CN107831575B - Layered drawing structure and high-density optical fiber distribution box - Google Patents

Abstract

The invention discloses a layered drawing structure which comprises a base, a middle drawing plate, an optical fiber module box, an upper cover, a front door plate, a rear door plate and hanging lugs, wherein the middle drawing plate is arranged on the base; the base consists of a bottom plate and supporting walls arranged on two sides of the bottom plate to form a U-shaped cavity structure, wherein a middle-layer drawing plate is arranged in the cavity of the base, and an upper cover is arranged at the upper end of the base; a plurality of fiber module boxes are arranged on the middle-layer drawing plate side by side; the inner sides of the two supporting walls of the base are respectively fixed with a first guide rail, and the two side edges of the middle layer drawing plate are respectively fixed with a second guide rail, wherein the second guide rail is arranged in the first guide rail and matched with the first guide rail; and a plurality of groups of third guide rails are fixed on the middle-layer drawing plate and are transversely arranged side by side along the middle-layer drawing plate, wherein a fiber module box is arranged between every two adjacent groups of third guide rails. The invention has higher capacity under the same height; the layered structure can be better managed and operated; the front-back wire arranging device of the wiring box is convenient to use, simple to operate and reasonable in wiring.

Description

Layered drawing structure and high-density optical fiber distribution box

Technical Field

The invention relates to the technical field of optical fiber communication, in particular to a layered drawing structure and a high-density optical fiber distribution box.

Background

With the development of modern communication technology, mature digital technologies, i.e. voice, data, image, etc. information can be transmitted and exchanged through bit streams encoding 0 and 1. At present, the telecommunication market in China enters a new upgrading period, the rapid growth of data service puts forward higher requirements on network speed and quality, and under the large background of integration of three networks, the matching equipment such as an external cabinet and an external distribution box of a communication user are generated to meet the requirement of broadband speed increase.

The optical fiber distribution system of the MTP/MPO standard is used as a new standard for the optical fiber system distribution of data centers in developed areas such as Europe and America, and is increasingly widely used, and the MTP/MPO optical fiber interface standard can provide at least 12 times of connection capacity under the condition of the same volume, so that more space is saved. The most commonly used way today is to convert an MTP or MPO standard 12-or 24-core connector to an LC interface connector to effect device node-to-terminal link distribution, most of the MTP/MPO standard fiber optic enclosures on the market today that are modular and hierarchically managed are limited by adapter size and 19 inch standard cabinet width and height size, with the 1U height distribution system now being 96-core fiber at maximum capacity.

In order to meet the requirements of cloud computing, cloud storage and cloud network, the conventional common MTP (MPO) optical fiber wiring system on the market cannot meet the requirements of modern networks, wiring management is required to be more reasonable, a layered structure is clearer, modular structures can be independently managed and do not interfere with each other, the design concepts of larger capacity, higher density, more reasonable wiring and simpler operation are realized at the same height (the number of U frames), and under the same condition, the requirements of accommodating more optical fiber cores, managing the layered structure and independently operating by a single module are met, so that the system becomes the problem that all companies want to solve.

The conventional LC single-core or double-core jumper wire is applied to a high-density and high-capacity wiring system, is inconvenient to operate and difficult to pull out and install, and the COVER on the LC connector needs to occupy the space above the LC adapter, so that two adapters cannot be closely connected together, and a space needs to be reserved between the two adapters for avoiding the LC connector, thus limiting the capacity of the wiring system in practical operation, and the design mode leads to the maximum capacity of the 1U wiring system to be 144 cores, so that the capacity of the wiring system cannot be broken through.

The conventional high-density wiring system in the market does not adopt layered management or does not adopt a modular design, so that the conventional high-density wiring system cannot be replaced with each other in actual application, cannot be independently operated in operation, is very inconvenient in back-end maintenance, is very easy to damage surrounding links, needs more time to check when retrieving faults, and can increase more cost in maintenance, therefore, the design of a layered, modular and pull-type high-density wiring system becomes a requirement, and can use the modular type mutual replacement to replace different adapters, so that different network requirements can be met.

Disclosure of Invention

The invention mainly aims to provide a layered drawing structure and a high-density optical fiber distribution box, which aim to improve convenience of replacing and maintaining an optical fiber module box.

In order to achieve the above purpose, the present invention provides the following technical solutions: a layered drawing structure comprises a base, a middle drawing plate, an optical fiber module box and an upper cover; the base consists of a bottom plate and supporting walls arranged on two sides of the bottom plate to form a U-shaped cavity structure, wherein a middle-layer drawing plate is arranged in the cavity of the base, and an upper cover is arranged at the upper end of the base; a plurality of fiber module boxes are arranged on the middle-layer drawing plate side by side; the inner sides of the two supporting walls of the base are respectively fixed with a first guide rail, and the two side edges of the middle layer drawing plate are respectively fixed with a second guide rail, wherein the second guide rail is arranged in the first guide rail and matched with the first guide rail; and a plurality of groups of third guide rails are fixed on the middle-layer drawing plate and are transversely arranged side by side along the middle-layer drawing plate, wherein a fiber module box is arranged between every two adjacent groups of third guide rails.

Preferably, the first guide rail is of a concave structure, and a first guide rail groove is formed in the first guide rail; the front end of the first guide rail is provided with a first limit groove, and the rear end of the first guide rail is provided with a second limit groove.

Preferably, the second guide rail is in a T-shaped structure, and the second guide rail is arranged in the first guide rail groove of the first guide rail; the front end of the second guide rail is provided with a first groove, and a first limiting block is arranged above the first groove; the rear end of the second guide rail is provided with a second groove, and a second limiting block is arranged above the second groove.

Preferably, the first limit groove and the second limit groove form a fastening structure with the first limit block and the second limit block respectively so as to limit the longitudinal movement of the second guide rail in the first guide rail.

Preferably, the third guide rails are of a non-type structure, 5 groups of the third guide rails are arranged on the middle-layer drawing plate at equal intervals, and 3 groups of second guide rail grooves are formed in each group of third guide rails; and a third limiting block is arranged in the middle of each second guide rail groove.

Preferably, the optical fiber module box consists of a bottom cover and an upper cover arranged above the bottom cover, and a fiber melting device, an adapter plug and an optical cable fixing seat are arranged in the optical fiber module box; guide arms are respectively arranged on the outer sides of the two side walls of the bottom cover, and a third limit groove is formed in the middle of each guide arm; the front end of the bottom cover bottom plate is provided with 6 groups of first mounting grooves, wherein an LC adapter or an MPO adapter and an MTP adapter are mounted in each first mounting groove; the rear end of the bottom cover is provided with 6 groups of second mounting grooves which have the same structure as the first mounting grooves and are symmetrical in position, wherein each second mounting groove is internally provided with an MPO adapter or an MTP adapter; limiting side plates are respectively fixed on two side edges of the second mounting groove, the limiting side plates and the bottom cover are integrally formed, and each limiting side plate is provided with a first clamping groove and a second clamping groove respectively.

Preferably, the first mounting groove and the second mounting groove are of a concave structure, wherein a height difference of 0.4-0.7 mm is arranged between the first mounting groove and the bottom plate of the bottom cover, and a height difference of 0.4-0.7 mm is arranged between the second mounting groove and the bottom plate of the bottom cover, so that the size height of the optical fiber module box is ensured; the two side walls of the bottom plate of the bottom cover extend towards the front end of the first mounting groove, a wire arranging handle is arranged at the extending end of the bottom plate, and reinforcing ribs are arranged on the wire arranging handle.

Preferably, the guide arm is arranged in the second guide rail groove, wherein a third limit groove on the guide arm is matched with a third limit block in the second guide rail groove.

Preferably, the layered drawing structure comprises a base, a primary drawing plate, a secondary drawing plate, a tertiary drawing plate, an optical fiber module box and an upper cover; the base consists of a bottom plate and supporting walls arranged on two sides of the bottom plate to form a U-shaped cavity structure, wherein a primary drawing plate, a secondary drawing plate and a tertiary drawing plate are arranged in the cavity of the base, and an upper cover is arranged at the upper end of the base; the primary drawing plate, the secondary drawing plate and the tertiary drawing plate are sequentially arranged above and below the base cavity, wherein 4 optical fiber module boxes are arranged on each primary drawing plate side by side;

a fourth guide rail is fixed on the inner sides of the two supporting walls of the base, and a first-stage guide rail groove, a second-stage guide rail groove and a third-stage guide rail groove are formed in the fourth guide rail; the two sides of the primary drawing plate are fixedly provided with primary guide rails, the two sides of the secondary drawing plate are fixedly provided with secondary guide rails, the two sides of the tertiary drawing plate are fixedly provided with tertiary guide rails, wherein the primary guide rails are arranged in primary guide rail grooves, the secondary guide rails are arranged in secondary guide rail grooves, and the tertiary guide rails are arranged in tertiary guide rail grooves;

and 5 groups of fifth guide rails are respectively fixed on the primary drawing plate, the secondary drawing plate and the tertiary drawing plate, wherein an optical fiber module box is arranged between two adjacent groups of fifth guide rails on each primary drawing plate.

In addition, in order to achieve the above object, the present invention further provides a high-density optical fiber distribution box, wherein the high-density optical fiber distribution box comprises a layered drawing structure, the layered drawing structure comprises a base, a middle drawing plate, an optical fiber module box and an upper cover; the base consists of a bottom plate and supporting walls arranged on two sides of the bottom plate to form a U-shaped cavity structure, wherein a middle-layer drawing plate is arranged in the cavity of the base, and an upper cover is arranged at the upper end of the base; a plurality of fiber module boxes are arranged on the middle-layer drawing plate side by side; the inner sides of the two supporting walls of the base are respectively fixed with a first guide rail, and the two side edges of the middle layer drawing plate are respectively fixed with a second guide rail; wherein the second guide rail is arranged in the first guide rail and is matched with the first guide rail; and a plurality of groups of third guide rails are fixed on the middle-layer drawing plate and are transversely arranged side by side along the middle-layer drawing plate, wherein a fiber module box is arranged between every two adjacent groups of third guide rails.

Compared with the prior art, the invention has the beneficial effects that:

1. at the same height, the capacity is higher and the density is higher;

2. the layered structure can be better managed and operated;

3. the modular structure can be replaced, so that the maintenance is more convenient, and the maintenance cost is reduced;

4. the box body can be used in various ways, can be directly welded in the module box, can be used for replacing different adapters and can be applied to different occasions, and the requirements of 10G/40G/100G can be met;

5. the method can be expanded to higher U numbers to meet different customers;

6. the internal and external structural design of the product is more compact and more reasonable, the data transmission is not influenced by the external environment, the external force resistance effect is stronger, and the product is not damaged;

7. the front-back wire arranging device of the wiring system is more convenient to use, simpler to operate and more reasonable in wiring.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the front pull structure of the middle drawer plate according to the present invention;

FIG. 4 is a schematic view of a pull-back structure of a middle drawer plate according to the present invention;

FIG. 5 is a schematic view of the structure of the first rail of the present invention;

FIG. 6 is a schematic view of the structure of the second rail of the present invention;

fig. 7a, 7b, 7c, 7d, 7e are schematic diagrams illustrating the principle of the first rail and the second rail according to the present invention;

FIGS. 8a, 8b, 8c are schematic views of the structure of the middle drawer plate of the present invention;

FIG. 9 is a schematic view of the structure of the third rail of the present invention;

FIG. 10 is a schematic view of a fiber optic module cartridge according to the present invention;

FIG. 11 is a schematic view of the structure of the bottom cover of the fiber optic module case of the present invention;

FIG. 12 is an exploded view of the fiber optic module cartridge of the present invention;

FIG. 13 is a schematic view of the fiber-melting device of the present invention;

FIG. 14 is a schematic view of the structure of the cable holder of the present invention;

FIG. 15 is a schematic view of the structure of an adapter bulkhead of the invention;

FIG. 16 is a front end management status reference diagram of a fiber optic module cartridge of the present invention;

FIG. 17 is a schematic diagram of a fiber optic module case LC pigtail fusion splice of the present invention;

FIG. 18 is a schematic diagram of a fiber optic module cassette of the present invention for connecting MPO/MTP-LC fiber optic jumpers:

FIG. 19 is a schematic diagram of a fiber optic module cassette of the present invention for connecting MPO/MTP-MPO/MTP fiber optic jumpers;

FIG. 20 is a schematic view of another construction of a layered drawer structure of the present invention;

FIG. 21 is a schematic view of the three-layer drawer panel of FIG. 20;

FIG. 22 is a schematic view of the fourth rail structure shown in FIG. 20;

fig. 23 is a schematic view of the drawing sheet shown in fig. 20.

Reference numerals illustrate:

reference number designation number designation

1. First groove of box 601

10. First limiting block of base 602

101. Second recess of bottom plate 603

102. Second limiting block of supporting wall 604

1021. First wire passing groove 70 hanging lug

1022. Third guide rail of second wire passing groove 80

103. Second guide rail groove of front door plate 801

1031. Third limiting block of first clamping piece 802

104. Rear door plate 90 wire arranging ring

1041. Second snap member 100 first optical cable

20. Second optical cable of middle layer drawing plate 1001

30. Adapter for fiber optic module cassette 110 LC

301. Bottom cover 111 MTP/MPO adapter

3011. First mounting groove 120 fiber melting device

3012. First bolt hole 121 first line card

3013. First clamping groove 122 second line clamp

3014. Second clamping groove 123 second bolt hole

3015. Second mounting groove 124 melts fine buckle

3016. Limiting side plate 130 optical cable fixing seat

302. Upper cover 131 fixing line clamp block

303. Guide arm 140 adapter plug

3031. Third limit groove 141 plug clamping block

304. Primary drawing plate of wire arranging handle 150

305. First-stage guide rail of reinforcing rib 1501

40. Two-stage drawing plate for upper cover 160

401. First button hole 1601 secondary guide rail

402. Third-stage drawing plate with second fastening holes 170

50. Three-stage guide rail of first guide rail 1701

501. Fourth guide rail of first guide rail groove 180

502. First limit groove 1801 primary guide rail groove

503. Second limit groove 1802 two-stage guide rail groove

60. Third-stage guide rail groove of second guide rail 1803

200. Fifth guide rail of bolt 190

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

The invention provides a layered drawing structure and a high-density optical fiber distribution box.

Referring to fig. 1, 2, 3 and 4, the present invention provides a layered drawing structure, which includes a base 10, a middle drawing plate 20, a fiber optic module box 30, and an upper cover 40; the base 10 is a U-shaped cavity structure formed by a bottom plate 101 and supporting walls 102 arranged on two sides of the bottom plate 101, wherein a middle-layer drawing plate 20 is arranged in the cavity of the base 10, and an upper cover 40 is arranged at the upper end of the base 10; a plurality of fiber optic module boxes 30 are arranged on the middle-layer drawing plate 20 side by side; the inner sides of the two supporting walls 102 of the base are respectively fixed with a first guide rail 50, and the two side edges of the middle layer drawing plate 20 are respectively fixed with a second guide rail 60; wherein the second rail 60 is disposed within the first rail 50 and cooperates with the first rail 50.

In this embodiment, the front end of the base 10 is provided with a front door plate 103, the rear end of the base 10 is provided with a rear door plate 104, wherein the front door plate 103 and the rear door plate 104 are respectively connected to the front end and the rear end of the base 10 through hinges, the base 10, the front door plate 103, the rear door plate 104 and the upper cover 40 enclose a box 1, wherein a first fastening member 1031 is provided on the front door plate 103, a second fastening member 1041 is provided on the rear door plate 104, the front end of the upper cover 40 corresponds to the first fastening member 1031 and is provided with a first fastening hole 401, and the rear end of the upper cover 40 corresponds to the second fastening member 1041 and is provided with a second fastening member 402. When the front door plate 103 or the rear door plate 104 rotates to a vertical position, namely rotates to be shielded at the front end and the rear end of the box body 1, the first buckling piece 1031 is clamped into the first buckling hole 401, and the second buckling piece 1041 is clamped into the second buckling hole 402, so that the front door plate 103, the rear door plate 104 and the upper cover 40 are connected; when the front door panel 103 and the rear door panel 104 are required to be opened, the first fastening member 1031 and the second fastening member 1041 of the front door panel 103 are pressed downward, the first fastening member 1031 is separated from the first fastening hole 401, and the second fastening member 1041 is separated from the second fastening hole 402, so that the front door panel 103 and the rear door panel 104 are rotated to be opened, and the components in the box 1 are exposed. The front end of the base supporting wall 102 is provided with a first wire passing groove 1021, the rear end of the supporting wall 102 is provided with a second wire passing groove 1022, and the first wire passing groove 1021 and the second wire passing groove 1022 are used for enabling an optical cable to pass through the supporting wall 102 and enter the box body. The outside of the supporting wall 102 is provided with a hanging lug 70, the hanging lug 70 is used for connecting the box body 1 with an external device, and the hanging lug 70 can meet the installation of cabinets with different specifications and sizes.

Referring to fig. 5 and fig. 6 in combination, the first guide rail 50 has a "concave" structure, and a first guide rail groove 501 is formed on the first guide rail 50; the front end of the first guide rail 50 is provided with a first limit groove 502, and the rear end of the first guide rail 50 is provided with a second limit groove 503. The second guide rail 60 is in a T-shaped structure, the second guide rail 60 is arranged in a first guide rail groove 501 of the first guide rail 50, a first groove 601 is formed in the front end of the second guide rail 60, and a first limiting block 602 is arranged above the first groove 601; a second groove 603 is formed at the rear end of the second guide rail 60, and a second limiting block 604 is arranged above the second groove 603.

The first limiting groove 502 and the second limiting groove 503 arranged in the first guide rail 50 and the first limiting block 602 and the second limiting block 604 arranged on the second guide rail 60 form a fastening structure respectively so as to limit the movement of the second guide rail 60 in the first guide rail 50.

In this embodiment, the first guide rail 50 is made of plastic, the first guide rail 50 is fixed on the inner side of the supporting wall 102 by bolts, and the first guide rail 50 can be overlapped, so that installation with different U numbers can be satisfied after the overlapping; the second guide rail 60 is made of plastic, the second guide rail 60 is fixed on the side edge of the middle-layer drawing plate 20 through screws, wherein a first limiting block 602 and a second limiting block 604 arranged at two ends of the second guide rail 60 are strip-shaped high-elastic plastic sheets, and the positions of the first limiting block and the second limiting block are upwards protruded to form buckles.

Referring to fig. 7a, 7b, 7c, 7d, and 7e in combination, the second guide rail 60 is disposed in the guide rail groove 501 of the first guide rail 50, where the original state is that the first stopper 602 is snapped and overlapped with the first limit groove 502, the second stopper 604 is snapped and overlapped with the second limit groove 503, when the middle-layer drawing plate 20 is pulled forward, the first stopper 602 and the second stopper 604 disposed on the second guide rail 60 slide out of the first limit groove 502 and the second limit groove 503 respectively through elasticity of the plastic piece, and when the middle-layer drawing plate 20 is pulled forward to a maximum distance, the second stopper 604 is snapped and overlapped with the first limit groove 502, thereby locking the second guide rail 60 and the first guide rail 50; when the middle-layer drawing plate 20 is pulled backwards, the first limiting block 602 and the second limiting block 604 arranged on the second guide rail 60 slide out of the first limiting groove 502 and the second limiting groove 503 respectively through the elasticity of the plastic part, and when the middle-layer drawing plate 20 is pulled backwards to a maximum distance, the first limiting block 602 and the second limiting groove 503 are buckled and overlapped, so that the second guide rail 60 and the first guide rail 50 are locked. The second guide rail 60 is matched with the first guide rail 50, and the elasticity of the plastic part is utilized, so that the middle-layer drawing plate 20 can move in the front-back direction, and the locking and releasing functions are realized.

Referring to fig. 8a, 8b, and 8c, a plurality of sets of third guide rails 80 (as shown in fig. 9) are fixed on the middle layer drawing board 20, and the third guide rails 80 are arranged side by side along the middle layer drawing board 20 in a lateral direction, wherein a fiber optic module box 30 is arranged between every two adjacent sets of third guide rails 80; the third guide rails 80 are in a non-type structure, 5 third guide rails 80 are arranged on the middle-layer drawing plate 20 at equal intervals, wherein 3 groups of second guide rail grooves 801 are formed in each group of third guide rails 80; a third limiting block 802 is arranged in the middle of each second guide rail groove 801. The middle drawer 20 has a plurality of wire loops 90 at the rear end of the box, and the wire loops 90 facilitate the management of the second optical cable 1001 by the middle drawer 20 at the rear end.

In this embodiment, 5 third guide rails 80 are equidistantly arranged on the middle drawer 20 so as to divide the middle drawer 20 into 4 accommodating chambers, wherein each accommodating chamber can accommodate 3 fiber optic module cassettes 30 up to middle and lower, and a total of 12 fiber optic module cassettes 30 can be installed, wherein each fiber optic module cassette 30 can accommodate a maximum of 12 cores of the first optical cable 100, and a total of 144 cores can be achieved.

1 middle layer drawing plate 20 can be installed at the height of 1U, and 12 fiber optic module boxes 30 are accommodated to 144 cores; 2 middle-layer drawing plates 20 can be installed at the height of 2U, and 24 fiber optic module boxes 30 are contained to 288 cores; 3 middle-layer drawing plates 20 can be arranged at the height of 3U, and 36 fiber optic module boxes 30 are accommodated to 432 cores; the 4U height may be sufficient for 48 fiber optic cartridges 30 to reach 576 cores.

Referring to fig. 10, 11 and 12 in combination, the fiber optic module case 30 is composed of a bottom cover 301 and an upper cover 302 disposed above the bottom cover 301, and the fiber optic module case 30 is internally provided with a fiber melting device 120, an adapter plug 140 and a cable fixing seat 130; guide arms 303 are respectively arranged on the outer sides of the two side walls of the bottom cover 301, and a third limit groove 3031 is formed in the middle position of each guide arm 303; the front end of the bottom cover 301 is provided with 6 first mounting grooves 3011, wherein each first mounting groove 3011 is internally provided with one LC adapter 110 or MPO/MTP adapter 111; the rear end of the bottom cover 301 is provided with 6 groups of second mounting grooves 3015, the second mounting grooves 3015 have the same structure as the first mounting grooves 3011 and are symmetrical in position, and each second mounting groove 3015 is internally provided with an MPO/MTP adapter 111; two side edges of the second mounting groove 3015 are respectively fixed with a limiting side plate 3016, the limiting side plates 3016 and the bottom cover 301 are integrally formed, and each limiting side plate 3016 is respectively provided with a first clamping groove 3013 and a second clamping groove 3014; the first installation groove 3011 and the second installation groove 3015 are in a 'concave' structure, wherein a height difference of 0.4-0.7 mm is arranged between the first installation groove 3011 and the bottom plate of the bottom cover 301, and a height difference of 0.4-0.7 mm is arranged between the second installation groove 3015 and the bottom plate of the bottom cover 301, so that the size height of the optical fiber module box 30 is ensured.

The two side walls of the bottom cover 301 extend to the front end of the first installation groove 3011 to form a wire arranging handle 304, wherein the wire arranging handle 304 is provided with a reinforcing rib 305, so that the overall strength of the fiber optic module box 30 is increased, the outgoing wires of the first optical cable 100 are facilitated, and the fiber optic module box 30 is prevented from deforming (as shown in fig. 16).

Referring to fig. 13, 14 and 15, 6 sets of second mounting grooves 3015 are provided at the rear end of the bottom cover 301, wherein two side edges of each second mounting groove 3015 are respectively fixed with a limiting side plate 3016, the limiting side plates 3016 and the bottom cover 301 are integrally formed, and each limiting side plate 3016 is provided with a first clamping groove 3013 and a second clamping groove 3014. The adapter 111, the cable fixing seat 130 and the adapter plug 140 can be installed in the second installation groove 3015, wherein the adapter 111 is used for connecting a second optical cable 1001, the cable fixing seat 130 is used for fixing a second optical cable 1001 passing through the second installation groove 3015, the adapter plug 140 is used for plugging the second installation groove 3015, the cable fixing seat 130 side wall is provided with a fixing clip 131, and the adapter plug 140 side wall is provided with a plug clip 141.

The first clamping groove 3013 on the limiting side plate 3016 is matched with the wire fixing clamping block 131 on the side wall of the optical cable fixing seat 130, the optical cable fixing seat 130 is fixed in the second mounting groove 3015, and the second clamping groove 3014 formed on the limiting side plate 3016 is matched with the plug clamping block 141 on the side wall of the adapter plug 140, so that the adapter plug 140 is fixed in the second mounting groove 3015.

The fiber melting device 120 may be in a disc shape, 2 groups of first line cards 121 and 2 groups of second line cards 122 are arranged on the periphery of the fiber melting device 120, the first line cards 121 are provided with inner openings, the second line cards 122 are provided with outer openings, the first line cards 121 and the second line cards 122 are distributed around the periphery of the fiber melting device 120 in a staggered manner, each group of first line cards 121 are symmetrically arranged, and each group of second line cards 122 are symmetrically arranged; the first line card 121 and the second line card 122 form an annular winding coil, which is used for managing wires in the optical fiber module box 30, and is convenient to use; a fiber-melting buckle 124 is provided in the fiber-melting device 120, and is used for clamping the fiber pigtails of the first optical cable 100 and the second optical cable 1001.

Referring to fig. 11 and 12 again, the fiber melting device 120 is disposed inside the fiber optic module case 30, and the fiber melting device 120 is fixed in the middle of the bottom cover 301; the middle position of the bottom cover 301 is provided with a first bolt hole 3012, and the fiber melting device 120 is provided with a second bolt hole 123, wherein the first bolt hole 3012 corresponds to the second threaded hole 123, and the fiber melting device 120 is firmly fixed on the inner surface of the bottom cover 301 by penetrating the second bolt hole 123 and the first bolt hole 3012 through the bolt 200.

Referring to fig. 12 again, guide arms 303 on two sides of the fiber optic module box 30 are disposed in the second guide rail groove 801 of the third guide rail 80, wherein the third limiting groove 3031 on the guide arms 303 is matched with the third limiting block 802 in the second guide rail groove 801. The fiber module box 30 is in sliding fit with the second guide rail groove 801 in the third guide rail 80 through the guide arm 303, the elasticity of the plastic part is utilized, the fiber module box 30 is moved in the front and back directions in the third guide rail 80, and meanwhile, the third limit groove 3031 and the third limit block 802 are matched to lock and unlock the fiber module box 30.

In this embodiment, the inside of the fiber optic module box 30 adopts a "concave" structure, and because the height of the LC adapter 110 is limited, the lower limit of the position of the LC adapter 110 must be 0.6mm in the fiber optic module box 30 itself, so that the upper cover 302 can be clamped with the bottom cover 301 without being affected after the LC adapter 110 is installed in the fiber optic module box 30.

The fiber optic module cartridge 30 may mount different types of adapters 111, the adapters 111 may be interchanged, and different combinations may be implemented, such as: LC fiber pigtail fusion connection, MPO-LC fiber jumper connection, MPO-MPO fiber jumper connection and the like can meet different networks of 10G/40G/100G.

Referring to fig. 17, when the fiber optic module case 30 is connected to the LC fiber pigtail, a fiber melting operation is required, the fiber melting device 120 is fixed in the middle of the bottom cover 301 by the bolt 200, the fiber melting device 120 can directly perform the fiber melting operation in the fiber optic module case 30, when the fiber optic module case 30 melts the fiber, only the fiber cable fixing seat 130 is required to be installed in the second installation groove 3015 at the rear end of the fiber optic module case 30 for fixing the second fiber optic cable 1001, and if the fiber fixing seat 130 installed in the second installation groove 3015 is not full, the adaptor plug 140 can be used to plug the redundant second installation groove 3015.

Referring to fig. 18, when an MPO-LC fiber jumper is installed through the fiber optic module box 30, the fiber melting device 120 can be removed from the bottom cover 301 without fiber melting operation, and when the MPO-LC fiber jumper is connected, an adapter 111 is required to be installed in the second installation groove 3015 at the rear end of the fiber optic module box 30, and is connected to the second optical cable 1001 through the adapter 111, so as to implement a 10G scheme, and if the adapter 111 installed in the second installation groove 3015 is not full, the adapter plug 140 can be used to plug the redundant second installation groove 3015.

Referring to fig. 19, when an MPO-MPO optical fiber jumper is installed by the optical fiber module box 30, the fiber melting operation is not required, the fiber melting device 120 is removed from the bottom cover 301, and when the MPO-MPO optical fiber jumper is connected, an adapter 111 is required to be installed in the second installation groove 3015 at the rear end of the optical fiber module box 30, and the adapter 111 is connected to the second optical cable 1001, so that a 40/100G scheme is implemented, and if the adapter 111 installed in the second installation groove 3015 is not full, the adapter plug 140 can be used to block the redundant second installation groove 3015.

Referring to fig. 20, 21, 22 and 23, in the present embodiment, the layered drawing structure includes a base 10, a primary drawing plate 150, a secondary drawing plate 160, a tertiary drawing plate 170, a fiber optic module box 30, and an upper cover 40; the base 10 is a "U" cavity structure formed by a bottom plate 101 and supporting walls 102 disposed at two sides of the bottom plate 101, wherein a primary drawing plate 150, a secondary drawing plate 160 and a tertiary drawing plate 170 are disposed in the cavity of the base 10, and an upper cover 40 is disposed at the upper end of the base 10; the primary drawing plate 150, the secondary drawing plate 160 and the tertiary drawing plate 170 are sequentially arranged in the cavity of the base 10 from top to bottom, wherein 4 fiber module boxes 30 are arranged on each primary drawing plate side by side.

Referring to fig. 20 again, a fourth guide rail 180 is fixed inside the two supporting walls 102 of the base 10, wherein a first guide rail groove 1801, a second guide rail groove 1802 and a third guide rail groove 1803 are formed on the fourth guide rail 180; the primary guide rails 1501 are fixed on two sides of the primary drawing plate 150, the secondary guide rails 1601 are fixed on two sides of the secondary drawing plate 160, the tertiary guide rails 1701 are fixed on two sides of the tertiary drawing plate 170, the primary guide rails 1501 are arranged in the primary guide rail grooves 1801, the secondary guide rails 1601 are arranged in the secondary guide rail grooves 1802, and the tertiary guide rails 1701 are arranged in the tertiary guide rail grooves 1803.

Referring to fig. 23 again, the primary drawing board 150, the secondary drawing board 160 and the tertiary drawing board 170 have the same structure, and in this embodiment, the primary drawing board 150 is taken as an example, wherein 5 fifth guide rails 190 are fixed on the primary drawing board 150, and a fiber module box 30 is disposed between two adjacent fifth guide rails 190 on the primary drawing board 150.

The present invention further provides a high-density optical fiber distribution box 1, and the high-density optical fiber distribution box 1 includes a layered drawing structure, and the layered drawing structure can refer to the above embodiment and is not described herein. It should be noted that, since the high-density optical fiber distribution box 1 of the present embodiment adopts the technical scheme of the above-described layered drawing structure, the high-density optical fiber distribution box 1 has the advantageous effects of the above-described layered drawing structure.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (6)

1. A layered drawing structure comprises a base, a middle drawing plate, an optical fiber module box and an upper cover; the novel plastic base is characterized in that the base consists of a bottom plate and supporting walls arranged on two sides of the bottom plate to form a U-shaped cavity structure, wherein a middle layer drawing plate is arranged in the cavity of the base, and an upper cover is arranged at the upper end of the base; a plurality of fiber module boxes are arranged on the middle-layer drawing plate side by side;

the inner sides of the two supporting walls of the base are respectively fixed with a first guide rail, and the two side edges of the middle layer drawing plate are respectively fixed with a second guide rail; wherein the second guide rail is arranged in the first guide rail and is matched with the first guide rail;

a plurality of groups of third guide rails are fixed on the middle-layer drawing plate and are arranged side by side transversely along the middle-layer drawing plate, wherein an optical fiber module box is arranged between every two adjacent groups of third guide rails;

the first guide rail is of a concave structure, and a first guide rail groove is formed in the first guide rail; the front end of the first guide rail is provided with a first limit groove, and the rear end of the first guide rail is provided with a second limit groove;

the second guide rail is of a T-shaped structure and is arranged in the first guide rail groove of the first guide rail; the front end of the second guide rail is provided with a first groove, and a first limiting block is arranged above the first groove; the rear end of the second guide rail is provided with a second groove, and a second limiting block is arranged above the second groove;

the optical fiber module box consists of a bottom cover and an upper cover arranged above the bottom cover, and a fiber melting device, an adapter plug and an optical cable fixing seat are arranged in the optical fiber module box; guide arms are respectively arranged on the outer sides of the two side walls of the bottom cover, and a third limit groove is formed in the middle of each guide arm; the front end of the bottom cover bottom plate is provided with 6 groups of first mounting grooves, wherein an LC adapter or an MPO adapter and an MTP adapter are mounted in each first mounting groove; the rear end of the bottom cover is provided with 6 groups of second mounting grooves which have the same structure as the first mounting grooves and are symmetrical in position, wherein each second mounting groove is internally provided with an MPO adapter or an MTP adapter; limiting side plates are respectively fixed at two side edges of the second mounting groove, the limiting side plates and the bottom cover are integrally formed, and each limiting side plate is provided with a first clamping groove and a second clamping groove respectively;

the first mounting groove and the second mounting groove are of a concave structure, wherein a height difference of 0.4-0.7 mm is arranged between the first mounting groove and the bottom plate of the bottom cover, and a height difference of 0.4-0.7 mm is arranged between the second mounting groove and the bottom plate of the bottom cover, so that the size and the height of the optical fiber module box are ensured; the two side walls of the bottom plate of the bottom cover extend towards the front end of the first mounting groove, a wire arranging handle is arranged at the extending end of the bottom plate, and reinforcing ribs are arranged on the wire arranging handle;

the fiber melting device can directly perform fiber melting operation in the fiber module box.

2. The layered drawing structure according to claim 1, wherein the first limiting groove and the second limiting groove form a fastening structure with the first limiting block and the second limiting block respectively so as to limit the longitudinal movement of the second guide rail in the first guide rail.

3. The layered drawing structure according to claim 1, wherein the third guide rails are of a non-type structure, 5 groups of the third guide rails are arranged on the middle layer drawing plate at equal intervals, and 3 groups of second guide rail grooves are formed in each group of third guide rails; and a third limiting block is arranged in the middle of each second guide rail groove.

4. The layered drawing structure according to claim 1, wherein the guide arm is disposed in the second guide rail groove, and wherein a third limit groove on the guide arm is matched with a third limit block in the second guide rail groove.

5. The layered drawing structure is characterized by comprising a base, a primary drawing plate, a secondary drawing plate, a tertiary drawing plate and an optical fiber module box; the base consists of a bottom plate and supporting walls arranged on two sides of the bottom plate to form a U-shaped cavity structure, wherein a primary drawing plate, a secondary drawing plate and a tertiary drawing plate are arranged in the cavity of the base, and an upper cover is arranged at the upper end of the base; the primary drawing plate, the secondary drawing plate and the tertiary drawing plate are sequentially arranged above and below the base cavity, wherein 4 optical fiber module boxes are arranged on each primary drawing plate side by side;

a fourth guide rail is fixed on the inner sides of the two supporting walls of the base, and a first-stage guide rail groove, a second-stage guide rail groove and a third-stage guide rail groove are formed in the fourth guide rail; the two sides of the primary drawing plate are fixedly provided with primary guide rails, the two sides of the secondary drawing plate are fixedly provided with secondary guide rails, the two sides of the tertiary drawing plate are fixedly provided with tertiary guide rails, wherein the primary guide rails are arranged in primary guide rail grooves, the secondary guide rails are arranged in secondary guide rail grooves, and the tertiary guide rails are arranged in tertiary guide rail grooves;

5 groups of fifth guide rails are respectively fixed on the primary drawing plate, the secondary drawing plate and the tertiary drawing plate, wherein an optical fiber module box is arranged between two adjacent groups of fifth guide rails on each primary drawing plate;

the optical fiber module box consists of a bottom cover and an upper cover arranged above the bottom cover, and a fiber melting device, an adapter plug and an optical cable fixing seat are arranged in the optical fiber module box; guide arms are respectively arranged on the outer sides of the two side walls of the bottom cover, and a third limit groove is formed in the middle of each guide arm; the front end of the bottom cover bottom plate is provided with 6 groups of first mounting grooves, wherein an LC adapter or an MPO adapter and an MTP adapter are mounted in each first mounting groove; the rear end of the bottom cover is provided with 6 groups of second mounting grooves which have the same structure as the first mounting grooves and are symmetrical in position, wherein each second mounting groove is internally provided with an MPO adapter or an MTP adapter; limiting side plates are respectively fixed at two side edges of the second mounting groove, the limiting side plates and the bottom cover are integrally formed, and each limiting side plate is provided with a first clamping groove and a second clamping groove respectively;

the first mounting groove and the second mounting groove are of a concave structure, wherein a height difference of 0.4-0.7 mm is arranged between the first mounting groove and the bottom plate of the bottom cover, and a height difference of 0.4-0.7 mm is arranged between the second mounting groove and the bottom plate of the bottom cover, so that the size and the height of the optical fiber module box are ensured; the two side walls of the bottom plate of the bottom cover extend towards the front end of the first mounting groove, a wire arranging handle is arranged at the extending end of the bottom plate, and reinforcing ribs are arranged on the wire arranging handle;

the fiber melting device can directly perform fiber melting operation in the fiber module box.

6. A high-density fiber optic enclosure comprising the tiered drawer structure of any one of claims 1-5.