HYDRAULIC BLOCK FOR A HYDRAULIC UNIT OF A BRAKE CONTROL SYSTEM AND METHOD FOR THE MANUFACTURE THEREOF

• US 20190322264A1
• Filed: 11/20/2017
• Published: 10/24/2019
• Est. Priority Date: 11/30/2016
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Weh, Andreas, Tandler, Juergen, Mayr, Matthias
• Granted Patent: US 11,180,129 B2
• Time in Patent Office: Days
• CPC Class Codes: B23P 15/001 valves or valve housings welding B23K; valve housings per se F16K
• CPC Class Codes: B60T 17/04 Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses traction couplings involving joints for supply lines, electric circuits, or the like B60D1/62; couplings peculiar to railway vehicles for, or combined with, couplings or connectors for fluid conduits or electric cables B61G5/06; pipes, cut-off valves, couplings, air hoses per se F16C, F16K, F16L
• CPC Class Codes: B60T 8/368 combined with other mechanical components, e.g. pump units, master cylinders
• CPC Class Codes: F15B 13/0814 Monoblock manifolds

Abstract

For the purpose of redundancy, ports are provided for a separate power brake pressure unit on a hydraulic block of a hydraulic unit of a slip control system of a hydraulic vehicle power braking system. The ports are attached as cylindrical collars to the hydraulic block by friction welding.

Claims

1-10. -10. (canceled)

11. A hydraulic block for a hydraulic unit of a brake control system of a hydraulic vehicle braking system, the hydraulic block comprising:

receptacles for solenoid valves of the brake control system;

first ports for hydraulic wheel brakes; and

second ports for one or both of a power-assisted pressure unit and a power brake pressure unit.

12. The hydraulic block of claim 11, wherein the second ports are situated on an engine side of the hydraulic block.

13. The hydraulic block of claim 11, further comprising:

a master brake cylinder bore; and

a connecting bore via which one of the second ports communicates with the master brake cylinder bore and another of the second ports communicates with one of the first ports.

14. The hydraulic block of claim 13, wherein the master brake cylinder bore does not communicate with any of the first ports via the connection bore.

15. The hydraulic block of claim 11, further comprising a power cylinder bore.

16. The hydraulic block of claim 11, wherein one or both of (a) the first ports and (b) the second ports include collars.

17. A method for manufacturing a hydraulic block for a hydraulic unit of a brake control system of a hydraulic vehicle braking system, wherein the hydraulic block includes receptacles for solenoid valves of the brake control system, first ports for hydraulic wheel brakes, and second ports for one or both of a power-assisted pressure unit and a power brake pressure unit, and wherein one or both of (a) the first ports and (b) the second ports include collars, the method comprising forming the collards so that they are integrally joined to the hydraulic block.

18. The method of claim 17, further comprising severing the collars from a rod.

19. The method of claim 17, further comprising machining a circumferential inner corner at a transition from one or the collars to the hydraulic block.

20. The method of claim 17, further comprising boring a bore through one of the collars, into a body of the hydraulic block.