Radio frequency connector for low-loss antenna
By setting the plug-in end and low-loss media inner core bushing in the radio frequency connector, inserting the inner core of the cable directly and fixing it with the pressure sleeve, the problems of unstable conduction and large loss of traditional connectors are solved, and the low-loss Loss, reliable electrical performance and simple structural effect.
Patent Information
- Application Number
- CN202323540226.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-25
AI Technical Summary
When traditional radio frequency connectors for antennas are connected to cables, the contact between the inner core of the cable and the pins is unstable, resulting in large conduction losses, which cannot meet the electrical performance requirements, resulting in product scrapping.
A radio frequency connector for low-loss antenna is designed. By setting a plug-in end and inner core bushing in the connector housing, the inner core of the cable is directly inserted into the connector inside and fixed by the pressing sleeve. , replaces cable cavity and improves contact stability and strength.
It effectively reduces the transmission loss of the connector, improves electrical performance, is simple in structure, low in cost and reliable, ensuring the stability and strength of the connection.
Smart Images
Figure CN222191269U_ABST
Abstract
Description
Technical Field
[0001] This article belongs to the technical field of radio frequency connectors, and specifically relates to a radio frequency connector for low-loss antennas. Background Art
[0002] RF coaxial connectors are usually considered to be a component installed on cables or instruments. As a component for electrical connection or separation of transmission lines, it belongs to mechatronics products. Simply put, it mainly plays a bridging role.
[0003] Through the joint efforts of experts from various countries, RF coaxial connectors have formed an independent and complete professional system and become an important part of the connector family. They are an indispensable key component of the coaxial transmission system. The RF coaxial connector development technology in the United States, Britain, France and other countries is in a leading position. Its design, production, testing and use technologies have been integrated and perfected. Not only has a complete standard system been formed, but also the raw materials, transmission materials, testing systems, assembly tools, etc. have been standardized and professionalized and mass-produced.
[0004] When connecting a traditional antenna RF connector to a cable, the cable, including the outer sheath and inner core, is usually completely inserted into the connector, and the connection is achieved by connecting the inner core of the cable to the pin inside the connector.
[0005] However, the connector for connecting cables in this way will cause unstable connection because the inner core of the cable cannot be fully connected to the pin inside, resulting in relatively large losses, and the electrical performance sometimes cannot meet the requirements, causing the product to be scrapped. Utility Model Content
[0006] In order to solve the above problems, this paper proposes a radio frequency connector for low-loss antennas, one end of the connector shell is a plug-in end, a cable is plugged in the inner side of the plug-in end, the plug-in end is protruding and arranged at the center of the end face of the shell, the outer diameter of the plug-in end is smaller than the outer diameter of the shell, a neck is arranged at the outer arc of the end face of the plug-in end, an inner core bushing is arranged on the inner side of the plug-in end, the material of the inner core bushing is a low-loss medium, one end of the inner core bushing is flush with the outer end face of the plug-in end, the other end of the inner core bushing is connected to the end face of the insulator, the center of the inner core bushing is aligned with the center of the insulator, and the inner core bushing is arranged at the outer end face of the insulator. The inner side of the sleeve is provided with the inner core of the cable, and a compression sleeve is wrapped between the outer side of the plug-in end and the outer side of the cable. The inner core sleeve is cylindrical in shape, and a through hole is provided at the center of the inner core sleeve. An inner core is provided inside the through hole of the inner core sleeve. The outer diameter of the inner core sleeve is the same as the inner diameter of the end face of the plug-in end. The transmission loss of the connector is reduced by directly connecting the inner core of the cable to the connector, and the inner core sleeve of the low-loss medium replaces the original cavity of the cable extending into the connector. The inner core sleeve has low loss characteristics, excellent performance, convenient and fast structure, reduced cost and reliable performance.
[0007] The outer shell is in the shape of a circular tube shell, one end of the outer shell is a plug-in end, and the other end of the outer shell is a conducting end. A nut is provided on the outside of the conducting end, a cable is plugged into the center of the end face of the plug-in end, a compression sleeve is provided on the outside of the plug-in end, a pin is provided in the center of the inner part of the outer shell, and an insulator is provided between the pin and the outer shell. By arranging a plug-in end on the end face of the original straight tube outer shell, it is convenient to install the inner core bushing, and the inner core of the cable can be inserted therein, and it is also convenient to install the compression sleeve on the outside.
[0008] The cable is a multi-layer cable, comprising an inner core and an outer sheath. The inner core at one end of the cable is arranged on the outside of the end face of the outer sheath, the end face of the outer sheath and the end face of the plug-in end are fitted together, the outer side of the outer sheath and the outer side of the plug-in end are both provided with compression sleeves, and the inner core is arranged in the center of the inner core bushing. By directly inserting the inner core of the cable with the peeled outer sheath into the connector, the loss is reduced, and the peeled end face of the outer sheath and the end face of the plug-in end are also fitted together to ensure the installation strength of the cable.
[0009] The insulator is in the shape of a cylinder, with a through hole at the center of the insulator, a pin inside the through hole of the insulator, a protruding pin at one end of the insulator, the pin at the other end of the insulator is arranged inside the insulator, and a connecting circular groove is arranged on the end face of the other end of the insulator, and the connecting circular groove is connected to the end face of the inner core bushing. By separately arranging a connecting circular groove on the end face of the insulator, the inner core bushing can be firmly docked with the insulator, thereby facilitating the connection between the inner core and the pin.
[0010] The compression sleeve is a hard heat shrink sleeve, and the inner layer of the compression sleeve is provided with a hard filling layer. The compression sleeve is heat-shrinkable and arranged on the outside of the plug-in end and the outside of the cable. The compression sleeve is used to fix the outer shell and the cable to ensure the strength of the cable connection end and improve the stability of the connection.
[0011] Beneficial effects:
[0012] By directly connecting the inner core of the cable to the connector, the transmission loss of the connector is reduced, and the inner core bushing of the low-loss medium replaces the original cavity where the cable extends into the connector. The inner core bushing has low loss characteristics, excellent performance, convenient and fast structure, reduced cost and reliable performance.
[0013] By providing a plug-in end on the end face of the original straight tube type outer shell, it is convenient to install the inner core bushing, insert the inner core of the cable into it, and also facilitate the installation of the compression sleeve on the outside.
[0014] The inner core of the stripped cable is directly inserted into the connector to reduce the loss, and the stripped end face is fitted with the end face of the plug-in end to ensure the installation strength of the cable.
[0015] The housing is fixedly connected to the cable by a compression sleeve, thereby ensuring the strength of the cable connection end and improving the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a half-section schematic diagram of a radio frequency connector for a low-loss antenna;
[0017] Figure 2 It is a full cutaway schematic diagram of a radio frequency connector for a low-loss antenna;
[0018] In the figure; 1. pin, 2. insulator, 3. shell, 4. retaining ring, 5. inner core bushing, 6. nut, 7. sealing ring, 8. compression sleeve, 9. cable. DETAILED DESCRIPTION
[0019] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.
[0020] Pin 1, insulator 2, shell 3, clamping ring 4, inner core bushing 5, nut 6, sealing ring 7, compression sleeve 8, cable 9.
[0021] like Figure 1 , 2 As shown;
[0022] A radio frequency connector for a low-loss antenna, wherein one end of the connector shell 3 is a plug-in end, a cable 9 is provided inside the plug-in end in a plug-in manner, the plug-in end is protrudingly arranged at the center of the end face of the shell 3, the outer diameter of the plug-in end is smaller than the outer diameter of the shell 3, a neck is provided at the outer arc of the end face of the plug-in end, an inner core bushing 5 is provided on the inner side of the plug-in end, the material of the inner core bushing 5 is a low-loss dielectric, one end of the inner core bushing 5 is flush with the outer end face of the plug-in end, and the other end of the inner core bushing 5 is flush with the end face of the insulator 2. The inner core bushing 5 is connected to the insulator 2, the center of the inner core bushing 5 is aligned with the center of the insulator 2, the inner core of the cable 9 is arranged on the inner side of the inner core bushing 5, the outer side of the plug-in end and the outer side of the cable 9 are wrapped with a compression sleeve 8, the outer shell 3 is in the shape of a round tube shell, one end of the outer shell 3 is the plug-in end, the other end of the outer shell 3 is the conducting end, a nut 6 is arranged on the outer side of the conducting end, a cable 9 is inserted in the center of the end face of the plug-in end, a compression sleeve 8 is arranged on the outer side of the plug-in end, a pin 1 is arranged in the center of the inner side of the outer shell 3, and the outer shell 3 is provided with a plug-in end. An insulator 2 is provided between the pin 1 and the shell 3, the cable 9 is a multi-layer cable 9, the cable 9 includes an inner core and an outer skin, the inner core at one end of the cable 9 is provided on the outer side of the end face of the outer skin, the end face of the outer skin and the end face of the plug-in end are fitted with each other, the outer side of the outer skin and the outer side of the plug-in end are provided with a press sleeve 8, the inner core is provided at the center of the inner core bushing 5, the inner core bushing 5 is cylindrical in shape, the center of the inner core bushing 5 is provided with a through hole, the inner core is provided inside the through hole of the inner core bushing 5, and the outer diameter of the inner core bushing 5 is the same as that of the plug-in end. The inner diameters of the end faces of the ends are the same, the insulator 2 is in the shape of a cylinder, a through hole is provided at the center of the insulator 2, a pin 1 is provided on the inner side of the through hole of the insulator 2, one end of the insulator 2 is protruding with a pin 1, the pin 1 at the other end of the insulator 2 is arranged on the inner side of the insulator 2, and a connecting circular groove is provided on the end face of the other end of the insulator 2, and the connecting circular groove is connected to the end face of the inner core bushing 5, the pressing sleeve 8 is a hard heat shrink sleeve, the inner layer of the pressing sleeve 8 is provided with a hard filling layer, and the pressing sleeve 8 is heat shrinkably arranged on the outside of the plug-in end and the outside of the cable 9.
[0023] Implementation examples;
[0024] Before use, remove some of the outer skin at one end of the cable 9, and insert the exposed inner core directly into the inner core bushing 5 through the plug-in end of the outer shell 3. The inner core of the cable 9 is in contact with the pin 1 through the inner core bushing 5 and the end face, so that the cable 9 is connected, and the inner core bushing 5, as a low-loss medium, can better transmit to the pin 1.
[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A radio frequency connector for a low-loss antenna, wherein one end of the connector housing is a plug-in end, and a cable is plugged into the inner side of the plug-in end, characterized in that: The plug-in end is protruding at the center of the end face of the shell, the outer diameter of the plug-in end is smaller than the outer diameter of the shell, a neck is provided at the outer arc of the end face of the plug-in end, an inner core bushing is provided on the inner side of the plug-in end, the material of the inner core bushing is a low-loss medium, one end of the inner core bushing is flush with the outer end face of the plug-in end, the other end of the inner core bushing is connected to the end face of the insulator, the center of the inner core bushing is aligned with the center of the insulator, the inner core of the cable is provided on the inner side of the inner core bushing, and a compression sleeve is provided between the outer side of the plug-in end and the outer side of the cable.
2. A low-loss antenna RF connector according to claim 1, characterized in that: The shell is in the shape of a circular tube shell, one end of the shell is a plug-in end, and the other end of the shell is a conducting end. A nut is provided on the outside of the conducting end, a cable is plugged into the center of the end face of the plug-in end, a compression sleeve is provided on the outside of the plug-in end, a pin is provided in the center of the inside of the shell, and an insulator is provided between the pin and the shell.
3. The low-loss antenna RF connector according to claim 1, characterized in that: The cable is a multi-layer cable, comprising an inner core and an outer sheath. The inner core at one end of the cable is arranged outside the end face of the outer sheath. The end face of the outer sheath and the end face of the plug-in end are in contact with each other. The outer side of the outer sheath and the outer side of the plug-in end are both provided with compression sleeves, and the inner core is arranged in the center of the inner core sleeve.
4. The low-loss antenna RF connector according to claim 1, characterized in that: The inner core bushing is cylindrical in shape, a through hole is provided at the center of the inner core bushing, an inner core is provided inside the through hole of the inner core bushing, and the outer diameter of the inner core bushing is the same as the inner diameter of the end face of the plug end.
5. The low-loss antenna RF connector according to claim 1, characterized in that: The insulator is in the shape of a cylinder, a through hole is provided at the center of the insulator, a pin is provided inside the through hole of the insulator, a protruding pin is provided at one end of the insulator, the pin at the other end of the insulator is provided inside the insulator, a connecting circular groove is provided on the end face of the other end of the insulator, and the connecting circular groove is connected to the end face of the inner core bushing.
6. The low-loss antenna RF connector according to claim 1, characterized in that: The compression sleeve is a hard heat shrink sleeve, the inner layer of the compression sleeve is provided with a hard filling layer, and the compression sleeve is heat shrinkably arranged on the outside of the plug-in end and the outside of the cable.