Electrical contact element

Abstract

An electrical contact element (1, 1'), in particular for contacting a circuit board (2), comprises a main body (10) and a contact lug (11) which is arranged on the main body (10) and has an angled region (110) which has a contact face (111) which is designed to be soldered to a further electrical contact face, the angled region (110) being angled starting from the main body (10). The electrical contact element (1, 1') also comprises one or more lamellae (12, 12') which are arranged on the main body (10) and each have at least one supporting face (121, 121') on which the angled region (110) of the contact lug (11) rests, the at least one supporting face (121, 121') being connected to the main body (10) via a bent portion (122, 122').

Description

[0001] Electrical contact element

[0002] The proposed solution relates to an electrical contact element, in particular for contacting a circuit board, a contact carrier comprising at least one such electrical contact element and a method for producing an electrical contact element.

[0003] Printed circuit boards, also known as printed circuit boards, are regularly assembled with multiple electrical contact elements, usually grouped together to form electrical contact carriers, using surface-mounted device (SMD) soldering technology. For this purpose, the corresponding contact surfaces of the electrical contact elements are placed in a solder pad coated with solder paste and then pushed through a soldering furnace, for example, together with the contact carrier.

[0004] However, electrical contact elements, as known from US Pat. No. 10,720,725 B2, are not suitable for absorbing the larger axial forces that can occur during pressing into the contact carrier. While socket contact elements known to the applicant from internal practice exhibit greater stability against axial forces, they sometimes have the disadvantage that the solder is sucked into the electrical contact element due to capillary forces and is thus no longer fully available for the soldering process.

[0005] The task is to provide an improved electrical contact element that allows the absorption of larger axial forces.

[0006] This object is achieved by an article having the features of claim 1.

[0007] Accordingly, an electrical contact element comprises a base body and a contact tab arranged on the base body with an (angled) region which has a contact surface designed to be soldered to a further electrical contact surface of another component, in particular a circuit board or printed circuit board. The angled region of the contact tab (having the contact surface) is angled towards the base body, starting from the base body, e.g. with respect to a main extension direction of the base body. The contact surface is angled towards the base body in such a way that it points in the direction of the further electrical contact surface, in particular the circuit board. The contact tab can be arranged, for example, at a (first) end of the base body.For example, a connection region which is designed for electrical connection to an electrical conductor can be arranged at a (second) end opposite the contact tab. The base body can then extend in an extension direction, for example, between the (first) end at which the contact tab is arranged and the opposite (second) end with the connection region. Furthermore, the contact tab can be formed integrally with the base body. For this purpose, the base body and the contact tab can initially lie in one plane during production of the electrical contact element. The contact tab can then be angled in one region. The angled region can be angled by bending the material of the contact tab with a plastic deformation of the material. Alternatively, the angled region can, for example, be pre-formed at an angle to the base body.For example, the contact tab can be substantially L-shaped in a side view. In this way, the contact tab is angled relative to the direction of extension (between the opposite ends) of the base body.

[0008] The contact surface of the angled section, which, when assembled, faces the direction of the additional electrical contact surface, serves to electrically contact the additional contact surface, in particular to electrically contact a contact surface or conductor arranged on a circuit board. For assembly, the contact surface of the angled section can be soldered to the additional electrical contact surface. For this purpose, a solder paste or adhesive can be applied to the contact surface of the angled section using a stencil and melted or cured using heat.

[0009] Furthermore, the electrical contact element comprises one or more lamellae arranged on the base body, each of which has at least one support surface, in particular facing away from the base body, for supporting the angled region, wherein the at least one support surface is connected to the base body via a curved section.

[0010] The angled region rests on the at least one support surface in order to be supported by the at least one support surface. For example, this can be achieved by bending the contact tab relative to the base body, for example by bending around the section via which the contact tab is connected to the base body. The resting of the angled region on the one or more support surfaces of the lamellae enables the angled region to be supported in such a way that even particularly large axial forces, which can occur, for example, when being pressed into a contact carrier, can be absorbed. In addition, this enables particularly simple and reliable production of a precise bend, regardless of the material used.

[0011] The one or more lamellae can be arranged at the same (first) end of the base body as the contact tab and / or formed integrally with the base body. For this purpose, the base body and the one or more lamellae can initially lie in one plane during production of the electrical contact element. During production of the electrical contact element, the region with the contact surface of the contact tab can first be bent in the direction (of the first end) of the base body. The one or more lamellae can then (each) be bent by at least a section, in particular in the direction of the angled region of the contact tab and / or a central axis of the base body. In this way, support regions emanating from the base body, in particular the first end, and having support surfaces facing away from the base body are provided.By further bending the one or more slats, the support surfaces can be bent, in particular pushed, under the angled region of the contact tab so that the angled region comes to rest on the one or more support surfaces in order to be supported by them.

[0012] By providing the contact tab with a bent portion that rests on the lamella(s), and because the lamella(s) each have a bent section, a gap between the base body and the contact tab can be reduced or even closed, preventing solder penetration due to capillary forces. This makes it possible to achieve particularly good axial support while simultaneously achieving good soldering results.

[0013] The angled region can be prestressed against the one or more lamellae. In particular, the angled region rests with prestress on the one or more lamellae. This enables particularly reliable and play-free support of the angled region of the contact tab. In particular, this prevents the angled region from springing back. This provides an electrical contact element with a particularly high capacity to absorb forces that can occur, for example, during mounting on a circuit board. In addition, the play-free, in particular gap-free support of the angled region on the one or more support surfaces of the one or more lamellae enables particularly high impermeability to liquids, such as solder.

[0014] For example, the angled region is arranged at an angle of 90° to a longitudinal axis of the base body. Alternatively or additionally, the region can be angled at an angle of 90° to an adjacent further region of the contact tab, in particular over which the contact tab is arranged on the base body.

[0015] During production of the electrical contact element, the area with the electrical contact surface of the contact tab can first be bent (or re-bent) by an angle greater than 90° (so that the bent area is then at an angle of less than 90°, for example to a longitudinal axis of the base body). By subsequently bending the one or more lamellae below the angled area, the angled area can be bent back to an angle of 90°. Advantageously, when the angled area is arranged on the support surfaces of the one or more lamellae, the angled area can be supported on the support surfaces of the one or more lamellae with a prestress corresponding to the angle.

[0016] It can be provided that at least one bevel is formed on an edge of the angled region and / or the at least one support surface. The bevels can, for example, each bevel be formed as a chamfer. This allows for particularly simple relative displacement of the angled region and the support surfaces. In particular, this allows the one or more slats to be pushed more easily under the angled region to support it.

[0017] The one or more support surfaces of different laminations can be spaced apart from one another by a smaller distance than the diameter of the base body. This enables particularly reliable support of the angled region and particularly high force absorption. For example, the one or more laminations are arranged around a longitudinal axis of the base body, with the longitudinal axis running parallel to the main extension direction of the base body. The support surfaces of the one or more laminations can then be spaced apart from the longitudinal axis of the base body by a smaller distance than the regions of the laminations over which the laminations are arranged on the base body. For example, the diameter of the angled region (and in particular of the electrical contact surface) is smaller than the diameter of the base body.Accordingly, the support surfaces can have a distance from each other that is less than the diameter of the base body in order to enable particularly reliable support.

[0018] In one example, the at least one curved section of the one or more slats is each bent about an axis parallel to a longitudinal direction of the base body. For example, the one or more sections extend along a longitudinal axis of the base body, which in particular runs parallel to the direction of extension between the opposite ends of the base body. The angled region can be arranged perpendicular to the longitudinal axis of the base body. In particular, the angled region rests perpendicularly on the one or more slats. This enables particularly efficient and reliable absorption of axially acting forces.In this way, for example, a plurality of proposed electrical contact elements can be arranged next to one another on a circuit board and electrically contacted from a side opposite the circuit board (each) via a connection element, for example by a conductor.

[0019] For example, it can be provided that the one or more slats each have two support surfaces. Alternatively or additionally, it can be provided that the one or more slats each have a C-shape.

[0020] Such a configuration of the one or more lamellae can be achieved by punching out, in particular shearing off, one or more lamellae perpendicular to the longitudinal axis of the base body during production of the electrical contact element and, in addition, cutting one or more slits parallel to the longitudinal axis of the base body into the material of the contact element to be produced. In this way, it is possible to bend the lamellae by sections that run parallel to the longitudinal axis of the base body and / or parallel to the slits. For example, two end regions of a common lamella can each be bent by such a section in the direction of the longitudinal axis of the base body and under the pre-bent, angled region of the contact tab. The lamellae produced in this way and their support surfaces are C-shaped in this example. However, other shapes are also conceivable.In one embodiment, the at least one section of the one or more slats is each bent, at least in sections, around an axis perpendicular to a longitudinal direction of the base body. For example, the one or more bent sections extend perpendicular to a longitudinal axis of the base body. For example, the section extends in an arcuate shape and / or in sections along the outer contour of the base body. In this variant, the at least one support surface can be arcuate, for example, partially circular.

[0021] During production of the electrical contact element, such a configuration of the one or more lamellae can be achieved, for example, by first having the one or more lamellae lie in one plane with the base body and the contact tab, and then cutting one or more slits into the material of the contact element to be produced in the direction of extension of the base body. Subsequently, bending the lamellae around sections running perpendicular to these slits in the direction of the longitudinal axis of the base body and subsequently bending the support surfaces thus provided below the angled region produces an exemplary electrical contact element. In this example, the slits between the lamellae then run, at least in sections, parallel to the main direction of extension of the base body in the finished state of the electrical contact element.

[0022] The base body of the electrical contact element can be designed as a hollow body. This allows for material savings and thus particularly economical production. Furthermore, it makes it particularly easy to manufacture the electrical contact element from a single piece of flat material. The hollow body design, as opposed to a planar body, also enables particularly high distribution and absorption of externally acting axial forces.

[0023] For example, the base body is cylindrical or truncated cone-shaped. This allows for particularly simple production of the proposed electrical contact element. The base body can be manufactured particularly easily from a flat piece of material by rolling.

[0024] In one example, the electrical contact element is made of a flat material, in particular sheet metal. Advantageously, the electrical contact element can be formed easily and quickly, particularly in one piece, using the bending operations described herein. This eliminates the need to join or assemble multiple components.

[0025] For example, the electrical contact element is made in one piece and / or from a resilient and / or electrically conductive material. In particular, the electrical contact element can be designed as a stamped and bent part, for example, as a bent sheet metal part. This allows for quick and easy stamping of a one-piece bent part and subsequent formation of the electrical contact element according to any configuration described herein using the bending operations described herein.

[0026] According to one aspect, a contact carrier is provided that comprises a plurality of electrical contact elements according to any embodiment described herein. Regarding the advantages, reference is made to the above information regarding the contact element.

[0027] The contact carrier can be an electrical component, for example, a surface-mounted device (SMD). The electrical component can be embodied, for example, as a passive component, such as a resistor, or as a semiconductor, such as an integrated circuit. Furthermore, the contact carrier can form a connector for electrical contacting via a mating connector (e.g., in the form of a plug).

[0028] According to a further aspect, a method for producing an electrical contact element is specified, which is designed in particular according to any embodiment described herein.

[0029] The method comprises the following steps in any desired order (alternatively in exactly the order specified): Providing a base body with a contact tab arranged on the base body and one or more lamellae arranged on the base body (e.g. by punching a metal sheet); Bending a region of the contact tab, wherein the angled region has a contact surface which is designed to be soldered to a further electrical contact surface, and wherein the region is angled starting from the base body, in particular with respect to an extension direction of the base body, towards the base body, in particular such that the contact surface is designed to point in the direction of the further electrical contact surface when the electrical contact element is mounted;Bending at least one section of the one or more slats to provide at least one support surface connected to the base body via a respective bent section, in particular for supporting the angled region, wherein the at least one support surface is bent below the angled region in such a way that the angled region at least partially rests on the at least one support surface, in particular to be supported by the one or more slats. With regard to the advantages, reference is made to the above information.

[0030] It can be provided that the angled region is plastically bent during bending in such a way that the angled region is aligned at an angle with respect to a longitudinal axis of the base body which is less than 90°.

[0031] When bending the at least one section of the one or more slats, the at least one support surface can be bent below the angled region such that the angled region is elastically bent back to an angle of 90°.

[0032] Furthermore, when bending the at least one section of the one or more slats, the at least one support surface can be bent below the angled region such that the angled region is prestressed against the one or more slats.

[0033] The concept underlying the invention will be explained in more detail below with reference to the exemplary embodiments illustrated in the figures. They show:

[0034] Fig. 1A is a perspective view of an electrical contact element according to an embodiment;

[0035] Fig. 1 B shows the electrical contact element according to Fig. 1 A in a plan view;

[0036] Fig. 1 C is a side view of the electrical contact element according to Fig. 1 A;

[0037] Fig. 1 D is a rear view of the electrical contact element according to Fig. 1 A;

[0038] Fig. 2A shows the electrical contact element according to Fig. 1A without the angled region of the contact tab; Fig. 2B shows a section of the electrical contact element according to Fig. 2A in a detailed view;

[0039] Fig. 3 shows a section of the electrical contact element according to Fig. 1 A in an unfinished state;

[0040] Figs. 4A to 4C are views of an electrical contact element according to a further embodiment;

[0041] Fig. 4D shows the electrical contact element according to Figs. 4A to 4C in a plan view;

[0042] Fig. 4E is a sectional view through the plane A—A according to Fig. 4D;

[0043] Fig. 4F shows a detailed view of a section of the electrical

[0044] Contact element according to Fig. 4E;

[0045] Fig. 4G shows a section of the electrical contact element according to Fig. 4A in an unfinished state;

[0046] Fig. 5 is a schematic representation of a contact carrier; and

[0047] Fig. 6 Process steps of a process for producing the electrical

[0048] contact element.

[0049] Figs. 1 A to 1 D show an electrical contact element 1 .

[0050] The electrical contact element 1 has a base body 10, a contact tab 11 arranged on the base body 10 and a plurality of, in this case (exactly) two, lamellae 12.

[0051] In the example shown, the base body 10 is designed as a hollow body. However, it is also conceivable for the base body to be designed as a solid body, for example as a pin. Furthermore, the base body is cylindrical (more precisely: circular cylindrical). However, shapes such as truncated cones or oval tubes are also conceivable here. The base body 10 extends in an extension direction between a first (upper) end 101A and a second (lower) end 101B. In the assembled state, the first end 101A points in the direction of a further electrical contact surface 20 to be electrically contacted (see Fig. 5). In the present case, the base body 10 extends along a longitudinal axis L (see Fig. 1D).

[0052] At the second end 101B opposite the first end 101A and the contact tab 11, a connection region 13 designed for electrical connection to an electrical conductor can be provided, as shown by way of example in dashed lines in Fig. 1C, depending on the application. The connection region 13 is illustrated in Fig. 1C by way of example by two spring elements. However, other contacting means, such as a pin, clamping elements or soldering areas, are also conceivable here. Furthermore, the base body 10 itself, as shown by the solid lines, can serve as a connection region in the form of a socket. A plug, for example, can be inserted into the socket.

[0053] The base body 10 has an edge 102 at its first end 101A. The contact tab 11 is arranged on the edge 102. In the present case, the contact tab 11 (at the edge 102) is integrally connected to the base body 10.

[0054] The contact tab 11 comprises a region 110, which is referred to below as the angled region 110, and an adjacent region 112. In the present case, as can be seen in particular in Fig. 1C, the contact tab 11 is connected to the edge 102 of the base body 10 via its adjacent region 112. The angled region 110 is angled relative to the adjacent region 112, starting from the base body 10, in this case at an angle W of 90°. In the example shown, the angled region 110 is bent by a section 113 relative to the adjacent region 112. The adjacent region 112, which can also be referred to as the connecting region, extends parallel to the longitudinal axis L of the base body 10. The section 113 has a bend. The contact tab 11 is therefore bent in section 113.

[0055] The angled region 110 (due to the bend in section 113) has an electrical contact surface 111. The electrical contact surface 111 serves to electrically contact the aforementioned further electrical contact surface 20, for example a circuit board 2 or a conductor track arranged on the circuit board 2 (see Fig. 5). The contact surface 111 is designed to be soldered to the further electrical contact surface 20. The region 110 of the contact tab 11 is angled such that the electrical contact surface 111 points in the direction of the further electrical contact surface 20 in a pre-assembled state.

[0056] In the example shown, the angled region 110 and the contact surface 111 are planar. This allows for efficient contacting and reliable soldering of the electrical contact surface 11 to another electrical contact surface.

[0057] As can be seen particularly in Figs. 2A and 2B, two slats 12 are further arranged on the edge 102 of the base body 10. In this case, the slats 12 are integrally connected to the base body 10. The slats 12 comprise one or more, in this case two, support surfaces 121.

[0058] The support surfaces 121 of the electrical contact element 1 are formed by bending the lamellae 12 by at least one, in the exemplary embodiment by two sections 122, in the direction of the central longitudinal axis L or the center of the base body 10. The support surfaces 121 face away from the base body 10 and are arranged in particular opposite the edge 102 of the base body 10. The support surfaces 121 are bent under the angled region 110 of the contact tab 11. In this way, the angled region 110 rests on the support surfaces 121 in order to be supported by them. In the exemplary embodiment, the lamellae 12 each have two support surfaces 121 that are connected to one another in one piece and are, here by way of example, C-shaped. The lamellae 12 are each connected (in one piece) to the base body 10 between the two bent sections 122.

[0059] The angled region 110 is thus arranged in regions on the support surfaces 121 of the slats 12 and, in particular, rests on the support surfaces 121 in order to be supported by the support surfaces 121 of the slats 12. The support surfaces 121 of the slats 12 expediently have a distance A (see, for example, Fig. 2B) from one another that is reduced compared to the diameter D of the base body 10 (see, for example, Fig. 1B). The support surfaces 121 are formed by two opposing wings of the respective slat 12. The wings of the slats 12 are aligned towards a common center point.

[0060] In the example shown, the angled region 110 rests with prestress on the support surfaces 121 of the lamellae 12. As can be seen from Fig. 3, this is achieved in that the angled region 110 of the contact tab 11, in an unfinished state of the electrical contact element 1, is first angled or bent by an angle relative to the longitudinal axis L of the base body 10 and / or the adjacent region 112 that is greater than 90°, i.e., after bending, it describes an angle to the longitudinal axis L that is less than 90°. In this state, the lamellae 12 are not yet in contact with the angled region 110 of the contact tab 11. Only then are the lamellae 12 bent around the sections 122 and under the angled region 110. In this case, the angled region 110 is spring-backed to an angle of 90°, particularly by the support surfaces 121. In this way, the angled region 110 is prestressed against the slats 12.

[0061] As shown in Fig. 2B, the slats 12 expediently have one or more bevels 123, in particular on the support surfaces 121, in this case one per support surface 121. The bevels 123 are designed as a chamfer. The bevels 123 are formed on an edge region of the slats 12, in this case the support surfaces 121 of the slats 12, and serve to more easily push the support surfaces 121 under the angled region 110 when the slats 12 are bent toward one another around the sections 122, and in particular to overcome the prestress of the angled region 110. The bevels 123 run obliquely to the support surfaces 121.

[0062] Alternatively or additionally, the angled region 110 may have bevels 124', particularly in an edge region (as can be seen, for example, from Fig. 4F described below).

[0063] Figs. 4A to 4F show a further embodiment of an electrical contact element 1'. The above explanations regarding the electrical contact element 1 of the first embodiment described above essentially apply to the electrical contact element 1'.

[0064] In contrast to the first embodiment, the electrical contact element 1' in this embodiment has lamellae 12', each of which comprises (precisely) one support surface 120'. The lamellae 12' are bent around a section 122', which in the example shown protrudes from the end of the base body 10 and, in particular, runs in an arcuate manner. In the example shown, each lamella 12' comprises precisely one support surface 121', which is arcuate. The section 122' of a respective lamella 12' is bent in an S-shape. The section 122' of a respective lamella 12' has a first inward bend, so that the lamellae 12' run towards one another, and a second, opposite bend, so that the lamellae 12' run parallel to one another (and to the longitudinal axis L of the base body 10) from there to their open ends (with the support surfaces 121').

[0065] As shown in the sectional view according to Figs. 4E and 4F, after bending the support surfaces 121' in the direction of the (central) longitudinal axis L of the base body 10, the support surfaces 121' of the lamellae 12' have a distance A' from one another that is reduced compared to the diameter D of the base body 10 (see Fig. 4D). In particular, the support surfaces 121' are spaced apart on the outside by a distance that corresponds to the diameter of the angled region 110 of the contact tab 11. The contact tab 11 rests on the support surfaces 121' as a cover.

[0066] Furthermore, the contact element 1' additionally has bevels 124' in an edge region of the angled region 110 of the contact tab 11. This facilitates the bending of the lamellae 12' or the support surfaces 121' below the angled region 11.

[0067] In this embodiment, the angled region 110 also rests with prestress on the support surfaces 121' of the lamellae 12'. This is achieved, as illustrated in Fig. 4G, in that the region 110 of the contact tab 11, in an unfinished state of the electrical contact element 1', is first angled or bent by an angle of more than 90° relative to the longitudinal axis L of the base body 10 and / or the adjacent region 112. In this state, the lamellae 12' are not yet in contact with the angled region 110 of the contact tab 11. Only then are the lamellae 12' bent under the angled region 110, e.g. by rolling the base body 10 into a sleeve. In the process, the angled region 110 is springed back to an angle of 90°, in particular by the support surfaces 121'. In this way, the angled area 110 is prestressed against the slats 12'.

[0068] In the examples shown, the lamellae 12, 12' of the electrical contact elements 1, 1' are each designed identically to one another. The contact tab 11 of the previously described electrical contact elements 1, 1' can be designed as a separate lamella, which, however, rests on the lamellae 12, 12' and is designed differently than the lamellae 12, 12'. The angled region 110 can be designed as a solder pad.

[0069] The electrical contact elements 1, 1' are each made of a resilient and electrically conductive material. In this case, the electrical contact elements 1, 1' are made of a flat material, for example, sheet metal. In this case, the electrical contact element 1, 1' is formed as a single piece.

[0070] For example, the respective electrical contact element 1, 1' is designed as a stamped and bent part. This allows for quick and easy stamping of a one-piece bent part and subsequent formation of the electrical contact element 1, 1' using the bending operations described herein. The electrical contact element 1, 1' can be manufactured, for example, using a stamping and rolling technique.

[0071] In the examples shown, the lamellae 12, 12' are separated from each other by slots 14, 14'. The slots 14, 14' are created during the manufacture of the electrical contact element 1, 1', in particular by cutting and / or shearing.

[0072] Due to the described designs of the electrical contact element 1, 1', the geometry tapers on the soldering side, starting from the base body 10. This is achieved, for example, by the previously described slots 14, 14' and the previously described bends of the lamellae 12, 12'.

[0073] In the examples shown, the base body 10 has a slot 15 that runs parallel to the longitudinal axis L of the base body 10. The slot 15 is created by rolling (collapsing) the starting material piece, in this case a flat material piece.

[0074] Fig. 5 shows a schematic representation of a contact carrier K with multiple electrical contact elements 1, 1'. The contact carrier K can be an electrical component, for example, a surface-mounted device (SMD). The electrical component is embodied, for example, as a connector.

[0075] The electrical contact surfaces 111 of the electrical contact elements 1, 1' can be soldered to the corresponding electrical contact surfaces 20 of the aforementioned circuit board 2. In an arrangement with the circuit board 2, at least one electrical contact element 1, 1' is soldered to the circuit board 2, specifically to one of the electrical contact surfaces 20.

[0076] Fig. 6 shows method steps of a method for producing the previously described electrical contact element 1, 1'. The method comprises: Step S1: Providing a base body 10 with a contact tab 11 arranged on the base body 10 and one or more lamellae 12, 12' arranged on the base body 10. This can comprise punching out a piece of flat material, wherein, for example, a rectangular region is formed to form the base body 10, from which the lamellae 12, 12' are cut free by slots 14, 14'.

[0077] Step S2: Bending a region 110 of the contact tab 11, wherein the angled region 110 has a contact surface 111 which is designed to be soldered to a further electrical contact surface, and wherein the region 110 is angled starting from the base body 10 with respect to the base body 10.

[0078] Step S3, which in one embodiment of the method is only carried out after step S2: Bending one or more sections 122, 122' of the one or more slats 12, 12' in order to provide support surfaces 121, 121' connected to the base body 10 via the one or more bent sections 122, 122', wherein the one or more support surfaces 121, 121' are bent below the angled region 110 in such a way that the angled region 110 comes to rest at least partially on the one or more support surfaces 121, 121' in order to be supported by the slats 12, 12'.

[0079] During bending step S2, the region 110 is bent by an angle W with respect to the longitudinal axis L of the base body 10, which angle is greater than 90°. During bending (step S3) of one of the plurality of slats 12, 12', the support surfaces 121, 121' are then bent under the bent region 110 such that the bent region 110 is resiliently bent back to an angle of 90°. In this way, the bent region 110 is prestressed against the one or more slats 12, 12'.

[0080] List of reference symbols

[0081] 1 , 1 ' Electrical contact element

[0082] 10 basic bodies

[0083] 101A, 101B End

[0084] 102 Rand

[0085] II Contact tab

[0086] 110 angled area

[0087] III electrical contact surface

[0088] 112 Area

[0089] Section 113

[0090] 12, 12' slats

[0091] 121 , 121 ' support surface

[0092] 122, 122' curved section

[0093] 123, 123' bevel

[0094] 124' bevel

[0095] 13 Connection section

[0096] 14, 14' slot

[0097] 15 slot

[0098] 2 circuit boards

[0099] 20 electrical contact surface

[0100] A, A' distance

[0101] D Diameter

[0102] K Contact carrier

[0103] L Longitudinal axis

[0104] W angle

Claims

Patent claims 1 . Electrical contact element (1 , 1 *), in particular for contacting a circuit board (2), comprising: a base body (10), - a contact tab (11) arranged on the base body (10) with an angled region (110) which has a contact surface (111) which is designed to be soldered to a further electrical contact surface (20), wherein the angled region (110) is angled from the base body (10) to the base body (10), and one or more lamellae (12, 12') arranged on the base body (10), each having at least one support surface (121, 121') on which the angled region (110) of the contact tab (11) rests, wherein the at least one support surface (121, 121') is connected to the base body (10) via a bent section (122, 122').

2. Electrical contact element (1, 1') according to claim 1, characterized in that the angled region (110) is prestressed against the one or more lamellae (12, 12').

3. Electrical contact element (1, 1') according to claim 1 or 2, characterized in that the angled region (110) is arranged at an angle (W) of 90° to a longitudinal axis (L) of the base body (10).

4. Electrical contact element (1, 1') according to one of the preceding claims, characterized in that at least one bevel (123, 123', 124') is formed on an edge of the angled region (110) and / or the at least one support surface (121, 121').

5. Electrical contact element (1, 1') according to one of the preceding claims, characterized in that the electrical contact element (1, 1') comprises a plurality of lamellae (12, 12') and the support surfaces (121, 121') of the lamellae (12, 12') have a distance (A) from one another which is reduced compared to a diameter (D) of the base body (10).

6. Electrical contact element (1) according to one of the preceding claims, characterized in that the at least one bent section (122) of the one or more slats (12) is bent about an axis parallel to a longitudinal direction of the base body (10).

7. Electrical contact element (1) according to claim 6, characterized in that the one or more lamellae (12) each have two support surfaces (121), wherein the one or more lamellae (12) are each C-shaped.

8. Electrical contact element (1 ') according to one of claims 1 to 5, characterized in that the at least one bent section (122') of the one or more lamellae (12') is each bent about an axis perpendicular to a longitudinal direction of the base body (10).

9. Electrical contact element (1 ') according to claim 8, characterized in that the at least one support surface (121 ') is arcuate.

10. Electrical contact element (1, 1') according to one of the preceding claims, characterized in that the base body (10) is designed as a hollow body.

11. Electrical contact element (1, 1') according to one of the preceding claims, characterized in that the base body (10) is cylindrical or frustoconical.

12. Electrical contact element (1, 1') according to one of the preceding claims, characterized in that the electrical contact element (1, 1') is made of a flat material, in particular of sheet metal.

13. Electrical contact element (1, 1') according to one of the preceding claims, characterized in that the electrical contact element (1, 1') is made in one piece from a spring-elastic and electrically conductive material and is designed in particular as a stamped and bent part.

14. Contact carrier (K) characterized by a plurality of electrical contact elements (1, 1'), each according to one of the preceding claims.

15. A method for producing an electrical contact element (1, 1'), which is designed in particular according to one of claims 1 to 13, comprising: Providing (S1) a base body (10) with a contact tab (11) arranged on the base body (10) and one or more lamellae (12, 12') arranged on the base body (10), Bending (S2) a region (110) of the contact tab (11) starting from the base body (10) with respect to the base body (10), wherein the angled region (110) has a contact surface (111) which is designed to be soldered to a further electrical contact surface, and Bending (S3) at least one section (122, 122') of the one or more slats (12, 12') in order to provide at least one support surface (121, 121') connected to the base body (10) via a respective bent section (122, 122'), wherein the at least one support surface (121, 121') is bent below the angled region (110) in such a way that the angled region (110) comes to bear at least partially on the at least one support surface (121, 121').

16. The method according to claim 15, characterized in that the angled region (110) is angled such that it is aligned at an angle with respect to a longitudinal axis (L) of the base body (10) which is less than 90°.

17. The method according to claim 16, characterized in that during the bending (S3) of the at least one section (122, 122') of the one or more slats (12, 12'), the at least one support surface (121, 121') is bent below the angled region (110) in such a way that the angled region (110) is springed back to an angle of 90°.

18. Method according to one of claims 15 to 17, characterized in that during bending (S3) of the at least one section (122, 122') of the one or more slats (12, 12'), the at least one support surface (121, 121') is bent below the angled region (110) in such a way that the angled region (110) is prestressed against the one or more slats (12, 12').

Images