TW201706653A - Cable jacket holding member, optical fiber connection unit, optical fiber connection unit kit, and removal tool of jacket holding member - Google Patents

Abstract

The present invention provides a cable jacket holding member including a bottom wall portion and a pair of side wall portions which is vertically provided to stand on the bottom wall portion with a space therebetween. A groove portion between the pair of the side wall portions includes a first cable groove which is formed in one edge of the groove portion and into which a first optical fiber cable is fitted, and a second cable groove which is formed in the other edge of the groove portion and into which a second optical fiber cable having a cross-sectional area smaller than that of the first fiber cable is fitted, wherein the width of the second cable groove is less than that of the first cable groove.

Description

Cable jacket holding member, fiber connecting unit, fiber connecting unit set, and jacket holding Component removal tool Field of invention

The present invention relates to a cable jacket holding member that can be used for pulling and fixing a fiber optic cable, and an optical fiber connecting unit including the same.

The present application claims priority based on Japanese Patent Application No. 2015-082347 and No. 2015-082348, filed on Apr.

Background of the invention

As the optical fiber cable, there is an optical fiber embedded cable (for example, a drop cable or the like) having a structure in which an optical fiber and an anti-tension body are embedded in a rectangular outer casing of a synthetic resin.

In the optical fiber embedded cable, a fiber connecting unit (optical joint) having a structure in which a jacket holding member (a fixing member for pulling and fixing) that has been fixed to the end of the cable is fixed is used (for example, refer to the patent) Document 1).

Further, in the fiber-embedded cable, there are a plurality of types in which the cross-sectional dimensions are different. In the case where a jacket holding member is used for a plurality of types of optical fiber embedded cables, a dedicated outer casing holding member is often prepared for each cable cross-sectional dimension from the viewpoint of ensuring an appropriate cable pulling fixing force.

Prior technical literature Patent literature

Patent Document 1: International Publication No. 2013/129485

Summary of invention

However, the preparation of a dedicated outer casing holding member for each cable cross-sectional size is a cause of increased management effort and high cost.

The present invention has been made in view of the above circumstances, and provides a cable jacket holding member and an optical fiber connecting unit which can easily ensure a high pulling fixing force for each of a plurality of optical fiber cables having different cross-sectional dimensions from each other, and Can suppress costs.

According to a first aspect of the invention, there is provided a cable jacket holding member having a bottom wall portion and a pair of side wall portions erected at intervals with respect to the bottom wall portion, and between the pair of side wall portions The groove portion has a first cable groove formed at one end portion thereof to embed the first optical fiber cable, and a second cable groove formed in the other end portion of the groove portion to be embedded in the second optical fiber cable having a smaller cross-sectional dimension than the first optical fiber cable And the width of the aforementioned second cable trench It is smaller than the first cable trench.

According to a second aspect of the present invention, in the cable jacket holding member according to the first aspect, the first recessed portion recessed from a bottom surface of the first cable groove may be formed in the bottom wall portion, and a second recess recessed from the bottom surface of the second cable groove.

According to a third aspect of the present invention, in the cable jacket holding member of the second aspect, the inner surface of the first recess and the second recess may be along with the first cable trench and The bottom surface of the second cable groove faces the depth direction of the first recess and the second recess, and the inclined inner surface is inclined toward the inner side in the width direction of the first recess and the second recess.

A fourth aspect of the present invention is a fiber connecting unit comprising: a connecting unit body having an optical fiber connector; and a pulling fixing portion for pulling the end of the fixed optical fiber cable, wherein the optical fiber connector inserts the optical fiber from one side An optical fiber of the connector, and an interposing optical fiber that is pulled out from the end of the optical fiber cable and inserted from the other side of the optical fiber connector, and the pull fixing portion has any one of the first to third aspects The cable jacket holding member and the casing for fixing the cable jacket holding member.

In a fifth aspect of the present invention, in the optical fiber connecting unit of the fourth aspect, the connecting unit body has a ferrule, and the optical fiber is internally inserted and fixed in the ferrule Tibetan fiber.

According to a sixth aspect of the present invention, in the optical fiber connecting unit according to the fourth or fifth aspect, the housing for fixing the pull fastener has a pair of side plate portions, and the pair of side plate portions are disposed in the storage unit. The electric power of the housing for the pull fixing The outer side of the pair of side wall portions of the cable jacket holding member is arranged outward to restrict the outward displacement of the pair of side wall portions.

A seventh aspect of the invention is a fiber connecting unit kit, comprising: a jacket holding member removing tool, and the above-mentioned optical fiber connecting unit, wherein the outer covering member removing tool can receive a sheath holding member that is fixed at an end of the optical fiber cable The outer casing holding member is detached from the outer casing for pulling and fixing, and the pulling and fixing portion has the outer casing holding member and the outer casing for pulling and fixing.

An eighth aspect of the present invention is an outer casing holding member detaching tool for detaching the outer casing holding member from a casing for holding and fixing a jacket holding member that is fixed to an end of the optical fiber cable, and the outer casing for pulling the fixing a side plate portion located on a side surface of the outer surface of the outer casing holding member, and a latch having a locking portion of a locking receiving portion that can be locked to a side surface of the outer surface of the outer casing holding member is formed on the side plate portion. The outer casing holding member removing tool has a base portion and a releasing operation portion extending from the base portion, and the releasing operation portion is inserted between the outer casing holding member and the latch by being inserted into the outer casing for pulling and fixing The latch is displaced outward, thereby releasing the locking of the locking receiving portion by the locking portion.

According to a ninth aspect of the present invention, in the outer gripping member removing tool of the eighth aspect, the pressing portion may be formed at an end portion of the releasing operation portion, and the pressing portion may be provided by The insertion of the release operation portion into the housing for drawing and fixing is performed to push the latch outward, so that the latch is displaced outward.

In a tenth aspect of the present invention, the outer gripping member removing tool of the eighth or ninth aspect of the present invention may further include an engaging convex portion protruding from the base portion, and the engaging convex portion. By engaging the outer casing holding member, the outer casing holding member can be pressed from the pulling and fixing outer casing toward the detaching direction.

In the eleventh aspect of the present invention, in the outer gripping member removing tool of the tenth aspect, the protruding size of the engaging convex portion may be smaller than a protruding size of the releasing operation portion.

According to the aspect of the invention, the first cable groove is formed in the end portion of the groove portion to embed the first optical fiber cable, and the second cable groove is formed in the other end portion of the groove portion to embed the second optical fiber cable. Therefore, the width dimension of the first and second optical fiber cables can be matched to each of the cable grooves. In this way, the high cable pulling fixing force can be easily ensured for each of the first and second optical fiber cables.

Since it is possible to correspond to two types of optical fiber cables, the cost can be kept low as compared with the case of preparing a dedicated outer cover holding member for each cable sectional size.

1‧‧‧Disassembly tool

10‧‧‧Connector body (connecting unit body)

11‧‧‧ body shell

100,200‧‧‧ optical connectors (fiber connection units)

110, 210‧‧‧ fiber connection unit

20, 120‧‧‧ jacket holding member (cable jacket holding member)

2‧‧‧Base Department

2a, 43c1‧‧‧ lower surface

2b, 43c1‧‧‧ upper surface

20A‧‧‧Central Area

21‧‧‧ bottom wall

21A‧‧‧1st bottom wall

21B‧‧‧2nd bottom wall

21a, 43b1‧‧‧ inner surface

21b‧‧‧1st groove bottom surface (bottom surface)

21c‧‧‧2nd groove bottom surface (bottom surface)

21d‧‧‧1st slit (1st recess)

21e‧‧‧2nd slit (2nd recess)

21f‧‧‧1st inclined inner surface

21g‧‧‧2nd inclined inner surface

21h‧‧‧One end of the bottom wall

21i‧‧‧The other end of the bottom wall

22, 23‧‧‧ side wall

22a, 23a‧‧‧ inner surface (1st inner side)

22b, 23b‧‧‧ inner surface (2nd inner side)

24‧‧‧Ditch Department

240, 40‧‧‧ Pulling fixed parts

241, 41‧‧‧ Pulling the fixing shell

24A‧‧‧1st cable trench

24B‧‧‧2nd cable trench

25‧‧‧1st gripper

25a, 26a‧‧‧ main

25b, 26b‧‧‧ ridgeline

25c, 26c‧‧‧ tapered upper end

26‧‧‧2nd grip claw

27A, 27B‧‧‧ the innermost surface

28‧‧‧Card recess

28a‧‧‧one edge

28b‧‧‧The other edge

28c, 31b, 32b‧‧‧ side bottom

29‧‧‧Location indication

3‧‧‧Removal of Operations

3a‧‧‧ front face

3b‧‧‧Outside

3c, 50a‧‧‧ front surface

30‧‧‧Fiber containment ditch

30a‧‧‧Importing Department

30b‧‧‧Main Ditch

31‧‧‧1st snap recess

31a, 32a‧‧‧ edge

32‧‧‧2nd recess

33‧‧‧ Space

4‧‧‧Clamping convex

4a‧‧‧ trailing edge

42‧‧‧stop ring

42a‧‧‧Fiber lead-in hole

43‧‧‧ Holding Member Acceptance Department

43a‧‧‧Bottom plate

43b‧‧‧Side plate department

43c‧‧‧ top board

43d‧‧‧Conical recess

44‧‧‧Internal space

45‧‧‧Inlet

46‧‧‧Pushing Department

47‧‧‧ openings

47a‧‧‧Leading edge

48‧‧‧Latch

49‧‧‧Latch body

5‧‧‧Slip-proof

5a‧‧‧ditch

5b‧‧‧

50‧‧‧Clamping claws

50b‧‧‧Back surface

50b1‧‧‧ upper edge

51‧‧‧Insert slit

52‧‧‧Confirmation slit

6‧‧‧ Pushing surface

6a‧‧‧Outer sloped surface

6b‧‧‧ front side inclined surface

6c‧‧‧ pushing the edge

60‧‧‧With clip-on sleeve

61‧‧‧ Sockets

62‧‧‧ Built-in fiber

63‧‧‧Clamp (fiber connector)

7‧‧‧Confirmation window

70‧‧‧Fiber optic cable

71‧‧‧1st fiber optic cable

72‧‧‧2nd fiber optic cable

73‧‧‧ fiber (inserted fiber)

73a‧‧‧Bare fiber

73b‧‧‧Resin coated

74‧‧‧Anti-tension body

75‧‧‧ coat

76‧‧‧With the end of the gripping member cable

77A, 77B‧‧‧Flexing Department

80‧‧‧Connected unit body

82‧‧‧Fiber

83‧‧‧Mechanical adapter (fiber optic connector)

W1, W2‧‧‧ trench width

P‧‧‧Connecting Department

S1‧‧‧ imaginary vertical plane

X, Y, Z‧‧ Direction

Fig. 1A is a side view showing an optical joint according to a first embodiment of the outer sheath holding member of the present invention.

Figure 1B is an exploded perspective view of the optical connector of Figure 1A.

2A is a perspective view of the outer casing holding member of the optical connector of FIG. 1A.

Figure 2B is a view of the outer sleeve of Figure 2A from the one end side (the side of the first cable groove) Hold the diagram of the component.

Fig. 2C is a view of the outer grip member of Fig. 2A as seen from the other end side (the side of the second cable groove).

Fig. 3A is a plan view showing the optical connector in which the first optical fiber cable has been introduced into the first cable groove of the outer casing holding member.

Figure 3B is a side cross-sectional view of the optical connector of Figure 3A.

4A is a horizontal cross-sectional view of the optical connector of FIG. 1A, and is a cross-sectional view taken along line A1-A1 of FIG. 3B.

4B is a rear elevational view of the optical connector of FIG. 1.

Fig. 5A is a plan view showing the optical connector for introducing the second optical fiber cable to the second cable groove of the outer casing holding member.

Figure 5B is a side cross-sectional view of the optical connector of Figure 5A.

Fig. 6 is a perspective view showing another example of the outer casing holding member.

Fig. 7A is a cross-sectional view showing an example of a first optical fiber cable applicable to the optical connector of Fig. 1A.

Fig. 7B is a cross-sectional view showing an example of a second optical fiber cable applicable to the optical connector of Fig. 1A.

Figure 8 is a side elevational view of another fiber optic connection unit using the outer sheath holding member of the present invention.

Fig. 9A is a side view showing an embodiment of the outer sleeve holding member removal tool of the present invention and an optical joint to which the removal tool can be applied.

Figure 9B is an exploded perspective view of the disassembly tool and optical connector of Figure 9A.

Figure 10 is a perspective view of the outer gripping member removal tool of Figure 9A.

Figure 11 is a perspective view of the outer casing holding member of the optical connector of Figure 9A.

Figure 12 is a side elevational view of the outer gripping member removal tool and the outer casing holding member of Figure 9A.

Figure 13A is a horizontal cross-sectional view of the optical connector of Figure 9A.

Figure 13B is a side cross-sectional view of the optical connector of Figure 13A.

Figure 14A is a horizontal cross-sectional view of the optical connector of Figure 9.

Figure 14B is a side cross-sectional view of the optical connector of Figure 14A.

Figure 15A is a horizontal cross-sectional view of the optical connector of Figure 9A.

Figure 15B is a side cross-sectional view of the optical connector of Figure 15A.

Fig. 16 is a plan view showing another example of the outer casing holding member to which the outer grip member removing tool of Fig. 9A can be applied.

Figure 17 is a plan view showing an example of a fiber connecting unit to which the outer gripping member removal tool of Figure 9A can be applied.

Form for implementing the invention

Hereinafter, an embodiment of a cable jacket holding member (hereinafter also simply referred to as a jacket holding member), a detaching tool, and an optical joint according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)

Fig. 1A is a side view of an optical connector 100 (optical fiber connecting unit) having a sheath holding member 20 according to a first embodiment of the present invention. FIG. 1B is an exploded perspective view of the optical connector 100.

As shown in FIGS. 1A and 1B, the optical connector 100 includes a joint main body 10 (connection unit main body) and a pull fixing portion 40 that pulls and fixes the end of the optical fiber cable 70 in the rear portion of the joint main body 10. The optical connector 100 is, for example, a field assembly type Optical connector.

The joint main body 10 includes a main body casing 11 and a clip portion ferrule 60 housed in the main body casing 11.

The clip portion ferrule 60 has a ferrule 61 to which the fixed optical fiber 62 (the built-in optical fiber 62) is inserted, and a nip portion 63 (optical fiber connector). The built-in optical fiber 62 protrudes rearward from the ferrule 61.

In the joint main body 10, an optical fiber 73 (inserted optical fiber) that is pulled out from the end of the optical fiber cable 70 is inserted, and is connected to the built-in optical fiber 62 in the nip portion 63. Symbol P is a connection portion between the optical fiber 73 and the built-in optical fiber 62.

Hereinafter, the front end direction (the left side in FIG. 1A) of the ferrule 61 of the clip portion ferrule 60 is referred to as the front side, and the opposite direction is referred to as the rear side.

The pull fixing portion 40 has an outer casing holding member 20 that grips and fixes the end of the optical fiber cable 70, and a pulling and fixing outer casing 41 that houses the outer casing holding member 20.

The pull-out fixing case 41 has a stopper ring portion 42 that is inserted into the joint body 10 and a rectangular tubular grip member receiving portion 43 that extends rearward from the stopper ring portion 42.

The grip member receiving portion 43 has a tubular shape having a rectangular cross section, and includes an elongated plate-shaped bottom plate portion 43a extending in the front-rear direction, and one of the side edges of the bottom plate portion 43a facing the side plate portions 43b and 43b. The top plate portion 43c between the upper ends of the side plate portions 43b, 43b.

The grip member receiving portion 43 can house the outer jacket holding member 20 in the inner space 44 surrounded by the bottom plate portion 43a, the pair of side plate portions 43b and 43b, and the top plate portion 43c. The grip member receiving portion 43 can pass through the insertion opening 45 which is a rear end opening The outer casing holding member 20 is housed and taken out.

As shown in FIG. 1B and FIG. 4A, rectangular opening portions 47, 47 are formed in the pair of side plate portions 43b, 43b, respectively. At the front edges 47a, 47a of the openings 47, 47, latches 48, 48 extending rearward are formed. The latches 48 and 48 have elongated plate-shaped latch bodies 49 and 49 extending rearward from the front edges 47a and 47a of the opening portions 47 and 47, and locking portions provided at the front end portions of the latch bodies 49 and 49 in the extending direction. Claws 50, 50.

The side plate portions 43b and 43b are disposed on the outer side surface side of the side wall portions 22 and 23 of the outer casing holding member 20 (the outer side in the arrangement direction of the side wall portions 22 and 23).

The latch bodies 49 and 49 are elastically bendable and deformable in the width direction of the grip member receiving portion 43 (the direction in which the pair of side plate portions 43b and 43b are arranged). The locking claw portions 50 and 50 are formed to protrude inward from the inner surfaces 43b1 and 43b1 of the side plate portions 43b and 43b. The locking claw portion 50 can be locked to the one end edge 28a of the locking recess 28 of the outer casing holding member 20. When the locking claw portion 50 is locked to one end edge 28a of the locking recess portion 28, the backward movement of the outer gripping member 20 accommodated in the grip member receiving portion 43 can be restricted.

The front surface 50a of the locking claw portion 50 is a surface facing forward and is a locking surface that is locked to one end edge 28a of the locking recess 28. The front surface 50a of the locking claw portion 50 may be, for example, an inclined surface that increases the protruding height toward the front, or may be a surface perpendicular to the inner surface of the latch body 49. The rear surface 50b of the locking claw portion 50 may be, for example, an inclined surface whose projection height is decreased toward the rear.

In the front portion of the grip member receiving portion 43, a tapered recess 43d that faces the internal space 44 and is tapered toward the front from the rear is formed. At the front end portion of the tapered recess 43d, the optical fiber 73 is introduced into the joint body 10 An opening is formed at the rear end of the optical fiber introduction hole 42a. The tapered recess 43d guides the leading end of the optical fiber 73 to smoothly insert into the optical fiber introduction hole 42a.

As shown in FIG. 1B and FIG. 4B, the lower surface 43c1 (inner surface) of the rear portion of the top plate portion 43c is pressed against the end of the optical fiber cable 70 which is housed in the inner space 44 and held by the outer grip member 20. The portion 46 is formed to protrude downward.

The protruding height of the pressing portion 46 may be set, for example, in a state where the outer casing holding member 20 at the end of the optical fiber cable 70 is inserted into the internal space 44, and a sufficient pressing force is applied to the upper surface of the optical fiber cable 70, and The optical fiber cable 70 is held and firmly fixed to the bottom plate portion 43a.

Next, the outer sheath holding member 20 according to the present embodiment will be described in detail with reference to Figs. 2 to 5 . 2A is a perspective view of the outer casing holding member 20. FIG. 2B is a view of the outer casing holding member 20 as seen from one end (first cable groove 24A) of the groove portion 24 to be described later. 2C is a view of the outer casing holding member 20 as seen from the other end (second cable groove 24B) of the groove portion 24 to be described later. Fig. 3A is a plan view showing the optical connector 100 in which the end of the first optical fiber cable 71, which will be described later, has been inserted into the first cable groove 24A. FIG. 3B is a side cross-sectional view of the optical connector 100 to which the first optical fiber cable 71 has been mounted. 4A is a horizontal cross-sectional view of the optical connector 100 to which the first optical fiber cable 71 has been mounted. 4B is a rear view of the optical connector 100 to which the first optical fiber cable 71 has been mounted. Fig. 5A is a plan view showing the optical connector 100 in which the end of the second optical fiber cable 72, which will be described later, has been inserted into the second cable groove 24B. FIG. 5B is a side cross-sectional view of the optical connector 100 to which the second optical fiber cable 72 has been mounted.

In the following description, reference is made to the XYZ coordinate system shown in FIGS. 2A to 2C. In detail, it is the length of the groove portion 24 of the outer casing holding member 20. The side direction is set to the X direction. The width direction (direction perpendicular to the X direction) of the groove portion 24 is referred to as the Y direction. The direction parallel to the depth direction of the groove portion 24 (the direction perpendicular to the X direction and the Y direction) is defined as the Z direction. The Z direction can also be referred to as the up and down direction. The side wall portions 22 and 23 project upward in the upward direction with respect to the bottom wall portion 21. However, the above is not intended to limit the direction in which the outer casing holding member 20 is used.

As shown in FIG. 2A, the outer casing holding member 20 has a bottom wall portion 21 and a pair of side wall portions 22, 23 which are erected at intervals with each other on the bottom wall portion 21. The outer casing holding member 20 is, for example, a plastic molded article.

The bottom wall portion 21 is formed in a plate shape which is, for example, a rectangular shape in plan view.

Each of the side wall portions 22 and 23 is formed on the upper surface of the bottom wall portion 21 and protrudes vertically upward (Z direction) with respect to the bottom wall portion 21. The pair of side wall portions 22 and 23 are formed along the side edges of one side and the other side of the bottom wall portion 21, respectively, and cover the entire length of the bottom wall portion 21.

A groove portion 24 is defined between the pair of side wall portions 22, 23. Both ends of the groove portion 24 in the longitudinal direction (X direction) are formed to be open (open).

The groove portion 24 has a first cable groove 24A and a second cable groove 24B. The first cable groove 24A is formed at one end portion of the groove portion 24 in the longitudinal direction to embed the first optical fiber cable 71, and the second cable groove 24B is formed. The other end portion in the longitudinal direction of the groove portion 24 is fitted to the second optical fiber cable 72.

The groove width W2 of the second cable groove 24B is smaller than the groove width W1 of the first cable groove 24A. The center of the groove width of the first cable groove 24A and the second cable groove 241B coincide with each other.

The first cable groove 24A and the second cable groove 24B may each have a length that is not half the length of the bottom wall portion 21. The length of the first cable groove 24A and the second cable groove 24B shown in FIG. 2A and the like is, for example, about one-third of the entire length of the outer casing holding member 20. Therefore, the first cable groove 24A and the second cable groove 24B are not connected to each other, but are formed to be spaced apart from each other in the longitudinal direction of the bottom wall portion 21 via the central portion 20A.

As shown in Figs. 7A and 7B, the optical fiber cable 70 is formed by embedding the optical fiber 73 and an anti-tension body 74, 74 in a rectangular outer casing 75 made of synthetic resin. The optical fiber cable 70 can be exemplified by a light introduction cable or the like.

The optical fiber 73 may be, for example, an optical fiber, an optical fiber, or the like. As the optical fiber 73, a coated optical fiber having a configuration in which a resin coating material 73b is adhered to the outer periphery of the bare optical fiber 73a (see FIG. 1B) can be used.

The optical fiber cable 70 has a first optical fiber cable 71 shown in Fig. 7A and a second optical fiber cable 72 shown in Fig. 7B.

The second optical fiber cable 72 has a smaller cross-sectional dimension than the first optical fiber cable 71. The width of the second optical fiber cable 72 shown in the figure is smaller than the width of the first optical fiber cable 71, and the height is smaller than the height of the first optical fiber cable 71. In FIGS. 7A and 7B, the width is the dimension of the short side direction of the cross section (that is, the left and right direction). The height is the dimension of the longitudinal direction of the cross section (that is, the up and down direction).

In the following description, the end of the optical fiber cable 70 (71, 72) is combined with the outer sheath holding member 20 fixed at the end, and is referred to as a gripping member cable end 76.

As shown in FIG. 1B and FIG. 3A, the first cable groove 24A can be fitted into the end of the first optical fiber cable 71 including the outer casing 75. In the first cable groove 24A, The first optical fiber cable 71 can be inserted in a posture in which the width direction of the first optical fiber cable 71 (the horizontal direction in FIG. 7A) faces the groove width direction.

As shown in FIG. 5A, the second cable groove 24B can be fitted to the end of the second optical fiber cable 72 including the outer casing 75. In the second cable groove 24B, the second optical fiber cable 72 can be fitted in a posture in the width direction (the horizontal direction in FIG. 7B) toward the groove width direction.

As shown in FIG. 2A, on the inner surfaces 22a and 23a of the side wall portions 22 and 23 which are the inner side surfaces of the first cable groove 24A, gripping claws 25 extending in the depth direction of the first cable groove 24A are respectively protruded. 25 (hereinafter, also referred to as the first grip claw 25). The first grip claws 25 are, for example, ridges having a substantially triangular cross section whose width gradually narrows toward the protruding direction.

The first grip claws 25 and 25 are arranged in plural at intervals in the longitudinal direction of the first cable groove 24A (groove portion 24). The first grip claws 25 and 25 are disposed at opposite positions across the first cable groove 24A.

The grip claws 26 and 26 extending in the depth direction of the second cable groove 24B are respectively protruded from the inner surfaces 22b and 23b of the side wall portions 22 and 23 which are the inner side surfaces of one of the second cable grooves 24B (hereinafter also It is called the second grip claw 26). The second grip claws 26 are, for example, ridges having a substantially triangular cross section whose width gradually narrows toward the protruding direction.

The second grip claws 26 and 26 are arranged in plural at intervals in the longitudinal direction of the second cable groove 24B (groove portion 24). The second grip claws 26 and 26 are disposed at opposite positions across the second cable groove 24B.

In the following description, the inner surfaces 22a and 23a facing each other via the first cable groove 24A may be referred to as first inner side surfaces 22a and 23a, respectively. The inner surfaces 22b and 23b facing each other across the second cable groove 24B are also referred to as second inner side surfaces 22b and 23b.

The first inner side faces 22a, 23a are parallel to each other. The second inner side faces 22b and 23b are parallel to each other and are parallel to the first inner side faces 22a and 23a.

The centers of the groove widths of the first cable groove 24A and the second cable groove 24B are identical to each other. Specifically, the center between the first inner side faces 22a and 23a of the first cable groove 24A facing each other and the center between the second inner side faces 22b and 23b of the second cable groove 24B facing each other are aligned with each other.

The first grip claws 25 have a main portion 25a that is fixed in a protruding size from the first inner side surfaces 22a and 23a, and a tapered upper end portion 25c that is formed at an upper end portion of the first cable groove 24A in the main portion 25a.

The protruding portions of the main portions 25a of the plurality of first grip claws 25 are identical to each other. The ridgelines 25b of the main portions 25a of the first grip claws 25 that face each other in the groove width direction (Y direction) of the first cable groove 24A are parallel to each other.

The tapered upper end portion 25c has a tapered shape in which the protruding height is gradually decreased toward the upper side (the opening side of the first cable groove 24A). The tapered upper end portion 25c allows the first optical fiber cable 71 to be pushed from the upper side to the first cable groove 24A smoothly and easily.

In the following description, a plane passing through the center between the ridgelines 25b of the main portion 25a of the first grip claws 25 facing each other and perpendicular to the groove width direction of the first cable groove 24A is referred to as a virtual vertical plane S1 (refer to FIG. 3A). ).

As shown in FIG. 2A, the second grip claws 26 have a main portion 26a that is fixed from the second inner side surfaces 22b and 23b in a protruding dimension, and a tapered upper end that is formed at an upper end portion of the second cable groove 24B in the main portion 26a. Part 26c.

The protruding portions of the main portions 26a of the plurality of second grip claws 26 are identical to each other. The ridgelines 26b of the main portions 26a of the second grip claws 26 that face each other in the groove width direction of the second cable groove 24B are parallel to each other.

The tapered upper end portion 26c has a tapered shape in which the protruding height is gradually decreased toward the upper side (the opening side of the second cable groove 24B). The tapered upper end portion 26c allows the second optical fiber cable 72 to be smoothly and easily pushed from the upper side to the second cable groove 24B.

The center between the ridgelines 26b of the main portions 26a of the second grip claws 26 that face each other in the groove width direction of the second cable groove 24B is located in the virtual vertical plane S1 (see FIG. 3A).

The separation distance between the first inner side faces 22a and 23a of the first cable groove 24A (the groove width W1 of the first cable groove 24A) is set to be equal to or slightly larger than the width dimension of the first optical fiber cable 71. The separation distance between the ridgelines 25b of the first grip claws 25 that face each other in the groove width direction of the first cable groove 24A is set to be slightly smaller than the width dimension of the first optical fiber cable 71.

In the outer casing 75 of the first optical fiber cable 71 that has been pushed into the first cable groove 24A, the first grip claws 25 (more specifically, the main portion 25a) are caught from both sides. The first optical fiber cable 71 is fixed to the outer casing holding member 20 by being gripped by the first grip claws 25 from both sides. The first gripping claw 25 contributes to the securing of the cable pulling fixing force of the first optical fiber cable 71 with respect to the outer casing holding member 20 (that is, the rear side of the first optical fiber cable 71 with respect to the outer casing holding member 20 (the groove portion 24) The protection of the movement resistance of one of the end sides) is effective.

The separation distance between the second inner side faces 22b and 23b of the second cable groove 24B (the groove width W2 of the second cable groove 24B) is set to be equal to or slightly larger than the width dimension of the second optical fiber cable 72. The separation distance between the ridgelines 26b of the second grip claws 26 that face each other in the groove width direction of the second cable groove 24B is relative to The width of the second optical fiber cable 72 is set to be slightly smaller.

In the outer casing 75 of the second optical fiber cable 72 that has been pushed into the second cable groove 24B, the second grip claws 26 (more specifically, the main portion 26a) are caught from the both sides. The second optical fiber cable 72 is fixed to the outer casing holding member 20 by the second grip claws 26 being gripped from both sides. The second gripping claws 26 contribute to the securing of the cable pulling fixing force of the second optical fiber cable 72 with respect to the outer casing holding member 20 (that is, the rearward portion of the second optical fiber cable 72 with respect to the outer casing holding member 20 (the groove portion 24) The movement resistance of the other end) is effective).

In order to easily recognize the first cable groove 24A and the second cable groove 24B in the side wall portions 22 and 23, a position indicating mark 29 may be formed at any of the side wall portions 22 and 23. In the outer sheath holding member 20 shown in Fig. 2A and the like, a position indicating mark 29 is formed on a region corresponding to the second cable groove 24B among the upper end faces of the side wall portion 22.

The position indication mark 29 may be, for example, a concave portion formed on the upper end surface of the side wall portion 22, and may be formed by printing or the like.

As shown in FIG. 3A, when the outer casing holding member 20 is attached to the end of the first optical fiber cable 71, since the outer casing holding member 20 is oriented rearward in the first cable groove 24A, the position indicating mark 29 is located. The outer sleeve holds the front portion of the member 20.

On the other hand, as shown in FIG. 5A, when the outer casing holding member 20 is attached to the end of the second optical fiber cable 72, the outer casing holding member 20 is in the rearward posture of the second cable groove 24B. The mark 29 is located at the rear of the outer casing holding member 20.

Thus, by the position indication mark 29, since it can be easily visually observed By grasping the posture of the outer casing holding member 20, it is possible to prevent an error in the mounting operation of the outer end of the optical fiber cable 70 (71, 72) by the outer casing holding member 20 due to the mistake of the cable grooves 24A, 24B.

As shown in FIG. 2A, the inner surface 21a of the bottom wall portion 21 of the groove portion 24 has a first groove bottom surface 21b (bottom surface) which serves as a groove bottom of the first cable groove 24A, and a groove bottom which serves as the second cable groove 24B. The second groove bottom surface 21c (bottom surface).

As shown in FIGS. 2B and 2C, the second groove bottom surface 21c of the second cable groove 24B is positioned higher than the first groove bottom surface 21b of the first cable groove 24A. That is, the second cable groove 24B is formed shallower than the first cable groove 24A. The second groove bottom surface 21c is formed in parallel with the first groove bottom surface 21b.

The first groove bottom surface 21b may be perpendicular to the first inner side surfaces 22a and 23a. The second groove bottom surface 21c may be perpendicular to the second inner side surfaces 22b and 23b.

As shown in FIG. 2A, the bottom wall portion 21 has a first bottom wall portion 21A constituting the first cable groove 24A and a second bottom wall portion 21B constituting the second cable groove 24B.

The first recessed portion 21d recessed from the first groove bottom surface 21b is formed in the first bottom wall portion 21A. The first recessed portion 21d is formed at a position including the center in the groove width direction of the first cable groove 24A, and extends in the longitudinal direction of the groove portion 24. The first recess 21d is formed to cover almost the entire length of the first cable groove 24A. The first recessed portion 21d of the present embodiment penetrates in the thickness direction (Z direction) of the bottom wall portion 21, and forms a first slit that is open at one end 21h of the bottom wall portion 21 corresponding to one end in the longitudinal direction of the groove portion 24. 21d.

As shown in FIG. 5B, the first slit 21d is formed to be flexibly deformed when the optical fiber 73 (inserted optical fiber) pulled out from the end of the second optical fiber cable 72 embedded in the second cable groove 24B is flexibly deformed. At least a portion of portion 77B.

As shown in FIG. 2A, the inner surface of the first slit 21d (first recess 21d) has a first direction toward the first slit 21d from the first groove bottom surface 21b of the first cable groove 24A. The first inclined inner surface 21f which is inclined inside the width direction of the slit 21d. The first inclined inner surface 21f smoothly guides the bent portion 77B (see FIG. 5B) of the optical fiber 73 into the first slit 21d. The first inclined inner surface 21f is formed on at least the first groove bottom surface 21b side of the inner surface of the first slit 21d, but may be formed, for example, on the entire inner surface of the first slit 21d.

The second recessed portion 21e recessed from the second groove bottom surface 21c is formed in the second bottom wall portion 21B. The second recessed portion 21e is formed at a position including the center in the groove width direction of the second cable groove 24B, and extends in the longitudinal direction of the groove portion 24. The second recess 21e is formed to cover almost the entire length of the second cable groove 24B. The second recessed portion 21e of the present embodiment penetrates in the thickness direction (Z direction) of the bottom wall portion 21, and forms the second opening of the other end 21i of the bottom wall portion 21 corresponding to the other end in the longitudinal direction of the groove portion 24. Slit 21e.

As shown in FIG. 3B, the second slit 21e is formed to be deflected when the optical fiber 73 (inserted optical fiber) pulled out from the end of the first optical fiber cable 71 embedded in the first cable groove 24A is flexibly deformed. At least a portion of portion 77A.

As shown in FIG. 2A, the inner surface of the second slit 21e (first recess 21d) has a second direction toward the second slit 21e from the second groove bottom surface 21c of the second cable groove 24B. The second inclined inner surface 21g which is inclined inside the width direction of the slit 21e. The second inclined inner surface 21g guides the curved portion 77A (see FIG. 3B) of the optical fiber 73 smoothly into the second slit 21e. The second inclined inner surface 21g is formed on at least the second groove bottom surface of the inner surface of the second slit 21e. The portion on the side of 21c may be formed, for example, on the entire inner surface of the second slit 21e.

In the outer casing holding member 20, since the first slit 21d and the second slit 21e are formed in the bottom wall portion 21, the longitudinal direction (X direction) of the side wall portions 22 and 23 is made in the cable grooves 24A and 24B. The elastic deformation of the form in which the ends are formed away from each other becomes easy. Therefore, the insertion of the optical fiber cables 71, 72 to the cable grooves 24A, 24B becomes easy.

For example, when the end of the first optical fiber cable 71 is fitted into the first cable groove 24A, the side wall portions 22 and 23 are elastically deformed so that the end portions of the side wall portions 22 and 23 (the one end side of the groove portion 24) are ended. The portions are separated from each other, and the first optical fiber cable 71 to the first cable groove 24A is easily inserted.

In the outer casing holding member 20, since the first slit 21d and the second slit 21e are formed in each of the first bottom wall portion 21A and the second bottom wall portion 21B, the entire side wall portions 22 and 23 can be centered. The region 20A is deformed in the form of a fulcrum as a fulcrum. For example, the side wall portions 22 and 23 can be shaken by the side wall portions 22 and 23 in such a manner that the front end portions are apart from each other and the rear end portions are brought close to each other. Therefore, it is easy to deform the end portions of the side wall portions 22 and 23 away from each other.

The innermost surface 27A of the first cable groove 24A is a surface formed by a step between the first cable groove 24A and the fiber receiving groove 30 (described later) having a smaller width than the first cable groove 24A. The innermost surface 27A is a surface that abuts against the end surface of the first optical fiber cable 71 of the first cable groove 24A (particularly, the end surface of the outer casing 75). The innermost side surface 27A can be positioned relative to the outer casing holding member 20 in the longitudinal direction of the outer casing holding member 20 use.

The innermost surface 27B of the second cable groove 24B is a surface formed by a step between the second cable groove 24B and the fiber receiving groove 30 (described later) having a smaller width than the second cable groove 24B. The innermost surface 27B can be abutted against the end surface of the second optical fiber cable 72 (particularly the end surface of the outer casing 75) that is fitted into the second cable groove 24B, and is the second in the longitudinal direction of the outer casing holding member 20. The fiber optic cable 72 is utilized relative to the positioning of the outer casing holding member 20.

The groove portion 24 of the outer casing holding member 20 has an optical fiber receiving groove 30 in which the optical fiber 73 of the first optical fiber cable 71 or the second optical fiber cable 72 is accommodated between the first cable groove 24A and the second cable groove 24B.

The optical fiber accommodating groove 30 is formed to extend in the longitudinal direction of the bottom wall portion 21, and connects the first cable groove 24A and the second cable groove 24B. The optical fiber receiving groove 30 is formed to be narrower than the first cable groove 24A and the second cable groove 24B.

The optical fiber receiving groove 30 has an introduction portion 30a that is open upward and a main groove portion 30b that is narrower than the introduction portion 30a. The main groove portion 30b is formed downward from the bottom of the introduction portion 30a.

The depth of the fiber receiving groove 30 can be set as follows: at least the optical fiber 73 or the bare fiber can be accommodated from the optical fiber cable 70 in a state where the optical fiber cable 70 (71, 72) has been embedded in the cable grooves 24A, 24B. 73a. The depth of the optical fiber receiving groove 30 may be, for example, as shown in FIG. 2B, and is substantially the same as the depth of the first cable groove 24A, but is not limited thereto.

As shown in FIG. 2A, in the outer surface of the side wall portions 22, 23 of the outer casing gripping member 20 in the width direction, the locking recesses 28, 28 are formed substantially at the center in the longitudinal direction of the side wall portions 22, 23. The locking recess 28, 28 is an opening formed on the upper surface and the lower surface of the side wall portions 22, 23. That is, the locking recesses 28, 28 are formed to cover the entire height direction of the side wall portions 22, 23.

As shown in FIG. 4A, the locking recessed portion 28 is a recessed portion having a fixed depth from the outer surface of the side wall portions 22, 23 toward the inner side in the width direction of the outer casing holding member 20, and is locked to the latch 48 of the pull fixing housing 41. The locking claw portion 50.

The latching recessed portion 28 is located at one end edge 28a of the second cable groove 24B side, and can be locked to the latch in a state in which the outer sheathing member 20 is attached to the first optical fiber cable 71 in the pull-and-retaining housing 41. The front surface 50a of the locking claw portion 50 of the lock 48. The one end edge 28a may be, for example, an inclined surface that is inclined forward toward the depth direction of the locking recess 28, and may be a surface parallel to the depth direction of the locking recess 28 (a surface perpendicular to the side bottom surface 28c).

In the other end edge 28b of the locking recessed portion 28 on the side of the first cable groove 24A, the outer sheathing member 20 (see FIG. 5A) that has been attached to the second optical fiber cable 72 can be accommodated in the drawing fixing housing 41. Next, the front surface 50a of the locking claw portion 50 of the latch 48 can be locked.

The other end edge 28b may be, for example, an inclined surface similar to the one end edge 28a or a surface parallel to the depth direction of the locking recess 28.

In the illustrated example, the locking claw portion 50 (locking portion) formed in the convex portion of the grip member receiving portion 43 is configured to be locked to the locking recess portion 28 of the outer casing holding member 20, but may be Conversely, the convex portion formed on the outer casing holding member 20 is locked to the concave portion formed in the holding member receiving portion 43.

The outer casing holding member 20 can be used in two types of use. First use As shown in FIG. 3A and FIG. 3B, the first optical fiber cable 71 is held and fixed by the outer casing holding member 20. The second use mode is as shown in FIGS. 5A and 5B, and the outer casing member 20 is used. The form of the second optical fiber cable 72 is held and fixed.

Hereinafter, various usage forms will be described.

[First use form]

In the first embodiment, the optical connector 100 is attached to the end of the first optical fiber cable 71 (see FIG. 7A).

As shown in FIGS. 1A and 1B, a tool optical connector in which an insertion piece (not shown) is inserted between one of the clip portions 63 of the clip portion of the optical connector 100 is inserted.

As shown in FIG. 3A and FIG. 3B, the end of the first optical fiber cable 71 is fitted into the first cable groove 24A, whereby the outer casing holding member 20 is attached to the end of the first optical fiber cable 71. The optical fiber 73 passes through the optical fiber receiving groove 30 and further extends forward through the second cable groove 24B. Thereby, the gripping member cable end 76 is obtained.

As shown in FIG. 1B, the attached grip member cable end 76 is inserted into the grip member receiving portion 43 from the insertion port 45. At this time, the outer casing grip member 20 abuts against the rear surface 50b of the locking claw portion 50 of the latch 48 (see FIG. 4A) to enlarge the latch 48 toward the outer side.

As shown in FIG. 4A, when the outer casing holding member 20 is further moved forward, the entire outer casing holding member 20 is housed in the holding member receiving portion 43, and the locking claw portion 50 is brought to the locking concave portion 28, and The locking claw portion 50 is inserted into the locking recess 28 by the elastic repulsive force of the latch 48 and is locked by One end edge 28a.

Thereby, the outer casing holding member 20 is fixed to the grip member receiving portion 43. The position of the outer casing holding member 20 is referred to as a storage position.

As shown in FIG. 4B, in the storage position, the pair of side plate portions 43b, 43b are on the outer surface side of the pair of side wall portions 22, 23, and restrict the outward displacement of the pair of side wall portions 22, 23.

Therefore, even if the side wall portions 22 and 23 are displaced in the widening direction by applying a force in the drawing direction to the optical fiber cable 70 (the first optical fiber cable 71), the side wall portions 22 and 23 are abutted against the side plates. Parts 43b, 43b. Thereby, the displacement in the widening direction of the side wall portions 22, 23 as shown by the two-dot chain line in Fig. 2B can be prevented. In this way, the situation in which the optical fiber cable 70 is pulled out from the outer casing holding member 20 can be suppressed or prevented.

As shown in Figs. 1A and 4A, the optical fiber 73 projecting from the end of the optical fiber cable 70 is inserted into the nip portion 63 of the yoke portion socket 60 from the optical fiber introduction hole 42a, and the bare optical fiber 73a of the optical fiber 73 is conjugated. Connected to the built-in fiber 62.

As shown in FIG. 3B, when the outer casing holding member 20 reaches the storage position, the optical fiber 73 is flexibly deformed in the holding member receiving portion 43. Symbol 77A is a flexure. Thereby, a sufficient abutting force can be imparted to the optical fiber 73.

Since the second slit 21e is formed in the second bottom wall portion 21B, when the flexure portion 77A is large, the flexure portion 77A is introduced into the second slit 21e. Therefore, the flexure portion 77A does not abut against the second bottom wall portion 21B, and there is no case where the flexural deformation of the optical fiber 73 is restricted. Accordingly, adverse effects on the optical characteristics of the optical fiber 73 can be avoided.

As shown in FIG. 1A, after the optical fiber 73 is coupled to the built-in optical fiber 62, the insertion piece (not shown) is removed from the nip portion 63. Thereby, one of the clip portions 63 is closed to the element, and the built-in optical fiber 62 and the optical fiber 73 are held and fixed in a state of being joined to each other. Therefore, the state in which the optical fiber 73 (bare fiber 73a) of the clip portion 63 is connected to the built-in type optical fiber 62 can be stabilized.

By the above, the mounting of the optical connector 100 to the end of the first optical fiber cable 71 is completed.

[Second use form]

In the second usage mode, the optical connector 100 is attached to the end of the second optical fiber cable 72 (see FIG. 7B).

As shown in FIG. 5A and FIG. 5B, the end of the second optical fiber cable 72 is fitted into the second cable groove 24B, whereby the outer casing holding member 20 is attached to the end of the second optical fiber cable 72, and the cable end 76 of the holding member is obtained. .

When the gripping member cable end 76 is inserted into the grip member receiving portion 43 from the insertion port 45, the outer covering member 20 can be housed in the grip member receiving portion 43 and the locking claw portion can be made in the same manner as in the first use state. The 50 card terminates at the other end edge 28b of the locking recess 28. Thereby, the outer casing holding member 20 is fixed to the grip member receiving portion 43.

At this time, the bare fiber 73a of the optical fiber 73 can be coupled to the built-in optical fiber 62 in the nip portion 63.

As shown in FIG. 5B, when the outer casing holding member 20 reaches the storage position, the optical fiber 73 is flexibly deformed in the holding member receiving portion 43. Symbol 77B is a flexure.

Since the first slit 21d is formed in the first bottom wall portion 21A, it is scratched. When the curved portion 77B is large, the bent portion 77B is introduced into the first slit 21d. Therefore, the flexure portion 77B does not abut against the first bottom wall portion 21A, and there is no possibility of restricting the deflection of the optical fiber 73. Accordingly, adverse effects on the optical characteristics of the optical fiber 73 can be avoided.

Thereafter, the insertion piece (not shown) is removed from the nip portion 63 so that one of the nip portions 63 closes the element, and the built-in optical fiber 62 and the optical fiber 73 are held and fixed in a state of being joined to each other ( Refer to Figure 1A).

By the above, the mounting of the optical connector 100 to the end of the second optical fiber cable 72 is completed.

As described above, the outer jacket holding member 20 has the first cable groove 24A formed at one end of the groove portion 24 to embed the first optical fiber cable 71, and the other end portion formed in the groove portion 24 to embed the second optical fiber cable 72. The second cable groove 24B.

Therefore, it is possible to fit the width dimension of the first and second optical fiber cables 71, 72 to each of the cable grooves 24A, 24B, respectively. In this way, the high cable pulling fixing force can be easily ensured for each of the first and second optical fiber cables 71 and 72, respectively.

Since the outer casing holding member 20 can correspond to the two kinds of optical fiber cables 71, 72, the cost can be suppressed lower than in the case where a dedicated outer casing holding member is prepared for each cable sectional size.

Since the first cable groove 24A and the second cable groove 24B are formed at the opposite end portions of the groove portion 24, it is possible to easily grasp the position at which the various optical fiber cables 71, 72 are fitted to the cable grooves 24A, 24B. As a result, it is possible to suppress the situation in which the optical fiber cables 71 and 72 are fixed to the wrong cable trench.

In the present embodiment, as shown in Fig. 1A, although the outer casing holding member 20 is applied to the optical joint 100, the application target of the outer casing holding member of the present invention is not limited to the optical joint. Instead of the clip portion 63 shown in Fig. 1A, for example, a fiber optic connector such as a mechanical splice may be used.

The optical fiber connection unit 110 shown in FIG. 8 is provided with a connection unit main body 80 and a pull fixing portion 40 having a mechanical adapter 83 (optical fiber connector). The mechanical adapter 83 can be coupled to the optical fiber 82 inserted from one end and the optical fiber 73 inserted from the other end.

The scope of the present invention is not limited to the above-described embodiments, and various modifications can be added without departing from the spirit and scope of the invention.

In the outer sleeve holding member 20 shown in Fig. 2A and the like, the slits 21d and 21e are formed in the bottom wall portion 21, but the outer sleeve holding members of the present invention may not form the slits 21d and 21e.

Fig. 6 is a view showing the outer casing holding member 120 in which the slits 21d, 21e are not formed. The outer casing holding member 120 is different from the outer casing holding member 20 as shown in FIG. 2A and the like in that the slits 21d and 21e are not formed on the bottom wall portion 21.

In the outer sheath holding member 20 shown in FIG. 2A and the like, the first cable groove 24A and the second cable groove 24B are continuous in the longitudinal direction of the groove portion 24 to form a fixed width. However, in the present invention, One or both of the first cable groove and the second cable groove have a structure in which the first groove region and the second groove region having a width smaller than the first groove region are sequentially arranged from one end or the other end of the groove portion 24 The two-stage structure is arranged in the longitudinal direction of the groove portion 24.

The first groove region can be fitted with a fiber cable having a large width, and the second groove region A fiber optic cable with a small width can be fitted.

By providing the two types of groove regions in one or both of the first cable groove and the second cable groove, it is possible to further increase the type of the cable that can be held by the same fixing member for pulling and fixing. Furthermore, the number of groove regions formed in one cable trench may be three or more.

(Second embodiment)

Fig. 9A is a side view of the detaching tool 1 according to the second embodiment of the present invention and the optical connector 200 to which the detachable tool 1 can be applied. FIG. 9B is an exploded perspective view of the detaching tool 1 and the optical connector 200.

As shown in FIGS. 9A and 9B, the optical connector 200 (optical fiber connection unit) includes a joint main body 10 (connection unit main body), and a pull fixing portion 240 that pulls and fixes the end of the optical fiber cable 70 at the rear of the joint main body 10. The optical connector 200 is, for example, a field-mounted optical connector.

The joint main body 10 includes a main body casing 11 and a clip portion ferrule 60 housed in the main body casing 11.

The clip portion ferrule 60 has a ferrule 61 to which the fixed optical fiber 62 (the built-in optical fiber 62) is inserted, and a nip portion 63 (optical fiber connector). The built-in optical fiber 62 protrudes rearward from the ferrule 61.

The clip portion 63 can hold and hold the built-in optical fiber 62 and the optical fiber 73 in a state of being joined by a pair of elements.

In the joint main body 10, an optical fiber 73 (inserted optical fiber) that is pulled out from the end of the optical fiber cable 70 is inserted, and is connected to the built-in optical fiber 62 in the nip portion 63. Symbol P is a connection portion between the optical fiber 73 and the built-in optical fiber 62.

Hereinafter, the front end direction of the ferrule 61 of the ferrule sleeve 60 is attached (FIG. 9A). The left side of the middle is called the front, and the opposite direction is called the rear.

The pull fixing portion 240 has an outer casing holding member 20 that grips and fixes the end of the optical fiber cable 70, and a pulling and fixing outer casing 241 that houses the outer casing holding member 20.

The pull fixing housing 241 has a stopper ring portion 42 that is inserted into the joint body 10 and a rectangular tubular grip member receiving portion 43 that extends rearward from the stopper ring portion 42.

The grip member receiving portion 43 has a cylindrical shape having a rectangular cross section, and includes an elongated plate-shaped bottom plate portion 43a extending in the front-rear direction, and a pair of side plate portions 43b and 43b which are erected on both side edges of the bottom plate portion 43a, and are provided. The top plate portion 43c between the upper ends of the side plate portions 43b, 43b.

The grip member receiving portion 43 can house the outer jacket holding member 20 in the inner space 44 surrounded by the bottom plate portion 43a, the pair of side plate portions 43b and 43b, and the top plate portion 43c. The grip member receiving portion 43 can receive and take out the outer jacket holding member 20 through the insertion opening 45 which is the opening of the rear end.

As shown in FIG. 9B and FIG. 13A, rectangular opening portions 47 and 47 are formed in each of the pair of side plate portions 43b and 43b. At the front edges 47a, 47a of the openings 47, 47, latches 48, 48 extending rearward are formed. The latches 48 and 48 have elongated plate-like latch bodies 49 and 49 extending rearward from the front edges 47a and 47a of the opening portions 47 and 47, and locking portions provided at the front end portions of the latch bodies 49 and 49 in the extending direction. Claws 50, 50.

The side plate portions 43b and 43b are disposed on the outer side surface side (the outer side in the arrangement direction of the side wall portions 22 and 23) of the side wall portions 22 and 23 of the outer sleeve holding member 20 to be described later.

The latch bodies 49, 49 can be at the width of the grip member receiving portion 43 It is elastically bent and deformed (in the direction in which the pair of side plate portions 43b and 43b are arranged). The locking claw portions 50 and 50 (locking portions) are formed to protrude inward from the inner surfaces of the side plate portions 43b and 43b. The locking claw portion 50 is engageable with one end edge 28a (or the other end edge 28b) of the locking recess 28 (lock receiving portion) of the outer casing holding member 20. The locking claw portion 50 can be engaged with the one end edge 28a (or the other end edge 28b) of the locking recess portion 28 to restrict the backward movement of the outer gripping member 20 accommodated in the grip member receiving portion 43.

The front surface 50a of the locking claw portion 50 is a surface facing forward and is an engaging surface that engages with one end edge 28a of the locking recess 28. The front surface 50a of the locking claw portion 50 may be, for example, an inclined surface that increases the protruding height toward the front, or may be a surface perpendicular to the inner surface of the latch body 49. The rear surface 50b of the locking claw portion 50 may be, for example, an inclined surface whose projection height is decreased toward the rear.

As shown in FIGS. 9B and 13B, the upper surface 43c1 (outer surface) of the top plate portion 43c is a flat surface.

A pair of insertion slits 51 and 51 are formed in the top plate portion 43c at intervals in the width direction (Y direction). The insertion slits 51 and 51 are openings for inserting the release operation portions 3 and 3 and the engagement convex portions 4 and 4 of the removal tool 1 to be described later, and extend in the longitudinal direction (X direction) of the top plate portion 43c. form.

The insertion slits 51 and 51 are respectively formed at positions closer to one side and the other side in the center in the width direction (Y direction), and at least a portion and the locking claw portions 50, 50 are in the up and down direction (Z direction). overlapping.

A confirmation slit 52 for visually observing the optical fiber 73 in the member receiving portion 43 at a central position in the width direction (Y direction) is formed in the top plate portion 43c. The confirmation slit 52 extends in the longitudinal direction (X direction) of the top plate portion 43c. And formed. The deflection caused by the optical fiber 73 can be confirmed by the confirmation slit 52.

A front portion of the grip member receiving portion 43 is formed with a tapered recess 43d that faces the inner space 44 and is tapered toward the front side from the rear end. At the front end portion of the tapered recess 43d, an opening is formed at the rear end of the optical fiber introduction hole 42a for introducing the optical fiber 73 into the joint body 10. The tapered recess 43d guides the front end of the optical fiber 73 to smoothly insert into the optical fiber introduction hole 42a.

As shown in Fig. 9B, on the lower surface (inner surface) of the rear portion of the top plate portion 43c, the pressing portion 46 that presses the end of the optical fiber cable 70 that is housed in the outer space 44 and held by the sheath holding member 20 is pressed toward The bottom is highlighted to form.

As shown in Fig. 11, the outer casing holding member 20 has a configuration common to the above-described first embodiment. Further, the outer casing holding member 20 is formed, and the first cable groove 24A is formed so as to reach the one end 21h (the end on the front side in FIG. 11) in the longitudinal direction of the bottom wall portion 21, and is opened (opened) at one end 21h. The first cable groove 24A is formed to extend in the longitudinal direction (X direction) of the bottom wall portion 21.

The second cable groove 24B is formed to reach the other end 21i (the end on the back side in FIG. 11) in the longitudinal direction of the bottom wall portion 21, and is opened (opened) at the other end 21i. The second cable groove 24B is formed to extend in the longitudinal direction of the bottom wall portion 21.

The cross-sectional dimension of the second cable groove 24B perpendicular to the longitudinal direction of the groove portion 24 is smaller than the cross-sectional size of the first cable groove 24A. Therefore, in the first cable groove 24A, the end of the first optical fiber cable 71 can be fitted. In the second cable groove 24B, the end of the second optical fiber cable 72 can be fitted.

Extending the end of the fiber optic cable 70 (71, 72) to the outer sleeve that has been fixed to the end The gripping members 20 are combined to be referred to as the gripping member cable ends 76.

It is preferable that the dimension of the locking recessed portion 28 in the X direction is larger than the dimension of the releasing operation portion 3 (see FIGS. 12 and 13B) of the detaching tool 1 to be described later. Thereby, the release operation portion 3 that has been inserted into the rear portion of the locking recess portion 28 can be moved forward relative to the outer casing holding member 20 to cancel the rear surface 50b of the claw portion 50 by releasing the front edge of the operation portion 3. Push it toward the front and displace it toward the outside.

In the example of the drawing, the locking claw portion 50 (locking portion) formed in the convex portion of the grip member receiving portion 43 is a locking recess portion 28 (lock receiving portion) that is locked to the outer jacket holding member 20 However, the structure in which the convex portion (lock receiving portion) formed in the outer casing holding member 20 is locked to the concave portion (locking portion) formed in the grip member receiving portion 43 can be reversed.

On the outer surfaces of the side wall portions 22 and 23, the first engagement recesses 31 and 31 are formed at positions on the one side in the longitudinal direction (X direction) with respect to the locking recesses 28 and 28.

The first engagement recesses 31 and 31 are recessed portions formed at a fixed depth including the upper edges of the side wall portions 22 and 23, and are in the posture shown in FIG. 12 (the posture in which the first cable groove 24A faces rearward). The first engagement recesses 31 and 31 are formed in front of the side wall portions 22 and 23. Therefore, the first engagement recesses 31 and 31 are provided at intervals from the locking recesses 28 and 28 with respect to the locking recesses 28 and 28.

In the case where the first engagement recesses 31, 31 are formed on the upper portions of the side wall portions 22, 23, since the lower portion of the latch 48 is located lower than the first engagement recess portion 31, the locking claw portion of the latch 48 50 cannot enter the engagement recess 31 Inside.

The end edge 31a located at the rear end of the first engagement recess 31 can be locked to the rear edge 4a of the engagement projection 4 of the detaching tool 1 to be described later. The end edge 31a can be formed, for example, as a surface perpendicular to the side bottom surface 31b of the first engagement recess 31.

On the outer surfaces of the side wall portions 22 and 23, the second engagement recesses 32 and 32 are formed at positions on the other side in the longitudinal direction with respect to the locking recesses 28 and 28.

The second engagement recesses 32 and 32 are recesses formed at a fixed depth including the upper edges of the side wall portions 22 and 23, and are in the posture shown in FIG. 12 (the posture in which the first cable groove 24A faces rearward). The second engagement recesses 32 and 32 are formed at the rear portions of the side wall portions 22 and 23. Therefore, the second engagement recesses 32, 32 are provided at intervals from the locking recesses 28, 28 with respect to the locking recesses 28, 28.

Similarly to the first engagement recesses 31 and 31 described above, the second engagement recesses 32 and 32 are formed at positions where the locking claw portions 50 of the latch 48 cannot enter.

When the outer casing holding member 20 is placed in a posture in which the second cable groove 24B faces rearward, the end edge 32a located at the front end of the second engagement recess 32 can be locked to the trailing edge 4a of the engaging convex portion 4 of the detaching tool 1. . The end edge 32a can be formed, for example, as a surface perpendicular to the side bottom surface 32b of the second engagement recess 32.

Next, a method of attaching the optical connector 200 to the end of the optical fiber cable 70 (the first optical fiber cable 71) will be described.

As shown in FIGS. 9A and 9B, an insertion tool optical connector in which an insertion piece (not shown) is inserted between one of the clip portions 63 of the clip portion of the optical connector 200 is prepared.

The outer end of the first optical fiber cable 71 is attached to the first cable groove 24A to attach the outer casing holding member 20 to the end of the first optical fiber cable 71. The optical fiber 73 passes through the optical fiber receiving groove 30 and further extends forward through the second cable groove 24B. Thereby, the gripping member cable end 76 is obtained.

As shown in FIG. 9B, the attached grip member cable end 76 is inserted into the grip member receiving portion 43 from the insertion port 45. At this time, the outer casing grip member 20 abuts against the rear surface 50b of the locking claw portion 50 of the latch 48 (see FIG. 13A) to enlarge the latch 48 toward the outer side.

As shown in FIG. 13A, when the outer casing holding member 20 is further moved forward, the entire outer casing holding member 20 can be housed in the holding member receiving portion 43, and the locking claw portion 50 can be brought to the locking concave portion 28, and The locking claw portion 50 is inserted into the locking recess portion 28 by the elastic repulsive force of the latch 48 and is locked to the one end edge 28a.

Thereby, the outer casing holding member 20 is fixed to the grip member receiving portion 43. The position of the outer casing holding member 20 is referred to as a storage position.

As shown in Figs. 9A and 13A, the optical fiber 73 projecting from the end of the optical fiber cable 70 is inserted into the nip portion 63 of the yoke portion socket 60 from the optical fiber introduction hole 42a, and the bare optical fiber 73a of the optical fiber 73 is aligned. Connected to the built-in fiber 62.

When the outer jacket holding member 20 reaches the storage position, the optical fiber 73 is flexibly deformed in the grip member receiving portion 43. Thereby, a sufficient abutting force can be imparted to the optical fiber 73.

As shown in FIG. 9A, after the optical fiber 73 is coupled to the built-in optical fiber 62, the insertion piece (not shown) is removed from the nip portion 63. Thereby, the clip portion 63 is made One of the pair of components is closed, and the built-in optical fiber 62 and the optical fiber 73 are held and fixed in a state of being connected to each other. Therefore, the state in which the optical fiber 73 (bare fiber 73a) of the clip portion 63 is connected to the built-in type optical fiber 62 can be stabilized.

By the above, the mounting of the optical connector 200 to the end of the first optical fiber cable 71 is completed.

When the optical connector 200 is attached to the end of the second optical fiber cable 72, the first optical fiber cable 71 is replaced with the end of the second optical fiber cable 72, and the outer end of the second optical fiber cable 72 is fitted into the second cable groove 24B. 20 is mounted at the end of the second fiber optic cable 72.

This other process is the same as the case where the optical connector 200 is attached to the end of the first cable fiber 71.

Next, a method of detaching the outer casing holding member 20 from the drawing fixing outer casing 241 using the detaching tool 1 will be described.

First, the disassembly tool 1 will be described with reference to FIGS. 10 and 12. Figure 10 is a perspective view of the removal tool 1. Figure 12 is a side elevational view of the removal tool 1 and the outer casing holding member 20.

In the following description, the XYZ coordinate system shown in Fig. 10 is sometimes referred to. Specifically, the direction in which the pair of release operation portions 3 and 3 are arranged in the surface perpendicular to the thickness direction of the plate-like base portion 2 is referred to as the Y direction. The direction perpendicular to the thickness direction of the base portion 2 and the Y direction is referred to as the X direction. The direction perpendicular to the X direction and the Y direction is set to the Z direction. The Z direction is also referred to as the up and down direction. The release operation portions 3 and 3 protrude in the downward direction with respect to the base portion 2. The above is not intended to limit the direction in which the disassembly tool 1 is used.

As shown in FIGS. 9 and 10, the detaching tool 1 has a base portion 2, one of which extends from the lower surface 2a of the base portion 2, a pair of release operation portions 3, 3, and a pair of cards projecting from the lower surface 2a of the base portion 2 The convex portions 4, 4 are combined.

The base portion 2 is formed in a plate shape which is, for example, substantially rectangular in plan view. The base portion 2 shown in Fig. 10 is formed in a rectangular shape in plan view.

On the upper surface 2b (outer surface) of the base portion 2, a slip-resistant uneven portion 5 is formed. The slip-resistant uneven portion 5 has a plurality of grooves 5a and a plurality of ridges 5b extending in the width direction (Y direction) in a partial region including the center in the longitudinal direction (X direction) of the base portion 2.

As will be described later, the anti-slip uneven portion 5 can improve the frictional resistance against the upper surface 2b of the base portion 2 of the operator's finger or the like when the detaching tool 1 and the outer covering member 20 are slidably moved in the X direction.

A confirmation window 7 for visually observing the optical fiber 73 in the member receiving portion 43 is formed at substantially the center of the base portion 2. The deflection caused by the optical fiber 73 can be confirmed by the confirmation window 7.

The release operation portions 3 and 3 are formed to extend vertically downward (Z direction) with respect to the lower surface 2a of the base portion 2. The release operation portions 3 and 3 are formed in a columnar shape having a substantially rectangular cross section. The two release operation units 3 and 3 are arranged at intervals in the Y direction.

The front end portions of the release operation portions 3 and 3 are formed with pressing surfaces 6 and 6 that are inclined with respect to the extending directions of the release operation portions 3 and 3.

The pressing surface 6 has an outer side inclined surface 6a formed by the outer side surface 3b of the releasing operation portion 3 from the front end surface 3a of the releasing operation portion 3 to the outer side in the width direction of the base portion 2, and the front end surface 3a from the front side 3a of the releasing operation portion 3 Formed by surface 3c Front side inclined surface 6b. The front inclined surface 6b is an adjacent inclined surface adjacent to the outer inclined surface 6a.

The outer inclined surface 6a is inclined so as to be inward toward the front end portion in the extending direction of the releasing operation portion 3 (in the direction toward the center in the width direction of the base portion 2). The front side inclined surface 6b is inclined so as to be rearward toward the front end side in the extending direction of the release operation portion 3.

Therefore, the pressing edge portion 6c (the pressing portion) which is the boundary between the outer inclined surface 6a and the front inclined surface 6b is rearward toward the front end portion in the extending direction of the releasing operation portion 3, and is further inward. The form of the square is tilted.

As will be described later, the pressing edge portion 6c presses the locking claw portion 50 so that the locking claw portion 50 of the latch 48 faces outward when the releasing operation portion 3 is inserted into the drawing fixing housing 241 ( The displacement of the fixing outer casing 241 in the outward direction is shifted (see FIGS. 13 and 14).

The engaging convex portions 4, 4 are formed to protrude vertically downward (Z direction) with respect to the lower surface 2a of the base portion 2. The engaging convex portions 4, 4 are formed in a substantially rectangular cross section. The two engagement convex portions 4 and 4 are arranged at intervals in the Y direction.

The engagement convex portions 4 and 4 are located further forward than the release operation portions 3 and 3. The engagement convex portion 4 can be engaged with the first engagement concave portion 31 of the outer casing holding member 20, and by being engaged with the first engagement concave portion 31, the outer casing holding member 20 can be pushed rearward (refer to FIG. 14). And Figure 15).

It is preferable that the protruding size of the engaging convex portion 4 (from the lower surface 2a of the base portion 2) is smaller than the dimension (from the lower surface 2a) of the releasing operation portion 3. Thereby, the engaging convex portion 4 and the releasing operation portion can be easily recognized by visual observation. 3. Therefore, the operator can easily grasp the posture of the detaching tool 1 with respect to the outer casing holding member 20 and the pulling fixing outer casing 241. Therefore, it is possible to prevent the erroneous operation caused by the mistake of the disassembly tool 1 before and after.

Next, an operation of detaching the outer casing holding member 20 from the drawing fixing outer casing 241 using the detaching tool 1 will be described.

As shown in FIG. 9B, the detaching tool 1 is directed toward the drawing fixing outer casing 241 and lowered. As a result, as shown in FIG. 13A and FIG. 13B, the release operation portion 3 can be inserted into the grip member receiving portion 43 by the insertion slit 51, and abuts against the locking claw portion 50 of the latch 48.

Specifically, as shown in an enlarged view on the upper right side of FIG. 13A, the pressing edge portion 6c of the pressing surface 6 of the releasing operation portion 3 abuts against the upper edge 50b1 of the rear surface 50b of the locking claw portion 50. In the enlarged view on the upper right side of FIG. 13A, a cross section showing the position at which the unlocking operation portion 3 abuts on the locking claw portion 50 is displayed.

As shown in FIG. 10, the pressing edge portion 6c is inclined so as to be closer to the rear side toward the front end side in the extending direction of the releasing operation portion 3, so that as shown in an enlarged view of FIG. 13A, Abutting against the rear surface 50b of the locking claw portion 50 at a position closer to the rear and closer to the inner side.

Then, as shown in FIG. 14A and FIG. 14B, when the detaching tool 1 is further lowered by pushing the base portion 2 downward or the like, the rim portion 6c is pushed as shown in an enlarged view on the upper right side of FIG. 14A. Since the locking claw portion 50 abuts on the front side and the outer side in the vicinity of the inclination, the locking claw portion 50 is pushed obliquely forward and displaced outward.

Thereby, the front end portion of the release operation portion 3 can be pushed between the outer casing holding member 20 and the latch 48.

Since the rear surface 50b of the locking claw portion 50 against which the pressing edge portion 6c abuts is inclined toward the outer side toward the rear side, the force obliquely forward from the pressing edge portion 6c is efficiently acted upon. On the rear surface 50b.

By the displacement of the locking claw portion 50 to the outside, the locking of the locking claw portion 50 with respect to one end edge 28a of the locking recess portion 28 can be released.

As shown in FIG. 14B, as the detaching tool 1 is lowered, the engaging convex portion 4 is inserted into the first engaging recessed portion 31, and the engaging edge 31a is engageable.

As shown by the arrows in FIG. 14A and FIG. 14B, a finger or the like is placed on the upper surface 2b of the base portion 2, and the base portion 2 is pressed rearward. At this time, if the place where the finger or the like is placed is made into the slip-resistant uneven portion 5, the pressing force with respect to the rear side of the base portion 2 can be improved, and the reliability of the detaching operation of the outer casing holding member 20 can be improved.

When the base portion 2 is pressed rearward, the engaging convex portion 4 is engaged with the end edge 31a of the first engaging recess portion 31 to be engaged with the first engaging recess portion 31 by the engaging convex portion 4 (the outer covering member) 20) The end edge 31a exerts a force to the rear.

As shown in FIG. 15A and FIG. 15B, the detachment tool 1 moves rearward by applying a force to the rear end edge 31a of the first engagement recessed portion 31 by the engagement convex portion 4. At this time, the detaching tool 1 may slide on the upper surface 43c1 in a state where the lower surface 2a of the base portion 2 abuts against the upper surface 43c1 of the top plate portion 43c of the drawing fixing case 241.

The outer casing holding member 20 moves toward the rear (disassembly direction) together with the movement of the detaching tool 1. Thereby, the outer casing holding member 20 can be taken out from the holding member receiving portion 43 through the insertion opening 45.

As described above, according to the above-described disassembly tool 1, it is possible to The release operation portion 3 is inserted into the drawing fixing outer casing 241, and is pushed between the outer casing holding member 20 and the latch 48 to lock the locking claw portion 50 of the latch 48 against the locking concave portion 28 of the outer casing holding member 20. The lock is released, so that the outer casing holding member 20 can be detached from the drawing fixing outer casing 241. Therefore, when the outer casing holding member 20 is detached, only one working space can be secured on the outer side (upper side) of the drawing fixing outer casing 241. That is, the work space for detaching the jacket holding member 20 can be suppressed to be relatively tight. As a result, the difficulty in disassembling the outer casing holding member 20 can be alleviated.

According to the above-described detaching tool 1, the releasing operation portion 3 can be inserted into the drawing fixing outer casing 241, so that the pressing edge portion 6c formed at the front end portion of the releasing operation portion 3 can push the latch outward. Displace the latch toward the outside. In this way, the engagement of the locking claw portion 50 of the latch 48 with the locking recess 28 of the outer casing holding member 20 can be easily released.

According to the above-described detaching tool 1, the pressing edge portion 6c is formed to be inclined with respect to the extending direction of the releasing operation portion 3, and the pressing edge portion 6c is inclined to push the latch 48 to be displaced outward. Therefore, the displacement of the latch 48 can be smoothly performed.

Since the detaching tool 1 has the engagement convex portion 4, the outer casing holding member 20 can be detached in the detaching direction by the engagement convex portion 4 while being held in the state in which the release of the latch 48 is released by the release operation portion 3. Rear) move.

Therefore, the outer casing holding member 20 can be easily detached from the drawing fixing outer casing 241 by the operation of inserting the detaching tool 1 into the drawing fixing outer casing 241 and moving it backward.

The jacket holding member 20 and the optical connector 200 constitute an optical connector set (Fiber optic connection unit kit).

The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be added without departing from the spirit and scope of the invention.

The number of the operation portion 3 and the engagement convex portion 4 may be at least one of the number of the locking recesses 28 of the outer casing holding member 20 and the locking claw portion 50 of the outer casing 241, for example, one. It can also be more than three.

The outer sheath holding member 20 shown in Fig. 9 and the like has the first cable groove 24A formed at one end of the groove portion 24 and the second cable groove 24B formed at the other end portion, but the outer casing holding member may be a cable groove. There is no cable trench at the end of one of the sides.

In the outer sheath holding member 120 shown in Fig. 16, the other end portion (the portion on the left side in Fig. 16) of the groove portion 24 is not provided with the second cable groove. The space 33 between the side wall portions 22 and 23 at the other end portion of the groove portion 24 is an optical fiber wiring space through which the inserted optical fiber is pulled out from the end of the optical fiber cable held by the first cable groove 24A.

As shown in Fig. 9A, in the above embodiment, the detaching tool 1 is applied to the optical connector 200, but the application target of the detaching tool of the present invention is not limited to the optical connector. Instead of the clip portion 63 shown in Fig. 9A, for example, a fiber connector such as a mechanical adapter can be used.

The optical fiber connection unit 210 shown in FIG. 17 is provided with a connection unit main body 80 having a mechanical adapter 83 (optical fiber connector) and a pull fixing portion 240. The mechanical adapter 83 can be coupled to the optical fiber 82 inserted from one end and the optical fiber 73 inserted from the other end.

In the above embodiment, the release operation unit 3 is used for fastening and fixing. The insertion direction of the case 241 is downward (the direction perpendicular to the direction in which the latch 48 extends), but the insertion direction is not limited thereto, and may be, for example, a direction intersecting the extending direction of the latch 48.

20‧‧‧Outer grip member (cable coat holding member)

20A‧‧‧Central Area

21‧‧‧ bottom wall

21A‧‧‧1st bottom wall

21B‧‧‧2nd bottom wall

21a‧‧‧ inner surface

21b‧‧‧1st groove bottom surface (bottom surface)

21c‧‧‧2nd groove bottom

21d‧‧‧1st slit (1st recess)

21e‧‧‧2nd slit (2nd recess)

21f‧‧‧1st inclined inner surface

21g‧‧‧2nd inclined inner surface

21h‧‧‧One end of the bottom wall

21i‧‧‧The other end of the bottom wall

22, 23‧‧‧ side wall

22a, 23a‧‧‧ inner surface (1st inner side)

22b, 23b‧‧‧ inner surface (2nd inner side)

24‧‧‧Ditch Department

24A‧‧‧1st cable trench

24B‧‧‧2nd cable trench

25‧‧‧1st gripper

25a, 26a‧‧‧ main

25b, 26b‧‧‧ ridgeline

25c, 26c‧‧‧ tapered upper end

26‧‧‧2nd grip claw

27A, 27B‧‧‧ the innermost surface

28‧‧‧Card recess

28a‧‧‧one edge

28b‧‧‧The other edge

28c‧‧‧ side bottom

29‧‧‧Location indication

30‧‧‧Fiber containment ditch

30a‧‧‧Importing Department

30b‧‧‧Main Ditch

W1, W2‧‧‧ trench width

X, Y, Z‧‧ Direction

Claims (11)

A cable jacket holding member having a bottom wall portion and a pair of side wall portions erected at intervals with respect to the bottom wall portion, wherein a groove portion between the pair of side wall portions is formed at one end of the groove portion a second cable groove in which the first optical fiber cable is embedded and a second cable groove in which the second optical fiber cable having a smaller cross-sectional dimension than the first optical fiber cable is embedded in the other end portion of the groove portion, and the second cable The width of the groove is smaller than the first cable trench. The cable jacket holding member according to claim 1, wherein the bottom wall portion is formed with a first recess recessed from a bottom surface of the first cable groove and a second recess recessed from a bottom surface of the second cable trench. The cable jacket holding member according to claim 2, wherein the inner surfaces of the first recess and the second recess have a first recess and a second surface from a bottom surface of the first cable trench and the second cable trench In the depth direction of the concave portion, the inner surface is inclined toward the inner side in the width direction of the first concave portion and the second concave portion. An optical fiber connecting unit comprising: a connecting unit body having an optical fiber connector; and a pulling fixing portion for pulling and fixing an end of the optical fiber cable, wherein the optical fiber connector causes an optical fiber inserted into the optical fiber connector from the first end, and the optical fiber connector The insertion fiber of the optical fiber cable is pulled out and inserted from the second end of the optical fiber connector, and the cable fixing member has the cable jacket holding member of any one of the claims 1 to 3 and the storage. The aforementioned cable jacket holding member Pull the fixing case. The optical fiber connection unit of claim 4, wherein the connection unit body has a socket tube, and the optical fiber is a built-in optical fiber interposed and fixed to the socket tube. The optical fiber connecting unit of claim 4 or claim 5, wherein the pull fixing housing has a pair of side plate portions which are disposed in the cable jacket holding member housed in the pull fixing housing The outer side of the pair of side wall portions is arranged to restrict the outward displacement of the pair of side wall portions. An optical fiber connection unit kit comprising a jacket holding member removal tool, and an optical fiber connection unit according to any one of claims 4 to 6, wherein the outer casing holding member removal tool can receive a casing holding member that is fixed at an end of the optical fiber cable The outer casing holding member is detached from the outer casing for pulling and fixing, and the pulling and fixing portion has the outer casing holding member and the outer casing for pulling and fixing. An outer casing holding member removal tool is an outer casing holding member dismounting tool for detaching the outer casing holding member from a pulling and fixing outer casing that houses an outer casing holding member fixed to an end of the optical fiber cable, and the pulling fixing outer casing has a side plate portion located on the outer side of the outer surface of the outer casing holding member, and a latch having a locking portion of the locking receiving portion that can be locked to the outer surface of the outer casing holding member is formed on the side plate portion. The outer casing holding member removing tool has a base portion and a releasing operation portion extending from the base portion, and the releasing operation portion is inserted into the outer casing for pulling and fixing to be pushed into the outer casing holding member and the latch The latch is displaced in the outward direction to release the locking of the locking receiving portion by the locking portion. The handle member detaching tool is provided in the outer end portion of the unlocking operation portion, wherein the pressing portion is formed by the detaching operation portion toward the pulling and fixing outer casing. The insertion latches the latch to the outside to displace the latch toward the outside. The handle member removing tool according to claim 8 or 9, further comprising an engaging convex portion protruding from the base portion, wherein the engaging convex portion is engaged with the outer casing holding member, and the foregoing The outer casing holding member is pressed in the direction in which the outer casing for pulling and fixing is removed. The grip member removing tool is provided in the outer casing of the request item 10, wherein the protruding size of the engaging convex portion is smaller than the protruding size of the releasing operation portion.