CN211126190U

CN211126190U - N-type radio frequency coaxial connector

Info

Publication number: CN211126190U
Application number: CN202020221302.2U
Authority: CN
Inventors: 蔡周武
Original assignee: Suzhou Knox Communication Technology Co ltd
Current assignee: Suzhou Knox Communication Technology Co ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-07-28
Anticipated expiration: 2030-02-20

Abstract

The utility model relates to a N type radio frequency coaxial connector, be in including shell, setting inner conductor and cover in the shell are established just be located on the inner conductor insulator between shell and the inner conductor, the material of insulator is PEI, the connector is still including setting up pressure cover in the shell, it will to press the cover the insulator is pressed and is established it makes to press between cover and the shell the insulator is fixed in the shell, and then make the inner conductor is fixed in the shell. The utility model discloses the connector adopts the PEI material as the insulator to according to the dielectric constant design connector structure of PEI, the impedance is 50 ohm, makes the electrical property index parameter of connector when the high frequency channel excellent, and connector assembly is easy and simple to handle, has improved yield and work efficiency.

Description

N-type radio frequency coaxial connector

Technical Field

The utility model belongs to the technical field of the radio frequency coaxial connector, concretely relates to N type radio frequency coaxial connector.

Background

Conventional rf coaxial connectors are classified according to their use: a microstrip type radio frequency coaxial connector and a radio frequency connector connected with a coaxial cable. The structure of the cable-connected radio frequency connector can be divided into: welding structure, crimping structure, dress connection structure. The general N-type connector adopts polytetrafluoroethylene as an insulating support material, and because the dielectric constant of the polytetrafluoroethylene has a hysteresis phenomenon at high frequency, the radio frequency performance of the product is greatly reduced, and particularly the radio frequency index of the general female connector taking the polytetrafluoroethylene as the support is poor at high frequency. On the other hand, when a user of the existing N-type radio frequency coaxial connector uses the connector, the inner conductor is prone to displacement, for example, an N-type female radio frequency coaxial connector disclosed in chinese patent CN203596421U is composed of an outer conductor, an inner conductor, an insulating medium, a supporting medium, a pressing ring, a C-type snap ring wire clamp, a first waterproof ring, a second waterproof ring, and a rear screw sleeve, wherein the inner conductor is located in the outer conductor, the insulating medium is located between the outer conductor and the inner conductor, the supporting medium, the pressing ring, and the C-type snap ring wire clamp are all located on the inner side of the outer conductor, the first waterproof ring is located between the outer conductor and the rear screw sleeve, the second waterproof ring is located in the rear screw sleeve, the inner conductor is only pressed in the outer conductor through the insulating medium, and when the connector is used, the inner conductor is prone to displacement.

Disclosure of Invention

In order to solve the deficiencies in the prior art, the utility model provides a modified N type radio frequency coaxial connector.

For solving the technical problem, the utility model discloses a following technical scheme:

the utility model provides a N type radio frequency coaxial connector, includes the shell, sets up inner conductor and cover in the shell are established on the inner conductor and be located insulator between shell and the inner conductor, the material of insulator is PEI, the connector is still including setting up the cover is pressed in the shell, press the cover will the insulator is pressed and is established it makes to press between cover and the shell the insulator is fixed in the shell, and then make the inner conductor is fixed in the shell.

In a further embodiment, the pressing sleeve is inserted into the housing from the front end of the housing, the insulator is located between the pressing sleeve and the inner conductor, and a first blocking portion and a second blocking portion for pressing the insulator between the housing and the pressing sleeve are respectively arranged on the inner wall of the housing and the inner wall of the pressing sleeve.

In a further embodiment, the first blocking portion further serves to limit the length of insertion of the press sleeve into the housing.

In a further embodiment, the entire press sleeve is located within the housing or the front end face of the press sleeve is coplanar with the front end face of the housing.

In a further embodiment, the outer surface of the inner conductor is provided with an annular groove along the circumferential direction thereof, and the insulator is embedded in the annular groove.

In a further embodiment, the housing is made of stainless steel.

In a further embodiment, the connector further comprises a threaded sleeve threadedly coupled to the rear end of the housing and a bushing disposed between the housing and the threaded sleeve.

In a further embodiment, the inner wall of the housing is further provided with a third stop for trapping the bushing between the housing and the thread insert.

In a further embodiment, the outer surface of the screw sleeve is provided with an external thread, and the inner wall of the rear end of the housing is provided with an internal thread which can be matched with the external thread of the screw sleeve.

In a further embodiment, the threaded sleeve is made of stainless steel.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses the connector adopts the PEI material as the insulator to according to the dielectric constant design connector structure of PEI, the impedance is 50 ohm, makes the electrical property index parameter of connector when the high frequency channel excellent, and connector assembly is easy and simple to handle, has improved yield and work efficiency.

The utility model discloses the cooperation that the connector still adopted pressure cover and shell makes inner conductor and insulator all fixed in the shell, and the phenomenon of inner conductor displacement can not appear when the user uses, has guaranteed the reliable transmission of the cable subassembly signal that has assembled when using.

Drawings

Fig. 1 is a schematic half-sectional view of an N-type rf coaxial connector according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the connection between the insulator and the inner conductor, the press sleeve, and the housing of FIG. 1 (the insulator is not shown);

fig. 3 is a schematic view of an assembly structure of an N-type rf coaxial connector distribution cable according to an embodiment of the present invention;

in the figure: 1. an inner conductor; 11. an annular groove; 2. an insulator; 3. a housing; 31. a first blocking portion; 32. a third barrier portion; 4. pressing the sleeve; 41. a second blocking portion; 5. a bushing; 6. a threaded sleeve; 7. a cable; 8. a shielding layer; 9. a cable core; 10. a gap.

Detailed Description

The invention is further described below with reference to the drawings in the specification:

the N-type female radio frequency coaxial connector shown in fig. 1-2 comprises a housing 3, an inner conductor 1 arranged in the housing 3, and an insulator 2 sleeved on the inner conductor 1 and located between the housing 3 and the inner conductor 1, wherein an annular groove 11 is formed in the outer surface of the inner conductor 1 along the circumferential direction of the inner conductor, and the insulator 2 is embedded in the annular groove 11.

The N-type radio frequency coaxial connector further comprises a pressing sleeve 4 inserted into the shell 3 from the front end of the shell 3, the inner conductor 1 is also arranged in the pressing sleeve 4, the pressing sleeve 4 presses the insulator 2 between the pressing sleeve 4 and the shell 3, so that the insulator 2 is fixed in the shell 3, and the inner conductor 1 is further fixed in the shell 3. Specifically, the insulator 2 is located between the press sleeve 4 and the inner conductor 1, a first blocking portion 31 and a second blocking portion 41 for pressing the insulator 2 between the housing 3 and the press sleeve 4 are respectively arranged on the inner wall of the housing 3 and the inner wall of the press sleeve 4, and the first blocking portion 31 is also used for limiting the length of the press sleeve 4 inserted into the housing 3.

In this example, the end face of the front end of the pressure sleeve 4 is coplanar with the front end face of the housing 3.

The N-type radio frequency coaxial connector further comprises a threaded sleeve 6 in threaded connection with the rear end of the shell 3 and a bushing 5 arranged between the shell 3 and the threaded sleeve 6. Specifically, the outer surface of the threaded sleeve 6 is provided with external threads, and the inner wall of the rear end of the shell 3 is provided with internal threads which can be matched with the external threads of the threaded sleeve 6. The rear end inner wall of the housing 3 is also provided with a third stopper 32 for restraining the bush 5 between the housing 3 and the screw boss 6.

After the threaded sleeve 6 is in threaded connection with the shell 3, a gap 10 exists between the rear end face of the shell 3 and the threaded sleeve 6 in the axial direction of the connector, and due to the existence of the gap 10, after the connector is assembled with a cable, a heat-shrinkable sleeve with good heat-shrinkable performance cannot easily slide off the connector, so that the reliability of the assembly is ensured.

In this example, the housing 3 and the screw boss 6 are made of stainless steel, and the insulator 2 is made of PEI.

After the N-type radio frequency coaxial connector and the cable are assembled, as shown in fig. 3, the specific assembling process is as follows: the insulator 2 is cut into two parts and then clamped in the annular groove 11 of the inner conductor 1, then the insulator 2 and the inner conductor 1 are inserted into the pressing sleeve 4, the insulator 2 is pressed into the pressing sleeve 4, so that the insulator 2 is abutted against the second blocking part 41 of the pressing sleeve 4, then the assembly of the inner conductor 1, the insulator 2 and the pressing sleeve 4 is pressed into the shell 3, and the insulator 2 is abutted against the first blocking part 31 of the shell 3; the screw sleeve 6 and the lining 5 are sequentially sleeved on the cable 7, then the shielding layer 8 of the cable 7 is welded with the lining 5, then the cable core wire 9 is directly inserted into the inner conductor 1, finally the screw sleeve 6 is screwed into the shell 3, and the lining 5 is fixed between the screw sleeve 6 and the shell 3 so as to fix the cable 7.

Through the above arrangement, the N-type radio frequency coaxial connector has the following advantages:

1) because the connector adopts a new design method, the PEI material is adopted as an insulating support (namely an insulator), the connector structure is designed according to the dielectric constant of the PEI, the impedance is 50 ohms, the electrical performance index parameters of the connector at the high frequency band of 18GHz are excellent, the assembly operation of the connector is simple and convenient, and the yield and the working efficiency are improved.

2) Because the connector adopts a new insulating support material, the internal size matching of the connector is different from that of a conventional connector, the connector adopts a new structure, the pressing sleeve is designed, the inner conductor and the insulator are fixed in the shell through the matching of the pressing sleeve and the shell, the displacement phenomenon of the inner conductor cannot occur when a user uses the connector, and the reliable transmission of signals of the assembled cable assembly in use is ensured.

3) After the connector is assembled, a gap exists between the threaded sleeve and the shell, so that the heat-shrinkable sleeve which is well heat-shrinkable cannot easily slide off the connector, and the reliability of the assembly is ensured.

4) Because the shell and the thread insert of the connector are made of stainless steel materials, the environment-resistant reliability of the connector is improved.

In a word, the connector ensures the excellent high-frequency performance and the environmental-resistant requirement, ensures the electrical performance index of the connector in a high-frequency section after the cable is assembled, improves the rate of finished products of connector assembly and improves the working efficiency.

In the above description, the "front end" refers to the end of the N-type rf coaxial connector connected to the male rf coaxial connector.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a N type radio frequency coaxial connector, includes the shell, sets up inner conductor and cover in the shell are established inner conductor is last and be located the insulator between shell and the inner conductor, its characterized in that: the insulator is made of PEI, the connector further comprises a pressing sleeve arranged in the shell, the pressing sleeve presses the insulator between the pressing sleeve and the shell, so that the insulator is fixed in the shell, and the inner conductor is fixed in the shell.

2. The N-type radio frequency coaxial connector of claim 1, wherein: the pressing sleeve is inserted into the shell from the front end of the shell, the insulator is located between the pressing sleeve and the inner conductor, and a first blocking portion and a second blocking portion which are used for enabling the insulator to be arranged between the shell and the pressing sleeve in a pressing mode are arranged on the inner wall of the shell and the inner wall of the pressing sleeve respectively.

3. The N-type radio frequency coaxial connector of claim 2, wherein: the first blocking part is also used for limiting the length of the pressing sleeve inserted into the shell.

4. The N-type radio frequency coaxial connector of claim 1, wherein: the whole pressing sleeve is positioned in the shell or the end surface of the front end of the pressing sleeve is coplanar with the front end surface of the shell.

5. The N-type radio frequency coaxial connector of claim 1, wherein: the outer surface of the inner conductor is provided with an annular groove along the circumferential direction of the inner conductor, and the insulator is embedded in the annular groove.

6. The N-type radio frequency coaxial connector of claim 1, wherein: the shell is made of stainless steel.

7. An N-type RF coaxial connector as in any one of claims 1-6, wherein: the connector also comprises a threaded sleeve in threaded connection with the rear end of the shell and a bushing arranged between the shell and the threaded sleeve.

8. The N-type radio frequency coaxial connector of claim 7, wherein: the inner wall of the housing is further provided with a third stop for restraining the bushing between the housing and the thread insert.

9. The N-type radio frequency coaxial connector of claim 7, wherein: the outer surface of the screw sleeve is provided with external threads, and the inner wall of the rear end of the shell is provided with internal threads which can be matched with the external threads of the screw sleeve.

10. The N-type radio frequency coaxial connector of claim 7, wherein: the thread insert is made of stainless steel.