Seal for switch valves
AssigneeSchaeffler Technologies AG & Co. KG
InventorCalin Petru Itoafa
Life of this patent
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Abstract
A switch valve for a hydraulic unit, in particular a quick-acting valve for a hydraulic unit of a hydraulically variable valve gear of a reciprocating internal combustion engine, having a valve body, which is guided in an axially movable manner in a housing part and which is sealed with respect to the housing part by a seal, wherein the seal is designed as a flat seal element, which encloses the valve body in a sealing manner and which is operatively connected to an axial surface of the housing part in a sealing manner.
Claims8
A switch valve for a hydraulic unit, the switch valve comprising:
- a housing part;
- a seal;
- and
- a valve body guided for axial displacement in the housing part and sealed from the housing part through the seal,
- the seal being configured as a flat sealing element enclosing the valve body in a sealing manner and operatively connected to an axial surface of the housing part in a sealing manner, wherein the flat sealing element is arranged on a front end surface of the housing part, and wherein the flat sealing element includes a metallic, disc-shaped base body including an at least partial cladding out of the elastic material.
A switch valve for a hydraulic unit, the switch valve comprising:
- a housing part;
- a seal;
- a valve body guided for axial displacement in the housing part and sealed from the housing part through the seal,
- the seal being configured as a flat sealing element enclosing the valve body in a sealing manner and operatively connected to an axial surface of the housing part in a sealing manner;
- and
- a seating ring, the valve body including a sealing surface arranged outside of the housing part and forming a valve seat together with a counter surface arranged on the seating ring;
- and
- a spring arranged between the flat sealing element and the seating ring, the spring loading the flat sealing element in a direction of the front end surface.
Dependencies are inferred from the claim text.