Electrical connector and its use in a liquid-cooled environment

Abstract

An electric connector includes an insulating body, a plurality of conductive terminals, and a metal shell. The insulating body includes a mating slot and a heat dissipation liquid flow channel communicated with the mating slot. The metal shell includes a first outer wall portion and a second outer wall portion buckled and fixed together with the first outer wall portion. The first outer wall portion has a dimension along a second direction greater than that of the second outer wall portion along the second direction. The first outer wall portion is provided with a heat dissipation liquid flow channel opening communicated with the heat dissipation liquid flow channel. The first outer wall portion is not provided with the heat dissipation liquid flow channel opening at a joint with the second outer wall portion, thereby reducing the influence of the joint on the heat dissipation liquid flow channel opening. The application also discloses an application of the electric connector in a liquid cooling environment.

Description

Technical Field

[0001] This invention relates to an electrical connector, and more particularly to an electrical connector for use in liquid-cooled environments. Background Technology

[0002] Conventional electrical connectors operate in air and do not require specially designed heat dissipation structures. However, as the applications of electrical connectors become increasingly diverse, applying them to liquid-cooled environments is a promising endeavor. Therefore, heat dissipation channels need to be incorporated into the electrical connector.

[0003] The electrical connector typically includes an insulating body, several conductive terminals, and a metal housing. The metal housing is usually formed by stamping, bending, and snapping together metal sheets. How to avoid the seams of the metal housing during manufacturing negatively impacting the design of the heat dissipation channels is a technical problem that those skilled in the art need to solve. Summary of the Invention

[0004] The purpose of this invention is to provide an electrical connector with an easy-to-set heat dissipation fluid flow groove and its application in a liquid-cooled environment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an electrical connector, comprising:

[0006] An insulating body includes a plurality of walls, a mating surface, and a mating slot penetrating the mating surface; the plurality of walls includes a first wall, which has a heat dissipation liquid flow groove communicating with the mating slot; the mating slot is configured to be inserted into a mating connector along a first direction.

[0007] A plurality of conductive terminals, each conductive terminal including a resilient contact arm, the resilient contact arm including a contact portion protruding into the mating slot and configured for electrical connection with the mating connector; and

[0008] A metal casing includes several outer walls covering an insulating body. The outer walls include a first outer wall, which comprises a first outer wall portion and a second outer wall portion that is fastened and fixed together with the first outer wall portion. The dimension of the first outer wall portion along a second direction is larger than the dimension of the second outer wall portion along the second direction. The first outer wall portion is provided with a heat dissipation liquid flow groove penetrating the first outer wall portion along a third direction, and the heat dissipation liquid flow groove is connected to the heat dissipation liquid flow channel. The first direction, the second direction, and the third direction are mutually perpendicular.

[0009] The heat dissipation liquid flow groove is not provided at the joint between the first outer wall and the second outer wall.

[0010] As a further improvement of the present invention, the plurality of conductive terminals include a first differential pair signal terminal, a first ground terminal located on one side of the first differential pair signal terminal along the second direction, and a second ground terminal located on the other side of the first differential pair signal terminal along the second direction; the first differential pair signal terminal includes a first signal terminal and a second signal terminal arranged adjacent to each other along the second direction;

[0011] The first differential pair signal terminal is exposed to the outside of the electrical connector through the heat dissipation fluid flow channel and the heat dissipation fluid flow opening.

[0012] As a further improvement of the present invention, the plurality of wall portions include a second wall portion opposite to the first wall portion, a third wall portion connecting one end of the first wall portion and one end of the second wall portion, and a fourth wall portion connecting the other end of the first wall portion and the other end of the second wall portion; the fourth wall portion is disposed opposite to the third wall portion; the mating slot is formed by at least the first wall portion, the second wall portion, the third wall portion and the fourth wall portion;

[0013] The heat dissipation liquid flow channel includes a first heat dissipation liquid flow channel and a second heat dissipation liquid flow channel. The first heat dissipation liquid flow channel and the second heat dissipation liquid flow channel are spaced apart along the second direction. The elastic contact arm portion of the first signal terminal is exposed in the first heat dissipation liquid flow channel, and the elastic contact arm portion of the second signal terminal is exposed in the second heat dissipation liquid flow channel.

[0014] As a further improved technical solution of the present invention, the heat dissipation liquid flow channel includes a third heat dissipation liquid flow channel and a fourth heat dissipation liquid flow channel disposed on the first wall portion and penetrating the mating surface along the first direction. The third heat dissipation liquid flow channel and the fourth heat dissipation liquid flow channel are spaced apart along the second direction. The third heat dissipation liquid flow channel is connected to the first heat dissipation liquid flow channel, and the fourth heat dissipation liquid flow channel is connected to the second heat dissipation liquid flow channel.

[0015] As a further improvement of the present invention, the heat dissipation liquid flow channel includes a fifth heat dissipation liquid flow channel and a sixth heat dissipation liquid flow channel disposed on the first wall portion and penetrating the first wall portion. The fifth heat dissipation liquid flow channel and the sixth heat dissipation liquid flow channel are spaced apart along the second direction. The fifth heat dissipation liquid flow channel is aligned with and spaced apart from the first heat dissipation liquid flow channel along the first direction. The sixth heat dissipation liquid flow channel is aligned with and spaced apart from the second heat dissipation liquid flow channel along the first direction. The elastic contact arm portion of the first signal terminal is exposed in the fifth heat dissipation liquid flow channel, and the elastic contact arm portion of the second signal terminal is exposed in the sixth heat dissipation liquid flow channel.

[0016] As a further improved technical solution of the present invention, the first outer wall covers the first wall portion, and the plurality of outer walls further include a second outer wall covering the second wall portion, a third outer wall covering the third wall portion, and a fourth outer wall covering the fourth wall portion; the heat dissipation liquid flow groove includes a first heat dissipation liquid flow groove disposed on the first outer wall and penetrating the first outer wall in the third direction, and both the first heat dissipation liquid flow groove and the second heat dissipation liquid flow groove are exposed in the first heat dissipation liquid flow groove.

[0017] As a further improved technical solution of the present invention, the second wall portion is provided with a main body portion, a first support portion protruding from the main body portion along the third direction away from the first wall portion, and a second support portion protruding from the main body portion along the third direction away from the first wall portion. The first support portion and the second support portion are spaced apart along the second direction. The first support portion is provided with a first fixing groove, and the second support portion is provided with a second fixing groove.

[0018] The second outer wall is provided with a main body portion supported on the first support portion and the second support portion, a first fixing piece bent inward from the main body portion, and a second fixing piece bent inward from the main body portion. The first fixing piece is fixed to the first fixing groove, and the second fixing piece is fixed to the second fixing groove.

[0019] As a further improvement of the present invention, the electrical connector includes a receiving space surrounded by the first support portion, the second support portion, the main body portion and the body portion, and the receiving space is located outside the mating slot;

[0020] The second outer wall is provided with an extension protrusion that extends integrally from the main body, the extension protrusion protruding out of the mating surface, and the extension protrusion is provided with at least one locking hole that penetrates the extension protrusion along the third direction;

[0021] The receiving space is configured to partially receive the mating connector, and the locking hole is configured to engage with the locking protrusion of the mating connector.

[0022] As a further improved technical solution of the present invention, the heat dissipation liquid flow channel includes a seventh heat dissipation liquid flow channel and an eighth heat dissipation liquid flow channel disposed on the second wall and penetrating the second wall. The seventh heat dissipation liquid flow channel and the eighth heat dissipation liquid flow channel are spaced apart along the second direction. The seventh heat dissipation liquid flow channel and the eighth heat dissipation liquid flow channel are both connected to the docking slot and the receiving space along the third direction.

[0023] The main body is provided with a heat dissipation liquid flow passage that extends through the main body in a third direction, and the heat dissipation liquid flow passage is connected to the accommodating space.

[0024] As a further improved technical solution of the present invention, the heat dissipation liquid flow channel includes a ninth heat dissipation liquid flow channel and a tenth heat dissipation liquid flow channel disposed on the second wall and penetrating the mating surface along the first direction. The ninth heat dissipation liquid flow channel and the tenth heat dissipation liquid flow channel are spaced apart along the second direction. The ninth heat dissipation liquid flow channel is connected to the seventh heat dissipation liquid flow channel, and the tenth heat dissipation liquid flow channel is connected to the eighth heat dissipation liquid flow channel.

[0025] As a further improvement of the present invention, the insulating body includes a mounting surface and a mounting groove penetrating the mounting surface, the mounting groove being connected to the mating slot;

[0026] The electrical connector includes a terminal module installed in the mounting slot. The terminal module includes an insulating block. A plurality of conductive terminals are fixed to the insulating block. The insulating block has a heat dissipation liquid flow through hole that runs through the insulating block along the first direction and communicates with the mating slot.

[0027] As a further improvement of the present invention, the elastic contact arm of the first signal terminal includes a first support section, a first inclined arm connected to the first support section, and a first contact portion connected to the first inclined arm; the contact portion includes the first contact portion.

[0028] The first support segment has a first width W1 along the second direction; the first contact portion has a second width W2 along the second direction; the first support segment has a first thickness T1 along the third direction; wherein W1-W2≤0.1mm; W1 / W2≤29 / 19; W1 / T1≤9 / 5.

[0029] As a further improved technical solution of the present invention, the first wall portion is provided with a first guide slope connected to the mating surface, a first inner wall surface connected to the first guide slope and extending along the first direction, and a first bottom surface connected to the first inner wall surface.

[0030] The elastic contact arm of the conductive terminal includes an end portion connected to the contact portion, and the end portion is spaced apart from the first bottom surface in the first direction; the electrical connector is provided with a first gap groove located between the first bottom surface and the end portion along the first direction;

[0031] The end portion has an end surface, and the end portion extends beyond the first inner wall surface in the third direction so that the end surface is located outside the first inner wall surface.

[0032] To achieve the above objectives, the present invention also adopts the following technical solution: an application of an electrical connector in a liquid-cooled environment, wherein the electrical connector is the aforementioned electrical connector, the electrical connector is immersed in the liquid of the liquid-cooled environment, and the liquid can flow through the heat dissipation liquid flow groove and the heat dissipation liquid flow groove to remove the heat generated by the electrical connector.

[0033] Compared to existing technologies, the dimension of the first outer wall portion along the second direction is larger than the dimension of the second outer wall portion along the second direction in this invention; the first outer wall portion is provided with a heat dissipation liquid flow groove penetrating the first outer wall portion along the third direction, and the heat dissipation liquid flow groove is connected to the heat dissipation liquid flow channel; the heat dissipation liquid flow groove is not provided at the joint between the first outer wall portion and the second outer wall portion. With this arrangement, the heat generated by the electrical connector during operation can be carried away by the liquid flowing through the heat dissipation liquid flow groove and the heat dissipation liquid flow channel, thereby improving the heat dissipation performance of the electrical connector. Furthermore, by providing the joint at one end of the first outer wall, compared to the related technologies where the joint is located in the middle of the outer wall, this invention can form the heat dissipation liquid flow groove on the first outer wall portion, thereby reducing the impact of the joint on the provision of the heat dissipation liquid flow groove. Attached Figure Description

[0034] Figure 1 This is a three-dimensional schematic diagram of the electrical connector of the present invention in one embodiment.

[0035] Figure 2 yes Figure 1 A three-dimensional diagram from another angle.

[0036] Figure 3 yes Figure 1 Partial exploded 3D diagram.

[0037] Figure 4 yes Figure 3 Another perspective of partial 3D exploded view.

[0038] Figure 5 yes Figure 4 Further partial exploded view.

[0039] Figure 6 yes Figure 3 A three-dimensional schematic diagram of the insulating body.

[0040] Figure 7 yes Figure 6 A three-dimensional diagram from another angle.

[0041] Figure 8 yes Figure 6 Top view.

[0042] Figure 9 yes Figure 6 A bottom view.

[0043] Figure 10 yes Figure 1 The main view.

[0044] Figure 11 yes Figure 1 Rear view.

[0045] Figure 12 yes Figure 1 The left view.

[0046] Figure 13 yes Figure 1 The right view.

[0047] Figure 14 yes Figure 1 Top view.

[0048] Figure 15 yes Figure 1 A bottom view.

[0049] Figure 16 This is a front view of some components of the electrical connector of the present invention in an exploded state.

[0050] Figure 17 yes Figure 16 Rear view.

[0051] Figure 18 yes Figure 16 The left view.

[0052] Figure 19 yes Figure 16 The right view.

[0053] Figure 20 yes Figure 19 An exploded view of the first terminal module and the second terminal module.

[0054] Figure 21 This is an exploded perspective view of the first terminal module and the second terminal module.

[0055] Figure 22 yes Figure 21 A left view of several first conductive terminals and several second conductive terminals.

[0056] Figure 23 yes Figure 22 A left view of a set of second differential pair signal terminals, a third ground terminal, and a fourth ground terminal.

[0057] Figure 24 yes Figure 22 A left view of a set of first differential pair signal terminals, a first ground terminal, and a second ground terminal.

[0058] Figure 25 It is along Figure 14 A cross-sectional view of the BB line.

[0059] Figure 26 yes Figure 25 A magnified view of part C within the middle frame.

[0060] Figure 27 yes Figure 25 The diagram shows the electrical connector being used in a liquid-cooled environment.

[0061] Figure 28 It is along Figure 11 A cross-sectional schematic diagram of the DD line.

[0062] Figure 29 It is along Figure 12 A cross-sectional schematic diagram of the EE line. Detailed Implementation

[0063] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0064] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” as used in the specification and claims of this invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0065] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "before," "after," "upper," "lower," and similar words appearing in this invention are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" encompasses the element following "comprising" or "including" and its equivalents, but this does not preclude the element preceding "comprising" or "including" from also including other elements. In this invention, the term "several" means two or more.

[0066] Please refer to Figures 1 to 29 As shown in the illustration, an embodiment of the present invention discloses an electrical connector 100, which includes an insulating body 1, a plurality of conductive terminals 2 directly or indirectly fixed to the insulating body 1, and a metal housing 3 covering the insulating body 1. The electrical connector 100 is used in a liquid-cooled environment to be inserted into a mating connector (not shown) along a first direction A1-A1 (e.g., vertical direction).

[0067] Please combine Figures 1 to 9 As shown, the insulating body 1 includes several wall portions, a mating surface 10, a mounting surface 16, a mating slot 101 extending upward through the mating surface 10 along the first direction A1-A1, and a mounting groove 102 extending downward through the mounting surface 16 along the first direction A1-A1. The mating slot 101 is configured to be inserted into the mating connector along the first direction A1-A1.

[0068] In the embodiment illustrated in the present invention, at least one of the plurality of wall portions is provided with a heat dissipation liquid flow channel 103 communicating with the docking slot 101. Specifically, the plurality of wall portions includes a first wall portion 11, a second wall portion 12 opposite to the first wall portion 11, a third wall portion 13 connecting one end of the first wall portion 11 and one end of the second wall portion 12, and a fourth wall portion 14 connecting the other end of the first wall portion 11 and the other end of the second wall portion 12. The first wall portion 11 and the second wall portion 12 are disposed opposite to each other and are parallel to each other. The fourth wall portion 14 and the third wall portion 13 are disposed opposite to each other and are parallel to each other. The docking slot 101 is formed by at least the first wall portion 11, the second wall portion 12, the third wall portion 13, and the fourth wall portion 14.

[0069] Please combine Figure 25 as well as Figure 26 As shown, the first wall portion 11 is provided with a first guide slope 11a connected to the mating surface 10, a first inner wall surface 11b connected to the first guide slope 11a and extending along the first direction A1-A1, and a first bottom surface 11c connected to the first inner wall surface 11b.

[0070] Similarly, the second wall portion 12 is provided with a second guide slope 12a connected to the mating surface 10, a second inner wall surface 12b connected to the second guide slope 12a and extending along the first direction A1-A1, and a second bottom surface 12c connected to the second inner wall surface 12b.

[0071] Please combine Figure 6 As shown in the illustrated embodiment of the present invention, the heat dissipation liquid flow channel 103 includes a plurality of first heat dissipation liquid flow channels 103a disposed on and penetrating the first wall portion 11, and a plurality of second heat dissipation liquid flow channels 103b disposed on and penetrating the first wall portion 11. The first heat dissipation liquid flow channels 103a and second heat dissipation liquid flow channels 103b that are close to each other form a group, wherein the first heat dissipation liquid flow channels 103a and second heat dissipation liquid flow channels 103b are spaced apart along a second direction A2-A2 (e.g., a left-right direction). Both the first heat dissipation liquid flow channels 103a and second heat dissipation liquid flow channels 103b penetrate the first wall portion 11 along a third direction A3-A3 (e.g., a front-back direction). The third direction A3-A3 is perpendicular to the first direction A1-A1 and the second direction A2-A2.

[0072] In the embodiment illustrated in the present invention, the heat dissipation liquid flow channel 103 includes a plurality of third heat dissipation liquid flow channels 103c disposed on the first wall portion 11 and extending upward through the mating surface 10 along the first direction A1-A1, and a plurality of fourth heat dissipation liquid flow channels 103d disposed on the first wall portion 11 and extending upward through the mating surface 10 along the first direction A1-A1. The third heat dissipation liquid flow channels 103c and fourth heat dissipation liquid flow channels 103d that are close to each other form a group, wherein the third heat dissipation liquid flow channels 103c and fourth heat dissipation liquid flow channels 103d are spaced apart along the second direction A2-A2. The third heat dissipation liquid flow channel 103c is connected to the first heat dissipation liquid flow channel 103a, and the third heat dissipation liquid flow channel 103c is perpendicular to the first heat dissipation liquid flow channel 103a. The fourth heat dissipation liquid flow channel 103d is connected to the second heat dissipation liquid flow channel 103b, and the fourth heat dissipation liquid flow channel 103d is perpendicular to the second heat dissipation liquid flow channel 103b.

[0073] To further improve heat dissipation, the heat dissipation liquid flow channel 103 further includes a plurality of fifth heat dissipation liquid flow channels 103e disposed on and penetrating the first wall portion 11, and a plurality of sixth heat dissipation liquid flow channels 103f disposed on and penetrating the first wall portion 11. The fifth heat dissipation liquid flow channels 103e and the sixth heat dissipation liquid flow channels 103f, which are close to each other, form a group, wherein the fifth heat dissipation liquid flow channels 103e and the sixth heat dissipation liquid flow channels 103f are spaced apart along the second direction A2-A2. The fifth heat dissipation liquid flow channels 103e are aligned with and spaced apart from the first heat dissipation liquid flow channels 103a along the first direction A1-A1. The sixth heat dissipation liquid flow channels 103f are aligned with and spaced apart from the second heat dissipation liquid flow channels 103b along the first direction A1-A1.

[0074] Please combine Figures 6 to 8 As shown, the second wall portion 12 includes a main body portion 121, a first support portion 122 protruding from the main body portion 121 along a third direction A3-A3 away from the first wall portion 11, and a second support portion 123 protruding from the main body portion 121 along a third direction A3-A3 away from the first wall portion 11. The first support portion 122 and the second support portion 123 are spaced apart along the second direction A2-A2. The first support portion 122 has an upwardly penetrating first fixing groove 1221. The second support portion 123 has an upwardly penetrating second fixing groove 1231.

[0075] In the embodiment illustrated in the present invention, the heat dissipation liquid flow channel 103 includes a seventh heat dissipation liquid flow channel 103g disposed on and penetrating the second wall portion 12, and an eighth heat dissipation liquid flow channel 103h disposed on and penetrating the second wall portion 12. The seventh heat dissipation liquid flow channel 103g and the eighth heat dissipation liquid flow channel 103h, which are close to each other, form a group, wherein the seventh heat dissipation liquid flow channel 103g and the eighth heat dissipation liquid flow channel 103h are spaced apart along the second direction A2-A2. Both the seventh heat dissipation liquid flow channel 103g and the eighth heat dissipation liquid flow channel 103h are connected to the docking slot 101 along the third direction A3-A3.

[0076] In the embodiment illustrated in the present invention, the heat dissipation liquid flow channel 103 includes a ninth heat dissipation liquid flow channel 103i disposed on the second wall portion 12 and extending upward along the first direction A1-A1 through the mating surface 10, and a tenth heat dissipation liquid flow channel 103j disposed on the second wall portion 12 and extending upward along the first direction A1-A1 through the mating surface 10. The ninth heat dissipation liquid flow channel 103i and the tenth heat dissipation liquid flow channel 103j, which are close to each other, form a group, wherein the ninth heat dissipation liquid flow channel 103i and the tenth heat dissipation liquid flow channel 103j are spaced apart along the second direction A2-A2. The ninth heat dissipation liquid flow channel 103i is connected to the seventh heat dissipation liquid flow channel 103g, and the ninth heat dissipation liquid flow channel 103i is perpendicular to the seventh heat dissipation liquid flow channel 103g. The tenth heat dissipation liquid flow channel 103j is connected to the eighth heat dissipation liquid flow channel 103h, and the tenth heat dissipation liquid flow channel 103j is perpendicular to the eighth heat dissipation liquid flow channel 103h.

[0077] To further improve heat dissipation, the heat dissipation liquid flow channel 103 further includes a plurality of eleventh heat dissipation liquid flow channels 103k disposed on and penetrating the second wall portion 12, and a plurality of twelfth heat dissipation liquid flow channels 103l disposed on and penetrating the second wall portion 12. The eleventh heat dissipation liquid flow channels 103k and the twelfth heat dissipation liquid flow channels 103l, which are close to each other, form a group, wherein the eleventh heat dissipation liquid flow channels 103k and the twelfth heat dissipation liquid flow channels 103l are spaced apart along the second direction A2-A2. The eleventh heat dissipation liquid flow channels 103k and the seventh heat dissipation liquid flow channel 103g are aligned and spaced apart along the first direction A1-A1. The twelfth heat dissipation liquid flow channels 103l and the eighth heat dissipation liquid flow channel 103h are aligned and spaced apart along the first direction A1-A1.

[0078] Preferably, in the embodiment illustrated in the present invention, the first heat dissipation liquid flow channel 103a and the seventh heat dissipation liquid flow channel 103g are symmetrically arranged on both sides of the docking slot 101 at corresponding positions; the second heat dissipation liquid flow channel 103b and the eighth heat dissipation liquid flow channel 103h are symmetrically arranged on both sides of the docking slot 101 at corresponding positions; the third heat dissipation liquid flow channel 103c and the ninth heat dissipation liquid flow channel 103i are symmetrically arranged on both sides of the docking slot 101 at corresponding positions; the fourth heat dissipation liquid flow channel 103d and the tenth heat dissipation liquid flow channel 103j are symmetrically arranged on both sides of the docking slot 101 at corresponding positions; the fifth heat dissipation liquid flow channel 103e and the eleventh heat dissipation liquid flow channel 103k are symmetrically arranged on both sides of the docking slot 101 at corresponding positions; and the sixth heat dissipation liquid flow channel 103f and the twelfth heat dissipation liquid flow channel 103l are symmetrically arranged on both sides of the docking slot 101 at corresponding positions.

[0079] Please combine Figure 7 As shown, the third wall portion 13 is provided with a first retaining groove 131 and a first retaining surface 132 located at the top of the first retaining groove 131.

[0080] Similarly, please combine Figure 6 As shown, the fourth wall portion 14 is provided with a second retaining groove 141 and a second retaining surface 142 located at the top of the second retaining groove 141. The first retaining surface 132 and the second retaining surface 142 are both located below the mating surface 10.

[0081] Please combine Figure 7 As shown in the illustrated embodiment of the present invention, the plurality of wall portions include a bottom wall 15, which is at least partially located at the bottom of the mating slot 101. The mounting surface 16 is located on the lower surface of the bottom wall 15 and is disposed opposite to the mating surface 10. The mounting groove 102 is disposed on the bottom wall 15 and communicates with the mating slot 101.

[0082] In the embodiment illustrated in the present invention, the mounting groove 102 includes a first mounting groove 102a communicating with the docking slot 101 and a second mounting groove 102b communicating with the docking slot 101. The first mounting groove 102a and the second mounting groove 102b are spaced apart along the third direction A3-A3. In other words, the bottom wall 15 includes a partition wall 151 located between the first mounting groove 102a and the second mounting groove 102b. The side of the partition wall 151 exposed to the first mounting groove 102a is recessed with a plurality of first dovetail grooves 1511 communicating with the first mounting groove 102a. The side of the partition wall 151 exposed to the second mounting groove 102b is recessed with a plurality of second dovetail grooves 1512 communicating with the second mounting groove 102b.

[0083] In addition, please combine Figure 7 as well as Figure 8 As shown, the bottom wall 15 further includes a first extended bottom wall 152 extending away from the first wall portion 11 and a second extended bottom wall 153 extending away from the first wall portion 11. The first extended bottom wall 152 is located outside the second mounting groove 102b and is connected to the first support portion 122. The second extended bottom wall 153 is located outside the second mounting groove 102b and is connected to the second support portion 123. The first extended bottom wall 152 has at least one first heat dissipation liquid flow opening 1521 penetrating the first extended bottom wall 152 along the first direction A1-A1. The second extended bottom wall 153 has at least one second heat dissipation liquid flow opening 1531 penetrating the second extended bottom wall 153 along the first direction A1-A1.

[0084] Please combine Figures 1 to 3 As shown, the metal casing 3 includes several outer walls covering the insulating body 1. At least one of the outer walls is provided with a heat dissipation liquid flow groove 104 that communicates with the heat dissipation liquid flow groove 103.

[0085] In the illustrated embodiment of the present invention, the plurality of outer walls include a first outer wall 31 covering the first wall portion 11, a second outer wall 32 covering the second wall portion 12, a third outer wall 33 covering the third wall portion 13, and a fourth outer wall 34 covering the fourth wall portion 14. In the illustrated embodiment of the present invention, the first outer wall 31, the second outer wall 32, the third outer wall 33, and the fourth outer wall 34 are formed by bending and fastening a single metal plate.

[0086] The first outer wall 31 includes a first outer wall portion 311 and a second outer wall portion 312 that is fastened and fixed together with the first outer wall portion 311. In the embodiment illustrated in the present invention, the joint 313 between the first outer wall portion 311 and the second outer wall portion 312 is respectively provided with dovetail protrusions 3111 and dovetail grooves 3121 that interlock with each other. In the embodiment illustrated in the present invention, the joint 313 is not located in the middle of the first outer wall 31, but is located on the first outer wall 31 near the third wall portion 13. In other words, the dimension of the first outer wall portion 311 along the second direction A2-A2 is much larger than the dimension of the second outer wall portion 312 along the second direction A2-A2.

[0087] In the embodiment illustrated in the present invention, the heat dissipation liquid flow channel 104 includes a plurality of first heat dissipation liquid flow channels 104a disposed on the first outer wall 31 and penetrating the first outer wall 31 along the third direction A3-A3. The plurality of first heat dissipation liquid flow channels 104a are arranged at intervals along the second direction A2-A2. Please refer to... Figure 10 As shown, the first heat dissipation liquid flow channel 103a and the second heat dissipation liquid flow channel 103b, which form a group, are both exposed in the corresponding first heat dissipation liquid flow opening 104a.

[0088] In the embodiment illustrated in the present invention, the heat dissipation liquid flow channel 104 further includes a plurality of second heat dissipation liquid flow channels 104b disposed on the first outer wall 31 and penetrating the first outer wall 31 along the third direction A3-A3. The plurality of second heat dissipation liquid flow channels 104b are arranged at intervals along the second direction A2-A2. The plurality of first heat dissipation liquid flow channels 104a are located in the first row (e.g., the upper row), and the plurality of second heat dissipation liquid flow channels 104b are located in the second row (e.g., the lower row) parallel to the first row. Please refer to... Figure 10 As shown, the fifth heat dissipation liquid flow channel 103e and the sixth heat dissipation liquid flow channel 103f, which form a group, are both exposed in the corresponding second heat dissipation liquid flow channel 104b.

[0089] Please combine Figure 3As shown in the illustrated embodiment of the present invention, the plurality of first heat dissipation fluid flow grooves 104a and the plurality of second heat dissipation fluid flow grooves 104b are all located on the first outer wall portion 311. In other words, neither the first heat dissipation fluid flow groove 104a nor the second heat dissipation fluid flow groove 104b is provided at the second outer wall portion 312 or at the joint 313 between the first outer wall portion 311 and the second outer wall portion 312. This design of the first outer wall portion 311 and the second outer wall portion 312 of the present invention is advantageous for providing the first heat dissipation fluid flow grooves 104a and the second heat dissipation fluid flow grooves 104b on the larger area of ​​the first outer wall portion 311, avoiding manufacturing and structural strength problems caused by providing the first heat dissipation fluid flow grooves 104a or the second heat dissipation fluid flow grooves 104b at the joint 313.

[0090] Please combine Figure 3 As shown, the second outer wall 32 abuts against the first support portion 122 and the second support portion 123. The second outer wall 32 includes a body portion 321 supported on the first support portion 122 and the second support portion 123, a first fixing piece 322 bent inward from the body portion 321, and a second fixing piece 323 bent inward from the body portion 321. The first fixing piece 322 is fixed to the first fixing groove 1221, and the second fixing piece 323 is fixed to the second fixing groove 1231.

[0091] The main body 321 includes a middle portion 3211, a first extension 3212 connected to the middle portion 3211 and located on one side of the middle portion 3211, and a second extension 3213 connected to the middle portion 3211 and located on the other side of the middle portion 3211. To improve the structural strength of the middle portion 3211, the middle portion 3211 is also provided with a plurality of reinforcing ribs.

[0092] Please combine Figure 1 as well as Figure 14 As shown in the illustrated embodiment of the present invention, the electrical connector 100 includes a receiving space 170 formed by the first support portion 122, the second support portion 123, the main body portion 121, and the intermediate portion 3211. The receiving space 170 is located outside the mating slot 101 to accommodate the positioning protrusion (not shown) of the mating connector.

[0093] In the embodiment illustrated in the present invention, the electrical connector 100 further includes an L-shaped first cavity 171 formed by the second outer wall 32, the third outer wall 33, the main body portion 121, and the first support portion 122. The first extended bottom wall 152 is located at the bottom of the first cavity 171. The first heat dissipation liquid flow opening 1521 communicates with the first cavity 171.

[0094] Similarly, in the embodiment illustrated in the present invention, the electrical connector 100 further includes an L-shaped second cavity 172 formed by the second outer wall 32, the fourth outer wall 34, the main body portion 121 and the second support portion 123, the second extended bottom wall 153 being located at the bottom of the second cavity 172, and the second heat dissipation liquid flow opening 1531 communicating with the second cavity 172.

[0095] Please combine Figure 3 As shown in the illustrated embodiment of the present invention, the second outer wall 32 is further provided with an extension protrusion 324 integrally extending from the middle portion 3211 of the body portion 321. The extension protrusion 324 extends out of the mating surface 10. The extension protrusion 324 is provided with at least one locking hole 3241 penetrating the extension protrusion 324 along the third direction A3-A3. The locking hole 3241 is configured to cooperate with the locking protrusion (not shown) of the mating connector. In the illustrated embodiment of the present invention, the receiving space 170 is connected to the mating slot 101 through a plurality of sets of the seventh heat dissipation liquid flow channels 103g and the eighth heat dissipation liquid flow channels 103h. The first cavity 171 is connected to the mating slot 101 through at least one set of the seventh heat dissipation liquid flow channels 103g and the eighth heat dissipation liquid flow channels 103h. The second cavity 172 is connected to the docking slot 101 through at least one set of the seventh heat dissipation liquid flow channel 103g and the eighth heat dissipation liquid flow channel 103h.

[0096] In the embodiment illustrated in the present invention, the main body 321 is provided with a heat dissipation liquid flow through hole 3214 extending through the main body 321 along the third direction A3-A3, and the heat dissipation liquid flow through hole 3214 is connected to the accommodating space 170.

[0097] Please combine Figure 3 as well as Figure 29As shown, the third outer wall 33 is provided with a first protrusion 331 that is at least partially received in the first retaining groove 131. The top of the first protrusion 331 abuts against the first retaining surface 132 to prevent the third outer wall 33 from disengaging upward from the third wall portion 13 of the insulating body 1 after installation. In the embodiment illustrated in the present invention, the first protrusion 331 is formed by punching inward from the third outer wall 33.

[0098] Similarly, the fourth outer wall 34 is provided with a second protrusion 341 that is at least partially received in the second retaining groove 141. The top of the second protrusion 341 abuts against the second retaining surface 142 to prevent the fourth outer wall 34 from disengaging upward from the fourth wall portion 14 of the insulating body 1 after installation. In the embodiment illustrated in the present invention, the second protrusion 341 is formed by punching inward from the fourth outer wall 34.

[0099] Please combine Figures 20 to 24 As shown in the illustrated embodiment of the present invention, each conductive terminal 2 includes a fixing portion 21 fixed to other components, an elastic contact arm 22 extending from one end of the fixing portion 21, and a tail portion 23 extending from the other end of the fixing portion 21. The elastic contact arm 22 includes a contact portion 221 protruding into the mating slot 101 and configured for electrical connection with the mating connector, and an end portion 222 connected to the contact portion 221. The end portion 222 has an end face 2221.

[0100] Please combine Figures 16 to 21 As shown, the electrical connector 100 includes a terminal module 20 mounted in a mounting groove 102 of the insulating body 1. In the embodiment illustrated in the present invention, the terminal module 20 includes a first terminal module 20a and a second terminal module 20b.

[0101] The first terminal module 20a includes a first insulating block 4a, a plurality of first conductive terminals 2a fixed to the first insulating block 4a, and a first metal grounding piece 5a mounted on the first insulating block 4a.

[0102] Please combine Figure 5 As shown, the first insulating block 4a is provided with a plurality of first dovetail protrusions 4a1 for insertion into a plurality of first dovetail grooves 1511 and a plurality of first heat dissipation liquid flow through holes 4a2 extending through the first insulating block 4a along the first direction A1-A1. The plurality of first heat dissipation liquid flow through holes 4a2 are arranged at intervals along the second direction A2-A2.

[0103] In one embodiment of the present invention, the plurality of first conductive terminals 2a are embedded in the first insulating block 4a. Figure 24As shown, the plurality of first conductive terminals 2a include a plurality of first differential pair signal terminals DP1, a first ground terminal G1 located on one side of each first differential pair signal terminal DP1 along the second direction A2-A2, and a second ground terminal G2 located on the other side of each first differential pair signal terminal DP1 along the second direction A2-A2. Each first differential pair signal terminal DP1 includes a first signal terminal S1 and a second signal terminal S2 arranged adjacent to each other along the second direction A2-A2.

[0104] The fixing part 21 of the first conductive terminal 2a is fixed to the first insulating block 4a, the elastic contact arm 22 of the first conductive terminal 2a extends out of the first insulating block 4a, and the tail part 23 of the first conductive terminal 2a is used to solder and fix it to a circuit board (not shown).

[0105] In the embodiment illustrated in the present invention, the first differential pair signal terminal DP1 adopts a tight coupling design, that is, the distance between the elastic contact arm 22 of the first signal terminal S1 and the elastic contact arm 22 of the second signal terminal S1 is less than the distance between the elastic contact arm 22 of the first signal terminal S1 and the elastic contact arm 22 of the first ground terminal G1, and also less than the distance between the elastic contact arm 22 of the second signal terminal S2 and the elastic contact arm 22 of the second ground terminal G2.

[0106] The elastic contact arm 22 of the first signal terminal S1 includes a first support section 221a connected to the corresponding fixing part 21, a first tilting arm 222a connected to the first support section 221a, and a first contact part 223a connected to the first tilting arm 222a.

[0107] The elastic contact arm 22 of the second signal terminal S2 includes a second support section 221b connected to the corresponding fixing part 21, a second tilting arm 222b connected to the second support section 221b, and a second contact part 223b connected to the second tilting arm 222b.

[0108] The elastic contact arm 22 of the first grounding terminal G1 includes a third support section 221c connected to the corresponding fixing part 21, a third tilting arm 222c connected to the third support section 221c, and a third contact part 223c connected to the third tilting arm 222c.

[0109] The elastic contact arm 22 of the second grounding terminal G2 includes a fourth support section 221d connected to the corresponding fixing part 21, a fourth tilting arm 222d connected to the fourth support section 221d, and a fourth contact part 223d connected to the fourth tilting arm 222d.

[0110] The first contact portion 223a of the first signal terminal S1 is offset outward relative to the first tilting arm 222a of the first signal terminal S1; the second contact portion 223b of the second signal terminal S2 is offset outward relative to the second tilting arm 222b of the second signal terminal S2. In other words, in the first differential pair signal terminals DP1, the distance between the center line of the first contact portion 223a of the first signal terminal S1 and the center line of the second contact portion 223b of the second signal terminal S2 is greater than the distance between the center line of the first tilting arm 222a of the first signal terminal S1 and the center line of the second tilting arm 222b of the second signal terminal S2.

[0111] The width of the third tilting arm 222c of the first grounding terminal G1 along the second direction A2-A2 is generally greater than the width of the first tilting arm 222a of each of the first signal terminals S1 along the second direction A2-A2, and also greater than the width of the second tilting arm 222b of each of the second signal terminals S2 along the second direction A2-A2. This configuration allows the first grounding terminal G1 and the second grounding terminal G2 to provide better shielding for the first differential pair signal terminal DP1 located between them, thereby improving the quality of signal transmission.

[0112] Please combine Figure 20 as well as Figure 24 As shown in the illustrated embodiment of the present invention, regarding the first signal terminal S1, the first support segment 221a has a first width W1 along the second direction A2-A2; the first contact portion 223a has a second width W2 along the second direction A2-A2; and the first support segment 221a has a first thickness T1 along the third direction A3-A3; wherein W1-W2≤0.1mm; W1 / W2≤29 / 19; and W1 / T1≤9 / 5. These parameters of the first signal terminal S1 enable it to maintain signal integrity well during signal transmission, thereby meeting design requirements.

[0113] Those skilled in the art will understand that the proportional relationship between the second support segment 221b and the second contact portion 223b on the second signal terminal S2 is the same as that of the first signal terminal S1, and will not be described again in this invention.

[0114] Please combine Figure 21 as well as Figure 28As shown, the first metal grounding piece 5a is wavy and includes several first abutment portions 5a1, several second abutment portions 5a2, and a first raised portion 5a3 connecting adjacent first abutment portions 5a1 and second abutment portions 5a2. The first abutment portions 5a1 contact the third support section 221c of the first grounding terminal G1, and the second abutment portions 5a2 contact the fourth support section 221d of the second grounding terminal G2, thereby connecting all the first grounding terminals G1 and all the second grounding terminals G2 in series, thus achieving better grounding shielding. The first raised portion 5a3 avoids the first differential pair signal terminal DP1 to prevent short circuits due to contact.

[0115] Please combine Figure 5 As shown, the second terminal module 20b includes a second insulating block 4b, a plurality of second conductive terminals 2b fixed to the second insulating block 4b, and a second metal grounding piece 5b mounted on the second insulating block 4b.

[0116] The second insulating block 4b is provided with a plurality of second dovetail protrusions 4b1 for insertion into a plurality of second dovetail grooves 1512 and a plurality of second heat dissipation liquid flow through holes 4b2 extending through the second insulating block 4b along the first direction A1-A1. The plurality of second heat dissipation liquid flow through holes 4b2 are arranged at intervals along the second direction A2-A2.

[0117] Please combine Figure 23 As shown, in one embodiment of the present invention, the plurality of second conductive terminals 2b are embedded in the second insulating block 4b. The plurality of second conductive terminals 2b include a plurality of second differential pair signal terminals DP2, a third ground terminal G3 located on one side of each second differential pair signal terminal DP2 along the second direction A2-A2, and a fourth ground terminal G4 located on the other side of each second differential pair signal terminal DP2 along the second direction A2-A2. Each second differential pair signal terminal DP2 includes a third signal terminal S3 and a fourth signal terminal S4 arranged adjacent to each other along the second direction A2-A2.

[0118] The fixing part 21 of the second conductive terminal 2b is fixed to the second insulating block 4b, the elastic contact arm 22 of the second conductive terminal 2b extends out of the second insulating block 4b, and the tail part 23 of the second conductive terminal 2b is used to solder and fix it to a circuit board (not shown).

[0119] The elastic contact arm 22 of the third signal terminal S3 includes a fifth support section 221e connected to the corresponding fixing part 21, a fifth tilting arm 222e connected to the fifth support section 221e, and a fifth contact part 223e connected to the fifth tilting arm 222e.

[0120] The elastic contact arm 22 of the fourth signal terminal S4 includes a sixth support section 221f connected to the corresponding fixing part 21, a sixth tilting arm 222f connected to the sixth support section 221f, and a sixth contact part 223f connected to the sixth tilting arm 222f.

[0121] The elastic contact arm 22 of the third grounding terminal G3 includes a seventh support section 221g connected to the corresponding fixing part 21, a seventh tilting arm 222g connected to the seventh support section 221g, and a seventh contact part 223g connected to the seventh tilting arm 222g.

[0122] The elastic contact arm 22 of the fourth grounding terminal G4 includes an eighth support section 221h connected to the corresponding fixing part 21, an eighth tilting arm 222h connected to the eighth support section 221h, and an eighth contact part 223h connected to the eighth tilting arm 222h.

[0123] The fifth contact portion 223e of the third signal terminal S3 is offset outward relative to the fifth tilting arm 222e of the third signal terminal S3; the sixth contact portion 223f of the fourth signal terminal S4 is offset outward relative to the sixth tilting arm 222f of the fourth signal terminal S4. In other words, in the second differential pair signal terminal DP2, the distance between the center line of the fifth contact portion 223e of the third signal terminal S3 and the center line of the sixth contact portion 223f of the fourth signal terminal S4 is greater than the distance between the center line of the fifth tilting arm 222e of the third signal terminal S3 and the center line of the sixth tilting arm 222f of the fourth signal terminal S4.

[0124] The width of the seventh tilting arm 222g of the third grounding terminal G3 along the second direction A2-A2 is generally greater than the width of the fifth tilting arm 222e of each of the third signal terminals S3 along the second direction A2-A2, and also greater than the width of the sixth tilting arm 222f of each of the fourth signal terminals S4 along the second direction A2-A2. This configuration allows the third grounding terminal G3 and the fourth grounding terminal G4 to provide better shielding for the second differential pair signal terminal DP2 located between them, thereby improving the quality of signal transmission.

[0125] Please combine Figure 21 as well as Figure 28As shown, the second metal grounding piece 5b is wavy and includes several third abutment portions 5b1, several fourth abutment portions 5b2, and a second raised portion 5b3 connecting adjacent third abutment portions 5b1 and fourth abutment portions 5b2. The third abutment portions 5b1 contact the seventh support segment 221g of the third grounding terminal G3, and the fourth abutment portions 5b2 contact the eighth support segment 221h of the fourth grounding terminal G4, thus connecting all the third grounding terminals G3 and all the fourth grounding terminals G4 in series for better grounding shielding. The second raised portion 5b3 avoids the second differential pair signal terminal DP2 to prevent short circuits due to contact.

[0126] In the embodiment illustrated in the present invention, the differential pair signal terminals are exposed to the outside of the electrical connector 100 through the heat dissipation fluid flow channel 103 and the heat dissipation fluid flow opening 104 to achieve better heat dissipation. In other words, the differential pair signal terminals can be observed from the outside of the electrical connector 100 through the heat dissipation fluid flow opening 104 and the heat dissipation fluid flow channel 103. Of course, in other embodiments, the ground terminal can also be exposed to the outside of the electrical connector 100 through a corresponding heat dissipation fluid flow channel 103 and a corresponding heat dissipation fluid flow opening 104 to achieve even better heat dissipation.

[0127] Specifically, the elastic contact arm 22 of the first signal terminal S1 in the first differential pair signal terminal DP1 is partially exposed to the first heat dissipation liquid flow channel 103a, and the elastic contact arm 22 of the second signal terminal S2 is partially exposed to the second heat dissipation liquid flow channel 103b; and the elastic contact arm 22 of the first signal terminal S1 is partially exposed to the fifth heat dissipation liquid flow channel 103e, and the elastic contact arm 22 of the second signal terminal S2 is partially exposed to the sixth heat dissipation liquid flow channel 103f.

[0128] Similarly, the elastic contact arm 22 of the third signal terminal S3 in the second differential pair signal terminal DP2 is exposed to the seventh heat dissipation liquid flow channel 103g, and the elastic contact arm 22 of the fourth signal terminal S4 is exposed to the eighth heat dissipation liquid flow channel 103h; and the elastic contact arm 22 of the third signal terminal S3 is exposed to the eleventh heat dissipation liquid flow channel 103k, and the elastic contact arm 22 of the fourth signal terminal S4 is exposed to the twelfth heat dissipation liquid flow channel 103l.

[0129] In the embodiment illustrated in the present invention, the plurality of conductive terminals 2 include the first conductive terminal 2a and the second conductive terminal 2b.

[0130] During assembly, the first terminal module 20a and the second terminal module 20b are assembled along the first direction A1-A1 into the corresponding first mounting groove 102a and second mounting groove 102b; the first insulating block 4a and the second insulating block 4b are locked into the insulating body 1 to prevent them from falling off; the elastic contact arm 22 of the conductive terminal 2 extends into the mating slot 101, wherein the contact portion 221 of the elastic contact arm 22 protrudes into the mating slot 101 to contact the mating connector.

[0131] Please combine Figure 25 as well as Figure 26 As shown in the illustrated embodiment of the present invention, the end portion 222 of the elastic contact arm 22 of the first conductive terminal 2a is spaced apart from the first bottom surface 11c in the first direction A1-A1; the electrical connector 100 is provided with a first gap groove 11d along the first direction A1-A1 between the first bottom surface 11c and the end portion 222 of the elastic contact arm 22 of the first conductive terminal 2a. The end portion 222 of the elastic contact arm 22 of the first conductive terminal 2a extends beyond the first inner wall surface 11b along the third direction A3-A3, such that the end face 2221 of the end portion 222 of the first conductive terminal 2a is located outside the first inner wall surface 11b. In other words, the end face 2221 of the end portion 222 of the first conductive terminal 2a is hidden in the first wall portion 11 along the first direction A1-A1 (i.e., it is not exposed in the docking slot 101 at all), so as to avoid damage to the first conductive terminal 2a by abutting the end face 2221 when the docking connector is inserted into the docking slot 101.

[0132] Similarly, please combine Figure 25 as well as Figure 26As shown in the illustrated embodiment of the present invention, the end portion 222 of the elastic contact arm 22 of the second conductive terminal 2b and the second bottom surface 12c are spaced apart along the first direction A1-A1; the electrical connector 100 is provided with a second gap groove 12d along the first direction A1-A1, located between the second bottom surface 12c and the end portion 222 of the elastic contact arm 22 of the second conductive terminal 2b. The end portion 222 of the elastic contact arm 22 of the second conductive terminal 2b extends beyond the second inner wall surface 12b along the third direction A3-A3, such that the end face 2221 of the end portion 222 of the second conductive terminal 2b is located outside the second inner wall surface 12b. In other words, the end face 2221 of the end portion 222 of the second conductive terminal 2b is hidden in the second wall portion 12 along the first direction A1-A1 (i.e., it is not exposed in the mating slot 101 at all), so as to avoid damage to the second conductive terminal 2b by abutting the end face 2221 when the mating connector is inserted into the mating slot 101.

[0133] In the embodiment illustrated in the present invention, the end portion 222 is further bent from the contact portion 221. In liquid-cooled environments or at higher frequencies, to meet signal integrity requirements, such as increasing the characteristic impedance of the mating point to match the characteristic impedance of other locations, while reducing insertion loss and return loss, the end portion 222 of the conductive terminal 2 needs to be as short as possible. Those skilled in the art will understand that when the end portion 222 is shortened, it is easily damaged by the mating connector due to exposure in the mating slot 101. The end portion 222 of the conductive terminal 2 of the present invention is further bent from the contact portion 221. This design keeps the length of the end portion 222 within a small range while ensuring that the end portion 222 is not damaged by the mating connector.

[0134] Compared to existing technologies, please combine Figure 27 As shown, the electrical connector 100 of this invention is used in environments with a dielectric constant (DK) greater than 1, such as liquid-cooled environments. Liquid (e.g., coolant) flows through the heat dissipation liquid flow channel 103, the heat dissipation liquid flow opening 104, the first heat dissipation liquid flow opening 1521, the second heat dissipation liquid flow opening 1531, the first heat dissipation liquid flow through-hole 4a2, and the second heat dissipation liquid flow through-hole 4b2, thereby carrying away the heat generated when the electrical connector 100 and the mating connector are working, improving the heat dissipation performance of the electrical connector 100. Furthermore, the heat dissipation design of this invention promotes liquid flow, thereby minimizing the formation of air bubbles in the liquid; even if air bubbles are formed, they can be promptly discharged with the liquid flow, thus reducing the risk of use.

[0135] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present invention should be based on those skilled in the art. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. An electrical connector (100), characterized in that, include: An insulating body (1) includes a plurality of walls, a mating surface (10), and a mating slot (101) penetrating the mating surface (10); the plurality of walls include a first wall (11), the first wall (11) having a heat dissipation liquid flow groove (103) communicating with the mating slot (101); the mating slot (101) is configured to be inserted into a mating connector along a first direction (A1-A1); A plurality of conductive terminals (2), each conductive terminal (2) including a resilient contact arm (22), the resilient contact arm (22) including a contact portion (221) protruding into the mating slot (101) and configured to be electrically connected to the mating connector; and A metal casing (3) includes several outer walls covering the insulating body (1). The several outer walls include a first outer wall (31). The first outer wall (31) includes a first outer wall portion (311) and a second outer wall portion (312) that is fastened and fixed together with the first outer wall portion (311). The size of the first outer wall portion (311) along the second direction (A2-A2) is larger than the size of the second outer wall portion (312) along the second direction (A2-A2). The first outer wall portion (311) is provided with a heat dissipation liquid flow groove (104) that penetrates the first outer wall portion (311) along a third direction (A3-A3). The heat dissipation liquid flow groove (104) is connected to the heat dissipation liquid flow groove (103). The first direction (A1-A1), the second direction (A2-A2), and the third direction (A3-A3) are perpendicular to each other. The heat dissipation liquid flow groove (104) is not provided at the joint (313) between the first outer wall portion (311) and the second outer wall portion (312).

2. The electrical connector (100) as claimed in claim 1, characterized in that: The plurality of conductive terminals (2) include a first differential pair signal terminal (DP1), a first ground terminal (G1) located on one side of the first differential pair signal terminal (DP1) along the second direction (A2-A2), and a second ground terminal (G2) located on the other side of the first differential pair signal terminal (DP1) along the second direction (A2-A2); the first differential pair signal terminal (DP1) includes a first signal terminal (S1) and a second signal terminal (S2) arranged adjacent to each other along the second direction (A2-A2); The first differential pair signal terminal (DP1) is exposed to the outside of the electrical connector (100) through the heat dissipation fluid flow channel (103) and the heat dissipation fluid flow opening (104).

3. The electrical connector (100) as described in claim 2, characterized in that: The plurality of wall portions include a second wall portion (12) opposite to the first wall portion (11), a third wall portion (13) connecting one end of the first wall portion (11) and one end of the second wall portion (12), and a fourth wall portion (14) connecting the other end of the first wall portion (11) and the other end of the second wall portion (12); the fourth wall portion (14) is disposed opposite to the third wall portion (13); the mating slot (101) is formed by at least the first wall portion (11), the second wall portion (12), the third wall portion (13) and the fourth wall portion (14); The heat dissipation liquid flow channel (103) includes a first heat dissipation liquid flow channel (103a) and a second heat dissipation liquid flow channel (103b). The first heat dissipation liquid flow channel (103a) and the second heat dissipation liquid flow channel (103b) are spaced apart along the second direction (A2-A2). The elastic contact arm (22) of the first signal terminal (S1) is partially exposed in the first heat dissipation liquid flow channel (103a), and the elastic contact arm (22) of the second signal terminal (S2) is partially exposed in the second heat dissipation liquid flow channel (103b).

4. The electrical connector (100) as described in claim 3, characterized in that: The heat dissipation liquid flow channel (103) includes a third heat dissipation liquid flow channel (103c) and a fourth heat dissipation liquid flow channel (103d) disposed on the first wall portion (11) and passing through the mating surface (10) along the first direction (A1-A1). The third heat dissipation liquid flow channel (103c) and the fourth heat dissipation liquid flow channel (103d) are spaced apart along the second direction (A2-A2). The third heat dissipation liquid flow channel (103c) is connected to the first heat dissipation liquid flow channel (103a), and the fourth heat dissipation liquid flow channel (103d) is connected to the second heat dissipation liquid flow channel (103b).

5. The electrical connector (100) as described in claim 3, characterized in that: The heat dissipation liquid flow channel (103) includes a fifth heat dissipation liquid flow channel (103e) and a sixth heat dissipation liquid flow channel (103f) disposed on and through the first wall portion (11). The fifth heat dissipation liquid flow channel (103e) and the sixth heat dissipation liquid flow channel (103f) are spaced apart along the second direction (A2-A2). The fifth heat dissipation liquid flow channel (103e) is aligned with and spaced apart from the first heat dissipation liquid flow channel (103a) along the first direction (A1-A1). The sixth heat dissipation liquid flow channel (103f) is aligned with and spaced apart from the second heat dissipation liquid flow channel (103b) along the first direction (A1-A1). The elastic contact arm (22) of the first signal terminal (S1) is partially exposed in the fifth heat dissipation liquid flow channel (103e), and the elastic contact arm (22) of the second signal terminal (S2) is partially exposed in the sixth heat dissipation liquid flow channel (103f).

6. The electrical connector (100) as claimed in claim 3, characterized in that: The first outer wall (31) covers the first wall portion (11), and the plurality of outer walls further include a second outer wall (32) covering the second wall portion (12), a third outer wall (33) covering the third wall portion (13), and a fourth outer wall (34) covering the fourth wall portion (14); the heat dissipation liquid flow groove (104) includes a first heat dissipation liquid flow groove (104a) disposed on the first outer wall (31) and penetrating the first outer wall (31) along the third direction (A3-A3), and the first heat dissipation liquid flow groove (103a) and the second heat dissipation liquid flow groove (103b) are both exposed in the first heat dissipation liquid flow groove (104a).

7. The electrical connector (100) as claimed in claim 6, characterized in that: The second wall portion (12) is provided with a main body portion (121), a first support portion (122) protruding from the main body portion (121) along the third direction (A3-A3) away from the first wall portion (11), and a second support portion (123) protruding from the main body portion (121) along the third direction (A3-A3) away from the first wall portion (11). The first support portion (122) and the second support portion (123) are spaced apart along the second direction (A2-A2). The first support portion (122) is provided with a first fixing groove (1221), and the second support portion (123) is provided with a second fixing groove (1231). The second outer wall (32) is provided with a body part (321) supported on the first support part (122) and the second support part (123), a first fixing piece (322) bent inward from the body part (321), and a second fixing piece (323) bent inward from the body part (321). The first fixing piece (322) is fixed to the first fixing groove (1221), and the second fixing piece (323) is fixed to the second fixing groove (1231).

8. The electrical connector (100) as claimed in claim 7, characterized in that: The electrical connector (100) includes a receiving space (170) surrounded by the first support portion (122), the second support portion (123), the main body portion (121) and the body portion (321), the receiving space (170) being located outside the mating slot (101); The second outer wall (32) is provided with an extension protrusion (324) that extends integrally from the body part (321), the extension protrusion (324) extends out of the mating surface (10), and the extension protrusion (324) is provided with at least one locking hole (3241) that passes through the extension protrusion (324) along the third direction (A3-A3). The receiving space (170) is configured to partially receive the docking connector, and the locking hole (3241) is configured to engage with the locking protrusion of the docking connector.

9. The electrical connector (100) as claimed in claim 8, characterized in that: The heat dissipation liquid flow channel (103) includes a seventh heat dissipation liquid flow channel (103g) and an eighth heat dissipation liquid flow channel (103h) disposed on the second wall portion (12) and penetrating the second wall portion (12). The seventh heat dissipation liquid flow channel (103g) and the eighth heat dissipation liquid flow channel (103h) are spaced apart along the second direction (A2-A2). The seventh heat dissipation liquid flow channel (103g) and the eighth heat dissipation liquid flow channel (103h) are both connected to the docking slot (101) and the receiving space (170) along the third direction (A3-A3). The main body (321) is provided with a heat dissipation liquid flow through hole (3214) that runs through the main body (321) along the third direction (A3-A3), and the heat dissipation liquid flow through hole (3214) is connected to the accommodating space (170).

10. The electrical connector (100) as claimed in claim 9, characterized in that: The heat dissipation liquid flow channel (103) includes a ninth heat dissipation liquid flow channel (103i) and a tenth heat dissipation liquid flow channel (103j) disposed on the second wall portion (12) and passing through the mating surface (10) along the first direction (A1-A1). The ninth heat dissipation liquid flow channel (103i) and the tenth heat dissipation liquid flow channel (103j) are spaced apart along the second direction (A2-A2). The ninth heat dissipation liquid flow channel (103i) is connected to the seventh heat dissipation liquid flow channel (103g), and the tenth heat dissipation liquid flow channel (103j) is connected to the eighth heat dissipation liquid flow channel (103h).

11. The electrical connector (100) as claimed in claim 1, characterized in that: The insulating body (1) includes a mounting surface (16) and a mounting groove (102) penetrating the mounting surface (16), the mounting groove (102) being connected to the docking slot (101); The electrical connector (100) includes a terminal module (20) installed in the mounting groove (102). The terminal module (20) includes an insulating block. A plurality of conductive terminals (2) are fixed to the insulating block. The insulating block is provided with a heat dissipation liquid flow through hole that runs through the insulating block along the first direction (A1-A1) and communicates with the mating slot (101).

12. The electrical connector (100) as claimed in claim 2, characterized in that: The elastic contact arm (22) of the first signal terminal (S1) includes a first support section (221a), a first tilting arm (222a) connected to the first support section (221a), and a first contact portion (221) connected to the first tilting arm (222a); the contact portion (221) includes the first contact portion (221); The first support segment (221a) has a first width W1 along the second direction (A2-A2); the first contact portion (221) has a second width W2 along the second direction (A2-A2); the first support segment (221a) has a first thickness T1 along the third direction (A3-A3); wherein W1-W2≤0.1mm; W1 / W2≤29 / 19; W1 / T1≤9 / 5.

13. The electrical connector (100) as claimed in claim 2, characterized in that: The first wall portion (11) is provided with a first guide slope (11a) connected to the mating surface (10), a first inner wall surface (11b) connected to the first guide slope (11a) and extending along the first direction (A1-A1), and a first bottom surface (11c) connected to the first inner wall surface (11b); The elastic contact arm (22) of the conductive terminal (2) includes an end portion (222) connected to the contact portion (221), the end portion (222) and the first bottom surface (11c) being spaced apart in the first direction (A1-A1); the electrical connector (100) is provided with a first gap groove (11d) located between the first bottom surface (11c) and the end portion (222) along the first direction (A1-A1); The end portion (222) is provided with an end surface (2221), and the end portion (222) extends beyond the first inner wall surface (11b) along the third direction (A3-A3) so that the end surface (2221) is located outside the first inner wall surface (11b).

14. An application of an electrical connector (100) in a liquid-cooled environment, characterized in that, The electrical connector (100) is the electrical connector (100) as described in any one of claims 1 to 13, the electrical connector (100) is immersed in the liquid in the liquid-cooled environment, the liquid can flow through the heat dissipation liquid flow slot (104) and the heat dissipation liquid flow groove (103) to remove the heat generated by the electrical connector (100).

Images