CN205752866U - Connector for radio-frequency coaxial cable - Google Patents

Abstract

Connector for radio-frequency coaxial cable of the present utility model, by threaded engagement connecting components, stable connection, insulating properties are reliable；Realizing sealing water-proof function by double nuts structure crush seal circle modification, install and connect simply, seal reliable, good sealing effect, water resistance is high；Passing through, each parts of adapter are essentially standard component, repeatable utilization, and manufacturing process is simple, and the set-up time is short, low production cost.

Description

RF coaxial cable connector

technical field

The utility model relates to a radio frequency coaxial cable connector, which is applied to the coaxial cable connection of bellows in the power transmission and distribution industry.

Background technique

RF coaxial connectors belong to mechatronics products, which are components for electrical connection or separation of transmission lines. They connect RF coaxial cables with equipment or different types of cables, and mainly act as bridges. In the prior art, RF coaxial connectors are generally used before The body includes an outer conductor, a central conductor and an insulator, and the rear body is provided with a fastening nut and a sealing ring, but because the sealing ring is directly set on the cable sheath, there is no sealing ring limit extrusion device, and the sealing ring is not squeezed and deformed , so the sealing performance cannot be played safely, the waterproof level is low, and the stability of the connection performance cannot be guaranteed in the case of a poor use environment, and it cannot be applied to occasions with high performance requirements; although some products can meet the use requirements, they are zero. The number of components is large, the processing technology is complicated, the installation process is cumbersome, and the installation and use cannot be repeated, and the production cost is high.

Contents of the invention

The technical problem to be solved by the utility model is to provide a radio frequency coaxial cable connector, which is simple in installation and connection, good in sealing effect, high in waterproof performance, simple in manufacturing process, reusable, short in installation time and low in production cost.

The radio frequency coaxial cable connector of the present invention is composed of a front connecting nut, a shell, an inner conductor and an intermediate insulator coaxially connected. The front connecting nut is arranged on the outside of the front section of the shell, the inner conductor is arranged inside the front section, and the intermediate insulator is arranged on the inner conductor. Between the inner hole of the housing, the RF coaxial cable connector is characterized in that: the rear end of the housing is provided with a double-nut connection assembly; the double-nut connection assembly includes a front nut and a rear nut, and the front section of the front nut cooperates with the inner thread of the housing through an external thread Connection, the rear nut is connected with the external thread of the rear part of the front nut through the internal thread, the rear part of the inner cavity of the rear nut is provided with a step, and a sealing ring is provided between the step and the rear end surface of the front nut; the front part of the inner hole of the front nut is provided with a spiral groove It can cooperate with the spiral corrugation on the external coaxial cable shell, and the inner diameter of the rear section of the front nut, the rear nut, and the sealing ring is matched with the outer diameter of the outer sheath of the coaxial cable.

There is an "O" type sealing ring between the front nut and the shell, and a pressure ring is set in front of the front nut. The size of the inner hole of the pressure ring matches the size of the coaxial cable insulator, the outer diameter matches the inner hole of the shell, and there is a limit step inside the shell , the pressure ring is fixed by the inner step of the shell and the front end of the front nut; the outer diameter of the intermediate insulator matches the inner diameter of the front section of the shell, the outer diameter of the front section of the inner conductor matches the inner diameter of the intermediate insulator, and the rear section of the inner conductor is connected to the inner core of the coaxial cable; A snap ring and an "O" type sealing ring are arranged between the inner hole of the connecting nut and the shell.

The radio-frequency coaxial cable connector of the utility model connects various components through thread fit, and the connection is stable and the insulation performance is reliable; the sealing and waterproof function is realized by extruding the sealing ring of the double-nut connecting component, the installation and connection are simple, the sealing is reliable, and the sealing effect is good , high waterproof performance; through, the components of the connector are basically standard parts, can be reused, the manufacturing process is simple, the installation time is short, and the production cost is low.

Description of drawings

Fig. 1 is a schematic diagram of the half-section structure after the connection of the utility model embodiment;

Fig. 2 is a schematic diagram of the half-section structure after the connection and sealing of the embodiment of the utility model;

Fig. 3 is a schematic diagram of the half-section structure before connection of the embodiment of the utility model.

detailed description

As shown in the figure, a radio frequency coaxial cable connector is composed of a front connection nut 1, a shell 2, an inner conductor 3, an intermediate insulator 4, and a double nut connection assembly coaxially connected, and a front connection nut 1 is arranged outside the front section of the shell 2 , the front connecting nut 1 facilitates the connection between the RF coaxial cable connector and instruments, equipment, etc.; the inner conductor 3 is arranged inside the front section of the outer casing 2, and the intermediate insulator 4 is arranged between the inner conductor 3 and the inner hole of the outer casing 2, and the inner conductor 3 and the middle The insulator 4 is fixedly connected, and the intermediate insulator 4 is fixed by the internal step of the front section of the shell 2; the radio frequency coaxial cable connector is characterized in that: the rear end of the shell 2 is provided with a double nut connection assembly; the double nut connection assembly includes a front nut 5, a rear Nut 6, the front section of the front nut 5 is connected with the internal thread of the shell 2 through an external thread, and the rear nut 6 is connected with the external thread of the rear section of the front nut 5 through an internal thread. A sealing ring 9 is arranged between the rear end faces of the nuts 5; a spiral groove is arranged at the front section of the inner hole of the front nut 5 to cooperate with the spiral corrugation on the external coaxial cable shell, and the rear section of the front nut 5, the rear nut 6, and the inner diameter of the sealing ring 9 Match the outer diameter of the coaxial cable sheath, the central conductor of the coaxial cable passes through the rear nut 6, the front nut 5, the sealing ring 9, and the pressure ring 7, and then inserts into the rear section of the inner conductor, and the sealing ring is set in the inner cavity of the rear nut 6 Outside the external coaxial cable, the spiral groove in the inner hole of the front nut 5 cooperates with the spiral corrugation on the shell of the external coaxial cable to fix the coaxial cable. 9 is simultaneously squeezed and deformed by the steps of the rear nut 6 and the rear end surface of the front nut 5, and is sealed between the outer sheath of the coaxial cable and the inner hole of the rear nut 5, which is dustproof and waterproof. The front nut 5 and the rear nut 6 cooperate with each other to fix and support the same Shaft cable to ensure stable and reliable connection.

A pressure ring 7 is arranged in front of the front nut 5. The size of the inner hole of the pressure ring 7 matches the size of the coaxial cable insulator, and the outer diameter matches the inner hole of the shell 2. There is a limit step inside the shell 2. The front section of the front nut 5 is connected to the shell through the external thread. 2. The internal threads are closely connected. The pressure ring 7 is limited and fixed by the inner step of the shell 2 and the front end of the front nut 5. The rear end of the pressure ring 7 and the front end of the front nut 5 are simultaneously limited and fixed on the outer conductor of the coaxial cable to prevent coaxial The cable rotates; a snap ring 8 and an "O"-shaped sealing ring are arranged between the inner hole of the front connecting nut 1 and the outer casing 2, and an "O"-shaped sealing ring is arranged between the front nut 5 and the outer casing 2 to further improve the sealing performance and ensure The connection is stable and reliable.

Claims (3)

1. A radio frequency coaxial cable connector, which consists of a front connecting nut (1), a shell (2), an inner conductor (3), and an intermediate insulator (4) coaxially connected, and the rear section of the inner conductor (3) is the same as the outer connection Shaft cable inner core connection, characterized in that: the rear end of the shell (2) is provided with a double nut connection assembly; the double nut connection assembly includes a front nut (5) and a rear nut (6), and the front section of the front nut (5) passes through the outer The thread is connected with the internal thread of the shell (2), the rear nut (6) is connected with the external thread of the rear section of the front nut (5) through the internal thread, and the step of the rear section of the inner cavity of the rear nut (6) is connected with the front nut (5) A sealing ring (9) is arranged between the rear end faces; the front section of the inner hole of the front nut (5) is provided with a spiral groove to cooperate with the spiral corrugation on the external coaxial cable shell, the inner hole of the rear section of the front nut (5), the rear nut ( 6) The inner diameter of the inner hole and sealing ring (9) matches the outer diameter of the outer sheath of the coaxial cable. 2. The radio frequency coaxial cable connector according to claim 1, characterized in that: the front nut (5) is provided with a compression ring (7), and the size of the inner hole of the compression ring (7) matches the size of the cable insulator, The outer diameter matches the inner hole of the housing (2), and the housing (2) has a limit step inside, and the pressure ring (7) is fixed by the inner step of the housing (2) and the front end of the front nut (5). 3. The radio frequency coaxial cable connector according to claim 1, characterized in that: an "O"-shaped sealing ring is arranged between the front nut (5) and the housing (2).