CN219268073U

CN219268073U - Right-angle bent radio frequency coaxial connector

Info

Publication number: CN219268073U
Application number: CN202320439732.5U
Authority: CN
Inventors: 纪云飞; 李伟; 张晓冬; 顾文杰; 郑剑秋; 王斌; 赵瑞静; 徐宗铭; 孙晓容
Original assignee: Zhongtian Radio Frequency Cable Co ltd
Current assignee: Zhongtian Radio Frequency Cable Co ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-06-27
Anticipated expiration: 2033-03-09

Abstract

The application belongs to the technical field of radio frequency connectors, and provides a right-angle bent radio frequency coaxial connector, wherein a second inner conductor is vertically welded at one end of a first inner conductor and is provided with an opening and an end cover, so that the welding of the first inner conductor and the second inner conductor is conveniently carried out from the opening; in addition, the knurling is provided with and effectively prevents that second inner conductor, second outer conductor, second insulator from taking place relative rotation, and the fixed knot of cable constructs including inner core, cable clamp and cable fixed cover, and this kind of fixed form and cable clamp's structural design makes the connection of cable more firm, makes standard gauge holding power, mechanical durability, bending resistance ability, stretch-proofing ability, the intensity of connection structure etc. index of cable show and increase.

Description

Right-angle bent radio frequency coaxial connector

Technical Field

The application relates to the technical field of radio frequency connectors, in particular to a right-angle bent 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.

The internal structure of the conventional right-angle bent radio frequency coaxial connector is complex, the connection part of the two sections of inner conductors is connected in a plugging manner, the connection is not firm, and the inner conductors are easy to rotate in the process of connecting a cable, so that the two sections of inner conductors are dislocated, the electrical performance of the connector is poor, the insertion loss is high, the intermodulation performance is poor, and the standing wave performance is reduced. In addition, the screw connection adopted by the existing connector has the defects of poor connection stability and easy falling, and the cable fixing structure of the existing connector cannot adapt to the cable size difference of the same specification, when the cable is connected with the cable, the clamping cable is tightly loosened, the change of inductance and capacitance is caused, the discontinuity occurs, the electrical performance of the radio frequency connector is affected, and the relative sliding or loosening is easy to generate.

Disclosure of Invention

In view of the foregoing, it is an object of the present application to provide a right angle bend radio frequency coaxial connector.

The embodiment of the application provides a right-angle bent radio frequency coaxial connector, which comprises a first connecting section and a cable fixing section which are vertically sleeved and connected in a sealing manner, wherein the first connecting section and the cable fixing section respectively comprise a first inner conductor and a second inner conductor which are vertically arranged, and the upper end of the first inner conductor is connected with the left end of the second inner conductor through welding; an opening and an end cover covering the opening are arranged at the top of the upper end of the first connecting section, and the opening is communicated with a cavity in the first connecting section; the cable fixing section comprises a second inner conductor, a second outer conductor, a second insulator, a third insulator, an inner core, a cable clamp and a cable fixing sleeve, wherein the second insulator and the third insulator fix the second inner conductor at the central axis position of the second outer conductor, a second knurling is arranged on the periphery of the second inner conductor in contact with the second insulator, and a first knurling is arranged on the inner side wall of the second outer conductor in contact with the second insulator; the right end of the second insulator is provided with an annular inner core, the cable clamp is arranged between the cable fixing sleeve and the inner core, the cable clamp is arranged on the inner side of the left end of the cable fixing sleeve, the left end of the cable fixing sleeve can be fixed in the outer conductor, the right end of the inner core is provided with a first conical surface, the inner side of the left end of the cable clamp is provided with a second conical surface, and the first conical surface and the second conical surface are parallel; a circle of grooves are formed in the outer side wall of the cable clamp, the inner angles of the left ends of the grooves are right angles, and the inner angles of the right ends of the grooves are smooth obtuse angles; the cable fixing sleeve is characterized in that a circle of jacking protrusions are arranged on the inner side of the left end of the cable fixing sleeve, the jacking protrusions can move leftwards in the outer conductor along with the cable fixing sleeve, and jack the cable clamp along 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, a circular connecting hole is formed in the upper end of the first outer conductor of the first connecting section, a step-shaped protrusion is formed in one end, close to the circular connecting hole, of the second outer conductor of the cable fixing section, and an adaptive step-shaped recess is formed in the inner portion of the circular connecting hole, and the step-shaped protrusion is inserted into the step-shaped recess to be connected in a nested manner; a first seal is disposed between the stepped protrusion and the stepped recess.

In some embodiments, a recessed step is disposed within the opening, the end cap is disposed on the recessed step, and a second seal is disposed between the top of the recessed step and the end cap.

In some embodiments, a first fixing boss and a second fixing boss are disposed on the first inner conductor, the first insulator is fixed between the first fixing boss and the second fixing boss, an inner step for fixing the first insulator is further disposed on the inner side of the first inner conductor, and the first insulator is clamped on the inner step.

In some embodiments, the outer side wall of the lower end part of the first outer conductor is provided with a ring-shaped bulge, the screw sleeve comprises a circumferential outer side wall and a radial annular radial wall at the upper end, the inner side end part of the annular radial wall is pressed on the upper side surface of the ring-shaped bulge to be fixed, the first outer conductor is provided with a first groove at the lower side of the ring-shaped bulge, and a third sealing element is arranged in the first groove.

In some embodiments, a second insulator is arranged inside the step-shaped bulge at the left end of the second outer conductor, an outer step is arranged at the left periphery of the jack of the second inner conductor, and the right end of the second insulator is clamped on the outer step; the center of the left end of the third insulator is provided with a second step-shaped recess, and the second step-shaped recess wraps and fixes the tail end of the jack.

In some embodiments, a horn-shaped conical surface opening is arranged at the center of the right end of the third insulator, and the conical surface opening is communicated with the second stepped recess through a middle through hole; and a plurality of edge through holes are formed in the area outside the central area of the body of the third insulator, and the edge through holes are arranged around the middle through holes.

In some embodiments, the left end of the cable clamp is separately provided with a number of second slots.

In some embodiments, the threaded engagement length of the cable retention sleeve and the outer conductor is greater than or equal to 5 teeth.

In some embodiments, an external thread is arranged on the outer side of the left end of the cable fixing sleeve, an internal thread is arranged on the inner side of the right end of the outer conductor, the cable fixing sleeve can be fixed inside the outer conductor through threaded fit, and the right end of the cable fixing sleeve extends out of the outer conductor; the outer side wall of the cable fixing sleeve and the tail end of the threaded connection part area of the second outer conductor are provided with third grooves, the inner side wall of the second outer conductor is correspondingly provided with fourth grooves, and a fifth sealing piece is arranged in a space surrounded by the third grooves and the fourth grooves.

The beneficial effects that this application can reach.

The utility model provides a right angle curved radio frequency coaxial connector, including perpendicular sealed first linkage segment and the cable fixed section that cup joints the setting, through the structure simplification design of first linkage segment and cable fixed section to designed the structure that step protruding and step sunken nest was connected, made connector simple structure, be convenient for produce and manufacture and the stability of producing the product is high, simultaneously second inner conductor perpendicular weld in the one end of first inner conductor, the top of the upper end of first linkage segment is provided with the opening and covers open-ended end cover, the opening intercommunication the interior cavity of contact pin section, the convenience is compared in other connected mode from the welding of opening part first inner conductor and second inner conductor, makes the connectivity of first inner conductor and second inner conductor better, has further reduced the transmission loss of this connector, has better intermodulation performance, and the third order intermodulation is less than or equal to-150 dBc, and is convenient for manufacture and produce. In addition, the second knurl is arranged on the periphery of the second inner conductor and the contact part of the second insulator, the first knurl is arranged on the contact area of the inner side wall of the second outer conductor and the second insulator, and the second inner conductor is prevented from rotating in the process of installing a cable to be connected or assembling. On the other hand, the fixing structure of the cable comprises an inner core, a cable clamp and a cable fixing sleeve, wherein the cable clamp is arranged between the cable fixing sleeve and the inner core, and is arranged at the inner side of the front end of the cable fixing sleeve, a first conical surface is arranged at the rear end of the inner core, a second conical surface is arranged at the inner side of the front end of the cable clamp, the first conical surface and the second conical surface are parallel, the first conical surface and the second conical surface are contacted and abutted tightly after the cable to be connected is connected, a circle of groove is formed in the outer side wall of the cable clamp, the front end inner angle of the groove is a right angle, the rear end inner angle is a smooth obtuse angle, a circle of jacking bulge is arranged at the inner side of the front end of the cable fixing sleeve, the cable clamp is characterized in that the jacking bulge jacks the cable clamp along the groove of the cable clamp along with the rotation of the cable fixing sleeve in the outer conductor, the second conical surface slides along the first conical surface, the structural design of the groove is convenient for the cable clamp to be inserted and installed inside the cable fixing sleeve, the jacking bulge is convenient for the jacking bulge to enter the groove, meanwhile, when the cable fixing sleeve is fixed inside the outer conductor, the jacking bulge gradually jacks the cable clamp along with the rotation of the cable fixing sleeve, the second conical surface slides along the first conical surface to press the inner core to clamp the cable, and the connection of the cable is firmer due to the structural design of the fixing form and the cable clamp, so that indexes such as standard gauge holding force, mechanical durability, bending resistance, stretching resistance and strength of a connecting structure of the cable are obviously increased.

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 a DIN-type pin rf coaxial connector of the present application;

fig. 2 is a schematic cross-sectional view showing a third insulator of the connector of the present application;

fig. 3 shows a schematic cross-sectional structure of a cable clamp of the connector of the present application.

A 100-radio frequency coaxial connector, a 101-first connection section, a 102-cable fixing section, a 1-first inner conductor, a 2-second inner conductor, a 3-connection hole, a 4-first outer conductor, a 5-second outer conductor, a 6-first insulator, a 7-screw sleeve, an 8-second insulator, a 9-third insulator, a 10-inner core, a 11-cable clamp, a 12-cable fixing sleeve, a 13-stepped protrusion, a 14-stepped recess, a 15-first seal, a 16-end cap, a 17-opening, a 18-second seal, a 19-first fixing boss, a 20-second fixing boss, a 21-annular protrusion, a 22-first groove, a 23-third seal, a 24-threaded region, a 25-insertion hole, a 26-second stepped recess. 27-cone opening, 28-middle through hole, 29-body, 30-edge through hole, 31-first cone, 32-second cone, 33-second groove, 34-cone end, 35-snap ring end, 36-inner cone, 37-second slot, 38-tightening protrusion, 39-fourth seal, 40-third groove, 41-fourth groove, 42-fifth seal, 43-first knurl, 44-second knurl.

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 problems that in the prior art, the connection part of two sections of inner conductors is connected in a plugging manner, the connection is not firm, the inner conductors are easy to rotate in the process of connecting a cable, the two sections of inner conductors are dislocated, the electrical performance of the connector is poor, the insertion loss is large, the intermodulation performance is poor, and the standing wave performance is reduced. In addition, the screw connection adopted by the existing connector has the defects of poor connection stability and easy falling, and the cable fixing structure of the existing connector cannot adapt to the cable size difference of the same specification, when the cable is connected with the cable, the clamping cable is tightly loosened, the change of inductance and capacitance is caused, the discontinuity occurs, the electrical performance of the radio frequency connector is affected, and the relative sliding or loosening is easy to generate.

The embodiment of the application provides a right-angle bent radio frequency coaxial connector, which comprises a first connecting section and a cable fixing section which are vertically sleeved and connected in a sealing manner, wherein the first connecting section and the cable fixing section respectively comprise a first inner conductor and a second inner conductor which are vertically arranged, and the upper end of the first inner conductor is connected with the left end of the second inner conductor through welding; an opening and an end cover covering the opening are arranged at the top of the upper end of the first connecting section, and the opening is communicated with a cavity in the first connecting section; the upper end of the first outer conductor of the first connecting section is provided with a circular connecting hole, one end, close to the circular connecting hole, of the second outer conductor of the cable fixing section is provided with a step-shaped bulge, the circular connecting hole is provided with a matched step-shaped recess, and the step-shaped bulge is inserted into the step-shaped recess to be connected in a nested manner; the cable fixing section comprises a second inner conductor, a second outer conductor, a second insulator, a third insulator, an inner core, a cable clamp and a cable fixing sleeve, wherein the second inner conductor is fixed at the central axis position of the second outer conductor by the second insulator and the third insulator, second knurls are arranged on the periphery of the second inner conductor and in a second insulator contact area, and first knurls are arranged on the inner side wall of the second outer conductor and in a second insulator contact area; the right 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 right end of the inner core is provided with a first conical surface, the inner side of the left 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 left 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 left end of the groove is a right angle, and the inner angle of the right end of the groove is a smooth obtuse angle; the outer side of the left end of the cable fixing sleeve is provided with external threads, the inner side of the right 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 right end of the cable fixing sleeve extends out of the outer conductor; the cable fixing sleeve is characterized in that a circle of jacking protrusions are arranged on the inner side of the left end of the cable fixing sleeve, and the jacking protrusions can rotate in the outer conductor along with the cable fixing sleeve to jack the cable clamp tightly, so that the second conical surface slides along the first conical surface.

The right angle bent radio frequency coaxial connector comprises a first connecting section and a cable fixing section which are vertically and hermetically sleeved, the design is simplified through the structures of the first connecting section and the cable fixing section, and the structure of nested connection of the stepped bulge and the stepped recess is designed, so that the connector is simple in structure, convenient to manufacture and high in stability of manufactured products, meanwhile, the second inner conductor is vertically welded to one end of the first inner conductor, an opening and an end cover for covering the opening are formed in the top of the upper end of the first connecting section, the opening is communicated with an inner cavity of the pin section, and therefore the first inner conductor and the second inner conductor are conveniently welded from the opening. In addition, the second knurl is arranged on the periphery of the second inner conductor and the second insulator contact area, the first knurl is arranged on the inner side wall of the second outer conductor and the second insulator contact area, and the second inner conductor, the second insulator and the second outer conductor are prevented from rotating relatively in the process of installing a cable to be connected or assembling. On the other hand, the fixing structure of the cable comprises an inner core, a cable clamp and a cable fixing sleeve, wherein the cable clamp is arranged between the cable fixing sleeve and the inner core, and is arranged at the inner side of the front end of the cable fixing sleeve, a first conical surface is arranged at the rear end of the inner core, a second conical surface is arranged at the inner side of the front end of the cable clamp, the first conical surface and the second conical surface are parallel, the first conical surface and the second conical surface are contacted and abutted tightly after the cable to be connected is connected, a circle of groove is formed in the outer side wall of the cable clamp, the front end inner angle of the groove is a right angle, the rear end inner angle is a smooth obtuse angle, a circle of jacking bulge is arranged at the inner side of the front end of the cable fixing sleeve, the cable clamp is characterized in that the jacking bulge jacks the cable clamp along the groove of the cable clamp along with the rotation of the cable fixing sleeve in the outer conductor, the second conical surface slides along the first conical surface, the structural design of the groove is convenient for the cable clamp to be inserted and installed inside the cable fixing sleeve, the jacking bulge is convenient for the jacking bulge to enter the groove, meanwhile, when the cable fixing sleeve is fixed inside the outer conductor, the jacking bulge gradually jacks the cable clamp along with the rotation of the cable fixing sleeve, the second conical surface slides along the first conical surface to press the inner core to clamp the cable, and the connection of the cable is firmer due to the structural design of the fixing form and the cable clamp, so that indexes such as standard gauge holding force, mechanical durability, bending resistance, stretching resistance and strength of a connecting structure of the cable are obviously increased.

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 present application provides a DIN-type pin rf coaxial connector, as shown in fig. 1, the structure of which is described in terms of the up, down, left, and right directions marked with coordinates in fig. 1 (the same applies hereinafter). The rf coaxial connector 100 includes a first connection section 101 and a cable fixing section 102 that are disposed in a vertically sealed and sleeved arrangement. A cable fixing section 102 is vertically and hermetically sleeved on one side wall of the upper end of the first connecting section 101, one end of the cable fixing section 102 is nested in the first connecting section 101, the central axis of the cable fixing section 102 is perpendicular to the central axis of the first connecting section 101, and the other end of the cable fixing section 102 is used for being connected with a cable to be connected. Four lateral walls of the upper end of the first connecting section 101 are plane, one of the lateral walls is provided with a circular connecting hole 3, the whole cable fixing section 102 is cylindrical, the diameter of the cylinder close to the connecting hole is thinned and smoothly transits, and the left end of the cable fixing section 102 is embedded into the circular connecting hole 3 through interference connection.

As shown in fig. 1, the first connection section 101 includes a first inner conductor 1, a first outer conductor 4, a first insulator 6, and a screw sleeve 7. The cable fixing section 102 comprises a second inner conductor 2, a second outer conductor 5, a second insulator 8, a third insulator 9, an inner core 10, a cable clamp 11 and a cable fixing sleeve 12. The left end of the cable fixing section 102, which is close to the second outer conductor 5 of the circular connecting hole 3, is provided with a step-shaped protrusion 13, the circular connecting hole 3 on the corresponding first outer conductor 4 is also provided with a corresponding step-shaped recess 14, the step-shaped protrusion 13 at the left end of the second outer conductor 5 of the cable fixing section 102 is inserted into the step-shaped recess 14 at the circular connecting hole 3 on the first outer conductor 4 of the first connecting section 101 and is nested through interference connection, a first sealing piece 15 is arranged between the step-shaped protrusion 13 and the step-shaped recess 14, and the arrangement of the first sealing piece 15 prevents outside water from penetrating from the nested position, so that the waterproof performance of the connector is further improved.

As shown in fig. 1, the first connection section 101 and the cable fixing section 102 respectively include a first inner conductor 1 and a second inner conductor 2 which are vertically disposed, the first inner conductor 1 includes a plug end of a lower end and a non-plug end of an upper end, the second inner conductor 2 includes a plug end of a right end and a non-plug end of a left end, and the upper end of the first inner conductor 1 and the left end of the second inner conductor 2 are connected by welding. An end cover 16 is arranged at the top of the upper end of the first connecting section 101, the end cover 16 covers an opening 17 at the top of the upper end of the first connecting section 101, and the opening 17 is communicated with a cavity inside the first connecting section 101. The opening 17 is internally provided with a concave step, the end cover 16 is arranged on the concave step, a second sealing element 18 is arranged between the concave step surface and the end cover 16, and the second sealing element 18 can prevent external rainwater from penetrating into the inner space of the first connecting section 101 from the end cover 16. The end cap 16 is provided to facilitate welding the first and second

inner conductors

1 and 2, and the end cap 16 is opened during the assembly and manufacture of the connector, the upper end (i.e., the non-plug end) of the first inner conductor 1 and the left end (i.e., the non-socket end) of the second inner conductor 2 are welded, and then the second sealing member 18 is placed, and the sealing end cap 16 is fixed.

In this embodiment, a second knurl 44 is provided on the outer periphery of the second inner conductor 2 and in the contact area of the second insulator 8 in the cable fixing section 102, and a first knurl 43 with straight lines is provided on the inner side wall of the second outer conductor 5 in the area corresponding to the second insulator 8, so as to prevent the second inner conductor 2, the second insulator 8 and the second outer conductor 5 from rotating relatively during the process of installing the cable to be connected or assembling.

The first inner conductor 1 is provided with a first fixing boss 19 and a second fixing boss 20 which are vertically distributed, and the first insulator 6 is fixed between the first fixing boss 19 and the second fixing boss 20 and supported between the first inner conductor 1 and the first outer conductor 4, so that insulation is kept between the first inner conductor 1 and the first outer conductor 4. The inner side of the first outer conductor 4 is also provided with an inner side step for fixing the first insulator 6, and the first insulator is clamped on the inner side step.

The first outer conductor 4 is of an integrally formed design, and a circle of annular protrusions 21 are arranged on the outer side wall of the lower end portion of the first outer conductor 4. A first groove 22 is provided on the first outer conductor 4 at the lower side of the annular projection 21, and a third seal 23 is provided in the first groove 22. The screw sleeve 7 comprises a circumferential outer wall and a radially annular radial wall at the upper end, the inner end of which is pressed against the upper side of the annular projection 21. The threaded area 24 is arranged in the threaded sleeve 7, when the threaded sleeve is connected with the other connector, the connecting end of the other connector is in threaded connection to compress the third sealing piece 23, and after the male head and the female head are screwed, the third sealing piece 23 is stressed to deform, so that a waterproof effect is achieved.

As shown in fig. 1, the second outer conductor 5 is of an integral design, and the cable fixing section 102 includes the second outer conductor 5, and the second inner conductor 2, the second insulator 8, the third insulator 9, the inner core 10, the cable clamp 11 and the cable fixing sleeve 12 disposed in the second outer conductor 5.

The second insulator 8 and the third insulator 9 fix the second inner conductor 2 in the center axis position of the second outer conductor 5 in tandem, and the second insulator 8 and the third insulator 9 separate and insulate the second inner conductor 2 and the second outer conductor 5. The second insulator 8 is disposed inside the stepped boss 13 at the left end of the second outer conductor 5, an outer step is disposed on the left outer periphery of the insertion hole 25 of the second inner conductor 2, and the right end of the second insulator 8 is clamped at the outer step. The third insulator 9 is disposed at the right end of the jack 25, as shown in fig. 2, a second stepped recess 26 is disposed at the center of the left end of the third insulator 9, and the second stepped recess 26 is used for wrapping and fixing the end of the jack 25, so as to play a role of wrapping the slotted member, and not to expand when in use. The right end center of the third insulator 9 is provided with a horn-shaped conical surface opening 27, the conical surface opening 27 is communicated with the second step-shaped recess 26 through a middle through hole 28, and the conical surface opening 27 facilitates the insertion of an inner conductor of a cable to be connected.

In the present application, the first insulator 6, the second insulator 8, and the third insulator 9 are made of Polytetrafluoroethylene (PTFE) insulating material, modified polyphenylene oxide (MPPO) insulating material, polyetherimide (PEI), polyether ether ketone (PEEK), or other materials, and the manufacturing method may be cutting. The strength of insulating materials such as crosslinked PTFE or MPPO is good, the dielectric constant is stable, and the insulator made of the material is easy to meet the requirements of the high-frequency connector on the strength and the thickness of the insulator.

In other embodiments, the insulator is not limited to the cross-linked PTFE, MPPO, PEI, PEEK material in this example, and other materials having better strength and more stable dielectric constant, such as poly-4-methylpentylene (TPX), etc., may be used.

A plurality of edge through holes 30 are opened in an edge region outside the center region of the body 29 of the third insulator 9, and the plurality of edge through holes 30 are disposed around the intermediate through hole 28. In some embodiments, the hollow-out volume formed by the edge through hole 30 may occupy 40% -60% of the volume of the body 29, so as to reduce the dielectric constant of the third insulator, increase the cut-off frequency of the connector and compensate for the discontinuous capacitance, wherein the volume of the body 29 refers to the solid volume of the body 29.

In this embodiment, the second inner conductor 2 is fixed by the outer step of the left side periphery of the jack 25 of the second inner conductor 2 being blocked by the second insulator 8, and the end of the jack 25 of the second inner conductor 2 is wrapped and fixed by the second step-shaped recess 26, so that the second inner conductor 2 is fixed in tandem, the assembly structure is simple, the production and the manufacture of the connector are convenient, meanwhile, the stability of the product is good, on the other hand, the accurate insertion of the inner conductor of the cable to be connected is also convenient, the structure is simple and firm, and the signal loss is less.

The insertion hole 25 of the inner conductor is used for inserting the outer conductor of the connecting cable, and the circumferential side wall of the insertion hole is provided with 4-8 slots, which is within a certain allowable range, so that the insertion hole diameter can be expanded to a certain extent, 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 right end of the third insulator 9 is provided with an annular inner core 10. One of the cores 10 acts to bear against the right side of the third insulator 9, securing the third insulator 9 inside the second outer conductor 5.

The cable clamp 11 is arranged between the cable fixing sleeve 12 and the inner core 10, a first conical surface 31 is arranged at the right end of the inner core 10, a second conical surface 32 is arranged on the inner side of the left end of the cable clamp 11, the first conical surface 31 and the second conical surface 32 are parallel, and the first conical surface 31 and the second conical surface 32 are contacted and abutted after the cable to be connected is connected. The second conical surface 32 is pressed with the first conical surface 31 and slides to further clamp the outer conductor of the cable in the screwing process of the rear cable fixing sleeve 12, so that the cable fixing sleeve has a strong holding force.

As shown in fig. 3, the cable clamp 11 is generally cylindrical, and the cable clamp 11 is disposed inside the left end of the cable fixing sleeve 12. The outer side wall of the cable clamp 11 is provided with a circle of second grooves 33, the left end of the cable clamp 11 is a conical surface end 34 protruding inwards, the right end of the cable clamp is a clamping ring end 35, the front side of the conical surface end 34 is a second conical surface 32, and the rear side of the conical surface end is an inner conical surface 36. The left inner angle of the second groove 33 is a right angle, and the right inner angle is a smooth obtuse angle, so that the second groove is convenient to be matched with the cable fixing sleeve 12. The left end part of the cable clamp 11 is separately provided with a plurality of second slots 37, the second slots 37 enable the cable fixing sleeve 12 to advance to push against the conical surface end 34 in the process of installing the cable to be connected, so that the second conical surface 32 slides downwards along the first conical surface 31, the inner core 10 is jacked up to clamp the cable, the fixing form and the structural design of the cable clamp 11 enable the connection of the cable to be firmer, and indexes such as standard gauge holding force, mechanical durability, bending resistance, stretching resistance and strength of a connecting structure of the cable are obviously increased.

The outer side of the left end of the cable fixing sleeve 12 is provided with external threads, the right end of the second outer conductor 5 is provided with internal threads, the cable fixing sleeve 12 is fixed inside the second outer conductor 5 through threaded fit, but the right end of the cable fixing sleeve 12 extends out of the right end of the second outer conductor 5. In general, the thread engagement length of the cable fixing sleeve and the outer conductor is more than or equal to 5 teeth. For example, in some embodiments, the threaded engagement length of the cable retention sleeve and the outer conductor may be 5 teeth, 10 teeth, 15 teeth, 20 teeth, 25 teeth, 30 teeth, etc.

In some embodiments, the axial length of the external thread provided on the cable fixing sleeve 12 is 1/3 to 2/3 of the axial length of the cable fixing sleeve, so that the left end of the cable fixing sleeve 12 can be fixed inside the second outer conductor 5 through screw-fit, and after the fixing, the part of the left end of the cable fixing sleeve 12 extending into the second outer conductor 5 is 1/3 to 2/3 of the axial length of the cable fixing sleeve 12. For example, in some embodiments the engagement length of the cable retention sleeve 12 and the second outer conductor 5 may be 1/3, 1/2, or 2/3.

The cable fixing sleeve 12 is arranged in the second outer conductor 5, and the two parts are connected through the threaded fit, so that the connecting structure of the cable fixing sleeve 12 and the second outer conductor 5 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 connection area of the cable fixing sleeve 12 and the second outer conductor 5 is provided, 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.

The cable fixing sleeve 12 mainly plays a role of propping up the cable clamp 11 to connect and fix an external cable, a circle of propping up protrusion 38 is arranged on the inner side wall of the cable fixing sleeve 12, the propping up protrusion 38 is used for propping up the cable clamp 11 along the second groove 33 of the cable clamp 11 when the cable fixing sleeve 12 is rotated in the second outer conductor 5 during fixing the cable to be connected, so that the second conical surface 32 slides along the first conical surface 31, and the inner core 10 tightens inwards to fasten 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.

A fourth sealing member 39 is arranged on the inner side wall of the cable fixing sleeve 12, and the fourth sealing member 39 is used for preventing water between the cable fixing sleeve 12 and the cable outer sheath and preventing rainwater from penetrating into the connector along the outer sheath.

The end of the region of the outer side wall of the cable fixing sleeve 12, which is connected with the thread of the second outer conductor 5, is provided with a third groove 40, the inner side wall of the second outer conductor 5 is correspondingly provided with a fourth groove 41, a fifth sealing element 42 is arranged in a space surrounded by the third groove 40 and the fourth groove 41, the fifth sealing element 42 seals between the cable fixing sleeve 12 and the second outer conductor 5, and rainwater is prevented from penetrating into the connector from a gap between the cable fixing sleeve 12 and the second outer conductor 5.

The first outer conductor 4 and the second outer conductor 5 in the application can be in a copper plating ternary alloy form, the transmission signal is continuous and stable, the corrosion resistance is excellent, and the good electrical performance and the mechanical performance under a complex environment are finally ensured. All seals herein may be made of silicone rubber or other materials that meet the performance requirements of the connector. The inner conductor in this application is gold or silver plated.

In the radio frequency coaxial connector in the application, in the manufacturing process, first connecting section 101 is assembled, threaded sleeve 7 is sleeved outside first outer conductor 4, first inner conductor and first insulator 6 are installed inside first outer conductor 4, then cable fixing section 102 is assembled, second inner conductor 2 is fixed at the central axis position of second outer conductor 5 through second insulator 8 and third insulator 9, then cable fixing section 102 is sealed and sleeved into circular connecting hole 3 on first outer conductor 4 of first connecting section 101 to be fixed, end cover 16 is opened to weld the left end of second inner conductor 2 with the upper end of first inner conductor 1, second sealing piece 18 is placed to compress the end cover after welding is completed, finally inner core 10 is installed on the right side of third insulator 9, cable clamp 11 and cable fixing sleeve 12 are combined and connected to the inner side internal thread of second outer conductor 5 in a threaded mode.

In other embodiments of the present application, the interface of the first connection section 101 may be a male or female connector, an N-type structure or a DIN-type structure, as needed, and will not be described in detail herein.

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

1. The right-angle bent radio frequency coaxial connector comprises a first connecting section and a cable fixing section which are vertically sleeved and connected, and is characterized in that the first connecting section and the cable fixing section respectively comprise a first inner conductor and a second inner conductor which are vertically arranged, and the upper end of the first inner conductor is connected with the left end of the second inner conductor through welding; an opening and an end cover covering the opening are arranged at the top of the upper end of the first connecting section, and the opening is communicated with a cavity in the first connecting section;

the cable fixing section comprises a second inner conductor, a second outer conductor, a second insulator, a third insulator, an inner core, a cable clamp and a cable fixing sleeve, wherein the second insulator and the third insulator fix the second inner conductor at the central axis position of the second outer conductor, a second knurling is arranged on the periphery of the second inner conductor in contact with the second insulator, and a first knurling is arranged on the inner side wall of the second outer conductor in contact with the second insulator; the right end of the second insulator is provided with an annular inner core, the cable clamp is arranged between the cable fixing sleeve and the inner core, the cable clamp is arranged on the inner side of the left end of the cable fixing sleeve, the left end of the cable fixing sleeve can be fixed in the outer conductor, the right end of the inner core is provided with a first conical surface, the inner side of the left end of the cable clamp is provided with a second conical surface, and the first conical surface and the second conical surface are parallel; a circle of grooves are formed in the outer side wall of the cable clamp, the inner angles of the left ends of the grooves are right angles, and the inner angles of the right ends of the grooves are smooth obtuse angles; the cable fixing sleeve is characterized in that a circle of jacking protrusions are arranged on the inner side of the left end of the cable fixing sleeve, the jacking protrusions can move leftwards in the outer conductor along with the cable fixing sleeve, and jack the cable clamp along 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. The right angle bend type radio frequency coaxial connector according to claim 1, wherein a circular connecting hole is formed in the upper end of the first outer conductor of the first connecting section, a step-shaped protrusion is formed at one end, close to the circular connecting hole, of the second outer conductor of the cable fixing section, an adaptive step-shaped recess is formed in the inner portion of the circular connecting hole, and the step-shaped protrusion is inserted into the step-shaped recess to be connected in a nested manner; a first seal is disposed between the stepped protrusion and the stepped recess.

3. The right angle bend radio frequency coaxial connector of claim 1, wherein a recessed step is disposed within the opening, the end cap is disposed on the recessed step, and a second seal is disposed between the top of the recessed step and the end cap.

4. The right angle bend radio frequency coaxial connector according to claim 1, wherein a first fixing boss and a second fixing boss are disposed on the first inner conductor, a first insulator is fixed between the first fixing boss and the second fixing boss, an inner step for fixing the first insulator is further disposed on the inner side of the first inner conductor, and the first insulator is clamped on the inner step.

5. The right angle bend radio frequency coaxial connector of claim 1, wherein the outer side wall of the lower end portion of the first outer conductor has a ring-shaped protrusion, the sleeve includes a circumferential outer side wall and an upper radially annular radial wall, the inner side end portion of the annular radial wall is pressed against the upper side surface of the ring-shaped protrusion, the first outer conductor is provided with a first groove on the lower side of the ring-shaped protrusion, and a third seal member is provided in the first groove.

6. The right angle bend radio frequency coaxial connector according to claim 1, wherein a second insulator is provided inside a stepped boss at a left end of the second outer conductor, an outer step is provided at a left outer periphery of a jack of the second inner conductor, and a right end of the second insulator is caught on the outer step; the center of the left end of the third insulator is provided with a second step-shaped recess, and the second step-shaped recess wraps and fixes the tail end of the jack.

7. The right angle bend radio frequency coaxial connector according to claim 6, wherein a right end center of the third insulator is provided with a horn-shaped conical surface opening, and the conical surface opening is communicated with the second step-shaped recess through a middle through hole; and a plurality of edge through holes are formed in the area outside the central area of the body of the third insulator, and the edge through holes are arranged around the middle through holes.

8. The right angle bend radio frequency coaxial connector of claim 1, wherein the cable clamp has a left end portion that is separately provided with a plurality of second slots.

9. The right angle bend radio frequency coaxial connector of claim 1, wherein the cable retention sleeve and the outer conductor have a threaded engagement length of 5 teeth or more.

10. The right angle bend radio frequency coaxial connector according to claim 1, wherein an outer thread is provided on an outer side of a left end of a cable fixing sleeve, an inner thread is provided on an inner side of a right end of the outer conductor, the cable fixing sleeve can be fixed inside the outer conductor through screw-fitting, and a right end of the cable fixing sleeve protrudes out of the outer conductor; the outer side wall of the cable fixing sleeve and the tail end of the threaded connection part area of the second outer conductor are provided with third grooves, the inner side wall of the second outer conductor is correspondingly provided with fourth grooves, and a fifth sealing piece is arranged in a space surrounded by the third grooves and the fourth grooves.