CN219498432U - Radio frequency coaxial connector - Google Patents

Abstract

The utility model belongs to the technical field of radio frequency connector, a radio frequency coaxial connector is provided, the fixed knot of cable constructs including inner core, cable clamp and cable fixed sleeve, the round recess has been seted up on the lateral wall of cable clamp, the front end interior angle of recess is the right angle, and the rear end interior angle is smooth obtuse angle, the front end inboard of the fixed sleeve of cable is provided with round tight arch in top, and the structural design of recess is convenient for cable clamp inserts and installs the fixed sleeve inboard of cable to the tight protruding entering in top is convenient for the recess, simultaneously along with the rotation of the fixed sleeve of cable, the tight protruding gradual top in top tightly the cable clamp makes the second conical surface follow first conical surface slip oppression inner core clamp cable, and this kind of fixed form makes the connection of cable more firm with the structural design of cable clamp, makes the stretch-proofing ability of cable show and increases.

Description

Radio frequency coaxial connector

Technical Field

The application relates to the technical field of radio frequency connectors, in particular to a radio frequency coaxial connector.

Background

The radio frequency coaxial connector is an indispensable and very critical electromechanical element in a radio electronic system, electronic equipment and instruments and meters, and has the mechanical connection function and ensures the smooth transmission of electromagnetic signals and electromagnetic energy.

In the prior art, a front shell and a rear shell of the radio frequency coaxial connector are connected through threads, the front shell is firstly taken down and screwed into a cable during installation, and then the front shell and the rear shell are screwed. The cables of the same specification are different in size, when the cables are connected, the clamping cables are tight and loose, discontinuity occurs, the electrical performance of the radio frequency connector is affected, and relative sliding or loosening is easy to generate. The form of the threaded connection of the existing radio frequency connector is long in time, looseness is easy to occur, the defects that the connection stability of the connector and a cable is poor and the connector is easy to fall off exist, the threads of the connector are loosened, a certain gap is formed between the connector and the cable joint part, dynamic intermodulation changes are large, and the electrical performance and the mechanical performance of the radio frequency connector are deteriorated.

Disclosure of Invention

In view of this, it is an object of the present application to provide a radio frequency coaxial connector.

The embodiment of the application provides a radio frequency coaxial connector, which comprises an inner conductor, an outer conductor, a threaded sleeve and a cable fixing sleeve, wherein the threaded sleeve and the cable fixing sleeve are respectively arranged at the front end and the rear end of the outer conductor; the first insulator and the second insulator fix the inner conductor at the central axis position of the outer conductor in sequence along the axial direction; the rear end of the second insulator is provided with an annular inner core, and the cable clamp is arranged between the cable fixing sleeve and the inner core; the rear end of the inner core is provided with a first conical surface, the inner side of the front end of the cable clamp is provided with a second conical surface, the first conical surface is parallel to the second conical surface, and the first conical surface is contacted with the second conical surface and is abutted against the second conical surface after the cable to be connected is connected; the cable clamp is arranged on the inner side of the front end of the cable fixing sleeve, a circle of groove is formed in the outer side wall of the cable clamp, the inner angle of the front end of the groove is a right angle, and the inner angle of the rear end of the groove is a smooth obtuse angle; the outer side of the front end of the cable fixing sleeve is provided with external threads, the inner side of the rear end of the outer conductor is provided with internal threads, the cable fixing sleeve can be fixed in the outer conductor through threaded fit, and the rear end of the cable fixing sleeve extends out of the outer conductor; the inner side of the front end of the cable fixing sleeve is provided with a circle of tightening protrusion, and the tightening protrusion rotates forwards along with the cable fixing sleeve in the outer conductor to tightly tighten the cable clamp along with the groove of the cable clamp, so that the second conical surface and the first conical surface can clamp the outer conductor of the cable to be connected.

In some embodiments, the inner conductor is provided with a first positioning step on a front side of the jack at the rear end; the upper part of the rear end of the first insulator is provided with a second positioning step, and the lower part of the rear end of the first insulator is provided with a first positioning bulge; a first positioning recess is formed in the inner side wall of the front end part of the outer conductor; the second positioning step is matched with the first positioning step, the first positioning recess is matched with the first positioning protrusion, and the first insulator is fixed between the outer conductor and the inner conductor; the front end of the second insulator is provided with a third positioning step, and the concave formed by the third positioning step wraps the tail end of the jack at the rear end.

In some embodiments, a first snap ring groove is formed in the outer side wall of the outer conductor, a second snap ring groove is correspondingly formed in the inner side wall of the screw sleeve, and the first snap ring groove and the second snap ring groove encircle to form a mounting space of a snap ring, and the snap ring movably mounts the screw sleeve to the front end of the outer conductor.

In some embodiments, the outer conductor is of an integral design, and the front end of the outer conductor is provided with a step-shaped protruding part, and the step-shaped protruding part surrounds the front end of the inner conductor; a sealing gasket is arranged between the threaded sleeve and the stepped protruding part of the outer conductor.

In some embodiments, the front end of the cable clamp is a conical surface end protruding inwards, the rear end is a clamping ring end, the front side of the conical surface end is a second conical surface, and the inner side is an inner conical surface; the front end part of the cable clamp is separately provided with a plurality of second slots.

In some embodiments, the external thread provided on the cable fixing sleeve has a thread length of 5 teeth or more along the axial direction of the cable fixing sleeve.

In some embodiments, the inner side wall of the cable fixing sleeve is provided with a first step surface and a second step surface which rise from the rear end to the front end and smoothly transition, the first step surface supports and fixes the outer sheath of the cable to be connected, and a first sealing element is arranged on the first step surface; and a circle of tightening protrusions are arranged on the second step surface.

In some embodiments, a first groove is formed in the outer side wall of the cable fixing sleeve at the tail end of the region where the outer conductor is in threaded connection, a second groove is correspondingly formed in the inner side wall of the outer conductor, and a second sealing piece is arranged in the first groove and the second groove.

In some embodiments, the front end of the inner conductor is a plug.

In some embodiments, the outer side wall of the front end part of the outer conductor is provided with a circle of annular bulge, the screw sleeve comprises a circumferential outer side wall and a radial annular radial wall of the rear end, and the inner side end of the annular radial wall is pressed and fixed on the rear side surface of the annular bulge; a sealing gasket is further arranged between the screw sleeve and the outer conductor; a fifth groove is formed in the outer conductor on one side of the rear end of the annular protrusion, and a retainer ring is arranged in the fifth groove.

The beneficial effects that this application can reach.

The utility model provides a radio frequency coaxial connector can be N type or DIN type, plug type or jack type, and the fixed knot of cable constructs including inner core, cable clamp and cable fixed sleeve, and the cable clamp sets up between cable fixed sleeve and inner core, and the inboard of the front end of cable fixed sleeve, the rear end of inner core is provided with first conical surface, and the front end inboard of cable clamp is provided with the second conical surface, first conical surface with the second conical surface is parallel to treat after connecting the cable first conical surface with the second conical surface contacts and supports tightly, offer the round recess on the lateral wall of cable clamp, the front end interior angle of recess is the right angle, and the rear end interior angle is smooth obtuse angle, the front end inboard of cable fixed sleeve is provided with round top tight arch, top tight arch is in with the cable fixed sleeve is in outer conductor is internal rotatory along the recess top tight of cable clamp makes the second conical surface follow first slip, the structural design of recess is convenient for the cable clamp is convenient for insert the cable clamp is at the cable clamp inner side, and the fixed sleeve is fixed at the inner side of cable clamp, thereby the cable is fixed along the fixed gradually when the cable is fixed to the top tight, the cable is fixed to the top tight structure is fixed.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic structural diagram of an N-type plug rf coaxial connector of the present application;

FIG. 2 is a schematic cross-sectional view of the cable clamp of the present application;

fig. 3 shows a schematic structural diagram of a DIN-type plug rf coaxial connector according to the present application.

1-inner conductor, 2-outer conductor, 3-swivel nut, 4-cable fixing sleeve, 5-sealing washer, 6-snap ring, 7-first snap ring groove, 8-second snap ring groove, 9-step protrusion, 10-first insulator, 11-second insulator, 12-inner core, 13-cable clamp, 14-jack, 15-first positioning step, 16-second positioning step, 17-first positioning protrusion, 18-first positioning recess, 19-third positioning step, 20-first conical surface, 21-second conical surface, 22-groove, 23-conical surface end, 24-snap ring end, 25-inner conical surface, 26-second slot, 27-first step surface, 28-second step surface, 29-first seal, 30-first groove, 31-second groove, 32-second seal, 33-jacking protrusion, 35-annular protrusion, 36-third groove, 37-fourth groove, 38-fifth groove, 39-snap ring.

Detailed Description

The term "comprising" in the description and claims of the present application and in the drawings is synonymous with "including", "containing" or "characterized by" and is inclusive or open-ended and does not exclude additional unrecited elements or method steps. "comprising" is a technical term used in claim language to mean that the recited element is present, but other elements may be added and still form a construct or method within the scope of the recited claims.

It should be noted that: like reference numerals and letters in the following figures denote like items, and thus once an item is defined in one figure, no further definition or explanation of it is required in the following figures, and furthermore, the terms "first," "second," "third," etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance. The term "about" in this application is meant to encompass minor variations (up to +/-10%) from the stated values.

In order to solve the problem that a front shell and a rear shell of a radio frequency coaxial connector in the prior art are connected through threads, the front shell is firstly taken down and screwed into a cable during installation, and then a front shell piece and a rear shell are screwed. The cables of the same specification are different in size, and when the cables are connected, the cables are clamped tightly and loose, so that discontinuity is caused, the electrical performance of the radio frequency connector is affected, and relative sliding or loosening is easy to generate. The form of the threaded connection of the existing radio frequency connector is long in time, looseness is easy to occur, the defects that the connection stability of the connector and a cable is poor and the connector is easy to fall off exist, the threads of the connector are loosened, a certain gap is formed between the connector and the cable joint part, dynamic intermodulation changes are large, and the electrical performance and the mechanical performance of the radio frequency connector are deteriorated.

The embodiment of the application provides a radio frequency coaxial connector, which comprises an inner conductor, an outer conductor, screw sleeves and cable fixing sleeves, wherein the screw sleeves and the cable fixing sleeves are arranged at two ends of the outer conductor; the first insulator and the second insulator fix the inner conductor at the central axis position of the outer conductor in sequence along the axial direction; the rear end of the second insulator is provided with an annular inner core, and the cable clamp is arranged between the cable fixing sleeve and the inner core; the rear end of the inner core is provided with a first conical surface, the inner side of the front end of the cable clamp is provided with a second conical surface, the first conical surface is parallel to the second conical surface, and the first conical surface is contacted with the second conical surface and is abutted against the second conical surface after the cable to be connected is connected; the cable clamp is arranged on the inner side of the front end of the cable fixing sleeve, a circle of groove is formed in the outer side wall of the cable clamp, the inner angle of the front end of the groove is a right angle, and the inner angle of the rear end of the groove is a smooth obtuse angle; the outer side of the front end of the cable fixing sleeve is provided with external threads, the inner side of the rear end of the outer conductor is provided with internal threads, the cable fixing sleeve can be fixed in the outer conductor through threaded fit, and the rear end of the cable fixing sleeve extends out of the outer conductor; the inner side of the front end of the cable fixing sleeve is provided with a circle of tightening protrusion, and the tightening protrusion tightens the cable clamp along the groove of the cable clamp along with the rotation of the cable fixing sleeve in the outer conductor, so that the second conical surface slides along the first conical surface.

The structural design of recess in this application is convenient for cable clamp insert and installs the cable fixed cover is inboard, and the tight protruding entering of top of being convenient for the recess, simultaneously when the fixed cover of cable is fixed in the inboard of outer conductor, along with the rotation of the fixed cover of cable, the tight protruding top of top is tight gradually the cable clamp makes the second conical surface slide along first conical surface thereby oppression inner core clamp cable, and this kind of fixed form makes the connection of cable more firm with the structural design of cable clamp, makes the tensile ability index of cable show and increases, has solved connector and cable connection stability poor, easily drops, influences the problem of the performance of connector.

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Example 1

The application provides an N-type plug radio frequency coaxial connector, which comprises an inner conductor 1, an outer conductor 2, screw sleeves 3 and cable fixing sleeves 4, wherein the screw sleeves 3 and the cable fixing sleeves are arranged at two ends of the outer conductor 2, as shown in fig. 1. The inner conductor 1 is fixed at the central axis of the outer conductor 2. The outer side of the outer conductor 2 is also provided with a sealing washer 5 and a snap ring 6. The outer conductor is provided with a first snap ring groove 7 on the outer side wall, the inner side wall of the screw sleeve is correspondingly provided with a second snap ring groove 8, the first snap ring groove 7 and the second snap ring groove 8 are surrounded into an installation space of a snap ring 6, the snap ring 6 movably installs the screw sleeve 3 at the front end of the outer conductor 2 (the end of the inner conductor with a plug is the front end, the end of the inner conductor with a jack is the rear end, and the following is the same). Through the setting of snap ring 6 on the outer conductor, swivel nut 3 passes through second snap ring groove 8 and snap ring 6 looks adaptation and installs on the lateral wall of outer conductor 2 to the installation of swivel nut 3 is convenient for.

As shown in fig. 1, the outer conductor 2 is of an integral design, and the front end of the outer conductor 2 is provided with a step-shaped protruding part 9, and the step-shaped protruding part 9 surrounds the front end of the inner conductor 1. The sealing washer 5 is arranged between the threaded sleeve 3 and the step-shaped protruding portion 9 of the outer conductor 2, when the connector is connected with the connector joint of the other connector, the connector joint of the other connector is propped against the sealing washer 5, after the male and female connectors are screwed up, the sealing washer 5 is stressed to deform so as to play a waterproof role, and compared with the common sealing washer, the sealing washer is larger in area, and the sealing washer is not easy to turn over in the process of installing a cable, so that good sealing performance can be maintained.

The inner conductor 1, the first insulator 10, the second insulator 11, the inner core 12, the cable clamp 13 and the cable fixing sleeve 4 are arranged in the outer conductor. The first insulator 10 and the second insulator 11 fix the inner conductor 1 in the center axis position of the outer conductor 2 in tandem, and the first insulator 10 and the second insulator 11 separate and insulate the inner conductor 1 and the outer conductor 2.

The front end of the inner conductor 1 is a plug, and the rear end is a jack 14. The inner conductor 1 is provided with a first positioning step 15 at the front side of the jack. The upper part of the rear end of the first insulator 10 is provided with a second positioning step 16, and the lower part is provided with a first positioning protrusion 17. The front end portion of the outer conductor 2 is provided with a first positioning recess 18 on the inner side wall. The second positioning step 16 is matched with the first positioning step 15, the first positioning recess 18 is matched with the first positioning protrusion 17, and the first insulator 10 is fixed between the outer conductor 2 and the inner conductor 1. The front end of the second insulator 11 (the end facing the plug, the same applies hereinafter) is provided with a third positioning step 19, and the rear end of the insertion hole 14 of the inner conductor is supported and fixed on the third positioning step 19. The concave formed by the third positioning step 19 wraps the tail end of the jack to play a role of wrapping the grooving piece and prevent the grooving piece from expanding when in use. Through in this application connector's the inner structure second location step 16 with first location step 15 looks adaptation, first location sunken 18 with first location protruding 17 looks adaptation, the third location step 19 parcel support and location the rear end of the jack 14 of inner conductor 1 will the inner conductor is firm to be fixed on the central axis position of outer conductor 2, packaging structure is simple, and the production manufacturing of the connector of being convenient for, and the stability of product is good simultaneously, and on the other hand, the accurate grafting of the inner conductor of waiting to connect the cable of also being convenient for, simple structure is firm to signal loss is few.

The insertion hole 14 of the inner conductor is used for inserting the outer conductor of the connecting cable, and 4-8 slots are formed in the circumferential side wall of the insertion hole, so that the insertion hole diameter can be expanded to a certain extent within a certain allowable range, and the outer conductor of the connecting cable can be inserted more easily. For example, the number of slots may be 4, 5, 6, 7, or 8 in some embodiments.

The rear end of the second insulator 11 is provided with an annular inner core 12. One of the cores 12 acts to bear against the rear side of the second insulator 11, securing the second insulator 11 inside the outer conductor 2.

The cable clamp 13 is arranged between the cable fixing sleeve 4 and the inner core 12, a first conical surface 20 is arranged at the rear end of the inner core 12, a second conical surface 21 is arranged on the inner side of the front end of the cable clamp 13, the first conical surface 20 and the second conical surface 21 are parallel, and the first conical surface 20 and the second conical surface 21 are contacted and abutted after the cable to be connected is connected. The second conical surface 21 is tightly pressed with the first conical surface 20 and slides to further clamp the outer conductor of the cable in the screwing process of the rear cable fixing sleeve 4, so that the cable fixing sleeve has a strong holding force.

As shown in fig. 2, the cable clamp 13 is generally cylindrical, and the cable clamp 13 is disposed inside the front end of the cable fixing sleeve 4. The outer side wall of the cable clamp 13 is provided with a circle of groove 22, the front end of the cable clamp 13 is a conical surface end 23 protruding inwards, the rear end of the cable clamp is a clamping ring end 24, the front side of the conical surface end 23 is a second conical surface 21, and the inner side of the conical surface end is an inner conical surface 25. The front end inner angle of the groove 22 is a right angle, and the rear end inner angle is a smooth obtuse angle, so that the groove is convenient to be matched with the cable fixing sleeve 4. The front end part of the cable clamp 13 is separately provided with a plurality of second slots 26, the second slots 26 enable the cable fixing sleeve 4 to advance to tightly prop against the conical surface end 23 in the process of installing the cable to be connected, so that the second conical surface 21 slides downwards along the first conical surface 20, the inner core 12 is jacked up, the cable is clamped, the connection of the cable is firmer due to the fixing mode and the structural design of the cable clamp 13, and the tensile resistance index of the cable is obviously increased.

The front end (i.e. the end facing the plug, the same applies hereinafter) of the cable fixing sleeve 4 is provided with external threads on the outer side, the rear end (i.e. the end far away from the plug, the same applies hereinafter) of the outer conductor 2 is provided with internal threads, the cable fixing sleeve 4 is fixed inside the outer conductor 2 through threaded fit, but the rear end of the cable fixing sleeve 4 extends out of the rear end of the outer conductor 2. The external thread arranged on the cable fixing sleeve is more than or equal to 5 threads along the axial thread length of the cable fixing sleeve. For example, in some embodiments the external threads provided on the cable retention sleeve may have a thread length of 5 threads, 10 threads, 15 threads, 20 threads, 25 threads, 30 threads, etc. along the axial direction of the cable retention sleeve. The cable fixing sleeve 4 is arranged inside the outer conductor 2, and the two parts are connected through the threaded fit, so that the connecting structure of the cable fixing sleeve 4 and the outer conductor 2 is simplified, a positioning structure is not required, the production and the manufacturing are facilitated, the processing efficiency and the yield are improved, the installation is simple, a special crimping tool is not required, and the installation cost is saved. In addition, a longer connecting area of the cable fixing sleeve 4 and the outer conductor 2 is arranged, so that the firmness and reliability of the cable after installation are greatly improved, the loss of signals is reduced, and faults are not easy to occur.

In some embodiments, the axial length of the external thread provided on the cable fixing sleeve 4 is 1/3-2/3 of the axial length of the cable fixing sleeve, so that the front end of the cable fixing sleeve 4 can be fixed inside the outer conductor 2 through threaded fit, and after the fixing, the part of the front end of the cable fixing sleeve 4 extending into the inner part of the outer conductor 2 is 1/3-2/3 of the axial length of the cable fixing sleeve 4. For example, in some embodiments the engagement length of the cable retention sleeve 4 and the outer conductor 2 may be 1/3, 1/2 or 2/3.

The cable fixing sleeve 4 mainly has the function of pushing the cable clamp 13 tightly so as to connect and fix an external cable, and the inner side wall of the cable fixing sleeve 4 is provided with a first step surface 27 and a second step surface 28 which rise from the rear end to the front end and smoothly transition. The first step surface 27 supports and fixes the outer jacket of the cable to be connected, and a first sealing member 29 is provided on the first step surface 27, and the first sealing member 29 is used for waterproofing between the cable fixing sleeve 4 and the cable outer jacket, so that rainwater is prevented from penetrating into the connector along the outer jacket.

The second step surface 28 is provided with a circle of tightening protrusion 33, and the tightening protrusion 33 on the second step surface 28 is used for tightening the cable clamp 13 along the groove 22 of the cable clamp 13 along with the rotation of the cable fixing sleeve 4 in the outer conductor 2 when the cable to be connected is fixed, so that the second conical surface 21 slides along the first conical surface 20, and the conical surface end 23 of the cable clamp 13 is tightened to tighten the outer conductor part of the cable to be connected, thereby ensuring better contact and fixation of the outer conductor of the cable after the cable is inserted. The outer side wall of the cable fixing sleeve 4 and the tail end of the threaded connection region of the outer conductor 2 are provided with first grooves 30, the inner side wall of the outer conductor 2 is correspondingly provided with second grooves 31, second sealing elements 32 are arranged in the first grooves 30 and the second grooves 31, the second sealing elements 32 seal the cable fixing sleeve 4 and the outer conductor 2, and rainwater is prevented from penetrating into the connector from a gap between the cable fixing sleeve 4 and the outer conductor 2.

In the radio frequency coaxial connector in the application, first insulator 10, inner conductor 1 and second insulator 11 are installed in outer conductor 2 at first, first insulator 10 is installed through first location concave limit 18 and first location protruding 17 correspondence on first insulator 10, first location step 15 on inner conductor 1 with second location step 16 looks adaptation on first insulator 10 is installed on first insulator 10, then installs second insulator 11 in the rear end of inner conductor 1 to make the terminal of inner conductor 1 jack department with the third location step 19 looks adaptation installation of second insulator 11 front end, then install cable clamp 13 and cable fixed cover 4 in outer conductor 2, through cable fixed cover 4 in outer conical surface 2 internal thread connection and screw up, second 21 can the butt first conical surface 20.

Example 2

As shown in fig. 3, a DIN-type plug rf coaxial connector is proposed in embodiment 3. The difference between example 3 and example 1 is that: in this embodiment, the plug is of DIN type structure. The outer side wall of the front end portion of the outer conductor 2 has a ring-shaped protrusion 35. The outer conductor 2 is provided with a third recess 36 on the front side of the annular projection 35. The sleeve 3 comprises a circumferential outer wall and a radial annular radial wall at the rear end, the inner end of which is pressed against the rear side of the annular projection 35. A fourth groove 37 is provided in the sleeve 3, the fourth groove 37 corresponds to the third groove 36 when the sleeve 3 is mounted on the front end of the outer conductor 2, and a sealing gasket 5 is provided in a space surrounded by the third groove 36 and the fourth groove 37. A fifth groove 38 is formed in the outer conductor 2 at the rear end side of the annular protrusion 35, and a retainer ring 39 is disposed in the fifth groove 38. The retainer 39 retains the sleeve 3 on the outer conductor 2 without the use of a conventional snap ring. The rest is the same as in example 1 and will not be described in detail here.

The foregoing has outlined rather broadly the more detailed description of embodiments of the present application, wherein specific examples are provided herein to illustrate the principles and embodiments of the present application, the above examples being provided solely to assist in the understanding of the methods of the present application and the core ideas thereof; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Claims (10)

1. The radio frequency coaxial connector comprises an inner conductor, an outer conductor, a threaded sleeve and a cable fixing sleeve which are respectively arranged at the front end and the rear end of the outer conductor, and is characterized in that the inner conductor, a first insulator, a second insulator, an inner core and a cable clamp are arranged in the outer conductor;

the first insulator and the second insulator fix the inner conductor at the central axis position of the outer conductor in sequence along the axial direction; the rear end of the second insulator is provided with an annular inner core, and the cable clamp is arranged between the cable fixing sleeve and the inner core; the rear end of the inner core is provided with a first conical surface, the inner side of the front end of the cable clamp is provided with a second conical surface, the first conical surface is parallel to the second conical surface, and the first conical surface is contacted with the second conical surface and is abutted against the second conical surface after the cable to be connected is connected; the cable clamp is arranged on the inner side of the front end of the cable fixing sleeve, a circle of groove is formed in the outer side wall of the cable clamp, the inner angle of the front end of the groove is a right angle, and the inner angle of the rear end of the groove is a smooth obtuse angle; the outer side of the front end of the cable fixing sleeve is provided with external threads, the inner side of the rear end of the outer conductor is provided with internal threads, the cable fixing sleeve can be fixed in the outer conductor through threaded fit, and the rear end of the cable fixing sleeve extends out of the outer conductor;

the inner side of the front end of the cable fixing sleeve is provided with a circle of tightening protrusion, and the tightening protrusion rotates forwards along with the cable fixing sleeve in the outer conductor to tightly tighten the cable clamp along with the groove of the cable clamp, so that the second conical surface and the first conical surface can clamp the outer conductor of the cable to be connected.

2. A radio frequency coaxial connector according to claim 1, wherein the inner conductor is provided with a first positioning step on a front side of the insertion hole at the rear end; the upper part of the rear end of the first insulator is provided with a second positioning step, and the lower part of the rear end of the first insulator is provided with a first positioning bulge; a first positioning recess is formed in the inner side wall of the front end part of the outer conductor; the second positioning step is matched with the first positioning step, the first positioning recess is matched with the first positioning protrusion, and the first insulator is fixed between the outer conductor and the inner conductor; the front end of the second insulator is provided with a third positioning step, and the concave formed by the third positioning step wraps the tail end of the jack at the rear end.

3. The rf coaxial connector of claim 1, wherein the outer sidewall of the outer conductor is provided with a first snap ring groove, the inner sidewall of the screw sleeve is correspondingly provided with a second snap ring groove, the first and second snap ring grooves surround an installation space of a snap ring, and the snap ring movably installs the screw sleeve at the front end of the outer conductor.

4. A radio frequency coaxial connector according to claim 1, wherein the outer conductor is of unitary design, the front end of the outer conductor being provided with a stepped projection, the stepped projection surrounding the front end of the inner conductor; a sealing gasket is arranged between the threaded sleeve and the stepped protruding part of the outer conductor.

5. The rf coaxial connector of claim 1, wherein the cable clamp has a front end with a tapered end protruding inward, a rear end with a snap ring end, a front side with a second tapered surface, and an inner tapered surface; the front end part of the cable clamp is separately provided with a plurality of second slots.

6. The radio frequency coaxial connector according to claim 1, wherein the external thread provided on the cable fixing sleeve has a thread length of 5 teeth or more along the axial direction of the cable fixing sleeve.

7. The radio frequency coaxial connector according to claim 1, wherein an inner side wall of the cable fixing sleeve is provided with a first step surface and a second step surface which rise from a rear end to a front end and smoothly transition, the first step surface supports and fixes an outer sheath of a cable to be connected, and a first sealing member is arranged on the first step surface; and a circle of tightening protrusions are arranged on the second step surface.

8. The rf coaxial connector of claim 1, wherein a first groove is formed in an outer sidewall of the cable retention sleeve at a distal end of the threaded connection region with the outer conductor, a second groove is formed in an inner sidewall of the outer conductor, and a second seal is disposed in the first groove and the second groove.

9. A radio frequency coaxial connector according to claim 1, wherein the front end of the inner conductor is a plug.

10. A radio frequency coaxial connector according to claim 1, wherein the outer side wall of the front end portion of the outer conductor has a ring-shaped protrusion, the sleeve comprises a circumferential outer side wall and a radially annular radial wall of the rear end, and the inner side end of the annular radial wall is pressed against the rear side surface of the ring-shaped protrusion to be fixed; a sealing gasket is further arranged between the screw sleeve and the outer conductor; a fifth groove is formed in the outer conductor on one side of the rear end of the annular protrusion, and a retainer ring is arranged in the fifth groove.