Double-core waterproof radio frequency connector
By designing a dual-core waterproof RF connector and adopting a reasonable component structure and waterproof design, the problems of high cost and complicated installation of traditional RF connectors have been solved. This enables stable connection of multiple antennas in small devices while providing waterproof functionality, reducing equipment costs and improving signal strength.
Patent Information
- Application Number
- CN202520347479.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Traditional RF connectors are expensive and cumbersome to install, making it difficult to connect multiple antennas simultaneously in small devices, and they lack waterproofing.
A dual-core waterproof RF connector was designed, which uses components such as a screw sleeve, outer shell, waterproof ring, inner conductor, and large insulator. The inner conductor is divided by embedding a large insulator, and the use of silicone rubber waterproof ring and reasonable internal cavity design ensures stable connection of the center pin and waterproof performance.
It achieves low cost and easy disassembly and maintenance, while being able to connect two antennas to one connection port, ensuring signal stability and waterproof performance, with strong adaptability and reduced equipment cost.
Smart Images

Figure CN223978190U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of antenna technology, and in particular to a dual-core waterproof radio frequency connector. Background Technology
[0002] Radio frequency (RF) connectors are separable components typically mounted on cables or equipment for electrical connections in transmission line systems. As can be seen, they possess the common characteristic of connectors as "separable components." RF connectors connect to coaxial cables, microstrip lines, or other RF transmission lines to achieve electrical connections, separations, or conversions between different types of transmission lines. They are mechatronic products, acting as bridges.
[0003] Radio frequency (RF) connectors are mainly divided into three categories: RF coaxial connectors, RF triaxial connectors, and dual-core symmetrical RF connectors. RF coaxial connectors are mainly used to transmit transverse electromagnetic waves (TEM waves); RF triaxial connectors are mainly used in applications requiring higher shielding efficiency to transmit transverse electromagnetic waves (TEM waves) or electromagnetic pulse waves; dual-core symmetrical RF connectors are mainly used to transmit digital signals with relatively low speeds.
[0004] The processing methods used for various components during manufacturing determine the mechanical and electrical properties of RF connectors. While considering mechanical properties, the quantity and scale of production must also be taken into account. Investigating why specific performance requirements are not met is crucial; such analysis helps prevent future errors. On the other hand, the smaller the RF connector, the more difficult and costly it is to manufacture, and the lower its precision and error. Future industrial applications will see an increasing demand for small, high-quality, and inexpensive electronic components.
[0005] Traditional N-type RF connectors are mostly coaxial connectors, which often need to be installed one-to-one with antennas and equipment in practical applications. However, this increases costs and makes installation cumbersome. Utility Model Content
[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a dual-core waterproof RF connector that reduces costs while providing waterproof functionality, thus greatly improving practicality.
[0007] To achieve the above objectives, the following technical solution is adopted:
[0008] A dual-core waterproof radio frequency connector includes a main body, which comprises a threaded sleeve, a waterproof ring, a shell, two inner conductors, and a large insulator. The right side of the shell has a threaded sleeve. Because the shell is made of metal, it needs to be separated from the inner conductors by an embedded large insulator to prevent short circuits. The two inner conductors are respectively embedded inside the large insulator. The large insulator has an inner cavity, including a first inner cavity and a second inner cavity, wherein the first cavity is deeper than the second cavity. The two inner conductors are respectively placed in the first and second cavities inside the large insulator. The body includes two tail tubes, two center pins, two limiting components, two small insulators, and a connecting tube. The two center pins include a male center pin and a female center pin. The top of the center pin is embedded in the limiting component and the small insulator, respectively, and then installed into the connecting copper tube to prevent the center pin from shaking and to insulate it from the connecting copper tube. Finally, the tail tubes are electrically connected and fixed to the connecting tube to assemble the inner conductors. The two inner conductors are arranged as follows: the male inner conductor is assembled from the male pins and placed in the second inner cavity of the large insulator; the female inner conductor is assembled from the female center pins and placed in the first inner cavity of the large insulator.
[0009] Furthermore, the two connecting copper tubes include a male connecting copper tube and a female connecting copper tube, which correspond to the assembly of the male center pin and the female center pin, respectively. The connecting copper tubes are electrically connected and fixed to the tail tube.
[0010] Furthermore, the tail tube is provided with two windows, namely a first window and a second window. The first window is located on the left side for electrical connection between the radio frequency cable braid and the tail tube, and the second window is located in the middle for electrical connection between the radio frequency cable core and the center pin.
[0011] Furthermore, to cushion the impact and reduce damage, and for waterproofing, a waterproof ring is provided between the outer shell and the threaded sleeve. Because silicone rubber is oil-resistant, corrosion-resistant, and has good high and low temperature resistance, it can enhance the service life of the waterproof ring; therefore, the waterproof ring is made of silicone rubber.
[0012] Furthermore, the two inner chambers of the large insulator are of different depths because the large insulator is a near-cylindrical shape, which is vertically divided into two halves. The upper half is the first inner chamber, and the lower half is the second chamber. The lower half is shorter than the upper half, forming a semi-circular groove. This is to prevent mistaken identification and to accurately position the center pin for electrical connection when connecting with equipment.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1) Waterproof, made of high-temperature resistant materials, not easily damaged when welding radio frequency cables, and has a reasonable design, compact structure, easy disassembly and maintenance, and strong practicality.
[0015] 2) The center pin is embedded in the limiting component and the small insulator, which can ensure that the center pin will not shake at will, nor will it short-circuit with the outer shell or another center pin, thus ensuring the stability of signal transmission.
[0016] 3) It enables the device to use two antennas even with only one connection port, providing more options for antenna and device design, improving device performance, and ensuring the strength of device signals. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 for Figure 1 Exploded view;
[0019] Figure 3 This is an exploded view of the inner conductor;
[0020] The following are explanations of the labels in the attached diagram:
[0021] 1—Screw sleeve; 2—Outer shell;
[0022] 3—Inner conductor; 4—Waterproof ring;
[0023] 5—Large insulator; 31—Tail tube;
[0024] 32—Center pin; 33—Limiting element;
[0025] 34—Small insulator; 35—Connecting copper tube;
[0026] 321—Male center pin; 322—Female center pin;
[0027] 351—Male connector copper pipe; 352—Female connector copper pipe; Detailed Implementation
[0028] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0029] Reference Figures 1 to 3 As shown, a dual-core waterproof radio frequency connector includes a main body, which includes a screw sleeve 1, a waterproof ring 4, a shell 2, two inner conductors 3, and a large insulator 5. The right side of the shell 2 is provided with a screw sleeve 1. Since the shell 2 is made of metal, it needs to be separated from the inner conductors 3 by embedding the large insulator 5 to prevent short circuits. The two inner conductors 3 are respectively embedded inside the large insulator 5.
[0030] The large insulator 5 has an internal cavity, which includes a first internal cavity and a second internal cavity, wherein the first cavity is deeper than the second cavity; the two inner conductors 3 are respectively placed in the first cavity and the second cavity inside the large insulator 5;
[0031] The two inner conductors 3 include two tail tubes 31, two center pins 32, two limiting members 33, two small insulators 34, and a connecting tube 35; the two center pins 32 include a male center pin 321 and a female center pin 322. The top of the center pin 32 is respectively embedded in the limiting member 33 and the small insulator 34 and then installed into the connecting copper tube 35, so that the center pin 32 does not move and is insulated from the connecting copper tube 35. Finally, the tail tube 31 is electrically connected and fixed to the connecting tube 35, and the inner conductors 3 are assembled.
[0032] The two inner conductors 3 are arranged as follows: the male inner conductor, assembled from the male center pin 321, is placed in the second inner cavity of the large insulator 5; and the female inner conductor, assembled from the female center pin 322, is placed in the first inner cavity of the large insulator 5.
[0033] The two connecting copper tubes 35 include a male connecting copper tube 351 and a female connecting copper tube 352, which correspond to the assembly of the male center pin 321 and the female center pin 322, respectively. The connecting copper tubes 35 are electrically connected and fixed to the tail tube 31.
[0034] The tail tube 31 is provided with two windows, namely a first window and a second window. The first window is located on the left side for electrical connection between the radio frequency cable braid and the tail tube 31, and the second window is located in the middle for electrical connection between the radio frequency cable core and the center pin 32.
[0035] In this embodiment, a waterproof ring 4 is provided between the outer shell 2 and the screw sleeve 1.
[0036] In this embodiment, the waterproof ring 4 is made of silicone rubber.
[0037] In this embodiment, the large insulator 5 is a cylindrical shape, which is vertically divided into two halves. The upper half is the first inner chamber, and the lower half is the second chamber. The lower half is shorter than the upper half, forming a semi-circular groove. This is to prevent mistaken connection and to accurately position the center pin 32 for electrical connection when connecting with equipment.
[0038] This invention allows two antennas to be connected through a single RF connector, thus solving the problem of limited space in equipment that prevents the installation of multiple antennas. This enables the equipment to use two antennas even with only one connection port, improving equipment performance, ensuring signal strength, and providing waterproof functionality. It is highly adaptable, easy to disassemble and assemble, convenient for maintenance, low in cost, and highly practical.
Claims
1. A dual core waterproof RF connector characterized by, Including the main body, the main body includes the screw sleeve, waterproof ring, shell, two inner conductors and big insulator, the shell right side is equipped with screw sleeve, inside is equipped with inner chamber, inner chamber is used to place big insulator, big insulator inside is equipped with inner chamber, inner chamber includes first inner chamber and second inner chamber, wherein first chamber than second chamber deep, two inner conductors are placed respectively in big insulator inside first chamber and second chamber.
2. A dual-chip waterproof radio frequency connector according to claim 1, characterized in that, The waterproof ring is made of silicone rubber.
3. A dual-chip waterproof RF connector according to claim 2, characterized in that, The waterproof ring is made of silicone rubber.
4. The dual-chip waterproof RF connector of claim 1, wherein, The two inner conductors include two tail pipes, two center pins, two limiters, two small insulators and a connecting tube, the two center pins include a male center pin and a female center pin, the top end of the center pin is embedded in the limiter and the small insulator respectively, and then is loaded into the connecting copper pipe, so that the center pin is not shaken in the connecting copper pipe and is insulated with the connecting copper pipe, finally the tail pipe is electrically connected with the connecting pipe to fix the inner conductor.
5. A dual-chip waterproof RF connector according to claim 4, wherein, The two inner conductors, assembled by the male center pin, are male inner conductors, placed in the second inner chamber of the big insulator, and assembled by the female center pin, are female inner conductors, placed in the first inner chamber of the big insulator.
6. A dual-chip waterproof RF connector according to claim 4, wherein, The two connecting copper pipes include a male connecting copper pipe and a female connecting copper pipe, corresponding to the male center pin and the female center pin respectively.
7. A dual-chip waterproof radio frequency connector according to claim 4, characterized in that, The tail pipe is provided with two windows, namely a first window and a second window, the first window is located on the left side for electrically connecting the radio frequency cable braid with the tail pipe, and the second window is located in the middle for electrically connecting the radio frequency cable core with the center pin.