JPH0951180A - Optical cable fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical cable fixing structure, especially an optical cable fixing structure for an optical cable provided with a fiber code to be connected with a connector and a tension member, which do not degrade workability in holding an optical cable without increasing the sizes of the device. SOLUTION: An optical cable fixing structure for an optical cable 2, which is provided with a fiber code 4 to be connected with a connector 7 and a tension member 5, is composed of a crimp-style terminal provided in the tension member 5 and a screw 6 to be screwed up into a case 1 through the crimp-style terminal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical cable fixing structure, and more particularly to an optical cable fixing structure for an optical cable having a fiber cord and a tension member connected to a connector.

In recent years, the performance of computers has been improved and optical cables have been adopted accordingly. Most of the floors on which computers are installed have a free access structure. Therefore, optical cables will also be laid under the free access floor. In order to lay it, there is no choice but to pull the cable, which may damage the fiber cord of the optical cable. Therefore, the optical cable contains a steel wire called a tension member for pulling the optical cable when the cable is laid.

[0003]

2. Description of the Related Art Conventionally, there has been a first example shown in FIG. FIG. 9 is a partially cutaway view of the device as viewed from the front. A plurality of printed board units are mounted on the device 90, a connector is provided on the front surface of the printed board unit, and the external interface cable 95 and the fiber cord 93 of the optical cable 91 are joined to the connector via the cable connector. .

Even if the connector is joined, if the cable is free with respect to the apparatus frame (if the cable is not fixed at all), an external force applied to the cable is applied to the connector joining portion, so that the cable is not attached. Fixing to the device frame is mandatory.

As shown in FIG. 10, the fixing is carried out by providing an optical cable holder 96 on an optical cable holding terminal plate 92 fastened to the device frame with screws, and locking the optical cable 91 to the optical cable holder 96. still,
The fiber cord 93 was pulled out from the optical cable 91, and was gathered in one place by the fiber holder 94 and tidy.

FIG. 11 shows another conventional example. In this example, the optical cable 91 is fixed by the holder plate 97 and the optical cable holder 96 in the same manner as in the prior art example, but the holder plate 97 is not fastened to the device frame with screws, but via the chain 98. Is.

[0007]

However, in the conventional structure, since the optical cable is fixed to the device frame,
A hold terminal plate (holder plate) and a cable holder are provided, and it is difficult to secure space, and since the thickness varies depending on the number of pairs of optical cables, a large number of holders corresponding to the thickness of the optical cables are required. Handling is complicated.

[0008] Further, with downsizing of the device and further increase in the number of optical cables connected, it is difficult to secure a holder space for the optical fiber cables and a space for inserting and removing the printed board unit. If priority is given to the holding property, the holder space will hinder the insertion / removal work during maintenance of the printed board unit.

On the other hand, in the opposite case, the size of the apparatus will be increased. Therefore, it is an object of the present invention to provide an optical cable fixing structure that does not increase the size of the device and does not reduce the workability when holding the optical cable.

[0010]

The above object is to provide an optical cable fixing structure for an optical cable in which a fiber cord connected to a connector and a tension member are incorporated.
This can be achieved by comprising a crimp terminal provided on the tension member and a screw that is fastened to the housing via the crimp terminal.

Further, in an optical cable fixing structure of an optical cable in which a fiber cord to be connected to a connector and a tension member are built in, a ring-shaped crimp terminal provided on the tension member, a holding member attached to the housing, and The object described above can be achieved by being constituted by a stick which is locked by the holding member and through which the ring-shaped crimp terminal is inserted.

Further, in an optical cable fixing structure of an optical cable in which a fiber cord to be connected to a connector and a tension member are built, a stopper provided on the tension member and a groove to be fitted with the stopper are provided, and the optical cable is attached to a housing. The above-mentioned object can be achieved by being configured with the holding member.

That is, in the present invention, a tension member composed of a steel wire which is built in the optical cable in advance for laying is used. The tension member has almost the same diameter regardless of the thickness of the optical cable. Therefore, the optical cable can be fixed by adopting a structure for fixing the tension member to the device frame.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An optical cable fixing structure of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a first example of an optical cable fixing structure of the present invention.

A plurality of printed board units are mounted on the housing 1, and cables are connected to the printed board units to supply signals, power, etc., in which case the printed board units are connected. This is done by providing a connector 7 on a PT plate front plate (printed plate front plate) 3 formed on the front surface 1a, and connecting a cable to the connector 7.

As the cable connected to the connector 7, the optical cable 2 is used for speeding up signal propagation, and the fiber cord 4 built in the optical cable 2 is connected to the connector 7.

If the optical cable 2 is free from the housing 1 (apparatus frame), stress may be applied to the connecting portion between the connector 7 and the fiber cord 4, and the connection may be released. The optical cable 2 is fixed to the housing by using the built-in tension member 5.

As the fixing structure, as shown in FIG. 2, a ring-shaped crimp terminal 8 is connected to the tip of the tension member 5 by means such as welding or caulking. Then, the optical cable is fixed by inserting the screw 9 into the crimp terminal 8 and inserting the screw 9 into a screw hole formed in a part of the housing and fastening. The fixing of the optical cables 2 using the tension members 5 is performed by the number of the optical cables 2, so that the housing is formed with screw holes corresponding to the number of the optical cables 2.

By fixing the optical cable using the tension member 5 and because the tension member 5 is made of steel wire, even if an external force is applied to the optical cable 2, the tension member 5 and the housing 1 The external force can be retained between the optical cable 2 and the optical cable 2, and stress is not applied to the optical cable 2, particularly the connecting portion between the fiber cord 4 and the connector 7, and the disconnection of the fiber cord 4 can be prevented.

FIG. 3 shows a second structure of the optical cable fixing structure of the present invention.
It is a figure which shows the example of. First of the optical cable fixing structure of FIG.
In the above example, since the fastening structure uses screws, there is a slight problem in workability, and if the number of optical cables 2 increases, the annoyance will increase accordingly. The second example solves this problem. The second example shown in FIG. 3 is the case 1, PT
The connection relationship between the front plate 3, the connector 7, the optical cable 2 and the fiber cord 4 and the point that a ring-shaped crimp terminal 11 is provided at the tip of the tension member 10 as shown in FIG. 4 is the same as in the example of FIG. The fixing structure of the housing 1 and the tension member 10, and strictly speaking, the crimp terminal 11 is different.

That is, as is apparent from the enlarged view of the portion A in FIG. 3 shown in FIG. 5, the housing 1 is attached to the front surface 1a of the housing 1.
And a mounting surface 12a having a screw hole 12b for fixing with a screw, a stick holding surface 12c bent vertically from the mounting surface 12a, and a guide groove 12d and a guide groove 12d formed on the stick holding surface 12c. A holding member 12 formed of a hole 12e having a diameter communicating with the stick 13 and engaging with the stick 13 is attached.

The stick holding surface 12 of the holding member 12
The stick 13 is inserted into the hole 12e of c. The stick 13 may be inserted into the hole 12e from the guide groove 12d or may be inserted from the direction perpendicular to the stick holding surface 12c. In either case, stick 13
Will be held by the holding member 12.

The stick 13 has a tension member 1
Ring part 1 of the crimp terminal 11 attached to the tip of 0
By inserting 1a, the tension member 10, the crimping terminal 11, the stick 13, and the holding member 12 allow the optical cable 2 to hold its external force between the optical cable 2 and the housing 1. Stress is not applied to the connecting portion with the connector 7, and the fiber cord 4 can be prevented from coming off.

FIG. 6 shows the third structure of the optical cable fixing structure of the present invention.
It is a figure which shows the example of. Second of the optical cable fixing structure of FIG.
Similar to the above example, the third example has improved workability when fixing the optical cable. The third example shown in FIG. 6 is the case 1, P
The connection relationship between the T front plate 3, the connector 7, the optical cable 2, and the fiber cord 4 is the same as in the example of FIG. 1 or 3. The difference is that the tension member 14 is
The optical cable 2 is fixed by providing a ball-shaped stopper 15 instead of a ring-shaped crimp terminal at the tip of the optical cable 2.

That is, as shown in FIG. 8, the front surface 1 of the housing 1
The holding member 16 is attached to a. This holding member 16
Is composed of two outer members 16a and 16b, and the outer member 16b has a groove 16c for engaging with a ball-shaped stopper 15 formed at the tip of the tension member 14.
Are formed. In this groove 16c, the tension member 1
By engaging the stopper 15 of No. 4, the external force can be held between the optical cable 2 and the housing, and stress is not applied to the optical cable 2, particularly the connecting portion between the fiber cord 4 and the connector 7, It is possible to prevent the fiber cord 4 from coming off.

[0026]

As described above, according to the present invention, it is possible to hold an optical cable of any thickness, which simplifies and improves the efficiency of construction. Further, it is possible to reduce the cost because a holder, which has been attached to a plurality of kinds of devices, is unnecessary.

[Brief description of drawings]

FIG. 1 is a diagram showing a first example of an optical cable fixing structure of the present invention.

FIG. 2 is a diagram showing details of a tension member in FIG.

FIG. 3 is a diagram showing a second example of the optical cable fixing structure of the present invention.

FIG. 4 is a diagram showing details of a tension member in FIG.

5 is an enlarged view of part A in FIG.

FIG. 6 is a diagram showing a third example of the optical cable fixing structure of the present invention.

FIG. 7 is a diagram showing details of a tension member in FIG.

FIG. 8 is an enlarged view of a portion A in FIG. 6;

FIG. 9 is a diagram showing a first conventional example.

FIG. 10 is an enlarged view of a main part in FIG.

FIG. 11 is a diagram showing a second conventional example.

[Explanation of symbols]

 1 housing, 2 optical cables, 4 fiber cords, 5,10,14 tension members, 8,11 crimp terminals, 12 holding members, 13 sticks, 15 stoppers, 16 holding members,

Claims (3)

[Claims] 1. An optical cable fixing structure for an optical cable having a built-in fiber cord and a tension member to be connected to a connector, comprising: a crimp terminal provided on the tension member, and a screw fastened to a housing via the crimp terminal. An optical cable fixing structure characterized by being configured. 2. An optical cable fixing structure for an optical cable having a fiber cord connected to a connector and a tension member, the ring-shaped crimp terminal provided on the tension member, a holding member attached to a housing, An optical cable fixing structure comprising: a stick which is locked to a holding member and into which the ring-shaped crimp terminal is inserted. 3. An optical cable fixing structure for an optical cable having a fiber cord connected to a connector and a tension member built-in, the stopper provided on the tension member, and a groove to be fitted with the stopper, the optical cable fixing structure being attached to a housing. An optical cable fixing structure comprising: