| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electromagnetic drive 10 capable of enhancing the drive response, and to provide a solenoid valve 1. <P>SOLUTION: An electromagnetic drive comprises: a movable body 20 having a movable core 22; a fixed core 30 having a housing section 32 which houses the movable core 22 movably in the forward direction Dg and the backward direction Dr, and a suction section 34 which sucks the movable core 22 in the forward direction Dg; a coil 70 generating a magnetic flux MF and a ring core 50 provided on the outer peripheral side of the housing section 32; and a nonmagnetic bearing 54 provided on the outer periphery 22a of the movable core 22. When the ring core 50 delivers the magnetic flux MF generated from the coil 70 to the suction section 34 via the housing section 32 and the movable core 22, the movable core 22 is driven to be sucked to the suction section 34. When the bearing 54 is slid and supported by the housing section 32 on the outer peripheral side, a magnetic gap 60 is formed between the housing section 32 and the movable core 22. A magnetic gap 60 capable of passing the magnetic flux MF is thereby ensured on the inner peripheral side of the ring core 50, over the entire range of movement of the movable body 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
