JP2006319666A - Wiring accessory for power line communication - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable power line communication without occupying existing outlet. <P>SOLUTION: In this wiring accessory, a plug-in port 3a of a modular jack 3 to which a modular plug additionally provided on the end of a communication cable is connected so as to be freely inserted/withdrawn is exposed on the substantial center of the front face of a housing 1. A terminal portion 4 and a communications interface portion 5 are housed in the housing 1. The terminal portion 4 is connected to the communications interface portion 5 via an insulation transformer T. Thus, since the power line is connected to the communications interface portion 5 by the terminal portion 4 on the rear side of a structural surface (wall surface), the power communication can be performed, without occupying the outlet for connection with the power line. Moreover, if the plug blades of the power supply plug are inserted into the plug blade insertion ports 20 provided on the front face of the housing 1, the power supply plug is connected to the power line via the blade receivers 21 in the housing 1, and power can be supplied to the power supply plug. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power line communication wiring device for performing data communication using a power line wired indoors such as an office or a house.

In recent years, a local area network (LAN) in which a plurality of computers are connected is rapidly spreading in offices and houses. A communication cable (so-called LAN cable) is usually used as a communication medium for connecting computers in such a LAN. However, when a new LAN is introduced into an existing office or house, the labor and cost of wiring work are reduced. In some cases, a radio system using radio waves is employed in consideration (for example, see Patent Document 1).
JP 2005-79977 A

  By the way, the power line communication (Powre Line Communication) which performs data communication using the indoor wiring (power line) for power feeding has been conventionally proposed. In such power line communication, superposition and separation of power and communication signals are performed. An apparatus (PLC modem) to perform is required, and such a PLC modem is connected to an outlet provided on a wall surface via a power cord and connected to a communication device such as a computer via a communication cable. However, since the PLC modem occupies the outlet, it becomes necessary to use a table tap or the like in order to secure the power supply of the computer and other devices.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a power communication wiring device that enables power communication without occupying an existing outlet.

  In order to achieve the above object, the invention according to claim 1 is a substantially box-shaped housing that is embedded in a manner that a rear end portion is embedded in an embedded hole provided in a construction surface, and a power line provided in the housing. A power line communication modem that modulates and demodulates a signal for power line communication via a power line housed in the housing and connected to the terminal section, a power line communication modem housed in the housing, and a communication device A communication interface for interfacing, a connector provided on the front surface of the housing, in which a communication cable for connecting a communication device and the communication interface is removably inserted, and a housing housed in the housing and connected to a power line via a terminal portion The housing is embedded in the construction surface using a series of mounting frames standardized for embedded wiring devices and is connected to the power supply plug. Blade insertion slots which plug pins of is inserted, characterized in that provided on the front surface.

  According to a second aspect of the present invention, there is provided the display device according to the first aspect, further comprising a display unit that is housed in the housing and displays an operation state of the power line communication modem by a display element that is exposed on the front surface of the housing. .

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a power supply unit is provided which creates an operation power supply such as a power line communication modem or a communication interface from an AC power supply housed in the housing and supplied via the power line. It is characterized by that.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the connector has a plug insertion slot into which a modular plug attached to the tip of the communication cable is inserted. It is provided to be rotatable between a position exposed on the front side and a position accommodated in the housing.

  According to the present invention, since the power line communication modem and the power line are connected by the indoor wiring, power communication can be performed without occupying an existing outlet, and the power can be inserted into the plug blade insertion opening via the blade receiver. There is an effect that power can be supplied to the power plug.

(Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 1, the power line communication wiring device A1 of the present embodiment is a substantially box-shaped housing 1 that is embedded and disposed in such a manner that a rear end portion is embedded in an embedded hole provided in a construction surface such as a wall surface. And an attachment frame 2 attached to the housing 1. The mounting frame 2 corresponds to a single mounting frame (a mounting frame for a large-angle continuous wiring instrument standardized by JIS C 8375) that is attached to a single switch box standardized by JIS C 8336. . A screw insertion hole 2a through which a box mounting screw for mounting to the switch box is inserted and a screw hole 2b into which a plate screw for mounting a plate 50 to be described later is screwed are formed at each of the upper and lower portions of the mounting frame 2. Is provided.

  The housing 1 includes a box-shaped body 1a having an open front surface and a cover 1b that closes the front surface of the body 1a. The housing 1 projects from the assembly frame 2c provided on the mounting frame 2 on the side surfaces of the body 1a and the cover 1b. The body 1a and the cover 1b are joined by fitting the fitting protrusion 1c. In addition, a receiving connector (RJ-45 modular jack) to which a connector (RJ-45 modular plug) attached to the tip of a communication cable (CAT5 LAN cable) is detachably connected to the front upper portion of the housing 1. The insertion port 3a of 3) is exposed. The insertion port 3a is closed by two doors 3b and 3c that are movable in the vertical direction so as to be opened and closed, and the modular plug is inserted and removed in a state where the doors 3b and 3c are opened. A knob 3d that protrudes forward is provided at the lower end of the lower door 3c. By moving the doors 3b and 3c upward with the knob 3d, the insertion port 3a can be exposed. it can. A display element (light emitting diode) LD is exposed above the insertion port 3a on the front surface of the housing 1. Further, a pair of plug blade insertion openings 20 and 20 into which the plug blades of the power plug are inserted are provided in the lower part of the front surface of the housing 1, and a pair of plug blades received in the plug blade insertion openings 20 are received in the housing 1. The blade receivers 21 and 21 are accommodated.

  FIG. 2 is a block diagram showing a circuit configuration of the power line communication wiring device A1. The terminal portion 4 is a conventionally known screwless terminal (so-called quick connection terminal), to which a power line wired indoors is connected. A communication interface unit 5 is connected to the terminal unit 4 via a DC cut capacitor C and an insulating transformer T, and a power source unit 6 including an AC / DC converter and a pair of blade receivers 21 and 21 are connected. .

  The communication interface unit 5 is connected to the secondary side of the insulation transformer T and is superimposed on the power line with a transmission / reception unit 7 for transmitting / receiving a power line communication signal (hereinafter referred to as a communication signal) to / from the power line. Connected to a modular jack 3 and a PLC modem 8 having a demodulation function for demodulating a data signal from a communication signal of a predetermined format transmitted and a modulation function for modulating transmission data of a communication device such as a computer into a communication signal of a predetermined format The LAN controller 9 for performing data transmission with a communication device via a communication cable in conformity with a standard such as 100BASE-TX, and the CPU as main components, control the communication interface unit 5 as a whole. And a control unit 10. For example, the control unit 10 controls the display unit 11 in order to notify that the data (packet) filtering is performed between the PLC modem 8 and the LAN controller 9 or that data transmission is in progress. 11 has a function of causing the display element LD of 11 to emit light. The communication interface unit 5 is operated by a DC power source created by the power source unit 6.

  FIG. 3 shows a state in which the power line communication wiring device A1 of the present embodiment is embedded in the embedded hole. The plate 50 has a plate frame (not shown) fixed to the mounting frame 2 of the power line communication wiring device A1 by a plate screw, and a window hole 51a exposing the front surface of the housing 1 of the power line communication wiring device A1. The decorative plate 51 is attached to the plate frame so as to cover the front surface of the plate frame. Here, an electric wire insertion port (not shown) into which a power line is inserted is provided on the rear surface of the housing 1, and the power line inserted into the housing 1 through the electric wire insertion port is connected to the terminal portion 4 for power line communication. The wiring device A1 is connected to the power line.

  As described above, the power line communication wiring device A1 of the present embodiment is connected to the power line by the terminal portion 4 on the back side of the construction surface (wall surface), and therefore does not occupy an outlet for connection with the power line. It can be carried out. In addition, if the plug blade of the power plug is inserted into the plug blade insertion port 20 provided on the front surface of the housing 1, the power plug may be connected to the power line via the blade receiver 21 in the housing 1 to supply power to the power plug. Is possible.

(Embodiment 2)
FIG. 4 shows another embodiment of the present invention. However, since the basic configuration of the power line communication wiring device A2 of the present embodiment is substantially the same as that of the power line communication wiring device A1 of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted. .

  In the power line communication wiring device A2 according to this embodiment, the modular jack 3 exposes the plug insertion port 3a to the front side of the housing 1 (see FIG. 4B) and the position in the housing 1 (see FIG. a) (see FIG. 2). A recess is provided in the center of the front surface of the housing 1, and the movable body 30 holding the modular jack 3 is rotatably accommodated in the recess.

  The movable body 30 is formed in a substantially triangular prism shape, and the modular jack 3 is housed inside with the plug insertion port 3a exposed on the lower surface, and the display element LD is exposed on the front surface. Shaft protrusions (not shown) are respectively provided on upper portions of the left and right side surfaces of the movable body 30, and these shaft protrusions are inserted into bearing holes (not shown) provided on the recess side surfaces of the housing 1. As a result, the movable body 30 is pivotally supported with respect to the housing 1 so as to be rotatable in the front-rear direction. Here, a torsion coil spring (not shown) is externally attached to the shaft protrusion, and the movable body 30 is elastically biased toward a position where the plug insertion port 3a is exposed to the front side of the housing 1.

  Further, a locking and fixing portion 31 that locks and fixes the movable body 30 in a state where the movable body 30 is housed in the recess is provided at the lower end of the front surface of the housing 1. That is, in a state where the movable body 30 is housed in the recess, a locking piece (not shown) of the locking fixing portion 31 is locked to a locked portion (not shown) provided on the movable body 30. Thus, the movable body 30 can be held in the recessed state against the spring force of the torsion coil spring (see FIG. 4A). Further, the locking and fixing portion 31 is provided so as to be freely bent with respect to the housing 1. By pressing and bending the front surface of the locking and fixing portion 31 with a finger, the locking piece and the locked portion are separated. The lock is released and the movable body 30 is rotated forward by the spring force of the torsion coil spring, so that the plug insertion port 3a is exposed to the front side of the housing 1 (see FIG. 4B).

  Thus, the movable body 30 is rotated only when the modular plug of the communication cable is connected to the modular jack 3 so that the plug insertion port 3a is exposed to the front side of the housing 1, and at other times, the movable body 30 is placed in the recess. Therefore, the appearance of the power line communication wiring device A2 can be improved when not in use.

Embodiment 1 of this invention is shown, (a) is a front view, (b) is a right view. It is a circuit block diagram same as the above. It is a perspective view which shows the state which carried out embedded arrangement | positioning same as the above. FIG. 3A is a perspective view of a state in which the movable body is housed in the recess of the housing, and FIG. 5B is a perspective view of the state in which the movable body is pulled out from the recess of the housing. .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 2 Mounting frame 3 Modular jack 4 Terminal part 5 Communication interface part 6 Power supply part 7 Transmission / reception part 8 PLC modem 9 LAN controller

Claims (4)

  A substantially box-shaped housing that is embedded and embedded in a manner to embed a rear end in an embedding hole provided in the construction surface, a terminal portion that is provided in the housing and to which a power line is connected, and a terminal portion that is housed in the housing A power line communication modem that modulates and demodulates a signal for power line communication via a power line connected to the communication line; a communication interface that is housed in the housing and that interfaces with the power line communication modem and a communication device; and communication that is provided on the front surface of the housing The connector comprises a connector into which a communication cable for connecting the device and the communication interface is removably inserted, and a blade receiver housed in the housing and connected to a power line through a terminal portion. A plug blade insertion slot is provided on the front surface, which is embedded in the construction surface using a series of mounting frames standardized for appliances and into which the plug blade of the power plug is inserted. Power line communication wiring device, characterized in that the.   2. The wiring device for power line communication according to claim 1, further comprising a display unit that is housed in the housing and displays an operation state of the power line communication modem by a display element that is exposed on the front surface of the housing.   3. The power line communication device according to claim 1, further comprising: a power supply unit configured to create an operation power source such as a power line communication modem or a communication interface from an AC power supply housed in the housing and supplied via the power line. Wiring equipment.   The connector has a plug insertion slot into which a modular plug attached to the tip of the communication cable is inserted, and rotates between a position where the plug insertion slot is exposed to the front side of the housing and a position where the plug is accommodated in the housing. The wiring device for power line communication according to any one of claims 1 to 3, wherein the wiring device is freely provided.

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