JPS6259956U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図はこの考案の一実施例によるアルカリ電池の
主要部分の断面図である。 １０……正極缶、１２……正極、１４……セパ
レータ、１６……負極、１８……集電子、２０…
…封口ガスケツト、２２……負極端子板、２２ａ
……ガス抜孔、２４……外環体、２４ａ，２４ｂ
，２４ｃ……環状壁、２４ｄ……液溜め空間、２
６……内栓体、２６ａ……中心孔、２６ｂ……フ
ランジ部。 The figure is a sectional view of the main parts of an alkaline battery according to an embodiment of this invention. 10... Positive electrode can, 12... Positive electrode, 14... Separator, 16... Negative electrode, 18... Current collector, 20...
...Sealing gasket, 22...Negative terminal plate, 22a
... Gas vent hole, 24 ... Outer ring body, 24a, 24b
, 24c... annular wall, 24d... liquid reservoir space, 2
6... Inner plug body, 26a... Center hole, 26b... Flange portion.

Claims (1)

【実用新案登録請求の範囲】 (1) 発電要素を収納した有底円筒形の正極缶と
、この正極缶の上端開口部の内周に嵌合された合
成樹脂製の封口ガスケツトと、この封口ガスケツ
トの上面側に嵌合されたガス抜孔を有する負極端
子板と、上記封口ガスケツトの中心を貫通して装
着され、上記負極端子板の内面に上端が接合され
た集電子とを備えたアルカリ電池であつて； 上記封口ガスケツトは、上記正極缶の上端開口
部の内周と上記負極端子板の外周縁の間に挾み込
まれる環状壁を含むドーナツ形の外環体と、上記
集電子が緊密に嵌合して貫通する中心孔を有する
円筒形の内栓体との２つの部品で構成されていて
、上記外環体の内周孔内に上記内栓体が緊密に嵌
合装着され、上記正極缶内の異常高圧を受けて上
記外環体と上記内栓体との接合部分の一部が弾性
変形してこの両部品の境界面に排気経路が形成さ
れるように構成された防爆形アルカリ電池。 (2) 上記外環体の内周孔および上記内栓体の外
周形状が上部から下部に向けて拡径したテーパー
状に形成されていることを特徴とする実用新案登
録請求の範囲第１項記載の防爆形アルカリ電池。[Scope of Claim for Utility Model Registration] (1) A bottomed cylindrical positive electrode can housing a power generating element, a synthetic resin sealing gasket fitted to the inner periphery of the upper opening of the positive electrode can, and this sealing gasket. An alkaline battery comprising: a negative electrode terminal plate having a gas vent fitted to the upper surface side of the gasket; and a current collector installed through the center of the sealing gasket and having an upper end joined to the inner surface of the negative electrode terminal plate. The sealing gasket includes a donut-shaped outer ring body including an annular wall inserted between the inner periphery of the upper opening of the positive electrode can and the outer periphery of the negative electrode terminal plate, and the current collector. It is composed of two parts, a cylindrical inner plug body having a central hole that fits tightly and passes through, and the inner plug body is tightly fitted and installed in the inner circumferential hole of the outer ring body. , a part of the joint between the outer ring body and the inner plug body is elastically deformed in response to abnormally high pressure in the positive electrode can, and an exhaust path is formed at the interface between the two parts. Explosion-proof alkaline battery. (2) Utility model registration claim 1, characterized in that the inner peripheral hole of the outer ring body and the outer peripheral shape of the inner plug body are formed in a tapered shape whose diameter increases from the top to the bottom. Explosion-proof alkaline batteries listed.