Coaxial connectors

Abstract

The invention relates to a coaxial connector (10) for connection to a mating connector and for connecting a coaxial cable (11), which has a cable dielectric (12) through which a coaxial cable inner conductor (13) extends and is surrounded by a coaxial cable outer conductor (14) and a coaxial cable sheath (15), wherein the coaxial connector (10) has a connector unit (20) and a cable receiving unit (90), wherein the connector unit (20) has a compression element (80) for receiving and / or contacting the front end region of the coaxial cable outer conductor (14) and a connector insulating housing (60) through which a connector inner conductor (70) extends and is surrounded by a connector outer conductor housing (40), wherein the cable receiving unit (90) has a cable receiving unit (100) and a slotted sleeve element (130) with a radially outwardly projecting deformation element (139),and wherein a cable receiving area (120) and a sleeve element receiving area (110) with a radially inwardly projecting deformation block (115) are arranged in the cable receptacle (100). For PIM-stable contact of the coaxial cable outer conductor (14) to the coaxial connector outer conductor housing (40), it is proposed that an annular free space (E) be formed between the second end-face boundary (132) of the sleeve element (130) and the second cover surface (82) of the compression element (80) facing it in the axial direction.

Description

The invention relates to a coaxial connector for connection to a mating connector and for connection of a coaxial cable to a connector unit and a cable receiving unit according to the preamble of claim 1.Coaxial connectors of the aforementioned type are used, for example, in base stations in mobile radio technology for transmitting high-frequency electrical signals and can be detachably connected as a component of an electrical transmission path to a mating connector of complementary design in order to produce an electrical connection between a first and a second coaxial cable or between a coaxial cable and an electrical assembly arranged on a printed circuit board.Coaxial cables of the type in question to be connected to the coaxial connector mentioned above have an insulating cable dielectric which is penetrated concentrically by a coaxial cable inner conductor and surrounded by a coaxial cable outer conductor. In the circumferential direction, this arrangement is sheathed by a coaxial cable sheath.With regard to the coaxial cable outer conductors, different designs are known to the person skilled in the art. To increase the mechanical stability of the coaxial cable, use is made, for example, of so-called corrugated tube jacket outer conductors in which a wave-shaped profile surface is discharged along a helical line or along a helix as a guide curve. Coaxial cable outer conductors in the form of a braided shield are known for lower stability requirements.For optimum transmission of alternating voltage signals of high frequency, in particular in the gigahertz range, it is of fundamental importance that passive intermodulation (PIM) as far as possible does not occur. This requires a targeted avoidance of mutual interference by electrical signals which are transmitted at different frequencies. A suitable structural configuration of the coaxial connector has a substantial influence with respect to this requirement, while avoiding undefined and / or alternating contact points of the coaxial connector outer conductor housing with respect to the coaxial cable outer conductor in order to achieve a mechanically and electrically stable connection, in particular also under external mechanical loads. The connection of the coaxial cable to the coaxial connector should again be possible simply and without the use of special tools with little work effort.In order to improve the PIM stability of coaxial connectors of the type in question, it is also necessary to effectively prevent the generation of abrasion and chips associated therewith during the production of the contacting between the coaxial cable outer conductor and the coaxial connector outer conductor housing.EP 1 170 833 A1 proposes a coaxial connector of the generic type for connection to a mating connector and for connection of a coaxial cable to a connector unit 1-9 and a cable receiving unit 10-14. The connector unit has a connector insulation housing 6, which is concentrically penetrated by a connector inner conductor 1 and surrounded in the circumferential direction by a connector outer conductor housing 2, 3. The cable receiving unit has a cable receiving means 12 and a sleeve element 11 with a plurality of longitudinal slots and an internal thread 22. A radially outwardly projecting deformation element 18 is arranged on the sleeve element 11. In the cable receptacle 12, a cable receiving region for receiving the coaxial cable to be connected and a sleeve element receiving region are provided. A radially inwardly projecting deformation block is arranged in the sleeve element receiving region, which deformation block brings about a radially inwardly directed deformation of the sleeve element 11 from a position releasing the coaxial cable outer conductor into a position contacting the coaxial connector outer conductor during the movement of the sleeve element 18 into the sleeve element receiving region of the cable receiver 12. The formation of the sleeve element 11 with a plurality of longitudinal slots connected at the end leads to the formation of a plurality of clamping wings which are connected to the ring 30. The clamping of the coaxial cable is thus limited to the geometry furthest away from the connection of the clamping lugs in the axial direction. Depending on the tolerances of the coaxial cable outer conductor and the sleeve element 11, this results in different contact points and thus different signal paths from the coaxial cable outer conductor to the plug connector outer conductor.EP 0 975 051 A1 discloses a further coaxial connector of the generic type for connecting a coaxial cable, consisting of a connector unit 1 and a cable receiving unit 2. the connector unit 1 has an insulating housing which is penetrated concentrically by a connector inner conductor and surrounded by an outer conductor housing. A radially inwardly projecting deformation block on the sleeve part 6 brings about, in the event of an axial displacement of the cable receiving unit 2 relative to the connector unit 1, a radially inwardly acting deformation of the slotted sleeve element 4 arranged in the cable receiving unit 2 and thus a contacting of the sleeve element 4 with the coaxial cable outer conductor. At the same time, the cable jacket is clamped by the end-face end region which projects radially inward and faces the coaxial cable to be connected. The proposed dual function of the sleeve member 6 limits the use of the proposed coaxial connector to a small bandwidth of the connectable coaxial cables with respect to the external dimensions. In addition, the clamping of the coaxial cable is limited to a small range in the axial direction as in the first example.EP 3 329 554 B1 discloses a coaxial connector 20 of the generic type for a coaxial cable 10, wherein the coaxial cable comprises a spirally corrugated coaxial cable outer conductor 11 and an insulating medium 13 through which a coaxial cable inner conductor 12 passes concentrically. The coaxial connector includes a connector unit 21 and a cable take-up unit 22 which are detachably connectable to each other. The connector unit 21 is composed, according to FIG. 3, of a connector insulating housing 35 which is concentrically penetrated by a connector inner conductor 34 and is surrounded in the circumferential direction by a connector outer conductor housing 30. The cable receiving unit 22 has a cable receiving means in the form of a lock nut 70 and a sleeve element 60, the end region of which facing the coaxial cable 10 to be connected has a plurality of slots 68, and an expansion ring 50 which engages in the sleeve element 60 in the axial direction, and a helical spring 56 which is arranged between the expansion ring 50 and the sleeve element 60. In order to make the coaxial connector 20 fit the coaxial cable 10, the prepared coaxial cable 10 is first screwed through the lock nut 70 into the sleeve element 60 of the cable receiving unit 22 until it bears against the expansion ring 50. The subsequent screwing of the cable receiving unit 22 with the coaxial cable received therein into the connector unit 21 first brings about an expansion of the coaxial cable outer conductor 11 and then a clamping and squeezing of the coaxial cable outer conductor 11 between the slopes 54, 67 of the expansion ring 50 and the sleeve element 60. The disadvantage of this proposal is the high number of individual parts with regard to the expected costs. In order to make the coaxial cable 10 to the coaxial connector 20, the user is disadvantageously provided with two assemblies which are still separate from one another and are in the form of a cable receiving unit 22 and a connector unit 21, which he must join in a further assembly step after the coaxial cable 10 has been connected to the cable receiving unit 22. Another disadvantage in this proposal is the restriction to coaxial cables with spirally corrugated coaxial cable outer conductors.DE 10 2004 004 567 B3 discloses a further coaxial connector of the generic type which has a connector unit comprising a connector insulation housing through which a connector inner conductor 2 passes concentrically and is surrounded in the circumferential direction by an outer conductor housing 1. The cable receiving unit detachably connected to the connector unit consists of a threaded sleeve 4 in which a clamping ring 6 and a profiled seal 7 are arranged spaced apart axially from one another, wherein the clamping ring 6 arranged in the annular free space 4.1 has a continuous slot 6.1 in the axial direction, which slot enables a deformation of the clamping ring 6 in the radial direction. For the assembly of the coaxial cable, which has a cable dielectric 51, is penetrated concentrically by a tubular coaxial cable inner conductor 50 and is surrounded by a corrugated coaxial cable outer conductor 52, the user is advantageously only available an assembly in which the above-mentioned connector unit and the cable receiving unit are detachably connected to one another in a pre-assembly position. However, the proposal is limited by the disclosed embodiment of the clamping ring 6 to coaxial cables with a ring-corrugated outer conductor. Coaxial cable outer conductors whose wavy profile follows a helical line cannot be operated.It is therefore the object of the present invention to further develop a coaxial connector of the generic type in such a way that it enables a secure, PIM-stable and defined contacting of differently shaped coaxial cable outer conductors to the coaxial connector outer conductor housing and a simple, cost-effective assembly of the coaxial cable to the coaxial connector.This object is achieved in a coaxial connector of the generic type according to the invention with the characterizing features of claim 1.The arrangement of an annular free space between the compression element of the connector unit and the end face of the sleeve element facing the connector unit ensures that the end face end region of the connected coaxial cable outer conductor always abuts the compression element, deforms it / or penetrates partially into the compression element. This has proven to be advantageous in particular with regard to undesired electrical connections from the coaxial cable outer conductor to the outer conductor housing of the connector unit. For example, burrs caused by the short-circuiting of the coaxial cable outer conductor cannot connect to the outer conductor housing of the connector unit.In a preferred embodiment according to the invention, the compression element in the connector unit comprises an elastic, electrically insulating material.In a further advantageous embodiment according to the invention, the outer diameter of the radially outwardly projecting deformation element on the sleeve element and the inner diameter of the radially inwardly projecting deformation block in the sleeve element receiving region of the cable receiving device have an identical value. This allows uniform deformation of the sleeve member over its entire length.In a particularly advantageous embodiment according to the invention, the radially outwardly projecting deformation element is arranged on the end-face end region of the sleeve element which faces the connector unit. This allows a maximum axial distance from the radially inwardly projecting deformation block in the sleeve element receiving region of the cable receiving unit. The stability of the contacting of the sleeve element with respect to the coaxial connector outer conductor increases with the distance between the deformation element and the deformation block with respect to one another in the axial direction.In an advantageous embodiment according to the invention, the sleeve element receiving region of the cable receptacle has a sleeve element stop surface for bearing against the complementary end face of the sleeve element of the cable receiving unit. This enables defined and repeatable connections of the coaxial cable to the coaxial connector.The design of the coaxial connector in a particularly advantageous embodiment as a pre-assembled assembly of the connector unit and the cable receiving unit, which are detachably connectable, proves to be advantageous with regard to user-friendly assembly.In a preferred use of a coaxial connector according to the invention with a connected coaxial cable, which has a cable dielectric through which a coaxial cable inner conductor passes and is surrounded in the circumferential direction by a coaxial cable outer conductor and a coaxial cable jacket, the end-face end region of the coaxial cable outer conductor engages at least partially in the compression element or deforms it.In an advantageous embodiment, the method for connecting the coaxial cable to a coaxial connector according to the invention has the following assembly steps:preparing the coaxial cable to be connected by exposing the coaxial cable inner conductor and the coaxial connector outer conductor in a stepped manner at the end-face end region of the coaxial cable, and removing the coaxial cable jacket over a defined lengthproviding the pre-assembled coaxial connector, wherein the sleeve element assumes a position releasing the coaxial cable outer conductorinserting the prepared end-side end region of the coaxial cable into the cable receiving unit and through until the end-side end region of the coaxial cable outer conductor abuts the compression element of the connector unitan axial displacement of the cable receptacle relative to the connector outer conductor housing as far as the end-side delimitation of the sleeve element facing the coaxial cable to be connected on the complementary sleeve element contact surface of the cable receptacle of the cable receptacle unit brings about a radial deformation of the sleeve element from a position releasing the coaxial cable outer conductor into a position contacting the coaxial cable outer conductorThe following description of advantageous embodiments of the invention serves to explain it in more detail in conjunction with the drawing.The following are shown: FIG. 1 : a perspective view of the coaxial connector in a first advantageous embodiment with a connected coaxial cable; FIG. 2 : shows a perspective view of the coaxial connector from FIG. 1 in the manner of an exploded drawing; FIG. 3 : a perspective sectional view of the connector unit of the coaxial connector from FIG. 1 ; FIG. 4 : a perspective view of the connector unit from FIG. 3 ; FIG. 5 : a sectional view of the connector unit from FIG. 3 ; FIG. 6 : an enlarged view of detail X from FIG. 5 ; FIG. 7 : a perspective view of the connector inner conductor of the connector unit from FIG. 4 ; FIG. 8 : a sectional view of the connector inner conductor of the connector unit from FIG. 7 ; FIG. 9 : shows a perspective view of the cable receiving unit from FIG. 1 in the manner of an exploded drawing; FIG. 10 : a sectional view of the cable receiving unit from FIG. 9 ; FIG. 11 : a perspective view of the cable receiving unit from FIG. 2 ; FIG. 12 : a sectional view of the cable receiving unit from FIG. 11 ; FIG. 13 is an enlarged view of detail Y from FIG. 12 ; FIG. 14 is a sectional view of the coaxial connector of FIG. 1 with the coaxial cable partially inserted; FIG. 15 : an enlarged view of detail Z from FIG. 14 ; FIG. 16 is a sectional view of the coaxial connector of FIG. 14 with the coaxial cable fully inserted; FIG. 17 : an enlarged view of detail R from FIG. 16 ; FIG. 18 is a sectional view of the coaxial connector from FIG. 16 with the coaxial cable fully inserted and the cable receiving unit fully mounted; FIG. 19 is an enlarged view of detail T from FIG. 18 ;In FIGS. 1 to 19, a first advantageous embodiment of a coaxial connector according to the invention is schematically illustrated and denoted overall by the reference numeral 10. Referring to FIGS. 1 and 2, the coaxial connector 10 to be connected to a coaxial cable 11 includes a connector unit 20 and a cable receiving unit 90.According to FIG. 2, the coaxial cable 11 has a cable dielectric 12 which is concentrically penetrated by a coaxial cable inner conductor 13 and concentrically surrounded by a coaxial cable outer conductor 14. In the circumferential direction, a coaxial cable jacket 15 surrounds the coaxial cable outer conductor 14.FIGS. 3-8 disclose the connector assembly 20 having a connector insulative housing 60 concentrically traversed by a connector inner conductor 70 and circumferentially surrounded by a connector outer conductor housing 40. On its end region of the connector unit 20 facing the mating connector, a union nut 30 is arranged which surrounds the connector outer conductor housing 40 in the circumferential direction and is mounted rotatably with respect to the connector outer conductor housing 40.In the interior of the connector outer conductor housing 40, a compression element 80 is positioned concentrically with the coaxial connector 10 at its end region facing the coaxial cable 11 to be connected.According to FIG. 5, the union nut 30 extends between the end faces 31 and 32 as a rotationally symmetrical sleeve with an external hexagon 33. To secure the union nut 30 to the connector outer conductor housing 40 in the axial direction, a securing element 37 having a rectangular cross section 38 and a slot 39 which extends through it in the axial direction is provided, which engages in recesses 35, 44 which are complementary to one another in a manner familiar to the person skilled in the art.The union nut 30 can be designed as a turned part and can be manufactured from an electrically conductive material, for example brass. Alternatively, the use of a plastic is also possible.The securing element can be manufactured, for example, from a spring steel wire.The connector outer conductor housing 40 extends as a rotationally symmetrical sleeve-shaped component between the end-side boundary surfaces 41, 42. The outer geometry of the connector outer conductor housing is substantially cylindrical and has a total of six flattened portions 43 arranged in the circumferential direction at its end region facing the coaxial cable 11 to be connected, which flattened portions can engage around the opening of a jaw wrench, for example. The outer cylindrical surface 45 at its end region facing the mating connector is dimensioned in such a way that an annular free space is produced in the radial direction outwards as far as the internal thread 34 of the union nut 30, into which the outer conductor housing of a mating connector can engage.The inner cavity of the connector outer conductor housing 40 extending over the entire length of the connector outer conductor housing 40 starts from the end face 41 as a cylindrical recess 46 for receiving a complementary mating connector as far as a stop face 47, and has a circumferential and radially inwardly projecting fastening projection 48 for fixing the connector insulating housing 60 in the cylindrical recess 46 of the connector outer conductor housing 40, which engages in the enclosing face 63 of the connector insulating housing 60 in a manner known to the person skilled in the art. This is clear in particular from FIG. 6. An opening bounded by the cylindrical surface 49 in the circumferential direction adjoins the aforementioned cylindrical recess 46 with a smaller diameter via a chamfer in the direction of the coaxial cable 11 to be connected, which then merges into a cone 50 for forming the bearing surface 51 for the bearing of the compression element 80 and which is adjoined by the cylindrical receiving opening 52 for receiving the compression element 80 in the axial direction. The cylindrical receiving opening 52 opens via a sleeve element stop surface 53 into a connector opening 54 of larger diameter with an internal thread 56 for receiving the cable receptacle 100 of the cable receiving unit 90 provided with a complementary external thread 106, and ends via an insertion chamfer 55 on the end surface 42 of the connector outer conductor housing 40.The connector outer conductor housing 40 can be designed as a turned part and can be manufactured from an electrically conductive material, for example brass.The connector insulation housing 60 arranged in the connector outer conductor housing 40 extends between the end-face boundaries 61, 62 in the form of a hollow cylinder with the enveloping surface 63 which is provided with a continuous slot 64 in the axial direction. The slot 64 allows mounting in the intended groove 75 of the connector inner conductor 70 by temporary widening of the connector insulation housing 60 so that the continuous concentrically arranged opening 65 surrounds the aforementioned groove 75 in the circumferential direction as shown in FIG. 5.The connector insulation housing 60 can be provided as a turned part and can be manufactured from an insulating plastic, for example POM.The compression element 80 arranged in the receiving opening 52 of the connector outer conductor housing 40 extends as a hollow cylinder with the enveloping surface 83 in the axial direction between a first covering surface 81 and a second covering surface 82, which is traversed over its entire length by the through opening 84, which opens at the end side via chamfers 85, 86 into the first and second covering surfaces 81, 82.The compression element 80 can be designed as a turned part and can be manufactured from an insulating plastic, for example POM.FIGS. 7 and 8 disclose the connector inner conductor 70 which extends as a substantially rotationally symmetrical component between the end-face boundaries 71, 72. At its end region facing the mating connector, a contact region 73 is arranged in fully cylindrical form, which leads into the boundary 71 via a tapering cone 74 and serves for contacting a contact element of complementary design of the mating connector. In the direction of the coaxial cable 11 to be connected, a groove 75 follows for the positive reception of the connector insulation housing 60. The connector inner conductor 70 has, on its end region facing the coaxial cable 11 to be connected, a total of four identical contact spring arms 77 spaced apart from one another in the circumferential direction, which surround a receiving opening 78 in the circumferential direction, which serves to receive the coaxial cable inner conductor 13 to be connected. Each contact spring arm 77 extending from the cylindrical element 76 in the direction of the coaxial cable 11 to be connected has a contact zone 79 for electrical contacting to the coaxial cable inner conductor 13, wherein the contacting takes place in a manner known to the person skilled in the art by widening the contact spring arms 77 by inserting the coaxial cable inner conductor 13 into the receiving opening 78. This is again clearly shown in FIG. 16.The connector inner conductor 70 can be provided as a turned part and can be manufactured from a conductive material, for example spring bronze. For optimum signal transmission, a galvanic surface, for example a gold plating, can additionally be provided.FIGS. 9 to 13 show the cable receiving unit 90, which is composed of the cable receiving means 100 and the sleeve element 130.According to FIGS. 9 and 10, the cable receptacle 100 extends in sleeve form between the end-face boundaries 101, 102. At its end region facing the coaxial cable 11 to be connected, a cylindrical element 104 is arranged, which is equipped with two mutually opposite flattened regions 103, which can be engaged around by the complementary opening of a jaw wrench. At its end region facing the connector unit 20, an external thread 106 is arranged on the cylindrical external geometry 105, which external thread makes it possible to connect the cable receiving unit 90 to the complementary internal thread 56 of the connector external conductor housing 40 of the connector unit 20.The interior of the cable receptacle 100 has a sleeve element receiving region 110 which extends in the axial direction between the end-face boundary 101 and the sleeve element contact surface 111, and a cable receiving region 120 which extends between the end-face boundary 102 and the cable contact 122 and is surrounded in the circumferential direction by the cable receiving sleeve 121.Between the sleeve element receiving region 110 and the cable receiving region 120, a passage region 108 is arranged, which is bounded in the circumferential direction by the cylindrical enveloping surface 109 and establishes a connection between the sleeve element receiving region 110 and the cable receiving region 120.In order to ensure the deformation function of the sleeve element 130 to be introduced into the cable receptacle 100, the sleeve element receiving region 110 has a stepped configuration. The sleeve element receiving region 110 starts from the end boundary 101 with a conical deformation opening 112 which narrows in the direction of the coaxial cable 11 to be connected and merges into a cylindrical contact region 113 and opens via a further conical transition opening 114 which narrows in the direction of the coaxial cable 11 to be connected into a radially inwardly projecting deformation block 115.The cable receptacle 100 can be provided as a turned part and can be manufactured from a conductive material, for example brass.According to FIGS. 9 and 10, the sleeve element 130 extends between the first end-face boundary 131 and the second end-face boundary 132 as a rotationally symmetrical sleeve-shaped component with a continuous coaxial cable outer conductor opening 140 and with a slot 141 continuous in the axial direction. At its end region facing the connector unit 20, a radially outwardly projecting deformation element 139 is arranged, which is bounded in the axial direction by the second end-face boundary 132 and the end face 137. The fillet 138 between the end surface 137 and the deformation element 139 prevents an otherwise sharp edge from digging into the complementary deformation opening 112 of the cable receptacle 100 during the deformation of the sleeve element 130 in the radial direction for contacting the coaxial cable outer conductor 14.Adjoining the radially outwardly projecting deformation element 139 in the direction of the coaxial cable 11 to be connected is a sleeve element deformation region 136, which has a smaller diameter than the deformation element 139 and opens out after a shoulder 134 into a sleeve element insertion region 133, which has the smallest outer diameter of the sleeve element 130. The shoulder 134 is rounded with the sleeve element deformation region 136 via a radius 135.The sleeve element 130 can be provided as a turned part and can be manufactured from a conductive material, for example brass.FIGS. 11 to 13 show the cable receiving unit 90 in the pre-assembled state as a module with the cable receiving means 100 into which the sleeve element 130 is concentrically inserted, so that the cylindrical contact region 113 of the cable receiving means 100 surrounds the sleeve element deformation region 136 in the circumferential direction and the first front-side boundary 131 of the sleeve element 130 assumes a distance A from the sleeve element contact surface 111. In this position, the radii 135, 138 at least partially engage under the deformation opening 112 and the conical deformation opening 114, but without causing a deformation of the sleeve element 130 in the radial direction. This is illustrated particularly clearly in FIG. 13. The coaxial cable outer conductor opening 140 of the sleeve element 130 assumes a position K 1 releasing the coaxial cable outer conductor 14 in this position.In FIGS. 14 to 19, the method for connecting the coaxial cable 11 to a coaxial connector 10 according to the invention is described. According to FIG. 14, in the first assembly step, the prepared coaxial cable 11 is introduced into the coaxial connector 10 in the axial direction through the cable receiving unit 90 and into the connector unit 20. The preparation of the coaxial cable 11 thereby includes the stepped exposure of the coaxial cable inner conductor 13 and the coaxial cable outer conductor 14 as well as the regional removal of the coaxial cable jacket 15 up to the cut surface 16. Likewise, the through-opening 84 of the compression element 80 enables the exposed coaxial cable inner conductor 13 to be engaged in and passed through. The suitable dimensioning of the cable receiving sheath 121 enables the coaxial cable sheath 15 to be received in the circumferential direction.In the pre-assembled position of the cable receiving unit 90 relative to the connector unit 20, the second end boundary 132 abuts against the sleeve element abutment surface 53 of the connector outer conductor housing 40 forming an annular free space E between the second end boundary 132 of the sleeve element 130 and the first covering surface 82 of the compression element 80. The formation of the annular free space E guarantees a defined contacting between the coaxial cable outer conductor opening 140 of the sleeve element 130 and the coaxial cable outer conductor 14 by receiving the end region of the coaxial cable outer conductor 14 protruding from the second end boundary 132 and shortened and possibly having burring in the compression element 80.In the further course of the connection method, the coaxial cable 11 reaches its final position in the pre-assembled coaxial connector 10 according to FIGS. 16 and 17 by the contact of the exposed end-side end region of the coaxial cable outer conductor 14 on the covering surface 82 of the compression element 80 while maintaining the distance A. This means that the coaxial cable outer conductor opening 140 of the sleeve element 130 of the cable receiving unit 90 pre-assembled in the connector unit 20 continues to assume a position K 1 releasing the coaxial cable outer conductor 14, wherein the cut surface 16 of the exposed coaxial cable sheath 15 to the cable contact 122 of the cable receiving means 100 has a value B 1 greater than or equal to zero. The coaxial cable inner conductor 13 concentrically reaches through the through-opening 84 of the compression element 80 and engages into the receiving opening 78 of the connector inner conductor 70 while contacting the contact zones 79 with the coaxial cable inner conductor 13 in a manner known to the person skilled in the art.In order to contact the coaxial cable outer conductor opening 140 of the sleeve element 130 with the coaxial cable outer conductor 14, the next is done, In the step illustrated in FIGS. 18 and 19, the cable receptacle 100 with the external thread 106 is screwed completely into the complementary internal thread 56 of the connector opening 54 of the connector outer conductor housing 40 from the pre-assembly position from FIG. 16 into the final connection position according to FIG. 18. However, a relative movement takes place between the cable receptacle 100 and the coaxial cable 11, whereby the distance B 1 described in FIG. 16 changes to the distance B 2 in FIG. 18.As already mentioned, screwing the cable receiving unit 90 into the cable receiving opening 54 brings about a relative movement between the cable receiving means 100 and the sleeve element 130 in the axial direction. This axial movement causes the radially outwardly projecting deformation element 139 to be engaged under the cylindrical contact region 113 and the radially inwardly projecting deformation block 115 to be engaged over the sleeve element deformation region 136, as a result of which the sleeve element 130 is deformed radially inward toward the coaxial cable outer conductor 14. The deformation opening 112 provided in the cable receptacle 100 and the conical transition opening 114 enable, in cooperation with the fillets 135, 138, a uniform deformation of the sleeve element 130 radially inward in the sense of a wedge-type thrust transmission.In summary, screwing the cable receptacle 100 into the connector opening 54 causes the sleeve element 130 to be deformed radially inward from a position K 1 exposing the coaxial cable outer conductor 14 into a position K 2 contacting the coaxial cable outer conductor 14. The dimensions of the outer diameter of the radially outwardly protruding deformation element 139 and the inner diameter of the radially inwardly protruding deformation block 115 and the axial distance between the deformation element 139 and the deformation block 115 ensure in the exemplary embodiment a uniform deformation of the sleeve element 130 radially inwardly and thus a secure contacting of the coaxial cable outer conductor 14 by the sleeve element 130 of the cable receiving unit 90.Depending on the requirements of the coaxial connector 10 and with the aid of a suitable dimensioning, it is also possible to use the described contacting of the sleeve element 130 to the coaxial cable outer conductor 14 as cable strain relief. This functional integration has a positive effect on the length of the coaxial connector 10.

Claims

Coaxial connector (10) for connection to a mating connector and for connection to a coaxial cable (11), which has a cable dielectric (12) penetrated by a coaxial cable inner conductor (13) and is surrounded in the circumferential direction by a coaxial cable outer conductor (14) and a coaxial cable jacket (15), wherein the coaxial connector (10) has a connector unit (20) and a cable receiving unit (90), wherein the connector unit (20) is constructed from a connector insulation housing (60), which is penetrated concentrically by a connector inner conductor (70) and is surrounded in the circumferential direction by a connector outer conductor housing (40), wherein the connector unit (20) has a compression element (80) for at least partially receiving and / or abutting the end-side end region of the coaxial cable outer conductor (14), wherein the compression element (80) is delimited in the axial direction by a first covering surface (81) and a second covering surface (82), wherein the cable receiving unit (90) has a cable receiving portion (100) and a slotted sleeve element (130), and wherein a cable receiving portion (120) and a sleeve element receiving portion (110) are arranged in the cable receiving portion (100), wherein the sleeve element (130) has a first and a second front boundary (131, 132) and a radially outwardly projecting deformation element (139), wherein the second front boundary (132) of the sleeve element (130) and the second covering surface (82) of the compression element (80) face one another in the axial direction, wherein a radially inwardly projecting deformation block (115) is arranged in the sleeve element receiving portion (110), wherein, which is spaced apart from the deformation element (139) in the axial direction during assembly with the sleeve element (130), wherein the deformation element (139) and the deformation block (115) cause a radially inwardly directed deformation of the sleeve element (130) from a position (K1) releasing the coaxial cable outer conductor (14) into a position (K2) contacting the coaxial cable outer conductor (14) by the movement of the sleeve element (130) into the sleeve element receiving region (110) of the cable receiving region (100), characterized in that an annular free space (E) is formed between the second end-face boundary (132) of the sleeve element (130) and the second covering surface (82) of the compression element (80).Coaxial connector (10) according to claim 1, characterized in that the compression element (80) is made of a resilient, electrically insulating material.Coaxial connector (10) according to one of the preceding claims, characterized in that the outer diameter of the radially outwardly projecting deformation element (139) on the sleeve element (130) has the same value as the inner diameter of the radially inwardly projecting deformation block (115) in the cable receiving region (120).Coaxial connector (10) according to one of the preceding claims, characterized in that the radially outwardly projecting deformation element (139) is arranged on the end region facing the connector unit (20) with the second end-face boundary (132) of the sleeve element (130).Coaxial connector (10) according to one of the preceding claims, characterized in that the sleeve element receiving region (110) of the cable receptacle (100) has a sleeve element contact surface (111) for bearing the first end-face delimitation (131) of the sleeve element (130).Coaxial connector (10) according to one of the preceding claims, characterized in that the coaxial connector (10) consists of at most one preassembled subassembly consisting of the connector unit (20) and the cable receiving unit (90), wherein the cable receiving unit (90) is connected to the connector unit (20) in a detachably connectable manner.Coaxial connector (10) according to claim 1 with a connected coaxial cable (11), which has a cable dielectric (12) through which a coaxial cable inner conductor (13) passes and is surrounded in the circumferential direction by a coaxial cable outer conductor (14) and a coaxial cable jacket (15), characterised in that the end-side end region of the coaxial outer conductor (14) at least partially penetrates into the compression element (80) or deforms it.

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