JP2014071281A - Optical fiber cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical fiber cutter which offers a consistent shape of a cutting surface and ease of use.SOLUTION: An optical fiber cutter 10A includes; a fiber holder 20 for holding an optical fiber 12; a cutter main body 13 on which the fiber holder 20 is mounted; clamping members 14-17 which are movably mounted on the cutter main body 13 in a direction that crosses an axial direction of the optical fiber 12 to clamp the optical fiber 12; an anvil 18 which is movably mounted on the cutter main body in a direction that crosses the axial direction of the optical fiber 12 and is pressed against the optical fiber 12 to bend the same; and a blade member 19 provided on the cutter main body 13 to scratch the optical fiber 12. The optical fiber cutter 10A has an interlocking mechanism which allows installation of the fiber holder 20 on the cutter main body 13 to automatically trigger the clamping action on the optical fiber 12 by the clamping members 14, 15 and the pressing action against the optical fiber 12 by the anvil 18.

Description

  The present invention relates to an optical fiber cutter.

  Patent Document 1 describes an automatic cutting device for an optical fiber core wire. The cutting device includes a clamp member that holds the optical fiber core wire from which the coating has been removed, a cutting blade that scratches the optical fiber core wire, and a pillow member that applies a bending load to the optical fiber core wire from the opposite side of the wound portion. (Anvil).

JP-A-6-186436

  In general, when cutting an optical fiber, first attach the optical fiber to the body of the optical fiber cutter, then clamp (grip) both sides of the planned cutting position of the optical fiber, and then cut the optical fiber A series of operations such as bending the optical fiber by pressing the anvil at or near the planned position is required. Further, the operation of the optical fiber cutter for performing these operations requires further simplicity.

  The present invention has been made in view of such problems, and an object thereof is to provide an optical fiber cutter that is easy to operate.

  In order to solve the above-described problems, an optical fiber cutter according to the present invention intersects with the fiber holder that holds the optical fiber to be cut, the cutter main body to which the fiber holder is attached, and the axial direction of the optical fiber in the cutter main body. A clamp member that clamps the optical fiber at the first clamp position and the second clamp position of the optical fiber, and a cutter member that is movable in the direction intersecting the axial direction of the optical fiber. An anvil that is pressed against a pressing position between a first clamp position and a second clamp position of the fiber to impart bending to the optical fiber, and a first clamp position and a second clamp of the optical fiber that are provided on the cutter body. A blade member that scratches the planned cutting position between the position and the position of the fiber holder on the cutter body. , Characterized in that it comprises an interlocking mechanism for clamping the optical fiber by the clamp member, and the pressing of the anvil to the optical fiber automatically.

  This optical fiber cutter includes an interlocking mechanism that automatically operates the clamp member and the anvil in conjunction with the attachment of the fiber holder to the cutter body. Thereby, since a series of operation | movement is performed only by mounting | wearing a fiber holder with a cutter main body, operation can be simplified.

  Further, the optical fiber cutter may be characterized in that the fiber holder is attached to the cutter body in a state where at least a part of the fiber holder is movable in a predetermined direction. Accordingly, the above-described interlocking mechanism can be suitably configured by using a force that moves at least a part of the fiber holder. In this case, the optical fiber cutter is attached to the cutter body so that the fiber holder can move in a predetermined direction with the first part holding the optical fiber, and the first part is slidably supported in the predetermined direction. When the fiber holder is attached to the cutter body, the cutter body may lock the first part during the movement of the second part. Further, the predetermined direction may be along the axial direction of the optical fiber.

  The optical fiber cutter may be characterized in that the interlocking mechanism includes a mechanism for converting movement of at least a part of the fiber holder in a predetermined direction into movement of the clamp member in a direction intersecting the axial direction of the optical fiber. Accordingly, it is possible to suitably realize a mechanism that automatically clamps the optical fiber by the clamp member in conjunction with the attachment of the fiber holder to the cutter body.

  In the optical fiber cutter, the interlocking mechanism may include a mechanism that converts movement of at least a part of the fiber holder in a predetermined direction into movement of an anvil in a direction crossing the axial direction of the optical fiber. Accordingly, it is possible to suitably realize a mechanism that automatically presses the anvil against the optical fiber in conjunction with the attachment of the fiber holder to the cutter body.

  In the optical fiber cutter, the blade member is provided so as to be movable in the direction intersecting the axial direction of the optical fiber in the cutter body, and the movement of at least a part of the fiber holder in the predetermined direction is converted into the movement of the blade member. A mechanism may be further provided. Thereby, the blade member can be reliably brought into contact with the optical fiber.

  The optical fiber cutter further includes a pair of rollers that sandwich the optical fiber cut piece, and further includes a cut piece discharge unit that feeds the cut piece to the outside of the cutter body, and moves at least a portion of the fiber holder in a predetermined direction. A mechanism for converting to rotation may be further provided. Thereby, the cut piece (chip) of an optical fiber can be collect | recovered easily. Further, in this case, the cut piece discharging portion may have a mechanism that converts the movement of at least a part of the fiber holder in a predetermined direction into the movement of at least one of a pair of rollers in a direction intersecting the axial direction of the optical fiber. preferable.

  According to the present invention, an optical fiber cutter that can be easily operated can be provided.

FIG. 1 is a diagram schematically showing a configuration of an optical fiber cutter according to an embodiment of the present invention. FIG. 2 is a diagram schematically showing the configuration of the fiber holder. FIG. 3 is a diagram illustrating an example of a mechanism that automatically clamps an optical fiber by a clamp member in conjunction with the mounting of the fiber holder. FIG. 4 is a diagram showing an example of a mechanism for automatically clamping an optical fiber by a clamp member in conjunction with the mounting of the fiber holder. FIG. 5 is a diagram illustrating an example of a mechanism that automatically clamps an optical fiber by a clamp member in conjunction with the mounting of the fiber holder. FIG. 6 is a diagram showing a mechanism for automatically bending the optical fiber by the anvil in conjunction with the mounting of the fiber holder. FIG. 7 is a diagram showing a mechanism for automatically bending the optical fiber by the anvil in conjunction with the mounting of the fiber holder. FIG. 8 is a diagram showing a mechanism for automatically moving the blade member in conjunction with the mounting of the fiber holder. FIG. 9 is a diagram showing a mechanism for automatically moving the blade member in conjunction with the mounting of the fiber holder. FIG. 10 is a diagram showing a mechanism for automatically moving the blade member in conjunction with the mounting of the fiber holder. FIG. 11 is a diagram showing a mechanism for automatically moving the blade member in conjunction with the mounting of the fiber holder. FIG. 12 is a diagram illustrating the configuration of the cut piece discharge unit (before cutting the optical fiber). FIG. 13 is a diagram illustrating a configuration of the cut piece discharge unit (after the optical fiber is cut).

  Embodiments of an optical fiber cutter according to the present invention will be described below in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a diagram schematically showing a configuration of an optical fiber cutter 10A according to an embodiment of the present invention. As shown in FIG. 1, an optical fiber cutter 10A of this embodiment is an apparatus for cutting an optical fiber 12 to be cut, and includes a fiber holder 20 that holds the optical fiber 12, and a fiber holder 20 A cutter main body 13 to be mounted, upper clamp members 14 and 15, lower clamp members 16 and 17, an anvil 18, and a blade member 19 are provided.

  The upper clamp member 14 is disposed in the cutter body 13 so as to face the lower clamp member 16 and is movable in a direction intersecting the axial direction of the optical fiber 12 (preferably a direction orthogonal to the axial direction of the optical fiber 12). Is provided. The upper clamp member 14 clamps (grips) the optical fiber 12 by sandwiching the first clamp position F <b> 1 of the optical fiber 12 with the lower clamp member 16. Similarly, the upper clamp member 15 is disposed so as to face the lower clamp member 17 and is movable in a direction intersecting the axial direction of the optical fiber 12 (preferably a direction orthogonal to the axial direction of the optical fiber 12). Is provided. The upper clamp member 15 clamps (grips) the optical fiber 12 by sandwiching the second clamp position F2 of the optical fiber 12 between the upper clamp member 15 and the lower clamp member 17.

  The anvil 18 is provided in the cutter body 13 so as to be movable in a direction intersecting with the axial direction of the optical fiber 12 (preferably in a direction orthogonal to the axial direction of the optical fiber 12). The anvil 18 is bent against the optical fiber 12 by being pressed against the pressing position F3 between the first clamp position F1 and the second clamp position F2 of the optical fiber 12.

  The blade member 19 is provided at a predetermined position in the cutter body 13 and scratches the planned cutting position F4 between the first clamp position F1 and the second clamp position F2 of the optical fiber 12. In the present embodiment, the planned cutting position F4 coincides with the pressing position F3, but the planned cutting position F4 and the pressing position F3 may be different from each other. In particular, when a cut surface that is inclined with respect to a surface perpendicular to the axial direction of the optical fiber 12 is formed, the planned cutting position F4 may be set at a position slightly away from the pressing position F3. Further, the blade member 19 may be fixed at a predetermined position of the cutter body 13 or in a direction intersecting the axial direction of the optical fiber 12 (a direction toward the optical fiber 12 or a direction crossing the optical fiber 12). It may be provided so as to be movable.

  The fiber holder 20 is attached to the cutter body 13 in a state where at least a part of the fiber holder 20 is movable in a predetermined direction A (preferably, a direction along the axial direction of the optical fiber 12). For example, the fiber holder 20 of the present embodiment has a first portion 21 and a second portion 22. The first portion 21 is a portion that holds the optical fiber 12, and holds the optical fiber 12 outside the area sandwiched between the first clamp position F1 and the second clamp position F2, as shown in FIG. To do. The second portion 22 is attached to the cutter body 13 so as to be movable in the predetermined direction A. For example, the second portion 22 is inserted into a folder insertion portion (not shown) extending in the predetermined direction A in the cutter body 13. Further, the second portion 22 supports the first portion 21 so as to be slidable along the predetermined direction A.

  Here, FIG. 2 is a diagram schematically showing the configuration of the fiber holder 20 of the present embodiment. As described above, the fiber holder 20 has the first portion 21 and the second portion 22. The first portion 21 is a portion that holds the optical fiber 12 and is slidably supported on the second portion 22. Thereby, regardless of the movement of the second portion 22 in the predetermined direction A, the first portion 21 can be stopped at a desired position. In one example, when the fiber holder 20 is attached to the cutter main body 13, a part of the cutter main body 13 abuts on the first part 21 in the middle of the movement of the second part 22, thereby the first part 21. Lock. As shown in FIG. 2, the first portion 21 and the second portion 22 are preferably connected to each other by an elastic member such as a coil spring 23. Thereby, when removing the fiber holder 20 from the cutter main body 13, the 1st part 21 can be automatically returned to the original position.

  The optical fiber cutter 10 </ b> A of the present embodiment automatically clamps the optical fiber 12 by the clamp members 14 to 17 and presses the anvil 18 against the optical fiber 12 in conjunction with the mounting of the fiber holder 20 to the cutter body 13. An interlocking mechanism is provided. Hereinafter, various examples of mechanisms provided in such an interlocking mechanism will be specifically described.

  FIG. 3 is a diagram showing a mechanism 30 </ b> A that automatically clamps the optical fiber 12 by the clamp members 14 to 17 in conjunction with the mounting of the fiber holder 20. In this mechanism 30 </ b> A, the movement of the second portion 22 of the fiber holder 20 in the predetermined direction A is converted into the movement of the upper clamp members 14 and 15 in the direction intersecting the axial direction of the optical fiber 12. FIG. 3 shows a state after the upper clamp members 14 and 15 have moved, and a virtual line shows a state before the movement.

  As shown in FIG. 3, the mechanism 30A includes a link member 31 that can rotate around a shaft 31a, and elastic members 32 and 33 such as coil springs. The link member 31 has portions 31b and 31c extending in different directions from the shaft 31a. The portion 31b intersects the movement path of the portion 22a of the second portion 22 of the fiber holder 20, and moves about the shaft 31a by being pushed into the portion 22a moving along the predetermined direction A. The portion 31c extends on the upper clamp members 14 and 15, and follows the movement of the portion 31b and moves about the shaft 31a. Upper clamp members 14 and 15 are connected to the tip of the portion 31c via an elastic member 32. When the portion 31c moves about the shaft 31a, the upper clamp members 14 and 15 are moved in the axial direction of the optical fiber 12. And the optical fiber 12 is clamped.

  The movement of the upper clamp members 14 and 15 may be assisted by hydraulic pressure. Further, after the upper clamp members 14 and 15 clamp the optical fiber 12, the movement of the portion 31 c is absorbed by the elastic member 32, so that the movement of the second portion 22 of the fiber holder 20 is not hindered. Further, after the fiber holder 20 is taken out, the link member 31 and the upper clamp members 14 and 15 are returned to their original positions by the action of the elastic member 33 provided between the portion 31b or 31c and the cutter body 13. .

  4 and 5 are diagrams showing mechanisms 30B and 30C that automatically clamp the optical fiber 12 by the clamp members 14 to 17 in conjunction with the mounting of the fiber holder 20, respectively. In these mechanisms 30 </ b> B and 30 </ b> C, the movement of the second portion 22 of the fiber holder 20 in the predetermined direction A is converted into the movement of the clamp members 14 and 15 in the direction intersecting the axial direction of the optical fiber 12. 4 and 5 show a state after the clamp members 14 and 15 have moved, and an imaginary line shows a state before the movement.

  The mechanism 30B shown in FIG. 4 has a cam structure. That is, the clamp members 14 and 15 and the cam follower 36 are connected to each other via the connecting member 37, and the cam follower 36 is in contact with the surface of the second portion 22 of the fiber holder 20. The surface of the second portion 22 includes a cam portion 22b. When the cam follower 36 moves along the surface of the cam portion 22b in a direction crossing the axial direction of the optical fiber 12, it is clamped in accordance with the movement of the cam follower 36. The members 14 and 15 also move in the same direction. Accordingly, the clamp members 14 and 15 are pressed against the optical fiber 12 to clamp the optical fiber 12. The connecting member 37 and the cutter body 13 are preferably connected to each other via an elastic member 38 such as a coil spring. Thereby, the cam follower 36 is biased toward the surface of the second portion 22, and can follow the surface of the second portion 22 with high accuracy.

  As shown in FIG. 5, the mechanism 30 </ b> C includes a link member 34 that can rotate around a shaft 34 a and an elastic member 35 such as a coil spring. The link member 34 includes portions 34b and 34c extending in different directions from the shaft 34a. The portion 34b intersects the movement path of the portion 22c of the second portion 22 of the fiber holder 20, and moves about the axis 34a by being pushed into the portion 22c moving along the predetermined direction A. In addition, it is preferable that the cam follower 34d is provided in the front-end | tip part of the part 34b. The portion 34c extends on the anvil 18 and moves around the axis 34a following the movement of the portion 34b. The clamp members 14 and 15 are connected to the tip of the portion 34c. When the portion 34c moves around the shaft 34a, the clamp members 14 and 15 move in a direction intersecting the axial direction of the optical fiber 12. The optical fiber 12 is pressed against and clamps the optical fiber 12. After the fiber holder 20 is taken out, the clamp members 14 and 15 return to their original positions by the action of the elastic member 35 provided between the portion 34b or 34c and the cutter body 13.

  FIG. 6 is a view showing a mechanism 40 </ b> A that automatically bends the optical fiber 12 by the anvil 18 in conjunction with the mounting of the fiber holder 20. In this mechanism 40 </ b> A, the movement of the second portion 22 of the fiber holder 20 in the predetermined direction A is converted into the movement of the anvil 18 in a direction intersecting the axial direction of the optical fiber 12. FIG. 6 shows a state after the anvil 18 has moved, and a virtual line shows a state before the movement.

  The mechanism 40A shown in FIG. 6 has a cam structure. That is, the anvil 18 and the cam follower 41 are connected to each other via the connecting member 42, and the cam follower 41 is in contact with the surface of the second portion 22 of the fiber holder 20. The surface of the second portion 22 includes a cam portion 22d. When the cam follower 41 moves along the surface of the cam portion 22d in a direction crossing the axial direction of the optical fiber 12, the anvil is moved in accordance with the movement of the cam follower 41. 18 also moves in the same direction. Thereby, the anvil 18 is pressed against the optical fiber 12, and the optical fiber 12 is bent. The connecting member 42 and the cutter body 13 are preferably connected to each other via an elastic member 43 such as a coil spring. Thereby, the cam follower 41 is biased toward the surface of the second portion 22, and can follow the surface of the second portion 22 with high accuracy.

  FIG. 7 is a view showing a mechanism 40 </ b> B that automatically bends the optical fiber 12 by the anvil 18 in conjunction with the mounting of the fiber holder 20. Also in this mechanism 40 </ b> B, the movement of the second portion 22 of the fiber holder 20 in the predetermined direction A is converted into the movement of the anvil 18 in the direction intersecting the axial direction of the optical fiber 12. FIG. 7 shows a state after the anvil 18 has moved, and a virtual line shows a state before the movement.

  As shown in FIG. 7, the mechanism 40 </ b> B includes a link member 44 that can rotate around a shaft 44 a and an elastic member 45 such as a coil spring. The link member 44 has portions 44b and 44c extending in different directions from the shaft 44a. The portion 44b intersects the movement path of the portion 22e of the second portion 22 of the fiber holder 20, and moves about the axis 44a by being pushed into the portion 22e moving along the predetermined direction A. In addition, it is preferable that the cam follower 44d is provided in the front-end | tip part of the part 44b. The portion 44c extends on the anvil 18 and moves about the axis 44a following the movement of the portion 44b. The anvil 18 is connected to the tip of the portion 44c, and when the portion 44c moves around the axis 44a, the anvil 18 moves in a direction crossing the axial direction of the optical fiber 12 and presses against the optical fiber 12. It is done. After the fiber holder 20 is taken out, the anvil 18 returns to the original position by the action of the elastic member 45 provided between the portion 44b or 44c and the cutter body 13.

  When the interlocking mechanism includes any of the mechanisms 30A to 30C described above and the mechanism 40A or 40B, the clamp of the optical fiber 12 and the anvil 18 are interlocked with the attachment of the fiber holder 20 to the cutter body 13. The pressing can be suitably performed.

  In the optical fiber cutter 10A of the present embodiment, the blade member 19 is provided so as to be movable in a direction intersecting the axial direction of the optical fiber 12 (a direction toward the optical fiber 12 or a direction crossing the optical fiber 12). Also good. In that case, it is preferable that the optical fiber cutter 10 </ b> A further includes a mechanism for converting the movement of at least a part (for example, the second part 22) of the fiber holder 20 in the predetermined direction A into the movement of the blade member 19. Such a mechanism is suitably realized, for example, by replacing the anvil 18 with the blade member 19 in the mechanism 40A or the mechanism 40B described above.

  8 and 9 are diagrams showing mechanisms 60A and 60B that automatically move the blade member 19 in conjunction with the attachment of the fiber holder 20, respectively. In the mechanism 60 </ b> A shown in FIG. 8, the movement of the second portion 22 of the fiber holder 20 in the predetermined direction A is performed in a direction intersecting the axial direction of the optical fiber 12 (direction opposite to the moving direction of the anvil 18). The movement is converted into the movement of the blade member 19. Further, in the mechanism 60B shown in FIG. 9, the blade member 19 in the direction intersecting both the axial direction of the optical fiber 12 and the moving direction of the anvil 18 in the movement of the second portion 22 of the fiber holder 20 in the predetermined direction A. Convert to move. 8 and 9 show a state after the blade member 19 has moved, and an imaginary line shows a state before the movement.

  The mechanisms 60A and 60B shown in FIGS. 8 and 9 have a cam structure. That is, the blade member 19 and the cam follower 61 are connected to each other via the connecting member 62, and the cam follower 61 is in contact with the surface of the second portion 22 of the fiber holder 20. Specifically, in FIG. 8, the cam follower 61 is in contact with the lower surface of the second portion 22, and in FIG. 9, the cam follower 61 is in contact with the side surface of the second portion 22. In FIG. 8, the lower surface of the second portion 22 includes a cam portion 22f, and in FIG. 9, the side surface of the second portion 22 includes a cam portion 22g. A direction in which the cam follower 61 intersects the axial direction of the optical fiber 12 along the surfaces of the cam portions 22f and 22g (in FIG. 8, the direction opposite to the moving direction of the anvil 18, in FIG. 9, the axial direction of the optical fiber 12 and When the anvil 18 moves in a direction intersecting both directions, the blade member 19 also moves in the same direction as the cam follower 61 moves. Thereby, the blade member 19 contacts the optical fiber 12, and the optical fiber 12 is damaged. The connecting member 62 and the cutter body 13 are preferably connected to each other via an elastic member 63 such as a coil spring. Accordingly, the cam follower 61 is biased toward the surface of the second portion 22 and can follow the surface of the second portion 22 with high accuracy.

  10 and 11 are diagrams showing mechanisms 60C and 60D that automatically move the blade member 19 in conjunction with the attachment of the fiber holder 20, respectively. In the mechanism 60 </ b> C shown in FIG. 10, the movement of the second portion 22 of the fiber holder 20 in the predetermined direction A is in a direction crossing the axial direction of the optical fiber 12 (a direction opposite to the moving direction of the anvil 18). The movement is converted into the movement of the blade member 19. Further, in the mechanism 60B shown in FIG. 11, the blade member 19 in the direction crossing both the axial direction of the optical fiber 12 and the moving direction of the anvil 18 is caused to move the second portion 22 of the fiber holder 20 in the predetermined direction A. Convert to move. 10 and 11 show a state after the blade member 19 has moved, and an imaginary line shows a state before the movement.

  The mechanisms 60C and 60D shown in FIGS. 10 and 11 include a link member 64 that can rotate around a shaft 64a and an elastic member 65 such as a coil spring. The link member 64 has portions 64b and 64c extending in different directions from the shaft 64a. In FIG. 10, the portion 64 b intersects the movement path of the portion 22 h provided on the lower surface of the second portion 22 of the fiber holder 20. In FIG. 11, the portion 64 b intersects the movement path of the portion 22 i provided on the side surface of the second portion 22 of the fiber holder 20. The portion 64b is moved about the shaft 64a by being pushed into the portion 22h or 22i moving along the predetermined direction A. In addition, it is preferable that the cam follower 64d is provided in the front-end | tip part of the part 64b. The portion 64c moves around the axis 64a following the movement of the portion 64b. The blade member 19 is connected to the tip of the portion 64c, and when the portion 64c moves around the shaft 64a, the blade member 19 moves in a direction intersecting the axial direction of the optical fiber 12 (in FIG. 10, the movement of the anvil 18). It moves in a direction opposite to the direction (in FIG. 11, a direction intersecting both the axial direction of the optical fiber 12 and the moving direction of the anvil 18) to contact the optical fiber 12 and damage the optical fiber 12. After the fiber holder 20 is taken out, the blade member 19 returns to the original position by the action of the elastic member 65 provided between the portion 64b or 64c and the cutter body 13.

  The operation of the optical fiber cutter 10A having the above configuration is as follows. First, the fiber holder 20 holding the optical fiber 12 to be cut is attached to the cutter body 13. At this time, during the movement of the second portion 22 of the fiber holder 20, the first portion 21 comes into contact with and locks a part of the cutter body 13. Thereafter, the second portion 22 further moves along the predetermined direction A while the elastic member 23 shown in FIG.

  The movement of the second portion 22 is converted into the movement of the upper clamp members 14 and 15 by any of the mechanisms 30A to 30C shown in FIGS. 3 to 5, and the upper clamp members 14 and 15 are connected to the optical fiber. 12 is clamped. Subsequently, when the second portion 22 further moves along the predetermined direction A, the movement of the second portion 22 is changed to the movement of the anvil 18 by the mechanism 40A shown in FIG. 6 or the mechanism 40B shown in FIG. Converted and the anvil 18 is pressed against the optical fiber 12. In this way, the optical fiber 12 is bent, whereby the optical fiber 12 comes into contact with the blade member 19 and the optical fiber 12 is cut. Alternatively, after bending is applied to the optical fiber 12, the blade member 19 is moved in a direction intersecting the axial direction of the optical fiber 12 by any of the mechanisms 60A to 60D shown in FIGS. The blade member 19 contacts the optical fiber 12, and the optical fiber 12 is cut. When the blade member 19 is movably provided, the blade member 19 may be moved after being clamped by the upper clamp members 14 and 15 and before being bent by the anvil 18, or The bending may be performed after the bending by 18.

  As described above, the optical fiber cutter 10A of the present embodiment includes the interlocking mechanism that automatically operates the upper clamp members 14 and 15 and the anvil 18 in conjunction with the mounting of the fiber holder 20 on the cutter body 13. ing. Thereby, since a series of operation | movement is performed only by mounting | wearing with the fiber holder 20 to the cutter main body 13, operation can be simplified. Furthermore, the effect of stabilizing the shape of the cut surface by a constant operation every time can be expected regardless of the difference in force applied by the person who operates the optical fiber cutter 10A.

  Further, as in the present embodiment, it is preferable that the fiber holder 20 is attached to the cutter body 13 such that at least a portion thereof (the second portion 22 in the present embodiment) is movable in the predetermined direction A. Thereby, the interlocking mechanism mentioned above can be suitably constituted using the force which the part concerned of fiber holder 20 moves.

  Further, as in the present embodiment, the interlocking mechanism converts the movement of the at least part of the fiber holder 20 in the predetermined direction A into the movement of the upper clamp members 14 and 15 in the direction intersecting the axial direction of the optical fiber 12. It is preferable to include any of mechanisms 30A to 30C. Thereby, it is possible to suitably realize a mechanism for automatically clamping the optical fiber 12 in conjunction with the attachment of the fiber holder 20 to the cutter body 13.

  Further, as in this embodiment, the interlocking mechanism is a mechanism 40A or 40B that converts the movement of the at least part of the fiber holder 20 in the predetermined direction A into the movement of the anvil 18 in the direction intersecting the axial direction of the optical fiber 12. It is preferable to contain. Accordingly, it is possible to suitably realize a mechanism that automatically presses the anvil 18 against the optical fiber 12 in conjunction with the attachment of the fiber holder 20 to the cutter body 13.

  The optical fiber cutter 10 </ b> A may further include any of mechanisms 60 </ b> A to 60 </ b> D that convert the movement of the fiber holder 20 in the predetermined direction A into the movement of the blade member 19. Thereby, the blade member 19 can be reliably brought into contact with the optical fiber 12.

(Modification)
The optical fiber cutter 10 </ b> A of the above embodiment may further include a mechanism for automatically sending a cut piece (chip) of the optical fiber 12 to the outside of the cutter body 13. 12 and 13 are diagrams showing the configuration of the cut piece discharging section 50 as such a mechanism. The cut piece discharging unit 50 converts the movement of at least a part of the pair of rollers 51 and 52 that sandwich the cut piece of the optical fiber 12 and the fiber holder 20 (the second part 22 in this embodiment) into rotation of the roller 51. And a mechanism (a rack gear 53, a pinion gear 54, and a one-way clutch 55).

  The rack gear 53 is fixed to the second portion 22 of the fiber holder 20. The teeth of the rack gear 53 are arranged on a straight line along the moving direction (predetermined direction A) of the second portion 22. The pinion gear 54 meshes with the rack gear 53, and the parallel movement amount of the second portion 22 is converted into the angular displacement amount of the pinion gear 54. The one-way clutch 55 meshes with the pinion gear 54 and the gear of the roller 51, and transmits only rotation in one direction of the pinion gear 54 to the roller 51. The cut piece discharging unit 50 converts the movement of the second portion 22 of the fiber holder 20 in the predetermined direction A into the movement of at least one of the rollers 51 and 52 in the direction intersecting the axial direction of the optical fiber 12. It is good to have a mechanism to do. For example, after the upper clamp members 14 and 15 clamp the optical fiber 12, the roller 52 moves by, for example, a mechanism similar to any of the mechanisms 30 </ b> A to 30 </ b> C described above, and sandwiches the optical fiber 12 with the roller 51. Good.

  The cut piece discharging unit 50 operates as follows. First, when the fiber holder 20 is inserted into the cutter body 13, as shown in FIG. 12, the pinion gear 54 is rotated by the movement of the second portion 22 (arrow A1 in the drawing) (arrow R1 in the drawing). . However, the roller 51 is idled by the action of the one-way clutch 55. When the second portion 22 further moves, the roller 52 moves and the optical fiber 12 is sandwiched between the rollers 51 and 52. In this state, when the second portion 22 further moves, the optical fiber 12 is cut.

  Thereafter, when the fiber holder 20 is taken out from the cutter main body 13, as shown in FIG. 13, the second portion 22 moves in the direction opposite to that during insertion (arrow A2 in the figure). At this time, the pinion gear 54 rotates (arrow R2 in the figure), and the rotation is transmitted to the roller 51 via the one-way clutch 55 (arrow R3 in the figure). By the rotation of the roller 51, the cut piece 12 a of the optical fiber 12 is separated from the optical fiber 12 and sent out to the outside of the cutter body 13. Since the optical fiber cutter 10A includes such a cut piece discharge portion 50, the cut piece 12a of the optical fiber 12 can be easily collected.

  The optical fiber cutter according to the present invention is not limited to the above-described embodiment, and various other modifications are possible. For example, the mechanism for moving the clamp member and the anvil interlocked with the attachment of the fiber holder is not limited to the interlock mechanism exemplified in the above embodiment, and various other mechanisms can be employed. In particular, such a mechanism can be suitably realized by various combinations of cams, walls, protrusions, etc. provided on the fiber holder and cam followers, links, elastic members, etc. provided on the cutter body. .

DESCRIPTION OF SYMBOLS 10A ... Optical fiber cutter, 12 ... Optical fiber, 13 ... Cutter main body, 14, 15 ... Upper clamp member, 16, 17 ... Lower clamp member, 18 ... Anvil, 19 ... Blade member, 20 ... Fiber holder, 21 ... 1st 22 ... second part, 23 ... elastic member, 30A-30C, 40A, 40B, 60A-60D ... mechanism, 31 ... link member, 32, 33 ... elastic member, 41 ... cam follower, 42 ... connecting member, DESCRIPTION OF SYMBOLS 43 ... Elastic member, 44 ... Link member, 45 ... Elastic member, 50 ... Cutting piece discharge part, 51, 52 ... Roller, 53 ... Rack gear, 54 ... Pinion gear, 55 ... One-way clutch, A ... Predetermined direction, F1 ... 1st Clamping position, F2 ... second clamping position, F3 ... pressing position, F4 ... scheduled cutting position.

Claims (9)

A fiber holder for holding an optical fiber to be cut;
A cutter body for mounting the fiber holder;
A clamp member provided in the cutter body so as to be movable in a direction intersecting with an axial direction of the optical fiber, and clamping the optical fiber at a first clamp position and a second clamp position of the optical fiber;
The cutter main body is provided so as to be movable in a direction crossing the axial direction of the optical fiber, and is pressed against a pressing position between the first clamp position and the second clamp position of the optical fiber, and the light. An anvil to bend the fiber,
A blade member that is provided on the cutter body and scratches a planned cutting position between the first clamp position and the second clamp position of the optical fiber;
In conjunction with the attachment of the fiber holder to the cutter body, the optical fiber is clamped by the clamp member, and an interlocking mechanism that automatically presses the anvil against the optical fiber is provided. , Fiber optic cutter.   The optical fiber cutter according to claim 1, wherein the fiber holder is attached to the cutter body in a state in which at least a part of the fiber holder is movable in a predetermined direction. A first portion for holding the optical fiber; and a first portion that is attached to the cutter main body so as to be movable in the predetermined direction and supports the first portion to be slidable in the predetermined direction. 2 parts,
3. The light according to claim 2, wherein when the fiber holder is attached to the cutter body, the cutter body locks the first part during the movement of the second part. 4. Fiber cutter.   The optical fiber cutter according to claim 2 or 3, wherein the predetermined direction is along an axial direction of the optical fiber.   The interlocking mechanism includes a mechanism for converting the movement of the at least part of the fiber holder in the predetermined direction into the movement of the clamp member in a direction intersecting the axial direction of the optical fiber. The optical fiber cutter as described in any one of 2-4.   The said interlocking mechanism includes a mechanism for converting the movement of the at least part of the fiber holder in the predetermined direction into the movement of the anvil in a direction intersecting the axial direction of the optical fiber. The optical fiber cutter as described in any one of -5. The blade member is provided movably in a direction intersecting the axial direction of the optical fiber in the cutter body;
The optical fiber cutter according to any one of claims 2 to 6, further comprising a mechanism for converting movement of the at least part of the fiber holder in the predetermined direction into movement of the blade member. Including a pair of rollers for sandwiching the cut piece of the optical fiber, further comprising a cut piece discharge portion for feeding the cut piece to the outside of the cutter body,
The optical fiber cutter according to any one of claims 2 to 7, further comprising a mechanism for converting movement of the at least part of the fiber holder in the predetermined direction into rotation of the roller. The cut piece discharge section has a mechanism for converting the movement of the at least part of the fiber holder in the predetermined direction into the movement of at least one of the pair of rollers in a direction intersecting the axial direction of the optical fiber. The optical fiber cutter according to claim 8.

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