JP2006333597A - System and method for local-area wiring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a local-area wiring system and a local-area wiring method capable of facilitating building a local-area wiring without reducing the effective area of a floor. <P>SOLUTION: This wiring system (mesh wiring system), capable of efficiently installing a horizontal cabling in a building and of gaining high operability after installation, divides a floor in a grid pattern by providing a minimum module for efficiently controlling and operating the floor. Junctions (JD) are placed according to grid divided areas, and an information communication wiring such as a multifilament fiber-optic cable is laid along the sides of the grid divided areas, and then a floor distributor (FD) is connected to the junctions (JD). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a premises wiring system and a premises wiring method that can be used for premises wiring such as power supply and information communication in buildings such as offices and houses.

In recent years, as the range of use of IP networks has increased, conventionally, connection to IP networks has been mainly limited to computer devices. Recently, however, computer peripheral devices such as storage and printers, telephones, etc. Communication equipment such as TV, home appliances such as TV, entertainment equipment such as games, equipment such as air conditioning and lighting, etc. The building itself and various devices are connected to the IP network. The demand, importance, and reliability available for quality are increasing.
On the other hand, there is a great demand for effective use of the floor area in the building where the IP network is provided, and the demand for minimizing the area that is not a living space, that is, does not produce value, is universal in all of houses, offices, stores, etc. is there.

  As a conventional wiring method, a pre-wiring method in which the number of wirings required in advance is predicted and wiring is widely used (see Patent Document). This pre-wiring method prepares the maximum amount of floor wiring board (FD) in advance for all locations based on the maximum number of wiring that is expected to generate future demand in the office, for example. And a communication outlet (TO). In other words, this method is based on the idea of first preparing equipment and wire rods that are not actually used and responding to future changes.

FIG. 9 is an explanatory diagram showing an example of a conventional on-site wiring system, and shows an example in which wiring is efficiently performed in a building using a design and product compliant with the on-site wiring system defined in JIS X5150.
As shown in the figure, the on-site wiring system is composed of a combination of several types of subsystems. The on-site trunk wiring sub-system between the on-site wiring board (CD) 101 and the in-building wiring board (BD) 102, In-building trunk wiring subsystem between the wiring board (BD) 102 and the floor wiring board (FD) 103, and a horizontal wiring subsystem between the floor wiring board (FD) 103 and the communication outlet (TO) 105 are included. Yes.
A floor wiring board (FD) 103 is installed on each floor of a building (building), and is connected to the local wiring board (CD) 101 through the in-building wiring board (BD) 102. In each floor, a large number of communication outlets (TO) 105 are connected from a floor wiring board (FD) 103 via a plurality of branch points (CP) 104, and terminal devices are connected to the respective communication outlets (TO) 105. 106 is connected.
Various devices for controlling the network are centrally arranged on the floor wiring board (FD) 103, and wiring from the floor wiring board (FD) 103 to the communication outlet (TO) 105 is performed using a horizontal wiring subsystem. I do.

FIG. 10 is an explanatory diagram showing an example of floor wiring in a conventional premises wiring system.
As shown in the figure, one floor wiring board (FD) 103 is arranged in one floor 107 and is connected to a plurality of communication outlets (TO) 105 installed in various places in the floor via various cables 108. Has been.
Normally, an equipment room for the floor distribution board (FD) 103 (hereinafter referred to as a LAN room) is provided for each floor in the core of the building or in the living room, or if a large area cannot be secured, a 19-inch rack in the living room And an installation space for the floor wiring board (FD) 103 is provided.
Furthermore, it is a mechanism for wiring from the floor wiring board (FD) 103 to the communication outlet (TO) 105 by using a pre-wiring method using the underfloor space in which a so-called raised floor (upper bottom floor) is arranged.
JP-A-6-70429

However, when the pre-wiring method as described above is applied to an actual building space, there are the following problems.
(1) Disadvantages of uniform wiring A large amount of concentrated wiring to a specific location is very difficult in a limited space when concealed wiring is performed, such as in a raised floor, a ceiling, or inside a wall. In addition, when additional wiring is performed between the floor distribution board (FD) and the communication outlet (TO), the location of the wiring route is also affected, so in cases such as across rooms, walls, etc. In many cases, restrictions are imposed on route surveys and construction work.
(2) Response to new standards It is essential to respond to new information communication standards among the communication technologies that are evolving day by day. However, depending on the wiring medium, the distance is limited, and it is necessary to consider them. In particular, UTP cable, which is a medium frequently used in recent years, has a distance limitation of 100 m or less due to attenuation, and it is necessary to design an IP network taking into account such limitations as securing the shortest cable route and securing the position of the floor wiring board (FD). Yes, it becomes extremely difficult to respond.

(3) Limitation on space utilization The distance from the floor wiring board (FD) to the communication outlet (TO) described above is defined as 100 m, which affects the design and design of buildings. For example, it is desirable to install at least one floor distribution board (FD) every 1,000 m ² . In addition, by preparing an individual room such as a LAN room as a place where the floor distribution panel (FD) is installed, the effective area of the floor is reduced, and there is a demerit as real estate value.
We believe that these limit the design and design of the building, and as a result limit the activities of the people living there. We believe that effective solutions to these limitations will emerge, expanding the possibilities of IP network and space utilization.
(4) Disadvantages caused by burying a large amount of wire In order to lay a large amount of wire in advance, it may take time to maintain and manage various wires in the space for concealed wiring due to physical crossing and interference.
In addition, raising the height of the raised floor to cope with the increasing amount of wiring leads to a difference in level on the floor surface and a lower ceiling height, thereby reducing the comfortability. In the case of a new building, it can be solved by limiting the design, but in the case of renewal of an existing building, etc., it involves a large-scale construction and has a problem.

(5) Securing the floor wiring board (FD) space The amount of LAN room increases as the number of prior wiring estimates increases. In relation to this, when a project such as A1) occurs, there is not enough space to install a floor wiring board (FD) and branch point equipment (CP) in the LAN room. There is a case.
In addition, it is not possible to respond to changes in future usage such as when the occupants of a building are replaced, the floor wiring board (FD) itself becomes unnecessary due to dramatic technological evolution, or when the LAN room is space-saving. There is a problem.
(6) Limitations of operation The demand for IP networks increases, the number of connected nodes increases, the demand for horizontal wiring subsystems increases, and the number of nodes that can be handled by one floor wiring board (FD) becomes enormous. There is no effective means for the increasing amount of wiring. In addition, the increase in the amount of wiring has reached the limit of management, such as searching for one that you want to deal with, such as a defect, from hundreds of operating lines.
The above disadvantages have become a risk for investors and building owners, resulting in a low usability environment from the user side, and an inefficient system from the building management side.

  In addition, the background of the above-described prior wiring system is based on the functional restrictions of information communication equipment used at the branch point in the network at that time (for example, from the same branch point to the same logical network only) This is because the physical wiring and the logical structure of the IP network have to be matched due to the restriction that it cannot be performed. However, in recent years, a technology called virtual LAN (hereinafter referred to as VLAN) has become widespread, and it has become possible to construct an information communication network whose physical configuration and logical structure do not match. You don't have to.

  Therefore, an object of the present invention is to provide a premises wiring system and a premises wiring method capable of easily constructing premises wiring without impairing the effective area of the floor.

In order to achieve the above-mentioned object, the premises wiring system of the present invention corresponds to a floor wiring portion arranged in a floor using an upper bottom floor and a plurality of divided regions divided by dividing the floor. A plurality of relay branching portions disposed in the underfloor space of the upper bottom floor, a plurality of communication outlets disposed in the floor, and the floor wiring portion and the relay branching portion through the underfloor space of the upper bottom floor. And a communication cable wired between the relay branching unit and the communication outlet, and the relay branching unit is equipped with a function of mounting and decreasing communication devices and accessories according to the arrangement of the communication outlets. It is provided.
Further, in the premises wiring method of the present invention, the communication outlet is connected to the floor space of the upper floor floor corresponding to a plurality of divided areas divided by dividing the floor where the floor wiring portion and the plurality of communication outlets are installed. A plurality of relay branching portions having a function of mounting communication devices and accessories so that the number of communication devices and accessories can be increased / decreased according to the layout is arranged, and communication is performed between the floor wiring portion and the relay branching portion through the underfloor space of the upper bottom floor. A cable is wired, and a communication cable is wired between the relay branching unit and the plurality of communication outlets.

  According to the premises wiring system and the premises wiring method of the present invention, a plurality of relay branch portions are arranged in the under floor space of the upper floor floor so as to correspond to a plurality of divided regions dividing the floor, and communication is performed with the relay branch portions. Provide a function to mount communication devices and accessories according to the outlet layout so that the number of communication devices and accessories can be increased or decreased, and route communication cables between the floor wiring section and the relay branch section, and between the relay branch section and multiple communication outlets. As a result, communication equipment and cables that were previously concentrated on the floor wiring section can be distributed using the lower floor space of the upper floor type floor and the relay branch section, and the system can be changed using the relay branch section. Can be easily accommodated, and there is an effect that the on-site wiring can be easily constructed without impairing the effective area of the floor.

The embodiment of the present invention provides a wiring system (herein referred to as a mesh wiring system) that can efficiently install horizontal wiring in a building and can obtain high operability even after installation. That is, in the mesh wiring method, the minimum module for efficiently managing and operating the floor is determined and the floor is partitioned into a lattice shape (here, the partitioned region is referred to as a lattice division region). Then, a junction (JD) serving as a relay branching portion is arranged below the upper floor corresponding to the grid division area, and information communication wiring (for example, an optical multi-core cable, etc.) is provided along the side of the grid division area. And lay the floor wiring board (FD) and junction (JD) installed in the floor wiring section of the LAN room or the like.
Junction (JD) has a configuration in which various network devices are installed inside a junction box and the number of network devices can be easily increased or decreased, and is distributed in each grid division region. And it connects with the wiring laid by the shortest distance from the nearest junction (JD) with respect to the communication outlet (TO) in each lattice division area.
In short, in the present embodiment, a part of network devices (for example, routers, switches, etc.) that have been concentrated on the floor wiring board (FD) in the past are distributed to junctions (JD) arranged in each grid division area. It is possible to solve various problems in the conventional pre-wiring method by providing maintenance operations such as increase / decrease and replacement of network devices for each junction (JD).
In addition, as will be described later, by constructing a junction box adapted to the raised floor and devised in various ways, an on-site wiring system that is extremely effective in improving the efficiency of maintenance operation is provided.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram showing a premise wiring system according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing an example of floor wiring in the premise wiring system shown in FIG. The present embodiment is an example in which wiring is efficiently performed in a building using a design and a product compliant with the premises wiring system defined in JIS X5150.
As shown in FIG. 1, the intra-building wiring system of the present embodiment includes an intra-building trunk wiring subsystem between an intra-building wiring board (CD) 201 and an in-building wiring board (BD) 202, and an intra-building wiring board (BD) 202. And a floor wiring board (FD) 203, and a horizontal wiring subsystem between the floor wiring board (FD) 203 and a communication outlet (TO) 206. A junction recording subsystem between the floor wiring board (FD) 203 and the junction (JD) 204 and a block recording subsystem between the junction (JD) 204 and the communication outlet (TO) 206 are configured.
A floor wiring board (FD) 203 is installed for each floor of a building (building), and is connected to a local wiring board (CD) 201 through a building wiring board (BD) 202. In each floor, a large number of communication outlets (TO) 206 are connected from a floor wiring board (FD) 203 via a plurality of junctions (JD) 204 and branch points (CP) 205, and each communication outlet ( (TO) 206 is connected to the terminal device 207.

In the conventional system shown in FIG. 9, various devices for controlling the network are centrally arranged on the floor wiring board (FD). However, in the system of this embodiment, a router or a switch is provided at the junction (JD) 204. A part of the equipment close to the terminal side is distributed and arranged to simplify the wiring system.
Next, as shown in FIG. 2, one floor distribution board (FD) 203 is arranged in one floor 208, and is installed in each grid division area in the floor via a cable 209 such as an optical multi-core cable. In addition, a plurality of junctions (JD) 204 are connected, and a communication outlet (TO) 206 is connected to each junction (JD) 204 via a branch point (CP) 205.
The wiring from the floor wiring board (FD) 203 to the communication outlet (TO) 206 is wired mainly using the underfloor space of the raised floor (upper floor).

Next, the junction box constituting the junction (JD) 204 will be described.
FIG. 3 is a perspective view showing an outline of the junction box 300.
4 is an explanatory view showing each element of the junction box 300 in this embodiment, FIG. 4 (A) is an upper sectional view, FIG. 4 (B) is a rear view, and FIG. 4 (C) is a front sectional view. 4D is a front view, FIG. 4E is a side sectional view, and FIG. 4F is a side view.
5 to 8 are a perspective view and a sectional view showing each element of the junction box 300. FIG.
The junction box 300 is a box that protects the equipment installed in the junction (JD) 204 of this embodiment from dust such as dust and moisture, and provides convenience in operation. / A device such as an amplifier for a TV signal, a main circuit breaker, a branch circuit breaker, etc. can be housed as a distribution board, and related cables can be passed therethrough.

The junction box 300 includes a leg 310, a chassis 320, a back panel 330, a side panel 340, a front panel 350, a canopy 360, and the like.
The leg part 310 stably supports and supports the four corners of the chassis 320 with respect to the mounting surface under the floor. The leg part 310 is detachable with, for example, a stopper or a screw, and further has a damper function with a rubber material or the like. Those are preferred.
The chassis 320 can be attached with various devices and accessories for junction (an example in which the switch 380 and the fixing bracket 381 are attached is shown in FIG. 4), and various cables can be passed. Yes.
The back panel 330 is a panel that surrounds the back surface of the chassis 320, and has outlets 331 for various cables 370.
The side panel 340 is a panel that surrounds both side surfaces of the chassis 320, and has a vent hole 341 that protects the equipment housed in the box 300 from dust and the like and allows exhaust and intake from the housing equipment. In particular, when temperature management is important, as shown in FIG. 5, it is possible to attach an electric fan 342 to the side panel 340 within the range allowed by the cost.
The front panel 350 is a panel that surrounds the front surface of the chassis 320, and includes a window portion 351 through which the operating status of the equipment accommodated in the box 300 can be confirmed.
As shown in FIG. 4, each panel is supported and fixed to the lower floor of the upper bottom floor by a support portion 390.

The canopy 360 is disposed at the top of each panel and surrounds the upper surface of the box 300. As shown in FIG. 7, the canopy 360 can be opened and closed via a hinge mechanism and can be easily opened and closed during maintenance. It has become.
The canopy 360 can be used as an upper floor panel of a raised floor or can have an independent structure. Although not shown in the figure, it is assumed that there is a monitoring window (not shown) made of an acrylic material or the like that is provided with a key and can be internally monitored from above for ensuring security in operation.
In addition, as shown in FIG. 8, the height of the box is minimized to a size that can accommodate a 1U size of a 19 inch rack standard, and the size of the side panel is changed according to the installation space, and the legs are adjusted. The height can be changed.

The equipment accommodated in such a junction box 300 is configured in the same manner for other infrastructures required in a specific grid division area in the building in addition to equipment and instruments required in the on-site information wiring system. be able to.
In addition, as shown in FIG. 6, the accommodation equipment 321 can be changed by exchanging the attachment that can be fixed to the chassis 320 inside the box 300, and for supplying power to the internal equipment. The OA tap 322 is attached. In addition, a cable clamp and a wiring support panel for accommodating the internal wiring are accommodated.
FIG. 8 shows an example of dimensions of a 19-inch rack accommodation type, which can accommodate a device having a maximum width of 445 mm, a depth of 380 mm, and a height of 45 mm with a margin. It can be fixed to the box using the screw holes for 19-inch racks of installation equipment.
Further, the devices to be stored include devices such as RF / TV signal amplifiers, branching devices, distributors, distribution boards, and the like. The types of cables include, for example, UTP cables (maximum 48; Category 5e type), optical cables (maximum 4; GBIC), power cables (maximum 2).

In the premises wiring system according to the present embodiment as described above, the following effects can be obtained.
(1) The adverse effects of uniform wiring can be eliminated (concentrated wiring at a specific location can be facilitated).
When adding wiring concentrated on a specific grid division area, add the equipment to be installed in the adjacent junction (JD), and then connect the wiring pre-laid from the floor wiring board (FD) to the junction (JD). Use to connect. In addition, by adopting a method of adding wiring extending from the equipment added to the junction (JD) to the lattice section, it is possible to change the raised floor between the floor wiring board (FD) and the junction (JD) without changing it. Wiring can be added.
By using this method, the wiring distance for the terminal device to connect to the communication outlet (TO) is from the floor wiring board (FD) to the communication outlet (TO) still section, from the junction (JD) to the communication outlet (TO). ) And the total wiring amount can be reduced to 1/2 to 1/3.
(2) It becomes easy to respond to the new standard (relaxation of distance restriction).
By using an optical cable for wiring from the floor wiring board (FD) to the junction (JD), it is possible to eliminate the introduction of a new communication standard and a communication distance limit of 100 m or less.

(3) The restrictions on space use can be relaxed.
By adopting optical cables between the floor switchboard (FD) and junction (JD) and reducing the amount of wiring between the floor switchboard (FD) and junction (JD), the distance limitation of 100m and the placement conditions of the LAN room are relaxed. The degree of freedom in design and design is increased.
At the same time, part of the function of the floor distribution board (FD) placed in the LAN room is moved to the junction (JD), so the area of the LAN room can be reduced and the vacant part is changed to a living room. It becomes possible to do.
(4) The manageability in the raised up floor where a large amount of wire is embedded can be improved.
As described above, in the conventional method, a large amount of wiring is laid in the raised floor between the floor wiring board (FD) and the communication outlet (TO), but in this method, the floor wiring board (FD) is connected to the junction ( Since the amount of wiring until JD) is reduced, physical interference and intersection with other wiring materials can be minimized. Thereby, it is possible to suppress the occurrence of a failure due to a change or an additional work in the raised up floor.
When newly installed in a room that does not support the raised up floor, the total amount of wiring can be reduced, so that the raised up floor can be realized with a minimum height.

(5) A floor switchboard (FD) space can be secured (LAN room area can be minimized).
Unlike conventional methods, even if the amount of wiring in the room changes, it is necessary because the number of devices installed at the junction (JD) in the raised-up floor only changes without expanding the LAN room. There will be no significant fluctuations in the floor distribution board (FD) space.
(6) It is possible to improve work efficiency related to wiring (expand the limit of operation).
Conventionally, the node management of the communication outlet (TO), which has been centrally managed by the floor wiring board (FD), is distributed and managed at the junction (JD) in units of each grid division area, and the junction ( JD) -communication outlet (TO) has a short distance, so that fault isolation and re-laying due to the wiring of a specific communication outlet (TO) can be performed using conventional floor wiring board (FD) -communication outlet ( (TO), it is possible to carry out without straddling a raised distance floor of a long distance.

It is explanatory drawing which shows the local wiring system by the Example of this invention. It is explanatory drawing which shows the example of the floor wiring in the premise wiring system shown in FIG. It is a perspective view which shows the outline | summary of the junction box used with the premise wiring system shown in FIG. It is explanatory drawing which shows the component of the junction box shown in FIG. It is a perspective view which shows the component of the junction box shown in FIG. It is a perspective view which shows the component of the junction box shown in FIG. It is a perspective view which shows the component of the junction box shown in FIG. It is a perspective view which shows the component of the junction box shown in FIG. It is explanatory drawing which shows an example of the conventional premise wiring system. It is explanatory drawing which shows the example of the floor wiring in the conventional premise wiring system.

Explanation of symbols

  201 …… Internal wiring board (CD), 202 …… In-building wiring board (BD), 203 …… Floor wiring board (FD), 204 …… Junction (JD), 205 …… Branch point (CP), 206… ... communication outlet (TO), 207 ... terminal equipment, 208 ... floor, 300 ... junction box, 209 ... cable.

Claims (5)

A floor wiring portion arranged in a floor using an upper floor type floor,
A plurality of relay branching portions arranged in the underfloor space of the upper bottom floor corresponding to a plurality of divided areas divided by dividing the floor;
A plurality of communication outlets arranged in the floor;
A communication cable wired between the floor wiring part and the relay branching part through the underfloor space of the upper floor type floor, and between the relay branching part and the communication outlet;
Provided with a function to mount the communication equipment and accessories to the relay branching unit according to the arrangement of the communication outlets,
A premise wiring system characterized by that.   The premises wiring system according to claim 1, wherein the relay branching unit includes a storage box that stores a cable connection unit, a power supply unit, a communication device, and accessories.   The premises wiring system according to claim 2, wherein the storage box includes a cable insertion hole, a vent hole, a viewing window, and a maintenance opening / closing lid.   The premises wiring system according to claim 2, wherein the storage box has a maintenance opening / closing lid on an upper surface, and the maintenance opening / closing lid is integrated with a floor plate of an upper bottom floor. Communication equipment and accessories according to the arrangement of the communication outlet in the floor space of the upper floor type floor corresponding to a plurality of divided areas divided by dividing the floor where the floor wiring section and the plurality of communication outlets are installed A plurality of relay branching units with a function to mount and reduce
Wiring a communication cable between the floor wiring portion and the relay branch portion through the underfloor space of the upper floor floor, and wiring a communication cable between the relay branch portion and a plurality of communication outlets,
A premise wiring method characterized by the above.

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