Title:
ELECTROMAGNETIC VALVE
Document Type and Number:
Japanese Patent JP3547115
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To attract armature to an electro-magnet reliably, while reducing power consumption of an electromagnet valve.
SOLUTION: In this electromagnetic driven valve, an assist magnet 67 is provided inside of a lower core 62. When an armature 50 reaches near the lower core 62, magnetic flux generated by the assist magnet passes through the armature 50. The assist magnet 67 is arranged inside the lower core 62 at a predetermined distance from a lower coil 60. When the assist magnet 67 is arranged apart from the lower coil 60, intensity of diamagnetic field acted on the assist magnet 67 is reduced. Accordingly, demagnetization of the assist magnet 67 is prevented without making the thickness of the assist magnet 67 larger. When the thickness of the assist magnet 67 is kept small, electromagnetic resistance against magnetic flux generated by a second electromagnet is reduced.
Inventors:
Takashi Deo
Tatsuo Iida
Hiroyuki Hattori
Masahiko Asano
Kadowaki Virtue
Akihiro Yanagiuchi
Fuwa Toshio
Yukio Inaguma
Toshifumi Arakawa
Tatsuo Iida
Hiroyuki Hattori
Masahiko Asano
Kadowaki Virtue
Akihiro Yanagiuchi
Fuwa Toshio
Yukio Inaguma
Toshifumi Arakawa
Application Number:
JP16382898A
Publication Date:
July 28, 2004
Filing Date:
June 11, 1998
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
Toyota Central R & D Labs.
Toyota Central R & D Labs.
International Classes:
F01L9/04; F16K31/06; H01F7/16; H02K33/02; (IPC1-7): F01L9/04; F16K31/06; H01F7/16; H02K33/02
Domestic Patent References:
| JP5280316A | ||||
| JP84546A |
Attorney, Agent or Firm:
Tadahiko Ito
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