DE2509856A1 - METHOD OF MAKING CONNECTORS TO ELECTRICAL COMPONENTS AND COMPONENT WITH AT LEAST ONE STAMPED TERMINAL - Google Patents

Description

Standard electrical system Lorenz AG 25098DO

Stuttgart

H.K.Waldenburger 1

Method for making connections to electrical components and components with at least one punched connection

The invention relates to a method for attaching connections to electrical components, in particular on electrolytic capacitors with solid electrolytes, in which punched from a sheet of metal - on a metal strip lined up - connecting parts are used. The invention also relates to the components with at least one stamped connection.

Methods are already known that use punched connections for capacitors (see DT-OS 2 114 075, DT-OS 2 314 495 and DT-OS 2 402 122). The connections are then punched out of sheet metal in pairs. Through this is the desired distance between the electrode connection pairs particularly safe. In many cases it is determined by additional bars between the connections.

Compared to the quite irregular surfaces of the components, however, these accuracy requirements are

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not appropriate. Rather, the connections must be supplied to the components in an area within which the inaccuracy of the surface can be compensated. The distances between the connections are therefore not exactly at all to be determined.

The known methods also require that the components are guided absolutely parallel to one another. Easy Deviations from the parallel position lead to faulty contacts. This uncertainty is compounded increased by the fact that the cathode connection plate rest on the components with its narrow side on the component target. Even with an ideal surface of the component, contact is made with this connecting strip not sure if there is a shift in the relative position perpendicular to the punched strip. So it is better how Described in DT-OS 2 402 122, a connection strip with the flat side in contact with the surface of the component allow. However, this process can only be used for larger components. The connection material must also be made so large that the component can be stable on it. Since the second connection is central is to be attached to the component, it is necessary to bend the two connections from the sheet metal and punching plane, for which an additional operation must be carried out.

It is the object of the invention to provide a method for attaching connections to electrical components, This is done simply, proportionally and mechanically using the connections stamped on a metal strip

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can be carried out without any unnecessary additional bending operations. It is also an object of the invention easy to create labeled components with punched connections.

This object is achieved with a method of the type mentioned at the outset in that at least two metal strips are used, the connections for one electrode of the component being arranged on at least one strip and the connections for the other electrode of the component being arranged on at least one other strip that the connections are connected to the electrodes or their leads. This new method can be used particularly advantageously for metal strips with connections made of at least partially different material (ie special alloys, special characterizing surface layers or also external shape and dimensions). With “the division of the connections onto different metal strips, it has become possible to feed the components from different directions. It is therefore possible to attach the connections in any planes to one another without having to bend the punched strip. Because the _% connections are fed separately to one another, it is also possible to punch these close together on a strip and thus save on punched sheet metal.

It is also possible, according to the new method, to attach more than one connection to an electrode, these

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Connections can be brought in and attached from a strip or from different metal strips.

It is also possible to modify this method to the extent that a metal strip fitted on both sides is used in which the connections for one electrode are attached on each side. The components the two sides of the metal strip with the different types of connection are fed in succession and attached to these.

Any desired between the fastening of the first connection and the fastening of the second connection can be used Time span within which: other process steps can be carried out on the component. In the case of capacitors with solid electrolytes, for example, the forming can only take place after the anode connection has been attached be performed. Then the other connection can be attached. While forming are the capacitors are already welded to the final connections and still hang together on a metal strip, which only needs to be removed after the second fastening process.

The components manufactured according to the new process have the following characteristic features: The connections differ in shape, dimensions, material or surface coating at least partially, so that one electrical marking (e.g. polarity) is possible. The position of the connections to one another is also suitable for

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Define the directions of electrical properties of the component. For the anode connection of an electrolytic capacitor Particularly thick and / or colored sheets can be used, which the user can already see indicate the electrical polarity, the mechanical only in particular prepared drill holes fit. At the latest when inserting this component into holes of different sizes a possible error is detected. The components manufactured according to the new process are therefore more reliable than the known =

Further advantages of the invention are described with reference to the figures shown schematically in the drawings. Show it:

FIG. 1 shows a stamped pattern of anode connections; FIG. 1a shows a stamped pattern of anode connections; FIG. 2 shows a stamping pattern of cathode connections;

FIG. 3 shows the attachment of the anode connections to capacitors;

FIG. 4 shows the attachment of the cathode connections to the capacitors which have already been anodically contacted;

FIG. 5 shows the completely insulated components;

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FIG. 6 shows a further stamping pattern for anode and cathode connections according to a modified procedure;

Figures 7 to 9 different designs of connections
on components manufactured using the new process.

FIG. 1 shows a section of two metal strips stamped from a metal sheet with anode connections * The two metal strips 10 are with their anode connections
11 have been nested in one another in such a way that there is as little punching waste as possible. Likewise, two strips 12 of cathode connections 13 are punched in an interleaved manner, as shown in FIG.

FIG. 3 shows one of the metal strips TO from FIG. 1 with connections 11. These connections are made by means of pliers 17 or a similar holding device
the components 14 are arranged opposite one another in such a way that the anode wires 15 of the components 14 come to rest over the ends of the anode connections 11. In this position you can
the connections 11 and 15 are welded together.

After welding, the clamp 17 can be removed. The components are now already on one of the final ones Connections firmly and can be moved with this. It is conceivable that they on the strip 10 to other operations and edits are used. Electrolytic

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For example, capacitors can only be formed in this position if the formation does not result in any Oxidation of the connections themselves occurs.

The next step in the process of fastening the connections takes place with a connection strip 12, which is shown in FIG 4 is drawn out separately and a strip from Figure 2 corresponds. The strip 12 is now guided parallel to the strip 10 so that the connections 13 are flat rest against the component bodies 14. This can be done by means of bent connections 13 if the metal strip 12 is to be placed directly on the strip 10. However, if the strip 12 is at a defined distance from the strip 10 out, then curved connections 13 are not required. In this from the contact point of the connections 13 of the component bodies 14 dependent position, the components can be immersed in a solder bath so that the Connections are electrically and mechanically connected to the component bodies.

The components are held on the same strip so that they can be brought into the immersion baths to apply an insulating cover be guided. As shown in FIG. 5, you get a teardrop-shaped insulation coating 16. According to FIG If the coating hardens, they can now be separated from the guide strips 10 and 12, including at the transition from the Connections to the metal strips 10 and 12 predetermined breaking points are provided.

It is also possible that a lead wire is combined with the stamped terminals.

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The advantages of the new process lie in the separate Fastening by soldering after welding to the strip 10. As shown in Figure 3, namely, the pliers can be removed immediately after welding the components. The components are thus of become accessible to all sides. The second strip can be brought in so that the contacts are flat on the component issue. Its position in relation to the first connections is not critical because the connections are on different ones Strips are attached. It is also conceivable that the connections on Figures 4, 5 overlap and not just very closely spaced because they are in different planes. So that the connections of If strips that are not run parallel are again parallel, they must be at a corresponding angle to the metal strip punched \ ^ earth (Figure 1a).

After welding the terminals 11 to the anode wires 15 of the components, a clear position of the components themselves is not yet entirely certain. The components can be made from protrude from their parallel normal position. But even then the contact is still ensured by the connections 13, because the connections lie flat on the component.

By using different sheets for the different Connections It is very easy to set up connections that have distinctive shapes and dimensions as shown in FIG. The much wider anode connection 11 does not fit into the one for the connections 13 holes provided. The use of the component,

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which depends on the polarity of electrolytic capacitors, is therefore only possible in unmistakable switch positions. Since the second connection can also be brought up to the components from a position other than the parallel one can, it is also conceivable that the connections are in different planes to each other, as shown in FIG is. The polarity can already be clearly determined from the position of the planes in relation to one another.

However, it is also possible to attach several connections to one electrode, as shown in FIG is. The connections 11 are on the one hand rotated out of the plane of the punch connection 13 and can also consist of different materials or have different colors.

The different metal strips can be very slightly different are manufactured or processed. Since material of a different quality is required for welding than For example, for soldering, this helps to make the connections. It can do that for the respective case suitable material are selected as a stamped sheet (for example, tinned iron sheet for soldering and, for example for welding nickel sheet).

Another example of how connecting strips can be punched economically from sheet metal is shown in FIG. The connections of one type hang on a metal strip on each side. for example of the anode connection 11

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the components 14 is rotated the entire strip after going through a loop, so that the second terminals 13 can be attached to the components 14 (out of phase on a different part of the strip). Here, too, several strips can be produced in a material-saving manner by nesting one inside the other. Of course nesting is no longer possible with the edge strip. But the main prize of punching material is in the double use of the guide strip 10 to see.

The basic advantage of the invention is that in the separation of the connections and their guides new degree of freedom has been gained. This allows the connections and the components in a wide variety of ways Bring them together and fasten them in a different way. Therefore it is also easily conceivable that Connections are also attached to the components in a sequence other than that shown in the example (namely first by dip soldering and then by welding the connections).

List of reference symbols

10, 12 metal strips

11, 13 stamped connection

14 component

15 Electrode of the component

16 insulating compound

17 pliers

21 claims

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Claims (21)

H.K.Waldenburger 1 Claims Method for attaching electrical connections to components, in particular electrolytic capacitors with solid electrolyte, produced by punching from a sheet of metal, with a Connections connected to metal strips are used, characterized in that that at least two metal strips (10, 12) are used be, with at least one metal strip (10) the connections (11) for the one electrical. de (15) of the component (14) and the connections (13) on at least one other metal strip (12) for the other electrode of the component (14) are arranged, and that the connections (11, 13) with connected to the electrodes (14, 15) or their leads will. 2.) The method according to claim 1, characterized in that metal strips (10, 12) with connections (11, 13) made of at least partially different material be used. 3.) The method according to claim 1, characterized in that metal strips (10, 12) with connections (11, 13) with different shape and / or different Dimensions are used. b09837 / 0597 H.K.Waldenburger 1 4.) The method according to claim 1, characterized in that metal strips (10, 12) with connections (11, 13) can be used with at least partially different surface layers. 5.) The method according to claim 1, characterized in that the metal sheets and anode connections made of nickel Tin-plated iron cathode terminals can be used. 6.) The method according to claim 1, characterized in that the metal strips (10, 12) with the connections (11, 13) and the components to be connected with it (14) from different directions that are not in one plane for attaching the connections are fed. 7.) The method according to claim 1, characterized in that metal strips (10, 12) with connections (11, 13) can be used in which the parallel connections (11, 13) are in a position deviating from 90 ° Angle to the metal strip have been punched out (Figure 1a). 8.) The method according to claim 1, characterized in that the connections for a component (14) in different Levels are attached to the component (14). B09837 / 0597 - ι ό - H.K.Waldenburger 1 9.) The method according to claim 8, characterized in that the connections (11, 13) are attached in such a way that their planes enclose an angle with one another. 10.) The method according to claim 1, characterized in that at least two terminals (11) are connected to one electrode of a component (14) (Figure -ψ . 11.) The method according to claim 10, characterized in that connections are used on an electrode, which are attached to several metal strips. 12.) The method according to claim 10, characterized in that at least two connections on one electrode are used, which are at least partially connected to a metal strip. 13.) Modification of the method according to claim 1, characterized in that a two-sided with connections provided metal strip (10) is used (Figure 6), in which the connections (11) on one side for one electrode and the connections (13) for the other electrode are arranged on the other side and that first the connections on one side and then the connections on the other side of the metal strip are connected to the electrodes or the leads of the components. 609837/0597 H.K.Waldenburger 1 14.) Modification of the method according to claim 1, characterized in that at least one stamped connection is combined with a wire connection. 15.) Electrical component with punched connections, produced according to one or more of the preceding processes, characterized in that the free parts of the connections (11, 13) not attached to the component in terms of shape, material or surface coating are designed differently. 16.) Electrical component encased with insulating compound with punched connections, manufactured according to the Method of claims 1 to 13, characterized in that the protruding from the insulating compound Parts of the connections (11, 13) are designed differently. 17.) Component according to claim 15, characterized in that that the parts of the connections (11, 13) protruding from the insulating compound have different shapes, Have thicknesses and / or dimensions. 18.) Component according to claim 15 or 16, characterized in that that the protruding from the insulating compound parts of the connections (11, 13) at least partially consist of different materials. 609837/0597 - 15 H.K.Waldenburger 1 19.) Component according to claims 15, 16 or 17, characterized characterized in that the parts of the connections (11, 13) protruding from the insulating compound different material and / or different surface layer exist. 20.) Electrical component covered with insulating material with punched connections, produced according to the method of claims 1 to 13, characterized in that that the parts of the connections protruding from the insulating compound are not in one plane lie (Figure 8). 21.) Component according to claim 20, characterized in that the parts protruding from the insulating compound of the connections are in different planes that form an angle with one another. An / pr - 3/3/1975 609837/0597