JPS581967Y2 - Kandenchi - Google Patents

Description

【考案の詳細な説明】 本考案は乾電池における耐漏液性の向上を目的とするも
のである。[Detailed Description of the Invention] The purpose of the present invention is to improve the leakage resistance of dry batteries.

従来、亜鉛端の底面に当接した陰極端子板の周縁下面に
亜鉛端の側面に被着した樹脂チューブの下端折曲部と絶
縁リングの両者を該下端折曲部または該絶縁リングが接
するように配置せしめ、陰極端子板の周縁下面と樹脂チ
ューブの下端折曲部または絶縁リングとの接面にポリイ
ソブチレンや酢酸ビニールなどの粘液状のシール剤を充
填して、電解液の耐漏液性を阻止することが試みられた
。Conventionally, both the lower bent part of the resin tube and the insulating ring, which are attached to the side surface of the zinc end, are brought into contact with the lower peripheral edge of the cathode terminal plate that is in contact with the bottom surface of the zinc end. A slimy sealant such as polyisobutylene or vinyl acetate is filled in the contact surface between the bottom surface of the periphery of the cathode terminal plate and the bent portion at the bottom end of the resin tube or the insulating ring to prevent leakage of the electrolyte. Attempts were made to prevent it.

このシール剤の具備する望ましい条件としては、耐電解
液性に優れ、強い撥水性を有し、適当な柔軟性、弾性を
有しシール部分の微細な間隙を十分液密に充塞して、不
乾性を有し長期間加圧下においても老化固化を起こさな
いことおよび温度変化による粘性の変化が少ないことな
どがあるが、従来使用されている上記シール剤において
は撥水性および液密性において若干力ると共に温度変化
による粘性の変化が大きい欠点があり電解液の漏出を確
実に阻止することができなかった。Desirable conditions for this sealant include excellent electrolyte resistance, strong water repellency, appropriate flexibility and elasticity, and the ability to sufficiently liquid-tightly fill the minute gaps in the sealing area. It has drying properties and does not age and solidify even under pressure for a long period of time, and its viscosity does not change much due to temperature changes. In addition, it has the disadvantage that the viscosity changes greatly due to temperature changes, and leakage of the electrolyte solution cannot be reliably prevented.

本考案の実施例を図面とともに説明する。Embodiments of the present invention will be described with reference to the drawings.

第１図ならびに第２図において、電解液を含浸したセパ
レータ１、二酸化マンガンを主体とする陽極合剤２、炭
素棒３を内填した亜鉛端４の開口部を合成樹脂製のガス
ケット５で封口し、亜鉛端４の底面に陰極端子板６を当
接して、亜鉛端４の側面に熱収縮性ポリ塩化ビニルチュ
ーブからなる樹脂チューブ７を被着せしめ、樹脂チュー
ブ７の上端をガスケット５０周縁に沿ってまた下端を陰
極端子板６の周縁８に沿ってそれぞれ内方へ折り曲げる
。In FIGS. 1 and 2, the opening of the zinc end 4 containing a separator 1 impregnated with an electrolytic solution, an anode mixture 2 mainly composed of manganese dioxide, and a carbon rod 3 is sealed with a synthetic resin gasket 5. Then, the cathode terminal plate 6 is brought into contact with the bottom surface of the zinc end 4, a resin tube 7 made of a heat-shrinkable polyvinyl chloride tube is attached to the side surface of the zinc end 4, and the upper end of the resin tube 7 is attached to the periphery of the gasket 50. In addition, the lower end is bent inward along the peripheral edge 8 of the cathode terminal plate 6.

つぎに炭素棒３の頭部に陽極端子板９を嵌着し、陽極端
子板９０周縁ならびに樹脂チューブ７の下端折曲部１０
にそれぞれポリエチレンなどからなる絶縁リング１１を
当接して、外装罐１２で締めつげる。Next, the anode terminal plate 9 is fitted onto the head of the carbon rod 3, and the periphery of the anode terminal plate 90 and the lower end bent portion 10 of the resin tube 7 are
An insulating ring 11 made of polyethylene or the like is brought into contact with each, and the outer can 12 is tightened.

１３は陰極端子板６０周縁８と樹脂チューブ７の下端接
曲部１０との接面に充填されたシール剤である。13 is a sealant filled in the contact surface between the peripheral edge 8 of the cathode terminal plate 60 and the lower end contact portion 10 of the resin tube 7.

第３図は他の実施例を示すもので、樹脂チューブ７の下
端折曲部１０の内側に絶縁リング１１が配置され、陰極
端子板６０周縁８と絶縁リング１１の接面にシール剤１
３が充填されている。FIG. 3 shows another embodiment, in which an insulating ring 11 is arranged inside the bent portion 10 at the lower end of the resin tube 7, and a sealing agent is applied to the contact surface between the peripheral edge 8 of the cathode terminal plate 60 and the insulating ring 11.
3 is filled.

シール剤１３は粒径が約５〜３０μのポリテトラフルオ
ロエチレン、高重合度のポリクロロトリフルオロエチレ
ン、テトラフルオロエチレントへキサフルオロプロピレ
ンの共重合体、クロロトリフルオロエチレンとビニリデ
ンクロライドの共重合体などからなるフッ素樹脂の微粒
子を０．５〜６０重量φ含有した平均分子量が５００〜
１５００程度のグリース状のポリクロロトリフルオロエ
チレン低重合物である。The sealant 13 is made of polytetrafluoroethylene with a particle size of about 5 to 30μ, polychlorotrifluoroethylene with a high degree of polymerization, a copolymer of tetrafluoroethylene hexafluoropropylene, and a copolymer of chlorotrifluoroethylene and vinylidene chloride. The average molecular weight is 500 to 500, containing 0.5 to 60 weight φ of fine particles of fluororesin consisting of coalescence, etc.
It is a grease-like polychlorotrifluoroethylene low polymer with a weight of about 1,500.

フッ素樹脂微粒子の含有率が６０重量俸を超えると、シ
ール剤が固化し易くなって粘着性が低下し、一方微粒子
の含有率が０．５重量係より低いと温度変化による粘性
の変化が大きくなるため好ましくない。When the content of fluororesin fine particles exceeds 60% by weight, the sealant tends to solidify and the adhesiveness decreases, while when the content of fine particles is less than 0.5% by weight, the viscosity changes greatly due to temperature changes. This is not desirable.

本考案は前述したように外装端１２の下端折曲部で樹脂
チューブ７の下端折曲部１０と絶縁リング１１０両者を
押圧してなる乾電池において、亜鉛端４の底面に当接し
た陰極端子板６の周縁８下面に亜鉛端４の側面に被着し
た樹脂チューブ７の下端折曲部１０と絶縁リング１１０
両者を該下端折曲部１０または該絶縁リング１１が接す
るように配置せしめ、陰極端子板６の周縁８下面と樹脂
チューブγの下端折曲部１０または絶縁リング１１との
接面に、グリース状のポリクロロトリフルオロエチレン
低重合物にフッ素樹脂０微粒子を添加したシール剤１３
を充填したもので、こりフシール剤１３は耐電解液性に
優れ、外装端１２で締付けた状態において長期間保存し
ておいても固化することがなく、安定した粘着性と強い
撥水性を有し、温度変化による粘性の変化が小さいので
、保存後ガスの発生した乾電池においても前記接面を液
密に充塞することができ、樹脂チューブ７の内側に出た
電解液が外部へ漏出するのを有効に阻止して、乾電池の
耐漏液性を向上することができる。As described above, the present invention is a dry battery in which both the lower end bent portion 10 of the resin tube 7 and the insulating ring 110 are pressed by the lower end bent portion of the exterior end 12, and the cathode terminal plate is in contact with the bottom surface of the zinc end 4. The lower end bent portion 10 of the resin tube 7 and the insulating ring 110 are attached to the side surface of the zinc end 4 on the lower surface of the peripheral edge 8 of the resin tube 6.
Both are arranged so that the lower end bent portion 10 or the insulating ring 11 are in contact with each other, and a grease is applied to the contact surface between the lower surface of the peripheral edge 8 of the cathode terminal plate 6 and the lower end bent portion 10 of the resin tube γ or the insulating ring 11. Sealing agent 13 made by adding 0 fine particles of fluororesin to polychlorotrifluoroethylene low polymer.
The stiff seal agent 13 has excellent electrolyte resistance, does not harden even if stored for a long period of time with the exterior end 12 tightened, and has stable adhesiveness and strong water repellency. However, since the change in viscosity due to temperature changes is small, the contact surface can be filled liquid-tight even in dry batteries that generate gas after storage, and the electrolyte that has leaked inside the resin tube 7 can be prevented from leaking to the outside. It is possible to effectively prevent this and improve the leakage resistance of the dry battery.

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

第１図は本考案による乾電池の半裁断面図、第２図は第
１図円内の拡大図、第３図は他の実施例における要部拡
大図である。 ４・・・・・・亜鉛端、６・・・・・・陰極端子板、７
・・・・・・樹脂チューブ、８・・・・・・周縁、１０
・・・・・・下端折曲部、１１・・・・・絶縁リング、
１２・・・・・・外装端、１３・・・・・・シール剤。FIG. 1 is a half-cut sectional view of a dry battery according to the present invention, FIG. 2 is an enlarged view of the circle in FIG. 1, and FIG. 3 is an enlarged view of the main part of another embodiment. 4... Zinc end, 6... Cathode terminal plate, 7
...Resin tube, 8...Periphery, 10
...Lower end bent part, 11...Insulation ring,
12...Exterior edge, 13...Sealing agent.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 外装罐１２の下端折曲部で樹脂チューブ７の下端折曲部
１０と絶縁リング１１０両者を押圧してなる乾電池にお
いて、亜鉛端４の底面に当接した陰極端子板６０周縁８
下面に亜鉛端４の側面に被着した樹脂チューブ７の下端
折曲部１０と絶縁リング１１の両者を該下端折曲部１０
または該絶縁リング１１が接するように配置せしめ、陰
極端子板６０周縁８下面と樹脂チューブ７の下端折曲部
１０または絶縁リング１１との接面に、グリース状のポ
リクロロトリフルオロエチレン低重合物にフッ素樹脂の
微粒子を添加したシール剤１３を充填したことを特徴と
する乾電池。In a dry battery in which both the lower end bent portion 10 of the resin tube 7 and the insulating ring 110 are pressed by the lower end bent portion of the exterior can 12, the peripheral edge 8 of the cathode terminal plate 60 is in contact with the bottom surface of the zinc end 4.
Both the lower end bent portion 10 and the insulating ring 11 of the resin tube 7 attached to the side surface of the zinc end 4 on the lower surface are connected to the lower end bent portion 10.
Alternatively, the insulating ring 11 is arranged so that they are in contact with each other, and a grease-like polychlorotrifluoroethylene low polymer is applied to the contact surface between the lower surface of the peripheral edge 8 of the cathode terminal plate 60 and the lower end bent portion 10 of the resin tube 7 or the insulating ring 11. A dry cell characterized in that the battery is filled with a sealant 13 in which fine particles of fluororesin are added.