JP4646263B1 - Mounting aid for optical connector and optical connector - Google Patents

Abstract

When a front end portion of an optical fiber is fixed to an optical connector, a deflection having a desired size is formed in the optical fiber.
An optical connector mounting auxiliary tool 10 according to the present invention includes an optical connector set portion 12 for setting an optical connector 30, and a distal end portion of an optical fiber 50 in the optical connector 30 set in the optical connector set portion 12. A fiber guide portion 14 having a fiber guide surface 17A for guiding the tip of the optical connector 30 to the optical connector 30 side when the optical connector 30 is inserted, and the optical connector 30 set in the optical connector set portion 12 And a slide support portion 16 for slidably supporting the rear end side of the optical fiber 50 with the front end portion of the optical fiber 50 inserted therein. On the fiber guide surface 17A, a convex portion 18 for forming a deflection in a specific direction (in this case, the upper side) is formed in the optical fiber 50.
[Selection] Figure 1

Description

  The present invention relates to an optical connector mounting aid and an optical connector.

  Patent Document 1 discloses a tool for attaching an optical connector. In this optical connector mounting tool, the optical connector is attached to the insertion auxiliary tool, and the optical fiber is inserted into the optical connector by sliding the attachment tool with respect to the insertion auxiliary tool with the optical fiber attached to the attachment tool. The optical fiber and a built-in optical fiber provided inside the optical connector are butt-connected.

  On the other hand, Patent Document 2 discloses an optical connector. The optical connector includes a frame, a connecting part having an internal optical fiber provided inside the frame, a gripping member that grips the optical fiber cable, a gripping member storage that supports the gripping member with respect to the frame, and a gripping It has a lid that opens and closes the member storage. In this optical connector, the gripping member is housed in the gripping member housing portion with the lid open, and the tip of the optical fiber core protruding from the gripping member is inserted into the connection component. The line and a built-in optical fiber provided inside the connection component are butt-connected.

JP 2007-121863 A JP 2009-139981 A

  However, in the optical connector mounting tool described in Patent Document 1, a deflection is formed in a part of the optical fiber so that the optical fiber and the built-in optical fiber are abutted with a predetermined abutting force. However, when this deflection is formed toward the lower side rather than the upper side, the deflection may interfere with a part of the tool, and a deflection having a desired size may not be formed. In this case, the abutting force between the optical fiber and the built-in optical fiber becomes excessive, and the optical fiber or the built-in optical fiber may be chipped.

  Similarly, in the optical connector described in Patent Document 2, when the deflection is formed toward the lower side instead of the upper side, the deflection is extended from the surrounding connector structure (for example, from the gripping member, and the optical fiber core). In some cases, it is not possible to form a deflection having a desired size by interfering with an extended support portion that supports the line from below. In this case, the abutting force between the optical fiber core wire and the built-in optical fiber becomes excessive, and the optical fiber core wire or the built-in optical fiber may be chipped.

  The present invention has been made in view of the above problems, and an object thereof is to provide an optical connector mounting aid and an optical connector that can form a desired size of deflection.

In order to solve the above-described problem, the optical connector mounting aid according to claim 1 includes an optical connector set portion for setting an optical connector into which a distal end portion of an optical fiber is inserted, and the optical connector set portion. The optical fiber is provided along with the optical connector set part in the axial direction of the optical connector to be set, and when the tip of the optical fiber is inserted into the optical connector set in the optical connector set part . a flexure forming portion bending is formed in the front side, the conjunction is provided alongside the flexure forming portion on the opposite side of the optical connector setting part for bending forming portion, the rear end side of the holding than the tip portion of said optical fiber and the fiber temporarily fixed portion being is formed in a said flexure forming unit blocks the groove and coaxial axis for insertion optical fiber in the optical connector Sea urchin and a, a convex portion that protrudes to the front side of the deflection forming unit.

According to this optical connector mounting aid, for example, the optical connector can be fixed to the tip of the optical fiber in the following manner. That is, first, an optical connector is set in the optical connector setting section. Then, in this state, the optical fiber is slid toward the optical connector set portion while guiding the distal end portion of the optical fiber by the deflection forming portion , and the distal end portion of the optical fiber is inserted into the groove inside the optical connector.

Next, the rear end side of the optical fiber tip is supported by a fiber temporary fixing portion , and the rear end of the built-in optical fiber and the tip of the optical fiber are abutted to form a deflection on the deflection forming portion. Until the rear end side of the optical fiber is slid to the optical connector set part side at the fiber temporary fixing part . And an optical connector is fixed to the front-end | tip part of an optical fiber in the state in which the bending was formed in the optical fiber. The optical connector can be fixed to the tip of the optical fiber in the manner described above.

Here, in this optical connector mounting aid, the bending forming portion, a convex portion which projects to the front side of the bending forming portion so as to block the groove and coaxial axis for insertion optical fiber in the optical connector is protruded ing. Therefore, as described above, even when a deflection is formed in the optical fiber on the deflection forming portion, the deflection forming direction can be defined by a direction away from the deflection forming portion (upper side). Accordingly, it is possible to prevent the deflection from interfering with the deflection forming portion , so that a deflection having a desired size can be formed.

The optical connector mounting auxiliary tool according to claim 2, wherein an optical connector set portion for setting an optical connector into which a tip portion of an optical fiber is inserted, and an axis of the optical connector set in the optical connector set portion The optical fiber is provided alongside the optical connector set portion in the direction, and when the tip end portion of the optical fiber is inserted into the optical connector set in the optical connector set portion, a deflection of the optical fiber is formed on the front side thereof. A flexure forming portion, a fiber temporary fixing portion that is provided side by side with the flexure forming portion on the opposite side of the optical connector set portion with respect to the flexure forming portion, and a rear end side of which is held from the front end portion of the optical fiber ; the provided, and the optical connector setting part and the fiber temporary fixing portion, said to be inserted in the optical connector is set to the optical connector setting part Formed so that the central axis of the front end portion of the fiber and the central axis on the rear end side with respect to the front end portion of the optical fiber held by the fiber temporary fixing portion form an angle that protrudes to the front side of the deflection forming portion. Has been .

According to this optical connector mounting aid, for example, the optical connector can be fixed to the tip of the optical fiber in the following manner. That is, first, an optical connector is set in the optical connector setting section. Then, in this state, the optical fiber is slid toward the optical connector set portion while guiding the distal end portion of the optical fiber by the deflection forming portion , and the distal end portion of the optical fiber is inserted into the groove inside the optical connector.

Next, the rear end side of the front end of the optical fiber is placed along the fiber temporary fixing portion , and the rear end of the built-in optical fiber and the front end of the optical fiber are abutted against each other to form the optical fiber on the deflection forming portion. Until the deflection is formed, the rear end side of the optical fiber is slid to the optical connector set part side on the fiber temporary fixing part . And an optical connector is fixed to the front-end | tip part of an optical fiber in the state in which the bending was formed in the optical fiber. The optical connector can be fixed to the tip of the optical fiber in the manner described above.

Here, in this optical connector mounting aid, the optical connector set portion and the fiber temporary fixing portion are the central axis of the tip of the optical fiber inserted into the optical connector set in the optical connector set portion, and the fiber temporary The central axis on the rear end side with respect to the front end portion of the optical fiber held by the fixing portion is formed so as to form an angle that is convex toward the front side of the deflection forming portion . Therefore, as described above, even when a deflection is formed on the optical fiber on the deflection forming portion , the deflection forming direction can be defined as a direction (upper side) away from the deflection forming portion by this configuration. Accordingly, it is possible to prevent the deflection from interfering with the deflection forming portion , so that a deflection having a desired size can be formed.

The optical connector mounting aid according to claim 3 is the optical connector mounting aid according to claim 1 or 2 , wherein the length of the deflection forming portion along the axial direction is 20 mm or more. It has been configured.

When a widely used optical fiber having an outer diameter of 0.9 mm is used (particularly when the coating material is nylon (registered trademark)), the length along the axial direction of the deflection forming portion is 20 mm. If it is set to less than this, since the curvature of deflection is too large, the abutting force between the optical fiber and the built-in optical fiber becomes excessive, and chipping or the like occurs in the optical fiber or the built-in optical fiber.

On the other hand, according to this optical connector mounting aid, since the length along the axial direction of the deflection forming portion is set to 20 mm or more, even when the above-described 0.9 mm optical fiber is used, The abutting force between the optical fiber and the built-in optical fiber can be set to an appropriate value, thereby suppressing the occurrence of chipping or the like in the optical fiber or the built-in optical fiber.

The optical connector mounting aid according to claim 4 is the optical connector mounting aid according to claim 3 , wherein the length of the deflection forming portion along the axial direction is 25 mm or more and 35 mm or less. It is said that.

As described above, when an optical fiber having an outer diameter of 0.9 mm is used, the length along the axial direction of the deflection forming portion needs to be set to 20 mm or more. Depending on the type of nylon (registered trademark), an optical fiber having higher rigidity than this optical fiber is also assumed. Therefore, in this case, the length along the axial direction of the deflection forming portion needs to be set to 25 mm or more with a margin.

On the other hand, when an optical fiber having a widely used outer diameter of 0.25 mm is used and the length along the axial direction of the deflection forming portion is set to exceed 35 mm, the curvature of deflection is Since it is too small, the abutting force between the optical fiber and the built-in optical fiber is insufficient, and desired optical characteristics may not be obtained.

On the other hand, according to this optical connector mounting aid, since the length along the axial direction of the deflection forming portion is set to 25 mm or more and 35 mm or less, even if the outer diameter is 0.9 mm. Even when using an optical fiber with higher rigidity than a normal optical fiber or when using an optical fiber with an outer diameter of 0.25 mm, the abutting force between the optical fiber and the built-in optical fiber should be an appropriate value. This can prevent the optical fiber or the built-in optical fiber from being chipped or the like, or the abutting force between the optical fiber and the built-in optical fiber from being insufficient to obtain desired optical characteristics. it can.
In addition, as described in claim 5, it is preferable that the deflection forming portion is provided with a fiber guide surface for guiding the optical fiber when the tip portion of the optical fiber is inserted into the optical connector. .

In order to solve the above-described problem, an optical connector assembling method according to claim 6 uses the optical connector mounting aid according to claim 5 to attach the optical connector to the tip of the optical fiber. A method of assembling an optical connector to be fixed, the step of setting the optical connector in the optical connector set portion, and guiding the optical fiber with the deflection forming portion while guiding the optical fiber to the optical connector set. A step of inserting the tip end of the optical fiber into the optical connector, and supporting the rear end side of the optical fiber from the tip end of the optical fiber with the fiber temporary fixing portion , and the built-in light of the optical connector. until bends said optical fiber is formed at the rear end and the front side of the tip and is abutting be in the deflection forming part of the optical fiber of the fiber, prior of the optical fiber A step of sliding so that the optical fiber is inserted into the optical connector rear end by the fiber temporarily fixed portion than parts, the a tip portion of the optical fiber in a state of bending to said optical fiber is formed Fixing the optical connector.

According to this optical connector assembling method, since the optical connector mounting aid according to claim 5 is used, even when an optical fiber having an outer diameter of 0.9 mm is used as described above, the optical fiber and the built-in optical fiber are built in. The abutting force with the optical fiber can be set to an appropriate value, thereby suppressing the occurrence of chipping or the like in the optical fiber or the built-in optical fiber.

  As described above in detail, according to the present invention, a deflection having a desired size can be formed.

It is a figure which shows a mode that an optical fiber is inserted in an optical connector using the attachment auxiliary tool for optical connectors which concerns on 1st embodiment of this invention. It is a figure which shows the state which fixed the optical connector to the front-end | tip part of an optical fiber using the attachment auxiliary tool for optical connectors of FIG. FIG. 2 is a plan sectional view of the optical connector shown in FIG. 1. It is a figure which shows the relationship between the butting force of an optical fiber, and the deflection length. It is a figure which shows the relationship between the butting force of an optical fiber, and the deflection length. It is a figure which shows the state which fixed the optical connector to the front-end | tip part of an optical fiber using the attachment auxiliary tool for optical connectors which concerns on 2nd embodiment of this invention. It is a figure which shows the modification of the attachment auxiliary tool for optical connectors which concerns on 2nd embodiment of this invention. It is a figure which shows the state which fixed the optical fiber cable to the optical connector which concerns on 3rd embodiment of this invention. It is a figure which shows the order which fixes an optical fiber cable to the optical connector shown by FIG. It is a figure which shows the order which fixes an optical fiber core wire to the fiber fixing part shown by FIG. It is a figure which shows the modification of the optical connector which concerns on 3rd embodiment of this invention. It is a figure which shows the state which fixed the optical fiber cable to the optical connector which concerns on 4th embodiment of this invention. It is a figure which shows the order which fixes an optical fiber cable to the optical connector shown by FIG. It is a figure which shows the state which fixed the optical fiber cable to the optical connector which concerns on 5th embodiment of this invention. It is a figure which shows the order which fixes an optical fiber cable to the optical connector shown by FIG. It is a figure which shows the order which fixes an optical fiber cable to the optical connector which concerns on 6th embodiment of this invention. It is a figure which shows the attachment auxiliary tool for optical connectors which concerns on the reference example of this invention. It is a figure which shows the attachment auxiliary tool for optical connectors which concerns on the reference example of this invention.

[First embodiment]
First, a first embodiment of the present invention will be described.

  An optical connector mounting aid 10 according to the first embodiment of the present invention shown in FIGS. 1 and 2 is for fixing an optical connector to the tip of an optical fiber. And a fiber guide portion 14 (deflection forming portion) and a slide support portion 16 (temporary fiber fixing portion).

  The optical connector setting unit 12 is for setting the optical connector 30, and a positioning projection 12 </ b> A for positioning the optical connector 30, a holding claw 12 </ b> B for holding the optical connector 30, and the like on the surface thereof. Is formed.

  The fiber guide portion 14 is provided side by side with the optical connector set portion 12 in the axial direction of the optical connector 30 set in the optical connector set portion 12. A pair of guide walls 17 are formed in parallel in the fiber guide portion 14 along the axial direction of the optical connector 30. A fiber guide surface having a V-shaped cross section is formed between the pair of guide walls 17. 17A is formed.

  The slide support portion 16 is provided on the side opposite to the optical connector set portion 12 with respect to the fiber guide portion 14. A planar slide support surface 16A is formed on the surface of the slide support portion 16. The slide support surface 16A has, for example, the length (terminal) of the bare fiber 50B at the distal end portion of the optical fiber 50 described later. A scale 16B for confirming (processing length) is attached. In addition, you may use this scale 16B as a standard of the pushing amount of the optical fiber 50 mentioned later.

  In addition, a convex portion 18 is formed in the intermediate portion in the longitudinal direction of the above-described fiber guide surface 17A (on the slide support portion 16 side with respect to the central portion in the longitudinal direction). As shown in FIG. 1, the convex portion 18 is provided at the center in the width direction of the fiber guide surface 17A, and the height thereof is set in the optical connector set portion 12 as shown in FIG. It is set higher than the central axis A1 of the optical connector 30. The central axis A1 of the optical connector 30 coincides with the central axis of a groove 43 described later.

  Further, as shown in FIG. 1, the protruding end of each guide wall 17 is an arc portion 17B, and this arc portion 17B is the protruding direction of the guide wall 17 (the direction toward the fiber guide surface 17A). In this case, it is formed in a circular arc shape projecting upward.

  In the present embodiment, the optical connector mounting aid 10 is used for an optical fiber having an outer diameter of 0.9 mm that is currently widely used (the material of the coating is nylon (registered trademark) or PVC). The length of the fiber guide portion 14 along the axial direction is set to 20 mm or more.

  As shown in FIG. 3, the optical connector 30 is a so-called mechanical connection type, and includes a plug 32, a spring 33, a frame 34, a support member 35, and a slider 36. Yes.

  The plug 32 includes a ferrule 37 and a fiber fixing portion 38. The ferrule 37 has a built-in optical fiber 39 and is integrally assembled with a substrate 40 of a fiber fixing portion 38 to be described later.

  The fiber fixing portion 38 includes a substrate 40, a pair of lid members 41, and a pressing member 42. A groove 43 having a V-shaped cross section is formed in the surface portion of the substrate 40 along the axial direction of the optical connector 30, and the rear end side of the built-in optical fiber 39 is inserted into the groove 43. .

  The pair of lid members 41 are arranged side by side in the longitudinal direction of the groove 43, and are configured to have a size and shape that cover the surface portion of the substrate 40 on which the groove 43 is formed. It is provided facing. Further, the pair of lid members 41 are pressed toward the substrate 40 by a pair of pressing pieces 42 </ b> A formed on the pressing member 42.

  The substrate 40 and the pair of lid members 41 are formed with recesses (both not shown) into which the protrusions formed on the wedge 44 shown in FIGS. 1 and 2 can be inserted. The pair of lid members 41 can be separated from the substrate 40 against the pressing force of the pressing member 42 by inserting a convex portion into the concave portion.

  The frame 34 accommodates the plug 32 so as to be slidable in the axial direction, and the spring 33 is provided inside the frame 34 and urges the plug 32 toward the distal end side with respect to the frame 34. The support member 35 is assembled to the outer peripheral portion of the frame 34, and the slider 36 is provided outside the support member 35 and is slidably supported by the support member 35.

  Next, the operation and effect will be described together with a method of fixing the optical connector to the tip end portion of the optical fiber using the optical connector mounting aid 10.

  First, as shown in FIG. 1, the coating on the tip side of the tip portion 50A of the optical fiber 50 is removed to expose the bare fiber 50B, and the tip of the bare fiber 50B is cut. In addition, the optical connector 30 is positioned by the positioning protrusion 12A, and the optical connector 30 is held by the holding claws 12B, thereby setting the optical connector 30 in the optical connector setting portion 12.

  Then, the optical fiber 50 is slid toward the optical connector set portion 12 while guiding the distal end portion 50A of the optical fiber 50 by the fiber guide surface 17A, and the distal end portion 50A of the optical fiber 50 is grooved inside the optical connector 30. 43.

  Next, as shown in FIG. 2, the rear end side 50C of the optical fiber 50 is placed on the slide support surface 16A from the front end portion 50A, and the rear end of the built-in optical fiber 39 and the front end of the optical fiber 50 are arranged. Until the rear end side 50C of the optical fiber 50 is slid toward the optical connector set 12 side on the slide support surface 16A until the deflection 52 is formed in the optical fiber 50 on the fiber guide surface 17A. At this time, the rear end side 50C of the optical fiber 50 is slid by the gripping part 19 such as a gripping tool or a finger.

  Then, the wedge 44 is removed from the optical connector 30 with the deflection 52 formed in the optical fiber 50. Thereby, as shown in FIG. 3, the lid member 41 is pressed toward the substrate 40 by the pressing member 42, and the distal end portion 50 </ b> A of the optical fiber 50 is fixed to the fiber fixing portion 38. The optical connector 30 can be fixed to the distal end portion 50A of the optical fiber 50 in the manner described above.

  Here, in this optical connector mounting aid 10, a convex portion 18 is formed in the middle portion in the longitudinal direction of the fiber guide surface 17 </ b> A. The height of the convex portion 18 is set higher than the central axis A1 of the optical connector 30. Therefore, as described above, even when the deflection 52 is formed in the optical fiber 50 on the fiber guide surface 17A, the direction in which the deflection 52 is formed is defined by the convex portion 18 in the direction away from the fiber guide surface 17A (upper side). be able to. Thereby, since it is possible to prevent the deflection 52 from interfering with the fiber guide surface 17A, the deflection 52 having a desired size can be formed.

  As a result, the abutting force between the optical fiber 50 and the built-in optical fiber 39 can be adjusted to an appropriate value, so that the abutting force is insufficient and the optical characteristics are deteriorated, or the abutting force is excessive. This can prevent the optical fiber 50 and the built-in optical fiber 39 from being chipped.

  In addition, according to the optical connector mounting aid 10, the projection 18 is provided on the fiber guide surface 17 </ b> A, so that the optical fiber 50 is warped so as to bend downward, or the optical fiber 50 is The deflection 52 can be formed in the direction away from the fiber guide surface 17A (upper side) in any case, for example, when inserted into the groove 43 from the upper rear side or when the work method differs depending on the operator.

  Moreover, according to the optical connector mounting aid 10, the protruding end of each guide wall 17 is configured as a circular arc portion 17 </ b> B that protrudes in the protruding direction of the guide wall 17. Therefore, the operator can visually check whether or not the deflection 52 is formed in an appropriate size by using the arc portion 17B.

  By the way, when an optical fiber having an outer diameter of 0.9 mm, which is widely used at present, is used (particularly, when the coating material is nylon (registered trademark)), the length along the axial direction of the fiber guide portion 14 is long. When the length is set to less than 20 mm, there is the following problem.

  Here, in FIGS. 4 and 5, an optical fiber having an outer diameter of 0.9 mm (the material of the coating is nylon (registered trademark) or PVC) and an outer diameter of 0.25 mm are widely used at present. The relationship between the abutment force of the optical fiber and the deflection length is shown. Note that the measurement results in FIGS. 4 and 5 are measured with the same push amount of the optical fiber.

  As shown in these drawings, when an optical fiber having a widely used outer diameter of 0.9 mm (the material of the coating is nylon (registered trademark)) is used along the axial direction of the fiber guide portion 14. If the length is set to be less than 20 mm, the curvature of the deflection 52 is too large, so that the abutting force between the optical fiber 50 and the built-in optical fiber 39 exceeds 2.5 N, and the abutting force becomes excessive. In this case, the abutting force between the optical fiber 50 and the built-in optical fiber 39 becomes excessive, and the optical fiber 50 and the built-in optical fiber 39 are chipped.

  On the other hand, according to this optical connector mounting aid 10, the length along the axial direction of the fiber guide portion 14 is set to 20 mm or more. Even when nylon (registered trademark) is used, the abutting force between the optical fiber 50 and the built-in optical fiber 39 can be set to an appropriate value. Can be prevented from occurring.

  As described above, when an optical fiber having an outer diameter of 0.9 mm (the coating material is nylon (registered trademark)) is used, the length along the axial direction of the fiber guide portion 14 is set to 20 mm or more. However, depending on the manufacturing error and the type of nylon (registered trademark) which is the material of the coating, an optical fiber having higher rigidity than this optical fiber is also assumed. Therefore, in this case, the length along the axial direction of the fiber guide portion 14 may be set to 25 mm or more with a margin.

  On the other hand, as shown in FIG. 5, when an optical fiber having a widely used outer diameter of 0.25 mm is used, the length along the axial direction of the fiber guide portion 14 is set to exceed 35 mm. In this case, since the curvature of the deflection 52 is too small, the influence of the viscosity of the grease between the optical fiber 50 and the built-in optical fiber 39, the frictional force between the optical fiber 50 and the substrate 40, etc. The abutting force is not transmitted to the tip, but the abutting force between the optical fiber 50 and the built-in optical fiber 39 is less than 0.03N, and the abutting force is insufficient. In this case, the distance between the end faces of both fibers is increased, and the desired optical characteristics may not be obtained.

  Therefore, as described above, even when the outer diameter is 0.9 mm, an optical fiber having higher rigidity than that of a normal optical fiber is used, or an optical fiber having an outer diameter of 0.25 mm that is currently widely used. When the length is used, the length of the fiber guide portion 14 along the axial direction may be set to 25 mm or more and 35 mm or less.

  When configured in this manner, even when the outer diameter is 0.9 mm, an optical fiber having a higher rigidity than a normal optical fiber is used, or an outer diameter that is currently widely used is 0.25 mm. Even in the case of using an optical fiber, the abutting force between the optical fiber 50 and the built-in optical fiber 39 can be set to an appropriate value, thereby causing the optical fiber 50 or the built-in optical fiber 39 to be chipped or the like. It is possible to prevent the abutting force between the optical fiber 50 and the built-in optical fiber 39 from being insufficient and obtaining desired optical characteristics.

  In this embodiment, the height of the convex portion 18 is set to be higher than the central axis A1 of the optical connector 30 set in the optical connector set portion 12, but the direction in which the deflection 52 is formed by the convex portion 18 is set. If it can be defined in the direction away from the fiber guide surface 17A (upper side), the height of the convex portion 18 may be set at the same position as the central axis A1 of the optical connector 30 set in the optical connector set portion 12. good.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.

  The optical connector mounting aid 20 according to the second embodiment of the present invention shown in FIG. 6 is modified as follows with respect to the optical connector mounting aid 10 according to the first embodiment of the present invention described above. Has been.

  That is, the fiber guide portion 14 is bent in a U-shape, whereby the slide support surface 16A faces the opposite side of the optical connector set portion 12 and the central axis A1 (axial direction) of the optical connector 30 (Tilt angle θ).

  Next, the operation and effect will be described together with a method of fixing the optical connector to the tip portion of the optical fiber using the optical connector mounting aid 20.

  First, as in the first embodiment of the present invention described above, the tip 50A of the optical fiber 50 is inserted into the groove 43 inside the optical connector 30 with the optical connector 30 set in the optical connector set 12 ( FIG. 1 and FIG. 3).

  Next, as shown in FIG. 6, the rear end side 50C of the optical fiber 50 is placed along the slide support surface 16A, and the rear end of the built-in optical fiber 39 and the front end of the optical fiber 50 are abutted. The rear end side 50C of the optical fiber 50 is slid to the optical connector set portion 12 side on the slide support surface 16A until the deflection 52 is formed in the optical fiber 50 on the fiber guide surface 17A.

  Then, the wedge 44 is removed from the optical connector 30 with the deflection 52 formed in the optical fiber 50. Accordingly, the lid member 41 is pressed toward the substrate 40 by the pressing member 42, and the tip portion 50A of the optical fiber 50 is fixed to the fiber fixing portion 38 (see FIG. 3). The optical connector 30 can be fixed to the distal end portion 50A of the optical fiber 50 in the manner described above.

  Here, in this optical connector mounting aid 20, the above-described slide support surface 16 </ b> A is inclined with respect to the central axis A <b> 1 of the optical connector 30 so as to face the side opposite to the optical connector set portion 12 (inclination angle). θ). Therefore, as described above, even when the deflection 52 is formed in the optical fiber 50 on the fiber guide surface 17A, the direction in which the deflection 52 is formed away from the fiber guide surface 17A due to the inclination of the slide support surface 16A (upper side). Can be specified. Thereby, since it is possible to prevent the deflection 52 from interfering with the fiber guide surface 17A, the deflection 52 having a desired size can be formed.

  As a result, the abutting force between the optical fiber 50 and the built-in optical fiber 39 can be adjusted to an appropriate value, so that the abutting force is insufficient and the optical characteristics are deteriorated, or the abutting force is excessive. This can prevent the optical fiber 50 and the built-in optical fiber 39 from being chipped.

  Further, according to this optical connector mounting aid 20, when the slide is supported on the optical fiber 50 by inclining the slide support surface 16A, or when the optical fiber 50 is grooved from the upper rear side. In any case, for example, when inserting into 43 or when the method of operation differs depending on the operator, the deflection 52 can be formed in the direction away from the fiber guide surface 17A (upper side).

  In the present embodiment, the fiber guide portion 14 is bent in a U-shape so that the slide support surface 16A faces the side opposite to the optical connector set portion 12 with respect to the central axis A1 of the optical connector 30. Although tilted, as shown in FIG. 7, the central axis of the optical connector 30 is such that the slide support surface 16A faces the side opposite to the optical connector set portion 12 while the fiber guide portion 14 is formed in a straight line. It may be inclined with respect to A1.

[Third embodiment]
Next, a third embodiment of the present invention will be described.

  The optical connector 60 according to the third embodiment of the present invention shown in FIG. 8 is attached to the tip of an optical fiber cable 120 described later, and includes a plug 62, a cable fixing member 64, a frame 66, and a fixing. A storage member 68 as a support portion is provided as a main configuration.

  The plug 62 includes a ferrule 70 and a fiber fixing portion 72. The ferrule 70 has a built-in optical fiber 74 and is integrally assembled with a substrate 76 of a fiber fixing portion 72 described later.

  The fiber fixing portion 72 is a so-called mechanical splice system, and includes a substrate 76, a pair of lid members 78, and a pressing member 80. A groove 82 is formed in the surface portion of the substrate 76 along the axial direction of the optical connector 60, and the rear end side of the built-in optical fiber 74 is inserted into the groove 82.

  The pair of lid members 78 are arranged side by side in the longitudinal direction of the groove 82, and each has a size and shape that covers the surface portion of the substrate 76 in which the groove 82 is formed. It is provided facing. Further, the pair of lid members 78 are pressed toward the substrate 76 by the pressing member 80.

  In this optical connector 60, as shown in FIG. 10, a concave portion 86 into which a wedge 84, which is provided as an integral part of the optical connector 60 or as a separate jig, can be inserted, is provided with a substrate 76 and a pair of A lid member 78 is formed. The pair of lid members 78 can be separated from the substrate 76 by inserting the wedge 84 into the recess 86.

  As shown in FIG. 8, the cable fixing member 64 is configured separately from the plug 62 and the frame 66, and a pair of gripping portions as a cable fixing portion that grips an outer skin portion 124 of the optical fiber cable 120 described later. 88 and an extended support portion 90. The extension support portion 90 is for supporting the protruding portion 122A of the optical fiber core wire 122 from below, and extends from one of the pair of grip portions 88 toward the fiber fixing portion 72 side. Further, a protruding portion 92 is formed at the tip of the extended support portion 90 toward the lid 108 described later. The height of the convex portion 92 is set to be higher than the central axis A2 of the fiber fixing portion 72 (the central axis of the groove 82).

  The housing member 68 has a fitting portion 94 formed on the frame 66 side. When the fitting portion 94 is fitted to the housing member 68 side of the frame 66, the frame 66 and the housing member 68 are separated from each other. They are assembled together.

  The above-described fiber fixing portion 72 is accommodated inside the frame 66, and the ferrule 70 provided integrally with the fiber fixing portion 72 protrudes to the outside through a hole portion 96 formed on the distal end side of the frame 66. Has been. On the other hand, on the frame 66 side of the storage member 68, a guide hole 100 is formed which communicates with the groove 82 and increases in diameter toward the cable fixing member 64 side.

  Further, the above-described substrate 76 and lid member 78 have an enlarged diameter portion 102, and a spring 104 is accommodated in a compressed state between the enlarged diameter portion 102 and the fitting portion 94. The plug 62 is urged toward the distal end side of the optical connector 60 by the spring 104.

  The storage member 68 described above includes a main body 106 having a storage chamber 106A and a lid 108 for opening and closing the storage chamber 106A. The lid 108 is pivotally connected to the main body 106 at the front end side, and is in an open state (see the upper diagram in FIG. 9) for opening the storage chamber 106A and a closed state (see the lower diagram in FIG. 9) for closing the storage chamber 106A. ) And can be taken. Further, a retaining portion 110 for preventing the cable fixing member 64 from coming off is formed on the rear end side of the lid 108.

  Although not shown, the storage member 68 includes a restriction structure for restricting the movement of the cable fixing member 64 toward the fiber fixing portion 72 and a holding structure for holding the lid 108 in a closed state. Yes.

  The optical fiber cable 120 includes an optical fiber core wire 122 and a sheath portion 124 (sheath or tensile body) that covers the optical fiber core wire 122. Further, at the distal end side of the optical fiber cable 120, a part of the optical fiber core wire 122 protrudes from the end portion of the outer skin portion 124 as a protruding portion 122A by cutting the outer skin portion 124 described above.

  Next, the operation and effect will be described together with a method for fixing the optical connector 60 to the tip of the optical fiber.

  First, as shown in the upper diagram of FIG. 9, the outer skin portion 124 on the distal end side of the optical fiber cable 120 is removed to expose the optical fiber core wire 122. Subsequently, the distal end side of the outer skin portion 122 of the optical fiber cable 120 is gripped by the pair of holding portions 88, and the cable fixing member 64 is fixed to the optical fiber cable 120. Furthermore, the bare fiber 122B is exposed by removing the coating on the distal end side of the protruding portion 122A (exposed portion) of the optical fiber core wire 122 protruding from the end portion of the outer sheath portion 124 of the optical fiber cable 120, thereby exposing the bare fiber 122B. Cut the tip.

  Then, the lid 108 is opened, the cable fixing member 64 is brought close to the fiber fixing portion 72, the distal end side of the protruding portion 122 </ b> A of the optical fiber core wire 122 is inserted into the groove 82 through the guide hole 100, and the cable fixing member 64. Is disposed in the storage chamber 106A (see FIG. 9).

  Next, the cable fixing member 64 is fixed to the fiber fixing portion 72 until the rear end of the built-in optical fiber 74 and the tip of the optical fiber core wire 122 are abutted to form a deflection 126 in the protruding portion 122A of the optical fiber core wire 122. (See the lower figure in FIG. 9).

  Then, the wedge 84 is removed from the fiber fixing portion 72 as shown in FIG. 10 in a state where the deflection 126 is formed in the protruding portion 122 </ b> A of the optical fiber core wire 122. Thereby, the lid member 78 is pressed toward the substrate 76 by the pressing member 80, and the protruding portion 122 </ b> A of the optical fiber core wire 122 is fixed to the fiber fixing portion 72.

  Next, with the lid 108 closed, the cable fixing member 64 is stored in the storage member 68, whereby the cable fixing member 64 is fixedly supported to the fiber fixing portion 72. As described above, the optical connector 60 is fixed to the optical fiber cable 120.

  Here, in this optical connector 60, as shown in FIG. 8, a convex portion 92 is formed between the fiber fixing portion 72 and the cable fixing member 64. The height of the convex portion 92 is set to be higher than the central axis A2 of the fiber fixing portion 72. Therefore, as described above, even when the cable fixing member 64 is brought close to the fiber fixing portion 72 to form the deflection 126 in a part of the protruding portion 122A of the optical fiber core wire 122, the direction in which the deflection 126 is formed by the convex portion 92. Can be defined in a specific direction (upper side). Accordingly, the deflection 126 can be prevented from interfering with the surrounding connector structure portion (in this case, the extended support portion 90), so that the deflection 126 having a desired size can be formed.

  As a result, the abutting force between the optical fiber core wire 122 and the built-in optical fiber 74 can be adjusted to an appropriate value, so that the abutting force is insufficient and the optical characteristics are deteriorated or the abutting force is excessive. Therefore, it is possible to prevent the optical fiber core wire 122 and the built-in optical fiber 74 from being chipped.

  In the present embodiment, the convex portion 92 is formed at the tip of the extended support portion 90 formed in the cable fixing member 64. However, as shown in FIG. You may protrude from the main-body part 106. FIG.

  When configured in this manner, the protrusion 122A of the optical fiber core wire 122 does not bend at the stage of inserting the protrusion 122A of the optical fiber core wire 122 into the groove 82 (see the upper diagram of FIG. 9). The protrusion 122A of the optical fiber core wire 122 can be easily inserted into the groove 82.

  In addition, the convex portion 92 may be configured to be movable in the lateral direction of the optical connector 60 (front and back direction in the drawing). Then, when forming the flexure 126, the convex portion 92 is moved on the central axis of the optical connector 60 to form the flexure 126 in a part of the protruding portion 122 A of the optical fiber core wire 122. After the core wire 122 and the built-in optical fiber 74 are butted and connected, the convex portion 92 is moved to a position deviated from the central axis of the optical connector 60 and the cable fixing member 64 is retracted to eliminate the deflection 126. Anyway.

  In the present embodiment, the height of the convex portion 92 is set to be higher than the central axis A2 of the fiber fixing portion 72. However, the convex portion 92 defines the formation direction of the deflection 126 in a specific direction (upper side). If possible, the height of the convex portion 92 may be set at the same position as the central axis A <b> 2 of the fiber fixing portion 72.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described.

  The optical connector 130 according to the fourth embodiment of the present invention shown in FIG. 12 is modified as follows with respect to the optical connector 60 according to the third embodiment of the present invention described above.

  In other words, the cable fixing member 64 is formed with a movable piece 132 extending from one of the pair of gripping portions 88 toward the fiber fixing portion 72. The movable piece 132 has a function of supporting the protruding portion 122A of the optical fiber core wire 122 from the lower side in the same manner as the extending support portion 90 described above. Further, a convex portion 134 that protrudes toward the lid 108 is formed at the tip of the movable piece 132. On the other hand, the main body portion 106 of the storage member 68 is formed with a contact portion 136 that protrudes to the same side as the convex portion 134. The contact portion 136 is formed in a mountain shape in a side view.

  In the optical connector 130, the movable piece 132 comes into contact with the inclined surface of the contact portion 136 as the cable fixing member 64 is moved to the fiber fixing portion 72, thereby deforming the movable piece 132. The convex portion 134 of the movable piece 132 is positioned higher than the center axis A2 of the fiber fixing portion 72.

  Next, the operation and effect will be described together with a method of fixing the optical connector 130 to the tip of the optical fiber.

  First, as in the first embodiment of the present invention described above, the lid 108 is opened, and the cable fixing member 64 is fixed to the outer sheath portion 124 of the optical fiber cable 120 (see the upper diagram of FIG. 13). .

  Then, the cable fixing member 64 is brought close to the fiber fixing portion 72, the protruding portion 122A of the optical fiber core wire 122 is inserted into the groove 82 through the guide hole 100, and the cable fixing member 64 is disposed in the storage chamber 106A (FIG. 13). (See the middle figure).

  Next, when the cable fixing member 64 is further brought closer to the fiber fixing portion 72 from this state, the movable piece 132 comes into a deformed state due to the movable piece 132 coming into contact with the inclined surface of the contact portion 136. The convex portion 134 is positioned at a position higher than the central axis A2 of the fiber fixing portion 72. As a result, the convex part 134 at the tip of the movable piece 142132 pushes up a part of the protruding part 122A of the optical fiber core wire 122, so that a deflection 126 is formed in a part of the protruding part 122A of the optical fiber core wire 122. (See the lower diagram in FIG. 13).

  Then, the wedge 84 is removed from the fiber fixing portion 72 in a state where the deflection 126 is formed in the optical fiber core wire 122 (see FIG. 10). Thereby, the lid member 78 is pressed toward the substrate 76 by the pressing member 80, and the protruding portion 122 </ b> A of the optical fiber core wire 122 is fixed to the fiber fixing portion 72.

  Next, with the lid 108 closed, the cable fixing member 64 is stored in the storage member 68, whereby the cable fixing member 64 is fixedly supported to the fiber fixing portion 72. As described above, the optical connector 130 is fixed to the optical fiber cable 120.

  Thus, according to this optical connector 130, when the cable fixing member 64 is brought close to the fiber fixing portion 72 as described above, the movable piece 132 bends to a part of the protruding portion 122A of the optical fiber core wire 122. 126 can be formed, and the forming direction of the deflection 126 can be defined in a specific direction (upper side). Accordingly, it is possible to prevent the flexure 126 from interfering with the surrounding connector structure portion (in this case, the movable piece 132 having a function as the extension support portion), so that the flexure 126 having a desired size is formed. be able to.

  As a result, the abutting force between the optical fiber core wire 122 and the built-in optical fiber 74 can be adjusted to an appropriate value, so that the abutting force is insufficient and the optical characteristics deteriorate or the abutting force is excessive. Therefore, it is possible to prevent the optical fiber core wire 122 and the built-in optical fiber 74 from being chipped.

  Further, according to the optical connector 130, the protrusion 122A of the optical fiber core 122 is not bent at the stage of inserting the protrusion 122A of the optical fiber core 122 into the groove 82 (see the upper diagram in FIG. 13). The protrusion 122A of the optical fiber core wire 122 can be easily inserted into the groove 82.

  In this embodiment, when the movable piece 132 is deformed, the convex portion 134 at the tip of the movable piece 132 is configured to be positioned at a position higher than the central axis A2 of the fiber fixing portion 72. If the formation direction of the deflection 126 can be defined in a specific direction (upper side) by the convex portion 134, the convex portion 134 at the tip of the movable piece 132 is deformed with respect to the fiber fixing portion 72 when the movable piece 132 is deformed. You may be comprised so that it may be located in the same position as center axis A2.

[Fifth embodiment]
Next, a fifth embodiment of the present invention will be described.

  The optical connector 140 according to the fifth embodiment of the present invention shown in FIG. 14 is configured as follows with respect to the optical connector 60 according to the third embodiment of the present invention described above.

  That is, the cable fixing member 64 is formed with an extension support portion 141 that extends from one of the pair of gripping portions 88 toward the plug 62 side. A movable piece 142 having elasticity is formed on the main body portion 106 of the storage member 68, and a convex portion 144 that protrudes toward the lid 108 is formed at the tip of the movable piece 142. The movable piece 142 is configured to be elastically deformable so that the convex portion 144 is positioned at a position higher than the central axis A2 of the fiber fixing portion 72 when a force is applied from below.

  Next, the operation and effect will be described together with a method of fixing the optical connector 140 to the tip of the optical fiber.

  First, as in the first embodiment of the present invention described above, the lid 108 is opened, and the cable fixing member 64 is fixed to the outer sheath portion 124 of the optical fiber cable 120 (see the upper diagram of FIG. 15). .

  Then, the cable fixing member 64 is brought close to the fiber fixing portion 72, the protruding portion 122A of the optical fiber core wire 122 is inserted into the groove 82 through the guide hole 100, and the cable fixing member 64 is disposed in the storage chamber 106A (FIG. 15). (See the middle figure).

  At this time, a force is applied to the movable piece 142 from below to elastically deform the movable piece 142, and the convex portion 144 at the tip of the movable piece 142 is positioned higher than the central axis A2 of the fiber fixing portion 72. As a result, the convex portion 144 at the tip of the movable piece 142 pushes up a part of the protruding portion 122A of the optical fiber core wire 122. The rear end of the fiber 74 and the front end of the optical fiber core wire 122 are abutted.

  Then, the wedge 84 is removed from the fiber fixing portion 72 in a state where the deflection 126 is formed in the optical fiber core wire 122 (see FIG. 10). Accordingly, the lid member 78 is pressed toward the substrate 76 by the pressing member 80, and the protruding portion 122 </ b> A of the optical fiber core wire 122 is fixed to the fiber fixing portion 72.

  Next, the lid 108 is closed, the cable fixing member 64 is stored in the storage member 68, and the cable fixing member 64 is fixedly supported to the fiber fixing portion 72. As described above, the optical connector 140 is fixed to the optical fiber cable 120.

  Thus, according to the optical connector 140, when the cable fixing member 64 is brought close to the fiber fixing portion 72 as described above, the movable piece 142 bends to a part of the protruding portion 122A of the optical fiber core wire 122. 126 can be formed, and the forming direction of the deflection 126 can be defined in a specific direction (upper side). Accordingly, it is possible to prevent the deflection 126 from interfering with the surrounding connector structure portion (in this case, the extended support portion 141), so that the deflection 126 having a desired size can be formed.

  As a result, the abutting force between the optical fiber core wire 122 and the built-in optical fiber 74 can be adjusted to an appropriate value, so that the abutting force is insufficient and the optical characteristics are deteriorated or the abutting force is excessive. Therefore, it is possible to prevent the optical fiber core wire 122 and the built-in optical fiber 74 from being chipped.

  In the present embodiment, when the movable piece 142 is most elastically deformed by applying a force from below, the convex portion 144 at the tip of the movable piece 142 is positioned higher than the central axis A2 of the fiber fixing portion 72. However, if the formation direction of the deflection 126 can be defined in a specific direction (upper side) by the convex portion 144, the movable piece 142 is applied with a force from the lower side to be most elastically deformed. In this case, the convex portion 144 at the tip of the movable piece 142 may be configured to be located at the same position as the central axis A2 of the fiber fixing portion 72.

  Further, in a state where the lid 108 is closed and the cable fixing member 64 is stored in the storage member 68, the cable fixing member 64 may be retracted and the deflection 126 may be eliminated. With such a configuration, it is possible to prevent the optical characteristics of the optical fiber core 122 from being deteriorated due to the deflection 126.

[Sixth embodiment]
Next, a sixth embodiment of the present invention will be described.

  The optical connector 150 according to the sixth embodiment of the present invention shown in FIG. 16 has the following configuration with respect to the optical connector 60 according to the third embodiment of the present invention described above.

  That is, the guide hole 100 is configured to have the central axis A3 at a position eccentric to the lid 108 side with respect to the central axis A2 of the fiber fixing portion 72 (the central axis of the groove 82).

  Next, the operation and effect will be described together with a method of fixing the optical connector 150 to the tip of the optical fiber.

  First, as in the first embodiment of the present invention described above, the lid 108 is opened and the cable fixing member 64 is fixed to the outer skin portion 124 of the optical fiber cable 120. Further, the cable fixing member 64 is brought close to the fiber fixing portion 72, and the protruding portion 122 A of the optical fiber core wire 122 is inserted into the guide hole 100 and then inserted into the groove 82. (Refer to the upper diagram of FIG. 16).

  Next, the cable fixing member 64 is fixed to the fiber fixing portion 72 until the rear end of the built-in optical fiber 74 and the tip of the optical fiber core wire 122 are abutted to form a deflection 126 in the protruding portion 122A of the optical fiber core wire 122. Move closer to.

  Then, the wedge 84 is removed from the fiber fixing portion 72 in a state where the deflection 126 is formed in the optical fiber core wire 122 (see FIG. 10). Thereby, the lid member 78 is pressed toward the substrate 76 by the pressing member 80, and the protruding portion 122 </ b> A of the optical fiber core wire 122 is fixed to the fiber fixing portion 72.

  Next, with the lid 108 closed, the cable fixing member 64 is stored in the storage member 68, whereby the cable fixing member 64 is fixedly supported to the fiber fixing portion 72. As described above, the optical connector 150 is fixed to the optical fiber cable 120.

  Here, in the optical connector 150, the guide hole 100 has a central axis A3 at a position eccentric to the lid 108 side with respect to the central axis A2 of the fiber fixing portion 72. Therefore, as described above, when the cable fixing member 64 is brought close to the fiber fixing portion 72, the center axis A3 of the guide hole 100 is set at a position eccentric with respect to the center axis A2 of the fiber fixing portion 72. Accordingly, the deflection 126 can be formed in a part of the protruding portion 122A of the optical fiber core wire 122, and the direction in which the deflection 126 is formed can be defined in a specific direction (upper side). Accordingly, the deflection 126 can be prevented from interfering with the surrounding connector structure portion (in this case, the extended support portion 90), so that the deflection 126 having a desired size can be formed.

  As a result, the abutting force between the optical fiber core wire 122 and the built-in optical fiber 74 can be adjusted to an appropriate value, so that the abutting force is insufficient and the optical characteristics deteriorate or the abutting force is excessive. Therefore, it is possible to prevent the optical fiber core wire 122 and the built-in optical fiber 74 from being chipped.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and other various modifications can be made without departing from the spirit of the present invention. It is.

  A reference example of the present invention will be described below.

[First Reference Example]
The optical connector mounting aid 160 according to the first reference example of the present invention shown in FIG. 17 is modified as follows with respect to the optical connector mounting aid 10 according to the first embodiment of the present invention described above. Has been.

  That is, the fiber guide part 14 is formed with a concave part 162 formed of an arcuate counterbore or a slit.

  With such a configuration, when the deflection 52 is formed in a part of the optical fiber 50, the concave portion 162 allows the deflection 52 to be formed on the lower side. 52 can be formed.

[Second Reference Example]
The optical connector attachment assisting tool 170 according to the second reference example of the present invention shown in FIG. 18 has the following configuration change with respect to the optical connector mounting assisting tool 10 according to the first embodiment of the present invention described above. Has been.

  That is, the width of the fiber guide surface 17A is ensured wider than that of the first embodiment of the present invention described above, and when the deflection 52 is formed in the optical fiber 50, it is allowed to form the deflection 52 in the lateral direction. It has become so.

  Even in such a configuration, the deflection 52 having a desired size can be formed.

10, 20 Optical connector mounting aid 12 Optical connector set part 14 Fiber guide part 16 Slide support part 16A Slide support surface 17 Guide wall 17A Fiber guide surface 17B Arc part 18 Convex part 30 Optical connector 39 Built-in optical fiber 43 Groove 50 Light Fiber 50A Front end portion 50C of optical connector 60C Optical connector 64 Cable fixing member 68 Storage member (fixing support portion)
70 Ferrule 72 Fiber fixing portion 74 Built-in optical fiber 82 Groove 90 Extension support portion 92 Protrusion portion 100 Guide hole 120 Optical fiber cable 122 Optical fiber core wire 122A Optical fiber core wire protrusion portion 124 Optical fiber cable sheath portion 130 Optical connector 132 movable piece 134 convex portion 136 contact portion 140 optical connector 141 extension support portion 142 movable piece 144 convex portion 150 optical connector

Claims (6)

An optical connector set for setting an optical connector into which the tip of the optical fiber is inserted; and
The optical fiber is set in the axial direction of the optical connector set in the optical connector set portion, and is inserted along with the optical connector set portion, and the tip of the optical fiber is inserted into the optical connector set in the optical connector set portion. When the deflection of the optical fiber is formed on its front side,
A fiber temporary fixing portion that is provided side by side with the deflection forming portion on the side opposite to the optical connector set portion with respect to the deflection forming portion, and that holds the rear end side from the tip portion of the optical fiber,
A convex portion that is formed on the deflection forming portion and that protrudes to the front side of the deflection forming portion so as to block an axis that is coaxial with the optical fiber insertion groove in the optical connector,
A mounting aid for optical connectors. An optical connector set for setting an optical connector into which the tip of the optical fiber is inserted; and
The optical fiber is set in the axial direction of the optical connector set in the optical connector set portion, and is inserted along with the optical connector set portion, and the tip of the optical fiber is inserted into the optical connector set in the optical connector set portion. When the deflection of the optical fiber is formed on its front side,
A fiber temporary fixing portion that is provided side by side with the deflection forming portion on the side opposite to the optical connector set portion with respect to the deflection forming portion, and that holds the rear end side from the tip portion of the optical fiber,
With
The optical connector set portion and the fiber temporary fixing portion are held by a central axis of a tip portion of the optical fiber inserted into the optical connector set in the optical connector set portion and the fiber temporary fixing portion. The center axis on the rear end side with respect to the front end portion of the optical fiber is formed so as to form an angle that is convex on the front side of the deflection forming portion,
Mounting aid for optical connectors. The length of the deflection forming portion along the axial direction is 20 mm or more.
The optical connector mounting aid according to claim 1 or 2. The length along the axial direction of the deflection forming portion is 25 mm or more and 35 mm or less,
The mounting aid for optical connectors according to claim 3. The deflection forming portion is provided with a fiber guide surface for guiding the optical fiber,
The attachment auxiliary tool for optical connectors as described in any one of Claims 1-4. An assembly method of an optical connector for fixing the optical connector to the tip of the optical fiber using the optical connector mounting aid according to claim 5,
Setting the optical connector in the optical connector set part;
While guiding the tip of the optical fiber by the deflection forming portion, sliding the optical fiber toward the optical connector set portion and inserting the tip of the optical fiber into the optical connector;
On the front side of the deflection forming portion, the rear end side of the optical fiber is supported by the fiber temporary fixing portion, and the rear end of the built-in optical fiber of the optical connector is abutted with the front end of the optical fiber. Sliding the rear end side of the optical fiber from the front end portion of the optical fiber so that the optical fiber is inserted into the optical connector until the deflection is formed in the optical fiber; and
Fixing the optical connector to the tip of the optical fiber in a state where a deflection is formed in the optical fiber;
For assembling an optical connector.

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