JPH0310605Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は端子部を耐酸性充填接着剤で封口する
構造の密閉式鉛電池の改良に関するもので、その
目的とするところは、Ｌ型端子にリブを設け、耐
酸性接着剤とＬ型端子の接触表面積を多くし電解
液のリークパスを長くすることで、液漏れを防
ぎ、長期安定寿命を有する密閉式鉛電池を提供す
るところにある。[Detailed description of the invention] This invention relates to the improvement of a sealed lead-acid battery with a structure in which the terminal portion is sealed with an acid-resistant filling adhesive. By increasing the contact surface area between the adhesive and the L-shaped terminal and lengthening the electrolyte leakage path, the purpose is to prevent liquid leakage and provide a sealed lead-acid battery that has a long and stable life.

鉛電池において、端子は単にポールからの電流
の取出しと、他の電気機器あるいは鉛電池への接
続中間物としての役割を担うものであるが、密閉
式鉛電池においては、上記役割と同時に、電解液
の液漏れがあつてはならずこれを防ぐとも重要で
ある。 In a lead-acid battery, the terminal simply takes out the current from the pole and acts as an intermediate connection to other electrical equipment or the lead-acid battery, but in a sealed lead-acid battery, it also serves the role of electrolysis. It is also important to prevent liquid leakage.

本考案は上記の点に鑑みなされたもので、液漏
れを防ぐＬ型端子構造を有する密閉式鉛電池を提
供せんとするものである。以下。図面を用いて本
考案を具体的に説明する。 The present invention has been developed in view of the above points, and aims to provide a sealed lead-acid battery having an L-shaped terminal structure that prevents liquid leakage. below. The present invention will be specifically explained using the drawings.

第１図は従来のＬ型端子を用いた時の端子部の
断面を示すもので、１はＬ型端子、２はエポキシ
樹脂のごとき耐酸性樹脂からなる充填接着剤、３
は電槽蓋、４は電槽蓋３に埋め込まれたブツシン
グ、５はポールである。かかる従来例において
は、電槽蓋３の凹部に埋め込まれたブツシング４
にポール５を挿入し、Ｌ型端子１の一方をブツシ
ング４、ポール５に溶接し、Ｌ型端子１の他方の
みが電槽蓋３の上方に露出するように、電槽蓋３
の凹部に充填接着剤２を充填して、端子部は形成
されている。この形状においては、ブツシング４
と電槽蓋３の間には成形時に両者の収縮率の差か
らくる微少な間隙ができ、電解液は図中のａ点ま
では直ちに達する。したがつて、電解液の外部へ
の漏れを防ぐパスはＬ型端子１と充填接着剤２の
接触面となり、液漏れのパスは図中のａ点とｂ点
を結ぶ矢印線上が最も短いものになる。従来法に
よるＬ型端子１を用いた場合、この部分が平面で
あるので、電解液の液漏れを防ぎ得るパスとして
は不十分であつた。 Figure 1 shows the cross section of the terminal section when a conventional L-shaped terminal is used, in which 1 is the L-shaped terminal, 2 is a filling adhesive made of acid-resistant resin such as epoxy resin, and 3
4 is a battery case lid, 4 is a bushing embedded in the battery case lid 3, and 5 is a pole. In such a conventional example, the bushing 4 embedded in the recess of the battery case lid 3
Insert the pole 5 into the battery case lid 3, weld one side of the L-shaped terminal 1 to the bushing 4 and the pole 5, and attach the battery case lid 3 so that only the other side of the L-type terminal 1 is exposed above the battery case lid 3.
The terminal portion is formed by filling the recessed portion with filling adhesive 2. In this shape, the bushing 4
A minute gap is created between the cap 3 and the cap 3 due to the difference in shrinkage rates between the two during molding, and the electrolyte immediately reaches point a in the figure. Therefore, the path to prevent leakage of the electrolyte to the outside is the contact surface between the L-shaped terminal 1 and the filling adhesive 2, and the path for liquid leakage is the shortest one on the arrow line connecting points a and b in the figure. become. When the L-shaped terminal 1 according to the conventional method is used, since this portion is a flat surface, it is insufficient as a path for preventing electrolyte leakage.

第２図は本考案密閉式鉛電池における端子部の
一実施例を示す断面図、第３図および第４図は本
考案実施例に用いたＬ型端子の形状を示す平面図
および側面図である。図中、第１図と同符号のも
のは同一部材を示す。６はＬ型端子１の充填接着
剤２に埋設された部分の一部に設けたリブであ
り、本実施例ではＬ型端子１の充填接着剤２と接
触する側面図および上面部に縦方向に設けられて
いる。該リブ６はＬ型端子の下面部に設けてもよ
く、要するに図中のａ点とｂ点を結ぶ矢印線で示
す電解液の外部への漏れのパスを長くするもので
あるから、少なくともこの矢印線と交差するよう
にリブを設ける必要がある。本考案実施例は、従
来のＬ型端子の充填接着剤の充填部に相当する側
面部、上面部あるいは下面部にリブ６を設けた第
３図および第４図に示すごとき形状のＬ型端子１
を用いたものである。 Figure 2 is a sectional view showing an embodiment of the terminal section of the sealed lead-acid battery of the present invention, and Figures 3 and 4 are a plan view and a side view showing the shape of the L-shaped terminal used in the embodiment of the present invention. be. In the figure, the same reference numerals as in FIG. 1 indicate the same members. Reference numeral 6 denotes a rib provided in a part of the part of the L-shaped terminal 1 buried in the filling adhesive 2. In this embodiment, a rib 6 is provided in the side view and the top surface of the L-shaped terminal 1 in contact with the filling adhesive 2. It is set in. The rib 6 may be provided on the lower surface of the L-shaped terminal, and in short, it lengthens the path for leakage of the electrolyte to the outside, which is indicated by the arrow line connecting points a and b in the figure. It is necessary to provide a rib so that it intersects with the arrow line. The embodiment of the present invention has an L-shaped terminal as shown in FIGS. 3 and 4, in which ribs 6 are provided on the side, top, or bottom portions corresponding to the filled portions of the filling adhesive of conventional L-shaped terminals. 1
It uses

ところで本考案実施例においても前述した理由
により、図中のａ点まで直ちに電解液が達するの
で、電解液の外部への漏れを防ぐパスはＬ型端子
１と耐酸性充填接着剤の接触面となり、その最短
リークパスは図中のａ点からｂ点を結ぶ矢印線状
となる。しかしながら、従来のＬ型端子と異な
り、リブ６が設けてあるため、電解液の最短リー
クパスの間に凹凸が存在し、その結果、電解液の
最短リークパスは従来のものに比べて1.5倍以上
となり、電解液の液漏れを防ぐのに十分な効果を
発揮する。 By the way, in the embodiment of the present invention as well, for the reason mentioned above, the electrolyte reaches point a in the figure immediately, so the path to prevent leakage of the electrolyte to the outside is the contact surface between the L-shaped terminal 1 and the acid-resistant filling adhesive. , the shortest leak path is in the shape of an arrow connecting point a to b in the figure. However, unlike conventional L-type terminals, since ribs 6 are provided, unevenness exists between the shortest leak path of the electrolyte, and as a result, the shortest leak path of the electrolyte is more than 1.5 times that of the conventional terminal. , which is sufficiently effective in preventing electrolyte leakage.

なお、端子の側面部に設けるリブとしては、第
２図の実施例のように縦方向に限定されるもので
はなく、横方向でもよく、要するに電解液の漏れ
を防ぐパスが長くなるように設けてあればよい。
また第２図の実施例のように側面部のリブを縦方
向に設けると、Ｌ型端子製作に要する金型の構
造、製作が簡単となる。 Note that the ribs provided on the side surface of the terminal are not limited to the vertical direction as in the embodiment shown in Fig. 2, but may be provided in the horizontal direction. It is good if it is.
Furthermore, if the ribs on the side surfaces are provided in the vertical direction as in the embodiment shown in FIG. 2, the structure and manufacture of the mold required for manufacturing the L-shaped terminal will be simplified.

以上述べたように本考案によれば、電解液の液
漏れが生じるおそれはなく、密閉式鉛電池を長寿
命化する上で、非常に効果を発揮することができ
る。 As described above, according to the present invention, there is no risk of electrolyte leakage, and it can be very effective in extending the life of a sealed lead-acid battery.

【実用新案登録請求の範囲】 電槽蓋３の凹部に埋め込まれたブツシング４に
ポール５が挿入され、Ｌ型端子１の一方がブツシ
ング４およびポール５に溶接され、Ｌ型端子１の
他方のみが電槽蓋３の上方に露出するごとく電槽
蓋３の凹部に充填接着剤２が充填されて端子部が
構成されてなる密閉式鉛電池において、Ｌ型端子
１の充填接着剤２に埋設された部分であつて、電
池内部からＬ型端子１の露出部への電解液のリー
クパスとなる部分に、このリークパスと交差する
リブ６を設けたことを特徴とする密閉式鉛電池。[Claims for Utility Model Registration] A pole 5 is inserted into the bushing 4 embedded in the recess of the battery case lid 3, one side of the L-shaped terminal 1 is welded to the bushing 4 and the pole 5, and only the other side of the L-shaped terminal 1 is welded to the bushing 4 and the pole 5. In a sealed lead-acid battery in which the terminal part is formed by filling the recess of the battery case cover 3 with the filler adhesive 2 so that it is exposed above the battery case cover 3, the L-shaped terminal 1 is embedded in the filler adhesive 2. A sealed lead-acid battery characterized in that a rib 6 that intersects with the leak path is provided in the portion where the electrolyte leaks from the inside of the battery to the exposed portion of the L-shaped terminal 1.

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

第１図は従来のこの種密閉式鉛電池の端子部の
一例を示す断面図、第２図は本考案密閉式鉛電池
における端子部の一実施例を示す断面図、第３図
および第４図は第２図に示した本考案実施例にお
けるＬ型端子の形状を示す平面図および側面図で
ある。 １…Ｌ型端子、２…充填接着剤、３…電槽蓋、
４…ブツシング、５…ポール、６…リブ。 FIG. 1 is a cross-sectional view showing an example of the terminal portion of a conventional sealed lead-acid battery of this type, FIG. 2 is a cross-sectional view showing an example of the terminal portion of the sealed lead-acid battery of the present invention, and FIGS. The figures are a plan view and a side view showing the shape of the L-shaped terminal in the embodiment of the present invention shown in FIG. 2. 1... L-type terminal, 2... Filling adhesive, 3... Battery container lid,
4... Butsing, 5... Paul, 6... Rib.