Direct acting solenoid actuator

摘要

A solenoid actuator comprising an armature member that engages a spool including a spool cap on an end of the spool that is axially movable relative to the spool. A bore in the spool allows fluid to flow from a control port to the spool cap, such that pressure is established in the spool cap. The pressure established in the spool cap acts on the spool with a force directly proportional to the control pressure and the fluid-contacting area inside the spool cap.

主权项

1. A solenoid actuator fluid control valve comprising:
a solenoid actuator component having:
a fixed solenoid component; anda movable armature component; and a fluid control valve component having:
a fixed nozzle body;a movable spool within the fixed nozzle body; anda spool end cap disposed over a first end of the moveable spool and between the first end of the moveable spool and the fixed nozzle body to provide a feedback pressure;wherein the spool end cap is axially movable relative to the movable spool; andwherein an exterior of the spool cap is exposed to exhaust or zero pressure and an interior of the spool cap is exposed to control pressure.