Optical fiber box

Abstract

A fiber optic cassette is provided that includes a body having a pair of side walls and an end wall. An adapter wall extends between the side walls. A partition wall extends between the side wall, the end wall, and the adapter wall. The partition wall is positioned in height between the top lip and the bottom lip of the side wall. A first volume is formed at a first side of the partition wall and a second volume is formed at a second side of the partition wall. A fiber storage region is positioned at the first volume and the second volume. The adapter holder is positioned at the first volume or the second volume. The cable opening is configured to receive an external cable into the first volume. The through opening is formed to allow the optical fiber to exit from the first volume to the second volume.

Description

[0001] Priority declaration

[0002] This application claims the benefit of U.S. Provisional Patent Application No. 63 / 522,556, filed on June 22, 2023, entitled “OPTICAL FIBER SPLICE AND CONNECTION CASSETTE,” and U.S. Provisional Patent Application No. 63 / 509,621, filed on June 22, 2023, entitled “OPTICAL FIBER SPLICE AND CONNECTION FASTENER,” the disclosures of which are incorporated herein by reference in their entirety. Technical Field

[0003] The present disclosure relates generally to fiber optic telecommunication boxes. Background Art

[0004] A common scenario in fiber optic communications is to establish optical connection points from fiber optic cables to fiber optic connections in modules within modular patch panels installed in data racks within data centers. However, when splicing fiber pigtails to fiber optic cables within the modules, limited space is available to provide fiber management, cable tying / installation points, and cable routing from the front or back of the box. Due to the lack of space, handling fiber and making splices is difficult and time consuming, which may limit connection points, increase costs excessively, or may adversely affect the quality of the connection.

[0005] Existing solutions often require access to the rear of the data rack and may not be adequate to perform splicing operations from the front of the data rack. Typically, the fiber storage area of ​​the splice box will be shared by both internal and external cable fibers, which increases the difficulty of splicing and creates the risk of fiber damage when re-entering the module to perform upgrades or troubleshoot.

[0006] It would be highly advantageous and beneficial to have a fiber optic splice and connection cassette and data rack that solves one or more of the problems set forth above. Summary of the invention

[0007] Aspects and advantages of the invention will be set forth in part in the following description, or may be understood from the description, or may be learned through practice of the invention.

[0008] One aspect of the present disclosure relates to a fiber optic cassette. The cassette defines a mutually orthogonal length, width, and height, the cassette comprising a body, the body comprising a pair of side walls extending along the length and an end wall extending along the width between the pair of side walls, the side walls and the end wall both extending along the height. An adapter wall extends between the side walls and is positioned away from the end wall along the length. A partition wall extends between the side walls, the end walls, and the adapter wall. The partition wall is positioned along the height between a top lip and a bottom lip of the side wall. A first volume is formed between the side walls, the end walls, and the adapter wall at a first side of the partition wall. A second volume is formed between the side walls, the end walls, and the adapter wall at a second side of the partition wall. A fiber storage area is positioned at the first volume and the second volume. A splice holder is positioned at the first volume or the second volume. A cable opening is formed at or between the end wall and at least one side wall. The cable opening is configured to receive an external cable into the first volume. A through opening is formed through the partition wall to allow optical fiber to exit from the first volume to the second volume.

[0009] Another aspect of the present disclosure relates to a fiber optic box. The box defines a mutually orthogonal length, width, and height, the box including a body, the body including a pair of side walls extending along the length and an end wall extending along the width between the pair of side walls, the side walls and the end wall both extending along the height. An adapter wall extends between the side walls and is positioned away from the end wall along the length. A partition wall extends between the side walls, the end walls, and the adapter wall. The partition wall is positioned along the height between a top lip and a bottom lip of the side wall. A first volume is formed between the side walls, the end walls, and the adapter wall at a first side of the partition wall. A second volume is formed between the side walls, the end walls, and the adapter wall at a second side of the partition wall. A fiber storage area is positioned at the first volume and the second volume. A splice holder is positioned at the first volume or the second volume. An adapter base wall extends along the width between the side walls and partially along the length. The adapter base wall is positioned at or near the adapter wall along the length. A cable entry channel is formed at the adapter base wall. The cable entry channel extends along the length. The cable entry channel is configured to allow external cables to enter the first volume. A through opening is formed through the partition wall to allow optical fibers to exit from the first volume to the second volume.

[0010] These and other features, aspects and advantages of the present invention will be better understood with reference to the following description and appended claims.The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] A full and enabling disclosure of the present invention, including the best mode thereof, is set forth to one of ordinary skill in the art in the specification with reference to the accompanying drawings, in which:

[0012] Figure 1A perspective view of one embodiment of a telecommunications box according to aspects of the present disclosure is provided;

[0013] Figure 2 A perspective view of one embodiment of a telecommunications box viewing an interior volume according to aspects of the present disclosure is provided;

[0014] Figure 3 A perspective view of one embodiment of a telecommunications box with a cover removed according to aspects of the present disclosure is provided;

[0015] Figure 4 A perspective view of one embodiment of a telecommunications box with a cover removed according to aspects of the present disclosure is provided;

[0016] Figure 5 A perspective view of one embodiment of a telecommunications box showing a first side is provided in accordance with aspects of the present disclosure;

[0017] Figure 6 According to various aspects of the present disclosure, a second side is provided. Figure 5 A perspective view of one embodiment of a telecommunications box;

[0018] Figure 7 According to various aspects of the present disclosure, Figure 5 A perspective view of one embodiment of a telecommunications box;

[0019] Figure 8 According to various aspects of the present disclosure, Figure 5 A perspective view of one embodiment of a telecommunications box;

[0020] Fig. 9 According to various aspects of the present disclosure, Figure 5 A perspective view of one embodiment of a telecommunications box;

[0021] Fig.10 A perspective view of one embodiment of a cover for a telecommunications box according to aspects of the present disclosure is provided;

[0022] Fig.11 An internal perspective view of one embodiment of a telecommunications box according to aspects of the present disclosure is provided;

[0023] Fig.12 An internal perspective view of one embodiment of a telecommunications box according to aspects of the present disclosure is provided;

[0024] Fig.13A The steps of a method of assembling a cable to a box according to aspects of the present disclosure are shown;

[0025] Fig. 13B The steps of a method of assembling a cable to a box according to aspects of the present disclosure are shown;

[0026] Fig. 13C The steps of a method of assembling a cable to a box according to aspects of the present disclosure are shown;

[0027] Fig.13D The steps of a method of assembling a cable to a box according to aspects of the present disclosure are shown;

[0028] Fig.13E The steps of a method of assembling a cable to a box according to aspects of the present disclosure are shown;

[0029] Fig.14 An exemplary method in one embodiment of routing cables to a box according to aspects of the present disclosure is shown;

[0030] Fig.15 An exemplary method in one embodiment of routing cables to a box according to aspects of the present disclosure is shown;

[0031] Fig.16 A plan view of an exemplary cable routing at a first volume of one embodiment of a box is provided in accordance with aspects of the present disclosure;

[0032] Fig.17 According to various aspects of the present disclosure, Fig.16 A plan view of an exemplary cable routing at a second volume of an embodiment of a box;

[0033] Fig.18A Exemplary ribbon fiber splice holders of embodiments of cassettes according to aspects of the present disclosure are provided;

[0034] Fig.18B Exemplary discrete fiber splice holders of embodiments of cassettes according to aspects of the present disclosure are provided;

[0035] Fig.19 An exemplary installation of an embodiment of a cartridge mounted to a data rack rack according to aspects of the present disclosure is shown;

[0036] Fig. 20A One embodiment of a fastener assembly for a fiber optic cable and method steps for assembling the cable to a cassette according to aspects of the present disclosure is provided;

[0037] Fig. 20B One embodiment of a fastener assembly for a fiber optic cable and method steps for assembling the cable to a cassette according to aspects of the present disclosure is provided;

[0038] Fig. 20C One embodiment of a fastener assembly for a fiber optic cable and method steps for assembling the cable to a cassette according to aspects of the present disclosure is provided;

[0039] Fig.20DOne embodiment of a fastener assembly for a fiber optic cable and method steps for assembling the cable to a cassette according to aspects of the present disclosure is provided;

[0040] Fig.20E A cross-sectional view of an exemplary embodiment of a fastener assembly at a fiber optic cable is provided; and

[0041] Fig.20F A perspective view of an exemplary embodiment of a fastener assembly at a fiber optic cable is provided. DETAILED DESCRIPTION

[0042] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are shown in the accompanying drawings. Each example is provided by way of illustration rather than limitation of the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made to the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment may be used together with another embodiment to produce yet another embodiment. Therefore, it is intended that the present invention covers such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0043] Embodiments of fiber optic boxes and data racks that solve one or more of the above problems are provided herein. Embodiments of fiber optic boxes can form fiber optic splicing and connection boxes or fiber optic boxes for pre-terminated optical fibers. Embodiments provided herein include modules that provide protective housings for optical fiber connections. Modules may include fiber optic adapters (such as, but not limited to, LC, SC, MPO, MDC, SN, etc. adapters), internal fiber pigtails, separated internal and external fiber optic slack storage areas (e.g., positioned at opposite sides of the box), cable stress relief fixing points, and front and rear entrances and exits for optical fiber cables.

[0044] The cassette 100 includes a body 110 configured to hold a fiber optic adapter wall 130 (e.g., the wall 130 includes a plurality of fiber optic adapters) and to form a fiber slack storage area 140. The body 110 includes a pair of side walls 108 extending along a length L. The body 110 includes an end wall 106 extending between the side walls 108 along a width W. The end wall 106 and the side walls 108 extend along a height H. It should be understood that the length L, width W, and height H may extend along mutually orthogonal axes. The length L of the side walls 108 may generally be greater than the width W of the end walls 106. The height H of the side walls 108 and the end walls 106 may generally be less than the width W or the length L. The adapter wall 130 extends between the side walls 108 along the width W. The end wall 106 is positioned opposite the adapter wall 130 along the length L.

[0045] In various embodiments, the body 110 can form an integral, one-piece component. For example, the body 110 can be formed as a single molded body. The body 110 can be formed as an integral, one-piece component using any suitable manufacturing method, such as, but not limited to, molding, extrusion, or additive manufacturing.

[0046] The box 100 includes a removable cover 120 to provide a base wall and a top wall at the body 110. For example, Figure 2 A top perspective view of one embodiment of a cassette 100 is shown. The body 110 includes a divider wall 118 extending between the side walls 108, the end walls 106, and the adapter wall 130. The divider wall 118 is positioned between the cover 120 that forms the top wall and the base wall. For example, the divider wall 118 is positioned between the top lip 109A and the bottom lip 109B of the side wall 108 along a height H. The divider wall 118 can be contoured along different heights between the lips 109A and 109B, for example, can be configured to vary the height of the volumes 101, 102 formed between the divider wall 118 and the corresponding cover 120. Reference Figure 3-4 , provides a top perspective view of one embodiment of a box 100. The embodiment of the box 100 includes a pair of covers 120, such as a bottom cover 120B forming a base wall and a top cover 120A forming a top wall. The covers 120 include a symmetrical configuration to allow the same cover configuration to be positioned as the top wall and the base wall.

[0047] refer to Figure 1-4 In various embodiments, the cover 120 includes a latch 122 that is configured to be selectively attached and released at a latch interface 123 of the side wall 108. The construction of the cover 120 including the latch 122 and the body 110 including the latch interface 123 can avoid the need to use mechanical fasteners (e.g., screws, nuts, bolts, threaded shanks, etc.) to hold the cover to the body. For example, the latch interface 123 can form a groove, a convex wall, or other surface at which the latch 122 (e.g., forming a clip) can selectively attach and release the cover 120 to the side wall 108.

[0048] Brief reference Fig.10 , a perspective view of one embodiment of a cover 120 is provided. An embodiment of the cover 120 may include a body having sidewalls 128 and end walls 126 extending along a height H (e.g., corresponding to the sidewalls 108 and the end wall 106, respectively). The cover 120 includes a face 127 extending along a length L and a width W, from which the sidewalls 128 and the end wall 126 extend. The cover 120 may be at least partially formed of a transparent material. For example, the face 127 may be formed of a transparent material (e.g., but not limited to, a plastic material) to allow a user to see into the volumes 101, 102 described below.

[0049] In other various embodiments, the adapter base wall 116 extends between the side walls 108 along a width W and partially extends along a length L corresponding to the adapter wall 130. For example, the adapter wall 130 can form a set of multiple adapters positioned between a pair of adapter base walls 116. For example, referring to Figure 2 , the first adapter base wall 116A extends from a top portion of the side walls 108 (eg, along a top lip of the height H) between the side walls 108. Figure 3 , a second adapter base wall 116B extends from a bottom portion of the side wall 108 (e.g., along a bottom lip of height H) between the side walls 108. In various embodiments, a cable entry channel 117 is formed at the adapter base wall 116. The channel 117 generally extends along the length L to allow external cables to enter the interior volume of the box 100, as further described herein and Fig.15 shown.

[0050] refer to Figure 4 In some embodiments, the adapter base wall 116 forms an opening 224 that is configured to receive a pin 124 extending from the cover 120. The pin 124 can form a locating pin that is configured to position the cover 120 relative to the body 110, such as positioning the cover 120 as a cover over an interior area extending between the side wall 108, the adapter wall 130, and the end wall 106.

[0051] In various embodiments, the cover 120, side walls 108, end walls 106, adapter wall 130, and divider wall 118 form a volume where splices, pigtails, pre-terminated optical fibers, and other operable components are stored and secured. Figure 2 A first volume 101 is formed between the side wall 108, the end wall 106, the adapter wall 130, the first side of the partition wall 118, and the top cover 120A. Figure 3 A second volume 102 is formed between the side wall 108, the end wall 106, the adapter wall 130, the second side of the partition wall 118 and the bottom cover 120B.

[0052] In certain embodiments, the dividing wall 118 includes a transition wall 105 extending along a height H. The transition wall 105 can form a slope that forms a profile from near the top lip 109A to near the bottom lip 109B. The transition wall 105 is positioned along the length L between the adapter wall 130 and the fiber slack storage area 140. For example, the storage area 140 can be positioned along the length L near the end wall 106 (e.g., away from the adapter wall 130 along the length L). The storage area 140 forms an area at the respective volumes 101, 102 where the fiber pigtails, excess fiber, or slack fiber are arranged, positioned, and retained.

[0053] In various embodiments, the transition wall 105 can extend along the height H to position the fiber optic adapter 131 extending into the first volume 101 or the second volume 102. For example, the transition wall 105 can substantially position the interior portion of the fiber optic adapter 131 and the fiber optic leads 194 extending therefrom in the first volume 101 or the second volume 102. For example, referring to Fig.17 , the transition wall 105 can position the fiber optic leads 194 extending from the fiber optic adapter 131 into the second volume 102, and the transition wall 105 can substantially isolate the fiber optic leads 194 from the first volume 101. However, it should be understood that an opening can be formed through the dividing wall 118 near the transition wall 105, for example, to allow the fiber optic leads to extend between the volumes 101, 102.

[0054] At least for reference Figure 2-4 , Figure 6-8 and Figure 16-17 , an embodiment of the storage area 140 includes an inner wall 132 that partially separates the storage area 140, and the optical fiber leads can be extended, wrapped, attached or arranged (e.g., in a ring, racetrack, figure eight, etc.) at the inner wall, such as Figure 16-17 For example, the inner wall 132 can extend from the dividing wall 118 at each volume 101, 102 along a height H. A protrusion 142 extends from the inner wall 132, such as parallel to the dividing wall 118, or forms a hook, arc, finger, or other member where the fiber leads are confined or constrained to the storage area 140. In some embodiments, a protrusion 144 extends from the side wall 108, the end wall 106, or both into the volume 101, 102.

[0055] refer to Figure 2-4 In some embodiments, the inner wall 132 forms a channel 136 through which the optical fiber leads can extend and be arranged. For example, a pair or more of the inner walls 132 can form the channel 136 as a walled raceway portion or conduit through which the optical fiber leads can be positioned. In some embodiments, the channel 136 is formed between the inner wall 132 and one or more of the end wall 106 and / or the side wall 108. The protrusion 142 can extend into the channel 136, for example, from one or more of the inner walls 132 forming the channel 136, or between the inner wall 132 and the end wall 106 or the side wall 108.

[0056] In various embodiments, the joint retainer 150 is selectively positioned at one or both volumes 101, 102. Figures 18A-18B , the splice holder 150 can be configured to accommodate fiber ribbon slack (e.g., Fig.18A ) or discrete fiber leads (e.g. Fig.18B). However, it should be understood that other configurations of the engagement member retainer 150 may also be included at the storage area 140. In some embodiments, for example, Figure 2 As shown, the joint retainer 150 is positioned within the storage area 140, such as adjacent the end wall 106. In some embodiments, such as Fig.17 As shown, the adapter retainer 150 is positioned between the storage area 140 and the adapter wall 130 , such as adjacent the transition wall 105 .

[0057] Embodiments of the box 100 facilitate and allow for storage and organization of splice protective sleeves for splices between internal pigtails (e.g., pigtails 194) and external cables 191. Various embodiments of the box 100 may include a splice holder 150. For example, Figures 18A-18B As shown, the splice holder 150 can be configured for use with a single discrete splice or a multi-fiber ribbon splice. Various embodiments of the body 110 allow for the use of interchangeable modular splice holders 150 at which a single discrete splice or a multi-fiber ribbon splice can be received.

[0058] Reference now Figure 4 , 6 and 11-12, a cable entry / exit opening 107 is formed at the side wall 108, the end wall 106, or a transition between the side wall 108 and the end wall 106 (for example, at a corner connecting the side wall 108 and the end wall 106). Embodiments of the cable entry / exit opening 107 can be formed to extend into the first volume 101 or the second volume 102. The opening 107 is configured to receive the cable 191 into the box 100. The cable 191 may include a sheath 192 (for example, a strain relief sheath, a cable bend relief sheath, or other sleeve, covering, or outer material). The inner wall 134 can be aligned with the extension direction of the cable 191 through the cable entry / exit opening 107 ( Fig.11 The inner wall 134 and the side wall 108 can form a cable entry channel 138 through which the cable 191, the jacket 192, or both extend into the box 100. In some embodiments, the fastener 188 is selectively positioned at the cable 191 or the jacket 192, for example, to fasten, bundle, or otherwise retain the cable 191 or a portion thereof at the cable entry channel 138.

[0059] refer to Fig.12 In some embodiments, the fastener mounting location 186 is formed along the extension direction 195 ( Fig.11) extending therefrom. For example, a fastener mounting location 186 can be formed at the channel 138. The fastener mounting location 186 can form a groove at which the cable 191 (or its optical fiber) can be received and positioned. The fastener 188 can be positioned around the cable 191 or a portion thereof at the fastener mounting location 186. In some embodiments, the fastener mounting location 186 forms a jacket strip or lashing point at which the optical fiber from the cable 191 is exposed within the box 100 and is retained thereto. In some embodiments, a lashing point 184 is formed adjacent to the opening 107. For example, the lashing point 184 can form a cable strength member lashing point or other location for attaching a strength member of the cable 191.

[0060] refer to Figure 5 , a perspective view of one embodiment of box 100 is provided. Figure 5 Perspective drawing and Fig.16 The plan view in FIG. 1 shows a first volume 101 having a first storage area 140A. The first volume 101 may be configured to receive an external cable 191 passing through a cable entry / exit opening 107. The first storage area 140A may include an optical fiber 193 ( Fig.16 ) of the inner wall 132 and the protrusions 142, 144. The optical fiber 193 can be routed, wound or otherwise arranged in the storage area 140A formed between the protrusions 142, 144 and the partition wall 118 and between the inner walls 132, or further between one or more side walls 108 or end walls 106. The optical fiber 193 is routed to the splice holder 150, where the splice protective sleeve can be positioned and attached to the box 100. The optical fiber pigtail or splice fiber lead 194 extends from the splice holder 150. A straight-through opening 160 is formed through the partition wall 118 to allow the optical fiber lead 194 to be routed from the first volume 101 to the second volume 102. In some embodiments, the straight-through opening 160 or a portion thereof passes through the side wall 108, adjacent to the portion at the partition wall 118. In some embodiments, such as Figure 3-4 As shown, the through opening 160 or a portion thereof passes through the end wall 106 adjacent to the portion at the dividing wall 118 .

[0061] refer to Figure 6 , a perspective view of one embodiment of box 100 is provided. Figure 6 Perspective drawing and Fig.17 The plan view in FIG. 1 shows a second volume 102 having a second storage area 140B. The second volume 102 may be configured to receive liquid from the first volume 101 (eg, Figure 5 and Fig.16140B). The fiber optic leads 194 can be routed, wrapped, or otherwise arranged between protrusions at the second storage area 140B. The fiber optic leads 194 can terminate on the fiber optic adapter 131 at the adapter wall 130. For example, the fiber optic adapter 131 can extend into the second volume 102 to allow the fiber optic leads 194 to extend from the second volume.

[0062] Figure 5 and Fig.16 Embodiments of the box in may show the first volume 101 as a cable tie or splicing area. Figure 6 and Fig.17 Embodiments of the box 100 in the drawings may illustrate the second volume 102 as a fiber optic pigtail slack storage and termination area. The box 100 may include a closure that fits and is retained to cover the cable entry / exit opening 107 when the cable is passed from the first end of the box 100 (e.g., the front end along the length L). The body 110 may include a fiber pass-through opening 160 positioned at the second end of the box 100 (e.g., the rear end along the length L) or along a side of the box 100 (e.g., along the sidewall 108). The fiber pass-through opening 160 can allow routing between the first volume 101 forming an incoming cable slack storage area and the second volume 102 forming an internal pigtail slack storage area. In various embodiments, the splice retainer 150 forms a splice sleeve organization area that is positioned in the first volume 101 (e.g., as shown in FIG. 1 ). Figure 3-4 ) or the second volume 102 (e.g., as Figure 5-6 shown).

[0063] Figure 7-8 A perspective view of one embodiment of the box 100 is shown. The cover 120 and the body 110 can have a release interface 121, such as a button or a clip. The release interface 121 can be configured to allow a user to push to release the cover 120 from the body 110. For example, the release interface 121 can be located at the adapter base wall 116. In various embodiments, the user can push the release interface 121 and translate the cover 120 along the length L toward the end wall 106 to, for example, remove the pin 124 from the opening 224. The user can translate the cover 120 upward along the height H (i.e., away from the body 110) to remove the cover 120, for example, to remove the latch 122 from the latch interface 123. For example, the latch interface 123 can form a slot extending along the length L to allow the cover 120 and the latch 122 to translate along the length L.

[0064] Reference now Figures 13A-13E and Figures 20A-20FIn various embodiments, an external cable 191, for example, including an external jacket 197, an optical fiber 193, and a strength member 196 (e.g., an aramid or electronic glass strength member), is attached to the body 101 using a collar 210 (e.g., a threaded collar) extending around the cable 191 and locked in place with a fastener 188 (e.g., a nut or other suitable fastener). The assembly method can include inserting the cable 191 through the collar 210. The method includes locking the cable 191 (e.g., including the optical fiber 193 and the strength member 196) in place with the fastener 188. The method can include mating and / or retaining the fastener 188 to the body 110. For example, the fastener 188 can be attached to the body 110 at the channel 138 or the fastener mounting location 186.

[0065] refer to Figure 14-15 , a plan view of an embodiment of box 100 is provided. Figure 14-15 The configuration of the embodiment shown in Figure 3-4 The perspective view of the box 100 shown and described in FIG. Fig.14 An embodiment is shown in which cables 191 extend into box 100 through cable entry / exit opening 107, as described herein. Fig.15 An embodiment is shown where the cable 191 extends through the channel 117 into the box 100. For example, Fig.14 The wiring method of the cable 191 extending through the rear end (e.g., through the opening 107) into the box 100 can be shown. Fig.15 A routing method can be shown where the cable 191 extends through the front end (e.g., through the channel 117) into the box 100. The cable 191 can fit in front of or behind the fastener 188, fastener mounting location 186, or channel 138 to accommodate front or rear entry and exit of the cable 191. In various other embodiments, a cable bend relief sheath (e.g., sheath 192) can be used to help reduce cable bending stress when the cable 191 extends from the box 100.

[0066] It should be understood that "rear" and "front" can be relative to a data rack or other box installation device. Embodiments of the box 100 described herein can provide a device that allows front and rear external cable entry, for example, to facilitate and improve accessibility, maintenance, wiring and splicing of optical fibers and boxes of data racks.

[0067] Reference now Fig.19, a perspective view of one embodiment of a data rack rack 200 is provided. The rack 200 is configured to receive and hold one or more boxes 100. An embodiment of the box 100 can be mounted on the rack 200, which can be mounted on a data rack. Various embodiments of the rack 200 and the data rack can include industry standard configurations (e.g., industry standard width racks such as 19 inches, 21 inches, 23 inches, etc.) or customizable width configurations. The box 100, the rack 200, or both can include a depressible latch 112, which is configured to releasably hold the box 100 on the rack 200. The latch 112 can allow the box 100 to be inserted into the rack 200 or removed from the rack 200 from the front end 211 or the back side 212 of the rack 200 or the data rack.

[0068] In various embodiments, the latch 112 may be removable or positioned at the chassis 200. The latch 112 may be secured to the side wall 108 at a latch attachment 114 on the outside of the side wall 108. When the cover 120 is removed from the body 110, the latch 112 may be secured to the box 100.

[0069] Reference now Figures 20A-20F , an embodiment of a fiber optic fastener assembly 300 and a cable retention method are provided. The fastener assembly 300 includes an embodiment of a ferrule 210 and a fastener 188. In various embodiments, a cable 191 includes an outer jacket 197, an optical fiber 193, and a strength member 196 (e.g., an aramid or electronic glass strength member), such as may be included in an optical fiber cable assembly. The ferrule 210 includes a threaded shank 250 extending from a platform 260 in an axial direction A in one or two directions. The platform 260 may form a head, such as a polygonal (e.g., hexagonal or other polyhedral) head. The threaded shank 250 includes a channel 252 formed therethrough to allow the cable 191 or a portion thereof to extend through the threaded shank 250. The channel 252 may extend between two ends 248, 249 of the ferrule 210 separated in the axial direction A. For example, the ferrule 210 extending around the outer jacket 197 has a threaded shank 250 extending in the same direction as the extension direction of the outer jacket 197 extending in the axial direction A. The first end 248 may form an end through which the cable 191 passes and exits the collar 210. The second end 249 may form an end through which the cable 191 passes and enters the collar 210 and then exits the first end 248.

[0070] Specific reference Fig. 20A, the ferrule 210 includes a groove 254 extending in the axial direction A. The groove 254 can extend from the first end 248, such as from the outlet end of the ferrule 210 toward the platform 260. The groove 254 extends through the threaded shank 250 to allow a portion of the cable 191 to extend from the channel 252 inside the ferrule 210 to the outside of the ferrule 210. In various embodiments, the cable retention method includes extending the strength member 196 through the groove 254 to allow the strength member 196 to separate or detach from the optical fiber 193 exiting the channel 252 at the first end 248.

[0071] refer to Figures 20D-20F , an embodiment of the fastener 188 may form a nut including an internally threaded passage 282 configured to engage with external threads of the threaded shank 250 at the collar 210. Fig.20E As shown, the thread can be in the threaded interface 280 ( Fig.20E ) are matched together, and the threaded interface extends from the platform 260 toward the end (e.g., the first end 248) of the ring 210.

[0072] In various embodiments, the fastener 188 includes one or more radially extending lands 286. The radially extending lands 260, 286 have a flat radially extending interface 284 between the lands 260, 286 to allow the fastener 188 to rest flush or substantially flush against the collar 210 at the lands 260, 286. In certain embodiments, a groove 288 is formed between a pair of lands 286 to allow a protrusion, member, bracket, or other feature at the housing or body to extend into the groove 288 to retain the assembly 300 to the housing or body.

[0073] In other various embodiments, the collar 210 includes a groove 262 formed at the platform 260. The groove 262 extends along the platform 260 at the interface 284 to allow a portion of the cable 191 (eg, the strength member 196) to extend into the groove 262, for example, as Fig.20EAs shown. The cable retention method may include separating the strength member 196 from the optical fiber 193 and extending the strength member 196 along the groove 262. The method may include screwing the fastener 188 onto the threaded shank 250 so that the platforms 260, 286 are positioned flush or substantially flush with each other. The extension of the strength member 196 through the groove 262 can allow the platforms 260, 286 to abut each other flush at the interface 284. The curved edge 285 at the platform 260 can further facilitate the extension of a portion of the cable 191 into the groove 262 while preventing the portion of the cable 191 (e.g., the strength member 196) from being sheared. The method may include separating the strength member 196 from the optical fiber 193 by guiding the strength member 196 through the groove 262 and guiding the optical fiber 193 from the channel 252 at the first end 248. Thus, the groove 262 can allow the optical fiber 193 to pass through the first end 248 and exit the channel 252, and allow the strength member 196 to pass through the groove 262 and exit the channel 252, thereby facilitating the separation, handling, splicing and access of the optical fiber 193 and reducing interference with other portions of the cable 191.

[0074] Various embodiments of the method may include positioning the end 297 of the outer jacket 197 within the channel 252. For example, a user may extend the cable 191 through the channel 252 and out through the end 248, such as FIG. 20A to FIG. 20B A user may cut or otherwise separate the outer jacket 197 to access the optical fibers 193, strength members 196, or other portions of the cable 191 within the outer jacket 197, such as Figures 20C-20D The user positions the fastener 188 around the optical fiber 193, such as through the channel 282, as shown. Fig.20D Strength member 196 extends around fastener 188 to bypass channel 282 through which optical fiber 193 extends. A user can reposition end 297 of outer jacket 197 (e.g., end 297 formed by cutting or otherwise accessing optical fiber 193 within outer jacket 197) at collar 210 into channel 252, for example, as shown. FIG. 20D to FIG. 20E In various embodiments, the strength member 196 is positioned through the groove 262 to allow the platforms 260, 286 to rest flush against each other. In other embodiments, the strength member 196 is positioned through the slot 254 to allow the strength member 196 to extend through the first end 248 while allowing separation from the optical fiber 193 extending from the channel 252 at the first end 248.

[0075] In various embodiments, the sheath 192 can extend from the second end 249 over the threaded shank 250 of the collar 210 to the platform 286 at the fastener 188, such as Fig.11 shown.

[0076] In some embodiments, the slot 254 extends from the platform 260 toward the first end 248 and the second end 249 so that either end 248, 249 can form an outlet of the channel 252. In some embodiments, the groove 262 extends on either or both sides of the platform 260 to correspond to the extension of the slot 254 toward either end 248, 249, thereby allowing either end of the channel 252 to form an outlet.

[0077] Embodiments of assembly 300 provide structures and methods for retaining cables to facilitate splicing and other work at cable 191. Embodiments provided herein can mitigate shearing, crushing, stress buildup, or aging of portions of cable 191. Grooves 262 and slots 254 can facilitate separation of strength member 196 from optical fiber 193 to facilitate work at optical fiber 193. Grooves 262 can specifically facilitate routing, avoiding damage to electronic glass strength members or similar structures. Grooves 254 can specifically facilitate routing, avoiding damage to aramid fiber strength members or similar structures.

[0078] In one exemplary configuration of the box 100, the box 100 can have a storage capacity to store at least 1.5 meters of 250 μm diameter optical fiber for internal optical fiber, external optical fiber, or both. For example, the box 100 can include a first volume 101 and a second volume 102, the total volume of which is about 30 cubic inches (about 492 cubic centimeters) or less, or 35 cubic inches (about 574 cubic centimeters) or less, or 42 cubic inches (about 688 cubic centimeters) or less. It will be appreciated that the length, width, and height of the exemplary box 100 can correspond to the type of rack 200, as described herein. Such a configuration can provide a desired cable length for repair and maintenance, to perform splicing procedures, facilitate use and cable length, allow for re-splicing, etc. Cassette 100 is configured to store optical fibers of desired lengths and diameters within volumes 101 , 102 and further within body 110 and volumes 101 , 102 , allowing multiple cassettes 100 to be inserted into rack 200 , as described herein.

[0079] The embodiments of the fiber optic cassette 100, rack 200, and data rack shown and described herein can improve ease of use for a user (e.g., a splicer technician) by providing separate slack storage volumes 101, 102 and facilitating troubleshooting and tracking of optical fibers when troubleshooting or performing maintenance tasks. The embodiments provided herein allow the cassette 100 to be installed and removed without the need for tools, which can reduce maintenance time and reduce the risk of tool damage to the optical fiber. An embodiment of the cassette 100 includes a fastener 188, such as a locking nut, which is convenient for reducing cable installation time and allowing cables (e.g., cable 191) to be attached to the cassette 100 without the need for screws, inserts (e.g., molded inserts), or other threaded mechanical fasteners. The fastener 188 (e.g., a locking nut) can save space inside the body, facilitating handling and performing splicing or maintenance tasks.

[0080] Embodiments of the fiber optic cabinet 100, rack 200, and data rack can allow access from the front or rear, for example, to allow maintenance of the data rack when positioned against a wall or other obstruction. Embodiments provided herein facilitate the use of discrete or ribbon splices without changing the configuration (i.e., discrete or ribbon splices can be used on the same module), thereby providing multiple configuration options on the same module.

[0081] Further aspects of the present invention are provided by one or more of the following embodiments.

[0082] 1. A fiber optic box, the fiber optic box defining a mutually orthogonal length, width and height, the fiber optic box comprising: a body, the body comprising a pair of side walls extending along the length and an end wall extending along the width between the pair of side walls, the side walls and the end walls both extending along the height, wherein an adapter wall is positioned between the side walls and positioned away from the end wall along the length, wherein a partition wall extends between the side walls, the end walls and the adapter wall, wherein the partition wall is positioned along the height between a top lip and a bottom lip of the side wall, wherein between the side walls, the end walls and the adapter wall, a first lip of the partition wall A first volume is formed at a side of the partition wall, and wherein a second volume is formed between the side wall, the end wall and the adapter wall and at a second side of the partition wall, wherein a fiber storage area is positioned at the first volume and the second volume, and wherein a splice holder is positioned at the first volume or the second volume, wherein a cable opening is formed at or between the end wall and at least one side wall, the cable opening being configured to receive an external cable into the first volume, and wherein a straight-through opening is formed through the partition wall to allow optical fiber to be routed out from the first volume to the second volume.

[0083] 2. The fiber optic cabinet according to any one or more of the clauses herein, wherein the adapter wall comprises a plurality of adapters extending into the second volume.

[0084] 3. The fiber optic cabinet according to any one or more clauses herein, wherein an adapter base wall extends widthwise between said side walls and partially lengthwise, said adapter base wall being positioned at or proximate to said adapter wall along the length.

[0085] 4. A fiber optic cabinet according to any one or more clauses herein, wherein a cable entry channel is formed at the adapter base wall, the cable entry channel extending along the length, the cable entry channel being configured to allow external cables to enter the first volume.

[0086] 5. The fiber optic cabinet according to any one or more clauses herein, wherein the body comprises a fastener mounting location extending through the cable opening along an extending direction of the external cable.

[0087] 6. The fiber optic cabinet according to any one or more clauses herein, wherein the fastener mounting location forms a groove configured to receive an external cable.

[0088] 7. A fiber optic cabinet according to any one or more of the clauses herein, wherein the fastener mounting location is configured to receive a collar extending around an external cable.

[0089] 8. A fiber optic cabinet according to any one or more of the clauses herein, wherein the fastener mounting location is configured to receive a fastener extending around an external cable.

[0090] 9. The fiber optic cabinet according to any one or more clauses herein, wherein a tying point is formed beside the cable opening, the tying point being configured to attach a strength member of an external cable to the body.

[0091] 10. The fiber optic cabinet according to any one or more of the clauses herein, wherein the storage area comprises a plurality of protrusions extending at least partially parallel to the dividing wall.

[0092] 11. A fiber optic cabinet according to any one or more of the clauses herein, wherein the storage area comprises an inner wall extending in height from the dividing wall, wherein the protrusion extends from the inner wall at least partially parallel to the dividing wall.

[0093] 12. The fiber optic cabinet according to any one or more clauses herein, wherein the through opening is positioned beside the end wall or the side wall.

[0094] 13. A fiber optic cabinet according to any one or more clauses herein, comprising a removable cover, said cover forming a base wall and a top wall on said body.

[0095] 14. The fiber optic cabinet according to any one or more clauses herein, wherein the cover comprises a latch configured to be selectively attached and released at the side wall at a latch interface.

[0096] 15. The fiber optic cabinet according to any one or more of the clauses herein, wherein the cover comprises a pin configured to extend into an opening at the adapter base wall.

[0097] 16. A fiber optic cabinet according to any one or more of the clauses herein, wherein the cover comprises a face extending along a length and a width, wherein the cover side walls and the cover end walls extend from the face along a height.

[0098] 17. A fiber optic cabinet according to any one or more of the clauses herein, wherein the face comprises a transparent material.

[0099] 18. The fiber optic cabinet according to any one or more of the clauses herein, wherein the side wall comprises a latch attachment located at an outer side of the side wall.

[0100] 19. The fiber optic cabinet according to any one or more of the clauses herein, wherein the partition wall comprises a transition wall extending in height, the transition wall being positioned in length between the adapter wall and the storage area.

[0101] 20. A fiber optic cabinet according to any one or more of the clauses herein, wherein the body is a unitary, one-piece component.

[0102] 21. A fiber optic box, the fiber optic box defining a mutually orthogonal length, width, and height, the fiber optic box comprising: a body, the body comprising a pair of side walls extending along the length and an end wall extending along the width between the pair of side walls, the side walls and the end walls both extending along the height, wherein an adapter wall is positioned between the side walls and positioned away from the end walls along the length, wherein a partition wall extends between the side walls, the end walls, and the adapter wall, wherein the partition wall is positioned along the height between a top lip and a bottom lip of the side wall, wherein a first volume is formed between the side walls, the end wall, and the adapter wall at a first side of the partition wall, and wherein the side walls, the end wall, and the adapter wall are provided with a first volume. A second volume is formed between the side walls and at a second side of the dividing wall, wherein an optical fiber storage area is positioned at the first volume and the second volume, and wherein a splice holder is positioned at the first volume or the second volume, wherein an adapter base wall extends along a width between the side walls and partially along a length, the adapter base wall is positioned at or near the adapter wall along the length, and wherein a cable entry channel is formed at the adapter base wall, the cable entry channel extending along the length, the cable entry channel being configured to allow external cables to enter the first volume, and wherein a straight opening is formed through the dividing wall to allow optical fiber to exit from the first volume to the second volume.

[0103] 22. A fiber optic cabinet according to any one or more clauses herein, wherein a cable opening is formed at or between the end wall and at least one side wall, the cable opening being configured to receive an external cable into the first volume.

[0104] This written description uses examples to disclose the invention, including the best mode, and also enables those skilled in the art to practice the invention, including making and using any device or system and performing any combined method. The patent scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. If such other examples include structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements that do not differ substantially from the literal language of the claims, it is intended that these other examples be included within the scope of the claims.

Claims

1. A fiber optic box, the fiber optic box defining mutually orthogonal length, width and height, the fiber optic box comprising: a main body, the main body comprising a pair of side walls extending along the length and an end wall extending along the width between the pair of side walls, the side walls and the end walls both extending along the height, wherein an adapter wall is positioned between the side walls and longitudinally away from the end wall, wherein a dividing wall extends between the side walls, the end wall and the adapter wall, wherein the divider wall is positioned in height between a top lip and a bottom lip of the side wall, wherein a first volume is formed at a first side of the divider wall between the side wall, the end wall and the adapter wall, and wherein a second volume is formed at a second side of the divider wall between the side wall, the end wall and the adapter wall, wherein a fiber storage area is positioned at the first volume and the second volume, and wherein a splice holder is positioned at the first volume or the second volume, wherein a cable opening is formed at or between the end wall and at least one side wall, the cable opening being configured to receive an external cable into the first volume, and A through opening is formed through the partition wall to allow optical fiber to pass from the first volume to the second volume.

2. The fiber optic cabinet of claim 1, wherein the adapter wall comprises a plurality of adapters extending into the second volume.

3. The fiber optic cabinet of claim 1, wherein an adapter base wall extends widthwise between the side walls and partially lengthwise, the adapter base wall being positioned at or proximate to the adapter wall along the length.

4. The fiber optic cassette of claim 3, wherein a cable entry channel is formed at the adapter base wall, the cable entry channel extending along the length, the cable entry channel being configured to allow external cables to enter the first volume.

5. The fiber optic cabinet of claim 1, wherein the body includes a fastener mounting location extending through the cable opening in a direction in which an external cable extends.

6. The fiber optic cabinet of claim 5, wherein the fastener mounting location forms a groove configured to receive an external cable.

7. The fiber optic cabinet of claim 5, wherein the fastener mounting location is configured to receive a collar extending around an external cable.

8. The fiber optic cabinet of claim 5, wherein the fastener mounting location is configured to receive a fastener that extends around an external cable.

9. The fiber optic cabinet of claim 1, wherein a tying point is formed beside the cable opening, the tying point being configured to attach a strength member of an external cable to the body.

10. The fiber optic cabinet of claim 1, wherein the storage area comprises a plurality of protrusions extending at least partially parallel to the dividing wall.

11. The fiber optic cabinet of claim 1 , wherein the storage area includes an inner wall extending in height from the dividing wall, wherein the protrusion extends from the inner wall at least partially parallel to the dividing wall.

12. The fiber optic cabinet of claim 1, wherein the pass-through opening is positioned beside the end wall or the side wall.

13. The fiber optic cabinet of claim 1, comprising: A removable cover is formed on the body with the base wall and the top wall.

14. The fiber optic cabinet of claim 13, wherein the cover includes a latch configured to be selectively attached and released at the side wall at a latch interface.

15. The fiber optic cabinet of claim 13, wherein the cover includes a face extending along a length and a width, wherein the cover side walls and the cover end walls extend from the face along a height.

16. The fiber optic cabinet of claim 1, wherein the side wall includes a latch attachment located at an exterior side of the side wall.

17. The fiber optic cabinet of claim 1, wherein the divider wall comprises a transition wall extending in height, the transition wall being positioned in length between the adapter wall and the storage area.

18. The fiber optic cabinet of claim 1, wherein the body is a unitary, one-piece component.

19. A fiber optic box, the fiber optic box defining mutually orthogonal length, width and height, the fiber optic box comprising: a main body, the main body comprising a pair of side walls extending along the length and an end wall extending along the width between the pair of side walls, the side walls and the end walls both extending along the height, wherein an adapter wall is positioned between the side walls and longitudinally away from the end wall, wherein a dividing wall extends between the side walls, the end wall and the adapter wall, wherein the divider wall is positioned in height between a top lip and a bottom lip of the side wall, wherein a first volume is formed at a first side of the divider wall between the side wall, the end wall and the adapter wall, and wherein a second volume is formed at a second side of the divider wall between the side wall, the end wall and the adapter wall, wherein a fiber storage area is positioned at the first volume and the second volume, and wherein a splice holder is positioned at the first volume or the second volume, wherein an adapter base wall extends along a width between the side walls and partially along a length, the adapter base wall being positioned at or near the adapter wall along the length, and wherein a cable entry channel is formed at the adapter base wall, the cable entry channel extending along the length, the cable entry channel being configured to allow an external cable to enter the first volume, and A through opening is formed through the partition wall to allow optical fiber to pass from the first volume to the second volume.

20. The fiber optic cabinet of claim 19, wherein a cable opening is formed at or between the end wall and at least one side wall, the cable opening being configured to receive an external cable into the first volume.

Images