DE19710422C1 - Socket or electrical connector with contact spring and socket as connection contact - Google Patents

Description

The present invention relates first to a socket and further Meaning a contact spring provided with an inventive socket and provide one with a contact spring with inventive socket electrical connector.

Sockets as elements of electrical engineering are known for example from BROCKHAUS, "Natural Sciences and Technology", Volume A-EK, FA. Brock haus-Wiesbaden 1983, p. 183, ISBN 3-7653-0357-7.

In the case of sockets, hereinafter referred to briefly as sockets, there is initially the problem, the connector pin referred to below in the Need to insert socket. After inserting the contact pin into the There is the problem that the contact pin, on the one hand, is good and durable, So immovable, must be held in the socket, the holding forces however, must be such that the contact pin can also be removed at any time the socket can be pulled out. Finally, the socket has to be procured be that the contact between the contact pin and socket is not by a multiple fa The insertion and removal of the contact pin from the socket deteriorate allowed.  

From EP-A 0 701 299 one for receiving both cylindrical cones clock pins as well as flat contact plugs suitable socket known. At flank this socket when the contact pin or contact plug is inserted two contact surfaces the contact pin or contact plug. So far the known Socket for receiving cylindrical contact pins is one of the contacts surfaces as a guide surface and the other contact surface as a friction surface shapes. The guide surface is here with projections for positive guidance tion of the contact pin, while the friction surface rubs the contact pin fixed in the socket.

From DE-U-76 12 257 a special electrical contact element for Ver Binding of circuit boards and cables known. This contact element also has a socket for receiving a contact pin. However, this is Contact pin only stored at three points within the socket. Namely on two cams of a frame and a point opposite the cams a spring leg of a contact spring. The contact pin is when inserted in the socket in this known contact element is not performed. In addition ge the unstable three-point fixation of the contact pin in the socket does not last the present invention aimed for good and durable, as unshakeable the contact pin is seated in the socket.

The same applies to the plug-in terminal connections known from DE-U-76 19 342 se. Again, the contact pin is very unstable and not when inserted led safely.

In all the above-mentioned, known from the prior art sockets also disadvantageous that they basically only an introduction of the contact pin in enable a direction of insertion. This possibility of plugging in just one Direction, significantly reduces the flexibility of use of the known sockets Lich. If the socket is provided on a prismatic part, can for example, it may be desirable to have this part in both vertical and hori  to be installed in a central arrangement. When using the known sockets In this case, two separate types of socket must be provided in order to to enable both assembly orientations.

Based on the disadvantages described, the invention has the object reasons to create a socket with two different plug directions, at which contact pin can be safely inserted into the socket and in one mated condition is well held in the socket. This task is through the Combination of features of claim 1 in an advantageous and inventive manner solved.

According to the preamble of claim 1, there are two contact surfaces in the socket provided which receive the contact pin between them.  

One of the two contact surfaces acts as a guide surface. For this are on the guide surface projections are provided, which with the contact pin Form positive guidance. Because the contact pin when inserted into the Is guided in the guide, is easy to insert or pull out of the contact pin from the socket guaranteed.

To fix the inserted contact pin in its inserted position second contact surface formed as a friction surface. She also submits on this jumps, which, however, form a frictional connection with the contact pin. This Friction is designed so that those acting as holding forces on the contact pin Plug pins easily by hand force when inserting the contact pin can be wounded. The contact pin is tilted when it is inserted through the positive guidance on the other effective as a guide surface Contact surface effectively prevented.

According to the characterizing part of claim 1, the projections form additional Lich protrudes from the plane of the contact surface on each contact surface Relief. Both reliefs are identical. This is technically good stig, because both reliefs can basically be made with one and the same tool are. This lowers tool costs.

The preferably mutually parallel contact surfaces are be Regarding an imaginary, perpendicularly penetrating both contact surface levels Swivel axis pivoted against each other. The pivot angle is here at really larger than 0 ° and really smaller than 180 °. The central longitudinal axis of the Relief projections formed guides therefore run in different directions exercises. Due to this different direction of the guides on the Both contact surfaces are each of these directions as insertion direction for the plug can be used. It is evident that only the protrusions per insertion direction a relief of a contact surface as a form-fitting guide with the contact pin can cooperate with the result that the other leadership is inactive  is. Form due to the pivoted position of the contact surfaces against each other the projections of the relief with the inactive guide with the contact pin a frictional connection. With the invention it is therefore possible to make a socket design that two plug directions can be realized with a socket, each because a contact surface as a guide surface and not as a guide surface effective contact surface are effective as a friction surface. The reliefs on the contact surfaces thus have an inventive double function.

The back claims relate in part to inventive and self-inventing partially useful further developments of the inven claimed in claim 1 dung.

According to the teaching of claim 2, the reliefs and thus the two contact surfaces Chen around the imaginary swivel axis with an offset of 90 ° to each other panned. The two plug directions that can be implemented with the socket run exactly perpendicular to each other. Relating to an imaginary, rectangular bushing This means that the contact pin in one direction of the housing Back of the housing towards the front of the housing or from the housing can be pushed in towards the rear of the housing, while in the other direction from the bottom of the housing towards to the top of the housing or from the top of the housing towards Ge bottom of the housing can be inserted. This means that with an ent speaking number of openings the imaginary housing of each of its be can be contacted by means of a contact pin.

By means of the socket according to the invention it is therefore possible to have a standard housing prefabricated for an electrical connector, which in numerous Relative positions on a corresponding one, provided with a contact pin electrical component can be connected. A variety of built-in units lungs of the part provided with the inventive bushing compared to  corresponding part provided with the contact pin are thus constructive very easy way.

Claim 3 relates to a structurally simple and therefore inexpensive to manufacture bare geometry of the relief. The relief is in the form of a V or U shape tion groove designed, the end faces of the two groove legs from the plane project out of the contact surface and thus as projections in the sense of the invention are effective. The relief designed in this way has the effect that the Guide groove inserted contact pin with the groove form an open path guide det, while the end faces of the groove legs of the inactive groove on the other Contact surface in the manner of two parallel brake ribs in the direction of the cone protrude tact pin and hold the contact pin frictionally. As a result of the Rei Exercise the contact pin on the end faces of the groove legs of the inactive guide The contact pin is automatically grooved when it is inserted or corrosion residues cleaned so that there is always good electrical contact between contact pin and socket is guaranteed.

The use of sheet metal as the bushing material is particularly advantageous Claim 4, in which the Reli preferably formed as guide grooves efs can simply be molded as beads. In addition, both can Contact surfaces are resilient to improve both me mechanical as well as electrical contact with the inserted con clock pin. The socket can be produced particularly cost-effectively with the aid of a Stamping and bending process as specified in claim 5. Here, the ge Whole material required for the socket is punched out of a sheet of metal and then by reshaping it into the desired geo be brought.

It is advantageous to improve the properties of the socket according to the solution as an additional guide in its cross-sectional shape to the geometry of the Provide contact pin adapted insertion opening, as in claim 6 bean  speaks. The contact pin is then initially in the insertion opening during insertion guided. The insertion opening complements the above-described open web guide a partially closed path. The insertion of the contact pin is additionally relieved in this way. In particular, tilting of the con clock pin in the socket and thus an undesired wear of the socket additionally prevented. It is also the interface between the contact pin and the book se additionally secured by means of the insertion opening, which creates unwanted tension flashovers or leakage currents additionally prevented.

Claims 7 and 8 relate to stringent developments of that in claim 5 punch-bending technique mentioned. The insertion openings are next to the con tact areas simply stamped into sheet metal brackets. In the final production state the The area with the punched insertion opening is then simply against the socket bent at right angles over the adjacent contact surface. The order an insertion opening next to the friction surface in relation to this insertion opening effective contact area is space-saving because the guide groove is very close to the Insertion opening can be attached. By simply bending the individual Areas of the metal sheet can have the insertion openings and guide grooves in the desired relative position to each other are formed. This manufacture is easy to automate and therefore inexpensive.

Claim 10 relates to the synergistic effect of the above-described individual features. According to the teaching of claim 10, the embodiment claimed there Rungsform the inventive socket two to the outer geometry of each because of the contact pin adapted insertion openings. With every insertion opening each have a guide surface and an opposite friction surface together. With the socket claimed there, it is therefore possible to use two insertion directions perpendicular to each other that verse with the socket to contact the electrical component.  

Claim 11 relates to a further embodiment of the socket with a or several additional cones formed on at least one sheet metal bracket clock elements. Such a contact element can be a solder pin, for example, for connecting the device provided with the socket to a printed circuit board or another device. The additional contact element then serves as it were as primary connection. The remaining, unused inventive ones Sockets can be used as secondary connections, for example for parallel connection or to bridge several Ge provided with the inventive bushings serve councils. The individual devices can ori different from each other be entiert what due to the variability of the inventive socket is possible.

The claims 12 and 13 relate to a per se from the European patent known publication with the publication number EP-A-0 735 616 the one for an electrical connector. The be in claims 12 and 13 stressed contact spring is similar in its construction with regard to its connection end the contact spring known from the European patent application. In the Contact spring according to claim 13 is the socket claimed here as a socket con clock is effective at the contact end for direct plug connection. According to claim 13 serves the additional contact element known from claim 11 as a connection on Contact end of the contact spring, while the socket is only for receiving an additional bridging contact, for example a contact comb, is used. Claims 14 and 15 finally concern the whole of the aforementioned ten European patent application known electrical connector of the. According to claim 14, the inventive socket of the local He serves Finding the known connector as a contact end to the connector by means of the direct ones prescribed in the European patent application To be able to fix plug-in technology on a printed circuit board.

According to the teaching of claim 15, the bean in turn serves in claim 11 wanted additional contact element as a solder pin to fix the connector  direct plug-in technology on the circuit board. The inventive socket is used in this embodiment to hold one prong of a con cycle comb. With the help of the contact comb, several plug connectors can be bridge clocks together. This bridge is required, for example, to to connect several protective conductor contacts to each other because of an electrical one Connection of protective conductor contacts via conductors of a printed circuit board made of si safety reasons not possible or by appropriate standards is prohibited. Of course, it is also possible to have several contacts of a connector to connect in parallel or in series using a contact comb.

Based on the embodiments shown in the drawings, the inven described in more detail. Show it:

Fig. 1 is a sectional side view of a contact spring with erfindungsmä FLOWING socket and dashed lines two ways to introduce in each case one contact pin,

Fig. 2 shows the section II-II in Fig. 1,

Fig. 3 shows the section III-III in Fig. 1,

Fig. 4 is a side view of a contact spring element without additional Kontaktele,

Fig. 5 is a plan view of the back of the contact spring according to arrow V in Fig. 4,

Fig. 6 is a side view of a contact spring with a downwardly abgebo genes additional contact element,

Fig. 7 is a plan view of the back of the contact spring according to arrow VII in Fig. 6,

Fig. 8 is a side view of a contact spring with a projecting rearwardly the additional contact element,

Fig. 9 is a view of the underside of the contact spring according to arrow IX in Fig. 8,

Fig. 10 is a side view of a spring contact used in a connector housing according to Fig. 4,

Fig. 11 is a side view of a spring contact used in a connector housing of FIG. 6,

Fig. 12 is a side view of a spring contact used in a connector housing of FIG. 8,

Fig. 13 is a sectional view of a connector shown in FIG. 11 with a perpendicular to the additional contact element contact comb for the purpose of bridging,

FIG. 14 is a sectional view of a connector according to FIG. 12 with a contact comb running parallel to the additional contact element for the purpose of bridging and

Fig. 15 two sheet metal stamping blanks of the contact springs of Fig. 6 or FIG. 8 before bending.

The operation of the socket according to the invention is explained using the contact spring known from the above-mentioned European patent application EP-A-0 735 616 or the connector known from the European patent application. The contact spring 1 has a connection end 2 and a Kon clocking 3 even at the local embodiments. In the area of the connection end 2 , a conductor (not shown) can be inserted into the contact spring 1 in the insertion direction 4 and can be contacted with the latter. The conductor, not shown, is held in this embodiment between the spring roof 5 and the connection end 2 of the contact spring 1 . Finally, the lug 6, which is bent out between the connection end 2 and the contact end 3, serves to fix the contact spring 1 in a connector housing. With regard to further constructive details of the contact spring or the introduction of the contact spring into a connector housing, reference is expressly made to the content of the aforementioned European patent application EP-A-0 735 616. The entire disclosure of the European patent application is also intended to apply expressly to the application here. Reference is therefore expressly made to the disclosure of the European patent application, insofar as the teaching of the invention here does not expressly conflict with the disclosure there.

In Fig. 1, the contact pin 7 is shown in dash-dotted lines. This is intended to express that the contact pin 7 can be inserted into the socket region 12 of the contact spring 1 both through a bottom opening 9 arranged on the underside 8 of the contact spring 1 and through a back opening 11 attached to the rear side 10 of the spring.

The contact pin 7 (not shown in FIG. 2) can be inserted into the socket from the rear 10 through the back opening 11 which acts as an insertion opening. The sheet metal tabs 14 , 14 'protrude into the socket cavity 13 . In each of the Blechla's 14 a cross-sectionally U-shaped guide groove 15 is formed. The end sides 16 of the grooved legs 17 , 17 'serve as projections in the sense of the invention. The contact pin 7 is guided in the guide groove 15 by the grooved legs 17 , 17 '. Relative to an imaginary, perpendicular to both sheet metal brackets fende pivot axis 18 , the sheet metal tabs 14 , 14 'against each other by 90 ° pivots. While the guide groove 15 of the sheet metal plate 14 shown on the right in FIG. 2 extends in the horizontal insertion direction 19 , the corresponding guide groove 15 of the sheet metal tab shown on the left in FIG. 2 extends in the vertical insertion direction 20 . The guide grooves of the two sheet metal tabs 14 , 14 'consequently run at right angles to one another. The end faces 16 of the guide groove 15 of the sheet metal tab 14 shown on the left in FIG. 2 consequently run at right angles to the central longitudinal axis 21 of the contact pin 7 inserted in the horizontal insertion direction 19 in FIG. 2 and are thus effective as brake ribs. The end faces 16 of the guide groove 15 of the sheet metal tab 14 ′ shown on the left in FIG. 2 form a frictional connection together with the contact pin 7 for the plug-in fixing of the contact pin 7 in the socket cavity 13 .

Accordingly, the functions of the sheet metal tabs 14 , 14 'in the illustration in FIG. 3 are interchanged with the illustration in FIG. 2. In the illustration of Fig. 3, the sheet metal clip shown in the upper portion of the figure 14 'of the depicted in FIG. 2, the left sheet metal clip 14' corresponds. Accordingly, the sheet metal bracket 14 shown in the lower part of FIG. 3 is identical to the sheet metal bracket 14 formed in the right part of FIG. 2. Since the contact pin 7 shown there in FIG. 3 is inserted into the socket cavity 13 in the vertical right insertion direction 20 , that is to say the central longitudinal axis 21 of the contact pin 7 extends there in the vertical insertion direction 20 , in this embodiment it is shown in the upper part of the figure Sheet metal tab 14 'molded guide groove 15 with its Nutschen 17 , 17 ' effective as a guide groove 15 , while the end faces 16 of the opposite, on the sheet metal tab 14 shown in the lower region of FIG. 3 as brake ribs to form a positive connection with the contact pin 7 nen.

Each of the guide grooves 15 thus has a double function. Run the central longitudinal axis 21 of the contact pin 7 and the guide groove 15 in the same direction of insertion, the cylinder jacket of the contact pin 7 and the guide groove 15 form a positive open path with each other. Accordingly, the central longitudinal axis 21 of the contact pin 7 and the other guide groove 15 perpendicular to each other, which leads to the fact that the end faces 16 of the groove legs 17 , 17 'of the guide groove 15 perpendicular to the central longitudinal axis 21 of the contact pin 7 are effective as brake ribs. In this case, the guide groove 15 and the cylinder jacket of the contact pin 7 form a frictional engagement for holding the contact pin 7 in its inserted position in the socket cavity 13 . The guide grooves 15 and in particular the end faces 16 of their Nutsche angles 17 , 17 'consequently have a double function according to the invention.

From Fig. 4 and Fig. 5 it can be seen that from the sheet metal tab 14 'is a Teilbe rich bent at right angles to form a back 10th In the Rücksei te 10 , the back opening 11 is formed. Since the contact spring 1 is made of sheet metal, the back opening 11 is simply punched into the sheet metal part and then bent 90 ° relative to the sheet metal tab 14 . In Fig. 4 is still recognizable bar extending in the horizontal direction of insertion guide groove 19 15th

The contact spring 1 'shown in FIGS . 6 and 7 is constructed with respect to its connecting end 2 and the socket cavity 13 identical to the contact spring 1 according to FIG. 4 described above. It differs only in that the solder pin 22, which points at a right angle from the bottom 8 downward, is formed on the underside 8 as an additional contact element. The solder pin 22 thus points in the vertical insertion direction 20 . FIGS. 6 and 7 thus relate to a design of the contact spring 1 ', which is particularly adapted to be mounted with its lower side 8 to a part to be connected.

If there is a need to contact the contact spring 1 'on its back 10 by means of a soldering pin 22 on another part, the embodiment of the contact spring 1 ''shown in FIGS. 8 and 9 is suitable for this. In the case of the contact spring 1 ″, the solder pin 22 ′ points in the horizontal insertion direction 19 from the rear side 10 and extends parallel to the underside 8 .

Fig. 10 finally shows the built-in an insulating housing 23 embodiment of the contact spring 1 according to FIG. 4. The contact spring 1 is fixed with the help of the Fixierlap pen 6 in the insulating housing 23 . The insulating housing 23 has a Lei terauge 24 through which a conductor, not shown in the drawings, can be inserted into the insulating housing 23 for contacting the closing end 2 of the contact spring 1 . To make contact with the connector, the connector can be placed on an underside 25 of the insulating housing on a circuit board, also not shown. In the Isoliergehäuseuntersei te 25 then a in the vertical insertion direction 20 contact pin 7 can be inserted through the housing bottom opening 26 into the socket cavity 13 . Analogously to this, a contact pin 7 can be inserted into the socket cavity 13 in the horizontal insertion direction 19 through the housing back opening 28 provided in the rear side 27 of the housing. However, it is equally possible to provide only one housing bottom opening 26 or one housing opening 28 in the insulating housing 23 of the connector. The insertion direction 19 , 20 for the contact pin 7 is thus firmly defined from the outset. In this way it can be prevented in the manner of a coding that the Iso lier housing 23 of the connector is placed in a wrong orientation, for example on a circuit board. It is advantageous here that the same embodiment of the contact spring 1 can be used both for the horizontal insertion direction 19 and for the vertical insertion direction 20 . If the housing bottom opening 26 or the housing back opening 28 is closed, the correspondingly assigned bottom opening 9 or back opening 11 of the contact spring 1 is also deactivated. Finally, it is also possible, on the Gehäuseo berseite 29 is a housing cover opening 30 pin 7 watch for inserting a contact of the housing top side 29 forth in the perpendicular direction of insertion 20 in front.

Again, the Fig. 11 shows an insulating housing 23 having a forward end with a ter senkrech in the insertion direction 20 solder pin 22 provided contact spring 1 '. With the help of the solder pin 22 , the insulating housing 23 with its insulating housing 25 can be placed on a component, for example a printed circuit board. If it is desired to place the insulating housing 23 with the rear side 27 of the housing, this is possible with the plug connector shown in FIG. 12. In the connector shown in Fig. 12 that embodiment of the contact spring 1 '' is integrated in the insulating housing 23 , in which the solder pin 22 'in horizontal insertion direction 19 protrudes from the housing rear 27 .

In Fig. 13 the embodiment of the connector shown in Fig. 11 is shown again. In addition to the individual units shown in FIG. 11, it shows the contact comb 31 introduced through the housing back opening 28 from the rear side 27 of the housing into the socket cavity 13 . The contact comb 31 is used to bridge several contacts formed by contact springs 1 'in the connector. Since the printed circuit board connector liergehäuseunterseite of FIG. 13 with the Iso seated 25 on a circuit board with which the Steckver binder by means of the pointing in the vertical direction of insertion 20 soldering pins 22 ver connected, the contact ridge 31 is even with an attached to the printed circuit board connector freely mountable and demountable . In contrast, if he desires to remove the dismantling of the contact arm 31 with the connector installed, the contact comb 31 is simply introduced from the housing side 25 , 27 , 29 into the socket cavity 13 with which the connector sits on the circuit board. This is shown in FIG. 14. There, namely, the insulating housing 23 of the connector is connected to the printed circuit board by means of the soldering pin 22 'pointing in the horizontal insertion direction 19 . The connector is therefore with its housing back 27 on the circuit board. Since the contact comb 31 is in turn introduced through the housing back opening 28 into the socket cavity 13 , the contact comb 31 is closed to a certain extent by the circuit board adjoining the rear side 27 of the housing.

Fig. 15 shows, finally, the handling of the sheet metal stamped part for producing the contact spring 1 ', 1' '. From the sheet 32 , the punching pattern 33 for the contact spring 1 ', 1 ''is punched out. The individual stamping patterns 33 are molded onto the strips 34 . The strips 34 are moved for production in the direction of manufacture 35 . For moving the strips 34 in the direction of manufacture 35 are provided cher 36 Förderlö, in which spikes a conveyor for moving the Stripes fen 34 can engage in the direction of manufacture 35th

The punching patterns 33 point to the connection ends 2 of the contact springs 1 ′, 1 ″ to be bent later and to the solder pin 22 , 22 ′ which may have to be bent. Furthermore, the sheet metal tab 14 can be seen with the guide groove 15 sunk into it and the insertion opening which later forms the bottom opening 9 . To manufacture the contact spring 1 ', 1 '', the sheet metal tab 14 is simply folded up around the bending edge 37 from the drawing plane of FIG. 15.

The further sheet metal tab 14 'with the guide groove 15 assigned to it and the insertion opening which later becomes the back opening 11 can also be seen . To produce the contact spring 1 ', 1 '', the sheet metal tab 14 ' around the longitudinal bending edge 38 is bent upwards out of the drawing plane of FIG. 15. In addition, the area of the sheet metal plate 14 'which later has the back opening 11 ' is still folded upward about the transverse bending edge 39 from the plane of the drawing in FIG. 15. As a result of the deformation of the sheet metal tab 14 'around the longitudinal bending edge 38 and the additional deformation of the area with the later back opening 11 and the transverse bending edge 39 , the back opening 11 is later with its plane of opening perpendicular to both the sheet metal tab 14 ' associated with the guide groove 15 and Floor opening level 9 .

Finally, the spring roof 5 is bent out about the spring roof bending edge 40 from the drawing plane of FIG. 15. As a result of the 90 ° bend along the longitudinal bending edge 38 , the plane of the spring roof 5 extends parallel to the underside 8 in the final production state of the contact spring 1 ', 1 ''.

The solder pin 22 , 22 'is either left in its orientation as in the stamping pattern 33 . However, if the solder pin from the underside 8 is perpendicular to the bottom, the solder pin 22 'is bent downward around the solder pin bending edge 41 , that is to say into the plane of the drawing in FIG. 15, from the underside 8 . To manufacture a contact spring 1 without an additional contact element, the solder pin 22 , 22 'is simply cut away or punched away. Before the bending is formed, the punching pattern 33 is separated from the strip 34 along the dividing lines 42 by a punching cut. The advantage of the above-described stamping and bending technology is that it can be automated easily, which results in cost-effective production of the contacts of 1 , 1 ', 1 ''.

Reference list

1,

1

'

,

1

'' Contact spring

2nd

Connection end

3rd

Contact end

4th

Direction of insertion

5

Feather roof

6

Fixing rag

7

Contact pin

8th

bottom

9

Bottom opening

10th

back

11

Back opening

12th

Socket area

13

Socket cavity

14,

14

'' Sheet metal tab

15

Guide groove

16

Face

17,

17th

'' Nut leg

18th

imaginary swivel axis

19th

horizontal insertion direction

20th

vertical insertion direction

21

Central longitudinal axis

22,

22

'Solder pin

23

Insulating housing

24th

Ladder eye

25th

Insulation housing underside

26

Case bottom opening

27

Rear of housing

28

Back opening

29

Top of the housing

30th

Housing cover opening

31

Contact comb

32

Metal sheet

33

Stamping pattern

34

Stripes

35

Production direction

36

Production hole

37

Bending edge

38

Longitudinal bending edge

39

Transverse bending edge

40

Spring roof bending edge

41

Solder pin bend edge

42

parting line

Claims (15)

1. socket with two contact surfaces ( 14 , 14 ') for receiving a contact pin ( 7 ),

• 1. - whose contact surface ( 14 ) is a guide surface with projections ( 16 ) for positive guidance of the contact pin ( 7 ) when inserted into the socket and
• 2. - whose second contact surface ( 14 ') is a friction surface with projections ( 16 ) for frictionally fixing the contact pin ( 7 ) in its insertion position in the socket,
  characterized by
• 3. - That from the projections ( 16 ) formed reliefs on both contact surfaces ( 14 , 14 ') are identical and
• 4. - that the two contact surfaces ( 14 , 14 ') are pivoted at an angle in the range greater than 0 ° and less than 180 °.

2. Socket according to claim 1, characterized, that the reliefs are pivoted at an angle of 90 ° to each other.   3. Socket according to one or more of the preceding claims, characterized by a complementary to the geometry of the contact pin ( 7 ) Füh approximately groove ( 15 ) as a relief with the end faces ( 16 ) of the groove legs ( 17 , 17 ') as projections. 4. Socket according to one or more of the preceding claims, characterized in that both contact surfaces are sheet metal tabs ( 14 , 14 ') with molded beads as guide grooves ( 15 ). 5. Socket according to one or more of the preceding claims, characterized in that the sheet metal tabs ( 14 , 14 ') are made from a metal sheet by means of a stamping and bending process. 6. Socket according to one or more of the preceding claims, characterized by an insertion opening ( 9 , 11 ) with a cross-sectional shape of the contact pin ( 7 ) adapted opening cross-section. 7. Socket according to claim 6, characterized in that in the sheet metal tabs ( 14 , 14 ') in addition to the contact surfaces each have a guide opening ( 9 , 11 ) is stamped. 8. Socket according to claim 7, characterized in that in the final production state of the socket, the contact surface is bent at right angles to the insertion opening ( 9 , 11 ) stamped next to it into the sheet metal tab ( 14 , 14 '). 9. Socket according to claim 8, characterized in that the insertion direction of the Füh tion formed on the contact surface ( 15 ) at right angles to the direction of insertion adjacent to the sheet metal tab th insertion opening ( 9 , 11 ). 10. Socket according to claims 2 and 9, characterized in

• 1. - that the insertion openings ( 9 , 11 ) are at right angles to each other in the finished state of the socket,
• 2. - That on the contact surface of the other Einführöff opening ( 9 , 11 ) belonging to the sheet metal tab ( 14 , 14 ') relief formed as a guide ( 15 ) for the contact pin ( 7 ) is effective and
• 3. - That the relief formed on the same sheet metal tab ( 14 , 14 ') as the insertion opening ( 9 , 11 ) acts as a friction surface.

11. Socket according to one or more of the preceding claims, characterized in that one or more additional contact elements ( 22 , 22 ') are integrally formed on at least one sheet metal tab ( 14 , 14 '). 12. Contact spring ( 1 ) for connecting a conductor with at least one socket se according to one of claims 1 to 11, characterized in that the socket of the socket contact is a direct plug connection of the contact spring ( 1 ) with an electrical component. 13. Contact spring for connecting a conductor with at least one socket according to claim 11, characterized in that

• - That the additional contact element ( 22 , 22 ') of the plug pin of a direct plug connection of the contact spring ( 1 , 1 ', 1 '') with an electrical construction element and
• - That the socket is a contact socket for the contacting Aufnah me a prong of a contact comb ( 31 ).

14. Electrical connector with an insulating housing ( 23 ) and one of the number of its electrical connections corresponding number of Kontaktfe countries ( 1 ) according to claim 12, characterized in that the socket as the contact end ( 3 ) of the respective contact spring ( 1 , 1 ', 1 '') is effective. 15. Electrical connector with an insulating housing ( 23 ) and one of the number of its electrical connections corresponding number of contact springs ( 1 ) according to claim 13, characterized in that

• 1. - That the connector by means of te as a pin Kontaktelemen te ( 22 , 22 ') is directly mounted on a circuit board and
• 2. that each of the sockets each has a prong of a contact comb ( 31 ) for bridging several connections of the connector miteinan.