JP3143429U - Core box of composite outlet box - Google Patents

Abstract

The present invention provides a multimedia-compatible composite outlet box that can reliably shield sneak electromagnetic interference waves and can be easily applied even by an unqualified person.
A core box 1 of the present invention is a rectangular core box 1 having a bottom wall 6 and four side walls 7a to 7d that fit well in an outlet arrangement region 4 for a high-current electric wire. The projections with nuts 8 for screwing the frame body holding the outlet unit to the composite outlet box 2 are slidably passed through substantially the center of the pair of upper and lower side walls 7a, 7b facing each other. A vertical recess 9 extending in the vertical direction from the wall 6 to the upper end edge of the side wall 7a is provided, and a notch 10 through which a wiring cable for a high current wire can pass is provided on one side of the vertical recess 9 on one side wall 7a. The core box bottom wall 6 and side walls 7a to 7d have a laminated structure in which at least both surfaces of the metal shielding core layer are sandwiched between dielectric layers.
[Selection] Figure 1

Description

  The present invention relates to a multimedia-compatible composite outlet box that combines a commercial power outlet with connection terminals such as a telephone, a TV receiver, an Internet connection, a digital home appliance control or an output.

  In order to easily use a commercial power source as a power source for small electric / electronic devices in houses, offices, shops, workplaces, etc., outlets (outlets) arranged on wall surfaces, pillars, floor surfaces, etc. are often used. As the outlet, a partially exposed type is also used, but preferably, the outlet is housed in a metal or synthetic resin box embedded in the wall surface. Such an outlet box is provided with a decorative cover that exposes only the outlets of the outlet unit such as one, two, and three outlets and covers other portions.

  On the other hand, various information devices such as televisions, telephones, the Internet, and security devices are becoming widespread, and signal receiving / connecting parts such as receiving terminals and connectors of these devices need to be arranged in easy-to-use parts. There is. The required number and types of signal transmission / reception connection sections continue to increase due to the progress of IT technology, the spread of digital home appliances, the development of signal transmission lines such as metal cables, coaxial cables, and optical cables. It is desirable from a technical point of view to install these jack units as the connection portions individually and independently.

  However, it becomes excessively complicated, which is inconvenient for practical use in ordinary houses and small offices / shops, and is often unsightly in appearance. Therefore, a multimedia-compatible composite outlet box has emerged that combines a wiring area for mounting a power outlet unit for commercial power and a wiring area for mounting a jack unit that serves as a signal transmission / reception connection part. . (For example, see Patent Document 1 and Patent Document 2.)

  At the time when the Electricity Business Law was enacted, the weak current wires were generally analog lines such as telegraphs, telephones, and faxes, or communication lines based on simple on / off signals of current. Therefore, the target of safety that the law is trying to secure at this point is to avoid the situation where high voltage from the high current wire is applied to the communication device side, which damages the communication device and further causes the danger of electric shock to the user. Because it was intended to do.

  In addition, the purpose of the bulkhead is to reduce the induced voltage generated on the weak current wire side due to the abnormal voltage generated due to the mixed voltage meaning direct contact between the strong and weak wire, the lightning strike voltage on the strong current wire side, etc. It was understood that a solid insulating material was sufficient for the partition wall, and that an appropriate separation distance was sufficient.

Japanese Utility Model Publication No. 4-93422 JP 2006-42516 A

  However, the development of IT technology and digital technology in recent years has been remarkable, and the situation has changed, for example, signals used in response to the demand for higher speed and higher density have shifted to the high frequency range of the GHz range, and signal packet transmission is also frequently used. Yes. Furthermore, semiconductor control of electrical equipment has increased rapidly due to the need for energy saving and precise control, and a lot of harmonic components are included on the commercial power supply side, leading to concern about induction to the signal line side.

  Therefore, the wraparound electromagnetic waves cannot be shielded only by a simple shielding plate that shields only the linear lateral direction as in Patent Documents 1 and 2.

  On the other hand, according to the regulations on the maintenance and operation of general electric works of the Electricity Business Law, and the Ordinance of the Ministry of Economy, Trade and Industry and the electrical equipment technical standards, the high current electric wires connected to the commercial power source and the communication In addition, it is obliged to install facilities so that they do not come into contact with weak current wires (including other water pipes, gas pipes, etc.) used for sending and receiving various signals. In other words, when a high current wire and a weak current wire are close to or cross each other, it is necessary to take a highly safe construction method, set the separation distance to a predetermined value or more, and provide a partition between them. It has been established. Such construction cannot be performed without a qualified person.

  Therefore, the object of the present invention is to allow a non-qualified person to easily take measures that can reliably shield the electromagnetic interference wave even in a multimedia-compatible composite outlet box. The object is to obtain a core box that can be used to reliably isolate both electric wires at places where the electric wires and weak current electric wires are mixed, such as various ceilings and wall walls, which are not normally touched.

  In order to achieve this object, the present invention has an internal space, an outlet arrangement area for heavy current wires, and a jack arrangement for multimedia-related weak current wires such as telephone lines, Internet connection portions, LAN connection portions, etc. A rectangular core box having a bottom wall and four side walls that fits well in the outlet arrangement area for the high-current wire in the composite outlet box divided by a partition wall, and the core box In a substantially central portion of the pair of upper and lower side walls facing each other, there is a pair of upper and lower projections with nuts provided on the composite outlet box in order to screw the frame body holding the outlet unit and the jack unit to the composite outlet box. A vertical recess extending vertically from the bottom wall to the upper edge of the side wall is provided so that it can slide and pass, A notch through which a wiring cable for a high current wire connected to the outlet unit for the high current wire can pass is provided on one side of the vertical depression on one side wall of the wall, and the bottom of the core box Each of the walls and the side walls has a laminated structure in which at least both surfaces of the metal shielding core layer are sandwiched between dielectric layers.

According to the core box of the present invention, even if an unqualified person simply inserts the core box into the outlet arrangement area for the high current wire in a normal composite outlet box, It is possible to reliably shield the weak current wire against interference.
In addition, this core box is interposed between the high current wire and the weak current wire at various places where the high current wire and the weak current wire are mixed, such as the back of the ceiling, the back of the wall, etc. By storing and fixing each electric wire in the recesses on both sides of the box, the two can be reliably isolated.
In this case, the electrical equipment technical standards can be reliably cleared by cascading two core boxes with double-sided adhesive tape.

  In a preferred embodiment of the present invention, the metal shielding core layer has a laminated structure in which not only the surfaces on both sides but also the edges are covered with a dielectric layer. The metal shielding core layer is made of aluminum, and the dielectric layer is made of vinyl chloride. Furthermore, it is preferable that the metal shielding core layer is connected to the shield wire of the antenna wire via a conducting wire and can be grounded.

  1A shows a core box 1 of the present invention, and FIG. 1B shows a composite outlet box 2 using the core box 1. The composite outlet box 2 is actually provided with openings of various shapes for drawing (or leading out) electric wires (cables) and for weight reduction, but these openings are not shown for simplicity.

  This composite outlet box 2 has an internal space with a partition unit or shielding plate 3 for an outlet unit arrangement area 4 for heavy current wires, and a jack for multimedia weak current wires such as a telephone line, Internet connection part, LAN connection part, etc. It is divided into unit arrangement areas 5.

  The core box 1 of the present invention has a rectangular shape having a bottom wall 6 and four side walls 7a, 7b, 7c, 7d that fit well in a socket arrangement area 4 for a high-current wire of a composite outlet box 2. To do.

  In the core box 1 according to the present invention, a frame body (not shown) for holding an outlet unit and a jack unit (not shown) is provided at a substantially central part of a pair of upper and lower side walls 7a and 7b facing each other. Vertically extending vertically from the bottom wall 6 to the upper edge of the side walls 7a, 7b so that a pair of upper and lower projections 8 with nuts provided on the composite outlet box 2 can be slid through to be screwed to the box 2 A recess 9 is provided.

  Furthermore, the core box 1 according to the present invention has a notch through which a wiring cable for a high-current electric wire connected to the outlet unit can pass on one side of the vertical recess 9 in the upper side wall 7a of the pair of upper and lower side walls. 10 is provided.

  Each of the bottom wall 6 and the side walls 7a to 7d constituting the core box 1 has a laminated structure in which at least both side surfaces of the metal shielding core layer are sandwiched between dielectric layers. The metal shielding core layer is preferably coated with a dielectric layer not only on the surfaces on both sides but also on the edges. Further, the metal shielding core layer is made of aluminum, and the dielectric layer is made of vinyl chloride. In addition, it is preferable that the metal shielding core layer is connected to the shield wire of the antenna wire through a conducting wire so as to be grounded.

  As shown in FIG. 1C, for example, an outlet unit 12 to which a two-port outlet 11 is fixed is attached to the top edge of the core box 1. At this time, a main body portion (not shown) below the two-port outlet 11 is accommodated in the core box 1, and the wiring cable 13 led out from the main body portion passes through the notch 10 of the core box 1. The core box 1 to which the outlet unit 12 is mounted in this way is arranged in the outlet arrangement area 4 for the high-current electric wire of the composite outlet box 2. At this time, the wiring cable 13 is inserted into the cable opening 14 provided in the composite outlet box 2.

  Next, a set screw (not shown) is screwed from the screw opening 15 of the outlet unit 12 to the projection 8 with a nut of the composite outlet box 2, and the outlet unit 12 and the core box 1 are fixed to the composite outlet box 2. . Thereafter, the aluminum foil film 16 having the adhesive surface shown in FIG. 1 (d) is preferably attached to the upper surface of the outlet unit 12 around the exposed surface of the two-port outlet 11.

  After fixing a jack unit (not shown) to the jack unit disposition area 5 for the weak current wire of the composite outlet box 2, a cover plate (not shown) is finally fixed to the composite outlet box 2.

  According to the core box 1 of the present invention, if the core box 1 is simply inserted into the outlet arrangement area 4 for the high current wire in the ordinary composite outlet box 2, only the side wall 7d of the core box 1 can be used. In addition, it is possible to reliably shield the weak current wires arranged in the jack unit disposition area 5 for the multimedia weak current wires adjacent to each other with the shielding plate 3 against the electromagnetic interference from the wrap around the strong current wires. it can. This work can be done easily even by an unqualified person.

  Furthermore, the core box 1 is interposed between the high current wire and the weak current wire at various places where the high current wire and the weak current wire are mixed, such as various ceilings and the back of the wall where the normal current cannot be seen. By storing and fixing the electric wires in the recesses 9 on both sides of the core box, the two can be reliably isolated. In this case, by connecting the two core boxes in cascade with the double-sided adhesive tape, both electric wires can be separated by about 20 cm, and the electrical equipment technical standard can be sufficiently cleared. The core box 1 can be fixed to an arbitrary part of the indoor structure by sticking it to a double-sided adhesive tape on the bottom surface of the core box 1 and peeling off the release sheet. This operation can be easily performed even by an unqualified person.

According to the present core box,
1． Article 18 (1) and (2) of the Wired Telecommunications Equipment Ordinance
2． Electricity Business Act Article 56 Paragraph 2 and Article 39 Paragraph 2
3． Ministry of Economy, Trade and Industry Ordinance 62, Article 189, Paragraphs 2 and 3,
Four. Any violation of Article 35 of the Building Lots and Buildings Transaction Business Act concerning the explanation of important matters of residential electrical equipment in the building lots and building transactions can be avoided.

  The inventive core box can be used in a composite outlet box used in the construction industry and the electrical equipment construction industry.

(A) is a diagrammatic perspective view of a core box according to the present invention, and (b) is a diagrammatic perspective view of an ordinary composite outlet box to which the core box of the present invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Core box 2 Composite outlet box 3 Bulkhead or shielding board 4 Outlet unit arrangement | positioning area for high current electric wires 5 Jack unit arrangement | positioning area for weak electric current electric wires 6 Bottom wall 7a-d Side wall 8 Protrusion with nut 9 Vertical depression 10 Cutting Notch 11 Two-outlet outlet 12 Outlet unit 13 Wiring cable 14 Cable opening 15 Screw opening 16 Aluminum foil film

Claims (4)

In the composite outlet box, the internal space is divided by a partition wall into an outlet unit installation area for high current wires and a jack unit installation area for weak current wires such as a telephone line, an Internet connection portion, and a LAN connection portion. A rectangular core box having a bottom wall and four side walls that fits well in an outlet arrangement area for a current wire,
In a substantially central part of the pair of upper and lower side walls facing each other of the core box, a pair of upper and lower pairs provided in the composite outlet box is provided to screw a frame body holding the outlet unit and the jack unit to the composite outlet box. Provide a vertical recess extending vertically from the bottom wall to the top edge of the side wall so that the nut-attached projection can slide through,
In one side of the vertical recess in one of the pair of upper and lower side walls, a cutout is provided through which a wiring cable for a high current wire connected to the outlet unit can pass.
The core box of the composite outlet box is characterized in that the bottom wall and the side wall of the core box have a laminated structure in which at least both surfaces of the metal shielding core layer are sandwiched between dielectric layers.   The core box of the composite outlet box according to claim 1, wherein the metal shielding core layer has a laminated structure in which not only the surfaces on both sides but also the edges are covered with a dielectric layer.   The core box of the composite outlet box according to claim 1 or 2, wherein the metal shielding core layer is made of aluminum and the dielectric layer is made of vinyl chloride. The core box of the composite outlet box according to any one of 1 to 3, wherein the metal shielding core layer is connected to a shield wire of an antenna wire through a conducting wire so as to be connected to ground.

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