Communication board and communication equipment

Abstract

The present application provides a communication board and communication equipment. The communication board is pluggable and arranged in a slot of the communication equipment. The communication board includes a shell, a connector, a transmission assembly and an anti-backflow assembly. Part of the structure of the connector is arranged in the cavity of the shell and can move relative to the shell. The anti-backflow assembly is arranged on the outside of the side wall of the shell and is connected to the transmission assembly. The transmission assembly is arranged in the cavity and is connected to the connector. The transmission assembly is used to drive the anti-backflow assembly to rotate to a closed state or an open state during the process of plugging and unplugging the communication board in the slot. The anti-backflow assembly closes the slot adjacent to the communication board when in the open state. The communication board of the present application can help improve the applicability of the communication board while solving the problem of wind backflow caused by the communication board being pulled out.

Description

Technical Field

[0001] The present application relates to the technical field of communication equipment, and in particular to a communication board and communication equipment. Background Art

[0002] Communications equipment typically includes a chassis housing multiple communication boards. These boards are installed in a pre-defined manner in the chassis's multiple slots to implement communications. The components on these boards generate heat during operation. Heat sinks are located on one side of the boards within the chassis to dissipate heat from these components, ensuring proper operation of the equipment.

[0003] In network communication services, when a communication board is maintained or replaced, the communication board needs to be pulled out from the slot. After the board is pulled out, an empty slot appears in the communication equipment, and the empty slot forms an air duct. In this way, most of the air volume or airflow used for heat dissipation in the communication equipment is blown out from the air duct, thereby affecting the heat dissipation air duct of the communication equipment, and may cause malfunctions in the operation of other communication boards or communication equipment in the chassis, that is, causing the problem of air backflow after the communication board is pulled out.

[0004] However, as communication equipment places increasingly stringent requirements on heat dissipation, how to achieve air backflow caused by removing a communication board has become a problem that must be solved. Summary of the Invention

[0005] The present application provides a communication board and communication equipment, which can help improve the applicability of the communication board while solving the problem of air backflow caused by pulling out the communication board.

[0006] In a first aspect, an embodiment of the present application provides a communication board that is pluggable and disposed in a slot of a communication device. The communication board includes a housing, a connector, a transmission assembly, and a backflow prevention assembly. The housing has a hollow cavity, and a portion of the connector is disposed in the cavity and is movable relative to the housing. The transmission assembly is disposed in the cavity and is connected to the connector.

[0007] The anti-backflow assembly is arranged on the outside of the side wall of the shell and is connected to the transmission assembly. The anti-backflow assembly can be driven by the transmission assembly to rotate relative to the shell. The transmission assembly is used to drive the anti-backflow assembly to rotate to a closed state or an open state during the process of inserting and removing the communication board in the slot. When the anti-backflow assembly is in the open state, it closes the slot adjacent to the communication board.

[0008] The embodiment of the present application arranges a connector, a transmission assembly and an anti-backflow assembly on a communication board. Since part of the structure of the connector is arranged in the cavity, it is connected to the transmission assembly and can move relative to the shell. In this way, when the communication board is inserted into the slot, the part of the structure of the connector arranged outside the cavity can be blocked by the communication equipment or other communication boards. The connector can move relative to the shell, thereby driving the anti-backflow assembly to rotate to an open state through the transmission assembly to close the slot adjacent to the communication board (i.e., the empty slot), so as to avoid most of the air volume of the heat dissipation device from being blown out from the slot adjacent to the communication board, thereby playing a role in preventing wind backflow, thereby meeting the requirements of the communication equipment for heat dissipation performance. At the same time, when the communication board is plugged in or out of the slot, the transmission assembly drives the anti-backflow assembly to rotate to a closed state or an open state. This allows the communication board to be suitable for communication equipment with various plug-in and pull-out postures, while solving the problem of wind backflow caused by the communication board being pulled out. It can also help improve the applicability of the communication board. On the other hand, it can realize the automatic opening or closing of the anti-backflow assembly on the communication board, so that the use of the communication board will not be affected by human factors and will not affect the plug-in and pull-out experience of the communication board.

[0009] In a possible implementation, the backflow prevention assembly includes an anti-backflow plate, which is connected to the transmission assembly and is configured to rotate relative to the housing to a closed state or an open state under the drive of the transmission assembly.

[0010] In this way, during or after the communication board is inserted into the slot, the backflow plate, driven by the transmission assembly, can rotate relative to the housing to an open position. The backflow plate seals the slot adjacent to the communication board within the communication device, preventing wind backflow and thus meeting the communication device's heat dissipation requirements. At the same time, because the backflow plate, driven by the transmission assembly, can rotate relative to the housing to a closed position, the transmission assembly can control the automatic opening and closing of the backflow plate while also preventing the communication board from being scratched during insertion and removal.

[0011] In a possible implementation, in a closed state, the backflow prevention plate is parallel to and in contact with the top wall of the housing; in an open state, the backflow prevention plate is opened at a preset angle relative to the top wall.

[0012] By aligning the backflow plate parallel to and in contact with the top wall of the housing, the structure of the communication board and the communication device can be made more compact, while also limiting the rotation of the backflow plate via the top wall of the housing. Furthermore, by opening the backflow plate at a predetermined angle relative to the top wall, the backflow plate can seal the slot adjacent to the communication board within the communication device.

[0013] In a possible implementation, the backflow prevention assembly further includes a mounting member, the backflow prevention plate is provided on the mounting member, and is connected to the transmission assembly via the mounting member. The mounting member can rotate synchronously with the backflow prevention plate under the drive of the transmission assembly.

[0014] In this way, the mounting piece can facilitate the backflow prevention plate to be fixed on the mounting piece, and can drive the backflow prevention plate to rotate through the mounting piece under the drive of the transmission component, so that the automatic opening or closing of the backflow prevention plate can be controlled by the transmission component.

[0015] In one possible implementation, the backflow prevention plate is fixed to the side of the mounting member facing away from the cavity. This ensures that the backflow prevention plate can rotate under the drive of the transmission assembly, facilitates the connection between the mounting member and the transmission assembly, and helps improve the aesthetics of the communication board.

[0016] In a possible implementation, when the communication board moves relative to the slot, the backflow prevention assembly is in a closed state relative to the housing, thereby preventing the communication board from being scratched during insertion and removal.

[0017] In one possible implementation, the connector has an abutment portion, the shell is provided with an opening through which the connector can extend, and the abutment portion extends out of the opening; during the process of inserting and removing the communication board in the slot, the abutment portion abuts against the communication equipment or other communication boards, and drives the connector to move relative to the shell.

[0018] In this way, through the setting of the abutment part, the communication board can abut against the communication equipment or other communication boards during the plugging and unplugging process, thereby realizing the movement of the connecting part relative to the shell, and then driving the anti-backflow component to rotate to a closed state or an open state through the transmission component, thereby solving the above-mentioned air backflow problem and improving the heat dissipation performance of the communication equipment.

[0019] In one possible implementation, a position-limiting member is provided within the cavity to limit the opening angle of the backflow prevention assembly. This allows the backflow prevention assembly to rotate relative to the housing, driven by the transmission assembly, by changing the position of the position-limiting member within the cavity to limit and precisely control the opening angle of the backflow prevention plate. This allows for precise control of the area of ​​wind backflow prevention, helping to improve the stability of the wind backflow prevention effect and thereby meet the higher heat dissipation requirements of communication equipment.

[0020] In a possible implementation, a mounting base is further included, and the transmission assembly is arranged in the cavity through the mounting base. In this way, the transmission assembly can be installed and fixed in the cavity through the mounting base.

[0021] In one possible implementation, the direction of movement of the connector relative to the housing is the same as the direction in which the slot extends. This allows the connector to move linearly relative to the housing along the direction in which the slot extends, thereby driving the backflow prevention assembly to rotate relative to the housing via the transmission assembly, thereby resolving the aforementioned backflow problem.

[0022] In one possible implementation, the transmission assembly is a gear transmission assembly, which includes a rack and a first gear, wherein a first end of the rack is connected to the connecting member, and a second end of the rack is elastically connected to the mounting base and is movable relative to the mounting base;

[0023] The first gear is engaged with the rack and rotates driven by the rack. The driving force of the first gear is used to drive the backflow prevention component to rotate.

[0024] Thus, when the connecting member moves relative to the housing, the rack is connected to the connecting member and can move relative to the mounting base, so the connecting member can drive the rack to move synchronously. Since the first gear is engaged with the rack, the first gear can also rotate under the drive of the rack, thereby driving the backflow prevention assembly to rotate relative to the housing, thereby causing the backflow prevention assembly to rotate relative to the housing to a closed state or an open state, thereby preventing wind backflow.

[0025] In one possible implementation, the gear transmission assembly also includes a second gear and a first elastic connector, the second gear and the first gear are meshed, and the two ends of the first elastic connector are respectively arranged on the second gear and the anti-backflow assembly to drive the anti-backflow assembly to rotate under the drive of the second gear.

[0026] In this way, when the first gear rotates driven by the rack, the second gear also rotates synchronously in the opposite direction. Since the two ends of the first elastic connector are respectively arranged on the second gear and the anti-backflow component, the anti-backflow component can rotate synchronously with the second gear under the drive of the first elastic connector. At the same time, since the rotation of the anti-backflow component is driven by the action of the first elastic connector, the ability of the anti-backflow component to withstand external forces in the open state is only related to the first elastic connector. Therefore, the embodiment of the present application can achieve precise control of the minimum external force that the anti-backflow component can withstand by setting the external force (i.e., torque) of the first elastic connector, which can help to improve the stability of the wind backflow prevention effect to further meet the higher heat dissipation requirements of communication equipment.

[0027] In a possible implementation, the first elastic connecting member is a torsion spring, which is passed through the rotating shaft of the second gear, and two ends of the torsion spring are respectively in contact with the second gear and the backflow prevention assembly.

[0028] In this way, when the second gear rotates, the torsion spring can be used to drive the backflow prevention assembly to rotate relative to the housing.

[0029] In one possible implementation, the first gear is a full gear and the second gear is a partial gear. This allows the transmission assembly to transmit power, and the provision of partial gears can, on the one hand, make the communication board more compact, and on the other hand, reduce the manufacturing costs of the transmission assembly and the communication board.

[0030] In a possible implementation, the first end of the rack is engaged with the connector, and the second end of the rack is connected to the mounting base 27 via a tension spring; the rack is slidably connected to the mounting base.

[0031] This snap-fit ​​connection allows the rack to move synchronously with the connector on the mounting base. Furthermore, the sliding connection between the rack and the mounting base facilitates the rack's relative movement, driven by the connector. Furthermore, the tension spring allows the backflow prevention assembly to rotate to a closed position when the communication board is removed from its slot.

[0032] In one possible implementation, a stopper is provided on the mounting base and located along the movement path of the backflow prevention assembly, and is used to limit the opening angle of the backflow prevention assembly. Thus, when the backflow prevention assembly rotates relative to the housing under the drive of the first elastic connector, the stopper can prevent further rotation of the backflow prevention assembly, thereby limiting and precisely controlling the opening angle of the backflow prevention assembly.

[0033] In one possible implementation, a first elastic member is further provided between the connector and the housing, with one end of the first elastic member abutting against the connector and the other end abutting against the inner wall of the housing. Thus, the first elastic member can ensure that the connector is positioned in its initial installation position.

[0034] In one possible implementation, the transmission assembly is a connecting rod transmission assembly, the connecting rod transmission assembly includes a transmission member and a connecting rod group, the connecting rod group includes a first connecting rod, a first rotating shaft is provided between the first end and the second end of the first connecting rod, the first connecting rod is rotatably connected to the shell through the first rotating shaft, the first end of the first connecting rod is used to receive the force of the transmission member, the second end of the first connecting rod is connected to the anti-backflow assembly, and the first connecting rod can drive the anti-backflow assembly to rotate under the drive of the transmission member.

[0035] In this way, when the first connecting rod receives the force of the transmission member, the first connecting rod can rotate around the first rotating shaft on the shell. Since the second end of the first connecting rod is connected to the anti-backflow assembly, the anti-backflow assembly can be driven by the first connecting rod to rotate, so that the anti-backflow assembly rotates relative to the shell to a closed state or an open state, thereby preventing wind backflow.

[0036] In one possible implementation, the connecting rod group includes a second connecting rod and a third connecting rod, the first end of the second connecting rod is hinged to the first end of the first connecting rod, the second end of the second connecting rod is hinged to the first end of the third connecting rod, the second end of the third connecting rod is hinged to the housing, and the transmission member is connected to the first end of the third connecting rod.

[0037] In this way, when the third connecting rod receives the force of the transmission member, the third connecting rod can rotate relative to the shell, thereby driving the first connecting rod to rotate around the first rotating shaft on the shell through the second connecting rod, and then driving the anti-backflow assembly to rotate through the first connecting rod.

[0038] In one possible implementation, the connecting rod transmission assembly further includes a second elastic member connected between the connecting rod assembly and the transmission member. Thus, by disposing the second elastic member between the connecting rod assembly and the transmission member, the transmission member can drive the anti-backflow assembly to rotate via the connecting rod assembly.

[0039] In one possible implementation, the movement of the connector relative to the housing is rotation. In this way, the connector can rotate relative to the housing, and then drive the anti-backflow assembly to rotate relative to the housing via the transmission assembly, thereby solving the above-mentioned air backflow problem.

[0040] In one possible implementation, the transmission assembly is a cam-rocker assembly, which includes a cam, a rocker, and a second elastic connecting member. The cam is provided at an end of the rocker and abuts against a first end of the connecting member, and is used to drive the rocker to rotate under the drive of the connecting member.

[0041] Two ends of the second elastic connecting member are respectively arranged on the swing rod and the backflow prevention component, so as to drive the backflow prevention component to rotate under the drive of the swing rod.

[0042] Thus, when the connecting member rotates relative to the housing, the cam is provided at the end of the rocker arm and abuts against the end of the connecting member, so the rocker arm can rotate synchronously with the connecting member. At the same time, because the ends of the second elastic connecting member are respectively provided on the rocker arm and the backflow prevention assembly, when the rocker arm and the connecting member rotate synchronously, the backflow prevention assembly can be driven by the second elastic connecting member to rotate relative to the housing to a closed state or an open state.

[0043] In the second aspect, an embodiment of the present application provides a communication device, including a chassis and multiple communication boards of any one item. The chassis is provided with multiple slots, and the communication boards are pluggable and arranged in the slots. The communication boards can be used to close the slots adjacent to the communication boards in the communication device.

[0044] In this way, due to the arrangement of the connectors, transmission components and anti-backflow components on the communication board, when the communication board is inserted into and removed from the slot, the anti-backflow component can be in an open or closed state driven by the transmission component. On the one hand, it can achieve the closure of the slot adjacent to the communication board in the communication equipment, and solve the problem of wind backflow caused by the communication board being pulled out when the communication equipment is maintained or replaced; on the other hand, it can enable the communication board to be inserted into the slot of the communication equipment in a variety of plug-in and pull-out postures, which helps to improve the applicability of the communication board and can realize the automatic opening and closing of the anti-backflow component on the communication board, which helps to improve the plug-in and pull-out experience of the communication board and prevent misoperation.

[0045] In a possible implementation, when the communication board is pulled out of the slot, the communication board is in a closed state, and the communication boards adjacent to the communication board in the communication device can return from the closed state to the open state.

[0046] In this way, the problem of air backflow caused by pulling out a communication board during maintenance or replacement of the communication equipment is solved, and the communication board can meet the needs of various operating conditions of the communication equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0048] Figure 2 A schematic diagram of the structure of the communication board provided in Example 1 of the present application;

[0049] Figure 3 A schematic diagram of the process of removing a communication board from a full slot in a communication device provided in an embodiment of the present application;

[0050] Figure 4 A schematic diagram of the process of inserting a communication board into an empty slot in a communication device provided in an embodiment of the present application;

[0051] Figure 5 A schematic diagram of the process of inserting a communication board into two empty slots in a communication device according to an embodiment of the present application;

[0052] Figure 6 A schematic diagram of the process of removing a communication board from two empty slots in a communication device according to an embodiment of the present application;

[0053] Figure 7 This is a schematic diagram of the assembly of the communication board and the communication device provided in Example 1 of the present application;

[0054] Figure 8 This is a structural diagram of the anti-backflow plate assembly in the communication board provided in Example 1 of the present application in a closed state;

[0055] Figure 9A schematic diagram of the structure of the anti-backflow plate assembly in the communication board provided in Example 1 of the present application in an open state;

[0056] Figure 10 A partially exploded schematic diagram of a communication board provided in Example 1 of the present application;

[0057] Figure 11 This is a schematic structural diagram of the anti-backflow plate assembly in the communication board provided in Example 2 of the present application in a closed state;

[0058] Figure 12 A schematic diagram of the structure of the anti-backflow plate assembly in the communication board provided in the second embodiment of the present application in an open state;

[0059] Figure 13 A schematic diagram of the structure of some components within a communication board provided in Example 2 of the present application;

[0060] Figure 14 A schematic structural diagram of a backflow prevention plate assembly in a communication board in a closed state provided in Example 3 of the present application;

[0061] Figure 15 A schematic diagram of the structure of the anti-backflow plate assembly in the communication board provided in the third embodiment of the present application in an open state;

[0062] Figure 16 This is a structural diagram of some components within the communication board provided in Example 3 of the present application.

[0063] Description of reference numerals:

[0064] 100-communication equipment; 10-chassis; 11-slot; 12-blocking block;

[0065] 20 - Communication board; 21 - Housing; 211 - Frame; 212 - Top cover; 213 - Bottom plate; 214 - Limiting surface; 215 - Assembly part; 2151 - Slide; 22 - Anti-backflow assembly; 221 - Mounting part; 2211 - Mounting surface; 2212 - Connecting column; 222 - Anti-backflow plate; 23 - Connecting part; 231 - Slot; 232 - Abutment part; 233 - Slide groove; 24 - Gear transmission assembly; 241 - Rack; 2411 - Hook; 242 - First gear; 243 - Second gear; 244 - First elastic connecting part; 245 - fixed shaft; 246 - tension spring; 247 - first elastic member; 25 - connecting rod transmission assembly; 251 - transmission member; 252 - first connecting rod; 2521 - limiting groove; 253 - second connecting rod; 254 - third connecting rod; 255 - first rotating shaft; 256 - second elastic member; 257 - third elastic member; 26 - cam rocker assembly; 261 - rocker; 262 - cam; 263 - second elastic connecting member; 264 - third elastic connecting member; 265 - second rotating shaft; 266 - third rotating shaft; 27 - mounting base; 28 - limiting member;

[0066] 30-Heat dissipation device. DETAILED DESCRIPTION

[0067] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0068] Industrial Communication Devices (ICDs) primarily include wired and wireless communication devices used in industrial control environments. Typically, a communication device primarily includes multiple communication boards, which are installed within the device via multiple slots within the device. These boards implement the device's communication functions. As is well known, a communication board typically includes multiple communication components, which generate heat during operation. This heat can significantly impact the lifespan of these components. In the prior art, a heat dissipation device is typically included within the communication device. This device can blow a cooling airflow, such as cold air, from one side of the communication board. This airflow can be evenly distributed across the board through the heat dissipation channels within the device and discharged from the other side of the board through the air outlet on the board. This removes heat from the board and the device, dissipating heat from the components on the board. This ensures the proper heat dissipation of the board and the device, ensuring proper operation of the device.

[0069] In the prior art, it is often necessary to perform regular maintenance or replacement on the communication boards in the communication equipment. When maintaining or replacing the communication boards in the communication equipment, it is necessary to pull the communication boards out of the slots in the communication equipment. At this time, there will be at least one empty slot (i.e., an empty slot) in the communication equipment. The empty slots in the communication equipment form an air duct in the communication equipment, which destroys the original heat dissipation channel in the communication equipment, causing most of the air volume or airflow used for heat dissipation in the communication equipment to be blown out from the air duct, affecting the original heat dissipation air duct of the communication equipment. The air volume used for heat dissipation cannot flow evenly to each communication board, making it impossible to eliminate the heat of other communication boards in the communication equipment. The operation of the communication equipment fails, causing the problem of air backflow after the communication board is pulled out.

[0070] However, as communication equipment places increasingly stringent requirements on heat dissipation, how to achieve air backflow caused by removing a communication board has become a problem that must be solved.

[0071] Therefore, the embodiments of the present application provide a communication board and a communication device, which can help improve the applicability of the communication board while solving the problem of air backflow caused by the communication board being pulled out.

[0072] Figure 1 This is a schematic diagram of the structure of the communication device provided in the embodiment of the present application. Figure 1 As can be seen in the figure, the communication device 100 may include a chassis 10 and a plurality of communication boards 20. The chassis 10 is provided with a plurality of slots 11, and the communication boards 20 are pluggable and arranged in the slots 11. Among them, the communication board 20 may correspond to a slot 11 on the chassis 10. The communication board 20 may be used to close the slot 11 adjacent to the communication board 20 in the communication device 100. In this way, when the communication board 20 needs to be maintained or replaced and is pulled out from the slot 11 of the communication device 100, so that an empty slot 11 appears in the chassis 10, the communication board 20 adjacent to the empty slot 11 in the communication device 100 can close the empty slot 11, thereby solving the problem of air backflow caused by the removal of the communication board 20 when the communication device 100 is being maintained or replaced, so as to meet the heat dissipation performance of the communication board 20 and the communication device 100, and ensure the normal operation of the communication device 100.

[0073] Among them, multiple communication boards 20 can be arranged in parallel in slots 11 for plugging and unplugging. This makes the arrangement of the communication boards 20 in the chassis 10 more regular and neat, while helping to maximize the space utilization of the chassis 10. For example, the communication boards 20 can be plugged into the slots 11 in a horizontal, vertical, inclined, or other posture. Accordingly, the slots 11 on the chassis 10 match the plugging and unplugging posture of the communication boards 20. In this embodiment, the plugging and unplugging posture of the communication boards 20 relative to the communication device 100 is not further limited.

[0074] Specifically, the chassis 10 is provided with slide rails (not shown) in the slot 11 for the communication board 20 to slide in. In this way, the opposite sides of the communication board 20 can be slidably arranged in the slide rails, making it easier to insert and remove the communication board 20 relative to the slot 11.

[0075] refer to Figure 1 As shown, the communication device 100 may include a heat sink 30. The heat sink 30 may be disposed within the chassis 10 and located on one side of the communication board 20 to better dissipate heat from the communication components on the communication board 20 and the interior of the chassis 10. The heat sink 30 may be disposed on one side of the communication board 20, dissipating heat from the communication board 20 in a manner where air enters from one side of the communication board 20 and exits from the other side. Alternatively, the heat sink 30 may be disposed between the top wall of the chassis 10 and the communication board 20, dissipating heat from the communication board 20 in a manner where air enters from the top of the communication board 20 and exits from the bottom. In this embodiment, the air intake and exhaust methods of the heat sink 30 are not further limited, as long as the heat sink 30 can distribute the heat dissipation channels within the communication device 100 as evenly as possible within the communication board 20.

[0076] The heat dissipation device 30 may further include an exhaust structure, which can accelerate the heat dissipation process of the communication device 100. For example, the exhaust structure may be an exhaust fan or other suction structure. For example, the heat dissipation device 30 may be a heat dissipation fan with a suction structure or an air conditioner.

[0077] The communication board 20 can be inserted into the slot 11 horizontally, vertically, diagonally, or in other positions, all of which can solve the problem of air backflow caused by removing the communication board 20 during maintenance or replacement of the communication device 100. In this embodiment, there is no further limitation on the insertion position of the communication board 20 relative to the communication device 100.

[0078] The communication device 100 and the communication board 20 in the embodiment of the present application will be further described below by taking the vertical insertion posture of the communication board 20 as an example.

[0079] Figure 2 A schematic diagram of the structure of the communication board provided in the embodiment of the present application is provided. Figure 3 This is a schematic diagram of the process of removing a communication board from a full slot in a communication device provided by an embodiment of the present application. Figure 4 A schematic diagram of the process of inserting a communication board into an empty slot in a communication device provided in an embodiment of the present application is provided. Figure 5 Schematic diagram of the process of inserting a communication board into two empty slots in a communication device provided in an embodiment of the present application. Figure 6Schematic diagram of the process of removing the communication board from the two empty slots in the communication equipment provided in an embodiment of the present application.

[0080] When the communication board 20 is removed from the slot 11, it can be closed, and the adjacent communication boards 20 in the communication device 100 can be opened. This solves the problem of air backflow caused by removing the communication board 20 during maintenance or replacement of the communication device 100, while also enabling the communication board 20 to meet the needs of various operating conditions of the communication device 100.

[0081] The following further describes the status of the communication board 20 during insertion and removal from the slot 11 according to different usage conditions within the communication device 100 .

[0082] from Figures 2 to 6 As can be seen in the figure, the communication board 20 may include a housing 21 and a backflow prevention assembly 22. The backflow prevention assembly 22 is disposed on the outer side of the side wall of the housing 21 so that the backflow prevention assembly 22 can be in an open or closed state relative to the housing 21. It should be understood that the closed state of the communication board 20 can be regarded as the closed state of the backflow prevention assembly 22 relative to the housing 21. Correspondingly, the open state of the communication board 20 can be regarded as the open state of the backflow prevention assembly 22 relative to the housing 21.

[0083] refer to Figure 3 As shown, the communication board 20 is pluggable and disposed in the slot 11 of the communication device 100. Figure 3 It can be seen that multiple communication boards 20 are all plugged into the corresponding slots 11 of the communication device 100, that is, the communication device 100 is in a state where the slots 11 are full (normal state). The communication device 100 is provided with 6 communication boards 20, and the 6 communication boards 20 are plugged into the slots 11 of the chassis 10 in parallel from left to right, namely communication board 20a, communication board 20b, communication board 20c, communication board 20d, communication board 20e and communication board 20f. For example, when the communication board 20c is pulled out of the slot 11, the anti-backflow component 22 of the communication board 20c can be in a closed state relative to the housing 21, that is, the anti-backflow component 22 of the communication board 20c can be automatically closed to avoid the need to manually close the anti-backflow component 22, which affects the plug-in and unplug experience of the communication board 20. After the communication board 20c is pulled out, the external force acting on the anti-backflow component 22 of the communication board 20d disappears, and the anti-backflow component 22 of the communication board 20d can automatically return to the open state from the closed state, so that the slot 11 corresponding to the communication board 20c can be closed by the anti-backflow component 22 on the communication board 20d, thereby solving the wind backflow problem caused by the communication board 20 being pulled out, and meeting the heat dissipation performance requirements of the communication equipment 100.

[0084] On the contrary, reference Figure 4 As shown, when the communication board 20c is inserted into the slot 11, since the communication device 100 is in a full slot 11 state, the anti-backflow component 22 of the communication board 20c can be in a closed state under the action of an external force such as the communication board 20b, and the anti-backflow component 22 of the communication board 20d adjacent to the communication board 20c in the communication device 100 can automatically return from the open state to the closed state under the action of an external force such as the communication board 20c.

[0085] refer to Figure 5 As shown, the communication board 20c can also be pluggable and arranged in the chassis 10 of the communication device 100 having two empty slots 11. Figure 5 As can be seen, there are two empty slots 11 between communication board 20b and communication board 20d. The backflow prevention assembly 22 of communication board 20d is in an open position relative to the housing 21, thereby sealing the empty slot 11 between communication board 20b and communication board 20d. At this point, most of the airflow from the heat sink 30's outlet can pass through the slot 11 between communication board 20b and communication board 20d and exit the chassis 10, causing a backflow problem. For example, when communication board 20c is inserted into the slot 11 between communication board 20b and communication board 20d, the backflow prevention assembly 22 of communication board 20c can automatically open relative to the housing 21, sealing the slot 11 between communication board 20b and communication board 20d. At the same time, the backflow prevention assembly 22 of communication board 20d can automatically return from the open position to the closed position under the influence of an external force, such as that applied by communication board 20c.

[0086] On the contrary, reference Figure 6 As shown, when the communication board 20c is pulled out from the slot 11, the external force acting on the anti-backflow component 22 of the communication board 20d disappears, and the anti-backflow component 22 of the communication board 20d can automatically return from the closed state to the open state to block the slot 11 between the communication board 20b and the communication board 20d near the communication board 20d.

[0087] It should be noted that before the communication board 20 is inserted into any slot 11, the backflow prevention assembly 22 of the communication board 20 can remain closed. The communication board 20 in the embodiments of the present application has various structures. In other words, there is no single structure of the communication board 20 that satisfies the various operating conditions described above.

[0088] The communication board 20 in the embodiment of the present application will be further described below in combination with different embodiments.

[0089] Example 1

[0090] Figure 7This is a schematic diagram of the assembly of the communication board and the communication device provided in Example 1 of the present application. Figure 8 This is a structural diagram of the anti-backflow plate assembly in the communication board provided in Example 1 of the present application in a closed state. Figure 9 This is a structural diagram of the anti-backflow plate assembly in the communication board provided in Example 1 of the present application in an open state. Figure 10 This is a partially exploded schematic diagram of the communication board provided in Example 1 of the present application.

[0091] refer to Figures 7 to 10 As shown, an embodiment of the present application provides a communication board 20. In addition to the shell 21 and the anti-backflow assembly 22, the communication board 20 may also include a connector 23 and a transmission assembly. The shell 21 has a hollow cavity (not shown in the figure), and the cavity is used to install heat-generating components such as circuit boards and other modules of the communication board 20. Part of the structure of the connector 23 can be arranged in the cavity and can be moved relative to the shell 21; the transmission assembly is arranged in the cavity and connected to the connector 23. This can facilitate the arrangement of the transmission assembly and the connector 23 in the shell 21.

[0092] The backflow prevention assembly 22 can be located outside the sidewall of the housing 21 and connected to the transmission assembly. The backflow prevention assembly 22 can be driven by the transmission assembly to rotate relative to the housing 21. This facilitates the rotation of the backflow prevention assembly 22 to one side of the housing 21 under the drive of the transmission assembly, thereby facilitating the sealing of the slot 11 adjacent to the communication board 20. The transmission assembly is used to drive the backflow prevention assembly 22 to rotate between a closed state and an open state during the insertion and removal of the communication board 20 into the slot 11. In the open state, the backflow prevention assembly 22 seals the slot 11 adjacent to the communication board 20.

[0093] In the embodiment of the present application, the connection member 23, the transmission assembly and the anti-backflow assembly 22 are arranged on the communication board 20. Since part of the structure of the connection member 23 is arranged in the cavity, it is connected to the transmission assembly and can move relative to the housing 21. In this way, when the communication board 20 is inserted into the slot 11, the part of the structure of the connection member 23 outside the cavity can be blocked by the communication device 100 or other communication boards 20 (such as Figure 7 ), the connector 23 can move relative to the housing 21, thereby driving the backflow prevention component 22 to rotate to the open state through the transmission component to close the slot 11 adjacent to the communication board 20 (i.e., the empty slot), so as to prevent most of the air volume of the heat dissipation device 30 from being blown out from the slot 11 adjacent to the communication board 20, thereby playing a role in backflow prevention, thereby meeting the heat dissipation performance requirements of the communication equipment 100.

[0094] At the same time, when the communication board 20 is plugged in or out of the slot 11, the anti-backflow component 22 is driven by the transmission component to rotate to a closed state or an open state. This can, on the one hand, enable the communication board 20 to be suitable for communication equipment 100 with various plug-in and pull-out postures, while solving the problem of wind backflow caused by the communication board 20 being pulled out, and can help improve the applicability of the communication board 20. On the other hand, it can realize the automatic opening or closing of the anti-backflow component 22 on the communication board 20, so that the use of the communication board 20 will not be affected by human factors, and will not affect the plug-in and pull-out experience of the communication board 20.

[0095] It should be noted that the reference Figure 7 As shown, a blocking block 12 adapted to the connector 23 may also be provided at the end or inside of the slot 11. The blocking block 12 is adapted to the connector 23 and is used to contact and block the connector 23 during the insertion of the communication board 20 into the slot 11, thereby forcing the connector 23 to move relative to the housing 21, thereby driving the anti-backflow assembly 22 to rotate to an open state via the transmission assembly. The blocking block 12 can be understood as a structure on the slot 11 or the communication device 100 that can block the movement of the connector 23 (such as the corner formed by the chassis 10 at the opening of the slot 11), or the blocking block 12 can be integrally formed on the slot 11 or the communication device 100. In this embodiment, the structure and position of the blocking block 12 are not further limited, as long as the blocking block 12 can block the connector 23 during the normal insertion of the board into the slot 11.

[0096] refer to Figures 7 to 10 As shown, the backflow prevention assembly 22 may include a backflow prevention plate 222, which may be connected to the transmission assembly and configured to rotate relative to the housing 21 to a closed state or an open state under the drive of the transmission assembly. In this way, when the communication board 20 is inserted into the slot 11 or after it is inserted into the slot 11, the backflow prevention plate 222 may be driven by the transmission assembly to rotate relative to the housing 21 to an open state, thereby sealing the slot 11 adjacent to the communication board 20 in the communication device 100 through the backflow prevention plate 222, thereby preventing wind backflow, thereby meeting the heat dissipation requirements of the communication device 100. At the same time, since the backflow prevention plate 222 may be driven by the transmission assembly to rotate relative to the housing 21 to a closed state, the backflow prevention plate 222 may be automatically opened or closed by the transmission assembly, thereby improving the plugging and unplugging experience of the communication board 20 and preventing the communication board 20 from being scratched during the plugging and unplugging process, thereby providing a certain degree of protection for the communication board 20.

[0097] It should be understood that when the backflow plate 222 is in the open position relative to the housing 21, the projected area of ​​the backflow plate 222 within the slot 11 should be equal to, or slightly smaller than, the cross-sectional area of ​​the slot 11 in its extending direction. This facilitates the opening of the backflow plate 222 within the slot 11 and the sealing of the slot 11. This allows for precise control of the windproof area of ​​the backflow plate 222.

[0098] refer to Figure 8 As shown, in the closed state, the anti-backflow plate 222 is parallel to the top wall of the shell 21 and fits with the top wall, so that the anti-backflow plate 222 is in a retracted state relative to the shell 21, which can make the structure of the communication board 20 and the communication equipment 100 more compact, and can also limit the rotation of the anti-backflow plate 222 through the top wall of the shell 21.

[0099] Specifically, a limiting surface 214 may be provided on the top wall of the housing 21 to match the backflow prevention plate 222. For example, the limiting surface 214 may be an inner concave surface on the top wall of the housing 21. This allows for limiting the rotation of the backflow prevention plate 222 while also controlling the thickness of the communication board 20, thereby making the communication board 20 and the communication device 100 more compact.

[0100] refer to Figure 9 As shown, when in the open position, the backflow prevention plate 222 can be opened at a preset angle relative to the top wall. This allows the backflow prevention plate 222 to seal the slot 11 adjacent to the communication board 20 in the communication device 100. It should be understood that adjacent slots 11 of the communication device 100 should be interconnected, allowing the backflow prevention plate 222 of the communication board 20 to extend into the adjacent slot 11, thereby sealing the adjacent slot 11.

[0101] For further reference, Figures 8 to 10 As shown, the backflow prevention assembly 22 may further include a mounting member 221. The backflow prevention plate 222 is mounted on the mounting member 221 and connected to the transmission assembly via the mounting member 221. The mounting member 221 can be driven by the transmission assembly to rotate synchronously with the backflow prevention plate 222. This allows the backflow prevention plate 222 to be fixed to the mounting member 221 while being driven by the transmission assembly to rotate the backflow prevention plate 222 via the mounting member 221, thereby controlling the automatic opening or closing of the backflow prevention plate 222 via the transmission assembly.

[0102] The mounting member 221 may include a mounting surface 2211, and the backflow prevention plate 222 may be detachably fixed to the mounting surface 2211 by means of threads or snap-fitting, so as to facilitate removal and installation of the backflow prevention plate 222 and the mounting member 221. Alternatively, the backflow prevention plate 222 may be integrally formed on the mounting surface 2211, forming an integrated structure with the mounting member 221. In this embodiment, the method for fixing the backflow prevention plate 222 and the mounting member 221 is not further limited.

[0103] As a possible embodiment, the backflow prevention plate 222 can be fixedly mounted on the side of the mounting member 221 facing away from the cavity. In other words, the backflow prevention plate 222 can be fixedly mounted on the outside of the mounting member 221. This ensures that the backflow prevention plate 222 can rotate under the drive of the transmission assembly while facilitating the connection between the mounting member 221 and the transmission assembly, thereby improving the aesthetics of the communication board 20. Alternatively, the backflow prevention plate 222 can also be fixedly mounted on the side of the mounting member 221 closer to the cavity (i.e., the inside of the mounting member 221). In this embodiment, the relative position of the backflow prevention plate 222 and the mounting member 221 is not further limited.

[0104] The following takes the case where the anti-backflow plate 222 is fixedly installed on the outer side of the mounting member 221 as an example to further illustrate the communication board 20 in the embodiment of the present application.

[0105] Specifically, when the communication board 20 moves relative to the slot 11, the backflow prevention component 22 can be in a closed state relative to the housing 21 (eg, Figures 3 to 6 ). This prevents the communication board 20 from being scratched during insertion and removal. It should be understood that during insertion, when the connector contacts the blocking block 12 on the communication device 100 or another communication board 20, the connector moves relative to the housing 21, and the backflow prevention assembly 22 rotates relative to the housing 21 driven by the transmission assembly.

[0106] The connecting member 23 has an abutting portion 232, and the housing 21 has an opening (not shown in the figure) through which the connecting member 23 can extend. Figure 7The abutment portion 232 may extend out of the opening. During the process of inserting and removing the communication board 20 in the slot 11, the abutment portion 232 may abut against the communication device 100 or other communication boards 20, and drive the connection member 23 to move relative to the housing 21 until the frame 211 of the housing 21 contacts the communication device 100, such as the chassis 10, and stops. In this way, by setting the abutment portion 232, the communication board 20 can abut against the blocking block 12 on the communication device 100 or other communication boards 20 during the insertion and removal process, thereby realizing the movement of the connection member 23 relative to the housing 21, and then driving the anti-backflow component 22 to rotate to a closed state or an open state through the transmission component, thereby solving the above-mentioned wind backflow prevention problem and improving the heat dissipation performance of the communication device 100.

[0107] refer to Figures 8 to 10 As shown, the shell 21 may include a frame 211, a top cover 212, a bottom plate 213 and an assembly part 215. The top cover 212 and the bottom plate 213 are respectively covered on the top and bottom of the frame 211, and form a cavity in the shell 21 with the frame 211. The top cover 212 can form the top wall of the shell 21, and the bottom plate 213 can form the bottom wall of the shell 21. The connector 23 can be assembled in the mounting groove of the frame 211 through the assembly part 215, and can move relative to the assembly part 215 and the frame 211. Among them, the frame 211 can be provided with the above-mentioned opening for the abutting part 232 to extend out, so that the abutting part 232 abuts against the communication device 100 or other communication boards 20. The frame 211 can be provided with a slide groove 2151 in the opening and on the assembly part 215, and the connector 23 is located in the slide groove 2151 to facilitate the movement of the connector 23 relative to the shell 21. For example, the assembly part 215 can be as follows Figure 10 The "U" shaped groove shown in .

[0108] Furthermore, a position limiter 28 is provided within the cavity, which is used to limit the opening angle of the backflow prevention assembly 22. Thus, when the backflow prevention assembly 22 rotates relative to the housing 21 under the drive of the transmission assembly, the position of the position limiter 28 within the cavity can be changed to limit and precisely control the opening angle of the backflow prevention plate 222, thereby achieving precise control over the area of ​​wind backflow prevention, helping to improve the stability of the wind backflow prevention effect and thereby meeting the higher heat dissipation requirements of the communication device 100.

[0109] For example, the limiting member 28 may be a limiting post. When the backflow prevention assembly 22 rotates relative to the housing 21 under the drive of the transmission assembly, the limiting post can limit and block the end of the mounting plate to prevent the backflow prevention plate 222 and the mounting plate from continuing to rotate, thereby achieving the limitation and precise control of the opening angle of the backflow prevention plate 222.

[0110] Specifically, the communication board 20 may further include a mounting base 27, and the transmission assembly may be disposed in the cavity via the mounting base 27. In this way, the transmission assembly may be mounted and fixed in the cavity via the mounting base 27.

[0111] As a possible embodiment, the direction of movement of the connecting member 23 relative to the housing 21 is the same as the extension direction of the slot 11. In this way, the connecting member 23 can move linearly relative to the housing 21 along the extension direction of the slot 11, and then drive the backflow prevention assembly 22 to rotate relative to the housing 21 through the transmission assembly, thereby solving the above-mentioned air backflow problem.

[0112] Alternatively, as another possible embodiment, the movement of the connector 23 relative to the housing 21 is rotational. That is, the connector 23 can rotate relative to the housing 21 when in contact with the communication device 100 or another communication board 20, thereby driving the backflow prevention assembly 22 to rotate relative to the housing 21 via the transmission assembly. This allows for more diverse movement of the connector 23 relative to the housing 21, thereby further diversifying the structure of the communication board 20. The configuration of the transmission assembly and the connector 23 may also differ depending on the different movement modes of the connector 23.

[0113] The following further illustrates the communication board 20 of the present application through different embodiments, focusing on the different movement modes of the connector 23 relative to the housing 21. In the first and second embodiments, the connector 23 moves linearly relative to the housing 21, while in the third embodiment, the connector 23 moves rotationally relative to the housing 21.

[0114] from Figures 8 to 10 As can be seen in the figure, in this embodiment, the transmission assembly can be a gear transmission assembly 24. The gear transmission assembly 24 can include a rack 241 and a first gear 242. The first end of the rack 241 can be connected to the connecting member 23, and the second end of the rack 241 can be elastically connected to the mounting base 27 and can move relative to the mounting base 27. In this way, when the connecting member 23 moves relative to the housing 21, since the rack 241 is connected to the connecting member 23 and can move relative to the mounting base 27, the connecting member 23 can drive the rack 241 to move synchronously.

[0115] The first gear 242 is meshed with the rack 241 and rotates under the drive of the rack 241. The driving force of the first gear 242 is used to drive the backflow prevention assembly 22 to rotate. Since the first gear 242 is meshed with the rack 241, the first gear 242 can also rotate under the drive of the rack 241, thereby driving the backflow prevention assembly 22 to rotate relative to the housing 21. As a result, the backflow prevention assembly 22 rotates relative to the housing 21 to a closed state or an open state, thereby preventing wind backflow.

[0116] Specifically, the gear transmission assembly 24 may further include a second gear 243 and a first elastic connector 244. The second gear 243 meshes with the first gear 242. The two ends of the first elastic connector 244 are respectively disposed on the second gear 243 and the backflow prevention assembly 22, so as to drive the backflow prevention assembly 22 to rotate under the drive of the second gear 243. In this way, when the first gear 242 rotates under the drive of the rack 241, the second gear 243 also rotates synchronously in the opposite direction. Since the two ends of the first elastic connector 244 are respectively disposed on the second gear 243 and the backflow prevention assembly 22, the backflow prevention assembly 22 can rotate synchronously with the second gear 243 under the drive of the first elastic connector 244. At the same time, since the rotation of the anti-backflow component 22 is driven by the action of the first elastic connector 244, in the open state, the ability of the anti-backflow component 22 to withstand external force is only related to the first elastic connector 244. Therefore, the embodiment of the present application can achieve precise control of the minimum external force that the anti-backflow component 22 can withstand by setting the external force (i.e., torque) of the first elastic connector 244, which can help improve the stability of the wind backflow prevention effect to further meet the higher heat dissipation requirements of the communication equipment 100.

[0117] For example, the first elastic connector 244 may be a torsion spring that is threaded through the rotation axis of the second gear 243, with both ends of the torsion spring respectively abutting against the second gear 243 and the backflow prevention assembly 22. Thus, when the second gear 243 rotates, the backflow prevention assembly 22 can be driven to rotate relative to the housing 21 via the torsion spring.

[0118] The second gear 243 can be inserted through the end of the mounting member 221 via a fixed shaft 245. That is, the second gear 243 can be coaxially connected to the mounting member 221 via the fixed shaft 245. Under the action of the torsion spring, the backflow prevention assembly 22 and the second gear 243 can be driven to rotate synchronously. The two ends of the torsion spring can be connected to the second gear 243 and the mounting member 221 in the backflow prevention assembly 22, respectively, or can act on the second gear 243 and the mounting member 221 by abutting against them respectively. In this embodiment, the connection method of the first elastic connector 244 with the second gear 243 and the mounting member 221 is not further limited.

[0119] The fixed shaft 245 can be fixedly connected to the mounting base 27 by plugging or other means, so that the first gear 242 and the second gear 243 are mounted on the mounting base 27 through the fixed shaft 245. In this embodiment, the connection method between the fixed shaft 245 and the mounting base 27 is not further limited.

[0120] For example, the first gear 242 can be a full gear, and the second gear 243 can be a partial gear. A partial gear can be understood as an incomplete gear structure, i.e., a gear structure having only one section of meshing teeth. This arrangement of the transmission assembly not only achieves transmission, but also makes the communication board 20 more compact and reduces the manufacturing costs of the transmission assembly and the communication board 20.

[0121] Alternatively, the second gear 243 may also be a full gear. In this embodiment, the structure of the second gear 243 is not further limited, as long as the second gear 243 can mesh with the first gear 242 and drive the backflow prevention assembly 22 to rotate to the open state and reach the preset opening angle.

[0122] For example, the first end of the rack 241 can be engaged with the connector 23. This engagement not only allows the rack 241 to move synchronously with the connector 23 on the mounting base 27, but also simplifies the connection between the rack 241 and the connector 23. As a possible embodiment, the first end of the rack 241 can be provided with a hook 2411, and the end of the connector 23 connected to the rack 241 can be provided with a slot 231 that matches the hook 2411. The hook 2411 can be adapted to the slot 231 on the connector 23, thereby achieving quick engagement between the rack 241 and the connector 23. Alternatively, the first end of the rack 241 can be connected to the connector 23 in other detachable ways. In this embodiment, the connection method between the rack 241 and the connector 23 is not further limited.

[0123] Exemplarily, the connecting member 23 may be a rod-shaped connecting member, that is, the connecting member 23 may be understood as a connecting rod.

[0124] It should be noted that the connecting member 23 and the rack 241 may also be an integrated structure. In other words, the connecting member 23 and the rack 241 may also be an integrated structure.

[0125] The rack 241 can be slidably connected to the mounting base 27, which facilitates the movement of the rack 241 relative to the mounting base 27 driven by the connector 23. The second end of the rack 241 can be connected to the mounting base 27 via a tension spring 246. The tension spring 246 can drive the backflow prevention assembly 22 to rotate to a closed state when the communication board 20 is removed from the slot 11.

[0126] The limiting member 28 can be provided on the mounting base 27 and located on the moving path of the backflow prevention assembly 22 to limit the opening angle of the backflow prevention assembly 22. Thus, when the backflow prevention assembly 22 rotates relative to the housing 21 under the drive of the first elastic connector 244, the limiting member 28 can prevent the backflow prevention assembly 22 from further rotating, thereby achieving position limiting and precise control of the opening angle of the backflow prevention assembly 22.

[0127] Furthermore, a first elastic member 247 may be provided between the connector 23 and the housing 21. One end of the first elastic member 247 may abut against the connector 23, and the other end may abut against an inner wall of the housing 21, such as the assembly member 215. In this way, the first elastic member 247 can ensure that the initial position of the connector 23 when installed on the housing 21 is fixed, thereby facilitating the connection and installation of the connector 23 and the rack 241. For example, the first elastic member 247 may be a spring or other elastic member.

[0128] The following further describes the process of inserting and removing the communication board 20 into the slot 11 with reference to the accompanying drawings.

[0129] refer to Figures 7 to 9 As shown in , when the communication board 20 is inserted from left to right into the slot 11 of the chassis 10, during the insertion process, the connector 23 abuts against the blocking block 12 or another communication board 20 in the slot 11 of the communication board 20, preventing the communication board 20 from continuing to be inserted into the slot 11 along with the housing 21. At this time, since the connector 23 is movable relative to the housing 21, the connector 23 slides leftward relative to the housing 21, driving the rack 241 to move leftward, thereby driving the first gear 242 to rotate clockwise, the tension spring 246 to be stretched, and the first elastic member 247 to be compressed. Since the first gear 242 cooperates with the second gear 243, the first gear 242 can drive the second gear 243 to rotate counterclockwise. Since the second gear 243 is connected to the backflow prevention assembly 22 through the first elastic connecting member 244, when the second gear 243 rotates, the first elastic connecting member 244 acts to drive the backflow prevention assembly 22 to rotate together until it is blocked by the limit member 28 and reaches the preset opening angle. At this time, the backflow prevention plate 222 is in a position relative to the housing 21 as shown in FIG. Figure 9 The open state shown in .

[0130] When the backflow prevention plate 222 is subjected to an external force that causes it to rotate (such as the force of the adjacent communication board 20 in the chassis 10), and the external force is greater than the torsional force provided by the first elastic connector 244, the position of the communication board 20 can remain unchanged, and the backflow prevention plate 222 rotates around the fixed axis 245 until the external force is balanced with the torsional force of the first elastic connector 244 or the backflow prevention plate 222 rotates to the limit surface 214 of the top cover 212. When the external force disappears or is released, the backflow prevention plate 222 can return to its original position. Figure 9, during which the positions of the connecting member 23, the rack 241, the first gear 242 and the second gear 243 remain unchanged.

[0131] On the contrary, when the communication board 20 is pulled out from the slot 11 and the connector 23 is disengaged from the blocking block 12 or other communication boards 20, the rack 241 can be pulled to the right by the rebound force of the tension spring 246, driving the first gear 242 to rotate counterclockwise, thereby driving the second gear 243 to rotate clockwise. The backflow prevention component 22 rotates clockwise around the fixed axis 245 under the action of the first elastic connector 244 until it passes the limit surface 214, so that the backflow prevention plate 222 automatically reaches the position as shown in FIG. Figure 8 At this time, the communication board 20 continues to maintain this state without being affected by external forces.

[0132] The communication board in the embodiment of the present application drives the anti-backflow component to rotate to a closed state or an open state through a transmission component. In this way, while solving the problem of air backflow caused by the communication board being pulled out, on the one hand, it can make the communication board suitable for communication equipment with various plug-in and unplugging postures, and on the other hand, it can realize the automatic opening or closing of the anti-backflow component on the communication board, which helps to improve the plug-in and unplugging experience of the communication board.

[0133] Example 2

[0134] Figure 11 1 is a structural schematic diagram of the anti-backflow plate assembly in the communication single board provided in Example 2 of the present application in a closed state, 12 is a structural schematic diagram of the anti-backflow plate assembly in the communication single board provided in Example 2 of the present application in an open state, Figure 13 This is a structural diagram of some components within the communication board provided in Example 2 of the present application.

[0135] Based on the above embodiment 1, this embodiment provides another communication board 20. The difference from the embodiment 1 is that the transmission assembly in this embodiment is a connecting rod transmission assembly 25.

[0136] refer to Figures 11 to 13As shown, the connecting rod transmission assembly 25 may include a transmission member 251 and a connecting rod assembly. The connecting rod assembly may include a first connecting rod 252, with a first rotating shaft 255 disposed between the first and second ends of the first connecting rod 252. The first connecting rod 252 is rotatably connected to the housing 21 via the first rotating shaft 255, and the first connecting rod 252 may rotate about the first rotating shaft 255. The first end of the first connecting rod 252 may be used to receive the force applied by the transmission member 251, and the second end of the first connecting rod 252 is connected to the backflow prevention assembly 22. Driven by the transmission member 251, the first connecting rod 252 may drive the backflow prevention assembly 22 to rotate. In this way, when the first connecting rod 252 receives the force of the transmission member 251, the first connecting rod 252 can rotate around the first rotating shaft 255 on the shell 21. Since the second end of the first connecting rod 252 is connected to the anti-backflow component 22, the anti-backflow component 22 can be driven by the first connecting rod 252 to rotate, so that the anti-backflow component 22 rotates relative to the shell 21 to a closed state or an open state, thereby playing a role in preventing backflow.

[0137] The first connecting rod 252 is further provided with a connecting post 2212 on the mounting member 221 of the backflow prevention assembly 22. A retaining groove 2521 is provided at the second end of the first connecting rod 252. The connecting post 2212 can be inserted into the retaining groove 2521. The length of the retaining groove 2521 is greater than the diameter of the connecting post 2212, so that the retaining member 28 can move relative to the retaining groove 2521. For example, the retaining groove 2521 can be a strip-shaped groove that matches the connecting post 2212. This allows the first connecting rod 252 to be connected to the backflow prevention assembly 22.

[0138] As in the first embodiment, a first elastic member 247 is further provided between the connecting member 23 and the housing. A limiting member 28 may be provided on the mounting base 27 and located in the movement path of the mounting member 221. The limiting member 28 is used to limit and control the rotation angle of the backflow prevention assembly 22 by restricting the rotation angle (i.e., the opening angle) of the mounting member 221.

[0139] Specifically, the connecting rod assembly may include a second connecting rod 253 and a third connecting rod 254. The first end of the second connecting rod 253 is hinged to the first end of the first connecting rod 252, the second end of the second connecting rod 253 is hinged to the first end of the third connecting rod 254, the second end of the third connecting rod 254 is hinged to the housing 21, and the transmission member 251 is connected to the first end of the third connecting rod 254. In this way, when the third connecting rod 254 receives the force of the transmission member 251, the third connecting rod 254 can rotate relative to the housing 21, thereby driving the first connecting rod 252 to rotate on the housing 21 around the first rotation axis 255 through the second connecting rod 253, and then driving the backflow prevention assembly 22 to rotate through the first connecting rod 252.

[0140] The mounting member 221 in the backflow prevention assembly 22 is hingedly connected to the mounting base 27, so that the first connecting rod 252 can drive the backflow prevention plate 222 to rotate synchronously. The backflow prevention assembly 22 and the connecting member 23 can be described in the first embodiment. In this embodiment, the structures of the backflow prevention assembly 22 and the connecting member 23 are further described. For example, to facilitate the sliding movement of the connecting member 23 relative to the housing 21, the connecting member 23 can be provided with a sliding groove 233 that mates with the slider on the assembly member 215.

[0141] Accordingly, the connecting rod assembly is mounted on the mounting base 27 to secure the connecting rod assembly within the cavity. The transmission member 251 can be slidably connected to the mounting base 27, allowing the transmission member 251 to move synchronously with the connecting member 23 under the action of the connecting member 23. For example, the transmission member 251 can be engaged with the connecting member 23. For details, please refer to the embodiment of the engagement method of the rack 241 with the connecting member 23.

[0142] Furthermore, the connecting rod transmission assembly 25 may further include a second elastic member 256, which is connected between the connecting rod assembly and the transmission member 251. Specifically, the second elastic member 256 may be connected between the transmission member 251 and the first end of the third connecting rod 254. Thus, by disposing the second elastic member 256 between the connecting rod assembly and the transmission member 251, the transmission member 251 can drive the backflow prevention assembly 22 to rotate through the connecting rod assembly.

[0143] Furthermore, the mounting member 221 of the backflow prevention assembly 22 can be connected to the mounting base 27 via a third elastic member 257. Thus, the third elastic member 257 can further limit the opening angle of the backflow prevention assembly 22 and, on the other hand, can facilitate the backflow prevention assembly 22 to automatically return to the closed state (i.e., reset).

[0144] Illustratively, the second elastic member 256 and the third elastic member 257 may be springs or other elastic members.

[0145] The following further describes the process of inserting and removing the communication board 20 into the slot 11 with reference to the accompanying drawings.

[0146] refer to Figures 11 to 13As shown in , when the communication board 20 is inserted into the slot 11 of the chassis 10 from right to left, during the insertion process, the connecting member 23 abuts against the blocking block 12 or other communication boards 20 in the slot 11 of the communication board 20, and cannot continue to be inserted into the slot 11 along with the shell 21 of the communication board 20. At this time, since the connecting member 23 slides to the right relative to the shell 21, the transmission member 251 also slides to the right relative to the shell 21, and then drives the third connecting rod 254 to rotate counterclockwise through the second elastic member 256, and the second elastic member 256 is in a stretched state. Under the action of the third connecting rod 254, the second connecting rod 253 moves to the right, and then drives the first connecting rod 252 to rotate counterclockwise around the first rotating shaft 255 relative to the shell 21. Driven by the first connecting rod 252, the first connecting rod 252 moves relative to the connecting column 2212, and drives the anti-backflow assembly 22 to rotate clockwise relative to the shell 21 through the connecting column 2212, so that the anti-backflow assembly 22 is as shown relative to the shell 21. Figure 12 At this time, the second elastic member 256 and the third elastic member 257 are both in a stretched state. Under the action of an external force (such as an adjacent communication board 20), the position of the communication board 20 can remain unchanged, and the external force can drive the anti-backflow component 22 to rotate until the limiting surface 214 of the housing 21 is in the position shown in FIG. Figure 11 The closed state is shown in .

[0147] On the contrary, when the communication board 20 is pulled out from the slot 11 and the connector 23 is disengaged from the blocking block 12 or other communication boards 20, the connector 23 can slide to the left relative to the shell 21, thereby driving the transmission member 251 to slide to the left relative to the shell 21. Under the interaction between the second elastic member 256 and the shell 21, the third connecting rod 254 can be driven to rotate clockwise. At this time, the second connecting rod 253 also moves to the left relative to the shell 21, thereby forcing the first connecting rod 252 to rotate clockwise around the first rotating shaft 255. Under the action of the first connecting rod 252, the anti-backflow component 22 can rotate counterclockwise relative to the shell 21, so that the anti-backflow component 22 rotates until the limiting surface 214 of the shell 21 is in the position shown in FIG. Figure 11 At the same time, under the action of the third elastic member 257, the backflow prevention assembly 22 can be automatically restored to the closed state.

[0148] The communication board in the embodiment of the present application drives the anti-backflow assembly to rotate to a closed state or an open state through a connecting rod transmission assembly. This solves the problem of wind backflow caused by pulling out the communication board and makes the structure of the communication board more diversified.

[0149] Example 3

[0150] Figure 14 This is a structural diagram of the anti-backflow component in the communication board in the closed state provided in the third embodiment of the present application. Figure 15 This is a structural diagram of the anti-backflow component in the communication board provided in the third embodiment of the present application in an open state. Figure 16 This is a structural diagram of some components within the communication board provided in Example 3 of the present application.

[0151] Based on the above-mentioned embodiment 1, this embodiment provides another communication board 20. The difference from embodiment 1 is that the transmission assembly in this embodiment is a cam rocker assembly 26. In this embodiment, the movement of the connecting member 23 relative to the housing 21 is rotation.

[0152] refer to Figure 14 To the picture Figure 16 As shown, the transmission assembly can be a cam rocker assembly 26. The cam rocker assembly 26 can include a cam 262, a rocker 261, and a second elastic connector 263. The cam 262 can be located at the end of the rocker 261 and abut against the first end of the connector 23, driving the rocker 261 to rotate under the drive of the connector 23. Thus, when the connector 23 rotates relative to the housing 21, the rocker 261 can rotate synchronously with the connector 23 because the cam 262 is located at the end of the rocker 261 and abuts against the end of the connector 23. The second elastic connector 263 has two ends respectively disposed on the rocker 261 and the backflow prevention assembly 22, driving the backflow prevention assembly 22 to rotate under the drive of the rocker 261. Thus, when the rocker 261 rotates synchronously with the connector 23, the backflow prevention assembly 22 can rotate relative to the housing 21 to a closed state or an open state under the drive of the second elastic connector 263.

[0153] Exemplarily, the second elastic connecting member 263 may be a torsion spring. Similar to the first embodiment, the torsion spring may be disposed on the second rotating shaft 265. The second rotating shaft 265 may be disposed in the mounting member 221 and rotatably connected to the mounting base 27 via the second rotating shaft 265. The two ends of the torsion spring may be connected to the rocker arm 261 and the mounting plate, respectively. Alternatively, the two ends of the torsion spring may act on and abut against the rocker arm 261 and the mounting plate, respectively, so that the torsion spring drives the backflow prevention assembly 22 and the rocker arm 261 to rotate synchronously.

[0154] The connecting member 23 can be hinged to the mounting base 27 via a third rotating shaft 266, allowing the connecting member 23 to rotate about the third rotating shaft 266. The rocker arm 261 can be sandwiched between the mounting member 221 and the mounting base 27. While abutting the first end of the connecting member 23 via the cam 262, it can also be connected to the mounting base 27 via a third elastic connecting member 264. This facilitates the resetting of the rocker arm 261 via the third connecting member 23. For example, the third elastic connecting member 264 can be a torsion spring.

[0155] It should be understood that when an external force or obstacle acts on an inclined surface, the inclined surface may rotate under the action of the external force or obstacle. Based on this principle, the abutment portion 232 (i.e., the second end) of the connector 23 in this embodiment is an inclined surface, and the abutment portion 232 of the connector 23 can extend through the opening in the housing 21. During the insertion process, when the second end of the connector 23 abuts the blocking block 12 in the slot 11 of the communication board 20 or other communication board 20, the connector 23 can rotate relative to the housing 21 under the action of the blocking block 12 or other communication board 20, thereby driving the anti-backflow assembly 22 to rotate relative to the housing 21 to a closed state or an open state through the cam rocker assembly 26.

[0156] Among them, similar to the first embodiment, the limiter 28 can be provided on the mounting base 27 and located on the rotation path of the cam 262, so as to limit and control the rotation angle of the rocker arm 261 and the anti-backflow assembly 22 to improve the stability of the anti-backflow effect.

[0157] The following further describes the process of inserting and removing the communication board 20 into the slot 11 with reference to the accompanying drawings.

[0158] refer to Figures 14 to 16 As shown in , when the communication board 20 is inserted into the slot 11 of the chassis 10 from right to left, during the insertion process, the connector 23 abuts against the blocking block 12 or other communication boards 20 in the slot 11 of the communication board 20, and cannot continue to be inserted into the slot 11 along with the shell 21 of the communication board 20. At this time, since the connector 23 can rotate clockwise relative to the shell 21, the first end of the connector 23 is lifted relative to the shell 21 toward the side of the cam 262 (i.e., lifted upward). At this time, the cam 262 will slide accordingly at the first end of the connector 23, causing the rocker 261 to rotate clockwise, and the third elastic connector 264 will deform. Since the second elastic connector 263 acts on the rocker 261 and the mounting member 221 respectively, under the action of the second elastic member 256, the anti-backflow plate 222 and the mounting member 221 rotate clockwise with the connector 23 until the cam 262 is blocked by the limit member 28, thereby causing the anti-backflow assembly 22 to be as shown relative to the shell 21. Figure 15 Under the action of external force (such as the adjacent communication board 20), the position of the communication board 20 can remain unchanged, and the external force can drive the anti-backflow component 22 to rotate until the limiting surface 214 of the shell 21 is in the open state as shown in FIG. Figure 14 The closed state is shown in .

[0159] On the contrary, when the communication board 20 is pulled out of the slot 11 and the connector 23 is disengaged from the blocking block 12 or other communication boards 20, the connector 23 can rotate counterclockwise relative to the housing 21, so that the first end of the connector 23 rotates relative to the housing 21 toward the side away from the cam 262 (i.e., falls downward). At this time, the cam 262 will slide accordingly at the first end of the connector 23, causing the rocker 261 to rotate counterclockwise. Under the action of the second elastic member 256, the anti-backflow plate 222 and the mounting member 221 connector 23 rotate counterclockwise until the limit surface 214 of the housing 21 is in the position shown in FIG. Figure 14 During this process, under the action of the rebound force of the third elastic connecting member 264, the swing rod 261 is prompted to rotate counterclockwise, thereby accelerating the closing process of the backflow prevention assembly 22.

[0160] The communication board in the embodiment of the present application drives the anti-backflow assembly to rotate to a closed state or an open state through the cam rocker assembly. This solves the problem of wind backflow caused by the communication board being pulled out and makes the structure of the communication board more diversified.

Claims

1. A communication board, characterized in that: The communication board is pluggable and disposed in a slot of the communication device. The communication board includes a housing, a connector, a transmission assembly, and a backflow prevention assembly. The housing has a hollow cavity, and a portion of the connector is disposed in the cavity and is movable relative to the housing. The transmission assembly is disposed in the cavity and is connected to the connector. The backflow prevention assembly is arranged on the outer side of the side wall of the housing and is connected to the transmission assembly. The backflow prevention assembly can be driven by the transmission assembly to rotate relative to the housing. The transmission assembly is used to drive the backflow prevention assembly to rotate to a closed state or an open state during the insertion and removal of the communication board in the slot. When the backflow prevention assembly is in the open state, it closes the slot adjacent to the communication board. The connector has an abutment portion, the housing is provided with an opening for the connector to extend, and the abutment portion extends out of the opening; during the insertion and removal of the communication board in the slot, the abutment portion abuts against the communication device or other communication board, and drives the connector to move relative to the housing; It also includes a mounting base, and the transmission assembly is arranged in the cavity through the mounting base; The moving direction of the connecting member relative to the housing is the same as the extending direction of the slot; The transmission assembly is a gear transmission assembly, comprising a rack and a first gear, wherein a first end of the rack is connected to the connecting member, and a second end of the rack is elastically connected to the mounting base and is movable relative to the mounting base; The first gear is engaged with the rack to rotate under the drive of the rack, and the driving force of the first gear is used to drive the backflow prevention assembly to rotate; The gear transmission assembly further includes a second gear and a first elastic connector, the second gear is meshed with the first gear, and both ends of the first elastic connector are respectively arranged on the second gear and the anti-backflow assembly to drive the anti-backflow assembly to rotate under the drive of the second gear, or The transmission assembly is a connecting rod transmission assembly, which includes a transmission member and a connecting rod group. The connecting rod group includes a first connecting rod, a first rotating shaft is provided between the first end and the second end of the first connecting rod, the first connecting rod is rotatably connected to the housing through the first rotating shaft, the first end of the first connecting rod is used to receive the force of the transmission member, the second end of the first connecting rod is connected to the anti-backflow assembly, and the first connecting rod can drive the anti-backflow assembly to rotate under the drive of the transmission member; The connecting rod group includes a second connecting rod and a third connecting rod, the first end of the second connecting rod is hinged to the first end of the first connecting rod, the second end of the second connecting rod is hinged to the first end of the third connecting rod, the second end of the third connecting rod is hinged to the housing, and the transmission member is connected to the first end of the third connecting rod, or The movement of the connecting member relative to the housing is rotation; The transmission assembly is a cam rocker assembly, which includes a cam, a rocker, and a second elastic connecting member. The cam is provided at the end of the rocker and abuts against the first end of the connecting member, and is used to drive the rocker to rotate under the drive of the connecting member. Two ends of the second elastic connecting member are respectively arranged on the swing rod and the anti-backflow assembly, so as to drive the anti-backflow assembly to rotate under the drive of the swing rod.

2. The communication board according to claim 1, wherein: The backflow prevention assembly includes a backflow prevention plate, which is connected to the transmission assembly and is configured to be driven by the transmission assembly to rotate relative to the housing to be in the closed state or the open state.

3. The communication board according to claim 2, characterized in that: In the closed state, the backflow prevention plate is parallel to the top wall of the housing and is in contact with the top wall. In the open state, the backflow prevention plate is opened at a preset angle relative to the top wall.

4. The communication board according to claim 2, characterized in that: The backflow prevention assembly further comprises a mounting member, the backflow prevention plate is arranged on the mounting member and is connected to the transmission assembly via the mounting member, and the mounting member can rotate synchronously with the backflow prevention plate under the drive of the transmission assembly.

5. The communication board according to claim 1, characterized in that: When the communication board moves relative to the slot, the backflow prevention assembly is in the closed state relative to the housing.

6. The communication board according to claim 1, characterized in that: A limiting member is provided in the cavity, and the limiting member is used to limit the opening angle of the backflow prevention component.

7. The communication board according to claim 1, characterized in that: The first elastic connecting member is a torsion spring, which is passed through the rotating shaft of the second gear, and two ends of the torsion spring are respectively in contact with the second gear and the backflow prevention component.

8. The communication board according to claim 1, wherein: The first gear is a full gear, and the second gear is an incomplete gear.

9. The communication board according to claim 1, characterized in that: The first end of the rack is clamped with the connecting member, and the second end of the rack is connected to the mounting base through a tension spring; the rack is slidably connected to the mounting base.

10. The communication board according to claim 6, characterized in that: The limiting member is provided on the mounting base and is located on the moving path of the backflow prevention assembly, and is used to limit the opening angle of the backflow prevention assembly.

11. The communication board according to claim 1, characterized in that: A first elastic member is further provided between the connecting member and the shell. One end of the first elastic member abuts against the connecting member, and the other end abuts against the inner wall of the shell.

12. The communication board according to claim 1, characterized in that: The connecting rod transmission assembly further includes a second elastic member connected between the connecting rod group and the transmission member.

13. A communication device, characterized in that: It comprises a chassis and a plurality of communication boards as described in any one of claims 1 to 12 above, wherein the chassis is provided with a plurality of slots, the communication boards are pluggable and arranged in the slots, and the communication boards can be used to close the slots adjacent to the communication boards in the communication device.

14. The communication device according to claim 13, wherein: When the communication board is pulled out of the slot, the communication board is in a closed state, and the communication board adjacent to the communication board in the communication device can return to an open state from the closed state.

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