CN101800367B

CN101800367B - Coaxial cable connector

Info

Publication number: CN101800367B
Application number: CN201010111387XA
Authority: CN
Inventors: 宋志刚
Original assignee: LUOSENBOGE YATAI ELECTRONIC CO Ltd
Current assignee: LUOSENBOGE YATAI ELECTRONIC CO Ltd; Rosenberger Asia Pacific Electronics Co Ltd
Priority date: 2010-02-02
Filing date: 2010-02-02
Publication date: 2012-01-11
Anticipated expiration: 2030-02-02
Also published as: CN101800367A

Abstract

The invention discloses a coaxial cable connector. A coaxial cable comprises an inner conductor, a threaded outer conductor and a dielectric layer; the coaxial cable connector comprises an outer conductor with a central passage, an insulator and a central conductor which are arranged in the central passage, a pressure welding device which is arranged in the central passage and is provided with a central through hole, a clamping piece which is arranged in the central passage and is provided with the central through hole and a sleeve fastened at the second end of the outer conductor, wherein the outer conductor is provided with a second end for being inserted into the coaxial cable and a first end for being connected with the matched coaxial cable connector; the central conductor is provided with a longhole of which the inner diameter is matched with the external diameter of the inner conductor; an inner diameter of the central through hole, adjacent to the second end of the outer conductor, of the pressure welding device is matched with an outer diameter of the dielectric layer; and threads matched with the thread outer conductor are formed on the inner surface of the central through hole of the clamping piece. The coaxial cable connector has the advantages of simple structure, convenient machining and convenient and quick installation of the coaxial cable.

Description

Coaxial cable connector

Technical field

The present invention relates to the cable connector technology, especially relate to a kind of coaxial cable connector.

Background technology

Coaxial cable is widely used in various signals and transmits the especially occasion of video signal transmission, needs between the different cables effectively to connect, so that effectively transmitted signal is avoided the decay of signal, this need use coaxial cable connector and connect.

Coaxial cable connector except needs meet the demands on function, also need satisfy simple in structure, be convenient to processing, conveniently requirement of coaxial cable be installed.

Publication number is to disclose a kind of coaxial cable compression connector in the U.S. Patent application of US2009/0197465; Extremely shown in Figure 3 like Fig. 1; Coaxial cable 10 comprises the inner wire 18 (being the center conductor of coaxial cable, substituting for the ease of difference description and use inner wire that they are of equal value) from the exposure of remote extension; The screw thread outer conductor 14 of the exposure of on the axial region of the inner wire 18 that is close to said exposure, extending; And be arranged on the dielectric layer (not shown) between them, and having crust 12 outside the screw thread outer conductor 14 that does not have to expose, compression connector 20 comprises:

Connector body 22 with the first reverse end (end that connects other connector) and second end (end that is connected coaxial cable 10); Said first end outside is provided with nut 24; Between said first end and second end central passage is set; It has first internal diameter and the second different internal diameters, connects a transition portion 52 between the two;

Be arranged on the insulator 28 of first end of contiguous said connector in the said central passage, have annular projection 47 on it;

Be arranged in the said central passage, be used to connect the center conductor 30 of the inner wire 18 of said exposure, it comprises the seizure part 34 of fore-end 32 and the inner wire 18 that is used to block said exposure, can radial contraction when the outer surface of catching part 34 is squeezed;

Be arranged on the insulator fixture 36 in the said central passage, cooperate annular projection 47, be used to locate insulator 28;

Be arranged in the said central passage; Be used to block the clamping element 38 of the screw thread outer conductor 14 of said exposure; Have slit 39 on its outer surface 43, inner surface 45 has the screw thread with said screw thread outer conductor 14 couplings, and clamping element 38 can radial contraction when outer surface 43 was stressed;

Be arranged in the said central passage, be used to locate the retainer ring 48 of said clamping element 38, its ring edge 46 and transition portion 52 couplings;

Be connected the wedging ring 40 of second end of said connector body 22 movably, it can move to said first end from said second end vertically so that said clamping element 38 and said seizure part 34 in succession radial contraction combine with said coaxial cable 10; And

Be arranged on the elastic sealing element that seals 50 between said retainer ring 48 and the wedging ring 40; The elastic sealing element that seals between nut 24 and the connector body 22, the elastic sealing element that seals between wedging ring 40 and the connector body 22.

Inventor of the present invention finds that there is following problem at least in the compression connector 20 of this structure:

1, the length of the inner wire 18 of coaxial cable exposure is that operating personnel roughly estimate; Not necessarily very accurate; Because center conductor 30 is not positioned on axial direction exactly; If the length of the inner wire 18 that exposes is different, possibly causes the axial location of center conductor inconsistent, thereby influence electrical property;

2, catch the difficulty of processing that part 34, clamping element 38, transition portion 52 etc. have increased whole compression connector 20.

3, owing to catch the existence of part 34, cause to accomplish assembling in advance between center conductor 30 and the insulator 28, otherwise the inner wire 18 that exposes just can't be inserted in the seizure part 34 of radial contraction, limit installation process.Be center conductor 30 with insulator 28 between only in coaxial cable connector 20 is become the process of installment state by the prepackage state-transition, could accomplish assembling.

Summary of the invention

In order to solve the aforementioned problems in the prior, the purpose of this invention is to provide a kind of coaxial cable connector, it is simple in structure, be convenient to processing, that coaxial cable is installed is convenient and swift.

To achieve these goals, a kind of coaxial cable connector is provided, has been used to connect coaxial cable, said coaxial cable comprises inner wire, screw thread outer conductor and is arranged on the dielectric layer between them that said coaxial cable connector comprises:

Be provided with the outer conductor of central passage vertically, the outer conductor of said coaxial cable connector has first end and second end that is used to insert said coaxial cable of the coaxial cable connector that is used to connect coupling;

Be arranged in the said central passage, be provided with at least one insulator of central through hole vertically;

Be arranged on the interior center conductor of central through hole of said insulator; Said center conductor has vertically the deep hole of offering, be used for ccontaining said inner wire near second end of the outer conductor of said coaxial cable connector, the internal diameter of said deep hole and the external diameter of said inner wire coupling; And

With said insulator adjacency, be arranged in the said central passage, be provided with the compression bonding apparatus that stops that said screw thread outer conductor moves to first end of the outer conductor of said coaxial cable connector of being used to of central through hole vertically;

With said compression bonding apparatus adjacency, be arranged in the said central passage, be provided with the holding part of central through hole vertically, the central through hole inner surface of said holding part has the screw thread with said screw thread outer conductor coupling;

With said holding part adjacency; Snap onto the sleeve of second end of the outer conductor of said coaxial cable connector; Said sleeve can be vertically moves to first end of the outer conductor of said coaxial cable connector from second end of the outer conductor of said coaxial cable connector; Make said screw thread outer conductor under the prevention of said compression bonding apparatus, take place to pile up and fix, and said inner wire is inserted in the deep hole of said center conductor.

As preferably; Said insulator comprises near first insulator of first end of the outer conductor of said coaxial cable connector with near second insulator of second end of the outer conductor of said coaxial cable connector; The outer surface of said center conductor is provided with the annular protrusion that is used to locate said center conductor, and said first insulator and second insulator are respectively by being located at the both sides of said annular protrusion.

As preferably, said second insulator is provided with an annulus near the end face of said annular protrusion, the internal diameter of said annulus and the external diameter of said annular protrusion coupling, said annulus length and said annular protrusion equal in length vertically vertically.

The present invention also provides a kind of coaxial cable connector, is used to connect coaxial cable, and said coaxial cable comprises inner wire, screw thread outer conductor and be arranged on the dielectric layer between them that said coaxial cable connector comprises:

With said insulator adjacency; Be arranged in the said central passage; Be provided with the crimp that is used to push said screw thread outer conductor of central through hole vertically, the central through hole of said crimp is near the external diameter coupling of the internal diameter and the said dielectric layer of second end of the outer conductor of said coaxial cable connector;

With said crimp adjacency, be arranged in the said central passage, be provided with the holding part of central through hole vertically, the central through hole inner surface of said holding part has the screw thread with said screw thread outer conductor coupling;

With said holding part adjacency; Snap onto the sleeve of second end of the outer conductor of said coaxial cable connector; Said sleeve can be vertically moves to first end of the outer conductor of said coaxial cable connector from second end of the outer conductor of said coaxial cable connector; Make said holding part that said screw thread outer conductor is expressed to the end face of said crimp,, and said inner wire is inserted in the deep hole of said center conductor so that said screw thread outer conductor takes place to pile up and fix.

As preferably, said first insulator is provided with blind hole vertically.

As preferably; Have first step and second step in the central through hole of said crimp; Said first step and second step make second end of central through hole from first end of the outer conductor of said coaxial cable connector to the outer conductor of said coaxial cable connector of said crimp have first internal diameter, second internal diameter and the 3rd internal diameter successively; Said first internal diameter is greater than said second internal diameter; Said second internal diameter is greater than said the 3rd internal diameter, and the external diameter of said the 3rd internal diameter and said dielectric layer matees.

As preferably, the central through hole of said holding part is provided with an annular table near second end of the outer conductor of said coaxial cable connector, and said annular table is used for the crust end against said coaxial cable.

As preferably, first end of the outer conductor of said coaxial cable connector is provided with the compensated loop that is used for electrical compensation.

As preferably, the outer surface of said center conductor is provided with the protruding thorn structure that is used to locate.

The invention has the beneficial effects as follows:

1, utilizes crimp extruding coaxial cable screw thread outer conductor, make screw thread outer conductor (being the screw-shaped copper sheet in the embodiment of the invention) be crushed and pile up, thereby and coaxial cable is fixedly secured at the end face of crimp.No longer need process special ability radial contraction clamping element, have can radial contraction the parts such as center conductor of seizure part, simplified the structure of coaxial cable connector, process conveniently, and the installation coaxial cable is convenient and swift.

2, center conductor is under the cooperation of annular protrusion, protruding thorn structure, first insulator and second insulator, and axial location has very accurately guaranteed requirement on electric performance.

3, since the deep hole internal diameter of center conductor and the inner conductor outer diameter of coaxial cable mate; Therefore center conductor and insulator both can promptly be accomplished assembling in advance before coaxial cable connector inserts coaxial cable; Also can in the process of inserting coaxial cable, accomplish assembling, installation process is more flexible.

Description of drawings

Fig. 1 is the structural representation (prepackage state) that the coaxial cable compression connector of prior art dissects vertically;

Fig. 2 is the structural representation (installment state) that the coaxial cable compression connector of prior art dissects vertically;

Fig. 3 is the decomposition texture sketch map of the coaxial cable compression connector of prior art;

Fig. 4 is the structural representation that the coaxial cable of needs connection in the embodiment of the invention dissects vertically;

Fig. 5 is the structural representation (prepackage state) that the coaxial cable connector of the embodiment of the invention dissects vertically;

Fig. 6 is the structural representation (installment state) that the coaxial cable connector of the embodiment of the invention dissects vertically;

Fig. 7 is the decomposition texture sketch map of the coaxial cable connector of Fig. 4;

Fig. 8 is the structural representation of the crimp among Fig. 4;

Fig. 9 is the structural representation (prepackage state) that the coaxial cable connector of an alternative embodiment of the invention dissects vertically.

The main Reference numeral of background technology

10 coaxial cables 34 are caught part

12 crusts, 40 wedging rings

14 screw thread outer conductors, 46 ring edges

18 inner wires, 47 annular projections

20 compression connectors, 48 retainer rings

22 connector bodies, 50 elastic sealing elements

24 nuts, 52 transition portions

28 insulators, 36 insulator fixtures

30 center conductors, 38 clamping elements

32 fore-ends

The main Reference numeral of the present invention

60 coaxial cables connect 601 first seals

61 (coaxial cable connector) outer conductor, 602 second seals

62 center conductors 603 the 3rd seal

63 first insulators, 604 nuts

64 second insulators, 70 coaxial cables

65 crimps, 71 inner wires

66 holding parts, 72 dielectric layers

67 sleeves, 73 screw thread outer conductors

74 crusts

Embodiment

Specify embodiments of the invention below in conjunction with accompanying drawing.

Extremely shown in Figure 7 like Fig. 4; Coaxial cable connector 60 is used to connect coaxial cable 70; Coaxial cable 70 comprises the inner wire 71 (being the center conductor of coaxial cable) from remote extension, the screw thread outer conductor 72 (being the screw-shaped copper sheet in the present embodiment) that on the axial region of contiguous said inner wire 71, extends, and be arranged on the dielectric layer 73 between them; Have crust 74 outside the screw thread outer conductor 72, coaxial cable connector 60 comprises:

Be provided with the outer conductor 61 of central passage vertically; Outer conductor 61 has first end and second end that is used to insert coaxial cable 70 of the coaxial cable connector (female joint of male joint coupling) that is used to connect coupling, and the first end outer surface of outer conductor 61 is arranged with nut 604.In order to satisfy requirement on electric performance better, first end of outer conductor 61 is provided with the compensated loop 611 that is used for electrical compensation;

Be arranged in the said central passage; Be provided with first insulator 63 and second insulator 64 of central through hole vertically; First insulator 63 is near first end of outer conductor 61; Second insulator 64 is near second end of outer conductor 61, and first insulator 63 is provided with the blind hole 631 of redeeming vertically;

Be arranged on the interior center conductor 62 of central through hole of first insulator 63 and second insulator 64; The outer surface of center conductor 62 is provided with annular protrusion 622; First insulator 63 and second insulator 64 are located at the both sides of annular protrusion 622 respectively; Tightr in order to make that second insulator 64 and annular protrusion 622 combine, second insulator 64 is provided with an annulus 641 near the end face of annular protrusion 622, annulus 641 length and annular protrusion 622 equal in length vertically vertically.The purpose that two insulators are set is for the accurate axial location of centre of location conductor 62, is equivalent to through annular protrusion 622 center conductor 62 clampings, and axial location very accurately.Also be provided with the protruding thorn structure (not shown) that is used to locate on the outer surface of center conductor 62, it also is feasible therefore only using an insulator, and the axial location of center conductor 62 relies on protruding thorn structure fully in this case.

Center conductor 62 has vertically the deep hole 621 of offering, be used for ccontaining said inner wire 71 near second end of outer conductor 61; The external diameter coupling of the internal diameter of deep hole 621 and said inner wire 71, the internal diameter of deep hole 621 remains changeless when center conductor 62 is squeezed; And

With insulator 64 adjacency; Be arranged in the said central passage; Be provided with the crimp 65 that is used to push said screw thread outer conductor 72 of central through hole vertically; The central through hole of crimp 65 is near the external diameter coupling of the internal diameter of second end of outer conductor 61 and dielectric layer 73, thus when said screw thread outer conductor 72 when first end of outer conductor 61 moves, crimp 65 stops also thread-rolling screw outer conductors 72; Make the screw thread outer conductor 72 (the screw-like copper sheet that promptly is crushed) that flattens pile up, also can have the small pile-up phenomenon in the central through hole of crimp 65 certainly at the end face of crimp 65.As shown in Figure 8; Have first step 651 and second step 652 in the central through hole of crimp 65; First step 651 and second step 652 make second end of central through hole from first end of outer conductor 61 to outer conductor 61 of crimp 65 have first internal diameter 653, second internal diameter 654 and the 3rd internal diameter 655 successively; First internal diameter 653 matees greater than the external diameter of the 3rd internal diameter 655, the three internal diameters 655 with dielectric layer 73 greater than second internal diameter, 654, the second internal diameters 654., this variable-diameter structure is the possibility that reflection takes place for the electromagnetic wave that reduces to conduct, to satisfy requirement on electric performance better; Certainly; The structure of crimp is not unique; As long as be used to stop that said screw thread outer conductor moves to first end of said outer conductor, make said screw thread outer conductor under the prevention of said compression bonding apparatus, take place to pile up and fixing similar compression bonding apparatus gets final product, as shown in Figure 9; With between crimp in the present embodiment 65 and the holding part 66 through cone match different be to cooperate through step surface between crimp 65 and the holding part 66.

With crimp 65 adjacency; Be arranged in the said central passage; Be provided with the holding part 66 of central through hole vertically, the central through hole inner surface of holding part 66 has the screw thread with said screw thread outer conductor 72 couplings, is similar to cooperating between nut and the nut; The radial dimension of holding part 66 is changeless, therefore processes very convenient.In order to locate coaxial cable 70, the central through hole of holding part 66 is provided with an annular table 661 near second end of outer conductor 61, and annular table 661 is used for crust 74 ends against coaxial cable 70, the external diameter coupling of the internal diameter of annular table 661 and crust 74;

With holding part 66 adjacency, snap onto the sleeve 67 of second end of outer conductor 61, sleeve 67 can be vertically moves to first end of said outer conductor 61 from second end of said outer conductor 61.Move (first end position is fixed) through sleeve 67 to first end of outer conductor 61 from second end of outer conductor 61; Crimp 65 extruding coaxial cable screw thread outer conductors 72; Screw thread outer conductor 72 is crushed and piles up at the end face of crimp 65; It is fixing to make that screw thread outer conductor 72 is crimped part 65, fixedly secures thereby make coaxial cable 70 be crimped part 65.This process need use the coaxial cable connector instrument to accomplish usually, and is specific as follows:

Coaxial cable 70 is inserted in the coaxial cable connector 60 of prepackage state; Rotation coaxial cable 70 is resisted against on the annular table 661 up to crust 74 locatees; The coaxial cable connector 60 that to pre-install state then is placed in the instrument, exerts pressure to make move toward one another between sleeve 67 and the nut 604, thereby makes inner wire 71 insert in the deep holes 621; Screw thread outer conductor 71 ends are crimped part 65 extruding and pile up at the end face of crimp 65, thereby make that coaxial cable 70 is fixedly secured.Coaxial cable connector 60 becomes installment state by the prepackage state-transition.

In order to guarantee good sealing property, be provided with first seal 601 between nut 604 and the outer conductor 61, be provided with second seal 602 between holding part 65 and the outer conductor 61, be provided with the 3rd seal 603 between sleeve 67 and the holding part 61.

Can find out that the advantage of the coaxial cable connector 60 of present embodiment is:

1, being different from the radial contraction of the seizure part 34 that relies on center conductor 30 in the prior art and the radial contraction of clamping element 38 (needs connector body 22 to have first internal diameter and the second different internal diameters; Connect a transition portion 52 between the two) and realize the fixing of coaxial cable; The internal diameter of the deep hole 621 of coaxial cable connector 60 correspondences of present embodiment is constant; The size of holding part 66 is constant; But through crimp 65 thread-rolling screw outer conductors 72, the screw-like copper sheet of flattening is piled up at the end face of crimp 65, thereby makes that coaxial cable 70 is fixedly secured.Thus, coaxial cable connector 60 no longer need be provided with the bigger seizure part 34 of difficulty of processing, clamping element 38, transition portion 52, simplifies the structure, and is easy to processing, and it is convenient and swift that coaxial cable is installed.

2, the coaxial cable connector 60 of present embodiment is under the cooperation of annular protrusion 622, protruding thorn structure, first insulator 63 and second insulator 64; Center conductor 62 location very accurately; Even the length of inner wire 71 there are differences because of the artificial origin; The length that also only can cause inner wire 71 to insert in the deep hole 621 is different slightly, and the axial location of center conductor 62 can't change, and has guaranteed requirement on electric performance.

3, both can, promptly accomplish by coaxial cable connector 60 assembling before inserting coaxial cable 70 in advance between the center conductor 62 and first insulator 63 and second insulator 64; Also can in the process of inserting coaxial cable 70, under the promotion of inner wire 71, accomplish assembling, installation process is more flexible.

Above embodiment is merely exemplary embodiment of the present invention, is not used in restriction the present invention, and protection scope of the present invention is limited additional claims.Those skilled in the art can make various modifications or be equal to replacement the present invention in essence of the present invention and protection range, this modification or be equal to replacement and also should be regarded as dropping in protection scope of the present invention.

Claims

1. a coaxial cable connector is used to connect coaxial cable, and said coaxial cable comprises inner wire, screw thread outer conductor and be arranged on the dielectric layer between them that said coaxial cable connector comprises:

2. coaxial cable connector according to claim 1; It is characterized in that; Said insulator comprises near first insulator of first end of the outer conductor of said coaxial cable connector with near second insulator of second end of the outer conductor of said coaxial cable connector; The outer surface of said center conductor is provided with the annular protrusion that is used to locate said center conductor, and said first insulator and second insulator are respectively by being located at the both sides of said annular protrusion.

3. coaxial cable connector according to claim 2; It is characterized in that; Said second insulator is provided with an annulus near the end face of said annular protrusion; The internal diameter of said annulus and the external diameter of said annular protrusion coupling, said annulus length and said annular protrusion equal in length vertically vertically.

4. a coaxial cable connector is used to connect coaxial cable, and said coaxial cable comprises inner wire, screw thread outer conductor and be arranged on the dielectric layer between them that said coaxial cable connector comprises:

With said insulator adjacency; Be arranged in the said central passage; Be provided with the crimp that stops that said screw thread outer conductor moves to first end of the outer conductor of said coaxial cable connector of being used to of central through hole vertically, the central through hole of said crimp is near the external diameter coupling of the internal diameter and the said dielectric layer of second end of the outer conductor of said coaxial cable connector;

5. coaxial cable connector according to claim 4; It is characterized in that; Said insulator comprises near first insulator of first end of the outer conductor of said coaxial cable connector with near second insulator of second end of the outer conductor of said coaxial cable connector; The outer surface of said center conductor is provided with the annular protrusion that is used to locate said center conductor, and said first insulator and second insulator are respectively by being located at the both sides of said annular protrusion.

6. coaxial cable connector according to claim 5; It is characterized in that; Said second insulator is provided with an annulus near the end face of said annular protrusion; The internal diameter of said annulus and the external diameter of said annular protrusion coupling, said annulus length and said annular protrusion equal in length vertically vertically.

7. coaxial cable connector according to claim 5 is characterized in that, said first insulator is provided with blind hole vertically.

8. according to the described coaxial cable connector of one of claim 4 to 7; It is characterized in that; Have first step and second step in the central through hole of said crimp; Said first step and second step make second end of central through hole from first end of the outer conductor of said coaxial cable connector to the outer conductor of said coaxial cable connector of said crimp have first internal diameter, second internal diameter and the 3rd internal diameter successively; Said first internal diameter is greater than said second internal diameter, and said second internal diameter is greater than said the 3rd internal diameter, and the external diameter of said the 3rd internal diameter and said dielectric layer matees.

9. according to the described coaxial cable connector of one of claim 4 to 7; It is characterized in that; The central through hole of said holding part is provided with an annular table near second end of the outer conductor of said coaxial cable connector, and said annular table is used for the crust end against said coaxial cable.

10. coaxial cable connector according to claim 4 is characterized in that, first end of the outer conductor of said coaxial cable connector is provided with the compensated loop that is used for electrical compensation.