WO2015133574A1 - ケーブル把持構造体及び光ファイバコネクタ - Google Patents
ケーブル把持構造体及び光ファイバコネクタ Download PDFInfo
- Publication number
- WO2015133574A1 WO2015133574A1 PCT/JP2015/056514 JP2015056514W WO2015133574A1 WO 2015133574 A1 WO2015133574 A1 WO 2015133574A1 JP 2015056514 W JP2015056514 W JP 2015056514W WO 2015133574 A1 WO2015133574 A1 WO 2015133574A1
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- WIPO (PCT)
- Prior art keywords
- optical fiber
- cable
- fiber cable
- installation
- wall
- Prior art date
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Classifications
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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
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical means
- G02B6/3806—Semi-permanent connections, i.e. wherein the mechanical means keeping the fibres aligned allow for removal of the fibres
-
- 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
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
- G02B6/3821—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with axial spring biasing or loading means
-
- 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
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
- G02B6/387—Connector plugs comprising two complementary members, e.g. shells, caps, covers, locked together
-
- 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
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
- G02B6/3888—Protection from over-extension or over-compression
-
- 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
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/389—Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
- G02B6/3893—Push-pull type, e.g. snap-in, push-on
Definitions
- One embodiment of the present invention relates to a cable gripping structure and an optical fiber connector.
- Patent Document 1 discloses an optical fiber holder in which protrusions projecting from a wall surface toward the center are formed on both walls of a space for accommodating an optical fiber cable. In this optical fiber holder, when the optical fiber cable is pushed into the space where the protrusions are formed, the protrusions bite into the cable to grip the cable.
- the protrusion formed on the wall surface is continuously formed from the proximal end to the distal end side of the wall surface in order to hold the optical fiber cable in the entire height direction.
- the projections function like ribs, so that the pair of wall surfaces are hardly deformed.
- the wall surface is deformed as a whole from the base end. Therefore, for example, when the protrusion is designed to match a cable having a small diameter, it may be difficult to push the cable having a large diameter. On the other hand, when the protrusion is designed to match the cable having a large diameter, it may be difficult to appropriately grip the cable having a small diameter. Accordingly, there has been a demand for a cable gripping structure and an optical fiber connector that can appropriately grip optical fiber cables having a plurality of types of diameters and have improved workability.
- a cable gripping structure is a cable gripping structure for fixing an optical fiber cable to an optical fiber connector, and a base and a pair of support walls provided on the base facing each other, The pair of support walls is provided with a blade portion for gripping the optical fiber cable on the distal end side, spaced from the base end of the support wall.
- the blade portion for gripping the optical fiber cable is provided on the distal end side apart from the base end of the support wall. For this reason, even when the size between the blades is set so that the small-diameter optical fiber cable can be sufficiently grasped, when inserting a large-diameter optical fiber cable, the blade needs to bite into the cable greatly. Absent. Therefore, compared with the case where the blade portion is formed continuously from the base end, the force for pushing the optical fiber cable is reduced. As described above, the cable gripping structure can appropriately grip optical fiber cables having a plurality of types of diameters, and can improve workability.
- the blade grips both the first cable and the second cable having a longer side and a shorter side in the cross section than the first cable.
- the length dimension of the blade portion may be equal to or greater than the long side dimension in the cross section of the second cable, and may be less than the long side dimension in the cross section of the first cable.
- the pair of support walls includes a thin wall portion formed on the distal end side of the support wall and a thin wall portion formed on the proximal end side of the support wall. You may have a thick part with large thickness.
- the boundary between the thin portion and the thick portion may be formed between the base end of the support wall and the blade portion.
- An optical fiber connector is an optical fiber connector attached to an end portion of an optical fiber cable, and includes a connector main body in which an installation portion for installing the optical fiber cable is formed, an installation portion, A connecting portion, and the installation portion is formed by cutting out at least one surface of the rear end portion of the connector body, and the cover portion includes a cable gripping structure and covers the installation portion. It is provided so that rotation is possible.
- the installation portion is provided with a bottom surface facing the tip of the support wall in a state where the cover portion covers the installation portion, and the bottom surface protrudes from the bottom surface, In a state where the installation portion is covered, a pressing portion that is positioned between the pair of support walls and can press the optical fiber cable may be provided.
- the cover portion may be provided with a protruding portion protruding from the proximal end side to the distal end side between the pair of support walls.
- optical fiber cables having a plurality of types of diameters it is possible to appropriately grip optical fiber cables having a plurality of types of diameters while improving workability.
- FIG. 1 It is a disassembled perspective view which shows the optical fiber connector which concerns on one Embodiment. It is a perspective view which shows the optical fiber connector in the state which opened the cover part. It is a perspective view which shows the optical fiber connector in the state which closed the cover part. It is a perspective view which shows a cover part.
- A) is a front view of a cover part.
- B) is the bottom view.
- C) is the same sectional view.
- (A)-(c) is sectional drawing which shows the state which the installation part and the cover part engaged.
- FIG. 1 is an exploded perspective view showing an optical fiber connector 1 according to the present embodiment.
- FIG. 2 is a perspective view showing the optical fiber connector 1 in a state where the cover portion 5 is opened.
- FIG. 3 is a perspective view showing the optical fiber connector 1 with the optical fiber cable attached and the cover 5 closed.
- the optical fiber connector 1 includes a connector main body 2 in which an installation portion 3 for installing the optical fiber cable 100 is formed at the rear portion, and a cover portion 5 connected to the installation portion 3. ing.
- the length direction in which the optical fiber connector 1 extends is referred to as “X-axis direction”.
- the optical fiber connector 1 is attached to the end portion of the optical fiber cable so that the optical fiber cable extends along the length direction of the optical fiber connector 1.
- the thickness direction of the optical fiber connector 1 is defined as “Z-axis direction”.
- the direction orthogonal to the X-axis direction and the Z-axis direction, that is, the width direction of the optical fiber connector 1 is defined as “Y-axis direction”.
- the front end side of the optical fiber connector 1 is referred to as “front (X-axis positive side)”, and the side on which the optical fiber cable is inserted is referred to as “rear (X-axis negative side)”.
- the side on which the pressing operation of the cap 18 described later is performed is “upper (Z-axis positive side)”, and the opposite side is “lower (Z-axis negative side)”.
- a central axis CL that extends in parallel with the optical fiber connector 1 in the X-axis direction is set.
- the members of the optical fiber connector 1 described in the present application have a plane-symmetric structure with the XZ plane passing through the central axis CL as a reference plane.
- the connector main body 2 includes a base portion 11, a shell 12, and an optical fiber connection portion 13.
- the connector body 2 is configured by including an optical fiber connection portion 13 in a base portion 11 and covering the outer periphery of the base portion 11 with a shell 12.
- an SC type optical connector can be used as the connector main body 2.
- Other examples include FC type optical connectors, ST type optical connectors, LC type optical connectors, and the like.
- SC type optical connector will be described. However, this SC type optical connector is merely an example, and the present invention is not limited to such a connector form.
- the base portion 11 is a rectangular cylindrical member extending in the length direction (X-axis direction), and is opposed to the upper wall portion 21 disposed on the upper side (Z-axis positive side) and the upper wall portion 21.
- the shell 12 is a rectangular tubular member extending in the length direction, and includes an upper wall portion 26 disposed on the upper side, a bottom wall portion 27 disposed on the lower side facing the upper wall portion 26, And side wall portions 28 and 29 facing in the width direction.
- the shell 12 is engaged with the base portion 11 so as to cover the outer peripheral surface on the front side of the base portion 11, and the upper wall portion 26, the bottom wall portion 27, and the side wall portions 28 and 29 of the shell 12 are The wall part 21, the bottom wall part 22, and the side wall parts 23 and 24 are covered.
- the optical fiber connection portion 13 includes a cylindrical collar 14 extending in the length direction (X-axis direction), and a ferrule 16 provided at the front end 14 a of the collar 14.
- the collar 14 has a through hole 14c through which an optical fiber inserted from the rear end side of the connector body 2 is inserted at the rear end 14d.
- a spring 19 is disposed on the rear end 14d side of the collar 14 so as to surround the collar 14. This spring 19 secures the pressure of the ferrule 16 by applying an elastic force to the collar 14 toward the front end of the connector within the base portion 11, and is the other object to be fitted with the optical fiber connector 1. Maintain contact with the ferrule built into the fiber optic connector.
- the ferrule 16 has an optical fiber introduction hole (not shown) formed along the central axis CL, and a connecting optical fiber (not shown) is inserted and fixed in the optical fiber introduction hole.
- the ferrule 16 is connected to the front end 14a so that the collar 14 and the central axis coincide with each other.
- the collar 14 is formed with an opening 14b that opens upward (Z-axis positive direction), and a core fixing portion (not shown) is accommodated in the opening 14b.
- a cap 18 for pressing the core wire fixing part from above is disposed in the opening 14b of the collar 14.
- Openings 11 a and 12 a are formed in the upper wall portion 21 of the base portion 11 and the upper wall portion 26 of the shell 12 at positions corresponding to the opening portions 14 b of the collar 14, respectively. Accordingly, the cap 18 is exposed from the shell 12.
- connection optical fiber and the optical fiber of the optical fiber cable 100 inserted from the rear end side of the connector main body 2 are abutted and are in an optically connected state.
- the optical fiber of the optical fiber cable 100 and the connecting optical fiber are fixed.
- the state in which the optical fiber connector 1 is “attached” to the end of the optical fiber means that the connector main body 2 is connected to the optical fiber and the cover portion 5 is engaged with the installation portion 3. Is fixed, and the entire optical fiber connector 1 is completely attached to the end of the optical fiber, indicating that it can be connected to other connectors.
- the rear side of the base portion 11 extends rearward from the rear end 12c of the shell 12.
- the upper wall portion 21 which is one surface constituting the periphery is cut out, so that the installation portion 3 for installing the optical fiber cable 100 by the bottom wall portion 31 and the side wall portions 32 and 33. Is formed.
- the installation part 3 is for installing the optical fiber cable 100 arranged along the length direction of the installation part 3, the optical fiber cable 100 is arranged on the rear end 3b side, and the front end 3a side An optical fiber from which the outer sheath of the optical fiber cable 100 is removed is disposed.
- the installation portion 3 has a substantially U-shaped cross section with an upper opening, and extends in the length direction from the rear end 12 c of the shell 12 of the connector main body 2 toward the rear.
- the installation part 3 includes a bottom wall part 31 disposed on the lower side, and side wall parts 32 and 33 facing in the width direction.
- a pair of groove portions 34a and 34b are formed on the left and right sides, leaving the central portion.
- the rear side of the bottom wall surface 31a has a shape in which a central portion in the left-right direction of the bottom surface 35 protrudes upward. This protruding portion becomes a pressing portion 36 described later.
- An insertion hole 3c communicating with the core wire fixing part is formed on the front end 3a side of the installation part 3, and an optical fiber installed in the installation part 3 is inserted therethrough.
- Shaft portions 37a and 37b for rotatably connecting the cover portion 5 are formed on the front end sides of the outer wall surfaces 32a and 33a of the side wall portions 32 and 33, respectively.
- a pair of engaging portions 38 for engaging the installation portion 3 and the cover portion 5 with the installation portion 3 covered with the cover portion 5 are formed on the rear end sides of the outer wall surfaces 32a and 33a. (The engaging portion on the outer wall surface 33a is not shown).
- the engaging portion 38 is provided to protrude outward from the outer wall surfaces 32a and 33a.
- the cover unit 5 is for engaging the installation unit 3 and fixing the optical fiber cable 100 to the optical fiber connector 1 while covering the installation unit 3 from above.
- the cover portion 5 includes a rectangular plate-shaped upper wall portion 51 and side wall portions 52 and 53 provided on both sides in the width direction of the upper wall portion 51, and holds the optical fiber cable 100 between the side wall portions 52 and 53.
- a cable gripping structure 6 is provided. Circular through holes 57 a and 57 b corresponding to the shaft portions 37 a and 37 b of the installation portion 3 are formed at one end side in the length direction of the side walls 52 and 53.
- the cover part 5 By connecting the through holes 57a and 57b of the cover part 5 to the shaft parts 37a and 37b of the installation part 3, the cover part 5 is rotatably connected to the installation part 3. Further, an engaged portion 58 corresponding to the engaging portion 38 of the installation portion 3 is formed as a rectangular through hole on the other end side in the length direction of the side wall portions 52 and 53.
- the engaging portion 38 of the installation portion 3 is engaged with the engaged portion 58 of the cover portion 5 connected to the installation portion 3, the installation portion 3 is covered with the cover portion 5.
- the cover part 5 has a substantially U-shaped cross section with the lower part opened.
- FIG. 4 is a perspective view showing the cover portion 5.
- 5A is a front view of the cover portion 5
- FIG. 5B is a bottom view thereof
- FIG. 5C is a sectional view thereof.
- the X-axis direction of the cover part 5 in this arrangement is based on the state in which the cover part 5 covers the installation part 3 and the cover part 5 and the installation part 3 are engaged (see FIG. 3).
- the “length direction” is set, the X-axis positive direction is “front”, and the X-axis negative direction is “back”.
- the Z-axis direction is “height direction”, the Z-axis positive direction is “up”, and the Z-axis negative direction is “down”.
- the cable gripping structure 6 formed on the cover portion 5 includes a pair of support walls 63 and 64 provided with a base portion 62 as a base end, and tip ends 63 a of the support walls 63 and 64. , 64a and blade portions 65, 66 formed on the side.
- a region on the rear end 51 a side of the upper wall portion 51 is configured as a base portion 62.
- a portion of the base portion 62 between the support walls 63 and 64 is formed so as to protrude from the inner surface 51 b of the upper wall portion 51 toward the ends 63 a and 64 a of the support walls 63 and 64.
- the support walls 63 and 64 are formed to protrude from the base portion 62 on the rear end side between the side wall portions 52 and 53 of the cover portion 5, and face each other so as to be parallel to the side wall portions 52 and 53. Are arranged. On the outer surfaces 63b and 64b of the support walls 63 and 64, step portions 63c and 64c extending in the length direction are formed at predetermined positions in the height direction.
- the tips 63a and 64a side of the support walls 63 and 64 are thin wall portions 63d and 64d having a small wall thickness (thickness in the Y-axis direction).
- the base ends (base 62 side) of the walls 63 and 64 are thick portions 63e and 64e having a wall thickness larger than the thin portions 63d and 64d.
- the step portions 63c and 64c are formed below the middle of the support walls 63 and 64 in the height direction.
- the blade portions 65 and 66 are formed so as to protrude from the inner surfaces 63g and 64g of the support walls 63 and 64 when viewed in the Z-axis direction.
- three blade portions 65 and 66 are formed on the inner surfaces 63g and 64g of the support walls 63 and 64 so as to be arranged at intervals in the length direction. There may be many.
- the front surfaces 65a and 66a of the blade portions 65 and 66 are formed orthogonal to the support walls 63 and 64, and the blade portions
- the rear surfaces 65b and 66b (the rear surfaces in a state where the installation portion 3 and the cover portion 5 are fitted) 65b and 66b are formed to be inclined toward the front side.
- the blade portions 65 and 66 are formed in a substantially right triangle shape with the front side being a right angle when viewed in the Z-axis direction, thereby increasing the gripping force for pulling the optical fiber cable 100 in the length direction. Further, as shown in FIG.
- the blade portions 65 and 66 are provided on the distal end 63 a and 64 a side apart from the base ends of the support walls 63 and 64. Specifically, the blade portions 65 and 66 extend in the vertical direction from a predetermined height spaced from the base portion 62 (the end portion 62a of the base portion 62) to the tips of the support walls 63 and 64. The end portion 62a of the base portion 62 (that is, the base ends of the support walls 63 and 64) and the end portions 65c and 66c on the base portion 62 side of the blade portions 65 and 66 are separated from each other.
- the blade portions 65 and 66 are provided with inclined portions 65f and 66f that are inclined so that the distance between the blades 65 and 66 is increased on the tip ends 63a and 64a side of the support walls 63 and 64, respectively. Accordingly, the optical fiber cable 100 can easily enter between the blade portions 65 and 66 from the ends 63a and 64a of the support walls 63 and 64.
- boundary portions 67a and 67b (step portions 63c and 64c) between the thin portions 63d and 64d and the thick portions 63e and 64e are the base ends of the support walls 63 and 64 and the base portions 62 of the blade portions 65 and 66, respectively.
- the base portion 62 of the cover portion 5 is provided with a protrusion 69 that protrudes from the base end side to the tip end side between the pair of support walls 63 and 64.
- the protrusion 69 is provided to support the optical fiber cable 100 so that the optical fiber cable 100 does not wobble when the diameter of the optical fiber cable 100 held by the blade parts 65 and 66 is small. Are provided at intervals.
- the protruding portion 69 is provided so as to protrude from the surface that is one step lower than the end portion 62 a of the base portion 62.
- the protrusion 69 is provided to be inclined forward from the base end 69a to the tip end 69b. Therefore, when the diameter of the optical fiber cable 100 is large, it is pressed by the inserted optical fiber cable 100 and is easily deformed forward.
- a large-diameter optical fiber cable (first cable) 101 and a small-diameter optical fiber cable (long-side and short-side dimensions in the cross section smaller than that of the large-diameter optical fiber cable 101 ( A case where the second cable 102 is attached will be described.
- the dimensions of the long side 101a and the short side 101b in the cross section of the large diameter optical fiber cable 101 are, for example, about 3 mm and about 2 mm, and the long side 102a and the short side 102b in the cross section of the small diameter optical fiber cable 102 are, for example.
- the dimensions are, for example, about 2 mm and about 1.6 mm.
- the length dimension of the blade portions 65 and 66 is equal to or larger than the dimension of the long side 102 a in the cross section of the small-diameter optical fiber cable 102 and is less than the dimension of the long side 101 a in the cross section of the large-diameter optical fiber cable 101. It is.
- the length dimension of the blade parts 65 and 66 is a dimension from the edge parts 65c and 66c by the side of the base 62 of the blade parts 65 and 66 to the front-end
- FIG. 6A to 6C are cross-sectional views schematically showing a state where the installation portion 3 and the cover portion 5 are engaged (a state where the cover portion 5 covers the installation portion 3). Is a state in which the optical fiber cable 100 is not gripped.
- FIG. 6A in the state where the installation portion 3 and the cover portion 5 are engaged, the bottom surface 35 of the installation portion 3 and the tips 63a and 64a of the support walls 63 and 64 are opposed to each other.
- a pressing portion 36 protruding from the bottom surface 35 is located between the support walls 63 and 64.
- the height position of the upper end 36a of the pressing portion 36 is substantially the same as the height of the end portions 65f1 and 66f1 on the base end side of the inclined portions 65f and 66f.
- the distance L1 from the upper end 36a of the pressing portion 36 to the tip of the projection 69 is substantially equal to the dimension of the long side 102a in the cross section of the small-diameter optical fiber cable 102, and the upper end 36a of the pressing portion 36.
- the distance L2 from the base portion 62 to the base portion 62 is substantially equal to the dimension of the long side 101a in the cross section of the large-diameter optical fiber cable 101 (see FIGS. 6A and 6B).
- FIG. 6B shows a state where the small-diameter optical fiber cable 102 is gripped.
- the cover portion 5 and the installation portion 3 are engaged. Indicates the state.
- the optical fiber cable 102 is gripped by blade portions 65 and 66 that bite into the left and right long sides 102 a of the optical fiber cable 102.
- the optical fiber cable 102 is sandwiched between the pressing portion 36 and the blade portions 65 and 66 according to the operation for engaging the cover portion 5 and the installation portion 3. At this time, the optical fiber cable 102 in contact with the blade portions 65 and 66 is relatively pressed toward the blade portions 65 and 66 by the pressing portion 36.
- the optical fiber cable 102 is pushed to a predetermined position between the blade portions 65 and 66 by being gradually pushed by the pushing portion 36.
- the force required for this pressing (operation for engaging the cover portion 5 and the installation portion 3) is about 40N.
- the protrusion 69 is brought into contact with the optical fiber cable 102, thereby preventing the optical fiber cable 102 from being displaced.
- the support walls 63 and 64 are slightly expanded in the direction in which the optical fiber cable 102 expands. At this time, the pulling force required to pull out the optical fiber cable 102 in the length direction is, for example, about 30N.
- FIG. 6C shows a state in which the large-diameter optical fiber cable 101 is gripped.
- the cover portion 5 and the installation portion 3 are engaged. This is the case.
- the lower side of the long side 101 a of the optical fiber cable 101 is held by the blade portions 65 and 66.
- the optical fiber cable 101 is gradually pushed by the pressing portion 36 according to the operation of engaging the cover portion 5 and the installation portion 3, and is pushed until reaching the base portion 62. .
- the protrusion 69 formed on the base 62 is pushed and bent by being pressed by the optical fiber cable. Accordingly, the optical fiber cable is held by the blade portions 65 and 66 and supported by the pressing portion 36 and the base portion 62 in a state where the cover portion 5 and the installation portion 3 are engaged. In the state in which the optical fiber cable is gripped, the support walls 63 and 64 are spread more widely by the optical fiber cable than in the case of the small diameter, but the optical fiber cable is gripped over the entire blade portions 65 and 66. Yes.
- the force required for pressing to attach the large-diameter optical fiber cable 101 is about 50N. Further, the pulling force required to pull out the optical fiber cable 101 in the length direction is about 40N.
- a cable gripping structure in which the end portions 65c and 66c of the blade portions 65 and 66 extend to the end portion 62a of the base portion 62 and is connected to the end portion 62a will be considered.
- the large-diameter optical fiber cable 101 between the blade portions 65 and 66 is used.
- the gap between the blade portions 65 and 66 does not increase in the vicinity of the proximal end, so that the blade portions 65 and 66 need to bite into the optical fiber cable 101.
- the optical fiber cable 101 is cut into the blade portions 65 and 66.
- the force inserted between them also increases.
- the dimension between the blade parts 65 and 66 is set according to the large-diameter optical fiber cable 101 so that the blade parts 65 and 66 are not greatly cut into the optical fiber cable 101 and can be inserted with an appropriate pressing force. A sufficient gripping force for the small-diameter optical fiber cable 102 cannot be ensured.
- the blade portions 65 and 66 for gripping the optical fiber cable 100 are separated from the base ends (base portions 62) of the support walls 63 and 64, and the tip 63a. , 64a side. Therefore, even when the dimension between the blade portions 65 and 66 is set so that the small-diameter optical fiber cable 102 can be sufficiently grasped, when inserting the large-diameter optical fiber cable 101, the blade portion 65, 66 does not have to bite into the optical fiber cable 101, and the force for inserting the optical fiber cable can be reduced as compared with the case where the blade portions 65 and 66 are formed continuously from the base end.
- the cable gripping structure 6 can appropriately grip optical fiber cables having a plurality of types of diameters, and can improve workability.
- the blade portions 65 and 66 can grip both the large-diameter optical fiber cable 101 and the small-diameter optical fiber cable 102.
- the length dimension is equal to or larger than the dimension of the long side 102a in the cross section of the small-diameter optical fiber cable 102 and is smaller than the dimension of the long side 101a in the cross section of the large-diameter optical fiber cable 101.
- the same size of the cable gripping structure 6 is used for a plurality of types of optical fiber cables having different outer diameters. Therefore, the amount of biting of the blade portions 65 and 66 with respect to the large-diameter optical fiber cable 101 becomes large.
- the small-diameter optical fiber cable 102 is gripped over the entire long side 102a direction of the cross section, it can be gripped with an appropriate force even if the amount of biting of the blade portions 65 and 66 is small.
- the large-diameter optical fiber cable 101 is gripped only in a part in the direction of the long side 101a of the cross section, but can be gripped appropriately because the amount of biting of the blade portions 65 and 66 increases.
- the pair of support walls 63 and 64 include thin-walled portions 63d and 64d having a small wall thickness formed on the distal ends 63a and 64a, and the base end sides of the support walls 63 and 64, respectively. And thick wall portions 63e and 64e having a large wall thickness. Since the base end sides of the support walls 63 and 64 are the thick portions 63e and 64e, the reaction force received from the support wall is larger than when the entire support wall is thinned. The power can be increased. Thereby, when the small-diameter optical fiber cable 102 is inserted, the gripping force for the small-diameter optical fiber cable 102 can be further increased. In addition, since the tips 63a and 64a side of the support walls 63 and 64 are thin portions 63d and 64d, it is possible to suppress an increase in the pressing force required for the pressing operation compared to the case where the entire support wall is thick. Yes.
- the boundary portions 67a and 67b between the thin wall portions 63d and 64d and the thick wall portions 63e and 64e concentrate stress when an external force is applied to the support walls 63 and 64. Because it is easy, it is easier to deform than other parts.
- the boundary portions 67a and 67b between the thin wall portions 63d and 64d and the thick wall portions 63e and 64e are formed between the base ends of the support walls 63 and 64 and the blade portions 65 and 66, thereby supporting The walls 63 and 64 are more easily bent, and the pressing force of the large-diameter optical fiber cable 101 can be reduced.
- the optical fiber connector 1 includes an installation unit 3 for installing the optical fiber cable 100 and a cover unit 5 connected to the installation unit 3.
- the installation part 3 is comprised by notching at least 1 surface of the rear-end part of the base part 11 in the connector main body 2, and the cover part 5 is equipped with the cable holding structure 6, and covers the installation part 3. Is provided so as to be rotatable with respect to the installation part 3. Therefore, when attaching the optical fiber cable 100 to the optical fiber connector 1, the operator only needs to perform the operation of rotating the cover unit 5 in a state where the optical fiber cable 100 is installed in the installation unit 3. Thereby, the optical fiber cable 100 installed in the installation unit is appropriately held by the cable holding structure 6 formed in the cover unit 5.
- the bottom surface 35 of the installation portion 3 protrudes from the bottom surface 35 and is positioned between the pair of support walls 63 and 64 in a state where the cover portion 5 covers the installation portion 3.
- a pressing portion 36 capable of pressing the optical fiber cable is provided. Therefore, when the cover part 5 and the installation part 3 are engaged with the optical fiber cable 100 placed on the pressing part 36, the optical fiber cable 100 is pressed between the support walls 63 and 64 by the pressing part 36. Will be. Thereby, an optical fiber cable can be reliably inserted by the extent that the pressing portion 36 protrudes between the blade portions 65 and 66 formed on the support walls 63 and 64.
- the cover portion 5 is provided with a protruding portion 69 that protrudes from the proximal end side to the distal end side between the pair of support walls 63 and 64.
- the cable gripping structure 6 is integrally formed with the cover portion 5 of the optical fiber connector 1
- the present invention is not limited to this.
- the cable gripping structure may be configured as an optical fiber holder that is formed separately from the optical fiber connector.
- the present invention is not limited to this.
- the cover part only needs to be provided so as to be rotatable with respect to the installation part.
- the installation part and the cover part may be integrally formed, and the connecting part may have a thin hinge structure. In this case, the cover portion can be rotated with respect to the installation portion with the thin hinge portion as a rotation axis.
- grips the large diameter optical fiber cable 101 and the small diameter optical fiber cable 102 by the cable holding structure 6 was shown, it is not limited to this, Three or more types of optical fiber cables provided with a different outer diameter You may apply to.
- the cross-sectional shape of the optical fiber cable may be various shapes.
- SYMBOLS 1 Optical fiber connector, 2 ... Connector main body, 3 ... Installation part, 5 ... Cover part, 6 ... Cable gripping structure, 35 ... Bottom face, 36 ... Press part, 62 ... Base part, 63, 64 ... Support wall, 63d, 64d ... Thin part, 63e, 64e ... Thick part, 65, 66 ... Blade part, 67a, 67b ... Boundary part, 69 ... Projection part, 100 ... Optical fiber cable, 101 ... Optical fiber cable (first cable), 102: Optical fiber cable (second cable).
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
Claims (7)
- 光ファイバケーブルを光ファイバコネクタに固定するためのケーブル把持構造体であって、
基部と、
互いに対向して基部に設けられる一対の支持壁と、を有し、
前記一対の支持壁には、前記光ファイバケーブルを把持するための刃部が前記支持壁の基端から離間して先端側に設けられる、ケーブル把持構造体。 - 前記刃部は、第1のケーブルと、前記第1のケーブルよりも断面における長辺及び短辺の寸法が小さい第2のケーブルとのいずれも把持することができ、
前記刃部の長さ寸法は、前記第2のケーブルの断面における長辺の寸法以上であり、前記第1のケーブルの断面における長辺の寸法未満である、請求項1に記載のケーブル把持構造体。 - 前記一対の支持壁は、前記支持壁の前記先端側に形成された壁厚の小さい薄肉部と、前記支持壁の前記基端側に形成された前記薄肉部より壁厚の大きい厚肉部とを有する、請求項1又は2に記載のケーブル把持構造体。
- 前記薄肉部と前記厚肉部との境界部は、前記支持壁の基端と前記刃部との間に形成されている、請求項3に記載のケーブル把持構造体。
- 光ファイバケーブルの端部に装着される光ファイバコネクタであって、
前記光ファイバケーブルを設置する設置部が形成されたコネクタ本体と、
前記設置部と連結するカバー部とを備え、
前記設置部は、前記コネクタ本体の後端部分の少なくとも1面が切り欠かかれることにより形成され、
前記カバー部は、請求項1~4のいずれか一項に記載のケーブル把持構造体を備え、前記設置部を覆うように前記設置部に対して回動可能に設けられている、光ファイバコネクタ。 - 前記設置部には、前記カバー部が前記設置部を覆った状態において前記支持壁の先端に対向する底面が設けられ、
前記底面には、前記底面から突出し、前記カバー部が前記設置部を覆った状態において、前記一対の支持壁の間に位置し、前記光ファイバケーブルを押圧可能な押圧部が設けられている、請求項5に記載の光ファイバコネクタ。 - 前記カバー部には、前記一対の支持壁の間に、前記基端側から前記先端側へ突出する突起部が設けられている、請求項5または6に記載の光ファイバコネクタ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2016011018A MX2016011018A (es) | 2014-03-05 | 2015-03-05 | Estructura de sujecion de cable y conector de fibra optica. |
US15/117,889 US20170082807A1 (en) | 2014-03-05 | 2015-03-05 | Cable gripping device and optical fiber connector |
EP15758040.8A EP3115814A4 (en) | 2014-03-05 | 2015-03-05 | Cable gripping structure and optical fiber connector |
US15/915,541 US10241279B2 (en) | 2014-03-05 | 2018-03-08 | Cable gripping structure and optical fiber connector |
Applications Claiming Priority (2)
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JP2014043046A JP6445769B2 (ja) | 2014-03-05 | 2014-03-05 | ケーブル把持構造体及び光ファイバコネクタ |
JP2014-043046 | 2014-03-05 |
Related Child Applications (2)
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US15/117,889 A-371-Of-International US20170082807A1 (en) | 2014-03-05 | 2015-03-05 | Cable gripping device and optical fiber connector |
US15/915,541 Continuation US10241279B2 (en) | 2014-03-05 | 2018-03-08 | Cable gripping structure and optical fiber connector |
Publications (1)
Publication Number | Publication Date |
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WO2015133574A1 true WO2015133574A1 (ja) | 2015-09-11 |
Family
ID=54055374
Family Applications (1)
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PCT/JP2015/056514 WO2015133574A1 (ja) | 2014-03-05 | 2015-03-05 | ケーブル把持構造体及び光ファイバコネクタ |
Country Status (5)
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US (2) | US20170082807A1 (ja) |
EP (1) | EP3115814A4 (ja) |
JP (1) | JP6445769B2 (ja) |
MX (1) | MX2016011018A (ja) |
WO (1) | WO2015133574A1 (ja) |
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GB2612540A (en) * | 2020-09-04 | 2023-05-03 | Nippon Tsushin Denzai Co Ltd | Optical connector |
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- 2015-03-05 US US15/117,889 patent/US20170082807A1/en not_active Abandoned
- 2015-03-05 EP EP15758040.8A patent/EP3115814A4/en not_active Withdrawn
- 2015-03-05 MX MX2016011018A patent/MX2016011018A/es unknown
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2018
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US20170082807A1 (en) | 2017-03-23 |
US20180196203A1 (en) | 2018-07-12 |
JP2015169729A (ja) | 2015-09-28 |
JP6445769B2 (ja) | 2018-12-26 |
MX2016011018A (es) | 2016-10-28 |
EP3115814A1 (en) | 2017-01-11 |
US10241279B2 (en) | 2019-03-26 |
EP3115814A4 (en) | 2017-10-11 |
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