CN110911908A - Anti-loosening SMA radio frequency plug - Google Patents
Anti-loosening SMA radio frequency plug Download PDFInfo
- Publication number
- CN110911908A CN110911908A CN201911131811.4A CN201911131811A CN110911908A CN 110911908 A CN110911908 A CN 110911908A CN 201911131811 A CN201911131811 A CN 201911131811A CN 110911908 A CN110911908 A CN 110911908A
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- sma radio
- fastening nut
- nut
- locking nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- 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
-
- 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
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/622—Screw-ring or screw-casing
Abstract
The anti-loose SMA radio frequency plug is used for being in threaded connection with an SMA radio frequency socket, the SMA radio frequency socket is provided with an external thread in threaded connection with the SMA radio frequency plug, and the SMA radio frequency plug comprises a fastening nut which is in threaded connection with the external thread of the SMA radio frequency socket; one end of the hexagonal screwing head of the fastening nut, which faces the SMA radio frequency socket, is provided with an outer circular surface, and the outer circular surface is connected with a locking nut; one end of the locking nut, which faces the SMA radio frequency socket, is in threaded connection with the external thread of the SMA radio frequency socket; when the fastening nut and the locking nut rotate reversely, the fastening nut and the locking nut approach to each other or move away from each other. The SMA radio frequency socket disclosed by the invention does not need to be changed, only needs to properly improve the SMA radio frequency plug, still adopts threaded connection, is simple to operate, has small influence on equipment, and does not obviously increase the cost and the weight. The invention can be continuously used in old equipment, and for a connector manufacturer, a new SMA radio frequency socket does not need to be designed, thereby reducing the product variety and the development cost.
Description
Technical Field
The invention relates to the technical field of electric connectors, in particular to an anti-loose SMA radio frequency plug applied to an SMA radio frequency coaxial connector.
Background
The SMA series radio frequency coaxial connector is produced according to the MIL-PRF-39012 standard, has small volume, wide frequency band and excellent performance in the field of radio frequency transmission of military industry, commercial industry and the like, and is particularly suitable for radio frequency connection in an electronic system with the frequency of 18GHz or even higher. Radio frequency interfaces have become mainstream, indispensable and irreplaceable at present. The SMA series adopts a threaded connection mode, and domestic and foreign connectors are in the same line, and the threaded connection is taken as a connection mode which is popularized firstly.
The SMA radio frequency coaxial connector comprises an SMA radio frequency socket and an SMA radio frequency plug, and FIG. 1 shows a schematic diagram of the SMA radio frequency socket, and the SMA radio frequency socket is provided with an external thread for connection. Fig. 2 is a schematic diagram of an SMA radio frequency plug with a fastening nut for screwing with an external thread of an SMA radio frequency socket. Fig. 3 is a schematic diagram of connection of an SMA radio frequency plug to an SMA radio frequency socket. The threaded connection can be self-locked, but under the conditions of strong vibration and long-time use, even if a torque wrench is used for screwing the fastening nut, the fastening nut still has the possibility of loosening, and particularly, when the SMA radio frequency connector is applied to military products, once the fastening nut is loosened, fatal loss can be caused. Therefore, it is urgently required to conduct further intensive research.
In order to solve the loosening problem, equipment manufacturers and connector manufacturers have performed close cooperation, and the currently known anti-loosening solutions include: glue joint type, push-pull snap lock type, fuse type, etc. The comparison is shown in table 3:
although not perfect, solution B is only used passively because there is no better solution for certain military aviation, which is an important aircraft project. Although the anti-loosening problem is solved, the interfaces of the new equipment and the old equipment are different, namely the new equipment and the old equipment are different in interface, the new plug cannot be exchanged with the old socket, the old equipment cannot be used on the new airplane, and therefore a small obstacle is brought to the combat readiness of our army. While the ADIALL sockets are threaded, there is no such male key at the root of the socket of solution B, i.e., solution B has a significant drawback.
Because the external thread length of the SMA radio frequency socket is limited, the difficulty of realizing the thread anti-loose connection under the condition of not changing the SMA radio frequency socket is very high, and therefore, a new technical solution is urgently needed at present.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses an anti-loose SMA radio frequency plug, which aims to solve the problem of loosening of an SMA radio frequency coaxial connector and meet the following conditions:
1) keeping the SMA radio frequency socket unchanged;
2) only the SMA radio frequency plug is properly changed, and the SMA radio frequency plug does not use a fuse;
3) lower cost and increased weight.
In order to achieve the purpose, the invention adopts the following technical scheme:
the anti-loose SMA radio frequency plug is used for being in threaded connection with an SMA radio frequency socket, the SMA radio frequency socket is provided with an external thread in threaded connection with the SMA radio frequency plug, and the SMA radio frequency plug comprises a fastening nut which is in threaded connection with the external thread of the SMA radio frequency socket; one end of the hexagonal screwing head of the fastening nut, which faces the SMA radio frequency socket, is provided with an outer circular surface, and the outer circular surface is connected with a locking nut; one end of the locking nut, which faces the SMA radio frequency socket, is in threaded connection with the external thread of the SMA radio frequency socket; when the fastening nut and the locking nut rotate reversely, the fastening nut and the locking nut approach to each other or move away from each other.
In order to further improve the technical scheme, a limiting ring is arranged on the outer circular surface of the fastening nut, the locking nut is provided with an inner circular surface, a limiting groove corresponding to the limiting ring is arranged on the inner circular surface, and the width of the limiting groove is larger than that of the limiting ring; the fastening nut and the locking nut are axially matched and connected with the limiting groove through the limiting ring; when the fastening nut and the locking nut rotate reversely, the fastening nut and the locking nut are close to or far away from each other through the limiting ring and the limiting groove.
In order to further improve the technical scheme, the diameter of the outer circular surface of the fastening nut is smaller than the outer diameter of the hexagonal screwing head, and a limiting ring is arranged on the outer circular surface; the locking nut is provided with an inner circular surface, and a limiting groove corresponding to the limiting ring is arranged on the inner circular surface, wherein the width of the limiting groove is greater than that of the limiting ring; the fastening nut and the locking nut are axially matched and connected with the limiting groove through the limiting ring; when the fastening nut and the locking nut rotate reversely, one end of the locking nut and the hexagonal screwing head of the fastening nut are close to each other or far away from each other.
In order to further improve the technical scheme, the limiting ring is a retaining ring for the shaft, a retaining ring groove is formed in the outer circular surface of the fastening nut, and the retaining ring for the shaft is arranged in the retaining ring groove.
In order to further improve the technical scheme, a connecting external thread is arranged on the outer circular surface of the fastening nut, a connecting internal thread in threaded connection with the connecting external thread is arranged on the locking nut, and the fastening nut and the locking nut are connected with the connecting internal thread through the connecting external thread; when the fastening nut and the locking nut rotate reversely, the fastening nut and the locking nut are close to or far away from each other through the connecting external thread and the connecting internal thread.
In order to further improve the technical scheme, the connecting external thread of the fastening nut and the connecting internal thread of the locking nut are both reverse-rotation threads.
Due to the adoption of the technical scheme, compared with the background technology, the invention has the following beneficial effects:
the SMA radio frequency socket disclosed by the invention does not need to be changed, only needs to properly improve the SMA radio frequency plug, still adopts threaded connection, is simple to operate, has small influence on equipment, and does not obviously increase the cost and the weight.
The invention can be continuously used and used in old equipment, provides great convenience for equipment which applies a large number of SMA radio frequency sockets, and can realize looseness prevention without a better socket. In addition, for a connector manufacturer, a new SMA radio frequency socket does not need to be designed and produced, and the product variety and the development cost are reduced.
Drawings
Fig. 1 is a schematic structural diagram of an SMA radio frequency socket.
Fig. 2 is a schematic structural diagram of a SMA radio frequency plug of the prior art.
Fig. 3 is a schematic structural view of a SMA radio frequency plug and an SMA radio frequency socket in a screw joint manner in the prior art.
Fig. 4 is a schematic structural diagram of the SMA radio frequency plug of the present invention.
Fig. 5 is a schematic structural diagram of the screw connection of the SMA radio frequency plug and the SMA radio frequency socket in embodiment 1.
Fig. 6 is a schematic structural diagram of the screw connection of the SMA radio frequency plug and the SMA radio frequency socket in embodiment 2.
Fig. 7 is a schematic structural diagram of a bolt connection between the SMA radio frequency plug and the SMA radio frequency socket in embodiment 3.
In the figure: 1. an SMA radio frequency socket; 2. an SMA radio frequency plug; 3. fastening a nut; 3.1, a limiting ring; 3.2, connecting external threads; 4. locking the nut; 4.1, a limiting groove; and 4.2, connecting the internal threads.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
Example 1:
an anti-loose SMA radio frequency plug is shown in figure 4 and is used for being in threaded connection with an SMA radio frequency socket 1, wherein the SMA radio frequency socket 1 is provided with an external thread in threaded connection with an SMA radio frequency plug 2, the SMA radio frequency plug 2 comprises a fastening nut 3, and the fastening nut 3 is in threaded connection with the external thread of the SMA radio frequency socket 1; the 3 hexagonal screwing heads of the fastening nut are provided with outer circular surfaces towards one end of the SMA radio frequency socket 1, the outer circular surfaces are connected with locking nuts 4, and the locking nuts 4 are provided with hexagonal screwing heads of the same specification as the fastening nut 3.
As shown in fig. 5, a limiting ring 3.1 is arranged on the outer circular surface of the fastening nut 3, the locking nut 4 is provided with an inner circular surface, and a limiting groove 4.1 corresponding to the limiting ring is arranged on the inner circular surface, wherein the width of the limiting groove 4.1 is greater than that of the limiting ring 3.1; the fastening nut 3 and the locking nut 4 are axially matched and connected with the limiting groove 4.1 through the limiting ring 3.1. When the fastening nut 3 and the locking nut 4 are assembled, the locking nut 4 is heated to enable the diameter of the locking nut 4 to be increased, and then the fastening nut 3 is sleeved with the locking nut 4, so that the limiting ring 3.1 enters the limiting groove 4.1. Since the width of the stop groove 4.1 is greater than the width of the stop ring 3.1, the clamping nut 3 has a certain axial movement relative to the union nut 4.
When the SMA radio frequency plug 2 and the SMA radio frequency socket 1 need to be locked, the fastening nut 3 and the locking nut 4 rotate reversely, the fastening nut 3 and the locking nut 4 are close to each other, and the limiting ring 3.1 is pressed at one end of the limiting groove 4.1, so that an acting force is generated between the limiting ring 3.1 and the limiting groove 4.1. The action direction of this effect is opposite with the direction of motion, makes fastening nut 3, lock nut 4 become the pressurized body and takes place compression deformation respectively, and compression deformation makes threaded connection produce the pretightning force, and the pretightning force can prevent that threaded connection from taking off and taking off.
After the SMA radio frequency plug 2 is in threaded connection with the SMA radio frequency socket 1, the jack is inserted into the contact pin, and the size of the insertion is kept to the original interface size. That is, the SMA radio frequency plug 2 retains all the functions and performance of the original SMA plug.
Example 2:
the SMA radio frequency plug in this embodiment differs from that described in embodiment 1 only in that: as shown in fig. 6, when the fastening nut 3 and the lock nut 4 rotate in opposite directions, the fastening nut 3 and the lock nut 4 approach each other, one end of the lock nut 4 contacts with the hexagonal screwing head of the fastening nut 3 and generates an extrusion force, and at this time, the limit ring 3.1 does not contact with any groove surface of the limit groove 4.1. The action direction of the extrusion force is opposite to the movement direction, the fastening nut 3 and the locking nut 4 are made to be pressed bodies respectively and are subjected to compression deformation, the compression deformation enables the threaded connection to generate pretightening force, and the pretightening force can prevent the threaded connection from loosening.
Example 3:
the SMA radio frequency plug in this embodiment differs from that described in embodiment 1 only in that: as shown in fig. 7, the outer circular surface of the fastening nut 3 is provided with a connecting external thread 3.2, the locking nut 4 is provided with a connecting internal thread 4.2 screwed with the connecting external thread 3.2, and the connecting external thread 3.2 and the connecting internal thread 4.2 are counter-rotating threads. The fastening nut 3 and the locking nut 4 are connected with the connecting internal thread 4.2 through the connecting external thread 3.2.
When SMA radio frequency plug 2 and SMA radio frequency socket 1 need locking, fastening nut 3 and lock nut 4 reverse rotation, fastening nut 3 and lock nut 4 are close to each other, the left-hand thread at 4 both ends of lock nut makes lock nut 4 become the pressurized body and take place compression deformation, the reaction force of lock nut 4 makes fastening nut 3 also become the pressurized body and take place compression deformation, compression deformation makes threaded connection produce the pretightning force, the pretightning force can prevent that threaded connection from taking off and taking off.
It can also be seen that whether the connecting external thread 3.2 and the connecting internal thread 4.2 are counter-rotating threads or not and whether the thread pitches are different from those of the external thread of the SMA radio frequency socket 1 or not, the fastening nut 3 and the locking nut 4 can be made into pressed bodies to be deformed under pressure, and the threaded connection is prevented from loosening.
The present invention is not described in detail in the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The anti-loose SMA radio frequency plug is used for being in threaded connection with an SMA radio frequency socket (1), the SMA radio frequency socket (1) is provided with an external thread in threaded connection with an SMA radio frequency plug (2), the SMA radio frequency plug (2) comprises a fastening nut (3), and the fastening nut (3) is in threaded connection with the external thread of the SMA radio frequency socket (1); the method is characterized in that: one end, facing the SMA radio frequency socket (1), of the hexagonal screwing head of the fastening nut (3) is provided with an outer circular surface, and the outer circular surface is connected with a locking nut (4); one end of the locking nut (4) facing the SMA radio frequency socket (1) is in threaded connection with the external thread of the SMA radio frequency socket (1); when the fastening nut (3) and the locking nut (4) rotate reversely, the fastening nut (3) and the locking nut (4) approach to each other or move away from each other.
2. An anti-loose SMA radio frequency plug as claimed in claim 1, wherein: a limiting ring (3.1) is arranged on the outer circular surface of the fastening nut (3), the locking nut (4) is provided with an inner circular surface, a limiting groove (4.1) corresponding to the limiting ring is arranged on the inner circular surface, and the width of the limiting groove (4.1) is larger than that of the limiting ring (3.1); the fastening nut (3) and the locking nut (4) are axially matched and connected with the limiting groove (4.1) through a limiting ring (3.1); when the fastening nut (3) and the locking nut (4) rotate reversely, the fastening nut (3) and the locking nut (4) are close to or far away from each other through the limiting ring (3.1) and the limiting groove (4.1).
3. An anti-loose SMA radio frequency plug as claimed in claim 1, wherein: the diameter of the outer circular surface of the fastening nut (3) is smaller than the outer diameter of the hexagonal screwing head, and a limiting ring (3.1) is arranged on the outer circular surface; the locking nut (4) is provided with an inner circular surface, a limiting groove (4.1) corresponding to the limiting ring is arranged on the inner circular surface, and the width of the limiting groove (4.1) is larger than that of the limiting ring (3.1); the fastening nut (3) and the locking nut (4) are axially matched and connected with the limiting groove (4.1) through a limiting ring (3.1); when the fastening nut (3) and the locking nut (4) rotate reversely, one end of the locking nut (4) and the hexagonal screwing head of the fastening nut (3) are close to each other or far away from each other.
4. An anti-loose SMA radio frequency plug as claimed in claim 2 or 3, wherein: the limiting ring (3.1) is a check ring for the shaft, a check ring annular groove is formed in the outer circular surface of the fastening nut (3), and the check ring for the shaft is installed in the check ring annular groove.
5. An anti-loose SMA radio frequency plug as claimed in claim 1, wherein: the outer circular surface of the fastening nut (3) is provided with a connecting external thread (3.2), the locking nut (4) is provided with a connecting internal thread (4.2) which is in threaded connection with the connecting external thread (3.2), and the fastening nut (3) and the locking nut (4) are connected with the connecting internal thread (4.2) through the connecting external thread (3.2); when the fastening nut (3) and the locking nut (4) rotate reversely, the fastening nut (3) and the locking nut (4) are close to or far away from each other through the connecting external thread (3.2) and the connecting internal thread (4.2).
6. An anti-loose SMA radio frequency plug as claimed in claim 5, wherein: the connecting external thread (3.2) of the fastening nut (3) and the connecting internal thread (4.2) of the locking nut (4) are both counter-rotating threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911131811.4A CN110911908A (en) | 2019-11-18 | 2019-11-18 | Anti-loosening SMA radio frequency plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911131811.4A CN110911908A (en) | 2019-11-18 | 2019-11-18 | Anti-loosening SMA radio frequency plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110911908A true CN110911908A (en) | 2020-03-24 |
Family
ID=69817933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911131811.4A Withdrawn CN110911908A (en) | 2019-11-18 | 2019-11-18 | Anti-loosening SMA radio frequency plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110911908A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2313763A (en) * | 1941-12-24 | 1943-03-16 | Louis E Olsen | Nut assembly |
| WO1999063629A1 (en) * | 1998-06-04 | 1999-12-09 | Porter Frank Kendall Jr | Locking coupling assembly |
| CN105390866A (en) * | 2015-12-15 | 2016-03-09 | 镇江步云电子有限公司 | Double-threaded sealing connector component |
| CN205376856U (en) * | 2016-02-16 | 2016-07-06 | 镇江浩华通讯有限公司 | SMA connector |
| CN208173895U (en) * | 2018-04-27 | 2018-11-30 | 河南省优普密封科技有限公司 | A kind of automobile-used ABS solenoid valve conducting wire |
| CN208738522U (en) * | 2018-07-09 | 2019-04-12 | 郑州宇通客车股份有限公司 | A kind of cable locking head |
| CN209487881U (en) * | 2019-01-04 | 2019-10-11 | 深圳市柯耐特科技有限公司 | A kind of gas-electricity mixed loading connector |
-
2019
- 2019-11-18 CN CN201911131811.4A patent/CN110911908A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2313763A (en) * | 1941-12-24 | 1943-03-16 | Louis E Olsen | Nut assembly |
| WO1999063629A1 (en) * | 1998-06-04 | 1999-12-09 | Porter Frank Kendall Jr | Locking coupling assembly |
| CN105390866A (en) * | 2015-12-15 | 2016-03-09 | 镇江步云电子有限公司 | Double-threaded sealing connector component |
| CN205376856U (en) * | 2016-02-16 | 2016-07-06 | 镇江浩华通讯有限公司 | SMA connector |
| CN208173895U (en) * | 2018-04-27 | 2018-11-30 | 河南省优普密封科技有限公司 | A kind of automobile-used ABS solenoid valve conducting wire |
| CN208738522U (en) * | 2018-07-09 | 2019-04-12 | 郑州宇通客车股份有限公司 | A kind of cable locking head |
| CN209487881U (en) * | 2019-01-04 | 2019-10-11 | 深圳市柯耐特科技有限公司 | A kind of gas-electricity mixed loading connector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20110318098A1 (en) | Screw-type connector having reinforced locking | |
| CN102593620A (en) | Fast self-lock thread coupling port connector mechanism | |
| EP4074993A1 (en) | Rotation-stopping and disengagement-stopping gasket, fastening connection mechanism and fastening method | |
| JP2019508863A (en) | Connector and cable with torque limiting feature | |
| CN112615205B (en) | Miniaturized rotary locking device | |
| GB2109645A (en) | Self-locking electrical connector | |
| CN105144504B (en) | Plug-in connector | |
| US20230208085A1 (en) | Ganged coaxial connector assembly with removable connector-cable configuration | |
| CN110911908A (en) | Anti-loosening SMA radio frequency plug | |
| KR200401245Y1 (en) | Locking Apparatus of Connecter | |
| CN206135075U (en) | Connector constructs from individual malposed tooth | |
| US4629273A (en) | Electrical cable connector assembly | |
| CN215521584U (en) | Anti-loose nut | |
| CN209913123U (en) | Butt-joint type aviation connector | |
| CN211958100U (en) | Circular connector with anti-loosening structure | |
| CN202817388U (en) | Radio frequency coaxial connection mechanism | |
| CN209266728U (en) | A kind of multiple thread locking connector | |
| CN106558803A (en) | A kind of adapter self-locking structure | |
| CN204361391U (en) | A kind of shockproof cylindrical connector | |
| CN102842816A (en) | Radio frequency coaxial connecting mechanism | |
| CN108376882B (en) | Connecting structure of cable quick-connection plug and socket | |
| KR100354448B1 (en) | Center Jack Screw Type Connector System | |
| CN112736596A (en) | High-reliability self-locking radio frequency connector structure | |
| CN110867691A (en) | Self-locking radio frequency coaxial connector | |
| CN217956233U (en) | Damping type SMA connector thread locking mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200324 |
|
| WW01 | Invention patent application withdrawn after publication |