Title:
CAP BELLOWS ASSEMBLY AND ACCUMULATOR
Document Type and Number:
WIPO Patent Application WO/2023/145621
Kind Code:
A1
Abstract:
A cap bellows assembly according to the present invention is for sealing an end of a bellows provided inside an outer casing of an accumulator having a bottom, a shell, and a port. The cap bellows assembly comprises: a cap body part that covers an opening of the bellows; and a cap elastic part that is provided between the cap body part and the port, and that is firmly attached to the cap body part. The cap body part has an attachment surface to which the cap elastic part is attached and which has been subjected to a zinc calcium phosphate treatment. The amount of hopeite in the attachment surface is at most 4.8%.
Inventors:
NAKANO NAOHITO (JP)
OHTA DAIJIRO (JP)
DOI TAKASHI (JP)
KUROKAWA TOMOYA (JP)
OHTA DAIJIRO (JP)
DOI TAKASHI (JP)
KUROKAWA TOMOYA (JP)
Application Number:
PCT/JP2023/001608
Publication Date:
August 03, 2023
Filing Date:
January 20, 2023
Export Citation:
Assignee:
NHK SPRING CO LTD (JP)
International Classes:
F15B1/16; C23C22/12
Foreign References:
| JP2005059840A | 2005-03-10 | |||
| JP2003301801A | 2003-10-24 | |||
| JPH0676675B2 | 1994-09-28 | |||
| JPH11247862A | 1999-09-14 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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