STEUERGERAET FUER HYDROSTATISCHE LENKEINRICHTUNGEN

摘要

The invention relates to a hydrostatic power steering unit of the type having a gerotor gear set forming a metering motor and a valve unit for routing pressurized fluid from an inlet port selectively via expansible chambers of the gerotor gear set to either one of two motor ports while connecting the other one of the motor ports to an outlet port. The housing of the valve unit, which has inner and outer rotary sleeve members, is arranged adjacent the gerotor gear set. A cardan shaft connects the outer sleeve member to the gerotor star member, a gear head connected to the adjacent end of the outer sleeve is disposed internally of the inner sleeve member. Supply and drain ports and motor ports connectable to an external servomotor are provided in a cover plate which is fastened to the gerotor gear set on the side thereof opposite from the valve unit. Some of the axial bores in the gerotor ring gear normally used as bolt holes are used as passages for connecting the supply port and the motor ports to the interior of the valve unit on the other side of the gerotor.