公开(公告)号：EP4474657A1

公开(公告)日：2024-12-11

申请号：EP23746834.3

申请日：2023-01-20

Applicant: NHK Spring Co., Ltd.

Inventor： NAKANO, Naohito ,  OHTA, Daijiro ,  DOI, Takashi ,  KUROKAWA, Tomoya

IPC: F15B1/16 ,  C23C22/12

Abstract: A cap bellows assembly according to the present invention is a cap bellows assembly that seals one end of a bellows provided inside an exterior body of an accumulator, the accumulator including a bottom, a shell, and a port, the cap bellows assembly including a cap body that covers an opening of the bellows, and a cap elastic portion provided between the cap body and the port and fixed to the cap body, wherein in the cap body, a bonding surface to which the cap elastic portion is bonded is subjected to a zinc calcium phosphate treatment, and a hopeite amount on the bonding surface is 4.8% or less.

公开(公告)号：EP4467688A1

公开(公告)日：2024-11-27

申请号：EP23774970.0

申请日：2023-03-22

Applicant: NHK Spring Co., Ltd.

Inventor： NOZAWA, Takahiro ,  KUROKAWA, Tomoya ,  DOI, Takashi

IPC: C25D17/08

Abstract: A surface treatment jig according to the present invention is a surface treatment jig for performing surface treatment of an exterior body of an accumulator including a bottom, a shell and a port in a state where the surface treatment jig is connected to the exterior body and supports the exterior body includes: a support portion configured to support the accumulator; and a hook portion connected with the support portion. The support portion has a shape tapered near the hook portion.