Pressure control valve for installation in piston of traction tensioner, is formed as plate, and is extended from pressure chamber of tensioner housing of traction tensioner, where hydraulic medium is guided out from pressure chamber

摘要

The pressure control valve (1) is formed as a plate (5) made of elastic material, and is extended from a pressure chamber (3) of a tensioner housing of a traction tensioner. A hydraulic medium, such as oil is guided out from the pressure chamber through a discharge opening (4) of a piston (2) at overpressure in the pressure chamber. The elastic material is formed so that a portion of the discharge opening is free during the overpressure in the pressure chamber. The plate has a slot (6) in a flat undeformed state, particularly in star shape, where the slot is extended in the plate surface. An independent claim is included for a hydraulic traction tensioner with a pressure relief valve positively held between a snap ring and a collar of the receiving area of the piston.