DE102005059684A1 - Electrical connector e.g. crimp connector, for conductors of flat cables e.g. flexible flat cable, has base section provided between cables so that conductor of cables on one side and conductor of cables on turned away side are contactable - Google Patents

Abstract

The connector (2) has a base section (20) from which outer contact sprockets (22) project onto two sides, where one of the sides is turned away from another side. The base section is provided between flat cables in such a manner that a conductor of flat cables on one side and the conductor of the flat cables on the turned away side of the base section are electrically contactable through respective outer contact sprockets.

Description

The The invention relates to an electrical connector, in particular a electrical penetrating or crimping connector, for electrical Connecting conductor tracks on top of each other lying flexible flat or foil flat cable.

through So-called crimp connections can be fast, efficient and reliable Crimp connections for electronic and electrical systems are manufactured, wherein a soldering of preformed connectors is not necessary. Such electrical Contact or connecting elements are z. B. in consumer electronics and used in the field of automotive electronics. Especially in the Automotive electronics are due to harsh environmental conditions, especially with regard to vibration resistance, Corrosion and temperature resistance high demands placed on the electrical connection elements.

Crimp connector are for the electrical contacting and fixing an electrical conductor usually They are designed with so-called crimp flanks and are often used for contacting Flexible Flat Cable (FFC), FLC (Flat Laminated Cable), ExFC (Extruded Flat Cable)) or for contacting of flexible printed circuit boards (FPC or FPCB (Flat (Printed) Circuits Boards)).

Crimp connector according to the state the technique for electrically connecting a conductor end of a Flat cable with a trace of a second flat cable point in each case a base portion on which contact teeth for Contacting the conductor track are provided. The contact teeth point a tapered cutting-like structure, by means of which they cut the flat cable during assembly or pierced. Subsequently, will the actual crimping performed, the contact teeth with the help of a suitable crimping tool be depressed in the direction of the flat cable.

The DE 103 20 535 A1 discloses an electrical connector for connecting conductor tracks of two superimposed flat cables, wherein for the preparation of the connection, at least one flat cable in the region of the conductor track to be contacted is electrically stripped. In the electrically contacting state, the stripped flat cable with its bare conductor is in contact with a knob-shaped form of the electrical connector, which electrically contacts the conductor of the directly overlying flat cable by means of cutting / crimping lugs.

Problematic in such an electrical connector is that at least one Flat cable in the later Contacting area must be stripped. This is time and therefore costly, since the tracks of a flat cable have a width of about 1 mm, what a correspondingly accurate work when stripping only one single trace required.

The US 4,749,368 discloses an electrical connector for connecting a trace of a flat cable to a trace of an overlying second flat cable. The electrical connector has on each side facing away from each other on a Piercingkranz, the Piercingkranz one side of a conductor of the first flat cable and the Piercingkranz the other side electrically contacts a conductor track of the second flat cable. Here, the electrical connector between the two flat cables is arranged.

adversely in such crimp connectors according to the state The technique is that at a mechanical stress of the crimp connection, in particular in case of swelling, electrical contact problems arise can. Such electrical contact problems also occur when the Crimp connection, such. B. in the automotive field, different Temperatures (at least about -40 up to max. approx. + 150 ° C) is exposed, which is additional mechanical stress the reliability the electrical contact still deteriorates.

task The invention is an improved electrical connector to disposal to deliver. In particular, should in the application of electrical Connector stripping the flat cable are avoided and be realized an electrical connector, the mechanical and / or thermal loads a permanent electrical contact a trace of a flat cable allows. In addition, the electric Connector cost-effective be in its production and in later use quickly and easily to be handled.

The object of the invention is achieved by an electrical connector, in particular a crimp connector, for mutually electrically connecting in each case a conductor of superposed flat cables, wherein from one side of a base portion of the electrical connector at least one outer contact tooth and preferably a Piercingkranz with at least one inner Contact tooth protrude, wherein by means of the external contact tooth at least a flat cable to the base portion is crimped, and an electrical connection of a single conductor of a flat cable with the base portion on the outer contact tooth and / or the optional inner contact tooth he follows.

There are according to the invention two variants of the electrical connector, wherein in both variants of Piercing ring can be omitted.

at the first variant of the electrical connector is two of each other opposite, diametrical sides of the base portion respectively at least an external contact tooth out, wherein the base portion between the flat cables is providable. The relevant trace of a flat cable is on the one and the relevant trace of a second flat cable is on the other side of the base portion through the respective outer contact tooth electrically contacted. In a crimped state of an external contact tooth lies an outer section of the external contact tooth on the flat cable so that the respective trace through the outer portion electrically contacted. This results with each on Base section provided outer contact tooth two electrical contacting options or areas with the conductor track.

are now how in a preferred embodiment the invention provided - on each side of the base portion provided with two outer contact teeth, so arise for each trace to be contacted by the electrical connector flat cable has four electrically conductive connections (two penetrating and two crimp contacts). Furthermore, the contact teeth serve the mechanical attachment of the flat cable to the base section.

In a preferred embodiment The invention is on both sides of the base portion respectively a piercing wreath provided. Each of the piercing wreaths points preferably has a plurality of internal contact teeth. By means of the Piercingkranzes or the internal contact teeth In addition, the respective interconnect becomes electrically and mechanically connected to the base section. Every inner contact tooth of a Piercing wreath increased while the electrical contacting options or area.

at the second variant of the electrical connector stands on one single side of the base portion, an outer contact tooth and an outer contact element produced, by means of the external contact tooth and / or the outer contact element an electrical connection to a respective conductor track of a flat cable he follows. In a crimped state of an external contact tooth contacted an outdoor section of the external contact tooth the trace of that flat cable, which from the base section farthest away and places the flat cables at the base section firmly. The outer contact element preferably remains upright and is preferably not crimpable.

In an embodiment According to the invention, the base portion has a piercing ring with at least an inner contact tooth, at least the trace of the the next flat cable lying on the base section via a penetration contact electrically contacted.

Prefers be two directly above each other by means of such an electrical connector lying flat cable in the area of crossing or parallel tracks electrically connected. In this case, the outer contact tooth and the outer contact element penetrate the respective trace of the flat cables and contact them electrically, in addition the upper portion of the outer contact tooth when crimping with its outside the re the base section farthest flat cable from the outside electrically contacted. Further, the inner contact tooth contacts at least the trace of lying directly on the base portion flat cable; However, it preferably contacts the two superimposed interconnects the two flat cables. As a result, for the fitting at the base section Flat cable at least three and for the remote flat cable also has at least three electrical Contacts with the base section provided. Every additional one internal contact tooth of the piercing ring and each additional external contact tooth or depending on the outer contact element elevated while the electrical contacting options or area.

By both variants of the invention it is superfluous, one or both of the electrically to be contacted flat cable in a corresponding Strip area. The electrical contact is inventively via a Variety of electrical contact areas realized by Penetration of the outer contact teeth and / or Contact elements, as well as the piercing wreath and a crimping of outer contact teeth obtained becomes. Especially by the large number of electrical contacts a single trace by means of the electrical connector at a mechanical and / or thermal stress of the electrical Connection ensures electrical contact.

According to the invention, several Tracks of parallel or crossed flat cables electrically connected at any point (middle or end) become. This allows cross connections, branches and parallel ports from flat cable to flat cable.

According to the invention, the electrical connector is simply made of sheet metal of a copper kneading lever punched out and bent, whereby it is inexpensive to manufacture. Furthermore, the electrical connector is easy to handle (it only needs to be positioned and crimped), so that electrical connections of traces of flat cables are inexpensive to produce.

Further is the electrical connector according to the invention configured such that even with a mispositioning of the Flat cable or the electrical connector still the desired electrical Connection is realized. This is on the one hand by the multiplicity of electrical contacting options for both Guaranteed flat cable and on the other hand by a corresponding flat and spatially extended distribution of the contact teeth or contact elements on Base section. It is preferred that the outer contact teeth parallel to each other offset to be crimped towards the base section.

Further preferred embodiments The invention results from the remaining dependent claims.

The Invention will be described below with reference to exemplary embodiments with reference closer to the drawing explained. In the drawing show:

1a a first variant of an electrical connector according to the invention after punching out of a metal sheet;

1b two side views rotated by 90 ° to each other of the ready-to-use electrical connector;

1c a top or bottom view of the electrical connector 1b ;

1d a three-dimensional view of the ready electrical connector;

1e the electrical connector according to the first variant with two flat cables attached to it before crimping;

1f the electrical connector 1e in the crimped state;

2a a second variant of the electrical connector according to the invention after punching out of a metal sheet;

2 B three mutually rotated side views of the ready electrical connector;

2c a plan view of the electrical connector 2 B ;

2d a three-dimensional view of the ready electrical connector; and

2e two electrical connectors according to the second variant with two flat cables strung thereon prior to crimping, for electrically contacting a single track of a flat cable with two tracks of the other flat cable.

The 1a to 1f as well as the 2a to 2e each show a variant of an electrical connector according to the invention 2 , wherein at an electrically conductive base portion 20 of the electrical connector 2 electrical contact devices are provided. If, in the following, one or both sides of the base section 20 the speech is so that is one of the two (2 variant of the invention) or are thus the two (1st variant of the invention) in terms of area largest pages of the base section 20 meant. The at the base section 20 provided "small pages" (eg in the 1b and 2 B to be seen as a strip-shaped surface (s)) are designated with edge or outer or peripheral edge.

The 1a shows a floor plan of two electrical connectors 2 that with a carrier 3 preferably formed materially in one piece. The respective electrical connector 2 Here, in a state after punching from a sheet, which preferably consists of a copper-Knet alloy shown. In this state, the electrical connector 2 extending flat provided and the base section 20 provided outer contact teeth 22 are not yet relative to the base section 20 bent upwards or downwards. The base section 20 is substantially rectangular, preferably constructed square, and it extend outwardly preferably four outer contact teeth 22 each with a crimping edge 221 ,

A wide end of the respective crimp flank 221 is materially integral with the base section 20 formed, wherein a longitudinal end portion of this common portion a corner portion of the base portion 20 forms. A longitudinal end opposite this end portion preferably ends at a slot 29 which is approximately centered on an edge of the Ba sisabschnitts 20 is trained. The slot 29 serves to, in the use state of the electrical connector 2 from the base section 20 protruding outer contact tooth 22 in a defined position during bending or crimping of the electrical connector 2 to position. This slot 29 is preferably another slot 29 opposite, with the connecting lines of the two directly opposite slots 29 preferably through a center of the base section 20 pass.

As in 1a to see are preferably four outer contact teeth 22 so at the base section 20 provided that in each case the longitudinal end portion (so) one with the base portion 20 common crimping edge 221 forms one of the four corner regions of the base section. This gives the floor plan of each electrical connector 2 about the look of a four-bladed propeller.

A single outer contact tooth 22 Its shape approximates the shape of an isosceles triangle, with the free end of the outer contact tooth 22 is rounded. Furthermore, the free end of the outer contact tooth 22 Beveled trained, which left in the 1b at a lower contact tooth 22 and right at an upper contact tooth 22 easy to recognize. This slope forms at the outer contact tooth 22 a cutting edge when crimping in a flat cable 1 cuts (see eg. 1e and 1f ).

1b represents the electrical connector 2 in a finished bent state. In this state, the electrical connector 2 ready for use and can be used to electrically contact tracks 10 or foil conductor 10 one or more flat or foil flat cables 1 be used. These are each from both sides of the base section 20 two outer contact teeth 22 substantially perpendicular to the base portion 2 off and aligned with the edge of the base section 20 , On each side are the two outer contact teeth 22 with their crimp flanks 221 substantially parallel to each other, with the two outer contact teeth 22 are preferably offset from each other and therefore they do not crimp to the center of the base portion 20 but outside the center parallel to an edge of the base section 20 be bent.

In a circumferential direction around the outer edge of the base portion 20 around are the outer contact teeth 22 of the electrical connector 2 mutually on each of the two sides of the base section 20 from. This gives the electrical connector 2 in a side view analogous to 1b - However, in a diagonal direction of the base section 20 - a regular H-shaped look. In a view perpendicular to a peripheral edge, as shown in the 1b is shown, either the lower or the upper part of the base section appears 20 U-shaped, whereas on the respective opposite side then the flat extension of the outer contact tooth 22 with his crimping edge 221 and the rounded free end can be seen.

Preferably centrally on the respective side of the base section 20 is a piercing wreath 21 intended. The piercing wreath 21 consists essentially of one or more internal contact teeth 21 that from the corresponding side of the base section 20 stand out and are preferably arranged in a circle. In this case, an edge of an inner contact tooth is preferred 21 partially circular shaped. Other forms of piercing wreath 21 , such as B. elliptical or a shape with corners are of course possible. Preferred are each side of the base section 20 two internal contact teeth 21 provided, which - as well as the external contact teeth 22 - Mutually protruding from the respective side and from a central region of the base section 20 what are in the 1d easy to recognize. The respective inner contact tooth 21 is preferably pyramidal or in cross-section isosceles triangular, with other forms as turn are applicable. In contrast to the outer contact teeth 22 are the inner contact teeth 21 symmetric with respect to the center of the base section 20 arranged and stand with their flanks directly opposite (s. 1c ).

1c shows the electrical connector 2 in a top or bottom view. Here is the approximately square plan of the electrical connector 2 or its base section 20 and each two cutting the outer 22 and the internal contact teeth 21 clearly visible. That of the outer contact teeth 22 defined square has a side length of about 1.4 to 1.7 mm. The parallel distance between two opposing teeth is preferably 1.57 mm.

In the 1d is the electrical connector according to the invention 2 shown in a three-dimensional perspective view, wherein the diametrically protruding from the two sides of the external contact teeth 22 and two internal contact teeth 21 are clearly visible.

The 1e and 1f show how by means of the electrical connector 2 a trace 10 a flat cable 1 with a conductor track 10 another flat cable 1 is electrically connected. However, the invention is not based on connecting two conductor tracks 10 limited, but it can according to the invention also more than two conductor tracks 10 electrically connected to each other. So it is z. B. possible, two flat cables 1 on one side and a flat cable 1 on the other side of the electrical connector 2 to arrange and thus three tracks 10 to contact each other electrically.

In the illustrated embodiment, however, two conductor tracks 10 two flat cables 1 electrically connected to each other. Here, first, the electrical connector 2 with the two outer contact teeth 22 one side through a flat cable 1 in the area of a conductor track 10 inserted so far that the base section 20 at the flat cable 1 is applied.

Here, the inner contact teeth contact 21 or the Piercingkranz 21 the conductor track 10 and preferably also the outer contact teeth 22 via a penetration contact the conductor track 10 in a base region of the crimping edge 221 , After that it will be on the other side of the electrical connector 2 a second flat cable 1 in the area of a conductor track 10 on the base section 20 of the electrical connector 2 plugged. In turn, contact the inner contact teeth 21 and the outer contact teeth 22 the conductor track 10 in the manner described above. Subsequently - what in 1f is shown - the outer contact teeth 22 on the respective flat cable 1 crimped, with the crimp flank 221 every external contact tooth 22 on the flat cable 1 is bent. Here, the cutting edge of each outer contact tooth cuts 22 the flat cable 1 in the area of the conductor track 10 and contacted here the respective track 10 , The arranged on each side outer contact teeth 22 are parallel to each other over on the flat cable 1 crimped. The crimped outer contact teeth 22 on one side of the base section 20 are arranged perpendicular to the lying on the other side. As a result, the conductor track 10 on one side of the electrical connector 2 ideally electrically contacted six times - twice by a penetration contact with the base portions of the crimp flanks 221 , twice through the inner contact teeth 21 and twice by cutting the on the flat cable 1 curved outer contact teeth 22 , This number of electrical contacts can be achieved by providing multiple internal contact teeth 21 or more external contact teeth 22 still be increased.

Furthermore, the crimping can also be done in a different order or in two steps; namely a first crimping before the installation of the second flat cable 1 , In addition, also a contact element 23 at the base section 20 be provided (see this, the second variant of the invention). Before, during or after crimping, the support section 3 from the electrical connector 2 separated.

The 2a to 2e show the second variant of the invention, wherein the corresponding electrical contact devices of the electrical connector according to the invention 2 on a single side of the base section 20 are provided. As a result, two or more directly superimposed flat cable 1 from the electrical connector 2 Coming from one side, electrically contacted, resulting in the 2e you can see. Of course it is also possible, only a single trace 10 with the electrical connector 2 to contact.

The 2a shows a plan view of the electrical connector 2 according to the second variant, wherein two obliquely opposite outer contact teeth 22 the first variant by preferably shorter outer contact elements 23 are replaced. The outer contact elements 23 are not aligned with their flanks, as in the first variant of the invention, parallel to the opposite and perpendicular to the adjacent peripheral edge, but lie with the respective edges substantially perpendicular to a diagonal of the base portion 20 , The outer contact elements are preferred 23 in a plan view of the electrical connector 2 (S. 2c However, offset laterally to this diagonal, so that a connection of a free end of an outer contact element 23 with the center of the base section 20 not with the opposite free end of the second outer contact element 23 flees. In comparison with the first variant of the invention are therefore two mutually parallel offset outer contact teeth 22 on the one hand shorter and on the other hand together by a certain angle from the original position of two outer contact teeth 22 twisted at the base section 20 intended.

When using the electrical connector as intended 2 become the outer contact elements 23 preferably not crimped or not bent, but remain upright and contact the superposed conductor tracks 10 all flat cables to be contacted 1 , Furthermore, the outer contact elements 23 so at the base section 20 arranged that with their flanks preferred in both surface directions of the side of the base portion 20 protrude and thus longitudinal and transverse portions of the corresponding side of the base portion 20 cover.

According to the invention, in the manufacture of the electrical connector 2 the outer contact teeth 22 and the outer contact elements 23 in the same direction with respect to the base section 20 bent up vertically. This gives the electrical connector 2 an approximately crown-shaped appearance, which in the 2 B and 2d easy to recognize. Also good to see is that the outer contact teeth 22 longer than the outer contact elements 23 are formed. However, this is optional, with the outer contact elements 23 as long as the outer contact teeth 22 can be trained. Furthermore, the outer contact elements 23 be arranged in the plan as in the first variant and beyond - also optional - be designed as long, which then according to the second variant of the invention in the same direction from the base section 20 protrude. This is depending on the space for the subsequent crimping of the outer contact teeth 22 more or less useful. Will leave a lot of room for the crimping of the external contact teeth 22 needed, or is the electrical connector 2 overall small, since z. B. the tracks 10 have a small width, so it makes sense, the outer contact elements 23 shorter so that the latter do not stand in the way of crimping and then remain upright. In addition, if the space available allows it, the outer contact element 23 as external contact tooth 22 be formed and is therefore crimpable.

As with the first variant is a Piercingkranz 21 provided, however, only on that side of Basisab section 20 is arranged, of which also the outer contact teeth 22 protrude. The piercing wreath 21 has internal contact teeth 21 pointing in the same direction as the outer contact teeth 22 and the outer contact elements 23 , Preferably, such a Piercingkranz 21 four inner contact teeth 21 on. Any other number is of course possible, as in the first variant of the invention.

Furthermore, the shape of the outer and inner contact teeth corresponds 22 . 21 as well as the shape of the piercing ring 21 preferably each of the first variant of the invention.

In 2c is a plan view of the electrical connector 2 shown, with four cutting edges (two of the outer contact teeth 22 and the outer contact elements 23 ) are recognizable. Furthermore, the cutting edges of the inner contact teeth 21 , In each case a connecting line of a center of a cutting edge of an external contact tooth 22 with a center of a cutting edge of an outer contact element 23 is parallel to an outer edge of the base section 20 , Two such lines are in the 2c shown in dashed lines. The distance between these two lines is preferably 1.15 to 1.35 mm. Particularly preferred are 1.27 mm. Such a parallel distance preferably have the two outer contact elements 23 on.

A three-dimensional representation of the second variant of the electrical connector 2 is in the 2d shown in which the from the base section 20 vertically protruding outer contact teeth 22 and outer contact elements 23 good to see. Furthermore, the inner contact teeth 21 also to be seen, preferably with a flank also perpendicular to the base portion 20 protrude.

In the 2e are two electrical connectors 2 before crimping to two flat cables 1 shown. Here are two flat cables 1 directly to each other, wherein the respective elec- rical connector 2 from one side, through the two flat cables 1 with his outer contact teeth 22 is inserted through it. Here, the inner contact teeth contact 21 at least that close to the base section 20 fitting flat cables 1 in the area of a conductor track 10 , Preferably, the inner contact teeth penetrate 21 but also at least in the track 10 of the second flat cable 1 one. Furthermore, the two outer contact elements penetrate 23 both relevant tracks 10 the two flat cables 1 , In addition, preferably also contact the crimp flanks 221 the outer contact teeth 22 the relevant tracks 10 (in the 2e not shown). The at the base section 20 directly connected track 10 is hereby preferably eight times (four inner contact teeth 21 , two outer contact elements 23 and two outer contact teeth 22 ) contacted electrically. The overlying track 10 is at least four times (two outer contact teeth 22 and two outer contact elements 23 ) electrically contacted before crimping. After crimping, the outer contact teeth cut 22 the top flat cable and contact this electrically in addition twice.

Furthermore the second variant of the invention is constructed like the first variant.

In both variants of the invention, the Piercingkranz act 21 and the outer contact teeth 22 in such a way that in the crimped state the flat cable 1 securely clamp between them and the crimp connection sufficient elasticity or spring force on the flat cable 1 exercise so that it is electrically contacted even under mechanical / thermal stress.

Furthermore, the copper-copper alloy used is preferably harder than the material of the conductor track 10 a flat cable 1 In preferred embodiments of the invention, the thickness of an external contact tooth 22 or an outer con tact element 23 in the range of the thickness of a conductor track 10 lies.

1

Flat cable, Film flat cable (FFC, FLC, ExFC, FPC, FPCB)

10

Trace foil conductor

12

electrical insulation

2

electrical Connectors, crimp connectors, penetration connectors

20

Base portion base region

21

Piercing ring, inner contact tooth

22

external contact tooth (long)

221

Crimp edge

23

outer contact element, short contact tooth, can crimp edge exhibit

29

slot

3

Carrier, beam section

Claims (12)

Electrical connector, in particular crimp connectors ( 2 ), for the mutual electrical connection of a respective conductor track ( 10 ) of stacked flat cables ( 1 ), with a base section ( 20 ), from which on each of two sides facing away from each other at least one outer contact tooth ( 22 ) and the base section ( 20 ) between the flat cables ( 1 ) it can be foreseen that a conductor track ( 10 ) of a flat cable ( 1 ) on one side and a conductor track ( 10 ) of a second flat cable ( 1 ) on the opposite side of the base section ( 20 ) through the respective outer contact tooth ( 22 ) is electrically contactable. An electrical connector according to claim 1, wherein at the peripheral edge of the base portion ( 20 ) in one direction encircling the outer contact teeth ( 22 ) of the electrical connector ( 2 ) alternately from the respective side of the base section ( 20 ) stand out. Electrical connector, in particular crimp connectors ( 2 ), for the mutual electrical connection of a respective conductor track ( 10 ) of stacked flat cables ( 1 ), with a base section ( 20 ), on which on a single side at least one crimpable outer contact tooth ( 22 ) and at least one rigid outer contact element ( 23 ), and by means of the external contact tooth ( 22 ) the directly superposed flat cables ( 1 ) at the base section ( 20 ), wherein an electrical connection of the conductor tracks ( 10 ) of the flat cables ( 1 ) over the external contact tooth ( 22 ) and / or the outer contact element ( 23 ) he follows. An electrical connector according to claim 3, wherein at the peripheral edge of the base portion ( 20 ) of the electrical connector ( 2 ) in one direction, the outer contact teeth ( 22 ) with the outer contact elements ( 23 ) alternate. Electrical connector according to one of claims 1 to 4, wherein the base portion ( 20 ) of the electrical connector ( 2 ) prefers centrally a Piercingkranz ( 21 ) having. An electrical connector according to any one of claims 1 to 5, wherein in crimping the electrical connector ( 2 ) the external contact tooth ( 22 ) the flat cable (s) ( 1 ) between itself and the base section ( 20 ), and the outside of the outer contact tooth ( 22 ) on the base section ( 20 ) overhead track ( 10 ) contacted electrically. An electrical connector according to any one of claims 1 to 6, wherein on one or both sides of the base portion ( 20 ) two external contact teeth ( 22 ) and / or two outer contact elements ( 23 ) are provided. Electrical connector according to one of claims 1 to 6, wherein the external contact teeth ( 22 ) and / or the outer contact elements ( 23 ) one side of the base section ( 20 ) with their respective flanks parallel to each other and offset from each other. An electrical connector according to any one of claims 1 to 8, wherein the respective ones of the outer edges of the base portion ( 20 ) and the outside of all external contact teeth ( 22 ) of the electrical connector ( 2 ) in the projection onto a base section ( 20 ) parallel plane essentially define a square. Electrical connector according to one of claims 1 to 9, wherein a flank of an outer contact element ( 23 ) at the base section ( 20 ) is provided that this is not at a right angle to all edges of the outer contact teeth ( 22 ) is positioned. Electrical connector according to one of claims 1 to 10, wherein the external contact teeth ( 22 ) not to the center of the base section ( 20 ), but preferably parallel or perpendicular to an edge of the base portion ( 20 ) are crimpable. Electrical connector according to one of claims 1 to 10, wherein the external contact teeth ( 22 ) higher from the base section ( 20 ) protrude further than the outer contact elements ( 23 ).