US 12,104,734 B2
Receiving unit of a coupling device for fluid lines
Sören Schröter, Königsberg (DE)
Assigned to Fränkische Industrial Pipes GMBH & CO. KG, Königsberg (DE)
Appl. No. 18/025,116
Filed by Fränkische Industrial Pipes GMBH & CO. KG, Königsberg (DE)
PCT Filed Aug. 31, 2021, PCT No. PCT/EP2021/073956
§ 371(c)(1), (2) Date Mar. 7, 2023,
PCT Pub. No. WO2022/049050, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 10 2020 211 212.6 (DE), filed on Sep. 7, 2020.
Prior Publication US 2023/0358353 A1, Nov. 9, 2023
Int. Cl. F16L 37/14 (2006.01); F16L 37/35 (2006.01); F16L 37/42 (2006.01)
CPC F16L 37/144 (2013.01) [F16L 37/35 (2013.01); F16L 37/42 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A receiving unit of a coupling device for fluid lines, wherein the receiving unit is designed to be connected at a first end to a fluid line, which does not belong to the receiving unit, and defines a fluid flow channel in an interior of the receiving unit, the receiving unit comprising:
a closure element that is displaceable between a closed position and a release position, wherein the closure element, in the closed position, is designed to fluidically seal the fluid flow channel of the receiving unit between the first end and a second end of the receiving unit, the second end being opposite the first end in relation to a main flow direction along the fluid flow channel,
wherein the closure element is preloaded into the closed position using a spring element,
wherein the closure element comprises a substantially cylindrical portion which is free of perforations,
wherein an entirety of the spring element, in the release position of the closure element, is arranged within a region, which is completely overlapped by the cylindrical portion along an entire longitudinal extent of the cylindrical portion as viewed in a radial direction of the cylindrical portion, and
wherein the closure element further comprises a section provided with perforations, wherein the perforations of the section are formed as openings which fluidically connect an interior of the closure element to an exterior of the closure element;
wherein a counter-contact surface of the closure element of the receiving unit is configured as a collar protruding from the closure element of the receiving unit in the radial direction; and
wherein the closure element of the receiving unit comprises a central bolt having a free end which extends in the direction of the second end of the receiving unit, and which is designed to rest against a bolt-receiving surface formed on a closure element of a plug-in unit upon insertion of the plug-in unit into the receiving unit, so that, when the insertion of the plug-in unit is continued into the receiving unit, the closure element of the plug-in unit or the closure element of the receiving unit is displaced from the closed position of the closure element in the direction of the release position.