CN201084847Y - Connector for coaxial cable - Google Patents

Abstract

The utility model relates to a connector for a coaxial cable, belonging to the electromechanical category. It includes a coupling shell, the interior of which is divided into a first and a second accommodating chamber by an inner shoulder portion; a grounding connection tube, having a tube body and a protruding ring body on the outer periphery of one end of the tube body; a fixing ring, tightly fitted in the second accommodating chamber of the coupling shell; an insulating sleeve, sleeved inside the tube body of the grounding connection tube; a terminal, sleeved inside the insulating sleeve; a plastic sleeve, having a sleeve portion and a protruding mouth portion; and a retainer, having a protruding tube and an outer protruding ring. The advantages are: simple operation, and avoiding damage to the mesh braided wire caused by riveting operations; saving time and materials, can be assembled quickly, and is suitable for automatic assembly; low cost and strong practicality.

Description

Connector for coaxial cable

technical field

The utility model relates to electromechanical products, in particular to a connector for coaxial cables.

Background technique

As we all know, as far as the wires of electrical products are concerned, the most traditional one is single-core wire, but it has noise and slow transmission speed; for this reason, a coaxial cable appears to overcome the shortcomings of traditional single-core wire; as attached As shown in Fig. 1 and accompanying drawing 2, a general coaxial cable 10 has a core wire 11, an insulating layer 12, a mesh braided wire 13 and an insulating skin 14 in sequence from its inner layer to its outer layer;

The connector is provided as a joint between the coaxial cable and other coaxial cables or other objects; when the coaxial cable is connected to the connector, except for the core wire 11 of the coaxial cable 10, it must be connected with the coaxial cable contained in the connector. In addition to the internal terminal connection, the mesh braided wire 13 of the coaxial cable must also be grounded with the connector;

In the past, the implementation of connectors for coaxial cables, as shown in accompanying drawings 1 and 2, wherein a common connector 20 includes a joint housing 21, a ground connection cylinder 22, a friction ring 23, a fixed ring 24. An insulating sleeve 25, a terminal 26, and a riveted pipe 27; wherein, the inner wall of the joint housing 21 has an inner shoulder 211; the grounding connection cylinder 22 has a barrel 221, and the outer periphery of the rear end forms an outer protrusion The shoulder 222 forms a small-diameter protruding tube 223 at the front end; the ground connection cylinder 22 is accommodated inside the joint housing 21 from the front end direction, and the outer shoulder 222 straddles the inner shoulder 211 of the joint housing 21, And a part of the cylindrical part 221 of the ground connection cylinder 22 and the protruding tube 223 protrude outside the joint housing 21; the friction ring 23 and the fixed ring 24 cover the outer circumference of the ground connection cylinder 22 cylinder part 221 from the front end direction, and are accommodated in the joint. The inside of the housing 21; the front end of the fixed ring 24 has an inner flange 241, and the friction ring 23 is interposed between the inner flange 241 and the outer shoulder 222. The friction ring 23 is made of plastic, and provides the ground connection cylinder 22 and the joint shell The friction positioning ability between the bodies 21; the insulating sleeve 25 is accommodated inside the cylinder body 221 of the ground connection cylinder 22 from the rear end direction; the terminal 26 is accommodated inside the insulating sleeve 25, and the insulating sleeve 25 provides the terminal 26 with the Insulation between the ground connection cylinders 22; the coaxial cable 10 extends into the joint housing 21 from the front end, and the core wire 11 is joined to the terminal 26, and the mesh braided wire 13 is opened outwards to expand, and the sleeve Cover the outer circumference of the protruding tube 223 of the ground connection cylinder 22, and then cover the riveted tube 27 on the outer circumference of the expanded reticular braided wire 13, and pre-rivet, so that the reticular braided wire is riveted on the ground connection cylinder 22. Protruding tube 223 and grounding;

However, when the above-mentioned commonly used connectors are connected with the coaxial cable, there are many obvious shortcomings as follows: First, when performing the grounding operation of the coaxial cable 10 mesh braided wire 13, many fine mesh braided wires must be grounded. 13 expand outward one by one and cover neatly on the outer periphery of the protruding pipe 223 of the ground connection cylinder 22. This processing operation is completely dependent on manual work, which is extremely inconvenient and cannot be automated; 13 is riveted to the outer periphery of the protruding tube 223, and its operation is also very troublesome; the 3rd, in the riveting process, because of the uneven stress of each part of the mesh braided wire 13, there is a concern of poor contact or disconnection; the 4th is to maintain For a good contact and riveting effect, usually a longer length of the braided mesh wire 13 is reserved, and it is flattened and turned outwards. However, after riveting, the end of the braided mesh wire 13 that is too long will protrude from the outside, resulting in a high-quality appearance. The fifth is to carry out the valgus operation of the reticular braided thread 13 manually, and it is very easy to turn over all the reticulated braided threads due to human negligence, but leave some oblique lines inside, resulting in "residual threads" phenomenon, causing adverse effects on contact such as short circuit; Sixth, the grounding connection cylinder 22 and the riveted pipe 27 are all made of solid bar materials. In addition to the time-consuming processing, processing waste will also be generated due to cutting, and the accuracy will be reduced. Changes due to tool wear are time-consuming and material-intensive, and cannot be mass-produced; Seventh, each component cannot maintain the same assembly direction, which is troublesome and time-consuming to assemble; Eighth, the joint shell is integrally formed with expensive copper alloy materials, not only the material The cost is high, and because of its small size, it cannot be treated with various colors of baking varnish. It can only be treated by electroplating black chrome that is easy to scratch and does not meet environmental protection requirements. The quality is not good; it needs to be improved.

Utility model content

The purpose of this utility model is to provide a connector for coaxial cables, which solves the troublesome operation of common connectors when connecting with coaxial cables, the inability to automate production, easy contact failure or disconnection, and the appearance quality is affected , cannot be produced in large quantities, the assembly is troublesome, time-consuming and costly, and does not meet environmental protection requirements.

The technical scheme of the utility model is: the coaxial cable has a core wire, an insulating layer, a mesh braided wire and an insulating skin in sequence from the inner layer to the outer layer, and the connector is used to connect the coaxial cable and a terminal. Including:

A joint shell is a cylindrical shell, the inner wall of which has an inner shoulder, and the interior of the joint shell is divided into a first accommodation chamber and a second accommodation chamber by the inner shoulder. The inner wall of the chamber is provided with internal threads;

A ground connection pipe, which has a pipe body and a protruding ring body on the outer periphery of one end of the pipe body, the ground connection pipe is accommodated in the first storage chamber and the second storage chamber, and the protruding ring body straddles the inside a protruding shoulder, a part of the pipe protrudes outside the joining shell to form a protruding portion;

A fixing ring, which is tightly fitted in the second accommodation chamber of the joint housing, covers the outer circumference of the pipe body of the ground connection pipe, and straddles the protruding ring body;

An insulating sleeve, placed inside the pipe body of the ground connection pipe;

A terminal is placed inside the insulating sleeve, and the terminal is connected to the core wire of the coaxial cable;

A plastic sleeve, which has a sleeve portion and a protruding mouth portion at one end of the sleeve portion, the sleeve portion is tightly fitted to the outer periphery of the joint housing, and the protruding mouth portion is frictionally sleeved on the outer periphery of the protruding portion of the ground connection pipe ;

and a retainer, which has a protruding tube and an outer protruding ring on the outer periphery of the end of the protruding tube, the protruding tube is assembled in the inside of the protruding part of the ground connection tube, and the inside of the protruding tube is joined to the mesh of the coaxial cable braided wire;

Among them, the outer circumference of the connecting housing is provided with tooth patterns, which match the inner wall of the plastic sleeve; the end of the terminal has a bell mouth; the end of the retainer also has a bell mouth; the sleeve part of the plastic sleeve The outer surface of the retainer is provided with anti-slip lines; the outer surface of the outer protruding ring of the retainer is provided with tooth lines; the utility model connector can also include a first washer, which is sleeved on the outer circumference of the pipe body of the ground connection pipe, and interposed It is placed between the protruding ring body and the inner protruding shoulder; a second washer is sheathed on the outer circumference of the pipe body of the ground connection pipe and interposed between the protruding ring body and the fixed ring.

The utility model has the advantages that: the mesh braided wire of the coaxial cable is directly inserted into the inside of the convex tube of the retainer, thereby avoiding the work of manually turning the mesh braided wire outward one by one, and completely avoiding The "residual wire" caused by incompleteness; the riveting operation is exempted, and the damage to the mesh braided wire caused by the riveting operation is avoided; the grounding connection pipe and the retainer are both in the form of a pipe body, which can be processed by pipe instead of Solid bars are machined one by one, saving time and materials; the assembly direction of each component is consistent, can be quickly assembled, and is suitable for automatic assembly; the plastic sleeve covers the outer periphery of the joint shell, which can save expensive copper joints The material used for the housing saves costs; the plastic sleeve can be painted in various colors to increase the variety of changes in the appearance of the connector, the operation is simple, the cost is low, and the practicability is strong.

Description of drawings:

Figure 1 is a three-dimensional exploded schematic diagram of a commonly used connector;

Fig. 2 is a combined three-dimensional cross-sectional schematic diagram of a commonly used connector;

Fig. 3 is the three-dimensional exploded schematic view of the utility model;

Fig. 4 is the combined three-dimensional cross-sectional schematic view of the utility model;

Fig. 5 is another three-dimensional exploded schematic diagram of the utility model;

Fig. 6 is another combined three-dimensional cross-sectional schematic view of the utility model;

Fig. 7 is a schematic diagram of a usage example of the present utility model.

Detailed ways:

As shown in accompanying drawing 3 and accompanying drawing 4, the utility model connector 30 mainly comprises a joint housing 31, a ground connection pipe 32, a fixed ring 33, an insulating sleeve 34, a terminal 35, a plastic sleeve 36 and a retainer 37; wherein, the joint shell 31 is a cylindrical shell, and its inner wall has an inner shoulder 311, and the inside of the joint shell 31 is separated into the first accommodating body by the inner shoulder 311. A chamber 312 and a second accommodation chamber 313, the inner wall of the first accommodation chamber is provided with an internal thread 314 to be screwed to other objects, such as a fixing seat;

The ground connection pipe 32 has a pipe body 321 and a protruding ring body 322. The protruding ring body 322 is formed on the outer periphery of one end of the pipe body 321. The ground connection pipe 32 is accommodated in the first accommodating chamber 312 of the ground housing 31. and the second accommodating chamber 313, and the protruding ring body 322 straddles the inner shoulder portion 311, and a part of the tube body 321 protrudes outside the joint housing 31 to form a protruding portion 323;

The fixing ring 33 is closely fitted to the second accommodating chamber 313 of the joint housing 31, and covers the outer circumference of the pipe body 321 of the grounding connection pipe 32, and straddles the protruding ring body 322; the fixing ring 33 is used to fix the grounding The position of the connecting pipe 32 inside the junction housing 31;

The insulating sleeve 34 is placed inside the pipe body 321 of the grounding connection pipe 32; the terminal 35 is placed inside the insulating sleeve 34, that is, the insulating sleeve 34 is used to maintain the insulation between the terminal 35 and the grounding connection pipe 32 ;

The plastic sleeve 36 has a sleeve portion 361 and a mouth portion 362 at one end of the sleeve portion. The sleeve portion 361 is tightly fitted to the outer periphery of the joint housing 31 . The mouth body 362 is frictionally sleeved on the ground connection pipe 32 The outer periphery of the protruding portion 323; in the embodiment, the outer periphery of the joint housing 31 is provided with tooth lines 315, and the inner wall of the plastic sleeve 36 can interfere with the joint housing 31 through these tooth lines;

The surface of the sleeve part 361 of the plastic sleeve 36 is provided with anti-slip lines 363, which can facilitate the rotation operation of the plastic sleeve 36, and when the plastic sleeve 36 rotates, it can simultaneously drive the joint housing 31 with its internal thread 314 screw. Connected to other joint objects;

The retainer 37 has a protruding tube 371 and an outer protruding ring 372, the protruding ring 372 is formed on the outer periphery of the end of the protruding tube 371, and the protruding tube 371 is assembled inside the protruding part 323 of the ground connection tube 32;

The outer surface of the outer protruding ring 372 of the retainer 37 is provided with a tooth pattern 373 for tight fit. In assembly and use, the tooth pattern 373 can be tightly matched with a joint object, such as the plastic rotating shaft 40 of the antenna seat, as shown in Figure 7 Show; when the plastic rotating shaft 40 rotates, the retainer 37 and the ground connection pipe 32 will rotate accordingly. The mouth 362 can also fill the gap between the plastic rotating shaft 40 and the ground connection pipe 32 to make the combination more stable and avoid wobbling;

The core wire 11 and the mesh braided wire 13 of the coaxial cable 10 are respectively bonded to the terminal 35 and the convex tube 371 of the retainer 37; the mesh braided wire 13 is grounded through the convex tube 371 and the ground connection tube 32; The ends of the device 37 are respectively provided with bell mouths 351 and 374, so as to utilize the introduction of the core wire 11 and the mesh braided wire 13 of the coaxial cable 10.

As shown in accompanying drawings 5 and 6, a first washer 38 and a second washer 39 are sheathed on the outer circumference of the pipe body 321 of the ground connection pipe 32; between the body 322 and the inner shoulder 311 of the joint housing 31; the second washer 39 is interposed between the ring body 322 and the fixed ring 33; The first washer 38 and the second washer 39 reduce the frictional resistance between the joint housing 31 and the fixing ring 33 to make the rotation more smooth.

Claims (7)

1. A connector for a coaxial cable, characterized in that: the connector includes: A joint shell is a cylindrical shell, the inner wall of which has an inner shoulder, and the interior of the joint shell is divided into a first accommodation chamber and a second accommodation chamber by the inner shoulder. The inner wall of the chamber is provided with internal threads; A ground connection pipe, which has a pipe body and a protruding ring body on the outer periphery of one end of the pipe body, the ground connection pipe is accommodated in the first storage chamber and the second storage chamber, and the protruding ring body straddles the inside a protruding shoulder, a part of the pipe protrudes outside the joining shell to form a protruding portion; A fixing ring, which is tightly fitted in the second accommodation chamber of the joint housing, covers the outer circumference of the pipe body of the ground connection pipe, and straddles the protruding ring body; An insulating sleeve, placed inside the pipe body of the ground connection pipe; A terminal is placed inside the insulating sleeve, and the terminal is connected to the core wire of the coaxial cable; A plastic sleeve, which has a sleeve portion and a protruding mouth portion at one end of the sleeve portion, the sleeve portion is tightly fitted to the outer periphery of the joint housing, and the protruding mouth portion is frictionally sleeved on the outer periphery of the protruding portion of the ground connection pipe ; and a retainer, which has a protruding tube and an outer protruding ring on the outer periphery of the end of the protruding tube, the protruding tube is assembled in the inside of the protruding part of the ground connection tube, and the inside of the protruding tube is joined to the mesh of the coaxial cable braided wire. 2. The coaxial cable connector according to claim 1, characterized in that: the outer periphery of the joint housing is provided with teeth, and the teeth are matched with the inner wall of the plastic sleeve. 3. The coaxial cable connector according to claim 1, wherein the end of the terminal is provided with a bell mouth. 4. The coaxial cable connector according to claim 1, characterized in that: the end of the holder is provided with a bell mouth. 5. The connector of coaxial cable according to claim 1, characterized in that: The outer surface of the sleeve portion of the plastic sleeve is provided with anti-slip lines. 6. The coaxial cable connector according to claim 1, wherein the outer surface of the protruding ring of the retainer is provided with teeth. 7. The connector for coaxial cable according to any one of claims 1 to 6, characterized in that: the connector includes a first washer, which is sheathed on the outer circumference of the tube body of the ground connection tube, and interposed Between the protruding ring body and the inner protruding shoulder; a second washer is sheathed on the outer circumference of the pipe body of the ground connection pipe and interposed between the protruding ring body and the fixed ring.

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