Coaxial circular connector
Patent Information
- Application Number
- CN202522380736.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-11-10
AI Technical Summary
[0002]在通信设备、车载电子等领域，同轴圆形连接器作为信号传输的关键组件，需与同轴电缆配合实现稳定的低频/高频信号传输，其性能直接影响整个通信系统的可靠性；当前主流同轴电缆多采用内导体、发泡绝缘层、铝箔屏蔽层、外护套的结构，其中发泡绝缘层用于维持电缆阻抗稳定，铝箔屏蔽层用于减少电磁干扰，然而这种结构在与连接器装配过程中，暴露出显著的技术痛点，成为制约信号传输质量的关键因素；
1、该同轴圆形连接器，有效解决了传统同轴电缆铝箔屏蔽层与发泡绝缘层黏连难剥离的问题，无需在装配时剥离铝箔，避免了铝箔撕裂残留导致的内导体插针与外导体短路风险，同时省去发泡绝缘层裁切与适配步骤，简化了连接器与电缆的装配流程，降低了人工操作难度，显著提升成品合格率，尤其适配批量生产场景。
Smart Images
Figure CN224890083U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical connector technology, and in particular to a coaxial circular connector. Background Technology
[0002] In fields such as communication equipment and automotive electronics, coaxial circular connectors are key components for signal transmission. They need to work with coaxial cables to achieve stable low-frequency / high-frequency signal transmission, and their performance directly affects the reliability of the entire communication system. Currently, most mainstream coaxial cables adopt a structure of inner conductor, foam insulation layer, aluminum foil shielding layer, and outer sheath. The foam insulation layer is used to maintain the stability of cable impedance, and the aluminum foil shielding layer is used to reduce electromagnetic interference. However, this structure exposes significant technical pain points during the assembly with connectors, becoming a key factor restricting the quality of signal transmission. Specifically, due to the manufacturing process characteristics, the aluminum foil shielding layer and the foam insulation layer of existing coaxial cables are prone to forming a tight bond. When assembling the connector, the aluminum foil shielding layer must be peeled off first before the inner conductor of the cable can be connected to the inner conductor pin of the connector. However, in actual operation, the aluminum foil and the foam insulation layer have a high bonding strength, and the aluminum foil is very easy to tear or leave residue during the peeling process, which may even cause damage to the surface of the foam insulation layer. The residual aluminum foil fragments may enter the connector and cause an electrical short circuit between the inner conductor pin and the outer conductor. Therefore, an insulating sheet is designed and integrated into the mating structure of the coaxial circular connector and the cable. The integrated structure of the insulating sheet eliminates the need for aluminum foil peeling, avoids adhesion damage, simplifies the assembly process, and improves the yield of finished products. It has significant technical value and application prospects. Utility Model Content
[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a coaxial circular connector that can solve the above-mentioned problem.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a coaxial circular connector, comprising a connector body, wherein the connector body is a cylindrical hollow structure, and a cable connection end is provided at the right end of the connector body, wherein the cable connection end is a hollow structure; The cable connection end is equipped with a cable connection mechanism, and the left end of the connector body is equipped with an outer conductor, which is a hollow cylindrical structure. The outer conductor has a conductor connection mechanism inside, and the connector body has a sealing mechanism.
[0005] Preferably, the cable connection mechanism includes a protrusion, which is fixedly connected to the outside of the cable connection end, and a cable crimping sleeve is disposed on the cable connection end, the cable crimping sleeve having a hollow structure; The inner side of the cable crimp sleeve is fixedly connected to the protrusion.
[0006] Preferably, the conductor connection mechanism includes a mounting groove, which is located on the right side of the outer conductor. An insulator is fixedly connected inside the mounting groove. The insulator has a hollow structure inside and its left side is open.
[0007] Preferably, the outer conductor has an inner hole, and an inner conductor pin is fixedly connected inside the inner hole. The inner conductor pin has a cylindrical structure, and the right end of the inner conductor pin extends into the interior of the insulator.
[0008] Preferably, the left end of the inner conductor pin has a cable groove, the right end of the inner conductor pin has a conductor groove, and the right end of the inner conductor pin has four openings.
[0009] Preferably, the connector body has a foam layer placement groove and a fixing groove on the left side corresponding to the inner hole, with the fixing groove located at the left end of the foam layer placement groove; Four cutting blades and four insulating pry bars are embedded in the fixing groove.
[0010] Preferably, the sealing mechanism includes a sealing groove, which is formed on the left edge of the connector body, and a sealing ring is fixedly connected to the sealing groove.
[0011] Preferably, the outer conductor has an external thread on its outer side.
[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This coaxial circular connector effectively solves the problem of difficult peeling of the aluminum foil shielding layer and foam insulation layer in traditional coaxial cables. It eliminates the need to peel off the aluminum foil during assembly, avoiding the risk of short circuit between the inner conductor pin and the outer conductor caused by aluminum foil tear residue. At the same time, it eliminates the steps of cutting and adapting the foam insulation layer, simplifies the assembly process of the connector and cable, reduces the difficulty of manual operation, and significantly improves the finished product qualification rate, especially suitable for mass production scenarios.
[0013] 2. This coaxial circular connector uses a long insulating sheet instead of aluminum foil and foam insulation. Combined with the coaxiality guarantee of the connector body, the electrical insulation effect of the insulator, and the protective effect of the sealing mechanism, it can more stably maintain the signal transmission impedance, reduce return loss fluctuations caused by aluminum foil residue and foam layer damage, and enhance signal shielding stability and environmental adaptability. It ensures that the connector can still achieve low-loss and stable signal transmission in humid and dusty conditions, and extend the service life of the overall communication system. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a front view of a coaxial circular connector according to the present invention; Figure 2 This is a side view of a coaxial circular connector according to the present invention; Figure 3 This is a schematic diagram of a coaxial circular connector according to the present invention; Figure 4 This is a cross-sectional schematic diagram of a coaxial circular connector according to the present invention; Figure 5 This is a cross-sectional schematic diagram of the connector of this utility model; Figure 6 This utility model Figure 5 Enlarged view of point A; Figure 7 This is a schematic diagram of the inner conductor assembly of this utility model.
[0015] Reference numerals: 1. Connector body; 2. Cable connection end; 3. Outer conductor; 4. Inner hole; 5. Mounting groove; 6. Foam layer placement groove; 7. Fixing groove; 8. Cutting tool; 9. Insulating tab; 10. Sealing groove; 11. Sealing ring; 12. Cable crimp sleeve; 13. Protrusion; 14. Inner conductor pin; 15. Cable connection groove; 16. Conductor connection groove; 17. Opening; 18. Insulator; 19. External thread. Detailed Implementation
[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0018] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0020] Please see Figure 1-7 This utility model provides a technical solution: a coaxial circular connector, including a connector body 1, the connector body 1 is a cylindrical hollow structure, and the right end of the connector body 1 has a cable connection end 2, the cable connection end 2 is a hollow structure; A cable connection mechanism is provided on the cable connection end 2, and an outer conductor 3 is provided on the left end of the connector body 1. The outer conductor 3 is a hollow cylindrical structure. The outer conductor 3 is equipped with a conductor connection mechanism inside, and the connector body 1 is equipped with a sealing mechanism; The connector body 1 serves as the core support frame of the entire connector. Its cylindrical hollow structure provides installation space for the internal components while ensuring the coaxiality of the overall structure and preventing impedance changes caused by structural misalignment during signal transmission. The cable connection end 2 on the right end adopts a hollow design, which facilitates the insertion of the cable end and docking with the internal components. The cable connection mechanism is used to securely connect the cable to the connector body 1 and prevent the cable from falling off or loosening under conditions such as vibration and pulling. The outer conductor 3 on the left end has a hollow cylindrical structure. On the one hand, it serves as the outer loop for signal transmission, forming a complete signal shielding channel with the conductor of the opposite connector to reduce external electromagnetic interference. On the other hand, its internal space provides an installation base for the conductor connection mechanism, ensuring the coaxiality of the inner conductor assembly and the outer conductor 3, and guaranteeing stable signal transmission. The sealing mechanism is used to form a seal at the connection point between the connector and the mating equipment or cable, preventing dust, moisture and other impurities from entering the connector, avoiding impurities from affecting conductivity or causing component corrosion, and extending the connector's service life. Furthermore, the cable connection mechanism includes a protrusion 13, which is fixedly connected to the outside of the cable connection end 2. The cable connection end 2 has a cable crimping sleeve 12, which is a hollow structure. The inner side of the cable crimp sleeve 12 is fixedly connected to the protrusion 13; The protrusion 13 in the cable connection mechanism is fixed on the outside of the cable connection end 2. Its function is to provide a positioning and fixing support point for the cable crimp sleeve 12, ensuring the relative position of the cable crimp sleeve 12 and the cable connection end 2 is stable. The cable crimp sleeve 12 adopts a hollow structure. During assembly, the cable end is first passed through the hollow cavity of the cable crimp sleeve 12 so that the shielding layer, insulation layer and other structures of the cable are aligned with the corresponding parts of the cable connection end 2. Subsequently, radial pressure is applied to the cable crimping sleeve 12 using a special crimping tool, causing the cable crimping sleeve 12 to undergo plastic deformation. Its inner side is tightly fitted and fixed to the protrusion 13, while its outer side is tightly engaged with the outer sheath and shielding layer of the cable. This crimping method can firmly connect the cable to the cable connection end 2, preventing axial tensile displacement of the cable during use. On the other hand, the fixed fit between the cable crimping sleeve 12 and the protrusion 13 ensures the conductive continuity between the cable and the connector body 1, avoiding increased contact resistance due to loose connection, which would affect signal transmission efficiency. It is especially suitable for working environments with frequent vibration. Furthermore, the conductor connection mechanism includes a mounting groove 5, which is located on the right side of the outer conductor 3. An insulator 18 is fixedly connected inside the mounting groove 5. The insulator 18 has a hollow structure inside and is open on the left side. The outer conductor 3 has an inner hole 4 inside, and an inner conductor pin 14 is fixedly connected inside the inner hole 4. The inner conductor pin 14 has a cylindrical structure and its right end extends into the interior of the insulator 18. The inner conductor pin 14 has a cable groove 15 on the left end and a conductor groove 16 on the right end. The inner conductor pin 14 also has four openings 17 on the right end. The connector body 1 has a foam layer placement groove 6 and a fixing groove 7 on the left side corresponding to the inner hole 4. The fixing groove 7 is at the left end of the foam layer placement groove 6. Four cutting blades 8 and four insulating pry bars 9 are embedded in the fixing groove 7; In the conductor connection mechanism, the mounting groove 5 on the right side of the outer conductor 3 is used to position and fix the insulator 18, ensuring that the relative position of the insulator 18 and the outer conductor 3 remains unchanged. The insulator 18 adopts a hollow structure with an open left side, which provides a space for the right end of the inner conductor pin 14 and can also achieve electrical insulation between the inner conductor pin 14 and the outer conductor 3, avoiding short circuits between the two and affecting signal transmission. The inner hole 4 inside the outer conductor 3 is used to fix the inner conductor pin 14, ensuring the coaxiality of the cylindrical structure of the inner conductor pin 14 and the outer conductor 3, and reducing impedance fluctuations during signal transmission. The cable groove 15 at the left end of the inner conductor pin 14 is used to insert the inner conductor of the cable, realizing the conductive connection between the inner conductor of the cable and the inner conductor pin 14; the conductor groove 16 at the right end is used to mate with the inner conductor of the opposite connector. The four openings 17 allow the right end of the inner conductor pin 14 to have a certain elasticity, so that it can fit tightly with the inner conductor of the opposite end through slight deformation during mating, reducing contact resistance; the four cutting blades 8 on the fixing groove 7 are used to precisely cut the cable during cable assembly, ensuring that the insulation layer length meets the assembly requirements; the four insulating tabs 9 place the cut foamed insulation layer of the cable into the foamed layer placement groove 6, ensuring that the cable insulation structure is compatible with the internal structure of the connector; the foamed layer placement groove 6 inside the connector body 1 is used to place the cut foamed insulation layer of the cable, ensuring that the cable insulation structure is compatible with the internal structure of the connector; enhancing the insulation effect and preventing signal leakage or interference; Furthermore, the sealing mechanism includes a sealing groove 10, which is formed on the left edge of the connector body 1, and a sealing ring 11 is fixedly connected to the sealing groove 10. The core of the sealing mechanism is to achieve the sealing function through the cooperation of the sealing groove 10 and the sealing ring 11. The sealing groove 10 is opened at the left edge of the connector body 1, and its shape and size match the sealing ring 11, providing a groove for the sealing ring 11 to be fixedly installed, preventing the sealing ring 11 from shifting or falling off during assembly or use. The sealing ring 11 is fixed in the sealing groove 10. When the connector is assembled with the docking equipment or other components, the docking surface will apply a certain squeezing pressure to the sealing ring 11, causing the sealing ring 11 to undergo elastic deformation. Its surface is tightly attached to the docking surface to form a continuous sealing contact surface. This elastic deformation can fill the tiny gap between the connector and the mating parts, effectively preventing dust, moisture, oil and other impurities from the external environment from entering the connector. If impurities enter the interior, it may cause a decrease in the insulation performance between the inner conductor pin 14 and the outer conductor 3, or cause corrosion and oxidation of the conductive parts, affecting the stability of signal transmission and the service life of the connector. Through the sealing effect of the sealing ring 11, the environmental adaptability of the connector can be significantly improved, ensuring that it can still work stably under harsh conditions such as humidity and dust. Furthermore, an external thread 19 is provided on the outer side of the outer conductor 3; The external thread 19 on the outer side of the outer conductor 3 is mainly used to achieve threaded connection and fixation between the connector and the docking equipment or component.
[0021] Working principle: The protrusion 13 in the cable connection mechanism is fixed on the outside of the cable connection end 2. Its function is to provide a positioning and fixing support point for the cable crimp sleeve 12, ensuring the relative position of the cable crimp sleeve 12 and the cable connection end 2 is stable. The cable crimp sleeve 12 adopts a hollow structure. During assembly, the cable end is first passed through the hollow cavity of the cable crimp sleeve 12, so that the shielding layer, insulation layer and other structures of the cable are aligned with the corresponding parts of the cable connection end 2. Subsequently, radial pressure is applied to the cable crimping sleeve 12 using a special crimping tool, causing the cable crimping sleeve 12 to undergo plastic deformation. Its inner side is tightly fitted and fixed to the protrusion 13, while its outer side is tightly engaged with the outer sheath and shielding layer of the cable. This crimping method can firmly connect the cable to the cable connection end 2, preventing axial tensile displacement of the cable during use. On the other hand, the fixed fit between the cable crimping sleeve 12 and the protrusion 13 ensures the conductive continuity between the cable and the connector body 1, avoiding increased contact resistance due to loose connection, which would affect signal transmission efficiency. It is especially suitable for working environments with frequent vibration. In the conductor connection mechanism, the mounting groove 5 on the right side of the outer conductor 3 is used to position and fix the insulator 18, ensuring that the relative position of the insulator 18 and the outer conductor 3 remains unchanged. The insulator 18 adopts a hollow structure with an open left side, which provides a space for the right end of the inner conductor pin 14 and can also achieve electrical insulation between the inner conductor pin 14 and the outer conductor 3, avoiding short circuits between the two and affecting signal transmission. The inner hole 4 inside the outer conductor 3 is used to fix the inner conductor pin 14, ensuring the coaxiality of the cylindrical structure of the inner conductor pin 14 and the outer conductor 3, and reducing impedance fluctuations during signal transmission. The cable groove 15 at the left end of the inner conductor pin 14 is used to insert the inner conductor of the cable, realizing the conductive connection between the inner conductor of the cable and the inner conductor pin 14; the conductor groove 16 at the right end is used to mate with the inner conductor of the opposite connector. The four openings 17 allow the right end of the inner conductor pin 14 to have a certain elasticity, so that it can fit tightly with the inner conductor of the opposite end through slight deformation during mating, reducing contact resistance; the four cutting blades 8 on the fixing groove 7 are used to precisely cut the cable during cable assembly, ensuring that the insulation layer length meets the assembly requirements; the four insulating tabs 9 place the cut foamed insulation layer of the cable into the foamed layer placement groove 6, ensuring that the cable insulation structure is compatible with the internal structure of the connector; the foamed layer placement groove 6 inside the connector body 1 is used to place the cut foamed insulation layer of the cable, ensuring that the cable insulation structure is compatible with the internal structure of the connector; enhancing the insulation effect and preventing signal leakage or interference; The core of the sealing mechanism is to achieve the sealing function through the cooperation of the sealing groove 10 and the sealing ring 11. The sealing groove 10 is opened at the left edge of the connector body 1, and its shape and size match the sealing ring 11, providing a groove for the sealing ring 11 to be fixedly installed, preventing the sealing ring 11 from shifting or falling off during assembly or use. The sealing ring 11 is fixed in the sealing groove 10. When the connector is assembled with the docking equipment or other components, the docking surface will apply a certain squeezing pressure to the sealing ring 11, causing the sealing ring 11 to undergo elastic deformation. Its surface is tightly attached to the docking surface to form a continuous sealing contact surface. This elastic deformation can fill the tiny gap between the connector and the mating parts, effectively preventing dust, moisture, oil and other impurities from the external environment from entering the connector. If impurities enter the interior, it may cause a decrease in the insulation performance between the inner conductor pin 14 and the outer conductor 3, or cause corrosion and oxidation of the conductive parts, affecting the stability of signal transmission and the service life of the connector. Through the sealing effect of the sealing ring 11, the environmental adaptability of the connector can be significantly improved, ensuring that it can still work stably under harsh conditions such as humidity and dust.
[0022] Structural Description: The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A coaxial circular connector, comprising a connector body (1), characterized in that: The connector body (1) is a cylindrical hollow structure, and a cable connection end (2) is provided at the right end of the connector body (1). The cable connection end (2) is a hollow structure. A cable connection mechanism is provided on the cable connection end (2), and an outer conductor (3) is provided on the left end of the connector body (1). The outer conductor (3) is a hollow cylindrical structure. The outer conductor (3) is provided with a conductor connection mechanism inside, and the connector body (1) is provided with a sealing mechanism.
2. A coaxial circular connector according to claim 1, characterized in that: The cable connection mechanism includes a protrusion (13), which is fixedly connected to the outside of the cable connection end (2). The cable connection end (2) is equipped with a cable crimping sleeve (12), which is a hollow structure. The inner side of the cable crimp sleeve (12) is fixedly connected to the protrusion (13).
3. A coaxial circular connector according to claim 2, characterized in that: The conductor connection mechanism includes a mounting groove (5), which is located on the right side of the outer conductor (3). An insulator (18) is fixedly connected inside the mounting groove (5). The insulator (18) has a hollow structure inside and its left side is open.
4. A coaxial circular connector according to claim 3, characterized in that: The outer conductor (3) has an inner hole (4) inside, and an inner conductor pin (14) is fixedly connected inside the inner hole (4). The inner conductor pin (14) has a cylindrical structure, and the right end of the inner conductor pin (14) extends into the interior of the insulator (18).
5. A coaxial circular connector according to claim 4, characterized in that: The inner conductor pin (14) has a cable groove (15) on its left end, a conductor groove (16) on its right end, and four openings (17) on its right end.
6. A coaxial circular connector according to claim 5, characterized in that: The connector body (1) has a foam layer placement groove (6) and a fixing groove (7) on the left side of the inner hole (4). The fixing groove (7) is located at the left end of the foam layer placement groove (6). Four cutting blades (8) and four insulating pry bars (9) are embedded in the fixing groove (7).
7. A coaxial circular connector according to claim 6, characterized in that: The sealing mechanism includes a sealing groove (10), which is located on the left edge of the connector body (1), and a sealing ring (11) is fixedly connected to the sealing groove (10).
8. A coaxial circular connector according to claim 7, characterized in that: The outer conductor (3) is provided with an external thread (19) on its outer side.