A radio frequency connector
By employing multiple snap-fit limiting structures in the RF connector, the problem of traditional RF connectors being difficult to adapt to automated production is solved, enabling efficient and precise automated assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MINGLAND NANJING ELECTRONICS CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional RF connectors lack limiting structures, resulting in low efficiency, difficulty in guaranteeing precision and consistency, and difficulty in adapting to automated production.
The system employs multiple snap-fit limiting structures, including snap-fit between the insulator and the outer shell, the engagement of the snap hook and the limiting groove, and the fixing of the sealing ring and retaining ring, to ensure the accurate positioning of each component and adapt to automated production assembly.
It improves the production efficiency, precision and consistency of RF connectors, meets the needs of automated processing, and realizes efficient automated production.
Smart Images
Figure CN224437993U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radio frequency connector technology, and in particular to a radio frequency connector. Background Technology
[0002] Radio frequency (RF) connectors are key components in electronic devices for high-frequency signal transmission, widely used in communication equipment, aerospace, medical equipment, and other fields. With the rapid development of technologies such as 5G communication and the Internet of Things (IoT), the demand for RF connectors has increased dramatically. Currently, traditional RF connectors are assembled manually, resulting in low efficiency, inconsistent quality, and difficulty in ensuring precision. This is because traditional connector structures lack limiting mechanisms, making them incompatible with automated processing and production. Utility Model Content
[0003] The purpose of this invention is to provide an RF connector to solve the problems encountered in the background art.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows:
[0005] A radio frequency connector includes a threaded sleeve, an insulator, and a housing. The threaded sleeve has a hexagonal mounting surface on its outer wall and an internal thread at the top of its inner cavity. The lower part of the outer wall of the housing has anti-slip textures, which are a mesh-like structure. Additionally, in implementation, a crimping tube is included. The crimping tube has a cylindrical structure and clamps the pins to the cable for secure connection.
[0006] The insulator has a pin inserted inside, and the outside of the insulator is fixedly connected to the outer shell. The top of the outer side of the outer shell is sealed to the inner cavity of the screw sleeve, and the middle of the outer side of the outer shell is fixedly connected to the inner cavity of the screw sleeve.
[0007] In the above scheme, the outer wall of the pin is provided with a protrusion, which is an annular stepped structure. The pin is engaged with the inside of the insulator through the protrusion and is coaxially arranged.
[0008] In the above scheme, a limiting groove is formed on the outside of the insulator, and a hook is provided in the inner cavity of the outer shell, which engages with the limiting groove via the hook. As a preferred embodiment, the inner cavity of the outer shell also has an abutment surface that contacts the bottom surface of the insulator. Additionally, a guide surface is provided at the bottom of the central hole of the insulator.
[0009] In the above solution, a sealing groove is provided on the top outer side of the outer shell, and a sealing ring is installed in the sealing groove. The outer shell is sealed to the inner cavity of the threaded sleeve through the sealing ring. An annular groove is provided in the middle of the outer side of the outer shell, and a retaining ring is installed in the annular groove. A retaining groove is provided in the lower part of the inner cavity of the threaded sleeve to accommodate the outer structure of the retaining ring.
[0010] Compared with existing technologies, the advantages of this utility model are as follows: by internally mounting the insulator with a snap-fit pin, the insulator's exterior is snap-fitted and fixed to the outer shell, the top outer side of the outer shell is sealed and connected to the inner cavity of the threaded sleeve, and the middle outer side of the outer shell is snap-fitted and fixed to the inner cavity of the threaded sleeve. Through the adoption of multiple snap-fit limiting structures, the installation of the RF connector is made more standardized, facilitating automated production assembly, thereby improving product production efficiency, precision, and consistency. This makes the RF connector compatible with automated processing, meeting the needs of modern production. Attached Figure Description
[0011] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:
[0012] Figure 1 This is a schematic diagram of the internal structure of the present invention;
[0013] Figure 2 This is a schematic diagram of the external structure of this utility model;
[0014] Figure 3 This is a schematic diagram of the screw sleeve in this utility model;
[0015] Figure 4 This is a schematic diagram of the insulator structure in this utility model;
[0016] Figure 5 This is a schematic diagram of the retaining ring in this utility model;
[0017] Figure 6 This is a schematic diagram of the structure of the insert in this utility model;
[0018] Figure 7 for Figure 6 Enlarged view of section B in the middle;
[0019] Figure 8 This is a schematic diagram of the outer shell structure in this utility model;
[0020] Figure 9 for Figure 8 Enlarged view of section A.
[0021] The following numbers are used in the diagram: 1-Threaded sleeve; 10-Hexagonal mounting surface; 11-Internal thread; 12-Slot; 2-Insulator; 21-Limiting groove; 22-Guide surface; 3-Sealing ring; 4-Snap ring; 5-Pin; 51-Protrusion; 6-Outer shell; 60-Anti-slip texture; 61-Sealing groove; 62-Annular groove; 63-Abutting surface; 64-Hook. Detailed Implementation
[0022] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the utility model will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of this utility model, and therefore only show the relevant components of this utility model.
[0023] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.
[0024] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0025] Example 1, such as Figure 1 and Figure 2 As shown, an RF connector includes a screw sleeve 1, an insulator 2, and a housing 6. (See also...) Figure 3 The outer wall of the threaded sleeve 1 has a hexagonal mounting surface 10 for installation with other equipment and for easy disassembly. The top of the inner cavity of the threaded sleeve 1 has an internal thread 11 for installation via threaded connection. The outer top of the outer shell 6 also has an external thread for threaded installation with the internal thread 11.
[0026] In practice, the screw sleeve 1 is mainly used to achieve mechanical fastening and detachable connection between the RF connector and other equipment or components. Through the threaded engagement, the RF connector can be firmly installed on equipment panels, cable terminals, etc., facilitating the installation, disassembly, and maintenance of the connector, while ensuring the stability of the connection and preventing the RF connector from loosening due to vibration or other factors.
[0027] The lower part of the outer wall of the housing 6 is provided with anti-slip texture 60, which has a mesh structure and provides good anti-slip effect when installed with the screw sleeve 1. In addition, the housing 6 has two dual functions: firstly, it provides mechanical protection for the internal components of the RF connector, preventing physical damage; secondly, as an outer conductor, it acts as a shield, preventing internal RF signals from leaking outwards, while also resisting the influence of external electromagnetic interference on internal signals, ensuring the quality and stability of signal transmission. The housing 6 is generally made of metal materials, such as aluminum alloy or stainless steel, which have sufficient strength and good electromagnetic shielding performance.
[0028] Insulator 2 is composed of an insulating medium and serves to isolate the pin 5 from the housing 6, preventing signal short circuits, ensuring that the electromagnetic field is concentrated around the pin 5, and maintaining the integrity of signal transmission. It is made of a material with low dielectric constant and low dielectric loss, which reduces delay and attenuation during signal transmission and plays a crucial role in the electrical performance of the RF connector.
[0029] In implementation, insulator 2 can be made of polytetrafluoroethylene (PTFE), a common insulating dielectric material with low dielectric constant and low dielectric loss characteristics. For frequencies between 0-8 GHz, polystyrene (PS) can be used as an alternative.
[0030] The internal clip of insulator 2 contains pin 5. For details, please refer to [link / reference]. Figure 6 and Figure 7 The outer wall of the pin 5 is provided with a protrusion 51. The protrusion 51 is a hook-shaped structure and is a soft protrusion. The protrusion 51 is an annular stepped structure. The pin 5 is engaged with the inside of the insulator 2 through the protrusion 51 and is coaxially arranged. When the pin 5 with the protrusion 51 is inserted into the inside of the insulator 2, it will squeeze the internal center hole of the insulator 2 through the protrusion 51, which plays a limiting role.
[0031] Pin 5, as the center conductor, is the main transmission path for radio frequency (RF) signals, responsible for carrying and transmitting RF signals. It is usually made of a high-conductivity metal material, such as a copper alloy, which has good electrical conductivity and mechanical strength to ensure low resistance and low loss during signal transmission, and to maintain a stable electrical connection during repeated insertion and removal.
[0032] The insulator 2 is snapped and fixed to the outer casing 6. For details, please refer to [link / reference]. Figure 4 , Figure 8 , Figure 9 The insulator 2 has a limiting groove 21 on its exterior, and the inner cavity of the outer shell 6 has a hook 64. The outer shell 6 engages with the limiting groove 21 via the hook 64. When the insulator 2 is inserted into the inner cavity of the outer shell 6 from top to bottom, the elastic contraction of the insulator 2 causes the hook 64 to enter the limiting groove 21 and be restricted from movement. At this time, the bottom surface of the hook 64 rests on the bottom surface of the limiting groove 21. As a preferred embodiment, the inner cavity of the outer shell 6 also has an abutment surface 63 that contacts the bottom surface of the insulator 2 to further restrict the position of the insulator 2. The engagement of the hook 64 and the limiting groove 21, along with the abutment surface 63, constitutes the positioning groove during installation.
[0033] In addition, a guide surface 22 is provided at the bottom of the center hole of the insulator 2 to facilitate the insertion of the pin 5 into the center hole of the insulator 2.
[0034] Please see Figure 8In this design, the top outer side of the outer shell 6 is sealed to the inner cavity of the screw sleeve 1, and the middle outer side of the outer shell 6 is snapped and fixed to the inner cavity of the screw sleeve 1.
[0035] In specific implementation, a sealing groove 61 is provided on the top of the outer side of the outer shell 6, and a sealing ring 3 is installed in the sealing groove 61. The outer shell 6 is sealed to the inner cavity of the screw sleeve 1 through the sealing ring 3.
[0036] As a sealing element, the sealing ring 3 primarily functions to prevent external impurities such as dust, moisture, and corrosive gases from entering the RF connector, protecting internal electrical components from environmental factors, thereby ensuring the electrical performance and lifespan of the RF connector. In applications with high environmental sealing requirements, such as outdoor communication equipment and underwater detection equipment, the performance of the sealing ring 3 is crucial.
[0037] An annular groove 62 is provided in the middle of the outer side of the outer casing 6, and a retaining ring 4 is installed in the annular groove 62. Please refer to [link / reference]. Figure 5 The retaining ring 4 is a ring-shaped structure with an opening; please refer to [link / reference]. Figure 1 and Figure 3 The lower part of the inner cavity of the screw sleeve 1 is provided with a groove 12 for accommodating the outer structure of the retaining ring 4. The annular groove 62 corresponds to the position of the groove 12, and the retaining ring 4 is limited by the annular groove 62 and the groove 12.
[0038] The retaining ring 4 is a mechanical fixing component used to fix and position other components, ensuring the accurate relative positions of each component inside the RF connector. It prevents components such as insulator 2 and pin 5 from shifting or loosening during use, enhancing the overall mechanical stability and reliability of the RF connector, especially under external forces such as vibration and impact, ensuring the normal operation of the RF connector.
[0039] Example 2: An RF connector includes a screw sleeve 1, an insulator 2, and a housing 6. In implementation, it also includes a crimping tube, which is a cylindrical structure that presses and fixes the pin 5 to the cable. Therefore, the crimping tube is mainly used to achieve a reliable connection between the pin 5 and the cable conductor.
[0040] Through a crimping process, pin 5 is tightly pressed together with the cable conductor to form a good electrical connection, ensuring stable transmission of radio frequency signals between pin 5 and the cable. The crimping tube is typically made of aluminum or stainless steel, and the material and crimping quality directly affect the reliability of the connection and signal transmission performance.
[0041] Based on the solution in Example 2, the assembly process is as follows:
[0042] Assembling pin 5 with crimping tube: First, insert the conductor portion of the cable into the crimping tube. Then, insert one end of pin 5 into the crimping tube as well. Use a specialized crimping tool to press the crimping tube tightly around pin 5 and the cable conductor, forming a secure electrical connection. This step requires uniform crimping force to ensure low and stable resistance at the connection point.
[0043] Assembly of insulator 2 and pin 5: Pass the pin 5, with the crimped tube attached, through the center hole of insulator 2, so that insulator 2 fits properly on pin 5, ensuring that insulator 2 and pin 5 are coaxial and tightly fitted. In some high-precision RF connectors, specific processes may be used, such as applying insulating adhesive to the contact area between insulator 2 and pin 5, to further enhance the fixing effect and insulation performance between the two.
[0044] Installation of retaining ring 4: Place the pin assembly with insulator 2 installed into the corresponding positioning groove inside the housing 6, and then install retaining ring 4 into the annular groove 62 on the housing 6. Retaining ring 4 will limit and fix insulator 2 and pin assembly, preventing them from moving axially or radially inside the housing 6, and ensuring the accurate position of each component.
[0045] Installation of sealing ring 3: Place sealing ring 3 inside the sealing groove of housing 6. The shape and size of sealing ring 3 need to be precisely matched with the sealing groove to ensure that it can completely fill the sealing groove and achieve a good sealing effect. The installation position of sealing ring 3 must be accurate to avoid twisting, misalignment, or other issues.
[0046] Screw insert 1 installation: Screw the screw insert 1 into the threaded hole on the housing 6. The threads of the screw insert 1 and the threads of the housing 6 must be precisely matched to ensure a smooth and secure screwing process. After the screw insert 1 is installed, the RF connector can be connected and fixed to other devices or components through the screw insert 1.
[0047] In summary, by inserting the pin 5 inside the insulator 2, securing the outside of the insulator 2 to the outer shell 6, sealing the top of the outer side of the outer shell 6 to the inner cavity of the threaded sleeve 1, and securing the middle of the outer side of the outer shell 6 to the inner cavity of the threaded sleeve 1, the installation of the RF connector is made more standardized through the use of multiple snap-fit limiting structures. This facilitates automated production assembly, thereby improving product production efficiency, precision, and consistency, making the RF connector compatible with automated processing, and meeting the needs of modern production.
[0048] During assembly in the production workshop, cables assembled using automated RF connectors can achieve a frequency VSWR of ≤1.2 within 7.2GHz, enabling fully automated assembly of cables and RF connectors. A chamfer can be added to the tail of the center conductor of the RF connector to increase the stability of automated crimping assembly.
[0049] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A radio frequency connector, characterized by: It includes a screw sleeve (1), an insulator (2) and a shell (6). The insulator (2) has a pin (5) inserted inside. The outside of the insulator (2) is fixedly connected to the shell (6). The top of the outer side of the shell (6) is sealed to the inner cavity of the screw sleeve (1). The middle of the outer side of the shell (6) is fixedly connected to the inner cavity of the screw sleeve (1). The outer wall of the pin (5) is provided with a protrusion (51), which is a ring-shaped stepped structure. The pin (5) is engaged with the inside of the insulator (2) through the protrusion (51) and is coaxially arranged. The insulator (2) has a limiting groove (21) on its outside, and the outer shell (6) has a hook (64) in its inner cavity. The outer shell (6) is engaged with the limiting groove (21) by the hook (64).
2. A radio frequency connector as claimed in claim 1, characterised in that: The inner cavity of the outer shell (6) is also provided with an abutment surface (63) that contacts the bottom surface of the insulator (2).
3. The radio frequency connector of claim 1, wherein: The insulator (2) has a guide surface (22) at the bottom of the center hole.
4. The radio frequency connector of claim 1, wherein: The outer top of the outer shell (6) is provided with a sealing groove (61), and a sealing ring (3) is installed in the sealing groove (61). The outer shell (6) is sealed to the inner cavity of the screw sleeve (1) through the sealing ring (3).
5. The radio frequency connector of claim 1, wherein: An annular groove (62) is provided in the middle of the outer side of the outer shell (6), and a retaining ring (4) is installed in the annular groove (62). A retaining groove (12) is provided in the lower part of the inner cavity of the screw sleeve (1) to accommodate the outer structure of the retaining ring (4).
6. The radio frequency connector of claim 1, wherein: The outer wall of the threaded sleeve (1) is provided with a hexagonal mounting surface (10), and the top of the inner cavity of the threaded sleeve (1) is provided with an internal thread (11).
7. The radio frequency connector of claim 1, wherein: The lower part of the outer wall of the outer shell (6) is provided with anti-slip texture (60), which is a grid structure.
8. The radio frequency connector of claim 1, wherein: It also includes a crimping tube, which is a cylindrical structure that presses and fixes the pin (5) to the cable.