DE102007031619B4 - Electrical connector - Google Patents

Abstract

Electrical connector, comprising a pin contact (1) and a socket contact (2), with a contact cage (3) with a plurality of parallel contact blades (4) which form a contact receiving space (5) for receiving the pin contact (1), wherein the The pin contact (1) has an outer contour whose plugging geometry is adapted to the inner contour of the contact receiving space (5) so that the outer contour of the pin contact (1) touches the contact lamellae (4) when the connector is plugged together due to the enlarged outer contour of the pin contact (1) deflects radially away from its position to the plug-in direction, the outer contour of the pin contact (1) is so enlarged compared to the contact receiving space (5) in the lamellae area (6) that the contact lamellae (4) also experience a length extension and deformation when they spring out so that the Contact lamellas (4) are thereby stretched flat over the outer contour of the pin contact (1), thereby marked shows that the socket contact (2) forms a contact cage (3) with an essentially semi-cylindrical contact receiving space (5).

Description

The invention relates to an electrical connector, comprising a socket contact and a plug pin according to the preamble of patent 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 formed like a cage, d. H. 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, d. H. is designed as a hollow longitudinally slotted in the insertion direction, which is preferably additionally twisted in the circumferential direction. 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 expansion of the contact wires can only be within a certain range, namely the elastic region, of such wire materials.

A disadvantage of contact wires in particular lies in the fact that a point to maximally linear contact with the mating connector can 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 is in the present form, as clearly visible in the figure, to the problem that the contact blades are arranged only point or linear contactable, so that the contact arrangement known in the art is not in satisfactorily with a contact pin surface comes to the contact system.

In the WO 00/70713 Another cylindrical bush member is disclosed, which is formed as a cylindrical hyperbolic contact socket with a surrounding jacket which supports the contact area.

Further, there is disclosed a method of making such a connector receptacle by punching, bending and twisting a contact lamination sheet in the circumferential direction and attaching a contact sleeve to the contact bushing.

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 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 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 5A to 5D is, the punctiform contacting of a contact pin with the contact blades. When using a rectangular pin, as in 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 pin it also comes to the point-like contact in the area of the contact blades. Such contact systems, which are produced by a hyperbolically twisted punched cage grid, suffer from the disadvantage that they form a contact receiving space by the constriction, caused by the torsion of the cage grid, which allows punctiform or partial contact with a pin contact in a small area around the Contact contact point around.

Common connector systems have in common that they have only insufficient contact surfaces, d. H. 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 insertion and removal forces. It would be large spring travel and thin materials necessary to produce optimum spring characteristics of the contact system, but 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 the contact blades area 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 conjunction with different contact sockets in each case generate more or less sufficient contact pressure and therefore the current transmission or the current carrying capacity of such a connector system is determined by the tolerances and tolerances of the individual parts.

It is therefore a further object of the present invention to provide a connector system which also solves the problem of tolerance issues, i. H. 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 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 when plugging the pin into the lamellar cage receptacle of the socket contact three processes occur in parallel.

On the one hand, a spring action is generated from the elasticity of the contact blade essentially perpendicular to the plug-in direction, that is to say directed radially outward, represents an elastic deformation.

On the other hand, the invention by the simultaneous elastic and plastic stretching of the contact blades, which provide crucial for the operation of the connector according to the invention contribute to achieve a maximum contact surface of the contact system. This is generated by the fact that in addition to the rebound a defined longitudinal extension of the contact blade is forced in the insertion 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 location, 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 the consequent transition of the punctiform in the linear system and when completely plugged into a sheet-like system.

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.

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

1 Connector known in the art;

2 a socket contact known from the prior art,

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;

4 a perspective view similar to in 3 in the inserted state with a plug pin which is fully inserted into the socket contact;

5 a plan view of the connector according to 4 in the unplugged state;

6 a plan view according to 4 in the inserted state;

7 a section according to the section line AA 5 ;

8th a section along the section line BB according to 6 in the inserted state;

9 a cylindrical contact lamellar grid of the prior art;

10 a section through a socket contact with a Kontaktlamellengitter, which is known from the prior art.

In 1 is a known 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 plug-in direction A, in which the pin contact 1 in the socket contact 2 is to introduce.

The socket contact 2 has a contact cage in its right part 3 on. In his left part he forms a connection section 8th , The contact cage 3 is formed as a cylindrical contact cage, comprising contact blades 4 , which is formed obliquely on the cylindrical sleeve of the stamped from a sheet and rolled into a cylinder contact lamellar grid. The contact cage 3 forms the actual contact receiving space 5 , The cylindrical contact cage comprises a first section 7a , formed as a gutter, followed by a section that as a fin section 6 is formed and then in his left area 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 1 shown embodiment of a known contact element 2 , designed as a socket contact 2 , Crimp connection is provided for connecting an electrical conductor, not shown. Therefore, the socket contact has 2 in the connection area 8th two pairs of upwardly bent connecting tabs, between which the electrical conductor, not shown, is inserted when connecting.

The wider inner pair of lugs forms the crimp connection 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 around the protective jacket of the electrical conductor, not shown, and thus serves as a clamping connection 11 , which the electrical conductor, not shown, at the socket contact 2 mechanically sets so that it comes to strain relief in this area and train on the electrical conductor, not shown, no train on the actual crimping of the crimp 10 is exercised. The contact between socket contact and pin contact is here in the region of the fin section 6 made in mated condition. This slat section 6 is located between the gutters 7a and 7b in such a way that a multiplicity of obliquely running lamellas, in other words contact lamellae 4 , the lamellar section 6 form. The socket contact therefore has a plurality of web-like contact blades 4 , in the illustrated state of the socket contact 2 by a relative twisting of the two gutters 7a and 7b is twisted 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 occur when inserting the pin contact 1 in the socket contact 2 Create locally at its circumference. Depending on the torsion angle, ie the relative angle of rotation of the first gutter 7a to the second gutter 7b , the location of the local contact points on the lamella is due to a substantially midway constriction of this contact cage. If the angle of rotation is stronger, the lamellar grid constricts the pin contact, so to speak 1 stronger in the central position along a substantially circular line or a substantially circular small cylinder portion.

Thus, there are local contact points between the socket contact 2 and the pin contact 1 when the connector is in its fitted position.

2 shows a known from the prior art socket contact similar to the 1 with a connection area 8th , which has a crimp connection 10 and a clamp connection 11 at its rearmost end also has to accommodate an electrical conductor, not shown. The female contact shown here comprises a cylindrical contact cage in a protective sleeve 12 introduced, which at an angle of 90 ° to the connection section 8th is arranged. This arrangement allows a pin contact, not shown 1 in the contact reception room 5 perpendicular to the direction of connection of this socket contact 2 insert.

In 3 a first embodiment of the invention is shown in a perspective view. In this embodiment, the socket contact is 2 formed in two parts and includes a socket contact holder 13 with a substantially flat and rectangular base plate 14 in a connection area 8th opens, as a crimp connection 10 is trained. The crimp connection 10 has connecting lugs 10a and 10b , which are bent up to the side so that they form a receiving space for a conductor to be connected, between the connecting lugs 10a and 10b is connected by a crimp or clamp connection. The socket contact holder 13 is manufactured as a stamped and bent part and shaped so that the crimp connection 10 in the substantially flat base plate 14 over a ramp 15 , which is slightly sloping down, connected. In the further course is the base plate 14 formed substantially rectangular and has on its long sides 20 . 21 over a variety of retaining lugs 18 . 19 , Thus, the first longitudinal side edge has 20 over first retaining lugs 18 and the second longitudinal side edge 21 via second retaining lugs 19 , which are each arranged in a fixed grid to each other. The set of first holding lugs 18 is not directly opposite the set of second retaining lugs 19 but is relative to the position of the second retaining lugs 19 moved backwards. As a result, the first retaining lugs are 18 or the series of the first retaining lugs 18 not immediately diametrically opposite the second row of retaining lugs 19 , Furthermore, the first longitudinal side edge has 20 about a holding nose 23 , opposite the retaining lugs 18 . 19 is spread in its longitudinal extent many times over.

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 protrude in a tooth-like manner at a distance d from one another laterally away from the longitudinal side edges. The further retaining nose 23 at the first longitudinal side edge 20 the base plate 14 , Also corresponds in thickness to the thickness of the base plate 14 , However, formed in their width many times wider, so that here is a holding section whose width is the angle of inclination of the contact blades 4 certainly.

This holding nose 23 is located near the front plug-in end 22 of the socket contact 2 , The distance of the retaining lug 23 to the series of first holding lugs 18 corresponds to the distance between the retaining lugs 18 with each other and therefore corresponds to the distance d. With the base plate 14 of the socket contact 2 connected is a semi-cylindrical contact cage 3 formed as a stamped bent part of a metal sheet such that the contact cage 3 over a plurality of substantially parallel, but obliquely extending contact blades 4 features as well as a contact lamella 4 , which in their course at an 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 with the base plate 14 over the retaining lugs 19 . 18 connected with each other. This is accomplished by the distance of the contact blades to each other and thus the slots 26 , which are located between the contact blades, on the grid, the retaining lugs 18 and 19 as well as on the distance of the further retaining nose 23 are coordinated. The slats or contact blades 4 flow into their transition area 24 . 25 so in the gutter 7a . 7b , so that between each two contact blades 4 a holding slot 26 forms, whose width corresponds to the width of the retaining lugs. Between the first contact lamella 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 of a gutter section, which in its width to the width of the retaining lugs 23 corresponds and thus significantly widened to the width of the retaining lugs 18 and 19 is trained. As a result, the distance of the first contact blade 4 to the second contact blade 4 on the second longitudinal side edge 21 reduced compared to the distance between the two contact blades near the first longitudinal side edge 20 ,

All other fins facing away from the mating side run obliquely and parallel and substantially equidistant from one another. To get enough stability, the contact cage 3 with its contact blades 4 in the area of transition areas 24 . 25 reinforced trained and the contact blades 4 In this area have 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 on the one hand serve 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 in its position by the lower edge of the retaining lugs 18 . 19 and 23 is determined.

In 4 is a plugged connector pair, consisting of a pin contact 1 and a socket contact 2 according to 3 shown. The pin contact 1 is formed as a semi-cylindrical contact and includes a male portion 30 and a contact portion 31 , The insertion section 30 is slightly bent down and deformed at its plug-side end down, so that the pin contact 1 easier in the contact receiving space 5 of the contact cage 3 can be introduced. The contacting section 31 lies with its outer contour flat on the inside of all contact blades 4 in the slat section 6 thus over the entire contact zone.

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

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

In 7 is a section along the section line AA 5 shown. It can be clearly seen that the pin contact 1 in the position in the middle of the connector, so at its highest point, beyond the position of the contact blades protrudes.

Thus, the outer geometry of the pin contact 1 enlarged trained with respect to the geometry of the contact receiving space 5 passing through the contact blades 4 is formed. The gutter 7a and 7b of the contact cage 3 protrude down over the bottom 17 the base plate 14 out. The base plate 14 sticks out with its retaining lugs 18 and 19 each over the outer contour of the contact cage 3 sideways out. 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 that is twice to three times the thickness of the contact blades.

The 8th shows the connector in its inserted position along the section line BB 6 , Here is the principle of operation of the contact clearly. The outer contour of the slotted pin contact bent 1 has the contact blades 4 stretched in their lamella length, whereby the contact blade along the outer contour and thus the top of the pin contact 1 energized.

The contact blades 4 therefore contact with their contact lamella inside 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 experiences no deformation, but it deforms only the contact cage 3 due to the length extension of the contact blades 4 in the elastic range.

In 9 FIG. 12 is a perspective view of a prior art cylindrical socket contact. FIG 2 or female contact cage 3 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 a plurality of contact blades 4 has, which run obliquely to the direction of insertion from the front to the rear end. As a result, a hyperbolic, cylindrical socket contact is formed. The contact blades 4 are each at their ends via guttering 7a and 7b connected with each other. The gutter 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 frets have 7a and 7b at their ends via retaining slats 33 , which are so bent and against the longitudinal extension of the contact cage 3 bent back to the rear and after having undergone a bend, again substantially parallel to an outer jacket of the contact cage 3 run.

10 shows a known from the prior art socket contact 2 with a contact cage 3 according to 9 , as well as a substantially cylindrical pin 1 , The retaining slats 33 grab holdasen 18 . 19 and support with their outer contour on the inside of the protective sleeve 12 from. The sectional view clearly shows that in addition a constriction in the middle of the contact system due to the torsion of the first gutter 7a opposite the second gutter 7b done so that the contact blades 4 in the middle a contact reception room 5 form with a smaller diameter than the contact receiving space 5 in the area of the gutter 7a and 7b is. The contact cage 3 is designed so that in the fin section 6 the diameter of the contact receiving space 5 is minimal in the middle and in the course towards the frets 7a and 7b widened to a dimension which corresponds approximately to the diameter of the contact cage in the region of the gutter.

Claims (18)

An electrical connector comprising a pin contact ( 1 ) and a socket contact ( 2 ), with a contact cage ( 3 ) with a plurality of parallel contact blades ( 4 ), which has a contact receiving space ( 5 ) for receiving the pin contact ( 1 ), wherein the pin contact ( 1 ) has an outer contour, which in its plug-in geometry adapted to the inner contour of the contact receiving space ( 5 ) is formed so that the outer contour of the pin contact ( 1 ) the contact blades ( 4 ) during mating of the connector due to the enlarged outer contour of the pin contact ( 1 ) deflects from its position radially away from the plug-in direction, the outer contour of the pin contact ( 1 ) is so enlarged relative to the contact receiving space ( 5 ) in the lamella area ( 6 ) that the contact blades ( 4 ) experienced during their rebound in addition a longitudinal extension and deformation so that the contact blades ( 4 ) thereby flat over the outer contour of the pin contact ( 1 ), characterized in that the socket contact ( 2 ) a contact cage ( 3 ) having a substantially semi-cylindrical contact receiving space ( 5 ). Electrical connector according to claim 1, characterized in that the contact blades ( 4 ) obliquely to the insertion direction (a) of the connector. Electrical connector according to claim 1 or 2, characterized in that the socket contact ( 2 ) via a base plate ( 14 ) with the contact cage ( 3 ) and forms together with this the semi-cylindrical contact receiving space. Electrical connector according to claim 3, characterized in that the base plate ( 14 ) over two longitudinal side edges ( 20 . 21 ), which run parallel to the insertion direction (A). Electrical connector according to claim 4, characterized in that the longitudinal side edges ( 20 . 21 ) of the base plate ( 14 ) via retaining lugs ( 18 . 19 ), with which the contact cage ( 3 ) connected is. Electrical connector according to claim 5, characterized in that the contact cage ( 3 ) between its contact blades ( 4 ) via holding sections ( 26 . 27 ), which with the retaining lugs ( 18 . 19 ) interact. Electrical connector according to claim 4 to 6, characterized in that the base plate ( 14 ) via a retaining lug ( 23 ) located on a first longitudinal side edge ( 20 ) near the plug-in end of the socket contact ( 2 ) is located. Electrical connector according to claim 7, characterized in that the retaining lug ( 23 ) in its width is many times wider than the width of the retaining lugs ( 18 . 19 ). Electrical connector according to claim 8, characterized in that the thickness of the retaining lugs ( 18 . 19 ) the thickness of the base plate ( 14 ) corresponds. Electrical connector according to one of claims 7 to 9, characterized in that the retaining lugs ( 18 ) on the first longitudinal side edge ( 20 ) against the retaining lugs ( 19 ) on the second longitudinal side edge ( 21 ), due to the at the first longitudinal side edge ( 20 ) broadened retaining nose ( 23 ) are arranged offset diametrically to each other. Electrical connector according to one of the preceding claims, 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 leading edge ( 22 ) of the socket contact ( 2 ) runs. Electrical connector according to claim 11, 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 one of the preceding claims, characterized in that the pin contact ( 1 ) is formed as a slipper contact and therefore has an arcuate outer contour in its cross section, which corresponds to the inner contour of the contact receiving space ( 5 ) of the contact cage ( 3 ) is formed enlarged. Electrical connector according to one of the preceding claims, characterized in that the contact blades ( 4 ) at their ends by a gutter ( 7a . 7b ) are interconnected. Electrical connector according to claim 14, characterized in that the collar webs ( 7a . 7b ) parallel to the longitudinal side edges ( 20 . 21 ) of the base plate ( 14 ). Electrical connector according to claim 14 or 15, characterized in that the gutter webs ( 7a . 7b ) with the retaining lugs ( 18 . 19 . 23 ) interact. Electrical connector according to one of claims 14 to 16, characterized in that the collar webs with one of their surfaces in each case at the longitudinal side edges ( 20 respectively. 21 ) of the base plate ( 14 ) and over the underside ( 17 ) of the base plate ( 14 ) protrude. Electrical connector according to one of claims 14 to 17, characterized in that the contact blades ( 4 ) in its transitional area ( 24 . 25 ) to the frets ( 7a . 7b ) are widened.

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