DE8603237U1 - Hose screw connection - Google Patents

Description

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¹¹ hose screw connection "

Company FLEXA GmbH Darmstädter Strasse 184 6450 Hanau 7 (Steinheim)

Description:

The invention relates to a ski smear test for connecting a hose with a screw-threaded hose end piece, the Coupling body has an area provided with an external thread at one end.

A known hose screw connection of the type mentioned ' is designed in several parts and comprises an inner sleeve, i on which one end area with a hose thread provided hose sleeve is attached, which is slightly conical over the entire length inward and only when the end of the hose is inserted is sufficient due to the resulting clamping effect with the inner sleeve forms solid bracket. Here is that

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ii 6 β * * * ti φ * * *

The front end of the hose used is not adequately sealed to the outside.

The disadvantage is that the "arching effect" of the hose prevents it from being compressed, so that the desired clamping effect was not achieved »

The aim of the invention is to remedy this deficiency and therefore provides for a hose screw connection of the initially introduced mentioned type before that the coupling body on the area to be connected with a hose a Has outer wall and an inner wall, which are integrally connected to one another and between them a Form the annular space, which is located radially at the inner end in the area of the connection between the outer wall and the inner wall is designed to taper conically towards the outside, and that the inner wall of the outer wall at least a thread protruding into the annulus + · - and is not conical, so that the hose does not come to rest on the outside.

Due to the one-piece connection of the inner sleeve and the hose outer sleeve at the front end of the hose a seal of the hose end is achieved, with the strongly conical area close to the inner Front end of the inner wall expands the hose,

so that a clamping effect arises, which makes it impossible to unscrew | of the hose under normal load.

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Further advantageous embodiments of the invention emerge from the claims and the following Description.

The invention is illustrated below with reference to the drawing explained in more detail, for example, in an embodiment of a hose connection according to the invention is shown, half in section and half in external view.

According to the invention, the area receiving the hose is provided with a hose screw connection as the housing an outer wall 1 formed, which is in one piece with a in the central region of the coupling body Inner wall 2 is connected, which at the same time forms a sleeve and from one end to the other the hose screw connection is sufficient.

At least one thread 4 is formed on the inner wall surface 5 of the outer wall 1, which is shown in FIG the annular space between the outer wall 1 and the inner wall 2 protrudes.

The protruding area of the inner wall 2 carries a connecting piece 6, which through in the axial direction an annular bead 7 is secured against falling out, which is formed on the front end of the inner wall 2. The connecting piece 6 is provided with an external thread 8 and has a larger area Diameter of screw surfaces 9.

Between the adjacent end faces of the outer wall 1 and the connection piece 6 a ring seal 10 is arranged.

The inner wall 2, which forms a sleeve, is cylindrical over most of its length in the region of the annular space formed in relation to the outer wall 1. This area is followed by a more conical, radially outwardly extending area 3, which extends as far as the connection area with the outer wall 1. ^:

While the hose is being inserted, it is attached to i

its front end in this conical area according to j

expanded and compressed on the outside so that a j

Clamping effect is created and apart from a good seal!

also a protection against unscrewing with normal j

Load is achieved. The outer part inside 5 j

is designed so large in diameter that the hose '

outer diameter to be screwed up to the stop! can, and is not limited by the inner surface 5. This effect is reinforced by at least

a thread is formed in said annular space, which enables insertion of the hose end by rotation the same forces.

In this way, so-called spiral hoses can be made Plastic can be used.

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A field of application of a hose screw connection according to the invention is in the field of electrical installations. Here is the one through the ring seal achieved better sealing compared to the installation housing also cause the hose screw connection in a to classify a higher degree of protection.

Claims (5)

Claims: y! 1. Hose screw connection for connecting a hose with a screw-threaded hose end piece, the coupling body at its one End has an area provided with an external thread, characterized in that the coupling body has an outer wall (1) and an outer wall on the area to be connected with a hose Has inner wall (2) that are integral with each other! are connected and between them form an annular space which at the inner end in the area of the connection between the outer wall and the inner wall tapers radially outwards (3) conically, and that the inner wall (5) of the outer wall is cylindrical and! at least one thread protruding into the annular space; gear (U) . j 2. Hose screw connection according to claim 1, characterized in that the external thread (8) on one separate connection piece (6) is formed, which is rotatable but axially immovable on the Coupling body is mounted. 3 · Hose screw connection according to claim 2, characterized in that the coupling body on its Front end has a radially protruding bead (7) which has an axial locking element for the Forms connector. / 2 4. Hose screw connection according to claim 2 or 3, characterized in that between the front ends the connector and the hose attachment area a ring seal (10) is inserted into the coupling body. 5. Hose screw connection according to one of the preceding Claims, characterized in that the outer wall (1) of the annular space has an internal thread in the form of the "Thread" of a helical hose carries.