Electrical connector

Abstract

The utility model relates to the field of electric connector discloses an electric connector, including fixed block, spacing structure, terminal subassembly and shell, and the plug cavity is formed on fixed block, spacing structure includes the first limit piece of setting in the side wall of fixed block, and the first limit piece has a elastic limit end, and the terminal subassembly is inserted in the plug cavity along the direction of insertion, and the outer wall of terminal subassembly is provided with the first fitting piece, and the first inner chamber is formed in the shell, and the inner wall surface of first inner chamber is used to hold the elastic limit end to the inside, through the mutual cooperation between the first limit piece and the first fitting piece, to make the first limit piece can limit the movement of metal terminal in the direction of insertion, makes metal terminal unable to loosen after installation, and provides the support for the first limit piece, supports and locks the first limit piece under the premise of not additional new structure, makes the first fitting piece and the first limit piece between can always keep the locking state of metal terminal, improves reliability and stability.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors. Background Technology

[0002] Electrical connectors are widely used in electronics, electrical appliances, and instrumentation. Their function is to act as a bridge connecting interrupted circuits or independent circuits, undertaking the task of current or signal transmission; or they can be used in conjunction with electrical terminals to form board-to-wire connections; or they can be used independently for board-to-board connections. Electrical connectors are widely used in various fields, such as automobiles and electric vehicles, to connect various electrical components. Automotive electrical connectors, as one type, are an innovative electronic interconnection solution designed specifically for modern intelligent vehicles. Their core features are multi-functional integration and high-frequency signal transmission capabilities. They integrate multiple transmission requirements such as power supply, high-speed data (e.g., Ethernet, LVDS), and radio frequency signals (e.g., FAKRA / Mini-FAKRA) into a single interface using a modular structure, employing differential pair shielding technology and impedance matching design to support high data rates and high current transmission.

[0003] Existing electrical connectors consist of a housing and terminal assemblies. The housing typically contains a cavity for the terminal assembly to be inserted into. Positioning is achieved by using a flyer structure on the surface of the terminal assembly to hold it in place within the cavity. While this method ensures the positioning of the terminal assembly, the relatively small and thin terminal assembly is prone to deformation of the flyer structure during insertion. Since the terminal assembly is crucial for electrical signal transmission in the entire connector, deformation of the flyer structure can easily lead to loosening of the terminal module, resulting in poor contact and affecting the use and stability of the electrical connector. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide an electrical connector to solve the problem of poor stability of existing terminal assemblies limited by the flyer structure.

[0005] To solve the above-mentioned technical problems, the present invention provides an electrical connector comprising a fixing block, a limiting structure, a terminal assembly, and a housing. The fixing block has a mating cavity extending through both the front and rear sides along an insertion direction. The limiting structure includes a first limiting member disposed on the side wall of the fixing block. The first limiting member has an elastic limiting end, which is capable of deforming inward or outward along the thickness direction of the side wall. The terminal assembly is inserted into the mating cavity along the insertion direction. A first mating member is disposed on the outer wall of the terminal assembly to limit and cooperate with the first limiting member, thereby preventing the terminal assembly from moving along the insertion direction. A first inner cavity is formed inside the housing for mounting the fixing block therein. The inner wall surface of the first inner cavity is used to abut the elastic limiting end inward to keep it in a limiting and cooperating state with the first mating member.

[0006] Furthermore, the elastic limiting end has a first limiting surface distributed along the wall thickness direction and a second limiting surface disposed opposite the inner wall of the outer shell; the first mating member has a first abutting surface abutting against the first limiting surface after the terminal assembly is inserted into place; when the fixing block carries the terminal assembly into the first inner cavity, the inner wall of the first inner cavity abuts against the second limiting surface inward, thereby keeping the first limiting surface in abutting against the first abutting surface and preventing the elastic limiting end from moving outward along the wall thickness direction.

[0007] Furthermore, the elastic limiting end is provided with a notch corresponding to the position of the first mating member. The rearward edge of the notch along the insertion direction is configured as the first limiting surface, and the side edge of the notch perpendicularly connected to the outer end of the first limiting surface along the wall thickness direction is configured as the third limiting surface. The first mating member also has a second abutting surface corresponding to the third limiting surface and facing the inner wall of the shell. The second abutting surface abuts against the third limiting surface outward, so that the second limiting surface is kept in abutting against the inner wall of the shell. The third limiting surface and the inner wall of the shell limit the elastic limiting end from the inside and outside direction to prevent the elastic limiting end from disengaging from the first mating member.

[0008] Furthermore, a window extending along the wall thickness direction is provided on the side wall of the fixing block, the second limiting member is distributed along the insertion direction, and the end of the first limiting member away from the elastic limiting end is configured as a fixed end, which is fixed to the window sill; the second limiting surface of the elastic limiting end passes through the window and abuts against the inner wall of the outer shell.

[0009] Furthermore, the outer wall of the terminal assembly has an inwardly recessed clearance space at the position corresponding to the first limiting member.

[0010] Furthermore, the terminal assembly includes a first terminal group and a second terminal group, which are arranged in an array layout.

[0011] Furthermore, the present invention also includes a wire cover fastened to the rear end face of the outer casing, a wrench rotatably connected to both sides of the outer casing via two connecting parts to press the wire cover or move away from the wire cover, and a movable part movably disposed on the outer casing and driven to rotate by moving and engaging with the connecting parts.

[0012] Furthermore, the connecting part includes a wing plate formed at the end of the wrench and a toothed ring coaxial with the inner side of the wing plate. The movable part includes a slider movably disposed on the first plastic housing corresponding to the positions of the toothed rings on both sides. The slider is provided with teeth for meshing with the toothed ring to drive the wrench to rotate. A movable groove is formed on the slider to slide with the complementary connector when the board end connector is inserted into the first plastic housing to drive the slider to slide. The movable groove causes the wrench to press the wire cover after the board end connector is inserted into the position.

[0013] Furthermore, a circular groove is recessed on the outer wall of the outer shell at the position corresponding to the connecting part, a connecting post is protruding at the center of the circular groove, an annular groove is recessed on the connecting post along the circumference, a through hole is opened on the wing plate, and multiple elastically snapped into the annular groove are arranged around the outside of the through hole to allow the wing plate to rotate and be connected thereon.

[0014] Furthermore, the outer shell is provided with a triangular block with a pointed tip facing the wire cover side, and the wire cover has a triangular groove that wedges with the triangular block along the insertion direction.

[0015] The electrical connector of this utility model has at least the following beneficial effects: through the mutual cooperation between the first limiting member and the first mating member, the first limiting member can restrict the movement of the metal terminal in the insertion direction, so that the metal terminal cannot be loosened backward after installation. Furthermore, through the mutual cooperation between the first limiting member, the first mating member, and the inner wall of the first inner cavity, the first limiting member is supported. The first limiting member is supported and locked without adding any additional structure, so that the first mating member and the first limiting member can always maintain the locked state of the metal terminal, thereby improving reliability and stability. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of the electrical connector of the present invention (with the wire cover loosened by the wrench); Figure 2 This is an exploded view of the high-speed connector of the present invention; Figure 3 This is a schematic diagram of the outer casing of the present invention; Figure 4 This is a schematic diagram of the outer casing of the present invention (from another angle); Figure 5 This is a schematic diagram of the structure of the fixing block of the present invention; Figure 6 This is an exploded view of the fixing block, the fourth mating component, the terminal assembly, and the sealing plug of the present invention; Figure 7 This is a side sectional view of the fixing block and the first terminal group of the present invention; Figure 8 This is a side sectional view of the fixing block and the first terminal group (in the unassembled state) of the present invention; Figure 9 for Figure 14 An enlarged view of section C shown; Figure 10 This is a schematic diagram of the structure of the front component of the present invention; Figure 11 This is a partial schematic diagram of the fixing block of the present invention; Figure 12 This is a half-sectional schematic diagram of the high-speed connector of the present invention; Figure 13 for Figure 8 An enlarged view of part A shown; Figure 14 This is a side sectional view of the front component, fixing block, and outer shell of the present invention (sectioned with the first limiting member in the unassembled state); Figure 15 for Figure 10 An enlarged view of part B shown; Figure 16 This is a side sectional view of the fixing block and the second terminal group of the present invention; Figure 17 This is a side sectional view of the fixing block and the second terminal group (in the unassembled state) of the present invention; Figure 18 for Figure 17 An enlarged view of part D shown; Figure 19 This is a schematic diagram of the structure of the fourth mating component of the present invention; Figure 20 This is a schematic diagram showing the mating of the second terminal group and the fourth mating member of the present invention; Figure 21 This is a partial schematic diagram of the wrench of the present invention; Figure 22 This is a cross-sectional view showing the mating of the movable part and the connecting part of the present invention (with the wrench in the open state); Figure 23This is a cross-sectional view of the mating of the movable part and the connecting part (in the state of the wrench tightening the wire cover) of the present invention.

[0017] The meanings of the labels in the attached diagram are as follows: Outer shell 1, first inner cavity 111, second inner cavity 112, third inner cavity 113, inner ring shell 12, connecting side 13, buckle 131, triangular block 132, outward protrusion 14, sliding groove 141, circular groove 151, connecting post 152, limiting stop 16, first opening 171, second opening 172, first side 181, second side 182, fixing block 2, exposed part 21, first side groove 211, insertion cavity 22, anti-reverse groove 221, first window 231, second window 232, front component 3, first sleeve 31, second sleeve 32, second side groove 33 Guide block 34, third side groove 35, first limiting member 41, first connecting arm 411, elastic limiting end 4111, first limiting surface 412, second limiting surface 413, third limiting surface 414, second limiting member 42, second connecting arm 421, third connecting arm 422, first inclined section 4221, fourth limiting surface 423, fifth limiting surface 424, first clearance cavity 425, third limiting member 43, fourth connecting arm 431, second inclined section 4311, fifth connecting arm 432, sixth limiting surface 433, seventh limiting surface 434, eighth limiting surface 4 35. Ninth limiting surface 436. First mating part 51. First abutting surface 511. Second abutting surface 512. Second mating part 52. Fourth side groove 521. Mating protrusion 522. Protruding surface 5221. Third abutting surface 523. Fourth abutting surface 524. Third mating part 53. Protruding ring 531. Fifth abutting surface 532. Sixth abutting surface 533. Seventh abutting surface 534. Fourth mating part 54. Limiting insert 541. Eighth abutting surface 542. Limiting end 543. Clamping surface 5431. Tenth limiting surface 544. First terminal group 61. First insertion end 6 11. First connecting end 612, outer ring shell 613, clearance space 614, anti-retraction part 615, second terminal group 62, second insertion end 621, second connecting end 622, mating section 5221, cable 63, sealing gasket 7, socket 71, wire cover 8, slot 81, triangular groove 82, wrench 9, connecting part 91, wing plate 911, toothed ring 912, perforation 913, valve piece 914, movable part 10, slider 101, toothed part 102, movable groove 103, vertical groove section 1031, inclined groove section 1032, flat groove section 1033, sealing ring 11. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Please see Figure 1 and Figure 2The electrical connector of this utility model includes a housing 1, a fixing block 2 installed inside the housing 1, a front member 3 connected to the housing 1 and the fixing block 2, a terminal assembly installed inside the fixing block 2, a first limiting member 41 disposed on the side wall of the fixing block 2, a first mating member 51 disposed on the outer wall of the terminal assembly to limit and cooperate with the first limiting member 41, a second limiting member 42 disposed on the front member 3, a second mating member 52 disposed on the housing 1 and the fixing block 2, a third limiting member 43 disposed on the fixing block 2, a third mating member 53 formed on the terminal assembly, a fourth mating member 54 disposed on the fixing block 2, a sealing gasket 7 disposed inside the housing 1, a sealing ring 11 disposed inside the housing 1, a wire cover 8 disposed on the rear end face of the housing 1 along the insertion direction, a wrench 9 rotatably connected to both sides of the housing 1 by two connecting parts 91 to press the wire cover 8 or move away from the wire cover 8, and a movable part 10 disposed on the housing 1 and driven to rotate the wrench 9 by moving to cooperate with the connecting parts 91. The first limiting member 41, the second limiting member 42, and the third limiting member 43 together constitute a limiting structure. The second mating member 52, the first mating member 51, the third mating member 53, and the fourth mating member 54 together constitute a mating structure. The fixing block 2 provides support for the installation of the terminal assembly. The front component 3, in conjunction with the second limiting member 42 and the second mating member 52, secures the fixing block 2 and the housing 1 together for a stable connection. The terminal assembly is used to transmit electrical signals. The first limiting member 41 and the first mating member 51 cooperate to securely lock the terminal assembly onto the housing 1, preventing it from detaching from the fixing block 2 and improving the installation stability of the terminal assembly. The third limiting member 43 also restricts the movement of the terminal assembly and, in conjunction with the third mating member 53 and the fourth mating member 54, restricts the movement of the terminal assembly while locking the third limiting member 43. The sealing gasket 7 and the sealing ring 11 ensure the sealing of the front and rear sides of the fixing block 2, preventing water and dust from contacting the terminal assembly and affecting the use of the connector. The wire cover 8 protects the cable 63 connected to the terminal assembly, allowing the cable 63 to pass through. The wrench 9, in conjunction with the movable part 10, is used for the installation and fixing of the wire cover 8, facilitating its removal, installation, and positioning.

[0020] Please see Figure 3 and Figure 4The outer casing 1 has a square structure. For ease of understanding, the width direction of the outer casing 1 is defined as the first direction, the length direction of the outer casing 1 is defined as the second direction, and the height direction of the outer casing 1 is defined as the insertion direction. The terminal assembly and fixing block 2 are all installed on the outer casing 1 along the insertion direction. Each component, including the outer casing 1, fixing block 2, and front member 3, is defined as a front side and a rear side along the insertion direction, and each has a front end face and a rear end face. A first inner cavity 111, a second inner cavity 112, and a third inner cavity 113 are sequentially formed inside the outer casing 1. The second inner cavity 112, the first inner cavity 111, and the third inner cavity 113 are connected sequentially. The second inner cavity 112 extends rearward through the rear end face of the outer casing 1, and the third inner cavity 113 extends forward through the front end face of the outer casing 1. The width (dimension in the first direction) of the third inner cavity 113 is greater than the width of the second inner cavity 112. A square-shaped inner ring shell 12 is formed on the front end face of the second inner cavity 112 extending forward along the insertion direction. The inner ring shell 12 protrudes inward relative to the inner wall of the second inner cavity 112. The first inner cavity 111 is formed by hollowing out the inner side of the inner ring shell 12. The rear end face of the first inner cavity 111 communicates with the second inner cavity 112, and the front end face of the inner ring shell 12 communicates with the third inner cavity 113 along the insertion direction. The width of the inner ring shell 12 is smaller than that of the second inner cavity 112 and the third inner cavity 113, and the front end face of the inner ring shell 12 (i.e., the front end face of the first inner cavity 111) is located in the third inner cavity 113 and spaced apart from the front end face of the outer shell 1 in the insertion direction, so that the third inner cavity 113 surrounds the outer periphery of the inner ring shell 12. The corresponding structure of the complementary connector can be inserted into the third inner cavity 113 to surround the outer periphery of the inner ring shell 12 and to mate with the outer shell 1. The rear end face of the outer shell 1 protrudes rearward along the insertion direction to form a connecting side 13 on the rear end face of the outer shell 1. The connecting side 13 is relatively narrower than the two sides of the outer shell 1 in the first direction. The second inner cavity 112 is formed in the connecting side 13, and the wire cover 8 is mounted on the connecting side 13. The outer casing 1 has protrusions 14 on both sides along the first direction relative to the connecting side 13. A circular groove 151 extending to the side of the connecting side 13 is recessed on the rear end face of the two protrusions 14. A connecting post 152 protrudes from the center of the circular groove 151, and an annular groove is recessed along the circumference of the connecting post 152 to facilitate connection with the connecting part 91 of the wrench 9. A sliding groove 141 adapted to the movable part 10 is formed on one side along the second direction on both protrusions 14, and the movable part 10 is slidably installed in the sliding groove 141 along the second direction.

[0021] Please see Figure 5 and Figure 6The fixing block 2 is made of plastic and also has a cuboid structure. An exposed portion 21 protrudes forward from the front end face of the fixing block 2 along the insertion direction. The fixing block 2 is adapted to fit into the first inner cavity 111 and can be inserted into the first inner cavity 111. The exposed portion 21 extends out of the first inner cavity 111 and is installed in the third inner cavity 113. The front end face of the exposed portion 21 is flush with the front end face of the outer shell 1. To prevent the fixing block 2 from entering the third inner cavity 113 after being installed in the first inner cavity 111, a limiting stop 16 is formed by bending inward around the front end face of the first inner cavity 111 along the insertion direction (and the front end face of the inner ring shell 12). The limiting stop 16 protrudes inward around the inner ring shell 12, forming a square frame structure. The inner side of the limiting stop 16 connects to the second inner cavity 112, and its dimensions in the first and second directions are smaller than the dimensions of the second inner cavity 112 in the first and second directions, respectively. The exposed portion 21 is located inside the limiting stop 16, and its outer wall is narrower and recessed inward relative to the outer wall of the fixing block 2. Conversely, the outer wall of the fixing block 2 protrudes outward relative to the outer wall of the exposed portion 21, so that the front end face of the fixing block 2 is exposed outside the exposed portion 21. When the fixing block 2 is installed, when the front end face of the fixing block 2 abuts against the limiting stop 16, the fixing block 2 cannot move forward any further. The limiting stop 16 is used to restrict the fixing block 2 from continuing to move forward and prevent the exposed portion 21 from moving outside the third inner cavity 113.

[0022] After the exposed portion 21 protrudes into the third inner cavity 113, both the exposed portion 21 and the third inner cavity 113 surrounding the exposed portion 21 are used for the complementary connector to be inserted into them. The front member 3 is fitted onto the exposed portion 21. In order to improve the connection and stability between the front member 3 and the exposed portion 21, first side grooves 211 are opened on the four outer walls of the exposed portion 21 along the insertion direction. Each first side groove 211 is open outward and forward along the insertion direction. In this invention, the terms "inward" and "outward" are used, taking the exposed portion 21 as an example. The first side grooves 211 on the outer walls of the exposed portion 21 along the first direction are inward on the side facing the exposed portion 21 along the first direction, and outward on the side facing away from the exposed portion 21 along the first direction. Similarly, the first side grooves 211 on the outer walls of the exposed portion 21 along the second direction are inward on the side facing the exposed portion 21 along the second direction, and outward on the side facing away from the exposed portion 21 along the second direction. The same principle applies to the outer shell 1 and other components. A insertion cavity 22 is formed on the fixing block 2, extending through the front and rear faces along the insertion direction. The terminal assembly is installed within the insertion cavity 22.

[0023] Please see Figure 6The terminal assembly includes a first terminal group 61 and a second terminal group 62, which are arranged side-by-side along a first direction or a second direction. In this embodiment, they are arranged along the second direction. At least two first terminal groups 61 and two terminal groups 62 are provided and arranged side-by-side. The first terminal group 61 is an Ethernet module for transmitting high-speed data signals, and the second terminal group 62 is a Mini-FAKRA module for transmitting radio frequency signals. Both the first terminal group 61 and the second terminal group 62 are arranged in two rows, each row being distributed along the second direction.

[0024] The first terminal group 61 includes a first metal terminal and a cable 63 connected to the first metal terminal. The first metal terminal is made of metal and has a first insertion end 611 and a first connection end 612. The first insertion end 611 is used to mate with a corresponding structure in the complementary connector to achieve conductivity, and the first connection end 612 is wrapped around one end of the cable 63. The second terminal group 62 includes a second metal terminal and a cable 63 connected to the second metal terminal. The second metal terminal is made of metal and has a second insertion end 621 and a second connection end 622. The second insertion end 621 is used to mate with a corresponding structure in the complementary connector to achieve conductivity, and the second connection end 622 is wrapped around one end of the cable 63. The number of insertion cavities 22 corresponds to the number of first and second metal terminals and is formed along the insertion direction inside the fixing block 2 and the exposed portion 21. Each first and second metal terminal is inserted into one insertion cavity 22. The structure of the first and second metal terminals can be any existing high-speed mixed-assembly connector terminal structure. The first insertion end 611 and the second insertion end 621 are inserted into the exposed portion 21, and the first connecting end 612 and the second connecting end 622 are both inserted into the fixing block 2. An outer ring shell 613 is provided or fitted on the outer wall of the first insertion end 611. When the first insertion end 611 is inserted into the insertion cavity 22, the outer ring shell 613 fits against the inner wall of the insertion cavity 22, and the rear end of the outer ring shell 613 is located within the insertion cavity 22 inside the fixing block 2.

[0025] A retaining portion 615 may be provided on the outer wall of the outer ring shell 613. The retaining portion 615 may be a protrusion or a stamped and outwardly inclined spring piece. A retaining groove 221 is provided on the inner wall of the insertion cavity 22 at the position corresponding to the retaining portion 615, allowing the retaining portion 615 to pass through it in the insertion direction. When the retaining portion 615 abuts against the front end face of the retaining groove 221, the first terminal group 61 is installed in place. The retaining portion 615 is used to restrict the first terminal group 61 from continuing to move forward.

[0026] Please see Figures 5 to 9A first window 231 extending along the wall thickness direction is provided on the side wall of the fixing block 2. A first limiting member 41 is formed at the first window 231 and is used to cooperate with the first terminal group 61. Please refer to Figure 3 and Figure 4 The first limiting member 41 includes a first connecting arm 411 distributed from the rear side of the first window 231 toward the front insertion direction. The first connecting arm 411 is connected to the rear end of the opening to form a fixed end, which is fixedly connected to the rear side of the first window 231. An elastic limiting end 4111 is formed at the front end of the first connecting arm 411 away from the fixed end. The first connecting arm 411 is flush with the inner side of the insertion cavity 22 along the wall thickness direction without affecting the passage of the first terminal group 61. The elastic limiting end 4111 is bent outward along the wall thickness direction after tilting inward and forward from the first connecting arm 411, so that the elastic limiting end 4111 has a hook-shaped structure with a first end face facing the front side of the first window 231, a second end face facing the insertion cavity 22 inward along the wall thickness direction, an inclined surface close to the first connecting arm 411, and a third end face facing the outer shell 1 outward along the wall thickness direction. The elastic limiting end 4111 is integrally formed with the fixing block 2 and has a certain elasticity and deformation capability. The elastic limiting end 4111 can deform inward or outward along the thickness direction of the side wall where the fixing block 2 is located. The elastic limiting end 4111 has a first limiting surface 412 distributed along the wall thickness direction and a second limiting surface 413 disposed opposite the inner wall of the outer shell 1. In one embodiment, the second end surface is configured as the first limiting surface 412 and the third end surface is configured as the second limiting surface 413. After the first terminal group 61 is inserted into the insertion cavity 22, the first limiting surface 412 is used to press the first mating member 51 inward, and the second limiting surface 413 is used to press the inner wall of the first inner cavity 111 outward, that is, the second limiting surface 413 is used to press the inner ring shell 12 outward, so that the first limiting member 41 presses the first terminal group 61 against the insertion cavity 22 by pressing against the inner ring shell 12 and the first terminal group 61.

[0027] In another embodiment, a latch is provided at the position of the elastic limiting end 4111 corresponding to the position of the first mating member 51, that is, between the second end face and the first end face of the elastic limiting end 4111. The latch is L-shaped and has two side edges or two faces that respectively connect the first end face and the second end face. The side edge of the latch facing outward along the wall thickness direction is configured as the first limiting surface 412, and the third end face is also configured as the second limiting surface 413, so that the first limiting surface 412 is pressed inward on the first mating member 51, and the second limiting surface 413 is kept in a state of abutting against the inner wall of the inner ring shell 12. The first limiting surface 412 and the inner wall of the inner ring shell 12 limit the elastic limiting end 4111 from the inside and outside direction to prevent the elastic limiting end 4111 from disengaging from the first mating member 51. The edge of the latch 131 that is distributed rearward along the insertion direction is configured as a third limiting surface 414. The third limiting surface 414 is used to abut against the first mating member 51 from the rear side to limit the rearward movement of the first terminal group 61.

[0028] Please see Figures 5 to 9 The outer ring shell 613 is configured as a first mating member 51, wherein the first mating member 51 has a first abutting surface 511 that abuts against the first limiting surface 412 after the terminal assembly is inserted into place, and a second abutting surface 512 that is disposed rearwardly corresponding to the third limiting surface 414 and abuts against the third limiting surface 414. The first abutting surface 511 is the outer wall surface of the outer ring shell 613 facing outward along the wall thickness direction, and the second abutting surface 512 is the rear end surface of the outer ring shell 613. When the fixing block 2 carrying the first terminal group 61 is assembled into the first inner cavity 111, the inner wall of the first inner cavity 111 abuts against the second limiting surface 413, thereby keeping the first limiting surface 412 abutting against the first abutting surface 511 and preventing the elastic limiting end 4111 from moving outward along the wall thickness direction; at the same time, the second abutting surface 512 abuts against the third limiting surface 414 rearward, preventing the first terminal group 61 from moving backward along the insertion direction, while relying solely on the first limiting member 41, without adding other... In this structural configuration, the positional relationship and cooperation of the first limiting surface 412, the second limiting surface 413, and the third limiting surface 414 maintain a locked state on the first terminal group 61 in the insertion direction and the side wall thickness direction where the first window 231 is located. Simultaneously, the first limiting member 41 is pressed against the inner wall of the first terminal group 61 and the first inner cavity 111, thus maintaining the lock on the first terminal group 61 and preventing any further changes in its state. This ensures the locking and fixation of the first terminal group 61. Furthermore, the design of the first limiting member 41 optimizes the internal structure, achieving multiple locking without adding additional structures, reducing the overall space required for the connector, and enabling the connector to move towards miniaturization and thinner designs.

[0029] In order to reduce the impact of the structure outside the outer ring shell 613 of the first terminal group 61 on the first limiting member 41, an inwardly recessed clearance space 614 is formed on the outer wall of the first insertion end 611 of the first terminal group 61 and at the position corresponding to the first limiting member 41 on the rear side of the outer ring shell 613. When the first terminal group 61 is inserted into the insertion cavity 22 and the first limiting member 41, the first mating member 51 and the inner wall of the first inner cavity 111 cooperate with each other to lock the first terminal group 61, the first limiting member 41 faces inward directly towards the clearance space 614.

[0030] Please see Figure 10 The front component 3 is made of plastic and also has a square frame structure. The inner side of the front component 3 is hollow and communicates with the front and rear sides along the insertion direction so that the exposed part 21 can be inserted into the inner cavity of the front component 3, and the front component 3 is fitted onto the outer wall of the exposed part 21. The front component 3 includes a first sleeve segment 31 and a second sleeve segment 32 distributed along the insertion direction, with the first sleeve segment 31 facing rearward and the second sleeve segment 32 facing forward. The inner cavity of the first sleeve segment 31 is adapted to the inner ring shell 12 so that the first sleeve segment 31 can be fitted onto the inner ring shell 12 along the insertion direction, so that the front component 3 is fitted outside the first inner cavity 111 and located in the third inner cavity 113. The inner cavity of the second sleeve 32 protrudes inward relative to the inner cavity of the first sleeve 31 and is narrower than the inner cavity of the first sleeve 31. The inner cavity of the second sleeve 32 is adapted to the shape and size of the exposed portion 21 so that the exposed portion 21 can be inserted into the inner cavity of the second sleeve 32. The second sleeve 32 is fitted onto the outer wall of the exposed portion 21, thus enclosing the exposed portion 21 inside. Due to the presence of the limiting stop 16, the inner wall of the second sleeve 32 is adapted to the exposed portion 21. Therefore, the front end face of the inner wall of the second sleeve 32 can abut against the limiting stop 16, so that the limiting stop 16 can limit the insertion depth of the front member 3. To enhance the bonding force between the front component 3 and the complementary connector, multiple second side grooves 33 are recessed on the outer walls of each side of the second sleeve 32. Each second side groove 33 is open outward and extends forward through the front end face of the front component 3 in the insertion direction. The second side grooves 33 are square to facilitate the insertion of the complementary connector into the second side grooves 33 in the insertion direction, thereby increasing the bonding force with the front component 3 and improving stability and robustness. Guide blocks 34 are provided on the inner wall of the second sleeve 32 at positions corresponding to each first side groove 211. Each guide block 34 and each first side groove 211 are strip-shaped and distributed in the insertion direction. Each guide block 34 protrudes inward relative to the inner wall of the second sleeve 32, so that when the front component 3 is fitted onto the inner ring shell 12 and the exposed portion 21, each guide block 34 can slide into each first side groove 211 in the insertion direction, thereby increasing the bonding force between the front component 3 and the exposed portion 21 and improving stability.

[0031] At least one third side groove 35 is provided on each of the four inner walls of the second segment 32, with the third side groove 35 facing inward and open to the front. As one embodiment, two to three third side grooves 35 are provided on each of the two inner walls of the second segment 32 along the first direction, and one third side groove 35 is provided on each of the two inner walls of the second segment 32 along the second direction and located in the middle position. In order to ensure the strength of the front component 3, the third side grooves 35, the second side grooves 33 and the guide blocks 34 are staggered and do not overlap each other.

[0032] Please see Figures 10 to 15 The second limiting member 42 is provided in a one-to-one correspondence with the third side groove 35. Each third side groove 35 is provided with a second limiting member 42. After the front component 3 is fitted onto the outer wall of the first inner cavity 111 and the outer periphery of the exposed part 21, the second limiting member 42 is located outside the front end of the first inner cavity 111.

[0033] The second limiting member 42 includes a second connecting arm 421 and a third connecting arm 422. One end of the second connecting arm 421 is connected to the inner wall surface of the third side groove 35, and the other end of the second connecting arm 421 extends inward. The second connecting arm 421 is formed on the rear end face of the inner cavity of the second sleeve segment 32 and is integrally formed and flush with the rear end face of the second inner cavity 112. The rear end face of the second connecting arm 421 forms a fourth limiting surface 423 for abutting against the front end face of the inner ring shell 12. The rear end of the third connecting arm 422 is connected to the second connecting arm 421, and the front end of the third connecting arm 422 extends forward along the insertion direction. The front end of the third connecting arm 422 is inclined inward and forward to form a first inclined segment 4221, and the front end face of the first inclined segment 4221 is arranged perpendicular to the insertion direction to form a fifth limiting surface 424. A first clearance cavity 425 is provided between the third connecting arm 422 and the third side groove 35 to allow space for the third connecting arm 422. The entire second limiting member 42 is integrally formed with the front member 3 and is made of plastic. Therefore, the second limiting member 42, which has a certain length, has the ability to deform after being squeezed and to return to its original position after the force is released. The first clearance cavity 425 provides space for the third connecting arm 422 to deform. The fourth limiting surface 423 is configured as a rearward limiting part, and the first limiting member 41 is configured as a frontward limiting part, so that the second limiting member 42 includes rearward limiting parts and frontward limiting parts that are spaced apart along the direction.

[0034] Please see Figure 13 and Figure 15The front end face of the limiting stop 16 is defined as the third abutment surface 523. To ensure that the second limiting member 42 does not interfere with the installation of the front member 3, the second connecting arm 421 and the third connecting arm 422 are flush with the inward-facing side of the corresponding sidewall of the front member 3 in the wall thickness direction, while the first inclined section 4221 protrudes inward. After the front member 3 is fitted onto the inner ring shell 12 and the exposed portion 21, the inward-facing side of the second connecting arm 421 and the third connecting arm 422 in the wall thickness direction is flush with the inner side of the limiting stop 16, and the exposed portion 21, which can pass through the inner side of the limiting stop 16, can also enter the inner cavity of the second sleeve 32. To facilitate the entry of the first inclined section 4221 into the second sleeve 32, a fourth side groove 521 is provided at the position of the exposed portion 21 corresponding to the second limiting member 42, with the fourth side groove 521 facing inward and open forward. The second mating member 52 includes a mating protrusion 522 protruding from the fourth side groove 521 on the outer wall of the exposed portion 21. The first side groove 211 is located at the front opening of the fourth side groove 521. The rear end face of the mating protrusion 522 forms a fourth abutting surface 524 perpendicular to the insertion direction. The convex surface 5221 of the mating protrusion 522 is inclined rearward and outward so that the first mating part is inclined on the front side of the fourth side groove 521, so that the inclined first inclined segment 4221 can be mated with it and squeezed to deform the first inclined segment 4221 toward the third side groove 35 until the first inclined segment 4221 enters the fourth side groove 521 through the mating protrusion 522. At this time, the fourth limiting surface 423 abuts against the third abutting surface 523, and the fifth limiting surface 424 abuts against the fourth abutting surface 524. Specifically, the third abutment surface 523 on the limiting stop edge 16 is configured as a rearward mating part, and the fourth abutment surface 524 is configured as a forward mating part, so that the second mating member 52 includes a rearward mating part disposed on the outer shell 1 and used to cooperate with the rearward limiting part to restrict the rearward movement of the front member 3, and a forward mating part disposed on the exposed part 21 and used to cooperate with the forward limiting part to restrict the forward movement of the front member 3 and restrict the rearward movement of the fixing block 2.

[0035] In use, the first segment 31 of the front component 3 is gradually fitted onto the inner ring shell 12. During the fitting of the second segment 32 onto the exposed portion 21, the guide block 34 is inserted into the first side groove 211 to ensure accurate engagement between the front component 3 and the exposed portion 21. The second connecting arm 421 passes through the convex surface 5221 of the mating protrusion 522. The inclined first segment 4221 gradually approaches the convex surface 5221 from front to back and is then squeezed by the convex surface 5221, deforming towards the first clearance cavity 425 until the first inclined segment 4221 enters the fourth side groove 521. At this point, the second... The fourth limiting surface 423 of the connecting arm 421 abuts against the fourth limiting surface 423 on the limiting stop 16, while the inner wall of the first sleeve 31 fits against the inner ring shell 12 to restrict the front member 3 from rotating. The fifth limiting surface 424 of the third connecting arm 422 abuts against the fourth abutting surface 524, so that the entire second limiting member 42 tensions the exposed part 21, the fixing block 2, and the inner ring shell 12 in the forward and backward directions respectively, thereby securing and locking the fixing block 2, the inner ring shell 12, and the front member 3 in a tight state, making the connection between the fixing block 2 and the outer shell 1 more secure. After the front member 3 is fitted onto the inner ring shell 12 and the exposed part 21, space is still reserved between the front member 3 and the third inner cavity 113 for the complementary connector to be inserted. Furthermore, an annular space is left between the rear end face of the front component 3 and the outer wall of the inner ring shell 12. Before the front component 3 is installed, the sealing ring 11 is fitted on the rear side of the inner ring shell 12. After the front component 3 is installed in the inner ring shell 12, it abuts against the sealing ring 11 to ensure the sealing between the front component 3 and the inner ring shell 12.

[0036] In another embodiment, the second mating member 52 is a groove correspondingly recessed on the outer wall of the exposed portion 21, the rear end face of the groove extends to the fixing block 2, and the front end face of the groove forms a fourth abutment surface 524. An inclined groove is formed on the front side of the exposed portion 21 located outside the groove to guide the first inclined segment 4221.

[0037] Please see Figure 16 and Figure 18A third limiting member 43 is disposed on the fixing block 2 and is used to cooperate with the second terminal group 62 to lock the second terminal group 62. A second window 232 is provided on the side wall of the fixing block 2 corresponding to the insertion cavity 22 where the second terminal group 62 is located, penetrating the insertion cavity 22 along the wall thickness direction. The second windows 232 are distributed on both sides of the fixing block 2 along a first direction. Since the second windows 232 are only provided on the two sides, the wall thickness direction here is the first direction. The third limiting member 43 is disposed at the second window 232. The number of third limiting members 43 is the same as the number of second terminal groups 62. Since the second terminal group 62 is arranged in two rows, the third limiting member 43 and the second window 232 are both arranged in two rows and distributed on both sides of the fixing block 2. Each second window 232 penetrates the outer wall of the fixing block 2 along the first direction and connects to the insertion cavity 22.

[0038] The third limiting member 43 includes a fourth connecting arm 431 connected to the rear side of the second window 232 at its rear end and a fifth connecting arm 432 connected to the front side of the second window 232 at its front end. Both the fourth and fifth connecting arms 431 are located at the center of the second window 232 and extend towards each other. The rear end of the fourth connecting arm 431 is fixed to the second window 232, and the front end of the fourth connecting arm 431 is inclined forward and inward, forming a second inclined segment 4311. In this embodiment, the front end surface of the second inclined segment 4311 forms a sixth limiting surface 433, which is distributed perpendicular to the insertion direction. The side of the second inclined segment 4311 facing inward along the wall thickness direction is parallel to the insertion direction and forms an eighth limiting surface 435. The fourth connecting arm 431 and the second inclined segment 4311 have a straight surface and an inclined surface on the side facing outward along the wall thickness direction. Both the flat and inclined surfaces are distributed on both sides of the fourth connecting arm 431 along the wall thickness direction, along with the eighth limiting surface 435. The eighth limiting surface 435 is flush with the forward-facing portion of the insertion cavity 22, which widens from the rear side of the fourth connecting arm 431 to facilitate the installation of the second terminal group 62. A space is left between the eighth limiting surface 435 and the second window 232 to allow the fourth connecting arm 431 to deform outwards or inwards along the wall thickness direction. Thus, when the second terminal group 62 is inserted into the insertion cavity 22 along the insertion direction, the outer wall of the second terminal group 62 can move the second inclined section 4311 of the fourth connecting arm 431 towards the second window 232 by pressing against it. The fifth connecting arm 432 extends rearwards towards the fourth connecting arm 431 along the insertion direction. The rear end face of the fifth connecting arm 432 is parallel to and spaced apart from the sixth limiting surface 433. The fifth connecting arm 432 has an inwardly facing inner wall surface that forms part of the insertion cavity 22 and is flush with the eighth limiting surface 435. A seventh limiting surface 434, which is forward-facing and inwardly inclined, is formed on the rear side of the inner wall surface of the fifth connecting arm 432 to hold the third mating member 53 on the second terminal group 62. The seventh limiting surface 434 causes the insertion cavity 22 to gradually narrow from back to front along the insertion direction. The inclined seventh limiting surface 434 allows the second terminal group 62 to move in a first direction away from the second window 232 when it abuts against it in the insertion direction, via the first mating member 51. This restricts the forward movement of the second terminal group 62 while also restraining it in the first direction, thereby locking the second terminal group 62 through a wedge fit. In another embodiment, the rear end face of the fifth connecting arm 432 can be the seventh limiting surface 434, used to hold the third mating member 53 along the insertion direction and restrict the forward movement of the second terminal group 62. The outer wall surface of the fifth connecting arm 432 is located on the side facing outward along the wall thickness direction. In this embodiment, the outer wall surface of the fifth connecting arm 432, the straight part and the inclined part of the fourth connecting arm 431 are configured together as the ninth limiting surface 436.There is a space between the ninth limiting surface 436, i.e. the outward side of the fourth connecting arm 431 and the fifth connecting arm 432, and the second window 232, so as to provide installation space for the fourth mating part 54.

[0039] Please see Figure 16 and Figure 18 The third mating component 53 includes a protruding ring 531 protruding from the outer wall of the second connecting end 622 of the second terminal group 62. The protruding ring 531 is arranged circumferentially around the outer wall of the second connecting end 622, and the outer diameter of the protruding ring 531 is adapted to the diameter of the insertion cavity 22 so that it can be inserted into the insertion cavity 22 in the insertion direction. The rear end face of the protruding ring 531 is configured as the fifth abutment surface 532, and the front end face of the protruding ring 531 is configured as the sixth abutment surface 533. The fifth abutment surface 532 is used to abut against the sixth limiting surface 433 to restrict the second terminal group 62 from moving backward. The sixth abutment surface 533 is used to abut against the seventh limiting surface 434 to restrict the second terminal group 62 from moving forward. A space is left between the sixth limiting surface 433 and the seventh limiting surface 434 for the protruding ring 531 to pass through, so that the protruding ring 531 is locked by the restriction of the sixth limiting surface 433 and the seventh limiting surface 434, thereby restricting the movement of the second terminal group 62 in the insertion direction. At the same time, the inclined seventh limiting surface 434 can also ensure the movement of the second terminal group 62 along the first direction. In order to increase the limiting of the second terminal group 62 in the first direction and to limit the second terminal group 62 from both sides of the protruding ring 531, the second connecting end 622 of the second terminal group 62 has a mating section 5221. The protruding ring 531 is formed on the outer wall of the mating section 5221. The portion of the outer wall of the mating section 5221 located behind the protruding ring 531 is configured as a seventh abutting surface 534 for abutting against the eighth limiting surface 435, so that the third mating member 53 is used to cooperate with the third limiting member 43 to prevent the second terminal group 62 from moving in the insertion direction. Alternatively, the inner wall of the fifth connecting arm 432 can abut against the outer wall of the mating section 5221.

[0040] Please see Figure 17 and Figure 20After the fourth mating member 54 is inserted into the second window 232 and the fixing block 2 is installed in the first inner cavity 111 of the inner ring shell 12, the inner wall of the first inner cavity 111 presses against the fourth mating member 54 so that the fourth mating member 54 keeps the third limiting member 43 in a limiting engagement state with the third mating member 53. In order to simplify the operation and structure, each second window 232 is interconnected in the second direction, and multiple fourth mating members 54 are set to correspond one-to-one with each third limiting member 43. The multiple fourth mating members 54 are integrally connected along the second direction to form a whole, so that they can be installed in each of the second windows 232 at once, thereby completing the engagement between all the fourth mating members 54 and the third limiting members 43 in one operation. Each of the fourth mating parts 54 includes a limiting plug 541 with a limiting end 543. Each limiting plug 541 is integrally connected. The limiting plug 541 is consistent with the shape of the space enclosed by the ninth limiting surface 436 and the second window 232 and can be inserted therein. The outer wall surface of the limiting plug 541 inserted into the second window 232, facing outward along the wall thickness direction or the first direction, is preferably flush with the outer wall surface of the fixing block 2, so that when the fixing block 2 is inserted into the first inner cavity 111, the inner wall of the first inner cavity 111 presses the limiting plug 541. The inner wall surface of the limiting block 541 along the first direction is adapted to the ninth limiting surface 436 to form an eighth abutment surface 542. After the limiting block 541 is inserted into the second window 232 and pressed by the inner wall of the first inner cavity 111, the eighth abutment surface 542 abuts against the ninth limiting surface 436, so that the eighth limiting surface 435 abuts against the seventh abutment surface 534, so as to provide support for the elastic and deformable fourth connecting arm 431 and fifth connecting arm 432, thereby locking the second terminal group 62 in the insertion direction and the first direction, thus completing the locking of the second terminal group 62 and positioning the second terminal group 62 in all directions.

[0041] Multiple limiting ends 543 protrude along a first direction on the limiting insert 541. Adjacent limiting ends 543 are spaced apart and form clamping spaces between them. The number of clamping spaces is the same as the number of insertion cavities 22. Clamping surfaces 5431 are formed on the opposing sides of adjacent limiting ends 543, and a tenth limiting surface 544 parallel to the fifth abutment surface is formed on the forward side of each limiting end 543 along the insertion direction. When the limiting insert 541 is inserted into the second window 232, each limiting end 543 passes along the first direction from both sides of each second terminal group 62 along the second direction. The clamping surface 5431 abuts against the seventh abutting surface 534, and the tenth limiting surface 544 abuts against the fifth abutting surface 532. This allows the fifth abutting surface 532 to form three support positions through the mutual abutment of the sixth limiting surface 433 and the tenth limiting surfaces 544 on both sides. This forms a triangular support for the fifth abutting surface 532, improving the pressing stability of the convex ring 531, preventing the pressing force from concentrating on one side, and making the force acting on the convex ring 531 more uniform, thereby improving the service life and the bonding force and stability of the second terminal group 62.

[0042] Please see Figure 2 and Figure 6 The shape of the sealing gasket 7 is adapted to the second inner cavity 112 and is sealed and installed inside the sealing gasket 7. Multiple sockets 71 are formed on the sealing gasket 7, which correspond one-to-one with the positions of the plug cavity 22. Each cable 63 of the terminal assembly passes through the socket 71 and exits the sealing gasket 7 and the outer shell 1.

[0043] Please see Figure 2 The sealing ring 11 is fitted on the outer wall of the inner ring shell 12 and is located on the rear side of the front component 3 after the front component 3 is installed. The rear end face of the front component 3 abuts against the sealing ring 11. When the complementary connector is inserted into the third inner cavity 113, the front component 3, the sealing ring 11 and the inner ring shell 12 are all located inside the complementary connector.

[0044] Please see Figure 1 , Figure 2 , Figure 22 and Figure 23The cable cover 8 is made of plastic and its front side is designed to fit around the periphery of the connecting side 13. The cable cover 8 has slots 81 on both sides along the first direction. Triangular buckles 131 protrude from the outer walls of both sides of the connecting side 13 along the first direction. The cable cover 8 is inserted from back to front, with its inner wall contacting the outer wall of the connecting side 13. The buckles 131 press against the inner wall of the cable cover 8 until it is engaged in the slots 81, thus completing the initial fixing of the cable cover 8. The cable cover 8 has an opening on one side along the second direction for the cable 63 to pass through or enter. To increase the limiting position of the wire cover 8 in the second direction, a triangular block 132 protrudes along the first direction on the outer wall of the connecting side 13. The triangular block 132 gradually narrows backward along the insertion direction. On the inner walls of both sides of the wire cover 8 along the first direction, triangular grooves 82 are formed corresponding to the triangular block 132. The triangular grooves 82 open forward along the insertion direction. While positioning the wire cover 8 in the second direction, the triangular block 132 and the triangular grooves 82 can also play a role in preventing mistakes and guiding the installation of the wire cover 8.

[0045] Please see Figure 2 , Figures 21 to 23 The wrench 9 is made of plastic and is U-shaped with two ends. The connecting part 91 is formed on both ends of the wrench 9. The connecting part 91 includes a circular wing plate 911 formed at the end of the wrench 9 and a toothed ring 912 coaxial with the inner side of the wing plate 911. The wing plate 911 has a through hole 913. The outer side of the through hole 913 is provided with a plurality of elastically engaging ring grooves to allow the wing plate 911 to be rotatably connected to the connecting post 152. The wrench 9 is mounted on the periphery of the wire cover 8 and can rotate in a circular shape with the connecting post 152 to press against the wire cover 8 or move away from the wire cover 8.

[0046] On both sides of the outer protrusions 14 of the outer casing 1, grooves 141 are formed along the second direction on one side, and both grooves 141 are inwardly connected to the first inner cavity 111. On the front and rear sides of the grooves 141, there are first openings 171 that allow a corresponding trigger part b on the outer wall of the complementary connector to enter the groove 141 when the outer casing 1 is inserted into the complementary connector, and second openings 172 that connect to the circular groove 151. The movable part 10 includes two sliders 101 respectively inserted into the two grooves 141. The rear sides of the two sliders 101 are provided with teeth 102 for passing through the second openings 172 to engage with the toothed ring 912 and drive the wrench 9 to rotate. Movable grooves 103 are formed on the sliders 101 that slide with the trigger part b when the complementary connector is inserted into the outer casing 1, causing the slider 101 to slide. After the complementary connector is inserted into place, the movable grooves 103 cause the wrench 9 to press against the wire cover 8. The movable groove 103 opens inward and forward to connect to the front end face of the outer casing 1. The two sliders 101 are slidably connected in the two sliding grooves 141 and have a first position and a second position relative to the sliding grooves 141. When the slider 101 moves to the first position, the movable groove 103 connects to the first opening 171. When the slider 101 moves to the second position, the movable groove 103 is offset from the first opening 171. The movable groove 103 includes a vertical groove section 1031 near the first opening 171 and having a wide opening side, an inclined groove section 1032 that is inclined from the vertical groove section 1031 toward the wire cover 8 to allow the trigger part b to push the slider 101 to move, and a straight groove section 1033 that is perpendicular to the vertical groove section 1031 to limit the movement of the trigger part b along the insertion direction. After the trigger part b of the complementary connector enters the inclined slot section 1032 from the vertical slot section 1031, the trigger part b pushes the slider 101 from the first position to the second position by squeezing the inclined slot section 1032, until the trigger part b moves into the flat slot section 1033, so that the wrench 9 is released from the slider 101 in the first position and the wrench 9 presses the wire cover 8 when the slider 101 is in the second position, thus completing the positioning of the wire cover 8. The outer wall of the connection side 13 has a first side 181 that supports the wrench 9 when it moves away from the wire cover 8 and a second side 182 that supports the wrench 9 when it contacts and presses the wire cover 8.

[0047] One assembly method of the electrical connector of this utility model is as follows: Step 1: Insert the terminal assembly into the insertion cavity from back to front along the insertion direction, so that the first mating member 51 presses against the first limiting member 41, causing the elastic limiting end 4111 to change shape and the first mating member 51 to continue moving forward until the first mating member 51 abuts against the second limiting member 42 along the insertion direction.

[0048] In step one, the first terminal group 61 and the second terminal group 62 are first passed through the socket 71 on the sealing plug, with the metal terminals facing forward and positioned outside the front of the sealing plug. The cable 63 is then passed into the socket 71. Next, the first terminal group 61 and the second terminal group 62 are inserted into their respective insertion cavities 22. The first terminal groups 61 and 62 are installed sequentially, or they can be inserted together into their corresponding insertion cavities 22 by the action of the sealing gasket 7. During insertion, the first mating member 51 of the first terminal group 61 engages with the first limiting member 41, and through mutual compression, the first limiting member 41 locks the first terminal group 61 in place. Similarly, the third mating member 53 of the second terminal group 62 engages with the third limiting member 43, and through mutual compression, the third limiting member 43 locks the second terminal group 62 in place. Then, the fourth mating part 54 is inserted into the second window 232 so that the limiting end 543 is inserted into the insertion cavity 22 and engages with the third mating part 53 and the third limiting part 43 to lock the mating position between the third limiting part 43 and the third mating part 53, making the fit tighter and more stable.

[0049] Step 2: Install the fixing block 2 with the terminal assembly inserted from back to front on the first housing 1 fixed on the fixture along the insertion direction, so that the fixing block 2 abuts against the limiting stop 16 and the exposed part 21 extends out of the first inner cavity 111. During this process, the elastic limiting end 4111 is abutted by the inner wall of the first inner cavity 111.

[0050] Step 3: Fit the front component 3 from front to back along the insertion direction onto the outer wall of the exposed part 21 and the first inner cavity 111, so that the second limiting member 42 and the second mating member 52 cooperate to lock and position the front component 3, the fixing block 2 and the first outer shell 1 together.

[0051] In steps two and three, the sealing ring 11 is first fitted onto the rear side of the outer wall of the inner ring shell 12. Then, the fixing block 2 and the front component 3 are installed from the front and rear sides of the outer shell 1, respectively or simultaneously. The fixing block 2 is inserted from the second inner cavity 112 into the first inner cavity 111 until the front end face of the fixing block 2 abuts against the limiting stop 16. At this time, the second limiting surface 413 of the first connecting arm 411 abuts against the inner wall of the first inner cavity 111 to lock the mating relationship between the first limiting member 41 and the first mating member 51, making the connection between the first terminal group 61 and the corresponding insertion cavity 22 tighter and more stable. The exposed portion 21 extends into the third inner cavity 113, and the sealing gasket 7 is installed in the second inner cavity 112 and abuts against the rear end face of the fixing block 2. The first segment 31 of the front component 3 is fitted onto the inner ring shell 12, and the second segment 32 is fitted onto the exposed portion 21, so that the second limiting member 42 abuts against the second mating member 52 and the limiting stop 16 respectively along the insertion direction, thereby tensioning the front component 3, the exposed portion 21 and the inner ring shell 12 together and locking the engagement between the second limiting member 42 and the second mating member 52, so that the fixing block 2 and the front component 3 are firmly installed on the outer shell 1. Next, the two sliders 101 are inserted into the groove 141 so that the sliders 101 are in the first position. Then, the wrench 9 is mounted on the housing 1 so that the through hole 913 is fitted onto the connecting post 152 and the wrench 9 is held against the first side 181. Finally, the wire cover 8 is installed on the connecting side 13 of the housing 1 so that the buckle 131 is engaged into the slot 81. Then, the trigger part b of the complementary connector cooperates with the movable groove 103 to drive the slider 101 to slide, so that the tooth part 102 and the toothed ring 912 are engaged. The wrench 9 rotates until the slider 101 moves to the second position, and the wrench 9 is pressed against the wire cover 8, thus completing the assembly of the entire electrical connector.

[0052] Compared with the prior art, the electrical connector of this utility model achieves omnidirectional limiting and locking between the fixing block 2 and the outer shell 1, between the fixing block 2 and the first terminal group 61, and between the fixing block 2 and the second terminal group 62 with a relatively simple structure. While ensuring the reliability and stability of the locking state, the setting of the limiting structure and each mating part is achieved by structural improvement or positional change on the original basis of the fixing block 2, the outer shell 1 and the front component 3. There is no need to add too many extra parts or structures, so that the material cost of the whole device is not increased, and the limiting effect and the bonding force are greatly improved, thereby maintaining the thinness of the entire electrical connector.

Claims

1. An electrical connector, characterized in that, include: A fixing block having a insertion cavity extending through both the front and rear sides in an insertion direction; The limiting structure includes a first limiting member disposed on the side wall of the fixing block. The first limiting member has an elastic limiting end, which can deform inward or outward along the thickness direction of the side wall. A terminal assembly is inserted into a insertion cavity along the insertion direction; a first mating member is provided on the outer wall of the terminal assembly to limit and cooperate with the first limiting member, thereby preventing the terminal assembly from moving along the insertion direction; The outer shell has a first inner cavity formed therein for mounting a fixing block, and the inner wall surface of the first inner cavity is used to abut the elastic limiting end inward to keep it in a limiting engagement state with the first mating member.

2. The electrical connector as described in claim 1, characterized in that: The elastic limiting end has a first limiting surface distributed along the wall thickness direction and a second limiting surface disposed on the inner wall facing the outer shell; the first mating member has a first abutting surface abutting against the first limiting surface after the terminal assembly is inserted into place; when the fixing block carries the terminal assembly into the first inner cavity, the inner wall of the first inner cavity abuts against the second limiting surface inward, thereby keeping the first limiting surface abutting against the first abutting surface and preventing the elastic limiting end from moving outward along the wall thickness direction.

3. The electrical connector as described in claim 2, characterized in that: The elastic limiting end is provided with a notch corresponding to the position of the first mating member. The rearward edge of the notch along the insertion direction is configured as the first limiting surface. The side edge of the notch perpendicularly connected to the outer end of the first limiting surface along the wall thickness direction is configured as the third limiting surface. The first mating member also has a second abutting surface corresponding to the third limiting surface and facing the inner wall of the shell. The second abutting surface abuts against the third limiting surface outward, so that the second limiting surface is kept in abutting against the inner wall of the shell. The third limiting surface and the inner wall of the shell limit the elastic limiting end from the inside and outside direction to prevent the elastic limiting end from disengaging from the first mating member.

4. The electrical connector as described in claim 2, characterized in that: A window extending along the wall thickness direction is provided on the side wall of the fixing block. The first limiting member is distributed along the insertion direction, and the end of the first limiting member away from the elastic limiting end is configured as a fixed end, which is fixed to the window rim. The second limiting surface of the elastic limiting end passes through the window and abuts against the inner wall of the outer shell.

5. The electrical connector as described in any one of claims 1 to 4, characterized in that: The outer wall of the terminal assembly has an inwardly recessed clearance space at the position corresponding to the first limiting member.

6. The electrical connector as claimed in claim 1, characterized in that: The terminal assembly includes a first terminal group and a second terminal group, which are arranged in an array layout.

7. The electrical connector as claimed in claim 1, characterized in that: It also includes a wire cover fastened to the rear end face of the housing, a wrench that is rotatably connected to both sides of the housing via two connecting parts to press the wire cover or move away from the wire cover, and a movable part that is movably mounted on the housing and drives the wrench to rotate by moving and engaging with the connecting parts.

8. The electrical connector as claimed in claim 7, characterized in that: The connecting part includes a wing plate formed at the end of the wrench and a toothed ring coaxial with the inner side of the wing plate. The movable part includes a slider movably disposed on the first plastic housing at the positions corresponding to the toothed rings on both sides. The slider is provided with teeth for meshing with the toothed ring to drive the wrench to rotate. The slider is formed with a movable groove that slides with the complementary connector when the board end connector is inserted into the first plastic housing to drive the slider to slide. The movable groove causes the wrench to press the wire cover after the board end connector is inserted into the position.

9. The electrical connector as claimed in claim 8, characterized in that: A circular groove is recessed on the outer wall of the outer shell at the position corresponding to the connecting part. A connecting post is protruding at the center of the circular groove. An annular groove is recessed along the circumference of the connecting post. A through hole is opened on the wing plate. Multiple elastically snapped into the annular groove are arranged around the outside of the through hole to allow the wing plate to rotate and be connected thereon.

10. The electrical connector as claimed in claim 7, characterized in that: The outer shell has a triangular block protruding from it, with its tip pointing towards the wire cover. The wire cover has a triangular groove that wedges with the triangular block along the insertion direction.

Images