DK145870B - TRUE SHAPED CABLE SOCKET FOR INSTALLATION OF TWO OR MORE ELECTRICAL CABLES - Google Patents

Description

145870

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a trough-shaped cable sleeve for embedded assembly of two or more electrical cables in which the insertion portions of the cables at the ends of the sleeve are U-shaped in cross-section and arranged 5 to be sealed by sealing means with lead-through openings for the cables.

Experience has shown that the placement of the sealing means around the cables is time-consuming and cumbersome when there is poor working space, because there are other 10 cables in the vicinity of the cables to be joined.

During the performance of a molded joint, it is also necessary that the sleeve and cables cannot be moved relative to each other until the casting resin is cured. To date, this has been achieved by the use of clamps and similar aids.

However, these have the disadvantage that the mounting is cumbersome. Different clamps are required for different cable diameters or the cable must be adapted to the diameter of the clamp e.g. by twisting a ribbon 20 around the cable.

Sockets with tapered ends are also used, and they allow to fit the end of the sleeve to the cable diameter by cutting the tapered end in the proper place. Evidently, this approach is time-consuming and can easily be the cause of errors.

Furthermore, such sleeves have the disadvantage that their design allows only a very limited number of uses, so that several types of sleeves must be disposed of.

30 Sockets are also known in which no special precautions have been taken to prevent the cables and socket from being easily displaced relative to one another. These sleeves do not have the aforementioned disadvantages, but this is offset by the fact that these sleeves must not be moved until the casting resin is cured, so that it is necessary to postpone further operation until this has occurred, which can last several hours. .

The invention aims to alleviate these drawbacks and to provide a sleeve which allows for very short time manufacture of a joint of two or more electrical cables and in which the sleeve, when closed with a cover after filling the resin, can be buried. before the casting has hardened.

To this end, a trough-shaped sleeve of the specified type according to the invention is characterized in that the transverse U-shaped insertion portions of the sleeve on the outside have transverse grooves with toothed bottom, and in that the associated sealing means is formed as a plate with two slots extending from the same edge adapted to grip each of the legs of the trough-shaped sleeve portion and provided with inward-facing teeth to cooperate with the teeth of the associated groove on the sleeve.

It should be noted that e.g. from German Application Pattern No. 1,909,666, it is known to anchor electrical wires in an installation object, such as a conventional circuit breaker, by means of a U-shaped clamp and a cooperating clamp which is locked together by means of pallet toothing, but there This is not a case of actual cable sleeves for high-current cables or about providing sealing to a liquid embedding mass.

The invention is described in more detail below with reference to the drawing, in which: FIG. 1 is a top view of an embodiment of a trough-shaped sleeve according to the invention,

FIG. 2 shows the sleeve of FIG. 1 is a side view; FIG. 3 is a cross-section along line III-III

in FIG. 2, FIG. 4 is a sealing member; and FIG. 5 shows the situation in which the sealing means according to FIG. 4 seals the sleeve at its end surface.

3 145070

The sleeve 1 in FIG. 1 and 2 have mainly U-shaped cross sections in which the open, upper side of the sleeve is closed with a cover after the sleeve has been filled with cast resin. This cover can have a snap edge and 5 is pressed over the edge of the sleeve. Alternatively, the cover may be attached to the sleeve in other ways.

As shown in FIG. 1, 2 and 3, the U-shaped end faces through which the cables are inserted guide 4 in which teeth are arranged 4. The sealing means of FIG.

10 4 consists of a plate 5 with two parallel grooves 6.

There are also teeth 7 on the outwardly facing inner surface 16 of these grooves 6. As shown in FIG. 5, the sealing member 5 is moved over the U-shaped end piece 8 of the guides 3 thereon as it is pushed, and the teeth 4 of this end piece are made to interact with the teeth 7 of the sealing member 5. All teeth are turned in such a way that the sealing member 5 can be easily slid on, but they also prevent the sealing member 5 from moving backwards. The sealing member 5 has a circular portion 9 which, after the sealing member is shot on the end portion 8, with the circular portion 10 of this end portion forms a circular passage 11 for a cable.

Alternatively, the sealing member 5 may have a portion to be cut such that the lead-through opening 11 may be made to cooperate with the cables to be passed in the event of multiple cables passing through.

The sealing means can be designed in such a way that electrical cables of different thickness can be inserted into the socket from the left or right side or from both sides.

The sleeve may be made by injection molding, in which case the teeth may consist of hard, resilient resinous resin.

The embedded assembly is carried out as follows: after the composition of the electrical cables