WO2020092480A1 - Adaptateur pour presse-étoupe et unité de presse-étoupe - Google Patents

Adaptateur pour presse-étoupe et unité de presse-étoupe Download PDF

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Publication number
WO2020092480A1
WO2020092480A1 PCT/US2019/058730 US2019058730W WO2020092480A1 WO 2020092480 A1 WO2020092480 A1 WO 2020092480A1 US 2019058730 W US2019058730 W US 2019058730W WO 2020092480 A1 WO2020092480 A1 WO 2020092480A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable gland
adapter
cable
arm
connection
Prior art date
Application number
PCT/US2019/058730
Other languages
English (en)
Inventor
Wenyong Wu
Yu Zhao
Original Assignee
Commscope Technologies Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201821752524.6U external-priority patent/CN209590349U/zh
Priority claimed from CN201811272014.3A external-priority patent/CN111123450B/zh
Application filed by Commscope Technologies Llc filed Critical Commscope Technologies Llc
Publication of WO2020092480A1 publication Critical patent/WO2020092480A1/fr

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
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/4471—Terminating devices ; Cable clamps

Definitions

  • the present application relates to an adapter for a cable gland and a cable gland unit, wherein the adapter and the cable gland unit may be especially applied to hold a communication cable, and in particular an optical fiber trunk cable or patch cords.
  • An optical fiber trunk cable may include a plurality of optical fibers, and the optical fiber trunk cable may have a branch point. At the branch point, the optical fiber trunk cable may branch into a plurality of branch cables, each of which may include multiple optical fibers respectively.
  • the optical fiber trunk cable may include 96 optical fibers and branch into 8 branch cables at the branch point, wherein each branch cable comprises 12 optical fibers.
  • Each branch cable may have an optical fiber connector such as an MPO connector on its end.
  • the optical fiber trunk cable may be held in a mounting hole of a wall of an optical fiber distribution frame by a cable gland, and the optical fiber distribution frame may be inserted into an optical fiber distribution box.
  • An adapter for a cable gland which is known from US 9,448,365B2
  • the cylinder has a bottom with an opening and has a plurality of inner hexagons for matching with different sizes of cable glands on an inner circumference of the cylinder.
  • the object is achieved by an adapter for a cable gland, wherein the cable gland comprises a cable gland body having a cable passage and a front connection section, wherein the adapter comprises:
  • connection body configured to be connected with the connection section; and a plurality of elastic attachment clips projecting from the connection body, wherein the attachment clips are respectively provided with a snap groove configured for engaging with a hole edge of a mounting hole in a detachable manner, so as to enable the adapter to be held in the mounting hole.
  • the adapter according to the invention can be easily assembled with the cable gland. Therefore, it is only necessary to simply connect the adapter, for example screwing the same onto the cable gland.
  • the cable gland unit obtained accordingly can be easily and quickly snap-fit onto the hole edge of the mounting hole, and can be easily released from the mounting hole again.
  • connection section has an external thread
  • connection body is constructed as a nut body having an internal thread which is configured for screwing into the external thread of the connection section. Threaded coupling is a reliable connection manner that is widely used.
  • other connection manners are also possible, such as snap-fit connection, ultrasonic welding, and the like.
  • connection body has a first end side facing the cable gland and a second end side opposite to the first end side, wherein the attachment clip projects from the second end side of the nut body.
  • the attachment clip comprises a first arm projecting from a second end side of the connection body, and a second arm folding back from a distal end of the first arm towards the connection body, wherein the second arm is elastic in a radial direction of the connection body.
  • the attachment clip having a single arm is also possible.
  • the snap groove is disposed at a free end of the second arm.
  • a free end of the second arm has a first radial gap from the connection body in a free state, and the free end of the second arm has a second radial gap from the connection body in a mounted state that is reduced relative to the first radial gap.
  • the free end of the second arm has a radial projection
  • the connection body has a plurality of radial flange sections, wherein all the radial projections and all the radial flange sections form a circumferential flange in the mounted state.
  • the attachment clips may be evenly distributed over a circumference of the connection body.
  • the number of the attachment clips is two, three, four or more.
  • the adapter is integrally moulded from a plastic material, for example it may be made by injection molding. Accordingly, it is possible to manufacture the adapter in mass production at a low cost.
  • an adapter for a cable gland wherein the cable gland includes a cable gland body having a cable passage and a front connection section including an external thread, characterized in that, the adapter comprises:
  • connection body including an internal thread for mating with the external thread of the front connection section to secure the cable gland to the connection body
  • connection body having at least a portion integrated therewith including an elastic construction configured for securing the connection body within a mounting hole by a snap-fit connection.
  • the elastic construction includes at least one latch, in particular a plurality of latches.
  • the latch may be achieved at least one, in particular two or more, elastic arm(s) having a respective snap groove, and alternatively thereto the latch may also be achieved for example in such a manner that the whole body of the adapter or at least a section thereof can flex to provide a snap-fit connection.
  • a cable gland unit comprising a cable gland, wherein the cable gland comprises a cable gland body having a cable passage and a front connection section, wherein the cable gland unit further comprises the adapter for the cable gland according to the present invention.
  • the cable gland body has a rear section with an external thread
  • the cable gland comprises a cap with an internal thread, wherein the cap is configured for screwing with its internal thread into the external thread of the rear section.
  • the connection of the cap to the rear section may be achieved in any other manner.
  • the cap has a through hole which is configured for passage of an optical fiber trunk cable.
  • a cable gland unit comprising a cable gland body, wherein the cable gland body is provided with a cable passage, wherein the cable gland body is integrally constructed integrally, and the cable gland unit further comprises a plurality of elastic attachment clips projecting from the cable gland body, wherein the attachment clips are respectively provided with a snap groove configured for engaging with a hole edge of a mounting hole in a detachable manner, so as to enable the cable gland unit to be held in the mounting hole.
  • the attachment clips are evenly distributed over a
  • the number of the attachment clips is two, three, four or more.
  • the attachment clip comprises a first arm projecting from the cable gland body, and a second arm folding back from a distal end of the first arm towards the cable gland body, wherein the second arm is elastic in a radial direction of the cable gland body.
  • the snap groove is disposed at a free end of the second arm.
  • a free end of the second arm has a first radial gap from the cable gland body in a free state, and the free end of the second arm has a second radial gap from the cable gland body in a mounted state that is reduced relative to the first radial gap.
  • the free end of the second arm has a radial projection
  • the cable gland body has a plurality of radial flange sections, wherein all the radial projections and all the radial flange sections form a circumferential flange in the mounted state.
  • the cable gland body has a rear section with an external thread
  • the cable gland unit comprises a cap with an internal thread, wherein the cap is configured for screwing with its internal thread into the external thread of the rear section.
  • the cap has a through hole which is configured for passage of an optical fiber trunk cable.
  • FIG. 1 shows a perspective view of a cable gland unit according to an embodiment in an assembled state
  • FIG. 2 shows an exploded view of the cable gland unit according to FIG. 1;
  • FIGS. 3 and 4 respectively show different perspective views of the adapter of the cable gland unit according to FIG. 1;
  • FIG. 5 shows a perspective view of a cable gland unit according to another embodiment in an assembled state
  • FIG. 6 shows an exploded view of the cable gland unit according to FIG. 5;
  • FIGS. 7 and 8 show different perspective views of the cable gland body of the cable gland unit of FIG. 5 respectively.
  • FIG. 9 shows a schematic view of a cable gland unit connected onto an optical fiber distribution frame.
  • FIG. 1 shows a perspective view of a cable gland unit according to an embodiment in an assembled state
  • FIG. 2 shows an exploded view of the cable gland unit according to FIG. 1
  • FIGS. 3 and 4 respectively show different perspective views of the adapter of the cable gland unit according to FIG. 1.
  • the cable gland unit shown in FIGS. 1 and 2 comprises a cable gland 1 and an adapter 4.
  • a cable gland body 2 of the cable gland 1 has a connection portion 2a with an external thread on its front side and has a rear section 2b with an external thread on its rear side, wherein the cap 3 is screwed with its internal thread into the external thread of the rear section 2b.
  • the cap 3 may have through holes for introducing optical fiber trunk cables. One of the through holes 3a can be seen in FIG. 1.
  • the cable gland 1 may have a cable passage for passage by the optical fiber trunk cables.
  • the cable gland body 2 can be constructed in a tubular shape.
  • the cap 3 may compress an elastomeric gland element 11 housed within the cable gland body 2. When compressed, the gland element 11 may compress about a cable routed through the cable gland unit.
  • the gland element 11 is shown only in figure 2, and is spared in the other figures.
  • the cable gland unit can accommodate any type of cable.
  • Example cables can include fiber optic telecommunications cable (e.g., single or multi-fiber); copper
  • telecommunications cable such as twisted pair cable or co-axial cable; power cable; and/or hybrid cable.
  • the adapter 4 comprises a nut body 5 which may have an internal thread 10 (see FIGS. 3 and 4), wherein the nut body 5 can be detachably screwed with its internal thread 10 into the external thread of the connection section 2a.
  • the adapter 4 further comprises a plurality of (three in FIGS. 1-4) elastic attachment clips 6 projecting from the nut body 5, wherein the attachment clips are respectively provided with a snap groove 7 configured for engaging with a hole edge of a non-shown mounting hole in a detachable manner, so as to enable the adapter 4 to be held in the mounting hole.
  • the mounting hole may be constructed for example in a wall of an optical fiber distribution frame, and the optical fiber distribution frame may then be inserted into an optical fiber distribution box. With regard to the optical fiber distribution frame and the optical fiber distribution box, it is possible to refer to for example US 9,448,365B2 mentioned in the portion of background art of the present application.
  • the nut body 5 has a first end side facing the cable gland 1 and a second end side opposite to the first end side, wherein the attachment clip 6 projects from the second end side of the nut body.
  • the attachment clips 6 respectively comprise a first arm 6a projecting from a second end side of the nut body 5, and a second arm 6b folding back from a distal end of the first arm towards the nut body 5, wherein the second arm 6b is elastic in a radial direction of the nut body 5.
  • the snap groove 7 may be disposed at a free end of the second arm 6b.
  • the free end of the second arm 6b has a first radial gap from the nut body 5 in a free state.
  • the free end of the second arm 6b has a second radial gap from the nut body 5 in a mounted state that is reduced relative to the first radial gap due to radial compression by the hole edge of the mounting hole.
  • FIG. 9 shows a schematic view of a cable gland unit connected onto the optical fiber distribution frame in the form of a partial view.
  • the optical fiber passing through the cable gland unit is omitted, and only the main components of the cable gland unit are described.
  • the optical fiber distribution frame may have a plurality of mounting holes, each of which is inserted with one cable gland unit respectively.
  • the free end of the second arm 6b may have a radial projection 8, and the nut body 5 may have three radial flange sections 9 preferably at its first end side, wherein all the radial projections 8 and all the radial flange sections 9 may form a circumferential flange in the mounted state.
  • the flange may rest against the mounting hole, thus not only effectuating a favorable axial hold of the adapter 4 in the mounting hole but also realizing a favorable visual impression.
  • FIG. 5 shows a perspective view of a cable gland unit according to another embodiment in an assembled state
  • FIG. 6 shows an exploded view of the cable gland unit according to FIG. 5
  • FIGS. 7 and 8 show different perspective views of the cable gland body of the cable gland unit of FIG. 5 respectively.
  • the cable gland unit shown in FIGS. 5 to 8 comprises an integral cable gland body 12, which may be integrally molded from a plastic material, for example, it may be made by injection molding, and may have a cable passage passed by one or more optical fiber trunk cables.
  • the cable gland body 12 has a rear section l2b with an external thread on its rear side, and the cap 13 can be screwed with its internal thread into the external thread of the rear section l2b.
  • the cap 13 may have a through hole for introducing an optical fiber trunk cable.
  • the cable gland unit further comprises a plurality of (three in FIGS. 5-4) elastic attachment clips 16 projecting from the cable gland body 12, wherein the attachment clips are respectively provided with a snap groove 17 configured for engaging with a hole edge of a mounting hole in a detachable manner, so as to enable the cable gland unit to be held in the mounting hole.
  • the mounting hole may be constructed for example in a wall of an optical fiber distribution frame, and the optical fiber distribution frame may then be inserted into an optical fiber distribution box.
  • the attachment clip 16 may include a first arm l6a projecting from the cable gland body 12, and a second arm l6b folding back from a distal end of the first arm towards the cable gland body, wherein the second arm l6b is elastic in a radial direction of the cable gland body.
  • the snap groove 17 may be disposed at a free end of the second arm l6b.
  • the free end of the second arm l6b may have a first radial gap from the cable gland body 12 in a free state, and the free end of the second arm l6b may have a second radial gap from the cable gland body 12 in a mounted state that is reduced relative to the first radial gap due to radial compression by the hole edge of the mounting hole.
  • each attachment clip 16 is inserted into the mounting hole with the attachment clip 16 anteriorly. In the inserting process, each attachment clip
  • each attachment clip 16 or to say the second arm l6b of each attachment clip is compressed radially inward by the hole edge of the mounting hole, and the outer surface of each attachment clip 16 or to say the outer surface of each second arm l6b slides on the hole edge until the snap groove
  • the snap-fit connection of the snap groove 17 to the hole edge may be released, and then the cable gland unit may be withdrawn axially from the mounting hole.
  • the free end of the second arm l6b may have a radial projection 18, and the cable gland body 12 may have radial flange sections over its outer circumference, wherein all the radial projections 18 and all the radial flange sections may form a circumferential flange in the mounted state.
  • the flange may rest against the mounting hole, thus not only effectuating a favorable axial hold of the cable gland unit in the mounting hole but also realizing a favorable visual impression.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Cable Accessories (AREA)

Abstract

La présente invention concerne un adaptateur (4) pour un presse-étoupe, le presse-étoupe (1) comprenant un corps de presse-étoupe (2) ayant un passage de câble et une section de connexion avant (2a). L'adaptateur (4) comprend : un corps de connexion configuré pour être relié à la section de connexion (2a) et une pluralité de pinces de fixation élastiques (6) faisant saillie à partir du corps de connexion, les pinces de fixation étant respectivement pourvues d'une rainure d'encliquetage (7) configurée pour venir en prise avec un bord de trou d'un trou de montage de manière détachable, de façon à permettre à l'adaptateur d'être maintenu dans le trou de montage. La présente invention concerne également une unité de presse-étoupe comprenant un tel adaptateur et une unité de presse-étoupe intégrale, permettant ainsi d'obtenir une connexion rapide et détachable de l'unité de presse-étoupe dans le trou de montage.
PCT/US2019/058730 2018-10-30 2019-10-30 Adaptateur pour presse-étoupe et unité de presse-étoupe WO2020092480A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201821752524.6 2018-10-30
CN201821752524.6U CN209590349U (zh) 2018-10-30 2018-10-30 用于缆线固定头的适配器以及缆线固定头单元
CN201811272014.3 2018-10-30
CN201811272014.3A CN111123450B (zh) 2018-10-30 2018-10-30 用于缆线固定头的适配器以及缆线固定头单元

Publications (1)

Publication Number Publication Date
WO2020092480A1 true WO2020092480A1 (fr) 2020-05-07

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ID=70461978

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2019/058730 WO2020092480A1 (fr) 2018-10-30 2019-10-30 Adaptateur pour presse-étoupe et unité de presse-étoupe

Country Status (1)

Country Link
WO (1) WO2020092480A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US33132A (en) * 1861-08-27 Blacksmith s hearth
US7258496B2 (en) * 2002-02-08 2007-08-21 Fujikura Ltd. Optical fiber connection tool and optical fiber connection method
EP2902827A1 (fr) * 2014-02-03 2015-08-05 Prysmian S.p.A. Goupille de câble
US9557493B2 (en) * 2013-11-12 2017-01-31 Huawei Technologies Co., Ltd. Optical fiber joint, optical fiber adapter and optical fiber connector
US9817195B2 (en) * 2015-10-13 2017-11-14 3M Innovative Properties Company Cable sealing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US33132A (en) * 1861-08-27 Blacksmith s hearth
US7258496B2 (en) * 2002-02-08 2007-08-21 Fujikura Ltd. Optical fiber connection tool and optical fiber connection method
US9557493B2 (en) * 2013-11-12 2017-01-31 Huawei Technologies Co., Ltd. Optical fiber joint, optical fiber adapter and optical fiber connector
EP2902827A1 (fr) * 2014-02-03 2015-08-05 Prysmian S.p.A. Goupille de câble
US9817195B2 (en) * 2015-10-13 2017-11-14 3M Innovative Properties Company Cable sealing device

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