An electrical connector and electrical connector assembly

Abstract

An electrical connector and an electrical connector assembly, the electrical connector comprising: a metal housing formed with a hollow mating space and an open insertion port at one end; a terminal module, the portion of the mating space between the terminal module and the insertion port forming a mating functional area; each of the terminal pieces comprising a terminal fixed segment fixed in the insulating body, a terminal contact segment extended from the terminal fixed segment and at least partially protruding into the mating port, and a terminal mating segment extended from the terminal fixed segment and at least partially protruding out of the insulating body and the metal housing; at least one first shielding spring piece coupled to the inner wall surface at one end position of the mating functional area of the mating space of the metal housing; and at least one second shielding spring piece coupled to the inner wall surface at the other end position of the mating functional area of the mating space of the metal housing.

Description

Technical Field

[0001] This application relates to an electrical connector and an electrical connector assembly. Background Technology

[0002] A common challenge faced by electrical system developers is thermal management. Heat generated by electronic components within a system can degrade their performance and even damage system components, such as electrical connectors. Electrical connectors are used to transmit data and / or power between different systems or devices. Data signals can be transmitted via (multiple) communication cables in the form of optical and / or electrical signals. Examples include IC connectors (PGA, etc.), IO connectors (DisplayPort, VGA, DVI, HDMI, USB, etc.), fiber optic connectors (FC, SC, ST, LC, D4, DIN, MU, MT, etc.), optical communication connectors (SFP, QSFP, OSFP, etc.), filter connectors, CATV connectors, backplane connectors, memory module / memory connectors (DDR, SIMM, DIMM, PCI, SIM, etc.), high-definition television connectors (RF coaxial connectors, etc.), flexible circuit board connectors (FPC, FFC, etc.), network cable connectors (RJ45, etc.), audio / video (AV) connectors, battery connectors, and so on.

[0003] With the continuous development of technology, the requirements of equipment for the data transmission rate of such connectors are getting higher and higher, especially for high-frequency signal transmission, which has high requirements for shielding, grounding and anti-interference capabilities. Traditional structural designs can no longer meet the needs. Utility Model Content

[0004] The purpose of this application is to provide an electrical connector and electrical connector assembly that have better shielding, grounding and anti-interference capabilities.

[0005] To achieve the aforementioned objective, this application provides the following technical solution:

[0006] An electrical connector, comprising:

[0007] The metal casing forms a hollow docking space and has an open insertion port at one end;

[0008] The terminal module has an insulating body and a plurality of terminal pieces fixed to the insulating body. The terminal module is coupled to one end of the metal housing away from the insertion port within the docking space.

[0009] The interface is formed by a recess in the insulating body from one end near the insertion port toward the direction away from the insertion port, and the mating space is located between the mating interface and the insertion port of the insulating body, forming a mating functional area.

[0010] Each of the terminal components includes a terminal fixing section fixed within the insulating body, a terminal contact section extending from the terminal fixing section and at least partially protruding into the mating interface, and a terminal mating section extending from the terminal fixing section and at least partially protruding from the insulating body and the metal casing.

[0011] At least one first shielding spring piece is attached to the inner wall surface at one end of the docking functional area of ​​the docking space of the metal casing.

[0012] At least one second shielding spring is attached to the inner wall surface at the other end of the docking functional area of ​​the docking space of the metal casing.

[0013] Furthermore, the first shielding spring and / or the second shielding spring are formed with elastic arm portions that protrude into the docking functional area of ​​the docking space.

[0014] Furthermore, the elastic arm portion is formed as an arc-shaped structure that bends and protrudes into the docking functional area of ​​the docking space at the middle position, and the two ends of the elastic arm portion are respectively supported on the inner wall surface of the metal cover.

[0015] Furthermore, each of the first shielding spring pieces and / or the second shielding spring pieces is bent at both ends along the insertion and removal direction of the mating connector to form a folded portion, and a hanging hole is formed through the corresponding position of the metal cover. The folded portion passes through the hanging hole from the inside of the mating space and is fastened to the outer wall surface of the metal cover.

[0016] Furthermore, the metal housing includes a top plate and a bottom plate arranged opposite each other in a vertical direction perpendicular to the insertion and removal direction of the mating connector, and two side plates that connect the two side edges of the top plate and the bottom plate and are arranged opposite each other in a left-right direction perpendicular to the insertion and removal direction and the vertical direction of the mating connector.

[0017] The top plate is located above the upper surface of the terminal module;

[0018] The two side plates are respectively located on the outer sides of the terminal module;

[0019] The top plate, bottom plate, and two side plates are each provided with the first shielding spring piece and the second shielding spring piece.

[0020] Furthermore, it also includes: a first clearance hole, which is formed through the top plate at the docking functional area along the vertical direction;

[0021] The second clearance hole is formed on the top plate above the upper surface of the terminal module, extending through the vertical direction.

[0022] The first heat dissipation component is attached to the top of the top plate;

[0023] The first protrusion protrudes downward from the first heat sink and passes through the first clearance hole;

[0024] The second protrusion protrudes downward from the first heat sink and passes through the second clearance hole;

[0025] At least one of the second shielding spring pieces is attached to the top plate and positioned between the first clearance hole and the second clearance hole along the insertion / removal direction of the mating connector.

[0026] Furthermore, it also includes: a rear end plate, which is attached to the end edge of the top plate and the two side plates away from the insertion port, the rear end plate surrounding the end of the terminal module away from the mating interface along the insertion and removal direction of the mating connector;

[0027] The first skirt spring piece is attached to the outer surface of the side plate in the area where the terminal module is located. The first skirt spring piece is bent downward and outward to form a cantilevered first elastic contact foot.

[0028] The second skirt spring piece is attached to the outer surface of the rear end plate. The second skirt spring piece is bent downward and outward to form a cantilevered second elastic contact foot.

[0029] The third skirt spring is attached to the front part of the outer surface of the base plate near the insertion direction of the mating connector. The third skirt spring is bent downwards and inclined in the insertion direction of the mating connector to form a cantilevered third elastic contact foot.

[0030] Furthermore, it also includes: circuit board assemblies;

[0031] The terminal module assembly is attached to the surface of the circuit board assembly, and the metal casing is provided around the terminal module and fixed to the circuit board assembly.

[0032] The terminal mating section is in electrical contact with the surface of the circuit board assembly;

[0033] The lower edges of the two side plates extend to form side plate contact feet that make electrical contact with the surface of the circuit board assembly;

[0034] The lower edge of the rear end plate extends to form a rear end contact foot that makes electrical contact with the surface of the circuit board assembly.

[0035] The first elastic contact pin, the second elastic contact pin, and the third elastic contact pin are all in electrical contact with the surface of the circuit board assembly.

[0036] Furthermore, the metal flare is attached to the front edge of the metal housing along the pull-out direction of the connector, the insertion port is formed by the front edge of the metal flare along the pull-out direction of the connector, and the plane of the insertion port is inclined along the insertion and pull-out direction of the connector.

[0037] The width of the inner cavity of the metal flared portion along the vertical direction perpendicular to the insertion and removal direction of the mating connector is greater than the width of the mating space formed by the metal cover along the vertical direction, and / or the width of the inner cavity of the metal flared portion along the left and right directions perpendicular to the insertion and removal direction and the vertical direction of the mating connector is greater than the width of the mating space formed by the metal cover along the left and right directions.

[0038] To achieve the aforementioned objective, this application also provides the following technical solution:

[0039] An electrical connector assembly includes an electrical connector as described in any of the above claims and a mating connector that mates with the electrical connector. The mating connector has an extension portion extending from its front end along the insertion direction. When the mating connector is fully inserted into the mating space, the extension portion is located above the upper surface of the terminal module and contacts the lower surface of the second boss portion to achieve heat transfer.

[0040] Compared with the prior art, the beneficial effects of this application are: better shielding, grounding and anti-interference capabilities. Attached Figure Description

[0041] Figure 1 This is a three-dimensional schematic diagram of the electrical connector of this application.

[0042] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the CEC connector viewed from another angle.

[0043] Figure 3 This is a partial exploded perspective view of the electrical connector of this application.

[0044] Figure 4 yes Figure 3 A three-dimensional diagram viewed from another angle.

[0045] Figure 5 This is a partial exploded perspective view of the electrical connector of this application.

[0046] Figure 6 It is self Figure 1 A cross-sectional view along line AA in the middle.

[0047] Figure 7 yes Figure 6 Enlarged view of the structure within the dashed box. Detailed Implementation

[0048] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0049] In this application description, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections 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 this utility model based on the specific circumstances.

[0050] In the description of this 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, for example, 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 expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.

[0051] In this application, all directions should be referred to as... Figure 1 For reference, the X-axis is defined as the left-right direction; the Y-axis is defined as the up-down direction, with the positive Y-axis being up; and the Z-axis is defined as the insertion / removal direction of the connector.

[0052] Please refer to the reference. Figures 1 to 7 As shown, the electrical connector of this application includes a metal housing 1 and a terminal module 2 disposed within the metal housing 1. Specifically, the metal housing 1 forms a hollow mating space 10 and an open insertion port 110 at one end. The electrical connector of this application is used to mate with a mating connector (not shown, such as a plug connector) to achieve signal transmission.

[0053] Specifically, the metal housing 1 includes a top plate 101 and a bottom plate 102 arranged opposite each other in the vertical direction, two side plates 103 connecting the two side edges of the top plate 101 and the bottom plate 102 and arranged opposite each other in the left-right direction perpendicular to the insertion direction and vertical direction of the connector, and a rear end plate 104 attached to the end edge of the top plate 101 and the two side plates 103 away from the insertion port 110. The top plate 101, the two side plates 103 and the rear end plate 104 together form the docking space 10. An assembly hole (not labeled) is formed between the front end edge of the bottom plate 102 in the insertion direction of the connector and the rear end plate 104, and the assembly hole communicates the docking space 10 with the outside in the vertical direction. The electrical connector of this application is mainly used on the circuit board assembly 9 (shown schematically only) inside assembled electronic devices (including communication devices). Specifically, the terminal module 2 can be assembled and combined with the surface of the circuit board assembly 9, and the metal cover 1 can be placed around the terminal module 2 and fixed to the circuit board assembly 9.

[0054] Please refer to the reference. Figures 2 to 7 As shown in this application, the terminal module 2 includes an insulating body 21 and a plurality of terminal pieces (not labeled) fixed to the insulating body 21. The terminal module 2 is coupled to one end of the metal housing 1 in the mating space 10, away from the insertion port 110. The insulating body 21 is recessed at the end near the insertion port 110, forming a mating interface 210 in a direction away from the insertion port 110. Each terminal piece includes a terminal fixing section (not shown) fixed in the insulating body 21, a terminal contact section 221 extending from the terminal fixing section and at least partially protruding into the mating interface 210, and a terminal mating section 222 extending from the terminal fixing section and at least partially protruding from the insulating body 21 and the metal housing 1. The terminal contact section 221 is a flexible arm structure for mating with a mating connector. The terminal mating section 222 makes electrical contact with the surface of the circuit board assembly 9, preferably by soldering.

[0055] Please refer to the reference. Figures 3 to 7 As shown, the mating space 10, located between the mating interface 210 and the insertion port 110 of the insulating body 21, forms a mating functional area (not labeled). The electrical connector of this application also includes a first shielding spring 3 and a second shielding spring 4. The first shielding spring 3 is attached to the inner wall surface at one end of the mating functional area of ​​the mating space 10 of the metal housing 1. The second shielding spring 4 is attached to the inner wall surface at the other end of the mating functional area of ​​the mating space 10 of the metal housing 1. When the mating connector is mated with the electrical connector of this application, effective contact can be formed at at least two positions in the mating space 10 of the metal housing 1 along the insertion path of the mating connector, thereby enhancing shielding performance and improving anti-interference capability.

[0056] In this application, the structures of the first shielding spring 3 and the second shielding spring 4 are basically similar. Taking the first shielding spring 3 as an example, the structure is described as follows: it forms an elastic arm portion 341 that protrudes into the docking functional area of ​​the docking space 10. Specifically, the elastic arm portion 341 is formed as an arc-shaped structure that bends and protrudes into the docking functional area of ​​the docking space 10 at its middle position, and the two ends of the elastic arm portion 341 are respectively supported on the inner wall surface of the metal cover 1. In a preferred embodiment, each of the first shielding springs 3 has a folded portion 342 formed at both ends along the insertion and removal direction of the docking connector. A hanging hole 11 is formed through the corresponding position of the metal cover 1. The folded portion 342 passes through the hanging hole 11 from the inside of the docking space 10 and is fastened to the outer wall surface of the metal cover 1. When the mating connector is inserted into the mating space 10, the mating connector 10 can compress the first shielding spring 3 and the second shielding spring 4, and the elastic arm portion 341 can elastically deform, so that the first shielding spring 3 and the second shielding spring 4 extend as a whole along the insertion and removal direction of the mating connector. The structural design of the elastic arm portion 341 is conducive to maintaining effective contact between the first shielding spring 3 and the second shielding spring 4 and the metal cover 1.

[0057] In a preferred embodiment, the top plate 101, the bottom plate 102, and the two side plates 103 are each provided with the first shielding spring 3 and the second shielding spring 4. This allows the first shielding spring 3 and the second shielding spring 4 to form an effective four-sided surrounding elastic contact with the mating connector.

[0058] Please refer to the reference. Figures 3 to 6 As shown, a first clearance hole 1011 and a second clearance hole 1012 are formed through the top plate 101 in the vertical direction. The first clearance hole 1011 is formed in the vertical direction on the top plate 101 at the mating functional area. The second clearance hole 1012 is formed in the vertical direction on the top plate 101 above the upper surface of the terminal module 2. The electrical connector of this application also includes a first heat sink 5, which is attached to the top of the top plate 101. The first heat sink (5) protrudes downward to form a first boss portion 51 and a second boss portion 52. The first boss portion 51 passes downward through the first clearance hole 1011. The second boss portion 52 passes downward through the second clearance hole 1012. The second shielding spring member 4 is attached to the top plate 101 and is located between the first clearance hole 1011 and the second clearance hole 1012 in the insertion and removal direction of the mating connector.

[0059] Furthermore, the electrical connector of this application also includes a first skirt spring member 6, a second skirt spring member 7, and a third skirt spring member 8. The first skirt spring member 6 is attached to the outer surface of the side plate 103 in the region where the terminal module 2 is located, and the first skirt spring member 6 is bent downward and outward to form a cantilevered first elastic contact foot 61. The second skirt spring member 7 is attached to the outer surface of the rear end plate 104, and the second skirt spring member 7 is bent downward and outward to form a cantilevered second elastic contact foot 71. The third skirt spring member 8 is attached to the outer surface of the base plate 102 at a position close to the front section of the insertion direction of the mating connector, and the third skirt spring member 8 is bent downward in the insertion direction of the mating connector to form a cantilevered third elastic contact foot 81. Preferably, the extension length of the first skirt spring member 6 along the insertion and removal direction of the mating connector covers the entire length of the terminal module 2. Preferably, the second skirt spring 7 and the third skirt spring 8 extend in the left-right direction, covering the full width of the terminal module 2. The arrangement of the first skirt spring 6, the second skirt spring 7, and the third skirt spring 8 further enhances shielding performance and improves anti-interference capabilities.

[0060] Furthermore, the lower edges of the two side plates 103 extend to form side plate contact feet 1031 that are electrically in contact with the surface of the circuit board assembly 9. The lower edge of the rear end plate 104 extends to form a rear end contact foot 1041 that is electrically in contact with the surface of the circuit board assembly 9. The first elastic contact foot 61, the second elastic contact foot 71, and the third elastic contact foot 81 are all electrically in contact with the surface of the circuit board assembly 9. In a preferred embodiment, this design can further enhance the shielding performance and improve the anti-interference capability.

[0061] Please refer to the reference. Figures 1 to 6 As shown. In the electrical connector of this application, the metal housing 1 is further combined with a metal flared portion 12 at the front edge position along the pull-out direction of the mating connector. The insertion port 110 is formed by the metal flared portion 12 along the front edge of the pull-out direction of the mating connector. In the embodiments of this application, the plane where the insertion port 110 is located is inclined along the insertion and pull-out direction of the mating connector. The metal flared portion 12 can be a component integrally formed with the metal housing 1, or it can be a separately formed component that is fixed to the metal housing 1 by assembly or welding. In one embodiment, the width of the inner cavity of the metal flared portion 12 in the vertical direction perpendicular to the insertion and pull-out direction of the mating connector is greater than the width of the mating space 10 formed by the metal housing 1 in the vertical direction, and / or in another embodiment, the width of the inner cavity of the metal flared portion 12 in the horizontal direction perpendicular to the insertion and pull-out direction and the vertical direction of the mating connector is greater than the width of the mating space 10 formed by the metal housing 1 in the horizontal direction.

[0062] The design of the metal flared portion 12 allows for the exposure of certain parts of the connector (such as the operating lever of the connector), making it easier for the user to grasp the exposed part (such as the operating lever) when the connector needs to be removed. Furthermore, this design also improves heat dissipation. It makes it possible to arrange multiple electrical connectors side-by-side in a dense arrangement. In addition, it indirectly allows the corresponding connectors to be tilted, improving the utilization of space outside the equipment enclosure.

[0063] Please refer to Figure 6 As shown in this embodiment, the first heat sink 5 extends almost the entire length of the metal housing 1 along the insertion / removal direction of the connector. A gap (not labeled) is formed between the upper surface of the terminal module 2 (which in this embodiment is actually the upper surface of the insulating body 21) and the inner surface (or lower surface) of the top plate 101. Figure 6 (Visible). The front end of the docking connector extends along the insertion direction with an extension portion. When the docking connector is fully inserted into the docking space 10, the extension portion is located above the upper surface of the terminal module 2 and can contact the lower surface of the second boss portion 52 to achieve heat transfer.

[0064] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrical connector, characterized by, include: The metal casing (1) forms a hollow docking space (10) and has an open insertion port (110) at one end; The terminal module (2) is provided with an insulating body (21) and a plurality of terminal pieces fixed to the insulating body (21). The terminal module (2) is coupled to one end of the metal casing (1) away from the insertion port (110) in the docking space (10). The interface (210) is formed by the indentation of the insulating body (21) from the end near the insertion port (110) towards the direction away from the insertion port (110), and the docking space (10) is the part of the insulating body (21) between the interface (210) and the insertion port (110) to form a docking functional area. Each of the terminal components includes a terminal fixing section fixed within the insulating body (21), a terminal contact section (221) extending from the terminal fixing section and at least partially protruding into the mating interface (210), and a terminal mating section (222) extending from the terminal fixing section and at least partially protruding from the insulating body (21) and the metal casing (1); At least one first shielding spring piece (3) is attached to the inner wall surface of one end of the docking functional area of ​​the docking space (10) of the metal cover (1); At least one second shielding spring piece (4) is attached to the inner wall surface at the other end of the docking functional area of ​​the docking space (10) of the metal casing (1).

2. The electrical connector of claim 1, wherein: The first shielding spring (3) and / or the second shielding spring (4) are formed with an elastic arm portion (341) protruding into the docking functional area of ​​the docking space (10).

3. The electrical connector of claim 2, wherein: The elastic arm portion (341) is formed as an arc-shaped structure that bends and protrudes into the docking functional area of ​​the docking space (10) at the middle position, and the two ends of the elastic arm portion (341) are supported on the inner wall surface of the metal cover (1).

4. The electrical connector of claims 1 or 2 or 3, wherein: Each of the first shielding spring piece (3) and / or the second shielding spring piece (4) is bent at both ends along the insertion and removal direction of the mating connector to form a folded portion (342). A hanging hole (11) is formed through the corresponding position of the metal cover (1). The folded portion (342) passes through the hanging hole (11) from the inside of the mating space (10) and is fastened to the outer wall surface of the metal cover (1).

5. The electrical connector as described in claim 1, 2, or 3, characterized in that: The metal casing (1) includes a top plate (101) and a bottom plate (102) arranged opposite each other in the up-down direction perpendicular to the insertion and removal direction of the docking connector, and two side plates (103) that connect the two side edges of the top plate (101) and the bottom plate (102) and are arranged opposite each other in the left-right direction perpendicular to the insertion and removal direction and the up-down direction of the docking connector. The top plate (101) is located above the upper surface of the terminal module (2); The two side plates (103) are respectively located on the outer sides of the terminal module (2); The top plate (101), bottom plate (102) and two side plates (103) are each provided with the first shielding spring piece (3) and the second shielding spring piece (4).

6. The electrical connector of claim 5, wherein, Also includes: A first clearance hole (1011) is formed through the top plate (101) at the docking functional area along the vertical direction; The second clearance hole (1012) is formed on the top plate (101) above the upper surface of the terminal module (2) along the vertical direction; The first heat sink (5) is attached to the top plate (101) above it; The first protrusion (51) protrudes downward from the first heat sink (5) and passes through the first clearance hole (1011); The second protrusion (52) protrudes downward from the first heat sink (5) and passes through the second clearance hole (1012); At least one of the second shielding spring pieces (4) is attached to the top plate (101) and located between the first clearance hole (1011) and the second clearance hole (1012) along the insertion and removal direction of the mating connector.

7. The electrical connector of claim 5, wherein, Also includes: The rear end plate (104) is attached to the end edge of the top plate (101) and the two side plates (103) away from the insertion port (110), and the rear end plate (104) surrounds the end of the terminal module (2) away from the mating interface (210) along the insertion and removal direction of the mating connector. The first skirt spring piece (6) is attached to the outer surface of the side plate (103) in the area where the terminal module (2) is located. The first skirt spring piece (6) is bent downward and outward to form a cantilevered first elastic contact foot (61). The second skirt spring piece (7) is attached to the outer surface of the rear end plate (104). The second skirt spring piece (7) is bent downward and outward to form a cantilevered second elastic contact foot (71). The third skirt spring piece (8) is attached to the front part of the outer surface of the base plate (102) near the insertion direction of the mating connector. The third skirt spring piece (8) is bent downward in the insertion direction of the mating connector to form a cantilevered third elastic contact foot (81).

8. The electrical connector of claim 7, wherein, Also includes: Circuit board assembly (9); The terminal module (2) is assembled and combined with the surface of the circuit board assembly (9), and the metal cover (1) is covered around the terminal module (2) and fixed to the circuit board assembly (9); The terminal mating section (222) makes electrical contact with the surface of the circuit board assembly (9); The lower edges of the two side plates (103) extend to form side plate contact feet (1031) that are in electrical contact with the surface of the circuit board assembly (9); The lower edge of the rear end plate (104) extends to form a rear end contact foot (1041) that is electrically in contact with the surface of the circuit board assembly (9); The first elastic contact pin (61), the second elastic contact pin (71) and the third elastic contact pin (81) are all in electrical contact with the surface of the circuit board assembly (9).

9. The electrical connector of claim 1, wherein, Also includes: The metal flared portion (12) is attached to the front edge of the metal housing (1) along the pull-out direction of the connector. The insertion port (110) is formed by the front edge of the metal flared portion (12) along the pull-out direction of the connector. The plane of the insertion port (110) is inclined along the insertion and pull-out direction of the connector. The width of the inner cavity of the metal flared portion (12) in the vertical direction perpendicular to the insertion and removal direction of the mating connector is greater than the width of the mating space (10) formed by the metal cover (1) in the vertical direction, and / or the width of the inner cavity of the metal flared portion (12) in the left and right directions perpendicular to the insertion and removal direction and the vertical direction of the mating connector is greater than the width of the mating space (10) formed by the metal cover (1) in the left and right directions.

10. An electrical connector assembly characterized by: Includes an electrical connector as described in any one of claims 1 to 8 and a mating connector that mates with the electrical connector, wherein the mating connector has an extension portion extending from its front end along the insertion direction, and when the mating connector is fully inserted into the mating space (10), the extension portion is located above the upper surface of the terminal module (2) and contacts the lower surface of the second boss portion (52) to achieve heat transfer.

Images