JPH0449450U

JPH0449450U -

Info

Publication number: JPH0449450U
Application number: JP9104190U
Authority: JP
Priority date: 1990-08-30
Filing date: 1990-08-30
Publication date: 1992-04-27

Description

[Brief explanation of the drawing]

第１図Ａは実施例の筒形アルカリ電池の要部断
面図、第１図Ｂは実施例に用いる封口ガスケツト
を端子板側から見た平面図、第２図は実施例の筒
形アルカリ電池の一部拡大図、第３図は従来例の
説明図である。１……電池缶、２……正極合剤、４……ゲル状
亜鉛負極、５……発電要素、６，９……封口ガス
ケツト、７……端子板、６１，９１……中央ボス
部、６５，９５……薄肉部分。 Figure 1A is a sectional view of the main parts of the cylindrical alkaline battery of the example, Figure 1B is a plan view of the sealing gasket used in the example as seen from the terminal board side, and Figure 2 is the cylindrical alkaline battery of the example. FIG. 3 is an explanatory diagram of a conventional example. DESCRIPTION OF SYMBOLS 1...Battery can, 2...Positive electrode mixture, 4...Gelified zinc negative electrode, 5...Power generation element, 6, 9...Sealing gasket, 7...Terminal plate, 61, 91...Central boss portion, 65, 95...thin part.

Claims

[Scope of Claim for Utility Model Registration] A sealing gasket and a terminal plate are sequentially placed in the opening of a battery can housing a power generation element, and the outer peripheral edge of the sealing gasket is pressed between the open end of the battery can and the peripheral edge of the terminal plate. In a cylindrical alkaline battery in which the opening of the battery can is sealed, the sealing gasket is continuous with a central boss portion into which a current collector connected to the terminal board is inserted, and an outer peripheral side of the central boss portion. and an integrally formed outer peripheral part, the outer peripheral part includes a thin part formed adjacent to the outer peripheral side of the central boss part, and the central boss part and the thin part are connected by an arcuate concave surface. The outer diameter of the central boss portion at the connecting portion with the thin wall portion is made larger on the terminal plate side than on the power generation element side, and the radius of curvature of the concave surface is made larger on the power generation element side than on the terminal plate side. A cylindrical alkaline battery featuring: