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公开(公告)号：US20230386719A1
公开(公告)日：2023-11-30
申请号：US18187826
申请日：2023-03-22
申请人： MIKUNI CORPORATION
发明人： Toshiki OGASAWARA , Hirofumi SAITO
CPC分类号： H01F7/121 , H01F7/081 , H01F7/1607
摘要： A solenoid actuator 1 includes: a coil 3; a first stator 10 that includes a first yoke 14 and a cylindrical guide 30 fixed to an inner peripheral side of the first yoke 14; a second stator 20 arranged to face the first stator 10 in an axial direction so as to form a magnetic path 4 around the coil 3 together with the first stator 10; and a mover 50 configured to move in the axial direction toward the second stator 20 from an original position radially inward of the first stator by a magnetic force generated by energizing the coil 3. The cylindrical guide 30 includes: a magnetic tube 32 disposed in contact with an inner peripheral surface of the first yoke 14; and a non-magnetic layer 34 covering an inner peripheral surface of the magnetic tube 32. A minimum distance d1 between the second stator 20 and the magnetic tube 32 is greater than a minimum distance d2 between the second stator 20 and the mover 50 at the original position.
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公开(公告)号：US20210131582A1
公开(公告)日：2021-05-06
申请号：US17030393
申请日：2020-09-24
申请人： MIKUNI CORPORATION
摘要： An electromagnetic switching valve includes: a sleeve; a spool; an electromagnetic actuator, including a plunger having a through passage and a stator exerting a magnetomotive force on the plunger; and a transmission member of a tubular shape, interposed between the plunger and the spool and transmitting a driving force. The stator includes an insertion hole through which the transmission member is inserted. The transmission member includes: a facing wall facing the through passage; a first internal passage formed closer to the plunger than the facing wall and communicating with the through passage; a first opening formed closer to the plunger than the insertion hole and opening the first internal passage in a radial direction; second internal passages formed closer to the spool than the facing wall; and second openings formed closer to the spool than the insertion hole and opening the second internal passages in the radial direction.
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公开(公告)号：US20180315533A1
公开(公告)日：2018-11-01
申请号：US15955184
申请日：2018-04-17
申请人： MIKUNI CORPORATION
发明人： Toshiki OGASAWARA
摘要： An electromagnetic actuator in which magnetic force from a permanent magnet causes a stator core and a first plunger to attract each other, and electromagnetic force generated by energizing an electromagnetic coil causes a mover to resist against the magnetic force from the permanent magnet to move in an axial direction separating from a front end portion of the stator core, wherein a ring member provided on the mover is inserted in the axial direction into a hole portion provided in a bottom wall member of a yoke, and an overlap size between the ring member and the bottom wall member is increased when the mover moves relative to the stator core in a separating direction, so that a magnetism transmission quantity from the permanent magnet passing through an overlap portion between the ring member and the bottom wall member is inhibited from being reduced.
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公开(公告)号：US20210131581A1
公开(公告)日：2021-05-06
申请号：US17030390
申请日：2020-09-24
申请人： MIKUNI CORPORATION
发明人： Toshiki OGASAWARA , Masashi UEDA
摘要： An electromagnetic switching valve includes: a sleeve, defining a port communicating with an oil passage; a spool, reciprocally movably disposed on an axis in the sleeve, opening and closing the port; an electromagnetic actuator, including a plunger disposed on the axis and a stator; a transmission member interposed between the plunger and the spool; and an energizing spring, energizing the spool toward the plunger. The transmission member includes a first abutting part of a convex shape tiltably abutting against a receiving recess of the plunger; a second abutting part of a concave shape abutting against a convex end of the spool; and an outer peripheral wall that, in a state of being deviated from the axis and inclined, regulates the inclination by contacting an inner peripheral surface of the sleeve or the stator.
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公开(公告)号：US20240204641A1
公开(公告)日：2024-06-20
申请号：US18467870
申请日：2023-09-15
申请人： MIKUNI CORPORATION
发明人： Takeshi KUDO , Toshiki OGASAWARA
摘要： A solenoid actuator 1 includes: a coil 3; a first stator 10 and a second stator 20 disposed with an air gap 11 therebetween in an axial direction so as to form a magnetic path 4 around the coil 3; and a mover 50 configured to be movable in the axial direction to a maximum stroke position (X=Xmax) from an original position (X=0) on a radially inner side of the first stator 10 toward the second stator 20 by a magnetic force generated by energizing the coil 3. The mover 50 has an annular projection 100 projecting in the axial direction from a peripheral edge portion of the mover 50. The second stator 20 includes: a second yoke 24; and a second press part 40 made of a magnetic material and disposed on an inner peripheral side of the second yoke 24 so as to at least partially form an annular recess 120 for receiving the annular projection 100 of the mover 50 at the maximum stroke position (X=Xmax).
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公开(公告)号：US20210131580A1
公开(公告)日：2021-05-06
申请号：US17030387
申请日：2020-09-24
申请人： MIKUNI CORPORATION
发明人： Toshiki OGASAWARA , Masashi UEDA
摘要： An electromagnetic switching valve includes: a sleeve, defining a port communicating with an oil passage; a spool, reciprocally movably disposed on a predetermined axis in the sleeve, opening and closing the port; an electromagnetic actuator, including a plunger disposed on the axis and a stator exerting magnetomotive force on the plunger; and a tubular transmission member, disposed on the axis to be interposed between the plunger and the spool and transmit driving force. The stator includes an insertion hole through which the transmission member is inserted. The transmission member includes a regulated part regulated not to deviate from a range allowing an upper end of the transmission member to be inserted into the insertion hole of the stator when the transmission member is dropped and assembled into the sleeve from a vertical direction for a lower end of the transmission member to abut against the spool integrated into the sleeve.
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