CN202333260U

CN202333260U - Waterproof SMA (Shape Memory Alloy) type female contact RF (Radio Frequency) connector

Info

Publication number: CN202333260U
Application number: CN2011204116780U
Authority: CN
Inventors: 王铭新; 陆鼎; 朱慧; 常珂; 顾靓亮
Original assignee: Phoenix Company of Chicago Inc
Current assignee: Phoenix Company of Chicago Inc
Priority date: 2011-10-25
Filing date: 2011-10-25
Publication date: 2012-07-11
Anticipated expiration: 2021-10-25

Abstract

The utility model discloses a waterproof SMA (Shape Memory Alloy) type female contact RF (Radio Frequency) connector, relating to the field of electronic communication devices. The waterproof SMA type female contact RF connector comprises a nut, an internal tooth washer, a sealing pad, a shell, an internal conductor, insulating bodies and a line pressing bushing, wherein the front part of the shell is a D-shaped tubular outer screw thread body with a hexagonal prism-shaped annular step at the middle part per se and the one-piece line pressing bushing at the back part per se. According to the waterproof SMA type female contact RF connector disclosed by the utility model, the traditional RF connector design mode is changed; a sealing ring A and a sealing ring B are respectively arranged between the outer side of the insulating body A and the inner wall of the D-shaped tubular outer screw thread body and between the insulating body A and the insulating body B; and penetration of water is blocked efficiently. Therefore, anti-interference performance of the waterproof SMA type female contact RF connector is improved, and use stability of the waterproof SMA type female contact RF connector is ensured; and the waterproof SMA type female contact RF connector can be widely applied to the fields, such as ocean, aerospace, military industry, chemical industry, electromechanical industry and communication.

Description

The female radio frequency connector of a kind of waterproof SMA type

Technical field

The utility model relates to the electronics field, the female radio frequency connector of particularly a kind of waterproof SMA type.

Background technology

Electronics industry is faced with the challenge of electronic system anti-interference problem all the time.Along with the extensive use of electronic equipment, and modern electronic equipment is accurate day by day, complicacy and multifunction, and electromagnetic interference and radio frequency interference problem are serious day by day, it can make equipment performance generation minor variations, weaken, even cause the malfunctioning fully of equipment.Particularly communication, medical field can cause communication disruption, instruction mistake to send out, so that cause great economic loss even jeopardize personal safety if electronic equipment is interfered.

With regard to a system, various electromagnetic interference are the most serious at interface, and the EMI that it can be outside with system conducts or is radiated internal system, can the EMI of internal system be conducted or be radiated the system outside again.Therefore, the connector of interface plays an important role in anti-electromagnetic interference.For adapting to these new situations and the instructions for use of satisfying the user, we plan to develop a series of radio frequency connectors, are used for the signal transmission of holding wire, power line, play the effect of anti-electromagnetism, radio frequency interference simultaneously.

The operational environment of some radio frequency connector is outdoor in addition, or worse workplace, like seawater, chemical industry, space flight or the like; The interference of electromagnetism is not only arranged, also exist the disturbing factor of water, or even have corrosive liquid; Even if indoor, owing to the temperature of climatic environment, the variation of humidity, airborne hydrone can produce condensation in the metal surface; Traditional radio frequency connector mostly is provided with waterproof grommet in a public female junction; To joining under the state of tightening just concrete water-proof function, for highly sensitive, lower powered transmission signal, in case receive the influence of water; Then can produce signal attenuation and short circuit phenomenon, so traditional connector female head is the waterproof requirement that can not satisfy the IP67 grade.

Summary of the invention

To the problem of above-mentioned existence, the utility model aims to provide the female radio frequency connector of a kind of waterproof N type according to the fire resistance characteristic of radio frequency connector.

The utility model solves the technical scheme that its technical problem adopted: the female radio frequency connector of a kind of waterproof SMA type; Comprise nut, internal tooth packing ring, sealing gasket, shell, inner wire, insulator and line ball cover; Described shell front portion is a D shape tubulose external screw thread body, and there is a hexagon circular step center, and a disjunctor line ball sleeve pipe is arranged at its rear portion; The plane is provided with the Gask-O-Seal groove on the hexagon circular step, and plane, D shape tubulose external screw thread side is a milling flat; Be provided with the insulator limited step at D shape tubulose external screw thread body internal diameter; Described insulator comprises insulator A and insulator B, and insulator A is a tubular body, and end face is provided with a concentric circular step above that, and its lateral surface is provided with annular seal ring A groove and limited step; Insulator B is stairstepping in a tubular form.

Described insulator A and insulator B be coaxial to be placed within the shell in the hole mutually, between insulator A and insulator B, is provided with annular seal ring B;

Described inner wire is that two end hollow center are the cylinder of entity, and side axial in the top has the U font groove more than, and a radial perforation is arranged in the side of its lower end, and inner wire is tight fit and connects through insulator A and insulator B endoporus;

Described shell, inner wire are metal material, and insulator A and insulator B are non-metallic material, and sealing gasket, sealing ring A and sealing ring B are a kind of material of rubber, latex, silica gel.

The utility model has changed conventional radio frequency connector Design Mode; Between the outside and D shape tubulose external screw thread body inwall of insulator A, be provided with sealing ring A and sealing ring B between insulator A and the insulator B; Intercepted the infiltration of water effectively; Thereby improved the interference free performance of product, guaranteed the stability that product uses, can be widely used in fields such as ocean, space flight, military project, chemical industry, electromechanics, communication.

Description of drawings

Fig. 1 is the utility model user mode sketch map;

Fig. 2 is the utility model split structural representation.

Among its figure: the 1-nut; 2-internal tooth packing ring; The 3-sealing gasket; The 4-inner wire; 5-sealing ring A; 6-insulator A; 7-sealing ring B; 8-insulator B; The 9-shell.

Embodiment

The utility model is explained the practical implementation method with shown in Figure 2 as most preferred embodiment:

Select 304 for use ^#The stainless steel tube truck goes out circular step, sealing gasket groove and internal diameter limited step, and disjunctor line ball sleeve pipe; Screw plate rubs external thread wire; Side axial at its end of thread mills out plane on a plane to the step, with the circular step outside journal axle to milling into hexagon; Form D shape tube-like envelope 9;

Two insulators can adopt material Mould Machining forming methods such as pottery, polytetrafluoroethylene, polyurethane to make;

4 of inner wires adopt Cu-Ni alloy bar two ends to get out hollow, mill out the U font groove that runs through in the side axial of one of which end, get out a radial perforation in the side of its lower end;

Assemble with the frock special equipment for each parts, wherein inner wire 4 through with insulator A and insulator B endoporus, be tight fit and connect;

After the moulding of the utility model process machined components, should pass through Ageing Treatment,, reduce the stress corrosion in the material surface use in the future to eliminate the stress in the material.

The above is merely a preferred embodiment of the utility model; Can not limit the protection range of the utility model with it; The utility model also can have other structural change; So long as the equalization of doing according to the protection range of the utility model changes and modify, all should belong in the scope that the utility model contains.

Claims

1. the female radio frequency connector of waterproof SMA type comprises nut, internal tooth packing ring, sealing gasket, shell, inner wire, insulator and line ball cover, it is characterized in that:

Described shell front portion is a D shape tubulose external screw thread body; There is a hexagon circular step center; At its rear portion one disjunctor line ball sleeve pipe is arranged, the plane is provided with the Gask-O-Seal groove on the hexagon circular step, and plane, D shape tubulose external screw thread side is a milling flat; Be provided with the insulator limited step at D shape tubulose external screw thread body internal diameter;

Described insulator comprises insulator A and insulator B, and insulator A is a tubular body, and end face is provided with a concentric circular step above that, and its lateral surface is provided with annular seal ring A groove and limited step; Insulator B is stairstepping in a tubular form.

2. the female radio frequency connector of waterproof SMA type according to claim 1 is characterized in that described insulator A and insulator B are coaxial to be placed in mutually within the shell in the hole, between insulator A and insulator B, is provided with annular seal ring B.

3. the female radio frequency connector of waterproof SMA type according to claim 1; It is characterized in that described inner wire is that two end hollow center are the cylinder of entity; Side axial in the top has the U font groove more than; A radial perforation is arranged in the side of its lower end, and inner wire is tight fit and connects through insulator A and insulator B endoporus.

4. according to claim 1 or the female radio frequency connector of 2 or 3 described waterproof SMA types; It is characterized in that described shell, inner wire are metal material; Insulator A and insulator B are non-metallic material, and sealing gasket, sealing ring A and sealing ring B are a kind of material of rubber, latex, silica gel.