Title:
PRESSURE-SENSITIVE DEVICE AND METHOD OF WELDING JOINT OF PRESSURE-SENSITIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/121724
Kind Code:
A1
Abstract:
In a pressure-sensitive device that detects the pressure of fluid introduced into a cap member (2) via a joint (1), the joint (1) and the cap member (2) are securely connected. A washer-like nickel plate (3) is interposed between a flange portion (11) of the copper joint (1) and a stainless-steel cap member (21). Laser-welding is performed over the entire circumference of the outer peripheral edge (31) of the nickel plate (3). The nickel plate (3), a part of the flange portion (11), and a part of a flat portion (21) are melt and welded, and form a melt-solidified layer. The melt-solidified layer is formed over the entire circumference around an axis L between the flange portion (11) of the joint (1) and the flat portion (21) of the cap member (2). The melt-solidified layer is formed so as to enter deeply from the outer peripheral edge (31) of the flange portion (11) toward the axis L of the joint (1) between the flat portion (21) and the flange portion (11). The melt-solidified layer (A1) is composed of copper, nickel, and iron that are melt and solidified, and the joint (1) and the cap member (2) are securely welded.
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Inventors:
KANAZAKI FUMIO (JP)
HONDOH MASAHIDE (JP)
HONDOH MASAHIDE (JP)
Application Number:
PCT/JP2010/055685
Publication Date:
October 06, 2011
Filing Date:
March 30, 2010
Export Citation:
Assignee:
SAGINOMIYA SEISAKUSHO INC (JP)
KANAZAKI FUMIO (JP)
HONDOH MASAHIDE (JP)
KANAZAKI FUMIO (JP)
HONDOH MASAHIDE (JP)
International Classes:
B23K20/00; G01L19/14; F16L13/02; G01L9/00; H01H35/34
Foreign References:
| JP2004012140A | 2004-01-15 | |||
| JP2005308397A | 2005-11-04 | |||
| JP2001071150A | 2001-03-21 | |||
| JPH02256158A | 1990-10-16 | |||
| JP2007136525A | 2007-06-07 | |||
| JP2004012140A | 2004-01-15 | |||
| JP2006032072A | 2006-02-02 |
Other References:
See also references of EP 2554967A4
Attorney, Agent or Firm:
TAKINO Hideo et al. (JP)
Hideo Takino (JP)
Hideo Takino (JP)
Download PDF:
Claims:
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