Pneumatic ABS valve device

Patent metadata

Field	Value
Publication number	US-11186264-B2
Application number	US-201916671550-A
Country	US
Kind code	B2
Filing date	Nov 1, 2019
Priority date	Nov 1, 2019
Publication date	Nov 30, 2021
Grant date	Nov 30, 2021

Abstract

A pneumatic ABS valve device for a pneumatic brake system of a vehicle comprises a check valve mechanism for enabling a supply air flow from a supply port to a delivery port and blocking an air flow in the reverse direction. The check valve mechanism comprises a quick release insert disposed in an insert chamber, the quick release insert being placeable in a basic position for providing a chamber passage in the insert chamber enabling the supply air flow. The quick release insert is displaceable by an air pressure difference from the basic position into an activated blocking position, in which the chamber passage is at least diminished with respect to its basic position, in order to block an air flow from the supply port to the delivery port and enabling exhaust air flow.

First claim

What is claimed is:

1. A pneumatic ABS valve device for a pneumatic brake system of a vehicle, said pneumatic ABS valve device comprising:
a supply port for supplying pressurised air;
a delivery port for delivering pressurised air to a pneumatic brake;
a quick release outlet for a quick release of pressurised air by an exhaust air flow from said delivery port;
a casing; and
a check valve mechanism for enabling a supply air flow from said supply port to said delivery port and blocking an air flow in the reverse direction;
wherein said check valve mechanism comprises a quick release insert disposed in an insert chamber,
wherein said quick release insert is placeable in a basic position for providing a chamber passage in said insert chamber for enabling said supply air flow,
wherein said quick release insert is displaceable by an air pressure difference from said basic position into an activated blocking position, in which said chamber passage is at least diminished with respect to the basic position, in order to block an air flow from said supply port to said delivery port and enabling the exhaust air flow, and
wherein said quick release insert comprises a rotation preventing mechanism for allowing only a displacement between the basic and activated blocking positions and preventing a displacement or rotation of said quick release insert into further positions, wherein said rotation preventing mechanism is without a contact on said casing in the basic and activated blocking positions.

2. The pneumatic ABS valve device according to claim 1 , wherein said quick release insert comprises a first face for contacting a sealing face of said insert chamber in the activated blocking position, thereby closing said chamber passage at least partially, and
wherein said quick release insert further comprises a back stop for contacting a blocking chamber face of said insert chamber in the basic position.

3. The pneumatic ABS valve device according to claim 2 , wherein said back stop is further defined as a back stop face or a protrusion of said quick release insert, extending into a backward direction.

4. The pneumatic ABS valve device according to claim 1 , wherein said quick release insert comprises a sealing surface material on at least its first face.

5. The pneumatic ABS valve device according to claim 4 , wherein said quick release insert comprises a rubber material or plastic material.

6. The pneumatic ABS valve device according to claim 1 , wherein said quick release insert is rigid and non-flexible and configured to be not deformed between its basic position and its activated blocking position.

7. The pneumatic ABS valve device according to claim 1 , wherein said quick release insert is pivotably or swiftably disposed in said insert chamber for pivoting or swifting between its basic position and its activated blocking position.

8. The pneumatic ABS valve device according to claim 7 , wherein said quick release insert is supported on its bottom end in said insert chamber and pivots with its top end between the basic and activated blocking positions, and
wherein the pivoting motion is stopped by the first face and its back stop in the basic and activated blocking positions, respectively.

9. The pneumatic ABS valve device according to claim 1 , further comprising at least one solenoid valve for switching into at least the following positions:
a supply position or brake position for enabling a pressure supply of pressurised air from said supply port to said delivery port and blocking said quick release outlet,
a pressure holding position for blocking said supply port and said quick release outlet, and
a quick release position for connecting said delivery port to said quick release outlet.

10. The pneumatic ABS valve device according to claim 1 , further comprising a throttle in parallel to said check valve mechanism or as part of said check valve mechanism.

11. The pneumatic ABS valve device according to claim 1 , wherein said insert chamber is provided in said casing.

12. The pneumatic ABS valve device according to claim 1 , wherein said quick release insert is provided without a biasing force for biasing it into its basic position.

13. The pneumatic ABS valve device according to claim 12 , wherein in the basic position said quick release insert is provided in a tilted position, wherein a gravity force is acting said quick release insert into the basic position.

14. The pneumatic ABS valve device according to claim 1 , wherein said insert chamber and said quick release insert are positioned directly at the supply port, in order to avoid resonance vibrations of said quick release insert.

15. A pneumatic brake system for a vehicle, said pneumatic brake system comprising:
a pneumatic ABS valve device according to claim 1 ,
a pneumatic brake connected to said delivery port of said pneumatic ABS valve device, and
a pneumatic brake line connected to said supply port for supplying pressurised air.

16. A vehicle comprising the pneumatic brake system of claim 15 .

Assignees

• Wabco Europe Bvba
• Zf Cv Systems Europe Bv

Inventors

• Bialon Rafal
• Dedich Tomasz
• Iwaniec Wojciech

Classifications

• F16K31/0686

  Braking, pressure equilibration, shock absorbing · CPC title

• F16K15/031 Primary

  the hinge being flexible · CPC title

• B60T2270/10

  ABS control systems · CPC title

• B60T8/176

  Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS (B60T8/1755 takes precedence) · CPC title

• B60T15/027 Primary

  in pneumatic systems · CPC title