Cap bellows assembly and accumulator
AssigneeNHK Spring Co., Ltd.
InventorsNaohito Nakano, Daijiro Ohta, Takashi Doi, Tomoya Kurokawa
Life of this patent
Estimating the term…
Abstract
A cap bellows assembly seals one end of a bellows provided inside an exterior body of an accumulator, the accumulator including a bottom, a shell, and a port, and includes: a cap body configured to cover an opening of the bellows; and a cap elastic portion provided between the cap body and the port and fixed to the cap body. A bonding surface of the cap body, 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.
Claims7
A cap bellows assembly for sealing 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 comprising:
- a cap body configured to cover 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
- a bonding surface of the cap body, 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.
An accumulator comprising:
- an exterior body including a bottom, a shell, and a port;
- a bellows provided inside the exterior body;
- and
- a cap bellows assembly configured to seal one end of the bellows, wherein
- the cap bellows assembly includes:
- a cap body configured to cover an opening of the bellows;
- and
- a cap elastic portion provided between the cap body and the port and fixed to the cap body, and
- a bonding surface of the cap body, 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.
Dependencies are inferred from the claim text.