JP3921442B2

JP3921442B2 - Impact detection structure for mobile terminal equipment

Info

Publication number: JP3921442B2
Application number: JP2002351508A
Authority: JP
Inventors: 浩史山田
Original assignee: NEC AccessTechnica Ltd
Current assignee: NEC AccessTechnica Ltd
Priority date: 2002-12-03
Filing date: 2002-12-03
Publication date: 2007-05-30
Anticipated expiration: 2022-12-03
Also published as: JP2004184229A

Description

【０００１】
【発明の属する技術分野】
本発明は携帯端末機器の衝撃検出構造に係り、特にバイブレータを有する携帯端末機器の衝撃検出構造に関する。
【０００２】
【従来の技術】
携帯端末機器が破損した場合、携帯端末機器の破損状況によっては、落下等の衝撃による破損であるのか、外部押圧等による破損であるのか判別しにくく、携帯端末機器の破損状況から破損原因を推測し、再現評価にて原因をつきとめ改善対策を施すため、改善対策までに時間がかかる。また、再現評価にしてもあくまで推測にすぎないため、真の破損原因が不明のため、適切な改善対策を施せない可能性がある。
【０００３】
そこで、衝撃検知機能を備えた携帯端末機器が従来より知られている（例えば、特許文献１、２参照）。特許文献１記載の携帯端末機器は、携帯端末機器に加わった衝撃を検出する衝撃センサと、衝撃センサで衝撃が検出されたときに携帯端末機器の自己診断を実行する自己診断回路と、自己診断回路により異常が認められた場合に、その障害内容を記憶する障害記憶メモリと、自己診断メモリに記憶された障害内容を表示する液晶表示器とから衝撃を検出して表示する構成とされている。
【０００４】
また、特許文献２記載の携帯端末機器は、機器本体に衝撃センサを設け、制御部に衝撃センサから設定値より大きい信号が入力したとき動作して携帯端末機器の表示部に衝撃があったことを表示させると共に、それをメモリに記憶させるように作用する割り込みコントローラを設けた構成である。
【０００５】
【特許文献１】
特開平６−１６９２８５号公報（第３−４頁、図１、図２）
【特許文献２】
特開平１１−２２５１８８号公報（第２頁、図１）
【０００６】
【発明が解決しようとする課題】
しかるに、上記の特許文献１及び２記載の携帯端末機器は、いずれも衝撃センサを用いて電気回路により落下等の衝撃を検出する構成であるため、衝撃、経年変化その他何らかの原因により、衝撃センサを含む電気回路系の故障が発生した場合は衝撃を検出できず、確実に衝撃を検出することは困難であるという問題がある。また、衝撃検出用の衝撃センサ及びメモリ等を追加するため、それらの実装範囲が必要となり、装置サイズに影響を与えるという問題がある。
【０００７】
本発明は以上の点に鑑みなされたもので、携帯端末機器の内部のバイブレータに位置する筐体及びプリント基板上に感圧紙を設けることにより、現状の実装スペースを変更せず、また、電気回路を利用せずに、短時間の解析で、より確実にある一定以上の衝撃を受けたことを判別できる構造を有する携帯端末機器の衝撃検出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】
上記の目的を達成するため、第１の発明は、バイブレータ駆動用モータと、バイブレータ駆動用モータのシャフトに固定されて回転する分銅とよりなる片持ち構造のバイブレータが筐体内部に設けられた携帯端末機器の衝撃検出構造であって、携帯端末機器の筐体内の分銅の周囲の少なくとも１ヶ所の離間対向する位置に、接触により色が変化する感圧紙を設け、一定以上の衝撃により分銅が感圧紙に接触するように構成したものである。
【０００９】
この発明では、携帯端末機器の内部にある既存の片持ち構造のバイブレータの分銅の周囲の少なくとも１ヶ所の離間対向する位置に感圧紙を設けるようにしたため、携帯端末機器に一定上の落下等の衝撃があると分銅位置が変位して感圧紙に接触することで感圧紙の色が変化するようにできる。
【００１０】
また、上記の目的を達成するため、第２の発明は、分銅に離間対向する筐体の部分に設置された透明の窓レンズと、窓レンズに感圧紙を接着する透明の接着部材とを更に有することを特徴とする。この発明では、窓レンズを通して窓レンズに接着された感圧紙の色の変化を視認することができる。
【００１１】
また、上記の目的を達成するため、第３の発明は、バイブレータ駆動用モータは、外周側面がゴムホルダにより覆われており、衝撃により変形可能なゴムホルダの圧縮力を利用して携帯端末機器の筐体内に固定されていることを特徴とする。この発明では、携帯端末機器に衝撃が加わると、ゴムホルダが変形するため、衝撃が加わった時の分銅の方持ち部の変位量を大きくすることができる。
【００１２】
また、上記の目的を達成するため、第４の発明は、感圧紙を顕色剤層を持つ第１の感圧紙と、発色剤層を持つ第２の感圧紙との積層構造とし、第１の感圧紙が分銅に離間対向するように固定されていることを特徴とする。この発明では、第１の感圧紙を通して第２の感圧紙に力が加わると、第１の感圧紙の色が第２の感圧紙の発色剤の色に変化するようにできる。
【００１３】
また、上記の目的を達成するため、第５の発明は、感圧紙を分銅に対し対面する２ヶ所の離間対向する位置に設けられていることを特徴とする。この発明では、分銅の断面形状が半円形であっても、衝撃があったときはどちらか一方の感圧紙の色を変化させることができる。
【００１４】
更に、上記の目的を達成するため、第６の発明は、分銅と感圧紙の表面との間の隙間の距離は、製品の衝撃耐久仕様に応じて設定されていることを特徴とする。この発明では、製品の衝撃耐久仕様以上の衝撃が携帯端末機器に加わったときに、分銅が感圧紙に接触するようにできる。
【００１５】
【発明の実施の形態】
次に、本発明の実施の形態について図面と共に説明する。図１は本発明になる携帯端末機器の衝撃検出構造の第１の実施の形態の通常時の構成断面図を示す。同図において、筐体ケース１は、内部にプリント基板３を保持するリブ１ａが設置されている。筐体カバー２は、内部にプリント基板３を保持するリブ２ａが設置されている。また、筐体カバー２には、内部にバイブレータ駆動用モータ（以下、バイブモータという）４を圧入固定するためのバイブモータ保持部２ｂが設けられている。
【００１６】
バイブモータ４は、そのシャフトに断面が半円形又は扇形状の分銅４ａの中心部が貫通固定されており、分銅４ａと共にバイブレータを構成する直流モータであり、分銅４ａの回転により携帯端末機器本体を振動させて、着信報知などを行うために使用される公知のバイブレータ駆動用モータである。このバイブモータ４の外周部はゴムホルダ５により覆われている。バイブモータ４はこのゴムホルダ５の圧縮力により、筐体カバー２とプリント基板３に挟まれ固定されている。
【００１７】
バイブモータ４の片持ち構造の分銅４ａと筐体カバー２との間の筐体カバー壁には、テープ８ａより二周り小さい発色剤層を持つ支持体（感圧紙）６ａとテープ８ａより一周り小さい顕色剤層を持つ支持体（感圧紙）７ａが、テープ８ａ、発色剤層を持つ支持体（感圧紙）６ａ、顕色剤層を持つ支持体（感圧紙）７ａの順に積層され、貼付されている。最上層の顕色剤層を持つ支持体（感圧紙）７ａと分銅４ａの外周面との間には隙間９が形成されている。
【００１８】
同様に、バイブモータ４の片持ち構造の分銅４ａとプリント基板３との間のプリント基板３上にも、テープ８ｂより二周り小さい発色剤層を持つ支持体（感圧紙）６ｂとテープ８ｂより一周り小さい顕色剤層を持つ支持体（感圧紙）７ｂが、テープ８ｂ、発色剤層を持つ支持体（感圧紙）６ｂ、顕色剤層を持つ支持体（感圧紙）７ｂの順に積層され、貼付されている。最上層の顕色剤層を持つ支持体（感圧紙）７ｂと分銅４ａの外周面との間には隙間１０が形成されている。
【００１９】
ここで、上記のテープ８ａと８ｂ、発色剤層を持つ支持体（感圧紙）６ａと６ｂ、顕色剤層を持つ支持体（感圧紙）７ａと７ｂとからなる積層構造を、バイブモータ４の片持ち構造の分銅４ａの対面二ヵ所にしているのは、バイブモータ４の片持ち構造の分銅４ａの断面形状が半円形で構成されることが多いためである。また、隙間９と１０の距離を調整することにより、製品の衝撃耐久仕様外の衝撃を受けたことを判別できるようにされている。すなわち、隙間９と１０は、製品の衝撃耐久仕様に応じて距離が設定されている。
【００２０】
次に、落下等の衝撃が図１の携帯端末機器に加わった場合に構造について説明する。図２は本発明になる携帯端末機器の衝撃検出構造の第１の実施の形態の衝撃付与後の構成断面図を示す。同図中、図１と同一構成部分には同一符号を付し、その説明を省略する。図１の構造の携帯端末機器が落下等の衝撃を受けると、バイブモータ４の片持ち構造の分銅４ａがゴムホルダ５の変形によりプリント基板３側に傾くか、もしくは、プリント基板３が変形し、隙間１０は狭くなる。
【００２１】
衝撃が大きいほど、隙間１０は狭くなり、製品の衝撃耐久仕様で定められた、ある一定以上の衝撃が加わると、図２にIで示すようにバイブモータ４の片持ち構造の分銅４ａとプリント基板３上に貼付されている顕色剤層を持つ支持体（感圧紙）７ｂが接触し、顕色剤層を持つ支持体（感圧紙）７ｂを通して発色剤層を持つ支持体（感圧紙）６ｂが押圧されることから、顕色剤層を持つ支持体（感圧紙）７ｂに発色剤層を持つ支持体（感圧紙）６ｂの発色剤が付着する。衝撃付与動作が収束すると、携帯端末機器は図１の状態に戻る。従って、顕色剤層を持つ支持体（感圧紙）７ｂに発色剤層を持つ支持体（感圧紙）６ｂの発色剤が付着していることを検出することにより、一定以上の衝撃が加わったことが分かる。
【００２２】
図３は本発明になる携帯端末機器の衝撃検出構造の第１の実施の形態の衝撃付与後の他の例の構成断面図を示す。同図中、図１と同一構成部分には同一符号を付し、その説明を省略する。図１の構造の携帯端末機器が落下等の衝撃を受けると、衝撃が加わった方向によっては図２とは異なり、バイブモータ４の片持ち構造の分銅４ａがゴムホルダ５の変形により筐体カバー２側に傾くか、もしくは、筐体カバー２が変形し、隙間９は狭くなる。
【００２３】
衝撃が大きいほど、隙間９は狭くなり、製品の衝撃耐久仕様で定められた、ある一定以上の衝撃が加わると、図３にIIで示すように、バイブモータ４の片持ち構造の分銅４ａと筐体カバー２壁に貼付されている顕色剤層を持つ支持体（感圧紙）７ａが接触し、顕色剤層を持つ支持体（感圧紙）７ａを通して発色剤層を持つ支持体（感圧紙）６ａが押圧されることから、顕色剤層を持つ支持体（感圧紙）７ａに発色剤層を持つ支持体（感圧紙）６ａの発色剤が付着する。
【００２４】
衝撃付与動作が収束すると、携帯端末機器は図１の状態に戻る。従って、顕色剤層を持つ支持体（感圧紙）７ａに発色剤層を持つ支持体（感圧紙）６ａの発色剤が付着していることを検出することにより、一定以上の衝撃が加わったことが分かる。
【００２５】
このように、本実施の形態によれば、筐体内に本来存在していた空間内にテープ８ａ（８ｂ）、発色剤層を持つ支持体（感圧紙）６ａ（６ｂ）、顕色剤層を持つ支持体（感圧紙）７ａ（７ｂ）の積層構造を設け、既存のバイブモータ４の分銅４ａを利用し、ある一定以上の衝撃が加わると、分銅４ａが上記の積層構造に接触するようにして顕色剤層を持つ支持体（感圧紙）７ａ又は７ｂの色が、発色剤層を持つ支持体（感圧紙）６ａ又は６ｂの発色剤の色に変化するようにしたため、現状の実装スペースを変更せず、また、電気回路を利用せずに、短時間の解析で、より確実にある一定以上の衝撃を受けたことを判別できる。
【００２６】
次に、本発明の第２の実施の形態について説明する。図４は本発明になる携帯端末機器の衝撃検出構造の第２の実施の形態の通常時の構成断面図を示す。同図において、筐体ケース１１は、内部にプリント基板１３を保持するリブ１１ａが設置されている。筐体カバー１２は、内部にプリント基板１３を保持するリブ１２ａが設置されている。また、筐体カバー１２には、内部にバイブモータ１４を圧入固定するためのバイブモータ保持部１２ｂが設けられている。
【００２７】
バイブモータ１４は、そのシャフトに断面が半円形又は扇形状の分銅１４ａの中心部が貫通固定されており、前記バイブモータ４と同様構造の公知のバイブレータ駆動用モータである。このバイブモータ１４の外周部にはゴムホルダ１５が取り付けられており、バイブモータ１４はゴムホルダ１５の圧縮力により、筐体カバー１２とプリント基板１３に挟まれ固定されている。
【００２８】
バイブモータ１４の片持ち構造の分銅１４ａに離間対向する筐体カバー１２の部分には、透明の窓レンズ２１が設置されており、窓レンズ２１は、透明の両面テープ２２の一方の面により筐体カバー１２に貼付固定されている。上記の両面テープ２２の他方の面はテープ１８ａに貼付されている。
【００２９】
更に、テープ１８ａ上には、テープ１８ａより二周り小さい発色剤層を持つ支持体（感圧紙）１６ａと、テープ１８ａより一周り小さい顕色剤層を持つ支持体（感圧紙）１７ａとが、テープ１８ａ、発色剤層を持つ支持体（感圧紙）１６ａ、顕色剤層を持つ支持体（感圧紙）１７ａの順に積層されており、最上層の顕色剤層を持つ支持体（感圧紙）１７ａと分銅１４ａの外周面との間には隙間１９が形成されている。
【００３０】
一方、バイブモータ１４の片持ち構造の分銅１４ａとプリント基板１３との間のプリント基板１３上には、テープ１８ｂより二周り小さい発色剤層を持つ支持体（感圧紙）１６ｂとテープ１８ｂより一周り小さい顕色剤層を持つ支持体（感圧紙）１７ｂが、テープ１８ｂ、発色剤層を持つ支持体（感圧紙）１６ｂ、顕色剤層を持つ支持体（感圧紙）１７ｂの順に積層され、貼付されている。最上層の顕色剤層を持つ支持体（感圧紙）１７ｂと分銅１４ａの外周面との間には隙間２０が形成されている。
【００３１】
ここで、第１の実施の形態と同様に上記のテープ１８ａと１８ｂ、発色剤層を持つ支持体（感圧紙）１６ａと１６ｂ、顕色剤層を持つ支持体（感圧紙）１７ａと１７ｂとからなる積層構造を、バイブモータ１４の片持ち構造の分銅１４ａの対面二ヵ所にしているのは、バイブモータ１４の片持ち構造の分銅１４ａの断面形状が半円形で構成されることが多いためであるが、バイブモータ１４の片持ち構造の分銅１４ａの周囲に少なくとも一ヶ所あればよい。また、隙間１９と２０は、製品の衝撃耐久仕様に応じて距離が設定されている。
【００３２】
次に、落下等の衝撃が図４の携帯端末機器に加わった場合に構造について説明する。図５は本発明になる携帯端末機器の衝撃検出構造の第２の実施の形態の衝撃付与後の構成断面図を示す。同図中、図４と同一構成部分には同一符号を付し、その説明を省略する。図４の構造の携帯端末機器が落下等の衝撃を受けると、バイブモータ１４の片持ち構造の分銅１４ａがゴムホルダ１５の変形によりプリント基板１３側に傾くか、もしくはプリント基板１３が変形し、隙間２０は狭くなる。
【００３３】
衝撃が大きいほど、隙間２０は狭くなり、製品の衝撃耐久仕様で定められた、ある一定以上の落下等の衝撃が加わると、図５にIIIで示すようにバイブモータ１４の片持ち構造の分銅１４ａとプリント基板１３上に貼付されている顕色剤層を持つ支持体（感圧紙）１７ｂが接触し、顕色剤層を持つ支持体（感圧紙）１７ｂを通して発色剤層を持つ支持体（感圧紙）１６ｂが押圧されることから、顕色剤層を持つ支持体（感圧紙）１７ｂに発色剤層を持つ支持体（感圧紙）１６ｂの発色剤が付着する。衝撃付与動作が収束すると、携帯端末機器は図４の状態に戻る。従って、顕色剤層を持つ支持体（感圧紙）１７ｂに発色剤層を持つ支持体（感圧紙）１６ｂの発色剤が付着していることを検出することにより、製品の衝撃耐久仕様外の衝撃を受けたことが分かる。
【００３４】
図６は本発明になる携帯端末機器の衝撃検出構造の第２の実施の形態の衝撃付与後の他の例の構成断面図を示す。同図中、図４と同一構成部分には同一符号を付し、その説明を省略する。図４の構造の携帯端末機器が落下等の衝撃を受けると、衝撃が加わった方向によっては図５とは異なり、バイブモータ１４の片持ち構造の分銅１４ａがゴムホルダ１５の変形により筐体カバー１２側に傾くか、もしくは、筐体カバー１２が変形し、隙間１９は狭くなる。
【００３５】
落下等の衝撃が大きいほど、隙間１９は狭くなり、製品の衝撃耐久仕様で定められた、ある一定以上の落下衝撃が加わると、図６にIVで示すようにバイブモータ１４の片持ち構造の分銅１４ａと顕色剤層を持つ支持体（感圧紙）１７ａが接触し、顕色剤層を持つ支持体（感圧紙）１７ａを通して発色剤層を持つ支持体（感圧紙）１６ａが押圧されることから、顕色剤層を持つ支持体（感圧紙）１７ａに発色剤層を持つ支持体（感圧紙）１６ａの発色剤が付着する。
【００３６】
衝撃付与動作が収束すると、携帯端末機器は図４の状態に戻る。このとき、窓レンズ２１を通して携帯端末機器の外部から顕色剤層を持つ支持体（感圧紙）１７ａに発色剤層を持つ支持体（感圧紙）１６ａの発色剤が付着したことの確認ができる。
【００３７】
このように、本実施の形態によれば、第１の実施の形態と同様に、現状の実装スペースを変更せず、また、電気回路を利用せずに、短時間の解析で、より確実にある一定以上の衝撃を受けたことを判別でき、更に本実施の形態では、窓レンズ２１及び両面テープ２２を通して、発色剤層を持つ支持体（感圧紙）１６ａの色を携帯端末機器の筐体を分解することなく、筐体の外部から視認できるため、発色剤層を持つ支持体（感圧紙）１６ａの色が顕色剤層を持つ支持体（感圧紙）１７ａの色に変わったことを視認できたときは、一定以上の衝撃が加わったことが確認できる。
【００３８】
なお、本発明は以上の実施の形態に限定されるものではなく、例えば図１のテープ８ａと８ｂ、発色剤層を持つ支持体（感圧紙）６ａと６ｂ、顕色剤層を持つ支持体（感圧紙）７ａと７ｂの順に積層されている構成は、バイブモータ４の片持ち構造の分銅４ａの周囲に少なくとも一ヶ所設けられていればよい。また、発色剤層を持つ支持体（感圧紙）６ａ、６ｂと、顕色剤層を持つ支持体（感圧紙）７ａ、７ｂとが一部品で構成されている支持体（感圧紙）を使用してもよい。同様に、発色剤層を持つ支持体（感圧紙）１６ａ、１６ｂと、顕色剤層を持つ支持体（感圧紙）１７ａ、１７ｂが一部品で構成されている支持体（感圧紙）を使用してもよい。
【００３９】
また、図４の窓レンズ２１と筐体カバー１２の固定は、接着剤にて固定、もしくは、圧入固定等でもよい。また、発色剤層を持つ支持体（感圧紙）１６ａ、１６ｂの色は、窓レンズ２１を通して内部の顕色剤層を持つ支持体（感圧紙）１７ａが確認できる色であれば何でもよい。
【００４０】
【発明の効果】
以上説明したように、本発明によれば、以下の種々の特長を有するものである。
【００４１】
（１）携帯端末機器の内部にある既存の片持ち構造のバイブレータの分銅の周囲の少なくとも１ヶ所の離間対向する位置に感圧紙を設けることにより、携帯端末機器に一定上の落下等の衝撃があると分銅位置が変位して感圧紙に接触することで感圧紙の色が変化するようにしたため、現状の携帯端末機器の実装スペースを変更することなく、また電気回路を利用せずに、短時間の解析で、より確実に衝撃を受けたことを感圧紙の色で判別できる。
【００４２】
（２）窓レンズを通して感圧紙の色の変化を視認することができるようにしたため、携帯端末機器の筐体を分解することなく、携帯端末機器に一定以上の衝撃が加わったことが確認できる。
【００４３】
（３）携帯端末機器に衝撃が加わると、ゴムホルダが変形することにより、衝撃が加わった時の分銅の方持ち部の変位量を大きくするようにしたため、衝撃が加わったことをより検出し易くできる。
【００４４】
（４）感圧紙を顕色剤層を持つ第１の感圧紙を通して、発色剤層を持つ第２の感圧紙に力が加わると、第１の感圧紙の色が第２の感圧紙の発色剤の色に変化するようにしたため、電気回路を使用することなく、携帯端末機器に一定以上の衝撃が加わったことが第１の感圧紙の色により簡単に確認することができる。
【００４５】
（５）感圧紙を分銅に対し対面する２ヶ所の離間対向する位置に設けることにより、分銅の断面形状が半円形であっても、衝撃があったときはどちらか一方の感圧紙の色を変化させることができるため、分銅の断面形状が半円形であっても、衝撃が加わったことを確実に検出することができる。
【００４６】
（６）分銅と感圧紙の表面との間の隙間の距離を、製品の衝撃耐久仕様に応じて設定することにより、製品の衝撃耐久仕様以上の衝撃が携帯端末機器に加わったときに、分銅が感圧紙に接触するようにしたため、携帯端末機器に加わった衝撃が製品の衝撃耐久仕様以上であることを確実、かつ、短時間に検出することができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態を示した通常時の構成分解図である。
【図２】本発明の一実施の形態を示した落下衝撃時の構成断面図である。
【図３】本発明の一実施の形態を示した落下衝撃時の構成断面図である。
【図４】本発明の他の一実施の形態を示した通常時の構成分解図である。
【図５】本発明の他の一実施の形態を示した落下衝撃時の構成断面図である。
【図６】本発明の他の一実施の形態を示した落下衝撃時の構成断面図である。
【符号の説明】
１、１１筐体ケース
１ａ、２ａ、１１ａ、１２ａリブ
２、１２筐体カバー
３、１３プリント基板
４、１４バイブレータ駆動用モータ（バイブモータ）
４ａ分銅
５、１５ゴムホルダ
６、７、１６、１７支持体（感圧紙）
８、１８テープ
９、１０、１９、１９、２０隙間
２１窓レンズ
２２両面テープ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an impact detection structure for a mobile terminal device, and more particularly to an impact detection structure for a mobile terminal device having a vibrator.
[0002]
[Prior art]
When a mobile terminal device is damaged, depending on the damage status of the mobile terminal device, it is difficult to determine whether it is a damage due to an impact such as a drop or an external press, and the cause of the damage is estimated from the damage status of the mobile terminal device. However, since the cause is determined by reproduction evaluation and improvement measures are taken, it takes time until the improvement measures. In addition, since the reproducibility evaluation is only an estimation, the cause of the true damage is unknown, so there is a possibility that appropriate improvement measures cannot be taken.
[0003]
Then, the portable terminal device provided with the impact detection function is known conventionally (for example, refer patent documents 1 and 2). A mobile terminal device described in Patent Literature 1 includes an impact sensor that detects an impact applied to the mobile terminal device, a self-diagnosis circuit that performs a self-diagnosis of the mobile terminal device when an impact is detected by the impact sensor, and a self-diagnosis When an abnormality is recognized by the circuit, it is configured to detect and display an impact from a failure storage memory that stores the failure content and a liquid crystal display that displays the failure content stored in the self-diagnosis memory. .
[0004]
Further, the portable terminal device described in Patent Document 2 is provided with an impact sensor in the device body, and operates when a signal larger than a set value is input from the impact sensor to the control unit, and the display unit of the portable terminal device has an impact. Is provided, and an interrupt controller is provided to act to store the information in a memory.
[0005]
[Patent Document 1]
JP-A-6-169285 (page 3-4, FIGS. 1 and 2)
[Patent Document 2]
JP-A-11-225188 (2nd page, FIG. 1)
[0006]
[Problems to be solved by the invention]
However, each of the portable terminal devices described in Patent Documents 1 and 2 is configured to detect an impact such as a drop by an electric circuit using an impact sensor. When a failure occurs in the electric circuit system including it, the impact cannot be detected, and there is a problem that it is difficult to reliably detect the impact. In addition, since an impact sensor and a memory for impact detection are added, a mounting range thereof is required, and there is a problem that the size of the apparatus is affected.
[0007]
The present invention has been made in view of the above points, and by providing pressure sensitive paper on a casing and a printed circuit board located in a vibrator inside a portable terminal device, the current mounting space is not changed, and an electric circuit is provided. An object of the present invention is to provide an impact detection structure for a mobile terminal device having a structure capable of more reliably discriminating that an impact of a certain level or more has been received in a short time analysis without using the.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a first invention is a portable device in which a vibrator having a cantilever structure including a vibrator driving motor and a weight fixed to a shaft of the vibrator driving motor and rotating is provided inside the casing. An impact detection structure for terminal equipment is provided with pressure sensitive paper whose color changes by contact at least one position around the weight in the casing of the mobile terminal equipment. It is configured to come into contact with the pressure paper.
[0009]
In the present invention, since the pressure sensitive paper is provided in at least one spaced-apart position around the weight of the existing cantilever vibrator inside the portable terminal device, the portable terminal device may be subjected to a certain drop or the like. When there is an impact, the weight position is displaced, and the pressure-sensitive paper color can be changed by contacting the pressure-sensitive paper.
[0010]
In order to achieve the above object, the second invention further includes a transparent window lens installed in a portion of the casing that is spaced from and opposed to the weight, and a transparent adhesive member that bonds the pressure sensitive paper to the window lens. It is characterized by having. In this invention, the change in the color of the pressure sensitive paper adhered to the window lens through the window lens can be visually recognized.
[0011]
In order to achieve the above object, according to a third aspect of the present invention, a vibrator driving motor has an outer peripheral side surface covered with a rubber holder, and utilizes the compressive force of the rubber holder that can be deformed by an impact. It is fixed in the body. In the present invention, when an impact is applied to the mobile terminal device, the rubber holder is deformed, so that the displacement amount of the weight holding portion when the impact is applied can be increased.
[0012]
In order to achieve the above object, according to a fourth aspect of the present invention, a pressure sensitive paper has a laminated structure of a first pressure sensitive paper having a developer layer and a second pressure sensitive paper having a color developer layer. The pressure sensitive paper is fixed so as to be opposed to the weight. In the present invention, when a force is applied to the second pressure-sensitive paper through the first pressure-sensitive paper, the color of the first pressure-sensitive paper can be changed to the color of the color former of the second pressure-sensitive paper.
[0013]
In order to achieve the above object, the fifth invention is characterized in that the pressure sensitive paper is provided at two positions facing each other facing the weight. In the present invention, even if the weight has a semicircular cross-sectional shape, the color of one of the pressure-sensitive papers can be changed when there is an impact.
[0014]
Furthermore, in order to achieve the above object, the sixth invention is characterized in that the distance of the gap between the weight and the surface of the pressure sensitive paper is set according to the impact durability specification of the product. In the present invention, when an impact exceeding the impact durability specification of the product is applied to the mobile terminal device, the weight can be brought into contact with the pressure sensitive paper.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a normal configuration of a first embodiment of an impact detection structure for a portable terminal device according to the present invention. In the figure, a housing case 1 is provided with a rib 1a for holding a printed circuit board 3 therein. The housing cover 2 is provided with ribs 2a for holding the printed circuit board 3 therein. The housing cover 2 is provided with a vibrator motor holding portion 2b for press-fitting and fixing a vibrator driving motor (hereinafter referred to as a vibrator motor) 4 therein.
[0016]
The vibrator motor 4 is a DC motor in which the center of a semicircular or fan-shaped weight 4a having a semi-circular cross section or a fan-like shape is fixed to the shaft of the vibrator motor 4 and constitutes a vibrator together with the weight 4a. This is a known vibrator driving motor that is used to vibrate and notify incoming calls. The outer periphery of the vibrator motor 4 is covered with a rubber holder 5. The vibrator motor 4 is sandwiched and fixed between the housing cover 2 and the printed board 3 by the compression force of the rubber holder 5.
[0017]
On the housing cover wall between the weight 4a of the cantilever structure of the vibrator motor 4 and the housing cover 2, there is a support (pressure-sensitive paper) 6a having a color developing agent layer that is two times smaller than the tape 8a and one turn around the tape 8a. A support (pressure sensitive paper) 7a having a small developer layer is laminated in the order of a tape 8a, a support (pressure sensitive paper) 6a having a color developer layer, and a support (pressure sensitive paper) 7a having a developer layer, It is affixed. A gap 9 is formed between the support (pressure-sensitive paper) 7a having the uppermost developer layer and the outer peripheral surface of the weight 4a.
[0018]
Similarly, on the printed circuit board 3 between the weight 4a of the cantilever structure of the vibrator motor 4 and the printed circuit board 3, the support (pressure-sensitive paper) 6b having a color developing agent layer that is two times smaller than the tape 8b and the tape 8b. A support (pressure-sensitive paper) 7b having a slightly smaller developer layer is laminated in the order of a tape 8b, a support (pressure-sensitive paper) 6b having a color developer layer, and a support (pressure-sensitive paper) 7b having a developer layer. And affixed. A gap 10 is formed between the support (pressure-sensitive paper) 7b having the uppermost developer layer and the outer peripheral surface of the weight 4a.
[0019]
Here, a laminated structure comprising the tapes 8a and 8b, supports (pressure-sensitive paper) 6a and 6b having a color developer layer, and supports (pressure-sensitive paper) 7a and 7b having a developer layer is referred to as a vibrator motor 4. The reason why the two weights 4a of the cantilever structure are opposite to each other is because the cross-sectional shape of the weight 4a of the cantilever structure of the vibrator motor 4 is often formed in a semicircular shape. Further, by adjusting the distance between the gaps 9 and 10, it is possible to determine that an impact outside the impact durability specification of the product has been received. That is, the gaps 9 and 10 are set at a distance according to the impact durability specification of the product.
[0020]
Next, the structure will be described when an impact such as dropping is applied to the mobile terminal device of FIG. FIG. 2 is a sectional view showing the structure of the first embodiment of the impact detection structure of the portable terminal device according to the present invention after the impact is applied. In the figure, the same components as those in FIG. When the portable terminal device having the structure shown in FIG. 1 receives an impact such as dropping, the weight 4a of the cantilever structure of the vibrator motor 4 is inclined toward the printed circuit board 3 due to the deformation of the rubber holder 5, or the printed circuit board 3 is deformed. The gap 10 is narrowed.
[0021]
The larger the impact is, the narrower the gap 10 becomes. When an impact of a certain level or more as defined in the impact durability specification of the product is applied, the weight 4a of the cantilever structure of the vibrator motor 4 and the print are shown as I in FIG. A support (pressure-sensitive paper) 7b having a color developer layer is brought into contact with a support (pressure-sensitive paper) 7b having a developer layer affixed on the substrate 3, and the support (pressure-sensitive paper) 7b having a developer layer. Since 6b is pressed, the color former of the support (pressure sensitive paper) 6b having the color former layer adheres to the support (pressure sensitive paper) 7b having the developer layer. When the impact application operation converges, the mobile terminal device returns to the state shown in FIG. Therefore, by detecting that the color former of the support (pressure-sensitive paper) 6b having the color developer layer adhered to the support (pressure-sensitive paper) 7b having the developer layer, an impact of a certain level or more was applied. I understand that.
[0022]
FIG. 3 shows a cross-sectional view of another example of the impact detection structure of the portable terminal device according to the present invention after applying the impact according to the first embodiment. In the figure, the same components as those in FIG. When the mobile terminal device having the structure of FIG. 1 receives an impact such as a drop, the weight 4a of the cantilever structure of the vibrator motor 4 is deformed by the deformation of the rubber holder 5 depending on the direction in which the impact is applied. Or the housing cover 2 is deformed, and the gap 9 is narrowed.
[0023]
The larger the impact, the narrower the gap 9 becomes. When an impact of a certain level or more determined by the impact durability specification of the product is applied, as shown by II in FIG. A support (pressure sensitive paper) 7a having a developer layer affixed to the wall of the housing cover 2 comes into contact with the support (pressure sensitive paper) 7a having a color developer layer through the support (pressure sensitive paper) 7a having a developer layer (sensitivity). Since the pressure paper 6a is pressed, the color former of the support (pressure sensitive paper) 6a having the color developer layer adheres to the support (pressure sensitive paper) 7a having the developer layer.
[0024]
When the impact application operation converges, the mobile terminal device returns to the state shown in FIG. Therefore, a certain level of impact was applied by detecting that the color former of the support (pressure-sensitive paper) 6a having the color developer layer adhered to the support (pressure-sensitive paper) 7a having the developer layer. I understand that.
[0025]
As described above, according to the present embodiment, the tape 8a (8b), the support (pressure-sensitive paper) 6a (6b) having the color developer layer, and the developer layer in the space originally present in the housing. The laminated structure of the supporting body (pressure sensitive paper) 7a (7b) is provided, and the weight 4a of the existing vibrator motor 4 is used so that when a certain impact or more is applied, the weight 4a comes into contact with the laminated structure. Since the color of the support (pressure-sensitive paper) 7a or 7b having the developer layer is changed to the color of the color developer of the support (pressure-sensitive paper) 6a or 6b having the color developer layer, the current mounting space It is possible to determine that an impact of a certain level or more has been received more reliably in a short time analysis without changing the above and without using an electric circuit.
[0026]
Next, a second embodiment of the present invention will be described. FIG. 4 is a sectional view showing a normal configuration of a second embodiment of the impact detection structure for a portable terminal device according to the present invention. In the figure, a housing case 11 is provided with a rib 11a for holding a printed circuit board 13 therein. The housing cover 12 is provided with ribs 12a for holding the printed circuit board 13 therein. The housing cover 12 is provided with a vibrator motor holding portion 12b for press-fitting the vibrator motor 14 therein.
[0027]
The vibrator motor 14 is a known vibrator driving motor having a structure similar to that of the vibrator motor 4, in which a central portion of a semicircular or fan-shaped weight 14 a is penetrated and fixed to the shaft. A rubber holder 15 is attached to the outer periphery of the vibrator motor 14, and the vibrator motor 14 is sandwiched and fixed between the housing cover 12 and the printed circuit board 13 by the compressive force of the rubber holder 15.
[0028]
A transparent window lens 21 is installed in a portion of the housing cover 12 that faces the weight 14 a of the cantilever structure of the vibrator motor 14. The window lens 21 is enclosed by one surface of the transparent double-sided tape 22. The body cover 12 is affixed and fixed. The other surface of the double-sided tape 22 is affixed to the tape 18a.
[0029]
Further, on the tape 18a, a support (pressure-sensitive paper) 16a having a color developer layer that is two times smaller than the tape 18a and a support (pressure-sensitive paper) 17a having a developer layer that is slightly smaller than the tape 18a are provided. A support (pressure-sensitive paper) is laminated in the order of a tape 18a, a support (pressure-sensitive paper) 16a having a color developer layer, and a support (pressure-sensitive paper) 17a having a developer layer. ) A gap 19 is formed between 17a and the outer peripheral surface of the weight 14a.
[0030]
On the other hand, on the printed circuit board 13 between the weight 14a of the cantilever structure of the vibrator motor 14 and the printed circuit board 13, there is a support (pressure-sensitive paper) 16b having a color developing agent layer that is about two times smaller than the tape 18b and the tape 18b. A support (pressure sensitive paper) 17b having a small developer layer is laminated in the order of a tape 18b, a support (pressure sensitive paper) 16b having a color former layer, and a support (pressure sensitive paper) 17b having a developer layer. Affixed. A gap 20 is formed between the support (pressure-sensitive paper) 17b having the uppermost developer layer and the outer peripheral surface of the weight 14a.
[0031]
Here, as in the first embodiment, the tapes 18a and 18b, supports (pressure-sensitive paper) 16a and 16b having a color developer layer, supports (pressure-sensitive paper) 17a and 17b having a developer layer, The reason why the laminated structure consisting of the two is opposed to the weight 14a of the cantilever structure of the vibrator motor 14 is that the cross-sectional shape of the weight 14a of the cantilever structure of the vibrator motor 14 is often formed in a semicircular shape. However, it suffices if there is at least one place around the weight 14a of the cantilever structure of the vibrator motor 14. Further, the gaps 19 and 20 are set at a distance according to the impact durability specification of the product.
[0032]
Next, the structure will be described when an impact such as dropping is applied to the mobile terminal device of FIG. FIG. 5 shows a sectional view of the second embodiment of the impact detection structure of the portable terminal device according to the present invention after the impact is applied. In the figure, the same components as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted. When the mobile terminal device having the structure shown in FIG. 4 receives an impact such as dropping, the weight 14a of the cantilever structure of the vibrator motor 14 is inclined toward the printed circuit board 13 due to the deformation of the rubber holder 15, or the printed circuit board 13 is deformed and the gap 20 becomes narrower.
[0033]
The larger the impact, the narrower the gap 20 becomes. When an impact such as a certain drop or more as defined in the impact durability specification of the product is applied, the weight of the cantilever structure of the vibrator motor 14 is applied as shown by III in FIG. 14a and a support (pressure-sensitive paper) 17b having a developer layer affixed on the printed circuit board 13 are in contact with each other, and a support having a color-developing layer through the support (pressure-sensitive paper) 17b having a developer layer ( Since the pressure-sensitive paper (16b) is pressed, the color former of the support (pressure-sensitive paper) 16b having the color developer layer adheres to the support (pressure-sensitive paper) 17b having the developer layer. When the impact application operation converges, the mobile terminal device returns to the state shown in FIG. Therefore, by detecting that the color former of the support (pressure-sensitive paper) 16b having the color developer layer is attached to the support (pressure-sensitive paper) 17b having the developer layer, it is outside the impact durability specification of the product. I can see that I was shocked.
[0034]
FIG. 6 shows a sectional view of another example of the second embodiment of the impact detection structure for a portable terminal device according to the present invention after the impact is applied. In the figure, the same components as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted. When the mobile terminal device having the structure of FIG. 4 receives an impact such as a drop, the weight 14a of the cantilever structure of the vibrator motor 14 is deformed by the deformation of the rubber holder 15 depending on the direction in which the impact is applied. Or the housing cover 12 is deformed, and the gap 19 is narrowed.
[0035]
The larger the impact, such as a drop, the narrower the gap 19 becomes. When a certain level of drop impact is applied as defined by the impact durability specification of the product, the cantilever structure of the vibrator motor 14 is applied as shown by IV in FIG. The weight 14a and the support (pressure sensitive paper) 17a having the developer layer are in contact with each other, and the support (pressure sensitive paper) 16a having the color developer layer is pressed through the support (pressure sensitive paper) 17a having the developer layer. Therefore, the color former of the support (pressure-sensitive paper) 16a having the color former layer adheres to the support (pressure-sensitive paper) 17a having the developer layer.
[0036]
When the impact application operation converges, the mobile terminal device returns to the state shown in FIG. At this time, it can be confirmed from the outside of the portable terminal device through the window lens 21 that the color former of the support (pressure sensitive paper) 16a having the color developer layer is attached to the support (pressure sensitive paper) 17a having the developer layer. .
[0037]
As described above, according to the present embodiment, as in the first embodiment, the current mounting space is not changed, and an electric circuit is not used. In the present embodiment, the color of the support (pressure-sensitive paper) 16a having the color former layer can be determined through the window lens 21 and the double-sided tape 22 in the case of the portable terminal device. The color of the support (pressure-sensitive paper) 16a having a color developer layer has been changed to the color of the support (pressure-sensitive paper) 17a having a developer layer. When it can be visually confirmed, it can be confirmed that a certain level of impact has been applied.
[0038]
The present invention is not limited to the above embodiment. For example, the tapes 8a and 8b in FIG. 1, supports (pressure-sensitive papers) 6a and 6b having a color developer layer, and supports having a developer layer. (Pressure sensitive paper) 7a and 7b are laminated in this order as long as at least one is provided around the weight 4a of the cantilever structure of the vibrator motor 4. Also, a support (pressure-sensitive paper) in which the support (pressure-sensitive paper) 6a and 6b having a color former layer and the support (pressure-sensitive paper) 7a and 7b having a developer layer are composed of one part is used. May be. Similarly, a support (pressure-sensitive paper) having a color developer layer (pressure-sensitive paper) 16a and 16b and a support (pressure-sensitive paper) 17a and 17b having a developer layer made of one component is used. May be.
[0039]
Further, the window lens 21 and the housing cover 12 shown in FIG. 4 may be fixed with an adhesive, press-fitted, or the like. The color of the supports (pressure-sensitive paper) 16 a and 16 b having the color former layer may be any color as long as the support (pressure-sensitive paper) 17 a having the developer layer inside can be confirmed through the window lens 21.
[0040]
【The invention's effect】
As described above, the present invention has the following various features.
[0041]
(1) By providing pressure sensitive paper at at least one spaced-apart position around the weight of an existing cantilever vibrator inside the mobile terminal device, the mobile terminal device is subjected to a certain drop or other impact. In some cases, the position of the weight is displaced and the pressure-sensitive paper changes its color by contacting the pressure-sensitive paper.Therefore, the mounting space of the current mobile terminal device is not changed, and an electric circuit is not used. By analyzing the time, it can be determined by the color of the pressure sensitive paper that the shock has been received more reliably.
[0042]
(2) Since the change in the color of the pressure sensitive paper can be visually recognized through the window lens, it can be confirmed that a certain level of impact is applied to the mobile terminal device without disassembling the housing of the mobile terminal device.
[0043]
(3) When an impact is applied to the mobile terminal device, the rubber holder is deformed to increase the amount of displacement of the holding portion of the weight when the impact is applied, making it easier to detect the impact. it can.
[0044]
(4) When force is applied to the second pressure-sensitive paper having the color developer layer through the first pressure-sensitive paper having the developer layer, the color of the first pressure-sensitive paper is the color of the second pressure-sensitive paper. Since the color is changed to the color of the agent, it is possible to easily confirm from the color of the first pressure-sensitive paper that a certain level of impact has been applied to the mobile terminal device without using an electric circuit.
[0045]
(5) By providing the pressure sensitive paper at two spaced facing positions facing the weight, even if the weight has a semicircular cross section, the color of one of the pressure sensitive papers will change when there is an impact. Since it can be changed, it is possible to reliably detect that an impact has been applied even if the weight has a semicircular cross-sectional shape.
[0046]
(6) By setting the distance of the gap between the weight and the surface of the pressure sensitive paper according to the impact durability specification of the product, when an impact exceeding the impact durability specification of the product is applied to the mobile terminal device, the weight Since the pressure sensor is in contact with the pressure sensitive paper, it is possible to reliably detect in a short time that the impact applied to the portable terminal device is equal to or higher than the impact durability specification of the product.
[Brief description of the drawings]
FIG. 1 is an exploded view of a normal configuration illustrating an embodiment of the present invention.
FIG. 2 is a structural cross-sectional view at the time of a drop impact showing an embodiment of the present invention.
FIG. 3 is a structural cross-sectional view at the time of a drop impact showing an embodiment of the present invention.
FIG. 4 is an exploded configuration diagram in a normal state showing another embodiment of the present invention.
FIG. 5 is a structural cross-sectional view at the time of a drop impact showing another embodiment of the present invention.
FIG. 6 is a cross-sectional view showing a configuration at the time of a drop impact according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 11 Case case 1a, 2a, 11a, 12a Rib 2, 12 Case cover 3, 13 Printed circuit board 4, 14 Vibrator drive motor (vibration motor)
4a Weight 5, 15 Rubber holder 6, 7, 16, 17 Support (pressure-sensitive paper)
8, 18 Tape 9, 10, 19, 19, 20 Clearance 21 Window lens 22 Double-sided tape

Claims

A shock detection structure for a mobile terminal device in which a vibrator having a cantilever structure including a vibrator driving motor and a weight fixed to a shaft of the vibrator driving motor and rotating is provided inside the housing,
Pressure sensitive paper whose color changes by contact is provided at at least one position in the casing of the portable terminal device that is spaced apart from the weight so that the weight comes into contact with the pressure sensitive paper by a certain impact or more. An impact detection structure for a portable terminal device, characterized in that it is configured.

2. The mobile phone according to claim 1, further comprising: a transparent window lens installed at a portion of the casing that is spaced apart from the weight and a transparent adhesive member that adheres the pressure sensitive paper to the window lens. Shock detection structure for terminal equipment.

The vibrator driving motor has an outer peripheral side surface covered with a rubber holder, and is fixed in a casing of the portable terminal device using a compressive force of the rubber holder that can be deformed by an impact. 3. An impact detection structure for a portable terminal device according to 1 or 2.

The pressure-sensitive paper has a laminated structure of a first pressure-sensitive paper having a developer layer and a second pressure-sensitive paper having a color former layer, and the first pressure-sensitive paper is separated from and opposed to the weight. The impact detection structure for a mobile terminal device according to any one of claims 1 to 3, wherein the impact detection structure is fixed.

The impact detection structure for a mobile terminal device according to any one of claims 1 to 4, wherein the pressure sensitive paper is provided at two positions facing and opposite to the weight.

The impact detection structure for a mobile terminal device according to claim 1 or 2, wherein a distance of a gap between the weight and the surface of the pressure sensitive paper is set according to an impact durability specification of a product.