TWI322539B - Adapter for mini-coaxial cable - Google Patents

Description

1322539 IX. INSTRUCTIONS: RELATED APPLICATIONS This application is a small coaxial cable adapter (MINI-) of the patent application No. 10/3 13,787 submitted by Randall A. Holliday and Sheng Chia Wong on December 6, 2002. COAXIL CABLE CONNECTOR), Randall A Holliday's patent application No. 1/6 16,273, filed on July 8, 2003, to UNIVERSAL CRIMPING CONNECTOR and Randall A. Holliday on March 18, 2003 Continuation of the application of the patent application Serial No. 10/3,03,02, the entire disclosure of which is hereby incorporated by reference. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial cable adapter, and more particularly to a novel and improved terminal adapter or adapter for a coaxial cable end connector. Used to join a cable to another cable or to a terminal or terminal. (2) Prior art is related to connecting small coaxial cables and large-sized cables to a terminal or terminal. The problem is already in the above-referenced related patent application small coaxial cable adapter (MINI-COAXIL CABLE CONNECTOR) and US Patent No. 6,352,448 patent TV terminal cable connector usage guide (CABlE TV END CONTECTOR STARTER GU ID E) Detailed discussion. The object of the present invention is to further apply a terminal adapter to a small coaxial cable. In particular, the terminal adapter is composed of few components so that the 1322539 can be quickly assembled at a processing site and a work site. The device is particularly suitable for small The coaxial cable is connected to an RCA connector. (III) SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel and improved adapter for use in a coaxial cable. Another object of the present invention is to provide a novel and improved adapter for use in a small diameter coaxial cable and for installation with a simple tool and minimal steps. Another object of the present invention is to provide a novel and improved adapter for mounting a coaxial cable and ensuring precise alignment between the cable and the connector prior to crimping the connector to the cable To prevent short circuits between the cable layers and between the conductive parts of the connectors. Another object of the present invention is to provide a novel and improved adapter that can be prepared for the end of a coaxial cable that is mounted to an end connector that is pre-assembled with a crimp ring. According to the present invention, an adapter for connecting an end of a coaxial cable to a hollow connector body is provided, wherein the cable includes inner and outer center conductors, an annular insulating layer and an outer jacket. The annular insulating layer spaces the conductor from the outer jacket, the outer jacket being formed of a non-conductive material. The inner and outer conductors are exposed and the inner conductor projects beyond the insulator at one end of the cable. The adapter includes at least one sleeve having an electrically conductive portion surrounding the outer conductor and an insulating portion surrounding the insulating layer. The opening is located at a front end of the adapter for mounting the extension head It is electrically connected to the inner conductor. A solution is to use a sleeve having an opening of 1322539 with an increased insulation to allow a second sleeve to be inserted therein, which helps to align and center the inner conductor. The sleeve is designed to be sized such that a crimp ring 'such as for a RAC connector, the sleeve is tightly crimped to the insulating layer' and the sleeve is slotted with a radial shape with internal and external dentations such that the sleeve ends The end is properly crimped to the cable without crushing the insulation. Therefore, it is to be understood that the foregoing description of the embodiments of the invention may be Various modifications are possible in the context of the principles of the invention, and such equivalents are included within the scope and scope of the invention. The above and other objects, advantages and features of the present invention will become more <RTIgt; (4) Embodiments First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings, in which: a standard coaxial cable C, sleeves 10 and 12 are illustrated in more detail with reference to the accompanying drawings. An RCA type cable connector 14 and an extension head 16. As mentioned in the present invention, the cable C is composed of an inner conductor lead or wire 20, a dielectric insulating layer 22, a braided conductor layer 24 and an outer sheath 26, wherein the insulating layer 22 is made of a non-conductive material such as rubber or rubber. The outer lead 26 is also composed of a non-conductive material such as rubber or rubber. The end of the cable C is further prepared for assembly: the installation of a terminal adapter consisting of a finite length outer sheath 26 and a braid 24 1322539, which is mounted on an RCA type suitable for small coaxial cables. CATC connector 14. The connector 14 is comprised of a metal ring 70 that is slotted at 72 into an arcuate portion 74 for attachment to a terminal or terminal. As shown in Figures 7 and 8, the annular base 76 of the metal ring 70 defines a central opening or passageway 78 for inserting the extension head 16 therein beyond a portion of the end of the metal ring, and an elongated tubular portion. The 80 has an end portion 80 disposed within the base portion 76. An annular retainer 84 is disposed between the base 76 and the outer shoulder 82 on the end portion 82. The retainer has a radial outer shoulder 85 that projects outwardly from the shoulder 82 and tapers forward. It is flush with the outer surface of the metal ring 70. Moreover, the elongated tubular portion 80 extends rearwardly from the shoulder portion 82 to define a first sleeve portion 86 that extends conically from the circular recess or recess 814 and Terminates at a thickened annular end 88. The annular end portion 88 has an outer wall surface 89 which tapers rearwardly and an inner wall surface having an annular seal ring or projection 90 thereon. The thickened end 88 of the sleeve 80 also defines an outer shoulder 91 for receiving a crimp ring 92. The placement of the crimp ring 92 will now be described. The crimp ring 92 can be pre-mounted on the connector 14 and the crimp ring advances axially on the sleeve 80 to crimp it with the slotted end 44 of the sleeve 42. To this end, the crimp ring 92 has an annular body 92'. The body 92 is made of a low friction material having a finite compression ratio such as DELRIN® (Poly-Vinyl Resin) or other hard plastic material. The body has a generally cylindrical portion 93 and a forward tapered portion 94 which terminates in the forward end of an inner shoulder or projection 95. As shown in Fig. 6, the forward cone 10 - 1322539 portion 94 serves as a fitting for the tapered outer wall surface 89 on the end portion 88 to enable the crimp ring 92 to be along the shaft above the end of the sleeve 80. Advancing until the inner shoulder 95 advances over the shoulder 91' to complete the pre-assembly of the crimp ring 92 to the connector 14. The outer surface of the body 92' is concave or undercut to receive the reinforcing strip 96, which is preferably adapted to be in close contact with the body 92'. The front end 97 of the reinforcing strip 96 projects outwardly along the outer surface of the body to define an outer shoulder corresponding to the diameter of the trailing end of the tapered surface portion 85. Referring to Figures 7 and 7A, the terminal adapter is inserted into the connector such that the front end of the tubular portion 36 abuts the base 76 of the metal ring, the outer surface 38 of the tubular portion and the end 82 of the sleeve 80. The surfaces are joined and the ends 44 are aligned with the seal ring 90. The sleeve 80 is advanced axially using a standard crimping tool such that the front end or projection 95 snaps into the groove 87 and abuts the shoulder 83. The tapered surface 94 radially contracts the end portion 88 such that the sealing projection 90 meets exactly the serrations or dentations 45 on the end portion 44 and sequentially crimps the end portion 44 to the outer jacket. 26 and a woven back fold layer 24'. The crimping tool is disclosed in the related patent application Serial No. 09/960,566, filed on Sep. 20, 2001, which is hereby incorporated by reference. This cooperation between crimping the projections 90 to the dentations 45 and crimping the dentations 45 to the woven backing layer 24' and the outer jacket 26 increases the transfer of the cable C and the connector 14 from the terminal. Pull out the required external force on the device. 1322539 Second Embodiment A small coaxial cable is particularly suitable for applications where the space is relatively small and the cable is relatively short, such as a bee phone, a security camera, and the like. Obviously, depending on the specific wire or cable diameter and the amount of space allowed between the cable C and the connector 14, the dimensions and proportions of the sleeves 1 and 12 are different. For example, as shown in Figures 9 through 12, a variation of the present invention eliminates the sleeve 10 and 'increased the tubular portion 36' compared to the tubular portion 36 shown in Figures 1 through 8. thickness. Moreover, an annular guide groove 3 (the ridge extends laterally along the tubular portion 36' to limit the extent to which the cable C extends forward into the sleeve and guides the lead 20. The slots in the first and second embodiments The widths of 46 and 46' can be adjusted according to the respective amount of tightening required for the ends 44 or 44. so that the outer sheath is immediately adjacent without crushing the insulating layer 22. It is apparent that in the first embodiment The crimping tool, which is described in detail in the above-referenced patent application Universal Pressure CRIMPING TOOL, can also effectively crimp the connector 14, the sleeve 12 and the cable C together. The tapered surface assisted between the crimp ring 92' and the sleeve 80 allows crimping of different sized cables C using the same size connector 14. The only change required is the adjustment of the inner diameter of the sleeve 12 and the slots 46 and The width of 46', as previously described, allows the outer sheath 26 of the cable to be properly connected without crushing the insulating layer 22. The terminal adapter can also be used with the multi-segment compression transfer of the patent application referenced herein. UNIVERSAL MULTI-STAGE COMPRESSION CONN ECTOR) - work together. -12- 1322539 Main component symbol description 10,12 Sleeve 14 Cable connection 16 Extension head 20 Lead 2 1 Foil layer 22 Dielectric 24 Braid 26 Outer sheath 28 Cylindrical 3 0 End wall 32 Hole 34 inner shoulder 3 6,3 6' tubular portion 3 8 raised 42 thin wall 44 arcuate end 45 toothed portion 46 slot 48 round tr · f drying 5 0 extended 52 Λ. 刖 end 54 open The connector insulation body (end wall) extending from the groove end 56 is divided into a surface sleeve 0 part holder. Cylindrical metal body section slot -15- 1322539 5 8 Bow section 60 Center opening 62 Hole 64 Outer shoulder ( Outer 66 Tapered End 70 Metal Ring 74 Arched Section 76 Annular Base 78 Channel (opening 80 extended tube; 82 shoulder portion 83 shoulder 84 retainer 85 outer shoulder 86 first - sleeve: 87 groove (concave Port 8 8 Annular end 89 Outer wall surface 90 Ring seal 1 9 1 Outer shoulder 92 Crimp ring 92' Ring main] 93 Straight cylinder 194 cone-shaped ridge portion) (projection) portionwise within minutes -16-132253995 reinforcing strip 97 96 shoulder elastic distal section 98

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Claims (1)

^22539 X. Patent Application: An adapter for connecting a male end of a cable to a hollow connector body, wherein the cable has inner and outer central electrical conductors and a conductor and a non-conductive The inner and outer conductors of the outer sheath of the material consist of an exposed portion, and the adapter includes: an extension head formed of a conductive material and having a concave shape Receiving an exposed portion of the inner conductor: and a sleeve, the sleeve including a first portion formed of a non-conductive material that engages the insulator and an exposed portion of the outer conductor formed of a conductive material The second part of the connection. 2. The adapter of claim 1 wherein said groove extends through a trailing end of the extension head, said trailing end having a longitudinal slot that meets the periphery of said groove. An adapter according to claim 2, wherein the extension end is connected to the front end of the insulating layer. 4. The adapter of claim 3, wherein the sleeve includes a front end that is in a surrounding relationship with the end of the extension head and a rear end that is in a surrounding relationship with the exposed end of the insulating layer. 5. The adapter of claim 4, wherein the end of the sleeve abuts the front end of the outer conductor. 6. The adapter of claim 4, wherein the extension head end is plugged to the front end of the sleeve with a tight fit. The adapter of claim 1 , wherein the sleeve end has an annular longitudinal slot defined in the end of the sleeve with inner and outer rings -18- 1322539 extending teeth The arcuate portion of the protrusion. 8. The adapter of claim 1, wherein the connector body comprises a crimp ring at one end of the body and a transverse retainer axially spaced from the crimp ring for receiving leads . 9. The adapter of claim 8 wherein said body includes a crimp sleeve at a forward end of said crimp ring, said crimp sleeve being responsive to said crimp ring at said crimp sleeve The upper axial advancement is radially outwardly contracted into engagement with the trailing end of the sleeve. 10. The adapter of claim 7, wherein the width of the slot is designed to define a radially inward contraction of the bow portion into a crimped engagement with the outer sheath without crushing The insulating layer is described. 11. The adapter of claim 10, wherein the connector body includes an annular retainer that receives the sleeve when the extension head is inserted into the front end of the connector body. 12. An assembly for connecting a small coaxial cable end to an empty connector body, wherein the cable has inner and outer center conductors and an outer jacket separating the conductor from a non-conductive material An annular insulating layer, the inner and outer conductors having exposed portions, the inner conductor extending beyond the insulator at one end of the cable, the improvement of the assembly comprising: a first sleeve, the first sleeve being non- a conductive material consisting of and surrounding the insulator; a second sleeve comprising a first portion formed of a conductive material and connected to the outer conductor and surrounded by a non-conductive material a second portion around a sleeve; -19- 1322539 - an extension head' is formed of a conductive material and is electrically connected to the inner conductor by a recess of the second sleeve. The assembly of claim 12, wherein the extension head has a recessed end for inserting the inner conductor, and the tail end is configured to be engaged with the recessed end. . 14. The assembly of claim 13 wherein said trailing end has a central opening and a longitudinal slot that interfaces with said central opening. 15. The assembly of claim 12, wherein the first sleeve comprises an annular end wall at a front end thereof. 16. The assembly of claim 15 wherein the second sleeve tail includes a circumferentially distributed longitudinal slot and the width of the slot is designed to limit the second sleeve end inward Radial contraction to prevent crushing of the insulating layer. The assembly of claim 15 wherein the connector body comprises a crimp ring at one end of the body and a crimp sleeve for receiving the front end of the crimp ring, the crimping The sleeve is radially contracted, and the axial end of the crimp ring on the crimp sleeve is crimped into engagement with the tail end of the second sleeve.