Optical module and communication equipment
By installing multiple grooves extending in the plug-in direction on the upper shell flat cover of the OSFP optical module, the problem of difficulty in dissipating heat under the dimensions of the optical module in the thickness direction is solved, and a more efficient heat dissipation effect is achieved.
Patent Information
- Application Number
- CN202311540170.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-17
- Publication Date
- 2025-05-20
AI Technical Summary
The OSFP optical module has limitations on the upper case size in the thickness direction, making it difficult to add heat dissipation teeth to improve heat dissipation efficiency.
By providing a plurality of grooves extending in the plug-in direction on the flat cover plate of the upper case facing away from the base surface, the heat dissipation area of the upper case is increased and the heat dissipation efficiency is improved.
Without increasing the thickness direction of the upper shell, the heat dissipation efficiency at the upper shell of the optical module is effectively improved and the performance of thermal design is enhanced.
Smart Images
Figure CN120020623A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of communication technologies, and particularly to an optical module and a communication device. Background Art
[0002] The current optical communication products on the market are divided into two categories: active and passive. Passive products are merely used as a medium for optical transmission. They can only perform optical splitting or synthesis by using the reflection, refraction, etc. of light. Normally, there is always loss in the optical signal during this transmission process. To reduce this loss, active optical products add electronic devices to convert light into an electrical signal, amplify it, and then convert the electrical signal back into an optical signal to ensure the integrity of signal transmission during long-distance transmission. Therefore, a hot-pluggable optical module is essential in the field of optical communication. As a typical representative of high-speed and high-power active optical module products on the current market, the thermal design of the OSFP package module is extremely important.
[0003] According to the OSFP package adaptation protocol, the heat dissipation method of the OSFP optical module mainly uses a heat dissipation tooth design on the base for heat dissipation. However, the upper shell of the OSFP optical module is usually flat, and due to certain restrictions on the size of the upper shell in the thickness direction of the OSFP optical module, it is difficult to attach heat dissipation teeth for heat dissipation. Summary of the Invention
[0004] The present invention discloses an optical module for improving the heat dissipation efficiency at the upper shell without increasing the size in the thickness direction of the upper shell.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] In a first aspect, there is provided an optical module, including: a circuit board, an upper shell, and a base. The edge of the upper shell is connected to the edge of the base to enclose an accommodation space. The circuit board is located in the accommodation space and is used to carry relevant functional devices. The upper shell has a flat cover plate disposed opposite to the base. The surface of the flat cover plate facing away from the base is provided with a plurality of grooves extending along the insertion direction. In this structure, no heat dissipation teeth are added to the flat cover plate. Within the original thickness range of the cover plate, by providing a plurality of grooves extending along the insertion direction on the surface of the flat cover plate facing away from the base, the heat dissipation area of the upper shell is increased, and the heat dissipation efficiency is improved.
[0007] Optionally, a ventilation hole communicating with at least a part of the grooves is provided at the insertion end of the flat cover plate.
[0008] Optionally, each groove corresponds to and communicates with one ventilation hole.
[0009] Optionally, a conductive rubber strip is clamped between the edge of the upper shell and the edge of the base.
[0010] Optionally, a first rabbet structure is formed at the edge of the upper shell, and a second rabbet structure is formed at the edge of the base. The first rabbet structure and the second rabbet structure are lap-jointed and cooperated with each other;
[0011] Along the arrangement direction of the upper shell and the base, the conductive rubber strip is located between the first rabbet structure and the second rabbet structure.
[0012] Optionally, one of the first rabbet structure and the second rabbet structure is a male rabbet, and the other is a female rabbet. The conductive rubber strip is located at the convex table surface of the male rabbet.
[0013] Optionally, an unlocking component is further included. The unlocking component includes two oppositely arranged arms and a connecting beam connecting the two arms. The arms are respectively arranged on both sides of the base, and the connecting beam is located between the upper shell and the base;
[0014] Wherein, the arrangement direction of the two arms is perpendicular to the arrangement direction of the upper shell and the base.
[0015] Optionally, a first limiting structure is formed on each arm, and a second limiting structure corresponding to the first limiting structure is formed on the base. Each first limiting structure provides a limit within a set distance range for the corresponding second limiting structure in the plugging direction.
[0016] Optionally, the first limiting structure is a clamping hole, and the second limiting structure is a clamping block. In the plugging direction, the size of the clamping hole is larger than the size of the clamping block.
[0017] Optionally, a limiting block integrally connected with the arm is provided at the edge of each clamping hole;
[0018] In the plugging direction, an elastic resetting member is provided between the limiting block and the base. The elastic resetting member is used to provide an elastic resetting force for the corresponding arm in the plugging direction.
[0019] In a second aspect, a communication device is provided. The communication device includes the optical module according to any one of the above technical solutions.
[0020] The communication device and the above optical module have the same advantages over the traditional technology, which will not be elaborated here. Description of the Drawings
[0021] Figure 1 It is an exploded view of the optical module provided by the embodiment of the present application;
[0022] Figure 2a and Figure 2b It represents Figure 1 the assembly drawing of the optical module shown;
[0023] Figure 3a and Figure 3b represent Figure 1 a perspective view of the upper shell 105;
[0024] Figure 4a and Figure 4b represent Figure 1 a perspective view of the base 101;
[0025] Figure 5 represent Figure 1 a schematic structural view of the unlocking component 102;
[0026] Figure 6 represent Figure Figure 1 the cross-sectional view of the optical module shown. Detailed implementation manners
[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0028] The following will be combined with Figure 1 , Figure 2a , Figure 2b , Figure 3a , Figure 3b , Figure 4a , Figure 4b , Figure 5 and Figure 6 to introduce the optical module provided in the embodiments of the present application.
[0029] The optical module provided in the embodiments of the present application includes: a circuit board 104, an upper shell 105 and a base 101. The edge of the upper shell 105 is connected to the edge of the base 101 to enclose an accommodation space S. The circuit board 104 is located in the accommodation space S and is used to carry relevant functional devices. The upper shell 105 has a flat cover plate 400 disposed opposite to the base 101, and a plurality of grooves T extending along the insertion direction W are provided on the surface of the flat cover plate 400 facing away from the base 101. In this structure, no heat dissipation teeth are added to the flat cover plate 400. Within the original thickness range of the cover plate 400, by providing a plurality of grooves T extending along the insertion direction W on the surface of the flat cover plate 400 facing away from the base 101, the heat dissipation area of the upper shell 105 is increased, and the heat dissipation efficiency is improved.
[0030] In a specific embodiment, the insertion end A of the flat cover plate 400 is provided with ventilation holes 402 that communicate with at least a part of the grooves T. One end of the circuit board 104 in the insertion direction W is provided with a gold finger. The insertion end A refers to the end of the flat cover plate 400 close to the gold finger of the circuit board 104. The outside air flow passes through the corresponding ventilation holes 402 after flowing through the grooves T, introducing the outside air flow into other components inside the communication device, providing an auxiliary function for the air change in the entire internal space of the communication device and strengthening the air change effect. At the same time of air change, the heat of the upper shell 105 can be further carried away by the air flow, improving the heat exchange efficiency.
[0031] In a specific embodiment, referring to Figure 3a , each groove T corresponds to and communicates with a ventilation hole 402, making full use of each groove T. While increasing the heat exchange area, the grooves T can also be used to form ventilation channels. Moreover, each groove T has a corresponding ventilation hole 402 communicating with it. The outside air flow flows through the ventilation channels formed by each groove T and flows into the internal space of the communication device through the ventilation holes 402 for air change.
[0032] In a specific embodiment, a conductive rubber strip 404 is clamped between the edge of the upper shell 105 and the edge of the base 101. The upper shell 105 and the base 101 can play an electromagnetic shielding role for the components in the accommodation space S. However, since both the upper shell 105 and the base 101 are made of metal hard materials, they cannot be in complete airtight contact, resulting in a discounted electromagnetic shielding effect. By arranging the easily elastically deformable conductive rubber strip 404 between them, the gap between them can be fully closed. The conductive rubber strip 404 also has a conductive function. Thus, the negative effect of the gap between the upper shell 105 and the base 101 on electromagnetic shielding is alleviated, and the electromagnetic shielding effect is improved.
[0033] In a specific embodiment, a first rabbet structure 403 is formed at the edge of the upper shell 105, and a second rabbet structure 201 is formed at the edge of the base 101. The first rabbet structure 403 and the second rabbet structure 201 are lapped and matched to form a bent gap, which can be in a "Z" shape, increasing the difficulty for electromagnetic waves to pass through the gap. Along the arrangement direction of the upper shell 105 and the base 101, the conductive rubber strip 404 is located between the first rabbet structure 403 and the second rabbet structure 201. The shielding effect of the "Z" shape and the conductive rubber strip 404 can further strengthen the electromagnetic shielding between the components in the accommodation space S and the external components.
[0034] In a specific embodiment, in a single rabbet structure, the part protruding from the inner edge of the side wall (with glue added) is called a male rabbet, and the part cut concave from the inner edge of the side wall (with glue removed) is called a female rabbet. One of the first rabbet structure 403 and the second rabbet structure 201 is a male rabbet, and the other is a female rabbet. The conductive rubber strip 404 is located at the protruding table surface of the male rabbet. Referring toFigure 6 In the form of , the conductive rubber strip 404 is intercepted inside by the "Z"-shaped gap, which is not easily affected by the humidity and temperature of the external environment, and is not easy to crack, thus ensuring the stability of electromagnetic shielding. Even if it falls off, it will fall into the accommodation space S, and is not easy to affect other external devices.
[0035] In a specific embodiment, refer to Figure 5 , the optical module also includes an unlocking component 102, which includes two arms 301 arranged opposite to each other and a connecting beam 305 connecting the two arms 301. The arms 301 and the connecting beam 305 can be sheet metal parts. The arms 301 are arranged on both sides of the base 101, specifically on the left and right sides in the width direction. The connecting beam 305 is located between the upper shell 105 and the base 101. The connecting beam 305 can ensure that the movements of the two arms 301 are synchronized, and the connecting beam 305 does not block the upper shell 105 and the base 101, improve the heat dissipation effect, specifically, the circuit board 104 is connected to the plug-in 107 through the optical fiber 108, and a sedimentation tank 203 is provided at the tail of the base 101, and the plug-in 107 is placed in the sedimentation tank 203, and the connecting beam 305 only needs to be placed between the plug-in 107 and the bottom of the sedimentation tank 203, and the space of the above gap is fully utilized to realize the embedding of the connecting beam 305; wherein, the arrangement direction of the two arms 301 is perpendicular to the arrangement direction of the upper shell 105 and the base 101. The unlocking component 102 also includes a plastic pull ring 302 on the arm 301 by injection molding, so as to facilitate the operation of pulling out or inserting. The free end of each support arm 301 away from the connecting beam 305 is formed with an outward unlocking piece 307. When the optical module is inserted into the slot of the optical cage, the spring pieces on the two side arms of the slot of the optical cage will clamp the clamping surface M on the corresponding side of the base 101. When the unlocking component 102 is pulled outward for a certain distance, the outward unlocking piece 307 will push the spring piece to both sides, and the spring piece will be separated from the clamping surface M to achieve unlocking, and the optical module can be pulled out of the slot of the optical cage. However, to ensure that the spring piece does not rebound to the position of clamping the clamping surface M, the distance of pulling out the unlocking component 102 cannot be too far. For this reason, a limit block 306 is provided below the support arm 301 near the unlocking piece 307 (see Figure 5 ), the base 101 is provided with a limit groove 207 extending along the plug-in direction W, and the limit block 306 is inserted into the limit groove 207. In the plug-in direction W, the size of the limit groove 207 is larger than the size of the limit block 306 to ensure that the limit block 306 can slide a certain distance in the limit groove 207, and ensure that when the unlocking component 102 is pulled outward, the shrapnel of the optical cage will not rebound and cause unlocking failure. The limit groove 207 can also prevent the support arm 301 from warping outward. The conductive cloth 206 is set at the position where the second stop structure 201 is interrupted by the optical fiber 108, and the optical fiber 108 passes through the gap of the conductive cloth 206 to prevent electromagnetic leakage and electromagnetic interference.
[0036] In a specific embodiment, a first limiting structure 303 is formed on each support arm 301, and a second limiting structure 202 corresponding to the first limiting structure 303 one by one is formed on the base 101. Each first limiting structure 303 provides limiting within a set distance range for the corresponding second limiting structure 202 in the insertion direction W, which can further provide guidance and limiting for the support arm 301 and improve stability. This is very important for a hot-pluggable optical module.
[0037] In a specific embodiment, the first limiting structure 303 is a card hole, and the second limiting structure is a card block. In the insertion direction W, the size of the card hole is larger than that of the card block. When assembly is required, only the distance between the two support arms 301 needs to be widened to align the card block with the corresponding card hole. After releasing the hand, the card block enters the corresponding card hole. The structure of the cooperation between the card block and the card hole is simple and easy to process, and can provide stable limiting in the insertion direction W.
[0038] In a specific embodiment, a limiting block 304 integrally connected to the support arm 301 is provided at the edge of each card hole. When forming the card hole by punching, the punched sheet metal structure can be bent inward and pushed out, achieving two purposes at once, and forming the card hole and the limiting block 304 simultaneously. In the insertion direction W, an elastic resetting member 103 is provided between the limiting block 304 and the base 101. The elastic resetting member 103 is used to provide an elastic resetting force for the corresponding support arm 301 along the insertion direction W. Specifically, an inverted buckle groove 204 can be formed on the base 101, and the elastic resetting member 103 can be a spring. The spring elastically supports between the wall surface of the inverted buckle groove 204 and the limiting block 304 along the insertion direction W, so that when the unlocking assembly 102 is pulled out a certain distance, the unlocking assembly 102 can automatically reset under the action of the elastic resetting member 103.
[0039] In addition, heat dissipation teeth 205 are provided on the surface of the base 101 facing away from the upper shell 102. The heat dissipation teeth 205 are additional structures on the surface of the upper shell 102, rather than structures formed by digging down the above-mentioned surface of the upper shell 102. A through hole 107 is provided at the insertion end A of the base 101, and air flows through the channels between the heat dissipation teeth 205 and the through hole 107 into the communication device for ventilation and heat dissipation.
[0040] Based on the same inventive concept, an embodiment of the present application further provides a communication device, and the communication device includes the optical module provided in the above embodiment. The beneficial effects of the communication device can refer to the description of the effects of the optical module above.
[0041] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.
Claims
1. An optical module, characterized in that: include: A circuit board, an upper shell and a base, wherein the edge of the upper shell and the edge of the base are connected to enclose a receiving space, and the circuit board is located in the receiving space; The upper shell has a flat cover plate arranged opposite to the base, and a surface of the flat cover plate facing away from the base is provided with a plurality of grooves extending along the plugging direction.
2. The optical module according to claim 1, characterized in that: The plug-in end of the flat cover plate is provided with a ventilation hole which is in communication with at least part of the groove.
3. The optical module according to claim 2, characterized in that: Each of the grooves is connected to a corresponding ventilation hole.
4. The optical module according to claim 1, characterized in that: A conductive rubber strip is sandwiched between the edge of the upper shell and the edge of the base.
5. The optical module according to claim 4, characterized in that: The edge of the upper shell is formed with a first stop structure, the edge of the base is formed with a second stop structure, and the first stop structure overlaps with the second stop structure; Along the arrangement direction of the upper shell and the base, the conductive rubber strip is located between the first stop structure and the second stop structure.
6. The optical module according to claim 5, characterized in that: One of the first stop structure and the second stop structure is a male stop, and the other is a female stop. The conductive rubber strip is located at the protruding surface of the male stop.
7. The optical module according to claim 1, characterized in that: It also includes an unlocking assembly, the unlocking assembly includes two supporting arms arranged opposite to each other and a connecting beam connecting the two supporting arms, the supporting arms are arranged on both sides of the base, and the connecting beam is located between the upper shell and the base; Wherein, the arrangement direction of the two supporting arms is perpendicular to the arrangement direction of the upper shell and the base.
8. The optical module according to claim 7, characterized in that: A first limiting structure is formed on each of the arms, and a second limiting structure corresponding to the first limiting structure is formed on the base. Each of the first limiting structures provides a limiting function within a set distance range for the corresponding second limiting structure in the plug-in direction.
9. The optical module according to claim 8, characterized in that: The first limiting structure is a locking hole, and the second limiting structure is a locking block. In the plugging direction, the size of the locking hole is larger than the size of the locking block.
10. The optical module according to claim 8, characterized in that: Each of the clamping holes has a limit block integrally connected to the support arm at its edge; In the plugging direction, an elastic reset member is provided between the limit block and the base, and the elastic reset member is used to provide an elastic reset force along the plugging direction for the corresponding support arm.
11. A communication device, characterized in that: The optical module comprises the optical module according to any one of claims 1 to 10.