Daiwa Can Company

Rio Miyashita

Masahiro Shiotani

Yasushi Enoki

A battery case includes a mounting surface formed into a desired shape to place a sealing plate stably thereon. The battery case includes: an open box-shaped case body holding components of a battery; and a sealing plate that is integrated with the case body to close an opening of the case body. A stepped portion on which the sealing plate is placed is formed on an inner wall surface of the case body. The stepped portion includes: a mounting surface on which the sealing plate is placed; an opposed surface opposed to a periphery of the sealing plate placed on the mounting surface; and a depressed corner depressed outwardly from the opposed surface between the mounting surface and the opposed surface.

Battery case and manufacturing method thereof

A can lid tab includes a flat plate-shaped attachment portion including a rivet hole to be attached to a rivet portion provided in a panel portion of a can lid, the attachment portion being in contact with the panel portion; a tip portion continuous with the attachment portion; and a finger hook portion formed on a side opposite to the tip portion across the attachment portion, at least an upper surface on a rear end side of the finger hook portion being inclined downward from the tip portion side toward the rear end side with respect to the attachment portion.

Growing community of inventors

Sagamihara, Japan

Rio Miyashita