CN2678204Y - Connector for coaxial cable - Google Patents

Abstract

A coaxial cable connector, wherein the coaxial cable used as the object is a ring shape, and has a center conductor, an insulator, at least one braided conductive layer and an outer skin; part of the central conductor is exposed at the end of the coaxial cable, the connector comprises a connector body with a shaft ring, a cylindrical piece and the shaft ring form concentric surrounding, and the middle part is annular hollow; a compression sleeve pressed around the outer wall of the end of the collar by a predetermined distance, and an annular seal disposed between the collar and the compression sleeve and having an annular rib portion which engages the outer surface of the outer jacket when the coaxial cable is fully inserted into the connector. The coaxial cable connector can tightly combine the connector body and the coaxial cable together, thereby preventing the influence of moisture invasion and the erosion of rainwater and protecting the mechanical connection between parts.

Description

Connector for coaxial cable

technical field

The utility model mainly relates to a connector for coaxial cables.

Background technique

At present, typical coaxial cable connectors, such as F-type coaxial cable connectors, are screwed to the auxiliary interface connector so that the coaxial cable and various electronic devices (such as TV, CB and FM radio and amateur radio systems, etc.) Electrically become one.

Known coaxial cable connectors have some disadvantages. The main function of the connector is to ensure a good combination between the coaxial braided conductive layer and the connector body for the transmission of electrical signals. A problem with the known art of connectors is the ingress of moisture in the connector body, ie between the connector body and the coaxial cable. As shown in Figure 1, the F-series connector, the F-type connector 10 includes a connector body 11, which includes a shaft ring 12, a cylindrical member 13 is coaxially arranged inside the shaft ring, and a nut 14 is arranged on the inside of the shaft ring. Around the cylindrical member 13.

As shown in FIG. 2 , the connector 10 is inserted into the terminal 15 of the connector body 11 at its free end, so that the insulator and center conductor of the coaxial cable 16 are located in the cylindrical member 13 and combined with the coaxial cable 16 . The braided conductive layer and sheath of the coaxial cable are disposed between the cylindrical member 13 and the collar 12 . A compressive force may be applied to the terminal end of collar 12 to bond to the cable sheath using a hexagonal crimping tool.

The combination of the coaxial cable and the FJS series connectors is accomplished using a hexagonal crimping tool, but this hexagonal crimping tool fails to apply a uniform compressive force to the outer surface of the shaft ring 12, and instead makes the hexagonal crimping tool in the coaxial Some uncompressed or partially compressed areas are left between the sheath of the cable 16 and the collar 12 . These areas become possible places for moisture intrusion, for example as arrow 17 , between the sheath of the coaxial cable 16 and the inner surface of the collar 12 . Intruding moisture may contact the braided conductive layer, thereby degrading the signal transmission performance of the connector.

Utility model content

The main purpose of the utility model is to provide a coaxial cable connector, which can tightly combine the connector body and the coaxial cable, so as to prevent the influence of moisture intrusion and the erosion of rainwater, and protect the space between parts. mechanical connection.

In order to achieve the above object, the solution proposed by the utility model is: a coaxial cable connector, wherein the coaxial cable used as its object is a ring shape, has a central conductor, an insulator, and at least one braided conductive connector. layer and a sheath; part of the central conductor is exposed at the end of the coaxial cable, the connector includes a connector body with a shaft ring, a cylindrical member and the shaft ring form a concentric circle, and the middle is an annular hollow; a compression sleeve press-fitted at a predetermined distance around the outer wall at the end of the collar, further comprising an annular seal disposed between the collar and the compression sleeve, having an annular rib that, when coaxial With the cable fully inserted into the connector, the rib engages the outer surface of the sheath.

Description of drawings

Figure 1 is a schematic cross-sectional view of a known connector;

Fig. 2 is a three-dimensional schematic diagram of a known connector combined with a coaxial cable;

Fig. 3 and Fig. 4 are partial and whole cross-sectional schematic diagrams of the connector of the present invention;

Figure 5 is a schematic cross-sectional view of an annular compression sleeve;

Fig. 6 is a schematic cross-sectional view of an annular seal;

7 and 8 are schematic diagrams illustrating the steps of installing the connector on the coaxial cable.

illustration

10 Connector 11 Connector body

12 Shaft ring 13 Cylindrical piece

14 Nut 15 Terminal

16 coaxial cable 20 connector

21 Connector body 22 Shaft ring

23 Cylindrical piece 24 Annular hollow

25 Nut 26 Flange

27 Outer flange 28 Terminal part

29 End face 30 Compression sleeve

31 Tubular end 32 Inner flange end

33 Drilling 34 Slope

35 Drilling 40 Sealing

41 front end 42 rear end

43 Rib 44 Annular Hollow

50 coaxial cable 51 center conductor

52 Insulator 53 Braided conductive layer

54 skin

Detailed ways

As shown in Figure 7, a traditional coaxial cable 50 is made of central conductor 51, insulator 52, braided conductive layer 53 and sheath 54, in order to make the coaxial cable effectively connected with the receiver and terminal, central conductor 51 and The length of the end portion of the insulator 52 must be cut and exposed to the outside, and the braided conductive layer 53 is stripped outward for a certain length from the insulator 52 and covered on the sheath 54 .

As shown in FIGS. 3 and 4 , the connector 20 includes a connector body 21 and an annular seal 40 . The connector body 21 has an annular shaft ring 22, a cylindrical member 23 forms a concentric surrounding relationship with the shaft ring 22, and the middle is an annular hollow 24, and a rotatable annular nut 25 is arranged on the front of the connector 20, The end of the nut 25 is an inwardly embedded flange 26, which is sandwiched between the outer flange 27 of the cylindrical member 23 and the shaft ring 22, and can freely rotate between the cylindrical member 23 and the shaft ring 22 , and an annular compression sleeve 30 is pressed into the terminal portion 28 of the collar 22 at a predetermined distance.

As shown in FIG. 5 , the sleeve 30 has a tubular end 31 and an inner flanged end 32 . The tubular portion 31 defines a bore 33 whose diameter is sized to receive the collar 22 . The borehole 33 ends internally with a ramp 34 . The inner flange end 32 defines a bore 35 whose diameter is sized to receive the free end of a coaxial cable.

As shown in FIG. 6 , the seal 40 is formed of synthetic plastic or synthetic rubber or elastic material such as neoprene, and has a front end 41, a rear 42, and an inwardly recessed annular rib Section 43. The outer surfaces of the front and rear ends 41 , 42 are arranged in a positive bond around the bore 33 of the tubular end 31 and the rear end 42 abuts the ramp 34 of the sleeve 30 . The annular rib 43 is located between the front and rear ends 41 , 42 and forms a concentric surrounding relationship with the end of the cylindrical member 23 , with an annular hollow 44 in the middle.

The step of combining the connector with the coaxial cable as shown in Fig. 7 and Fig. 8 . The first step is to insert the terminal of the compression sleeve 30 of the connector 20 into the free end of the coaxial cable 50, so that the central conductor 51 and the insulator 52 of the coaxial cable extend into the cylindrical member 23, and the braided conductive layer 53 and The sheath 54 extends between the cylindrical member 23 and the collar 22 , so that the coaxial cable 50 is fully inserted into the connector, and the annular rib 43 engages with the outer surface of the sheath 54 . The second step applies an insertion force on the sleeve 30 to push the sleeve 30 out of the collar 22 of the connector body 21 . Applying the insertion force can be done with a squeeze tool.

When the compression sleeve 30 is pushed into the shaft ring 22, during the push-in, the front and rear ends 41, 42 of the annular seal 40 are subjected to an axial force between the end face 29 of the shaft ring 22 and the top end of the slope 34 of the sleeve 30. Squeeze, so that the rear end 42 moves toward the front end 41 in the axial direction, the axial movement between the front and rear ends 41, 42 will force the diameter of the annular rib 43 to decrease, so the annular rib 43 with reduced diameter is Forced and direct tight bond with the elastic material of the skin 54 .

In a word, using the pushing force between the shaft ring 22 and the sleeve 30, the annular seal 40 located between the shaft ring 22 and the sleeve 30 is squeezed to urge the annular rib 43 to make its diameter smaller, and directly and the sheath 54 of the coaxial cable 50 are closely combined to achieve tight 360-degree annular sealing and clamping by pulling force.

To sum up, this coaxial cable connector can tightly combine the connector body and the coaxial cable, thereby preventing the influence of moisture intrusion and rain erosion, and protecting the mechanical connection between parts.

Claims (3)

1. A connector for a coaxial cable, wherein the coaxial cable (50) as its object of use is an annular shape, has a central conductor (51), an insulator (52), and at least one braided conductive layer (53 ) and a sheath (54); part of the central conductor (51) is exposed at the end of the coaxial cable (50), the connector (10) includes a connector body (11) with a collar (12), a column Shaped part (13) forms concentric circle with this collar (22), and the center is annular hollow (24); A compression sleeve (30) is pressed into around the outer wall of this collar (22) end with a predetermined distance ), characterized in that it also includes an annular seal (40) disposed between the collar (22) and the compression sleeve (30), which has an annular rib (43), when the coaxial cable ( 50 ) is fully inserted into the connector ( 10 ), the rib ( 43 ) engages the outer surface of the sheath ( 54 ). 2. The coaxial cable connector according to claim 1, characterized in that the compression sleeve (30) has a tubular end (31) and an inner flange end (32), the The tubular end (31) is provided with a borehole (33) around which an annular seal (40) can be attached. 3. The coaxial cable connector according to claim 1, characterized in that: the annular seal (40) has a front end (41) and a rear end (42), and the rib (43) Located between the front and rear ends (41), (42).

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