JP2018163303A - Tool for optical fiber connection and optical connector with tool for optical fiber connection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool for optical fiber connection with which a work to release holding of an optical connector and remove an insertion member from between elements of a clamp part can be performed in a series of operations.SOLUTION: A tool 1 for optical fiber connection enables, in an optical connector 100 comprising a ferrule 131 having an optical fiber interpolated and fixed thereto and a clamp part fixing the connection between the optical fiber and another optical fiber, insertion/removal of the another optical fiber into/from the optical connector by opening/closing a gap in the clamp part. The tool for optical fiber connection comprises: an insertion part 10 that has an insertion piece inserted into the gap of the clamp part; and an arm 20 that has a locking part 21B at its tip and holds the optical connector. The arm is formed with a slide surface 21A that slides the optical connector in which locking performed by the locking part is released, and a contact surface 22A that is pressed against the insertion part to remove the insertion piece from the clamp part toward the opposite side of the slide direction of the optical connector.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an optical fiber connecting tool and an optical connector with an optical fiber connecting tool.

  In recent years, an on-site assembly type optical connector that can be easily assembled to the end of an optical cable at an optical fiber installation site has been proposed. In the field assembly type optical connector, the built-in optical fiber is inserted and fixed to the ferrule in advance at the factory, and the end of the built-in optical fiber is arranged between a pair of halves of the clamp part (mechanical splice part). ing. Then, at the optical fiber laying site where the assembly work is performed, the end of the insertion optical fiber led out from the optical cable is inserted between the elements, and clamped and fixed by the elasticity of the spring of the clamp portion, so that the optical fibers are pushed together. Thus, the connection between the optical fibers is fixed.

  In relation to such an on-site assembly type optical connector, Patent Document 1 discloses an optical fiber connection for inserting / removing a wedge (insertion member) between elements in order to open / close between the elements from the outside of the clamp portion. A tool is disclosed. Furthermore, in the optical fiber connecting tool of Patent Document 1, it is disclosed that an insertion member driving portion formed in a ring shape is provided in order to easily pull out the insertion member inserted between the elements of the clamp portion. Yes. By applying a lateral pressure to the insertion member drive unit from both sides, the protruding amount of the insertion member is reduced, and the insertion member is pulled out from between the elements of the clamp unit.

JP 2005-99706 A

  In the optical fiber connection tool described in Patent Document 1, the assembly work is performed in a state where the optical fiber connection tool is attached to the optical connector in the factory, that is, the insertion member is inserted between the elements of the clamp portion. It is transported to the optical fiber laying site. At this time, a separate holding member is required to hold the optical fiber connection tool so that it does not come off the optical connector while the optical connector to which the optical fiber connection tool is attached is transported. The increase in the cost for manufacturing such a holding member, and the increase in the effort which removes a holding member at the time of an assembly operation have been a problem.

  It is an object of the present invention to provide an optical fiber connecting tool that can release a holding of an optical connector and easily perform a series of operations for removing an insertion member from between elements of a clamp portion.

  Some embodiments of the present invention provide the clamp unit with respect to an optical connector including a ferrule in which an optical fiber is inserted and fixed, and a clamp unit that fixes a connection state between the optical fiber and another optical fiber. An optical fiber connecting tool that allows the other optical fiber to be inserted into and removed from the optical connector by opening and closing the gap, and the insertion having an insertion piece inserted into the gap of the clamp portion And an arm having a locking portion at the tip and holding the optical connector, the arm having a slide surface for sliding the optical connector unlocked by the locking portion, and the interposition A contact surface for removing the insertion piece from the clamp part is formed on the side opposite to the sliding direction of the optical connector by being pressed against the insertion part. With tools That.

  Other characteristics of the present invention will be made clear by the description and drawings described later.

  According to some embodiments of the present invention, the operation of releasing the holding of the optical connector and removing the insertion member from between the elements of the clamp portion can be easily performed by a series of operations.

FIG. 1 is an exploded perspective view of the optical connector 100. FIG. 2A is a perspective view of the optical fiber connecting tool 1. FIG. 2B is a perspective view of the optical fiber connection tool 1 attached to the optical connector 100. FIG. 3 is a flowchart showing a procedure for removing the optical fiber connection tool 1 from the optical connector 100. 4A to 4C are front views showing a procedure for removing the optical fiber connecting tool 1 from the optical connector 100. FIG. 5A to 5C are plan views showing a procedure for removing the optical fiber connecting tool 1 from the optical connector 100. FIG. FIG. 6 is a front view showing a state in which leakage light of the insertion optical fiber is emitted to the outside through the lens portion 12 of the optical fiber connection tool 1.

  At least the following matters will be apparent from the description and drawings described below.

  By opening and closing the gap of the clamp part with respect to an optical connector comprising a ferrule with an optical fiber inserted and fixed, and a clamp part for fixing a connection state between the optical fiber and another optical fiber, An optical fiber connection tool that enables an optical fiber to be inserted into and removed from the optical connector, and has an insertion part having an insertion piece inserted into the gap of the clamp part, and a locking part at the tip. And an arm for holding the optical connector, wherein the arm has a slide surface for sliding the optical connector released from the engagement by the engagement portion and the optical portion by pressing against the insertion portion. The optical fiber connecting tool is characterized in that an abutting surface for removing the insertion piece from the clamp portion is formed on the side opposite to the sliding direction of the connector. According to such an optical fiber connection tool, the operation of releasing the holding of the optical connector and removing the insertion member from between the elements of the clamp portion can be performed by a series of operations.

  The arms are preferably a pair of arms that hold the optical connector, and the pair of arms are preferably formed so as to be inclined toward the optical connector. Thereby, the force holding the optical connector by the arm can be increased.

  The slide surface is preferably formed by a curved surface. Thereby, since a corner | angular part is not formed in the slide surface which slides an optical connector, when an optical connector slides, it can suppress that an optical connector is caught in a corner | angular part.

  The insertion portion has a plurality of insertion pieces arranged in the optical axis direction of the other optical fiber, and a portion that presses the contact surface against the insertion portion is more than the plurality of insertion pieces. However, it is desirable that it is located on the end face side of the ferrule. Thereby, by removing from the insertion piece on the ferrule end face side first, it is fixed from the end portion of the insertion optical fiber, and the built-in optical fiber and the insertion optical fiber can be prevented from shifting in abutting state. it can.

  It is desirable that the locking portion is formed with a tapered surface inclined toward the end face side of the ferrule. Thereby, by removing from the insertion piece on the ferrule end face side first, it is fixed from the end portion of the insertion optical fiber, and the built-in optical fiber and the insertion optical fiber can be prevented from shifting in abutting state. it can.

  It is desirable to have a lens part that emits light from the other optical fiber through the insertion part. Thereby, the connection state of optical fibers can be confirmed visually.

  An optical connector having a ferrule with an optical fiber inserted and fixed, and a clamp portion for fixing a connection state between the optical fiber and another optical fiber, by opening and closing a gap between the clamp portions, An optical connector with an optical fiber connection tool to which an optical fiber connection tool that allows the optical fiber to be inserted into and extracted from the optical connector is attached, and has an insertion piece inserted into the gap of the clamp portion An insertion portion; and an arm having a locking portion at a tip and holding the optical connector, wherein the arm has a slide surface for sliding the optical connector unlocked by the locking portion; A contact surface for removing the insertion piece from the clamp portion is formed on the side opposite to the slide direction of the optical connector by being pressed against the insertion portion. The tool with optical connectors for fiber connections become apparent. According to such an optical connector with an optical fiber connecting tool, the operation of releasing the holding of the optical connector and removing the insertion member from between the elements of the clamp portion can be performed in a series of operations.

=== First Embodiment ===
<Basic structure of optical connector 100>
FIG. 1 is an exploded perspective view of the optical connector 100. In FIG. 1, in addition to the optical connector 100, an optical fiber connection tool 1 described later is also illustrated.

  In the following description, each direction is defined as shown in the figure. That is, the optical axis direction of the optical cable 200 or the optical fiber 210 is “front-rear direction”, the side where the optical cable 200 extends from the optical connector 100 is “rear”, and the opposite side (the end face side of the ferrule 131 of the optical connector 100) is “Before”. Also, the direction of attaching or removing the optical fiber connecting tool 1 to or from the optical connector 100 (coupling 110) is “up and down direction”, and the optical fiber connecting tool 1 side as viewed from the optical connector 100 is “up”. The opposite side is “down”. In addition, a direction perpendicular to the front-rear direction and the up-down direction is referred to as “left-right direction”, the right side when viewed from the front side is “right”, and the left side is “left”.

  The optical connector 100 is an on-site assembly type optical connector that connects the optical fiber 210 by the mechanical splice method, and is an optical connector that is assembled to the end of the optical cable 200. The optical connector 100 is, for example, an SC type optical connector (F04 type optical connector established in JIS C5973).

  An optical fiber 210 led from the optical cable 200 can be connected to the optical connector 100. In the present embodiment, the optical cable 200 that can be connected to the optical connector 100 is a square cable. However, the optical cable 200 may be a round cable. The optical cable 200 includes what is called an optical cord.

  The optical cable 200 is an optical cable having a rectangular cross section, for example, a drop cable or an indoor cable. The optical cable 200 is an optical cable in which an optical fiber 210 and a pair of linear strength members are collectively covered with a jacket. The pair of strength members are arranged so as to sandwich the optical fiber 210. The direction in which the pair of strength members sandwich the optical fiber 210 is the long-side direction of the cross section of the optical cable 200. On the surface constituting the long side of the cross section of the optical cable 200, a notch for inserting a blade of a jacket dividing tool is formed. The optical cable 200 is configured by collectively covering an optical fiber 210 and a tensile body with a jacket.

  The optical connector 100 includes a coupling 110, a plug frame 120, a ferrule 130 with a clamp, a spring 140, and a ferrule housing housing 150.

  The coupling 110 is a housing that houses the plug frame 120. The coupling 110 is formed with an engaged hole 112, and the plug frame 120 is fixed to the coupling 110 by the engagement piece 121 of the plug frame 120 engaging with the engaged hole 112.

  The plug frame 120 is a sleeve-shaped housing that houses a part of the ferrule 131 (ferrule 130 with a clamp).

  The clamped ferrule 130 is housed in the ferrule housing housing 150 so as to be retractable while being urged forward by the spring 140 relative to the ferrule housing housing 150. The ferrule 130 with a clamp includes a ferrule 131 and a clamp part 132 (mechanical splice part).

  Here, the ferrule 131 is a cylindrical ferrule used for a single-core optical connector. A front end portion of a built-in optical fiber (not shown, hereinafter sometimes referred to as “built-in optical fiber”) is inserted and fixed to the ferrule 131 and the end face thereof is polished together with the ferrule 131. The rear end portion of the built-in optical fiber is disposed in an alignment groove formed in a pair of elements 133 (see FIGS. 4A to 4C) of the clamp portion 132.

  The clamp part 132 aligns (aligns) the built-in optical fiber and the optical fiber 210 (hereinafter, also referred to as “inserted optical fiber”) from the optical cable 200 by a mechanical splice method, and also uses the built-in optical fiber. And an insertion optical fiber. In order to connect and fix the built-in optical fiber and the insertion optical fiber in the clamp portion 132, first, the tip of the insertion optical fiber where the bare optical fiber is exposed is first connected to the pair of elements from the rear end portion of the clamp portion 132. It inserts in the alignment groove | channel currently formed in the mating surface of 133. Then, the inserted optical fiber is clamped and fixed by the elasticity (clamping force) of the spring of the clamp portion 132 in a state where the covering portion is sandwiched between the pair of elements 133. In the following description, the built-in optical fiber may be simply referred to as “optical fiber”, and the insertion optical fiber may be referred to as “another optical fiber”.

  The spring 140 is a member for urging the ferrule 130 with a clamp accommodated so as to be retractable forward. When the optical connector 100 is inserted into an optical connector adapter or the like and connected to another optical connector, the spring 140 gives the ferrule 131 a butting force with the optical connector on the other side of the connection.

  The ferrule housing 150 is a housing that houses a part of the ferrule 130 with a clamp. The ferrule housing housing 150 includes a stop ring portion 151 and an optical cable holding portion 152. The stop ring portion 151 is a part having a function as a stop ring, and is in contact with the rear end of the spring 140. The optical cable holding part 152 is a part for fixing a jacket holding member that is a member capable of holding the optical cable 200, and is a part provided on the rear side of the ferrule housing housing 150.

<Basic structure of optical fiber connecting tool 1>
FIG. 2A is a perspective view of the optical fiber connecting tool 1. FIG. 2B is a perspective view of the optical fiber connection tool 1 attached to the optical connector 100. In order to facilitate the following description, FIGS. 2A and 2B are illustrated with the vertical direction reversed.

  The optical fiber connection tool 1 is a tool for opening and closing a pair of elements of a clamp portion of an optical connector. The optical fiber connection tool 1 is also a tool for holding the optical connector while the pair of elements of the clamp portion of the optical connector is opened. In the following description, opening and closing between the pair of elements of the clamp part of the optical connector may be simply referred to as “opening and closing the gap of the clamp part”. Further, an optical connector to which an optical fiber connecting tool as shown in FIG. 2B is attached may be referred to as an “optical connector with an optical fiber connecting tool”.

  In the optical connector with an optical fiber connection tool according to the present embodiment, an insertion portion 10 (insertion piece 11) of the optical fiber connection tool 1 described later has an insertion hole from the outside of the optical connector 100 (coupling 110). Through the pair of elements 133 of the clamp part 132. In other words, the space between the pair of elements 133 is slightly pushed open against the elasticity of the spring of the clamp part 132. Thereby, as described above, the insertion optical fiber can be inserted from the rear end portion of the clamp portion 132 into the alignment groove formed on the mating surface of the pair of elements 133.

  The optical fiber connecting tool 1 according to the present embodiment is integrally formed of synthetic resin, but is not limited thereto, and may be formed of a plurality of parts.

  The optical fiber connection tool 1 includes an insertion part 10, an arm 20, and an insertion part 30.

  The insertion part 10 is a member that opens and closes the gap between the clamp parts 132 of the optical connector 100. The insertion portion 10 extends in the front direction from the rear end portion of the optical fiber connecting tool 1. The insertion portion 10 is connected to an arm 20 (described later) and the insertion portion 30 at the rear end portion of the optical fiber connection tool 1. The insertion part 10 includes an insertion piece 11 (a front insertion piece 11A and a rear insertion piece 11B), a lens part 12, and a movable end part 13.

  The insertion piece 11 is a wedge-shaped part that opens and closes the gap between the clamp portions 132 of the optical connector 100. An insertion hole (see FIG. 1) is formed in the upper surface of the optical connector 100 (coupling 110, plug frame 120, and ferrule housing housing 150). The insertion hole extends downward from the insertion portion 10. The inserted insertion piece 11 is inserted.

  Although the insertion piece 11 of the insertion part 10 in this embodiment is a plate-shaped protrusion, it is not limited to this, For example, what has become a pin shape etc. as a whole is employable. The tip shape of the insertion piece 11 may be a shape having a curved surface (for the purpose of making the element difficult to damage) as illustrated in FIG. 2A. Various shapes such as a shape in which an inclined surface is symmetrically formed on both sides from the tip, and a shape in which an inclined surface is formed only on one side from the tip can be adopted.

  Moreover, the insertion part 10 in this embodiment has the two insertion pieces 11A and the insertion pieces 11B arranged in the front-back direction. However, the insertion part 10 may have only one insertion piece. For example, a single plate-like insertion piece or the like in which the portion (tip) inserted into the gap of the clamp part 132 of the optical connector 100 extends along the alignment axis line by the alignment groove may be adopted. it can.

  The lens unit 12 is a lens-shaped part provided on the upper surface of the insertion unit 10. Details of the lens unit 12 will be described later.

  The movable end portion 13 is a substantially triangular prism-shaped portion provided at the front end portion of the insertion portion 10. The movable end 13 is provided so as to connect the insertion piece 11 to the rear side, so that the insertion piece 11 is also moved along with the movement of the movable end 13 described later. Details of the movable end 13 will be described later.

  The arm 20 is a member that holds the optical connector 100 (coupling 110) so that the optical fiber connecting tool 1 is not detached from the optical connector 100 during transportation, for example. The arm 20 is also a member for removing the insertion piece 11 from the clamp portion 132 when the optical fiber connection tool 1 is removed from the optical connector 100. The arm 20 is a pair of wall-shaped members provided on the left and right sides of the optical connector 100. The pair of members constituting the arm 20 respectively extend in the front direction from the rear end portion of the optical fiber connecting tool 1. And a pair of member which comprises the arm 20 is connected to the insertion part 10 and the insertion part 30 mentioned later in the rear side edge part of the tool 1 for optical fiber connection, respectively.

  The arm 20 includes a holding unit 21 and a driving unit 22.

  The holding unit 21 is a part that holds the optical connector 100. A pair of holding portions 21 are provided on both the left and right sides of the optical connector 100 and are connected to the driving portion 22 at the upper end. A pair of holding | maintenance part 21 in this embodiment is formed so that it may incline inside (the optical connector 100 side). Thereby, when the arm 20 holds the optical connector 100, the optical connector 100 is held against the inner side (optical connector 100 side) pressing force of the arm 20, so the optical connector 100 is held by the arm 20. Can increase the force to do.

  A surface on the inner side (on the optical connector 100 side) of the holding portion 21 is a slide surface 21A when the optical connector 100 described later is removed. Further, a locking portion 21B is formed at the lower end of the holding portion 21. Furthermore, a locking portion taper surface 21 </ b> C is formed at the front end of the locking portion 21 so as to spread in the front direction. Details of the slide surface 21A, the locking portion 21B, and the locking portion taper surface 21C will be described later.

  The drive unit 22 is a member for removing the insertion piece 11 from the clamp unit 132 when the optical fiber connection tool 1 is removed from the optical connector 100. A pair of drive units 22 is provided on both the left and right sides of the optical connector 100, and is connected to the holding unit 21 at the lower end. A contact surface 22A is formed on the inner surface (on the optical connector 100 side) of the drive unit 22. The contact surface 22A is a surface that contacts the movable end portion 13 of the insertion portion 10 when the insertion piece 11 is removed from the clamp portion 132 (see FIG. 4B). Further, a handle 22B is formed on the outer side of the drive unit 22 (on the side opposite to the optical connector 100). The handle portion 22 </ b> B is a part for an operator to operate the arm 20. Details of the contact surface 22A and the handle 22B will be described later.

  The insertion part 30 is a member into which the convex part 111 formed on the outer side of the optical connector 100 (coupling 110) is inserted when the optical fiber connection tool 1 is attached to the optical connector 100. The convex portion 111 is formed so as to extend in the vertical direction outside the coupling 110, and the insertion portion 30 is formed so as to be fitted to the convex portion 111. That is, the insertion part 30 is a concave member formed so that the convex part 111 can slide up and down. Thereby, since the moving direction at the time of attachment of the optical fiber connecting tool 1 can be restricted in the vertical direction, the insertion piece 11 can be easily inserted straight in the vertical direction with respect to the gap of the clamp portion 132. Become. In addition, the convex part 111 is a site | part which has an anti-slip | skid function, for example, when an operator carries out the assembly work with the optical connector 100 in his / her hand.

<Procedure for Removing Optical Fiber Connection Tool 1 from Optical Connector 100>
FIG. 3 is a flowchart showing a procedure for removing the optical fiber connection tool 1 from the optical connector 100. As illustrated in FIG. 1B described above, in a state where the optical fiber connection tool 1 is attached to the optical connector 100, the insertion portion 10 (insertion piece 11) is connected to the pair of elements 133 of the clamp portion 132. It is interrupted in between. For this reason, the insertion optical fiber can be inserted between the pair of elements 133 from the rear end of the clamp part 132. When the matching between the built-in optical fiber and the insertion optical fiber is completed, the optical fiber connection tool 1 is removed from the optical connector 100, whereby the insertion part 10 (insertion piece 11) is paired with the pair of elements 133 of the clamp part 132. Extracted from between. Thereby, the elasticity (clamping force) of the spring of the clamp part 132 is given again, and the inserted optical fiber is clamped and fixed while being sandwiched between the pair of elements 133. Therefore, in the following description, a procedure for removing the optical fiber connecting tool 1 from the optical connector 100 will be described.

  As shown in FIG. 3, in order to remove the optical fiber connection tool 1 from the optical connector 100, first, an operator holds the optical connector 100 (coupling 110) by the optical fiber connection tool 1 (arm 20). Is released (S101). In the optical connector with the optical fiber connecting tool according to the present embodiment, the optical connector 100 is held while being vertically locked by the locking portion 21B, and therefore the insertion portion 10 (insertion piece 11) is clamped. It is prevented from being pulled upward from between the portions 132 (see FIG. 4A). For this reason, first, by releasing the locking of the optical connector 100 by the locking portion 21 </ b> B, the insertion portion 10 (insertion piece 11) can be removed from between the clamp portions 132 in the upward direction.

  Subsequently, the insertion piece 11 is removed from the clamp part 132 (S102). The operation of removing the insertion piece 11 from the clamp part 132 will be described later.

  4A to 4C are front views showing a procedure for removing the optical fiber connecting tool 1 from the optical connector 100. FIG.

  When removing the optical fiber connecting tool 1 from the optical connector 100, the operator first presses the handle 22B of the drive unit 22 inward (on the optical connector 100 side). As a result, the arm 20 rotates in the direction of the arrow in the figure with the portion (C1) in contact with the optical connector 100 (coupling 110) as a fulcrum (see FIGS. 4A to 4B).

  As the arm 20 rotates, the pair of arms 20 are deformed so as to open downward (see FIG. 4B). Thereby, the latching | locking part 21B is cancelled | released from the coupling 110 (refer FIG. 4B). The optical connector 100 released from the locking by the locking portion 21B can move downward. The optical connector 100 moves downward while sliding on the slide surface 21A while maintaining contact with the arm 20.

  The slide surface 21A is formed with a curved surface. Thereby, since a corner | angular part is not formed in 21 A of slide surfaces which slide the optical connector 100, when the optical connector 100 slides, it can suppress that the optical connector 100 is caught in a corner | angular part.

  As a result of the arm 20 rotating and the optical connector 100 moving downward, the contact surface 22A of the drive unit 22 at the top of the arm 20 can move to the movable end 13 side of the insertion unit 10. become. And it contacts in the location (C2) with the movable end part 13 (refer FIG. 4B).

  The operator continues to press the handle 22B of the drive unit 22 inward (on the optical connector 100 side), so that the contact surface 22A further presses the movable end 13 inward. Here, the pair of contact surfaces 22A have inclined surfaces that open upward. On the other hand, the movable end portion has a shape that becomes wider as it goes upward. Accordingly, when the contact surface 22A pushes the movable end 13 inward, the movable end 13 is pushed upward. Then, the insertion piece 11 connected to the movable end portion 13 is pulled out from between the pair of elements 133 by moving upward as the movable end portion 13 moves upward (see FIG. 4C).

  The above procedure can be completed only by an operation in which the operator presses the handle portion 22B of the drive unit 22 inward (on the optical connector 100 side). That is, the operator releases the holding of the optical connector 100 (coupling 110) by the optical fiber connection tool 1 (arm 20) by pressing the handle 22B of the drive unit 22 inward (on the optical connector 100 side). That is, the insertion piece 11 can be removed from the clamp portion 132 in a series. Thereby, the operation of releasing the holding of the optical connector 100 and removing the insertion part 10 from between the elements 133 of the clamp part 132 can be easily performed by a series of operations.

  5A to 5C are plan views showing a procedure for removing the optical fiber connecting tool 1 from the optical connector 100. FIG. 5A to 5C are views showing the same procedure as that of FIGS. 4A to 4C described above from the upper side. The portion where the operator presses the handle portion 22B inward (on the optical connector 100 side) is located on the foremost side in the optical fiber connection tool 1. Therefore, the part which presses 22 A of contact surfaces to the movable end part 13 is located in the front side rather than the insertion pieces 11A and 11B. For this reason, by pressing the contact surface 22 </ b> A against the movable end portion 13, first, the insertion piece 11 </ b> A is extracted first, and then the insertion piece 11 </ b> B is extracted. As a result, the connection is fixed from the end of the insertion optical fiber, that is, the side close to the butting point between the optical fibers, and the deviation of the butting state between the built-in optical fiber and the inserting optical fiber can be suppressed.

  The locking portion 21B is formed with a locking portion tapered surface 21C. Accordingly, as shown in FIG. 5B, the front end portion of the arm 20 can be easily moved inward by pressing the handle portion 22B inward (on the optical connector 100 side).

  FIG. 6 is a front view showing a state in which leakage light of the insertion optical fiber is emitted to the outside through the lens portion 12 of the optical fiber connection tool 1. The lens part 12 is integrally molded by the insertion part 10 and a transparent member. Therefore, as shown in FIG. 6, the lens unit 12 can expand the light that has leaked from the unconnected insertion optical fiber and has traveled through the insertion unit 10. When optical fibers are connected and fixed, light does not leak to the outside. For this reason, if the optical fibers are not connected, light is emitted, and if the optical fibers are connected, light is not emitted. For this reason, the connection state of optical fibers can be confirmed visually.

=== Other Embodiments ===
The above-described embodiments are for facilitating understanding of the present invention, and are not intended to limit the present invention. The present invention can be modified and improved without departing from the gist thereof, and it goes without saying that the present invention includes equivalents thereof.

1 Optical fiber connection tool,
10 insertion part,
11 insertion piece, 11A front insertion piece, 11B rear insertion piece,
12 lens part, 13 movable end part 20 arm,
21 holding part, 21A slide surface, 21B locking part, 21C locking part taper surface,
22 drive part, 22A contact surface, 22B handle part,
30 plug,
100 optical connector,
110 coupling, 111 convex part, 112 engaged hole 120 plug frame, 121 engaging piece 130 ferrule with clamp, 131 ferrule,
132 Clamp part, 133 Element 140 Spring,
150 ferrule housing,
151 Stop ring part, 152 Optical cable holding part,
200 optical cable, 210 optical fiber

Claims (7)

For an optical connector comprising a ferrule in which an optical fiber is inserted and fixed, and a clamp part for fixing a connection state between the optical fiber and another optical fiber,
An optical fiber connecting tool that allows the other optical fiber to be inserted into and removed from the optical connector by opening and closing the gap of the clamp part,
An insertion part having an insertion piece inserted into the gap of the clamp part;
An arm having a locking portion at the tip and holding the optical connector;
A slide surface for sliding the optical connector unlocked by the locking portion;
An optical fiber, wherein a contact surface for removing the insertion piece from the clamp part is formed on the side opposite to the sliding direction of the optical connector by being pressed against the insertion part. Connecting tool. The optical fiber connecting tool according to claim 1,
The arms are a pair of arms that hold the optical connector;
The pair of arms are formed so as to incline toward the optical connector, respectively. An optical fiber connection tool. The optical fiber connecting tool according to claim 1 or 2,
The slide surface is formed of a curved surface. An optical fiber connecting tool. The optical fiber connecting tool according to any one of claims 1 to 3,
The insertion part has a plurality of insertion pieces arranged in the optical axis direction of the another optical fiber,
The part for pressing the contact surface against the insertion part is located closer to the end face side of the ferrule than the plurality of insertion pieces. The optical fiber connecting tool according to claim 4,
The locking part is formed with a tapered surface inclined toward the end face side of the ferrule. An optical fiber connection tool. The optical fiber connecting tool according to any one of claims 1 to 4,
An optical fiber connecting tool, comprising: a lens portion that emits light from the another optical fiber through the insertion portion. For an optical connector having a ferrule in which an optical fiber is inserted and fixed, and a clamp portion for fixing a connection state between the optical fiber and another optical fiber,
An optical connector with an optical fiber connection tool attached with an optical fiber connection tool that allows the optical fiber connector to be inserted into and removed from the optical connector by opening and closing the gap of the clamp part,
An insertion part having an insertion piece inserted into the gap of the clamp part;
An arm having a locking portion at the tip and holding the optical connector;
A slide surface for sliding the optical connector unlocked by the locking portion;
An optical fiber, wherein a contact surface for removing the insertion piece from the clamp part is formed on the side opposite to the sliding direction of the optical connector by being pressed against the insertion part. Optical connector with connection tool.

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