JP2544085Y2 - Branch connection of cable - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a branch connection portion of a cable, and more particularly, to a structure in which a branch portion is formed by using a compression sleeve so that a range in which an insulating coating of the cable is stripped can be reduced. The present invention relates to an apparatus that can easily perform an operation of attaching a sleeve to a cable and an operation of insulating processing after attaching the sleeve.

[0002]

2. Description of the Related Art A cable in which a number of stranded conductors are collectively arranged and the periphery of which is covered with a rubber or plastic insulating coating is a cable having a circular cross section, such as a general power cable, or a cable having a real cross section. As shown in JP-A-15253, a cable called a flat cable is known. In the cable as described above, for example, when used as a trunk cable in a factory or a building, a branch connection portion is arranged at a predetermined interval with respect to the cable, and the branch line cable is connected to the branch connection portion. A means for connecting and distributing power to each demand destination is used.

As described above, as a means for forming a branch connection portion to a cable, a branch connection portion as shown in the above-mentioned conventional example can be used. In the conventional example, for a cable of a type called a flat cable as a cable, a coating is stripped off to expose a cable conductor, a compression sleeve is attached to the cable conductor, and a branch line cable is attached to the sleeve. Are compressed in a connected state to form a branch connection portion.

[0006] In addition to the branch connection section, as a branch connection section applied to a general cable, for example, the one shown in FIG. 6 is used. In the branch connection portion 5 shown in FIG. 6, the insulation sleeve 3 is peeled off at a predetermined position of the flat cable 1 to expose the cable conductor 2, and the compression sleeve is covered so as to cover the exposed cable conductor 2. 10 is attached, and means for connecting a branch line cable via a terminal 13 provided on the compression sleeve 10 is used. The compression sleeve 10 has a sleeve main body 11 having a substantially U-shaped cross section, and a cover 15a attached to the opening of the sleeve main body so as to wrap the outer periphery of the cable conductor 2.

[0005] The compression sleeve 10 is arranged so as to wrap the outer periphery of the cable conductor 2, and a compression action is applied from the outside of the compression sleeve 10 so that the cable conductor 2 and the compression sleeve come into contact integrally. And the insulation processing part 6 is formed outside thereof,
Thereby, the outer periphery of the branch connection portion 5 is insulated. Further, in the portion where the sleeve body 11 and the lid 15a of the compression sleeve 10 are combined, a groove-shaped fitting portion is formed at the joint end of both members as in the conventional example, and the cable conductor 2 is formed. The lid body 15a is mounted on the sleeve body mounted thereto in such a manner that the lid body 15a is slid from the lateral direction.

[0006]

However, when the branch connection portion 5 as shown in FIG. 6 is formed, the width L2 at which the insulating coating 3 is stripped from the cable 1 is set to be very large. There is a need to. Therefore, when the insulation processing part 6 is applied after the compression sleeve is fixed to the cable conductor, it is necessary to form the insulation processing part 6 widely. That is, if the width of the compression sleeve is L in the branch connection portion 5 shown in the conventional example, the lid 1 having the same width is attached to the sleeve body 10 of the compression sleeve.
In order to mount 5a from the lateral direction, it is required that the section L2 where the insulating coating is stripped off and the conductor 2 is exposed is set to be at least twice the width of the compression sleeve 10.

[0007] Also, the compression sleeve 1
After the compression sleeve 10 is attached, the compression sleeve 10 is moved to the center of the portion where the cable conductor 2 is exposed, and the compression sleeve is fixed by applying a compressive action to the cable conductor. A coating with an insulating tape is formed on portions of the gap width S on both sides of the sleeve. Further, the operation of forming the insulation-treated portion 6 over the section of the width L1 from the outer peripheral portion of the insulating coating applied to the exposed portion of the cable conductor to a predetermined position around the insulating coating of the cable is performed. It must be made. However, in the case where the insulation processing section 6 is formed by winding an insulation tape, there are problems such as that the individual difference due to the skill of the worker greatly affects, that a long processing time is required, and that the appearance is not good. is there.

In the case where the insulating portion 6 is formed by resin molding, since the insulating process is performed over a long section, the amount of resin to be used increases and the finished size increases. When the cable is wound around a drum in order to manufacture the cable at a factory and transport the cable to a work site, there arises a problem that the branch connection portion becomes an obstacle. Further, there is a problem that an apparatus used for injection molding of the resin becomes large, and there is a difficulty in handling the apparatus. Therefore, as described above, forming the branch connection portion using the conventional compression sleeve has a problem that many solutions are required in processing time, cost, workability, and the like for the branch connection portion.

[0009]

The object of the present invention is to solve the above-mentioned problem of the conventional branch connection portion, and it is possible to shorten a section where a cable conductor is exposed to a cable and to easily perform an operation of attaching a compression sleeve. It is another object of the present invention to provide means for shortening the section of the insulation processing section formed with respect to the branch connection section so as to improve workability.

[0010]

According to the present invention, a plurality of stranded conductors are arranged in parallel, and rubber conductors are arranged around the conductors.
For a flat cable coated with an insulating material such as plastic, the insulating coating is peeled off to expose the cable conductor, and a compression sleeve for branch connection is attached to the exposed portion of the cable conductor, and an end of the compression sleeve The present invention relates to a branch connection portion for connecting a branch line cable to a cable, and compressing and fixing the compression sleeve after attaching the compression sleeve to the cable. In the present invention, the compression sleeve is provided with a branch line connection portion on the back, a U-shaped cross-section housing portion for housing the stranded conductor group, and an opening for mounting the stranded conductor group from the lateral direction. A sleeve body, and a lid engaged with the opening of the sleeve body, the branch line connecting portion of the sleeve body being wide, and the end on the opening side being narrow, so that it is substantially in plan view. In a trapezoidal shape, the trapezoidal portion is arranged at a flat portion of the stranded conductor group arranged in parallel, and a lid having a width corresponding to a narrow portion of the sleeve body is attached. Make up.

As described above, in the present invention, the sleeve body is formed in a substantially trapezoidal shape, and the cover is attached to the narrow portion of the sleeve body, so that the cover is formed of a narrow width. The mounting workability can be improved. Further, the width of exposing the cable conductor from the cable is set only slightly wider than the width of the compression sleeve, so that the work of stripping the insulating coating can be easily performed. Furthermore, when forming an insulation-processed part with respect to a branch connection part, since the width of the insulation-processed part is narrow,
It is possible to reduce the amount of the insulating material used for the insulation processing section and to shorten the working time.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a cable branch connection according to the present invention; In the example shown in FIGS. 1 and 2, the cable 1 shows a case where a flat cable is used as in the example shown in the conventional example, and a plurality of stranded wires are parallel to the flat cable. And the periphery thereof is covered with an insulating coating 3. When attaching the compression sleeve 10 to the cable 1, the insulating coating 3 of the cable 1 is peeled off over a predetermined width L2 to expose the cable conductor 2 and compress the cable conductor 2 to the exposed portion. The sleeve 10 is attached. The sleeve body 11 of the compression sleeve 10
The terminal 13 is provided so as to protrude, and a branch cable can be connected using the connection bolt hole 14 provided in the terminal 13.

In the compression sleeve of the present invention, as shown in FIG. 1, the sleeve body 11 has a base on which the terminals are mounted having a width L and a width on the side on which the lid 15 is mounted is L / 2. And a substantially trapezoidal shape in plan view. Then, a lid 15 having a width of L / 2 is attached to a narrow portion at the tip of the sleeve main body 11 to constitute the compression sleeve 10. Also, the compression sleeve 1 of the present invention
At 0, one side of the sleeve main body 11 is formed in a straight line, and the other side is formed as a tapered portion.
The lid 15 attached to the sleeve main body 11 is arranged with one end of the sleeve main body aligned with one linear end. When the lid 15 is attached to the sleeve main body 11, the lid 15 can be attached via a tapered portion formed on the sleeve main body 11, as described later.

As shown in FIG. 2, the compression sleeve 10 includes a substantially U-shaped sleeve main body 11,
And a cover 15 arranged to cover the opening of the sleeve body 11. In addition, connecting portions 12 and 12a formed by concave grooves are provided at connection end portions of both members, respectively.
17 and 17a are formed, and the cover 15 is attached to the sleeve main body 11 in a slidable manner in the same manner as in the case of mounting the lid of the box. Then, as shown in FIG. 2 described above, after a large number of cable conductors 2 are housed in the space inside the compression sleeve 10,
The outer peripheral portion of the compression sleeve 10 is compressed, the compression sleeve 10 is electrically connected to the cable conductor 2, and the insulation processing section 6 is formed around the compression sleeve.

When the compression sleeve 10 is attached to the conductor 2 of the branch connection portion 5 of the cable 1, the insulating coating 3 is applied to the cable 1 in the same manner as in the case of the conventional branch connection portion.
Is peeled off to expose the cable conductor 2, the sleeve body 11 is attached to that portion, and then the lid 15 is assembled. As shown in FIG. 1, the width L2 of the portion where the conductor 2 is exposed from the cable 1 is set to be larger than the width L of the sleeve main body 11, so that the cover 15 When attaching the cover body 15 to the cover body 15 from the portion corresponding to the tapered portion of the sleeve body 11.
Can be attached.

In the present invention, for example, the width L exposing the cable conductor 2 by stripping off the insulating coating 3 of the cable 1 is shown.
2 can be set substantially equal to the width L of the sleeve body 11. That is, since there is a space in the portion corresponding to the tapered portion of the sleeve main body 11 for the cover 15 to enter, there is theoretically no need to form an extra space on both sides of the compression sleeve 10. . Further, in the compression sleeve 10 of the present invention, a conductive portion having a width L is provided on the side where the terminal 13 protrudes.
Power can be supplied from the portion to the other branch line cable. In other words, the sleeve body arranged with respect to the cable conductor has a small current carrying capacity on the upper side of the figure, but is set as a large current carrying capacity on the side where the terminal 13 is provided. The wire cable can have the same power supply capacity as that of the conventional compression sleeve.

When connecting a branch cable to the cable 1 of the present invention configured as described above, for example, as shown in FIG. 3, a hole provided in the terminal 13 of the compression sleeve 10 is used. , The crimp terminal 22 provided at the tip of the conductor 21 of the branch cable 20 is fixed with a bolt 23 so that the branch cable 20 is attached. Further, the branch line cable 20 can have a plurality of lead wires attached to one terminal, and a plurality of lead lines can be attached to the terminal in accordance with the number of branch line cables attached to the branch connection portion 5. Holes can be arranged.

In the embodiment of the present invention described above, the terminal is provided so as to be exposed to the compression sleeve, and the branch line cable 20 is attached to the terminal. As shown in FIG. 4, means for attaching the conductor of the branch line cable to the compression sleeve and crimping and fixing the conductor together with the cable conductor can be used. In the compression sleeve 10 shown in this embodiment, the combination state of the sleeve body 11 and the lid 15 is as shown in FIG.
Are set in the same manner as in the embodiment. Also, the operation of attaching the lid 15 to the sleeve main body 11 is performed in the same manner as in the case of FIG.

After the compression sleeve 10 is attached to the cable conductor 2, the hole 25
After the conductors of the branch cable 20 are inserted into the cable and all the conductors are combined with the compression sleeve 10, the compression sleeve 10 is subjected to a compressing operation and fixed by the compression sleeve. After the connection of the conductor is performed, an insulating tape may be wound around the conductor or a resin molding process may be performed to form an insulating portion.

Further, in the present invention, as shown in FIG. 1, in addition to attaching the cover 15 to a position offset to one side with respect to the sleeve main body 11, it is shown in FIG. As described above, the position where the lid is attached may be arranged at the center of the sleeve body. In the example shown in FIG. 5, the tapered portions are formed on both sides of the sleeve main body 11, but the area of the sleeve main body 11 in contact with the cable conductor 2 is substantially different from that shown in FIG. Will not be. However, in this embodiment, the sleeve body 11
Since the lid 15 is arranged at the center of the tip of the compression sleeve 10, the stability of the compression sleeve 10 is improved.

In the above embodiment, the sleeve body 11
When the cover 15 is attached, the sleeve body 11
Is moved to one side of the branch connection portion 5, and then the lid 15 is attached through a gap between the sleeve main body 11 and the insulating coating 3. Then, after assembling the two members 11 and 15 integrally, the compression sleeve 10 is moved to the center of the branch connection portion 5 to perform positioning, and the operation of compressing the compression sleeve 10 is performed. I do. After performing the above operations, the compression sleeve and the exposed cable conductor 2
Work to wrap the insulation tape on the
Over the circumference of the insulating coating 3,
The insulation processing part 6 is constructed. The operation of forming the insulation processing section 6 is performed in the same manner as in the case shown in FIG.

In the present invention, the width of the section where the cable conductor is exposed can be narrowed when forming the branch connection part. And the height of the protrusion can be reduced. Also, when the cable provided with the branch connection portion is wound around a cable drum, the portion of the branch connection portion does not hinder the winding, and the cable can be easily handled. Furthermore, even when cables are laid in the field, the height of the protruding portion of the branch connection portion is smaller than that of the conventional cable, so that the branch connection portion does not hinder handling during the installation. Become.

[0023]

[0024]

The branch connecting portion of the present invention is constructed as described above, and the plate member of the sleeve body parallel to the upper and lower surfaces of the stranded conductor group arranged in parallel of the flat cable is provided. Since it has a substantially trapezoidal shape and the branch line connection part is configured to correspond to the wide part, it can maintain the same current carrying capacity as the conventional compression sleeve, and the sleeve can be used as a twisted conductor group. It can be stably fixed and held. In the present invention, since the lid combined with the sleeve main body is configured to have a narrow width, the operation of attaching the lid to the sleeve main body can be easily performed. Further, the width of the cable conductor exposed from the flat cable can be kept to the extent that it is equal to or slightly larger than the maximum width of the compression sleeve. It is possible to reduce the size of the unit and the working cost.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of a branch connection unit of the present invention.

FIG. 2 is a cross-sectional view illustrating the configuration of the compression sleeve of the present invention.

FIG. 3 is an explanatory diagram of a case where a branch line cable is connected to the branch connection portion of the present invention.

FIG. 4 is a plan view of another embodiment of the present invention.

FIG. 5 is an explanatory view showing another configuration of the sleeve body of the present invention.

FIG. 6 is an explanatory diagram of a branch connection section of a conventional example.

[Signs in the figure]

 DESCRIPTION OF SYMBOLS 1 Cable 2 Cable conductor 3 Insulation coating 5 Branch connection part 6 Insulation processing part 10 Compression sleeve 11 Sleeve body 13 Terminal 15 Lid 20 Branch cable.

Claims (1)

(57) [Scope of request for utility model registration] 1. A flat cable in which a plurality of stranded conductors are arranged in parallel, and the conductor is covered with an insulating member such as rubber or plastic, the insulating coating is peeled off to expose the cable conductor, A branch connection compression sleeve for attaching a branch connection to an exposed portion of the cable conductor, connecting a branch line cable to an end of the compression sleeve, and compressing and fixing the compression sleeve after attaching the compression sleeve to the cable. In the compression sleeve, a branch body connection portion is provided on the back portion, a housing portion having a U-shaped cross section for housing the stranded conductor group, and a sleeve body having an opening for mounting the stranded conductor group from the lateral direction, A lid body locked to the opening of the sleeve main body, the branch line connecting portion of the sleeve main body is wide, the end of the opening side is narrowed, and it has a substantially trapezoidal shape in plan view. Structure The trapezoidal portion is disposed at a flat portion of the stranded conductor group arranged in parallel, and a cable having a width corresponding to a narrow portion of the sleeve body is attached. Branch connection.