receiving portion 21 so as to be shorter than the distance from the hole 22 to the lower side of the plug receiving portion 21 (side facing the reference side), the outlet portion 20 The direction in which the plug B is attached can be easily understood. Further, by inserting the rectangular cylindrical peripheral wall 53 of the plug B into the insertion groove 23 provided around the rectangular plug receiving portion 21, the direction in which the plug B is attached to the outlet portion 20 is limited. Compared to a socket for a SELV circuit conforming to the IEC standard having a circular portion, the plug B can be easily aligned, and a DC outlet that is easy to use while preventing reverse insertion can be realized. In addition, the outlet portion 20 is formed with an insertion groove 23 around the plug receiving portion 21 where the pin insertion hole 22 is opened, and prevents reverse insertion like a socket for a SELV circuit compliant with the IEC standard. Therefore, the shape of the outlet portion 20 can be simplified, and the DC outlet A is not increased in size to ensure strength.

  In addition, when the shape of the plug receiving portion 21 viewed from the front is circular, if the two pin insertion holes 22 are arranged close to one side, the interval between the two pin insertion holes 22 is reduced. In the present embodiment, the shape of the plug receiving portion 21 viewed from the front is a quadrangle (rectangular shape), so even when the two pin insertion holes 22 are arranged near the upper side, which is the reference side, 2 The interval between the individual pin insertion holes 22 is not narrowed. Therefore, the DC outlet is not increased in size in order to secure an insulation distance.

  Further, a flat blade-shaped plug blade is provided in the plug B instead of the round bar-shaped electrode pin 52, and as shown in FIG. 24 (a), the plug receiving portion 21 has a pin insertion hole 22 'formed of a rectangular hole. When formed, the flat blade-shaped plug blade is narrower and longer than the round bar-shaped electrode pin 22 so as to have the same cross-sectional area, so that the pin insertion hole 22 formed in the plug receiving portion 21 is formed. 'Is also longer than the round hole-shaped pin insertion hole 22. Here, when the outlet body 1 is formed with one module size, the difference between the vertical dimension (vertical dimension) of the pin insertion hole 22 ′ and the vertical dimension of the plug receiver 21 is small. Even if the pin insertion hole 22 ′ is arranged so as to be biased upward from the center position in the vertical direction of 21, the displacement amount of the pin insertion hole 22 ′ cannot be increased, and the pin insertion hole 22 ′ is located on either side of the upper or lower side. There was a problem that it was difficult to determine whether it was biased to Further, since the pin insertion hole 22 ′ is formed to be slightly longer than the vertical dimension of the flat blade-shaped plug blade, the plug B is reversed left and right when the opening amount of the pin insertion hole 22 ′ is small in the vertical direction. When plugged in the orientation, the end of the flat blade-shaped plug blade may be inserted into the pin insertion hole 22 '. In order to avoid such a problem, as shown in FIG. 24 (b), it is necessary to increase the amount of deviation in the vertical direction at the position where the pin insertion hole 22 ′ is opened. There was also a problem of doing. On the other hand, since the pin insertion hole 22 is formed in a round hole shape in this embodiment, the amount of displacement in the vertical direction can be made larger than that of the rectangular hole-shaped pin insertion hole 22 ′. It can be easily discriminated whether the upper side 22 is biased upward or downward, and the electrode pin 22 of the plug B is not inserted into the pin insertion hole 22 even if the plug B is connected in the left-right direction.

  By the way, in order to embed and arrange the DC outlet A in the construction surface, the plate 100 shown in FIGS. 1 and 5 to 8 is used. The plate 100 includes a plate frame 110 that holds the outlet main body 1 and a decorative plate 120 that covers the plate frame 110 and is applied with a good appearance. The plate frame 110 includes a synthetic resin and a metal. The plate frame 110 made of synthetic resin is insulative, and the left ends of the pair of frame pieces 113a and 113b (the upper ends of FIG. 7 (a)) and the right ends (the lower ends of FIG. 7 (a)). ) Are continuously and integrally joined by the horizontal pieces 112, so that a rectangular opening window 111 exposing the front surface of the outlet body 1 is formed in a vertically long rectangular frame shape having a central portion. On the rear surface side of both side edges along the longitudinal direction of the opening window 111, a strip-like fixed beam portion 114 and a movable beam portion 115 are provided so as to face each other.

  The movable beam portion 115 is continuously and integrally connected to the frame piece 113b via a connecting portion 116 extending in the longitudinal direction of the movable beam portion 115 at both ends in the longitudinal direction, and two intermediate portions are connected to the movable beam portion 115. It is continuously and integrally connected to the frame piece 113b via a bridge portion 117 in the orthogonal direction. Moreover, the part between each connection part 116 and each bridge | bridging part 117 and between both the bridge | bridging parts 117 becomes the slit 118a-118c penetrated in the front and back. The synthetic resin forming the plate frame 110 is flexible, and the movable beam portion 115 and the connecting portion 116 are flexible. The slits 118a and 118c on both sides are formed in an L shape, and the slit 118b in the middle is formed in a straight line. In the frame piece 113b, in the vicinity of each bridge portion 117, a long hole-like groove 119 penetrating the front and back is provided so that the movable beam portion 115 is flexible even at a portion corresponding to the bridge portion 117.

  On the other hand, on one surface of the fixed beam portion 114 and the movable beam portion 115 that faces the opening window 111, a holding groove 114 a as a holding portion that engages with the mounting claws 3 a that protrude in pairs on both side surfaces of the outlet body 1. , 115a are provided at equal pitches for each three pairs (see FIGS. 7B and 7C). Therefore, when the mounting claws 3a provided on the outlet body 1 are engaged with the holding grooves 114a and 115a in a concave-convex manner, the outlet (boss part 4) of the outlet body 1 is exposed to the plate frame 110 with the opening window 111 exposed. The main body 1 can be attached. In addition, the base of the fixed beam 114 and the movable beam 115 is in contact with the front surface of the shoulder 5 projecting on both sides of the outlet body 1 so that the outlet body 1 does not fall forward from the plate frame 110. Portions 114d and 115d are formed. That is, the front surface of the shoulder portion 5 abuts against the abutting portions 114d and 115d, and the rear surface of the attachment claw 3a is engaged with the holding grooves 114a and 115a, whereby the outlet body 1 is attached to the plate frame 110.

  Here, the mounting claws 3a of the outlet body 1 are introduced into the holding grooves 114a and 115a from the rear surface side of the plate frame 110 at the respective front end portions of one surface of the fixed beam portion 114 and the movable beam portion 115 facing the opening window 111. In order to guide each attachment claw 3a to the holding grooves 114a and 115a, guide portions 114b and 115b having inclined surfaces that are inclined so as to increase the distance from each other toward the tip end side are provided. That is, as shown in FIGS. 8A to 8C, in order to attach the outlet body 1 to the plate frame 110, the mounting claws 3 a protruding from one side surface of the outlet body 1 are provided in the holding grooves 114 a of the fixed beam portion 114. When the outlet main body 1 is pushed forward with respect to the plate frame 110 with the front end of the outlet main body 1 substantially aligned with the opening window 111, the mounting claws 3a protruding from the other side of the outlet main body 1 are While the movable beam portion 115 is bent, it is driven into the holding groove 115a by the inclined surface provided on the attachment claw 3a and the guide portion 115b, and the attachment claw 3a can be easily engaged with the holding groove 115a.

  On the other hand, the base of the fixed beam portion 114 is provided with an instrument removal hole 114c penetrating the plate frame 110 from the front and back between each pair of adjacent holding grooves 114a, and the outlet body 1 is attached to the plate frame 110. In such a state, when the tip of a screwdriver or removal tool is inserted into the tool removal hole 114c and the outlet body 1 is pushed toward the movable beam 115 with the tip of the tool, the movable beam can be moved with a slight force by the lever principle. The portion 115 can be bent, and the outlet main body 1 can be detached from the plate frame 110 by releasing the engagement state between the holding groove 114a on the fixed beam portion 114 side and the mounting claw 3a of the outlet main body 1. ing.

  As described above, the plate frame 110 has three pairs of holding grooves 114a and 115a in the fixed beam portion 114 and the movable beam portion 115, respectively, and the outlet body 1 has a pair of mounting claws 3a on each side surface. Therefore, it is possible to attach up to three outlet bodies 1 to the plate frame 110. That is, the number of the plate frames 110 is three, and the outlet body 1 whose mounting dimensions are set so that a maximum of three plate frames 110 can be attached to the three plate frames 110 is referred to as one module-sized outlet body 1. I will decide. In this way, by defining the relative mounting dimensions of the outlet body 1 and the plate frame 110, it is possible to attach an arbitrary number of outlet bodies 1 in the range of 1 to 3 to the plate frame 110. Become. The pitch of the holding grooves 114a and 115a provided in the fixed beam portion 114 and the movable beam portion 115 is equal to the pitch of the mounting claws 3a projecting from the side surface of the outlet body 1 having a single module size, and as described above. Since the holding grooves 114a and 115a are equally spaced, if the outlet body 1 has one module size, the plate is formed using any two holding grooves 114a and 115a adjacent to the fixed beam portion 114 and the movable beam portion 115. It can be attached to the frame 110. FIG. 1B shows a state where the outlet body 1 is attached to the center position of the opening window 111.

  Incidentally, a recess 131 is formed in the front surface of the intermediate portion of each horizontal piece 112 of the plate frame 110. Each recess 131 has a box hole 132 through which a box screw for attaching the plate frame 110 to an embedding box (not shown) is inserted, and a screw for directly attaching the plate frame 110 to a construction surface such as a wall surface. And a scissor fitting locking hole 134 for engaging a scissor fitting (not shown) used when attaching to a wall panel or the like forming the construction surface.

  Further, at the four corners of the plate frame 110, decorative plate locking holes 135 for locking the locking protrusions 123 protruding from the rear surface of the decorative plate 120 are provided. The decorative plate 120 can be detachably attached so as to cover the front surface of the plate frame 110 by inserting and locking.

  The decorative plate 120 is formed using an insulating synthetic resin, and has a rectangular main portion 121 that covers the front surface of the plate frame 110, and the entire periphery from the periphery of the main portion 121. Thus, it is formed in a substantially box shape in which the side wall 122 protruding rearward is integrally formed. The locking projections 123 are projected from the four corners on the rear surface side of the main portion 121. In addition, an opening window 121 a that exposes the front surface of the outlet body 1 attached to the plate frame 110 is provided at the center of the main portion 121.

  Further, as shown in FIG. 8, an inclined surface 122 a is formed on the inner side surface of the side wall 122 of the decorative plate 120 so as to widen the opening width toward the tip side, and is in contact with the side surface of the plate frame 110. A plurality of restriction ribs 124 are provided to prevent the positional displacement of the decorative plate 120 with respect to the frame 110.

  By the way, as shown in FIG.5 and FIG.7 (a) (f), on the outer surface of both the frame pieces 113a and 113b of the plate frame 110, the inclined surface 113c which inclines so that it may protrude outside back, and an inclined surface A protruding portion 113d protruding outward is formed continuously with 113c. Further, a rib 125 whose rear end surface comes into contact with the front surface of the overhanging portion 113d protrudes on the inner side surface of the both side walls 122 in the short width direction of the decorative plate 120, and the rib 125 prevents the decorative plate 120 from rattling. Is done. Further, when the decorative plate 120 is attached to the plate frame 110, the restriction ribs 124 of the decorative plate 120 are guided by the inclined surfaces 113c formed on the frame pieces 113a and 113b of the plate frame 110, so that the attachment is easy.

  A pair of cutouts 126 are provided on one of the upper and lower side walls 122 of the decorative plate 120, and a tool (such as a tip of a minus screwdriver) is inserted into the cutout 126 so that the decorative plate 120 is separated from the plate frame 110 ( When a forward force is applied, the engagement state between the locking projection 123 of the decorative plate 120 and the decorative plate locking hole 135 of the plate frame 110 is released, and the decorative plate 120 can be removed from the plate frame 110. In the frame piece 113b of the plate frame 110, a relief portion 136 that is recessed inward from the inclined surface 113c is provided at a position corresponding to the notch portion 126, and the tool inserted into the notch portion 126 is escaped and inserted to the back. This is so that force can be easily applied when the decorative plate 120 is removed. Further, a rib 137 thinner than the protruding portion 113 d is extended from the rear surface side end portion of the relief portion 136 to the extent that it does not protrude from the cutout portion 126 of the decorative plate 120. That is, there is a risk of scratching the construction surface by applying a force to the tool inserted into the notch 126 with the portion that contacts the construction surface as a fulcrum, but the tool inserted into the notch 126 by providing the rib 137 Can abut against the ribs 137 and prevent the construction surface from being damaged by the tool when the decorative plate 120 is removed from the plate frame 110.

  Further, on the rear surface side of the decorative plate 120, protruding strips 128a to 128c that are respectively inserted into the three slits 118a to 118c provided in the plate frame 110 when attached to the plate frame 110 are arranged in a row. Here, the dimension of each protrusion piece 128a-128c is the state inserted in each slit 118a-118c of the plate frame 110, between the inner peripheral surface of slit 118a-118c, and each protrusion piece 128a-128c. The dimensions are set so that only a slight gap is generated. That is, in a state where the decorative plate 120 is attached to the plate frame 110 to which the outlet body 1 is attached, the three protrusion pieces 128a to 128c are fitted into the slits 118a to 118c of the plate frame 110, and the slits 118a to 118c Since only a slight gap is generated between the peripheral surface and each of the protrusion pieces 128a to 128c, the movement (flexure) of the movable beam portion 115 of the plate frame 110 is restricted. As a result, even when an impact, such as pulling out the plug B inserted into the DC outlet A with an abnormally large force, is applied, the movement of the movable beam 115 is restricted, so that the mounting claws 3a of the outlet body 1 Locking of the movable beam portion 115 and the holding grooves 115a and 114a of the fixed beam portion 114 is difficult to be released, and the outlet body 1 can be prevented from coming off.

  As described above, in the wiring device of this embodiment, the outlet unit 20 to which the plug B for DC power supply is detachably connected is provided on the front surface of the outlet body 1 and the outlet body 1 is attached. Attached to the opening of the embedding box with the rear part of the outlet body 1 stored in the embedding box embedded in the construction surface with the front opening communicating with the embedding hole opening in the construction surface. The plate 100 (frame member) is provided, and the DC outlet A can be embedded by using the plate 100. In addition, since the outlet main body 1 of the DC outlet A is formed in one module size, as shown in FIG. 9A, three DC outlets A can be arranged in parallel to the plate frame 110. As shown in FIGS. 9B to 9D, the DC outlet A can be arranged in parallel with the plate frame 110 together with other wiring devices. Here, in the form of FIG. 9B, the DC outlet A is juxtaposed with the plate frame 110 together with the TV outlet 40 and the LAN modular outlet 41. 9C, the DC outlet A is juxtaposed on the plate frame 110 together with the LAN modular outlet 41 and the telephone modular outlet 42. In the form of FIG. 9D, two DC outlets A are provided. Are arranged side by side with a wiring device 43 such as a pilot lamp. Furthermore, in the embodiment of FIG. 9 (e), an AC power outlet 44 formed in three module dimensions and three DC outlets formed in one module dimension using two plate frames. A is juxtaposed.

  Here, the DC outlet A of the present embodiment is formed in one module size, and the dimension in the short width direction of the boss portion 4 is substantially equal to one module of a large-angle continuous wiring apparatus standardized by Japanese Industrial Standards. (About 23 mm), the longitudinal dimension of the boss is set wider (about 36 mm) than one module of the large-angle continuous wiring apparatus. Further, the plate 100 of the present embodiment is formed such that the longitudinal dimension of the opening window 111 is substantially the same as the mounting frame of the large-angle continuous wiring apparatus standardized by the Japanese Industrial Standard, and the short width of the opening window 111. The directional dimension is wider than the mounting frame of the large-angle continuous wiring apparatus, and such a DC outlet A and plate 100 are used in countries and regions such as the People's Republic of China, Thailand, Indonesia, Taiwan, etc. It is used.

  In the above-described DC outlet A, one outlet portion 20 is provided on the front surface of the outlet body 1 formed in a single module size. However, as shown in FIGS. May be formed in a module size, and one or two outlet portions 20 may be provided on the front surface of the outlet body 1. Further, as shown in FIGS. 11A to 11C, three outlet main bodies 1 are formed in a module size, and one, two, or three outlet portions 20 are provided on the front surface of the outlet main body 1. Anyway. In the example shown in FIG. 10 (a) or FIG. 11 (a) (b), DC power having the same voltage value is supplied from the outlet unit 20 provided with a plurality of ports (two ports or three ports). However, a DC-DC converter may be built in the outlet body 1, and a plurality of types of DC voltages may be generated by the DC-DC converter and supplied to the outlet unit 20 having a plurality of ports.

  By the way, the wiring device of this embodiment and wiring devices of other embodiments described later are used in the DC power distribution system shown in FIG. Although FIG. 23 shows an example in which the DC power distribution system is applied to a house H of a detached house, it goes without saying that the DC power distribution system may be applied to a building such as an apartment house or a tenant building.

  The house H has a direct current power supply unit 72 that outputs direct current power, and a direct current outlet A that is disposed at a main point in the house H and is supplied with direct current power from the direct current power supply unit 72 via the direct current supply line Wdc. And a plurality of DC devices (for example, a refrigerator 80a, a television 80b, a telephone 80c, etc.) that operate with DC power, and by connecting the plug B from the DC devices 80a to 80c to the DC outlet A, the DC devices DC power is supplied to 80a to 80c. Further, a current flowing through the DC supply line Wdc is monitored between the DC power supply unit 72 and the DC outlet A, and when an abnormality is detected, the DC power supply unit 72 connects to the DC outlet A on the DC supply line Wdc. A DC breaker 73 is provided to limit or cut off the power supply.

  The DC power supply unit 72 basically converts the AC power supply AC supplied from outside the house like a commercial power supply to generate DC power. In the configuration shown in the figure, the AC power source AC is input to an AC / DC converter 74 including a switching power source through a main circuit breaker 71 attached as an internal unit to the distribution board 70. The DC power output from the AC / DC converter 74 is connected to each DC breaker 73 through the cooperative control unit 75.

  The DC power supply unit 72 is provided with a secondary battery 77 in preparation for a period during which no power is supplied from the AC power supply AC (for example, a power failure period of the commercial power supply AC). It is also possible to use a solar cell 76 and a fuel cell 78 that generate DC power. The solar cell 76, the secondary cell 77, and the fuel cell 78 are distributed power sources with respect to the main power source including the AC / DC converter 74 that generates DC power from the AC power source AC. In the illustrated example, the solar cell 76, the secondary battery 77, and the fuel cell 78 include a circuit unit that controls the output voltage, and the secondary battery 77 includes a circuit unit that controls charging as well as discharging.

  Here, since the driving voltages of the DC devices 80a to 80c are selected from a plurality of types of voltages according to the devices, a DC / DC converter is provided in the cooperative control unit 75, and a DC voltage obtained from the main power source and the distributed power source is required. It is desirable to convert the voltage into a suitable voltage and supply it to the corresponding DC outlet A, and the supply voltage of the DC voltage may be appropriately determined according to the DC equipment used, the usage environment of the building, or the like. Here, a power supply circuit that supplies DC power to the DC outlet A is provided between the AC power supply AC and the DC outlet A, and is provided, for example, inside the distribution board 70.

(Embodiment 2)
A wiring device according to a second embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 12, the wiring device according to the present embodiment includes a DC outlet A, and a mounting frame 60 (frame member) used for embedding the DC outlet A in an embedding hole provided on the construction surface. Consists of.

  As shown in FIG. 12, the outlet main body 1 of the DC outlet A has a substantially rectangular parallelepiped shape, and has a protrusion 1a having a circular shape in plan view on the front surface. The protrusion 1a is described in the first embodiment. An outlet portion 20 is provided. Further, screw terminals 18 for connecting electric wires from an external power source are provided on the left and right side surfaces of the outlet body 1. The outlet main body 1 of the DC outlet A is formed in a shape and size conforming to the NEMA standard (National Electrical Manufacturers Association) standard W6D, and is formed in the same shape as an outlet used in the United States and the like.

  The mounting frame 60 is made of metal and has a U-shaped portion 61 that contacts the upper and lower side surfaces and the rear surface of the outlet body 1 of the DC outlet A, and faces outward from the front end portions of the upper and lower pieces of the U-shaped portion 61. The mounting pieces 62 and 62 projecting upward (upper or lower) are formed continuously and integrally. Each attachment piece 62 uses a box hole 63 for inserting a box screw for attachment to an embedding box (not shown) embedded in the construction surface, and a plate screw 66 on the front side of the attachment frame 60. A screw hole 64 for screwing the decorative plate 65 is provided. The decorative plate 65 has a side portion protruding rearward from the periphery of the rectangular plate-shaped main portion 65a, and a DC outlet A from a round hole-shaped window hole 65b provided at the center of the main portion 65a. The protruding platform 1a is exposed.

  As described above, in the present embodiment, since the outlet body 1 of the DC outlet A is formed in a shape and size conforming to the NEMA standard, an embedded wiring apparatus conforming to the NEMA standard is embedded and disposed. The mounting plate 60 can be embedded and used, and when the decorative plate 65 is attached to the front surface side of the mounting frame 65, the protruding base 1a of the DC outlet A is exposed from the window hole 65b of the decorative plate 65, The plug B (see FIG. 4) can be connected to the outlet portion 20 so as to be freely inserted and removed.

  Note that the DC outlet A described above has only one outlet section 20, but two outlet sections 20 may be provided as shown in FIG. The DC outlet A shown in FIG. 13 includes a vertically long rectangular parallelepiped outlet body 1, and is provided with protrusions 1a and 1a having a substantially oval shape in plan view on both the upper and lower sides of the front surface of the outlet body 1, and each protrusion 1a is implemented. The outlet portions 20 described in the first embodiment are provided. Further, the decorative plate 65 attached to the front surface side of the mounting frame 60 is provided with window holes 65b and 65b through which the protrusion 1a is exposed at portions of the main portion 65a facing the protrusions 1a and 1a, respectively. Has been.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. The wiring device of this embodiment includes a mounting frame 190 fixed to a BS box 300 mainly used in the UK and Middle East countries and a GB box 310 mainly used in the People's Republic of China. It consists of a DC outlet A that is worn. As shown in FIG. 14 (h), the BS box 300 has a substantially box-like shape with an open front, and a tongue piece 302 having a screw hole 301 projects from the center of each of the upper, lower, left and right sides of the opening edge. It is installed. The GB box 310 has a substantially box shape with the front surface opened as shown in FIG. 14 (g), and a tongue piece 312 having a screw hole 311 protrudes from the center of the left and right sides of the opening edge. ing.

  The mounting frame 190 has a rectangular frame shape as shown in FIGS. 14 (d), 16 (a) and 16 (b), and is provided with an opening window 191 into which an embedded wiring device is inserted and disposed substantially at the center. The four frame pieces are respectively provided with screw insertion holes 192 through which box screws for screwing into the screw holes 301 and 311 of the BS box 300 and the GB box 310 are inserted. Further, the upper and lower frame pieces are formed with stepped portions 193 that are recessed from the front side at the periphery of the opening window 191.

  On the other hand, the outlet main body 1 of the DC outlet A has a substantially rectangular parallelepiped shape as shown in FIGS. 15 (a) and 15 (b), and a hook 1b projects from the front side to the side. Elastic locking pieces 1c that sandwich the frame piece of the mounting frame 190 with the rear surface are provided on both upper and lower side surfaces. The outlet unit 20 described in the first embodiment is provided on the front surface of the outlet body 1. In addition, since the outlet part 20 is the same as that of Embodiment 1, description is abbreviate | omitted for the detail.

  14A and 15 has a vertical dimension of 42 to 46 mm and a width dimension that is approximately half the width dimension of the opening window 191 (22 to 23 mm). Although it is possible to attach them side by side, there is only one outlet portion 20. On the other hand, in the DC outlet A shown in FIGS. 14 (b) and 14 (c), the width of the outlet body 1 is substantially the same as the width of the opening window 191, and the outlet portion 20 is provided with one or two outlets. ing.

  In constructing the DC outlet A on the construction surface, the outlet body 1 of the DC outlet A is first inserted from the front into the opening window 191 of the mounting frame 190 with the flange 1b facing forward, and the rear surface of the flange 1b. Comes into contact with the upper and lower frame pieces of the mounting frame 190 from the rear side, and between the flange 1b and the elastic locking piece 1c. When the attachment frame 190 is sandwiched, the outlet body 1 is attached to the attachment frame 190 (see FIG. 17). Thereafter, when a box screw (not shown) inserted into the screw insertion hole 192 of the mounting frame 190 is screwed into the screw holes 301 and 311 of the BS box 300 or the GB box 310, the outlet body 1 of the DC outlet A Is attached to the BS box 300 or the GB box 310.

  By the way, the outlet body 1 of the DC outlet A can be attached to a C box 320 which is an embedded box used in the Federal Republic of Germany, the Republic of France, the Republic of Indonesia, and the like. It can be attached using a frame 140. The C box 320 has a bottomed cylindrical shape with an open front surface as shown in FIG. 14 (i), and a tongue piece 322 having a screw hole 321 is symmetric with respect to the center position of the cylinder. Projected at the position. The mounting frame 140 has a rectangular frame shape as shown in FIG. 14 (e), and an opening window 141 into which an embedded wiring device is inserted is provided at a substantially central position. A screw insertion hole 142 through which a box screw to be screwed into the screw hole 321 of the C box 320 is inserted. Further, the upper and lower frame pieces are formed with stepped portions 193 that are recessed from the front side at the periphery of the opening window 191.

  Thus, when the outlet body 1 of the DC outlet A is embedded in the C box 320, the outlet body 1 of the DC outlet A first opens the mounting frame 140 with the flange 1b facing forward. When the rear surface of the flange 1b is inserted into the window 141 from the front and abuts against the step 143 provided on the periphery of the opening window 141, the elastic locking piece 1c contacts the upper and lower frame pieces of the mounting frame 140 from the rear side, The outlet body 1 is attached to the mounting frame 140 by sandwiching the mounting frame 140 between the flange 1b and the elastic locking piece 1c. Thereafter, when a box screw (not shown) inserted into the screw insertion hole 142 of the attachment frame 140 is screwed into the screw hole 321 of the C box 320, the attachment frame 140 holding the outlet body 1 of the DC outlet A is retained. Is attached to the C box 320.

  The outlet body 1 of the DC outlet A can also be attached to an A box 330 which is an embedded box used in countries and regions such as Japan, the United States, Taiwan, etc. It can be attached using the attachment frame 150. As shown in FIG. 14 (j), the A box 330 has a substantially box-like shape with an open front, and a tongue piece 332 having a screw hole 331 protrudes from the upper and lower side walls at the opening. ing. Further, the mounting frame 150 has a rectangular frame shape as shown in FIG. 14 (f), and an opening window 151 into which an embedded wiring device is inserted is provided at substantially the center. A screw insertion hole 152 through which a box screw for screwing into the screw hole 331 of the A box 330 is inserted. The A box is an American type embedded box, which is an embedded box conforming to the NEMA standard.

  When the outlet body 1 of the DC outlet A is embedded in the A box 330, the outlet body 1 of the DC outlet A is first placed in the opening window 151 of the mounting frame 150 with the flange 1b facing forward. When the rear surface of the flange 1b comes into contact with the step portion 153 provided on the periphery of the opening window 151, the elastic locking piece 1c comes into contact with the left and right frame pieces of the mounting frame 150 from the rear side. The outlet body 1 is attached to the mounting frame 150 by sandwiching the mounting frame 150 with the elastic locking piece 1c. Thereafter, a box screw (not shown) inserted through the screw insertion hole 152 of the mounting frame 150 is inserted, and when this box screw is screwed into the screw hole 331 of the C box 330, the outlet body 1 of the DC outlet A Is attached to the C box 330.

  By the way, although the outlet main body 1 of the DC outlet A of the present embodiment described above is formed separately from the mounting frame, the body of the DC outlet A may be configured in a shape in which the mounting frame is integrated. For example, the outlet body 160 of the DC outlet A shown in FIG. 18A is a shape in which the outlet body 1 of the DC outlet A shown in FIG. 14 and the mounting frame 190 for mounting to the BS box 300 or the GB box 310 are integrated. Is formed. That is, the outlet main body 160 is integrally provided with a box-shaped main body portion 161 having the outlet portion 20 formed on the front surface and a flange portion 163 projecting sideways from the four sides of the front side portion of the main body portion 161. A screw insertion hole 162 is provided in the center of each side of 163. A decorative plate 170 having a window hole 171 that exposes the front surface of the main body part 161 is detachably attached to the front surface side of the outlet body 160 so that the outlet part 20 is exposed through the window hole 171. Thus, since the outlet body 160 is formed in a shape in which the attachment frame is integrated, it can be attached to the embedding box (BS box 300 or GB box 310) without using a separate attachment frame. And the number of parts can be reduced. The BS box is an embedded box compliant with the British BS standard, and the GB box is an embedded box compliant with the GB standard defined by the National Standardization Management Committee of the People's Republic of China.

  Further, the outlet body 160 of the DC outlet A shown in FIG. 18A is an integrated body of the outlet body and the mounting frame. However, as shown in FIG. 18B, the shape of the outlet body 165 is changed to the outlet body. You may form in the shape integrated with the attachment frame and the above-mentioned decorative plate 170. FIG. In the figure, reference numeral 166 denotes a screw insertion hole for inserting a box screw. Thus, in this DC outlet A, since the outlet body 165 is formed in a shape in which the mounting frame and the decorative plate are integrated, it can be embedded without using a separate mounting frame or decorative plate. It can be attached to a box (BS box 300 or GB box 310), and the number of parts can be further reduced.

  In addition, in the DC outlet A shown in FIG. 18, the container is formed in a shape in which the attachment frame 190 for attaching to the BS box 300 or the GB box 310 is integrated, but as shown in FIG. The outlet body 180 may be formed in a shape in which the mounting frame 140 attached to the C box 320 is integrated. The outlet main body 180 is integrally provided with a box-shaped main body portion 181 having the outlet portion 20 formed on the front surface, and a flange portion 183 projecting laterally from the four sides of the front side portion of the main body portion 181. A screw insertion hole 182 is provided in the center of each side of 183. A decorative plate 170 having a window hole 171 that exposes the front surface of the main body part 161 is detachably attached to the front side of the outlet main body 180 so that the outlet part 20 is exposed through the window hole 171. . Thus, since the outlet main body 180 is formed in a shape in which the attachment frame is integrated, it can be attached to the embedding box (C box 320) without using the attachment frame formed separately. The C box is an embedded box that conforms to the standards of European continental countries such as the Federal Republic of Germany and the French Republic.

  Further, the outlet body 180 of the DC outlet A shown in FIG. 19A has an integrated mounting frame. However, as shown in FIG. 19B, the shape of the outlet body 185 is changed to the mounting frame and the above-described makeup. The plate 170 may be formed in an integrated shape. In the figure, reference numeral 186 denotes a screw insertion hole for inserting a box screw. Thus, in this DC outlet A, since the outlet main body 185 is formed in a shape in which the mounting frame and the decorative plate are integrated, it can be embedded without using a separate mounting frame or decorative plate. It can be attached to a box (C box 320), and the number of parts can be reduced.

  By the way, in the wiring apparatus of Embodiments 1 and 2 described above, the outlet body may be formed in a shape in which the outlet body and the frame member are integrated as in the present embodiment, and is formed separately from the outlet body. Since the frame member can be embedded in the embedded box without using the frame member, the number of parts can be reduced.

(Embodiment 4)
A fourth embodiment of the present invention will be described with reference to FIG. In the DC outlet A described in the first embodiment, the shape of the plug receiving portion 21 viewed from the front is formed in a square shape (rectangular shape). However, in this embodiment, the shape of the plug receiving portion 21 viewed from the front is used. However, it is formed in a shape in which at least one square (rectangular) corner is cut off according to the difference in supply voltage. In addition, since it is the same as that of the direct current | flow outlet A demonstrated in Embodiment 1 except the shape of the plug receptacle part 21, the same code | symbol is attached | subjected to a common component and the description is abbreviate | omitted.

  The DC outlet A of this embodiment corresponds to, for example, four types of supply voltages of DC6V, 12V, 24V, and 48V. FIG. 20 (a) is for 6V, FIG. 20 (b) is for 12V, c) shows a DC outlet A for 24V, and FIG. In the DC outlet A for 6V, the lower right corner of the plug receiving portion 21 is cut obliquely to provide a tapered portion 21a, and the insertion groove 23 is also formed in accordance with the outer peripheral shape of the plug receiving portion 21. Further, in the DC outlet A for 12V, the lower left corner of the plug receiving portion 21 is cut obliquely to provide a tapered portion 21a, and the insertion groove 23 is also formed in accordance with the outer peripheral shape of the plug receiving portion 21. Further, in the 24V DC outlet A, the plug receiving portion 21 is not provided with a taper portion but is formed in a rectangular shape (rectangular shape). In the 48V DC outlet A, the plug receiving portion 21 is tapered at the lower right corner and the lower left corner. The portions 21 a and 21 a are provided, and the insertion groove 23 is formed in accordance with the outer peripheral shape of the plug receiving portion 21.

  Thus, in the 24V DC outlet A, the shape of the plug receiving portion 21 as viewed from the front remains rectangular, and in the 6V, 12V, and 48V DC outlets A, the square corners are the supply voltage. The plug receiving portion 21 is formed in a shape cut out according to the type, and the outer peripheral shape of the plug receiving portion 21 is varied according to the difference in supply voltage. The difference in supply voltage can be easily distinguished. Further, since the outer peripheral shape of the plug receiving portion 21 is formed in a shape in which at least one square (rectangular) corner is cut off according to the supply voltage, the shape of the plug receiving portion 21 viewed from the front is rectangular. The DC outlet A can be prevented from becoming large without projecting outward.

  Furthermore, the outer peripheral shape of the plug receiving portion 21 is varied according to the difference in the supply voltage, and the outer peripheral shape of the peripheral wall 53 is also changed according to the shape of the plug receiving portion 21 on the plug B side. In addition to preventing different plugs B from being connected, the direction in which the plugs B are connected can be easily identified, making insertion easier.

  In the present embodiment, in the plug receiving portion 21, the corner on the opposite side (lower side) from the upper side where the two pin insertion holes 22 are arranged in a biased manner is cut according to the difference in supply voltage. Since the distance between the portion where the corner is cut off and the pin insertion hole 22 can be increased as compared with the case where the upper corner where the pin insertion hole 22 is biased is cut off, the strength of the plug receiving portion 21 is reduced. There is an advantage that can be suppressed.

  In the present embodiment, the shape of the plug receiving portion 21 is changed by cutting the lower corner of the plug receiving portion 21 in accordance with the type of supply voltage. However, the position and number of cut corners are as described above. The form is not limited, and the corners on the reference side (upper side) where the pin insertion holes 22 are biased may be cut off, or both the upper and lower corners may be cut off. Further, the shape of the part to be cut out is not limited to the above-described form. For example, as shown in FIG. 20 (e), the corner of the plug receiving part 21 may be cut off at a substantially right angle to provide the entering corner part 21b.

  Moreover, in the outlet part 20 of Embodiments 2 and 3 described above, the shape of the plug receiving part 21 as viewed from the front is the same as in this embodiment, and the square (rectangular) corners correspond to the difference in supply voltage. You may form in the shape cut out by at least 1 and can acquire the effect similar to the above-mentioned.

(Embodiment 5)
Embodiment 5 of the present invention will be described with reference to FIG. In the DC outlet A described in the first to fourth embodiments, the shape of the fitting portion with the plug B is not changed according to the type of the power supply circuit that is the power supply source. An identification groove 23 a for identifying the type of the insertion groove 23 is continuously extended from the insertion groove 23. Since the components other than the identification groove 23a are the same as those of the DC outlet A described in the fourth embodiment, common constituent elements are denoted by the same reference numerals and description thereof is omitted.

  As the types of power supply circuits that are power supply sources, SELV circuits, ELV circuits, FELV circuits, and the like are standardized by the IEC standard. As shown in FIGS. Is provided with an identification groove 23 a that is continuous with the insertion groove 23 at the center in the left-right direction on the lower side of the plug receiving portion 21. FIG. 8A shows a DC outlet A for 6V, FIG. 8B shows a DC outlet A for 12V, FIG. 8C shows a DC outlet A for 24V, and FIG. The shape of the plug receiving portion 21 viewed from the front is formed in a shape in which at least one square corner is cut off in accordance with the type of supply voltage. Here, the power supply circuit for supplying DC power to the DC outlet A is provided between the AC power supply AC and the DC outlet A in the DC distribution system of FIG. 23 described above. Is provided.

  Here, since the identification groove 23a is formed by extending the insertion groove 23, the strength of the cover 12 is increased compared to the case where the groove is formed separately from the insertion groove 23 in addition to the insertion groove 23. Easy to maintain and simple in shape to facilitate manufacture. Further, since the identification groove 23a is provided on the side opposite to the side (upper side) where the pin insertion hole 22 is arranged in an offset manner in the plug receiving portion 21, the distance between the pin insertion hole 22 and the identification groove 23a. Can be secured sufficiently, and the strength of the plug receiving portion 21 can be prevented from being lowered. In the present embodiment, the identification groove 23 a is formed by extending the insertion groove 23 toward the plug receiving portion 21, so that the boss portion 4 is compared with the case where the identification groove 23 a is extended to the opposite side of the plug receiving portion 21. The size of the front surface of the DC outlet A can be reduced, and the enlargement of the DC outlet A can be prevented. In addition, the site | part which extends the identification groove | channel 23a, and its shape are not the meanings which limit the said form, The formation site | part, shape, and number of the identification groove | channel 23a will not be ask | required if identification is possible.

  On the other hand, the DC outlet A for the ELV circuit is not provided with the identification groove 23a as shown in FIGS. 20A to 20D, and the type of the power supply circuit can be easily determined depending on the presence or absence of the identification groove 23a. Can be determined.

  Although illustration of the SELV circuit plug B is omitted, in the SELV circuit plug B, an identification rib that fits into the identification groove 23 a is formed on the inner surface of the peripheral wall 53. On the other hand, since the identification rib is not formed in the plug B for the ELV circuit as shown in FIG. 4, the plug B for the ELV circuit has both the DC outlet A for the ELV circuit and the DC outlet A for the SELV circuit. The plug B for the SELV circuit can be connected only to the DC outlet A for the SELV circuit.

  Here, since the SELV circuit has a higher insulation grade than the ELV circuit, a load device (hereinafter referred to as a SELV device) used in the SELV circuit is a load device (hereinafter referred to as an ELV device) used in the ELV circuit. So high insulation performance is not required, and SELV devices often have lower insulation performance than ELV devices. Therefore, if an ELV circuit having a lower insulation grade than that of a SELV circuit and a SELV device having an insulation performance lower than that of an ELV device is used, there is a risk that a failure due to electric leakage may occur. The plug B for the SELV circuit cannot be connected to the DC outlet A for the ELV circuit, but can be connected only to the DC outlet A for the SELV circuit. Therefore, the SELV device is not used in the ELV circuit. . Although there is a possibility that the ELV device is connected to the DC outlet A for the SELV circuit, the ELV device has a higher insulation performance than the SELV device, and the SELV circuit has a higher insulation grade than the ELV circuit. There is no particular problem even if ELV equipment is used in the circuit.

  In addition, in the outlet portion 20 of the above-described second and third embodiments, the identification groove 23a for identifying the type of the power supply circuit according to the type of the power supply circuit that is the power supply source, as in the present embodiment, The insertion groove 23 may be continuously extended, and the same effect as described above can be obtained.

(Embodiment 6)
Embodiment 6 of the present invention will be described with reference to FIG. In the DC outlet according to the present embodiment, as shown in FIG. 22, the plug B with the ground electrode is provided at a position closer to the lower side than the intermediate position of the two pin insertion holes 22 on the front surface of the boss portion 4. A pin insertion hole 24 into which an electrode pin for a round bar-shaped grounding electrode is inserted is opened, and an electric pin is inserted into the outlet body 1 from the pin insertion hole 24 into the outlet body 1. A blade receiving member (not shown) for the ground electrode to be connected is accommodated. In addition, since it is the same as that of Embodiment 1 except that the pin insertion hole 24 for the ground electrode and the blade receiving member are provided, common constituent elements are denoted by the same reference numerals, and the description thereof is as follows. Omitted.

  As described above, the outlet portion 20 is provided with a ground electrode blade holder that is electrically connected to the electrode pin for the ground electrode. As the blade receiver, two blade receiving members 9 for supplying DC power are provided. In addition to 9, a blade holder for a ground electrode that is electrically connected to the electrode pin of the ground electrode is provided. Therefore, by connecting the plug B with the ground electrode from the load device to the outlet portion 20, The load device having the plug B connected to the unit 20 can be grounded.

  In addition, in the wiring devices of the above-described Embodiments 2 to 5, as in the present embodiment, a blade holder that is electrically connected to the electrode pin for the ground electrode provided in the plug B may be provided. Similarly, the load device can be grounded by connecting the plug B from the load device to the wiring device.

A DC outlet B Plug 1 Outlet body 4 Boss portion 9 Blade receiving member 20 Outlet portion 21 Plug receiving portion 22 Pin insertion hole 23 Inserting groove 51 Plug body 52 Electrode pin 53 Peripheral wall 100 Plate 110 Plate frame (frame member)
111 opening window 120 decorative plate

Claims (7)

A plug having a plurality of round rod-shaped electrode pins and a rectangular cylindrical peripheral wall surrounding the plurality of electrode pins is detachably connected, and an outlet portion for supplying DC power to the plug side is provided on the front surface. Outlet body,
The outlet body is attached, and includes a frame member fixed to the embedded box in a state in which the rear portion of the outlet body is housed in an embedded box that is standardized for embedded wiring and embedded in the construction surface,
The outlet portion has a quadrangular shape when viewed from the front, and is formed so as to surround a plug receiving portion having a plurality of pin insertion holes into which electrode pins of the plug are respectively inserted, and surrounding the plug receiving portion. And an insert groove into which the peripheral wall of the plug is inserted, and a blade holder that is electrically connected to the electrode pins respectively inserted into the outlet body through the plurality of pin insertion holes. The two pin insertion holes corresponding to the power supply blade receiver are arranged side by side along a reference side which is one side of the plug receiving portion, and the plug receiving portion is more than the side facing the reference side. It is biased to a position close to the reference side,
The frame member comprises a mounting frame in which the size of the opening window for mounting the appliance is wider than the mounting frame of the large-angle continuous wiring appliance standardized by Japanese Industrial Standards. A wiring device characterized in that the front surface is formed wider than a large-angle continuous wiring apparatus standardized by an industrial standard. A plug having a plurality of round rod-shaped electrode pins and a rectangular cylindrical peripheral wall surrounding the plurality of electrode pins is detachably connected, and an outlet portion for supplying DC power to the plug side is provided on the front surface. Outlet body,
The outlet body is attached, and includes a frame member fixed to the embedded box in a state in which the rear portion of the outlet body is housed in an embedded box that is standardized for embedded wiring and embedded in the construction surface,
The outlet portion has a quadrangular shape when viewed from the front, and is formed so as to surround a plug receiving portion having a plurality of pin insertion holes into which electrode pins of the plug are respectively inserted, and surrounding the plug receiving portion. And an insert groove into which the peripheral wall of the plug is inserted, and a blade holder that is electrically connected to the electrode pins respectively inserted into the outlet body through the plurality of pin insertion holes. The two pin insertion holes corresponding to the power supply blade receiver are arranged side by side along a reference side which is one side of the plug receiving portion, and the plug receiving portion is more than the side facing the reference side. It is biased to a position close to the reference side,
A wiring device, wherein the outlet body is formed in a shape and size conforming to the NEMA standard. A plug having a plurality of round rod-shaped electrode pins and a rectangular cylindrical peripheral wall surrounding the plurality of electrode pins is detachably connected, and an outlet portion for supplying DC power to the plug side is provided on the front surface. Outlet body,
The outlet body is attached, and includes a frame member fixed to the embedded box in a state in which the rear portion of the outlet body is housed in an embedded box that is standardized for embedded wiring and embedded in the construction surface,
The outlet portion has a quadrangular shape when viewed from the front, and is formed so as to surround a plug receiving portion having a plurality of pin insertion holes into which electrode pins of the plug are respectively inserted, and surrounding the plug receiving portion. And an insert groove into which the peripheral wall of the plug is inserted, and a blade holder that is electrically connected to the electrode pins respectively inserted into the outlet body through the plurality of pin insertion holes. The two pin insertion holes corresponding to the power supply blade receiver are arranged side by side along a reference side which is one side of the plug receiving portion, and the plug receiving portion is more than the side facing the reference side. It is biased to a position close to the reference side,
The wiring device according to claim 1, wherein the frame member is formed in a shape and size that can be attached to an embedding box including any one of an A box, a BS box, and a C box.   The outlet portion includes a blade holder for supplying DC power and a blade holder for a ground electrode that is electrically connected to an electrode pin of the ground electrode as the blade receiver. 4. The wiring device according to any one of 3.   The plug receiving portion is formed in a shape in which at least one square corner is cut out according to a difference in supply voltage when viewed from the front, and the insertion groove is formed so as to surround the plug receiving portion. The wiring device according to any one of claims 1 to 4, wherein the wiring device is provided.   An identification groove is provided that extends continuously from the insertion groove and into which an identification rib provided on the inner surface of the peripheral wall of the plug is inserted according to the type of power supply circuit that is a power supply source. The wiring device according to claim 1.   The wiring device according to claim 1, wherein the frame member is provided integrally with the outlet body.

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