JPH0795862B2 - On-premises telephone cable wiring method and cable rack therefor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an on-the-premises wiring method for a premises telephone cable and an improvement of a cable rack used therefor.

<Prior art> MDF in the building, mainly for users with a large number of subscribed lines
In order to construct a large-capacity system by centrally installing RT equipment racks (cabinets equipped with remote multiplex transmission equipment) in rooms and information machine rooms, the above-mentioned RT equipment racks were built by the conventional method. Telephone installed by laying the cable rack horizontally from the ceiling surface of the building so that the cable rack can be installed in parallel on the floor surface of the building and facing the upper position of such parallel RT device rack, and laid on the rack. From the main bundle of cables to each RT
It is customary to branch the branch line corresponding to the equipment rack into a bifurcated shape and connect and connect both bundles to the RT equipment rack.

<Problems to be solved by the invention> However, since the main bundle of the above cable is several tens of kilograms and is very heavy, it is supported by a cable rack, so that the rack is a simple ladder type with a horizontal state as a whole. And the horizontal rail is in a fixed state, and the main wire bundle is bound and fixed to this with a binding tool,
Since the bundle of branch lines from the fixed position by the tie to each RT device rack is branched, if it becomes necessary to perform maintenance work from behind on the RT device rack, the RT device rack can be , It is impossible to pull out or push in again so that the back to back is separated from the back of the opponent.

Even if it is possible for a provisional law and a large number of workers, the fixed state by the above-mentioned binding tool must be solved at the time of the work, and then the branch line bundles are crossed and the binding operation is performed again. It is necessary, and it is extremely labor intensive and inferior in workability.

Therefore, in the past, a certain space for maintenance has been secured in advance between the back of each RT device rack and the wall surface of the building, and between the back faces of both RT device racks that should be back-to-back. . As a result, when constructing a large-capacity system, it is impossible to reasonably install as many RT device racks as possible while effectively utilizing the limited floor surface of the building.

<Means for Solving the Problem> The present invention is designed to improve such a problem, and as a result, as a method for wiring a telephone cable on a premises, an RT device rack having a pair of cable inlets on the upper surface is used. Is placed on the floor so that its back surface is in close contact with the wall surface of the building or in close contact with each other back-to-back, and the RT device rack has a fixed width larger than the depth of the RT device rack, and the same RT
A cable rack with a fixed length larger than the frontage of the equipment rack is hung and fixed horizontally from the ceiling of the building so that it faces the upper position of the RT equipment rack. Along the longitudinal direction, from the main bundle of telephone cables that are wired in a cross shape with the cross rail,
When bifurcating a pair of branch line bundles toward the introduction port of the RT device rack, the main line bundles are fixed to the horizontal rails of the cable rack with a binding tool, and the pair of branch line bundles are fixed to each other. The wires are directed downward from different gaps or together from the same gap, and the length of the wires from the binding fixing position in the pair is kept in a relation of changing the length, and the wire length from the fixing position is changed. The RT device rack can be slidably held along the guide bar by slidably holding the middle part of the bundle of long branch lines to a slide guide bar that is fixed horizontally on the cable rack in parallel with the horizontal rail. The main feature of this is that the telephone cable is kept in the wired state and can be pulled out or pushed in along the width direction of the cable rack. In addition, in order to carry out the above method, as a cable rack that is suspended and fixed in a horizontal installation state above the RT device rack, its configuration keeps a certain width larger than the depth of the RT device rack. A pair of vertical frames facing each other and extending to a certain length larger than the frontage of the RT device rack, and a plurality of horizontal frames fixed in parallel between the two vertical frames facing each other at regular intervals. And a plurality of slide guide bars parallel to the horizontal rail at a position lower than the horizontal rail, fixed to the vertical frame at a constant interval larger than the above-mentioned interval between the horizontal rails. The main feature is that the slide hanger for suspending and holding the branch bundle of the telephone cable to be introduced and wired into the RT device rack is slidably engaged with the sli guide bar while being mounted. It is intended.

<Examples> Hereinafter, the details of the present invention will be described with reference to the drawings.
Fig. 5 shows the state of wiring of the telephone cable (C) on the premises, and (RT) is a plurality of RT equipment racks (mounting cabinet for remote multiplex transmission equipment), the size of each of which is, for example, frontage. -Approximately 800 mm x depth-600 mm x height-approximately 800 mm, giving an overall rectangular parallelepiped shape. (11) and (12) are a pair of left and right cable inlets that open on the top surface of each RT device rack (RT), both of which are open to the back side, and the cable is installed from above. The branch line bundle described later in (C) is connected to the introduction state. (RF) is
It is needless to say that the RF device rack (power supply mounting cabinet for the RT device) has a capacity corresponding to the number of subscriber lines of the RT device rack (RT).

The RT device rack (RT) has a plurality of overall layouts, as illustrated in the schematic plan view of FIG. 6, in which the rear surface thereof is in line with the wall surface (13) of the building so that the floor surface of the building is It may be placed in an orderly manner, or it may be placed in a pair of back-to-back rows in a concentrated manner on the floor surface away from the wall surface (13) of the building. In any case, the RT device rack (RT)
The pedestal and free wheels (not shown) can be used to move around on the floor. On the other hand, the RF device rack (R
F) will be installed and fixed on the floor without performing the moving operation.

(R) is one of the above RT device rack (RT) and RF device rack (RF)
In particular, it is a cable rack for wiring on the RT device rack (RT), and as shown in FIGS. 7 to 14, a pair of long vertical frames extending in parallel and maintaining a constant width (W). (14) and a certain distance from each other (P1)
From a plurality of horizontal rails (15) that are connected and fixed every other parallel, they are frame-integrated into an overall ladder shape in plan view.

That is, each of the horizontal rails (15) is made of a hollow metal square pipe material, and both front and rear ends thereof are welded and integrated to both vertical frames (14) made of a channel-type steel material. Then, such a cable rack (R) has an appropriate height so as to face the upper position of the RT device rack (RT) in the parallel state while keeping a constant cable movement guide gap (H). In a horizontally installed state, it is suspended and fixed from the ceiling surface (17) of the building by a plurality of suspension columns (16), one each in front and behind, as shown in FIG.

As the main wire bundle (18) of the telephone cable (C) crosses the cross rail (15) as shown in FIGS. 1 to 5, it is stable along the longitudinal direction (left-right direction) of the cable rack (R). A pair of branch wire bundles (19) (20) that are laid and branch off from the main wire bundle (18) in a bifurcated shape are introduced into the introduction ports (11) (12) of the RT device rack (RT). It is supposed to be done.

In this respect, in the example shown in the figure, the suspension column (16) of the cable rack (R) is used as a turn bag so that the movement guide gap (H) can be adjusted to a larger or smaller size. Of course, it is also possible to embody the hanging column (16) from an alternative mechanism.

In the case of the example shown in the figure, the cable rack (R) is a unit body corresponding to a total of three first to third RT device racks (RT-1) (RT-2) (RT-3), and its entire length ( L) is sized as a constant of about 2400 mm, which is equivalent to the total of three, in relation to the frontage of each RT device rack (RT), as suggested from FIG. (W) has a dimensional relationship with the depth of the RT device rack (RT), and is set to about 1000 mm, which is larger than the depth.

The reason why the large size of the constant width (W) is set is that by creating a difference width of about 200 mm at both sides of the cable rack (R), the both sides of the difference width are first and third. As shown in the figure, the wiring allowance area (S1) of the main wire bundle (18) is set, and the central portion of about 600 mm remaining between them is used as the wiring allowance area (S2) of the branch wire bundles (19) (20). C)
This is a point that allows for the orderly and smooth wiring.

However, as long as the wiring allowable area (S2) of the branch bundles (19) (20) is dimensioned wider than that of the main bundle (18), the wiring allowable area (S1) of the main bundle (18) is As shown in FIG. 4, it may be generated only on one side of the cable rack (R).

Further, the cable rack (R) shown in the figure has a total of nine horizontal rails (15), which are arranged at regular intervals (P
1) is about 267 mm, and three horizontal rails (15) each form a group unit (G) corresponding to each RT device rack (RT), and the group unit (G) advances from the power supply. In relation to the direction (A), the first to third units (G-1) (G-) corresponding to the first to third RT device racks (RT-1) (RT-2) (RT-3) are sequentially arranged from the front side. 2) They are in a relationship of being lined up as (G-3).

Moreover, the first to third units (G-1) (G-2) (G-
In order to form each piece of 3), the first to third horizontal rails (15a) (15b) (15) are also sequentially arranged from the front side in the wiring traveling direction (A).
In c), the first horizontal rail (15a) and the third horizontal rail (15c) have a pair of left and right inlets (11) and (12) that open on the upper surface of each RT device rack (RT), and a second horizontal rail (15). As shown in the figure, it is in a relational position in which it is substantially aligned in the front view, and the branch bundles (19) (20) of the cable (C) are connected to the inlets (11) (12) from almost directly above it.
Are introduced smoothly.

Then, the first to third units (G-1) (G-2) (G-
At the position directly below the first horizontal rail (15a) that forms each of 3),
The slide guide bar (2
A total of 3 pieces of 1) are fixed and horizontally mounted on both vertical frames (14) of the cable rack (R) itself. It goes without saying that the mutual interval (P2) between the slide guide bars (21) adjacent to each other is larger than the constant interval (P1) between the horizontal rails (15).

That is, as is clear from FIGS. 9 to 13, each slide guide bar (21) is made of a metal round bar, and the threaded portions at both ends of the slide guide bar (21) are a pair of front and rear protruding integrally from the lower surface of the vertical frame (14). The cable rack (R) is inserted into the receiving metal fitting (22) and is fastened by screwing from the outside thereof to the bag nut (23).
It is attached and fixed to. Reference numeral (24) shows a fixing bolt of the receiving metal fitting (22) to the vertical frame (14).

(25) is a cable slide hanger preliminarily inserted into and engaged with each slide guide bar (21), and can slide along the guide bar (21). And
For this purpose, a halfway tie of the branch bundle (19), which will be described later, is connected and held in a suspended state. The slide hanger (25) shown in the figure is composed of a single ring-shaped carabiner, but it may be embodied by a plurality of chains or hooks connected to each other.

Also, in the case of the example in the figure, via the slide hanger (25),
By suspending and holding the branch line bundle (19) of the cable (C) on the slide guide bar (21), the branch line bundle (1)
Although the sliding action described later in 9) is smoothed, as long as the smoothness is achieved, the use of the slide hanger (25) is omitted, and the midway tie of the branch bundle (19) is directly called. , May be engaged with the slide guide bar (21) in a suspended state.

As long as the slide guide bar (21) is in a relational position substantially aligned with the introduction port (11) of the branch bundle (19), the slide guide bar (21) is moved to each group unit (G-1) (G-2) (G-). It does not matter even if the first horizontal rail (15a) in 3) is fixed and horizontally mounted at a position slightly offset to the left or right of the first horizontal rail (15a).
In other words, the slide guide bar (21) uses this as a cross rail (15).
It is not necessary to install it directly under the position.

<Operation> When wiring the telephone cable (C) to the RT device rack (RT) using the cable rack (R) as described above, for example, a plurality of RT device racks (RT) are connected. The cable rack (R) is placed on the floor so that its rear surface is in close contact with the wall surface (13) of the building, and the cable rack (R) faces the upper surface with a constant movement guide gap (H). It is suspended from the ceiling surface (17) and fixed horizontally.

Therefore, under such a preparatory condition, the telephone cable (C) is laid from the power source toward each RT device rack (RT) in the wiring advancing direction (A) shown by the arrow in FIGS. In this case, the RT device rack (RT) should be kept away from the wall surface (13) of the building at that time, and should be kept in the temporary pull-out state as shown in Fig. 15 as the maximum forward pull-out position. In addition, the main wire bundle (18) of the cable (C) is extended along the wiring allowable area (S1) of the cable rack (R), and is once turned into a smooth U-turn shape in the course of the wiring progress. This allows the cable rack (R) to be positioned almost on the longitudinal center line (Y-Y), and on the center line (Y-Y), the horizontal rail (1) of the cable rack (R) can be formed.
The main wire bundle (18) is bound and fixed to the 5) with the binding tool (26).

Speaking of the selection of the horizontal bar (15) to be tied up, now it is the first
Assuming that the 1RT device rack (RT-1) is the wiring target, the main wire bundle (18) is as shown in FIG.
To the second cross rail (15b) in the second group unit (G-2) corresponding to the second RT device rack (RT-2) on the front side in the wiring traveling direction (A), the above-mentioned binding tool ( 26) and tie them together to integrate them.

Next, the main wire bundle (18) is moved toward the cable introduction ports (11) (12) of the first RT device rack (RT-1), which is the wiring target, while using the fixed position of the tie tool (26) as a reference. ) For branching the branch wire bundles (19) (20) in a bifurcated manner from
The one branch wire bundle (20) is, as suggested from FIG. 2, the first cross rail (15a) forming the second group unit (G-2) of the cable rack (R) and its wiring. The first group unit (G-) located on the front side in the traveling direction (A).
1) The third horizontal rail (15c) and the third horizontal rail (15c) in the first group unit (G-1) and the second horizontal rail (15c) in the first group unit (G-1)
Through the mutual gap with the horizontal rail (15b), the wire is bent in a diagonally downward direction, and the wiring target is the first RT device rack (R
Introduce wiring to the inlet (12) of T-1) in a hanging manner.

Further, the other bundle of branch lines (19) is the first bundle (15) forming the second group unit (G-2) as shown in FIG.
After moving to the upper part of a), the first horizontal rail (15a) in the second group unit (G-2) continues.
Through the mutual gap between the third horizontal rail (15c) forming the first group unit (G-1) and the one branch line bundle (2
Bend it diagonally downwards earlier than 0) and direct it to a different inlet (1) of the 1st RT device rack (RT-1), which is the wiring target.
The midway part of the branch bundle (19) which advances toward 1) is bound by a tie tool (27) so as not to be dissociated, and the first cross rail (15) forming the first group unit (G-1).
From the slide guide bar (21) located directly under a) to the hanging slide hanger (25), the branch wire tool (19).
It is suspended by connecting the tying tools (27) of the other, and under the stable suspended and held state, the other bundle of bundles (19)
To the corresponding inlet (11) of the first RT device rack (RT-1),
After all, the lead-in wiring is performed in a drooping manner.

In such a wiring state of the cable (C) to the first RT device rack (RT-1), when viewed from the front as shown in FIG. 2, a branch line bundle branched from the main line bundle (18) into a forked shape. (19) (20) is in a positional relationship substantially aligned with the left and right pair of inlets (11) (12) opening on the upper surface of the first RT device rack (RT-1), and when viewed from a plane Both the main line bundle (18) located on the longitudinal center line (Y-Y) of the cable rack (R) to the branch line bundles (19) and (20) are as shown by the chain lines in FIGS. Also, only toward the front side, a smooth arc curve is projected.

Further, with respect to the fixed position of the main wire bundle (18) by the binding tool (26) as a reference, in terms of the wiring length relationship between the two branch wire bundles (19) (20) which continue to move in the direction of the arrow (A), The other bundle of branch lines (19) suspended by the hanger (25) on the slide guide bar (21) of the cable rack (R) is longer than the other bundle of branch lines (20). The length of the wiring from the fixed position is changed in length.

The wiring method as described above is applied to the second and third RT device racks (RT-2) (R
As for T-3), the same procedure is performed in the same manner, and a plurality of RT device racks (RT) are attached as shown in FIGS.
It is pushed so as to be in close contact with the wall surface (13) of a sluggish building, and it is used as it is in the pushed state. In that state of use, as indicated by the solid lines in FIGS. 3 and 4, the longitudinal center line (Y-Y) of the cable rack (R).
From the fixed reference point of the main wire bundle (18) located on the upper side, both of the branch wire bundles (19) and (20) are curved in a smooth arc shape only toward the rear side in plan view. .

When it becomes necessary to perform maintenance work on the RT device rack (RT) from behind, pull it out forward as shown in Figs. 15 and 16 so as to separate it from the wall surface (13) of the building. Manipulate. As described above, when the RT device rack (RT) is placed in a two-row state in which the pairs are back-to-back, pull the RT device rack (RT) forward so that the backs are separated from each other. Of course to operate.

That is, when the first RT device rack (RT-1) is pulled out to the front in the state of the cable wiring to the first RT device rack (RT-1) described above, the cable rack (R)
The other branch line bundle (19) is slidably suspended and engaged with the slide guide bar (21) through the slide hanger (25), so that the branch line bundle (19) is dissociated or crossed. Without causing any trouble, the slide guide bar (21) smoothly slides, and as a result, the RT device rack (RT) can be pulled out and moved with high efficiency while keeping the wiring state for the RT device rack (RT).

At that time, the other one of the bundles of branch lines (20) may be hung on the slide guide bar (21), but if this is done, the movements of both bundles of branch lines (19) (20) will restrain each other, and rather RT The device rack (RT) cannot be smoothly pulled out and operated. Therefore, the short bundle of branches (20) on the one hand keeps it free, as it were, for the cable rack (R).

Also, from the binding and fixing reference point of the main wire bundle (18), one short branch wire bundle (20) due to its wiring length relationship is suspended from the slide hanger (25), and conversely the other long branch wire bundle (19).
If the cable rack (R) is kept free, the branch bundle (20) on one side is regulated by the slide hanger (25) with a sharp arc curvature, resulting in a smooth sliding action. First of all, the other long branch bundle (19) is likely to cause dissociation or intersection.

Furthermore, since the main wire bundle (18) of the cable (C) is bound and fixed by the tying tool (26) almost on the longitudinal center line (Y-Y) of the cable rack (R), it is a reference point or Both branch line bundles (19) (20) with symmetrical fulcrums
Turns into a smooth circular arc inversion in the front-rear direction, and as a result, the RT device rack (RT) can be easily pulled out or pushed in.

Also, if the above-mentioned movement guide gap (H) between the cable rack (R) and the RT device rack (RT) is at least 500 mm in the numerical relationship of the above-mentioned embodiment, the RT device can be secured. The movement of both branch line bundles (19) (20) at the time of the push-in or pull-out operation of the rack (RT) can be further smoothed.

First, as a method of overhead wiring using a cable rack (R), as is particularly clear from FIGS. 1 to 4 and 15, while branching from the main wire bundle (18) of the telephone cable (C), The branch line bundle (20) of the cable rack (R) in the first group unit (G-1) of the second horizontal rail (15b) and the third horizontal rail (1).
5c) is bent in a diagonally downward direction from the mutual gap and is introduced into the introduction port (12) of the first RT device rack (RT-1), which is the wiring target, and the other branch line bundle ( 19) is described above from the mutual gap between the third horizontal rail (15c) in the first group unit (G-1) and the first horizontal rail (15c) in the second group unit (G-2). One branch line bundle (2
Although it is bent and directed diagonally downwards earlier than 0), it is introduced into another introduction port (11) of the first RT device rack (RT-1) which is the wiring target, Or first
As suggested by the modified examples of FIGS. 17 to 21 respectively corresponding to FIG. 15, one of the branch line bundles (20) is the same as the other branch line bundle (19), and the first group in the cable rack (R). Through the mutual gap between the third horizontal rail (15c) in the unit (G-1) and the first horizontal rail (15c) in the second group unit (G-2), so to speak, bends obliquely downward. You may point it.

That is, the other branch line bundle (19), which becomes longer in relation to the wiring length, is slidably suspended from the binding and fixing reference point of the main wire bundle (18) by the slide guide bar (21) of the cable rack (R). As far as it can be lowered, when the pair of branch line bundles (19) (20) are distributed and deflected to the lower side of the cable rack (R), even if they are individually passed through different gaps of the horizontal rail (15). Or, even if they pass from the same gap, they may pass together.

When adding an RT device rack (RT), one unit unit cable rack (R) with the above-mentioned fixed length (L) is used.
Can be added and integrated by using a connecting plate (28) as shown by a chain line in FIG. The vertical frames (14) of the cable rack (R) are butted against each other, and a pair of connecting plates (28), which are applied so as to extend over both sides thereof, are connected to both cable racks (R) by connecting bolts (29). Just fix it. It is needless to say that in the replenished and connected state, the fixed intervals (P1) where the horizontal rails (15) are spaced apart from each other and the slide guide bar (21) are kept even in the permuted state as a whole.

<Effects of the Invention> As described above, according to the present invention, as a method for wiring on-premises telephone cables, an RT device rack (RT) having a pair of cable inlets (11) and (12) on the upper surface is used. Fixed to the wall surface (13) of the building or in a state where they are in close contact with each other back-to-back, and are placed on the floor, and have a constant width (W) larger than the depth of the RT device rack (RT).
And the cable rack (R), which also has a fixed length (L) larger than the frontage of the RT device rack (RT), facing the upper position of the RT device rack (RT) above the ceiling of the building. Surface (17)
From the main line bundle (18) of the telephone cable (C), which is hung and fixed in a horizontal installation state and which is wired along the longitudinal direction of the cable rack (R) in a cross shape with the horizontal rail (15). When branching a pair of branch line bundles (19) (20) from the inlet to the inlet (11) (12) of the RT device rack (RT) in a bifurcated shape, the main line bundle (18) is connected to the cable rack ( R) side rail (15)
The pair of branch line bundles (19) and (20) are bent and directed downward from the different gaps of the cross rail (15) separately or together from the same gap and directed downward. The wire length from the above-mentioned binding position in the pair is kept in a relationship of changing the length, and the midway part of the branch bundle (19) where the wire length from the above-mentioned fixing position becomes long is parallel to the horizontal rail (15). As a condition, the slide guide bar (21) fixed and laterally mounted on the cable rack (R)
By suspending and holding the RT device rack (RT) slidably along the guide bar (21), the RT device rack (RT) is kept in the wiring state of the telephone cable (C) for the RT device rack (RT), and the cable rack (R) is kept. Since it is designed so that it can be pulled out or pushed in along the width direction of the RT, the RT device rack (RT) is closely attached to the wall surface of the building, and the RT device rack (RT) is placed back-to-back, and the RT device rack (RT) is placed close to each other. As much as possible of the equipment racks (RT) can be installed centrally in a space-saving manner on the floor surface, nevertheless the maintenance work from the rear of each RT equipment rack (RT) can be performed extremely efficiently. is there.

In that case, in particular, place both sides or one side of the cable rack (R) wider than the depth of the RT device rack (RT) into the main wire bundle (18).
Is set as the wiring allowable area (S1), and the remaining portion of the cable rack (R) is also wider than this branch wire bundle (19) (2).
0) Set the wiring allowable area (S2) as the wiring allowable area (S2), and temporarily change the main wire bundle (18) that advances along the wiring allowable area (S1) of the main wire bundle (18) into a U-turn shape. Allows the cable rack (R) to have a substantially longitudinal center line (Y
-Y) and then bind the main wire bundle (18) to the horizontal rail (15) of the cable rack (R) with the tie tool (26) on the longitudinal center line (Y-Y). For example, the main line bundle (18) and the branch line bundles (19) (20) of the telephone cable (C) can be arranged in an orderly and rational manner with respect to the cable rack (R) without fear of crossing or dissociation. And the longitudinal center line (Y) of the cable rack (R).
-Y) With the binding and fixing position of the main wire bundle (18) as the reference point or symmetry fulcrum, the branch wire bundles (19) and (20) can be turned in a smooth circular arc inversion in the front-rear direction, resulting in RT The device rack (RT) can be pulled out and pushed in more smoothly and stably.

In order to carry out the above method, the cable rack (R) is hung and fixed horizontally above the RT device rack (RT) so that the cable rack (R) has a larger size than the depth of the RT device rack (RT). And a pair of vertical frames (14) that face each other with a constant width (W) and extend to a constant length (L) that is larger than the frontage of the RT device rack (RT). ), And a plurality of horizontal rails (15) fixed in parallel at fixed intervals (P1) between them, and the horizontal rails (1) are positioned below the horizontal rail (15).
5) Slide guide bars (21) parallel to the vertical frame (14) are fixed at a fixed interval (P2) that is larger than the adjacent interval (P1) of the horizontal rail (15). A slide hanger (25) for suspending and holding a branch line bundle (19) of a telephone cable (C) to be introduced and wired to the RT device rack (RT) is provided along with the slide guide bar (21). Since it is slidably engaged with the cable rack (R), it is remarkably simple as a necessary configuration of the cable rack (R), and the mass production effect can be maximized as a device to be installed in large quantities of this kind.

In particular, in order to integrate the cable rack (R) into a frame, a pair of vertical frames (14) are made of a steel material of a channel type facing each other, each of the horizontal bars (15) is made of a metal hollow square pipe material, and a slide guide bar ( If the slide guide bar (21) is engaged with the slide hanger (25) having a preliminarily single ring shape so that the slide hanger (21) is formed from a metal round bar material as a whole, Heavy telephone cable (C)
The supporting strength of the slide bar (21) can be further increased, and the slide hanger (25) that is a pre-shaped ring type does not fall off the slide guide bar (21) of the round bar. While maintaining the proper state, the sliding action can be performed extremely smoothly and stably, and there is an effect that durability can be improved.

Furthermore, the plurality of horizontal rails (15) in the cable rack (R) are arranged in order along the wiring traveling direction (A) of the telephone cable (C) in the order of the first to third horizontal rails (15a) (15b) (15c). Group unit (G-1) (G-2) consisting of a total of 3
As the (G-3), the vertical frames (14) are fixed and horizontally laid between the two facing each other, and the first horizontal rail (15a) in the group unit (G-1) (G-2) (G-3). And the third horizontal rail (15c) are respectively positioned corresponding to the cable inlets (11) (12) of the RT device rack (RT), and are parallel to the position directly below the first horizontal rail (15a). If the slide guide bar (21) is fixed horizontally, the branch line bundle (19) for the introduction port (11) (12) of the RT device rack (RT)
Wiring work of (20) can be done easily and orderly without waste of its length, and each of the horizontal rails (15) has a special function and function, so that a plurality of them can be installed in parallel reasonably. You can do it.

In other words, due to the corresponding positional relationship between the RT device rack (RT) and the cable rack (R), the group unit (G-1) (G
-2) Connect the first horizontal rail (15a) in (G-3) to the long branch line bundle (1
For positioning the slide guide bar in 9), the second horizontal rail (15b) is also used for binding the main wire bundle (18), and the third horizontal rail (15c) is bent downward of the short branch wire bundle (20). Each of them can be used as a guide for dispatching, and it can be said that it is more and more practically useful in that sense.

[Brief description of drawings]

FIG. 1 is a perspective view showing a wiring state of a telephone cable on a cable rack with respect to a cable rack, FIG. 2 is an enlarged front view showing the cable rack in a broken manner, and FIG. 3 is a plan view schematically showing the wiring state. FIG. 4 is a plan view showing a modified example of FIG. 3, FIG. 5 is an enlarged side view of FIG. 1, and FIG. 6 is a plan view schematically showing an arrangement layout of an RT device rack, FIGS. Is a plan view and a front view showing a cable rack extracted, FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG. 8, and FIG. 10 is a side view showing a slide guide bar thereof extracted. , Fig. 12 is a front view and a bottom view of the slide guide bar, in which the brackets are also extracted, Fig. 13 is a sectional view taken along the line 13-13 of Fig. 11, and Fig. 14 is a front view showing the suspended state of the cable rack. Fig. 15 is a perspective view showing the pulling action state of the RT device rack corresponding to Fig. 1, and Fig. 16 is its 15th view. An enlarged side view of corresponding to Figure 5. FIG. 17 is a perspective view showing a modification of the wiring state corresponding to FIG. 1, FIG. 18 is an enlarged front view showing the cable rack of FIG. 17 by breaking, and FIG. 19 is the wiring state of FIG. FIG. 20 is a schematic plan view, FIG. 20 is a plan view showing a modified example of FIG. 19, and FIG. 21 is a perspective view showing a pulling action state of the RT device rack corresponding to FIG. (A) …… Wiring direction (C) …… Telephone cable (R) …… Cable rack (RT) …… RT device rack (RF) …… RF device rack (H) …… Movement guide gap (S1)… Allowable wiring area for main bundle (S2) Allowable wiring area for branch bundle (11) (12) Cable inlet (14) Vertical frame (15) Horizontal cross (16) Hanging Lowering column (18) …… Main line bundle (19) (20) …… Split line bundle (21) …… Slide guide bar (25) …… Slide hanger (26) (27) …… Binding tool

Claims (5)

[Claims] 1. An RT device rack (RT) having a pair of cable inlets (11) (12) on its upper surface, such that its rear surface is in close contact with a wall surface (13) of a building or each pair thereof is back to back. As a state of close contact, it is placed on the floor and fixed width (W) larger than the depth of the RT device rack (RT).
And the cable rack (R), which also has a fixed length (L) larger than the frontage of the RT device rack (RT), facing the upper position of the RT device rack (RT) above the ceiling of the building. Surface (17)
From the main line bundle (18) of the telephone cable (C), which is hung and fixed in a horizontal installation state and which is wired along the longitudinal direction of the cable rack (R) in a cross shape with the horizontal rail (15). When branching a pair of branch line bundles (19) (20) from the inlet to the inlet (11) (12) of the RT device rack (RT) in a bifurcated shape, the main line bundle (18) is connected to the cable rack ( R) side rail (15)
The pair of branch line bundles (19) and (20) are bent and directed downward from the different gaps of the cross rail (15) separately or together from the same gap and directed downward. The wire length from the above-mentioned binding position in the pair is kept in a relationship of changing the length, and the midway part of the branch bundle (19) where the wire length from the above-mentioned fixing position becomes long is parallel to the horizontal rail (15). As a condition, the slide guide bar (21) fixed and laterally mounted on the cable rack (R)
By suspending and holding the RT device rack (RT) slidably along the guide bar (21), the RT device rack (RT) is kept in the wiring state of the telephone cable (C) for the RT device rack (RT), and the cable rack (R) is kept. A method for wiring on-premises telephone cable, characterized in that it can be pulled out or pushed in along the width direction of the premises. 2. The both sides or one side of the cable rack (R) wider than the depth of the RT device rack (RT) is used as the wiring allowable area (S1) of the main wire bundle (18), and the cable rack (R) is also used. )
The remaining part of the main line is set as the wiring allowable area (S2) of the branch line bundles (19) (20) wider than this, and the main line traveling along the wiring allowable area (S1) of the main line bundle (18). The bundle (18) is once turned into a U-turn so that the cable rack (R) has a substantially longitudinal center line (Y).
-Y) and then bind the main wire bundle (18) to the cross rail (15) of the cable rack (R) by the binding tool (20) on the longitudinal center line (Y-Y) and fix it. The method of wiring on-premises telephone cable according to claim 1, characterized in that. 3. A cable rack (R), which is suspended and fixed horizontally above the RT device rack (RT), as a cable rack (R), having a constant width (W) larger than the depth of the RT device rack (RT). And a pair of vertical frames (1) that face each other and extend to a constant length (L) larger than the frontage of the RT device rack (RT).
4) and a plurality of horizontal rails (15) that are fixed horizontally across the two vertical frames (14) facing each other at regular intervals (P1), and are more than the horizontal rails (15). In the lower position, the cross rail (1
5) Slide guide bars (21) parallel to the vertical frame (14) are fixed at a fixed interval (P2) that is larger than the adjacent interval (P1) of the horizontal rail (15). A slide hanger (25) for suspending and holding a branch line bundle (19) of a telephone cable (C) to be introduced and wired to the RT device rack (RT) is provided along with the slide guide bar (21). Cable rack for on-the-premises wiring of premises telephone cables, which is slidably engaged to the inside. 4. A vertical type frame (14) made of a pair of steel members facing each other, each of the horizontal rails (15) made of a hollow metal pipe, and a slide guide bar (21) made of a round metal rod. 4. A telephone cable according to claim 3, wherein the slide guide bar (21) is formed and engaged with a slide hanger (25) having a predetermined single ring shape so as to be inserted therethrough. Cable rack for overhead wiring. 5. A plurality of horizontal rails (15) are provided with a telephone cable (C).
Group units (G-1) (G-2) (G-) each consisting of a total of three first to third horizontal rails (15a) (15b) (15c) arranged in order along the wiring advancing direction (A). 3) As a result, the vertical frames (14) are fixed and horizontally laid between the two, and the first horizontal rail (15a) and the third horizontal rail (15a) in the group unit (G-1) (G-2) (G-3) The horizontal rail (15c) is positioned corresponding to each of the cable introduction ports (11) (12) of the RT device rack (RT), and a slide guide parallel to the first horizontal rail (15a) is provided directly below the first horizontal rail (15a). The cable rack for overhead wiring of a premises telephone cable according to claim 3, characterized in that the bar (21) is fixed horizontally.