CN110703864A

CN110703864A - Plug-in box and communication equipment

Info

Publication number: CN110703864A
Application number: CN201810745397.5A
Authority: CN
Inventors: 赵保周
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-07-09
Filing date: 2018-07-09
Publication date: 2020-01-17

Abstract

The embodiment of the invention provides an inserting box and communication equipment, wherein the inserting box comprises an inserting box main body, a middle back plate, a switching circuit board and an inner frame, wherein the front end of the inserting box main body is provided with an opening; the inner frame can be inserted into or pulled out of the plug box main body through the opening, the accommodating cavity is positioned in the plug box main body when the inner frame is inserted into the plug box main body, and the accommodating cavity is positioned outside the plug box main body when the inner frame is pulled out of the plug box main body; the main body of the plug box is provided with a main frame structure, the main frame structure is provided with a plurality of plug holes, and the main frame structure is provided with a plurality of plug holes.

Description

Plug-in box and communication equipment

Technical Field

The invention relates to the technical field of servers, in particular to a plug-in box and communication equipment.

Background

With the rapid development of internet technology, the traditional way of implementing storage by a single hard disk cannot meet the corresponding storage requirements, especially for large enterprises, companies and users with large individual storage requirements. Therefore, the scheme of realizing the hard disk array by jointly storing a plurality of hard disks well solves the problems.

As shown in fig. 1, fig. 1 is a typical structure of a conventional hard disk insert box, where the hard disk insert box 10 includes, from outside to inside, a box body 11, a mother frame 12, and a child frame 13 in sequence, where the child frame 13 is provided with a plurality of hard disk slots, and hard disks can be inserted into and pulled out of the hard disk slots, and are electrically connected to each hard disk through a hard disk backplane to implement a hard disk array; the sub-frame 13 can be pulled out of the main frame 12 or inserted into the main frame 13. The main frame 12 is mainly used for accommodating the sub-frame 13 for the sub-frame 13 to be plugged and unplugged, and is further provided with a switching board for switching a hard disk backboard signal of the sub-frame 13 to a backboard on the box body 11. Under normal conditions, the subframe 13 is locked on the mother frame 12, the mother frame 12 is also locked on the box body 11, when the hard disk needs to be maintained, the subframe 13 and the mother frame 12 can be unlocked, the mother frame 12 is pulled out from the box body 11, the subframe 12 is pulled out from the mother frame 13, then the hard disk is pulled out from the subframe 13 or a new hard disk is inserted, and online maintenance operation is realized.

As can be seen from fig. 1, the hard disk insertion box 10 is a double-layer insertion and extraction structure of a sub-frame and a main frame, when the sub-frame is inserted into the box body 11 together, the main frame needs to be locked on the box body 11, when the sub-frame 13 is inserted into the main frame 12, the sub-frame 13 also needs to be locked on the main frame 12, when the main frame 12 is pulled out of the box body 11, the sub-frame 11 needs to be kept in a fixed state with the main frame 12, when the sub-frame 13 is pulled out of the main frame 12, the main frame 12 and the box body 11 also need to be kept in a fixed state; meanwhile, the primary and secondary frames of the double-layer plug-in structure occupy a large space in the box body 11, and are unfavorable for capacity expansion of the number of hard disks; in addition, when the hard disk needs to be maintained online, the sub-frame needs to be pulled out, the occupied external space is large, and therefore the requirement on the use site is relatively high.

Disclosure of Invention

The plug box and the communication equipment provided by the embodiment of the invention mainly solve the technical problems that: the existing subrack scheme has a complex structure and occupies a large space.

To solve the above technical problem, an embodiment of the present invention provides an insert box, including: the plug box comprises a plug box main body, a middle back plate, a switching circuit board and an inner frame, wherein an opening is formed in the front end of the plug box main body, the middle back plate and the switching circuit board are arranged in the plug box main body, the inner frame is provided with at least two accommodating cavities for accommodating target equipment, ports for connecting with the target equipment are arranged in the accommodating cavities, the inner frame is provided with a functional circuit board connected with the ports, and the functional circuit board is connected with the middle back plate through the switching circuit board; the inner frame can be inserted into or pulled out of the inserting box main body through the opening, the accommodating cavity is located in the inserting box main body when the inner frame is inserted into the inserting box main body, and the accommodating cavity is located outside the inserting box main body when the inner frame is pulled out of the inserting box main body.

The embodiment of the invention also provides communication equipment comprising any plug box provided by the embodiment of the invention.

The invention has the beneficial effects that:

according to the plug-in box and the communication equipment provided by the embodiment of the invention, the plug-in box comprises a plug-in box main body, a middle back plate, a switching circuit board and an inner frame, wherein an opening is formed in the front end of the plug-in box main body; the inner frame can be inserted into or pulled out of the plug box main body through the opening, the accommodating cavity is positioned in the plug box main body when the inner frame is inserted into the plug box main body, and the accommodating cavity is positioned outside the plug box main body when the inner frame is pulled out of the plug box main body; the existing double-layer plugging sub-frame structure is converted into a single-layer plugging structure, so that the occupation of the internal space of the plug box main body is saved, the inner frame is directly plugged in the plug box main body, and when a hard disk array arranged on the inner frame needs to be overhauled, the inner frame only needs to be directly pulled out of the plug box main body, so that the hard disk can be maintained or replaced on line; the structure is simpler, the realization is easy, and the structural stability is good.

Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic diagram of a structure of a plug-in box with a double-layer plug-in structure;

fig. 2 is a schematic structural diagram of an insert box according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a middle backplane according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of an adapter circuit board according to a first embodiment of the invention;

FIG. 5 is an enlarged schematic structural view of a guiding element and a fixing element according to a first embodiment of the invention;

fig. 6 is an enlarged schematic structural view of the sliding portion and the fixing portion according to the first embodiment of the invention;

fig. 7 is a schematic structural view of a middle backplane and a transition circuit board according to a first embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a fold line frame according to a first embodiment of the present invention;

fig. 9 is a schematic structural view of a plug box in a pulled-out state according to a first embodiment of the present invention;

FIG. 10 is a schematic view of a drag chain structure according to a first embodiment of the present invention;

fig. 11 is a schematic view of an inner frame structure according to a first embodiment of the present invention;

FIG. 12 is a schematic view of another structure of a plug-in box according to a first embodiment of the present invention;

FIG. 13 is a schematic assembly flow chart according to a first embodiment of the present invention;

fig. 14 is a schematic structural diagram of a middle backplane and an adapter circuit board according to a second embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The first embodiment is as follows:

in order to solve the problems that the existing plug-in box is complex in structure, difficult to manufacture, large in occupied space and not beneficial to improving the storage capacity, the embodiment of the invention provides the plug-in box, which mainly converts the existing double-layer plug-in sub-frame structure into a single-layer plug-in structure so as to save the occupation of a plug-in module on the internal space of a plug-in box main body, so that an inner frame is directly plugged in the plug-in box main body, and when a hard disk array arranged on the inner frame needs to be maintained, the hard disk can be maintained or replaced on line only by directly pulling out the inner frame from the plug-in box main body; the structure is simpler, the realization is easy, and the structural stability is good.

Referring to fig. 2, fig. 2 is a schematic view of a structure of an insert box according to an embodiment of the present invention, the insert box 20 includes an insert box main body 21, a middle back plate 22, a switching circuit board 23, and an inner frame 24, wherein an opening is formed at a front end of the insert box main body 21, the middle back plate 22 and the switching circuit board 23 are disposed in the insert box main body 21, the inner frame 24 is provided with at least two accommodating cavities 241 for accommodating a target device, a port (not shown) is disposed in each accommodating cavity 241 for connecting with the target device, the inner frame 24 is provided with a function circuit board 242 connected with each port, and the function circuit board 242 is connected with the middle back plate 22 through the switching circuit board; the inner frame 24 can be inserted into the box body 21 or pulled out of the box body 21 through the opening, the accommodating cavity 241 is positioned in the box body 21 when the inner frame 24 is inserted into the box body 21, and the accommodating cavity 241 is positioned outside the box body 21 when the inner frame 24 is pulled out of the box body 21.

It should be understood that the insertion and removal of inner casing 24 from the main box body 21 may be accomplished by conventional slide assemblies, such as ball slides.

In the embodiment of the present invention, the functional circuit board 242 disposed on the inner frame 24 can be electrically connected to the adapting circuit board 23 through a cable, the length of the cable should meet the plugging and unplugging requirement of the inner frame 24, that is, the cable is pulled out when the inner frame 24 is pulled out from the plug box main body 21, and the length of the cable should meet the length required when the accommodating cavity 242 disposed on the inner frame 24 is located outside the plug box main body 21, so as to implement online maintenance operation.

In the embodiment of the present invention, the inserting box main body 21 includes a cavity or a space for accommodating the inner frame 24, and only one cavity is included, that is, only one inner frame 24 is disposed on the inserting box 20, and a plurality of accommodating cavities for accommodating the target device are disposed on the inner frame 24, so as to avoid the problem that a plurality of inner frame structures are disposed in the inserting box main body, and the material thickness (generally 2mm) of the inner frame body occupies a certain inner space of the inserting box main body, so that more accommodating cavities can be disposed in a unit space for expansion. It should be appreciated that the size of the cavity should match the size of inner frame 24, i.e., inner frame 24 may be inserted or stretched just within the cavity.

It should be noted that, usually, one functional circuit board 242 needs to be arranged on one inner frame 24, and this scheme is equivalent to combining a plurality of inner frames into one inner frame, so that the number of functional circuit boards 242 is reduced, the number of components is also reduced due to the combination of the driving circuits, and thus the cost is greatly saved.

This scheme is direct to carry out the plug with inside casing 24 setting in subrack main part 21, cancel the setting structure of the female frame of current subrack, also be that to change double-deck plug structure into individual layer plug structure, when guaranteeing to realize target equipment online maintenance, the subrack structure has been simplified, be favorable to reducing the degree of difficulty and manufacturing cost in the generation is made, in subrack in-service use process, for example, extract the inside casing from the subrack main part, the inside casing also can be littleer to the occupation of outside space, therefore it is more convenient in the aspect of the equipment maintenance.

Referring to fig. 3, the mid-back panel 22 includes a bearing bracket portion 221 and a control circuit portion 222, which are fixedly connected, and the bearing bracket portion 221 is fixed at the rear end of the box main body 21 by means of screws, clamping, welding, and the like, so as to integrally fix the mid-back panel 22. The control circuit portion 222 further includes an interface 2221 electrically connected to the relay circuit board 23. In other examples of the present invention, the interface 2221 may protrude from the rear end of the box main body 21 to be connected to an external circuit.

Referring to fig. 4, the adapting circuit board 23 includes a fixedly connected carrier substrate portion 231 and an adapting circuit portion 232, and the adapting circuit portion 232 is used for adapting communication signals between the function circuit board 242 and the control circuit portion 222. The adapting circuit board 23 is fixedly connected to the middle back plate 22, which can be realized by the supporting substrate portion 231 and the supporting bracket portion 221 of the middle back plate 22, and when the supporting substrate portion 231 and the supporting bracket portion 221 are in a fixed connection state, the adapting circuit portion 232 is electrically connected to the control circuit portion 221. For example, the patch circuit part 232 is provided with a plug structure, a jack structure is provided at a position corresponding to the plug structure on the control circuit part, and when the patch circuit board 23 is fixedly connected to the supporting bracket part 221 of the mid-back panel 22 through the supporting substrate part 231 thereof, the plug structure of the patch circuit part 232 is just inserted into the jack structure of the control circuit part, so as to realize the electrical connection between the patch circuit board 23 and the mid-back panel 22, and further realize the communication signal transfer between the functional circuit board 242 of the inner frame 24 and the mid-back panel 22.

As for the fixing and connecting structure between the middle back plate 22 and the relay circuit board 23, as shown in fig. 3 and fig. 4, the carrying bracket portion 221 of the middle back plate 22 is provided with a pair of guiding members 2211 and a pair of fixing members 2212, the pair of guiding members 2211 are respectively provided on the left and right side plates of the carrying bracket portion 221, the guiding members 2211 are formed by inward sheet metal stamping of the left and right side plates, and the pair of guiding members 2211 are opposite to each other on the left and right side plates.

The guiding member 2211 is used for inserting and guiding the adapting circuit board 23 to realize a detachable fixed connection between the adapting circuit board 23 and the middle backplane 22, and of course, in other examples of the present invention, the fixed connection between the adapting circuit board 23 and the middle backplane 22 is realized by any conventional method, which is not limited herein.

To better understand the detachable connection structure between the adapting circuit board 23 and the middle back plate 22 provided in this embodiment, please refer to fig. 5, fig. 5 is a partially enlarged schematic view of the guide 2211 and the fixing element 2212 on the left side (corresponding to the right side) of the supporting bracket portion 221, the guide 2211 is a step protruding toward the inside of the main body 21 of the plug box (or toward the right side of the supporting bracket portion 221), two sides of the step further include upward arc-shaped curved surfaces, the thickness of the arc-shaped curved surfaces is equal to the thickness of the step, and the depth of the arc-shaped curved surfaces is equal to the protruding width of the step, so as to form a smooth guide surface, which facilitates the insertion and guiding of the adapting circuit board 23. Inserted in correspondence with the guide 2211 is a sliding portion 2311 provided on the left side of the carrying substrate portion 231, the sliding portion 2311 is the left end portion of the carrying substrate portion 231 (the right end portion of the carrying substrate portion is inserted in cooperation with the right guide), please refer to fig. 6, fig. 6 is a partially enlarged view of the sliding portion 2311 of the carrying substrate portion 231 and the fixing portion 2312, when the relay circuit board 23 is inserted into the middle-positioned backplane 22, the upper plane of the left end portion contacts with the guide surface, the upper surface first contacts with the arc-shaped curved surface of the guide, the arc-shaped curved surface guides the insertion of the upper surface, when the insertion reaches a certain degree, the upper surface contacts with the lower surface of the step of the guide 2211 until the end portion of the carrying substrate portion 231 is inserted into the fixing position, at this time, the fixing portion 2312 just slides to the position of the fixing member 2212, thereby forming a lock with the fixing member 2212, and realizing the fixed connection between the adapter circuit board 23 and the middle back plate 22.

With regard to the fixing member 2212 structure of the middle back plate 22, please refer to fig. 5, it may be a groove or a hole protruding to the outside of the main box body 21 (or to the left direction of the supporting bracket portion 221), and the hole may be a square hole. The fixing part 2312 arranged on the left side of the bearing base plate part 231 is correspondingly matched with the fixing part 2212, the fixing part 2312 arranged on the right side of the bearing base plate part 231 is correspondingly matched with the right fixing part 2212, the left fixing part 2312 is an arc-shaped protrusion outwards arranged on the left side of the bearing base plate part 231, in the process that the sliding part 2311 is inserted and guided through the guide part 2211, the arc-shaped protrusion is driven to move towards the bearing base plate part 231 by the pressure on the left side and the right side of the bearing support part 221, and when the sliding part 2311 is inserted into a fixed position, the arc-shaped protrusion returns to be matched and fixed with the fixing part 2212. It should be understood that the guides 2211 correspondingly arranged on the left side and the right side have the same shape and specification and are opposite in position; the fixing pieces 2212 correspondingly arranged on the two sides of the left side have the same shape and specification and are opposite in position; the sliding parts 2311 correspondingly arranged on the left side and the right side have the same shape and specification and are opposite in position; the fixing parts 2312 correspondingly arranged on the left side and the right side have the same shape and specification and are opposite in position; and thus will not be described in detail.

The adapting circuit board 23 may also be made into a daughter card form, and fixedly connected to the midplane 22, please refer to fig. 7, that is, the adapting circuit board 23 is directly mounted on the midplane 22, and the adapting circuit board 23 exists as a sub-component of the midplane 22.

In other examples of the present invention, the rear end of the box main body 21 has an opening, and the control circuit portion 222 includes an interface connected to the relay circuit portion 231, and the interface is electrically connected to an external circuit extending out of the rear end of the box main body 21. External circuits include, but are not limited to, motherboard circuitry, a communication bus, and the like.

In the embodiment of the present invention, the functional circuit board 242 and the adapter circuit portion 232 are connected by the routing assembly 25, the routing assembly 25 includes a supporting frame 251 and a cable, the cable is fixedly disposed on the supporting frame 251 and is used for electrically connecting the functional circuit board 242 and the adapter circuit portion of the adapter circuit board 23, one end of the supporting frame 251 is fixedly connected with the inner frame 24, and the other end is fixedly connected with the plug box main body 21, so as to adapt to the insertion and extraction operations of the inner frame 24 relative to the plug box main body 21. The supporting frame 251 may be a wire folding frame as shown in fig. 8, the wire folding frame includes a plurality of links 2511, and fig. 8 includes three links 2511, in this embodiment, the links may be bent by metal plates, each link 2511 is provided with a hole 2512 for binding cables, the links 2511 are connected in series and are riveted on the rotating shaft 2513 in turn, two ends of the links at two ends of the wire folding frame are respectively provided with a fixing structure 2514, wherein the fixing structure 2514 at one end is used for being fixedly connected with the inner frame 24, and performs a winding movement along with the insertion and extraction of the inner frame 24, and the fixing structure 2514 at the other end is used for being fixedly connected with the box inserting main body 21 and keeping a fixed position with the box inserting main body 21. After the cable plate is tied on the chain 2511, the cable can be protected from being torn off when the inner frame 24 is pulled out from the plug box main body 21, and fig. 9 is a schematic structural diagram of the inner frame 24 when being pulled out from the plug box main body 21. When the inner frame 24 is inserted into the box body 21, the folding is contracted along with the rotation between the chain of the broken line frame, and enough space is reserved for the insertion of the inner frame.

The supporting frame 251 can also adopt a drag chain structure as shown in fig. 10, the cable is clamped in a groove of the drag chain for protection, and the drag chain stretches the movement of the cable for limiting protection. The detailed process is not described herein.

Referring to fig. 11, the rear end of the inner frame 24 is provided with a function circuit board 242 for connecting with a target device inserted into the accommodating cavity 241. The accommodating chamber 241 is a frame formed by a plurality of vertical and horizontal partition plates, and the partition plates are provided with a guide groove 2411 for inserting and guiding the hard disk cartridge, in this embodiment, the guide groove is an arc-shaped edge punched by a metal plate, and a bayonet 2412 for locking the hard disk, in this embodiment, the hard disk cartridge is a square opening.

It should be understood that the plug box structure provided in the embodiment of the present invention may be used as a hard disk plug box, and may also be used as a plug box of other target devices, that is, the target devices include, but are not limited to, a hard disk, a motherboard, and the like. When the target device is a hard disk, the inner frame 24 may further be provided with a hard disk control 243(RAID control card) for controlling and managing a hard disk array, where the adapting circuit board 23 may be a function board of a mother frame of a hard disk plug-in box, and the function circuit board 242 of the inner frame may be a hard disk backplane.

In another example of the present invention, the inner frame 24 may further be provided with a heat dissipation fan 26 for dissipating heat of the hard disk array and each circuit, please refer to fig. 12, the lower portion of the front end of the inner frame 24 includes two main control modules 27, the main control modules 27 are provided with hardware such as a central processing unit, a memory, etc., and the rear portion of the inner frame 24 is provided with a power supply module 29 and a switch interface board 28.

When the machine is assembled, the following steps can be performed, as shown in fig. 13, including:

s131: firstly, respectively assembling the middle back plate 22 and the switching circuit board 23;

s132: then the adapter circuit board 23 is inserted into the middle back plate 22 for fixing;

optionally, the adaptor circuit board 23 is held horizontally by two hands, two ends of the adaptor circuit board 23 are aligned with two sides of the middle back plate 22, two end portions of the adaptor circuit board 23 are in contact with guide surfaces formed by lower surfaces of protruding steps arranged on left and right side plates of the middle back plate 22, and the adaptor circuit board is forcibly pushed into a fixed position, so that the fixing portion 2312 of the adaptor circuit board 23 is fixed on a fixing member on the middle back plate 22.

S133: fixing the assembly (the mid-plane back plate 22 and the adapting circuit board 23 are fixedly connected) of the step S132 on the plug-in box main body 21 together;

s134: then, the functional circuit board 242 is fixedly assembled on the inner frame 24;

each hard disk inserted into the inner frame 24 is connected to the functional circuit board 242 through a corresponding port.

S135: inserting the inner frame 24 into the box body 21;

s136: binding the connecting cable between the functional circuit board 242 and the switching circuit board 23 on a folding line frame, fixing one end of the folding line frame with the plug box main body 21, and fixing the other end of the folding line frame with the inner frame 24;

s137: connecting one end of the two ends of the cable with the connector on the switching circuit board 23, and connecting the other end of the cable with the connector of the functional circuit board 242;

s138: and finally, inserting the hard disk cartridge and other modules to complete the whole machine assembly.

Wherein the other modules include, but are not limited to, a power module, etc.

Therefore, the hard disk on the inner frame 24 is reliably connected with other modules, data can be read and written, when the hard disk needs to be maintained, the inner frame is directly drawn out, the connected cable is drawn out along with the inner frame, the online state is kept, and online maintenance is achieved.

The plug-in box provided by the embodiment of the invention comprises a plug-in box main body, a middle back plate, a switching circuit board and an inner frame, wherein the front end of the plug-in box main body is provided with an opening, the middle back plate and the switching circuit board are arranged in the plug-in box main body, the inner frame is provided with at least two accommodating cavities for accommodating target equipment, each accommodating cavity is internally provided with a port for being connected with the target equipment, the inner frame is provided with a functional circuit board connected with each port, and the functional circuit board is connected with the middle back plate through the switching; the inner frame can be inserted into or pulled out of the plug box main body through the opening, the accommodating cavity is positioned in the plug box main body when the inner frame is inserted into the plug box main body, and the accommodating cavity is positioned outside the plug box main body when the inner frame is pulled out of the plug box main body; the existing double-layer plugging sub-frame structure is converted into a single-layer plugging structure, so that the occupation of the internal space of the plug box main body is saved, the inner frame is directly plugged in the plug box main body, and when a hard disk array arranged on the inner frame needs to be maintained, the hard disk can be maintained or replaced on line only by directly pulling out the inner frame from the plug box main body; the structure is simpler, the realization is easy, and the structural stability is good.

Example two:

in the embodiment of the present invention, on the basis of the first embodiment, referring to fig. 14, the communication device 140 at least includes the plug box 141 according to the first embodiment, and the communication device 140 may be a server, for example. The communication device 140 may further include a processor, a motherboard, a communication bus, and the like, and the midplane of the plug-in box 141 may be connected to at least one of the external processor, the motherboard, and the communication bus. The communication device of the embodiment of the present invention has all the technical features of the plug box described in the first embodiment, and has all the beneficial effects, which are not described herein again.

The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. An inserting box is characterized by comprising an inserting box main body, a middle back plate, a switching circuit board and an inner frame, wherein an opening is formed in the front end of the inserting box main body, the middle back plate and the switching circuit board are arranged in the inserting box main body, the inner frame is provided with at least two accommodating cavities for accommodating target equipment, ports for connecting with the target equipment are formed in the accommodating cavities, the inner frame is provided with a functional circuit board connected with the ports, and the functional circuit board is connected with the middle back plate through the switching circuit board; the inner frame can be inserted into the inserting box main body or pulled out of the inserting box main body through the opening, when the inner frame is inserted into the inserting box main body, the accommodating cavity is located in the inserting box main body, and when the inner frame is pulled out of the inserting box main body, the accommodating cavity is located outside the inserting box main body.

2. The box of claim 1, wherein the mid-plane back plate includes a load-bearing bracket portion and a control circuit portion fixedly connected, the load-bearing bracket portion being fixed to the rear end of the box body; the adapter circuit board comprises a bearing substrate part and an adapter circuit part which are fixedly connected, and when the bearing substrate part and the bearing bracket part are in a fixed connection state, the adapter circuit part is electrically connected with the control circuit part; the functional circuit board is arranged at the rear end of the inner frame and is electrically connected with the switching circuit part through a cable.

3. The box according to claim 2, wherein the supporting frame is provided with a guiding member and a fixing member at corresponding positions on the left and right sides, the guiding member is a step protruding towards the inside of the box body, and the fixing member is a groove or a hole protruding towards the outside of the box body; the left side and the right side of the bearing substrate part are respectively provided with a sliding part matched with the guide piece and a fixing part matched with the fixing piece; each sliding part is inserted and guided through the corresponding guide piece, and when each sliding part is inserted into a fixed position, each fixed part is matched and fixed with the corresponding fixed part.

4. The box of claim 3, wherein the sliding portion is a left end portion and a right end portion of the supporting base plate portion, the fixing portion is an arc-shaped protrusion outwardly disposed on the left side and the right side of the supporting base plate portion, the arc-shaped protrusion is driven by the left and right sides of the supporting bracket portion to move into the supporting base plate portion during the insertion and guiding of the sliding portion through the guiding member, and the arc-shaped protrusion returns to be engaged and fixed with the fixing member when the sliding portion is inserted into the fixing position.

5. The box of claim 2, wherein the box body has an opening at a rear end thereof, and the control circuit portion includes an interface for connection with the adapter circuit portion, the interface extending out of the box body rear end for connection with an external circuit.

6. The subrack of claims 1 to 5, wherein the functional circuit board is connected to the adapter circuit board through a routing assembly, the routing assembly includes a support frame and a cable, the cable is fixedly disposed on the support frame and is used for electrically connecting the functional circuit board and the adapter circuit board, one end of the support frame is fixedly connected to the inner frame, and the other end of the support frame is fixedly connected to the subrack main body so as to adapt to the insertion and extraction operations of the inner frame with respect to the subrack main body.

7. The box of claim 6, wherein the support is a wire-folding stand or a tow chain.

8. The box of claim 6, wherein the box body includes only one cavity for receiving the inner frame, the cavity sized to mate with the inner frame.

9. The box of claim 6, wherein the target device is a hard disk, and the inner frame is further provided with a hard disk control card.

10. A communication device, characterized in that it comprises a plug box according to any one of claims 1-9.