JPH06245345A - Cable wiring structure - Google Patents

Abstract

PURPOSE:To provide a novel cable wiring structure for facilitating the wiring work and modification thereof while saving the material and manpower. CONSTITUTION:The wiring structure 10 comprises a hanging bolt 12 secured to a ceiling slab E, a messenger wire 14 held by the hanging bolt, a series of cable supporting sleeves 16 supported by the messenger wire while penetrating through the messenger wire, and a cable 18 penetrating through the cable supporting sleeve and supported on the bottom thereof. The cable supporting sleeves can be coupled vertically in parallel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable wiring structure, and more particularly to a cable wiring structure suitable for cable wiring work of buildings such as buildings and factory buildings, especially indoor cable wiring work. .

[0002]

2. Description of the Related Art Conventionally, indoor cable wiring work in buildings such as buildings and factory buildings has been performed mainly by a cable wiring structure as shown in FIG. That is, as shown in FIG. 5 (a), a large number of electric conduits A are arranged in parallel in a plane, and they are supported by a horizontal supporting member B, and the supporting member B is suspended from a fixed end by a hanging bolt. A wiring structure in which the cable supports are hung to form cables, and the cables are passed through the conduit tubes A. As shown in FIG. 5B, a planar cable rack C having a lattice structure is hung from the fixed end with hanging bolts. The wiring structure in which the cables are laid and the cables are laid on the cable rack C, and as shown in FIG. 5C, the planar cable tray D is hung from the fixed end by hanging bolts, and the cable tray is laid. It is a wiring structure in which a cable is laid on D.

[0003]

The above-mentioned wiring structure that has been conventionally adopted as a standard construction method has been required to be improved in the following points. First, the work of laying conduits, cable racks, or cable trays requires a lot of wiring material, manpower, and long construction time because the wiring structure is continuous and complicated. Therefore, the construction cost was high. Secondly, when a change occurs in the wiring work and a cable is additionally inserted or when the cable is branched from the middle of the cable, the conventional wiring structure uses a support member such as a conduit for the change work or the branch wiring. It was actually extremely difficult to carry out the modification work or the branch wiring work unless the margin for the work was estimated in advance. Thirdly, since the conventional wiring structure has a configuration in which the cables are arranged on a plane, a large space is required inside the building in order to secure the wiring route of the cables. Therefore, there is a problem in that it is necessary to make the space inside the building wider by that amount, which increases the construction cost of the building.

In view of the above-mentioned problems, an object of the present invention is that the space required for the cable wiring structure is small, it can be easily constructed with a small amount of material and manpower, the construction change can be easily followed, and the branch wiring is easy. Another object is to provide a novel cable wiring structure.

[0005]

In order to achieve the above object, a cable wiring structure according to the present invention is an indoor cable wiring structure in which a supporting member provided on a cable wiring path and a supporting member supported by the supporting member. It is characterized in that it is composed of a plurality of cable support sleeves arranged in a separated state along the cable wiring path and a cable extending through the cable support sleeve.

In the present invention, the cable includes not only a so-called cable but also an electric wire in a wide range. The support member used in the present invention is a member that is located at the uppermost portion of the cable wiring structure and supports a cable support sleeve for passing a cable, and is, for example, a linear body, an extruded material, a mold material, or a rail. Etc. are suitable, but it is also possible to use a part of the structure of the building, such as a beam. The supporting member is not particularly limited in material and sectional shape as long as it can withstand the suspension load of the cable and the cable supporting sleeve in strength. Further, the number of supporting members provided on the cable wiring route may be only one, or may be divided and provided. The supporting member is basically supported by a supporting member fixed to the building and is arranged along the wiring route of the cable. The support tool is, for example, a suspension bolt that has one end fixed to a building and the other end suspends and supports the support member, or a support fitting that is driven into a wall and puts the support member thereon to support the support member. In this cable wiring structure, the cable wiring structure can take an arbitrary route.

The cable supporting sleeve is a supporting member for penetrating the cable and supporting the penetrating cable at the bottom, and a hollow short tube having a length of 10 cm to 100 cm is preferable. Further, the cable support sleeve may be used by being connected vertically by a simple conventional engaging means. To support the cable support sleeve with the support member,
For example, there are a method of supporting the supporting member by penetrating the cable supporting sleeve, a method of engaging the supporting member with a known engaging means on the upper side of the cable supporting sleeve, and supporting the supporting member.

The length and spacing of the cable support sleeves are determined by the mechanical characteristics such as the rigidity of the supported cables and the weight, and the cross-sectional area of the hollow portion is determined by the wire diameter and the number of the supported cables. . The material of the cable support sleeve is not particularly limited, and may be made of metal or synthetic resin, but synthetic resin is preferable for weight reduction. Furthermore, there is no restriction on the type of synthetic resin.

The cross section of the cable support sleeve may have a circular shape, an elliptical shape, a triangular shape, a polygonal shape or the like, but a circular shape is preferable from the viewpoint of easy cable passage. The shape is not particularly limited as long as it is cylindrical, but a smooth tube or a corrugated tube is preferable, and a corrugated only inner surface may be used. Cable wireability, load bearing capacity to support cables,
Further, in consideration of positional stability when the sleeve is suspended by a messenger wire, a tubular sleeve with internal and external corrugations is particularly desirable. Further, it is preferable to chamfer both end faces of the cable support sleeve so as not to damage the cable when the cable is passed.

[0010]

To construct this cable wiring structure, a cable supporting sleeve may be attached to a supporting member provided on the cable wiring path at appropriate intervals, and the cable may be routed there. When it is necessary to add a cable due to a change in construction, another cable supporting sleeve can be connected under the cable supporting sleeve to add a cable passage, and the added cable can be passed therethrough. Further, when the cable is branched, the cable can be easily branched from the exposed portion of the cable between the cable support sleeve and the cable support sleeve. Furthermore,
A separate cable wiring structure for branch wiring can be added below the wiring structure of the main cable to easily secure the passage of the branch cable.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the accompanying drawings. Example 1 FIG. 1 is a schematic structural diagram of a first example of a wiring structure according to the present invention, which is a wiring structure laid in a space between a concrete ceiling slab E and a ceiling plate F of a building. 10 is shown. 2 is a sectional view taken along the axis of a cable support sleeve (hereinafter, simply referred to as a sleeve for simplicity) used in the first embodiment, and FIG. 2A is a sectional view of a smooth tube type sleeve, FIG. 2B is a sectional view of the corrugated tubular sleeve.

As shown in FIG. 1, the wiring structure 10 includes a suspension bolt 12 fixed to a ceiling slab E, and a suspension bolt 1.
Messenger wire 14 supported by 2
And a sleeve 16 which is pierced by the messenger wire 14 and is supported by the messenger wire 14 that has penetrated, and a sleeve 16 which penetrates the sleeve 16.
6 and a cable 18 supported at the bottom. Although two cables 18 are illustrated in FIG. 1 for convenience, the number of cables 18 need not be two, and a desired number of cables can be wired.

The suspension bolt 12 is fixed to the ceiling slab E by inserting its upper end into the ceiling slab E, while its lower end has a hook shape, and the messenger wire 14 is suspended and supported by the hook portion. ing.
The messenger wire 14 is a metal wire rod having a relatively large rigidity that functions as a support member that supports the sleeve 16, for example, a steel wire rod. The messenger wire 14 is disposed along the cable wiring path, is supported by being suspended by the suspension bolts 12 at appropriate intervals, and is fixed in a state of being pulled from both ends so as to maintain a tensioned state. .

As shown in FIG. 2, the sleeve 16 is a synthetic resin hollow short tube having a length of 10 cm to 100 cm. Both ends 17, 17 are formed in a bell shape with an enlarged cross-sectional area toward the outside in order to facilitate the passage of the cable, and are chamfered so that the cable is not damaged during passage. It has been subjected. As the sleeve 16, a smooth tube type sleeve as shown in FIG. 2A is generally used, or a corrugated tube type sleeve as shown in FIG. 2B is used. Further, the corrugated tubular sleeve may be corrugated only on the inner surface. Conductivity, cable 18
Considering the load bearing capacity for supporting the sleeve 16 and the positional stability when the sleeve 16 is suspended by the messenger wire 14, the tubular sleeve with inner and outer surface corrugations is preferable. The cross-sectional shape is not particularly limited, but a circular shape is preferable from the viewpoint of easy cable passage.

The messenger wire 1 is used to construct the cable wiring structure of this embodiment having the above-described structure.
After passing the plurality of sleeves 16 on the messenger 4, the messenger wire 14 may be routed along the wiring path, and then the messenger wire 14 may be hooked on the hanging bolt 12. Thus, in this cable wiring structure, it is not necessary to dispose a supporting member such as a cable rack as in the conventional wiring structure along the cable wiring path, and only the messenger wire and the cable are mainly laid. Even in the limited narrow space between the ceiling slab and the ceiling plate of the building where the concrete beam is obstructing, it is possible to pass the cable through the concrete beam. On the other hand, in the conventional wiring method, it is unacceptable to penetrate a supporting member such as a cable rack into a concrete beam because of the strength of the concrete beam. Therefore, it is necessary to widen the space between the ceiling slab and the ceiling plate, resulting in an increase in the height of the building and an increase in construction cost. On the other hand, in the present embodiment, since the wiring as described above is possible, it is possible to reduce the building construction cost as compared with the related art. In addition, compared to the conventional wiring method that requires the provision of a rigid support member, the present embodiment allows the cable to be wired with less material and manpower.

Second Embodiment FIG. 3 is a schematic structural diagram showing a wiring structure 30 of a second embodiment as an example of constructing a branch wiring of a cable. In FIG. 3, the same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. The branch cable 32 is a sleeve 1
The exposed portion 33 of the cable 18 which is the main line between 6 and 16
It branches from. The branch cable 32 is supported by a sleeve 34, the sleeve 34 is supported by a messenger wire 36, and the messenger wire 36 is a ceiling slab E, similar to the wiring structure of the trunk cable.
It is supported by suspension bolts 38 fixed to the. The wiring structure of the cable 18 which is the main line is the same as that of the first embodiment. With the wiring structure 30 having such a configuration, branch wiring can be easily installed even in a narrow space between the ceiling slab and the ceiling plate.

Third Embodiment FIG. 4 shows a wiring structure 40 as a third embodiment of the wiring structure according to the present invention. The wiring structure 40 supports a rail 44 supported by a support tool 42 on a concrete ceiling slab E of a building, a sleeve station 46 that freely slides along a lower flange 45 of the rail 44, and a sleeve station 46. The messenger wire 48 and the individual sleeves 50 of the sleeve string 46 are passed through the respective sleeves 50.
And a cable 52 supported at the bottom of the. The rail 44 is made of H-shaped steel or I-shaped steel and is arranged along the cable wiring path, and can be arranged linearly or curvedly when viewed from above the rail 44.

As shown in FIG. 4B, the sleeve string 46 has three sleeves 50 which are vertically connected by a connecting portion 53. An inverted T-shaped locking piece 54 is provided on the lower side of each sleeve 50, and an engaging portion 56 that engages around the inverted T-shaped portion of the locking piece 54 is provided on the upper side thereof. The locking piece 54 of the upper sleeve 50 and the engaging portion 56 of the lower sleeve 50 form a pair to form a connecting portion 53, and the both sleeves 50, 50 are vertically connected.

In the present wiring structure 40, as shown in FIG. 4 (c), the uppermost sleeve 58 of the sleeve series 46 (here, a different reference numeral is attached to distinguish it from the sleeve 50 below it), An engaging portion 60 that engages the lower flange 45 of the rail 44 so as to surround the lower flange 45, and a penetrating portion 62 that fixes the sleeve 58 at a predetermined position of the messenger wire 48 after penetrating the messenger wire 48.
The support sliding means 64 consisting of and is provided on the upper side thereof. In order to fix the messenger wire 48 at the penetrating portion 62, a method of driving the messenger wire 48 by pressing a wedge or the like into the messenger wire 48 after penetrating the messenger wire 48 is adopted.
The sleeve 58 is slidably attached to the rail 4 by the engaging portion 60.
Since the messenger wire 48 is supported by the messenger wire 48 and fixed at a predetermined position of the messenger wire 48, when one end of the messenger wire 48 is pulled, the sleeve 58 slides along the rail 44 together with the messenger wire 48, and the predetermined distance is maintained. It will be in the state of being placed.

In the present embodiment, five sleeve stations 46, each of which is formed by connecting three sleeves 50 in the vertical direction, are arranged, and three cables are routed to each sleeve 50 of the sleeve station 46. However, the number of sleeves in the series of sleeves, the number of arrangements of the series of sleeves, the number of cables for each sleeve, etc. are for convenience, and may be any number in actual construction.

The wiring structure 40 of this embodiment is suitable for multi-track wiring of a cable as described above and uses a rail 44 having high strength as a supporting member, so that it is suitable when the load of the cable is large. Is. Also, the wiring structure 4
0 is fixed at a predetermined position of the messenger wire 48 by the above configuration and can move freely along the rail 44. Therefore, when the wiring structure 40 is constructed, for example, in FIG. 4 (a) is moved to the right side to assemble a large number of sleeves 46, and then the messenger wire 48 is pulled from the left side to be arranged at a predetermined position as shown. Therefore, in the wiring work, as in the conventional wiring method, the worker moves along the route of the cable to lay a cable support member such as a conduit, a cable rack, and a cable tray, and when the cable is routed on it. The said work becomes unnecessary and the scaffolding for it becomes unnecessary. Therefore, it is possible to save the wiring material and improve the efficiency of the wiring work as compared with the conventional cable wiring structure.

[0022]

The cable wiring structure according to the present invention comprises a support member, a cable support sleeve supported by the support member at a distance, and a cable passing through the cable support sleeve. Therefore, compared to the conventional cable wiring structure that uses a cable rack that requires labor and materials, the configuration is simple and the cable can be laid along the desired wiring route of the cable. The time required can be shortened, and the wiring material and manpower can be reduced. Further, as compared with the conventional method of laying the cable on the planar continuous support member, the space required for the wiring structure is significantly reduced, so that the ceiling slab and the ceiling plate which the concrete beam interferes with. Even in a limited narrow space, a desired number of cables can be laid through the concrete beams. Therefore, the height of the building can be made lower than that of the conventional wiring structure, and the construction cost can be reduced. Therefore, it is optimal as a cable wiring structure in a building or a factory building. Further, when it is necessary to add a cable for changing or repairing work, another cable supporting sleeve can be connected under the cable supporting sleeve to add a cable through line to easily add the cable. . Further, when branch wiring is required, the cable can be easily branched from the cable exposed portion between the cable support sleeves. Further, another cable wiring structure for branch wiring can be added under the wiring structure of the main cable to secure the passage of the branch cable. By using the cable wiring structure according to the present invention, the cable wiring route can be freely set, so that the wiring length can be minimized, the wiring material can be saved, and the voltage drop of the cable can be minimized. You can Due to the above advantages, the present invention can significantly reduce the material cost and labor cost required for cable wiring, particularly cable wiring work in a building.

[Brief description of drawings]

FIG. 1 is a schematic structural diagram showing a first embodiment of a wiring structure according to the present invention.

2 is an axial cross-sectional view of a sleeve used in the wiring structure of FIG. 1, FIG. 2 (a) shows a smooth tube type sleeve,
FIG. 2B shows a corrugated tubular sleeve.

FIG. 3 is a schematic structural diagram showing a second embodiment of the wiring structure according to the present invention.

FIG. 4 (a) is a schematic structural view showing a third embodiment of the wiring structure according to the present invention, FIG. 4 (b) is an explanatory view showing a sleeve connecting means, and FIG. 4 (c). [Fig. 3] is an explanatory view of a sleeve used in the uppermost stage.

FIG. 5 is an explanatory diagram showing a conventional cable wiring structure.

[Simple explanation of symbols]

 10 Wiring structure of the first embodiment 12 Hanging bolt 14 Messenger wire 16 Sleeve 18 Cable 30 Wiring structure of the second embodiment 32 Branch cable 34 Sleeve 36 Messenger wire 38 Hanging bolt 40 Wiring structure of the third embodiment 42 Support Tool 44 Rail 45 Lower flange of rail 46 Sleeve connection 48 Messenger wire 50 Sleeve 52 Cable 53 Connecting portion 54 Locking piece 56 Engaging portion 58 Uppermost sleeve 60 Engaging portion 62 Penetrating portion 64 Supporting sliding means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihisa Kuwahara 3-17-5 Toyosaki, Kita-ku, Osaka Nidec Corporation

Claims (1)

[Claims] 1. In an indoor cable wiring structure, a supporting member provided on the cable wiring path, and a plurality of cable supporting sleeves arranged along the cable wiring path while being supported by the supporting member. A cable wiring structure comprising: a cable that passes through a cable support sleeve.