Optical module shielding cover, optical module assembly, service board and communication device

Abstract

An optical module shielding cover (1012), an optical module assembly (101), a service board (100) and a communication device (10). The optical module shielding cover (1012) comprises at least one accommodating cavity (10120) for accommodating an optical module (1011), wherein each accommodating cavity (10120) comprises an interface portion (1001), a connecting portion (1005) and a cage portion (1002) which are connected, the interface portion (1001) being configured for connecting to a panel (102), and the interface portion (1001) comprising a first side plate (1001a), a first bottom plate (1001b) and a second side plate (1001c) which are connected in sequence, with the first side plate (1001a) and the second side plate (1001c) being opposite each other. Thus, the panel (102) may be designed with a flat opening, and the optical module shielding cover (1012) is designed with a beveled opening. When the interface portion (1001) with the beveled opening is mated with the panel (102) with the flat opening, the optical module shielding cover (1012) is obliquely inserted into the panel (102) relative to the panel (102), such that horizontal space can be saved, and it is not necessary to adjust a cabinet door and optical fibers. In addition, it is unnecessary to design the panel (102) to extend inwards, the panel (102) may be a sheet-metal panel, and more ventilation holes can be provided in the panel (102), thereby improving the heat dissipation performance.

Description

Optical module shield, optical module assembly, service board and communication device

[0001] The present application claims priority from the Chinese Patent Application No. 202410874467.2 filed on June 28, 2024, and entitled "Optical module shield, optical module assembly, service board and communication device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of optical communication technology, in particular to an optical module shield, an optical module assembly and a service board. BACKGROUND

[0003] With the rapid growth of people's demand for information, fiber to the home is becoming more and more popular, and the number of fiber users and user bandwidth is increasing year by year. The demand for the capacity of fiber systems is becoming higher and higher. Accordingly, the requirements for the port density and port rate of the optical line termination (OLT) single board in the passive optical network (PON) are becoming higher and higher.

[0004] At present, it is difficult for the 16-port symmetric 10-gigabit-capable passive optical network (XGS-PON) and the OLT line card of the multi-mode combination of gigabit-capable passive optical networks (G-PON) to meet the capacity demand. In the future, with the large popularity of higher bandwidth home broadband access and enterprise access demand, 50-gigabit-capable passive optical network (50G-PON) will be the deployment trend of the next stage of wired broadband access.

[0005] In order to save the deployment space of the machine room and reduce the energy consumption of the optical access equipment, the ODN resources of the existing network can be fully utilized, and the optical transceiver module of the multi-mode coexistence of G-PON and XGS-PON is used in the local device. However, the power consumption of the single-mode PON optical module has been greatly increased, and the multi-mode wavelength division coexistence makes the power consumption of the optical module increase exponentially (G-PON 1.2W, G-PON&XGS-PON 3W, G-PON&XGS-PON&50G-PON>5W), and the port density of the PON line card still needs to be maintained at 16, which increases the difficulty of heat dissipation.

[0006] Limited by the space and cost requirements of the machine room, the PON service board adopts a die-casting panel with an inwardly extending beveled opening design, and the optical module is inserted at an angle with the die-casting panel. However, due to process limitations, the die-casting panel cannot achieve high-density openings, affecting the heat dissipation performance of the service board. SUMMARY

[0007] The present application provides an optical module shield, an optical module assembly, a service board and a communication device, which takes into account the heat dissipation performance and the modification cost.

[0008] To achieve the above object, the present application adopts the following technical solutions:

[0009] In a first aspect of the present application, an optical module shield is provided, which includes at least one accommodation cavity for accommodating an optical module, each of the accommodation cavities including an interface part, a connecting part and a cage part connected in sequence; the longitudinal cross-sectional dimension of the interface part is greater than that of the cage part, and the interface part is connected through the connecting part and the cage part; the interface part is used to connect with a panel, and the interface part includes a first side plate, a bottom plate and a second side plate connected in sequence, and the first side plate and the second side plate are opposite. Thus, the panel can adopt a flat opening design, and the optical module shield adopts a beveled opening design. When the interface part with a beveled opening is connected with the panel with a flat opening, the optical module shield is inserted at an angle with the panel, that is, the angle between the axis of the optical module shield and the panel is an acute angle. Compared with perpendicular insertion, space in the horizontal direction can be saved, and adjustment of the cabinet door and optical fiber is not required, thereby reducing the modification cost. Moreover, the optical module shield is connected with the panel through the connecting part, and the panel does not need to adopt an inwardly extending design. The panel can adopt a sheet metal panel, and more ventilation holes can be provided on the panel, thereby improving the heat dissipation performance.

[0010] In an alternative implementation, the shape of the first side plate includes a right-angled triangle. Thus, the first side plate includes a first side, a second side and a third side connected in sequence, wherein the first side is connected with the cage part, the second side is connected with the first bottom plate, and the third side connects the first side and the second side, and the first side, the second side and the third side together enclose a right-angled triangle. The first side and the second side are two right-angled sides of the right-angled triangle, and the third side can be the hypotenuse of the right-angled triangle. The third side is located at the opening of the interface part, and thus the side of the first side plate, the first bottom plate and the second side plate away from the cage part is designed as a beveled opening.

[0011] In an alternative implementation, the connecting portion comprises: a first connecting plate, a second connecting plate, the cage portion is connected to the first side plate through the first connecting plate, and the cage portion is connected to the second side plate through the second connecting plate. In this way, by arranging the first connecting plate and the second connecting plate, the transition of the cage portion and the interface portion can be realized, and the connecting portion can be provided with ventilation holes, the opening rate is increased, and the heat dissipation performance can be further improved. The included angle between the first connecting plate and the first side plate can be less than 90°. In this way, the first side plate is an inclined plate, the area of the first side plate is larger, and more ventilation holes can be arranged.

[0012] In an alternative implementation, the interface portion further comprises: a top plate, the first side plate and the second side plate are connected to the top plate, and the top plate is opposite to the bottom plate, and the length of the top plate along the axis direction of the optical module shield cover is different from the length of the bottom plate along the axis direction of the optical module shield cover. In this way, the lengths of the top plate and the bottom plate of the interface portion are different, the opening of the interface portion is designed to be inclined, can be matched with the panel, and is inserted into the mounting hole of the panel in an inclined manner, so that the space in the horizontal direction can be saved, and the cabinet door and the optical fiber do not need to be adjusted. In addition, the panel does not need to be designed to be internally extended, the panel can be a sheet metal panel, more ventilation holes can be arranged on the panel, and the heat dissipation performance is improved.

[0013] In an alternative implementation, the shape of the first side plate comprises: a right trapezoid. In this way, the first side plate is used to connect the top plate and the bottom plate, and the first side plate comprises, for example: a first side edge, a second side edge, a third side edge and a fourth side edge connected to each other, wherein the first side edge is connected to the first top plate, the second side edge is connected to the cage portion, the third side edge is connected to the first bottom plate, the fourth side edge connects the first side edge and the third side edge, and the first side edge, the second side edge, the third side edge and the fourth side edge together enclose a right trapezoid. The first side edge can be the upper base of the right trapezoid, the second side edge can be the waist of the right trapezoid, the third side edge can be the lower base of the right trapezoid, and the fourth side edge can be the inclined waist of the right trapezoid, and the fourth side edge is located at the opening of the interface portion. In this way, the first top plate, the first side plate, the first bottom plate and the second side plate are designed to be inclined.

[0014] In an alternative implementation, the connecting portion further comprises: a third connecting plate and a fourth connecting plate, the cage portion is connected to the top plate through the third connecting plate, and the cage portion is connected to the bottom plate through the fourth connecting plate. In this way, by arranging the third connecting plate and the fourth connecting plate, the transition of the cage portion and the interface portion can be realized, and the connecting portion can be provided with ventilation holes, the opening rate is increased, and the heat dissipation performance can be further improved. The included angle between the first connecting plate and the first side plate can be less than 90°. In this way, the first side plate is an inclined plate, the area of the first side plate is larger, and more ventilation holes can be arranged.

[0015] In an alternative implementation, the connecting portion is provided with a plurality of first ventilation holes. The projection of the first ventilation hole on the panel along the axis of the optical module shield is within the projection range of the mounting hole on the panel. The first ventilation hole can be in communication with the mounting hole. Thus, the first ventilation hole can be in communication with the optical module assembly and the outside. The outside air can enter the optical module assembly through the mounting hole and enter the cabinet interior through the first ventilation hole to achieve air flow. Thus, by providing the first ventilation hole, air can be introduced from the direction of the mounting hole to air cool the optical module assembly and further improve the heat dissipation performance.

[0016] In an alternative implementation, the accommodating cavities are a plurality of cavities connected with each other. Thus, one optical module shield can include a plurality of accommodating cavities connected with each other. There is no need to provide a gap between the adjacent accommodating cavities, which saves more space. In some embodiments, the cages of the adjacent accommodating cavities are connected. In other embodiments, the interface portions of the adjacent accommodating cavities are connected. The connection of the interface portions of the adjacent accommodating cavities can be welding connection of the interface portions of the adjacent accommodating cavities. Alternatively, the interface portions of the adjacent accommodating cavities can share a top plate or a bottom plate.

[0017] In an alternative implementation, the interface portion includes a plurality of overlapping portions arranged circumferentially along the outer wall of the interface portion. Thus, by providing the overlapping portions on the outer wall of the interface portion, the stability of the connection between the interface portion and the panel can be improved. Meanwhile, the overlapping portions can be used to shield electromagnetic radiation.

[0018] In an alternative implementation, the overlapping portion includes an elastic portion including opposite first and second ends. The first end is connected with the outer wall of the interface portion. The second end is a free end. Thus, when the panel is inserted into the optical module shield, the panel presses down the elastic portion, and the elastic portion is elastically deformed, so that the panel and the overlapping portion are more closely overlapped. In addition, after the panel is pulled out of the optical module shield, the elastic portion is reset, so that the elastic portion can still be in close contact with the panel after multiple insertions and extractions, further improving the shielding effect.

[0019] In an alternative implementation, the angle between the elastic portion and the outer wall of the interface portion is greater than 0° and less than 90°. Thus, when the optical module shield is inserted into the panel, the panel first contacts the first end and then contacts the second end as a free end. The panel can be more smoothly inserted into the optical module shield while the panel and the elastic portion are in closer contact, increasing the stability of the connection and improving the shielding effect.

[0020] In an alternative implementation, the elastic portion further includes a bending portion between the first and second ends. Thus, after the panel contacts the bending portion, the bending portion is pressed down. There is no gap between the bending portion and the panel, achieving better clamping effect. After the panel is separated from the bending portion, the bending portion is reset, which is conducive to the insertion and extraction of the panel.

[0021] In an alternative implementation, the interface portion is provided with a plurality of second vent holes. In this way, the second vent holes provided on the interface portion can communicate the optical module shield and the interior of the cabinet, and air flow can be achieved. In this way, external air can enter the optical module shield through the mounting holes, and flow in the optical module shield and the interior of the cabinet, and the optical module assembly can be air-cooled to further improve the heat dissipation performance.

[0022] In a second aspect, the present application provides an optical module assembly, comprising an optical module and the optical module shield as described above, and the optical module is arranged in the optical module shield. In this way, the optical module assembly adopts the optical module shield as described above, and the heat dissipation performance is better.

[0023] In a third aspect, the present application provides a service board, comprising a panel, a circuit board, a chip, and the optical module assembly as described above, the panel is connected with the circuit board, the chip is arranged on the circuit board, the panel is provided with a plurality of mounting holes, the mounting holes are used for inserting the optical module assembly, and the plurality of mounting holes are arranged along a first direction. In this way, the service board adopts the optical module assembly as described above, and the heat dissipation performance is better.

[0024] In an alternative implementation, the panel is formed by sheet metal processing. In this way, the panel is a sheet metal panel, and the opening rate of the sheet metal panel can reach 60%, and the heat dissipation performance is improved.

[0025] In an alternative implementation, the panel is provided with a plurality of first vent holes, and the plurality of first vent holes are arranged on both sides of the mounting holes along a second direction. In this way, the first vent holes can be arranged on both sides of the mounting holes, and the opening rate is increased, and the heat dissipation performance is improved.

[0026] In an alternative implementation, the first direction is perpendicular to the second direction. In this way, the mounting holes and the vent holes are arranged side by side, and the space in the first direction of the panel can be fully utilized.

[0027] In an alternative implementation, the plurality of mounting holes comprises a plurality of mounting hole groups, each of the mounting hole groups comprises a plurality of mounting holes, and adjacent mounting hole groups are arranged at intervals.

[0028] In an alternative implementation, the panel is provided with a plurality of second ventilation holes, which are arranged between adjacent groups of mounting holes. Thus, each group of mounting holes corresponds to a light module shield having a plurality of accommodation cavities, wherein each accommodation cavity in the light module shield corresponds to one mounting hole in the group of mounting holes, and adjacent groups of mounting holes are arranged at intervals, and each group of mounting holes comprises a plurality of mounting holes, which are arranged adjacently. In this way, not only can the first ventilation holes be arranged on both sides of the mounting holes, but also the third ventilation holes can be arranged between adjacent groups of mounting holes, and the number of ventilation holes on the panel is larger, and the opening ratio of the panel is further improved, and the heat dissipation performance is improved.

[0029] In a fourth aspect of the present application, a communication device is provided, which comprises a cabinet and a service board as described above, and the service board is inserted into a slot on the cabinet. Thus, the communication device adopts the service board described above, and the heat dissipation performance is better. BRIEF DESCRIPTION OF DRAWINGS

[0030] FIG. 1 is a structural schematic diagram of a passive optical network system provided by the present application;

[0031] FIG. 2 is a structural schematic diagram of a communication device provided by the present application;

[0032] FIG. 3 is a structural schematic diagram of a service board;

[0033] FIG. 4 is a structural schematic diagram of a light module heat dissipation device;

[0034] FIG. 5 is a structural schematic diagram of another service board;

[0035] FIG. 6 is a structural schematic diagram of a panel in FIG. 5;

[0036] FIG. 7 is a structural schematic diagram of another service board;

[0037] FIG. 8 is a structural schematic diagram of a panel in FIG. 7;

[0038] FIG. 9 is a structural schematic diagram of a service board provided by the present application;

[0039] FIG. 10 is a structural schematic diagram of a panel in FIG. 9;

[0040] FIG. 11 is an enlarged view of a light module assembly in FIG. 9;

[0041] FIG. 12A is a perspective view of a light module shield provided by the present application in a first orientation;

[0042] FIG. 12B is a perspective view of a light module shield provided by the present application in a second orientation;

[0043] FIG. 13 is a structural schematic diagram of another service board provided by the present application;

[0044] Fig. 14 is a structural schematic diagram of the panel in Fig. 13;

[0045] Fig. 15 is a partial enlarged view of Fig. 13;

[0046] Fig. 16 is a connection structure schematic diagram of the optical module assembly and the panel provided by the embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings.

[0048] Hereinafter, the terms "first", "second" and the like are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0049] In addition, in the present application, the orientation terms such as "upper", "lower" and the like are defined with respect to the orientation of the components shown in the drawings,

[0050] It should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation of the components placed in the drawings.

[0051] Fig. 1 is a structural schematic diagram of a passive optical network system. Please refer to Fig. 1, the passive optical network system comprises an optical line termination (OLT) 1, a passive optical splitter (POS) 2 and an optical network unit (ONU) 3, wherein the optical line termination 1 needs to use an optical module as an electro-optical or opto-electric conversion device, and the communication rate of the optical module determines the rate of the entire passive optical network system.

[0052] Therefore, the present application provides a service board and a communication device, wherein the communication device can be any optical line termination device which needs to be connected with an optical module.

[0053] Fig. 2 is a structural schematic diagram of a communication device provided by an embodiment of the present application. As shown in Fig. 2, the communication device 10 comprises, for example, a cabinet 110 and a service board 100. The cabinet 110 can have a plurality of slot positions, and the service board 100 can be inserted into the slot positions. The cabinet 110 can have a plurality of slot positions, and each slot position can accommodate one service board 100. When a plurality of service boards are configured, the plurality of service boards 100 can be arranged in a horizontal direction as shown in Fig. 2. Alternatively, the plurality of service boards can be arranged in a vertical direction.

[0054] In order to improve the heat dissipation performance of the cabinet, as shown in Fig. 4, the optical module assembly 101 is provided with a heat dissipation member 1010. The heat dissipation member 1010 can transfer the heat generated by the optical module assembly 101 to the outside, thereby enhancing the heat dissipation effect of the optical module assembly 101. The heat dissipation member 1010 can meet the heat dissipation requirement in the scenario of dense arrangement of high-power optical modules.

[0055] In an example, the heat dissipation member 1010 can be a heat dissipation fin. The heat dissipation fin has a large heat dissipation area, and can dissipate the heat accumulated therein by using the external cooling air flow.

[0056] In some embodiments, as shown in Fig. 2, the communication device further comprises a fan 13 and an air duct structure. The fan 13 is used to generate an air flow (the arrow in Fig. 3 represents the direction of the air flow) from the air inlet to the air outlet. The air flow can carry away the heat on the heat dissipation member 1010.

[0057] The heat generated by the optical module assembly 101 is transferred to the outside through the heat dissipation member 1010, and then carried away by the air flow generated by the fan 13, thereby achieving effective heat dissipation of the optical module assembly 101 and meeting the heat dissipation requirement in the scenario of dense arrangement of high-power optical modules.

[0058] In the air duct structure, the air duct structure can be formed by the cabinet or other structural members. The fan 13 can be arranged in the air duct structure, for example, near the air inlet or the air outlet. Different air duct structures and orientations of the fan 13 can form air flows in different directions. For example, referring to Fig. 3, the inner cavity of the air duct structure extends upward and downward, and the fan 13 generates an air flow that enters from the bottom and exits from the top. For another example, the inner cavity of the air duct structure can extend leftward and rightward, and the fan 13 generates an air flow that enters from the left and exits from the right. Alternatively, the inner cavity of the air duct structure can extend forward and backward, and the fan 13 generates an air flow that enters from the front and exits from the back. These modes can all achieve air cooling for the heat dissipation structure of the optical module assembly 101 in the air duct structure.

[0059] Referring to Fig. 2, the communication device can further comprise a main control board 12, a general-purpose input / output (GPIO) board 15, and a power module 14.

[0060] The main control board 12 can be responsible for the management and control of the whole system, including system configuration, fault monitoring, software upgrade and network security and the like, and the main control board 12 is connected with the service board 100 to realize the control and management of the multiple service boards 100, so that all the service boards 100 and the functional modules work cooperatively. The communication device 10 can realize the input and output of signals through the GPIO board 15. The power module 14 is used for power supply of the service board 100.

[0061] Fig. 5 is a structural schematic view of a service board. The service board 100 comprises a panel 102, a circuit board 104, a chip 103 and multiple optical module assemblies 101, wherein the chip 103 and the optical module assemblies 101 are arranged on the circuit board 104.

[0062] For example, each service board 100 comprises 8 / 16 / 32 mounting holes, and each mounting hole is provided with an optical module assembly to realize multi-mode passive optical network access. As shown in Fig. 6, the panel 102 is provided with 16 mounting holes 1021, and the mounting holes 1021 are used for inserting the optical module assemblies 101.

[0063] As shown in Fig. 5, the optical module adopts SFP+ (Small Form-factor Pluggable) package. In order to avoid the size limitation of the cabinet 110 causing the fiber top door in the optical module, the 16 small form-factor pluggable optical module assemblies 101 can adopt a slanting layout, that is, a bevel can be arranged on the panel 102, so that the 16 small form-factor pluggable optical module assemblies 101 are inserted into the mounting holes 1021 of the panel 102 in a slanting direction, and the shielding cover of the optical module is retracted inside the panel 102, so that the cabinet door and the fiber do not need to be adjusted.

[0064] In the embodiment, multiple optical modules can adopt a GPON and XGSPON multi-mode coexistence optical transceiver module. However, the power consumption of the single-mode PON optical module has been greatly increased, and the multi-mode wavelength division coexistence doubles the power consumption of the optical module, and the density of the mounting holes 1021 still needs to be maintained at 16, which increases the difficulty of heat dissipation.

[0065] As shown in Figs. 6 and 8, multiple third ventilation holes 1022 can be arranged on the panel 102, the third ventilation holes 1022 can be communicated with the cabinet 110 and the outside, and the outside air can enter the inside of the optical module assembly 101 through the third ventilation holes 1022, the optical module assembly 101 is communicated with the inside of the cabinet 110 to realize the air flow. In this way, by arranging the third ventilation holes 1022, air can be taken in from multiple directions to air-cool and dissipate heat for the optical module assembly 101, and the heat dissipation performance is further improved.

[0066] In some embodiments, referring to FIG. 5, the panel 102 can adopt a die-casting panel, the optical module shield cover can be lapped with the panel 102 inside the cabinet 110, and can be compatible with the existing GPON module. The die-casting panel can be formed by injecting molten metal into the inside of a mold and then being cooled by casting processing. However, due to process limitations, the die-casting panel cannot realize high-density openings. Referring to FIG. 6, the maximum opening rate of the panel 102 is 30%, which affects the heat dissipation performance. The opening rate of the die-casting panel is the ratio of the total area of the plurality of third ventilation holes 1022 on the die-casting panel to the total area of the panel 102.

[0067] In other embodiments, in order to improve the heat dissipation performance of the panel 102, the panel 102 can adopt a sheet metal panel 102. Referring to FIG. 8, the opening rate of the panel 102 can reach 60%, which improves the heat dissipation performance. The opening rate of the sheet metal panel is the ratio of the total area of the third ventilation holes 1022 on the sheet metal panel to the total area of the sheet metal panel.

[0068] However, the sheet metal panel 102 cannot be provided with a bevel to lap with the optical module shield cover inside, as shown in FIG. 7, the 16 small form-factor pluggable optical modules can adopt a straight-out layout, and the existing cabinet 110 cannot accommodate the service board 100. It is necessary to adjust the cabinet door or the length of the optical fiber of the cabinet 110. For example, a flat door cabinet 110 can be used in cooperation with an ultra-short tail optical fiber, or the cabinet door of the cabinet 110 can be provided as a convex door to accommodate the service board 100 of the sheet metal panel 102, and a conversion module can be added to realize the compatibility of the small form-factor pluggable optical modules. The modification of the machine room is large, and the modification cost is increased.

[0069] Therefore, the embodiments of the present application provide an improved service board 100, which can take into account the heat dissipation and the modification cost.

[0070] As shown in FIG. 9, the service board 100 includes a panel 102, a circuit board 104, a chip 103, and a plurality of optical module assemblies 101. The chip 103 is arranged on the circuit board 104, and the chip and the optical module shield cover are arranged on the circuit board 104. The panel 102 is provided with at least one mounting hole 1021 for inserting the optical module assembly 101.

[0071] The circuit board 104 can be a printed circuit board (PCB) serving as the support of the entire service board 100.

[0072] The panel 102 is formed by a sheet metal process, that is, the panel 102 is a sheet metal panel. As shown in FIG. 10, the opening rate of the sheet metal panel can reach 60%, which improves the heat dissipation performance.

[0073] For example, the service board 100 includes a plurality of optical module assemblies 101, each of which includes an optical module 1011 and an optical module shield 1012. An opening on the side of the panel 102 of each optical module shield 1012 corresponds to a plug-in optical module 1011, so that the optical module 1011 is electrically connected to the optical module shield 1012. The optical module shield 1012 is electrically connected to the chip 103 through the circuit board 104, thereby realizing the electrical connection between the chip 103 and the optical module 1011. The signal can be transmitted from the optical module 1011 to the chip 103 of the service board 100 to realize the transmission and processing of the signal.

[0074] In some embodiments, the opening on the panel 102 is a flat opening. The structure of the optical module 1011 assembly 101 can be adjusted so that the optical module 1011 assembly 101 can be inserted obliquely into the mounting hole 1021 of the panel 102.

[0075] In some embodiments, as shown in FIG. 11, the optical module shield 1012 includes at least one accommodation cavity 10120 for accommodating the optical module 1011.

[0076] The structure of the optical module 1011 is not limited in the embodiments. In some embodiments, as shown in FIG. 11, the optical module 1011 includes a first part 1003 and a second part 1004. The longitudinal cross-sectional dimension of the first part 1003 is greater than that of the second part 1004.

[0077] Referring to FIG. 11, the optical module shield 1012 is sleeved on the outside of the optical module 1011. The accommodation cavity 10120 of the optical module shield 1012 includes an interface part 1001, a connecting part 1005 and a cage part 1002 connected to each other. The connecting part 1005 is used to connect the interface part 1001 and the cage part 1002. The interface part 1001 is sleeved on the first part 1003 of the optical module 1011, and the cage part 1002 is sleeved on the second part 1004 of the optical module 1011. The longitudinal cross-sectional dimension of the interface part 1001 is greater than that of the cage part 1002.

[0078] The interface part 1001 is also used to connect with the panel 102. In the present application, the panel 102 is a metal panel, and the opening on the panel 102 is, for example, a flat opening. The shape of the opening of the optical module shielding cover 1012 can be adjusted, for example, the opening of the optical module shielding cover 1012 can be an inclined opening. As shown in FIG. 11 and FIG. 16, when the interface part 1001 with the inclined opening is connected with the panel 102 with the flat opening, the optical module shielding cover 1012 is inserted into the panel 102 at an angle. In the present application, when the panel 102 is directly inserted into the optical module shielding cover 1012, the angle between the axis O of the optical module shielding cover 1012 and the panel 102 is a right angle. When the panel 102 is inserted into the optical module shielding cover 1012 at an angle, the angle between the axis O of the optical module shielding cover 1012 and the panel 102 is an acute angle.

[0079] For example, as shown in FIG. 11 and FIG. 16, the panel 102 is located in the xz plane, and the angle between the axis O of the optical module shielding cover 1012 and the xz plane is less than 90°, for example, 45°.

[0080] FIG. 12A is a perspective view of the optical module shielding cover in a first orientation according to an embodiment of the present application. In some embodiments, as shown in FIG. 12A, the interface part 1001 includes a first side plate 1001a, a first bottom plate 1001b, a second side plate 1001c and a first top plate 1001d connected in sequence, and the first bottom plate 1001b, the first side plate 1001a, the first top plate 1001d and the second side plate 1001c together form a cylindrical structure with both ends open.

[0081] In the present application, the first bottom plate 1001b and the first top plate 1001d of the optical module shielding cover 1012 are parallel, and the first side plate 1001a and the second side plate 1001c are parallel.

[0082] The present application does not limit the shapes of the first top plate 1001d, the first bottom plate 1001b, the first side plate 1001a and the second side plate 1001c. In some embodiments, the shape of the first top plate 1001d includes a rectangle, and the shape of the first bottom plate 1001b includes a rectangle.

[0083] In some embodiments, as shown in FIG. 11, the length of the first top plate 1001d along the axis O of the optical module shielding cover 1012 is less than the length of the first bottom plate 1001b along the axis O of the optical module shielding cover 1012, or the length of the first top plate 1001d along the axis O of the optical module shielding cover 1012 is greater than the length of the first bottom plate 1001b along the axis O of the optical module shielding cover 1012, and the opening of the interface part 1001 is an inclined opening.

[0084] The first side plate 1001a and the second side plate 1001c are used to connect the first top plate 1001d and the first bottom plate 1001b, and the first side plate 1001a and the second side plate 1001c are parallel. The shape of the first side plate 1001a includes: a right trapezoid. The second side plate 1001c can adopt the same shape as the first side plate 1001a.

[0085] For example, the first side plate 1001a includes: a first side, a second side, a third side and a fourth side connected together, wherein the first side is connected with the first top plate 1001d, the second side is connected with the cage part 1002, the third side is connected with the first bottom plate 1001b, and the fourth side connects the first side and the third side, and the first side, the second side, the third side and the fourth side together form a right trapezoid. The first side can be the upper base of the right trapezoid, the second side can be the waist of the right trapezoid, the third side can be the lower base of the right trapezoid, and the fourth side can be the oblique waist of the right trapezoid. The fourth side is located at the opening of the interface part, so that the first top plate 1001d, the first side plate 1001a, the first bottom plate 1001b and the second side plate 1001c are designed as an oblique opening. Correspondingly, the second side plate 1001c has the same structure as the first side plate 1001a, and the second side plate 1001c is parallel to the first side plate 1001a, so that the end of the second side plate 1001c away from the cage part 1002 is an oblique side. In this way, the first side plate 1001a, the first bottom plate 1001b and the second side plate 1001c away from the cage part 1002 are designed as an oblique opening.

[0086] The mounting hole 1021 is designed as a flat opening, the end of the first side plate 1001a, the first bottom plate 1001b, the second side plate 1001c and the first top plate 1001d away from the cage part is designed as an oblique opening, and when the optical module shielding cover 1012 is docked with the panel 102, the first side plate 1001a, the first bottom plate 1001b, the second side plate 1001c and the first top plate 1001d can be clamped with the mounting hole 1021 on the panel 102, wherein, as shown in FIG. 16, the oblique side of the first side plate 1001a is aligned with the straight side of the mounting hole 1021, and when the panel 102 is inserted with the optical module shielding cover 1012, the optical module shielding cover 1012 and the panel 102 are inserted in an oblique direction. That is, the angle between the axis O of the assembled optical module shielding cover and the panel 102 is an acute angle.

[0087] When the light module shield 1012 is lapped with the panel 102, the first top plate 1001d of the light module shield can be lapped with the upper side of the mounting hole 1021, the first bottom plate 1001b of the light module shield can be lapped with the lower side of the mounting hole 1021, the first side plate 1001a of the light module shield can be lapped with the left side of the mounting hole 1021, and the second side plate 1001c of the light module shield can be lapped with the right side of the mounting hole 1021. The upper side and the lower side of the mounting hole 1021 are arranged along the z direction, and the left side and the right side of the mounting hole are arranged along the x direction.

[0088] In some embodiments, the interface part 1001 comprises a first side plate 1001a, a first bottom plate 1001b and a second side plate 1001c connected in sequence.

[0089] The shape of the first bottom plate 1001b, the first side plate 1001a and the second side plate 1001c is not limited in the embodiments of the present application. In some embodiments, the shape of the first bottom plate 1001b comprises a rectangle.

[0090] The first side plate 1001a and the second side plate 1001c are respectively connected with two opposite sides of the first bottom plate 1001b. The shape of the first side plate 1001a comprises a right triangle. The second side plate 1001c can adopt the same shape as the first side plate 1001a.

[0091] For example, the first side plate 1001a comprises a first side, a second side and a third side connected with each other, wherein the first side is connected with the cage part 1002, the second side is connected with the first bottom plate 1001b, and the third side connects the first side and the second side, and the first side, the second side and the third side jointly form a right triangle. The first side and the second side are two right sides of the right triangle, and the third side can be a hypotenuse of the right triangle. Correspondingly, the second side plate 1001c has the same structure as the first side plate 1001a, and the second side plate 1001c is parallel to the first side plate 1001a, so that an end of the second side plate 1001c away from the cage part 1002 is a hypotenuse. In this way, the first side plate 1001a, the first bottom plate 1001b and the second side plate 1001c are designed as an oblique opening on the side away from the cage part 1002.

[0092] The mounting hole 1021 is flat, the first side plate 1001a, the first bottom plate 1001b and the second side plate 1001c are arranged in a bevel, and the first side plate 1001a, the first bottom plate 1001b and the second side plate 1001c are clamped with the mounting hole 1021 on the panel 102 when the optical module shielding cover 1012 is connected with the panel 102, wherein the bevel of the first side plate 1001a is aligned with the straight edge of the mounting hole 1021, and the angle between the axis O of the assembled optical module shielding cover and the panel 102 is an acute angle, that is, the optical module shielding cover 1012 is inserted into the mounting hole 1021 in an oblique direction.

[0093] The optical module shielding cover 1012 provided by the embodiment of the present application adopts a bevel design, and the panel 102 can adopt a flat design. When the interface part with an open bevel is connected with the panel 102 with an open flat, the optical module shielding cover 1012 is inserted into the mounting hole 1021 of the panel 102 in an oblique direction, that is, the angle between the axis of the optical module shielding cover and the panel is an acute angle. Compared with the straight insertion layout, the space in the horizontal direction (y direction) can be saved, and the cabinet door and the optical fiber do not need to be adjusted. In addition, the panel 102 does not need to adopt an inner extension design, and the panel 102 can adopt a metal panel 102, more third ventilation holes 1022 can be arranged on the panel 102, and the heat dissipation performance is improved.

[0094] The embodiment of the present application does not limit the arrangement mode of the second ventilation hole and the first mounting hole. In some embodiments, as shown in FIG. 10, the panel 102 is provided with a plurality of third ventilation holes 1022 and a plurality of mounting holes 1021, wherein the plurality of mounting holes 1021 are arranged along the first direction (z direction), and the third ventilation holes 1022 are arranged on both sides of the row of mounting holes 1021 along the second direction (x direction).

[0095] In some embodiments, as shown in FIG. 11, the optical module shielding cover 1012 further includes a connecting part 1005, and the interface part 1001 is connected with the cage part 1002 through the connecting part 1005.

[0096] The embodiment of the present application does not limit the structure of the connecting part 1005. FIG. 12B is a perspective view of the optical module shielding cover provided by the embodiment of the present application in the second orientation. As shown in FIG. 12B, the connecting part 1005 includes a first connecting plate 1005a and a second connecting plate 1005c.

[0097] The first connecting plate 1005a is connected with the first side plate 1001a, and the second connecting plate 1005c is connected with the second side plate 1001c.

[0098] The embodiments of the present application do not limit the structure of the cage part 1002. In some embodiments, as shown in FIG. 12A, the cage part 1002 includes a third side plate 1002a, a second bottom plate 1002b, a fourth side plate 1002c and a second top plate 1002d connected in sequence. The third side plate 1002a is connected with the first side plate 1001a through a first connecting plate 1005a, and the fourth side plate 1002c is connected with the second side plate 1001c through a second connecting plate 1005c.

[0099] To further improve the heat dissipation performance of the optical module shield 1012, the first ventilation hole 1023 can also be arranged on the connecting part 1005.

[0100] The first ventilation hole 1023 arranged on the connecting part 1005 can be arranged on the first connecting plate 1005a and the second connecting plate 1005c.

[0101] In some embodiments, as shown in FIG. 11, the connecting part 1005 further includes a third connecting plate 1005b and a fourth connecting plate 1005d.

[0102] The second bottom plate 1002b is connected with the first bottom plate 1001b through the third connecting plate 1005b, and the second top plate 1002d is connected with the first top plate 1001d through the fourth connecting plate 1005d.

[0103] The first ventilation hole 1023 arranged on the connecting part 1005 can also be arranged on the third connecting plate 1005b and the fourth connecting plate 1005d.

[0104] In some embodiments, the first connecting plate 1005a, the third connecting plate 1005b, the second connecting plate 1005c and the fourth connecting plate 1005d are connected in sequence, and the first connecting plate 1005a, the third connecting plate 1005b, the second connecting plate 1005c and the fourth connecting plate 1005d together enclose a rectangular frame.

[0105] The present application arranges the first ventilation hole 1023 on the connecting part, the projection of the first ventilation hole 1023 on the panel 102 along the axis O of the optical module shield 1012 is located within the projection range of the mounting hole 1021 on the panel 102, the first ventilation hole 1023 can be in communication with the mounting hole 1021, so that the first ventilation hole 1023 can be in communication with the optical module assembly 101 and the outside, and the outside air can enter the optical module assembly through the mounting hole 1021 and enter the cabinet interior through the first ventilation hole 1023, realizing air flow. In this way, by arranging the first ventilation hole 1023, air can be introduced from the direction of the mounting hole 1021 to air-cool and dissipate heat for the optical module assembly 101, further improving the heat dissipation performance.

[0106] In some embodiments, as shown in FIG. 12A and FIG. 12B, a second vent hole 1025 can also be arranged on the side wall of the interface part. For example, as shown in FIG. 12A, the second vent hole 1025 can be arranged on the first side plate 1001a, the first bottom plate 1001b and the second side plate 1001c. As shown in FIG. 12B, the second vent hole 1025 can also be arranged on the first top plate 1001d. In this way, the inside of the optical module shield cover and the outside can be further communicated.

[0107] In this way, the second vent hole 1025 can communicate the optical module shield cover and the inside of the cabinet, so as to realize air flow. In this way, external air can enter the inside of the optical module shield cover through the mounting hole 1021, and flow in the optical module shield cover and the inside of the cabinet, so as to cool and dissipate heat for the optical module assembly 101, and further improve the heat dissipation performance.

[0108] The position relationship between the connecting part, the cage part and the interface part is not limited in the embodiments. In some embodiments, the cage part 1002 is parallel to the interface part 1001. That is, the third side plate 1002a is parallel to the first side plate 1001a, the fourth side plate 1002c is parallel to the second side plate 1001c, the second bottom plate 1002b is parallel to the first bottom plate 1001b, and the second top plate 1002d is parallel to the first top plate 1001d.

[0109] The plane where the connecting part 1005 is located intersects the cage part 1002. In some embodiments, the plane where the connecting part 1005 is located is perpendicular to the cage part 1002. For example, the third side plate 1002a is perpendicular to the first connecting plate 1005a, the fourth side plate 1002c is perpendicular to the second connecting plate 1005c, the second bottom plate 1002b is perpendicular to the third connecting plate 1005b, and the second top plate 1002d is perpendicular to the fourth connecting plate 1005d.

[0110] In other embodiments, the connecting part 1005 is an inclined plate, and the angle between at least one connecting plate of the connecting part 1005 and the side plate of the cage part 1002 connected thereto is not perpendicular. That is, the angle between at least one connecting plate of the connecting part 1005 and the side plate of the cage part 1002 connected thereto is an acute angle (greater than 0° and less than 90°) or an obtuse angle (greater than 90° and less than 180°).

[0111] For example, the angles between the four connecting plates of the connecting part 1005 and the side plates of the cage part 1002 connected thereto are all acute angles.

[0112] Alternatively, the angles between the four connecting plates of the connecting part 1005 and the side plates of the cage part 1002 connected thereto are all obtuse angles.

[0113] Alternatively, the included angle between the four connecting plates of the connecting part 1005 and the side plates of the cage part 1002 connected therewith is an acute angle, a part of an obtuse angle or a right angle. These all belong to the protection scope of the present application and will not be described here.

[0114] Thus, the size of the connecting part 1005 of the inclined plate structure is larger, more ventilation holes can be provided, and the heat dissipation performance of the optical module shielding cover can be further improved.

[0115] The present application does not limit the connecting structure of the interface part and the panel. Illustratively, the interface part 1001 comprises a plurality of overlapping parts 1000, which are arranged circumferentially along the outer wall of the interface part 1001. The overlapping part 1000 is used to contact the inner wall of the mounting hole 1021 of the panel 102. This structure can make the interface part 1001 and the panel 102 be clamped, thereby improving the stability of the connection between the interface part 1001 and the panel 102, and the overlapping part 1000 can be used to shield electromagnetic radiation.

[0116] The present application does not limit the number of the overlapping parts 1000. For example, the outer wall of the first side plate 1001a, the second side plate 1001c and the first top plate 1001d is provided with two overlapping parts 1000, and the outer wall of the first bottom plate 1001b is provided with only one overlapping part 1000.

[0117] The present application does not limit the connecting mode of the overlapping part 1000 and the outer wall of the interface part 1001. For example, it can be fixed connection, clamping, integral molding, etc.

[0118] The present application does not limit the structure of the overlapping part 1000.

[0119] As shown in FIGS. 12A and 12B, the overlapping part 1000 comprises an elastic part 11, which comprises a first end 111 and a second end 112 opposite to each other, the first end 111 is connected with the outer wall of the interface part 1001, and the second end 112 is a free end.

[0120] It should be noted that the aforementioned free end refers to an end not directly connected with other components.

[0121] When the panel 102 is inserted into the optical module shielding cover 1012, the panel 102 presses down the elastic part 11, and the elastic part 11 is elastically deformed, so that the panel 102 and the overlapping part 1000 are more closely overlapped. In addition, after the panel 102 is pulled out of the optical module shielding cover 1012, the elastic part 11 resets, so that the elastic part can still be in close contact with the panel 102 after multiple insertion and extraction, thereby improving the shielding effect.

[0122] The extension direction of the elastic part 11 is not limited in the present application. Please refer to FIG. 12A again. Compared with the first end 111 of the elastic part, the second end 112 of the elastic part is farther away from the outer wall of the interface part 1001. The included angle between the elastic part and the outer wall of the interface part 1001 is greater than 0° and less than 90°. For example, the angle between the elastic part 11 and the outer wall of the interface part 1001 can be 5°, 10°, 30°, 35°, 40°, 45°, 50°, 60°, 70°, 85°, etc. The second end 112 of the elastic part 11 extends along the insertion direction of the panel 102. The optical module shielding cover 1012 can be more smoothly plugged with the panel 102.

[0123] In other embodiments of the present application, the distance between the first end 111 and the second end 112 of the elastic part 11 and the outer wall of the interface part 1001 is almost equal.

[0124] Please refer to FIG. 12A again. In some embodiments of the present application, the elastic part 11 further comprises a bending part 113 between the first end 111 and the second end 112. After the panel 102 contacts the bending part 113, the bending part 113 is pressed down. There is no gap between the bending part 113 and the panel 102, which realizes better clamping effect. After the panel 102 is separated from the bending part 113, the bending part 113 resets, which is beneficial to the plugging of the panel 102 and better shielding effect.

[0125] The shape of the bending part 113 is not limited in the present application. In some embodiments, the bending part 113 is V-shaped structure, or the bending part 113 is W-shaped structure. Alternatively, the bending part 113 is a smooth transition arc structure. The aforementioned three shapes of the bending part 113 can better realize clamping while having a large amount of downward pressure after contacting the panel 102.

[0126] It can be understood that in other embodiments of the present application, the elastic part 11 can not comprise the bending part 113. For example, the elastic part 11 is a straight plate. It is understood that the straight plate elastic part 11 also has better shielding effect after contacting the panel 102.

[0127] Please refer to FIG. 12A again. In the present embodiment, the outer wall of the first side plate 1001a, the second side plate 1001c, the first top plate 1001d and the first bottom plate 1001b is provided with a lap joint part 1000.

[0128] Please refer to FIG. 9. The optical module shielding cover 1012 comprises at least one accommodating cavity 10120 for accommodating the optical module 1011.

[0129] The number of accommodating cavities 10120 included in the optical module shield 1012 is not limited in the present application. As shown in FIG. 9 and FIG. 12A, the optical module shield 1012 includes one accommodating cavity 10120. As shown in FIG. 13 and FIG. 15, the optical module shield 1012 includes four accommodating cavities 10120. In other embodiments of the present application, the optical module shield 1012 can include two, three or more accommodating cavities 10120, adjacent accommodating cavities 10120 are connected, and adjacent optical module shields 1012 are arranged at intervals.

[0130] The connection manner of adjacent accommodating cavities 10120 is not limited in the embodiments of the present application. Referring to FIG. 15, the cage part 1002 of four adjacent accommodating cavities 10120 is connected, and the four accommodating cavities 10120 form an optical module shield. The optical module shield includes a first accommodating cavity 1012a, a second accommodating cavity 1012b, a third accommodating cavity 1012c and a fourth accommodating cavity 1012d, and the first accommodating cavity 1012a, the second accommodating cavity 1012b, the third accommodating cavity 1012c and the fourth accommodating cavity 1012d have the same structure.

[0131] In some embodiments, the cage part 1002 of adjacent accommodating cavities 10120 is connected. For example, the cage part 1002 of adjacent accommodating cavities 10120 can be connected by welding. The second top plate 1002d of the second accommodating cavity 1012b is arranged adjacent to the second bottom plate 1002c of the first accommodating cavity 1012a, the second top plate 1002d of the third accommodating cavity 1012c is arranged adjacent to the second bottom plate 1002c of the second accommodating cavity 1012b, and the second top plate 1002d of the fourth accommodating cavity 1012d is arranged adjacent to the second bottom plate 1002c of the third accommodating cavity 1012c. For example, the second top plate 1002d of the second accommodating cavity 1012b is connected to the second bottom plate 1002c of the first accommodating cavity 1012a, the second top plate 1002d of the third accommodating cavity 1012c is connected to the second bottom plate 1002c of the second accommodating cavity 1012b, and the second top plate 1002d of the fourth accommodating cavity 1012d is connected to the second bottom plate 1002c of the third accommodating cavity 1012c.

[0132] In some embodiments, the interface part 1001 of the adjacent accommodation cavities 10120 is connected. For example, the interface part 1001 of the adjacent accommodation cavities 10120 is welded. For example, the first top plate 1001d of the second accommodation cavity 1012b is arranged adjacent to the first bottom plate 1001b of the first accommodation cavity 1012a, the first top plate 1001d of the third accommodation cavity 1012c is arranged adjacent to the first bottom plate 1001b of the second accommodation cavity 1012b, and the first top plate 1001d of the fourth accommodation cavity 1012d is arranged adjacent to the first bottom plate 1001b of the third accommodation cavity 1012c. For example, the first top plate 1001d of the second accommodation cavity 1012b is connected to the first bottom plate 1001b of the first accommodation cavity 1012a, the first top plate 1001d of the third accommodation cavity 1012c is connected to the first bottom plate 1001b of the second accommodation cavity 1012b, and the first top plate 1001d of the fourth accommodation cavity 1012d is connected to the first bottom plate 1001b of the third accommodation cavity 1012c.

[0133] Alternatively, the interface part 1001 of the adjacent accommodation cavities 10120 can also share a top plate or a bottom plate. For example, the second accommodation cavity 1012b and the first accommodation cavity 1012a share the first bottom plate 1001b of the first accommodation cavity 1012a, the third accommodation cavity 1012c and the second accommodation cavity 1012b share the first bottom plate 1001b of the second accommodation cavity 1012b, and the fourth accommodation cavity 1012d and the third accommodation cavity 1012c share the first bottom plate 1001b of the third accommodation cavity 1012c.

[0134] The optical module shielding cover provided by the embodiments of the present application can include multiple accommodation cavities, thereby saving space.

[0135] Correspondingly, the panel 102 connected to the optical module shielding cover is shown in FIG. 14. The panel 102 is provided with multiple third ventilation holes 1022, multiple mounting holes 1021, and multiple fourth ventilation holes 1024. The multiple mounting holes 1021 are arranged along a first direction (z direction), and the third ventilation holes 1022 are arranged on both sides of the row of mounting holes 1021 along a second direction (x direction).

[0136] In some embodiments, the multiple mounting holes 1021 include multiple mounting hole groups 1020, each mounting hole group 1020 corresponding to an optical module shielding cover 1012 as shown in FIG. 13 or FIG. 15. In each optical module shielding cover 1012, the accommodation cavities 10120 correspond one-to-one to the mounting holes 1021 in each mounting hole group 1020.

[0137] As shown in FIG. 14, the adjacent mounting hole groups 1020 are spaced apart, and each mounting hole group 1020 includes a plurality of mounting holes 1021, and the mounting holes 1021 in the mounting hole group 1020 are adjacently arranged.

[0138] The fourth vent hole 1024 is arranged between the adjacent mounting hole groups 1020.

[0139] The panel provided by the embodiment of the present application not only has the third vent hole 1022 on both sides of the mounting hole 1021, but also has the fourth vent hole 1024 between the adjacent mounting hole groups 1020, so that the number of vent holes on the panel is larger, the opening rate of the panel is further improved, and the heat dissipation performance is improved.

[0140] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A shielding cover for an optical module (1012), characterized in that, It includes at least one accommodating cavity (10120) for accommodating an optical module (1011). Each accommodating cavity (10120) includes an interface portion (1001), a connecting portion (1005), and a cage portion (1002) connected to each other. The longitudinal cross-sectional dimension of the interface portion (1001) is larger than that of the cage portion (1002). The interface portion (1001) is connected to the cage portion (1002) through the connecting portion (1005). The interface portion (1001) is used to connect to a panel (102). The interface portion (1001) includes a first side plate (1001a), a bottom plate (1001b), and a second side plate (1001c) connected in sequence. The first side plate (1001a) and the second side plate (1001c) are opposite to each other.

2. The optical module shielding cover (1012) according to claim 1, characterized in that, The shape of the first side plate (1001a) includes a right triangle.

3. The optical module shielding cover (1012) according to claim 1 or 2, characterized in that, The connecting part (1005) includes: a first connecting plate (1005a) and a second connecting plate (1005c). The cage part (1002) is connected to the first side plate (1001a) through the first connecting plate (1005a) and the second side plate (1001c) through the second connecting plate (1005c).

4. The optical module shielding cover (1012) according to claim 3, characterized in that, The included angle between the first connecting plate (1005a) and the first side plate (1001a) is greater than 0° and less than 90° or greater than 90° and less than 180°.

5. The optical module shielding cover (1012) according to any one of claims 1-4, characterized in that, The interface section (1001) further includes a top plate (1001d), the first side plate (1001a) and the second side plate (1001c) are both connected to the top plate (1001d), and the top plate (1001d) and the bottom plate (1001b) are opposite to each other. The length of the top plate (1001d) along the axis of the optical module shield (1012) is different from the length of the bottom plate (1001b) along the axis of the optical module shield (1012).

6. The optical module shielding cover (1012) according to claim 5, characterized in that, The shape of the first side plate (1001a) includes: a right trapezoid.

7. The optical module shielding cover (1012) according to claim 5 or 6, characterized in that, The connecting part (1005) further includes: a third connecting plate (1005b) and a fourth connecting plate (1005d). The cage part (1002) is connected to the top plate (1001d) through the third connecting plate (1005b), and the cage part (1002) is connected to the bottom plate (1001b) through the fourth connecting plate (1005d).

8. The optical module shielding cover (1012) according to any one of claims 1-7, characterized in that, The connecting part (1005) is provided with a plurality of first ventilation holes (1023).

9. The optical module shielding cover (1012) according to any one of claims 1-8, characterized in that, There are multiple accommodating cavities (10120), and adjacent accommodating cavities (10120) are connected.

10. The optical module shielding cover (1012) according to any one of claims 1-9, characterized in that, The interface portion (1001) includes a plurality of overlapping portions (1000), which are arranged circumferentially along the outer wall of the interface portion (1001).

11. The optical module shielding cover (1012) according to claim 10, characterized in that, The overlapping portion (1000) includes an elastic portion (11), which includes a first end (111) and a second end (112) opposite to each other. The first end (111) is connected to the outer wall of the interface portion (1001), and the second end (112) is a free end.

12. The optical module shielding cover (1012) according to claim 11, characterized in that, The angle between the elastic part (11) and the outer wall of the interface part (1001) is greater than 0° and less than 90°.

13. The optical module shielding cover (1012) according to claim 11 or 12, characterized in that, The elastic part (11) further includes a bending part (113), which is located between the first end (111) and the second end (112).

14. The optical module shielding cover (1012) according to any one of claims 1-13, characterized in that, The interface section (1001) is provided with a plurality of second ventilation holes (1025).

15. An optical module assembly (101), characterized in that, It includes an optical module (1011) and an optical module shielding cover (1012) as described in any one of claims 1-14, wherein the optical module (1011) is disposed in the optical module shielding cover (1012).

16. A service board (100), characterized in that, include: The panel (102), circuit board (104), chip (103), and optical module assembly (101) as claimed in claim 15, wherein the panel (102) is connected to the circuit board (104), the chip (103) is disposed on the circuit board (104), the panel (102) is provided with a plurality of mounting holes (1021), the mounting holes (1021) are used to insert the optical module assembly (101), and the plurality of mounting holes (1021) are arranged along a first direction.

17. The service board (100) according to claim 16, characterized in that, The panel (102) is formed by sheet metal process.

18. The service board (100) according to claim 16 or 17, characterized in that, The panel (102) is provided with a plurality of third ventilation holes (1022), which are arranged on both sides of the mounting hole (1021) along the second direction.

19. The service board (100) according to claim 18, characterized in that, The first direction and the second direction are perpendicular.

20. The service board (100) according to any one of claims 16-19, characterized in that, The plurality of mounting holes (1021) includes: a plurality of mounting hole groups (1020), each of the mounting hole groups (1020) including a plurality of mounting holes (1021), and adjacent mounting hole groups (1020) are spaced apart.

21. The service board (100) according to claim 20, characterized in that, The panel (102) is provided with a plurality of fourth ventilation holes (1024), which are arranged between adjacent mounting hole groups (1020).

22. A communication device, characterized in that, Includes a cabinet (110) and a service board (100) as described in any one of claims 16-21, wherein the cabinet (110) has a slot and the service board (100) is inserted into the slot.

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