Miniature high performance solenoid valve

摘要

A solenoid valve assembly includes an armature having a longitudinal axis and an ovular cross-section, the armature being moveable along the longitudinal axis from a first position to a second position, and a bobbin including a solenoid coil configured to electromagnetically move the armature when energized. The bobbin defines a recess also having an ovular cross section for receiving the armature and restricting lateral movement of the armature, thereby providing a linear actuation path for the armature along the longitudinal axis. A flux coupler and a flux bracket form a magnetic circuit with the bobbin to electromagnetically move the armature. The flux bracket has a pole piece with a commensurate ovular cross-section that limits the movement of the armature along the longitudinal axis, thereby determining a stroke length of the armature. During manufacture, the flux bracket, and therefore the pole piece, are moved relative to the flux coupler to set the stroke length.

主权项

1. A solenoid valve assembly comprising:
an armature having a longitudinal axis, the armature being moveable along the longitudinal axis from a first position to a second position; and a bobbin including a solenoid coil configured to electromagnetically move the armature along the longitudinal axis from the first position to the second position when energized; wherein the armature has an ovular transverse cross section; the solenoid valve assembly further comprising a flux coupler and a flux bracket, wherein a magnetic circuit to electromagnetically move the armature comprises the flux coupler, the flux bracket, and the armature; wherein the flux bracket has a pole piece that limits the movement of the armature along the longitudinal axis, thereby determining a stroke length of the armature; and wherein one of the flux coupler or flux bracket includes a plurality of ridges and the other includes a plurality of slots, wherein the flux coupler and flux bracket are slidably moveable relative to each other to adjust the position of the pole piece.