Title of Invention

"A CABLE PLUG FOR A COAXIAL CABLE AND A METHOD FOR MOUNTING CABLE PLUG"

Abstract

The invention relates to a cable plug (30) for a coaxial cable (47), in particular comprising an external corrugated conductor. Said plug comprises an electrically conductive housing (33), which concentrically surrounds an insulated internal conductor (31), in addition to fixing elements (34,35,36), which are used to connect the external conductor of the coaxial cable electrically and mechanically to the housing (33) of the cable plug (30). The aim of the invention is to permit a particularly simple configuration and assembly for a cable plug of this type. To achieve this, the fixing elements (34,35,36) ensure a fixed and sealed connection between the external conductor of the coaxial cable and the housing (33) of the cable plug (30).

Full Text

WO 2006/047907 PCT/CH2005/000662 DESCRIPTION CABLE PLUG FOR A COAXIAL CABLE AND METHOD FOR FITTING SUCH A CABLE PLUG 5 TECHNICAL FIELD The present invention relates to the field of plug-in connector technology for coaxial cables. It relates to 1 0 a cable plug for a coaxial cable in accordance with the precharacterizing clause of claim 1 and to a method for fitting such a cable plug. A cable plug of the type mentioned at the outset is 15 known, for example, from the document EP-A2-0 901 200. PRIOR ART Coaxial cables, as are used nowadays, for example, in 2 0 the sector of base stations of mobile radio networks, have, in a concentric arrangement, an inner conductor and an outer conductor, which are insulated from one another by a dielectric lying there between. The outer conductor is generally surrounded by a protective outer 25 sheath consisting of plastic. The outer conductor of a coaxial cable can be in the form of metallic braiding (at frequencies which are not; too high) . However, it can also be in the form of a continuous tube. If an increased flexibility of the ■ cable is not required, the 30 tube of the outer conductor may have smooth walls. In order to achieve increased flexibility, corrugated tubes or hoses consisting of metal are generally used as the outer conductor, it being possible for the corrugations to either be separated annularly or 35 continuously helical. In many cases it is desirable to provide detachable connections for such coaxial cables in order to simplify fitting and maintenance. For this purpose, a WO 2006/047907 - 2 - PCT/CH2005/000662 large number of cable plugs have been developed and proposed in the past which differ from one another in terms of cable type and fixing concept. In principle, such a cable plug needs to fulfill the following 5 requirements: • The cable plug needs to produce good electrical contact between the plug housing, which generally forms the outer conductor within the plug, and the outer conductor of the cable. 10 • The cable plug needs to ensure a mechanical connection having a high tensile strength between the plug housing and the outer conductor of the cable in order to ensure that the plug-in connection can be subjected to a sufficient 15 mechanical load. • The cable plug, in particular if the plug-in connection - as in the case of base stations - is subjected to weathering influences , needs to adjoin the outer sheath of the coaxial cable in a 2 0 sealing manner in order to prevent the ingress of moisture, dirt and other influences on the interior of the cable. • Other, constant requirements relate to a simple design, fitting which is as simple as possible 25 and cost-effective manufacture and storage. A known cable plug by the Applicant which is suitable in particular for coaxial cables having an outer conductor with annular corrugations is illustrated in 30 longitudinal section in figure 1. The cable plug 10 has a housing 18, which acts as the outer conductor and in which an inner conductor 16 is held concentrically and in electrically insulated fashion by means of an insulator 15. A union nut 11 is fitted such that it can 35 be rotated on the plug-in side end on the housing 18 by means of a snap ring 13, with which union nut the cable plug 10, once it has been inserted into a corresponding female connector, can be screwed to the female connector. For guidance purposes during the insertion, WO 2006/047907 - 3 - PCT/CH2005/000662 an annular insert 14 is provided around which a seal 12 is arranged. On the cable side of the cable plug 10, the inner conductor 16 merges with a seal 21, which rests in an inner conductor 19 and produces the 5 electrical contact with the inner conductor of the coaxial cable (not illustrated). The cable-side screw connection, which is used for contact-making, retaining and sealing purposes, comprises a large number of different parts: in order to make contact with and 10 retain the outer conductor of the coaxial cable, a contact sleeve 2 4 is provided which is split into individual, radially sprung tongues by axially running slits 23 arranged distributed over the circumference. The contact sleeve 2 4 has, on the plug-in side, an edge 15 which thickens in the form of a bead inwards and with which the contact sleeve 24 bears against a circumferential projection 22 shaped in the interior of the housing 18. A flanged edge of the outer conductor of the cable is clamped in between the bead-shaped edge 20 of the contact sleeve 24 and the projection 22 during fitting in order to produce the electrical contact between the housing 18 and the outer conductor and to mechanically fix the cable. The fixing of the outer conductor is illustrated in detail, for example, in the 25 figures of the document mentioned at the outset EP-A2-0 901 200. The contact ring 2 4 is pressed in clamping fashion against the projection 22 by means of a first hollow 30 screw 20, which can be screwed into the housing 18. At the same time, in order to provide sealing between the first hollow screw 20 and the housing 18, an inner seal 17 is compressed. In order to provide sealing between the first hollow screw 2 0 and the outer conductor of 35 the cable, a further seal 25 is provided which surrounds the outer conductor and is pressed radially inwards against the outer conductor by being compressed axially by means of a further hollow screw 26. Finally, a further seal 17' is provided in the second hollow WO 2006/047907 - 4 - PCT/CH2005/000662 screw 2 6, which further seal 17' provides sealing with respect to the outer sheath of the cable. Owing to the various screw connections and seals, the 5 design and • fitting of the known cable plug shown in figure 1 are complicated and laborious. One of the reasons for these disadvantages can be found in the contact sleeve 24: the contact sleeve 24 could in principle, if it were to be in the form of a sleeve 10 without slits, press the flanged edge of the cable outer conductor against the projection 22 uniformly over the entire circumference and therefore not only produce the necessary electrical and mechanical contact but at the same time also take on the sealing function 15 for the outer conductor with respect to the housing. Further seals may therefore not be required and it would be possible to implement a significantly simplified cable plug which can be fitted more easily. However, the contact sleeve 24 has slits, since it is 20 necessary for the contact sleeve 24, in the case of a cable having an outer conduct or with annu1ar corrugations, to be capable of being pushed onto the outer conductor, on the one hand, despite the corrugation and, on the other hand, to dip into the 25 first corrugation trough with the beaded edge behind the flanged conductor edge in order to press the conductor edge safely against the projection 22. Such configurations are not only known from EP-A2-0 901 200, but also from US-A-4,046,451 or EP-A1-0 938 165. 30 A slightly different situation results if the coaxial cable has a corrugated outer conductor with a helical corrugation, as is the case in documents EP-A1-0 599 602 or US-A-5,518,420 or US-A-6,032,358. Here, in 35 principle a closed sleeve, i.e. one without slits, can be used as the contact sleeve and has a thread structure, which matches the helical corrugation of the outer conductor, on the inner side and can be screwed onto the outer conductor like a nut. Even in this case, WO 2006/047907 - 5 - PCT/CH2005/000662 sealing is not obviously considered at the flanged edge of the outer conductor since, in all cases, additional sealing means such as 0 rings or the like are provided in order to seal the cable plug off towards the 5 outside. DESCRIPTION OF THE INVENTION The object of the invention is therefore to provide a 10 cable plug for a coaxial cable, in particular having an outer conductor with annular corrugations, which avoids the disadvantages of known cable plugs and is characterized in particular by a simplified, cost- effective design and simplified fitting, as well as to 15 specify a method for fitting said cable plug. The object is achieved by the totality of the features in claims 1 and 21, 23. The essence of the invention consists in designing the fixing means for fixing the 2 0 cable outer conductor to the cable plug such that, with the fixing, at the same time a sealing connection is produced between the outer conductor of the coaxial cable and the housing of the cable plug. As a result, it is possible to dispense with further sealing means 25 and additional screw connections, and a particularly simple cable plug which can be fitted easily and is also suitable in principle for all types of cable outer conductors results. 30 One preferred configuration of the invention is characterized by the fact that the fixing means comprise a sealing and clamping ring, which is pushed over the end of the outer conductor of the coaxial cable and, with an annular, first sealing face, presses 35 an edge at the end of the outer conductor in a sealing manner against a continuous and annular, second sealing face, which is arranged in the housing of the cable plug, and that the sealing and clamping ring is arranged and guided axially within the housing. WO 2006/047907 - 6 - PCT/CH2005/000662 In order to actuate the sealing and clamping ring, provision is advantageously made for the fixing means to further comprise a screw element, which can be 5 screwed to the housing of the cable plug and, when it is screwed to the housing, exerts an axial force on the sealing and clamping ring. The screw element is in particular in the form of a nut or hollow screw, which has a pressure ring on the inside, with which it dips 10 into the housing when screwed and presses onto the sealing and clamping ring in the axial direction. In order that the sealing and clamping ring can be used without any problems in all types of corrugated and 15 uncorrugated outer conductors, it is advantageous that the sealing and clamping ring is designed to be closed annularly, that the sealing and clamping ring has a conically tapering ring section towards the sealing side, that a corresponding conical guide face is 20 arranged in the housing, on which guide face the sealing and clamping ring is guided with its conical ring section towards the axis, that the first sealing face is designed to be continuous, and that the two sealing faces are oriented essentially at right angles 2 5 to the conical guide face. The deformation of the sealing and clamping ring during screwing is facilitated if the sealing and clamping ring is cylindrical on the side facing away from the 30 sealing side and has a ring section with a reduced wall thickness in the cylindrical part, adjacent to the conical ring section. The sealing and clamping ring may consist of a metallic 35 material, in particular of stainless steel. However, it may also consist of a plastic or a composite material. The production of the cable plug is simplified if the second sealing face and possibly the conical guide face WO 2006/047907 - 7 - PCT/CH2005/000662 are formed on a metallic adjusting ring, which is inserted into the housing of the cable plug and is in electrical contact with the housing. 5 A configuration of the cable plug in accordance with the invention which is an alternative to the closed sealing and clamping ring is characterized by the fact that the sealing and clamping ring is designed as an open ring provided with a split or designed to comprise 10 a plurality of ring segments. It can therefore be pushed over the corrugations of the outer conductor without any difficulties in the slightly open state and, after closing, can be fixed axially in a simple manner in a corrugation trough. Owing to the opening 15 split, much less severe forces are required for the clamping and sealing in order to press the end of the outer conductor with a radial component against the corresponding sealing face. 2 0 Preferably, the fixing means further comprise a screw element, which can be screwed to the housing of the cable plug and, when screwed to the housing, exerts an axial force on the sealing and clamping ring, means for guidance being provided on the sealing and clamping 2 5 ring and on the screw element and preventing the sealing and clamping ring from tipping. In particular, the guide means comprise a v-shaped guide groove in the front face of the screw element and 30 a v-shaped edge contour, which matches said guide groove, on the sealing and clamping ring. The sealing and clamping ring may be essentially cylindrical. In this case, it preferably has a 35 circumferential annular bead on the inside, with which annular bead it presses the outer conductor against the second sealing face. The use of the sealing and clamping ring is further simplified if it is designed WO 2006/047907 - 8 - PCT/CH2005/000662 to be mirror-symmetrical with respect to a central plane passing through the annular bead. However, the sealing and clamping ring may also be 5 conical. In the method according to the invention, the flanged edge can be clamped in in particular by means of a screw connection. 10 BRIEF EXPLANATION OF THE FIGURES The invention will be explained in more detail below with reference to exemplary embodiments in connection 15 with the drawing, in which: figure 1 shows a longitudinal section through a cable plug for cables with a corrugated outer conductor in accordance with the prior art; 20 figure 2 shows a longitudinal section through a cable plug in accordance with a preferred exemplary embodiment of the invention; 25 figure 3 shows, partially sectioned, the adjusting ring of the cable plug from figure 2; figure 4 shows, partially sectioned, the sealing and clamping ring of the cable plug from 3 0 figure 2; figure 5 shows the cable plug from figure 2 with a cable having an outer conductor with annular corrugations, shortly before the screwing 35 process; figure 6 shows a simplified longitudinal section through another preferred exemplary embodiment of the invention with an open WO 2006/047907 - 9 - PCT/CH2005/000662 (split) sealing and clamping ring of the type illustrated in figure 7 ; figure 7 shows, in various subfigures 7(a)-(c), the 5 sealing and clamping ring from figure 6, in section (figure 7a), in a front view (figure 7b) and in the fitted state on the end of the outer conductor (figure 7c); and 10 figure 8 shows a simplified longitudinal section through a further preferred exemplary embodiment of the invention with an open (split) sealing and clamping ring, which is conical. 15 APPROACHES FOR IMPLEMENTING THE INVENTION In an illustration comparable to that in figure 1, a preferred exemplary embodiment of a cable plug 2 0 according to the invention is reproduced in figure 2. The cable plug 30 comprises a housing 33, which concentrically surrounds an inner conductor 31, which is held in insulated fashion in the housing by means of an .insulator 32. In turn, a union nut 27 is fixed with 2 5 the aid of a snap ring 2 9 such that it can be rotated at the plug-in side end of the housing 33. For sealing purposes in interaction with the female connector, a seal 2 8 is provided. In order to fix, make contact with and seal the outer conductor of the coaxial cable, a 30 screw connection is provided which comprises three elements, namely an adjusting ring 34 consisting of metal, for example brass, which is inserted into the housing 33 and is supported on a shoulder at the level of the insulator 32, a sealing and clamping ring 35 and 35 a nut 36. The nut 3 6 can be screwed onto the housing 33 at the cable-side end, the cable being guided through a central through-hole in the nut 36. A pressure ring 37 is formed in the interior of the nut 36, dips into the central hole in the housing 33 when the nut 36 is WO 2006/047907 - 10 - PCT/CH2005/000662 screwed onto the housing 33 and presses on the cable- side ring face of the sealing and clamping ring 35. The adjusting ring 34 and the sealing and clamping ring 5 35, which are illustrated individually in figures 3 and 4, form, with their mutually assigned sealing faces 39 and 42, a clamping mechanism, which clamps the flanged edge 52 on the outer conductor 50 of an introduced coaxial cable 47 in when the cable plug 30 is screwed 10 (see figure 5) . In order that the sealing and clamping ring 35 can be pushed over the corrugations of an outer conductor 5 0 with annular corrugations without any problems (as is shown in figure 5), but at the same time can also engage safely behind the flanged edge 52 15 when screwed together, it comprises a plurality of ring sections 43, 44 and 45, of which the plug-in side ring section 4 3 tapers conically in the plug-in direction and the two other ring sections 44 and 45 are cylindrical. A corresponding conical guide face 41 on 20 the adjusting ring 34 lies opposite the conical ring section 4 3 and causes the conical ring section 4 3 to be increasingly narrowed when the cable plug 30 is screwed and therefore when the sealing and clamping ring 35 is inserted into the housing 33. This narrowing results in 25 the sealing and clamping ring pressing an edge of the outer conductor 50 of sufficient width against the sealing face 39 on the adjusting ring 34 and therefore ensuring reliable sealing. 30 In order to make safe clamping possible in the case of a conically widened flanged edge 52 and the Inwardly directed narrowing movement of the sealing and clamping ring 35, the two sealing faces 39 and 42 on the adjusting ring 34 and the sealing and clamping ring 35, 35 respectively, are oriented essentially at right angles to the conical guide face 41. Since the two sealing faces 39, 42 form closed, uniform rings, the flanged edge 52, which is clamped in between the two sealing faces 39, 42, acts as a metallic sealing ring. WO 2006/047907 - 11 - PCT/CH2005/000662 'The sealing and clamping ring 35, as a closed ring (without any slits), is subjected to considerable mechanical loads during screwing owing to the narrowing 5 associated therewith. It therefore needs to be produced from a suitable material in order to withstand these loads. In particular, the material of the sealing and clamping ring 35 should also be selected such that as few intermodulations as possible occur within the cable 10 plug 30 on signal transmission. A metallic material such as, for example, aluminum or in particular stainless steel (V2A, material No. 4301) has proven successful. However, it should be nonmagnetic in order not to negatively influence the conduction properties 15 in the cable plug. However, other materials such as plastics or composite materials can also be used. Such a suitable composite material is, for example, a PTFE filled with small metal particles. The sealing and clamping ring 35 can additionally be coated in order to 20 make it subject to as little friction as possible. When fitting the cable plug 30 shown in figure 5, first the nut 36 is pushed over the coaxial cable 47. Then, the sealing and clamping ring 35 is pushed over an 2 5 exposed end of the outer conductor 50 of the coaxial cable 47. Subsequently, the edge at the end of the outer conductor 50 is flanged on the outside to form a 30 flanged edge 52. Then, the cable is inserted with the exposed inner conductor 4 8 into the female connector part, which has slits, of the inner conductor 31 in the cable plug 30. Finally, the nut 3 6 is screwed onto the housing 33 until the flanged edge is clamped in 35 uniformly around the circumference between the two sealing faces 39, 42 in a sealing and retaining mariner and in a manner providing electrical contact. An exposed section of the dielectric 4 9 of the cable is in this case accommodated by the adjusting ring 34. WO 2006/047907 - 12 - PCT/CH2005/000662 Towards the rear out, the coaxial cable 4 7 can additionally be sealed by a sealing ring, which is introduced into a corresponding annular groove 38 in the nut 36. 5 The sealing clamping of the flanged edge 52 in the cable plug 30 shown in figure 5 is not restricted to coaxial cables having an outer conductor with annular corrugations, but can also be used in cables having an 10 outer conductor with helical corrugations or in cables having a straight, tubular outer conductor, with the result that, on top of the advantageous simple design and simple fitting, a single plug type can be used for many types of cable. Even in the case of cables with a 15 braided outer conductor, corresponding clamping can be achieved with the novel cable plug without, however, it being possible for sufficient simultaneous sealing to be ensured. 2 0 The previously explained exemplary embodiment shown in figures 2-5 was based on a closed sealing and clamping ring, which, owing to its constant inner diameter is not only subject to restrictions when pushed onto the outer conductor of the coaxial cable but also requires 25 considerable forces during the clamping and sealing. An improvement in this respect can be achieved if, in the context of the invention, a sealing and clamping ring is used which is not completely closed but is 30 open, i.e. is provided with a slit or a split at least at one point, or overall comprises a plurality of independent ring segments. Owing to the design as an open ring, the inner diameter of the sealing and clamping ring can be enlarged by being bent up 35 temporarily so as to facilitate the procedure for pushing it onto the outer conductor, with the result that the sealing and clamping ring can then bo pushed over the corrugations of the outer conductor without any effort. Once it has been pushed on, the inner WO 2006/047907 - 13 - PCT/CH2005/000662 diameter can be reduced in size again by being bent together. The sealing and clamping ring then assumes, for example, a position between two adjacent corrugations which is secured against being axially 5 displaced. A first exemplary embodiment for a cable plug with an open sealing and clamping ring is reproduced in figures 6 and 7, in which case no hatching of the 10 sectioned parts has been provided. The cable plug 60 in figure 6 has a similar design to the cable plug 30 from figure 5. A housing 56 coaxially surrounds an inner conductor 53, which is retained in insulated fashion in the housing 56. A union nut 55 is provided for the 15 plug-in connection, and an annular seal 54 is used for sealing the plug-in connection. From the opposite side, the end of a coaxial cable 65 having a corrugated outer conductor 61 and a surrounding outer sheath 64 is inserted into the cable plug 60. The connection of the 2 0 inner conductor of the coaxial cable 65 to the inner conductor 53 of the cable plug 60 is not illustrated in figure 6. For the sealing clamping of the outer conductor 61 in 25 the housing 56, an open sealing and clamping ring 58 (with slits or splits) is provided which is illustrated individually in figure 7. The metallic sealing and clamping ring 58 is essentially cylindrical. It is mirror-symmetrical with respect to a central plane 74 30 at right angles to the ring axis. In the central plane 74, an inwardly protruding, circumferential annular bead 68 is integrally formed on the inner side of the sealing and clamping ring 58, which annular bead, when the screw connection 59, 63 is tightened, presses the 35 outer conductor 61 in sealing and clamping fashion against a sealing face 57, which is formed slightly conically on the housing 56. Since the sealing and clamping ring 5 8 is provided with a radial split 69 (figure 7b), it can be compressed comparatively easily WO 2006/047907 - 14 - PCT/CH2005/000662 when the cable plug 60 is screwed whilst; reducing the size of the inner diameter and therefore produces the required contact pressure for the outer conductor 61. 5 The screw connection comprises a hollow screw 63 (with an inner sealing groove 62) and a corresponding thread arrangement 59. The hollow screw 63 has a v-shaped guide groove 7 3 on the front end facing the sealing and clamping ring 58, which guide groove accommodates a 10 corresponding v-shaped edge contour 66, 67 on the sealing and clamping ring and thus guides the sealing and clamping ring 58 during the screwing and prevents it from tipping. The sealing and clamping ring 58 enters axially into a corresponding bore in the housing 15 56, which is delimited towards the inside by the conical sealing face 57. The annular bead 68, which fixes the sealing and clamping ring 58 at the same time in a corrugation trough of the outer conductor 61 (see also figure 7c) , presses the outer conductor 61 in 20 sealing and clamping fashion inwards against the sealing face 57 . A slightly different configuration of the open sealing and clamping ring is implemented in the cable plug 70 25 from figure 8. The sealing and clamping ring 72 in this case has a conical shape, with which the ring, with its front end, presses the outer conductor 61 in sealing and clamping fashion against a corresponding sealing face 71. 30 The open sealing and clamping ring has the following features and advantages: The sealing and clamping ring has splits and makes sealing possible owing to the guidance in the 35 housing of the cable plug. With the open sealing and clamping ring, the sealing is brought about virtually without any complexity in terms of deformation. The force used WO 2006/047907 - 15 - PCT/CH2005/000662 is conducted directly and without losses to the sealing faces from the outer conductor. Owing to the reduced expenditure of force, a reduction in the physical length of the cable plug 5 of up to 25% is possible. The sealing and clamping ring can be reused up to 30 times, since it does not become plastically deformed. The sealing and clamping ring is so far open that 10 it can be pushed over the corrugations of the outer conductor without any problems. Even during the insertion into the housing, the ring is so far closed that it can no longer slide out of the corrugation of the outer conductor. 15 - The v-shaped guide on the nut prevents the ring from tipping. WO 2006/047907 - 16 - PCT/CH2005/000662 LIST OF REFERENCE SYMBOLS 10,30,60,70 Cable plug 5 11 Union nut 12 Seal 13 Snap ring 14 Insert 15 Insulator 10 16 Inner conductor 17,17' Seal 18 Housing 19 Inner conductor 20,26 Hollow screw 15 21 Seal 22 Projection (circumferential 23 Slit 24 Contact s1eeve 25 Seal 20 27,55 Union nut 28 Seal 29 Snap ring 31,53 Inner conductor 32 Insulator 25 33,56 Housing 34 Adjusting ring 35,58,72 Sealing and clamping ring 36 Nut 37 Pressure ring (nut) 30 38 Annular groove 39 Sealing face 40 Edge 41 G}uide face (conical) 42 Sealing face 35 43,44,45 Ring section 46 Pressure face 47, 65 Coaxial cable 4 8 Inner conductor 49 Dielectric WO 2006/047907 - 17 - PCT/CH2005/000662 50, 61 Outer conductor 51, 64 Outer sheath 52 Flanged edge 54 Seal 5 57,71 Sealing face 59 Thread arrangement 62 Sealing groove 63 Hollow screw 66, 67 Edge contour (v-shaped) 10 68 Annular bead 69 Split 73 Guide groove (v-shaped) 74 Central plane WO 2006/047907 - 18 - PCT/CH2005/000662 PATENT CLAIMS 1. A cable plug (30, 60, 70) for a coaxial cable (47, 5 65), in particular having an outer conductor (50, 61) with annular corrugations, which cable plug (30, 60, 70) comprises an electrically conductive housing (33, 56), which concentrically surrounds an inner conductor (31, 53) arranged in insulated fashion in the housing, 10 and fixing means (34, 35, 36; 58; 63, 72), with which the outer conductor (50, 61) of the coaxial cable (47, 65) can be electrically and mechanically connected to the housing (33, 56) of the cable plug (30, 60, 70), characterized in that the fixing means (34, 35, 36; 58; 15 63, 72) when being fixed at the same time brines about a sealing connection between the outer conductor (50, 61) of the coaxial cable (47, 65) and the housing (33, 56) of the cable plug (30, 60, 70). 20 2. The cable plug as claimed in claim 1, characterized in that the fixing means comprise a sealing and clamping ring (35, 58, 72), which is pushed over the end of the outer conductor (50, 61) of the coaxial cable (47, 65) and, with an annular, first 25 sealing face (42, 68), presses an edge (52) at the end of the outer conductor (50, 61) in a sealing manner against a continuous and annular, second sealing face (39, 57, 71), which is arranged in the housing (33, 56) of the cable plug (30, 60, 70). 30 3. The cable plug as claimed in claim 2, characterized in that the sealing and clamping ring (35, 58, 72) is arranged and guided axially within the housing (33, 56). 35 4. The cable plug as claimed in claim 2 or 3, characterized in that the fixing means further comprise a screw element (36, 63), which can be screwed to the housing (33, 56) of the cable plug (30, 60, 70) and, WO 2006/047907 - 19 - PCT/CH2005/000662 when it is screwed to the housing (33, 56) , exerts an axial force on the sealing and clamping ring (35, 58, 72) . 5 5. The cable plug as claimed in claim 4, characterized in that the screw element is in the form of a nut (36) or hollow screw (63). 6. The cable plug as claimed in claim 5, 10 characterized in that the nut (36) has a pressure ring (37) on the inside, with which it dips into the housing (33) when screwed and presses onto the sealing and clamping ring (35) in the axial direction. 15 7. The cable plug as claimed in claim 2, characterized in that the sealing and clamping ring (35) is designed to be closed annularly, in that the sealing and clamping ring (35) has a conically tapering ring section (43) towards the sealing side, in that a 20 corresponding conical guide face (41) is arranged in the housing (33), on which guide face the sealing and clamping ring (35) is guided with its conical ring section (43) towards the axis, in that the first sealing face (42) is designed to be continuous, and in 25 that the two sealing faces (39, 42) are oriented essentially at right angles to the conical guide face (41) . 8. The cable plug as claimed in claim 7, 30 characterized in that the sealing and clamping ring (35) is cylindrical on the side facing away from the sealing side;. 9. The cable plug as claimed in claim 8, 35 characterized in that the sealing and clamping ring (35) has a ring section (44) with a reduced wall thickness in the cylindrical part, adjacent to the conical ring section (43). WO 2006/047907 - 20 - PCT/CH2005/000662 10. The cable plug as claimed in one of claims 2 to 9, characterized in that the sealing and clamping ring consists of a metallic material, in particular of stainless steel. 5 11. The cable plug as claimed in one of claims 2 to 9, characterized in that the sealing and clamping ring (35) consists of a plastic or a composite material. 10 12. The cable plug as claimed in one of claims 2 to 11, characterized in that the sealing and clamping ring (35) is coated so as to have little friction. 13. The cable plug as claimed in one of claims 2 to 15 12, characterized in that the second sealing face (39) and possibly the conical guide face (41) are formed on a metallic adjusting ring (34), which is inserted into the housing (33) of the cable plug (30) and is in electrical contact with the housing (33). 20 14. The cable plug as claimed in one of claims 2 to 5, characterized in that the sealing and clamping ring (58, 72) is designed as an open ring provided with a split (69) or designed to comprise a plurality of ring 25 segments. 15. The cable plug as claimed in claim 14, characterized in that the fixing means further comprise a screw element (63), which can be screwed to the 30 housing (56) of the cable plug (60, 70) and, when screwed to the housing (56), exerts an axial force on the sealing and clamping ring (58, 72), and in that means (67, 73) for guidance are provided on the sealing and clamping ring (58, 72) and on the screw element 35 (63) and prevent the sealing and clamping ring (58, 72) from tipping. 16. The cable plug as claimed in claim 15, characterized in that the guide means comprise a WO 2006/047907 - 21 - PCT/CH2005/000662 v-shaped guide groove (73) in the front face of the screw element (63) and a v-shaped edge contour (67), which matches said guide groove, on the sealing and clamping ring (58, 72) . 5 17. The cable plug as claimed in one of claims 14 to 16, characterized in that the sealing and clamping ring (58) is essentially cylindrical. 10 18. The cable plug as claimed in claim 17, characterized in that the sealing and clamping ring (58) has a circumferential annular bead (68) on the inside, with which annular bead it presses the outer conductor (61) against the second sealing face (57) . 15 19. The cable plug as claimed in claim 17, characterized in that the sealling and clamping ring (58) is designed to be mirror-symmetrical with respect to a central plane (74) passing through the annular 20 bead (68) . 20. The cable plug as claimed in one of claims 14 to 16, characterized in that the sealing and clamping ring (72) is conical. 25 21. A method for fitting a cable plug (30) as claimed in claim 7 to a coaxial cable (47), characterized in that, first, the sealing and clamping ring (35) is pushed over an exposed end of the outer conductor (50) 30 of the coaxial cable (47), in that the edge at the end of the outer conductor (50) is then flanged on the outside to form a flanged edge (52), and in that, finally, the flanged edge is clamped in uniformly around the circumference between the two sealing faces 35 (39, 42) in a sealing and retaining manner and in a manner providing electrical contact. WO 2006/047907 - 22 - PCT/CH2005/000662 22. The method as claimed in claim 14, characterized in that the flanged edge (52) is clamped in by means of a screw connection (36) . 5 23. A method for fitting a cable plug (60, 7 0) as claimed in claim 14 to a coaxial cable (65), characterized in that, first, the sealing and clamping ring (58, 72), in the slightly open state, is pushed over the end of the outer conductor (61) of the coaxial 10 cable (65) such that, once the opening has been closed, it is fixed in a corrugation trough of the outer conductor (61) in the axial direction, and in that, finally, the edge at the end of the outer conductor (61) is pressed against the second sealing face (57, 15 71) and is clamped in uniformly around the circumference between the two sealing faces (57, 68, 71) in a sealing and retaining manner and in a manner providing electrical contact. 20 24. The method as claimed in claim 23, characterized in that the edge is clamped in by means of a screw connection (59, 63). The invention relates to a cable plug (30) for a coaxial cable (47), in particular comprising an external corrugated conductor. Said plug comprises an electrically conductive housing (33), which concentrically surrounds an insulated internal conductor (31), in addition to fixing elements (34,35,36), which are used to connect the external conductor of the coaxial cable electrically and mechanically to the housing (33) of the cable plug (30). The aim of the invention is to permit a particularly simple configuration and assembly for a cable plug of this type. To achieve this, the fixing elements (34,35,36) ensure a fixed and sealed connection between the external conductor of the coaxial cable and the housing (33) of the cable plug (30).

Documents:

01268-kolnp-2007-abstract.pdf

01268-kolnp-2007-claims.pdf

01268-kolnp-2007-correspondence others 1.1.pdf

01268-kolnp-2007-correspondence others 1.2.pdf

01268-kolnp-2007-correspondence others 1.3.pdf

01268-kolnp-2007-correspondence others 1.4.pdf

01268-kolnp-2007-correspondence others.pdf

01268-kolnp-2007-description complete.pdf

01268-kolnp-2007-drawings.pdf

01268-kolnp-2007-form 1.pdf

01268-kolnp-2007-form 2.pdf

01268-kolnp-2007-form 3.pdf

01268-kolnp-2007-form 5.pdf

01268-kolnp-2007-gpa.pdf

01268-kolnp-2007-international exm report.pdf

01268-kolnp-2007-international publication.pdf

01268-kolnp-2007-international search report 1.1.pdf

01268-kolnp-2007-international search report.pdf

01268-kolnp-2007-pct request.pdf

01268-kolnp-2007-priority document 1.1.pdf

01268-kolnp-2007-priority document.pdf

1268-KOLNP-2007-(14-12-2012)-ABSTRACT.pdf

1268-KOLNP-2007-(14-12-2012)-AMANDED PAGES OF SPECIFICATION.pdf

1268-KOLNP-2007-(14-12-2012)-CLAIMS.pdf

1268-KOLNP-2007-(14-12-2012)-CORRESPONDENCE.pdf

1268-KOLNP-2007-(14-12-2012)-DRAWINGS.pdf

1268-KOLNP-2007-(14-12-2012)-FORM-1.pdf

1268-KOLNP-2007-(14-12-2012)-FORM-2.pdf

1268-KOLNP-2007-(14-12-2012)-FORM-3.pdf

1268-KOLNP-2007-(14-12-2012)-FORM-5.pdf

1268-KOLNP-2007-(14-12-2012)-OTHERS.pdf

abstract-01268-kolnp-2007.jpg