Connector components

Abstract

The present invention provides a connector assembly. The connector assembly includes a guide shielding cover and a heat sink. The guide shielding cover has a housing space, a socket connected to the housing space and located at the front end, and a wall constituting the housing space, the wall being formed with a window connected to the housing space. The heat sink has a surface arranged on the wall, and a thermal coupling portion protruding from the surface. The thermal coupling portion passes through the window into the housing space and can move relative to the guide shielding cover. The thermal coupling portion includes two side protrusion structures extending from front to back and jointly defining a recess, and a thermal pad arranged in the recess between the two side protrusion structures, each side protrusion structure having a guide slope located at the front end.

Description

Technical Field

[0001] The present invention relates to a connector assembly, in particular to a connector assembly with a heat sink. Background Art

[0002] Chinese invention patent publication number CN111065878 A discloses a connector assembly in which, when a pluggable module is inserted into a housing element of the connector assembly, a sloped portion of the heat sink protects the leading edge of the thermal interface material from engaging the module. Although the slope protects the leading edge of the thermal interface material from engaging the module, once the module passes over the slope, the front end of the heat sink is lifted and the rear end is tilted due to the downward pressure of a spring. As the front end of the module continues to be inserted, it scrapes against the thermal interface material, causing damage to the thermal interface material. Summary of the Invention

[0003] Therefore, one object of the present invention is to provide a connector assembly that can improve at least one problem in the prior art.

[0004] Therefore, in some embodiments of the connector assembly of the present invention, a guide shield and a heat sink are included. The guide shield has a housing space, a socket located at the front end thereof and connected to the housing space, and a wall constituting the housing space, wherein the wall is formed with a window connected to the housing space. The heat sink has a surface disposed on the wall and a thermal coupling portion protruding from the surface. The thermal coupling portion passes through the window into the housing space and is movable relative to the guide shield. The thermal coupling portion includes two side protrusion structures extending from front to back and jointly defining a recess, and a thermal pad disposed in the recess between the two side protrusion structures. Each side protrusion structure has a guide slope located at the front end.

[0005] In some embodiments, each side protrusion structure further has a first step located behind the guide slope and a second step located behind the first step, and the portion of the thermal pad located between the second steps of the two side protrusion structures protrudes more than the second steps of the two side protrusion structures.

[0006] In some embodiments, a protruding height of the first step portion of each side protruding structure relative to the surface of the heat sink is greater than a protruding height of the second step portion relative to the surface of the heat sink.

[0007] In some embodiments, the front section of at least one of the protruding structures is configured as a transversely widened front section.

[0008] In some embodiments, the guiding slopes of the two side protrusion structures are connected to each other to form a guiding structure extending laterally. The thermal coupling portion also has a groove formed in the rear section of the guiding structure and extending laterally, and the front end edge of the thermal pad extends into the groove.

[0009] In some embodiments, the guiding slopes of the two side protrusion structures are connected to each other to form a guiding structure extending laterally. The thermal coupling portion also has a groove formed in the rear section of the guiding structure and extending laterally, and the front end edge of the thermal pad extends into the groove.

[0010] In some embodiments, the guiding slopes of the two side protrusion structures are more protruding than a portion of the thermal pad located between the guiding slopes.

[0011] In some embodiments, the device further includes a socket connector covered by the guide shield, and a pressure elastic member for assembling the heat sink to the wall of the guide shield.

[0012] In some embodiments, the pressure-applying elastic member is an elastic fastener, the heat sink further has a substrate formed with the surface, the pressure-applying elastic member has an elastic pressing portion elastically pressed against the substrate, and an assembly portion extending from the elastic pressing portion and assembled to the guide shielding cover.

[0013] The connector assembly of the present invention can effectively protect the thermal pad and prevent the thermal pad from being scratched by the front edge of a pluggable module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features and effects of the present invention will be more clearly seen in the following embodiments with reference to the accompanying drawings, in which:

[0015] Figure 1 is an exploded perspective view of a first embodiment of a connector assembly and a pluggable module of the present invention;

[0016] Figure 2 is an exploded perspective view of the first embodiment, in which the socket connector and the pluggable module of the first embodiment are omitted;

[0017] Figure 3 is a perspective view of the radiator of the first embodiment;

[0018] Figure 4 is a cross-sectional view of the first embodiment and a pluggable module when docking;

[0019] Figure 5 yes Figure 3 A partially enlarged stereoscopic image of

[0020] Figure 6 is an exploded perspective view of the heat sink of the first embodiment;

[0021] Figure 7 is a perspective view of a heat coupling portion of a heat sink according to a second embodiment of a connector assembly of the present invention, wherein the thermal conductive pad of the heat coupling portion is omitted in the figure;

[0022] Figure 8 is a perspective view of the thermal coupling portion of the heat sink of the second embodiment;

[0023] Figure 9 is a perspective view of a heat coupling portion of a heat sink according to a third embodiment of a connector assembly of the present invention, wherein the thermal conductive pad of the heat coupling portion is omitted in the figure;

[0024] Figure 10 is a perspective view of the heat coupling portion of the heat sink of the third embodiment;

[0025] Figure 11 is a perspective view of a fourth embodiment of a connector assembly of the present invention;

[0026] Figure 12 yes Figure 11 A three-dimensional exploded view

[0027] Figure 13 is a partial perspective view of the guide shield cover of the fourth embodiment, in which one of the two side protrusion pads provided on the guide shield cover is disassembled from the guide shield cover;

[0028] Figure 14 is a partial cross-sectional view of the fourth embodiment, used to illustrate the front convex pad of the guide shield cover of the fourth embodiment; and

[0029] Figure 15 FIG. 4 is a cross-sectional view of the fourth embodiment, used to illustrate the side protrusion pad of the guide shield cover of the fourth embodiment.

[0030] The reference numerals are as follows:

[0031] 100 Connector Assembly

[0032] 1 Guide shield

[0033] 11 Top wall

[0034] 111 Blocking plate

[0035] 112 guide plate

[0036] 12 bottom wall

[0037] 13 Sidewall

[0038] 131 buckle protrusion

[0039] 132 Locking piece

[0040] 14 posterior wall

[0041] 15 pins

[0042] 16 Storage Space

[0043] 161 socket

[0044] 162 Window

[0045] 163 bottom opening

[0046] 17 Grounding piece

[0047] 17' grounding piece

[0048] 170 plate body

[0049] 170a Front convex pad

[0050] 171 Elastic fingers

[0051] 18 Scoliosis Pads

[0052] 2 socket connectors

[0053] 21 base

[0054] 211 socket

[0055] 22 terminals

[0056] 3 Radiator

[0057] 31 substrate

[0058] 311 Bottom

[0059] 312 top surface

[0060] 32 cooling fins

[0061] 33 Thermal coupling unit

[0062] 331 Ontology

[0063] 332 side raised structure

[0064] 332a guide slope

[0065] 332b first guide part

[0066] 332c Second guide part

[0067] 332d first stage

[0068] 332e front width section

[0069] 332f rear narrow section

[0070] 332g second stage

[0071] 333 recess

[0072] 334 thermal pad

[0073] 335 Guidance Structure

[0074] 336 groove

[0075] 34 Avoidance groove

[0076] 4 Pressure elastic member

[0077] 41 elastic pressing portion

[0078] 42 Assembly Department

[0079] 421 buckle hole

[0080] 200 pluggable modules

[0081] 201 Shell

[0082] 201a plug-in unit

[0083] 201b front end

[0084] 201c front groove

[0085] 201d front width

[0086] 201e blocking surface

[0087] 201f guide groove

[0088] 201g lock recess

[0089] 202 plug-in board

[0090] 202a contact finger

[0091] 203 Cable

[0092] D1 front-to-back direction

[0093] D2 Up and down direction

[0094] D3 left and right direction

[0095] H1 protrusion height

[0096] H2 protrusion height DETAILED DESCRIPTION

[0097] Before the present invention is described in detail, it should be noted that similar elements are denoted by the same reference numerals in the following description.

[0098] See Figures 1 to 3A first embodiment of the connector assembly 100 of the present invention is suitable for plugging with a pluggable module 200. The pluggable module 200 includes a housing 201, a plug board 202, and a cable 203. The housing 201 includes a plug portion 201a. The plug board 202 is provided on the plug portion 201a so as to protrude from the plug portion 201a. The plug board 202 has a plurality of contact fingers 202a. The cable 203 is provided in the housing 201 and is mechanically and electrically connected to the plug board 202. The connector assembly 100 includes a guide shield 1, a socket connector 2, a heat sink 3, and two pressure-applying elastic members 4. It should be noted that the number of the guide shield 1, the socket connector 2, the heat sink 3, and the pressure-applying elastic members 4 can be adjusted according to needs and can be stacked or combined, and is not limited to the number in this first embodiment.

[0099] The guide shield 1 is made of metal, for example, and can be formed by stamping and bending a metal plate. The guide shield 1 extends along a front-to-back direction D1 (the arrow indicates the front direction, and the reverse direction indicates the rear direction) and comprises a top wall 11, a bottom wall 12 spaced apart from the top wall 11 along a top-to-bottom direction D2 (the arrow indicates the top direction, and the reverse direction indicates the bottom direction), two side walls 13 spaced apart from each other along a left-to-right direction D3 (the arrow indicates the right direction, and the reverse direction indicates the left direction) and connected to the top wall 11 and the bottom wall 12, respectively, a rear wall 14 at the rear end connected to the top wall 11 and the rear edges of the side walls 13, and a plurality of pins 15 extending downwardly from the side walls 13 and adapted to be secured to a socket (not shown) on a circuit board (not shown) and / or connected to a ground trace. In addition, the guide shield cover 1 also has an accommodating space 16 defined and located inside by the top wall 11, the bottom wall 12, the two side walls 13 and the rear wall 14, a socket 161 located at the front end and connected to the accommodating space 16 for the pluggable module 200 to be inserted, a window 162 formed on the top wall 11 and extending rearward from the front section of the top wall 11 and connected to the accommodating space 16, and a bottom opening 163 located behind the bottom wall 12 and connected to the accommodating space 16.

[0100] The receptacle connector 2 is covered by the guide shield 1 through the bottom opening 163, so that the receptacle connector 2 is located at the rear end of the accommodating space 16, but the present invention is not limited thereto. Furthermore, the receptacle connector 2 is mechanically and electrically mounted on the circuit board. The receptacle connector 2 includes an insulating base 21 and a plurality of terminals 22. The base 21 has a forward-facing insertion slot 211. The plurality of terminals 22 are disposed within the insertion slot 211, and their rear ends (not shown) are electrically and mechanically connected to the circuit board. After the pluggable module 200 enters the guide shield 1 through the socket 161, the plug-in board 202 of the plug-in module 200 with the protruding plug-in portion 201a can be inserted into the plug-in slot 211 of the socket connector 2, so that the contact fingers 202a of the plug-in board 202 contact the terminals 22 in the plug-in slot 211 of the socket connector 2, so that the pluggable module 200 and the socket connector 2 of the connector assembly 100 are docked with each other. In addition, a plurality of grounding members 17 are provided at the socket 161 of the guide shielding cover 1. The grounding member 17 has two plates 170 arranged at the socket 161 and respectively located on the outside and inside of the guide shielding cover 1, and a plurality of elastic fingers 171 extending backward from the two plates 170 located at the socket 161 and distributed on the outside and inside of the guide shielding cover 1. Among the plurality of elastic fingers 171, those located on the outside of the guide shielding cover 1 are used to contact a portion of a casing (not shown) at the periphery of a mounting hole (not shown), and those located on the inside of the guide shielding cover 1 are used to contact the pluggable module 200.

[0101] The heat sink 3 comprises a base plate 31 having a bottom surface 311 and a top surface 312, a plurality of heat dissipation fins 32 extending upward from the top surface 312 of the base plate 31 and arranged side by side along the left-right direction D3, and a thermal coupling portion 33 protruding downward from the bottom surface 311 of the base plate 31. The bottom surface 311 of the base plate 31 is disposed on the top wall 11 of the guide shield 1. The thermal coupling portion 33 extends through the window 162 in the top wall 11 into the accommodating space 16. The entire heat sink 3 and its thermal coupling portion 33 are movable relative to the guide shield 1. It should be noted that although the heat sink 3 is mounted on the top wall 11 in the first embodiment, in other embodiments, the heat sink 3 may also be mounted on the bottom wall 12 having the window 162 formed therein, or two heat sinks 3 may be mounted on the top wall 11 and the bottom wall 12 having the window 162 formed therein, respectively. Furthermore, the heat sink 3 may also be mounted on a partition structure (not shown) that divides the accommodating space 16 of the guide shield 1 into two upper and lower layers. Furthermore, although the thermal coupling portion 33 is directly integrally formed on the base plate 31 in the first embodiment so as to move with the base plate 31, in other embodiments, the thermal coupling portion 33 may also be an independent component that is movably assembled to the base plate 31 relative to the base plate 31, or an independent component that is fixedly assembled to the base plate 31 and moves with the base plate 31.

[0102] In the first embodiment, the two pressure-applying elastic members 4 are elastic clips and are used to assemble the heat sink 3 to the top wall 11 of the guide shield 1. Each pressure-applying elastic member 4 has an elastic pressing portion 41 that elastically presses against the top surface 312 of the base plate 31, and two assembly portions 42 that extend downward from the left and right ends of the elastic pressing portion 41 and are assembled to the guide shield 1. In detail, each side wall 13 of the guide shield 1 on both sides is formed with two snap-fitting protrusions 131, and each assembly portion 42 is formed with a snap-fitting hole 421 that snaps into contact with the corresponding snap-fitting protrusion 131 of the side wall 13. In addition, the heat sink 3 also has two avoidance grooves 34 formed on the plurality of heat dissipation fins 32 and used to avoid the elastic pressing portions 41 of the two pressure-applying elastic members 4. It should be noted that although the number of the elastic pressing parts 41 and the assembly parts 42 of the pressure elastic member 4 is one to two in the first embodiment, in other embodiments, the number of the elastic pressing parts 41 and the assembly parts 42 can also be adjusted to any number according to needs. In addition, the pressure elastic member 4 can also be replaced by other types of pressure elastic members 4 for applying pressure to the radiator 3 instead of an elastic fastener, and is not limited to the first embodiment.

[0103] See Figures 1 to 4When the pluggable module 200 enters the guide shield 1 and docks with the receptacle connector 2 of the connector assembly 100, the top surface of the plug-in portion 201a of the housing 201 of the pluggable module 200 contacts the thermal coupling portion 33 of the heat sink 3, and pushes the thermal coupling portion 33 of the heat sink 3 and the entire heat sink 3 upward (see FIG. Figure 4 ), further, the downward pressing reaction force applied by the pressure elastic member 4 to the heat sink 3 will cause the thermal coupling portion 33 of the heat sink 3 to fit snugly against the top surface of the plug-in portion 201a of the shell 201 of the plug-in module 200, thereby maintaining the contact relationship between the plug-in module 200 and the heat sink 3 to ensure the heat dissipation performance.

[0104] See Figures 1 to 3 and Figures 5 and 6 The thermal coupling portion 33 includes a body 331 protruding downward from the bottom surface 311 of the substrate 31, two side protrusions 332 extending downward from the body 331 and defining a recess 333, and a thermal pad 334 disposed within the recess 333 between the two side protrusions 332. The thermal pad 334 can fully fill gaps or gaps between the contact surfaces to reduce the thermal contact resistance between the contact surfaces. In the first embodiment, the thermal pad 334 is a thermal interface material (TIM). The material can be selected from a combination of materials having high thermal conductivity, high flexibility, compressibility, insulation, and wear resistance. For example, it can be a combination of a base material and a phase change material. For example, it can be a two-layer structure, with the outer base material being a material having thermal conductivity, lubricity, wear resistance, and tear resistance (such as Teflon), while the inner layer is a phase change material. In addition, the thermal pad 334 can also have an electromagnetic wave shielding function (EMI shielding) by changing the combination of materials.

[0105] Each side protrusion structure 332 has a guiding slope 332a at the front end that is inclined and provides a guiding effect, and a first step 332d located behind the guiding slope 332a. In the first embodiment, the guiding slope 332a has a first guiding portion 332b at the front and a second guiding portion 332c at the rear, wherein the first guiding portion 332b is more inclined than the second guiding portion 332c. However, in other embodiments, the guiding slope 332a may not be divided into the first guiding portion 332b and the second guiding portion 332c, or may be divided into three or more guiding portions, without limitation. Specifically, in the first embodiment, the guiding slopes 332a of the two side protrusion structures 332 protrude further than the portion of the thermal pad 334 located between the guiding slopes 332a of the two side protrusion structures 332. The portion of the thermal pad 334 located between the first steps 332d of the two side protrusion structures 332 is substantially flush with the first steps 332d of the two side protrusion structures 332. Furthermore, the portion of the thermal pad 334 located between the second steps 333g of the two side protrusion structures 332 protrudes further than the second steps 333g of the two side protrusion structures 332. Furthermore, the protruding height H1 of the first step 332d of each side protrusion structure 332 relative to the bottom surface 311 of the heat sink 3 is greater than the protruding height H2 of the second step 333g relative to the bottom surface 311 of the heat sink 3. The front end portion 201b of the plug-in portion 201a of the pluggable module 200 facing the front end of the connector assembly 100 presses against the guide slope 332a when inserted, and pushes up the heat sink 3 and its thermal coupling portion 33. At this stage, the more protruding guide slope 332a can play a guiding role and protect the portion of the thermal pad 334 located between the guide slopes 332a of the two side protrusion structures 332. At this stage, the heat is usually prevented from being inserted due to the action of the pressure elastic member 4. The coupling portion 33 is tilted, with the front portion higher and the rear portion lower. Therefore, due to the action of the first step 332d behind the guiding slope 332a, the front edge of the front portion 201b of the pluggable module 200, after passing through the guiding slope 332a, preferentially contacts the higher first step 332d. This prevents the front portion of the thermal pad 334 from being scratched by the front edge of the front portion 201b of the pluggable module 200 due to the tilt of the thermal coupling portion 33. Furthermore, because the portion of the thermal pad 334 located between the second steps 333g of the two side protrusions 332 protrudes further than the second steps 333g of the two side protrusions 332, the rear portion of the thermal pad 334 can more fully fill the gaps or gaps between the contact surfaces, thereby reducing the contact thermal resistance between the contact surfaces.

[0106] Furthermore, in the first embodiment, the front portion 201b of the plug-in portion 201a of the pluggable module 200 has a front recess 201c formed at the top and biased toward one side in the left-right direction D3, and a front wide portion 201d located on the side of the front recess 201c and biased toward the other side in the left-right direction D3. The front section of the protruding structure 332 corresponding to one side of the front wide portion 201d is configured as a front wide section 332e that widens laterally in the left-right direction D3, while the rear section is configured as a rear narrow section 332f that narrows in the left-right direction D3. The front wide section 332e and the rear narrow section 332f are separated by a small distance, but the front wide section 332e and the rear narrow section 332f may alternatively be connected to each other, without limitation. The front wide section 332e corresponds to the front wide portion 201d of the pluggable module 200. The front wide section 332e can be used to support the front edge of the front wide portion 201d of the pluggable module 200 during the insertion process of the pluggable module 200, thereby further preventing the front section of the thermal pad 334 from being scratched by the front edge of the front wide portion 201d of the pluggable module 200.

[0107] Furthermore, in this first embodiment, the top wall 11 of the guide shield 1 has a blocking piece 111 formed at the rear edge of the window 162 and extending downwardly in a bent direction, and a guide piece 112 formed at the side edge of the window 162 and extending downwardly in a bent direction. The plug-in portion 201a of the pluggable module 200 also has a blocking surface 201e located within the front recess 201c and corresponding to the blocking piece 111, and a guide groove 201f extending rearward from the blocking surface 201e and corresponding to the guide piece 112. When the pluggable module 200 enters the guide shield 1 and is docked with the socket connector 2 of the connector assembly 100, the guide piece 112 cooperates with the guide groove 201f to produce a guiding effect. After the pluggable module 200 and the socket connector 2 of the connector assembly 100 are docked with each other, the blocking piece 111 stops at the blocking surface 201e, thereby guiding and positioning the pluggable module 200 and the connector assembly 100. Furthermore, each side wall 13 of the guide shield cover 1 also has a locking piece 132 extending inward, and the plug-in portion 201a also has two locking recesses 201g formed on both sides and corresponding to the locking pieces 132 of the two side walls 13 respectively. When the pluggable module 200 and the connector assembly 100 are docked with each other, the two locking pieces 132 are snapped into the two locking recesses 201g to lock the pluggable module 200 and the connector assembly 100 to each other.

[0108] See Figure 7 and Figure 8A second embodiment of the connector assembly 100 of the present invention differs from the first embodiment in that the guiding slopes 332a of the two side protrusions 332 are connected to form a guiding structure 335 extending transversely along the left-right direction D3. The thermal coupling portion 33 further includes a recessed groove 336 formed at the rear end of the guiding structure 335 and extending transversely along the left-right direction D3. The front edge of the thermal pad 334 extends into the recessed groove 336. This prevents the front edge of the thermal pad 334 from contacting and scratching the front edge of the front portion 201b of the plug-in portion 201a of the pluggable module 200.

[0109] See Figure 9 and Figure 10 The difference between the third embodiment of the connector assembly 100 of the present invention and the first embodiment is that the two side protrusion structures 332 are aligned with the front end wide portion 201d of the pluggable module 200 (see Figure 1 ) The protruding structure 332 on one side thereof is not divided into the front wide section 332e and the rear narrow section 332f (see Figure 1 ), so that the overall widths of the two side protrusion structures 332 are roughly consistent.

[0110] See Figures 11 to 15 A fourth embodiment of the connector assembly 100 of the present invention differs from the first embodiment in that the guide shield 1 further includes a protruding pad 170a adjacent to the socket 161 and protruding toward the accommodating space 16. The protruding pad 170a and the thermal coupling portion 33 are located on upper and lower opposite sides of the accommodating space 16, respectively. In this fourth embodiment, the protruding pad 170a is integrally formed with a plate 170 located inside the guide shield 1 of a grounding member 17' disposed on the bottom wall 12. The protruding pad 170a extends along the left-right direction D3 in this embodiment. However, in a variant embodiment, the protruding pad 170a may be a separate component provided on the guide shield 1, such as a separate gasket provided on the guide shield 1. Furthermore, the protruding pad 170a may also be formed on other portions of the guide shield 1, and the present invention should not be limited to this fourth embodiment.

[0111] In addition, the guide shield 1 further includes two side protrusions 18 located on either side of the window 162 in the left-right direction D3 and extending along the front-to-back direction D1. The two side protrusions 18 protrude toward the accommodating space 16 and are located on either side of the thermal coupling portion 33 of the heat sink 3 in the left-right direction D3. In the fourth embodiment, the two side protrusions 18 are independent gaskets disposed on the inner side surface of the top wall 11 of the guide shield 1. For example, the two side protrusions 18 may be attached to the guide shield 1 using double-sided tape or an adhesive. However, in a variant embodiment, the two side protrusions 18 may be integrally formed with the guide shield 1, for example, integrally constructed from the left and right sides of the window 162 of the top wall 11 of the guide shield 1. The present invention is not limited to the fourth embodiment.

[0112] The front convex pad 170a and the two side convex pads 18 can be mounted on the pluggable module 200 (see Figure 1 ) during the insertion process, the insertion angle of the pluggable module 200 is limited to prevent the front end portion 201b of the plug-in portion 201a of the pluggable module 200 from tilting too much upward, thereby preventing the thermal pad 334 from being scratched by the front edge of the front end portion 201b of the pluggable module 200.

[0113] Furthermore, in this fourth embodiment, the heat sink 3's fins 32 are interlocked side by side along the left-right direction D3 and are attached to the top surface 312 of the base plate 31, for example, by welding. The two escapement recesses 34 are defined by three groups of interlocked heat sink fins 32 arranged along the front-to-back direction D1. Furthermore, in this fourth embodiment, there is only one elastic pressure member 4, which comprises two elastic pressing portions 41 and two assembly portions 42. Each assembly portion 42 is formed with two engaging holes 421 that engage with corresponding engaging protrusions 131 of the sidewall 13.

[0114] In summary, the connector assembly 100 of the present invention can effectively protect the thermal pad 334 and prevent the thermal pad 334 from being scratched by the front edge of the pluggable module 200 .

[0115] However, the above is merely an embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. All simple equivalent changes and modifications made according to the claims and description of the present invention are still within the scope of the patent of the present invention.

Claims

1. A connector assembly comprising: A guide shielding cover having a receiving space, a socket connected to the receiving space and located at the front end, and a wall constituting the receiving space, wherein the wall is formed with a window connected to the receiving space; and A heat sink has a surface provided on the wall and a thermal coupling portion protruding from the surface. The thermal coupling portion passes through the window into the accommodating space and can move relative to the guide shield. The thermal coupling portion includes two side protrusion structures extending from front to back and jointly defining a recess, and a thermal pad provided in the recess between the two side protrusion structures. Each side protrusion structure has a guide slope located at the front end.

2. The connector assembly according to claim 1, wherein Each side protrusion structure also has a first step located behind the guide slope and a second step located behind the first step. The portion of the thermal pad located between the second steps of the two side protrusion structures protrudes more than the second steps of the two side protrusion structures.

3. The connector assembly according to claim 2, wherein: The protruding height of the first step portion of each side protruding structure relative to the surface of the heat sink is greater than the protruding height of the second step portion relative to the surface of the heat sink.

4. The connector assembly according to any one of claims 1 to 3, wherein: The front section of at least one side of the protruding structure is constructed as a front wide section that is laterally widened.

5. The connector assembly according to any one of claims 1 to 3, wherein: The guiding slopes of the two side protrusion structures are connected to each other to form a guiding structure extending laterally. The thermal coupling portion also has a groove formed at the rear section of the guiding structure and extending laterally. The front edge of the thermal pad extends into the groove.

6. The connector assembly of claim 4, wherein: The guiding slopes of the two side protrusion structures are connected to each other to form a guiding structure extending laterally. The thermal coupling portion also has a groove formed at the rear section of the guiding structure and extending laterally. The front edge of the thermal pad extends into the groove. 7 . The connector assembly according to claim 1 , wherein the guiding slopes of the two side protrusion structures are more protruding than a portion of the thermal pad located between the guiding slopes. 8 . The connector assembly as claimed in claim 1 , further comprising a socket connector covered by the guide shield and a pressure elastic member for assembling the heat sink to the wall of the guide shield.

9. The connector assembly of claim 8, wherein: The pressure elastic member is an elastic clip. The heat sink also has a substrate formed with the surface. The pressure elastic member has an elastic pressing portion elastically pressed against the substrate and an assembly portion extending from the elastic pressing portion and assembled on the guide shield.

10. The connector assembly of claim 1, wherein: The guide shielding cover further comprises a front convex pad adjacent to the socket and protruding toward the accommodating space. The front convex pad and the thermal coupling portion are respectively located at two opposite sides of the accommodating space.

11. The connector assembly of claim 10, wherein: The socket of the guide shielding cover is provided with a grounding piece, which has a plate body arranged on the socket and an elastic finger portion extending backward from the plate body located at the socket, and the front convex pad is formed on the plate body.

12. The connector assembly of claim 10, wherein: The guide shielding cover further comprises side convex pads which are located on both sides of the window, extend frontward and rearward and protrude toward the accommodating space, and the side convex pads are located on both sides of the heat coupling portion of the heat sink.

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