JP6588802B2 - Optical connector and optical connector manufacturing method - Google Patents

Description

  The present invention relates to an optical connector and an optical connector manufacturing method.

  For example, a field assembly type optical connector is known as an apparatus for connecting optical fibers by abutting end faces of optical fibers. An on-site assembly type optical connector is an optical connector having a structure that can be easily assembled to an end of an optical cable at an optical fiber installation site. A built-in fiber is attached in advance to the ferrule of the optical connector before assembly at the factory, and an end of the built-in fiber is disposed in a clamp part (mechanical splice part). At the assembly work site, the outer gripping member is made to grip the outer sheath of the optical cable, and the end portion of the insertion fiber led out from the optical cable is inserted into the clamp portion, and the optical fibers are butt-connected in the clamp portion. .

  Patent Document 1 describes the structure of a jacket gripping member used for an on-site assembly type optical connector. In the jacket gripping member described in Patent Document 1, gripping projections are formed on the surfaces of the pair of side wall portions facing each other, and the gripping projections are bitten into the jacket of the optical cable so that the gap is between the pair of side wall portions. The optical cable is held and fixed.

International Publication No. 2013/129485

  When the optical cable jacket is bitten into the gripping protrusion and the optical cable is gripped and fixed, if the bite amount is large, the operation of putting the optical cable into the jacket gripping member becomes difficult. However, if the amount of biting is small, the holding and fixing of the optical cable will be insufficient.

  SUMMARY OF THE INVENTION An object of the present invention is to sufficiently hold and fix an optical cable while facilitating the work of putting the optical cable into the outer cover holding member.

According to a first aspect of the invention for achieving the above object, the optical cable has a pair of side wall portions each having a grip portion for gripping a jacket of the first optical cable on an inner surface, and is accommodated between the pair of side wall portions. An outer gripping member for gripping the outer sheath by the gripping portion; and an optical connector body having a fixing portion capable of inserting and fixing the outer gripping member therein; and the outer gripping member includes the pair of side walls. When the outer cover of the first optical cable is accommodated between the portions, the outer cover gripping member is deformed so as to spread outward, and when the outer cover gripping member is inserted into the fixed portion, the pair of side walls The outer surface of the portion is pressed by the fixing portion and deformed inward, so that the first optical cable is fastened to the outer gripping member, and the outer gripping member is attached to the outer side of the first optical cable. The first to accommodate Aside from the housing portion, it has a second housing portion that houses the outer sheath of the second optical cable having an outer shape different from that of the first optical cable, and when the optical axis direction of the first optical cable is the front-rear direction, When the outer gripping member in which the outer sheath of the first optical cable is accommodated in the first accommodating portion is inserted into the fixing portion, the outer sheath in which the outer sheath of the second optical cable is accommodated in the second accommodating portion. The optical connector is characterized in that when the member to be gripped is inserted into the fixed portion, the member to be gripped is opposite to the front-rear direction.
Moreover, main 2nd invention for achieving the said objective has a pair of side wall part which equipped the inner surface with the holding part which hold | grips the jacket of a 1st optical cable, and it accommodated between the said pair of side wall parts. A sheath holding member for gripping the sheath of the first optical cable by the grip portion; and an optical connector body having a fixing portion capable of inserting and fixing the sheath gripping member therein. When the outer sheath of the first optical cable is accommodated between the pair of side wall portions, the outer sheath holding member is configured to be deformed so as to spread outward, and when the outer gripping member is inserted into the fixing portion, The outer surface of the pair of side wall portions is pressed by the fixing portion and deformed inward, whereby the first optical cable is configured to be fastened to the jacket holding member, and the jacket holding member is an optical fiber. Fiber between the skin and the jacket The arrangement has been provided the first optical cable Jo strength member is configured to accommodate the second optical cable round the different profile, when the optical axis of the first optical cable and the longitudinal direction, the first When inserting the jacket holding member containing the outer jacket of the optical cable into the fixing portion and when inserting the jacket holding member containing the outer jacket of the second optical cable into the fixing portion, The jacket gripping member is reverse in the front-rear direction, and the jacket gripping member includes a positioning portion that contacts an end portion of the jacket of the second optical cable, and a discharge groove that discharges the fibrous strength member to the outside. The discharge groove is disposed on the optical fiber end side of the second optical cable with respect to the positioning portion.

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

  According to the present invention, it is possible to sufficiently hold and fix the optical cable while facilitating the operation of putting the optical cable into the jacket holding member.

FIG. 1A is a perspective view of the optical connector 100. FIG. 1B is a perspective view of the optical connector 100 with the insertion member 14 and the cover 40 removed. 2A and 2B are perspective views of a state in which the jacket holding member 30 and the square cable 3 are attached to the optical connector main body 10. FIG. 2A also shows an enlarged view of the fixing portion 20. FIG. 3 is a perspective view of a state in which the jacket holding member 30 and the round cable 5 are attached to the optical connector main body 10. 4A and 4B are perspective views of the envelope gripping member 30. FIG. FIG. 5A is a view of the first housing portion 33 as seen from the corner side housing housing side. FIG. 5B is an explanatory diagram of a state in which the jacket holding member 30 in which the square cable 3 is accommodated in the first accommodation portion 33 is inserted into the fixing portion 20 of the optical connector body 10. 6A to 6C are explanatory views showing a state in which the optical connector main body 10 is assembled to the terminal of the round cable 5.

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

  An outer cover gripping member having a pair of side wall portions provided on the inner surface with a grip portion for gripping the outer sheath of the optical cable, and gripping the outer sheath of the optical cable housed between the pair of side wall portions by the grip portion; An optical connector main body having a fixing portion capable of inserting and fixing the outer cover holding member therein, and the outer cover holding member is disposed outside when the outer cover of the optical cable is accommodated between the pair of side wall portions. The outer cover holding member is configured to be deformed so as to expand, and when inserted into the fixed portion, the outer surface of the pair of side wall portions is pressed by the fixed portion and deformed inward. The optical connector is characterized in that the optical cable is configured to be fastened to the jacket holding member. According to such an optical connector, it is possible to sufficiently hold and fix the optical cable while facilitating the operation of putting the optical cable into the outer cover holding member.

  It is desirable that the jacket gripping member has a bottom wall portion and is configured in a U-shaped cross section by the bottom wall portion and the pair of side wall portions. Thereby, a pair of side wall part can be deformed so that it may fall outside using a bottom wall part as a fulcrum.

  It is desirable that a gap be formed between an end portion of the grip portion on the bottom wall portion side and an inner surface of the side wall portion. Thereby, an optical cable becomes difficult to come off.

  The fixing portion is configured to have a U-shaped cross section by a bottom portion and a pair of side portions, and the jacket gripping member faces the bottom wall portion side toward the open side of the fixing portion having a U-shaped cross section. It is desirable to be inserted into the fixed part. Thereby, an optical cable becomes difficult to remove | deviate from the open side of a fixing | fixed part.

  It is desirable that a slit is formed in the bottom wall portion. Thereby, the curvature of an optical fiber can be made loose.

  The jacket gripping member has a second housing portion for housing a sheath of another optical cable having a different external shape from the optical cable, separately from the first housing portion for housing the sheath of the optical cable, When the outer gripping member in which the outer sheath of the optical cable is accommodated in the first accommodating portion is inserted into the fixing portion, the outer grip in which the outer sheath of the other optical cable is accommodated in the second accommodating portion When the member is inserted into the fixing portion, it is desirable that the outer gripping member is in the opposite direction. Thereby, it is not necessary to prepare a dedicated jacket gripping member for each type of optical cable.

  A convex portion is formed on one side wall portion of the pair of side wall portions of the jacket gripping member, and the convex portion is disposed on one side portion of the pair of side portions of the fixing portion in the front-rear direction. It is desirable that a guide portion for guiding the guide is formed. As a result, it is possible to prevent the jacket gripping member from being erroneously inserted in the reverse direction.

  The jacket gripping member is configured to be able to accommodate a round cable in which a fibrous strength member is disposed between an optical fiber and a jacket, and the jacket gripping member is a jacket of the round cable. A positioning portion that comes into contact with the end of the cable, and a discharge groove that discharges the fibrous tensile body to the outside, and the discharge groove is disposed closer to the optical fiber end portion of the round cable than the positioning portion. It is desirable that This facilitates positioning of the round cable while discharging the fibrous strength member from the discharge groove.

  The jacket gripping member is configured to accommodate a round cable in which a fibrous strength member is disposed between an optical fiber and a jacket, and the fixing portion is a mooring portion around which the fibrous strength member is wound. It is desirable to have Thereby, while being able to fasten a round cable, it becomes easy to adjust the force which holds a round cable.

  The optical connector has a cover that holds the outer gripping member inserted into the fixing portion from the rear side, and when the cover is attached to the fixing portion, the fibrous tensile body wound around the anchoring portion is It is desirable to be restrained by the front edge of the cover. Thereby, it becomes difficult to unravel the fibrous strength member wound around the mooring portion.

  It is desirable that a recess is formed on the front edge of the cover. Thereby, the edge part of a fibrous strength body can be discharged | emitted from a recessed part outside.

  An outer cover gripping member having a pair of side wall portions provided on the inner surface with a grip portion for gripping the outer sheath of the optical cable, and gripping the outer sheath of the optical cable housed between the pair of side wall portions by the grip portion; A step of preparing an optical connector main body having a fixing portion capable of inserting and fixing the outer cover holding member therein; and the optical cable is accommodated between the pair of side wall portions of the outer cover holding member so as to spread outward. Deforming the jacket gripping member, inserting the jacket gripping member into the fixed portion, and pressing the outer surfaces of the pair of side wall portions by the fixed portion to deform the optical cable to the inner side. The optical connector manufacturing method is characterized by performing the step of fastening to the jacket gripping member. According to such an optical connector manufacturing method, it is possible to sufficiently hold and fix the optical cable while facilitating the work of putting the optical cable into the jacket holding member.

=== First Embodiment ===
<Basic structure of optical connector 100>
FIG. 1A is a perspective view of the optical connector 100. FIG. 1B is a perspective view of the optical connector 100 with the insertion member 14 and the cover 40 removed. 2A and 2B are perspective views of a state in which the jacket holding member 30 and the square cable 3 are attached to the optical connector main body 10. FIG. 2A also shows an enlarged view of the fixing portion 20. FIG. 3 is a perspective view of a state in which the jacket holding member 30 and the round cable 5 are attached to the optical connector main body 10.

  In the following description, each direction is defined as shown in FIG. 1A. That is, the optical axis direction of the optical cable or the optical fiber is “front-rear direction”, the extended side of the optical cable is “rear”, and the opposite side (the end face side of the ferrule (not shown) of the optical connector 100) is “front”. . The insertion / extraction direction of the insertion member 14 is the vertical direction, the side of the insertion member 14 viewed from the optical connector main body 10 is “upper”, and the opposite side is “lower”. The long side direction of the cross section of the square cable 3 is a direction parallel to the vertical direction. Further, the direction perpendicular to the front-rear direction and the up-down direction is referred to as “left-right direction”, the right side when viewing the front side from the rear side is referred to as “right”, and the left side is referred to as “left”. In addition, the short side direction of the cross section of the square cable 3 is a direction parallel to the left-right direction.

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

  The optical fiber 100 of the square cable 3 can be connected to the optical connector 100. The rectangular cable 3 is an optical cable having a rectangular cross section, for example, a drop cable or an indoor cable. The rectangular cable 3 is an optical cable in which an optical fiber 4 and a pair of linear tensile strength members are collectively covered with a jacket. The pair of strength members are arranged so as to sandwich the optical fiber 4. The direction in which the pair of strength members sandwich the optical fiber 4 is the long side direction of the cross section of the rectangular cable 3.

  Moreover, the optical connector 100 of this embodiment can connect not only the optical fiber 4 of the square cable 3 but also the optical fiber 6 of the round cable 5 as shown in FIG. The round cable 5 is an optical cable having a circular cross section, and is an optical cable in which a fibrous strength member 7 is disposed between an optical fiber 6 and a jacket. The fibrous strength member 7 is, for example, Kevlar (registered trademark).

  The optical connector 100 includes an optical connector main body 10, an insertion member 14, a jacket gripping member 30, and a cover 40.

  The optical connector body 10 includes a ferrule (not shown) and a mechanical splice unit. Here, the ferrule is a cylindrical ferrule used for a single-fiber optical connector. The front end portion of the built-in fiber (not shown) is inserted and fixed to the ferrule, and the end face is polished together with the ferrule. The rear end portion of the built-in fiber is disposed in the aligning groove of the mechanical splice portion.

  The optical connector body 10 includes a front housing 11 and a rear housing 12 in addition to a ferrule and a mechanical splice portion (not shown). The front housing 11 and the rear housing 12 are housings that accommodate a ferrule and a mechanical splice (not shown). The front housing 11 includes a plug frame and a coupling. The rear housing 12 functions as a stop ring, and is in contact with the rear end of a spring (not shown) that biases the ferrule accommodated in a retractable manner forward.

  On the rear side of the optical connector main body 10, a fixing portion 20 for fixing the jacket holding member 30 (and the optical cable) is provided. Here, although the fixing | fixed part 20 is provided in the rear side housing 12 (stop ring), the fixing | fixed part 20 does not need to be provided in the member used as a stop ring.

  The fixing part 20 is a part where the outer gripping member 30 can be inserted and fixed inside. The fixing portion 20 has a bottom portion 21 and a pair of side portions 22, and is configured by the bottom portion 21 and the pair of side portions 22 to have a U-shaped cross section. A space surrounded by the bottom portion 21 and the inner surfaces of the pair of side portions 22 forms an accommodation space for accommodating the jacket gripping member 30. The accommodation space surrounded by the inner surfaces of the bottom portion 21 and the pair of side portions 22 is formed in a groove shape along the front-rear direction, and the opening on the rear end side of the accommodation space inserts the outer cover gripping member 30. It becomes the insertion port 23 for this. In order to attach the cover 40 to the fixed portion 20 by rotating it, the outer peripheral surface of the fixed portion 20 is formed in a cylindrical surface shape having the front-rear direction as an axis.

  A locking projection 24 for attaching the cover 40 is formed on the lower surface of the fixed portion 20 (see FIG. 2B). Moreover, the cross mark 25 is formed in the lower surface of the fixing | fixed part 20 (refer FIG. 2B).

  The bottom part 21 is a part which comprises the lower part of the fixing | fixed part 20 along the front-back direction. The upper surface of the bottom portion 21 is a surface constituting a groove-shaped accommodation space. Further, the upper surface of the bottom portion 21 serves as a slide surface for sliding the jacket gripping member 30 in the front-rear direction. Side portions 22 are formed so as to rise upward from both left and right edges of the bottom portion 21.

  The side part 22 is a part which comprises the side surface of the fixing | fixed part 20 along the front-back direction. The inner surface of the side portion 22 is a surface constituting a groove-shaped accommodation space. The pair of side portions 22 are arranged at an interval so as to face each other in the left-right direction. The inner surfaces of the pair of side portions 22 serve as slide surfaces for sliding the jacket gripping member 30 in the front-rear direction. In the present embodiment, a step is formed on the inner surface of the side portion 22 that becomes a slide surface, so that the contact area between the inner surface of the side portion 22 and the outer cover gripping member 30 is reduced. It is easy to insert the jacket gripping member 30 between the portions 22. However, a step may not be formed on the inner surface of the side portion 22. In the present embodiment, as will be described later, the outer gripping member 30 is inserted between the pair of side portions 22, and the pair of side portions 22 presses the outer gripping member 30 inward from the left and right sides. Become.

  A claw portion 221 is formed on the upper edge of each side portion 22. The claw portion 221 is a portion that prevents the outer gripping member 30 from slipping out, and is formed to project inward from the upper edge of the side portion 22. The pair of claw portions 221 are arranged at an interval narrower than the width of the jacket holding member 30 and are arranged on the upper side of the jacket holding member 30.

  A guide groove 222 is formed on the inner surface of one side 22 (here, the right side 22). The guide groove 222 is a groove for guiding the convex portion 351 of the jacket gripping member 30 in the front-rear direction. Since the guide groove 222 is formed only on one side portion 22, the vertical direction of the jacket gripping member 30 is specified, and it is possible to prevent the jacket gripping member 30 from being erroneously inserted upside down.

  An engagement hole 223 is formed in the side portion 22 where the guide groove 222 is formed (here, the right side portion 22). The engagement hole 223 is a hole that penetrates the side portion 22 in the left-right direction, and is formed in the guide groove 222. After the convex portion 351 of the jacket gripping member 30 is guided by the guide groove 222, the convex portion 351 of the jacket gripping member 30 enters the engagement hole 223, so that the jacket gripping member 30 is fixed to the fixing portion 20. Will be.

  A discharge groove 224 is formed in each side portion 22. The discharge groove 224 is a portion that discharges the fibrous strength member 7 of the round cable 5 to the outside of the fixed portion 20 (see below: see FIG. 6A). The discharge groove 224 is a cut-out portion formed downward from the upper edge of the side portion 22.

  A mooring portion 225 is formed on each side portion 22. The mooring part 225 is a part that wraps the fibrous strength member 7 of the round cable 5 (see below: see FIG. 6B) and fastens the outer gripping member 30 and the round cable 5 to the fixing part 20. The mooring part 225 is formed to protrude from the outer surface of the side part 22 to the left and right outer sides. The mooring part 225 is disposed in front of the discharge groove 224.

  Mooring grooves 225 </ b> A are formed above and below the mooring portion 225. By disposing the wound fibrous strength member 7 in the mooring groove 225A, the fibrous strength member 7 can be prevented from being unwound. A portion between the upper and lower mooring grooves 225 </ b> A and the mooring groove 225 </ b> A becomes a winding portion 225 </ b> B around which the fibrous strength member 7 is wound.

  The insertion member 14 is a member that opens and closes a gap in a mechanical splice portion (not shown) of the optical connector body 10. An insertion hole is formed in the upper surface of the optical connector body 10, and an insertion piece (wedge: not shown) extending from the lower side of the insertion member 14 is inserted into the insertion hole.

  The jacket gripping member 30 is a member that grips the jacket of the rectangular cable 3. The jacket gripping member 30 of this embodiment can also grip the round cable 5. The shape of the jacket gripping member 30 will be described later.

  The cover 40 is a member that prevents the outer gripping member 30 housed in the fixed portion 20 from coming off. The cover 40 includes a main body portion 41 and a holding portion 42.

The main body portion 41 is a cylindrical portion, and is a portion that is fixed to the fixing portion 20 while covering the fixing portion 20. The main body 41 has a mounting portion 411. The attachment part 411 is a part for attaching the cover 40 to the fixed part 20. The attachment portion 411 has an introduction groove 411A and a latch receiving portion 411B. The introduction groove 411 </ b> A is an L-shaped groove formed to introduce the locking protrusion 24 of the fixed portion 20. The latch receiving part 411B is a part formed at the end part of the introduction groove 411A, and is a part that hooks and fixes the latching convex part 24 of the fixing part 20. Since the locking projection 24 of the fixing portion 20 is hooked on the locking receiving portion 411B at the end of the L-shaped introduction groove 411A, the cover 40 is rotated when the cover 40 is attached to the fixing portion 20. .
A recess 412A is formed in the front edge 412 of the main body 41. As will be described later, the recess 412A is a part for discharging the fibrous strength member 7 wound around the anchoring part 225 to the outside (see FIG. 6C).

  The restraining portion 42 is a portion that restrains the outer gripping member 30 accommodated in the fixing portion 20 from the rear side. The holding part 42 is a substantially disk-shaped part formed at the rear edge of the cylindrical main body part 41. The front surface of the holding portion 42 faces at least a part of the rear end of the jacket gripping member 30 to prevent the rear gripping member 30 from coming off. An insertion hole 42A for inserting the optical cable is formed in the center of the holding portion 42.

The procedure for incorporating the optical connector 100 into the terminal of the rectangular cable 3 is as follows.
First, the operator causes the jacket gripping member 30 to grip the jacket of the rectangular cable 3 (see FIG. 2A). At this time, the operator removes the covering of the end portion of the optical fiber 4 led out from the rectangular cable 3 and cuts the end portion of the optical fiber 4. As a result, the optical fiber 4 having a predetermined size (the bare optical fiber portion 4A and the covering portion 4B) extends forward from the outer gripping member 30, and the optical fiber 4 having the predetermined size is an end portion of the optical fiber 4. Provided. Next, the worker inserts the jacket gripping member 30 that grips the square cable 3 from the insertion port 23 of the fixing unit 20. At this time, when the jacket gripping member 30 is inserted into the fixed portion 20 while guiding the convex portion 351 of the jacket gripping member 30 along the guide groove 222 of the fixed portion 20, the optical fiber 4 of the rectangular cable 3 is The optical connector body 10 is inserted into the alignment groove of a mechanical splice (not shown). When the jacket gripping member 30 is inserted into the fixed portion 20 until the convex portion 351 of the jacket gripping member 30 enters the engagement hole 223 of the fixed portion 20, the end face of the built-in fiber and the optical fiber 4 of the square cable 3 The end face is abutted on the alignment groove, and the optical fiber 4 of the square cable 3 is slightly bent. The operator causes the convex portion 351 of the outer cover gripping member 30 to enter the engagement hole 223 of the fixing portion 20 and fixes the outer gripping member 30 to the fixing portion 20, and then the optical fiber 4 of the rectangular cable 3 is bent. After confirming that this is the state, the insertion member 14 is removed from the optical connector main body 10, and the built-in fiber and the optical fiber 4 of the rectangular cable 3 are fixed by the mechanical splice portion. In addition, the operator moves the cover 40 forward while aligning the locking protrusion 24 of the fixed portion 20 with the introduction groove 411A of the cover 40, and then rotates the cover 40 relative to the fixed portion 20 to lock it. The cover 40 is attached to the fixed portion 20 by hooking the locking convex portion 24 on the receiving portion 411B. Note that the cover 40 may be attached before the insertion member 14 is removed, or may be attached after the insertion member 14 is removed.

<Outer gripping member 30>
4A and 4B are perspective views of the envelope gripping member 30. FIG. In FIG. 4A, the rectangular cable 3 gripped by the jacket gripping member 30 is virtually shown by a two-dot chain line. Similarly, in FIG. 4B, the round cable 5 is virtually shown by a two-dot chain line.

  In the description of the outer covering member 30, each direction is defined as shown in FIG. 4A. That is, let the optical axis direction of the optical fiber 4 be a “longitudinal direction”. The opposing direction of the pair of side wall portions 32 is referred to as “width direction”. In addition, a direction perpendicular to the longitudinal direction and the width direction is defined as an up-down direction. When the outer gripping member 30 is attached to the fixing portion 20 of the optical connector body 10, the longitudinal direction is parallel to the front-rear direction of FIG. 1A regardless of whether the rectangular cable 3 or the round cable 5, and the width direction is the figure. 1A is parallel to the left-right direction, and the vertical direction in FIG. 4A is parallel to the vertical direction in FIG. 1A.

As can be understood by comparing FIG. 4A and FIG. 4B, in the rectangular cable 3 and the round cable 5, the jacket member 30 is used by reversing the longitudinal direction (front-rear direction). In the following description, with respect to the longitudinal direction, the side on which the jacket portion of the rectangular cable 3 is accommodated is referred to as a “square sheath housing side”, and the side on which the sheath portion of the round cable 5 is accommodated is “round. It may be referred to as “mold outer casing side”.
Moreover, as can be understood by comparing FIG. 2A and FIG. 3, in the rectangular cable 3 and the round cable 5, the jacket member 30 is used by reversing the vertical direction. In the following description, with respect to the vertical direction, the side of the bottom wall portion 31 of the covering member 30 having a U-shaped cross section may be referred to as “bottom side” and the opposite side may be referred to as “open side”.
In the case of the rectangular cable 3, the outer casing holding side of the outer casing gripping member 30 is the rear side, the bottom side of the outer casing gripping member 30 is the upper side, and the outer casing holding member 30 is the fixing portion 20 of the optical connector body 10. (See FIGS. 2A and 2B). On the other hand, in the case of the round cable 5, the outer gripping member 30 is fixed to the optical connector main body 10 with the round casing housing side of the jacket gripping member 30 as the rear side and the open side of the jacket gripping member 30 as the upper side. It attaches to the part 20 (refer FIG. 3).

  The jacket gripping member 30 has a bottom wall portion 31 and a pair of side wall portions 32, and is configured by the bottom wall portion 31 and the pair of side wall portions 32 in a U-shaped cross section. The bottom wall portion 31 and the pair of side wall portions 32 of the jacket gripping member 30 are, for example, an integrally molded product made of plastic.

  A groove-like space surrounded by the inner surfaces of the bottom wall portion 31 and the pair of side wall portions 32 is formed along the longitudinal direction. Of the groove-like space along the longitudinal direction, one end in the longitudinal direction (the rectangular outer casing accommodating side) becomes an accommodating space for accommodating the outer casing portion of the rectangular cable 3, and the other side ( The end portion on the side of the round outer casing becomes an accommodating space for accommodating the outer casing portion of the round cable 5.

  The bottom wall portion 31 is a part that forms the bottom of the jacket gripping member 30 along the longitudinal direction. The bottom wall portion 31 is a rectangular plate-like portion that is long in the longitudinal direction.

  A slit 31A is formed in the bottom wall portion 31 along the front-rear direction. The slit 31 </ b> A is formed at an end portion on the opposite side (round outer casing accommodating side) to the first accommodating portion 33 side (square outer casing accommodating side), and the slit 31 </ b> A is formed at the end of the bottom wall portion 31. Is open. By forming the slit 31 </ b> A in the bottom wall portion 31, the optical fiber 4 bent at the time of butting can be released from the slit 31 </ b> A, and the bending of the optical fiber 4 can be moderated.

  The side wall part 32 is a part which comprises the side surface of the jacket holding member 30 along a longitudinal direction. The side wall part 32 is a rectangular plate-shaped part long in the longitudinal direction. The side wall 32 is a part formed so as to rise from both edges in the width direction of the bottom wall 31. A pair of side wall part 32 is arrange | positioned at intervals so that it may oppose in the width direction. The inner surfaces of the pair of side wall portions 32 are surfaces constituting the first housing portion 33 and the second housing portion 34. The outer surface of the side wall portion 32 is a surface that is pressed inward from the side portion 22 of the fixed portion 20.

  The jacket gripping member 30 includes a first housing part 33, a second housing part 34, and a central part 35. The first housing portion 33, the second housing portion 34, and the central portion 35 are all configured in a U-shaped cross section by the bottom wall portion 31 and the pair of side wall portions 32.

  The 1st accommodating part 33 is a site | part for accommodating the jacket part of the square cable 3 (refer FIG. 4A). The first housing part 33 is a part formed at the end of one side (the square-shaped jacket housing side) in the longitudinal direction of the jacket gripping member 30. The 1st accommodating part 33 also becomes a site | part through which the optical fiber 6 of the round cable 5 is penetrated (refer FIG. 4B).

  A gripping claw 331 is formed on the inner surfaces of the pair of side wall portions 32 constituting the first housing portion 33. The gripping claws 331 are portions (gripping portions) for biting into the outer sheath of the rectangular cable 3 and fixing (gripping) the rectangular cable 3 to the outer gripping member 30. When the gripping claws 331 bite into the outer cover of the rectangular cable 3, the rectangular cable 3 is less likely to be displaced in the longitudinal direction with respect to the outer cover holding member 30. Note that the gripping portion that grips the optical cable is not limited to the shape of the gripping claws 33.

  The gripping claws 331 are ridges that protrude inward from the inner surface of the side wall portion 32 and extend in the vertical direction. The grip claw 331 is formed in a substantially triangular cross section so that the protruding side (inner side) is sharp when viewed from the vertical direction. In other words, the gripping claws 331 are formed so as to protrude inward so that the width (width in the longitudinal direction) gradually decreases. The ridge line of the gripping claw 331 is parallel to the vertical direction. Thereby, it becomes easy to push the rectangular cable 3 into the first accommodating portion 33 from the open side to the bottom side, and the rectangular cable 3 accommodated in the first accommodating portion 33 is not easily displaced in the longitudinal direction.

  A plurality of gripping claws 331 are arranged on each side wall portion 32 at intervals along the longitudinal direction. Each ridgeline of the plurality of gripping claws 331 is parallel to each other. The plurality of gripping claws 331 on one side wall portion 32 are arranged to face the plurality of gripping claws 331 on the other side wall portion 32. By arranging the gripping claws 331 to face each other in this manner, the gripping claws 331 can be easily bited into the outer cover of the rectangular cable 3 from both sides in the width direction.

FIG. 5A is a view of the first housing portion 33 as seen from the corner side housing housing side.
The gripping claw 331 has a main part 331A and a tapered part 331B. The main portion 331 </ b> A is a portion having a constant protrusion dimension (protrusion amount, protrusion height) from the inner surface of the side wall portion 32. The taper portion 331B is a portion that is formed on the open side of the main portion 331A, and the projecting dimension from the inner surface of the side wall portion 32 decreases as the open side. By forming the tapered portion 331B on the open side of the main portion 331A, the square cable 3 can be easily pushed into the first housing portion 33 from the open side.

  The interval W1 between the side wall portions 32 facing each other in the width direction is larger than the width W0 of the rectangular cable 3 (W1> W0). Thereby, the square cable 3 can be accommodated in the first accommodating portion 33. On the other hand, the width W2 of the gap between the gripping claws 331 facing in the width direction (the interval between the ridge lines in the main portion 331A) is smaller than the width W0 of the rectangular cable 3 (W2 <W0). Thereby, it is possible to bite the gripping claws 331 into the outer cover of the square cable 3 from both sides in the width direction.

  In the present embodiment, as shown by the dotted line in FIG. 5A, the rectangular cable 3 is pushed into the first accommodating portion 33 from the open side, and the outer casing of the rectangular cable 3 is accommodated in the first accommodating portion 33. Utilizing the fact that the width W2 of the gap between the gripping claws 331 is smaller than the width W0 of the rectangular cable 3 when the outer cover of the rectangular cable 3 is accommodated between the pair of side wall portions 32 of the first accommodating portion 33. Thus, the jacket gripping member 30 is configured such that the pair of side wall portions 32 is slightly deformed so as to fall outward with the bottom wall portion 31 as a fulcrum. Since the pair of side wall portions 32 are deformed so as to spread outward, at this stage, the amount that the gripping claws 331 bite into the outer jacket of the rectangular cable 3 is reduced, and the gripping force of the rectangular cable 3 by the outer gripping member 30 is Will be reduced. However, since the amount of biting of the gripping claws 331 is reduced, the force for pushing the rectangular cable 3 into the first housing portion 33 can be reduced, so that the work of putting the rectangular cable 3 into the outer gripping member 30 is facilitated.

FIG. 5B is an explanatory diagram of a state in which the jacket holding member 30 in which the square cable 3 is accommodated in the first accommodation portion 33 is inserted into the fixing portion 20 of the optical connector body 10.
As shown by the dotted line in FIG. 5B, the pair of side wall portions 32 of the envelope gripping member 30 has a dimension in the width direction that increases toward the square envelope housing side. In the case of the rectangular cable 3, the outer gripping member 30 is inserted into the fixing portion 20 of the optical connector main body 10 with the rectangular outer sheath housing side of the outer gripping member 30 as the rear side. The pair of side wall portions 32 spreads outward toward the rear side. For this reason, when the outer cover gripping member 30 is gradually inserted between the pair of side portions 22 of the fixing portion 20 from the rear to the front, the pair of side portions 22 of the fixing portion 20 are exposed from the left and right sides. The pair of side wall portions 32 of the gripping member 30 are gradually pressed inward. As a result, the gripping claws 331 of the jacket gripping member 30 gradually bite into the jacket of the rectangular cable 3, and the gripping force of the rectangular cable 3 by the jacket gripping member 30 gradually increases. When the outer gripping member 30 is fixed to the fixing portion 20 (when the convex portion 351 of the outer gripping member 30 enters the engagement hole 223 of the fixing portion 20), the outer gripping member 30 is square. The cable 3 can be gripped with a sufficient gripping force.

  In the present embodiment, the jacket gripping member 30 can grip two types of square cables 3 having different sizes. Specifically, the envelope gripping member 30 of the present embodiment can grip a square cable having a cross section of 3.1 mm × 2.0 mm and a small square cable having a cross section of 2.0 mm × 1.6 mm. It is. In this case, the interval W1 between the side wall portions 32 facing each other in the width direction is larger than 2.0 mm which is the width of the larger square cable. Further, the width W2 of the gap between the gripping claws 331 facing in the width direction is smaller than 1.6 mm which is the width of the smaller square cable. However, if the width W2 of the gap between the gripping claws 331 is set smaller than the width of the smaller rectangular cable, the problem that it becomes difficult to push the larger rectangular cable into the first accommodating portion 33 becomes significant. For this reason, it is particularly advantageous to configure the outer cover gripping member 30 so that the pair of side wall portions 32 can be deformed so that the outer cover gripping member 30 grips the square cables 3 having different sizes. .

  In the present embodiment, as shown in FIG. 5A, the gripping claws 331 are formed away from the bottom wall portion 31. That is, the gap between the end portion on the bottom side of the main portion 331 </ b> A of the gripping claw 331 and the inner surface of the bottom wall portion 31 is spaced apart. As a result, once the rectangular cable 3 is pushed in until the bottom surface of the rectangular cable 3 is located on the bottom side of the gripping claws 331, the rectangular cable 3 is unlikely to come off from the open side of the first housing portion 33. That is, since the outer cover is not compressed in the width direction from the gripping claws 331 in the gap X, the width of the outer cover is wider than the gap width W2 of the gripping claws 331 in order to return to the original in the gap X. Is caught on the bottom end of the gripping claw 331, and as a result, the rectangular cable 3 is hardly displaced to the open side. When the gripping claws 331 are arranged so as to face each other in the width direction, the width of the jacket (corresponding to W2) receiving pressure from the gripping claws 331 and the width of the jacket in the gap X Since the difference becomes large, the outer cover is easily caught on the end portion of the gripping claws 331, so that the rectangular cable 3 is more difficult to come off.

Further, in the present embodiment, as shown in FIG. 5B (see also FIGS. 2A and 2B), the jacket gripping member 30 is fixed to the fixing portion 20 with the bottom wall portion 31 of the jacket gripping member 30 facing upward. Will be. Thereby, since the upper side of the accommodation space between the pair of side portions 22 of the fixed portion 20 is closed by the bottom wall portion 31 of the jacket gripping member 30, the rectangular cable 3 is unlikely to be detached from the upper side. On the other hand, if the bottom wall portion 31 of the jacket gripping member 30 is on the lower side, the open side of the jacket gripping member 30 faces the upper side of the accommodation space between the pair of side portions 22 of the fixed portion 20. For this reason, the rectangular cable 3 is easily detached from the upper side.
Furthermore, in this embodiment, as shown in FIG. 5B (see also FIGS. 2A and 2B), since the bottom wall portion 31 of the jacket gripping member 30 is on the upper side, the wide side open side wall portion 32 is formed. (See FIG. 5A) can be pressed by a portion on the bottom 21 side (a portion that is difficult to deform outward) of the side portion 22 of the fixing portion 20, so that the outer cover of the rectangular cable 3 is sufficiently bited into the grip claw 331. Can do. On the other hand, if the bottom wall 31 of the jacket gripping member 30 is on the lower side, the wide side wall 32 on the open side (see FIG. 5A) is located above the side 22 of the fixed portion 20. Therefore, the side portion 22 of the fixing portion 20 is slightly deformed so as to fall outward with the bottom portion 21 as a fulcrum, and the amount of the gripping claw 331 biting into the outer cover of the rectangular cable 3 is increased by this deformation amount. It will decrease.

  In the present embodiment, as shown in FIG. 5B, a slit 31 </ b> A is formed on the front side (round casing housing side) of the bottom wall portion 31. Since the optical fiber 4 of the rectangular cable 3 bends when the optical fiber 4 is abutted, the slit 31A is formed in the bottom wall portion 31 so that the optical fiber 4 bent toward the front side in FIG. 5B is released from the slit 31A. Therefore, the curvature of the optical fiber 4 can be moderated. In the present embodiment, since the outer cover gripping member 30 is fixed to the fixed portion 20 with the bottom wall portion 31 of the cover gripping member 30 facing upward, a slit 31A is formed in the bottom wall portion 31. If the bottom wall portion 31 of the jacket gripping member 30 is on the lower side, the open side of the pair of side wall portions 32 of the jacket gripping member 30 is on the upper side. 32 can be released from the open side, and the bending of the bent optical fiber 4 can be moderated, so that the slit 31A of the bottom wall portion 31 is not necessary.

  The 2nd accommodating part 34 is a site | part for accommodating the jacket part of the round cable 5 (refer FIG. 4B). The second accommodating portion 34 is a portion formed at the end portion in the longitudinal direction on the opposite side (round outer casing accommodating side) from the first accommodating portion 33. The 2nd accommodating part 34 also becomes a site | part through which the optical fiber 4 of the square cable 3 is penetrated (refer FIG. 4A). Thereby, the jacket holding member 30 can be used also for the round cable 5 by making the front-rear direction reverse to that of the rectangular cable 3.

  Holding claws 341 are formed on the opening-side edges of the pair of side wall portions 32 constituting the second housing portion 34. The holding claw 341 is a part that prevents the round cable 5 from being detached from the open side. The holding claws 341 are formed so as to protrude inward from the open side edge of the side wall portion 32. The pair of holding claws 341 are arranged with a space narrower than the diameter of the round cable 5, and are arranged on the upper side of the round cable 5.

  In addition, the 2nd accommodating part 34 is not formed with the protruding item | line like the holding nail | claw 331 of the 1st accommodating part 33. FIG. This is because a layer of the fibrous strength member 7 is formed between the optical fiber 6 of the round cable 5 and the outer sheath, so that the outer sheath is easily deformed by the layer of the fibrous strength member 7, and the outer sheath is easily deformed. This is because a sufficient gripping force cannot be obtained even if gripped from both sides by the pair of side wall portions 32 (in contrast, the rectangular cable 3 has the outer cover for the optical fiber 4 and the tensile body at once. Since it is covered, the outer cover is harder than the outer cover of the round cable 5, and the gripping claws 331 are bitten into the outer cover and are easily gripped). For this reason, the round cable 5 is not gripped by the jacket gripping member 30 only by housing the jacket of the round cable 5 in the second housing portion 34, and the round cable 5 is not gripped by the jacket gripping member 30. It is easy to shift in the front-rear direction.

  The central portion 35 is a portion between the first housing portion 33 and the second housing portion 34. A convex portion 351, a positioning portion 352, and a discharge groove 353 are formed in the central portion 35.

  The projecting portion 351 is a projection for guiding the jacket gripping member 30 in the front-rear direction. The convex portion 351 guides the jacket gripping member 30 in the front-rear direction by matching with the guide groove 222 of the fixed portion 20. The convex portion 351 is formed only on the one side wall portion 32. Since the guide groove 222 of the fixed portion 20 is also formed only on one side portion 22, the vertical direction of the jacket gripping member 30 is specified, and the jacket gripping member 30 is erroneously inserted upside down. Can be prevented. In the present embodiment, the rectangular cable 3 and the round cable 5 use the jacket gripping member 30 with the longitudinal direction reversed, and thus a convex portion 351 is formed on one side wall 32 of the jacket gripping member 30. By forming a guide groove 222 on one side 22 of the fixed portion 20, the user is encouraged to use the jacket holding member 30 by reversing the vertical direction between the square cable 3 and the round cable 5. be able to. For this reason, according to the present embodiment, it is possible to prevent the jacket gripping member 30 from being erroneously inserted in the upside down direction even though the jacket gripping member 30 is used by reversing the vertical direction.

  The positioning part 352 is a part that contacts the lead-out part (end part of the outer cover) of the outer cover of the round cable 5. The position of the round cable 5 in the front-rear direction with respect to the jacket gripping member 30 can be adjusted by bringing the lead portion of the jacket of the round cable 5 into contact with the positioning portion 352.

  The discharge groove 353 is a portion for discharging the fibrous strength member 7 of the round cable 5 to the outside of the side wall portion 32 (see below: FIG. 6A). The discharge groove 353 is a cut-out portion formed from the open side edge of the side wall portion 32. The discharge groove 353 is formed so as to be substantially at the same position as the discharge groove 224 of the fixed portion 20 when the outer cover holding member 30 is fixed to the fixed portion 20.

  In the present embodiment, the discharge groove 353 is disposed on the optical fiber end side (square outer casing housing side) in the longitudinal direction from the positioning portion 352. Accordingly, the outer portion of the outer cover of the round cable 5 is easily brought into contact with the positioning portion 352 while the fibrous strength member 7 of the round cable 5 is discharged to the outside from the discharge groove 353. If the discharge groove 353 is arranged on the jacket side (round jacket housing side) in the longitudinal direction from the positioning part 352, the fibrous tensile body 7 extending from the lead-out part of the round cable 5 is discharged. When coming out from the groove 353, the fibrous strength member 7 is pulled toward the discharge groove 353, and the lead-out portion of the round cable 5 moves toward the discharge groove 353, which causes the round cable 5 to be round. Since it moves to the mold jacket housing side, the lead-out portion of the jacket of the round cable 5 is separated from the positioning portion 352 (as a result, the position of the round cable 5 in the front-rear direction is easily displaced). .

  By the way, as shown in FIG. 3, as described above, the round cable 5 can be removed from the outer cover holding member 30 only by storing the outer cover of the round cable 5 in the second receiving portion 34 of the outer cover holding member 30. It is easy to shift in the front-rear direction. Therefore, after the outer casing of the round cable 5 is accommodated in the second accommodating portion 34, the round cable 5 is fixed to the optical connector body 10 as described below.

  6A to 6C are explanatory views showing a state in which the optical connector main body 10 is assembled to the terminal of the round cable 5.

  The operator accommodates the outer sheath of the round cable 5 in the second accommodating portion 34 of the outer sheath holding member 30 (see FIG. 3), and then from the insertion port 23 on the rear side of the fixing portion 20 of the optical connector body 10. The jacket gripping member 30 is inserted. In the case of the round cable 5, the jacket gripping member 30 is inserted into the fixed portion 20 with the round jacket housing side of the jacket gripping member 30 as the rear side. The operator inserts the outer gripping member 30 into the fixing portion 20 until the convex portion 351 of the outer gripping member 30 enters the engaging hole 223 of the fixing portion 20, and causes the convex portion 351 to enter the engaging hole 223. The outer gripping member 30 is fixed to the fixing portion 20. When the jacket gripping member 30 is fixed to the fixed portion 20, the discharge groove 353 of the jacket gripping member 30 and the discharge groove 224 of the fixed portion 20 are arranged at substantially the same position. As shown in FIG. 6A, the operator discharges the fibrous strength member 7 of the round cable 5 to the outside from the discharge groove 353 of the jacket gripping member 30 and the discharge groove 224 of the fixing portion 20. At this time, since the discharge groove 353 is disposed on the front side of the positioning portion 352, even if the fibrous strength member 7 extending from the lead-out portion of the round cable 5 is pulled toward the discharge groove 353, the round shape Contact between the lead-out portion (end portion of the jacket) of the cable 5 and the positioning portion 352 is maintained. However, at this stage, the round cable 5 is in a state where it can be easily pulled out rearward with respect to the outer gripping member 30.

  Next, as shown in FIG. 6B, the operator winds the fibrous strength member 7 around the mooring portion 225 of the side portion 22 of the fixing portion 20. Thereby, since the round cable 5 is fastened to the fixing portion 20, it is possible to prevent the round cable 5 from coming off from the jacket holding member 30 or the fixing portion 20.

By the way, as a method of tying the round cable 5 to the fixing portion 20, instead of winding the fibrous strength member 7 around the anchoring portion 225 of the fixing portion 20, the fibrous strength member 7 is interposed between the fixing portion 20 and the cover 40. There is a way to pinch. For example, a configuration in which the fixing portion 20 and the cover 40 are fitted together, or a male screw portion formed in the fixing portion 20 and a female screw portion formed in the cover 40 are screwed together so that the fixing portion 20 and the cover 40 are screwed together. In the case of adopting a configuration for fastening, the round cable 5 is fixed to the fixed portion 20 by sandwiching (tightening) the fibrous strength member 7 between the outer peripheral surface of the fixed portion 20 and the inner peripheral surface of the cover 40. Can be tied to However, in the configuration in which the fibrous strength member 7 is sandwiched between the fixing portion 20 and the cover 40, it is difficult for an operator to grasp the tension applied to the fibrous strength member 7, and thus the force that holds the round cable 5 to the fixing portion 20. Difficult to adjust.
On the other hand, in this embodiment, since the operator can wind the fibrous strength member 7 around the anchoring portion 225 while adjusting the tension applied to the fibrous strength member 7, the round cable 5 is attached to the fixing portion 20. The holding force can be adjusted.

  In the present embodiment, as shown in FIG. 6B, the fibrous strength members 7 discharged from the left and right discharge grooves 224 intersect at the lower surface of the fixing portion 20, and the mooring portion on the opposite side to the discharge groove 224 side. It is wound around 225. Thereby, the round cable 5 can be firmly connected to the fixing portion 20. Further, in the present embodiment, since the cross mark 25 is formed on the lower surface of the fixed portion 20, it is possible to prompt the operator to cross the fibrous strength member 7 on the lower surface of the fixed portion 20.

  Next, the worker attaches the cover 40 to the fixed portion 20 as shown in FIG. 6C. At this time, as shown in FIG. 6C, the operator discharges the end portion of the fibrous strength member 7 wound around the anchoring portion 225 from the recess 412A of the front edge 412 of the cover 40 to the outside. By discharging the fibrous strength member 7 from the recess 412A, the fibrous strength member 7 is sandwiched between the front edge 412 of the cover 40 and the anchoring portion 225, and between the front edge 412 of the cover 40 and the anchoring portion 225. Since it is possible to prevent a gap from being formed on the locking projection 24 of the fixed portion 20, the locking receiving portion 411 </ b> B of the cover 40 can be easily hooked.

  Thereafter, the operator cuts the end of the fibrous strength member 7 extending from the recess 412A. Since the fibrous strength member 7 wound around the anchoring portion 225 is restrained by the front edge 412 of the cover 40, the fibrous strength member 7 is anchored even if the fibrous strength member 7 extending from the recess 412A is cut. Difficult to solve from part 225. In order to make it easier to restrain the fibrous strength member 7 wound around the mooring portion 225 by the front edge 412 of the cover 40, a dimension H1 between the upper and lower mooring grooves 225A and the mooring groove 225A (see FIG. 2A enlarged view: winding) The vertical dimension of the portion 225B is desirably larger than the vertical dimension H2 (see FIG. 6B) of the recess 412A of the cover 40 (H1> H2).

<Summary>
According to the above-described embodiment, the optical connector 100 grips the outer cover of the rectangular cable 3 accommodated between the pair of side wall portions 32 provided with the gripping claws 331 (grip portions) on the inner surface by the gripping claws 331. The outer gripping member 30 and the optical connector main body 10 having the fixing portion 20 into which the outer gripping member 30 can be inserted are provided. As shown in FIGS. 5A and 5B, the jacket gripping member 30 is configured to deform so as to spread outward when the jacket of the rectangular cable 3 is accommodated between the pair of side wall portions 32. Yes. For this reason, since the force which pushes in the square cable 3 may be small, the operation | work which puts the square cable 3 in the jacket holding member 30 is easy. In addition, when the outer gripping member 30 is inserted into the fixing portion 20, the outer surfaces of the pair of side wall portions 32 are pressed by the fixing portion 20 and deformed inward, whereby the rectangular cable 3 is deformed. It is configured to be retained. Thereby, the jacket gripping member 30 can bite the gripping claws 331 (grip portions) into the jacket of the rectangular cable 3, and can grip the rectangular cable 3 with a sufficient gripping force. Even if a pulling force is applied to the cable 3, the square cable 3 can be fastened to the jacket gripping member 30. As described above, in this embodiment, the rectangular cable 3 is sufficiently held and fixed to the fixing portion 20 of the optical connector body 10 while facilitating the work of putting the rectangular cable 3 into the outer cover holding member 30. Can be made.

  Note that the jacket gripping member 30 is configured to be deformed so as to spread outward toward the rear side when the pair of side wall portions 32 accommodates the jacket of the rectangular cable 3. On the other hand, the fixing | fixed part 20 is comprised so that the jacket holding member 30 may be inserted between a pair of side parts 22 from a rear side to the front side, as shown to FIG. 5B. For this reason, when the jacket gripping member 30 is gradually inserted between the pair of side portions 22 of the fixed portion 20, the inner surfaces of the pair of side portions 22 of the fixed portion 20 are the pair of side walls of the jacket gripping member 30. The outer surface of the portion 32 is gradually pressed inward. For this reason, the operation | work which inserts the jacket holding member 30 in the inside of the fixing | fixed part 20 becomes easy.

  Further, according to the present embodiment, as shown in FIG. 5A, the jacket gripping member 30 is configured in a U-shaped cross section by the bottom wall portion 31 and the pair of side wall portions 32. Thereby, as shown to FIG. 5A, a pair of side wall part 32 can be deform | transformed so that it may fall outside using the bottom wall part 31 as a fulcrum.

  Further, according to the present embodiment, as shown in FIG. 5A, a gap X is formed between the bottom side (bottom wall portion 31 side) end of the gripping claw 331 and the inner surface of the bottom wall portion 31. ing. As a result, once the rectangular cable 3 is pushed in until the bottom surface of the rectangular cable 3 is located on the bottom side of the gripping claw 331, the outer cover having a wide width in the gap X is caught on the bottom side end of the gripping claw 331. Therefore, the rectangular cable 3 is difficult to come off.

  Further, according to the present embodiment, as shown in FIG. 5B (see also FIGS. 2A and 2B), the jacket gripping member 30 has the bottom wall portion 31 on the upper side (the open side of the fixing portion 20 having a U-shaped cross section). ) Toward the fixing part 20. Thereby, since the upper side of the accommodation space between the pair of side portions 22 of the fixed portion 20 is closed by the bottom wall portion 31 of the jacket gripping member 30, the rectangular cable 3 is unlikely to be detached from the upper side.

  Further, according to the present embodiment, as shown in FIG. 5B, the slit 31 </ b> A is formed on the front side of the bottom wall portion 31 of the jacket gripping member 30. As a result, the optical fiber 4 bent toward the front side in FIG. 5B when the optical fiber 4 is abutted can be released from the slit 31A, and the bending of the optical fiber 4 can be made gentle.

  Further, according to the present embodiment, as shown in FIGS. 4A and 4B, the jacket gripping member 30 can be used for both the square cable 3 and the round cable 5 by reversing the front-rear direction. Thereby, it is not necessary to prepare a dedicated jacket gripping member 30 for each type of optical cable.

  In addition, according to the present embodiment, the convex portion 351 is formed only on one side wall portion 32 of the pair of side wall portions 32 of the jacket gripping member 30, and the pair of side portions 22 of the fixed portion 20 are also formed. A guide groove 222 is formed only on one of the side portions 22. Thereby, since the user can be urged to turn the outer cover holding member 30, the outer cover holding member 30 can be prevented from being erroneously inserted in the reverse direction.

  Further, according to the present embodiment, as shown in FIG. 4B, the discharge groove 353 is arranged on the optical fiber end side of the round cable 5 with respect to the positioning portion 352. Accordingly, the outer portion of the outer cover of the round cable 5 is easily brought into contact with the positioning portion 352 while the fibrous strength member 7 of the round cable 5 is discharged to the outside from the discharge groove 353.

  Moreover, according to this embodiment, as shown to FIG. 6B, the fixing | fixed part 20 has the mooring part 225 which winds the fibrous tensile strength body 7. As shown in FIG. Thereby, even if the round cable 5 cannot be gripped by the jacket gripping member 30, the round cable 5 can be fastened to the fixed portion 20, and the round cable from the jacket gripping member 30 or the fixed portion 20 can be secured. 5 can be prevented from falling out. Moreover, according to this embodiment, since the fibrous strength body 7 can be wound around the mooring portion 225 while adjusting the tension applied to the fibrous strength body 7, the force for retaining the round cable 5 on the fixing portion 20 is adjusted. The structure is easy to do.

  In addition, according to the present embodiment, as shown in FIGS. 6B and 6C, when the cover 40 is attached to the fixed portion 20, the fibrous strength body 7 wound around the anchoring portion 225 is suppressed by the front edge 412 of the cover 40. It is done. Thereby, the fibrous tensile strength body 7 wound around the mooring part 225 becomes difficult to unravel.

  Further, according to the present embodiment, as shown in FIG. 6B, the front edge 412 of the cover 40 is formed with a recess 412A. As a result, as shown in FIG. 6C, the end portion of the fibrous strength member 7 wound around the mooring portion 225 can be discharged to the outside from the concave portion 412 </ b> A of the front edge 412 of the cover 40.

=== Another Embodiment ===
In the above-described embodiment, the jacket gripping member 30 is configured to accommodate both the square cable 3 and the round cable 5. However, the jacket gripping member 30 may be configured to grip only the square cable 3. In this case, the outer gripping member 30 may not include the second housing portion 34, and may not include the positioning portion 352 and the discharge groove 353. As described above, even when the jacket gripping member 30 is configured to grip only the rectangular cable 3, the pair of side walls when the jacket gripping member 30 accommodates the jacket of the rectangular cable 3 is used. If the rear side of the portion 32 is configured to spread outward (see FIGS. 5A and 5B), the square cable 3 can be inserted into the outer gripping member 30 because less force is required to push the square cable 3. Work becomes easy.

  Further, in the above embodiment, the fixing portion 20 of the optical connector main body 10 is configured to be compatible with both the square cable 3 and the round cable 5. However, the fixing portion 20 may be configured to correspond only to the square cable 3. In this case, the fixing part 20 may not include the discharge groove 224 or the mooring part 225. As described above, even when the fixing portion 20 of the optical connector main body 10 is configured to correspond only to the rectangular cable 3, the outer gripping member 30 is moved from the rear side to the front side between the pair of side portions 22. When inserting, if the inner surfaces of the pair of side portions 22 of the fixed portion 20 gradually press the outer surfaces of the pair of side wall portions 32 of the outer cover gripping member 30 inward, the gripping claws 331 are moved to the outer cover of the rectangular cable 3. The square cable 3 can be gripped with a sufficient gripping force.

  The jacket holding member 30 and the optical connector main body 10 may be configured to correspond only to the round cable 5. In this case, it is desirable that the jacket gripping member 30 includes the positioning portion 352 and the discharge groove 353. Moreover, it is desirable that the fixing portion 20 of the optical connector body 10 includes a discharge groove 224 and a mooring portion 225. Thereby, even if the round cable 5 cannot be gripped by the jacket gripping member 30, the round cable 5 can be tied to the fixed portion 20. Further, if the fibrous strength member 7 can be wound around the mooring portion 225, the structure for easily adjusting the force that holds the round cable 5 to the fixing portion 20 is obtained.

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

3 square cable, 4 optical fiber,
4A Bare optical fiber part, 4B coating part,
5 round cable, 6 optical fiber, 7 fibrous tensile body,
10 optical connector body, 11 front housing (plug frame),
12 rear housing (stop ring), 14 insertion member,
20 fixed part, 21 bottom part, 22 side part,
221 claw portion, 222 guide groove, 223 engagement hole,
224 discharge groove, 225 mooring part,
225A mooring groove, 225B winding part,
23 insertion slot, 24 locking projection, 25 cross mark,
30 outer gripping member, 31 bottom wall, 31A slit,
32 side wall parts, 33 1st accommodating part,
331 gripping claw, 331A main part, 331B taper part,
34 2nd accommodating part, 341 holding nail,
35 central part, 351 convex part,
352 positioning part, 353 discharge groove,
40 cover, 41 body,
411 mounting portion, 411A introduction groove, 411B locking receiving portion,
412 front edge, 412A recess,
42 holding part, 42A insertion hole,
100 optical connector (on-site assembly type optical connector)

Claims (12)

A jacket gripping member having a pair of side wall portions provided on the inner surface with a grip portion for gripping the jacket of the first optical cable, and gripping the jacket of the optical cable accommodated between the pair of side wall portions by the grip portion When,
An optical connector main body having a fixing part capable of inserting and fixing the jacket holding member therein;
The jacket gripping member is configured to deform so as to spread outward when the jacket of the first optical cable is accommodated between the pair of side wall portions,
When the outer gripping member is inserted into the fixing portion, the outer surfaces of the pair of side wall portions are pressed by the fixing portion and deformed inward, whereby the first optical cable is held by the outer gripping member. Is configured as
The jacket gripping member has a second housing portion that houses a jacket of a second optical cable having an outer shape different from that of the first optical cable, in addition to the first housing portion that houses the jacket of the first optical cable. And
When the optical axis direction of the first optical cable is the front-rear direction, the outer gripping member in which the outer sheath of the first optical cable is accommodated in the first accommodating portion is inserted into the fixing portion, and the second The outer gripping member is placed in the opposite direction in the front-rear direction when the outer gripping member in which the outer sheath of the second optical cable is accommodated in the accommodating portion is inserted into the fixing portion. connector. The optical connector according to claim 1,
The said outer covering member has a bottom wall part, and is comprised by the cross-section U-shape by the said bottom wall part and said pair of side wall part, The optical connector characterized by the above-mentioned. The optical connector according to claim 2,
An optical connector, wherein a gap is formed between an end portion of the grip portion on the side of the bottom wall portion and an inner surface of the side wall portion. The optical connector according to claim 2 or 3,
The fixing portion is configured in a U-shaped cross section by a bottom portion and a pair of side portions,
The optical connector is characterized in that the jacket gripping member is inserted into the fixed portion with the bottom wall portion side facing the open side of the fixed portion having a U-shaped cross section. The optical connector according to claim 4,
An optical connector characterized in that a slit is formed in the bottom wall portion. The optical connector according to claim 1,
A convex portion is formed on one side wall portion of the pair of side wall portions of the jacket gripping member,
An optical connector, wherein a guide portion for guiding the convex portion in the front-rear direction is formed on one side portion of the pair of side portions of the fixed portion. A jacket having a pair of side wall portions provided on the inner surface with a grip portion for gripping the jacket of the first optical cable, and gripping the jacket of the first optical cable accommodated between the pair of side wall portions by the grip portion. A gripping member;
An optical connector main body having a fixing part capable of inserting and fixing the jacket holding member therein;
The jacket gripping member is configured to deform so as to spread outward when the jacket of the first optical cable is accommodated between the pair of side wall portions,
When the outer gripping member is inserted into the fixing portion, the outer surfaces of the pair of side wall portions are pressed by the fixing portion and deformed inward, whereby the first optical cable is held by the outer gripping member. Is configured as
The jacket gripping member is configured to accommodate a round second optical cable having an outer shape different from that of the first optical cable, in which a fibrous tensile body is disposed between the optical fiber and the jacket.
When the optical axis direction of the first optical cable is the front-rear direction, the jacket holding member that houses the jacket of the first optical cable is inserted into the fixing portion, and the jacket of the second optical cable is housed When the outer gripping member is inserted into the fixed portion, the outer gripping member is opposite in the front-rear direction,
The jacket gripping member has a positioning part that comes into contact with an end of the jacket of the second optical cable, and a discharge groove that discharges the fibrous tensile body to the outside.
The optical connector is characterized in that the discharge groove is arranged on the optical fiber end side of the second optical cable with respect to the positioning portion. The optical connector according to claim 7 ,
The optical connector is characterized in that the fixing portion has a mooring portion around which the fibrous tensile body is wound. The optical connector according to claim 8,
The optical connector has a cover for holding the outer cover holding member inserted into the fixed portion from the rear side,
When the cover is attached to the fixing portion, the fibrous tensile body wound around the anchoring portion is suppressed by the front edge of the cover. The optical connector according to claim 9, wherein
A concave portion is formed in the front edge of the cover. A jacket having a pair of side wall portions provided on the inner surface with a grip portion for gripping the jacket of the first optical cable, and gripping the jacket of the first optical cable accommodated between the pair of side wall portions by the grip portion. Preparing a gripping member and an optical connector body having a fixing portion capable of inserting and fixing the jacket gripping member therein;
Accommodating the first optical cable between the pair of side wall portions of the jacket gripping member and deforming the jacket gripping member so as to spread outward; and
Inserting the outer gripping member into the fixing portion, and pressing the outer surfaces of the pair of side wall portions by the fixing portion to deform the optical cable to the outer gripping member;
An optical connector manufacturing method for performing
The jacket gripping member has a second housing portion that houses a jacket of a second optical cable having an outer shape different from that of the first optical cable, in addition to the first housing portion that houses the jacket of the first optical cable. And
When the optical axis direction of the first optical cable is the front-rear direction, the outer gripping member in which the outer sheath of the first optical cable is accommodated in the first accommodating portion is inserted into the fixing portion, and the second The outer gripping member is placed in the opposite direction in the front-rear direction when the outer gripping member in which the outer sheath of the second optical cable is accommodated in the accommodating portion is inserted into the fixing portion. Connector manufacturing method. A jacket having a pair of side wall portions provided on the inner surface with a grip portion for gripping the jacket of the first optical cable, and gripping the jacket of the first optical cable accommodated between the pair of side wall portions by the grip portion. Preparing a gripping member and an optical connector body having a fixing portion capable of inserting and fixing the jacket gripping member therein;
Accommodating the first optical cable between the pair of side wall portions of the jacket gripping member and deforming the jacket gripping member so as to spread outward; and
Inserting the outer gripping member into the fixing portion, and pressing the outer surfaces of the pair of side wall portions by the fixing portion to deform the optical cable to the outer gripping member;
An optical connector manufacturing method for performing
The jacket gripping member is configured to accommodate a round second optical cable having an outer shape different from that of the first optical cable, in which a fibrous tensile body is disposed between the optical fiber and the jacket.
When the optical axis direction of the first optical cable is the front-rear direction, the jacket holding member that houses the jacket of the first optical cable is inserted into the fixing portion, and the jacket of the second optical cable is housed When the outer gripping member is inserted into the fixed portion, the outer gripping member is opposite in the front-rear direction,
The jacket gripping member has a positioning part that comes into contact with an end of the jacket of the second optical cable, and a discharge groove that discharges the fibrous tensile body to the outside.
The method for manufacturing an optical connector, wherein the discharge groove is disposed on an optical fiber end side of the second optical cable with respect to the positioning portion.

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