N-type radio frequency coaxial cable assembly

Abstract

The utility model discloses an N-type radio frequency coaxial cable assembly. The coaxial cable connector comprises a shell, an inner conductor and an insulator arranged between the shell and the inner conductor, one end of the shell is a screwing end, the other end of the shell is a coaxial cable connecting end used for being connected with a coaxial cable in series, a C-shaped bush is sleeved with the coaxial cable connecting end of the shell, a nut matched with the C-shaped bush is screwed on the coaxial cable connecting end of the shell, and the C-shaped bush is sleeved with a nut matched with the C-shaped bush. After the coaxial cable is peeled, the coaxial cable extends into the shell through the coaxial cable connecting end and is conductively connected with the inner conductor, and the C-shaped bushing tightly holds the shielding layer of the coaxial cable by screwing the nut. The cable assembly has the advantages that the cable assembly is very simple and convenient to install, the shielding layer of the cable can be firmly locked, the reliability is good, the working efficiency is improved, the consistency of the cable assembly is good, meanwhile, the equipment cost is greatly saved, in addition, the cable inner core can be in good contact with the cable inner core when being inserted, and the structural stability is further improved.

Description

Technical Field

[0001] The utility model relates to a radio frequency coaxial cable assembly, in particular to an N-type radio frequency coaxial cable assembly. Background Art

[0002] As an indispensable component in the antenna system, the quality of the N-type RF coaxial cable assembly directly affects the quality of the entire antenna system. The existing conventional N-type RF coaxial cable assembly usually includes a shell, an insulator, an inner conductor and a RF coaxial cable. At the same time, with the continuous development of the communication industry, the requirements for communication systems are getting higher and higher, and at the same time, higher requirements are also put forward for the RF coaxial cable assembly installed in the antenna system. However, due to the unreasonable structural design of the existing N-type RF coaxial connector, when installing the coaxial cable, the inner core of the cable is generally welded to the inner conductor of the connector with a special welding equipment, and then the shell is inserted, and then the shielding layer of the cable is welded to the shell. This type of connection structure not only has many processes that affect efficiency but also has a large investment cost. Moreover, welding is a key process and must be assigned to specific people and positions. Poor welding can easily cause the entire cable assembly to be returned for repair or scrapped. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an N-type radio frequency coaxial cable assembly which is easy to install, has a stable structure, good consistency and low manufacturing cost.

[0004] In order to solve the above technical problems, the utility model discloses an N-type radio frequency coaxial cable assembly, comprising an outer shell, an inner conductor and an insulator arranged between the outer shell and the inner conductor, one end of the outer shell is a screw-on end, and the other end of the outer shell is a coaxial cable connecting end for serially connecting a coaxial cable, a C-type bushing is sleeved inside the coaxial cable connecting end of the outer shell, and a nut matching the C-type bushing is screwed on the coaxial cable connecting end of the outer shell, after the coaxial cable is peeled, it extends into the outer shell through the coaxial cable connecting end to be conductively connected to the inner conductor, and the C-type bushing hugs the shielding layer of the coaxial cable by tightening the nut.

[0005] The inner conductor is provided with a plurality of longitudinal grooves capable of generating elasticity, and the inner core of the coaxial cable contacts the inner conductor through the longitudinal grooves.

[0006] The coaxial cable connection end of the shell is provided with an inner tapered hole, and the C-shaped bushing has an outer tapered surface matching the inner tapered hole.

[0007] The outer circumferential surface of the inner conductor is provided with a conical barb matched with the insulator.

[0008] The C-type bushing is a tapered bushing with radial fractures.

[0009] A limiting surface located at one side of the coaxial cable connection end is arranged in the inner cavity of the outer shell, and the insulator is positioned and installed in the inner cavity of the outer shell through the limiting surface.

[0010] The advantages of the utility model are:

[0011] By installing a C-type bushing in the coaxial cable connection end of the shell and screwing a nut that matches the C-type bushing on the coaxial cable connection end of the shell, it is only necessary to insert the cable into the installed connector and tighten the nut. The installation is very simple and can firmly lock the shielding layer of the cable with good reliability. Compared with the traditional welding process, it not only saves several key welding processes and improves work efficiency, but also does not cause component repair or scrapping due to poor welding. The consistency of the cable assembly is good. At the same time, there is no need to invest in a large amount of welding equipment, which greatly saves equipment costs. In addition, the inner conductor is provided with a plurality of longitudinal grooves that can generate elasticity, so that it has a certain elasticity, and the cable core can be well contacted with it when inserted, further improving the structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the N-type radio frequency coaxial cable assembly of the utility model in a ready-to-use state;

[0013] Figure 2 This is a schematic diagram of the state structure of the assembly step (1) in the utility model;

[0014] Figure 3 This is a schematic diagram of the state structure of the assembly step (2) in the utility model;

[0015] Figure 4 This is a schematic diagram of the state structure of the assembly step (3) in the utility model;

[0016] Figure 5 This is a schematic diagram of the state structure of the assembly step (4) in the present invention. DETAILED DESCRIPTION

[0017] The N-type radio frequency coaxial cable assembly of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] As shown in the figure, the N-type radio frequency coaxial cable assembly of the utility model includes a shell 1, an inner conductor 2 and an insulator 3 arranged between the shell and the inner conductor. One end of the shell 1 is a screw-on end, and the other end of the shell 1 is a coaxial cable connection end for serially connecting a coaxial cable 6. The outer circumferential surface of the inner conductor 2 is provided with a conical barb 8 that matches the insulator 3, thereby the inner conductor and the insulator can be reliably matched and installed. The coaxial cable 6 has an outer skin, and the shielding layer and the inner core can be exposed after the coaxial cable 6 is peeled. On the outer circumferential surface of the inner conductor 2 A plurality of longitudinal grooves capable of generating elasticity are provided (the longitudinal grooves are provided on one side of the inner core insertion end of the coaxial cable), the inner core of the coaxial cable 6 contacts the inner conductor through the longitudinal grooves, a C-type bushing 4 is sleeved inside the coaxial cable connection end of the housing 1, the C-type bushing 4 is a conical sleeve with a radial fracture, a nut 5 matching the C-type bushing is screwed on the coaxial cable connection end of the housing 1, after the coaxial cable is peeled, it extends into the housing 1 through the coaxial cable connection end to be conductively connected to the inner conductor, and the C-type bushing hugs the shielding layer of the coaxial cable by tightening the nut.

[0019] Furthermore, the coaxial cable connection end of the outer shell 1 is provided with an inner tapered hole 7, the C-shaped bushing 4 has an outer tapered surface matching the inner tapered hole, and the inner cavity of the outer shell 1 is provided with a limiting surface located on one side of the coaxial cable connection end, and the insulator is positioned and installed in the inner cavity of the outer shell 1 through the limiting surface.

[0020] The assembly steps of the N-type radio frequency coaxial cable assembly of the utility model are as follows:

[0021] (1) Press the inner conductor into the insulator to form an inner conductor assembly (such as Figure 2 shown);

[0022] (2) Press the pressed inner conductor assembly into the outer shell (such as Figure 3 shown);

[0023] (3) Insert the C-type bushing into the housing and screw the nut into the housing. Figure 4 shown);

[0024] (4) Install the coaxial cable into the housing and tighten the nut (such as Figure 5 as shown).

[0025] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An N-type radio frequency coaxial cable assembly, comprising a housing (1), an inner conductor (2), and an insulator (3) arranged between the housing and the inner conductor, characterized in that: One end of the shell (1) is a screw-on end, and the other end of the shell (1) is a coaxial cable connection end for serially connecting a coaxial cable (6). A C-type bushing (4) is sleeved inside the coaxial cable connection end of the shell (1), and a nut (5) that matches the C-type bushing is screwed on the coaxial cable connection end of the shell (1). After the coaxial cable is peeled, it extends into the shell (1) through the coaxial cable connection end to be conductively connected to the inner conductor, and the C-type bushing is tightly held by the shielding layer of the coaxial cable by tightening the nut.

2. The N-type radio frequency coaxial cable assembly according to claim 1, characterized in that: The inner conductor (2) is provided with a plurality of longitudinal grooves capable of generating elasticity, and the inner core of the coaxial cable (6) contacts the inner conductor through the longitudinal grooves.

3. The N-type radio frequency coaxial cable assembly according to claim 1 or 2, characterized in that: The coaxial cable connection end of the housing (1) is provided with an inner tapered hole (7), and the C-shaped bushing (4) has an outer tapered surface that matches the inner tapered hole.

4. The N-type radio frequency coaxial cable assembly according to claim 3, characterized in that: The outer circumferential surface of the inner conductor (2) is provided with a conical barb (8) that matches the insulator (3).

5. The N-type radio frequency coaxial cable assembly according to claim 1, 2 or 4, characterized in that: The C-shaped bushing (4) is a conical bushing with a radial fracture.

6. The N-type radio frequency coaxial cable assembly according to claim 5, characterized in that: A limiting surface located on one side of the coaxial cable connection end is provided in the inner cavity of the shell (1), and the insulator is positioned and installed in the inner cavity of the shell (1) via the limiting surface.

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