CA1216910A - Solderless connectors for semi-rigid coaxial cable - Google Patents
Solderless connectors for semi-rigid coaxial cableInfo
- Publication number
- CA1216910A CA1216910A CA000440830A CA440830A CA1216910A CA 1216910 A CA1216910 A CA 1216910A CA 000440830 A CA000440830 A CA 000440830A CA 440830 A CA440830 A CA 440830A CA 1216910 A CA1216910 A CA 1216910A
- Authority
- CA
- Canada
- Prior art keywords
- housing
- annular portion
- cable
- connector
- connector according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000004020 conductor Substances 0.000 claims abstract description 38
- 239000003989 dielectric material Substances 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000000977 initiatory effect Effects 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 241000448280 Elates Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000002844 continuous effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
- H01R9/0518—Connection to outer conductor by crimping or by crimping ferrule
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A solderless connector for semi-rigid coaxial cable (3) having an elongate annular outer conductor (4), a center conductor (5) coaxial with said outer conductor and a dielectric material (6) spacing the inner and outer conductors apart, the connector comprising a housing (1) having an annular portion defining a bore (2) adapted to encompass said outer conductor and a bushing (13) defining a bore to engage the exterior of the annular portion to circumferentially compress said annular portion upon telescoping movement of said bushing over said annular portion, said housing bore having, integral therewith, means (16) adapted to engage said outer conductor upon said circumferential compression to provide a mechanical and electrical interface between said housing and said outer conductor.
A solderless connector for semi-rigid coaxial cable (3) having an elongate annular outer conductor (4), a center conductor (5) coaxial with said outer conductor and a dielectric material (6) spacing the inner and outer conductors apart, the connector comprising a housing (1) having an annular portion defining a bore (2) adapted to encompass said outer conductor and a bushing (13) defining a bore to engage the exterior of the annular portion to circumferentially compress said annular portion upon telescoping movement of said bushing over said annular portion, said housing bore having, integral therewith, means (16) adapted to engage said outer conductor upon said circumferential compression to provide a mechanical and electrical interface between said housing and said outer conductor.
Description
6~
SOLDERI,E:SS CONNIiJ('TORS FOR 5~MI-RIGID COAXIAL CABLE
The present invention ~elates to solderless connectors suitable for use with semi-rigid coaxial cable.
Semi-rigid coaxial cable, which is used, particularly, where a high degree of RF shielding is required, comprises a solid tubular outer conductor, usually of copper, centrally disposed ithin which is an inner conductor spaced from the outer conductor by a dielectric material.
Direct solder attachment of connectors to semi-rigid cable has, until now, been the only reliable arrangemerlt where a connector is required to function reliably in extreme environmental conditions which may include high vibration levels and high continuous/oscillating mechanical and thermal stress.
Such direct solder attachment of the connector body to the copper sheath of a semi-rigid coaxial cable has always been a production problem because of the experience and skills that have to be developed to maintain an efficient operation. A
narrow time/temperature range is needed to promote solder flow while minimizing undesirable heating effects on the confined cable dielectric. In addition, precision equipment is necessary for repeat~ble connector positioning. In spite of these difficulties, mechanical cable/connector junctions have not gained wide acceptance. Bulk, cost, lack of permanency, and to some extent, poor performance havé been against mechanical connectors. Special cable preparation has led to only limited acceptance of a connector design utilizing a crimp to preknurled cable arrangement. Nevertheless, a mechanical concept, lIL;Z~6~
with designed-in control of the assembly is desirable for consistent performance and for improved productivity.
Although solderless connectors are well-known and have been widely used in many applications for flexible and semi-rigid cable assemblies, there useful application has been limited to situations in which vibration and stress are not problems.
A basic requirement in providing a solderless connector for use in such extreme environment conditions is that of providing mechanical and electrical interconnection of high integrity between the outer con~1uctor and the connector itself. A recent attempt at providing such a connector is embodied in AMP Incorporated's SMA
coaxial connector which is described and illustrated on Pages 261 and 262 of AMP IncO's catalog entitled "AMP Guide to RF Connectors,"
Catalog 80-570 published 7/82.
The AMP connector for semi-rigid coaxial cables utilizes a ferrule or gripper ring which interconnects the main housing of the connector with the outer conductor of the semi-rigid cable.
The gripper ring in this design lncludes a plurality of teeth extending from the annular end of the ring axially of the connector and arranged to be deformed or bent radially inwardly to engage the outward conductor of the cable upon the application of a force to telescope the ferrule and housing together. By this telescoping action the teeth are bent inwardly to engage the outer conductor while the main housing achieves an interference fit with the ferrule thereby to retain the connector on the cable. In this design the mechanical and electrical integrity of the 3~2~6~
-3 ~
mounting of the connector on the cable involves, firstly, the integrity of the connection between the ferrule and the outer conductor of the cable and, secondly, the interference fit between the ferrule and the housing. Failure of either o:E these will destroy 05 the integrity of -the mounting oE the connector on the cable. In particular, it has been found that the interference fit between the ferrule and -the housing is subject to failure upon the application of a longitudinally acting force on the connec-tor relative to the cable which is of a magnitude insuEficient to damage the cable or the connection of the ferrule with that cable.
It is an object of the present invention to provide an improved solderless connector for semi-rigid coax.ial cable which provides high mechanical and electrical integrity under extreme environmental conditions in a design which is simple and economical to install (and repair or replace) using simple tools and which is more economical to produce and compact in form.
According -to the p.resent inven-tion there is provided a solderless connector ~or semi-rigid coaxial cable having an elongate annular outer conductor, a center conductor coaxial with the outer conductor and a dielectric material spacing the inner and outer conductors apart, the connector comprising a housing having an annular portion de:Eining a cylindrical circumferentially continuous bore adapted to encompass the outer conductor and a cylindrical circumferentially con-tinuous bushing defining a bore to engage the exterior of the annular portion, the bushing bore being smaller in diameter than the outer diameter of the annular portion to an extent whereby upon telescoping -3a-movement of the bushing over the annular portion a desired clrcumferential compression of the annular portion occurs to produce desired radial inward deformation of the annular portion, the housing bore having, integral -therewith, means adapted to engage the 05 outer conductor upon the circumferential compression to provide a direct mechanical and electrical interface between the housing and the outer conductor.
The invention will now be described, by way of example, with reference to the accompanying drawings in which:
Figure 1 is a sectional elevation of a ~;~
_ a, solderless connector in the form of a straight cable plug ready for installation on the prepared end of a semi-rigid coaxial cable, only the portion of the cable on one side of the center line of the connector being shown;
Figure 2 is an enlarged fragmentary view of the connector illustrated in ~igure 1 showing in greater detail the arrangements for mounting the connector and the cable when in position preparatory to such mounting, Figure 3 is a fragmentary view similar to that of Figure 2 with the connector mounted on the cable;
Figure 4 is a sectional elevation of a solderless straight cable jack utilizing the mounting arrangements of the connector illustrated in Figures 1, 2 and 3; and Figure 5 is a solderless straight cable plug utilizing the mounting arrangement of the connector illustrated in Figures 1, 2 and 3.
With reference first to Figure 1, an annular monolithic housirlg 1 defines a cylindrical bore 2 of a diameter to accommodate in close spaced relationship the outside surface of a semi-rigid coaxial cable 3. This cable comprises an annular elongate copper outer conductor 4 concentrically within which extends a copper center conductor 5 with a dielectric material 6 disposed therebetween. A coupling nut 7 is mounted on the housing for rotation relative thereto about central axis 8~ The coupling nut has an inwardly ex-tending annular flange 9 arranged to cooperate with an outwardly extending annular flange lO on the exterior of the housing 1 to permit the mechanical and electrical interconnection of the l12~6~
connector cable assembly with, for example, a corresporlding cable jack such as that illustrated in Fiyure 4, upon the engayement of the female thread 11 of the nut 7 with the corresponding male thread 12 (see Figure ~) of that jack.
A hushing 13 is pre-loaded onto the rear end 1~ of the housing 1 prior to the assembly of the connector onto the cable 3. The preloading of the bushing 13 serves to provide for ease of handl.ing and holds the nut 7 captive.
With reference now to both Figures 1 and 2, the housing 1 has a cylindrical counterbore 15 concentric with the axis 8 at its rear end 1~ with a plurality of elongate teeth 1~ projecting inwardly from the cylindrical surface of the counterbore toward the axis ~. The tips of these teeth define an imaginary cylindrical surface of the same diameter, prior to the mounting of the connector of a cable 3, as and coaxial with the bore 20 Four equally spaced apart rows of teeth are provided. These rows each comprise four teeth, equally spaced apart round the circumference oE
the counterbore 15, lying in a plane normal to the axis 8. ~he teeth are of generally symmetrical triangular cross-section and have a length, around said circumference, approximately equal to the space, around said circumference, hetween adjacent teeth.
While the exemplary form of connector has been described with a specific arrangement of teeth, it will be appreciated that other arrangements and shapes of teeth, for example, different numbers of rows, different arrangements of teeth from row to row, elonyate teeth some of which extend parallel 6~
to the axis 8, teeth forming individual closed circles (with or without holes, extending radially throuyh said rear end 14 therein), teeth of asymmetric cross-section to asymmetrically resist longitudinal and/or torsional forces applied to the connector relative to thè cable or of conical or frusto-conical form may be utilized without departing on the concept of the present invention.
The mounting oE the connector onto the cable 3 is achieved by sliding the connector onto thè
cable into the position shown in Figure 1 with the bore 2 and the tips of the teeth 16 in close pro~imity to the outer surface of the outer conductor 4. The housilly 1 and bushing 13 are then telescoped together by the application of a telescoping force longitudinally of the axis 8 as may be applied by a hand operated tool adapted for this purpose. This telescoping action cornpresses the rear end 14 of the housing circumferentially, and thereby moves the teeth 16 radially inwardly, by virtue of the interaction of cylindrical bore 17 of bushing 13 with the cylindrical outer surface 18 of the rear end 14 of the housing 1, the bore 17 being of a smaller diameter than the surface 18. The radial thickness and outer diameter of the rear end 14 is chosen relative to the material and dimensions of the bushing 13 to provide a desired movement of teeth 16 radially inwardly toward axis 8. Interacting frusto-conical surfaces 19 on the bushing 13 and the rear end 14 disposed at appropriate angle to axis 8 to facilitate initial telescoping action to bring the bore 17 into initial contact with the surface 18. The telescoping action is continued until the housing 1 and bushing 13 occupy the 9~
-- 7 ~
position illustrated in Figure 3 with the bushing 13 abutting the outwardly extending annular flange lO of the housin~.
The radially inward deformation of the rear end causes the surface of counterbore 15 to engage and the teeth 16 to engage and deform the surface of the conductor 4 to provide a positive mechanical and electrical interface therewith.
The circumferential extension of the teeth provides substantial annular communication between the ho~sing and the outer conductor thereby to strongly resist the longitudinal movement of the housing on the cable ~pon the application of axial forces on the connector relative to the cable.
The circumferentially extending gaps between the teeth serve to resist torsional forces attempting to twist the connector around axis 8 about the cable.
With the connector of the present invention, the integrity of the mechanical and electrical interconnection between the outer conductor of the cable and the connector depends upon only a single interface, namely the interface between the teeth 16 and rear end 14 with the outer conductor and the cable. The superiority oE such an arrangement over the prior art connector described above with its reliance upon two serially disposed interfaces fvr mechanical and electrical mounting integrity, with the resulting double chance of failure will be readily apparent to one skilled in the art.
With reference now to Figure 4, there is illustrated a straight cable jack 21 having mounting arrangements similar to those described with reference to Figures l, 2 and 3, for the mounting of the jack onto a semi-rigid coaxial 6~
cabLe. In this arrangeinent the housing 22 has a rear end 14 similar to that illustrated in Figures 1., 2 and 3 on which is preloaded a bushing 13. In addition housing 22 supports opposed electrically interconnected contacts 23 by means of a dielectric 24, one adjacent the rear end 14 for engagement with the center conductor of a cable upon which the jack 21 is mounted. The forward end 25 has a male thread 2~ to facilitate connection with a pl.ug such as described with reference to Figuxes 1, 2 and 3, by means of engagement of the coupling nut 7 with the forward end 25; the center conductor of the cable upon which that plug is mounted engaging the other female contact 23 which is located adjacent the forward end 25.
The annular face terminating the forward end 25 is adapted when the jack is connected to a plug as shown in Figures 1, 2 and 3, to sealingly engage an annular gasket 27 captively mounted in an annular groove formed in an exterior surface of housing 1 adjacent the outwardly extending flange lQ, within the coupling nut 7.
Figure 5 illustrates a cable plug having mounting arrangements similar to those described with reference to Figures 1, 2 and 3 with the housing of this plug supporting electrically interconnected female and male contacts by means of a dielectric, the female contact being adapted to communicate with the center conductor of a cable on which the cable plug is mounted and with the male contact projecting into the interior of a coupling nut for engayement with a cable jack such as illustrated in Figure 4.
While the present invention has not been described with reference to the use of any particular materials, suitable materials will be apparent to a man skilled in the ar~, including constructing the electrically conductive components from any suitable material including stainless steel and that these components may be be gold plated.
r
SOLDERI,E:SS CONNIiJ('TORS FOR 5~MI-RIGID COAXIAL CABLE
The present invention ~elates to solderless connectors suitable for use with semi-rigid coaxial cable.
Semi-rigid coaxial cable, which is used, particularly, where a high degree of RF shielding is required, comprises a solid tubular outer conductor, usually of copper, centrally disposed ithin which is an inner conductor spaced from the outer conductor by a dielectric material.
Direct solder attachment of connectors to semi-rigid cable has, until now, been the only reliable arrangemerlt where a connector is required to function reliably in extreme environmental conditions which may include high vibration levels and high continuous/oscillating mechanical and thermal stress.
Such direct solder attachment of the connector body to the copper sheath of a semi-rigid coaxial cable has always been a production problem because of the experience and skills that have to be developed to maintain an efficient operation. A
narrow time/temperature range is needed to promote solder flow while minimizing undesirable heating effects on the confined cable dielectric. In addition, precision equipment is necessary for repeat~ble connector positioning. In spite of these difficulties, mechanical cable/connector junctions have not gained wide acceptance. Bulk, cost, lack of permanency, and to some extent, poor performance havé been against mechanical connectors. Special cable preparation has led to only limited acceptance of a connector design utilizing a crimp to preknurled cable arrangement. Nevertheless, a mechanical concept, lIL;Z~6~
with designed-in control of the assembly is desirable for consistent performance and for improved productivity.
Although solderless connectors are well-known and have been widely used in many applications for flexible and semi-rigid cable assemblies, there useful application has been limited to situations in which vibration and stress are not problems.
A basic requirement in providing a solderless connector for use in such extreme environment conditions is that of providing mechanical and electrical interconnection of high integrity between the outer con~1uctor and the connector itself. A recent attempt at providing such a connector is embodied in AMP Incorporated's SMA
coaxial connector which is described and illustrated on Pages 261 and 262 of AMP IncO's catalog entitled "AMP Guide to RF Connectors,"
Catalog 80-570 published 7/82.
The AMP connector for semi-rigid coaxial cables utilizes a ferrule or gripper ring which interconnects the main housing of the connector with the outer conductor of the semi-rigid cable.
The gripper ring in this design lncludes a plurality of teeth extending from the annular end of the ring axially of the connector and arranged to be deformed or bent radially inwardly to engage the outward conductor of the cable upon the application of a force to telescope the ferrule and housing together. By this telescoping action the teeth are bent inwardly to engage the outer conductor while the main housing achieves an interference fit with the ferrule thereby to retain the connector on the cable. In this design the mechanical and electrical integrity of the 3~2~6~
-3 ~
mounting of the connector on the cable involves, firstly, the integrity of the connection between the ferrule and the outer conductor of the cable and, secondly, the interference fit between the ferrule and the housing. Failure of either o:E these will destroy 05 the integrity of -the mounting oE the connector on the cable. In particular, it has been found that the interference fit between the ferrule and -the housing is subject to failure upon the application of a longitudinally acting force on the connec-tor relative to the cable which is of a magnitude insuEficient to damage the cable or the connection of the ferrule with that cable.
It is an object of the present invention to provide an improved solderless connector for semi-rigid coax.ial cable which provides high mechanical and electrical integrity under extreme environmental conditions in a design which is simple and economical to install (and repair or replace) using simple tools and which is more economical to produce and compact in form.
According -to the p.resent inven-tion there is provided a solderless connector ~or semi-rigid coaxial cable having an elongate annular outer conductor, a center conductor coaxial with the outer conductor and a dielectric material spacing the inner and outer conductors apart, the connector comprising a housing having an annular portion de:Eining a cylindrical circumferentially continuous bore adapted to encompass the outer conductor and a cylindrical circumferentially con-tinuous bushing defining a bore to engage the exterior of the annular portion, the bushing bore being smaller in diameter than the outer diameter of the annular portion to an extent whereby upon telescoping -3a-movement of the bushing over the annular portion a desired clrcumferential compression of the annular portion occurs to produce desired radial inward deformation of the annular portion, the housing bore having, integral -therewith, means adapted to engage the 05 outer conductor upon the circumferential compression to provide a direct mechanical and electrical interface between the housing and the outer conductor.
The invention will now be described, by way of example, with reference to the accompanying drawings in which:
Figure 1 is a sectional elevation of a ~;~
_ a, solderless connector in the form of a straight cable plug ready for installation on the prepared end of a semi-rigid coaxial cable, only the portion of the cable on one side of the center line of the connector being shown;
Figure 2 is an enlarged fragmentary view of the connector illustrated in ~igure 1 showing in greater detail the arrangements for mounting the connector and the cable when in position preparatory to such mounting, Figure 3 is a fragmentary view similar to that of Figure 2 with the connector mounted on the cable;
Figure 4 is a sectional elevation of a solderless straight cable jack utilizing the mounting arrangements of the connector illustrated in Figures 1, 2 and 3; and Figure 5 is a solderless straight cable plug utilizing the mounting arrangement of the connector illustrated in Figures 1, 2 and 3.
With reference first to Figure 1, an annular monolithic housirlg 1 defines a cylindrical bore 2 of a diameter to accommodate in close spaced relationship the outside surface of a semi-rigid coaxial cable 3. This cable comprises an annular elongate copper outer conductor 4 concentrically within which extends a copper center conductor 5 with a dielectric material 6 disposed therebetween. A coupling nut 7 is mounted on the housing for rotation relative thereto about central axis 8~ The coupling nut has an inwardly ex-tending annular flange 9 arranged to cooperate with an outwardly extending annular flange lO on the exterior of the housing 1 to permit the mechanical and electrical interconnection of the l12~6~
connector cable assembly with, for example, a corresporlding cable jack such as that illustrated in Fiyure 4, upon the engayement of the female thread 11 of the nut 7 with the corresponding male thread 12 (see Figure ~) of that jack.
A hushing 13 is pre-loaded onto the rear end 1~ of the housing 1 prior to the assembly of the connector onto the cable 3. The preloading of the bushing 13 serves to provide for ease of handl.ing and holds the nut 7 captive.
With reference now to both Figures 1 and 2, the housing 1 has a cylindrical counterbore 15 concentric with the axis 8 at its rear end 1~ with a plurality of elongate teeth 1~ projecting inwardly from the cylindrical surface of the counterbore toward the axis ~. The tips of these teeth define an imaginary cylindrical surface of the same diameter, prior to the mounting of the connector of a cable 3, as and coaxial with the bore 20 Four equally spaced apart rows of teeth are provided. These rows each comprise four teeth, equally spaced apart round the circumference oE
the counterbore 15, lying in a plane normal to the axis 8. ~he teeth are of generally symmetrical triangular cross-section and have a length, around said circumference, approximately equal to the space, around said circumference, hetween adjacent teeth.
While the exemplary form of connector has been described with a specific arrangement of teeth, it will be appreciated that other arrangements and shapes of teeth, for example, different numbers of rows, different arrangements of teeth from row to row, elonyate teeth some of which extend parallel 6~
to the axis 8, teeth forming individual closed circles (with or without holes, extending radially throuyh said rear end 14 therein), teeth of asymmetric cross-section to asymmetrically resist longitudinal and/or torsional forces applied to the connector relative to thè cable or of conical or frusto-conical form may be utilized without departing on the concept of the present invention.
The mounting oE the connector onto the cable 3 is achieved by sliding the connector onto thè
cable into the position shown in Figure 1 with the bore 2 and the tips of the teeth 16 in close pro~imity to the outer surface of the outer conductor 4. The housilly 1 and bushing 13 are then telescoped together by the application of a telescoping force longitudinally of the axis 8 as may be applied by a hand operated tool adapted for this purpose. This telescoping action cornpresses the rear end 14 of the housing circumferentially, and thereby moves the teeth 16 radially inwardly, by virtue of the interaction of cylindrical bore 17 of bushing 13 with the cylindrical outer surface 18 of the rear end 14 of the housing 1, the bore 17 being of a smaller diameter than the surface 18. The radial thickness and outer diameter of the rear end 14 is chosen relative to the material and dimensions of the bushing 13 to provide a desired movement of teeth 16 radially inwardly toward axis 8. Interacting frusto-conical surfaces 19 on the bushing 13 and the rear end 14 disposed at appropriate angle to axis 8 to facilitate initial telescoping action to bring the bore 17 into initial contact with the surface 18. The telescoping action is continued until the housing 1 and bushing 13 occupy the 9~
-- 7 ~
position illustrated in Figure 3 with the bushing 13 abutting the outwardly extending annular flange lO of the housin~.
The radially inward deformation of the rear end causes the surface of counterbore 15 to engage and the teeth 16 to engage and deform the surface of the conductor 4 to provide a positive mechanical and electrical interface therewith.
The circumferential extension of the teeth provides substantial annular communication between the ho~sing and the outer conductor thereby to strongly resist the longitudinal movement of the housing on the cable ~pon the application of axial forces on the connector relative to the cable.
The circumferentially extending gaps between the teeth serve to resist torsional forces attempting to twist the connector around axis 8 about the cable.
With the connector of the present invention, the integrity of the mechanical and electrical interconnection between the outer conductor of the cable and the connector depends upon only a single interface, namely the interface between the teeth 16 and rear end 14 with the outer conductor and the cable. The superiority oE such an arrangement over the prior art connector described above with its reliance upon two serially disposed interfaces fvr mechanical and electrical mounting integrity, with the resulting double chance of failure will be readily apparent to one skilled in the art.
With reference now to Figure 4, there is illustrated a straight cable jack 21 having mounting arrangements similar to those described with reference to Figures l, 2 and 3, for the mounting of the jack onto a semi-rigid coaxial 6~
cabLe. In this arrangeinent the housing 22 has a rear end 14 similar to that illustrated in Figures 1., 2 and 3 on which is preloaded a bushing 13. In addition housing 22 supports opposed electrically interconnected contacts 23 by means of a dielectric 24, one adjacent the rear end 14 for engagement with the center conductor of a cable upon which the jack 21 is mounted. The forward end 25 has a male thread 2~ to facilitate connection with a pl.ug such as described with reference to Figuxes 1, 2 and 3, by means of engagement of the coupling nut 7 with the forward end 25; the center conductor of the cable upon which that plug is mounted engaging the other female contact 23 which is located adjacent the forward end 25.
The annular face terminating the forward end 25 is adapted when the jack is connected to a plug as shown in Figures 1, 2 and 3, to sealingly engage an annular gasket 27 captively mounted in an annular groove formed in an exterior surface of housing 1 adjacent the outwardly extending flange lQ, within the coupling nut 7.
Figure 5 illustrates a cable plug having mounting arrangements similar to those described with reference to Figures 1, 2 and 3 with the housing of this plug supporting electrically interconnected female and male contacts by means of a dielectric, the female contact being adapted to communicate with the center conductor of a cable on which the cable plug is mounted and with the male contact projecting into the interior of a coupling nut for engayement with a cable jack such as illustrated in Figure 4.
While the present invention has not been described with reference to the use of any particular materials, suitable materials will be apparent to a man skilled in the ar~, including constructing the electrically conductive components from any suitable material including stainless steel and that these components may be be gold plated.
r
Claims (12)
1. A solderless connector for semi-rigid coaxial cable having an elongate annular outer conductor, a center conductor coaxial with said outer conductor and a dielectric material spacing the inner and outer conductors apart, the connector comprising a housing having an annular portion defining a cylindrical circumferentially continuous bore adapted to encompass said outer conductor and a cylindrical circumferentially continuous bushing defining a bore to engage the exterior of the annular portion, the bushing bore being smaller in diameter than the outer diameter of said annular portion to an extent whereby upon telescoping movement of said bushing over said annular portion a desired circumferential compression of said annular portion occurs to produce desired radial inward deformation of said annular portion, said housing bore having, integral therewith, means adapted to engage said outer conductor upon said circumferential compression to provide a direct mechanical and electrical interface between said housing and said outer conductor.
2. A connector according to claim 1 wherein said bushing and said annular portion are provided with cooperating frusto-conical surfaces angled to facilitate initiation of telescoping movement of the bushing over said annular portion upon the application of longitudinally acting forces to produce said telescoping movement.
3. A connector according to claim 2 wherein said housing bore is cylindrical and said means comprise a plurality of radially inwardly extending teeth.
4. A connector according to claim 3 wherein said teeth are elongate teeth extending and spaced apart round the circumference on the cylindrical surface of said housing bore.
5. A connector according to claim 3 wherein said teeth are elongate and aligned to form a row of teeth, extending from the cylindrical surface, disposed circumferentially about said housing bore.
6. A connector according to claim 5 comprising a plurality of said rows of teeth spaced apart longitudinally of the axis of the housing bore.
7. A connector according to claim 4 wherein the circumferential extension of each tooth is approximately equal to the circumferential spacing between adjacent teeth.
8. A connector according to claim 1 wherein said bushing is adapted for pre-loading engagement with said annular portion.
9. A connector according to claim 1 in the form of a cable plug further comprising a coupling nut captively mounted on said housing for rotation relative thereto.
10. A connector according to claim 1 in the form of a cable jack wherein said housing defines a forward end carrying a male thread and supports opposed electrically interconnected female contacts within the housing, by means of a dielectric material, to provide electrical interconnection between a cable to which a cable is mounted and a cooperating cable plug.
11. A connector according to claim 1 in which said housing defines an abutment to positively limit telescoping motion of the bushing over said annular portion.
12. A connector according to claim 11 wherein said connector is a cable plug further comprising a coupling nut disposed for rotation about said housing and held captive between said abutment on said housing and a further abutment surface on said bushing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US46003883A | 1983-01-21 | 1983-01-21 | |
| US460,038 | 1983-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1216910A true CA1216910A (en) | 1987-01-20 |
Family
ID=23827172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000440830A Expired CA1216910A (en) | 1983-01-21 | 1983-11-09 | Solderless connectors for semi-rigid coaxial cable |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0116760A1 (en) |
| JP (1) | JPS59134577A (en) |
| CA (1) | CA1216910A (en) |
| IL (1) | IL70154A0 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4668043A (en) * | 1985-01-16 | 1987-05-26 | M/A-Com Omni Spectra, Inc. | Solderless connectors for semi-rigid coaxial cable |
| GB2264202A (en) * | 1992-02-14 | 1993-08-18 | Itt Ind Ltd | Clamping contact onto conductor |
| CN102013938B (en) | 2009-12-07 | 2012-07-04 | 华为技术有限公司 | Method and device for transmitting uplink control information (UCI) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3077513A (en) * | 1959-08-28 | 1963-02-12 | Microdot Inc | Coaxial cable connector |
| US4070751A (en) * | 1977-01-12 | 1978-01-31 | Amp Incorporated | Method of making a coaxial connector |
| US4400050A (en) * | 1981-05-18 | 1983-08-23 | Gilbert Engineering Co., Inc. | Fitting for coaxial cable |
-
1983
- 1983-11-07 IL IL70154A patent/IL70154A0/en unknown
- 1983-11-09 CA CA000440830A patent/CA1216910A/en not_active Expired
- 1983-11-30 EP EP83307279A patent/EP0116760A1/en not_active Ceased
- 1983-12-01 JP JP58225546A patent/JPS59134577A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0116760A1 (en) | 1984-08-29 |
| JPS59134577A (en) | 1984-08-02 |
| IL70154A0 (en) | 1984-02-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |