JP2789156B2 - Protective cover for extension of cable with branch connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branch protection cover for preventing a member projecting from a side of a branch connection from being caught on a structure when a cable having a branch connection is laid. Regarding, in particular, the protective cover is attached to the branch connection portion without using means for fixing using a bolt or the like,
The present invention relates to a protective cover for extension of a cable with a branch connection portion configured to be easily fixed.

[0002]

2. Description of the Related Art In indoor wiring of high-rise buildings such as buildings,
It is necessary to branch connect the branch cable for each layer to the trunk cable. In order to simplify the indoor wiring work as described above, when manufacturing a trunk cable in a factory, branch connection parts are integrally attached to each power supply layer of the building, and a large number of branch connection parts are installed. Has been carried to a laying site in a state in which a cable integrally provided with a cable is wound around a drum. Then, when laying the trunk cable with the branch connection portion in the building, a work of lifting the cable in a cable duct of the building or the like is performed, and the upper end of the cable is fixed, and the cable is dropped from the upper part of the cable duct. Thereby, each branch connection part can be positioned corresponding to each floor of the building. Therefore, at each level of the building, power can be easily received simply by connecting the power receiving side connector of the power receiving branch cable to the branch portion of the branch connection portion.

However, as described above, in the case where the branch connection portion is provided integrally with the trunk cable, the branch portion protrudes from the side of the branch connection portion. The problem is that the branch part is caught by a duct structure, for example, a side member or a cross member of a cable rack, a through hole in a floor or a wall, and the branch part is damaged when being lifted up and moved. There is. Therefore, in order to prevent the branch connection portion from being caught on an obstacle, the actual connection 5-144.
As disclosed in JP-A-07-2007 and the like, it has been proposed to cover the outer peripheral portion of the branch connection portion with a protective cover. In the above-mentioned conventional example, a cover member is arranged from both sides to a branch connection portion provided with a branch portion protruding from a side portion, fixed with bolts, and held integrally with the trunk cable.
The protection cover of the branch connection portion has diagonal guide surfaces formed on both sides in the length direction of the trunk cable, and can protect the branch portion when the trunk cable is moved in the cable duct of the building. At the same time, the trunk cable can be easily moved.

[0004]

However, the above-mentioned conventional branch portion protective cover needs to be constructed so as to cover the entire branch connection portion in order to allow movement in both the longitudinal direction of the trunk cable. There is a problem that the configuration becomes large. In addition, in order to attach the branch part protection cover to the branch connection part, a fixing means using bolts is used, and before the main cable is manufactured at the factory and wound on the cable drum, the branch part protection cover is attached. There is a problem that much work is required for fixing work and the like. However, when laying a trunk cable in a building, it is common to use a means in which the drum around which the cable is wound is placed on the ground and the inside of the cable duct is pulled up. Constructing the means for providing guidance to the user also has extra performance.

Further, in the conventional branch part protection cover, since the branch part protection cover is detached from the branch connection part after the work of laying the trunk cable, and the reuse is considered, the branch part protection cover is used. The structure of the protective cover is very strong. However, in order to use the branch part protection cover repeatedly, it is necessary to perform an operation of collecting the branch part protection cover without damaging it, and extra work is required to collect only the branch part protection cover. The problem remains that it requires. In addition, since the branch part protection cover is used repeatedly, it is necessary to configure the branch part protection cover so that it is not easily damaged. It is troublesome to remove the branch protection cover used for the trunk cable having a large capacity.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problem of the conventional protective cover for a branch portion by arranging means for covering the branch portion only in the moving direction of the branch connection portion. Provided is a configuration that simplifies the configuration and is configured so that it can be fixed simply by attaching the extension wire protection cover to the branch connection portion, and provides a wire extension protection cover for a cable with a branch connection portion that can be easily attached and detached. It is intended to be.

[0007]

SUMMARY OF THE INVENTION According to the present invention, the branch connection is provided prior to the extension of a branch connection cable provided with a branch connection to which a power receiving side connector can be connected at a side of a trunk cable. The present invention relates to a cover which is attached so as to partially cover a side circumferential surface on a trunk line side and a side circumferential surface on a branch side of a section, and which is removed after completion of extension. In the present invention, two members, a main body member having a substantially U-shaped cross section that covers the side peripheral surface of the trunk side main body of the branch connection portion, and a branch member having a substantially U-shaped cross section that covers the branch side lateral surface, The two members are integrated into a substantially L-shape, and the tip portions of the two members are connected and fixed by an inclined guide member that is tapered and inclined in the extending direction. Further, in the present invention, the main body member and the branch member of the extension wire protective cover each have a U-shaped inner surface shape corresponding to the outer diameter of the member corresponding to the branch connection portion, and the U-shaped two-sided projection is provided. The end may protrude so as to be located beyond the center of each member of the branch connection portion in the axial direction, so that the extension wire protective cover can be elastically held on the branch connection portion.
Further, in the present invention, the U-shaped tip of the main body member of the extension wire protective cover is provided with an axial slit to form a strip-shaped portion, and after attaching the protective cover to the branch connection portion, Means for fixing the strip-shaped portion on the branch connection portion or the trunk cable using an appropriate fastening means can be used.

[0008]

In the protective cover for extension of the present invention constructed as described above, the upstream portion of the branch connection portion of the trunk cable in the moving direction and the upstream portion of the branch portion are substantially U-shaped. By providing a means for covering with a member having a U-shaped cross section and reinforcing the two members having a substantially U-shaped cross section arranged at a right angle with a diagonal member, an obstruction provided by a protective cover for extension wire provided in a duct of a building is provided. It can be prevented from being caught on an object and can be easily moved. Further, since the member having a substantially U-shaped cross section of the present invention is fixedly held to the outer peripheral portion of the cylindrical cable connection portion by using the holding force of the arc-shaped member itself, a bolt or the like is used for mounting. Therefore, it is possible to easily perform the work of attaching to the branch connection portion at the factory. And
With a plurality of extension protection covers attached to the trunk cable, the cable is wound around a drum and shipped from a factory, and can be laid on a cable duct by being lifted at a laying site.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a protective cover for extending a cable with a branch connection according to the present invention. The example shown in FIG. 1 shows a branch connection 3 between trunk cables 1 and 2.
In the figure, a state in which the extension wire protective cover 10 is attached to the one in which
The extension wire protective cover 10 is attached to the branch connection portion so as to correspond to the operation of moving in the direction. The branch connection portion 3 removes an insulating member formed around the trunk cable to remove a conductor from the portion where the conductor is exposed.
The branch part 4 can be formed similarly to the branch connection part shown in the conventional example. In addition, the branch connection part 4 of this invention is comprised as a member which receives the connector of a power receiving side,
In a state of being shipped from a factory, a cap 5 is attached to a tip end of the branch portion 4. After connecting a main cable, the cap 5 is connected to a power receiving side cable.
Remove and attach the connector. Also,
The branch section 4 is provided with a power detection terminal 6, and ground wires 7, 8 are drawn out above and below the branch connection section 3.

[0010] The protective wire cover 10 shown in FIG.
Is, as shown in FIG. 2 and subsequent figures, a main body 3a of the branch connection portion.
The main body and the branching corresponding portion corresponding to the respective cylindrical members of the and the branch portion 4 and having a substantially U-shaped cross section, and an oblique member. As shown in the side view of the wire drawing protective cover of the present invention shown in FIG. 2, the wire drawing protective cover 10 of the present invention is disposed corresponding to the moving-side tip of the main body 3 a of the branch connection portion 3. The main body corresponding portion 11 and the branch corresponding portion 15 corresponding to the moving side surface of the branch portion 4 are arranged in a substantially L-shape so as to be fitted to the respective members. Further, the oblique member 1 is connected so as to connect the ends of both members.
8 is arranged, and the space between the substantially triangular members is reinforced by the plate-like body 17, and each member is integrally formed by using a plastic material such as hard PVC, polyethylene, polyester premix, ABS resin, or the like. I have. Further, in the following explanatory diagrams, the example shown in FIG. 3 is obtained by viewing the extension cover of FIG. 2 from the direction of arrow C, and FIG.
5 shows a cross section in the direction BB, and FIG. 6 shows a cross section in the direction AA. In addition, the length of the branch connection portion for attaching the wire extension protective cover of the present invention is L
In this case, the length in the vertical direction of the extension wire protection cover 10 is formed to be longer than substantially half (１ ／ L) by the length of the protruding portion of the tip member, and the extension wire protection cover is provided on the side. The projecting width is the projecting length L of the branch portion 4 from the center of the branch connection portion.
It is configured slightly wider than one.

[0011] In the protective wire cover 10 of the present invention,
Main body corresponding portion 11 corresponding to main body portion 3a of branch connection portion 3
As shown in FIG. 3, the base portion is connected to the branch corresponding portion 15, the large diameter portion 12 is provided to extend from the base portion, and the tapered portion 13 is disposed between the base portion and the distal end member 14. .
The large diameter portion 12 of the main body corresponding portion 11 is configured as a member having an inner diameter R corresponding to the outer diameter of the large diameter portion of the main body portion 3a of the branch connection portion, and the distal end member 14 has an inner diameter corresponding to the outer diameter of the trunk cable. It is configured as a member of R1. The distal end member 14 is disposed at the distal end of the trunk cable in the moving direction. The distal end member 14 includes a plurality of strip-shaped members 25.
6), and after attaching the extension wire protective cover 10 to the trunk cable, the periphery of the distal end member 14 is fixed with an adhesive tape, a string, or the like, so that the strip-shaped member surrounds the trunk cable. To secure the extension wire protective cover to the branch connection portion. As shown in FIG. 4, the branch corresponding portion 15 provided separately from the main body corresponding portion 11 in correspondence with the branch portion of the branch connecting portion is configured to have a substantially U-shaped cross section. It is configured to have an inner diameter R2 corresponding to the diameter, and the end 16 is configured to have no opening.

As described above, two members 11 and 15 having a substantially U-shaped cross section are arranged at right angles, and the two members are integrally connected by a substantially triangular plate-like body 17 and an oblique member 18. The extension wire protection cover 10 is configured as shown in the cross section of FIG. In the present invention, as shown in FIG. 5, in the large-diameter portion 12 of the main body corresponding portion 11, the member 20 having a substantially U-shaped cross section is formed of a member having a predetermined thickness. The plate 17 is connected to the center. Further, the front end portion 21 on the opening side of the main body corresponding portion 11.
Is provided at a tip of a semicircular portion of an arc so as to protrude by a length h, and an inner surface of the tip 21 is formed of a member 2 having a substantially U-shaped cross section.
A curved surface having the same radius as 0 is formed, the outer surface is formed substantially linearly, and the thickness of the end portion is formed at t1. The arc surface of the main body corresponding portion 11 is configured as an arc longer than a semicircle, so that when the main body corresponding portion 11 is mounted on the main body portion of the branch connection portion, the elasticity of the main body corresponding portion increases. The main body of the branch connection portion can be held and fixed in a tightened state.

Further, the oblique member 18 disposed on the rear side of the main body corresponding portion 11 via the plate 17 having a thickness d is configured as a member having a width H and an arbitrary thickness. The projecting side corner is cut off obliquely so as to bear the role of guiding when the extension wire protective cover is moved. The cross-sectional view of the extension wire protective cover shown in FIG. 5 is shown as the BB cross section in FIG. 2, but the cross section of the branch corresponding portion 15 is also configured in the same manner as the main body corresponding portion 11, and the branch When the branch corresponding part 15 is attached to the part 4, the branch part 4 can be fixedly held in a tightened state.

As shown in FIG. 6, the distal end member 14 disposed at the distal end of the main body corresponding portion 11 of the present invention comprises a plurality of strip-shaped members 25 arranged through slits 26, as shown in FIG.
The overall shape is substantially U-shaped and has an inner diameter of R1. In addition, an end member is arranged at a tip end of the arc so as to protrude by a length h, and an arc-shaped curved surface is also formed on an inner surface of the end member. Are configured to exert a holding action. In the tip member 14,
Slit 2 for arranging strip-shaped members 25 in the radial direction
The protective cover can be held at the cable branch connection portion by wrapping and tightening an adhesive tape or the like from the outside in a state where the distal end member 14 is positioned with respect to the cable main body. .

In addition to forming the tip member 14 as shown in FIG. 6, in the present invention, as shown in FIG. 7, slits provided between strip-shaped members are provided in parallel. it can. In the example shown in FIG. 7, the slits 26a arranged between the strip-shaped members 25a are formed.
Are arranged in parallel to a line passing through the axis of the tip member 14a. As described above, the slits 26a ...
.. Are arranged in a direction perpendicular to the axis of the branching corresponding portion 15, it is possible to easily remove the mold when integrally injecting the extension wire protective cover using a plastic material. it can. Further, the tip member 1 shown in FIG.
Even in the case of the configuration as shown in FIG. 4A, the operation of tightening and fixing the distal end member to the cable main body can be easily performed.

The protective cover for extension wire of the present invention configured as described above is connected to the branch connection portion of the trunk cable as shown in FIG.
By attaching the main body corresponding part and the branch corresponding part to each of the main body part 3a and the branch part 4 in the state shown in FIG. 18 is placed obliquely.
In addition, since the distal end member disposed above the branch connection portion is fixed around the trunk cable using a tape or the like, while moving the extension wire protective cover, the oblique portion of the wire extension protective cover is moved. Even if a portion of the member collides with another member in the cable duct and an impact is applied to the extension wire protective cover, the member does not come off the branch connection portion. When the trunk cable shown in FIG. 1 is moved in the direction of arrow X, for example, in a cable duct of a building,
Even if there is an obstruction at the opening corresponding to the floor in the middle, the oblique member of the extension wire protective cover can slide to the side of the opening to guide the trunk cable. Therefore, even if the extension wire protective cover of the present invention has a substantially triangular shape, it is possible to perform the operation of guiding the trunk cable in a favorable state.

Further, as described above, the protective cover for extended wire according to the present invention is formed integrally with a plastic material, and can be manufactured as a large number of members of the same standard to obtain a trunk cable. Can be commonly used even if the size is slightly smaller. For example, when the cross-section of the main body of the branch connection portion is small in diameter and the main body corresponding portion or the branch corresponding portion cannot accurately hold each member of the branch connection portion, an adhesive tape or the like is wound around the main body and the arbitrary position. By fixing the extension wire protection cover to the cable or the branch connection portion, the removal of the extension wire protection cover during the installation of the trunk cable can be prevented. And
When the semicircular inner surfaces of the extension wire protective cover coincide with the cylindrical member of the branch connecting portion, the substantially U-shaped member is branched by utilizing the elasticity of the plastic material. The function of holding the outer periphery of the connection portion main body and the branch portion can be exhibited.

The protective cover for wire extension according to the present invention can be easily manufactured by using a plastic material, so that it can be manufactured relatively inexpensively, and the two substantially U-shaped members 11, 15 and Since the reinforcing member is reinforced through the substantially triangular plate-like body 17 and the oblique guide member (oblique member) 18, even if it is relatively light, its structure can be made strong. In the example shown in FIG.
Although the substantially triangular plate member 17 disposed between the main body corresponding portion 11, the branch corresponding portion 15, and the oblique member 18 connecting the distal end thereof has an effect of reinforcing the three members,
In the protective cover of the present invention, a hollow portion can be formed without providing the triangular member. However, in that case, it is necessary to form the oblique member with a large width and thickness so that the oblique member alone can exhibit sufficient strength.

After the cables are laid inside the building, the protective cover of the present invention can be left as it is without removing the extension wire protective cover. Furthermore, in a cable manufacturing plant, when forming a branch connection portion for a trunk cable corresponding to a power supply hierarchy of a building, the cable is connected to the branch connection portion while attaching a wire extension protective cover to the branch connection portion. It can be wound up on a cable drum.
And, as shown in the conventional example, the projecting length and width of the branch portion are formed smaller in the protective cover for wire drawing of the present invention than in the case of using the protective cover for wire forming longer. As a result, the cable can be easily handled. In addition, the extension wire protective cover of the present invention can be attached to a branch connection portion arranged on a trunk cable at a predetermined interval while feeding out a cable from a drum at a cable installation site. The installation work of the extension wire protective cover is not particularly troublesome.

[0020]

According to the present invention, the protective cover for extension of a cable with a branch connection uses the extension cover formed as described above. , And can be easily handled, and can be easily attached to the branch connection portion. In addition, the protective cover for a wire extension of the present invention, an upstream portion in the moving direction of the branch connection portion of the trunk cable portion,
By providing a means for covering the upstream portion of the branching portion with a substantially U-shaped member of the wire-drawing protective cover, and reinforcing the two substantially U-shaped members arranged at right angles with an oblique member. In addition, the extension wire protective cover is prevented from being caught by an obstacle provided in the duct of the building, and the cable can be easily moved. Further, since the substantially U-shaped member of the present invention is fixedly held to the corresponding cylindrical member by using the holding force of the substantially U-shaped member itself, it is necessary to use bolts or the like when mounting. It is easy to attach to the branch connection at the factory, or to attach and secure the extension wire protective cover to the branch connection sequentially while the trunk cable is being extended at the work site. It is possible.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state where a wire extension protective cover is attached to a branch connection portion of the present invention.

FIG. 2 is a side view of the extension wire protective cover of the present invention.

FIG. 3 is a front view as viewed from a direction C in FIG. 2;

FIG. 4 is a front view as viewed from a direction D in FIG. 2;

FIG. 5 is a sectional view taken along the line BB in FIG. 2;

FIG. 6 is a sectional view taken along the line AA of FIG. 2;

FIG. 7 is a sectional view of a tip member according to a second embodiment of the present invention.

[Explanation of symbols]

1.2 trunk cable, 3 branch connection, 4
Branching part, 10 extension wire protective cover, 11 body corresponding part, 14 tip member, 15 branch corresponding part,
17 plate-like body, 18 oblique member, 20 substantially U-shaped member, 25 strip-shaped member, 26 slit.

Claims (3)

(57) [Claims] 1. Prior to extending a cable with a branch connection portion provided with a branch connection portion to which a power receiving side connector can be connected at a side portion of the main cable, a side periphery of the branch connection portion on the main line side is extended. A cover which is attached so as to partially cover the side surface and the side peripheral surface on the branch side, and which is removed after the extension is completed, and has a substantially U-shaped cross section which covers the side peripheral surface of the trunk side main body of the branch connection portion. Two members, a member and a branch member having a substantially U-shaped cross section that covers the branch-side side peripheral surface, are integrated into a substantially L-shape, and the tip portions of the two members are tapered and inclined in the extending direction. A protective cover for extending a cable with a branch connection portion, wherein the cover is connected and fixed by an inclined guide member. 2. A main body member and a branch member of the extension wire protective cover each have a U-shaped inner surface shape corresponding to an outer diameter of a member corresponding to a branch connection portion, and both U-shaped projecting ends thereof. Are projected so as to be located at positions beyond the axial center of each member of the branch connection portion, and the extension wire protective cover can be elastically held on the branch connection portion. Item 2. The protective cover for extending a cable with a branch connection portion according to Item 1. 3. A strip-shaped portion is formed in a U-shaped tip portion of the main body member of the extension wire protective cover by forming an axial slit, and after attaching the protective cover to a branch connection portion, 2. A strip-shaped part is fixed on a branch connection part or a trunk cable by using an appropriate tightening means.
Or the protective cover for wire extension of the cable with a branch connection part according to 2.