Communication board, plug-in module and communication device

Abstract

Embodiments of the present application relate to the technical field of optical communications, and provide a communication board, a plug-in module and a communication device. The communication board comprises a handle strip and optical cages; a first heat dissipation hole is formed in the outer side of each port of the handle strip; each optical cage is provided with a plug-in hole correspondingly communicated with the port; the communication board is connected to plug-in modules; a plug-in end of each plug-in module can pass through the port to be matched with the corresponding plug-in hole in a pluggable mode, and when the plug-in ends are plugged in the plug-in holes, the first heat dissipation holes are opposite to first heat dissipation structures arranged on the side walls of the plug-in modules. When entering from the first heat dissipation holes a communication device body in which the communication board is inserted, cold air in the environment first comes into contact with the first heat dissipation structures, so that the shell temperature of the side walls of the plug-in modules is effectively reduced, the heat dissipation effect on the plug-in modules is improved, the heat dissipation requirements under the high-density design of the plug-in modules on the communication board are met, the impact on the packaging form, the size and the like of devices deployed in the current network is small, and the deployment of devices in the current network is prevented from being changed.

Description

Communication boards, plug-in modules and communication equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 27, 2023, with application number 202323233444.3 and application name “Communication board, plug-in module and communication equipment”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of optical communication technology, and in particular to a communication board, a plug-in module and a communication device. Background Art

[0003] With the increasing demand for bandwidth, fiber-based access technology has become the main implementation technology for access networks. Among them, passive optical network (PON) has been widely deployed as an optical access system and has become a standard specification of the International Telecommunication Union.

[0004] A PON system typically includes an optical line terminal (OLT) at the central office, multiple optical network units (ONUs) at the user end, and an optical distribution network (ODN) located between the two. The optical line terminal (OLT) is a core component of a fiber-based optical access network and a multi-service provisioning platform. OLT communication equipment typically includes an OLT connection device and an OLT optical module. For example, the OLT connection device may include a communication board with multiple ports. The communication board also includes multiple optical cages, which are connected to the corresponding ports. The OLT optical module can be plugged into the optical cage through the port, and the optical module and the optical cage are electrically connected to realize signal connection between the OLT optical module and the OLT connection device. As the number of access users grows, the demand for the number of ports on communication boards also increases. PON systems have widely implemented a high-density design with 16 ports on a single communication board to accommodate 16 optical modules, and are evolving towards a single communication board with 32 ports. However, with the emergence of higher-density design scenarios, higher requirements are placed on the heat dissipation of the optical modules plugged into the communication boards. The current heat dissipation effect of optical modules is difficult to meet the requirements.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a communication board, a plug-in module and a communication device. The connection between the communication board and the plug-in module can achieve an excellent heat dissipation effect for the plug-in module, meeting the high heat dissipation performance requirements of the plug-in module under high-density designs such as multi-ports of the communication board and multi-channels of the plug-in module.

[0007] A first aspect of an embodiment of the present application provides a communication board for connecting to a plug-in module. The communication board includes a handle bar having multiple ports and a first heat dissipation hole. The multiple ports are distributed along a first direction. The ports are used to allow the plug-in end of the plug-in module to pass through. The outside of each port has a first heat dissipation hole.

[0008] The communication board also includes a plurality of optical cages, each optical cage having a plug interface, the plug interface correspondingly communicating with the port, and the plug interface is used for pluggable cooperation with the plug end passing through the port.

[0009] When the plug interface is plugged into the plug-in terminal, the first heat dissipation hole faces a first heat dissipation structure located on a sidewall of the plug-in module extending in the plug-in / plug-out direction and located on one side of the plug-in terminal in the plug-in / plug-out direction. The communication board can be inserted into the body of the communication device. As cool air from the environment enters the communication device through the first heat dissipation hole, it first contacts the first heat dissipation structure, effectively reducing the temperature of the plug-in module shell and improving the heat dissipation effect on the plug-in module. Furthermore, combined with the fan speed control strategy within the communication device, the plug-in module shell temperature can be more effectively controlled to meet long-term application requirements and facilitate the high-density layout of the plug-in modules on the communication board.

[0010] In a possible implementation, the optical cage has a first cavity in communication with the plug interface. The first cavity includes a bottom wall and a top wall opposite to each other in a second direction. The second direction is perpendicular to the plugging and unplugging direction and the first direction.

[0011] The light cage further includes a heat-conducting elastic member and a first heat-conducting structure. The heat-conducting elastic member is located on the inner surface of the bottom wall, and the first heat-conducting structure is located on the outer surface of the bottom wall. The heat-conducting elastic member and the first heat-conducting structure are positioned opposite to each other.

[0012] The plug-in terminal includes a first side surface and a second side surface that are opposite to each other in the second direction. When the plug-in port is plugged into the plug-in terminal, the first cavity accommodates the plug-in terminal, and the thermally conductive elastic member abuts against the first side surface. This allows heat generated by the plug-in module during operation to be dissipated to the exterior of the light cage via the thermally conductive elastic member, the bottom wall, and the first thermally conductive structure on the outer surface of the bottom wall, achieving better heat dissipation.

[0013] In one possible implementation, the communication board further includes a second heat dissipation structure and a second heat conductive structure, the second heat conductive structure is fixed on the second heat dissipation structure, and the second heat conductive structure is in abutment contact with the first heat conductive structure to form a heat dissipation channel from the plug-in module and the optical cage to the second heat dissipation structure.

[0014] Heat from the plug-in module is transferred to the plug-in terminal and then, via the thermally conductive elastic member, the first heat-conducting structure, and the second heat-conducting structure, to the second heat dissipation structure, transferring heat from the plug-in module and the optical cage to the outside. The second heat dissipation structure can be a heat sink with a relatively large area and better heat dissipation performance, effectively improving the heat dissipation performance of the plug-in module and communication board.

[0015] In a possible implementation, the handle bar includes a panel and a second cavity. The panel is located on one side of the second cavity. A through hole communicating with the second cavity is opened on the panel, and the through hole is used for the plug-in module to pass through.

[0016] The second cavity includes a rear sidewall opposite the panel. The optical cage is located on the side of the rear sidewall facing away from the panel. The rear sidewall is provided with a port, a first heat dissipation hole, and a second heat dissipation hole. When the plug-in port is plugged into the plug-in terminal, the second cavity accommodates a portion of the plug-in module. This allows the plug-in module to retract into the second cavity of the handle bar, increasing the portion of the plug-in module located inside the panel or within the housing cavity. The plug-in module occupies more space within the communication device body, reducing the space occupied by the plug-in module between the panel and the cabinet door of the communication device body. This avoids interference between the plug-in module and the optical fiber attached to the plug-in module and the cabinet door, allowing the existing cabinet body and cabinet door to be reused without requiring external upgrades by the customer. This also facilitates a high-density layout of the plug-in modules on the panel.

[0017] In a possible implementation, the communication board further includes a third heat dissipation structure, which is disposed on the outer surface of the top wall. The third heat dissipation structure can further improve the heat dissipation effect on the plug-in module.

[0018] In one possible implementation, a through groove is provided on the top wall, and a heat-conducting boss is provided on the surface of the third heat dissipation structure facing the top wall. The heat-conducting boss is passed through the through groove, and when the plug interface is plugged into the plug end, the heat-conducting boss and the second side surface of the plug end are in abutment with each other to form a heat dissipation channel. The heat of the plug-in module can be transferred to the third heat dissipation structure through the second side surface and the heat-conducting boss, further enhancing the heat dissipation effect of the plug-in module.

[0019] In one possible implementation, the handle strip also has a second heat dissipation hole, the first heat dissipation hole is located on one side of the port along the first direction, and the second heat dissipation hole is located on one side of the port along the second direction. The second heat dissipation hole is opposite to the third heat dissipation structure, which increases the air intake and helps to further improve the heat dissipation effect of the plug-in module.

[0020] In one possible implementation, the communication board further includes a connecting abutment and a snap-fit ​​member. The snap-fit ​​members are located on either side of the abutment member. The abutment member abuts the side of the third heat dissipation structure facing away from the optical cage, and the snap-fit ​​member engages with the optical cage. Using the abutment and snap-fit ​​members to secure the third heat dissipation structure to the optical cage through snap-fitting provides a simple structure and facilitates production and assembly.

[0021] In one possible implementation, the opening ratio of the first heat dissipation hole is less than or equal to 30%, and the opening ratio of the second heat dissipation hole is less than or equal to 42%. The first heat dissipation hole and the second heat dissipation hole have a larger opening ratio, which is conducive to achieving excellent heat dissipation effect for the plug-in module.

[0022] In one possible implementation, the center line of the plug-in interface is inclined relative to the first direction so that the plug-in and unplugging directions of the plug-in interface and the plug-in module have an inclined angle with the first direction, and the inclined angle is less than 90°, which can achieve the reuse of the current body and cabinet door, and can make good use of the communication equipment body deployed in the existing network, and achieve capacity expansion without deploying new communication equipment bodies.

[0023] In a possible implementation, the number of ports is 16, which can achieve a higher-density port design while having excellent heat dissipation performance.

[0024] A second aspect of an embodiment of the present application provides a plug-in module for connecting to a communication board, wherein the communication board includes a handle bar and an optical cage. The plug-in module includes a plug-in end, which is used to pass through the port on the handle bar and be pluggable with the plug-in interface of the optical cage.

[0025] The plug-in module also includes a sidewall extending in the plug-in and unplugging direction, with a first heat dissipation structure disposed on the sidewall. The first heat dissipation structure is located on one side of the plug-in end along the plug-in and unplugging direction. When the plug-in end is plugged into the plug interface, the first heat dissipation structure is opposed to a first heat dissipation hole disposed on the handle bar and located outside the port. By aligning the first heat dissipation structure of the plug-in module with the first heat dissipation hole on the communication board, cold air in the environment first contacts the first heat dissipation structure of the plug-in module before passing through the communication board and entering the communication device body. This significantly improves the heat dissipation effect of the plug-in module and facilitates achieving a high heat dissipation effect in scenarios where the plug-in modules are densely arranged on the communication board.

[0026] In a possible implementation, the plug-in module further has an interface end, and the interface end and the plug-in end are respectively located at two ends of the plug-in module along the plug-in and pull-out direction.

[0027] The interface end has two ports for connecting to transmission cables. The two ports are arranged along a first direction, which aligns with the port distribution direction on the handle bar. This dual-port design enables a higher optical port density within a single communication board, enabling a higher port density within a limited space, improving space utilization and transmission performance.

[0028] In one possible implementation, the interface includes an SC interface, which maintains the optical fiber form and connection method deployed in the existing network unchanged, thereby reducing changes and complications to the existing network deployment.

[0029] In one possible implementation, the connectors include SFP+ or SFP connectors, and the module types include GPON or XG(S)-PON & GPON coexistence modules. The corresponding handlebar ports can be designed with a high-density 16-port design, facilitating high-density expansion and evolution of existing network transmission. Furthermore, the module's miniaturization ensures high applicability, meeting the needs of existing networks. Deployment can utilize existing equipment space, minimizing or eliminating changes to the packaging of existing network equipment.

[0030] A third aspect of the embodiments of the present application provides a communication device comprising a housing and any of the aforementioned communication boards, the housing having a slot into which the communication board is inserted. By including the communication board, the communication board can achieve excellent heat dissipation for plug-in modules plugged therein, meeting the heat dissipation requirements of high-density designs such as those requiring multiple ports on the communication board and multiple channels on the plug-in modules, thereby achieving a high-density design and high heat dissipation performance for the communication device. Furthermore, minimal changes are made to existing network deployed equipment, facilitating evolutionary implementation.

[0031] In a possible implementation, the communication device further includes any one of the above-mentioned plug-in modules, and the plug-in module is pluggably connected to the communication board. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic diagram of a PON passive optical network system provided in an embodiment of the present application;

[0033] FIG2 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0034] FIG3 is a schematic diagram of a scenario in which a communication board and a plug-in module cooperate in the related art;

[0035] FIG4 is a schematic diagram of another scenario of cooperation between a communication board and a plug-in module in the related art;

[0036] FIG5 is a schematic structural diagram of an assembly of a communication board and a plug-in module provided in an embodiment of the present application;

[0037] FIG6 is a schematic diagram of a disassembled structure of a communication board and a plug-in module provided in an embodiment of the present application;

[0038] FIG7 is a schematic diagram of the assembly of a handle bar, an optical cage, and a plug-in module of a communication board provided in an embodiment of the present application;

[0039] FIG8 is a front view structural diagram of a handle bar of a communication board provided in an embodiment of the present application;

[0040] FIG9 is a schematic structural diagram of a plug-in module provided in an embodiment of the present application;

[0041] FIG10 is a schematic side view of a plug-in module according to an embodiment of the present application;

[0042] FIG11 is a schematic top view of a plug-in module according to an embodiment of the present application;

[0043] FIG12 is a schematic diagram of the rear structure of a plug-in module provided in an embodiment of the present application;

[0044] FIG13 is a schematic structural diagram of a handle bar of a communication board provided in an embodiment of the present application;

[0045] FIG14 is a schematic top view of a handle bar, circuit board, and light cage of a communication board provided in an embodiment of the present application;

[0046] FIG15 is a schematic diagram of the assembly of a handle bar and a light cage in a communication board provided in an embodiment of the present application;

[0047] FIG16 is a schematic structural diagram of another communication board and plug-in module assembly provided in an embodiment of the present application;

[0048] FIG17 is a schematic diagram of the disassembled structure of another communication board and plug-in module provided in an embodiment of the present application;

[0049] FIG18 is a schematic diagram of a disassembled cross-sectional structure of a second heat dissipation structure, an optical cage, and a third heat dissipation structure in another communication board provided in an embodiment of the present application;

[0050] FIG19 is a schematic diagram of the assembled cross-sectional structure of the second heat dissipation structure, optical cage, third heat dissipation structure, and plug-in module of another communication board provided in an embodiment of the present application;

[0051] FIG20 is a schematic diagram of a disassembled optical cage and a third heat dissipation structure provided in an embodiment of the present application.

[0052] Explanation of Reference Numerals: 1000 - communication device; 100 - communication board; 10 - handle bar; 11 - panel; 12 - rear side wall; 121 - port; 122 - first heat dissipation hole; 123 - second heat dissipation hole; 13 - wrench; 14 - second cavity; 15 - left side wall; 16 - right side wall; 17 - display light; 20 - light cage; 211 - bottom wall; 212 - top wall; 213 - through slot; 22 - plug-in port; 23 - first cavity; 24 - thermally conductive elastic member; 25 - first heat-conducting structure; 50 - second heat-conducting structure; 60 - second heat-conducting structure; 70 - third heat-conducting structure; 71 - thermally conductive boss; 72 - abutting groove; 80 - snap structure; 81 - abutting member; 82 - snap member; 90 - circuit board; 200 - first heat dissipation structure; 201 - heat dissipation teeth; 300 - plug-in module; 30a - plug-in end; 30b - interface end; 301 - first side surface; 302 - second side surface; 31a, 31b, 31c, 31d - side walls; 32 - interface; 33 - unlocking device; 400 - body; 401 - slot. DETAILED DESCRIPTION

[0053] 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.

[0054] Fiber-optic access network transmission facilities are categorized as active optical networks (AONs) and passive optical networks (PONs), depending on whether they utilize active components. A passive optical network (PON) refers to an optical distribution network that lacks any electronic components or power supplies. Examples of PONs include broadband passive optical networks (BPONs), Ethernet passive optical networks (EPONs), and gigabit-capable PONs (GPONs).

[0055] Taking GPON network as an example, GPON technology is the latest generation of broadband passive optical integrated access standard based on ITU-T G.984.x standard. It has many advantages such as high bandwidth, high efficiency, large coverage, and rich user interfaces, and has been widely researched and applied.

[0056] Among them, according to different transmission rates, PON can include gigabit-capable passive optical networks (GPON), 10 gigabit-capable passive optical networks (XGPON), symmetric 10 gigabit passive optical networks (XGS-PON), etc.

[0057] FIG1 is a schematic diagram of a PON passive optical network system provided in an embodiment of the present application.

[0058] As shown in Figure 1, the types of services supported by the PON network system may include public switched telephone network (PSTN), data services (internet), community antenna television (CATV, also known as broadcasting and cable television system or broadcasting and cable television network), etc.

[0059] The PON system mainly includes four functional modules: optical line terminal 101 (OLT), optical distribution network 102 (ODN), optical network unit 104 (ONU) and system management module (not shown in the figure).

[0060] The optical line terminal 101 communicates with the optical network unit 104 via one or more optical distribution networks 102. The OLT and ONU can be considered master-slave communication devices. The OLT manages information, instructions, and monitoring information from the ONU. The OLT is typically installed in a central control station, such as a base station or service node room.

[0061] Optical Network Units (ONUs) 104 are located on the user side, specifically between the optical distribution network (ODN) 102 and user 105. The ONU's network side can have an optical interface, while the user side can have an electrical interface. For example, the ONU can be an optical modem on the user side. As shown in Figure 1, an optical line terminal (OLT) 101 can interface with multiple ONUs 104.

[0062] Optical distribution network 102 is a transmission facility within a fiber-optic access network. It provides optical transmission channels for the ONUs and OLTs, serving as the physical connection between them. Optical distribution network 102 may include optical fibers, fiber optic cable junction boxes, optical connectors (pigtails), passive optical splitters (such as passive splitter 103 in Figure 1), fiber optic connectors, and other passive optical components.

[0063] The system management function module is responsible for the maintenance and management of the optical fiber access network, including configuration management, performance management, fault management, security management and billing management.

[0064] FIG2 is a schematic structural diagram of a communication device provided in an embodiment of the present application.

[0065] Among them, in the PON system, the OLT communication equipment is an important local-end equipment and an optoelectronic integrated equipment. As shown in Figure 2, taking the OLT communication equipment as an example, the communication equipment 1000 may include a body 400, which serves as the main load-bearing structural component of the communication equipment 1000. The body 400 may be a frame structure, and the body 400 may have a accommodating cavity inside, which may be used to accommodate various structural components of the communication equipment 1000.

[0066] The body 400 may have a plurality of slots 401 , which may communicate with the receiving cavity of the body 400 . Insertion ports of the slots 401 may be located on the front of the body 400 . The communication device 1000 may further include a communication board 100 , which may implement functions such as accessing communication signals, data processing, and control management. The communication board 100 may be inserted into the slots 401 , thereby being fixed to the body 400 .

[0067] Among them, the communication board 100 may include a handle bar 10 and a circuit board (not shown in the figure). The circuit board can be fixed to the handle bar 10. For example, the handle bar 10 is located at one side of the circuit board. The handle bar 10 can facilitate the fixation and plugging of the circuit board on the body 400, thereby realizing the plugging and fixing of the entire communication board 100.

[0068] The handle bar 10 may have a plurality of ports 121 . When the communication board 100 is inserted and fixed in the slot 401 , the circuit board may be located in the accommodation cavity in the body 400 , and the ports 121 may face the front of the body 400 .

[0069] The communication device 1000 may further include a cabinet door (not shown in the figure), which may be provided on the front of the body 400 to isolate and protect the communication board 100 and the like inside the body 400 .

[0070] The communication board 100 may further include electronic components such as a chip unit, a circuit module, and a power supply (not shown in the figure). Such electronic components may be arranged on a circuit board.

[0071] The communication board 100 may also include an optical cage (not shown), which can be fixed to the circuit board and electrically connected to corresponding electronic components on the circuit board. The optical cage may have a plug interface that can be connected to the port 121 on the handle bar 10. The communication device 1000 can be connected to a transmission cable such as an optical fiber through the optical cage to achieve signal transmission.

[0072] For example, the optical cage can be connected to a plug-in module 300, which can be an optical module. The plug-in module 300 can be used to implement photoelectric conversion, converting optical signals into electrical signals, or vice versa. The plug-in module 300 can have a plug-in end, which can pass through the port 121 on the handle bar 10 and plug into and out of the optical cage's plug-in interface, thereby securing the plug-in module 300 to the optical cage on the communication board 100 and achieving an electrical connection between the plug-in module and the optical cage.

[0073] The plug-in module 300 may also have an interface port that can be connected to a transmission cable such as an optical fiber to achieve optical signal transmission. One interface port can connect to a certain number of ONUs, so the number of users a single communication board can support is limited. If the OLT's communication equipment is required to support more users, the plug-in module can have a doubled number of channels (interface ports) compared to conventional single-channel modules, supporting more user access.

[0074] The communication device 1000 may also include a fan (not shown in the figure), which can be fixed in the accommodating cavity of the body 400. An air inlet and an air outlet may also be opened on the body 400. The fan can accelerate the air flow inside the body 400, so that the cold air outside the body 400 can enter the body 400 through the air inlet, and exchange heat with the optical cage and electronic components of the communication board 100 in the body 400. The hot air after the heat exchange is discharged from the body 400 through the air outlet, thereby achieving heat dissipation of the communication equipment.

[0075] With the increasing maturity of the 10G-PON standard and industry, 10G-PON gigabit broadband networks have seen significant advancements in bandwidth, user experience, and connection capacity. GPON, as the previous generation mainstream standard, accounts for the majority of existing networks, and these networks will gradually be upgraded to 10G-PON as business demands demand. Furthermore, XG / XGS PON coexistence modules have begun to be widely deployed in central office equipment.

[0076] Conventional packaging forms of optical modules include 10-Gb small form-factor pluggable transceiver (XFP), small form-factor pluggable module (SFP), small form-factor pluggable module (SFP+). Among them, in 10G-EPON mode, optical modules mainly adopt XFP packaging, in GPON mode, optical modules mainly adopt SFP packaging, and in XG / XGS coexistence mode, optical modules mainly adopt SFP+ packaging.

[0077] FIG3 is a schematic diagram of a cooperation scenario of a communication board and a plug-in module in the related art, and FIG4 is a schematic diagram of another cooperation scenario of a communication board and a plug-in module in the related art.

[0078] XFP-packaged plug-in modules are larger in size. As shown in Figure 3 , a communication board can have eight ports, meaning it can accept eight plug-in modules 300a, corresponding to eight optical interfaces. SFP or SFP+ modules are relatively smaller in size. As shown in Figure 4 , a communication board can have 16 ports, meaning it can accept 16 plug-in modules 300b, corresponding to 16 optical interfaces.

[0079] As the number of connected users grows, the number of communication equipment ports on the OLT central office also increases, leading to a growing demand for high-density design and capacity expansion. Simultaneously, to meet existing network requirements such as space conservation, reusing existing street cabinets, and accelerating copper-to-fiber conversion, the higher-density 32-port flexible passive optical network (FLEX PON) boards have emerged. However, the emergence of high-density designs such as multi-port boards and multi-channel plug-in modules has placed higher demands on the heat dissipation performance of the OLT communication equipment in the PON system, especially the heat dissipation of the plug-in modules. Optimizing heat dissipation for the system, plug-in modules, and the entire communication equipment has become a key challenge in achieving high-density performance.

[0080] It is understandable that in order to reduce costs, whether it is to achieve a high-density design with multiple ports on a communication board and multiple channels on a plug-in module, or to optimize the heat dissipation of the communication board, communication equipment and plug-in modules, it is hoped that the deployment configuration of the existing network will not be changed as much as possible, such as maintaining the body of the communication equipment in the existing network, the packaging scale size of the communication board port, the packaging form size of the plug-in module, as well as the form and connection method of transmission cables such as optical fibers.

[0081] Based on this, an embodiment of the present application provides a communication board and a plug-in module, in which a first heat dissipation hole is arranged on the outside of the port of the communication board handle strip, and when the plug-in interface of the optical cage is plugged into the plug-in end of the plug-in module, the first heat dissipation hole can be opposite to the first heat dissipation structure arranged on the side wall of the plug-in module, thereby improving the heat dissipation effect of the plug-in module, effectively reducing the shell temperature of the plug-in module, and meeting the high heat dissipation requirements under high-density designs such as multiple ports of the communication board and multiple channels of the plug-in module.

[0082] FIG5 is a schematic structural diagram of an assembly of a communication board and a plug-in module according to an embodiment of the present application, and FIG6 is a schematic structural diagram of a disassembled communication board and a plug-in module according to an embodiment of the present application.

[0083] As shown in Figure 5, the communication board 100 includes a handle bar 10 and a circuit board 90. The circuit board 90 can be fixed to the handle bar 10. The handle bar 10 can include a panel 11 and a wrench 13. The panel 11 can be located on one side of the circuit board 90, and the wrench 13 can be located on the panel 11. For example, the wrench 13 can be provided on both sides of the panel 11. The wrench 13 can facilitate operations such as plugging and unplugging the communication board 100.

[0084] The communication board 100 also includes an optical cage 20, which is used to be pluggable with a plug-in module. For example, as shown in Figure 6, an embodiment of the present application further provides a plug-in module 300. One end of the plug-in module 300 can be a plug-in end 30a. One end of the optical cage 20 can have a plug interface 22. The plug interface 22 can be pluggable with the plug-in end 30a, so that the plug-in end 30a of the plug-in module 300 can be connected to the plug interface 22 of the optical cage 20 in a pluggable manner.

[0085] The plug-in end 30a may have an electrical terminal (not shown in the figure), and the plug-in port 22 may also be provided with an electrical terminal (not shown in the figure). When the plug-in end 30a of the plug-in module 300 is plugged into the plug-in port 22 of the optical cage 20, the electrical terminal on the plug-in end 30a can be electrically connected to the electrical terminal in the plug-in port 22, thereby achieving an electrical connection between the plug-in module 300 and the optical cage 20.

[0086] FIG7 is a schematic diagram of the assembly of a handle bar, an optical cage, and a plug-in module of a communication board provided in an embodiment of the present application.

[0087] Among them, it can be understood that the light cage 20 and the plug-in module 300 are respectively located on both sides of the handle bar 10, and the light cage 20 is located on the side of the handle bar 10 facing the circuit board so that the light cage 20 is connected to the circuit board. The plug-in module 300 can be located on the side of the handle bar 10 facing away from the circuit board (that is, facing away from the accommodating cavity of the body 400) to facilitate the plugging and unplugging of the plug-in module 300 relative to the light cage 20.

[0088] As shown in FIG7 , the handle bar 10 may have multiple ports 121 through which the plug-in end 30a of the plug-in module 300 may pass. The plug-in ports 22 of the light cage 20 may be connected to the corresponding ports 121, and the plug-in ports 22 and the plug-in end 30a passing through the ports 121 may be pluggable. In other words, the plug-in end 30a of the plug-in module 300 may pass through the ports 121 and be pluggable and mated with the plug-in port of the light cage 20, allowing the plug-in module 300 to be inserted and fixed to the handle bar 10 and the light cage 20, and the plug-in module 300 may also be removed from the light cage 20 and the handle bar 10.

[0089] The direction of relative displacement between the optical cage 20 and the plug-in module 300 during insertion and removal is defined as the insertion and removal direction, as shown in the x-direction in Figures 6 and 7 . The plug-in module 300 may have a plug-in end 30a and an interface end 30b, which may be located at opposite ends of the plug-in module 300 along the insertion and removal direction. The plug-in end 30a is configured to pluggably engage with the plug-in interface 22 of the optical cage 20, while the interface end 30b is configured to connect to a transmission cable, such as an optical fiber. The optical cage 20 is electrically connected to the circuit board, thereby enabling a connection between the communication device and the external transmission cable through the optical cage 20 and the plug-in module 300, thus enabling signal transmission.

[0090] FIG8 is a front view structural diagram of a handle bar of a communication board provided in an embodiment of the present application.

[0091] The multiple ports 121 on the handle bar 10 can be distributed along the first direction. As shown in Figures 7 and 8, in the embodiment of the present application, the panel 11 can be a rectangular plate-like structure, and the long side direction of the panel 11 can be consistent with the first direction, such as the y direction in Figures 7 and 8. The short side direction of the panel 11 can be a second direction, and the second direction can be perpendicular to the plugging and unplugging direction and the first direction, such as the z direction in Figures 7 and 8.

[0092] As shown in Figure 8, the handle bar 10 also has a first heat dissipation hole 122. It can be understood that the first heat dissipation hole 122 is a through hole on the handle bar 10, which connects the external environment on the outside of the handle bar 10 (the side facing away from the circuit board) and the accommodating cavity on the inside of the handle bar 10 (the side facing the circuit board). The first heat dissipation hole 122 can serve as an air inlet for communication equipment.

[0093] The first heat dissipation holes 122 are located outside the port 121. Each port 121 may have multiple first heat dissipation holes 122 on its outside. The multiple first heat dissipation holes 122 may be spaced apart along one direction. For example, the first heat dissipation holes 122 may be spaced apart along the first direction or the second direction on the outside of the port 121.

[0094] The handle bar 10 may further be provided with a plurality of second heat dissipation holes 123 . The second heat dissipation holes 123 may also be through holes. The second heat dissipation holes 123 may also be air inlets for the communication device.

[0095] Among them, the second heat dissipation hole 123 and the first heat dissipation hole 122 can be respectively located on two adjacent sides outside the port 121. For example, as shown in Figure 8, the first heat dissipation hole 122 can be located on one side outside the port 121 along the first direction (y direction), and the second heat dissipation hole 123 can be located on one side outside the port 121 along the second direction (z direction).

[0096] Under the condition that the area of ​​the handle bar 10 is certain, such as referring to the communication board in the existing network, the first heat dissipation hole 122 and the second heat dissipation hole 123 are located on both sides adjacent to the port 121, which is beneficial to increase the opening area, enhance air convection, and improve the heat dissipation effect of the plug-in module.

[0097] The handle bar 10 can also include a light board (not shown in the figure) and a display light 17. The light board can be fixedly assembled with the circuit board, and the display light 17 can be passed through the panel 11. The light board is electrically connected to the display light 17. The display light 17 can be used to display the port status, device status, etc.

[0098] FIG9 is a schematic structural diagram of a plug-in module provided in an embodiment of the present application.

[0099] In the plug-in module provided in the embodiment of the present application, the plug-in module may further include a plurality of side walls, each of which may extend along the plug-in direction. For example, as shown in FIG9 , the plurality of side walls may include a side wall 31a and a side wall 31b that are opposite to each other in the first direction (y direction), and may further include a side wall 31c and a side wall 31d that are opposite to each other in the second direction (z direction) (as shown in conjunction with FIG10 and FIG11 ). The side walls 31a, 31c, 31b, and 31d are sequentially connected to form a first housing. The two ends of the first housing along the plug-in direction (y direction) may form a plug end 30a and an interface end 30b, respectively.

[0100] A first heat dissipation structure 200 is provided on the side wall of the plug-in module 300, wherein the first heat dissipation structure 200 can be located on at least one of the side walls 31a, 31b, 31c and 31d. For example, as shown in FIG9 , a first heat dissipation structure 200 is provided on the side wall 31a, and the first heat dissipation structure 200 can be located on one side of the plug-in end 30a along the plug-in and unplugging direction.

[0101] The communication board is plugged into the body of the communication device. When the plug-in end 30a of the plug-in module 300 passes through the port 121 and is plugged into the plug-in interface 22 of the optical cage 20, the first heat dissipation structure 200 is opposite the first heat dissipation hole 122 (see Figure 7). When cold air from the environment enters the communication device body through the first heat dissipation hole 122, it will first contact and pass through the first heat dissipation structure 200, effectively reducing the shell temperature of the plug-in module 300 and improving the heat dissipation effect of the plug-in module 300. In addition, combined with fan speed control within the communication device body, the plug-in module shell temperature can be more effectively controlled to meet long-term application requirements. It can also meet the heat dissipation requirements of high-density designs such as multi-port and multi-channel plug-in modules on the communication board, facilitating the high-density layout of the plug-in module 300 on the communication board.

[0102] Among them, the port 121 can be a square frame structure, and the first heat dissipation hole 122 can be set only on one of the outer sides of the port 121. Correspondingly, in the plug-in module provided in the embodiment of the present application, the first heat dissipation structure 200 can be set only on one of the side walls of the plug-in module 300.

[0103] Alternatively, first heat dissipation holes 122 may be provided on multiple outer sides of the port 121 in a circumferential direction, such as two opposing outer sides of the port 121 along the first direction. Correspondingly, first heat dissipation structures 200 may be provided on multiple sidewalls of the plug-in module 300, for example, first heat dissipation structures 200 may be provided on both sidewall 31a and sidewall 31b.

[0104] The molding materials of the first heat dissipation structure 200 and the sidewalls of the plug-in module 300 may include high thermal conductivity materials, for example, may include metal materials such as copper, which is conducive to enhancing the uniform temperature heat dissipation effect of the plug-in module 300.

[0105] To further improve the uniform heat dissipation effect, in some examples, a carbon film coating may be added to the sidewalls of the plug-in module 300 and the surface of the first heat dissipation structure 200 .

[0106] FIG10 is a schematic side view of the structure of a plug-in module provided in an embodiment of the present application.

[0107] As shown in Figure 10 , the first heat dissipation structure 200 may include a plurality of heat dissipation teeth 201. The heat dissipation teeth 201 may extend along the plugging direction, and the plurality of heat dissipation teeth 201 may be distributed in parallel on the side wall 31a. Of course, in some other examples, the heat dissipation teeth 201 may also extend along other directions, for example, the heat dissipation teeth 201 may also extend along the second direction.

[0108] In the embodiment of the present application, the shape and size of the first heat dissipation structure 200 are not limited. The first heat dissipation structure 200 can be a spike-shaped heat sink, a sheet-shaped heat sink, or a piano-key-shaped heat sink. The multiple heat dissipation teeth 201 of the first heat dissipation structure 200 can be of the same size, or, in some examples, the sizes of the heat dissipation teeth 201 can be different. The multiple heat dissipation teeth 201 can be the same shape, or, in some examples, can be different shapes.

[0109] The first heat dissipation structure 200 can be integrally formed with the side wall of the plug-in module 300, or, in some examples, can be independently formed and then fixed to the side wall, for example, by welding.

[0110] FIG11 is a schematic diagram of a top view of the structure of a plug-in module provided in an embodiment of the present application.

[0111] As shown in Figures 10 and 11 , the plug-in module 300 may further include an unlocking device 33. The unlocking device 33 may be located on a side of the plug-in module 300, for example, on the side wall 31d. The unlocking device 33 may have a locked state and an unlocked state. When the unlocking device 33 is in the locked state, the unlocking device 33 engages with the light cage, ensuring a stable plug-in connection between the plug-in module 300 and the light cage. When the unlocking device 33 is in the unlocked state, the plug-in module 300 is decoupled from the light cage, allowing the plug-in module 300 to be removed from the light cage.

[0112] The unlocking device 33 can be any structural component capable of performing the aforementioned functions. For example, in some examples, the unlocking device 33 can include a buckle and a drawstring structure. The buckle can be disposed on a side wall of the plug-in module (e.g., side wall 31b). A corresponding position on the light cage can include an elastic tongue. The elastic tongue can have a similarly shaped hooking interface. The drawstring structure can cooperate with the elastic tongue. When the plug-in module is plugged into the light cage, the unlocking device can be locked, and the buckle can be hooked on the hooking interface. When the plug-in module needs to be separated from the light cage, the drawstring structure is pulled to move. The drawstring structure can drive the elastic tongue away from the side wall of the plug-in module, separating the buckle from the hooking interface, allowing the plug-in module to be removed from the light cage.

[0113] The packaging form and dimensions (e.g., length in the first and second directions) of the plug-in end 30a of the plug-in module 300 can meet the requirements of the SFP or SFP+ form factor. That is, the plug-in end 30a can be an SFP or SFP+ packaged plug-in end. The GPON and XG(S)-PON & GPON combo module structures and appearances all adopt the above packaging forms, which can achieve mode compatibility. The corresponding communication board's handle bar can have a 16-port high-density design, which is conducive to the high-density expansion and evolution of existing network transmission. Furthermore, the module is miniaturized and has high applicability to meet the needs of existing networks. It can be deployed in the existing equipment space, reducing or avoiding changes to the packaging form of existing network equipment.

[0114] FIG12 is a schematic diagram of the rear structural view of a plug-in module provided in an embodiment of the present application.

[0115] As shown in Figure 12, the interface end 30b of the plug-in module 300 can have two interfaces 32, and the two interfaces 32 can be used to connect to the transmission cables respectively. For example, the two interfaces 32 can both be optical interfaces for realizing connection with optical fibers. The design of the two interfaces 32 can realize the feature of doubling the number of channels of the plug-in module 300, which means that a higher-density interface design can be realized in a limited space, thereby improving space utilization and transmission performance.

[0116] For example, the handle bar may have 16 ports, and when 16 plug-in modules 300 are plugged in, the plug-in modules 300 have a total of 32 optical interfaces 32 , which can achieve a higher-density interface design while having excellent heat dissipation performance.

[0117] The two interfaces 32 can be distributed sequentially along the first direction (y direction), which is beneficial for increasing the opening area of ​​the handle bar, strengthening the convection of air inside and outside the body, and further improving the heat dissipation effect of the communication device. It is also beneficial for reducing the interference between the plug-in module 300 and the handle bar wrench during insertion and removal.

[0118] The interface 32 can be a square connector (SC) type optical interface. The interface 32 can be used to plug in an SC type fiber optic connector. The SC type fiber optic connector is one of the standard size connectors in the industry and is usually used in access network networking to keep the fiber optic shape and connection method of the existing network deployment unchanged, reducing changes and complications to the existing network deployment.

[0119] Figure 13 is a structural schematic diagram of a handle bar of a communication single board provided in an embodiment of the present application, and Figure 14 is an assembly schematic diagram of a handle bar and a light cage in a communication single board provided in an embodiment of the present application.

[0120] It should be noted that since the interface end of the plug-in module has two interfaces, in order to adapt to the two interfaces, the interior of the plug-in module needs to accommodate twice as many optical devices to meet the signal transmission requirements of the two interfaces and optical fibers, etc. Therefore, the length of the plug-in module along the plug-in and unplugging direction is relatively long, especially the part located on the side of the interface end. In order to accommodate more optical devices, the length is longer. In the communication equipment in the existing network, the distance between the cabinet door and the handle bar (panel) is fixed. In order to ensure that the longer plug-in module and the optical fiber connected to it do not interfere with the cabinet door after being plugged into the communication board, the module needs to be retracted inward toward the board as a whole and form a certain oblique angle. For example, as shown in Figure 13, the handle bar 10 can also include a second cavity 14, and the panel 11 is located on one side of the second cavity 14, wherein the second cavity 14 and the circuit board 90 can be located on the same side of the panel 11 (as shown in Figure 15). The panel 11 can be provided with a through opening 111, which is connected to the second cavity 14 and allows the plug-in module to pass through.

[0121] As shown in Figure 14, the second cavity 14 may include a rear side wall 12, which may be opposite to the panel 11. The light cage 20 is located on the side of the rear side wall 12 facing away from the panel 11. A plurality of ports 121, a first heat dissipation hole 122, and a second heat dissipation hole may be respectively opened on the rear side wall 12 of the second cavity 14. The plurality of ports 121 are correspondingly connected to the plug interfaces 22 of the plurality of light cages 20.

[0122] The plug-in end of the plug-in module can pass through the through-hole 111 on the panel 11 and the port 121 on the rear side wall 12 and be plugged into the plug-in interface 22 of the optical cage 20. When the plug-in interface is plugged into the plug-in end, part of the plug-in module is accommodated in the second cavity 14, that is, part of the plug-in module 300 is located in the second cavity 14 (refer to Figure 16), so that the plug-in module is retracted and extended into the second cavity 14 of the handle strip 10, increasing the part of the plug-in module located on the inner side of the panel 11 (facing the circuit board side) or in the body accommodating cavity. The plug-in module will occupy more space inside the communication equipment body, reducing the space occupied by the plug-in module between the panel 11 and the cabinet door, avoiding the interference problem between the plug-in module and the optical fiber on it and the cabinet door, and can achieve the reuse of the current cabinet and cabinet door without the customer having to do external upgrades, and is conducive to the realization of a high-density layout of the plug-in module on the communication board.

[0123] The opening ratio of the first heat dissipation holes 122 on the rear side wall 12 may be less than or equal to 30%, for example, the opening ratio of the first heat dissipation holes 122 may be 28.5%. The opening ratio of the second heat dissipation holes may be less than or equal to 42%.

[0124] It should be noted that the first heat dissipation holes 122 are located on one side of the port 121 along the first direction (y direction). The aperture ratio of the first heat dissipation holes refers to the ratio of the area of ​​the multiple first heat dissipation holes to the maximum outer peripheral area of ​​the holes allowed. The maximum outer peripheral area of ​​the holes allowed refers to the maximum area of ​​holes that can be opened on this side (the side of the port along the first direction), taking into account factors such as the strength of the rear sidewall 12 and the molding process. Correspondingly, the second heat dissipation holes 123 are located on one side of the port along the second direction (z direction). The aperture ratio of the second heat dissipation holes refers to the ratio of the area of ​​the multiple second heat dissipation holes to the maximum outer peripheral area of ​​the holes allowed. The maximum outer peripheral area of ​​the holes allowed refers to the maximum area of ​​holes that can be opened on this side.

[0125] The first heat dissipation hole 122 and the second heat dissipation hole have a larger opening ratio, which is conducive to achieving an excellent heat dissipation effect for the plug-in module.

[0126] In the embodiment of the present application, there is no limitation on the shapes of the first heat dissipation hole and the second heat dissipation hole. For example, the shapes of the first heat dissipation hole 122 and the second heat dissipation hole can be regular shapes such as circles, rectangles, hexagons, etc., or the shapes of the first heat dissipation hole 122 and the second heat dissipation hole can also be other regular or irregular shapes.

[0127] In an embodiment of the present application, one end of the light cage 20 having the plug-in interface 22 can be overlapped with the second cavity 14. For example, the light cage 20 can have an elastic structure, such as a spring or other elastic structure can be provided on the outer wall of the end of the light cage 20 having the plug-in interface 22. The end of the light cage 20 having the plug-in interface 22 can be partially inserted into the second cavity 14. The elastic structure is compressed, and the rebound effect of the elastic structure can well ensure the overlap stability between the light cage 20 and the second cavity 14 (handle strip 10).

[0128] In order to meet the high-density layout of plug-in modules (such as 16 plug-in modules are plugged into a communication board), combined with the spacing between multiple plug-in modules, the length of the plug-in modules, the depth of the plug-in modules inserted into the second cavity relative to the panel (the indentation of the plug-in modules), and the plug-in modules and the optical fibers thereon not interfering with the cabinet doors of the existing network communication equipment, the plug-in and unplugging directions between the plug-in modules and the optical cage can be made inclined relative to the panel of the handle bar (not parallel or vertical), that is, the plug-in modules are inserted into the handle bar along the inclined direction, which is suitable for the conditions of the existing network communication equipment and realizes the high-density layout of the plug-in modules.

[0129] FIG15 is a schematic top view of a handle bar, a circuit board, and an optical cage of a communication board provided in an embodiment of the present application.

[0130] For example, the plug-in port of the light cage can be a square frame structure, the center line of which can be tilted relative to the first direction (panel). For example, as shown in FIG15 , the center line o of the plug-in port of the light cage 20 is tilted relative to the panel 11. For example, the center line o of the plug-in port forms an inclined angle α with the first direction, so that the plug-in direction also forms an inclined angle α with the first direction.

[0131] The tilt angle α can be less than 90°, for example, the tilt angle α can be 70°, which can achieve the reuse of the current body and cabinet door, can make good use of the communication equipment deployed in the existing network, and achieve capacity expansion without deploying new communication equipment bodies.

[0132] To facilitate plugging and unplugging of the plug-in module and the optical cage along a direction oblique to the panel 11 (the first direction), the second cavity 14 may further include a left side wall 15 and a right side wall 16 that are opposite each other in the first direction. The left side wall 15 may be tilted relative to the panel 11 (or the first direction). For example, as shown in Figures 14 and 15 , the left side wall 15 is tilted relative to the panel 11. The tilt angle formed between the left side wall 15 and the panel 11 may be consistent with the tilt angle between the plug-in direction and the first direction, such as angle α. This facilitates accurate plugging and unplugging of the plug-in module end with the optical cage's plug-in interface along the oblique plug-in direction, and can also reduce the volume size of the second cavity 14, thereby reducing the space occupied by the second cavity 14 within the housing cavity or on the circuit board.

[0133] Figure 16 is a structural diagram of another communication board and plug-in module assembly provided in an embodiment of the present application, and Figure 17 is a structural diagram of another communication board and plug-in module disassembled in an embodiment of the present application.

[0134] To further improve the heat dissipation effect, as shown in FIG. 16 and FIG. 17 , the communication board 100 may further include a second heat dissipation structure 50 . The second heat dissipation structure 50 may be located on a side of the second cavity 14 facing away from the panel 11 .

[0135] The second heat dissipation structure 50 can be fixed to the circuit board. For example, the light cage 20 and the second heat dissipation structure 50 can be respectively located on both sides of the circuit board along the second direction, that is, the second heat dissipation structure 50 can be located on the side of the circuit board facing away from the light cage 20.

[0136] Figure 18 is a schematic diagram of the disassembled cross-sectional structure of the second heat dissipation structure, optical cage and third heat dissipation structure in another communication single board provided in an embodiment of the present application, and Figure 19 is a schematic diagram of the assembled cross-sectional structure of the second heat dissipation structure, optical cage, third heat dissipation structure and plug-in module in another communication single board provided in an embodiment of the present application.

[0137] As shown in FIG18 , the optical cage 20 may include a first cavity 23 , which is in communication with the plug-in port 22 . When the plug-in port 22 of the optical cage 20 is plugged into and mated with the plug-in end 30 a of the plug-in module 300 (see FIG19 ), the first cavity 23 accommodates the plug-in end 30 a of the plug-in module 300 , so that the plug-in end 30 a is located within the first cavity 23 .

[0138] Continuing with FIG18 , the light cage 20 may include a bottom wall 211, a top wall 212, and a peripheral side wall 214 located between the bottom wall 211 and the top wall 212. The bottom wall 211 and the top wall 212 may be arranged relative to each other in the second direction (z direction). The bottom wall 211, the top wall 212, and the peripheral side wall 214 together form a second shell having a first cavity 23. One end of the second shell along the plugging direction may have a plug interface 22 for mating with the plug end 30a.

[0139] The light cage 20 may further include a thermally conductive elastic member 24 and a first thermally conductive structure 25 , wherein the thermally conductive elastic member 24 may be fixed on the inner surface of the bottom wall 211 , and the first thermally conductive structure 25 may be fixed on the outer surface of the bottom wall 211 , and the positions of the thermally conductive elastic member 24 and the first thermally conductive structure 25 may be relative.

[0140] The thermally conductive elastic member 24 may be an elastic member protruding toward the first cavity 23, and one end of the thermally conductive elastic member 24 may be connected to the bottom wall 211. The thermally conductive elastic member 24 may be elastically deformable, for example, the thermally conductive elastic member 24 may be a metal spring.

[0141] The thermally conductive elastic member 24 may also be formed of a highly thermally conductive material, such as copper or other metal materials. The first thermally conductive structure 25 may also be formed of a highly thermally conductive material, such as copper or other metal materials.

[0142] To improve the heat dissipation effect of the light cage 20, the molding material of the second shell of the light cage 20 can also include a high thermal conductivity material, for example, it can also include a metal material such as copper. The first thermal conductive structure 25 can be integrally molded with the second shell, or the two can be molded separately, and the first thermal conductive structure 25 can be fixed to the outer surface of the bottom wall 211.

[0143] As shown in Figure 19 , the plug-in end 30a of the plug-in module 300 may include a first side surface 301 and a second side surface 302 (see Figure 10 ), with the first side surface 301 and the second side surface 302 being arranged opposite each other in the second direction. When the plug-in interface 22 of the optical cage 20 is plugged into and mated with the plug-in end 30a of the plug-in module 300, the plug-in end 30a is positioned within the first cavity 23 of the optical cage 20, and the thermally conductive elastic member 24 may abut against the first side surface 301 of the plug-in end 30a. Specifically, when the plug-in end 30a is inserted into the first cavity 23, it compresses the thermally conductive elastic member 24, ensuring reliable contact between the thermally conductive elastic member 24 and the first side surface 301.

[0144] In this way, the heat generated by the plug-in module 300 during operation can be conducted to the outside of the optical cage 20 through the thermally conductive elastic member 24, the bottom wall 211, and the first thermally conductive structure 25 on the outer surface of the bottom wall 211, thereby achieving a better heat dissipation effect, which is conducive to further realizing a high heat dissipation effect of the multi-channel plug-in module.

[0145] For example, heat can be transferred to the second heat dissipation structure 50 through the first heat conducting structure 25 , forming a heat dissipation channel from the plug-in module 300 and the optical cage 20 to the second heat dissipation structure 50 .

[0146] For example, the second heat dissipation structure 50 and the optical cage 20 are respectively located on opposite sides of a circuit board. A through hole may be opened on the circuit board, and the first heat conducting structure 25 may pass through the through hole and abut against the second heat dissipation structure 50 .

[0147] 18 and 19 , the communication board 100 may further include a second heat-conducting structure 60, which may be fixedly disposed on the second heat dissipation structure 50. A through hole may be provided on the circuit board, and the second heat-conducting structure 60 may pass through the through hole and abut against the first heat-conducting structure 25.

[0148] When the plug-in module 300 is working, the heat generated by the internal optoelectronic components can be transferred to the plug-in end 30a through the first shell, and then transferred to the second heat dissipation structure 50 through the thermally conductive elastic member 24, the first thermally conductive structure 25, and the second thermally conductive structure 60, thereby realizing heat transfer from the inside of the plug-in module 300 and the optical cage 20 to the outside.

[0149] Among them, the second heat dissipation structure 50 can be a heat dissipation plate, and the molding material of the second heat dissipation structure 50 can also include a high thermal conductivity material. For example, the second heat dissipation structure 50 can be a metal plate with a relatively large area and better heat dissipation effect, which effectively improves the heat dissipation performance of the plug-in module and the communication board.

[0150] FIG20 is a schematic diagram of a disassembled optical cage and a third heat dissipation structure provided in an embodiment of the present application.

[0151] 19 , the communication board 100 may further include a third heat dissipation structure 70 . As shown in FIG20 , the third heat dissipation structure 70 is fixedly disposed on the outer surface of the top wall 212 of the optical cage 20 . The third heat dissipation structure 70 can further enhance the heat dissipation effect on the plug-in module.

[0152] Specifically, as shown in FIG. 20 , a through slot 213 may be provided on the top wall 212 of the light cage 20 , and the through slot 213 may penetrate the top wall 212 in the third direction (z direction).

[0153] As shown in FIG. 19 , a raised heat-conducting boss 71 may be provided on one side of the top wall 212 of the third heat dissipation structure 70 . The third heat dissipation structure 70 is fixed on the top wall 212 , and the heat-conducting boss 71 may be passed through the through groove 213 .

[0154] When the plug-in interface of the optical cage 20 is plugged into and mated with the plug-in end 30a of the plug-in module 300, as shown in Figure 19, the thermal conductive boss 71 abuts against the second side surface 302 of the plug-in end 30a to form a heat dissipation channel. The heat of the plug-in module 300 can be transferred to the third heat dissipation structure 70 through the second side surface 302 and the thermal conductive boss 71, further enhancing the heat dissipation effect of the plug-in module 300.

[0155] It can be understood that the third heat dissipation structure 70 is located on the outer surface of the top wall 212 of the optical cage 20, the second heat dissipation hole 123 is located on one side of the port 121 along the second direction, and the port 121 is correspondingly connected to the optical cage 20, so that the third heat dissipation structure 70 and the second heat dissipation hole 123 can be opposite to each other. For example, in the plugging and unplugging direction, the third heat dissipation structure 70 and the second heat dissipation hole 123 are arranged relative to each other, which increases the air intake and the air volume flowing through the third heat dissipation structure 70, which is conducive to further improving the heat dissipation effect of the plug-in module.

[0156] The third heat dissipation structure 70 may be a heat pipe radiator, for example, a heat pipe copper or aluminum radiator. Of course, in some other examples, the third heat dissipation structure 70 may also be other types of radiators, for example, a liquid cooling structure such as a cold plate radiator, a spike radiator, a sheet radiator, or a piano key radiator. Alternatively, the third heat dissipation structure 70 may be an air cooling structure such as a fan, or a semiconductor refrigeration unit (TEC).

[0157] To achieve the fixation of the third heat dissipation structure 70 and the optical cage 20, as shown in Figure 20, the communication board may include a snap structure 80, and the snap structure 80 may include a connected abutment 81 and a snap 82, and a snap 82 may be provided on both sides of the abutment 81.

[0158] The abutment member 81 can abut against the side of the third heat dissipation structure 70 facing away from the light cage 20. For example, an abutment groove 72 can be formed on the side of the third heat dissipation structure 70 facing away from the light cage 20. The abutment member 81 can be clamped and abutted in the abutment groove 72. The abutment groove 72 can limit and fix the abutment member 81, facilitate assembly, and help improve the assembly stability between the third heat dissipation structure 70 and the light cage 20.

[0159] The snap-fit ​​member 82 can snap-fit ​​with the second housing of the light cage 20. For example, the snap-fit ​​member 82 can snap-fit ​​with the peripheral sidewall 214 of the second housing. For example, the peripheral sidewall 214 can include two opposing wall surfaces, and the two snap-fit ​​members 82 can snap-fit ​​with the two opposing wall surfaces, respectively, thereby securing the third heat dissipation structure 70 to the light cage 20. The use of the abutment member 81 and the snap-fit ​​member 82 to secure the third heat dissipation structure 70 to the light cage 20 through snap-fitting provides a simple structure and facilitates production and assembly.

[0160] The snap-fitting arrangement of the fastener 82 and the light cage 20 can be achieved in a variety of ways. For example, as shown in FIG20 , a hooking piece 215 can be provided on the peripheral sidewall 214 of the light cage 20. One end of the hooking piece 215 can be fixed to the peripheral sidewall 214, and the other end of the hooking piece can extend outward from the peripheral sidewall 214. A snap-fitting interface 83 can be defined on the fastener 82. The other end of the hooking piece 215 can pass through the snap-fitting interface 83 so that the hooking piece 215 is hooked on the snap-fitting interface 83, thereby achieving a snap-fit ​​connection between the fastener 82 and the light cage 20.

[0161] Alternatively, in some examples, an elastic spring can be provided on the peripheral side wall 214 of the light cage 20, and a slot can be provided on the fastener 82. When the fastener 82 cooperates with the peripheral side wall 214, the elastic spring can be locked in the slot to achieve a snap connection between the two.

[0162] It is understandable that for scenarios where the plug-in modules and communication boards in communication equipment have low power consumption, strong heat dissipation capabilities of the entire device, or are located indoors and have temperature control conditions, and where the heat dissipation requirements for the plug-in modules and communication boards are not very stringent, the heat dissipation requirements can be met through one or more combinations of the first heat dissipation holes (and second heat dissipation holes) on the handle bar, the first heat dissipation structure on the plug-in module, and the third heat dissipation structure on the optical cage, which can save layout space on the board and save costs. For scenarios with more stringent heat dissipation requirements, such as communication equipment located in outdoor environments, achieving high-density designs such as multi-port communication boards and multi-channel plug-in modules, and plug-in module shell temperature requirements reaching 85 degrees working temperature applications, a second heat dissipation structure, a thermally conductive elastic member, a first thermally conductive structure, and a second thermally conductive structure can be added to achieve a better heat dissipation effect.

[0163] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances. The terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0164] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication board, used to connect with a plug-in module, characterized in that: include: A handle bar, the handle bar having a plurality of ports and a first heat dissipation hole, the plurality of ports being distributed along a first direction, the ports being used for the plug-in end of the plug-in module to pass through, and the outer side of each of the ports having the first heat dissipation hole; A plurality of optical cages, each of which has a plug interface, the plug interface is correspondingly connected to the port, and the plug interface is used to be pluggable with the plug end passing through the port; When the plug interface is plugged into the plug end, the first heat dissipation hole is opposite to a first heat dissipation structure which is arranged on a side wall of the plug module extending along the plug-in direction and is located on one side of the plug end along the plug-in direction.

2. The communication board according to claim 1, characterized in that: The optical cage has a first cavity in communication with the plug port, the first cavity includes a bottom wall and a top wall opposite to each other in a second direction, the second direction is respectively perpendicular to the plugging and unplugging direction and the first direction; The optical cage further comprises a heat-conducting elastic member and a first heat-conducting structure, wherein the heat-conducting elastic member is located on the inner surface of the bottom wall, and the first heat-conducting structure is located on the outer surface of the bottom wall, and the heat-conducting elastic member and the first heat-conducting structure are located opposite to each other; The plug-in end includes a first side surface and a second side surface that are opposite to each other in the second direction. When the plug-in interface is plugged into the plug-in end, the plug-in end is accommodated in the first cavity, and the thermally conductive elastic member is in abutment with the first side surface.

3. The communication board according to claim 2, characterized in that: It also includes a second heat dissipation structure and a second heat conductive structure, wherein the second heat conductive structure is fixed on the second heat dissipation structure, and the second heat conductive structure is in abutment with the first heat conductive structure.

4. The communication board according to claim 3, characterized in that: The handle bar comprises a panel and a second cavity, the panel is located at one side of the second cavity, and a through opening is opened on the panel, and the through opening is used for the plug-in module to pass through; The second cavity comprises a rear side wall opposite to the panel, the light cage is located on a side of the rear side wall facing away from the panel, and the rear side wall is provided with the port and the first heat dissipation hole; When the plug-in interface is plugged into the plug-in end, a portion of the plug-in module is accommodated in the second cavity.

5. The communication board according to claim 2, characterized in that: It also includes a third heat dissipation structure, which is arranged on the outer surface of the top wall.

6. The communication board according to claim 5, characterized in that: A through groove is provided on the top wall; The third heat dissipation structure has a heat-conducting boss on a surface facing the top wall, the heat-conducting boss is penetrated through the through groove, and when the plug interface is plugged into the plug end, the heat-conducting boss is in abutment contact with the second side surface of the plug end.

7. The communication board according to claim 6, characterized in that: The handle bar also has a second heat dissipation hole, the first heat dissipation hole is located on one side of the port along the first direction, and the second heat dissipation hole is located on one side of the port along the second direction; The second heat dissipation hole is opposite to the third heat dissipation structure in the plugging direction.

8. The communication board according to claim 7, characterized in that: It also includes a connected abutment member and a buckle member, wherein the buckle members are respectively located on both sides of the abutment member; The abutting member abuts against a side of the third heat dissipation structure facing away from the light cage, and the buckle member is buckled with the light cage.

9. The communication board according to claim 7, characterized in that: The opening rate of the first heat dissipation hole is less than or equal to 30%, and the opening rate of the second heat dissipation hole is less than or equal to 42%.

10. The communication board according to any one of claims 1 to 9, characterized in that: The center line of the plug interface is inclined relative to the first direction, so that the plugging and unplugging direction between the plug interface and the plug end has an inclined angle with the first direction, and the inclined angle is less than 90°.

11. The communication board according to claim 10, characterized in that: The number of the ports is 16.

12. A plug-in module for connecting to a communication board, the communication board comprising a handle bar and an optical cage, characterized in that: The plug-in module includes a plug-in end, and the plug-in end is used to pass through the port on the handle bar and be pluggable and matched with the plug-in interface of the light cage; The plug-in module further comprises a side wall extending along the plug-in direction, the side wall having a first heat dissipation structure, and the first heat dissipation structure is located at one side of the plug-in end along the plug-in direction; When the plug-in end is plugged into the plug-in interface, the first heat dissipation structure is opposite to the first heat dissipation hole which is arranged on the handle bar and located outside the port.

13. The plug-in module according to claim 12, characterized in that: The plug-in module also has an interface end, and the interface end and the plug-in end are respectively located at two ends of the plug-in module along the plug-in direction; The interface end has two interfaces, the two interfaces are used to connect to the transmission cable, and the two interfaces are distributed along a first direction, and the first direction is consistent with the distribution direction of the ports on the handle bar.

14. The plug-in module according to claim 13, characterized in that: The interface includes an SC interface.

15. The plug-in module according to any one of claims 12 to 14, characterized in that: The plug-in terminal includes an SFP+ plug-in terminal or an SFP plug-in terminal.

16. A communication device, characterized in that: It comprises a body and a communication board as described in any one of claims 1 to 11, wherein the body has a slot, and the communication board is inserted in the slot.

17. The communication device according to claim 16, characterized in that It also includes the plug-in module described in any one of claims 12 to 15, and the plug-in module is pluggable and connected to the communication board.

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