A router board component that supports modular expansion

Abstract

This utility model relates to the field of router board technology, and discloses a router board component that supports modular expansion. In modern network communication, existing router board expansion suffers from problems such as cumbersome operation, unstable connection, difficult disassembly and assembly, and poor heat dissipation. This component consists of multiple router board units that can be stacked vertically. Each board unit includes an expansion box and a board body, which are connected by a snap-fit ​​component. The L-shaped latch of the lower unit is pushed by the abutment protrusion on the support block of the upper unit, automatically rotates and retracts, and snaps into the limiting groove of the upper unit, completing the connection and locking. To disassemble, the latch can be unlocked by moving the sliding base. At the same time, the board body is easy to install, and the stacked components form a heat dissipation channel. This component improves assembly efficiency and structural stability, enhances heat dissipation, and is suitable for router board expansion scenarios.

Description

Technical Field

[0001] This utility model relates to the field of router board technology, and in particular to a router board component that supports modular expansion. Background Technology

[0002] In the field of modern network communication equipment, routers, as core components, face continuously increasing demands for processing power and port density. To adapt to different application scenarios and scales, modular expansion capabilities have become an important direction in router design. Existing technologies offer various methods for expanding router boards, but some solutions still suffer from the following problems:

[0003] Firstly, when expanding router board units, they need to be connected one by one using bolts and other fasteners, which is cumbersome and inefficient, making it difficult to meet the needs of rapid modular expansion.

[0004] Secondly, the connection stability between stacked board units is insufficient, and they are prone to loosening due to vibration or external force, affecting the overall reliability of the equipment.

[0005] Third, the disassembly and assembly process requires specialized tools, which are difficult for non-professionals to operate and have high maintenance costs.

[0006] Fourth, after stacking, the ventilation space between each board unit is limited, heat is easy to accumulate, and long-term operation is prone to performance degradation or failure due to overheating.

[0007] To address the aforementioned issues, this utility model proposes a router board assembly that supports modular expansion. Utility Model Content

[0008] The purpose of this utility model is to solve the shortcomings of existing technologies, such as the need for bolt fixing for traditional router board expansion, cumbersome operation, unstable connection, and difficulty in disassembly and assembly, as well as poor heat dissipation, which can easily affect expansion efficiency, reliability and long-term operational stability. Therefore, this utility model proposes a router board component that supports modular expansion.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A router board component supporting modular expansion includes:

[0011] Multiple router board units are stacked sequentially to support modular expansion.

[0012] The router board unit includes an expansion box and a router board body. The router board body is slidably disposed in the expansion box. The top of the expansion box is provided with an annular frame and a top plate. The annular frame is fixedly connected to the top of the expansion box, and the top plate is fixedly connected to the top of the annular frame.

[0013] The locking assembly includes two mating plates fixed to the top of the top plate, and two L-shaped buckles on each of the two mating plates on opposite sides; two limiting protrusions are fixed to the outer wall of the expansion box, and two adjacent limiting protrusions form a limiting groove. The L-shaped buckles engage with the limiting groove of the adjacent expansion box above, realizing the connection and locking of two adjacent router board units without the need for bolt fixation.

[0014] In one possible design, the engaging assembly further includes an adjusting groove disposed within two mating plates. A fixed rod is fixedly connected within the adjusting groove, and two sliders are slidably disposed within the adjusting groove. The two sliders are slidably sleeved on the outer wall of the fixed rod. A spring is sleeved on the outer wall of the fixed rod, and the two ends of the spring abut against the two sliders respectively through spring seats. A sliding seat is fixedly connected to one side of the slider, and the L-shaped buckle cooperates with the sliding seat.

[0015] In one possible design, the engaging assembly further includes two mounting brackets fixed to one side of the sliding seat. Two fixing ears are fixed to one side of the L-shaped buckle. The fixing ears are close to the mounting brackets and are arranged crosswise with the mounting brackets. A common fixing pin passes through two adjacent mounting brackets. The fixing ears are rotatably sleeved on the outer wall of the fixing pin. A torsion spring is sleeved on the outer wall of the fixing pin. The two ends of the torsion spring are fixed to the fixing ears and the mounting brackets respectively through spring seats, so that the L-shaped buckle remains open when it is not subjected to external force.

[0016] In one possible design, the locking assembly further includes a fixing post fixed to the L-shaped buckle away from the bent end, with an abutment block fixed to one side of the fixing post, the abutment block facing the mating plate; the mating plate has a concave surface near its bottom end, with two mounting slots on one side of the concave surface, and the abutment block is located in the mounting slot; four support blocks are fixed to the bottom of the expansion box, with abutment protrusions on one side of the support blocks, the abutment protrusions slidingly engaging with the mounting slots of adjacent router board units, pushing the abutment blocks to automatically engage the L-shaped buckle.

[0017] In one possible design, the inner walls on both sides of the expansion box are fixed with a fixing protrusion and a fixing plate. The fixing plate is located above the fixing protrusion, and the bottom of the fixing plate and the top of the fixing protrusion form a positioning groove. The PCB board of the router board body slides with the positioning groove on both sides to ensure stable installation of the router board body.

[0018] In one possible design, two fixing blocks are fixed to the inner wall of the top of the expansion box. The fixing blocks are located above the fixing plate. One end of each fixing block and the fixing protrusion is provided with a threaded hole. The router board main body panel is provided with through holes near the four corners. The through holes correspond to the threaded holes and are used to fix the router board main body with screws.

[0019] In one possible design, the four sides of the annular frame are provided with evenly arranged mesh holes, forming a heat dissipation cavity inside the annular frame. The top plate and the top and bottom of the expansion box are provided with multiple ventilation holes. The ventilation holes work together to connect the inside of the expansion box with the heat dissipation cavity, ensuring good heat dissipation after stacking.

[0020] In one possible design, the abutment block and the abutment protrusion have the same width, and the width of the mounting groove is twice the width of the abutment block; when two adjacent sliding seats are pushed closer to each other, the abutment block is offset from the abutment protrusion in the mounting groove, and the L-shaped buckle is automatically reset and unlocked under the drive of the torsion spring.

[0021] In one possible design, filters are provided on the inner wall of the annular frame and on the planes corresponding to the multiple ventilation holes to reduce the accumulation of dust inside the equipment.

[0022] In this application, during use, the router board body is pushed into the expansion box. The edges of the PCB boards on both sides of the router board body slide along the positioning grooves on the inner walls of both sides of the expansion box until they reach the predetermined position. At this time, the through holes on the front panel of the router board body are aligned with the threaded holes on the fixing blocks on the top inner wall and the bottom fixing protrusions of the expansion box. By using external screws to pass through the through holes on the front panel and screw them into the corresponding threaded holes, the router board body can be fixed in the expansion box.

[0023] When performing modular expansion, take an expansion box with an installed router board as the base unit. Place another identical router board unit on top of it, aligning the four support blocks at the bottom of the upper expansion box with the mounting slots on the concave surface of the mating plate of the lower unit and sliding them in. At this time, the abutment protrusions on the side of the support blocks also enter the mounting slots.

[0024] As the upper unit gradually lowers, the abutment protrusion of its support block contacts the abutment block in the mounting groove of the lower unit. Continued downward pressure pushes the abutment protrusion to move the abutment block outwards from the mating plate. This movement of the abutment block causes the fixing post and L-shaped latch to rotate accordingly, with the bent end of the L-shaped latch rotating and retracting towards the mating plate. During this process, the torsion spring fitted on the fixing pin is twisted, accumulating restoring force.

[0025] When the upper unit is fully seated on the lower unit, the bent end of the L-shaped buckle will engage with the limiting groove formed by the two limiting protrusions of the upper unit, thus completing the vertical connection locking between the two router board units. Furthermore, the cooperation between the two support blocks and the mounting slots also limits the horizontal position between two adjacent router board units, ensuring stable stacking of multiple router board units.

[0026] When a user needs to disassemble multiple router board units, the user only needs to move two adjacent sliding blocks closer together. At this time, the bent ends of the two corresponding L-shaped buckles can slide within the corresponding limiting grooves as the sliding blocks move. When the abutment block moves to a position that is offset from the adjacent abutment protrusion, the two corresponding L-shaped buckles can automatically unfold and reset under the action of the torsion spring. At this time, the bent ends of the two L-shaped buckles can disengage from the corresponding limiting grooves, thereby unlocking one side of the adjacent router board unit.

[0027] When the device is operating, heat is generated from the router's main board. Multiple ventilation holes are located at the bottom and top of the expansion box, and the mesh-framed design ensures effective communication between the interior and the outside environment. Furthermore, when the devices are stacked, multiple units can be connected sequentially to form a vertical cooling duct, allowing for efficient airflow and exhaust of hot air throughout the assembly, facilitating long-term operation.

[0028] Beneficial effects: In this utility model, the router board assembly supporting modular expansion allows for direct stacking and combination of multiple router board units with identical structures, simplifying expansion operations. Simultaneously, through the locking component, the L-shaped latch of the lower unit, when pressed down by the adjacent upper unit, is pushed by the abutment protrusion on its support block, automatically rotating and closing to finally lock into the limiting groove on the outer wall of the upper unit. This process requires no additional tools or complex operations; simply applying pressure through vertical stacking completes the connection and locking between adjacent units, greatly improving assembly efficiency. During disassembly, simply moving the sliding seat to misalign the abutment block with the abutment protrusion allows the L-shaped latch to automatically open and reset under the action of the torsion spring, disengaging from the limiting groove, making unlocking equally convenient.

[0029] In this utility model, the router board assembly that supports modular expansion is stacked such that the support block at the bottom of the upper unit is inserted into the mounting slot of the mating plate of the lower unit. This fit not only achieves horizontal positioning to prevent relative sliding between units, but also, combined with the vertical locking of the L-shaped buckle snapping into the positioning slot, ensures the overall structural stability of the stacked units.

[0030] In this utility model, the router board assembly that supports modular expansion allows the router board body to be smoothly pushed into the expansion box through the sliding engagement of the PCB edges on both sides with the positioning grooves on the inner wall of the expansion box. After reaching the predetermined position, the board body is fixed by screwing through the through holes of the board panel into the threaded holes of the top fixing block and the bottom fixing protrusion of the expansion box. This structural design facilitates the installation, disassembly, maintenance, and replacement of the board body.

[0031] In this utility model, a router board assembly that supports modular expansion is provided. Each router board unit has multiple ventilation holes at the top and bottom of its expansion box. When stacked, the top ventilation holes of the lower unit are opposite to the bottom ventilation holes of the upper unit and are connected to the heat dissipation cavity formed by the mesh openings on the side of the annular frame. This structural design enables multiple units to be stacked and combined to naturally form a vertical heat dissipation channel, which is conducive to the circulation and exhaust of internal hot air, effectively improving the heat dissipation effect in high-density stacking environments and ensuring the continuous and stable operation of the equipment.

[0032] In this utility model, the router board assembly simplifies the expansion operation of the device through a modular stacking design; the locking component automatically locks when stacked vertically, and unlocking is achieved by simply moving the sliding seat during disassembly; the support block and the mounting slot cooperate to achieve horizontal limit, and the combination of buckle locking ensures the stability of the stack; the board body is fixed by the sliding groove and screws for easy disassembly and maintenance, and the ventilation holes and mesh holes form a vertical heat dissipation channel, effectively improving the heat dissipation efficiency in the stacked state. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of a router board assembly that supports modular expansion, as proposed in this utility model.

[0034] Figure 2 This is a schematic diagram of the disassembled structure of a router board unit that supports modular expansion, as proposed in this utility model.

[0035] Figure 3 This is a schematic diagram of the disassembled expansion box structure of a router board assembly that supports modular expansion, as proposed in this utility model.

[0036] Figure 4 This is a partially enlarged structural diagram of the internal structure of the expansion box of a router board assembly that supports modular expansion, as proposed in this utility model.

[0037] Figure 5 This is a partially enlarged external structural diagram of the expansion box of a router board assembly supporting modular expansion proposed in this utility model.

[0038] Figure 6 This is a schematic diagram of the disassembled structure of a router board assembly that supports modular expansion, as proposed in this utility model.

[0039] Figure 7 This is a schematic diagram of the sliding base and L-shaped latch of a router board assembly that supports modular expansion, as proposed in this utility model, in a separated state.

[0040] In the diagram: 1. Router board unit; 2. Expansion box; 3. Router board body; 4. Ring frame; 5. Top plate; 6. Ventilation hole; 7. Connecting plate; 8. L-shaped buckle; 9. Fixing protrusion; 10. Fixing plate; 11. Positioning groove; 12. Fixing block; 13. Limiting protrusion; 14. Limiting groove; 15. Support block; 16. Abutting protrusion; 17. Adjusting groove; 18. Fixing rod; 19. Spring; 20. Mounting groove; 21. Sliding seat; 22. Slider; 23. Mounting bracket; 24. Fixing pin; 25. Fixing ear; 26. Torsion spring; 27. Fixing post; 28. Abutting block. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0042] In one embodiment: Refer to Figure 1-7 A router board component, comprising:

[0043] Multiple router board units 1 are stacked one on top of the other to achieve modular expansion.

[0044] In this embodiment, each router board unit 1 consists of an expansion box 2 and a router board body 3, with the router board body 3 slidably disposed inside the expansion box 2. The top of the expansion box 2 is provided with an annular frame 4 and a top plate 5, with the annular frame 4 fixedly installed on the top of the expansion box 2 and the top plate 5 fixedly installed on the top of the annular frame 4.

[0045] In this embodiment, each router board unit 1 is further provided with a locking assembly, which includes two mating plates 7 fixedly installed on the top of the top plate 5. Two L-shaped latches 8 are provided on the opposite sides of the two mating plates 7. Two limiting protrusions 13 are fixedly installed on the outer walls of multiple expansion boxes 2. A limiting groove 14 is formed between two adjacent limiting protrusions 13. Multiple L-shaped latches 8 can engage with the limiting grooves 14 on the outer walls of adjacent expansion boxes 2 located above, thereby completing the connection locking between two adjacent router board units 1.

[0046] In this embodiment, the engaging assembly further includes adjusting grooves 17 formed inside the two mating plates 7. A fixing rod 18 is fixedly installed inside each of the two adjusting grooves 17, and two sliders 22 are slidably installed inside each adjusting groove 17. Each slider 22 is slidably sleeved on the outer wall of an adjacent fixing rod 18. Springs 19 are sleeved on the outer wall of each of the two fixing rods 18. One end of each spring 19 abuts against one end of one adjacent slider 22 via a spring seat, and the other end of each spring 19 abuts against one end of another adjacent slider 22 via a spring seat. A sliding seat 21 is fixedly installed on one side of each of the sliders 22, and multiple L-shaped buckles 8 cooperate with the corresponding sliding seat 21.

[0047] In this embodiment, the engaging assembly further includes two mounting brackets 23 fixedly installed on one side of multiple sliding seats 21. Two fixing ears 25 are fixedly installed on one side of each of the multiple L-shaped latches 8. The two fixing ears 25 are tightly abutted against the corresponding mounting brackets 23, and the two mounting brackets 23 and the two fixing ears 25 are arranged in a crisscross pattern. A common fixing pin 24 is fixedly passed through adjacent mounting brackets 23. The two fixing ears 25 are rotatably sleeved on the outer wall of the adjacent fixing pin 24. Torsion springs 26 are sleeved on the outer wall of each of the multiple fixing pins 24. One end of each torsion spring 26 is fixedly connected to one side of the adjacent fixing ear 25 via a spring seat, and the other end of each torsion spring 26 is fixedly connected to one side of the adjacent mounting bracket 23 via a spring seat. This enables continuous unidirectional drive of the multiple L-shaped latches 8, ensuring that the multiple L-shaped latches 8 remain in an open state when not subjected to external force.

[0048] In this embodiment, the engaging assembly further includes fixing posts 27 fixedly installed on the plurality of L-shaped buckles 8 away from the bent ends. Abutment blocks 28 are fixedly installed on one side of each fixing post 27, and the abutment blocks 28 face the adjacent mating plates 7. The portions of the two mating plates 7 near their bottom ends are provided with concave surfaces, and two mounting grooves 20 are provided on one side of each concave surface of the two mating plates 7. The abutment blocks 28 are located within the corresponding mounting grooves 20.

[0049] In this embodiment, four support blocks 15 are fixedly installed at the bottom of the expansion box 2, providing support for the expansion box 2. Simultaneously, each of the four support blocks 15 has an abutment protrusion 16 on one side. These four abutment protrusions 16 can slide and engage with the four mounting slots 20 within the adjacent router board unit 1, thereby abutting and pushing the corresponding abutment block 28. Consequently, when two adjacent router board units 1 are combined, the multiple L-shaped latches 8 can automatically engage and lock.

[0050] In this embodiment, the abutment block 28 and the abutment protrusion 16 have the same width, and the width of the mounting groove 20 is twice the width of the abutment block 28. Its function is to allow the two abutment blocks 28 to be offset from the adjacent abutment protrusion 16 in the mounting groove 20 when the two adjacent sliding seats 21 are pushed to move closer to each other, so that the two abutment blocks 28 can be automatically reset and unlocked under the drive of the torsion spring 26.

[0051] This application can be used in the field of router board technology, or in other fields applicable to this application.

[0052] In another embodiment: Reference Figure 2 , 3 4. A router board component that supports modular expansion, which is applied to the field of router board technology;

[0053] In this embodiment, fixing protrusions 9 and fixing plates 10 are fixedly installed on both inner walls of the expansion box 2. The two fixing plates 10 are located above the adjacent fixing protrusions 9, and the bottom of the two fixing plates 10 forms a positioning groove 11 between the top of the adjacent fixing protrusions 9. The PCB board of the router board body 3 slides and engages with the inner walls of the two positioning grooves 11 on both sides, which ensures that the router board body 3 can be stably installed inside the corresponding expansion box 2.

[0054] In this embodiment, two fixing blocks 12 are fixedly installed on the top inner wall of the expansion box 2. Both fixing blocks 12 are located above the adjacent fixing plates 10. Threaded holes are opened at one end of both fixing blocks 12 and the two adjacent fixing protrusions 9. Through holes are opened on the panel of the router board body 3 near the four corners. Multiple through holes correspond to the corresponding threaded holes and are used to cooperate with external screws to fix the router board body 3.

[0055] In this embodiment, the four sides of the ring frame 4 are provided with uniformly arranged mesh holes. These mesh holes enable the interior of the ring frame 4 to form a heat dissipation cavity. The top plate 5 and the top and bottom of the expansion box 2 are provided with multiple ventilation holes 6. The multiple ventilation holes 6 cooperate with each other to realize the communication between the interior of the expansion box 2 and the adjacent heat dissipation cavity, ensuring that the heat dissipation effect of multiple router board units 1 is good after stacking and combining.

[0056] In this embodiment, filters are provided on the planes corresponding to the multiple inner walls of the annular frame 4 and the multiple ventilation holes 6 to reduce the accumulation of dust inside the equipment.

[0057] The working principle and usage process of this technical solution are as follows: During use, push the router board body 3 into the expansion box 2. The edges of the PCB boards on both sides of the router board body 3 slide along the positioning grooves 11 on the inner walls of both sides of the expansion box 2 until they reach the predetermined position. At this time, the through holes on the panel of the router board body 3 are aligned with the threaded holes on the fixing blocks 12 on the top inner wall of the expansion box 2 and the fixing protrusions 9 on the bottom. Using external screws passed through the through holes on the panel and screwed into the corresponding threaded holes, the router board body 3 can be fixed inside the expansion box 2.

[0058] When performing modular expansion, take an expansion box 2 with an installed router board main body 3 as the basic unit. Place another identical router board unit 1 on top of it, so that the four support blocks 15 at the bottom of the upper expansion box 2 are aligned with the mounting slots 20 on the concave surface of the docking plate 7 of the lower unit and slid in. At this time, the abutment protrusions 16 on the side of the support block 15 also enter the mounting slots 20.

[0059] As the upper unit gradually lowers, the abutment protrusion 16 of its support block 15 contacts the abutment block 28 in the mounting groove 20 of the lower unit. Continuing to apply downward pressure, the abutment protrusion 16 pushes the abutment block 28 towards the outside of the mating plate 7. The movement of the abutment block 28 causes the fixing post 27 and the L-shaped latch 8 to rotate accordingly, and the bent end of the L-shaped latch 8 rotates and retracts towards the mating plate 7. During this process, the torsion spring 26 fitted on the fixing pin 24 is twisted, accumulating restoring force.

[0060] When the upper unit is fully seated on the lower unit, the bent end of the L-shaped buckle 8 will engage with the limiting groove 14 formed by the two limiting protrusions 13 of the upper unit, thus completing the vertical connection locking between the two router board units 1. Furthermore, the cooperation between the two support blocks 15 and the mounting groove 20 will also limit the horizontal position between two adjacent router board units 1, ensuring stable stacking of multiple router board units 1.

[0061] When a user needs to disassemble multiple router board units 1, the user only needs to move two adjacent sliding seats 21 closer together. At this time, the bent ends of the corresponding two L-shaped buckles 8 can slide in the corresponding limiting grooves 14 as the sliding seats 21 move. When the abutment block 28 moves to be offset from the adjacent abutment protrusion 16, under the action of the torsion spring 26, the corresponding two L-shaped buckles 8 can automatically unfold and reset. At this time, the bent ends of the two L-shaped buckles 8 can disengage from the corresponding limiting grooves 14, thereby unlocking one side of the adjacent router board unit 1.

[0062] When the device is working, heat is generated from the router board body 3. Multiple ventilation holes 6 are provided on the bottom and top of the expansion box 2. Combined with the mesh-covered ring frame 4, this ensures effective communication between the interior of the expansion box 2 and the outside environment. Furthermore, when the devices are stacked, multiple units can be connected sequentially to form a vertical heat dissipation channel, allowing hot air to flow and dissipate effectively throughout the assembly, facilitating long-term operation of the device.

[0063] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0064] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A router board component supporting modular expansion, characterized in that, include: Multiple router board units (1) are stacked sequentially to support modular expansion; The router board unit (1) includes an expansion box (2) and a router board body (3). The router board body (3) is slidably disposed in the expansion box (2). The expansion box (2) has an annular frame (4) and a top plate (5) on its top. The annular frame (4) is fixed to the top of the expansion box (2), and the top plate (5) is fixed to the top of the annular frame (4). The engaging assembly includes two mating plates (7) fixed to the top of the top plate (5), and two L-shaped buckles (8) are provided on the opposite side of each of the two mating plates (7); two limiting protrusions (13) are fixed to the outer wall of the expansion box (2), and two adjacent limiting protrusions (13) form a limiting groove (14). The L-shaped buckles (8) engage with the limiting groove (14) of the adjacent expansion box (2) above, so as to realize the connection and locking of the two adjacent router board units (1) without the need for bolt fixing.

2. The router board assembly supporting modular expansion according to claim 1, characterized in that, The locking assembly also includes an adjusting groove (17) disposed in the two mating plates (7). A fixing rod (18) is fixedly connected in the adjusting groove (17). Two sliders (22) are slidably disposed in the adjusting groove (17). The two sliders (22) are slidably sleeved on the outer wall of the fixing rod (18). A spring (19) is sleeved on the outer wall of the fixing rod (18). The two ends of the spring (19) abut against the two sliders (22) through spring seats respectively. A sliding seat (21) is fixedly connected to one side of the slider (22). The L-shaped buckle (8) cooperates with the sliding seat (21).

3. The router board assembly supporting modular expansion according to claim 2, characterized in that, The locking assembly also includes two mounting brackets (23) fixed to one side of the sliding seat (21). Two fixing ears (25) are fixed to one side of the L-shaped buckle (8). The fixing ears (25) are close to the mounting brackets (23) and are arranged crosswise with the mounting brackets (23). The same fixing pin (24) passes through the two adjacent mounting brackets (23). The fixing ears (25) are rotatably sleeved on the outer wall of the fixing pin (24). A torsion spring (26) is sleeved on the outer wall of the fixing pin (24). The two ends of the torsion spring (26) are fixed to the fixing ears (25) and the mounting brackets (23) respectively through spring seats, so that the L-shaped buckle (8) remains open when it is not subjected to external force.

4. The router board assembly supporting modular expansion according to claim 1, characterized in that, The locking assembly also includes a fixing post (27) fixed to the L-shaped buckle (8) away from the bent end. An abutment block (28) is fixed to one side of the fixing post (27), and the abutment block (28) faces the docking plate (7). The docking plate (7) has a concave surface near the bottom end. Two mounting slots (20) are opened on one side of the concave surface. The abutment block (28) is located in the mounting slot (20). Four support blocks (15) are fixed to the bottom of the expansion box (2). An abutment protrusion (16) is provided on one side of the support block (15). The abutment protrusion (16) slides with the mounting slot (20) of the adjacent router board unit (1) to push the abutment block (28) so that the L-shaped buckle (8) automatically engages.

5. The router board assembly supporting modular expansion according to claim 1, characterized in that, The inner walls on both sides of the expansion box (2) are fixed with a fixing protrusion (9) and a fixing plate (10). The fixing plate (10) is located above the fixing protrusion (9). The bottom of the fixing plate (10) and the top of the fixing protrusion (9) form a positioning groove (11). The two sides of the PCB board of the router board body (3) slide with the positioning groove (11) to ensure that the router board body (3) is stably installed.

6. The router board assembly supporting modular expansion according to claim 5, characterized in that, The top inner wall of the expansion box (2) is fixed with two fixing blocks (12). The fixing blocks (12) are located above the fixing plate (10). One end of the fixing blocks (12) and the fixing protrusion (9) is provided with threaded holes. The router board body (3) panel is provided with through holes near the four corners. The through holes correspond to the threaded holes and are used to fix the router board body (3) with screws.

7. The router board assembly supporting modular expansion according to claim 1, characterized in that, The annular frame (4) has uniformly arranged mesh holes on its four sides, forming a heat dissipation cavity inside the annular frame (4). The top plate (5) and the top and bottom of the expansion box (2) are provided with multiple ventilation holes (6). The ventilation holes (6) work together to connect the interior of the expansion box (2) with the heat dissipation cavity, ensuring good heat dissipation after stacking.

8. The router board assembly supporting modular expansion according to claim 4, characterized in that, The abutment block (28) and the abutment protrusion (16) have the same width, and the width of the mounting groove (20) is twice the width of the abutment block (28). When two adjacent sliding seats (21) are pushed closer to each other, the abutment block (28) is offset from the abutment protrusion (16) in the mounting groove (20), and the L-shaped buckle (8) is automatically reset and unlocked under the drive of the torsion spring (26).

9. The router board assembly supporting modular expansion according to claim 7, characterized in that, The inner wall of the annular frame (4) and the plane corresponding to the multiple ventilation holes (6) are all equipped with filters to reduce the accumulation of dust inside the equipment.

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