Electric connector and connector assembly

Abstract

An electric connector comprises a first shell, a second sealing ring and a buckling cover. The first shell comprises a first main body part, a first shielding cover part and a first annular groove. The first main body part comprises a first protruding part, and the first annular groove is located between the first protruding part and the first shade part. The first shade part is provided with a second conical surface exposed out of the first annular groove. The second sealing ring is at least partially installed in the first annular groove. The second sealing ring comprises an axial sealing part and a radial sealing part. The buckling cover is fixed to the first shell and comprises a pressing plate part, and the pressing plate part abuts against the second sealing ring. And axial and radial sealing can be realized by arranging the second sealing ring, so that the sealing performance is improved. The invention further discloses a connector assembly with the electric connector.

Description

Background Art

[0002] In related art, a connector assembly includes an electrical connector and a docking connector that mates with the electrical connector. The electrical connector includes a first housing and conductive terminals disposed in the first housing. The docking connector includes a second housing and docking conductive terminals disposed in the second housing. When the electrical connector mates with the docking connector, the conductive terminals come into contact with the docking conductive terminals.

[0003] With the rapid development of industries such as electric vehicles, how to transfer electric power from a charging dock to a battery pack is a technical problem faced by those skilled in the art. Due to reasons such as cumulative tolerances, it is difficult to dock the electrical connector and the docking connector in related art, and it is inconvenient to use.

[0004] When the conductive terminals of the electrical connector in related art mate with the docking conductive terminals of the docking connector, it is often necessary to open the cover and then use external tools to achieve the mating of the two. This docking method is cumbersome. Opening the cover means the exposure of related conductive elements, posing a safety hazard of electric shock.

[0005] In addition, there is also room for improvement in the sealing design of the electrical connector and the docking connector in related art. Summary of the Invention

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

[0007] To achieve the above purpose, the present invention adopts the following technical solutions: An electrical connector, which includes:

[0008] A first housing, the first housing includes a first main body portion, a first mask portion, and a first annular groove. The first main body portion includes a first protrusion portion. The first annular groove is located between the first protrusion portion and the first mask portion. The first mask portion is provided with a second tapered surface exposed in the first annular groove;

[0009] A second sealing ring, at least part of the second sealing ring is installed in the first annular groove. The second sealing ring includes an axial sealing portion and a radial sealing portion; and

[0010] A retaining cover, the retaining cover is fixed to the first housing. The retaining cover includes a pressing plate portion, and the pressing plate portion abuts against the second sealing ring.

[0011] As a further improved technical solution of the present invention, the second sealing ring includes a first sealing portion located in the inner circle, a second sealing portion located in the outer circle, and a third sealing portion connecting the first sealing portion and the second sealing portion. The axial sealing portion includes the first sealing portion and the second sealing portion, and the radial sealing portion includes the third sealing portion.

[0012] As a further improved technical solution of the present invention, the first main body portion includes a first inner wall portion exposed in the first annular groove, and the second sealing portion abuts against the first inner wall portion.

[0013] As a further improved technical solution of the present invention, the first convex portion is provided with a first bottom surface located at the bottom of the first convex portion, and the first sealing portion is clamped between the first bottom surface and the pressing plate portion.

[0014] As a further improved technical solution of the present invention, the first convex portion is provided with a first conical surface exposed outwardly in the first annular groove, and the third sealing portion is sleeved on the first conical surface.

[0015] As a further improved technical solution of the present invention, the first convex portion includes a first mounting opening;

[0016] The fastening cover includes a first sleeve portion connected to the pressing plate portion. The first surrounding wall is received in the first mounting opening. The first sleeve portion is provided with a first surrounding wall and a first receiving cavity surrounded by the first surrounding wall.

[0017] As a further improved technical solution of the present invention, the first surrounding wall is provided with a first inclined surface exposed in the first receiving cavity, and both the first inclined surface and the second conical surface guide the docking connector.

[0018] As a further improved technical solution of the present invention, the electrical connector further includes a first cable assembly. The first cable assembly includes a first cable and a first terminal mounting block fixed to the first cable; the first terminal mounting block includes a first terminal docking hole.

[0019] As a further improved technical solution of the present invention, the first cable assembly further includes a first dental brace mounted in the first terminal docking hole.

[0020] As a further improved technical solution of the present invention, the first terminal docking hole is a first threaded hole; the first dental brace is in the shape of a wound spring and is fixed in the first threaded hole; a first blocking protrusion protruding into the first terminal docking hole is provided on the inner wall of the first terminal mounting block, and the first blocking protrusion limits the first dental brace.

[0021] As a further improved technical solution of the present invention, the first cable includes a first core body. The first core body is provided with a first surface, a second surface opposite to the first surface, and a first mounting hole penetrating the first surface and the second surface;

[0022] The first terminal mounting block includes a first base portion and a first extension portion. Both the first base portion and the first extension portion are cylindrical. The diameter of the first base portion is greater than the diameter of the first extension portion. The first extension portion is fixed in the first mounting hole, and the first base portion protrudes from the first surface to be buckled with the first housing.

[0023] As a further improved technical solution of the present invention, the clamping cover includes a first sleeve portion connected to the pressing plate portion. The first surrounding wall is received in the first installation opening. The first sleeve portion is provided with a first surrounding wall and a first receiving cavity surrounded by the first surrounding wall;

[0024] The first extension portion is provided with a first exposed surface exposed in the first receiving cavity.

[0025] As a further improved technical solution of the present invention, the first housing includes a first installation portion connected to the first main body portion. The first installation portion is provided with an installation channel;

[0026] The electrical connector includes a first sealing ring that cooperates with the first cable assembly. The first sealing ring includes a first socket portion. The first socket portion is sleeved on the first cable and sealed in the installation channel.

[0027] As a further improved technical solution of the present invention, the first sealing ring includes a first extension piece and a second extension piece respectively extending from the first socket portion;

[0028] The electrical connector further includes a tail cover fixed to the first installation portion. The tail cover includes a first frame portion. The first frame portion is provided with a first installation slot, a first inner wall surface exposed in the first installation slot, and a second inner wall surface exposed in the first installation slot and opposite to the first inner wall surface. The first cable passes through the first installation slot. The first extension piece is clamped between the first cable and the first inner wall surface, and the second extension piece is clamped between the first cable and the second inner wall surface.

[0029] As a further improved technical solution of the present invention, the first shielding portion includes a first tapered portion and a first flanging portion extending outward from the first tapered portion. The second tapered surface is provided on the inner side surface of the first tapered portion. The first flanging portion is provided with a first relief groove and a second relief groove penetrating through the first flanging portion. The first relief groove and the second relief groove are arranged at intervals.

[0030] As a further improved technical solution of the present invention, the electrical connector further includes a first cable assembly. The first cable assembly includes a first cable and a first clamping sleeve that is clamped to the first cable. The first clamping sleeve is buckled with the first housing.

[0031] The present invention also discloses a connector assembly, which includes:

[0032] An electrical connector, the electrical connector being the aforementioned electrical connector; and

[0033] A docking connector, the docking connector includes a second housing. The second housing is provided with a guiding tapered surface, and the guiding tapered surface is adapted to the second tapered surface of the electrical connector.

[0034] As a further improved technical solution of the present invention, the second housing includes a second main body portion. The second main body portion includes a second substrate, a first protruding portion connected to the second substrate, and a plurality of first connecting blocks connecting the second substrate and the first protruding portion. The first protruding portion is provided with a first receiving space for receiving at least part of the electrical connector and a first mating conical surface located on the inner side surface of the first protruding portion and exposed in the first receiving space; each of the first connecting blocks is provided with an inclined first guiding surface, and the guiding conical surface is formed by the first guiding surfaces together.

[0035] As a further improved technical solution of the present invention, the docking connector further includes:

[0036] A first docking terminal, the first docking terminal includes a first docking portion, and the extending direction of the first docking portion is the second direction;

[0037] A first rotating cover, the first rotating cover directly or indirectly drives the first docking terminal to move along the second direction; the first rotating cover includes a first cover body, a first annular outer wall portion protruding from the first cover body, a first annular inner wall portion protruding from the first cover body, and a first annular accommodating groove located between the first annular inner wall portion and the first annular outer wall portion;

[0038] A first docking sealing ring, the first docking sealing ring is located in the first annular accommodating groove; and

[0039] A second docking sealing ring, the second docking sealing ring is located in the first annular accommodating groove, and the first docking sealing ring and the second docking sealing ring are arranged at intervals along the second direction.

[0040] As a further improved technical solution of the present invention, the cross-section of the first docking sealing ring includes a first base portion and a plurality of first abutting protrusions connected to the first base portion and protruding from the first base portion, and the first abutting protrusions are distributed along the circumferential direction of the first base portion;

[0041] The cross-sectional shape of the second docking sealing ring is rectangular; or the cross-section of the second docking sealing ring includes a second base portion and a plurality of second abutting protrusions connected to the second base portion and protruding from the second base portion, and the second abutting protrusions are distributed along the circumferential direction of the second base portion.

[0042] As a further improved technical solution of the present invention, the first cover body of the first rotating cover includes a first stepped surface exposed in the first annular accommodating groove, the first stepped surface includes a first bottom end surface, a second bottom end surface lower than the first bottom end surface, and a first connecting surface connecting the first bottom end surface and the second bottom end surface;

[0043] The first docking sealing ring is sleeved on the first annular inner wall portion;

[0044] The second docking sealing ring is sleeved on the first connecting surface.

[0045] As a further improved technical solution of the present invention, the first docking terminal includes a first abutting portion and a first assembling portion connected to the first abutting portion along a second direction; the first docking portion is connected to the first assembling portion along the second direction;

[0046] The docking connector further includes a first elastic washer sleeved on the first assembling portion and a first flat washer sleeved on the first assembling portion, and the first elastic washer is located between the first abutting portion and the first flat washer along the second direction.

[0047] Compared with the prior art, the second sealing ring of the present invention includes an axial sealing portion and a radial sealing portion. By providing the axial sealing portion and the radial sealing portion, sealing in the axial and radial directions is achieved, thereby improving the sealing performance. Description of the Drawings

[0048] Figure 1 is a three-dimensional schematic diagram when the connector components in the first embodiment of the present invention are docked together;

[0049] Figure 2 is Figure 1 a three-dimensional schematic diagram from another angle;

[0050] Figure 3 is Figure 1 a three-dimensional exploded view, where the electrical connector and the docking connector are separated from each other;

[0051] Figure 4 is Figure 3 another three-dimensional exploded view;

[0052] Figure 5 is Figure 4 a partial three-dimensional exploded view of the electrical connector in;

[0053] Figure 6 is Figure 5 another partial three-dimensional exploded view;

[0054] Figure 7 is Figure 6 a three-dimensional exploded view of the tail cover, the first sealing ring, the first cable, the first terminal mounting block, the second cable, and the second terminal mounting block in;

[0055] Figure 8 is Figure 7 another three-dimensional exploded view;

[0056] Figure 9 is Figure 7 a three-dimensional exploded view of the first terminal mounting block and the second terminal mounting block in;

[0057] Figure 10 is Figure 9 another three-dimensional exploded view;

[0058] Figure 11 is the schematic cross-sectional view along Figure 3 the D-D line in

[0059] Figure 12 is Figure 11 a partial exploded view of , in which the second sealing ring and the fastening cover are separated;

[0060] Figure 13 is the schematic cross-sectional view along Figure 3 the E-E line in

[0061] Figure 14 is Figure 13 a partial exploded view of , in which the second sealing ring and the fastening cover are separated;

[0062] Figure 15 is the three-dimensional schematic view when the connector components in the second embodiment of the present invention are docked together;

[0063] Figure 16 is Figure 15 the three-dimensional schematic view when the tail cover, the first sealing ring, the first cable, the first terminal mounting block, the second cable, the second terminal mounting block, the first clamping sleeve and the second clamping sleeve in are assembled together;

[0064] Figure 17 is Figure 16 a partial three-dimensional exploded view of , in which the first clamping sleeve and the second clamping sleeve are separated;

[0065] Figure 18 is Figure 17 a further three-dimensional exploded view;

[0066] Figure 19 is Figure 18 a three-dimensional exploded view from another angle;

[0067] Figure 20 is the schematic cross-sectional view along Figure 15 the H-H line in

[0068] Figure 21 is Figure 20 the partial enlarged view of the framed part J in ;

[0069] Figure 22 is the schematic cross-sectional view along Figure 15 the I-I line in

[0070] Figure 23 is Figure 22 the partial enlarged view of the framed part K in ;

[0071] Figure 24 is Figure 2Schematic perspective view of the docking connector in [a certain context] from another angle, where the first rotating cover and the second rotating cover have not been rotated into place;

[0072] Figure 25 is Figure 24 Schematic perspective view in another state, where the first rotating cover and the second rotating cover have been rotated into place;

[0073] Figure 26 is Figure 2 Partial schematic exploded view of the docking connector in [a certain context], where the locking device and the mounting component are separated;

[0074] Figure 27 is Figure 26 Partial schematic exploded view from another angle;

[0075] Figure 28 is Figure 25 Partial schematic exploded view of the docking connector in [a certain context], where the locking device is separated;

[0076] Figure 29 is Figure 26 Schematic exploded view of the locking device;

[0077] Figure 30 is Figure 29 Schematic exploded view from another angle;

[0078] Figure 31 is Figure 2 Partial schematic exploded view of the docking connector in [a certain context], where the mounting component is separated;

[0079] Figure 32 is Figure 31 Left view of the mounting component in [a certain context];

[0080] Figure 33 is Figure 30 Schematic perspective view of the mounting component in its initial state in [a certain context];

[0081] Figure 34 is Figure 33 Partial schematic exploded view of [a certain part], where the bolt is separated;

[0082] Figure 35 is Figure 34 Left view of [a certain part];

[0083] Figure 36 is along Figure 33 Schematic cross-sectional view along the M - M line in [a certain context];

[0084] Figure 37 is along Figure 32 Schematic cross-sectional view along the L - L line in [a certain context];

[0085] Figure 38 is Figure 34 a further three-dimensional exploded view;

[0086] Figure 39 is Figure 38 a three-dimensional exploded view from another angle;

[0087] Figure 40 is the removal of Figure 25 a partial three-dimensional exploded view after removing the latch device and the mounting assembly in;

[0088] Figure 41 is Figure 40 a partial three-dimensional exploded view from another angle;

[0089] Figure 42 is Figure 40 a further partial three-dimensional exploded view;

[0090] Figure 43 is Figure 42 a partial three-dimensional exploded view from another angle;

[0091] Figure 44 is Figure 42 a three-dimensional exploded view of the first connecting conductive terminal module, part of the first terminal module, the second connecting conductive terminal module, and part of the second terminal module in;

[0092] Figure 45 is Figure 44 a three-dimensional exploded view from another angle;

[0093] Figure 46 is the removal of Figure 25 a partial three-dimensional exploded view after removing the latch device and the mounting assembly in, where the third docking sealing ring, the fourth docking sealing ring, and the second rotating cover are separated;

[0094] Figure 47 is Figure 46 a partial three-dimensional exploded view from another angle;

[0095] Figure 48 is Figure 46 a further partial three-dimensional exploded view, where the second fastening sleeve is further separated;

[0096] Figure 49 is a schematic cross-sectional view along Figure 3 the F-F line in;

[0097] Figure 50 is Figure 49 a partial enlarged view of the framed part N in;

[0098] Figure 51 is Figure 50 a schematic cross-sectional view in another embodiment;

[0099] Figure 52 is Figure 50 a schematic cross-sectional view in another state, where the first rotary cover is not rotated in place;

[0100] Figure 53 is along Figure 3 a schematic cross-sectional view taken along line G-G in ;

[0101] Figure 54 is Figure 53 a partial enlarged view of the framed part O in ;

[0102] Figure 55 is Figure 54 a schematic cross-sectional view in another embodiment;

[0103] Figure 56 is Figure 54 a schematic cross-sectional view in another state, where the second rotary cover is not rotated in place;

[0104] Figure 57 is Figure 2 a top view of , where the locking device is in a non-locked position;

[0105] Figure 58 is Figure 57 a top view in another state, where the locking device is in a locked position;

[0106] Figure 59 is along Figure 57 a schematic cross-sectional view taken along line P-P in ;

[0107] Figure 60 is along Figure 58 a schematic cross-sectional view taken along line Q-Q in ;

[0108] Figure 61 is Figure 60 a partial enlarged view of the framed part R in ;

[0109] Figure 62 is along Figure 1 a schematic cross-sectional view taken along line B-B in , and the electrical connector and the docking connector are in a separated state from each other;

[0110] Figure 63 is along Figure 1 a schematic cross-sectional view taken along line C-C in . Detailed implementation mode

[0111] The exemplary specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. If there are several specific embodiments, the features in these embodiments can be combined with each other without conflict. When the description refers to the accompanying drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The content described in the following exemplary specific embodiments does not represent all embodiments consistent with the present invention; on the contrary, they are merely examples of devices, products, and / or methods that are consistent with some aspects of the present invention as recited in the claims of the present invention.

[0112] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present invention. The singular forms "a", "the", or "said" used in the specification and claims of the present invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0113] It should be understood that terms such as "first", "second", and similar words used in the specification and claims of the present invention do not indicate any order, quantity, or importance, but are only used to distinguish the named features. Similarly, words such as "a" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Unless otherwise indicated, words such as "front", "rear", "upper", "lower", etc. that appear in the present invention are only for convenience of description and are not limited to a specific position or a spatial orientation. The expression "comprising" or "including" is an open-ended expression, meaning that the elements appearing before "comprising" or "including" cover the elements appearing after "comprising" or "including" and their equivalents, and this does not exclude that the elements appearing before "comprising" or "including" may also include other elements. If "several" appears in the present invention, it means two or more.

[0114] Please refer to Figures 1 to 63 As shown, the present invention discloses a connector assembly, which includes an electrical connector 100 and a docking connector 200 that cooperates with the electrical connector 100. In one embodiment of the present invention, the connector assembly is used in a new energy vehicle to transfer electric power from a charging seat to a battery pack. In the illustrated embodiment of the present invention, the electrical connector 100 is a plug cable end connector, which is used to connect to a power source; the docking connector 200 is a socket board end connector, which is used to connect to a battery pack.

[0115] Please combine Figure 5 and Figure 6As shown, in the illustrated embodiment of the present invention, 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 cover 5a fixed to the first housing 1a, a second sealing ring 6a installed in the first housing 1a, and a clamping cover 7a fixed to the first housing 1a.

[0116] In one embodiment of the present invention, the first housing 1a is made of an insulating material and includes a first main body portion 1a1, a first mounting portion 1a2 integrally extending from the first main body portion 1a1 along a first direction A1-A1 (for example, the front-rear direction), and a first shielding portion 1a3 integrally extending from the first main body portion 1a1 along a second direction A2-A2 (for example, the up-down direction). The first direction A1-A1 is perpendicular to the second direction A2-A2. The first shielding portion 1a3 protrudes downward from the first main body portion 1a1 and the first mounting portion 1a2 along the second direction A2-A2.

[0117] The first main body portion 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 protrusion portion 1a17 protruding downward from the first inner wall portion 1a12 along the second direction A2-A2.

[0118] The first raised portion 1a13 and the second raised portion 1a14 are spaced apart along a third direction A3-A3 (for example, the left-right direction). A first recessed space 1a131 is provided inside the first raised portion 1a13 (as Figure 11 shown), and the first recessed space 1a131 communicates with the first terminal receiving groove 1a15 along the second direction A2-A2. Similarly, a second recessed space 1a141 is provided inside the second raised portion 1a14 (as Figure 13 shown), and the second recessed space 1a141 communicates with 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.

[0119] Please refer to Figure 11As shown, in the illustrated embodiment of the present invention, on the inner side of the first outer wall portion 1a11, there are further provided a first guiding inclined surface 1a111 inclined along the first direction A1-A1 and a first locking surface 1a112 extending along the second direction A2-A2. The first guiding inclined surface 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 in place, so as to prevent the first cable assembly 2a from falling out of the first terminal receiving groove 1a15.

[0120] Similarly, please refer to Figure 13 As shown, in the illustrated embodiment of the present invention, on the inner side of the first outer wall portion 1a11, there are further provided a second guiding inclined surface 1a113 inclined along the first direction A1-A1 and a second locking surface 1a114 extending along the second direction A2-A2. The second guiding inclined surface 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 in place, so as to prevent the second cable assembly 3a from falling out of the second terminal receiving groove 1a16.

[0121] Please refer to Figure 5 As shown, the first protrusion portion 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 illustrated embodiment of the present invention, the first mounting opening 1a171 and the second mounting opening 1a172 are arranged at intervals along the third direction A3-A3. Both the first mounting opening 1a171 and the second mounting opening 1a172 are cylindrical holes. The first main body portion 1a1 includes a first inner surface 1a173 exposed in the first mounting opening 1a171 and at least one first clamping protrusion 1a174 protruding from the first inner surface 1a173. In the illustrated embodiment of the present invention, the first inner surface 1a173 is cylindrical, and the first clamping protrusions 1a174 are several and are circumferentially spaced apart along the first inner surface 1a173. In the illustrated embodiment of the present invention, the first clamping protrusions 1a174 and the first main body portion 1a1 are integrally formed to improve the structural strength. Each first clamping protrusion 1a174 includes a first inclined surface 1a1741 and a first abutting surface 1a1742.

[0122] Similarly, the second main body portion 1a1 includes a second inner surface 1a175 exposed in the second mounting opening 1a172 and at least one second latching projection 1a176 protruding from the second inner surface 1a175. In the illustrated embodiment of the present invention, the second inner surface 1a175 is cylindrical, and there are a plurality of second latching projections 1a176 which are circumferentially spaced along the second inner surface 1a175. In the illustrated embodiment of the present invention, the second latching projections 1a176 are integrally formed with the first main body portion 1a1 to improve the structural strength. Each second latching projection 1a176 includes a second inclined surface 1a1761 and a second abutting surface 1a1762.

[0123] In the illustrated embodiment of the present invention, the first mask portion 1a3 is disposed around the periphery of the first protrusion portion 1a17. The first housing 1a includes a first annular groove 1a4 located between the first mask portion 1a3 and the first protrusion portion 1a17. The first inner wall portion 1a12 is downwardly exposed in the first annular groove 1a4. The first protrusion portion 1a17 is provided with a first tapered surface 1a177 outwardly exposed in the first annular groove 1a4 and a first bottom surface 1a178 located at the bottom of the first protrusion portion 1a17. In the illustrated embodiment of the present invention, the first protrusion portion 1a17 is provided with a plurality of first escape holes 1a179 penetrating the first bottom surface 1a178 along the second direction A2-A2.

[0124] Please refer to Figure 6 As shown, the first mounting portion 1a2 is provided with a mounting channel 1a21 communicating with the first terminal receiving groove 1a15 and the second terminal receiving groove 1a16 and a first inner side surface 1a22 exposed in the mounting channel 1a21. The first inner side surface 1a22 is substantially elliptical. The first mounting portion 1a2 is further provided with a plurality of positioning ribs 1a23 and a plurality of locking bumps 1a24 on its outer side surface.

[0125] The first mask portion 1a3 includes a first tapered portion 1a31 and a first flanging portion 1a32 extending outward from the bottom of the first tapered portion 1a31. The first tapered portion 1a31 includes a second tapered surface 1a311 on its inner side surface. Please refer to Figure 12 As shown, in the illustrated embodiment of the present invention, the inclination directions of the first tapered surface 1a177 and the second tapered surface 1a311 are opposite to form a flared opening to facilitate the insertion of the element. Please refer to Figure 5 As shown, in the illustrated embodiment of the present invention, the first flanging portion 1a32 is provided with a first relief groove 1a321 and a second relief groove 1a322 penetrating the first flanging portion 1a32 along the second direction A2-A2. The first relief groove 1a321 and the second relief groove 1a322 are spaced apart and are both located on the side opposite to the first mounting portion 1a2.

[0126] Please refer toFigure 7 and Figure 8 As shown in Figure 8 , in the 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 an 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 an 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., the upper surface), a second surface 2a112 (e.g., the lower surface) opposite to the first surface 2a111, and a first mounting hole 2a110 extending through the first surface 2a111 and the second surface 2a112 along the second direction A2-A2.

[0127] The first terminal mounting block 2a2 is at least partially fixed in the first mounting hole 2a110. In an embodiment of the present invention, the first terminal mounting block 2a2 is fixed to the first core 2a11 by welding. In an embodiment of the present invention, the first terminal mounting block 2a2 is made of copper to improve the welding quality. Of course, those skilled in the art can 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. At this time, the first mounting hole 2a110 serves as a first terminal docking hole 2a23 to contact the docking 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 illustrated embodiment of the present invention, both the first base 2a21 and the first extension 2a22 are cylindrical. The diameter of the first base 2a21 is greater than the diameter of the first extension 2a22. The first terminal mounting block 2a2 further includes a first terminal docking hole 2a23. In the illustrated embodiment of the present invention, the first terminal docking hole 2a23 extends through the first base 2a21 and the first extension 2a22 along the second direction A2-A2. The first terminal docking hole 2a23 is a first threaded hole to improve the docking reliability. The first extension 2a22 has a first exposed surface 2a221 exposed downward along the second direction A2-A2 in the first receiving cavity 7a22 (as Figure 10 shown).

[0128] Preferably, in order to further improve the docking reliability, in an embodiment of the present invention, the first cable assembly 2a further includes a first tooth sleeve 2a3 installed in the first terminal docking hole 2a23. In the illustrated embodiment of the present invention, the first terminal docking hole 2a23 is a first threaded hole; the first tooth sleeve 2a3 is in the shape of a wound spring and is fixed in the first threaded hole. Please refer toFigure 11 As shown, in an embodiment of the present invention, a first blocking protrusion 2a24 protruding into the first terminal docking hole 2a23 is provided on the inner wall of the first extension portion 2a22. The first blocking protrusion 2a24 is integrally formed with the first extension portion 2a22. The first blocking protrusion 2a24 is configured to prevent the first dental brace 2a3 from disengaging downward from the first terminal docking hole 2a23 along the second direction A2-A2. In an embodiment of the present invention, the first dental brace 2a3 is made of stainless steel material. Of course, those skilled in the art can understand that in other embodiments of the present invention, the first dental brace 2a3 can also be made of other metal materials.

[0129] Please refer to Figure 7 and Figure 8 As shown, in the 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 an 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 an embodiment of the present invention, the second core 3a11 is made of aluminum material to reduce weight. The second core 3a11 is provided with a third surface 3a111 (for example, the upper surface), a fourth surface 3a112 (for example, the 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 the second direction A2-A2.

[0130] The second terminal mounting block 3a2 is at least partially fixed in the second mounting hole 3a110. In an embodiment of the present invention, the second terminal mounting block 3a2 is fixed to the second core body 3a11 by welding. In an embodiment of the present invention, the second terminal mounting block 3a2 is made of copper material to improve the welding quality. Of course, those skilled in the art can understand that in other embodiments of the present invention, the second terminal mounting block 3a2 can also be fixed to the second core body 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. At this time, the second mounting hole 3a110 serves as the second terminal docking hole 3a23 to contact the docking terminal. The second terminal mounting block 3a2 includes a second base 3a21 and a second extension portion 3a22 integrally extending from the second base 3a21 along the second direction A2-A2. In the illustrated embodiment of the present invention, both the second base 3a21 and the second extension portion 3a22 are cylindrical. The diameter of the second base 3a21 is greater than the diameter of the second extension portion 3a22. The second terminal mounting block 3a2 further includes a second terminal docking hole 3a23. In the illustrated embodiment of the present invention, the second terminal docking hole 3a23 penetrates through the second base 3a21 and the second extension portion 3a22 along the second direction A2-A2. The second terminal docking hole 3a23 is a second threaded hole to improve the docking reliability. The second extension portion 3a22 is provided with a second exposed surface 3a221 that is exposed downward into the second receiving cavity 7a32 along the second direction A2-A2.

[0131] Preferably, in order to further improve the docking reliability, in an embodiment of the present invention, the second cable assembly 3a further includes a second tooth sleeve 3a3 mounted in the second terminal docking hole 3a23. In the illustrated embodiment of the present invention, the second terminal docking hole 3a23 is a second threaded hole; the second tooth sleeve 3a3 is in the shape of a coiled spring and is fixed in the second threaded hole. In an embodiment of the present invention, a second blocking protrusion 3a24 that protrudes into the second terminal docking hole 3a23 is provided on the inner wall of the second extension portion 3a22. The second blocking protrusion 3a24 is integrally formed with the second extension portion 3a22. The second blocking protrusion 3a24 is configured to prevent the second tooth sleeve 3a3 from disengaging downward from the second terminal docking hole 3a23 along the second direction A2-A2. In an embodiment of the present invention, the second tooth sleeve 3a3 is made of stainless steel material. Of course, those skilled in the art can understand that in other embodiments of the present invention, the second tooth sleeve 3a3 can also be made of other metal materials.

[0132] During assembly, the first extension portion 2a22 is inserted into the first mounting hole 2a110 and exposed on the second surface 2a112 of the first core body 2a11. The first base portion 2a21 is located on the top of the first core body 2a11 and abuts against the first surface 2a111. In the illustrated embodiment of the present invention, the first base portion 2a21 protrudes upward from the first surface 2a111 along the second direction A2-A2. The first base portion 2a21 is provided with a first mating surface 2a211 that protrudes upward from the first surface 2a111. The first mating surface 2a211 is latched with the first latching surface 1a112 to fix the first cable assembly 2a in the first terminal receiving groove 1a15.

[0133] The second extension portion 3a22 is inserted into the second mounting hole 3a110 and exposed on the fourth surface 3a112 of the second core body 3a11. The second base portion 3a21 is located on the top of the second core body 3a11 and abuts against the third surface 3a111. In the illustrated embodiment of the present invention, the second base portion 3a21 protrudes upward from the third surface 3a111 along the second direction A2-A2. The second base portion 3a21 is provided with a second mating surface 3a211 that protrudes upward from the third surface 3a111. The second mating surface 3a211 is latched with the second latching surface 1a114 to fix the second cable assembly 3a in the second terminal receiving groove 1a16.

[0134] Please refer to Figures 15 to 23 As shown, in the second embodiment of the present invention, the first cable assembly 2a includes a first cable 2a1, a first terminal mounting block 2a2 fixed to the first cable 2a1, a first tooth sleeve 2a3 mounted on the first terminal mounting block 2a2, and a first clamping sleeve 2a4 that clamps the first cable 2a1.

[0135] The first cable 2a1 in the second embodiment of the present invention is the same as the first cable 2a1 in the first embodiment of the present invention. The first tooth sleeve 2a3 in the second embodiment of the present invention is the same as the first tooth sleeve 2a3 in the first embodiment of the present invention. The first terminal mounting block 2a2 in the second embodiment of the present invention is similar to the first terminal mounting block 2a2 in the first embodiment of the present invention, except that the first terminal mounting block 2a2 in the second embodiment of the present invention further has a first clamping portion 2a25 that protrudes from the first base portion 2a21. The first clamping portion 2a25 is generally cylindrical. The first clamping portion 2a25 and the first extension portion 2a22 are located on both sides of the first base portion 2a21. The first terminal docking hole 2a23 further penetrates through the first clamping portion 2a25.

[0136] Please refer to Figures 16 to 19As shown, in the illustrated embodiment of the present invention, the first clamping sleeve 2a4 is made of an insulating material (e.g., nylon material) and is generally U-shaped. It includes a first side wall portion 2a41, a second side wall portion 2a42, a first accommodation space 2a43 located between the first side wall portion 2a41 and the second side wall portion 2a42, and a first connecting wall 2a44 that connects the first side wall portion 2a41 and the second side wall portion 2a42 and is erected on the first accommodation space 2a43. 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. The first groove 2a411, the second groove 2a421, and the first accommodation space 2a43 together form a first slot for receiving the first cable 2a1. The first connecting wall 2a44 has a certain elastic deformation ability. The first clamping sleeve 2a4 includes a first clamping groove 2a45 at one end of the first connecting wall 2a44.

[0137] Similarly, please refer to Figures 15 to 23 As shown, in the second embodiment of the present invention, the second cable assembly 3a includes a second cable 3a1, a second terminal mounting block 3a2 fixed to the second cable 3a1, a second dental sleeve 3a3 mounted on the second terminal mounting block 3a2, and a second clamping sleeve 3a4 that is clamped with the second cable 3a1.

[0138] The second cable 3a1 in the second embodiment of the present invention is the same as the second cable 3a1 in the first embodiment of the present invention. The second dental sleeve 3a3 in the second embodiment of the present invention is the same as the second dental sleeve 3a3 in the first embodiment of the present invention. The second terminal mounting block 3a2 in the second embodiment of the present invention is similar to the second terminal mounting block 3a2 in the first embodiment of the present invention. The difference is that the second terminal mounting block 3a2 in the second embodiment of the present invention further has a second clamping portion 3a25 that protrudes from the second base portion 3a21. The second clamping portion 3a25 is generally cylindrical. The second clamping portion 3a25 and the second extension portion 3a22 are respectively located on both sides of the second base portion 3a21. The second terminal docking hole 3a23 further penetrates through the second clamping portion 3a25.

[0139] Please refer to Figures 16 to 19As shown, in the illustrated embodiment of the present invention, the second clamping sleeve 3a4 is made of an insulating material (e.g., nylon material) and is generally U-shaped. It includes a third side wall portion 3a41, a fourth side wall portion 2342, a second accommodation space 3a43 located between the third side wall portion 3a41 and the fourth side wall portion 2342, and a second connecting wall 3a44 connecting the third side wall portion 3a41 and the fourth side wall portion 2342 and spanning across the second accommodation space 3a43. The third side wall portion 3a41 is provided with a third groove 3a411, and the fourth side wall portion 2342 is provided with a fourth groove 3a421. The third groove 3a411, the fourth groove 3a421, and the second accommodation space 3a43 together form a second slot for receiving the second cable 3a1. The second connecting wall 3a44 has a certain elastic deformation ability. The second clamping sleeve 3a4 includes a second clamping groove 3a45 at one end of the second connecting wall 3a44.

[0140] During assembly, the first clamping portion 2a25 deforms the first connecting wall 2a44 by abutting against it so that it can pass through the first connecting wall 2a44 and be clamped in the first clamping groove 2a45. At this time, the first connecting wall 2a44 returns to its state before deformation to abut against the first clamping portion 2a25, thereby preventing the first clamping portion 2a25 from detaching from the first clamping sleeve 2a4. The first connecting wall 2a44 is provided with a first mating surface 2a211 that protrudes upward from the first surface 2a111. The first mating surface 2a211 is latched with the first locking surface 1a112 to fix the first cable assembly 2a in the first terminal receiving groove 1a15.

[0141] Similarly, the second clamping portion 3a25 deforms the second connecting wall 3a44 by abutting against it so that it can pass through the second connecting wall 3a44 and be clamped in the second clamping groove 3a45. At this time, the second connecting wall 3a44 returns to its state before deformation to abut against the second clamping portion 3a25, thereby preventing the second clamping portion 3a25 from detaching from the second clamping 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 is latched with the second locking surface 1a114 to fix the second cable assembly 3a in the second terminal receiving groove 1a16.

[0142] Those skilled in the art can understand that when the dimensions such as the width and thickness of the first cable 2a1 and the second cable 3a1 itself are small, it is beneficial to achieve assembly with the help of the first clamping sleeve 2a4 and the second clamping sleeve 3a4. In addition, by adjusting the first clamping sleeve 2a4 and the second clamping sleeve 3a4, the adaptability can be increased, and the influence of the first cable 2a1 and the second cable 3a1 themselves is reduced.

[0143] Please refer to Figure 7 and Figure 8As shown, the first sealing ring 4a includes a first socket part 4a1, a second socket part 4a2, a first extension piece 4a11 and a second extension piece 4a12 respectively extending along the first direction A1-A1 from the upper and lower edges of the first socket part 4a1, and a third extension piece 4a21 and a fourth extension piece 4a22 respectively extending along the first direction A1-A1 from the upper and lower edges of the second socket part 4a2.

[0144] In the illustrated embodiment of the present invention, the first socket part 4a1 and the second socket part 4a2 are arranged along the third direction A3-A3. The first socket part 4a1 and the second socket part 4a2 are integrally formed. The first socket part 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 part 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.

[0145] Please refer to Figure 7 As shown, the tail cover 5a includes a base part 5a1, a first frame part 5a2 integrally extending from the base part 5a1 along the first direction A1-A1, and a second frame part 5a3 integrally extending from the base part 5a1 along the first direction A1-A1. The first frame part 5a2 and the second frame part 5a3 are arranged at intervals along the third direction A3-A3. In the illustrated embodiment of the present invention, the first extension piece 4a11 extends beyond the first frame part 5a2 along the first direction A1-A1.

[0146] Specifically, please refer to Figure 11 and Figure 13As shown, the first extension piece 4a11 includes a first anti-retreat portion 4a111 that extends beyond the first frame portion 5a2 along the first direction A1-A1. The first anti-retreat portion 4a111 is located at the free end of the first extension piece 4a11 and is in a raised shape. With such a setting, on the one hand, it is beneficial to improve the reliability of holding the first extension piece 4a11 between the first frame portion 5a2 and the first cable 2a1, increases the damping, reduces the risk of the tail cover 5a becoming loose, and prevents relative wear between the shells during vibration; on the other hand, it is also beneficial to improve the sealing performance of the first extension piece 4a11. Similarly, the second extension piece 4a12 includes a second anti-retreat portion 4a121 that extends beyond the first frame portion 5a2 along the first direction A1-A1. The second anti-retreat portion 4a121 is located at the free end of the second extension piece 4a12 and is in a raised shape. With such a setting, on the one hand, it is beneficial to improve the reliability of holding the second extension piece 4a12 between the first frame portion 5a2 and the first cable 2a1, increases the damping, reduces the risk of the tail cover 5a becoming loose, and prevents relative wear between the shells during vibration; on the other hand, it is also beneficial to improve the sealing performance of the second extension piece 4a12. The third extension piece 4a21 includes a third anti-retreat portion 4a211 that extends beyond the second frame portion 5a3 along the first direction A1-A1. The third anti-retreat portion 4a211 is located at the free end of the third extension piece 4a21 and is in a raised shape. With such a setting, on the one hand, it is beneficial to improve the reliability of holding the third extension piece 4a21 between the second frame portion 5a3 and the second cable 3a1, increases the damping, reduces the risk of the tail cover 5a becoming loose, and prevents relative wear between the shells during vibration; on the other hand, it is also beneficial to improve the sealing performance of the third extension piece 4a21. Similarly, the fourth extension piece 4a22 includes a fourth anti-retreat portion 4a221 that extends beyond the second frame portion 5a3 along the first direction A1-A1. The fourth anti-retreat portion 4a221 is located at the free end of the fourth extension piece 4a22 and is in a raised shape. With such a setting, on the one hand, it is beneficial to improve the reliability of holding the fourth extension piece 4a22 between the second frame portion 5a3 and the second cable 3a1, increases the damping, reduces the risk of the tail cover 5a becoming loose, and prevents relative wear between the shells during vibration; on the other hand, it is also beneficial to improve the sealing performance of the fourth extension piece 4a22.

[0147] The base part 5a1 is provided with a plurality of positioning slots 5a11 and a plurality of locking tabs 5a12. The positioning slots 5a11 cooperate with the positioning ridges 1a23. Each locking tab 5a12 is provided with a locking hole 5a121 that penetrates the locking tab 5a12 along the second direction A2-A2. The locking hole 5a121 is locked with the locking lug 1a24. The first frame part 5a2 is provided with a first installation slot 5a20, a first inner wall surface 5a21 exposed in the first installation slot 5a20, and a second inner wall surface 5a22 exposed in the first installation slot 5a20 and opposite to the first inner wall surface 5a21. Similarly, the second frame part 5a3 is provided with a second installation slot 5a30, a third inner wall surface 5a31 exposed in the second installation slot 5a30, and a fourth inner wall surface 5a32 exposed in the second installation slot 5a30 and opposite to the third inner wall surface 5a31.

[0148] Please refer to Figure 5 and Figure 6 As shown, the second sealing ring 6a includes a first sealing part 6a1 located in the inner ring, a second sealing part 6a2 located in the outer ring, and a third sealing part 6a3 connecting the first sealing part 6a1 and the second sealing part 6a2. In the illustrated embodiment of the present invention, the first sealing part 6a1, the second sealing part 6a2, and the third sealing part 6a3 are in a stepped shape, and the first sealing part 6a1 is located below the second sealing part 6a2. In other words, the second sealing ring 6a includes an axial sealing part and a radial sealing part to reduce the risk of sealing failure. In the illustrated embodiment of the present invention, the axial sealing part includes the first sealing part 6a1 and the second sealing part 6a2, and the radial sealing part includes the third sealing part 6a3.

[0149] Please refer to Figure 5 and Figure 6 As shown, the clamping cover 7a includes a pressing plate part 7a1, a first sleeve part 7a2 extending upward from the pressing plate part 7a1 along the second direction A2-A2, and a second sleeve part 7a3 extending upward from the pressing plate part 7a1 along the second direction A2-A2. In the illustrated embodiment of the present invention, the pressing plate part 7a1, the first sleeve part 7a2, and the second sleeve part 7a3 are integrally formed. The first sleeve part 7a2 is generally cylindrical, and it is provided with 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 the first installation opening 1a171. The first surrounding wall 7a21 is provided with at least one first locking groove 7a211 penetrating the first surrounding wall 7a21. The first surrounding wall 7a21 is provided with 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 docking connector 200 to be inserted.

[0150] Similarly, the second sleeve portion 7a3 is generally cylindrical, and is provided with a second surrounding wall 7a31 and a second receiving cavity 7a32 surrounded by the second surrounding wall 7a31. The second surrounding wall 7a31 is received in the second mounting opening 1a172. The second surrounding wall 7a31 is provided with at least one second locking groove 7a311 penetrating through the second surrounding wall 7a31. The second surrounding wall 7a31 is provided with 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 docking connector 200. The first locking groove 7a211 is locked with the first latching protrusion 1a174, and the second locking groove 7a311 is locked with the second latching protrusion 1a176 to hold the latching cover 7a in the first housing 1a. Optionally, after the latching cover 7a is snapped in place, the first inclined surface 1a1741 of the first latching protrusion 1a174 and the second inclined surface 1a1761 of the second latching protrusion 1a176 respectively protrude into the first mounting opening 1a171 and the second mounting opening 1a172. At this time, the first latching protrusion 1a174 and the second latching protrusion 1a176 can also play a role in guiding the insertion of the docking connector 200.

[0151] When assembling the electrical connector 100, first, the first cable assembly 2a and the second cable assembly 3a are respectively assembled; then, the first core 2a11 and the second core 3a11 respectively pass through the first installation slot 5a20 and the second installation slot 5a30 of the end cap 5a; then, the first core 2a11 and the second core 3a11 respectively pass through the first through hole 4a10 and the second through hole 4a20 of the first sealing ring 4a. Then, the first cable assembly 2a and the second cable assembly 3a are respectively inserted into the first terminal receiving groove 1a15 and the second terminal receiving groove 1a16 from the installation channel 1a21. The first socket part 4a1 and the second socket part 4a2 of the first sealing ring 4a are respectively clamped and sealed inside the base part 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 part 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 part 5a3 and the second cable 3a1, on the one hand, further improving the sealing effect, and on the other hand, reducing the possible looseness of the end cap 5a. Then, the end cap 5a and the first installation part 1a2 of the first housing 1a are locked and fixed. Specifically, the end cap 5a and the first installation part 1a2 are provided with a locking convex block 1a24 and a locking hole 5a121 that are mutually locked. In the illustrated embodiment of the present invention, the locking convex block 1a24 is provided on the first installation part 1a2, and the locking hole 5a121 is provided on the end cap 5a. Of course, those skilled in the art can understand that the locking convex block 1a24 and the locking hole 5a121 can also be interchanged, that is, the locking convex block 1a24 is provided on the end cap 5a, and the locking hole 5a121 is provided on the first installation part 1a2.

[0152] 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 tapered surface 1a177;

[0153] Finally, the clamping cover 7a is installed and fixed on the first housing 1a, wherein the pressing plate part 7a1 abuts against the first sealing part 6a1 to achieve axial sealing.

[0154] Please refer to Figures 24 to 56As shown, the docking connector 200 includes a second housing 1b, a first terminal module 2b disposed at least partially in the second housing 1b, a second terminal module 3b disposed at least partially 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 latch 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.

[0155] Please refer to Figure 40 and Figure 41 As shown, in an embodiment of the present invention, the second housing 1b is made of an insulating material and includes a second main body portion 1b1, a second mounting portion 1b2, and a connecting portion 1b3 connecting the second main body portion 1b1 and the second mounting portion 1b2. In the illustrated embodiment of the present invention, the second main body portion 1b1 extends substantially in the horizontal direction, and the second mounting portion 1b2 extends substantially in the vertical direction. The connecting portion 1b3 includes a connecting plate 1b31 connecting the second main body portion 1b1 and the second mounting portion 1b2 along the first direction A1-A1, a plurality of first reinforcing ribs 1b32 connecting the second main body portion 1b1 and the second mounting portion 1b2 and spaced apart along the third direction A3-A3, and a plurality of second reinforcing ribs 1b33 connecting the second main body portion 1b1 and the second mounting portion 1b2 and spaced apart along the 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 the second direction A2-A2. The first reinforcing ribs 1b32 and the second reinforcing ribs 1b33 both extend obliquely along the first direction A1-A1, and the oblique directions are different. By providing the first reinforcing ribs 1b32 and the second reinforcing ribs 1b33, it is beneficial to increase the structural strength of the second housing 1b.

[0156] In the illustrated embodiment of the present invention, the second main body portion 1b1 includes a second substrate 1b11, a first protruding portion 1b12 protruding upward from the second substrate 1b11 along the second direction A2-A2, a first docking convex portion 1b13 protruding upward from the second substrate 1b11 along the second direction A2-A2, a second docking convex portion 1b14 protruding upward from the second substrate 1b11 along the second direction A2-A2, a second protruding portion 1b15 protruding downward from the second substrate 1b11 along the second direction A2-A2, a first mounting convex portion 1b16 protruding downward from the second substrate 1b11 along the second direction A2-A2, and a second mounting convex portion 1b17 protruding downward from the second substrate 1b11 along the second direction A2-A2.

[0157] In the illustrated embodiment of the present invention, the first protruding portion 1b12 is provided with a first receiving space 1b121 and a first mating conical surface 1b122 located on the inner side surface of the first protruding portion 1b12 and exposed in the first receiving space 1b121. In the illustrated embodiment of the present invention, the first mating conical surface 1b122 is configured to be adapted to the first conical surface 1a177 for easy docking.

[0158] In the illustrated embodiment of the present invention, the first docking protrusion 1b13 and the second docking protrusion 1b14 are arranged at intervals along the third direction A3-A3. The first protruding portion 1b12 is disposed around the periphery of the first docking protrusion 1b13 and the second docking protrusion 1b14. In other words, both the first docking protrusion 1b13 and the second docking protrusion 1b14 are located in the first receiving space 1b121. In the illustrated embodiment of the present invention, the first protruding portion 1b12, the first docking protrusion 1b13, and the second docking protrusion 1b14 are integrally formed. In addition, in the illustrated embodiment of the present invention, the second main body portion 1b1 further includes at least one first connecting block 1b18 connecting the first protruding portion 1b12 and the second substrate 1b11. The first connecting block 1b18 is provided with a first guiding surface 1b181 that is inclined. In the illustrated embodiment of the present invention, there are a plurality of first connecting blocks 1b18 which are arranged at intervals along the circumferential direction of the first protruding portion 1b12. The first guiding surfaces 1b181 together form a guiding conical surface 1b180 to be adapted to the second conical surface 1a311 of the first conical portion 1a31 of the electrical connector 100, so as to play a role of automatic alignment, which is beneficial to realizing the blind mating of the electrical connector 100 and the docking connector 200, and is beneficial to improving the uniformity of stress distribution. At the same time, the first connecting block 1b18 can also increase the structural strength of the second housing 1b.

[0159] The first docking convex part 1b13 is provided with a first docking conical part 1b131 at its top, a first docking cylindrical part 1b132 at its bottom, and a first assembly hole 1b133 that penetrates through the first docking conical part 1b131 and the first docking cylindrical part 1b132 along the second direction A2 - A2. The first docking conical part 1b131 is provided with a first docking conical surface 1b1311 on its outer side. The first docking conical surface 1b1311 is configured to cooperate with the first sleeve part 7a2 of the electrical connector 100, which is beneficial to automatically align and insert the first docking convex part 1b13 into the first sleeve part 7a2. In the illustrated embodiment of the present invention, 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 that is connected to the first cylindrical hole 1b1331 and is located at the upper part. In the illustrated embodiment of the present invention, 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 through the first docking cylindrical part 1b132 along the second direction A2 - A2. The second cylindrical hole 1b1332 penetrates upward through the first docking conical part 1b131 along the second direction A2 - A2. The first docking convex part 1b13 is provided with a first stepped surface 1b1333 at the junction of the first cylindrical hole 1b1331 and the second cylindrical hole 1b1332.

[0160] Similarly, the second docking convex part 1b14 is provided with a second docking conical part 1b141 at its top, a second docking cylindrical part 1b142 at its bottom, and a second assembly hole 1b143 that penetrates through the second docking conical part 1b141 and the second docking cylindrical part 1b142 along the second direction A2 - A2. The second docking conical part 1b141 is provided with a second docking conical surface 1b1411 on its outer side. The second docking conical surface 1b1411 is configured to cooperate with the second sleeve part 7a3 of the electrical connector 100, which is beneficial to automatically align and insert the second docking convex part 1b14 into the second sleeve part 7a3. In the illustrated embodiment of the present invention, 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 that is connected to the third cylindrical hole 1b1431 and is located at the upper part. In the illustrated embodiment of the present invention, 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 through the second docking cylindrical part 1b142 along the second direction A2 - A2. The fourth cylindrical hole 1b1432 penetrates upward through the second docking conical part 1b141 along the second direction A2 - A2. The second docking convex part 1b14 is provided with a second stepped surface 1b1433 at the junction of the third cylindrical hole 1b1431 and the fourth cylindrical hole 1b1432.

[0161] In the illustrated embodiment of the present invention, the second main body portion 1b1 is further provided with a plurality of second connecting blocks 1b19 connecting the second protruding portion 1b15 and the second substrate 1b11. In the illustrated embodiment of the present invention, the second connecting blocks 1b19 are arranged at intervals along the circumferential direction of the second protruding portion 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 guiding surface 1b191. The second guiding surface 1b191 is conducive to reflecting foreign objects that may collide with the bottom of the second main body portion 1b1, thereby reducing the risk of damage to the second main body portion 1b1 and improving reliability.

[0162] In the illustrated embodiment of the present invention, the second main body portion 1b1 is further provided with a plurality of first connecting rib strips 1b151 connecting the second protruding portion 1b15 and the first mounting convex portion 1b16 and a plurality of second connecting rib strips 1b152 connecting the second protruding portion 1b15 and the second mounting convex portion 1b17. In the illustrated embodiment of the present invention, the plurality of first connecting rib strips 1b151 are radially arranged and connected to the second substrate 1b11. The plurality of second connecting rib strips 1b152 are radially arranged and connected to the second substrate 1b11.

[0163] In addition, in the illustrated embodiment of the present invention, the second protruding portion 1b15 is further provided with a first side wall 1b153, a second side wall 1b154, a receiving groove 1b155 located between the first side wall 1b153 and the second side wall 1b154 along the third direction A3 - A3, and a receiving space 1b156 located in front of the receiving groove 1b155 along the first direction A1 - A1. Both the first side wall 1b153 and the second side wall 1b154 extend along the first direction A1 - A1. The first side wall 1b153 and the second side wall 1b154 are arranged at intervals along the third direction A3 - A3. The first side wall 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 side wall 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 are exposed forward in the receiving space 1b156. The first mounting convex portion 1b16 and the second mounting convex portion 1b17 are respectively located on both sides of the receiving space 1b156 along the third direction A3 - A3.

[0164] In the illustrated embodiment of the present invention, the first mounting convex portion 1b16 is cylindrical, and includes a first mounting space 1b161, a first edge portion 1b162 located at the bottom edge of the first mounting convex portion 1b16, and a plurality of first locking convex bumps 1b163 protruding inwardly into the first mounting space 1b161. The first edge portion 1b162 includes a first inclined guiding surface 1b1621 located on the outer side surface of the first edge portion 1b162 and a second inclined guiding surface 1b1622 located on the inner side surface of the first edge portion 1b162.

[0165] In the illustrated embodiment of the present invention, the first mounting convex portion 1b17 is cylindrical, and includes a second mounting space 1b171, a second edge portion 1b172 located at the bottom edge of the first mounting convex portion 1b17, and a plurality of second locking convex bumps 1b173 protruding inwardly into the second mounting space 1b171. The second edge portion 1b172 includes a third inclined guiding surface 1b1721 located on the outer side surface of the second edge portion 1b172 and a fourth inclined guiding surface 1b1722 located on the inner side surface of the second edge portion 1b172.

[0166] The second mounting portion 1b2 includes a mounting wall 1b21, a first mounting frame portion 1b22 protruding forward along the first direction A1 - A1 from the mounting wall 1b21, a second mounting frame portion 1b23 protruding forward along the first direction A1 - A1 from the mounting wall 1b21, a first mounting protrusion portion 1b24 protruding forward along the first direction A1 - A1 from the mounting wall 1b21, and a second mounting protrusion portion 1b25 protruding backward along the first direction A1 - A1 from the mounting wall 1b21. In an embodiment of the present invention, the first mounting frame portion 1b22, the second mounting frame portion 1b23, the first mounting protrusion portion 1b24, and the second mounting protrusion portion 1b25 are integrally formed with the mounting wall 1b21. The third sealing ring 8b is installed on the mounting wall 1b21 and surrounds the outer peripheries of the first mounting frame portion 1b22, the second mounting frame portion 1b23, and the first mounting protrusion portion 1b24.

[0167] Please refer to Figure 31 As shown, in the illustrated embodiment of the present invention, the docking connector 200 further includes a plurality of screw fixing sleeves 9b fixed to the mounting wall 1b21. In the illustrated embodiment of the present invention, the plurality of screw fixing sleeves 9b are four and are embedded and fixed at the four corners of the mounting wall 1b21. Preferably, the screw fixing sleeves 9b are made of a metal material to improve the structural strength.

[0168] The first mounting frame portion 1b22 is provided with a first mounting cavity 1b221 and a first annular inner wall surface 1b222 exposed in the first mounting cavity 1b221.

[0169] The second mounting frame part 1b23 is provided with a second mounting cavity 1b231 and a second annular inner wall surface 1b232 exposed in the second mounting cavity 1b231.

[0170] The first mounting protrusion part 1b24 is provided with a first annular wall part 1b241 and a first assembly space 1b242 surrounded by the first annular wall part 1b241. In the illustrated embodiment of the present invention, the first annular wall part 1b241 is integrally connected to both the first mounting frame part 1b22 and the second mounting frame part 1b23. The first annular wall part 1b241 is further provided with at least one locking hole 1b243 communicating with the first assembly space 1b242. Please refer to Figure 61 As shown, on the inner wall of the first annular wall part 1b241, there are provided a guiding conical surface 1b2411 and a limiting wall surface 1b2412 exposed in the first assembly space 1b242.

[0171] Please refer to Figure 28 As shown, in the illustrated embodiment of the present invention, the second mounting protrusion part 1b25 includes a second annular wall part 1b251, and the first assembly space 1b242 further extends along the first direction A1 - A1 and penetrates through the second mounting protrusion part 1b25. In the illustrated embodiment of the present invention, the second mounting protrusion part 1b25 further includes a protrusion 1b252 protruding from the second annular wall part 1b251 along the second direction A2 - A2.

[0172] Please refer to Figures 42 to 45 As shown, the first terminal module 2b includes a first docking terminal 2b1, a first elastic washer 2b2, a first flat washer 2b3, a first adapter sleeve 2b4 installed in the first docking protrusion 1b13, a first clamping sleeve 2b5 installed and fixed in the first installation space 1b161 of the first mounting protrusion 1b16, a first docking sealing ring 2b6 cooperating with the first clamping sleeve 2b5, a second docking sealing ring 2b7 cooperating with the first mounting protrusion 1b16, and a first rotating cover 2b8 cooperating with the first docking terminal 2b1. The first clamping sleeve 2b5 abuts against the first locking convex protrusion 1b163 to prevent the first clamping sleeve 2b5 from detaching from the first installation space 1b161.

[0173] In the illustrated embodiment of the present invention, the first docking terminal 2b1 includes a first abutting portion 2b11, a first assembling portion 2b12 connected to the first abutting portion 2b11 upward along the second direction A2-A2, a first docking portion 2b13 protruding upward from the first assembling portion 2b12 along the second direction A2-A2 and connected to the first assembling portion 2b12, and a first stress portion 2b14 protruding downward from the first abutting portion 2b11 along the second direction A2-A2. In the illustrated embodiment of the present invention, the first docking portion 2b13 is provided with a first docking thread 2b131. The first docking thread 2b131 is engaged with the first terminal docking hole 2a23. In an embodiment of the present invention, the first docking thread 2b131 is in threaded engagement with the first terminal docking hole 2a23. When a first dental sleeve 2a3 is provided in the first terminal docking hole 2a23, the first docking thread 2b131 is in threaded engagement with the first dental sleeve 2a3 to improve the contact reliability. In the illustrated embodiment of the present invention, the first stress portion 2b14 is a hexagonal nut, and a first fitting hole 2b15 penetrating the first stress portion 2b14 along the second direction A2-A2 is provided at the bottom of the first stress portion 2b14. In the illustrated embodiment of the present invention, the first fitting hole 2b15 is a plum blossom hole to have a specific shape. In an embodiment of the present invention, the first docking terminal 2b1 is made of stainless steel material.

[0174] The first elastic washer 2b2 is sleeved on the first assembling portion 2b12. In the illustrated embodiment of the present invention, the first elastic washer 2b2 is provided with a first slot 2b21 to facilitate adjusting the thickness of the first elastic washer 2b2 in the second direction A2-A2. In an embodiment of the present invention, the first elastic washer 2b2 is made of a metal material. 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 acting force to the first docking terminal 2b1. When the first elastic washer 2b2 is pressed in place by the first abutting portion 2b11, the first elastic washer 2b2 is substantially flat.

[0175] The first flat washer 2b3 is sleeved on the first assembling portion 2b12. The first flat washer 2b3 is located above the first elastic washer 2b2 along the second direction A2-A2 and abuts against the first elastic washer 2b2. In an embodiment of the present invention, the first flat washer 2b3 is made of a metal material. The first flat washer 2b3 is always flat.

[0176] Please combine Figure 42 and Figure 43As shown, the first rotary cover 2b8 is made of an insulating material (e.g., nylon material), 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 bump 2b84 protruding upward from the first cover body 2b81, a first annular accommodating 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 bump 2b84.

[0177] In the illustrated embodiment of the present invention, the first annular outer wall portion 2b82, the first annular inner wall portion 2b83, and the first force - applying bump 2b84 are 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 card slot 2b821.

[0178] In the illustrated embodiment of the present invention, 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 protrudes upward from the first force - applying bump 2b84 along the second direction A2 - A2. The first annular inner wall portion 2b83 is provided with a first locking slot 2b831. The first force - applying bump 2b84 is fixed in the first fitting hole 2b15. In the illustrated embodiment of the present invention, the first force - applying bump 2b84 has an outer side surface in the shape of a plum - blossom to be adapted to the shape of the first fitting hole 2b15.

[0179] The first rotary cover 2b8 is buckled on the first buckling sleeve 2b5 and / or the first mounting convex portion 1b16 to prevent the first rotary cover 2b8 from falling off. In the illustrated embodiment of the present invention, the first buckling sleeve 2b5 is provided with a first top wall 2b51 and a first annular wall 2b52 integrally extending downward along the second direction A2 - A2 from the periphery of the first top wall 2b51. The first top wall 2b51 is provided with a first opening 2b511, and at least a part of the first elastic washer 2b2 is located in the first opening 2b511. The first annular wall 2b52 is provided with a first internal space 2b521 and at least one first locking convex block 2b522 protruding inward into the first internal space 2b521. The first locking convex block 2b522 is locked with the first locking slot 2b831 to prevent the first rotary cover 2b8 from detaching downward from the first buckling sleeve 2b5 along the second direction A2 - A2.

[0180] In addition, in the illustrated embodiment of the present invention, the first cover body 2b81 of the first rotary cover 2b8 further includes a first stepped surface 2b87 exposed in the first annular accommodating groove 2b85 (as Figure 50As shown. In the illustrated embodiment of the present invention, the first stepped surface 2b87 includes a first bottom end surface 2b871, a second bottom end surface 2b872 lower than the first bottom end surface 2b871, and a first connecting surface 2b873 connecting the first bottom end surface 2b871 and the second bottom end surface 2b872.

[0181] Please refer to Figure 50 As shown, the first docking sealing ring 2b6 is sleeved on the first annular inner wall portion 2b83 and is located at the bottom of the first annular inner wall portion 2b83. The bottom surface of the first docking sealing ring 2b6 abuts against the first bottom end surface 2b871. The cross-sectional shape of the first docking sealing ring 2b6 can be star-shaped or other shapes. In the description of the present invention, the cross-sectional shape of the first docking sealing ring 2b6 being star-shaped means that the cross-section of the first docking sealing ring 2b6 includes a first base portion 2b61 and a plurality of first abutting protrusions 2b62 that extend integrally with the first base portion 2b61 and protrude from the first base portion 2b61. The plurality of first abutting protrusions 2b62 are circumferentially distributed along the first base portion 2b61. In an embodiment of the present invention, the first base portion 2b61 is generally rectangular, and the plurality of first abutting protrusions 2b62 are evenly circumferentially distributed along the first base portion 2b61. The first abutting protrusions 2b62 are configured to abut against the corresponding wall surface to achieve sealing. In the illustrated embodiment of the present invention, the number of the plurality of first abutting protrusions 2b62 is four. Of course, those skilled in the art can understand that the number of the plurality of first abutting protrusions 2b62 can be flexibly adjusted as needed. In an embodiment of the present invention, the first docking sealing ring 2b6 is made of silicone rubber.

[0182] The second docking sealing ring 2b7 is sleeved on the first connection surface 2b873 and located at the bottom of the first annular accommodation groove 2b85, and the bottom surface of the second docking sealing ring 2b7 abuts against the second bottom end surface 2b872. The cross-sectional shape of the second docking sealing ring 2b7 can be star-shaped, rectangular or other shapes. In the description of the present invention, the cross-sectional shape of the second docking sealing ring 2b7 being star-shaped means that the cross-section of the second docking sealing ring 2b7 includes a second base portion 2b71 and a plurality of second abutting protrusions 2b72 that extend integrally with the second base portion 2b71 and protrude from the second base portion 2b71, and the plurality of second abutting protrusions 2b72 are circumferentially distributed along the second base portion 2b71. In an embodiment of the present invention, 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 surfaces to achieve sealing. In the illustrated embodiment of the present invention, the number of the plurality of second abutting protrusions 2b72 is four. Of course, those skilled in the art can understand that the number of the plurality of second abutting protrusions 2b72 can be flexibly adjusted as needed. In an embodiment of the present invention, the second docking sealing ring 2b7 is made of silicone rubber. In an embodiment of the present invention, the second docking sealing ring 2b7 is a regular ring. In another embodiment of the present invention, the second docking sealing ring 2b7 is an irregular ring, and the second docking sealing ring 2b7 is provided with a plurality of protruding portions (not shown) protruding laterally outward, and the plurality of protruding portions are evenly distributed circumferentially on the second docking sealing ring 2b7.

[0183] Please refer to Figure 44 and Figure 45 As shown, the first adapter sleeve 2b4 is received in the first assembly hole 1b133. In an embodiment of the present invention, the first adapter sleeve 2b4 is made of a metal material (for example, 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 installation through hole 2b44 that penetrates the first cylindrical portion 2b41 and the second cylindrical portion 2b42 along the second direction A2-A2. In the illustrated embodiment of the present invention, the diameter of the first cylindrical portion 2b41 is greater 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 illustrated embodiment of the present invention, the second cylindrical portion 2b42 is provided with a third exposed surface 2b421 that is exposed from the first docking convex portion 1b13. The third exposed surface 2b421 contacts the first exposed surface 2a221 to improve the protection performance.

[0184] The second terminal module 3b includes a second docking terminal 3b1, a second elastic washer 3b2, a second flat washer 3b3, a second adapter sleeve 3b4 installed in the second docking convex portion 1b14, a second clamping sleeve 3b5 installed and fixed in the second installation space 1b171 of the second installation convex portion 1b17, a third docking sealing ring 3b6 cooperating with the second clamping sleeve 3b5, a fourth docking sealing ring 3b7 cooperating with the second installation convex portion 1b17, and a second rotary cover 3b8 cooperating with the second docking terminal 3b1. The second clamping sleeve 3b5 abuts against the second locking convex bump 1b173 to prevent the second clamping sleeve 3b5 from detaching from the second installation space 1b171. In an embodiment of the present invention, both the third docking sealing ring 3b6 and the fourth docking sealing ring 3b7 are made of silicone rubber material.

[0185] In the illustrated embodiment of the present invention, the second docking terminal 3b1 includes a second abutting portion 3b11, a second assembling portion 3b12 connected to the second abutting portion 3b11 upward along the second direction A2-A2, a second docking portion 3b13 protruding upward from the second assembling portion 3b12 along the second direction A2-A2 and connected to the second assembling portion 3b12, and a second stress portion 3b14 protruding downward from the second abutting portion 3b11 along the second direction A2-A2. In the illustrated embodiment of the present invention, the second docking portion 3b13 is provided with a second docking thread 3b131. The second docking thread 3b131 cooperates with the second terminal docking hole 3a23. In an embodiment of the present invention, the second docking thread 3b131 is in threaded fit with the second terminal docking hole 3a23. When a second tooth sleeve 3a3 is provided in the second terminal docking hole 3a23, the second docking thread 3b131 is in threaded fit with the second tooth sleeve 3a3 to improve the contact reliability. In the illustrated embodiment of the present invention, the second stress portion 3b14 is a hexagonal nut, and a second cooperation hole 3b15 penetrating the second stress portion 3b14 along the second direction A2-A2 is provided at the bottom of the second stress portion 3b14. In the illustrated embodiment of the present invention, the second cooperation hole 3b15 is a plum blossom hole to have a specific shape. In an embodiment of the present invention, the second docking terminal 3b1 is made of stainless steel material.

[0186] The second elastic washer 3b2 is sleeved on the second assembling portion 3b12. In the illustrated embodiment of the present invention, the second elastic washer 3b2 is provided with a second slot 3b21 to facilitate adjusting the thickness of the second elastic washer 3b2 in the second direction A2-A2. In an embodiment of the present invention, the second elastic washer 3b2 is made of metal material. When the second elastic washer 3b2 is not pressed by the second abutting portion 3b11, the second elastic washer 3b2 is warped to apply a certain acting force to the second docking terminal 3b1. When the second elastic washer 3b2 is pressed in place by the second abutting portion 3b11, the second elastic washer 3b2 is substantially flat.

[0187] The second flat washer 3b3 is sleeved on the second fitting part 3b12. The second flat washer 3b3 is located above the second elastic washer 3b2 along the second direction A2-A2 and abuts against the second elastic washer 3b2. In an embodiment of the present invention, the second flat washer 3b3 is made of a metallic material. The second flat washer 3b3 is always in a flat plate shape.

[0188] The second rotary cover 3b8 is made of an insulating material (for example, nylon material), 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 convex block 3b84 protruding upward from the second cover body 3b81, a second annular accommodating 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 convex block 3b84.

[0189] In the illustrated embodiment of the present invention, the second annular outer wall portion 3b82, the second annular inner wall portion 3b83, and the second force-applying convex block 3b84 are 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 clamping groove 3b821.

[0190] In the illustrated embodiment of the present invention, 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 protrudes upward from the second force-applying convex block 3b84 along the second direction A2-A2. The second annular inner wall portion 3b83 is provided with a second clamping slot 3b831. The second force-applying convex block 3b84 is fixed in the second fitting hole 3b15. In the illustrated embodiment of the present invention, the second force-applying convex block 3b84 has an outer side surface in a plum blossom shape to be adapted to the shape of the second fitting hole 3b15.

[0191] The second rotary cover 3b8 is latched to the second latching sleeve 3b5 and / or the second mounting protrusion 1b17 to prevent the second rotary cover 3b8 from falling off. In the illustrated embodiment of the present invention, the second latching sleeve 3b5 is provided with 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 is provided with 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 is provided with a second internal space 3b521 and at least one second latching protrusion 3b522 protruding inward into the second internal space 3b521. The second latching protrusion 3b522 is latched with the second latching groove 3b831 to prevent the second rotary cover 3b8 from disengaging downward from the second latching sleeve 3b5 along the second direction A2-A2.

[0192] In addition, in the illustrated embodiment of the present invention, the second cover body 3b81 of the second rotary cover 3b8 further includes a second stepped surface 3b87 exposed in the second annular accommodation groove 3b85. In the illustrated embodiment of the present invention, 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.

[0193] The third docking sealing ring 3b6 is sleeved on the second annular inner wall portion 3b83 and is located at the bottom of the second annular inner wall portion 3b83. The bottom surface of the third docking sealing ring 3b6 abuts against the third bottom end surface 3b871. The cross-sectional shape of the third docking sealing ring 3b6 can be star-shaped or other shapes. In the description of the present invention, the cross-sectional shape of the third docking sealing ring 3b6 being star-shaped means that the cross-section of the third docking sealing ring 3b6 includes a third base portion 3b61 and a plurality of third abutting protrusions 3b62 integrally extending from the third base portion 3b61 and protruding from the third base portion 3b61. The plurality of third abutting protrusions 3b62 are circumferentially distributed along the third base portion 3b61. In an embodiment of the present invention, the third base portion 3b61 is generally rectangular, and the plurality of third abutting protrusions 3b62 are evenly circumferentially distributed along the third base portion 3b61. The third abutting protrusions 3b62 are configured to abut against the corresponding wall surfaces to achieve sealing. In the illustrated embodiment of the present invention, the number of the plurality of third abutting protrusions 3b62 is four. Of course, those skilled in the art can understand that the number of the plurality of third abutting protrusions 3b62 can be flexibly adjusted as needed.

[0194] The fourth docking sealing ring 3b7 is sleeved on the second connection surface 3b873 and located at the bottom of the second annular accommodation groove 3b85. The bottom surface of the fourth docking sealing ring 3b7 abuts against the fourth bottom end surface 3b872. The cross-sectional shape of the fourth docking sealing ring 3b7 can be star-shaped, rectangular or other shapes. In the description of the present invention, the cross-sectional shape of the fourth docking sealing ring 3b7 being star-shaped means that the cross-section of the fourth docking sealing ring 3b7 includes a fourth base portion 3b71 and a plurality of fourth abutting protrusions 3b72 that extend integrally with the fourth base portion 3b71 and protrude from the fourth base portion 3b71. The plurality of fourth abutting protrusions 3b72 are circumferentially distributed along the fourth base portion 3b71. In an embodiment of the present invention, the fourth base portion 3b71 is generally rectangular, and the plurality of fourth abutting protrusions 3b72 are evenly circumferentially distributed along the fourth base portion 3b71. The fourth abutting protrusions 3b72 are configured to abut against the corresponding wall surfaces to achieve sealing. In the illustrated embodiment of the present invention, the number of the plurality of fourth abutting protrusions 3b72 is four. Of course, those skilled in the art can understand that the number of the plurality of fourth abutting protrusions 3b72 can be flexibly adjusted as needed. In an embodiment of the present invention, the fourth docking sealing ring 3b7 is a regular ring. In another embodiment of the present invention, the fourth docking sealing ring 3b7 is an irregular ring, and the fourth docking sealing ring 3b7 is provided with a plurality of protruding portions (not shown) protruding laterally outward, and the plurality of protruding portions are evenly circumferentially distributed on the fourth docking sealing ring 3b7.

[0195] The second adapter sleeve 3b4 is received in the second assembly hole 1b143. In an embodiment of the present invention, the second adapter sleeve 3b4 is made of a metal material (for example, 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 installation through hole 3b44 that penetrates the third cylindrical portion 3b41 and the fourth cylindrical portion 3b42 along the second direction A2-A2. In the illustrated embodiment of the present invention, the diameter of the third cylindrical portion 3b41 is greater 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 step surface 1b1433. In the illustrated embodiment of the present invention, the fourth cylindrical portion 3b42 is provided with a fourth exposed surface 3b421 exposed from the second docking convex portion 1b14. The fourth exposed surface 3b421 contacts the second exposed surface 3a221 to improve the protection performance.

[0196] Please combine Figures 41 to 45As shown, the first connecting conductive terminal module 4b includes a first connecting conductive terminal 4b1, a first insulating sleeve 4b2 sleeved on the first connecting conductive terminal 4b1, a first sealing sleeve 4b3 sleeved on the first insulating sleeve 4b2, and a first riveting nut 4b4 fixed to the first connecting conductive terminal 4b1. The first sealing sleeve 4b3 is received in the first installation cavity 1b221 of the first installation frame portion 1b22, and the first sealing sleeve 4b3 abuts against the first annular inner wall surface 1b222 to achieve sealing. The first riveting nut 4b4 is configured to be electrically connected (e.g., welded) to a circuit board (not shown).

[0197] The first connecting 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 is provided with a first through hole 4b110 penetrating the first end portion 4b11 along the second direction A2-A2. The first insulating sleeve 4b2 is sleeved on the first intermediate portion 4b13. In an embodiment of the present invention, the first connecting conductive terminal 4b1 is flat and made of copper material.

[0198] Similarly, the second connecting conductive terminal module 5b includes a second connecting conductive terminal 5b1, a second insulating sleeve 5b2 sleeved on the second connecting conductive terminal 5b1, a second sealing sleeve 5b3 sleeved on the second insulating sleeve 5b2, and a second riveting nut 5b4 fixed to the second connecting conductive terminal 5b1. The second sealing sleeve 5b3 is received in the second installation cavity 1b231 of the second installation frame portion 1b23, and the second sealing sleeve 5b3 abuts against the second annular inner wall surface 1b232 to achieve sealing. The second riveting nut 5b4 is configured to be electrically connected (e.g., welded) to a circuit board.

[0199] The second connecting 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 is provided with a second through hole 5b110 penetrating the second end portion 5b11 along the second direction A2-A2. The second insulating sleeve 5b2 is sleeved on the second intermediate portion 5b13. In an embodiment of the present invention, the second connecting conductive terminal 5b1 is flat and made of copper material.

[0200] In an assembly method of the present invention, the first adapter sleeve 2b4 is installed in the first docking convex portion 1b13; then, the first connecting conductive terminal module 4b is inserted into the second housing 1b from the first mounting frame portion 1b22; then, the first clamping sleeve 2b5 is fixed in the first mounting space 1b161 of the first mounting convex portion 1b16; then, the first elastic washer 2b2 and the first flat washer 2b3 are sequentially sleeved on the first assembling portion 2b12; then, the first docking terminal 2b1 is installed in the second housing 1b, and the first docking portion 2b13 sequentially passes 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 the first docking portion 2b13 passes out of the first mounting through hole 2b44; then, the first docking sealing ring 2b6 is sleeved on the first annular inner wall portion 2b83, and the second docking sealing ring 2b7 is sleeved on the first connecting surface 2b873; then, the first rotating cover 2b8 is buckled to the first docking convex portion 1b13. At this time, the first force-applying bump 2b84 is inserted into the first fitting hole 2b15. In the illustrated embodiment of the present invention, the first rotating cover 2b8 can move up and down relative to the first docking convex portion 1b13 along the second direction A2-A2.

[0201] During use, the first rotating cover 2b8 is rotated by an external tool. For example, by inserting the external tool into the first plum blossom groove 2b810 of the first rotating cover 2b8 and applying force to rotate the first rotating cover 2b8; when the first rotating cover 2b8 rotates, it drives the first docking terminal 2b1 to further screw into the first terminal docking hole 2a23. At this time, the distance between the first rotating cover 2b8 and the first docking convex portion 1b13 along the second direction A2-A2 is shortened. The first docking sealing ring 2b6 is axially sealed between the first clamping sleeve 2b5 and the first bottom end surface 2b871, and the first docking sealing ring 2b6 is radially sealed between the first annular inner wall portion 2b83 and the inner wall surface of the first mounting convex portion 1b16. The second docking sealing ring 2b7 is axially sealed between the second bottom end surface 2b872 and the first edge portion 1b162 of the first mounting convex portion 1b16. In the illustrated embodiment of the present invention, at least a part of the first docking portion 2b13 extends into the first recessed space 1a131 of the first raised portion 1a13.

[0202] The assembly methods of the second terminal module 3b and the second connecting conductive terminal module 5b of the docking connector 200 are the same as those of the first terminal module 2b and the first connecting conductive terminal module 4b respectively, and the present invention will not elaborate on this.

[0203] Please refer to Figures 24 to 30 As shown, the locking device 6b includes a slider 6b1, a first terminal 6b2 provided in the slider 6b1, and a first sealing ring 6b3 sleeved on the slider 6b1.

[0204] In the illustrated embodiment of the present invention, the slider 6b1 is made of an insulating material and includes a first body portion 6b11, a base 6b12 protruding upward from the first body portion 6b11 along the second direction A2 - A2, at least one limiting protrusion 6b13 protruding outward from the base 6b12, a first tab 6b14 protruding from the first body portion 6b11 to one side, a second tab 6b15 protruding from the first body portion 6b11 to the other side, an extension block 6b16 protruding downward from the first body portion 6b11 along the second direction A2 - A2, an unlocking portion 6b17 protruding along the first direction A1 - A1 from the first body portion 6b11, a spring arm 6b18 connected to the unlocking portion 6b17 along the first direction A1 - A1, and a first insertion portion 6b19 integrally extending 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.

[0205] In the illustrated embodiment of the present invention, the first tab 6b14 is provided with an inclined first clamping surface 6b141. The second tab 6b15 is provided with an inclined second clamping surface 6b151. In the illustrated embodiment of the present invention, the inclined directions of the first clamping surface 6b141 and the second clamping surface 6b151 are different. The first clamping surface 6b141 and the second clamping surface 6b151 form an acute - angled included angle. When the first rotating cover 2b8 and the second rotating cover 3b8 are at an appropriate height, the first tab 6b14 is engaged with the first slot 2b821 of the first rotating cover 2b8, and the second tab 6b15 is engaged with the second slot 3b821 of the second rotating cover 3b8 (as Figure 28 shown).

[0206] The extension block 6b16 is provided with a first arc - shaped notch 6b161 and a second arc - shaped notch 6b162 on both sides thereof respectively. The first arc - shaped notch 6b161 is adapted to the arc - shaped side edge of the first rotating cover 2b8, and the second arc - shaped notch 6b162 is adapted to the arc - shaped side edge of the second rotating cover 3b8. When the first rotating cover 2b8 is not fully rotated into place, the first rotating cover 2b8 is at least partially located in the first arc - shaped notch 6b161. At this time, the first rotating cover 2b8 can block the extension block 6b16, so that the slider 6b1 cannot move along the first direction A1 - A1 to make the spring arm 6b18 reach the locking position, playing a certain anti - misoperation role. Correspondingly, when the second rotating cover 3b8 is not fully rotated into place, the second rotating cover 3b8 is at least partially located in the second arc - shaped notch 6b162. At this time, the second rotating cover 3b8 can block the extension block 6b16, so that the slider 6b1 cannot move along the first direction A1 - A1 to make the spring arm 6b18 reach the locking position, playing a certain anti - misoperation role and improving safety.

[0207] Please refer to Figure 24As shown, those skilled in the art can understand that when the first rotary cover 2b8 and / or the second rotary cover 3b8 are not rotated into place, the first rotary cover 2b8 and / or the second rotary cover 3b8 can block the extension block 6b16. Therefore, the slider 6b1 cannot be pushed along the first direction A1-A1. Those skilled in the art can understand that when the first rotary cover 2b8 and the second rotary cover 3b8 are not rotated into place, this means that the first docking terminal 2b1 and the second docking terminal 3b1 are not fully inserted into place, and there may be a problem of poor contact. At this time, since the slider 6b1 cannot be pushed along the first direction A1-A1, the problem of this poor contact being misrecognized as reliable contact is reduced.

[0208] Please refer to Figure 25 As shown, those skilled in the art can understand that when the first rotary cover 2b8 is rotated into place, the first rotary cover 2b8 completely disengages from the first arc-shaped notch 6b161 along the second direction A2-A2; when the second rotary cover 3b8 is rotated into place, the second rotary cover 3b8 completely disengages from the second arc-shaped notch 6b162 along the second direction A2-A2. At this time, the first rotary cover 2b8 and the second rotary cover 3b8 no longer block the extension block 6b16. Therefore, the slider 6b1 can be pushed along the first direction A1-A1, so that the elastic arm 6b18 reaches the locking position. At the same time, the first tab 6b14 is engaged with the first card slot 2b821 of the first rotary cover 2b8, and the second tab 6b15 is engaged with the second card slot 3b821 of the second rotary cover 3b8 to prevent the first rotary cover 2b8 and the second rotary cover 3b8 from falling off.

[0209] The base 6b12 is inserted into the first installation guide groove 1b1531, the accommodation groove 1b155, and the second installation 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.

[0210] The elastic arm 6b18 is in a cantilever shape and is provided with a hook portion 6b181 at its free end. The hook portion 6b181 is provided with a guiding inclined surface 6b1811 and a locking surface 6b1812. The elastic arm 6b18 can elastically deform around a certain fulcrum. When the elastic arm 6b18 moves from the non-locking position to the locking position, the guiding inclined surface 6b1811 cooperates with the protrusion 1b252. When the elastic arm 6b18 reaches the locking position, the locking surface 6b1812 is locked with the protrusion 1b252.

[0211] The unlocking portion 6b17 is used to apply an unlocking force, so that the elastic arm 6b18 elastically deforms around the fulcrum to achieve unlocking.

[0212] 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 on its outer side, and the first sealing ring 6b3 is clamped in the first positioning groove 6b191. The first insertion portion 6b19 is further provided with a fixing groove 6b192 that penetrates 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 and protrude from the first insertion portion 6b19 along the first direction A1-A1.

[0213] Please refer to 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 that cooperates with the second terminal 7b2, a second sealing plug 7b5 that cooperates 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 can understand that in other embodiments of the present invention, in applications with low waterproof requirements, the mounting assembly 7b may not be provided with one or several of the first sealing plug 7b4, the second sealing plug 7b5, and the second sealing ring 7b6.

[0214] 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 the first direction A1-A1, and a first receiving hole 7b14 and a second receiving hole 7b15 that penetrate the insulating block 7b1 along the first direction A1-A1.

[0215] In the illustrated embodiment of the present invention, the second body portion 7b11 is provided with a first locking block 7b111 that protrudes upward along the second direction A2-A2, a second locking block 7b112 that protrudes downward along the second direction A2-A2, and a limiting convex block 7b113 that protrudes upward along the second direction A2-A2. The limiting convex block 7b113 and the first locking block 7b111 are on the same side of the second body portion 7b11. The limiting convex block 7b113 and the first locking block 7b111 are spaced apart along the first direction A1-A1. In addition, the second body portion 7b11 is further provided with a tapered guiding surface 7b114 near the transition portion 7b13.

[0216] The transition portion 7b13 is provided with a second positioning groove 7b131 on its outer side, and the second sealing ring 7b6 is clamped in the second positioning groove 7b131.

[0217] The second plugging portion 7b12 is provided with 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 is provided with a mounting opening 7b1211 that penetrates the first wall portion 7b121 and is connected to the first receiving hole 7b14 and the second receiving hole 7b15. In addition, the first wall portion 7b121 is further provided with a guiding block 7b1212 that protrudes into the mounting opening 7b1211, and a clamping port 7b1213 located at the upper end of the guiding block 7b1212 and communicating with the mounting opening 7b1211. The guiding block 7b1212 is provided with a guiding inclined surface 7b1214. The second wall portion 7b122 is provided with a receiving notch 7b1221 that communicates with the mounting opening 7b1211.

[0218] The plug pin 7b7 includes a side plate 7b71 mounted in the mounting opening 7b1211, a bottom plate 7b72 connected to the side plate 7b71, and a first abutting convex block 7b73 and a second abutting convex block 7b74 that protrude inward from the inner wall surface of the side plate 7b71. The first abutting convex block 7b73 and the second abutting convex block 7b74 are arranged at intervals along the second direction A2-A2. The first abutting convex block 7b73 and the second abutting convex block 7b74 respectively protrude from the mounting opening 7b1211 into the first receiving hole 7b14 and the second receiving hole 7b15. The side plate 7b71 is provided with a locking hook portion 7b711 that protrudes along the first direction A1-A1.

[0219] 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 expands radially 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 in the shape of a frame and is provided with a first jack 7b231 for receiving the first pin portion 6b21.

[0220] 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 expands radially 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 in the shape of a frame and is provided with a second jack 7b331 for receiving the second pin portion 6b22.

[0221] When assembling the mounting component 7b, first sleeved the first sealing plug 7b4 and the second sealing plug 7b5 on the first low-voltage wire harness (not shown) and the second low-voltage wire harness (not shown) respectively; then, press-connected the first low-voltage wire harness (not shown) and the second low-voltage wire harness (not shown) to the first cable connection part 7b21 and the second cable connection part 7b31 respectively; then, sleeved the first sealing plug 7b4 and the second sealing plug 7b5 on the first cable connection part 7b21 and the second cable connection part 7b31 respectively; at this time, both ends of the first sealing plug 7b4 are limited by the first limiting part 7b22 and the first matching part 7b23; both ends of the second sealing plug 7b5 are limited by the second limiting part 7b32 and the second matching part 7b33; then, snap the second sealing ring 7b6 into the second positioning groove 7b131; then, initially install the bolt 7b7 in the installation opening 7b1211; at this time, the locking hook part 7b711 is not locked in the locking port 7b1213; then, insert and fix the second terminal 7b2 and the third terminal 7b3 into the first receiving hole 7b14 and the second receiving hole 7b15. The first sealing plug 7b4 and the second sealing plug 7b5 can seal the second terminal 7b2 and the third terminal 7b3; then, finally install the bolt 7b7 along the second direction A2-A2 in the installation opening 7b1211; at this time, the locking hook part 7b711 passes over the guiding block 7b1212 and is locked in the locking port 7b1213, and the bottom plate 7b72 is received in the receiving notch 7b1221; finally, insert the mounting component 7b along the first direction A1-A1 into the first assembly space 1b242. At least part of the second plugging part 7b12 is inserted into the second mounting protrusion 1b25, the second sealing ring 7b6 seals the mounting component 7b, the conical guiding surface 7b114 fits with the guiding conical surface 1b2411, the limiting wall surface 1b2412 blocks the limiting protrusion 7b113, and the first clamping block 7b111 and the second clamping block 7b112 are locked in the clamping holes 1b243 to prevent the mounting component 7b from falling off.

[0222] When the electrical connector 100 is mated with the docking connector 200, under the guidance of the second conical surface 1a311, the first inclined surface 7a212 and the second inclined surface 7a312 of the electrical connector 100, the guiding conical surface 1b180 of the docking connector 200 is mated with the second conical surface 1a311, the first docking conical surface 1b1311 of the docking connector 200 is mated with the first inclined surface 7a212, and the second docking conical surface 1b1411 of the docking connector 200 is mated with the second inclined surface 7a312. As a result, the second housing 1b of the docking connector 200 can achieve blind mating with the first housing 1a of the electrical connector 100, reducing the problem that the electrical connector 100 and the docking connector 200 cannot be docked due to cumulative tolerances. When the electrical connector 100 and the docking connector 200 are inserted in place along the second direction A2-A2, a tool is inserted into the first plum blossom groove 2b810 of the first rotating cover 2b8 and the second plum blossom groove 3b810 of the second rotating cover 3b8 to rotate the first rotating cover 2b8 and the second rotating cover 3b8. The first docking terminal 2b1 and the second docking terminal 3b1 are respectively directly or indirectly driven by the first rotating cover 2b8 and the second rotating cover 3b8, and while rotating, they move along the second direction A2-A2. Finally, the first docking portion 2b13 and the second docking portion 3b13 are respectively screwed into the first terminal docking hole 2a23 and the second terminal docking hole 3a23. When the electrical connector 100 is provided with the first dental brace 2a3 and the second dental brace 3a3, the first docking thread 2b131 of the first docking portion 2b13 and the second docking thread 3b131 of the second docking portion 3b13 are respectively threadedly engaged with the first dental brace 2a3 and the second dental brace 3a3 to improve the docking reliability.

[0223] When the first rotating cover 2b8 and the second rotating cover 3b8 are rotated in place, the locking device 6b can be moved along the first direction A1-A1, so that the elastic arm 6b18 reaches the locking position to 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.

[0224] Compared with the related art, when the electrical connector 100 is mated with the docking connector 200 in the present invention, it is not necessary to disassemble the docking connector 200, reducing the risk of electric shock and improving the docking convenience. By rotating the first rotating cover 2b8 and the second rotating cover 3b8, the first docking terminal 2b1 and the second docking terminal 3b1 can be respectively electrically connected to the first cable assembly 2a and the second cable assembly 3a. In the illustrated embodiment of the present invention, the conductive elements of the docking connector 200 only include two screws (i.e., the first docking terminal 2b1 and the second docking terminal 3b1), thus reducing the number of parts and improving the docking convenience.

[0225] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. The understanding of the present invention should be based on those skilled in the art. Although the present specification has described the present invention in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the art can still modify the present invention or make equivalent substitutions, and all technical solutions and their improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. An electrical connector (100), characterized in that: include: A first shell (1a), wherein the first shell (1a) comprises a first main body (1a1), a first mask (1a3) and a first annular groove (1a4), wherein the first main body (1a1) comprises a first protruding portion (1a17), and the first annular groove (1a4) is located between the first protruding portion (1a17) and the first mask (1a3); and the first mask (1a3) is provided with a second conical surface (1a311) exposed in the first annular groove (1a4); a second sealing ring (6a), wherein the second sealing ring (6a) is at least partially installed in the first annular groove (1a4), and the second sealing ring (6a) comprises an axial sealing portion and a radial sealing portion; as well as A retaining cover (7a), wherein the retaining cover (7a) is fixed to the first shell (1a), and the retaining cover (7a) comprises a pressure plate portion (7a1), wherein the pressure plate portion (7a1) abuts against the second sealing ring (6a).

2. The electrical connector (100) according to claim 1, characterized in that: 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), 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).

3. The electrical connector (100) according to claim 2, characterized in that: The first main body portion (1a1) includes a first inner wall portion (1a12) exposed in the first annular groove (1a4), and the second sealing portion (6a2) abuts against the first inner wall portion (1a12).

4. The electrical connector (100) according to claim 2, characterized in that: The first protruding portion (1a17) is provided with a first bottom surface (1a178) located at the bottom of the first protruding portion (1a17), and the first sealing portion (6a1) is clamped between the first bottom surface (1a178) and the pressure plate portion (7a1).

5. The electrical connector (100) according to claim 2, characterized in that: The first protruding portion (1a17) is provided with a first conical surface (1a177) exposed outwardly in the first annular groove (1a4), and the third sealing portion (6a3) is sleeved on the first conical surface (1a177).

6. The electrical connector (100) according to claim 1, characterized in that: The first protrusion (1a17) comprises a first mounting opening (1a171); The retaining cover (7a) includes a first sleeve portion (7a2) connected to the pressure plate portion (7a1), the first surrounding wall (7a21) is received in the first mounting opening (1a171), and the first sleeve portion (7a2) is provided with a first surrounding wall (7a21) and a first receiving cavity (7a22) surrounded by the first surrounding wall (7a21).

7. The electrical connector (100) according to claim 6, characterized in that: The first surrounding wall (7a21) is provided with a first inclined surface (7a212) exposed in the first receiving cavity (7a22), and the first inclined surface (7a212) and the second conical surface (1a311) both guide the docking connector (200).

8. The electrical connector (100) according to claim 1, characterized in that: The electrical connector (100) further comprises a first cable assembly (2a), wherein the first cable assembly (2a) comprises a first cable (2a1) and a first terminal mounting block (2a2) fixed to the first cable (2a1); the first terminal mounting block (2a2) comprises a first terminal docking hole (2a23).

9. The electrical connector (100) according to claim 8, characterized in that: The first cable assembly (2a) also includes a first socket (2a3) installed in the first terminal docking hole (2a23).

10. The electrical connector (100) according to claim 9, characterized in that: The first terminal docking hole (2a23) is a first threaded hole; the first tooth sleeve (2a3) is in the shape of a coiled spring and is fixed in the first threaded hole; a first blocking protrusion (2a24) is provided on the inner wall of the first terminal mounting block (2a2) and extends into the first terminal docking hole (2a23); the first blocking protrusion (2a24) limits the first tooth sleeve (2a3).

11. The electrical connector (100) according to claim 8, characterized in that: The first cable (2a1) comprises a first core (2a11), the first core (2a11) being provided with a first surface (2a111), a second surface (2a112) opposite to the first surface (2a111), and a first mounting hole (2a110) penetrating the first surface (2a111) and the second surface (2a112); The first terminal mounting block (2a2) comprises a first base (2a21) and a first extension (2a22); the first base (2a21) and the first extension (2a22) are both cylindrical; the diameter of the first base (2a21) is larger than the diameter of the first extension (2a22); the first extension (2a22) is fixed in the first mounting hole (2a110); the first base (2a21) protrudes from the first surface (2a111) to be locked with the first shell (1a).

12. The electrical connector (100) according to claim 11, characterized in that: The buckling cover (7a) comprises a first sleeve portion (7a2) connected to the pressure plate portion (7a1), the first surrounding wall (7a21) is received in the first mounting opening (1a171), and the first sleeve portion (7a2) is provided with a first surrounding wall (7a21) and a first receiving cavity (7a22) surrounded by the first surrounding wall (7a21); The first extension portion (2a22) is provided with a first exposed surface (2a221) exposed in the first receiving cavity (7a22).

13. The electrical connector (100) according to claim 8, characterized in that: The first shell (1a) comprises a first mounting portion (1a2) connected to the first main body portion (1a1), and the first mounting portion (1a2) is provided with a mounting channel (1a21); The electrical connector (100) comprises a first sealing ring (4a) matched with the first cable assembly (2a), the first sealing ring (4a) comprises a first sleeve portion (4a1), the first sleeve portion (4a1) is sleeved on the first cable (2a1) and sealed in the installation channel (1a21).

14. The electrical connector (100) according to claim 13, characterized in that: The first sealing ring (4a) comprises a first extending piece (4a11) and a second extending piece (4a12) respectively extending from the first sleeve portion (4a1); The electrical connector (100) also includes a tail cover (5a) fixed to the first mounting portion (1a2), the tail cover (5a) includes a first frame portion (5a2), the first frame portion (5a2) is provided with a first mounting groove (5a20), a first inner wall surface (5a21) exposed in the first mounting groove (5a20), and a second inner wall surface (5a22) exposed in the first mounting groove (5a20) and opposite to the first inner wall surface (5a21), the first cable (2a1) passes through the first mounting groove (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).

15. The electrical connector (100) according to claim 1, characterized in that: The first mask portion (1a3) comprises a first conical portion (1a31) and a first flange portion (1a32) extending outward from the first conical portion (1a31); the second conical surface (1a311) is arranged on the inner side surface of the first conical portion (1a31); the first flange portion (1a32) is provided with a first clearance groove (1a321) and a second clearance groove (1a322) penetrating the first flange portion (1a32); the first clearance groove (1a321) and the second clearance groove (1a322) are arranged at intervals.

16. The electrical connector (100) according to any one of claims 1 to 15, characterized in that: The electrical connector (100) further comprises a first cable assembly (2a), wherein the first cable assembly (2a) comprises a first cable (2a1) and a first clamping sleeve (2a4) clamped with the first cable (2a1), and the first clamping sleeve (2a4) is buckled with the first shell (1a).

17. A connector assembly, characterized in that: include: An electrical connector (100), wherein the electrical connector (100) is the electrical connector (100) according to any one of claims 1 to 16; and A docking connector (200) comprising a second shell (1b), wherein the second shell (1b) is provided with a guide conical surface (1b180), and the guide conical surface (1b180) is adapted to a second conical surface (1a311) of the electrical connector (100).

18. The connector assembly according to claim 17, wherein: The second shell (1b) includes a second main body (1b1), the second main body (1b1) includes a second substrate (1b11), a first protrusion (1b12) connected to the second substrate (1b11), and a plurality of first connecting blocks (1b18) connecting the second substrate (1b11) and the first protrusion (1b12), the first protrusion (1b12) being provided with a first receiving space (1b121) for at least partially receiving the electrical connector (100) and a first matching conical surface (1b122) located on the inner side surface of the first protrusion (1b12) and exposed in the first receiving space (1b121); each first connecting block (1b18) is provided with a first guide surface (1b181) arranged obliquely, and the guide conical surface (1b180) is formed by the first guide surface (1b181).

19. The connector assembly according to claim 17, wherein: The docking connector (200) further comprises: A first butt-jointed terminal (2b1), the first butt-jointed terminal (2b1) comprising a first butt-jointed portion (2b13), the first butt-jointed portion (2b13) extending in a second direction (A2-A2); a first rotating cover (2b8), the first rotating cover (2b8) directly or indirectly driving the first butting terminal (2b1) to move along the second direction (A2-A2); the first rotating cover (2b8) comprising a first cover body (2b81), a first annular outer wall portion (2b82) protruding from the first cover body (2b81), a first annular inner wall portion (2b83) protruding from the first cover body (2b81), and a first annular accommodating groove (2b85) located between the first annular inner wall portion (2b83) and the first annular outer wall portion (2b82); A first butt seal ring (2b6), the first butt seal ring (2b6) being located in the first annular receiving groove (2b85); and A second butt seal ring (2b7), wherein the second butt seal ring (2b7) is located in the first annular accommodating groove (2b85), and the first butt seal ring (2b6) and the second butt seal ring (2b7) are arranged at intervals along the second direction (A2-A2).

20. The connector assembly of claim 19, wherein: The cross section of the first docking sealing ring (2b6) comprises a first base portion (2b61) and a plurality of first abutting protrusions (2b62) connected to the first base portion (2b61) and protruding from the first base portion (2b61), wherein the first abutting protrusions (2b62) are distributed along the circumference of the first base portion (2b61); The cross-sectional shape of the second butt sealing ring (2b7) is rectangular; or the cross-sectional shape of the second butt sealing ring (2b7) includes a second base portion (2b71) and a plurality of second abutting protrusions (2b72) connected to the second base portion (2b71) and protruding from the second base portion (2b71), and the second abutting protrusions (2b72) are distributed along the circumference of the second base portion (2b71).

21. The connector assembly of claim 19, wherein: The first cover body (2b81) of the first rotating cover (2b8) includes a first stepped surface (2b87) exposed in the first annular receiving groove (2b85), the first stepped surface (2b87) including a first bottom end surface (2b871), a second bottom end surface (2b872) lower than the first bottom end surface (2b871), and a first connecting surface (2b873) connecting the first bottom end surface (2b871) and the second bottom end surface (2b872); The first butt sealing ring (2b6) is sleeved on the first annular inner wall portion (2b83); The second butt sealing ring (2b7) is sleeved on the first connecting surface (2b873).

22. The connector assembly of claim 19, wherein: The first butt-jointed terminal (2b1) comprises a first abutting portion (2b11) and a first assembly portion (2b12) connected to the first butt-jointed portion (2b11) along the second direction (A2-A2); the first butt-jointed portion (2b13) is connected to the first assembly portion (2b12) along the second direction (A2-A2); The docking connector (200) further comprises a first elastic washer (2b2) ​​sleeved on the first assembly portion (2b12) and a first flat washer (2b3) sleeved on the first assembly portion (2b12), wherein the first elastic washer (2b2) ​​is located between the first abutting portion (2b11) and the first flat washer (2b3) along the second direction (A2-A2).

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