JP2014199317A - Optical fiber terminal, optical fiber cable with terminal, optical connector, optical fiber cable with connector, manufacturing method of optical fiber cable with terminal, and manufacturing method of optical fiber cable with connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical fiber terminal capable of realizing an optical connector which can be easily assembled, an optical fiber cable with the terminal, the optical connector, an optical fiber cable with the connector, a manufacturing method of the optical fiber cable with the terminal, and a manufacturing method of the optical fiber cable with the connector.SOLUTION: An optical fiber terminal is attached to an end tip of an optical fiber cable having an optical fiber element wire which is obtained by coating the optical fiber with element wire coating. The optical fiber terminal comprises: a cylindrical body through which the optical fiber element wire is inserted; a clamping member for fitting the cylindrical body to clamp the cylindrical body, and fixing the optical fiber element wire to the cylindrical body.

Description

  The present invention relates to an optical fiber terminal, an optical fiber cable with a terminal, an optical connector, an optical fiber cable with a connector, an optical fiber cable with a terminal, and an optical fiber cable with a connector.

  With the increase in the amount of communication information such as control signals, image signals, and audio signals in vehicles in recent years, optical fiber cables are used instead of conventional metal cables in transmission lines used for transmitting information signals. (See Patent Documents 1 and 2). The optical fiber cable is a signal transmission path suitable for high-speed and large-capacity information communication because there is no problem of releasing noise to the surroundings by increasing the communication speed unlike a metal cable.

  The optical fiber cable has an optical connector at its end. The optical connector includes a terminal (optical fiber terminal) having a ferrule attached to the tip of an optical fiber cable, and a housing having a structure for holding the optical fiber terminal and connecting to another optical connector or the like. Yes. On the other hand, an optical connector is also provided in a device that performs communication, and an optical fiber cable and a device that performs communication can be connected by connecting the optical connectors to each other. The connection between the optical fiber cables is also realized by the optical connector. The connection between optical fiber cables is called a Wire to Wire connection.

  Moreover, in the conventional optical connector, when connecting an optical connector and an optical fiber cable, both are fixed by caulking a stop ring and an optical fiber cable, for example, using caulking members such as caulking rings. (See Patent Documents 3 and 4).

JP 2002-107573 A Japanese Patent No. 381396 Japanese Patent Laid-Open No. 11-218642 JP 2004-77603 A

  By the way, such an optical connector is required to be easily assembled.

  The present invention has been made in view of the above, and includes an optical fiber terminal, an optical fiber cable with a terminal, an optical connector, an optical fiber cable with a connector, and an optical fiber cable with a terminal that can realize an optical connector that can be easily assembled. It is an object of the present invention to provide a manufacturing method and a manufacturing method of an optical fiber cable with a connector.

  In order to solve the above-mentioned problems and achieve the object, an optical fiber terminal according to the present invention is an optical fiber terminal attached to the tip of an optical fiber cable having an optical fiber strand in which the optical fiber is covered with a strand coating. A cylindrical body through which the optical fiber is inserted; and a caulking member that is fitted into the cylindrical body and that is caulked to fix the optical fiber element to the cylindrical body. And

  The optical fiber terminal according to the present invention is the optical fiber terminal according to the above invention, wherein the optical fiber cable includes a tensile body disposed along a longitudinal direction of the optical fiber, and a coating that covers the optical fiber and the tensile body. The cylindrical body has a mounting portion for mounting the strength member on the outer peripheral portion, and the caulking member caulks the cylindrical body at the mounting portion, and the light is applied to the cylindrical body. A fiber strand and the strength member are fixed.

  In the optical fiber terminal according to the present invention, in the above invention, the cylindrical body includes a ferrule having an insertion hole through which the optical fiber is inserted, and a ferrule holding member that holds the ferrule, and the caulking member includes: In the ferrule holding member, the cylindrical body is caulked to fix the optical fiber strand to the ferrule.

  An optical fiber cable with a terminal according to the present invention includes an optical fiber coated with an optical fiber covered with a strand, a strength member disposed along a longitudinal direction of the optical fiber, the optical fiber, An optical fiber cable having a covering portion that covers the tensile strength body, and the optical fiber terminal according to the invention attached to a tip of the optical fiber cable.

  The optical connector which concerns on this invention is equipped with the optical fiber terminal of the said invention, and the housing holding the said optical fiber terminal, It is characterized by the above-mentioned.

  An optical fiber cable with a connector according to the present invention includes an optical fiber coated with an optical fiber covered with a strand, a strength member disposed along a longitudinal direction of the optical fiber, the optical fiber and It is provided with the optical fiber cable which has the coating | coated part which coat | covers the said tension body, and the optical connector of the said invention attached to the front-end | tip of the said optical fiber cable.

  The method of manufacturing an optical fiber cable with a terminal according to the present invention includes inserting the optical fiber element of an optical fiber cable having an optical fiber element covered with an optical fiber into a cylindrical body of an optical fiber terminal, A caulking member is fitted into a cylindrical body, and the cylindrical body is caulked by the caulking member to fix the optical fiber strand to the cylindrical body.

  The method of manufacturing an optical fiber cable with a connector according to the present invention includes inserting the optical fiber element of an optical fiber cable having an optical fiber element covered with an optical fiber into a cylindrical body of an optical fiber terminal, A caulking member is fitted into a cylindrical body, the cylindrical body is caulked by the caulking member, the optical fiber strand is fixed to the cylindrical body, and the optical fiber terminal is held by a housing.

  According to the present invention, it is possible to realize an optical connector that can be easily assembled.

FIG. 1 is a schematic configuration diagram of a terminal-equipped optical fiber cable according to the first embodiment. FIG. 2 is a schematic exploded view of the optical fiber cable with terminal shown in FIG. FIG. 3 is a partially cutaway view of the optical fiber cable with a terminal shown in FIG. FIG. 4 is a schematic configuration diagram of an optical fiber. FIG. 5 is a diagram for explaining a method of manufacturing the optical fiber cable with terminal shown in FIG. FIG. 6 is a schematic exploded view of the optical fiber cable with a terminal according to the second embodiment. FIG. 7 is a partially cutaway view of the optical fiber cable with a terminal shown in FIG. FIG. 8 is a schematic exploded view of the optical fiber cable with connector according to the third embodiment.

  Hereinafter, an optical fiber terminal, an optical fiber cable with a terminal, an optical connector, an optical fiber cable with a connector, an optical fiber cable with a terminal, and an optical fiber cable with a connector according to the present invention will be described with reference to the drawings. The embodiment will be described in detail. Note that the present invention is not limited to the embodiments. Moreover, in each drawing, the same code | symbol is attached | subjected suitably to the same or corresponding component. In addition, it should be noted that the drawings are schematic and the ratio of dimensions of each element may be different from the actual one. In addition, there may be a case where the dimensional relationships and ratios are different between the drawings.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of a terminal-equipped optical fiber cable according to Embodiment 1 of the present invention. FIG. 2 is a schematic exploded view of the optical fiber cable with terminal shown in FIG. FIG. 3 is a partially cutaway view of the optical fiber cable with a terminal shown in FIG. As shown in FIGS. 1 to 3, the terminal-equipped optical fiber cable 10 includes an optical fiber cable 1 and an optical fiber terminal 2 attached to the tip of the optical fiber cable 1. The optical fiber terminal 2 includes a ferrule 2a and a ferrule holding member 2b that constitute a cylindrical body, a caulking ring 2c that is a caulking member, and a protective boot 2d.

  As shown in FIG. 2, the optical fiber cable 1 includes an optical fiber 1aa and an optical fiber 1a formed on the outer periphery of the optical fiber 1aa along the longitudinal direction and covering the optical fiber 1aa. 1a, a tensile body 1b arranged along the longitudinal direction on the outer circumference of the optical fiber 1a, and an outer covering portion 1c covering the outer circumference of the tensile body 1b along the longitudinal direction. The tensile body 1b is made of, for example, an aramid resin fiber such as Kevlar (registered trademark), and is disposed so as to surround the outer periphery of the optical fiber 1a. The strand covering portion 1ab is made of, for example, a polyamide resin. Then, the strand covering portion 1ab and the outer covering portion 1c are partially removed at the tip of the optical fiber cable 1, and the optical fiber 1aa, the strand covering portion 1ab, and the strength member 1b are exposed to the outside by a predetermined length. It is supposed to be.

  FIG. 4 is a diagram schematically showing the structure of the optical fiber 1a. As shown in FIG. 4, the optical fiber 1aa includes a core portion 1aaa made of silica glass, and a clad portion 1aab made of silica glass having a refractive index lower than that of the core portion 1aaa formed on the outer periphery of the core portion 1aaa. Is a multimode optical fiber. The core diameter of the core portion 1aaa is, for example, 50 μm to 85 μm, and the cladding diameter of the cladding portion 1aaab is, for example, 250 μm. However, the optical fiber 1aa may be a single mode optical fiber or a so-called HCS (Hard Clad Silica) optical fiber including a core portion 1aaa made of quartz glass and a clad portion 1aab made of hard plastic.

  2 and 3, the ferrule 2a has a cylindrical shape as a whole, and includes a front end surface 2aa, two flange portions 2ab formed along the outer periphery, and a rear end portion 2ac. Yes. The ferrule 2a is made of, for example, polyphenylene sulfide resin (PPS) excellent in heat resistance, mechanical strength, and moldability. Further, as a constituent material of the ferrule 2a, in addition to PPS, the caulking ring 2c enters the plastic region under the caulking conditions of the caulking process described later, such as polybutylene terephthalate resin (PBT) and liquid crystal polymer resin (LCP). However, it is preferable that the material has a compressive strain characteristic that does not break, and can secure a molding accuracy necessary for optical characteristics.

  The ferrule 2a is formed with an insertion hole 2ad through which the distal end portion of the optical fiber cable 1 is inserted so as to penetrate from the distal end surface 2aa to the rear end portion 2ac. The diameter of the insertion hole 2ad is set to be approximately the same as or slightly larger than the outer diameter of the optical fiber 1aa on the distal end surface 2aa side, and is substantially equal to or slightly larger than the outer diameter of the optical fiber 1a in the other portions. It is set large.

  The ferrule holding member 2b has a cylindrical shape as a whole, and includes a hole-like fitting portion 2ba into which the cylindrical rear end portion 2ac of the ferrule 2a is fitted, a placement portion 2bb, and an insertion portion 2bc. It has. The ferrule holding member 2b is also made of PPS, for example. In addition to PPS, the constituent material of the ferrule holding member 2b does not break even if the caulking ring 2c enters the plastic region under the caulking conditions of the caulking process, which will be described later, such as PBT, LCP, and polycarbonate resin (PC). A material having compressive strain characteristics is preferred. The inner diameter of the fitting portion 2ba is set to be substantially the same as or slightly larger than the outer diameter of the cylindrical rear end portion 2ac of the ferrule 2a. Further, in the state where the optical fiber cable with terminal 10 is assembled, the placement portion 2bb places the tensile body 1b exposed from the optical fiber cable 1, and the insertion portion 2bc is the optical fiber strand in the optical fiber cable 1. It is inserted between 1a and strength member 1b. In addition, the mounting part 2bb is formed with a convex part along the outer periphery, and its surface is uneven.

  The caulking ring 2c includes a first caulking portion 2ca and a second caulking portion 2cb. The caulking ring 2c is made of a metal material such as aluminum. The first caulking portion 2ca is a portion for caulking the ferrule holding member 2b. The second caulking portion 2 cb is a portion for caulking the outer covering portion 1 c of the optical fiber cable 1.

  Here, the assembly process of the optical fiber cable with terminal 10 will be described. First, the optical fiber cable 1 is sequentially inserted through the protective boot 2d and the caulking ring 2c. Next, a part of the outer covering portion 1c and the strand covering portion 1ab at the distal end portion of the optical fiber cable 1 are partially removed, and the optical fiber 1aa, the strand covering portion 1ab, and the strength member 1b are respectively externalized by a predetermined length. To expose.

  Next, with the rear end portion 2ac of the ferrule 2a fitted to the fitting portion 2ba of the ferrule holding member 2b, the tip end portion of the optical fiber cable 1 is inserted into the insertion hole 2ad from the rear end portion 2ac side of the ferrule 2a. To do. At this time, the strand covering portion 1ab of the optical fiber strand 1a is located at the position of the rear end portion 2ac of the ferrule 2a and the ferrule holding member 2b.

  Next, the insertion portion 2bc of the ferrule holding member 2b is inserted between the optical fiber 1a and the strength member 1b in the optical fiber cable 1, and the strength member 1b is placed on the placement portion 2bb of the ferrule holding member 2b. Put. At this time, it is preferable to place the tensile member 1b uniformly over the outer periphery of the placement portion 2bb. Thereafter, the first caulking portion 2ca of the caulking ring 2c is fitted to the placement portion 2bb.

  Next, as shown in FIG. 5, a pressure F1 is applied to the first caulking portion 2ca of the caulking ring 2c to caulk the placement portion 2bb together with the tensile body 1b placed on the placement portion 2bb. As a result, the strength member 1b is clamped and fixed between the caulking ring 2c and the ferrule holding member 2b. In addition, since the mounting part 2bb is formed with convex portions along the outer periphery, the surface of the mounting part 2bb is uneven. For this reason, when the tension member 1b is caulked by the caulking ring 2c, the tensile strength member 1b is caught by the convex portion and becomes difficult to be pulled out, so that the optical fiber cable 1 is strongly pulled. In addition, you may provide the convex part engaged with the groove | channel of mounting part 2bb in the inner periphery of the crimping ring 2c.

  Here, when pressure F1 is applied to the caulking ring 2c and the mounting portion 2bb is caulked, the ferrule holding member 2b is deformed by the pressure F1 from the caulking ring 2c, and pressure F2 is applied to the rear end 2ac of the ferrule 2a. This is held and fixed. Further, the rear end 2ac of the ferrule 2a is deformed by the pressure F2 from the ferrule holding member 2b, and the pressure F3 is applied to the optical fiber 1a to hold and fix it. In this way, the caulking ring 2c fixes the optical fiber 1a to the ferrule 2a by caulking the ferrule holding member 2b. Thereafter, pressure is applied to the second caulking portion 2 cb of the caulking ring 2 c to caulk the outer covering portion 1 c of the optical fiber cable 1.

  Thereafter, the protective boot 2d is attached to the caulking ring 2c. As a result, the optical fiber terminal 2 can be attached to the optical fiber cable 1 and the optical fiber cable with terminal 10 can be assembled. The protective boot 2d is made of, for example, rubber or elastic plastic, and prevents the connection portion between the optical fiber terminal 2 and the optical fiber cable 1 from being bent at a bending diameter smaller than the allowable radius. This prevents the optical fiber 1a from being broken.

  Thus, in the optical fiber terminal 2, the caulking ring 2c caulks the ferrule holding member 2b, thereby fixing the strength member 1b and fixing the optical fiber 1a to the ferrule 2a. That is, in the optical fiber terminal 2, the tensile body 1b and the optical fiber 1a can be fixed simultaneously by one caulking operation, so that the process is simplified and the optical fiber cable with terminal 10 is simplified. Can be assembled. Further, for example, even when compared with a method in which the optical fiber 1a is fixed to the ferrule 2a with an adhesive, the use of the optical fiber terminal 2 eliminates the time required to apply the adhesive and to cure the adhesive. can it be done. Therefore, the process is simplified and the work time required for assembly is shortened. As a result, the optical fiber cable with terminal 10 becomes inexpensive.

  In addition, in an optical connector using a stop ring, the stop ring and ferrule need to be separately fixed to the connector housing, so that the fixing structure becomes complicated and the number of parts for fixing is prepared separately. This has led to an increase in the number of parts.

  On the other hand, in the optical fiber terminal 2, since the ferrule 2a and the ferrule holding member 2b are integrated by being fixed by the caulking ring 2c, the integrated optical fiber terminal 2 is fixed to the housing of the connector. Therefore, it is possible to fix with a simple and small number of parts.

  In order to fix the optical fiber 1a to the ferrule 2a by the caulking ring 2c caulking the ferrule holding member 2b, the ferrule 2a and the ferrule holding member 2b can be deformed by caulking pressure, but the caulking pressure The material which has the characteristic which is not damaged by (that is, the compressive strain characteristic which does not break even if the caulking ring 2c enters the plastic region) is preferable. Further, the inner diameter of the fitting portion 2ba of the ferrule holding member 2b is substantially equal to the outer diameter of the cylindrical rear end portion 2ac of the ferrule 2a, or the pressure due to the deformation of the ferrule holding member 2b is transmitted to the ferrule 2. It is preferable to set it slightly larger.

  Furthermore, since the ferrule holding member 2b has a great influence on the connection strength between the optical fiber cable 1 and the optical fiber terminal 2, it is preferable that the ferrule holding member 2b be made of a material having high mechanical strength while being deformable as described above. . On the other hand, with respect to the ferrule 2a, it is preferable to hold and fix the optical fiber 1a with high positional accuracy in order to reduce connection light loss when connected to another optical fiber cable with a terminal. Therefore, it is preferable that the ferrule 2a is made of a material having high molding accuracy while being deformable as described above.

(Embodiment 2)
FIG. 6 is a schematic exploded view of a terminal-equipped optical fiber cable according to Embodiment 2 of the present invention. FIG. 7 is a partially cutaway view of the optical fiber cable with a terminal shown in FIG. As shown in FIGS. 6 and 7, the terminal-attached optical fiber cable 10A according to the second embodiment is a ferrule 2a that forms a cylindrical portion in the terminal-attached optical fiber cable 10 according to the first embodiment shown in FIG. The ferrule holding member 2b is replaced with a ferrule 2Aa.

  The ferrule 2Aa is similar to a configuration in which the ferrule 2a and the ferrule holding member 2b are integrated. That is, the ferrule 2Aa has a cylindrical shape as a whole, and includes a distal end surface 2Aaa, two flange portions 2Aab and 2Aac formed along the outer periphery, an insertion hole 2Aad, a mounting portion 2Aae, Part 2Aaf.

  In the assembled state of the terminal-attached optical fiber cable 10A, the collar portion 2Aac and the placement portion 2Aae place the tensile body 1b exposed from the optical fiber cable 1, and the insertion portion 2Aaf is the light in the optical fiber cable 1. It is inserted between the fiber strand 1a and the strength member 1b. A convex portion is formed along the outer periphery of the mounting portion 2Aae, and the surface thereof is uneven.

  Here, the assembly process of the optical fiber cable with terminal 10A will be described. First, as in the case of the optical fiber cable with terminal 10, the optical fiber cable 1 is sequentially inserted into the protective boot 2d and the caulking ring 2c. Next, a part of the outer covering portion 1c and the strand covering portion 1ab at the distal end portion of the optical fiber cable 1 are partially removed, and the optical fiber 1aa, the strand covering portion 1ab, and the strength member 1b are respectively externalized by a predetermined length. To expose.

  Next, the tip end portion of the optical fiber cable 1 is inserted from the insertion portion 2Aaf side of the ferrule 2Aa into the insertion hole 2Aad. At this time, the strand covering portion 1ab of the optical fiber strand 1a is located at the position of the placement portion 2Aae of the ferrule 2Aa.

  Next, the insertion portion 2Aaf is inserted between the optical fiber element 1a and the strength member 1b in the optical fiber cable 1, and the strength member 1b is placed on the flange portion 2Aac and the placement portion 2Aae. Thereafter, the first caulking portion 2ca of the caulking ring 2c is fitted into the flange portion 2Aac and the mounting portion 2Aae.

  Next, pressure is applied to the first caulking portion 2ca of the caulking ring 2c to caulk the flange portion 2Aac and the mounting portion 2Aae together with the strength member 1b mounted on the flange portion 2Aac and the mounting portion 2Aae. As a result, the strength member 1b is sandwiched and fixed between the caulking ring 2c, the flange portion 2Aac, and the placement portion 2Aae.

  When the caulking portion 2Aac and the mounting portion 2Aae are caulked by applying pressure to the caulking ring 2c, the caulking portion 2Aac and the mounting portion 2Aae are further deformed by the pressure from the caulking ring 2c, and the optical fiber strand 1a is deformed. Apply pressure to grip and fix it. Thus, the caulking ring 2c fixes the optical fiber 1a to the ferrule 2Aa by caulking the flange portion 2Aac and the mounting portion 2Aae. Thereafter, pressure is applied to the second caulking portion 2 cb of the caulking ring 2 c to caulk the outer covering portion 1 c of the optical fiber cable 1.

  Thereafter, the protective boot 2d is attached to the caulking ring 2c. As a result, the optical fiber terminal 2A can be attached to the optical fiber cable 1, and the optical fiber cable with terminal 10A can be assembled.

  Thus, in the optical fiber terminal 2A, the caulking ring 2c caulks the ferrule 2Aa, thereby fixing the strength member 1b and fixing the optical fiber 1a to the ferrule 2Aa. That is, in the optical fiber terminal 2A, the tensile body 1b and the optical fiber 1a can be fixed simultaneously by one caulking operation, so that the process is simplified and the optical fiber cable with terminal 10A can be simplified. It can be assembled and the working time required for the assembly is shortened. Furthermore, since the ferrule 2Aa is similar to the configuration in which the ferrule 2a and the ferrule holding member 2b are integrated, the number of parts constituting the optical fiber terminal 2A is reduced. For this reason, the optical fiber cable with terminal 10A is further inexpensive.

  The ferrule 2Aa is preferably made of a material that can be deformed by caulking pressure, but that is not damaged by caulking pressure. Furthermore, the ferrule 2Aa is preferably made of a material having the necessary mechanical strength and molding accuracy while being deformable as described above. For example, PPS, PBT, LCP and the like are preferable as the constituent material of the ferrule 2Aa.

(Embodiment 3)
FIG. 8 is a schematic exploded view of the optical fiber cable with connector according to Embodiment 3 of the present invention. As shown in FIG. 8, the optical fiber cable with connector 100 according to the third embodiment includes two optical fiber cables with terminals 10 according to the first embodiment shown in FIG. 1 and two optical fibers with terminals. And a male optical connector housing 20 for holding the cable 10.

  The male optical connector housing 20 is used to lock the connectors when connecting the two insertion holes 21a for inserting the two optical fiber cables with terminals 10 and the female optical fiber cable with connector. A housing portion 21 having a latch mechanism 21b and a fixing member 22 having an arm-shaped locking portion 22a for fixing the ferrule 2a of the two optical fiber cables with terminals 10 to the housing portion 21 are provided. The optical fiber cable with connector 100 is assembled as follows. First, the two optical fiber cables with terminals 10 are respectively inserted into the two insertion holes 21 a of the male optical connector housing 20. Next, the fixing member 22 is inserted into the male optical connector housing 20 from the slit provided on the side surface of the male optical connector housing 20. At this time, the locking portion 22a passes between the two two flange portions 2ab of the ferrule 2a, and in the locking hole formed on the opposite side of the slit in the male optical connector housing 20, the locking portion 22a. A locking claw formed at the tip is locked. Thus, the two optical fiber cables with terminals 10 are held and fixed to the male optical connector housing 20, and the optical fiber cable with connectors 100 is assembled.

  Since this optical fiber cable with connector uses the optical fiber cable with terminal 10 according to Embodiment 1 shown in FIG. 1, it is inexpensive and can be assembled easily and in a short time.

  In the above-described embodiment, an optical fiber cable using resin fibers is used as the strength member. However, the optical fiber cable may be a wire strength material made of, for example, metal or FRP.

  In addition, in the optical connector according to the above-described embodiment, if dust, dust, or moisture enters the optical connector during attachment / detachment or the like, connection light loss of the optical connector may increase. Therefore, it is preferable to provide a dustproof or waterproof structure such as a rubber cover in the optical connector.

  Moreover, although the optical fiber cable with a connector according to the third embodiment is obtained by applying the optical fiber terminal according to the first embodiment to a two-core optical fiber cable, the present invention is not limited thereto, and the three-core is provided. The present invention can also be applied to the above multi-core optical fiber cable.

  The present invention is not limited to the above embodiment. What was comprised combining each component mentioned above suitably is also contained in this invention. For example, an optical fiber cable with a connector may be configured using the optical fiber cable with a terminal according to the second embodiment as in the third embodiment. Further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspect of the present invention is not limited to the above-described embodiment, and various modifications can be made.

DESCRIPTION OF SYMBOLS 1 Optical fiber cable 1a Optical fiber strand 1aa Optical fiber 1ab Strand covering part 1aa Core part 1aab Cladding part 1b Strength member 1c Outer covering part 2, 2A Optical fiber terminal 2a, 2Aa Ferrule 2aa, 2Aaa Tip face 2ab, 2Aab, 2Aac 2a Rear end portion 2ad, 2Aad insertion hole 2b Ferrule holding member 2ba Fitting portion 2bb, 2Aae mounting portion 2bc, 2Aaf insertion portion 2c Caulking ring 2ca First caulking portion 2cb Second caulking portion 2d Protective boot 10, 10A terminal Optical fiber cable with connector 20 Male optical connector housing 21 Housing part 21a Insertion hole 21b Latch mechanism 22 Fixing member 22a Locking part 100 Optical fiber cable with connector F1, F2, F3 Pressure

Claims (8)

An optical fiber terminal to be attached to the tip of an optical fiber cable having an optical fiber coated with an optical fiber covered with a strand,
A cylindrical body through which the optical fiber is inserted;
A caulking member that fits into the cylinder, caulks the cylinder, and fixes the optical fiber strand to the cylinder;
An optical fiber terminal comprising: The optical fiber cable includes a tensile body disposed along a longitudinal direction of the optical fiber, and a covering portion that covers the optical fiber and the tensile body,
The cylindrical body has a mounting portion for mounting the tensile body on an outer peripheral portion,
2. The optical fiber terminal according to claim 1, wherein the caulking member caulks the cylindrical body in the mounting portion to fix the optical fiber and the tensile strength body to the cylindrical body. The cylinder includes a ferrule having an insertion hole for inserting the optical fiber, and a ferrule holding member for holding the ferrule.
3. The optical fiber terminal according to claim 1, wherein the caulking member caulks the cylindrical body in the ferrule holding member to fix the optical fiber strand to the ferrule. 4. An optical fiber coated with an optical fiber coating; a tensile body disposed along a longitudinal direction of the optical fiber; and a coating portion covering the optical fiber and the tensile body. Fiber optic cable,
The optical fiber terminal according to any one of claims 1 to 3, attached to a tip of the optical fiber cable;
An optical fiber cable with a terminal, comprising: The optical fiber terminal according to any one of claims 1 to 3,
A housing for holding the optical fiber terminal;
An optical connector comprising: An optical fiber coated with an optical fiber coating; a tensile body disposed along a longitudinal direction of the optical fiber; and a coating portion covering the optical fiber and the tensile body. Fiber optic cable,
The optical connector according to claim 5 attached to a tip of the optical fiber cable;
An optical fiber cable with a connector, comprising: Inserting the optical fiber strand of an optical fiber cable having an optical fiber covered with an optical fiber coating with a strand of optical fiber through a cylindrical body of an optical fiber terminal;
A caulking member is fitted to the cylinder, and the optical fiber is fixed to the cylinder by caulking the cylinder with the caulking member;
A method for manufacturing a terminal-attached optical fiber cable. Inserting the optical fiber strand of an optical fiber cable having an optical fiber covered with an optical fiber coating with a strand of optical fiber through a cylindrical body of an optical fiber terminal;
A caulking member is fitted to the cylindrical body, and the optical fiber is fixed to the cylindrical body by caulking the cylindrical body with the caulking member,
Holding the optical fiber terminal in a housing;
A method for manufacturing an optical fiber cable with a connector.

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