EP3977189A1 - Splice holder and adapter for a telecommunications product - Google Patents

Splice holder and adapter for a telecommunications product

Info

Publication number
EP3977189A1
EP3977189A1 EP20728493.6A EP20728493A EP3977189A1 EP 3977189 A1 EP3977189 A1 EP 3977189A1 EP 20728493 A EP20728493 A EP 20728493A EP 3977189 A1 EP3977189 A1 EP 3977189A1
Authority
EP
European Patent Office
Prior art keywords
splice
optical fiber
type
adapter
channel
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.)
Withdrawn
Application number
EP20728493.6A
Other languages
German (de)
French (fr)
Inventor
Peter Claes
Heidi Bleus
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 Connectivity Belgium BVBA
Original Assignee
Commscope Connectivity Belgium BVBA
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 Connectivity Belgium BVBA filed Critical Commscope Connectivity Belgium BVBA
Publication of EP3977189A1 publication Critical patent/EP3977189A1/en
Withdrawn legal-status Critical Current

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
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4453—Cassettes
    • G02B6/4454—Cassettes with splices
    • 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

  • FIG. 13 is a bottom isometric view of the adapter.

Abstract

One aspect relates to a splice holder that includes sidewalls each including legs extending from a base at a first end, a body portion joining the legs at a second end, and a clip extending from the body portion and between the legs. The clip includes a distal end that is flexible to hold different types of optical fiber splices within the splice holder. Another aspect relates to an adapter for fitting between splice holders of a splice tray. The splice holders of the splice tray are shaped to constrain a first type of optical fiber splice while the adapter is shaped to constrain a second type and a third type of optical fiber splice.

Description

SPUICE HOUDER AND ADAPTER FOR A
TEUECOMMUNICATIONS PRODUCT
CROSS-REFERENCE TO REUATED APPUICATION
[0001] This application claims the benefit of U.S. Patent Application Serial No.
62/854,543, filed on May 30, 2019, the disclosure of which is incorporated herein by reference in its entirety.
BACKGROUND
[0002] Fiber optic networks utilize fiber optic cables that often require optical fiber splicing and storage. A splice tray can be used to store spliced optical fibers inside telecommunications equipment including closures, panels, cabinets, and the like. In certain examples, a splice tray can be used inside a telecommunications closure that includes one or more connector ports. One or more drop cables can be inserted into the connector ports to deliver the high bandwidth communication capabilities to one or more subscriber locations.
SUMMARY
[0003] This disclosure relates generally to devices used in the telecommunications industry. More particularly, this disclosure relates to devices for holding within the same area different types of optical fiber splices having different shapes and dimensions.
[0004] In one aspect, a splice tray comprises a base, a channel extending along a length of the base, and a splice holder projecting from the base. The splice holder includes sidewalls on opposite sides of the channel. Each sidewall includes legs extending from the base at a first end, a body portion joining the legs at a second end, and a clip extending from the body portion and between the legs. The clip includes a proximal end adjacent to the body portion and a distal end away from the body portion. The distal end of the clip being flexible to hold different types of optical fiber splices in a space between the channel and the sidewalls. [0005] Another aspect relates to an adapter for fitting between splice holders of a splice tray. The splice holders of the splice tray are shaped to constrain a first type of optical fiber splice while the adapter is shaped to constrain a second type and a third type of optical fiber splice. The adapter comprises an elongated body that includes opposing side panels. Each opposing side panel includes a rounded exterior surface and a planar interior surface. A bridge connects the opposing side panels. The bridge has a concave interior surface. A cavity is shaped by the planar and concave interior surfaces to constrain the second and third type of optical fiber splice.
[0006] A variety of additional inventive aspects will be set forth in the description that follows. The inventive aspects can relate to individual features and to combinations of features. It is to be understood that both the forgoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the broad inventive concepts upon which the examples disclosed herein are based.
DESCRIPTION OF THE FIGURES
[0007] The following drawing figures, which form a part of this application, are illustrative of the described technology and are not meant to limit the scope of the disclosure in any manner.
[0008] FIG. 1 is an isometric view of a splice tray.
[0009] FIG. 2 is a side view of the splice tray.
[0010] FIG. 3 is a top view of the splice tray.
[0011] FIG. 4 is a front view of the splice tray.
[0012] FIG. 5 is an isometric view of the splice tray and a first type of optical fiber splice. [0013] FIG. 6 is a side view of FIG. 5.
[0014] FIG. 7 is an isometric view of the splice tray and a second type of optical fiber splice.
[0015] FIG. 8 is a side view of FIG. 7.
[0016] FIG. 9 is an isometric view of the splice tray and a third type of optical fiber splice.
[0017] FIG. 10 is a side view of FIG. 9.
[0018] FIG. 11 is an isometric view of a splice tray and an adapter.
[0019] FIG. 12 is a top isometric view of the adapter.
[0020] FIG. 13 is a bottom isometric view of the adapter.
[0021] FIG. 14 is a side view of the adapter.
[0022] FIG. 15 is a front view of the adapter.
[0023] FIG. 16 is a top view of the adapter.
[0024] FIG. 17 is a bottom view of the adapter.
[0025] FIG. 18 is a cross-sectional view of the adapter fitted between splice holders.
[0026] FIG. 19 is a cross-sectional view of the adapter fitted between the splice holders with the second type of optical fiber splice constrained within the adapter.
[0027] FIG. 20 is a cross-sectional view of the adapter fitted between the splice holders with the third type of optical fiber splice constrained within the adapter. DETAILED DESCRIPTION
[0028] Various embodiments will be described in detail with reference to the drawings, wherein like reference numerals represent like parts and assemblies throughout the several views. Reference to various embodiments does not limit the scope of the claims attached hereto. Additionally, any examples set forth in this specification are not intended to be limiting and merely set forth some of the many possible embodiments for the appended claims.
[0029] FIG. 1 is an isometric view of a splice tray 10. The splice tray 10 includes a base 12 and a channel 14 that extends along a length of the base. Splice holders 100 project from the base 12 and are each centrally aligned with respect to the channel 14. As will be described in more detail, the splice holders 100 can be used to constrain different types of optical fiber splices.
[0030] FIGS. 2-4 are side, top, and front views, respectively, of the splice tray 10. In the example depicted in FIGS. 1-4, the splice tray 10 includes two splice holders 100 that are separated along the length of the channel 14 and centrally aligned with respect to the channel 14. In other examples, the splice tray 10 includes a single splice holder 100 that is centrally aligned with respect to the channel 14. In further examples, the splice tray 10 includes more than two splice holders 100 that are centrally aligned with the channel 14.
[0031] Referring now to FIGS. 1-4, each splice holder 100 includes sidewalls 102 on opposite sides of the channel 14. Each sidewall 102 includes legs 104 extending from the base 12 at a first end. Each sidewall 102 further includes a body portion 106 that joins the legs 104 at a second end. Additionally, each sidewall 102 includes a clip 108 extending from the body portion 106 and between the legs 104. The sidewalls 102 are mirror-image symmetrical
[0032] As shown in FIG. 2, the clip 108 includes a proximal end 110 adjacent to the body portion 106 and a distal end 112 away from the body portion. The distal end 112 of the clip 108 is flexible from a relaxed state (which is depicted in FIGS. 1-4) to a flexed state (see FIGS. 5-10) to hold different types of optical fiber splices in the splice holder
100.
[0033] As further shown in FIG. 2, the legs 104 have a first radius of curvature R1 and the clips 108 have a second radius of curvature R2 when in the relaxed state. The second radius of curvature R2 is less than the first radius of curvature R1 such that the clips 108 extend inwardly into a space 118 defined between the channel 14 and the sidewalls 102.
[0034] Still referring to FIG. 2, the body portion 106 of each sidewall 102 has an edge 114. The edges 114 on opposite sides of the channel 14 define an opening 116 that leads to the space 118 between the channel 14 and the sidewalls 102.
[0035] Additionally, each sidewall 102 further includes a planar surface 120 extending away from the body portion 106. The planar surfaces 120 on opposite sides of the channel 14 converge toward the opening 116 such that the planar surfaces 120 are configured to guide an optical fiber splice through the opening 116 and into the space 118. The opening 116 is expandable such that the opening 116 allows an optical fiber splice to be pushed through the opening.
[0036] Referring now to FIGS. 2 and 3, each leg 104 has a concave interior surface 122 continuous with the edge 114 and planar surface 120. The legs 104 are flexible in opposite directions Dl, D2 that are orthogonal with respect to the length of the channel 14 (see FIG. 3). The clips 108 are also flexible in opposite directions Dl, D2 that are orthogonal with respect to the length of the channel 14. Also, the distal ends 112 of the clips 108 are flexible in an outwardly direction D3 to hold an optical fiber splice (see FIG. 2).
[0037] The space 118 provides a first configuration 124 (see FIGS. 5 and 6), a second configuration 126 (see FIGS. 7 and 8), and a third configuration 128 (see FIGS. 9 and 10). Each of the first, second, and third configurations holds a different type of optical fiber splice. [0038] FIG. 5 is an isometric view of the splice tray 10 and a first type of optical fiber splice 210. FIG. 6 is a side view of FIG. 5. Referring now to FIGS. 5 and 6, the first configuration 124 holds the first type of optical fiber splice 210 between the legs 104 on opposite sides of the channel 14. In the first configuration 124, the distal ends 112 of the clips 108 are flexed in the outwardly direction D3 to hold the first type of optical fiber splice 210. Also, the planar surfaces 120 can help guide the first type of optical fiber splice 210 through the opening 116 (see FIG. 2), and the opening 116 expands to allow the first type of optical fiber splice 210 to be pushed into the space 118 between the channel 14 and the sidewalls 102. In the first configuration 124, the edges 114 constrain the first type of optical fiber splice 210 in the space 118. Thus, the edges 114 provide a snap-fit connection for the first type of optical fiber splice 220 into the space 118. The first type of optical fiber splice 210 has a circular cross-section and a first outside diameter OD1. In one example, the first outside diameter OD1 is about 2.8 mm.
[0039] FIG. 7 is an isometric view of the splice tray 10 and a second type of optical fiber splice 220. FIG. 8 is a side view of FIG. 7. As shown in FIGS. 7 and 8, the second configuration 126 holds the second type of optical fiber splice 220 between the channel 14 and the distal ends 112 of the clips 108. A distance between the distal ends 112 of the clips 108 on opposite sides of the channel 14 expands to allow the second type of optical fiber splice 220 to be pushed into the channel 14, and then contracts to constrain the second type of optical fiber splice 220 between the channel 14 and the distal ends 112 of the clips 108. Thus, the distal ends 112 provide a snap-fit connection for the second type of optical fiber splice 220 in the channel 14.
[0040] The second type of optical fiber splice 220 has a circular cross-section and a second outside diameter OD2. The second outside diameter OD2 is less than the first outside diameter OD1 of the first type of optical fiber splice 210. In one example, the second outside diameter OD2 of the second type of optical fiber splice 220 is about 1.25 mm. [0041] FIG. 9 is an isometric view of the splice tray 10 and a third type of optical fiber splice 230. FIG. 10 is a side view of FIG. 9. Referring now to FIGS. 9 and 10, the third configuration 128 holds the third type of optical fiber splice 230 between the channel 14 and the edges 114 of the body portions 106. A distance between the edges 114 on opposite sides of the channel 14 expands to allow the third type of optical fiber splice 230 to be pushed into the channel 14, and then contracts to constrain the third type of optical fiber splice 230 between the channel 14 and the edges 114. Thus, the edges 114 provide a snap-fit connection for the third type of optical fiber splice 230 into the channel 14. Also, in the third configuration 128, the distal ends 112 of the clips 108 engage a side surface of the third type of optical fiber splice 230 to further restrain the third type of optical fiber splice 230 in the space 118 between the sidewalls 102.
[0042] As shown in FIGS. 9 and 10, the third type of optical fiber splice 230 has a rectangular cross-sectional shape. In one example, the third type of optical fiber splice 230 has a width W of about 1.2 mm and a height H of about 3.5 mm.
[0043] Still referring to FIGS. 9 and 10, optical fibers 232, 234 extend from opposite ends of the third type of optical fiber splice 230. The optical fibers 232, 234 belong to fiber optic cables that are spliced together by the third type of optical fiber splice 230.
The fiber optic cables can be one or more drop cables that are inserted into connector ports of a telecommunications closure to deliver the high bandwidth communication capabilities to one or more subscriber locations. Advantageously, the optical fibers 232, 234 are partially housed inside the channel 14.
[0044] FIG. 11 is an isometric view of a splice tray 300. As shown in FIG. 11, an adapter 400 is inserted between splice holders 302. The splice holders 302 are shaped to constrain the first type of optical fiber splice 210 (see FIGS. 5 and 6). The adapter 400 adapts the splice holders 302 to constrain the second and third types of optical fiber splice 220, 230. [0045] FIGS. 12-17 are top isometric, bottom isometric, side, front, top, and bottom views, respectively, of the adapter 400. Referring now to FIGS. 12-17, the adapter 400 has an elongated body 402 that includes opposing side panels 404. Each opposing side panel 404 includes a rounded exterior surface 410 and a planar interior surface 412.
[0046] As shown in FIG. 14, the elongated body 402 further includes a bridge 406 that connects the opposing side panels 404. The bridge 406 has a concave interior surface 414 that is continuous with the planar interior surfaces 412 of the opposing side panels 404. Also, the bridge 406 has a convex exterior surface 416 that is continuous with the rounded exterior surfaces 410.
[0047] As further shown in FIG. 14, a cavity 418 is shaped by the planar interior surfaces 412 and concave interior surfaces 414 which are continuous with one another. The cavity 418 is shaped to constrain the second and third types of optical fiber splice 220, 230 which each have a width or diameter less than a width or diameter of the first type of optical fiber splice 210. In one example, the planar interior surfaces are separated by a uniform distance UD1 of about 1.3 mm, and the concave interior surface has a radius R1 of about 0.65 mm.
[0048] In some examples, each planar interior surface 412 includes a projection 420 at a distal end that defines an opening 422 to the cavity 418. The projections 420 on the planar interior surfaces 412 of the opposing side panels 404 mutually project toward one another. Advantageously, the projections 420 can help maintain the second and third types of optical fiber splice 220, 230 in the cavity 418 of the adapter 400.
[0049] FIG. 18 is a cross-sectional view of the adapter 400 fitted between splice holders 302 of the splice tray 300. Referring now to FIGS. 14 and 18, the rounded exterior surfaces 410 of the opposing side panels 404 retain the adapter 400 between the splice holders 302. For example, the rounded exterior surfaces 410 are configured to slide past declined surfaces of the splice holders 302 and to then engage inclined surfaces of the splice holders 302. Thus, the adapter 400 is configured to snap-fit between the splice holders 302 in the splice tray 300.
[0050] FIG. 19 is a cross-sectional view of the adapter 400 fitted between splice holders 302 of the splice tray 300 with the second type of optical fiber splice 220 constrained within the adapter 400. As shown in FIG. 19, the cavity 418 of the adapter 400 is shaped to simultaneously constrain two optical fiber splices of the second type 220 in a stacked arrangement. Each optical fiber splice of the second type 220 has a circular cross-sectional shape.
[0051] FIG. 20 is a cross-sectional view of the adapter 400 fitted between the splice holders 302 of the splice tray 300 with the third type of optical fiber splice 230 constrained within the adapter 400. As shown in FIG. 20, the cavity 418 of the adapter 400 is shaped to constrain the third type of optical fiber splice 230 having a rectangular cross-sectional shape.
[0052] Splice trays 10, 300 can be discrete elements that mount to a larger tray or other support structures that house additional splice trays 10, 300 and/or fibers including fiber slack. Splice trays 10, 300 can house one or more splices, typically parallel to each other with a plurality of the splice holders provided side by side. See for example the splice tray 300 of FIG. 11, where twelve separate splices can be held. The splice trays 10, 300 can also be integrally formed with the larger tray or other support structure(s).
[0053] The various embodiments described above are provided by way of illustration only and should not be construed to limit the claims attached hereto. Those skilled in the art will readily recognize various modifications and changes that may be made without following the example embodiments and application illustrated and described herein, and without departing from the true spirit and scope of the following claims.

Claims

What is claimed is:
1. A splice tray comprising:
a base;
a channel extending along a length of the base; and
a splice holder projecting from the base, the splice holder including sidewalls on opposite sides of the channel, each sidewall including:
legs extending from the base at a first end;
a body portion joining the legs at a second end; and
a clip extending from the body portion and between the legs, the clip including a proximal end adjacent to the body portion and a distal end away from the body portion, the distal end of the clip being flexible to hold different types of optical fiber splices in a space between the channel and the sidewalls.
2. The splice tray of claim 1, wherein the legs have a first radius of curvature, and the clips have a second radius of curvature when in a relaxed state, wherein the second radius of curvature is less than the first radius of curvature.
3. The splice tray of claim 1, wherein the legs are flexible in opposite directions that are orthogonal with respect to the length of the channel.
4. The splice tray of claim 1, wherein the clips are flexible in opposite directions that are orthogonal with respect to the length of the channel.
5. The splice tray of claim 1, wherein the body portion of each sidewall defines an edge, and wherein the edges on opposite sides of the channel define an opening leading to the space between the channel and the sidewalls.
6. The splice tray of claim 5, wherein the legs have a first radius of curvature, the clips have a second radius of curvature less than the first radius of curvature, and the second radius of curvature causes the clips to extend inwardly into the space.
7. The splice tray of claims 1 or 6, wherein the distal ends of the clips are flexible in an outwardly direction to hold an optical fiber splice.
8. The splice tray of claim 1, wherein the space provides a first configuration, a second configuration, and a third configuration, each of the first, second, and third configurations being configured to hold a different type of optical fiber splice.
9. The splice tray of claim 8, wherein the first configuration holds a first type of optical fiber splice between the legs on opposite sides of the channel, the first type of optical fiber splice having a circular cross-section and a first outside diameter.
10. The splice tray of claim 9, wherein the first outside diameter is about 2.8 mm.
11. The splice tray of claims 8 or 9, wherein the second configuration holds a second type of optical fiber splice between the channel and the distal ends of the clips, the second type of optical fiber splice having a circular cross-section and a second outside diameter, the second outside diameter being less than the first outside diameter of the first type of optical fiber splice.
12. The splice tray of claim 11, wherein a distance between the distal ends of the clips on opposite sides of the channel expands to allow the second type of optical fiber splice to be pushed into the channel.
13. The splice tray of claim 11, wherein the second outside diameter is about 1.25 mm.
14. The splice tray of claims 8, 9, or 11, wherein the third configuration holds a third type of optical fiber splice between the channel and the edges of the body portions, the third type of optical fiber splice having a rectangular cross-sectional shape.
15. The splice tray of claim 14, wherein the third type of optical fiber splice has a width of about 1.2 mm and a height of about 3.5 mm.
16. The splice tray of claim 1, wherein each sidewall further includes a planar surface extending away from the body portion, and wherein the planar surfaces on opposite sides of the channel converge toward an opening between the sidewalls on opposite sides of the channel.
17. The splice tray of claim 16, wherein planar surfaces are configured to guide an optical fiber splice through the opening, and wherein the opening is configured to expand to allow an optical fiber splice to be pushed into the space between the channel and the sidewalls.
18. The splice tray of claim 17, wherein each leg has a concave interior surface.
19. The splice tray of claim 1, wherein the sidewalls are mirror-image symmetrical.
20. The splice tray as in any one of the preceding claims, comprising two splice holders each centrally aligned with respect to the channel.
21. The splice tray as in any one of the preceding claims, further comprising a plurality of splice holders for holding a plurality of separate splices.
22. An adapter for fitting between splice holders of a splice tray, the splice holders shaped to constrain a first type of optical fiber splice, the adapter comprising:
an elongated body that includes: opposing side panels, each opposing side panel including a rounded exterior surface and a planar interior surface;
a bridge connecting the opposing side panels, the bridge having a concave interior surface; and
a cavity shaped by the planar and concave interior surfaces to constrain a second type and a third type of optical fiber splice.
23. The adapter of claim 22, wherein the planar and concave interior surfaces shape the cavity to constrain the second and third types of optical fiber splices each having a width or diameter different than a width or diameter of the first type of optical fiber splice.
24. The adapter of claim 23, wherein the cavity of the adapter is shaped to
simultaneously constrain two optical fiber splices of the second type in a stacked arrangement, each optical fiber splice of the second type having a circular cross-sectional shape.
25. The adapter of claim 23, wherein the cavity of the adapter is shaped to constrain the third type of optical fiber splice having a rectangular cross-sectional shape.
26. The adapter of claim 22, wherein the rounded exterior surfaces of the opposing side panels are configured to retain the adapter between the splice holders.
27. The adapter of claim 26, wherein the rounded exterior surfaces are configured to slide past declined surfaces of the splice holders and engage inclined surfaces of the splice holders to snap-fit the elongated body between the splice holders.
28. The adapter of claim 22, wherein the planar and concave interior surfaces are continuous.
29. The adapter of claim 22, wherein the bridge has a convex exterior surface that is continuous with the rounded exterior surfaces of the opposing side panels.
30. The adapter of claim 22, wherein each planar interior surface includes a projection at a distal end that defines an opening to the cavity.
31. The adapter of claim 22, wherein the planar interior surfaces are separated by a uniform distance of about 1.3 mm, and the concave interior surface has a radius of about 0.65 mm.
32. The adapter of any of claims 22-31, further comprising a splice tray for holding one or more separate splices.
EP20728493.6A 2019-05-30 2020-05-27 Splice holder and adapter for a telecommunications product Withdrawn EP3977189A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962854543P 2019-05-30 2019-05-30
PCT/EP2020/064685 WO2020239827A1 (en) 2019-05-30 2020-05-27 Splice holder and adapter for a telecommunications product

Publications (1)

Publication Number Publication Date
EP3977189A1 true EP3977189A1 (en) 2022-04-06

Family

ID=70857197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20728493.6A Withdrawn EP3977189A1 (en) 2019-05-30 2020-05-27 Splice holder and adapter for a telecommunications product

Country Status (2)

Country Link
EP (1) EP3977189A1 (en)
WO (1) WO2020239827A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023200812A1 (en) * 2022-04-11 2023-10-19 Ppc Broadband, Inc. Adapter configured to permit a heat shrink splice holder portion of a fiber splice cassette to hold a mechanical crimp splice protector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5074635A (en) * 1990-05-21 1991-12-24 Minnesota Mining And Manufacturing Company Splice tray and method
US6249635B1 (en) * 1999-09-07 2001-06-19 Lucent Technologies, Inc. Universal fiber optic splice holder
US6801704B1 (en) * 2003-05-30 2004-10-05 Lucent Technologies Inc. Fiber optics splice holder
EP2074459A1 (en) * 2006-10-16 2009-07-01 3M Innovative Properties Company Splice holder device

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