DE1093845B - Contact connection for the supply lines of electrical devices, especially for heating pad switches - Google Patents

Description

GERMAN

It is known to use screwless terminals instead of screw terminals in electrical equipment. The advantage is not only in the cheaper design of the clamp, but also in the possibility faster connection of the lead wires to the terminals. The screwless terminals consist almost entirely of a clamping plate and an associated spring, which is used to hold the Lead wire on the clamping plate is used. Have other screwless terminals for lead connections Parts bent out of the clamping material, behind which the lead ends are clamped will.

However, the known clamps cannot be used for many areas of application, in particular are they are not only too expensive for small connections and on small devices, but also too cumbersome to handle. Above all, the arrangement and attachment is in very limited space, in particular very difficult when it comes to attaching a large number of clamps next to each other, if not impossible.

The invention has therefore set itself the task of creating a device that is particularly suitable for Heating pad switches with their limited space are of great advantage.

The contact spring, which is fixedly used in the lower part of the housing of the heating pad switch, for example is, was previously crimped or riveted into the housing with a connector, with the thread for the clamping screw was in the connector. Except for the expensive connector, ζ. B. a threaded sleeve, a flanged sleeve or a press-fit piece was still the associated clamping screw provided, the connection being made as usual by the cumbersome screwing movements. This screw connection is known to have the further disadvantages that the connection is caused by the action of heat and shaking can easily solve.

According to the invention, the contact springs arranged in a stationary manner in the contact carrier have a connecting conductor receiving, advantageously approximately U-shaped preformed approach from which the head clasping parts the guide narrowing buddy pushed forward in a manner known per se, in particular Tabs are sheared out, which are connected to the conductor by soldering, or in these at Squeeze the neck like a barb. The springs are advantageous before insertion connected to the connecting wires outside the device.

In a further embodiment of the invention, the approaches of the contacts are particularly shaped and narrow Enclosing recesses in the contact carrier in the contact connection for the supply lines

of electrical devices,
especially with heating pad switches

Applicant:

Busch-Jaeger Dürener Metallwerke

Corporation,

Ludenscheid

Heinrich Stumpf and Heinrich Busch, Lüdenscheid,
have been named as inventors

held their oppressive position on the ladder. The approaches are formed with flaps, with the help of which they to hold the ladder together. With the permanently connected wire, the Spring contact pressed into the groove or into a pocket of the housing base. Here the resilient lugs and flaps tightly against the side walls of the recesses or pockets.

The device according to the invention is shown in three different exemplary embodiments in the drawing shown.

1, 4, 7 and 10 show a spring contact with a cable holder in which the cable end is soldered in will;

Fig. 2, 5, 8 and 11 show a similar shape of the holder, only here the wire bundle is through barb-like, pointed prongs held after the legs of the holder are pressed around the wire bundles are;

3, 6, 9 and 12 show a spring contact in which the U-legs of the holder and the barbs are arranged differently.

The spring contact 1 of the first example (Fig. 1, 4, 7 and 10) has a U-shaped extension la with the U-legs Xb and Ic. From these legs, tabs or webs Id , which serve to guide the connecting wire 2, are pressed inwardly. The wire or the wire bundle is soldered at the narrowed point and then inserted into the groove or pocket of the device housing or base 3. From the legs 1 b and 1 c of the bracket tabs 1 e are angled, which clamp the spring contact in the base.

The second embodiment is illustrated by FIGS. 2, 5, 8 and 11. The spring contact 4 is

009 650/328

provided with a holder 4a similar to the first example. Here 4c top cloth or buddy are made of the legs 4b, 4d pushed out, the manner of barbs engage itself in Umpressen of the legs 4 b and 4 c to the pipe end 5 in the wire bundle. Here, too, angled tabs 4e serve to clamp the spring contact in the base 6 in a recess 6a. It is not necessary that lobes are present 4e, so that the legs can be completely c herumgepreßt around the conductor 4b and 4 and the socket 6 can be a pocket sized accordingly narrower.

In FIGS. 3, 6, 9 and 12, the V-legs la and Tb of the contact spring 7 are not angled laterally, but as an extension of the elongated spring 7. Here, too, tips Tc are pushed inwards from the leg 7b and hold the wire or a wire bundle 8 clamped between the two legs. These are also anchored into the end of the line. The tips can also be placed in the leg Ta so that the wire is supported from both sides. For the insertion of the contact spring 7 a groove or pocket 9 a is also present in the base or device housing 9, in which the contact spring 7 with its legs Tb and Ta is held clamped on the inner walls of the pocket 9 a.

The invention enables the spring contacts to be installed quickly and easily without, under certain circumstances Allows heat treatment and tooling.

Claims (3)

Patent claims: 1. Spring contact for switches of electrical devices, which screwless with the connecting conductors is connected in a clamping and holding manner by parts bent out of the material, thereby characterized in that the contact springs fixedly arranged in the contact carrier have a Have connecting conductors receiving, advantageously approximately U-shaped preformed approach whose parts clasping the head of the ladder's lead narrowing buddy in on pushed forward in a known manner, in particular rags that are sheared off with the head are bound by soldering or are barbed-like in these when the attachment is pressed together intervention. 2. Spring contact according to claim 1, characterized in that the approaches of the contacts through specially shaped, tightly enclosing recesses of the contact carrier in their the conductor are held in a clamping position. 3. Spring contact according to claim 2, characterized in that the lugs are formed on lobes with the help of which they are compressed to hold the ladder. Considered publications:
German Patent Nos. 866 204, 387 968;
U.S. Patent Nos. 2,316,267, 2,753,392, 2,648,050, 2,497,484. 1 sheet of drawings © 009 650/328 11.60