| 摘要 |
<p>A solenoid valve assembly (10) includes a valve body (11) and an outwardly extending core tube assembly (12) comprising a core tube, a fixed pole piece (31) and a slidable plunger (32) for actuating a valve (24, 25) in the valve body (11). An electromagnetic coil assembly (14) comprising a flux frame (50) and a cylindrical coil (51) is slidably and removably supported on the core tube, and is secured in place by a contractible ring (15) with a shoulder (82,84) engaged in a groove (40) in the outer end of the core tube (12). The ring (15) is an injection moulded plastics part and is split, having a tongue and socket interconnection (75, 76) with a plurality of ratchet teeth (90, 91) thereon to provide adjustable constriction of the ring (15). A pair of integral spring fingers (78,79) are provided on opposite sides of the ring (15) axially to bias the coil assembly (14) against the valve body (11).</p> |
