EP2015405A2 - Electric plug connector - Google Patents

Abstract

The connector has contact receiving areas including inner surfaces covered by parallel running twisted contact lamellas (4), where total area of the inner surfaces extends to 20 to 40 percent of the connector. A surface of a gap formed by the lamellas covers 60 to 80 percent of the connector. A hyperbolic twisted contact retainer (3) is arranged on inner margins (7a, 7b). The retainer is selected such that diameter in a lamella area (6) is narrowed down in a range of 84 to 89 percent corresponding to an inner diameter in an area of the margins.

Description

The invention relates to an electrical connector, comprising a socket contact and a plug pin according to the preamble of claim 1. Connectors, in particular connector sockets of the type mentioned are also referred to as RADSOK contacts and are characterized in particular in that their contact area is cage-like, ie that a cylindrical or semi-cylindrical hollow body is designed, which preferably has contact blades in the longitudinal direction or contact spring arms for contacting with the plug pin. For cost reasons socket contacts of the type mentioned are usually made as a stamped part of a metal sheet. In the prior art cylindrical socket contacts are known, which are stamped from a metal sheet, wherein the cylindrical bushing body itself is generated by rolling or bending and rolling of the punching plate. Such a connector is for example from the DE 197 34 524 C2 known. Here, a cylindrical socket contact, consisting of a contact part and a connecting part, shown, wherein the contact part has a cylinder jacket and the cylinder jacket is formed with at least one stamped from the jacket contact spring tongue, which dive into the receiving area of the cylinder, so that a pin with this Contact spring elements can contact as soon as it is plugged into the cylindrical socket contact. The fact that spring tongues are punched out of the cylinder jacket and are bent into the inside of the socket, defined contact surfaces can be created. This already represents an improvement in the reproducibility of the contact situation. However, the elasticity of these contact springs is not ideal. Also, the contact pressure is insufficient for the transmission of high currents. Regarding the elastic properties, long contact springs require excellent elastic properties, but the large spring travel reduces the desired contact pressure. Short contact springs make insertion of the mating connector difficult, but provide acceptable contact pressure. In the DE 100 05 297 A1 is shown another connector system with a cylindrical contact socket. Here, the socket contact is formed from a cage, which in turn was formed as a stamped grid or cage stamped grid, that is designed as a longitudinally slotted in the insertion direction hollow body, which preferably also in the circumferential direction is twisted. This results in a cylindrical hyperbolic socket body for receiving a corresponding connector pin, which rests in the inserted state on a plurality of these strip-shaped fins of the contact piece. The disadvantage here, however, that the pin contacts the contact blades only partially, so punctiform bears against the contact blades and only small partial contact surfaces between the pin and the contact blades of the socket are present. Similar connectors are in the DE 35 28 587 and the US 4,720,157 described.

The DE 1 157 281 discloses a socket for male and female contactors in which the socket internally has a number of contact wires which, with elastic deformation, bear against the plug as it is plugged into the socket.

Since the present contact device is merely an elastic deformation, the disadvantage is that the elongation of the contact wires can only lie in a specific region, namely the elastic region, of such wire materials.

A disadvantage in particular of contact wires is also the fact that a point to maximally linear contact with the mating connector is to be achieved by the round wires. Especially with contact bushings with the need for high currents, so there is a desire for a higher contact bearing surface.

Also known in the art, therefore, is a cylindrical contact element of the US 5,326,289 , Here, instead of contact wires contact blades are arranged between two circumferential collar webs, wherein the gutters are twisted to each other and thus form a cylindrical contact receiving space. However, it comes in the present form, as clearly visible in the figure, to the problem that the contact blades are only point, - or arranged linearly touchable, so that the contact arrangement known in the art is not satisfactory with a Contact pin surface comes to the contact system.

In the WO 00/70713 Another cylindrical bushing element is disclosed, which is designed as a cylindrical-hyperbolic contact bush with a surrounding jacket which supports the contact area. Furthermore, a method is disclosed how to make such a connector socket, as a result of punching, bending and twisting a Kontaktiametienbleches in the circumferential direction and attaching a contact sleeve to the contact socket, in the US 2004/0014370 A1 Another connector system is disclosed, which is manufactured in a similar manner as the aforementioned connector systems. Shown herein is a cylindrical hyperbolic connector socket made of a stamped sheet which is also formed by stamping, bending and rolling and then twisting the socket cage about the through-axis. In the shown in this document Fig. 2C is clearly seen that after twisting the actual contact cage, the contact blades constrict in the middle of the contact cage and there form a contact receiving space for contacting with a corresponding pin contact. In the Fig. 2G just mentioned document a circular cylindrical socket contact is shown, which is produced in an identical manner and is also constricted by twisting in its central region, whereby the lamellae are brought into a position to come into point with a corresponding pin contact point in the constriction. Clearly recognizable in the sectional images in the Figs. 5A to 5D is, the punctiform contacting of a contact pin with the contact blades. When using a rectangular pin, as in FIGS. 5A and 5B , it comes to the point-like contact of the contact pin with points in the middle of the contact blades in the constriction area, where the contact blades are constricted as a result of the torsion most. When using a round contact. It also comes to the point-shaped system in the contact blades. Such contact systems, which are produced by a hyperbolically twisted stamped cage grid, has the disadvantage that they form by the constriction, caused by the torsion of the cage grid, a contact receiving space, which allows punctiform or partially with a pin contact in a small area around the Contact contact point around.

Generic connector systems have in common that they have only insufficient contact surfaces, ie either only via contact points, which are defined by the group of contact springs with their corresponding contact surfaces with the contact pin.

Even if the socket contact is formed by a plurality of such contact springs, this is not sufficient for the transmission of desired high currents. The problem of heat dissipation is insufficiently solved in the aforementioned contact systems at high currents. The problems occur in particular in that to increase the heat dissipation usually thicker materials and solid pins are used to the detriment of the spring characteristics and the plug and pull forces. It would be large spring travel and thin materials necessary to produce optimal spring characteristics of the Kontaktysternes, however, which cause adverse characteristics regarding the current carrying capacity of such a connector system.

It is therefore the disadvantage to overcome only punctual and partial contact areas to use and it is insofar to provide an improved connector system, with a female contact whose contact blades surface with the pin contact over a maximum contact surface preferably almost over the entire contact blade with the outer contour of the corresponding pin contact Plant comes.

The present invention is therefore the object of a generic connector preferably a cylindrical or semi-cylindrical socket contact to improve so that a corresponding pin maximum contact surfaces achieved with the contact blades of the socket contact possible such that the contact blades area over their entire area on the pin to concern come at the same time good elastic properties, which simplify the insertion of the connector pin and lead in the mated condition to a large contact pressure. Another object of the invention is to provide a connector system which can transmit high currents with comparatively thin contact blades. Here, use cases are meant in which currents between 50 and 300 A, preferably over 100 A are to be transmitted. Another disadvantage of the connector systems of the type mentioned is the technologically not completely controllable problem of tolerances of several components to each other, in particular in a connector system consisting of several items, added.

Such connector systems therefore have the further disadvantage that contact pins in combination with different contact sockets each more or less sufficient Produce Kontaktanpressdruck and therefore the power transmission or the Stromtragfählgkelt of such a connector system is determined by the tolerances and Toleranziagen the items.

It is therefore another object of the present invention to provide a connector system which also solves the problem of tolerance, i. when plugging with pins with caused by the manufacturing tolerances different outer dimensions, a maximum contact surface or contact surface between the pin and the socket contact blades is generated.

This object is achieved by the features of claim 1. In the subclaims preferred embodiments of the invention are characterized. According to the invention, a socket contact is provided as a semi-cylindrical or cylindrical socket contact, which has a socket contact cage, which is so pronounced in its geometry that the contact blades form a receiving space for the plug pin such that the receiving space is just so much smaller with respect to the outer contour of the Plug pin that run in parallel with the plug pin in the lamellar cage receptacle of the socket contact three processes. On the one hand, a spring effect of the elasticity of the contact blade is generated substantially perpendicular to the insertion direction, that is directed radially outward is an elastic deformation, on the other hand, the invention by the simultaneous elastic and plastic stretching of the contact blades, which is crucial to the operation of the connector according to the invention Contribute to the achievement of a maximum contact surface of the contact system This is created by the fact that in addition to the rebound a defined longitudinal extension of Kontaktiamelle forced in the mating process. When plugging the plug pin in the contact receiving space of the contact socket, thus the contact blades are due to their defined shape and geometry and their number and position, as well as the twist angle in the cage grid in the situation that each contact blade in the longitudinal direction elastically and plastically deformed and along the surface of the contact pin flat applies. This ensures that, unlike connector systems of the prior art, such a contact blade more or less as a strained arc on the contact pin surface comes to rest, due to the extension of the contact blade in the longitudinal direction and thereby Conditional transition of the punctiform in the linear system and complete insertion into a sheet-like plant. This ensures that the contact blade as the chord of a Flitzebogens to the contour, ie outer contour, the contact pin leans and thus according to the invention a flat contact of the entire surface of the contact blade is achieved with the contact surface of the pin contact. At the same time, the tolerance of the pin is cushioned by the degree of deformation.

• Fig. 1 eine teilweise im Schnitt dargestellte Seitenansicht eines Buchsenkontaktes für eine elektrische Steckverbindung, die über einen Kontaktbereich mit einem käfigartigen Buchsenteil verfügt, bestehend aus tordierten Lamellen mit einer darüber geschobenen Schutzhülle, die aus dem Stand der Technik bekannt ist;
• Fig. 2 eine perspektivische Ansicht eines Buchsenkontaktes, ähnlich Fig. 1, mit 90° gewinkeltem Anschlussbereich;
• Fig. 3 eine perspektivische Ansicht auf einen halbzylinderförmigen erfindungsgemäßen Buchsenkontakt mit einem halbzylinderförmigen käfigartigen Buchsenkontaktteil bzw. halbzylinderförmigen Kontaktkäfig;
• Fig. 4 eine perspektivische Ansicht ähnlich der in Fig. 3 im gesteckten Zustand mit einem Steckerstift, der vollständig in den Buchsenkontakt eingesteckt ist;
• Fig. 5 eine Draufsicht auf die Steckverbindung gemäß Fig. 4 im nicht-gesteckten Zustand;
• Fig. 6 eine Draufsicht gemäß Fig. 4 im gesteckten Zustand;
• Fig. 7 einen Schnitt gemäß der Schnittlinie A-A aus Fig. 5;
• Fig. 8 einen Schnitt entlang der Schnittlinie B-B gemäß Fig. 6 im gesteckten Zustand;
• Fig. 9 eine perspektivische Ansicht eines zylinderförmigen Kontaktlamellengitters;
• Fig. 10 einen Schnitt durch einen Buchsenkontakt mit einem Kontaktlamellengitter gemäß Fig. 9 und einer umgebenden Schutzhülse sowie einem zylinderförmigen Stiftkontakt im nicht-gesteckten Zustand.

In the following the invention will be explained in more detail with reference to the description of two embodiments with reference to the drawings. Show:

• Fig. 1 a partially sectioned side view of a socket contact for an electrical connector having a contact area with a cage-like socket part, consisting of twisted slats with a protective cover pushed over it, which is known from the prior art;
• Fig. 2 a perspective view of a female contact, similar Fig. 1 , with 90 ° angled connection area;
• Fig. 3 a perspective view of a semi-cylindrical socket contact according to the invention with a semi-cylindrical cage-like socket contact part or semi-cylindrical contact cage;
• Fig. 4 a perspective view similar to in Fig. 3 in the inserted state with a plug pin which is fully inserted into the socket contact;
• Fig. 5 a plan view of the connector according to Fig. 4 in the unplugged state;
• Fig. 6 a plan view according to Fig. 4 in the inserted state;
• Fig. 7 a section according to the section line AA Fig. 5 ;
• Fig. 8 a section along the section line BB according to Fig. 6 in the inserted state;
• Fig. 9 a perspective view of a cylindrical contact blade grid;
• Fig. 10 a section through a socket contact with a Kontaktlamellengitter according to Fig. 9 and a surrounding protective sleeve and a cylindrical pin contact in the unplugged state.

In Fig. 1 is a connector consisting of a pin contact 1 and a socket contact 2 shown in the unplugged state. The pin contact 1 is shown as a circular cylindrical socket contact only with its plug-side end. Also shown is the plugging direction A, in which the pin contact 1 is to be inserted into the socket contact 2. The socket contact 2 has a contact cage 3 in its right part. In its left part, it forms a connection section 8. The contact cage 3 is formed as a cylindrical contact cage, comprising contact blades 4, which is formed obliquely over the cylindrical sleeve of the pressed from a sheet and rolled into a cylinder contact blade grid. The contact cage 3 forms the actual contact receiving space 5. The cylindrical contact cage comprises a first portion 7a formed as a gutter, followed by a portion which is formed as a lamella portion 6 and subsequently in its left region a second gutter 7b. The contact cage is thus made of a flat strip material and brought as a stamped and bent part in the form shown here. In the in Fig. 1 shown embodiment of a known contact element 2, designed as a female contact 2, a crimp connection is provided for connecting an electrical conductor, not shown. Therefore, the female contact 2 has in the connection area 8 two pairs of each upwardly bent connecting tabs, between which the electrical conductor, not shown, is inserted when connecting. The wider inner pair of lobes forms the crimp terminal 10 as a crimping contact, of which after crimping the stripped free end of the electrical conductor, not shown, is closed. The further left and thus outer pair of tabs or connecting tabs is bent around during the crimping process to the protective jacket of the electrical conductor, not shown, and thus serves as a clamping connection 11 which mechanically fixes the electrical conductor, not shown on the female contact 2 so that it Strain relief comes in this area and train on the electrical conductor, not shown, no train on the actual crimping of the crimp terminal 10 is exercised. The contact between socket contact and pin contact is made here in the region of the fin section 6 in the inserted state. This lamellar section 6 is located between the collar webs 7a and 7b in such a way that a multiplicity of obliquely running lamellae, that is to say contact lamellae 4, form the lamella section 6. The socket contact therefore has a plurality of web-like contact blades 4, which is twisted in the illustrated state of the socket contact 2 by a relative rotation of the two collar webs 7a and 7b against each other. Thus, a hyperbolic shape is achieved by the torsion and the surfaces of the contact blades are inflected inwardly into the cavity of the cylindrical socket contact element. This results in substantially in the middle of the contact blades a plurality of local contact points, which are when inserting the pin contact 1 in the socket contact 2 at its periphery create locally. Depending on the torsion angle, ie the relative angle of rotation of the first gutter 7a to the second gutter 7b, the position of the local contact points on the blade results due to a substantially centering constriction of this contact cage. In the case of a stronger angle of twist, the lamellar lattice, so to speak, constricts the pin contact 1 more strongly, specifically in the central position along a substantially circular line or a substantially circular small cylindrical section. Thus, there are local contact points between the socket contact 2 and the pin contact 1, when the connector is in its inserted position.

Fig. 2 shows a socket contact similar to the Fig. 1 with a connection region 8, which has a crimp connection 10 and a clamping connection 11 at its rearmost end for receiving also an electrical conductor, not shown. The socket contact shown here comprises a cylindrical contact cage inserted in a protective sleeve 12, which is arranged at an angle of 90 ° to the connection section 8. This arrangement allows a pin contact 1, not shown, to be inserted into the contact receiving space 5 perpendicular to the connecting direction of this socket contact 2.

In Fig. 3 a first embodiment of the invention is shown in a perspective view. In this embodiment, the socket contact 2 is formed in two parts and comprises a socket contact holder 13 with a substantially planar and rectangular base plate 14, which opens into a connection region 8, which is formed as a crimp terminal 10. The crimping terminal 10 has terminal lugs 10a and 10b, which are bent up laterally to form a receiving space for a conductor to be connected, which is connected between the terminal lugs 10a and 10b by a crimping connection. The female contact holder 13 is made as a stamped and bent part and shaped so that the crimp terminal 10 is connected in the substantially flat base plate 14 via a ramp 15 which extends slightly obliquely downwards. In the further course, the base plate 14 is formed substantially rectangular and has on its longitudinal sides 20,21 a plurality of retaining lugs 18, 19. Thus, the first longitudinal side edge 20 has first retaining lugs 18 and the second longitudinal side edge 21 via second retaining lugs 19, respectively are arranged in a fixed grid to each other. The set of first retaining lugs 18 is not located directly opposite the set of second retaining lugs 19, but is relative to Position of the second retaining lugs 19 offset to the rear. As a result, the first retaining lugs 18 or the row of the first retaining lugs 18 are not directly diametrically opposite the second row of retaining lugs 19. Furthermore, the first longitudinal side edge 20 has a retaining lug 23 which widened in its longitudinal extent by a multiple relative to the retaining lugs 18, 19 The retaining lugs 18 and 19 are formed in their geometry so that they correspond in thickness to the thickness of the base plate and have a substantially square or rectangular base. Thus, a plurality of retaining lugs project tooth-like away from the longitudinal side edges with a distance d from each other. The further retaining lug 23 at the first longitudinal side edge 20 of the base plate 14 also corresponds in its thickness to the thickness of the base plate 14, but in its width by a multiple wider formed, so that here is a holding section whose width determines the angle of inclination of the contact blades 4.

This retaining lug 23 is located near the front plug-side end 22 of the socket contact 2. The distance of the retaining lug 23 to the row of the first retaining lugs 18 corresponds to the distance of the retaining lugs 18 with each other and therefore corresponds to the distance d. Connected to the base plate 14 of the socket contact 2 is a semi-cylindrical contact cage 3 formed as a stamped bent part of a metal sheet such that the contact cage 3 has a plurality of substantially parallel, but obliquely extending contact blades 4 and a contact blade 4, in its course under a Angle to the remaining contact blades 4 runs. Each contact lamella on its own stretches an arc which essentially corresponds to the circumference of a half-cylinder or the circumference of a cylinder section. The contact cage 3 is connected to the base plate 14 via the retaining lugs 19, 18 with each other. This is accomplished by the distance between the contact blades to each other and in so far as the slots 26, which are located between the contact blades, are matched to the grid of the retaining lugs 18 and 19 and to the distance of the further retaining lug 23. The slats or contact blades 4 open in their transition region 24, 25 so in the gutter 7a, 7b, so that forms a holding slot 26 between each two contact blades 4, whose width corresponds to the width of the retaining lugs. Between the first contact blade 4 at the plug-in end and the second contact blade 4, spaced from the first, is located on the side of the first longitudinal side edge a gutter section corresponding in width to the width of the retaining lugs 23 and thus substantially widened to the width of the retaining lugs 18 and 19th is trained. As a result, the distance of the first contact blade 4 to second contact blade 4 on the second longitudinal side edge 21 is smaller compared to the distance between the two contact blades near the first longitudinal side edge 20. All other side facing away from the plug side slats are inclined and parallel and substantially the same distance from each other. In order to obtain sufficient stability, the contact fig 3 formed reinforced with its contact blades 4 in the region of the transition regions 24, 25 and the contact blades 4 have in this area a change in direction, which solidified as a result of a bending process, the material in these areas. The retaining lugs 18, 19 and 23 serve on the one hand to lock the contact cage 3, on the other hand also the position and orientation of the contact cage 3 such that the upper edge of the gutter is fixed in position by the lower edge of the retaining lugs 18, 19 and 23.

In Fig. 4 is a plugged connector pair, consisting of a pin contact 1 and a socket contact 2 according to Fig. 3 shown. The pin contact 1 is designed as a semi-cylindrical contact and comprises a plug-in portion 30 and a Kontaktierabschnitt 31, the insertion portion 30 is slightly bent downwards and deformed at its plug-side end down, so that the pin contact 1 easier to introduce into the contact receiving space 5 of the contact cage 3 leaves. The Kontaktierabschnitt 31 lies with its outer contour surface on the inside of all contact blades 4 in the fin section 6 thus on the entire contact zone.

In Fig. 5 is a plan view of the connector according to Fig. 4 shown. Good to see is the inclination of the contact blades for plug-in direction S. The first contact blade 4 of the contact cage 3 thus extends perpendicularly or at an angle of 90 ° to the direction of insertion S.

In Fig. 6 is the top view according to Fig. 5 however mapped in mated condition. The section line BB, which is indicated there, corresponds to the position of the section line AA Fig. 5 ,

In Fig. 7 is a section along the section line AA Fig. 5 shown. It can be seen clearly that the pin contact 1 in the position in the middle of the connector, ie at its highest point, beyond the position of the contact blades protrudes. Thus, the outer geometry of the pin contact 1 is formed enlarged with respect to the geometry of the Contact receiving space 5, which is formed by the contact blades 4. The collar webs 7a and 7b of the contact cage 3 protrude down beyond the bottom 17 of the base plate 14. The thickness of the base plate 14 corresponds approximately to twice the thickness of the contact cage 3 and thus the contact blades 4. The pin contact 1 has a material thickness which is opposite to the Material thickness of the contact blades is twice to three times.

The Fig. 8 shows the connector in its inserted position along the section line BB Fig. 6 , Here is the principle of operation of the contact clearly. The outer contour of the slotted pole contact 1 curved like a slat has stretched the contact blades 4 in their slat length, whereby the contact blade along the outer contour and thus the top of the pin contact 1 under tension applies.

The contact blades 4 therefore touch with their contact blade inner side surface 32 almost the entire outer contour of the pin contact 1, whereby a maximum contact bearing surface is achieved. The solid trained pin contact 1 undergoes no deformation, but it deforms only the contact cage 3 due to the length expansion of the contact blades 4 in the elastic region.

In Fig. 9 is a perspective view of an alternative embodiment of the invention shown as a cylindrical socket contact 2 and female contact cage 3 of a cylindrical socket contact 2 shown. The contact cage 3 is designed as a plug-in longitudinally slotted hollow body, which is additionally twisted in the circumferential direction and has a plurality of contact blades 4, which extend obliquely to the insertion direction from the front to the rear end. As a result, an inventive hyperbolic, cylindrical socket contact is formed. The contact blades 4 are connected to each other at their ends via collar webs 7a and 7b. The gutters 7a, 7b correspond in width about twice to three times the width of the contact blades. The width of a contact blade corresponds approximately to half the width of the distance between two contact blades. This results in slots 26 between the contact blades, which are about twice as wide in width as the width of a contact blade. 4

Furthermore, the collar webs 7a and 7b have at their ends on retaining lamellae 33, which are bent back and bent back against the longitudinal extension of the contact cage 3 back and after they have experienced a bend again substantially parallel to an outer jacket of the contact cage 3.

Fig. 10 shows a female contact 2 with a contact cage 3 according to Fig. 9 , and a substantially cylindrical pin 1. The retaining slats 33 engage in retaining lugs 18, 19 and are based with its outer contour on the inside of the protective sleeve 12 from. The sectional view clearly shows that in this embodiment, in addition, a constriction occurs in the center of the contact system due to the torsion of the first gutter 7a relative to the second gutter 7b, so that the contact blades 4 in the middle form a contact receiving space 5 with a smaller diameter than the contact receiving space 5 is in the area of the gutter 7a and 7b. The contact cage 3 is formed so that in the fin section 6, the diameter of the contact receiving space 5 in the middle is minimal and widens in the course towards the gutters 7a and 7b to a degree which corresponds approximately to the diameter of the contact cage in the region of the gutter.

The contact pin 1 has in the region of its Kontaktierabschnittes 31 such an outer geometry, which corresponds in diameter to the inner diameter of the contact cage 3 in the region of the gutter. This achieves that when inserting the pin contact 1 in the socket contact 2, the contact blades on the one hand, as in known connector systems rebound elastically, but at the same time in the middle of the fin section 6 but by the enlarged outer contour of the pin contact 1, which is matched to the geometry of Contact cage 3, in addition to experience a longitudinal extension of the contact blade in such a way that the contact blades 4 conform in an arc voltage on the outer contour of the pin contact 1 along the contact blade surface 32 on the Kontaktierabschnitt 31 over the entire surface.

List of Reference Numerals Electrical connector

1

pin contact

2

female contact

3

contact cage

4

Multilams

5

Contact receiving space

6

fin section

7a. 7b

gutters

7c

Gutter section

8th

terminal area

9

Transition section

10

Crimp

10a, 10b

terminal lugs

11

clamp connection

12

protective sleeve

13

Socket contact holders

14

baseplate

15

ramp

16

top

17

bottom

18

first retaining lugs

19

second retaining lugs

20

first longitudinal side edge

21

second longitudinal side edge

22

leading edge

23

retaining nose

24, 25

Transition area

26, 27

Slots or retaining slots

30

insertion section

31

contacting section

32

Multilams inner surface

33

holding slats

Claims (19)

An electrical connector comprising a cylindrical pin contact (1) and a socket contact (2) with a hyperbolic twisted contact cage (3) having a plurality of parallel twisted contact blades (4) having a substantially cylindrical contact receiving space (5) for receiving the cylindrical pin contact (1), the contact cage (3) tapering in diameter towards the center of the contact receiving space (5), the outer contour of the cylindrical pin contact (1) being enlarged in relation to the contact receiving space (5) in the slat region (6), the contact blades (4) during insertion of the cylindrical pin contact (1) in the socket contact (2) in addition to their radial rebound in addition a longitudinal extension and plastic deformation experienced so that the contact blades (4) characterized stretched across the outer contour of the cylindrical pin contact (1) be characterized in that the total area of de n contact lamellae (4) covered inner surface of the contact receiving space (5) spans 20% to 40% and wherein the area of the interstices, which are formed by the contact blades (4) covers 60% to 80%, wherein the contact cage (3) over the outside arranged collar webs (7a, 7b) has, which are twisted to each other and that the torsion angle of the hyperbolic twisted contact cage (32) is selected so that the diameter in the lamellar region (6) between 81% and 92% compared to the inner diameter in the region of the gutter 7a, 7b) is constricted, preferably 84% to 89%. An electrical connector comprising a pin contact (1) and a socket contact (2), comprising a contact cage (3) having a plurality of parallel contact blades (4) forming a contact receiving space (5) for receiving the pin contact (1) Pin contact (1) has an outer contour which is adapted in its plug geometry adapted to the inner contour of the contact receiving space (5) that the outer contour of the pin contact (1) the contact blades (4) when mating the connector due to the enlarged outer contour of the pin contact (1) deflects radially away from its position to the direction of insertion, the outer contour of the pin contact (1) is increased in such an opposite the contact receiving space (5) in the lamellar region (6) that the contact blades (4) in addition during their rebound experience a longitudinal extension and deformation so that the contact blades (4) are thereby stretched over the outer contour of the pin contact (1), characterized in that the socket contact (2) forms a contact cage (3) with a substantially semi-cylindrical contact receiving space (5). Electrical connector according to claim 2, characterized in that the contact blades (4) extend obliquely to the insertion direction (a) of the connector. An electrical connector according to claim 2 or 3; characterized in that the socket contact (2) has a base plate (14) which is connected to the contact cage (3) and forms together with this a semi-cylindrical contact receiving space. Electrical connector according to claim 4, characterized in that the base plate (14) has two longitudinal side edges (20, 21) which extend parallel to the insertion direction (A). Electrical connector according to claim 5, characterized in that the longitudinal side edges (20, 21) of the base plate (14) have retaining lugs (18, 19) with which the contact cage (3) is connected. Electrical connector according to claim 2 to 6, characterized in that the contact cage (3) between its contact blades (4) via adhesive portions (26, 27) which cooperate with the retaining lugs (18, 19). Electrical connector according to claim 5 to 7, characterized in that the base plate (14) has a retaining lug (23) which is located at a first longitudinal side edge (20) near the plug-side end of the socket contact (2). Electrical connector according to claim 8, characterized in that the retaining lug (23) is in its width by a multiple wider than the width of the retaining lugs (18, 19). Electrical connector according to claim 8 and 9, characterized in that the thickness of the retaining lugs (18, 19) corresponds to the thickness of the base plate (14). Electrical connector according to claim 2 to 10, characterized in that the retaining lugs (18) on the first longitudinal side edge (20) opposite the retaining lugs (19) on the second longitudinal side edge (21), caused by the at the first longitudinal side edge (20) widened retaining lug (23) are arranged offset diametrically to each other. Electrical connector according to claim 2 to 11, characterized in that at the plug-side end of the socket contact (2) a contact blade (4) transversely to the insertion direction substantially parallel to the front edge (22) of the socket contact (2). Electrical connector according to claim 2 to 12, characterized in that the further contact blades (4) are arranged at an angle between 20 and 50 ° obliquely to the insertion direction. Electrical connector according to claim 2 to 13, characterized in that the pin contact (1) is designed as a slipper contact and therefore has an arcuate outer contour in its cross section, which is formed enlarged to the inner contour of the contact receiving space (5) of the contact cage (3). Electrical connector according to claim 2 to 14, characterized in that the contact blades are connected to each other at their ends by a gutter (7a, 7b). Electrical connector according to claim 2 to 15, characterized in that the collar webs (7a, 7b) extend parallel to the longitudinal side edges (20. 21) of the base plate (14). Electrical connector according to claim 2 to 16, characterized in that the collar webs (7a, 7b) with the retaining lugs (18, 19, 23) cooperate. Electrical connector according to claim 2 to 17, characterized in that the collar webs abut with one of their surfaces respectively at the longitudinal side edges (20 or 21) of the base plate (14) and project beyond the underside (17) of the base plate (14). Electrical connector according to claim 2 to 18, characterized in that the lamellae are widened in their transition region (24, 25) to the collar webs (7a, 7b) with respect to their width in the region of the lamellar portion (6).

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