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US 8,047,227 B2Granted
Pressure limiting valve
AssigneeRobert Bosch GmbH
InventorsThomas Buchberger, Franz Weixelberger, Wolfgang Hoeller
Life of this patent
Estimating the term…
Abstract
The invention relates to a pressure limiting valve. The pressure limiting valve comprises a valve holder a valve insert connected to the valve holder a valve piston slidably supported in the valve insert and a compression spring acting on the valve piston in the closing direction. Between the valve piston and the compression spring an adjusting shim is disposed such that the compression spring is braced on one end on a bottom piece of the valve holder and on the other on a face of the adjusting shim facing away from the valve piston.
Claims16
A pressure limiting valve (10), consisting of
- a single piece valve holder (1) having a longitudinal axis (A1),
- a single piece valve insert (2) connected to the valve holder (1),
- a single piece valve piston (3) supported slidably in the valve insert (2),
- a compression spring, acting upon the valve piston (3) with a pressure force acting in the closing direction, and
- a single piece adjusting shim (4) disposed between the valve piston (3) and the compression spring (5) such that the compression spring (5) is braced on one end on a bottom piece of the valve holder (1) and on the other on a face of the adjusting shim (4) facing away from the valve piston (3),
- wherein the valve holder (1) is cup-shaped and a cylindrical wall of the valve holder has at least two subregions (1a, 1b), each with a different inside diameter (D1, D2), and the subregions (1a, 1b) merge with one another in steplike fashion,
- wherein the subregion (1b) of the valve holder (1) embraces the valve insert (2) from the outside, so that the steplike transition of the valve holder (1) formed by the different diameter regions (diameters D1, D2) is seated on and surrounds a portion of the valve insert (2) for establishing the connection between the valve insert (2) and the valve holder (1),
- wherein the valve holder (1) has an outflow conduit (1c) in the cylindrical wall of the valve holder, the outflow conduit being oriented at an oblique angle with respect to the longitudinal axis (A1) of the valve holder (1), and
- wherein the valve piston (3) has an end surface and a outer cylindrical circumferential surface, and at least one fiat place (3a, 3a.1, 3a.2, 3a.3) is provided on the outer cylindrical circumferential surface of the valve piston (3), and wherein the flat places (3a) extend over only a portion of the length of the valve piston (3).
6 more elements
A pressure limiting valve (10), consisting of
- a single piece valve holder (1) having a longitudinal axis (A1),
- a single piece valve insert (2) connected to the valve holder (1),
- a single piece valve piston (3) supported slidably in the valve insert (2),
- a compression spring, acting upon the valve piston (3) with a pressure force acting in the closing direction, and
- a single piece adjusting shim (4) disposed between the valve piston (3) and the compression spring (5) such that the compression spring (5) is braced on one end on a bottom piece of the valve holder (1) and on the other on a face of the adjusting shim (4) facing away from the valve piston (3),
- wherein the valve holder (1) is cup-shaped and a cylindrical wall of the valve holder has at least two subregions (1a, 1b), each with a different inside diameter (D1, D2), and the subregions (1a, 1b) merge with one another in steplike fashion,
- wherein the subregion (1b) of the valve holder (1) embraces the valve insert (2) from the outside, so that the steplike transition of the valve holder (1) formed by the different diameter regions (diameters D1, D2) is seated on and surrounds a portion of the valve insert (2) for establishing the connection between the valve insert (2) and the valve holder (1),
- wherein the valve holder (1) has an outflow conduit (1c) in the cylindrical wall of the valve holder , the outflow conduit being oriented at an oblique angle with respect to the longitudinal axis (A1) of the valve holder (1), and
- wherein three flat places (3a, 3a.1, 3a.2, 3a.3) are provided on the outer circumference of the valve piston (3), which flat places are distributed uniformly over the circumference of the valve piston (3), the flat places (3a) being disposed on the valve piston (3) such that they extend parallel to the longitudinal axis of the valve piston (3).
6 more elements
A pressure limiting valve (10), consisting of
- a single piece valve holder (1) having a longitudinal axis (A1),
- a single piece valve insert (2) connected to the valve holder (1),
- a single piece valve piston (3) supported slidably in the valve insert (2),
- a compression spring, acting upon the valve piston (3) with a pressure force acting in the closing direction, and
- a single piece adjusting shim (4) disposed between the valve piston (3) and the compression spring (5) such that the compression spring (5) is braced on one end on a bottom piece of the valve holder (1) and on the other on a face of the adjusting shim (4) facing away from the valve piston (3),
- wherein the valve holder (1) is cup-shaped and a cylindrical wall of the valve holder has at least two subregions (1a, 1b), each with a different inside diameter (D1, D2), and the subregions (1a, 1b) merge with one another in steplike fashion,
- wherein the subregion (1b) of the valve holder (1) embraces the valve insert (2) from the outside, so that the steplike transition of the valve holder (1) formed by the different diameter regions (diameters D1, D2) is seated on and surrounds a portion of the valve insert (2) for establishing the connection between the valve insert (2) and the valve holder (1),
- wherein the valve holder (1) has an outflow conduit (1c) in the cylindrical wall of the valve holder , the outflow conduit being oriented at an oblique angle with respect to the longitudinal axis (A1) of the valve holder (1), and
- wherein the valve insert (2) has a cup-shaped recess (2a), in which the adjusting shim (4) is slidably supported.
6 more elements
A pressure limiting valve (10), consisting of
- a single piece valve holder (1) having a longitudinal axis (A1),
- a single piece valve insert (2) connected to the valve holder (1),
- a single piece valve piston (3) supported slidably in the valve insert (2),
- a compression spring, acting upon the valve piston (3) with a pressure force acting in the closing direction, and
- a single piece adjusting shim (4) disposed between the valve piston (3) and the compression spring (5) such that the compression spring (5) is braced on one end on a bottom piece of the valve holder (1) and on the other on a face of the adjusting shim (4) facing away from the valve piston (3),
- wherein the valve holder (1) is cup-shaped and a cylindrical wall of the valve holder has at least two subregions (1a, 1b), each with a different inside diameter (D1, D2), and the subregions (1a, 1b) merge with one another in steplike fashion,
- wherein the subregion (6b) of the valve holder (1) embraces the valve insert (2) from the outside, so that the steplike transition of the valve holder (1) formed by the different diameter regions (diameters D1, D2) is seated on and surrounds a portion of the valve insert (2) for establishing the connection between the valve insert (2) and the valve holder (1),
- wherein the valve holder (1) has an outflow conduit (1c) in the cylindrical wall of the valve holder , the outflow conduit being oriented at an oblique angle with respect to the longitudinal axis (A1) of the valve holder (1), and
- wherein the valve insert (2) has a cup-shaped recess (2a), in which the adjusting shim (4) is slidably supported, and
- wherein the diameter of the adjusting shim is greater than the diameter of the steplike transition so that the steplike transition holds the adjusting shim within the cup-shaped recess.
7 more elements
Dependencies are inferred from the claim text.