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US 10,502,336 B2Granted
Valve and assembly method
AssigneeRobert Bosch GmbH
InventorHubert Feser
Life of this patent
Estimating the term…
Abstract
A valve for installation in a valve bore of a housing or valve block includes a valve bushing for insertion into the valve bore, a guided valve piston that can be moved axially in the valve bushing, an activation section of said piston projecting above the valve bushing axially, and a valve cover that is configured to be arranged over the valve bore and that forms, together with the activation section of the valve piston, at least one activation pressure chamber.
Claims20
A valve for installing in a valve bore of a housing or of a valve block, the valve comprising:
- a valve bushing configured to be inserted into the valve bore;
- a valve piston configured to be guided in an axially movable manner in the valve bushing, the valve piston having an actuating section that projects axially below the valve bushing;
- and
- a valve cover arranged over the valve bore, wherein:
- the valve cover, together with the actuating section of the valve piston, defines at least a first actuating pressure space and a second actuating pressure space,
- the valve cover is divided axially into at least two components, including an intermediate cover that guides the actuating section in a main bore and a functional cover provided on a first side of the intermediate cover that is remote from the valve bushing, said functional cover defining at least one control channel,
- the actuating section divides the main bore into the first actuating pressure space on a side of the actuating section facing toward the functional cover and into the second actuating pressure space on a side of the actuating section facing toward the valve bushing,
- the intermediate cover has a further control channel opening into the second actuating pressure space,
- only the at least one control channel of the functional cover opens into the first actuating pressure space and only the further control channel of the intermediate cover opens into the second actuating pressure space,
- a bottom surface of the main bore of the intermediate cover is formed by an end surface of the functional cover,
- the intermediate cover does not extend axially below the end surface of the functional cover,
- the functional cover does not extend axially above the end surface of the functional cover, and
- the first side of the intermediate cover which faces the functional cover includes a standardized connection layout of, at least, a plurality of control connections through which control fluid flows, and the standardized connection layout is the same as a connection layout of a plurality of openings on an outer surface of the housing or valve block against which a second opposite side of the intermediate cover abuts.
10 more elements
A valve system comprising:
- a housing or a valve block defining a valve bore;
- and
- a valve comprising:
- a valve bushing configured to be inserted into the valve bore;
- a valve piston configured to be guided in an axially movable manner in the valve bushing, the valve piston having an actuating section that projects axially below the valve bushing;
- and
- a valve cover arranged over the valve bore,
- wherein:
- the valve cover, together with the actuating section of the valve piston, defines at least a first actuating pressure space and a second actuating pressure space,
- the valve cover is divided axially into at least two components, including an intermediate cover that guides the actuating section in a main bore and a functional cover provided on a first side of the intermediate cover that is remote from the valve bushing, said functional cover defining at least one control channel,
- the actuating section divides the main bore into the first actuating pressure space on a side of the actuating section facing toward the functional cover and into the second actuating pressure space on a side of the actuating section facing toward the valve bushing,
- the intermediate cover has a further control channel opening into the second actuating pressure space,
- only the at least one control channel of the functional cover opens into the first actuating pressure space and only the further control channel of the intermediate cover opens into the second actuating pressure space,
- a bottom surface of the main bore of the intermediate cover is formed by an end surface of the functional cover,
- the intermediate cover does not extend axially below the end surface of the functional cover,
- the functional cover does not extend axially above the end surface of the functional cover, and
- the first side of the intermediate cover which faces the functional cover includes a standardized connection layout of, at least, a plurality of control connections through which control fluid flows, and the standardized connection layout is the same as a connection layout of a plurality of openings on an outer surface of the housing or valve block against which a second opposite side of the intermediate cover abuts.
14 more elements
Dependencies are inferred from the claim text.