IP Library › Granted Patent US 11,149,596
Granted Patent B2
US 11,149,596 · App. 16/888,837 · Granted Oct 19, 2021

Valve for variable throttling of a hydraulic flow with a fatigue-resistant mechanical means for reducing possible valve oscillations

Inventors: Andreas Lechler (Moeglingen, DE); Andrej Gardt (Abstatt, DE); Christoph Eisele (Heilbronn, DE); Edgar Kurz (Heilbronn-Horkheim, DE); Felix Schorn (Renningen, DE); Joern Kreutzer (Duelmen, DE); Marcus Biehler (Wuestenrot, DE); Michael Kloss (Ilsfeld-Auenstein, DE); Patrick Schellnegger (Ludwigsburg, DE); Wolf Stahr (Abstatt, DE)
Assignee: Robert Bosch GmbH
F01L9/10F16K15/02
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Quick Facts
Patent No.
US 11,149,596
App. No.
16/888,837
Granted
Oct 19, 2021
Kind
B2
Abstract

A valve for variable throttling of a hydraulic flow includes a tappet and a guide element in which the tappet is guided for movement in a stroke direction. The valve also includes at least one fatigue-resistant, mechanical member that locally reduces a radial play of the tappet so as to reduce possible valve oscillations.

Claims (15)

1. A valve for variable throttling of a hydraulic flow, comprising:

a tappet;

a guide element in which the tappet is guided for movement in a stroke direction; and

at least one fatigue-resistant, mechanical member that locally reduces a radial play of the tappet by applying a transverse force to the tappet during a stroke movement of the tappet so as to reduce valve oscillations, the at least one mechanical member being arranged radially outside the tappet.

2. The valve according to claim 1 , wherein the at least one mechanical member is metal.

3. The valve according to claim 1 , wherein the at least one mechanical member includes a spring.

4. The valve according to claim 3 , wherein the spring is a flexible spring.

5. The valve according to claim 4 , wherein the flexible spring extends in the stroke direction.

6. The valve according to claim 1 , wherein the at least one mechanical member includes at least two mechanical members that are distributed along a periphery around the tappet.

7. The valve according to claim 1 , wherein the at least one mechanical member is integrated at least in the guide element or is formed integrally the guide element.

8. The valve according to claim 7 , wherein the guide element includes a sleeve.

9. The valve according to claim 1 , wherein the guide element includes a resilient sleeve on which a pretensioning element is supported, and wherein the pretensioning element pretensions the tappet in the stroke direction.

10. The valve according to claim 4 , wherein the flexible spring extends transversely to the stroke direction.

11. The valve according to claim 8 , wherein the sleeve defines a cut-out region, and the at least one mechanical member is arranged in the cut-out region.

12. The valve according to claim 11 , wherein the at least one mechanical member projects radially inwardly from the sleeve into contact with an outer surface of the tappet so as to apply the transverse force to the tappet.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 27, 2021
From: LECHLER, ANDREAS; GARDT, ANDREJ; EISELE, CHRISTOPH; KURZ, EDGAR; SCHORN, FELIX; KREUTZER, JOERN; BIEHLER, MARCUS; KLOSS, MICHAEL; SCHELLNEGGER, PATRICK; STAHR, WOLF
To: ROBERT BOSCH GMBH
Reel/Frame 055139/0566 →
Priority Claims (1)
DE 10 2019 209 003.6 · Jun 19, 2019 · national
Continuity (1)
Related Publication 20200400045A1 · Dec 24, 2020