Title:
SOLENOID
Document Type and Number:
WIPO Patent Application WO/2020/110881
Kind Code:
A1
Abstract:
A solenoid (100, 100a to 100h) is provided with: a coil (20) which generates magnetic force when energized; a columnar plunger (30) which slides in an axis direction (AD); a yoke (10, 10b, 10d) disposed along the axis direction; a bottom part (14) facing a base end surface (34) of the plunger; and a stator core (40, 40a, 40g). The stator core is provided with: a magnetic attraction core (50) for magnetically attracting the plunger; a sliding core (60, 60a) which has a cylindrical core part (61, 61a) arranged radially outside the plunger, and a magnetic flux transfer part (65, 65a) which is formed radially outward from an end part (62, 62a) of the core part and performs transfer of magnetic flux between the yoke and the plunger through the core part; and a magnetic flux passage suppression part (70, 70g, 70h) for suppressing passage of magnetic flux between the sliding core and the magnetic attraction core.
Inventors:
SASAO KAZUHIRO (JP)
Application Number:
PCT/JP2019/045565
Publication Date:
June 04, 2020
Filing Date:
November 21, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H01F7/16; F16K31/06
Foreign References:
| JP2013084728A | 2013-05-09 | |||
| JP2012204574A | 2012-10-22 | |||
| JP2017161014A | 2017-09-14 | |||
| JP2006348982A | 2006-12-28 |
Attorney, Agent or Firm:
TOKKYO GYOMUHOJIN MEISEI INTERNATIONAL PATENT FIRM (JP)
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