CN101257152A

CN101257152A - Mechanism for loading and jointing coaxial cable for RF coaxial connector

Info

Publication number: CN101257152A
Application number: CNA2007100378049A
Authority: CN
Inventors: 寿祖刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-02
Filing date: 2007-03-02
Publication date: 2008-09-03

Abstract

The invention discloses a mechanism for a RF coaxial connector assembling with a coaxial cable which has characteristics in that: a metal bush is inserted into metal braid ply of the coaxial cable when assembling cable; the cable jacket is inserted into plastic shell of a connector. Plastic shell exterior of the connector has a metal shell. Metal shell of the mechanism takes clamping movement to one location position along cable insertable direction by using a tool or device after cable is inserted into the mechanism. In the movement process, plastic shell dislocates and overlaps each other, and inner diameter of plastic shell is reduced, thereby, cable is clamped tightly and sealed.

Description

A kind of mechanism of loading and jointing coaxial cable for RF coaxial connector

Technical field:

The present invention relates generally to the radio frequency (RF) coaxial connector that needs the assembly of radio frequency coaxial cable, refers in detail to the radio frequency (RF) coaxial connector that assembling has the wire sheathing cable.

Background technology:

In modern communication networks, need a large amount of radio frequency coaxial-cables to come transmission signals.In using, these need coaxial connector cable to be connected on various device, the instrument, such as antenna, signal emitting and receiving equipment and various radio-frequency signal processing devices etc.At the end that connector is connected with equipment, instrument, various series are arranged by normalized interface port, as SMA series, N type series, TNC series etc.

For an end of connector attaching coaxial cable, the mechanism of traditional attaching cable is that enclosure has lining, circulus parts such as wire clamp with a pair of threaded shell.During the attaching coaxial cable with order such as a threaded shell and wire clamp through on the cable.On the tail end of wire clamp grooving is arranged, its effect is that wire clamp grooving place can be out of shape and dwindles when being subjected to vertically pushing.The wire sheathing of cable is dug, propped up braid with lining.Then with wire clamp, in the middle of lining is clamped in a pair of threaded shell locking, at threaded shell and contact site, wire clamp grooving place one inclined-plane is arranged, the effect on inclined-plane is in the process that screw-threaded coupling clamps, the inclined-plane dwindles the wire clamp distortion for radial component of wire clamp, thereby has clamped the cable in the wire clamp.Lining with the braid jam-packed of cable, provides further to cable to be fixedly clamped after screw thread clamps.Lining and wire clamp are basic version, and concrete mutation can be that enclosure has parts such as rubber washer and metal washer, and with according to different cables, different service conditions is determined corresponding cable clamping force and sealability.

The problem that traditional coaxial cable attachment mechanism has is that part is many and complicated, and the attaching cable is slow, and good sealing can not be provided.Under the little situation of use amount, can stand sometimes, but the communication network develop rapidly now, these problems just need solve.

So need a kind of mechanism of connector attaching coaxial cable, this mechanism element need be tried one's best simple and the attaching cable is reliable rapidly convenient, and can reach good sealing.

Summary of the invention:

The object of the invention provides a kind of mechanism of loading and jointing coaxial cable for RF coaxial connector.

Though the mechanism of the attaching coaxial cable that the present invention is illustrated can use separately, but in most cases all be to be attached on the coaxial connector of certain specific series specification, the version of this mechanism and an opposite end of cable attaching can have different because of the connector of specific series specification, therefore at an end of this this mechanism of explanation and cable attaching.

The mechanism of a kind of loading and jointing coaxial cable for RF coaxial connector that the present invention will illustrate comprise one can axial motion metal shell, plastic casing is housed in the metal shell.One metal lining is arranged in the plastic casing.

As preceding telling bright metal shell, plastic casing, metal lining are similar drum shape.The metal shell bag is attached on the plastic casing, and metal shell is not come off before the attaching cable.At the metal shell afterbody, a step that extends to the axle center is arranged, this step is in attaching cable process, can drive the plastic casing end that props up mutually with step during the oppressed axial motion of metal shell and move together.Plastic casing has an axial slope feature on a certain radial section, this bevel feature helps this mechanism when metal shell is forced to axial motion, and it is overlapping that plastic casing is subjected to the part of axial compression at these two ends, cross section to begin inside and outside mutually dislocation at section.Be in one section inner plastic casing after overlapping and be compressed distortion, make its internal diameter diminish, thereby cable is compressed and is fixedly clamped.Because the plastic casing of clamping cables part is with the cable contact surface is smooth and plastics have certain flexibility, the cable that the makes clamped back while is also by good sealing.Metal lining tail end outer surface in this structure has a circular arc chamfering, and purpose is to make when inserting in the cable braid to reduce resistance.For cable can better be fixed, have at the outer surface and the cable of lining to compress the position that contacts and can design overhead kick, annular knurls etc. are to increase frictional force.

The attaching that the present invention can help the user to finish connector and cable with the less time clamps, and because the good water-tight performance of this attachment mechanism, the user can not need to seal with extra means.

For a better understanding of the present invention, please referring to below in conjunction with the describing of accompanying drawing, scope of the present invention is pointed out in appending claims.

Description of drawings:

For mechanism of the present invention is described preferably, in description of drawings, adopted plug that mechanism of the present invention is attached to TNC series connector to illustrate as the example of a coaxial cable connector.

Fig. 1 is the axle survey schematic diagram that mechanism of the present invention assembles cable

Fig. 2 is the end view after coaxial cable with braid strips

Schematic partial cross-sectional view when Fig. 3 is the mechanism of the present invention unassembled cable along section A-A shown in Figure 1

Fig. 4 is the schematic partial cross-sectional view along section A-A shown in Figure 1

Embodiment

Adopt mechanism of the present invention to assemble coaxial cable 9 back schematic diagrames referring to coaxial cable connector shown in Figure 1, wherein nut 1 be this coaxial cable connector and equipment, the end that instrument connects, nut 1 can rotate utilizing on the diagram connector and be screwed at equipment end.Metal shell 2 tightly depends within it the plastic casing 3, is not coming off under normal behaviour in service.Cable 9 tightly is clamped in the mechanism 13 of the present invention.

For a better understanding of the present invention, the structure of the coaxial cable 9 that at first the present invention once is described and is suitable for.

The cable that the illustrated mechanism of the present invention is suitable for is coaxial cable such as the Fig. 2 that has braid.The structure of this cable is, innermost layer is a metallic conductor, and we are referred to as inner wire 5.The one deck that is positioned at cable inner conductor 5 outsides is an insulating medium layer, and we are referred to as the insulator 6 of cable.Cable insulation 6 outsides are outer conductor.Outer conductor can be one deck aluminium foil outside with wire sheathing 7, perhaps do not have aluminium foil and directly be wire sheathing 7.Wire sheathing 7 outsides are plastic peels of cable, and we are referred to as sheath 8.Above which floor structure of chatting is concentric structure, so be called coaxial cable.

Before with mechanism of the present invention assembling cable, earlier cable is shelled shape as shown in Figure 2.In stripping cable process, respectively expose 5, one sections insulators 6 of one section cable inner conductor (, can expose one section insulator 6 that has aluminium foil) if cable insulation 6 is outer with aluminium foil, peel off one section cable cover(ing) 8, expose the wire sheathing 7 of one section cable.Then the wire sheathing 7 of cable is translated on the sheath 8 of cable.This moment, cable can insert in the mechanism 13 of connector attaching cable of the present invention as shown in Figure 3.

Sectional view among Fig. 3 has disclosed the internal structure of mechanism of the present invention.Metal shell 2 tightly depends within it the plastic casing 3.Metal shell 2 is a cylinder-like structure, and tail end has an inside step 12.Plastic casing 3 in it also is a cylinder-like structure.On the plastic casing 3 fixing metal linings 4 within it, garden ring projection step 10 is arranged on metal lining 4.The effect of this step 10 is to block plastic casing 3 to make the plastic casing 3 can not be to there being cable one end to move.Plastic casing 3 has a bevel feature 11.The purposes of this bevel feature 11 will illustrate below.

Ready cable 9 is inserted in the shown attachment mechanism 13 of Fig. 3 the contact pin of solder connector (not illustrating in the drawings) on demand on the inner wire 5 of cable before insertion.Wherein between the insulator 6 of the braid 7 of metal lining 4 insertion cables and cable, the sheath 8 of cable inserts plastic casings 3 inside.The suitable length that strips out of choosing cable makes cable insert plastic casing 3 to the junction of plastic casing 3 with metal lining 4.The internal diameter size of metal lining 4 is chosen at the insulator 6 that can hold cable just.Space size between the internal diameter of the external diameter of metal lining 4 and plastic casing 3 is chosen at cable and just can inserts into more easily.

After cable inserts in the plastic casing 3, can adopt an instrument or a device compressing metal shell 2, force metal shell 2 to move towards the cable direction of insertion.In metal shell 2 motion processes, plastic casing 3 is subjected to axial compressive force, it is staggered inside and outside the inclined-plane at bevel feature 11 places that are provided, metal shell 2 constantly moves, two parts that plastic casing 3 staggers along bevel feature 11 places overlap each other, the a part of plastic casing 3 that is in overlapping inside is subjected to radial pressure, and the distortion of the internal diameter that makes is dwindled, thereby the cable clip between itself and the metal lining 4 is fastened.This moment, metal shell 2 moved to the position that is positioned.(this position location is an end face 14 of connector nut 1 in the example in this explanation.) as shown in Figure 4, finished the attaching of cable is fixed.

As above chat, we describe the details of the procedure of the enforcement of this patent, be understandable that, the present invention is not limited to the execution mode of these details, those of ordinary skill in the art can make the modification or the change of some details to it, but do not leave core content of the present invention.In fact, it is very easy changing some detailed structure that this explanation describes.The present invention's mechanism itself just can make some details at an easy rate and change with the cable of suitable all size and the connector of various series.Therefore, disclosed concrete scope is limited by claims.

Claims

1. the mechanism of a radio frequency (RF) coaxial connector assembling coaxial cable comprises:

One can axial motion metal shell, plastic casing is housed in the metal shell.One metal lining is arranged in the plastic casing.

2. the mechanism of the radio frequency (RF) coaxial connector assembling coaxial cable of chatting as claim 1 is characterized in that, this mechanism is when the assembling coaxial cable, and an available instrument or install compression connector vertically makes metal shell move to a certain position location vertically.

3. the mechanism of the radio frequency (RF) coaxial connector assembling coaxial cable of chatting as claim 1, it is characterized in that there is two states in this mechanism: before (1) assembling cable, cable can insert in the connector.(2) behind the assembling cable, metal shell moves to a certain position vertically, and cable is clamped fixing and sealed.

4. the mechanism of the radio frequency (RF) coaxial connector assembling coaxial cable of chatting as claim 1 is characterized in that metal lining inserts in the mesh grid of coaxial cable during assembling cable, and the oversheath of coaxial cable inserts in the plastic casing of this mechanism.

5. the mechanism of the radio frequency (RF) coaxial connector assembling coaxial cable of chatting as claim 1, it is characterized in that, the plastic casing of this mechanism metal shell in the connector assembling cable is oppressed when moving vertically, and two sections inside and outside mutually dislocation were overlapping before and after this plastic casing was made on its a certain radial section by axial compression.Be in one section inner plastic casing after overlapping and be compressed distortion, make its internal diameter diminish, be compressed and be fixedly clamped thereby insert cable between metal lining and the plastic casing.

6. the mechanism of the radio frequency (RF) coaxial connector assembling coaxial cable of chatting as claim 1, it is characterized in that, plastic casing in this mechanism has an axial slope feature on a certain radial section, it is overlapping that this bevel feature helps this mechanism plastic casing part at these two ends, cross section when clamping cables moves to begin inside and outside mutually dislocation at section.

7. the mechanism of the radio frequency (RF) coaxial connector assembling coaxial cable of chatting as claim 1, this mechanism can be designed to be used on the radio frequency (RF) coaxial connector of various serial different sizes, is used for assembling and the fixing radio frequency coaxial-cable with braid feature of different specification size.The size of this mechanism can change to adapt to the cable of different specification size according to actual conditions.