JP2009300500A - Optical fiber holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical fiber holder with which coating is surely and easily removed without damaging a core fiber of an optical fiber and by which the core fiber is held after the removal of the coating. <P>SOLUTION: An optical fiber housing hole and a core fiber housing hole are arranged in alignment, with the exit of the optical fiber housing hole and the entrance of the core fiber housing hole are placed opposite to each other. On the end face on the entrance side of a core fiber placing part, a tip end blade is protruding toward the optical fiber housing hole exit, with the inner face formed as a protective tube for protecting the core fiber. A coating removing blade shaped like a disk as a whole is formed, so that the coating of the optical fiber penetrated through the optical fiber housing hole is continuously stripped by the coating removing blade, wherein the stripped core fiber is held in the core fiber housing hole. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an optical fiber holder.

  Conventionally, when connecting an optical connector to the end of an optical fiber (optical fiber core), the coating (sheath) of the end of the optical fiber is peeled off to expose the optical fiber (glass, bare fiber) Then, the optical fiber strand is cleaned, the optical fiber strand (fiber) is cut, the optical fiber strand is inserted into the connector, and the fiber is fixed.

  Patent Document 1 describes that an optical fiber cutting blade and a coating removal blade are formed in a groove that accommodates an optical fiber.

  Patent Document 2 describes that a guide path (discharge groove) for discharging the removed coating material to the outside is formed in the vicinity of the pair of coating removal blades.

  Patent Document 3 describes combining a stopper and a coating removal blade.

  Patent Document 4 describes that the coating removal blade is rotated.

JP 2007-264505 A JP 2001-311831 A JP-A-62-58205 JP 2006-323424 A

  Conventionally, a pair of blades are used as the coating removal blade for stripping the coating from the optical fiber, and the blade width is adjusted.

  An object of this invention is to provide the optical fiber holder which can peel off a coating | cover reliably and simply without scratching an optical fiber strand, and can hold | maintain after peeling off.

The present invention relates to an optical fiber holder in which an optical fiber storage portion having an optical fiber storage hole and an optical fiber strand placement portion having an optical fiber storage hole are formed.
An optical fiber strand mounting portion housing hole is provided inside the optical fiber housing portion so that the optical fiber strand mounting portion is housed and can be removed. The optical fiber housing hole and the optical fiber strand The accommodation holes are arranged in a straight line, the optical fiber accommodation hole outlet and the optical fiber strand accommodation hole entrance are opposed to each other, and the entrance end face of the fiber strand mounting portion faces the optical fiber accommodation hole exit. The tip blade protrudes, the inner surface is formed as a protective tube for protecting the optical fiber, and the coating removal blade having a disk shape as a whole is formed, and the coating of the optical fiber penetrating the optical fiber housing hole is An optical fiber holder is provided in which an optical fiber strand that is continuously peeled off by a coating removal blade and is exposed is held in the fiber strand housing hole.

  The present invention also provides the optical fiber holder, wherein the coating removing blade includes a protruding blade on a part of the tip blade, and the protruding blade protrudes toward the optical fiber housing hole outlet.

  The present invention also provides an optical fiber holder characterized in that the protective tube has a connection shape continuous with the fiber accommodation hole.

  The present invention is also characterized in that the coating removal blade communicates with the optical fiber strand mounting portion storage hole disposed apart from the optical fiber storage hole outlet, and the optical fiber storage hole outlet and the optical fiber strand There is provided an optical fiber holder characterized in that a discharge hole for discharging the covering material peeled between the mounting portion inlet end is formed in the optical fiber storage portion.

  According to the present invention, the fiber storage portion is constituted by an entrance-side storage portion and an exit-side storage portion that are divided so as to face the optical fiber strand placement portion, and is made detachable and integrated. The side storage portion is integrated with the optical fiber strand placement portion, and the outlet side storage portion and the optical fiber strand placement portion are integrated with and detached from the entrance side storage portion. An optical fiber holder is provided.

  The present invention also provides an optical fiber holder in which the outer diameter of the sheath removing blade is adjusted by an outer diameter adjusting mechanism.

  In the present invention, the coating removal blade is formed into a disk-shaped coating removal blade, and the inner surface is formed as a protective tube for protecting the optical fiber, so that the connection when the coating of the optical fiber is stripped is in the entire circumferential direction. Since the optical fiber strand that has been received in step 1 and the coating has been peeled off is held by the protective tube, the coating can be reliably and easily stripped without scratching the optical fiber strand.

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

FIG. 1 is a diagram showing a configuration of an optical fiber holder according to an embodiment of the present invention.
In FIG. 1, the optical fiber holder 1 includes an optical fiber storage portion 3 and an optical fiber strand placement portion 4. The optical fiber storage unit 3 has a cylindrical shape or a box shape, and has an optical fiber storage hole 5 in the longitudinal direction inside. The optical fiber strand mounting portion 4 has a cylindrical shape, and has an optical fiber strand in the longitudinal direction inside. A storage hole 6 is provided.

  The optical fiber housing hole 5 has an enlarged opening 7 on the entrance side, and the optical fiber 2 is disposed toward the enlarged opening 7. The optical fiber 2 is sometimes referred to as an optical fiber core, and has a shape in which an optical fiber made of glass is covered with a sheath. Although the optical fiber is sometimes referred to as a bare optical fiber or simply an optical fiber, it will be described here as an optical fiber (that is, a glass wire).

  The optical fiber storage unit 3 includes an entrance side storage unit 3A and an exit side storage unit 3B, and is detachable and integrated. An optical fiber strand mounting portion storage hole 9 is formed inside the boundary 8 between the inlet side storage portion 3A and the outlet side storage portion 3B, and the surface of the exit end is aligned in the optical fiber strand mounting portion storage hole 9 Thus, the optical fiber placing part 3B is disposed. In this case, the optical fiber placement unit housing hole 9 and the optical fiber housing hole 5 communicate with each other, and a space 10 is formed on the exit side of the optical fiber housing hole 5. The optical fiber housing portion 3A is formed with a discharge hole 30 that guides the coating material peeled off in communication with the space portion 10 to the outside.

  The optical fiber housing hole 5 and the optical fiber strand housing hole 6 are formed and arranged in a straight line.

  A protruding disc-shaped coating removal blade 11 is formed on the entrance side surface of the optical fiber placing portion 3B. This coating removal blade 11 is formed as a part of the optical fiber strand mounting portion 3A, and is integral with the optical fiber strand mounting portion 3A. Therefore, the protective tube 12 whose inner surface formed inside the coating removal blade 11 protects the optical fiber strand is continuously communicated with the optical fiber housing hole 6, and the optical fiber strand housing hole. 6 may be formed as a part.

  FIG. 2 is a perspective view showing the entire outer shape of the optical fiber strand mounting portion 3B, and FIG. 3 is an enlarged view of the coating removal blade portion.

As shown in these drawings, the sheath removing blade 11 is formed on the inlet side surface 21 of the optical fiber placing portion 3B so as to protrude toward the optical fiber accommodation hole 5 (FIG. 1). The coating removal blade 11 has a disk shape as a whole, and the tip blade 22 is a circumferential tip blade and protrudes toward the optical fiber housing hole 5. The sheath removal blade 11 is formed with a protective tube 12 for an optical fiber, and communicates with the optical fiber housing hole 6, and the outer surface 23 is an inclined surface that gradually increases and inclines toward the outlet side. It is configured to hold the blade firmly.
The inner diameters of the protective tube 12 and the optical fiber housing hole 6 are slightly larger than the outer diameter of the optical fiber.

  As shown in an enlarged view in FIG. 4, the protruding blade 25 may be formed on the outer surface 23 so as to protrude further than the tip blade 22. By forming in this way, the projecting blade 25 becomes a coating tearing blade, and the tip blade 22 functions as a peeling blade.

  In FIG. 5, the optical fiber 2 is inserted into the optical fiber housing hole 5 from the expansion port 7 by a pushing device (not shown), further penetrated and passed through the space 10, and the tip of the optical fiber 2 is covered with the coating removal blade 11. It is applied to the tip blade 22 which is the tip of the tip. The tip blade 22 is close to the outlet of the optical fiber housing hole 5, and the optical fiber 2 is brought into precise contact with the optical fiber strand housing hole 6, that is, the tip blade 22 (coating removal blade 11). Can do.

  Since the tip blade 22 has a circumferential diameter slightly larger than that of the optical fiber 2A in advance, when the optical fiber 2 comes into contact with the tip blade 22, the tip blade 22 has an optical fiber strand and a sheath. Will be located between.

  In this state, when the optical fiber 2 is further pushed by the pushing device, a pushing force is applied, and the coating removal blade 11 causes the optical fiber 2 to be guided by the space portion 10 as a stripped coating material. It is guided to the outside through the space portion 10 and the discharge hole 30, and is cut and discharged.

  In addition, you may make it compress and hold | maintain in a space part (high density), without providing the discharge hole 30. FIG.

  The optical fiber 2 </ b> A from which the sheath has been peeled is pushed into the protective tube 12 and further pushed into the optical fiber housing hole 6. When the sheath is peeled off by the sheath removing blade 11, the optical fiber 2 </ b> A covered with the sheath is linearly held by the inner surface of the protective tube 12 and guided to the optical fiber housing hole 6.

  Thus, since the optical fiber 2A from which the sheath has been peeled is guided without being shaken, the sheath removal by the sheath removing blade 11 is reliably performed. Further, in this case, since the sheath removing blade 11 has a disk shape, the resistance caused by the peeling occurs over the entire disk shape, so that the displacement due to the resistance is eliminated, and the sheath is surely peeled off. .

  The tip portion of the optical fiber 2A from which the sheath has been peeled is taken out from the optical fiber housing hole 6 by a small amount and used for fixing and connection with other optical fiber. In this state, a part of the optical fiber 2 is housed in the optical fiber housing hole 5, and the optical fiber strand 2 </ b> A is housed and held in the optical fiber strand housing hole 6.

  In this way, an optical connector having a ferrule structure is formed. That is, the above-described optical fiber holder is formed as an optical connector having a ferrule function.

  In the above embodiment, the sheath removing blade 11 is configured as a fixed body having a fixed outer diameter. However, the sheath removing blade 11 is provided with an outer diameter adjusting function to adjust the outer diameter to a predetermined outer diameter. You may make it set. Even in this case, a firm structure is adopted so that the outer diameter does not change due to resistance when the coating is peeled off.

  FIG. 6 shows a flowchart of this embodiment. A conventional example is attached for comparison.

  In FIG. 6, an optical fiber is inserted into an optical fiber cut 1 (S1), an optical fiber holder, that is, an optical connector (S2). At this time, the coating is removed by the coating removal blade. Next, the optical fiber strand is held on the optical fiber strand mounting portion, connected to another optical fiber strand, and fixed (S3). In this way, the ferrule is completed.

  Compared with the conventional example, this example does not require processing such as optical fiber coating removal and optical fiber cleaning as pretreatment.

  As described above, the optical fiber strand mounting portion housing hole 6 is provided in the optical fiber housing portion 3 so that the optical fiber strand mounting portion 4 is accommodated and can be taken out. The optical fiber housing hole 3 and the optical fiber housing hole 6 are arranged in a straight line, and the exit of the optical fiber housing hole and the entrance of the optical fiber housing hole are opposed to each other. A tip blade 22 protrudes from the end surface on the inlet side of the fiber strand placement portion 4 toward the exit of the optical fiber housing hole, and the inner surface is formed as a protective tube 12 that protects the optical fiber strand 2A. The coated coating removal blade is formed. As a result, the coating of the optical fiber 2 penetrating the optical fiber housing hole 6 is continuously peeled off by the coating removing blade 11, and the exposed optical fiber strand is held in the fiber strand housing hole.

The figure which shows the structure of the Example of this invention. The perspective view which shows the structure of a coating removal blade. The cross-sectional enlarged view which shows the structure of a coating removal blade. The figure which shows the structure of the coating removal blade used as another plan. The figure which shows the condition of the coating removal by a coating removal blade. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Optical fiber holder (optical connector), 2 ... Optical fiber, 2A ... Optical fiber strand, 3 ... Optical fiber accommodation part, 4 ... Optical fiber strand mounting part, 5 ... Optical fiber accommodation hole, 6 ... Optical fiber Elementary wire housing hole, 9 ... optical fiber strand mounting part housing hole, 10 ... space, 11 ... sheath removal blade, 12 ... protective tube, 22 ... tip blade, 23 ... outer surface, 25 ... projecting blade.

Claims (6)

In an optical fiber holder in which an optical fiber storage portion having an optical fiber storage hole and an optical fiber strand placement portion having an optical fiber storage hole are formed,
An optical fiber strand mounting portion housing hole is provided inside the optical fiber housing portion so that the optical fiber strand mounting portion is housed and can be removed. The optical fiber housing hole and the optical fiber strand The accommodation holes are arranged in a straight line, the optical fiber accommodation hole outlet and the optical fiber strand accommodation hole entrance are opposed to each other, and the entrance end face of the fiber strand mounting portion faces the optical fiber accommodation hole exit. The tip blade protrudes, the inner surface is formed as a protective tube for protecting the optical fiber, and the coating removal blade having a disk shape as a whole is formed, and the coating of the optical fiber penetrating the optical fiber housing hole is An optical fiber holder, wherein an optical fiber strand that has been continuously peeled and exposed by a sheath removing blade is held in the fiber strand housing hole.   The optical fiber holder according to claim 1, wherein the coating removing blade includes a protruding blade on a part of a tip blade, and the protruding blade protrudes toward an exit of the optical fiber housing hole.   2. The optical fiber holder according to claim 1, wherein the protective tube has a connection shape continuous with the fiber accommodation hole.   In Claim 1, the said coating removal blade is connected to the said optical fiber strand mounting part accommodation hole spaced apart from the said optical fiber accommodation hole exit, The said optical fiber accommodation hole exit and the said optical fiber strand mounting An optical fiber holder characterized in that a discharge hole for discharging the covering material peeled between the mounting portion inlet end is formed in the optical fiber storage portion.   2. The fiber storage unit according to claim 1, wherein the fiber storage unit includes an inlet side storage unit and an outlet side storage unit that are divided to face the optical fiber strand mounting unit, and is made detachable and integrated. The storage portion is integrated with the optical fiber strand placement portion, and the outlet side storage portion and the optical fiber strand placement portion are integrated with and removed from the entrance side storage portion. Fiber holder.   6. The optical fiber holder according to claim 1, wherein an outer diameter of the sheath removing blade is adjusted by an outer diameter adjusting mechanism.

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