Title:
SOLENOID DEVICE
Document Type and Number:
Japanese Patent JP2019071378
Kind Code:
A
Abstract:
To provide a solenoid device which restrains occurrence of overshoot, and the like, without impairing suction force.SOLUTION: A solenoid device has a main suction part 24 of a core 20 where a diameter expansion part 401, expanding an external-diameter in multistep taper from a thin wall part 22 toward a thick wall part 25, is formed. Intersection point of the external-diameter surface of the thin wall part 22 and a first angle part 42 is defined as a taper origin, i.e., point A, intersection point of the external-diameter surface of the thick wall part 25 and a third angle part 46 is defined as a taper endpoint, i.e., point B, and a virtual conical surface obtained by turning a straight, connecting the points A and B, around a medial axis is defined as a reference conical surface Sref. The external-diameter surfaces of the first angle part 42, the second angle part 44 and the third angle part 44 of the diameter expansion part 401 are located farther radial outside than the reference conical surface Sref (area condition). A first angle α, a second angle β, a third angle γ and a reference angle θ satisfy a relation of (α≥θ, θ≥γ, θ>β), (α≥γ>β) (angle condition).SELECTED DRAWING: Figure 3
Inventors:
NAGASAKI KANEHISA
ANDO MOTOYOSHI
ANDO MOTOYOSHI
Application Number:
JP2017197535A
Publication Date:
May 09, 2019
Filing Date:
October 11, 2017
Export Citation:
Assignee:
DENSO CORP
International Classes:
H01F7/16; F16K31/06
Domestic Patent References:
| JP2017157790A | 2017-09-07 | |||
| JP2017075650A | 2017-04-20 | |||
| JP2006118701A | 2006-05-11 | |||
| JP2006114625A | 2006-04-27 | |||
| JP2012119367A | 2012-06-21 | |||
| JPH0360663U | 1991-06-14 | |||
| JP2014041995A | 2014-03-06 | |||
| JP6094309B2 | 2017-03-15 | |||
| JP2009127692A | 2009-06-11 |
Foreign References:
| WO2011090256A1 | 2011-07-28 | |||
| US20150179322A1 | 2015-06-25 |
Attorney, Agent or Firm:
Masaki Hattori