CN114498203A - Connector assembly - Google Patents

Abstract

The invention provides a connector assembly. The connector assembly includes a guide shield, a shield fence, and a heat sink. The guide shielding cover is provided with at least one accommodating space and a wall forming the accommodating space, and the wall is provided with a window communicated with the accommodating space. The shielding enclosure is arranged on the wall of the guiding shielding cover through a fixing structure, and the shielding enclosure is provided with a frame body and an opening which is defined by the frame body in a surrounding way and corresponds to the window. The heat radiator is provided with one surface arranged on the wall and a thermal coupling part convexly arranged on the surface, the thermal coupling part penetrates through the opening of the shielding enclosure and the window to enter the accommodating space, and the frame body of the shielding enclosure is positioned between the wall of the guiding shielding enclosure and the surface of the heat radiator and surrounds the periphery of the window of the wall of the guiding shielding enclosure and the periphery of the thermal coupling part of the heat radiator.

Description

Connector assembly

Technical Field

The present invention relates to a connector assembly, and more particularly, to a connector assembly having a heat sink.

Background

Chinese patent publication No. CN103022820B discloses a connector assembly in which an electromagnetic interference gasket is disposed between a cage and a heat sink. The EMI gasket is mechanically connected to the heat sink by an interference fit and/or a snap fit. However, in this connector assembly, the emi gasket is fixed on the heat sink and moves along with the heat sink, so that when the heat sink is lifted by the plug-in module, a large gap still exists between the heat sink and the opening of the holder.

Disclosure of Invention

It is therefore an object of the present invention to provide a connector assembly that ameliorates at least one of the disadvantages of the prior art.

Accordingly, the connector assembly of the present invention, in some embodiments, includes a guide shield, a shield fence and a heat sink. The guide shielding cover is provided with at least one accommodating space, a socket which is communicated with the accommodating space and is positioned at the front end, and a wall which forms the accommodating space, wherein the wall is provided with a window communicated with the accommodating space. The shielding enclosure is arranged on the wall of the guiding shielding cover through a fixing structure, and the shielding enclosure is provided with a frame body and an opening which is defined by the frame body in a surrounding way and corresponds to the window. The heat radiator is provided with one surface arranged on the wall and a thermal coupling part convexly arranged on the surface, the thermal coupling part passes through the opening and the window of the shielding enclosure to enter the accommodating space and can move relative to the guiding shielding cover, and the frame body of the shielding enclosure is positioned between the wall of the guiding shielding cover and the surface of the heat radiator and surrounds the periphery of the window of the wall of the guiding shielding cover and the periphery of the thermal coupling part of the heat radiator.

In some embodiments, the frame body of the shielding enclosure has a front frame, a rear frame and two side frames, and the fixing structure includes a plurality of fastening structures.

In some embodiments, the fastening structure includes a fastening piece integrally formed on the guiding shield and located beside the window, and a fastening protrusion formed on two side frames of the frame of the shielding fence and fastened to the fastening piece, wherein the fastening piece has a fastening hole, and the fastening protrusion has a fastening protrusion for fastening to the fastening hole of the fastening piece.

In some embodiments, the fastening sheet further has side bars located on two sides of the fastening hole, the fastening protrusion further has limiting protrusions located on two sides of the fastening protrusion, and a limiting groove for accommodating the side bars is formed between the fastening protrusion and the limiting protrusions.

In some embodiments, the heat sink further has a shielding portion formed on the surface and defining a groove together with the thermal coupling portion and the surface, the groove receives the two side frames and the rear frame of the shielding enclosure, and the shielding portion is formed with an opening through which the fastening protrusion penetrates.

In some embodiments, the securing arrangement comprises an adhesive material by which the shield fence is secured to the wall of the lead shield.

In some embodiments, the heat sink further has a shielding portion formed on the surface and defining a groove together with the thermal coupling portion and the surface, the groove accommodating at least one of the front frame, the rear frame and the two side frames of the shielding fence.

In some embodiments, a plurality of said snap-fit formations are staggered one behind the other.

In some embodiments, the heat sink further comprises a socket connector covered by the guiding shield and a pressing elastic member for assembling the heat sink to the wall of the guiding shield.

In some embodiments, the elastic pressing member is an elastic buckle, and the elastic pressing member has an elastic pressing portion elastically pressing against the heat sink, and an assembling portion extending from the elastic pressing portion and assembled to the guiding shield.

The invention can shield the gap between the wall of the guide shielding cover and the surface of the radiator by the shielding fence which is arranged on the wall of the guide shielding cover and is provided with the opening corresponding to the window, and can shield the periphery of the window of the guide shielding cover even when the thermal coupling part of the radiator and the whole radiator are pushed towards the direction far away from the guide shielding cover, thereby enhancing the electromagnetic shielding effect.

Drawings

Other features and effects of the present invention will be apparent from the embodiments with reference to the accompanying drawings, in which:

figure 1 is an exploded perspective view of a first embodiment of a connector assembly of the present invention and a pluggable module;

FIG. 2 is a perspective view of the first embodiment with the receptacle connector of the first embodiment omitted;

FIG. 3 is an exploded perspective view of FIG. 2;

fig. 4 is a perspective view of the guide shield and the shield fence of the first embodiment;

FIG. 5 is an exploded perspective view of FIG. 4;

fig. 6 is an exploded perspective view of the heat sink and the shielding enclosure of the first embodiment;

FIG. 7 is a cross-sectional view taken from FIG. 2;

FIG. 8 is a cross-sectional view taken from FIG. 2 from another perspective;

figure 9 is a cross-sectional view similar to figure 7 showing the pluggable module inserted into the guide cage of the first embodiment;

fig. 10 is a perspective view of a second embodiment of the connector assembly of the present invention;

FIG. 11 is an exploded perspective view of FIG. 10;

fig. 12 is an exploded perspective view of the heat sink and the shielding enclosure of the second embodiment;

fig. 13 is an exploded perspective view of a third embodiment of the connector assembly of the present invention; and

fig. 14 is an exploded perspective view of the guiding shield and the shielding fence according to the third embodiment.

The reference numbers are as follows:

100 connector assembly

1 guide shield cover

11 ceiling wall

12 bottom wall

13 side wall

131 fastening block

14 rear wall

15 pin

16 accommodation space

161 socket

162 window

163 bottom opening

17 ground connection member

171 elastic finger

18 partition wall

181 assembled extension part

181a assembling lug

2 socket connector

21 seat body

211 inserting groove

22 terminal

3 shielding fence

31 frame body

311 front frame

312 rear frame

313 side frame

32 opening

4 radiator

41 substrate

411 bottom surface

412 top surface

42 heat dissipation fin

43 thermal coupling part

44 Heat conducting pad

45 positioning groove

46 shielding part

461 opening hole

47 groove

5 pressing elastic piece

51 elastic pressing part

511 assembling hole

52 Assembly part

521 buttonhole

6 fixing structure

61 buckling structure

611 fastening piece

611a snap-fit hole

611b side edge strip

612 fastening convex part

612a fastening lug

612b limit lug

612c Limit groove

62 adhesive material

200 pluggable module

201 casing

201a plug part

202 plugboard

202a contact finger

203 cable

D1 front-back direction

D2 vertical direction

D3 left and right direction

Detailed Description

Before the present invention is described in detail, it should be noted that in the following description, like elements are represented by like reference numerals.

Referring to fig. 1-5, a first embodiment of the connector assembly 100 of the present invention is adapted to be inserted into a pluggable module 200. The pluggable module 200 includes a housing 201, a board 202 and a cable 203, the housing 201 includes a plug portion 201a, the board 202 is disposed on the plug portion 201a in a manner protruding from the plug portion 201a, the board 202 has a plurality of contact fingers 202a, and the cable 203 is disposed on the housing 201 and mechanically and electrically connected to the board 202. The connector assembly 100 includes a guiding shield 1, a socket connector 2, a shielding fence 3, a heat sink 4 and two pressing elastic members 5. It should be noted that the numbers of the guiding shield 1, the shielding fence 3, the socket connector 2, the heat sink 4 and the pressing spring 5 can be adjusted according to the requirement and can be stacked or combined, and the number is not limited in the first embodiment.

The guiding shield 1 is made of metal, for example, and the guiding shield 1 may be formed by stamping and bending a metal plate through a die. The guide shield case 1 extends in a front-rear direction D1 (the direction indicated by the arrow is front, and the reverse direction is rear) and has a top wall 11, a bottom wall 12 spaced from and opposed to the top wall 11 in an up-down direction D2 (the direction indicated by the arrow is up, and the reverse direction is down), two side walls 13 spaced from and opposed to each other in a left-right direction D3 (the direction indicated by the arrow is right, and the reverse direction is left) and connected to both sides of the top wall 11 and the bottom wall 12, respectively, a rear wall 14 located at the rear end and connected to rear edges of the top wall 11 and the side walls 13, and a plurality of insertion holes (not shown) extending downward from the side walls 13 and adapted to be fixed to a circuit board (not shown) and/or a plurality of pins 15 connected to a ground trace. In addition, the guiding shield 1 further has an accommodating space 16 defined by the top wall 11, the bottom wall 12, the two side walls 13 and the rear wall 14, an insertion opening 161 located at the front end and communicated with the accommodating space 16 for the pluggable module 200 to be inserted into, a window 162 formed on the top wall 11 and extending backward from the front section of the top wall 11 and communicated with the accommodating space 16, and a bottom opening 163 located behind the bottom wall 12 and communicated with the accommodating space 16.

The receptacle connector 2 is covered by the guiding shield 1 through the bottom opening 163, so that the receptacle connector 2 is disposed at the rear section of the accommodating space 16. In addition, the socket connector 2 is mechanically and electrically disposed on the circuit board, the socket connector 2 has an insulative housing 21 and a plurality of terminals 22, the housing 21 has a front-facing insertion slot 211, and the terminals 22 are disposed in the insertion slot 211 and have tail portions (not shown) electrically and mechanically connected to the circuit board. After the pluggable module 200 enters the guiding shield 1 from the receptacle 161, the plugging plate 202 protruding the plugging portion 201a of the pluggable module 200 can be inserted into the plugging slot 211 of the receptacle connector 2, so that the contact finger 202a of the plugging plate 202 contacts the terminal 22 in the plugging slot 211 of the receptacle connector 2, and the pluggable module 200 and the receptacle connector 2 of the connector assembly 100 are butted against each other. In addition, a plurality of grounding members 17 are disposed at the socket 161 of the guiding shield 1, the grounding members 17 have a plurality of elastic fingers 171 extending rearward from the socket 161 and distributed outside the guiding shield 1 and inside the guiding shield 1, one of the elastic fingers 171 located outside the guiding shield 1 is used for contacting a peripheral portion of a chassis (not shown) located in a mounting hole (not shown), and one of the elastic fingers 171 located inside the guiding shield 1 is used for contacting the pluggable module 200.

The shielding enclosure 3 is disposed on the top wall 11 of the guiding and shielding cover 1 through a fixing structure 6, and the material of the shielding enclosure 3 is a material capable of shielding or absorbing electromagnetic waves, for example, a metal material (e.g., a solid metal frame, a wire mesh (wire mesh), a metal spring (spring)), or a Conductive material such as a Conductive Elastic Gasket (Conductive rubber), a Conductive foam (foam), or the like. The shielding enclosure 3 has a frame 31 and an opening 32 defined by the frame 31 and corresponding to the window 162, and the opening 32 may be approximately the same size as the window 162, for example. In the first embodiment, the frame 31 has a front frame 311 located at the front, a rear frame 312 located at the rear, and two side frames 313 connected between the front frame 311 and the rear frame 312 and arranged at intervals along the left-right direction D3. The securing formation 6 comprises a plurality of snap-fit formations 61. Each snap-fit structure 61 includes a plurality of snap-fit tabs 611 formed at the junction of the top wall 11 and the two side walls 13 of the guiding shield 1 and located beside the window 162, and a plurality of snap-fit protrusions 612 formed on the two side frames 313 of the frame 31 of the shielding fence 3 and extending outward and respectively snap-fit with the snap-fit tabs 611. In the first embodiment, the fastening tabs 611 are vertically extended upward along the up-down direction D2, and the fastening protrusions 612 are laterally extended along the left-right direction D3, but not limited thereto. Each of the fastening tabs 611 has a fastening hole 611a, and each of the fastening protrusions 612 has a fastening protrusion 612a for fastening to the fastening hole 611a of the corresponding fastening tab 611. The shielding enclosure 3 can be fixedly disposed on the top wall 11 of the guiding shielding cover 1 by the fastening holes 611a of the fastening tabs 611 and the fastening protrusions 612a of the fastening protrusions 612. In detail, each fastening tab 611 further has two side bars 611b located at two sides of the fastening hole 611a, each fastening protrusion 612 further has two position-limiting protrusions 612b located at two sides of the fastening protrusion 612a, and two position-limiting grooves 612c respectively accommodating the two side bars 611b are formed between the fastening protrusion 612a and the position-limiting protrusions 612b, thereby enhancing the fastening strength between the fastening tabs 611 and the fastening protrusions 612 a. In addition, in the first embodiment, the snap-fit structures 61 on the two side frames 313 may be staggered from each other along the front-back direction D1, for example, so that the assembly between the guiding shield case 1 and the shielding fence 3 can be more stable, and when a plurality of connector assemblies 100 are closely juxtaposed, the snap-fit structures 61 of different connector assemblies 100 can be prevented from interfering with each other.

It should be noted that the fixing structure 6 may further include an adhesive material 62 (see fig. 6), for example, and the bottom of the shielding enclosure 3 is fixed to the top wall 11 of the guiding shielding enclosure 1 through the adhesive material 62. In a variant embodiment, the fixing structure 6 may also comprise only the adhesive material 62. The adhesive material 62 may be, for example, an adhesive, a double-sided tape, or other adhesive material 62.

Referring to fig. 2 to 3 and 6 to 8, the heat sink 4 includes a substrate 41 having a bottom surface 411 and a top surface 412, a plurality of heat dissipation fins 42 fastened to each other side by side along the left-right direction D3 and disposed on the top surface 412 of the substrate 41, and a thermal coupling portion 43 protruding downward and disposed on the bottom surface 411 of the substrate 41, wherein the plurality of heat dissipation fins 42 may be disposed on the top surface 412 of the substrate 41 by welding, for example, but not limited thereto. The bottom surface 411 of the substrate 41 is disposed on the top wall 11 of the guiding and shielding case 1, the thermal coupling portion 43 passes through the window 162 on the top wall 11 and enters the accommodating space 16, and the whole heat sink 4 and the thermal coupling portion 43 thereof can move relative to the guiding and shielding case 1. It should be noted that although the shielding fence 3 and the heat sink 4 are mounted on the top wall 11 in the first embodiment, in other embodiments, the shielding fence 3 and the heat sink 4 may be mounted on the bottom wall 12 formed with the window 162, or two shielding fences 3 and two heat sinks 4 may be mounted on the top wall 11 and the bottom wall 12 formed with the window 162, respectively. In addition, although the thermal coupling portion 43 is directly and integrally formed on the substrate 41 to move along with the substrate 41 in the first embodiment, in other embodiments, the thermal coupling portion 43 may be a separate component that is assembled to the substrate 41 to be movable relative to the substrate 41, or a separate component that is fixedly assembled to the substrate 41 and moves together with the substrate 41. In addition, in the first embodiment, the Thermal coupling portion 43 is provided with a Thermal pad 44, the Thermal pad 44 can sufficiently fill the seam or gap of the contact surface to reduce the contact Thermal resistance between the contact surfaces, the Thermal pad 44 can be, for example, a Thermal Interface Material (Thermal Interface Material), the Material of which can be selected from a combination of materials with high Thermal conductivity, high flexibility, compressibility, insulation, wear resistance, and the like, and can be, for example, a combination of a base Material and a phase change Material (phase change Material), such as a structure with two or more layers, the base Material of the outer layer can be a Material with Thermal conductivity, lubricity, wear resistance, and tear resistance (such as Teflon (Teflon)), and the Material of the inner layer can be a phase change Material. In addition, the thermal pad 44 may also have an electromagnetic wave Shielding function (EMI Shielding) by a combination of material changes.

Referring to fig. 2, 3, 7 and 8, the plurality of elastic pressing members 5 are elastic fasteners in the first embodiment and are used to assemble the heat sink 4 to the top wall 11 of the guiding shield 1. Each of the pressing elastic members 5 has an elastic pressing portion 51 elastically pressing against the plurality of heat dissipating fins 42 of the heat sink 4 from above, and two assembling portions 52 extending downward from the left and right ends of the elastic pressing portion 51 and respectively assembled to the two side walls 13 of the guiding shield case 1. In detail, each sidewall 13 of the guiding shield 1 on both sides is formed with two fastening blocks 131, and each assembling portion 52 is formed with a fastening hole 521 correspondingly fastened with the fastening block 131 of the corresponding sidewall 13. In addition, the heat sink 4 further has two positioning grooves 45 formed on the plurality of heat dissipating fins 42 for positioning with the elastic pressing portions 51 of the two pressing elastic members 5. It should be noted that, although the number of the elastic pressing portions 51 and the assembling portions 52 of the pressing elastic member 5 is two-to-two in the first embodiment, in other embodiments, the number of the elastic pressing portions 51 and the assembling portions 52 may be adjusted to any number according to the requirement, and the pressing elastic member 5 may be replaced by another kind of pressing elastic member 5 for pressing the heat sink 4 instead of an elastic buckle, without being limited to the first embodiment.

Referring to fig. 1, 7 and 9, when the pluggable module 200 enters the guiding shield 1 and is mated with the receptacle connector 2 of the connector assembly 100, the top surface 412 of the mating portion 201a of the housing 201 of the pluggable module 200 contacts the thermal coupling portion 43 of the heat sink 4, and pushes up the thermal coupling portion 43 of the heat sink 4 together with the entire heat sink 4 (see fig. 9), and further, the downward pressing reaction force applied to the heat sink 4 by the pressing elastic member 5 will make the thermal coupling portion 43 of the heat sink 4 closely abut against the mating portion 201a of the housing 201 of the pluggable module 200, so as to maintain the contact relationship between the pluggable module 200 and the heat sink 4, and ensure the heat dissipation performance.

The frame 31 of the shielding enclosure 3 is located between the top wall 11 of the guiding and shielding case 1 and the bottom surface 411 of the heat sink 4, and surrounds the window 162 of the top wall 11 of the guiding and shielding case 1 and the thermal coupling portion 43 of the heat sink 4. By the shielding fence 3 disposed on the top wall 11 of the guiding shielding case 1 and having the opening 32 corresponding to the window 162, the gap between the top wall 11 of the guiding shielding case 1 and the bottom surface 411 of the heat sink 4 can be shielded, and even when the thermal coupling portion 43 of the heat sink 4 and the whole heat sink 4 are pushed upward, the gap can still be shielded around the window 162 of the guiding shielding case 1, so as to enhance the electromagnetic shielding effect.

In the first embodiment, the heat sink 4 further has a shielding portion 46 formed on the bottom surface 411 of the substrate 41 and defining a groove 47 together with the thermal coupling portion 43 and the bottom surface 411, the shielding portion 46 is located on the left, right, and rear sides of the thermal coupling portion 43, so that the groove 47 is substantially U-shaped and accommodates the two side frames 313 and the rear frame 312 of the shielding fence 3, and the shielding portion 46 is formed with a plurality of openings 461 through which a plurality of fastening protrusions 612 penetrate to fasten to corresponding fastening pieces 611. Preferably, as shown in fig. 9, the shielding fence 3 is still partially located in the recess 47 even when the thermal coupling portion 43 of the heat sink 4 is pushed upward along with the entire heat sink 4 by the pluggable module 200. The shielding enclosure 3 can be covered by the shielding portion 46 and the groove 47, so as to enhance the shielding effect and beautify the appearance of the connector assembly 100.

Referring to fig. 10 to 12, a second embodiment of the connector assembly 100 of the present invention is different from the first embodiment in that the shielding portion 46 of the heat sink 4 of the second embodiment is only located at the rear side of the thermal coupling portion 43, so that the groove 47 is substantially in a shape of a straight line and accommodates the rear frame 312 of the shielding fence 3. It should be noted that, in other embodiments, the shielding portion 46 of the heat sink 4 can be located on at least either side of the thermal coupling portion 43, so that the groove 47 accommodates at least one of the front frame 311, the rear frame 312 and the two side frames 313 of the shielding enclosure 3.

In addition, the number of the pressing elastic members 5 of the second embodiment is one, and the pressing elastic member 5 has two elastic pressing portions 51 elastically pressing against the top surface 412 of the substrate 41 of the heat sink 4 from above and two assembling portions 52 connected between the two elastic pressing portions 51 and respectively assembled on the two side walls 13 of the guiding shielding case 1, and each assembling portion 52 is formed with two fastening holes 521 correspondingly fastened with the fastening blocks 131 of the corresponding side wall 13. In addition, the heat dissipation fins 42 of the heat sink 4 are integrally formed extending from the top surface 412 of the substrate 41 in the present second embodiment.

Referring to fig. 13 to 14, a third embodiment of the connector assembly 100 of the present invention is different from the first embodiment in that the guiding shield 1 of the third embodiment further has a partition wall 18 located between the two side walls 13 and spaced from and side by side with the two side walls 13, the guiding shield 1 has two receiving spaces 16 defined by the top wall 11, the bottom wall 12, the two side walls 13, the rear wall 14 and the partition wall 18, two inserting holes 161 correspondingly communicated with the two receiving spaces 16, and two windows 162 formed on the top wall 11 and correspondingly communicated with the two receiving spaces 16. The number of the shielding fences 3 and the number of the heat sinks 4 of the third embodiment are two, the two shielding fences 3 are respectively disposed on the top wall 11 of the guiding shielding cover 1 through two fixing structures 6, and the thermal coupling portions 43 of the two heat sinks 4 respectively pass through the two windows 162 on the top wall 11 and enter the two accommodating spaces 16. Further, since the snap structures 61 on the left and right sides of each fixing structure 6 are offset from each other in the front-rear direction D1, the snap structures 61 of the two fixing structures 6 can be prevented from interfering with each other.

In addition, the elastic pressing portion 51 of each pressing elastic member 5 of the third embodiment spans across two heat sinks 4 and presses against the two heat sinks 4, the partition wall 18 is formed with two assembling extensions 181 which upwardly penetrate through the top wall 11, an assembling tab 181a is formed at the top end of each assembling extension 181, and the elastic pressing portion 51 of each pressing elastic member 5 is formed with an assembling hole 511 which is fastened with the corresponding assembling tab 181a, thereby enhancing the supporting force provided by the guiding shielding case 1 to the middle of the elastic pressing portions 51 of the two pressing elastic members 5.

In summary, the shielding fence 3 disposed on the top wall 11 of the guiding shield 1 can shield the gap between the top wall 11 of the guiding shield 1 and the bottom surface 411 of the heat sink 4, and can shield around the window 162 of the guiding shield 1 even when the thermal coupling portion 43 of the heat sink 4 and the entire heat sink 4 are pushed upward, so as to enhance the electromagnetic shielding effect.

However, the above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the contents of the specification should be included in the scope of the present invention.

Claims (10)

1. A connector assembly, comprising:

the guide shielding cover is provided with at least one accommodating space, a socket which is communicated with the accommodating space and is positioned at the front end, and a wall forming the accommodating space, wherein the wall is provided with a window communicated with the accommodating space;

a shielding enclosure disposed on the wall of the guiding shield by a fixing structure, the shielding enclosure having a frame body and an opening defined by the frame body and corresponding to the window,

the heat radiator is provided with one surface arranged on the wall and a thermal coupling part convexly arranged on the surface, the thermal coupling part passes through the opening and the window of the shielding enclosure to enter the accommodating space and can move relative to the guiding shielding cover, and the frame body of the shielding enclosure is positioned between the wall of the guiding shielding cover and the surface of the heat radiator and surrounds the periphery of the window of the wall of the guiding shielding cover and the periphery of the thermal coupling part of the heat radiator.

2. The connector assembly of claim 1, wherein the frame of the shielding enclosure has a front frame, a rear frame and two side frames, and the securing structure comprises a plurality of snap-fit structures.

3. The connector assembly of claim 2, wherein the snap-fit structure comprises a snap-fit piece integrally formed on the guiding shield and beside the window, and a snap-fit protrusion formed on two side frames of the shielding fence frame and correspondingly snap-fit with the snap-fit piece, the snap-fit piece has a snap-fit hole, and the snap-fit protrusion has a snap-fit projection for snap-fitting with the snap-fit hole of the snap-fit piece.

4. The connector assembly of claim 3, wherein the fastening tab further has side bars located on both sides of the fastening hole, the fastening protrusion further has a position-limiting protrusion located on both sides of the fastening protrusion, and a position-limiting groove for receiving the side bars is formed between the fastening protrusion and the position-limiting protrusion.

5. The connector assembly of any one of claims 3 to 4, wherein the heat sink further has a shielding portion formed on the surface and defining a groove together with the thermal coupling portion and the surface, the groove accommodating the two side frames and the rear frame of the shielding fence, the shielding portion being formed with an opening through which the buckling protrusion protrudes.

6. The connector assembly of claim 1, wherein the securing feature comprises an adhesive material by which the shield fence is secured to the wall of the lead shield.

7. The connector assembly of any one of claims 1 or 6, wherein the frame body of the shielding enclosure has a front frame, a rear frame and two side frames, and the heat sink further has a shielding portion formed on the face and defining a groove together with the thermal coupling portion and the face, the groove receiving at least one of the front frame, the rear frame and the two side frames of the shielding enclosure.

8. The connector assembly of any one of claims 2 to 4, wherein a plurality of said snap-fit formations are staggered one behind the other.

9. The connector assembly of claim 1, further comprising a receptacle connector covered by said lead shield and a biasing spring for assembling said heat sink to said wall of said lead shield.

10. The connector assembly of claim 9, wherein the elastic pressing member is an elastic buckle, and the elastic pressing member has an elastic pressing portion elastically pressing against the heat sink, and an assembling portion extending from the elastic pressing portion and assembled to the guiding shield.

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