Title:
電磁ポンプ
Document Type and Number:
Japanese Patent JP7214401
Kind Code:
B2
Abstract:
To provide an electromagnetic pump capable of reducing suction force left in restoration operation for a movable iron core, to improve responsiveness of the restoration operation.SOLUTION: A movable iron core 18 sets its outer diameter smaller than an inner diameter of a stationary iron core 22, and is positioned so that its outer peripheral surface 18C faces an inner peripheral surface 23 of the stationary iron core 22 with a suction to the stationary iron core 22. A bearing member 20 is arranged at a radially inner side of the stationary iron core 22, and forms one end surface 20A substantially orthogonal to the inner peripheral surface 23 of the stationary core 22 and facing the movable iron core 18. A housing 7 made of a magnetic material has an opposite surface 13B facing a one end surface 4B of a bobbin 4 at a stationary iron core 22 side, and arranges the one end surface 20A of the bearing member 20 so as to separate from the movable iron core 18 in an axial direction with respect to the opposite surface 13B of a magnetic member of the bearing member 20.SELECTED DRAWING: Figure 2
Inventors:
Nobuhisa Watanabe
Application Number:
JP2018161173A
Publication Date:
January 30, 2023
Filing Date:
August 30, 2018
Export Citation:
Assignee:
JTEKT Fluid Power System Co., Ltd.
International Classes:
F04B17/04
Domestic Patent References:
| JP52065307U | ||||
| JP56117518U | ||||
| JP60153508U | ||||
| JP2003063600A | ||||
| JP2007234801A | ||||
| JP2008260522A | ||||
| JP2015016069A |
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