DE218814C

DE218814C -

Info

Publication number: DE218814C
Application number: DENDAT218814D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

-JVl 218814-KLASSE 21 c. GRUPPE -JVl 218814- CLASS 21 c. GROUP

Patentiert im Deutschen Reiche vom 7. März 1908 ab.Patented in the German Empire on March 7, 1908.

Es sind bereits lötfertige Anschlußstücke für elektrische Leitungen bekannt. Beispielsweise hat man in Kabelschuhe oder sonstige Anschlußstücke eine gewisse Menge Lot. eingebracht und darüber die erforderliche Menge eines Lötflußmittels eingefüllt. Man hat auch vorgeschlagen, in Anschlußstücken die Lötmittel derart anzubringen, daß in dem Hohlraum des Anschlußstückes der Boden und dieThere are already soldered connectors for electrical lines known. For example you have a certain amount of solder in cable lugs or other connectors. brought in and over it the required amount of a soldering flux is filled. One also has proposed to apply the solder in connection pieces in such a way that in the cavity of the connection piece the floor and the

ίο Seitenwandung mit Lot in einer gewissen Stärke bedeckt und in den verbleibenden Hohlraum das erforderliche Lötnußmittel eingebracht wurde. Diese Anordnungen haben gewisse Nachteile. Was zunächst die letztere betrifft, so muß bei ihr der Durchmesser der Bohrung größer gemacht werden, als der Durchmesser der einzulötenden Leitung, weil ja ein Teil des Innenraumes dieser Bohrung durch den Mantel aus Lotmetall fortgenommen wird und die Leitung sonst nicht eingeführt werden könnte. Dies ist aber unzweckmäßig, weil allgemein die Bohrung eines Anschlußstückes nicht größer sein soll, als der Durchmesser der einzulötenden Leitung.ίο side wall with solder of a certain thickness covered and introduced into the remaining cavity the required solder became. These arrangements have certain disadvantages. As for the latter, first, so with her the diameter of the hole must be made larger than the diameter the line to be soldered, because part of the interior of this hole through the Sheath made of solder metal is removed and the line otherwise not be inserted could. But this is inexpedient because generally the bore of a connecting piece should not be larger than the diameter of the wire to be soldered.

Außerdem hat die Anordnung, ebenso wie die zuerst erwähnte, den Nachteil, daß die Herstellung ziemlich umständlich ist. Es genügt nämlich nicht, in das fertige Anschlußstück etwa die erforderliche Menge geschmolzenen Lotmetalls einfach hineinzugießen; denn das Lot würde in diesem Falle sich nicht mit der Wandung des Anschlußstückes durch Lötung verbinden, und zwar selbst dann nicht, wenn man die Wandung vorher mit einem Lötflußmittel behandelt hat. Vielmehr muß man das ganze Anschlußstück auf Löthitze bringen, also mindestens ebenso hoch erhitzen wie das flüssige Lot. Dies ist schon an sich umständlich und kostspielig, und bei der zweiten Einrichtung kommt noch hinzu, daß das Lötmittel in die Form eines die Wandungen der Bohrung bedeckenden Mantels mit innerem Hohlraum gebracht werden muß.In addition, like the first mentioned, the arrangement has the disadvantage that the Manufacturing is quite cumbersome. Namely, it is not sufficient to insert it into the finished connection piece just pour in about the required amount of molten solder; because In this case, the solder would not be soldered to the wall of the connection piece connect, even if you have the wall with you beforehand Has treated soldering flux. Rather, you have to solder the whole connector to soldering heat bring, i.e. heat at least as high as the liquid solder. This is in itself cumbersome and expensive, and with the second setup there is also that that Solder in the form of a jacket covering the walls of the bore with internal Cavity must be brought.

Außerdem leidet durch das Erhitzen der Anschlußstücke deren Äußeres, und man muß die Stücke deshalb, um sie nicht unansehnlich in den Handel zu bringen, nochmals abschmirgeln oder nachpolieren.In addition, by heating the fittings, their appearance suffers, and one has to sand down the pieces again so as not to sell them unsightly or polish.

Gegenstand der Erfindung ist nun eine Anordnung bei Anschlußstücken, durch welche diese ohne Erhitzen lötfertig gemacht werden. Es ist vielmehr nur dann erforderlich, die Stücke zu erhitzen, wenn die Lötung tatsächlich erfolgen soll. Während also bei den früheren Anordnungen zweimal erhitzt werden mußte, nämlich einmal, um sie lötfertig zu machen, und das zweite Mal, um die Leitung einzulöten, genügt bei der neuen Einrichtung eine einmalige Erhitzung, durch welche das Lot gleichzeitig mit dem Anschlußstück und der einzulötenden Leitung eine metallische Verbindung eingeht.The invention now relates to an arrangement in connection pieces through which these can be made ready for soldering without heating. Rather, it only requires the pieces to be heated if the soldering is actually to take place. So while with the earlier arrangements had to be heated twice, namely once to make it ready for soldering and the second time to solder the lead in, In the case of the new device, a single heating is sufficient, through which the solder simultaneously enters into a metallic connection with the connector and the line to be soldered.

Es genügt zu diesem Zwecke, in den Hohlraum des Anschlußstückes zunächst das Lötflußmittel einzubringen, dessen Menge natür-' lieh dem einzelnen Falle entsprechend bemessen werden muß. Darauf wird in den Hohlraum des Anschlußstückes ein Stück Lötmetall, zweckmäßig in Form eines Pfropfens von gleichem Querschnitt wie der Hohlraum, eingesetzt und durch einen Schlag mit einem Dorn, durch Pressen oder auf andere geeignete Weise festgeklemmt. For this purpose, it is sufficient to first insert the soldering flux into the cavity of the connecting piece to be brought in, the amount of which is naturally measured according to the individual case must become. A piece of solder is then placed in the cavity of the connector, expediently used in the form of a plug of the same cross-section as the cavity and clamped by punching with a mandrel, pressing, or other suitable means.

Wenn ein so vorbereitetes AnschlußstückIf a connector prepared in this way

Claims

is heated, the soldering flux located at the bottom of the cavity becomes liquid. Same then the solder also melts and, since it is heavier, displaces the soldering flux from the bottom of the cavity. The soldering flux then rises, as is practical Tests have shown on the wall of the cavity, so that the wall is cleaned and the metallic connection between solder

ίο and connector is made possible. The excess of the soldering flux accumulates on the surface, and it is then only necessary to insert the line to be soldered into the Introduce cavity, with which the entire soldering is finished.

The arrangement in such a way that the soldering flux is at the bottom and is held in place by the soldering metal above it only enables connection pieces that are ready to be soldered to be produced by cold means. It has been proposed, even if the arrangement is reversed, to cold-press in the solder metal; but this is practically impossible; because there is then no guarantee that when the connecting piece is subsequently used during heating, an intimate connection will actually occur between the solder and the wall of the cavity. This \ ^'r Getting Connected will only be secured in cold production, \ Venn, as according to the invention, the soldering flux is at the bottom, because the possibility exists only that by the soldering flux, which upon heating of the connecting piece, as mentioned, between the wall and the molten solder rising to the bottom, all impurities are removed which may prevent an intimate metallic connection between solder and connecting pieces. In the case of the solder metal lying below, the metallic connection is in no way secured by the protection that the soldering flux on top can possibly provide against oxidation of the solder; because this protection is not sufficiently secure, especially when the connectors are stored for a longer period of time. In practice, therefore, when the solder is introduced under the soldering flux, it is necessary to do this with heating in order to connect it securely to the wall of the connecting piece, and so, as said, must be heated twice.

The amount of soldering flux can easily be measured for the individual case by one makes a recess at the bottom of the cavity of the connector, which is straight has enough capacity to hold the required amount of soldering flux. This amount must of course be tested for the individual types of connection pieces can be determined, but this does not cause any significant amount of work, because they are mass-produced items that are manufactured in large numbers.

Such an arrangement is shown in FIG.

At the bottom of the cavity of the connection piece α is the recess b filled with soldering flux; c is the metal plug made of solder rivet.

The recess can of course also be hemispherical, cylindrical or in some other suitable manner Form can be formed.

One can also make the device so that the soldering flux instead of in a recess the bottom of the cavity is housed in the metal plug. Such an arrangement shows Fig.

2. The bottom of the cavity of the connector is flat. The soldering flux is located in a, for example, conical recess b of the metal plug c.

These arrangements can be used with all types of fittings.

You can also make the dosage in such a way that you manufacture from a rod Soldering tin (soldering metal tube filled with soldering flux) cuts off a corresponding piece and introduces it into the cavity of the connecting piece, into which the actual solder metal plug is fitted in the manner indicated.

In all cases, the new arrangement avoids the disadvantages indicated above, the manufacture is simpler than that of the earlier devices and the fittings are on made completely ready to solder by cold means. There is still the advantage that not the soft soldering flux in the new device as in the older arrangement exposed but is completely protected so that it will neither be contaminated nor contaminated can fall out. If necessary, the soldering flux can also be used from all sides from below, surrounded with solder metal. It is essential for the invention that the solder metal mainly above the soldering flux, and that the latter when heated at first essentially descends and only rises later.

-r-,.-r- ,.

Fatent claim: ■

Ready-to-solder connection pieces for electrical lines, characterized in that the soldering flux lies in the cavity of the connector below the solder metal and is held in place by it.

1 sheet of drawings.