Fiber distribution box

Abstract

Disclosed in the present utility model is a fiber distribution box, comprising a fiber fusion splice assembly arranged therein, and characterized in that the fiber fusion splice assembly comprises: a stepped fiber splice tray holder having a plurality of step surfaces, wherein rotating shaft bases are arranged on the step surfaces, and the fiber splice tray holder is fixedly connected to the interior of a box body of the fiber distribution box; and a fiber splice tray assembly comprising a plurality of fiber splice trays stacked up and down in a stepped manner, wherein each fiber splice tray is correspondingly arranged on one step surface, one end surface of each fiber splice tray is provided with a rotating shaft parallel to the corresponding step surface, the rotating shaft is connected to the corresponding rotating shaft base, and the fiber splice tray can stand on the fiber splice tray holder after rotation. According to the fiber distribution box of the present utility model, the fiber splice tray assembly occupies a relatively small space in the box after being flipped and unfolded and avoids pulling optical fibers.

Description

Optical fiber splitter box Technical Field

[0001] The utility model relates to the technical field of communications, in particular to an optical fiber splitter box. Background Art

[0002] The fiber optic splitter box is an indispensable device in the optical network transmission process, with functions such as fusion splicing, splitting, and wiring output. Among them, the fusion splicing function of the fiber optic splitter box is realized by the fiber optic splice tray set in the box. The fiber optic splice tray is generally composed of a plurality of fiber splice base trays and a cover plate stacked up and down. In order to leave operating space for construction personnel during fusion splicing, the fiber splice base tray needs to be able to be flipped. The prior art can refer to the structure disclosed in the Chinese invention patent application "Optical Cable Splice Box" with application number 201611014787.2 (application publication number CN106371181A). The end of each fiber splice base tray is provided with an axle pin and a pin hole, and the axle pin of the upper fiber splice base tray is inserted into the pin hole of the lower adjacent fiber splice base tray, so that each fiber splice base tray can be flipped.

[0003] However, the above structure has at least the following three defects: (1) The optical fiber splice tray occupies a large space when flipped and unfolded, and is easy to touch other components in the box in the narrow space of the optical fiber splitter box; (2) When flipping a multi-layer splice tray, the position of the upper layer's line inlet will be greatly displaced, which will pull the optical fiber, and may cause damage to the optical fiber data transmission or even disconnection; (3) The multiple splice trays are aligned and stacked in the vertical direction, and there is a lack of grip when a specific splice tray needs to be flipped, making flipping inconvenient.

[0004] Therefore, further improvements are needed to the structure of the existing optical fiber splitter box.

[0005] Utility Model Content

[0006] The technical problem to be solved by the utility model is to propose an optical fiber splitter box in response to the above technical status quo, which occupies a smaller space in the box after the fiber splicing tray is turned over and unfolded, and avoids pulling the optical fiber.

[0007] The technical solution adopted by the utility model to solve the above technical problems is: an optical fiber splitter box, including an optical fiber fusion splicing component arranged inside, characterized in that the optical fiber fusion splicing component includes

[0008] A stepped fiber splicing tray support having multiple stepped surfaces with a rotating shaft base provided on the stepped surfaces, and the fiber splicing tray support is fixedly connected to the inside of the box body of the optical fiber splitter box;

[0009] The optical fiber splice tray includes a plurality of splice base trays stacked up and down in a stepped manner. Each splice base tray is placed on a corresponding step surface. One end surface of each splice base tray is provided with a rotating shaft parallel to the step surface. The rotating shaft is connected to the corresponding rotating shaft base. After the splice base tray is rotated, it can stand on the splice tray bracket.

[0010] In order to ensure the standing stability of the fiber fusion base, preferably, the end face of the fiber fusion base provided with a rotating shaft has two protrusions, and the rotating shaft is arranged between the two protrusions. The surface of the protrusion away from the end face is a plane, and when the fiber fusion base is rotated vertically, the plane is against the shaft base, so that the fiber fusion base can stand on the fiber fusion base bracket with the plane as the fulcrum. A vertical limit plate is provided on the side of the shaft base away from the fiber fusion base to prevent the fiber fusion base from falling backwards.

[0011] To save materials, preferably, the rotating shaft is divided into two spaced-apart sections, and each section is connected to one of the protrusions.

[0012] Preferably, at least one side of the step surface of the fiber splicing tray holder has an extension plate extending axially along the rotation axis, and an optical fiber guide channel is formed between the upper and lower adjacent extension plates, which can guide the optical fiber into the fiber splicing tray for splicing.

[0013] In order to prevent the optical fiber in the guide channel from escaping to both sides, preferably, the end of the extension plate has a baffle that is folded upward, and each of the baffles is staggered in the vertical direction to avoid occupying too much operating space.

[0014] Preferably, the optical fiber splitter box further comprises a splitter fixing plate, one end face of which is also provided with a rotation axis parallel to the step surface, and the rotation axis is connected to the rotation axis base of the lowest step surface of the fiber splicing tray bracket.

[0015] Preferably, it also includes an inlet and outlet assembly embedded in the side wall of the box body of the optical fiber splitter box, the inlet and outlet assembly includes a main optical cable inlet and outlet piece with a main optical cable inlet and outlet hole, the outer surface of the main optical cable inlet and outlet piece is provided with a first guide groove with the same axial direction as the main optical cable inlet and outlet hole, and a second guide groove located on the same cutting plane as the first guide groove. The main optical cable inlet and outlet piece is cut along the guide groove, and the main optical cable can be inserted into the main optical cable inlet and outlet hole from the cut.

[0016] Preferably, the inlet and outlet assembly also includes a distribution optical cable outlet component with multiple rows of distribution optical cable outlet holes, and the distribution optical cable outlet component is provided with an optical cable channel connecting two adjacent distribution optical cable outlet holes in the same row. The distribution optical cable entering the distribution optical cable outlet hole can be directly dragged from the upper part to the lower part through the optical cable channel.

[0017] In order to facilitate the regular arrangement of multiple layers of optical cables, it is preferred that an optical cable fixing part is fixed inside the optical fiber distribution box body, and the optical cable fixing part is a plate bent into an L shape, having a horizontal bottom and a vertical side, and the plate surface of the vertical side is recessed to form a plurality of horizontally extending optical cable positioning grooves, and the optical cable positioning grooves are vertically arranged on the two plate surfaces of the vertical side.

[0018] To facilitate fixing the optical cable fixing member in the box body, preferably, the bottom wall of the optical fiber splitter box is provided with a prismatic positioning column, and the horizontal bottom of the optical cable fixing member is provided with a fixing member positioning groove that cooperates with the prismatic positioning column.

[0019] Preferably, the fiber optic splitter box further includes a fiber optic adapter fixing module, the fiber optic adapter fixing module including an adapter panel and an adapter panel fixing seat, the adapter panel having a locking protrusion on the lower side, the adapter panel fixing seat including a base plate and a plurality of vertical plates standing upright on the base plate and spaced apart, each vertical plate having a guide groove extending in the length direction, and the two sides of the adapter panel are respectively located in the guide grooves of two adjacent vertical plates; the lower portion of the vertical plate is provided with a limiting step, and the locking protrusion of the adapter panel can be abutted against the limiting step to achieve vertical limiting; the upper portion of the vertical plate is provided with a locking groove, and the adapter panel can slide up along the guide groove so that the locking protrusion is locked into the locking groove. The locking groove on the adapter panel fixing seat and the locking protrusion on the adapter panel cooperate to control the position of the adapter panel when it is pulled upward, facilitating the operation of the construction worker.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) The utility model provides a stepped fiber splicing tray bracket, which allows the fiber splicing trays to be arranged in a stepped manner and stacked on the bracket. When a specific fiber splicing tray is to be flipped, a finger can be inserted under the fiber splicing tray to apply force to achieve easy and accurate flipping; (2) In the prior art, the fiber splicing tray is usually flipped and unfolded 180 degrees, or flipped until it is supported by the inner wall of the box, while the utility model converts the space occupied in the horizontal direction into the space occupied in the vertical direction, avoiding the risk of the flipped fiber splicing tray squeezing other components in the fiber optic splitter box; (3) In addition, each fiber splicing tray designed with this structure will hardly be displaced at the line inlet after flipping, so it will not pull the optical fiber; (4) The fiber splicing trays in the prior art are generally fixed directly to the bottom of the splitter box in one or more positions, which is inconvenient to disassemble and use, while the utility model can arbitrarily replace the number of fiber splicing trays and splitter fixing trays to meet various customer requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic structural diagram of an embodiment of the present utility model;

[0023] FIG2 is a schematic structural diagram of an optical fiber fusion splicing assembly and a splitter fixing plate according to an embodiment of the present invention;

[0024] FIG3 is a schematic diagram of a fiber splicing tray support according to an embodiment of the present invention;

[0025] FIG4 is a side view of FIG2;

[0026] FIG5 is a schematic structural diagram of an inlet and outlet line assembly according to an embodiment of the present invention;

[0027] FIG6 is a schematic structural diagram of an optical cable fixing member according to an embodiment of the present invention;

[0028] FIG7 is a schematic structural diagram of an inverted optical cable fixing member according to an embodiment of the present invention;

[0029] FIG8 is a schematic structural diagram of an adapter panel fixing module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0031] Figures 1 to 8 show a preferred embodiment of a fiber optic splitter box according to the present invention. The fiber optic splitter box primarily includes a fiber optic splicing assembly 1 for splicing optical fibers together, an inlet and outlet assembly 3 for introducing and extracting optical cables into and from the splitter box, and a cable fixture 4 for securing the optical cables near the inlet and outlet assembly 3.

[0032] The optical fiber fusion splicing assembly 1 primarily comprises a stepped splice tray support 11 and a fiber splice tray. The splice tray support 11, used to support the fiber splice tray, features multiple stepped surfaces 111, each of which is provided with a rotating shaft base 112. Extension plates 113 extend axially along the rotating shaft 121 on either side of the stepped surfaces 111 of the splice tray support 11. Fiber guide channels are formed between adjacent extension plates 113. The ends of the extension plates 113 are folded upward with baffles 114, each of which is vertically staggered.

[0033] The optical fiber splice tray is the primary component for performing the splicing operation. It comprises multiple splice base trays 12, each placed on a corresponding step surface 111, forming a stepped stack of the base trays 12. Each splice base tray 12 has two protrusions 122 on one end. Connected between these protrusions is a rotating shaft 121, parallel to the step surface 111. This shaft 121 is connected to the corresponding shaft base 112, allowing the splice base tray 12 to be rotatably attached to the splice tray support 11. In this embodiment, the rotating shaft 121 is designed with two spaced ends, each connected to a protrusion 122. The surface of the above-mentioned protrusion 122 away from the end face on which it is located is a plane, and when the fiber splicing base 12 is rotated vertically, the plane is against the shaft base 12, so that the fiber splicing base 12 can stand on the fiber splicing base bracket 11 with the plane as the fulcrum. A vertical limit plate 115 is provided on the side of the shaft base 112 away from the fiber splicing base 12, which enhances the anti-disturbance ability of the fiber splicing base 12 when it is standing.

[0034] Below the optical fiber splicing tray of the splitter fixing tray 2 , one end surface of the splitter fixing tray 2 is provided with a rotating shaft 121 parallel to the step surface 111 , and the rotating shaft 121 is connected to the rotating shaft base 112 of the lowest step surface 111 of the splicing tray bracket 11 .

[0035] The inlet and outlet assembly 3 is embedded in the side wall of the fiber optic splitter box. The inlet and outlet assembly 3 includes a main optical cable inlet and outlet member 31 with a main optical cable inlet and outlet hole 311. The outer surface of the main optical cable inlet and outlet member 31 is provided with a first guide groove 312 axially aligned with the main optical cable inlet and outlet hole 311, and a second guide groove 313 located on the same plane as the first guide groove 312. The inlet and outlet assembly 3 also includes a distribution cable outlet member 32 with multiple rows of distribution cable outlet holes 321. The distribution cable outlet member 32 is provided with an optical cable channel 322 that connects two adjacent distribution cable outlet holes 321 in the same row.

[0036] An optical cable fixture 4 is provided near the inlet and outlet assembly 3. The optical cable fixture 4 is a plate bent into an L-shape, having a horizontal bottom and a vertical side. The plate surface of the vertical side is recessed to form a plurality of horizontally extending optical cable positioning grooves 41, and the optical cable positioning grooves 41 are vertically arranged on the two plate surfaces of the vertical side. The optical cables are inserted into the optical cable positioning grooves 41 in an orderly manner and tied with cable ties. The bottom wall of the optical fiber splitter box is provided with a prismatic positioning column 42. The horizontal bottom of the optical cable fixture 4 is provided with a fixture positioning groove 43 that cooperates with the prismatic positioning column 42. After positioning, the optical cable fixture 4 can be fixed to the positioning column 42 with screws or bolts and nuts to prevent it from falling.

[0037] In addition, a fiber optic adapter fixing module 5 is also provided in the fiber optic splitter box, which includes an adapter panel 51 and an adapter panel fixing seat 52. The lower side of the adapter panel 51 has a locking protrusion 511, and the adapter panel fixing seat 52 includes a base plate 521 and a plurality of vertical plates 522 upright and spaced apart on the base plate 521. The plate surface of each vertical plate 522 is provided with a guide groove 523 extending along the length direction, and the two sides of the adapter panel 51 are respectively located in the guide grooves 523 of two adjacent vertical plates 522; the lower part of the vertical plate 52 is provided with a limiting step 524, and the locking protrusion 511 of the adapter panel 51 can be abutted against the limiting step 524 to achieve vertical limitation; the upper part of the vertical plate 522 is provided with a locking groove 525, and the adapter panel 51 can slide up along the guide groove 523 so that the locking protrusion 511 is locked into the locking groove 525. The adapter panel fixing seat 52 has a certain degree of elasticity, and the vertical plate 522 can be broken apart to both sides, and then the adapter panel 51 can be pulled out upward. The locking groove 525 on the vertical plate 222 and the locking protrusion 511 on the adapter panel 51 can cooperate to control the upward position of the adapter panel 51 and fix it, which is convenient for the construction operator to operate.

[0038] An incoming optical cable fixing plate 6 is provided near the incoming and outgoing cable assembly 3. Aramid yarn and small-diameter FRP can be fixed by pressing the block and tightening the screws on top. For FRP, the FRP center reinforcement of the optical cable can be passed through the circular hole on the hexagonal column and fixed by tightening the screws on top.

[0039] In the specification and claims of the present invention, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and components of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An optical fiber splitter box, comprising an optical fiber fusion splicing assembly arranged inside, characterized in that: The optical fiber fusion splicing assembly (1) comprises A stepped fiber splicing tray support (11) having a plurality of stepped surfaces (111), a rotating shaft base (112) being provided on the stepped surfaces (111), and the fiber splicing tray support (11) being fixedly connected to the interior of the box body of the optical fiber splitter box; The optical fiber splicing tray comprises a plurality of splicing trays (12) stacked up and down in a step-like arrangement, each splicing tray (12) being placed on a corresponding step surface (111), one end surface of each splicing tray (12) being provided with a rotating shaft (121) parallel to the step surface (111), the rotating shaft (121) being connected to a corresponding rotating shaft base (112), and the splicing tray (12) being able to stand on the splicing tray support (11) after being rotated.

2. The optical fiber splitter box according to claim 1, characterized in that: The end face of the fiber fusion base disk (12) provided with a rotating shaft (121) is provided with two protrusions (122), the rotating shaft (121) is arranged between the two protrusions (122), the surface of the protrusion (122) away from the end face is a plane, and when the fiber fusion base disk (12) is rotated vertically, the plane abuts against the rotating shaft base (12), so that the fiber fusion base disk (12) can stand on the fiber fusion disk support (11) with the plane as a fulcrum, and a vertical limit plate (115) is provided on the side of the rotating shaft base (112) away from the fiber fusion base disk (12).

3. The optical fiber splitter box according to claim 2, characterized in that: The rotating shaft (121) is divided into two spaced-apart sections, and each section is respectively connected to one of the protrusions (122).

4. The optical fiber splitter box according to claim 1, characterized in that: At least one side of the step surface (111) of the fiber splicing tray support (11) has an extension plate (113) extending axially along the rotating shaft (121), and an optical fiber guiding channel is formed between the upper and lower adjacent extension plates (113).

5. The optical fiber splitter box according to claim 4, characterized in that: The end of the extension plate (113) is provided with a baffle plate (114) which is folded upward, and each of the baffle plates (114) is staggered in the vertical direction.

6. The optical fiber splitter box according to claim 1, characterized in that: The optical fiber splitter box also includes a splitter fixing plate (2), one end surface of which is also provided with a rotation axis (121) parallel to the step surface (111), and the rotation axis (121) is connected to a rotation axis base (112) of the lowest step surface (111) of the fiber splicing plate support (11).

7. The optical fiber splitter box according to claim 1, characterized in that: The invention also comprises an inlet and outlet assembly (3) embedded in the side wall of the box body of the optical fiber distribution box, wherein the inlet and outlet assembly (3) comprises a main optical cable inlet and outlet piece (31) with a main optical cable inlet and outlet hole (311), and the outer surface of the main optical cable inlet and outlet piece (31) is provided with a first guide groove (312) axially the same as the main optical cable inlet and outlet hole (311), and a second guide groove (313) located on the same cutting plane as the first guide groove (312).

8. The optical fiber splitter box according to claim 7, characterized in that: The inlet and outlet cable assembly (3) further comprises a distribution optical cable outlet piece (32) having a plurality of rows of distribution optical cable outlet holes (321), and the distribution optical cable outlet piece (32) is provided with an optical cable channel (322) communicating with two adjacent distribution optical cable outlet holes (321) in the same row.

9. The optical fiber splitter box according to claim 1, characterized in that: It also includes an optical cable fixing part (4) fixed inside the optical fiber distribution box body, wherein the optical cable fixing part (4) is a plate bent into an L shape, having a horizontal bottom and a vertical side, the plate surface of the vertical side is recessed to form a plurality of horizontally extending optical cable positioning grooves (41), and the optical cable positioning grooves (41) are vertically arranged on two plate surfaces of the vertical side.

10. The optical fiber splitter box according to claim 9, characterized in that: The bottom wall of the optical fiber splitter box is provided with a prismatic positioning column (42), and the horizontal bottom of the optical cable fixing member (4) is provided with a fixing member positioning groove (43) that cooperates with the prismatic positioning column (42).

11. The optical fiber splitter box according to claim 1, characterized in that: The optical fiber distribution box is also provided with an optical fiber adapter fixing module (5), the optical fiber adapter fixing module comprising an adapter panel (51) and an adapter panel fixing seat (52), the lower part of the side of the adapter panel (51) having a locking protrusion (511), the adapter panel fixing seat (52) comprising a bottom plate (521) and a plurality of vertical plates (522) standing upright on the bottom plate (521) and distributed at intervals, each of the vertical plates (522) having a guide groove (523) extending along the length direction. The two sides of the adapter panel (51) are respectively located in the guide grooves (523) of two adjacent vertical plates (522); a limiting step (524) is provided at the lower part of the vertical plate (522); a locking protrusion (511) of the adapter panel (51) can abut against the limiting step (524) to achieve vertical limiting; a locking groove (525) is provided at the upper part of the vertical plate (522); the adapter panel (51) can slide up along the guide groove (523) so that the locking protrusion (511) is locked into the locking groove (525).

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