Title:
ELECTROMAGNETIC VALVE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/109886
Kind Code:
A1
Abstract:
The present invention is an electromagnetic valve comprising a pipe formed from a ferromagnetic material containing 15 mass% to 18 mass% Cr, an electromagnetic coil, and a valve body. A portion of the pipe has a modified section. The modified section has a configuration in which an Ni-containing material component is mixed in the ferromagnetic material component. e/d, which is the ratio of the maximum deformation e on the outer circumferential surface - side of the modified section with respect to the wall thickness d of the pipe near the modified section, is 0.5 or less , and c/d, which is the ratio of the maximum deformation c on the inner circumferential surface-side of the modified section with respect to the pipe wall thickness d , is 0.5 or less. As a result, it is possible to obtain a pipe of high dimensional precision with locally weakened magnetism, and an electromagnetic valve using said pipe.
Inventors:
OKAMOTO SHINYA (JP)
ZHANG XUDONG (JP)
KOBAYASHI NOBUAKI (JP)
SAITO TAKAHIRO (JP)
YAMAZAKI AKIHIRO (JP)
ZHANG XUDONG (JP)
KOBAYASHI NOBUAKI (JP)
SAITO TAKAHIRO (JP)
YAMAZAKI AKIHIRO (JP)
Application Number:
PCT/JP2015/085982
Publication Date:
June 29, 2017
Filing Date:
December 24, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16K31/06; F02M51/06; F02M61/16
Domestic Patent References:
| WO2012172864A1 | 2012-12-20 |
Foreign References:
| JP2000021628A | 2000-01-21 | |||
| JPH06279965A | 1994-10-04 | |||
| JP2001012636A | 2001-01-16 | |||
| JP2001087875A | 2001-04-03 | |||
| JP2004281737A | 2004-10-07 | |||
| JP2007318009A | 2007-12-06 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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