Connector terminal assembly structure

Abstract

The utility model relates to the technical field of electric connection, especially a connector terminal assembly structure, including alloy shell, first insulator, second insulator and connecting terminal, the alloy shell is provided with first fixed cavity and second fixed cavity, first fixed cavity and second fixed cavity are perpendicular intercommunication, one end of first fixed cavity is provided with the insertion cavity, first insulator sets up in first fixed cavity, and one end extends to insertion cavity, the other end extends to second fixed cavity, second insulator sets up in second fixed cavity, second insulator is provided with the electricity -making cavity, connecting terminal sets up in first insulator, and one end extends to electricity -making cavity. The utility model is optimized specially for the vehicle FAKRA application, has the characteristics such as high space utilization, good assembly, high-frequency performance is excellent, mechanical reliability is strong, can satisfy the strict requirement of automobile electronic to connector miniaturization, high performance and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, and in particular to a connector terminal assembly structure. Background Technology

[0002] With the rapid development of automotive intelligence, connectivity, and electrification, the requirements for data transmission bandwidth and reliability in in-vehicle electronic systems are increasing. High-frequency connectors, as key transmission nodes, are crucial to performance. FAKRA (Fachkreis Automobil) connectors, as a standard interface widely used in automotive radio frequency signal transmission, such as GPS, Bluetooth, Wi-Fi, in-vehicle cameras, and radar sensors, typically employ a coaxial or simple single-cavity insulated layout in their traditional structure. However, many existing connector structures suffer from low space utilization, large overall size, and complex assembly processes, making them unsuitable for the increasingly compact installation space and high-density integration requirements of modern automotive electronic devices. Furthermore, under harsh automotive vibration, shock, and temperature cycling environments, the reliability of the fixation between terminals and insulators, and between insulators and metal housings, faces challenges, easily leading to increased contact resistance or unstable signal transmission due to micro-movements. In addition, the assembly of traditional structures often relies on complex alignment and crimping of multiple parts, resulting in low production efficiency and placing higher demands on the adaptability of automated production lines, affecting product consistency and cost control.

[0003] Therefore, the industry urgently needs a new connector structure design that can achieve miniaturization and modularization of connectors while ensuring excellent high-frequency electrical performance, high mechanical reliability and good electromagnetic shielding effect, and significantly improve their assembly processability and production efficiency, so as to meet the urgent needs of next-generation intelligent connected vehicles for high-performance and high-reliability connection solutions. Utility Model Content

[0004] To address the aforementioned issues, this utility model is specifically optimized for automotive FAKRA applications, featuring high space utilization, excellent assemblability, superior high-frequency performance, and strong mechanical reliability. It is a connector terminal assembly structure that meets the stringent requirements of automotive electronics for connector miniaturization, high performance, and high reliability.

[0005] The technical solution adopted by this utility model is: a connector terminal assembly structure, including an alloy shell, a first insulator, a second insulator, and a connecting terminal. The alloy shell is provided with a first fixing cavity and a second fixing cavity, which are perpendicularly connected. One end of the first fixing cavity is provided with a plug-in cavity. The first insulator is provided in the first fixing cavity, with one end extending to the plug-in cavity and the other end extending to the second fixing cavity. The second insulator is provided in the second fixing cavity and has a power receiving cavity. The connecting terminal is provided in the first insulator and has one end extending to the power receiving cavity.

[0006] A further improvement to the above scheme is that the alloy shell is provided with a plug-in sleeve and a wiring part, the plug-in sleeve and the wiring part are vertically connected, the plug-in cavity and the first fixing cavity are sequentially arranged in the plug-in sleeve, and the second fixing cavity is arranged in the wiring part.

[0007] A further improvement to the above solution is that the insertion sleeve is provided with a sealing mounting groove outside the insertion cavity, a first sealing ring is installed on the sealing mounting groove, and multiple sealing lips are provided on the outer periphery of the first sealing ring.

[0008] A further improvement to the above scheme is that an electrical connection sleeve is provided on the insertion cavity, and an electrical connection end and an electrical connection plug end are respectively provided at both ends of the electrical connection sleeve. The electrical connection end is provided on the first insulator, and the electrical connection plug end extends to the port of the first fixed cavity.

[0009] A further improvement to the above scheme is that the power connection end is provided with a limiting inner ring, and the first insulator is provided with a backstop step. The limiting inner ring is used to abut against the backstop step to prevent the power connection sleeve from retracting.

[0010] A further improvement to the above solution is that the inner circumference of the electrical connection end is provided with an electrical contact spring, which is used to make contact with the connector to conduct electricity and generate friction.

[0011] A further improvement to the above scheme is that the alloy shell is provided with an assembly groove at the top of the second fixing cavity, one end of the second fixing cavity is connected to the assembly groove, and the second insulator is inserted into the second fixing cavity from the assembly groove.

[0012] A further improvement to the above solution is that a sealing groove is provided on the outer periphery of the second fixing cavity for the assembly groove, a second sealing ring is installed in the sealing groove, and a sealing cover plate is installed on the assembly groove. The sealing cover plate is used to cooperate with the second sealing ring to seal the assembly groove.

[0013] A further improvement to the above scheme is that the second insulator is provided with an assembly slot on the side facing the first fixing cavity, and one end of the first insulator is inserted into the assembly slot and extends to the electrical connection cavity.

[0014] A further improvement to the above scheme is that the two ends of the connection terminal are respectively provided with a mating part and a power receiving part, the mating part extends into the mating cavity, and the power receiving part extends into the power receiving cavity.

[0015] The beneficial effects of this utility model are: Compared to existing connector structures, this invention achieves a three-dimensional layout of the connecting terminals and insulators by setting up a first fixed cavity and a second fixed cavity that are perpendicularly connected inside the alloy shell. This greatly optimizes the utilization efficiency of internal space, significantly reduces the overall size of the connector, and meets the stringent requirements of modern automotive electronic systems for connector miniaturization, lightweighting, and high-density layout. The first insulator passes through the first fixed cavity and extends to the mating cavity and the second fixed cavity. The second insulator is precisely installed in the second fixed cavity and has a pre-set electrical contact cavity. The connecting terminal is fixed to the first insulator and accurately extends to the electrical contact cavity of the second insulator. The modular, layered, and clearly oriented assembly design simplifies the assembly process, improves production efficiency and automation, and ensures precise alignment and reliable fixing of each component, ensuring a high degree of consistency in the performance of mass-produced products. The first and second insulators provide reliable dielectric support and insulation protection for the connecting terminals, effectively preventing short circuits with the alloy shell and ensuring the specified impedance characteristics and insulation resistance. One end of the connecting terminal extends securely into the contact cavity, ensuring stable, low-loss electrical contact with the mating terminal or cable core, reducing signal reflection and insertion loss, and is particularly beneficial for high-fidelity, low-interference transmission of high-frequency signals in automotive applications. The alloy housing itself also provides excellent electromagnetic shielding. The alloy housing offers superior mechanical strength and resistance to vibration and shock, enabling it to withstand the harsh environment of automotive operation. The insulator's fixation and cavity structure design enhance the overall integrity of the internal structure and improve vibration resistance. The well-designed structure also helps maintain stable contact pressure, preventing terminal loosening. This invention is specifically optimized for automotive FAKRA applications, featuring high space utilization, good assemblability, excellent high-frequency performance, and strong mechanical reliability, meeting the stringent requirements of automotive electronics for connector miniaturization, high performance, and high reliability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the connector terminal assembly structure of this utility model; Figure 2 for Figure 1 A three-dimensional schematic diagram of the intermediate connector terminal assembly structure from another perspective; Figure 3 for Figure 1Exploded view of the intermediate connector terminal assembly structure; Figure 4 for Figure 1 Front view schematic diagram of the intermediate connector terminal assembly structure; Figure 5 for Figure 4 Sectional view of AA.

[0017] Explanation of reference numerals in the attached drawings: Alloy housing 1, First fixing cavity 11, Second fixing cavity 12, Insertion cavity 13, Insertion sleeve 14, Sealing mounting groove 141, First sealing ring 142, Sealing outer lip 143, Wiring part 15, Electrical connecting sleeve 16, Electrical connecting end 161, Electrical connecting plug end 162, Limiting inner ring 163, Electrical connecting spring 164, Assembly groove 17, Sealing groove 171, Second sealing ring 172, Sealing cover plate 173, First insulator 2, Anti-retraction step 21, Second insulator 3, Electrical connecting cavity 31, Assembly slot 32, Connecting terminal 4, Plug-in part 41, Electrical connecting part 42. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0021] like Figures 1-5As shown, in one embodiment of this utility model, a connector terminal assembly structure is provided, including an alloy housing 1, a first insulator 2, a second insulator 3, and a connecting terminal 4. The alloy housing 1 is provided with a first fixing cavity 11 and a second fixing cavity 12, which are perpendicularly connected. One end of the first fixing cavity 11 is provided with a insertion cavity 13. The first insulator 2 is disposed in the first fixing cavity 11, with one end extending to the insertion cavity 13 and the other end extending to the second fixing cavity 12. The second insulator 3 is disposed in the second fixing cavity 12 and is provided with a contact cavity 31. The connecting terminal 4 is disposed in the first insulator 2, with one end extending to the contact cavity 31. This embodiment achieves a three-dimensional layout of the connecting terminal 4 and the insulator by providing a first fixing cavity 11 and a second fixing cavity 12 that are perpendicularly connected inside the alloy housing 1. This greatly optimizes the internal space utilization efficiency, significantly reduces the overall size of the connector, and meets the stringent requirements of modern automotive electronic systems for connector miniaturization, lightweighting, and high-density layout. The first insulator 2 penetrates the first fixed cavity 11 and extends to the insertion cavity 13 and the second fixed cavity 12. The second insulator 3 is precisely installed in the second fixed cavity 12 and has a pre-set electrical connection cavity 31. The connecting terminal 4 is fixed to the first insulator 2 and extends accurately to the electrical connection cavity 31 of the second insulator 3. The modular, layered, and clearly oriented assembly design simplifies the assembly process, improves production efficiency and automation, and ensures precise alignment and reliable fixing of each component, guaranteeing high consistency in the performance of mass-produced products. The first insulator 2 and the second insulator 3 provide reliable dielectric support and insulation protection for the connecting terminal 4, effectively preventing short circuits with the alloy housing 1 and ensuring the specified impedance characteristics and insulation resistance. One end of the connecting terminal 4 extends securely to the electrical connection cavity 31, ensuring stable, low-loss electrical contact with the mating terminal or cable core, reducing signal reflection and insertion loss, which is particularly beneficial for high-fidelity, low-interference transmission of high-frequency signals in vehicles. The alloy housing 1 itself also provides good electromagnetic shielding. The alloy housing 1 provides excellent mechanical strength and vibration and shock resistance, capable of withstanding the harsh environment of automotive operation. The insulator's fixation and cavity structure design enhance the overall integrity of the internal structure and improve vibration resistance. A well-designed structure also helps maintain stable contact pressure and prevents terminal loosening. This embodiment is specifically optimized for automotive FAKRA applications, featuring high space utilization, good assemblability, excellent high-frequency performance, and strong mechanical reliability, meeting the stringent requirements of automotive electronics for connector miniaturization, high performance, and high reliability.

[0022] The alloy housing 1 is provided with a plug-in sleeve 14 and a wiring portion 15. The plug-in sleeve 14 and the wiring portion 15 are vertically connected. The plug-in cavity 13 and the first fixing cavity 11 are sequentially arranged in the plug-in sleeve 14, and the second fixing cavity 12 is arranged in the wiring portion 15. Specifically, the plug-in sleeve 14 is provided with a sealing mounting groove 141 outside the plug-in cavity 13. A first sealing ring 142 is installed on the sealing mounting groove 141, and multiple sealing lips 143 are provided on the outer periphery of the first sealing ring 142. In this embodiment, when mating with the connector assembly or mounting panel, multiple elastic contact sealing barriers can be generated, effectively adapting to the small tolerance fluctuations and deformations of the mating surface, enhancing the barrier capability against pollutants such as dust and moisture, and is especially suitable for scenarios with high requirements for moisture resistance and corrosion resistance in automotive environments. This structure ensures smooth insertion and removal while significantly improving the overall environmental adaptability and long-term reliability of the connector.

[0023] A power-connecting sleeve 16 is provided on the insertion cavity 13. The two ends of the power-connecting sleeve 16 are respectively provided with a power-connecting connection end 161 and a power-connecting mating end 162. The power-connecting connection end 161 is located on the first insulator 2, and the power-connecting mating end 162 extends to the port of the first fixed cavity 11. In this embodiment, by providing a power-connecting sleeve 16 within the insertion cavity 13 and defining its two ends as the power-connecting connection end 161 and the power-connecting mating end 162, an efficient and reliable transition connection between the connecting terminal 4 and the external mating terminal is achieved. The power-connecting connection end 161 is fixed to the first insulator 2, ensuring stable electrical contact and mechanical support with the internal connecting terminal 4; the power-connecting mating end 162 extends precisely to the port of the first fixed cavity 11, providing a clearly guided and easy-to-plug mating interface for the external mating plug. This effectively reduces wear during insertion and removal, reduces contact resistance, and improves the stability and reliability of signal transmission, making it particularly suitable for vehicle-mounted radio frequency signal transmission scenarios that require frequent insertion and removal or high electrical continuity.

[0024] The power connection end 161 is provided with a limiting inner ring 163, and the first insulator 2 is provided with a backstop step 21. The limiting inner ring 163 is used to abut against the backstop step 21 to prevent the power connection sleeve 16 from retracting. In this embodiment, by providing a limiting inner ring 163 on the power connection end 161 of the power connection sleeve 16 and correspondingly providing a backstop step 21 on the first insulator 2, a simple and effective axial limiting and anti-retraction structure is formed. When the power connection sleeve 16 is installed in place, its limiting inner ring 163 abuts against the backstop step 21 of the insulator, which can reliably limit the axial displacement or loosening of the power connection sleeve 16 due to vibration, insertion and extraction force or cable stress during use, ensuring the long-term stability of its electrical connection position. This improves the vibration resistance and overall reliability of the connector in the vehicle vibration environment, prevents signal transmission interruption or performance degradation caused by changes in the position of the contact parts, and has a simple structure, requires no additional parts, and is easy to assemble.

[0025] A contact spring 164 protrudes from the inner circumference of the electrical mating end 162. The contact spring 164 is used for conductive contact with the connector and generates friction. In this embodiment, by providing the contact spring 164 protruding from the inner circumference of the electrical mating end 162, reliable elastic contact with the connector pins is achieved. The contact spring 164 generates radial friction during mating, providing not only stable mechanical holding force to prevent contact loosening due to vibration, but also ensuring low-resistance conduction at the contact interface through continuous elastic pressure. Its multi-point contact design enhances current carrying capacity and signal transmission stability, making it particularly suitable for high-reliability electrical connection requirements in high-frequency vibration environments such as automotive applications, effectively avoiding contact failure and electrical performance fluctuations.

[0026] An assembly groove 17 is provided at the top of the second fixing cavity 12 on the alloy housing 1. One end of the second fixing cavity 12 is connected to the assembly groove 17, and the second insulator 3 is inserted into the second fixing cavity 12 through the assembly groove 17. Specifically, a sealing groove 171 is provided on the outer periphery of the second fixing cavity 12 in the assembly groove 17. A second sealing ring 172 is installed in the sealing groove 171, and a sealing cover plate 173 is installed in the assembly groove 17. The sealing cover plate 173 is used to seal the assembly groove 17 in conjunction with the second sealing ring 172. In this embodiment, by providing an assembly groove 17 on the alloy housing 1, a precise guide path and assembly space are provided for the installation of the second insulator 3, ensuring the alignment of the components and the convenience of assembly. Furthermore, the sealing groove 171 and the second sealing ring 172 on the outer periphery of the assembly groove 17, combined with the pressing action of the sealing cover plate 173, together constitute a highly efficient multi-layer sealing barrier. This structure effectively resists the intrusion of external moisture, dust and other pollutants, significantly improving the protection level of the connector in harsh environments such as engine compartments.

[0027] A mounting slot 32 is provided on the side of the second insulator 3 facing the first fixing cavity 11. One end of the first insulator 2 is inserted into the mounting slot 32 and extends to the electrical contact cavity 31. In this embodiment, by providing a mounting slot 32 on the second insulator 3 and forming an insertion-type mating structure with the first insulator 2, precise alignment and reliable connection between the two insulators are achieved. Stable axial and radial support is provided for the internal electrical contact sleeve 16, ensuring its coaxiality with the mating terminal, reducing wear and damage during insertion and removal, simplifying the overall assembly process, and improving production efficiency and consistency. The mechanical stability inside the connector is enhanced, preventing displacement of internal components due to vibration, thereby ensuring the durable reliability of electrical contact and the integrity of signal transmission.

[0028] The connecting terminal 4 has a mating portion 41 and a connecting portion 42 at both ends. The mating portion 41 extends into the mating cavity 13, and the connecting portion 42 extends into the connecting cavity 31. In this embodiment, by setting the connecting terminal 4 as a segmented structure with the mating portion 41 and the connecting portion 42, clear functional partitioning and optimized layout are achieved. The mating portion 41, extending into the mating cavity 13, can be directly mated with the connector to form an external circuit connection interface; the connecting portion 42, extending into the connecting cavity 31, is used for soldering or crimping with internal wires. This shortens the current transmission path, reduces contact resistance and signal attenuation, and is beneficial for high current carrying and high-frequency signal transmission.

[0029] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A connector terminal assembly structure, characterized in that: The device includes an alloy housing, a first insulator, a second insulator, and a connecting terminal. The alloy housing has a first fixing cavity and a second fixing cavity, which are perpendicularly connected. One end of the first fixing cavity has a plug-in cavity. The first insulator is disposed in the first fixing cavity, with one end extending into the plug-in cavity and the other end extending into the second fixing cavity. The second insulator is disposed in the second fixing cavity and has a power-connecting cavity. The connecting terminal is disposed in the first insulator and has one end extending into the power-connecting cavity.

2. The connector terminal assembly structure according to claim 1, characterized in that: The alloy housing is provided with a plug-in sleeve and a wiring part. The plug-in sleeve and the wiring part are vertically connected. The plug-in cavity and the first fixing cavity are arranged sequentially in the plug-in sleeve, and the second fixing cavity is arranged in the wiring part.

3. The connector terminal assembly structure according to claim 2, characterized in that: The insertion sleeve is provided with a sealing mounting groove outside the insertion cavity, and a first sealing ring is installed on the sealing mounting groove. Multiple sealing lips are provided on the outer periphery of the first sealing ring.

4. The connector terminal assembly structure according to claim 1, characterized in that: The insertion cavity is provided with an electrical connection sleeve, and the two ends of the electrical connection sleeve are respectively provided with an electrical connection end and an electrical connection plug end. The electrical connection end is provided on the first insulator, and the electrical connection plug end extends to the port of the first fixed cavity.

5. The connector terminal assembly structure according to claim 4, characterized in that: The power connection end is provided with a limiting inner ring, and the first insulator is provided with a backstop step. The limiting inner ring is used to abut against the backstop step to prevent the power connection sleeve from retracting.

6. The connector terminal assembly structure according to claim 4, characterized in that: The inner circumference of the electrical connection end is provided with an electrical contact spring, which is used to make contact with the connector to conduct electricity and generate friction.

7. The connector terminal assembly structure according to claim 1, characterized in that: The alloy shell is provided with an assembly groove at the top of the second fixing cavity. One end of the second fixing cavity is connected to the assembly groove, and the second insulator is inserted into the second fixing cavity from the assembly groove.

8. The connector terminal assembly structure according to claim 7, characterized in that: The assembly groove is provided with a sealing groove on the outer periphery of the second fixing cavity. A second sealing ring is installed in the sealing groove. A sealing cover plate is installed in the assembly groove. The sealing cover plate is used to cooperate with the second sealing ring to seal the assembly groove.

9. The connector terminal assembly structure according to claim 1, characterized in that: The second insulator has an assembly slot on the side facing the first fixing cavity, and one end of the first insulator is inserted into the assembly slot and extends into the electrical connection cavity.

10. The connector terminal assembly structure according to claim 1, characterized in that: The two ends of the connection terminal are respectively provided with a mating part and a power receiving part, the mating part extends into the mating cavity, and the power receiving part extends into the power receiving cavity.

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