Nissan Motor Company Limited

Toyo Seikan Kaisha, Ltd.

Toyo Seikan Co., Ltd.

Kazuhiko Tsukada

Ryuichi Amagai

Teruo Segawa

Etsuo Oogami

Kei Oohori

Seijirou Yajima

Takanori Nakagawa

Tatsuya Osafune

Yousuke Ogawa

Provided is a manufacturing method for a rectangular can according to which it is possible to bring an angle formed by a step surface of a step provided in a rectangular can body and an inner wall surface of the rectangular can body closer to 90 degrees. In a step-forming step, using a diethat is provided on an outer wall surface side of a sidewall on which the step is to be formed, a mandrelfor sandwiching the sidewall between the mandreland the dieon the bottom side relative to a portion where the step is to be formed in the inner wall surface on which the step is to be formed, and a punchfor pressing the side opposite to the bottom side relative to the portion where the step is to be formed in the inner wall surface on which the step is to be formed and compressing the sidewall between the punchand the die, the step is formed by performing multiple instances of a pressing operation performed by the punch

Manufacturing method for rectangular can

The present invention provides a container, a lid body and a method of seaming a container, in which the influence of a load at the time of seaming can be made as small as possible, in the container having a seaming flange portion and a seaming curl portion notched. In a container of a structure in which a seaming flange portion formed at an open end portion of a container body, and a seaming curl portion formed on a periphery of a bottom lid are seamed to be joined to each other, and in which a notch is formed in at least one of the seaming curl portion and the seaming flange portion, a short and small curl portion in which a width of protrusion of the seaming curl portion is partially short is formed in at least one of circumferentially opposite sides of the notched portion.

Container, lid body and method of seaming a container

An assembling method for a battery outer case including the steps of: molding a metal container main body with notched holes formed beforehand in its body portion for exposing terminals connected to a flat battery pack; receiving a flat battery pack in the metal container main body while fitting the terminals into the notched holes; covering the metal container main body with a metal lid; and superposing an open end portion of a metal container main body and an end portion of the metal lid with each other thereby to join them to each other by double seaming.

Assembling method for battery outer case for receiving a flat battery pack joined by seam-rolling

A battery outer case can provide space saving by reducing the length of protrusion of joint portions between a metal container main body and a metal lid, is free from a thermal influence, and can make it unnecessary to employ additional or extra parts such as a gasket. The battery outer case includes the metal container main body having at least one surface opened with a flat battery pack composed of flat type batteries received therein, and a metal lid for closing an opening formed in the metal container main body. The inside of the container is in communication with the outside thereof so as to have air permeability, and an open end periphery of the metal container main body and a lid end periphery of the metal lid are joined to each other by seaming.

Battery outer case for receiving a flat battery pack joined by seam-rolling

Growing community of inventors

Yokohama, Japan

Kazuhiko Tsukada