JP3468071B2 - Wiring system for raised floor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint box arranged in an internal space of a free access floor, to which a trunk line is connected, and a plug which is a branch port of the trunk line is detachably connected to a joint box. The present invention relates to a free access floor wiring system for branching a branch line.

[0002]

2. Description of the Related Art In recent years, a wiring system using a free access floor has become widespread as the number of information devices used in offices has increased. A wiring system using a free access floor is considered to be easy to handle when the layout is changed because the wiring can be freely routed according to the layout in the office. However, if you change the position of the outlet, you also have to change the route to route the wiring, so if there are many outlets in the office and the wiring to the outlet is long, it is very difficult to change the position of the wiring. It is troublesome. In other words, although it is possible to deal with the layout change in the office, the construction work is troublesome, so conventionally, the wiring was often laid after the layout in the office was decided.

On the other hand, a joint box connected to the 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 needed. It is considered to construct a wiring system by connecting them. That is, in this wiring system, as shown in FIG. 32, the trunk line L0 is laid at the time of construction, and the joint box 30 is connected to the trunk line L0. Connect the branch line L1 connecting 12 to the joint box 3
It connects to 0. With this configuration, since the positions up to the joint box 30 are fixed, it is possible to pre-wire 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. Wiring is easier to handle because it only changes the connection relationship with. Plug 20 on branch line L1
Is provided, and the connection relation can be easily changed by attaching and detaching the connector 32 and the plug 20 provided on the joint box 30.

[0004]

However, in the conventional wiring system, between the floor 1 forming the free access floor and the floor material 3 supported above the floor 1 via the support legs 2. The main line L0 and branch line L1 in the space formed in
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 to damage the trunk line L0 or branch line L1. To solve such a problem, it is considered that the trunk line L0 and the branch line L1 are housed in a wiring path formed of metal or the like, but a free access floor wiring system using this kind of wiring path is still adopted. It has not been.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a wiring system for a free access floor capable of accommodating at least one of a trunk line and a branch line in a wiring path. To do.

[0006]

According to a first aspect of the present invention, there is provided a joint box provided with 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, A plug that is connected to one end of the branch line and that is 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 flexible first housing 1 conduit
A Ranaru wiring path contact, at least one of the joint box and the plug coupling means for coupling the wiring path is formed, the plug is electrically connected to the branch connector
A housing made of insulating material that holds the child
Means inserts a portion of the housing and one end of the first conduit.
It consists of a coupling adapter that holds it in the inserted form .
According to this configuration, the coupling means that couples the wiring path to at least one of the joint box and the plug is formed,
Since at least one of the trunk line and the branch line is housed in the wiring line, at least one of the trunk line and the branch line is protected by the wiring line.

[0007]

[0008]

Further, there's a housing the branch line to the first electric wire tube having flexibility, desired position freely lead wiring device the branch because it is possible to bend the first conduit Can be provided. Moreover, since coupling the plug and the first conduit via the coupling adapter, it is possible to couple the first conduit to the ready-made plugs.

According to a second aspect of the present invention, in the first aspect of the present invention, the coupling adapter includes a portion of the housing and a first portion .
It is composed of a pair of half members that sandwich one end of the electric wire tube. According to this structure, since the coupling adapter is composed of the two half members, the number of parts constituting the coupling adapter is small and it can be provided at low cost.

According to a third aspect of the present invention, in the first aspect of the invention, the coupling adapter includes a part of the housing and a first part .
A base on which one end portion is placed in the conduit, one end of the first conduit between a first pressing member for pinching a part of the housing, a base between the base And a mounting screw for mounting the first and second pressing members to the base, respectively. With this configuration, the plug and the first conduit can be fixed to the base by the corresponding first and second pressing members, so that the coupling adapter, the plug, and the first conduit can be fixed. The joining work becomes easy.

[0012] The invention of claim 4 is from claim 1 to claim
In the invention of claim 3 , the wiring device is a tap provided with a plug blade insertion port, the tap is formed by connecting two members of a body and a cover, and the other end of the first conduit tube is formed. Is provided between the body and the cover. According to this configuration, since the first conduit is connected to the tap that is the wiring device, the branch line can be covered with the first conduit over the entire length between the plug and the tap.

The invention of claim 5 is defined by claim 1 to claim 1.
In the invention of claim 3 , the wiring device is an outlet box embedded in an internal space in a form of opening on a floor material surface;
A floor outlet comprising an outlet block arranged in an outlet box having a blade insertion slot, which is fixed to a through hole provided in a peripheral wall of the outlet box and holds the other end of the first electric conduit. A box bushing for connecting a branch line in the first conduit to a peripheral wall of the outlet box is provided. According to this configuration, since the first conduit is connected to the outlet box that constitutes the floor outlet that is a wiring device, the branch line is provided over the entire length between the plug and the outlet box .
It can be covered with one conduit. In addition, the branch line from the peripheral wall of the outlet box to the outlet block
Although not covered by the first conduit, this portion is housed inside the outlet box, so the branch line can be protected.

According to a sixth aspect of the present invention, in the first aspect of the present invention, there is provided a second conduit tube including a wiring path mounting frame fixed to the joint box, for accommodating a trunk line as the wiring path.
The provided mounting frame for Tsusen the trunk of the second wire tube to the connecting piece while holding one end portion of said fixed to a fixing hole formed in the connecting piece provided upright on the wiring line attaching frame second conduit the use bushings are those digits set. According to this configuration, since the second conduit for accommodating the main line is provided by providing the attachment frame bushing on the wiring line attachment frame to which the joint box is attached, most of the main line connected to the joint box is attached. It can be covered by a second conduit. further,
In this configuration, the wiring path mounting frame is attached to the second joint box .
Since it functions as an adapter for connecting the electric wire tube of the above, the joint box can be diverted even if the second electric wire tube is used.

According to a seventh aspect of the present invention, in the sixth aspect of the invention, a terminal cover that forms a wiring box together with the wiring path mounting frame is provided, and the trunk line is connected to the 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 trunk line is connected to the terminal part of the joint box in the wiring box, the trunk line is connected between the mounting frame bushing and the terminal part. The trunk line can be protected by covering with.

The invention of claim 8 is claim 6 or claim
In the invention of No. 7 , the second electric conduit has flexibility. According to this configuration, since the second conduit for accommodating the main line is flexible, the degree of freedom in laying the main line is relatively high, and even if there is an obstacle or the like at the laying position of the main line. It becomes possible to make a detour. The invention of claim 9 is
In the invention of claim 6 or claim 7 , the second conduit has rigidity. According to this configuration, since the relative positions of the joint boxes are substantially determined by the second conduit, the joint boxes can be easily aligned. Further, it can be provided at a low cost as compared with a conduit tube which is usually flexible.

According to a tenth aspect of the present invention, in the first aspect of the present invention, the wiring tray is provided with a sectional shape in which an upper surface is opened and tongue pieces are extended from the opening edge to both sides, and between the tongue pieces of the wiring tray. The joint box is mounted on a fixed base arranged in a straddle form and is joined. According to this structure, since the joint box is attached to the fixed base placed on the wiring tray, the trunk line can be housed and wired in the wiring tray. That is, the trunk line does not coexist with the branch line, and the wiring becomes easy to understand. Even in this configuration, the wiring tray has a function of protecting the main line. Further, in this configuration, since the fixing base functions as an adapter for connecting the wiring tray to the joint box, it is possible to use a ready-made joint box even though the wiring tray is used.

According to an eleventh aspect of the present invention, in the tenth aspect of the invention, a through hole for inserting a main line connected to the 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 formed. A cover plate is provided to cover the. According to this structure, the opening surface of the wiring tray is covered with the lid plate, and the trunk line is introduced into the wiring tray through the through hole provided in the fixed base, so that the function of protecting the trunk line is further enhanced.

According to a twelfth aspect of the present invention, in the eleventh aspect of the present invention, a terminal cover is provided which is fixed to the fixed base and covers the terminal portion of the joint box and the through hole. According to this configuration, since the terminal cover is provided, the exposed portion of the main line from the fixed base to the terminal portion is covered with the terminal cover, and the function of protecting the main line is further enhanced.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The basic configuration of the wiring system of this embodiment is almost the same as the conventional configuration shown in FIG. 32, and is connected to a wiring device such as an outlet and a wiring device via a branch line L1. It is provided with a plug 20 and a joint box 30 provided with a connector 31 connected to the trunk line L0 and removably coupled to the plug 20 (see FIG. 32).

However, since at least one of the trunk line L0 and the branch line L1 is housed in the wiring line, a flexible conduit 41 is used for the branch line L1 and the trunk line L0 is flexible. 42a having a conduit, and a conduit 4 having rigidity
Either 2b or the wiring tray 43 having an open upper surface 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 joining a pair of half-divided bodies 21 a and 21 b, which are divided in the thickness direction, by caulking tacks 22. An opening window 23 is formed on one end surface of the housing 21 in the longitudinal direction, and three plug blades (contacts) 24 are arranged in the housing 21 so as to face the opening window 23. A partition wall 25 is formed inside the housing 21 to partition the adjacent blades 24. Further, each stopper blade 24 is provided with a retaining piece 24a which is orthogonal to the inserting / removing direction, and the retaining piece 24a is locked by the rib 21c protruding on the inner surface of the half body 21a, and the stopper blade 24 is fixed. It A crimp portion 24b formed in a tubular shape is formed on a part of the blade 24, and the crimp portion 24b is formed.
The core wire 52 of the insulation-coated electric wire 51 of the branch line L1 is inserted into and then caulked, so that the core wire 52 can be coupled to the blade 24. Here, the branch line L1 is one in which three insulation-coated electric wires 51 are wrapped in an insulating sheath 50 of synthetic resin, and the core wire 52 of each insulation-coated electric wire 51 is a blade 24.
Respectively connected to.

A wire coupling portion 26 is formed at the end of the housing 21 opposite to the opening window 23 in the longitudinal direction. On the inner peripheral surface of the housing 21, a partition piece 21d is provided so as to project between the blade 24 and the conduit tube connecting portion 26, and the partition piece 21d is opened to the extent that the insulating sheath 50 can be inserted.
The conduit connecting portion 26 is opened in a circular cross section, and the inner diameter of the conduit connecting portion 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 surface of the conduit 41 is separated by the partition 2
By contacting 1d, the relative position of the conduit 41 to the housing 21 is regulated. Also, the conduit 41
Is sandwiched between the two halves 21a and 21b, and the housing 2
Combined with 1.

By the way, the plug 20 is a so-called harness plug having a lock body (not shown), and is structured so as to be 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. In addition, a lock release lever 27 is arranged on the outer surface of the one half body 21b of the housing 21, and when the lock release lever 27 is operated, the locked state by the lock body is released and the plug 20 can be pulled out from the connector 31. Is done.

Since the plug 20 shown in FIG. 1 is one in which the halves 21a and 21b are joined by using the caulking stud 22, the branch line L1 is not connected at the construction site, but the branch line L1 is It is shipped with the plug 20 connected in advance at the factory. At the other end of the branch line L1 having one end connected to the plug 20 described above, a tap 11 as a wiring device is connected as shown in FIGS. 2 and 3, or wiring is performed as shown in FIGS. A floor outlet 12 as a device is connected. Illustrated tap 1
1 is provided with four sets of blade inserts 13, and FIG.
In FIG. 3, each blade insertion port 13 is formed into a shape into which both a flat plate blade blade and a round bar blade blade can be inserted. In the case shown in FIG. 3, the blade insertion port 13 is shown. In addition to the above, a blade insertion port 13a for grounding is provided. Further, a switch 14 for collectively turning on / off the connection between the blade insertion port 13 and the branch line L1 is provided. The tap 11 is formed by connecting two members, a body accommodating a blade receiving spring (not shown) and a cover having the blade insertion slot 13, and
An electric wire holding portion (not shown) for sandwiching the end portion 1 between the body and the cover is provided. The structure of the electric wire holding portion is similar to that of the electric wire tube connecting portion 26 of the plug 20, and the electric wire tube 41 is sandwiched between the body and the cover by connecting the body and the cover. A panel bushing 44 as shown in FIG. 4 is attached to the outer peripheral surface of the conduit 41, and the panel bushing 44 is positioned in the notch 3a provided in the floor member 3 for inserting the conduit 41. The conduit 41 is positioned with respect to the floor panel, and the conduit 41 is protected from being damaged by the floor panel.

On the other hand, the floor outlet 12 is provided with a metal outlet box 15 opening on the surface of the floor panel, and a door plate 17 is provided on the opening surface of the outlet box 15. Further, an outlet block 16 having a blade insertion slot is housed in the outlet box 15, and the outlet block 1 is opened with the door plate 17 open.
When a flat blade provided on the plug is inserted into the plug 6, the plug is housed in the outlet box 15. That is, in a state where the plug is connected to the outlet block 16, the door plate 17 is closed, and the electric wire connected to the plug can be drawn to the outside from the gap formed between the outlet box 15 and the door plate 17. Has been done. A through hole 1 is provided on the peripheral wall of the outlet box 15.
5a is formed, and the conduit tube 41 can be coupled to the through hole 15a via the box bushing 18. The box bushing 18 is formed in a cylindrical shape, and is fixed to the outlet box 15 by a nut (not shown) that is screwed into a screw portion (not shown) formed on the outer peripheral surface of one end, and the conduit tube 41 is provided inside the other end. Is inserted into the conduit 4
1 is engaged. Therefore, by using the box bushing 18, the branch line L1 runs through the through hole 15a and the conduit tube 4 runs through the outlet box 15.
1 fixed.

By the way, the above-mentioned plug 20 holds the electric wire tube 41 by connecting the pair of half-divided bodies 21a and 21b by using the caulking stud 22, and the plug 20 and the electric wire tube 41 are connected to each other. Must be done in 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 that is attached to a part of the plug body 21f and that houses the blade 24 between the plug body 21f, and the plug body 21f and the plug cover 21g. Are coupled to each other using the assembly screw 22a.
In addition, a pressing member 29 is attached to 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. Furthermore, in the plug 20 shown in FIG.
A terminal screw 61 is provided on the plug blade 24, and the blade 24 and the branch line L1 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 blade 24 by the terminal screw 61. As the crimp terminal 62, it is preferable to use a round type terminal having a round hole formed at its tip.

The plug 20 having the structure shown in FIG. 7 has an electric wire tube mounting portion 21h in which an electric wire tube 41 is provided in a plug body 21f.
And a pressing member 29, and a partition 21d for positioning the end of the conduit 41 is provided on the plug body 21f and the plug cover 21g. As described above, in the plug 20 shown in FIG. 7, the plug cover 21g and the pressing member 29 are connected to the plug body 21f by using the assembly screws 22a and 22b, and the terminal screw 61 is connected to the blade 24. Using the branch line L
Therefore, it becomes possible to connect the branch line L1 to the plug 20 and connect the conduit 41 to the plug 20 at the construction site. Other configurations are similar to those of the plug 20 shown in FIG.

Each of the above-mentioned plugs 20 had a dedicated structure for connecting the conduit 41, but FIG.
As described above, the plug 20 provided conventionally is diverted, the coupling adapter 70 is provided, and the plug 20 and the conduit 41 are provided.
It is a feature of the present invention that a configuration for connecting and is also used.
It The coupling adapter 70 includes a pair of half members 71a, 71.
b is joined by caulking rivets 72, and a part of the plug 20 and a part of the conduit 41 are sandwiched between the half members 71a and 71b in such a manner that they are inserted into the connection adapter 70, respectively. . Here, in the housing 21 of the plug 20, the portion to be inserted into the coupling adapter 70 is formed with irregularities, and by forming the inner peripheral surface of the coupling adapter 70 so as to conform to this irregular shape, the coupling adapter is formed. 7
The plug 20 is prevented from coming off from 0. Further, partition ribs 73 project from the inside of the coupling adapter 70, and the partition ribs 73 separate the plug 20 and the electric wire tube 41 so as not to directly contact each other. With this configuration,
Since the coupling adapter 70 is assembled by using the caulking studs 72, the plug 20 and the electric conduit 41 are coupled at the factory. Therefore, the connection structure between the plug 20 and the branch line L1 is shown in FIG. Similar to the plug 20, the structure in which the core wire 52 is connected to the crimp portion 24b provided on the blade 24 may be adopted. This type of plug is shown, for example, in Japanese Patent Application No. 3-56814.

The coupling adapter 70 may have the structure shown in FIG. The coupling adapter 70 has a base 7 on which a part of the plug 20 and a part of the conduit 41 are placed.
4 for holding the plug 20 between itself and the base 74
Of the pressing member 75 and a second pressing member 76 that holds the conduit 41 between the pressing member 75 and the base 74 are separately provided, and the base 74 and the first and second pressing members 75 and 76 are attached. It has the structure connected by the screw 77. In short, the plug 20 and the conduit 41 can be separately coupled to the base 74. The plug 20 used here has a structure shown in FIG.
As shown in FIG. 0, the blade 24 may be of a type in which the branch line L1 is connected using the terminal screw 61. This type of plug 20 is shown, 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 an assembly screw 22c.

To construct the wiring system, the joint box 30 is required as described above. The joint box 30 includes a branch box for branching the trunk line L0 into two and a branch box for branching into four, and FIG. 11 shows a joint box 30 with four branches. The joint box 30 includes a rectangular parallelepiped body 31, and terminal portions 32 for connecting the trunk line L0 are provided at central portions of both side surfaces in the longitudinal direction of the body 31. Further, connectors 33 for detachably connecting the above-described plug 20 are provided at both ends of both side surfaces in the longitudinal direction of the body 31. Both terminals 3
The conductive parts of the respective poles forming 2 are commonly connected in the body 31, and the trunk line L0 connected to one terminal part 32 and the trunk line L0 connected to the other terminal part 32 are connected via the joint box 30. Are electrically connected. That is, the main line L0 can be sent and wired. Further, each connector 33 is branched from the terminal portion 32 inside the body 31. Here, the terminal portion 32
Is equipped with a so-called quick-connect terminal for holding the electric wire by the spring force of the leaf spring. When the electric wire is inserted into the electric wire insertion port provided in the terminal portion 32, the electric force is locked by the spring force of the leaf spring to prevent the wire from coming off. With that, electrical connection is made.

A mounting hole 35 for inserting the mounting screw 34 is formed in the body 31 of the joint box 30. When the trunk line L0 is housed in the flexible conduit 42a or the rigid conduit 42b, the wiring line 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 a connecting piece 82 which is provided upright at both ends of the base piece 81 and faces each terminal portion 32, and is formed in a substantially U-shape. Further, a receiving piece 83 is extended from the leading edge of the connecting piece 82. The wiring path mounting frame 80 is formed to have a larger left-right width than the terminal portion 32. A fixing hole 84 is formed in each connecting piece 82, and as shown in FIG. 13, the conduit tubes 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 tube 4 is attached to the mounting frame bushing 85.
2a, 42b (in the illustrated example, a flexible conduit 42a
Since the mounting frame bushing 85 has the same configuration as the box bushing 18 described above, the trunk L0 housed in the conduit 42a is connected to the connecting piece 82. It is possible to connect the conduit 42a to the wiring path mounting frame 80 while passing the wire.

As shown in FIG. 14, a terminal cover 86 can be attached to 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 to the receiving piece 83. The wiring box 87 covers the terminal portion 32, and
The trunk line L0 drawn from a is protected from being exposed to the outside. By providing such a wiring box 87, it is possible to prevent dust from adhering to the connection portion of the main line L0 to the terminal portion 32, and it is possible to reliably avoid an accident due to tracking. In addition, since the trunk line L0 is housed in the wiring box 87 at the connection portion with the joint box 30, the plug 20 is connected to the joint box 30.
It is possible to prevent the trunk line L0 from being accidentally pulled when the connector 33 is inserted into or removed from the connector 33. Moreover, as shown in FIG.
If it is not necessary to connect a part of the insulation-coated electric wire 55 that becomes the trunk line L0 to the joint box 30, the wiring box 8
It is possible to route the insulation-coated electric wire 55 within 7 without connecting to the joint box 30. That is, a gap is formed between the joint box 30 and the wiring box 87 so that the insulation-coated electric wire 55 can pass therethrough.

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

In constructing the trunk line L0, in addition to using the conduits 42a and 42b as described above, a wiring tray 43 as shown in FIG. 19 may be used. Wiring tray 43
Has a substantially U-shaped cross section with an open upper surface, and has a tongue piece 43a extending outward from both opening edges. When the wiring tray 43 is used, as shown in FIG. 20, the fixed base 90 is attached to the wiring tray 43 so as to straddle both tongue pieces 43a. The fixed base 90 is a plate-shaped member, and is arranged in the longitudinal direction of the wiring tray 43.
The tongue piece 43a is fixed to the wiring tray 43 by using fixing screws 91 which are inserted into fixing holes 43b formed at regular intervals. Further, a fixing screw hole 90a is formed in the fixing base 90, and as shown in FIG. 21, the mounting screw 92 inserted into the joint box 30 is screwed into the fixing screw hole 90a, whereby the joint box 30 is fixed. 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 project from the opening surface of the wiring tray 43.
Therefore, as shown in FIG. 22, when the wiring tray 43 is placed on the floor 1, the joint box 30 is not attached to the floor 1.
Will be placed above (the wiring tray 43 is on the floor 1
Placed). When the wiring tray 43 is used, the trunk line L0 is stored in the wiring tray 43 as shown in FIG. If the wiring tray 43 is used in this way, the relative positional relationship between the joint boxes 30 can be regulated by the wiring tray 43.
Further, since the trunk line L0 is housed in the wiring tray 43, it can be easily separated from the branch line L1.

When the wiring tray 43 is used, the opening surface of the wiring tray 43 may be opened as described above, but in order to more reliably separate the trunk line L0 and the branch line L1, the opening surface of the wiring tray 43 is separated. Cover plate 93 (see FIG. 26).
Reference) may be provided. In this configuration, as the fixed base 90, as shown in FIG. 24, a fixed 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 line L0 is connected to the wiring tray 43 through the through hole 94.
Can be stored in. Therefore, the wiring tray 43
26 can be covered with a lid 93 except for a portion of the opening surface of the above which is covered with the fixing base 90.
Here, it is desirable to cover the terminal portion 32 of the joint box 30 with the terminal cover 95 in order to reliably prevent tracking. The terminal cover 95 is arranged so as to straddle both through holes 94 provided in the fixed base 90, covers the terminal portion 32 of the joint box 30, and is fixed to the fixed base 90 using the fixing screw 96. In this way, the cover plate 93
By using the terminal cover 95 and the terminal cover 95, the trunk line L0 is housed in the wiring tray 43 without being exposed to the outside. In this state, as shown in FIG. 27, the plug 2
Connect 0. In addition, the trunk line L0 is the wiring tray 43.
Since it is housed in and exposed to the outside, it is easy to separate from the branch line L1.

26 and 27 show a configuration example in which the terminal cover 95 is coupled to the fixed base 90 and a part of the joint box 30 is exposed, but as shown in FIG. 28, a junction for housing the joint box 30. Box 1
00 may be used. The junction box 100 is a box that houses the joint box 30. The junction box 100 is fixed to a fixed base 101 that is opened and fixed on the tongue 43a of the wiring tray 43, and is fixed to the upper surface of the fixed base 101. And a terminal cover 102 that Fixed base 1
01 and the terminal cover 102 are connected by a screw (not shown). The lower portion of the fixed base 101 is housed in the wiring tray 43, and the mounting pieces 103 protruding from both side surfaces of the fixed base 101 are fixed to the wiring tray 43 in a form mounted on the tongue pieces 43a. Through holes 104 are formed in the side walls of the fixed base 101, which are different from the surface on which the mounting pieces 103 are provided in a protruding manner.
a and the extraction hole 104b are formed. Through hole 104
a is located on the side wall of the fixed base 101 below the protruding position of the mounting piece 103, and the upper edge of the extraction hole 104b is open.

Therefore, the insulation-coated electric wire 55 to be 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 the cover plate 93 is provided on the wiring tray 43 or not. it can. On the other hand, the extraction hole 104
b is formed so that the conduit 41 passing through the branch line L1 can be inserted, the plug 20 is connected to the connector 33 with the terminal cover 102 opened, and the conduit 41 is inserted into the lead-out hole 104b and then the terminal. By closing the cover 102, the connection part to the joint box 30 can be housed in the junction box 100.

FIG. 29 shows an example in which the trunk line L0 is housed in the wiring tray 43 and the junction box 100 is used. 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 accommodating a joint box 30 (not shown) is provided at an appropriate position on the wiring tray 43 to branch the trunk line L0. The branch line L1 branched by the joint box 30 is passed through the electric wire tube 41 and is connected to the tap 11 or the floor outlet 12.
In the example shown in FIG. 29, wiring of information systems used for telephones and communication is also performed, and the wiring board 112 similar to the wiring tray 43 accommodating the trunk line L0 is used for the information board 111.
The information trunk line L2 is wired from the above, and the information branch line L3 is branched using the joint box 113 for information. In the illustrated example, the modular jack 114 for PDS is attached to the information branch line L3.
Are connected.

FIG. 30 shows a construction example in which the wiring tray 43 is not used. That is, the trunk line L0 is passed through the electric conduits 42a and 42b (the illustrated example shows the electric conduit 42b having rigidity), 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 placed on the floor 1. Further, the knockout portion 104 formed into a thin wall that can be cut in place of the through hole 104a
c is provided. The knockout portion 104c is cut off to form a through hole capable of holding a bushing (not shown) that holds the electric 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 invention of claim 1, a joint box provided with a branch connector which is connected to a trunk line and branches the trunk line in an internal space between a floor forming a free access floor and a floor material, and one end of a branch line. Connect the plug that is connected and detachably connected to the branch connector to electrically connect the branch line to the main line, the wiring device provided at the other end of the branch line, and the branch line.
And a wiring path including the first conduit having a flexible housing, coupling means for coupling the wiring path is formed in at least one of the joint box and the plug, the plug
The insulation that holds the contact electrically connected to the branch connector.
The housing is made of edge material, and the connecting means is a housing.
Hold a part of the plug and one end of the first conduit in an inserted form
The connecting means is formed in at least one of the joint box and the plug, and at least one of the trunk line and the branch line is housed in the wire route. At least one has the advantage that it is protected by the wiring path.

[0044]

[0045]

[0046] In addition, there's a housing the branch line to the first electric wire tube having flexibility, desired position freely lead wiring device the branch because it is possible to bend the first conduit In addition, since the plug and the first electric wire are connected via the connecting adapter, there is an advantage that the first electric wire can be connected to the ready-made plug . is there.

According to a second aspect of the present invention, in the case where the coupling adapter is composed of a pair of half-split members that sandwich a part of the housing and one end of the first electric wire tube, two half-split members are provided. Since the coupling adapter is composed of members, there is an advantage that the coupling adapter can be provided at a low cost with a small number of parts. According to a third aspect of the present invention, the coupling adapter includes a portion of the housing and a first portion .
A base on which one end portion is placed in the conduit, one end of the first conduit between a first pressing member for pinching a part of the housing, a base between the base Of a second pressing member for holding the plug and a mounting screw for attaching the first and second pressing members to the base, respectively, the plug and the first conduit tube correspond to each other. Since it can be fixed to the base by the first and second pressing members, there is an advantage that the connecting work of the connecting adapter and the plug and the first electric conduit becomes easy.

According to a fourth aspect of the present invention, the wiring device is a tap provided with a plug blade insertion port, and the tap is formed by connecting two members of a body and a cover, and
With a conduit holding portion that holds the other end of the first conduit between the body and the cover, the first conduit is connected to the tap, which is a wiring device. There is an advantage that the branch line can be covered with the first conduit over the entire length of.

According to a fifth aspect of the present invention, the wiring device is arranged in the outlet box provided with an outlet box which is embedded in the internal space so as to open on the floor surface and a blade insertion slot. a floor outlet consisting of a power outlet blocks, the peripheral wall of the branch of the outlet box of the first electric wire tube holds the other end portion of the first conduit is fixed to the through hole formed in the peripheral wall of the outlet box In the case where the box bushing for passing wires is provided, the first conduit tube is connected to the outlet box that constitutes the floor outlet that is a wiring device, and therefore the branch line is provided over the entire length between the plug and the outlet box. The first
Can be covered by one of the conduit, also, the branch line at a portion extending from the peripheral wall of the outlet box to the outlet block the
Although it is not covered by the conduit tube No. 1 , this part is housed inside the outlet box, so that there is an advantage that the branch line can be protected.

According to a sixth aspect of the present invention, a wiring path mounting frame fixed to the joint box is provided, and the wiring path is provided.
As a second conduit for accommodating the trunk, the wiring line attaching frame fixed to a fixing hole formed in the connecting piece which is erected on the second
In the case where the attachment frame bushing for holding one end of the electric wire tube and holding the main line in the second electric wire through the connecting piece is provided as the coupling means, the attachment frame is attached to the wiring path installation frame to which the joint box is attached. Since the second conduit for accommodating the main line is connected by providing the bushing for use, most of the main line connected to the joint box can be covered with the second conduit. since the mounting frame serves as an adapter for coupling the second conduit to the joint box, a joint box despite using the second conduit has the advantage that it is possible to divert ones ready.

According to a seventh aspect of the invention, in which the terminal cover for forming the wiring box together with the wiring path mounting frame is provided and the trunk line is connected to the terminal portion of the joint box in the wiring box, the wiring path mounting frame and the terminal are provided. 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.

[0052] As the invention of claim 8, intended to the second conduit having flexibility, since the second conduit for accommodating the trunk is flexible, trunk laying There is an advantage that the degree of freedom becomes relatively high, and even if there is an obstacle in the laying point of the main line, it can be bypassed. According to the invention of claim 9 , when the second conduit has rigidity,
Since the relative positions of the joint boxes are substantially determined by the second conduit, it is easy to align the joint boxes, and it is possible to provide the joint box at a lower cost than a flexible conduit. There are advantages.

According to a tenth aspect of the present invention, the wiring tray is provided with a cross-sectional shape in which the upper surface is opened and the tongue pieces are extended from the opening edge to both sides, and the wiring tray extends between both tongue pieces of the wiring tray. In the case where the joint box is mounted on the fixed stand that is placed, the joint box is attached to the fixed stand that is placed on the wiring tray, so the trunk line is stored in the wiring tray. Since wiring can be performed, there is an advantage that the main line does not mix 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, the fixed base functions as an adapter for connecting the wiring tray to the joint box, so that the joint box can be installed in the joint box even if the wiring tray is used. There is an advantage that a ready-made product can be used.

According to an eleventh aspect of the present invention, a through-hole for inserting a main line connected to the terminal portion of the joint box is formed in the fixed base, and a cover plate for covering the opening surface of the wiring tray except the fixed base is provided. In the case where it is provided, the opening surface of the wiring tray is covered with the lid plate, and moreover, the trunk line is introduced into the wiring tray through the through hole provided in the fixed base, so that there is an advantage that the function of protecting the trunk line is further enhanced. .

According to the twelfth aspect of the present invention, in which the terminal cover fixed to the fixed base and covering the terminal portion and the through hole of the joint box is provided, the terminal cover is provided so that the fixed base to the terminal portion are provided. The exposed portion of the trunk line is covered with the terminal cover, and there is an advantage that the function of protecting the trunk line is further enhanced.

[Brief description of drawings]

FIG. 1 shows a plug used in an embodiment of the present invention,
(A) is a plan view, (b) is a sectional view, and (c) is a plan view in a state where a half-split 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 the plug and the tap of another shape in the above.

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

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

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

FIG. 7 shows another plug used in the same as above, (a) is a plan view, (b) is a bottom view, (c) is a sectional view, and (d) is a bottom view of the plug body.

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

9A and 9B show another plug used in the above, wherein FIG. 9A is a plan view, FIG. 9B is a side view, and FIG. 9C is a sectional view.

10 (a) is a plan view of the plug shown in FIG. 9 with a housing opened, and FIG. 10 (b) is a sectional view of the plug shown in FIG.

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

FIG. 12 is a perspective view showing a joint box used in the above with a wiring path fixing frame attached thereto.

FIG. 13 is a perspective view of a joint box used in the above, in which a trunk line is connected.

FIG. 14 is a perspective view showing a joint box used in the same as above with a wiring path fixing frame and a terminal cover attached thereto.

FIG. 15 is a cross-sectional view showing a joint box used in the same as above with a wiring path fixing frame and a terminal cover attached thereto.

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 in which the fixing base is attached to the wiring tray in the above.

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

FIG. 22 is a cross-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 in which another fixing base is attached to the wiring tray in the above.

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

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

FIG. 27 is a plan view showing a state in which 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 above.

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 above.

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]

1 floor 2 props 3 floor materials 11 taps 12 floor outlet 13 Plug blade insertion port 13a Plug blade insertion port 15 Outlet box 15a through hole 16 outlet blocks Bushing for 18 boxes 20 plugs 21 housing 21a, 21b half body 21h conduit mounting part 22a, 22b Assembly screw 24 blades 26 Conduit connection part 29 Holding member 30 joint box 32 terminals 33 branch connector 41 conduit 42a, 42b conduit 43 wiring tray 43a tongue 70 coupling adapter 71a, 71b Half member 74 base 75 First pressing member 76 Second pressing member 77 mounting screw 80 Wireway mounting frame 82 Connecting piece 84 fixing hole 85 Bushing for mounting frame 87 wiring box 90 fixed base 93 Lid plate 94 through hole 95 terminal cover 101 fixed base 102 wiring cover 104a through hole L0 main line L1 branch line

─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-6-283239 (JP, A) JP-A-4-223079 (JP, A) JP-A-9-213138 (JP, A) JP-A-4- 351410 (JP, A) JP 9-121428 (JP, A) JP 62-107625 (JP, A) JP 7-211384 (JP, A) Actual development JP 62-177232 (JP, U) Actual development Sho 59-126523 (JP, U) Utility model registration 3020378 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02G 3/38 H02G 3/30

Claims (12)

(57) [Claims] 1. A joint box provided with a branch connector that 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 a branch connector that is connected to one end of a branch line and is connected to the branch line. It has a plug that is detachably connected and that electrically connects the branch line to the trunk line, a wiring device that is provided at the other end of the branch line, and flexibility to store the branch line.
And a connecting path for connecting the wiring path to at least one of the joint box and the plug, and the plug is electrically connected to the branch connector.
Made of insulating material holding contacts that are electrically connected
And a coupling means is part of the housing and the first electrical
It is a coupling adapter that holds the end of the wire tube in the inserted form.
Free access floor wiring system, characterized in that the Li Cheng. 2. The coupling adapter of the housing
A pair of half-divided portions for sandwiching a part and one end of the first conduit
The wiring system for a free access floor according to claim 1, which is made of a material . 3. The coupling adapter of the housing
A base on which a part and one end of the first conduit are placed;
A first pressing portion that holds a part of the housing between the table and the table
Holding one end of the first conduit between the material and the base
The second pressing member and the first and second pressing members.
Each is composed of a mounting screw attached to the base.
The wiring system for a free access floor according to claim 1 . 4. The wiring device includes a tap having a plug blade insertion port.
The tap has two members, a body and a cover.
It is formed by joining and the other end of the first conduit is
Equipped with a conduit holding portion sandwiched between the body and the cover
Any one of claims 1 to 3 characterized in that
The wiring system for the free access floor according to the item . 5. The wiring device is in a form of opening on the floor surface.
Outlet box embedded in the internal space and blade
Console equipped with an outlet and placed in the outlet box
It is a floor outlet consisting of
First fixed to the through hole in the peripheral wall
Holding the other end of the conduit of
For boxes where branch lines run through the peripheral wall of the outlet box
Claims 1 to請characterized in that a bushings
The wiring system for a free access floor according to any one of claim 3 . 6. An arrangement fixed to the joint box.
A line mounting frame is provided to store the main line as the wiring path.
A connecting piece that is provided with the conduit tube of 2 and is erected on the wiring path mounting frame
Holds one end of the second conduit by being fixed in a fixing hole provided in
And connect the trunk line in the second conduit to the connecting piece.
2. A bushing for a mounting frame is provided.
Free access floor wiring system described. 7. A wiring box is formed together with a wiring path mounting frame.
Provide a terminal cover to make a joint in the wiring box
Contractor characterized by connecting the main line to the terminal part of the box
The wiring system for a free access floor according to claim 6 . 8. The second conduit is flexible.
The wiring system for a free access floor according to claim 6, which is a characteristic of the wiring system. 9. The second conduit has rigidity.
The wiring system for a free access floor according to claim 6 or 7 . 10. A tongue piece having an open upper surface and extending from the opening edge to both sides.
Is equipped with a wiring tray having a cross-sectional shape in which
The jog is mounted on a fixed base that is placed across the tongues of the tray.
Characterized in that the into box is connected in a mounted state
The wiring system for a free access floor according to claim 1 . 11. A joint box is connected to a terminal portion.
A through hole for inserting the main line
A cover plate is provided to cover the opening surface of the part excluding the fixed base in b.
The wiring system for a free access floor according to claim 10, characterized in that . 12. A joint box fixed to a fixed base.
The feature is that a terminal cover is provided to cover the terminal part of the
11. raised floor wiring <br/> system according to symptoms.