Hydraulic block for a hydraulic unit

Patent metadata

Field	Value
Publication number	US-9688256-B2
Application number	US-201314651756-A
Country	US
Kind code	B2
Filing date	Oct 22, 2013
Priority date	Dec 14, 2012
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

A hydraulic block for a hydraulic unit is configured to control the brake pressure in a slip-controlled vehicle brake system. Multiple pressure sensors are received in receptors that are defined by the hydraulic block and that are configured to place each of the pressure sensors in hydraulic contact with a respective brake circuit. The pressure sensors are configured to detect wheel brake pressures in the corresponding brake circuits. The hydraulic contact between the pressure sensors and the brake circuits is enabled by a common duct that includes a shut-off element configured to block a pressure medium connection between the brake circuits.

First claim

The invention claimed is:

1. A hydraulic block for a hydraulic unit for controlling the brake pressure of a vehicle brake system with traction control, the hydraulic block defining:
a plurality of sockets, each of which receives one of a pressure generator, a valve, and a pressure sensor;
a plurality of fluid connections connecting a first set of the plurality of sockets to a first fluid circuit and connecting a second set of the plurality of sockets to a second fluid circuit, the first and second fluid circuits being hydraulically separated from each other, wherein a first pressure sensor is arranged in a first socket of the first set, and a second pressure sensor is arranged in a second socket of the second set; and
a common duct hydraulically connected to the first and second sockets,
wherein the hydraulic block includes a shut-off element fixed in the common duct at least partially between the first and second sockets so as to permanently prevent fluid communication through the common duct between the first and second fluid circuits.

2. The hydraulic block as claimed in claim 1 , wherein the common duct is defined by a longitudinal bore that runs in a straight line and that is closed at each end.

3. The hydraulic block as claimed in claim 2 , wherein:
the common duct has a stepped shape in which a portion of the common duct from an outer end of the common duct to a step has a first diameter and a second portion of the common duct extending from the step away from the first portion has a second diameter; and
the shut-off element is arranged in a region of the step.

4. The hydraulic block as claimed in claim 2 , wherein:
the common duct is further defined by a first bore portion having a first diameter and a second bore portion having a second diameter smaller than the first diameter; and
the shut-off element of the common duct includes:
an integral pin-shaped portion that has a head with a shape matched to a shape of the first bore portion;
a shank that has a diameter that is smaller than a diameter of the head and that has a shape matched to the shape of the second bore portion; and
the shank has a length configured such that the shut-off element seals off the second bore portion of the common duct when the head externally seals an orifice of the duct.

5. The hydraulic block as claimed in claim 1 , wherein:
a first side of the hydraulic block defines further sockets configured to receive connections for wheel brakes; and
the common duct is defined by a blind bore, which opens out towards said first side of the hydraulic block.

6. The hydraulic block as claimed in claim 1 , wherein the hydraulic block further defines:
a first branch duct fluidly connecting the first socket to the common duct;
a second branch duct fluidly connecting the second socket to the common duct;
a third branch duct fluidly connecting a third socket of the first set to the common duct, the third socket receiving a first valve; and
a fourth branch duct fluidly connecting a fourth socket of the second set to the common duct.

7. The hydraulic block as claimed in claim 6 , wherein the third and the fourth branch ducts run in opposite directions towards each other and at angles of other than 90° to external faces of the hydraulic block.

8. The hydraulic block as claimed in claim 1 , the plurality of sockets including:
a first set of sockets that are configured to receive valves and that are located side by side in a straight first row on the hydraulic block; and
a second set of sockets that are configured to receive valves and that are located side by side in a second row on the hydraulic block, which runs below and parallel to the first row;
wherein the first socket, in which the first pressure sensor is arranged, is located above the first row and is connected one of the first set of sockets in the first row, and
wherein the second socket, in which the second pressure sensor is arranged, is located between the first row and the second row, and is connected to one of the second set of sockets in the second row.

9. The hydraulic block as claimed in claim 8 , wherein the common duct is in contact with the first and second sockets, and runs perpendicular to the first row and second row.

10. The hydraulic block as claimed in claim 8 , the hydraulic block further defining additional sockets that are each configured to receive a connection with a wheel brake, the first socket being in fluid communication with a third socket of the additional sockets and the second socket being in fluid communication with a fourth socket of the additional sockets,
wherein the third and fourth sockets are assigned to different fluid circuits of the at least two fluid circuits.

11. A hydraulic block for a hydraulic unit for controlling the brake pressure of a vehicle brake system with traction control, the hydraulic block defining:
a plurality of sockets, each of which is configured to receive at least one of a pressure generator, a valve, and a pressure sensor;
a plurality of fluid connections which are configured to connect sockets of the plurality of sockets to at least two fluid circuits that are hydraulically separated from each other, wherein at least one of the plurality of sockets is assigned to each of the at least two fluid circuits, a first socket of the assigned sockets is configured to receive a first pressure sensor and a second socket of the assigned sockets is configured to receive a second pressure sensor; and
a common duct that hydraulically connects the first and second sockets which are assigned to different fluid circuits, the hydraulic block including a shut-off element arranged in the common duct, and that is configured to fluidically separate the at least two fluid circuits,
wherein the shut-off element includes a ball, which is pressed into a bore portion of the common duct that has a diameter smaller than a diameter of the ball.

Assignees

• Bosch Gmbh Robert

Inventors

• Weh Andreas

Classifications

• Y10T137/87885

  Sectional block structure · CPC title

• Y10T137/87877

  Single inlet with multiple distinctly valved outlets · CPC title

• F15B13/086

  Sensing means, e.g. pressure sensors · CPC title

• F15B13/0814

  Monoblock manifolds · CPC title

• B60T8/368 Primary

  combined with other mechanical components, e.g. pump units, master cylinders · CPC title