JP2004054661A

JP2004054661A - Portable device

Info

Publication number: JP2004054661A
Application number: JP2002212054A
Authority: JP
Inventors: Seiji Ioka; 井岡　誠二; Hiroichi Ishida; 石田　博一
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2002-07-22
Filing date: 2002-07-22
Publication date: 2004-02-19

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable device that ensures rigidity of a circuit board and a reduced thickness of the device, in a portable device such as a portable telephone, an information processing terminal or a notebook-sized personal computer. <P>SOLUTION: A laminate film battery 16 is bonded to a rear side of a first board 7a with an arrangement of operation keys 10 on a front side, and a second board 7b is bonded to a rear side of the laminate film battery 16. A rear side of the second board 7b is supported by ribs 26 formed on an inner wall of a rear case 6 in opposition to the operation keys 10. Rigidity of the first board 7a is thereby ensured. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、携帯電話機や情報処理端末もしくは通信機能を備えたノート型パソコン等の携帯機器に関する。
【０００２】
【従来の技術】
近年、携帯電話機や情報処理端末もしくは通信機能を備えたノート型パソコン等の携帯機器は急速に普及してきており、機器の小型化、軽量化といった要求はますます強くなってきている。そのため、機器の厚みも出来るだけ薄くすることが求められている。
【０００３】
図７、図８に従来の携帯機器の一例として携帯電話機の概略を示す。図７は携帯電話機の断面図であり、図８は図７におけるＤ−Ｄ切断線による断面図である。これらの図に示すように、この携帯電話機１０１は、合成樹脂製のフロントケース１０５及びリアケース１０６が合わさってなる筐体１０３と、筐体１０３に収納される電池パック１０２と、電池パック１０２を覆うように筐体１０３に取り付けられる電池パック収納部カバー１０４を備えている。
【０００４】
フロントケース１０５には、電話番号や文字情報、画像データ等を表示する液晶表示部１０８が配置される窓１１８と、複数個の操作キー１１０がそれぞれ露出する開口１１１が設けられている。筐体１０３内に設置された回路基板１０７には、操作キー１１０や、通信用の回路や電力制御等の所定の機能を実現する回路素子１１３が設置されており、操作キー１１０は、回路基板１０７のフロント側の面上にフロントケース１０５の各開口１１１に対向してそれぞれ配置されている。
【０００５】
リアケース１０６には電池パック１０２を収納する電池パック収納部１０９がリアケース１０６を凹ませて形成されており、操作キー１１０のリア側に位置している。また、電池パック収納部１０９における底板１３１のフロント側の面上に複数設けられた突起状の支持部１２６が回路基板１０７のリア側の面に当接しており、この支持部１２６によって回路基板１０７はリア側から支持されている。なお、回路素子１１３は、回路基板１０７のリア側の面における各支持部１２６の間等に配置されている。また、回路基板１０７は図示しない固定構造によって筐体１０３に固定されている。
【０００６】
一方、電池パック１０２は、電池１１６と電池１１６を収納する箱状の外装部材１１５から成っており、電池１１６は外装部材１１５の内壁におけるフロント側の面に両面テープ１１７によって接着固定されている。また、電池１１６の一端からは導電線１２１が伸びており、電池パック１０２のフロント側に設けられた端子板１２０に接続されている。
【０００７】
また、電池パック１０２の両側面のフロント寄りに一対の凸部１２３、１２５が形成されており、リアケース１０６の電池パック収納部１０９における側壁のフロント寄りに設けられた係合部１１４、１２７にそれぞれ係合させることにより、電池パック１０２は電池パック収納部１０９内に、電池パック１０２のフロント側の面が電池パック収納部１０９の底板１３１に当接した形で収納される。
【０００８】
なお、電池パック１０２の一方の凸部１２５は係合部１２７に取り付けられたクッション部材１２２に当接しており、このクッション部材１２２の弾性によって電池パック１０２の係合が外れないようになっている。また、電池パック１０２が電池パック収納部１０９内に収納された状態においては、回路基板１０７上に配置された給電端子１１２が電池パック１０２の端子板１２０に、電池パック収納部１０９の底板１３１に設けられた開口１２４を介して当接するようになっており、この給電端子１２０を介して回路素子１１３や液晶表示部１０８等に電力が供給される。なお、機器に装着状態の電池パック１０２は、機器に設けられた図示しない接続端子に外部電源を接続することで充電可能となっている。
【０００９】
また、電池パック収納部カバー１０４は、電池パック１０２を覆うようにリアケース１０６に着脱自在に取り付けられている。なお、電池１１６のリア側と外装部材１１５の内壁のリア側の面との間には空隙１３０が存在しており、また、電池パック１０２のリア側の面と電池パック収納部カバー１０４の内面との間には、電池パック収納部カバー１０４が摺動できるようにするための空隙１３２が存在している。
【００１０】
ところで、操作キー１１０の押圧によって回路基板１０７はリア側に向けて力を受け、この力によって回路基板１０７は変形しようとするが、電池パック収納部１０９の底板１３１の支持部１２６が回路基板１０７をリア側から支持することによって、回路基板１０７のこのような変形を防いでいる。これによって、回路基板１０７上の回路素子１１３の欠損や、配線の断線などの不具合が発生するのを防止している。
【００１１】
このとき、電池パック１０２及び電池１１６は、電池パック収納部１０９の底板１３１に固定されているわけではなく、また、前述した空隙１３２又は空隙１３０の存在によって回路基板１０７の変形を防ぐための補強部材としては直接的には作用していない。
【００１２】
【発明が解決しようとする課題】
しかしながら、このような従来の携帯機器では、機器の厚みの薄型化を図る上で次のような問題があった。すなわち、機器の厚みを薄型化するためには、フロントケース１０５やリアケース１０６の部材の厚み、更には電池パック１０２等の厚みを薄くすることが考えられるが、例えば、電池パック収納部１０９の底板１３１の厚みを薄くすることは、回路基板１０７を支持する補強部材として底板１３１を作用させるために十分な剛性を底板１３１に持たせる必要があるので困難であった。
【００１３】
また、電池パック１０２の外装部材１１５の厚みを薄くすることも、電池パック１０２に要求される強度を確保するために難しかった。また、電池容量が一定のもと外装部材１１５の厚みを変えずに電池パック１０２の厚みを薄くするために電池パック１０２の表面積を広げることも考えられるが、この場合、外装部材１１５の重量が増えて機器の重量増につながるので好ましくない。更に、電池パック１０２内に存在する空隙１３０や電池パック１０２と電池パック収納部カバー１０４との間に生じる空隙１３２のために、機器の薄型化を図るには限度があった。
【００１４】
本発明は、斯かる実情に鑑み、操作キーが配置された回路基板の剛性を確保するとともに、機器の薄型化を図った携帯機器を提供しようとするものである。
【００１５】
【課題を解決するための手段】
本発明は、筐体内に収納された板状の電池と、前記電池から電力が供給される回路素子と、前記回路素子が搭載され前記筐体内に設置された回路基板と、前記回路基板に配置された操作キーを備えた携帯機器において、前記電池の一面は前記回路基板の前記操作キーの配置面に対向する面上の前記操作キーの配置領域に接着部材を介して固着され、前記電池の他の面は前記筐体の内壁に支持されることを特徴とする携帯機器にかかるものである。
【００１６】
もしくは、筐体内に収納された板状の電池と、前記電池から電力が供給される回路素子と、前記回路素子が搭載され前記筐体内に設置された第１の基板と、前記第１の基板に配置された操作キーを備えた携帯機器において、更に前記第１の基板とは別体の第２の基板を備えており、前記電池の一面は前記第１の基板の前記操作キーの配置面に対向する面上の前記操作キーの配置領域に接着部材を介して固着され、前記電池の他の面は前記第２の基板の一面に接着部材を介して固着される一方、前記第２の基板の他の面は前記筐体の内壁に前記操作キーに対向して設けられた突起により支持されることを特徴とする携帯機器にかかるものである。
【００１７】
このような構成によれば、操作キーが配置された回路基板に板状の電池が固着され、更に、電池の回路基板に固着された側の面と反対側の面が筐体の内壁によって支持されているので、電池自体や筐体が回路基板の補強部材となって回路基板の剛性が確保され、操作キーの押圧等による回路基板の変形を防ぐことができる。特に、電池が第２の基板を介して支持されていると、この第２の基板も補強部材となるので、操作キーが配置された第１の基板の剛性がより向上するので好ましい。なお、筐体の内壁に操作キーに対向して設けられた突起によって電池を操作キーに対向して支持するのが、操作キーの押圧による回路基板の変形を防ぐのに効果的である。
【００１８】
また、板状の電池自体を回路基板に固着するので、外装部材の中に電池が収納された電池パック等を装着する従来のものに比べて、外装部材が不要であるとともに、電池パックを装着するための電池パック収納部等を筐体に設ける必要がない。従って、外装部材等の厚みの分だけ機器を薄型化・軽量化することができるとともに、電池自体を薄型化することで機器をより薄くすることができる。
【００１９】
なお、前記電池の前記一面のほぼ全体が前記回路基板又は前記第１の基板に固着することが、回路基板又は第１の基板の剛性を高める上で好ましい。また、前記第１の基板と前記第２の基板が電気的に接続すれば、第１の基板と第２の基板との両方の基板上に回路素子等の電子部品を搭載することができ、電子部品を搭載するためのスペースを確保することができる。
【００２０】
また、更に、前記第１の基板及び前記第２の基板と別体の第３の基板が前記筐体内に設置されており、前記第１の基板と前記第３の基板が電気的に接続されているようにしても良い。
【００２１】
【発明の実施の形態】
実施の形態１．
図１は、本発明の第１の実施形態である携帯電話機の断面図であり、図２は図１の携帯電話機におけるＡ−Ａ切断線による断面図である。これらの図に示すように、本実施形態による携帯電話機１は、フロントケース５及びリアケース６からなる筐体３と、液晶表示部８と、操作キー１０と、回路素子１３と、合成樹脂からなる第１の基板７ａ及び第２の基板７ｂと、ラミネートフィルム電池１６を備えている。
【００２２】
ラミネートフィルム電池１６は、ゲル状のポリマー等をラミネートフィルムにより封止した薄型電池である。このラミネートフィルム電池１６は、金属等からなる外装部材を有しないため可撓性を有し、金属等の外装部材に密閉されたイオン電池等に比べて、加工における自由度が高く、また、電池の厚みを薄くすることができる。
【００２３】
フロントケース５には、液晶表示部８が設置される窓１８と、操作キー１０がそれぞれ露出する開口１１が設けられている。筐体３内に設置された第１の基板７ａのフロント側の面上には操作キー１０が配置されている。なお、第１の基板７ａは図示しない固定構造によって筐体３に固定されている。
【００２４】
第１の基板７ａのリア側の面には、ラミネートフィルム電池１６の一面が接着部材を用いて接着固定されている。また、ラミネートフィルム電池１６のリア側の面には、第２の基板７ｂが接着部材を用いて接着固定されている。つまり、ラミネートフィルム電池１６は、第１及び第２の基板７ａ，７ｂ間に挟み込まれた状態で筐体３内に収納されている。
【００２５】
図１では、ラミネートフィルム電池１６が、第１及び第２の基板７ａ，７ｂとほぼ同一形状、かつ、ほぼ同一面積からなり、ラミネートフィルム電池１６のほぼ全面が、両面接着テープ１７等の接着部材を用いて、これらの基板７ａ，７ｂに接着固定される場合が示されている。なお、上記接着部材は、両面接着テープ１７に代えて、マジックテープ（登録商標）や接着剤等の接着部材を用いて固定しても良い。また、ラミネートフィルム電池１６の端部は固着されておらず、第１の基板７ａ及び第２の基板７ｂよりもラミネートフィルム電池１６は若干小さい。
【００２６】
また、リアケース６の内壁には、壁面からフロント側に向けて突出する突起状のリブ２６が複数設けられている。これらのリブ２６は、各操作キー１０に対向して設けられ、第２の基板７ｂのリア側の面にリブ２６の先端面が当接することにより、第２の基板７ｂはリア側から支持されている。なお、各回路素子１３は、第１の基板７ａのフロント側における操作キー１０が配置された領域と異なる領域に設置されているとともに、第２の基板７ｂのリア側に設置されており、第２の基板７ｂのリア側に設置された各回路素子１３は、リブ２６が当接する領域の各リブ２６の間やこの領域とは異なる領域に配置されている。
【００２７】
また、ラミネートフィルム電池１６の一端部からはＦＰＣ２１が伸びており、このＦＰＣ２１の一端はラミネートフィルム電池１６内の集電体（図示せず）に接続されているとともに、ＦＰＣ２１の他端は、第１の基板７ａにおける操作キー１０が配置されている側の端部リア側の面上に設けられた端子２２に接続されている。また、第１の基板７ａにおける操作キー１０が配置されている側と反対側の端部リア側の面上に設けられた端子２３と、第２の基板７ｂの端部リア側の面上に設けられた端子２４とがＦＰＣ２０によって接続されており、これらＦＰＣ２０、２１を介して第１の基板７ａ上の回路素子１３や第２の基板７ｂ上の回路素子１３等にラミネートフィルム電池１６から電力が供給される。
【００２８】
なお、ＦＰＣとは、フレキシブルプリントケーブルの略であり、電気的接続手段の一種である。また、このＦＰＣ以外の電気的接続手段としては、ケーブル接続やバネ端子接続等であっても良い。なお、その他の構成は前述した従来の携帯電話機と同様である。
【００２９】
本実施の形態によれば、第１の基板７ａにラミネートフィルム電池１６が固着されているとともに、このラミネートフィルム電池１６のリア側にも第２の基板７ｂが固着されており、更に、第２の基板７ｂのリア側がリアケース６の内壁に各操作キー１０に対向して設けられたリブ２６によって支持されているので、ラミネートフィルム電池１６自体や第２の基板７ｂ、リアケース６が第１の基板７ａの補強部材となって操作キー１０が配置された第１の基板７ａの剛性が確保され、操作キー１０の押圧等による第１の基板７ａの変形を防止することができる。
【００３０】
これによって、第１の基板７ａ上に配置された回路素子１３等が欠損したり、各回路素子１３等をつなぐ配線が断線したりするのを防止することができる。また、ラミネートフィルム電池１６自体を第１の基板７ａに固着するので、前述したように外装部材１１５の中に電池１１６が収納された電池パック１０２を装着する従来の携帯電話機１０１に比べて、外装部材１１５が不要であるとともに、電池パック１０２を装着するための電池パック収納部１０９をリアケース６に設ける必要がない。従って、外装部材１１５の厚みや電池パック収納部１０９の底板１３１の厚みの分だけ機器の薄型化・軽量化を図ることができる。
【００３１】
また、電池容量が一定のもとで電池の表面積を広げて電池自体の厚みを薄型化しても、外装部材１１５がないため機器の重量増にはつながらないので、電池自体の厚みを薄型化することは機器の薄型化に効果的である。更に、前述したような空隙１３０、１３２が存在しない分だけ機器を更に薄型化することができる。
【００３２】
また、第１の基板７ａと第２の基板７ｂがＦＰＣ２０によって電気的に接続され、回路素子１３が第１の基板７ａのフロント側と第２の基板７ｂのリア側とに配置されているので、基板上における回路素子１３の実装面積が確保されるとともに、第１の基板７ａと第２の基板７ｂとの間にラミネートフィルム電池１６を挟むことで基板間のシールドが強化されるといった利点がある。回路素子１３の実装面積が確保され、基板間のシールドが強化されるので、薄型化が可能であるとともに機器を小型化することができる。
【００３３】
実施の形態２．
図３、図４は本発明の第２の実施形態である携帯電話機を示す図であり、図３はその断面図、図４は図３の携帯電話機におけるＢ−Ｂ切断線による断面図である。これらの図に示すように、この携帯電話機３１は、ラミネートフィルム電池４６のリア側の面が、第２の基板７ｂを介することなく、リアケース３６の内壁に操作キー４０に対向して設けられたリブ５６によって直接支持されており、この点が前述した第１の実施形態と異なっている。
【００３４】
なお、回路素子４３は第１の基板３７のフロント側の面上における操作キー４０が配置されている領域とは異なる領域に配置されており、また、その他の構成は図１、図２の携帯電話機１と同様である。このようにすると、第２の基板７ｂが存在しない分、機器をより薄くすることができる。
【００３５】
実施の形態３．
図５、図６は本発明の第３の実施形態である携帯電話機を示す図であり、図５はその断面図、図６は図５の携帯電話機におけるＣ−Ｃ切断線による断面図である。これらの図に示す携帯電話機６１では、第１の基板６７ａ及び第２の基板６７ｂの他にこれらとは別体の第３の基板６７ｃを備えており、第３の基板６７ｃが筐体６３内における液晶表示部６８のリア側に設置されているとともに図示しない固定構造によって固定されている。
【００３６】
また、第１の基板６７ａの端部フロント側の面上に設けられた端子８３と、第３の基板６７ｃにおいて第１の基板６７ａと対向する側の端部フロント側の面上に設けられた端子８４とがＦＰＣ７９によって接続されているとともに、第３の基板６７ｃにおいて第１の基板６７ａと対向する側の端部リア側の面上に設けられた端子８７と、第２の基板６７ｂにおいて第３の基板６７ｃと対向する側の端部リア側の面上に設けられた端子８５とがＦＰＣ８０によって接続されている。
【００３７】
そして、回路素子７３が第３の基板６７ｃのフロント側の面上及びリア側の面上や、第２の基板６７ｂのリア側の面上における各リブ８６間に配置されており、これらの点が前述した第１の実施形態と異なっている。なお、その他の構成は図１、図２の携帯電話機１と同様である。このようにしても、操作キー７０が配置された第１の基板６７ａの剛性を確保した上で、機器の薄型化・軽量化を図ることができるとともに、基板上における回路素子７３の実装面積が確保されるので、機器の小型化も図ることができる。なお、第３の基板６７ｃは、回路素子７３が配置された複数の基板からなる多層基板であっても良く、この場合、回路素子７３の実装面積が更に増え、機器をより小型化することができる。
【００３８】
なお、本発明の携帯機器では、電池パック１０２を用いる前述したような従来の携帯機器とは異なり、筐体内に実装された電池の交換は容易ではないが、近年における電池の改良によって電池への充電に際して電池が破裂する等の恐れが小さくなってきたとともに、電池自体の寿命が長くなってきたので、電池の交換は不要である。また、本発明の携帯機器は、上記した実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。
【００３９】
【発明の効果】
以上、説明したように本発明の携帯機器によれば、操作キーが配置された回路基板にフィルム状の電池を固着して、電池の回路基板に固着された側と反対側を筐体内壁によって支持したので、回路基板の剛性が確保され、操作キーの押圧等によって回路基板が変形して基板上に配置された回路素子等に不良が発生するのを防止することができる。
【００４０】
また、フィルム状の電池自体を回路基板に固着するので、電池パック等を装着する従来のものに比べて、機器の薄型化・軽量化を図ることができる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態である携帯電話機の断面図である。
【図２】図１の携帯電話機におけるＡ−Ａ切断線による断面図である。
【図３】本発明の第２の実施形態である携帯電話機の断面図である。
【図４】図３の携帯電話機におけるＢ−Ｂ切断線による断面図である。
【図５】本発明の第３の実施形態である携帯電話機の断面図である。
【図６】図５の携帯電話機におけるＣ−Ｃ切断線による断面図である。
【図７】従来の携帯電話機の断面図である。
【図８】図７の携帯電話機におけるＤ−Ｄ切断線による断面図である。
【符号の説明】
１，３１，６１　携帯電話機、３，３３，６３　筐体、
５，３５，６５　フロントケース、６，３６，６６　リアケース、
７ａ，３７，６７ａ　第１の基板、７ｂ，６７ｂ　第２の基板、
８，３８，６８　液晶表示部、１０，４０，７０　操作キー、
１３，４３，７３　回路素子、１６，４６，７６　ラミネートフィルム電池、
１７，４７，７７　両面接着テープ、２０，２１，５１，７９〜８１　ＦＰＣ、２６，５６，８６　リブ、６７ｃ　第３の基板[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mobile device such as a mobile phone, an information processing terminal, or a notebook computer having a communication function.
[0002]
[Prior art]
In recent years, mobile devices such as mobile phones, information processing terminals, and notebook personal computers having a communication function have been rapidly spreading, and demands for smaller and lighter devices have been increasing. Therefore, it is required that the thickness of the device be made as thin as possible.
[0003]
7 and 8 schematically show a mobile phone as an example of a conventional mobile device. FIG. 7 is a cross-sectional view of the mobile phone, and FIG. 8 is a cross-sectional view taken along line DD in FIG. As shown in these drawings, this mobile phone 101 is composed of a housing 103 in which a front case 105 and a rear case 106 made of synthetic resin are combined, a battery pack 102 housed in the housing 103, and a battery pack 102. A battery pack storage cover 104 is attached to the housing 103 so as to cover it.
[0004]
The front case 105 is provided with a window 118 in which a liquid crystal display unit 108 for displaying telephone numbers, character information, image data, and the like is arranged, and an opening 111 through which a plurality of operation keys 110 are exposed. An operation key 110 and a circuit element 113 for realizing predetermined functions such as a communication circuit and power control are installed on a circuit board 107 installed in the housing 103. On the front surface of 107, they are arranged facing the respective openings 111 of the front case 105.
[0005]
A battery case 109 for housing the battery pack 102 is formed in the rear case 106 by recessing the rear case 106, and is located on the rear side of the operation keys 110. Further, a plurality of projecting support portions 126 provided on the front surface of the bottom plate 131 in the battery pack housing portion 109 are in contact with the rear surface of the circuit board 107. Is supported from the rear side. The circuit element 113 is arranged between the support portions 126 on the rear surface of the circuit board 107 and the like. The circuit board 107 is fixed to the housing 103 by a fixing structure (not shown).
[0006]
On the other hand, the battery pack 102 includes a battery 116 and a box-shaped exterior member 115 that houses the battery 116, and the battery 116 is bonded and fixed to a front surface of an inner wall of the exterior member 115 with a double-sided tape 117. A conductive wire 121 extends from one end of the battery 116 and is connected to a terminal plate 120 provided on the front side of the battery pack 102.
[0007]
A pair of protrusions 123 and 125 are formed on both sides of the battery pack 102 near the front, and engaging portions 114 and 127 provided near the front of the side wall of the battery pack housing 109 of the rear case 106. By engaging each of them, the battery pack 102 is stored in the battery pack storage 109 with the front surface of the battery pack 102 abutting against the bottom plate 131 of the battery pack storage 109.
[0008]
The one convex portion 125 of the battery pack 102 is in contact with a cushion member 122 attached to the engaging portion 127, and the elasticity of the cushion member 122 prevents the battery pack 102 from being disengaged. . When the battery pack 102 is housed in the battery pack housing 109, the power supply terminals 112 arranged on the circuit board 107 are connected to the terminal plate 120 of the battery pack 102 and to the bottom plate 131 of the battery pack housing 109. The contact is made through an opening 124 provided, and power is supplied to the circuit element 113, the liquid crystal display unit 108, and the like via the power supply terminal 120. Note that the battery pack 102 mounted on the device can be charged by connecting an external power supply to a connection terminal (not shown) provided on the device.
[0009]
Further, the battery pack housing cover 104 is detachably attached to the rear case 106 so as to cover the battery pack 102. A gap 130 exists between the rear side of the battery 116 and the rear surface of the inner wall of the exterior member 115, and the rear surface of the battery pack 102 and the inner surface of the battery pack housing cover 104. A space 132 exists between the battery pack housing 104 and the battery pack housing 104 so that the battery pack housing cover 104 can slide.
[0010]
By the way, when the operation key 110 is pressed, the circuit board 107 receives a force toward the rear side, and the circuit board 107 tends to be deformed by this force, but the support 126 of the bottom plate 131 of the battery pack housing 109 is Is supported from the rear side, thereby preventing such deformation of the circuit board 107. This prevents defects such as loss of the circuit element 113 on the circuit board 107 and disconnection of the wiring.
[0011]
At this time, the battery pack 102 and the battery 116 are not fixed to the bottom plate 131 of the battery pack accommodating portion 109, and the reinforcement for preventing the deformation of the circuit board 107 due to the presence of the gap 132 or the gap 130 described above. It does not act directly as a member.
[0012]
[Problems to be solved by the invention]
However, such a conventional portable device has the following problems in reducing the thickness of the device. That is, in order to reduce the thickness of the device, it is conceivable to reduce the thickness of the members of the front case 105 and the rear case 106, and further reduce the thickness of the battery pack 102 and the like. It is difficult to reduce the thickness of the bottom plate 131 because the bottom plate 131 needs to have sufficient rigidity so that the bottom plate 131 acts as a reinforcing member for supporting the circuit board 107.
[0013]
Also, it was difficult to reduce the thickness of the exterior member 115 of the battery pack 102 in order to secure the strength required for the battery pack 102. In addition, it is conceivable to increase the surface area of the battery pack 102 in order to reduce the thickness of the battery pack 102 without changing the thickness of the exterior member 115 when the battery capacity is constant. In this case, the weight of the exterior member 115 is reduced. It is not preferable because it increases the weight of the device. Further, the space 130 existing in the battery pack 102 and the space 132 generated between the battery pack 102 and the battery pack housing cover 104 limit the thickness of the device.
[0014]
The present invention has been made in view of the above circumstances, and has as its object to provide a portable device in which the rigidity of a circuit board on which operation keys are arranged is ensured and the device is made thinner.
[0015]
[Means for Solving the Problems]
The present invention provides a plate-shaped battery housed in a housing, a circuit element to which power is supplied from the battery, a circuit board mounted with the circuit element and installed in the housing, and disposed on the circuit board. In the portable device provided with the operation keys, one surface of the battery is fixed to an area where the operation keys are arranged on a surface of the circuit board opposite to the surface where the operation keys are arranged via an adhesive member. The other surface is related to a portable device characterized by being supported by an inner wall of the housing.
[0016]
Alternatively, a plate-shaped battery housed in a housing, a circuit element to which power is supplied from the battery, a first board on which the circuit element is mounted and installed in the housing, and the first board A portable device provided with operation keys disposed on the first substrate, further comprising a second substrate separate from the first substrate, wherein one surface of the battery is a surface on which the operation keys are disposed on the first substrate. And the other surface of the battery is fixed to one surface of the second substrate via an adhesive member, while the other surface of the battery is fixed to the arrangement region of the operation keys on the surface facing the second key. The other surface of the substrate is supported by a projection provided on an inner wall of the housing so as to face the operation keys, according to the portable device.
[0017]
According to such a configuration, the plate-shaped battery is fixed to the circuit board on which the operation keys are arranged, and the surface of the battery opposite to the surface fixed to the circuit board is supported by the inner wall of the housing. Therefore, the battery itself and the housing serve as a reinforcing member for the circuit board, and the rigidity of the circuit board is ensured, and the deformation of the circuit board due to pressing of the operation key or the like can be prevented. In particular, it is preferable that the battery is supported via the second substrate, since the second substrate also functions as a reinforcing member, so that the rigidity of the first substrate on which the operation keys are arranged is further improved. It is effective that the battery is supported opposite to the operation key by a projection provided on the inner wall of the housing so as to oppose the operation key to prevent the circuit board from being deformed by pressing the operation key.
[0018]
In addition, since the plate-shaped battery itself is fixed to the circuit board, the exterior member is not required and the battery pack is mounted compared to a conventional battery in which the battery pack or the like in which the battery is stored is mounted in the exterior member. It is not necessary to provide a battery pack storage part or the like for the housing in the housing. Therefore, the device can be made thinner and lighter by the thickness of the exterior member and the like, and the device can be made thinner by making the battery itself thinner.
[0019]
In addition, it is preferable to fix substantially the entire surface of the battery to the circuit board or the first substrate in order to increase the rigidity of the circuit board or the first substrate. Further, if the first substrate and the second substrate are electrically connected, electronic components such as circuit elements can be mounted on both the first substrate and the second substrate, Space for mounting electronic components can be secured.
[0020]
Further, a third substrate separate from the first substrate and the second substrate is provided in the housing, and the first substrate and the third substrate are electrically connected. You may make it.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a cross-sectional view of a mobile phone according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the mobile phone of FIG. 1 taken along line AA. As shown in these drawings, the mobile phone 1 according to the present embodiment includes a housing 3 including a front case 5 and a rear case 6, a liquid crystal display unit 8, an operation key 10, a circuit element 13, and a synthetic resin. A first substrate 7a and a second substrate 7b, and a laminated film battery 16 are provided.
[0022]
The laminated film battery 16 is a thin battery in which a gel polymer or the like is sealed with a laminated film. The laminated film battery 16 has flexibility since it does not have an exterior member made of metal or the like, and has a higher degree of freedom in processing than an ion battery or the like sealed in an exterior member made of metal or the like. Can be reduced in thickness.
[0023]
The front case 5 is provided with a window 18 in which the liquid crystal display unit 8 is installed, and an opening 11 through which the operation keys 10 are exposed. Operation keys 10 are arranged on a front surface of the first substrate 7a installed in the housing 3. The first substrate 7a is fixed to the housing 3 by a fixing structure (not shown).
[0024]
One surface of the laminated film battery 16 is bonded and fixed to the rear surface of the first substrate 7a using an adhesive member. A second substrate 7b is adhered and fixed to the rear surface of the laminated film battery 16 using an adhesive member. In other words, the laminated film battery 16 is housed in the housing 3 while being sandwiched between the first and second substrates 7a and 7b.
[0025]
In FIG. 1, the laminated film battery 16 has substantially the same shape and substantially the same area as the first and second substrates 7a and 7b, and substantially the entire surface of the laminated film battery 16 is formed of an adhesive member such as a double-sided adhesive tape 17 or the like. FIG. 2 shows a case where the substrate is adhered and fixed to these substrates 7a and 7b. The adhesive member may be fixed using an adhesive member such as a magic tape (registered trademark) or an adhesive instead of the double-sided adhesive tape 17. The end of the laminated film battery 16 is not fixed, and the laminated film battery 16 is slightly smaller than the first substrate 7a and the second substrate 7b.
[0026]
The inner wall of the rear case 6 is provided with a plurality of projecting ribs 26 projecting from the wall surface toward the front side. These ribs 26 are provided so as to face the respective operation keys 10, and the second substrate 7b is supported from the rear side by the tip surface of the rib 26 contacting the rear surface of the second substrate 7b. ing. In addition, each circuit element 13 is installed in an area different from the area where the operation keys 10 are arranged on the front side of the first substrate 7a, and is installed on the rear side of the second substrate 7b. The circuit elements 13 installed on the rear side of the second substrate 7b are arranged between the ribs 26 in a region where the ribs 26 abut and in a region different from this region.
[0027]
An FPC 21 extends from one end of the laminated film battery 16, one end of the FPC 21 is connected to a current collector (not shown) in the laminated film battery 16, and the other end of the FPC 21 It is connected to a terminal 22 provided on the rear surface of the end on the side where the operation keys 10 are arranged on one substrate 7a. Also, the terminal 23 provided on the end rear surface of the first substrate 7a opposite to the side on which the operation keys 10 are arranged, and the terminal 23 provided on the end rear surface of the second substrate 7b. The terminal 24 provided is connected to the circuit element 13 on the first substrate 7a, the circuit element 13 on the second substrate 7b, and the like via the FPCs 20 and 21 by the FPC 20. Is supplied.
[0028]
Note that FPC is an abbreviation for flexible printed cable, and is a type of electrical connection means. Further, as an electrical connection means other than the FPC, a cable connection, a spring terminal connection, or the like may be used. Other configurations are the same as those of the above-described conventional mobile phone.
[0029]
According to the present embodiment, the laminated film battery 16 is fixed to the first substrate 7a, and the second substrate 7b is also fixed to the rear side of the laminated film battery 16. The rear side of the substrate 7b is supported by the ribs 26 provided on the inner wall of the rear case 6 so as to face the operation keys 10, so that the laminated film battery 16 itself, the second substrate 7b, and the rear case 6 The rigidity of the first substrate 7a on which the operation keys 10 are arranged as a reinforcing member of the substrate 7a is secured, and deformation of the first substrate 7a due to pressing of the operation keys 10 or the like can be prevented.
[0030]
Thus, it is possible to prevent the circuit elements 13 and the like disposed on the first substrate 7a from being damaged, and to prevent disconnection of the wiring connecting the circuit elements 13 and the like. Further, since the laminated film battery 16 itself is fixed to the first substrate 7a, as compared with the conventional mobile phone 101 in which the battery pack 102 in which the battery 116 is housed in the exterior member 115 is attached as described above, The member 115 is not required, and the battery pack housing 109 for mounting the battery pack 102 does not need to be provided in the rear case 6. Therefore, the thickness and weight of the device can be reduced by the thickness of the exterior member 115 and the thickness of the bottom plate 131 of the battery pack housing 109.
[0031]
Further, even if the surface area of the battery is increased and the thickness of the battery itself is reduced under the condition that the battery capacity is constant, the thickness of the battery itself is not reduced because the exterior member 115 is not provided, which does not increase the weight of the device. Is effective for thinning the equipment. Further, the thickness of the device can be further reduced by the absence of the gaps 130 and 132 as described above.
[0032]
Further, the first substrate 7a and the second substrate 7b are electrically connected by the FPC 20, and the circuit elements 13 are arranged on the front side of the first substrate 7a and the rear side of the second substrate 7b. In addition, the mounting area of the circuit element 13 on the substrate is secured, and the shielding between the substrates is strengthened by sandwiching the laminated film battery 16 between the first substrate 7a and the second substrate 7b. is there. Since the mounting area of the circuit element 13 is secured and the shield between the substrates is strengthened, it is possible to reduce the thickness and downsize the device.
[0033]
Embodiment 2 FIG.
3 and 4 are views showing a mobile phone according to a second embodiment of the present invention, FIG. 3 is a cross-sectional view thereof, and FIG. 4 is a cross-sectional view of the mobile phone shown in FIG. . As shown in these figures, in the portable telephone 31, the rear surface of the laminated film battery 46 is provided on the inner wall of the rear case 36 so as to face the operation keys 40 without interposing the second substrate 7b. This is different from the above-described first embodiment in that it is directly supported by the ribs 56.
[0034]
The circuit element 43 is arranged in an area different from the area in which the operation keys 40 are arranged on the front surface of the first substrate 37. It is the same as the telephone 1. By doing so, the device can be made thinner because the second substrate 7b does not exist.
[0035]
Embodiment 3 FIG.
5 and 6 are views showing a mobile phone according to a third embodiment of the present invention, FIG. 5 is a cross-sectional view thereof, and FIG. 6 is a cross-sectional view of the mobile phone shown in FIG. . In the mobile phone 61 shown in these figures, a third substrate 67c separate from the first substrate 67a and the second substrate 67b is provided in addition to the first substrate 67a and the second substrate 67b. And is fixed by a fixing structure (not shown).
[0036]
Further, the terminals 83 provided on the front surface of the end portion of the first substrate 67a and the terminal 83 provided on the front surface of the end portion of the third substrate 67c facing the first substrate 67a. The terminals 84 are connected to each other by the FPC 79, and the terminals 87 provided on the rear surface of the third substrate 67c at the end opposite to the first substrate 67a, and the terminals 87 provided on the second substrate 67b. The terminal 85 provided on the rear surface of the end opposite to the third substrate 67 c is connected by the FPC 80.
[0037]
The circuit elements 73 are arranged between the ribs 86 on the front surface and the rear surface of the third substrate 67c and on the rear surface of the second substrate 67b. Is different from the first embodiment described above. Other configurations are the same as those of the mobile phone 1 of FIGS. Even in this case, while securing the rigidity of the first substrate 67a on which the operation keys 70 are arranged, the device can be made thinner and lighter, and the mounting area of the circuit element 73 on the substrate can be reduced. As a result, the size of the device can be reduced. The third substrate 67c may be a multilayer substrate including a plurality of substrates on which the circuit elements 73 are arranged. In this case, the mounting area of the circuit elements 73 is further increased, and the size of the device can be further reduced. it can.
[0038]
In the portable device of the present invention, unlike the above-described conventional portable device using the battery pack 102, it is not easy to replace the battery mounted in the housing. Since the risk of the battery exploding during charging has been reduced and the life of the battery itself has been prolonged, it is not necessary to replace the battery. Further, the portable device of the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention.
[0039]
【The invention's effect】
As described above, according to the portable device of the present invention, the film-shaped battery is fixed to the circuit board on which the operation keys are arranged, and the side opposite to the side of the battery fixed to the circuit board is defined by the inner wall of the housing. Since the circuit board is supported, the rigidity of the circuit board is ensured, and it is possible to prevent the circuit board from being deformed due to the pressing of the operation key or the like and the occurrence of defects in the circuit elements and the like arranged on the board.
[0040]
Further, since the battery in the form of a film is fixed to the circuit board, the device can be made thinner and lighter than a conventional battery having a battery pack or the like.
[Brief description of the drawings]
FIG. 1 is a sectional view of a mobile phone according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line AA of the mobile phone of FIG.
FIG. 3 is a sectional view of a mobile phone according to a second embodiment of the present invention.
FIG. 4 is a cross-sectional view of the mobile phone of FIG. 3 taken along section line BB.
FIG. 5 is a sectional view of a mobile phone according to a third embodiment of the present invention.
6 is a cross-sectional view of the mobile phone of FIG. 5 taken along the line CC.
FIG. 7 is a sectional view of a conventional mobile phone.
8 is a cross-sectional view of the mobile phone of FIG. 7 taken along section line DD.
[Explanation of symbols]
1,31,61 mobile phone, 3,33,63 housing,
5, 35, 65 front case, 6, 36, 66 rear case,
7a, 37, 67a first substrate, 7b, 67b second substrate,
8, 38, 68 liquid crystal display, 10, 40, 70 operation keys,
13, 43, 73 circuit element, 16, 46, 76 laminated film battery,
17, 47, 77 Double-sided adhesive tape, 20, 21, 51, 79 to 81 FPC, 26, 56, 86 rib, 67c Third substrate

Claims

A plate-shaped battery housed in a housing, a circuit element to which power is supplied from the battery, a circuit board mounted with the circuit element and installed in the housing, and an operation key arranged on the circuit board In a mobile device equipped with
One surface of the battery is fixed to an arrangement area of the operation keys on a surface of the circuit board opposite to the arrangement surface of the operation keys via an adhesive member, and the other surface of the battery is supported by an inner wall of the housing. Mobile device characterized by being performed.

The mobile device according to claim 1, wherein a protrusion for supporting another surface of the battery is provided on an inner wall of the housing so as to face the operation key.

A plate-shaped battery housed in a housing, a circuit element to which power is supplied from the battery, a first board mounted with the circuit element and installed in the housing, and arranged on the first board In a portable device provided with the operation keys,
The battery further includes a second substrate that is separate from the first substrate, and one surface of the battery is provided in a region where the operation keys are arranged on a surface of the first substrate that faces the surface where the operation keys are arranged. The other surface of the battery is fixed to one surface of the second substrate via an adhesive member, and the other surface of the second substrate is fixed to the inner wall of the housing. A portable device characterized by being supported by a projection provided opposite to an operation key.

The portable device according to claim 1, wherein the entire surface of the battery is adhered to the circuit board or the first substrate.

The portable device according to claim 3, wherein the first substrate and the second substrate are electrically connected.

Further, a third substrate separate from the first substrate and the second substrate is provided in the housing, and the first substrate and the third substrate are electrically connected. The portable device according to claim 3, wherein:

A laminated film battery housed in a housing consisting of a front case and a rear case, a plurality of circuit elements that are operated by being supplied with power from the laminated film battery, and the circuit elements are mounted and installed in the housing. In a portable device including a first substrate and a second substrate, an operation key disposed on a front side of the first substrate, and a liquid crystal display unit disposed in an opening provided in the front case,
Both surfaces of the laminated film battery are fixed to a rear surface of the first substrate and a front surface of the second substrate,
A rear surface of the second substrate is supported by a protruding rib provided on the inner wall of the rear case so as to face the operation keys,
The portable device, wherein the circuit elements are arranged on a front side of the first substrate and a rear side of the second substrate.

A laminated film battery housed in a housing consisting of a front case and a rear case, a plurality of circuit elements that are operated by being supplied with power from the laminated film battery, and the circuit elements are mounted and installed in the housing. In a portable device including a second substrate and a third substrate, a first substrate on which operation keys are disposed on a front side, and a liquid crystal display unit disposed on an opening provided in the front case,
Both surfaces of the laminated film battery are fixed to a rear surface of the first substrate and a front surface of the second substrate,
A rear surface of the second substrate is supported by a protruding rib provided on the inner wall of the rear case so as to face the operation keys,
The third substrate is provided on the rear side of the liquid crystal display unit, and is FPC-connected to the first substrate and the second substrate, respectively.
The portable device, wherein the circuit elements are arranged on a rear side of the second substrate and on a front side and a rear side of the third substrate.