DE10357405A1 - Fitting for coaxial corrugated tube cable with annularly corrugated sleeve surface, contains housing with longitudinal axis and corrugated tube surrounding sleeve, slidable to front - Google Patents

Abstract

Fitting comprises housing (1) with longitudinal axis (11) and sleeve (8) surrounding corrugated tube, slidable from rear to front. In sleeve is formed ring of fingers (9) by longitudinal slits, with fingers containing round end heads (10) for engaging corrugation grooves.In housing is fitted annular stop (3) for front edge of corrugated tube and forwards moved sleeve. Inner conductor contact part (23) is held, centered and insulated from housing by insulating support body (22) in front section (16) of housing, which is integral, with sleeve fixed in axial direction in front end position.

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 joined together only by the process of mounting the corrugated cable. To install the valve, the corrugated cable is first cut blunt and freed from the cable sheath over part of its length. Then the housing rear part is pushed onto the cable sheath until the tips of the fingers of the sleeve strike the first wave crest of the corrugated tube. Therefore, a housing rear part has the outer diameter of the cable sheath adapted inner diameter. If you push the housing rear part with a little more force on the mantle, then the fingers spring outwards, so that their crests can overcome the first wave crest, whereupon they spring into the first wave trough. At the front end, the rear part of the housing has an inwardly projecting collar, which engages in a recess of a sleeve which has a plurality of longitudinal slots in a front portion through which fingers are formed, which have a tip at the front end, with which they in Wave trough of the corrugated tube intervene. The fact that the collar engages in the recess of the sleeve, this is trapped in the rear part of the housing. Because the recess in the sleeve in the axial direction is substantially wider than the collar of the housing rear part, the sleeve in the housing rear part is limitedly displaceable.

The Front part of the housing has a rear section whose inside diameter is the smallest Inner diameter of the corrugated tube matches. In the front part of the front housing part an inner conductor contact part is held in an insulating support. On her outside wear this Front housing a union nut, which on a matching external thread of the housing rear part is turned. Here, the first wave crest of the corrugated pipe is between the fingers of the sleeve clamped on one side and an annular abutment surface formed in the housing front part and folded by progressively turning the union nut; thereby At the front edge of the corrugated pipe, a flange is formed and the Corrugated tube both mechanically and electrically with the bolted together casing connected. At the same time the inner conductor contact part penetrates with a directed against the corrugated cable, radially resilient bush in the tubular Inner conductor of the corrugated pipe and provides the electrical contact for this.

adversely is that the assembly of the fitting an experienced and reliable working Mechanic requires. Otherwise, it may happen that the flare flange is not formed optimally and that related to the Inner conductor contact input and the outer conductor contact input not optimally done. This can lead to a deterioration of the HF transmission behavior lead the known fitting. Furthermore is the installation of the known valve time-consuming.

Of the present invention is based on the object, a valve for a Coaxial corrugated cable available to provide, which also experienced less with less effort Install fitters and design-related offers a greater guarantee that when mounting to a good electrical contact between the valve and the corrugated cable comes.

These Task is solved by a valve with the features specified in claim 1. advantageous Further developments of the invention are the subject of the dependent claims.

• – Das Gehäuse muß nicht erst auf der Baustelle aus zwei Teilen zusammengeschraubt werden, es kann vielmehr bereits von vorneherein einstückig gefertigt werden oder, wenn es in zwei Stücken gefertigt wird, bereits im Werk des Herstellers zu einem zusammenhängenden Teil zusammengesetzt werden.
• – Das erleichtert die Lagehaltung beim Anwender.
• – Verwechslungen von Gehäuseteilen beim Anwender sind ausgeschlossen.
• – Das Gehäuse kann auf der Baustelle nicht falsch zusammengesetzt werden.
• – In dem einteilig zusammenhängenden Gehäuse gibt es einen Anschlag, welcher gegen den vorderen Rand des Wellrohrs gedrückt wird, um dieses unter Ausbilden eines Bördelflansches zu falten und zugleich den erforderlichen elektrischen Kontakt zwischen dem Wellrohr und dem Gehäuse herzustellen. Die Lage dieses Anschlages hängt anders als bei der bekannten Armatur nicht davon ab, wie weit zwei Gehäuseteile miteinander verschraubt wurden, sondern ist unabhängig davon. Vielmehr kann das Wellrohrkabel in die Armatur gespresst werden, bis es nicht mehr weitergeht, das heißt, dass sich die Finger der Hülse und der Anschlag größtmöglich aneinander angenähert haben. Die größtmögliche Annäherung ist dann erreicht, wenn der vorderste Wellenberg des Wellrohrs dichtestmöglich zusammengefaltet ist; der Abstand zwischen den Fingern der Hülse und dem Anschlag beträgt dann das Zweifache der Wandstärke des Wellrohrs. Auf diese Weise kann sichergestellt werden, dass die Bildung des Bördelflansches und dessen elektrische Kontaktierung reproduzierbar in gleicher Güte erfolgen, was besonders wichtig ist, da man bei der Montage nicht sieht, was in der Armatur vor sich geht. Da die Lage des Innenleiterkontaktteils in der Armatur in einer festen räumlichen Beziehung zur Lage des Anschlages für das Wellrohr steht, die durch die konstruktiven Vorgaben und durch den Zusammenbau im Werk gegeben ist, ergibt sich zugleich mit einer reproduzierbaren Kontaktgabe am Wellrohr auch eine reproduzierbare Kontaktgabe am Innenleiter des Wellrohrkabels.
• – Die Tatsache, dass das Gehäuse einteilig zusammenhängt oder einstückig ausgebildet ist, erleichtert die Abdichtung der Armatur gegen das Eindringen von Feuchtigkeit.
• – Die reproduzierbare Kontaktgabe am Wellrohr sowie am Innenleiter des Wellrohrkabels führt zu reproduzierbaren Hochfrequenzübertragungseigenschaften.
• – Der neuartige Aufbau der Armatur vermeidet Montagefehler und damit auch Gewährleistungsansprüche.
• – Mit der neuen Kabelarmatur können Montagezeiten verkürzt und gleichzeitig die Prozesssicherheit erhöht werden.
• – Die Tatsache, dass das Gehäuse der Armatur bereits ab Werk einteilig zusammenhängt oder einstückig ausgebildet wird, erlaubt kleinere Abmessungen und eine höhere mechanische Belastbarkeit.
• – Das anzuschließende Wellrohrkabel muß für die Montage der Armatur nicht in besonderer Weise hergerichtet werden. Es genügt, wie im Stand der Technik das Wellrohrkabel plan abzuschneiden und dann auf einem vorgegebenen Teil seiner Länge vom Kabelmantel zu befreien.

In the fitting according to the invention, the housing is integrally connected, preferably in one piece, formed and the sleeve is in its front end position in the housing to avoid movement in the direction of the longitudinal axis positively lockable. This has significant advantages:

• - The housing does not have to be screwed together at the construction site of two parts, but it can be made in one piece from the outset or, if it is made in two pieces, already assembled in the factory of the manufacturer to a coherent part.
• - This facilitates the attitude of the user.
• - Confusion of housing parts with the user are excluded.
• - The housing can not be assembled incorrectly on the construction site.
• - There is a stop in the integrally connected housing, which is pressed against the front edge of the corrugated tube to fold this forming a flange and at the same time produce the required electrical contact between the corrugated tube and the housing. The position of this stop does not depend on how far two housing parts are screwed together, but is independent of the known valve. Rather, the corrugated pipe can be pressed into the fitting until it stops, that is, that the fingers of the sleeve and the stop have approached each other as much as possible. The greatest possible approximation is then achieved when the foremost wave crest of the corrugated tube is folded as close as possible; the distance between the fingers of the sleeve and the stop is then twice the wall thickness of the corrugated pipe. In this way it can be ensured that the formation of the flare and its electrical contact made reproducible in the same quality, which is particularly important because you do not see during assembly, what is going on in the fitting. Since the position of the inner conductor contact part in the valve is in a fixed spatial relationship to the position of the stop for the corrugated pipe, which is given by the design specifications and by the assembly in the factory, results in a reproducible contact with the corrugated pipe and a reproducible contact on the same time Inner conductor of the corrugated cable.
• - The fact that the housing is integrally connected or integrally formed, facilitates the sealing of the valve against the ingress of moisture.
• - The reproducible contact on the corrugated tube and the inner conductor of the corrugated cable leads to reproducible high-frequency transmission properties.
• - The new design of the valve avoids assembly errors and thus also warranty claims.
• - With the new cable fitting assembly times can be shortened while process reliability can be increased.
• - The fact that the housing of the valve already in one piece by the factory or integrally formed, allows smaller dimensions and higher mechanical strength.
• - The connected corrugated cable must not be prepared for the assembly of the valve in a special way. It is sufficient, as in the prior art, the corrugated cable cut off plan and then free on a predetermined part of its length from the cable sheath.

The for the Shapes of flare flange required force can be applied by a simple assembly tool become. The assembly tool may consist of a receptacle for the fitting with a hard stop for the one end of the valve and with a contrast in the direction of the longitudinal axis the fitting movable plunger between which the fitting with its front end and the sleeve of the fitting with its rear End clamped and then be brought together until it stops continues. This may be achieved by hand by means of a toggle mechanism. A different possibility is to move the stamp by means of a spindle. The spindle could in turn with a conventional one electrically operated screwdriver, for example with a cordless screwdriver, actuated become. For industrial assembly, the stamp could also with a Compressed air cylinder or driven by a hydraulic cylinder.

To the Mounting the fitting you can get the prepared corrugated cable first in the sleeve Push the fitting until the tips of the fingers of the sleeve in the spring in the first wave trough of the corrugated tube. The sleeve is then captive with connected to the corrugated pipe. In front of the sleeve lies a wave mountain, from which the flare flange can be formed. This is the corrugated cable from the back in the case the fitting introduced and pressed against the stop formed in it until it stops continues.

If here in connection with the case the mixer is talked about "behind" and "front", so is referred to as the rear portion of the fitting of those in which the corrugated cable is inserted. The front section of the fitting is that section in which the electrically insulating support body and held by this firmly in the housing arranged inner conductor contact part of the fitting are located.

is by pressing the corrugated cable against the housing in the Armature formed stop the flare flange formed, then becomes the sleeve under perpetual Pressure on the stop in the housing the valve form-fitting established. The positive locking prevents the sleeve to slide out of the back of the case. Because the fingers of the sleeve in turn, form-fitting engaging in the first wave trough of the corrugated tube is in this way the corrugated cable is fixed in the fitting or the fitting tensile strength fixed on the corrugated pipe.

The positive connection between the housing and the sleeve in its front end position can be formed in different ways. A favorable possibility is that the sleeve on its outer side in the front region of its fingers has an annular groove, referred to in claim 9 as a second annular groove, in which in the front end position of the sleeve at least one of the peripheral wall of the housing inwardly projecting part can engage , The protruding part may be an annular rib which is formed by forming a groove in the peripheral wall of the housing from the outside. This can be done by an additional tool, which is integrated into the mounting device and after pressing the cable into the fitting is used. Another possibility is to press the housing of the fitting from the outside at some circumferentially distributed places something, resulting in on the inside of the order fangswand yield projections which engage in the annular groove of the sleeve. Such projections can also be formed by an additional tool integrated in the mounting device.

Especially however, preferred is the use of a snap ring, which received in an annular groove in the inside of the peripheral wall of the housing is. Since the snap ring can resiliently expand, the Finger of the sleeve when pressing the corrugated cable into the fitting in the snap ring penetrate, widen it and continue to penetrate until the snap ring after all snaps into the annular groove, which in the front area of the fingers the sleeve is provided. The position of the annular groove in the front area of the fingers the sleeve and the location of the snap ring in the annular groove of the peripheral wall of the housing to coordinate so that the sleeve in any case until complete formation the flare flange can be advanced. The use of such a snap ring is particularly cheap because the positive locking, which the tensile connection between the corrugated pipe and the Armature manufactures, when pressing the cable into the fitting automatically comes. The mounting of the cable fitting on the corrugated pipe is then child's play: insert the corrugated tube cable into the sleeve and with it into the housing, advance, until it does not go on, done!

A similarly favorable installation method allows a different design of the fitting, in which in the front End position of the sleeve the back end of the case the fitting something over the rear end of the sleeve protrudes and the housing starting from its rear end two or more than two longitudinal slots has, by which fingers are formed, which with radially inwardly projecting crests springy on the outside the sleeve slide while these in the case is advanced until finally behind the rear edge the sleeve inwards feathers and thus fix the front end position of the sleeve form fit.

A another, but less elegant option is the length the sleeve so to choose that the rear end of the case in the front end position of the sleeve a little over the rear edge of the sleeve protrudes and the rear edge of the housing after pressing the Corrugated cable inward to bead and thereby the sleeve to fix positively in their front end position.

In a particularly preferred embodiment The invention is the sleeve for the Faucet not included as a loose part, but is located already in the rear section of the housing of the fitting, where they are between trapped a rear end position and its front end position and is slidable, with the housing in its rear section where the fingers are located in the rear end position of the sleeve, the fingers a greater distance from the peripheral wall of the housing as in its forward end position, so that when inserting the Corrugated tube radially outward can spring. This embodiment has the great advantage that the fitter can handle a valve at the construction site, which formed from the outset coherently with all its parts is. The fitter only has to grab the valve, push it onto the prepared corrugated cable, squeeze the two until it stops, done!

At the Introduce of the corrugated cable into the sleeve can their fingertips over Move away the first wave crest of the corrugated tube, because that is the casing in the rear end position of the sleeve the for a rebound of the wreath provides the fingers with the necessary clearance. The for overcoming the first wave crest of the corrugated tube required force can be catch the one in the rear end position of the fitting over the rear End of the case holding the protruding rear portion of the sleeve while holding the corrugated tube cable in the sleeve einschiebt until their fingertips engage in the first wave trough.

A more elegant way to absorb the force that must be applied during insertion of the corrugated cable to overcome the fingertips with the first wave crest, is that the sleeve is held in its rear end position by a surmountable positive engagement. The surmountable positive locking is designed so that the force required to overcome it is greater than the force that must be applied when the fingertips of the sleeve overcome the first crest of the corrugated tubing. In this embodiment, the installer does not even hold the sleeve during insertion of the corrugated cable. The valve is delivered so that the sleeve is in its rear end position. When the corrugated pipe is inserted from behind into the fitting, the cable first reaches the crests of the fingers of the sleeve, which are spread on further advancement of the corrugated cable, so that they overcome the first wave crest of the corrugated pipe and positively spring into the first wave trough. Upon further advancement of the corrugated cable, for example, characterized in that the jacket of the corrugated cable strikes a shoulder of the sleeve, taken the sleeve and overcome the surmountable positive engagement. The corrugated cable is pressed with its corrugated tube against the intended stop, thereby forming the flange and the sleeve finally fixed in a form-fitting manner in its front end position. So the installer only has to take the valve on the construction site put in corrugated cable, push it until it does not go any further, ready! It's that easy.

The surmountable Positive locking can be formed by the sleeve on its outside a first annular groove, in which in the rear end position at least engages a located on the inside of the peripheral wall of the housing projection. The cross-sectional shape of the annular groove and the shape of the projections determine how big the Resistance is what an overcoming is opposed to the positive connection. To facilitate overcoming has the first groove preferably not at right angles to the longitudinal axis the armature running flanks, but obliquely to the longitudinal axis extending flanks, leaving the protrusions over an oblique surface the first groove can slide out. About that It also makes it easier to overcome the problem Positive locking when the projections one in longitudinal section aslant against the longitudinal axis inclined or arched surface to have. Suitable are convex elevations, which from the outside in the peripheral wall of the housing depressed can be.

The first annular groove, which with the projections to form the überwindbaren Form-fit to work together, is preferably in unslotted section of the sleeve, preferably at such a position that they are in the rear end position the sleeve near the rear edge of the case lies. That makes it possible by a special design of the rear portion of the housing a defined overcoming to facilitate the positive connection, for example by the fact that the rear section of the housing, where mechanical stability is no longer crucial. with reduced wall thickness is formed, so that the projections under bending of the rear Section of the housing more easily slide out of the receiving them first annular groove of the sleeve can. This can be further supported by that the case slotted from the rear end to the projections, so that the projections on tongues or on short fingers, which are a little bit behind Outside can spring.

If the sleeve is set in its front end position by between the front ends of their fingers and the housing made a positive connection is, then it is particularly favorable if the sleeve is dimensioned so that they in their front end position with the rear edge of the housing flush concludes. This allows the fitter additionally an easy way determine that the assembly process is complete.

Of the annular Stop against which the corrugated tube is pressed during assembly, is preferably in front of a housing formed in the interior, the sleeve facing, annular shoulder arranged and it is located between the shoulder and the stop one in the longitudinal direction yielding spring, which makes it possible that the stop softens a little springy during assembly. This has the advantage of inaccuracies in trimming and preparing the front end of the corrugated tubing cable occur automatic can be compensated without that for a reliable one Contacting required pressure between the stop and the flare flange get lost. The spring that for is used this purpose is suitably annular, especially as a plate spring. Particularly favorable is a corrugated plate spring, which is well suited for compensating bevel cuts.

Preferably has the ring-shaped Stop at least one axial extension, which is shorter than the relaxed spring and which past the spring against the shoulder in the case is directed. This has the advantage that the forces applied when flanging Need to become, do not overload the spring can, but directly, bypassing the spring, introduced into the shoulder of the housing become.

In Advantageous development of the invention carries that of the insulating Support body held Inner conductor contact part a backward, that is the corrugated cable facing attachment part, which held captive on the inner conductor contact part and in the direction of the longitudinal axis against a restoring force is displaceable forward. This has the advantage of being hollow Inner conductor of the corrugated cable can reliably contact the front side. Variations in the position of the front edge of the inner conductor of the Corrugated cable can be compensated by the approach part against a restoring force can dodge towards the front end of the case when the inner conductor of the corrugated cable when pressed into the housing the approach part hits. For this purpose, the attachment part is positioned in the housing, that it is also in the practically occurring worst case, in which the inner conductor of the corrugated cable is too far behind, on each Fall still on the approaching part and advances it, the Way by which the neck part can be moved, just like that can be measured that the emerging in practice position tolerances can be safely compensated.

In the state of the art, as he is from the DE 43 23 953 C2 results, such positional tolerances are compensated for by the fact that provided in the fitting inner conductor contact part with a spring bushing penetrates more or less deeply into the hollow inner conductor of the corrugated pipe cable. That can however lead to electrical looping, which is undesirable because it degrades the high frequency transmission behavior of the fitting. In addition, insertion of the inner conductor contact part into the hollow inner conductor of the corrugated cable is difficult if its inner conductor is an internally threaded tube. All these problems are avoided if one manages to contact the inner conductor of the corrugated cable reliably frontally. This is exactly what the described development of the present invention, namely automatically when pressing the corrugated cable into the fitting, which is particularly remarkable, because you can control the operation of the inner conductor contact as little as the process of Außenleiterkontaktgabe by visual inspection.

For the concrete Forming the combination of firmly positioned inner conductor contact part and spring attached thereto attachment part, there are different Options. A very cheap option is that the attachment part a wreath of contact fingers has, which extend forward, so in the direction of the 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 moving the attachment part over the solid inner conductor contact part in the direction of the longitudinal axis of the valve, but also allows a change the inclination of the attachment part against the longitudinal axis of the fitting, if necessary under Extension of the ring of contact fingers. That's an advantage because not only positional inaccuracies in the direction of the longitudinal axis, but also an axial offset between the inner conductor of the corrugated cable and the inner conductor contact part of the valve can be compensated.

The described embodiment can be modified by partially reversing the functions that it is the inner conductor contact part, which is a wreath of Contact fingers, which in this case extend backwards, and that the attachment part has a lateral surface on which the contact fingers glide resiliently pressed.

In both cases It is preferred that the contact fingers on the outside the lateral surface lie. To the attachment part displaceable, but captive on the detained Inner conductor contact part to hold, it is preferred that the contact fingers have at their top a directed against the lateral surface projection and that the lateral surface at its rear end directed against the contact fingers Collar has, so the restoring force the attachment part can at most push so far until the projections of the Push contact fingers against the collar of the lateral surface. An unintentional drop in the Approach part of the inner conductor contact part is not in this way possible.

The Restoring force can be exercised by a spiral spring, which in the of clamped the cage formed by the rim of the contact fingers and the lateral surface is. The lateral surface, on which the contact fingers slide resiliently, it can be cylindrical be. An easier way the restoring force is to be generated in a preferred embodiment in which the lateral surface one along the longitudinal axis has increasing diameter, so that when the attachment part forward, this means in the direction of the front end of the fitting, which is pushed Wreath of contact fingers in the direction of the increasing diameter of the lateral surface moved and progressively spread, causing the restoring force increases. On the use of a coil spring can in this embodiment be waived. However, a spiral spring can also in this case, as in the case of a cylindrical surface, be used to the restoring force to increase.

There the attachment part relative to the inner conductor contact part a tumbling Perform movement may, it is desirable the attachment part automatically center on the hollow inner conductor of the corrugated cable. To For this purpose, it is preferably provided that the attachment part a insertion for insertion in the hollow inner conductor of the corrugated cable and a stop part for striking the front edge of the inner conductor of the corrugated cable Has. The insertion part has at its tip a diameter which is adapted to the constructively certain extent of Tumbling motion of the attachment part is so small that the attachment part In any case, still his way into the hollow inner conductor of the corrugated cable place. Naturally When designing the valve, make sure that the Extent of Wobbling, which allows the attachment part constructive, is not that big that the insertion part the way into the hollow inner conductor of the corrugated cable no longer You may find this because of the axial offset between the two too big is.

A favorable Possibility, form the attachment part, is that its insertion part outside conical is, wherein the contact is made by the fact that the conical insertion part the inner edge of the front edge of the inner conductor of the cable strikes. The assumes that the cone must have an outer diameter, partly smaller and partly larger as the clear width of the inner conductor of the corrugated cable.

In another advantageous embodiment, the outer diameter of the insertion part is not greater than the inside diameter of the inner conductor of the well Tubing and it connects to the insertion of a stop member, in particular a collar, which abuts flat on the front edge of the inner conductor of the corrugated cable.

Instead of one outside conical introducer could as well an outside spherical insertion part used, which is also suitable for self-acting on center the inner conductor of the corrugated cable and attach it to the Contact inner edge of its front edge.

In another embodiment has the insertion part a lateral surface, their envelope cylindrical is at the top and has a bevel, which is an introduction of the insertion facilitated in the hollow inner conductor of the corrugated cable. The insertion part can a cylindrical surface but he could also have a corrugated or ribbed lateral surface, which in one embodiment an elastomeric material, a seal of the inner conductor of the coaxial Cable allows.

In a further embodiment the abutment part has a second ring of contact fingers, which widens towards the tips of the contact fingers, which for contacting at the front side of the inner conductor of the corrugated cable determined and therefore oblique are directed to the rear. The diameter on which the Wreath of contact fingers opens, is to be adjusted to the diameter of the inner conductor of the corrugated cable, so that on the front side of a contact takes place.

In a further embodiment The invention relates to the insertion part and the stop member resiliently connected to each other, for example via a Coil spring. The advantage is in a lighter balance of axial offset between the stop member and the inner conductor of Corrugated cable and proven even with an inhibition of insertion of the insertion in the hollow inner conductor of the corrugated cable.

One expanding wreath of contact springs for contacting at the Front side of the inner conductor of the corrugated cable can also directly be provided on the attachment part, without an additional insertion use because such a wreath of contact fingers because of the compliance his contact fingers automatically Can compensate for positioning inaccuracies.

• – Die Kontaktierung erfolgt am vorderen Rand des Innenleiters des Wellrohrkabels, insbesondere an der planen Stirnfläche.
• – Der Stirnkontakt ist unabhängig von der Geometrie des Kabelinnenleiters.
• – Ungenauigkeiten in Lage und Ausrichtung werden selbsttätig ausgeglichen.
• – Es gibt stets einen federnden Kontaktdruck
• – Der Übergangswiderstand bleibt klein.
• – Die Kontaktgabe erfolgt an einer eindeutigen Bezugsebene.
• – Eine elektrische Schleifenbildung wird vermieden.
• – Das Hochfrequenzübertragungsverhalten ist gut.
• – Unerwünschte Intermodulation werden minimiert.
• – Der Montageaufwand und die Montagezeit sind minimal.

The inventive design of the means for Innenleiterkontaktgabe has significant advantages in their various embodiments:

• - The contacting takes place at the front edge of the inner conductor of the corrugated cable, in particular on the flat end face.
• - The front contact is independent of the geometry of the cable inner conductor.
• - Inaccuracies in position and orientation are compensated automatically.
• - There is always a resilient contact pressure
• - The contact resistance remains small.
• - The contact is made at a unique reference level.
• - An electrical looping is avoided.
• - The high frequency transmission behavior is good.
• - Unwanted intermodulation is minimized.
• - The assembly effort and assembly time are minimal.

embodiments The invention are in the attached Drawings shown. In the various embodiments are equal and corresponding parts with matching Reference numbers designated.

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

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

3 shows the plate spring 2 in a plan view,

4 shows the plate spring 2 in an oblique view,

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

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

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

8th shows the fitting in a representation according to the 6 with completely inserted corrugated 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 thereto neck part, before contacting the hollow inner conductor of the corrugated cable,

10 shows in a representation entspre the 9 the same elements, but after making contact with the inner conductor of the corrugated cable,

11 shows in a representation according to the 10 the conditions in the case of a misalignment between the inner conductor of the corrugated pipe cable and the inner conductor contact part of the valve,

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

13 shows in a representation according to the 10 a further variant of a combination of an inner conductor contact part and an attachment part,

14 shows in a representation according to the 10 a further variant of a combination of an inner conductor contact part and an attachment part,

15 shows in a representation according to the 10 a further variant of a combination of an inner conductor contact part and an attachment part,

16 shows in a representation according to the 10 a further variant of a combination of an inner conductor contact part and an attachment part,

17 shows in a representation according to the 10 a further variant of a combination of an inner conductor contact part and a neck part and

18 shows in a representation according to the 10 a further variant of a combination of an inner conductor contact part and an attachment part.

In the 1 shown fitting has a one-piece housing 1 made of metal. Instead of metal, the housing could also be made of metallized plastic. Approximately in the middle of the case 1 is on the inside of the peripheral wall of the housing a radially inwardly jumping shoulder 2 formed, 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 plate spring, as in the 2 to 4 is shown in different views. The annular stop 3 has a cylindrical extension 5 which is located at the inner edge of the spring 4 over against the shoulder 2 extends and is shorter than the thickness of the relaxed plate spring 4 , so with a relaxed diaphragm spring 4 the extension 5 not reached the shoulder.

The stop 3 divides the housing into a rear section 1a and in a front section 1b , In the back section 1a is located in the neighborhood of the stop 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 their front section 1b through a wreath of longitudinal slots in a wreath of fingers 9 is divided, which are equal to each other and at its front end a dome 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 her rear section 9a formed thickened and on its outside with a second annular groove 12 provided, which is dimensioned in width and depth so that they are the projecting part of the snap ring 7 can record. The rear, unslotted part of the sleeve 8th is divided into a front, thicker section 13 and a thinner rear section 14 , Between these two sections 13 and 14 is a stepped step 15 educated. The inner diameter of the rear section 14 is the outer diameter of the jacket of the corrugated cable ( 5 ) customized. In the front section 13 the unslotted part of the sleeve 8th is located on the outside of a trapezoidal in cross-section first annular groove 16 into which crowned projections 17 can dip, which is near the rear edge of the housing 1 are formed on the wall, which for this purpose in an end portion 18 of the housing 1 lie with reduced wall thickness.

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

In the in 1 illustrated 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 to the outside. Immediately before the fingers 9 narrows the clear width of the housing 1 on a smaller diameter; between the section with the larger clear width and the section with the smaller clear width is a conical transition surface 21 ; the adjoining section with a smaller inside diameter carries and leads the annular stop 3 ,

In the front section 1b of the housing, which is opposite the rear section 1a a has significantly smaller inside diameter, is a cylindrical support body 22 made of electrically insulating material, in particular made of PTFE, anchored. 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 protruding forward section is used in a conventional manner the contact with the inner conductor of a cooperating with the fitting mating connector. The from the back of the support body 22 outstanding part of the inner conductor contact part 23 carries a neck part 24 which is captive on the inner conductor contact part 23 held, in the direction of the longitudinal axis 11 slidable and tiltable at an acute angle in all directions. 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 associated approach part 24 is also in the 9 to 11 shown. The from the supporting body 22 projecting portion of the inner conductor contact part 23 has a lateral surface 26 , which initially tapers and then merges into a cylindrical section, which on a collar 25 ends, which is directed radially outward. In addition, contains the inner conductor contact part 23 a blind hole 27 , which is open to the rear. The attachment part 24 has a collar in the middle area 28 , on which a wreath to the front 29 of contact fingers connects, which at their tips radially inwardly directed projections 30 have that 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 out of the coaxial orientation (see 11 ), why the wreath 29 If necessary, elastically widened by contact fingers. At the back closes to the collar 28 a radially stepped conical section 31 on, which can be inserted into the hollow inner conductor of the corrugated cable and therefore as an insertion 31 referred to as. In the insertion part 31 there is a stepped hole 32 which is open to the front.

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

On the outside of the front section 1b of the housing is a union nut 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 lies captive.

Under the union nut is located, against another outer shoulder 39 positioned a sealing ring 38 which becomes effective in connection of the fitting with a mating connector.

The illustrated fitting 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 tube 42 has a regular series of wave crests 43 and troughs 44 , In the corrugated tube 42 runs coaxially a tubular inner conductor 45 which is in 8th can be seen. Between the inner conductor 45 and the corrugated tube 42 there is a dielectric material 46 , Mostly formed from a foam plastic, which is why it is also referred to as a foam dielectric. The foam dielectric 46 extends to the outside of the inner conductor 45 to the valleys 44 of the corrugated pipe 42 , please refer 8th , The corrugated pipe cable prepares to assemble the fitting 40 in one to the longitudinal axis 11 truncated right-angled plane and freed at a predetermined length from the cable sheath, see 5 ,

The 6 to 8th show three phases of assembly: 6 shows the valve before inserting the corrugated cable 40 ; the sleeve 8th is in its rear end position and still looks a little way out of the case 1 out. Then the corrugated pipe becomes 40 introduced, hits the knolls 10 the finger 9 , she bends radially outward, leaving the crests 10 the first wave mountain 43 overcome, positively in the first wave trough 44 to spring in and, as in 7 represented, on the valley floor and against the next wave mountain 43 leaned, come to rest. For further advancement of the corrugated pipe cable 40 beats his coat 41 at the heel 15 the sleeve 8th and takes this, with the positive connection between the sleeve 8th and the crowned protrusions 17 which is in the second annular groove 16 the sleeve 8th lie, is overcome. The sleeve 8th and the corrugated pipe 40 move forward together against the annular stop 3 until this under compression of the spring 4 with his extension 5 on the shoulder 2 strikes, see 8th , This is the first wave mountain 43 against the attack 3 upset and to form a flare 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 annular groove 12 the finger 9 snaps, see 8th , The rear edges of the sleeve 8th and the housing 1 now close substantially flush with each other.

Simultaneously with the unfolding of the crimping flange 47 the Innenleiterkontaktgabe takes place as based on the 9 to 11 shown. 9 shows the front end of the corrugated tube 42 with a part of the wall of the inner conductor 45 and part of foam dielectric 46 when approaching the attachment part 24 , The attachment part 24 penetrates further advancement of the corrugated cable 40 in the tubular inner conductor 45 one, until the collar 28 at the front edge of the inner conductor 45 strikes ( 10 ). In this case, any misalignments can be compensated, 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 occurring in the inner conductor contacting 33 in conjunction with the elastic spreading of the wreath 29 Contact fingers provide the necessary contact pressure on the inner conductor 45 ,

Herewith the assembly of the valve on the corrugated cable is finished.

This in 12 illustrated embodiment differs from the in 10 illustrated embodiment in that between the attachment part 24 and the inner conductor contact part 23 no coil spring is clamped. In this 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 backward facing side of the support body 22 formed by this tapering off, so that the wreath 29 of contact fingers when approaching the neck part 24 to the support body 22 is resiliently expanded, which generates the restoring force.

This in 13 illustrated embodiment differs from the in 10 illustrated embodiment in that the inner conductor contact part 23 instead of a conical lateral surface, a cylindrical lateral surface 26 has and that the attachment part 24 at his the corrugated pipe 40 facing end no conical insertion 31 has, but a widening 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 front side of the inner conductor 5 can create.

This in 14 illustrated embodiment differs from the in 13 illustrated embodiment in that instead of the wreath 48 a special introduction part 31 wobble, but captive on one in the tubular inner conductor 45 protruding pen 49 is held.

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

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

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

This in 18 illustrated embodiment differs from the in 13 illustrated embodiment in that the garland 48 of contact springs to a protruding beyond him insertion part 31 is supplemented, which has a corrugated lateral 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

2

shoulder

3

attack

4

feather

5

extension

6

Ring groove in 1a

7

snap ring

8th

shell

9

finger

9a

rear section of 9

9b

sloping surface

10

knoll

11

longitudinal axis

12

Second ring groove

13

front section of the unslotted part of 8th

14

rear section of the unslotted part of 8th

15

Paragraph between 13 and 14

16

1. ring groove

17

crowned head Start

18

end

19

O-ring

20

O-ring

21

conical transition surface

22

support body

23

Inner conductor contact member

24

extension part

25

Collar on 23

26

Lateral surface of 23

27

blind

28

Collar on 24 , Stop part

29

wreath of contact fingers

30

Projections on 29

31

insertion

32

graded hole

33

coil spring

34

Nut

35

outer shoulder

36

snap ring

37

38

seal

39

Further outer shoulder

40

Corrugated tube cable

41

coat

42

Wall pipe

43

Wellenberg

44

trough

45

inner conductor

46

dielectric material

47

bead flange

48

Wreath of contact fingers 24

49

pen

50

coil spring

51

stop part

Claims (37)

Fitting for a coaxial corrugated pipe cable ( 40 ) whose corrugated pipe ( 42 ) has an annular corrugated lateral surface, with a housing ( 1 ), which has a longitudinal axis ( 11 ), with a corrugated tube ( 42 ) surrounding sleeve ( 8th ), which is longitudinally displaceable from behind into a front end position and in which through longitudinal slots a wreath of fingers ( 9 ) is formed, each having a dome ( 10 ), with which they are in a wave trough ( 44 ) of the corrugated pipe ( 42 ), with one in the housing ( 1 ) provided annular stop ( 3 ) for the front edge of the corrugated tube ( 42 ), on which stop ( 3 ) the finger ( 9 ) of the sleeve ( 8th ) are moved when the sleeve ( 8th ) is moved to its front end position, wherein in this front end position the fingers ( 9 ) of the sleeve ( 8th ) between the corrugated tube ( 42 ) on the one side and the peripheral wall of the housing ( 1 ) are fixed on the other side, 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 ), centered and against the housing ( 1 ), characterized in that the housing ( 1 ) is integrally formed coherent, and that the sleeve ( 8th ) in its front end position in the housing ( 1 ) to prevent movement in the direction of the longitudinal axis ( 11 ) is positively fixed. Fitting according to claim 1, characterized in that the sleeve ( 8th ) in a rear section ( 1a ) of the housing ( 1 ) is caught between a rear end position and the front end position and that the housing ( 1 ) in its rear section ( 1a ), where in the rear end position of the sleeve ( 8th ) whose fingers ( 9 ), the fingers ( 9 ) a greater distance from the peripheral wall of the housing ( 1 ) than in their front end position, so that they are used to insert the corrugated tube ( 42 ) can spring radially outwards, Fitting according to claim 2, characterized in that the sleeve ( 8th ) is held in its rear end position by a surmountable positive engagement. Fitting according to claim 3, characterized in that the sleeve ( 8th ) on its outside a first annular groove ( 16 ), in which in the rear end position at least one on the inside of the peripheral wall of the housing ( 1 ) located projection ( 17 ) intervenes. Fitting according to claim 4, characterized in that the first annular groove ( 16 ) in which to the fingers ( 9 ) subsequent section of the sleeve ( 8th ) is located. Fitting according to claim 4 or 5, characterized in that the at least one projection ( 17 ) in the vicinity of the rear edge of the housing ( 1 ) is located. Fitting according to claim 6, characterized in that the at least one projection ( 17 ) on an end section ( 18 ) of the peripheral wall of the housing ( 1 ), which has a reduced wall thickness. Fitting according to claim 6 or 7, characterized that the at least one projection is located on a finger, which by longitudinal slots is formed, which emanate from the rear edge of the housing. Fitting according to one of the preceding claims, characterized in that the sleeve ( 8th ) on its outside in the front area of its fingers ( 9 ) a second annular groove ( 12 ), in which in the front end position of the sleeve ( 8th ) at least one of the peripheral wall of the housing ( 1 ) inwardly projecting part ( 7 ) can intervene. Fitting according to claim 9, characterized in that the at least one projecting part by externally pressing the peripheral wall of the housing ( 1 ) is formed. Fitting according to claim 9, characterized in that the projecting part is a snap ring ( 7 ), which is in an annular groove ( 6 ) in the inside of the peripheral wall of the housing ( 1 ) is recorded. Fitting according to one of the preceding claims, characterized in that the sleeve ( 8th ) in its rear end position, but not in its front end position, over the rear edge of the housing ( 1 protrudes). Fitting according to claim 12, characterized in that the housing ( 1 ) in the front end position of the sleeve ( 8th ) protrudes beyond its rear end. Fitting according to claim 9 and 12 or 10 and 12 or 11 and 12, characterized in that the sleeve ( 8th ) in its front end position with the rear edge of the housing ( 1 ) flush. Fitting according to one of the preceding claims, characterized in that the annular stop ( 3 ) in front of a housing ( 1 ) formed, inner, the sleeve ( 8th ) facing, annular shoulder ( 2 ) and that between the shoulder ( 2 ) and the attack ( 3 ) one in the longitudinal direction ( 11 ) yielding spring ( 4 ) is located. Fitting according to claim 15, characterized in that the spring ( 4 ) is annular. Fitting according to claim 16, characterized in that the spring ( 4 ) is a plate spring. Fitting according to claim 17, characterized in that the plate spring ( 4 ) is corrugated. Fitting according to one of claims 15 to 18, characterized in that the annular stop ( 3 ) at least one extension ( 5 ), which is shorter than the relaxed spring ( 4 ) and on the spring ( 4 ) over against the shoulder ( 2 ). Fitting according to one of the preceding claims, characterized in that the of the insulating support body ( 22 ) held inner conductor contact part ( 23 ) a backward, ie the corrugated pipe cable ( 40 ) facing attachment part ( 24 ), which captively on the inner conductor contact part ( 23 ) and in the direction of the longitudinal axis ( 11 ) is displaceable forward against a restoring force. Fitting according to claim 20, characterized in that the attachment 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 resiliently pressed. Fitting according to claim 20, characterized in that that the inner conductor contact part has a wreath of contact fingers, which extend to the rear, and that the attachment part a Lateral surface has, on which the contact fingers slide resiliently pressed. Fitting according to claim 21 or 22, characterized in that the contact fingers ( 29 ) on the outside of the lateral surface ( 26 ) lie. Fitting according to one of claims 21 to 23, characterized in that the contact fingers ( 29 ) at its tip a against the lateral surface ( 26 ) directed projection ( 30 ) and that the lateral surface ( 26 ) at its rear end against the contact fingers ( 29 ) directed collar ( 25 ) Has. Fitting according to one of claims 21 to 24, characterized in that the lateral surface ( 26 ) is cylindrical and between the inner conductor contact part ( 23 ) and its approach part ( 24 ) in which of the wreath of the contact fingers ( 29 ) and the lateral surface ( 26 ) formed a spiral spring ( 33 ) is clamped. Fitting according to one of claims 21 to 24, characterized in that the lateral surface ( 41 ) one along the longitudinal axis ( 11 ) has increasing diameter. Fitting according to claim 26, characterized in that between the inner conductor contact part ( 23 ) and its approach part ( 24 ) in which of the wreath of the contact fingers ( 29 ) and the lateral surface ( 26 ) formed a spiral spring ( 33 ) is clamped. Fitting according to one of claims 20 to 27, characterized in that the attachment part ( 24 ) an insertion part ( 31 ) for insertion into the hollow inner conductor ( 45 ) of the corrugated cable ( 40 ) and an abutment part ( 51 ) for striking the front edge of the inner conductor ( 45 ) of the corrugated cable ( 40 ) Has. Fitting according to claim 28, characterized in that the insertion part ( 31 ) is conical on the outside. Fitting according to claim 28, characterized in that the insertion part ( 31 ) is convex on the outside. Fitting according to claim 28, characterized in that the insertion part ( 31 ) has a lateral surface, the envelope of which is cylindrical, with a bevel at its tip for easier insertion into the hollow inner conductor ( 45 ) of the corrugated cable ( 40 ). Fitting according to one of claims 20 to 31, characterized in that the stop member a collar ( 25 ). Fitting according to claim 32, characterized in that the collar ( 25 ) to the insertion part ( 31 ). Fitting according to claim 29 or 30, characterized in that the stop member on the insertion part ( 31 ) lies. Fitting according to claim 28, characterized in that the abutment part a second ring of contact fingers ( 48 ), which widens towards the fingertips, which for making contact with the end face of the inner conductor ( 45 ) of the corrugated cable ( 40 ) are determined and therefore directed obliquely backwards. Fitting according to one of claims 28, 31 and 32, characterized in that the insertion part ( 31 ) and the stop part ( 51 ) are resiliently connected together. Fitting according to one of claims 20 to 27, characterized in that the attachment part ( 24 ) a second ring of contact fingers ( 48 ), which widens towards the fingertips, which for making contact with the end face of the inner conductor ( 45 ) of the corrugated cable ( 40 ) are determined.