CN113791479A

CN113791479A - Case for optical fiber communication data center

Info

Publication number: CN113791479A
Application number: CN202111052055.3A
Authority: CN
Inventors: 扈士超; 徐东; 谢峥; 何健
Original assignee: T&S Communications Co Ltd
Current assignee: T&S Communications Co Ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2021-12-14

Abstract

A case for an optical fiber communication data center comprises a cover plate, a bottom frame, a pair of side walls and a tray structure, wherein the cover plate, the bottom frame and the side walls are enclosed to form a case inner space and form a case front end inlet, slide rails are arranged on the side walls, the tray structure is movably arranged on the slide rails so as to be capable of being fed into or drawn out of the case from the case front end inlet, and an MPO-LC module box is arranged on the tray structure. The case is high in capacity, high in space utilization rate and convenient to use, can meet the requirement of optical fiber wiring of a data center, is suitable for being configured into a 1U 19-inch standard case, is provided with a 36-core MPO-LC module box, and achieves miniaturization, high density, high performance, easy operation and easy maintenance.

Description

Case for optical fiber communication data center

Technical Field

The invention relates to the field of optical fiber communication, in particular to a case for an optical fiber communication data center.

Background

In order to adapt to the rapid development of optical fiber communication, a high-speed, high-density and miniaturized optical fiber connection mode becomes a development trend of optical fiber wiring of a data center. A high density, high performance, easy to operate, easy to maintain 19 inch cabinet becomes the key to the fiber routing of a data center. At present, the capacity of 1U of a conventional case is only 96 cores at most, and the development requirement of high-speed communication of a data center cannot be met.

It is to be noted that the information disclosed in the above background section is only for understanding the background of the present application and thus may include information that does not constitute prior art known to a person of ordinary skill in the art.

Disclosure of Invention

The primary object of the present invention is to overcome the above-mentioned drawbacks of the prior art and to provide a cabinet for a fiber optic data center.

In order to achieve the purpose, the invention adopts the following technical scheme:

a case for an optical fiber communication data center comprises a cover plate, a bottom frame, a pair of side walls and a tray structure, wherein the cover plate, the bottom frame and the side walls are enclosed to form a case inner space and form a case front end inlet, slide rails are arranged on the side walls, the tray structure is movably arranged on the slide rails so as to be capable of being fed into or drawn out of the case from the case front end inlet, and an MPO-LC module box is arranged on the tray structure.

Further:

the pair of side walls are formed by bending a part of the bottom frame upwards and then inwards, and the cover plate is fixed on the tops of the pair of side walls.

The pair of side walls are provided with a pair of hangers, and the front ends of the side walls are provided with optical cable inlet and outlet holes of a gourd-shaped opening structure.

The bottom frame is provided with a rear side bending flange at the rear end, the cover plate forms a downward bending part at the rear end, and the rear side bending flange is fixed with the downward bending part; preferably, a wire tying bridge for tying the wire is arranged on the surface of the bottom frame.

The front panel is connected to the front end of the bottom frame through a hinge, and a front end inlet of the case is rotatably opened and closed; preferably, the front panel and the cover plate are provided with a pressing and locking structure for locking the front panel; preferably, the front panel is made of transparent plastic material; preferably, a pair of protruding handles is provided to both left and right sides of the front panel.

The apron includes front shroud, middle apron and back shroud, the rear side of front shroud bend the portion with middle apron overlap joint, the front side of back shroud bend the portion with middle apron overlap joint, the rear side of back shroud is formed with the part of buckling downwards, the bottom of the part of buckling downwards has the ear of bending downwards to the bottom that the internal bending formed, is used for the overlap joint in order to prevent to sink on the underframe, the both sides of back shroud are formed with the ear of bending to the side, the ear overlap joint of bending to the side is in on the lateral wall, be used for the restriction the back shroud is removed from side to side.

The side wall is provided with a side edge bending concave structure at the rear end, and the side edge bending lug is lapped on the side edge bending concave structure.

The tray structure is provided with a mounting bracket or an adapter panel for mounting the MPO-LC module box; the two sides of the tray structure are matched with the sliding rails; preferably, the front end of the tray structure is provided with a protruding handle for drawing operation; preferably, a wire binding bridge for binding the wires is arranged on the surface of the tray structure.

The MPO-LC module box comprises a bottom box, a box cover plate arranged on the bottom box, an MPO adapter fixing plate arranged at the rear end of the bottom box, and an LC adapter fixing plate arranged at an opening at the front end of the bottom box, wherein a pair of buckles used for installing the MPO-LC module box on the case are arranged at the left side and the right side of the bottom box; preferably, the pair of buckles are staggered up and down, so that the buckles of the adjacent MPO-LC module boxes are installed in a staggered mode; preferably, the LC adapter fixing plate includes a first fixing plate and a second fixing plate each having a plurality of panes, the first fixing plate and the second fixing plate being connected to each other to form a hollow frame structure.

The MPO-LC module box is internally pre-connected with an MPO-LC jumper and an adapter, the MPO jumper is inserted into the rear end of the case, and the LC jumper is inserted into the front end of the case.

The invention has the following beneficial effects:

the invention provides a case for an optical fiber communication data center, which has high capacity, high space utilization rate and convenient use, can meet the optical fiber wiring requirement of the data center, is suitable for being configured into a 1U 19-inch standard case, is provided with a 36-core MPO-LC module box, and realizes miniaturization, high density, high performance, easy operation and easy maintenance.

Drawings

Fig. 1 is a schematic view of an external appearance structure of a chassis according to an embodiment of the present invention.

Fig. 2 is a schematic front structure diagram of a chassis according to an embodiment of the present invention.

Fig. 3 is a schematic view of a bottom frame structure according to an embodiment of the invention.

Fig. 4 is a schematic view of a hanger installation according to an embodiment of the present invention.

FIG. 5 is a schematic view of a front panel mount according to an embodiment of the present invention.

FIG. 6 is a schematic view of the protruding handles on the left and right sides of the front panel according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a front cover plate according to an embodiment of the invention.

FIG. 8 is a schematic diagram of the connection between the rear side of the front cover and the middle cover according to an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a rear cover plate according to an embodiment of the invention.

FIG. 10 is a schematic diagram of the connection between the rear cover and the box according to an embodiment of the present invention.

Fig. 11 is a schematic structural view of a tray with a mounting bracket according to an embodiment of the invention.

FIG. 12 is a schematic diagram of a tray with an adapter panel according to an embodiment of the present invention.

Fig. 13 is a schematic view illustrating the installation of the tray and the slide rail according to an embodiment of the invention.

Fig. 14 is a top and side view of an MPO-LC cartridge according to an embodiment of the present invention.

Fig. 15 is an exploded structural view of an MPO-LC cartridge according to an embodiment of the present invention.

Fig. 16 is an exploded view of an LC adapter fixing plate according to an embodiment of the present invention.

Fig. 17 is an assembled structure view of an LC adapter fixing plate according to an embodiment of the present invention.

Fig. 18 is a schematic view of an MPO-LC cassette with adapters mounted thereon according to an embodiment of the present invention.

Fig. 19 is a schematic front side view of a chassis with an MPO-LC module cartridge installed in accordance with an embodiment of the present invention.

Fig. 20 is a schematic view of a snap-on staggered mounting of an MPO-LC module cassette according to an embodiment of the present invention.

Fig. 21 is a rear side schematic view of a chassis with an MPO-LC module cartridge installed therein according to an embodiment of the present invention.

Fig. 22 is a schematic diagram of a wiring scheme of the whole device according to an embodiment of the invention.

Reference numerals:

the fastening device comprises a hanging lug 1, a front panel 2, a lock catch 3, a hinge 4, a front cover plate 5, a screw 6, a middle cover plate 7, a rear cover plate 8, a front dead end pressing edge 9 of a bottom frame, an optical cable access hole 10, a hanging lug mounting hole 11, a slide rail mounting screw hole 12, a side bending concave structure 13, a rear side bending retaining edge 14, a wire binding bridge 15, a projecting handle 16, a front dead end pressing edge 17 of the front cover plate 5, a rear side middle bending 18, a side bending lug 19, a bottom bending lug 20, a loosening screw 21, a front side middle bending 22, a slide rail mounting hole 23, a mounting bracket 24, a projecting handle 25, a tray wire binding bridge 26, an adapter panel 27, a slide rail 28, a box cover plate 29, an M3 screw 30, an MPO adapter fixing plate 31, an LC adapter fixing plate 32, a buckle 33, an M2 screw 34, a bottom box 35, a first fixing plate 36, a second fixing plate 37, an M2 screw hole 38, an MPO adapter 39, a four-gang LC short lug adapter 40, MPO inlet wire end 41, MPO-LC module box 42 and LC inlet wire end 43

Detailed Description

The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for either a fixed or coupled or communicating function.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 22, an embodiment of the present invention provides a chassis for a fiber optic data center, including a cover plate, a bottom frame, a pair of side walls, and a tray structure, where the cover plate, the bottom frame, and the side walls enclose an internal space of the chassis and form a front entrance of the chassis, the side walls are provided with slide rails 28, the tray structure is movably mounted on the slide rails 28 so as to be capable of being fed into or drawn out of the chassis from the front entrance of the chassis, and an MPO-LC module 42 is mounted on the tray structure.

In a preferred embodiment, the pair of side walls are formed by bending a portion of the bottom frame upwards and then bending the portion inwards, and the cover plate is fixed on top of the pair of side walls.

In a preferred embodiment, a pair of hanging lugs 1 are arranged on the pair of side walls, and a gourd-shaped optical cable access hole 10 is arranged at the front end of each side wall.

In a preferred embodiment, the bottom frame is provided with a rear side bending rib 14 at the rear end, the cover plate is provided with a downward bending part at the rear end, and the rear side bending rib 14 is fixed with the downward bending part; preferably, a wire tying bridge 15 for tying the wire is arranged on the surface of the bottom frame.

In a preferred embodiment, the chassis further comprises a front panel 2, wherein the front panel 2 is connected to the front end of the bottom frame through a hinge 4 to realize the rotary opening and closing of the front end inlet of the chassis; preferably, the front panel 2 and the cover plate are provided with a pressing lock catch structure, and the lock catch 3 is used for locking the front panel 2; preferably, the front panel 2 is made of transparent plastic material; preferably, a pair of protruding handles 16 are provided on both left and right sides of the front panel 2.

In a preferred embodiment, the cover plate comprises a front cover plate 5, a middle cover plate 7 and a rear cover plate 8, a middle bend 18 at the rear side of the front cover plate 5 is overlapped with the middle cover plate 7, a middle bend 22 at the front side of the rear cover plate is overlapped with the middle cover plate 7, a downward bending part is formed at the rear side of the rear cover plate 8, a bottom bending lug 20 formed by inward bending is arranged at the bottom of the downward bending part and is used for being overlapped on the bottom frame to prevent sinking, side bending lugs 19 are formed at two sides of the rear cover plate 8, and the side bending lugs 19 are overlapped on the side walls and are used for limiting the rear cover plate 8 from moving left and right.

In the preferred embodiment, the side walls are provided at the rear end with side bending recesses 13, and the side bending lugs 19 overlap the side bending recesses 13.

In a preferred embodiment, the tray structure is provided with a mounting bracket 24 or adapter panel 27 for mounting the MPO-LC module cassette 42; the two sides of the tray structure are matched with the slide rails 28; preferably, the front end of the tray structure is provided with a protruding handle 25 for the drawing operation; preferably, a cable tie bridge 26 for tying the cables is provided on the surface of the tray structure.

In a preferred embodiment, the MPO-LC module cassette 42 includes a bottom cassette 35, a cassette cover plate disposed on the bottom cassette 35, an MPO adapter 39 fixing plate 31 disposed at the rear end of the bottom cassette 35, and an LC adapter fixing plate 32 disposed at the front opening of the bottom cassette 35, and a pair of buckles 33 disposed on the left and right sides of the bottom cassette 35 for mounting the MPO-LC module cassette 42 on the chassis; preferably, the pair of latches 33 are staggered in position to provide a staggered arrangement of the latches 33 of adjacent MPO-LC module cassettes 42; preferably, the LC adapter fixing plate 32 includes a first fixing plate 36 and a second fixing plate 37 each having a plurality of panes, and the first fixing plate 36 and the second fixing plate 37 are coupled to each other to form a hollow frame structure.

In a preferred embodiment, the MPO-LC module box 42 is internally pre-connected with MPO-LC jumpers and adapters, the MPO jumper lead-ins are inserted into the rear end of the chassis, and the LC jumper lead-ins are inserted into the front end of the chassis.

The case for the optical fiber communication data center provided by the embodiment of the invention has the advantages of high capacity, high space utilization rate and convenience in use, can meet the optical fiber wiring requirement of the data center, is suitable for being configured into a 1U 19-inch standard case, is provided with a 36-core MPO-LC module box, and realizes miniaturization, high density, high performance, easiness in operation and easiness in maintenance.

Specific embodiments of the present invention are further described below.

A 1U19 inch cabinet solution includes a 1U19 inch standard cabinet, a 36 core MPO-LC module box 42.

1U19 inch installation standard cabinet

Fig. 1 is a schematic view of an external appearance structure of a chassis according to an embodiment of the present invention. As in fig. 1, the chassis size: 440 x 325 x 44 mm. Fig. 2 is a schematic front structure diagram of a chassis according to an embodiment of the present invention. The hanger 1 adopting the 19-inch standard is installed in the cabinet and occupies 1U space, the horizontal center spacing of the hanger 1 is 465mm, the vertical center spacing is 31.75mm, and the outermost side spacing of the hanger 1 is 480 mm.

Bottom frame

Fig. 3 is a schematic view of a bottom frame structure according to an embodiment of the invention. The bottom frame adopts high-quality steel sheet of 1.2mm thickness, stable in structure, pleasing to the eye reliable.

The bottom frame adopts the structure that the dead limit 9 is pressed to the front end, multiplicable product structural strength improves whole plane degree.

The bottom frame is provided with an optical cable inlet and outlet hole 10, and a gourd-shaped opening structure is adopted to prevent the cable from jumping out.

The hanging lug mounting holes 11 are formed, 4 hanging lugs are arranged on each side, and the hanging lug mounting holes are mounted on the inner sides, so that the box body can be mounted on the rack more smoothly.

Set up slide

rail installation screw

12, 2 on every side, adopt the through-hole to press and rivet nut post, it is firm reliable.

A lateral bending recess structure 13 is provided for restraining the rear cover panel 8 to prevent the rear cover panel 8 from shaking left and right (see fig. 10).

The rear side bending flange 14 is arranged to increase the structural strength of the product, and 2 screw holes are formed to fix the rear cover plate 8 (see fig. 10).

The cable tie bridge 15 is arranged and used for wiring, routing and cable tie, and can be used in combination with a cable tie and a magic ribbon.

Hanging loop

Fig. 4 is a schematic view of the installation of the suspension loop 1 according to an embodiment of the present invention. The hanging lugs 1 are arranged on two sides of the case, and an inner side mounting mode is adopted, so that the case body is smoother to mount the rack.

Front panel

Fig. 5 is a schematic view of the installation of the front panel 2 according to an embodiment of the present invention.

The front panel 2 can be installed through a 1-inch hinge 4 and can be opened and closed in a 270-degree rotating mode. And is locked with the front panel 2 by pressing the lock catch.

The front panel 2 is made of transparent plastic material (PC or acrylic) and can observe the situation in the case.

Fig. 6 is a schematic view of the protruding handles 16 on the left and right sides of the front panel 2 according to an embodiment of the present invention. The left and right sides of the front panel 2 are provided with protruding handles 16 for the user to open and close conveniently.

Blind flange (front blind flange, middle blind flange, back blind flange)

The front cover 5 and the middle cover 7 are mounted by M3 countersunk head screws (see fig. 1), and can be detached using a screwdriver.

Fig. 7 is a schematic structural diagram of the front cover plate 5 according to an embodiment of the present invention. The front end of the front cover plate 5 is subjected to a dead-end pressing treatment to form a front dead-end pressing edge 17 (see fig. 7), so that the integral flatness is ensured. The middle part of the rear side of the front cover plate 5 is subjected to sheet metal bending treatment, so that the middle bending 18 of the rear side is in lap joint with the middle cover plate 7 (see fig. 8), and the flatness of the middle cover plate 7 is ensured.

Fig. 8 is a schematic diagram illustrating the overlapping of the rear side of the front cover 5 and the middle cover 7 according to an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of the rear cover plate 8 according to an embodiment of the present invention. The back cover plate 8 is mounted by two loose non-removable screws 21 (see fig. 9) and can be easily removed by hand. The middle of the front side of the rear cover plate 8 is subjected to a sheet metal bending process, and the middle of the front side 22 is overlapped with the middle cover plate 7.

Fig. 10 is a schematic diagram of the lap joint of the rear cover plate 8 and the box body according to an embodiment of the invention. The bottom bending lugs 20 overlap the plane of the tank to prevent the parts from sinking (see figure 10). The side bending lugs 19 overlap the sides of the box to prevent the parts from rocking side to side (see figure 10).

Tray structure

Fig. 11 is a schematic view of a tray structure with a mounting bracket 24 according to an embodiment of the present invention. Mounting brackets 24 for securing the cartridge are mounted using screws 6. To facilitate disassembly, the mounting bracket 24 may be replaced with an adapter panel 27. Fig. 12 is a schematic view of a tray structure with an adapter panel 27 according to an embodiment of the present invention.

The tray structure can be provided with a protruding handle 25, which facilitates the drawing in operation.

The tray structure can set up ligature bridge 26 for wiring, walking the line ligature, can combine line ligature, magic ribbon to use.

The tray structure may be provided with a slide mounting hole 23 for mounting and fixing the inner slide 28.

Sliding rail

Fig. 13 is a schematic view illustrating the installation of the tray and the slide rail according to an embodiment of the invention. Three-section sliding rails 28 with the length of 150 x 35 x 12.7mm are adopted, the drawing is smooth, and the stroke range is 0-150 mm.

36-core MPO-LC modular box

Fig. 14 is a top and side view of an MPO-LC module cassette 42 according to one embodiment of the present invention. As shown in fig. 14, the product is made of aluminum plate, and is light and beautiful, and the module box has the following dimensions: 136.5 × 92.6 × 35.4 mm.

Fig. 15 is an exploded structural view of an MPO-LC module cassette 42 according to an embodiment of the present invention. Referring to fig. 15, the cover and MPO adapter panels are mounted by M3 screws 30. The LC adapter panel is mounted by M2 screws 34.

LC adapter fixing plate

Fig. 16 is an exploded view of the LC adapter fixing plate 32 according to an embodiment of the present invention. The LC adapter fixing plate 32 includes a first fixing plate 36 and a second fixing plate 37 (see fig. 16), which are laser-welded together (see fig. 17). Fig. 17 is an assembled structure view of the LC adapter fixing plate 32 according to an embodiment of the present invention. The side is provided with M2 screw holes 38, and the M2 screws 34 are used for fixing on the bottom box 35 (see figure 17).

The panel can be designed and installed with different adapters according to different requirements, such as duplex LC, SC and the like.

Adapter and buckle

Fig. 18 is a schematic view of an MPO-LC module cassette 42 with adapters mounted thereon according to an embodiment of the present invention.

The front end of the module box is provided with 9 quadruple LC short-lug adapters 40, the rear end is provided with 3 MPO adapters 39, and the adapters are fixed firmly and reliably by adopting a double-layer fixing mode. 2 plastic buckles 33 are installed, so that the module box can be installed on the case, and the case is convenient to disassemble and assemble.

Assembly of chassis and modular case

Module box installation

The 19 inch cabinet is installed in standard mode and is applied to data center network distribution. Fig. 19 is a front side schematic view of a chassis with an installed MPO-LC module box 42 in accordance with an embodiment of the present invention. A 1U chassis may mount 4 36-core MPO-LC module cassettes 42 (see fig. 19), for a total assembly core count 144. Fig. 20 is a schematic view showing the staggered mounting of the snaps 33 of the MPO-LC module cassette 42 according to one embodiment of the invention. The modular boxes are installed in a staggered mode (see fig. 20), and the space of the chassis is greatly saved. The tray is drawn out, and the front end LC end can be directly wired.

Rear wiring of case

Fig. 21 is a rear side schematic view of a cabinet in which an MPO-LC module box 42 is installed according to an embodiment of the present invention. The rear cover plate of the case can be freely disassembled through the release screw, and the rear cover plate can be directly disassembled to perform wiring operation at the rear end.

Complete machine wiring scheme

Fig. 22 is a schematic diagram of a wiring scheme of the whole device according to an embodiment of the invention. The module box is a core part, MPO-LC jumpers and adapters are pre-connected inside the module box, 12-core MPO jumpers are inserted into the rear end of the case for introduction, and LC jumpers are inserted into the front end of the case for introduction.

The background of the present invention may contain background information related to the problem or environment of the present invention and does not necessarily describe the prior art. Accordingly, the inclusion in the background section is not an admission of prior art by the applicant.

The foregoing is a more detailed description of the invention in connection with specific/preferred embodiments and is not intended to limit the practice of the invention to those descriptions. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the invention, and these substitutions and modifications should be considered to fall within the scope of the invention. In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the claims.

Claims

1. A case for an optical fiber communication data center is characterized by comprising a cover plate, a bottom frame, a pair of side walls and a tray structure, wherein the cover plate, the bottom frame and the side walls are enclosed to form a case inner space and form a case front end inlet, slide rails are arranged on the side walls, the tray structure is movably arranged on the slide rails so as to be capable of being fed into or drawn out of the case from the case front end inlet, and an MPO-LC module box is arranged on the tray structure.

2. A cabinet according to claim 1, wherein the pair of side walls are formed by bending a portion of the bottom frame upward and then bending the portion inward, and the cover plate is fixed to tops of the pair of side walls.

3. The cabinet of claim 1 or 2, wherein a pair of hanging lugs are arranged on the pair of side walls, and the front ends of the side walls are provided with optical cable access holes of a gourd-shaped opening structure.

4. A cabinet according to any one of claims 1 to 3, wherein the bottom frame is provided at a rear end with a rear bent rib, and the cover is formed at a rear end with a downward bent portion, the rear bent rib being fixed to the downward bent portion; preferably, a wire tying bridge for tying the wire is arranged on the surface of the bottom frame.

5. A cabinet according to any one of claims 1 to 4, further comprising a front panel, the front panel being connected to the front end of the bottom frame by a hinge to realize rotary opening and closing of the front inlet of the cabinet; preferably, the front panel and the cover plate are provided with a pressing and locking structure for locking the front panel; preferably, the front panel is made of transparent plastic material; preferably, a pair of protruding handles is provided to both left and right sides of the front panel.

6. The chassis according to any one of claims 1 to 5, wherein the cover plates include a front cover plate, a middle cover plate, and a rear cover plate, a rear bent portion of the front cover plate overlaps the middle cover plate, a front bent portion of the rear cover plate overlaps the middle cover plate, a downward bent portion is formed at a rear side of the rear cover plate, a bottom of the downward bent portion has a bottom bending lug formed by inward bending for overlapping the bottom frame to prevent sinking, side bending lugs are formed at two sides of the rear cover plate, and the side bending lugs overlap the side walls for limiting the rear cover plate from moving left and right.

7. The chassis of claim 6, wherein the side walls are provided with side bend recesses at the rear ends, and the side bend ears overlap the side bend recesses.

8. The chassis of any of claims 1 to 7, wherein the tray structures are provided with mounting brackets or adapter panels for mounting the MPO-LC module boxes; the two sides of the tray structure are matched with the sliding rails; preferably, the front end of the tray structure is provided with a protruding handle for drawing operation; preferably, a wire binding bridge for binding the wires is arranged on the surface of the tray structure.

9. The chassis according to any one of claims 1 to 8, wherein the MPO-LC module box comprises a bottom box, a box cover plate arranged on the bottom box, an MPO adapter fixing plate arranged at the rear end of the bottom box, and an LC adapter fixing plate arranged at the front end opening of the bottom box, and a pair of buckles for mounting the MPO-LC module box on the chassis are arranged at the left and right sides of the bottom box; preferably, the pair of buckles are staggered up and down, so that the buckles of the adjacent MPO-LC module boxes are installed in a staggered mode; preferably, the LC adapter fixing plate includes a first fixing plate and a second fixing plate each having a plurality of panes, the first fixing plate and the second fixing plate being connected to each other to form a hollow frame structure.

10. The chassis of any one of claims 1 to 9, wherein MPO-LC module boxes are internally pre-connected with MPO-LC jumpers and adapters, wherein MPO jumper introductions are inserted into the rear end of the chassis, and LC jumper introductions are inserted into the front end of the chassis.