JP2005011655A

JP2005011655A - Battery case structure

Info

Publication number: JP2005011655A
Application number: JP2003174072A
Authority: JP
Inventors: Toshito Kusakabe; 俊人草壁
Original assignee: Hosiden Corp
Current assignee: Hosiden Corp
Priority date: 2003-06-18
Filing date: 2003-06-18
Publication date: 2005-01-13
Anticipated expiration: 2023-06-18
Also published as: JP4034237B2

Abstract

<P>PROBLEM TO BE SOLVED: To avoid a situation that cylindrical batteries in a battery case are connected in a wrong manner when a battery cover is set in a wrong direction along the periphery or the like. <P>SOLUTION: A battery housing 20 housing cylindrical batteries 10 in parallel and having an opening for loading/unloading of the cylindrical batteries 10 on an end side has a completely housing structure, which does not allow the ends of the plurality of the cylindrical batteries 10 housed in the battery housing 20 to protrude from the opening. A contact terminal 50 is mounted on a battery cover 40 which is attached to the opening side end of the housing 20 and closes the opening. In an insert-contact system, the respective contact terminals 50 are inserted from the opening into the housing 20 with the cover 40 attached to the opening side end of the housing 20, and make contacts with electrodes of the batteries 10 in the housing 20. A positive electrode contact 52 of the contact terminal 50 does not cause interface with the positive electrode of the battery 10 inserted correctly, makes contact with the negative electrode of the battery 10 inserted reversely, and has battery stoppers 44, 45 which prevent the negative electrode from making contact with the positive electrode contact 52. A negative electrode contact 51 has an escape 54, into which the positive electrode of the battery 10 inserted reversely is inserted without contact in a connection. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、電子機器や玩具等の電池収容部分に用いられる電池ケース構造に関する。
【０００２】
【従来の技術】
電子機器やそのリモコン、或いは玩具等における筒形電池の典型的な収容形態として、複数本の筒形電池を並列的に組み合わせて収容するものがあり、その一つとして、特許文献１に示すように、４本の筒形電池を角筒形状に組み合わせるものがある。そして、４本の筒形電池を角筒形状に組み合わせて収容する場合の典型的な構造の一つが、電池収容部の一端側に設けられた開口部から筒形電池を収容部内に縦向きに挿入し、電池収容部の開口側端部に装着される電池ケースにより開口部を閉止する電池ケース構造である。
【０００３】
【特許文献１】
特開平９−９２２４４号公報
【０００４】
【発明が解決しようとする課題】
このような電池ケース構造では、４本の筒形電池は予め決められた向きで電池収容部内に挿入される。電池収容部内に挿入された４本の筒形電池は、収容部の奥に配置された内部接触端子と、電池カバー内に設けられた外部接触端子とにより電気的に接続されて所定の回路を構成する。電池を装着する操作において安全上注意すべきことは次の二つである。
【０００５】
第１は、筒状電池を逆向きに挿入しないことである。逆向きに挿入したことに気づかずに電池カバーを装着すると、挿入された筒形電池が誤って接続される。その結果、電池が早期に消耗する、過電圧により異常な発熱が生じるといった問題を生じることがある。従って、筒形電池が逆向きに挿入された場合は、電池カバーを装着しても内部の筒形電池が電気的に接続されないようにするなどの安全対策が求められる。
【０００６】
第２は、電池カバーを装着するときにカバー内の外部接触端子を収容部内の筒形電池を間違って接触させないことである。電池カバーを装着するときにカバーの周方向の向きを間違えていると、カバー内の外部接触端子が収容部内の筒形電池に誤って接触し、収容部内の筒形電池を短絡させるおそれがある。この観点からは、電池カバーの周方向の向きを間違えたままでは、内部の筒形電池が電気的に接続されないようにするなどの対策が求められる。
【０００７】
本発明はかかる事情に鑑みて創案されたものであり、上述の２つの安全対策を施した電池ケース構造を提供することを目的とする。
【０００８】
【課題を解決するための手段】
上記目的を達成するために、本発明にかかる電池ケース構造は、複数本の筒形電池が並列的に収容され、一端側が筒形電池を出し入れするための開口部とされると共に、収容された複数本の筒形電池の一端部が前記開口部から突出しないように構成された完全収容形式の電池収容部と、該電池収容部の開口側端部に装着されて開口部を閉止する電池カバーと、該電池カバーに取り付けられ、電池カバーを前記電池収容部の開口側端部に装着した状態で開口部から電池収容部内に挿入されて電池収容部内の筒形電池の電極部に接触する挿入接触方式の接触端子とを備えており、且つ、その接触端子の＋極接触部は、正しく挿入された筒形電池の＋極とは干渉せず逆向きに挿入された筒形電池の−極に当接してその−極が＋極接触部に接触するのを阻止する電池ストッパーを接続部周囲に有し、−極接触部は逆向きに挿入された筒形電池の＋極が非接触で挿入される逃げ部を接続部内に有している。
【０００９】
本発明に係る電池ケース構造においては、電池収容部を、収容された複数本の筒形電池の一端部が開口部から突出しない完全収容形式とし、電池カバー内の接触端子を、電池収容部の開口部から電池収容部内に挿入されて電池収容部内の筒形電池の電極部に接触する挿入接触方式としたことにより、電池カバー内の接触端子が電池収容部内の筒形電池の電極部に接触する際に、電池収容部の開口側端部への装着により電池カバーの周方向の向きが決定される。即ち、電池カバーの周方向の向きを間違えたままでは、電池カバーが電池収容部の開口側端部に装着されず、カバー内の外部接触端子は内部の筒形電池に接触しない。
【００１０】
また、電池カバー内の接触端子の＋極接触部周囲に、正しく挿入された筒形電池の＋極とは干渉せず逆向きに挿入された筒形電池の−極に当接してその−極が＋極接触部に接触するのを阻止する電池ストッパーを設け、−極接触部内に、逆向きに挿入された筒形電池の＋極が非接触で通過させる逃げ部を設けたことにより、筒形電池が逆向きに挿入された場合は、電池カバーを装着してもカバー内の接触端子は内部の筒形電池に接触しない。
【００１１】
このように、本発明に係る電池ケース構造においては、電池カバーの周方向の向きを違えている場合も、筒形電池の挿入方向を間違えた場合も、電池カバー内の接触端子が内部の筒形電池に接触しないので、内部の筒形電池が誤って接続される危険がない。
【００１２】
【発明の実施の形態】
以下に本発明の実施形態を図面に基づいて説明する。図１は本発明の一実施形態に係る電池ケース構造を用いた電池ケース部の分解斜視図、図２は同電池ケース部を異なる方向から図示した分解斜視図、図３は同電池ケース部の上ケース及び電池カバーを外した状態を示す斜視図、図４は同電池ケース部に使用されている電池カバーの斜視図、図５（ａ）（ｂ）及び図６（ａ）（ｂ）は同電池カバーに取り付けられた接触端子の機能説明図である。
【００１３】
本実施形態に係る電池ケース構造は、図１及び図２に示すように、複数本（ここでは４本）の筒形電池１０を電源とする電子機器やそのリモコン、或いは玩具等といった対象機器の電池ケース部に用いられている。この電池ケース部は、４本の筒形電池１０を角筒状に組み合わせて収容し、一端側が開口し他端側が閉塞した円筒形状の電池収容部２０と、電池収容部２０の閉塞側端部に設けられた内部側の接続端子３０と、電池収容部２０の開口側端部を閉じるキャップ状の電池カバー４０と、電池カバー４０内に設けられた外部側の接続端子５０とを備えている。
【００１４】
電池収容部２０は、対象機器の上ケース２１と下ケース２２との間に保持された電池ホルダー２３を用いて、上ケース２１と下ケース２２との間に４本の筒形電池１０を上下に左右２本ずつ保持する構成になっている。より具体的には、角筒形状に組み合わされた４本の筒形電池１０のうち、左右２本の筒形電池１０，１０を逆向きに保持し、上下２本の筒形電池１０，１０も逆向きに保持する。
【００１５】
内部側の接続端子３０は、４本の筒形電池１０に対応して４個あり、電池ホルダー２３の閉塞側端部に取り付けられている。これらの接続端子３０は、コイルスプリングで構成されており、対応する筒形電池１０を開放側端部へ付勢する弾性体を兼ねている。
【００１６】
電池収容部２０で重要な構成は、図３に示すように、開口側端部から挿入された筒形電池１０の開口側端部が、電池収容部２０の開口側端部から奥へ所定量（図３にｄで示す）だけ入り込むように、電池収容部２０内の電池ホルダー２３が奥側へ変位した位置に配置されていることである。
【００１７】
キャップ状の電池カバー４０は、開口縁部４１が電池収容部２０の開口側の端縁部に形成されたやや小径の保持部２４に外嵌する構成になっており、その開口縁部４１に複数の爪部４２，４２・を有している。各爪部４２は、図４に示すように、開口縁部４１から内側へ突出しており、電池収容部２０の保持部２４に設けられた凹部２５に嵌合する。更に、この爪部４２は、凹部２５に嵌合した状態から電池カバー４０の周方向へ所定角回転し、これにより凹部２５に続く周溝２６に挿入されて、電池カバー４０を電池収容部２０の開口側端部に固定する。
【００１８】
外部側の接続端子５０は、電池カバー４０内に１組設けられている。いずれの接続端子５０も、上下２段の接触部５１，５２とこれらを繋ぐ接続部５３とを有している。接続部５３は、接触部５１，５２より窪んだ位置にあり、電池カバー４０内に突設された支持部４３上に固定されることにより、接触部５１，５２を定位置に保持している。そして、一方の接続端子５０は、電池カバー４０が電池収容部２０の開口側端部に装着された状態で、電池収容部２０内の左側に上下２段に収容された２本の筒形電池１０，１０の−極１１及び＋極１２に接触部５１，５２がそれぞれ接触することにより、両極を電気的に接続する。同様に、他方の接続端子５０は、電池カバー４０が電池収容部２０の開口側端部に装着された状態で、電池収容部２０内の右側に上下２段に収容された２本の筒形電池１０，１０の＋極１２及び−極１１に上下２段の接触部５２，５１がそれぞれ接触することにより、両極を電気的に接続する。
【００１９】
接続端子５０で重要な第１の構成は、電池カバー４０が電池収容部２０の開口側端部（保持部２４）に装着された状態で、接触端子５０の接触部５１，５２が電池収容部２０内に挿入されて、電池収容部２０内にｄだけ入り込んで収容された上下２本の筒形電池１０，１０の−極１１及び＋極１２に接触部５１，５２が圧接するように、接触部５１，５２が電池カバー４０の開口縁部４１より所定量（図４にＤで示す）だけ突出している点である。具体的には、この突出量Ｄは、電池収容部２０内の筒形電池１０，１０の入り込み量ｄに筒形電池１０，１０の押し込み量を加算し、これから電池カバー４０の開口縁部４１の被さり量（電池収容部２０の開口側の端縁部に形成された保持部２４の挿入量）を差し引いた値に対応しており、被さり量が大きい場合は−になることもある。
【００２０】
接続端子５０で重要な第２の構成は、電池収容部２０内の筒形電池１０，１０の−極１１に接触する接触部５１には、筒形電池１０，１０の＋極１２が非接触で通過する逃げ部５４が円弧状の切り込みにより形成されており、筒形電池１０，１０の＋極１２に接触する接触部５２の周囲には、接触部５２より突出した電池ストッパー４４，４５が設けられている点である。
【００２１】
接触部５１に対応する筒形電池１０が正しい向きで挿入されている場合は、図５（ａ）に示すように、接触部５１はその筒形電池１０の−極１１に接触する。接触部５１に設けられている円弧状の逃げ部５４は、＋極１２の外径より大きい内径を有しており、筒形電池１０が逆向きに挿入されたときには、図５（ｂ）に示すように、接触部５１に対向する＋極１２を内側に通過させることにより、＋極１２が接触部５１に接触する事態を回避する。
【００２２】
一方、接触部５２の周囲に設けられた電池ストッパー４４，４５は電池カバー４０に一体的に形成された絶縁体であり、筒形電池１０の＋極１２の外径より大きく−極１１の外径より小さい間隔で立設されている。接触部５２に対応する筒形電池１０が正しい向きで挿入されている場合は、図６（ａ）に示すように、電池ストッパー４４，４５はその筒形電池１０の＋極１２とは干渉せず、接触部５２をその＋極１２と接触させる。筒形電池１０が逆向きに挿入されたときには、図６（ｂ）に示すように、電池ストッパー４４，４５は接触部５２に対向する−極１１に当接し、−極１１が接触部５２に接触する事態を回避する。
【００２３】
次に、本実施形態に係る電池ケース構造の機能について説明する。
【００２４】
電池収容部２０に４本の筒形電池１０，１０・・を挿入した後、電池収容部２０の開口側端部（保持部２４）に電池カバー４０をはめ込み、周方向に回転させて、その開口側端部に装着する。電池収容部２０の開口側端部に電池カバー４０を装着するとき、筒形電池１０，１０・・は電池収容部２０内にｄだけ入り込んで収容されているため、電池カバー４０内の接触端子５０，５０によって誤った接続をされることがない。
【００２５】
即ち、筒形電池１０，１０・・が電池収容部２０内にｄだけ入り込んで収容されていることに伴い、電池カバー４０内の接触端子５０，５０のそれぞれの接触部５１，５２が電池収容部２０内に挿入されて、電池収容部２０内の対応する筒形電池１０，１０の電極部に接触する。接触端子５０の接触部５１，５２が電池収容部２０内に挿入される過程、即ち電池収容部２０の開口側端部（保持部２４）に電池カバー４０が装着される過程で、爪部４２が電池収容部２０の凹部２５に嵌合することにより、電池カバー４０の周方向の向きが決定される。電池カバー４０の周方向の向きが間違っている場合は、電池カバー４０は電池収容部２０の開口側端部に装着されず、電池カバー４０に取り付けられた接触端子５０，５０の端子部５１，５２は、対応する筒形電池１０，１０の露出側の電極部に接触しない。このため、電池収容部２０に挿入された４本の筒形電池１０，１０・・が間違って接続されるおそれがない。
【００２６】
電池収容部２０に筒形電池１０が間違った方向に挿入された場合、例えば＋極を先にして挿入すべき筒形電池１０が逆向きに挿入された場合、本来なら−極１１が露出側を向くべきところ＋極１２が露出側を向くことになり、電池カバー４０の装着に伴って−極１１用の接触部５１が＋極１２に対向することになる。しかし、−極１１用の接触部５１は、＋極１２を内側に逃がす逃げ部５４を有している。このため、＋極１２は接触部５１に接触しない。代わりに、＋極１２は支持部４３の一部によって逃げ部５４の奥に形成されたストッパーに当接する。
【００２７】
これと反対に、−極を先にして挿入すべき筒形電池１０が逆向きに挿入された場合、本来なら＋極１２が露出側を向くべきところ−極１１が露出側を向くことになり、電池カバー４０の装着に伴って＋極１２用の接触部５２が−極１１に対向することになる。しかし、＋極１２用の接触部５２は、−極１１に当接する電池ストッパー４４，４５を周囲に有している。このため、−極１１に接触部５２は接触しない。
【００２８】
このように、本実施形態に係る電池ケース構造においては、電池カバー４０の周方向の向きを間違えている場合も、筒形電池１０の挿入方向を間違えた場合も、電池カバー４０内の接触端子５０，５０が内部の筒形電池１０に接触しないので、内部の筒形電池１０が誤って接続される危険がない。
【００２９】
なお、上記実施形態では、筒形電池１０の本数は４本としたが、これ以外の本数でもよい。−極１１用の接触部５１に設けられる逃げ部５４は弧状の切り込みにより形成したが、貫通孔等でもよい。
【００３０】
【発明の効果】
以上に説明したとおり、本発明に係る電池ケース構造は、電池収容部を、収容された複数本の筒形電池の一端部が開口部から突出しない完全収容形式とし、電池カバー内の接触端子を、電池収容部の開口部から電池収容部内に挿入されて電池収容部内の筒形電池の電極部に接触する挿入接触方式としたことにより、電池カバーの周方向の向きを間違えた場合に、内部の筒形電池が電気的に接続されないので、安全性に優れる。
【００３１】
また、電池カバー内の接触端子の＋極接触部周囲に、正しく挿入された筒形電池の＋極とは干渉せず逆向きに挿入された筒形電池の−極に当接してその−極が＋極接触部に接触するのを阻止する電池ストッパーを設け、−極接触部内に、逆向きに挿入された筒形電池の＋極が非接触で通過させる逃げ部を設けたことにより、筒形電池の挿入方向を間違えた場合に、内部の筒形電池が電気的に接続されないので、安全性に優れる。
【図面の簡単な説明】
【図１】本発明の一実施形態に係る電池ケース構造を用いた電池ケース部の分解斜視図である。
【図２】同電池ケース部を異なる方向から図示した分解斜視図である。
【図３】同電池ケース部の上ケースおよび電池カバーを外した状態を示す斜視図である。
【図４】同電池ケース部に使用されている電池カバーの斜視図である。
【図５】（ａ）および（ｂ）は同電池カバーに取り付けられた接触端子の機能説明図である。
【図６】（ａ）および（ｂ）は同電池カバーに取り付けられた接触端子の機能説明図である。
【符号の説明】
１０筒形電池
１１ −極
１２＋極
２０電池収容部
２１，２２ケース
２３電池ホルダー
２４保持部
２５凹部
２６周溝
３０内部側の接触端子
４０電池カバー
４１開口縁部
４２爪部
４４，４５電池ストッパー
５０接触端子
５１，５２接触部
５３接続部
５４逃げ部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery case structure used for a battery housing portion of an electronic device, a toy or the like.
[0002]
[Prior art]
As a typical accommodation form of a cylindrical battery in an electronic device, a remote controller thereof, a toy or the like, there is one that accommodates a combination of a plurality of cylindrical batteries in parallel. In addition, there is a combination of four cylindrical batteries in a rectangular tube shape. One of the typical structures in the case of accommodating four cylindrical batteries combined in a rectangular tube shape is to place the cylindrical battery vertically into the accommodating part from an opening provided on one end side of the battery accommodating part. It is a battery case structure which inserts and closes an opening part by the battery case with which the opening side edge part of a battery accommodating part is mounted | worn.
[0003]
[Patent Document 1]
JP-A-9-92244 [0004]
[Problems to be solved by the invention]
In such a battery case structure, the four cylindrical batteries are inserted into the battery housing portion in a predetermined direction. The four cylindrical batteries inserted into the battery housing portion are electrically connected by an internal contact terminal disposed in the back of the housing portion and an external contact terminal provided in the battery cover, so that a predetermined circuit is provided. Constitute. There are two safety points to be aware of in the operation of installing the battery.
[0005]
The first is not to insert the cylindrical battery in the reverse direction. If the battery cover is attached without noticing that the battery is inserted in the opposite direction, the inserted cylindrical battery is erroneously connected. As a result, the battery may be consumed at an early stage, or abnormal heat may be generated due to overvoltage. Therefore, when the cylindrical battery is inserted in the reverse direction, safety measures such as preventing the internal cylindrical battery from being electrically connected even if the battery cover is attached are required.
[0006]
Second, when attaching the battery cover, the external contact terminal in the cover is not accidentally brought into contact with the cylindrical battery in the housing. If the orientation of the cover in the circumferential direction is wrong when the battery cover is attached, the external contact terminal in the cover may accidentally contact the cylindrical battery in the housing part, and the cylindrical battery in the housing part may be short-circuited. . From this point of view, there is a demand for measures such as preventing the internal cylindrical battery from being electrically connected if the circumferential direction of the battery cover is wrong.
[0007]
The present invention has been made in view of such circumstances, and an object thereof is to provide a battery case structure in which the above-described two safety measures are taken.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a battery case structure according to the present invention has a plurality of cylindrical batteries accommodated in parallel, one end side being an opening for taking in and out the cylindrical battery, and accommodating. A battery housing portion of a fully-accommodated type configured such that one end portion of a plurality of cylindrical batteries does not protrude from the opening portion, and a battery cover that is attached to the opening side end portion of the battery housing portion and closes the opening portion And an insertion that is attached to the battery cover and is inserted into the battery housing portion from the opening portion in a state where the battery cover is attached to the opening side end portion of the battery housing portion and contacts the electrode portion of the cylindrical battery in the battery housing portion A contact terminal of a contact type, and the positive electrode contact portion of the contact terminal does not interfere with the positive electrode of the correctly inserted cylindrical battery and does not interfere with the negative electrode of the cylindrical battery. The negative pole comes into contact with the positive pole contact area. The battery stopper which prevents the connecting portion has around, - pole contact portion has a relief portion of the inserted cylindrical battery in the reverse direction + poles are inserted in a non-contact connection portion.
[0009]
In the battery case structure according to the present invention, the battery housing portion is a complete housing type in which one end portion of the accommodated plurality of cylindrical batteries does not protrude from the opening, and the contact terminal in the battery cover is connected to the battery housing portion. The contact terminal in the battery cover is in contact with the electrode part of the cylindrical battery in the battery housing part by adopting an insertion contact system that is inserted into the battery housing part from the opening and contacts the electrode part of the cylindrical battery in the battery housing part. In doing so, the orientation of the battery cover in the circumferential direction is determined by mounting the battery housing portion on the opening side end. That is, if the direction of the battery cover in the circumferential direction is wrong, the battery cover is not attached to the opening side end of the battery housing portion, and the external contact terminal in the cover does not contact the internal cylindrical battery.
[0010]
In addition, around the positive electrode contact portion of the contact terminal in the battery cover, the negative electrode contacts the negative electrode of the cylindrical battery inserted in the opposite direction without interfering with the positive electrode of the correctly inserted cylindrical battery. By providing a battery stopper that prevents the battery from contacting the positive electrode contact part, and providing a relief part in the negative electrode contact part for allowing the positive electrode of the cylindrical battery inserted in the reverse direction to pass through in a non-contact manner. When the battery is inserted in the reverse direction, the contact terminal in the cover does not contact the internal cylindrical battery even if the battery cover is attached.
[0011]
As described above, in the battery case structure according to the present invention, the contact terminal in the battery cover is provided in the inner cylinder regardless of whether the direction of the battery cover in the circumferential direction is wrong or the insertion direction of the cylindrical battery is wrong. Since there is no contact with the battery, there is no danger of the internal cylindrical battery being accidentally connected.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 is an exploded perspective view of a battery case portion using a battery case structure according to an embodiment of the present invention, FIG. 2 is an exploded perspective view illustrating the battery case portion from different directions, and FIG. 3 is an illustration of the battery case portion. FIG. 4 is a perspective view of the battery cover used in the battery case portion, and FIGS. 5A, 5B, 6A, and 6B are views showing the state where the upper case and the battery cover are removed. It is function explanatory drawing of the contact terminal attached to the battery cover.
[0013]
As shown in FIGS. 1 and 2, the battery case structure according to the present embodiment is an electronic device using a plurality (four in this case) of cylindrical batteries 10 as a power source, a remote controller thereof, or a target device such as a toy. Used in battery case. This battery case portion accommodates four cylindrical batteries 10 combined in a square tube shape, a cylindrical battery housing portion 20 that is open at one end and closed at the other end, and a closed end portion of the battery housing portion 20. Are provided with an internal connection terminal 30, a cap-shaped battery cover 40 that closes an opening-side end of the battery housing portion 20, and an external connection terminal 50 provided in the battery cover 40. .
[0014]
The battery housing unit 20 uses the battery holder 23 held between the upper case 21 and the lower case 22 of the target device to move the four cylindrical batteries 10 up and down between the upper case 21 and the lower case 22. It is configured to hold two on each side. More specifically, out of the four cylindrical batteries 10 combined in a rectangular tube shape, the two left and right cylindrical batteries 10 and 10 are held in opposite directions, and the two upper and lower cylindrical batteries 10 and 10 are held. Also hold in the opposite direction.
[0015]
There are four internal connection terminals 30 corresponding to the four cylindrical batteries 10, and they are attached to the closing side end of the battery holder 23. These connection terminals 30 are composed of coil springs, and also serve as elastic bodies that urge the corresponding cylindrical batteries 10 toward the open end.
[0016]
As shown in FIG. 3, the important structure of the battery housing portion 20 is that the opening side end portion of the cylindrical battery 10 inserted from the opening side end portion has a predetermined amount from the opening side end portion of the battery housing portion 20 to the back. That is, the battery holder 23 in the battery housing portion 20 is disposed at a position displaced to the back side so as to enter only (indicated by d in FIG. 3).
[0017]
The cap-shaped battery cover 40 has a configuration in which an opening edge 41 is fitted on a slightly small-diameter holding portion 24 formed on the opening edge of the battery housing portion 20. It has a plurality of claw portions 42, 42. As shown in FIG. 4, each claw portion 42 protrudes inward from the opening edge portion 41, and fits into the recess 25 provided in the holding portion 24 of the battery housing portion 20. Further, the claw portion 42 rotates by a predetermined angle in the circumferential direction of the battery cover 40 from the state in which it is fitted in the recess 25, and is thereby inserted into the circumferential groove 26 following the recess 25, so It is fixed to the opening side end.
[0018]
A set of external connection terminals 50 is provided in the battery cover 40. Each of the connection terminals 50 includes upper and lower two-stage contact portions 51 and 52 and a connection portion 53 that connects them. The connection part 53 is in a position recessed from the contact parts 51 and 52, and is fixed on the support part 43 protruding from the battery cover 40, thereby holding the contact parts 51 and 52 in place. . One connection terminal 50 includes two cylindrical batteries housed in two upper and lower stages on the left side in the battery housing portion 20 in a state where the battery cover 40 is attached to the opening side end portion of the battery housing portion 20. When the contact portions 51 and 52 are in contact with the 10 and 10 negative poles 11 and the positive pole 12, respectively, the two poles are electrically connected. Similarly, the other connection terminal 50 has two cylindrical shapes housed in two upper and lower stages on the right side in the battery housing portion 20 in a state where the battery cover 40 is attached to the opening side end portion of the battery housing portion 20. When the upper and lower contact portions 52 and 51 are in contact with the positive electrode 12 and the negative electrode 11 of the batteries 10 and 10, respectively, the two electrodes are electrically connected.
[0019]
An important first configuration of the connection terminal 50 is that the battery cover 40 is attached to the opening side end (holding portion 24) of the battery housing portion 20, and the contact portions 51 and 52 of the contact terminal 50 are battery housing portions. 20 so that the contact portions 51 and 52 are in pressure contact with the negative electrode 11 and the positive electrode 12 of the two upper and lower cylindrical batteries 10 and 10 which are inserted into the battery accommodating unit 20 and accommodated by d. The contact portions 51 and 52 protrude from the opening edge portion 41 of the battery cover 40 by a predetermined amount (indicated by D in FIG. 4). Specifically, the protrusion amount D is obtained by adding the pushing amount of the cylindrical batteries 10, 10 to the entering amount d of the cylindrical batteries 10, 10 in the battery housing portion 20, and then opening the edge 41 of the battery cover 40. This corresponds to a value obtained by subtracting the amount of covering (the amount of insertion of the holding portion 24 formed at the edge of the battery accommodating portion 20 on the opening side), and may be negative when the amount of covering is large.
[0020]
A second important configuration of the connection terminal 50 is that the positive electrode 12 of the cylindrical batteries 10 and 10 is not in contact with the contact part 51 that contacts the negative electrode 11 of the cylindrical batteries 10 and 10 in the battery housing part 20. Is formed by arc-shaped cuts, and battery stoppers 44 and 45 protruding from the contact portion 52 are provided around the contact portion 52 that contacts the positive electrode 12 of the cylindrical batteries 10 and 10. It is a point provided.
[0021]
When the cylindrical battery 10 corresponding to the contact portion 51 is inserted in the correct orientation, the contact portion 51 contacts the negative electrode 11 of the cylindrical battery 10 as shown in FIG. The arc-shaped relief portion 54 provided in the contact portion 51 has an inner diameter larger than the outer diameter of the positive electrode 12, and when the cylindrical battery 10 is inserted in the reverse direction, it is shown in FIG. As shown, by passing the + pole 12 facing the contact portion 51 inward, a situation where the + pole 12 contacts the contact portion 51 is avoided.
[0022]
On the other hand, the battery stoppers 44 and 45 provided around the contact portion 52 are insulators integrally formed with the battery cover 40, and are larger than the outer diameter of the positive electrode 12 of the cylindrical battery 10 and outside the negative electrode 11. It is erected at intervals smaller than the diameter. When the cylindrical battery 10 corresponding to the contact portion 52 is inserted in the correct orientation, the battery stoppers 44 and 45 do not interfere with the positive electrode 12 of the cylindrical battery 10 as shown in FIG. First, the contact portion 52 is brought into contact with the positive electrode 12. When the cylindrical battery 10 is inserted in the reverse direction, as shown in FIG. 6B, the battery stoppers 44 and 45 are in contact with the negative electrode 11 facing the contact part 52, and the negative electrode 11 is in contact with the contact part 52. Avoid contact situations.
[0023]
Next, functions of the battery case structure according to the present embodiment will be described.
[0024]
After inserting the four cylindrical batteries 10, 10... Into the battery housing part 20, the battery cover 40 is fitted into the opening side end part (holding part 24) of the battery housing part 20 and rotated in the circumferential direction. Attach to the opening side end. When the battery cover 40 is attached to the opening side end of the battery housing part 20, since the cylindrical batteries 10, 10... Are accommodated by entering only d into the battery housing part 20, contact terminals in the battery cover 40 are provided. 50 and 50 do not make a wrong connection.
[0025]
That is, as the cylindrical batteries 10, 10... Enter the battery accommodating portion 20 by entering only d, the contact portions 51, 52 of the contact terminals 50, 50 in the battery cover 40 are accommodated in the battery. It is inserted into the part 20 and comes into contact with the corresponding electrode parts of the cylindrical batteries 10 and 10 in the battery housing part 20. In the process in which the contact parts 51 and 52 of the contact terminal 50 are inserted into the battery housing part 20, that is, in the process in which the battery cover 40 is attached to the opening side end part (holding part 24) of the battery housing part 20. Is fitted into the recess 25 of the battery housing portion 20, whereby the circumferential direction of the battery cover 40 is determined. When the circumferential direction of the battery cover 40 is wrong, the battery cover 40 is not attached to the opening side end of the battery housing portion 20, and the terminal portions 51 of the contact terminals 50, 50 attached to the battery cover 40, 52 does not contact the exposed electrode portions of the corresponding cylindrical batteries 10 and 10. For this reason, there is no possibility that the four cylindrical batteries 10, 10.
[0026]
When the cylindrical battery 10 is inserted in the wrong direction into the battery housing part 20, for example, when the cylindrical battery 10 to be inserted with the positive electrode first is inserted in the reverse direction, the negative electrode 11 is originally exposed. The positive electrode 12 faces the exposed side, and the contact portion 51 for the negative electrode 11 faces the positive electrode 12 as the battery cover 40 is attached. However, the contact portion 51 for the negative pole 11 has an escape portion 54 that allows the positive pole 12 to escape inside. For this reason, the positive electrode 12 does not contact the contact part 51. Instead, the positive electrode 12 abuts against a stopper formed at the back of the escape portion 54 by a part of the support portion 43.
[0027]
On the other hand, if the cylindrical battery 10 to be inserted with the pole first is inserted in the reverse direction, the + pole 12 should face the exposed side, and the pole 11 should face the exposed side. As the battery cover 40 is attached, the contact portion 52 for the positive electrode 12 faces the negative electrode 11. However, the contact portion 52 for the positive electrode 12 has battery stoppers 44 and 45 in contact with the negative electrode 11 at the periphery. For this reason, the contact part 52 does not contact the negative electrode 11.
[0028]
As described above, in the battery case structure according to the present embodiment, the contact terminal in the battery cover 40 can be used regardless of whether the battery cover 40 is inserted in the wrong direction in the circumferential direction or the cylindrical battery 10 is inserted in the wrong direction. Since 50 and 50 do not contact the internal cylindrical battery 10, there is no danger that the internal cylindrical battery 10 is erroneously connected.
[0029]
In the above embodiment, the number of the cylindrical batteries 10 is four, but other numbers may be used. -Although the escape part 54 provided in the contact part 51 for the poles 11 is formed by an arc-shaped cut, it may be a through hole or the like.
[0030]
【The invention's effect】
As described above, in the battery case structure according to the present invention, the battery housing portion is a complete housing type in which one end portion of the accommodated plurality of cylindrical batteries does not protrude from the opening, and the contact terminals in the battery cover are provided. By inserting into the battery housing part through the opening of the battery housing part and making contact with the electrode part of the cylindrical battery in the battery housing part, if the orientation of the battery cover in the circumferential direction is wrong, Since the cylindrical battery is not electrically connected, it is excellent in safety.
[0031]
In addition, around the positive electrode contact portion of the contact terminal in the battery cover, the negative electrode contacts the negative electrode of the cylindrical battery inserted in the opposite direction without interfering with the positive electrode of the correctly inserted cylindrical battery. By providing a battery stopper that prevents the battery from contacting the positive electrode contact part, and providing a relief part in the negative electrode contact part for allowing the positive electrode of the cylindrical battery inserted in the reverse direction to pass through in a non-contact manner. When the battery is inserted in the wrong direction, the internal cylindrical battery is not electrically connected, which is excellent in safety.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a battery case portion using a battery case structure according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view illustrating the battery case portion from different directions.
FIG. 3 is a perspective view showing a state where an upper case and a battery cover of the battery case portion are removed.
FIG. 4 is a perspective view of a battery cover used in the battery case portion.
FIGS. 5A and 5B are functional explanatory diagrams of contact terminals attached to the battery cover. FIGS.
FIGS. 6A and 6B are functional explanatory views of contact terminals attached to the battery cover. FIGS.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cylindrical battery 11 -Pole 12 + Pole 20 Battery accommodating part 21,22 Case 23 Battery holder 24 Holding part 25 Recessed part 26 Circumferential groove 30 Contact terminal 40 inside Battery cover 41 Opening edge part 42 Claw parts 44, 45 Battery stopper 50 Contact terminals 51, 52 Contact part 53 Connection part 54 Relief part

Claims

A plurality of cylindrical batteries are accommodated in parallel, and one end side is an opening for taking in and out the cylindrical battery, and one end of the accommodated plurality of cylindrical batteries does not protrude from the opening. A fully-contained battery housing portion constructed in the above, a battery cover that is attached to the opening side end of the battery housing portion and closes the opening, and is attached to the battery cover, and the battery cover is attached to the battery housing portion. A contact terminal of an insertion contact method that is inserted into the battery housing portion from the opening portion in contact with the electrode portion of the cylindrical battery in the battery housing portion in a state of being attached to the opening side end portion, and of the contact terminal The positive pole contact part does not interfere with the positive pole of the correctly inserted cylindrical battery, but abuts on the negative pole of the cylindrical battery inserted in the opposite direction so that the negative pole contacts the positive pole contact part. There is a battery stopper around the connection part to prevent it, Battery case structure, characterized in that it comprises a relief portion + pole of the inserted cylindrical battery can is inserted in a non-contact connection portion.

2. The battery case structure according to claim 1, wherein the battery housing unit accommodates a plurality of cylindrical batteries in a rectangular tube shape, and the battery cover is fixed to the opening side end of the battery housing unit by rotation.