CN111263907A - Optical connector, holding member, and method for manufacturing optical connector - Google Patents
Optical connector, holding member, and method for manufacturing optical connector Download PDFInfo
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- CN111263907A CN111263907A CN201880069068.1A CN201880069068A CN111263907A CN 111263907 A CN111263907 A CN 111263907A CN 201880069068 A CN201880069068 A CN 201880069068A CN 111263907 A CN111263907 A CN 111263907A
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- optical
- cover
- optical cable
- main body
- optical connector
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
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- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The present invention relates to an optical connector, a holding member, and a method for manufacturing an optical connector, which improve holding force of an optical cable. Provided is an optical connector, comprising: a holding member that holds an optical cable having an outer coating layer covering the optical fiber; and a housing having a fixing portion for fixing the holding member, wherein the holding member includes: a main body portion having a pair of side wall portions with protrusions formed on an inner surface thereof; and a cover attached to the main body and configured to slide with respect to the main body, whereby an outer surface of the side wall portion is pressed by an inner surface of the cover, the protrusion bites into the outer coating layer of the optical cable, and the holding member holds the optical cable.
Description
Technical Field
The invention relates to an optical connector, a holding member, and a method of manufacturing the optical connector.
Background
As a device for connecting optical fibers by butting end faces of the optical fibers against each other, for example, a field-assembled optical connector is known. The field-assembled optical connector is an optical connector having a structure that can be easily assembled to the end of an optical cable in an optical fiber installation field. The ferrule of the optical connector before assembly is previously provided with a built-in fiber in a factory, and the end of the built-in fiber is disposed in the mechanical splice. In an assembly work site, an outer coating gripping member grips an outer coating of an optical cable, and an end portion of an inserted fiber drawn from the optical cable is inserted into a mechanical connection portion, and optical fibers are butt-connected to each other in the mechanical connection portion.
Patent document 1 describes a structure of an outer cover gripping member used for an optical connector to be assembled in situ. In the outer cover gripping member described in patent document 1, gripping protrusions are formed on the surfaces of the pair of side walls facing each other, and the gripping protrusions bite into the outer cover of the optical cable to grip and fix the optical cable between the pair of side walls.
Patent document 1: international publication No. 2013/129485
Conventionally, when the optical cable is gripped only by the gripping member, it is difficult to obtain a sufficient gripping force, and therefore, when the gripping member is fixed to the connector body, the gripping member is pressed by the housing of the connector body to increase the gripping force of the optical cable.
However, if the thickness of the housing becomes thinner along with the miniaturization of the optical connector, the pressing force of the housing against the holding member may become weaker, and the holding force of the optical cable may become weaker. Alternatively, if the thickness of the housing is increased in order to secure the pressing force of the housing against the holding member, it may be difficult to reduce the size of the optical connector. Therefore, it is desirable to increase the holding force of the holding member on the optical cable.
Disclosure of Invention
The invention aims to improve the holding force of a holding component on an optical cable.
The main invention for achieving the above object is an optical connector including: a holding member that holds an optical cable having an outer coating layer covering the optical fiber; and a housing having a fixing portion for fixing the holding member, wherein the holding member includes: a main body having a pair of side wall portions with a protrusion portion formed on an inner surface thereof; and a cover attached to the main body, wherein the cover is slid with respect to the main body, so that an outer surface of the side wall portion is pressed by an inner surface of the cover, the protrusion bites into the outer coating layer of the optical cable, and the holding member holds the optical cable.
Other features of the present invention will become apparent from the description of the specification and the drawings.
According to the present invention, the holding force of the holding member on the optical cable can be increased.
Drawings
Fig. 1A is a perspective view of the optical connector 100. Fig. 1B is an exploded perspective view of the optical connector 100.
Fig. 2A is a perspective view of the holding member 30, and fig. 2B is an exploded perspective view of the holding member 30.
Fig. 3A to 3C are explanatory views of the gripping member 30. Fig. 3A is a view of the gripping member 30 as viewed from above, and shows the fixing portion 152 of the rear case 15 and the cover 50 in a sectional view. Fig. 3B is an explanatory diagram of a state in which the optical fiber cord 6 is held. Fig. 3C is an explanatory diagram of a state where the optical cable 3 is held.
Fig. 4A is an explanatory diagram of an assembly method of the optical connector 100 in the case of using the round optical cable 6.
Fig. 4B is an explanatory diagram of an assembly method of the optical connector 100 in the case of using the round optical cable 6.
Fig. 4C is an explanatory diagram of an assembly method of the optical connector 100 in the case of using the round optical cable 6.
Fig. 5A is an explanatory diagram of an assembly method of the optical connector 100 in the case of using the square optical cable 3.
Fig. 5B is an explanatory diagram of an assembly method of the optical connector 100 in the case of using the square optical cable 3.
Fig. 6 is an explanatory diagram of the structure of the cover 50 of embodiment 2.
Fig. 7 is an explanatory view of the holding member 30 according to embodiment 3.
Detailed Description
At least the following matters will be apparent from the description of the specification and the drawings.
An optical connector is disclosed, which is provided with: a holding member that holds an optical cable having an outer coating layer covering the optical fiber; and a housing having a fixing portion for fixing the holding member, wherein the holding member includes: a main body having a pair of side wall portions with a protrusion portion formed on an inner surface thereof; and a cover attached to the main body, wherein the cover is slid with respect to the main body, so that an outer surface of the side wall portion is pressed by an inner surface of the cover, the protrusion bites into the outer coating layer of the optical cable, and the holding member holds the optical cable. According to such an optical connector, the holding force of the holding member on the optical cable can be increased.
Preferably, the holding member is fixed to the fixing portion by sliding the holding member relative to the fixing portion of the housing. This allows the gripping member to be pressed from the outside. This can further improve the holding force of the optical cable.
Preferably, the main body and the lid each have a lid fixing portion. Thus, the main body and the cover can be fixed in a state where the protrusion is engaged with the outer cover of the optical cable.
Preferably, the housing and the main body have engaging portions, respectively. Thus, the housing and the main body can be fixed in a state where the protrusion is engaged with the outer cover of the optical cable.
Preferably, the cover has a plurality of pieces corresponding to the types of the optical cables. This can improve the compatibility with the type of optical cable.
Preferably, the plurality of caps are formed by integral molding. This can reduce the cost.
Preferably, the main body and the lid are coupled in advance. Thus, the cap can be prevented from being lost.
Further, there is provided a holding member for holding an optical cable having an outer coating layer covering an optical fiber, the holding member comprising: a main body having a pair of side wall portions with a protrusion portion formed on an inner surface thereof; and a cover attached to the main body, the cover being slid with respect to the main body, an outer surface of the side wall portion being pressed by an inner surface of the cover, the protrusion biting into the outer coating layer of the optical cable, and the holding member holding the optical cable.
Further, there is provided an optical connector manufacturing method for assembling an optical connector by inserting a holding member holding an optical cable into a main body of the optical connector, the optical connector manufacturing method including: a main body having a pair of side wall portions with a protrusion portion formed on an inner surface thereof; and a cover attached to the body, wherein the optical connector manufacturing method includes: a step of housing the optical cable between the pair of side wall portions of the main body; and a step of sliding the cover with respect to the main body so that an inner surface of the cover presses an outer surface of the side wall portion to cause the protrusion to bite into the outer coating layer of the optical cable, thereby causing the holding member to hold the optical cable.
In the first embodiment, the following embodiments are provided
< basic Structure >
Fig. 1A is a perspective view of the optical connector 100. Fig. 1B is an exploded perspective view of the optical connector 100. In the following description, as shown in fig. 1A, the optical axis direction of an optical cable or an optical fiber is referred to as "front-back direction", the extending side of the optical cable is referred to as "back", and the opposite side (the end face side of the ferrule 11 of the optical connector 100) is referred to as "front".
The optical connector 100 of the present embodiment is a field-assembled optical connector that connects optical fibers by a mechanical splicing method, and is an optical connector assembled to the end of an optical cable. The optical connector 100 of the present embodiment is an LC-type optical connector which is smaller than the SC-type optical connector and can be mounted at high density.
The optical connector 100 includes an optical connector body 10, a holding member 30, and optical cables (a square optical cable 3 and a round optical cable 6).
The optical connector body 10 has a ferrule 11, a mechanical splice 12, a housing 13, a spring 16, and an intervening member 19.
Here, the ferrule 11 is a cylindrical-shaped ferrule for a single-core optical connector.
The mechanical splice 12 is a member (optical fiber connection device) that aligns (aligns) an embedded fiber (not shown) and an inserted fiber (the optical fiber 4 of the rectangular optical cable 3 and the optical fiber 7 of the round optical cable 6) in a shaft by a mechanical splice method and fixes the embedded fiber and the inserted fiber. The front end of the built-in fiber is inserted and fixed to the ferrule 11, and the end face is ground together with the ferrule 11. The rear end of the embedded fiber is disposed in the mechanical connecting portion 12.
The mechanical connection portion 12 has an opening 12A at the rear end. The opening 12A is an insertion port into which a fiber is inserted.
The case 13 includes a front case 14 and a rear case 15.
The front housing 14 is a portion constituting the front side of the housing 13, and has a front housing portion 14A. The front housing portion 14A is a portion that houses the front portion of the mechanical connecting portion 12.
The rear case 15 is a portion constituting the rear side of the case 13. The rear case 15 includes a rear housing portion (not shown) and a fixing portion 152.
The rear housing portion is a portion that houses a rear portion of the mechanical connecting portion 12, and is provided on the front side of the rear case 15.
The fixing portion 152 is a portion for fixing the gripping member 30, and is disposed on the rear side of the rear case 15. As shown in fig. 1A, the fixing portion 152 has an inner wall surface 15A and a locking portion 15B.
The inner wall surface 15A is a surface inside the fixing portion 152 and forms a housing space for housing the holding member 30. Therefore, the inner wall surface 15A is formed in a rectangular shape corresponding to the outer shape (rectangular shape in cross section) of the gripping member 30. The housing space is open at the rear end face of the fixing portion 152, and the holding member 30 is inserted through the opening. The inner wall surface 15A serves as a sliding surface for sliding the gripping member 30 in the front-rear direction.
When the holding member 30 is inserted into the fixing portion 152, the inner wall surface 15A presses the holding member 30 from the outside. Thus, in the case of the circular optical cable 6, the holding force of the holding member 30 to the fibrous tension member 8 is increased. Further, the force of sandwiching the fibrous tension member 8 between the main body portion 40 of the gripping member 30 and the cover 50 is increased. In the case of the rectangular optical cable 3, the side wall portions 42 (described later) of the holding member 30 are pressed inward, and the force of sandwiching the outer coating of the rectangular optical cable 3 between the side wall portions 42 is increased.
The inner wall surface 15A of the fixing portion 152 also has the following functions: the fiber-shaped tension member 8 is sandwiched between the holding member 30 (more specifically, the cap 50) and the round optical fiber cable 6.
The locking portion 15B (corresponding to an engagement portion) is formed on a side wall of the fixing portion 152. The locking portion 15B locks a claw portion 441 (described later) formed on the side wall of the gripping member 30.
The spring 16 is a member for biasing the ferrule 11 housed so as to be able to retreat forward.
The intervening member 19 opens and closes a slit of the mechanical connection portion 12 of the optical connector body 10. The optical connector body 10 is formed with an insertion hole (not shown), and a wedge portion (not shown) extending from the intervening member 19 is inserted through the insertion hole.
The holding member 30 is a member for holding the optical cable. The holding member 30 is inserted into the fixing section 152 of the optical connector body 10 in a state where it holds the optical cable. The holding member 30 of the present embodiment can hold the rectangular optical cable 3 and the circular optical cable 6 as optical cables. The structure of the gripping member 30 of the present embodiment will be described later.
The square optical cable 3 is, for example, an indoor cable, a drop cable, or the like. The square optical cable 3 is an optical cable having a square cross section in which the optical fiber 4 and the pair of linear tension members are collectively covered with an outer coating. Since the outer cover of the rectangular optical cable 3 is relatively hard, the protrusion 421 (described later) of the holding member 30 is likely to bite into the outer cover to hold the optical cable 3. In the following description, the square optical cable 3 is sometimes simply referred to as "optical cable 3".
The round optical cable 6 is an optical cable having a circular cross section in which a fibrous tension member 8 is disposed around an optical fiber 7 and is covered with an outer covering. The fibrous tensile member 8 is, for example, kevlar (registered trademark). In the following description, the round optical cable 6 is sometimes referred to as an "optical fiber cord 6". In such an optical fiber cord 6, since the outer covering layer is relatively flexible, it is difficult to hold and lock the outer covering layer like the optical cable 3. Therefore, the holding member 30 holds the fibrous tension member 8, thereby locking the optical fiber cord 6 to the optical connector 100.
< Structure of the holding member 30 >
Fig. 2A is a perspective view of the holding member 30, and fig. 2B is an exploded perspective view of the holding member 30. Fig. 3A to 3C are explanatory views of the gripping member 30. Fig. 3A is a view of the gripping member 30 as viewed from above, and shows the fixing portion 152 of the rear case 15 and the cover 50 in a sectional view. Fig. 3B is an explanatory diagram of a state in which the optical fiber cord 6 is held. Fig. 3C is an explanatory diagram of a state where the optical cable 3 is held. In the following description, the left-right direction and the up-down direction are defined as shown in the drawing. That is, the ridge direction of the projection 421 is defined as the "up-down direction", the bottom wall 41 side is defined as the "down" side, and the opposite side (open side) is defined as the up side with respect to the projection 421. In addition, a direction perpendicular to the front-rear direction and the up-down direction is referred to as a "left-right direction", a right side when the front side is viewed from the rear side is referred to as a "right", and a left side is referred to as a "left".
The gripping member 30 of the present embodiment includes a main body 40 and a cover 50.
The body portion 40 is a portion constituting a body of the grip member 30, and includes a grip portion 40A and an insertion portion 40B.
The grip 40A is a portion for gripping the optical cable 3 and the optical cord 6, and is provided on the rear side of the main body 40. The grip portion 40A has a bottom wall portion 41 and a pair of side wall portions 42.
The bottom wall 41 is a portion constituting a lower portion (bottom portion) of the grip portion 40A.
The pair of side walls 42 are erected from both left and right ends of the bottom wall 41. The pair of side wall portions 42 each have a protrusion 421, a lid claw 422, a slit 423, a grip outer surface 424, and a step portion 425.
The protrusion 421 is a protrusion (a protrusion strip) protruding inward from the facing surface (inner surface) of the side wall 42 and extending in the vertical direction. The protruding portion 421 is formed to have a substantially triangular cross section so that the protruding side (inside) is tapered when viewed from above. The ridge of the protrusion 421 is parallel to the vertical direction. The projection 421 of one side wall portion 42 is disposed to face the projection 421 of the other side wall portion 42. When the optical cable (the optical cable 3, the optical cord 6) is accommodated between the pair of side wall portions 42, the protrusion 421 bites into the outer coating of the optical cable. However, in the case of the optical fiber cord 6, the outer covering layer is relatively flexible as compared with the optical fiber cable 3 as described above, and thus it is difficult to obtain a sufficient gripping force.
The lid claw portion 422 (corresponding to a lid fixing portion) is a portion for fixing the lid 50. When the cover 50 is attached, the cover claw portion 422 engages with the engagement hole 53A of the cover 50.
The slit 423 is a groove-like portion for discharging the fibrous tension member 8 from the inside to the outside of the pair of side wall portions 42.
The grip portion outer surfaces 424 are outer surfaces of the pair of side wall portions 42. The grip portion outer surface 424 is a surface pressed against an inner surface of the cap 50 (a cap inner surface 53B described later). When pressed from the cover 50, the grip portion outer surface 424 deforms the pair of side wall portions 42 inward, and the left and right protrusions 421 bite into the outer coating of the optical cable 3 and the optical cord 6. This improves the gripping force of each optical cable (particularly, the optical cable 3). In the case of the optical fiber cord 6, the grip portion outer surface 424 is a portion that sandwiches the fibrous tension member 8 with the cover 50. The position of this portion is the outer surface of the side wall portion 42 on the front side of the slit 423 in the grip portion outer surface 424 (see fig. 3B).
The stepped portion 425 is a portion that sandwiches the fibrous tension member 8 with the distal end surface 50B of the cover 50 when the optical fiber cord 6 is gripped. A stepped portion 425 is provided at the tip of the grip portion outer surface 424. Further, a stepped portion 425 is provided between (a boundary of) the grip portion 40A and the insertion portion 42B.
The insertion portion 40B is a portion through which an optical fiber (the optical fiber 4 of the optical cable 3, the optical fiber 7 of the optical fiber cord 6) is inserted, and is provided at a position forward of the grip portion 40A. The insertion portion 40B has a bottom wall portion 43 and a pair of side wall portions 44.
The bottom wall 43 is a part continuous with the bottom wall 41 of the grip portion 40A, and constitutes a lower part (bottom) of the insertion portion 40B.
The pair of side walls 44 are erected on both left and right ends of the bottom wall 43. Further, the pair of side wall portions 44 are provided with claw portions 441 (corresponding to engagement portions).
The claw portions 441 are provided on outer surfaces of the pair of side wall portions 44, respectively. When the holding member 30 is inserted into the fixing portion 152 of the rear housing 15 of the optical connector body 10, the holding portion outer surface 424 hooks the locking portion 15B of the fixing portion 152. This enables the holding member 30 to be fixed to the optical connector body 10.
The cover 50 is a member that fits into the grip portion 40A of the body 40 and covers the grip portion 40A. The cover 50 has a cylindrical portion 50A, a front end surface 50B, and a rear plate portion 50C.
The cylindrical portion 50A is a cylindrical portion of the cap 50. The tube portion 50A of the present embodiment is formed in a square tube shape, and includes an upper plate portion 51, a bottom plate portion 52, and a pair of side plate portions 53.
The upper plate 51 is a plate-like portion constituting an upper portion of the cover 50.
The bottom plate portion 52 is a plate-like portion constituting a lower portion (bottom portion) of the cover 50.
The pair of side plates 53 are plate-shaped portions constituting both right and left side portions of the cover 50. The pair of side plate portions 53 press the pair of side wall portions 42 of the grip portion 40A from the outside. The pair of side plates 53 receives a pressing force from the inner wall surface 15A of the fixing portion 152 of the optical connector body 10 (rear housing 15).
The pair of side plate portions 53 have an engagement hole 53A (corresponding to a lid fixing portion) and a lid inner surface 53B, respectively.
The engaging hole 53A engages with the lid claw 422 of the grip portion 40A of the main body portion 40. Thereby, the cover 50 is fixed to the main body 40.
The cover inner surface 53B is a surface (inner surface) of the pair of side plate portions 53 facing each other, and is a surface that presses the outer surfaces (grip outer surfaces 424) of the pair of side wall portions 42 of the grip 40A from the outside. In this way, the cover inner surface 53B presses the grip outer surfaces 424 of the pair of side wall portions 42 of the grip 40A, thereby increasing the grip force. Further, since the holding force is increased, the pressing force from the fixing portion 152 of the housing 13 (rear side housing 15) of the optical connector body 10 can be set small, and therefore the thickness of the housing 13 (rear side housing 15) can be reduced.
In the case of the optical cable 3, the cover inner surface 53B (the inner surface of the side plate portion 53, particularly the inner surface facing the grip portion outer surface 424) presses the pair of side wall portions 42 of the grip portion 40A from the outside, and the pair of side wall portions 42 are deformed inward, so that the left and right protruding portions 421 bite into the outer coating of the optical cable 3. This improves the gripping force of the optical cable 3.
In the case of the optical fiber cord 6, a portion of the cover inner surface 53B facing the side wall portion 42 (grip portion outer surface 424) on the front side of the slit 423 is a portion that sandwiches the fibrous tension member 8 with the grip portion outer surface 424 of the main body 40 (see fig. 3B).
The inner surface of the tube portion 50A is formed in a shape conforming to the outer shape of the grip portion 40A of the body portion 40. This enables the cover 50 to slide (move in parallel) with respect to the grip portion 40A of the body portion 40. In the present embodiment, since the cylindrical portion 50A is formed in a square tube shape, the cap 50 does not rotate with respect to the grip portion 40A when the cap 50 is slid. This prevents twisting of the fibrous tension member 8.
The cover outer surface 53C is an outer surface (outer surface) of the pair of side plate portions 53, and is a surface to which a pressing force is applied from the inner wall surface 15A of the fixing portion 152 of the optical connector body 10. In the case of the optical fiber cord 6, the fibrous tension member 8 is sandwiched between the optical fiber cord and the optical connector main body 10 (the fixing portion 152 of the rear housing 15).
The front end surface 50B is an end surface on the front side of the tube portion 50A. In the case of the optical fiber cord 6, the distal end surface 50B is a portion that sandwiches the fibrous tensile member 8 with the stepped portion 425 of the main body 40.
The rear plate portion 50C is a portion on the rear side of the tube portion 50A, and has an insertion hole 55 penetrating therethrough in the front-rear direction. The insertion hole 55 is a hole for inserting the optical cable 3 and the optical fiber cord 6.
As shown in fig. 3B and 3C, the main body 40, the lid 50, and the case 13 (rear case 15) form a 1 st fitting portion 61, a 2 nd fitting portion 62, and a contact portion (folded portion) 63.
The 1 st fitting portion 61 is constituted by the grip portion outer surface 424 of the body portion 40 and the cover inner surface 53B of the cover 50. The 1 st fitting portion 61 presses (presses) the grip portion outer surface 424 from the outside by the cover inner surface 53B. Thus, in the case of the optical cable 3, the pair of side wall portions 42 are deformed inward, and the left and right protruding portions 421 bite into the outer coating of the optical cable 3. This improves the gripping force of the optical cable 3. In the case of the optical fiber cord 6, the fibrous tension member 8 is sandwiched between the grip portion outer surface 424 and the cover inner surface 53B.
The size A, X (see fig. 3A) of the 1 st fitting part 61 differs depending on the type (outer shape) of the optical cable (the rectangular optical cable 3, the circular optical cable 6). In the case of the optical fiber cord 6, the dimension A, X (see fig. 3A) of the 1 st fitting portion 61 differs according to the amount of the fibrous tensile member 8 even if the external shape is the same.
Dimension a is the length between the left and right cover inner surfaces 53B of the cover 50.
Dimension X is the length between the outer surfaces of the pair of side wall portions 42 (the left and right grip portion outer surfaces 424).
In the case of the optical cable 3, nothing is sandwiched between the cover inner surface 53B and the side wall portion 42. However, since the grip portion 40A has a substantially U-shaped cross section formed by the bottom wall portion 41 and the pair of side wall portions 42, the distance between the pair of side wall portions 42 (particularly, the upper end side) may be increased when the optical cable 3 is accommodated between the pair of side wall portions 42. In this case, since the dimension X is large, even if the dimension X and the dimension a are the same design value, the pair of side wall portions 42 can be deformed inward by attaching the cover 50. On the other hand, in the case where the distance between the pair of side wall portions 42 is not wide, the dimension a needs to be slightly smaller than the dimension X to deform the pair of side wall portions 42 inward by the cover 50.
In the case of the optical fiber cord 6, the fibrous tension member 8 is sandwiched between the grip portion outer surface 424 and the cover inner surface 53B, and therefore the appropriate dimension A, X differs depending on the amount of the fibrous tension member 8.
The 2 nd fitting portion 62 is constituted by the cover outer surface 53C and an inner surface (inner wall surface 15A) of the fixing portion 152 of the housing 13 (rear housing 15). The 2 nd fitting portion 62 is a portion that presses the gripping member 30 from the outside through the fixing portion 152 of the housing 13 (rear housing 15).
In the case of the optical fiber cord 6, the force of the 2 nd fitting part 62 that sandwiches the fibrous tensile member 8 is increased by the 2 nd fitting part 62. Further, the force of the 1 st fitting part 61 for sandwiching the fibrous tensile member 8 is increased. Further, the force of the 2 nd fitting part 62 sandwiching the fibrous tensile member 8 is increased.
In the case of the optical cable 3, the side wall portions 42 of the gripping member 30 (main body portion 40) are pressed inward by the 2 nd fitting portion 62, and the force of sandwiching the outer cover between the side wall portions 42 is increased.
The size C, Z (see fig. 3A) of the 2 nd fitting part 62 differs depending on the type (outer shape) of the optical cable (the square optical cable 3, the round optical cable 6).
Dimension C is the length between the left and right cover outer surfaces 53C of the cover 50. Half of the difference between the dimension C and the dimension a is the thickness of the side plate portion 53.
Dimension Z is the length between the left and right inner wall surfaces 15A of the fixing portion 152.
In the case of the optical cable 3, nothing is sandwiched between the cover outer surface 53C and the inner wall surface 15A of the fixing portion 152. However, the size C may become large (expanded) by causing the gripping member 30 to grip the optical fiber cable 3. In this case, even if the dimension C and the dimension Z are the same design value, the fixing portion 152 can press the gripping member 30 from the outside. On the other hand, when the dimension C is not changed, the dimension C needs to be slightly smaller than the dimension Z when the holding member 30 (the cover 50) is inserted into the fixing portion 152 and the holding member 30 is pressed from the outside by the fixing portion 152.
In the case of the optical cord 6, the appropriate dimension C, Z differs depending on the amount of the fibrous tensile member 8 because the fibrous tensile member 8 is sandwiched between the cover outer surface 53C and the inner wall surface 15A of the fixing portion 152.
The contact portion 63 (folded portion) is constituted by the stepped portion 425 of the main body portion 40 and the distal end surface 50B of the cover 50. The contact portion 63 has a function of folding back the fibrous tension member 8 between the stepped portion 425 of the main body portion 40 and the distal end surface 50B of the cover 50. This increases the locking force of the fibrous tension member 8 (the holding force of the 1 st fitting part 61 and the 2 nd fitting part 62 on the fibrous tension member 8).
The fibrous tension member 8 may be sandwiched (pressed) between the stepped portion 425 of the main body 40 and the distal end surface 50B of the cover 50. In this case, the locking force of the fibrous tension member 8 (the holding force of the 1 st fitting part 61 and the 2 nd fitting part 62 to the fibrous tension member 8) is further increased.
Since the amount of the fibrous tension member 8 varies depending on the type of the optical fiber cord 6, the appropriate size B, Y varies depending on the type of the optical fiber cord 6.
Dimension B is the length between the front end surface 50B of the cover 50 and the engagement hole 53A.
The dimension Y is a length between the stepped portion 425 of the gripping portion 40A and the lid claw portion 422.
In the case of the optical cable 3, the dimension Y may be (may be substantially the same as) slightly larger than the dimension B. In the case of the optical fiber cord 6, since the fibrous tensile member 8 is disposed (or sandwiched) between the stepped portion 425 of the main body portion 40 and the distal end face 50B of the cover 50, the appropriate dimension B, Y differs depending on the amount of the fibrous tensile member 8.
Thus, the body 40 and the cover 50 corresponding to the type of the optical cable (the square optical cable 3, the round optical cable 6) are prepared and appropriately selected for use, thereby improving the compatibility with the type of the optical cable.
In the present embodiment, in the case of the optical fiber cord 6, the portions (the 1 st fitting portion 61, the 2 nd fitting portion 62, and the abutting portion 63) that sandwich the fibrous tension member 8 are coated with an anti-slip agent that increases the frictional force. As the anti-slip agent, for example, a synthetic resin mixed with an organic solvent can be used. After the anti-slip agent is applied by spraying or the like, the resin remaining due to the volatilization of the organic solvent functions as an anti-slip. This prevents the fibrous tension member 8 from slipping, and improves the locking force.
< method of assembling optical connector 1 >
Fig. 4A, 4B, and 4C are explanatory views of an assembly method of the optical connector 100 in the case where the round optical cable 6 (optical fiber cord 6) is used. Further, only in fig. 4C, (C) is shown upside down.
In the present embodiment, the assembly tool 70 is used for assembling the optical connector 100. First, the structure of the assembly tool 70 will be briefly described.
The assembly tool 70 is a tool used when assembling the optical connector 100. The assembling tool 70 of the present embodiment corresponds to both the optical cable 3 and the optical fiber cord 6. The assembly tool 70 has a front part 80 and a rear part 90. The front member 80 and the rear member 90 are connected to each other so as to be relatively rotatable about a rotation axis (not shown).
The front member 80 has a function of holding the gripping member 30 when processing the optical fiber (the optical fiber 4 drawn from the optical cable 3, the optical fiber 7 drawn from the optical fiber cord 6).
The rear member 90 has a function of holding the optical cable when the holding member 30 is inserted into the optical connector body 10 (specifically, the fixing portion 152). Both the optical cable 3 and the optical fiber cord 6 can be held. The rear member 90 includes a cable holding portion 91 and a fibrous tension member holding portion 92.
The cable holding portion 91 is a linear groove-shaped portion into which the optical cable (the optical cable 3, the optical fiber cord 6) is inserted and held.
In the case of the optical fiber cord 6, the fibrous tensile member holding portion 92 is a groove-like portion for holding the fibrous tensile member 8 extending from the gripping member 30 (between the main body portion 40 and the cover 50). The fibrous tension member holding portions 92 are provided on both left and right sides of the clamping cable holding portion 91.
Hereinafter, an assembling method of the optical connector 100 in the case of using the round optical cable 6 (optical fiber cord 6) will be described with reference to fig. 4A, 4B, and 4C.
First, the operator inserts the optical fiber cord 6 into the insertion hole 55 of the cover 50 (fig. 4A (a)). Thus, the optical fiber cord 6 is inserted into the cover 50 (fig. 4A (b)).
Next, the operator removes the outer coating layer on the distal end side (front side) of the optical fiber cord 6, and draws out the optical fiber 7 and the fibrous tensile member 8 ((c) of fig. 4A).
Next, the operator sets the optical fiber cord 6 in the main body 40 of the holding member 30 (fig. 4A (d)). The distal end portion of the outer coating layer of the optical fiber cord 6 is housed between the pair of side wall portions 42 of the grip portion 40A of the main body portion 40, and the fibrous tensile member 8 is taken out from the inside of the side wall portion 42 to the outside of the side wall portion 42 via the slit 423 ((e) of fig. 4A). The drawn optical fiber 7 is inserted into the insertion portion 40B of the main body 40.
Next, the operator attaches the cover 50 to the grip portion 40A of the main body portion 40 ((f) of fig. 4A).
When the cover 50 is slid forward, the engagement hole 53A of the cover 50 is engaged with the cover claw portion 422 of the grip portion 40A, and the cover 50 is fixed to the main body portion 40. By attaching the cover 50, the fibrous tension member 8 is sandwiched between the grip part outer surface 424 of the main body part 40 and the cover inner surface 53B of the cover 50 (the 1 st fitting part 61: see fig. 3B). The fibrous tension member 8 is also sandwiched between the step portion 425 and the cover inner surface 53B (contact portion 63: see fig. 3B). In the present embodiment, the fibrous tension member 8 is sandwiched between the grip portion outer surface 424 of the main body portion 40 and the cover inner surface 53B of the cover 50 by sliding the cover 50 forward, and therefore the fibrous tension member 8 can be locked so as not to be twisted.
Then, the operator folds back the fibrous tension member 8 taken out from between the main body 40 and the lid 50 (toward the lid outer surface 53C).
Next, the operator attaches the optical fiber cord 6 to the rear member 90 of the assembly tool 70 (fig. 4b (a)). The optical fiber cord 6 is disposed in the cable holding portion 91 of the rear member 90, and the fibrous tensile member 8 is disposed in the fibrous tensile member holding portion 92 of the rear member 90 (fig. 4B (B)). At this time, the front member 80 of the assembly tool 70 is rotated relative to the rear member 90, and is inclined downward.
Next, the operator rotates the front member 80 upward (fig. 4B (c)), and holds the holding member 30 on the front member 80. At this time, the optical fiber 7 drawn out from the optical fiber cord 6 is projected forward beyond the front end of the front member 80. The worker removes the coating on the end of the optical fiber 7 and cuts the end of the optical fiber 7.
Next, the operator rotates the front member 80 downward to remove the front member 80 from the holding member 30. Then, the holding member 30 is inserted into the fixing portion 152 of the optical connector body 10 (fig. 4B (d)). When the insertion is continued, the claw portion 441 of the holding member 30 is hooked on the locking portion 15B of the rear housing 15, and the holding member 30 is fixed to the optical connector body 10 (fig. 4B (e)). By the insertion of the holding member 30, the end of the optical fiber 7 is inserted into the opening 12A of the mechanical splice 12, and is butted and connected to the built-in fiber of the ferrule 11.
By this insertion, the 2 nd fitting part 62 of the inner wall surface 15A of the fixing part 152 of the housing 13 (rear housing 15) and the lid outer surface 53C is formed, and the fibrous tension member 8 is sandwiched between the 2 nd fitting part 62 (between the inner wall surface 15A and the lid outer surface 53C) (see fig. 3B).
Next, the operator removes the intervention member 19 from the optical connector body 10 ((f) of fig. 4B). By pulling out the wedge portion (not shown) of the intervening member 19 to close the gap of the mechanical splice 12, the optical fiber 7 of the optical cord 6 and the internal fiber (not shown) are fixed in a state of abutting.
Next, the operator removes the assembly tool 70 (fig. 4C (a)), and cuts the fibrous tensile member 8 extending from the optical connector body 10 (fig. 4C (b)). This completes the assembly operation of the optical connector 100 (fig. 4C (C)).
< method for assembling optical connector 2 >
Fig. 5A and 5B are explanatory views of an assembly method of the optical connector 100 in the case of using the square optical cable 3 (optical cable 3). Further, it is only shown upside down in (f) of fig. 5B.
In this assembling method, an assembling tool 70 is also used.
First, the operator removes the outer coating layer at the distal end of the optical cable 3 and draws out the optical fiber 4 (fig. 5A (a)). Then, the optical cable 3 is inserted into the cover 50 through the insertion hole 55 of the cover 50 (fig. 5A (b)).
Next, the operator sets the optical cable 3 in the main body 40 (fig. 5A (c)). The tip portion of the outer coating layer of the optical cable 3 is accommodated between the pair of side wall portions 42 of the grip portion 40A of the main body portion 40. Thereby, the protrusions 421 of the pair of side walls 42 bite into the outer coating of the optical fiber cable 3, and grip the optical fiber cable 3. At this time, as described above, the interval between the pair of side wall portions 42 may be widened (the dimension X in fig. 3A may be increased). The drawn optical fiber 4 is inserted into the insertion portion 40B.
Next, the operator attaches the cover 50 to the grip portion 40A of the main body portion 40 (fig. 5A (d)). When the cover 50 is slid forward, the engagement hole 53A of the cover 50 is engaged with the cover pawl 422 of the grip portion 40A, and the cover 50 is fixed to the main body portion 40. At this time, the grip portion outer surface 424 of the body portion 40 is pressed (pressed) from the outside by the cover inner surface 53B of the cover 50, and the pair of side wall portions 42 are deformed inward. Therefore, the protrusion 421 further bites into the outer coating of the optical fiber cable 3 (bites into the outer coating to be large), thereby improving the holding force. In particular, when the gap between the pair of side wall portions 42 is widened when the optical cable 3 is installed in the main body portion 40, the protrusion 421 bites into the outer coating of the optical cable 3 more largely when the cover 50 is slid. After the cover 50 is attached, the right and left cover outer surfaces 53C may bulge (the dimension C in fig. 3A increases).
Next, the operator attaches the optical cable 3 to the rear member 90 of the assembly tool 70 (fig. 5A (e)). The optical cable 3 is disposed in the cable holding portion 91 of the rear member 90 (fig. 5A (f)). At this time, the front member 80 of the assembly tool 70 is rotated relative to the rear member 90, and is inclined downward.
Next, the operator rotates the front member 80 of the assembly tool 70 upward, and holds the holding member 30 on the front member 80 (fig. 5B (a)). At this time, the optical fiber 4 drawn out from the optical cable 3 projects further forward than the front end of the front side member 80. The worker removes the coating on the end of the optical fiber 4 and cuts the end of the optical fiber 4.
Next, the operator rotates the front member 80 downward to remove the front member 80 from the holding member 30. Then, the holding member 30 is inserted into the fixing portion 152 of the optical connector body 10 (fig. 5B (B)). When the insertion is continued, the claw portion 441 of the holding member 30 is hooked on the locking portion 15B of the rear housing 15, and the holding member 30 is fixed to the optical connector body 10 (fig. 5B (c)). By the insertion of the holding member 30, the end of the optical fiber 4 is inserted into the opening 12A of the mechanical splice 12, and is butted and connected to the built-in fiber of the ferrule 11.
By this insertion, the 2 nd fitting portion 62 between the inner wall surface 15A of the fixing portion 152 of the housing 13 (rear housing 15) and the lid outer surface 53C is formed, and the side plate portion 53 of the lid 50 is pressed inward by the inner wall surface 15A. Thereby, the pair of side walls 42 of the grip portion 40A is further pressed inward. This can further improve the gripping force of the optical cable 3. In particular, even when the left and right lid outer surfaces 53C of the lid 50 expand, the left and right side plate portions 53 of the lid 50 and the pair of side wall portions 42 of the grip portion 40A are pressed inward by the inner wall surface 15A of the fixing portion 152. In the present embodiment, even if the pressing force of the inner wall surface 15A of the fixing portion 152 toward the inside is small, the grip portion outer surface 424 of the body portion 40 is pressed from the outside by the cover inner surface 53B of the cover 50, and therefore a sufficient gripping force can be obtained. That is, even if the fixing portion 152 of the rear case 15 is thin, the pressing force of the rear case 15 against the gripping member 30 is weak, and the gripping force of the gripping member 30 against the optical cable 3 can be increased.
Next, the operator removes the intervening member 19 from the optical connector body 10 (fig. 5B (d)). By pulling out the wedge portion (not shown) of the intervening member 19, the gap of the mechanical splice 12 is closed, and the optical fiber 7 of the optical cord 6 and the internal fiber (not shown) are fixed in a state of abutting.
Next, the worker removes the assembly tool 70 ((e) of fig. 5B). This completes the assembly operation of the optical connector 100 ((f) of fig. 5B).
< nodules >
According to the present embodiment described above, the optical connector 100 includes: a holding member 30 that holds a rectangular optical cable 3 (optical cable 3) having an outer coating layer covering the optical fiber 4; and a rear case 15 (case 13) having a fixing portion 152 for fixing the gripping member 30. The gripping member 30 further includes: a main body 40 having a pair of side walls 42 with a protrusion 421 formed on the inner surface; and a cover 50 attached to the body 40. As shown in fig. 5A (d), the cover 50 is slid forward relative to the main body 40, whereby the grip outer surface 424 (corresponding to the outer surface) of the side wall portion 42 is pressed by the inner surface 53B of the cover 50, and the protrusion 421 bites into the outer coating of the optical cable 3, whereby the optical cable 3 is gripped by the gripping member 30 (see fig. 3C). This can increase the biting of the protrusion 421 into the outer coating of the optical fiber cable 3, and can increase the gripping force of the gripping member 30 on the optical fiber cable 3.
Further, according to the present embodiment, as shown in fig. 5B (B), the holding member 30 is slid forward relative to the fixing portion 152 of the rear case 15, and the holding member 30 is fixed to the fixing portion 152 (see fig. 3B). This allows the gripping member 30 to be pressed from the outside, and the gripping force of the optical cable 3 can be further increased.
Further, according to the present embodiment, the body portion 40 of the gripping member 30 has the lid claw portion 422 (corresponding to the lid fixing portion), and the lid 50 has the engagement hole 53A (corresponding to the lid fixing portion) that engages with the lid claw portion 422. This allows the main body 40 and the cover 50 to be fixed in a state where the protrusion 421 bites into the outer coating of the optical fiber cable 3.
In addition, according to the present embodiment, the main body portion 40 has the claw portion 441 (corresponding to the engaging portion), and the rear case 15 has the locking portion 15B (corresponding to the engaging portion) that engages with the claw portion 441. This allows the main body 40 and the rear case 15 to be fixed in a state where the protrusion 421 bites into the outer coating of the optical cable 3.
In the 2 nd embodiment, the following embodiments are also provided
Fig. 6 is an explanatory diagram of the structure of the cover 50 of embodiment 2.
In embodiment 2, 4 caps 50(501 to 504) are prepared for the gripping member 30 (main body portion 40). The 4 covers 50(501 to 504) are formed by, for example, integral molding using resin, and can be used separately.
The shape (the above-mentioned dimension A, B, C), the size of the insertion hole 55, and the like of each of the covers 50(501 to 504) are determined according to the type (outer shape) of the optical cable 3 and the optical cord 6.
For example, in the case of the present embodiment, the cover 501 is adapted to a 3.1 × 2.0mm square optical cable 3, and the cover 502 is adapted to a 2.0 × 1.6mm square optical cable 3. The cover 503 is adapted to a round optical cable 6 (optical fiber cord 6) having a diameter of 2mm, and the cover 504 is adapted to a round optical cable 6 having a diameter of 3 mm.
The operator can select and use a cover corresponding to the optical cable (optical cable 3, optical fiber cord 6) used in the optical connector 100.
In this way, by forming a plurality of (4 in this case) caps 50 having different shapes by integral molding, it is possible to improve the compatibility with the type of optical cable and to reduce the cost.
In the 3 rd embodiment, the term "first" means that the first component is not moved to the second component
Fig. 7 is an explanatory view of the holding member 30 according to embodiment 3.
As described above, since the optical connector 100 of the present embodiment is a small LC-shaped optical connector, the size of the cover 50 for the holding member 30 is very small. Therefore, there is a fear that the cap 50 is lost.
Therefore, in embodiment 3, as shown in fig. 7, the body portion 40 of the gripping member 30 and the cover 50 are coupled to each other in advance by the coupling portion 32. When the optical connector 100 is assembled, the coupling portion 32 is cut to separate the body 40 and the cover 50.
This makes it possible to prevent the cap 50 from being lost.
In the optical connector 100 described above, the cap 50 is fixed to the body portion 40 of the gripping member 30, and the body portion 40 (gripping member 30) to which the cap 50 is fixed to the housing 13 (fixing portion 152 of the rear housing 15), but the cap 50 may not be directly fixed to the body portion 40 of the gripping member 30.
For example, a cover engaging hole (corresponding to a cover fixing portion) may be formed in the fixing portion 152 of the case 13 (rear case 15), and a cover side claw portion (corresponding to a cover fixing portion) may be formed on the outer surface of the side plate portion 53 of the cover 50. The holding member 30 (the main body 40 and the cover 50) may be fixed to the fixing portion 152 of the housing 13 by engaging the cover-side pawl portions with the cover engaging holes.
The term "other" means
The above-described embodiments are provided for easy understanding of the present invention, and should not be construed as limiting the present invention. The present invention can be modified and improved without departing from the gist thereof, and the present invention naturally includes equivalents thereof.
< holding part 30 >
The gripping member 30 is configured to be able to grip both the rectangular optical cable 3 and the circular optical cable 6 (optical fiber cord 6). However, the gripping member 30 may be configured to be able to grip the rectangular optical cable 3 but not the round optical cable 6.
The gripping member 30 is configured to be able to grip a plurality of types of the rectangular optical cables 3, but may be shaped to correspond to only a specific type of the rectangular optical cable 3.
Description of reference numerals
Optical cable (square optical cable); an optical fiber; an optical fiber cord (round optical cable); an optical fiber; a fibrous tensile body; an optical connector body; a ferrule; a mechanical splice; an opening portion; a housing; a front side housing; a front-side receiving portion; a rear side housing; inner wall surface; a locking portion; a spring; an interventional component; a holding member; a joint; a main body portion; a grip portion; a plug-through portion; a bottom wall portion; a sidewall portion; a sidewall portion; a cover; a barrel portion; a front end face; a rear plate portion; an upper plate portion; a floor portion; 53.. side panel portions; 53a.. clamping holes; a lid inner surface; a cover outer surface; inserting a through hole; 61.. 1 st fitting part; a No. 2 fitting part; 63... an abutment (fold back); an assembly tool; 80.. front piece; 90.. a rear piece; a cable retention portion; 92.. a fibrous tensile member-retaining portion; an optical connector; a projection; a claw portion for a cover; a slit; an outer surface of the handle; 425.. a stepped portion; a claw portion; 501. 502, 503, 504.
Claims (9)
1. An optical connector is provided with:
a holding member that holds an optical cable having an outer coating layer covering the optical fiber; and
a housing having a fixing portion for fixing the holding member,
the optical connector is characterized in that it is,
the holding member includes: a main body having a pair of side wall portions with a protrusion portion formed on an inner surface thereof; and a cover mounted on the main body portion,
the holding member holds the optical cable by sliding the cover with respect to the main body, pressing the outer surface of the side wall portion with the inner surface of the cover, and biting the protrusion into the outer coating of the optical cable.
2. The optical connector of claim 1,
the holding member can be fixed to the fixing portion by sliding the holding member relative to the fixing portion of the housing.
3. The optical connector according to claim 1 or 2,
the main body and the lid have lid fixing portions, respectively.
4. The optical connector according to any one of claims 1 to 3,
the housing and the main body have engaging portions, respectively.
5. The optical connector according to any one of claims 1 to 4,
there are a plurality of the covers corresponding to the kinds of the optical cables.
6. The optical connector of claim 5,
a plurality of the caps are formed by integral molding.
7. The optical connector according to any one of claims 1 to 4,
the main body portion and the cover are coupled in advance.
8. A holding member holds an optical cable having an outer coating layer covering an optical fiber,
the gripping member is characterized in that it is provided with,
comprising: a main body having a pair of side wall portions with a protrusion portion formed on an inner surface thereof; and a cover mounted on the main body portion,
by sliding the cover with respect to the main body, the outer surface of the side wall portion is pressed by the inner surface of the cover, and the protrusion bites into the outer coating layer of the optical cable.
9. An optical connector manufacturing method for assembling an optical connector by inserting a holding member holding an optical cable into a main body of the optical connector,
the method of manufacturing an optical connector is characterized in that,
the holding member includes: a main body having a pair of side wall portions with a protrusion portion formed on an inner surface thereof; and a cover mounted on the main body portion,
the optical connector manufacturing method performs the following steps:
a step of housing the optical cable between the pair of side wall portions of the main body portion; and
and a step of causing the gripping member to grip the optical cable by causing the protrusion to bite into the outer coating layer of the optical cable by sliding the cover with respect to the main body and pressing the outer surface of the side wall portion with the inner surface of the cover.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-212831 | 2017-11-02 | ||
| JP2017212831A JP2019086572A (en) | 2017-11-02 | 2017-11-02 | Optical connector, gripping member, and method of manufacturing optical connector |
| PCT/JP2018/034100 WO2019087586A1 (en) | 2017-11-02 | 2018-09-14 | Optical connector, holding member, and method for manufacturing optical connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111263907A true CN111263907A (en) | 2020-06-09 |
Family
ID=66333025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880069068.1A Pending CN111263907A (en) | 2017-11-02 | 2018-09-14 | Optical connector, holding member, and method for manufacturing optical connector |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2019086572A (en) |
| CN (1) | CN111263907A (en) |
| WO (1) | WO2019087586A1 (en) |
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| JP2601675Y2 (en) * | 1993-02-03 | 1999-11-29 | 住友電装株式会社 | Optical fiber cable connector |
| US20040120653A1 (en) * | 2002-12-19 | 2004-06-24 | Zen-Chyuan Chen | Optical fiber joint |
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| CN103364886B (en) * | 2012-04-09 | 2015-03-11 | 鸿富锦精密工业（深圳）有限公司 | Optical-fiber connector and assembling fixture used by optical-fiber connector |
| KR101739028B1 (en) * | 2015-05-13 | 2017-05-25 | 주식회사 에이.제이.월드 | Optical connector |
| BR102017002948A2 (en) * | 2017-02-14 | 2018-09-25 | Furukawa Ind S A Produtos Eletricos | fiber optic cable connector and fiber optic cable clamp |
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- 2018-09-14 CN CN201880069068.1A patent/CN111263907A/en active Pending
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| EP1116974A2 (en) * | 2000-01-14 | 2001-07-18 | Corning Cable Systems LLC | Removably mounted fiber optic connector and associated adapter |
| JP2006195355A (en) * | 2005-01-17 | 2006-07-27 | Sanwa Denki Kogyo Co Ltd | Optical fiber fixing mechanism of field assembly optical connector |
| JP2008089703A (en) * | 2006-09-29 | 2008-04-17 | Furukawa Electric Co Ltd:The | Method for mounting optical connector on coated optical fiber, optical connector assembly, coated optical fiber protective tube, and optical fiber temporary fixing tool used therefor |
| JP2011112751A (en) * | 2009-11-25 | 2011-06-09 | Autonetworks Technologies Ltd | Optical cable connector |
| WO2011116521A1 (en) * | 2010-03-24 | 2011-09-29 | 深圳日海通讯技术股份有限公司 | Field installable optical-fiber connector |
| CN105388568A (en) * | 2014-09-02 | 2016-03-09 | 株式会社精工技研 | Optical connector assembly and optical connector adapter with shutter |
| JP2016164601A (en) * | 2015-03-06 | 2016-09-08 | 株式会社フジクラ | Optical connector and optical cable with connector |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019086572A (en) | 2019-06-06 |
| WO2019087586A1 (en) | 2019-05-09 |
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