First cable assembly and electric connector

Abstract

A first cable assembly comprises a first cable, a first terminal mounting block and a first clamping sleeve. The first terminal installation block is fixed on the first cable, and the first terminal installation block comprises a second clamping part. The first clamping sleeve comprises a first side wall part, a second side wall part, a first containing space, a first connecting wall and a first clamping groove. The first cable is at least partially accommodated in the first accommodating space. The second clamping part crosses the first connecting wall to be clamped in the first clamping groove. By arranging the first clamping sleeve, the installation reliability of the first cable can be improved. In addition, the adaptability can be improved by adjusting the first clamping sleeve. The utility model also discloses an electric connector with the first cable assembly.

Description

Technical Field

[0001] This utility model relates to a first cable assembly and an electrical connector, belonging to the field of connector technology. Background Technology

[0002] Connector assemblies in related technologies include electrical connectors and mating connectors that mate with the electrical connectors. The electrical connector includes a first housing and conductive terminals disposed within the first housing. The mating connector includes a second housing and mating conductive terminals disposed within the second housing. When the electrical connector and the mating connector mate, the conductive terminals contact the mating conductive terminals.

[0003] With the rapid development of industries such as electric vehicles, how to transfer electricity from the charging dock to the battery pack is a technical problem faced by technicians in this field. Due to factors such as accumulated tolerances, the mating of electrical connectors and mating connectors in related technologies is difficult and inconvenient to use.

[0004] In related technologies, when the conductive terminals of electrical connectors mate with the conductive terminals of mating connectors, it is often necessary to open the cover and use external tools to achieve the mating process. This mating method is cumbersome. Opening the cover means exposing the relevant conductive components, which poses a safety hazard of electric shock.

[0005] In addition, there is room for improvement in the sealing design of electrical connectors and mating connectors in related technologies. Utility Model Content

[0006] The purpose of this invention is to provide a first cable assembly and an electrical connector with an improved structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a first cable assembly, comprising:

[0008] First cable;

[0009] A first terminal mounting block, the first terminal mounting block being fixed to a first cable, the first terminal mounting block including a second retaining portion; and

[0010] The first card holder includes a first side wall portion, a second side wall portion, a first accommodating space located between the first side wall portion and the second side wall portion, a first connecting wall connecting the first side wall portion and the second side wall portion and mounted on the first accommodating space, and a first card holder groove located at one end of the first connecting wall.

[0011] The first cable is at least partially housed in the first receiving space, and the second holding part is held in the first holding slot.

[0012] As a further improvement of the present invention, the first connecting wall is provided with a first mating surface, which is locked to the first housing.

[0013] As a further improvement of the present invention, the first side wall is provided with a first groove, the second side wall is provided with a second groove, and the first groove, the second groove and the first accommodating space together form a first slot that at least partially accommodates the first cable.

[0014] As a further improvement of this utility model, the first retaining sleeve is an insulating retaining sleeve.

[0015] As a further improvement of the present invention, the first cable includes a first core, the first core having a first surface, a second surface opposite to the first surface, and a first mounting hole penetrating the first surface and the second surface;

[0016] The first terminal mounting block includes a first base and a first extension. Both the first base and the first extension are cylindrical. The diameter of the first base is larger than the diameter of the first extension. The first extension is fixed in the first mounting hole, and the first base protrudes from the first surface.

[0017] As a further improvement of the present invention, the second holding part protrudes from the first base, and the second holding part and the first extension part are respectively located on both sides of the first base.

[0018] As a further improvement of this utility model, the second holding part is cylindrical, and the diameter of the first base is larger than the diameter of the second holding part.

[0019] As a further improvement of the present invention, the first terminal mounting block includes a first terminal mating hole.

[0020] As a further improvement of the present invention, the first cable assembly also includes a first toothed sleeve installed in the first terminal mating hole.

[0021] As a further improvement of the present invention, the first terminal mating hole is a first threaded hole; the first toothed sleeve is in the shape of a coiled spring and is fixed in the first threaded hole; the inner wall of the first terminal mounting block is provided with a first blocking protrusion protruding into the first terminal mating hole, and the first blocking protrusion limits the first toothed sleeve to prevent the first toothed sleeve from disengaging from the first terminal mating hole.

[0022] This utility model also discloses an electrical connector, which includes:

[0023] A first housing, the first housing including a first terminal receiving groove and a first locking surface; and

[0024] The first cable assembly is the aforementioned first cable assembly. The first cable assembly is at least partially installed in the first terminal receiving groove. The first connecting wall of the first cable assembly is provided with a first mating surface, and the first mating surface is locked with the first locking surface.

[0025] As a further improvement of the present invention, the first housing is provided with an inclined first guide slope, which guides the first cable assembly to be inserted into the first terminal receiving groove.

[0026] As a further improvement to this utility model, the electrical connector also includes:

[0027] A first sealing ring, comprising a first sleeve portion fitted onto the first cable; and

[0028] Tail cover, the tail cover is fixed to the first housing.

[0029] As a further improvement of the present invention, the first sealing ring includes a first extension piece and a second extension piece extending from the first sleeve portion, and the first extension piece and the second extension piece are disposed between the tail cover and the first cable.

[0030] As a further improvement of the present invention, the tail cover includes a first frame portion, the first frame portion having a first mounting slot, a first inner wall surface exposed in the first mounting slot, and a second inner wall surface exposed in the first mounting slot and opposite to the first inner wall surface, a first cable passing through the first mounting slot, a first extension piece being held between the first cable and the first inner wall surface, and a second extension piece being held between the first cable and the second inner wall surface.

[0031] Compared to existing technologies, this invention improves the installation reliability of the first cable by setting a first retaining sleeve. Furthermore, the adaptability is increased by adjusting the first retaining sleeve. Attached Figure Description

[0032] Figure 1 This is a three-dimensional schematic diagram of the connector components in the first embodiment of this utility model when they are mated together.

[0033] Figure 2 yes Figure 1 A three-dimensional diagram from another angle;

[0034] Figure 3 yes Figure 1 An exploded 3D view showing that the electrical connector and the mating connector are separate from each other;

[0035] Figure 4 yes Figure 3 Another perspective of the exploded 3D view;

[0036] Figure 5 yes Figure 4 Partial exploded 3D view of CEC connectors;

[0037] Figure 6 yes Figure 5 Another perspective of a partially exploded 3D view;

[0038] Figure 7 yes Figure 6 An exploded perspective view of the tail cap, first sealing ring, first cable, first terminal mounting block, second cable, and second terminal mounting block.

[0039] Figure 8 yes Figure 7 Another perspective of the exploded 3D view;

[0040] Figure 9 yes Figure 7 An exploded perspective view of the first terminal mounting block and the second terminal mounting block.

[0041] Figure 10 yes Figure 9 Another perspective of the exploded 3D view;

[0042] Figure 11 It is along Figure 3 Schematic diagram of the cross section of the DD line;

[0043] Figure 12 yes Figure 11 A partially exploded view, showing the second sealing ring and the retaining cap separated;

[0044] Figure 13 It is along Figure 3 Schematic diagram of the cross section of the EE line;

[0045] Figure 14 yes Figure 13 A partially exploded view, showing the second sealing ring and the retaining cap separated;

[0046] Figure 15 This is a three-dimensional schematic diagram of the connector components in the second embodiment of this utility model when they are mated together.

[0047] Figure 16 yes Figure 15 A three-dimensional schematic diagram of the tail cap, first sealing ring, first cable, first terminal mounting block, second cable, second terminal mounting block, first retaining sleeve and second retaining sleeve assembled together;

[0048] Figure 17 yes Figure 16 A partial exploded view, in which the first card holder and the second card holder are separated;

[0049] Figure 18 yes Figure 17 Further exploded view;

[0050] Figure 19 yes Figure 18 Another perspective of the exploded 3D view;

[0051] Figure 20 It is along Figure 15 Schematic diagram of the cross section of the HH line;

[0052] Figure 21 yes Figure 20 A magnified view of part J within the middle frame;

[0053] Figure 22 It is along Figure 15 Schematic diagram of the cross section of Line II;

[0054] Figure 23 yes Figure 22 A magnified view of the K section within the middle frame;

[0055] Figure 24 yes Figure 2 A three-dimensional schematic diagram of the mating connector from another angle, in which the first and second rotating covers have not yet been rotated into place;

[0056] Figure 25 yes Figure 24 A three-dimensional schematic diagram of another state, in which the first rotating cover and the second rotating cover have been rotated into place;

[0057] Figure 26 yes Figure 2 A partial exploded perspective view of the mating connector, showing the locking device and mounting components separated.

[0058] Figure 27 yes Figure 26 Another perspective of a partially exploded 3D view;

[0059] Figure 28 yes Figure 25 A partial exploded perspective view of the mating connector, showing the locking mechanism separated out;

[0060] Figure 29 yes Figure 26 Exploded perspective view of the central locking device;

[0061] Figure 30 yes Figure 29 Another perspective of the exploded 3D view;

[0062] Figure 31 yes Figure 2 An exploded perspective view of the mating connector, showing the mounting components separated.

[0063] Figure 32 yes Figure 31 The left view of the installed components;

[0064] Figure 33 yes Figure 30 A three-dimensional diagram of the installed components in their initial state;

[0065] Figure 34 yes Figure 33 A partial exploded view, in which the pin is separated;

[0066] Figure 35 yes Figure 34 The left view;

[0067] Figure 36 It is along Figure 33 Schematic diagram of the cross section of the MM line;

[0068] Figure 37 It is along Figure 32 Schematic diagram of the cross section of the LL line;

[0069] Figure 38 yes Figure 34 Further exploded view;

[0070] Figure 39 yes Figure 38 Another perspective of the exploded 3D view;

[0071] Figure 40 It is to remove Figure 25 An exploded 3D view of the locking device and the components after installation.

[0072] Figure 41 yes Figure 40 Another perspective of a partially exploded 3D view;

[0073] Figure 42 yes Figure 40 Further partial exploded view;

[0074] Figure 43 yes Figure 42 Another perspective of a partially exploded 3D view;

[0075] Figure 44 yes Figure 42 An exploded perspective view of the first conductive terminal module, a portion of the first terminal module, the second conductive terminal module, and a portion of the second terminal module.

[0076] Figure 45 yes Figure 44 Another perspective of the exploded 3D view;

[0077] Figure 46 It is to remove Figure 25The locking device and the partially exploded perspective view after the components are installed are shown, in which the third mating seal ring, the fourth mating seal ring and the second rotating cover are separated.

[0078] Figure 47 yes Figure 46 Another perspective of a partially exploded 3D view;

[0079] Figure 48 yes Figure 46 Further partial exploded view, in which the second retaining sleeve is further separated;

[0080] Figure 49 It is along Figure 3 A cross-sectional view of the FF line;

[0081] Figure 50 yes Figure 49 A magnified view of the area N within the middle frame;

[0082] Figure 51 yes Figure 50 A cross-sectional view in another embodiment;

[0083] Figure 52 yes Figure 50 A cross-sectional view of another state, in which the first rotating cover is not rotated into place;

[0084] Figure 53 It is along Figure 3 Schematic diagram of the cross section of the GG line;

[0085] Figure 54 yes Figure 53 A magnified view of the area O within the middle frame;

[0086] Figure 55 yes Figure 54 A cross-sectional view in another embodiment;

[0087] Figure 56 yes Figure 54 A cross-sectional view of another state, in which the second rotating cover is not rotated into place;

[0088] Figure 57 yes Figure 2 A top view showing the locking device in the unlocked position;

[0089] Figure 58 yes Figure 57 A top view of another state, in which the locking device is in the locking position;

[0090] Figure 59 It is along Figure 57 Schematic diagram of the cross section of the PP line;

[0091] Figure 60 It is along Figure 58 A cross-sectional view of the QQ line;

[0092] Figure 61 yes Figure 60 A magnified view of the area R within the middle frame;

[0093] Figure 62 It is along Figure 1 A cross-sectional view of the BB line, showing that the electrical connector and the mating connector are separated from each other;

[0094] Figure 63 It is along Figure 1 A cross-sectional view of the CC line. Detailed Implementation

[0095] 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.

[0096] 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” used in the specification and claims of this invention are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0097] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish the 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 utility model 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" covers the element following "comprising" or "including" and its equivalents, which does not exclude that the element preceding "comprising" or "including" may also include other elements. In this utility model, the word "several" means two or more.

[0098] Please refer to Figures 1 to 63 As shown, this utility model discloses a connector assembly, which includes an electrical connector 100 and a mating connector 200 that mates with the electrical connector 100. In one embodiment of this utility model, the connector assembly is used in a new energy vehicle to transfer power from a charging dock to a battery pack. In the embodiment illustrated in this utility model, the electrical connector 100 is a plug-to-cable connector used for connecting to a power source; the mating connector 200 is a socket-to-plate connector used for connecting to a battery pack.

[0099] Please combine Figure 5 as well as Figure 6 As shown in the illustrated embodiment of this utility model, the electrical connector 100 includes a first housing 1a, a first cable assembly 2a at least partially disposed in the first housing 1a, a second cable assembly 3a at least partially disposed in the first housing 1a, a first sealing ring 4a cooperating with the first cable assembly 2a and the second cable assembly 3a, a tail cap 5a fixed to the first housing 1a, a second sealing ring 6a installed in the first housing 1a, and a retaining cap 7a fixed to the first housing 1a.

[0100] In one embodiment of this utility model, the first housing 1a is made of insulating material and includes a first main body 1a1, a first mounting portion 1a2 integrally extending from the first main body 1a1 along a first direction A1-A1 (e.g., front-to-back direction), and a first shielding portion 1a3 integrally extending from the first main body 1a1 along a second direction A2-A2 (e.g., vertical direction). The first direction A1-A1 and the second direction A2-A2 are perpendicular to each other. The first shielding portion 1a3 protrudes downward from the first main body 1a1 and the first mounting portion 1a2 along the second direction A2-A2.

[0101] The first main body 1a1 includes a first outer wall portion 1a11, a first inner wall portion 1a12, a first raised portion 1a13 protruding upward from the first outer wall portion 1a11 along the second direction A2-A2, a second raised portion 1a14 protruding upward from the first outer wall portion 1a11 along the second direction A2-A2, a first terminal receiving groove 1a15 located between the first outer wall portion 1a11 and the first inner wall portion 1a12, a second terminal receiving groove 1a16 located between the first outer wall portion 1a11 and the first inner wall portion 1a12, and a first raised portion 1a17 protruding downward from the first inner wall portion 1a12 along the second direction A2-A2.

[0102] The first raised portion 1a13 and the second raised portion 1a14 are spaced apart along a third direction A3-A3 (e.g., left-right direction). A first recessed space 1a131 is provided on the inner side of the first raised portion 1a13 (e.g., ...). Figure 11As shown), the first recessed space 1a131 is connected to the first terminal receiving groove 1a15 along the second direction A2-A2. Similarly, a second recessed space 1a141 is provided on the inner side of the second protrusion 1a14 (as shown). Figure 13 As shown, the second recessed space 1a141 is connected to the second terminal receiving groove 1a16 along the second direction A2-A2. The third direction A3-A3 is perpendicular to the first direction A1-A1 and the second direction A2-A2.

[0103] Please combine Figure 11 As shown in the illustrated embodiment of this utility model, the inner side of the first outer wall portion 1a11 is further provided with a first guide slope 1a111 inclined along the first direction A1-A1 and a first locking surface 1a112 extending along the second direction A2-A2. The first guide slope 1a111 is configured to guide the first cable assembly 2a into the first terminal receiving groove 1a15. The first locking surface 1a112 is configured to lock with the first cable assembly 2a when the first cable assembly 2a is inserted into place, so as to prevent the first cable assembly 2a from falling out of the first terminal receiving groove 1a15.

[0104] Similarly, please combine Figure 13 As shown in the illustrated embodiment of this utility model, the inner side of the first outer wall portion 1a11 is further provided with a second guide slope 1a113 inclined along the first direction A1-A1 and a second locking surface 1a114 extending along the second direction A2-A2. The second guide slope 1a113 is configured to guide the second cable assembly 3a into the second terminal receiving groove 1a16. The second locking surface 1a114 is configured to lock with the second cable assembly 3a when the second cable assembly 3a is inserted into place, so as to prevent the second cable assembly 3a from falling out of the second terminal receiving groove 1a16.

[0105] Please combine Figure 5As shown, the first protrusion 1a17 includes a first mounting opening 1a171 communicating with the first terminal receiving groove 1a15 and a second mounting opening 1a172 communicating with the second terminal receiving groove 1a16. In the embodiment illustrated in this utility model, the first mounting opening 1a171 and the second mounting opening 1a172 are arranged at intervals along a third direction A3-A3. Both the first mounting opening 1a171 and the second mounting opening 1a172 are cylindrical holes. The first main body 1a1 includes a first inner surface 1a173 exposed in the first mounting opening 1a171 and at least one first fastening protrusion 1a174 protruding from the first inner surface 1a173. In the embodiment illustrated in this utility model, the first inner surface 1a173 is cylindrical, and there are several first fastening protrusions 1a174 distributed at intervals along the circumference of the first inner surface 1a173. In the embodiment illustrated in this utility model, the first fastening protrusion 1a174 is integrally formed with the first main body 1a1 to improve structural strength. Each first fastening protrusion 1a174 includes a first inclined surface 1a1741 and a first abutting surface 1a1742.

[0106] Similarly, the second main body 1a1 includes a second inner surface 1a175 exposed in the second mounting opening 1a172 and at least one second fastening protrusion 1a176 protruding from the second inner surface 1a175. In the embodiment illustrated in this utility model, the second inner surface 1a175 is cylindrical, and there are several second fastening protrusions 1a176 distributed circumferentially along the second inner surface 1a175. In the embodiment illustrated in this utility model, the second fastening protrusions 1a176 are integrally formed with the first main body 1a1 to improve structural strength. Each second fastening protrusion 1a176 includes a second inclined surface 1a1761 and a second abutting surface 1a1762.

[0107] In the embodiment illustrated in this utility model, a first shielding portion 1a3 is disposed around the periphery of a first protrusion 1a17. A first housing 1a includes a first annular groove 1a4 located between the first shielding portion 1a3 and the first protrusion 1a17. A first inner wall portion 1a12 protrudes downwards into the first annular groove 1a4. The first protrusion 1a17 has a first conical surface 1a177 protruding outwards into the first annular groove 1a4 and a first bottom surface 1a178 located at the bottom of the first protrusion 1a17. In the embodiment illustrated in this utility model, the first protrusion 1a17 has a plurality of first escape holes 1a179 ​​extending along a second direction A2-A2 through the first bottom surface 1a178.

[0108] Please combine Figure 6As shown, the first mounting portion 1a2 has a mounting channel 1a21 communicating with the first terminal receiving groove 1a15 and the second terminal receiving groove 1a16, and a first inner surface 1a22 exposed in the mounting channel 1a21. The first inner surface 1a22 is generally elliptical. The first mounting portion 1a2 also has a plurality of positioning protrusions 1a23 and a plurality of locking protrusions 1a24 located on its outer surface.

[0109] The first shielding portion 1a3 includes a first conical portion 1a31 and a first flange portion 1a32 extending outward from the bottom of the first conical portion 1a31. The first conical portion 1a31 includes a second conical surface 1a311 located on its inner side. Please refer to... Figure 12 As shown in the illustrated embodiment of this utility model, the first conical surface 1a177 and the second conical surface 1a311 have opposite inclination directions to form a flared opening, facilitating the insertion of the guiding element. Please refer to... Figure 5 As shown in the illustrated embodiment of this utility model, the first flange portion 1a32 is provided with a first clearance groove 1a321 and a second clearance groove 1a322 that pass through the first flange portion 1a32 along the second direction A2-A2. The first clearance groove 1a321 and the second clearance groove 1a322 are spaced apart and are both located on the side opposite to the first mounting portion 1a2.

[0110] Please combine Figure 7 as well as Figure 8 As shown, in a first embodiment of the present invention, the first cable assembly 2a includes a first cable 2a1 and a first terminal mounting block 2a2 fixed to the first cable 2a1. In one embodiment of the present invention, the first cable 2a1 is flat and includes a first core 2a11 and a first insulating layer 2a12 wrapped around the first core 2a11. In one embodiment of the present invention, the first core 2a11 is made of aluminum to reduce weight. The first core 2a11 has a first surface 2a111 (e.g., an upper surface), a second surface 2a112 (e.g., a lower surface) opposite to the first surface 2a111, and a first mounting hole 2a110 penetrating the first surface 2a111 and the second surface 2a112 along a second direction A2-A2.

[0111] The first terminal mounting block 2a2 is at least partially fixed in the first mounting hole 2a110. In one embodiment of the present invention, the first terminal mounting block 2a2 is welded to the first core 2a11. In one embodiment of the present invention, the first terminal mounting block 2a2 is made of copper to improve welding quality. Of course, those skilled in the art will understand that in other embodiments of the present invention, the first terminal mounting block 2a2 can also be fixed to the first core 2a11 by other fixing methods, such as riveting. In some embodiments of the present invention, the first cable assembly 2a does not even include the first terminal mounting block 2a2. In this case, the first mounting hole 2a110 serves as the first terminal mating hole 2a23 to contact the mating terminal. The first terminal mounting block 2a2 includes a first base 2a21 and a first extension 2a22 integrally extending from the first base 2a21 along the second direction A2-A2. In the embodiment illustrated in the present invention, both the first base 2a21 and the first extension 2a22 are cylindrical. The diameter of the first base 2a21 is larger than the diameter of the first extension 2a22. The first terminal mounting block 2a2 also includes a first terminal mating hole 2a23. In the embodiment illustrated in this utility model, the first terminal mating hole 2a23 penetrates the first base 2a21 and the first extension 2a22 along the second direction A2-A2. The first terminal mating hole 2a23 is a first threaded hole to improve mating reliability. The first extension 2a22 has a first exposed surface 2a221 that protrudes downwards along the second direction A2-A2 into the first receiving cavity 7a22 (e.g., ...). Figure 10 (As shown).

[0112] Preferably, to further improve the reliability of the connection, in one embodiment of this utility model, the first cable assembly 2a further includes a first threaded sleeve 2a3 installed in the first terminal connection hole 2a23. In the embodiment illustrated in this utility model, the first terminal connection hole 2a23 is a first threaded hole; the first threaded sleeve 2a3 is in the shape of a coiled spring and is fixed in the first threaded hole. Please refer to... Figure 11 As shown, in one embodiment of the present invention, a first blocking protrusion 2a24 protruding into the first terminal mating hole 2a23 is provided on the inner wall of the first extension 2a22. The first blocking protrusion 2a24 is integrally formed with the first extension 2a22. The first blocking protrusion 2a24 is configured to prevent the first dental sleeve 2a3 from disengaging downward from the first terminal mating hole 2a23 along the second direction A2-A2. In one embodiment of the present invention, the first dental sleeve 2a3 is made of stainless steel. Of course, those skilled in the art will understand that in other embodiments of the present invention, the first dental sleeve 2a3 may also be made of other metal materials.

[0113] Please combine Figure 7 as well as Figure 8As shown, in a first embodiment of the present invention, the second cable assembly 3a includes a second cable 3a1 and a second terminal mounting block 3a2 fixed to the second cable 3a1. In one embodiment of the present invention, the second cable 3a1 is flat and includes a second core 3a11 and a second insulating layer 3a12 wrapped around the second core 3a11. In one embodiment of the present invention, the second core 3a11 is made of aluminum to reduce weight. The second core 3a11 has a third surface 3a111 (e.g., an upper surface), a fourth surface 3a112 (e.g., a lower surface) opposite to the third surface 3a111, and a second mounting hole 3a110 penetrating the third surface 3a111 and the fourth surface 3a112 along a second direction A2-A2.

[0114] The second terminal mounting block 3a2 is at least partially fixed in the second mounting hole 3a110. In one embodiment of the present invention, the second terminal mounting block 3a2 is welded to the second core 3a11. In one embodiment of the present invention, the second terminal mounting block 3a2 is made of copper to improve welding quality. Of course, those skilled in the art will understand that in other embodiments of the present invention, the second terminal mounting block 3a2 can also be fixed to the second core 3a11 by other fixing methods, such as riveting. In some embodiments of the present invention, the second cable assembly 3a does not even include the second terminal mounting block 3a2. In this case, the second mounting hole 3a110 serves as the second terminal mating hole 3a23 to contact the mating terminal. The second terminal mounting block 3a2 includes a second base 3a21 and a second extension 3a22 integrally extending from the second base 3a21 along the second direction A2-A2. In the embodiment illustrated in the present invention, both the second base 3a21 and the second extension 3a22 are cylindrical. The diameter of the second base 3a21 is larger than the diameter of the second extension 3a22. The second terminal mounting block 3a2 also includes a second terminal mating hole 3a23. In the embodiment illustrated in this utility model, the second terminal mating hole 3a23 penetrates the second base 3a21 and the second extension 3a22 along the second direction A2-A2. The second terminal mating hole 3a23 is a second threaded hole to improve mating reliability. The second extension 3a22 has a second exposed surface 3a221 that protrudes downward along the second direction A2-A2 into the second receiving cavity 7a32.

[0115] Preferably, to further improve the reliability of the connection, in one embodiment of the present invention, the second cable assembly 3a further includes a second threaded sleeve 3a3 installed in the second terminal connection hole 3a23. In the embodiment illustrated in the present invention, the second terminal connection hole 3a23 is a second threaded hole; the second threaded sleeve 3a3 is in the shape of a coiled spring and is fixed in the second threaded hole. In one embodiment of the present invention, a second blocking protrusion 3a24 protruding into the second terminal connection hole 3a23 is provided on the inner wall of the second extension 3a22. The second blocking protrusion 3a24 is integrally formed with the second extension 3a22. The second blocking protrusion 3a24 is configured to prevent the second threaded sleeve 3a3 from disengaging downward from the second terminal connection hole 3a23 along the second direction A2-A2. In one embodiment of the present invention, the second threaded sleeve 3a3 is made of stainless steel. Of course, those skilled in the art will understand that in other embodiments of the present invention, the second threaded sleeve 3a3 may also be made of other metal materials.

[0116] During assembly, the first extension 2a22 is inserted into the first mounting hole 2a110 and protrudes from the second surface 2a112 of the first core 2a11. The first base 2a21 is located on top of the first core 2a11 and abuts against the first surface 2a111. In the embodiment illustrated in this utility model, the first base 2a21 protrudes upward from the first surface 2a111 along the second direction A2-A2. The first base 2a21 has a first mating surface 2a211 that protrudes upward from the first surface 2a111. The first mating surface 2a211 locks with the first locking surface 1a112 to fix the first cable assembly 2a in the first terminal receiving groove 1a15.

[0117] The second extension 3a22 is inserted into the second mounting hole 3a110 and protrudes from the fourth surface 3a112 of the second core 3a11. The second base 3a21 is located at the top of the second core 3a11 and abuts against the third surface 3a111. In the embodiment illustrated in this utility model, the second base 3a21 protrudes upward from the third surface 3a111 along the second direction A2-A2. The second base 3a21 has a second mating surface 3a211 that protrudes upward from the third surface 3a111. The second mating surface 3a211 locks with the second locking surface 1a114 to fix the second cable assembly 3a in the second terminal receiving groove 1a16.

[0118] Please combine Figures 15 to 23 As shown, in the second embodiment of this utility model, the first cable assembly 2a includes a first cable 2a1, a first terminal mounting block 2a2 fixed to the first cable 2a1, a first toothed sleeve 2a3 mounted on the first terminal mounting block 2a2, and a first retaining sleeve 2a4 that holds the first cable 2a1.

[0119] The first cable 2a1 in the second embodiment of this utility model is the same as the first cable 2a1 in the first embodiment of this utility model. The first dental brace 2a3 in the second embodiment of this utility model is the same as the first dental brace 2a3 in the first embodiment of this utility model. The first terminal mounting block 2a2 in the second embodiment of this utility model is similar to the first terminal mounting block 2a2 in the first embodiment of this utility model, except that the first terminal mounting block 2a2 in the second embodiment of this utility model also has a first holding portion 2a25 protruding from the first base 2a21. The first holding portion 2a25 is generally cylindrical. The first holding portion 2a25 and the first extension portion 2a22 are respectively located on both sides of the first base 2a21. The first terminal mating hole 2a23 further penetrates the first holding portion 2a25.

[0120] Please combine Figures 16 to 19 As shown in the illustrated embodiment of this utility model, the first retaining sleeve 2a4 is made of an insulating material (e.g., nylon) and is generally U-shaped. It includes a first sidewall portion 2a41, a second sidewall portion 2a42, a first receiving space 2a43 located between the first sidewall portion 2a41 and the second sidewall portion 2a42, and a first connecting wall 2a44 connecting the first sidewall portion 2a41 and the second sidewall portion 2a42 and mounted on the first receiving space 2a43. The first sidewall portion 2a41 has a first groove 2a411, and the second sidewall portion 2a42 has a second groove 2a421. The first groove 2a411, the second groove 2a421, and the first receiving space 2a43 together form a first slot for receiving the first cable 2a1. The first connecting wall 2a44 has a certain elastic deformation capability. The first retaining sleeve 2a4 includes a first retaining groove 2a45 located at one end of the first connecting wall 2a44.

[0121] Similarly, please combine Figures 15 to 23 As shown, in the second embodiment of this utility model, the second cable assembly 3a includes a second cable 3a1, a second terminal mounting block 3a2 fixed to the second cable 3a1, a second toothed sleeve 3a3 mounted on the second terminal mounting block 3a2, and a second retaining sleeve 3a4 that holds the second cable 3a1.

[0122] The second cable 3a1 in the second embodiment of this utility model is the same as the second cable 3a1 in the first embodiment of this utility model. The second dental brace 3a3 in the second embodiment of this utility model is the same as the second dental brace 3a3 in the first embodiment of this utility model. The second terminal mounting block 3a2 in the second embodiment of this utility model is similar to the second terminal mounting block 3a2 in the first embodiment of this utility model, except that the second terminal mounting block 3a2 in the second embodiment of this utility model also has a second holding portion 3a25 protruding from the second base 3a21. The second holding portion 3a25 is generally cylindrical. The second holding portion 3a25 and the second extension portion 3a22 are located on opposite sides of the second base 3a21. The second terminal mating hole 3a23 further penetrates the second holding portion 3a25.

[0123] Please combine Figures 16 to 19 As shown in the illustrated embodiment of this utility model, the second retaining sleeve 3a4 is made of an insulating material (e.g., nylon) and is generally U-shaped. It includes a third sidewall portion 3a41, a fourth sidewall portion 2342, a second receiving space 3a43 located between the third sidewall portion 3a41 and the fourth sidewall portion 2342, and a second connecting wall 3a44 connecting the third sidewall portion 3a41 and the fourth sidewall portion 2342 and mounted on the second receiving space 3a43. The third sidewall portion 3a41 has a third groove 3a411, and the fourth sidewall portion 2342 has a fourth groove 3a421. The third groove 3a411, the fourth groove 3a421, and the second receiving space 3a43 together form a second slot for receiving the second cable 3a1. The second connecting wall 3a44 has a certain elastic deformation capability. The second retaining sleeve 3a4 includes a second retaining groove 3a45 located at one end of the second connecting wall 3a44.

[0124] During assembly, the first retaining part 2a25 abuts and deforms the first connecting wall 2a44 so that it can pass through the first connecting wall 2a44 and be retained in the first retaining groove 2a45. At this time, the first connecting wall 2a44 returns to its pre-deformation state to abut against the first retaining part 2a25, thereby preventing the first retaining part 2a25 from disengaging from the first retaining sleeve 2a4. The first connecting wall 2a44 has a first mating surface 2a211 that protrudes upward from the first surface 2a111. The first mating surface 2a211 locks with the first locking surface 1a112 to fix the first cable assembly 2a in the first terminal receiving groove 1a15.

[0125] Similarly, the second retaining part 3a25 abuts and deforms the second connecting wall 3a44 so that it can pass through the second connecting wall 3a44 and be retained in the second retaining groove 3a45. At this time, the second connecting wall 3a44 returns to its state before deformation so as to abut against the second retaining part 3a25, thereby preventing the second retaining part 3a25 from disengaging from the second retaining sleeve 3a4. The second connecting wall 3a44 is provided with a second mating surface 3a211 that protrudes upward from the third surface 3a111. The second mating surface 3a211 locks with the second locking surface 1a114 to fix the second cable assembly 3a in the second terminal receiving groove 1a16.

[0126] Those skilled in the art will understand that when the width, thickness, and other dimensions of the first cable 2a1 and the second cable 3a1 are small, the first retaining sleeve 2a4 and the second retaining sleeve 3a4 facilitate assembly. Furthermore, adjusting the first retaining sleeve 2a4 and the second retaining sleeve 3a4 increases adaptability and reduces the influence of the first cable 2a1 and the second cable 3a1 themselves.

[0127] Please combine Figure 7 as well as Figure 8 As shown, the first sealing ring 4a includes a first socket portion 4a1, a second socket portion 4a2, a first extension piece 4a11 and a second extension piece 4a12 extending from the upper and lower edges of the first socket portion 4a1 along the first direction A1-A1, and a third extension piece 4a21 and a fourth extension piece 4a22 extending from the upper and lower edges of the second socket portion 4a2 along the first direction A1-A1, respectively.

[0128] In the embodiment illustrated in this utility model, the first socket portion 4a1 and the second socket portion 4a2 are disposed along a third direction A3-A3. The first socket portion 4a1 and the second socket portion 4a2 are integrally formed. The first socket portion 4a1 is provided with a first through hole 4a10, and the first extension piece 4a11 and the second extension piece 4a12 are respectively located on the upper and lower sides of the first through hole 4a10. Similarly, the second socket portion 4a2 is provided with a second through hole 4a20, and the third extension piece 4a21 and the fourth extension piece 4a22 are respectively located on the upper and lower sides of the second through hole 4a20.

[0129] Please combine Figure 7 As shown, the tail cap 5a includes a base portion 5a1, a first frame portion 5a2 integrally extending from the base portion 5a1 along a first direction A1-A1, and a second frame portion 5a3 integrally extending from the base portion 5a1 along the first direction A1-A1. The first frame portion 5a2 and the second frame portion 5a3 are spaced apart along a third direction A3-A3. In the embodiment illustrated in this utility model, the first extension piece 4a11 extends beyond the first frame portion 5a2 along the first direction A1-A1.

[0130] Specifically, please combine Figure 11 as well as Figure 13 As shown, the first extension piece 4a11 includes a first anti-retraction portion 4a111 extending beyond the first frame portion 5a2 along the first direction A1-A1. The first anti-retraction portion 4a111 is located at the free end of the first extension piece 4a11 and is raised. This configuration improves the reliability of holding the first extension piece 4a11 between the first frame portion 5a2 and the first cable 2a1, increases damping, reduces the risk of loosening of the tail cap 5a, and prevents relative wear between the housings during vibration. It also improves the sealing performance of the first extension piece 4a11. Similarly, the second extension piece 4a12 includes a second anti-retraction portion 4a121 extending beyond the first frame portion 5a2 along the first direction A1-A1. The second anti-retraction portion 4a121 is located at the free end of the second extension piece 4a12 and is raised. This configuration improves the reliability of holding the second extension piece 4a12 between the first frame portion 5a2 and the first cable 2a1, increases damping, reduces the risk of the tail cap 5a becoming loose, and prevents relative wear between the housings during vibration. It also improves the sealing performance of the second extension piece 4a12. The third extension piece 4a21 includes a third stop portion 4a211 extending beyond the second frame portion 5a3 along the first direction A1-A1. The third stop portion 4a211 is located at the free end of the third extension piece 4a21 and is raised. This configuration also improves the reliability of holding the third extension piece 4a21 between the second frame portion 5a3 and the second cable 3a1, increases damping, reduces the risk of the tail cap 5a becoming loose, and prevents relative wear between the housings during vibration. Furthermore, it improves the sealing performance of the third extension piece 4a21. Similarly, the fourth extension piece 4a22 includes a fourth stop portion 4a221 extending beyond the second frame portion 5a3 along the first direction A1-A1. The fourth stop portion 4a221 is located at the free end of the fourth extension piece 4a22 and is raised. This arrangement improves the reliability of holding the fourth extension piece 4a22 between the second frame portion 5a3 and the second cable 3a1, increases damping, reduces the risk of loosening of the tail cap 5a, and prevents relative wear between the housings during vibration. It also improves the sealing performance of the fourth extension piece 4a22.

[0131] The base section 5a1 is provided with a plurality of positioning slots 5a11 and a plurality of locking protrusions 5a12. The positioning slots 5a11 cooperate with the positioning protrusions 1a23. Each locking protrusion 5a12 is provided with a locking hole 5a121 extending through the locking protrusion 5a12 along the second direction A2-A2. The locking hole 5a121 is locked with the locking protrusion 1a24. The first frame section 5a2 is provided with a first mounting slot 5a20, a first inner wall surface 5a21 exposed in the first mounting slot 5a20, and a second inner wall surface 5a22 exposed in the first mounting slot 5a20 and opposite to the first inner wall surface 5a21. Similarly, the second frame portion 5a3 is provided with a second mounting slot 5a30, a third inner wall surface 5a31 exposed in the second mounting slot 5a30, and a fourth inner wall surface 5a32 exposed in the second mounting slot 5a30 and opposite to the third inner wall surface 5a31.

[0132] Please combine Figure 5 as well as Figure 6 As shown, the second sealing ring 6a includes a first sealing portion 6a1 located on the inner ring, a second sealing portion 6a2 located on the outer ring, and a third sealing portion 6a3 connecting the first sealing portion 6a1 and the second sealing portion 6a2. In the embodiment illustrated in this utility model, the first sealing portion 6a1, the second sealing portion 6a2, and the third sealing portion 6a3 are stepped, wherein the first sealing portion 6a1 is located below the second sealing portion 6a2. In other words, the second sealing ring 6a includes an axial sealing portion and a radial sealing portion to reduce the risk of seal failure. In the embodiment illustrated in this utility model, the axial sealing portion includes the first sealing portion 6a1 and the second sealing portion 6a2, and the radial sealing portion includes the third sealing portion 6a3.

[0133] Please combine Figure 5 as well as Figure 6 As shown, the retaining cover 7a includes a pressure plate portion 7a1, a first sleeve portion 7a2 extending upward from the pressure plate portion 7a1 along a second direction A2-A2, and a second sleeve portion 7a3 extending upward from the pressure plate portion 7a1 along the second direction A2-A2. In the embodiment illustrated in this utility model, the pressure plate portion 7a1, the first sleeve portion 7a2, and the second sleeve portion 7a3 are integrally formed. The first sleeve portion 7a2 is generally cylindrical and has a first surrounding wall 7a21 and a first receiving cavity 7a22 surrounded by the first surrounding wall 7a21. The first surrounding wall 7a21 is received in a first mounting opening 1a171. The first surrounding wall 7a21 has at least one first locking groove 7a211 penetrating through the first surrounding wall 7a21. The first surrounding wall 7a21 has a first inclined surface 7a212 exposed in the first receiving cavity 7a22, and both the first inclined surface 7a212 and the second conical surface 1a311 are configured to guide the insertion of the mating connector 200.

[0134] Similarly, the second sleeve portion 7a3 is generally cylindrical, and it has a second surrounding wall 7a31 and a second receiving cavity 7a32 enclosed by the second surrounding wall 7a31. The second surrounding wall 7a31 is received within a second mounting opening 1a172. The second surrounding wall 7a31 has at least one second locking groove 7a311 extending through the second surrounding wall 7a31. The second surrounding wall 7a31 has a second inclined surface 7a312 exposed in the second receiving cavity 7a32, and both the second inclined surface 7a312 and the second tapered surface 1a311 are configured to guide the insertion of the mating connector 200. The first locking groove 7a211 engages with the first holding protrusion 1a174, and the second locking groove 7a311 engages with the second holding protrusion 1a176 to retain the holding cover 7a within the first housing 1a. Optionally, after the latching cover 7a is engaged, the first inclined surface 1a1741 of the first latching protrusion 1a174 and the second inclined surface 1a1761 of the second latching protrusion 1a176 protrude into the first mounting hole 1a171 and the second mounting hole 1a172, respectively. At this time, the first latching protrusion 1a174 and the second latching protrusion 1a176 can also guide the insertion of the mating connector 200.

[0135] When assembling the electrical connector 100, the first cable assembly 2a and the second cable assembly 3a are first assembled. Then, the first core 2a11 and the second core 3a11 are passed through the first mounting slot 5a20 and the second mounting slot 5a30 of the tail cover 5a, respectively. Next, the first core 2a11 and the second core 3a11 are passed through the first through hole 4a10 and the second through hole 4a20 of the first sealing ring 4a, respectively. Then, the first cable assembly 2a and the second cable assembly 3a are inserted into the first terminal receiving slot 1a15 and the second terminal receiving slot 1a16 through the mounting channel 1a21, respectively. The first socket portion 4a1 and the second socket portion 4a2 of the first sealing ring 4a are respectively engaged and sealed inside the base portion 5a1 to seal the first cable 2a1 and the second cable 3a1. The first extension piece 4a11 and the second extension piece 4a12 respectively fill the gap between the first frame portion 5a2 and the first cable 2a1, and the third extension piece 4a21 and the fourth extension piece 4a22 respectively fill the gap between the second frame portion 5a3 and the second cable 3a1. This further improves the sealing effect and reduces the possibility of loosening of the tail cap 5a. Then, the tail cap 5a and the first mounting portion 1a2 of the first housing 1a are locked together. Specifically, the tail cap 5a and the first mounting portion 1a2 are provided with a locking protrusion 1a24 and a locking hole 5a121 that interlock with each other. In the embodiment shown in the figure, the locking protrusion 1a24 is provided in the first mounting portion 1a2, and the locking hole 5a121 is provided in the tail cap 5a. Of course, those skilled in the art will understand that the locking protrusion 1a24 and the locking hole 5a121 can also be interchanged, that is, the locking protrusion 1a24 is located on the tail cover 5a, and the locking hole 5a121 is located on the first mounting part 1a2.

[0136] Then, the second sealing ring 6a is installed on the first housing 1a, wherein the first sealing part 6a1 abuts against the first bottom surface 1a178, the second sealing part 6a2 is received in the first annular groove 1a4 and abuts against the first inner wall part 1a12, and the third sealing part 6a3 abuts against the first conical surface 1a177.

[0137] Finally, the retaining cover 7a is installed and fixed on the first housing 1a, wherein the pressure plate portion 7a1 abuts against the first sealing portion 6a1 to achieve axial sealing.

[0138] Please combine Figures 24 to 56As shown, the mating connector 200 includes a second housing 1b, a first terminal module 2b at least partially disposed in the second housing 1b, a second terminal module 3b at least partially disposed in the second housing 1b, a first connecting conductive terminal module 4b connected to the first terminal module 2b, a second connecting conductive terminal module 5b connected to the second terminal module 3b, a locking device 6b mounted on the second housing 1b, a mounting assembly 7b mounted in the second housing 1b, and a third sealing ring 8b mounted on the second housing 1b.

[0139] Please combine Figure 40 as well as Figure 41 As shown, in one embodiment of the present invention, the second housing 1b is made of insulating material and includes a second main body 1b1, a second mounting portion 1b2, and a connecting portion 1b3 connecting the second main body 1b1 and the second mounting portion 1b2. In the embodiment illustrated in the present invention, the second main body 1b1 extends generally in a horizontal direction, and the second mounting portion 1b2 extends generally in a vertical direction. The connecting portion 1b3 includes a connecting plate 1b31 connecting the second main body 1b1 and the second mounting portion 1b2 along a first direction A1-A1, a plurality of first reinforcing ribs 1b32 connecting the second main body 1b1 and the second mounting portion 1b2 and spaced apart along a third direction A3-A3, and a plurality of second reinforcing ribs 1b33 connecting the second main body 1b1 and the second mounting portion 1b2 and spaced apart along a third direction A3-A3. The first reinforcing ribs 1b32 and the second reinforcing ribs 1b33 are respectively located on both sides of the connecting plate 1b31 along a second direction A2-A2. Both the first reinforcing rib 1b32 and the second reinforcing rib 1b33 extend obliquely along the first direction A1-A1, but in different directions. By setting the first reinforcing rib 1b32 and the second reinforcing rib 1b33, it is beneficial to increase the structural strength of the second shell 1b.

[0140] In the embodiment illustrated in this utility model, the second main body 1b1 includes a second substrate 1b11, a first protrusion 1b12 extending upward from the second substrate 1b11 along the second direction A2-A2, a first mating protrusion 1b13 extending upward from the second substrate 1b11 along the second direction A2-A2, a second mating protrusion 1b14 extending upward from the second substrate 1b11 along the second direction A2-A2, a second protrusion 1b15 extending downward from the second substrate 1b11 along the second direction A2-A2, a first mounting protrusion 1b16 extending downward from the second substrate 1b11 along the second direction A2-A2, and a second mounting protrusion 1b17 extending downward from the second substrate 1b11 along the second direction A2-A2.

[0141] In the embodiment illustrated in this utility model, the first protrusion 1b12 is provided with a first receiving space 1b121 and a first mating conical surface 1b122 located on the inner side of the first protrusion 1b12 and exposed in the first receiving space 1b121. In the embodiment illustrated in this utility model, the first mating conical surface 1b122 is configured to fit with the first conical surface 1a177 to facilitate docking.

[0142] In the embodiment illustrated in this utility model, the first mating protrusion 1b13 and the second mating protrusion 1b14 are spaced apart along a third direction A3-A3. A first protrusion 1b12 surrounds the periphery of the first mating protrusion 1b13 and the second mating protrusion 1b14. In other words, both the first mating protrusion 1b13 and the second mating protrusion 1b14 are located within the first receiving space 1b121. In the embodiment illustrated in this utility model, the first protrusion 1b12, the first mating protrusion 1b13, and the second mating protrusion 1b14 are integrally formed. Furthermore, in the embodiment illustrated in this utility model, the second main body 1b1 also includes at least one first connecting block 1b18 connecting the first protrusion 1b12 and the second substrate 1b11. The first connecting block 1b18 has an inclined first guide surface 1b181. In the embodiment illustrated in this utility model, there are multiple first connecting blocks 1b18, spaced apart circumferentially along the first protrusion 1b12. The first guide surface 1b181 together forms a guide cone surface 1b180 to match the second cone surface 1a311 of the first cone portion 1a31 of the electrical connector 100, thereby playing a role in automatic alignment. This facilitates blind mating between the electrical connector 100 and the mating connector 200 and improves the uniformity of stress distribution. At the same time, the first connecting block 1b18 also increases the structural strength of the second housing 1b.

[0143] The first mating protrusion 1b13 has a first mating conical portion 1b131 at its top, a first mating cylindrical portion 1b132 at its bottom, and a first assembly hole 1b133 passing through the first mating conical portion 1b131 and the first mating cylindrical portion 1b132 along the second direction A2-A2. The first mating conical portion 1b131 has a first mating conical surface 1b1311 on its outer side. The first mating conical surface 1b1311 is configured to mate with the first sleeve portion 7a2 of the electrical connector 100, which facilitates the automatic alignment and insertion of the first mating protrusion 1b13 into the first sleeve portion 7a2. In the embodiment illustrated in this utility model, the first assembly hole 1b133 is a stepped hole, which includes a first cylindrical hole 1b1331 at the lower part and a second cylindrical hole 1b1332 communicating with the first cylindrical hole 1b1331 and located at the upper part. In the embodiment illustrated in this utility model, the diameter of the first cylindrical hole 1b1331 is larger than the diameter of the second cylindrical hole 1b1332. The first cylindrical hole 1b1331 penetrates the first mating cylindrical portion 1b132 along the second direction A2-A2. The second cylindrical hole 1b1332 penetrates the first mating conical portion 1b131 upward along the second direction A2-A2. The first mating protrusion 1b13 is provided with a first stepped surface 1b1333 located at the junction of the first cylindrical hole 1b1331 and the second cylindrical hole 1b1332.

[0144] Similarly, the second mating protrusion 1b14 is provided with a second mating conical portion 1b141 at its top, a second mating cylindrical portion 1b142 at its bottom, and a second assembly hole 1b143 extending through the second mating conical portion 1b141 and the second mating cylindrical portion 1b142 along the second direction A2-A2. The second mating conical portion 1b141 is provided with a second mating conical surface 1b1411 on its outer side. The second mating conical surface 1b1411 is configured to mate with the second sleeve portion 7a3 of the electrical connector 100, which facilitates the automatic alignment and insertion of the second mating protrusion 1b14 into the second sleeve portion 7a3. In the embodiment illustrated in this utility model, the second assembly hole 1b143 is a stepped hole, which includes a third cylindrical hole 1b1431 at the lower part and a fourth cylindrical hole 1b1432 communicating with the third cylindrical hole 1b1431 and located at the upper part. In the embodiment illustrated in this utility model, the diameter of the third cylindrical hole 1b1431 is larger than the diameter of the fourth cylindrical hole 1b1432. The third cylindrical hole 1b1431 penetrates the second mating cylindrical portion 1b142 along the second direction A2-A2. The fourth cylindrical hole 1b1432 penetrates upward through the second mating conical portion 1b141 along the second direction A2-A2. The second mating protrusion 1b14 is provided with a second stepped surface 1b1433 located at the junction of the third cylindrical hole 1b1431 and the fourth cylindrical hole 1b1432.

[0145] In the embodiment illustrated in this utility model, the second main body 1b1 is further provided with a plurality of second connecting blocks 1b19 connecting the second protrusion 1b15 and the second substrate 1b11. In the embodiment illustrated in this utility model, the second connecting blocks 1b19 are arranged at intervals along the circumference of the second protrusion 1b15. The second connecting blocks 1b19 can increase the structural strength of the second housing 1b. In addition, each second connecting block 1b19 is provided with an inclined second guide surface 1b191. The second guide surface 1b191 is beneficial for reflecting foreign objects that may collide with the bottom of the second main body 1b1, thereby reducing the risk of damage to the second main body 1b1 and improving reliability.

[0146] In the embodiment illustrated in this utility model, the second main body 1b1 further comprises a plurality of first connecting ribs 1b151 connecting the second protrusion 1b15 and the first mounting protrusion 1b16, and a plurality of second connecting ribs 1b152 connecting the second protrusion 1b15 and the second mounting protrusion 1b17. In the embodiment illustrated in this utility model, the plurality of first connecting ribs 1b151 are radially arranged and connected to the second substrate 1b11. The plurality of second connecting ribs 1b152 are radially arranged and connected to the second substrate 1b11.

[0147] Furthermore, in the embodiment illustrated in this utility model, the second protrusion 1b15 is further provided with a first sidewall 1b153, a second sidewall 1b154, a receiving groove 1b155 located between the first sidewall 1b153 and the second sidewall 1b154 along a third direction A3-A3, and a receiving space 1b156 located in front of the receiving groove 1b155 along a first direction A1-A1. Both the first sidewall 1b153 and the second sidewall 1b154 extend along the first direction A1-A1. The first sidewall 1b153 and the second sidewall 1b154 are spaced apart along the third direction A3-A3. The first sidewall 1b153 is provided with a first mounting guide groove 1b1531 communicating with the receiving groove 1b155 and a first stop surface 1b1532 located at the rear end of the first mounting guide groove 1b1531. Similarly, the second sidewall 1b154 is provided with a second mounting guide groove 1b1541 communicating with the receiving groove 1b155 and a second stop surface 1b1542 located at the rear end of the second mounting guide groove 1b1541. Both the first stop surface 1b1532 and the second stop surface 1b1542 protrude forward into the receiving space 1b156. The first mounting protrusion 1b16 and the second mounting protrusion 1b17 are located on both sides of the receiving space 1b156 along the third direction A3-A3.

[0148] In the embodiment illustrated in this utility model, the first mounting protrusion 1b16 is cylindrical and includes a first mounting space 1b161, a first edge portion 1b162 located at the bottom edge of the first mounting protrusion 1b16, and a plurality of first locking protrusions 1b163 extending inward into the first mounting space 1b161. The first edge portion 1b162 includes a first inclined guide surface 1b1621 located on the outer side of the first edge portion 1b162 and a second inclined guide surface 1b1622 located on the inner side of the first edge portion 1b162.

[0149] In the embodiment illustrated in this utility model, the first mounting protrusion 1b17 is cylindrical and includes a second mounting space 1b171, a second edge portion 1b172 located at the bottom edge of the first mounting protrusion 1b17, and a plurality of second locking protrusions 1b173 extending inward into the second mounting space 1b171. The second edge portion 1b172 includes a third inclined guide surface 1b1721 located on the outer side of the second edge portion 1b172 and a fourth inclined guide surface 1b1722 located on the inner side of the second edge portion 1b172.

[0150] The second mounting portion 1b2 includes a mounting wall 1b21, a first mounting frame portion 1b22 extending forward along a first direction A1-A1 and protruding from the mounting wall 1b21, a second mounting frame portion 1b23 extending forward along a first direction A1-A1 and protruding from the mounting wall 1b21, a first mounting protrusion 1b24 extending forward along a first direction A1-A1 and protruding from the mounting wall 1b21, and a second mounting protrusion 1b25 extending rearward along a first direction A1-A1 and protruding from the mounting wall 1b21. In one embodiment of the present invention, the first mounting frame portion 1b22, the second mounting frame portion 1b23, the first mounting protrusion 1b24, and the second mounting protrusion 1b25 are all integrally formed with the mounting wall 1b21. A third sealing ring 8b is mounted on the mounting wall 1b21 and surrounds the outer periphery of the first mounting frame portion 1b22, the second mounting frame portion 1b23, and the first mounting protrusion 1b24.

[0151] Please combine Figure 31 As shown in the illustrated embodiment of this utility model, the mating connector 200 further includes a plurality of screw fixing sleeves 9b fixed to the mounting wall 1b21. In the illustrated embodiment of this utility model, there are four screw fixing sleeves 9b, which are embedded and fixed at the four corners of the mounting wall 1b21. Preferably, the screw fixing sleeves 9b are made of metal to improve structural strength.

[0152] The first mounting frame 1b22 is provided with a first mounting cavity 1b221 and a first annular inner wall surface 1b222 exposed in the first mounting cavity 1b221.

[0153] The second mounting frame 1b23 is provided with a second mounting cavity 1b231 and a second annular inner wall surface 1b232 exposed in the second mounting cavity 1b231.

[0154] The first mounting protrusion 1b24 has a first annular wall portion 1b241 and a first assembly space 1b242 enclosed by the first annular wall portion 1b241. In the embodiment illustrated in this utility model, the first annular wall portion 1b241, the first mounting frame portion 1b22, and the second mounting frame portion 1b23 are all integrally connected. The first annular wall portion 1b241 also has at least one locking hole 1b243 communicating with the first assembly space 1b242. Please refer to... Figure 61 As shown, the inner wall of the first annular wall portion 1b241 is provided with a guide cone surface 1b2411 and a limiting wall surface 1b2412 exposed in the first assembly space 1b242.

[0155] Please combine Figure 28 As shown in the illustrated embodiment of this utility model, the second mounting protrusion 1b25 includes a second annular wall portion 1b251, and the first assembly space 1b242 extends further along the first direction A1-A1 and penetrates through the second mounting protrusion 1b25. In the illustrated embodiment of this utility model, the second mounting protrusion 1b25 also includes a protrusion 1b252 that protrudes from the second annular wall portion 1b251 along the second direction A2-A2.

[0156] Please combine Figures 42 to 45 As shown, the first terminal module 2b includes a first mating terminal 2b1, a first elastic washer 2b2, a first flat washer 2b3, a first adapter sleeve 2b4 installed in the first mating protrusion 1b13, a first retaining sleeve 2b5 installed and fixed in the first mounting space 1b161 of the first mounting protrusion 1b16, a first mating sealing ring 2b6 cooperating with the first retaining sleeve 2b5, a second mating sealing ring 2b7 cooperating with the first mounting protrusion 1b16, and a first rotating cover 2b8 cooperating with the first mating terminal 2b1. The first retaining sleeve 2b5 abuts against the first locking protrusion 1b163 to prevent the first retaining sleeve 2b5 from disengaging from the first mounting space 1b161.

[0157] In the embodiment illustrated in this utility model, the first mating terminal 2b1 includes a first abutting portion 2b11, a first mounting portion 2b12 connected to the first abutting portion 2b11 upward along the second direction A2-A2, a first mating portion 2b13 protruding upward along the second direction A2-A2 and connected to the first mounting portion 2b12, and a first force-receiving portion 2b14 protruding downward along the second direction A2-A2 from the first abutting portion 2b11. In the embodiment illustrated in this utility model, the first mating portion 2b13 is provided with a first mating thread 2b131. The first mating thread 2b131 mates with the first terminal mating hole 2a23. In one embodiment of this utility model, the first mating thread 2b131 is threadedly engaged with the first terminal mating hole 2a23. When a first toothed sleeve 2a3 is provided in the first terminal mating hole 2a23, the first mating thread 2b131 and the first toothed sleeve 2a3 are threadedly engaged to improve contact reliability. In the embodiment illustrated in this utility model, the first force-bearing part 2b14 is a hexagonal nut, and the bottom of the first force-bearing part 2b14 is provided with a first mating hole 2b15 extending through the first force-bearing part 2b14 along the second direction A2-A2. In the embodiment illustrated in this utility model, the first mating hole 2b15 is a star-shaped hole to have a specific shape. In one embodiment of this utility model, the first mating terminal 2b1 is made of stainless steel.

[0158] A first elastic washer 2b2 is fitted onto the first assembly portion 2b12. In the embodiment illustrated in the figure, the first elastic washer 2b2 has a first slot 2b21 to facilitate adjustment of the thickness of the first elastic washer 2b2 in the second direction A2-A2. In one embodiment of the present invention, the first elastic washer 2b2 is made of metal. When the first elastic washer 2b2 is not pressed by the first abutting portion 2b11, the first elastic washer 2b2 is warped to apply a certain force to the first mating terminal 2b1. When the first elastic washer 2b2 is pressed into place by the first abutting portion 2b11, the first elastic washer 2b2 is approximately flat.

[0159] A first flat washer 2b3 is fitted onto the first assembly part 2b12. The first flat washer 2b3 is located above and abuts against the first elastic washer 2b2 along the second direction A2-A2. In one embodiment of this invention, the first flat washer 2b3 is made of metal. The first flat washer 2b3 is always flat.

[0160] Please combine Figure 42 as well as Figure 43As shown, the first rotating cover 2b8 is made of an insulating material (e.g., nylon) and includes a first cover body 2b81, a first annular outer wall portion 2b82 protruding upward from the first cover body 2b81, a first annular inner wall portion 2b83 protruding upward from the first cover body 2b81, a first force-applying protrusion 2b84 protruding upward from the first cover body 2b81, a first annular receiving groove 2b85 located between the first annular inner wall portion 2b83 and the first annular outer wall portion 2b82, and a first annular recessed groove 2b86 located between the first annular inner wall portion 2b83 and the first force-applying protrusion 2b84.

[0161] In the embodiment illustrated in this utility model, the first annular outer wall portion 2b82, the first annular inner wall portion 2b83, and the first force-applying protrusion 2b84 are all integrally formed with the first cover body 2b81. The first cover body 2b81 is provided with a first plum blossom groove 2b810. The first annular outer wall portion 2b82 is provided with a first slot 2b821.

[0162] In the embodiment illustrated in this utility model, the first annular inner wall portion 2b83 protrudes upward from the first annular outer wall portion 2b82 along the second direction A2-A2, and the first annular inner wall portion 2b83 also protrudes upward from the first annular outer wall portion 2b82 along the second direction A2-A2. The first annular inner wall portion 2b83 is provided with a first retaining groove 2b831. The first force-applying protrusion 2b84 is fixed in the first mating hole 2b15. In the embodiment illustrated in this utility model, the first force-applying protrusion 2b84 has a plum blossom-shaped outer surface to match the shape of the first mating hole 2b15.

[0163] The first rotating cover 2b8 is fastened to the first retaining sleeve 2b5 and / or the first mounting protrusion 1b16 to prevent the first rotating cover 2b8 from falling off. In the embodiment illustrated in this utility model, the first retaining sleeve 2b5 has a first top wall 2b51 and a first annular wall 2b52 integrally extending downward from the periphery of the first top wall 2b51 along the second direction A2-A2. The first top wall 2b51 has a first opening 2b511, and the first elastic washer 2b2 is at least partially located in the first opening 2b511. The first annular wall 2b52 has a first internal space 2b521 and at least one first retaining protrusion 2b522 protruding inward into the first internal space 2b521. The first retaining protrusion 2b522 is locked with the first retaining slot 2b831 to prevent the first rotating cover 2b8 from disengaging from the first retaining sleeve 2b5 along the second direction A2-A2 downward.

[0164] Furthermore, in the embodiment illustrated in this utility model, the first cover body 2b81 of the first rotating cover 2b8 also includes a first stepped surface 2b87 exposed in the first annular receiving groove 2b85 (e.g., Figure 50(As shown). In the embodiment illustrated in this utility model, the first stepped surface 2b87 includes a first bottom surface 2b871, a second bottom surface 2b872 that is lower than the first bottom surface 2b871, and a first connecting surface 2b873 that connects the first bottom surface 2b871 and the second bottom surface 2b872.

[0165] Please combine Figure 50 As shown, the first mating sealing ring 2b6 is sleeved on the first annular inner wall portion 2b83 and located at the bottom of the first annular inner wall portion 2b83, with the bottom surface of the first mating sealing ring 2b6 abutting against the first bottom end face 2b871. The cross-sectional shape of the first mating sealing ring 2b6 can be star-shaped or other shapes. In the description of this utility model, the star-shaped cross-sectional shape of the first mating sealing ring 2b6 means that the cross-section of the first mating sealing ring 2b6 includes a first base portion 2b61 and a plurality of first abutting protrusions 2b62 that extend integrally with and protrude from the first base portion 2b61, and the plurality of first abutting protrusions 2b62 are distributed circumferentially along the first base portion 2b61. In one embodiment of this utility model, the first base portion 2b61 is generally rectangular, and the plurality of first abutting protrusions 2b62 are evenly distributed circumferentially along the first base portion 2b61. The first abutting protrusion 2b62 is configured to abut against the corresponding wall surface to achieve a seal. In the embodiment illustrated in this utility model, the number of the plurality of first abutting protrusions 2b62 is four. Of course, those skilled in the art will understand that the number of the plurality of first abutting protrusions 2b62 can be flexibly adjusted as needed. In one embodiment of this utility model, the first mating sealing ring 2b6 is made of silicone rubber.

[0166] The second mating sealing ring 2b7 is sleeved on the first connecting surface 2b873 and located at the bottom of the first annular receiving groove 2b85. The bottom surface of the second mating sealing ring 2b7 abuts against the second bottom end surface 2b872. The cross-sectional shape of the second mating sealing ring 2b7 can be star-shaped, rectangular, or other shapes. In the description of this utility model, the star-shaped cross-sectional shape of the second mating sealing ring 2b7 means that the cross-section of the second mating sealing ring 2b7 includes a second base portion 2b71 and a plurality of second abutting protrusions 2b72 that extend integrally with and protrude from the second base portion 2b71. The plurality of second abutting protrusions 2b72 are distributed circumferentially along the second base portion 2b71. In one embodiment of this utility model, the second base portion 2b71 is generally rectangular, and the plurality of second abutting protrusions 2b72 are evenly distributed circumferentially along the second base portion 2b71. The second abutting protrusions 2b72 are configured to abut against the corresponding wall surface to achieve a seal. In the illustrated embodiment of this utility model, the number of the plurality of second abutting protrusions 2b72 is four. Of course, those skilled in the art will understand that the number of the plurality of second abutting protrusions 2b72 can be flexibly adjusted as needed. In one embodiment of this utility model, the second mating sealing ring 2b7 is made of silicone rubber. In one embodiment of this utility model, the second mating sealing ring 2b7 is a regular annular shape. In another embodiment of this utility model, the second mating sealing ring 2b7 is an irregular annular shape, wherein the second mating sealing ring 2b7 has a plurality of laterally outwardly protruding protrusions (not shown), and the plurality of protrusions are evenly distributed circumferentially on the second mating sealing ring 2b7.

[0167] Please combine Figure 44 as well as Figure 45 As shown, the first adapter sleeve 2b4 is received in the first assembly hole 1b133. In one embodiment of the present invention, the first adapter sleeve 2b4 is made of a metal material (e.g., copper). The first adapter sleeve 2b4 includes a first cylindrical portion 2b41, a second cylindrical portion 2b42, a first abutting surface 2b43 connecting the first cylindrical portion 2b41 and the second cylindrical portion 2b42, and a first mounting through hole 2b44 penetrating the first cylindrical portion 2b41 and the second cylindrical portion 2b42 along a second direction A2-A2. In the embodiment illustrated in the present invention, the diameter of the first cylindrical portion 2b41 is larger than the diameter of the second cylindrical portion 2b42. The first cylindrical portion 2b41 is received in the first cylindrical hole 1b1331, the second cylindrical portion 2b42 is received in the second cylindrical hole 1b1332, and the first abutting surface 2b43 abuts against the first stepped surface 1b1333. In the embodiment illustrated in this utility model, the second cylindrical portion 2b42 is provided with a third exposed surface 2b421 that is exposed above the first mating protrusion 1b13.

[0168] The third exposed surface 2b421 is in contact with the first exposed surface 2a221 to improve the protective performance.

[0169] The second terminal module 3b includes a second mating terminal 3b1, a second elastic washer 3b2, a second flat washer 3b3, a second adapter sleeve 3b4 installed in the second mating protrusion 1b14, a second retaining sleeve 3b5 installed and fixed in the second mounting space 1b171 of the second mounting protrusion 1b17, a third mating sealing ring 3b6 cooperating with the second retaining sleeve 3b5, a fourth mating sealing ring 3b7 cooperating with the second mounting protrusion 1b17, and a second rotating cover 3b8 cooperating with the second mating terminal 3b1. The second retaining sleeve 3b5 abuts against the second locking protrusion 1b173 to prevent the second retaining sleeve 3b5 from disengaging from the second mounting space 1b171. In one embodiment of this utility model, the third mating sealing ring 3b6 and the fourth mating sealing ring 3b7 are both made of silicone rubber.

[0170] In the embodiment illustrated in this utility model, the second mating terminal 3b1 includes a second abutting portion 3b11, a second mounting portion 3b12 connected to the second abutting portion 3b11 upward along the second direction A2-A2, a second mating portion 3b13 protruding upward along the second direction A2-A2 and connected to the second mounting portion 3b12, and a second force-receiving portion 3b14 protruding downward along the second direction A2-A2 from the second abutting portion 3b11. In the embodiment illustrated in this utility model, the second mating portion 3b13 is provided with a second mating thread 3b131. The second mating thread 3b131 mates with the second terminal mating hole 3a23. In one embodiment of this utility model, the second mating thread 3b131 is threadedly engaged with the second terminal mating hole 3a23. When a second toothed sleeve 3a3 is provided in the second terminal mating hole 3a23, the second mating thread 3b131 and the second toothed sleeve 3a3 are threadedly engaged to improve contact reliability. In the embodiment illustrated in this utility model, the second force-bearing part 3b14 is a hexagonal nut, and the bottom of the second force-bearing part 3b14 is provided with a second mating hole 3b15 penetrating the second force-bearing part 3b14 along the second direction A2-A2. In the embodiment illustrated in this utility model, the second mating hole 3b15 is a star-shaped hole to have a specific shape. In one embodiment of this utility model, the second mating terminal 3b1 is made of stainless steel.

[0171] The second elastic washer 3b2 is fitted onto the second assembly part 3b12. In the embodiment illustrated in the figure, the second elastic washer 3b2 has a second slot 3b21 to facilitate adjustment of the thickness of the second elastic washer 3b2 in the second direction A2-A2. In one embodiment of the present invention, the second elastic washer 3b2 is made of metal. When the second elastic washer 3b2 is not pressed by the second abutting part 3b11, the second elastic washer 3b2 is warped to apply a certain force to the second mating terminal 3b1. When the second elastic washer 3b2 is pressed into place by the second abutting part 3b11, the second elastic washer 3b2 is approximately flat.

[0172] The second flat washer 3b3 is fitted onto the second assembly part 3b12. The second flat washer 3b3 is located above and abuts against the second elastic washer 3b2 along the second direction A2-A2. In one embodiment of this invention, the second flat washer 3b3 is made of metal. The second flat washer 3b3 is always flat.

[0173] The second rotating cover 3b8 is made of an insulating material (e.g., nylon) and includes a second cover body 3b81, a second annular outer wall portion 3b82 protruding upward from the second cover body 3b81, a second annular inner wall portion 3b83 protruding upward from the second cover body 3b81, a second force-applying protrusion 3b84 protruding upward from the second cover body 3b81, a second annular receiving groove 3b85 located between the second annular inner wall portion 3b83 and the second annular outer wall portion 3b82, and a second annular recessed groove 3b86 located between the second annular inner wall portion 3b83 and the second force-applying protrusion 3b84.

[0174] In the embodiment illustrated in this utility model, the second annular outer wall portion 3b82, the second annular inner wall portion 3b83, and the second force-applying protrusion 3b84 are all integrally formed with the second cover body 3b81. The second cover body 3b81 is provided with a second plum blossom groove 3b810. The second annular outer wall portion 3b82 is provided with a second slot 3b821.

[0175] In the embodiment illustrated in this utility model, the second annular inner wall portion 3b83 protrudes upward from the second annular outer wall portion 3b82 along the second direction A2-A2, and the second annular inner wall portion 3b83 also protrudes upward from the second direction A2-A2 with a second force-applying protrusion 3b84. The second annular inner wall portion 3b83 is provided with a second retaining groove 3b831. The second force-applying protrusion 3b84 is fixed in the second mating hole 3b15. In the embodiment illustrated in this utility model, the second force-applying protrusion 3b84 has a plum blossom-shaped outer surface to match the shape of the second mating hole 3b15.

[0176] The second rotating cover 3b8 is fastened to the second retaining sleeve 3b5 and / or the second mounting protrusion 1b17 to prevent the second rotating cover 3b8 from falling off. In the embodiment illustrated in this utility model, the second retaining sleeve 3b5 has a second top wall 3b51 and a second annular wall 3b52 integrally extending downward from the periphery of the second top wall 3b51 along the second direction A2-A2. The second top wall 3b51 has a second opening 3b511, and the second elastic washer 3b2 is at least partially located in the second opening 3b511. The second annular wall 3b52 has a second internal space 3b521 and at least one second retaining protrusion 3b522 protruding inward into the second internal space 3b521. The second retaining protrusion 3b522 is locked with the second retaining slot 3b831 to prevent the second rotating cover 3b8 from disengaging from the second retaining sleeve 3b5 downward along the second direction A2-A2.

[0177] Furthermore, in the embodiment illustrated in this utility model, the second cover body 3b81 of the second rotating cover 3b8 also includes a second stepped surface 3b87 exposed in the second annular receiving groove 3b85. In the embodiment illustrated in this utility model, the second stepped surface 3b87 includes a third bottom end surface 3b871, a fourth bottom end surface 3b872 lower than the third bottom end surface 3b871, and a second connecting surface 3b873 connecting the third bottom end surface 3b871 and the fourth bottom end surface 3b872.

[0178] The third mating sealing ring 3b6 is sleeved on the second annular inner wall portion 3b83 and located at the bottom of the second annular inner wall portion 3b83. The bottom surface of the third mating sealing ring 3b6 abuts against the third bottom end face 3b871. The cross-sectional shape of the third mating sealing ring 3b6 can be star-shaped or other shapes. In the description of this utility model, the star-shaped cross-sectional shape of the third mating sealing ring 3b6 means that the cross-section of the third mating sealing ring 3b6 includes a third base portion 3b61 and a plurality of third abutting protrusions 3b62 that extend integrally with and protrude from the third base portion 3b61. The plurality of third abutting protrusions 3b62 are distributed circumferentially along the third base portion 3b61. In one embodiment of this utility model, the third base portion 3b61 is generally rectangular, and the plurality of third abutting protrusions 3b62 are evenly distributed circumferentially along the third base portion 3b61. The third abutting protrusions 3b62 are configured to abut against the corresponding wall surface to achieve a seal. In the embodiment illustrated in this utility model, the number of the plurality of third abutment protrusions 3b62 is four. Of course, those skilled in the art will understand that the number of the plurality of third abutment protrusions 3b62 can be flexibly adjusted as needed.

[0179] The fourth mating sealing ring 3b7 is fitted onto the second connecting surface 3b873 and located at the bottom of the second annular receiving groove 3b85. The bottom surface of the fourth mating sealing ring 3b7 abuts against the fourth bottom end surface 3b872. The cross-sectional shape of the fourth mating sealing ring 3b7 can be star-shaped, rectangular, or other shapes. In the description of this utility model, the star-shaped cross-sectional shape of the fourth mating sealing ring 3b7 means that the cross-section of the fourth mating sealing ring 3b7 includes a fourth base portion 3b71 and a plurality of fourth abutting protrusions 3b72 that extend integrally with and protrude from the fourth base portion 3b71. The plurality of fourth abutting protrusions 3b72 are distributed circumferentially along the fourth base portion 3b71. In one embodiment of this utility model, the fourth base portion 3b71 is generally rectangular, and the plurality of fourth abutting protrusions 3b72 are evenly distributed circumferentially along the fourth base portion 3b71. The fourth abutment protrusion 3b72 is configured to abut against the corresponding wall surface to achieve a seal. In the embodiment illustrated in this utility model, the number of the plurality of fourth abutment protrusions 3b72 is four. Of course, those skilled in the art will understand that the number of the plurality of fourth abutment protrusions 3b72 can be flexibly adjusted as needed. In one embodiment of this utility model, the fourth mating sealing ring 3b7 is a regular annular shape. In another embodiment of this utility model, the fourth mating sealing ring 3b7 is an irregular annular shape, wherein the fourth mating sealing ring 3b7 has a plurality of protrusions (not shown) that protrude laterally outward, and the plurality of protrusions are evenly distributed circumferentially on the fourth mating sealing ring 3b7.

[0180] The second adapter sleeve 3b4 is received in the second assembly hole 1b143. In one embodiment of the present invention, the second adapter sleeve 3b4 is made of a metal material (e.g., copper). The second adapter sleeve 3b4 includes a third cylindrical portion 3b41, a fourth cylindrical portion 3b42, a second abutting surface 3b43 connecting the third cylindrical portion 3b41 and the fourth cylindrical portion 3b42, and a second mounting through hole 3b44 penetrating the third cylindrical portion 3b41 and the fourth cylindrical portion 3b42 along a second direction A2-A2. In the embodiment illustrated in the present invention, the diameter of the third cylindrical portion 3b41 is larger than the diameter of the fourth cylindrical portion 3b42. The third cylindrical portion 3b41 is received in the third cylindrical hole 1b1431, the fourth cylindrical portion 3b42 is received in the fourth cylindrical hole 1b1432, and the second abutting surface 3b43 abuts against the second stepped surface 1b1433. In the embodiment illustrated in this utility model, the fourth cylindrical portion 3b42 is provided with a fourth exposed surface 3b421 that protrudes from the second mating protrusion 1b14. The fourth exposed surface 3b421 contacts the second exposed surface 3a221 to improve the protective performance.

[0181] Please combine Figures 41 to 45As shown, the first conductive terminal module 4b includes a first conductive terminal 4b1, a first insulating sleeve 4b2 sleeved on the first conductive terminal 4b1, a first sealing sleeve 4b3 sleeved on the first insulating sleeve 4b2, and a first rivet nut 4b4 fixed to the first conductive terminal 4b1. The first sealing sleeve 4b3 is received in the first mounting cavity 1b221 of the first mounting frame portion 1b22, and the first sealing sleeve 4b3 abuts against the first annular inner wall surface 1b222 to achieve a seal. The first rivet nut 4b4 is configured to be electrically connected (e.g., soldered) to a circuit board (not shown).

[0182] The first conductive terminal 4b1 includes a first end portion 4b11, a first tail portion 4b12 opposite to the first end portion 4b11, and a first intermediate portion 4b13 connecting the first end portion 4b11 and the first tail portion 4b12. The first end portion 4b11 has a first through hole 4b110 extending through the first end portion 4b11 along a second direction A2-A2. A first insulating sleeve 4b2 is fitted onto the first intermediate portion 4b13. In one embodiment of the present invention, the first conductive terminal 4b1 is flat and made of copper.

[0183] Similarly, the second conductive terminal module 5b includes a second conductive terminal 5b1, a second insulating sleeve 5b2 sleeved on the second conductive terminal 5b1, a second sealing sleeve 5b3 sleeved on the second insulating sleeve 5b2, and a second rivet nut 5b4 fixed to the second conductive terminal 5b1. The second sealing sleeve 5b3 is received in the second mounting cavity 1b231 of the second mounting frame portion 1b23, and the second sealing sleeve 5b3 abuts against the second annular inner wall surface 1b232 to achieve a seal. The second rivet nut 5b4 is configured to be electrically connected (e.g., soldered) to the circuit board.

[0184] The second conductive terminal 5b1 includes a second end portion 5b11, a second tail portion 5b12 opposite to the second end portion 5b11, and a second intermediate portion 5b13 connecting the second end portion 5b11 and the second tail portion 5b12. The second end portion 5b11 has a second through hole 5b110 extending through the second end portion 5b11 along a second direction A2-A2. A second insulating sleeve 5b2 is fitted onto the second intermediate portion 5b13. In one embodiment of the present invention, the second conductive terminal 5b1 is flat and made of copper.

[0185] In one assembly method of this utility model, the first adapter sleeve 2b4 is installed in the first mating protrusion 1b13; then, the first connecting conductive terminal module 4b is inserted from the first mounting frame 1b22 into the second housing 1b; then, the first retaining sleeve 2b5 is fixed in the first mounting space 1b161 of the first mounting protrusion 1b16; then, the first elastic washer 2b2 and the first flat washer 2b3 are sequentially fitted onto the first assembly part 2b12; then, the first mating terminal 2b1 is installed on... The second housing 1b is used to pass the first mating portion 2b13 sequentially through the first through hole 4b110 of the first connecting conductive terminal 4b1 and the first mounting through hole 2b44 of the first adapter sleeve 2b4, and then the first mating portion 2b13 extends out of the first mounting through hole 2b44; then, the first mating sealing ring 2b6 is fitted onto the first annular inner wall portion 2b83, and the second mating sealing ring 2b7 is fitted onto the first connecting surface 2b873; then, the first rotating cover 2b8 is fastened to the first mating protrusion 1b13. At this time, the first force-applying protrusion 2b84 is inserted into the first mating hole 2b15. In the embodiment illustrated in this utility model, the first rotating cover 2b8 can move up and down relative to the first mating protrusion 1b13 along the second direction A2-A2.

[0186] In use, the first rotating cover 2b8 is rotated using an external tool. For example, by inserting an external tool into the first perforated groove 2b810 of the first rotating cover 2b8 and applying force to rotate the first rotating cover 2b8, the first rotating cover 2b8 rotates, causing the first mating terminal 2b1 to be further screwed into the first terminal mating hole 2a23. At this time, the distance between the first rotating cover 2b8 and the first mating protrusion 1b13 along the second direction A2-A2 is shortened. The first mating sealing ring 2b6 is axially sealed between the first retaining sleeve 2b5 and the first bottom end face 2b871, and radially sealed between the first annular inner wall portion 2b83 and the inner wall surface of the first mounting protrusion 1b16. The second mating sealing ring 2b7 is axially sealed between the second bottom end face 2b872 and the first edge portion 1b162 of the first mounting protrusion 1b16. In the embodiment illustrated in this utility model, the first docking portion 2b13 extends at least partially into the first recessed space 1a131 of the first raised portion 1a13.

[0187] The assembly methods of the second terminal module 3b and the second connecting conductive terminal module 5b of the mating connector 200 are the same as those of the first terminal module 2b and the first connecting conductive terminal module 4b, and will not be described again in this utility model.

[0188] Please combine Figures 24 to 30 As shown, the locking device 6b includes a slider 6b1, a first terminal 6b2 disposed in the slider 6b1, and a first sealing ring 6b3 sleeved on the slider 6b1.

[0189] In the embodiment illustrated in this utility model, the slider 6b1 is made of insulating material and includes a first body portion 6b11, a base 6b12 protruding upward from the first body portion 6b11 along a second direction A2-A2, at least one limiting protrusion 6b13 protruding outward from the base 6b12, a first protrusion 6b14 protruding to one side from the first body portion 6b11, a second protrusion 6b15 protruding to the other side from the first body portion 6b11, an extension block 6b16 protruding downward from the first body portion 6b11 along the second direction A2-A2, an unlocking portion 6b17 extending and protruding from the first body portion 6b11 along a first direction A1-A1, a spring arm 6b18 connected to the unlocking portion 6b17 along the first direction A1-A1, and a first insertion portion 6b19 integrally extended from the first body portion 6b11 along the first direction A1-A1. The first insertion portion 6b19 is located above the spring arm 6b18 along the second direction A2-A2.

[0190] In the embodiment illustrated in this utility model, the first protrusion 6b14 is provided with an inclined first retaining surface 6b141. The second protrusion 6b15 is provided with an inclined second retaining surface 6b151. In the embodiment illustrated in this utility model, the inclination directions of the first retaining surface 6b141 and the second retaining surface 6b151 are different. The first retaining surface 6b141 and the second retaining surface 6b151 form an acute angle. When the first rotating cover 2b8 and the second rotating cover 3b8 are at an appropriate height, the first protrusion 6b14 engages with the first retaining groove 2b821 of the first rotating cover 2b8, and the second protrusion 6b15 engages with the second retaining groove 3b821 of the second rotating cover 3b8 (e.g., ...). Figure 28 (As shown).

[0191] The extension block 6b16 has a first arc-shaped recess 6b161 and a second arc-shaped recess 6b162 located on its two sides respectively. The first arc-shaped recess 6b161 is adapted to the arc-shaped side of the first rotating cover 2b8, and the second arc-shaped recess 6b162 is adapted to the arc-shaped side of the second rotating cover 3b8. When the first rotating cover 2b8 is not fully rotated into position, the first rotating cover 2b8 is at least partially located in the first arc-shaped recess 6b161. At this time, the first rotating cover 2b8 can block the extension block 6b16, so the slider 6b1 cannot move along the first direction A1-A1 to make the spring arm 6b18 reach the locking position, thus playing a certain role in preventing fooling. Correspondingly, when the second rotating cover 3b8 is not fully rotated into position, the second rotating cover 3b8 is at least partially located in the second arc-shaped recess 6b162. At this time, the second rotating cover 3b8 can block the extension block 6b16, so the slider 6b1 cannot move along the first direction A1-A1 to make the spring arm 6b18 reach the locking position, thus playing a certain role in preventing fooling and improving safety.

[0192] Please combine Figure 24 As shown, those skilled in the art will understand that when the first rotating cover 2b8 and / or the second rotating cover 3b8 are not rotated into position, the first rotating cover 2b8 and / or the second rotating cover 3b8 can block the extension block 6b16, thus preventing the slider 6b1 from being pushed along the first direction A1-A1. Those skilled in the art will understand that when the first rotating cover 2b8 and the second rotating cover 3b8 are not rotated into position, this means that the first mating terminal 2b1 and the second mating terminal 3b1 are not fully inserted, potentially resulting in a loose connection. In this case, because the slider 6b1 cannot be pushed along the first direction A1-A1, the problem of this loose connection being mistaken for a reliable contact is reduced.

[0193] Please combine Figure 25 As shown, those skilled in the art will understand that when the first rotating cover 2b8 is rotated into position, it completely disengages from the first arc-shaped recess 6b161 along the second direction A2-A2; when the second rotating cover 3b8 is rotated into position, it completely disengages from the second arc-shaped recess 6b162 along the second direction A2-A2. At this time, the first rotating cover 2b8 and the second rotating cover 3b8 no longer obstruct the extension block 6b16, so the slider 6b1 can be pushed along the first direction A1-A1, thereby causing the spring arm 6b18 to reach the locking position. At the same time, the first protrusion 6b14 engages with the first slot 2b821 of the first rotating cover 2b8, and the second protrusion 6b15 engages with the second slot 3b821 of the second rotating cover 3b8 to prevent the first rotating cover 2b8 and the second rotating cover 3b8 from falling off.

[0194] The base 6b12 is inserted into the first mounting guide groove 1b1531, the receiving groove 1b155, and the second mounting guide groove 1b1541. The limiting protrusion 6b13 abuts against the first stop surface 1b1532 or the second stop surface 1b1542 to prevent the slider 6b1 from falling off the second housing 1b.

[0195] The spring arm 6b18 is cantilevered and has a hook 6b181 at its free end. The hook 6b181 has a guide inclined surface 6b1811 and a locking surface 6b1812. The spring arm 6b18 can elastically deform around a fulcrum. As the spring arm 6b18 moves from the unlocked position to the locked position, the guide inclined surface 6b1811 engages with the protrusion 1b252. When the spring arm 6b18 reaches the locked position, the locking surface 6b1812 locks with the protrusion 1b252.

[0196] The unlocking part 6b17 is used to apply an unlocking force, thereby causing the spring arm 6b18 to elastically deform around the fulcrum, so as to achieve unlocking.

[0197] The first terminal 6b2 is assembled and fixed in the slider 6b1. The first terminal 6b2 includes a first pin portion 6b21 and a second pin portion 6b22. The first insertion portion 6b19 is provided with a first positioning groove 6b191 located on its outer side, and a first sealing ring 6b3 is held in the first positioning groove 6b191. The first insertion portion 6b19 is also provided with a fixing groove 6b192 extending through the first insertion portion 6b19 along the first direction A1-A1, and the first terminal 6b2 is fixed in the fixing groove 6b192. Both the first pin portion 6b21 and the second pin portion 6b22 extend out of the first insertion portion 6b19 along the first direction A1-A1.

[0198] Please combine Figures 31 to 39 As shown, the mounting assembly 7b includes an insulating block 7b1, a second terminal 7b2 mounted in the insulating block 7b1, a third terminal 7b3 mounted in the insulating block 7b1, a first sealing plug 7b4 cooperating with the second terminal 7b2, a second sealing plug 7b5 cooperating with the third terminal 7b3, a second sealing ring 7b6 sleeved on the insulating block 7b1, and a pin 7b7 mounted on the insulating block 7b1. Of course, those skilled in the art will understand that in other embodiments of this invention, in applications where waterproofing requirements are not high, the mounting assembly 7b may omit one or more of the first sealing plug 7b4, the second sealing plug 7b5, and the second sealing ring 7b6.

[0199] The insulating block 7b1 includes a second body portion 7b11, a second insertion portion 7b12, a transition portion 7b13 connected between the second body portion 7b11 and the second insertion portion 7b12 along a first direction A1-A1, and a first receiving hole 7b14 and a second receiving hole 7b15 penetrating the insulating block 7b1 along the first direction A1-A1.

[0200] In the embodiment illustrated in this utility model, the second body portion 7b11 is provided with a first locking block 7b111 protruding upward along the second direction A2-A2, a second locking block 7b112 protruding downward along the second direction A2-A2, and a limiting protrusion 7b113 protruding upward along the second direction A2-A2. The limiting protrusion 7b113 and the first locking block 7b111 are located on the same side of the second body portion 7b11. The limiting protrusion 7b113 and the first locking block 7b111 are spaced apart along the first direction A1-A1. In addition, the second body portion 7b11 also provides a tapered guide surface 7b114 near the transition portion 7b13.

[0201] The transition section 7b13 is provided with a second positioning groove 7b131 located on its outer side, and the second sealing ring 7b6 is held in the second positioning groove 7b131.

[0202] The second insertion portion 7b12 has a first wall portion 7b121 (e.g., a side wall portion) and a second wall portion 7b122 (e.g., a bottom wall portion) connected to the first wall portion 7b121. The first wall portion 7b121 has a mounting opening 7b1211 that penetrates the first wall portion 7b121 and communicates with the first receiving hole 7b14 and the second receiving hole 7b15. In addition, the first wall portion 7b121 also has a guide block 7b1212 that protrudes into the mounting opening 7b1211 and a retaining slot 7b1213 located at the upper end of the guide block 7b1212 and communicating with the mounting opening 7b1211. The guide block 7b1212 has a guide ramp 7b1214. The second wall portion 7b122 has a receiving recess 7b1221 that communicates with the mounting opening 7b1211.

[0203] The latch 7b7 includes a side plate 7b71 installed in the mounting opening 7b1211, a base plate 7b72 connected to the side plate 7b71, and a first abutting protrusion 7b73 and a second abutting protrusion 7b74 protruding inward from the inner wall surface of the side plate 7b71. The first abutting protrusion 7b73 and the second abutting protrusion 7b74 are spaced apart along a second direction A2-A2. The first abutting protrusion 7b73 and the second abutting protrusion 7b74 protrude from the mounting opening 7b1211 into the first receiving hole 7b14 and the second receiving hole 7b15, respectively. The side plate 7b71 is provided with a locking hook portion 7b711 protruding along a first direction A1-A1.

[0204] The second terminal 7b2 includes a first cable connection portion 7b21, a first limiting portion 7b22 connected to one end of the first cable connection portion 7b21, and a first mating portion 7b23 connected to the other end of the first cable connection portion 7b21. The first limiting portion 7b22 is radially enlarged compared to the first cable connection portion 7b21 to limit the first sealing plug 7b4 and prevent the first sealing plug 7b4 from falling off the second terminal 7b2. The first mating portion 7b23 is generally frame-shaped and has a first insertion hole 7b231 for receiving the first insertion pin portion 6b21.

[0205] Similarly, the third terminal 7b3 includes a second cable connection portion 7b31, a second limiting portion 7b32 connected to one end of the second cable connection portion 7b31, and a second mating portion 7b33 connected to the other end of the second cable connection portion 7b31. The second limiting portion 7b32 is radially enlarged compared to the second cable connection portion 7b31 to limit the second sealing plug 7b5 and prevent the second sealing plug 7b5 from falling off the third terminal 7b3. The second mating portion 7b33 is generally frame-shaped and has a second insertion hole 7b331 for receiving the second pin portion 6b22.

[0206] When assembling and installing component 7b, firstly, the first sealing plug 7b4 and the second sealing plug 7b5 are respectively fitted onto the first low-voltage wire harness (not shown) and the second low-voltage wire harness (not shown); then, the first low-voltage wire harness (not shown) and the second low-voltage wire harness (not shown) are respectively pressed and connected to the first cable connection part 7b21 and the second cable connection part 7b31; then, the first sealing plug 7b4 and the second sealing plug 7b5 are respectively fitted onto the first cable connection part 7b21 and the second cable connection part 7b31; at this time, the two ends of the first sealing plug 7b4... The first sealing plug 7b5 is limited by the first limiting part 7b22 and the first mating part 7b23 respectively; the two ends of the second sealing plug 7b5 are limited by the second limiting part 7b32 and the second mating part 7b33 respectively; then, the second sealing ring 7b6 is held in the second positioning groove 7b131; then, the pin 7b7 is initially installed in the installation opening 7b1211; at this time, the locking hook part 7b711 is not locked in the holding opening 7b1213; then, the second terminal 7b2 and the third terminal 7b3 are inserted and fixed into the first receiving hole 7b14 and the second receiving hole 7b15 respectively. The first sealing plug 7b4 and the second sealing plug 7b5 can seal the second terminal 7b2 and the third terminal 7b3; then, the pin 7b7 is finally installed in the mounting opening 7b1211 along the second direction A2-A2; at this time, the locking hook 7b711 passes over the guide block 7b1212 and locks in the retaining opening 7b1213, and the base plate 7b72 is received in the receiving recess 7b1221; finally, the mounting assembly 7b is inserted into the first assembly space 1b242 along the first direction A1-A1. The second insertion part 7b12 is at least partially inserted into the second mounting protrusion 1b25, the second sealing ring 7b6 seals the mounting assembly 7b, the tapered guide surface 7b114 fits against the guide tapered surface 1b2411, the limiting wall surface 1b2412 blocks the limiting protrusion 7b113, and the first locking block 7b111 and the second locking block 7b112 are locked in the locking hole 1b243 to prevent the mounting assembly 7b from falling off.

[0207] When the electrical connector 100 mates with the mating connector 200, guided by the second tapered surface 1a311, the first inclined surface 7a212, and the second inclined surface 7a312 of the electrical connector 100, the guiding tapered surface 1b180 of the mating connector 200 mates with the second tapered surface 1a311, the first mating tapered surface 1b1311 of the mating connector 200 mates with the first inclined surface 7a212, and the second mating tapered surface 1b1411 of the mating connector 200 mates with the second inclined surface 7a312. This allows the second housing 1b of the mating connector 200 to achieve blind mating with the first housing 1a of the electrical connector 100, reducing the problem of the electrical connector 100 and the mating connector 200 failing to mate due to accumulated tolerances. After the electrical connector 100 and the mating connector 200 are inserted into place along the second direction A2-A2, a tool is used to insert into the first pentagonal groove 2b810 of the first rotating cover 2b8 and the second pentagonal groove 3b810 of the second rotating cover 3b8 to rotate the first rotating cover 2b8 and the second rotating cover 3b8. Under the direct or indirect drive of the first rotating cover 2b8 and the second rotating cover 3b8, the first mating terminal 2b1 and the second mating terminal 3b1 move along the second direction A2-A2 while rotating, so that the first mating part 2b13 and the second mating part 3b13 are screwed into the first terminal mating hole 2a23 and the second terminal mating hole 3a23, respectively. When the electrical connector 100 is provided with the first toothed sleeve 2a3 and the second toothed sleeve 3a3, the first mating thread 2b131 of the first mating part 2b13 and the second mating thread 3b131 of the second mating part 3b13 respectively engage with the threads of the first toothed sleeve 2a3 and the second toothed sleeve 3a3 to improve the mating reliability.

[0208] When the first rotating cover 2b8 and the second rotating cover 3b8 are rotated into position, the locking device 6b can be moved along the first direction A1-A1, thereby causing the spring arm 6b18 to reach the locking position and lock with the protrusion 1b252. At this time, the first pin portion 6b21 and the second pin portion 6b22 of the first terminal 6b2 are respectively inserted into the second terminal 7b2 and the third terminal 7b3 to achieve electrical conduction.

[0209] Compared to related technologies, this invention eliminates the need to disassemble the mating connector 200 when mates with the electrical connector 100, reducing the risk of electric shock and improving the ease of mating. Electrical connection between the first mating terminal 2b1 and the second mating terminal 3b1 and the first cable assembly 2a and the second cable assembly 3a can be achieved by rotating the first rotating cover 2b8 and the second rotating cover 3b8, respectively. In the embodiment illustrated in this invention, the conductive elements of the mating connector 200 include only two screws (i.e., the first mating terminal 2b1 and the second mating terminal 3b1), thereby reducing the number of parts and improving the ease of mating.

[0210] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of the present utility model should be based on those skilled in the art. Although the present utility model 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 utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A first cable assembly (2a) characterized by, The first cable (2a1) is at least partially accommodated in the first accommodating space (2a43), and the second clamping portion (3a25) is clamped in the first clamping groove (2a45). The first connecting wall (2a44) is provided with a first matching surface (2a211) which is locked with the first shell (1a). The first side wall portion (2a41) is provided with a first groove (2a411), and the second side wall portion (2a42) is provided with a second groove (2a421), and the first groove (2a411), the second groove (2a421) and the first accommodating space (2a43) jointly form a first insertion slot which at least partially accommodates the first cable (2a1). The first clamping sleeve (2a4) is an insulating clamping sleeve. The first cable (2a1) comprises a first core (2a11) provided with a first surface (2a111), a second surface (2a112) opposite to the first surface (2a111), and a first mounting hole (2a110) penetrating through the first surface (2a111) and the second surface (2a112); 2. The first cable assembly (2a) of claim 1, characterized in that: The first terminal mounting block (2a2) comprises a first base portion (2a21) and a first extension portion (2a22), both of which are cylindrical, the diameter of the first base portion (2a21) is greater than that of the first extension portion (2a22), the first extension portion (2a22) is fixed in the first mounting hole (2a110), and the first base portion (2a21) protrudes from the first surface (2a111).

3. The first cable assembly (2a) of claim 1, characterized in that: The second clamping portion (3a25) protrudes from the first base portion (2a21), and the second clamping portion (3a25) and the first extension portion (2a22) are respectively located on both sides of the first base portion (2a21).

4. The first cable assembly (2a) of claim 1, characterized in that: The second clamping portion (3a25) is cylindrical, and the diameter of the first base portion (2a21) is greater than that of the second clamping portion (3a25).

5. The first cable assembly (2a) of claim 1, characterized in that: The first terminal mounting block (2a2) comprises a first terminal butt joint hole (2a23). ​ 6. The first cable assembly (2a) of claim 5, characterized in that: ​ 7. The first cable assembly (2a) of claim 6, characterized in that: ​ 8. The first cable assembly (2a) according to any one of claims 1 to 7, characterized in that: ​ 9. The first cable assembly (2a) of claim 8, characterized in that: The first cable assembly (2a) further comprises a first sleeve (2a3) installed in the first terminal butt joint hole (2a23).

10. The first cable assembly (2a) of claim 9, characterized in that: The first terminal butt joint hole (2a23) is a first threaded hole; the first sleeve (2a3) is in the shape of a coiled spring and is fixed in the first threaded hole; a first blocking protrusion (2a24) is arranged on the inner wall of the first terminal mounting block (2a2) and protrudes into the first terminal butt joint hole (2a23); and the first blocking protrusion (2a24) limits the first sleeve (2a3) to prevent the first sleeve (2a3) from being separated from the first terminal butt joint hole (2a23).

11. An electrical connector (100) characterized by, Comprise: a first shell (1a) comprising a first terminal receiving groove (1a15) and a first locking surface (1a112); and a first cable assembly (2a) as claimed in any one of claims 1 to 10, which is at least partially installed in the first terminal receiving groove (1a15), and wherein the first connecting wall (2a44) of the first cable assembly (2a) is provided with a first matching surface (2a211) which is locked with the first locking surface (1a112).

12. The electrical connector (100) of claim 11, characterized in that: The first shell (1a) is provided with a first guide inclined surface (1a111) arranged obliquely, which guides the first cable assembly (2a) to be inserted into the first terminal receiving groove (1a15).

13. The electrical connector (100) of claim 11, characterized in that: The electrical connector (100) further comprises: a first sealing ring (4a) comprising a first sleeving portion (4a1) sleeved on the first cable (2a1); and a tail cover (5a) fixed to the first shell (1a).

14. The electrical connector (100) of claim 13, characterized in that: The first sealing ring (4a) comprises a first extension piece (4a11) and a second extension piece (4a12) respectively extending from the first sleeving portion (4a1), and the first extension piece (4a11) and the second extension piece (4a12) are arranged between the tail cover (5a) and the first cable (2a1).

15. The electrical connector (100) of claim 14, characterized in that: The tail cover (5a) comprises a first frame portion (5a2) provided with a first mounting slot (5a20), a first inner wall surface (5a21) exposed in the first mounting slot (5a20), and a second inner wall surface (5a22) exposed in the first mounting slot (5a20) and opposite to the first inner wall surface (5a21); the first cable (2a1) passes through the first mounting slot (5a20); the first extension piece (4a11) is clamped between the first cable (2a1) and the first inner wall surface (5a21); and the second extension piece (4a12) is clamped between the first cable (2a1) and the second inner wall surface (5a22).

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