Solenoid drive device
US-2015179322-A1 · Jun 25, 2015 · US
Solenoid drive device
US9318246B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9318246-B2 |
| Application number | US-201314408421-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 26, 2013 |
| Priority date | Jul 27, 2012 |
| Publication date | Apr 19, 2016 |
| Grant date | Apr 19, 2016 |
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Abstract
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An inexpensive solenoid drive device with high magnetic performance is implemented in which a portion accommodating a plunger and a portion attracting the plunger are integrated with a core as a ferromagnetic body. A core includes a magnetic flux limiting portion that is located in a region on the biasing direction side of a first imaginary boundary plane and that is formed so as to have a small thickness in a radial direction, and an increased diameter portion that is formed so that its thickness the radial direction is increased in a continuous or stepwise manner from the first imaginary boundary plane toward the opposite biasing direction side. The increased diameter portion has a recessed portion whose outer surface is recessed toward a radial inner surface with respect to a predetermined increased diameter reference line in axial section of the core.
First claim
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The invention claimed is: 1. A solenoid drive device including a cylindrical coil, a core placed radially inward of the cylindrical coil and having a bottomed cylindrical inner surface, and a plunger that can be displaced along an axial direction of the core and is subjected to biasing force in a direction in which the plunger is separated from a bottom surface portion of the core along the axial direction, and that is placed radially inward of the core, the solenoid drive d…
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- What does patent US9318246B2 cover?
- An inexpensive solenoid drive device with high magnetic performance is implemented in which a portion accommodating a plunger and a portion attracting the plunger are integrated with a core as a ferromagnetic body. A core includes a magnetic flux limiting portion that is located in a region on the biasing direction side of a first imaginary boundary plane and that is formed so as to have a smal…
- Who is the assignee on this patent?
- Aisin Aw Co
- What technology area does this patent fall under?
- Primary CPC classification H01F7/081. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 19 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).