JP3584667B2

JP3584667B2 - Battery connection terminal mounting structure

Info

Publication number: JP3584667B2
Application number: JP07364397A
Authority: JP
Inventors: 智之立木
Original assignee: サクサ株式会社
Priority date: 1997-03-26
Filing date: 1997-03-26
Publication date: 2004-11-04
Anticipated expiration: 2017-03-26
Also published as: JPH10270008A

Description

【０００１】
【発明の属する技術分野】
本発明は、装置の筺体に固定されたプリント配線板に基端部が取付けられ、自由端部が電池収納部に臨む導電性を有する線材からなる電池接続端子の取付構造に関する。
【０００２】
【従来の技術】
この種の電池接続端子は、本体装置の小型化、薄型化の要求によって導電性を有する線材によって形成され、基端部が下方に直角に折り曲げられ、自由端部側に電池の電極と接触する端子部が形成されている。電池収納部に近接するようにプリント配線板が位置付けられ、プリント配線板に穿設された取付孔に、上述した電池接続端子の折り曲げられた基端部が、係入され半田付けによって固定され、自由端部は電池収納部に臨むようにプリント配線板の端縁から突出している。
【０００３】
【発明が解決しようとする課題】
しかしながら、上述した従来の電池接続端子の取付構造では、プリント配線板の取付孔に針金状の電池接続端子の基端部を係入させる作業が煩雑で時間を要していた。また、電池接続端子の基端部は取付孔内を回動自在となっているので、半田で固定する前に位置を決め、この状態を保持する作業が必要となり、作業が煩雑であるとともに、位置決めにばらつきが生じやすく、電池収納部に収納された電池の電極との間で接触不良が発生するといった問題があった。さらに、プリント配線板の端縁から突出した状態となっている電池接続端子の自由端部が、プリント配線板の搬入、移動中に何かに当接すると、電池接続端子の基端部が取付孔内で回動しやすく、このためプリント配線板の電極との間で接触不良を起こすといった問題もあった。
【０００４】
したがって、本発明は上記した従来の問題に鑑みなされたものであり、その目的とするところは、電池接続端子の組付けが容易で、かつ堅固に取り付けられる電池接続端子の取付構造を提供することにある。
【０００５】
【課題を解決するための手段】
この目的を達成するために、本発明に係る電池接続端子の取付構造は、囲い壁に囲まれ上部が開口した電池収納部と、この電池収納部の囲い壁の上端と略同一平面上に位置付けられたプリント配線板と、自由端部がプリント配線板の端縁から電池収納部に臨むようにプリント配線板に基端部が半田付けされた導電性を有する線材によって形成された電池接続端子とからなる電池接続端子の取付構造において、前記電池接続端子の一端側に端子部を形成し、他端側にはＵ字状の基端部を形成するとともに、この基端部の自由端側を直角に折り曲げた載置部を形成し、プリント配線板に前記Ｕ字状の基端部を支承する長孔を電池接続端子が延在する方向に設け、アッパーケースとロアーケースとからなる電子機器のロアーケースに前記電池収納部が形成され、この電池収納部の囲い壁の上端に電池接続端子を収納する溝を設け、前記アッパーケースと前記ロアーケースの合体により、前記アッパーケースの段部が前記電池収納部の囲い壁上端に当接するものである。
したがって、プリント配線板の長孔に電池接続端子のＵ字状の基端部を係入させる際に、基端部の先端の湾曲された部分が係入するためのガイドとなるので係入作業が容易となる。また、組み付けられた電池接続端子は、長孔にＵ字状の基端部を係入させるので、基端部の周りに回転モーメントが作用しても回動が阻止される。
【０００６】
【発明の実施の形態】
以下、本発明の実施の形態を図に基づいて説明する。図１は本発明に係る電池接続端子を採用した電子機器のアッパーカバーを取り除いた状態の平面図、図２は図１におけるＩＩ−ＩＩ線断面図、図３は同じく要部を示す平面図、図４は図１におけるＩＶ−ＩＶ線断面図、図５は同じく正極側の端子を示し、（ａ）は平面図、（ｂ）は側面図、図６は同じく負極側の端子を示し、（ａ）は平面図、（ｂ）は側面図である。
【０００７】
これらの図において、全体を符号１で示す電子機器には、共に合成樹脂によって形成されたアッパーケース２とロアーケース３とが備えられ、これらアッパーケース２とロアーケース３とは、互いの開口端縁を突き合わせるようにしてねじによって合体されている。４はロアーケース３の開口部のほぼ全面を覆うようにしてロアーケース３に取付られたプリント配線板であって、ロアーケース３に固定される後述する電池収納ケース５に対応する部分４ａが矩形状に切り欠かれている。また、図４に示すように、このプリント配線板４は、その表面が電池収納ケース５の囲い壁の前面板７の上端面より、後述する正、負極側の端子２５，３２の径ｄだけ低くなるように位置付けられている。
【０００８】
５は合成樹脂によって形成された電池収納ケースであって、底板６と底板６の端縁から立設された囲い壁とによって上部が開口した断面コ字状に形成され、囲い壁の前面板７と後面板８とには、それぞれ正、負極側の端子２５，３２と橋絡端子１８とが取付けられている。この電池収納ケース５は、底板６と前面板７に突設したフランジ部９とが、ロアーケース３に立設したボス１０にねじ止めされることにより、ロアーケース３の一方の側面側に固定されている。
【０００９】
図３に示すように、電池収納ケース５の前面板７には、上方が開口した平面視Ｔ字状の端子収納凹部１２，１３が左右対称の位置に一対設けられている。一方の端子収納凹部１２の一端側は、前面板７の上端面より負極側の端子３２の径ｄと同じ深さの載置溝１４が前面板７の側端まで延設されている。他方の端子収納凹部１３の一端は、前面板７の上端面より正極側の端子２５の径ｄと同じ深さの案内溝１５が、前面板７の前端まで延設されている。また、この端子収納凹部１３の他端は、前面板７の上端面より正極側の端子２５の径ｄと同じ深さの載置溝１６が、前面板７の側端側に延設されている。
【００１０】
橋絡端子１８は、ねじりコイルばね状に形成された負極端子部１９とＵ字状に折り曲げ形成された正極端子部２０とが、針金状の導電部材によって一体に形成され、これら負極端子部１９と正極端子部２０とが前面板７側に対向するように、電池収納ケース５の後面板８の溝内に収納されることによって取付けられている。
前記プリント配線板４には、電池収納ケース５の前面板７の一方の側縁に近接して前面板７の長手方向に延在する一対の長孔２２，２３が穿設されている。
【００１１】
図５に示すように、正極側の端子２５は、導電性を有する線材によって平面視クランク状に折り曲げ形成された折曲部２６が設けられており、一端側にＵ字状の端子部２７が下方に湾曲形成され、端子部２７の自由端側は直角に折り曲げられることにより載置部２８が形成されている。また、他端側にＵ字状の基端部２９が下方に湾曲形成され、基端部２９の自由端側は直角に折り曲げられ載置部３０が形成されている。
【００１２】
図６に示すように、負極側の端子３２は、導電性を有する線材によって平面視略クランク状に形成され、一端側にコイル状の端子部３３が後方に突出形成され、他端側にＵ字状の基端部３４が下方に湾曲形成されており、基端部３４の自由端側は直角に折り曲げられ載置部３５が形成されている。
【００１３】
図２および図４に示すように、アッパーケース２の前記電池収納ケース５に対応した位置には、平面視矩形状の開口部３７が設けられている。この開口部３７の前方側には、アッパーケース２の表面よりも低く形成された段部３８が凹設され、この段部３８には上方が開口し、この開口部の一方の端縁に係合部３９ａが突設された凹部３９が形成されている。また、開口部３７の後端側には、載置片４０が突設されている。
【００１４】
４２はアッパーケース２の開口部３７を覆う合成樹脂によって略矩形状に形成された電池蓋であって、前端部にＵ字状のつまみ部４３が下方に湾曲形成され、このつまみ部４３には前記アッパーケース２の凹部３９の係合部３９ａに係合する突起４３ａが形成されている。この電池蓋４２によってアッパーケース２の開口部３７を閉塞するには、電池蓋４２の後端部をアッパーケース２の載置片４０に載置すると共に、電池蓋４２の後端部に形成した係合片（図示せず）を開口部３７の後端縁の下面に係合させる。そして、つまみ部４３を凹部３９内に嵌入させ、つまみ部４３を弾性変形させながら突起４３ａを係合部３９ａに係合させることによって、開口部３７が閉塞される。
【００１５】
次に、このような構成において、正、負極側の端子２５，３２の取付方法を説明する。まず、プリント配線板４の端縁から端子部２７，３３側が突出するように、プリント配線板４の長孔２２，２３内に正、負極側の端子２５，３２の基端部２９，３４を係入させ、半田付けによって正、負極側の端子２５，３２をプリント配線板４に取付ける。このとき、基端部２９，３４がＵ字状に形成され、長孔２２，２３内に係入させるようにしたことにより、単に円形の孔内に端子の折曲げ端部を係入させる従来の組付け方法に比べ係入が容易となる。
【００１６】
また、組み付けられた端子２５，３２は、長孔２２，２３の延在方向に指向するので、従来のように組付け後に指向させるための調整が不要となるだけでなく、指向方向の精度が高い。さらに、端子２５、３２の取付構造が、長孔２２，２３とＵ字状の基端部２９，３４とによるものであるから、従来と比較して取付けが堅固となり、特に端子２５，３２を基端部２９、３４の周りで廻そうとするモーメント力に対して堅固となる。したがって、端子２５，３２を組付けた後、プリント配線板４を搬入したり移送したりするときに、プリント配線板４の端縁から突出した端子部２７，３３に他の部材が当接した際に、端子２５，３２の位置ずれが防止される。
【００１７】
また、基端部２９，３４の自由端部側に載置部３０，３５を設けたことにより、基端部２９、３４を長孔２２、２３を係入させると、これら載置部３０，３５がプリント配線板４上に載置されるので、プリント配線板４上での安定性が良好となる。このため、端子２５，３２がプリント配線板４上で傾いて取付けられるようなことが防止され、プリント配線板４の電極との接触不良が低減されると共に、取付けの精度が向上する。
【００１８】
このように端子２５，３２を取付けたプリント配線板４を、ロアーケース３のボスに取付けてロアーケース３上に装着すると、正極側の端子２５は、図３において前面板７の外側面に添接し、折曲部２６が案内溝１５に係入するとともに載置部２８が載置溝１６に係入し、端子部２７が端子収納凹部１３内に収納される。また、負極側の端子３２は、載置溝１４に係入し、端子部３３が端子収納部１２から電池収納ケース５内に突出する。次に、アッパーケース２をロアーケース３の開口部に被せてねじによって合体すると、図４に示すように、アッパーケース２の段部３８が電池収納ケース５の前面板７の上端に当接する。
【００１９】
したがって、前面板７の案内溝１５、載置溝１６に係入された正極側の端子２５の折曲部２６、載置部２８および載置溝１４に係入された負極側の端子３２は、段部３８によって上方への抜けが規制される。このように正、負極側の端子２５，３２は、電池収納ケース５の前面板７の案内溝１５、載置溝１４，１６内に収納され、アッパーケース２の段部３８によって上方への抜けが規制されるので、位置ずれすることがなく、電池の電極との接触が確実に行われ、接触不良が防止される。また、これら案内溝１５、載置溝１４，１６および段部３８によって保護されるので、変形や破損が防止される。
【００２０】
【発明の効果】
以上説明したように本発明によれば、プリント配線板に基端部が半田付けされた導電性を有する線材によって形成された電池接続端子の自由端部をプリント配線板の端縁から電池収納部に臨むようにし、この電池接続端子の基端部をＵ字状に形成するとともに、プリント配線板にこのＵ字状の基端部を支承する長孔を設けたことにより、Ｕ字状の基端部を長孔内に係入させるようにしたことにより、単に円形の孔内に端子の折曲げ端部を係入させる従来の組付け方法に比べ係入が容易となる。
また、組み付けられた電池接続端子は、長孔の延在方向に指向するので、従来のように組付け後に指向させる調整が不要となるだけでなく、指向方向の精度が高い。さらに、電池接続端子の取付構造が、長孔とＵ字状の基端部とによるものであるから、従来と比較して取付けが堅固となり、特に電池接続端子を基端部の周りで廻そうとするモーメント力に対して堅固となる。したがって、電池接続端子を組付けた後、プリント配線板を搬入したり移送したりするときに、プリント配線板の端縁から突出した電池接続端子の自由端部端子部に他の部材が当接した際に、電池接続端子の位置ずれが防止される。
また、基端部の自由端部側に載置部を設けたことにより、基端部を長孔に係入させると、これら載置部がプリント配線板上に載置されるので、プリント配線板上での安定性が良好となる。このため、電池接続端子がプリント配線板上で傾いて取付けられるようなことが防止され、プリント配線板の電極との接触不良が低減されると共に、取付けの精度が向上する。また、電池収納部の囲い壁の上端に電池接続端子を収納する溝を設けたことにより、この溝によって電池接続端子の位置ずれが防止され、このため電池の電極との接触が確実に行われ、接触不良が防止される。また、これら溝によって電池接続端子が保護されるので、変形や破損が防止される。また、アッパーケースの段部によって電池接続端子の上方への抜けが規制されるので、位置ずれすることがなく、電池の電極との接触が確実に行われ、接触不良が防止される。
【図面の簡単な説明】
【図１】本発明に係る電池接続端子の取付構造を採用した電子機器のアッパーカバーを取り除いた状態の平面図である。
【図２】図１におけるII-II 線断面図である。
【図３】本発明に係る電池接続端子の取付構造の要部を示す平面図である。
【図４】図１におけるIV-IV 線断面図である。
【図５】本発明に係る電池接続端子の取付構造における正極側の端子を示し、（ａ）は平面図、（ｂ）は側面図である。
【図６】本発明に係る電池接続端子の取付構造における負極側の端子を示し、（ａ）は平面図、（ｂ）は側面図である。
【符号の説明】
１…電子機器、２…アッパーケース、３…ロアーケース、４…プリント配線板、５…電池収納ケース、７…前面板、１２，１３…端子収納凹部、１４，１６…載置溝、１５…案内溝、１８…橋絡端子、２２，２３…長孔、２５…正極側の端子、２７，３３…端子部、２９，３４…Ｕ字状の基端部、３２…負極側の端子、３８…段部、４２…電池蓋。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mounting structure of a battery connection terminal made of a conductive wire whose base end is attached to a printed wiring board fixed to a housing of an apparatus and whose free end faces a battery housing.
[0002]
[Prior art]
This type of battery connection terminal is formed of a conductive wire material in response to a demand for miniaturization and thinning of the main body device, a base end portion is bent downward at a right angle, and a free end portion contacts a battery electrode. A terminal portion is formed. The printed wiring board is positioned so as to be close to the battery accommodating portion, and the bent base end of the battery connection terminal described above is fixed to the mounting hole formed in the printed wiring board by engaging and soldering, The free end protrudes from the edge of the printed wiring board so as to face the battery housing.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional battery connection terminal mounting structure, the operation of engaging the base end of the wire-shaped battery connection terminal into the mounting hole of the printed wiring board is complicated and time-consuming. Also, since the base end of the battery connection terminal is rotatable in the mounting hole, it is necessary to determine the position before fixing with solder and maintain this state, and the work is complicated, There has been a problem in that the positioning tends to vary, and poor contact occurs with the electrodes of the battery stored in the battery storage section. Furthermore, if the free end of the battery connection terminal, which protrudes from the edge of the printed wiring board, comes into contact with something while carrying or moving the printed wiring board, the base end of the battery connection terminal is attached. There is also a problem that it is easy to rotate in the hole, which causes poor contact with the electrode of the printed wiring board.
[0004]
Therefore, the present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a mounting structure of a battery connection terminal in which a battery connection terminal can be easily and firmly mounted. It is in.
[0005]
[Means for Solving the Problems]
In order to achieve this object, a mounting structure for a battery connection terminal according to the present invention is characterized in that a battery storage section surrounded by an enclosure wall and having an open top is positioned substantially flush with an upper end of the enclosure wall of the battery storage section. A printed wiring board, and a battery connection terminal formed by a conductive wire whose base end is soldered to the printed wiring board so that the free end faces the battery housing from the edge of the printed wiring board. In the mounting structure for a battery connection terminal, a terminal portion is formed at one end of the battery connection terminal, a U-shaped base end is formed at the other end, and a free end of the base end is formed. An electronic device comprising an upper case and a lower case , wherein a mounting portion bent at a right angle is formed, and a long hole for supporting the U-shaped base end portion is provided in a printed wiring board in a direction in which a battery connection terminal extends. The battery compartment in the lower case A groove for accommodating a battery connection terminal is provided at the upper end of the enclosure wall of the battery storage section, and the step of the upper case is formed at the upper end of the enclosure wall of the battery storage section by the combination of the upper case and the lower case. Is the one that abuts .
Therefore, when the U-shaped base end of the battery connection terminal is engaged with the long hole of the printed wiring board, the curved portion at the distal end of the base end serves as a guide for engagement. Becomes easier. In addition, since the assembled battery connection terminal has the U-shaped base end engaged in the elongated hole, rotation is prevented even if a rotational moment acts around the base end.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view of an electronic device employing a battery connection terminal according to the present invention in a state where an upper cover is removed, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 1, FIG. 5 shows a terminal on the positive electrode side, (a) is a plan view, (b) is a side view, and FIG. 6 shows a terminal on the negative electrode side, (a) is a plan view and (b) is a side view.
[0007]
In these figures, an electronic device generally denoted by reference numeral 1 is provided with an upper case 2 and a lower case 3 both formed of synthetic resin, and these upper case 2 and lower case 3 are open ends of each other. They are joined by screws with their edges abutting. Reference numeral 4 denotes a printed wiring board attached to the lower case 3 so as to cover almost the entire opening of the lower case 3, and a portion 4a corresponding to a later-described battery storage case 5 fixed to the lower case 3 has a rectangular shape. Notched in shape. As shown in FIG. 4, the printed wiring board 4 has a surface from the upper end surface of the front plate 7 of the surrounding wall of the battery storage case 5 by a diameter d of the positive and negative terminals 25 and 32 described later. It is positioned to be low.
[0008]
Reference numeral 5 denotes a battery storage case formed of a synthetic resin, which is formed by a bottom plate 6 and a surrounding wall standing upright from an edge of the bottom plate 6 so as to have a U-shaped cross section with an open top, and a front plate 7 of the surrounding wall. The positive and negative terminals 25 and 32 and the bridging terminal 18 are attached to the rear plate 8 and the rear plate 8, respectively. The battery storage case 5 is fixed to one side surface of the lower case 3 by screwing a bottom portion 6 and a flange portion 9 protruding from the front plate 7 to a boss 10 erected on the lower case 3. Have been.
[0009]
As shown in FIG. 3, the front plate 7 of the battery storage case 5 is provided with a pair of T-shaped terminal storage recesses 12 and 13 that are open at the top and that are symmetrical in plan view. On one end side of the one terminal housing recess 12, a mounting groove 14 having the same depth as the diameter d of the terminal 32 on the negative electrode side extends from the upper end surface of the front plate 7 to the side end of the front plate 7. At one end of the other terminal storage recess 13, a guide groove 15 having the same depth as the diameter d of the terminal 25 on the positive electrode side extends from the upper end surface of the front plate 7 to the front end of the front plate 7. At the other end of the terminal storage recess 13, a mounting groove 16 having the same depth as the diameter d of the terminal 25 on the positive electrode side from the upper end surface of the front plate 7 is extended to the side end of the front plate 7. I have.
[0010]
In the bridging terminal 18, a negative terminal 19 formed in a torsion coil spring shape and a positive terminal 20 bent and formed in a U-shape are integrally formed by a wire-shaped conductive member. The battery case 5 is mounted by being housed in a groove of the rear plate 8 so that the battery case 5 and the positive electrode terminal portion 20 face the front plate 7 side.
The printed wiring board 4 is provided with a pair of long holes 22 and 23 that extend in the longitudinal direction of the front plate 7 near one side edge of the front plate 7 of the battery storage case 5.
[0011]
As shown in FIG. 5, the terminal 25 on the positive electrode side is provided with a bent portion 26 formed by bending a conductive wire into a crank shape in a plan view, and a U-shaped terminal portion 27 is provided at one end. The mounting portion 28 is formed by being bent downward and the free end side of the terminal portion 27 being bent at a right angle. A U-shaped base end portion 29 is curved downward at the other end side, and a free end side of the base end portion 29 is bent at a right angle to form a mounting portion 30.
[0012]
As shown in FIG. 6, the terminal 32 on the negative electrode side is formed of a conductive wire material into a substantially crank shape in plan view, a coil-shaped terminal portion 33 is formed on one end side to project rearward, and a U-shaped terminal on the other end side. The base end 34 having a U-shape is curved downward, and the free end side of the base end 34 is bent at a right angle to form a mounting portion 35.
[0013]
As shown in FIGS. 2 and 4, a rectangular opening 37 in a plan view is provided at a position of the upper case 2 corresponding to the battery storage case 5. At the front side of the opening 37, a stepped portion 38 formed to be lower than the surface of the upper case 2 is recessed, and the upper side of the stepped portion 38 is opened, and is connected to one edge of the opening. A concave portion 39 formed with a joint portion 39a is formed. A mounting piece 40 protrudes from the rear end side of the opening 37.
[0014]
Reference numeral 42 denotes a substantially rectangular battery cover made of a synthetic resin that covers the opening 37 of the upper case 2. A U-shaped knob 43 is curved downward at the front end. A projection 43a that engages with the engagement portion 39a of the recess 39 of the upper case 2 is formed. In order to close the opening 37 of the upper case 2 with the battery lid 42, the rear end of the battery lid 42 is placed on the mounting piece 40 of the upper case 2 and formed at the rear end of the battery lid 42. An engaging piece (not shown) is engaged with the lower surface of the rear edge of the opening 37. The opening 37 is closed by fitting the knob 43 into the recess 39 and engaging the projection 43 a with the engagement portion 39 a while elastically deforming the knob 43.
[0015]
Next, in such a configuration, a method of attaching the terminals 25 and 32 on the positive and negative electrode sides will be described. First, the base ends 29 and 34 of the positive and negative terminals 25 and 32 are inserted into the slots 22 and 23 of the printed wiring board 4 so that the terminal portions 27 and 33 protrude from the edge of the printed wiring board 4. The positive and negative terminals 25 and 32 are attached to the printed wiring board 4 by soldering. At this time, the base ends 29 and 34 are formed in a U-shape and engaged in the long holes 22 and 23, so that the bent end of the terminal is simply engaged in the circular hole. Engagement is easier than in the method of assembling.
[0016]
Further, since the assembled terminals 25 and 32 are oriented in the extending direction of the elongated holes 22 and 23, not only is it unnecessary to adjust the orientation after assembly as in the related art, but also the accuracy of the orientation direction is reduced. high. Furthermore, since the mounting structure of the terminals 25 and 32 is formed by the elongated holes 22 and 23 and the U-shaped base ends 29 and 34, the mounting is more solid than in the conventional case. It is robust against moment forces about to rotate around the proximal ends 29,34. Therefore, after assembling the terminals 25 and 32, when the printed wiring board 4 is carried in or transferred, another member abuts on the terminal portions 27 and 33 protruding from the edge of the printed wiring board 4. At this time, displacement of the terminals 25 and 32 is prevented.
[0017]
In addition, since the mounting portions 30 and 35 are provided on the free end side of the base end portions 29 and 34, when the base ends 29 and 34 are engaged with the elongated holes 22 and 23, the mounting portions 30 and Since 35 is mounted on the printed wiring board 4, the stability on the printed wiring board 4 is improved. For this reason, the terminals 25 and 32 are prevented from being mounted on the printed wiring board 4 at an angle, so that poor contact with the electrodes of the printed wiring board 4 is reduced, and the mounting accuracy is improved.
[0018]
When the printed wiring board 4 to which the terminals 25 and 32 are mounted is mounted on the boss of the lower case 3 and mounted on the lower case 3, the positive terminal 25 is attached to the outer surface of the front plate 7 in FIG. Then, the bent portion 26 engages with the guide groove 15, the mounting portion 28 engages with the mounting groove 16, and the terminal portion 27 is housed in the terminal housing recess 13. Further, the terminal 32 on the negative electrode side engages with the mounting groove 14, and the terminal portion 33 projects from the terminal storage portion 12 into the battery storage case 5. Next, when the upper case 2 is put on the opening of the lower case 3 and united by screws, the step 38 of the upper case 2 comes into contact with the upper end of the front plate 7 of the battery storage case 5 as shown in FIG.
[0019]
Therefore, the bent portion 26 of the positive electrode terminal 25 engaged in the guide groove 15 and the mounting groove 16 of the front plate 7, the mounting portion 28, and the negative electrode terminal 32 engaged in the mounting groove 14 The stepped portion 38 restricts upward removal. As described above, the positive and negative terminals 25 and 32 are housed in the guide grooves 15 and the mounting grooves 14 and 16 of the front plate 7 of the battery housing case 5, and the terminals 25 and 32 are pulled out upward by the steps 38 of the upper case 2. Is regulated, the position does not shift, the contact with the battery electrode is reliably performed, and the contact failure is prevented. In addition, since the guide groove 15, the mounting grooves 14, 16 and the step portion 38 are protected, deformation and breakage are prevented.
[0020]
【The invention's effect】
As described above, according to the present invention, the free end of the battery connection terminal formed of a conductive wire whose base end is soldered to the printed wiring board is moved from the edge of the printed wiring board to the battery housing section. The base end of the battery connection terminal is formed in a U-shape, and the printed wiring board is provided with a long hole for supporting the base end of the U-shape. By engaging the end portion in the elongated hole, the engagement becomes easier as compared with the conventional assembling method in which the bent end portion of the terminal is simply engaged in the circular hole.
In addition, since the assembled battery connection terminal is oriented in the extending direction of the elongated hole, not only the adjustment for directing after the assembly as in the related art is unnecessary, but also the accuracy of the orientation direction is high. Furthermore, since the mounting structure of the battery connection terminal is based on the elongated hole and the U-shaped base end, the mounting is more solid than in the past, and especially, the battery connection terminal will be rotated around the base end. To the moment force. Therefore, when the printed wiring board is carried in or transferred after the battery connection terminal is assembled, another member abuts on the free end terminal portion of the battery connection terminal protruding from the edge of the printed wiring board. In this case, the displacement of the battery connection terminal is prevented.
In addition, since the mounting portion is provided on the free end side of the base end portion, when the base end portion is engaged with the elongated hole, these mounting portions are mounted on the printed wiring board, so that the printed wiring is provided. Good stability on the board. For this reason, it is prevented that the battery connection terminal is inclinedly mounted on the printed wiring board, and the contact failure with the electrode of the printed wiring board is reduced, and the mounting accuracy is improved. In addition, by providing a groove for housing the battery connection terminal at the upper end of the enclosure wall of the battery housing, the groove prevents the position of the battery connection terminal from being displaced, and thus ensures contact with the battery electrode. Defective contact is prevented. In addition, since the battery connection terminals are protected by these grooves, deformation and breakage are prevented. In addition, since the step of the upper case restricts the battery connection terminal from coming off upward, the battery connection terminal is not displaced, the contact with the battery electrode is reliably performed, and the contact failure is prevented.
[Brief description of the drawings]
FIG. 1 is a plan view of an electronic device employing a battery connection terminal mounting structure according to the present invention with an upper cover removed.
FIG. 2 is a sectional view taken along line II-II in FIG.
FIG. 3 is a plan view showing a main part of a mounting structure for a battery connection terminal according to the present invention.
FIG. 4 is a sectional view taken along line IV-IV in FIG.
5A and 5B show a terminal on the positive electrode side in the mounting structure of the battery connection terminal according to the present invention, wherein FIG. 5A is a plan view and FIG. 5B is a side view.
FIGS. 6A and 6B show a terminal on the negative electrode side in the battery connection terminal mounting structure according to the present invention, wherein FIG. 6A is a plan view and FIG. 6B is a side view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Electronic device, 2 ... Upper case, 3 ... Lower case, 4 ... Printed wiring board, 5 ... Battery storage case, 7 ... Front plate, 12, 13 ... Terminal storage recess, 14, 16 ... Mounting groove, 15 ... Guide groove, 18 bridging terminal, 22, 23 ... long hole, 25 ... positive terminal, 27, 33 ... terminal, 29, 34 ... U-shaped base end, 32 ... negative terminal, 38 ... step, 42 ... battery lid.

Claims

A battery storage section surrounded by an enclosure wall and having an open top, a printed wiring board positioned substantially on the same plane as the upper end of the enclosure wall of the battery storage section, and a free end configured to receive the battery from an edge of the printed wiring board. And a battery connecting terminal formed of a conductive wire material having a base end soldered to the printed wiring board so as to face the portion, wherein a terminal portion is provided at one end of the battery connecting terminal. A U-shaped base end is formed on the other end, and a mounting portion is formed by bending the free end of the base end at a right angle, and the U-shaped base is formed on a printed wiring board. An elongated hole for supporting the base end is provided in a direction in which the battery connection terminal extends , and the battery housing is formed in a lower case of an electronic device including an upper case and a lower case. Storing the battery connection terminal at the top The provided by polymers of the upper case the lower case, the mounting structure of the battery connection terminal stepped portion of the upper case is characterized in that it abuts against the surrounding wall upper end of the battery compartment.