DE1061861B - Waterproof cable entry for installation purposes - Google Patents

Description

The invention relates to a waterproof cable bushing for installation purposes with an entry nozzle, one can be screwed onto this socket with an internal thread and has a hole for the passage of the cable provided with a cap and an insert ring inserted between the nozzle and the cap, that when the cap is screwed on by an inner end cone of the cap against the cable jacket is pressed.

Watertight cable entries for installations with an entry nozzle and with a on this nozzle screwable cap, between this nozzle and the cap at least an insert ring is provided are already known per se. It is already known that the neck To provide screw-on cap with an inner cone part that when screwing the cap onto the presses the end part of the insert ring facing it and presses it tightly against the cable jacket. Here we already know that there are several diameters between the nozzle and its screw-on cap to use the same insert rings. With all known cable bushings with nozzle and cap the insert ring must be pressed together strongly so that a perfect seal is achieved.

The cable bushing corresponding to the invention is characterized in that the end cone is arranged between the bore and the internal thread of the cap and the insert ring with a first part up to a known radial deposition in the socket for supporting the insert ring protrudes into the nozzle, while it is with a second on the front surface of the nozzle supporting part engages with a larger diameter in the internal thread of the cap and with this Part protrudes into the bore of the same by elastic deformation when the cap is screwed on.

By these measures, the main advantage is achieved that the insert ring for clamping the Cable hardly has to be compressed in its entire length. This is partly due to the known existing intermediate support of the insert ring achieved and on the other hand in that the Insert ring can pass through the bore of the cap to the outside. The insert ring can be in addition, to compensate for the shortening that occurs when it is compressed, for good holding at the same time Press in a manner known per se into the internal thread of the cap when this is the insert ring brings when they are screwed on pressure. Finally, the consequence of this is that also the axial relative movement between insert ring and screw-on cap, gentle on the seal, turns out only slightly.

Waterproof cable entry
for installation purposes

Applicant:

Alfred Grossauer,

Veitheim, Aargau (Switzerland)

Representative: Dipl.-Ing. F. Thalmann, patent attorney,
Freiburg (Breisgau], Werderstrasse 10

Claimed priority:
Switzerland from October 24, 1955

Alfred Grossauer, Veitheim, Aargau (Switzerland),
has been named as the inventor

An advantageous further development of the cable bushing according to the invention is that two or more insert rings are arranged matching one another. It is also special here expedient if the inner diameter of the deposition is equal to the outer diameter of the one Is part of the outermost insert ring and that each inner insert ring has one. the inner insert rings are assigned to the metal disc supporting the deposition, whose outside diameter corresponds to the outside diameter of the

. part of the outermost insert ring and its inner diameter the inner diameter of the associated inner insert ring corresponds.

This ensures that the cable bushing can be used in the same, uniform structural design for cables of different diameters.
The invention is described below with its individual.

Units explained and described in more detail with reference to drawings in two exemplary embodiments. It shows

Fig. 1 shows the cross section of a corresponding to the invention Cable entry;

Fig. 2 is a view of this cable bushing from above;

Fig. 3 is the cross-sectional view of the cable entry of Fig. 1 in the state of use with passed through Cable;

'-: :)' 909 578/312

Claims (3)

I 061 861 FIG. 4 is a cross-sectional view through another embodiment of the cable bushing corresponding to the invention. In the example according to FIGS The inlet socket 1 has an externally threaded part 4 onto which a threaded cap 5 is screwed which has an end cone 6. An insert ring 7 made of plastic, e.g. at one end with a first, inner part 7 'against a shoulder 8 of the connecting piece 1. When the cap 5 is screwed on, the inner cone 6 acts on the outer second end part 7 ″ of the insert ring 7 and presses it against the jacket of the cable 9 and the Front surface of the socket 1. As can be seen from Fig. 3, a completely watertight passage of the cable 9 is achieved, wherein the outer end part 7 "of the one Atzringes 7 is deformed in such a way that it completely fills the annular space between the outer edge of the cap 5 and the cable jacket. The example shown in Fig. 1 to 3 with an insert ring 7 is suitable e.g. for cables with an outer diameter of about 7 to 10 mm. If the cable bushing can also be used for cables of smaller diameter in addition to cables with an outer diameter of about 7 to 10 mm, two or three nested insert rings are advantageously used. An example with three insert rings 10, 11 and 12 is shown in FIG. The outer insert ring 10 with the inner part 10 'and the outer part 10 "corresponds in shape to the insert ring 7 of FIGS. 1 to 3 and can be used either alone or together with the ring 11 or both rings 11 and 12. Each of the Rings 11 and 12 are assigned a washer 13 and 14, respectively, in order to support these rings 11, 12 against the shoulder 8 of the connecting piece 1. For cables with a diameter of 7 to 10 mm, for example, all three rings 10, 11, 12 are used For larger cables, for example 10 to 13 mm in diameter, the innermost ring 12 and the associated washer 14 are removed before assembly, and for even larger cables, for example 13 to 16 mm in diameter, the two inner rings 11 and 12 and the associated washers 13 and 14 have been removed prior to assembly.This has the advantage that a single bushing can be used for very different cable diameters Cable diameter from z. B. 7 to 13 mm can be produced. Patent claims: 1. Watertight cable entry for installation purposes with an entry nozzle, one can be screwed onto this socket with an internal thread and has a hole for the Implementation of the cable provided cap and one inserted between the nozzle and cap Insert ring, which when the cap is screwed on by an inner end cone of the cap against the Cable sheath is pressed, characterized in that the end cone (6) between the bore and the internal thread of the cap (5) is arranged and the insert ring (7 or 10) with a first Part (7 'or 10') up to a known radial step (8) in the connection piece (1) for the support of the insert ring (7 or 10) protrudes into the nozzle (1) while he is with a second part (7 "or 10") supported on the front surface of the connector (1) with larger ones Diameter engages in the internal thread of the cap (5) and with this part (7 "or 10") protrudes into the bore of the same by elastic deformation when the cap (5) is screwed on. 2. Cable bushing according to claim 1, characterized in that two or more insert rings (10, 11, 12 in Fig. 4) are arranged matching one another. 3. Cable bushing according to claim 2, characterized in that the inner diameter the offset (8) is equal to the outer diameter of one part (10 ') of the outermost insert ring (10) and that each inner insert ring (11, 12) has one on the shoulder (8), the inner insert rings (11, 12) against the step (8) supporting metal washer (13, 14) is assigned, the outer diameter of which is the outer diameter of one part of the outermost Insert ring (10) and its inner diameter the inner diameter of the associated inner Insert ring (11, 12) corresponds. Considered publications:
German Patent Nos. 933 019, 878 390, 384,749 232;
British Patent No. 104,269. 1 sheet of drawings 578/312 7.59