| 摘要 |
A normally closed solenoid valve (100) includes a housing (10), and a valve element (21), a movable core (22), a first spring (23), a second spring (24), a coil (25), a stator core (26), and other components, which are assembled to the housing (10). The valve element (21) is arranged so as to be seatable on and unseatable from a valve seat (12c). The movable core (22) is assembled to a cylinder section (11b) of the housing (10) so as to be movable integrally with the valve element (21) in an axial direction of the movable core (22). The first spring (23) is configured to bias the valve element (21) and the movable core (22) toward the valve seat (12c). The coil (25) and the stator core (26) are configured to generate an electromagnetic force resistive to a load of the first spring (23) for the movable core (22) through energization of the coil (25). The second spring (24) is configured to apply a load smaller than and resistive to the load of the first spring (23) to the valve element (21) and the movable core (22). The normally closed solenoid valve (100) further includes a load adjusting mechanism capable of adjusting the load of the first spring (23), and a stroke adjusting mechanism capable of adjusting an unseating stroke of the valve element (21) from the valve seat (12c). |
