EP3047544A1

EP3047544A1 - Contact washer and plug connector

Info

Publication number: EP3047544A1
Application number: EP14771837.3A
Authority: EP
Inventors: Manuel TÜNKER; Valeri Reimchen; Cord Starke
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2013-09-20
Filing date: 2014-09-17
Publication date: 2016-07-27
Anticipated expiration: 2034-09-17
Also published as: EP3047544B1; US20160226196A1; JP2016528709A; WO2015040066A1; DE102013015574A1; DK3047544T3; CN105556757A; ES2654770T3

Abstract

The invention relates to a contact washer (7', 7'', 7''') with a plurality of U-shaped regions (10', 10'', 10''') which are arranged in an annular manner and each of which has two webs (18a', 18a'', 18a''', 18b', 18b'', 18b''') arranged substantially parallel to each other, the webs (18a', 18a'', 18a''', 18b', 18b'', 18b''') of one U-shaped region (10', 10'', 10''') being connected to each other at a radially outer end of the webs (18a', 18a'', 18a''', 18b', 18b'', 18b''') via a first connection web (21', 21'', 21'''). U-shaped regions (10', 10'', 10''') arranged adjacently to one another are connected to one another at a radially inner end of the respective webs (18a', 18a'', 18a''', 18b', 18b'', 18b''') via a second connection web (23', 23'', 23'''), and the U-shaped regions (10', 10'', 10''') have at least one bend (24', 24a'', 24b'', 24''') in the region of the respective webs (18a', 18a'', 18a''', 18b', 18b'', 18b''') arranged substantially parallel to each other.

Description

Contact spring ring and connector

The invention relates to a contact spring ring. Furthermore, the invention relates to a connector.

Connectors, which are used in particular in wind turbines, have the requirement to have the best possible shielding in order to be able to dissipate particularly overvoltages, which may be caused by lightning, for example, well. For this purpose, the shielding of the cable, for example in the form of a braided shield, which surrounds the wires of the cable and below the

Mantels of the cable is arranged to be contacted. This is usually possible only with great effort.

For example, it is known to strip the free end of the cable, to disentangle the underlying braid, fold over and lay it over the jacket of the cable. For contacting a metal sleeve is then guided over the folded braid and screwed or crimped to the braid, so that the

Braided screen is clamped between the metal sleeve and the jacket of the cable. This method is often used in coaxial connectors or molded connectors, as described for example in EP 0 207 322 Bl.

In the case of connectors which can be assembled freely, the procedure is either similar or else the contacting is produced via a resilient element, such as a contact spring ring, which can be actuated, for example, via a housing. The continuation of the shielding is then usually realized via a screw, which with a corresponding fitting part of a mating connector corresponds.

It is known to use a spiral spring ring as a contact spring ring, which, however, is expensive to manufacture, whereby high manufacturing costs for the contact spring ring and thus also the connector, in which one or more of these contact spring rings are arranged, may arise. In addition, a spiral spring ring can have disadvantages during expansion and tensioning of the spiral spring ring.

The invention is based on the object, a

Contact spring ring and a connector to provide, by means of which the aforementioned disadvantages can be solved.

The object of the invention is achieved with the features of the independent claims. Advantageous embodiments and advantageous developments of the invention are specified in the dependent claims.

The contact spring ring according to the invention has a

Variety of annularly arranged U-shaped areas, each having two substantially mutually parallel webs, wherein the webs of a U-shaped region are connected to each other at a radially outer end of the webs via a first connecting web, wherein adjacent arranged U-shaped regions at a radially inner end of their webs via a second

Connecting web are connected to each other, and wherein the U-shaped areas in the area of their in the Substantially mutually parallel webs

have at least one bend.

The contact spring ring according to the invention is compared to an otherwise commonly used spiral spring ring of a plurality of annularly arranged U-shaped

trained areas, each one

adjacently arranged U-shaped areas are interconnected. The connection of the U-shaped areas with each other takes place radially inward of the contact spring ring, wherein radially inward is the area of the contact spring ring, with which the

Contact spring ring in the mounted state on the outer surface of the object on which it is mounted,

for example, a cable, rests. By the U-shaped areas, which are open in the direction radially inward, and by the connection of the

adjacent to each other arranged U-shaped regions via second connecting webs radially inwardly, the contact spring ring has a meandering shape. However, the contact spring ring is not flat or even

formed, but the U-shaped areas have in the region of their substantially mutually parallel webs to a bend, wherein the bend extends annularly over the entire contact spring ring and thus each web of all U-shaped areas having this bend. The bend can have a bending radius between 30 ° and 120 °. The bend is formed such that the first connecting webs, which are arranged radially on the outside and part of the U-shaped

trained areas are, in the direction of the second

Connecting webs, which are arranged radially inward and connect the U-shaped areas with each other, are bent. At the first connecting webs and thus radially outwardly of the U-shaped areas of the contact spring ring is designed to be free springy. If the contact spring ring has only one bend in the region of the U-shaped regions, the contact spring ring is preferably also designed to be spring-free in the region of the radially inner second connecting webs. The contact spring ring can be radially clamped by its special design, but also be widened radially, so that the contact spring ring can apply a radial spring action. In this way, the contact spring ring, which can be pushed axially onto the object to be mounted, such as a cable, different

Diameter, for example, different diameters in a cable sheath or a shield, compensate. Furthermore, the contact spring ring is characterized by a comparison with a spiral spring ring cost-effective production, since the production costs compared to a

Spiral spring ring is reduced due to the lack of winding.

Preferably, it is provided that the U-shaped

formed regions in the region of their substantially mutually parallel webs have a first bend and a second bend. By forming two bends on the two bars per U-shaped

trained area of the contact spring ring in addition to the radial expansion and radial clamping can also be axially expanded and axially braced, so that the contact spring ring can also apply an axial spring action in addition to the radial spring action. Assign the U-shaped areas along their length and thus between their radially inner end and their each radially outer end lying on two bends, the contact spring ring radially inside, in the region of the second connecting webs, which each connect two adjacently arranged U-shaped regions with each other, be set, so that the

Contact spring ring radially inside has no spring action.

If the U-shaped regions each have two bends, it is preferably provided that the first bend and the second bend have differently sized bending radii. Due to the different sized bending radii, the spring action of the contact spring ring can be improved and also be customized. It is preferably provided that the second

Bend closer to the radially inner second

Connecting web is formed as the first bend, wherein the bending radius of the second bend is preferably smaller than the bending radius of the first bend. Due to the closer radially inward second bend can

be achieved that in the field of the second

Connecting webs and the radially inner ends of the U-shaped areas of the contact spring ring possible flat against the object to which it is mounted, may rest, to an axial fixing

to reach. Due to the further radially outer first bend, which preferably has a larger bending radius than the second bend, the axial and radial spring action of the contact spring ring can be achieved. For example, the first bend may have a bend radius between 80 ° and 120 °, preferably between 90 ° and 110 °, and the second bend may be for example one Bending radius between 30 ° and 60 °, preferably between 40 ° and 50 °, more preferably of 45 °.

In order to increase the contact points of the contact spring ring in the assembled state, it may preferably be provided that a U-shaped area formed with an adjacently arranged U-shaped area via a third connecting web to form a further contact point radially outside of the contact spring ring

connected is. In this embodiment, the U-shaped areas may thus be at least partially also radially outward in addition to the connection radially inward to radially outward of the

Contact spring ring to be able to train another contact point.

The third connecting web is preferably V-shaped. The V-shaped third

Connecting web is preferably formed integrally with its two free ends with the adjacently arranged U-shaped areas. The angled between the two ends of the third area

Connecting web, which forms the V-shape is formed radially outward of the contact spring ring, said angled portion radially outwardly preferably flush with the U-shaped areas, in particular the first

Connecting web of U-shaped areas, complete. The V-shaped connecting web is aligned or

arranged that the V-shaped connecting web is open in the direction radially inward.

To achieve a particularly cost-effective production of the contact spring ring of a disc-shaped Metal element may be formed, wherein the substantially mutually parallel webs and the first, second and third connecting webs may be formed by a laser, punching or etching of the disc-shaped metal member. The disc-shaped metal element may be made of a sheet material, in particular a

Spring steel, be formed and the shape of a

Have washer. By means of lasers, punching or etching can in a short time, with little effort, the inner contour and outer contour of the disc-shaped

Metal element interrupting slots in the

disc-shaped metal element are introduced, which can be formed by the slots, the webs and connecting webs to form the contact spring ring. After forming the webs and connecting webs by laser, punching or etching, the contact spring ring in the region of the webs can be bent once or twice to introduce the bends in the contact spring ring. An as above educated and further educated

Contact spring ring can be arranged in a connector, wherein one or two or more of the correspondingly formed contact spring rings can be arranged in a connector.

The connector may include an insulating housing within which a free end of a cable is inserted, a plurality of contact elements which are connected to the wires of the cable, and a shield sleeve, wherein the contact spring ring at a first stripped portion of the free end of the cable on the Cores of the cable surrounding shielding is arranged, in

Longitudinal extension of the cable in front of and behind the Contact spring ring, the cable is surrounded by a jacket of the cable, wherein the contact spring ring is enclosed by the shield sleeve, and wherein the shield sleeve is fixed to the jacket of the cable in front of and behind the contact spring ring.

Amongst other things, the connector is distinguished by the fact that the production outlay compared to conventional ones

Plug connectors is substantially reduced and now the entire manufacturing process is automated in

Different workstations can be done, making the production, especially large quantities, can be done very economically. In the manufacture of the connector according to the invention, the jacket of the first in the connector

to be introduced at two portions, wherein at the first area as far as a cut is made so that only the jacket is cut, but not the underlying shielding. At the second area, which is spaced from the first area, in addition to the sheath, the shielding

cut. Between the first region and the second region, the jacket and the shield remain on the cable. At the first area so much is removed from the jacket, that in the first region of the contact spring ring can be used, which rests in the inserted state on the shield of the cable. Before and behind the inserted contact spring ring, the cable is still surrounded by the jacket of the cable. By cutting the sheath and the shield in the second region, the sheath and the shielding can be pulled off the cable so that an end portion of the free end of the sheath is removed Cable is formed, on which the wires of the cable are exposed. If necessary, the now exposed wires can also be stripped and with

Contact elements, for example by crimping, connected. Subsequently, an electrically conductive

Umbrella sleeve, which may be made for example of a metal die-cast, as far as the free end of the cable out that the contact elements and the

Contact spring ring are completely covered by the shielding sleeve. For safe positioning of the shielding sleeve shielding sleeve is attached to the jacket of the cable immediately before and behind the contact spring ring. The attachment of the shielding sleeve on the jacket of the cable takes place in such a way that thereby both the contact spring ring tight

is completed, as well as a strain relief for the cable is formed. About the shielding sleeve is

then pushed an insulating housing, which covers the shielding sleeve and the free end of the cable except for a small area, the insulating housing partially abuts the outer peripheral surface of the shielding sleeve. Each processing step during the manufacturing process, and also for the production of the contact spring ring, this can be done fully automated, so that no more manual work must be used, which in addition to the

Production costs and the production costs and the production time can be reduced.

Preferably, it is provided that the contact spring ring is tensioned by the shielding sleeve. This is achieved by attaching the shielding sleeve to the

Sheath, preferably by a crimping, the

Umbrella sleeve is reduced in diameter in the region of the first contact spring ring and thus in the direction of the Mantels is pressed, whereby the shield sleeve presses on the contact spring ring and this biases, so that the contact spring ring is stretched radially in the assembled connector through the shield sleeve.

Further, it is preferably provided that at a free end of the shielding sleeve, to which the connector is fastened by means of the shielding sleeve to a wall, a second electrically conductive contact spring ring in a on the

Umbrella sleeve formed recess is inserted. The second contact spring ring, which is as outlined and further developed, is in a fixed state of the connector with the wall, which is for example a housing wall, flat against the wall, wherein in a metal wall formed of the second contact spring ring serves as a shield, such that a shield contact between the wall and the second contact spring ring

can be trained. In addition, the second

Contact spring ring compensate a trained between the connector and the wall game.

In the following, the invention will be described with reference to the attached drawings

From forms of execution explained in more detail.

Show it

Fig. 1 is a schematic representation of a

Connector according to the invention in one

Cut look,

Fig. 2 is a schematic representation of a

Contact spring ring according to a first Out of leadership form of the invention in one

perspective view, a schematic representation of the contact spring ring shown in Fig. 2 in a plan view from the front,

Fig. 4 is a schematic representation of a

Contact spring ring according to a second embodiment of the invention in a perspective view,

5 is a schematic representation of the in Fig. 4th

shown contact spring ring in a plan view from the front,

6 shows a schematic representation of an arrangement of the contact spring ring shown in FIGS. 2 and 3 on a cable,

7 is a schematic detail of a

Arrangement of the contact spring ring shown in Fig. 4 and 5 in a connector as shown in Fig. 1, and

Fig. 8 is a schematic of a contact spring ring according to a third imple mentation of the invention in a perspective view.

In Fig. 1 a connector according to the invention is shown in a sectional view. The connector has an insulating housing 1, which is formed substantially sleeve-shaped and the outer shell of the Connector forms. Within the insulating housing 1, a free end 2 of a cable 3 is inserted.

The cable 3 has at the free end 2 a first

stripped area 4, on which the jacket 5 of the cable 3 is removed and arranged below the shell 5 shielding 6, which as shield braid

is formed, the cable 3 is exposed. In this first stripped area 4, a first electrically conductive contact spring ring 7 ^{'is arranged} on the shield 6. The first contact spring ring 7 ^' is shaped in the form of a closed ring, which bears tightly against the shield 6.

At one end portion 8 of the free end 2 of the cable 3, several wires 9 of the cable 3 emerge from the cable 3 and are connected to contact elements, not visible here, the contact elements are in turn arranged in an insulating body 11. The insulating body 11 is spaced within the connector of the end portion 8 of the free end 2 of the cable 3 is arranged.

Between the insulating body 11 and the insulating housing 1, an electrically conductive shielding sleeve 12 is arranged, which the insulating body 11, a second between the

Insulating body 11 and the end portion 8 of the free end 2 of the cable 3 formed free space 13 and the first

Contact spring ring 7 ^' encloses. The shielding sleeve 12 projects beyond the contact spring ring 7 ^' both in front of and behind the contact spring ring 7 ^' and is sealingly arranged on the jacket 5 of the cable 3. In the area of the first

Contact spring ring 7 ^' is the shield sleeve 12 on the

Contact spring ring 7 ^' and pushes it in the direction of Shielding 6, so that the contact spring ring 7 ^' is stretched radially through the shield sleeve 12.

In the region of the insulating body 11 and the second free space 13, the shielding sleeve 12 is formed thicker than in the region of the first contact spring ring 7 ^" , so that in the region of the insulating body 11 and the second free space 13 the

Umbrella sleeve 12 bears against the inner wall 14 of the insulating housing 1. In an arranged between the insulating housing 1 and arranged in the insulating housing 1 free end 2 of the cable 3 first free space 15, an insulating material 28 is injected, which completely fills the first space 15. The insulating material 28 is adjacent in the region of the free end 2 of the cable 2 to an outer peripheral surface of the shielding sleeve 12 and, where no shielding sleeve 12 is provided, directly to the jacket 5 of the cable 3.

In the shielding sleeve 12, one or more, not shown, openings are further formed, via which the injected into the first free space 15 insulating material 28 in the second free space 13, which is an interior of the shielding sleeve 12, in which the exposed wires. 9 of the cable 3 are inserted into the insulating body 12, can flow, so that even this the inner space of the shield sleeve 12 forming second space 13 preferably no longer filled with air areas, but is completely filled with the insulating material 28. The guided in the second free space 13 wires 9 of the cable 3 are thus embedded in the insulating material 28.

In the first region 4 is between the shield 6, the first contact spring ring 7 ^' and the shield sleeve 12 a third free space 33 is formed, which is not filled by the insulating material, but in which air is arranged so that the first contact spring ring 7 ^' tension and relax.

The shielding sleeve 12 is substantially completely enclosed by the insulating housing 1 except for a region of a free end 16 of the shielding sleeve 12. At the region of the free end 16, which is not covered by the insulating housing 1, the shield sleeve 12 has latching means 17 for attaching the connector to a wall. The latching means 17 are provided in the form of a plurality of ring-shaped on the end face of the shielding sleeve 12 locking hooks. The insulating housing 1 is arranged on the screen sleeve 12 and also on the in the first free space 15

Insulating material 28 movably mounted, so that the

Insulating housing 1 on the shield sleeve 12 and the

Insulating material 28 can be moved, wherein in a sliding movement of the insulating housing 12, the locking means 17 can be actuated. For this is s.der

Outer peripheral surface of the shield sleeve 12 in the vicinity of

Locking means 17 a bulge 19 is formed. At the

Inner wall 14 of the insulating housing 1 is inclined

trained stop surface 20 is provided. Will that be

Insulating housing 1 with the stop surface 20 on the

Pushed out bulge 19, the shield sleeve 12 is pressed at its free end 16 and thus also the locking means 17 inward, so that a hooking of the locking means 17 can be solved with the wall.

Further, at the free end 16 of the shield sleeve 12, a second electrically conductive contact spring ring 7 ^'' in shape a closed ring in a formed on the shield sleeve 12 recess 22 used. The second

Contact spring ring 7 ^'' is arranged close to the latching means 17, so that when a catching of the latching means 17 behind the wall of the second contact spring ring 7 ^'' a

Spring force on the latching means 17 such that the latching means 17 are pressed to the outside, so that a particularly stable and secure entanglement or attachment of the latching means 17 and thus of the connector is made possible on the wall.

Fig. 2 shows a first possible embodiment of a

Contact spring ring 7 ^' . The contact spring ring 7 ^' has a plurality of annularly arranged U-shaped regions 10 ^' . The U-shaped regions 10 ^' each have two substantially mutually parallel webs 18a ^' , 18b ^' and a first

Connecting web 21 ^' , which is formed substantially at a right angle to the webs 18a ^' , 18b ^' and with the radially outer ends of the webs 18a ^' , 18b ^'is integrally connected, on. The individual U-shaped regions 10 ^' are integrally formed with the respective adjacently arranged U-shaped regions 10 ^' via a second connecting web 23 ^' , which is arranged radially inward of the contact spring ring 7 ^'

connected with each other. The contact spring ring 7 ^' is thus closed annular and has a

Meander shape. The U-shaped regions 10 ^' have in the region of their webs 18a ^' , 18b ^' each have a bend 24 ^' , through which the webs 18a ^' , 18b ^' over their length from radially inward to radially outwardly also substantially U-shaped are formed bent. By the bend 24 ^' , the first connecting web 21 ^' in the direction of the second

Connecting web 23 ^' bent so that the connecting webs 21 ^' , 23 ^' are substantially opposite and

are directed towards each other. The bend 24 ^' points

preferably a bending radius between 40 ° and 80 °.

At the first connecting webs 21 ^' and thus radially outwardly of the U-shaped regions 10 ^' is the

Contact spring ring 7 ^' free spring formed. Further, the contact spring ring 7 ^'is also radially inwardly formed on the second connecting webs 23 ^' free spring. Of the

Contact spring ring 7 ^' can by its special

Embodiment are radially braced, but also be widened radially, so that the contact spring ring 7 ^' can apply a radial spring action.

Fig. 3 shows the contact spring ring 7 ^' shown in Fig. 2 in a plan view from the front.

In Fig. 4 and 5, a second possible imple mentation form of a contact spring ring 7 ^{'' is} shown. The contact spring ring 7 ^'' also has a plurality of annular

arranged U-shaped regions 10 ^'' , which each have two substantially mutually parallel webs 18a ^'' , 18b ^'' , wherein the webs 18a ^'' , 18b ^{'' of} a U-shaped portion 10 ^'' radially outward are connected to each other via a first connecting web 21 ^'' . Adjacent to each other

arranged U-shaped regions 10 ^'' are at their webs 18a ^'' , 18b ^'' radially inwardly via a second connecting web 23 ^'' connected to each other. In contrast to that shown in FIGS. 2 and 3

Contact spring ring 7 ^' , the contact spring ring shown in Figs. 4 and 5 7 ^'' in the U-shaped

Areas 10 ^'' along the webs 18a ^'' , 18b ^{'' in} each case two bends 24a ^'' , 24b ^'' on. A first bend 24a ^" is further radially outwardly formed than a second bend 24b ^" . The two bends 24a ^'' , 24b ^'' have

different sized bending radii, wherein the first bend 24a ^{'' has} a larger bending radius than the second bend 24b ^'' . The first bend 24a ^'' can

For example, have a bending radius between 80 ° and 120 °, preferably between 90 ° and 110 °, and the second bend 24b ^'' , for example, a bending radius between 30 ° and 60 °, preferably between 40 ° and 50 °, more preferably of 45 ° , exhibit. By the two

Bends 24a ^'' , 24b ^'' along the webs 18a ^'' , 18b ^{'' of} the U-shaped portions 10 ^'' can the

Contact spring ring 7 ^{'' in} addition to the radial

Spring effect also apply an axial spring action, so that the contact spring ring 7 ^{'' can be} radially and axially expanded and clamped. By the closer radially inside

lying second bend 24b ^'' can be achieved that in the region of the second connecting webs 23 ^'' and the radially inner ends of the U-shaped portions 10 ^{'' of} the contact spring ring 7 ^'' when arranged in a connector as flat as possible on the shielding sleeve 12 may rest in the recess 22 in order to achieve an axial fixing. Due to the further radially outer first bend 24a ^'' , which has a larger bending radius than the second bend 24b ^'' , the axial and radial spring action of the contact spring ring 7 ^'' can be achieved. Fig. 5 shows the contact spring ring 7 ^'' shown in Fig. 4 in a plan view from the front.

Fig. 6 shows a detailed view of the connector shown in FIG. 1 in the area where a

Contact spring ring 7 ^' , which is formed according to the contact spring ring 7 ^' shown in FIGS. 2 and 3, is arranged in the first stripped area 4 on the shield 6. The contact spring ring 7 ^' lies radially inward with the second connecting webs 23 ^' on the

Shield 6 on.

Fig. 7 shows a detailed view of the connector shown in FIG. 1 in the area where a

Contact spring ring 7 ^'' , which is formed according to the contact spring ring 7 ^' shown in FIGS. 4 and 5, is inserted in a formed on the shield sleeve 12 recess 22. In the embodiments shown here is the

Contact spring ring 7 ^' , which has only one bend 24 ^' , arranged on the shield 6 of the stripped cable 3 and the contact spring ring 7 ^'' , which two bends 24a ^'' , 24b ^'' , is disposed in the recess 22 of the shield sleeve 12. However, it is also possible conversely that the contact spring ring 7 ^' , which has only one bend 24 ^' , in the recess 22 of the shield sleeve 12 is arranged, and that the contact spring ring 7 ^'' , which two bends

24a ^'' , 24b ^'' , on the shield 6 of the

stripped cable 3 is arranged. Further, it is also possible that the contact spring ring 7 ^' , which has only one bend 24 ^' , both on the shield 6 of the stripped cable 3 and in the recess 22 of Umbrella sleeve 12 may be arranged. Alternatively, it is also possible that the contact spring ring 7 ^'' , which two

Bends 24a ^'' , 24b ^'' , both on the shield 6 of the stripped cable 3 and in the recess 22 of the shield sleeve 12 may be arranged.

Fig. 8 shows a further possible embodiment of a

Contact spring ring 7 ^''' , wherein the contact spring ring 7, for example, on the shield 6 of the stripped cable 3 or for example in the recess 22 of the shield sleeve 12 may be arranged.

The contact spring ring 7 ^'" shown in FIG. 8 is similar to the contact spring ring 7 ^' shown in FIG. 2, wherein in the embodiment shown in FIG

Connecting web 29 between two U-shaped portions 10 ^'''of the contact spring ring 7 ^{''' is} formed. The third connecting web 29 is formed substantially V-shaped and is integral with two adjacent U-shaped with its two free ends

Areas 10 ^''' , in particular the webs 18a ^''' , 18b ^'''of the U-shaped regions 10 ^''' , connected. The third connecting web 29 is integrally connected with its free ends in a region of the webs 18a ^''' , 18b ^''' between the bend 24 ^''' and the first connecting web 21 ^{''' of} a U-shaped portion 10 ^''' . The third

Connecting web 29, which is arranged in a gap between two U-shaped regions 10 ^''' , has a small web width than the webs 18a ^''' , 18b ^''' and the first connecting web 21 ^{''' of} the U-shaped areas

10 ^''' . The V-shaped third connecting web 29 is designed to be open in the radially inward direction, so that a closed end 30 of the third Connecting web 29 is directed radially outward. With its closed end 30, where is the third

Connecting web 29 has a bend, the third connecting web 29 can form an additional contact point radially outside of the contact spring ring 7 ^''' . The

closed end 30 of the third connecting web 29 terminates in the embodiment shown here flush with the first connecting web 21 ^'''of the U-shaped portions 10 ^'' from.

Reference sign list

Insulating housing 1

Free end 2 cables 3

First area 4

Coat 5

Shield 6

Contact spring ring 7 ', 7' ', 7' '' end section 8

Wire 9

U-shaped area 10 ^' , 10 ^'' , 10 ^'''

Insulator 11

Umbrella sleeve 12 Second clearance 13

Inner wall 14

First free space 15

Free end 16

Latching means 17 web 18a ^' , 18a ^'' , 18a ^''' , 18b ^' , 18b ^'' , 18b ^'''

Bulge 19

Stop surface 20

First connecting web 21 ^' , 21 ^'' , 21 ^'''

Recess 22 second connecting web 23 ^' , 23 ^'' , 23 ^'''

Bend 24 ^' , 24a ^'' , 24b ^'' , 24 ^'''

Insulating material 28

Third connecting bridge 29

Closed end 30 Third free space 33

Claims

claims

1. contact spring ring (7 ^' , 7 ^'' , 7 ^''' ), with

a plurality of annularly arranged U-shaped regions (10 ^' , 10 ^'' , 10 ^''' ), which in each case two substantially mutually parallel webs (18a ^' , 18a ^'' , 18a ^''' , 18b ^' , 18b ^'' , 18b ^''' ), wherein the webs (18a ^' , 18a ^'' , 18a ^''' 18b ^' , 18b ^'' , 18b ^''' ) of a U-shaped

Area (10 ^' , 10 ^'' , 10 ^''' ) at a radially outer end of the webs (18a ^' , 18a ^'' , 18a ^''' , 18b ^' , 18b ^'' , 18b ^''' ) via a first Connecting web (21 ^' , 21 ^'' , 21 ^''' ) are interconnected,

wherein adjacently arranged U-shaped regions (10 ^' , 10 ^'' , 10 ^''' ) at a radially inner end of their webs (18a ^' , 18a ^'' , 18a ^''' , 18b ^' , 18b ^'' , 18b ^''' ) over a second

Connecting web (23 ^' , 23 ^'' , 23 ^''' ) with each other

are connected, and

wherein the U-shaped regions (10 ^' , 10 ^'' , 10 ^''' ) in the region of their substantially mutually parallel webs (18a ^' , 18a ^'' , 18a ^''' , 18b ^' , 18b ^'' , 18b ^''' ) have at least one bend (24 ^' , 24a ^'' , 24b ^'' , 24 ^''' ).

Second contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) according to claim 1,

characterized in that the U-shaped regions (10 ^' , 10 ^'' , 10 ^''' ) in the region of their

Substantially mutually parallel webs (18a ^' , 18a ^'' , 18a ^''' , 18b ^' , 18b ^'' , 18b ^''' ) a first bend (24 ^' , 24a ^'' , 24b ^'' , 24 ^''' ) and a second bend (24 ^' , 24a ^'' , 24b ^'' , 24 ^''' ).

3. Contact spring ring (7 ^' , 7 ^'' , 1 ^''' ) according to claim 2, characterized in that the first bend (24 ^' , 24a ^'' , 24b ^'' , 24 ^''' ) and the second bend ( 24 ^' ,

24a ^'' , 24b ^'' , 24 ^''' ) have different sized bending radii.

4. Contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) according to claim 2 or 3, characterized in that the second bend (24 ^' , 24a ^'' , 24b ^'' , 24 ^''' ) closer to the radially inwardly lying second connecting web (23 ^' , 23 ^'' , 23 ^''' ) is formed as the first bend (24 ^' , 24a ^'' , 24b ^'' , 24 ^''' ), wherein the bending radius of the second

Bend (24 ^' , 24a ^'' , 24b ^'' , 24 ^''' ) is smaller than the bending radius of the first bend (24 ^' , 24a ^'' , 24b ^'' ,

24 ^''' ).

5. Contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) after one of

Claims 1 to 4, characterized in that a U-shaped area (10 ^' , 10 ^'' , 10 ^''' ) with an adjacently arranged U-shaped area (10 ^' , 10 ^'' , 10 ^''' ) over a third

Connecting web (29) for forming a further contact point radially outside of the contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) is connected.

6. contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) according to claim 5,

characterized in that the third connecting web (29) is V-shaped.

7. Contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) after one of

Claims 1 to 6, characterized in that the contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) of a

disk-shaped metal element is formed, wherein the webs (18a ^' , 18a ^'' , 18a ^''' , 18b ^' , 18b ^'' , 18b ^''' and connecting webs (21 ^' , 21 ^'' , 21 ^''' , 23 ^' , 23 ^'' , 23 ^''' , 29) are formed by lasering, punching or etching the disk-shaped metal element.

Plug-in connector, with at least one contact spring ring (7th to 7th according to one of Claims 1 to 7)

Connector according to claim 8, characterized in that the connector is an insulating housing (1),

within which a free end (2) of a cable (3) is inserted, a plurality of contact elements, which are connected to the wires (9) of the cable (3), and a

Umbrella sleeve (12), wherein the contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) on a first stripped portion (4) of the free end (2) of the cable (3) on which the wires (9) of the cable (3) surrounding shielding (7) is arranged, wherein in front of and behind the

Contact spring ring (7 ^' , 7 ^'' , 7 ^''' ), the cable (3) by a jacket (5) of the cable (3) is surrounded, wherein the contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) of the shielding sleeve (12) is enclosed, wherein the shielding sleeve (12) on the jacket (5) of the cable (3) in front of and behind the

Contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) is attached.

10. Connector according to claim 9, characterized in that the contact spring ring (7 ^' , 7 ^'' , 7 ^''' ) through the shielding sleeve (12) is stretched.

11. Connector according to claim 9 or 10, characterized

characterized in that at a free end (16) of the shielding sleeve (12) on which the connector means the shielding sleeve (12) can be fastened to a wall, a second electrically conductive contact spring ring (7 ^' , 7 ^'' ) is inserted into a recess (22) formed on the shielding sleeve (12).