JP4999045B2 - Optical fiber stripping part and optical fiber stripping method - Google Patents

Description

  The present invention relates to an optical fiber stripping part and an optical fiber stripping method, and in particular, an optical fiber stripping method in which an optical fiber can be cut by a simple operation to obtain a cleavage plane, and the coating of the optical fiber can be removed. The present invention relates to a component and an optical fiber peeling method.

There are two types of optical fiber cutters: high performance type and simple type. The simple type has a structure in which an optical fiber is placed on a bending plate, the end is clamped to scratch the cutting position, and the optical fiber is bent along with the bending plate to cleave the operator. 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), which lays optical fiber to each customer, a simple type that can be handy on the utility pole or on the customer has appeared in the fusion machine, but the optical fiber cutter is fused. The required level of connection loss at the time of connection and mechanical splicing has increased, and high-performance types were mainly used. The high-performance type can obtain a good cut end portion of the optical fiber regardless of the skill of the operator, and is disclosed in, for example, Japanese Patent Application Laid-Open No. 1-112206 or Japanese Patent Application Laid-Open No. 1-126601.

  In recent years, optical fiber laying work for each consumer has been increasing, and a large number of optical fiber cutters are required for many laying work locations. However, since the high-performance type is very expensive, if a large number of high-performance type optical fiber cutters are arranged at each laying site, the cost becomes very large. Therefore, it has been demanded that a good optical fiber cutting end can be obtained regardless of the skill of the operator even with a simple optical fiber cutter that is less expensive than the high-performance type.

  For example, in providing a connection portion such as an optical connector at the end of an optical fiber housed in a closure disposed in the vicinity of a utility pole, when cutting an optical fiber, a conventional tool provided with a metal blade ( Cutter) was used.

  This tool first scratches an optical fiber in a direction perpendicular to the longitudinal axis of the optical fiber, and then cleaves and cuts the optical fiber. I couldn't cut it.

  Japanese Laid-Open Patent Publication No. 62-231203 discloses a conventional simple optical fiber cutter. FIG. 9 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.
JP 62-231203 A Japanese Patent Laid-Open No. 1-112206 JP-A-1-126601

  As described above, the construction of 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. It was. Along with this, in the conventional simple type optical fiber cutting device, a metal blade and a diamond blade for scratching the optical fiber were attached. However, when these metal blades are used, the optical fiber is excessively scratched. In addition, there is a problem that it is not suitable for use or that it is difficult to work at the time of operation in the dark.

  In addition, the optical fiber coating cannot be easily removed simultaneously with the cutting of the optical fiber.

  Accordingly, an object of the present invention is to provide an optical fiber that can be stably operated, can obtain a good cut end of an optical fiber regardless of operator's skill, and can remove the coating of the optical fiber. An object of the present invention is to provide a peeling component and an optical fiber peeling method.

  The present inventor has intensively studied to solve the above-mentioned problems of the prior art. As a result, when a blade made of synthetic resin is used instead of a metal or diamond blade, when the blade is pressed against the optical fiber, the blade itself is deformed, and a predetermined scratch is formed on the cladding surface portion of the optical fiber. If this optical fiber is bent to the side opposite to the scratch, the cut surface is in good condition and can be connected with a predetermined connection loss when connecting. Therefore, it depends on the skill of the operator. It was found that the optical fiber can be cut easily and stably.

  Furthermore, two coating removal blades corresponding to sandwich the coated optical fiber apart from the optical fiber cutting blade are similarly formed of a resin material, and the coating removal blade is arranged at a predetermined interval from the optical fiber cutting blade. In conjunction with the operation of the optical fiber cutting blade described above, a portion of the coating of the coated optical fiber is cut by the coating removal blade, and if the damaged portion is bent to the side opposite to the scratch, the optical fiber is cut. And the coating was found to be removed.

The present invention has been made on the basis of the above research results. The first aspect of the optical fiber peel-off component according to the present invention includes a groove that can accommodate a coated optical fiber extending in the longitudinal direction, and an inner portion of the groove. An optical fiber cutting blade provided integrally with the optical fiber, a coating removal blade integrally provided in the groove with a distance from the optical fiber cutting blade, and a resin material provided with a refracting portion in the middle A first member comprising:
Corresponding to the groove portion corresponding to the groove portion of the first member, which is disposed facing the first member and can accommodate the coated fiber, and the coating removing blade of the first member integrally provided in the groove portion And a second member made of a resin material provided with a refracting portion corresponding to the refracting portion of the first member at an intermediate portion.

According to a second aspect of the optical fiber stripped component of the present invention, each of the refraction portions of the intermediate portion is formed of a connection portion having a small thickness, and the connection portion causes one member of the first member and the other member The member and the one member of the second member and the other member are connected to each other, and the optical fiber peeled component is provided.
According to a third aspect of the optical fiber stripped component of the present invention, the connecting portion of the second member has one member of the second member and the other member as side walls, and the small thickness portion is a bottom portion. The end surface of one member of the second member is widened so that the distance between the one member of the second member and the other member of the second member increases from the portion where the thickness is small. The optical fiber peeling component according to claim 2, further comprising a tapered portion.

According to a fourth aspect of the optical fiber peeled component of the present invention, the optical fiber peeled component has a thickness of the connecting portion in the range of 0.4 to 2.0 mm.

According to a fifth aspect of the optical fiber peel-away component of the present invention, when the first member and the second member are arranged to face each other, the optical fiber in each one member of the first member and the second member An optical fiber peeling component comprising a predetermined space between a cutting blade and the coating removing blade.

According to a sixth aspect of the optical fiber stripping part of the present invention, when the opposing surfaces of the first member and the second member face each other, the optical fiber cutting blade deforms itself. Until the optical fiber accommodated in the groove is pressed to damage the optical fiber, and the distance between the coating removal blades of the first member and the second member is the coated optical fiber. This is an optical fiber peeled part characterized by substantially matching the diameter of the optical fiber core wire.

According to a seventh aspect of the optical fiber peel-off part of the present invention, the resin material is made of an epoxy-based or PPS (polyphenylene sulfide) -based synthetic resin and contains 60% or more of a glass filler. It is an optical fiber stripped part.

According to an eighth aspect of the optical fiber peel-off component of the present invention, the groove portions each have a flat bottom surface and both side surfaces inclined from the bottom surface, and the optical fiber cutting blade is located in the groove portion. The optical fiber peeled part is characterized in that the top part of the blade is formed substantially coincident with the surface of the first member.

According to a ninth aspect of the optical fiber peel-off component of the present invention, each of the groove portions includes a flat bottom surface and both side surfaces inclined from the bottom surface, and the optical fiber cutting blade is located in the groove portion. The optical fiber peeled part is characterized in that the top of the blade is formed to protrude into the groove of the second member.

According to a tenth aspect of the optical fiber peeled component of the present invention, the optical fiber peeled component is characterized in that the distance between the coating removal blades is in a range of 0.128 to 0.140 mm.

An eleventh aspect of the optical fiber peeling component according to the present invention is an optical fiber peeling component in which the angles of the tips of the optical fiber cutting blade and the coating removal blade are within a range of 10 to 45 degrees.

  According to a twelfth aspect of the optical fiber peeling part of the present invention, the optical fiber cutting blade and / or the coating removal blade is not provided in the groove portion of each of the first member and the second member. An optical fiber peeling component comprising a protrusion for holding a coated optical fiber at at least one corresponding portion.

  A thirteenth aspect of the optical fiber peeled component according to the present invention is an optical fiber peeled component characterized in that the height of the protrusion is in the range of 0.01 to 0.05 mm.

The fourteenth aspect of the optical fiber peeled component according to the present invention is characterized in that a stage is provided at a portion facing the optical fiber cutting blade in the groove portion of the second member. 14. An optical fiber peeled part according to any one of items 1 to 13.

The first aspect of the optical fiber stripping method of the present invention includes a groove portion that can receive a coated optical fiber, an optical fiber cutting blade and a coating removal blade that are integrally formed in the groove portion, and a refractive portion that is refracted at an intermediate portion. A first member made of a resin material provided with a portion, a groove portion capable of accommodating a coated fiber and corresponding to the groove portion of the first member, and a coating removal blade for the first member integrally provided in the groove portion And a coating removing blade corresponding to the second member made of a resin material provided with a refractive part corresponding to the refractive part of the first member in the intermediate part,
A coated optical fiber is accommodated in the groove,
In the central portion, the lower member and the upper member are pressed with a predetermined force, the optical fiber cutting blade is pressed against the optical fiber until the blade itself is deformed, and the optical fiber is damaged.
In the refracting portion, a tension is applied to the portion of the optical fiber that is scratched by the optical fiber cutting blade, and the optical fiber is cut by bending to the side opposite to the scratch, and at the same time, the optical fiber is cut by the coating removal blade. This is an optical fiber peeling method for removing the coating.

  When the optical fiber is cut using the optical fiber peeled component of the present invention, an optical connector is assembled, and a refractive index matching agent is applied and connected to the connection end face, so that a connection loss of 1.0 dB or less can be realized. did it. Moreover, the coating of the coated optical fiber could be removed over a predetermined length.

  The optical fiber peeling component and the optical fiber peeling method of the present invention will be described with reference to the drawings.

  One aspect of the optical fiber peel-off component of the present invention includes a groove portion that can accommodate a coated optical fiber extending in the longitudinal direction, an optical fiber cutting blade made of a resin material integrally provided in the groove portion, and the An optical fiber cutting blade and a coating removing blade made of a resin material integrally provided in the groove with a distance from the optical fiber cutting blade, and a lower member made of a resin material provided with a refracting portion in the center, A groove portion that is disposed to face the lower member and can accommodate the coated fiber and corresponds to the groove portion of the lower member; and a sheath removal blade corresponding to the sheath removal blade of the lower member provided integrally in the groove portion; An optical fiber peeled component comprising an upper member made of a resin material provided with a refracting portion corresponding to the refracting portion of the lower member at a central portion. The respective blades formed on the upper and lower members can be integrally formed when the upper and lower members are molded with a resin material.

  FIG. 1 is a perspective view showing an optical fiber peeling component according to the present invention. FIG. 2 is an exploded view of the first member (ie, the lower member) and the second member (ie, the upper member) shown in FIG. FIG. 2A is a perspective view showing the lower member. FIG. 2B is a perspective view showing the upper member. FIG.2 (c) is the elements on larger scale of the edge part of Fig.2 (a).

  As shown in FIG. 1, an optical fiber peeling component 1 of the present invention includes a lower member 2 made of a resin material and an upper member 3 made of a resin material. The lower member 2 includes one member (that is, a lower left member) 2a and the other member (that is, a lower right member) 2b, and the upper member 3 includes one member (that is, an upper left member) 3a and the other member ( Upper right member 3b. The upper member and the lower member are respectively provided with a groove portion 4 for housing the optical fiber on the opposing surface, and optical fiber insertion portions 4-1a, 4 formed in a shape in which a substantially conical shape is halved at the end portion of the groove portion 4. -2a.

  As shown in an enlarged view in FIG. 2 (c), this optical fiber insertion portion 4a is provided at the ends of a lower right member and an upper right member, which will be described later, and has a substantially conical shape when the respective members are arranged to face each other. It is formed. Further, a refracting portion 5 having a tapered portion is provided at the central portion of the upper member. As will be described later with reference to FIG. 6, the tapered portion facilitates the bending operation of the left side member.

  As shown in FIG. 2A, a groove portion 4-1 is formed in the upper surface central portion of the lower member so as to accommodate the coated optical fiber along the longitudinal direction. An optical fiber cutting blade made of a resin material that scratches the cladding surface of the optical fiber (not shown) and a coating removal blade that removes the coating of the coated optical fiber are integrally formed in the groove portion at the center of the lower member. Yes. As shown in FIG. 2B, the upper member formed of a resin material includes a refracting portion having a tapered portion on the surface portion of the central portion. A groove portion 4-2 corresponding to the groove portion shown in FIG. 2A is formed on the surface facing the lower member of the upper member. In the groove portion of the upper member, a coating removal blade made of a resin material that removes the coating of a coated optical fiber (not shown) is integrally formed.

  In both the optical fiber cutting blade and the coating removal blade, the blade of the resin material hits at right angles to the axial direction of the coated optical fiber 4. In addition, protrusions 3c are provided at both ends of the upper member 3, and engaging pillars 2c that engage with the protrusions of the upper member 3 protrude from the four corners of the surface facing the upper member 3 of the lower member 2. Is provided. When the upper member 3 and the lower member 2 are arranged to face each other with the protrusions engaged between the respective engagement columns, the upper member 3 and the lower member 2 are relatively within the height of the engagement column. You can move freely as you approach or leave.

  The lower member, the upper member, the optical fiber cutting blade and the coating removal blade are all made of a resin material, and the resin material forming them is made of an epoxy-based or PPS (polyphenylene sulfide) -based synthetic resin. For example, a widely used synthetic resin for ferrules can be used. Moreover, what mixed the glass filler in the said synthetic resin can also be used. In this case, when the optical fiber cutting blade is pressed and deformed against the optical fiber (the optical fiber without the coating), the glass filler contained in the resin is pressed against the clad surface of the optical fiber, and a predetermined amount is applied to the clad surface portion. Can scratch. If 60% or more of the glass filer is included, the cladding surface of the optical fiber can always be scratched well, the cut surface of the optical fiber is in good condition, and the optical fiber is connected with further reduced connection loss. Can do.

  FIG. 3 is a schematic cross-sectional view for explaining an optical fiber peeling component according to the present invention. FIG. 4 is a cross-sectional view illustrating the relationship between the groove formed in the lower member and the upper member, the optical fiber cutting blade, and the coating removal blade.

  As shown in FIG. 3, the refracting portion at the center of the lower member and the upper member is composed of a connecting portion 7 having a small thickness, and the connecting portion 7 causes the lower left member 2a and the lower right member 2b, and the upper left member 3a and The upper right members 3b are connected to each other. Furthermore, a space 8 is formed in the lower left member 2a and the upper left member 3a with an optical fiber interposed therebetween. The space is generally formed between the optical fiber cutting blade and the coating removal blade.

  FIG. 5 is an enlarged view of a portion A indicated by a dotted circle in FIG. The optical fiber cutting blade and the coating removal blade will be described in detail with reference to FIG. As shown in FIG. 5, the lower left member 2a is provided with an optical fiber cutting blade 9 and a coating removing blade 10-1. The upper left member 3a is provided with a coating removal blade 10-2 at a position corresponding to the coating removal blade 10-1. In other words, the optical fiber cutting blade 9 is provided only on the lower left member, and is formed so as to protrude to a deeper position with respect to the center of the optical fiber than the coating removal blade.

  On the other hand, the coating removing blade is provided so as to sandwich the coated optical fiber at a position corresponding to each of the lower left member and the upper left member. As described above, the space 8 is formed in the lower left member and the upper left member between the optical fiber cutting blade and the coating removal blade. The space part is scratched on the clad surface of the optical fiber with an optical fiber cutting blade, cut into the coating of the coated optical fiber with a coating removal blade, and then the bending position of the optical fiber is shifted so that the optical fiber is a left member and a right member. It has a function to prevent breakage at the joint.

  The distance b between the upper and lower sheath removal blades is in the range of 0.128 mm to 0.140 mm when the opposing surfaces of the upper member 3 and the lower member 2 are brought into contact with each other. If the distance b is less than 0.128 mm, the optical fiber cladding may be damaged. If the distance b exceeds 0.140 mm, the coating may not be removed. The thickness a of the connecting portion is in the range of 0.4 mm to 2.0 mm. If the thickness “a” of the connecting portion is less than 0.4 mm, the connecting portion may be broken during the operation at an unintended stage. If the thickness a of the connecting part exceeds 2.0 mm, it is difficult to break and the operation may be difficult.

  As shown in FIG. 4, the groove part 4-1 formed in the lower member and the groove part 4-2 formed in the upper member are arranged to face each other. In the groove part 4-1, the coating removal blade 10-1 and the optical fiber cutting blade 9 are integrally formed with the lower member. Furthermore, a coating removal blade 10-2 is formed integrally with the upper member in the groove 4-2. When pressed against the coated optical fiber, the optical fiber cutting blade 9 breaks through the coating, and the resin material is softer than an optical fiber made of, for example, quartz glass. 6 pressed against the cladding surface. When the blade 9 is pressed, the clad surface portion of the optical fiber is damaged. In this way, the blade of the resin material can be scratched to the cladding surface portion of the optical fiber without being pulled, pushed in the horizontal direction, or rotated only by being pressed against the optical fiber.

  The coating removal blade 10 is also formed of a resin material. However, since the coating is softer than an optical fiber made of, for example, quartz glass, the coating of the optical fiber without pressing the blade 10 does not damage the cladding of the optical fiber. Then cut into the coating.

  In each of the optical fiber cutting blade 9 and the coating removal blade 10, the angle α of the tip of the blade is in the range of 10 to 45 degrees. When the angle α of the tip of the blade is less than 10 degrees, it is difficult to ensure the strength required for an optical fiber cutting blade, and the blade is easily broken and difficult to mold. If the angle α of the blade tip exceeds 45 degrees, even if the blade is pressed against the optical fiber cladding surface, the optical fiber cladding cannot be scratched and the optical fiber cannot be cut. In addition, the cut into the coating is insufficient. In addition, the optical fiber 6 is bent and cleaved toward the side opposite to the damaged part, and the coating is removed.

  In one aspect of the optical fiber stripped part of the present invention, at least one corresponding one in the groove of each part of the first member and the second member not provided with the optical fiber cutting blade and / or the coating removal blade. The part is provided with a protrusion for holding the coated optical fiber.

  FIG. 6 is a cross-sectional view illustrating the protrusion formed in the groove. FIG. 6A is a cross-sectional view showing a state in which the first member and the second member are arranged to face each other without accommodating the coated optical fiber. FIG. 6B is a cross-sectional view showing a state in which the coated optical fiber is accommodated and the first member and the second member are arranged to face each other. As shown in FIG. 6 (a), the first member 2 and the protrusions 11-1, 11 having a substantially domed tip rounded at the corresponding portion in the groove 4 of the second member 3 are arranged. -2 is provided. As shown in FIG. 6B, the protrusions 11-1 and 11-2 press a part of the outer peripheral surface of the coated optical fiber accommodated in the groove to hold the coated optical fiber and fix it in place. To do. At least one pair of protrusions are integrally formed in the groove portions of the first member and the second member. Therefore, a plurality of pairs may be formed at a predetermined interval.

The positions of the protrusions are preferably corresponding positions in the groove portions of the first member and the second member. By providing the protrusions in this way, the coated optical fiber can be held more securely in the groove portion in the member where the optical fiber cutting blade and the coating removal blade do not exist, so that the optical fiber is cut and the coating is removed. At this time, the optical fiber can be easily peeled off without causing a shift in the position of the coated optical fiber in the groove.
The height of the protrusion is in the range of 0.01 to 0.05 mm from the bottom of the groove. If the height of the protrusion is less than 0.01 mm, more reliable holding of the coated optical fiber in the groove is insufficient, and an effect cannot be expected. On the other hand, if the height of the protrusion exceeds 0.05 mm, the opposed surfaces of the first member and the second member are difficult to contact, so that the coated optical fiber becomes unstable in the groove, and the coated optical fiber is held. Is insufficient.

In one aspect of the optical fiber stripped component of the present invention, each of the grooves has a flat bottom surface and both side surfaces inclined from the bottom surface, and the optical fiber cutting blade is located in the groove portion, and the top of the blade Is formed protruding in the groove of the second member.
FIG. 7A is a diagram for explaining a state in which the flange portion of the optical fiber cutting blade protrudes into the groove portion of the second member. As shown to Fig.7 (a), the front part of the optical fiber cutting blade 9 integrally formed in the groove part 4-1 of the 1st member 2 is from the surface (it shows with a dotted line in the figure) of the 1st member. Also protrudes upward and is located in the groove of the second member. By projecting the optical fiber cutting blade into the groove of the second member in this way, the cutting blade is reliably pressed by the optical fiber, and the cutting becomes easier and more reliable.

  In one aspect of the optical fiber peeling component of the present invention, a stage is provided at a portion facing the optical fiber cutting blade in the groove portion of the second member. FIG. 7B is a view for explaining a stage provided at a portion in the groove facing the optical fiber cutting blade. In the above-described embodiment, the distance between the top portion of the blade and the optical fiber is shortened by projecting the ridge portion of the optical fiber cutting blade into the facing groove, and the optical fiber cutting blade is securely attached to the optical fiber. I was able to be pressed against. In this aspect, a stage is provided in the groove of the second member to relatively shorten the distance between the top of the blade and the optical fiber so that the optical fiber cutting blade is reliably pressed against the optical fiber. ing. As shown in FIG. 7B, the light in the groove part 4-2 of the second member 3 disposed opposite to the first member 2 in which the optical fiber cutting blade 9 is integrally formed in the groove part 4-1. A stage 12 is provided at a site corresponding to the fiber cutting blade 9. In this case, the top portion of the optical fiber cutting blade 9 is formed substantially coincident with the surface of the first member 2. The stage 12 may be formed integrally with the second member 3 by a rectangular member having a flat surface. The surface of the stage 12 may be a concave shape corresponding to the outer periphery of the coated optical fiber. By providing the stage in this way, the distance between the top of the blade and the optical fiber is relatively shortened, and the optical fiber cutting blade is reliably pressed by the optical fiber.

  Next, an optical fiber peeling method will be described.

  The optical fiber peeling method according to the present invention includes the following steps.

That is, a lower member made of a resin material provided with a groove portion that can receive a coated optical fiber, an optical fiber cutting blade and a coating removal blade made of a resin material integrally formed in the groove portion, and a refractive portion at the center portion A groove portion that can accommodate the coated fiber and corresponds to the groove portion of the lower member, a coating removal blade that corresponds to the coating removal blade of the lower member that is integrally provided in the groove portion, and An upper member made of a resin material provided with a refracting part and a corresponding refracting part is arranged oppositely,
The coated optical fiber is accommodated in the groove,
At the center, the lower member and the upper member are pressed with a predetermined force, the optical fiber cutting blade is pressed against the optical fiber until the blade itself deforms, and the optical fiber is damaged.
In the refracting section, tension is applied to the part of the optical fiber that has been scratched by the optical fiber cutting blade, bent to the opposite side of the scratch, and the optical fiber is cut. At the same time, the coating of the optical fiber is cut by the coating removal blade. Remove.

With reference to FIG. 8, the optical fiber peeling method of this invention is demonstrated.
As shown in FIG. 8A, the lower member and the upper member are engaged with each other in a state where the surfaces on which the groove portions 4 are formed are opposed to each other, and the optical fiber insertion portion formed at the end portion of the groove portion 4 is engaged with the lower member. Then, a single-core coated optical fiber is inserted into the groove of the upper member until the tip exceeds the optical fiber cutting blade. Then, the coated optical fiber is attached to the optical fiber peeling component 1 by being sandwiched between the lower member and the upper member.

  In this state, press the lower member and upper member with your thumb and forefinger as shown in the figure, and also correspond to the optical fiber cutting blade and sheath removal blade of the lower left member and upper left member, which are the left members in the figure A portion to be pressed is pressed with a finger to bring the opposing surfaces of the lower member and the upper member into contact with each other. At this time, the optical fiber cutting blade 9 breaks through the coating of the coated optical fiber, contacts and deforms the cladding surface of the optical fiber, scratches the cladding surface portion, and the coating removal blade 10 cuts the coating of the coated optical fiber to cut the coating. Bite.

  Next, as shown in FIG. 8B, the optical fiber cutting blade is hand-folded on the opposite side (ie, upward in the drawing). At this stage, the optical fiber coating is removed and the bare fiber is exposed at the connecting portion between the left member and the right member. Further bending is performed from FIG. 8C to FIG. At this stage, the optical fiber is cut at a site damaged by the optical fiber cutting blade. At the stage of FIG. 8 (f), the cut optical fiber is opened, and the coating is removed and the bare fiber is exposed as shown in FIG. 8 (g).

  An optical connector was assembled using an optical fiber cut with an optical fiber cutting blade in this way, and a refractive index matching agent was applied to the connection end face and connected. The following connection loss could be realized.

According to the present invention, since the work can be performed by pressing the lower member and the upper member with a finger and pressing with a predetermined force, the terminal portion of the coated optical fiber can be easily processed manually. Moreover, it can process without using a special tool.
Furthermore, since the blade is not moved in a direction perpendicular to the longitudinal axis of the optical fiber (horizontal direction), anyone can easily cut and cut the optical fiber.

According to the present invention, since the optical fiber cutting blade and the coating removal blade are integrally formed with the resin material, the cost can be reduced. In addition, since any blade is formed of a resin material and is lower in cost than the conventional one, the member on which the blade is formed may be discarded after use.
In addition, since the present invention is applied to a coated optical fiber before removing the coating, in this case, the optical fiber that is unnecessary after cutting is a coated optical fiber with a coating. It is also possible to prevent injuries by piercing the hand with the optical fiber coating removed.

  According to the present invention, it is possible to stably operate even in poor working conditions such as in the dark, and it is possible to obtain a good optical fiber cut end from which the coating has been removed, regardless of the skill of the operator. The optical fiber stripping component and the optical fiber stripping method can be provided, and the industrial utility value is high.

FIG. 1 is a perspective view showing an optical fiber peeling component according to the present invention. FIG. 2 is an exploded view of the lower member and the upper member shown in FIG. FIG. 2A is a perspective view showing the lower member. FIG. 2B is a perspective view showing the upper member. FIG. 3 is a schematic cross-sectional view for explaining an optical fiber peeling component according to the present invention. FIG. 4 is a cross-sectional view illustrating the relationship between the groove formed in the lower member and the upper member, the optical fiber cutting blade, and the coating removal blade. FIG. 5 is an enlarged view of a portion A indicated by a dotted circle in FIG. FIG. 6 is a diagram for explaining the protrusion formed in the groove. FIG. 7A is a view for explaining a state in which the flange portion of the optical fiber cutting blade protrudes into the groove portion of the second member. FIG. 7B is a diagram illustrating a stage provided at a portion in the groove facing the optical fiber cutting blade. FIG. 8 is a diagram for explaining the optical fiber peeling method of the present invention. FIG. 9 is a perspective view showing a conventional optical fiber cutter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical fiber peeling part 2 Lower member 2a Lower left member 2b Right lower member 2c Engagement pillar 3 Upper member 3a Upper left member 3b Upper right member 3c Projection part 4, 4-1 Groove part 4-1a, 4-2a Optical fiber insertion part 5 Bending part 6 Optical fiber 7 Connecting part 8 Space part 9 Optical fiber cutting blades 10, 10-1, 10-2 Coating removal blades 11-1, 11-2 Projection part 12 Stage

Claims (15)

  A groove that can accommodate the coated optical fiber in the longitudinal direction, an optical fiber cutting blade that is integrally provided in the groove, and a groove that is integrally provided in the groove with a distance from the optical fiber cutting blade A coating member removing blade, a first member made of a resin material having a refracting portion at an intermediate portion, and a groove portion arranged to face the first member and capable of accommodating a coated fiber and corresponding to the groove portion of the first member And a resin material provided with a coating removal blade corresponding to the coating removal blade of the first member provided integrally in the groove, and a refractive portion corresponding to the refractive portion of the first member in the intermediate portion. An optical fiber peeled part comprising the second member.   Each refracting portion of the intermediate portion is formed of a connecting portion having a small thickness, and one member and the other member of the first member, and one member and the other member of the second member are formed by the connecting portion. The optical fiber stripped parts according to claim 1, wherein the optical fiber stripped parts are connected to each other.   The connecting portion of the second member comprises a recess having one member of the second member and the other member as side walls, and a portion having the small thickness as a bottom, and one member of the second member; The taper part is provided in the end surface of one member of said 2nd member so that the space | interval with the other member of said 2nd member may spread as it leaves | separates from the said small thickness part. Optical fiber stripped parts as described.   The optical fiber peeled component according to claim 2 or 3, wherein a thickness of the connecting portion is within a range of 0.4 to 2.0 mm.   When the first member and the second member are arranged to face each other, a predetermined space portion is provided between the optical fiber cutting blade and the coating removal blade in one member of the first member and the second member. The optical fiber peeled part according to any one of claims 2 to 4, wherein the optical fiber peeled part is provided. When the opposing surfaces of the first member and the second member are brought into contact with each other, the optical fiber cutting blade is pressed against the optical fiber stored in the groove until the blade itself is deformed, and the light The fiber has a height that damages the fiber, and the distance between the coating removal blades of the first member and the second member is substantially equal to the diameter of the optical fiber core of the coated optical fiber. The optical fiber stripped component according to any one of claims 2 to 5. The optical fiber according to any one of claims 1 to 6 , wherein the resin material is made of an epoxy-based or PPS (polyphenylene sulfide) -based synthetic resin, and contains 60% or more of a glass filler. Peeled parts.   Each of the groove portions has a flat bottom surface and both side surfaces inclined from the bottom surface, the optical fiber cutting blade is located in the groove portion, and the top portion of the blade substantially coincides with the surface of the first member. The optical fiber stripped component according to claim 6, wherein the optical fiber stripped component is formed.   Each of the groove portions has a flat bottom surface and both side surfaces inclined from the bottom surface, and the optical fiber cutting blade is located in the groove portion, and the top portion of the blade protrudes into the groove portion of the second member. The optical fiber peeled part according to any one of claims 6 to 8, wherein the optical fiber peeled part is provided.   The optical fiber stripped component according to any one of claims 6 to 9, wherein the distance between the coating removal blades is within a range of 0.128 to 0.140 mm.   The optical fiber peeling component according to any one of claims 8 to 10, wherein an angle of a tip portion of the optical fiber cutting blade and the coating removal blade is within a range of 10 to 45 degrees.   Protrusion for holding the coated optical fiber at at least one corresponding portion in the groove of each portion of the first member and the second member not provided with the optical fiber cutting blade and / or the coating removal blade The optical fiber stripped component according to any one of claims 1 to 11, wherein:   The optical fiber peeled part according to claim 12, wherein the height of the protrusion is in the range of 0.01 to 0.05 mm.   The optical fiber peeling component according to any one of claims 1 to 13, wherein a stage is provided at a portion facing the optical fiber cutting blade in the groove portion of the second member. A first member made of a resin material having a groove portion capable of accommodating a coated optical fiber, an optical fiber cutting blade and a coating removing blade integrally formed in the groove portion, and a refractive portion at an intermediate portion; and a coated fiber A groove portion corresponding to the groove portion of the first member, a sheath removing blade corresponding to the sheath removing blade of the first member integrally provided in the groove portion, and an intermediate portion of the first member. A second member made of a resin material having a refracting portion and a corresponding refracting portion is disposed oppositely, and the coated optical fiber is accommodated in the groove portion,
In the central portion, the first member and the second member are pressed with a predetermined force, and the optical fiber cutting blade is pressed against the optical fiber until the blade itself is deformed to damage the optical fiber. ,
In the refracting portion, a tension is applied to the portion of the optical fiber that is scratched by the optical fiber cutting blade, and the optical fiber is cut by bending to the side opposite to the scratch, and at the same time, the optical fiber is cut by the coating removal blade. An optical fiber peeling method for removing the coating.