CN210517233U

CN210517233U - Angle type radio frequency coaxial connector

Info

Publication number: CN210517233U
Application number: CN201921754852.4U
Authority: CN
Inventors: 练高兵; 李国强
Original assignee: Sichuan Hongfa Electroacoustic Co ltd
Current assignee: Sichuan Hongfa Electroacoustic Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-05-12
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses an angle formula radio frequency coaxial connector, including contact pin, insulator, outer conductor, shell, the shell is right angle shape shell, has a horizontal segment and a vertical section, the horizontal segment has a head end and a tail end, and its tail end is crossing with the top of vertical section, makes the shell form right angle shape, contact pin, insulator, outer conductor arrange in the horizontal segment of shell according to inside to outside order, the contact pin assembly is in the insulator, and the fitting surface has the barb, the insulator assembly is in the outer conductor, and the fitting surface has the location step, and the outer conductor assembly is in the shell horizontal segment, the head end of shell horizontal segment has the step tang, the root plane of insulator, outer conductor all flushes on the bottom surface of shell horizontal segment head end step tang.

Description

Angle type radio frequency coaxial connector

Technical Field

The utility model relates to a radio frequency coaxial connector especially relates to an angle formula radio frequency coaxial connector.

Background

The working principle of the radio frequency connector is as follows: any shape of wire in a low frequency device can transmit electromagnetic energy, and the shape of the transmission line is only needed to be considered when transmitting at a long distance. The parallel two-wire transmission lines most commonly used at low frequencies, such as the overhead open wires of power transmission lines or telephones, are of this type. When the frequency is increased so that the wavelength is short compared to the distance between the wires, a considerable amount of electromagnetic energy is radiated from the twin-wire transmission line, resulting in radiation losses. To reduce radiation losses, the distance between the two wires can be reduced. In order to completely avoid radiation loss, two conductors of the transmission line are made into a coaxial shape, and the two conductors are called outer conductors positioned outside and inner conductors positioned inside. This forms a closed transmission line which confines the electromagnetic field between the inner and outer conductors, thereby avoiding radiation losses. A radio frequency connector is a component that is attached to a cable or mounted on an instrument as a component of a transmission line electrical connection or disconnection. The radio frequency connector belongs to a mechatronic product, mainly plays a role of a bridge, and is an indispensable key element of a coaxial transmission system. The radio frequency coaxial connector mainly comprises the following structures: inner conductor (pin), insulator, outer conductor and accessories. The types of the method are classified into a straight type, an angle type and a cluster type.

Fig. 1 is a block diagram of a typical angled rf connector.

Structural description: assembling an outer conductor: the outer conductor (contact) 3 is pressed into the outer conductor (shell) in an interference mode, and the contact 3 is guaranteed to be fixed in the shell 4 by means of interference magnitude between the outer conductor and the shell. 2. The inner conductor 1 is arranged in the insulator 2, and the inner conductor 1 is prevented from axially moving on the insulator 2 by means of barbs and steps of the inner conductor 1; while ensuring that the wire grooves on the inner conductor 1 are aligned with the openings of the insulator 2. 3. Fitting the inner conductor 1 and insulator assembly into the outer conductor 3; and meanwhile, the welding wire groove of the inner conductor 1 and the opening of the insulator 2 are aligned with the cable inlet on the outer conductor 4.

When the connector is used, a cable is arranged in the connector, the cable clamp 6 is sleeved between the cable and the outer conductor 4, the cable outer conductor (woven) is connected with the connector outer conductor 4 through a special crimping tool, the connector inner conductor 1 is connected with the cable inner conductor through welding, after the completion, the rear cover (tail end cover) 5 is pressed into the shell 4, the radio frequency leakage is reduced, meanwhile, the insulator 2 is prevented from retreating, and the inner conductor 1 is driven to move axially, so that the signal discontinuity is caused.

As described above, the fixability of the inner conductor of the connector directly affects the reliability of the connector.

According to the structural analysis, the axial fixity of the inner conductor is directly influenced by the fixity of the contact head and the fixity of the insulator, interference fit is adopted between the contact head and the shell, the axial fixity of the contact head is directly influenced by the tolerance change of the two parts, and when the connector head seat is connected, the contact head has the retreating risk under the action of an inserting force.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a novel angle connector without the disadvantages of the prior art.

The technical solution of the utility model is that:

the utility model provides an angle formula radio frequency coaxial connector, includes contact pin, insulator, outer conductor, shell, the shell is right angle shape shell, has a horizontal segment and a vertical section, the horizontal segment has a head end and a tail end, and its tail end is crossing with the top of vertical section, makes the shell form the right angle shape, contact pin, insulator, outer conductor arrange in the horizontal segment of shell according to inside to outside order, the contact pin assembly is in the insulator, and the fitting surface has the barb, the insulator assembly is in the outer conductor, and the fitting surface has the location step, and the outer conductor assembly is in the shell horizontal segment, its characterized in that, the head end of shell horizontal segment has the step tang, the root plane of insulator, outer conductor all falls on the bottom surface of shell horizontal segment head end step tang.

The shell is further riveted with the outer conductor, and the riveting points are distributed on the cylindrical surface of the shell in the circumferential direction.

And the tail end of the horizontal section of the shell is provided with an end cover.

The vertical section of the shell is provided with a wire clamp.

The utility model has the advantages that:

1. when the structure is assembled, the contact head and the insulator are not required to be aligned with the cable inlet of the outer conductor, the structure is simple, and the cost of parts is low;

2. the roots of the insulator and the outer conductor (contact head) are all arranged in the step rabbet of the shell, and the acting force during the inserting process is all arranged on the step rabbet of the shell, so that the risk of axial movement of the insulator and the outer conductor (contact head) is eliminated;

3. the insulator step plays a role in impedance compensation at the diameter abrupt change position of the inner conductor, and is beneficial to improving the electrical property of the connector;

4. the outer conductor (contact) is fixed with the shell in a riveting mode, and compared with the original interference fit crimping process, the process is simple and easy to operate, the bonding strength is higher, and the outer conductor (contact) is not easy to loosen.

Drawings

FIG. 1 is a block diagram of a conventional angled RF coaxial connector

FIG. 2 is a structural diagram of the angle type RF coaxial connector of the present invention

FIG. 3 is a schematic view (A) of the assembly process of the present invention

FIG. 4 is the assembly process of the present invention

The reference numbers in the figures mean: 1-pin (inner conductor); 2-an insulator; 3-outer conductor (contact); 4-a housing; 5-tail end cover; 6-wire clamp; 7-barbs; 8-insulator step; 9-positioning a step; 10-step spigot.

Detailed Description

Referring to fig. 2: this angle formula radio frequency coaxial connector, including contact pin 1, insulator 2, outer conductor (contact) 3, shell 4 is right angle shape shell, has a horizontal segment and a vertical section, the horizontal segment has a head end and a tail end, and its tail end is crossing with the top of vertical section, makes shell 4 form the right angle shape, contact pin 1, insulator 2, outer conductor (contact) 3 arrange in the horizontal segment of shell 4 according to inside to outside order, contact pin 1 assembles in insulator 2, and the fitting surface has barb 7, insulator 2 assembles in outer conductor (contact) 3, and the fitting surface has location step 9, and outer conductor 3 assembles in the horizontal segment of shell 4, the utility model discloses a characteristics are: the head end of the horizontal section of the shell 4 is provided with a step spigot 10, and the root planes of the insulator 2 and the outer conductor (contact) 3 are flush and all fall on the bottom surface of the step spigot 10 at the head end of the horizontal section of the shell 4.

The shell 4 is also riveted with the outer conductor (contact) 3, and the riveting points are circumferentially distributed on the cylindrical surface of the shell 4.

The end of the horizontal section of the housing 4 is provided with an end cap 5.

The vertical section of the housing 4 is provided with a clamp 6 for clamping a coaxial cable.

The assembly process of the angle type radio frequency coaxial connector is shown in fig. 3 and 4, and the operation steps are as follows:

1. referring to fig. 3: pressing the contact pin 1 into the insulator 2 to form an insulator part, and ensuring that the contact pin 1 does not axially move in the insulator 2 through the barb 7 and the step positioning on the contact pin 1; the insulator step 8 compensates for the abrupt change in diameter of the pin 1 (inner conductor) (inner conductor pin step).

2. Referring to fig. 4: the insulator part is arranged in the outer contact element, then the outer conductor (contact head) 3 is arranged in the shell 4, and the shell 4 is riveted to prevent the outer conductor (contact head) from axially moving and radially loosening. Upon completion, the insulator 2 and outer conductor (contact) 3 are positioned by the shell step seam 10, eliminating axial play.

Claims

1. An angle type radio frequency coaxial connector comprises a contact pin, an insulator, an outer conductor and a shell, wherein the shell is a right-angle shell and is provided with a horizontal section and a vertical section, the horizontal section is provided with a head end and a tail end, the tail end of the horizontal section is intersected with the top end of the vertical section, so that the shell is in a right-angle shape, the contact pin, the insulator and the outer conductor are sequentially arranged in the horizontal section of the shell from inside to outside, the contact pin is assembled in the insulator, the insulator is assembled in the outer conductor, a matching surface is provided with a positioning step, and the outer conductor is assembled in the horizontal section of the shell, and the angle type radio frequency coaxial connector is characterized in that: the head end of the horizontal section of the shell is provided with a step spigot, and the root planes of the insulator and the outer conductor are flush and fall on the bottom surface of the step spigot at the head end of the horizontal section of the shell.

2. The angled radio frequency coaxial connector of claim 1, wherein: the matching surface of the contact pin and the insulator is provided with barbs.

3. The angled radio frequency coaxial connector of claim 1, wherein: the shell is further riveted with the outer conductor, and the riveting points are distributed on the cylindrical surface of the shell in the circumferential direction.

4. The angled radio frequency coaxial connector of claim 1, wherein: and the tail end of the horizontal section of the shell is provided with an end cover.

5. The angled radio frequency coaxial connector of claim 1, wherein: the vertical section of the shell is provided with a wire clamp.