Shielded coaxial cables and shielded connectors

Abstract

This utility model relates to the field of electrical connection technology, specifically a shielded coaxial cable and a shielded connector, comprising a housing, a power receiving element, and a shielded connecting element. The housing has a first connecting end and a second connecting end. The power receiving element is located at the first connecting end, and the second connecting end is located to one side of the first connecting end. The shielded connecting element is located at the second connecting end. The power receiving element has a power receiving terminal and a zinc alloy sleeve. The zinc alloy sleeve has an insulating core for mounting the power receiving terminal. The power receiving terminal is used to connect to a center conductor, and the zinc alloy sleeve is connected to an inner shielding layer. The shielded connecting element has a shielded terminal. This utility model, through the combination of a shielded connector and a shielded coaxial cable, provides stable, reliable, and high-quality signal transmission for automotive cameras.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, and in particular to a shielded coaxial cable and a shielded connector. Background Technology

[0002] Automotive connectors, as indispensable components in modern automotive electronic equipment, play a crucial role in data transmission and power supply between various electronic devices and vehicle systems. With the increasing intelligence and informatization of automobiles, the performance requirements for automotive connectors are becoming increasingly stringent. Currently, in practical applications, existing automotive connectors exhibit significant shortcomings in terminal fixation stability. During vehicle operation, vibrations and bumps are inevitable, and these external forces can cause the internal terminals of the connector to loosen. Once the terminals loosen, it is highly likely to cause poor contact, thereby interfering with the accuracy and stability of data transmission, and in severe cases, even interrupting data transmission. Furthermore, unstable terminal fixation can also affect the continuity of power supply, leading to abnormal power outages in connected devices, which not only affects the normal operation of the equipment but may also cause long-term damage. This lack of stability not only inconveniences users but also limits the further development of automotive electronic equipment towards higher performance and higher reliability. In particular, signal shielding issues affect the stability of signal transmission. Therefore, new improvements are needed to the shielding structure of existing connectors. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a stable, reliable, and high-quality signal transmission solution for automotive cameras through a combination of a shielded connector and a shielded coaxial cable. This shielded coaxial cable and shielded connector effectively meet the multifunctional requirements of in-vehicle systems for image clarity, stability, and other aspects.

[0004] The technical solution adopted by this utility model is: a shielded coaxial cable, comprising, from the inside out, a central conductor, a central insulating layer, an aluminum foil layer, an inner shielding layer, an intermediate insulating layer, an outer shielding layer, and an outer insulating layer. The central insulating layer covers the intermediate conductor, the aluminum foil layer covers the central insulating layer, the inner shielding layer and the outer shielding layer are both mesh-like interwoven layers, the inner shielding layer covers the outer diameter of the aluminum foil layer, the intermediate insulating layer is used for insulating separation between the inner shielding layer and the outer shielding layer, and the outer shielding layer covers the outer shielding layer.

[0005] A further improvement to the above scheme is that both the inner shielding layer and the outer shielding layer are woven from tin-plated copper alloy wire, and the braiding coverage is greater than or equal to 90%.

[0006] A further improvement to the above scheme is that the central insulation layer, the intermediate insulation layer and the outer insulation layer are all made of halogen-free flame-retardant polyolefin material.

[0007] A shielded connector includes the aforementioned shielded coaxial cable. The shielded connector includes a housing, a power-connecting element, and a shielded connecting element. The housing is provided with a first connecting end and a second connecting end. The power-connecting element is located at the first connecting end, and the second connecting end is located to one side of the first connecting end. The shielded connecting element is located at the second connecting end. The power-connecting element is provided with a power-connecting terminal and a zinc alloy sleeve. The zinc alloy sleeve is provided with an insulating core for mounting the power-connecting terminal. The power-connecting terminal is used to connect a center conductor, and the zinc alloy sleeve is connected to an inner shielding layer. The shielded connecting element is provided with a shielded terminal, and one end of the shielded terminal is provided with a shielded connecting wire, which is connected to an outer shielding layer.

[0008] A further improvement to the above solution is that the first connecting end includes a coaxial and sequentially connected insertion cavity, a fixed cavity, and a wiring cavity; the zinc alloy sleeve includes a sequentially arranged insertion end, a fixed end, and a wiring end; the fixed end is disposed in the fixed cavity; one end of the insertion end extends into the insertion cavity; and the wiring end extends toward the wiring cavity.

[0009] A further improvement to the above scheme is that the wall surface of the insertion cavity is provided with a positioning boss, the positioning boss is provided with a positioning arc groove, and the axis of the positioning arc groove is coaxial with the insertion end; a reinforcing ring is protruding from one end of the fixing cavity facing the insertion cavity, a sealing groove is provided between the fixing end and the reinforcing ring, and a sealing ring is provided on the sealing groove; a limiting platform is provided at one end of the fixing cavity facing the wiring cavity, and a limiting ring is provided at the wiring end, one side of the limiting ring and the limiting platform are used for limiting the zinc alloy sleeve.

[0010] A further improvement to the above solution is that a plug-in buckle is provided on one side of the housing. The plug-in buckle is used to fix the connector when it is plugged in. The plug-in buckle includes a front end and a pressing part. The plug-in buckle is provided with a connecting post that connects to the surface of the housing. The pressing part and the front end extend towards both ends of the housing with the connecting post as the center. The front end is provided with a plug-in slot. The plug-in slot is used to fix the connector when it is plugged in.

[0011] A further improvement to the above solution is that a fixing slot is provided on one side of the outer shell, one end of the fixing slot is connected to the fixing cavity, and a first fixing member is provided in the fixing slot. The first fixing member is used to insert into the first fixing slot and fix the zinc alloy sleeve in the fixing cavity.

[0012] A further improvement to the above solution is that the first fixing member is provided with a first fixing pin, and two first fixing pins are arranged opposite each other, forming an alloy fixing groove between the two first fixing pins. The alloy fixing groove is used to fix the zinc alloy sleeve in the fixing cavity. The wall surface of the fixing slot is provided with a pin slot, and the first fixing pin is provided with a pin buckle. The pin slot is used to cooperate with the pin buckle to fix the first fixing pin in the fixing slot.

[0013] A further improvement to the above solution is that the second connection end includes a mating fixing groove and a terminal fixing part. The terminal fixing part is provided with a second fixing member, which is used to fix the shielding terminal in the mating fixing groove. A through groove is provided on one side of the second connection end, and a contact spring is provided on the side of the shielding terminal facing the through groove. The contact spring is located in the through groove for contacting the terminal of the target connector.

[0014] A further improvement to the above solution is that the terminal fixing part is provided with a fixing assembly groove, the fixing assembly groove is provided with an assembly slot, the second fixing member is provided with a second fixing pin, the second fixing pin is inserted into the fixing assembly groove and is provided with an assembly buckle to engage with the assembly slot; one end of the second fixing member is provided with a backstop step, the shielding terminal is provided with an alignment plate, the backstop step is used to abut against the alignment plate to prevent the shielding terminal from backing up; the second connecting end is provided with a socket, the socket is used to connect the shielding terminal.

[0015] The beneficial effects of this utility model are:

[0016] Compared to existing connector shielded cables, this invention utilizes a triple shielding structure to block external interference signals, ensuring clear and stable transmission of image signals. The central conductor is the core of signal transmission, and the central insulation layer ensures the stability of signal transmission through the central conductor. The triple shielding, consisting of an aluminum foil layer, an inner shielding layer, and an outer shielding layer, effectively resists external electromagnetic interference. In the complex electrical environment of a car, various electronic devices generate electromagnetic signals, which can affect the transmission quality of camera images. The aluminum foil layer initially blocks some electromagnetic interference, while the inner and outer shielding layers, as a mesh-like interwoven layer, further enhance the shielding effect, blocking external interference signals and ensuring clear and stable transmission of image signals, providing high-quality image data for the vehicle system. The intermediate insulation layer acts as an insulating separator between the inner and outer shielding layers, preventing signal crosstalk between the two shielding layers and further improving the shielding effect and the reliability of signal transmission. This results in more accurate image transmission from the camera, meeting the vehicle system's need for capturing image details, such as clearly presenting the surrounding environment information in functions like reversing cameras and dashcams. The outer insulation layer protects the entire shielded coaxial cable, preventing it from external physical damage and chemical corrosion, extending the coaxial cable's service life and ensuring long-term stable image transmission. This invention provides a stable and reliable signal transmission channel for automotive cameras, meeting the high requirements of in-vehicle systems for image transmission. It can easily handle high-definition images, multi-angle images, and real-time image transmission, playing a vital role in improving the safety and intelligence level of automobiles.

[0017] The aforementioned shielded coaxial cable is applied to a shielded connector, and the combined use of the shielded connector and the shielded coaxial cable establishes a reliable bridge between the camera and the vehicle system. The electrical connection element is located at the first connection end of the housing, with its terminals connected to the center conductor of the shielded coaxial cable, enabling efficient and stable transmission of image signals. The zinc alloy sleeve not only secures the electrical terminals but also connects to the inner shielding layer, ensuring the continuity of the inner shielding, enhancing signal transmission stability, preventing signal attenuation or distortion at the connection point, and ensuring accurate transmission of image signals from the camera to the vehicle system. The shielded connection element of the shielded connector is located at the second connection end, with the shielded connection wire of the shielded terminal connecting to the outer shielding layer, allowing the triple shielding structure of the shielded coaxial cable to continue through the connector. This further enhances the shielding capability against electromagnetic interference, effectively blocking external interference signals from entering the transmission line in the complex electromagnetic environment of a vehicle, ensuring the purity of the image signal. Electromagnetic interference generated by engine operation or other electronic equipment operation is unlikely to affect the transmission quality of the image signal. The insulating core ensures insulation between the terminals and between the terminals and the zinc alloy sleeve, preventing signal short circuits and improving the connector's safety and reliability. The combination of shielded connectors and shielded coaxial cables provides a stable, reliable, and high-quality signal transmission solution for automotive cameras, effectively meeting the multifunctional requirements of in-vehicle systems for image clarity, stability, and other aspects. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the shielded coaxial cable of this utility model;

[0019] Figure 2 This is a three-dimensional schematic diagram of the shielded connector of this utility model;

[0020] Figure 3 for Figure 2 A three-dimensional schematic diagram of the shielded connector;

[0021] Figure 4 for Figure 2 Front view schematic diagram of the shielded connector;

[0022] Figure 5 for Figure 4 Sectional view of AA;

[0023] Figure 6 for Figure 4 Sectional view of BB;

[0024] Figure 7 for Figure 2 A partial structural diagram of the shielded connector;

[0025] Figure 8 for Figure 1 Another perspective view of the structure of the shielded connector.

[0026] Explanation of reference numerals in the attached drawings: Shielded coaxial cable 10, center conductor 101, center insulating layer 102, aluminum foil layer 103, inner shielding layer 104, intermediate insulating layer 105, outer shielding layer 106, outer insulating layer 107;

[0027] Shielded connector 20, housing 1, first connecting end 11, insertion cavity 111, positioning boss 1111, positioning arc groove 1112, fixing cavity 112, reinforcing ring 1121, sealing groove 1122, limiting platform 1123, wiring cavity 113, insertion buckle 12, front end 121, pressing part 122, insertion slot 123, fixing slot 13, pin slot 131, first fixing member 14, first fixing pin 141, alloy fixing groove 142, pin buckle 143, second connecting end 15, mating fastener Fixed slot 151, terminal fixing part 152, through slot 153, fixed assembly slot 154, assembly slot 155, insertion hole 156, second fixing part 16, second fixed pin 161, assembly buckle 162, anti-retraction step 163, power connection element 2, power connection terminal 21, zinc alloy sleeve 22, plug end 221, fixed end 222, wiring terminal 223, limit ring 2231, insulating rubber core 23, shielded connection element 3, shielded terminal 31, contact spring 311, alignment plate 312, shielded connection wire 32. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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. Figures 1-3As shown, in one embodiment of this utility model, a shielded coaxial cable 10 is provided, comprising, from the inside out, a central conductor 101, a central insulating layer 102, an aluminum foil layer 103, an inner shielding layer 104, a middle insulating layer 105, an outer shielding layer 106, and an outer insulating layer 107. The central insulating layer 102 covers the middle conductor, and the aluminum foil layer 103 covers the central insulating layer 102. Both the inner shielding layer 104 and the outer shielding layer 106 are mesh-like interwoven layers. The inner shielding layer 104 covers the outer diameter of the aluminum foil layer 103. The middle insulating layer 105 serves as an insulating separator between the inner shielding layer 104 and the outer shielding layer 106, and the outer shielding layer 106 covers the outer shielding layer 107. This embodiment uses a triple shielding structure to shield external interference signals, ensuring clear and stable transmission of image signals. The central conductor 101 is the core of signal transmission, and the central insulating layer 102 ensures the stability of signal transmission through the central conductor 101. The triple shielding structure, consisting of aluminum foil layer 103, inner shielding layer 104, and outer shielding layer 106, effectively resists external electromagnetic interference. In the complex electrical environment of a car, various electronic devices generate electromagnetic signals, which can affect the transmission quality of camera images. Aluminum foil layer 103 initially blocks some electromagnetic interference, while the inner shielding layer 104 and outer shielding layer 106, as interwoven mesh layers, further enhance the shielding effect, keeping external interference signals out and ensuring clear and stable transmission of image signals, providing high-quality image data for the vehicle system. The intermediate insulating layer 105 acts as an insulating separator between the inner shielding layer 104 and the outer shielding layer 106, preventing signal crosstalk between the two shielding layers and further improving the shielding effect and signal transmission reliability. This makes the images transmitted by the camera more accurate, meeting the vehicle system's need for capturing image details, such as clearly presenting the surrounding environment information in functions like reversing cameras and dashcams. The outer insulation layer 107 protects the entire shielded coaxial cable 10 from external physical damage and chemical corrosion, extending the service life of the coaxial cable and ensuring long-term stable image transmission. This embodiment provides a stable and reliable signal transmission channel for automotive cameras, meeting the high requirements of in-vehicle systems for image transmission. It can easily handle high-definition images, multi-angle images, and real-time image transmission, playing an important role in improving the safety and intelligence level of automobiles.

[0031] Both the inner shielding layer 104 and the outer shielding layer 106 are braided from tin-plated copper alloy wire, with a braiding coverage of greater than or equal to 90%. In this embodiment, the tin-plated copper alloy wire has good conductivity and corrosion resistance. The design with a braiding coverage of greater than or equal to 90% greatly enhances the shielding effect. It can effectively block external electromagnetic interference. There are many electronic devices inside a car, generating complex electromagnetic signals that can easily interfere with image signal transmission. The high-coverage shielding layer can block these interference signals, ensuring that the image signal is not interfered with, providing stable and reliable image data for the vehicle system, and meeting its requirements for image quality, real-time performance, and other aspects, whether for reversing cameras, driving records, or image applications in intelligent assisted driving.

[0032] The central insulation layer 102, intermediate insulation layer 105, and outer insulation layer 107 are all made of halogen-free flame-retardant polyolefin material. In this embodiment, the internal electrical system of the automobile is complex and poses a certain fire hazard. The halogen-free flame-retardant properties make it difficult to burn when exposed to a fire source, and even if it burns, it will not produce a large amount of toxic halide gases, ensuring the safety of passengers inside the vehicle. At the same time, it also avoids damage to the shielded coaxial cable 10 due to the burning of the insulation layer, which would affect image transmission. Polyolefin material has good electrical insulation properties. The central insulation layer 102 can effectively isolate the central conductor 101 from other layers, ensuring stable transmission of image signals on the central conductor 101 and reducing signal attenuation and interference. The intermediate insulation layer 105 ensures that the inner shielding layer 104 and the outer shielding layer 106 do not interfere with each other, maintaining the shielding effect.

[0033] See Figures 1-8As shown, a shielded connector 20 includes the shielded coaxial cable 10. The shielded connector 20 includes a housing 1, a power receiving element 2, and a shielded connecting element 3. The housing 1 is provided with a first connecting end 11 and a second connecting end 15. The power receiving element 2 is provided at the first connecting end 11, and the second connecting end 15 is located on one side of the first connecting end 11. The shielded connecting element 3 is provided at the second connecting end 15. The power receiving element 2 is provided with a power receiving terminal 21 and a zinc alloy sleeve 22. The zinc alloy sleeve 22 is provided with an insulating core 23 for mounting the power receiving terminal 21. The power receiving terminal 21 is used to connect to a center conductor 101. The zinc alloy sleeve 22 is connected to an inner shielding layer 104. The shielded connecting element 3 is provided with a shielded terminal 31. One end of the shielded terminal 31 is provided with a shielded connecting wire 32, and the shielded connecting wire 32 is connected to an outer shielding layer 106. In this embodiment, the shielded coaxial cable 10 is applied to the shielded connector 20. The combined use of the shielded connector 20 and the shielded coaxial cable 10 establishes a reliable bridge between the camera and the vehicle system. The power connection element 2 is located at the first connection end 11 of the housing 1, and its power connection terminal 21 is connected to the central conductor 101 of the shielded coaxial cable 10, enabling efficient and stable transmission of image signals. The zinc alloy sleeve 22 not only fixes the power connection terminal 21 but also connects to the inner shielding layer 104, ensuring the continuity of the inner shielding, enhancing the stability of signal transmission, preventing signal attenuation or distortion at the connection point, and ensuring that the image signal can be accurately transmitted from the camera to the vehicle system. The shielded connection element 3 of the shielded connector 20 is located at the second connection end 15, and the shielded connection line 32 of the shielded terminal 31 is connected to the outer shielding layer 106, allowing the triple shielding structure of the shielded coaxial cable 10 to be continued through the connector. This further enhances the shielding capability against electromagnetic interference, effectively blocking external interference signals from entering the transmission line in the complex electromagnetic environment of a vehicle, ensuring the purity of the image signal. Electromagnetic interference from engine operation or other electronic devices is unlikely to affect the transmission quality of the image signal. The insulating core 23 ensures insulation between the terminals 21 and between the terminals 21 and the zinc alloy sleeve 22, avoiding signal short circuits and improving the safety and reliability of the connector. The combination of the shielded connector 20 and the shielded coaxial cable 10 provides a stable, reliable, and high-quality signal transmission solution for automotive cameras, effectively meeting the multifunctional requirements of in-vehicle systems for image clarity, stability, and other aspects.

[0034] The first connecting end 11 includes a coaxial and sequentially connected insertion cavity 111, a fixing cavity 112, and a wiring cavity 113. The zinc alloy sleeve 22 includes a sequentially arranged insertion end 221, a fixing end 222, and a wiring end 223. The fixing end 222 is disposed within the fixing cavity 112, one end of the insertion end 221 extends into the insertion cavity 111, and the wiring end 223 extends toward the wiring cavity 113. In this embodiment, the coaxial and continuous design of the insertion cavity 111, fixing cavity 112, and wiring cavity 113 of the first connecting end 11 matches the insertion end 221, fixing end 222, and wiring end 223 of the zinc alloy sleeve 22, making the connection more stable and precise. The fixing end 222, disposed within the fixing cavity 112, ensures the stable position of the zinc alloy sleeve 22 in the connector, preventing loosening due to vibration during vehicle operation. The connector 221 extends into the connector cavity 111, facilitating reliable connection with other devices and providing a stable interface for image signal transmission. This reduces contact problems during signal transmission and ensures smooth transmission of image signals from the camera to the vehicle system. The wiring terminal 223 extends towards the wiring cavity 113, facilitating connection with the center conductor 101 of the shielded coaxial cable 10, resulting in a clear and stable signal transmission path. This effectively reduces signal interference and attenuation, ensuring high-quality image signal transmission and meeting the image clarity requirements of the vehicle system.

[0035] The wall of the insertion cavity 111 is provided with a positioning boss 1111, and the positioning boss 1111 is provided with a positioning arc groove 1112. The axis of the positioning arc groove 1112 is coaxial with the insertion end 221. The fixed cavity 112 is provided with a reinforcing ring 1121 protruding from one end facing the insertion cavity 111. A sealing groove 1122 is provided between the fixed end 222 and the reinforcing ring 1121. A sealing ring is provided on the sealing groove 1122. The fixed cavity 112 is provided with a limiting platform 1123 at one end facing the wiring cavity 113. The wiring end 223 is provided with a limiting ring 2231. One side of the limiting ring 2231 is aligned with the limiting platform 1123 for limiting the zinc alloy sleeve 22. In this embodiment, the positioning boss 1111 and positioning arc groove 1112 on the wall of the insertion cavity 111 are coaxial with the insertion end 221, which ensures that the insertion end 221 is accurately inserted and positioned, preventing poor contact or unstable signal transmission caused by insertion deviation, ensuring stable transmission of image signals, and allowing the vehicle system to obtain clear images. The reinforcing ring 1121 at the end of the fixed cavity 112 facing the insertion cavity 111, the sealing groove 1122 and the sealing ring between the fixed end 222 can effectively prevent dust, moisture and other substances from entering the connector, avoiding damage to internal components, improving the stability and reliability of the connector, and making image transmission unaffected by external environmental interference. The limiting platform 1123 at the end of the fixed cavity 112 facing the wiring cavity 113 cooperates with the limiting ring 2231 of the wiring end 223 to accurately limit the zinc alloy sleeve 22, preventing it from shifting or shaking during vehicle vibration, further ensuring the stability of the connection between the power connection element 2 and the shielded coaxial line 10. This ensures a stable connection between the shielded connector 20 and the shielded coaxial cable 10, providing high-quality, stable, and reliable image signals for the vehicle system and meeting its various image function requirements.

[0036] A plug-in latch 12 is provided on one side of the outer shell 1. The plug-in latch 12 is used to fix the connector when it is inserted. The plug-in latch 12 includes a front end portion 121 and a pressing portion 122. The plug-in latch 12 is provided with a connecting post that connects to the surface of the outer shell 1. The pressing portion 122 and the front end portion 121 extend towards both ends of the outer shell 1 with the connecting post as the center. The front end portion 121 is provided with a plug-in slot 123. The plug-in slot 123 is used to fix the connector when it is inserted. In this embodiment, the plug-in latch 12 on one side of the outer shell 1 can play a good fixing role when the connector is inserted. Its front end portion 121 and pressing portion 122 extend towards both ends of the outer shell 1 with the connecting post as the center. During connector mating, the insertion slot 123 on the front end 121 engages tightly with the target connector, ensuring a secure connection and preventing loosening due to vibrations or bumps during vehicle operation. This ensures stable connection between the shielded coaxial cable 10 and the target connector, guaranteeing continuous and stable transmission of image signals to the vehicle system. The fixing state can be easily released by pressing the pressing part 122, facilitating maintenance and equipment replacement. This flexible plug-and-play design improves installation efficiency and reduces maintenance costs.

[0037] A fixing slot 13 is provided on one side of the outer casing 1. One end of the fixing slot 13 is connected to the fixing cavity 112. The fixing slot 13 is provided with a first fixing member 14, which is used to insert into the first fixing slot 13 and fix the zinc alloy sleeve 22 in the fixing cavity 112. Specifically, the first fixing member 14 is provided with a first fixing pin 141. There are two first fixing pins 141 arranged opposite each other, and an alloy fixing groove 142 is formed between the two first fixing pins 141. The alloy fixing groove 142 is used to fix the zinc alloy sleeve 22 in the fixing cavity 112. The wall surface of the fixing slot 13 is provided with a pin slot 131. The first fixing pin 141 is provided with a pin latch 143. The pin slot 131 is used to cooperate with the pin latch 143 to fix the first fixing pin 141 in the fixing slot 13. In this embodiment, a fixing slot 13 on one side of the outer casing 1 connects to a fixing cavity 112, into which a first fixing member 14 can be inserted. Two opposing first fixing pins 141 on the first fixing member 14 form an alloy fixing groove 142, which tightly fixes the zinc alloy sleeve 22 within the fixing cavity 112. During vehicle operation, bumps and vibrations are inevitable. This stable fixing method prevents the zinc alloy sleeve 22 from shifting or loosening due to external factors, ensuring its positional stability. The pin slots 131 on the wall of the fixing slot 13 cooperate with the pin latches 143 on the first fixing pins 141, firmly fixing the first fixing pins 141 within the fixing slot 13. This further enhances the reliability of the entire fixing structure, preventing the first fixing member 14 from detaching from the fixing slot 13 during use, thus ensuring the zinc alloy sleeve 22 remains in a stable fixed state. This stable zinc alloy sleeve 22 fixing structure helps ensure the stability of the connection between the shielded coaxial cable 10 and the connector, thereby ensuring stable transmission of image signals.

[0038] The second connecting end 15 includes a mating fixing groove 151 and a terminal fixing part 152. The terminal fixing part 152 is provided with a second fixing member 16, which is used to fix the shielded terminal 31 in the mating fixing groove 151. A through groove 153 is provided on one side of the second connecting end 15, and a contact spring 311 is provided on the side of the shielded terminal 31 facing the through groove 153. The contact spring 311 is located in the through groove 153 for contacting the terminal of the target connector. In this embodiment, the mating fixing groove 151 and the terminal fixing part 152 of the second connecting end 15 cooperate, and the second fixing member 16 is used to firmly fix the shielded terminal 31 in the mating fixing groove 151. In the complex environment of automobile driving, the vehicle vibrates frequently. If the shielded terminal 31 is not firmly fixed, it is easy to cause the connection to loosen, resulting in interruption or instability of image signal transmission. This design effectively avoids this situation, ensuring that the shielded terminal 31 is stably positioned in the mating fixing groove 151, laying the foundation for reliable transmission of image signals. The through slot 153 on one side of the second connecting terminal 15 mates with the contact spring 311 on the shielding terminal 31. The contact spring 311, located within the through slot 153, contacts the terminal of the target connector. This ensures a good elastic contact between the shielding terminal 31 and the terminal of the target connector. This elastic contact adapts to vibrations and bumps during vehicle operation, maintaining a stable electrical connection. Even in a vibrating environment, the contact spring 311 maintains close contact with the terminal of the target connector, reducing contact resistance and minimizing signal loss and interference during transmission.

[0039] The terminal fixing part 152 is provided with a fixing assembly groove 154, and the fixing assembly groove 154 is provided with an assembly slot 155. The second fixing member 16 is provided with a second fixing pin 161, which is inserted into the fixing assembly groove 154 and is provided with an assembly buckle 162 that engages with the assembly slot 155. One end of the second fixing member 16 is provided with a backstop step 163, and the shielding terminal 31 is provided with an alignment platform 312. The backstop step 163 is used to abut against the alignment platform 312 to prevent the shielding terminal 31 from retracting. The second connecting end 15 is provided with a socket 156 for docking with the shielding terminal 31. In this embodiment, the fixing assembly groove 154 of the terminal fixing part 152 and the second fixing pin 161 of the second fixing member 16 fit tightly together. The second fixing pin 161 is inserted into the fixing mounting slot 154, and the mounting buckle 162 on it engages with the mounting slot 155, ensuring that the second fixing member 16 is securely installed on the terminal fixing part 152. Under the vibration generated by vehicle movement, this prevents the second fixing member 16 from loosening or falling off, ensuring its continued effective fixing effect on the shielding terminal 31. The anti-reverse step 163 at one end of the second fixing member 16 abuts against the alignment platform 312 of the shielding terminal 31, providing a reliable anti-reverse function for the shielding terminal 31. When the vehicle is subjected to external forces such as bumps, this prevents the shielding terminal 31 from moving backward, ensuring the stable position of the shielding terminal 31 within the second connecting end 15. A stable position of the shielding terminal 31 is crucial for the transmission of image signals, preventing signal transmission interruption or interference caused by terminal displacement. The insertion hole 156 of the second connecting end 15 is used to mate with the shielding terminal 31, achieving a stable connection between the shielding coaxial cable 10 and the shielding terminal 31.

[0040] 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 shielded coaxial line, characterized by: It includes, from the inside out, a central conductor, a central insulating layer, an aluminum foil layer, an inner shielding layer, a middle insulating layer, an outer shielding layer, and an outer insulating layer. The central insulating layer covers the middle conductor, the aluminum foil layer covers the central insulating layer, the inner shielding layer and the outer shielding layer are both mesh-like interwoven layers, the inner shielding layer covers the outer diameter of the aluminum foil layer, the middle insulating layer is used for insulation separation between the inner shielding layer and the outer shielding layer, and the outer shielding layer covers the outer shielding layer.

2. The shielded coaxial line of claim 1, wherein: Both the inner and outer shielding layers are woven from tin-plated copper alloy wires, and the braiding coverage is greater than or equal to 90%.

3. The shielded coaxial line of claim 1, wherein: The central insulation layer, intermediate insulation layer and outer insulation layer are all made of halogen-free flame-retardant polyolefin material.

4. A shielded connector characterized by: The shielded coaxial cable according to any one of claims 1 to 3 includes a shielded connector comprising a housing, a power-connecting element, and a shielded connecting element; the housing is provided with a first connecting end and a second connecting end, the power-connecting element is provided at the first connecting end, the second connecting end is located on one side of the first connecting end, and the shielded connecting element is provided at the second connecting end; the power-connecting element is provided with a power-connecting terminal and a zinc alloy sleeve, the zinc alloy sleeve being provided with an insulating core for mounting the power-connecting terminal; the power-connecting terminal is used to connect to the center conductor, and the zinc alloy sleeve is connected to the inner shielding layer; the shielded connecting element is provided with a shielded terminal, one end of which is provided with a shielded connecting wire, the shielded connecting wire being connected to the outer shielding layer.

5. The shielded connector of claim 4, wherein: The first connecting end includes a coaxial and sequentially connected insertion cavity, a fixed cavity, and a wiring cavity. The zinc alloy sleeve includes a sequentially arranged insertion end, a fixed end, and a wiring end. The fixed end is disposed in the fixed cavity, one end of the insertion end extends into the insertion cavity, and the wiring end extends toward the wiring cavity.

6. The shielded connector of claim 5, wherein: The wall of the insertion cavity is provided with a positioning boss, and the positioning boss is provided with a positioning arc groove. The axis of the positioning arc groove is coaxial with the insertion end. The fixed cavity is provided with a reinforcing ring at one end facing the insertion cavity. A sealing groove is provided between the fixed end and the reinforcing ring. A sealing ring is provided on the sealing groove. The fixed cavity is provided with a limiting platform at one end facing the wiring cavity. The wiring end is provided with a limiting ring. One side of the limiting ring is connected to the limiting platform for limiting the zinc alloy sleeve.

7. The shielded connector according to claim 6, characterized in that: A plug-in buckle is provided on one side of the housing. The plug-in buckle is used to fix the connector when it is plugged in. The plug-in buckle includes a front end and a pressing part. The plug-in buckle is provided with a connecting post that connects to the surface of the housing. The pressing part and the front end extend toward both ends of the housing with the connecting post as the center. The front end is provided with a plug-in slot. The plug-in slot is used to fix the connector when it is plugged in.

8. The shielded connector of claim 4, wherein: A fixing slot is provided on one side of the outer shell, one end of the fixing slot is connected to the fixing cavity, and a first fixing member is provided in the fixing slot. The first fixing member is used to be inserted into the first fixing slot and to fix the zinc alloy sleeve in the fixing cavity. The first fixing member is provided with a first fixing pin, and two first fixing pins are arranged opposite each other, forming an alloy fixing groove between the two first fixing pins. The alloy fixing groove is used to fix the zinc alloy sleeve in the fixing cavity. The wall surface of the fixing slot is provided with a pin slot, and the first fixing pin is provided with a pin buckle. The pin slot is used to cooperate with the pin buckle to fix the first fixing pin in the fixing slot.

9. The shielded connector of claim 4, wherein: The second connection end includes a mating fixing groove and a terminal fixing part. The terminal fixing part is provided with a second fixing member, which is used to fix the shielding terminal in the mating fixing groove. A through groove is provided on one side of the second connection end. A contact spring is provided on the side of the shielding terminal facing the through groove. The contact spring is located in the through groove for contacting the terminal of the target connector.

10. The shielded connector of claim 9, wherein: The terminal fixing part is provided with a fixing assembly groove, and the fixing assembly groove is provided with an assembly slot. The second fixing member is provided with a second fixing pin, which is inserted into the fixing assembly groove and is provided with an assembly buckle to engage with the assembly slot. One end of the second fixing member is provided with a backstop step, and the shielding terminal is provided with an alignment plate. The backstop step is used to abut against the alignment plate to prevent the shielding terminal from backing up. The second connecting end is provided with a socket for connecting the shielding terminal.

Images