초록 ▼

A proportional variable force solenoid valve comprises a non-magnetic housing having a solenoid and a permanent magnet armature movable by the solenoid in response to current applied to the solenoid, a coil compression spring for biasing the armature in a direction to establish a valve fluid pressur

A proportional variable force solenoid valve comprises a non-magnetic housing having a solenoid and a permanent magnet armature movable by the solenoid in response to current applied to the solenoid, a coil compression spring for biasing the armature in a direction to establish a valve fluid pressure response to solenoid current, and a valve housing closure engaging the spring and permanently deformed to position the closure relative to the spring in a manner to adjust the valve response. The size of the valve is reduced by providing a permanent magnet armature of reduced length having a flat outermost axial end which is engaged by the spring. A plate spring retainer is disposed on the flat axial end of the permanent magnet armature and is received with clearance in an enlarged longitudinal bore region of the solenoid coil bobbin.

대표청구항 ▼

[ We claim:] [1.] A proportional variable force solenoid valve for controlling the pressure of a fluid in a fluid control system, comprising a solenoid coil, an armature movable in response to electrical current applied to the solenoid coil and to a permanent magnetic field of permanent magnet means

[ We claim:] [1.] A proportional variable force solenoid valve for controlling the pressure of a fluid in a fluid control system, comprising a solenoid coil, an armature movable in response to electrical current applied to the solenoid coil and to a permanent magnetic field of permanent magnet means, spring means for biasing the armature in a direction to establish a valve fluid pressure response to solenoid coil current, and a valve housing closure having a peripheral region for engaging a valve housing, a recessed region having a relatively smaller cross-section than said peripheral region disposed inwardly thereof, and a central region engaging said spring means and having an indentation therein from permanent deformation imparted selectively to said central region in a direction opposing said spring means in a valve assembled condition to position said valve housing closure relative to said spring means in a manner that said valve exhibits adjusted valve fluid pressure response to solenoid coil current in the valve assembled condition.