Hydraulic play compensation device
AssigneeSchaeffler KG
InventorsPeter Sailer, Oliver Schnell, Dieter Schmidt
Life of this patent
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Abstract
The hydraulic play compensation device, having an outer cylinder part which is closed on one side by a base and in which a piston element which lies on its inside is guided so as to be longitudinally displaceable, with a guide gap, having an oil pressure space having an oil inlet which supplies the oil supply space, and having a connecting duct controlled by a nonreturn valve between the oil supply space and the oil pressure space. For optimized removal of air which is introduced via the oil inlet, it is proposed that a ventilation path which connects the oil supply space and the guide gap is formed in the piston element downstream of the oil inlet and upstream of the connecting duct.
Claims13
A hydraulic play compensation device, comprising an outer cylinder part which is closed on one side by a base and in which a piston element which lies on its inside is guided so as to be longitudinally displaceable, with a guide gap which is necessary for its functioning being left, having an oil pressure space which is formed between said base and the piston element, having an oil supply space which is formed within the piston element, having an oil inlet which supplies the oil supply space and which does not intersect the guide gap, and having a connecting duct controlled by a nonreturn valve between the oil supply space and the oil pressure space, wherein a ventilation path which connects the oil supply space and the guide gap in every longitudinal position of the piston element, is formed in the piston element downstream of the oil inlet and upstream of the connecting duct.
A hydraulic play compensation device, comprising an outer cylinder part which is closed on one side by a base and in which a piston element which lies on its inside is guided so as to be longitudinally displaceable, with a guide gap which is necessary for its functioning being left, having an oil pressure space which is formed between said base and the piston element, having an oil supply space which is formed within the piston element, having an oil inlet which supplies the oil supply space, and having a connecting duct controlled by a nonreturn valve between the oil supply space and the oil pressure space, wherein a ventilation path which connects the oil supply space and the guide gap is formed in the piston element downstream of the oil inlet and upstream of the connecting duct, wherein the ventilation path comprises at least one ventilation duct.
Dependencies are inferred from the claim text.