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WO2021055285A1 - Serre-câble pour câble de télécommunications - Google Patents

Serre-câble pour câble de télécommunications Download PDF

Info

Publication number
WO2021055285A1
WO2021055285A1 PCT/US2020/050720 US2020050720W WO2021055285A1 WO 2021055285 A1 WO2021055285 A1 WO 2021055285A1 US 2020050720 W US2020050720 W US 2020050720W WO 2021055285 A1 WO2021055285 A1 WO 2021055285A1
Authority
WO
WIPO (PCT)
Prior art keywords
worm screw
band
clamp
screw housing
cable
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2020/050720
Other languages
English (en)
Inventor
Samory DE ZITTER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commscope Technologies LLC
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
Application filed by Commscope Technologies LLC filed Critical Commscope Technologies LLC
Publication of WO2021055285A1 publication Critical patent/WO2021055285A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/30—Installations of cables or lines on walls, floors or ceilings
    • H02G3/32—Installations of cables or lines on walls, floors or ceilings using mounting clamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
    • F16B2/08—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands

Definitions

  • the present disclosure relates to clamping a portion of a telecommunications cable.
  • Telecommunications systems typically employ a network of telecommunications cables capable of transmitting large volumes of data and voice signals over relatively long distances.
  • Telecommunications cables can include fiber optic cables, electrical cables, or combinations of electrical and fiber optic cables.
  • a typical telecommunications network also includes a plurality of telecommunications enclosures integrated throughout the network of telecommunications cables.
  • the telecommunications enclosures or “closures” are adapted to house and protect telecommunications components such as splices, termination panels, power splitters, wave division multiplexers, fiber management trays, cable organizing and routing components, etc.
  • cables entering telecommunications enclosures must be fixed in place inside the enclosure.
  • protective components of the cable such as a jacket, a buffer tube, strength members, etc., are stripped, truncated, or removed, allowing the optical fibers held by the cable to be managed within the closure.
  • One or more of these cable components may be fixed in place using a cable fixation assembly.
  • Portions of telecommunications cables typically are fixed to other structures as well, such as walls, ceilings, racks, cabinets, shelves, drawers, poles, beams, supports, pipes, other cables, etc.
  • Fixing cables in telecommunications closures can be important to minimize damage to, or over-bending of, the exposed fibers within the closure. In other areas of a telecommunications network it is likewise important to prevent shifting of telecommunications cables.
  • the present disclosure is directed to improvements in clamps for telecommunications cables.
  • a cable clamp in accordance with the present disclosure clamps a portion of a cable to another structure.
  • Non-limiting examples of such structures include another cable, a pipe, a beam, a cabinet, a closure, a rack, a shelf, a drawer, a panel, a body of a cable fixation assembly, etc.
  • Non-limiting examples of the portion of the cable that can be clamped with a cable clamp in accordance with the present disclosure include an outer jacket, a buffer tube, a strength member, a grounding component, etc.
  • one or more components of the cable clamp are made from an electrically conductive material and the cable clamp can conductively couple a portion of the cable it is clamping to an electrical ground.
  • one or more components of the cable clamp are made from metal, such as steel.
  • one or more components of the cable clamp and/or components to which the cable clamp is coupled are made from a polymeric material.
  • one or more components of the cable clamp are made from a non-electrically conductive material.
  • Cable clamps in accordance with the present disclosure include one or more features that can improve access to the adjustment mechanism that allows for tightening and loosening of the cable clamp, particularly in an area with a high density of cables where the close proximity of one cable can limit accessibility to the cable clamp of another cable.
  • Cable clamps in accordance with the present disclosure include one or more features that can improve the resistance to unintentional loosening of the cable clamp.
  • Clamps in accordance with the present disclosure may be used to clamp objects other than telecommunications cables or other cables.
  • Non-limiting examples of other objects that can be clamped with clamps of the present disclosure include hoses, pipes, and rods.
  • the contents of PCT International Application No. PCT/US2020/014634 filed January 22, 2020 are hereby incorporated by reference in their entirety.
  • a clamp for securing an object comprises: a band defining an axis extending between a first axial end and a second axial end of the band along an elongate dimension of the band; a worm screw, the worm screw including: a head; and a threaded shaft extending from the head to a shaft end; and a worm screw housing fixedly attached at an attachment position to the band and capturing at least a portion of the worm screw in a position such that the head of the worm screw is closer than the shaft end of the worm screw to the first axial end of the band and such that the worm screw can rotate relative to the worm screw housing, wherein the band, the worm screw, and the worm screw housing are configured to cooperate such that when the worm screw rotatably engages the band, the second axial end advances relative to the worm screw housing and the first axial end is stationary relative to the worm screw housing.
  • a clamp for securing an object comprises: a band defining an axis extending between a first axial end and a second axial end of the band along an elongate dimension of the band; a worm screw, the worm screw including: a head; and a threaded shaft extending from the head to a shaft end; and a worm screw housing fixedly attached to the band at an attachment position and capturing at least a portion of the worm screw such that the worm screw can rotate relative to the worm screw housing, wherein the band, the worm screw, and the worm screw housing are configured to cooperate such that when the worm screw rotatably engages the band, the second axial end moves relative to the worm screw housing and the first axial end is stationary relative to the worm screw housing, and wherein the band includes a generally looped portion and first and second tail portions extending from first and second opposite ends, respectively, of the generally looped portion and extending away from a center of the looped portion
  • method of clamping a telecommunications cable to a structure comprises: providing a band, a worm screw, and a worm screw housing, the band defining an axis extending between a first axial end and a second axial end of the band along an elongate dimension of the band, the worm screw including a head and a threaded shaft extending from the head to a shaft end; fixedly attaching the worm screw housing to the band at an attachment position such that the worm screw is rotatably captured within the worm screw housing and such that the worm screw can rotate relative to the worm screw housing; wrapping the band around a portion of the telecommunications cable and the structure such that the band includes a generally looped portion and first and second tail portions extending from first and second opposite ends, respectively, of the generally looped portion and extending away from a center of the looped portion, the generally looped portion receiving the portion of the telecommunications cable and the structure, and the worm screw housing being
  • inventive aspects can relate to individual features and to combinations of features. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the broad inventive concepts upon which the embodiments disclosed herein are based.
  • FIG. l is a perspective view of a prior art cable clamp.
  • FIG. 2 is a top view of portions of three telecommunications cables arranged in parallel, each of the cables including a prior art cable clamp of FIG. 1 clamped thereto.
  • FIG. 3 is a perspective view of an example cable clamp in accordance the present disclosure.
  • FIG. 4 is a further perspective view of the cable clamp of FIG. 3.
  • FIG. 5 is an exploded view of the cable clamp of FIG. 3.
  • FIG. 6 is a side view of the cable clamp of FIG. 3.
  • FIG. 7 is a further side view of the cable clamp of FIG. 3.
  • FIG. 8 is a cross-sectional view of the cable clamp of FIG. 3 along the line A-A in
  • FIG. 9 is a cross-sectional view of the cable clamp of FIG. 3 along the line B-B in
  • FIG. 10 is a further side view of the cable clamp of FIG. 3.
  • FIG. 11 is a top view of the cable clamp of FIG. 3.
  • FIG. 12 is a bottom view of the cable clamp of FIG. 3.
  • FIG. 13 is a perspective view of the cable clamp of FIG. 3 with the cover removed.
  • FIG. 14 is a side view of a further example cable clamp in accordance with the present disclosure, the cable clamp being in a clamping configuration.
  • FIG. 15 is a top view of portions of three telecommunications cables arranged in parallel, each of the cables including a cable clamp of FIG. 14 in accordance with the present disclosure clamped thereto.
  • FIG. 1 a prior art clamp 10 that can be used for clamping a portion of a telecommunications cable to another structure is shown.
  • the clamp 10 includes a band 12 defining an axis 14 extending between a first axial end 16 and a second axial end 18 along an elongate dimension of the band 12.
  • a worm screw housing 20 is fixedly attached to the band 12.
  • the worm screw housing 20 captures a shaft of a worm screw 22 that includes a head 24 and a threaded shaft 26 extending from the head 24.
  • the worm screw 22 is rotatable within the worm screw housing 20 about a rotation axis 28 of the worm screw 22.
  • the band 12 includes a plurality of parallel slots 30 that are configured to engage threads of the worm screw 22.
  • the band 12 is wrapped around the object, and the axial end 18 of the band is fed into an opening 32 of the worm screw housing 20.
  • the worm screw 22 is rotated about the worm screw axis 28, with the threads of the worm screw sequentially engaging slots 30 of the band 12 such that the band 12 axially advances through the worm screw housing, tightening the band 12 around the object.
  • each of three of the clamps 10 is clamped to a protective end sleeve 40 of a cable 42a, 42b, 42c, respectively.
  • Each clamp 10 clamps the respective cable 42a, 42b, 42c to a structure 44, schematically represented.
  • the cables each have a central longitudinal axis 46a, 46b, 46c, respectively.
  • the rotation axes 28a, 28b, 28c, respectively, of the worm screws 22a, 22b, 22c are generally tangential to the curved outer jacket of the corresponding cable.
  • accessing the heads 24b, 24c of the corresponding worm screws 22b, 22c in order to rotate them to tighten or loosen the corresponding cable clamp can be challenging due to the parallel arrangement of the cables 42a, 42b, 42c, resulting in gaps 50b, 50c of limited size between adjacent cables.
  • FIGS. 3-13 a clamp 100, and/or components of the clamp, are shown that can provide one or more advantages over the clamp 10 of FIG. 1.
  • the clamp 100 can be used for clamping cables such as telecommunications cables to structures, such as closures, bodies of cable fixation assemblies, walls, poles, pipes, cabinets, racks, beams, drawers, other cables, etc.
  • the clamp 100 can be made from electrically conductive or electrically non-conductive material.
  • the clamp 100 is made from a metal, such as steel.
  • the clamp 100 is made from a polymeric material.
  • at least the band of the clamp 100 is made from a polymer and the threads of the worm screw are configured to dig into the polymer as the worm screw turns to provide an enhanced tightening of the clamp with improved resistance to loosening of the clamp.
  • the clamp 100 includes a band 112 defining an axis 114 extending between a first axial end 116 and a second axial end 118 along an elongate dimension of the band 112.
  • a worm screw housing 120 is fixedly attached to the band 112.
  • the worm screw housing 120 captures a threaded shaft 126 of a worm screw 122 that also includes a head 124, the threaded shaft 126 extending from the head 124.
  • the threaded shaft 126 includes threads 127.
  • the worm screw 122 is rotatable within the worm screw housing 120 about a rotation axis 128 of the worm screw 122.
  • the band 112 includes a plurality of parallel slots 130 that are configured to engage threads of the worm screw 122.
  • the band also defines a pair of opposite notches 152, 154 at the attachment position 150 of the worm screw housing 120.
  • the worm screw housing 120 includes a pair of tabs 156, 158 that are received in the notches 152, 154, respectively to fixedly attach the worm screw housing 120 to the band 112 at the attachment position 150.
  • the band 112 also defines a fully enclosed opening 160 at the attachment position 150.
  • the fully enclosed opening 160 is sized and positioned such that the threads 127 of the threaded shaft can enter and rotate within the enclosed opening 160 and/or extend therethrough but do not contact the border 162 of the enclosed opening 160 when the worm screw 122 is rotated about its rotation axis 128 (e.g., using a screw driver).
  • the axial length of the band 112 and the number of parallel slots 130 can be selected such that the clamp 100 can accommodate clamping of many different sized cables, and particularly cables of relatively small outer transverse diameter, e.g., cables having outer transverse diameters in a range from about 2 millimeters to about 15 millimeters.
  • the clamp 100 can be configured to clamp different portions of a cable, such as an outer jacket of a cable, a buffer tube positioned within the outer jacket, a strength member, an electrical grounding component of the cable, etc.
  • the band 112 can, in some examples, begin in a straight configuration, e.g., with the axis 114 forming a straight or generally straight line.
  • the band 112 is bent or otherwise shaped to form a generally looped portion 164 (that can be wrapped around a portion of the cable and the other structure to which the cable is to be clamped) and first and second tail portions 166, 168 extending from first and second opposite ends 170, 172, respectively, of the generally looped portion 164.
  • the first and second tail portions 166, 168 extend away from a center 174 of the looped portion.
  • the attachment position 150 where the worm screw housing 120 is fixedly attached to the band 112 is located at the tail portion 166.
  • the clamp 100 also includes a cover 180 for covering at least a portion of the worm screw housing 120 and at least a portion of the head 124 of the worm screw 122.
  • the cover includes a latch 182, and the worm screw housing 120 includes a tab 184 defining a window 186.
  • the worm screw housing 120 and the cover 180 are configured to lock together by engagement of the latch 182 and the window 186.
  • the latch 182 can be flexed away from the window 186 to unlock the cover 180 from the worm screw housing 120 and thereby allow the cover 180 to be removed from the worm screw housing 120.
  • the cover 180 With the cover 180 in position on the worm screw housing 120, the chance of inadvertent rotation of the worm screw 122 while clamped to a cable is minimized, thereby minimizing inadvertent loosening of the clamp.
  • the cover 180 can serve as an attachment means for attaching the cable clamp to another structure, e.g., another structure within a telecommunications closure.
  • the band 112 is wrapped around the object to form the generally looped portion 164 and tail portions 166, 168, and the axial end 118 of the band is fed into an opening 132 of the worm screw housing 120. Then, the worm screw 122 is rotated about the worm screw axis 128, with the threads of the worm screw sequentially engaging the slots 130 of the band 112 such that the band 112 axially advances through the worm screw housing, tightening the band 112 around the object.
  • the clamp 200 includes a band 112 and a worm screw 122 as described above, and a worm screw housing 220.
  • the worm screw housing 220 axially captures the shaft of the worm screw 122 while permitting rotation of the worm screw 122 about the screw rotation axis 128.
  • the band includes a generally looped portion 164 (that can be wrapped around a portion of the cable and the other structure to which the cable is to be clamped) and first and second tail portions 166, 168 extending from first and second opposite ends 170, 172, respectively, of the generally looped portion 164.
  • the first and second tail portions 166, 168 extend generally away from a center 174 of the looped portion.
  • the first and second tail portions 166, 168 extend from the first and second opposite ends 170, 172, respectively, generally parallel to the rotation axis 128 of the worm screw 122 and at unequal corresponding first and second angles a, b respectively, relative to the first and second opposite ends 170, 172.
  • the angle a is acute and the angle b is obtuse.
  • the angle a is a right angle and the angle b is obtuse.
  • both of the angles a and b are obtuse.
  • the first and second angles a, b are unequal to each other due to the cooperation of the tightening mechanism 290 (consisting of the worm screw 122 and the worm screw housing 220) with the band 112, and the fixation of the tail portion 166 to the worm screw housing 220.
  • each of three of the clamps 200a, 200b, 200c (each corresponding to the clamp 200 described above) is clamped to a protective end sleeve 40 of a cable 42a, 42b, 42c, respectively.
  • each cable includes an outer jacket, optionally one or more strength members, and one or more optical fibers for carrying optical signals, and/or one or more electrical wires for carrying electrical signals.
  • the clamps of the present disclosure can be used to clamp objects other than cables, such as hoses, pipes, rods, etc.
  • Each clamp 10 clamps the respective cable 42a, 42b, 42c to a structure 44, schematically represented.
  • the structure can be, e.g., one or more of a cable, a pole, a beam, a body of a cable fixation assembly, a cabinet, a rack, a drawer, a closure, etc.
  • the cables each have a central longitudinal axis 46a, 46b, 46c, respectively.
  • the rotation axes of the worm screws 122a, 122b, 122c are generally into and out of the page in FIG. 15, with the worm screw extending generally away from the corresponding cable axis as the worm screw extends from the shaft end to the head.
  • accessing the heads 124b, 124c of the corresponding worm screws 122b, 122c in order to rotate them to tighten or loosen the corresponding cable clamp 200b, 200c is facilitated despite the relatively high density of parallel cables and accompanying limited size of the gaps 50b, 50c between adjacent cables.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

L'invention concerne un serre-câble pour un câble de télécommunication. Ledit serre-câble comprend une bande qui comprend une partie généralement bouclée qui peut être enroulée autour d'une partie d'un câble de télécommunications et une autre structure, et une paire de parties de queue s'étendant à partir de la partie généralement bouclée. L'une des parties de queue est fixée à un boîtier à vis sans fin et l'autre partie de queue est conçue pour avancer par rapport au boîtier à vis sans fin lors de la rotation de la vis sans fin.
PCT/US2020/050720 2019-09-16 2020-09-14 Serre-câble pour câble de télécommunications Ceased WO2021055285A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962900898P 2019-09-16 2019-09-16
US62/900,898 2019-09-16

Publications (1)

Publication Number Publication Date
WO2021055285A1 true WO2021055285A1 (fr) 2021-03-25

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ID=74884571

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2020/050720 Ceased WO2021055285A1 (fr) 2019-09-16 2020-09-14 Serre-câble pour câble de télécommunications

Country Status (1)

Country Link
WO (1) WO2021055285A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11841543B2 (en) 2019-04-22 2023-12-12 Commscope Technologies Llc Cable fixation assembly with improved strength member yarn anchoring and method of anchoring cable strength member yarn
US11867872B2 (en) 2020-02-11 2024-01-09 Commscope Technologies Llc Cable fixation devices and arrangements with improved installation and space utilization at telecommunications enclosures
US12210204B2 (en) 2019-01-22 2025-01-28 Commscope Technologies Llc Cable fixation assemblies for telecommunications enclosures
US12372138B1 (en) 2024-01-23 2025-07-29 Panduit Corp. Double stack locking cleat

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200474488Y1 (ko) * 2013-05-30 2014-09-23 주식회사 앨토퍼스 케이블 보호캡
US20140304951A1 (en) * 2011-11-03 2014-10-16 Ron Dodd Tie for fixing an article to a surface
US9353892B2 (en) * 2011-09-16 2016-05-31 Cmp Products Limited Cable retaining apparatus
US9869338B2 (en) * 2015-10-14 2018-01-16 Cleva Smith Reusable clamp device
KR101927094B1 (ko) * 2017-06-22 2019-03-05 공종수 케이블밴드

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9353892B2 (en) * 2011-09-16 2016-05-31 Cmp Products Limited Cable retaining apparatus
US20140304951A1 (en) * 2011-11-03 2014-10-16 Ron Dodd Tie for fixing an article to a surface
KR200474488Y1 (ko) * 2013-05-30 2014-09-23 주식회사 앨토퍼스 케이블 보호캡
US9869338B2 (en) * 2015-10-14 2018-01-16 Cleva Smith Reusable clamp device
KR101927094B1 (ko) * 2017-06-22 2019-03-05 공종수 케이블밴드

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12210204B2 (en) 2019-01-22 2025-01-28 Commscope Technologies Llc Cable fixation assemblies for telecommunications enclosures
US11841543B2 (en) 2019-04-22 2023-12-12 Commscope Technologies Llc Cable fixation assembly with improved strength member yarn anchoring and method of anchoring cable strength member yarn
US11867872B2 (en) 2020-02-11 2024-01-09 Commscope Technologies Llc Cable fixation devices and arrangements with improved installation and space utilization at telecommunications enclosures
US12292612B2 (en) 2020-02-11 2025-05-06 Commscope Technologies Llc Cable fixation devices and arrangements with improved installation and space utilization at telecommunications enclosures
US12372138B1 (en) 2024-01-23 2025-07-29 Panduit Corp. Double stack locking cleat

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