WO2018199331A1 - Capuchon protecteur - Google Patents

Capuchon protecteur Download PDF

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Publication number
WO2018199331A1
WO2018199331A1 PCT/JP2018/017322 JP2018017322W WO2018199331A1 WO 2018199331 A1 WO2018199331 A1 WO 2018199331A1 JP 2018017322 W JP2018017322 W JP 2018017322W WO 2018199331 A1 WO2018199331 A1 WO 2018199331A1
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WO
WIPO (PCT)
Prior art keywords
connection terminal
optical connection
adhesive
protective cap
cylindrical
Prior art date
Application number
PCT/JP2018/017322
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English (en)
Japanese (ja)
Inventor
後藤　誠
鈴木　正義
Original Assignee
株式会社巴川製紙所
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Filing date
Publication date
Application filed by 株式会社巴川製紙所 filed Critical 株式会社巴川製紙所
Publication of WO2018199331A1 publication Critical patent/WO2018199331A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means

Definitions

  • the present invention relates to a novel protective cap for protecting the connection surface of an optical fiber optical connection terminal.
  • a protective cap is used to prevent contamination of the front end surface of the optical connection terminal.
  • an object of the present invention is to provide means for preventing contamination of an optical connection terminal even if dust is present on a wall surface of a protective cap.
  • the present invention (1) is a protective cap capable of protecting an optical connection terminal assembled to an optical fiber terminal unit, A cap portion including a cylindrical portion in which one end portion can be fitted with the optical connection terminal and a bottom portion provided at the other end portion of the cylindrical portion; Provided inside the cap portion, and when the optical connection terminal is inserted into the cap portion through the tubular portion, the tip of the inserted optical connection terminal can be contacted An adhesive portion arranged in a position; A protective cap having The present invention (2) is a protective cap capable of protecting the optical connection terminal assembled to the optical fiber terminal unit, A cylindrical portion into which the optical connection terminal can be inserted; and The cylindrical part is provided on the surface, and when the optical connection terminal is inserted into the cylindrical part, there is a through-hole through which the optical connection terminal can pass through the cylindrical part to the inside.
  • the case part is separable into a lid part on which the cylindrical part is provided on a surface and a bottom part on which the adhesive part is provided. It is a protective cap of the said invention (2).
  • the present invention (4) is the protective cap according to the invention (2) or (3) for insertion of a plurality of optical connection terminals and / or optical connection terminals having different shapes.
  • the present invention (5) is the protective cap according to any one of the inventions (1) to (4), wherein the cylindrical portion is made of a flexible molding resin.
  • the present invention (6) is the protective cap of the invention (5), wherein the flexible molding resin is polyethylene and / or polypropylene.
  • the said protective cap is, Used for an optical connection terminal having a first locking portion; Including the tubular portion having a second locking portion; When the optical connection terminal is inserted into the tubular portion, At the position where the tip of the optical connection terminal and the adhesive part abut, A second locking portion of the tubular portion; A first locking portion of the optical connection terminal;
  • the protective cap according to any one of the inventions (1) to (4), wherein the caps are mutually locked.
  • the present invention (8) is the protective cap according to any one of the inventions (1) to (7), wherein the adhesive portion includes a resin foam having an open cell structure.
  • This invention (9) is the protective cap of the said invention (8) in which the said adhesion part contains a base material further.
  • the protective cap is When the light is emitted from the optical fiber attached to the optical connection terminal with the cap part or the case part being brought into contact with the tip of the optical connection terminal and the adhesive part.
  • the present invention (11) is the protective cap according to the invention (10), wherein the material of the adhesive portion is transparent and the refractive index is 1.43 to 1.55.
  • This invention (12) is the protective cap of the said invention (10) or (11) whose material of the said adhesion part is an acrylic adhesive.
  • an adhesive portion that contacts the end of the optical connection terminal is provided in the protective cap. Even if dust is present on the end face of the optical connection terminal, the adhesive part can remove the dust (cleaner function), and (3) the dust is present on the wall surface of the protective cap, and the dust is light. Even if it adheres to the tip of the connection terminal, the adhesive portion can remove the dust (recontamination prevention function).
  • the lid has a flexible retaining material (for example, PE, PP, etc.), the bottom Can use materials that are compatible with the adhesive of the adhesive part (for example, PC, ABS, PC + ABS, etc.), (2) If the adhesive effect is lost, replace only the bottom with a new member and function The effect that can be reproduced.
  • the present invention in addition to the above-described effect, there is an effect that a plurality of optical connection terminals can be simultaneously handled.
  • the present invention (5) by using a specific material in the cylindrical portion and the adhesive portion, it becomes easy to press-fit and hold the optical connection terminal in the cylindrical portion, and an excellent cleaning function, termination function, etc. can be exhibited. There is an effect.
  • the present invention (6) By using a specific material in the cylindrical part and the adhesive part, it is possible to easily press-fit and hold the optical connection terminal in the cylindrical part, and to exhibit an excellent cleaning function and termination function.
  • this invention (7) in addition to the said effect, there exists an effect that an optical connection terminal and a protective cap can be fixed reliably, and it can prevent that an optical connection terminal remove
  • an excellent cleaning function can be provided by using a resin foam for the adhesive portion, and for example, even if a pin at the tip of an optical connection terminal with a pin is pierced, a pin or the like There is an effect that there is no contamination.
  • the resin foam by using a resin foam and a base material for the adhesive part, the resin foam can provide flexibility, and an excellent cleaning function can be imparted. There is an effect.
  • the present invention (10) in addition to the above effects, (1) it is possible to provide an optical termination function to the optical connection terminal. (2) When the connector processing is applied to the tip of the optical fiber, There is an effect that the return loss can be measured for the purpose of confirming the processing state.
  • FIG. 1 is a perspective view of an optical connection terminal assembled at the tip of an optical fiber and a side sectional view of the tip.
  • FIG. 2 is a perspective view of an example 1 of the protective cap according to the present embodiment.
  • FIG. 3 is a side sectional view showing the structure of the first aspect of the protective cap according to the present embodiment.
  • FIG. 4 is an operation diagram of the first aspect of the protective cap according to the present embodiment.
  • FIG. 5 is a perspective view of aspect example 2 of the protective cap according to the present embodiment.
  • FIG. 6 is a perspective view illustrating another aspect of aspect example 2 of the protective cap according to the present embodiment.
  • FIG. 7 is a development view of a second example of the protective cap according to the present embodiment.
  • FIG. 8 is an operation diagram of the aspect example 2 of the protective cap according to the present embodiment.
  • FIG. 9 is a perspective view of the optical connection terminal assembled at the tip of the optical fiber according to the third example of the protective cap according to the present embodiment.
  • FIG. 10 is a perspective view of an example 3 of the protective cap according to the present embodiment.
  • FIG. 11 is a perspective view of another aspect of aspect example 3 of the protective cap according to the present embodiment.
  • FIG. 12 is an operation diagram of the aspect example 3 of the protective cap according to the present embodiment.
  • FIG. 13 is a side cross-sectional view showing the structure of a third aspect of the protective cap according to the present embodiment.
  • the protective cap according to the present invention (for example, FIGS. 2 and 5) This is a protective cap that can protect the tip 110 of the optical connection terminal 100 (FIG. 1) assembled to the optical fiber terminal.
  • Example 1 of protective cap The example 1 of the aspect which concerns on this invention is demonstrated according to FIG.
  • a cap portion 210 including a cylindrical portion 211 into which the optical connection terminal 100 can be inserted, and a bottom portion 220 provided at the other end of the cylindrical portion; and provided inside the cap portion 210;
  • the adhesive 111 is disposed at a position where the tip 111 of the optical connection terminal can be contacted.
  • a protective cap 200 having a portion 230.
  • the protective cap 200 has optical termination properties when light is emitted from an optical fiber attached to the optical connection terminal 100 with the tip 111 of the optical connection terminal 100 and the adhesive portion 230 in contact with each other. You may have the light absorption part which exhibits.
  • the shape of the protective cap 200 is not particularly limited, and can be manufactured according to the shape of the optical connection terminal.
  • the cap part 210 includes a cylindrical part 211 and a bottom part 220 which will be described in detail later, and further includes an adhesive part 230 which will be described later, and optionally a light absorption part which will be described in detail later. Can do.
  • the cap part 210 can be separated into the cylindrical part 211 and the bottom part 220 provided with the adhesive part 230, and can be fixed during use.
  • FIG. 2 shows an example in which the cylindrical portion and the bottom portion can be assembled by fitting each other.
  • the cylindrical portion and the bottom portion can be fixed using a simple fitting fixing method, a fixing method using a nail, a fixing method using a screw, a fixing method using insertion, a fixing method using adhesion, or the like. it can.
  • a simple fitting fixing method a fixing method using a nail, a fixing method using a screw, a fixing method using insertion, a fixing method using adhesion, or the like. it can.
  • the material of the cylindrical portion 211 is made of a material excellent in insertion property with the optical fiber tip portion
  • the material of the bottom portion 220 is made of a material excellent in adhesion (adhesion) with the adhesive portion 230. It becomes easy.
  • the material of the cap part 210 is not particularly limited, and examples thereof include resin, metal, ceramics, and glass.
  • the cylindrical portion 211 and the bottom portion 220 may be made of the same material or different materials. The thing suitable for the characteristic of each site
  • the cylindrical part 211 in the present invention is a main part constituting the cap part 210.
  • the size and shape of the cylindrical portion are not particularly limited, and for example, it is preferable to match the size and shape of the optical connection terminal 100 assembled to the optical fiber terminal portion or the tip portion thereof. (For example, a cylindrical shape or a rectangular tube shape).
  • size and shape of the said cylindrical part when the said optical connection terminal is inserted, the magnitude
  • the distal end surface 111 of the optical connection terminal abuts on the surface of the adhesive portion 230 provided in the cap, or the light
  • the front end surface 111 of the connection terminal can be designed to push the surface of the adhesive part 230.
  • the cylindrical portion 211 can be designed to have a structure that can be locked by using a claw portion provided in the optical connection terminal 100 when the optical connection terminal 100 is inserted.
  • the material of the cylindrical portion 211 is not particularly limited, and examples thereof include metals, ceramics, resins, and glass.
  • the material of the cylindrical portion 211 is preferably a resin, more preferably a flexible molded resin, considering that the optical connection terminal 100 is repeatedly inserted and the optical connection terminal 100 is not damaged, and the adhesive portion 230 is more preferable.
  • More preferred are polyethylene resins and polypropylene resins having low adhesiveness. Since the polyethylene resin and the polypropylene resin have a relatively high surface energy, the adhesive force of the adhesive is not high. Therefore, when exchanging the adhesive part 230, it can be easily peeled off from the cylindrical part 211, and a part of the adhesive part 230 is difficult to adhere to the cylindrical part 211.
  • the tip surface 111 of the optical connection terminal 100 into which the deposit is inserted may be contaminated. Moreover, when the optical connection terminal is inserted into the polyethylene resin or polypropylene resin, the optical connection terminal has high retention (the optical connection terminal is difficult to come off).
  • the flexible molding resin in the present invention includes a thermoplastic resin, a thermosetting resin, a rubber and the like having an elastic modulus of 1 to 1000 MPa.
  • Adhesive part The adhesive part 230 in the present invention is in contact with the inserted distal end surface 111 of the optical connection terminal, or after the distal end surface 111 of the optical connection terminal pushes the surface of the adhesive part 230, the optical connection By removing the terminal, contaminants such as dust adhering to the optical connection terminal tip surface 111 can be removed.
  • the adhesive portion 230 has an adhesive force sufficient to remove dust and the like attached to the optical connection terminal distal end surface 111, and the optical connection terminal distal end surface 111 or the optical connection terminal that has been contacted or pressed. It can be adjusted to have an internal cohesive force that prevents the adhesive from adhering to the tip 110.
  • the adhesive part 230 can be a substantially transparent adhesive, and can have a refractive index that is the same as or slightly larger than the refractive index of the optical fiber, as will be described later.
  • substantially transparent means not only a completely transparent state but also a state that can transmit most of the incident light, for example, a state where the light transmittance is 80% or more.
  • the optical connection terminal is attached to the optical connection terminal by bringing the front end surface 111 of the optical connection terminal into contact with the adhesive portion 230 or pressing the front end 110 of the optical connection terminal into the adhesive portion 230. Light emitted from the optical fiber is not reflected at the interface between the tip of the optical fiber and the adhesive, but can be transmitted and diffused into the adhesive part.
  • the diffused light can be absorbed by the bottom part 220 of the cap part 210 which is a light absorbing part.
  • the adhesive section 230 can have a so-called optical termination function in which light emitted from the optical fiber is not reflected by the optical fiber by being combined with a light absorbing section described later. Thereby, in the return loss measurement performed after wiring processing, a high return loss, that is, a non-reflection state or a substantially non-reflection state can be obtained at the end.
  • the adhesive portion 230 is provided in the cap portion 210, and the thickness thereof is not particularly limited, but is 0.05 mm or more, preferably 1 mm or more, more preferably 3 mm or more. If the thickness of the adhesion part 230 is 3 mm or more, even if it is a case where the MPO connector which has a pin is contact
  • the material of the adhesive part 230 is not particularly limited, and examples thereof include an adhesive, a resin foam, and a gel material. Among these, a pressure-sensitive adhesive having high internal cohesive force and tackiness, and a resin foam having an open-cell structure are preferable. More preferred is a resin foam having
  • UV curable pressure-sensitive adhesive examples include those composed of an elastic polymer, an ultraviolet crosslinkable resin, a polymerization initiator, a polymerization inhibitor, and the like.
  • the elastic polymer examples include acrylic resin, saturated polyester resin, polyurethane resin, and silicone resin. Of these, acrylic resins are preferred. Acrylic resin is relatively easy to arrange physical properties in order to achieve both performances such as dust removal and adhesive residue resistance.
  • the acrylic resin examples include a copolymer of an acrylate monomer and another copolymerizable monomer.
  • the copolymer uses the acrylate monomer capable of forming a polymer having a low glass transition point as a main monomer in order to impart tackiness, and also provides internal cohesiveness.
  • a monomer capable of forming a polymer having a high glass transition point, and a monomer having a functional group such as a carboxylic acid group, an amide group, a glycidyl group, and a hydroxyl group in order to improve crosslinkability and adhesion. Can be obtained by using.
  • acrylate monomer examples include acrylate alkyl esters such as ethyl acrylate, butyl acrylate, and 2-ethylhexyl acrylate.
  • Examples of the monomer capable of forming a polymer having a high glass transition point include vinyl acetate, acrylonitrile, styrene, methyl acrylate, and methyl methacrylate.
  • Examples of the monomer having a functional group such as carboxylic acid group, amide group, glycidyl group, and hydroxyl group include acrylic acid, methacrylic acid, itaconic acid, hydroxylethyl methacrylate, hydroxylpropyl methacrylate, acrylamide, and glycidyl methacrylate. Can be mentioned.
  • Examples of the ultraviolet crosslinkable resin include oligomers that are cross-linked by irradiation with ultraviolet rays in a specific wavelength region, or acrylic acid esters or methacrylic acid esters as monomers, and these include at least 2 in the molecule. It is preferable to have one acryloyl group or methacryloyl group.
  • oligomer examples include oligoester acrylate, and examples of the monomer include 1,6-hexanediol acrylate, trimethylolpropane triacrylate, tetramethylolmethane tetraacrylate, dipentaerythritol hexaacrylate, and the like.
  • Ester of polyhydric alcohol and acrylic acid, or ester of polyhydric alcohol such as 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, tetramethylolmethane tetraacrylate, dipentaerythritol hexaacrylate and methacrylic acid Etc.
  • urethane acrylate, epoxy acrylate, and the like can be given.
  • the UV-curing pressure-sensitive adhesive for example, 0.5 to 50 parts by weight, preferably 0.5 to 10 parts by weight of the ultraviolet-crosslinkable resin is blended with 100 parts by weight of the elastic polymer. That's fine. If it is less than 0.5 part by weight, the adhesive strength of the UV curable adhesive may not substantially change before and after the ultraviolet irradiation, whereas if it exceeds 50 parts by weight, the UV curable adhesive will be cured after the ultraviolet irradiation. Too much, there is a risk that the adhesive strength is reduced.
  • the polymerization initiator is used for accelerating the crosslinking of the ultraviolet crosslinkable resin by ultraviolet irradiation, and a known polymerization initiator can be appropriately used.
  • these polymerization initiators include benzoin alkyl ethers such as benzoin methyl ether and benzoin propyl ether, aromatic oxyketones such as benzoin, benzyl and benzophenone, aromatic ketones, benzyldimethyl ketal and polyvinylbenzophenone. be able to.
  • the blending amount of the polymerization initiator is 0.1 to 20 parts by weight, preferably 0.5 to 10 parts by weight with respect to 100 parts by weight of the elastic polymer. If the amount is less than 0.1 parts by weight, the crosslinking of the UV-crosslinkable resin does not proceed even when irradiated with ultraviolet rays, so that adhesiveness is hardly expressed, and adhesive residue is likely to occur, which may cause problems. Even if it exceeds 20 parts by weight, the effect as a polymerization initiator does not change so much and is not economical.
  • a resin foam having an open cell structure can be obtained by foaming an acrylic resin, a saturated polyester resin, a polyurethane resin, a silicone resin, or the like.
  • a resin foam (micro sucker) disclosed in JP2012-56985A is suitable.
  • the structure of the resin foam is not particularly limited as long as pores having an open-cell structure are present on the surface of the resin foam.
  • the pore density on the surface of the resin foam is 10 / mm 2 to 300 / Mm 2 , preferably 30 pieces / mm 2 to 200 pieces / mm 2 , more preferably 50 pieces / mm 2 to 150 pieces / mm 2 .
  • the number of holes (hole density) on the surface of the resin foam is within such a range, when the tip of the optical connection terminal comes into contact with the resin foam, the followability of the resin foam to the tip is improved and dust The takeability is improved.
  • the resin foam surface has a pore density of 10 randomly selected surfaces of the resin foam surface using an optical microscope or a scanning electron microscope, and the number of holes per field area of the captured image. It can be measured and averaged.
  • the method for producing the resin foam is not particularly limited, and the resin foam can be produced by a known method.
  • the resin foam may be produced by either chemical foaming or physical foaming, and may be an open-cell foam in which closed cells are formed and then physically communicated by pulverizing the bubbles.
  • a foam production method disclosed in JP 2012-56985 A is suitable.
  • the soft polyurethane resin generally called a polyurethane gel
  • a polyurethane gel can be used.
  • the adhesive force of the gel material is weak, dust and the like can be removed from the front end surface of the optical connection terminal due to the embedding effect due to the softness of the soft polyurethane.
  • the gel material is slightly adhesive, the optical connection terminal can be easily detached, and no adhesive residue will be generated. Clean the surface of the soft polyurethane with dust on it with a dust-free cloth moistened with water. And can be reused.
  • a soft composition disclosed in JP-A-2001-316448 is suitable.
  • the pressure-sensitive adhesive preferably has a gel fraction of 60% or more, more preferably 85% or more.
  • the degree of cross-linking is related to the cohesive force of the pressure-sensitive adhesive at normal temperature or high temperature.
  • the gel fraction is less than 60%, the fluidity increases and the optical connection terminal tip surface 111 is glued. It can cause the rest.
  • the gel fraction is 60 or more, the balance between the anti-glue resistance and the tack property (dust removal performance) is excellent, and the distal end surface of the optical connection terminal or the distal end portion is attached to the adhesive portion 230 for a relatively long time. Even if it is abutted or pushed in, it is difficult to leave glue.
  • Gel fraction an organic solvent such as ethyl acetate is used as a solvent, and the adhesive is immersed in the solvent at a temperature of 30 ° C. and sufficiently swollen, and then the insoluble matter is reduced to a 200 mesh net. After filtering and drying the solvent, its weight can be measured and calculated by the following formula.
  • Gel fraction (%) (dry weight after filtration after solvent immersion / weight before solvent immersion) ⁇ 100
  • the refractive index of the adhesive part 230 can be the same as or slightly larger than the refractive index of the optical fiber in order to prevent reflection by the surface of the adhesive part 230. Specifically, it is preferably 1.40 to 1.65, more preferably 1.43 to 1.55. The refractive index can be measured according to JIS K7142.
  • the light absorbing part according to the present invention has the following effects when the adhesive part is made of a substantially transparent adhesive having the same refractive index as the optical fiber or a slightly larger refractive index. be able to.
  • the light absorption part exhibits optical termination when the tip 110 of the optical connection terminal is brought into contact with or pushed into the adhesive part 230 and light is emitted from the optical fiber attached to the optical connection terminal. .
  • the light emitted from the optical fiber attached to the optical connection terminal is not reflected at the interface between the optical fiber tip and the adhesive, but penetrates and diffuses into the adhesive part, and is absorbed by the light absorption part. .
  • the light absorbing part includes the cap part 210 and the bottom part 220, and can absorb light diffused by the adhesive part 230 by coloring at least the inner surface or the outer surface of the cap part 210. it can.
  • the bottom part 220 which is the light absorbing part, may be separable from the cylindrical part 211. In this case, when the adhesive force of the adhesive part 230 is reduced, the adhesive part 230 and the bottom part 220 are replaced with new ones. The cleaning function can be regenerated by replacing with.
  • the material of the light absorbing portion is not particularly limited, but at least the bottom 220 itself, the inner surface, or the outer surface on which the adhesive portion 230 is provided can be colored.
  • the light absorbing portion may be an integral structure made of a colored material, or may be colored on the inner surface of a case of a certain material or a thin film layer such as a paint or a film made of another material.
  • a plate material lining or the like may be provided.
  • the adhesive force between the light absorbing part and the adhesive part 230 is stronger than the adhesive force between the tubular part 211 and the adhesive part 230.
  • the adhesive part 230 and the bottom part 220 are replaced with new ones.
  • the adhesive part 230 can be replaced without leaving an adhesive on the side of the cylindrical part 211.
  • the material having good compatibility with the adhesive part 230 include polycarbonate (PC) resin, acrylonitrile / butadiene / styrene (ABS) copolymer resin, or a mixed resin of PC resin and ABS resin.
  • the light absorbing portion is preferably a structure made of a colored resin in terms of the above and the ease of manufacture and inexpensiveness, and is more preferably a structure made of a colored PC resin, ABS resin, or a mixed resin thereof. Is preferred.
  • the above-mentioned colored PC resin, ABS resin, or mixed resin thereof can be produced by a known manufacturing method.
  • the colorant is not particularly limited as long as it can absorb light emitted from the optical fiber. Considering the ease of light absorption, a black colorant is preferable, and examples thereof include carbon black and phthalocyanine blue.
  • the amount of the colorant added is not particularly limited, but is preferably 0.1 to 10% by weight with respect to the resin composition of the light absorbing portion.
  • the light transmittance of the light absorbing portion is preferably 10% or less, more preferably 2% or less, and even more preferably 1% or less.
  • the lower limit of the light transmittance is not particularly limited, but is, for example, 0.1%. By setting the transmittance in such a range, a high return loss can be obtained.
  • the measurement of the light transmittance can be carried out with the following device, for example.
  • the transmittance at each wavelength can be measured with a spectrophotometer UV-3100 (manufactured by Shimadzu Corporation). Table 1 shows examples of measurement conditions.
  • the antistatic process of a protective cap The material used for each part (a cap part, a cylindrical part, a case part, an adhesion part) of the protective cap concerning this invention can use what gave the antistatic process. By doing so, the protective cap according to the present invention can be prevented from being charged due to friction when the connector is attached / detached, and the connector, cable, communication device and the like to which the protective cap is attached are protected from static electricity. It is possible to prevent dust from adhering to the inside and outside of the protective cap.
  • the antistatic processing is not particularly limited.
  • an antistatic agent or a conductive material (conductive filler, fiber, etc.) is included in the surface of the material (base material) or inside, and the generated static electricity is discharged into the air.
  • a method of bringing a conductive material such as a conductor into contact with the material and grounding can be used in combination.
  • antistatic agent known ones can be used and are not particularly limited as long as the effects of the present invention are not impaired.
  • glycerin fatty acid ester polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, XX-bis (2-hydroxyethyl) alkylamine, y-2-hydroxyethyl-y-2 hydroxyalkylamine, polyoxyethylene alkylamine ,
  • Nonionic surfactants such as polyoxyethylene alkylamine fatty acid esters and alkyldiethanolamides; anionic surfactants such as alkylsulfonates, alkylbenzenesulfonates, and alkyl phosphates; tetraalkylammonium salts, trialkylbenzylammonium Cationic surfactants such as salts; amphoteric surfactants such as alkylbetaines and alkylimidazolium betaines; and the like can be used.
  • the antistatic agent can be used in combination.
  • the usage method is not specifically limited, For example, it can use by the method of apply
  • the sustainability of the effect can be improved by including an antistatic agent therein.
  • an antistatic agent is applied to the surface, the effect is lost due to deterioration or wiping due to moisture in the atmosphere, but when the antistatic agent is contained inside the material, the antistatic agent inside the material is The continuity of the effect is increased by bleeding on the surface with time.
  • a material having a conductivity in the range of 1 ⁇ 10 0 to 1 ⁇ 10 7 S ⁇ cm ⁇ 1 can be used, and a known conductive material can be used. it can.
  • the conductive material is not particularly limited as long as it does not hinder the effects of the present invention.
  • metals such as silver, copper, nickel, aluminum, iron; natural graphite, artificial graphite, isotropic graphite, carbon black, pyrocarbon And conductive carbon materials such as fullerenes, carbon nanotubes, carbon fibers, expanded graphite, and glassy carbon; conductive polymers; conductive glass.
  • the shape of the conductive material is not particularly limited as long as the effect of the present invention is not hindered, and is plate-shaped (disk-shaped, polygonal shape, etc.), columnar (columnar, polygonal columnar shape, etc.), fibrous (long fiber) , Short fibers, etc.), particles (spherical, polygonal, etc.), membranes, etc. can be used.
  • the usage method is not specifically limited, For example, it can use by the method of embed
  • the method using the conductor can further improve the sustainability of the antistatic effect as compared with the method using the antistatic agent.
  • each part (cap part, cylindrical part, case part, adhesive part) of the protective cap according to the present invention can be prevented from being charged by bringing a conductor such as a conductor into contact therewith.
  • the conductor may be used without being grounded or may be used while being grounded. When not grounded, the static electricity charged in the protective cap is discharged into the air. In the case of grounding, since the static electricity charged in the protective cap is grounded, the antistatic effect can be further improved.
  • the method of grounding is not particularly limited.
  • the protective cap may be connected to a ground terminal such as a switchboard of a building or facility.
  • the said connection should just connect at least 1 with the said earth terminal among each part (a cap part, a cylindrical part, a case part, an adhesion part) of the said protective cap, and is not connected with the said earth terminal.
  • the portion only needs to be electrically connected to the portion connected to the ground terminal.
  • Method for Producing Protective Cap Formation of the adhesive part 230 includes, for example, pouring a monomer component that constitutes the adhesive part 230 into the cap part 210, performing heating, light irradiation through the cylindrical part 211, and the like to remove the monomer component. It may be formed by a method of curing (crosslinking) or the like, and the tubular portion 211 may be fitted after the adhesive portion 230 is formed on the bottom portion 220 using a frame or the like.
  • the adhesive part is a resin foam
  • a resin foam produced by a manufacturing method described in JP 2012-56985 A may be attached to the bottom part 220 via an adhesive or the like.
  • a nonwoven fabric improves the contact property to the front-end
  • the cylindrical part 211 and the bottom part 220 can be produced by a known method. For example, extrusion molding using a mold, injection molding, or machining from a bulk material can be used.
  • Example 2 of protective cap Based on FIG. 5, the example 2 of a protection cap is demonstrated.
  • the optical connection terminal 100 is provided with a through-hole through which the optical connection terminal 100 can penetrate to the inside beyond the tubular portion 311, the optical connection terminal 100 is provided inside the case part 301, and the optical connection terminal 100 is It is a protective cap 300 having an adhesive portion 330 arranged at a position where the tip of the optical connection terminal 100 inserted can be contacted when inserted into the case portion 301 through a through hole. .
  • the protective cap 300 is provided on the case part 301 and attached to the optical connection terminal 100 with the tip 110 of the optical connection terminal 100 and the adhesive part 330 in contact with each other. You may have the light absorption part which exhibits optical termination property, when it makes it light-emit from an optical fiber.
  • the protective cap 300 may be a protective cap 300 that can support a plurality of optical connection terminals 100 and / or optical connection terminals 100 having different shapes.
  • the case portion 301 according to the present invention has a cylindrical portion 311 to be described in detail later, and when the optical connection terminal 100 is inserted into the cylindrical portion 311, the optical connection terminal 100 is A through hole that can penetrate through the cylindrical portion 311 to the inside is provided, and can further include an adhesive portion 330 that will be described in detail later, and optionally a light absorbing portion that will be described in detail later. .
  • the case part 301 can be separated into a cover part 310 provided on the surface with the cylindrical part 311 and a bottom part 320 provided with the adhesive part 330, and is fitted in use. It can be fixed by means or the like.
  • the cover part 310 and the bottom part 320 separable, it becomes easy to make the material of both members different.
  • the material of the lid portion 310 having the cylindrical portion 311 is a material excellent in insertion property with the optical fiber tip portion
  • the material of the bottom portion 320 is a material excellent in adhesion (adhesion) with the adhesive portion 330. It becomes easy to carry out.
  • the material of the case portion 301 is not particularly limited, and examples thereof include resin, metal, ceramics, and glass.
  • the lid 310 and the bottom 320 may be made of the same material or different materials. The thing suitable for the characteristic of each site
  • the cylindrical portion in the present invention is provided on the surface of the case portion 301.
  • the size and shape of the cylindrical portion are not particularly limited, and for example, it is preferable to match the size and shape of the optical connection terminal 100 assembled to the optical fiber terminal portion or the tip portion thereof. (For example, a cylindrical shape or a rectangular tube shape).
  • the sizes and shapes of the respective cylindrical portions are inserted into the plurality. It is also possible to use a type ⁇ 311 (a) to (c) ⁇ that matches the size and shape of the type of optical connection terminal.
  • the tubular portion is obtained by matching the size and shape of the tubular portion with the size and shape of the same type of optical connection terminal to be inserted ⁇ for example, 311 (a) to (C) ⁇ .
  • size and shape of the said cylindrical part when the said optical connection terminal is inserted, the magnitude
  • the cylindrical portion 311 is designed so that the distal end surface 111 of the optical connection terminal comes into contact with the surface of the adhesive portion 330 provided in the case when the optical connection terminal 100 is inserted. Can do.
  • the cylindrical portion 311 can be designed to have a structure that can be locked using a claw portion provided in the optical connection terminal 100 when the optical connection terminal 100 is inserted.
  • the cylindrical portion 311 may be an integrally molded product with the case portion or the lid portion 310, or may be a collective component that is manufactured and assembled as a separate component.
  • the material of the cylindrical part 311 may be the same as or different from the material of the case part or the lid part 310, and is not particularly limited. For example, a metal, ceramics, resin, glass, etc. are mentioned.
  • the material of the cylindrical portion 311 is preferably a resin, considering that the optical connection terminal 100 is repeatedly inserted and the optical connection terminal 100 is not damaged, and a flexible molded resin is inserted into the optical connection terminal 100. More preferable in terms of fit and retention, and polyethylene resin and polypropylene resin having low adhesion to the adhesive part 330 are more preferable. Since the polyethylene resin and the polypropylene resin have a relatively high surface energy, the adhesive force of the adhesive is not high.
  • the tip surface 111 of the optical connection terminal 100 into which the deposits are inserted may be contaminated, which is not preferable.
  • Adhesive part The adhesive part 330 in the present invention is in contact with the inserted front end surface 111 of the optical connection terminal, or by pushing the front end surface 111 of the optical connection terminal and removing it, the optical connection terminal It is possible to remove contaminants such as dust adhering to the front end surface 111.
  • the adhesive portion 330 has an adhesive force sufficient to remove the dust attached to the front end surface 111 of the optical connection terminal and the periphery thereof, and the optical connection terminal front end surface 111 that has been contacted or pushed in, or It can be adjusted to have an internal cohesive force that prevents the adhesive from adhering to the tip 110 of the optical connection terminal.
  • the adhesive part 330 can be a substantially transparent adhesive, and can have a refractive index that is the same as or slightly larger than the refractive index of the optical fiber, as will be described later.
  • the adhesive part 330 can have a so-called optical termination function in which light emitted from the optical fiber is not reflected by the optical fiber by being combined with a light absorbing part described later. Thereby, in the return loss measurement performed after wiring processing, a high return loss, that is, a non-reflection state or a substantially non-reflection state can be obtained at the end.
  • the adhesive portion 330 is provided in the case portion 301, and the thickness thereof is not particularly limited, but is 0.05 mm or more, preferably 1 mm or more, more preferably 3 mm or more. If the thickness of the adhesion part 330 is 3 mm or more, even if it is a case where the MPO connector which has a pin is contact
  • the material of the adhesive part 330 can be the same as that of the adhesive part 230 described above.
  • the physical properties of the pressure-sensitive adhesive can be the same as the physical properties of the pressure-sensitive adhesive of the pressure-sensitive adhesive portion 230 described above.
  • the adhesive part 230 of the above-mentioned description part shall be read as the adhesive part 330.
  • the light absorbing part according to the present invention has the following effects when the adhesive part is made of a substantially transparent adhesive having the same refractive index as the optical fiber or a slightly larger refractive index. it can.
  • the light absorbing portion exhibits optical termination when light is emitted from an optical fiber attached to the optical connection terminal with the distal end 110 of the optical connection terminal in contact with or pressed into the adhesive portion 330. .
  • the light emitted from the optical fiber attached to the optical connection terminal is not reflected at the interface between the optical fiber tip and the adhesive, but penetrates and diffuses into the adhesive part, and is absorbed by the light absorption part. .
  • the light absorbing part is a bottom part 320 of the case part 301, and diffuses in the adhesive part 330 by coloring at least the case 301 itself, the inner surface, or the outer surface provided with the adhesive part 330.
  • the absorbed light can be absorbed.
  • the bottom part 320 that is the light absorbing part may be separable from the lid part 310. In this case, when the adhesive force of the adhesive part 330 is reduced, the adhesive part 330 and the bottom part 320 are replaced with new ones. By exchanging, the cleaning function can be regenerated.
  • the material of the light absorbing portion may be the same as the material of the light absorbing portion described in the first aspect of the protective cap.
  • the protective cap 200 in the above-described description is replaced with the protective cap 300, the cylindrical portion 211 as the cylindrical portion 311, the bottom portion 220 as the lid portion 320, and the adhesive portion 230 as the adhesive portion 330, respectively. To do.
  • the characteristics of the light absorption section can be the same as the characteristics of the light absorption section described in Embodiment 1 of the protective cap.
  • the adhesive part 330 may be formed according to the material and the like.
  • the monomer component constituting the adhesive part 330 is poured into the bottom part 320, and the monomer component is heated or irradiated with light. It may be formed by a method of curing (crosslinking).
  • the cover part 310 is covered, the adhesive part 330 is covered, and the protective cap 300 can be manufactured.
  • the adhesive portion is a resin foam
  • a resin foam produced by a manufacturing method described in JP 2012-56985 A may be attached to the bottom portion 220 with an adhesive or the like.
  • a nonwoven fabric improves the contact property to the front-end
  • the monomer component flows in from the through hole of the cylindrical part 311, fills the case part with the monomer component, and irradiates ultraviolet rays through the through hole of the cylindrical part 311.
  • the adhesive part 330 can also be formed.
  • the lid part 310, the bottom part 320, etc. can be produced by a known method. For example, extrusion molding using a mold, injection molding, or machining from a bulk material can be used.
  • the protective cap according to the present invention includes a cylindrical portion of the protective cap and an optical connection terminal to be assembled to the optical fiber terminal portion.
  • the claw portion) and a second locking portion (for example, a convex structure) provided in the cylindrical portion. Therefore, the protective cap and the optical fiber terminal portion are not naturally detached during the wiring work, and workability is improved.
  • the cap part 410 of the protective cap 400 according to the present invention shown in FIG. 10 includes a cylindrical part 411 and a bottom part 420 which will be described in detail later, and an adhesive part 430 (see FIG. 13) which will be described later. Can have a light absorbing portion to be described in detail later.
  • the protective cap of this aspect is used as a pair with the optical connection terminal 101 assembled to the optical fiber terminal portion shown in FIG.
  • the optical connection terminal 101 is used by being inserted into the insertion port 401 provided in the tubular portion 411 of the protective cap 400. Therefore, the shape of the insertion port 401 can be manufactured in accordance with the shapes of the insertion portion 114, the movable lever 112, and the claw portion 113 (first locking portion) of the optical connection terminal 101.
  • the cap part 410 can be separated into the cylindrical part 411 and the bottom part 420 provided with the adhesive part 430, and can be fixed during use.
  • the cylindrical part 411 and the bottom part 420 separable as described above it becomes easy to make the materials of both members different.
  • the material of the cylindrical portion 411 is made a material excellent in insertion property with the optical fiber tip
  • the material of the bottom portion 420 is made a material excellent in adhesion (adhesion) with the adhesive portion 430. It becomes easy.
  • the protective cap according to the present invention may be in the form of a single protective cap as shown in FIG. 10, or may be in the form in which a plurality of protective caps are integrated as shown in FIG. 11 shows an example in which four protective caps having the same shape are integrated.
  • the number of protective caps to be integrated, the arrangement, the individual shapes of the protective caps (may have a plurality of types of connector shapes), etc. are not particularly limited, The design can be changed according to the shape, weight, application, etc. of the optical connection terminal.
  • the cap part 410 includes a cylindrical part 411 and a bottom part 420 which will be described in detail later, and further includes an adhesive part 430 which will be described later, and optionally a light absorption part which will be described in detail later. Can do.
  • the cap part 410 can be separated into the cylindrical part 411 and the bottom part 420 provided with the adhesive part 430, and can be fixed during use.
  • the cylindrical portion and the bottom portion can be fixed using a simple fitting fixing method, a fixing method using a nail, a fixing method using a screw, a fixing method using insertion, a fixing method using adhesion, or the like. it can.
  • the cylindrical part 411 and the bottom part 420 separable as described above, it becomes easy to make the materials of both members different.
  • the material of the cylindrical portion 411 is made a material excellent in insertion property with the optical fiber tip
  • the material of the bottom portion 420 is made a material excellent in adhesion (adhesion) with the adhesive portion 430. It becomes easy.
  • the material of the cap portion 410 is not particularly limited, and examples thereof include resin, metal, ceramics, and glass. Further, the cylindrical portion 411 and the bottom portion 420 may be made of the same material or different materials. The thing suitable for the characteristic of each site
  • the cylindrical part 411 in the present invention is a main part constituting the cap part 410.
  • the size and shape of the cylindrical portion are not particularly limited, and are adapted to the size and shape of the optical connection terminal 101 assembled to the optical fiber terminal portion, for example.
  • the cylindrical portion 411 has a guide groove 402 on the inner side thereof along which the claw portion 113 of the leaf spring-like movable lever 112 provided in the optical connection terminal 101 is provided.
  • the guide groove 402 is (1) until the optical connection terminal distal end portion 111 comes into contact with or is pushed into the adhesive portion 420, the claw portion 113 is moved to the leaf spring.
  • the movable lever 112 has a structure (shape) that can be guided in the compressing direction (connector body direction), and (2) at a position where the optical connection terminal tip 111 comes into contact with (or is pushed into) the adhesive portion 420.
  • a structure 404 (curved structure or space portion) for releasing the claw portion 113 is provided so that the compressed leaf spring-like movable lever 112 can be repelled and restored.
  • the tubular portion 411 is engaged with the claw portion 113 when the leaf spring-like movable lever 112 is restored, and the convex structure 403 (second locking portion) that prevents the optical connection terminal 101 from being pulled out.
  • the optical connection terminal 101 is fixed by the engagement between the claw portion 113 and the convex structure 403. In order to pull out the optical connection terminal 101, the optical connection terminal 101 can be pulled out by pressing the leaf spring-shaped movable lever 112 in the compressing direction.
  • the material of the tubular part 411 can be the same as the material of the tubular part 211 described above.
  • the cylindrical portion 211 is read as the cylindrical portion 411
  • the adhesive portion 230 is read as the adhesive portion 430.
  • Adhesive part The adhesive part 430 in the present invention can be the same as the adhesive part 230 described above.
  • the cap part 210 of the above-described description part is read as the cap part 410
  • the bottom part 230 is read as the bottom part 430
  • the adhesive part 230 is read as the adhesive part 430.
  • the material of the adhesive part 430 may be the same as the material of the adhesive part 230 described above.
  • the properties of the pressure-sensitive adhesive can be the same as the properties of the pressure-sensitive adhesive of Embodiment 1 of the protective cap described above.
  • the pressure-sensitive adhesive 230 in the above-described description is to be read as pressure-sensitive adhesive 430.
  • the light absorbing part according to the present invention has the following effects when the adhesive part is made of a substantially transparent adhesive having the same refractive index as the optical fiber or a slightly larger refractive index. it can.
  • the light absorbing unit exhibits optical termination when light is emitted from an optical fiber attached to the optical connection terminal with the tip 110 of the optical connection terminal in contact with or pressed into the adhesive portion 430. . At this time, the light emitted from the optical fiber attached to the optical connection terminal is not reflected at the interface between the optical fiber tip and the adhesive, but penetrates and diffuses into the adhesive part, and is absorbed by the light absorption part. .
  • the light absorbing part includes the cap part 410 and the bottom part 420, and absorbs light diffused by the adhesive part 430 by coloring at least the inner surface or the outer surface of the cap part 410. it can.
  • the bottom part 420 which is the light absorbing part may be separable from the cylindrical part 411. In this case, when the adhesive force of the adhesive part 430 decreases, the adhesive part 430 and the bottom part 420 are replaced with a new one. The cleaning function can be regenerated by replacing with.
  • the material of the light absorbing portion is not particularly limited, but may be the same as the material of the light absorbing portion described in the first aspect of the protective cap.
  • the protective cap 200, the lid portion 210, the lid portion 420, the adhesive portion 230, and the adhesive portion 430, respectively, of the protective cap 200, the lid portion 210, the bottom portion 220, and the adhesive portion 430, are described.
  • the light transmittance of the light absorbing section can be the same as the characteristics of the light absorbing section described in the first aspect of the protective cap.
  • the antistatic process of the protective cap The material used for each part (cap part, cylindrical part, case part, adhesive part) of the protective cap according to the present invention is the antistatic process of the protective cap described in the first aspect of the protective cap. It can be similar to that.
  • Method for Producing Protective Cap Formation of the adhesive portion 430 includes, for example, pouring a monomer component constituting the adhesive portion 430 into the cap portion 410, and performing heating, light irradiation through the cylindrical portion 411, and the like to remove the monomer component. It may be formed by a method of curing (crosslinking) or the like, or after forming the adhesive portion 430 on the bottom portion 420 using a frame or the like, the tubular portion 411 may be fitted.
  • the cylindrical part 411 and the bottom part 420 can be produced by a known method. For example, extrusion molding using a mold, injection molding, or machining from a bulk material can be used.
  • the protective cap serves as a terminal block for protection, cleaning, and return loss measurement of the optical connection terminal 100 by an operation of attaching or removing the optical connection terminal 100 to or from the protection cap 200 (300).
  • the complicated operation of use can be omitted. That is, the operator can save time and effort to remove the optical connection terminal 100 from the protective cap 200 (300) each time cleaning or measurement of return loss is performed in the optical fiber connection work, thereby improving work efficiency. Can do.
  • a protective cap 200 (300) according to the present invention uses, as a guide, a cylindrical portion 211 (311) manufactured according to the shape of the optical connection terminal 100 assembled to an optical fiber terminal portion, for example, as an optical
  • the distal end portion 110 of the connection terminal can be used by being inserted into the tubular portion 211 (311).
  • the distal end portion 110 of the optical connection terminal passes through the tubular portion 211 (311) along the inner edge of the tubular portion 211 (311) and is accommodated in the cap portion or the case portion. (330) can be abutted or pushed into.
  • the optical connection terminal 100 is locked by fitting with the inserted cylindrical portion 211 (311). Accordingly, the optical connection terminal 100 is completely covered with the cylindrical portion 211 (311), and thus is protected from damage received from the outside. At the same time, contaminants such as dust can be prevented from entering, and the optical connection terminal 100 is protected from contamination.
  • the optical connection terminal 100 can be detached by pulling it out from the inserted tubular portion 211 (311).
  • the cylindrical portion 211 (311) can be repeatedly used by inserting the same or different optical connection terminal 100.
  • the protective cap 200 (300) according to the present invention is a distal end portion of an optical connection terminal using, as a guide, a cylindrical portion manufactured according to the shape of the optical connection terminal 100 assembled to the optical fiber terminal portion. 110 can be used by being inserted into the cylindrical portion 211 (311).
  • the distal end portion 110 of the optical connection terminal is attached to the cap portion or the case portion 330 (330) through the tubular portion 211 (311) along the inner edge of the tubular portion 211 (311). ) Or can be pushed.
  • the optical connection terminal 100 can be locked by fitting with the inserted tubular portion 211 (311).
  • the optical connection terminal distal end portion 110 and the optical connection terminal distal end surface 111 can be provided in a clean state. This eliminates the need for the operator to clean the optical connection terminal distal end portion 110 or the optical connection terminal distal end surface 111 again, thereby improving work efficiency.
  • the said adhesive part 230 (330) can be used repeatedly, and when the frequency of use increases, adhesive force will fall. That is, the cleaning ability is reduced. In that case, by removing the bottom 220 (320) provided with the adhesive part 230 (330), it is possible to replace it with a new adhesive part 230 (330) and the bottom part 220 (320). Can be recovered.
  • the protective cap 200 (300) uses the cylindrical portion 211 (311) manufactured according to the shape of the optical connection terminal 100 assembled to the optical fiber terminal portion as a guide.
  • the distal end portion of the connection terminal can be used by being inserted into the tubular portion 211 (311).
  • the distal end portion 110 of the optical connection terminal abuts on the adhesive portion 230 (330) housed inside through the tubular portion 211 (311) along the inner edge of the tubular portion 211 (311). Or it can be pushed in.
  • the said optical connection terminal 100 can be latched by fitting with the cylindrical part 211 (311) inserted.
  • the protective cap 200 (300) can be used as a terminal block, and reflection at the end face of the connector can be excluded, and the return loss can be measured in a non-reflective state.
  • the operator removes the optical connection terminal 100 from the protective cap 200 (300), presses it against the terminal block, measures the return loss, and attaches the protective cap 200 (300). Can be omitted.
  • the protective cap of the present invention when configured to have an optical termination function, it can be held in the backyard with the protective cap of the present invention attached to the spare wiring of the optical fiber. Thereby, for example, when some trouble occurs in the used wiring, it can be replaced with the spare wiring immediately.
  • this invention is demonstrated based on an Example and a comparative example, this invention is not limited to the content of an Example.
  • the following examples are examples carried out in accordance with the above-described protective cap embodiment 2.
  • the lid part was produced by molding PE resin.
  • the cylindrical part has a shape that fits with the outer diameter part of the ferrule provided on the SC connector (compliant with IEC 6175-4) and the LC connector (compliant with IEC 6175-4), which are optical connection terminals used for measurement, It was produced by integral molding.
  • the height of the cylindrical part was 4 mm with respect to the length of the ferrule 5.8 mm, and the ferrule tip surface (optical connection terminal tip surface 111) was in contact with the internal adhesive part.
  • the following composition was used for the adhesive used for the adhesive part.
  • UV adhesive Examples 1 to 7, Comparative Example 1 Elastic polymer: Toagosei Co., Ltd., 2-EHA 100 parts by weight UV-crosslinking resin: Daicel Ornex Co., Ltd., HDDA 1 part by weight UV polymerization initiator: BASF, Irgacure 184 1 part by weight UV curing aid: Showa Denko Co., Ltd., Karenz MT PE1 0.1 weight part
  • the said composition was poured into the bottom part mentioned later, and the bottom part 320 was satisfy
  • the gel fraction of the adhesive part was 95%.
  • the refractive index was 1.47.
  • the bottom part was prepared by molding a colored ABS resin by adding 1% by weight of carbon black to the ABS resin, and used as a light absorption part.
  • Example 2 was the same as Example 1 except that the composition of the adhesive portion was changed as follows and the refractive index was adjusted to 1.44 by mixing a low refractive index resin.
  • Elastic polymer Toagosei Co., Ltd., 2-EHA 100 parts by weight
  • UV crosslinking resin DIC Corporation
  • Defensor OP-4004 100 parts by weight
  • UV polymerization initiator BASF
  • UV curing aid Showa Denko KK
  • Karenz MT PE1 0.1 parts by weight
  • Examples 3 to 5 were the same as Example 1 except that only the thickness of the adhesive portion was changed as shown in Table 2.
  • Example 6 was the same as Example 1 except that the cylindrical part was made of ABS resin.
  • Example 7 was the same as Example 1 except that the ultraviolet irradiation conditions were changed and the gel fraction was 78%.
  • Comparative Example 1 a protective cap similar to that in Example 1 was produced, and the ferrule tip surface did not contact the adhesive part.
  • 2-EHA (additionally added): Toagosei Co., Ltd. 48 parts by mass Acrylic acid: Toagosei Co., Ltd. 12 parts by weight
  • 2-EHA, polyoxyethylene polyoxypropylene glycol, and dibutyltin dilaurate were placed in a container and reacted at a temperature of 65 ° C. for 4 hours while dropping and stirring the hydrogenated xylylene diisocyanate. Thereafter, the mixture was reacted for 2 hours while dropping and stirring HEA to obtain a hydrophilic polyurethane polymer / ethylenically unsaturated monomer composition.
  • hydrophilic polyurethane polymer / ethylenically unsaturated monomer composition 100 parts by mass of the obtained hydrophilic polyurethane polymer / ethylenically unsaturated monomer composition, 2-EHA (additionally added) and acrylic acid are added, and the hydrophilic polyurethane polymer / ethylenically unsaturated monomer is added. A composition was obtained.
  • 1,6-hexanediol diacrylate manufactured by Shin-Nakamura Chemical Co., Ltd., trade name “NK Ester A-HD-N” 10 parts by mass Urethane acrylate having HEA at both ends: synthesized from polytetramethylene glycol and isophorone diisocyanate 56 parts by mass Diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide: BASF Corp., Lucillin TPO 0.5 parts by mass Hindered phenol antioxidant: BASF Corp., Irganox 1010 1.0 part by mass Previous In 100 parts by mass of the obtained hydrophilic polyurethane-based polymer / ethylenically unsaturated monomer composition, 1,6-hexanediol diacrylate having the above composition, urethane acrylate having HEA at both ends, diphenyl (2, 4, 6-trimethylbenzoyl) phosphie Oxide, I
  • This sheet was irradiated with ultraviolet light having an irradiation intensity of 5 mW / cm 2 from an irradiation unit for epi-illumination of a UV spot light source (trade name: L2859-01, manufactured by Hamamatsu Photonics), and then further irradiated at 130 ° C. for 12 minutes.
  • a foam having a thickness of about 0.3 mm was obtained by heating. The obtained foam was accommodated in the produced bottom portion to obtain a protective cap of Example 8.
  • the pore diameter and the pore density were adjusted by changing only the stirring conditions and the standing time of the W / O emulsion of Example 8.
  • the pore diameter and the pore density of each resin foam used in Examples 8 to 10 were randomly determined at 20 locations on the surface of each resin foam using a scanning electron microscope (manufactured by Hitachi High-Technologies: S-3200). The average value was selected and observed at 200 times. The results are shown in Table 2.
  • ⁇ Measurement method of return loss> For light reflection measurement, single-core and multi-core were measured.
  • the SC connector was assembled to both ends of a single-core silica-based single-mode optical fiber UV core wire (manufactured by Sumitomo Electric Co., Ltd., outer diameter 0.25 mm ⁇ , refractive index 1.452 at 20 ° C.).
  • One SC connector side is connected to a reflection loss measurement device (JDS Uniphase reflection meter RM3750 + 1FA7), and the other SC connector is fitted to the cylindrical portion 221 to measure the return loss with a single mode wavelength of 1310 nm. did.
  • a 12-fiber quartz single-mode optical fiber ribbon (manufactured by Sumitomo Electric Co., Ltd., outer diameter 0.25 mm ⁇ , refractive index 1.452 at 20 ° C.) is used as one end fan-out wiring.
  • An SC connector was attached and the other end was subjected to MT connector processing.
  • the SC connector side was connected to a reflection attenuation measuring device (JDS Uniphase-made reflection meter RM3750 + 1FA7), the MT connector was pressed against the optical termination film, and the reflection attenuation was measured at a single mode wavelength of 1310 nm.
  • Optical connection terminal 111 The front end surface 112 of an optical connection terminal
  • the movable lever 113 Claw part (1st latching
  • Protective cap 210, 410, 510 Cap part 310 Lid part 211, 311, 411, 511 Cylindrical part 220, 320, 420, 520 Bottom part (light absorption part) 230, 330, 430, 530

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un moyen à l'aide duquel il est possible d'empêcher l'encrassement d'une borne de liaison optique y compris si de la poussière est présente sur une surface de paroi d'un capuchon protecteur ou similaire. La solution selon l'invention porte sur un capuchon protecteur permettant de protéger une borne de liaison optique incorporée dans une section de borne de fibre optique, le capuchon protecteur comprenant : une section cylindrique dans laquelle peut être insérée la borne de liaison optique ; une section de boîtier, sur une surface de laquelle est disposée la section cylindrique, et dans laquelle est ménagé un trou traversant à travers lequel la borne de liaison optique peut pénétrer à l'intérieur lorsque la borne de liaison optique a été insérée dans la section cylindrique ; et une section adhésive qui est disposée à l'intérieur de la section de boîtier, et est disposée dans une position telle qu'une extrémité distale de la borne de liaison optique insérée peut venir en butée contre la section adhésive lorsque la borne de liaison optique a été insérée à l'intérieur de la section de boîtier par l'intermédiaire du trou traversant.
PCT/JP2018/017322 2017-04-28 2018-04-27 Capuchon protecteur WO2018199331A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-090144 2017-04-28
JP2017090144A JP2020109426A (ja) 2017-04-28 2017-04-28 保護キャップ

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WO2018199331A1 true WO2018199331A1 (fr) 2018-11-01

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WO2022066226A1 (fr) * 2020-09-22 2022-03-31 Clearfield Inc. Capuchon anti-poussière avec dispositif de nettoyage intégré
US11681108B2 (en) 2020-09-22 2023-06-20 Clearfield, Inc. Dustcap with built-in cleaner

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WO2015017170A1 (fr) * 2013-07-31 2015-02-05 Corning Optical Communications LLC Ensemble connecteur de fibre optique à capuchon collecteur de particules
JP2016175061A (ja) * 2015-03-18 2016-10-06 株式会社巴川製紙所 端面クリーナ
US20160349460A1 (en) * 2015-05-29 2016-12-01 Corning Optical Communications LLC Fiber optic cable assemblies with cap apparatuses for sealing optical fiber connectors and associated methods

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JP2002219421A (ja) * 2001-01-25 2002-08-06 Fujikura Ltd 光コネクタ端面清掃具および光コネクタ端面清掃方法
JP2004012625A (ja) * 2002-06-04 2004-01-15 Fujikura Ltd 光コネクタのキャップ装着構造
JP2006235502A (ja) * 2005-02-28 2006-09-07 Sanwa Denki Kogyo Co Ltd 光プラグ用フェルールの保護キャップ
JP2009069385A (ja) * 2007-09-12 2009-04-02 Okano Electric Wire Co Ltd コネクタキャップ、対照システム
WO2015017170A1 (fr) * 2013-07-31 2015-02-05 Corning Optical Communications LLC Ensemble connecteur de fibre optique à capuchon collecteur de particules
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022066226A1 (fr) * 2020-09-22 2022-03-31 Clearfield Inc. Capuchon anti-poussière avec dispositif de nettoyage intégré
US11422314B2 (en) 2020-09-22 2022-08-23 Clearfield, Inc. Dustcap with built-in cleaner
US11675139B2 (en) 2020-09-22 2023-06-13 Clearfield, Inc. Dust cap with built-in cleaner
US11681108B2 (en) 2020-09-22 2023-06-20 Clearfield, Inc. Dustcap with built-in cleaner
US12007609B2 (en) 2020-09-22 2024-06-11 Clearfield, Inc. Dustcap with built-in cleaner

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