CN112563838A

CN112563838A - Double-floating radio frequency coaxial adapter

Info

Publication number: CN112563838A
Application number: CN202011509616.3A
Authority: CN
Inventors: 刘斌; 雷峰涛; 杨普庶; 唐超; 赵娟
Original assignee: Shaanxi Huada Science Technology Co Ltd
Current assignee: Shaanxi Huada Science Technology Co Ltd
Priority date: 2020-12-19
Filing date: 2020-12-19
Publication date: 2021-03-26

Abstract

The invention discloses a double-floating radio frequency coaxial adapter, which belongs to the technical field of communication and comprises a shell, a threaded sleeve, a first floating adapter, a second floating adapter, a first spring and a second spring, wherein the first floating adapter is movably arranged at one end of the shell through the threaded sleeve; the second floating adapter is movably arranged at the other end of the shell through a step hole, a first spring is arranged between the first floating adapter and the thread sleeve spring base, and a second spring is arranged between the second floating adapter and the first floating adapter. Compared with the existing structure, the double-floating radio frequency coaxial adapter provided by the invention can be provided with different connection interfaces at the two ends, so that the multi-scene application requirements are met, meanwhile, the two ends of the adapter can float freely along the axial direction and do not interfere with each other, and the adapter is a small-sized blind-mate push-in adapter and has the characteristics of stable and reliable connection, wide working frequency band, excellent mechanical and electrical performance, easiness in installation and the like.

Description

Double-floating radio frequency coaxial adapter

Technical Field

The invention belongs to the technical field of communication, and particularly relates to a double-floating radio frequency coaxial adapter.

Background

The radio frequency coaxial connector (including adapter) is an electrical element which is connected on a cable or installed on instrument equipment to play a role in connection, is widely applied in the aspects of wireless communication and broadcasting, television, radar, navigation, computers, instruments and the like, and is an indispensable element in various radio communication systems and electronic equipment; the coaxial cable is used for transmitting radio frequency signals and is essentially a section of coaxial cable with a connecting structure, and generally consists of an inner conductor, an outer conductor and an insulator, wherein the inner conductor, the outer conductor and the insulator are coaxial.

With the development and development of the radio frequency coaxial adapter, the original adapter with a fixed length is difficult to meet the requirement, and the adapter with a floating function needs to be developed to solve the connection between user boards. The existing floating adapter has the following defects:

1. most of the floating terminals are single-ended floating, and independent floating of different interfaces at two ends cannot be realized;

2. the design of the floating structure in the adapter causes the working frequency to be low, and most of the working frequency is not more than 12 GHz;

3. the design of the spring is unscientific, and the force required by the floating work is too large or too small;

4. the plug contact is unscientific in design, and the situation that the adapter floats to the limit when the plug contact is not plugged in place or is unreliable when the plug contact is plugged in place exists, and the product is slightly floated, butted, plugged and plugged in place and then loosened during work.

Disclosure of Invention

In view of the above technical problems, the present invention provides a dual-floating type rf coaxial adapter, which can be provided with different connection interfaces at two ends thereof to meet the multi-scenario application requirements, and at the same time, the two ends of the adapter can float freely along the axial direction without mutual interference.

The invention solves the problems through the following technical means:

the utility model provides a coaxial adapter of two floating type radio frequencies which characterized in that floats adapter, first adapter, the second that floats, first spring and second spring including shell, swivel nut, first, wherein: an internal thread is arranged on the inner wall of one end of the shell, and a stepped hole is formed in the inner wall of the other end of the shell; the first floating adapter is movably arranged at one end of the shell through a threaded sleeve; the second floating adapter is movably arranged at the other end of the shell through a stepped hole; a first spring is arranged between the first floating adapter and the spring base of the screw sleeve; and a second spring is arranged between the second floating adapter and the spring base of the screw sleeve.

Preferably, the middle part of the spring base is protruded to form a limiting table, and two sides of the limiting table are used for abutting against the first spring and the second spring respectively.

Preferably, the first adapter housing of the first floating adapter is coaxially installed in the screw sleeve and is in clearance fit with the screw sleeve, a first outer adapter is arranged at the tail end of the first adapter housing, a first insulator is coaxially arranged inside the first adapter housing, a first inner conductor is coaxially installed inside the first insulator, a first inner plug and a first outer plug are respectively arranged at two ends of the first inner conductor, and a guide plug is further sleeved on the outer wall of the first inner conductor.

Preferably, the second switching casing of the second floating adapter is coaxially installed in the shell and is in clearance fit with the shell, the second switching casing is divided into a front installation cavity and a rear installation cavity by a middle step, a second outer adapter is installed in the front installation cavity, a guide sleeve and a second insulator are sequentially installed in the rear installation cavity from outside to inside, a second inner conductor is coaxially installed in the middle of the second insulator, a second outer jack and a second inner plug-in hole are respectively formed in two ends of the second inner conductor, the second inner plug-in hole is mutually matched with a first inner plug of the first floating adapter, sliding insertion is achieved, and the guide sleeve is mutually matched with a guide head of the first floating adapter, and sliding insertion is achieved.

Preferably, the distance between the spring base and the first adapter housing is 0.5 mm.

Preferably, the distance between the spring base and the second adapter housing is 1.5 mm.

Preferably, the first outer joint is sleeved with a stabilizing ring.

Preferably, the bottom of the second outer joint is provided with a reed.

Preferably, the end of the second adapter housing is provided with a bushing by a shrink riveting process.

Preferably, the second insulator is uniformly provided with a plurality of through holes along the axial direction.

The double-floating type radio frequency coaxial adapter has the following beneficial effects:

1) the adapter adopts an internal floating and air medium structure, has a compact internal design structure, a small appearance and a wide working frequency band, and has good salt spray resistance because parts are arranged in the shell;

2) the floating structure design in the invention meets the floating requirement, and the floating actions at two ends do not influence each other;

3) the invention adopts two independent springs to ensure different requirements of different interfaces at two ends on the insertion force;

4) in the invention, the contact head design is adopted for the internal and external contacts of the shell, and the contact head is in butt joint after slot splitting and opening expansion, thereby ensuring continuous and reliable contact in work;

5) the inner contact piece adopts a stepped shaft structure and adopts pin and hole opposite insertion, thereby realizing the floating requirement and ensuring the impedance consistency of each coaxial cross section before and after floating and in the floating process of the adapter;

6) the internal and external contact elements of the connector are supported by PEI in an insulating way, so that internal structure shaking caused in insertion and butt joint can be avoided compared with polytetrafluoroethylene, and the working reliability is improved;

7) according to the invention, an air column medium is added to the left end (BMA-K end) PEI insulation support of the adapter, so that the upper limit use frequency of the connector is improved;

8) according to the invention, the first outer joint at the right end (SMP-K end) of the adapter adopts a six-groove split design, so that the control on the insertion and extraction force of a product during insertion is more precise;

9) according to the invention, the shell and the thread sleeve are connected by the thread coated with the thread glue, so that the firmness and the economy of connection are improved.

10) The design of the double-floating structure in the adapter can enable the working frequency to reach 20 GHz.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of a first floating adapter according to the present invention;

figure 3 is a schematic diagram of a second floating adapter according to the present invention;

FIG. 4 is a schematic diagram of a dual inner conductor plugging process of the present invention;

FIG. 5 is a schematic diagram of a second adaptor housing according to the present invention;

FIG. 6 is a schematic view of the guide sleeve and guide head of the present invention in combination;

fig. 7 is a schematic view of the flange structure of the housing of the present invention.

Wherein, 1-shell, 101-flange plate, 102-connecting hole, 2-swivel nut, 201-spring base, 3-first floating adapter, 301-first adapter shell, 302-first external connector, 303-first insulator, 304-first inner conductor, 305-guide head, 306-stabilizing ring, 3041-first inner plug, 3042-first outer plug hole, 4-a second floating adapter, 401-a second adapter housing, 402-a second outer connector, 403-a second insulator, 404-a second inner conductor, 405-a guide sleeve, 406-a reed, 407-a bushing, 4011-a front installation cavity, 4012-a rear installation cavity, 4041-a second outer jack, 4041-a second inner plug hole, 5-a first spring and 6-a second spring.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 7, the double-floating type radio frequency coaxial adapter includes a housing 1, a threaded sleeve 2, a first floating adapter 3, a second floating adapter 4, a first spring 5 and a second spring 6, wherein in the figure, a thread is provided on an inner wall of one end of the housing 1, a step hole is provided on an inner wall of the other end of the housing 1, a flange plate 101 is provided in the middle of the housing 1, and a plurality of connecting holes 102 are symmetrically provided on the flange plate 101.

It should be noted that, the first floating adapter 3 is movably mounted at one end of the housing 1 through the threaded sleeve 2; the second floating adapter 4 is movably arranged at the other end of the shell 1 through a step hole; a first spring 5 is arranged between the first floating adapter 3 and the spring base 201 of the screw sleeve 2; the second spring 6 is arranged between the second floating adapter 4 and the spring base 201 of the thread sleeve 2, the floating structure in the product is designed ingeniously, the design mode of two independent springs is adopted, the floating frequency and the pluggable frequency are large, and the service life of the product is long.

Specifically, the interfaces at the two ends of the adapter are different, and the adapter is not limited to BMA and SMP interfaces, but also applicable to other interfaces. In this embodiment, one end is BMA-K type interface, the other end is SMP-K type interface, and both ends of the adaptor can float freely along the axial direction without mutual interference. The SMP-K type external contact at the right end of the adapter is designed finely, and the insertion and extraction force can be controlled in a small interval when products are butted.

In the figure, the middle part of the spring base 201 protrudes to form a limiting table, and two sides of the limiting table are respectively used for abutting against the first spring 5 and the second spring 6.

As shown in fig. 2, a first adapter housing 301 of the first floating adapter 3 is coaxially installed in the screw sleeve 2 and is in clearance fit with the screw sleeve 2, a first outer connector 302 is disposed at a tail end of the first adapter housing 301, the first outer connector 302 is of a six-split groove structure, a stabilizing ring 306 is sleeved on the first outer connector 302, a first insulator 303 is coaxially disposed inside the first adapter housing 301, the first insulator 303 is of a solid structure, a first inner conductor 304 is coaxially installed inside the first insulator 303, a first inner plug 3041 and a first outer plug 3042 are respectively disposed at two ends of the first inner conductor 304, a guide plug 305 is further sleeved on an outer wall of the first inner conductor 304, and an inner through hole and an outer wall of the guide plug 305 are interference-assembled on an inner wall of the first adapter housing 301.

As shown in fig. 3, a second adapter housing 401 of the second floating adapter 4 is coaxially mounted in the housing 1 and is in clearance fit with the housing 1, a bushing 407 is disposed at the end of the second adapter housing 401 through a rivet receiving process, the second adapter housing 401 is divided into a front mounting cavity 4011 and a rear mounting cavity 4012 by a middle step, as shown in fig. 5, a second outer connector 402 is mounted in the front mounting cavity 4011, a reed 406 is disposed at the bottom of the second outer connector 402, a guide sleeve 405 and a second insulator 403 are sequentially mounted in the rear mounting cavity 4012 from outside to inside, a second inner conductor 404 is coaxially mounted in the middle of the second insulator 403, and a second outer jack 4041 and a second inner plug-in hole 4041 are disposed at two ends of the second inner conductor 404.

As shown in fig. 4, the second inner socket 4041 is matched with the first inner plug 3041 of the first floating adapter 3 for sliding insertion, and as shown in fig. 6, the guide sleeve 405 is matched with the guide head 305 of the first floating adapter 3 for sliding insertion and guiding docking.

It should be further noted that the distance S between the spring base 201 and the first adaptor housing 301 is 0.5mm, and the distance L between the spring base 201 and the second adaptor housing 401 is 1.5 mm. At this time, the BMA end floating distance is 1.5mm max, the SMP end floating distance: 0.5mm max.

Specifically, the second insulator 403 is symmetrically provided with a plurality of through holes, and an air medium structure is adopted, so that the structure is compact, the appearance is small and exquisite, the working frequency band is wide, and the mechanical and electrical properties are excellent. The embodiment is a double-floating radio frequency coaxial adapter which is small, blind in matching, push-in, high in reliability, wide in working frequency range, excellent in mechanical and electrical performance, and mainly used for floating connection between user boards, and has a wide application prospect.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a coaxial adapter of two floating type radio frequencies, its characterized in that, includes shell (1), swivel nut (2), first adapter (3) that float, the second adapter (4), first spring (5) and second spring (6) that float, wherein:

threads are arranged on the inner wall of one end of the shell (1), and a step hole is formed in the inner wall of the other end of the shell (1);

the first floating adapter (3) is movably arranged at one end of the shell (1) through a threaded sleeve (2);

the second floating adapter (4) is movably arranged at the other end of the shell (1) through a stepped hole;

a first spring (5) is arranged between the first floating adapter (3) and the spring base (201) of the screw sleeve (2);

and a second spring (6) is arranged between the second floating adapter (4) and the spring base (201) of the screw sleeve (2).

2. The double floating type radio frequency coaxial adapter according to claim 1, wherein the middle part of the spring base (201) is protruded to form a limit table, and two sides of the limit table are respectively used for abutting against the first spring (5) and the second spring (6).

3. The dual floating rf coaxial adapter according to claim 2, wherein the first floating adapter housing (301) of the first floating adapter (3) is coaxially installed in the screw sleeve (2) and is in clearance fit with the screw sleeve (2), the first adapter housing (301) is provided with a first outer adapter (302) at a terminal end thereof, a first insulator (303) is coaxially arranged inside the first adapter housing (301), a first inner conductor (304) is coaxially installed inside the first insulator (303), a first inner plug (3041) and a first outer socket (3042) are respectively provided at two ends of the first inner conductor (304), and a guiding plug (305) is further sleeved on an outer wall of the first inner conductor (304).

4. The double-floating type radio frequency coaxial adapter according to claim 3, wherein the second adapter housing (401) of the second floating adapter (4) is coaxially installed in the housing (1) and is in clearance fit with the housing (1), the second adapter housing (401) is divided into a front installation cavity (4011) and a rear installation cavity (4012) by a middle step, the front installation cavity (4011) is internally provided with the second outer connector (402), the rear installation cavity (4012) is sequentially provided with the guide sleeve (405) and the second insulator (403) from outside to inside, the middle of the second insulator (403) is coaxially provided with the second inner conductor (404), the two ends of the second inner conductor (404) are respectively provided with the second outer jack (4041) and the second inner jack (4041), the second inner jack (4041) is matched with the first inner plug (3041) of the first floating adapter (3), and the first floating adapter (3041) is matched with the second floating adapter, Realize sliding insertion, the uide bushing (405) mutually supports, realizes sliding insertion with direction head (305) of first unsteady adapter (3).

5. The dual floating rf coaxial adapter according to claim 4, wherein the distance (S) between the spring base (201) and the first adapter housing (301) is 0.5 mm.

6. The dual floating rf coaxial adapter of claim 5, wherein the distance (L) between the spring mount (201) and the second adapter housing (401) is 1.5 mm.

7. The dual floating rf coaxial adapter of claim 6, wherein the first outer joint (302) is sleeved with a stabilizing ring (306).

8. The dual floating radio frequency coaxial adapter according to claim 7, wherein a bottom of the second outer contact (402) is provided with a spring (406).

9. The dual floating radio frequency coaxial adapter of claim 8, wherein the distal end of the second adapter housing (401) is provided with a bushing (407) by a shrink riveting process.

10. The double floating radio frequency coaxial adapter according to claim 9, wherein the second insulator (403) is uniformly provided with a plurality of through holes along an axial direction.