Air control valve and device for a cabin suspension system of a motor vehicle

Patent metadata

Field	Value
Publication number	US-10995878-B2
Application number	US-201916438942-A
Country	US
Kind code	B2
Filing date	Jun 12, 2019
Priority date	Jun 15, 2018
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

An air control valve ( 100 ) adapted to control an air flow (FA) for an air cushioning receptacle ( 802 ) in a motor vehicle ( 1000 ) includes a valve seat ( 120 ), a valve body ( 110 ), and a valve passage element ( 105 ) with a passage inlet ( 140 ) on an inlet side ( 141 ) and a passage outlet ( 150 ) on an outlet side ( 151 ). A coil spring ( 160 ) in contact with the valve body ( 110 ) and with a valve stop ( 152 ) on the outlet side ( 151 ) is adapted to exert a closing force (FC) to press the valve body ( 110 ) to the valve seat ( 120 ). A damping body ( 200 ) is arranged in an inner spring space ( 161 ) of the coil spring ( 160 ) such that the damping body ( 200 ) radially extends in a winding space ( 162 ) between a first coil winding ( 163 ) and a second coil winding ( 164 ) of the coil spring ( 160 ).

First claim

The invention claimed is:

1. An air control valve ( 100 ) adapted to control an air flow (FA) for an air cushioning receptacle ( 802 ) in a motor vehicle ( 1000 ), the air control valve ( 100 ) comprising:
a valve seat ( 120 ),
a valve body ( 110 ),
a valve passage element ( 105 ) with a passage inlet ( 140 ) on an inlet side ( 141 ) and a passage outlet ( 150 ) on an outlet side ( 151 ),
a coil spring ( 160 ) in contact with the valve body ( 110 ) and a valve stop ( 152 ) on the outlet side ( 151 ), adapted to exert a closing force (FC) to press the valve body ( 110 ) onto the valve seat ( 120 ), the coil spring having an uncompressed state with an inner spring diameter (DSI), and
a damping body ( 200 ) arranged in an inner spring space ( 161 ) of the coil spring ( 160 ) such that the damping body ( 200 ) radially extends in a winding space ( 162 ) between a first coil winding ( 163 ) and a second coil winding ( 164 ) of the coil spring ( 160 ), wherein the damping body ( 200 ) has an outer diameter (DBU) in an uncompressed state that is greater than the inner spring diameter (DSI) and is fitted into the coil spring ( 160 ) with a press fit ( 210 ),
wherein the damping body is disposed inside the coil spring, wherein the windings of the coil spring radially compress the damping body ( 200 ).

2. The air control valve ( 100 ) according to claim 1 , wherein the damping body ( 200 ) radially extends in all winding spaces ( 162 ) between the coil windings of the coil spring ( 160 ).

3. The air control valve ( 100 ) according to claim 1 , wherein the damping body ( 200 ) is adapted to prevent a contact between the first coil winding ( 163 ) and the second coil winding ( 164 ) when the coil spring ( 160 ) is compressed.

4. The air control valve ( 100 ) according to claim 1 , wherein the damping body ( 200 ) is adapted to attenuate noise of a coil winding ( 162 , 163 ) when the coil spring ( 160 ) is compressed.

5. The air control valve ( 100 ) according to claim 1 , wherein the damping body ( 200 ) is separate from the valve body ( 110 ) and contacts a head side ( 112 ) of the valve body ( 110 ) and also contacts the valve stop ( 152 ).

6. The air control valve ( 100 ) according to claim 1 , wherein the valve body ( 110 ) consists of an elastomer.

7. The air control valve ( 100 ) according to claim 1 , wherein the damping body ( 200 ) is elastic.

8. The air control valve ( 100 ) according to claim 1 , wherein the damping body ( 200 ) is air permeable.

9. The air control valve ( 100 ) according to claim 8 , wherein the damping body ( 200 ) is at least one of an open cell body ( 201 ), a foam body ( 202 ), or a polyurethane body ( 203 ).

10. The air control valve ( 100 ) according to claim 1 , wherein the air control valve ( 100 ) comprises an outer housing ( 180 ).

11. The air control valve ( 100 ) according to claim 1 , wherein the valve passage element ( 105 ) has a throttling portion ( 130 ) arranged, with respect to the air flow (FA), upstream of the valve seat ( 120 ) and
the throttling portion ( 130 ) has an inner throttle diameter (DTI) smaller than an inner valve diameter (DVI) and the throttling portion ( 130 ) has an outer throttle diameter (DTO) smaller than an outer valve diameter (DVO).

12. The air control valve ( 100 ) according to claim 11 , further comprising a lip seal ( 170 ) arranged on an outer surface ( 132 ) of the throttling portion ( 130 ).

13. An air control valve device ( 700 ) comprising the air control valve ( 100 ) according to claim 1 , wherein the air cushioning receptacle is part of an air spring device or air leveling device for a cabin suspension system ( 800 ) of the motor vehicle ( 1000 ).

14. A vehicle cabin suspension system ( 800 ) comprising the air control valve ( 100 ) according to claim 1 .

15. The motor vehicle ( 1000 ) with a cabin ( 1010 ) and the cabin suspension system ( 800 ) according to claim 14 .

Assignees

• Wabco Europe Bvba

Inventors

• Repela Marek
• Zak Przemyslaw

Classifications

• F16K15/063

  the valve being loaded by a spring · CPC title

• F16K47/08 Primary

  for decreasing pressure {or noise level} and having a throttling member separate from the closure member {, e.g. screens, slots, labyrinths} · CPC title

• F16K15/026

  the valve member being a movable body around which the medium flows when the valve is open · CPC title

• B60G17/0523

  Regulating distributors or valves for pneumatic springs · CPC title

• B60G2204/162

  Cabins, e.g. for trucks, tractors · CPC title