Electrical plug contact, electrical terminal block and method for manufacturing an electrical plug contact

Abstract

Electrical plug contact (1) for connecting at least one conductor (2) or one pin contact (3), with two frame-like end regions (4, 5) and a spring section (6) connecting the two end regions (4, 5) together, wherein the two end sections (4, 5) and the spring section (6) are integrally connected, wherein the spring section (6) has an inwardly curved central section (7) and extends in the insertion direction (E) of a conductor (2) or pin contact (3) that can be inserted through an end region (4, 5), and wherein the end regions (4, 5) are bent by three parallels to each other and parallel to the longitudinal extent (L K ) of the plug contact (1) bending edges (B1, B2, B3) are produced and have four side walls (S1, S2, S3, S4).

Description

[0001] The invention relates to an electrical plug contact for connecting at least one conductor or a pin contact, an electrical terminal block with a housing and a plug contact arranged in the housing, and a method for manufacturing such a plug contact from a flat metal strip.

[0002] Electrical plug connectors are known in the art in a wide variety of designs. They serve to establish an electrical connection between an insulated rigid conductor or a conductor with a ferrule, or a pin contact, inserted into the plug connector and a metal part, such as a busbar, which is electrically connected to the plug connector. In addition, an electrical plug connector can also serve to electrically connect two electrical conductors, two pin contacts, or one electrical conductor and one pin contact via a metal part. The conductor or pin contact is pressed against a contact section of the metal part by a spring arm, so that such electrical plug connectors are often also referred to as spring contacts due to their spring-like properties.

[0003] From DE 103 40 332 B3, an electrical plug connector is known which is used less for connecting an electrical conductor and primarily for connecting a pin contact or a flat plug. The known plug connector has four spring legs forming a kind of contact tulip, a connecting area connecting the spring legs, and a terminal area adjacent to the connecting area. The opposing spring legs of the known plug connector are designed such that they form two contact areas. One contact area serves to contact a pin contact inserted longitudinally between the spring legs, while the other contact area serves to contact a pin contact inserted perpendicularly to the longitudinal extent of the spring legs.

[0004] In addition to plug connectors specifically designed for pin contacts, there are also electrical plug connectors intended for connecting an electrical conductor. These plug connectors feature a clamping spring and a metal part connected to the clamping spring. The clamping spring is typically U-shaped and has a clamping leg and a contact leg. The contact leg connects the clamping spring to the metal part, while the clamping leg serves to press the electrical conductor to be connected against a section of the metal part, which together with the clamping leg forms a spring-loaded clamping connection.

[0005] An electrical terminal block with such a plug contact is known, for example, from DE 198 17 927 C1. The plug contact consists of a U-shaped clamping spring and an L-shaped metal part connected to a plug or socket part. The metal part has a section arranged perpendicular to the conductor insertion direction, in which a rectangular opening is formed through which the electrical conductor to be connected can be inserted. The ends of the U-shaped clamping spring are arranged in the opening such that the rearward arc of the spring is located in front of the opening in the conductor insertion direction, and the clamping leg presses an inserted electrical conductor against the upper edge of the opening, thereby establishing the electrically conductive connection between the conductor and the metal part.

[0006] An electrical terminal block with a plug-in contact consisting of a clamping spring and a metal part is also known from DE 10 2004 045 026 B3, wherein the clamping spring is not U-shaped but loop-shaped. Furthermore, the recess for inserting an electrical conductor to be connected is not formed in a section of the metal part, but in the contact leg of the clamping spring. To fix the clamping spring and the metal part, a section of the metal part is inserted through the recess in the contact leg opposite to the insertion direction of the conductor to be connected, with the clamping leg of the clamping spring pressing this section of the metal part against a retaining section formed on the clamping spring.

[0007] DE 1 917 503 A discloses a screwless terminal block comprising a strip-shaped contact plate and a clamping spring bent at both ends. The two ends of the contact plate are encompassed by the ends of the clamping spring, for which purpose an opening is formed in each of the bent ends of the clamping spring. The central portion of the clamping spring, bent towards the contact plate, is fastened to the contact plate by means of a screw or rivet. According to one embodiment, the bent central portion of the clamping spring can also be supported on the contact plate.

[0008] A terminal block is known from GB 727 380 A in which the fastening element is formed by a bracket made of bent sheet metal, which extends around a busbar. A helical compression spring is arranged between an inner wall of the bracket and the opposite top surface of the busbar. If the bracket is pressed against the spring force of the helical compression spring towards the busbar, a conductor to be connected can be inserted into the bracket below the busbar. The conductor is then pulled against the underside of the busbar by the spring force of the helical compression spring. According to one embodiment, two corresponding brackets are arranged in a housing, with a busbar extending through the housing from one bracket to the other. A leaf spring is also provided, which is mounted in the housing in its central region and projects into each of the brackets with its two free ends.To connect an electrical conductor to the busbar, the two clamps of this terminal block must each be pressed against the spring force of the leaf spring in the direction of the busbar.

[0009] DE 10 2013 106 117 A1 discloses a connector for receiving a flat contact, wherein the plug contact is designed as a box spring having two end regions. The box spring has a box-shaped base body in which a spring tongue is formed, the free end of which is bent towards the flat contact to be inserted. A similar box spring is also disclosed in US 3,283,289 A.

[0010] The various known electrical plug connectors and terminals all share the characteristic of being relatively large in relation to the diameter of the electrical conductor or pin contact being connected. Due to the increasing miniaturization of electrical components, less and less connection space is available for electrical connection devices and plug connectors. This can be particularly problematic when the electrical plug connector is not used alone but together with several plug connectors in an electrical connection device, for example, in a multi-pole socket.Furthermore, the known plug contacts have the disadvantage that an increased amount of material is required to manufacture the specially bent metal parts and the clamping springs, whereby a not insignificant proportion of the material is produced as waste when manufacturing the metal part and the clamping spring by stamping it out from a flat strip of metal.

[0011] The present invention therefore aims to provide an electrical plug connector that is as compact as possible while still enabling a simple and secure connection of an electrical conductor or a pin contact. Furthermore, a method is to be provided for manufacturing the electrical plug connector simply and with minimal material usage.

[0012] This problem is solved in the electrical plug connector with the feature of claim 1 in that the plug connector consists of two frame-like end regions and a spring section connecting the two end regions together, wherein the two end regions and the spring section are integrally connected together, wherein the spring section has an inwardly curved central section and extends in the insertion direction of a conductor or pin contact that can be inserted through an end region, and wherein the end regions are produced by bending around three bending edges running parallel to each other and parallel to the longitudinal extent of the plug connector and have four side walls.

[0013] With the electrical plug connector according to the invention, a rigid electrical conductor, a conductor with a ferrule, or a pin contact can be directly connected to the plug connector by inserting the conductor or pin contact through one of the two frame-like end sections into the plug connector. The insertion opening of the plug connector formed by the frame-like end section does not need to be significantly larger than the cross-section of the conductor to be connected, so that the electrical plug connector according to the invention, whose longitudinal extent runs parallel to the insertion direction of the conductor to be connected, has a very small footprint. Furthermore, since the two end sections and the central spring section are integrally connected, the manufacture and assembly of the electrical plug connector are very simple.In particular, it is not necessary to mechanically attach a separate clamping spring to the plug contact, so that holding sections provided for this purpose in the prior art can be dispensed with.

[0014] Basically, it is possible to connect only an electrical conductor or a pin contact to the electrical plug connector. In this case, the electrical conductor or pin contact is inserted through both frame-like end sections, whereby the inserted electrical conductor or pin contact is then pressed against the respective base of the two end sections by the inwardly curved central section of the spring section, i.e., in the direction of the conductor or pin contact, thus establishing the electrical contact between the conductor or pin contact and the plug connector.

[0015] Preferably, the electrical plug connector is used to connect at least one conductor or one pin contact to a busbar, wherein the busbar is connected to the plug connector such that the longitudinal extent of the busbar runs parallel to the longitudinal extent of the plug connector and the busbar is contacted forcefully by both frame-like end regions. The electrical connection between the conductor and the busbar is achieved by the spring force of the spring section, which presses an inserted electrical conductor against the busbar. If two electrical conductors or two pin contacts are electrically connected to the busbar by the electrical plug connector, the busbar is pressed against the two conductors by the spring section, with each conductor being inserted into a frame-like end region below the busbar.

[0016] According to an advantageous embodiment of the electrical plug connector according to the invention, the frame-like end regions each have a slot, so that the end regions are not completely closed in the circumferential direction. If the busbar to be connected to the electrical plug connector is a straight busbar, it can be inserted through the two frame-like end regions of the plug connector along its length. However, this is not possible if the busbar does not have a constant cross-section over its entire length, but, for example, has an angled connection area itself. If the frame-like end regions of the electrical plug connector are not completely closed, but rather each has a slot on one side wall, the busbar can simply be inserted through the slots into the two frame-like end regions.

[0017] According to a preferred embodiment of the plug connector according to the invention, the slots in the frame-like end regions are not arranged on the same side of the electrical plug connector, but on opposite sides. The insertion of a current bar, which has an angled connection section, can then be accomplished by first placing the plug connector with its curved central section onto the busbar, whereby the longitudinal extent of the plug connector does not coincide with the longitudinal extent of the busbar. The plug connector is then rotated relative to the busbar, whereby the busbar can be inserted through the slots into the frame-like end regions. A connection section extending at an angle to the longitudinal extent of the busbar is located between the two frame-like end regions of the electrical plug connector, so that it does not have to be inserted through the end regions.

[0018] To ensure a secure and permanent connection between the busbar and the electrical plug connector, and to prevent the busbar from unintentionally detaching from its intended position with the plug connector, a locking element is provided on at least one frame-like end region according to a further advantageous embodiment of the invention. This locking element, together with a corresponding locking element formed on the busbar, causes the busbar to lock onto the plug connector. The locking element formed on the frame-like end region can, for example, be a locking recess into which a corresponding locking projection or lug formed on the busbar engages when the busbar is in its intended position within the frame-like end region.It is equally possible to have a locking recess in the conductor rail and a corresponding locking projection or detent on the frame-like end area.

[0019] If the electrical plug contact serves to connect an electrical conductor to a busbar arranged in the plug contact, the conductor can, for example, be inserted between one end of the busbar and the base of a frame-like end section. To facilitate the insertion of a conductor, the end section can be deflected slightly by applying a force directed perpendicular to the longitudinal extent of the plug contact, so that a space is created between the busbar and the base of the frame-like end section into which the conductor can be easily inserted. Inserting the conductor can be further facilitated by providing, according to a further advantageous embodiment of the invention, an insertion tongue on the end section that points away from the spring area.The insertion tongue has an angle to the longitudinal extent of the plug contact and thus also to the longitudinal extent of the busbar, so that an insertion funnel for the conductor to be connected is formed between the end of the busbar protruding from the frame-like end area and the insertion tongue.

[0020] According to a further preferred embodiment, an edge or projection is formed on at least one frame-like end region as a pull-out protection feature for a conductor or pin contact to be connected. This ensures that a conductor or pin contact inserted into the frame-like end region cannot be unintentionally pulled out again. To prevent the formed edge or projection from making insertion of the conductor too difficult, it is preferably designed to rise in the insertion direction of the conductor. When a conductor is inserted, it can thus slide over the edge, while the edge, acting like a barb, at least makes it more difficult for the conductor to move in the opposite direction, i.e., to be pulled out of the frame-like end region.

[0021] The electrical plug contact according to the invention can be easily manufactured as a stamped and bent part from a flat metal strip, whereby, as a rule, a plurality of corresponding plug contacts are stamped out from a larger metal strip and then bent so that they have their final shape.

[0022] The inventive method for manufacturing an electrical plug contact from a flat metal strip is characterized in that, in a first step, the basic contour of the plug contact is punched out. The basic contour has two flat end regions and a central region connecting the two end regions, the two end regions extending perpendicularly away from the central region in opposite directions. The basic contour of the plug contact is thus approximately Z-shaped, with the angle between the two end regions and the central region being 90° in each case.

[0023] In the inventive method, the basic contour of a plug contact is punched out of the metal strip such that the longitudinal extent of the central region of the basic contour runs at an angle of 45° to the longitudinal extent of the metal strip. The basic contour of the individual plug contacts is thus punched out of the preferably rectangular metal strip at an angle to its longitudinal extent. This results in only a small proportion of the metal strip remaining as waste or rejects after punching out the basic contour of the plug contacts, thus minimizing the amount of material required to manufacture the plug contacts.

[0024] After the basic contour of the plug connector has been die-cut, the finished plug connector can be produced from the flat basic contour using simple bending processes. In a first step, the central area of ​​the basic contour is bent slightly perpendicular to its plane of extension, creating a curved central section or a curved spring section. In a further step, the end sections are bent around three bending edges that run parallel to each other and perpendicular to the longitudinal extent of the end sections, creating a frame-like end section with four side walls. The order of these two steps can also be reversed, so that the frame-like end sections are bent first and then the curved central section is produced.

[0025] If the frame-like end sections of the finished electrical plug connector are not to be completely closed, but rather each have a slot, this can be easily achieved by ensuring that the distance x1 between the first bending edge provided at the transition from the middle section to the end section and the second bending edge is greater than the distance x2 between the third bending edge and the free end of the end section. After the end section has been bent, a gap then exists between the free end of the end section and the opposite section of the middle section or the spring section, forming the slot of the frame-like end section through which a busbar can be inserted or screwed into the frame-like end section.

[0026] If the frame-like end section of the finished electrical connector is to be completely closed, this can be achieved by ensuring that the distance x1 between the first bending edge and the second bending edge at the transition from the central to the end section corresponds to the distance x2 between the third bending edge and the free end of the end section, so that the opposing side walls have the same length. In a further step, the free end of the end section is connected to the opposite edge section of the central section. This connection can be made, for example, by crimping or welding, particularly laser welding.

[0027] The formation of an edge in a side wall of an end area can also be easily produced by punching and subsequent bending, so that after the end area is bent over, the edge extends towards the opposite side wall and thus into the interior of the frame-like end area.

[0028] In detail, there are numerous possibilities for designing and further developing the plug connector according to the invention. Reference is made to both the claims subordinate to claim 1 and to the following description of preferred embodiments in conjunction with the drawing. The drawing shows: Fig. 1 a perspective view of an electrical plug connector according to the invention, Fig. 2 the electrical plug contact according to Fig. 1, with a plugged-in busbar and an electrical conductor to be connected, Fig. 3 an electrical plug connector, with a busbar inserted and two electrical conductors connected to the plug connector, from the side, as well as an enlarged section view according to Fig. 3a, Fig. 4. the electrical plug contact according to Fig. 1 with a pin contact inserted, from the side, Fig. 5 A perspective view of an electrical plug connector together with a busbar, in its not yet fully assembled state, Fig. 6. the electrical plug contact according to Fig. 2, with a ladder inserted and a pull-out lock, and Fig. 7 a piece of metal from which several plug contacts can be produced by punching and bending.

[0029] The Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. Figure 6 shows an electrical plug contact 1 for terminating at least one conductor 2 or one pin contact 3 (see Figure 6). Fig. 4). The one separately in Fig. The electrical plug connector 1 shown in Figure 1 has two frame-like end sections 4 and 5 and a spring section 6 connecting the two end sections 4 and 5, the spring section 6 being shaped such that it has an inwardly curved central section 7. The electrical plug connector 1 is thus formed in one piece, and can be manufactured from a flat piece of metal by bending. In particular, strip spring steel can be used as the material for the plug connector 1.

[0030] In Fig. 2 is the electrical plug contact according to Fig. Figure 1 is shown rotated by 180°, with a straight busbar 8 arranged in the plug contact 1. The busbar 8 is positively surrounded by the two frame-like end regions 4, 5, so that the busbar 8 is securely arranged and held in the plug contact 1. As shown in Figure 1, the busbar 8 is rotated by 180° and a straight busbar 8 is arranged in the plug contact 1. Fig. As can be seen in section 2, the longitudinal extent L runs S the busbar 8 parallel to the longitudinal extent L K of the plug contact 1 and also parallel to the insertion direction E of an electrical conductor 2 to be connected. If the electrical conductor 2 is inserted into the plug contact 1, it is pressed against the busbar 8 arranged below it by the curved central section 7 of the spring section 6, as can be seen from Fig. 6 is recognizable. Fig. 2 It is also apparent that the installation space required by the plug contact 1 for connecting an electrical conductor 2 to a busbar 8 is very small, whereby the height and width of the plug contact 1, i.e. its dimensions perpendicular to the longitudinal extent L K are only slightly larger than the corresponding dimensions of conductor 2 and busbar 8 combined.

[0031] As from Fig. As can be seen in Figure 3, the electrical plug contact 1 can be used not only to connect a conductor 2 to a busbar 8 arranged in the plug contact 1, but also to electrically connect two conductors 2, 2' via a busbar 8. For this purpose, the two electrical conductors 2, 2' are each inserted into a frame-like end section 4, 5 of the plug contact 1 such that the conductors 2, 2' are clamped between the underside of the busbar 8 and the base 9 of the respective end section 4, 5. The curved central section 7 of the spring section 6 presses the busbar 8 against the inserted conductors 2, 2', thus ensuring good and lasting electrical contact between the conductors 2, 2' and the busbar 8. In order to insert an electrical conductor 2, 2' between the busbar 8 and the side wall S3 forming the base 9 of the end section 4, 5, the corresponding end section 4, 5 is formed by a perpendicular to the longitudinal extent LK The force F acting on the plug contact 1 is pressed down, so that the connection space for the conductor 2, 2' is opened. Pressing down the frame-like end section 4, 5 can, for example, be done simply with a finger, as shown in Fig. 3 is indicated at the right end area 4.

[0032] Fig. Figure 4 shows an application of the electrical plug connector 1 in which only one pin contact 3 is connected to the plug connector 1. The pin contact 3 is inserted through both end regions 4, 5 of the plug connector 1, so that the pin contact 3 is pressed downwards against the respective arc 9 of the end regions 4, 5 by the inwardly curved central section 7 of the spring section 6 – in the orientation shown. The clear width between the lower edge of the undisplaced curved central section 6 and the base 9 of the end regions 4, 5 must be slightly smaller than the corresponding dimension of the pin contact 3 so that a sufficient contact force is exerted by the spring section 6 on the pin contact 3.

[0033] Is the busbar 8 a straight busbar with a constant cross-section along its length, as for example in Fig. 2 and Fig. As shown in section 6, the busbar 8 can simply be extended in the direction of the longitudinal extent L. K The plug contact 1 is inserted through the two end sections 4 and 5. If, on the other hand, the busbar 8 – as in Fig. 5 shown - an angled connection area 10, so axial insertion of the busbar 8 into the end areas 4, 5 is not possible.

[0034] According to the preferred embodiment shown in the figures, the two frame-like end regions 4, 5 are not completely closed, but each has a slot 11 resulting from the fact that side wall S2 is longer than the opposite side wall S4. The busbar 8 can then be connected to the plug contact 1 by pivoting the busbar 8 through the slots 11 into the frame-like end regions 4, 5. For this purpose, the plug contact 1 is first inserted according to Fig. 5 with its curved central section 7 is placed onto the busbar 8, with the angled connection area 10 of the busbar 8 being located between the two end sections 4, 5. Subsequently, the plug contact 1 and the busbar 8 are rotated relative to each other, whereby the busbar 8 can be inserted through the slots 11 into the end sections 4, 5. As in Fig. As indicated by the arrow (5), for example, plug contact 1 can be rotated clockwise. Alternatively, busbar 8 can also be rotated counterclockwise.

[0035] To reliably prevent the plug contact 1 from unintentionally turning backwards or the busbar 8 from turning out of the frame-like end sections 4, 5, a locking mechanism can be provided between the frame-like end sections 4, 5 and the busbar 8. For this purpose, for example, locking recesses 12 can be formed on the side wall S1 of the frame-like end sections 4, 5 opposite the top of the busbar 8, and corresponding locking projections 13 can be formed on the top of the busbar 8.

[0036] Out of Fig. 3 and in particular the enlarged section view according to Fig. Figure 3a shows that an edge 14 is formed on the base 9 of the frame-like end section 4, which serves as a pull-out protection for a connected conductor 2. To ensure that the insertion of the conductor 2 into the frame-like end section 4 is not hindered by the edge 14, the edge 14 is designed to rise in the insertion direction E of the conductor 2. This allows a conductor 2 to be inserted into the frame-like end section 4 with minimal force, while the removal of the conductor 2 from the end section 4 is at least made more difficult by the edge 14, which then acts as a barb. To further facilitate the insertion of a conductor 2 into the frame-like end section 4, an insertion tongue 15 is also arranged on the base 9 of the end section 4, which, together with the end of the busbar 8 protruding from the end section 4, forms a kind of insertion funnel for the conductor 2.

[0037] Fig. Figure 6 shows a plug connector 1 with an inserted busbar 8 and a conductor 2 connected to the busbar 8, together with a part of the housing 16 that receives the plug connector 1 and thus a part of an electrical terminal block. A locking hook 17 is formed on the part of the housing 16, which engages behind the collar 18 of the ferrule 19 of the conductor 2. This creates a mechanical locking mechanism for the electrical conductor 2 with a ferrule 19, which can be released again using a simple tool, for example, the tip of a screwdriver.

[0038] Fig.Figure 7 shows a flat metal strip 20 from which several plug contacts 1 can be produced by punching and bending. For this purpose, the basic contour 21 of a plug contact 1 is first punched out, the basic contour 21 having two flat end regions 22 and a central region 23 connecting the two end regions 22. The end regions 22 extend in opposite directions, each perpendicular to the central region 23, so that the basic contour 21 is approximately Z-shaped. A particularly material-saving and very low-waste production of the basic contour 21 of the plug contacts 1 is possible because the longitudinal extent L MThe central area 23 runs at an angle α of 45° to the longitudinal extent L of the metal strip 20. This allows the basic contours 21 of the individual plug contacts 1 to be arranged very close to each other in the metal strip 20, whereby after punching out the individual basic contours 21 only a relatively small proportion of the metal strip 20 remains as waste.

[0039] After the basic contour 21 is punched out, the central section 20 is bent perpendicular to its plane of extension to create the curved central section 7 of the plug contact 1. The frame-like end sections 4, 5 are produced by successively bending the end sections 22 at the three parallel bending edges B1, B2 and B3, resulting in a frame-like end section 4, 5 with four side walls S1, S2, S3 and S4.

[0040] An incompletely closed frame-like end region 4, 5 can be easily produced by ensuring that the distance x1 between the first bending edge B1 provided at the transition from the middle region 23 to the end region 22 and the second bending edge B2 is greater than the distance x2 between the third bending edge B3 and the free end 24 of the end region 22.

[0041] In this way, an electrical plug contact 1 can be easily manufactured that has relatively small dimensions and requires very little material for its production. Due to its small dimensions, several plug contacts 1 can, for example, be used together in a multi-pole plug socket with small dimensions, such as an M12 plug socket, with the individual plug contacts 1 arranged parallel to each other in the plug socket.

Claims

[1] Electrical plug contact (1) for connecting at least one conductor (2) or one pin contact (3), with two frame-like end regions (4, 5) and a spring section (6) connecting the two end regions (4, 5) together, wherein the two end sections (4, 5) and the spring section (6) are integrally connected, wherein the spring section (6) has an inwardly curved central section (7) and extends in the insertion direction (E) of a conductor (2) or pin contact (3) that can be inserted through an end region (4, 5), and wherein the end regions (4, 5) are bent by three parallels to each other and parallel to the longitudinal extent (L K ) of the plug contact (1) bending edges (B1, B2, B3) are produced and have four side walls (S1, S2, S3, S4). [2] Electrical plug connector (1) according to claim 1, characterized by, that a busbar (8) is connected to the plug contact (1) such that the longitudinal extent (L S ) of the busbar (8) parallel to the longitudinal extent (L K ) of the plug contact (1) and the busbar (8) is positively contacted by the frame-like end areas (4, 5). [3] Electrical plug connector (1) according to claim 1 or 2, characterized by , that the frame-like end areas (4, 5) each have a slot (11) so that they are not completely closed. [4] Electrical plug connector (1) according to claim 3, characterized by , that the slots (11) in the frame-like end areas (4, 5) are arranged on opposite sides. [5] Electrical plug connector (1) according to one of claims 1 to 4, characterized by, that at least one frame-like end region (4, 5) has an edge (14) or a projection as a pull-out protection for a conductor (2) or a pin contact (3) to be connected, wherein the edge (14) or the projection rises in the insertion direction (E) of a conductor (2) or pin contact (3) that can be inserted through an end region (4, 5). [6] Electrical plug connector (1) according to one of claims 1 to 5, characterized by , that at least one frame-like end region (4, 5) has an insertion tongue (15) pointing away from the spring section (6). [7] Electrical terminal block with a housing (16) and an electrical plug contact (1) arranged in the housing (16) according to one of claims 1 to 6, characterized by , that a locking hook (17) is provided which, together with a wire end sleeve (19) of a connected conductor (2), forms a pull-out lock for the connected conductor (2). [8] Method for producing an electrical plug contact (1) according to any one of claims 1 to 6, from a flat metal strip (20), characterized by the following steps: • Cutting out the basic contour (21) of the plug contact (1), wherein the basic contour (18) has two end regions (22) and a central region (23) connecting the two end regions (22), wherein the two end regions (22) extend in opposite directions perpendicularly away from the central region (23) and wherein the longitudinal extent (L M ) of the central region (23) runs at an angle α of 45° to the longitudinal extent (L) of the metal strip (20), • Deflection of the central section (23) perpendicular to the extension plane of the central section (23), so that a curved central section (7) is formed, • Bending the end regions (22) around three bending edges (B1, B2, B3) running parallel to each other and perpendicular to the longitudinal extent of the end regions (22), so that a frame-like end region (4, 5) with four side walls (S1, S2, S3, S4) is created. [9] Method according to claim 8, characterized by , that the distance (x1) between the first bending edge (B1) provided at the transition from the middle area (23) to the end area (22) and the second bending edge (B2) is greater than the distance (x2) between the third bending edge (B3) and the free end (24) of the end area (22). [10] Method according to claim 8 for producing an electrical plug contact (1) according to claim 1 or 2, characterized by, that the distance (x1) between the first bending edge (B1) provided at the transition from the middle area (23) to the end area (22) and the second bending edge (B2) corresponds to the distance (x2) between the third bending edge (B3) and the free end (24) of the end area (22), and that the free end (24) of the end area (22) is connected in a further step to an edge section of the middle area (23). [11] Method according to any one of claims 8 to 10, characterized by , that in a side wall (S3) of at least one end region (22) an edge (14) or a projection is punched out and / or bent, so that the edge (14) or the projection extends in the direction of the opposite side wall (S1) after the end region (22) has been bent. [12] Method according to any one of claims 8 to 11, characterized by, that a side wall (S3) of at least one end region (22) has an insertion tongue (15) extending perpendicular to the longitudinal extent of the end region (22), and that the insertion tongue (15) is bent in a further step so that the insertion tongue (15) extends obliquely to the extension plane of the adjacent side wall (S3).

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