CN217133439U - Optical fiber junction box and optical fiber case comprising same - Google Patents

Abstract

An optical fiber junction box and an optical fiber case comprising the same, which comprises a junction box cover body and a panel connected to the front end of the junction box cover body. Wherein, this optical fiber terminal box still includes: at least one input adapter mounted on the panel and configured to receive an input fiber from a direction of a front end of the fiber optic junction box; at least one output adapter mounted on the panel and configured to receive an output fiber from a direction of a front end of the fiber optic junction box; and a fiber sorting device housed in the junction box cover body for connecting an input fiber connected to the input adapter with an output fiber connected to the output adapter. The optical fiber junction box allows operations such as addition, modification, and removal of cables to be completed in front of the optical fiber junction box without operations in the rear of the optical fiber junction box, thereby simplifying operations and reducing the need for installation space.

Description

Optical fiber junction box and optical fiber case comprising same

Technical Field

The utility model relates to an electrical equipment field, in particular to an optic fibre terminal box for connecting optic fibre still relates to the fiber optic casing including this optic fibre connection box.

Background

In applications where optical fibers are used for communication and signal transmission, optical fiber junction boxes are used to manage and connect cables such as optical fibers.

A conventional fiber optic junction box includes input ports and output ports for inputting and outputting signals, wherein signals are output from a side of the fiber optic junction box corresponding to the front of a cabinet or an equipment rack, for example, a plurality of LC or SC fiber optic connectors are provided, and signals are input from a side corresponding to the rear of the cabinet or the equipment rack, for example, a plurality of MPO connectors (multi-fiber push-pull connectors) are provided.

In some applications, such as in the case of smaller size cabinets, the space available for the operator to operate is small, and in particular the space available for the rear door of the cabinet to open is small, which can make it difficult for the operator to add, modify, etc. wiring harnesses.

Furthermore, even with sufficient space, in certain simple applications, it is desirable for the operator to be able to perform cable addition, replacement and removal operations without having to open the rear door to complete all cable addition, replacement and removal operations at the front of the cabinet.

Accordingly, there is a need for further improvements in the construction of fiber optic junction boxes that overcome the above-mentioned problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The present invention is made in order to solve the above technical problems of the prior art. An object of the present invention is to provide an optical fiber junction box having an improved structure, which allows an operator to easily perform operations of adding, replacing, and removing cables in front of the optical fiber junction box.

The utility model discloses an optical fiber junction box is used for connecting optic fibre, and it includes the terminal box lid and connects the panel on terminal box lid front end. Wherein, this optical fiber terminal box still includes: at least one input adapter mounted on the panel and configured to receive an input fiber from a direction of a front end of the fiber optic junction box; at least one output adapter mounted on the panel and configured to receive an output fiber from a direction of a front end of the fiber optic junction box; and a fiber sorting device housed in the junction box cover body for connecting an input fiber connected to the input adapter with an output fiber connected to the output adapter.

In the structure of the optical fiber junction box, the input adapter and the output adapter are arranged on the panel positioned at the front, so that an operator can complete operations such as adding, changing and removing cables at the front of the optical fiber junction box without performing operations at the rear of the optical fiber junction box. Accordingly, the work of the operator can be simplified, and the space requirement of the equipment such as the cabinet and the cabinet for installing the optical fiber junction box is low.

In one example of the fiber optic junction box, the input adapters are LC adapters and/or the output adapters are MPO adapters.

Preferably, two MPO adapters are mounted on the panel, the MPO adapters being 12-hole MPO adapters, each corresponding to a set of 8-hole LC adapters. Therefore, two groups of 8-fiber MPO-LC connection structures are arranged on the fiber junction box.

The utility model also provides an optical fiber casing including above-mentioned fiber connection box, this optical fiber casing include outer shell portion and can relative slip ground with outer shell portion matched with pull portion to this fiber connection box is installed in pull portion.

Preferably, the housing portion includes a top plate and housing side plates located at left and right sides of the top plate, and at least one reinforcing rib is provided on a connecting edge portion between the top plate and each of the housing side plates.

It is further preferred that the reinforcing bead is formed in the form of a depression that is concave from the outside inward.

The reinforcing rib structure can improve the overall structural strength of the optical fiber housing, and enables the friction force between the shell part and the drawing part to be small, thereby being convenient for adjusting the position of the drawing part relative to the shell part.

Furthermore, a folding piece is arranged at the lower edge of the side plate of the shell, and when the drawing part is matched with the shell part, the folding piece supports the drawing part, and at least one pit is formed on the folding piece.

The arrangement of the recess reduces the contact area between the flap and the drawer, and thus reduces the friction between them, so that the drawer can be easily positionally adjusted relative to the housing.

Preferably, a flap is provided on the lower edge of the top panel, and at least one recess is also formed in the flap.

In one specific configuration, a terminal block mounting post is provided on the draw-out portion, and the fiber optic terminal block is secured to the terminal block mounting post.

Further, an operation hole is provided near the front end of the drawer portion, and the operation hole is adjacent to the terminal block mounting post. The arrangement of the operation hole can facilitate the maintenance of the optical fiber junction box installed in the optical fiber casing by operators.

Drawings

The embodiments of the invention will become more apparent from the structure illustrated in the accompanying drawings, in which:

fig. 1 shows a perspective view of the optical fiber junction box of the present invention.

FIG. 2 illustrates an exploded perspective view of the fiber optic junction box of FIG. 1, with various components of the fiber optic junction box more clearly shown.

Fig. 3 is an exploded perspective view of a fiber optic enclosure for mounting a fiber optic junction box according to the present invention.

Fig. 4 illustrates an assembled perspective view of the fiber optic enclosure of fig. 3.

Fig. 5 illustrates a top perspective view of a housing portion of the fiber optic enclosure of fig. 3.

Fig. 6 shows a perspective view of the shell part of fig. 5 turned over.

FIG. 7 illustrates a top perspective view of the pull out portion of the fiber optic enclosure of FIG. 3.

FIG. 8 is another exploded perspective view of the fiber optic enclosure of FIG. 3 showing the fiber optic splice cassette of FIG. 1 mounted on the drawer.

(symbol description)

10 optical fiber junction box

20 junction box cover body

21 mounting hole

22 fastener

30 panel

31 recess

32LC adapter

33MPO adapter

34 connecting piece

40 optical fiber casing

50 outer shell part

51 side plate of outer shell

52 screw

53 first tab

54 Top plate

55 reinforcing rib

56 rear plate of casing

57 fold piece

58 pit

60 drawing part

61 draw side plate

62 guide rail

63 second tab

64 convex column

65 lock hole

66 operation hole

67 terminal box erection column

68 strap fixing part

70 mounting rack

71 first flange

80 front door

81 draw pin

90 fiber clamp

91 second flange

Detailed Description

In order to facilitate understanding of the present invention, the following detailed description of the optical fiber junction box and the optical fiber enclosure including the same will be described with reference to the accompanying drawings. It is understood that only the preferred embodiment of the present invention has been shown in the drawings and should not be considered as limiting the scope of the invention. Various obvious modifications, variations and equivalents of the present invention can be made by those skilled in the art on the basis of the embodiments shown in the drawings, and the technical features in the different embodiments described below can be arbitrarily combined with each other without contradiction, and these are within the scope of the present invention.

In the following detailed description of the present invention, terms used to denote direction and orientation, such as "upper", "lower", "left", "right", "front", "rear", and the like, are used with reference to the general orientation of structures shown in the figures during use. It will be appreciated that the orientation of the structure may also vary depending on the particular application.

Fig. 1 shows a perspective view of the assembled optical fiber junction box 10 of the present invention, and fig. 2 shows an exploded view of the optical fiber junction box 10.

The optical fiber junction box 10 includes a junction box cover 20, and an optical fiber alignment device (fanout) for interconnecting input and output optical fibers connected to the optical fiber junction box 10 to perform input and output functions is accommodated in the junction box cover 20.

A panel 30 is connected to the front end of the junction box cover 20. In the specific structure seen in fig. 2, mounting holes 21 are provided on the left and right sides of the front end of the junction box cover 20, respectively, and the mounting holes 21 can be matched with corresponding structures on a fiber optic cabinet 40, which will be described later, to mount the fiber optic junction box 10 into the fiber optic cabinet 40, which will be described in detail later. Correspondingly, recesses 31 are provided on the respective left and right sides of the panel 30 to accommodate connectors 34 (e.g., screws). Snaps 22 are also provided on upper and lower sides of the front end of the terminal block cover 20 for fixedly mounting the panel 30 to the front end of the terminal block cover 20. In addition to the structure shown in the figures, the panel 30 may be attached to the junction box cover 20 by any means known in the art. For example, hooks may be provided on one of the terminal box cover 20 and the face plate 30, grooves of matching shape may be provided in corresponding locations on the other of the terminal box cover 20 and the face plate 30, and so on.

An input port and an output port are provided on the panel 30. Specifically, as can be seen from fig. 1 and 2, a plurality of LC adapters 32 are mounted on the panel 30 as input ports, and a plurality of MPO adapters 33 are also provided on the panel 30 as output ports.

In the exemplary configuration shown in the drawings, two 12-hole MPO adapters 33 are mounted on the panel 30, and further, during the wiring process, each MPO adapter 33 corresponds to one set of 8-hole LC adapters 32, respectively, and 8 of the 12-holes of each MPO adapter 33 are used in the configuration. Thus, two sets of 8 fiber MPO-LC link structures are included in this configuration.

The LC adapters 32 and the MPO adapters 33 are connected together by the above-mentioned fiber alignment device (not shown) housed in the junction box cover 20. The optical fiber arrangement device is a structure known in the prior art, and a description thereof will not be repeated.

In the configuration shown in the drawing, a set of 8-hole LC adapters 32 are mounted on the left and right sides of two MPO adapters 33, respectively. It will be appreciated that the configuration shown in the figures is merely exemplary and that the number of LC adapters 32 and MPO adapters 33 mounted on the panel 30 and their relative positions may be set according to actual needs and the specific configuration of the fiber sorting device housed in the junction box cover 20 may be selected accordingly.

In addition, in addition to the LC adapters 32 and MPO adapters 33 mentioned above, other existing port types may be used as input and output ports, such as SC adapters instead of LC adapters 32, and so on.

Fig. 3-7 illustrate a configuration of a fiber optic enclosure 40 that may be used to mount the fiber optic junction box 10 described above.

Fig. 3 shows an exploded perspective view of the overall structure of the fiber optic enclosure 40, and fig. 4 shows a perspective view of the assembled fiber optic enclosure 40.

It can be seen that the fiber optic housing 40 generally includes an upper housing portion 50 and a lower drawer portion 60, wherein the drawer portion 60 is preferably movable in a fore-and-aft direction relative to the housing portion 50, i.e., the position of the drawer portion 60 relative to the housing portion 50 can be adjusted.

The housing part 50 and the drawer part 60 are mounted together by a mounting bracket 70. In the exemplary structure shown in the drawings, screw holes or the like are provided on the case side plates 51 (left and right sides) of the case portion 50 and the mount bracket 70, and guide rails 62 extending in the front-rear direction are provided on the drawing side plates 61 (left and right sides) of the drawing portion 60, the guide rails 62 being more specifically in the form of slots. At least one screw 52 can be screwed into threaded holes in the housing side plates 51 and the mounting bracket 70 and can extend into the guide rail 62 of the extension 60. Such a connection structure allows an operator to adjust the position of the drawer 60 in the front-rear direction with respect to the housing part 50.

In addition, as shown in the figure, a first protruding piece 53 is further provided at the front end of the housing side plate 51, a first flange 71 is provided at the front end of the mounting bracket 70, screw holes are provided at corresponding positions on the first protruding piece 53 and the first flange 71, and a fastener such as a screw can be passed through the screw holes on the first protruding piece 53 and the first flange 71, thereby further assisting in fixing the mounting bracket 70 with the housing 50. In the preferred structure shown in the drawings, the above-described connecting structure including the mounting bracket 70 is provided on each of the right and left sides of the optical fiber housing 40.

The fiber optic enclosure 40 also includes a front door 80, the front door 80 being hinged, for example, at the front end of the drawer 60 such that the front door 80 can pivot relative to the drawer 60 to close and open the front end of the fiber optic enclosure 40. A pull pin 81 is provided on the front door 80, and the pull pin 81 is switchable between a retracted position (fig. 3) toward the inside of the fiber optic cabinet 40 and a pulled position (fig. 4) pulled out toward the outside of the fiber optic cabinet 40. When the front door 80 is in the closed position, the pull pin 81 is engaged with the lock hole 65 provided on the boss 64 at the front end of the drawer 60 to lock the front door 80 in the closed position. When the front door 80 is to be opened, the operator may pull the pull pin 81 outward to the extended position to disengage the pull pin 81 from the lock hole 65, thereby allowing the front door 80 to pivot to the open position.

Fiber clamps 90 are further provided at both sides of the fiber housing 40, respectively, and the fiber clamps 90 may be attached to the drawing part 60, for example, and particularly, mounted at the front end of the drawing part 60 for fiber management.

Fig. 5 and 6 show different perspective views of the housing part 50, wherein fig. 5 is a perspective view seen from the top of the housing part 50, and fig. 6 is a perspective view seen after turning the housing part 50 of fig. 5 upside down.

As can be seen from fig. 5, at least one reinforcing rib 55, for example, three reinforcing ribs 55 on the left side and three reinforcing ribs 55 on the right side shown in fig. 5, for a total of six reinforcing ribs 55, is provided on the connecting edge portion between the case side plate 51 and the top plate 54 of the case portion 50. The reinforcing rib 55 is provided by forming a downward recessed portion in the connecting edge portion, for example. The reinforcing ribs 55 may be formed, for example, by pressing inward on the outside of the housing portion 50, and may be configured to be concave when viewed from the outside (fig. 5) and convex when viewed from the inside (fig. 6).

The provision of the reinforcing ribs 55 improves the structural strength of the outer shell portion 50. In addition, when the housing part 50 is mounted with the drawn part 60, the upper edges of the drawn side plates 61 of the drawn part 60 will be contacted by the reinforcing ribs 55, and when the position of the drawn part 60 is adjusted in the front-rear direction with respect to the housing part 50, the frictional force between the housing part 50 and the drawn part 60 will be made small, thereby facilitating the position adjustment of the drawn part 60.

Fig. 6 shows a perspective view of the housing part 50 turned upside down so that its bottom is directed upward. It can be seen that flaps 57 are provided on the lower edges of the left and right case side plates 51 of the case portion 50, respectively. The flap 57 can serve to hold the drawer 60. At least one dimple 58 is formed in each flap 57, for example, three dimples 58 are shown in each flap 57. The provision of the recess 58 reduces the contact area between the flap 57 and the drawer 60, thereby reducing friction between the outer shell 50 and the drawer 60 and facilitating adjustment of the position of the drawer 60.

Preferably, the housing portion 50 further includes a housing back plate 56, a flap 57 is also provided on a lower edge of the housing back plate 56, and at least one recess 58, such as the three recesses 58 shown in the figures, is also provided on the flap 57 of the housing back plate 56.

Fig. 7 shows a top perspective view of the drawer 60. Wherein the drawing part 60 further includes an operation hole 66 provided near the front end of the drawing part 60. In the exemplary configuration shown in the figures, three rectangular access holes 66 are included and are also provided adjacent to connector mounting posts 67 to facilitate access to fiber optic connector 10 mounted in housing portion 50 by an operator.

In addition, as can be seen in fig. 7, several strap retainers 68 are provided on the drawer 60 for positioning the cable straps for cable management. In the exemplary configuration shown in the figures, the strap retention portion 68 is in the form of a bridge.

Fig. 8 is a schematic view of the fiber optic junction box 10 mounted on the fiber optic housing 40, wherein the fiber optic housing 40 is exploded to more clearly show the mounting position of the fiber optic junction box 10 in the fiber optic housing 40, wherein it can be seen that mounting holes are provided on the box mounting posts 67 of the drawer 60 corresponding to the panel mounting holes 21 on the box cover 20, and the connectors 34 are inserted through the mounting holes to fixedly connect the fiber optic junction box 10 to the box mounting posts 67, thereby completing the installation. Moreover, the panel 30 of the installed optical fiber junction box 10 faces the operation hole 66, so that the operator can conveniently operate the input and output ports on the optical fiber junction box 10. Also, as can be seen in FIG. 8, four fiber optic junction boxes 10 can be mounted in the exemplary fiber optic enclosure.

Having thus described the preferred construction of the invention, it is to be understood that obvious modifications and variations can be made by persons skilled in the art in light of the above teachings and within the purview of the invention.

For example, in the configuration disclosed above, the fiber junction box 10 includes two 12-hole MPO adapters 33 as output adapters and two sets of 8-hole LC adapters 32 as input adapters, on the basis of which those skilled in the art can adjust the number and types of output adapters and input adapters as needed.

As another example, the slidable engagement and connection between the housing portion 50 and the drawer portion 60 may be accomplished in other manners. Also, the number of the reinforcing ribs 55 and the recesses 58 provided on the housing part 50 may be set as desired.

Claims (10)

1. An optical fiber junction box for connecting optical fibers, comprising a box cover and a panel connected to the front end of the box cover, characterized in that the optical fiber junction box further comprises:

at least one input adapter mounted on the panel and configured to receive an input fiber from a direction of a front end of the fiber optic enclosure;

at least one output adapter mounted on the panel and configured to receive an output fiber from a direction of a front end of the fiber optic junction box; and

a fiber optic furcation apparatus housed within the splice enclosure cover for connecting the input fibers connected to the input adapters with the output fibers connected to the output adapters.

2. The fiber optic junction box of claim 1, wherein the input adapters are LC adapters and/or the output adapters are MPO adapters.

3. The fiber optic junction box of claim 1, wherein two MPO adapters are mounted on the panel, the MPO adapters being 12-hole MPO adapters, each MPO adapter corresponding to a set of 8-hole LC adapters.

4. A fiber optic enclosure comprising a housing portion and a drawer portion slidably engaged with the housing portion, wherein at least one fiber optic splice cassette of any of claims 1-3 is mounted on the drawer portion.

5. The fiber optic enclosure of claim 4, wherein the housing portion includes a top plate and housing side plates on left and right sides of the top plate, at least one reinforcing rib being provided on a connecting edge portion between the top plate and each of the housing side plates.

6. The fiber optic enclosure of claim 5, wherein the reinforcing ribs are formed as depressions that are outwardly concave from the outside to the inside.

7. The fiber optic enclosure of claim 5, wherein a flap is disposed at a lower edge of the enclosure side panel, the flap supporting the draw when the draw is mated with the enclosure portion, the flap having at least one indentation formed therein.

8. The fiber optic enclosure of claim 5, wherein a flap is disposed on a lower edge of the top panel, the flap having at least one indentation formed therein.

9. The fiber optic enclosure of claim 4, wherein a junction box mounting post is disposed on the pull, the fiber optic junction box being secured to the junction box mounting post.

10. The fiber optic enclosure of claim 9, wherein an access hole is provided near a front end of the pull, the access hole being adjacent to the terminal block mounting post.

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