Hydraulic unit for a service brake assembly of a hydraulic power-brake system

Patent metadata

Field	Value
Publication number	US-12162445-B2
Application number	US-202217652508-A
Country	US
Kind code	B2
Filing date	Feb 25, 2022
Priority date	Apr 28, 2021
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

A drilling of a hydraulic unit of a service brake assembly of a vehicle hydraulic-power brake system.

First claim

What is claimed is:

1. A hydraulic unit for a service brake assembly of a hydraulic power-brake system for an autonomously driving motor vehicle, comprising:
an upper side which configured for mounting a brake-fluid reservoir and which has ports for the brake-fluid reservoir;
an attachment side, which adjoins the upper side, configured to secure the hydraulic unit to a firewall of the motor vehicle and at which a brake master-cylinder bore opens out; and
a motor side that adjoins the upper side and the attachment side and at which a power-cylinder bore opens out, the brake master-cylinder bore being located in the hydraulic unit between the power-cylinder bore and the upper side, and the motor side having a first port for a secondary brake assembly close to the upper side;
wherein a first feed line in the hydraulic unit runs from a first port of the ports for the brake-fluid reservoir in a direction of the brake master-cylinder bore;
wherein the first feed line runs from the first port for the brake-fluid reservoir in the direction of the brake master-cylinder bore, and after angling, runs between the brake master-cylinder bore and the upper side of the hydraulic unit to a first pressure line that connects the first port for the secondary brake assembly to the brake master-cylinder bore.

2. The hydraulic unit as recited in claim 1 , wherein the first pressure line has a non-return valve traversable in a direction of the first port for the secondary brake assembly.

3. The hydraulic unit as recited in claim 2 , wherein the hydraulic unit has a mounting for the non-return valve in extension of the first port for the brake-fluid reservoir.

4. A hydraulic unit for a service brake assembly of a hydraulic power-brake system for an autonomously driving motor vehicle, comprising:
an upper side which configured for mounting a brake-fluid reservoir and which has ports for the brake-fluid reservoir;
an attachment side, which adjoins the upper side, configured to secure the hydraulic unit to a firewall of the motor vehicle and at which a brake master-cylinder bore opens out; and
a motor side that adjoins the upper side and the attachment side and at which a power-cylinder bore opens out, the brake master-cylinder bore being located in the hydraulic unit between the power-cylinder bore and the upper side, and the motor side having a first port for a secondary brake assembly close to the upper side;
wherein a first feed line in the hydraulic unit runs from a first port of the ports for the brake-fluid reservoir in a direction of the brake master-cylinder bore;
wherein the motor side has a second port for the secondary brake assembly between a second port of the ports for the brake-fluid reservoir and the brake master-cylinder bore, a suction line runs from a third port of the ports for the brake-fluid reservoir to the brake master-cylinder bore, and a second feed line runs from the brake master-cylinder bore in a direction of the upper side of the hydraulic unit, and after angling, runs to the second port for the secondary brake assembly.

5. The hydraulic unit as recited in claim 4 , wherein the suction line leads into a groove encircling the brake master-cylinder bore.

6. A hydraulic unit for a service brake assembly of a hydraulic power-brake system for an autonomously driving motor vehicle, comprising:
an upper side which configured for mounting a brake-fluid reservoir and which has ports for the brake-fluid reservoir;
an attachment side, which adjoins the upper side, configured to secure the hydraulic unit to a firewall of the motor vehicle and at which a brake master-cylinder bore opens out; and
a motor side that adjoins the upper side and the attachment side and at which a power-cylinder bore opens out, the brake master-cylinder bore being located in the hydraulic unit between the power-cylinder bore and the upper side, and the motor side having a first port for a secondary brake assembly close to the upper side;
wherein a first feed line in the hydraulic unit runs from a first port of the ports for the brake-fluid reservoir in a direction of the brake master-cylinder bore;
wherein the hydraulic unit has a mounting for a test valve in a valve side opposite the motor side, from which a line leads tangentially into the brake master-cylinder bore at a peripheral location facing the upper side, and a compensating line runs from the mounting for the test valve parallel to the brake master-cylinder bore, and after angling, runs in a direction of the upper side of the hydraulic unit, and after a further angling, leads into one of the ports for the brake-fluid reservoir.

Assignees

• Bosch Gmbh Robert

Inventors

• Weh Andreas
• Tandler Juergen
• Mayr Matthias
• Kaserer Stefan

Classifications

• B60T17/04

  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 title

• B60T11/232

  Recuperation valves · CPC title

• B60T7/12

  for automatic initiation; for initiation not subject to will of driver or passenger {(limiting speed of vehicles other than rail vehicles B60K31/00)} · CPC title

• B60T7/042

  by electrical means, e.g. using travel or force sensors · CPC title

• B60T13/745

  acting on a hydraulic system, e.g. a master cylinder · CPC title