Connectors

Abstract

Electrical connector (1) for contacting an electrical conductor (5) designed as a flat ribbon cable with more than one adjacent conductor (5', 5'', 5'''') with a circuit board (4) consisting of an insulating body (2) and more than one electrical contact element (3, 3', 3''), wherein the insulating body (2) has a cavity (20, 20', 20'') for receiving one of the contact elements (3, 3', 3''), which forms a first part designed as a plug-in area (21) for plugging onto the card edge of the circuit board (4) and a second part designed as a contact area (22) in the insulating body (2), wherein the contact elements (3, 3', 3'') have a first contact side (31) and a second contact side (32, 32', 32''), wherein the first contact side (31) of the contact elements (3, 3', 3'') is suitable for contacting the circuit board (4) and the second contact side (32, 32', 32'') is suitable for insulation-penetrating contacting of the electrical conductor (5), wherein the contact elements (3, 3', 3'') are arranged in the cavities (20, 20', 20'') of the insulating body (2) such that the first contact side (31) is arranged in the plug-in area (21) and the second contact side (32, 32', 32'') is arranged in the contact area (22), wherein the first contact side (31) of the contact elements (3, 3', 3'') is flat and fork-shaped and forms two contact arms (33, 33'), wherein the contact arms (33, 33') form two opposing contact points (34, 34'), wherein the contact arms (33, 33') of the first contact side (31) of the contact elements (3, 3', 3'') are formed in a mirror-symmetrical manner with respect to the plane of the circuit board (4) as a plane of symmetry, wherein the second contact side (32, 32', 32'') at least one of the contact elements (3, 3', 3'') is arranged laterally to this plane of symmetry of the first contact side (31).

Description

[0001] The invention relates to a connector for contacting an electrical conductor with a printed circuit board, according to the features of independent claim 1.

[0002] Connectors are used to disconnect and connect wires, particularly those designed to conduct electrical current. Such connectors typically consist of an insulating body containing contact elements. These insulating bodies are designed with a connection side for electrical wires and a mating side for coupling with an electrical component or another connector.

[0003] The present invention relates to connectors designed to connect an electrical conductor to a printed circuit board (PCB). These special connectors are required to make electrically conductive contact between a conductor and a PCB. The contact elements incorporated in the connector ensure the electrical connection of each conductor of the electrical conductor to at least one, preferably two, electrical contact tracks on the PCB.

[0004] Such connectors currently have several significant disadvantages. Connectors of the described type are primarily very cumbersome to assemble. The cable to be connected must be prepared for contact with the connector. This usually requires exposing the insulated conductors. These conductors must then be individually connected to the contact elements of the connector to ensure an electrically conductive connection. After connecting the conductors to the contact elements, they must be inserted into the insulating body and locked into place. The components of the connector that enable contact between an electrical conductor and the connector are generally very complex.

[0005] German patent application DE 20 2011 101 050 U1 discloses a contact-type plug-in terminal and connectors for these plug-in terminals. The plug-in terminal has a U-shape, which allows insertion into a cable from both sides. The corresponding connector is suitable for accommodating several plug-in terminals.

[0006] US patent 2008 / 0 305 651 A1 discloses an electrical cable connector for connecting a multi-conductor power or signal cable to a card edge interface of a printed circuit board. Within the connector, several contact elements with prongs and ridges are arranged for contacting a cable.

[0007] Another disadvantage of the currently known solution is that such connectors usually require a mating connector to be connected to a printed circuit board. The mating connector must be soldered or crimped onto the circuit board at the appropriate location. After the assembly described above, the connector can then be connected to the mating connector. This is an additional component that must be manufactured and assembled, and it also increases the cost of such a connector.

[0008] Furthermore, using an additional connector makes the connection very large. The extra mating connector requires additional space. Especially in very small assemblies, this can lead to problems with space, for example, for cable routing. Task

[0009] The invention is therefore based on the objective of solving or reducing at least one of the above-mentioned problems, in particular providing a connector that has very small dimensions and can be contacted with a circuit board without a mating connector.

[0010] To solve the problem, a connector according to the features of claim 1 is proposed. Description

[0011] Advantageous embodiments of the invention are specified in the dependent claims.

[0012] The invention relates to an electrical connector for electrically contacting an electrical conductor, designed as a flat ribbon cable with more than one adjacent conductor, with an electrical circuit board, a so-called PCB (Printed Circuit Board). Such connectors are required to contact the signal and / or current-carrying conductors of the electrical conductor with contact points on the PCB.

[0013] The connector essentially consists of an insulating housing formed by an insulating body. The insulating body has several cavities designed to accommodate electrical contact elements. These contact elements are intended for the direct connection of the individual conductor wires to the contact points of the PCB.

[0014] The insulating body, consisting of a T-shaped component extruded into space, forms a plug-in side designed for insertion onto the edge of a PCB, and a contact side suitable for making contact with the electrical conductor. The plug-in side has a slot into which the PCB can be inserted.

[0015] In a preferred embodiment, locking features are provided on the inside of the slot, enabling the insulating body to be locked to the PCB. These locking features are wedge-shaped or dome-shaped. They can engage in holes or similar recesses in the PCB, thus positioning the connector on the PCB and preventing it from slipping.

[0016] The PCB is suitably equipped with through holes, blind holes, or rectangular, triangular, or other shaped recesses. The locking mechanisms of the connector can engage in these recesses.

[0017] In a preferred embodiment, the contact side of the insulating body has at least one cable receiving channel. This cable receiving channel, designed as a bore, is intended to receive an insulated strand or core of the electrical conductor. Preferably, one cable receiving channel is provided for each core of the electrical conductor.

[0018] In a flat ribbon cable, all the conductors are arranged side by side. The common insulation of the conductors results in a flat cable, a so-called flat ribbon cable.

[0019] Due to the special arrangement of the cable channels next to each other, so that they overlap in some areas, the ribbon cable can be inserted into the cable channels in such a way that exactly one conductor of the ribbon cable is received in each channel.

[0020] The cavities provided in the insulating body extend expediently to both the plug-in and contact sides of the insulating body. On the plug-in side, each cavity forms a plug-in area, and on the contact side, each cavity forms a contact area.

[0021] The insertion areas of the cavities are arranged so that they preferably intersect the slot for receiving the PCB at a right angle. This ensures that a PCB inserted into the slot penetrates all insertion areas evenly.

[0022] The contact areas of the cavities are irregularly arranged, unlike the plug-in areas. The contact areas of the various cavities are designed so that each contact area intersects a cable channel for the conductors.

[0023] In a preferred embodiment, the cavities are designed such that two cavities are always identical but mirror images of each other. Thus, for example, with four cavities, the two outer ones would be mirror images of each other and intersect the uppermost and lowermost cable receiving channels, respectively, while the two inner cavities would intersect the two middle cable receiving channels.

[0024] The design of two identical, mirrored cavities serves to reduce the number of contact elements that need to be provided to be accommodated in the cavities.

[0025] The contact elements intended for insertion into the cavities are preferably stamped from sheet metal. These have two contact sides: a first contact side located in the insertion area of ​​the cavity, and a second contact side also located in the contact area of ​​the cavity.

[0026] The first contact side of the contact element is essentially fork-shaped, formed by two contact arms. Each contact arm forms a contact point. Furthermore, the contact arms are arranged in the contact area of ​​the cavity such that the slot passes between the contact arms, and only the contact points of the contact arms protrude into the slot.

[0027] The second contact side of the contact element is designed for insulation-penetrating contact. This can be achieved either by a so-called piercing contact or, in a preferred embodiment, by an insulation displacement connector. The second contact side is arranged in the contact area of ​​the cavity such that it projects into the cable receiving channel, which intersects the contact area. This allows for insulation-penetrating contact with a conductor located in the cable receiving channel.

[0028] Advantageously, the contact elements are available in various designs. These differ in the position of the second contact surface relative to the first. This depends on the specific cavity into which each contact element is installed. As described above, the contact area is positioned differently in each cavity to intersect a different conductor of the electrical wire. The contact elements are adapted accordingly.

[0029] Advantageously, the contact elements have at least one, and preferably two, locking devices. These are positioned on the contact elements such that they engage in a suitably designed undercut in the cavity of the insulating body. This prevents the contact element from falling out of the cavity of the insulating body.

[0030] The cavity in the insulating body is advantageously open in the area of ​​the plug-in side to allow the contact element to be inserted into the cavity. By inserting the contact element into the cavity, a conductor arranged in the cable receiving channel is made contact through the second contact side of the contact element, penetrating the insulation.

[0031] In a further embodiment, the insulating body of the connector is designed in two parts. The insulating body consists of a base body and a cable manager. The base body essentially comprises the mating side of the insulating body. The cable manager serves to hold the electrical conductor and forms the contact side of the insulating body.

[0032] The base body of the two-part insulating body incorporates the plug-in area of ​​the cavity. It also features a slot intersecting the plug-in area for receiving and mounting the contact element onto a PCB. Unlike the one-piece insulating body, this cavity does not have an opening in the plug-in area for inserting the contact element into the insulating body. Instead, the contact element is inserted into the insulating body, preferably the base body, via the intersection of the two parts.

[0033] The contact area of ​​the cavity is located in the cable manager, which forms the second part of the insulating body. The cable channels for the cable to be connected are also arranged in the cable manager.

[0034] Interlocking arms and engagement points on the base body and / or cable manager allow the two parts to be connected to form an insulating body. Contact elements housed in the base body are inserted into the contact area within the cable manager when the base body and cable manager are joined. Upon insertion into the contact area, conductors inserted into the cable channels are made to the second contact surface of the contact element, creating an insulation-penetrating connection.

[0035] In a preferred embodiment, the locking mechanism between the base body and the cable manager is designed in two stages. When the two parts of the insulating body are brought together, they first lock into a first locking stage. In this locking stage, the base body and insulating body are not fully locked together. The contact elements received in the base body do not project fully into the contact area of ​​the cavity in the cable manager with their second contact side.

[0036] In this first locking position, the conductors of an electrical wire to be contacted can be inserted into the cable channels in the cable manager. By further pressing the base and cable manager together from the first locking position to a second locking position, they are finally fully locked into place. The second contact surfaces of the contact elements penetrate further into the contact areas of the cavities in the cable manager. The conductors located in the cable channels are contacted by the second contact surfaces of the contact elements. An electrical connection between the conductors of the electrical wire and the contact elements is established. Examples of implementation

[0037] Exemplary embodiments of the invention are shown in the drawings and are explained in more detail below. They show: Fig. 1 a connector in a first embodiment in a top view; Fig. 2. Remove the connector Fig. 1 in a side view; Fig. 3. Remove the connector Fig. 1 in a front view; Fig. 4. Remove the connector Fig. 1 in a spatial sectional view AA; Fig. 5 a second embodiment of a connector in the same view as Fig. 4; Fig. 6 a third embodiment of a connector in cutaway side view; Fig. 7. Remove the connector Fig. 6 in cut-back rear view; Fig. 8 a single contact element of the connector made of Fig. 6; Fig. 9 the connector out Fig. 1 before assembly; Fig. 10 the connector out Fig. 1 during assembly; Fig. 11 the connector out Fig. 1 after assembly; Fig. 12 the connector out Fig. 5 before assembly; Fig. 13 the connector out Fig. 5 during assembly in a first assembly step; Fig. 14 the connector out Fig. 5 during assembly in a second assembly step; Fig. 15 the connector out Fig. 5 during assembly in a third assembly step; Fig. 16 the connector out Fig. 5 after assembly; and Fig. 17 an application example of the connector from Fig. 6.

[0038] The figures contain simplified, schematic representations. In some cases, identical reference symbols are used for elements that are the same but may not be identical. Different views of the same elements may be scaled differently.

[0039] The Fig. Figure 1 shows a top view of a connector 1 according to the invention. The connector 1 is formed from an insulating body 2 which has a T-shaped base. The insulating body 2 forms a mating side 11 and a contact side 12 of the connector 1.

[0040] An electrical conductor 5 is shown on the contact side 12 of the connector 1, which is inserted into and passes through the insulating body 2. Centrally located between the plug side 11 and the contact side 12 of the connector 1, locking elements 35, 35', 35'' of three contact elements 3, 3', 3'' embedded in the insulating body 2 are visible. The locking elements 35, 35', 35'' engage in recesses in the insulating body 2, thus ensuring a secure fit of the contact elements 3, 3', 3'' within the insulating body.

[0041] In the Fig. 2 is connector 1 from Fig. Figure 1 shows a side view. A slot 24 is visible on the mating side 11 of the connector 1, extending across the entire mating side 11. On the inner sides of the slot 24 are locking features 26. These locking features 26 serve to later lock the connector 1 onto a printed circuit board 4 (PCB). The chamfer of the locking features 26 in the mating direction allows the connector 1 to be plugged onto a PCB 4.

[0042] Three cable channels 25, 25', 25'' are provided on the contact side 12 of the connector 1. The partially overlapping cable channels 25, 25', 25'' completely penetrate the insulating body 2. An electrical conductor 5 is shown inserted into the cable channels 25, 25', 25''. The electrical conductor 5 shown is designed as a ribbon cable, with the three conductors 5', 5'', 5''' each arranged in one of the cable channels 25, 25', 25''.

[0043] Connector 1 from Fig. 1 and Fig. 2 is in the Fig. Figure 3 shows a further view, looking frontally at the plug-in side 11. In addition to the features already mentioned in Figure 3, the following are also visible: Fig. 1 and Fig. The elements shown and described in Figure 2 have three cavities 20, 20', 20'' which are provided in the insulating body 2 to receive the contact elements 3, 3', 3''. The cavities 20, 20', 20'' extend from the plug-in side 11 to the contact side 12 of the insulating body 2.

[0044] To illustrate the position of the contact elements 3, 3', 3'' in the cavities 20, 20', 20'' in the insulating body 2, the following is shown in the Fig. 4 a spatial sectional view AA of connector 1 from Fig. 1 shown. Section AA shows the contact element 3 along cavity 20.

[0045] Cavity 20 is formed from a plug-in area 21 and a contact area 22. The plug-in area 21 is located in the plug-side area of ​​the insulating body, shown here on the left. The contact area 22 of cavity 20 is arranged in the contact side 12 of connector 1, shown on the right. The contact area 22 of cavity 20 is located in the lower area to contact the lowest conductor 5' of the electrical cable 5. The other contact areas 22', 22'' of the two further cavities 20', 20'' are arranged accordingly in a different plane to contact the other conductors 5'', 5'''.

[0046] The contact element 3 consists of a left, first contact side 31 and a right, second contact side 32. The first contact side 31, comprising two contact arms 33, is designed as a fork-shaped contact element. The first contact side 31 is located in the plug-in area 21. The two contact arms 33 are positioned above and below the slot 24 in the insulating body 2. Only one contact point 34 of each contact arm 33 projects into the slot 24, making contact with an inserted circuit board 4.

[0047] Two locking devices 35 are provided in the central area of ​​the contact element 3. These engage in an undercut in the cavity 20 of the insulating body so that the contact element 3 cannot fall out of the insulating body 2.

[0048] The second contact side 32 of the contact element 3 is designed as a so-called insulation displacement connector (IDC). Such IDC contacts penetrate the insulating layer to make contact with electrical conductors. This second contact side 32 is located in the contact area 22 of the cavity 20. Here, the IDC contact connects to the conductor 5' of the electrical conductor 5.

[0049] The other, non-visible, contact elements 3', 3'' have a second contact side 32, which is located in other planes, corresponding to the cable receiving channels 25', 25''. Advantageously, the contact areas 22 and 22'', as well as the cable receiving channels 25 and 25'', can be arranged such that the same contact element 3 can be used in both. This element simply needs to be rotated 180° along the cavity 20 so that the second contact side 32 is provided once in the upper area and once in the lower area.

[0050] The Fig. 5 shows the same view as in Fig. 4, however, of a connector 1 in a second embodiment. In this particular embodiment of the connector 1, the insulating body 2 is not formed in one piece, but consists of two parts. The insulating body 2 is formed from a base body 2a and a cable manager 2b.

[0051] The base body 2a includes the plug-in area 21 of the cavity 20. As in the one-piece version, a slot 24 is provided on the plug-in side 11, into which a circuit board 4 is inserted, as shown. The cavity 20 extends with its contact area 22 into the cable manager 2b. The contact element 20 can be inserted into the base body 2a via the parting line through the two components (2a, 2b) of the insulating body 2. Mounting the contact element 20 via the plug-in side 11 of the insulating body 2 is not necessary.

[0052] To achieve locking of the base body 2a to the cable manager 2b, locking arms 27 are provided. The locking arms 27 molded onto the cable manager 2b, as shown here, engage with corresponding locking elements on the base body 2a. Alternatively, locking arms 27 on the base body 2a could engage with locking elements on the cable manager 2b.

[0053] A third embodiment of connector 1 is described in the Fig. 6, Fig. 7, Fig. 8 and Fig. 17 shown. Fig. 6 shows the connector 1 in sectional view, similar to the embodiment shown in Fig. 5. In this particular embodiment, the orientation of the second contact sides 32, 32' of the contact elements 3 is different.

[0054] These are not designed to be flat in order to contact a conductor 5 running parallel to the slot 24. In this embodiment, the second contact sides 32, 32' are rotated or angled by 90° relative to the first contact side 31. Likewise, the contact areas 22 and the cable receiving channels 25 are adapted to the 90° rotated orientation. This orientation allows an electrical conductor 5 to be inserted vertically into the connector 1 from above or below.

[0055] Connector 1 from Fig. 6 is in Fig. Figure 7 shows a rear, cutaway view. The section along the five conductors 5', 5'', 5''', 5'''', 5'''', illustrates the contacting of the conductors 5', 5'', 5'''', 5'''', 5''''. The 90° rotated second contact faces 32, 32', 32'', 32''', 32'''' of the contact elements 3, 3', 3'', 3''', 3'''' each intersect one of the conductors 5', 5'', 5''', 5'''', 5'''''.

[0056] The special feature of the embodiment shown here is that all contact elements 3, 3', 3'', 3''', 3'''' are identical. Due to their arrangement side by side and the alternating orientation of the contact elements 3, 3', 3'', 3'''', 3'''', only one type needs to be manufactured, which can be used to contact all conductors 5', 5'', 5''', 5'''', 5'''''.

[0057] A contact element 3 of connector 1 from the Fig. 6 is occasionally found in the Fig. Figure 8 shows the second contact side 32, which is rotated 90° relative to the first contact side 31. By designing the contact element 3 as a stamped and bent part, it is easy from a production standpoint to rotate the two sides 31 and 32 relative to each other.

[0058] The locking elements 35 shown on the contact element 3 are designed for locking into a two-part insulating body 2a, 2b. Alternatively, the contact element 3 shown can also be inserted into a one-piece insulating body 2. For this to be possible, only the chamfered sides of the locking elements 35 would need to be oriented towards the second contact side 32 to allow insertion into the insulating body 2. The illustrated orientation of the chamfered sides of the locking elements 35 is intended to simplify insertion of the contact element 3 from the interface between the base body 2a and the cable manager 2b.

[0059] An application example of connector 1 from the Fig. 6, Fig. 7 and Fig. 8 is in the Fig. Figure 17 illustrates this. Due to the particularly space-saving design of the connector 1 according to the invention, several, here three, connectors 1, 1', 1'' can be arranged very close together. Thus, with a continuous conductor 5 that contacts all connectors 1, 1', 1'', three circuit boards 4, 4', 4'' can be connected in a very small space.

[0060] With a printed circuit board thickness of 1 mm and a connector height of approximately 3.75 mm (1, 1', 1''), the overall height of the three printed circuit boards (4, 4', 4'') including connectors (1, 1', 1'') is just 12.25 mm. This even takes into account a spacing of 0.5 mm between each connector (1, 1', 1'').

[0061] In the Fig. 9, Fig. 10 and Fig. 11, as well as the Fig. 12, Fig. 13, Fig. 14, Fig. 15 and Fig. Figure 16 illustrates the assembly of two different embodiments of the connector 1 according to the invention. The following is shown in the Fig. 9, Fig. 10 and Fig. 11 of the connectors 1 from the Fig. Shown 1 to 4. In the Fig. 12, Fig. 13, Fig. 14, Fig. 15 and Fig. 16. The assembly of connector 1 from the Fig. 5 shown. The assembly of connector 1 from Fig. However, 5 is also identical to the connector from the Fig. 6, Fig. 7 and Fig. 17 to be applied.

[0062] The Fig. Figure 9 shows the insulating body 2 and three contact elements 3, 3', 3''. The contact elements 3, 3', 3'' are arranged in front of the cavities 20, 20', 20'' of the insulating body 2. The contact element 3' is symmetrical. That is, the second contact side 32' is arranged centrally to the first contact side 31'. On the contact element 3'', the second contact side 32'' is located in the upper region of the first contact side 31''. The contact element 3 is identical to the contact element 3'', but rotated by 180°, so that the second contact side 32 is located in the lower region of the first contact side 31.

[0063] To mount connector 1, the cable 5 must first be pushed into the cable channels 25 of the insulating body 2. This is shown in Fig. Figure 10 shows each of the conductors 5', 5'', 5''' of the conductor 5 designed as a flat ribbon cable is inserted into one of the cable receiving channels 25, 25', 25''.

[0064] In the Fig. Figure 11 shows the connection of the conductors 5, 5', 5'' with the contact elements 3, 3', 3''. By inserting the contact elements 3, 3', 3'' into the cavities 20, 20', 20'' of the insulating body 2, the second contact sides 32, 32', 32'' cut into the cable receiving channels 25, 25', 25'' and the conductors 5', 5'', 5''' of the electrical conductor 5 received therein. The second contact sides 32, 32', 32'', designed as insulation displacement connectors, penetrate the insulation of the conductors 5', 5'', 5''' and make electrical contact with them. When the contact elements 3, 3', 3'' are fully inserted into the cavities 20, 20', 20'', the locking devices 35, 35', 35'' of the contact elements 3, 3', 3'' engage in an undercut in the cavities 20, 20', 20''. This prevents the contact elements 3, 3', 3'' from falling out of the insulating body 2.

[0065] The assembly of a connector 1 with a two-part insulating body 2a, 2b from the Fig. 12, Fig. 13, Fig. 14, Fig. 15 and Fig. 16 is in the Fig. 12 to 16 are described in more detail.

[0066] In Fig. Figure 12 shows the two-part insulating body, consisting of the base body 2a and the cable manager 2b. The contact elements 3, 3', 3'' are shown between them. In this two-part version, the contact elements 3, 3', 3'' are inserted into the base body 2a not from the plug-in side 11, but from the contact side 12. As in the one-part version of the insulating body 2, the cavities 20, 20', 20'' serve this purpose. The contact elements 3, 3', 3'' are fully inserted into the base body 2a and lock into place by means of the locking devices 35, 35', 35''. As in Fig. As can be seen, the second contact sides 32, 32', 32'' still protrude from the base body 2a in the direction of the cable manager 2b.

[0067] The cable manager 2b is then, as described in Fig. As shown in Figure 14, the cable manager 2b is attached to the base body 2a. The locking arms 27 serve both as guides and as locking devices. The cable manager 2b is not fully attached to the base body 2a. In this first locking stage, the second contact sides 32, 32', 32'' of the contact elements 3, 3', 3'' are not yet fully engaged in the contact areas 22, 22', 22'' of the cavities 20, 20', 20''.

[0068] In a third step, the wires 5', 5'', 5''' of the electrical conductor 5 are inserted into the cable receiving channels 25, 25', 25''. Fig. 15 The conductors 5', 5'', 5''' of conductor 5 are completely guided through the cable receiving channels 25, 25', 25''.

[0069] Finally, as in Fig.As shown in Figure 16, the cable manager 2b is fully pushed onto the base body 2a. This allows the second contact sides 32, 32', 32'' to fully penetrate the contact areas 22, 22', 22'' and contact the conductors 5', 5'', 5''' of the conductor 5 in the cable receiving channels 25, 25', 25''. In this position of the cable manager 2b relative to the base body 2a, the locking arms 27 engage in a second locking stage. Reference symbol list 1 connector 11 Plug-in side 12 Contact page 2 insulating bodies 2a Basic body 2b Cable Manager 20 cavities 21 Plug area 22 Contact area 23 Rest recess 24 slots 25 cable intake channels 26 Raster forming 27 Raster arm 28 Opening 3 Contact element 31 first contact page 32 second contact page 33 contact arms 34 contact points 35 Resting agents 4 ladder map 5 electrical conductors

Claims

[1] Electrical connector (1) for contacting an electrical conductor (5) designed as a ribbon cable with more than one conductor (5', 5'', 5'''') arranged side by side with a circuit board (4) consisting of an insulating body (2) and more than one electrical contact element (3, 3', 3''), wherein the insulating body (2) has a cavity (20, 20', 20'') for receiving one of the contact elements (3, 3', 3''), which forms a first part designed as a plug-in area (21) for plugging onto the card edge of the circuit board (4) and a second part designed as a contact area (22) in the insulating body (2), wherein the contact elements (3, 3', 3'') have a first contact side (31) and a second contact side (32, 32', 32''), wherein the first contact side (31) of the contact elements (3, 3', 3'') is suitable for contacting the circuit board (4) and the second contact side (32, 32', 32'') is suitable for insulation-penetrating contacting of the electrical conductor (5), wherein the contact elements (3, 3', 3'') are arranged in the cavities (20, 20', 20'') of the insulating body (2) such that the first contact side (31) is arranged in the plug-in area (21) and the second contact side (32, 32', 32'') is arranged in the contact area (22), wherein the first contact side (31) of the contact elements (3, 3', 3'') is flat and fork-shaped and forms two contact arms (33, 33'), wherein the contact arms (33, 33') form two opposing contact points (34, 34'), wherein the contact arms (33, 33') of the first contact side (31) of the contact elements (3, 3', 3'') are formed in a mirror-symmetrical manner with respect to the plane of the circuit board (4) as a plane of symmetry, wherein the second contact side (32, 32', 32'') at least one of the contact elements (3, 3', 3'') is arranged laterally to this plane of symmetry of the first contact side (31). [2] Electrical connector (1) according to claim 1 characterized by , that the second contact side (32, 32', 32'') of the contact elements (3, 3', 3'') is designed as a piercing or cutting clamp contact. [3] Electrical connector (1) according to one of the preceding claims characterized by , that the contact elements (3, 3', 3'') are stamped and bent parts. [4] Electrical connector (1) according to claim 3 characterized by, that the first contact side (31) and the second contact side (32, 32', 32'') of the contact elements (3, 3', 3'') are twisted or bent relative to each other. [5] Electrical connector (1) according to claim 4 characterized by , that the first contact side (31) and the second contact side (32, 32', 32'') of the contact elements (3, 3', 3'') are twisted or bent relative to each other by 90°. [6] Electrical connector (1) according to one of the preceding claims characterized by , that the contact elements (3, 3', 3'') each have at least one locking means (35, 35', 35'') which locks into a locking recess in the insulating body (2). [7] Electrical connector (1) according to any one of the preceding claims characterized by, that the cavities (20, 20', 20'') of the insulating body (2) are arranged side by side, the insulating body (2) having the same number of adjacent cable receiving channels (25, 25', 25'') for receiving one conductor (5', 5'', 5'''') of the conductor (5), each of the cable receiving channels (25, 25', 25") intersecting exactly one of the cavities (20, 20', 20") at right angles. [8] Electrical connector (1) according to claim 7 characterized by , that the contact areas (22) of the cavities (20, 20', 20") lie in different planes, each crossing a cable receiving channel (25, 25', 25"). [9] Electrical connector (1) according to any one of the preceding claims characterized by , that the insulating body (2) has a slot (24) wherein the slot (24) perpendicularly intersects the plugging area (21) of the cavities (20, 20', 20"). [10] Electrical connector (1) according to claim 9 characterized by, that the slot (24) is open on three sides. [11] Electrical connector (1) according to claim 9 in conjunction with claim 1 characterized by , that the contact points (34, 34') of the contact arms (33, 33') protrude at least partially into the slot (24). [12] Electrical connector (1) according to any one of claims 9 to 11 characterized by , that at least one locking feature (26) is formed on the side walls of the slot (24). [13] Electrical connector (1) according to claim 12 characterized by , that the grid formation (26) is wedge-shaped or dome-shaped. [14] Electrical connector (1) according to any one of claims 9 to 13 characterized by , that the insulating body (2) is designed in two parts wherein a first part forms a base body (2a) in which the insertion area (21) of the cavities (20, 20', 20"), the slot (24) and the locking recesses are provided, and a second part forms a cable manager (2b) in which the contact areas (22) of the cavities (20, 20', 20") and the cable receiving channels (25, 25', 25") are arranged, wherein the base body (2a) and the cable manager (2b) can be locked together by means of locking arms (27). [15] Electrical connector (1) according to claim 14 characterized by , that the locking mechanism between the base body (2a) and the cable manager (2b) is two-stage, wherein in a first detent stage the second contact side (32, 32', 32") of a contact element (3, 3', 3") detented in a cavity (20, 20', 20") is located outside the cable receiving channel (25, 25', 25"), and In a second locking stage, the second contact side (32, 32', 32") cuts the cable intake channel (25, 25', 25"). [16] Electrical connector (1) according to any one of the preceding claims characterized by, that the plugging area (21) of the cavities (20, 20', 20") has an opening facing away from the contact area (22), through which the contact elements (3, 3', 3") can be inserted into the cavities (20, 20', 20"). [17] Electrical connector (1) according to one of claims 14 to 15 characterized by , that the plugging area (21) of the cavities (20, 20', 20") has an opening facing the contact area (22) through which the contact elements (3, 3', 3") can be inserted into the cavities (20, 20', 20").

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