Anti-oblique-insertion high-mechanical-stability high-frequency connector

Abstract

The invention provides an anti-oblique-insertion high-mechanical-stability high-frequency connector, which effectively avoids oblique insertion, ensures smooth butt joint of a contact pin and a jack, and remarkably improves the assembly efficiency and the connection reliability. And a complete shielding layer and impedance matching design is kept, high-frequency signal transmission as high as 20GHz is supported, and the performance is stable. The connector is a female end, and is characterized by comprising an integrated housing structure; a center terminal; the insulator comprises a front positioning cavity and a rear stripped cable positioning cavity, and the front positioning cavity is used for placing the central terminal; the integrated shell structure comprises an insulator positioning and placing cavity, a middle crimping part and a tail cable crimping part which are arranged on the front part in a manner of copying the shape of the insulator; and the insulator positioning and placing cavity, the middle crimping part and the tail cable crimping part are integrally manufactured to form an integral structure.

Description

Technical Field

[0001] This invention relates to the technical field of high-frequency connectors, specifically to a high-frequency connector with high mechanical stability and anti-misalignment. Background Technology

[0002] Automotive connectors are core components of automotive electrical systems, and their main functions are as follows: Conducting current: Transmitting electrical energy between various electronic control units, sensors, actuators, switches, lights, displays and other components of the vehicle; Signal transmission: Transmitting control signals and data signals (information communication) between in-vehicle electronic devices. For example, sensors transmit the information they detect to the control unit, and the control unit then transmits the instructions to the actuators. Simplified assembly: The complex wire harness is divided into multiple modular sub-wire harnesses, which are quickly spliced ​​together by connectors, greatly improving the assembly efficiency of the production line. Traditional connectors suffer from problems such as misaligned insertion, difficulty in blind insertion, and signal damage due to inaccurate terminal alignment. However, existing automotive connectors, especially high-frequency connectors, often suffer from misalignment of terminals, leading to problems such as misalignment, difficulty in blind insertion, and signal damage. Furthermore, the existing high-frequency connectors have a split shell structure, resulting in poor outer shielding performance. Moreover, the existing split shell structure cannot be designed for impedance matching, resulting in low return loss during high-frequency transmission. Therefore, there is an urgent need to develop a high-stability high-frequency connector that can prevent misalignment. Summary of the Invention

[0003] To address the aforementioned issues, this invention provides a high-frequency connector with high mechanical stability and anti-misalignment, which effectively prevents misalignment, ensures smooth connection between pins and sockets, significantly improves assembly efficiency and connection reliability, and maintains a complete shielding layer and impedance matching design, supporting high-frequency signal transmission up to 20GHz with stable performance.

[0004] A high-frequency connector with anti-misalignment and high mechanical stability, which is a female terminal, is characterized in that it comprises: One-piece shell structure; Center terminal; And an insulator, which includes a front positioning cavity and a rear stripped cable positioning cavity, wherein the front positioning cavity is used to place the center terminal; The integrated shell structure includes an insulator positioning cavity at the front, which is shaped like the shape of an insulator, a middle crimping component, and a tail cable crimping component. The insulator positioning cavity, the middle crimping component, and the tail cable crimping component are integrally manufactured to form an overall structure. The center terminal is placed in the front positioning cavity of the insulator. The inner wall of the front end of the insulator is provided with a tapered guide port corresponding to the center terminal socket. The central axis of the tapered guide port and the central axis of the center terminal are arranged coaxially. The insulator is fixedly arranged in the positioning cavity of the insulator. After the front part of the cable is stripped to expose the front conductor and the middle inner sheath, the front conductor is inserted into the rear end area of ​​the center terminal. The front end of the middle inner sheath is placed in the rear stripped cable positioning cavity of the insulator. The rear end of the middle inner sheath is fitted with a crimping ring. The middle crimping member wraps around and presses the outer circumference of the crimping ring. The tail cable crimping member wraps around and crimps the outer sheath of the cable.

[0005] Its further features are: The front positioning cavity is designed to be longer for fixing the center terminal, thereby achieving better coaxiality. An impedance matching area is provided on the outer periphery of the insulator positioning cavity. The rear end area of ​​the insulator positioning cavity consists of two sets of annular sleeves, including a front annular sleeve and a rear annular sleeve. The front annular sleeve corresponds to the crimping area of ​​the center terminal, which will not cause deformation of the middle section of the insulator and the area of ​​the center terminal, thus ensuring the integrity of high-frequency signal transmission. The insulator positioning cavity is formed by welding in a preset riveting area. All welding points are spaced apart on the same straight line, which makes the product strong and has a good shielding effect. The insulator positioning cavity is also provided with an integral stamped rib between the two sets of annular sleeves. When the high-frequency connector is placed inside the sheath, the integral stamped rib is embedded in the positioning notch annular groove of the sheath. The integral stamped rib provides the retaining force of the integral shell structure inside the sheath. Moreover, the integral stamped rib is an outward protruding structure relative to the two sets of annular sleeves and will not press against the insulator or the center terminal, so as not to affect the integrity of high-frequency signal transmission. The rear end of the middle crimping component has at least two stamped barbs arranged in the same circumferential position corresponding to the position of the crimping ring. After the middle crimping component wraps around the crimping ring, the stamped barbs hold the crimping ring in place, ensuring the wire harness holding force and impedance stability, thereby satisfying the integrity of high-frequency transmission. The connection area between the middle crimping connector and the tail cable crimping connector forms a concave locking point after the wrapping is completed. The concave locking point is used to reliably crimp the rear end of the crimping ring to ensure the wire harness holding force. The front end of the insulator positioning cavity forms a terminal plug-in port. The outer periphery of the terminal plug-in port is provided with several sets of plug-in protruding contacts. The several sets of plug-in protruding contacts form two sets of equivalent plug-in rings arranged at intervals along the axial length. Each set of equivalent plug-in rings includes at least three plug-in protruding contacts. Preferably, the outer periphery of the terminal plug-in port is provided with six sets of plug-in protruding contacts. The six sets of plug-in protruding contacts are arranged at equal intervals along the outer periphery to form a front equivalent plug-in ring and a rear equivalent plug-in ring. The three plug-in protruding points corresponding to each set of equivalent plug-in rings are set at equal angular intervals. This design allows the terminal to have two sets of contact points, one in front and one behind. During plugging, three plug-in protruding contacts are contacted first, and then another three plug-in protruding contacts are contacted during the plugging process, for a total of six plug-in protruding contacts. This ensures a low contact resistance electrical connection and stable contact under mechanical vibration, while also ensuring a good plugging feel. The two ends of the wrapping arc of the central crimping member are provided with a first alignment structure; The tail cable crimping component has a second alignment structure at both ends of the arc direction of the wrapping. Both the first and second alignment structures are contoured grooves and protrusions to ensure accurate and reliable wrapping. It meets the 20GHz transmission frequency requirement, and its return loss parameters are as follows: 0~3GHz: <-26db; 4–6 GHz: < -21 dB; 7–12 GHz: < -16 dB; 12–15 GHz: < -13 dB; 15~20GHz: <-10db.

[0006] With this invention, the inner wall of the insulator's front end has a tapered guide opening corresponding to the center terminal socket. The central axis of the tapered guide opening and the central axis of the center terminal are coaxially arranged. During docking, the male terminal contacts the tapered opening first, automatically correcting the central axis position and achieving physical forced alignment. This structure effectively eliminates oblique insertion, ensuring smooth docking of the pins and sockets, significantly improving assembly efficiency and connection reliability. Furthermore, the integrated shell structure includes an insulator positioning cavity at the front, a middle crimping component, and a tail cable crimping component, all conforming to the shape of the insulator. The insulator positioning cavity, middle crimping component, and tail cable crimping component are integrally formed, maintaining a complete shielding layer and impedance matching design. It supports high-frequency signal transmission up to 20GHz with stable performance, making it particularly suitable for high-speed data connection scenarios such as cameras and radars in automotive ADAS systems. Attached Figure Description

[0007] Figure 1 This is a partial cross-sectional view of the main view of the present invention; Figure 2 This is a three-dimensional schematic diagram of the integrated outer shell structure of the present invention without wrapping. Figure 3 This is an exploded view of the integrated housing structure, insulator, and cable of the present invention before assembly. Figure 4This is a partial cross-sectional view of the integrated housing structure and sheath assembly of the present invention; Figure 5 This is a schematic diagram showing the integrated housing, crimping ring, and cable of the present invention wrapped around (not fully wrapped). Figure 6 for Figure 1 The right view; Figure 7 This is a schematic diagram of the simulation results of signal transmission using the structure of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the simulation results of signal transmission using the structure of the present invention. Figure 2 ; The names corresponding to the serial numbers in the diagram are as follows: 10. Integrated shell structure, 11. Insulator positioning cavity, 1101. Impedance matching area, 111. Front annular sleeve, 112. Rear annular sleeve, 113. Welding point, 114. Integrated stamped rib, 115. Terminal plug-in port, 12. Middle crimping part, 121. Stamped barb, 122. First alignment structure, 13. Tail cable crimping part, 13. Second alignment structure, 131. Concave locking point, 14. Center terminal, 20. Insulator, 30. Conical guide port, 301. Front positioning cavity, 31. Fixing area, 311. Rear stripped cable positioning cavity, 32. Cable, 40. Front conductor, 41. Middle inner sheath, 42. Crimping ring, 50. Sheath, 60. Positioning notch groove, 61. Plug-in protruding contact 1, spring 2, front equivalent plug ring 3, rear equivalent plug ring 4. Detailed Implementation

[0008] A high-frequency connector with anti-misalignment and high mechanical stability, which is a female terminal, see... Figures 1-6 It includes an integrated housing structure 10, a central terminal 20, and an insulator 30; The insulator 30 includes a front positioning cavity 31 and a rear stripped cable positioning cavity 32. The front positioning cavity 31 is used to place the center terminal 20. The integrated shell structure 10 includes an insulator positioning cavity 11 at the front, which is shaped like the shape of an insulator, a middle crimping component 12, and a tail cable crimping component 13. The insulator positioning cavity 11, the middle crimping component 12, and the tail cable crimping component 13 are integrally manufactured to form an overall structure. The center terminal 20 is placed in the front positioning cavity 31 of the insulator 30. The inner wall of the front end of the insulator 30 is provided with a tapered guide port 301 corresponding to the insertion port of the center terminal 20. The central axis of the tapered guide port 301 is arranged coaxially with the central axis of the center terminal 20. The insulator 30 is fixedly arranged in the insulator positioning cavity 31. After the front end of the cable 40 is stripped to expose the front conductor 41 and the middle inner sheath 42, the front conductor 41 is inserted into the rear end area of ​​the center terminal 20. The front end of the middle inner sheath 42 is placed in the rear stripped cable positioning cavity 32 of the insulator 30. The rear end of the middle inner sheath 42 is fitted with a crimping ring 50. The middle crimping member 12 wraps around and fixes the outer circumference of the crimping ring 50. The tail cable crimping member 13 wraps around and crimps the outer sheath of the cable 40.

[0009] In a specific embodiment, the front positioning cavity 31 is designed to lengthen the fixing area 311 of the positioning center terminal 20, thereby achieving better coaxiality.

[0010] In a specific embodiment, an impedance matching region 1101 is provided on the outer periphery of the insulator positioning cavity 11. The rear end region of the insulator positioning cavity 11 consists of two sets of annular sleeves, including a front annular sleeve 111 and a rear annular sleeve 112. The front annular sleeve 111 corresponds to the crimping area of ​​the center terminal 20, which will not cause deformation of the middle section of the insulator and the area of ​​the center terminal 20, thus ensuring the integrity of high-frequency signal transmission.

[0011] In practice, the insulator positioning cavity 11 is formed by welding in a pre-set riveting area, and all welding points 113 are arranged at intervals on the same straight line, which makes the product strong and has a good shielding effect.

[0012] In specific implementation, the insulator positioning cavity 11 is also provided with an integral stamped rib 114 between the two sets of annular sleeves. When the high-frequency connector is placed inside the sheath 60, the integral stamped rib 114 is embedded in the positioning notch annular groove 61 of the sheath 60. The integral stamped rib provides the retaining force of the integral shell structure 10 inside the sheath 60. Moreover, the integral stamped rib 114 is an outward protruding structure relative to the two sets of annular sleeves, and will not press against the insulator or the center terminal, so as not to affect the integrity of high-frequency signal transmission.

[0013] In a specific embodiment, the rear end of the middle crimping member 12 is located at the same circumferential position as the crimping ring 50, and two stamped barbs 121 are arranged around it. After the middle crimping member 12 wraps around the crimping ring 50, the stamped barbs 121 hold the crimping ring 50 to ensure the wire harness holding force and impedance stability, thereby satisfying the integrity of high-frequency transmission. The connection area between the middle crimping connector 12 and the tail cable crimping connector 13 forms a concave locking point 14 after the wrapping is completed. The concave locking point 14 is used to reliably crimp the rear end of the crimping ring 50 to ensure the wire harness holding force.

[0014] In specific implementation, the front end of the insulator positioning cavity 11 forms a terminal plug-in port 115. The outer periphery of the terminal plug-in port is provided with several sets of plug-in protruding contacts 1. The several sets of plug-in protruding contacts 1 form two sets of equivalent plug-in rings arranged at intervals along the axial length. Each set of equivalent plug-in rings includes at least three plug-in protruding contacts 1. Each plug-in protruding contact 1 is provided on the spring piece 2, and there is a circumferential gap between adjacent spring pieces 2.

[0015] In a specific embodiment, the outer periphery of the terminal plug-in port 115 is provided with six sets of plug-in protruding contacts 1. The six sets of plug-in protruding contacts 1 are arranged at equal intervals along the outer periphery, forming a front equivalent plug-in ring 3 and a rear equivalent plug-in ring 4. The three plug-in protruding points 1 corresponding to each set of equivalent plug-in rings are set at equal angular intervals. This design allows the terminal contact points to be designed in two sets, front and rear. During insertion, the three plug-in protruding contacts 1 of the front equivalent plug-in ring 3 are contacted first, and then the three plug-in protruding contacts 1 of the rear equivalent plug-in ring 4 are contacted during the insertion process, for a total of 6 plug-in protruding contacts 1. This ensures electrical connection with low contact resistance and stable contact under mechanical vibration, while also ensuring a good insertion feel. Existing plug-in structures generally consist of 6 plug-in protruding contacts arranged in a ring to form an equivalent plug-in ring. The greater the contact force, the greater the insertion and extraction force, which makes insertion and extraction relatively difficult.

[0016] In a specific embodiment, the two ends of the wrapping arc direction of the central pressing member 12 are provided with a first alignment structure 122; The tail cable crimping component 13 has a second alignment structure 131 at both ends of the arc direction of the wrapping. The first alignment structure 122 and the second alignment structure 131 are both contoured groove and protrusion structures to ensure accurate and reliable wrapping.

[0017] The simulation results of signal transmission for the high-frequency connector fabricated using the above structure are shown below. Figures 7-8 Its transmission frequency is within the 20GHz range, and the return loss parameters are as follows: 0~3GHz: <-26db; 4–6 GHz: < -21 dB; 7–12 GHz: < -16 dB; 12–15 GHz: < -13 dB; 15~20GHz: <-10db.

[0018] The principle is as follows: The inner wall of the insulator's front end has a tapered guide port corresponding to the center terminal socket. The central axis of the tapered guide port and the central axis of the center terminal are coaxially arranged. During docking, the male terminal contacts the tapered port first, automatically correcting the central axis position and achieving physical forced alignment. This structure effectively eliminates oblique insertion, ensuring smooth docking of the pin and socket, significantly improving assembly efficiency and connection reliability. Furthermore, the insulator positioning cavity of the integrated shell structure is formed by welding in a pre-set riveting area, with all welding points arranged on the same straight line, ensuring product strength and shielding effect. The insulator positioning cavity of the integrated shell structure also features an impedance matching area, ensuring the integrity of high-frequency signal transmission. It supports high-frequency signal transmission up to 20GHz and has stable performance, making it particularly suitable for high-speed data connection scenarios such as automotive ADAS system cameras and radar.

[0019] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0020] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-frequency connector with anti-misalignment and high mechanical stability, wherein the female end is characterized in that, It includes: One-piece shell structure; Center terminal; And an insulator, which includes a front positioning cavity and a rear stripped cable positioning cavity, wherein the front positioning cavity is used to place the center terminal; The integrated shell structure includes an insulator positioning cavity at the front, which is shaped like the shape of an insulator, a middle crimping component, and a tail cable crimping component. The insulator positioning cavity, the middle crimping component, and the tail cable crimping component are integrally manufactured to form an overall structure. The center terminal is placed in the front positioning cavity of the insulator. The inner wall of the front end of the insulator is provided with a tapered guide port corresponding to the center terminal socket. The central axis of the tapered guide port and the central axis of the center terminal are arranged coaxially. The insulator is fixedly arranged in the positioning cavity of the insulator. After the front part of the cable is stripped to expose the front conductor and the middle inner sheath, the front conductor is inserted into the rear end area of ​​the center terminal. The front end of the middle inner sheath is placed in the rear stripped cable positioning cavity of the insulator. The rear end of the middle inner sheath is fitted with a crimping ring. The middle crimping member wraps around and presses the outer circumference of the crimping ring. The tail cable crimping member wraps around and crimps the outer sheath of the cable.

2. The high-frequency connector with anti-misalignment and high mechanical stability according to claim 1, characterized in that: The front positioning cavity is designed to extend the fixing area of ​​the positioning center terminal.

3. The high-frequency connector with anti-misalignment and high mechanical stability according to claim 1, characterized in that: An impedance matching area is provided on the outer periphery of the insulator positioning cavity. The rear end region of the insulator positioning cavity consists of two sets of annular sleeves, including a front annular sleeve and a rear annular sleeve. The front annular sleeve corresponds to the crimping area of ​​the center terminal.

4. The high-frequency connector with anti-misalignment and high mechanical stability according to claim 1, characterized in that: The insulator positioning cavity is formed by welding in a preset riveting area, with all welding points spaced apart on the same straight line.

5. A high-frequency connector with anti-misalignment and high mechanical stability according to claim 3, characterized in that: The insulator positioning cavity is also provided with an integral stamped rib between the two sets of annular sleeves.

6. The high-frequency connector with anti-misalignment and high mechanical stability according to claim 1, characterized in that: The rear end of the middle crimping member, corresponding to the position of the crimping ring, has at least two stamped barbs arranged in the same circumferential direction.

7. A high-frequency connector with anti-misalignment and high mechanical stability according to claim 1 or 6, characterized in that: The connection area between the middle crimping connector and the tail cable crimping connector forms a concave locking point after the wrapping is completed.

8. The high-frequency connector with anti-misalignment and high mechanical stability according to claim 1, characterized in that: The front end of the insulator positioning cavity forms a terminal insertion port, and the outer periphery of the terminal insertion port is provided with several sets of insertion protrusions, which form two sets of equivalent insertion rings arranged at intervals along the axial length.

9. A high-frequency connector with anti-misalignment and high mechanical stability according to claim 1, characterized in that, It meets the 20GHz transmission frequency requirement, and its return loss parameters are as follows: 0~3GHz: <-26db; 4–6 GHz: < -21 dB; 7–12 GHz: < -16 dB; 12–15 GHz: < -13 dB; 15~20GHz: <-10db.

Images