Title:
電磁ポンプ
Document Type and Number:
Japanese Patent JP5136533
Kind Code:
B2
Abstract:
A piston is slidably provided in a cylinder and partitions a first pump chamber, and a second pump chamber connected to an object to be operated. A first on-off valve is provided between the first pump chamber and the outside. A second on-off valve is provided in a connecting flow passage that connects the first pump chamber and the second pump chamber to each other. When the piston is moved forward by an electromagnetic force of a solenoid portion, a capacity of the first pump chamber decreases, and a capacity of the second pump chamber increases. When the piston is moved backward by a biasing force of a spring, the capacity of the first pump chamber increases, and the capacity of the second pump chamber decreases. A pressure receiving area of the front face of the piston is larger than that of the back face thereof.
Inventors:
Tetsuya Shimizu
Kazuhiko Kato
Fujii Noriomi
Kazunori Ishikawa
Kazuhiko Kato
Fujii Noriomi
Kazunori Ishikawa
Application Number:
JP2009226746A
Publication Date:
February 06, 2013
Filing Date:
September 30, 2009
Export Citation:
Assignee:
Aisin AW Co., Ltd.
International Classes:
F04B17/04; F04B5/00; F04B5/02
Domestic Patent References:
| JP2006169993A | ||||
| JP10299642A | ||||
| JP11082293A | ||||
| JP2009007976A |
Attorney, Agent or Firm:
Aitec International Patent Office