DE20319057U1 - Mounting part for a coaxial corrugated tubular cable has a casing with devices to fix a corrugated tube in the casing and to make electrical contact as well as an electrically insulated support body - Google Patents

Abstract

A corrugated tube on a hollow inner conductor has a sleeve surface with ring-shaped corrugation. A casing (1) with a longitudinal axis (11) has devices (2-5,8) to fix the corrugated tube in the casing and to make electrical contact. An electrically insulated support body (22) holds and centers an inner conductor contact part (23) while insulating it against the casing.

Description

The invention relates to a fitting for coaxial corrugated cable with the features specified in the preamble of claim 1. Such a fitting is from the DE 43 23 953 C2 known. The known fitting has a two-part housing with a rear part and with a front part, which are only joined together by the process of assembly on the corrugated pipe cable. To assemble the valve, the corrugated pipe cable is first cut off bluntly and the cable sheath is removed over part of its length. Then the rear part of the housing is pushed onto the cable sheath until the tips of the fingers of the sleeve strike the first crest of the corrugated tube. Therefore, the rear part of the housing has an inner diameter that is adapted to the outer diameter of the cable sheath. If you push the rear part of the housing further onto the jacket with a little more force, the fingers spring outwards so that their tips can overcome the first wave crest, whereupon they spring into the first wave valley. At the front end, the rear part of the housing has an inwardly projecting collar which engages in a recess in a sleeve which has a plurality of longitudinal slots in a front section, through which fingers are formed which have a tip at the front end with which they fit into a Intervene in the corrugation trough of the corrugated pipe. The fact that the collar engages in the recess of the sleeve, this is caught in the rear part of the housing. Because the recess in the sleeve is considerably wider in the axial direction than the collar of the rear housing part, the sleeve can be displaced to a limited extent in the rear housing part.

The front part of the case has a rear section, the inside diameter of which is the smallest Corresponds to the inner diameter of the corrugated pipe. In the front part of the front part of the housing is a (inner conductor contact part held in an insulation support. On their outside carries that Front housing a cap nut, which on a matching external thread of the rear part of the housing is rotated. The first wave crest of the corrugated tube is between the fingers of the sleeve clamped on one side and an annular stop surface formed in the front part of the housing and folded by progressively turning the union nut; thereby a flanged flange is formed at the front edge of the corrugated tube and that Corrugated tube both mechanically and electrically with the screwed together casing connected. At the same time, the inner conductor contact part penetrates with one against the corrugated pipe, radially resilient socket in the tubular Inner conductor of the corrugated tube and sets the electrical contact to this one. This allows position tolerances of the end of the coaxial corrugated pipe in the Armature to be balanced, the disadvantage is that electrical loops are formed, which are undesirable are because they have the high frequency transmission behavior deteriorate. In addition, there is an insertion of the inner conductor bushing the fitting in the hollow inner conductor of the corrugated tube cable if this deviates from the coaxial target position and / or a Pipe with internal thread.

The present invention lies the task of a fitting for a coaxial RF cable, in particular for a Corrugated tube cables with a hollow inner conductor, which are available by avoiding the disadvantages mentioned even by less experienced Installers without observing the process of making contact in the valve can be assembled and construction-related offers a greater guarantee that that there is good electrical contact between them when mounting the inner conductors of the fitting and the cable.

This task is solved by a fitting with the features specified in claim 1. advantageous Developments of the invention are the subject of the dependent claims.

If here in connection with the casing the valve is spoken from "back" and "front", so is referred to as the rear section of the armature of those in which the coaxial cable is inserted. The front section of the fitting is the section in which the electrically insulating support body and the one held by it firmly in the housing arranged inner conductor contact part of the fitting.

According to the invention that carries the insulating support body held Inner conductor contact part a rearward, that is, the corrugated tube cable facing attachment part, which is captive on the inner conductor contact part held and in the direction of the longitudinal axis against a restoring force can be moved forward. This has the advantage of being hollow Reliably contact the inner conductor of the corrugated tube cable on the front can. Fluctuations in the position of the front edge of the inner conductor of the corrugated pipe cable be compensated for in that the attachment part against a restoring force can dodge towards the front end of the case if the inner conductor of the corrugated pipe cable when it is pressed into the housing hits the neck part. For this purpose, the extension part is positioned in the housing that even in the worst-case scenario, in which the inner conductor of the corrugated pipe is too far back on everyone Case still hits the neck part and pushes it forward, the Way by which the attachment part can be moved easily can be measured that the position tolerances that occur in practice can be safely balanced.

In the state of the art, as it emerges from the DE 43 23 953 C2 results, such position tolerances are compensated for by the fact that the inner conductor contact part provided in the fitting penetrates more or less deeply into the hollow inner conductor of the corrugated tube cable with a spring bushing. However, it can lead to an electrical loop formation, which is undesirable because it deteriorates the high-frequency transmission behavior of the valve. In addition, it is difficult to insert the inner conductor contact part into the hollow inner conductor of the corrugated tube cable if its inner conductor is a tube with an internal thread. All of these problems can be avoided if you can reliably contact the inner conductor of the corrugated pipe at the end. This is exactly what the present invention does, automatically when the corrugated tube cable is inserted into the fitting, which is particularly noteworthy because the process of contacting the inner conductor cannot be monitored by observation.

For the specific training of the combination of a fixed position Inner conductor contact part and resiliently attached attachment part there are different options. A particularly affordable option is that the attachment part is a wreath of contact fingers has, which extend forward, i.e. in the direction against that front end of the fitting, and that the inner conductor contact part has a lateral surface, on which the contact fingers slide resiliently pressed. Such an embodiment not only allows the attachment part to be moved relative to the fixed inner conductor contact part in the direction of the longitudinal axis of the fitting, but also allows a change the inclination of the attachment part against the longitudinal axis of the valve, if necessary under Extension of the wreath of contact fingers. Which is beneficial because not only inaccuracies in the direction of the longitudinal axis, but also an axial offset between the inner conductor of the coaxial Cable and the inner conductor contact part of the fitting are balanced can.

The described embodiment can be modified by partially reversing the functions so that that it is the inner conductor contact part that has a wreath of Has contact fingers, which in this case extend backwards, and that the attachment part has a lateral surface on which the contact fingers slide with spring pressure.

In both cases it is preferred that the contact fingers on the outside the lateral surface. Movable around the attachment part, but captive on the held To keep inner conductor contact part, it is preferred that the contact fingers have at their tip a projection directed against the lateral surface and that the outer surface at its rear end, one against the contact fingers Has collar so that the restoring force at most, the extension can slide until the protrusions Push the contact finger against the collar of the outer surface. An unintentional falling off of the This is not the end part of the inner conductor contact part possible.

The restoring force can be controlled by a Spiral spring exercised are clamped in the cage formed by the ring of contact fingers and the outer surface is. The lateral surface, on which the contact fingers slide resiliently can be cylindrical his. An easier way the restoring force to generate is given in a preferred embodiment in which the lateral surface one along the long axis has increasing diameter, so when the attachment is facing forward, this means is pushed towards the front end of the valve, the Wreath of contact fingers in the direction of increasing diameter of the lateral surface is moved and progressively spread, causing the restoring force increases. The use of a helical spring can be used in this embodiment to be dispensed with. However, a helical spring can also as in the case of a cylindrical lateral surface, can be used to the restoring force to increase.

Since the extension part relative to the inner conductor contact part make a tumbling motion can it is desirable the attachment part automatically to be able to center on the inner conductor of the coaxial cable. To this purpose is for a coaxial cable with a hollow inner conductor preferably provided that the attachment part an introductory part to introduce in the hollow inner conductor of the cable and a stop part for attaching at the front edge of the inner conductor of the cable. The insertion part has at its tip a diameter which is adapted to the design certain extent of The wobble of the attachment part is so slight that the attachment part definitely still find its way into the hollow inner conductor of the cable place. Nlatürlich When designing the valve, make sure that the extent of the wobble movement, which one makes constructively possible for the attachment part is not so large that the introductory part can no longer find the way into the hollow inner conductor of the cable, because the axial offset between the two may have become too large is.

A cheap way to train the attachment part, is that its introductory part Outside is conical, the contact being made by the conical insertion on the inner edge of the front edge of the hollow inner conductor of the cable strikes. This presupposes that the cone must have an outside diameter, some of which is smaller and partly larger than the inside diameter of the inner conductor of the cable.

In another advantageous embodiment is the outside diameter of the insertion part not bigger than the inside diameter of the hollow inner conductor of the cable and it closes to the insertion part a stop part, in particular a collar, which flat on strikes the front edge of the hollow inner conductor of the cable.

Instead of an externally conical insertion part, an externally spherical insertion part could also be used, which is also suitable for automatically centering on the hollow inner conductor of a cable and for it on the inner edge of its front Contact Randes.

In another embodiment has the insertion part a lateral surface, the envelope of which is cylindrical is and has a chamfer at its tip, which an insertion of the insertion relieved in the hollow inner conductor of the cable. The introductory part can a cylindrical surface have he could but also have a corrugated or ribbed outer surface that is made in one version an elastomeric material a seal of the inner conductor of the enables coaxial cable.

In another embodiment the stop part has a second ring of contact fingers, which extends towards the tips of the contact fingers, which for making contact on the face of the hollow inner conductor of the coaxial Cable determined and therefore oblique are directed towards the rear. The diameter on which the Wreath of contact fingers opens, is on the diameter of the hollow inner conductor of the coaxial cable to coordinate so that contact is made on the end face.

In another embodiment the invention are the introductory part and the stop part resiliently connected to one another, for example via a Coil spring. The advantage is an easier balance of axial offset between the stop part and the inner conductor of the coaxial cable and proven even with an inhibition of the insertion of the insertion part into the hollow inner conductor of the coaxial cable.

An expanding wreath of contact springs for making contact on the face of the hollow inner conductor of the coaxial However, the cable can also be provided directly on the extension part without an additional insertion to use because such a wreath of contact fingers because of the Compliance of its contact fingers automatically positioning inaccuracies can compensate.

The inventive design of the means for Inner conductor contacting has in its various embodiments essential advantages:

• - The Contact is made on the front edge of the inner conductor of the coaxial Cable, especially on its flat face.
• - The Forehead contact is independent on the geometry of the inner cable.
• - inaccuracies in position and orientation of the inner conductor of the coaxial cable and the valve become automatic balanced.
• - It always gives a springy contact pressure
• - The contact resistance stays small.
• - The Contact is made at a clear reference level.
• - One electrical loops are avoided.
• - The RF transmission behavior is good.
• - Unwanted intermodulation are minimized.
• - The Assembly effort and assembly time are minimal.

Embodiments of the invention are included in the Drawings shown. It is in all examples Fittings for coaxial corrugated pipe cable with hollow inner conductor. In the different embodiments are the same and corresponding parts with the same Reference numbers designated.

1 shows a fitting according to the invention in a longitudinally cut oblique view,

2 shows a plate spring inserted in the valve in a side view,

3 shows the disc spring 2 in a top view,

4 shows the disc spring 2 in an oblique view,

5 shows a side view of a front section of a corrugated pipe cable prepared for the assembly of the fitting,

6 shows the valve half in a side view and half in longitudinal section, before the insertion of the corrugated pipe cable,

7 shows the fitting in a representation corresponding to the 6 with partially inserted corrugated cable,

8th shows the fitting in a representation corresponding to the 6 with fully inserted corrugated pipe cable,

9 shows enlarged as a detail, half in a side view and half in longitudinal section, the rear part of the inner conductor contact part used in the fitting with attached attachment part, before contacting the hollow inner conductor of the corrugated tube cable,

10 shows in a representation corresponding to the 9 the same elements, but after contact has been made on the inner conductor of the corrugated cable,

11 shows in a representation corresponding to the 10 the conditions in the event of a misalignment between the inner conductor of the corrugated pipe cable and the inner conductor contact part of the fitting,

12 shows in a representation corresponding to the 10 a variant of the combination of inner conductor contact part and extension part,

13 shows in a representation corresponding to the 10 another variant of a combination of an inner conductor contact part and an extension part,

14 shows in a representation corresponding to the 10 another variant of a combination of an inner conductor contact part and an extension part.

15 shows in a representation corresponding to the 10 another variant of a combination of an inner conductor contact part and an extension part.

16 shows in a representation corresponding to the 10 another variant of a combination of an inner conductor contact part and an extension part.

17 shows in a representation corresponding to the 10 another variant of a combination of an inner conductor contact part and an extension part and

18 shows in a representation corresponding to the 10 another variant of a combination of an inner conductor contact part and an extension part.

In the 1 shown fitting has a one-piece housing 1 made of metal. Instead of metal, the housing could also consist of metallized plastic. Approximately in the middle of the case 1 is a radially inwardly jumping shoulder on the inside of the peripheral wall of the housing 2 trained, in front of which an annular stop 3 is arranged. Between the stop 3 and the shoulder 2 is an annular spring 4 arranged, which is a corrugated disc spring, as in the 2 to 4 is shown in different views. The ring-shaped stop 3 has a cylindrical extension 5 , which is on the inner edge of the spring 4 over against the shoulder 2 extends and is shorter than the thickness of the relaxed disc spring 4 , so that the disc spring is relaxed 4 the extension 5 not reached the shoulder.

The attack 3 divides the housing into a rear section 1a and in a front section 1b , In the back section 1a is in the neighborhood of the attack 3 in the peripheral wall of the housing 1 an annular groove 6 , in which a snap ring 7 is arranged.

Also in the back section 1a of the housing a sleeve 8th arranged which in its front section 1b through a wreath of longitudinal slots into a wreath of fingers 9 is divided, which are equal in length to each other and at its front end a crest 10 have, which in the direction of the longitudinal axis 11 of the housing 1 protrude. The front section of the fingers 9 is opposite their rear section 9a thickened and on the outside with a second ring groove 12 provided, which is dimensioned in width and depth so that it the projecting part of the snap ring 7 can record. The rear, unslit part of the sleeve 8th is divided into a thicker front section 13 and a thinner rear section 14 , Between these two sections 13 and 14 is a step-like paragraph 15 educated. The inside diameter of the rear section 14 is the outside diameter of the sheath of the corrugated pipe cable ( 5 ) customized. In the front section 13 of the unslit part of the sleeve 8th there is a first annular groove with a trapezoidal cross section on the outside 16 in which convex protrusions 17 can immerse which near the rear edge of the housing 1 are formed on its wall, which for this purpose in an end section 18 of the housing 1 with reduced wall thickness.

For sealing the sleeve 8th towards the housing 1 is in the section 13 the sleeve on the outside another ring groove with an O-ring 19 , For sealing the sleeve 8th opposite the corrugated pipe cable is in the section 13 the sleeve 8th on the inside another ring groove with an O-ring 20 ,

In the in 1 shown position of the sleeve 8th are their fingers 9 at some distance from the peripheral wall of the housing 1 so the fingers 9 can spring outwards. Immediately in front of the fingers 9 the clear width of the housing narrows 1 to a smaller diameter; there is a conical transition surface between the section with the larger clear width and the section with the smaller clear width 21 ; the section adjoining them with less clear width carries and guides the annular stop 3 ,

In the front section 1b of the housing, which is opposite the rear section 1a has a significantly smaller clear width, is a cylindrical support body 22 made of electrically insulating material, in particular PTFE. In this support body 22 is a metallic inner conductor contact part 23 embedded in a form-fitting manner, in one to the longitudinal axis 11 coaxial arrangement. The inner conductor contact part 23 protrudes from the support body on both sides 22 out; the section projecting towards the front serves in a manner known per se to make contact with the inner conductor of a mating connector which cooperates with the fitting. The one from the back of the support body 22 protruding part of the inner conductor contact part 23 wears a neck part 24 , which is captive on the inner conductor contact part 23 held in the direction of the longitudinal axis 11 can be moved and tilted in all directions by an acute angle. The spring force acts so that it is the attachment part 24 towards the rear end of the case 1 tried to press.

The structure of the inner conductor contact part 23 and the related part of the approach 24 is also in the 9 to 11 shown. The one from the support body 22 protruding section of the inner conductor contact part 23 has an outer surface 26 , which initially tapers and then merges into a cylindrical section which is on a collar 25 ends, which is directed radially outward. Also contains the inner conductor contact part 23 a blind hole 27 which is open towards the back. The approach part 24 has a collar in the middle 28 , on the front of which a wreath 29 of contact fingers, which have radially inward projections at their tips 30 have which on the collar 25 strike, causing the attachment part 24 captive on the inner conductor contact part 23 is held. However, it can be deflected from the coaxial orientation (see 11 ), what for the wreath 29 of contact fingers is elastically expanded if necessary. The collar closes to the rear 28 a radially stepped conical section 31 which can be inserted into the hollow inner conductor of the corrugated tube cable and therefore also as an insertion part 31 referred to as. In the introductory part 31 there is a stepped hole 32 which is open towards the front.

In the graded hole 32 and the blind hole 27 as well as the wreath of contact fingers 29 formed cage is a coil spring 33 clamped against the restoring force the attachment part 24 the support body 22 can be approximated.

On the outside of the front section 1b there is a union nut on the housing 34 which is between an outer shoulder 35 and a snap ring 36 which is in a groove on the outside of the front section 1b is captive.

Under the union nut is against another outer shoulder 39 positioned, a sealing ring 38 , which becomes effective when the valve is connected to a mating connector.

The fitting shown fits a corrugated pipe cable 40 as it is in 5 is shown. It has a coat 41 which is on a corrugated pipe 42 made of metal. The corrugated pipe 42 has a regular succession of wave crests 43 and wave valleys 44 , In the corrugated pipe 42 a tubular inner conductor runs coaxially 45 which in 8th can be seen. Between the inner conductor 45 and the corrugated pipe 42 there is a dielectric material 46 , mostly made of a foam plastic, which is why it is also called a foam dielectric. The foam dielectric 46 extends on the outside of the inner conductor 45 down to the valleys 44 of the corrugated pipe 42 , please refer 8th , The corrugated pipe cable is used to prepare the assembly of the valve 40 in one to the longitudinal axis 11 right-angled plane cut bluntly and freed from the cable sheath for a predetermined length, see 5 ,

The 6 to 8th show three phases of assembly: 6 shows the valve before the corrugated pipe cable is inserted 40 ; the sleeve 8th is in its rear end position and looks a little further out of the housing 1 out. Then the corrugated cable 40 introduced meets the tops 10 the finger 9 , it bends radially outward so that the crests 10 the first wave crest 43 overcome, form-fitting in the first wave valley 44 compress and, as in 7 shown on the valley floor and against the next wave crest 43 leaned, come to rest. If the corrugated pipe cable is pushed forward 40 beats his coat 41 on the paragraph 15 the sleeve 8th and takes this with, the positive connection between the sleeve 8th and the convex protrusions 17 which in the second ring groove 16 the sleeve 8th lie, is overcome. The sleeve 8th and the corrugated pipe cable 40 move forward together against the annular stop 3 until it compresses the spring 4 with its extension 5 on the shoulder 2 strikes, see 8th , The first wave crest 43 against the attack 3 compressed and to form a flanged flange 47 unfolded. At the same time, the thickened end of the fingers 9 by means of an external inclined surface 9b over the snap ring 7 lifted, which then in the second ring groove 12 the finger 9 clicks into place, see 8th , The rear edges of the sleeve 8th and the housing 1 are now essentially flush with each other.

Simultaneously with the flaring flange 47 the inner conductor contact is made as with the 9 to 11 shown. 9 shows the front end of the corrugated tube 42 with part of the wall of the inner conductor 45 and part of the foam dielectric 46 when approaching the attachment part 24 , The approach part 24 penetrates when the corrugated pipe cable is pushed forward 40 into the tubular inner conductor 45 one until the collar 28 at the front edge of the inner conductor 45 strikes ( 10 ). Any misalignments can be compensated for, such as 11 illustrated because the attachment part 24 limited wobble on the inner conductor contact part 23 is held. The compression of the helical spring when contacting the inner conductor 33 in connection with the elastic spreading of the wreath 29 of contact fingers ensures the necessary contact pressure on the inner conductor 45 ,

This is the assembly of the valve terminated on the corrugated pipe cable.

This in 12 illustrated embodiment differs from that in 10 illustrated embodiment in that between the attachment part 24 and the inner conductor contact part 23 no helical spring is clamped. In this exemplary embodiment, the restoring force exerted on the attachment part is rather caused solely by the fact that the inner conductor contact part 23 on the back side of the support body 22 is tapered away from this, so that the wreath 29 of contact fingers when approaching the attachment part 24 to the support body 22 is resiliently expanded, which generates the repelling force.

This in 13 illustrated embodiment differs from that in 10 illustrated embodiment in that the inner conductor contact part 23 instead of a conical surface, a cylindrical surface 26 has and that the attachment part 24 on his the corrugated pipe cable 40 end facing no conical insertion part 31 but has an expanding wreath 48 of contact springs, which have a largest diameter, the diameter of the tubular inner conductor 45 is adjusted so that the contact springs of the wreath 48 resilient to the face of the inner conductor 5 can put on.

This in 14 illustrated embodiment differs from that in 13 illustrated embodiment in that instead of crown 48 a special introductory part 31 tumble but captive on one in the tubular inner conductor 45 protruding pin 49 is held.

This in 15 illustrated embodiment differs from that in 13 illustrated embodiment in that the attachment part 24 is conical and its conical surface on the inner edge of the front edge of the inner conductor 45 is applied.

This in 16 illustrated embodiment differs from that in 15 illustrated embodiment in that the attachment part 24 has a spherical surface instead of a conical surface.

This in 17 illustrated embodiment differs from that in 15 illustrated embodiment in that the conical neck part 24 still with an insertion part 31 is coupled, which is by means of a coil spring 50 deflectable with the stop part 51 of the attachment part 24 connected is.

This in 18 illustrated embodiment differs from that in 13 illustrated embodiment in that the wreath 48 of contact springs around an insertion part protruding beyond it 31 is supplemented, which has a corrugated outer surface with a cylindrical envelope, consists of an elastomeric plastic and the tubular inner conductor 45 can seal.

1.

casing

1a.

rear section of 1

1b.

front section of 1

Second

shoulder

Third

attack

4th

feather

5th

extension

6th

Ring groove in 1a

7th

snap ring

8th.

shell

9th

finger

9a.

rear section of 9

9b.

sloping surface

10th

knoll

11th

longitudinal axis

12th

Second ring groove

13th

front section of the unslit portion of 8th

14th

rear section of the unslit part of 8th

15th

Paragraph between 13 and 14

16th

1. ring groove

17th

crowned head Start

18th

end

19th

O-ring

20th

O-ring

21st

conical transition surface

22nd

support body

23rd

Inner conductor contact member

24th

extension part

25th

Collar 23

26th

Lateral surface of 23

27th

blind

28th

Collar 24 , Stop part

29th

wreath of contact fingers

30th

Ledges 29

31st

insertion

32nd

graded hole

33rd

coil spring

34th

Nut

35th

outer shoulder

36th

snap ring

37th

38th

seal

39th

Further outer shoulder

40th

Corrugated tube cable

41st

coat

42nd

corrugated pipe

43rd

Wellenberg

44th

trough

45th

inner conductor

46th

dielectric material

47th

bead flange

48th

Wreath of contact fingers 24

49th

pen

50th

coil spring

51st

stop part

Claims (18)

Armature for a coaxial cable, especially corrugated pipe cable ( 40 ) with a hollow inner conductor ( 45 ), the corrugated pipe ( 42 ) has an annular corrugated outer surface, with a housing ( 1 ), which has a longitudinal axis ( 11 ) has, and means ( 2 . 3 . 4 . 5 . 8th ) has the corrugated tube ( 42 ) in the housing ( 1 ) and to make electrical contact at its front edge and with an inner conductor contact part ( 23 ), which by means of an electrically insulating support body ( 22 ) in the front section ( 16 ) of the housing ( 1 ) held, centered and against the housing ( 1 ) is insulated, characterized in that that of the insulating support body ( 22 ) held inner conductor contact part ( 23 ) a rearward, ie the corrugated pipe cable ( 40 ) facing attachment part ( 24 ) which is captive on the inner conductor contact part ( 23 ) and in the direction of the longitudinal axis ( 11 ) can be moved forward against a restoring force. Fitting according to claim 1, characterized in that the extension part ( 24 ) a wreath of contact fingers ( 29 ) which extend forward and that the inner conductor contact part ( 23 ) a lateral surface ( 26 ) on which the contact fingers ( 29 ) slide with spring pressure. Fitting according to claim 1, characterized in that the inner conductor contact part is a ring of contact fingers, which extend to the rear, and that the extension part has a lateral surface on which the contact fingers slide in a spring-loaded manner. Fitting according to claim 2 or 3, characterized in that the contact fingers ( 29 ) on the outside of the outer surface ( 26 ) lie. Fitting according to one of claims 2 to 4, characterized in that the contact fingers ( 29 ) at their tip against the surface ( 26 ) directed projection ( 30 ) and that the outer surface ( 26 ) at its rear end against the contact fingers ( 29 ) directed collar ( 25 ) Has. Fitting according to one of claims 2 to 5, characterized in that the lateral surface ( 26 ) is cylindrical and between the inner conductor contact part ( 23 ) and its attachment part ( 24 ) in the wreath of the contact fingers ( 29 ) and the outer surface ( 26 ) formed cage a coil spring ( 33 ) is clamped. Fitting according to one of claims 2 to 5, characterized in that the lateral surface ( 26 ) one along the longitudinal axis ( 11 ) has increasing diameter. Fitting according to claim 7, characterized in that between the inner conductor contact part ( 23 ) and its attachment part ( 24 ) in the wreath of the contact fingers ( 29 ) and the outer surface ( 26 ) formed cage a coil spring ( 33 ) is clamped. Fitting according to one of claims 1 to 8 for coaxial cables with a hollow inner conductor, characterized in that the extension part ( 24 ) an introductory part ( 31 ) for insertion into the hollow inner conductor ( 45 ) of the corrugated pipe cable ( 40 ) and a stop part ( 51 ) for attaching to the front edge of the inner conductor ( 45 ) of the corrugated pipe cable ( 40 ) Has. Fitting according to claim 9, characterized in that the insertion part ( 31 ) is conical outside. Fitting according to claim 9, characterized in that the insertion part ( 31 ) is crowned on the outside. Fitting according to claim 9, characterized in that the insertion part ( 31 ) has a lateral surface, the envelope of which is cylindrical, with a chamfer at its tip for easier insertion into the hollow inner conductor ( 45 ) of the corrugated pipe cable ( 40 ). Fitting according to one of claims 1 to 12 for coaxial cables with a hollow inner conductor, characterized in that the stop part is a collar ( 25 ) is. Fitting according to claim 13, characterized in that the collar ( 25 ) to the insertion part ( 31 ) connects. Fitting according to claim 10 or 11, characterized in that the stop part on the insertion part ( 31 ) lies. Fitting according to claim 9, characterized in that the stop part has a second ring of contact fingers ( 48 ), which widens towards the fingertips, which for contacting on the face of the inner conductor ( 45 ) of the corrugated pipe cable ( 40 ) are determined and therefore directed obliquely backwards. Fitting according to one of claims 9, 12 and 13, characterized in that the insertion part ( 31 ) and the stop part ( 51 ) are resiliently connected. Fitting according to one of claims 1 to 8 for coaxial cables with a hollow inner conductor, characterized in that the extension part ( 24 ) a second ring of contact fingers ( 48 ), which widens towards the fingertips, which for contacting on the face of the inner conductor ( 45 ) of the corrugated pipe cable ( 40 ) are determined.