Valve unit with axial pressure medium unit

• US 9,719,605 B2
• Filed: 04/04/2013
• Issued: 08/01/2017
• Est. Priority Date: 06/13/2012
• Status: Active Grant

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: Ross, Christoph, Backer, Alexander, Groschel, Josef
• Primary Examiner(s): Schneider, Craig
• Assistant Examiner(s): NICHOLS, PHYLLIS M
• Application Number:
  US14/407,533
• Publication Number:
  US 20150184765A1
• Time in Patent Office: 1,580 Days
• CPC Class Codes: F01L 1/344 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
• CPC Class Codes: F01L 2001/34426 Oil control valves
• CPC Class Codes: F01L 2001/3444 Oil filters
• CPC Class Codes: F16K 15/063 the valve being loaded by a spring
• CPC Class Codes: F16K 15/066 with a plurality of valve members
• CPC Class Codes: Y10T 137/7838 Plural
• CPC Class Codes: Y10T 137/7922 Spring biased

Abstract

A valve element for a hydraulic control device, in particular valve sleeve (1) or valve housing for a control valve on internal combustion engines or transmissions of motor vehicles, wherein the valve element has a displaceable control piston (2) which is subjected to load on one side by a spring (3) which is supported on a spring support (4) which is fixed to the valve element. The spring support (4) has at least one opening (7) which is connected to a pressure medium line, and the pressure medium line is in the form of a pressure medium inlet line. An axial filter (8) is arranged at the opening (7) of the spring support (4) and/or the opening (7) of the spring support (4) is provided with a check valve (9).

Claims

1. A valve element for a hydraulic control device, for a control valve on internal combustion engines or transmissions of motor vehicles, the valve element comprising a displaceable control piston, a spring which is directly supported against a spring contact surface defined by a spring support which is fixed to the valve element, the spring applying a force on one side of the control piston, the spring support has at least one opening which is connected to a pressure medium line and is defined radially inwardly from the spring contact surface, the pressure medium line is a pressure medium inlet line, and an axial filter is arranged directly in the at least one opening of the spring support, the axial filter is arranged perpendicular to a longitudinal axis of the spring, and the axial filter is integrally formed with the spring support.

2. The valve element as claimed in claim 1, wherein the spring support and the axial filter are formed as a structural unit.

3. The valve element as claimed in claim 1, wherein the spring support is a plastics injection-molded part which has integrated therein a filter fabric of the axial filter.

4. The valve element as claimed in claim 1, wherein the spring support has at least one projection on an outer circumference thereof, and in that the at least one projection is placeable in contact with a recess on an inner circumference of a valve sleeve.

5. The valve element as claimed in claim 1, wherein the spring support has a support plate which is connected to the spring and which is supported on the spring support.

6. The valve element as claimed in claim 1, wherein the spring support has a support plate which is connected to the spring and which is fixed to the spring support.

7. The valve element as claimed in claim 1, further comprising a check valve provided for the at least one opening, and the axial filter, the check valve, and the support plate are installed in sequence as viewed in a flow direction of the pressure medium.

8. The valve element as claimed in claim 1, wherein the valve element is a valve sleeve or a valve housing.

9. The valve element as claimed in claim 6, wherein the spring is integrally fixed to the spring support by insert molding.

10. The valve element as claimed in claim 1, wherein the axial filter engages an entire radially inner periphery of the at least one opening.