JPH11164457A - Free-access floor wiring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a free access floor wiring system in which at least one of a trunk line and a branch line is housed in a wiring route. SOLUTION: A joint box connected to a trunk line has a branch connector with which the trunk line is branched. The branch connector has a plug 20, which is connected to one end of a branch line L1 and connected disconnectably to the branch connector for connecting the branch line to the trunk line electrically. A wiring appliance such as a tap is connected to the plug 20 via the branch line L1. The branch line L1 connected to the plug 20 is inserted into a flexible metal wiring conduit 41. The housing 21 of the plug 20 may be composed of a pair of half units 21a and 21b, and the end of the wiring conduit 41 is held by wiring conduit connection parts provided on the half units 21a and 21b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a trunk to a joint box arranged in an internal space of a free access floor, removably connecting a plug to a connector serving as a branch of the trunk, and connecting the connector via the connector and the plug. The present invention relates to a wiring system for a free access floor that branches a branch line.

[0002]

2. Description of the Related Art In recent years, a wiring system using a free access floor has become widespread with the increase of information devices used in offices. It is considered that a wiring system using a free access floor can easily cope with a layout change or the like because the wiring can be routed freely according to the layout in the office. However, when the position of the outlet is changed, the wiring route must also be changed, so if there are many outlets in the office and the wiring to the outlet is long, it is very difficult to change the wiring position. It is troublesome. In other words, although it is possible to cope with a change in the layout of the office, the construction work is troublesome. Therefore, in the past, wiring was often laid after the layout in the office was determined.

On the other hand, a joint box connected to a main line is installed at an appropriate density at the time of construction, and a wiring device having a plug detachably connected to a connector provided in the joint box is provided as required. It has been considered to construct a wiring system by connecting. In other words, in this wiring system, as shown in FIG. 32, a trunk line L0 is laid at the time of construction, and a joint box 30 is connected to the trunk line L0. 12 is connected to the joint box 3
0. With such a configuration, since the position up to the joint box 30 is fixed, prior wiring can be performed at the time of construction, and when the layout is changed, the relatively short branch line L1 connected to the wiring device and the joint box 30 are connected. It is easy to handle the wiring because only the connection relation with the wiring is changed. Plug 20 is connected to branch line L1.
Is provided, and the connection relationship can be easily changed by attaching and detaching the connector 32 and the plug 20 provided in the joint box 30.

[0004]

However, in the conventional wiring system, a floor 1 forming a free access floor and a floor member 3 supported above the floor 1 via support legs 2 are provided. The trunk line L0 and the branch line L1
Is laid as it is (so-called rolling wiring), and a mouse or the like may enter the internal space of the free access floor and damage the trunk line L0 or the branch line L1. In order to solve such a problem, it is conceivable to house the trunk line L0 and the branch line L1 in a wiring path formed of metal or the like. However, a wiring system for a free access floor using such a wiring path is still employed. It has not been.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a wiring system for a free access floor in which at least one of a trunk line and a branch line can be stored in a wiring path. Is to do.

[0006]

According to the first aspect of the present invention, there is provided a joint box having a branch connector connected to a main line and branching the main line in an internal space between a floor forming a free access floor and a floor material, A plug connected to one end of the branch line and detachably coupled to the branch connector to electrically connect the branch line to the trunk line, a wiring device provided at the other end of the branch line, and a wiring for housing at least one of the trunk line and the branch line And a connecting means for connecting the wiring path to at least one of the joint box and the plug. According to this configuration, coupling means for coupling the wiring path to at least one of the joint box and the plug is formed, and at least one of the main line and the branch line is housed in the wiring path. It will be protected by the wiring path.

According to a second aspect of the present invention, in the first aspect of the present invention, the plug includes a housing made of an insulating material holding a contact electrically connected to the branch connector, and the wiring path accommodates a branch line. A flexible conduit tube, wherein the housing is formed by coupling a pair of halves, and a conduit coupling portion that clamps one end of the conduit between the two halves. It is provided as a means. According to this configuration, the branch line is housed in the flexible conduit, and the conduit can be bent, so that the branch line can be freely routed to provide the wiring device at a desired position. . Moreover, since the housing of the plug is formed by a pair of halves and one end of the conduit is sandwiched between the two halves, the conduit can be connected to the plug at the time of factory shipment.

According to a third aspect of the present invention, in the first aspect of the present invention, the plug includes a housing made of an insulating material holding a contact electrically connected to the branch connector, and the wiring path accommodates a branch line. A flexible conduit tube, wherein the coupling means is provided on the housing and one end of the conduit tube is placed on the conduit tube placing portion, and the conduit conduit portion is placed between the conduit placing portion. It comprises a holding member for holding one end and an assembly screw for attaching the holding member to the housing. According to this configuration, the branch line is housed in the flexible conduit, and the conduit can be bent, so that the branch line can be freely routed to provide the wiring device at a desired position. . Moreover, since one end of the conduit is sandwiched between the conduit mounting portion provided on the plug housing and the pressing member fixed to the electric wire mounting portion using an assembling screw, the electric wire is placed at the site of wiring construction. A tube can be connected to the plug. That is, it is easy to adjust the length of the conduit at the construction site.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the plug includes a housing made of an insulating material holding a contact electrically connected to the branch connector, and the wiring path accommodates a branch line. A flexible conduit tube, wherein the coupling means comprises a coupling adapter for holding a part of the housing and one end of the conduit tube in an inserted manner. According to this configuration, the branch line is housed in the flexible conduit, and the conduit can be bent, so that the branch line can be freely routed to provide the wiring device at a desired position. . Moreover, since the plug and the conduit are coupled via the coupling adapter, it is possible to couple the conduit to a ready-made plug.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, the coupling adapter comprises a pair of half members for holding a part of the housing and one end of the conduit tube. According to this configuration, since the coupling adapter is formed by the two half members, the number of parts constituting the coupling adapter is small, and the coupling adapter can be provided at low cost.

According to a sixth aspect of the present invention, in the invention of the fourth aspect, the coupling adapter is provided between a base on which a part of the housing and one end of the conduit tube are placed, and a base. A first holding member for holding a part of the housing, a second holding member for holding one end of the conduit between the base and a base,
Mounting screws for attaching the first and second holding members to the base. According to this configuration, the plug and the conduit can be fixed to the base by the first and second pressing members respectively corresponding thereto, so that the coupling work between the coupling adapter, the plug, and the conduit becomes easy. .

According to a seventh aspect of the present invention, in the second aspect of the present invention, the wiring device is a tap having a blade insertion port, and the tap connects two members of a body and a cover. And a conduit tube holding portion for holding the other end of the conduit between the body and the cover. According to this configuration, since the conduit is connected to the tap as the wiring device, the branch line can be covered with the conduit over the entire length between the plug and the tap.

According to an eighth aspect of the present invention, in the second aspect of the invention, there is provided an outlet box in which the wiring device is embedded in an internal space so as to open to a flooring surface,
A floor outlet comprising a plug blade insertion port and an outlet block arranged in an outlet box, wherein the floor outlet is fixed to a through hole provided in a peripheral wall of the outlet box, holds the other end of the conduit, and has a Is provided with a bushing for a box which passes the branch line of the above to the peripheral wall of the outlet box. According to this configuration, since the conduit is connected to the outlet box constituting the floor outlet as a wiring device, the branch line can be covered with the conduit over the entire length between the plug and the outlet box. In addition, although the branch line is not covered with the conduit tube in a portion from the peripheral wall of the outlet box to the outlet block, the branch line can be protected since this portion is housed inside the outlet box.

According to a ninth aspect of the present invention, in the first aspect of the present invention, there is provided a conduit tube including a wiring path mounting frame fixed to the joint box, wherein the wiring path stores a trunk line.
A mounting frame bushing, which is fixed to a fixing hole provided in a connecting piece erected on the wiring path mounting frame and holds one end of the conduit and passes a trunk line in the conduit to the connecting piece, is provided as the coupling means. It is a thing. According to this configuration, since the conduit for accommodating the trunk is provided by attaching the mounting frame bushing to the wiring path mounting frame to which the joint box is attached, most of the trunk connected to the joint box is connected by the conduit. Can be covered. Furthermore, in this configuration, since the wiring path mounting frame functions as an adapter for connecting the conduit to the joint box, the existing joint box can be diverted despite the use of the conduit.

According to a tenth aspect of the present invention, in the ninth aspect of the present invention, a terminal cover for forming a wiring box is provided together with the wiring path mounting frame, and a trunk is connected to a terminal portion of the joint box in the wiring box. Since the wiring box is formed by the wiring path mounting frame and the terminal cover, and the main line is connected to the terminal part of the joint box in the wiring box, the main line is connected between the mounting frame bushing and the terminal part. It is possible to protect the trunk line by covering with.

According to an eleventh aspect, in the tenth aspect, the conduit has flexibility. According to this configuration, since the conduit for storing the main line has flexibility, the degree of freedom in laying the main line is relatively high, and even if there is an obstacle or the like in the place where the main line is laid, it can be bypassed. Becomes possible. According to a twelfth aspect, in the tenth aspect, the conduit tube has rigidity. According to this configuration, the relative position between the joint boxes is substantially determined by the conduit, so that the alignment of the joint boxes is facilitated. Further, it can be provided at a lower cost as compared with a generally flexible conduit tube.

According to a thirteenth aspect of the present invention, in accordance with the first aspect of the present invention, there is provided a wiring tray having a cross-sectional shape in which an upper surface is opened and tongues are extended on both sides from the opening edge. The joint box is mounted on a fixed base arranged in a straddling manner. According to this configuration, since the joint box is attached to the fixed base mounted on the wiring tray, the trunk can be housed in the wiring tray for wiring. In other words, the trunk line is not mixed with the branch line, and the wiring is easy to understand. Even in this configuration, the wiring tray has a function of protecting the trunk line. Furthermore, in this configuration, since the fixing base functions as an adapter for connecting the wiring tray to the joint box, a ready-made joint box can be used despite the use of the wiring tray.

According to a fourteenth aspect of the present invention, in the thirteenth aspect of the present invention, a through hole for inserting a trunk line connected to a terminal portion of the joint box is formed in the fixed base, and an opening surface of a portion of the wiring tray excluding the fixed base is provided. Is provided with a cover plate for covering the cover. According to this configuration, since the opening surface of the wiring tray is covered with the cover plate, and the trunk line is introduced into the wiring tray through the through hole provided in the fixed base, the function of protecting the trunk line is further enhanced.

According to a fifteenth aspect, in the fourteenth aspect, a terminal cover fixed to the fixing base and covering the terminal portion and the through hole of the joint box is provided. According to this configuration, since the terminal cover is provided, the exposed portion of the trunk from the fixing base to the terminal portion is covered by the terminal cover, and the function of protecting the trunk is further enhanced.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The basic configuration of a wiring system according to the present embodiment is substantially the same as the conventional configuration shown in FIG. 32, and is connected to a wiring device such as an outlet via a branch line L1. It comprises a plug 20 and a joint box 30 having a connector 31 connected to the main line L0 and to which the plug 20 is detachably connected (see FIG. 32).

However, at least one of the trunk line L0 and the branch line L1 is accommodated in the wiring path. A flexible conduit tube 41 is used for the branch line L1 in the wiring path, and a flexible conduit 41 is used for the trunk line L0. Conduit 42a having rigidity, conduit 4 having rigidity
2b, one of the wiring trays 43 whose upper surface is open is used for the wiring path. The conduits 41, 42a, 42b and the wiring tray 43 are all made of metal (FIG. 29,
See FIG. 31).

First, the plug 20 will be described. As shown in FIG. 1, the plug 20 includes a housing 21 formed of a thermosetting synthetic resin having excellent tracking resistance. The housing 21 is formed by connecting a pair of half bodies 21 a and 21 b divided in the thickness direction by caulking studs 22. An opening window 23 is formed on one end surface in the longitudinal direction of the housing 21, and three plug blades (contacts) 24 are arranged in the housing 21 so as to face the opening window 23. A partition 25 is formed inside the housing 21 to partition between adjacent blades 24. Further, a stopper piece 24a orthogonal to the insertion / removal direction is protruded from each plug blade 24, and the stopper piece 24a is locked by a rib 21c protruding from the inner surface of the half body 21a, and the plug blade 24 is fixed. You. A crimping portion 24b formed in a tubular shape is formed in a part of the blade 24, and the crimping portion 24b
The core wire 52 can be coupled to the plug blade 24 by inserting the core wire 52 of the insulated wire 51 of the branch line L1 and then crimping it. Here, the branch line L1 is obtained by wrapping three insulated wires 51 with a synthetic resin insulating sheath 50, and the core wire 52 of each insulated wire 51 is connected to each plug blade 24.
Connected to each other.

An electric wire coupling portion 26 is formed at an end of the housing 21 opposite to the opening 23 in the longitudinal direction. A partition 21d is projected from the inner peripheral surface of the housing 21 between the plug blade 24 and the conduit connection portion 26, and the partition 21d is opened to the extent that the insulating sheath 50 can be inserted.
The conduit joint 26 is open in a circular cross section, and the inner diameter of the conduit joint 26 is set to be equal to or slightly smaller than the outer diameter of the conduit 41. Therefore, when the conduit 41 is inserted into the conduit coupling portion 26, the end face of the conduit 41 is
By abutting on 1d, the relative position of the conduit tube 41 with respect to the housing 21 is regulated. In addition, the conduit 41
Is sandwiched between the two halves 21a and 21b and the housing 2
1

The plug 20 is a so-called harness plug having a lock body (not shown), and has a structure in which the plug 20 is locked so as not to come off from the connector 31 when connected to the connector 31 of the joint box 30 (see FIG. 11). Has become. A lock release lever 27 is disposed on the outer surface of one half body 21 b of the housing 21. When the lock release lever 27 is operated, the locked state of the lock body is released, and the plug 20 can be pulled out from the connector 31. It is like that.

In this case, since the plug 20 shown in FIG. 1 connects the half bodies 21a and 21b using the caulking studs 22, the branch line L1 is not connected at the construction site, and It is shipped in a state where it is connected to the plug 20 in advance at the factory. A tap 11 as a wiring device is connected to the other end of the branch line L1 having one end connected to the plug 20 as shown in FIGS. 2 and 3, or a wiring as shown in FIGS. A floor outlet 12 as an appliance is connected. Tap 1 shown
1 is provided with four sets of blade insertion holes 13 and is shown in FIG.
In FIG. 3, each blade insertion port 13 is formed in a shape that allows both a flat blade and a round bar-shaped blade to be inserted. In the example shown in FIG. In addition to the above, a plug blade insertion port 13a for grounding is provided. In addition, a switch 14 is provided which collectively turns on and off the connection between the plug blade insertion port 13 and the branch line L1. The tap 11 is formed by connecting two members, a body accommodating a blade receiving spring (not shown) and a cover provided with a blade insertion port 13.
1 is provided with a wire holding portion (not shown) for holding the end portion between the body and the cover. The configuration of the electric wire holding portion is the same as the configuration of the electric conduit coupling portion 26 of the plug 20, and the electric conduit 41 is sandwiched between the body and the cover by coupling the body and the cover. A bushing 44 for a panel as shown in FIG. 4 is mounted on the outer peripheral surface of the conduit 41, and the bushing 44 for the panel is positioned in a notch 3 a provided so that the conduit 41 is inserted into the flooring 3. The conduit 41 is positioned with respect to the floor panel and is protected from being damaged by the floor panel.

On the other hand, the floor outlet 12 has a metal outlet box 15 opened on the surface of the floor panel, and a door plate 17 is provided on the opening surface of the outlet box 15. An outlet block 16 having a blade insertion port is housed in the outlet box 15, and the outlet block 1 is opened with the door plate 17 opened.
When the flat blade provided on the plug is inserted into the plug 6, the plug is stored in the outlet box 15. That is, with the plug connected to the outlet block 16, the door plate 17 is closed, and the electric wire connected to the plug can be drawn out from the gap formed between the outlet box 15 and the door plate 17. Have been. In the peripheral wall of the outlet box 15, there is a through hole 1
5a is formed, and a conduit 41 can be coupled to the through hole 15a via the bushing 18 for a box. The box bushing 18 is formed in a cylindrical shape, is fixed to the outlet box 15 by a nut (not shown) screwed into a thread (not shown) formed on the outer peripheral surface of one end, and has a conduit 41 in the other end. Is inserted into the conduit 4
1. Therefore, by using the box bushing 18, it is possible to connect the branch line L <b> 1 to the through hole 15 a and
1 is fixed.

The above-mentioned plug 20 holds the conduit 41 by connecting a pair of half bodies 21a and 21b with a caulking stud 22, and the plug 20 and the conduit 41 are connected together. It must be done at the factory. On the other hand, when it is necessary to connect the plug 20 and the conduit 41 at the construction site, the plug 2 having the configuration shown in FIG.
0 is used. The housing 21 of the plug 20 includes a plug body 21f and a plug cover 21g which is covered by a part of the plug body 21f and accommodates the plug blade 24 between the plug body 21f. The plug body 21f and the plug cover 21g And are connected using an assembly screw 22a.
A pressing member 29 is covered on the conduit tube mounting portion 21h, which is the remaining portion of the plug body 21f, and the plug body 21f and the pressing member 29 are connected by an assembly screw 22b. Further, the plug 20 shown in FIG.
Is provided with a terminal screw 61, and the blade 24 and the branch line L <b> 1 are connected via a crimp terminal 62. That is, the core wire 52 of the branch line L1 is connected to the crimp terminal 62, and the crimp terminal 62 is connected to the plug blade 24 by the terminal screw 61. It is desirable to use a round type crimp terminal 62 having a round hole formed at the tip.

The plug 20 shown in FIG. 7 has a conduit mounting portion 21h in which a conduit 41 is provided on a plug body 21f.
The partitioning piece 21d for holding the end of the conduit tube 41 is provided on the plug body 21f and the plug cover 21g. As described above, the plug 20 shown in FIG. 7 connects the plug cover 21g and the holding member 29 to the plug body 21f using the assembling screws 22a and 22b, and the terminal screw 61 to the plug blade 24. Branch line L using
1 is connected, the branch line L1 can be connected to the plug 20 and the conduit 41 can be connected to the plug 20 at the construction site. Other configurations are the same as those of the plug 20 shown in FIG.

Each of the above-mentioned plugs 20 has a dedicated structure for connecting the electric conduit 41, as shown in FIG.
As described above, the plug 20 conventionally provided is diverted, the coupling adapter 70 is provided, and the plug 20 and the conduit tube 41 are provided.
May be connected. The coupling adapter 70 is formed by coupling a pair of half members 71a and 71b with a caulking stud 72, and a part of the plug 20 and a part of the conduit 41 are inserted into the coupling adapter 70, respectively. Half member 7
1a and 71b. Here, in the housing 21 of the plug 20, a portion to be inserted into the coupling adapter 70 is formed with irregularities. The plug 20 is prevented from dropping out of the plug 70. In addition, a partition rib 73 is protruded inside the coupling adapter 70, and is separated by the partition rib 73 so that the plug 20 and the conduit tube 41 do not directly contact each other. In the case of this configuration, since the coupling adapter 70 is assembled using the caulking studs 72, the coupling between the plug 20 and the conduit 41 is performed at the factory, and therefore, the connection structure between the plug 20 and the branch line L1. As in the case of the plug 20 shown in FIG. 1, a structure in which the core wire 52 is connected to the crimping portion 24b provided on the blade 24 may be adopted. Such a plug is disclosed, for example, in Japanese Patent Application No. 3-56814.

As the coupling adapter 70, one having the configuration shown in FIG. 9 may be used. The coupling adapter 70 is provided on the base 7 on which a part of the plug 20 and a part of the conduit tube 41 are placed.
4 and a first for holding the plug 20 with the base 74.
And a second pressing member 76 for holding the conduit tube 41 between the base 74 and the base 74 are provided separately, and the base 74 and the first and second pressing members 75 and 76 are attached. It has a configuration connected by screws 77. In short, the plug 20 and the conduit tube 41 can be separately connected to the base 74. FIG. 1 shows a plug 20 used here.
As shown in FIG. 0, a type in which the branch line L1 is connected to the plug blade 24 using the terminal screw 61 may be used. This type of plug 20 is disclosed, for example, in Japanese Patent Application No. 9-106493. The housing 21 of the plug 20 is formed by connecting a body 21i and a cover 21j with assembly screws 22c.

To configure the wiring system, the joint box 30 is required as described above. The joint box 30 includes a branch that branches the main line L0 into two branches and a branch that branches into four branches. FIG. 11 shows the joint box 30 that branches into four branches. The joint box 30 includes a rectangular parallelepiped body 31, and terminal portions 32 for connecting the trunk line L <b> 0 are provided at central portions of both longitudinal sides of the body 31. Further, connectors 33 for detachably connecting the above-described plug 20 are provided at both ends of both sides in the longitudinal direction of the body 31. Both terminals 3
The conductive portions of the respective poles forming the second terminal 2 are commonly connected in the body 31, and the main line L 0 connected to one terminal portion 32 and the main line L 0 connected to the other terminal portion 32 are connected via the joint box 30. To be electrically connected. That is, the main line L0 can be sent and wired. Each connector 33 is branched from the terminal portion 32 inside the body 31. Here, the terminal portion 32
Is provided with a so-called quick-connecting terminal that holds the electric wire by the spring force of a leaf spring, and if the electric wire is inserted into the electric wire insertion port provided in the terminal portion 32, the electric wire is locked by the spring force of the leaf spring and is prevented from coming off. And an electrical connection is made.

A mounting hole 35 through which a mounting screw 34 is inserted is formed in the body 31 of the joint box 30. When the main line L0 is housed in the flexible conduit 42a or the rigid conduit 42b, the wiring path mounting frame 80 is attached to the joint box 30 as shown in FIG. The wiring path mounting frame 80 includes a base piece 81 that is coupled to the body 31 of the joint box 30 using the mounting screws 34.
And connecting pieces 82 erected at both ends of the base piece 81 and opposed to the respective terminal portions 32 to form a substantially U-shape. A receiving piece 83 extends from the leading edge of the connecting piece 82. The wiring path mounting frame 80 is formed to be wider left and right than the terminal portion 32. A fixing hole 84 is formed in each connecting piece 82, and as shown in FIG. 13, the conduits 42a and 42b can be connected using the fixing hole 84.

That is, the mounting frame bushing 85 is attached to the fixing hole 84, and the conduit 4 is attached to the mounting frame bushing 85.
2a, 42b (in the illustrated example, a flexible conduit tube 42a
Since the mounting frame bushing 85 has the same configuration as the box bushing 18 described above, the trunk line L0 housed in the conduit tube 42a is connected to the connection piece 82. The wires can be connected and the conduit 42 a can be connected to the wiring path mounting frame 80.

As shown in FIG. 14, a terminal cover 86 can be covered on the wiring path mounting frame 80, and a wiring box 87 is formed by the wiring path mounting frame 80 and the terminal cover 86. Here, the terminal cover 86 is fixed to the wiring path mounting frame 80 by a mounting screw 88 screwed into the receiving piece 83. The wiring box 87 covers the terminal portion 32 and
This protects the trunk line L0 drawn from a from being exposed to the outside. By providing such a wiring box 87, it is possible to prevent dust from adhering to a connection portion of the trunk line L0 to the terminal portion 32, and to reliably avoid an accident due to tracking. Further, since the trunk line L0 is housed in the wiring box 87 at the connection portion with the joint box 30, the plug 20 can be connected to the joint box 30.
This prevents accidental pulling of the trunk line L0 when the connector 33 is inserted into or removed from the connector 33. Moreover, as shown in FIG.
If there is no need to connect a part of the insulated wire 55 serving as the trunk line L0 to the joint box 30, the wiring box 8
It is possible to route the insulated wire 55 without connecting it to the joint box 30 within 7. That is, a gap is formed between the joint box 30 and the wiring box 87 so that the insulated wire 55 can pass therethrough.

As shown in FIG. 16, when the wiring box 87 is used, the joint box 30 is directly mounted on the floor 1. In addition, when the flexible electric conduit 42a is used as described above, the joint box 30 can be arranged at any position as shown in FIG. 17, and when the rigid electric conduit 42b is used. 18, the joint box 30 can be arranged on a straight line along the conduit 42b. That is, when the rigid conduit 42b is used, the relative positional relationship between the adjacent joint boxes 30 can be restricted.

When the trunk line L0 is constructed, the conduits 42a and 42b may be used as described above, or a wiring tray 43 as shown in FIG. 19 may be used. Wiring tray 43
Is formed in a substantially U-shaped cross section with an open upper surface, and is formed in a shape in which a tongue piece 43a extends outward from both opening edges. When using the wiring tray 43, as shown in FIG. 20, the fixing base 90 is attached to the wiring tray 43 so as to straddle both tongue pieces 43a. The fixing base 90 is a plate-shaped member, and extends in the longitudinal direction of the wiring tray 43.
Are fixed to the wiring tray 43 by using fixing screws 91 inserted into fixing holes 43b formed at regular intervals in the tongue pieces 43a. Further, a fixing screw hole 90a is formed in the fixing table 90, and as shown in FIG. 21, the mounting box 92 inserted into the joint box 30 is screwed into the fixing screw hole 90a, so that the joint box 30 is fixed to the fixing table 90. Fixed to

As described above, when the joint box 30 is arranged on the fixed base 90 attached to the wiring tray 43,
The joint box 30 is fixed to the wiring tray 43 so as to protrude from the opening surface of the wiring tray 43.
Accordingly, when the wiring tray 43 is placed on the floor 1 as shown in FIG.
(The wiring tray 43 is placed on the floor 1
To be placed). When the wiring tray 43 is used, the trunk line L0 is stored in the wiring tray 43 as shown in FIG. When the wiring box 43 is used for the construction, the relative positional relationship between the joint boxes 30 can be regulated by the wiring tray 43.
In addition, since the trunk line L0 is stored in the wiring tray 43, separation from the branch line L1 is facilitated.

When the wiring tray 43 is used, the opening surface of the wiring tray 43 may be opened as described above. However, in order to more reliably separate the trunk line L0 and the branch line L1, the opening surface of the wiring tray 43 is used. 26 (FIG. 26)
Reference). In this configuration, as shown in FIG. 24, a fixing base 90 provided with a through hole 94 through which the trunk line L0 can be inserted is used. The through-hole 94 is provided with a bushing (not shown) for protecting the trunk line L0. By using the fixing base 90 having such a shape, the trunk L0 can be connected to the wiring tray 43 through the through hole 94.
Can be stored. Therefore, the wiring tray 43
It is possible to cover with a lid 93 as shown in FIG.
Here, it is desirable to cover the terminal portion 32 of the joint box 30 with a terminal cover 95 in order to reliably prevent tracking. The terminal cover 95 is arranged so as to straddle both the through holes 94 provided in the fixing base 90, covers the terminal part 32 of the joint box 30, and is fixed to the fixing base 90 using fixing screws 96. Thus, the cover plate 93
By using the terminal cover 95 and the trunk line L0, the trunk line L0 is stored in the wiring tray 43 without being exposed to the outside. In this state, as shown in FIG.
0 may be connected. The trunk line L0 is connected to the wiring tray 43.
And is not exposed to the outside, it is easy to separate from the branch line L1.

FIGS. 26 and 27 show an example in which the terminal cover 95 is connected to the fixing base 90 and a part of the joint box 30 is exposed. As shown in FIG. 28, a junction for accommodating the joint box 30 is provided. Box 1
00 may be used. The junction box 100 is a box housing the joint box 30, and has a fixed base 101 that is open at the top and is fixed to be mounted on the tongue 43 a of the wiring tray 43, and is covered with the top of the fixed base 101. And a terminal cover 102. Fixed base 1
01 and the terminal cover 102 are connected by screws (not shown). The lower portion of the fixed base 101 is accommodated in the wiring tray 43, and is fixed to the wiring tray 43 in a state where the mounting pieces 103 projecting from both sides of the fixed base 101 are mounted on the tongue piece 43a. On the side wall of the fixed base 101 different from the surface on which the mounting piece 103 is projected, through holes 104 are provided respectively.
a and a drawing hole 104b are formed. Through hole 104
“a” is located below the protruding position of the mounting piece 103 on the side wall of the fixed base 101, and the upper edge of the drawing hole 104b is open.

Thus, the insulated wire 55 serving as the trunk line L0 is inserted into the through hole 104a, and the trunk line L0 can be stored in the wiring tray 43 regardless of whether or not the cover plate 93 is provided on the wiring tray 43. it can. On the other hand, the extraction hole 104
b is formed so that the conduit 41 through the branch line L1 can be inserted. The plug 20 is connected to the connector 33 with the terminal cover 102 opened, and after the conduit 41 is passed through the extraction hole 104b, the terminal By closing the cover 102, the connection portion to the joint box 30 can be stored in the junction box 100.

FIG. 29 shows an example in which the trunk line L0 is housed in the wiring tray 43 and constructed using the junction box 100. In the illustrated example, the trunk line L0 is wired from the distribution board 110 through the wiring tray 43, and a junction box 100 containing a joint box 30 (not shown) is provided at an appropriate position of the wiring tray 43 to branch the trunk line L0. The branch line L1 branched by the joint box 30 is passed through a conduit 41 and is connected to the tap 11 or the floor outlet 12.
In the example shown in FIG. 29, the wiring of the information system used for telephone and communication is also performed, and the information panel 111 is used by using the same wiring tray 112 as the wiring tray 43 storing the main line L0.
And an information trunk line L2, and an information branch line L3 is branched using a joint box 113 for information. In the illustrated example, a modular jack 114 for PDS is connected to the information branch line L3.
Is connected.

FIG. 30 shows an example in which the wiring tray 43 is not used. That is, the trunk line L0 is passed through the conduits 42a and 42b (the illustrated example shows the rigid conduit 42b), and the joint box 30 is housed in the junction box 100 having the configuration shown in FIG. The junction box 100 is installed on the floor 1, and the fixed base 101 is provided with legs 105 mounted on the floor 1. In addition, a knockout portion 104 formed in a thin shape that can be cut away instead of the through hole 104a.
c is provided. Knockout portion 104c is cut out to form a through hole that can hold a bushing (not shown) that holds conduits 42a and 42b. The bushing used here has the same configuration as the box bushing 18 used for the floor outlet 12. The construction example shown in FIG. 32 is the same as the construction example shown in FIG. 29 except that the trunk line L0 is passed through the conduit 42b and the shape of the junction box 100 is different.

[0043]

According to the first aspect of the present invention, there is provided a joint box having a branch connector which is connected to a main line and branches the main line in an internal space between a floor forming a free access floor and a floor material, and one end of a branch line. A plug that is connected and detachably coupled to the branch connector and electrically connects the branch line to the trunk line; a wiring device provided at the other end of the branch line; and a wiring path that houses at least one of the trunk line and the branch line. In at least one of the joint box and the plug, coupling means for coupling the wiring path is formed. At least one of the joint box and the plug is formed with coupling means for coupling the wiring path, and the wiring path is formed. Since at least one of the trunk line and the branch line is housed, there is an advantage that at least one of the trunk line and the branch line is protected by the wiring path.

According to a second aspect of the present invention, the plug includes a housing made of an insulating material holding a contact to be electrically connected to the branch connector, and the wiring path has flexibility to accommodate a branch line. Wherein the housing is formed by coupling a pair of halves, and the conduit includes a conduit coupling portion sandwiching one end of the conduit between the two halves as coupling means. Since the branch line is housed in the flexible conduit, there is an advantage that the branch can be freely routed since the conduit can be bent, and the wiring device can be provided at a desired position. Moreover,
Since the housing of the plug is formed by a pair of halves and one end of the conduit is sandwiched between the halves, there is an advantage that the conduit can be connected to the plug at the time of factory shipment.

According to a third aspect of the present invention, the plug includes a housing made of an insulating material holding a contact to be electrically connected to the branch connector, and the wiring path has flexibility to accommodate a branch line. Wherein the coupling means is provided in the housing and one end of the conduit is sandwiched between the conduit placement part on which one end of the conduit is placed and the conduit placement part. In the case of the holding member and the assembly screw for attaching the holding member to the housing, the branch line is housed in the flexible conduit, and the branch line can be bent because the conduit can be bent. The wiring device can be provided at a desired position by freely routing, and furthermore, the electric wire is provided between the conduit tube mounting portion provided in the plug housing and a holding member fixed to the electric wire mounting portion by using an assembling screw. Because it clamps one end of the tube There is an advantage that the conduit can be coupled to the plug in the field of wire construction.

According to a fourth aspect of the present invention, the plug includes a housing made of an insulating material holding a contact electrically connected to the branch connector, and the wiring path has a flexibility for accommodating a branch line. Wherein the coupling means comprises a coupling adapter which holds a part of the housing and one end of the conduit in an inserted form, wherein the branch is housed in a flexible conduit. Since the conduit can be bent, there is an advantage that the branch line can be freely routed and the wiring device can be provided at a desired position.Moreover, the plug and the conduit are connected via the coupling adapter. The coupling has the advantage that the conduit can be coupled to a ready-made plug.

According to a fifth aspect of the present invention, when the coupling adapter comprises a pair of half members for holding a part of the housing and one end of the electric conduit, the coupling adapter is formed by two half members. Since the coupling adapter is configured, there is an advantage that the number of components configuring the coupling adapter is small and the coupling adapter can be provided at low cost. As in the invention of claim 6, the coupling adapter has a base on which a part of the housing and one end of the conduit tube are placed, and a part of the housing sandwiched between the base. A first holding member, a second holding member for holding one end of the conduit between the base and the base,
In the case where the plug and the conduit are respectively composed of mounting screws for attaching the first and second holding members to the base, it is possible to fix the plug and the conduit to the base with the corresponding first and second holding members. Since it is possible, there is an advantage that the work of connecting the connection adapter to the plug and the conduit is easy.

According to a seventh aspect of the present invention, the wiring device is a tap having a blade insertion port, and the tap is formed by connecting two members, a body and a cover.
In the case where the conduit is provided with a conduit holding portion that clamps the other end of the conduit between the body and the cover, the conduit is connected to the tap, which is a wiring device, so that the conduit extends over the entire length between the plug and the tap. Therefore, there is an advantage that the branch line can be covered with the conduit.

According to the invention of claim 8, the wiring device is provided with an outlet box embedded in the internal space so as to be open to the floor material surface, and a plug blade insertion port, and is arranged in the outlet box. A floor outlet that is fixed to a through hole provided in the peripheral wall of the outlet box, holds the other end of the conduit, and passes a branch line in the conduit to the peripheral wall of the outlet box. With the bushing, the conduit is connected to the outlet box constituting the floor outlet, which is a wiring device, so that the branch line can be covered with the conduit over the entire length between the plug and the outlet box. Although the branch line is not covered by the conduit from the peripheral wall of the outlet box to the outlet block, this part is not From being housed inside the boxes, there is the advantage that it is possible to protect the branch line.

According to a ninth aspect of the present invention, there is provided a conduit for accommodating a wiring path fixed to the joint box, wherein the wiring path is a conduit for accommodating a trunk line, and a connection standing on the wiring path mounting frame. In the case where a bushing for an attachment frame which is fixed to a fixing hole provided in a piece and holds one end of the conduit and passes a main line in the conduit to the connecting piece is provided as the coupling means, a wiring with a joint box attached thereto. Since the conduit for housing the main line is provided by attaching the bushing for the mounting frame to the road mounting frame, most of the main line connected to the joint box can be covered by the conduit.
In this configuration, since the wiring path mounting frame functions as an adapter for coupling the conduit to the joint box, there is an advantage that the existing joint box can be diverted despite the use of the conduit.

According to the tenth aspect of the present invention, a terminal cover for forming a wiring box together with a wiring path mounting frame is provided, and a trunk line is connected to a terminal portion of a joint box in the wiring box. Since the wiring box is formed by the cover and the trunk line is connected to the terminal part of the joint box in the wiring box, the trunk line is covered with the wiring box between the mounting frame bushing and the terminal part. There is an advantage that the trunk line can be protected.

According to the eleventh aspect of the present invention, in the case where the conduit has flexibility, the conduit for accommodating the trunk has flexibility, so that the degree of freedom in laying the trunk is relatively high. This has the advantage that it is possible to make a detour even if there are obstacles or the like in the place where the trunk line is laid. In the twelfth aspect of the present invention, when the conduit has rigidity, the relative position between the joint boxes is substantially determined by the conduit, so that the alignment of the joint box is facilitated and the flexible box is usually flexible. There is an advantage that it can be provided at a low cost as compared with a conduit having the above.

According to a thirteenth aspect of the present invention, there is provided a wiring tray having a cross-sectional shape in which the upper surface is open and tongues are extended on both sides from the opening edge, and the wiring tray straddles both tongues of the wiring tray. In the case where the joint box is mounted on the fixed base provided, the joint box is attached to the fixed base mounted on the wiring tray, so the trunk line is stored in the wiring tray Wiring can be performed, and there is an advantage that the trunk line is not mixed with the branch line and the wiring is easy to understand. Even in this configuration, the wiring tray has a function of protecting the trunk line, and in this configuration, the fixing stand functions as an adapter for connecting the wiring tray to the joint box. There is an advantage that ready-made ones can be used.

According to a fourteenth aspect of the present invention, a through hole for inserting a trunk line connected to a terminal portion of a joint box is formed in a fixed base, and a cover plate for covering an opening surface of a portion of the wiring tray other than the fixed base is provided. With the provision, the opening surface of the wiring tray is covered with the cover plate, and furthermore, since the trunk line is introduced into the wiring tray through the through hole provided in the fixed base, there is an advantage that the function of protecting the trunk line is further enhanced. .

According to the fifteenth aspect of the present invention, in the case where the terminal cover is fixed to the fixed base and covers the terminal portion of the joint box and the through hole, the terminal cover is provided so that the terminal from the fixed base to the terminal portion is provided. There is an advantage that the exposed portion of the trunk line is covered with the terminal cover, and the function of protecting the trunk line is further enhanced.

[Brief description of the drawings]

FIG. 1 shows a plug used in an embodiment of the present invention;
(A) is a plan view, (b) is a cross-sectional view, and (c) is a plan view in a state where a half body is opened.

FIG. 2 is a perspective view showing a plug and a tap used in the same.

FIG. 3 is a perspective view showing a plug and a tap of another shape in the same.

FIG. 4 is a perspective view showing a panel bushing used in the same.

FIG. 5 is a perspective view showing a plug and a floor outlet used in the same.

FIG. 6 is a schematic sectional view showing a floor outlet used in the embodiment.

FIGS. 7A and 7B show other plugs used in the embodiment; FIG. 7A is a plan view, FIG. 7B is a bottom view, FIG. 7C is a cross-sectional view, and FIG.

FIG. 8 shows still another plug used in the same as the above (a).
Is a plan view, (b) is a side view, and (c) is a cross-sectional view.

FIGS. 9A and 9B show another plug used in the embodiment, in which FIG. 9A is a plan view, FIG. 9B is a side view, and FIG.

10A is a plan view showing a state where a housing of the plug shown in FIG. 9 is opened, and FIG. 10B is a cross-sectional view of the plug shown in FIG.

FIG. 11 is a perspective view of a joint box used in the embodiment.

FIG. 12 is a perspective view showing a state where a wiring path fixing frame is attached to the joint box used in the above.

FIG. 13 is a perspective view showing a state in which a trunk line is connected to the joint box used in the first embodiment.

FIG. 14 is a perspective view showing a state where a wiring path fixing frame and a terminal cover are attached to the joint box used in the first embodiment.

FIG. 15 is a cross-sectional view showing a state where a wiring path fixing frame and a terminal cover are attached to the joint box used in the above.

FIG. 16 is a cross-sectional view showing a construction example of the above.

FIG. 17 is a plan view showing a construction example of the above.

FIG. 18 is a plan view showing another construction example of the above.

FIG. 19 is a perspective view showing a wiring tray used in the above.

FIG. 20 is a perspective view showing a state where a fixing base is attached to the wiring tray in the same as above.

FIG. 21 is a perspective view showing a state where a joint box is attached to the wiring tray in the same as above.

FIG. 22 is a sectional view showing a construction example of the above.

FIG. 23 is a plan view showing a construction example of the above.

FIG. 24 is a perspective view showing a state where another fixing base is attached to the wiring tray in the above.

FIG. 25 is a perspective view showing a state where a joint box is attached to the wiring tray in the above.

FIG. 26 is a perspective view showing a state where the terminal cover is attached to the joint box in the above.

FIG. 27 is a plan view showing a state where the terminal cover is attached to the joint box in the above.

FIG. 28 is a perspective view showing a junction box used in the embodiment.

FIG. 29 is a schematic configuration diagram showing a construction example of the above.

FIG. 30 is a perspective view showing another junction box used in the embodiment.

FIG. 31 is a schematic configuration diagram showing a construction example of the above.

FIG. 32 is a perspective view showing a conventional construction example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor 2 Prop 3 Floor material 11 Tap 12 Floor outlet 13 Blade insertion hole 13a Blade insertion hole 15 Outlet box 15a Through hole 16 Outlet block 18 Bushing for box 20 Plug 21 Housing 21a, 21b Half body 21h Conduit tube Mounting part 22a, 22b Assembly screw 24 Plug blade 26 Conduit connection part 29 Holding member 30 Joint box 32 Terminal part 33 Branch connector 41 Conduit pipe 42a, 42b Conduit pipe 43 Wiring tray 43a Tongue piece 70 Coupling adapter 71a, 71b Half Member 74 Base 75 First pressing member 76 Second pressing member 77 Mounting screw 80 Wiring path mounting frame 82 Connecting piece 84 Fixed hole 85 Mounting frame bushing 87 Wiring box 90 Fixed base 93 Cover plate 94 Through hole 95 Terminal cover 101 Fixed base 10 Wiring cover 104a through hole L0 trunk L1 branch

Claims (15)

[Claims] 1. A joint box having a branch connector connected to a main line and branching a main line in an internal space between a floor forming a free access floor and a floor material, and a joint box connected to one end of a branch line and connected to a branch connector. A plug that is detachably connected and electrically connects the branch line to the trunk line, a wiring device provided at the other end of the branch line, and a wiring path that stores at least one of the trunk line and the branch line, and includes a joint box and a plug. A wiring system for a free access floor, wherein a connecting means for connecting a wiring path is formed on at least one of the wiring paths. 2. The flexible plug according to claim 2, wherein the plug includes a housing made of an insulating material holding a contact electrically connected to a branch connector, and the wiring path is a flexible conduit for storing a branch line. 2. The housing according to claim 1, wherein the housing is formed by connecting a pair of halves, and further includes a conduit connecting portion that sandwiches one end of the conduit between the two halves as coupling means. Wiring system for free access floors. 3. A flexible conduit for accommodating a branch line, wherein the plug includes a housing made of an insulating material holding a contact electrically connected to a branch connector, and the wiring path is a flexible conduit tube. The coupling means includes a conduit mounting portion provided on the housing, on which one end of the conduit is placed, a pressing member for clamping one end of the conduit between the conduit mounting portion, and a pressing member. 2. The wiring system for a free access floor according to claim 1, further comprising an assembly screw attached to the housing. 4. The plug has a housing made of an insulating material holding a contact electrically connected to a branch connector, and the wiring path is a flexible conduit for accommodating a branch line, 2. The wiring system for a free access floor according to claim 1, wherein said coupling means comprises a coupling adapter for holding a part of said housing and one end of said conduit tube in an inserted form. 5. The wiring system for a free access floor according to claim 4, wherein said coupling adapter comprises a pair of halves which sandwich a part of said housing and one end of said conduit tube. 6. A first holding member for holding a part of the housing between a base on which a part of the housing and one end of the conduit tube are mounted, and a part of the housing between the base and the base. And a second holding member for holding one end of the conduit tube between the base and the base, and mounting screws for attaching the first and second holding members to the base, respectively. Item 4. The wiring system for a free access floor according to Item 4. 7. The wiring device is a tap having a blade insertion port, wherein the tap is formed by connecting two members of a body and a cover, and the other end of the conduit is connected to the body. The wiring system for a free access floor according to claim 2, further comprising a conduit holding portion sandwiched between the cover and the cover. 8. The floor, comprising: an outlet box embedded in an internal space so as to be open to a floor material surface; and an outlet block provided with a blade insertion port and arranged in the outlet box. An outlet, characterized in that a box bushing is provided which is fixed to a through hole provided in a peripheral wall of the outlet box, holds the other end of the conduit, and passes a branch line in the conduit to the peripheral wall of the outlet box. 7. The wiring system for a free access floor according to claim 2, wherein: 9. A wiring path mounting frame fixed to the joint box, wherein the wiring path is a conduit for accommodating a main line, and is provided in a fixing hole provided in a connecting piece provided upright on the wiring path mounting frame. 2. A wiring system for a free access floor according to claim 1, wherein a bushing for a mounting frame, which is fixed and holds one end of the conduit and passes a main line in the conduit to a connecting piece, is provided as the coupling means. . 10. The wiring system for a free access floor according to claim 9, wherein a terminal cover forming a wiring box is provided together with the wiring path mounting frame, and a main line is connected to a terminal portion of the joint box in the wiring box. . 11. The wiring system for a free access floor according to claim 9, wherein the conduit has flexibility. 12. The wiring system for a free access floor according to claim 9, wherein said conduit has rigidity. 13. A fixed tray provided with a wiring tray having a cross-sectional shape in which an upper surface is opened and tongues extend from both sides of the opening edge to both sides, and is disposed so as to extend between both tongues of the wiring tray. The wiring system for a free access floor according to claim 1, wherein the joint box is connected in a mounted state. 14. A fixing base, wherein a through-hole for inserting a main line connected to a terminal part of a joint box is formed in a fixing base, and a cover plate is provided to cover an opening surface of a portion of the wiring tray other than the fixing base. The wiring system for a free access floor according to claim 13. 15. The wiring system for a free access floor according to claim 14, wherein a terminal cover fixed to the fixing base and covering the terminal portion and the through hole of the joint box is provided.