Extensible drawer type communication server

Abstract

The utility model provides a drawer type communication server easy to expand, which comprises a communication drawer and a circuit board assembly, a plurality of disassembly and assembly assemblies are uniformly arranged in the communication drawer, each disassembly and assembly assembly comprises a hinge frame and a mounting frame, a bending part of each mounting frame is hinged to the upper end of the hinge frame, and the circuit board assembly is arranged on the hinge frame. The mounting frame is provided with a circuit board supporting part and a circuit board limiting part, a supporting column of the hinge frame is supported below the circuit board supporting part, a limiting block, a reset cavity and a reset spring are arranged in the circuit board limiting part, the limiting block is connected into the reset cavity in a sliding mode, and the reset spring is connected into the reset cavity in a sliding mode. The reset spring is connected between the limiting block and the top of the reset cavity, the circuit board assembly is arranged on a plurality of circuit board supporting columns in the communication drawer and is limited and fixed by a plurality of dismounting assemblies, and a network port plug and a communication port plug are modularly plugged at the rear end of the circuit board assembly. The utility model relates to the technical field of communication.

Description

Technical Field

[0001] The utility model relates to the technical field of communication, in particular to an easily expandable drawer-type communication server. Background Art

[0002] The high-voltage switchgear in the distribution room is equipped with measurement and control devices to measure the current and voltage of the switchgear and control the opening / closing of the distribution cabinet. For the safety of the staff, these measurement and control devices often need to transmit their data to the background server through the communication server, and monitor and control the high-voltage switchgear through the background controller according to the data provided by the measurement and control device.

[0003] In the past communication server design, the traditional architecture is often fixed and not easy to expand. These servers are usually independent rack-mounted or tower-type devices with compact internal structures. Hardware resources such as CPU, memory and various interface cards are all pre-configured. Once business needs grow or technology iterations are updated, hardware expansion will face many challenges. In order to increase the number of communication ports to meet higher data exchange requirements, technicians have to physically disassemble the server and manually replace or add new circuit boards and communication interface modules. This process is time-consuming and complicated, requiring precise installation technology and professional technicians to operate, and also increases downtime and operation and maintenance costs.

[0004] With the expansion of scale and the development of technology, drawer-type communication servers came into being. This design integrates server hardware into standard-sized "drawers" that can be pulled out and pushed in. These drawers can be easily inserted into a unified cabinet, maximizing space utilization and quickly deploying and maintaining server nodes. However, in the existing drawer-type communication server technology, although the increase or decrease of the server itself has become relatively convenient, there are still deficiencies in realizing the flexible expansion of communication interfaces. For example, if you want to add a communication interface, you still need to remove the server from the running state, open the internal structure, perform complex circuit board modifications, and cut additional interface positions on the cabinet. In the installation of the communication expansion board, you need to align the studs in the cabinet and then make threaded connections, which undoubtedly greatly reduces the system's availability and operation and maintenance efficiency.

[0005] Therefore, in view of the above problems, it is urgent to develop a more expandable drawer-type communication server. Utility Model Content

[0006] In view of the defects of the above-mentioned prior art, the utility model provides an easily expandable drawer-type communication server, aiming to solve the problems in the prior art that it is troublesome to add Ethernet ports and communication interfaces to the communication server and the low efficiency of adding expansion boards.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an easily expandable drawer-type communication server, including a communication drawer and a circuit board assembly, wherein a plurality of disassembly and assembly components are evenly arranged in the communication drawer, and the disassembly and assembly components include an articulated frame and a mounting frame, the bending portion of the mounting frame is hinged to the upper end of the articulated frame, the mounting frame is provided with a circuit board support portion and a circuit board limiting portion, the support column of the articulated frame is supported below the circuit board support portion, a limiting block, a reset cavity and a reset spring are arranged in the circuit board limiting portion, the limiting block is slidably connected in the reset cavity, the reset spring is connected between the limiting block and the top of the reset cavity, the circuit board assembly is arranged on a plurality of circuit board support columns in the communication drawer, and is limited and fixed by a plurality of the disassembly and assembly components, and the network port plug and the communication port plug are modularly plugged in and out of the rear end of the circuit board assembly.

[0008] Based on the above, the beneficial effect of an easily expandable drawer-type communication server is to solve the problem that it is troublesome to add Ethernet ports and communication interfaces to the communication server in the prior art and the work efficiency of adding expansion boards is low, which is mainly reflected in: the utility model realizes the rapid installation and replacement of circuit board components, especially communication boards and expansion boards, through the disassembly and assembly component design, significantly improving the work efficiency of equipment maintenance and upgrading, and the network port plug and the communication port plug adopt a modular plug-in method, which solves the problem of cumbersome and time-consuming addition of interfaces in traditional communication servers and enhances the expansion flexibility of the equipment; the beneficial effect of the communication drawer is that it is designed with multiple functional partitions such as power board installation area, communication board installation area and expansion board installation area, which is conducive to modular layout and management, and facilitates equipment maintenance and upgrading; the beneficial effect of the circuit board assembly is to realize the various functions of the communication server; the beneficial effect of the disassembly and assembly component is to provide a flexible disassembly and assembly mechanism, simplify the installation process of the circuit board, and reduce the operation difficulty and workload of the technicians; the beneficial effect of the articulated frame is that the bending part of the mounting frame is connected by an articulated manner, providing flexible rotation and adjustment space, allowing the circuit board to be inserted or removed at a certain angle , thereby simplifying the installation and disassembly process; the beneficial effect of the mounting frame is that the circuit board can be installed at a certain angle and the circuit board can be positioned through the cooperation of the bending part and the hinge frame; the beneficial effect of the circuit board support part is that when the mounting frame is rotated to a certain angle, the circuit board is horizontally supported and placed; the beneficial effect of the circuit board limit part is to provide accurate positioning for the circuit board, prevent the circuit board from moving during use, and ensure that each interface is accurately aligned with the preset hole at the rear end of the communication drawer; the beneficial effect of the limit block is that it is connected to the reset cavity by sliding, and the limit block can move within the specified stroke range, ensuring that the circuit board can be quickly positioned to the correct position during disassembly and assembly, thereby improving the installation accuracy and stability; the beneficial effect of the reset cavity is to provide the limit block with a movable space when the circuit board is disassembled and assembled; the beneficial effect of the reset spring is to help the limit block return to its original position quickly and smoothly, simplify the operation process, and reduce the error and wear that may be caused by manual adjustment; the beneficial effect of the circuit board support column is to provide stable vertical support for the circuit board, ensuring that it is firmly positioned in the drawer; the beneficial effect of the network port plug is to insert the network cable; the beneficial effect of the communication port plug is to insert the communication cable.

[0009] Furthermore, a power board installation area, a communication board installation area and an expansion board installation area are sequentially arranged in the communication drawer from left to right, and the circuit board assembly includes a power board, a communication board and an expansion board. The power board is arranged on the power board installation area, the communication board is arranged on the communication board installation area, and the expansion board is arranged on the expansion board installation area.

[0010] Based on the above, the beneficial effect of the power board installation area is to install the power board; the beneficial effect of the communication board installation area is to install the communication board; the beneficial effect of the expansion board installation area is to install the expansion board; the beneficial effect of the power board is to provide power supply and switching of the equipment; the beneficial effect of the communication board is to be responsible for the processing of communication protocol data and provide network port plugs and communication port plugs; the beneficial effect of the expansion board is to expand the number of communication port plugs.

[0011] Furthermore, the rear end of the communication drawer is provided with a power switch hole, a power socket hole, a plurality of Ethernet port holes and a plurality of communication socket holes from left to right, the rear end of the power board is provided with a power switch and a power socket, the power switch is adapted in the power switch hole, the power socket is adapted in the power socket hole, the rear end of the communication board is provided with a plurality of Ethernet port modules and a plurality of communication socket modules, each of the Ethernet port modules is adapted in one of the Ethernet port holes, each of the communication socket modules is adapted in one of the communication socket holes, and the rear end of the expansion board is also provided with a plurality of communication socket modules.

[0012] Based on the above, the beneficial effect of the power switch hole is that the adapter power switch extends outward, which is convenient for users to use; the beneficial effect of the power socket hole is that the adapter power socket extends outward, which is convenient for users to plug in the power cord; the beneficial effect of the Ethernet port hole is that the adapter network port plug extends outward, which is convenient for users to plug in the network cable; the beneficial effect of the communication socket hole is that the adapter communication port plug extends outward, which is convenient for users to plug in the communication cable; the beneficial effect of the Ethernet port module and the communication socket module is that they realize the plug-and-play function and significantly simplify the operation steps of adding or replacing interfaces.

[0013] Furthermore, the Ethernet port module is provided with a network port connection socket, the network port plug and two first locking components, the network port connection socket is arranged on the communication board and is electrically connected to the communication board, the network port plug is slidably connected to the network port connection socket, and the two first locking components are respectively arranged on both sides of the front of the network port connection socket, the first locking component is provided with a first hinge block and a first locking rod, the first hinge block is welded to the communication board, the lower end of the first locking rod is hinged to the first hinge block, the rear end of the top of the first locking rod is provided with a first locking head, and the front end of the top of the first locking rod is provided with a first pressing head, and the two first locking heads are buckled in the first buckle grooves on both sides of the lower front end of the network port plug.

[0014] Based on the above, the beneficial effect of the network port connecting seat is to slide and connect the network port plug; the beneficial effect of the first locking component is to lock the network port plug on the network port connecting seat; the beneficial effect of the first hinge block is to hingedly install the first locking rod; the beneficial effect of the first locking rod is that it is rotatably connected to the first hinge block and can snap the first locking head into the first locking groove to lock the network port plug on the network port connecting seat; the beneficial effect of the first pressing head is: pushing the first pressing head downward to make the first locking head leave the first locking groove, thereby unlocking and removing the network port plug.

[0015] Furthermore, the communication socket module is provided with a communication port connection socket, the communication port plug and two second locking components, the communication port connection socket is arranged on the communication board and is electrically connected to the communication board, the communication port plug is slidably connected to the communication port connection socket, and the two second locking components are respectively arranged on both sides of the front of the communication port connection socket, the second locking component is provided with a second hinge block and a second locking rod, the second hinge block is welded to the communication board, the lower end of the second locking rod is hinged to the second hinge block, the rear end of the top of the second locking rod is provided with a second locking head, and the front end of the top of the second locking rod is provided with a second pressing head, and the two second locking heads are snap-connected to the second snap grooves on both sides of the lower front end of the communication port plug.

[0016] Based on the above, the beneficial effect of the communication port connecting socket is the sliding connection to install the communication port plug; the beneficial effect of the second locking component is to lock the communication port plug on the communication port connecting socket; the beneficial effect of the second hinge block is to hingedly install the second locking rod; the beneficial effect of the second locking rod is that it is rotatably connected to the second hinge block and can snap the second locking head into the second locking groove to lock the communication port plug on the communication port connecting socket; the beneficial effect of the second pressing head is: pushing the second pressing head downward to make the second locking head leave the second locking groove, thereby unlocking and removing the communication port plug.

[0017] Furthermore, a communication extension plug is provided on one side of the communication board, and a communication extension plug is also provided on one side of the extension board, and the two communication extension plugs are connected via a signal line.

[0018] Based on the above, the beneficial effect of the communication expansion plug is to enable efficient signal transmission between the communication board and the expansion board, meet the needs of server function expansion, and improve overall work efficiency.

[0019] Furthermore, the communication board and the expansion board are both connected to the power board via electrical signals.

[0020] In order to more clearly illustrate the above features of the present invention and the objectives to be achieved, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 2 : It is a schematic diagram of the structure of the communication drawer of the utility model;

[0023] Figure 3 : It is a rear end schematic diagram of the communication drawer of the utility model;

[0024] Figure 4 : It is a schematic diagram of the disassembly assembly of the utility model from the circuit board assembly;

[0025] Figure 5 : A schematic diagram of the disassembly and assembly of the circuit board assembly of the utility model;

[0026] Figure 6 : It is a schematic diagram of the structure of the disassembly and assembly components of the utility model;

[0027] Figure 7 : It is a port schematic diagram of the Ethernet port module of the utility model;

[0028] Figure 8 : It is a side view of the Ethernet port module locking the network port plug of the utility model;

[0029] Fig. 9 : It is a side view of the network port plug when the first locking component of the Ethernet port module of the utility model is opened;

[0030] Fig.10 : It is a port schematic diagram of the communication socket module of the utility model;

[0031] Fig.11 : It is a side view schematic diagram of the communication socket module of the utility model locking the communication port plug;

[0032] Fig.12 : It is a side view of the communication port plug when the second locking component of the communication socket module of the present invention is opened.

[0033] Description of the accompanying drawings: 1-communication drawer, 11-power switch hole, 12-power socket hole, 13-Ethernet port hole, 14-communication socket hole, 2-circuit board assembly, 21-power board, 211-power switch, 212-power socket, 22-communication board, 221-Ethernet port module, 2211-network port connection seat, 2212-network port plug, 2213-first locking component, 2214-first hinge block, 2215-first locking rod, 2215a-first locking head, 2215b-first pressing head, 2216-first buckle groove, 222-communication socket module, 2221-communication port Connecting seat, 2222-communication port plug, 2223-second locking component, 2224-second hinge block, 2225-second locking rod, 2225a-second locking head, 2225b-second pressing head, 2226-second snap groove, 223-communication extension plug, 23-extension board, 3-disassembly and assembly components, 31-hinge frame, 32-mounting frame, 321-circuit board support part, 322-circuit board limiting part, 3221-limiting block, 3222-reset cavity, 3223-reset spring, 4-circuit board support column, 5-power board installation area, 6-communication board installation area, 7-extension board installation area. DETAILED DESCRIPTION

[0034] like Figure 1-Figure 12 As shown, an easily expandable drawer-type communication server includes a communication drawer 1 and a circuit board assembly 2. The communication drawer 1 is evenly provided with a plurality of disassembly and assembly assemblies 3. The disassembly and assembly assemblies 3 include an articulated frame 31 and a mounting frame 32. The bending portion of the mounting frame 32 is hinged to the upper end of the articulated frame 31. The mounting frame 32 is provided with a circuit board support portion 321 and a circuit board stop portion 322. The support column 311 of the articulated frame 31 is supported below the circuit board support portion 321. The circuit board stop portion 322 is provided with a support column 311. A limit block 3221, a reset cavity 3222 and a reset spring 3223, the limit block 3221 is slidably connected in the reset cavity 3222, the reset spring 3223 is connected between the limit block 3221 and the top of the reset cavity 3222, the circuit board assembly 2 is arranged on a plurality of circuit board support columns 4 in the communication drawer 1, and is limited and fixed by a plurality of the disassembly and assembly components 3, the network port plug 2212 and the communication port plug 2222 are both modularly plugged in and out of the rear end of the circuit board assembly 2.

[0035] The communication drawer 1 is provided with a power board installation area 5, a communication board installation area 6 and an expansion board installation area 7 from left to right. The circuit board assembly 2 includes a power board 21, a communication board 22 and an expansion board 23. The power board 21 is arranged on the power board installation area 5, the communication board 22 is arranged on the communication board installation area 6, and the expansion board 23 is arranged on the expansion board installation area 7.

[0036] The rear end of the communication drawer 1 is provided with a power switch hole 11, a power socket hole 12, a plurality of Ethernet port holes 13 and a plurality of communication socket holes 14 from left to right in sequence; the rear end of the power board 21 is provided with a power switch 211 and a power socket 212; the power switch 211 is adapted to be in the power switch hole 11; the power socket 212 is adapted to be in the power socket hole 12; the rear end of the communication board 22 is provided with a plurality of Ethernet port modules 221 and a plurality of communication socket modules 222; each of the Ethernet port modules 221 is adapted to be in one of the Ethernet port holes 13; each of the communication socket modules 222 is adapted to be in one of the communication socket holes 14; the rear end of the expansion board 23 is also provided with a plurality of communication socket modules 222.

[0037] The Ethernet port module 221 is provided with a network port connection seat 2211, a network port plug 2212 and two first locking parts 2213. The network port connection seat 2211 is provided on the communication board 22 and is electrically connected to the communication board 22. The network port plug 2212 is slidably connected to the network port connection seat 2211. The two first locking parts 2213 are respectively provided on both sides in front of the network port connection seat 2211. The first locking part 2213 is provided with a first hinge. Block 2214 and a first locking rod 2215, the first hinge block 2214 is welded to the communication board 22, the lower end of the first locking rod 2215 is hinged to the first hinge block 2214, the rear end of the top of the first locking rod 2215 is provided with a first locking head 2215a, the front end of the top of the first locking rod 2215 is provided with a first pressing head 2215b, and the two first locking heads 2215a are snap-connected to the first snap grooves 2216 on both sides of the lower front end of the network port plug 2212.

[0038] The communication socket module 222 is provided with a communication port connection seat 2221, the communication port plug 2222 and two second locking parts 2223. The communication port connection seat 2221 is provided on the communication board 22 and is electrically connected to the communication board 22. The communication port plug 2222 is slidably connected to the communication port connection seat 2221. The two second locking parts 2223 are respectively provided on both sides in front of the communication port connection seat 2221. The second locking parts 2223 are provided with second A hinge block 2224 and a second locking rod 2225, wherein the second hinge block 2224 is welded to the communication board 22, the lower end of the second locking rod 2225 is hinged to the second hinge block 2224, a second locking head 2225a is provided at the rear end of the top of the second locking rod 2225, a second pressing head 2225b is provided at the front end of the top of the second locking rod 2225, and the two second locking heads 2225a are snap-connected to the second snap grooves 2226 on both sides of the lower front end of the communication port plug 2222.

[0039] A communication extension plug 223 is disposed on one side of the communication board 22 , and a communication extension plug 223 is also disposed on one side of the extension board 23 . The two communication extension plugs 223 are connected via a signal line.

[0040] The communication board 22 and the expansion board 23 are both connected to the power board 21 via electrical signals.

[0041] In summary, the specific implementation of the utility model is as follows: align the network port plug 2212 of the Ethernet port module 221 of the communication board 22 with the Ethernet port hole 13 at the rear end of the communication drawer 1, align the communication port plug 2222 of the communication socket module 222 with the communication socket hole 14 at the rear end of the communication drawer 1, and align the communication board 22 with the corresponding communication board installation area 6 in the communication drawer 1, then align the front end of the communication board 22 with the mounting bracket 32 ​​at the corresponding position, and insert it at a certain angle until the network port plug 2212 and the communication port plug 2222 at the rear end of the communication board 22 are inserted and limited in the Ethernet port hole 13 and the communication socket hole 14 on the rear wall of the communication drawer 1. During the insertion process, the limit block 3221 of the circuit board limit part 322 automatically adapts to and locks the position of the communication board 22 under the action of the reset spring 3223, ensuring that the communication board 22 is firmly fixed on a number of circuit board support columns 4;

[0042] If an expansion board 23 is needed, find the communication expansion plug 223 on one side of the communication board 22, install the expansion board 23 according to the above steps, and then connect the communication expansion plug 223 on one side of the communication board 22 with the corresponding communication expansion plug 223 on the expansion board 23 through a signal line to ensure that the connection is tight and there is no wrong insertion;

[0043] In addition, if it is necessary to separately add an Ethernet port module 221 and a communication socket module 222 to the communication board 22, first, align the prepared network port plug 2212 and the communication port plug 2222 with the preset network port connection socket 2211 and the communication port connection socket 2221 at the rear of the communication board 22, and gently slide them in. Next, manually pull the first locking rod 2215 and the second locking rod 2225 in the first locking component 2213 and the second locking component 2223 to rotate along their respective corresponding first hinge blocks 2214 and second hinge blocks 2224. During this process, the first lock head 2215a and the second lock head 2225a will respectively rotate with the first locking rod 2215 and the second locking rod 2225 and accurately snap into the first snap groove 2216 on both sides of the network port plug 2212 and the second snap groove 2226 on both sides of the communication port plug 2222, thereby achieving a secure locking of the network port plug 2212 and the communication port plug 2222 and completing the installation of the new interface module.

[0044] The above description is only the optimal solution embodiment of the present invention and is not intended to limit the present invention. Various modifications or substitutions made to the present invention by those skilled in the art without departing from the essence and protection scope of the present invention should also be within the protection scope of the present invention.

Claims

1. An easily expandable drawer-type communication server, comprising a communication drawer (1) and a circuit board assembly (2), characterized in that: A plurality of disassembly and assembly components (3) are evenly arranged in the communication drawer (1), and the disassembly and assembly components (3) include an articulated frame (31) and a mounting frame (32), the bending portion of the mounting frame (32) is hinged to the upper end of the articulated frame (31), the mounting frame (32) is provided with a circuit board support portion (321) and a circuit board limiting portion (322), the support column (311) of the articulated frame (31) is supported below the circuit board support portion (321), and a limiting block (3221) and a reset cavity (322) are arranged in the circuit board limiting portion (322). 222) and a reset spring (3223), the limit block (3221) is slidably connected in the reset cavity (3222), the reset spring (3223) is connected between the limit block (3221) and the top of the reset cavity (3222), the circuit board assembly (2) is arranged on a plurality of circuit board support columns (4) in the communication drawer (1), and is limited and fixed by a plurality of the disassembly and assembly components (3), and the network port plug (2212) and the communication port plug (2222) are modularly plugged in and out of the rear end of the circuit board assembly (2).

2. The easily expandable drawer-type communication server according to claim 1, characterized in that: The communication drawer (1) is provided with a power board installation area (5), a communication board installation area (6) and an expansion board installation area (7) from left to right, the circuit board assembly (2) comprises a power board (21), a communication board (22) and an expansion board (23), the power board (21) is arranged on the power board installation area (5), the communication board (22) is arranged on the communication board installation area (6), and the expansion board (23) is arranged on the expansion board installation area (7).

3. The easily expandable drawer-type communication server according to claim 2, characterized in that: The rear end of the communication drawer (1) is provided with a power switch hole (11), a power socket hole (12), a plurality of Ethernet port holes (13) and a plurality of communication socket holes (14) in sequence from left to right; the rear end of the power board (21) is provided with a power switch (211) and a power socket (212); the power switch (211) is adapted in the power switch hole (11); the power socket (212) is adapted in the power socket hole (12); the rear end of the communication board (22) is provided with a plurality of Ethernet port modules (221) and a plurality of communication socket modules (222); each of the Ethernet port modules (221) is adapted in one of the Ethernet port holes (13); each of the communication socket modules (222) is adapted in one of the communication socket holes (14); and the rear end of the expansion board (23) is also provided with a plurality of communication socket modules (222).

4. The easily expandable drawer-type communication server according to claim 3, characterized in that: The Ethernet port module (221) is provided with a network port connection seat (2211), the network port plug (2212) and two first locking components (2213); the network port connection seat (2211) is provided on the communication board (22) and is electrically connected to the communication board (22); the network port plug (2212) is slidably connected to the network port connection seat (2211); the two first locking components (2213) are respectively provided on both sides in front of the network port connection seat (2211); the first locking component (2213) is provided with a first hinge block (2214) and a first locking rod (2215), the first hinge block (2214) is welded to the communication board (22), the lower end of the first locking rod (2215) is hinged to the first hinge block (2214), the rear end of the top of the first locking rod (2215) is provided with a first locking head (2215a), the front end of the top of the first locking rod (2215) is provided with a first pressing head (2215b), and the two first locking heads (2215a) are snap-connected to the first snap grooves (2216) on both sides of the lower front end of the network port plug (2212).

5. The easily expandable drawer-type communication server according to claim 3, characterized in that: The communication socket module (222) is provided with a communication port connection seat (2221), the communication port plug (2222) and two second locking components (2223); the communication port connection seat (2221) is provided on the communication board (22) and is electrically connected to the communication board (22); the communication port plug (2222) is slidably connected to the communication port connection seat (2221); the two second locking components (2223) are respectively provided on both sides in front of the communication port connection seat (2221); the second locking component (2223) is provided with a second hinge A connecting block (2224) and a second locking rod (2225), wherein the second hinge block (2224) is welded to the communication board (22), the lower end of the second locking rod (2225) is hinged to the second hinge block (2224), a second locking head (2225a) is arranged at the rear end of the top of the second locking rod (2225), a second pressing head (2225b) is arranged at the front end of the top of the second locking rod (2225), and the two second locking heads (2225a) are snap-connected to the second snap grooves (2226) on both sides of the lower front end of the communication port plug (2222).

6. The easily expandable drawer-type communication server according to claim 2, characterized in that: A communication extension plug (223) is provided on one side of the communication board (22), and a communication extension plug (223) is also provided on one side of the extension board (23), and the two communication extension plugs (223) are connected via a signal line.

7. The easily expandable drawer-type communication server according to claim 2, characterized in that: The communication board (22) and the expansion board (23) are both connected to the power board (21) via electrical signals.

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