Heat sink assembly for optical module

Abstract

The utility model provides a radiator assembly used for an optical module. The radiator assembly comprises a cage, a radiator and a metal snapping line. The cage body is provided with a containing space, an opening is formed in one side face of the cage body, the first fixing buckle and the second fixing buckle are fixed to the top face of the cage body, and the through groove penetrates through the top face of the cage body. The through groove is communicated with the containing space, and the first fixing buckle and the second fixing buckle are located on the two opposite sides of the through groove respectively. The accommodating space is used for accommodating and fixing the optical module, and at least part of one side, close to the cage, of the radiator extends into the through groove and is used for abutting against the optical module accommodated in the accommodating space; the metal snapping line is pressed on the radiator, one end of the metal snapping line is hinged to the first fixing buckle, and the other end of the metal snapping line is connected with the second fixing buckle in a clamped mode so that the radiator can be detachably fixed to the cage. The heat radiator assembly for the optical module can improve the fixing effect of the heat radiator and the heat radiation performance of the optical module.

Description

Technical Field

[0001] The utility model relates to the technical field of optical module heat dissipation, in particular to a radiator assembly for an optical module. Background Art

[0002] With the rapid development of AI, the data traffic processed by data centers has increased significantly. Both servers and switches require more and higher-speed optical modules for data conversion and transmission. The transmission rate of optical modules has also rapidly increased from the early 10G to 400G and 800G. This has led to a significant increase in optical module power consumption, from approximately 1W to nearly 30W. Heat dissipation in optical modules faces increasing challenges and has become a key challenge in cooling solutions for servers and switches.

[0003] In the early days, optical modules relied solely on their metal casings, working in conjunction with the system fans within servers or switches, to dissipate heat. As optical module power consumption increased, manufacturers began designing heat sinks to dissipate heat. Currently, heat sink fixtures typically use metal springs to hold the heat sink in place. These springs integrate with the optical module cage through metal buckles, securing the heat sink above the optical module cage. When the optical module is inserted into the cage, the heat sink is squeezed upward, deforming the metal springs and generating pressure that allows the heat sink to contact the optical module's metal casing. Heat generated during operation is released into the surrounding environment through the heat sink, which is in contact with the optical module's metal casing, thus dissipating heat from the optical module.

[0004] However, the metal shrapnel is integrated with the optical module cage through metal buckles and cannot be removed after installation. At the same time, when the optical module is plugged in or out, the optical module rubs against the bottom of the heat sink, which can easily damage the optical module and result in poor reliability. Utility Model Content

[0005] In view of the above deficiencies in the prior art, the present invention proposes a heat sink assembly for an optical module to solve the problems of the existing heat sink of the optical module being difficult to assemble and disassemble and having poor heat dissipation effect.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An embodiment of the present utility model provides a heat sink assembly for an optical module, comprising: a cage, a heat sink abutting one side of the cage, and a metal elastic wire fixing the heat sink to the cage; the cage comprises a cage body having a receiving space and an opening on one side thereof, a first fixing buckle and a second fixing buckle respectively fixed to the top surface of the cage body, and a through slot running through the top surface of the cage body; the through slot is communicated with the receiving space, and the first fixing buckle and the second fixing buckle are respectively located on opposite sides of the through slot; the receiving space is used to receive and fix the optical module, and a side of the heat sink close to the cage at least partially extends into the through slot for abutting against the optical module received in the receiving space; the metal elastic wire is pressed onto the heat sink, and one end of the metal elastic wire is hinged to the first fixing buckle, and the other end of the metal elastic wire is engaged with the second fixing buckle, so that the heat sink can be detachably fixed to the cage.

[0008] Preferably, the metal elastic wire includes an elastic wire body, a hinged portion and a snap portion formed by bending the two ends of the elastic wire body respectively, and an arc-shaped elastic portion protruding from the middle position of the elastic wire body to the side close to the cage; the hinged portion is hinged to the first fixing buckle, the snap portion is snapped to the second fixing buckle, and the elastic portion presses the radiator so that it is abutted and fixed to the cage.

[0009] Preferably, the buckle portion is an arc-shaped structure.

[0010] Preferably, the hinge portion is a circular structure.

[0011] Preferably, the radiator includes a radiator body and a thermal grease layer coated on the side of the radiator body close to the cage, the radiator body is attached to the cage and covers the through groove, and the thermal grease layer extends into the through groove for abutting against the optical module.

[0012] Preferably, the radiator body includes a base plate, a boss formed by protruding from a side of the base plate close to the cage, and a plurality of fins arranged on a side of the base plate away from the cage, the base plate is attached to the cage, the boss extends into the through groove, the thermal grease layer is coated on a side of the boss away from the base plate, and the metal elastic wire is clamped between two adjacent fins and abuts against the base plate.

[0013] Preferably, the plurality of fins are evenly arranged.

[0014] Preferably, the through groove is a rectangular structure.

[0015] Preferably, the metal elastic wire is made of SUS304 stainless steel.

[0016] Preferably, the diameter of the metal elastic wire is 1 mm-1.5 mm.

[0017] Compared with the related art, in an embodiment of the present invention, the optical module is placed in the receiving space of the cage; the cage includes a cage body having a receiving space and an opening on one side thereof, a first fixing buckle and a second fixing buckle respectively fixed to the top surface of the cage body, and a through groove running through the top surface of the cage body; the through groove is connected to the receiving space, and the first fixing buckle and the second fixing buckle are respectively located on opposite sides of the through groove; the receiving space is used to receive and fix the optical module, and a side of the heat sink close to the cage at least partially extends into the through groove, for abutting against the optical module received in the receiving space; a metal elastic wire is pressed onto the heat sink, and one end of the metal elastic wire is hinged to the first fixing buckle, and the other end of the metal elastic wire is clamped to the second fixing buckle, so that the heat sink can be detachably fixed to the cage; using the metal elastic wire to fix the heat sink can realize flexible disassembly of the heat sink; at the same time, it can also generate greater pressure, reduce contact thermal resistance, and improve heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be described in detail below with reference to the accompanying drawings. The above and other aspects of the present invention will become clearer and easier to understand through the detailed description made with reference to the following drawings.

[0019] Figure 1 A schematic structural diagram of a heat sink assembly for an optical module provided in an embodiment of the present utility model;

[0020] Figure 2 A schematic diagram of the structure of pressing the metal elastic wire downward in the heat sink assembly for the optical module provided by an embodiment of the present utility model;

[0021] Figure 3 A schematic structural diagram of a heat sink for a heat sink assembly of an optical module provided in an embodiment of the present utility model;

[0022] Figure 4 A schematic diagram of the state of inserting the optical module into the heat sink assembly for the optical module provided by the embodiment of the utility model Figure 1 ;

[0023] Figure 5 A schematic diagram of the state of inserting the optical module into the heat sink assembly for the optical module provided by the embodiment of the utility model Figure 2 ;

[0024] Figure 6 A schematic diagram of the process of removing the optical module from the heat sink assembly provided by the present invention. Figure 1 ;

[0025] Figure 7 A schematic diagram of the process of removing and disassembling the optical module from the heat sink assembly provided by the present invention. Figure 2 .

[0026] Among them, 100, a heat sink assembly for an optical module, 1, a cage, 11, a cage body, 12, a first fixing buckle, 13, a second fixing buckle, 14, a through groove, 2, a heat sink, 21, a heat sink body, 211, a bottom plate, 212, a boss, 213, a fin, 22, a thermal grease layer, 3, a metal elastic wire, 31, an elastic wire body, 32, a hinge part, 33, a snap part, 34, an elastic part, 4, an optical module. DETAILED DESCRIPTION

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0028] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 3As shown, an embodiment of the present invention provides a heat sink assembly 100 for an optical module, comprising: a cage 1 for placing an optical module 4, a heat sink 2 abutting against one side of the cage 1, and a metal elastic wire 3 fixing the heat sink 2 to the cage 1; the cage 1 comprises a cage body 11 having a receiving space and an opening on one side thereof, a first fixing buckle 12 and a second fixing buckle 13 respectively fixed to the top surface of the cage body 11, and a through slot 14 passing through the top surface of the cage body 11; the through slot is connected to the receiving space, The first fixing buckle and the second fixing buckle are respectively located on opposite sides of the through slot; the receiving space is used to accommodate and fix the optical module, and the side of the heat sink 2 close to the cage 1 at least partially extends into the through slot 14, and is used to abut against the optical module 4 accommodated in the receiving space; the metal elastic wire 3 is pressed on the heat sink 2, and one end of the metal elastic wire 3 is hinged to the first fixing buckle 12, and the other end of the metal elastic wire 3 is clamped to the second fixing buckle 13, so that the heat sink 2 can be detachably fixed to the cage 1.

[0031] Specifically, the optical module 4 is inserted into the cage body 11 so that the optical module 4 is clamped and fixed on the inner side of the cage body 11, the heat sink 2 is set in the through slot 14 so that the heat sink 2 is in contact with the optical module 4, the other end of the metal elastic wire 3 is pressed against the heat sink 2 so that the heat sink 2 is set against the optical module 4, and the other end of the metal elastic wire 3 is buckled onto the second fixing buckle 13 to fix the heat sink 2. When the optical module 4 needs to be replaced, the heat sink 2 is first pulled out of the through slot 14 by opening the other end of the metal elastic wire 3 from the second fixing buckle 13, and then the optical module 4 is pulled out of the cage 1 to remove the optical module 4. Using the metal elastic wire 3 to fix the heat sink 2 can achieve flexible disassembly of the heat sink 2; at the same time, it can also generate greater pressure, reduce contact thermal resistance, and improve heat dissipation.

[0032] Optionally, the cage 1 is made of metal, the optical module 4 is inserted into the cage 1, and the upper and lower sides of the optical module 4 are isolated from the interior of the cage 1. By inserting the radiator 2 into the through groove 14 and contacting the optical module 4, the optical module 4 can quickly diffuse the heat through the radiator 2, and the heat dissipation effect of the optical module 4 is good.

[0033] In this embodiment, the first fixing buckle 12 and the second fixing buckle 13 are fixed to the cage 1 by riveting or welding, which facilitates the installation of the metal elastic wire 3.

[0034] In this embodiment, the metal elastic wire 3 includes an elastic wire body 31, a hinged portion 32 and a snap portion 33 formed by bending the two ends of the elastic wire body 31, and an arc-shaped elastic portion 34 protruding from the middle position of the elastic wire body 31 toward the side closer to the cage 1. The hinged portion 32 is hinged to the first fixing buckle 12, the snap portion 33 is snapped to the second fixing buckle 13, and the elastic portion 34 presses the heat sink 2 against the cage 1 to fix it. This ensures that the heat sink 2 is well fixed to the cage 1, and the heat sink 2 has a better heat dissipation effect on the optical module 4.

[0035] In this embodiment, the buckle portion 33 is an arc-shaped structure. The hinge portion 32 is an arc-shaped structure. By using a circular buckle at one end of the metal elastic wire 3 and inserting it into the first fixing buckle 12 on the cage 1, the metal elastic wire 3 and the cage 1 become one, making it difficult to lose.

[0036] In this embodiment, the hinge portion 32 is a circular structure, which facilitates adjusting the snapping pressure between the heat sink 2 and the optical module 4 by changing the height of the contact point on the metal elastic wire 3 that contacts the heat sink 2, resulting in a good fixing effect.

[0037] Specifically, the hinge of the metal elastic wire 3 is inserted into the first fixing buckle 12 on one side of the cage 1 through a circular buckle. When the arc-shaped buckle portion 33 is buckled into the second fixing buckle 13 of the cage 1, the contact point of the elastic portion 34 contacts the radiator 2, causing the metal elastic wire 3 to deform and generate downward pressure, thereby fixing the radiator 2 and ensuring that the radiator 2 is in close contact with the cage 1.

[0038] In this embodiment, the radiator 2 includes a radiator body 21 and a thermal grease layer 22 coated on the side of the radiator body 21 close to the cage 1. The radiator body 21 is attached to the cage 1 and covers the through groove 14. The thermal grease layer 22 extends into the through groove 14 and is used to abut against the optical module 4.

[0039] In this embodiment, the heat sink body 21 includes a base plate 211, a boss 212 formed by protruding from a side of the base plate 211 close to the cage 1, and a plurality of fins 213 arranged on a side of the base plate 211 away from the cage 1. The base plate 211 is attached to the cage 1, and the boss 212 extends into the through groove 14. The thermal grease layer 22 is applied to the side of the boss 212 away from the base plate 211. The metal elastic wire 3 is sandwiched between two adjacent fins 213 and abuts the base plate 211. By pre-applying the thermal grease layer 22 to the boss 212 of the base plate 211 of the heat sink 2, when the heat sink 2 is fixed by the metal elastic wire 3, the heat sink 2 and the optical module 4 are in close contact, so that the thermal grease layer 22 is interposed between the two, thereby reducing the contact thermal resistance between the two.

[0040] In this embodiment, the size of the boss 212 at the bottom of the radiator 2 needs to be slightly smaller than the size of the through slot 14 of the cage 1. The through slot 14 of the cage 1 is used to limit the radiator 2, thereby protecting the thermal grease layer 22 of the radiator 2.

[0041] In this embodiment, the plurality of fins 213 are evenly arranged.

[0042] In this embodiment, the through slot 14 is a rectangular structure.

[0043] In this embodiment, the metal elastic wire 3 is made of SUS304 stainless steel.

[0044] In this embodiment, the diameter of the metal elastic wire 3 is 1 mm to 1.5 mm, which is a moderate size and saves costs.

[0045] The working principle of the present invention is specifically divided into two application scenarios: insertion and removal of the optical module 4 .

[0046] See also Figure 4-Figure 5 As shown, when it is necessary to insert the optical module 4, the specific implementation steps are as follows:

[0047] Step 1: Insert the optical module 4 into the cage 1 so that the optical module 4 is connected to the connector in the cage 1. At this time, the heat sink 2 is not installed in the cage 1 of the optical module 4.

[0048] Step 2: Unfasten the metal elastic wire 3 that was previously buckled into the second fixing buckle 13 on the top of the cage 1. One end of the metal elastic wire 3 is inserted into the first fixing buckle 12 through the circular buckle to ensure that the metal elastic wire 3 will not be lost during use. The other end of the metal elastic wire 3 is released from the second fixing buckle 13 on the cage 1.

[0049] Step 3: Place the heat sink 2 vertically in the slot 14 (open area) at the top of the cage 1, directly contacting the top of the optical module 4 in the cage 1. The boss 212 at the center of the bottom plate 211 of the heat sink 2 contacts the metal housing of the optical module 4. The boss 212 is slightly smaller than the open area of the cage 1. The open area of the cage 1 limits the position of the heat sink 2, ensuring that the heat sink 2 does not move significantly and damage the thermal grease layer 22 at the bottom of the heat sink 2.

[0050] Step 4: Buckle the buckle portion 33 of the metal elastic wire 3 into the second fixing buckle 13 on the cage 1. During this process, the elastic portion 34 contacts the heat sink 2, and the metal elastic wire 3 deforms, generating pressure on the heat sink 2, thereby achieving close contact between the heat sink 2 and the optical module 4.

[0051] See also Figure 6-Figure 7 As shown, when it is necessary to remove the optical module 4, the specific implementation steps are as follows:

[0052] Step 21: Release the buckle portion 33 of the metal elastic wire 3 from the second fixing buckle 13 of the cage 1 to release the pressure applied to the radiator 2;

[0053] Step 22: Pull out the radiator 2 vertically upwards;

[0054] Step 23: Pull out the optical module 4 from the cage 1; wipe off the thermal grease layer 22 on the contact surfaces of the optical module 4 and the heat sink 2, and use a jig to apply a new thermal grease layer 22 on the boss 212 of the bottom plate 211 for use when the optical module 4 is inserted next time.

[0055] Specifically, by performing the above steps to plug and unplug the optical module 4 , a thermal grease layer 22 can be filled between the optical module 4 and the heat sink 2 , thereby improving the heat dissipation of the optical module 4 .

[0056] It should be noted that the various embodiments described above with reference to the accompanying drawings are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Those skilled in the art should understand that any modifications or equivalent substitutions to the present invention that do not depart from the spirit and scope of the present invention are intended to be encompassed within the scope of the present invention. Furthermore, unless the context otherwise requires, words appearing in the singular include the plural form, and vice versa. Furthermore, unless otherwise specified, all or part of any embodiment may be used in combination with all or part of any other embodiment.

Claims

1. A heat sink assembly for an optical module, characterized in that: include: A cage, a heat sink abutting one side of the cage, and a metal elastic wire fixing the heat sink to the cage; the cage includes a cage body having a receiving space and an opening on one side thereof, a first fixing buckle and a second fixing buckle respectively fixed to the top surface of the cage body, and a through slot passing through the top surface of the cage body; the through slot is communicated with the receiving space, and the first fixing buckle and the second fixing buckle are respectively located on opposite sides of the through slot; the receiving space is used to accommodate and fix the optical module, and the side of the heat sink close to the cage at least partially extends into the through slot for abutting against the optical module accommodated in the receiving space; the metal elastic wire is pressed onto the heat sink, and one end of the metal elastic wire is hinged to the first fixing buckle, and the other end of the metal elastic wire is engaged with the second fixing buckle, so that the heat sink can be detachably fixed to the cage.

2. The heat sink assembly for an optical module according to claim 1, wherein: The metal elastic wire includes an elastic wire body, a hinged portion and a snap portion formed by bending the two ends of the elastic wire body respectively, and an arc-shaped elastic portion protruding from the middle position of the elastic wire body to the side close to the cage; the hinged portion is hinged to the first fixing buckle, the snap portion is snapped to the second fixing buckle, and the elastic portion presses the radiator so that it is abutted and fixed to the cage.

3. The heat sink assembly for an optical module according to claim 2, wherein: The buckle portion is an arc-shaped structure.

4. The heat sink assembly for an optical module according to claim 2, wherein: The hinged portion is a circular structure.

5. The heat sink assembly for an optical module according to claim 1, wherein: The heat sink includes a heat sink body and a thermal grease layer coated on a side of the heat sink body close to the cage. The heat sink body is attached to the cage and covers the through slot. The thermal grease layer extends into the through slot for contacting the optical module.

6. The heat sink assembly for an optical module according to claim 5, wherein: The radiator body includes a base plate, a boss formed by protruding from a side of the base plate close to the cage, and a plurality of fins arranged on a side of the base plate away from the cage. The base plate is attached to the cage, the boss extends into the through groove, the thermal grease layer is applied to the side of the boss away from the base plate, and the metal elastic wire is clamped between two adjacent fins and abuts against the base plate.

7. The heat sink assembly for an optical module according to claim 6, wherein: The plurality of fins are evenly arranged.

8. The heat sink assembly for an optical module according to claim 1, wherein: The through slot is a rectangular structure.

9. The heat sink assembly for an optical module according to claim 1, wherein: The metal elastic wire is made of SUS304 stainless steel.

10. The heat sink assembly for an optical module according to claim 1, wherein: The diameter of the metal elastic wire is 1mm-1.5mm.

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