CN206180145U - Open -air fast -assembling sealed connector - Google Patents

Abstract

The utility model belongs to the technical field of the radio frequency connector, a open -air fast -assembling sealed connector is related to, cable subassembly, nut component, shells assembly and central needle including the coaxial coupling, the centre gripping has an embedding cover between nut component and the shells assembly, and the embedding cover is including coaxial integrated into one piece's pipe portion and ring portion, and in pipe portion penetrated the resonant cavity, the outer weaving layer and the oversheath of cable front end were pushed aside and is turned up, and pipe portion inserts between interior weaving layer and the outer weaving layer, and ring portion and nut component front end are with outer weaving layer and the oversheath partial centre gripping that turns up. The utility model discloses the embedding cover can be decided the front end clamp fastening of cable with nut component and shells assembly to having fine electromagnetic shield effect, avoiding the pine to take off, the equipment mode is simple, connects reliably, need not professional instrument, and the nothing needs the electric power welding, can realize field work.

Description

Field Quick Release Sealed Connector

technical field

The utility model relates to the technical field of radio frequency connectors, in particular to an outdoor quick-installation sealed connector.

Background technique

RF connectors, as a joint of communication cables, require reliable physical and electrical connections, and ensure microwave transmission performance. With the development of the microwave communication industry, microwave equipment will be deployed in various specific places, such as airports, docks, highways, high-speed rail, main railway lines, hydropower stations, military applications, etc. In the initial stage of the construction of these specific areas, microwave communication lines and infrastructure construction were carried out simultaneously. In these newly constructed buildings, when there is no electricity in the early morning, communication lines still need to be laid, which is carried out simultaneously with infrastructure construction. Such working conditions bring a lot of inconvenience to the existing RF connector connection:

1. In the typical structure of outdoor connectors commonly used at present, the center pin and the cable center conductor can only be welded indoors, and cannot be assembled in the wild.

2. A popular type of connection between the center pin and the cable center conductor is realized by physical plugging. However, when the cable has a multi-core structure, it cannot be plugged directly.

3. Some connector ports will be fixed by heat-shrinkable sleeves, but only through heat-shrinkable sleeves, it cannot guarantee the tension caused by heat shrinkage and cold expansion of cables under temperature changes during outdoor work. between the cable and the cable.

4. Some connector ports will be fixed by metal ties, but because the cable sheath and outer shielding layer are soft, the metal ties may not be able to hold down, resulting in loosening; if the card is too tight, it will inevitably lead to communication Changes in cable construction lead to changes in RF performance.

When the communication cable is multi-core, there are special requirements for this field quick-fit sealed connector.

Therefore, it is necessary to provide a new radio frequency connector that can meet the requirements of fast connection when there is no electricity, no professional tools and professional equipment can not be present.

Utility model content

The main purpose of the utility model is to provide an outdoor quick-installation sealed connector.

The utility model achieves the above object through the following technical solutions: a field quick-installation sealed connector, including a coaxially connected cable assembly, a nut assembly and a housing assembly, the cable assembly includes a central conductor assembly, wrapped around the cable central conductor The outer inner braided layer, the outer braided layer wrapped outside the inner braided layer, and the outer sheath wrapped outside the outer braided layer, the nut assembly is axially hollow and internally divided into a resonant cavity with a larger inner diameter and a resonant cavity with a smaller inner diameter. The cable fixing chamber, the cable assembly passes through the nut assembly from the cable fixing chamber, the nut assembly passes through the open rear part of the housing assembly, and is screwed together, and an embedded sleeve is clamped between the nut assembly and the housing assembly , the embedded sleeve includes a coaxial and integrally formed tube and ring, the tube penetrates into the resonant cavity, the outer braid and outer sheath at the front end of the cable are pulled apart and turned outward, and the tube is inserted between the inner braid and the outer braid Between the ring part and the front end of the nut assembly, the outer braiding layer and the outer sheath are clamped.

Specifically, an insulating washer is clamped between the shell component and the ring portion and is passed through by the cable central conductor component.

Specifically, the outer side of the tube portion is a conical surface that shrinks backwards.

Further, a sleeve is also accommodated in the resonant cavity, the sleeve is sleeved on the outside of the cable outer sheath, and the inside of the sleeve has a taper adapted to the pipe portion.

Further, the sleeve has slots.

Specifically, the inner wall of the cable fixing cavity is provided with several inner grooves, and the first sealing ring for sealing the gap between the nut assembly and the cable assembly is installed in the inner grooves.

Specifically, an outer groove is provided on the outer wall of the nut assembly, and a second sealing ring for sealing the gap between the nut assembly and the housing assembly is installed in the outer groove.

Specifically, the central conductor assembly includes a central conductor sheath and a multi-strand core wire wrapped by the central conductor sheath, and the core wire is electrically connected to the center pin.

Adopt above-mentioned technical scheme, the beneficial effect of technical scheme of the present utility model is:

1. The embedded sleeve of the utility model can clamp and fix the front end of the cable with the nut assembly and the shell assembly, and has a good electromagnetic shielding effect, avoiding loosening, simple assembly method, reliable connection, no need for professional tools, and no need for electricity Welding can realize field work.

2. The insulating gasket is a transition layer designed to ensure the radio frequency performance, and to avoid the possible separation and center shift of the cable core wire after the cable is stripped.

3. The tapered surface structure of the pipe part can make the outer braid and outer sheath turn outward smoothly and conform to its expansion, and the surface contact is pressed tightly to avoid the problem of pinching.

4. The casing can cooperate with the structure of the pipe to hold it tightly from the outside of the cable, so that the cable is fixed more firmly.

5. Slots allow the casing to change in tightness, and better cooperate with the pipe to clamp the outer braid and outer sheath of the cable.

6. The first sealing ring and the second sealing ring can prevent external moisture from entering the connector to corrode metal parts and cause changes in electrical performance.

7. The central conductor sheath can gather and fix the central conductor head of the multi-core cable, which is beneficial to connect with the central pin of the connector.

Description of drawings

Fig. 1 is a sectional view of the field quick-installed sealed connector of the present invention;

Figure 2 is a full sectional view of the embedded sleeve;

Figure 3 is a full sectional view of the casing;

Figure 4 is a full sectional view of the nut assembly.

The numbers in the figure indicate:

1-cable assembly,

11 - center conductor assembly,

12 - inner braid,

13 - outer braid,

14 - outer sheath;

2-embedded sets,

21-pipe,

22-annulus;

3- casing,

31 - slotting;

4-nut assembly,

41 - resonant cavity,

42-cable fixing cavity,

43 - inner groove,

43a-first sealing ring,

44-external thread,

45 - outer groove,

45a-the second sealing ring;

5-shell assembly;

6- center pin kit;

7 - center pin;

8 - Insulating washers.

detailed description

Below in conjunction with specific embodiment the utility model is described in further detail.

As shown in Figure 1, a field quick-fit sealed connector includes a coaxially connected cable 1, a nut assembly 4, a housing assembly 5, and a center pin 7. The cable assembly 1 includes a center conductor assembly 11 wrapped in an inner braid 12 outer braided layer 13 and an outer sheath 14 wrapped outside the outer braided layer 13 . The nut assembly 4 is hollow in the axial direction and is divided into a resonant cavity 41 with a larger inner diameter and a cable fixing cavity 42 with a smaller inner diameter. The cable assembly 1 penetrates the nut assembly 4 from the cable fixing cavity 42, and the nut assembly 4 penetrates the housing assembly 5 The rear part is open, and is threadedly connected with the internal thread (not marked) of the shell assembly 4 through the external thread 44 on the outer periphery of the nut assembly 4 . The center pin 7 penetrates the housing assembly 5 and is electrically connected to the center conductor assembly 11 through the center pin set 6 .

As shown in Figures 1 and 2, an insert sleeve 2 is clamped between the nut assembly 4 and the housing assembly 5, and the insert sleeve 2 includes a coaxial integrally formed tube part 21 and a ring part 22, and the tube part 21 penetrates into the resonant cavity 41, the outer braid 13 and the outer sheath 14 at the front end of the cable assembly 1 are pulled apart and turned outward, the tube part 21 is inserted between the inner braid 12 and the outer braid 13, and the ring part 22 and the front end of the nut assembly 4 connect the outer braid Layer 13 and outer sheath 14 are clamped in an everted portion. During assembly, the inner side of the shell assembly 5 will give the clamping force to the rear of the insert sleeve 2, so that the ring part 22 can clamp and fix the front end of the cable assembly 1 with the nut assembly 4 to avoid loosening, and this assembly method is simple , The connection is reliable and can be realized without professional tools.

As shown in FIG. 1 , an insulating washer 8 through which the central conductor assembly 11 passes is sandwiched between the housing assembly 5 and the ring portion 22 . Because the shell assembly 5 and the insert sleeve 2 cannot guarantee coaxiality, without the insulating gasket 8 , the center of the shell assembly 5 and the ring portion 22 may be offset, which is not conducive to the radio frequency performance.

As shown in Figures 1 to 3, the outer side of the tube portion 21 is a conical surface that shrinks backwards, and the resonant cavity 41 is also accommodated with a sleeve 3, which is placed on the outer side of the outer sheath 14 of the cable assembly 1, and the sleeve 3 The inner side has a taper to fit the tube part 21. If the rear section of the pipe portion 21 presents a very thick ring surface, it is easy to pinch off the outer braid 13 and outer sheath 14 of the cable assembly 1 during installation, which will affect the fixing effect of the cable assembly 1. The surface is for the smooth expansion of the cable and the outer sheath. The tapered surface structure of the pipe part 21 can make the outer braid 13 and the outer sheath 14 turn outward gently and conform to their expansion. Through surface contact, the outer cable sheath and the outer cable shielding layer can be firmly clamped to avoid pinch off problem. The sleeve 3 can cooperate with the structure of the pipe part 21 to hold it tightly from the outside of the cable assembly 1, so that the fixing of the cable assembly 1 is more firm.

As shown in Figure 1, the embedded sleeve 2 is inserted between the inner braiding layer 12 and the outer braiding layer 13 of the cable, the embedded sleeve 2 is in close contact with the inner shielding layer, and at the same time, the embedded sleeve 2 is in close contact with the outer braiding layer 13 through the sleeve 3 , through the threaded connection of the nut component 4 and the shell component 5, a good connection of the electrical properties of the shell and a good electromagnetic shielding effect can be achieved.

As shown in FIG. 3 , the casing 3 has a slot 31 . The slot 31 enables the tightness of the casing 3 to change, and better cooperate with the pipe part 21 to clamp the outer braided layer 13 and the outer sheath 14 of the cable. At the same time, during construction, the cable braided layer and the outer sheath of the cable have The outer diameter may be changed due to irregular superimposition, and the slotting of the casing 3 can just adapt to this change.

As shown in FIG. 1 , a plurality of inner grooves 43 are provided on the inner wall of the cable fixing cavity 42 , and a first sealing ring 43 a for sealing the gap between the nut assembly 4 and the cable assembly 1 is installed in the inner grooves 43 . The first sealing ring 43a can prevent external moisture from entering the connector to corrode metal parts and cause changes in electrical performance. The first sealing ring 43 a can be a two-layer sealing structure, and the purpose is to prevent moisture from penetrating along the cable outer sheath 14 .

As shown in FIG. 1 , an outer groove 45 is provided on the outer wall of the nut assembly 4 , and a second sealing ring 45 a for sealing the gap between the nut assembly 4 and the housing assembly 5 is installed in the outer groove 45 . The second sealing ring 45a can prevent external moisture from entering the connector to corrode metal parts and cause changes in electrical performance.

The central conductor assembly 11 includes a multi-strand core wire (not marked) wrapped by a central conductor sheath (not marked), and the core wire is electrically connected to the central pin 7 . In order to prevent the multi-strand core wire from being unraveled during assembly, it is wrapped with a central conductor sheath, and the surrounding points are riveted. In this way, the center pin 7 and the center conductor assembly 11 can be electrically connected well.

What have been described above are only some embodiments of the present utility model. For those skilled in the art, without departing from the inventive concept of the present utility model, some modifications and improvements can be made, and these all belong to the protection scope of the present utility model.

Claims (8)

1. a kind of field fast-assembling hermetically sealed connector, including coaxially connected cable assembly, nut assembly, housing unit and center Pin, the cable assembly include center conductor component, around the interior braiding layer being wrapped in outside cable center conductor, be wrapped in interior braiding layer Outer outer braiding layer and the oversheath being wrapped in outside outer braiding layer, the nut assembly is axially hollow and to be divided into internal diameter larger for inside Resonator cavity and the less cable lock chamber of internal diameter, the cable assembly penetrates nut assembly, the nut from cable lock chamber Component penetrates the unlimited rear portion of housing unit, and is threadedly coupled, it is characterised in that：Press from both sides between the nut assembly and housing unit Hold embedded set, being embedded in set includes coaxial integrally formed pipe portion and ring portion, and pipe portion penetrates resonance intracavity, the outer volume of cable head end Tissue layer and oversheath are pushed aside and turned up, and in pipe portion insertion between braiding layer and outer braiding layer, ring portion and nut assembly front end will be outer Braiding layer and oversheath turn up part clamping.

2. fast-assembling hermetically sealed connector in field according to claim 1, it is characterised in that：Between the housing unit and ring portion It is clamped with an insulating washer passed through by center conductor component.

3. fast-assembling hermetically sealed connector in field according to claim 1, it is characterised in that：The outside of the pipe portion is in receding The little conical surface.

4. fast-assembling hermetically sealed connector in field according to claim 3, it is characterised in that：The resonance intracavity also contains one Sleeve pipe, sleeve pipe is placed on the outside of cable jacket, and sleeve pipe inner side has the taper for adapting to pipe portion.

5. fast-assembling hermetically sealed connector in field according to claim 4, it is characterised in that：There is fluting in described sleeve pipe.

6. fast-assembling hermetically sealed connector in field according to claim 1, it is characterised in that：On the inwall of the cable lock chamber Some inner groovies are provided with, the first sealing ring for will seal between nut assembly and cable is installed in inner groovy.

7. fast-assembling hermetically sealed connector in field according to claim 1, it is characterised in that：Set on the outer wall of the nut assembly There is external groove, be provided with external groove for by nut assembly and gap sealed second sealing ring of housing unit.

8. fast-assembling hermetically sealed connector in field according to claim 1, it is characterised in that：During the center conductor component is included Heart conductor jacket and the multiply heart yearn wrapped up by center conductor sheath, the heart yearn is electrically connected with center pin.