JPH06165338A - Domestic wiring system - Google Patents

Abstract

PURPOSE:To easily cope with an increase in the number of branch circuits on a power supply line. CONSTITUTION:A trunk L0 line is branched into a plurality of truck lines on a distribution board A and each branch circuit L0 is branched in a join box B working as a branching device and freely wired in a free-access follower. Then a plug socket unit CU is fitted to the branched end of each branched trunk line L0 branched in the box B. The plug socket unit CU is integrally constituted of a circuit breaker BR2, a plurality of plug sockets C4 and C4 fed with electricity through the breaker BR2, and modular jack MJ for call and information. Therefore, when it becomes necessary to add a new branch circuit to this system, the circuit can be easily added by adding one plug socket unit and making wiring between the plug socket unit and branching device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a space between a floor surface of a building and a newly formed floor surface by forming a new floor surface on the floor surface of the building at appropriate intervals. The present invention relates to an indoor wiring system for performing indoor wiring.

[0002]

2. Description of the Related Art In an office building or the like, a new floor surface is formed on the floor surface of the building at appropriate intervals (hereinafter, referred to as
The floor newly formed in this way is called a free access floor), and wiring is performed inside the free access floor (that is, the space between the floor surface of the building and the floor surface of the free access floor). Many indoor wiring methods are being adopted.

In a conventional indoor wiring system of this type, as shown in FIG. 17, a branch circuit L _{1 formed} by a distribution board A is branched using a branch device (hereinafter referred to as a joint box) B, and an outlet C is provided. Power is supplied to ₁ and C ₂ . Here, the trunk line L ₀ of the wall surface a and the branch circuit L ₁ are wired through the piping e. Further, the cable for the branch circuit L ₁ is freely routed within the free access floor (b) using the plurality of joint boxes B. A VVF line is used as a cable for the branch circuit L ₁ .

Generally, a plurality of distribution boards A are provided on the wall a of each floor, etc., and each distribution board A has a plurality of trunk lines L ₀ (for example, four wires consisting of a single-phase three-wire system 200V and a ground wire). To the branch circuit L ₁ . Here, a main breaker BR ₀ (for example, for 100 A) is provided on the main line L ₀ ,
Each branch circuit L ₁ branch per breaker BR ₁ (e.g., 20
(For A) is provided. The branch circuit L ₁ is supplied with 100V or 200V of a single-phase two-wire system and has three wires including a ground wire.

The joint box B is a branch circuit L.₁To
Send it to the joint box B in the latter stage and wire it.
Branch circuit L₁Is further branched. And the above Joy
The connection of each cable to the front box B is a harness structure.
Easy by so-called harness connection using the connector of
I can do it. In the above indoor wiring system,
Outlet C inside the Lee Access Floor (b)₁Set up
Kuke or on the floor plate of the free access floor (b)
To outlet C ₂And these outlets C₁, C₂
To which the power plug of OA device D is connected via
G (for example, table tap) C₃Is supplied to.

[0006]

However, in the above-mentioned indoor wiring system, for example, when a branch circuit L ₁ is newly provided, wiring to the distribution board A is necessary, and therefore the distribution board A up to the distribution board A is required. It is necessary to raise the floor plate of the free access floor (b) to perform wiring, and when the distribution board A and the OA equipment D are separated, there is a problem that the work becomes difficult. For example, a new branch circuit L is provided at the position indicated by C in FIG.
_When the outlets C ₁ and C ₂ of ₁ are provided, it is necessary to remove the floor plate of the free access floor (b) indicated by the diagonal lines in the figure.

[0007] In the free access floor (b), the call / information system signal line L ₂ is also wired at the same time. In this case, as shown in FIG. 19, signal lines (for example,
Exposed modular connector M at the end pulled out from the floor of the free access floor (b) of twisted pair wire L _2.
C is provided, and the modular plug MP of the OA device (for example, an online terminal) D is connected to the modular connector MC. That is, since it is necessary to install the modular connector MC and the outlet C ₃ for the power supply and the call / information, respectively, there is a problem that the construction is troublesome.

The present invention has been made in view of the above points, and a first object thereof is to provide an indoor wiring system which can easily cope with the addition of a branch circuit of a power supply line. The second purpose is to
An object of the present invention is to provide an indoor wiring system that can easily cope with the case where an information line is added together with a branch circuit of a power supply line.

[0009]

According to the invention of claim 1, in order to achieve the first object, new floor surfaces are formed on the floor surface of the building at appropriate intervals, and the floor surface of the building is formed. Is an indoor wiring system that performs indoor wiring using the space between the newly formed floor surface and the newly formed floor surface. To
At least a breaker, which is freely wired between the floor surface of the building and a new floor surface using a plurality of branching devices, and is connected to the branching end of the branching device, and an outlet for receiving power via the breakers. It is equipped with an integrated outlet unit.

Further, according to the invention of claim 2, in order to achieve the second object, a call / call is made to the outlet unit.
A modular jack for information is provided integrally.

[0011]

According to the present invention, the branch trunk line branched from the trunk line by the distribution board as described above is pulled under the newly provided floor surface, and a plurality of branching devices are used to connect to the floor surface of the building and the new building. By providing an outlet unit that at least integrally includes a breaker that is freely wired to a floor surface and is connected to a branch end by the branching device, and an outlet that receives power via the breaker, When the branch circuit from the distribution board to the OA equipment is set after the breaker of the outlet unit and a new branch circuit is added, it is possible to add an outlet unit and wire between this outlet unit and the branch device. This makes it possible to add a branch circuit without requiring a large wiring work.

[0012] Further, as described in claim 2, by integrally providing a modular jack for telephone call / information on the outlet unit, a modular telephone is separately provided for addition of telephone call / information line which is performed together with addition of a branch circuit. It will be possible to support at the same time without installing an outlet.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. Also in the indoor wiring system of the present embodiment, as shown in FIG. 1, a distribution box A branches a plurality of trunk lines L _0, and each branch circuit L ₀ ′ serves as a joint box B as a branching device.
Branch at the branch circuit L in the free access floor (b).
₀ 'is freely wired. However, in the case of the present embodiment, the main breaker BR ₀ provided on the distribution board A is, for example, 20
The branch breakers BR ₁ are for 50 A, respectively. That is, the present embodiment is different in that the current capacity of the branch circuit L ₀ ′ by the distribution board A is made larger than in the conventional case, and this branch circuit L ₀ ′ is used almost in the same way as the main line. Therefore, the branch circuit L ₀ ′ is hereinafter referred to as a branch trunk line.

In this embodiment, the outlet unit CU is provided at the branch end of the branch trunk line L ₀ ′ branched at the joint box B. This outlet unit CU
Is a breaker BR ₂ for 20A and this breaker BR ₂
A plurality of outlets C ₄ , C ₄ 'powered via
It has a built-in modular jack MJ for calling and information. The outlets C ₄ and C ₄ ′ are provided on the front surface and the side surface, respectively, and the outlet C ₄ provided on the front surface has a plurality of connecting portions. In addition, each connection part has a ground terminal. Two modular jacks MJ are provided, one of which is a signal line L ₂ drawn from the floor surface of the free access floor (b).
, And the other is used for connecting the telephone and the OA device D.

As shown in FIG. 4, the outlet unit CU has a housing formed by a box-shaped box 10 having an open rear surface and a back cover 11 attached to the open rear surface of the box 10. On the front surface of the box 10, three large rectangular module openings 12 conforming to the JIS standard are formed. Three breakers BR ₂ , an outlet C ₄ , and a modular jack M are formed in each opening 12.
J is attached. An insertion hole 27 for fixing the outlet unit CU is formed in a corner portion of the box 10.

A general-purpose breaker BR ₂ is used, and the breaker BR ₂ is attached to the opening 12 by using a general-purpose mounting frame 13. In order to prevent the handle 15 of the breaker BR ₂ from being accidentally operated, a handle cover 14 that covers the handle 15 is attached to the mounting frame 13 so as to be openable and closable. The handle cover 14 is partially or entirely formed of transparent resin so that the breaker BR ₂ can be checked to be turned on and off.

The handle cover 14 is shown in FIG.
As shown in (a), it opens and closes in the vertical direction, but it opens and closes left and right as shown in (b) of the figure, and vertically and horizontally as shown in (c) and (d) of the figure. It may be a slide or the like. Outlet unit C
As the outlet C ₄ attached to the front surface of the U, a double outlet of 15 A, 125 V with a ground terminal is used. The outlet C ₄ is integrally formed with a mounting frame portion 16 corresponding to a mounting frame used when mounting a built-in, ready-made wiring device in the mounting box. The mounting frame portion 16 is partially cut away to make it smaller than a ready-made mounting frame.

The modular jack MJ is attached to the opening 12 by using a ready-made synthetic resin attachment frame 17. Here, since the modular jack MJ is formed to have a module size of a ready-to-use embedded wiring device, a blank chip 18 having a module size is inserted between the modular jacks MJ and between the modular jacks MJ. There is no gap in it. The modular jack MJ is attached to the attachment frame 17 by one-touch by the locking claw 19 as in the case of the ready-made embedded wiring device.

In FIG. 3 (a), each of the above breakers BR ₂ ,
The state where the outlet C ₄ and the modular jack MJ are attached is shown. The partition 10a and the insulating separator 2 are provided around the mounting portion of the modular jack MJ of the box 10.
3 is used to insulate the power supply unit. The insulating separator 23 is used so that the modular jack MJ can be easily attached.

The cable CA of the branch trunk line L ₀ 'is drawn into the outlet unit CU through the notches 21 and 22 formed on the side surface and the lower surface of the box 10 or at one corner of the back cover 11. Here, the notches 21 and 2
2 can change the pulling direction of the cable CA depending on the mounting method of the outlet unit CU.
It is formed so that it can be pulled out in three directions: lateral, dorsal and downward.

FIG. 11 shows a wiring method inside the outlet unit CU. The cable CA of the branch trunk line L ₀ 'that is connected to the screw-fastened input terminal of the breaker BR ₂
Is tensioned. That is, the cable CA is fixed to the box 10 using the tension stopper 20 so that even if the cable CA is pulled, no force is applied to the input terminal of the breaker BR ₂ . If the input terminal of the breaker BR ₂ is, for example, a quick-connecting terminal and the core of the cable CA is not a single wire but a stranded wire, the cable C
The rod-shaped crimp terminal 24 may be attached to the core wire portion A by the crimp cover 25 so that the connection can be made in a quick-connecting manner.

Attached to the side of the outlet unit CU
Outlet C_FourAs plug in the power plug
The retainer is attached by rotating the
It has a structure. This outlet C_FourIs stiffness
It is attached to the box 10 using the holding plate 26
Be done. Although detailed description is omitted, the breaker BR ₂
To the mounting frame 13, and each mounting frame 13, 17 and mounting
The frame 16 is attached to the box 10 and the pressing plate 26 is
Attachment to the box 10 is performed using a fixing screw.

Free access of the above outlet unit CU
As shown in Fig. 9, attach the set floor (b) to the floor.
Then, attach the fixing piece 30a of the L-shaped mounting plate 30 to the bolt 31 and
And nut 32 for floor board e on the free access floor (b)
Fix and attach the outlet unit CU to the mounting piece 30b.
It is done by attaching. In addition, the cable CA and the signal line L
₂Is a penetration through which the bushing 34 is fitted in the floor plate e.
Draw out on the floor through the hole 33 and connect to the outlet unit CU
Just connect with.

As shown in FIG. 10, the outlet unit CU is inserted through the insertion hole 27 of the outlet unit CU.
It is also possible to attach directly to the floor. further,
As shown in FIG. 11, the fixing piece 30a of the mounting plate 30 may be formed to pass under the floor, and the mounting plate 30 may be fixed to the floor surface of the building. Furthermore, as shown in FIG. 12 or FIG. 13, the attachment plate 30 may be fixed to the attachments 35 and 36 fixed to the floor surface. In the mounting tool 35 of FIG. 12, two leg pieces 35b are vertically provided from a square-shaped brim piece 35a, and a clipping piece 35c whose vertical position can be freely changed is attached to these leg portions 35b. 35
It is fixed by sandwiching the peripheral edge of the opening of the floorboard E with c. Further, in FIG. 13, a male screw portion 36a having a cylindrical shape and a flange at the upper portion and a female screw portion 36b having a cylindrical shape and having a flange at the lower portion are screwed together,
It is fixed by sandwiching the opening peripheral edge of the floorboard e with the collar portion. In the case of FIGS. 12 and 13, the fixtures 35 and 36 are provided with vertically penetrating portions so that the cable CA can be pulled out through the penetrating portion.

[0025] In this embodiment, since the outlet unit CU comprises a breaker BR _2, the circuit breaker BR ₂
The following is the 20A branch circuit L ₁ in FIG. Therefore, when newly setting the OA device D or the like, the outlet unit CU may be installed in the vicinity thereof and the wiring between the outlet unit CU and the joint box B may be performed. For example, when the outlet unit CU is installed at the position shown by C in FIG. 14, it is only necessary to remove the floor plate of the free access floor (b) indicated by the broken line in the figure to branch circuit L ₁
Can be added to facilitate wiring work.

If the wiring length between the joint box B and the outlet unit CU is within 3 m, VV
A cabtire cable can be used instead of the F line, and wiring work can be performed easily. Here, the cabtire cable does not legally satisfy the current capacity of the branch trunk line L ₀ ,
Since the breaker BR ₂ of the outlet unit CU is for 20A, only a current of up to 20A flows in this branch path, so that a cabtire cable can be used.

When a new outlet unit CU is installed at a position far from the joint box B, the cable for the branch trunk line L ₀ 'between the joint boxes B is cut and a new joint box B is provided, or a plurality of joint boxes B are provided. Branch line L via joint box B
By extending ₀ , it is possible to deal with the addition of a new branch circuit L ₁ . In addition, by connecting the outlet (strip) C ₃ to outlet C ₄ of the socket unit CU, it is possible to perform the floor wire freely by the user.

By the way, when a call / information line is added, a modular plug is provided at both ends between the collective modular outlet MC 'installed inside the free access floor (b) and the modular jack MJ of the outlet unit CU. It suffices to connect by using the signal line L ₂ attached to. In this way, since the outlet unit CU integrally includes the modular jack MJ, the modular outlet M
There is no need to install C separately.

However, using a modular jack MJ
If there is a telephone E other than the A device (for example, an offline terminal) D, the outlet unit CU cannot be used alone. Therefore, the indoor wiring system of this embodiment is provided with the additional outlet unit CU '. As shown in FIG. 2, this extension outlet unit CU ′ has an outlet C
₄ and the modular jack MJ are integrally built in, and are formed to have substantially the same appearance as the outlet unit CU as shown in FIG. The housing structure and the mounting structure of the outlet C ₄ and the modular jack MJ are the same as those of the outlet unit CU.

The outlet unit CU is provided on one side.
A power source plug P consisting of a blade 11 and a ground pin 12 connected to an outlet C ₄ ′ provided on the side surface of the power source is provided so as to project from the power source plug P to the outlet C ₄ . It is preferable to use the power plug P having a retaining structure. This extension outlet unit CU 'has a blade 11 and an earth pin 11
And connected to an electrical outlet C ₄ 'of the socket unit CU (to connect a so-called plug-in) that is, are arranged in parallel in the outlet unit CU. If the additional outlet units CU 'are installed side by side in this way, as shown in FIG.
The telephone set E can be connected in addition to the OA device D using the modular jack MJ.

Further, it is conceivable that another OA device D or telephone E may be installed on the next desk. Therefore,
In the indoor wiring system of the present embodiment, it is sufficient to use the extension outlet unit CU ″ provided with the power plug P ′ with the power cord shown in FIG.
If U "is further added to the additional outlet unit CU ', the OA device D and the telephone E installed on another desk can be connected.

By the way, in the above description, the outlet unit CU or the extension outlet unit C is used.
U'included the modular jack MJ, but in the case of supporting only the addition of the branch circuit, it is possible to use the one provided with the outlet C ₄ instead of the modular jack MJ as shown in FIG.

[0033]

As described above, according to the invention of claim 1, the branch main line branched from the main line by the distribution board is pulled under the newly provided floor surface, and a plurality of branching devices are used to construct the building. An outlet unit that at least integrally includes a breaker that is freely wired between the floor surface of the vehicle and a new floor surface and that is connected to a branch end of the branching device, and an outlet that receives power from the breaker. Therefore, when the branch circuit from the conventional distribution board to the OA equipment is set as a breaker of the outlet unit or later and a new branch circuit is added, the extension of the outlet unit and the connection between the outlet unit and the branch device are performed. This can be done by wiring, and a branch circuit can be added without requiring a large amount of wiring work.

According to the second aspect of the present invention, as described above, since the telephone jack / information modular jack is integrally provided in the outlet unit, a modular outlet or the like is separately installed for addition of telephone / information lines. Without having to deal with them at the same time.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an indoor wiring system according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an outlet unit and an additional outlet unit, which are the main configuration of the above.

3A to 3D are a front cross-sectional view, a side cross-sectional view, a plan cross-sectional view, and a plan cross-sectional view with a different fracture cross section showing a mounting structure of each configuration of an outlet unit.

FIG. 4 is an exploded perspective view of the above outlet unit.

FIG. 5 is an internal wiring diagram of the outlet unit.

FIG. 6 is a front sectional view showing a mounting structure of each component of the extension unit.

7A to 7C are a plan view, a side view and a bottom view showing a state in which a mounting frame is attached to a breaker.

8A to 8D are explanatory views showing various handle cover structures for breakers, respectively.

9 (a) and 9 (b) are a front view and a side view showing a construction state of the outlet unit.

FIG. 10 is a front view showing another state of construction of the outlet unit.

11 (a) and (b) are a front view and a side view showing still another working state of the outlet unit.

12 (a) and 12 (b) are a front view and a side view showing still another working state of the outlet unit.

13 (a) and 13 (b) are a front view and a side view showing still another working state of the outlet unit.

FIG. 14 is an explanatory diagram of a wiring work method when a branch circuit is added.

FIG. 15 is an explanatory diagram of an actual construction state.

FIG. 16 is a perspective view showing an outlet unit and an additional outlet unit that are adapted only for adding a branch circuit.

FIG. 17 is an explanatory diagram of a conventional indoor wiring system.

FIG. 18 is an explanatory diagram of the above problem.

FIG. 19 is an explanatory diagram of still another problem.

[Explanation of symbols]

A Distribution board L ₀ Main line L ₀ 'Branch main line B Joint box CU Outlet unit BR ₂ Breaker C ₄ Outlet MJ Modular jack Ro Free access floor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Osamu Yamada 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Ltd. (72) Inventor Osamu Kakuno 1-6, Uchiyuki-cho, Chiyoda-ku, Tokyo Nihon Telegraph Telephone Co., Ltd. (72) Hideo Nakagawa Hideo Nakagawa 1-1-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo Japan Telegraph and Telephone Corporation (72) Publicly-funded inventor 1-1-6 Uchisai-cho, Chiyoda-ku, Tokyo Nihonhon (72) Inventor Hirohito Ito 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Co., Ltd.

Claims (2)

[Claims] 1. Indoors in which a new floor surface is formed on the floor surface of the building at appropriate intervals, and wiring is performed using the space between the floor surface of the building and the newly formed floor surface. In the wiring system, the branch trunk line branched from the trunk line by the distribution board is pulled under the newly installed floor surface, and a plurality of branching devices are used to connect the building floor surface and the new floor surface. Freely wire between
An indoor wiring system comprising: a breaker connected to a branch end of the branching device; and an outlet unit at least integrally provided with an outlet for receiving power from the breaker. 2. The indoor wiring system according to claim 1, wherein said outlet unit is integrally provided with a modular jack for telephone calls and information.