Hose connector assembly

Patent metadata

Field	Value
Publication number	US-11333274-B2
Application number	US-201716760692-A
Country	US
Kind code	B2
Filing date	Nov 16, 2017
Priority date	Nov 16, 2017
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A hose connector assembly for connecting a hose to a port of a pressurized fluid system, the system including a socket and an adapter tube in fluid communication, with an end portion of the socket adapted to be connected to a port and having a receiving opening. The adapter tube has a plug-in end portion to be pushed into the receiving opening which is adapted to cooperate with the plug-in end portion to form a plug-in connection mechanism. The adapter tube has a hose connector end fitting adapted to be received in, hold and retain a hose end portion. Complementary locking surfaces of the receiving opening and plug-in end portion are engaged when the plug-in end portion is connected by the plug-in connection mechanism to the socket to lock the adapter tube with respect to the socket against rotation about the longitudinal axis of the adapter tube within the socket.

First claim

The invention claimed is:

1. A hose connector assembly for connecting a hose to a port of a pressurized fluid system, the system comprising:
a socket ( 2 ) and an adapter tube ( 40 ), both having a through-going passage ( 28 , 48 ) in fluid communication with each other;
the socket having end portions ( 4 ) with one end portion ( 4 ) being adapted to be connected to a port and having a receiving opening ( 8 ) as part of the passage ( 48 ) in the opposite end portion;
wherein the adapter tube ( 40 ) has plug-in end portion ( 42 ) to be pushed into the receiving opening ( 8 ) which is adapted to cooperate with the plug-in end portion ( 42 ) of the adapter tube to form a plug-in connection mechanism;
wherein the adapter tube ( 40 ) has, opposite to the plug-in end portion ( 42 ), a hose connector end fitting ( 44 ) adapted to be received in and hold a hose end portion placed thereon to thereby retain the hose;
wherein the receiving opening ( 8 ) of the socket ( 2 ) and the plug-in end portion ( 42 ) of the adapter tube ( 40 ) are provided with complementary locking surfaces ( 30 , 50 ) which engage each other when the plug-in end portion ( 42 ) of the adapter tube ( 40 ) is connected by the plug-in connection mechanism to the socket ( 2 ) to lock the adapter tube ( 40 ) with respect to the socket ( 2 ) against rotational movements about the longitudinal axis of the adapter tube ( 40 ) within the socket;
wherein the socket ( 2 ) comprises a screw tube ( 4 ) and a nut ( 6 ) releasably connected to each other by a screw connection with the nut ( 6 ) disposed between the screw tube ( 4 ) and the adapter tube ( 40 ) when the adapter tube ( 40 ) is connected to the socket ( 2 );
wherein the receiving opening ( 8 ) extends through the entire nut ( 6 ) and into an adjoining part of the screw tube ( 4 ), the screw tube being externally threaded and being adapted to be screwed into an internal thread of the nut ( 6 ) at the end opposite to the receiving end of the receiving opening ( 8 ) formed in the nut ( 6 ), and that the locking surfaces ( 30 ) of the socket are located on the inner wall of the screw tube ( 4 ).

2. The hose connector assembly according to claim 1 , wherein the locking surfaces ( 30 ) of the socket ( 2 ) are formed by a plurality of wedge-shaped projections which are circumferentially distributed around and projecting from the inner wall of the receiving opening of the socket ( 2 ), and that the locking surfaces ( 50 ) of the adapter tube ( 40 ) are formed by plurality of notches circumferentially distributed around the outer wall of an end portion of the plug-in end portion of the adapter tube ( 40 ), which wedge-shaped projections of the locking surfaces ( 30 ) of the socket ( 2 ) and which notches of the locking surfaces ( 50 ) of the adapter tube ( 40 ) are arranged complementary such that each notch of the locking surfaces ( 50 ) is engaged by a wedge-shaped projection of the locking surfaces ( 30 ) of the socket when the adapter tube ( 40 ) is in a fully inserted plugged-in state within socket ( 2 ).

3. The hose connector assembly according to claim 2 , wherein the wedge-shaped projections ( 30 ) are provided with end faces ( 32 ) in axial direction that are chamfered, and that the facing axial end faces ( 52 ) of the locking surfaces ( 50 ) of the adapter tube ( 40 ) are chamfered in a complementary manner to the end faces ( 32 ) of the wedge-shaped projections such that, when the adapter tube ( 40 ) is inserted into the socket ( 2 ) the end faces ( 32 ) of the wedge-shaped projections and the axial end faces ( 52 ) of the locking surfaces ( 50 ) of the adapter tube come into abutment and slide along each other due their chamfered arrangement which causes a centering effect bringing the longitudinal axes of the adapter tube and of the socket into alignment and facilitating rotational alignment to bring the tips of the wedge-shaped projections ( 30 ) into alignment with the centers of the notches such the tips of the wedge-shaped projections slide into the notches when the adapter tube ( 40 ) is being fully inserted into the socket ( 2 ).

4. The hose connector assembly according to claim 1 , wherein the plug-in connection mechanism includes a gripping ring ( 10 ) which is moveable in axial direction inside of the receiving opening ( 8 ) over a limited range and has an inwardly pointing sharp edge to come into contact with the outer surface of the adapter tube ( 40 ), wherein the gripping ring ( 10 ) is adapted to cooperate with a tapering circumferential wall portion ( 12 ) on the inner wall of the receiving opening ( 8 ) which tapers towards the receiving end of the receiving opening such that the gripping ring ( 10 ) is, by sliding along the tapering circumferential wall portion ( 12 ), gripping the adapter tube tighter the more a force attempting to pull out the adapter tube ( 40 ) is acting thereon.

5. The hose connector assembly according to claim 4 , wherein the inner wall of the nut ( 6 ) comprises at least one circumferential groove in which a sealing ring ( 24 ) is received and is, closer to the receiving end of the receiving opening ( 8 ) than the sealing ring ( 24 ), provided with the tapering circumferential wall portion ( 12 ) tapering in the direction towards the receiving end of the receiving opening ( 8 ).

6. The hose connector assembly according to claim 5 , wherein an end portion of the screw tube ( 4 ), opposite to a first external thread ( 16 ) on another end portion of the screw tube ( 4 ) for connection to the nut ( 6 ), is provided with a second external thread ( 14 ) adapted for screwing the screw tube ( 4 ) into an internal thread of a port, wherein the first and second external threads ( 14 , 16 ) of the screw tube ( 4 ) are separated by a circumferential flange ( 18 ) in which, at the side facing in the direction of the second external thread ( 14 ) for connection to the port, a circumferential groove is formed in which a screw tube sealing ring ( 20 ) is received for sealing the screw tube ( 4 ) against the port when screw tube is connected thereto.

7. The hose connector assembly according to claim 5 , wherein the circumferential groove in the inner wall of the nut ( 6 ) for receiving the sealing ring ( 24 ) is located, in axial direction of the nut ( 6 ), adjacent to the internally threaded portion of the nut ( 6 ) such that the end of the screw tube ( 4 ) contacts the sealing ring ( 24 ) when the screw tube ( 4 ) is fully screwed into the nut ( 6 ), and that the tapering circumferential wall portion ( 12 ) is formed on the inner wall of the interior of the receiving opening ( 8 ) in the nut ( 6 ) closer to the receiving end of the receiving opening than the circumferential groove with the sealing ring ( 24 ).

8. The hose connector assembly according to claim 1 , wherein following a tapering circumferential wall portion ( 12 ) in the interior of the receiving opening ( 8 ) in the direction towards the receiving end of the receiving opening, a circumferential groove is formed in which an environmental seal ( 26 ) is received for sealing the interior of the receiving opening when the adapter tube ( 40 ) is plugged-in state therein.

9. The hose connector assembly according to claim 8 , wherein the plug-in end portion ( 42 ) of the adapter tube is provided with a peripheral recess portion ( 43 ) having a smaller outer diameter than adjacent cylindrical portions of the plug-in end portion, which peripheral recess portion ( 43 ) is arranged on the plug-in end portion ( 42 ) in axial region thereof such that, when the plug-in end portion ( 42 ) is inserted into the socket ( 2 ) but has not reached the fully inserted position, the environmental seal ( 26 ) is located in the region of the peripheral recess portion ( 43

Assignees

• Ka Group Ag

Inventors

• Lundby Odvar William
• Villanger Kjell
• Daehlin John Magnus
• Mühlmeister Jens

Classifications

• F16L2201/80

  Dust covers · CPC title

• F16L37/0927

  the wedge element being axially displaceable for releasing the coupling · CPC title

• F16L37/088 Primary

  by means of a split elastic ring · CPC title

• F16L2201/10

  Indicators for correct coupling · CPC title

• F16L33/18

  characterised by the use of additional sealing means · CPC title