WO2021116327A1

WO2021116327A1 - Leadframe for wire components having slot structure

Info

Publication number: WO2021116327A1
Application number: PCT/EP2020/085609
Authority: WO
Inventors: Elmar Schaper; Frank DÖLLERER
Original assignee: Phoenix Contact Gmbh & Co.Kg
Priority date: 2019-12-13
Filing date: 2020-12-10
Publication date: 2021-06-17
Also published as: DE102019134369A1

Abstract

The invention relates to an electrical assembly having a wired electrical component with at least two wire contacts, a punch-grid part made of metal material for establishing an electrical connection between at least one wire contact of the wired component and additional electrical connections or functional elements of the assembly, wherein the punch-grid part has a base element and contact tabs arranged thereon for establishing the electrical connection to the at least two wire contacts of the wired component, wherein the contact tabs are resiliently arranged on the base element and arranged such that they form at least one first and one second receptacle region, and wherein the receptacle regions are designed such that at least one of the wire contacts of the wired component can be placed in the receptacle region and held in the receptacle region by the contact tabs.

Description

Leadframe for wire components with a backdrop structure

description

Field of invention

The present disclosure relates to an electrical assembly having a wired

Component.

Background and general description of the invention

In industrial, mass-produced electrical assemblies in which only a small number of electronic components are used, which typically have two or more connections, leadframes are regularly used. Such a punched grid part is in the raw state a strip material, which is then shaped or brought into an operational state through various punchings, bends and / or nesting.

There are various possibilities for connecting a lead frame part to an electronic wired component - for example an electrical resistor, capacitor, diode. For example, these can be plugged, soldered or welded or connected using insulation displacement technology.

The aforementioned connection techniques have in common that the wire contacts of the wired components are heated, cut, squeezed or otherwise acted on the wire contacts so that they experience a mechanical change.

In order to be able to save further costs in this cost-sensitive mass production area, creative ideas are required, because the area is subject to constant change and further development.

Against this background, the present invention has set itself the task of being able to provide electrical assemblies which can be manufactured even more cheaply. In particular, the aim of the development is to be able to use even cheaper electrical or electronic components which, if necessary, cannot be contacted with the conventional connection techniques mentioned at the beginning.

The present invention is also able to fulfill the partial aspect of providing designs that can be used and equipped, particularly in the case of very narrow designs. Finally, the present invention has set itself the task of in a cost-sensitive environment To further reduce the production costs of electronic components while increasing the durability of the product.

It would be a possibility of further saving costs if wire contacts of wired components could be used, which are no longer made of full copper.

There are cheaper components with wire contacts that have a coating. So no pure, i.e. high-quality copper is used, but instead, for example, steel with a coating of copper and a layer of tin. In the case of such components, however, insulation displacement technology cannot be used, for example, since the copper coating with its tin substructure is cut and corrosion can take place unchecked on the steel when exposed to moisture. The same applies mutatis mutandis to sharp-edged squeezing or welding.

The object is achieved by the subject matter of the independent claims. Dependent claims fulfill further partial aspects of the present task.

An electrical assembly according to the invention has a wired electrical component with at least two wire contacts. A wide variety of variations of such a wired electrical component is known. For example, resistors, capacitors or diodes or even transistors and microprocessors with so-called "legs" have been manufactured and sold for decades, in which the wire contacts can be simply plugged onto printed circuit boards, or soldered or welded to contacts. Due to the cost-sensitive approach in this mass market, it may no longer be possible with newly manufactured wired electrical components to use them for welding or for pinching without damaging the protective layer on the wire contact.

The electrical assembly according to the invention therefore has a stamped grid part which is typically made of metal and which serves to establish an electrical connection between the at least two wire contacts of the wired component and other functional elements of the assembly. The lead frame part is therefore made of a metal material, for example and because of the costs mostly steel or ferrous metal material is used. In other words, the wired electrical component is contacted on the lead frame part, so that the electrical component can be connected to other functional elements or electrical connections. The lead frame part has a base element and contact tongues arranged thereon. The contact tongues are prepared for establishing the electrical connection with the at least two wire contacts of the wired component. The contact tongues are arranged on the base element so that they form at least a first and a second receiving area. The respective receiving area is formed in particular between a part of the contact tongues. In other words, some of the contact tongues are grouped around the first receiving area, and a further part of the contact tongues are grouped around the second receiving area.

For example, the contact tongues on the base element can be resilient, i.e. if the contact tongues are punched out in one piece with the base element, in particular from metal material, then the sheet metal will have a slightly resilient effect. However, this is only optional. The wire can press against the contact tongues solely due to its inherent stability and the spring effect caused thereby and thus be held in the contact area. The wire contact is therefore preferably resiliently in a serpentine shape in the link structure or in the receiving area. The wired component is then clamped in the receiving area by the wire contact against the contact tongues of the contact area

The receiving areas are designed in such a way that at least one of the wire contacts of the wired component can be inserted into the receiving area and is held in the receiving area by the contact tongues. For example, the wire contact is arranged between the contact tongues or arranged around the contact tongues that the wired electrical component is held as a whole by the contact tongues.

In particular, the contact tongues hold the wire contact by applying a clamping force to the wire contact in the receiving area. For example, the contact tongues clamp the wire contact or part of the wire contact or the part of the wire contact that is arranged in the receiving area in the receiving area.

At least one of the contact tongues preferably has a latching lug, so that in particular the wire contact is held by the latching lug in the receiving area. The latch can be arranged so that the wire contact snaps over the latch when the wired electrical component is inserted into the receiving area and the wire contact is held in its shape by the spring force of the metal material used in the wire contact and does not snap back over the latch by itself . Rather, practice thus the locking lug exerts a holding force on the wire contact, so that the wire contact remains in the receiving position.

The wire contact of the wired component therefore preferably has a stiffness, wherein the wire contact can be latched in the receiving area if the wire contact is brought into a latched position against the stiffness of the wire contact past the latching lug.

If the wire contacts of the wired component have rigidity, the wire contact can be clamped between the contact tongues if the wire contact is brought into a clamping position against its rigidity between the contact tongues.

The contact tongues of the lead frame part are bent away from the base element, for example. In particular, the contact tongues are arranged vertically or almost vertically on the base element, that is to say for example at an angle of 90 ° +/- 5 ° on the base element. Any radii that are necessary from the punching that do not produce an exactly straight edge are included in this angular relationship.

A receiving area is preferably formed by the contact tongues surrounding the receiving area. For example, a receiving area is formed by at least three contact tongues which are arranged around the receiving area.

The electrical assembly can be designed to be received in an electrically insulating housing, such as, for example, in a base terminal. The base element can be connected to the housing. For example, the base element can be overmolded using an injection molding process and the housing can be produced in one piece around the base element. It is also useful to plug the housing around the electrical assembly.

In one embodiment, at least one of the wire contacts of the electrical component has length compensation to compensate for different length expansion, for example through thermal elongation. Such a length compensation can be made possible in a simple form by introducing an S-shape into the wire contact. A length compensation can also be realized by a U-shape or a coiled spring.

The contact tongues can have a curvature on the side facing the wire contact, that is to say on the side facing the receiving area. For example, the contact tongues on the side facing the receiving area are round with, for example, one certain radius, whereby the wire contact can also be bent around the curvature of the contact tongues.

The wire contact of the electrical assembly has, in particular, an iron core and a coating applied to the iron core. The coating can comprise tin and / or copper, preferably initially a copper layer on the iron wire and a tin layer arranged thereon.

The contact tongue can have a bearing surface, the bearing surface in particular having a radius which corresponds to the radius of the wire contact to be used. In other words, the contact surface on the contact tongue is shaped in such a way that the wire contact to be inserted rests against the contact surface with the largest possible surface, for example in order to improve the intensity of the electrical contact.

The contact tongue can also have an insertion aid, so that the wire contact can slide along the insertion aid into the receiving area or can be pressed along there. The wire contact automatically moves into the installed position by being pressed along the insertion aid, whereby the wire contact can be prevented from breaking out of the insertion direction.

In the receiving area, the wire contact presses in particular resiliently against the contact tongues of the lead frame part, so that at the same time good electrical contact between the wire contact and the contact tongues and a resilient mechanical clamping of the wire contact against the contact tongues can take place.

The assembly has, in particular, two receiving areas, the receiving areas being arranged on opposite sides to one another with the electrical component in between. Alternatively, in the event that the assembly has two receiving areas, the arrangement can take place in such a way that the receiving areas are arranged next to one another. In the case of the juxtaposition of the two receiving areas, for example, one of the two wire contacts is bent by 180 °, or both wire contacts are each bent by 90 °, with any mixing angle between the two wire contacts being of course also possible. Because of the machine production, bending of only one wire contact is preferred, this wire contact then being bent by 180 °.

The wire contact or the wire contacts form or form a straight line with the electrical component before being inserted into the receiving area. That is, the wire contact together with the electrical component on which the wire contact is attached or arranged has a common straight line or axis or insertion axis which can be placed in an imaginary way, for example, centrally through the wire contact as well as through the electrical component. The straight line or axis of insertion therefore goes through the wire contact or contacts and the electrical component. On the other hand, the insertion axis can also only pass through the straight, essentially rod-shaped wire contact, which is straight for insertion, but can also be angled from the electrical component.

After being inserted into the receiving area, the wire contact or the wire contacts are curved in a serpentine manner around the straight line or the axis of insertion. In other words, the wire contact inserted into the receiving area is bent in the receiving area. The wire contact can be partially wound around the contact tongues in the receiving area. Twisting also represents bending of the wire contact. The bending of the wire contact can be flexible or reversible, so that the wire contact inherently has a restoring force in the straight line, and without the contact to the wire contacts it would reshape it straight or almost straight. The wire contact can therefore also be removed and reinserted in a preferred manner. In a preferred embodiment, the wire contact in the receiving area is bent around the contact tab or tabs, for example bent in a serpentine manner. The section of the wire contact inserted into the receiving area has a shape which deviates from the insertion axis, i.e. is bent away from the insertion axis. The snake shape can also be described as an S shape or W shape.

The wire contact is, for example, less than two thirds of the thickness of the wire contact bent out of the insertion axis when it is inserted into the receiving area. For example, the wire contact can be bent out of the insertion axis by less than half the thickness of the wire contact in the receiving area. More preferably, the wire contact nestles against the contact tongues, in particular without having a cutting effect on the wire contact. The electrical contact between wire contact and contact tongues is preferably established by pressing against the contact tongues, the pressing being based on the inherent restoring force of the metal material of the wire contact. A cutting contact is not required. This can increase the service life of the electrical component and ensure that it is permanently clamped.

The contact tongues of a receiving area are preferably arranged alternately on opposite sides of the receiving area. That means that the Contact tongues of a receiving area in the longitudinal direction of the wire contact to be inserted alternate on the side of the wire contact, i.e. when viewed in the direction of the electrical component, first a contact tongue on a first side of the wire contact, then at a distance a contact tongue on the second side of the wire contact and then again at a distance a contact tongue again on the first side of the wire contact. The distance from one contact tongue to the next contact tongue can, for example, correspond to the diameter of a contact tongue. The distance between two contact tongues can also be smaller than the diameter of a contact tongue, for example half the diameter of the contact tongue. In particular, the distance between the contact tongues of a receiving area corresponds to the diameter of the wire contact to be used or is slightly smaller than the diameter of the wire contact to be used.

Along the longitudinal extent of the receiving area - that is the direction of extent in which the insertion axis of the wire component also points - contact tongues are arranged, for example, alternating with one another. If the distance between two contact tongues arranged on the same side of the contact area corresponds, for example, to 3 wire diameters, then on this side of the contact area the contact tongues measured in the direction of extension can be arranged at 0, 3, 6 wire diameters, on the opposite side at 1.5, 4.5 and 7.5 wire diameters. One side of the contact area relates to the arrangement towards the center, the wire component to be inserted being inserted along the center, for example. A contact tongue forms a narrow point for the wire component when it is inserted, at which point the wire has to move away from the contact tongue.

In this case, opposite a contact tongue, there is no contact tongue or a free space, so that the wire component can move away from the contact tongue into the free space. Free space and contact tongue alternate with one another, preferably asymmetrically or alternately on the two opposite sides of the contact area along the insertion axis of the wire component. At one position of the insertion axis, a contact tongue is always only arranged on one side of the receiving area and a free space is provided on the opposite side, so that the wire component can escape into the respective free space. The receiving area has a center, ie an imaginary line that goes through the electrical component to be inserted and through the receiving area, the contact tongues being spaced from the center less than half the diameter of the wire contact to be inserted. For example, the imaginary center line does not go through the contact tongues of a receiving area, for example the imaginary center line just touches all of the contact tongues of a receiving area tangentially. Depending on the requirements, the contact tongues can be arranged in such a way that the remaining straight area around the center line is thinner than the wire contact of the electrical component to be used. In this case, the electrical wire contact to be inserted is bent when it is pressed into the receiving area, ie in particular bent around the contact tongues of the receiving area.

The assembly can preferably be surrounded by a potting compound.

The invention also includes an arrangement, in particular a base terminal, which comprises an electrical assembly as described above.

The invention is explained in more detail below using exemplary embodiments and with reference to the figures, with identical and similar elements in some cases being provided with the same reference symbols and the features of the various exemplary embodiments being able to be combined with one another

Abbreviation of the figures

Show it:

Figure 1 shows a first embodiment of the invention,

Figure 2 shows a second embodiment of the invention,

3a to d show an example of the introduction of a wire contact into a contact tongue, FIG. 4 shows an embodiment of the invention in a side view,

5 shows a further embodiment of the invention,

6 shows the embodiment of FIG. 5 in a top view,

7a and 7b further examples of the design of the contact tongues.

Detailed description of the designs Referring to FIG. 1, a first embodiment of the invention is shown, an electrical component 7 with its wire contacts 6 being inserted into a “link guide” and twisted against the conductive contact tongues 2, 3, 4 due to its own rigidity. The contact tongues or contact pieces 2, 3, 4 enable soft contacting of the connecting wire 6 on the leadframe without sharp edges and thus without damaging the wire or the coating on the wire. After assembly, the wire contact 6 lies in a serpentine shape in the receiving area 35.

In this embodiment, the electrical component 7 has two wire contacts 6, 6 a, which are arranged on the electrical component 7 to the side of the electrical component. Each wire contact 6, 6a is guided into its own receiving area 35, 35a, so that each wire contact 6, 6a can be held alone in a receiving area. Separate electrical contacting of the two electrical wire contacts 6, 6a can thus take place. In this example, the wire contact 6 has an S-lay 5, which can be used as a length compensation. A change in length of the wire contacts 6, 6a also takes place during the assembly of the electrical component 7, since the twisting of the electrical contacts 6, 6a in the receiving areas 35, 35a shortens the wire contacts 6, 6a and thus affects the overall length 21 of the electrical Component 7 takes place.

The receiving area 35 of the example in FIG. 1 has four contact tongues 2, 3, 4, 4a. The first wire contact 6 is clamped by the four contact tongues 2, 3, 4, 4a in such a way that the wire contact no longer exits from the receiving area 35 due to the inherent rigidity of the metal material used in the wire contact 6, since the wire contact 6 is clamped between the contact tongues 2, 3, 4, 4a is held. In other words, the wire contact 6 is held by the contact tongues 2, 3, 4, 4a of the wire grid part 50, the wire contact 6a is held by the contact tongues 2, 3, 4, 4a of the wire grid part 52.

In Figure 1, a center line 37 is sketched, wherein in Figure 1 the distance between the contact tongues 2, 3, 4, 4a in the receiving area 35 to the center line 37 is smaller than the shown diameter of the wire contact 6. Due to the smaller distance between the contact tongues 2, 3, 4, 4a to the center line 37 compared to the diameter of the wire contact 6, the wire contact 6 is automatically forced to make an evasive movement when it is inserted into the receiving area 35. By cleverly arranging the contact tongues 2, 3, 4, 4a, the evasive action of the wire contact 6 on the contact tongues 2, 3, 4, 4a occurs automatically when the wire contact 6 enters the receiving area 35 io is pushed in. For example, the deflection of the wire contact 6, 6a takes place in a plane which runs parallel to the main direction of extent of the respective base element 1, 10. In this example, the receiving area 35a is arranged mirror-symmetrically to the receiving area 35.

FIG. 2 shows a further embodiment of the invention, the two receiving areas 35, 35a being arranged on one side of the electrical component 7. In this example, the electrical conductor 6a is bent by 180 ° in order to be able to be inserted into the receiving field 35a. In this example, no length compensation piece 5 is necessary, since a potential change in length of the wire contacts 6, 6a in this case has no influence on the tension between the two receiving areas 35, 35a. The electrical contact 6 is held in the receiving area 35 by four contact tongues 2, 3, 4, 4a, for example by applying a clamping force to the wire contact 6. Thus, no soldering, welding or sharp-edged squeezing of the wire is necessary. Rather, a complete electrical contact takes place through the electrical contact of the wire contact 6 with the contact tongues 2, 3, 4, 4a. The same applies to the second wire contact 6a in the second receiving area 35a.

FIGS. 3a to 3c show the introduction of a wire contact 6 into a latching position on a contact tongue 4 in a detailed view. A wire contact 6 has a steel core inside, which is encased by a copper layer. The tin layer 13, which ensures better electrical contact and a rust protection function for the iron core, is arranged again on the copper layer. The wire 6 is intended to be inserted from above in the illustration in FIG. 3 a against a contact surface 15 of the contact tongue 4. For this purpose, the wire contact 6 is first of all to the insertion bevel 12, i. H. attached to the insertion aid 12, so that the wire contact 6 can no longer emerge sideways from the side guide of the receiving area 35. In contrast, FIG. 3b shows the wire contact 6 inserted completely into the latching position in the receiving area 35. The wire contact 6 is held in the latching position by the latching lug 16 so that the wire 6 can no longer exit to the side or upward from the receiving area 35.

FIG. 3c shows an alternative embodiment without a locking lug, the contact tongue 4 having a sliding area 18 on which the wire contact 6 can slide into the receiving area 35. With a suitable choice of the angle of the sliding area 18, together with the spacing from one contact tongue to the next contact tongue 2, 3, 4, 4a and due to the spring force of the wire contact 6, a clamping force is generated in the receiving area 35, which holds the wire contact 6 securely in the clamped position on the receiving area 35 without the additional latching lug 16 possibly being required.

FIG. 3d shows the example of FIG. 3b with an inserted wire 6 in the receiving area, a second contact tongue 3 being shown, which is arranged opposite the contact tongue 4 in the viewing direction of the wire. It is clear from FIG. 4 how the wire 6 is arranged in the receiving area 35 and is clamped between the contact tongues 2, 3, 4, 4a.

FIG. 4 shows a side view of a device according to the invention in which a wired component 7 with two wire contacts 6, 6a is inserted. The wire contact 6 is clamped by contact tongues 2, 3, 4, 4a on the receiving area 35 in such a way that the wire does not leave the receiving area 35 without external action. The same applies to the receiving area 35a opposite the receiving area 35, in which the wire contact 6a is clamped. In this design, the wired component can typically be inserted into the assembly from above, which can be advantageous, for example, when the assembly is used in tight spaces and walls or other components are arranged on the side so that access is only possible from above .

Fig. 5 shows an alternative design of the invention, wherein the arrangement corresponds to the idea described above according to the basic principle and allows an installation rotated by 90 °. The serpentine bracing of the wire contact 26, 26a with respect to the contact area 35, 35a results in this design from one side - for example in a plan view of the end of the wire contact 22 - downwards and upwards, i.e. the deflection of the wire contact 26, 26a takes place in a plane perpendicular to the main direction of extent of the respective base element 1, 10. The wired component 7 is inserted with its wire contacts 26, 26a from one side between the two housing walls 8, 9. The wire contacts 26, 26a wind around the contact tongues 2, 3, 4 of the respective contact area 35 or 35a. For example, they “snap” into the contact area 35 or 35a. The example in FIG. 5 is designed in such a way that the wired component 7 is introduced from above in the illustration of the paper plane in FIG. 5.

In this example, the two contact areas 35 and 35a are constructed with mirror symmetry. All references and reference signs to the contact area 35 are therefore also valid for the contact area 35a. The contact areas 35 and 35a are explained with reference to the contact area 35. The contact area 35 (and, in a corresponding application, the contact area 35a) is formed by the contact tongues 2, 3, 4 which surround the contact area 35. The contact tongue 2 has a connection contact carrier 23 which connects the contact tongue 2 to the base element 1. The wire contact 26 rests against a contact head 27 of the contact tongue 2, the wire contact 26 being pushed over the contact head 27 in this example and bent into the rear grip 28. The contact tongue 3 is not gripped from behind, rather the wire contact 26 can slide in directly here and rest against the contact head 29. The contact tongue 3 also has the contact socket 24, which is connected to the base element 1.

The wire contact 26 is also pushed over the contact head 31 of the contact tongue 4 and snapped into the rear grip 32 so that the wire contact 26 rests against the contact head 31. The wire contact 26 is thus clamped between the contact heads 27, 29, 31 due to its residual internal stress and presses against the contact tongues 2, 3, 4 or against the respective contact heads 27, 29, 31.

If the base element 1 is preferably formed in one piece together with the contact tongues 2, 3, 4 and is more preferably provided as a punched grid part, the aforementioned divisions of a contact tongue 2, 3, 4, for example the contact tongue 2 in contact carrier 23, contact head 27 and rear grip 28 shows a functional division of the one-piece overall component.

FIG. 6 shows the embodiment of FIG. 5 in a top view. The wire contact 26 is held securely in the receiving area 35 by bracing against the contact heads 27, 29, 31. The same applies to the mirror-symmetrically arranged wire contact 26a in the receiving area 35a. In this straight arrangement, the first wire contact 26 has a length compensation 5, here in the form of an S-run.

Referring to FIG. 7a, a further design of a contact tongue 2 is shown, such as can be used, for example, in the embodiment of FIGS. 5 or 6. The wire contact 26 is pressed against the contact head 27 by its inherent internal stress, which is built up when the wire contact 26 is inserted into the contact area 35, whereby the electrical contact with the contact tongue 2 is established and at the same time the wire contact 26 is held in the receiving area 35. If the wire contact 26 is introduced from above in the illustration in FIG. 7, it will be pushed over, for example, over the rear grip 28 in order to reach its installation position in the contact area 35. Fig. 7b shows a further embodiment of the contact tongue 2, 3, 4 as it can be used in all proposed designs. For example, the embodiment of FIG. 7b can be used as contact tongue 3 in the embodiment of FIGS. 5 or 6 together with the embodiment of contact tongues 2 and 4 according to FIG. 7a. The wire contact 26 is pressed against the contact base 24 by its inherent internal stress, which arises when the wire contact 26 is inserted into the contact area 35, whereby an electrical contact with the same on the one hand and the mechanical restraint in the contact area 35 on the other hand is achieved.

With the device shown here, a wired component can be used in a simple manner without the need for soldering, welding or pressing of the wire contacts. A possibly existing coating of the wire contacts 6, 6a can thus be protected in a gentle manner. This is particularly interesting for machine production, i.e. machine assembly of assemblies with wired components 7. In particular, when the wired component is inserted into the receiving areas 35, 35a, the wire contacts 6, 6a only slide along the sliding surfaces 18 or the locking points 16 . The rigidity of the wire contacts 6, 6a together with the rounding of the contact tongues 2, 3, 4, 4a on the side facing the wire contact 6, 6a enables this sliding installation of a wired component 7.

It is evident to the person skilled in the art that the embodiments described above are to be understood as examples and that the invention is not restricted to them, but rather can be varied in many ways without departing from the scope of protection of the claims. Furthermore, it can be seen that the features, regardless of whether they are disclosed in the description, the claims, the figures or otherwise, also define individual essential components of the invention, even if they are described together with other features. In all figures, the same reference symbols represent the same objects, so that descriptions of objects that are possibly only mentioned in one or at least not with regard to all figures can also be transferred to these figures, with regard to which the object is not explicitly described in the description. Reference list

1 base element

2 contact tongue 1

3 contact tongue 2

4 contact tongue 3

4a contact tongue 4

5 Length compensation, e.g. S-lay

6, 6a connecting wire or wire contact of the wired component

7 Component body or wired component

8 Housing wall first side

9 Housing wall, second side

10 Second base element 11 Contact surface component 12 Insertion aid or insertion bevel or support

13 tin layer

14 steel core

15 Contact surface in the radius of the component wire

16 locking lugs or barbs

17 180 ° connection (length compensation not required)

18 sliding area

19 copper layer

20 length in a contact area 21 length over the entire component 22 wire contact start side

23 Connection contact carrier

24 connection contact base

25 connection contact carrier

26, 26a wire contact or connection wire to the component body

27 Terminal contact head

28 Connection contact head, rear grip 29 Connection contact head 30 Connection contact base, grip from behind

31 Terminal contact head

32 Connection contact head, grip behind

35 contact area 37 center line

50 lead frame part or leadframe input

52 second lead frame part or leadframe output

Claims

1. Electrical assembly with

- A wired electrical component (7) with at least two wire contacts (6, 6a, 26, 26a),

- At least one stamped grid part (50, 52) made of metal for producing an electrical connection between at least one wire contact of the wired component and further electrical connections or functional elements of the assembly, the stamped grid part having a base element (1, 10) and contact tongues (2, 3 , 4, 4a) for establishing the electrical connection with the at least two wire contacts of the wired component, the contact tongues being arranged on the base element in such a way that they form at least one first receiving area (35, 35a), and the receiving area (s) so are designed so that at least one of the wire contacts of the wired component can be arranged in the receiving area and is held on the contact tongues in the receiving area.

2. Electrical assembly according to the preceding claim, wherein the contact tongues (2, 3, 4, 4a) hold the wire contact (6, 6a, 26, 26a) by applying a clamping force to the wire contact in the receiving area (35, 35a) and / or wherein the wire contact (6, 6a, 26, 26a) is held between the contact tongues (2, 3, 4, 4a) by means of clamping force.

3. Electrical assembly according to at least one of the preceding claims, wherein at least one of the contact tongues (2, 3, 4, 4a) has a latching lug (16), in particular the wire contact (6, 6a, 26, 26a) from the latching lug in the Receiving area (35, 35a) is held.

4. Electrical assembly according to the preceding claim, wherein the wire contacts (6, 6a, 26, 26a) of the wired component (7) have an inherent rigidity, and wherein the wire contact is latched in the receiving area (35, 35a) when the wire contact is brought into a latched position against the rigidity of the wire contact past the latching lug.

5. Electrical assembly according to at least one of the preceding claims, wherein the wire contacts (6, 6a, 26, 26a) of the wired component (7) have an inherent rigidity, and wherein a clamping of the wire contact between the contact tongues (2, 3, 4, 4a) takes place when the wire contact is brought into a clamping position between the contact tongues against its rigidity.

6. Electrical assembly according to at least one of the preceding claims, wherein the contact tongues (2, 3, 4, 4a) are bent away from the base element (1, 10), and in particular are arranged perpendicularly or almost perpendicularly to the base element.

7. Electrical assembly according to at least one of the preceding claims, wherein each receiving area is formed by at least three contact tongues.

8. Electrical assembly according to at least one of the preceding claims, prepared for receiving in an electrically insulating housing (8, 9), in particular in a base terminal.

9. Electrical assembly according to the preceding claim, wherein the base element (1, 10) is connected to the housing (8, 9), wherein the base element is connected to the housing in particular by an injection molding process.

10. Electrical assembly according to at least one of the preceding claims, wherein at least one of the wire contacts (6, 6a, 26, 26a) of the electrically wired component (7) has a length compensation (5) to compensate for different linear expansion, for example by heat.

11. Electrical assembly according to at least one of the preceding claims, wherein the contact tongues (2, 3, 4, 4a) on the side facing the receiving area (35, 35a) have a curvature, in particular are curved with a radius, and in particular the wire contact (6, 6a, 26, 26a) is bent around the curvature of the contact tongues.

12. Electrical assembly according to one of the preceding claims, wherein the wire contact (6, 6a, 26, 26a) has an iron core with a coating, the coating in particular comprising tin and / or copper.

13. Electrical assembly according to at least one of the preceding claims, wherein the contact tongue (2, 3, 4, 4a) has a bearing surface (10, 15), the bearing surface in particular having a radius that corresponds to the radius of the wire contact to be used (6, 6a , 26, 26a).

14. Electrical assembly according to at least one of the preceding claims, wherein the contact tongue (2, 3, 4, 4a) has an insertion aid (16) so that the wire contact (6, 6a, 26, 26a) along the insertion aid into the receiving area ( 35, 35a) can be brought.

15. Electrical assembly according to at least one of the preceding claims, wherein the wire contact (6, 6a, 26, 26a) in the receiving area (35, 35a) resiliently against the contact tongues (2, 3, 4, 4a) of the lead frame part (50, 52 ) presses, so that at the same time there is good electrical contact between the wire contact and the contact tongues as well as a spring-mechanical clamping of the wire contact against the contact tongues.

16. Electrical assembly according to at least one of the preceding claims, wherein the assembly has two receiving areas (35, 35a), and wherein the receiving areas are arranged on opposite sides of one another with the electrical component (7) in between, or wherein the assembly has two receiving areas (35 , 35a), and wherein the receiving areas are arranged next to one another, or wherein the assembly has a common receiving area (35), and wherein at least two wire contacts (6, 6a, 26, 26a) of the wired component (7) are received in the same receiving area.

17. Electrical assembly according to at least one of the preceding claims, wherein the

Wire contact (6, 6a, 26, 26a), or the wire contacts (6, 6a, 26, 26a), form a straight line with the electrical component (7) before being inserted into the receiving area (35, 35a), and the Wire contact, or the wire contacts, after being inserted into the receiving area, is / are bent in a serpentine manner around the straight line.

18. Electrical assembly according to at least one of the preceding claims, wherein the contact tongues (2, 3, 4, 4a) of a receiving area (35, 35a) are arranged alternately on opposite sides of the receiving area.

19. Electrical assembly according to the preceding claim, wherein the receiving area (35,

35a) has a center (37), and wherein the contact tongues (2, 3, 4, 4a) are spaced from the center less than half the diameter of the wire contact (6, 6a, 26, 26a) to be inserted.

20. Electrical assembly according to at least one of the preceding claims, wherein the

Assembly is surrounded by a potting compound.

21. An arrangement, in particular a base terminal, comprising an electrical assembly according to one of the preceding claims.