BE1032011A1 - Electrical contact element - Google Patents

Abstract

An electrical contact element (1, 1'), in particular for contacting a circuit board (2), comprises a base body (10) and a contact tab (11) arranged on the base body (10) with an angled region (110) that has a contact surface (111) designed to be soldered to a further electrical contact surface, wherein the angled region (110) is angled starting from the base body (10). Furthermore, the electrical contact element (1, 1') comprises one or more lamellae (12, 12') arranged on the base body (10), each of which has 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 curved section (122, 122').

Description

Electrical contact element

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.

Circuit boards, also known as printed circuit boards, are regularly equipped with several electrical contact elements, which are usually arranged in groups to form electrical

Contact carriers are combined, using the Surface Mounted Device, SMD, -

Soldering technology is used. 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.

Electrical contact elements, as known from US 10,720,725 B2, are not suitable for absorbing larger axial forces that occur when pressing into the

Contact carriers may occur. The applicant is familiar with the

Although socket contact elements are more stable against axial forces, they sometimes have the disadvantage that the solder is sucked into the electrical contact element due to capillary forces and is therefore no longer fully available for the soldering process.

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

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

Accordingly, an electrical contact element comprises a base body and a

Contact tab arranged on the base body with an (angled) area that

contact surface which is designed to be connected to a further electrical

contact surface of another component, especially a circuit board or printed circuit board. The angled area of the

Contact tab is starting from the base body, e.g. with respect to a main

Extension direction of the base body, angled to the base body. The

The contact surface is angled to 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, for example, be arranged at a (first) end of the base body. At a (second) end opposite the contact tab, a connection area can be arranged, for example, which is designed for electrical connection to an electrical conductor. The base body can then, for example, be arranged between the (first) end at which the contact tab is arranged and the opposite (second) end with the connection area.

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 the manufacture of the electrical contact element.

The contact tab can then be angled in one area. The angled area can be created by bending the material of the contact tab with a plastic deformation of the

material. Alternatively, the angled area can be preformed at an angle to the base body. For example, the contact tab can be essentially L-shaped in a side view. In this way, the

Contact tab in relation to the direction of expansion (between the opposite

ends) of the base body are angled.

The contact surface of the angled area, which in the mounted state points in the direction of the further electrical contact surface, serves for the electrical contact of the further contact surface, in particular for the electrical contact of a

Contact surface or conductor track arranged on the circuit board. For assembly, the contact surface of the angled area can be soldered to the other electrical contact surface.

For this purpose, for example, a solder paste or an adhesive can be applied to the

contact surface of the angled area and melted or cured by heat.

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.

The angled area 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 a

Bending of the contact tab relative to the base body, for example by bending around the section over which the contact tab is connected to the base body. The resting of the angled area on the one or more

The support surfaces of the lamellae enable the angled area to be supported in such a way that even particularly large axial forces, which, for example, occur when pressing into a

Furthermore, this provides a particularly simple and reliable method of

Allows for precise bending.

The one or more slats may be arranged at the same (first) end of the

base body like the contact tab and/or integral with the

For this purpose, the base body and the one or more lamellae can be initially formed in a

When manufacturing the electrical contact element, the first step is to

Area with the contact surface of the contact tab in the direction (of the first end) of the

The one or more slats can then be bent (each) by at least one 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 areas extending from the base body, in particular the first end, with support surfaces facing away from the base body are provided.

By further bending the one or more lamellae, 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.

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.

The angled area can be preloaded against one or more slats. In particular, the angled area rests on one or more slats with preload. This enables a particularly reliable and backlash-free

Support of the angled area of the contact tab. Particular attention is paid to this

This prevents the angled area from springing back. This creates an electrical contact element with a particularly high capacity to absorb

Forces that may occur, for example, during assembly on a printed circuit board are provided. Furthermore, the play-free, particularly gap-free support of the angled area on the one or more support surfaces of the one or more lamellae enables particularly high impermeability to liquids such as solder.

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.

During the 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 that is greater than 90° (so that the bent area is then at an angle of less than 90°, e.g. to a longitudinal axis of the base body). By subsequent

By bending the one or more slats below the angled area, the angled area can be bent back to an angle of 90°. Advantageously, the angled area can be bent back to an angle of 90° when arranging the angled area on the support surfaces of the one or more slats with the angle corresponding to the

Preload on the support surfaces of one or more slats.

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.

For example, bevels can be designed as chamfers. This allows for particularly easy relative displacement of the angled area and the

Support surfaces are possible. In particular, this makes it easier to slide one or more slats under the angled area to support it.

The one or more support surfaces of different lamellae can have a distance from each other that is reduced compared to the diameter of the base body. This ensures particularly reliable support of the angled

area and a particularly high force absorption is possible. For example, the one or more lamellae are arranged around a longitudinal axis of the base body, wherein the longitudinal axis runs parallel to the main direction of extension of the base body. The support surfaces of the one or more lamellae can then have a smaller distance from the longitudinal axis of the base body than the areas of the

Slats over which the slats are arranged on the base body. For example, the

Diameter of the angled area (and especially the electrical

contact area) is smaller than the diameter of the base body. Accordingly, the support surfaces can have a distance from each other that is smaller than the

Diameter of the base body to enable particularly reliable support. 5

In one example, the at least one curved portion of the one or more

Slats each around a direction parallel to a longitudinal extension direction of the base body

axis. For example, the one or more sections extend along a longitudinal axis of the base body, which is in particular parallel to the

The angled area can be perpendicular to the longitudinal axis of the

base body. In particular, the angled area lies perpendicularly on the one or more lamellae. This enables particularly efficient and reliable absorption of axially acting forces. In this way, for example, a large number of proposed electrical contact elements can be arranged next to one another on a circuit board and

Each side can be electrically contacted via a connecting element, for example, a conductor. For example, it can be provided that the one or more lamellae each have two supporting surfaces. Alternatively or additionally, it can be provided that the one or more lamellae each have a C-shape.

Such a design of the one or more lamellae can be achieved by manufacturing the electrical contact element perpendicular to the

One or more lamellae are punched out, in particular sheared off, along the longitudinal axis of the base body, and one or more slots are cut into the material of the contact element to be produced parallel to the longitudinal axis of the base body. In this way, the lamellae can be bent by sections that run parallel to the longitudinal axis of the base body and/or parallel to the slots. 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 area of the contact tab. The resulting lamellae and their supporting surfaces are C-shaped in this example. However, other

Forms conceivable.

In one embodiment, the at least one section of the one or more slats is in each case at least partially bent by a

The one or more curved sections are bent perpendicular to the axis perpendicular to the longitudinal direction of the base body. For example, the one or more curved sections run perpendicular to a

Longitudinal axis of the base body. For example, the section runs in an arc shape and/or in sections along the outer contour of the base body. In this variant, the at least one support surface can be arc-shaped, for example, partially circular.

During the manufacture of the electrical contact element, such a configuration of the one or more lamellae can be achieved, for example, by firstly bonding the one or more lamellae to the base body and the contact tab in a

plane and in the direction of extension of the base body one or more

Slots are cut into the material of the contact element to be manufactured.

Subsequent bending of the slats around perpendicular to these slots

Sections along the longitudinal axis of the base body and subsequent bending of the support surfaces thus provided below the angled area create an exemplary electrical contact element. In this example, the slots between the lamellae then run, at least in sections, parallel to the main extension direction of the base body in the finished state of the electrical contact element.

The base body of the electrical contact element can be designed as a hollow body.

This allows for material savings and thus a particularly economical

Production. This also makes it possible to manufacture the electrical contact element particularly easily from a single piece of flat material. The hollow body design, compared to a planar body, also enables a particularly high distribution and absorption of externally acting axial forces.

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 produced particularly easily from a piece of flat material by

rolls are produced.

In one example, the electrical contact element is made of a flat material, in particular of sheet metal. Advantageously, the electrical contact element can be formed easily and quickly, in particular in one piece, by the bending operations described herein. Joining or assembling several

This means that components can be omitted.

For example, the electrical contact element is made of one piece and/or is made of 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

Bending part and then forming the electrical contact element according to any embodiment described herein using the bending operations described herein.

According to one aspect, a contact carrier is provided which has a plurality of electrical

Contact elements according to any embodiment described herein.

Regarding the advantages, reference is made to the above information on the contact element.

The contact carrier can be an electrical component, for example a surface mounted

Device, SMD, a so-called surface-mounted component. The electrical component can be designed, for example, as a passive component, such as a resistor, but also as a semiconductor, such as an integrated circuit. Furthermore, the contact carrier can have a

Connectors for electrical contacting by means of a mating connector (e.g. in

shape of a plug).

According to a further aspect, a method for producing an electrical

contact element, which in particular according to any one of the methods described herein

design is formed.

The method comprises the following steps in any 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 of a

Area of the contact tab, wherein the angled area has a contact surface which is designed to be soldered to a further electrical contact surface, and wherein the area, starting from the base body, in particular with respect to a

Extension direction of the base body, is angled 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 lamellae in order to form at least one section connected to the base body via a respective bent section

Support surface, in particular for supporting the angled area, wherein the at least one support surface is bent under the angled area in such a way that the angled area is at least partially on the at least one

Support surface comes into contact, in particular in order to be able to use one or more

slats. Regarding the advantages, please refer to the above information

reference is made.

It can be provided that the angled area is plastically bent during bending in such a way that the angled area is at an angle with respect to a

longitudinal axis of the base body, which is less than 90°.

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°.

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.

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

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

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

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

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

Fig. 2A the electrical contact element according to Fig. 1A without the angled

Area of the contact tab;

Fig. 2B shows a section of the electrical contact element according to Fig. 2A in a detailed view;

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

Fig. 4A to 4C views of an electrical contact element according to another

embodiment;

Fig. 4D the electrical contact element according to Figs. 4A to 4C in a

top view;

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

Fig. 4F a detailed view of a section of the electrical

Contact element according to Fig. 4E;

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

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

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

contact element.

Figs. 1A to 1D show an electrical contact element 1.

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

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). Shapes such as truncated cones or oval tubes are also conceivable.

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 toward 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).

At the second end opposite the first end 101A and the contact tab 11

End 101B can, as shown in Fig. 1C by way of example in dashed lines, depending on

In this case, a connection area 13 may be provided for electrical

connection with an electrical conductor. The connection area 13 is in

Fig. 1C is illustrated by two spring elements. However, other contacting means, such as a pin, clamping elements or

Soldering areas are conceivable. Furthermore, the base body 10 itself, as shown by the solid lines, can serve as a connection area in the form of a socket. A plug, for example, can be inserted into the socket.

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.

The contact tab 11 comprises an area 110, which is referred to below as an angled

Area 110, and an adjacent area 112. In the present case, as can be seen in particular in Fig. 1C, the contact tab 11 is arranged above its adjacent

Area 112 is connected to the edge 102 of the base body 10. The angled area 110 is angled relative to the adjacent area 112, starting from the base body 10, in this case at an angle W of 90°. In the example shown, the angled area 110 is bent by a section 113 relative to the adjacent area 112. The adjacent area 112, which can also be referred to as the connecting area, extends parallel to the longitudinal axis L of the base body 10. Section 113 has a bend. The contact tab 11 is therefore bent in section 113.

The angled area 110 (due to the bend in section 113) has an electrical

Contact surface 111. The electrical contact surface 111 serves for electrical

Contacting the already mentioned 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 connected to the further electrical

contact surface 20. The area 110 of the contact tab 11 is angled in such a way that the electrical contact surface 111 in a pre-assembly state in

towards the further electrical contact surface 20.

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.

As can be seen particularly in Figs. 2A and 2B, two slats 12 are further arranged on the edge 102 of the base body. 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.

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 are facing 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 which 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) with the

Base body 10 connected.

The angled area 110 is thus partially on the support surfaces 121 of the

Lamellas 12 and rests in particular on the support surfaces 121 in order to be

Support surfaces 121 of the slats 12. The

Support surfaces 121 of the lamellae 12 have a distance A (see e.g. Fig. 2B) to each other which is reduced compared to the diameter D of the base body 10 (see e.g. Fig. 1B).

Support surfaces 121 are formed by two opposing wings of the respective slat 12. The wings of the slats 12 are aligned toward a common center point.

In the example shown, the angled area 110 is pre-stressed on the

Support surfaces 121 of the lamellae 12. This is achieved, as can be seen from Fig. 3, by the angled area 110 of the contact tab 11 being in an unfinished

State of the electrical contact element 1 initially by an angle relative to

Longitudinal axis L of the base body 10 and or the adjacent area 112 is angled or bent which is greater than 90°, i.e. after bending an angle to

longitudinal axis L, which is less than 90°. In this state, the lamellae 12 are not yet in contact with the angled area 110 of the contact tab 11. Only then are the lamellae 12 bent around the sections 122 and under the angled

Area 110 is bent. The angled area 110 is bent, in particular by the

Support surfaces 121, spring back to an angle of 90°. In this way, the angled area 110 is prestressed against the slats 12.

Advantageously, the slats 12, as shown in Fig. 2B, in particular at the

Support surfaces 121, one or more bevels 123, in this case one per

support surface 121. The bevels 123 are designed as chamfers. The

Bevels 123 are provided on an edge region of the slats 12, in this case the

Support surfaces 121 of the slats 12 are formed 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.

Alternatively or additionally, the angled region 110, in particular in a

Edge area, bevels 124° (as can be seen, for example, in Fig. 4F described below).

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°.

In contrast to the first embodiment, the electrical contact element 1° in this embodiment has lamellae 12°, each of which comprises (exactly) a support surface 120'. The lamellae 12° are bent around a section 122', which in the illustrated

Example, protrudes from the base body 10 at the end and is particularly curved. In the example shown, each lamella 12' comprises exactly one support surface 121', which is curved. The section 122' of a respective lamella 12° is bent in an S-shape.

Section 122° of a respective slat 12° has a first bend inwards so that the slats 12° run towards each other, and a second, opposite

bend so that the slats are 12° from there to their open ends (with the

Support surfaces 121°) run parallel to each other (and to the longitudinal axis L of the base body 10).

As shown in the sectional view according to Fig. 4E and 4F, the support surfaces 121' of the

After bending the support surfaces 121' in the direction of the (central) longitudinal axis L of the base body 10, the lamellae have a distance A' from each other that is reduced compared to the diameter D of the base body 10 (see Fig. 4D). In particular, the

The support surfaces 121' are spaced apart on the outside by a distance corresponding 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.

Furthermore, the contact element 1° has additional bevels 124' in an edge region of the angled region 110 of the contact tab 11. This facilitates the bending of the

Slats 12' or the support surfaces 121' under the angled area 11.

The angled area 110 in this version is also

Prestressing on the support surfaces 121' of the lamellae 12'. This is achieved, as illustrated in Fig. 4G, by the region 110 of the contact tab 11 in an unfinished state of the electrical contact element 1° being initially angled or bent by an angle relative to the longitudinal axis L of the base body 10 and/or the adjacent region 112, which angle is more than 90°. In this state, the

Slats 12° not yet in contact with the angled area 110 of the

Contact tab 11. Only then are the slats 12‘ placed under the angled

Area 110 is bent, e.g. by rolling the base body 10 into a sleeve. In this case, the angled area 110 is bent, in particular by the support surfaces 121', onto a

Angle of 90°. In this way, the angled area 110 is pre-tensioned against the slats by 12°.

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 configured differently than the lamellae 12, 12°. The angled region 110 can be designed as a solder pad.

The electrical contact elements 1, 1° are each made of a spring-elastic and electrically conductive material.

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.

For example, the respective electrical contact element 1, 1° is designed as a stamped and bent part. This allows for quick and easy punching of a one-piece

Bending part and subsequent formation of the electrical contact element 1, 1° under

Application of the bending operations described herein. The electrical contact element 1.1° can be manufactured, for example, using a stamping and rolling technique.

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.

Due to the described configurations 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°.

In the examples shown, the base body 10 has a slot 15 which is parallel to the

Longitudinal axis L of the base body 10. The slot 15 is created by rolling the starting material piece, in this case a flat material piece.

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.

The electrical contact surfaces 111 of the electrical contact elements 1, 1° can be soldered to the corresponding electrical contact surfaces 20 of the circuit board 2 already mentioned.

In an arrangement with the board 2, at least one electrical

Contact element 1, 1° soldered to the board 2, specifically to one of the electrical

Contact surfaces 20.

Fig. 6 shows process 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 may involve punching out a piece of flat material, for example, forming a rectangular area to form the base body 10, from which the lamellae 12, 12' are cut free through slots 14, 14'.

Step S2: Bending of 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 from the base body 10 with respect to the base body 10.

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 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° to be supported.

During the 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 is greater than 90°.

Bending (step S3) of one of the plurality of slats 12, 12°, the support surfaces 121, 121 are then bent under the angled region 110 in such a way that the angled region 110 is resiliently bent back to an angle of 90°.

In this way, the angled portion 110 is pressed against the one or more

Slats 12, pre-tensioned at 12°.

List of reference symbols 1, 1° Electrical contact element 10 Base body 101A, 101B End 102 Edge 11 Contact tab 110 Angled area 111 Electrical contact surface 112 Area 113 Section 12, 12° Blades 121, 121 Support surface 122, 122° Bent section 123, 123 Bevel 124 Bevel 13 Connection section 14, 14° Slot 15 Slot 2 Circuit board 20 Electrical contact surface

A, A' distance

D Diameter

K contact carrier

L Longitudinal axis

W angle

Claims (18)

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 lamellae (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 lamellae (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 under the angled region (110) in such a way that the angled region (110) comes to rest 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 under the angled region (110) in such a way that the angled region (110) is springed back to an angle of 90°. 18. The method according to any one of claims 15 to 17, 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 prestressed against the one or more slats (12, 12°).