US 7,017,949 B2 · Flexible corrugated hose fitting

Abstract

A flexible corrugated hose fitting, which is particularly provided for high-pressure installations, such as air conditioning installations using CO2 as the refrigerant, has a connecting element, which can be snapped together with the interior corrugated pipe of the flexible corrugated hose. In addition, the connecting element has sealing elements, which come into sealing contact with the corrugated pipe. Following the area receiving the sealing elements, the connecting element has a cone, which is used as a clamping section. An exterior squeeze ring, or other squeeze element, is used for pressing the exposed end of the corrugated pipe against the clamping section. A pressing sleeve is used for pressing, which drives the squeeze ring by a wedge effect inward. It has an appropriate conical interior surface. The squeeze ring moreover extends over the sheathing. For further securing of the connection, the pressing sleeve can be pressed together here with the sheathing by an appropriate deformation. The pressing sleeve can alternatively be provided with an interior thread in this area, which cuts into the sheathing.

Claims20

Dependent claims

A flexible corrugated hose fitting for flexible corrugated hoses having a corrugated pipe and a sheathing, the fitting comprising:

a connecting element with an extension, which can be pushed into the corrugated tube, a clamping section adjoining the extension for receiving an exposed end of the corrugated pipe and a holding section,
a fastening device provided on the extension for the axial securing of the corrugated pipe, having a clamping element, which can be pushed on the end of the corrugated pipe, and
a pressing sleeve, which can be connected with the holding section of the connecting element, and which has a pipe-shaped section extending to the sheathing,
wherein the extension is embodied in a pipe shape and has an essentially cylindrical outer surface, wherein the fastening device is a snap-in device, part of which are one or several snap-in protrusions, which are sawtooth-shaped in longitudinal section and are arranged on the exterior surface of the extension wherein, when several snap-in protrusions are provided,
which are axially spaced apart from each other, the axial distance (x) between the snap-in protrusions matches the wave distance (x) of the corrugated pipe, or is a whole number multiple thereof, and wherein, the extension has at least one axial slit for making possible a radial movement of the areas of the extension supporting the snap-in protrusions.

2 more elements

Dependencies are inferred from the claim text.

Flexible corrugated hose fitting

Life of this patent

Flexible corrugated hose fitting

Life of this patent

Abstract

Claims20