1. Field of the Disclosure
The disclosure relates generally to optical fiber adaptors, and more particularly to gang optical fiber adaptors or adaptor banks which may be used in fiber optic distribution frames located in structures such as, for example, central offices or fiber optic local convergence points like outdoor cabinets.
2. Technical Background
In fiber optic network apparatus including convergence points and distribution frames there is a constant demand for apparatus permitting high-density distribution with very high fiber termination counts in a small, confined volume. To accomplish the high-density distribution with high fiber termination counts requires efficient utilization of space with due regard to constraints put on fiber optic cables such as minimum bending radii. Optical fiber adaptors or adaptor banks may be used to accomplish the high fiber termination counts in fiber optic distribution frames located in structures such as, for example, central offices or fiber optic local convergence points like outdoor cabinets.
One embodiment of the disclosure relates to an adaptor that comprises a body that includes a pair of opposed short sides having a length (l) and a pair of opposed long sides having a length (L). The pair of opposed short sides and the pair of opposed long sides define an axial cavity of the adaptor. A portion of a ferrule alignment structure is molded within the axial cavity and configured to receive a remaining portion of the ferrule alignment structure. The adaptor is molded as a single, integral assembly
An additional embodiment of the disclosure relates to a gang adaptor assembly that comprises a body including a front end, a rear end, a top wall, a bottom wall, a first side wall, and a second side wall. The body also has a plurality of interior side walls disposed between and parallel to the first side wall and the second side wall. The top wall, the bottom wall, the first side wall, the second side wall, and the plurality of interior side walls define a plurality of axial cavities extending from the front end to the rear end of the body, and each of the plurality of axial cavities corresponds to one of a plurality of adaptors. Each of the plurality of adaptors shares at least one of the plurality of interior side walls with an adjacent adaptor. At least a portion of a ferrule alignment structure is molded within each of the plurality of adaptors. The at least a portion of the ferrule alignment structure comprises at least a ferrule holder. The gang adaptor assembly also comprises a first mounting feature that is molded into a face of the first side wall external to the plurality of adaptors, and a second mounting feature molded into a face of the second side wall external to the plurality of adaptors.
An additional embodiment of the disclosure relates to a method of manufacturing a gang adaptor assembly that comprises molding the gang adaptor assembly as a single, integral piece. The gang adaptor assembly comprises a front end, a rear end, a top wall, a bottom wall, a first side wall, a second side wall, and a plurality of interior side walls disposed between and parallel to the first side wall and the second side wall. The top wall, the bottom wall, the first side wall, the second side wall, and the plurality of interior side walls define a plurality of axial cavities that extend from the front end to the rear end of the body, and each of the plurality of axial cavities correspond to one of a plurality of adaptors. A portion of a ferrule alignment structure is molded within each of the plurality of adaptors. Additionally, a set of mounting features extends from the first and second side walls to connect the gang adaptor assembly to a cassette. The method also includes inserting a remaining portion of the ferrule alignment structure into each of the plurality of adaptors. The remaining portion of the ferrule alignment structure is configured to snap into each of the plurality of adaptors.
Additional features and advantages will be set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from the description or recognized by practicing the embodiments as described in the written description and claims hereof, as well as the appended drawings.
It is to be understood that both the foregoing general description and the following detailed description are merely illustrative, and are intended to provide an overview or framework to understand the nature and character of the claims.
The accompanying drawings are included to provide a further understanding, and are incorporated in and constitute a part of this specification. The drawings illustrate one or more embodiment(s), and together with the description serve to explain principles and operation of the various embodiments.
Various embodiments will be further clarified by the following examples.
Referring to
Each adaptor 12a-12x is configured to receive an individual optical fiber by conventional methods. Adaptors 12a-12x may receive any conventional optical fiber connector for connecting to optical fibers such as, for example, SC connectors, LC connectors, ST connectors, FC connectors, E2000 connectors, and any other optical fiber connectors. As shown in this example, adaptors 12a-12x are configured to receive SC connectors. However, in the embodiment shown, the adaptors 12a-12x are aligned so that the long sides of adjacent adaptors interface. In this manner, more adaptors can be ganged in a certain length such that gang adaptor assembly 10 permits 24 adaptors to be ganged together in one optical fiber cassette 500 as shown in
In this regard, adaptors 12a-12x each have a body 32, wherein body 32 includes a first short side 34a, a second short side 34b opposite first short side 34a, a first long side 36a, a second long side 36b opposite first long side 36a, and an axial cavity 38 disposed through body 32 between the four walls. In various embodiments, the first short side 34a for each of the adaptors 12a-12x is connected as top wall 18 from which each of the long sides (including first long side 36a and second long side 36b) extend. Similarly, the second short side 34b for each of the adaptors 12a-12x is connected as bottom wall 20 from which each of the long sides extend. Thus, the long sides (e.g., first side wall 26, second side wall 28, and plurality of interior side walls 30) interface to divide the top and bottom walls into the first and second short sides 34a and 34b to define the body 32 for each of the adaptors 12a-12x. Axial cavity 38 is configured and operable to receive and connect to an optical fiber inserted therein. First and second short sides 34a and 34b, respectively, have a length (l), and first and second long sides 36a and 36b, respectively, have a length (L). Length (L) is greater than length (l).
Adaptors 12a-12x are disposed side-by-side along longitudinal axis L-L′ to form gang adaptor assembly 10. As shown, the adaptors 12a-12x are positioned such that the adaptor's long sides are adjacent to each other or connected to each other and are transverse to longitudinal axis L-L′. In this configuration, first and second short sides 34a and 34b, respectively, are parallel to longitudinal axis L-L′. For example, a second long side 36b of first adaptor 12a is positioned adjacent to first long side 36a of second adaptor 12b. This configuration permits a dense adaptor configuration on the optical fiber cassette 500 such as shown, for example, in
As shown in
The mounting features illustrated in
Referring to
Also, gang adaptor assembly 10 may include a first stop 56a or a second stop 56b disposed along rear end 24 at respective first and second ends 14 and 16. First stop 56a or second stop 56b may be configured to prevent gang adaptor assembly 10 from rotating or tilting beyond a specific angular rotation, angle a, about longitudinal axis L-L′. In this example, first stop 56a and second stop 56b each comprise a stop oriented at an angle α. First and second stop 56a and 56b are configured to prevent gang adaptor assembly 10 from rotating or tilting past angle a (not shown). Angle a is determined based upon the desired maximum angle of rotation or tilt of gang adaptor assembly 10 about longitudinal axis L-L′.
In certain examples, angle a is about 10°, about 15°, about 20°, about 25°, about 30°, about 35°, about 40°, about 45°, about 50°, about 55°, about 60°, about 65°, about 70°, about 75°, about 80°, about 85°, or about 90°. In such embodiment, gang adaptor assembly 10 may rotate or tilt between a starting position angular orientation (e.g.,0°) and angle α. In other embodiments gang adaptor assembly 10 may be configured to rotate or tilt 360° about axis L-L′.
As shown in
Optical fiber cassette 500 includes a framework 58 operable for receiving, routing, managing and storing optical fibers, optical fiber connections and optical components. Optical fiber cassette 500 is operable to slide into and out of a fiber optic distribution frames or cabinets. Framework 58 includes a first head slot 60a disposed within framework 58 at a first framework side 62 of framework 58 to receive head 40a and stem (not sown) located on first end 14 of gang adaptor assembly 10. Additionally, framework 58 includes a second head slot 60b disposed within framework 58 at a second framework side 64 of framework 58 to receive head 40b and stem 42 located on second end 16 of gang adaptor assembly 10. The above described connection points between the gang adaptor assembly 10 and optical fiber cassette 500 permit gang adaptor assembly 10 to rotate or tilt in a counter-clockwise direction or a clockwise direction about an axis L-L′ such as, for example, those shown and described in copending, commonly owned U.S. Provisional Patent Application Ser. No. 61/825,779, filed May 21, 2013, which is hereby incorporated by reference in its entirety.
In the example shown in
Each adaptor 12a-12x further includes a ferrule alignment structure 66, shown in
In various embodiments, at least a portion of the ferrule alignment structure 66 is molded within the axial cavity 38 as an integral piece of each of the adaptors 12a-12x.
When a portion of the ferrule alignment structure 66 is molded within the axial cavity 38, the axial cavity 38 is further molded such that it is configured to receive the remaining portion 78 of the ferrule alignment structure 66, including the second ferrule holder 72. The axial cavity 38, and the portion of the ferrule alignment structure 66 molded therein, may be configured to receive the remaining portion 78 of the ferrule alignment structure 66 in a snap-fit connection. When the remaining portion 78 of the ferrule alignment structure 66 is inserted into the axial cavity 38, tabs 80a and 80b on the exterior sides between flexible arms 68a and 68c and 68b and 68d, respectively, are pushed inwardly by the first short side 34a and second short side 34b of body 32, permitting the remaining portion 78 of the ferrule alignment structure 66 to slide into the axial cavity 38. Once the tabs 80a and 80b reach the channels 82a and 82b disposed within the first short side 34a and the second short side 34b respectively, the tabs 80a and 80b move, flex, or snap back outwardly into the channels 82a and 82b. When tabs 80a and 80b are within respective channels 82a and 82b, the remaining portion 78 of the ferrule alignment structure 66 is locked into its position within the axial cavity 38. As such, the remaining portion 78 is connected to, locked into, or “snapped” into axial cavity 38.
Unless otherwise expressly stated, it is in no way intended that any method set forth herein be construed as requiring that its steps be performed in a specific order. Accordingly, where a method claim does not actually recite an order to be followed by its steps or it is not otherwise specifically stated in the claims or descriptions that the steps are to be limited to a specific order, it is no way intended that any particular order be inferred.
Many modifications and other embodiments set forth herein will come to mind to one skilled in the art to which the embodiments pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the description and claims are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
This application claims the benefit of priority under 35 U.S.C. §119 of U.S. Provisional Application No. 61/872,108 filed on Aug. 30, 2013, the content of which is relied upon and incorporated herein by reference it its entirety.
Number | Date | Country | |
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61872108 | Aug 2013 | US |