To provide a solenoid valve capable of intensifying electromagnetic force.
The solenoid valve 1 is a solenoid valve operated by electromagnetic force, includes a stem, and is provided with a drive valve reciprocating along a direction in which the stem expands, a disk 30 extending to another end 33 from one end 32 interlocking with the stem and oscillating around a center shaft extending at another end 33, and a lower side electromagnet 160 arranged to face the disk 30. The lower side electromagnet 160 includes a core 161 made of magnetic body and a coil 162 wound around the core 161. The core 161 includes a butting surface 16 butting with the disk 30. The core 161 is provided with a projection section 1600 extending from the core 161 along an oscillation direction to separate from the butting surface 164. The disk 30 is isolated from the butting surface in start of the solenoid valve 1. Distance from the projection section 1600 to one end 32 of the disk 30 in start is shorter than distance L1 from one end 32 to the butting surface 164.
ASANO MASAHIKO
Toshio Morita
Tadashi Muto