TW202425442A - Connector assembly including a guide shield, a heat sink and a fastener, improving thermal conduction efficiency, and reducing damages of the thermal interface material - Google Patents

Abstract

A connector assembly includes a guide shield, a heat sink and a fastener. The guide shield has a plug-in channel and a return spring. The heat sink has a base plate, a thermal coupling portion and a pushed portion extending downward from the base plate and extending into the plug-in channel, and a spring support structure facing upward. The spring support structure has a first support portion and a second support portion. The return spring of the guide shield faces forward to elastically act on the heat sink. The fastener is configured to assemble the heat sink to the guide shield. The fastener has a spring portion that exerts an elastic force downward on the spring support structure. When the pushed portion has not been pushed, the heat sink can be moved from a lower initial position to an upper transition position. The first support portion of the heat sink moves to work with the spring portion and is subject to a smaller transition load force. When the pushed portion has been pushed, the heat sink can move backward to a rear working position. The second support portion of the heat sink moves to work with the spring portion and is subject to a larger transition load force.

Description

Connector Assemblies

The present invention relates to a connector assembly, in particular to a connector assembly with a guide shielding cover and a heat sink.

Chinese invention patent publication number CN1314307C (corresponding to US invention patent publication number US6752663B2) discloses that a clip is mounted on a heat sink and fixed on a guide frame. The spring component of the clip applies force to the heat sink to maintain a suitable abutment interface and contact force. When the module assembly is inserted into the cavity of the guide frame, the module assembly pushes the heat sink upward, and the heat sink overcomes the initial force applied by the clip to move upward and further compress the spring component of the clip. Therefore, the clip provides downward pressure through the spring component so that the heat sink applies contact pressure on the module assembly to maintain contact and heat transfer. However, during the movement of the module assembly after it pushes the heat sink upward, the pressure applied between the heat sink and the module assembly by the clip is the same as the final pressure in the plug-in state, so it can be known that the module assembly will have a large friction resistance during the insertion and movement. In addition, in the case where a thermal interface material is included between the heat sink and the module assembly, the module assembly will scratch the thermal interface material during the insertion and movement, and the greater the pressure between the module assembly and the heat sink, the more likely it is to cause damage to the thermal interface material.

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

Therefore, in some embodiments of the connector assembly of the present invention, it includes a guide shielding cover, a heat sink and a clip. The guide shielding cover has a plug-in channel and a return spring. The heat sink has a base plate, a thermal coupling portion and a push portion extending downward from the base plate and extending into the plug-in channel, and a spring support structure facing upward, the spring support structure has a first support portion and a second support portion, and the return spring of the guide shielding cover acts elastically on the heat sink forward. The clip is used to assemble the heat sink to the guide shielding cover, and the clip has a spring portion of the spring support structure that applies an elastic force downward to the heat sink. Wherein, when the pushed portion has not been pushed, the heat sink can be moved from a lower initial position to an upper transition position relative to the guide shielding cover, and the first supporting portion of the heat sink cooperates with the spring portion of the clip, and the spring portion applies a downward transition load force to the heat sink; when the pushed portion is pushed backward, the heat sink can be moved backward to a rear working position relative to the guide shielding cover, and the second supporting portion of the heat sink moves to the spring portion that cooperates with the clip, and the spring portion applies a downward working load force to the heat sink; wherein the working load force is greater than the transition load force.

In some implementations, the first supporting portion is configured as a supporting concave portion that is concave downward, and the second supporting portion is configured as a supporting convex portion that is convex upward.

In some embodiments, the spring portion has an avoidance groove; when the first support portion of the heat sink cooperates with the spring portion of the clip, a portion of the second support portion is accommodated in the avoidance groove, and another portion of the second support portion is staggered with the spring portion; when the second support portion of the heat sink cooperates with the spring portion of the clip, the second support portion moves below the bottom surface of the spring portion and lifts up the spring portion.

In some embodiments, the guide shielding cover also has two side walls, the buckle has two buckling parts respectively buckled to the two side walls of the guide shielding cover, the spring part extends laterally, and the spring part has two connecting arms extending laterally and obliquely upward and respectively connected to the two buckling parts.

In some embodiments, the heat sink further has heat dissipation fins protruding upward, and spacing grooves formed between the heat dissipation fins and extending laterally, and the spring support structure is constructed on the bottom surface of the spacing grooves.

In some embodiments, the guide shielding cover also has a top wall, the top wall is formed with a window connected to the plug-in channel, and an opening connected to the plug-in channel and located behind the window, the pushed portion of the heat sink is located behind the thermal coupling portion, the heat sink also has a return spring action portion extending downward from the substrate and located behind the pushed portion, the thermal coupling portion extends into the plug-in channel through the window, the pushed portion and the return spring action portion extend into the plug-in channel through the opening, and the return spring of the guide shielding cover elastically acts forward on the return spring action portion of the heat sink.

In some implementations, the guide shield further has a rear wall, and the return spring of the guide shield is integrally constructed on the rear wall.

In some implementations, the spring portion has a stop flange located at a front edge, and the stop flange is used for the heat sink to lean back to limit the heat sink in a rearward direction.

In some embodiments, the thermal coupling portion of the heat sink includes a thermal interface material.

In some embodiments, the connector assembly is suitable for plugging with a pluggable module. When the pluggable module has not yet been inserted into the plug-in channel of the guide shield, the pushed portion has not yet been pushed, and the heat sink is located at the initial position below. The first support portion cooperates with the spring portion, and the second support portion is staggered with the spring portion, and the spring portion applies a downward preload force to the heat sink. When the pluggable module is in the first insertion stage before being inserted into the plug-in channel of the guide shield and pushing the pushed portion of the heat sink, the pluggable module lifts the heat sink upward to the transition position, and the first support portion lifts the spring portion upward. The second supporting portion moves below the bottom surface of the spring portion and further lifts the spring portion, causing the spring portion to be further elastically deformed, and the spring portion applies a downward transition load force to the heat sink; when the pluggable module is inserted into the plug-in channel of the guide shielding cover and pushes the pushed portion of the heat sink backward in the second insertion stage, the heat sink moves backward to the working position, and the heat sink acts backward on the reset spring, the second supporting portion moves below the bottom surface of the spring portion and further lifts the spring portion, causing the spring portion to be further elastically deformed, and the spring portion applies a downward working load force to the heat sink, wherein the working load force is greater than the transition load force and greater than the pre-load force.

The present invention can provide a smaller transition load force in the first insertion stage of the plugging process by the two-stage movement of the heat sink and the two-stage change of the applied force of the clip, reduce the contact pressure between the heat sink and the surface of the pluggable module in this stage, so as to reduce the friction resistance in the plugging process, and provide a larger working load force when the plugging is completed (after the second insertion stage of the plugging process) to improve the heat conduction efficiency and increase the heat dissipation effect. Furthermore, in the structure where the heat sink includes a thermal interface material, the possibility of damage to the thermal interface material can be reduced.

Referring to Fig. 1 to Fig. 4, an embodiment of the connector assembly 100 of the present invention is suitable for plugging with a pluggable module 200. The pluggable module 200 has a housing 201, a plug-in circuit board 202 and a cable 203. The housing 201 has a plug-in portion 201a, the plug-in circuit board 202 is arranged at the front end of the plug-in portion 201a, and the cable 203 is arranged at the rear end of the housing 201 and electrically connected to the plug-in circuit board 202. The connector assembly 100 includes a guide shield 1, a socket connector 2, a heat sink 3 and a buckle 4.

The guide shielding cover 1 is, for example, made of a metal sheet by die stamping and bending. The guide shielding cover 1 is used to be set on a circuit board (not shown) and extends along a front-to-back direction D1 (the arrow direction is front, and the reverse direction is rear). The guide shielding cover 1 includes a cover body 11 and a plurality of grounding members 12 assembled on the cover body 11. The housing 11 has a top wall 111, a bottom wall 112 spaced apart from the top wall 111 along a vertical direction D2 (arrow direction is upward, reverse direction is downward), two side walls 113 spaced apart along a horizontal direction D3 (arrow direction is right, reverse direction is left) and connected between the top wall 111 and the bottom wall 112, a rear wall 114 connected to the top wall 111 and the rear edges of the two side walls 113, and a plug channel 115 defined by the top wall 111, the bottom wall 112, the two side walls 113 and the rear wall 114. The lower edge structure of the side walls 113 has a plurality of pins 116 extending downward and suitable for being fixed on the circuit board and/or connected to a grounding track (not shown). The plug-in channel 115 has a front insertion opening 115 a facing forward and for the plug-in portion 201 a of the pluggable module 200 to be inserted into, and a bottom opening 115 b located at the rear of the bottom.

The top wall 111 of the cover body 11 has a window 111a connected to the plug-in channel 115, two openings 111b connected to the plug-in channel 115 and located behind the window 111a and arranged in sequence front to back, a guide portion 111c extending downward from the rear section of one side of the window 111a into the plug-in channel 115, and a stopper 111d extending downward from the rear end of the window 111a into the plug-in channel 115. Each of the side walls 113 of the housing 11 has two buckle blocks 113a protruding outwardly along the left-right direction D3 and arranged along the front-back direction D1, an opening 113b connected to the insertion channel 115, and an inwardly extending elastic sheet 113c extending obliquely from the front edge of the opening 113b toward the inside of the housing 11 and toward the rear. The rear wall 114 of the housing 11 has a return spring 114a formed in an integral structure and extending forward into the insertion channel 115.

The cover 11 is assembled with the grounding members 12 around the front socket 115a. In this embodiment, the guide shield 1 of the connector assembly 100 can be set in a mounting hole (not shown) of a housing (not shown), and each grounding member 12 has a plurality of elastic fingers 121 extending backward from the front end of the cover 11 and distributed on the outer side and the inner side of the cover 11. The elastic fingers 121 located on the outer side of the cover 11 are used to contact the edge of the mounting hole of the housing, and the elastic fingers 121 located on the inner side of the cover 11 are used to contact the pluggable module 200.

The socket connector 2 is used to be arranged on the circuit board and is accommodated in the rear section of the plug-in channel 115 of the guide shielding cover 1 through the bottom opening 115b. The socket connector 2 has an insulating shell 21 and a plurality of terminals 22 arranged on the shell 21. The shell 21 has a docking slot 211 facing forward and for inserting the plug-in circuit board 202 of the pluggable module 200. Each of the terminals 22 has a contact portion 221 located in the docking slot 211 and a tail portion 222 extending downward from the bottom of the shell 21 (see FIG. 8). The tail portions 222 of the terminals 22 are respectively used to be soldered to the solder pads on the circuit board to connect to the conductive traces on the circuit board.

The plug-in portion 201a of the pluggable module 200 has two locking grooves 201b located at the left and right sides and used to correspond to the inwardly extending elastic sheets 113c of the two side walls 113 of the cover body 11, a guide groove structure 201c located at the top of the front end and used to correspond to the guide portion 111c of the top wall 111 of the cover body 11, and a positioning structure 201d located at the top and used to correspond to the stopper 111d of the top wall 111 of the cover body 11. The inwardly extending elastic sheets 113c of the two side walls 113 of the cover body 11 are used to cooperate with the locking grooves 201b of the pluggable module 200 inserted into the plug-in channel 115 to produce a locking effect. The guide portion 111c is used to be inserted into the guide groove structure 201c of the pluggable module 200 to produce a guiding effect. The stop portion 111d is used to be stopped at the alignment structure 201d of the pluggable module 200 to limit the insertion position of the pluggable module 200. In addition, the pluggable module 200 also has an unlocking member 204, and when the unlocking member 204 is pulled, the inner extension spring sheet 113c can be pushed out of the buckle groove 201b.

The clip 4 is used to assemble the heat sink 3 to the top wall 111 of the cover body 11 of the guide shielding cover 1 so that the heat sink 3 can move forward and backward and up and down. The heat sink 3 has a base plate 31, a heat coupling portion 32 extending downward from the base plate 31 and extending into the plug-in channel 115 through the window 111a, a push portion 33 extending downward from the base plate 31 and located behind the heat coupling portion 32 and extending into the plug-in channel 115 through the opening 111b at the front, and a push portion 33 extending downward from the base plate 31 and located behind the push portion 33 and extending into the plug-in channel 115 through the opening 111b at the rear. The heat coupling portion 32 includes a return spring acting portion 34 extending along the front-rear direction D1 and arranged in parallel in the left-right direction D3 and integrally formed to protrude upward from the top surface of the base plate 31, two spacing grooves 36 arranged along the front-rear direction D1 and formed between the heat dissipation fins 35 and extending laterally along the left-right direction D3, and two spring supporting structures 37 extending upward and laterally on the bottom surfaces of the two spacing grooves 36. The heat coupling portion 32 has a guide inclined surface 321 located at the front end and extending obliquely backward and downward. In addition, although the heat sink fins 35 are integrally formed to protrude from the base plate 31 in the present embodiment, in a modified embodiment, the heat sink fins 35 may also be a plurality of heat sink plates that are interlocked with each other and are disposed on the top surface of the base plate 31 by, for example, welding. The pushed portion 33 and the return spring action portion 34 are both configured as a convex block, and the return spring 114a of the guide shield 1 acts on the return spring action portion 34 of the heat sink 3 in a forward elastic manner.

The window 111a of the top wall 111 is roughly corresponding to the width of the thermal coupling portion 32 in the left-right direction D3, so the two side edges of the window 111a limit the movement of the thermal coupling portion 32 in the left-right direction D3; and the length of the window 111a of the top wall 111 in the front-to-back direction D1 is greater than the length of the thermal coupling portion 32 in the front-to-back direction D1, so the thermal coupling portion 32 can move relative to the window 111a in the front-to-back direction D1, but the front edge and the rear edge of the window 111a can respectively limit the frontmost position and the rearmost position of the thermal coupling portion 32 in the front-to-back direction D1.

The thermal coupling portion 32 is used to contact the pluggable module 200 inserted into the plug-in channel 115, thereby enhancing the heat dissipation of the heat sink 3. In this embodiment, the thermal coupling portion 32 includes a thermal interface material (not shown) located at the bottom and used to contact the pluggable module 200. The thermal interface material can be selected from a combination of materials having high thermal conductivity, high flexibility, compressibility, insulation, wear resistance, etc., or can be selected from a combination of a base material and a phase change material.

Referring to Figures 3 to 6, each of the spring supporting structures 37 has two first supporting portions 371 and two second supporting portions 372 extending laterally along the left-right direction D3, wherein the first supporting portions 371 and the two second supporting portions 372 are staggered with each other in the front-rear direction D1 and the up-down direction D2. In other words, the two second supporting portions 372 are respectively located in front of the two first supporting portions 371 and are positioned higher than the two first supporting portions 371. Specifically, the first supporting portion 371 is configured as a supporting recessed portion that is concave downward and extends laterally along the left-right direction D3, and the second supporting portion 372 is configured as a supporting protrusion that is convex upward and is located in front of the corresponding first supporting portion 371 and extends laterally along the left-right direction D3.

Referring to Figs. 1, 2, 5 and 6, the clip 4 is immovably assembled to the guide shield 1, and the clip 4 has two spring parts 41 extending laterally along the left-right direction D3 and exerting elastic force downward on the two spring support structures 37 of the heat sink 3, and two buckling parts 42 connected to the left and right sides of the two spring parts 41 and buckled to the two side walls 113 of the guide shield 1 respectively. Each of the buckling parts 42 has two buckling holes 421 buckled to the two buckling blocks 113a of the corresponding side walls 113. The elasticity of the two spring parts 41 enables the heat sink 3 to move in the up-down direction D2 relative to the guide shield 1.

Each of the spring portions 41 has two connecting arms 411 extending laterally and obliquely upward along the left-right direction D3 and connected to the two buckling portions 42 respectively, an avoidance groove 412 extending along the left-right direction D3, and a stopping flange 413 extending upward at the front edge and for the heat sink fin 35 of the heat sink 3 to lean back to limit the heat sink 3 in the rear direction. The clip 4 can limit the heat sink 3 in the rearward direction through the stop ridge 413 located at the front edge of the spring portion 41. For example, the rear edge of the spring portion 41 can also be used for the heat sink fin 35 of the heat sink 3 to lean forward to limit the heat sink 3 in the forward direction, and the rear edge of the spring portion 41 can also be provided with a structure similar to the stop ridge 413. In other words, the clip 4 can have the function of assisting in limiting the position of the heat sink 3 in the front-rear direction D1.

Referring to Figures 1, 5, 7 and 8, when the pluggable module 200 has not yet been inserted into the insertion channel 115 of the guide shielding cover 1, the pushed portion 33 of the heat sink 3 has not yet been pushed, and the heat sink 3 is located at an initial position below and in the front, the first supporting portion 371 cooperates with the spring portion 41 of the clip 4 and interacts with the spring portion 41 of the clip 4, and the second supporting portion 372 and the spring portion 41 of the clip 4 are staggered in the front-rear direction D1, and the two spring portions 41 of the clip 4 apply a downward and elastic pre-load force to the heat sink 3. In this state, one of the second supporting portions 372 at the rear is accommodated in the avoidance groove 412 without interacting with the spring portion 41 of the buckle 4, and the other of the second supporting portions 372 at the front is located in front of the spring portion 41 and is staggered from the spring portion 41.

Referring to FIG. 9 , during the first insertion stage before the pluggable module 200 is inserted into the insertion channel 115 of the guide shielding cover 1 and pushes the pushed portion 33 of the heat sink 3, the pluggable module 200 lifts the heat sink 3 upward to a transition position located above and in front of the heat sink 3 through the cooperation between the guiding slope 321 of the thermal coupling portion 32 of the heat sink 3 and the pluggable module 200. The heat sink 3 moves upward but does not move backward, and the upper surface of the pluggable module 200 contacts the thermal coupling portion 32 of the heat sink 3. At this time, the first supporting portion 371 cooperates with the spring portion 41 of the clip 4, and lifts the spring portion 41 of the clip 4 upward and causes the two spring portions 41 of the clip 4 to produce elastic deformation, and the two spring portions 41 of the clip 4 apply a downward and elastic transition load force to the radiator 3. In this first insertion stage, because the radiator 3 only moves upward and not backward, one of the second supporting portions 372 is still accommodated in the avoidance groove 412, and the other second supporting portion 372 is still located in front of the spring portion 41 and staggered with the spring portion 41. The transition load force is greater than the pre-load force.

In other words, when the pluggable module 200 has not yet been inserted into the plug-in channel 115 of the guide shielding cover 1, and in the first insertion stage of the pluggable module 200 into the plug-in channel 115 of the guide shielding cover 1, the pushed portion 33 has not yet been pushed, the first supporting portion 371 of the heat sink 3 interacts with the spring portion 41 of the clip 4, and at this time the heat sink 3 can move between the initial position at the bottom and front and the transition position at the top and front relative to the guide shielding cover 1.

10 and 11 , when the pluggable module 200 is inserted into the insertion channel 115 of the guide shielding cover 1 and pushes the pushed portion 33 of the heat sink 3 backward in the second insertion stage, the heat sink 3 moves backward relative to the guide shielding cover 1 to an upper and rear working position, and the return spring acting portion 34 of the heat sink 3 acts backward on the return spring 114a to compress the return spring 114a. At this time, the first supporting portion 371 of the heat sink 3 leaves the spring portion 41 of the clip 4, and the second supporting portion 372 of the heat sink 3 moves to a position matching the spring portion 41 of the clip 4 and interacts with the spring portion 41 of the clip 4. In this state, the second supporting portion 372 moves backward to below the bottom surface of the spring portion 41 of the clip 4 and further lifts the spring portion 41, and causes the spring portion 41 to further elastically deform (the amount of elastic deformation increases). The two spring portions 41 of the clip 4 apply a downward and elastic working load force to the heat sink 3 to provide a working contact pressure between the heat sink 3 and the surface of the pluggable module 200. Wherein, the working load force is greater than the transition load force which is greater than the pre-load force.

When the pluggable module 200 begins to withdraw from the plug-in channel 115, but before losing contact with the thermal coupling portion 32 of the heat sink 3, the elastic force of the return spring 114a pushes the return spring action portion 34 forward, so that the heat sink 3 moves forward from the working position to the transition position, the second support portion 372 leaves the spring portion 41, and the first support portion 371 moves to a position matching the spring portion 41, the spring portion 41 reduces elastic deformation (the amount of elastic deformation decreases), and the force applied downward by the two spring portions 41 of the buckle 4 to the heat sink 3 is reduced from the working load force to the transition load force. When the pluggable module 200 is completely withdrawn from the plug-in channel 115 and loses contact with the thermal coupling portion 32 of the heat sink 3, the heat sink 3 moves downward from the transition position to the initial position due to the force of the spring portion 41, and the spring portion 41 further reduces its elastic deformation. The force applied downward by the two spring portions 41 of the fastener 4 to the heat sink 3 is reduced from the transition load force to the pre-load force.

In the first insertion stage, the pluggable module 200 moves a relatively long distance relative to the thermal coupling portion 32 of the heat sink 3 it contacts. At this time, the transition load force applied downward by the two spring portions 41 of the clip 4 to the heat sink 3 is relatively small, thereby reducing the contact pressure between the heat sink 3 and the surface of the pluggable module 200 at this stage, thereby reducing the friction resistance during the insertion of the pluggable module 200 and reducing the possibility of wear of the thermal coupling portion 32 of the heat sink 3 and its thermal interface material.

In the second insertion stage, the pluggable module 200 has completely contacted the thermal coupling portion 32 of the heat sink 3, and in this stage when the pluggable module 200 starts to push the pushed portion 33 of the heat sink 3, the thermal coupling portion 32 of the heat sink 3 contacts the upper surface of the pluggable module 200 and moves together with the pluggable module 200 to finally complete the plugging. In this process, there is no relative movement between the heat sink 3 and the pluggable module 200, so there is no friction generated by the relative movement between the two. In this way, when the transition load force applied by the two spring portions 41 of the clip 4 is increased to the working load force, the thermal coupling portion 32 of the heat sink 3 and the thermal interface material thereof can be prevented from being worn and damaged. Furthermore, when designing the working load force that the clip 4 can apply, it is not necessary to consider the wear problem of the thermal coupling portion 32 of the heat sink 3 and the thermal interface material thereof, so the working load force that the clip 4 can apply can be designed to be larger to improve the heat conduction efficiency and increase the heat dissipation effect. In addition, since the moving distance of the second insertion stage is relatively short, the transition load force applied by the two spring portions 41 of the clip 4 can be increased to the working load force within the relatively short moving distance.

In summary, the present invention can provide a smaller transition load force in the first insertion stage of the plugging process by the two-stage movement of the heat sink 3 and the two-stage change of the applied force of the clip 4, reduce the contact pressure between the heat sink 3 and the surface of the pluggable module 200 in this stage, so as to reduce the friction resistance in the insertion process, and provide a larger working load force when the plugging is completed (after the second insertion stage of the plugging process) to improve the heat conduction efficiency and increase the heat dissipation effect. Furthermore, in the structure where the heat sink 3 includes a thermal interface material, the possibility of damage to the thermal interface material can be reduced.

However, the above is only an example of the implementation of the present invention, and it cannot be used to limit the scope of the implementation of the present invention. All simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still within the scope of the patent of the present invention.

100: Connector assembly 1: Guide shield 11: Cover 111: Top wall 111a: Window 111b: Opening 111c: Guide part 111d: Stopper 112: Bottom wall 113: Side wall 113a: Snap-on block 113b: Opening 113c: Inner spring 114: Rear wall 114a: Return spring 115: Plug channel 115a: Front socket 115b: Bottom opening 116: Pin 12: Grounding piece 121: Elastic finger 2: Socket connector 21: Shell 211: Docking slot 22: Terminal 221: Contact part 222: Tail 3: Heat sink 31: Base plate 32: Thermal coupling part 321: Guide slope 33: Pushing part 34: Reset spring action part 35: Heat sink fin 36: Spacing groove 37: Spring support structure 371: First support part 372: Second support part 4: Buckle 41: Spring part 411: Connecting arm 412: Avoidance groove 413: Stop flange 42: Buckle part 421: Buckle hole 200: Plugable module 201: Housing 201a: Plug part 201b: Buckle groove 201c: Guide groove structure 201d: Alignment structure 202: Plug-in circuit board 203: Cable 204: Unlocking piece D1: Front and back direction D2: Up and down direction D3: Left and right direction

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a stereoscopic diagram of an embodiment of the connector assembly of the present invention and a pluggable module; Figure 2 is a stereoscopic exploded diagram of the embodiment, in which a socket connector of the embodiment is omitted; Figure 3 is a partially cut stereoscopic diagram of the embodiment, in which a socket connector of the embodiment is omitted; Figure 4 is a stereoscopic exploded diagram similar to Figure 2, in which a heat sink and a fastener of the embodiment are turned at an angle to show the bottom surface; Figure 5 is a partially cut partial stereoscopic diagram of the embodiment; Figure 6 is a partially cut partial stereoscopic exploded diagram of Figure 5; Figure 7 is a top view of the embodiment; Figure 8 is a cross-sectional view taken along the A-A line in Figure 7, in which the heat sink of the embodiment is located in an initial position; FIG9 is a cross-sectional view similar to FIG8 , in which the pluggable module is inserted into a plug-in channel of a guide shielding cover of the embodiment at a first insertion stage, and the heat sink is located at a transition position; FIG10 is a partial three-dimensional view of the embodiment and the pluggable module in a partial section, in which the pluggable module is inserted into the plug-in channel of the guide shielding cover of the embodiment at a second insertion stage; FIG11 is a cross-sectional view similar to FIG8 , in which the pluggable module is inserted into the plug-in channel of the guide shielding cover of the embodiment at a second insertion stage, and the heat sink is located at a working position.

100: Connector assembly

1: Guide shield cover

11: Mask body

111: Top wall

111a: Window

111b: Opening

112: Bottom wall

114: Back wall

114a:Reset spring

115: Plug-in channel

115a: Front socket

115b: Bottom opening

2: Socket connector

21: Shell

211: Docking slot

22: Terminals

222: Tail

3: Radiator

31: Substrate

32: Thermal coupling unit

321:Guide slope

33: Pushing part

34: Return spring action part

35: Heat sink fins

36: Spacing groove

37: Spring support structure

371: The first support

372: Second support

41: Spring part

411: Connecting arm

412: Avoidance slot

413: Stop flange

200: Pluggable module

201: Shell

201a: Plug-in part

202: Plug in circuit board

D1: front and back direction

D2: Up and down direction

D3: Left and right direction

Claims (10)

A connector assembly comprises: A guide shield having a plug-in channel and a return spring; A heat sink having a base plate, a heat coupling portion and a push portion extending downward from the base plate and extending into the plug-in channel, and a spring support structure facing upward, the spring support structure having a first support portion and a second support portion, the return spring of the guide shield acting elastically forward on the heat sink; and A clip for assembling the heat sink to the guide shield, the clip having a spring portion of the spring support structure that applies an elastic force downward on the heat sink, Wherein, when the pushed portion has not been pushed, the heat sink can be moved from the lower initial position to the upper transition position relative to the guide shield, the first support portion of the heat sink cooperates with the spring portion of the clip, and the spring portion applies a downward transition load force to the heat sink; when the pushed portion is pushed backward, the heat sink can move backward to the rear working position relative to the guide shield, the second support portion of the heat sink moves to the spring portion that cooperates with the clip, and the spring portion applies a downward working load force to the heat sink; wherein the working load force is greater than the transition load force. A connector assembly as described in claim 1, wherein the first supporting portion is configured as a supporting recessed portion that is concave downward, and the second supporting portion is configured as a supporting protrusion that is protruding upward. A connector assembly as described in claim 2, wherein the spring portion has an avoidance groove; when the first support portion of the heat sink cooperates with the spring portion of the clip, a portion of the second support portion is accommodated in the avoidance groove, and another portion of the second support portion is staggered with the spring portion; when the second support portion of the heat sink cooperates with the spring portion of the clip, the second support portion moves below the bottom surface of the spring portion and lifts up the spring portion. A connector assembly as described in claim 1, wherein the guide shielding cover also has two side walls, the fastener has two fastening portions respectively fastened to the two side walls of the guide shielding cover, the spring portion extends laterally, and the spring portion has two connecting arms extending laterally and obliquely upward and respectively connected to the two fastening portions. A connector assembly as described in claim 1, wherein the heat sink also has a heat sink fin protruding upward, and a spacing groove formed between the heat sink fins and extending laterally, and the spring support structure is constructed on the bottom surface of the spacing groove. A connector assembly as described in claim 1, wherein the guide shielding cover also has a top wall, the top wall is formed with a window connected to the plug-in channel, and an opening connected to the plug-in channel and located behind the window, the pushed portion of the heat sink is located behind the thermal coupling portion, the heat sink also has a return spring action portion extending downward from the substrate and located behind the pushed portion, the thermal coupling portion extends into the plug-in channel through the window, the pushed portion and the return spring action portion extend into the plug-in channel through the opening, and the return spring of the guide shielding cover elastically acts forward on the return spring action portion of the heat sink. A connector assembly as described in claim 6, wherein the guide shield cover also has a rear wall, and the return spring of the guide shield cover is integrally constructed on the rear wall. A connector assembly as described in claim 1, wherein the spring portion has a stop flange located at the front edge, and the stop flange is provided for the heat sink to lean backward to limit the heat sink in the rearward direction. A connector assembly as described in claim 1, wherein the thermal coupling portion of the heat sink includes a thermal interface material. A connector assembly as described in claim 1, wherein the connector assembly is suitable for plugging with a pluggable module, when the pluggable module has not yet been inserted into the plug-in channel of the guide shielding cover, the pushed portion has not yet been pushed, the heat sink is located at the initial position at the bottom, the first support portion cooperates with the spring portion, the second support portion is staggered with the spring portion, and the spring portion applies a downward preload force to the heat sink; when the pluggable module is in the first insertion stage before being inserted into the plug-in channel of the guide shielding cover and pushing the pushed portion of the heat sink, the pluggable module lifts the heat sink upward to the transition position, and the first support portion lifts the heat sink upward. The spring portion is elastically deformed, and the spring portion applies a downward transition load force to the heat sink; when the pluggable module is inserted into the plug-in channel of the guide shielding cover and pushes the pushed portion of the heat sink backward, the heat sink moves backward to the working position, and the heat sink acts backward on the reset spring, and the second supporting portion moves below the bottom surface of the spring portion and further lifts the spring portion, and causes the spring portion to be further elastically deformed, and the spring portion applies a downward working load force to the heat sink, wherein the working load force is greater than the transition load force and greater than the pre-load force.