CN114927908B - Super small bending radius SMA cable connector - Google Patents
Super small bending radius SMA cable connector Download PDFInfo
- Publication number
- CN114927908B CN114927908B CN202210598350.7A CN202210598350A CN114927908B CN 114927908 B CN114927908 B CN 114927908B CN 202210598350 A CN202210598350 A CN 202210598350A CN 114927908 B CN114927908 B CN 114927908B
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- Prior art keywords
- inner conductor
- insulating medium
- rear end
- section
- limiting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/02—Soldered or welded connections
- H01R4/029—Welded connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
The invention discloses an SMA cable connector with an ultra-small bending radius, which comprises a connecting threaded sleeve, an outer shell, an inner conductor and an insulating medium, wherein the outer shell is concentrically arranged in the connecting threaded sleeve; the invention utilizes the insulation medium designed by the limit boss and the convex structure to carry out axial limit, omits the limit structure of the original inner conductor, shortens the axial length and reduces the bending radius of the coaxial cable on the premise of ensuring the performance of the connector.
Description
Technical Field
The invention relates to the technical field of radio frequency connectors, in particular to an SMA cable connector with an ultra-small bending radius.
Background
At present, the conventional radio frequency coaxial connector applied to a cable is long in overall design, and common connection modes with the coaxial cable include a welding type, a crimping type and an assembling type, but in any connection mode, when the coaxial cable is bent, because the connection position of the coaxial cable and the radio frequency coaxial connector extends out of a connector body or a connection screw sleeve, a final cable assembly needs a large bending radius or bending radius, namely a long straight line length is needed from an electrical appliance reference plane of the radio frequency coaxial connector to the outer side of the coaxial cable, but the straight line length greatly influences the layout and the appearance volume of an engineering device, limits the installation density in the engineering device of the cable assembly, and even more, the product is damaged due to the bending radius, so that the product fails.
Disclosure of Invention
The technical purpose is as follows: the invention discloses an SMA cable connector with an ultra-small bending radius, which can reduce the space occupied by the connector after the coaxial cable is installed, is convenient for field wiring and reduces the occupied volume, and aims to overcome the defects that the rear end of the existing radio frequency connector has a straight line length, so that the formed bending radius is large after the coaxial cable is installed, and the field wiring is influenced.
The technical scheme is as follows: in order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides an ultra-small bend radius SMA cable connector, including connecting the swivel nut, the shell body, inner conductor and insulating medium, the shell body sets up in connecting the swivel nut with one heart, the inner conductor is installed in the shell body through cup jointing the insulating medium of outer lane with one heart, the front end of shell body is equipped with and is used for the spacing boss of insulating medium axial, insulating medium adopts the structure assorted shape with spacing boss department, the inner conductor wears to establish in insulating medium, be equipped with along the circumferencial direction at the rear end of inner conductor and be used for restricting the inner conductor in insulating medium along circumferential direction pivoted edges and corners, the welding bush sets up the rear end at insulating medium, compress tightly insulating medium and inner conductor in the shell body.
Preferably, the external part of the insulating medium of the present invention adopts a convex structure, the step surface on the insulating medium is attached to the end surface of the rear end of the limiting boss, the center of the insulating medium is provided with a central hole along the axial direction for the inner conductor to penetrate and axially limit the inner conductor, the central hole is a two-stage step hole, the diameter of the central hole increases step by step along the front end to the rear end, the central hole is sequentially divided into an inner conductor supporting section, an inner conductor limiting section and an inner conductor insulating section along the axial direction, the front end of the inner conductor penetrates through the inner conductor supporting section, the rear end of the inner conductor is located in the inner conductor limiting section, a second insulating medium for insulating between the inner conductor and the welding bush is arranged in the inner conductor insulating section, and the rear end surface of the second insulating medium is flush with the rear end surface of the insulating medium.
Preferably, the rear end section of the inner conductor of the present invention takes the shape of a regular polygon.
Preferably, the junction of the inner conductor limiting section and the inner conductor supporting section is provided with a conical inclined surface transition.
Preferably, the welding bush and the inner wall of the outer shell are in interference fit, the end face, close to the insulating medium, of the welding bush is provided with positioning pins for preventing the insulating medium from rotating, the positioning pins are symmetrically arranged on the end face of the welding bush, and the insulating medium is provided with anti-rotation counter bores corresponding to the positioning pins
Has the advantages that: the SMA cable connector with the ultra-small bending radius provided by the invention has the following beneficial effects:
1. compared with a typical product of the type which adopts an integral outer shell design, the invention utilizes the insulation medium designed by the limit boss and the convex structure to carry out axial limit, and the inner conductor carries out the limit of the rotational freedom degree of the inner conductor through the edge angle type structure, thereby omitting the original limit structure, shortening the axial length and reducing the bending radius of the coaxial cable on the premise of ensuring the performance of the connector.
2. Compared with the traditional clamping mode through the front and rear insulating media, the axial length is effectively reduced, and the axial fixation of the inner conductor is ensured.
3. The rear end section of the inner conductor adopts a regular polygon shape and is matched with the inner conductor limiting section, so that the inner conductor cannot rotate, and the structure connection and the welding of a coaxial cable are facilitated.
4. The tapered inclined plane is arranged at the junction of the inner conductor limiting section and the inner conductor supporting section for transition, so that the installation of the inner conductor is facilitated, the installation resistance is reduced, and the assembly efficiency of the connector is improved.
5. According to the invention, the welding bush and the inner wall of the outer shell are in interference fit, the positioning pin and the anti-rotation counter bore on the rear end face of the insulating medium are used for limiting the circumference and the axial direction of the insulating medium, the assembly is simple and convenient, the interference fit mainly keeps the circumferential angle unchanged when the welding bush is sleeved, and the self-fixing can be carried out and the limitation on the insulating medium can be completed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is an overall structural view of the present invention;
FIG. 2 is a view showing the structure of the outer case of the present invention;
FIG. 3 is a view of the weld bushing configuration of the present invention;
FIG. 4 is a diagram of the insulating medium structure of the present invention;
FIG. 5 is a view of the inner conductor structure of the present invention;
FIG. 6 is a diagram comparing the present invention with a conventional structure;
the anti-rotation device comprises a connecting threaded sleeve 1, a connecting threaded sleeve 2, an outer shell 3, an inner conductor 4, an insulating medium, a limiting boss 5, a welding bush 6, a central hole 7, an inner conductor supporting section 8, an inner conductor limiting section 9, an inner conductor insulating section 10, a second insulating medium 11, a positioning pin 12 and an anti-rotation counter bore 13.
Detailed Description
The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, without thereby limiting the scope of the invention to the described embodiment.
As shown in fig. 1-6, the SMA cable connector with ultra-small bending radius disclosed by the present invention includes a connection screw sleeve 1, an outer shell 2, an inner conductor 3 and an insulating medium 4, the outer shell 2 is concentrically disposed in the connection screw sleeve 1, the inner conductor 3 is concentrically mounted in the outer shell 2 through the insulating medium 4 sleeved on an outer ring, a limiting boss 5 for axially limiting the insulating medium 4 is disposed at the front end of the outer shell 2, the insulating medium 4 is in a shape matched with the structure of the limiting boss 5, the inner conductor 3 is inserted into the insulating medium 4, an edge angle for limiting the inner conductor 3 to circumferentially rotate in the insulating medium is disposed at the rear end of the inner conductor 3 along the circumferential direction, and a welding bush 6 is disposed at the rear end of the insulating medium 4 to tightly press and fix the insulating medium 4 and the inner conductor 3 in the outer shell 2.
In the connector structure, the thickness of the inner conductor is provided with the anti-rotation edges, so that an additional limiting structure is omitted, the axial occupied space can be shortened, and the rear end of the inner conductor can be set into a structure with a regular polygon section in order to facilitate the impedance design around the inner conductor.
In the conventional axial limiting mode, a boss arranged on an inner conductor is mainly utilized, two sides of the boss are clamped by insulating media, but two insulating media are arranged along the axial direction, the axial length is increased, and the bending radius of a coaxial cable is increased, so that the invention designs an insulating medium structure as shown in fig. 4, the outer part of the insulating medium 4 adopts a convex structure, a step surface on the insulating medium 4 is attached to the end surface of the rear end of a limiting boss 5, the front end of the insulating medium is flush with the surface of the limiting boss 5, when a connector is connected, the influence on signal transmission caused by impedance change at a junction is reduced, a central hole 7 for the inner conductor to penetrate and axially limit the inner conductor is arranged in the center of the insulating medium 4 along the axial direction, the central hole 7 is a secondary step hole, the diameter of the central hole 7 is gradually increased along the front end to the rear end, the central hole 7 is sequentially divided into an inner conductor supporting section 8, an inner conductor limiting section 9 and an inner conductor insulating section 10 along the axial direction, the front end of the inner conductor 3 penetrates through the inner conductor supporting section 8, the rear end of the inner conductor 3 is positioned in the inner conductor limiting section 9, a second insulating medium bushing 11 is arranged in the insulating medium supporting section 6, and the insulating medium bushing 11 for welding the insulating medium to be flush with the insulating medium bushing 4, and the insulating medium bushing 11 for the insulating medium bushing 11, and the insulating medium bushing 11 is arranged in the rear end surface of the insulating medium bushing.
In order to facilitate the installation of the inner conductor 3, the junction of the inner conductor limiting section 9 and the inner conductor supporting section 8 is provided with a conical inclined surface for transition, so that the inner conductor can quickly penetrate from the junction even if the diameter of the inner conductor supporting end 8 is close to the diameter of the inner conductor 3, the assembly difficulty of the connector is reduced, the quick assembly is realized, and the efficiency of field operation is improved.
The welding bush 6 and the inner wall of the outer shell 2 are in interference fit, the end face, close to the insulating medium 4, of the welding bush 6 is provided with positioning pins 12 used for preventing the insulating medium 4 from rotating, the positioning pins 12 are symmetrically arranged on the end face of the welding bush 6, and anti-rotation counter bores 13 corresponding to the positioning pins 12 are arranged on the insulating medium 4. Interference fit between 6 and the 2 inner walls of shell body of welding bush, through locating pin 12 with 4 rear end faces of insulating medium on prevent changeing counter bore 13 and carry out insulating medium's circumference and axial spacing, the equipment is simple and convenient, interference fit can keep the circumference angle unchangeable when welding bush suit mainly, can enough carry out self fixed, can accomplish again spacing to insulating medium.
During assembly, a coaxial cable is concentrically inserted into a welding bush 6, an inner conductor of the coaxial cable sequentially penetrates through a second insulating medium 11 and the inner conductor 3, welding and fixing between the inner conductor of the coaxial cable and the inner conductor 3 and welding and fixing between the coaxial cable and the welding bush 6 are completed, then the insulating medium 4 penetrates through the front end of the inner conductor 3, the insulating medium 4 is rotated to a position where a rotation-preventing counter bore 13 corresponds to a positioning pin 12, assembly of an internal structure is completed, then the whole body is placed into an outer shell 2, the front end of the insulating medium 4 reaches a limiting boss 5 along with increase of the placing depth, meanwhile, the outer surface of the welding bush 6 is gradually contacted with the inner wall of the outer shell 2 to form interference fit, in order to facilitate the penetration of the welding bush 6, an interference section with the diameter larger than that of the welding bush 6 can be arranged at the rear end of the outer shell 2, a fixing section matched with the welding bush 6 is arranged, an inclined plane for guiding is arranged between the guiding section and the fixing section, difficulty in assembling is reduced, the fixing of the welding bush 6, the coaxial cable can be bent and wiring along the junction with the rear end of the welding bush 6 can be more rapid, and the bending radius of the coaxial cable can be more beneficial to the field of the assembly.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (3)
1. The SMA cable connector with the ultra-small bending radius is characterized by comprising a connecting threaded sleeve (1), an outer shell (2), an inner conductor (3) and an insulating medium (4), wherein the outer shell (2) is concentrically arranged in the connecting threaded sleeve (1), the inner conductor (3) is concentrically arranged in the outer shell (2) through the insulating medium (4) sleeved on an outer ring, a limiting boss (5) used for axially limiting the insulating medium (4) is arranged at the front end of the outer shell (2), the insulating medium (4) is in a shape matched with the structure of the limiting boss (5), the inner conductor (3) penetrates through the insulating medium (4), an edge angle used for limiting the inner conductor (3) to rotate in the insulating medium along the circumferential direction is arranged at the rear end of the inner conductor (3), a welding bush (6) is arranged at the rear end of the insulating medium (4), and the insulating medium (4) and the inner conductor (3) are compressed and fixed in the outer shell (2);
the outer part of the insulating medium (4) is of a convex structure, a step surface on the insulating medium (4) is attached to the end surface of the rear end of the limiting boss (5), a central hole (7) for an inner conductor to penetrate and axially limit the inner conductor is arranged in the center of the insulating medium (4) along the axial direction, the central hole (7) is a secondary step hole, the diameter of the central hole (7) is gradually increased along the front end to the rear end, the central hole (7) is sequentially divided into an inner conductor supporting section (8), an inner conductor limiting section (9) and an inner conductor insulating section (10) along the axial direction, the front end of the inner conductor (3) penetrates through the inner conductor supporting section (8), the rear end of the inner conductor (3) is located in the inner conductor limiting section (9), a second insulating medium (11) for insulation between the inner conductor (3) and the welding bush (6) is arranged in the inner conductor insulating section (10), and the rear end surface of the second insulating medium (11) is flush with the rear end surface of the insulating medium (4);
adopt interference fit between the inner wall of welding bush (6) and shell body (2), be equipped with on welding bush (6) the terminal surface that is close to insulating medium (4) and be used for preventing that insulating medium (4) from producing pivoted locating pin (12), locating pin (12) symmetry sets up on the terminal surface of welding bush (6), sets up on insulating medium (4) with locating pin (12) correspond prevent changeing counter bore (13).
2. An SMA cable connector with an ultra-small bending radius according to claim 1, wherein the rear section of the inner conductor (3) is in the shape of a regular polygon.
3. The SMA cable connector of claim 1, wherein a tapered ramp transition is provided at the interface of the inner conductor limiting section (9) and the inner conductor support section (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210598350.7A CN114927908B (en) | 2022-05-30 | 2022-05-30 | Super small bending radius SMA cable connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210598350.7A CN114927908B (en) | 2022-05-30 | 2022-05-30 | Super small bending radius SMA cable connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114927908A CN114927908A (en) | 2022-08-19 |
| CN114927908B true CN114927908B (en) | 2023-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210598350.7A Active CN114927908B (en) | 2022-05-30 | 2022-05-30 | Super small bending radius SMA cable connector |
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| Country | Link |
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| CN (1) | CN114927908B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214754569U (en) * | 2021-05-14 | 2021-11-16 | 德尔特微波电子(南京)有限公司 | Floating SMPM coaxial connector structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6808416B2 (en) * | 2002-04-04 | 2004-10-26 | Yazaki North America, Inc. | Coaxial cable connector |
| CN201303164Y (en) * | 2008-07-24 | 2009-09-02 | 富士康(昆山)电脑接插件有限公司 | Radio frequency coaxial connector |
| IT1395157B1 (en) * | 2009-08-07 | 2012-09-05 | Stucchi Spa | QUICK COUPLING WITH ANTI-LOCK SAFETY DEVICE |
| CN102044764B (en) * | 2009-10-16 | 2014-03-05 | 西安艾力特电子实业有限公司 | Connector for bent connection of coaxial cables |
| CN103794917A (en) * | 2012-10-29 | 2014-05-14 | 西安艾力特电子实业有限公司 | Fixing structure of insulating medium and inner conductor |
| CN207183570U (en) * | 2017-07-14 | 2018-04-03 | 陕西金信诺电子技术有限公司 | A kind of radio frequency (RF) coaxial connector for connecting coaxial cable structure |
| CN207250873U (en) * | 2017-08-30 | 2018-04-17 | 陕西益华电气股份有限公司 | A kind of bent type radio frequency coaxial connector of connecting cable |
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2022
- 2022-05-30 CN CN202210598350.7A patent/CN114927908B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214754569U (en) * | 2021-05-14 | 2021-11-16 | 德尔特微波电子(南京)有限公司 | Floating SMPM coaxial connector structure |
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| Publication number | Publication date |
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| CN114927908A (en) | 2022-08-19 |
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