JP2002162537A - Method for assembling optical connector, and connector- attached optical fiber cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical connector assembling method that can simplify structure related to connector termination, particularly a structure for securing tensile strength, and to provide a connector-attached optical fiber cable. SOLUTION: The optical connector assembling method is such that an optical fiber 2 and a tensile body 3 are exposed at the termination of an optical fiber cable 1, with an optical connector ferrule 33 being attached to the tip end of the optical fiber 2 and stored and held at the tip end of the housing 35 of the optical connector 31, and that the tensile body 3 is restrained, by fixedly caulking it on a caulking ring 40 installed in the optical connector 31, and thereby the connector-attached optical fiber cable is thus obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber cable terminal comprising an optical fiber and a tensile member disposed on both sides of the optical fiber so as to face each other and extending along the longitudinal direction of the optical fiber. The present invention relates to a method of assembling an optical connector for terminating the optical fiber so as to be connectable to the connector, and an optical fiber cable with a connector.

[0002]

2. Description of the Related Art For example, an optical fiber cable 1 as shown in FIGS. 5 (a) to 5 (c) is frequently used for optical wiring on the floor of a building, under a floor, or the like. For convenience of explanation, reference numeral 1a, FIG.
Reference numeral 1b is used for the optical fiber cable 1 shown in FIG.
In some cases, the optical fiber cable 1 is denoted by reference numeral 1c to be distinguished. In addition, these optical fiber cables 1a to 1
When a configuration common to c is described, it may be described as “optical fiber cable 1”. The optical fiber cable 1 includes an optical fiber 2 such as an optical fiber core, and a tensile strength member 3 disposed on both sides of the optical fiber 2 and extending along the longitudinal direction of the optical fiber 2. It has a solid structure embedded in a resin such as polyethylene. The optical fiber cable 1 is often formed to have a flat cross section, which has advantages such as prevention of torsion by rolling prevention and stability of the installation state at a predetermined position. In the case of the optical fiber cable 1 having a flat cross section, the optical fiber 2 is buried in the center of the cross section of the outer cover 4, and the tensile members 3 are opposed to each other in the cross section longitudinal direction of the outer cover 4 at positions slightly separated on both sides of the optical fiber 2. It is buried on both sides. As the strength member 3, a steel wire is generally used.

FIGS. 6A and 6B show an optical connection box 6 for connecting the optical fiber cable 1 to another optical fiber cable 5. The optical connection box 6 includes a box-shaped connection box body 7.
And a lid 8 provided on the front side of the connection box main body 7 (in front of the paper in FIG. 6 (a), on the left side in FIG. 6 (b)) so as to be openable and closable. 9 and fixed. In the center of the inside of the optical connection box 6, an adapter array section 11 in which a plurality of optical connector adapters 10 are vertically arranged.
Is provided. Also, inside the optical connection box 6, via the adapter arrangement section 11, the drop-in side termination area 12 on the left side in FIG. 6A and the wiring side termination area 13 on the right side in FIG. And are defined.

[0004] The end of the optical fiber cable 5 drawn into the drop-in side termination area 12 is located at the lower part of the optical connection box 6 (Fig. 6).
(A), (b) the tension member 15 fixed to the connection box main body 7 by the cable gripping parts 14 provided on the lower side (from the center of the optical fiber cable 5).
Is fixed to the connection box main body 7 by a tension member fixing part 16 arranged close to the cable gripping part 14. One end of the optical fiber 17 (optical fiber core wire or the like) led out to the end of the optical fiber cable 5 has an optical connector 1
The optical connector 18 is connected to the other end of the terminated optical fiber 19 terminated by the connector 8 so as to be connectable to the connector.
Thus, the optical connector adapter 10 is connected to the optical connector adapter 10 so as to be connectable to the connector. Connection part 20 between optical fiber 17 and termination optical fiber 19 (optical connector, fusion splicing part, etc.)
The optical fiber 17 and the terminated optical fiber 1 are stored in the extra length storage tray 21 stored in the drop-in side termination area 12.
It is stored so that it can be taken out with an extra length of 9.

[0005] The termination optical fiber 19 is connected to the optical connector adapter 10 of the adapter arrangement section 11 from the service line side termination area 12 side by an optical connector 18.
On the other hand, when the optical line (optical fiber) of the optical fiber cable 1 drawn into the wiring-side termination area 13 is connected to the optical connector adapter 10 from the wiring-side termination area 13 side, the drop-in side, wiring The optical lines of the optical fiber cables 1 and 5 on the side are switchably connected via an optical connector adapter 10.

In order to terminate the optical fiber cable 1 so as to be connectable to a connector, an optical fiber 22 led out to an end of the optical fiber cable 1 is replaced with a terminated optical fiber having one end terminated by an optical connector 23 so as to be connectable to a connector. By being connected to the other end of the optical connector adapter 24, the optical connector adapter 10 can be connected to a connector. Thereby, the optical connector 23 of the termination optical fiber 24 is connected to the optical connector adapter 1.
0, the optical fibers 17 and 22 of the optical fiber cables 1 and 5 are connected via the optical connector adapter 10. Each of the terminated optical fibers 19 and 24 is
Since switching connection is possible with the optical connector adapter 10, switching connection between the optical fibers 17 and 22 of the optical fiber cables 1 and 5 is thereby possible. The connection portion 25 between the optical fiber 22 and the termination optical fiber 24 of the optical fiber cable 5 is stored in the extra-length storage tray 26 accommodated in the wiring-side termination region 13. It is stored so that it can be taken out with the extra length.

Further, the optical fiber cable 1 is fixed by winding the strength member 3 exposed at the terminal around the strength member fixing pin 27a of the cable fixing portion 27 provided at the lower part of the optical connection box 6. The optical fiber cable 1 is reliably retained by the connection box 6, thereby preventing the tensile force applied to the optical fiber cable 1 from acting on the connection portion 25 with the termination optical fiber 24 and the extra length in the extra length storage tray 26. .
The cable holding part 27 is also provided with a cable holding part 27b for holding and fixing one end of the optical fiber cable.

[0008]

However, in the method for terminating the connector of the optical fiber cable 1 as described above, (1) since the terminating optical fiber 24 is separately required, it is difficult to reduce the cost. In addition, the use of the termination optical fiber 24 increases the number of optical fibers to be accommodated in the optical connection box 6 and the excess storage amount, so that the optical connection box 6 and the excess storage tray 26 are increased in size. (2) There is a problem that the retaining structure (winding of the tensile strength member) against the tensile force is complicated, and the retaining operation is troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and realizes the direct assembling of an optical connector by securing a sufficient tensile strength at the end of an optical fiber cable. An object of the present invention is to provide an optical connector assembling method and an optical fiber cable with a connector, which can simplify a configuration for securing tensile strength.

[0010]

According to the first aspect of the present invention,
The optical fiber is connected to a terminal of an optical fiber cable which is formed by integrating an optical fiber and a tensile strength member which is disposed on both sides of the optical fiber and extends along the longitudinal direction of the optical fiber so as to be connectable to a connector. A method of assembling an optical connector, comprising attaching an optical connector ferrule to the end of the optical fiber that has been led out to the optical fiber cable terminal, and housing and holding the optical connector ferrule at the end of a housing constituting the optical connector,
The strength member exposed at the optical fiber cable terminal is fixed to a strength member fixing portion provided on the optical connector. The invention described in claim 2 is claim 1
In the optical connector assembling method described above, the strength member fixing portion is formed by caulking. According to a third aspect of the present invention, there is provided an optical fiber cable terminal comprising an optical fiber, and a tensile strength member which is disposed on both sides of the optical fiber so as to face each other and extends along the longitudinal direction of the optical fiber. An optical fiber cable with a connector that is assembled, wherein an optical connector ferrule attached to a distal end of the optical fiber protruding into the optical fiber cable terminal is held at a distal end of a housing constituting the optical connector, and the optical fiber The strength member exposed at the cable end is fixed to a strength member fixing portion provided on the optical connector.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIGS. 1A, 1B and 2 show an optical fiber cable with a connector obtained by assembling an optical connector 31 at one end of an optical fiber cable 1. FIG.

Here, as shown in FIGS. 5 (a) to 5 (c) and FIG. 4, for example, the optical fiber cable 1 is provided with an optical fiber 2 such as an optical fiber core and two sides of the optical fiber 2. It has a solid structure in which a tensile strength member 3 that is disposed to face and extends along the longitudinal direction of the optical fiber 2 is embedded in a resin such as polyethylene that constitutes the outer cover 4. The optical fiber cable 1 is formed to have a flat cross section.
Is embedded in the center of the cross section of the outer cover 4, and the tensile strength members 3 are embedded on opposite sides of the outer cover 4 in the cross-section longitudinal direction at positions slightly separated from both sides of the optical fiber 2. The distance between the strength members 3 of the optical fiber cable 1 is about several mm. FIG.
Optical fiber cables 1a to 1c shown in (a) to (c),
The optical fiber cable 1d shown in FIG. 4 has a difference in the type of the optical fiber 2 embedded in the outer cover 4, and FIG.
The optical fiber cable 1a shown in FIG. 5A has a two-core optical fiber ribbon 2a embedded as the optical fiber 2, and the optical fiber cable 1b shown in FIG.
The optical fiber cable 1c shown in FIG. 5C has two optical fibers 2b embedded therein.
Embedded four-core optical fiber ribbon 2c as
The optical fiber cable 1d shown in FIG. 4 has a single-core optical fiber core 2b embedded as the optical fiber 2.
When a configuration common to the optical fiber cables 1a to 1d is described, it may be described as "optical fiber cable 1". When a configuration common to the optical fibers 2a to 2c is described, the configuration may be described as "optical fiber 2".

The optical connector 31 is called an MTRJ type optical connector, and has an optical connector ferrule 33 which terminates an optical fiber so that the optical fiber can be butt-connected. . The optical connector ferrule 33 is urged forward by a spring 34 (see FIG. 2) built into the housing 35 in the butt connection direction, that is, to the lower left side in FIGS. 1A and 1B and the left side in FIG. However, the stopper does not fall out of the housing 35 by a stopper (not shown) provided at the tip of the housing 35.

When the optical connectors 31 are inserted from both sides of the optical connector adapter 36, the optical connector ferrules 33 of the respective optical connectors 31 abut each other, are internally fixed to these optical connector ferrules 33, and are terminated so as to be able to perform a butt connection. Optical fibers are optically connected to each other. The optical connector ferrule 33 is a so-called MT optical connector (MT: Mechanically defined in JIS C5981 or the like).
Transferable). In the above-described connection state, the guide pin holes 33b formed on both sides of the joint end face 33a of the optical connector ferrule 33 on the one optical connector 31 side.
By inserting a guide pin (not shown) projecting from the other optical connector ferrule 33, the optical connector ferrules 33 are precisely positioned, and each optical connector 3
The optical fibers 32 (bare fibers) exposed on the joint end face 33a of the one optical connector ferrule 33 are also precisely positioned and butt-connected. The optical fiber 3 exposed on the joint end face 33a of the optical connector ferrule 33
Reference numeral 2 denotes the optical fiber 2 itself exposed to the end of the optical fiber cable 1 or a bare fiber exposed at the tip of the optical fiber 2 such as the optical fiber core, and the optical fiber 32 exposed at the joint end face 33a. Corresponds to the number of cores of the optical fiber 2 led out to the terminal of the optical fiber cable 1. For example, FIG. 1 illustrates a configuration in which two optical fibers 32 are exposed at the joint end surface 33a. As the optical fiber cable 1, FIG.
As shown in (b), an optical fiber cable 1a, 1b, or the like is used which incorporates two optical fibers 2 (including two single optical fibers 2).

The optical connector 31 inserted into the optical connector adapter 36 has a latch 3 projecting forward from the housing 35 in the direction of insertion into the optical connector adapter 36.
The pull-out is restricted by the engagement protrusion 37b at the tip of the seven being detachably engaged with the engagement portion 38 of the optical connector adapter 36. In order to pull out the optical connector 31 from the optical connector adapter 36, the operating portion 37a of the latch 37 exposed to the outside of the optical connector adapter 36 is pushed toward the housing 35, and the engaging portion 3 of the optical connector adapter 36 is pushed.
After the engagement protrusion 37b is disengaged from 8 and the engagement is released, the pull-out is performed.

As shown in FIG. 2, on the rear end of the housing 35 of the optical connector 31 opposite to the side holding the optical connector ferrule 33, a caulking ring 40 (caulking) constituting a strength member fixing portion 39 is provided. Is built-in. The caulking ring 40 is fixed to the housing 35 and functions as a stop ring for preventing the spring 34 from coming off to the rear end side of the housing 35. The spring 34 urges the optical connector ferrule 33 toward the front of the housing 35 by taking a reaction force to the caulking ring 40. In addition, the optical connector 31 is not limited to the one in which the caulking ring 40 also serving as a stop ring is built in.
It is also possible to adopt a configuration in which a caulking ring and a stop ring made of separate members are housed in a housing.

In order to assemble the optical connector 31 at the end of the optical fiber cable 1, the optical fiber 2 and the tensile strength member 3 (steel wire or the like) are exposed at the end of the optical fiber cable 1, and the optical connector ferrule is attached to the end of the optical fiber 2. The optical connector ferrule 33 is attached to the housing 35.
Is inserted into the housing 35 from the opening on the rear end side, and stored and held at the front end of the housing 35. Next, spring 3
4. The caulking ring 40 is incorporated into the housing 35 from the opening at the rear end of the housing 35. A pin clamp for clamping a guide pin of the optical connector ferrule 33 is interposed between the optical connector ferrule 33 and the spring 34 as necessary. The caulking ring 40 is supported at a predetermined position in the housing 35 by engagement with a predetermined engagement portion in the housing 35 and a stopper inserted separately from the side of the housing 35.

Until the boot 42 is attached to the rear end of the housing 35, the caulking ring 40 is exposed at the rear end of the housing 35, and the tensile strength member 3 is arranged outside the caulking ring 40, and from the outside. The caulking ring 41 (caulking) arranged so as to cover is caulked to fix the strength member 3 between the caulking ring 40 and the caulking ring 40. Thus, the tension member fixing portion 39 is formed by caulking and fixing the tension member 3 by the caulking ring 40 and the caulking ring 41. And optical fiber 2
Before attaching the optical connector ferrule 33 to the distal end, the optical connector 31 is assembled by mounting the boot 42 previously inserted through the optical fiber 2 or the optical fiber cable 1 to the rear end of the housing 35. The caulking ring 40, the spring 34, and the boot 42 are connected to the optical fiber 2 or the optical fiber cable 1 before the optical connector 2 is attached to the end of the optical fiber 2. Insert it through.

FIGS. 1A and 1B show an example in which a total of two optical fibers 32 of the optical fiber cable 1 are terminated by an optical connector ferrule 33 so as to be butt-connectable. 5A and 5B show a state where the optical connector 31 is assembled to the terminals of the optical fiber cables 1a and 1b. In the embodiment described here, the number of optical fibers 32 (the number of cores) is shown. For example, the optical fiber cable 1c shown in FIG. 5C, the optical fiber cable 1d shown in FIG. 4, or various optical fiber cable terminals having different specific configurations of the optical fiber 2 can be used. The same can be applied to the assembly of an optical connector.

(Second Embodiment) As shown in FIG. 3, the present invention relates to an SC type optical connector (SC: Single fiber Coupling optical fiber co.) Defined in JIS C5973.
nnector). The optical connector 51 is different from the optical connector 31 in that an optical connector ferrule 52 which is a capillary made of zirconia ceramic, glass, or the like is used, and a housing 53 or a knob 60 without a latch is used. Here, the housing 53
Indicates a plug frame constituting the SC type optical connector or a configuration similar to the plug frame (in FIG. 3, a plug frame is exemplified). In addition, since the optical connector ferrule 52 of the optical connector 51 mainly corresponds to a butt-connectable termination of the single-core optical fiber 2, the optical connector 51 is, for example, as shown in FIG. A single-core optical fiber 2 (2b) such as an optical fiber
Optical fiber cable 1d embedded in the center of the cross section
The optical fiber cable (indicated by reference numeral 1A in FIG. 3) incorporating the single-core optical fiber 2 is basically assembled into a terminal. As the single-core optical fiber 2, various configurations such as a single-core optical fiber tape or the like can be adopted.

As shown in FIG. 3, the optical fiber cable 1
To assemble the optical connector 51 at the terminal A, the optical fiber 2 and the tensile strength member 3 are exposed at the terminal of the optical fiber cable 1A, an optical connector ferrule 52 is attached to the tip of the optical fiber 2, and the optical connector ferrule 52 is attached to the housing. The housing 53 is inserted into the housing 53 through an opening on the rear end side, and housed and held at the front end of the housing 53. Attachment of the optical connector ferrule 52 to the tip of the optical fiber 2 is insertion and fixing of the optical fiber 2 into a fine hole penetrating the optical connector ferrule 52.

Next, the spring 54 and the stop ring 55 are assembled into the housing 53 from the opening at the rear end of the housing 53. The stop ring 55 is fixed at a predetermined position by an engagement structure inside the housing 53. The spring 54 is housed in the stop ring 55 and urges the optical connector ferrule 52 against the stop ring 55 to urge the optical connector ferrule 52 forward (to the left in FIG. 3). The flange portion 52a provided so as to project
By abutting against the stopper 53a provided near the distal end, further movement forward in the butt connection direction is restricted, so that the housing 53 does not come off from the distal end. The mounting of the boot 57 and the knob 60 (coupling) to the housing 53 is performed after the crimping of the tensile strength member 3 of the optical fiber cable 1A described later is completed, and is removed until then.

The rear end (the right end in FIG. 3) of the stop ring 55 functions as a caulking ring 56. The caulking ring 56 is exposed at the rear end of the housing 53 until the boot 57 is mounted on the rear end of the housing 53 or the knob 60 (coupling) is mounted on the outside of the housing 53. And the tensile member 3
The caulking ring 58 arranged so as to cover from the outside is caulked to fix the strength member 3 between the caulking ring 56 and the caulking ring 56. Thus, the tension member fixing portion 59 is formed by caulking and fixing the tensile member 3 by the caulking ring 56 and the caulking ring 58. Before attaching the optical connector ferrule 52 to the end of the optical fiber 2, a boot 57 previously inserted into the optical fiber 2 or the optical fiber cable 1A is attached to the rear end of the housing 53, and a knob is provided on the outside of the housing 53. By attaching 60 (coupling), the optical connector 51 is assembled. The spring 54, the stop ring 55, and the boot 57 are inserted beforehand into the optical fiber 2 or the optical fiber cable 1A exposed to the end of the optical fiber cable 1A before attaching the optical connector ferrule 52 to the tip of the optical fiber 2. Keep it. Note that the inner caulking ring 56 is not limited to the configuration that is the rear end portion of the stop ring 55, and may be a configuration that is separate from the stop ring 55. However, in this case, the caulking is configured to be independently attached to the housing of the optical connector.

As described in the above embodiments, in the optical connector assembling method according to the present invention, the strength members 3 exposed to the optical fiber cables 1 and 1A are connected to the strength member fixing portions 39 of the optical connectors 31 and 51. , 59, a sufficient retaining force can be obtained between the optical connectors 31, 51 and the optical fiber cables 1, 1A. In a test performed by the inventor, the optical connectors 31 and 51 and the optical fiber cables 1 and 1A were pulled at a normal level of tensile force acting on the optical fiber cables 1 and 1A that were routed above and below the floor by human contact or the like. It was found that a sufficient tensile strength was obtained without any influence on the detained state between 1A. Therefore, a fixing portion (for example, the cable fixing portion 27 illustrated in FIG. 6, the strength member fixing pin 27 a) for fixing the strength member 3 exposed to the optical fiber cable 1 or 1A terminal.
) Is not provided separately from the optical connector for terminating the optical fiber cable 1 or 1A terminal, but a cable gripping part or a fixing part such as a tie wrap, which is often used for fixing an optical fiber cord or the like, is used. By employing the fixing structure used, a sufficient retaining force can be secured. This makes it possible to handle the optical fiber cables 1 and 1A in which the optical connectors 31 and 51 are assembled on the terminal as an optical fiber cable with a connector, such as connector connection to an optical connector such as an optical connector adapter, switching connection, and the like. Workability can be improved. For example, in the optical connection box 6 illustrated in FIG. 6, the connector connection of the optical fiber cables 1 and 1A to the optical connector, the switching connection, and the like are provided without providing a fixing structure such as the cable fixing portion 27 (particularly, the tensile strength fixing pin 27a). Can be easily performed. This eliminates the need for the termination optical fiber 24 required in the structure applied to the optical connection box 6 illustrated in FIG. 6 (for example, the tray 26 for storing the connection portion 25 to the termination optical fiber 24).
Can also be omitted), and the configuration relating to the connector termination of the optical fiber cables 1 and 1A can be greatly simplified and the cost can be reduced. In addition, excellent effects can be obtained such that the optical fiber cables 1 and 1A routed above and below the floor can be directly connected to equipment and the like in the building.

The method for assembling an optical connector according to the present invention is not limited to the above-described embodiment, and it goes without saying that, for example, the specific configuration of the applied optical connector can be changed as appropriate. Further, the strength member fixing portion provided on the optical connector is not limited to a structure in which the strength member is sandwiched by a pair of inner and outer caulking, and a structure in which the strength member is fixed by heat fusion, pressure bonding, adhesion, or the like can also be adopted. is there. In the case of caulking fixing, there is an advantage that the fixing operation can be quickly performed mechanically and the fixing reliability is high. In the case of caulking fixing, for example, it is also possible to adopt a configuration in which a caulking fixing portion is individually provided for each of the plurality of tensile members for each tensile member.
In view of the fact that a plurality of tensile members can be caulked and fixed collectively, it is advantageous to adopt a configuration of caulking and fixing by a pair of inner and outer caulking.

As described above, the optical fiber cable applicable to the present invention is not limited to a configuration in which an optical fiber or a tensile member is embedded and integrated in a resin constituting an outer sheath, but may be an optical fiber and both sides thereof. Optical fiber cables of various cross-sectional structures in which a strength member disposed opposite to the surface are integrated can be adopted.For example, an optical fiber or a strength member is integrated with a core material different from the resin constituting the outer cover. Various configurations can be adopted, such as a configuration in which the core is covered with an outer skin, and a configuration in which a plurality of cores in which optical fibers and strength members are individually embedded are integrated with the outer skin. However, it is advantageous to adopt a configuration in which the optical fiber and the tensile strength member are embedded in the same resin in terms of miniaturization of the cross-sectional structure, cost reduction, stability of bending characteristics, and the like.

[0028]

According to the present invention, the strength member exposed to the optical fiber cable terminal is fixed to the strength member fixing portion of the optical connector, so that the optical connector and the optical fiber cable assembled to the fiber optic cable terminal can be connected. Since a sufficient retaining force (tensile strength) is obtained in between, a configuration for bearing an external force such as a tensile force acting on the optical fiber cable can be greatly simplified, and cost reduction can be realized. For this reason, the optical fiber cable in which the optical connector is assembled to the terminal itself is treated as an optical fiber cable with a connector, and an excellent effect that the connector connection and the switching connection of the optical fiber cable to the optical connector can be easily performed. Play.

[Brief description of the drawings]

1A and 1B are views showing an optical connector applied to a first embodiment of the present invention, wherein FIG. 1A is an overall perspective view, and FIG. 1B is a partially broken view showing a connection state between an optical connector adapter and an optical connector. It is a perspective view.

FIG. 2 is a view showing the first embodiment of the present invention, and is a plan sectional view showing a state where an optical connector is assembled to an optical fiber cable terminal.

FIG. 3 is a view showing a second embodiment of the present invention, and is a plan sectional view showing a state where an SC type optical connector is assembled to an optical fiber cable terminal.

FIG. 4 is a sectional view showing an example of an optical fiber cable applied to a second embodiment of the present invention.

FIGS. 5A and 5B are diagrams showing an example of an optical fiber cable applied to the present invention, wherein FIG. 5A shows an example in which a two-core optical fiber ribbon is buried, and FIG. FIG. 3 (c) shows an example in which a four-core optical fiber ribbon is embedded.

6A and 6B are diagrams showing a conventional method for terminating a connector of an optical fiber cable, wherein FIG. 6A shows the inside of an optical connection box provided with a cable fixing portion for fixing a tensile strength member protruded from the optical fiber cable. FIG. 2B is a front view showing the structure, and FIG. 2B is a side view of FIG.

[Explanation of symbols]

1, 1a to 1d, 1A ... optical fiber cable, 2, 2a
2c: optical fiber, 3: strength member (steel wire), 31: optical connector, 33: optical connector ferrule, 35: housing, 39: strength member fixing portion, 40, 41: caulking, 51: optical connector, 52 … Optical connector ferrule,
53 ... housing, 56, 58 ... caulking, 59 ...
Tensile body fixing part.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuhiro Takizawa 1440 Mutsuzaki, Sakura City, Chiba Prefecture Inside Fujikura Sakura Office (72) Inventor Masaaki Takaya 2-3-1 Otemachi, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Telephone Co., Ltd. (72) Inventor Shinji Nagasawa 2-3-1, Otemachi, Chiyoda-ku, Tokyo F-term (reference) 2H036 JA01 LA00 QA03 QA12 QA33

Claims (3)

[Claims] A light obtained by integrating an optical fiber (2, 2a to 2c) and a tensile strength member (3) disposed opposite to both sides of the optical fiber and extending along the longitudinal direction of the optical fiber. A method for assembling an optical connector (31, 51) for terminating the optical fiber so as to be connectable to a terminal of a fiber cable (1, 1a to 1d, 1A), wherein the optical fiber exits to the optical fiber cable terminal. The optical connector ferrule (33, 52) is attached to the tip of the optical connector, and the optical connector ferrule is housed and held at the tip of the housing (35, 53) constituting the optical connector, and the tensile strength exposed to the optical fiber cable terminal is provided. A method for assembling an optical connector, comprising: fixing a body to a strength member fixing portion (39, 59) provided in the optical connector. 2. The method according to claim 1, wherein the tension member fixing portion is a caulking ring (4).
2. The method for assembling an optical connector according to claim 1, wherein the method comprises: (0, 41, 56, 58). 3. Light obtained by integrating an optical fiber (2, 2a to 2c) with a tensile strength member (3) disposed on both sides of the optical fiber so as to face each other and extending along the longitudinal direction of the optical fiber. An optical fiber cable with a connector in which an optical connector (31, 51) is assembled to a terminal of a fiber cable (1, 1a to 1d, 1A), which is attached to a tip of the optical fiber that is exposed to the optical fiber cable terminal. Optical connector ferrule (3
The housing (3, 52) that constitutes the optical connector.
A connector characterized in that the tensile strength member held at the tip of the optical fiber cable and exposed at the end of the optical fiber cable is fixed to a tensile strength fixing portion (39, 59) provided in the optical connector. With fiber optic cable.