JPS6084911A - Connector of electric and optical composite cable - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Technical Field] The present invention relates to a connection section of a composite cable having an electric cable core and an optical cable core, and particularly to a type of connection having a connection section protection sleeve that connects the jackets of the composite cable. This relates to improvements to the department.

[Prior art]

Normally, when connecting electric/optical composite cables, the connecting portion of the electric cable core and the connecting portion of the optical cable core are housed together in a protective sleeve. However, when assembling such a connection, the connection of the electrical cable core and the connection of the optical cable core are performed in separate processes, so the connection should be sealed with a protective sleeve until both cable cores are connected. I can't. For this reason, it takes time to open the end of the cable, make the connection, and cover and seal the cable with the probe sleeve, which is undesirable in that it increases the chance of moisture entering the cable. In particular, when connecting a multi-layer cable with an optical cable core inserted into the OF cable,
1. Even after the connection of the cable core is completed, do not cover it with a protective sleeve until the connection of the optical couple core is completed n7.
Therefore, it would be wasteful to continue broadcasting the performance, which would increase the amount of oil used and be uneconomical.

Further, in such a connection part, it is necessary to open the protective sleeve when performing maintenance and inspection of the connection part of the optical cable core, but doing so is not preferable because there is a risk that moisture or the like may enter the connection part. Particularly in the case of OF cables, flipping the protective sleeve is a large-scale operation as it involves oil spillage, and there is also the risk of voids penetrating into the oil, making it almost impossible to do so.

[Purpose of the invention]

In view of the problems of the prior art as described above, an object of the present invention is to provide a connection part of an electric/optical composite cable that allows easy maintenance and inspection of the connection part of an optical couple core and also facilitates the assembly work of the connection part. It is about providing.

[Structure of the invention]

At the pull connection part, a drum consisting of a winding drum with a smaller diameter and flanges at both ends is provided in the middle of the protective sleeve that connects the outer sheaths of both cables, and the electrical cable core of the above-mentioned spliced cable is The optical cable core is connected to the protective sleeve inside the drum, and the optical cable core passes through the flange of the drum, is pulled out to the outer periphery of the drum, and is connected there.

〔Example〕

The drawing shows an embodiment of the invention, which is a connection part of a plated cable with an optical cable core inside the OF cable.

In the figure, 1a and 1b are optical composite OF cables to be connected, 3a * 3b is a terminal protection sleeve attached to the end of the jacket with lead work, etc., and 5a is a U 11' cable core (the cable 1b side is not shown). ), 7 is the connection part, 9
a and 9b are optical cable cores containing optical fiber cores;
11 is its connection portion, 13a.

13b is a cylindrical main protective sleeve, and 15 is a drum.

The drum 15 includes a cylindrical winding drum 17 and flanges 19a and 19b which are fixed at both ends thereof. The drum 15 and the main protective sleeves 13a and 13b on both sides thereof are connected by tightening the respective flanges and flanges with screws, and the main protective sleeve and the terminal protective sleeves 13a and 3
a, 13b and 3b are connected by tightening their respective flanges with screws. In other words, drum 15,
Main protective sleeves 13a, 13b and terminal protective sleeve 3
The internal space constituted by a and 3b is sealed from the outside, and the connecting portion 7 of the OF cable core is placed within this sealed space and immersed in oil.

The diameter of the winding drum 17 of the drum 15 is the same as that of the main protective sleeves 13a, i.
3b's diameter) /JS is small, and the drum's tsuba 1
The parts of the main protective sleeves 13a and 13b of the parts 9a and 19b are provided with lead-out pipes 21a and 21, respectively.
b penetrates in the direction of the cable and is fixed with lead work or the like. The optical cable cores 9a and 9b are connected to this pull-out pipe 21a,
21b, each of which is pulled out to the outer periphery of the winding drum 17 of the drum, and the connecting portion c11 connected thereto is the connecting portion, and the extra length of the connection is wound around the outer periphery of the winding drum 17 and saved. A seal 23a made of lead or putty is applied from the end of the lead-out pipe 21a inside the main protective sleeve 13a to the outer periphery of the optical cable core 9a. The same applies to the inside of the other main protective sleeve '13b. Also, the drum's both flange 19a.

A protection cover 25 is placed over the outer periphery of the optical cable cores 19b, and thereby protects the connecting portions 11 of the optical cable cores 9a, 9b and their extra lengths.

As described above, according to this embodiment, since the drum having a smaller diameter than the protective sleeve is arranged in the middle of the protective sleeve, the optical cable core lr is f#, htt:<It is possible to pull out the optical cable core to the outer periphery of the drum, and this allows the connection part of the optical cable core to be placed in an external space completely separated from the connection part of the 01i" cable core. Therefore, the maintenance and inspection of the connection between Hikariichi and Full Core is
This has the advantage of being easy to perform without affecting the cable core connections. Also, when assembling the connection part,
The advantage is that the cable core connection and its sealing can be done first, and the optical cable core connection can be done afterwards without being subject to time constraints, making the connection work easier.

In the above embodiment, the protective sleeve is composed of a main protective sleeve and a terminal protection sleeve, but they can also be constructed as one piece.

Further, although the optical cable core is drawn out to the outer periphery of the drum through a draw-out tube, this pull-out tube may be omitted and the optical cable core may be drawn out through a hole formed in the flange of the drum. However, the optical cable core can be more securely protected by providing a pull-out pipe.

In addition, the drum was placed exactly in the center of the exploration sleeve, but
It can also be placed closer to piece III. In this case, the position of the drum in the longitudinal direction of the connection length and O1! 'Shifting the position of the cable core connection part is effective in reducing the outer diameter of the connection part by /J%.

In addition, in the above embodiment, the connecting part of the OF cable containing the optical cable core was explained, but even if it is the connecting part of other electric power cables including the optical cable core, the connecting part of the electric power cable core can be protected with α sleeve. For the type that wanders in
The invention is also possible for: IK. Furthermore, the present invention can be similarly applied to the connection portion of a telecommunications cassette including an optical cable core.

〔Effect of the invention〕

As explained above, according to the present invention, a drum with a smaller body diameter is placed in the middle of the protective sleeve that connects the outer sheaths of the electric/optical composite cable, so that the optical cable can be connected by utilizing the difference in diameter between the two. The core can be pulled out to the outer periphery of the drum, and this also makes it possible to place the connection part of the optical cable core in a space completely separated from the connection part of the electric cable core. ), there is an advantage that maintenance and inspection of the optical cable core connection part can be easily carried out without affecting the connection part of the electric cable core.

Furthermore, when assembling the connection part, the connection part of the electrical cable core can be sealed before connecting the optical cable core, which has the advantage of making the connection work easier.

[Brief explanation of the drawing]

The drawing is a partially cutaway front view showing a connection S of an electric/optical composite cable according to an embodiment of the present invention. 1a, 1b...Optical composite OI" cable, 3a,
3b...Terminal insurance sleeve, 5a...
OF chicle core, T...OF cable core connection part, 9a, 9b...optical cable core, 11.
...Optical cable core connection part, 13a, 13b...
...Main membrane sleeve, 15...Drum, 1
7... Winding drum, 19a, 19b...
Tsuba, 21 a, 21 b... Pull-out pipe, 25
...Protective cover.

Claims (1)

[Claims] A drum consisting of a winding drum with a smaller diameter and flanges at both ends thereof is provided at the opening of the protection sleeve connecting the (υ jacket m of the electric/optical composite cable), The optical cable core of the composite cable is connected to the protective sleeve and the circular part of the drum, and the optical cable core is passed through the flange of the drum, pulled out to the outer periphery of the drum, and connected there. A transition section of an electric/optical composite cable characterized by: (2) The connection section according to claim 1,
The drum has a protective cover that spans the outer periphery of both flanges. (3) In the connecting portion according to claim 1, a portion b of the collar of the drum located inside the sleeve is fixed with a draw-out pipe passing through it, and the optical cable Seven of the cores are drawn out to the outer periphery of the winding drum.