Invention Grant
US07992839B2 Electrohydraulic valve having a solenoid actuator plunger with an armature and a bushing 有权
电液阀具有带电枢和套管的螺线管致动器柱塞

Electrohydraulic valve having a solenoid actuator plunger with an armature and a bushing
Abstract:
A solenoid operated valve has a valve body with a plurality of ports and a spool slideable within the valve body to interconnect the ports in different combinations. An actuator includes a solenoid coil assembly and an armature slideably received in the solenoid coil assembly. A bushing has a cylindrical body from which a push member projects into engagement with the spool and from which a coupling shaft extends into an aperture in the armature. A passage is provided in the bushing to allow fluid to flow between opposites sides as the bushing slides in the solenoid coil assembly. The cylindrical body rides in the solenoid coil assembly and has a plurality of external grooves that enable fluid to pass around the body.
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