An electrical connector assembly

Abstract

An electrical connector assembly is used for fixing to a circuit board and realizing signal transmission with a mating connector, the electrical connector assembly comprises at least one terminal module, the terminal module comprises an insulating body and a plurality of signal terminals fixed with the insulating body, a metal shell, the metal shell is covered on the outer periphery of the at least one terminal module, the at least one terminal module and the metal shell jointly define at least two plug spaces, each plug space extends along the plug direction of the mating connector and forms a plug-in entrance for the mating connector, and the at least two plug spaces are arranged along the direction parallel to the circuit board, the metal shell comprises two side plates located between the at least two plug spaces, and the two side plates form a spacing space, so that the heat dissipation performance is better.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communication transmission, and more particularly, to an electrical connector assembly.

BACKGROUND

[0002] A Gigabit Interface Converter (GBIC) is a hot-swappable input / output device that plugs into a Gigabit Ethernet port / slot, and is responsible for connecting the port with fiber optic network. GBICs can be used and interchanged on a variety of Cisco products and can be mixed on a port-by-port basis with 1000BaseSX, 1000BaseLX / LH or 1000BaseZX interfaces that comply with IEEE 802.3z. Further, Cisco is offering a 1000BaseLX / LH interface that fully complies with the IEEE 802.3z 1000BaseLX standard, but has a 10-kilometer reach over single-mode fiber, 5 kilometers farther than the standard 1000BaseLX interface. In summary, as new functionality is developed, these modules will be easily upgradeable to the latest interface technology, thus maximizing the customer's investment.

[0003] These traditional plug-in designs have been successful in the past, but they tend to fall short of the industry's continuing goal of miniaturization. It is desirable to miniaturize the transceiver to increase the port density associated with network connections such as power distribution units, cable distribution panels, wiring closets, and computer input / output (I / O). Conventional plug-in module construction cannot meet these parameter needs.

[0004] A new standard has been published and is referred to herein as the Small Form-factor Pluggable (SFP) standard. SFP is an acronym for Small Form-factor Pluggable and can be simply understood as an upgrade to the GBIC. The SFP module is approximately one-half the size of the GBIC module and allows for more than one time the number of ports to be configured on the same faceplate. The SFP module is otherwise functionally identical to the GBIC. Some switch vendors refer to the SFP module as a mini-GBIC.

[0005] At present, it has developed to QSFP-DD (Quad Small Form-factor Pluggable Double Density) stage, and the QSFP-DD specification has been published, which defines a high-speed communication module with eight channels. Each channel runs at a rate of 25Gbit / s or 50Gbit / s, so the QSFP-DD module supports 200Gbit / s or 400Gbit / s rate Ethernet applications. While the rate is increasing, it is also tending to be miniaturized. Such SFP, QSFP is fixed to the circuit board, and the cooperation with the circuit board and the space utilization rate are also the design of the design, which can improve the utilization rate of the internal space of the electronic equipment, improve the integration, in addition, with the continuous improvement of the transmission rate, the heat dissipation design requirement of the product itself is also higher and higher, and the traditional design can not meet the increasing performance requirements.

[0006] Therefore, it is necessary to improve such an interface connector in the prior art to overcome the defects in the prior art. SUMMARY

[0007] The purpose of the present application is to provide a new electrical connector assembly with better heat dissipation performance.

[0008] In order to achieve the above purpose, the present application realizes the following technical scheme:

[0009] An electrical connector assembly for fixing to a circuit board and realizing signal transmission with a mating connector, the electrical connector assembly comprising:

[0010] At least one terminal module, the terminal module comprising an insulating body and a plurality of signal terminals fixed to the insulating body,

[0011] A metal shell covering the outer periphery of the at least one terminal module,

[0012] The at least one terminal module and the metal shell jointly define at least two plug-in spaces, each of the plug-in spaces extending along the plug-in direction of the mating connector and forming a plug-in opening for the mating connector to be inserted, and the at least two plug-in spaces being arranged along a direction parallel to the circuit board,

[0013] The metal shell comprises two side plates located between the at least two plug-in spaces, and the two side plates form a spacing space therebetween.

[0014] Further, air holes are formed through the two side plates, and the air holes communicate the spacing space with the plug-in spaces.

[0015] Further, the spacing space continuously extends from one end edge of the metal shell to the other end edge along the plug-in direction of the mating connector.

[0016] Furthermore, the electrical connector assembly also includes a top heat dissipation module, which is fixed to the side of the metal housing away from the circuit board. The top heat dissipation module forms mating holes at corresponding interval positions along the thickness direction of the circuit board. The mating holes communicate with the interval spaces and penetrate the top heat dissipation module along the thickness direction of the circuit board.

[0017] Furthermore, the electrical connector assembly also includes a heat sink bracket, which presses and fixes the top heat sink module to the metal casing along the thickness direction of the circuit board, and the heat sink bracket is fixed to the metal casing at both ends along the arrangement direction of at least two of the insertion and removal spaces.

[0018] Furthermore, the electrical connector assembly also includes a metal component disposed within the space, wherein the metal component extends to the side away from the circuit board and forms a snap fastener, the snap fastener corresponding to and being fixed to the heat sink bracket snap fastener.

[0019] Furthermore, the metal component contacts the two side plates along the arrangement directions of at least two of the spaced intervals.

[0020] Furthermore, the local positions of the metal parts extend along the arrangement directions of at least two of the spaced spaces and further extend away from the circuit board to form a plurality of elastic arms, which elastically contact the side plate.

[0021] Furthermore, the side plate forms a stop portion at the free end of the spring arm, and the free end of the spring arm stops upward at the stop portion.

[0022] Furthermore, the metal part is bent at the position near the insertion port in the space to form a support plate. The support plate supports the side plate along the arrangement direction of at least two of the spacers. A plurality of through holes are formed on the support plate along the insertion and removal direction of the mating connector.

[0023] Furthermore, the metal part extends into the insertion direction of the mating connector from the position near the insertion port in the space to form an elastic arm, and the elastic arm is simply supported and elastically contacts the corresponding side plate.

[0024] Furthermore, at least one of the metal parts is provided in the same space, and the total length of the metal parts in the same space along the insertion / removal direction of the connector is not less than half the length of the space along the insertion / removal direction of the connector.

[0025] Furthermore, the terminal module includes at least two, the metal casing includes at least two, and each insertion / removal space is formed by a terminal module and a metal casing corresponding to that terminal module.

[0026] Furthermore, the electrical connector assembly also includes a metal frame, which is fixed to the lower edge of the metal housing. The two side plates located between adjacent insertion and extraction spaces and the metal frame together define a gap space, and the lower edge of the metal component is at least partially supported by the metal frame.

[0027] Furthermore, the metal frame forms a latching hole through the vertical direction at the space interval, and the metal part extends downward to form a latching arm corresponding to the latching hole. The latching arm passes through the latching hole and engages with the side of the metal frame near the circuit board.

[0028] Furthermore, the metal casing has a rear end plate formed at the end away from the insertion port along the insertion direction of the mating connector. The rear end plate forms a vent hole through the mating connector along the insertion direction, and the vent hole connects the space to the outside.

[0029] Furthermore, the terminal module is located at the end of the metal housing away from the insertion port, along the pull-out direction of the mating connector. The rear end plate is located behind the terminal module and forms a gap with the terminal module at least partially. The rear end plate forms a vent hole through the mating connector along the insertion / pull-out direction, and the vent hole connects the gap to the outside.

[0030] Furthermore, each of the aforementioned insertion and removal spaces mates with a plurality of the aforementioned signal terminals, and among the plurality of signal terminals mates with each of the aforementioned insertion and removal spaces, at least one pair of high-speed terminals for transmitting high-speed differential signals is included. The electrical connector assembly is one of an SFP socket connector, a QSFP socket connector, a QSFP-DD socket connector, or a CXP socket connector.

[0031] Compared with the prior art, this application has the following advantages: it has excellent heat dissipation performance. [Attached Image Description]

[0032] Figure 1 This is a perspective view of the electrical connector assembly of this application;

[0033] Figure 2 This is a perspective view of the electrical connector assembly of this application from another angle;

[0034] Figure 3 This is a partial exploded perspective view of the electrical connector assembly of this application, showing a perspective view of the top heat dissipation module, metal parts and heat sink bracket after being separated from the metal housing, and further, the metal parts and heat sink bracket cooperate with each other.

[0035] Figure 4 yes Figure 3 A further exploded perspective view of the electrical connector assembly shown, which is in Figure 3Based on this, a three-dimensional schematic diagram of the metal parts being separated from the heat sink bracket is further shown;

[0036] Figure 5 This is a partial exploded perspective view of the electrical connector assembly of this application, which shows a perspective view of the heat sink bracket, top heat sink module, circuit board and rear heat sink module after being separated from the metal casing.

[0037] Figure 6 This is a partial exploded perspective view of the electrical connector assembly of this application;

[0038] Figure 7 This is a partial exploded perspective view of the electrical connector assembly of this application. It mainly shows a perspective view of the socket spring and socket metal parts after they are separated from the metal housing. In addition, the metal frame, the rear heat dissipation module, the top heat dissipation module and the circuit board have been removed.

[0039] Figure 8 This is a partial exploded perspective view of the electrical connector assembly of this application, which mainly shows the socket spring, socket metal part, metal frame and a perspective view of one of the spring components after being separated from the metal cover. In addition, the metal frame, rear heat dissipation module, top heat dissipation module and circuit board have been removed.

[0040] Figure 9 This is a partial exploded perspective view of the electrical connector assembly of this application, which mainly shows the socket spring, three spring components, and a perspective view of one of the connector modules after being separated from the metal frame. In addition, the metal frame, the rear heat dissipation module, the top heat dissipation module, and the circuit board have been removed.

[0041] Figure 10 This is a partial exploded perspective view of the electrical connector assembly of this application. It mainly shows the socket spring, three spring components, two connector modules, and a metal part after being separated from the metal frame. Furthermore, it shows the mating relationship between a metal part and a corresponding metal housing. In addition, the metal frame, the rear heat dissipation module, the top heat dissipation module, and the circuit board have been removed.

Detailed Implementation Methods

[0042] It should be noted that, unless otherwise expressly specified and limited, the embodiments and features described in the application can be combined with each other. Furthermore, unless otherwise explicitly stated and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the application based on the specific circumstances.

[0043] In the description of the application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0044] Furthermore, for the sake of accuracy in this application, all directions mentioned herein shall be referred to as... Figure 1 For reference, the X-axis extends in the left-right direction (that is, the arrangement direction of each of the insertion and removal spaces 10, where the positive X-axis direction is to the right); the Y-axis extends in the front-back direction (that is, the insertion and removal direction of the mating connector, where the positive Y-axis direction is backward); and the Z-axis extends in the up-down direction (that is, the thickness direction of the circuit board 200, where the positive Z-axis direction is upward). This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] Please refer to Figures 1 to 10 As shown, this application discloses an electrical connector assembly for signal transmission with at least one mating connector (not shown). The electrical connector assembly includes a circuit board 200, an electrical connector module (not labeled) fixed to the upper surface of the circuit board 200, a top heat dissipation module 5, and a rear heat dissipation module 7. The top heat dissipation module 5 is fixed to the upper surface of the electrical connector module, and the rear heat dissipation module 7 is fixed to the lower surface of the circuit board 200 and is capable of heat conduction with the electrical connector module.

[0046] Please refer to Figure 8 As shown, the electrical connector module includes a terminal module 1, a metal housing 2, a metal component 3, and a metal frame 4. The terminal module 1 includes an insulating body 11 and a plurality of signal terminals 12 fixed to the insulating body 11. Each signal terminal 12 includes a fixing part (not labeled) fixed within the insulating body 11, a contact part (not labeled) extending forward from the fixing part out of the insulating body 11, and a mating part (not labeled) extending downward from the fixing part out of the insulating body 11. The contact part is used to mate with a mating connector to achieve signal transmission. The mating part is electrically connected to the circuit board 200 to achieve signal transmission with the metal traces (not shown) on the circuit board 200.

[0047] Please refer to Figure 10As shown, the metal casing 2 covers the outer periphery of the terminal module 1. The metal casing 2 includes two side plates 21 extending in the front-back and vertical directions, a top plate 22 extending in the front-back and horizontal directions, and a rear end plate 23 extending in the vertical and horizontal directions. The top plate 22 connects to the upper edges of the two side plates 21, and the rear end plate 23 connects to the rear end edge of the top plate 22 and is snapped to the outer side of the rear end position of the two side plates 21 to form a cuboid-like three-sided structure. The top plate 22 is substantially parallel to the upper surface of the circuit board 200.

[0048] Please refer to Figures 1 to 4 As shown, the terminal module 1 and the metal housing 2 together define a insertion space 10 extending in the front-to-back direction and form an insertion port 101 for inserting a mating connector. The contact portion of the signal terminal 12 is exposed within the insertion space 10. In this application, there are four independent terminal modules 1, four independent metal housings 2, and four independent metal parts 3. Of course, in another embodiment, the terminal modules 1 can also be designed to be integrally disposed directly or indirectly at a local location, for example, partially integrally connected at the rear end of the insulating body 11, or fixed integrally with the insulating bodies 11 of the four terminal modules 1 by another independent component (not shown), or other similar designs.

[0049] Please refer to Figures 8 to 10 As shown, the four metal housings 2 are arranged in a left-right direction, with a gap 20 formed between adjacent metal housings 2. Specifically, the gap 20 is formed by the gap between adjacent side plates 21 of adjacent metal housings 2. The metal frame 4 is formed by metal powder die casting and includes a side frame part 401 fixed to the lower edge of the side plate 21 of the metal housing 2, a rear frame part 402 connected to the rear edge of the side frame part 401, and a bottom plate member 403 connecting the front ends of adjacent side frame parts 401. The bottom plate member 403 is located below the corresponding insertion and removal space 10.

[0050] Please refer to Figures 8 to 10As shown in this application, the side plates 21 of each metal casing 2 are fixed to the side frame portion 401. Specifically, a latching plate 214 extends from the lower edge of the side plate 21 of the metal casing 2, and a latching hole 42 is formed at the corresponding position of the side frame portion 401, which extends through in the vertical direction. The latching plate 214 of the metal casing 2 passes through the latching hole 42 and is fastened to the lower surface of the side frame portion 401. Further, in this application, the side frame portion 401 includes a main body portion 4011 and wings 4012 extending to the left and right from the left and right sides of the main body portion 4011 near the lower position (near the circuit board 200). The latching hole 42 is formed at the position of the wing portion 4012 adjacent to the main body portion 4011, and the lower position of the side plate 21 is correspondingly attached to the left and right sides of the main body portion 4011. The gap 20 is formed between the main body 4011 of the metal frame 4 and the two side plates 21 of the adjacent main body 4011.

[0051] Please combine Figures 1 to 4 As shown, the metal part 3 is fixedly disposed in the gap 20. In this application, the metal part 3 is formed by stamping and bending a metal plate. A portion of the metal part 3 extends to the left and right and further extends upward to form a spring arm 31, which elastically supports the side plate 21. The side plate 21 forms a stop portion 211 at the free end of the spring arm 31, and the free end of the spring arm 31 stops upward at the stop portion 211. The side frame portion 401 forms a latching hole 41 (specifically, the latching hole 41 is formed on the main body portion 4011) through the gap 20 in the vertical direction. The metal part 3 extends downward to form a latching arm 34 corresponding to the latching hole 41. The latching arm 34 passes through the latching hole 41 and engages with the side of the side frame portion 401 near the circuit board 200. In this application, the lower edge of the metal part 3 and / or the spring arm portion 31 of the metal part 3 are supported on the side frame portion 401 (specifically the upper surface of the main body portion 4011).

[0052] Please combine Figures 1 to 4 As shown in this application, the metal part 3 is bent at the position of the space 20 near the insertion port 101 to form a support plate 32. At least a portion of the structure of the support plate 32 extends in the left-right and up-down directions. The support plate 32 supports the side plate 21 in the left-right direction. A plurality of through holes 320 are formed through the support plate 32 in the front-back direction for air circulation and heat dissipation. The metal part 3 is bent at the position of the space 20 near the insertion port 101 to form an elastic arm 33 extending in the insertion direction of the mating connector. The elastic arm 33 is simply supported and elastically abuts against the corresponding side plate 21.

[0053] The spacer space 20 extends continuously from one end of the metal casing 2 to the other in the front-to-back direction (specifically, from one end of the connector module to the other in this embodiment). In other words, the spacer space 20 passes through the connector module in the front-to-back direction, forming an air duct and improving the heat dissipation of the connector module. At least one metal component 3 is provided within the same spacer space 20, and the total length of all metal components 3 within the same spacer space 20 in the front-to-back direction is not less than half the length of the spacer space 20 along the insertion / removal direction of the mating connector.

[0054] Please combine Figure 3 , Figure 4 and Figure 10 As shown in this application, the metal part 3 extends downward (towards the circuit board 200) near the insertion port 101 to form a fastener 35 (specifically, the fastener 35 is formed by further extending downward from the lower edge of the support plate 32). The metal frame 4 forms a fastener 42 corresponding to the position of the fastener. The fastener 35 and the fastener 42 are fastened together to achieve mutual limiting in the up-down direction and / or left-right direction.

[0055] Please combine Figures 6 to 10 As shown in this application, the electrical connector assembly further includes a socket metal piece 9. Along the pull-out direction of the mating connector, the socket metal piece 9 is disposed in front of the base plate component 403. The two sides of the socket metal piece 9 are spliced ​​and fixed or snapped to the two side plates 21 of the metal cover 2. The socket metal piece 9 and the metal cover 2 are basically flush with the end edge of the insertion port 101. The socket metal piece 9, the top plate 22 and the side plates 21 are fixedly provided with socket spring pieces 24 at the end edge of the insertion port 101. The socket spring pieces 24 form an inner spring piece 241 extending into the insertion space 10 and an outer spring piece 242 extending outward from the insertion space 10.

[0056] Please combine Figures 6 to 10 As shown, further, in this application, the side frame portion 401, rear frame portion 402 and bottom plate component 4 of the metal frame 4 under the same metal housing 2 form a frame shape and a relief opening 300 is formed in the middle. The terminal module 1 is disposed at the relief opening 300 position. The signal terminal 12 docking portion extends downward and protrudes out of the insulating body 11 through the relief opening 300 for docking with the circuit board 200 to realize signal transmission.

[0057] Furthermore, in this application, a plurality of signal terminals 12 of the same terminal module 1 are arranged in two rows along the vertical direction, and at least one row of the signal terminals includes at least one pair of high-speed terminals for transmitting high-speed differential signals. The electrical connector assembly is actually one of SFP socket connector, QSFP socket connector, QSFP-DD socket connector, or CXP socket connector.

[0058] Please refer to Figure 8 , Figure 9 and Figure 10 As shown in this application, the side plate 21 forms a vent 215 through the left and right directions. The metal casing 2 also includes a rear end plate 23 extending along the thickness direction of the circuit board 200 and the arrangement direction of the two insertion / removal spaces 10 (the rear end plate 23 is actually formed by bending the rear end edge of the top plate 22 downwards). The rear frame portion 402 of the metal frame 4 is located behind the terminal module 1, and the rear end plate 23 is located behind the rear frame portion 402, so that a gap 102 is formed between the rear end plate 23 and the terminal module 1 above the rear frame portion 402. The rear end plate 23 forms a vent (not shown) through the insertion / removal direction of the mating connector.

[0059] In this application, the electrical connector assembly further includes a top heat dissipation module 5, which is fixed to the outer surface of the top plate 22 of the metal housing 2. The top heat dissipation module 5 has a mating hole 51 that communicates with the interval space 20 at the corresponding interval space 20 position along the thickness direction of the circuit board 200.

[0060] Please combine Figures 1 to 6 As shown, the electrical connector assembly also includes a heat sink bracket 6, which straddles the top heat dissipation module 5 along the arrangement direction of the two insertion spaces 10. The heat sink bracket 6 forms latching arms 61 extending towards the circuit board 200 at both ends along the arrangement direction of the two insertion spaces 10. The latching arms 61 are correspondingly fastened to the outside of the two side plates 21 at both ends of the metal cover 2 along the arrangement direction of the two insertion spaces 10. The metal part 3 extends to the side away from the circuit board 200 and forms a buckle 36, which is correspondingly fastened and fixed to the heat sink bracket 6.

[0061] Please combine Figures 1 to 6 As shown in this application, the rear heat dissipation module 7 includes a rear portion 71 and a thickened portion 72 that abut against the lower surface of the circuit board 200. Heat conduction is achieved at least partially between the electrical connector module and the rear heat dissipation module 7. Specifically, the circuit board 200 forms at least partially recessed clearance holes 201 along the vertical direction at positions corresponding to the connector module. Specifically, along the front-rear direction, the clearance holes 201 are located at the front end of the circuit board 200 (near the insertion port 101). The clearance holes 201 penetrate the thickness direction of the circuit board 200 and are open forward. The electrical connector module and the rear heat dissipation module 7 overlap through the clearance holes 201 to achieve heat conduction. More specifically, the electrical connector assembly also includes a spring contact member 8, which is fixed to the base plate member 403 of the metal frame 4.

[0062] Please combine Figures 6 to 10As shown, the spring member 8 includes an inner side plate 801 abutting against the upper surface (the side surface away from the circuit board 200) of the base plate member 403 and an outer side plate 802 abutting against the lower surface (the side surface near the circuit board 200) of the base plate member 403. The inner side plate 801 and the outer side plate 802 are arranged opposite each other in the vertical direction and are connected as one piece at the front edge position. The base plate member 403 is clamped between the inner side plate 801 and the outer side plate 802. A portion of the inner side plate 801 extends from front to back through stamping and bending to form an inner spring arm 81. The inner spring arm 81 protrudes into the insertion and extraction space 10 to contact the mating connector to achieve heat conduction, and at the same time realize the effective insertion and extraction force between the mating connector and the electrical connector assembly. A portion of the outer side plate 802 extends from front to back through stamping and bending to form an outer elastic arm 82. The outer elastic arm 82 is used to elastically overlap with the rear heat dissipation module 7 to achieve heat conduction. Specifically, the thickened portion 72 at least partially protrudes into the clearance hole 201 and overlaps with the outer elastic arm 82 to achieve heat conduction. In this configuration, the inner elastic arm 81 and / or the outer elastic arm 82 extend in the insertion direction of the mating connector in a cantilevered or simply supported shape.

[0063] Please refer to the image. Figure 2 , Figure 5 class Figure 6 As shown, the electrical connector assembly also includes several fixing pins 202. These fixing pins 202 pass through the rear heat dissipation module 7 and the circuit board 200, integrally fixing the rear heat dissipation module 7, the circuit board 200, and the metal frame 4. Specifically, the fixing pins 202 are threadedly locked to the side frame portion 401 of the metal frame 4. A portion of the metal frame 4 located outside the metal housing 2 is fixed to the circuit board 200 by bolts (not labeled). In this application, the metal housing 2 is a die-cast metal part, and a portion of the metal housing 2 can be manufactured to have a relatively thick thickness, exhibiting high plasticity. This allows the electrical connector assembly, at least on one side of the circuit board 200, to have strong structural strength and better heat dissipation. In particular, the design of the base plate component 403 allows the high-heat-generating parts on the mating connector to effectively conduct and dissipate heat through the base plate component 403.

[0064] Because the metal component 3 conducts heat faster, in accordance with the design of this application, the metal component 3 is placed within the space 20 and contacts the side plate 21 of the metal casing 2 and the side frame 401 of the metal frame 4 through multiple points. Simultaneously, it cooperates with the through hole 320 on the support plate 32, the vent holes 215 on the side plate 22 and the rear end plate 23, and the mating hole 51 on the top heat dissipation module 5. This ensures a large metal heat dissipation area while allowing air circulation, resulting in excellent heat dissipation. Furthermore, for even better heat dissipation, the rear heat dissipation module 7 conducts heat with the metal frame 4, and the area of ​​the rear heat dissipation module 7 and the electrical connector assembly stacked and bonded together along the vertical direction is greater than half the total area of ​​the electrical connector assembly along the extension direction of the circuit board 200. By partially designing the rear heat dissipation module 7 to be bonded to the lower surface of the circuit board 200, the effective heat dissipation area of ​​the rear heat dissipation module 7 can be maximized without increasing the area occupied by the electrical connector assembly on the circuit board, achieving better heat dissipation.

[0065] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

[0066] The above description is only a partial embodiment of this application, not all of the embodiments. Any equivalent changes made by those skilled in the art to the technical solution of this application by reading this application specification shall be covered by the claims of this application.

Claims

1. An electrical connector assembly for fixing to a circuit board and transmitting signals with a mating connector, the electrical connector assembly comprising: At least two terminal modules, each terminal module including an insulating body and a plurality of signal terminals fixed to the insulating body; At least two metal housings, each of which is correspondingly disposed on the outer periphery of the terminal module; Each of the terminal modules and the corresponding metal housing together define a plug-in space. Each plug-in space extends along the plugging direction of the mating connector and forms an insertion port for the mating connector to be inserted. The two plug-in spaces are arranged in a direction parallel to the circuit board. The feature is that: each of the metal housings includes two side plates located between the two insertion / removal spaces, and a gap space is formed between the two side plates; A metal frame, with at least two of the metal housings fixed to the metal frame; The top heat dissipation module is fixed to the side of the metal casing away from the circuit board; Metal components are disposed within the spaced space; A heat sink bracket straddles the top heat sink module and presses and fixes the top heat sink module to the metal casing along the thickness direction of the circuit board. The two ends of the heat sink bracket are correspondingly snapped and fixed to the metal casing along the arrangement direction of at least two of the insertion and removal spaces. The upper end of the metal part extends to form a buckle, which is fixed to the heat sink bracket, and the lower end of the metal part is fixed to the metal frame.

2. The electrical connector assembly as claimed in claim 1, characterized in that: Ventilation holes are formed through the two side plates, which connect the interval space and the insertion / removal space.

3. The electrical connector assembly as claimed in claim 1, characterized in that: The gap extends continuously from one end edge of the metal housing to the other end edge along the insertion and removal direction of the mating connector.

4. The electrical connector assembly as claimed in claim 1, characterized in that: The top heat dissipation module forms mating holes at corresponding interval positions along the thickness direction of the circuit board. The mating holes are connected to the interval spaces and penetrate the top heat dissipation module along the thickness direction of the circuit board.

5. The electrical connector assembly as described in any one of claims 1 to 4, characterized in that: The metal component contacts the two side plates along the arrangement directions of at least two of the spaced intervals.

6. The electrical connector assembly as claimed in claim 5, characterized in that: The metal parts extend along the arrangement directions of at least two of the spaced spaces and further extend away from the circuit board to form a plurality of spring arms, which elastically contact the side plate.

7. The electrical connector assembly as claimed in claim 6, characterized in that: The side plate forms a stop portion at the free end of the spring arm, and the free end of the spring arm stops upward at the stop portion.

8. The electrical connector assembly as claimed in any one of claims 1 to 4, characterized in that: The metal part is bent at the position of the insertion port in the space to form a support plate. The support plate supports the two side plates along the arrangement direction of at least two of the spacers. A plurality of through holes are formed on the support plate along the insertion and removal direction of the mating connector.

9. The electrical connector assembly as claimed in claim 8, characterized in that: The metal part extends into the insertion direction of the connector in the space near the insertion port to form an elastic arm, and the elastic arm is simply supported and elastically contacts the corresponding side plate.

10. The electrical connector assembly as claimed in any one of claims 1 to 4, characterized in that: At least one metal component is provided within the same space, and the total length of the metal components within the same space along the insertion / removal direction of the connector is not less than half the length of the space along the insertion / removal direction of the connector.

11. The electrical connector assembly as claimed in any one of claims 1 to 4, characterized in that: The two side plates located between adjacent insertion and removal spaces and the metal frame together define the space, and the lower edge of the metal component is at least partially supported by the metal frame.

12. The electrical connector assembly as claimed in claim 11, characterized in that: The metal frame forms a latching hole through the spaced area in the vertical direction. The metal part extends downward to form a latching arm corresponding to the latching hole. The latching arm passes through the latching hole and engages with the side of the metal frame near the circuit board.

13. The electrical connector assembly as claimed in any one of claims 1 to 4, characterized in that: The metal casing has a rear end plate formed at the end away from the insertion port along the insertion direction of the connector. The rear end plate forms a vent hole along the insertion direction of the connector, and the vent hole connects the space to the outside.

14. The electrical connector assembly as claimed in claim 13, characterized in that: The terminal module is located at the end of the metal housing away from the insertion port, along the pull-out direction of the mating connector. The rear end plate is located behind the terminal module and forms a gap with the terminal module at least partially. The rear end plate extends through the mating connector along the insertion / pull-out direction to form a vent hole, which connects the gap to the outside.

15. The electrical connector assembly as claimed in any one of claims 1 to 4, characterized in that: Each of the aforementioned insertion and removal spaces mates with a plurality of the aforementioned signal terminals, and among the plurality of signal terminals mates with each of the aforementioned insertion and removal spaces, at least one pair of high-speed terminals for transmitting high-speed differential signals is included. The electrical connector assembly is one of an SFP socket connector, a QSFP socket connector, a QSFP-DD socket connector, or a CXP socket connector.

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