CN109818304B

CN109818304B - Connection assembly and connection method for coaxial cable and coaxial cable system

Info

Publication number: CN109818304B
Application number: CN201910280275.8A
Authority: CN
Inventors: 詹威鹏; 罗智奕; 周伟才; 陈腾彪; 刘文东
Original assignee: Shenzhen Power Supply Co ltd
Current assignee: Shenzhen Power Supply Co ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-08-04
Anticipated expiration: 2039-04-09
Also published as: CN109818304A

Abstract

The invention relates to a connection component for a coaxial cable, wherein the coaxial cable comprises a first cable and a second cable which are coaxial and arranged at intervals, and the connection component comprises a crimping pipe, a first protection structure, a conductive connecting piece, a fixing piece and a second protection structure. The inner cores of the first cable and the second cable can be coaxially connected together through the crimping pipe, the outer cores are connected together through the conductive connecting piece, and the conductive connecting piece is sleeved on the first protection structure. The outer core of first cable and second cable sets up in the mounting groove in the electrically conductive connecting piece outside, and through mounting and electrically conductive connecting piece fixed connection, compares in traditional twisting inner core and outer core into two bundles respectively, has reduced the bodily form of refuting the department of connecing. The inner core and the outer core are not required to be branched, so that the difficulty of protection treatment is reduced, and the conditions that the joint is low in waterproof performance and easy to cause faults due to improper treatment are avoided. The invention also relates to a connection method for the coaxial cable and a coaxial cable system.

Description

Connection assembly and connection method for coaxial cable and coaxial cable system

Technical Field

The invention relates to the technical field of high-voltage cable maintenance, in particular to a connection assembly and a connection method for a coaxial cable and a coaxial cable system.

Background

The high-voltage cable has a certain service life, and the failure rate of the high-voltage cable is increased along with the increase of the service life. For the coaxial cable, the coaxial cable is led out from the middle joint of the high-voltage cable, and the middle joint of the high-voltage cable is not allowed to be disassembled due to the waterproof sealing, so that when the coaxial cable breaks down, the whole coaxial cable cannot be replaced, only the broken section can be cut off, and a new section of the coaxial cable is refuted. However, the existing new and old coaxial cable connection has high operation requirements, and the connection part is low in waterproof performance due to improper treatment, so that faults are easily caused.

Disclosure of Invention

Therefore, it is necessary to provide a docking assembly for coaxial cable, a docking method and a coaxial cable system, which can effectively reduce the difficulty of operation of coaxial cable docking, aiming at the problems that the existing new and old coaxial cable docking has high operation requirements, the waterproof performance of the docked part is low due to improper treatment, and faults are easily caused.

A docking assembly for a coaxial cable, the coaxial cable including first and second cables laid coaxially and at intervals, the docking assembly comprising:

the compression joint pipe is arranged along the longitudinal direction of the coaxial cable, and two ends of the compression joint pipe are respectively used for allowing the inner core of the first cable and the inner core of the second cable to extend into the compression joint pipe so as to fix the inner cores of the first cable and the second cable relative to the compression joint pipe;

the first protection structure is arranged along the longitudinal direction of the coaxial cable and covers the crimping pipe, and the inner core of the first cable and the inner core of the second cable are positioned outside the crimping pipe;

the conductive connecting piece is sleeved on the first protection structure, a plurality of mounting grooves extending along the longitudinal direction of the crimping pipe are formed in the surface, away from the first protection structure, of one side of the conductive connecting piece, the mounting grooves are distributed at intervals along the circumferential direction of the crimping pipe, and outer cores of the first cable and the second cable are located in the mounting grooves;

the fixing piece is sleeved on the conductive connecting piece and used for fixing the outer cores of the first cable and the second cable in the mounting groove;

and the second protection structure is arranged along the lengthwise direction of the crimping pipe and covers the fixing piece, and the outer core of the first cable and the outer core of the second cable are positioned at the part outside the fixing piece.

Through setting up foretell be used for coaxial cable refute and connect the subassembly, the inner core accessible crimping pipe coaxial coupling of first cable and second cable is in the same place, and the outer core of first cable and second cable passes through the mounting to be fixed in the mounting groove in the electrically conductive connecting piece outside to couple together through electrically conductive connecting piece, and first protective structure is located to electrically conductive connecting piece cover. So, can encircle the outer core of first cable and second cable respectively and set up in the outside of electrically conductive connecting piece for the inner core and the outer core of overlap joint still keep coaxial, compare in traditional twisting inner core and outer core into two bundles respectively, reduced the bodily form of overlap joint effectively. Simultaneously, the inner core is separated through first protective structure with outer core, and outer core passes through the second protective structure with external environment and separates the protection, and the inner core all does not need the branch with outer core, has made things convenient for the protection of joint department to handle, has reduced the degree of difficulty that the protection was handled to avoided leading to the low and easy condition that causes the trouble of joint department waterproof performance because of handling the improper easily.

In one embodiment, the plurality of mounting grooves are uniformly spaced along the circumferential direction of the crimping pipe and are arranged on the outer side of the conductive connecting piece.

In one embodiment, a side surface of the conductive connecting member facing away from the first protective structure has a first region and a second region opposite to each other in a longitudinal direction of the coaxial cable, the mounting grooves include a first mounting groove and a second mounting groove, the first mounting groove is opened in the first region, an outer core of the first cable is located in the first mounting groove, the second mounting groove is opened in the second region, and an outer core of the second cable is located in the second mounting groove.

In one embodiment, the mounting slot extends through the conductive connector in a lengthwise direction of the coaxial cable.

In one embodiment, the length of the conductive connector in the longitudinal direction of the coaxial cable is less than the length of the crimp tube in the longitudinal direction of the coaxial cable.

In one embodiment, the conductive connecting member has a first end and a second end opposite to each other in a circumferential direction of the crimping tube, and the first end and the second end are spaced by a predetermined gap.

In one embodiment, the cross-sectional shape of the conductive connecting member perpendicular to the longitudinal direction of the coaxial cable is preferably arc-shaped.

A docking method for coaxial cables, comprising the steps of:

a first cable or a second cable is arranged in a conductive connecting piece in a penetrating mode, and one end of the first cable or the second cable extends out of the conductive connecting piece;

respectively carrying out open-line processing on the first cable and the second cable so as to expose inner cores of the first cable and the second cable for a preset length;

arranging the inner cores of the first cable and the second cable coaxially, and fixedly connecting the inner cores of the first cable and the second cable through crimping pipes respectively;

forming a first protective structure on the outer side of the crimping pipe;

moving the conductive connection onto the first guard structure;

placing outer cores of the first cable and the second cable in a mounting groove on the outer side of the conductive connecting piece;

sleeving a fixing piece on the conductive connecting piece, and covering the outer cores of the first cable and the second cable;

and forming a second protective structure on the outer side of the fixing piece.

In one embodiment, the predetermined length is 40 mm to 60 mm.

A coaxial cable system comprises a first cable, a second cable and the connection component for the coaxial cable in the embodiment, wherein one end of the connection component is fixedly connected with the first cable, and the other end of the connection component is fixedly connected with the second cable.

Drawings

Fig. 1 is a schematic structural diagram of a docking assembly for coaxial cables according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view at a-a of the docking assembly shown in fig. 1;

fig. 3 is a schematic structural view of a conductive connector of the docking assembly shown in fig. 1;

fig. 4 is a flowchart of a docking method for coaxial cables according to an embodiment of the present invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

In order to facilitate understanding of the technical solution of the present invention, a description is given of problems of the conventional coaxial cable connection method: when the existing coaxial cable fails, an inner core and an outer core of a new cable and an old cable are respectively twisted into a bundle to be connected together, then the two bundles are respectively crimped through two copper crimping pipes, and then insulation tapes, water blocking tapes and PVC tapes are directly wrapped on the surfaces of the two copper crimping pipes. The body shape of the connection part is increased due to the connection, the inner core and the outer core of the cable are twisted together after being branched, branched openings are formed between the inner core and the outer core at two ends of the new coaxial cable and the old coaxial cable, the protection treatment at the branched openings is complex, the treatment requirement is high, and if the treatment is not good, the waterproof performance of the connection part is low, and the fault is easily caused.

As shown in fig. 1, a docking assembly 10 for coaxial cables according to an embodiment of the present invention is used for maintaining coaxial cables. Specifically, the coaxial cable includes a first cable 20 and a second cable 30 coaxially and spaced apart, and the docking assembly 10 for coaxial cable is used for docking between the first cable 20 and the second cable 30.

Referring to fig. 2 and 3, the docking assembly 10 for coaxial cables includes a crimping tube 12, a first shielding structure 14, a conductive connecting member 16, a fixing member 18, and a second shielding structure 19.

The crimping tube 12 is disposed along a longitudinal direction of the coaxial cable, and two ends of the crimping tube 12 are respectively used for the inner core 40 of the first cable 20 and the inner core 40 of the second cable 30 to extend into, so that the inner core 40 of the first cable 20 and the inner core 40 of the second cable 30 are fixed relative to the crimping tube 12. The first shielding structure 14 is disposed along a longitudinal direction of the coaxial cable, and covers the crimp tube 12 and portions of the inner core 40 of the first cable 20 and the inner core 40 of the second cable 30 outside the crimp tube 12.

The conductive connecting member 16 is sleeved on the first protection structure 14, a plurality of mounting grooves 162 extending along the longitudinal direction of the crimping pipe 12 are formed in one side of the conductive connecting member 16 departing from the first protection structure 14, the plurality of mounting grooves 162 are arranged along the circumferential direction of the crimping pipe 12 at intervals, and the outer cores 50 of the first cable 20 and the second cable 30 are located in the mounting grooves 162.

The fixing element 18 is sleeved on the conductive connecting element 16 and is used for fixing the outer cores 50 of the first cable 20 and the second cable 30 in the mounting groove 162, so that the outer cores 50 of the first cable 20 and the second cable 30 are fixed relative to the conductive connecting element 16. The second shielding structure 19 is disposed along a longitudinal direction of the coaxial cable and covers the fixing element 18, and the outer core 50 of the first cable 20 and the outer core 50 of the second cable 30 are located outside the fixing element 18.

By providing the above-mentioned docking assembly for coaxial cables, the inner cores 40 of the first and

second cables

20 and 30 can be coaxially connected together through the crimping pipe 12, the outer cores 50 of the first and

second cables

20 and 30 are fixed in the mounting grooves 162 at the outer side of the conductive connecting member 16 by the fixing members 18 to be connected together through the conductive connecting member 16, and the conductive connecting member 16 is sleeved on the first protective structure 14. Thus, the outer cores 50 of the first cable 20 and the second cable 30 can be respectively disposed outside the conductive connector 16 around the conductive connector 16, so that the inner core 40 and the outer core 50 at the connection position still remain coaxial, and compared with the conventional method in which the inner core 40 and the outer core 50 are respectively twisted into two bundles, the size of the connection position is effectively reduced. Meanwhile, the inner core 40 and the outer core 50 are separated through the first protection structure 14, the outer core 50 and the external environment are separated and protected through the second protection structure 19, the inner core 40 and the outer core 50 do not need to be forked, protection treatment at joints is facilitated, difficulty of protection treatment is reduced, and therefore the situation that water resistance at the joints is low and faults are caused easily due to improper treatment is avoided.

It should be noted that the first cable 20 and the second cable 30 are two-section cables formed after the old cable is cut, and the coaxial cable sequentially includes an inner core 40, an inner insulating layer, an outer core 50, and an outer insulating layer from inside to outside, so that the cable needs to be opened before the inner core 40 is connected to the coaxial cable, so that the inner core 40 is exposed. In practice, the inner core 40 is exposed to a length of 40 mm to 60 mm in the longitudinal direction of the coaxial cable. Preferably, the inner core 40 is exposed to a length of 50 mm in the longitudinal direction of the coaxial cable.

Meanwhile, for the coaxial cable for transmitting high voltage, the number of the inner cores 40 in each coaxial cable may be multiple, so when the inner cores 40 of the first cable 20 and the second cable 30 are connected by using the crimping pipe 12, the corresponding inner cores 40 may be coaxially arranged and then crimped.

Note that, in fig. 1 and 2, the inner core 40 and the outer core 50 are denoted by the same reference numerals as those of the inner core 40 and the outer core 50 of the first cable 20 and the second cable 30, since the first cable 20 and the second cable 30 are formed by cutting a part of the same coaxial cable.

In some embodiments, the crimp tube 12 is a copper tube such that the inner core 40 of the first cable 20 and the inner core 40 of the second cable 30 are electrically connected by the crimp tube 12. Further, the length of the crimping tube 12 in the longitudinal direction of the coaxial cable is smaller than the sum of the exposed lengths of the inner cores 40 of the first cable 20 and the second cable 30, that is, the crimping tube 12 crimps the inner cores 40 of the first cable 20 and the second cable 30, even if the inner cores 40 of the first cable 20 and the second cable 30 abut in the crimping tube 12, only by ensuring that the middle position of the crimping tube 12 is the abutting position of the inner cores 40 of the first cable 20 and the second cable 30, the two ends of the crimping tube 12 do not extend to the inner insulating layer of the first cable 20 or the second cable 30.

In practice, the outer diameter of the crimp tube 12 is smaller than the radial dimension of the inner insulation of the first or

second cable

20, 30. In this way, when the first shielding structure 14 is provided outside the crimp tube 12, an excessively large protrusion is not formed at the crimp tube 12. It should be noted that, since the crimp tube 12 is also conductive and the crimp tube 12 does not cover all the exposed inner cores 40, in order to ensure that all the inner cores 40 and the crimp tube 12 are insulated, both ends of the first protective structure 14 need to extend to the inner insulating layers of the first cable 20 and the second cable 30, that is, the first protective structure 14 covers the portion of the inner core 40 outside the crimp tube 12.

In some embodiments, the first protective structure 14 includes an insulating layer, a waterproof layer, a fireproof layer, and a plastic layer from inside to outside in order to ensure that the crimp tube 12 and the exposed inner core 40 are completely isolated from the outside, i.e., insulated, and the outer environment is prevented from affecting the inner core 40. Further, the insulating layer is an insulating tape, the waterproof layer is a waterproof tape, the fireproof layer is a fireproof tape, the plastic layer is a PVC tape, the insulating tape is laid from the inner insulating layer of the first cable 20 to the inner insulating layer of the second cable 30, and the tape tests of other layers sequentially cover the insulating tape.

In practical application, each layer of adhesive tape is lapped and wrapped by half, taking the insulating adhesive tape as an example of wrapping on the crimping tube 12, the insulating adhesive tape is cut after being wound around the crimping tube 12 for one circle, then the winding is continued on the crimping tube 12, and one side edge of the next circle of insulating adhesive tape is located in the middle of the previous circle of insulating adhesive tape. Thus, one turn extends from the inner insulation of the first cable 20 to the inner insulation of the second cable 30

In some embodiments, the conductive connector 16 has first and second ends opposite to each other in the circumferential direction of the crimp tube 12, and the first and second ends are spaced apart by a predetermined gap. Although the conductive connecting element 16 is sleeved outside the first protective layer, the conductive connecting element 16 completely surrounds the first protective layer, that is, if the first protective layer is annular, the conductive connecting element 16 is not a complete annular structure, but an annular structure with a break. In this way, it is effectively avoided that the conductive connection 16 forms eddy currents after the connection is completed and energized, thereby avoiding energy losses and the risk of high temperatures due to eddy currents. Meanwhile, compared with the original mode that the outer cores 50 of the new and old cables are twisted into one bundle, the contact area is effectively increased, heat is not easy to generate, the high-temperature risk is further reduced, and the reliability is improved.

Further, the predetermined gap is at least greater than 2 mm. Of course, the predetermined gap may be determined by the energizing voltage within the cable, and too small a predetermined gap may still result in eddy current formation in the conductive connection 16. Specifically, the conductive connecting member 16 has a preferably arc-like shape in cross section perpendicular to the longitudinal direction of the coaxial cable. The longitudinal direction of the coaxial cable is the vertical direction shown in fig. 1.

In some embodiments, the outer diameter of conductive connection 16 is smaller than the radial dimension of the outer insulation in first cable 20 (or second cable 30) to ensure that outer core 50 does not change body shape too much after being connected to the outside of conductive connection 16.

In some embodiments, the length of the conductive connector 16 in the lengthwise direction of the coaxial cable is shorter than the length of the crimp tube 12 in the lengthwise direction of the coaxial cable. The conductive connector 16 is used to connect the first cable 20 and the outer core 50 of the second cable 30, and the outer core 50 is fixed to the conductive connector 16 by the fixing member 18, so that the outer core 50 is only required to be lapped on the conductive connector 16, and the length of the conductive connector 16 along the longitudinal direction of the coaxial cable is not required to be too long.

It will also be appreciated that the conductive connector 16 cannot be installed after crimping of the crimp tube 12, but rather, the inner core 40 and the inner insulating layer of the first or

second cable

20, 30 are placed inside the conductive connector 16 before crimping of the inner core 40, and then the inner core 40 is crimped. Since the outer diameter of the conductive connecting member 16 is smaller than the radial dimension of the outer insulating layer, after the inner core 40 is inserted into the conductive connecting member 16, the conductive connecting member 16 can only move between the outer insulating layers of the first cable 20 and the second cable 30, and if the conductive connecting member 16 is too long, one end of the conductive connecting member 16 may abut against the outer insulating layer of the first cable 20 (or the second cable 30) and the other end may extend to the wrapping area of the first protective layer, which may affect the formation of the first protective layer.

Further, the length of the conductive connector 16 in the longitudinal direction of the coaxial cable is at least half of the length of the crimp tube 12 in the longitudinal direction of the coaxial cable. Of course, the length of the conductive connection member 16 should not be too short, which may cause the outer core 50 to be connected to the outer side surface of the conductive connection member 16 in an insufficient length, which may result in the loose connection of the outer core 50 to the conductive connection member 16. Of course, the outer side surface of the electrically conductive connector 16, i.e. the side surface of the electrically conductive connector 16 facing away from the first shielding structure 14. Specifically, the middle position of the conductive connecting member 16 in the longitudinal direction of the coaxial cable coincides with the middle position of the crimp tube 12 in the longitudinal direction of the coaxial cable such that both ends of the conductive connecting member 16 are the same distance from the corresponding both ends of the crimp tube 12.

In some embodiments, the mounting grooves 162 are uniformly spaced along the circumferential direction of the crimp tube 12 on the outer surface of the conductive connecting member 16, so that the outer cores 50 can be uniformly spaced on the outer side of the conductive connecting member 16 by sequentially disposing the outer cores 50 in the plurality of mounting grooves 162.

In some embodiments, a side surface of the conductive connecting member 16 facing away from the first protective structure 14 has a first region and a second region opposite to each other along a longitudinal direction of the coaxial cable, the plurality of mounting grooves 162 includes a first mounting groove 162 and a second mounting groove 162, the first mounting groove 162 is opened in the first region, the outer core 50 of the first cable 20 is disposed in the first mounting groove 162, the second mounting groove 162 is opened in the second region, and the outer core 50 of the second cable 30 is disposed in the second mounting groove 162. Further, the number of the first mounting grooves 162 is the same as the number of the second mounting grooves 162. It can be understood that, since the first cable 20 and the second cable 30 are the same coaxial cable, the number of the outer cores 50 of the first cable 20 and the second cable 30 is the same, and the number of the corresponding first mounting grooves 162 and the second mounting grooves 162 is also the same.

In other embodiments, the mounting slot 162 extends through the conductive connector 16 along the length of the coaxial cable. That is, the mounting groove 162 extends from the first region of the conductive connecting member 16 to the second region along the longitudinal direction of the coaxial cable, and the corresponding outer cores 50 of the first cable 20 and the second cable 30 are disposed in the same mounting groove 162.

It should be noted that, as described in the above embodiment, the conductive connecting member 16 is used for realizing the connection between the outer core 50 of the first cable 20 and the outer core 50 of the second cable 30, and the mounting groove 162 is used for facilitating the arrangement of the outer cores 50, so the mounting groove 162 may be disposed through the entire outer side surface of the conductive connecting member 16, or may be respectively opened in two regions opposite to the outer side surface of the conductive connecting member 16 along the longitudinal direction of the coaxial cable, and the specific form is not limited as long as the arrangement of the outer cores 50 is facilitated and the connection between the outer cores 50 of the first cable 20 and the outer cores 50 of the second cable 30 is ensured.

In some embodiments, the fixing member 18 is a hoop for fixing the outer cores 50 of the first and

second cables

20 and 30 in the mounting groove 162. Specifically, the fixing member 18 is a plastic anchor ear to avoid the anchor ear from forming eddy current due to conduction, and the fixing member 18 may be an anchor ear made of other insulating materials as long as it is ensured that the anchor ear is conductive and eddy current is formed to cause high temperature danger. Of course, in other embodiments, the anchor ear may also be a metal anchor ear, and the open ends of the metal anchor ear are spaced apart and connected by an insulating screw.

In some embodiments, the second protective structure 19 includes an insulating layer, a waterproof layer, and a plastic layer from inside to outside in order to ensure that the crimp tube 12 and the exposed inner core 40 are completely isolated from the outside, thereby achieving both insulation and preventing the influence of the external environment on the inner core 40. Specifically, the insulating layer is an insulating tape, the waterproof layer is a waterproof tape, the plastic layer is a PVC tape, the insulating tape is laid from the outer insulating layer of the first cable 20 to the outer insulating layer of the second cable 30, and the tape tests of other layers sequentially cover the insulating tape. It is understood that the second protective structure 19 is similar to the first protective structure 14 and is formed by winding the adhesive tape, so the overlapping wrapping manner is the same, and therefore, the description thereof is omitted.

Of course, the first protective structure 14 and the second protective structure 19 in the above embodiments do not only protect but also have a connection function, two ends of the first protective structure 14 extend to the inner insulating layers of the first cable 20 and the second cable 30, and two ends of the second protective structure 19 extend to the outer insulating layers of the first cable 20 and the second cable 30, so that the connection stability can be ensured while the protection function is performed.

Referring to fig. 3, based on the above-mentioned docking assembly for coaxial cables, the present invention also relates to a docking method for coaxial cables, which includes the following steps:

s110, the first cable 20 or the second cable 30 is inserted into the conductive connecting member 16, and one end of the first cable 20 or the second cable 30 extends out of the conductive connecting member 16.

In the above embodiment, it has been explained that, in order to prevent the conductive connecting member 16 from being inserted after the crimping of the core 40, the conductive connecting member 16 can be fitted over the first cable 20 or the second cable 30 only before the crimping of the core 40 is performed. Specifically, the end of the first cable 20 or the second cable 30 is cut so that the inner insulating layer is exposed, and then the conductive connector 16 is fitted over the inner insulating layer.

S120, the first cable 20 and the second cable 30 are respectively opened, so that the inner cores 40 of the first cable 20 and the second cable 30 are exposed for a predetermined length.

Further, for a cable sheathed with the conductive connector 16, only the inner insulating layer needs to be cut open, while for another cable not sheathed with the conductive connector 16, the entire end portion needs to be cut open to expose the inner core 40. Specifically, the preset length is 40 mm to 60 mm, and preferably 50 mm.

S130, the first cable 20 and the inner core 40 of the second cable 30 are coaxially disposed, and are respectively and fixedly connected to the inner cores 40 of the first cable 20 and the second cable 30 through the crimping tube 12.

S140, forming a first shielding structure 14 outside the crimp tube 12.

Further, the first shielding structure 14 covers the crimp tube 12 and the portion of the inner core 40 of the first cable 20 and the inner core 40 of the second cable 30 outside the crimp tube 12.

Specifically, an insulating tape, a waterproof tape, a fireproof tape and a PVC tape are sequentially wound around the outside of the crimping pipe 12 to form the first protective structure 14.

S150, the conductive connecting member 16 is moved to the first shielding structure 14.

Specifically, the conductive connecting member 16 is moved to the middle position of the crimp tube 12, and the distances from both ends of the conductive connecting member 16 to the corresponding both ends of the crimp tube 12 are ensured to be the same.

S160, the outer cores 50 of the first and

second cables

20 and 30 are placed in the mounting grooves 162 outside the conductive connecting member 16.

Specifically, the mounting grooves 162 are arranged at regular intervals in the circumferential direction of the crimp tube 12, and the corresponding outer cores 50 are arranged at regular intervals in the circumferential direction of the crimp tube 12. It is to be understood that the conductive connecting member 16 is a ring structure having a break, and thus the above-described uniform spacing arrangement should be understood in that the outer cores 50 are disposed on the conductive connecting member 16 first, and then the outer cores 50 are uniformly spaced on the conductive connecting member 16. Of course, the spacing between the outer cores 50 may be zero.

S170, the fixing element 18 is sleeved on the conductive connecting element 16 and covers the outer cores 50 of the first cable 20 and the second cable 30.

Specifically, the fixing member 18 is a plastic anchor ear for fixing the outer cores 50 of the first cable 20 and the second cable 30 in the mounting groove 162.

And S180, forming a second protective structure 19 on the outer side of the fixing piece 18.

Further, the second protective structure 18 covers the conductive connecting element 16, the fixing element 18, and the portions of the outer cores 50 of the first cable 20 and the second cable 30 outside the fixing element 18.

Specifically, the insulating tape, the waterproof tape and the PVC tape are sequentially wound on the outer side of the lead layer, and the insulating tape at the bottom layer extends to the outer insulating layers of the first cable 20 and the second cable 30 to be connected with the first cable 20 and the second cable 30.

By adopting the above-mentioned docking method for coaxial cables, the inner cores 40 of the first and

second cables

20 and 30 can be coaxially connected together by the crimping tube 12, the outer cores 50 of the first and

second cables

20 and 30 can be connected together by the conductive connecting member 16, the outer cores 50 of the first and

second cables

20 and 30 can be respectively disposed outside the conductive connecting member 16 around the conductive connecting member 16, and the outer cores 50 are fixed in the mounting grooves 162 of the conductive connecting member 16 by the fixing members 18. Compared with the traditional method of twisting the inner core 40 and the outer core 50 into two bundles respectively, the connecting part is effectively reduced in shape. Meanwhile, the inner core 40 and the outer core 50 do not need to be forked, so that the protection treatment at the joint is facilitated, the difficulty of the protection treatment is reduced, the conditions that the waterproof performance at the joint is low and faults are easily caused due to improper treatment are avoided, and the reliability is high. In addition, the manufacturing time is short by adopting the connection method, and the first-aid repair time is saved.

The utility model provides a coaxial cable system, includes first cable, second cable and the connection subassembly that is used for coaxial cable in the above-mentioned embodiment, connects subassembly one end fixed connection in first cable, and other end fixed connection in second cable to realize being connected between first cable and the second cable.

Compared with the prior art, the connection component and the connection method for the coaxial cable and the coaxial cable system provided by the invention have the following advantages:

1) the inner cores of the first cable and the second cable can be coaxially connected together through the crimping pipe, the outer cores can be fixedly connected through the approximately annular conductive connecting piece and the fixing piece in a matching mode, and the body shape change of a connection position is small;

2) the inner core and the outer core are not branched, so that the protection treatment at the joint is facilitated, the difficulty of the protection treatment is reduced, the conditions that the waterproof performance at the joint is low and faults are easily caused due to improper treatment are avoided, and the reliability is high;

3) the contact area between the outer core and the conductive connecting piece is large, so that the high-temperature risk is reduced, and the reliability is improved;

4) the manufacturing time is short, and the first-aid repair time is saved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a refute and connect subassembly for coaxial cable, coaxial cable include coaxial and interval first cable and the second cable of laying, its characterized in that, refute and connect the subassembly and include:

2. The docking assembly for a coaxial cable according to claim 1, wherein a plurality of the mounting grooves are arranged at an outer side of the conductive connecting member at regular intervals in a circumferential direction of the crimp tube.

3. The docking assembly for coaxial cable of claim 1, wherein the conductive connector is disposed away from a side surface of the first protective structure and has a first region and a second region opposite to each other along a longitudinal direction of the coaxial cable, the mounting grooves comprise a first mounting groove and a second mounting groove, the first mounting groove is disposed in the first region, an outer core of the first cable is disposed in the first mounting groove, the second mounting groove is disposed in the second region, and an outer core of the second cable is disposed in the second mounting groove.

4. The docking assembly for a coaxial cable according to claim 1, wherein the mounting groove penetrates the conductive connector in a lengthwise direction of the coaxial cable.

5. The docking assembly for a coaxial cable of claim 1, wherein a length of the conductive connector in a lengthwise direction of the coaxial cable is less than a length of the crimp tube in the lengthwise direction of the coaxial cable.

6. The docking assembly for a coaxial cable according to claim 1, wherein the conductive connector has first and second ends opposite to each other in a circumferential direction of the crimp tube, and the first and second ends are spaced apart from each other by a predetermined gap.

7. The docking assembly for coaxial cables of claim 6 wherein the cross-sectional shape of the conductive connector perpendicular to the lengthwise direction of the coaxial cable is preferably arcuate.

8. A method for docking a coaxial cable, comprising the steps of:

forming a first protective structure on the outer side of the crimping pipe;

moving the conductive connection onto the first guard structure;

forming a second protective structure on the outer side of the fixing piece;

the mounting groove is a plurality of, and follows the crimping pipe lengthwise direction extends, and is a plurality of the mounting groove is followed the circumference direction interval of crimping pipe is laid.

9. The docking method for coaxial cables of claim 8, wherein the predetermined length is 40 mm to 60 mm.

10. A coaxial cable system comprising a first cable, a second cable and the docking assembly for coaxial cable of any of claims 1-7, the docking assembly fixedly connected at one end to the first cable and at the other end to the second cable.