WO2000073830A1 - Optical plug connector, method of manufacture and assembly tool - Google Patents
Optical plug connector, method of manufacture and assembly tool Download PDFInfo
- Publication number
- WO2000073830A1 WO2000073830A1 PCT/JP2000/003561 JP0003561W WO0073830A1 WO 2000073830 A1 WO2000073830 A1 WO 2000073830A1 JP 0003561 W JP0003561 W JP 0003561W WO 0073830 A1 WO0073830 A1 WO 0073830A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical
- cord
- fixing member
- ferrule
- optical fiber
- Prior art date
Links
Classifications
-
- 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
-
- 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
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3851—Ferrules having keying or coding 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
-
- 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
- G02B6/381—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
- G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
- G02B6/38875—Protection from bending or twisting
-
- 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
- G02B6/3889—Anchoring optical cables to connector housings, e.g. strain relief features using encapsulation for protection, e.g. adhesive, molding or casting resin
-
- 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
- the present invention relates to an optical connector plug attached to one end of an optical cord for connecting an optical cord containing an optical fiber, a method for manufacturing the same, and an assembling tool therefor.
- FIG. 18 shows the structure of a single-core optical cord 80 incorporating a tensile member.
- the optical cord 80 is composed of an optical fiber 81 composed of a central core part and an outer clad part, and an optical fiber core 85 composed of an optical fiber coating (inner jacket) 83 covering the optical fiber 81.
- the optical cord 80 is provided with a cord sheath 84 further covering the optical fiber core 85, and a tensile strength member 82 interposed between the optical fiber core 85 and the cord sheath 84. ing.
- Step 1-3 Temporarily fix 82 with tape or other temporary fixing means 105: Fix ferrule 106 to optical fiber 81, and polish end faces of optical fiber 81 and ferrule 106 1-4
- Fig. 19C Perform pre-assembly of parts (moving the front housing 107 from the front of the ferrule 106, and moving the coil spring 104 and the stop ring 103 from behind the ferrule 106 to connect them)
- Step 1 _ 5 (FIGS. 19D and 19E): Remove the temporary fixing means 105, move the caulking 102 forward, and fix the tensile strength member 82 with the caulking ring 102 and the stop ring 103.
- the cord sheath fixing device 101 By moving the cord sheath fixing device 101 forward and caulking the cord sheath fixing device 101 via the caulking ring 102, the cord sheath 84 of the optical cord 80 is fixed to the caulking ring 102 and the cord sheath fixing device 101.
- the steps are as follows, for example.
- Construction process 22 --- 55 Assembly of parts (The specified parts are joined from the front and back of the ferrule. Let it be).
- the tensile members 82 and the cord outer sheath 84 are directly fixed to the ferrule, for example, when the cord outer sheath 84 is pulled from behind, the external force is applied to the ferrule.
- the position of the ferrule may deviate from a predetermined position, resulting in deterioration of optical characteristics.
- the ferrules of the connected optical fibers are in close contact with each other, and there is a gap between the end faces of the optical fibers. I do not have to.
- the tensile member 82 and the cord sheath 84 are not fixed to the ferrule 106, but the other caulking 102, cord sheath fixture 101, stop ring It is fixed to 103, front housing 107, and knob 107. For this reason, when the optical cord 80 is pulled, the tensile force acts on these components and is received by a fixed part on the other side, such as a housing, which is coupled to the connector plug. Therefore, since the tensile force does not directly act on the ferrule 106, the connection characteristic does not deteriorate due to the displacement of the ferrule 106.
- Steps 1-5 “Fixing the tensile strength member and cord sheath” in Steps 1-5 is performed in “Fixing the ferrule to the optical fiber” in Steps 1-3 and “Pre-assembly of parts” in Steps 1-4.
- Steps 1-3 and Steps 1-5 are more complicated than other steps and are often performed manually.
- steps 1-4 are relatively easy to automate. Considering automatic assembly, etc., it is more efficient to make the process 1-3 and the process 1-15 continuous, and the cost of assembly work will be lower.
- the tensile strength member 82 and the outer sheath 84 are caulked 102, and the cord outer fixture 1 is provided.
- Steps 1 to 4 Since the assembly was fixed to the stop ring 103 in Steps 1 to 4 via 0 1, ie, the stop ring 103, Steps 1 to 4 were inevitably inserted before Steps 1 to 5 and Steps 1 to 3 and Steps 115 could not be a continuous step.
- the process 2-3 “fixing the ferrule to the optical cord” and the process 2-4 “fixing the tensile strength member and the outer skin to the ferrule” are continuous, thus improving the manufacturing efficiency.
- the optical cord 80 is pulled as described above, since external force may directly act on the ferrule and cause deterioration of the connection characteristics, in a communication device requiring reliability, There was a disadvantage that it could not be used.
- the tensile strength member 82 and the cord outer sheath 84 are spread over an outer peripheral portion such as a stop ring, and then the swaged member is used.
- a method of covering and fixing the cover is used. In this case, it is necessary that a portion for fixing the tensile strength member 82, such as a stop ring, to the cord outer cover 84 withstands the force of force crimping, so that these components may be formed of metal. Many.
- plug structures for automation or simplified assembly there are a structure in which a coil spring is incorporated in a ferrule and a structure in which these are incorporated in a housing.
- an adhesive is usually used to fix the optical fiber to the ferrule, but with the simplified optical connector as described above, a coil spring is incorporated into the ferrule or these are assembled into the housing.
- the optical cord / tensile member is fixed to a housing or the like with an adhesive. Therefore, in the case of such a simplified plug, it is necessary to pay close attention so that the adhesive does not stick to parts other than the ferrule or other than the predetermined member for fixing the tensile strength member.
- the present invention has been made in view of such a problem, and is an optical connector plug having a simple structure and a structure that does not deteriorate its characteristics even when subjected to an external force such as tension, and is easy to assemble. It is intended to provide an optical connector plug having a structure suitable for automatic assembly.
- the present invention provides a structure in which parts can be manufactured by molding plastic at low cost when mass production is required in the future, and an optical connector plug can be easily assembled and a manufacturing method capable of achieving automation can be provided.
- the purpose is to do.
- Another object of the present invention is to provide a tool for assembling an optical connector plug that can assemble various components without deteriorating optical characteristics and the like, and that can make assembly work more efficient and economical. I do. Disclosure of the invention
- an optical connector plug has a front housing, a rear housing, a ferrule, a coil panel, and an optical cord fixing member, and in addition to the ferrule and the coil panel, An optical cord fixing member for fixing the tensile member and the cord is accommodated in an internal through space created when the front housing and the rear housing are connected, and is held at each predetermined position. .
- the structure is such that the members can be incorporated by moving in the axial direction as much as possible.
- the optical connector plug of the invention according to claim 1 includes an optical fiber, an optical fiber core having an optical fiber coating for coating the optical fiber, a cord sheath for further coating the optical fiber core, and the optical fiber.
- An optical fiber for fixing and positioning an optical fiber of the optical cord the at least comprising a rear housing, a ferrule, a coil panel, and an optical cord fixing member arranged rearward in the optical axis direction of the housing; It is at least composed of a positioning fixing portion and a flange portion that is urged and held in contact with the coil panel in the front housing, and the coil panel contacts the flange portion of the ferrule on the front surface to urge the coil panel.
- a spring having a front end portion and a rear end portion for contacting the rear housing, and having a predetermined inner diameter and an outer diameter; and the optical cord fixing member is composed of one or a plurality of members.
- a member having locking means for locking, and the front wing is a member composed of one or more members, and includes a connecting means for connecting to the rear housing, a through hole, A hole having an inner surface larger than the outer shape of the optical fiber positioning / fixing portion for projecting the optical fiber positioning / fixing portion of the ferrule at least at the tip end of the through hole; and forming the hole following the portion.
- the rear housing is a member having one or more members, and the rear housing is a member formed of one or a plurality of members. At least a housing having a structure in which the front housing and the rear housing are joined by moving the rear housing forward, and the rear end side of the through hole is outside the optical cord.
- a fiber through-hole having an inner diameter larger than the diameter and smaller than an inscribed circle of the outer shape of the optical cord fixing member is formed, and the fiber through-hole is provided in front of the fiber through-hole, following the fiber through-hole.
- An optical cord fixing member holding portion having a hole shape and an inner shape larger than the optical cord fixing member and having fixing means for holding and fixing the optical cord fixing member is formed.
- a coil panel holding portion for holding the coil panel and urging the rear end of the coil panel is formed on the distal end side, and is perpendicular to the axis of the outer shape of the optical cord fixing member between the coil panel holding portion and the optical cord fixing member holding portion.
- This is a housing in which an optical cord fixing member introduction hole is formed with a through hole with an inner surface shape larger than a simple cross-sectional shape, and a through space is formed inside with the front housing and rear housing connected to each other.
- the tip of the optical fiber positioning and fixing portion of the ferrule protrudes from the tip of the front housing.
- the ferrule is held while the flange is biased forward by the front end of the coil panel, and the coil spring is rear housing.
- the optical cord fixing member having the optical cord fixed to the optical cord fixing member holding portion of the rear housing is urged forward by the coil spring holding portion. I do.
- the optical cord fixing member has a caulking seat and a caulking ring, and the force caulking seat has an inscribed circle larger than the outer diameter of the optical fiber.
- a member having a through hole, a tensile member fixing portion is formed outside, and the caulking is a member having a through hole having an inscribed circle having a diameter larger than the outer diameter of the tensile member fixing portion of the caulking seat. Then, the tensile strength member fixing part and the cord outer skin fixing part are formed inside, the optical fiber core wire is passed through the caulking seat, the caulking seat is brought to the end of the exposed cord outer skin, and then the exposed tensile strength member is removed.
- the caulking seat is fitted to the tension member fixing portion of the caulking seat, and the caulking seat is covered with the caulking seat along the tensile strength member and the end of the cord outer skin. Or By tightening, the tensile member and the cord outer skin are fixed to the caulking seat and the caulking ring. It is characterized by having made it.
- a fixing portion for bonding and fixing a tensile member is formed on an outer peripheral portion of the optical cord fixing member, and the tensile member is fixed to the optical code fixing member with an adhesive. It is characterized by the following.
- the outer cross-section of at least a part of the optical code fixing member has a polygonal structure in which corners are chamfered in a circular shape.
- a part of the inner diameter cross-sectional shape of the optical cord fixing member holding portion of the rear housing, and at least a part of the housing portion of the optical cord fixing member of the rear housing has a polygonal shape with rounded corners. It is a substantially circular shape having substantially the same size as the circumscribed circle of the cord fixing member, and more specifically, has a cross-sectional shape having a surface obtained by cutting at least a part of the circle. It is characterized in that a rotation preventing structure for holding the motor from rotating is formed.
- the optical cord fixing member is provided in a through hole communicating with the optical cord fixing member holding portion of the rear housing and on a side opposite to the optical cord through hole.
- a fixing member rotation restricting portion for restricting rotation of the fixing member, and the fixing member rotation restricting portion has a substantially circular inner surface shape at the rear end side, and more specifically, a cross section having a surface obtained by cutting at least a part of the circle.
- the inner surface shape at the front end side is continuous with the circumscribed circle of the optical code fixing member, and the inner surface shape at the intermediate portion located between the rear end side and the front end side is a continuation of these two inner surface shapes. It is characterized by a structure that has a shape that connects together.
- a convex portion is provided on an inner surface of a hole of the optical cord fixing member holding portion of the rear housing, and the optical cord fixing member is fixed to the optical cord.
- the optical cord fixing member is fixed to the rear housing by collision with the outer surface of the optical cord fixing member when housed in the hole of the member holding portion.
- the inner surface shape of the coil spring holding portion of the rear housing is substantially equal to the outer shape of the coil spring, and a convex portion is formed on the inner surface.
- the coil panel is fixed to the rear housing by interference between the outer surface of the coil panel and the convex portion when the coil panel is accommodated in the coil panel holding portion.
- the locking means for the rear housing and the front housing is provided on one of the rear housing and the front housing, and the locking projection is provided at the tip. And a locking hole provided in the other of the rear housing or the front housing and into which the locking projection is inserted.
- the rear housing has a rear housing body and a boot coupled to a rear portion of the rear housing body. And the boot are integrated in advance.
- the front housing includes a front housing main body and a cover for covering the front housing main body. It is characterized in that it has a structure in which the slider is integrated so as to be slidable in advance.
- the optical cord fixing member comprises: at least an optical cord is incorporated, and the tensile strength member and the cord outer cover are fixed to the optical cord fixing member. And a member having a circumscribed circle smaller than the inner diameter of the coil panel.
- the optical cord fixing member has a substantially polygonal cross section, and one or a plurality of inner surfaces of holes of the optical cord fixing member holding portion of the rear housing. In the place, substantially restricting the rotation of the polygonal optical cord fixing member It is characterized in that a flat wall surface is formed.
- the rotation of the optical code fixing member is restricted on the inner surface of the optical code fixing member introduction hole of the rear housing that communicates with the optical code fixing member holding portion.
- the height and the regulation area of the regulation portion continuously increase as going backward, and the rotation regulation portion has a substantially flat surface formed on the inner surface of the hole of the optical cord fixing member holding portion. It is characterized by being connected to the wall.
- a front housing a rear housing coupled with the front housing, a ferrule, a coil panel, and an optical cord fixing member, and has an optical fiber and an optical fiber coating for coating the optical fiber.
- An optical connector plug for connecting an optical cord having an optical fiber core, a cable sheath further covering the optical fiber core, and a tensile member interposed between the optical fiber core and the cord sheath, wherein the ferrule is Has an optical fiber positioning and fixing portion for positioning and fixing an optical fiber corresponding to the distal end portion of the optical fiber core of the optical cord, and a flange portion which is urged in contact with the coil spring.
- the tip for contacting and biasing the ferrule of the ferrule contacts the rear housing.
- the optical cord fixing member has a predetermined inner diameter and an outer diameter, and the optical cord fixing member has an outer diameter that can be inserted through the coil panel when the optical cord is fixed.
- the front housing has a hole having an inner diameter through which an optical cord can be inserted, and a locking means for locking the rear housing on at least a part of the outer peripheral surface, and the front housing has a locking mechanism for locking the rear housing.
- a middle hole having a flange holding portion for regulating forward movement of the flange portion of the ferrule and accommodating the flange portion, and a rear side hole having an inner diameter larger than the outer diameter of the coil panel.
- an optical cord through-hole having an inner diameter through which the optical cord can be inserted and through which the optical cord fixing member cannot pass is formed, and in front of the optical cord through-hole,
- An optical cord fixing member holding hole that includes fixing means for fixing the optical cord fixing member and houses the optical cord fixing member is formed following the optical cord through hole, and a tip of the second through hole
- a coil panel holding portion for holding the coil panel and urging the rear end of the coil panel is formed on the side, and an optical cord through which an optical code fixing member can be inserted between the coil panel holding portion and the optical code fixing member holding hole.
- Fixing member guide A hole is formed, and the front housing and the rear housing are connected to each other, and a through space is formed inside these housings.
- the tip of the optical fiber positioning and fixing portion of the ferrule to which the optical fiber is fixed is formed.
- the ferrule is held in a state where it protrudes from the front end of the front housing, the forward movement of the flange is restricted by the flange holding portion of the front housing, and the flange is urged forward at the front end of the coil panel.
- the through-space is formed such that the coil panel is urged forward by the coil panel holding portion of the rear housing, and the optical code fixing member to which the optical code is fixed is fixedly held in the optical code fixing member holding hole of the rear housing.
- coil panel and optical cord fixing member It is characterized by having done.
- an optical fiber having an optical fiber and an optical fiber coating covering the optical fiber Further, in a method of manufacturing an optical connector plug for connecting an optical connector tab to an optical cord having an outer sheath to be covered and a tensile member interposed between the optical fiber core and the outer sheath, the optical cord is provided with a rear housing.
- It is characterized by comprising four steps and a fifth step of connecting the front housing and the rear housing by moving in the front and rear directions so as to incorporate the code pre-assembly parts and the coil panel.
- the fourth step includes a flange portion of a ferrule in a through space formed inside when the front housing and the rear housing are joined to each other. Is urged forward by the coil panel, and is urged forward by the coil panel holding portion, and the ferrule and the optical cord fixing member relative to the state in which the optical cord fixing member is held in the optical cord fixing member holding hole of the rear housing.
- the ferrule is fixed to the distal end of the optical fiber so as to be separated from the fixed optical cord fixing member by an interval.
- the invention of claim 17 is characterized in that, in the invention of claim 15 or 16, in the fourth step, a process including terminal polishing of an end face of the ferrule is executed.
- the optical fiber and an optical fiber core having an optical fiber coating for coating the optical fiber, a cord sheath for further coating the optical fiber core, and the optical fiber core and the cord sheath
- a method for manufacturing an optical connector plug for connecting an optical connector plug to an optical cord having a tensile member interposed between the optical cord and the optical connector comprising: a first step of passing a rear housing and a coil panel through the optical cord; A second step of exposing the core wire and the tensile member, a third step of fixing the ferrule to the tip of the optical fiber core wire, and a relative position between the fixed ferrule and the ferrule.
- the optical cord fixing member is fixed to the optical cord by fixing the tensile member and the cord outer sheath by the optical cord fixing member so that the interval becomes a predetermined interval set in advance, and the optical cord fixing member and the ferrule are fixed.
- the fourth step is characterized in that a through-hole formed inside the front housing and the rear housing is provided with a flange portion of a ferrule. Is held forward by the coil spring, the ferrule and the coil spring are held, and the coil spring is urged forward by the coil panel holding portion of the rear housing to hold the optical cord fixing member in the optical cord fixing member holding hole of the rear housing.
- the optical cord fixing member is fixed to the optical cord so as to be separated from the fixed ferrule by a relative distance between the ferrule and the optical cord fixing member corresponding to the set state.
- a process including terminal polishing of an end surface of the ferrule is performed.
- the invention of claim 21 is characterized in that, in the invention of claim 18 or 19, in the fourth step, a process including terminal polishing of an end face of the ferrule is executed.
- an optical fiber and an optical fiber core having an optical fiber coating for coating the optical fiber, a cord outer sheath for further coating the optical fiber core, and the optical fiber core and the cord outer cover
- the ferrule and the optical cord fixing member for fixing the optical cord are separated from the optical cord having a tensile member interposed between the ferrule and the optical cord fixing member by a predetermined interval set in advance.
- an optical connector fixing member holding means for holding an optical cord fixing member to which the tensile strength member of the optical cord and the cord outer sheath are fixed, and an optical cord.
- a ferrule holding means for positioning and holding the ferrule so that the ferrule is separated from the optical cord fixing member held by the fixing member holding means by a distance corresponding to the predetermined interval;
- the optical fiber of the optical cord is bonded and fixed to the ferrule held by the holding means.
- the ferrule and the optical cord fixing member for fixing the optical cord are separated from the optical cord having a tensile member interposed between the ferrule and the optical cord fixing member by a predetermined interval.
- An assembling tool for an optical connector plug used for fixing wherein a ferrule holding means for holding a ferrule to which an optical fiber of the optical cord is adhered and fixed, and the optical cord fixing to a ferrule held by the ferrule holding means.
- an optical cord fixing member holding means for holding the optical cord fixing member held by the optical cord fixing member holding means It is characterized by the following.
- an optical fiber having an optical fiber and an optical fiber coating covering the optical fiber, a cord sheath further covering the optical fiber core, and the optical fiber core and the cord sheath
- An assembling tool for an optical connector plug for assembling a tab lug comprising: At the front side of the ferrule of the assembly part, a front housing holding means for holding a front housing, an assembly holding means for holding a ferrule or an optical cord fixing member of the code pre-assembly part, and an optical code of the code pre-assembly part are inserted.
- a rear housing provided with a coil panel and provided on the rear side of the optical cord fixing member of the code pre-assembly component, and a rear housing holding means movable in the front-rear direction;
- a frictional resistance applying means for applying a frictional resistance to the cord, and by moving the rear housing holding means forward, the front, the optical cord fixing member, and the coil spring are built in.
- Engage the rear housing with the housing It is characterized by the following.
- an optical fiber and an optical fiber core having an optical fiber coating covering the optical fiber, a cord outer sheath further coating the optical fiber core, and the optical fiber core and the cord outer cover
- An optical connector plug is formed by using a cord pre-assembly component in which a ferrule and an optical cord fixing member for fixing the optical cord are fixed so as to be separated from each other by a predetermined distance with respect to an optical cord having a tensile strength member interposed between them.
- An assembling tool for an optical connector plug for assembling comprising: an assembly holding means for holding a ferrule of the code brim assembly component or an optical cord fixing member; and a rear having an optical cord of the code brim assembly component inserted therein and a coil spring.
- an optical fiber having an optical fiber and an optical fiber coating covering the optical fiber, a cord outer sheath further covering the optical fiber core, and the optical fiber core and the cord outer cover.
- An optical connector plug connected to an end of an optical cord having a tensile member interposed between the ferrule and a ferrule having a flange and fixing an optical fiber exposed at an end of the optical cord.
- An optical cord fixing member for fixing the exposed tensile strength member and the cord outer cover of the optical cord at the rear side of the ferrule, and a coil panel whose end is in contact with the flange portion of the ferrule; And a through hole, and a ferrule to be loaded into the through hole is held inside the housing so that the tip of the ferrule projects from the front opening.
- a front housing having a portion, a through hole, a panel locking portion for locking the rear end of the coil panel mounted on the front side of the through hole, and an optical cord inserted from the front to the rear of the through hole.
- a rear housing engageable with the front housing, the optical cord fixing member being capable of passing through the inside of the coil panel, and being provided in the rear housing. The ferrule, the coil panel, and the optical cord fixing member are accommodated and fixed inside the engagement between the front housing and the rear housing.
- the order of the manual processing of the optical cord terminal, the fixing of the optical cord, and the fixing of the optical fiber to the ferrule may be changed. Since the processes can be integrated into a single process, automation of the assembly of the optical connector plug, which has been relatively difficult so far, can be easily realized, and the efficiency of the assembly of the optical connector plug can be improved. In addition, in assembling the optical connector plug, the operation related to the assembly can be realized by a simple operation of moving the components back and forth in the optical axis direction, so that the assembly can be realized by a relatively simple automatic assembling machine and automation is easy. There are advantages that are possible.
- the fixing of the outer cover of the optical cord and the tensile strength member is realized by individual members independent of the housing body (the front housing and the rear housing).
- the housing is not subjected to caulking force, and therefore the housing main body, which requires a complicated shape, can be realized by molding such as plastic. Therefore, there is an advantage that the cost of parts can be reduced.
- the optical cord fixing member has an extremely simple structure, so that it can be realized at low cost. Furthermore, since the optical cord fixing member can pass through the inside of the coil panel, it is possible to move the coil panel back and forth in the optical axis direction of the optical cord fixing member after fixing the optical cord to the optical cord fixing member. Thereby, the optical cord can be fixed before the coil spring is arranged at a predetermined position.
- the external force acts on the rear housing via the optical cord fixing member, and via the front housing connected thereto, the fixing of the mating side connected to the plug. It can be received by a part such as a housing or an adapter. Therefore, since this force does not act directly on the ferrule, there is no deterioration in the connection characteristics due to the misalignment of the ferrule.
- the optical connector plug of the present invention has a structure in which the ferrule can be fixed to the optical fiber in a state where it is separated from other components or in a state where no other components are present. Can easily perform this task.
- the force seat may be a cylindrical part such as a metal, and the caulking is also a substantially cylindrical metal part, all of which can be realized at low cost.
- the cord outer cover can be firmly fixed, and a highly reliable optical connector can be provided.
- the tensile strength member is attached to the tensile strength member fixing portion on the outer surface of the caulking seat, the caulking ring is applied thereto, and the caulking is then performed. It can be done with a very simple work of fixing the cord and the sheath.
- the rotation preventing structure is provided between the optical cord fixing member and the rear housing. Therefore, even if the optical cord is twisted, for example, the rotation is prevented, so that the inside of the optical connector plug is prevented. As a result, the optical cord does not rotate and twist, and the optical fiber is not broken, so that a highly reliable optical connector plug can be provided.
- a guide taper wall surface is provided on the inner wall surface of the rear housing to guide the optical cord fixing member to a predetermined rotation angle position where the optical code fixing member is to be prevented from rotating. Therefore, the optical cord fixing member can be guided to a predetermined rotation angle position for preventing rotation only by the operation of relatively moving the optical cord fixing member and the rear housing in a direction approaching in the optical axis direction. Since this operation is completed only by moving the optical cord fixing member and the rear housing relatively in the optical axis direction, there is an advantage that workability is good and automation is easy.
- the optical cord fixing member can be reliably arranged and held at a predetermined position in the rear housing only by relatively moving the optical cord fixing member and the rear housing in the optical axis direction.
- the coil panel is inserted into the coil panel holding portion of the rear housing, and the coil panel is fixed.
- the rear housing and the front housing are locked by the locking projections and the locking holes, so that the both can be easily combined.
- the rear housing is composed of the rear housing main body and the boot connected to the rear portion of the rear housing main body, and the rear housing main body and the boot are integrated in advance, so that the rear housing and the boot are integrally formed.
- the rear housing main body and the boot are integrated in advance, so that the rear housing and the boot are integrally formed.
- the front housing body and the slider are integrated so as to be slidable in advance, the number of parts in assembly can be reduced, assembly can be simplified, and automation can be facilitated.
- the optical cord fixing member is a member that can be inserted through the coil panel in a state where at least the optical cord is incorporated and the tensile strength material and the cord outer cover are fixed to the optical cord fixing member. After being fixed to the fixing member, the coil panel can be moved back and forth in the optical axis direction of the optical cord fixing member, whereby the optical cord can be fixed before the coil spring is arranged at a predetermined position. Can be.
- the relative interval is maintained at a predetermined value set in advance.
- the ferrule and the optical cord fixing member can be easily fixed to the optical cord, so that the step of measuring the interval can be reduced, the efficiency of assembly work can be reduced, the cost can be reduced, and the assembly can be further improved.
- Optical connector plugs can have good optical characteristics.
- the engagement operation of the front housing and the rear housing is performed while applying frictional resistance or tensile force to the optical cord, so that the optical cord fixing member, the coil spring, the ferrule, etc.
- the built-in parts can be securely held and locked at required positions in the front housing and the internal space of the rear housing, and the efficiency of assembly work and the cost reduction can be realized.
- FIG. 1 is a sectional view showing an assembled structure of an optical connector plug according to an embodiment of the present invention, in which an upper portion is cut away.
- FIG. 2 is a cross-sectional view of another embodiment of the optical connector plug of the present invention, showing a structure after assembling, with an upper portion cut away.
- 3A to 3D are views showing an embodiment of the structure of the ferrule.
- FIG. 4 is a diagram showing one embodiment of the structure of the coil panel.
- 5A to 5E are views showing one embodiment of an optical cord fixing member.
- 6A to 6D are views showing one embodiment of the front housing.
- FIG. 7 is a view showing another embodiment of the front housing.
- 8A to 8D show the front housing of FIG. 7 in more detail.
- FIGS 9A to 9I are views showing an embodiment of the rear housing.
- FIGS. 108 to 100C are views showing other embodiments of the optical code fixing member.
- Figures 11A to 11C show the state where coil springs, boots, etc. are incorporated in the rear housing. It is sectional drawing which shows a state.
- FIGS. 12A to 12C, 13A to 13C, 14 and FIGS. 15 to 15C are process diagrams illustrating a method for manufacturing an optical connector plug according to the present invention. is there.
- FIG. 16A to FIG. 16C and FIG. 17 are process diagrams for explaining another embodiment of the method for manufacturing an optical connector plug according to the present invention.
- FIG. 18 is a view showing the structure of an optical cord connected to the optical connector plug of the present invention.
- FIG. 198 to FIG. 19H are process diagrams showing a procedure for manufacturing a conventional optical connector plug.
- 2OA to 20E are process diagrams showing an example of a procedure for manufacturing an optical connector plug according to the present invention.
- FIGS. 21A and 21B are views showing an example of an assembling tool used when assembling the optical connector plug of the present invention.
- FIGS. 22A and 22B are diagrams showing another example of an assembling tool used when assembling the optical connector plug of the present invention.
- 23A to 23D are views showing another example of an assembling tool used when assembling the optical connector plug of the present invention.
- 24A to 24D are views showing another example of an assembling tool used when assembling the optical connector plug of the present invention.
- FIG. 25 is a view showing another example of an assembling tool used when assembling the optical connector plug of the present invention.
- FIGS. 1 and 2 partially show an embodiment in which the present invention is applied to an MU-type optical connector plug. It is shown in cross section.
- FIG. 1 shows a connector plug 9 of a type that is connected to an adapter or the like with a locking projection K
- FIG. 2 shows a connector plug 9 of a push-pull connection structure.
- the optical connector plug 9 shown in FIGS. 1 and 2 is for forming the end of the single-core optical cord 80 shown in FIG.
- the optical cord 80 includes an optical fiber core 85 composed of an optical fiber 81 and an optical fiber coating (inner jacket) 83, a cord outer sheath 84, and a tensile member 82.
- the optical connector plug 9 shown in FIGS. 1 and 2 includes a front housing 1, a rear housing 2, which is coupled to the front housing 1, and is arranged rearward of the front housing 1 in the optical axis direction, a ferrule 3, and a coil spring. 4 and an optical cord fixing member 5.
- 3A to 3D show the structure of ferrule 3.
- 3B is a left side view of FIG. 3A
- FIG. 3C is a right side view of FIG. 3A
- FIG. 3D is a cross-sectional view of FIG. 3A.
- the ferrule 3 is composed of an optical fiber positioning / fixing portion 31 for fixing / positioning the optical fiber 81 to a hole formed therein, for example, with an adhesive, and a front housing. It has a flange portion 32 that is in contact with the coil panel 4 and is urged forward in the optical axis direction and held therein, and a core wire guide hole 33 into which the optical fiber core 85 is inserted.
- FIG. 4 shows the structure of the coil spring 4.
- the coil spring 4 has a front end 41 for contacting and biasing the ferrule 3 and a rear end 42 for contacting the rear housing 2. It has an inner diameter Di and an outer diameter Do.
- FIG. 5A to 5E show the structure of the optical cord fixing member 5.
- the optical cord fixing member 5 is a member composed of one or a plurality of members. It has a structure 51 for fixing the tensile strength member 82 of 4 or Z and the optical cord 80.
- the optical cord fixing member 5 has an outer diameter D5o smaller than the inner diameter Di of the coil panel 4 after the optical cord 80 is assembled and fixed.
- the optical cord fixing member 5 can be inserted into the coil spring 4.
- the optical cord fixing member 5 has a structure configured to have an inner diameter D 5 i larger than the outer diameter D f of the optical fiber core wire 85, the tensile strength member 82 of the optical cord 80 and the cord Even after the outer sheath 84 is fixed to the optical cord fixing member 5, the optical fiber core 85 is not prevented from moving in the axial direction by the optical cord fixing member 5. That is, when the cord outer sheath 84 and the tensile member 82 are firmly fixed to the optical cord fixing member 5, even if the cord outer sheath 84 is pulled from behind, the optical fiber core is not used. No force is applied to 85 itself, and the optical fiber core 85 does not break.
- the optical fiber core 85 is not fixed, if the optical fiber is a so-called loose type optical cord that is not fixed in the axial direction with respect to the cord sheath 84 and the tensile member 82, Even when the ferrule 3 fixing the optical fiber core wire 85 is slightly moved in the axial direction within the optical connector plug 9 when the optical connector plug is used, the ferrule 3 moves in accordance with the movement of the ferrule 3.
- the optical fiber core 85 can move within the optical cord 80, so that the optical fiber core 85 is not bent or excessively pulled in the optical connector plug 9.
- the optical cord fixing member 5 is provided with an engaging portion 511 for engaging the inner surface of the rear housing 2 at least at a part of the outer peripheral surface. As will be described later, this portion 5 1 1 is locked by a convex portion 2 4 1 formed on the inner peripheral surface of the optical code fixing member holding portion (optical code fixing member holding hole) 2 2 2 of the rear housing 2. You.
- FIGS. 6 to 8 show examples of the front housing.
- Fig. 6 shows the locking projections shown in Fig. 1.
- the front housing 1 corresponding to the mating type connector plug 9 is shown.
- 6C is a left side view of FIG. 6A
- FIG. 6D is a right side view of FIG. 6A.
- FIGS. 7 and 8 show a front housing 1 'corresponding to the connector plug 9 having the push-pull connection structure shown in FIG. 8C is a left side view of FIG. 8A
- FIG. 8D is a right side view of FIG. 8A.
- the front housing 1 (or 1 ′) shown in FIGS. 6 to 8 has a through-hole 11, and the optical fiber positioning and fixing portion 3 1 (see FIG.
- a hole 12 having an inner diameter larger than the outer diameter of the positioning fixing portion 31 is provided.
- the front housing 1 (or 1 ′) is formed following the hole 12 so as to restrict a part of the flange portion 3 2 of the ferrule 3 so as to prevent the ferrule 3 from moving forward.
- the ferrule pop-out prevention structure has a step for restricting the forward movement of the flange portion 32 of the ferrule 3 between the holes 12 and 13. This is achieved by providing it at the boundary.
- FIG. 9A to 9I show the structure of the rear housing 2.
- Fig. 9D is an enlarged view of part A of Fig. 9A
- Fig. 9E is an enlarged view of part B of Fig. 9A
- Fig. 9F is an enlarged view of part C of Fig. 9A
- Fig. 9G is KD-IXD of Fig. 9A.
- 9H is a cross-sectional view of IXE-IXE in FIG. 9A
- FIG. 9I is a cross-sectional view of IXF-KF in FIG. 9A.
- the rear housing 2 has locking projections 21 serving as locking means for coupling with the locking holes 15 of the front housing 1 and a through hole 22.
- an optical cord through hole 2 2 3 having an inner diameter D 2 2 3 i larger than the outer diameter D c of the optical cord (FIG. 18) is formed, and
- the rear end of the optical cord 80 fixed to the optical cord fixing member 5 is inserted.
- This optical cord An optical cord fixing member holding portion 222 having a hole shape larger than the optical cord through hole 222 is formed in front of the through hole 222.
- the optical code fixing member 5 having the optical code 80 fixed to the optical code fixing member holding portion 222 is held and fixed.
- the force applied to the cord 80 is applied to the optical cord fixing member holding portion 2 2 2 via the optical cord fixing member 5, The rear housing 2 is further pulled through this portion. Therefore, in a state where the optical connector plug 9 is assembled, that is, in a state where the rear housing 2 is connected to the front housing 1 by the locking portion 21, the force when the cord 80 is pulled will be less than that of the optical connector plug 9.
- the coil spring 4, the optical fiber core 85, and the ferrule 3 held inside the housing are not applied to the joint between the front housing 1 and the rear housing 2.
- a coil panel holding portion 22 1 is formed at the tip end of the through hole 22 to hold the coil spring 4 during assembly and to attach the optical connector plug 9 to the rear end portion 42 of the coil spring 4 in an assembled state. Energize by compressing forward. Further, a through hole having an inner surface shape larger than a cross-sectional shape perpendicular to the axis of the outer shape of the optical cord fixing member 5 is provided between the coil panel holding portion 22 1 and the optical cord fixing member holding portion 22 2, that is, the optical cord fixing member 5. An optical cord fixing member introduction hole 224 having a hole diameter larger than the final outer diameter of the fixing member 5 is formed. With this structure, it becomes possible to guide the optical cord fixing member 5 from the distal end side to the optical cord fixing member holding portion 222 of the rear housing 2 and insert it.
- the optical connector plug 9 of the present invention has a structure in which the through space 6 is formed inside the front housing 1 and the rear housing 2 in a state where they are connected to each other.
- the ferrule 3 and the coil spring 4 are held in a state where the flange portion 32 of the ferrule 3 is urged forward by the distal end portion 41 of the coil spring 4 in the through space portion 6, and the coil spring 4 Is the rear housing
- the coil panel 4 is compressed and urged forward by abutting against the coil spring abutting portion 23 of the coil spring holding portion 2 2 1 of FIG.
- the ferrule 3 is urged forward by a predetermined force and connected.
- the ferrule 3 can be held inside the front housing 1 and the rear housing 2 that have been installed.
- the optical code fixing member 5 is held by the optical code fixing member holding portion 22 of the rear housing 2, and the bracket optical code fixing member 5 is locked by the optical code fixing member locking portion 24.
- FIG. 5B is a left side view of FIG. 5A
- FIG. 5C is a view of the force seat 52
- FIG. 5D is a view of the caulking machine 53
- FIG. 5E is a right side view of FIG. 5D. It is.
- the optical cord fixing member 5 is composed of two members, a force seat 52 and a caulking ring 53.
- the force-sinking seat 52 has a through hole 5 21 with an inner diameter (inscribed circle) D 5 i that is larger in cross-section than the outer diameter D f (FIG. 18) of the optical fiber core 85, and has an external tensile strength.
- the member fixing portion 5222 is formed.
- a through hole 531 having an inner diameter (inscribed circle) D51i larger than the outer diameter D52o of the tensile member fixing portion 522 of the force-sinking seat 52 is formed.
- a tensile strength member fixing portion 532 and a cord outer skin fixing portion 5333 are formed inside.
- the optical fiber core wire 85 was passed through the through hole 5 21 of the force-sinking seat 52, and the force-screwing seat 52 was brought close to the end 841 of the cord jacket 84.
- the tensile member 8 2 is put on the tensile member fixing portion 5 2 2 on the outer surface of the force-sinking seat 52, and the force-screwing seat 52 along the tensile member 82 and the cord outer end 8 4 2 are covered. Cover 5 3 as above.
- the tension member fixing part 5 3 2 of the caulking 5 3 By crimping the cord outer cover fixing portion 5 33, the tensile member 82 and the cord outer cover 84 are fixed to the optical cord fixing member 5 composed of the force seat 52 and the caulking ring 53.
- a structure 51 for fixing the cord sheath 84 and the tensile member 82 of the optical cord 80 is a member composed of one or a plurality of members, and is used. Any member may be used as long as it has a structure for fixing the cord outer cover 84 and / or the tensile member 82 according to the structure of the optical cord.
- the dimensions are such that, after at least the optical cord 80 is assembled and fixed, the inscribed circle has a diameter smaller than the inner diameter of the coil spring 4 and a diameter larger than the outer diameter of the optical fiber core 85. What is necessary is just to have a circle. That is, as described above, when the optical code 80 is fixed by caulking, the dimension before caulking does not necessarily have to satisfy the above condition, and it suffices to satisfy the above condition after caulking.
- optical cord fixing member 5 may be a member having a locking portion 511 for locking the inner surface of the rear housing 2 on at least a part of the outer peripheral surface.
- FIG. 10 shows another example of the structure 51 for fixing the cord outer cover 84 and the tensile strength member 82 with respect to the optical cord fixing member 5.
- FIG. 10A a fixing portion 55 for bonding and fixing the tensile strength member 82 to the outer peripheral portion of the optical cord fixing member 5 is formed.
- FIG. 10B shows a structure in which the tensile member 82 is fixed to the optical cord fixing member 5 with an adhesive 56.
- FIG. 10C shows a structure in which the inner surface is fixed to the optical cord fixing member 5 by a heat-shrinkable tube 57 coated with a heat-soluble adhesive.
- These fixing structures 51 also have a circumscribed circle having a diameter smaller than the inner diameter of the coil panel 4 and a size of the optical fiber core 85 at least when the optical cord 80 is assembled and fixed. What is necessary is just to have an inscribed circle of a diameter larger than an outer diameter.
- the optical cord fixing member 5 to which the optical cord 80 is fixed has a structure that does not rotate within the optical connector plug 9 due to such a force.
- the outer shape of the optical cord fixing member 5 has a polygonal shape in which the corners are chamfered in a circular shape, in other words, a part (for example, a rear end) thereof.
- the outer cross-section is polygonal with rounded corners.
- the polygonal optical code fixing member 5 can fit a part of the inner diameter cross-sectional shape of the optical cord fixing member holding portion 222 of the rear housing 2 and The shape is such that the rotation can be prevented. That is, as shown in FIGS. 9F and 9I, the inner diameter cross-sectional shape of the optical cord fixing member holding portion 222 is substantially the same as the circumscribed circle of the optical cord fixing member 5 having a polygonal shape with chamfered corners. It is approximately circular in size, and has a shape in which a substantially arcuate portion 2 221 having a substantially flat wall surface 222 is added to two sides.
- a part of the part corresponding to the part accommodating the optical cord fixing member 5 when assembled is part of the inner diameter cross-sectional shape of the optical cord fixing member holding part 222 of the rear housing 2.
- a plane 2 2 2 2 which is substantially circular and has the same size as the circumscribed circle of the optical cord fixing member 5 which has a polygonal shape with chamfered corners, and in which at least a part of the circle is cut out.
- the flat portion of the polygonal optical cord fixing member 5 becomes the flat portion 222 of the optical cord fixing member holding portion 222. Will be in contact. Therefore, when the optical cord fixing member 5 to which the optical cord 80 is fixed is incorporated into the optical cord fixing member holding portion 222 of the rear housing 2, the optical cord fixing member 5 moves relative to the rear housing 2. Very slight angle The rear housing 2 is held so as to rotate only at a predetermined angle. Therefore, the rotation is prevented, so that the optical fiber core 85 is not twisted in the optical connector plug 9.
- the optical cord fixing member 5 when the optical cord fixing member 5 is provided with a rotation preventing means for holding the optical cord fixing member 5 at a predetermined rotation angle position with respect to the optical cord fixing member holding portion 222 of the rear housing 2, the optical cord fixing member 5 is moved from the front through the through hole 22 of the rear housing 2 to the optical cord fixing member holding portion 222, the optical cord fixing member 5 is moved to the optical cord fixing member holding portion 22 in the rear housing 2. It is necessary that both are relatively arranged at a predetermined angle so that up to 2 can be inserted.
- the optical cord fixing member 5 having a polygonal outer shape with chamfered corners is provided with an optical cord fixing member holding portion 222 having a hole shape in which two side surfaces are cut straight. It is necessary to position the rotation angle and insert it so that it can be inserted only by moving in the direction.
- a pair of rotation restricting portions 2 having a tapered surface for restricting the rotation of the optical code fixing member 5 in the optical cord fixing member introduction hole 2 24 leading to the optical cord fixing member holding portion 222 of the rear housing 2.
- Forming 24a The height and the regulating area of the regulating portion 2 224 a continuously increase as going backward, and the above-mentioned substantially flat wall surface 2 formed on the inner surface of the optical cord fixing member holding hole 222 is formed. 2 2 2 is connected.
- the inner diameter of the optical cord fixing member introduction hole 222 is substantially the same as the circumscribed circle of the optical cord fixing member 5.
- the optical cord fixing member 5 is moved to the optical cord fixing member holding portion 2 2 2 9A, 9E, etc., a through hole communicating with the optical cord fixing member holding portion 222 of the rear housing 2 and the optical cord ⁇ ⁇ as shown in FIGS. 9A and 9E.
- An optical cord fixing member introduction hole 2 24 is formed in the through hole on the opposite side of the through hole 2 2 3, and its inner surface has a substantially circular shape, and more specifically, a flat surface obtained by cutting at least a part of the circle.
- the cross-sectional shape 2 2 4 1 is continuously connected to the shape 2 2 4 2 connected to the circumscribed circle of the optical cord fixing member 5.
- the locking portion 5 1 1 of the outer shape (polygonal shape) of the optical cord fixing member 5 is provided on a part of the inner surface of the optical cord fixing member holding portion 22 of the rear housing 2.
- a plurality of convex portions that are plastically or elastically deformed by contact (interference) with the optical cord fixing member 5 when the optical cord fixing member 5 is accommodated in the optical cord fixing member holding portion 222.
- the structure is such that the optical cord fixing member 5 is deformed by being pressed by the locking portion 5111 on the outer surface of the optical cord fixing member 5, thereby preventing the optical cord fixing member 5 from moving particularly forward.
- the convex portion 241 is formed into an appropriate shape so that the rotation of the optical cord fixing member 5 is made. Can be prevented.
- the inner surface shape of the coil panel holding portion 22 1 of the rear housing 2 is a circular shape having a diameter D 2 21 i substantially equal to the outer diameter of the coil panel 4.
- the coil panel 4 is connected to the rear housing 2. Can be fixed easily. According to this configuration, as shown in FIG. When the coil spring 4 is inserted into the coil spring holding portion 22 1 of the jing 2, the coil spring 4 is fixed by the convex portion and integrated. By doing so, the coil panel 4, which is difficult to handle, does not need to be treated as an individual component, and assemblability is improved.
- a rear housing 2 ′ is composed of two members, a rear housing body 2 and a boot 25 connected to a rear portion of the body 2, and the rear housing body 2 and the boot 25 are connected to each other.
- assemblability can be improved as compared with the case where these are made into individual parts.
- FIG. 11C by previously incorporating the coil spring 4 and the boot 25 into the rear housing body 2, the handling of parts during assembly can be further improved.
- the boot 25 is designed to prevent the optical fiber from being bent excessively even when the cord of the optical connector plug is bent, and to prevent loss or breakage, that is, to provide strength against bending. Usually, it is made of a material that is relatively easy to bend.
- the front housings 1 and 1 'depending on the mating structure such as an adapter for connecting a plug.
- the features of the present invention are not impaired at all even if the connection structure corresponds to a connector having a so-called push-pull connection structure.
- the front housing 1 ′ is composed of two members: the front housing body 1 shown in FIG. 6 and the like, and a knob 16 that covers the front housing body 1. .
- knob 16 By attaching the knob 16 to the front housing body 1 in advance for efficient assembly, these two parts are slidably integrated in advance. By doing so, the assemblability is improved. Note that, as is common practice, the front housing main body 1 and the knob 16 are not assembled in advance but are provided as separate parts, and after all other assembling steps are completed, the knob 1 is attached to the front housing main body 1. 6 may be attached.
- the method of manufacturing the connector plug according to the present invention will be described with reference to FIGS.
- the optical connector plug 9 of the present invention has a structure optimal for the manufacturing process described below. By using the structure of the optical connector plug 9 of the present invention, the manufacturing process of the present invention can be suitably realized.
- the assembly can be performed basically on the basis of moving each component in the axial direction.
- FIGS. 12 to 12C the manufacturing process in a preferred embodiment of the present invention will be described with reference to FIGS. 12 to 12C, FIGS. 13 to 13C, FIGS. 14 and 15 to 15C. It will be described in detail.
- the cord outer sheath 84 of the optical cord 80 is peeled off by a predetermined length to expose the optical fiber core 85 and the tensile member 82. Further, the tensile member 82 is cut at a predetermined length. Note that the cutting of the tensile strength member 82 may be performed before step 5 described later, or may be performed in step 3 or step 4.
- the optical fiber 81 is exposed so that the relative distance from the optical cord fixing member 5 becomes a predetermined distance L, and the ferrule 3 is moved.
- the optical fiber core 85 is fixed to the optical fiber 81 at the end.
- the front housing 1 and the rear housing 2 are connected to each other, and the flange 3 2 of the ferrule 3 is urged forward by the coil spring 4 into the ferrule 3 in the through space 6 formed therein.
- the coil panel 4 is held, and the coil spring 4 is urged forward by the coil spring abutting portion 23 of the coil spring holding portion 22 of the rear housing 2 to emit light to the optical cord fixing member holding portion 22 of the rear housing 2.
- the ferrule 3 is fixed to the optical fiber 81 such that the ferrule 3 is separated from the optical cord fixing member 5 by a relative distance L between the ferrule 3 and the optical cord fixing member 5 corresponding to the state where the cord fixing member 5 is held.
- the end of the ferrule 3 is subjected to a predetermined terminal treatment such as polishing of an end face according to desired characteristics.
- a cord pre-assembly component having the optical cord fixing member 5 to which the optical cord 80 and the tensile member 82 are fixed, and the ferrule 3 to which the optical fiber 81 is positioned and fixed. Make up 7.
- the front housing 1 ′ is inserted into the code pre-assembly part 7 shown in FIG. 14 from the front in the optical axis direction as shown in FIG. 15A, and into the optical axis direction as shown in FIG. 15B.
- the locking portions 15 of the front housing 1 ′ and the locking portions 21 of the rear housing 2 ⁇ ⁇ are engaged to engage each other housing.
- the optical connector plug 9 is completed.
- FIG. 20 shows a summary of the manufacturing steps described above.
- the assembled optical connector plug has good characteristics. Cannot be realized.
- the optical code fixing member 5 when the distance is shorter than the predetermined distance L, the optical code fixing member 5 is located on the distal end side from the predetermined position of the optical code fixing member holding portion 222 in the optical connector plug 9. For this reason, play occurs in which the optical cord fixing member 5 can move backward in the optical cord fixing member holding portion 222. Therefore, when the optical cord 80 is pulled from behind, the optical cord fixing member 5 moves backward. As a result, the optical fiber
- the ferrule 3 fixed to the end of the wire 5 is also pulled backward at the same time, and the connection may be disconnected, leading to a possibility of deterioration of characteristics.
- the optical fiber core 85 is largely bent, and the bending loss of the optical fiber 81 may be increased, or the optical fiber 81 may be broken in some cases.
- an assembly tool for fixing the ferrule 3 and the optical cord fixing member 5 is used.
- This assembly tool is an assembly tool used when assembling the optical connector plug 9, A means for holding the ferrule 3, a means for holding the optical cord fixing member 5 to which the cord cover 84 or the tensile member 82 of the optical cord 80 is fixed in advance, and a means for fixing the optical cord fixing member 5
- a means for holding the ferrule 3 a means for holding the optical cord fixing member 5 to which the cord cover 84 or the tensile member 82 of the optical cord 80 is fixed in advance, and a means for fixing the optical cord fixing member 5
- the disposing means includes a ferrule in a state in which the flange portion 32 of the ferrule 3 is urged forward by the coil panel 4 in a through space portion 6 formed inside the front housing 1 and the rear housing 2 in a state where the front housing 1 and the rear housing 2 are connected to each other. 3 and the coil panel 4 are held, and the coil spring 4 is urged forward by the coil spring butting portion 23 of the coil spring holding portion 22 of the rear housing 2 to hold the optical cord fixing member holding portion 2 2 of the rear housing 2.
- the ferrule 3 is fixed to the optical fiber 81 so that the ferrule 3 and the optical cord fixing member 5 corresponding to the state where the optical cord fixing member 5 is held in 2 are separated from the optical cord fixing member 5 by the relative distance L. I do.
- Figure 21 shows an example of such an assembly tool.
- This assembling tool enables the ferrule 3 to be easily fixed at a position of a relative distance L with respect to the optical code fixing member 5 previously fixed to the optical code 80.
- the assembling tool includes an optical cord fixing member holding jig 210 for holding an optical cord fixing member 5 to which a tensile member 82 of an optical cord 80 and a cord outer sheath 84 are fixed, and a ferrule holding for holding a ferrule 3.
- the jig 220, the optical cord fixing member holding jig 210, and the ferrule holding jig 220 are positioned such that the jigs 210, 220 are separated by a predetermined distance. And a positioning table 200.
- the optical cord fixing member holding jig 210 accommodates the concave portion 211 for accommodating the optical fiber core 85, the concave portion 121 for accommodating the optical cord fixing member 5, and the optical cord 80.
- a recessed portion 2 13 is formed.
- the boundary between these recesses 2 1 1 and 2 1 2 and the recess 2 1 Steps 2 14 and 2 15 are formed at the boundary between 2 and 2 13, and the movement of the optical cord fixing member 5 in the front-rear direction is restricted.
- the ferrule holding jig 220 has a concave portion 222 having a step portion 222 for restricting the rearward movement of the flange portion 32 of the ferrule 3. Ferrule 3 is stored and held.
- the two jigs 210 and 220 are fixed on a positioning table 200.
- the ferrule 3 Dimensions such as the distance between the step portions 214 and 225 are set so that the optical cable fixing member 5 is separated from the optical cord fixing member 5 by a relative distance L.
- an optical cord fixing member 5 fixes an outer cover 84 and a tensile strength member 82 of an optical cord 80, and the optical cord fixing member 5
- the optical cord 80 is set in the jigs 210 and 220 so as to be housed and held in the concave portion 212 of the jig 210.
- the ferrule 3 is passed through the exposed end of the optical fiber 81 of the optical cord 80, and the ferrule 3 of the ferrule 3 is inserted into the step portion 2 25 of the jig 220.
- the optical fiber 81 is positioned and fixed to the ferrule 3 by positioning so that the part 32 is brought into contact.
- the ferrule 3 can be fixed to the optical fiber 81 while being separated from the optical cord fixing member 5 by a predetermined relative distance L.
- the step of measuring the relative distance between the ferrule 3 and the optical cord fixing member 5 can be reduced, and the assembling process can be economical.
- the same effect can be obtained even if the order of Step 3 and Step 4 is reversed.
- the positional relationship between the ferrule 3 and the optical cord fixing member 5 is as follows. It is specified in the step 4 ′ in which the optical cord fixing member 5 is assembled. The manufacturing method in the case where the order of Step 3 and Step 4 is changed with reference to FIGS. 16 and 17 will be described.
- the optical cord 80 is passed through the rear housing 2 and the coil spring 4 from the end 841 of the cord.
- the fiber cord fixing member 5 pass through the fiber cord fixing member 5, and further, as shown in FIG. 5 and the tensile member 82 are exposed. Further, the optical fiber coating 83 is peeled off to expose the optical fiber 81 at the tip. Further, the tensile member 82 is cut at a predetermined length. The cutting of the tensile members 82 may be performed before step 5 described later, and may be performed in step 3 ′ or step 4 ′.
- the ferrule 3 is fixed to the tip of the optical fiber 81. Then, the end of the ferrule 3 is subjected to a predetermined terminal treatment such as polishing of a predetermined end surface in accordance with desired characteristics.
- Step 4 ′ Fixing of the cord sheath 84 and the tensile member 82 to the optical cord fixing member 5 Further, as shown in FIG. 17, the ferrule 3 and the optical cord fixing member 5 fixed in Step 3 ′ are connected to each other. The tensile member 82 and the cord sheath 84 are fixed by the optical cord fixing member 5 so that the relative distance is a predetermined distance L set in advance.
- the flange portion 32 of the ferrule 3 is urged forward by the coil spring 4 into the through space 6 formed therein, and the ferrule 3 and the coil panel 4 are urged forward.
- the coil spring 4 is urged forward by the coil panel holding portion 22 1 of the rear housing 2 and the optical code fixing member 22 of the optical housing 2 22 of the rear housing 2.
- Ferrule 3 and optical cord fixing member corresponding to the state where 5 is held
- the tensile member 82 and the cord sheath 84 are fixed by the optical cord fixing member 5 so as to be separated from the ferrule 3 by the relative distance L of 5.
- the front housing 1 ′ is inserted into the code pre-assembly part 7 shown in FIG. 14 from the front in the optical axis direction as shown in FIG. Move coil spring 4 and rear housing 2 ⁇ from behind. Then, with the code pre-assembly component 7 incorporated therein, the locking portions 15 of the front housing 1 ′ and the locking portions 21 of the rear housing 2 ⁇ ⁇ are engaged with each other to lock the housings together.
- the optical connector plug 9 is completed.
- the terminal treatment such as polishing of the end surface of the ferrule may be performed somewhere in the process for configuring the code pre-assembly part 7.
- the ferrule 3 and the optical code fixing member 5 are fixed. It may be performed after the above, or may be performed at an arbitrary stage before the step 5.
- the assembly is performed as described above.
- the optical connector plug cannot achieve good characteristics.
- This assembly tool is an assembly tool used when assembling an optical connector plug, A means for holding the ferrule 3 to which the optical fiber core 85 has been fixed in advance; a means for holding the optical cord fixing member 5 which is located at the rear end of the ferrule 3 and has been passed through the optical cord 80; When the cord outer sheath 84 or the tensile member 82 is fixed to the optical cord fixing member 5, the ferrule 3 to which the optical fiber core 85 is fixed and the optical cord fixing member 5 have the above-described predetermined positional relationship. And arranging means for arranging them in
- the arrangement means is a state in which the flange portion 32 of the ferrule 3 is urged forward by the coil spring 4 in the through space portion 6 formed inside the front housing 1 and the rear housing 2 in a state where they are connected to each other.
- the tensile strength member 82 is connected to the ferrule 3 by a relative distance L between the ferrule 3 and the optical cord fixing member 5 corresponding to the state in which the optical cord fixing member 5 is held.
- the outer skin 84 is fixed by the optical cord fixing member 5.
- Fig. 22 shows an example of such an assembly tool.
- This assembling tool enables the optical cord fixing member 5 to be easily fixed at a position of a relative distance L with respect to the ferrule 3 previously fixed to the optical fiber 81.
- This assembly tool includes a ferrule holding jig 230 holding the ferrule 3 fixed to the optical fiber 81, an optical cord holding base 240 holding the optical cord 80, and a guide rail 250.
- a slide member 270 which is movable on the jig base 260 through the boss and has a concave portion 271 for holding the optical fiber core 85.
- the sliding member 270 functions as a member for holding and positioning the optical code fixing member 5.
- the ferrule holding jig 2 30 has a recess 2 3 1 corresponding to the shape of the ferrule 3. The movement of Ferrule 3 in the front-rear direction is restricted.
- an extending portion 272 extending in the optical axis direction of the optical code 80 is formed on the slide member 270, and the tip of the extending portion 272 is connected to the optical code holder 2 4.
- the slide member 270 is moved to a state in which the optical cord fixing member 5 is in contact with the slide member 270 and the ferrule held by the ferrule holding jig 230, the optical cord fixing member 5 is in contact with the slide member 270.
- the dimensions of each member, the relative spacing, and the like are set such that the distance from the coil 3 is the predetermined distance L.
- the ferrule 3 to which the optical fiber 81 is fixed is set in a ferrule holding jig 230.
- the slide member 270 is moved to a position where the extending portion 272 is brought into contact with the optical code holder 240, and in this state, the slide member 270 is moved. Press the optical cord fixing member 5 against the 0 wall. Then, in this state, the optical cord fixing member 5 is caulked and fixed to the optical cord 80.
- the optical cord fixing member 5 can be fixed to the optical cord 80 while being separated from the ferrule 3 by a predetermined relative distance L.
- the front housing 1 is moved toward the code pre-assembly part 7 from the front in the optical axis direction, and the coil panel 4 and the rear housing 2 are moved from the rear in the optical axis direction.
- the coil spring 4 of the rear housing 2 is used when assembling by locking the housings with each other by the locking portion 15 of the front housing 1 and the locking portion 21 of the rear housing 2 while incorporating the code pre-assembly part 7.
- the ferrule 3 collides with the flange 32 of the ferrule 3 of the cord pre-assembly part 7, the ferrule 3 may be pushed forward by the spring 4 and move forward. Further, the optical cord fixing member 5 may be pushed forward in the rear housing 2 and move.
- the optical cord fixing member 5 is attached to the optical cord fixing member holding portion 22 of the rear housing 2.
- the locking portion 24 of the optical cord fixing member holding portion 2 2 2 and the locking portion 5 1 1 of the optical cord fixing member 5 are plastically deformed and fixed while interfering with each other. In such a case, a relatively large force is applied to the optical cord fixing member 5 as the rear housing 2 is moved to the optical cord fixing member 5 side.
- the relative position between the ferrule 4 and the optical cord fixing member 5 may not be maintained.
- the optical cord fixing member 5 may not be arranged and locked at a predetermined position of the locking portion 24 of the optical cord fixing member holding portion 222.
- the rear end of the optical cord 80 is held so that the relative distance L between the ferrule 3 and the optical cord fixing member 5 does not change.
- the rotation of the optical cord 80 is prevented by locking the optical cord fixing member 5 to the engaging portion 24 of the optical cord fixing member holding portion 222. Therefore, it is necessary to securely hold the optical cord fixing member 5 at the inner rear end of the rear housing 2. For this reason, when engaging the front housing 1 and the rear housing 2, it is necessary to hold down the optical cord 80 with a predetermined resistance.
- This tool moves the front housing 1 from the front in the optical axis direction and the coil spring 4 and the rear housing 2 from the rear in the optical axis direction with respect to the code pre-assembly part 7.
- the ferrule 3 is incorporated into the front housing 1 and the flange portion 3 of the ferrule 3 is assembled.
- Figures 23A to 23D show an example of such an assembly tool.
- This assembly tool includes a front housing holding member 300 for holding and fixing the front housing 1, a ferrule holding member 310 for holding the ferrule 3, a rear housing holding member 320 for holding the rear housing 2, and an optical And a frictional resistance member 330 for applying a predetermined frictional resistance to the code 80.
- the rear housing holding member 320 can move along the guide rail 3221.
- the rear housing holding member 320 may be moved manually using a lever 1322, or may be moved using an appropriate drive mechanism using a motor or the like. .
- the code pre-assembly part 7 (Ferrule 3 and optical cord fixing member 5) is fixed to the tip, and the integrated rear housing 2, coil spring 4 and boot 25 are inserted. Assemble the optical cord 80.
- the ferrule 3 of the optical cord 80 incorporating such components is installed on the ferrule holding member 310, and the rear housing 2 (in this case, the boot 25) is mounted on the rear housing holding member 320.
- the optical code 80 behind the rear housing 2 is set on the frictional resistance member 330.
- the front housing 1 is set on the front housing holding member 300.
- the rear housing holding member 320 is moved forward to engage the rear housing 2 and the front housing 1.
- a constant frictional resistance is applied to the optical cord 80 by the frictional resistance member 330. Is securely set in the required positions of the front housing 1 and the rear housing 2.
- the ferrule 3 is held by the ferrule holding member 310, but the optical cord fixing member 5 may be held, or the ferrule 3 and the optical cord fixing member 5 may be held. You may hold
- the relative positions of the front housing 1, the ferrule 3 and the rear end of the cord do not change even if the rear housing 2 is moved forward so as to be connected to the front housing 1. Held in position.
- the optical cord fixing member 5 to which the optical cord 80 is fixed does not move similarly because the rear end side of the cord is held, so that the relative position between the front housing and the ferrule is maintained.
- the front housing 1 and the rear housing 2 can be fixed while keeping the ferrule 3 and the optical cord fixing member 5 at a predetermined relative position.
- the optical cord fixing member 5 is fixed to the rear housing 2 at a predetermined position of the fixing member holding portion 222 inside the rear housing 2. It can be accurately positioned and locked and held.
- the front housing 1 is moved to the code pre-assembly part 7 from the front in the optical axis direction, and the coil spring 4 and the rear housing 2 are moved from the rear in the optical axis direction. Therefore, when assembling with the locking parts 15 of the front housing 1 and the locking parts 21 of the rear housing 2 while assembling the code pre-assembly parts 7, the code pre-assembly parts are used. It is necessary that the flange portion 32 of the ferrule 3 is disposed at a predetermined position of the flange holding portion 13 of the front housing 1, and after the ferrule 3 is disposed, the relative position between the ferrule 3 and the front housing 1 must be maintained.
- the front housing 1 was moved from the front with respect to the code pre-assembly part 7, and after the ferrule 3 of the code pre-assembly product 7 was assembled into the front housing 1, the ferrule 3 and the optical cord were fixed.
- the ferrule 3 must be held in the front housing 1 so that the relative distance L to the member 5 does not change. This allows the rear housing 1 and the front housing 2 to be completely connected without changing the relative position between the ferrule 3 and the optical cord fixing member 5 when the rear housing 2 is assembled from behind.
- an assembly tool for arranging and holding the ferrule 3 at a predetermined position of the front housing is used.
- This tool moves the front housing 1 from the front in the optical axis direction, and the coil spring 4 and the rear housing 2 from the rear in the optical axis direction.
- the ferrule 3 of the code pre-assembly part 7 When mounting the ferrule 3 to the front housing 1, the means for holding the ferrule 3, the means for holding the front housing 1, and the predetermined position of the front housing 1, that is, the flange 3 2 make sure that the relative positioning between the ferrule 3 and the front housing 1 does not change after the arrangement. And a means for maintaining the state.
- FIGS. 24A to 24D show an example of such an assembling tool.
- the rear housing holding member 320 is moved forward to couple the rear housing 2 to the front housing 1, but in the assembly tool shown in FIG. Then, the front housing 1 is moved rearward to couple the front housing 1 to the rear housing 2.
- this assembling tool includes a front housing holding member 400 for holding and fixing the front housing 1, a ferrule holding member 410 for holding the ferrule 3, and a rear holding member for holding the rear housing 2.
- the housing includes a housing holding member 420 and a cord pulling member 430 that applies a predetermined rearward tension to the optical cord 80 and moves the optical cord 80 rearward.
- the front housing holding member 400 can move in the reciprocating direction along the guide rail 401. In this case, the front housing holding member 400 is manually moved using the lever 402.
- the rear housing holding member 420 regulates rearward movement of the rear housing 2.
- the cord pulling member 430 includes a pair of pulleys and a mechanism for rotating the pulleys.
- the code pre-assembly part 7 (Ferrule 3 and optical cord fixing member 5) is fixed to the tip, and the integrated rear housing 2, coil spring 4 and boot 25 are inserted. Assemble the optical cord 80.
- the ferrule 3 of the optical cord 80 incorporating such components is installed on the ferrule holding member 4 10, and the rear housing 2 (in this case, boots 25) is attached to the rear housing holding member 4.
- the optical cord 80 behind the rear housing 2 is set in the tension applying member 4300.
- the front housing 1 is set on the front housing holding member 400.
- the front housing holding member 400 is moved rearward, and the optical cord 80 is pulled rearward by the cord tension member 4300 and moved.
- the rear housing 2 and the front housing 1 are engaged.
- the front housing holding member 400 is moved backward, the optical cord 80, the ferrule 3 connected to the optical cord 80, and the optical cord fixing member 5
- the cord pre-assembly part 7 is securely set at a required position on the front housing 1 and the rear housing 2 when the cord pre-assembly part 7 is moved rearward under tension.
- the ferrule 3 is held by the ferrule holding member 4 10, but the optical cord fixing member 5 may be held, or the ferrule 3 and the optical cord may be held. Both of the fixing members 5 may be held.
- FIG. 25 shows a plurality of the assembly tools shown in FIG. According to such an assembling tool, it is possible to assemble a plurality of connectors at the same time, thereby realizing a great economical optical connector assembly process.
- FIGS. 21, 22, and 24 may be provided side by side.
- the process of terminally processing the optical cord, the step of fixing the optical cord, and the step of fixing the optical fiber to the ferrule are performed.
- the order may be changed, it can be integrated into a series of processes, so it is easy to automate the assembly of optical connector plugs, which was relatively difficult so far, and to improve the efficiency of optical connector plug assembly .
- the assembly can be realized by a relatively simple automatic assembling machine, and automation can be achieved. There are advantages that can be easily achieved.
- the connector housing itself is often made of metal because the portion of the connector housing where the tensile member / cord outer sheath is fixed must withstand the force of caulking.
- the fixing of the cord outer cover and the tensile strength member is realized by the optical cord fixing member as an individual member independent of the housing main body (the front housing and the rear housing).
- the optical cord fixing member 5 since the optical cord fixing member 5 has an extremely simple structure, it can be realized at low cost. Further, since the optical cord fixing member 5 can be inserted through the inside of the coil panel 4, after fixing the optical cord 80 to the optical cord fixing member 5, the coil spring 4 is moved back and forth in the optical axis direction of the optical cord fixing member 5. Thus, the optical cord 80 can be fixed before the coil spring 4 is arranged at a predetermined position.
- plug structures for automation or simplified assembly there are a structure in which a coil spring is incorporated in a ferrule and a structure in which these are incorporated in a housing.
- an adhesive is usually used.However, in the optical connector which has been simplified as described above, the state in which the coil spring is incorporated in the ferrule or the state in which these are incorporated in the housing is employed. Optical cord ⁇ Tightening member may be fixed to the housing with adhesive. Therefore, in the case of such a simplified plug, it is necessary to pay close attention so that the adhesive does not stick to parts other than the ferrule or to a predetermined member for fixing the tensile strength member. For this reason, in many cases, this is achieved by using a microphone opening dispenser for applying an adhesive, a special adhesive injection member, or the like. This is because if the adhesive is attached to parts other than the ferrule, various malfunctions may occur.
- the connector plug has a structure in which the ferrule can be fixed away from other components or in a state where no other components are present, so that the ferrule can be easily bonded.
- the force caulking seat may be a cylindrical part such as metal
- the caulking ring may be a substantially cylindrical metal part.
- the strength member and the outer cover of the cord can be firmly fixed, and a highly reliable optical connector can be provided.
- the tensile strength member is attached to the tensile strength member fixing portion on the outer surface of the caulking seat, the caulking ring is applied thereto, and then the caulking is carried out. It can be done with a very simple task of fixing the cord skin.
- a guide taper wall is provided on the inner wall surface of the rear housing to guide the optical cord fixing member at a predetermined rotation angle position where the rotation of the optical cord fixing member is to be prevented. Only by operating the cord fixing member and the rear housing relatively forward of the optical axis, the optical cord fixing member can be guided to a predetermined rotation angle position for preventing rotation. Since this operation is completed only by relatively moving the optical cord fixing member and the rear housing in the optical axis direction, there is an advantage that workability is good and automation is easy.
- one or more convex portions are provided on the inner surface of the optical cord fixing member holding portion of the rear housing, and the optical cord fixing member when the optical cord fixing member is accommodated in the optical cord fixing member holding portion.
- the optical cord fixing member is plastically deformed by the pressing force from the outer surface of the optical cord. Since the optical cord fixing member is fixed to the rear housing, the optical cord fixing member can be arranged and held at a predetermined position in the rear housing only by relatively moving the optical cord fixing member and the rear housing in the optical axis direction.
- the inner surface shape of the coil panel holding portion of the rear housing has a shape substantially equal to the outer shape of the coil panel, and at least a part thereof has a convex portion which is plastically deformed by contact with the coil panel, so that the rear housing is previously provided.
- the boot is made of a material that is relatively easy to bend to provide strength against bending, so that even if the cord of the optical connector plug is bent, the optical fiber will not bend extremely, causing loss or breakage. It is common to do.
- the rear housing is constituted integrally with the rear housing main body and the boot connected to the rear portion of the rear housing main body, and the rear housing main body and the boot are preliminarily integrated so as to be integrally treated with the rear housing. Although it has a structure that does not cause deterioration of characteristics due to bending, there is an advantage that labor for assembling boots can be omitted and automation can be facilitated.
- the front housing includes at least a front housing body and a cover for covering the front housing body.However, by assembling the front housing body and the cover in advance so as to be slidable, assembly is possible. Advantages of reduced number of parts, simplified assembly, and easy automation There is.
- the present invention is also applicable to an SC type optical connector.
- the optical connector plug for a single-core optical fiber is shown, but the present invention is of course applicable to a multi-core optical fiber.
- the cross section of the ferrule does not necessarily have to be circular, and any shape such as polygonal, elliptical, or rectangular may be employed.
- Other appropriate cross-sectional shapes of the front housing 1, the rear housing 2, the coil spring 4, the optical cord fixing member 5, etc. may be adopted without departing from the gist of the present invention.
- the optical fiber positioning and fixing section 31 fixes the optical fiber with an adhesive, but the optical fiber may be fixed by using any other known method.
- the optical connector plug for connecting the optical cord having the tensile member, the cord outer cover, the optical fiber coating, and the optical fiber is shown.
- the optical connector plug of the present invention includes the tensile strength member and the outer cover. It can also be applied when terminating an optical code that does not have it.
- the optical connector plug according to the present invention includes an optical fiber, an optical fiber core having an optical fiber coating for coating the optical fiber, a cord sheath for further coating the optical fiber core, and the optical fiber. It is useful for terminating an optical cord having a tensile member interposed between a fiber core and a cord sheath, and is easy to assemble and suitable for automatic assembling.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU51042/00A AU5104200A (en) | 1999-06-01 | 2000-06-01 | Optical plug connector, method of manufacture and assembly tool |
EP00935525.6A EP1199584B1 (en) | 1999-06-01 | 2000-06-01 | Optical plug connector, method of manufacture and assembly tool |
US09/997,128 US6913394B2 (en) | 1999-06-01 | 2001-11-29 | Optical connector plug, manufacturing method thereof and assembling tool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11/153922 | 1999-06-01 | ||
JP15392299 | 1999-06-01 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/997,128 Continuation US6913394B2 (en) | 1999-06-01 | 2001-11-29 | Optical connector plug, manufacturing method thereof and assembling tool |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000073830A1 true WO2000073830A1 (en) | 2000-12-07 |
Family
ID=15573032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/003561 WO2000073830A1 (en) | 1999-06-01 | 2000-06-01 | Optical plug connector, method of manufacture and assembly tool |
Country Status (5)
Country | Link |
---|---|
US (1) | US6913394B2 (ja) |
EP (1) | EP1199584B1 (ja) |
KR (1) | KR100713430B1 (ja) |
AU (1) | AU5104200A (ja) |
WO (1) | WO2000073830A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101866037A (zh) * | 2010-06-17 | 2010-10-20 | 深圳日海通讯技术股份有限公司 | 一种光纤连接器及装配方法 |
CN103124916A (zh) * | 2010-10-01 | 2013-05-29 | 胡贝尔和茹纳股份公司 | 插入式连接器 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
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US6883976B2 (en) * | 2001-07-30 | 2005-04-26 | Seikoh Giken Co., Ltd. | Optical fiber ferrule assembly and optical module and optical connector using the same |
JP4942327B2 (ja) * | 2005-10-28 | 2012-05-30 | スリーエム イノベイティブ プロパティズ カンパニー | 光コネクタ |
DE102006062695B4 (de) * | 2006-05-16 | 2008-05-08 | Roland Berger | Steckverbinder für einen Lichtwellenleiter |
US7775726B2 (en) * | 2007-02-16 | 2010-08-17 | 3M Innovative Properties Company | Remote grip optical fiber connector |
US7534050B2 (en) * | 2007-04-13 | 2009-05-19 | Adc Telecommunications, Inc. | Field terminatable fiber optic connector assembly |
JP2009210669A (ja) * | 2008-03-03 | 2009-09-17 | Furukawa Electric Co Ltd:The | コネクタユニット |
JP5574469B2 (ja) | 2009-05-25 | 2014-08-20 | 日本航空電子工業株式会社 | 光コネクタおよび光コネクタシステム |
JP5144623B2 (ja) * | 2009-10-28 | 2013-02-13 | Seiオプティフロンティア株式会社 | 光コネクタの組立方法 |
JP5182893B2 (ja) * | 2009-11-17 | 2013-04-17 | Nttエレクトロニクス株式会社 | 光コネクタプラグ |
JP6138533B2 (ja) * | 2013-03-18 | 2017-05-31 | 株式会社 オプトクエスト | マルチコアファイバ用光接続器 |
JP6496611B2 (ja) * | 2015-06-05 | 2019-04-03 | 三和電気工業株式会社 | 光コネクタフェルール用ブーツ |
JP6649065B2 (ja) | 2015-12-04 | 2020-02-19 | 三和電気工業株式会社 | 光コネクタフェルール用ブーツ |
JP6419138B2 (ja) * | 2016-12-05 | 2018-11-07 | 株式会社フジクラ | コネクタ付光ファイバコード |
JP7063456B2 (ja) * | 2017-06-09 | 2022-05-09 | 株式会社精工技研 | 光コネクタ |
DE102020111054A1 (de) * | 2020-04-23 | 2021-10-28 | Harting Electric Gmbh & Co. Kg | Feldkonfektionierbare Ferrule und dazugehöriges Ferrulengehäuse |
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US5381500A (en) * | 1993-10-12 | 1995-01-10 | The Whitaker Corporation | Metal insert and buffer retention plunger |
US5394497A (en) * | 1994-02-22 | 1995-02-28 | The Whitaker Corporation | Captivated fiber optic connector |
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- 2000-06-01 AU AU51042/00A patent/AU5104200A/en not_active Abandoned
- 2000-06-01 KR KR1020017015446A patent/KR100713430B1/ko not_active IP Right Cessation
- 2000-06-01 WO PCT/JP2000/003561 patent/WO2000073830A1/ja active Application Filing
- 2000-06-01 EP EP00935525.6A patent/EP1199584B1/en not_active Expired - Lifetime
-
2001
- 2001-11-29 US US09/997,128 patent/US6913394B2/en not_active Expired - Fee Related
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JPS63256909A (ja) * | 1987-04-14 | 1988-10-24 | Sumitomo Electric Ind Ltd | 光コネクタ |
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EP0819960A2 (en) * | 1996-07-15 | 1998-01-21 | Seiko Instruments Inc. | Universal optical fiber connectors and basic plugs thereof |
EP0862072A2 (en) * | 1997-02-27 | 1998-09-02 | Seiko Instruments Inc. | Clamp rings and optical fibre terminating structures |
JPH10319273A (ja) * | 1997-05-21 | 1998-12-04 | Nippon Steel Weld Prod & Eng Co Ltd | 光ファイバコネクタ |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101866037A (zh) * | 2010-06-17 | 2010-10-20 | 深圳日海通讯技术股份有限公司 | 一种光纤连接器及装配方法 |
CN101866037B (zh) * | 2010-06-17 | 2011-12-21 | 深圳日海通讯技术股份有限公司 | 一种光纤连接器及装配方法 |
CN103124916A (zh) * | 2010-10-01 | 2013-05-29 | 胡贝尔和茹纳股份公司 | 插入式连接器 |
CN103124916B (zh) * | 2010-10-01 | 2015-06-17 | 胡贝尔和茹纳股份公司 | 插入式连接器 |
Also Published As
Publication number | Publication date |
---|---|
AU5104200A (en) | 2000-12-18 |
US6913394B2 (en) | 2005-07-05 |
US20020090179A1 (en) | 2002-07-11 |
KR100713430B1 (ko) | 2007-05-04 |
EP1199584B1 (en) | 2014-09-17 |
EP1199584A1 (en) | 2002-04-24 |
KR20020021112A (ko) | 2002-03-18 |
EP1199584A4 (en) | 2004-05-19 |
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