DE1064584B - Connection terminal for electrical lines consisting of clamping screw, U-shaped bracket and clamping body - Google Patents

Description

There are terminals for electrical lines are known in which a clamping screw in a recess a U-shaped bracket leads below her head and with her bolt thread into the Clamping body can be screwed in. The connection line is then screwed in with the clamping screw clamped between the U-shaped bracket and the clamp body.

In these known terminals very time-consuming methods must be used to the in the web of the U-shaped bracket provided recess in the recess below the head of the Bring clamping screw. In a known embodiment, the recess in the bracket web with a Provide a thread that corresponds to the bolt thread of the clamping screw. The clamping screw will then screwed through the nut thread in the bracket bar until the bracket bar is in the recess reaches below the screw head. In this position, the threads in Bracket bar can be clamped shut with the help of a special tool so that the bracket is when loosening the Do not screw the clamping screw back into the bolt thread. In another known embodiment With such terminals, the bolt of the clamping screw is initially unthreaded executed and in this state passed through a thread-free recess in the bracket web. With With the help of special tools, a thread is then rolled into the screw bolt, whereby the The outer diameter of the bolt thread becomes larger than the bolt diameter.

Except for the aforementioned, very complex work processes that become necessary during assembly the known clamps still have the disadvantage that the clamping screw of the fully assembled clamp can be unscrewed from the clamp body. With hasty work it often happens that the clamping screw is turned so far that the screw with the clamp falls off the clamp body. The screw then has to be laboriously threaded into the thread of the clamping body, whereby a lot of time is lost.

The object of the invention is to design a terminal for electrical lines consisting of a clamping screw, U-shaped bracket and clamping body, the clamping screw of which can be screwed into the clamping body below its head and which has a recess leading to the U-shaped bracket so that the clamping screw is once the fully assembled clamp cannot be unscrewed from the clamp body and that, on the other hand, only a simple bending process is required on one leg of the U-shaped bracket when mounting the clamp parts.
U- shaped bracket and clamp body
existing terminal
for electrical lines

Applicant:
Siemens & Halske Aktiengesellschaft,
Berlin and Munich,
Munich 2, Wittelsbacherplatz 2

Richard Egloffstein, Karlsruhe, has been named as the inventor

will. According to the invention this is achieved in that one leg of the bracket has an inwardly bent one Approach is provided that the clamping body limiting the stroke movement of the approach Has guide surface and that the recess provided in the bracket web for guiding the bracket in runs in the longitudinal direction of the bar web and partially on the outer diameter of the clamping screw thread is widened.

The invention will be explained in more detail with reference to the drawing.

Fig. 1 shows the terminal composed of the three parts clamping screw, bracket and clamping body, while Fig. 2 shows the U-shaped bracket in plan view. All parts are greatly enlarged drawn.

The clamping body 1 is provided in the direction of its longitudinal axis with a thread 2 into which the The thread of the clamping screw 3 engages. The upper part of the clamp body has a straight guide surface on the outside 4. Opposite this is another guide surface 7 between two lugs 5 and 6 arranged for the U-shaped bracket 8. The clamping screw 3 has a recess below its head 9 10, in which the U-shaped bracket 8 is guided with its recess 11. The clamp body is provided in the lower part with a soldering eye 12 for the corresponding electrical connection. At the Point 13 is incorporated a wedge-shaped recess, which is used to attach the clamping body in a corresponding Insulating body is used. To fasten the clamp body, it is inserted through an opening of the Insulator inserted through and then the wedge-shaped recess 13 flanged.

909 610/285

Claims (2)

The recess 11 of the bracket 8 can be seen from FIG. 2; it fits into the recess 10 of the clamping screw 3. The recess 11 widens to the left to the dimension D, which corresponds to the diameter of the thread of the clamping screw 3. For the purpose of joining the parts of the connecting terminal together, the bracket leg 19 with the extension 14 is bent outwards so that it assumes the position shown in dashed lines in FIG. The thread of the clamping screw is inserted through the recess with the width D and then inserted with its recess 10 into the recess 11. The screw is then screwed into the thread 2 of the clamping body, the bent leg of the U-shaped bracket with the projection 14 sliding past the projection 5 of the clamping body. The parts now have the position shown in FIG. 1, but the right leg of the U-shaped bracket, as shown in dashed lines, is still bent. With the aid of pliers, this leg is then bent against the guide surface 7 of the clamping body so that it rests against the latter. The terminal can now be used in any insulating strip or in a corresponding insulating body, as already described. In the connection terminal according to the invention, the U-shaped bracket is guided upwards in a manner known per se when the clamping screw is screwed on, and the connection opening is released. The movement of the clamping screw is limited by the shoulder 14 of the U-shaped bracket, which abuts against the shoulder 5 of the clamping body. This means that the clamping screw and bracket cannot be unscrewed and thus cannot be lost. The clamp is particularly useful where very thin wires or several wires have to be clamped at the same time. Patent claims: 1. From clamping screw, U -shaped bracket and clamp body existing connection terminal for electrical lines, their in the clamp body ίο screw-in clamping screw below its head has a U- shaped bracket leading recess, characterized in that one leg (19) of the bracket (8) is provided with an inwardly bent projection (14) that the clamping body a lifting movement of the Approach limiting guide surface (7) and that the recess (11) provided in the bracket web for guiding the bracket extends in the longitudinal direction of the bracket web and is partially widened to the outer diameter of the clamping screw thread. 2. Terminal according to claim 1, characterized in that before the installation of the U -shaped bracket be provided with a shoulder leg (19) is bent outwards and that this leg is bent inwards only after all the clamping parts have been assembled in such a way that its extension (14 ) rests against the associated guide surface (7). Considered publications:
German Patent No. 726,300;
British Patent No. 632,048. 1 sheet of drawings