EP0536370A1

EP0536370A1 - Screened plug-type connector

Info

Publication number: EP0536370A1
Application number: EP92909152A
Authority: EP
Inventors: Manfred Nusselein; Roland Bühler; Tronje Von Dem Hagen
Original assignee: Amphenol Tuchel Electronics GmbH
Current assignee: Amphenol Tuchel Electronics GmbH
Priority date: 1991-04-26
Filing date: 1992-04-27
Publication date: 1993-04-14
Also published as: WO1992020120A1; DE4213791A1

Abstract

Contact blindé, en particulier pour câbles blindés comportant un, deux ou plusieurs conducteurs intérieurs. Pour l'obtention du blindage continu du contact sur 360°, il est prévu, en particulier, un ressort à spires appliquées en tant que contact blindé à ressort.Shielded contact, in particular for shielded cables with one, two or more internal conductors. In order to obtain the continuous shielding of the contact over 360 °, provision is made, in particular, for a spring with turns applied as a shielded spring contact.

Description

Shielded connector

The invention relates generally to a shielded

Connector and in particular on a shielded contact as it can be used in a connector.

In particular, the invention relates to a plug connector or a contact, and specifically again to a pressure contact that is spring-loaded and shielded and has two or more inner conductors.

Connectors and contacts for connectors are known in an extremely large number of different designs. For example, US Pat. No. 3,275,970 shows a connector in which a shielding sleeve is provided which provides continuous shielding. A spring also sits on this sleeve, which presses against a further sleeve seated on the former sleeve.

The present invention has set itself the goal of providing a contact or a contact element or a connector using such a contact element in such a way that a large number of mating cycles is possible, specifically with a small mating surface for shielded cables, in particular with two or more inner conductors which must have a 360 ° screen transition to the contact screen. In addition to a continuous 360 ° shielding of a contact with in particular two or more inner conductors, the invention also aims to provide the greatest possible space saving. Furthermore, it should be possible in a simple manner to provide a static or dynamic seal for the internal contacts.

According to the invention, spring-loaded contacts (pressure contacts) with a plurality of internal contacts are provided. A sprung shield contact in the form of a spring with applied turns is also used. The invention further generally relates to a

Coaxial connector and in particular on a coax contact for such a connector. In particular, the invention relates to a coaxial connector or one

Coax contact with so-called pressure or face contacts

Coaxial connector or coax contacts with

Clocking is used in many areas of technology, especially when numerous plugging operations can be expected.

Coaxial plug connectors or coax contacts generally have an inner conductor (inner contact element) and an outer conductor (outer contact element), which are dimensioned and arranged accordingly. that the desired electrical properties, for example the correct wave resistance, result. DE-AE 20 20 042 describes, for example, a spring-loaded front contact for the inner conductor of a detachable coaxial line connection. A resilient insulation support enables resilient flexibility for the inner conductor. Numerous other types of coaxial connectors are known which

Use springs and spring-loaded components to meet the desired requirements. When using multiple

Components are disadvantageous in that there are transition resistances when changing from one component to another. Another disadvantage are known coax connectors or coax connectors beat the high manufacturing and assembly costs. In particular, however, there may be permanent contamination of the contact zones of the coax contacts with frequent plugging operations.

The present invention is also based on the object of providing a coaxial connector or a coax contact which does not have the disadvantages of the prior art and in particular minimizes the number of contact transitions. Good contact should also be achieved by using the self-cleaning principle.

To achieve this further object, the invention provides that the outer conductor of the coaxial connector or

Koaxkcntakts is designed as a spring. This spring is in particular a helical spring. Furthermore, the entire outer conductor is formed by this spring, which has one end, for example, directly in a printed circuit

is soldered in or connected to the outer conductor of a coaxial cable. The other opposite end of the spring is used directly to make contact with the outer conductor of a mating connector. According to a preferred embodiment of the invention, the spring is wound "radiation-tight", so to speak, directly after its contact zone with the mating connector, in such a way that it

practically acts like a solid cylinder. This property of radiation tightness can be increased by giving the material used for winding the spring such a cross-section that there are larger contact zones between the individual turns, which can also be inclined with respect to a central axis of the connector or of the coax contact.

Preferred refinements of the invention result in particular from the claims and from the description of exemplary embodiments. Although the invention relates generally to coaxial plug connectors and coax contacts, it can also be used in particular for coax contacts of small size, in particular for high-frequency connections in telephone systems. The coax contact according to the invention can be installed as a special contact in a connector strip together with other, conventional contacts.

Not only is the outer conductor designed in the form of a continuous spring, but also the inner conductor is provided as a pressure contact element or end face contact element, in particular in turn designed as a continuous spring. Further objectives, advantages and details emerge from the description of exemplary embodiments on the basis of the drawing. The drawing shows:

1 schematically shows a known coaxial connector,

partly in the cut;

FIG. 2 known first and second coax contacts, as used in the connection according to FIG. 1, are:

Fig. 4 shows the detail Y of Fig. 2;

5 shows a schematic partial longitudinal section through first and second coax contacts of a first exemplary embodiment of the invention, the coax contacts not yet establishing a connection with one another;

FIG. 5 coax contacts according to FIG. 5 in a contact position; 7 shows a partial longitudinal section through first and second coax contacts according to a second exemplary embodiment of the invention, the coax contacts not being shown in their contact position;

8 shows a partial longitudinal section through first and second coax contacts of a third exemplary embodiment of the invention, specifically a modification of the one coax contact of FIG. 7,

9 schematically shows a detail of FIG. 7.

13 shows a longitudinal section through a fourth

Embodiment, and

11 shows an embodiment of the inner conductor.

12 shows a partially sectioned side view along line 12-12 in FIG. 13 of a further exemplary embodiment of a contact according to the invention;

FIG. 13 is an end view of the contact according to FIG. 12;

Fig. 14 is a partially sectioned side view along the line

14-14 in FIG. 15 of a mating contact for the contact according to FIG. 12;

15 is an end view of the contact of FIG. 14.

The invention relates generally to coax connectors and, more particularly, to coax contacts that can be placed in a connector housing. In the following, however, a preferred field of application of the invention is explained with reference to FIGS. 1 to 4, which is not to be understood as restrictive. A first exemplary embodiment, a second exemplary embodiment with reference to FIGS. 7 and 9 and finally a third exemplary embodiment of coaxial contacts according to the present invention will be explained with reference to FIGS. 5 and 6. FIG. 10 shows a further exemplary embodiment and FIG. 11 shows an embodiment of the inner conductor.

The prior art is illustrated in FIGS. 1-4. 1 schematically shows a coaxial plug connection 10, of which a first plug strip (insulating body) 8 and a second plug strip (insulating body) 9 are shown in part. In these headers 8, 9 can in addition to the

Coax contacts II and 12 other contacts, often referred to as special contacts, are often in the form of conventional knife contacts. Coaxial connectors 10 of this type are used in many fields of technology, in particular also in telephone systems, where the high-frequency connection is made via coax contacts, while other connections are provided by less expensive knife contacts.

In Fig. 1 it can be seen that each of the contacts 11 and 12 sits in the associated connector 8 and 9 and is held in a known manner in each case by spring washers 13. After the two plug strips 8 and 9 have been joined, all contacts, including the coax contacts, are held in engagement with one another. This can be done in that the knife contacts with άan associated socket sink clocks, which indeed provide the necessary holding force, or else locking means or other fastening means can be used for the two plug strips.

2 to 4 illustrate the coax contacts 11 and 12 irr. individual. In the case shown, the first coax contact is a male or plug-in coax contact. while the second coax contact 12 is a female (F; or A. recording Kcaxkontakt

The first coax contact 11 has a front or contact area 14 and a rear or connection area 15. An inner conductor can be seen in the contact area 14

(Inner contact element) 20 and a surrounding

Outer conductor (outer contact element) 21. Again coaxial with the outer conductor 21 A metal sleeve 22 is arranged, the

is usually connected to the outer conductor 21 and is at the same potential, usually the earth potential. The connection area 13 of the first coax contact 11 is in Known way not shown in detail, for example, connected to a coaxial cable 17 with its inner conductor 18 or its outer conductor 19. Instead of the coaxial cable 17, the connection can also be, for example, a printed one

Circuit or the like.

The second coaxial contact 12 also has an inner conductor (inner contact element) 26 and coaxially around an outer conductor (outer contact element) in the form of a metal sleeve 27. It can be seen that the metal sleeve 27 fits into the metal sleeve 22 and can be received by it, while at the same time Thickenings of the outer contact element 21 establish an electrical connection with the inner surface of the sleeve 27. In addition, the pin-shaped inner contact element 23 comes into engagement with the opening of the inner contact element 25.

5 and 6 show a first exemplary embodiment of a coaxial plug connection according to the invention, although for the sake of simplicity the corresponding plug strips or insulating bodies indicated in FIG. 1 are omitted.

Before this preferred embodiment is described, it should be emphasized here again that the principles to be explained according to the invention can also be used with other types of coaxial connectors.

To simplify the presentation, - cf. also FIG. 2 - only the plug-in area 14 or the plug-in area 24 of a first coax contact 31 according to the invention and a second coax contact 32 according to the invention are shown.

Similarly to that shown in FIG. 2, the first coax contact 31 has an inner conductor or an inner contact element 33, an outer conductor or an outer contact element 34 and also a metal sleeve 35 surrounding the outer contact element 34. lent the sleeve 22 in Flg. 2. Between the inner contact element 33 and the outer contact element 34, a plastic sleeve 36 is arranged, which is fastened in a manner not shown in the connection area 15, not shown.

Both the inner contact element 33 and the outer contact element 34 are preferably designed in the form of pressure contact elements (end face contacts).

According to the invention, the external contact element 34 is designed as a spring. The spring (which is also referred to below with reference number 34) is used both with regard to its spring action and with regard to its conductivity and also shielding action. This spring 34 is made of metal. Steel comes in particular as the metal. CuBe or CuSn in question. Because high-frequency currents primarily flow on the surface due to the skin effect.

for example, a highly conductive metal, such as silver or gold, can be applied to the surface of the spring forming metal.

The spring 34 is preferably an echo spring, which is more tightly wound at its contact-side end pointing towards the second coax contact 32 and thus forms a compression or contact area 39. The spring 34 forms at its contact-side end a contact surface 40 which is in contact with the contact surface 53 of the second which will be explained in more detail

Coax connector 32 works together.

The spring 34 preferably projects with its contact surface 40 somewhat beyond the end face 42 of the metal sleeve 35.

It can also be seen that the spring 34 for producing a spring action has spring windings which are arranged at a distance (three are shown as an example) and which, when the first coax contact 31 can be pressed together with the second coax contact 32 from the relaxed position shown, so as to generate a desired contact force.

When the spring 34 is compressed as a result of the plugging process, a certain twisting occurs on the contact surfaces 40 and 53 due to torsion, so that there is a self-cleaning effect on the contact surfaces.

The spring 34 is preferably connected directly to a schematically shown connection end 43, for example to a printed circuit, or to an outer conductor 19 of a coaxial cable 17, as indicated in FIG. 2. The fact that practically the entire outsider is formed by a single spring 34 results in a minimum of contact transitions in contrast to multi-part outer conductor designs. When compressing the spring 34, this must with its in Flg. 5 rest on the left end of any contact surface, which is not shown here (but in Fig. 7) in detail. Furthermore, it must of course be prevented that the spring 34 falls out of the space between the metal sleeve 35 and the plastic sleeve 36. For this purpose, a spring retainer 37, shown schematically in FIG. 6, is provided

any catfish can be trained.

5, the material of the spring 34 is rectangular in cross section. Furthermore, the rectangles run at an angle alpha of 45 ° with respect to the central axis 44. Different angles alcha are possible. Furthermore, different cross-sections can be used for the spring material, which will be explained further below.

The second coaxial contact 32 likewise has an inner conductor or an inner contact element 50, to be precise arranged within a plastic sleeve 52, which preferably has the same shape Chen diameter and substantially the same shape as the plastic sleeve 36 has. The plastic sleeve 52 is surrounded by an outer conductor or an external contact element in the form of a metal sleeve 51, which has a preferably bevelled contact surface 53 for cooperation with the contact surface 40. The metal sleeve 51 is dimensioned such that it can be pushed into the metal sleeve 35 and thereby creates a connection between the contact surfaces 40 and 53 and the contact surfaces 41 and 54 on the inner contact elements 33 and 50. This contact state is shown schematically in FIG. 5. One can see in particular an overlap 45 between the two sleeves 35 and 51, so that good HF properties result. This is supported in particular by the 3S compression area.

In the arrangement according to FIG. 6, contact is already made between the respective outer and inner conductors. However, the two plastic sleeves 36 and 52 do not touch. The meeting of the plastic sleeves 36 and 52 defines the maximum plug movement.

7 and 9, a second exemplary embodiment of a coaxial connector is explained, which has a first Kcaxkontakt (F-contact) 70 and a second coax contact (M-Kontakt) 71. The first coax contact 70 has an inner conductor (internal contact element) 72, which is preferably designed as a helical compression spring, and a plastic sleeve 76 is arranged around it and a metal sleeve 74 is arranged around it. The space between the metal sleeve 74 and the plastic sleeve 76 is similar to the one in FIG

5 and 6, an outer conductor or outer contact element 73 in the form of a helical spring, which on the plug side has an abutment or compression region 77 and rests at the opposite end on a spring support surface 78 formed by the metal sleeve 74. The spring bracket 37 Corresponding spring holding means according to FIG. 6 are also present here but are not shown in detail. In contrast to the exemplary embodiment according to FIGS. 5 and 6, the spring forming the outer conductor 73 (which is also referred to as 73) has a smaller inside and outside diameter, so that the space between the metal sleeve 74 and the plastic sleeve 76 is not completely filled. This results in an easier movement of the spring 73. Furthermore, the material forming the spring 73 is more approximated to a square cross-section here, although still in the form of a parallelogram. The spring 73 in turn forms a contact

Contact surface 83, which extends at an angle aipha with respect to the central axis 44 or a parallel to it.

The inner conductor 72 has a simple shape here, namely the shape of a spring, which is also designated 72. This coil spring 72 preferably ends on the contact side with one or more smaller turns 80 in order to finally form a point contact 81. Alternatively, the point contact 81 can also be attached to the spring 72. At the opposite end, the spring 72 rests on a support surface, not shown, and is excluded, for example, on the inner conductor of a coaxial cable. The spring is also held by a spring holder, not shown, so that it does not fall out of the opening formed by the plastic sleeve 76, but on the other hand can be compressed when the coaxial contact 70 and the contact 71 make contact

be brought together. For the spring 72, the

Materials as used for spring 34.

As shown in FIG. 7, both the inner spring 72 and the outer spring 73 protrude beyond the plastic sleeve 75 and the metal sleeve 74, respectively. When contact is made with the second coax contact 71, the springs 72 and 73 are compressed and then generate the respective contact force. The second coax contact 71, which is intended for cooperation according to the invention, is of simpler construction here than in the case of

Embodiments 5 and 6. A plastic sleeve 76 is seated in a metal sleeve 86, in which an inner conductor 85 is seated, for example in the form of a metal pin with a contact surface 90. The partial sleeve 86 functioning as the outer conductor can be inserted into the metal sleeve 74, so that there is again an overlap on the part of the metal sleeve 74 over the metal sleeve 86, which results in a good shielding effect. If the point contact 81, as shown, is not arranged on the central axis 44, there is a certain torsion when the spring 72 is compressed and thus a torsion

Self-cleaning of the contact surface 90 and the point kentact 81.

FIG. 8 schematically shows a further exemplary embodiment of the invention, which, with the exception of the inner conductor 91, corresponds to the exemplary embodiment of FIG. 7. Here, the helical spring forming the inner conductor 91 does not form a point contact 81, but the two last turns on the contact side (in the case shown two turns 92) form a contact corresponding to the point contact 81 for cooperation with the contact surface 90.

10 shows a fourth embodiment of a

Coax contact 120, which is provided for cooperation with a coax contact of the type of coax contact 71 in FIGS. 7 and 8. In this regard, reference is made to these FIGS. 7 and 8. The coax contact 120 has an outer metal sleeve 121 which forms a contact surface 122 on which an insulating sleeve 123 rests, which is seated in an aperture 124 of the sleeve 121. The plastic sleeve 123 is tapered at 125 in its front part on the right in FIG. 10 and thereby forms a contact surface 125 on which an outer conductor 127 comes to rest. The one spring from one

Wire-wound outer conductor 127 has one Compression area 128 and a spring area 129. The winding of the outer conductor 127 located adjacent to the contact surface 126 has an end designated by 130: this extends parallel to the central axis 44, for example through a bore 131 in the insulating sleeve 123 beyond its end face 132 to one in the Metal sleeve 121 formed contact surface 133. The end 130 is in electrical connection with the metal sleeve, for example by soldering or the like. Furthermore, the end 130 can be inserted into the metal sleeve 121 in this way

be introduced that the outer conductor 127 can not fall out of the bore 124. The insulating body 123 can in turn also be pressed into the metal sleeve 121. Otherwise, the same explanations apply analogously to the outer conductor 127 as have already been made with regard to the outer conductor 73. It should be added here that the outer conductor can also be made from a wire with a round cross-section.

Also arranged in a longitudinal opening of the plastic sleeve 123 is an inner conductor designed in the form of a helical spring, which has a spring area in the middle and a compression area 141 and a compression area 142 at its two ends inside the plastic sleeve 123. The latter is used for contacting a contact surface 144. The compression area 1-1 is used to make contact with a corresponding counter contact. The compression region 141 preferably tapers towards its contact point. The contact point is arranged somewhat offset from the central axis 44. The last turn of the compression zone 142 is led out in the form of a single wire 145 through a small opening and bent into a U shape in such a way that the end comes to abut against a contact surface 132 of the insulating sleeve, so that the spring 140 forming the inner conductor inside the plastic sleeve 122 is locked. In the application case, the wire 145 is connected in a suitable manner, for example to the inner conductor of a coaxial cable or the like. In Fig. 10 it is also shown that a recess is provided in the metal sleeve 121 in the outer circumference, in which a spring 150 is seated, which is used for locking the coaxial contact 120, for example in a connector strip.

The end faces 151 and 152 of the metal sleeve 121 and the plastic sleeve 123 are preferably arranged in alignment with one another. The greater part of the compression region 141 extends beyond the end edges 151, 152 at a distance 135. The compression region 128 of the outer conductor 127 also extends at a distance 145 beyond the end edges 151, 152, the distance 154 preferably being greater than the distance 253.

11 shows a modification with regard to the mounting of an inner conductor 150, which is arranged here in a plastic sleeve 116 corresponding to the plastic sleeve 123. Specifically, a metal sleeve 162 is pressed into the bore of the plastic sleeve 151, the inner connector lead 155 forming the inner conductor 15C emerging through an opening in the metal sleeve 152 and the plastic sleeve 161

extends. As shown, the metal sleeve 162 is flanged for the axial holding of the inner conductor 150, the inner conductor 160 preferably having compression zones adjacent to the contact with the flanging parts, which in the case shown consist of two turns. The suspension area of the inner conductor 160 in turn extends between these two compression zones. Furthermore, a contact compression zone 166 extends from the corresponding compression zone on the right, consisting of two turns, from a corresponding opening in the sleeve 162, around a mating connector

to be able to contact. A further exemplary embodiment of a preferably shielded contact 300 will be described with reference to FIGS. 12 and 13. The associated mating contact 301 is shown in FIGS. 14 and 15.

The contact 300 has an insulating part 302 consisting of plastic, in which three longitudinal openings 303 are provided according to the exemplary embodiment shown. Each longitudinal opening 303 is provided with a taper section 304. In every

Longitudinal opening 303. sits a contact part 305, which in turn is constructed as follows: A contact pin 306 has a first section with an outer diameter which is approximately that

Inner diameter of the tapered portion 304; a sealing ring 307 sits on the contact pin 306 adjacent to the first section; the pin 306 ends in a widened section 308, on which a helical compression spring 309 is located

supports. A guide pin 310 still protrudes from the widened section 308 in the direction of the extension of the spring 309.

The outer diameter of the sealing ring 307 and also the outer diameter of the first section 308 correspond approximately to that

Inner diameter of the longitudinal opening 303.

The end of each longitudinal bore is closed off by a connecting part 311 serving as a contact for the spring 309, which forms an attachment edge 313 on its outer circumference, which, as shown, preferably cuts into the inner wall of the longitudinal opening 303 and is thus held. The actual connection 312 to which the lead wire of a cable can be attached, for example soldered, also extends from the connecting part 311. A casting compound 316 is preferably cast into an opening 315 of a guide or locking sleeve 314 surrounding the insulating part 303 in order to ensure a firm fit

To ensure connecting parts.

In the idle state shown in FIG. 12 (in contrast to a contact state not shown here), the spring 309 is preferably somewhat biased. The above-mentioned guide sleeve 314 has an inner diameter corresponding to the outer diameter of the likewise sleeve-shaped insulating part 302, the sleeve 314 forming an annular stop 317 at its right end, which decreases in its radial extension toward the outside on the right, that is to say it is designed to be chamfered. The casting compound 316 is preferably provided in the area of this ring stop 317 and in the initial area 318 of the insulating part 302.

Subsequent to the stop 317, the wall of the guide sleeve 314 then extends to the right by a distance L, namely with a substantially constant wall thickness.

From the area formed by the stop 317, the guide sleeve 314 extends to the left to form an annular locking shoulder 319, which can be snapped into any connector housing, where other contacts can preferably also be arranged. The guide sleeve 314 then forms a radially inwardly offset contact surface 320, on which a helical spring 321 is arranged, and furthermore it forms an 'annular spring contact surface 420.

The helical spring 321 extends in the axial direction beyond the left end edge 322 of the guide sleeve 314 in the rest state shown. The same also applies to the contact pins 306 already mentioned. A spring-loaded shield contact is thus formed by the spring 321, which is preferably applied

Has turns.

The spring 320 can be designed in the manner shown in Fig. 12, or the spring 321 can have almost applied turns over its entire length in the idle state in order to then have fully applied turns in the contact state, so that the spring practically forms a continuous shield .

Preferably, spring 321 is flat wound and soldered to the outer surface of guide sleeve 314 as shown at 323. It should be noted that the guide sleeve 314 preferably consists of metal. The insulating part 302 is preferably made of plastic. The contact part 305 is made

also made of metal, for example copper. The same applies to the connection part 311.

As shown, spring 321 may consist of essentially two sections, section 324 and section

Section 325. In section 324 the turns are narrow, while in section 325 the turns are spaced apart.

Due to the arrangement described above, the internal contacts are sealed with a static or dynamic seal, so to speak.

The counter-contact 301 already mentioned has an insulating part 350, in which longitudinal openings 351 are formed, which form ring stops 352 for contacting a contact element 353. Each of the arranged in one of the longitudinal openings 351

Kontaktele-elements 353 is provided with a locking shoulder 354 so as to move the contact element 353 out of the

Prevent longitudinal opening 351 after insertion. Each

Contact element 353 has a contact tip 355 on the contact side and a connection part 356 on the connection side. As shown, each connection part 356 is cast in and fixed by a casting compound 357. Each is to improve the bracket

Provide connection part with an extension 457.

The insulating part 350 is preferably seated in a recess 358 of a guide sleeve 361, preferably made of metal, which is provided on its outer circumference with a latching shoulder 362 so that it can be snapped into any connector housing in which other contacts could also be arranged. The recess 358 has a cylindrical side wall 359 and a bottom wall 360 in which the three contact elements 353 correspond

Openings 452 are provided.

The guide sleeve 361 forms an end face or contact surface 363 and serves to make contact with an end face 364 of the spring 321 of the contact 300. For the purpose of contacting, the contact 300 and the counter-contact 301 are preferably displaced relative to one another to such an extent that the end or contact surfaces 365 of the contact pins 306 are contacted by the contact tips 355, these contacts then following a further relative movement of contact 300 and counter-contact 301 against the force of the spring 309 are axially displaced until the end face 363 strikes the end face 364 and thereby tension the spring 321. This tensioning movement of the spring 321 continues to a desired extent and ends in any case when the end face 363 and the end face 322 meet. Sufficient contact conditions are also conceivable and before reaching this state

expedient.

In the contact state, the springs 309 and also the spring 321 are thus tensioned, the spring 321 being able to be connected to the outer conductor of a cable, not shown, and preferably via the sleeve 314. The spring 321 provides a shield, in particular also in the area the contact between the contact tips 355 and the end faces 365.

Claims

1. Shielded contact, in particular for shielded cables with one, two or more inner conductors, characterized in that in particular to achieve the continuous 360 ° shielding of the contact, a spring (321) with applied turns is provided as a spring-loaded shield contact.

2. Contact according to claim 1, characterized in that spring-loaded pressure or internal contacts (305) are provided for the inner conductor.

3. Shielded contact with one or more conductors and at least one outer conductor, characterized in that the outer conductor is a preferably flat-wound spring (321) which surrounds the inner conductor (s) and that the spring makes contact with a mating contact (301) is compressed in such a way that the spring windings are close together and provide a shield.

4. Contact according to one or more of the preceding claims, characterized in that a guide sleeve (314) is provided for receiving an insulating part

(302) serves in the one, two or more longitudinal openings

(303) are formed, in which spring contacts are arranged, and that on the outer circumference of the guide sleeve (314) a plurality of metal wire turns forming a spring are provided.

5. Contact according to one or more of the preceding claims, characterized in that the spring is a flat wound spring in the contact state applied turns having spring on the outer circumference of a metallic

Guide sleeve arranged and attached to one end at this.

6. Contact according to one or more of the preceding claims, characterized in that the spring is coiled flat and in the idle state has small distances between the windings, which disappear in the contact state, so that there is good shielding against HF.

7. Contact according to one or more of the preceding claims, characterized in that the spring is wound closer in the contact area than in the contact area.

8. Contact according to one or more of the preceding claims, characterized in that the spring (321) on the outer surface of the sleeve (314) is guided.

9 Contact according to one or more of the preceding claims, characterized in that the sleeve in the

Area where there is no spring has a locking shoulder (319).

10. Contact according to one or more of the preceding claims, characterized in that the pressure contacts

(Contact part 305) are sealed on the one hand by sealing rings (307) and on the other hand by a sealing compound (casting resin).

11. Contact according to one or more of the preceding claims, characterized in that each longitudinal opening (303) has a tapering section (304) whose inner diameter corresponds approximately to the outer diameter of a contact pin (306) of the contact part (305), and in that the contact part ( 305) furthermore has a widened section (308), the outer diameter of which approximately corresponds to the inner diameter of the longitudinal opening (303).

12. Contact according to one or more of the preceding claims, characterized in that the contact part (305) has a connecting part (311), which in addition to the

widened section (308) serves as an attachment for the spring (309).

13. Contact according to one or more of the preceding claims, characterized in that the connecting part (311) has a latching or sealing lip (313) on its outer circumference.

14. Contact according to one or more of the preceding claims, characterized in that the guide sleeve (314) of the contact (300) forms an end face (322) which can cooperate with an end face of a mating contact (301).

15. Contact according to one or more of the preceding claims, characterized in that the spring (321) forms an end face (364) which can cooperate with an end face (363) of a guide sleeve (361) of a mating contact (301).

16. Contact according to one or more of the preceding claims, characterized in that the contact pins (306) form contact surfaces (365) which are offset in the axial direction with respect to the end face (364) of the spring (321).

17. Contact according to one or more of the preceding claims, characterized in that the displacement of the two end faces (364, 365) is such that the

End faces (365) axially over the end faces (364)

stick out.

18. Contact according to one or more of the preceding claims, characterized in that the spring (321) attached to the guide sleeve (314) is soldered, for example, with its end opposite the end face (364).

19. A counter-contact, in particular for cooperation with a contact (300) according to one or more, characterized in that a guide sleeve (361) made of metal is provided. seen, in which an insulating part (350) is arranged, in which contact elements (353) are held stationary.

20. Contact according to one or more of the preceding claims, characterized in that the contact elements (353) have latching and sealing lips (354) and are seated on ring stops (352) in the guide sleeve (361), contact tips (355) via an end face (363) of the guide sleeve (361) protrude in the axial direction.

21. Contact according to one or more of the preceding claims, characterized in that a casting compound (357) with a connecting part (356) of the contact element (353) and the sleeve (361) and the insulating part (350) cooperate to provide a holder and seal .

22. Coaxial connector or coax contact for cooking frequency connections with an inner conductor and an outer conductor, d a d u r c h g e k e n n z e i c h n e t,

that the outer conductor is sprung or that the inner conductor and outer conductor are sprung.

23. Coaxial plug connector or coax contact for high-frequency connections with an inner conductor designed as a pressure contact element and an outer conductor designed as a pressure contact element,

characterized,

that the outer conductor is designed as a spring, which is used to make contact with a corresponding mating contact.

24. Coax contact of small size, in particular for high-frequency connections in low-frequency systems and in particular for installation as a special contact in a connector strip with an inner conductor designed as a pressure contact element and an outer conductor designed as a pressure contact element, characterized in that the outer conductor is formed by a spring which is used for contacting a corresponding counter contact is used.

25. Coax contact according to one of the preceding claims,

characterized in that only the spring (34, 72) forms the outer conductor.

26. Coax contact according to one of the preceding claims, characterized in that the spring (34, 72) is designed such that it performs a torsional movement when compressed, so that self-cleaning takes place for the contact.

27. Coax contact according to one of the preceding claims, characterized in that the spring (34, 73) a

Coil spring is.

28. Coax contact according to one of the preceding claims,

characterized in that the spring has a connection-side or system-side end and a contact-side end and that the spring is wound at its contact-side end practically without gaps such that passage of electrical or magnetic fields is not possible.

29. Coax contact according to one of the preceding claims,

characterized in that the outer conductor in the distance: the spring is surrounded by a metal sleeve (35, 74), which has a shallow length, that when plugged in, it overloads the metal sleeve with the mating connector.

30. Coax contact according to one of the preceding claims, characterized in that the spring is made of a rectangular cross-sectional, square material or parallelogram-shaped material.

31. Coax contact according to one of the preceding claims,

characterized in that the contact surfaces between: windings run at the most acute angle possible with respect to the central axis.

32. Coax contact according to one of the preceding claims, characterized in that the contact surface (40, 88) of the spring (34, 73) with respect to the central axis (44) of the coax contact extends obliquely, preferably with the same inclination as the inclination of a cooperating contact surface (53, 89) of a mating connector.

33. Coaxial contact according to one of the preceding claims, characterized in that the outer conductor is designed as a continuous spring (34, 73), that the spring has closely adjacent turns adjacent to the contact surface (40, 88), and that the spring is spaced apart when Compressing a spring-generating windings has where a shielding effect is no longer required.

34. Coax contact according to one of the preceding claims,

characterized in that the spring is arranged inside a metal sleeve (35, 74) and outside a plastic sleeve (76).

35. Coax contact according to one of the preceding claims,

characterized in that the spring (34, 73) projects axially beyond the end face (72) of the metal sleeve (35).

36. coax contact according to one of the preceding claims,

characterized in that the inner conductor is designed as a spring.

37. Coax contact according to one of the preceding claims.

characterized in that the inner conductor as

Coil spring is formed and in one

Plastic sleeve (76, 123) is housed.

38. Coax contact according to one of the preceding claims,

characterized in that the entire inner conductor consists of a spring wire, which forms both the contact zones for contact with a mating connector, and also a connection directly to a printed circuit or the inner conductor of the connector.

39. Coax contact according to one of the preceding claims, characterized in that the contact zone (81) of the spring forming the inner conductor is arranged somewhat offset with respect to the central axis (44) of the coax contact.

40. Coax contact according to one of the preceding claims,

characterized in that the plastic sleeve (123) is tapered to accommodate a spring (127) and to form a support (126) for the spring.

41. Coax contact according to one of the preceding claims,

characterized in that the spring (127) forming the outer conductor has its inner end remote from the last

internal winding of the spring is continued axially and is preferably directly electrically connected further and is also preferably used mechanically to hold the spring (127) in its axial position.