Solenoid valve for controlling the brake pressure of a wheel brake

Patent metadata

Field	Value
Publication number	US-11390259-B2
Application number	US-201716340960-A
Country	US
Kind code	B2
Filing date	Sep 20, 2017
Priority date	Oct 18, 2016
Publication date	Jul 19, 2022
Grant date	Jul 19, 2022

Abstract

A solenoid valve, for controlling a brake pressure of a wheel brake of a slip-regulatable hydraulic brake system for a motor vehicle, includes a valve element, valve insert, valve seat, spring device, electromagnetic actuator, and armature. The valve element is longitudinally movably positioned at least partially in the valve insert, positioned between the armature and the valve seat, and configured to interact with the valve seat. The spring device, in an assembled position, has a force component acting on the valve element in an opening direction with respect to the valve seat. The electromagnetic actuator is configured to act on the valve element in a closing direction with respect to the valve seat. The valve element has a contact surface operatively connecting the valve element and armature, and configured such that a central axis of the valve element and the contact surface form a non-rectangular intersection angle.

First claim

The invention claimed is:

1. A solenoid valve for controlling a brake pressure of a wheel brake of a slip-controllable hydraulic brake system of a motor vehicle, the solenoid valve comprising:
a valve insert;
a valve seat;
an armature;
a valve element positioned between the armature and the valve seat, and positioned at least partly in the valve insert in a longitudinally movable manner so as to be configured to interact with the valve seat, wherein:
the valve element includes a contact surface that operatively connects that valve element to the armature; and
the contact surface is configured such that a central axis of the valve element and the contact surface form a non-right-angled intersection;

a spring device with a force component that acts on the valve element, in an installed position of the valve element, in an opening direction with respect to the valve seat; and
an electromagnetic actuator configured to actuate the valve element in a closing direction with respect to the valve seat.

2. The solenoid valve as claimed in claim 1 , wherein:
the valve element further includes at least one projection formed on an end of the valve element; and
the at least one projection defines the contact surface.

3. The solenoid valve as claimed in claim 2 , wherein the non-right-angled intersection has a predetermined intersection angle.

4. The solenoid valve as claimed in claim 3 , wherein the intersection angle has a magnitude such that the contact surface enables a movement of the armature in an axial direction without tilting of the armature.

5. The solenoid valve as claimed in claim 3 , wherein the intersection angle has a magnitude such that distortions on the end of the valve element caused during production of the end are compensated for by the intersection angle.

6. The solenoid valve as claimed in claim 3 , wherein the at least one projection has a flat surface that forms the contact surface.

7. The solenoid valve as claimed in claim 3 , wherein a magnitude of the intersection angle is defined by at least one respective height of the at least one projection.

8. The solenoid valve as claimed in claim 2 , wherein at least two projections of a same height are formed on the end of the valve element.

9. The solenoid valve as claimed in claim 2 , wherein at least two projections of different heights are formed on the end of the valve element.

10. The solenoid valve as claimed in claim 2 , wherein three projections or four projections are formed on the end of the valve element.

11. The solenoid valve as claimed in claim 1 , wherein the valve element further includes an end with a profile having raised portions that define the contact surface.

Assignees

• Bosch Gmbh Robert

Inventors

• Ertle Marcus
• Steingass Stephan
• Bodmann Carsten
• Bartosch Hans-Peter
• Knackert Stephan
• Mueller Philipp

Classifications

• G05D16/2022

  actuated by a proportional solenoid (throttling means G05D16/2024) · CPC title

• B60T8/341

  Systems characterised by their valves (B60T8/36, B60T8/38 take precedence) · CPC title

• B60T13/686 Primary

  in hydraulic systems or parts thereof · CPC title

• B60T2270/10

  ABS control systems · CPC title

• B60T8/363

  in hydraulic systems (B60T8/3655, B60T8/3675 and B60T8/369 take precedence) · CPC title