JP4057553B2 - Optical fiber cutter - Google Patents

Description

  The present invention relates to an optical fiber cutter for optical communication, and more particularly to an optical fiber cutter capable of obtaining a highly accurate cleavage plane with a simple operation.

There are two types of optical fiber cutters: high performance type and simple type. The simple type is a structure in which an optical fiber is placed on a bending plate, its end is clamped to scratch the cutting position, and the optical fiber is bent along with the bending plate to cleave it. However, it is widely used because it is inexpensive.
In order to connect an optical fiber with a low connection loss, it is necessary to cut at a good cut end (cutting angle, cross-sectional roughness, etc.) of the optical fiber regardless of mechanical splices connected by fusion, connectors, or the like. Therefore, a high-performance type that can obtain a good cutting end regardless of the skill of the operator has been mainstream.

  With the spread of FTTH (Fiber To The Home) that lays optical fiber to customers, a simple type that can be handled by handy on utility poles and customers has appeared in the fusion machine, but the optical fiber cutter is fusion spliced. The required level of splice loss at the time of mechanical splicing is high, and high-performance types were mainly used. In recent years, the construction work for laying optical fibers has increased, and it has become necessary to obtain a good optical fiber cutting end even for simple optical fiber cutters, regardless of operator skill.

  Japanese Laid-Open Patent Publication No. 62-231203 discloses a conventional simple optical fiber cutter. FIG. 13 is a perspective view showing a conventional optical fiber cutter. Although not shown, the optical fiber core wire is disposed along the longitudinal direction of the optical fiber cutter. The conventional optical fiber cutter includes a clamp lever 114 that is pivotally supported by a bracket 112a of a support plate 112 and holds an optical fiber (not shown), a bite arm 146 that is pivotally supported by the bracket 112a and has a bite block 116 attached thereto, and the support plate 112. And a tensile bending stress applying means 120 attached to the. With this optical fiber cutter, the optical fiber core is cut as follows.

The optical fiber whose portion to be cut is exposed by peeling is engaged with the engaging groove 152 of the optical fiber receiving member 136, the clamp lever 114 is lifted against the spring 126, and the core wire is lifted by the rubber plate of the clamp lever 114. 124 and the rubber plate 122 of the support plate 112. Next, the bite arm 146 is pushed down against the spring 128 to press the bite (blade) in the bite block 116 onto the rubber layer 142 through the core wire. As a result, a notch is provided in the core wire, and then the fiber receiving member 136 together with the optical fiber is pivoted downward about the support shaft 132 against the spring 138. Accordingly, the core wire is bent with the roller 140 as a fulcrum, and a tensile stress is applied to cut the core wire.
In addition, Japanese Laid-Open Patent Publication No. 57-0455503, Japanese Utility Model Laid-Open Publication No. 63-135303, etc. disclose a simple optical fiber cutter.

JP 62-231203 A Japanese Patent Laid-Open No. 57-045503 Japanese Utility Model Publication No. 63-135303 Japanese Utility Model Publication No. 62-057203 Japanese Utility Model Publication No. 63-174303 JP 59-074508

  As described above, in the conventional optical fiber cutter, the optical fiber is clamped in the longitudinal direction of the cutter, and the blade in the cutting tool block 116 is moved by the play of the shaft 125 on which the tool arm 146 is pivotally supported. Since it moves in the longitudinal direction, when the optical fiber is scratched by the blade, the blade may move so as to slide in the longitudinal direction of the optical fiber, scratching the outer periphery of the optical fiber, or the scratching position is not fixed. For example, there is a problem that it is difficult to obtain a highly accurate cleavage plane. Furthermore, there is a problem that the fiber scraps that have been cut are scattered particularly when working at a customer.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an optical fiber cutter capable of solving the conventional problems and obtaining a highly accurate cleaved surface with a simple operation.

  The present inventor has intensively studied to solve the above-mentioned problems of the prior art. As a result, it was found that when the optical fiber was scratched in the direction perpendicular to the axis, it was possible to eliminate elements that moved the blade in the longitudinal direction due to play and deflection of the blade, and to obtain a good cutting angle. did. Furthermore, if the vertical position (that is, the height) between the damage position of the optical fiber and the central axis of the circular arc movement of the blade is different, the blade is moved in the longitudinal direction of the first member during the damage. Since the amount of movement increases, scratches having a desired depth can be added. Furthermore, since the optical fiber to be scratched is placed on a hard member, it is possible to prevent the fiber from being deformed (especially warping or escape), and to perform highly accurate scratching, and to cleave with high accuracy. It turns out that a surface is obtained.

The present invention was made based on the above findings, a first aspect of the optical fiber cutting device of the invention has been one end pivotally supported at a predetermined height A first member that includes a blade portion for scratching the optical fiber at the other end portion, and the blade portion performs an arc motion by rotating to damage the optical fiber;
It is formed integrally with a member that supports the first member, and the optical fiber is placed so as to be orthogonal to the longitudinal direction of the first member. At least a part of the member is provided with flexibility. An optical fiber mounting section;
A slide member that is slidable on the optical fiber mounting portion from the damaged position of the optical fiber in the axial direction of the optical fiber, and when the flexible member slides to the damaged position of the optical fiber, A slide member that includes a fixing portion that is fixed so as not to bend, and that opens the fixing portion so that the flexible member can be bent when the optical fiber slides in an axial direction from a scratch position of the optical fiber;
A hard member provided on the slide member and disposed at the damage position of the optical fiber when the slide member slides to the damage position of the optical fiber of the optical fiber mounting portion;
With
The first member is pivotally supported so that the shaft support position has a height different from the scratch position of the optical fiber, and the first member is moved in a state where the slide member is moved to the scratch position. By rotating, the blade is moved in an arc shape to damage the optical fiber, and after sliding the slide member in the axial direction, the flexible member is bent and the optical fiber is cut. This is an optical fiber cutter.

According to a second aspect of the optical fiber cutter of the present invention, there is provided an adjusting portion that adjusts the blade portion so that the blade portion moves in an arc and the force applied when the blade portion scratches the optical fiber becomes an appropriate amount. Is an optical fiber cutter.

According to a third aspect of the optical fiber cutter of the present invention, the optical fiber cutter includes a groove portion for attaching an optical fiber gripper for gripping the optical fiber in the optical fiber mounting portion .

According to a fourth aspect of the optical fiber cutter of the present invention, the optical fiber cutter includes an accommodating portion that accommodates one of the cut optical fibers connected to the optical fiber mounting portion. .

According to a fifth aspect of the optical fiber cutter of the present invention, the optical fiber cutter is characterized in that the housing portion is detachable from the optical fiber mounting portion .

A sixth aspect of the optical fiber cutter according to the present invention is an optical fiber cutter, wherein the optical fiber mounting portion includes a connecting portion that connects to the housing portion .

A seventh aspect of the optical fiber cutter according to the present invention is an optical fiber cutter, wherein the housing portion can be separated from the optical fiber mounting portion by sliding the connecting portion .

According to an eighth aspect of the optical fiber cutter of the present invention, the hard member is a member having a hardness of 3 or more .

According to a ninth aspect of the optical fiber cutter of the present invention, the hard member is made of metal .

According to a tenth aspect of the optical fiber cutter of the present invention, the optical fiber cutter includes at least one fiber pressing portion for fixing the optical fiber.

According to the optical fiber cutter of the present invention, the vertical position (that is, the height) between the damage position of the optical fiber and the center axis of the circular motion of the blade portion is different. Since the amount of movement of the blade portion in the longitudinal direction of the member 1 increases, scratches of a desired depth can be applied, and scratches are made in the direction perpendicular to the axis of the optical fiber, so that the shift of the scratch position is reduced. . Furthermore, since the optical fiber to be scratched is placed on a hard member, the fiber can be prevented from being deformed (warped, etc.) and can be scratched with extremely high accuracy, and a highly accurate cleavage surface can be obtained. It is done.

The optical fiber cutter of the present invention will be described in detail with reference to the drawings.
In the optical fiber cutter according to the present invention, one end is pivotally supported at a predetermined height so as to be rotatable, and the other end provided with a blade portion for scratching the optical fiber makes a circular motion. A member and a member that pivotally supports the first member, and the optical fiber is placed so as to be orthogonal to the longitudinal direction of the first member. At least a portion is flexible. and a fiber mounting section consisting of members, located in the shaft supporting position different height of the scratching position and the first member of the optical fiber, the optical fiber wherein the blade portion is moved in an arc The optical fiber cutting device is characterized in that the optical fiber is cut by bending the flexible member and bending the member.

FIG. 1 is a perspective view showing one embodiment of an optical fiber cutter according to the present invention. As shown in FIG. 1, the optical fiber cutter 1 is provided with a first member 2 pivotally supported on a bracket 3 by a pin 4 and a groove portion (not shown) that includes a flexible member and places an optical fiber. An optical fiber mounting portion 10, a fiber pressing portion 5 that holds the optical fiber, and a clamp lever 15 that is pivotally supported by the bracket 3 at the same position as the first member 2 and includes the fiber pressing portion 5 at the tip. Furthermore, you may provide the accommodating part which accommodates one of the cut | disconnected optical fibers.

Further, the slide member 8 may be disposed, and the hard member 9 may be provided on the upper portion of the slide member 8 . The hard member 9 slides in the longitudinal direction of the optical fiber as the slide member 8 slides. In addition, when the hard member 9 does not have the desired hardness, a hard material may be placed on the upper surface.

  The hard member 9 or the hard material may be anything as long as the hardness is 3 or more. For example, resin-based materials such as engineering plastics, composite materials such as FRP, ceramics and metals (iron (preferably at least the surface should be coated and rust-proofed), aluminum alloys (duralumin, etc.), iron-based alloys (Stainless steel, etc.)).

The slide member 8 is positioned so that the hard member 9 corresponds to the blade portion 24 provided at one end of the first member 2 when the optical fiber mounting portion 10 is in a substantially horizontal state. The exposed fiber 7 is peeled off and the exposed fiber 7 is disposed on the hard member 9 along the longitudinal direction of the optical fiber mounting portion 10, and the exposed fiber 7 is pressed by the fiber holding portion 5. By pushing down the clamp lever 15 against the spring, the fiber pressing portion 5 is lifted upward, and when the clamp lever is released, the fiber pressing portion 5 presses the fiber against the optical fiber mounting portion 10 . Thus the optical fibers 6 and 7 are disposed perpendicular to the longitudinal direction of the first member.

A blade portion 24 for scratching the optical fiber 7 is provided at the end portion of the first member 2 pivotally supported by the bracket 3. The blade portion 24 is damaged to the fiber 7 with a predetermined strength by a spring (not shown). The blade portion 24 includes a blade that scratches the optical fiber 7 in a substantially vertical direction. In this case, the cutting edge in the longitudinal direction of the first member 2 is positioned.

Located in the scratching position and height journalled position of the first member 2 is different in the optical fiber 7, the blade unit 24 is scratching the optical fiber 7 to move in an arc. Therefore, since the amount of movement of the blade in the longitudinal direction of the first member 2 increases during the scratching, it is possible to add a scratch having a desired depth.

After the optical fiber 7 is injured, when the slide member 8 is slid along the longitudinal direction of the optical fiber mounting portion 10 in the direction of the housing portion, the hard member 9 moves and the optical fiber mounting portion 10 is unfixed. The exposed optical fiber 6 is cut at the damaged portion, being curved as the optical fiber mounting portion 10 moves downward. One end of the cut fiber is accommodated in the accommodating portion.

FIG. 2 is a perspective view showing one embodiment of the optical fiber cutter according to the present invention. As shown in FIG. 2, the optical fiber cutter 1 includes a first member 2 and a flexible member 18 that are pivotally supported on the bracket 3 by pins 4, and the optical fiber gripper 11 is accommodated therein. An optical fiber mounting portion 10 provided with a groove portion 17, a fiber holding portion 5 for holding the optical fiber 7 , a clamp lever 15 that is pivotally supported by the bracket 3 at the same position as the first member 2 and includes the fiber holding portion 5 at the tip, A housing portion 16 for housing one of the cut optical fibers 7 is provided. In the optical fiber mounting portion 10 , an optical fiber gripper 11 that grips the optical fiber 6 is housed in a groove portion (not shown). The slide member 8 is disposed so as to sandwich the flexible member 18, and a hard member 9 is provided on the slide member 8 . The hard member 9 slides on the flexible member 18 as the slide member 8 slides.

When the slide member 8 is in a state where the optical fiber mounting portion 10 is fixed, the hard member 9 is positioned so as to correspond to the blade portion 24 provided at one end portion of the first member 2 . The optical fiber 6 gripped by the optical fiber gripper 11 is peeled off and the exposed fiber 7 is disposed on the hard member 9 and the flexible member 18 along the longitudinal direction of the optical fiber mounting portion 10, and the tip portion. Is located in the accommodating part 16 . The exposed fiber 7 is pressed by the fiber pressing portion 5 before the accommodating portion 16 . By pushing down the clamp lever 15 against the spring, the fiber pressing portion 5 is lifted upward. When the clamp lever 15 is released, the fiber pressing portion 5 presses the fiber onto the optical fiber mounting portion 10 . Thus the optical fibers 6 and 7 are disposed perpendicular to the longitudinal direction of the first member.

A blade portion 24 for scratching the optical fiber 7 is provided at the end portion of the first member 2 pivotally supported by the bracket 3. The blade portion 24 is damaged to the fiber with a predetermined strength by a spring (not shown). The blade portion 24 includes a blade that scratches the optical fiber 7 in a substantially vertical direction. In this case, the cutting edge in the longitudinal direction of the first member is located.

A connecting member is provided at one end of the optical fiber mounting part 10 , the connecting tip part 22 is inserted into the receiving part 23 of the receiving part 16 , and the receiving part 16 is attached to the optical fiber mounting part 10 . The accommodating portion 16 can be detached from the optical fiber mounting portion 10 .
Located in the scratching position and height journalled position of the first member 2 is different in the optical fiber 6, the blade unit 24 is scratching the optical fiber 7 to move in an arc. Therefore, since the amount of movement of the blade in the longitudinal direction of the first member 2 increases during the scratching, it is possible to add a scratch having a desired depth.

As will be described later, after the optical fiber 7 is damaged, when the slide member 8 is slid along the longitudinal direction of the optical fiber mounting portion 10 in the direction of the accommodating portion 16 , the hard member 9 moves and the optical fiber mounting portion 10 is moved. Is released, the flexible member 18 is bent as the optical fiber mounting portion 10 moves downward, and the exposed optical fiber 7 is cut at the damaged portion. One end of the cut optical fiber 7 is accommodated in the accommodating portion 16 .

  Moreover, the flexible member 18 and the optical fiber mounting part 10 are separate bodies, and may be joined mechanically with screws or the like or with an adhesive or the like. Alternatively, the flexible member 18 and the optical fiber mounting portion 10 may be the same member, and are formed by, for example, integral molding, cutting, or the like.

FIG. 3 is a diagram showing details of the optical fiber gripper 11 . FIG. 3A is a view showing a state where the lid portion 13 is released. FIG. 3B is a view showing a state in which the lid portion 13 is closed. As shown in FIGS. 3A and 3B, a fiber housing groove 14 for housing the coated optical fiber is provided in the central portion of the main body 12 along the longitudinal direction thereof. The lid 13 is closed in a state where the optical fiber is accommodated in the fiber accommodation groove 14 . For example, when a magnet member is provided on the back surface of the lid portion 13 and the surface of the main body 12 corresponding to each other, the fiber can be stably gripped. As shown in FIG. 2 , the optical fiber is accommodated in the groove portion 17 of the optical fiber mounting portion 10 in a state where the optical fiber is accommodated in the fiber accommodation groove 14 and the lid portion 13 is closed.

Moreover, the optical fiber holding tool 11 may be one that holds each optical fiber for single-core and multi-fiber. Alternatively, a single core and multiple cores may be held in common.

Furthermore, as Utsureru smoothly to fusing work, after the optical fiber holder 11 has been removed from the optical fiber mounting unit 10 to the optical fiber cutting V. optical fiber holder 11 to a predetermined position of the optical fiber fusion machine (not shown) It may be removable.

FIG. 4 is an exploded view of the optical fiber cutter according to one embodiment of the present invention. As shown in FIG. 4, in this aspect, the bracket 3 and the optical fiber mounting portion 10 are integrally formed. The optical fiber mounting portion 10 is provided with a groove portion 17 in which the optical fiber gripper 11 is accommodated. The optical fiber mounting portion 10 provided with the groove portion 17 includes a flexible member 18 extending in the longitudinal direction. The other end portion of the optical fiber mounting portion 10 includes a connecting portion 25 and a connecting tip portion 22 that are connected to the storage portion 16 . The slide member 8 provided with the fixing portion 30 is attached from the lower side and the hard member 9 is attached from the upper side so as to sandwich the flexible member 18 from above and below.

The leg portions on both sides of the hard member 9 are inserted into corresponding recesses formed in the slide member 8 respectively. A clamp lever 15 having a fiber pressing portion 5 at the tip and a spring in the vicinity of the other end is pivotally supported by the pin 4 in the hole 4 ′ of the bracket 3. Further, on the clamp lever 15, a blade portion 24 is provided at an end portion, and the other end portion of the first member 2 provided with a spring is similarly pivotally supported in the hole portion of the bracket 3. . As for the 1st member 2 , the blade part 24 provided in the front-end | tip part can carry out circular motion against a spring by setting an axis | shaft as a fulcrum. A housing portion 16 for housing the cut optical fiber is detachably attached to the connecting tip portion 22 .

FIG. 5 is an enlarged view for explaining the blade portion 24 in FIG. 4, and FIG. 5A is a view in which the blade and the first member 2 are directly fixed. In FIG. 5B, an adjusting portion (a spring in the figure) is provided between the blade and the first member 2 so that an appropriate amount of force is applied when the optical fiber 7 is damaged. In addition to a spring, an elastic body such as rubber, a gas pressure cylinder, or the like may be used.
Further, in the adjustment unit, the position of the spring can be changed, and the spring force can be adjusted and the spring and / or the blade can be replaced.
The blade may be harder than the optical fiber 7 , and may be metal, mineral (for example, sapphire, artificial stone, etc.), ceramic, or a blade with a surface treated (for example, diamond powder attached). is there.
Further, as shown in FIG. 5 (C), if the cutting edge has an arc shape, it can be damaged more smoothly, or can be smoothly moved between the optical fibers 7 even with respect to a multi-core (ribbon type). There are merits such as.

FIG. 6 is a perspective view illustrating a state in which the optical fiber mounting portion 10 is fixed in the optical fiber cutter according to the present invention. FIG. 8 is a side view illustrating a state where the optical fiber mounting portion 10 in the optical fiber cutter is fixed.
As shown in FIG. 6, the optical fiber gripping tool 11 is accommodated in the groove portion 17 of the optical fiber mounting portion 10, and the exposed optical fiber 7 is placed on the hard member 9 and the flexible member 18 on the optical fiber mounting portion 10. It is mounted along the longitudinal direction. The 1st member 2 is located in the state where the front-end | tip part was lifted upwards with the force of the spring. The blade portion 24 is positioned so as to be perpendicular to the exposed optical fiber 7 on which the blade tip is placed. The hard member 9 is positioned so as to correspond to the blade portion 24 of the first member 2. That is, the slide member 8 is positioned on the optical fiber gripper 11 side of the optical fiber mounting portion 10 . This state will be further described with reference to FIG. As shown in FIG. 8, the fixing portion 30 of the slide member 8 is positioned below the distal end portion of the optical fiber mounting portion 10 in which the optical fiber gripper 11 is accommodated, and supports and fixes the optical fiber mounting portion 10. is doing.

That is, by pressing one end of the optical fiber mounting portion 10 (the right side in the figure) downward in this state, the optical fiber mounting portion 10, because it is supported by the fixing unit 30 described above, it does not move downward. Thus, in a state where the optical fiber mounting portion 10 is fixed by the fixing portion 30 of the slide member 8, the blade portion 24 positioned at the distal end portion of the first member 2 performs an arc motion on the hard member 9 . The exposed optical fiber 7 placed is injured with a required strength. Since the blade portion 24 is wound while performing an arc motion while being placed on the hard member 9, an element that moves when the blade comes into contact with the fiber and moves in the longitudinal direction of the fiber by bending is eliminated, The distribution of the cutting angle can be reduced. The coated optical fiber 7 is fixed on one side by an optical fiber gripper 11 and the other exposed side is fixed by being pressed by a fiber pressing part 5 .

FIG. 7 is a perspective view for explaining a state in which the optical fiber mounting portion 10 in the optical fiber cutter according to the present invention is released from fixing and the flexible member 18 is bent. FIG. 9 is a side view illustrating a state in which the fixing of the optical fiber mounting portion 10 in the optical fiber cutter is released.

As shown in FIG. 9, when the slide member 8 moves to the housing portion 16 side, the fixing portion 30 of the slide member 8 moves away from the lower side of the distal end portion of the optical fiber mounting portion 10 in which the optical fiber gripper 11 is housed. The lower side of the optical fiber mounting part 10 is opened. That is, pressing downward as shown one end of an optical fiber mounting portion 10 (right side of drawing) by the arrow in this state, since the lower portion of the optical fiber mounting portion 10 is released, the direction indicated by the arrow Easy to move to. When the damage to the exposed optical fiber 6 is completed, the first member 2 moves upward by the force of the spring.

As shown in FIG. 7, when the slide member 8 is moved to the accommodating unit 16 side, the fixed part of the slide member 8 as described above is released from the lower side of the optical fiber mounting portion 10, the optical fiber holder 11 is When the stored optical fiber mounting portion 10 is pushed downward, the flexible member 18 is bent. Bending stress is applied to the fiber exposed by this bending, and the optical fiber 6 is cut.
As described above, according to the optical fiber cutter of the present invention, the vertical position (that is, the height) between the scratch position of the optical fiber 7 and the central axis of the arc motion of the blade is different. Since the amount of movement of the blade in the longitudinal direction of the first member 2 increases at the time of scratching, it is possible to apply a scratch of a desired depth, and the scratch is performed in the direction perpendicular to the axis of the optical fiber 7 , so that the cutting angle The distribution of becomes smaller. Further, since the optical fiber 7 to be scratched is placed on the hard member 9 , it is possible to prevent the deformation (warp or the like) of the fiber and to perform extremely high-accuracy scratching, and to cleave the surface with high accuracy. Is obtained.

FIG. 10 is a perspective view showing another embodiment of the optical fiber cutter according to the present invention.
As shown in FIG. 10, the optical fiber cutter includes a first member 2 pivotally supported on the bracket 3 by a pin 4, an optical fiber mounting portion 26 having a push button type push pillow 28, an optical fiber 7 , a fiber holding part 16 for holding one of the cut optical fiber 7 and a clamp lever 15 which is pivotally supported by the bracket 3 at the same position as the first member 2 and is provided with the fiber holding part 5 at the tip. It has. In the optical fiber mounting portion 26, an optical fiber gripper 11 for gripping the optical fiber 6 is accommodated in a groove portion (not shown). The upper surface portion of the push pillow is provided with a concave portion orthogonal to the optical fiber 7 exposed in the concave portion orthogonal to the concave portion corresponding to the blade portion 24. By providing this recess, it is possible to further reduce the deviation between the fiber and the blade.
Note that the above-described recess may be omitted.

In the optical fiber cutting device of this aspect, the optical fiber mounting portion moves downward and does not bend in the flexible member 18 as in the aspect described with reference to FIGS. That is, the optical fiber mounting portion is not provided with a flexible member, and is not provided with a slide member.

In the optical fiber cutter of this aspect, the fiber 7 exposed by peeling off the coating of the optical fiber 6 gripped by the optical fiber gripper 11 is placed in the depression of the push pillow along the longitudinal direction of the optical fiber mounting portion 10. Placed. The exposed optical fiber 7 is pressed from both sides by the fiber pressing portion 5 in this state. When the upper end portion of the push pillow is formed of the hard member 9 , the optical fiber 7 to be damaged is placed on the hard member 9 , so that deformation (warp or the like) of the fiber can be prevented.

By pushing down the clamp lever 15 against the spring, the fiber pressing portion 5 is lifted upward. When the clamp lever 15 is released, the fiber pressing portion 5 presses the fiber onto the optical fiber mounting portion 10 . Thus the optical fibers 6 and 7 are disposed perpendicular to the longitudinal direction of the first member.

A blade portion 24 for scratching the optical fiber 7 is provided at the end portion of the first member 2 pivotally supported by the bracket 3. The blade portion 24 is damaged to the fiber with a predetermined strength by a spring (not shown). The blade portion 24 includes a blade that scratches the optical fiber 7 in a substantially vertical direction. In this case, the cutting edge in the longitudinal direction of the first member 2 is positioned.
A connecting member is provided at one end of the optical fiber mounting part 10 , the connecting tip part 22 is inserted into the receiving part 23 of the receiving part 16 , and the receiving part 16 is attached to the optical fiber mounting part 10 . The accommodating portion 16 can be detached from the optical fiber mounting portion 10 .

When the exposed optical fiber 7 is scratched by the blade and then the push button of the push button type push pillow is pressed, bending stress is applied to the damaged optical fiber 7 and the optical fiber 7 is cut.

FIG. 11 is a diagram for explaining the push button type push pillow 28 . As shown in FIG. 11, the upper end portion of the push pillow 28 is provided with recesses that are orthogonal to each other. The exposed optical fiber is placed in one of the concave portions, and the optical fiber is scratched and moved while the blade draws an arc in the other concave portion. The size of h is set so that the push pillow 28 is positioned at a desired height of the optical fiber mounting portion 10 , and the spring force is set so as to apply a desired bending stress to the optical fiber.
In addition, in the aspect mentioned above, although the fiber pressing part is provided in one side, you may provide in both or may provide so that it may fix in two or more places. In addition, it is desirable to attach an elastic body to at least a predetermined portion of the fiber pressing portion that holds the side of the optical fiber to be fused so as not to damage the optical fiber as much as possible.
Moreover, the aspect which does not have an accommodating part may be sufficient.

FIG. 12 is a diagram illustrating a method of bending at a bent portion. As shown in FIG. 12, the connecting portion 25 connected to the storage portion 16 and the optical fiber mounting portion 10 are connected by a bent portion 33. As shown in FIG. 12A, an optical fiber is placed, the optical fiber is fixed by the fiber pressing portion 5 by operating the clamp lever 15, and when the first member 2 is operated, the blade is added to the optical fiber 6 while drawing an arc. Wound and move. Thereafter, as shown in FIG. 12 (B), when the slide member 8 is moved to the storage portion 16 side and the optical fiber mounting portion 10 is moved downward (bent), a desired bending stress is applied to the optical fiber, and the optical fiber is damaged. The optical fiber is cut starting from the position.
Further, in addition to the above-described aspect, when the optical fiber mounting portion 10 is bent, the push pillow protrudes from the side opposite to the scratched side of the optical fiber so as to cut it by applying a desired bending stress to the optical fiber. It may be.
In addition, in the aspect mentioned above, although the fiber pressing part 5 is provided in one side, you may provide in both sides.
Moreover, the aspect which does not have an accommodating part may be sufficient.

  According to the present invention, it is possible to provide an optical fiber cutter capable of obtaining a highly accurate cleaved surface with a simple operation, and is highly industrially useful.

FIG. 1 is a perspective view showing one embodiment of an optical fiber cutter according to the present invention. FIG. 2 is a perspective view showing another embodiment of the optical fiber cutter according to the present invention. FIG. 3 is a diagram showing details of the optical fiber gripper. FIG. 4 is an exploded view of the optical fiber cutter according to one embodiment of the present invention. FIG. 5 is an enlarged view for explaining the blade portion in FIG. FIG. 6 is a perspective view for explaining a state in which the optical fiber mounting portion is fixed in the optical fiber cutter according to the present invention. FIG. 7 is a perspective view for explaining a state in which the optical fiber mounting portion in the optical fiber cutter of the present invention is released from fixing and the flexible member is bent. FIG. 8 is a side view illustrating a state where the optical fiber mounting portion in the optical fiber cutter is fixed. FIG. 9 is a side view illustrating a state where the fixing of the optical fiber mounting portion in the optical fiber cutter is released. FIG. 10 is a perspective view showing another embodiment of the optical fiber cutter according to the present invention. FIG. 11 is a diagram illustrating a push button type push pillow. FIG. 12 is a perspective view showing another embodiment of the optical fiber cutter according to the present invention. FIG. 13 is a perspective view showing a conventional optical fiber cutter.

Explanation of symbols

1. 1. Optical fiber cutter First member Bracket 4. Pin 5. Fiber holding part 6. Optical fiber Exposed fiber 8. 8. Slide member Hard member 10. 10. Optical fiber mounting part Optical fiber gripper 12. Main body 13. Lid 14. Fiber receiving groove 15. Clamp lever 16. Container 18. Flexible member 22. Connecting tip 23. Reception part 24. Blade part 25. Connecting part 26. Optical fiber mounting part 27. Push button 28. Push pillow 30. Fixed part 31, 32. Concave part 33. Bent part

Claims (10)

One end is pivotally supported at a predetermined height , and the other end is provided with a blade for scratching the optical fiber. A first member for scratching the optical fiber;
It is formed integrally with a member that supports the first member, and the optical fiber is placed so as to be orthogonal to the longitudinal direction of the first member. At least a part of the member is provided with flexibility. An optical fiber mounting section;
A slide member that is slidable on the optical fiber mounting portion from the damaged position of the optical fiber in the axial direction of the optical fiber, and when the flexible member slides to the damaged position of the optical fiber, A slide member that includes a fixing portion that is fixed so as not to bend, and that opens the fixing portion so that the flexible member can be bent when the optical fiber slides in an axial direction from a scratch position of the optical fiber;
A hard member provided on the slide member and disposed at the damage position of the optical fiber when the slide member slides to the damage position of the optical fiber of the optical fiber mounting portion;
With
The first member is pivotally supported so that the shaft support position has a height different from the scratch position of the optical fiber, and the first member is moved in a state where the slide member is moved to the scratch position. By rotating, the blade is moved in an arc shape to damage the optical fiber, and after sliding the slide member in the axial direction, the flexible member is bent and the optical fiber is cut. An optical fiber cutter characterized by that. 2. The optical fiber cutter according to claim 1, further comprising an adjustment unit that adjusts the blade to move in a circular arc so that an appropriate amount of force is applied when the blade hits the optical fiber. 3. . The optical fiber cutting device according to claim 1, wherein the optical fiber mounting portion includes a groove portion for attaching an optical fiber gripper for gripping an optical fiber. The optical fiber cutter according to claim 3, further comprising an accommodating portion that accommodates one of the cut optical fibers connected to the optical fiber mounting portion. The optical fiber cutter according to claim 4, wherein the housing portion is detachable from the optical fiber mounting portion. The optical fiber cutting device according to claim 5, wherein the optical fiber mounting portion includes a connecting portion that connects to the housing portion. The optical fiber cutter according to claim 6, wherein the housing portion can be separated from the optical fiber mounting portion by sliding the connecting portion. The optical fiber cutter according to claim 1, wherein the hard member is a member having a hardness of 3 or more. The optical fiber cutter according to claim 1, wherein the hard member is made of metal.   The optical fiber cutter according to any one of claims 1 to 9, further comprising at least one fiber pressing portion for fixing the optical fiber.

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