| 摘要 |
<p>An electromagnetic valve (100) is provided with a housing (10), a valve body (21), a movable core (22), a spring (23), a coil (24), and a stationary core (11c). The housing (10) comprises a cylinder section (11b) that houses the movable core (22) so as to be movable in the axial direction. An axial-direction intermediate section of the cylinder section (11b) is composed of a nonmagnetic section (11b1) that surrounds the outer circumference section of the axial-direction intermediate section of the cylinder section (11b), and the two sides of this nonmagnetic section (11b1) in the axial direction are composed of a one-side magnetic section (11b2) and an other-side magnetic section (11b3) that surround the outer circumference of the movable core (22). The electromagnetic valve (100) is configured such that by energizing the coil (24), an electromagnetic force is generated in a direction orthogonal to the axial direction so as to cause frictional resistance to axial movement of the movable core (22), said electromagnetic force being generated in the space between the outer circumference of the movable core (22) and the one-side magnetic section (11b2) of the cylinder section (11b) at one side of the nonmagnetic section (11b1) in the axial direction, and in the space between the outer circumference of the movable core (22) and the other-side magnetic section (11b3) of the cylinder section (11b) at the other side of the nonmagnetic section (11b1) in the axial direction.</p> |
