JP4226828B2

JP4226828B2 - Hinge device and portable device

Info

Publication number: JP4226828B2
Application number: JP2002044260A
Authority: JP
Inventors: 一吉大嶋; 和征石ケ谷
Original assignee: Sugatsune Kogyo Co Ltd
Current assignee: Sugatsune Kogyo Co Ltd
Priority date: 2002-02-21
Filing date: 2002-02-21
Publication date: 2009-02-18
Anticipated expiration: 2022-02-21
Also published as: JP2003239944A

Description

【０００１】
【発明の属する技術分野】
この発明は、所定の回動位置においてクリック音を発生させることができるヒンジ装置及びそのヒンジ装置が用いられた携帯電話機等の携帯機器に関する。
【０００２】
【従来の技術】
一般に、携帯電話機に用いられるヒンジ装置は、第１、第２ヒンジ部材を有しており、第１、第２ヒンジ部材は、ヒンジ軸を介して互いに回動可能に連結されている。そして、第１、第２ヒンジ部材が携帯電話機の送話部と受話部とにそれぞれ回動不能に連結されることにより、送話部と受話部とがヒンジ装置を介して回動可能に連結されている。
【０００３】
ところで、従来のヒンジ装置においては、第１、第２ヒンジ部材がコイルばね等の付勢手段によって互いに当接させられている。図１１（Ａ）、（Ｂ）は、従来のヒンジ装置における第１、第２ヒンジ部材の各当接面をそれぞれ示すものであり、第１ヒンジ部材１の当接面には、径方向に延びる断面略台形状の三つの凹部１ａ，１ｂ，１ｃが周方向の所定の箇所にそれぞれ配置形成されている。一方、第２ヒンジ部材２の当接面には、二つの凸部２ａ，２ｂが形成されている。二つの凸部２ａ，２ｂは、ヒンジ装置が用いられている携帯電話機の送話部と受話部とを例えば閉位置に回動させると、図１１（Ｃ）に示すように、凹部１ａ，１ｂにそれぞれ嵌まり込む。すると、凹部１ａ，１ｂ及び凸部２ａ，２ｂの傾斜した各側面により、付勢手段の付勢力が第１、第２ヒンジ部材１，２を互いに逆方向へ回動させる回動付勢力に変換される。そして、その回動付勢力により、送話部と受話部とが高速で回動させられて勢いよく衝突する。その結果、クリック音が発生する。一方、送話部と受話部とを通話位置に回動させると、凸部２ａ，２ｂが凹部１ｃ，１ａにそれぞれ嵌り込み、送話部と受話部とが衝突する。それによって、クリック音が発生する（特開平７−１１８３１号公報参照）。
【０００４】
【発明が解決しようとする課題】
上記従来のヒンジ装置においては、送話部及び受話部が閉位置又は通話位置に回動するときに、つまり凸部２ａ，２ｂが凹部１ａ，１ｂ（１ｃ，１ａ）に嵌合するときに、送話部と受話部とを付勢手段の付勢力に抗して低速で回動させると、送話部と受話部とは、単に接触するだけであり、勢いよく突き当たることがない。このため、クリック音が発生しないという問題があった。
【０００５】
本出願人は、上記問題を解消することができるヒンジ装置を先に提案している（特開２００１−１５２７２８号公報参照）。この先の提案に係るヒンジ装置においては、第１ヒンジ部材に可動部材が回動不能に、かつ移動可能に連結されており、この可動部材はコイルばね（付勢手段）によって第２ヒンジ部材に突き当てられている。可動部材と第２ヒンジ部材との各当接面には、凸部と凹部とがそれぞれ形成されている。凸部と凹部とは、送話部と受話部とが閉位置又は通話位置に回動すると、互いに嵌まり合ってコイルばねの付勢力を回動付勢力に変換する。また、第２ヒンジ部材と受話部とには、互いに嵌まり合う当接凸部と当接凹部とが形成されている。この当接凸部と当接凹部とが嵌まり合うことにより、第２ヒンジ部材が受話部に追随して回動するようになっている。ただし、当接凹部の周方向の幅は、当接凸部の周方向の幅より若干広くなっている。したがって、第２ヒンジ部材は、受話部に対し当接凹部と当接凸部との周方向における幅の差に相当する微小角度だけ相対回動可能になっている。
【０００６】
このような構造を有するヒンジ装置では、受話部が閉位置又は通話位置に回動して凸部が凹部に嵌まり込むと、付勢手段の付勢力により第２ヒンジ部材が受話部に対し上記微小角度の分だけ回動させられる。この場合、第２ヒンジ部材は、送話部と受話部との回動速度に拘わらず、受話部に対して高速回動させられる。したがって、送話部と受話部とを低速で回動させたとしても、当接凸部と当接凹部との周方向の側面どうしは高速で衝突する。よって、クリック音が確実に発生する。
【０００７】
しかし、先の提案に係るヒンジ装置においては、クリック音を発生させるための当接凹部と当接凸部との一方がヒンジ部材に設けられ、他方が受話部に設けられているため、実際にクリック音が発生するか否かは、ヒンジ装置を携帯電話機に組み込んでみなければ分からず、クリック音が発生しなかったり、クリック音が発生したとしても、小さいクリック音しか発生しないという問題があった。
【０００８】
【課題を解決するための手段】
この発明は、上記の問題を解決するためになされたものであり、ヒンジ装置自体でクリック音を発生させることができるヒンジ装置を提供することを目的としている。そのような目的を達成するために、第１の発明は、互いに回動可能に連結された第１及び第２ヒンジ部材と、この第１及び第２ヒンジ部材間にそれらの回動軸線を中心として回動可能に配置された打撃部材と、上記第１ヒンジ部材が上記第２ヒンジ部材に対し所定の第１回動位置まで一方向へ回動したときに、上記打撃部材を上記一方向へ回動付勢する第１回動付勢手段とを備え、上記第１ヒンジ部材及び上記打撃部材には、上記第１ヒンジ部材が上記一方向へ回動したときに互いに当接して上記打撃部材を上記第１ヒンジ部材と共に他方向へ回動させる第１、第２当接部が設けられるとともに、上記第１ヒンジ部材が上記第１回動位置に達して上記打撃部材が上記第１回動付勢手段によって上記一方向へ回動させられたときに互いに当接する第１、第２打撃部が設けられていることを特徴としている。
この場合、上記打撃部材がその回動軸線方向へ移動可能とされており、上記第１回動付勢手段が、上記打撃部材を上記第１ヒンジ部材側から上記第２ヒンジ部材側へ付勢して上記第２ヒンジ部材に当接させる付勢部材と、上記第２ヒンジ部材と上記打撃部材との当接面にそれぞれ形成され、上記第１ヒンジ部材が上記第１回動位置に達したときに、上記付勢手段の付勢力を、上記打撃部材を上記一方向へ回動付勢する回動付勢力に変換する第１、第２カム部とを有していることが望ましい。
上記第１ヒンジ部材が上記第２ヒンジ部材に対して所定の第２回動位置まで他方向へ回動したときに、上記打撃部材を上記他方向へ回動付勢する第２回動付勢手段をさらに備え、上記第１ヒンジ部材及び上記打撃部材には、上記第１ヒンジ部材が上記他方向へ回動したときに互いに当接して上記打撃部材を上記第１ヒンジ部材と共に他方向へ回動させる第３、第４当接部が設けられるとともに、上記第１ヒンジ部材が上記第２回動位置に達して上記打撃部材が上記第２回動付勢手段によって上記他方向へ回動させられたときに互いに当接する第第３、第４打撃部が設けられていることが望ましい。
上記第１ヒンジ部材と上記打撃部材とのいずれか一方には、当接凹部が形成され、他方には周方向の幅が上記当接凹部の周方向の幅より狭く、上記当接凹部に周方向における幅の差の分だけ周方向へ相対移動可能に嵌まり込むことにより、同幅の差の分だけ上記第１ヒンジ部材と上記打撃部材との間の回動を許容する当接凸部が形成され、上記当接凹部の周方向における一側面が上記第１当接部及び上記第３打撃部とされ、上記当接凸部の周方向における一側面が上記第２当接部及び第４打撃部とされ、上記当接凹部の周方向における他側面が上記第３当接部及び上記第１打撃部とされ、上記当接凸部の周方向における他側面が上記第４当接部及び上記第２打撃部とされていることが望ましい。
上記打撃部材がその回動軸線方向へ移動可能とされており、上記第１回動付勢手段が、上記打撃部材を上記第１ヒンジ部材側から上記第２ヒンジ部材側へ付勢して上記第２ヒンジ部材に当接させる付勢部材と、上記第２ヒンジ部材と上記打撃部材との当接面にそれぞれ形成され、上記第１ヒンジ部材が上記第１回動位置に達したときに、上記付勢部材の付勢力を、上記打撃部材を上記一方向へ回動付勢する回動付勢力に変換する第１、第２カム部とを有し、上記第２回動付勢手段が、上記付勢手段と、上記第２ヒンジ部材と上記打撃部材との当接面にそれぞれ形成され、上記第１ヒンジ部材が上記第２回動位置に達したときに、上記付勢部材の付勢力を、上記打撃部材を上記他方向へ回動付勢する回動付勢力に変換する第３、第４カム部とを有していることが望ましい。
上記第２ヒンジ部材と上記打撃部材との当接面の一方には、一対の凸部が周方向に１８０°離れて設けられ、他方には一対の凹部が周方向に１８０°離れて設けられ、上記凸部の周方向における一側部と他側部とがそれぞれ上記第１、第３カム部とされ、上記凹部の周方向おける一側部と他側部とがそれぞれ上記第２、第４カム部とされていることが望ましい。
上記凸部が上記第２ヒンジ部材に凸球面状に形成されていることが望ましい。上記凸部が上記第２ヒンジ部材と別体に形成された球体の一部によって構成されていることが望ましい。
上記第２ヒンジ部材が樹脂によって構成され、上記球体及び上記打撃部材が上記第２ヒンジ部材を構成する樹脂より硬度の高い材質によって構成されていることが望ましい。
上記第１ヒンジ部材が、上記第２ヒンジ部材側と逆側の一端部に底部を有し、他端部が開口した筒体として形成され、この第１ヒンジ部材の内部に、上記付勢部材と上記打撃部材とが底部側から順次挿入され、上記第１ヒンジ部材の内周面と上記打撃部材の外周面との一方に上記当接凹部が形成され、他方に上記当接凸部が形成されていることが望ましい。
また、第２の発明は、第１、第２機器本体がヒンジ装置を介して回動可能に連結されてなる携帯機器において、上記ヒンジ装置として請求項１〜１０のいずれかに記載のヒンジ装置が用いられ、上記第１、第２機器本体に上記ヒンジ装置の第１、第２ヒンジ部材がそれぞれ回動不能に連結されていることを特徴としている。
【０００９】
【発明の実施の形態】
以下、この発明の一実施の形態について図１〜図１０を参照して説明する。
図１〜図３は、この発明に係る携帯電話機（携帯機器）Ａを示すものであり、携帯電話機Ａは、送話部（第１機器本体）Ｂと受話部（第２機器本体）Ｃとを備えている。送話部Ｂの受話部Ｃ側の端部における左右両側部には、連結筒部Ｂ１，Ｂ１が形成され、中央部にはケーブル挿通部Ｂ２が形成されている。受話部Ｃの送話部Ｂ側の端部には、連結筒部Ｃ１，Ｃ１が形成されている。各連結筒部Ｃ１は、連結筒部Ｂ１とケーブル挿通部Ｂ２との間に挿入されている。そして、図４に示すように、隣接する連結筒部Ｂ１，Ｃ１がこの発明に係るヒンジ装置１０によりその軸線（＝連結筒部Ｂ１，Ｃ１の軸線）を中心として回動可能に連結されている。これにより、送話部Ｂと受話部Ｃとが、ヒンジ装置１０を介して回動可能に連結されている。送話部Ｂと受話部Ｃとの回動範囲は、それらの前面Ｂｆ，Ｃｆどうしが互いに突き当たった図２に示す閉位置と、前面Ｂｆ，Ｃｆどうしのなす角度が約１６０°である図３に示す通話位置との間に制限されている。なお、ケーブル挿通部Ｂ２には、送話部Ｂと受話部Ｃとを電気的に接続するケーブル（図示せず）が挿通されている。
【００１０】
携帯電話機Ａに用いられるヒンジ装置１０は、図４〜図８に示すように、第１ヒンジ部材２０、第２ヒンジ部材３０、ヒンジ軸４０、打撃部材５０及びコイルばね（付勢手段）６０を備えている。
【００１１】
第１ヒンジ部材２０は、比較的硬質の樹脂又は金属からなるものであり、円筒部２１と、この円筒部２１の一端部にこれと一体に形成された底部２２とを有している。図９に示すように、円筒部２１の内周面には、一対の幅広当接凹部（当接凹部）２３，２３が周方向に１８０°離れて形成されるとともに、一対の幅狭当接凹部（当接凹部）２４，２４が周方向に１８０°離れ、かつ幅広当接凹部２３に対して周方向に９０°離れて形成されている。幅狭当接凹部２４の周方向の幅は、幅広当接凹部２３の幅より若干狭くなっているが、同一幅にしてもよい。また、一対の幅広当接凹部２３，２３と一対の幅狭当接凹部２４，２４とのいずれか一方の一対だけを形成してもよい。幅広当接凹部２３及び幅狭当接凹部２４は、第１ヒンジ部材２０の全長にわたって延びている。底部２２の中央部には、これを貫通する貫通孔２２ａが形成されている。
【００１２】
第２ヒンジ部材３０は、比較的硬質の樹脂を成形してなるものであり、図４〜図８に示すように、中実の円柱状をなす基部３１と、この基部３１の一端面にこれと一体に形成された円筒状をなす連結固定部３２とを有している。基部３１と連結固定部３２とは、互いの軸線を一致させて形成されている。基部３１の中央部には、その軸線上を一端面から他端面まで貫通する挿通孔３１ａが形成されている。この挿通孔３１ａの連結固定部３２側の開口部には、テーパ孔部３１ｂが形成されている。一方、連結固定部３２の先端部には、環状突出部３２ａが形成されている。この環状突出部３２ａの基端側（基部３１側）の端面３２ｂは、第２ヒンジ部材３０の軸線と直交する平面になっている。環状突出部３２ａの外周面の先端部には、先端側から基端側へ向かうにしたがって大径になるテーパ部３２ｃが形成されている。このテーパ部３２ｃの小径側端部の外径は、環状突出部３２ａを除く連結固定部３２の外径より若干小径になっている。また、連結固定部３２には、その軸線上を横断するとともに、その先端から基端まで延びるスリット３２ｄが形成されている。このスリット３２ｄが形成されることにより、環状突出部３２ａが拡縮径可能になっている。
【００１３】
第１ヒンジ部材２０と第２ヒンジ部材３０とは、互いの軸線を一致させ、かつ筒部２１の開口側端部と基部３１の連結固定部３２側と逆側の端部とを対向させた状態で配置されている。そして、第１ヒンジ部材２０と第２ヒンジ部材３０とは、ヒンジ軸４０により回動可能に連結されている。
【００１４】
図４、図５、図７及び図８に示すように、ヒンジ軸４０は、互いの軸線を一致させて一端側から他端側へ向かって順次形成された頭部４１、大径部４２、中径部４３、小径部４４及び加締め部４５を有している。頭部４１、大径部４２、中径部４３、小径部４４及び加締め部４５は、いずれも断面円形に形成されており、その順に小径になっている。ヒンジ軸４０の頭部４１は、第１ヒンジ部材２０の底部２２の外側の端面に突き当たっており、大径部４２は貫通孔２２ａを第１ヒンジ部材２０の開口部側へ向かって回動可能に貫通している。ヒンジ軸４０の小径部４４は、第２ヒンジ部材３０の挿通孔３１ａの内径とほぼ同一の外径を有しており、挿通孔３１ａに回動可能に挿入されている。加締め部４５の先端部は、挿通孔３１ａから突出しており、その突出した先端部がテーパ孔部３１ｂに対応した形状に加締められることにより、環状部４６（図５参照）が形成されている。この環状部４６と中径部４３の先端面４３ａとによって第２ヒンジ部材３０の基部３１が挟持されている。これにより、第２ヒンジ部材３０がヒンジ軸４０に位置固定されている。その結果、第１ヒンジ部材２０が頭部４１と第２ヒンジ部材３０とによってヒンジ軸４０から抜け止めされ、第１、第２ヒンジ部材２０，３０がヒンジ軸４０を介して回動可能に連結されている。なお、頭部４１の大径部４２側の端面から中径部４３の先端面４３ａまでの長さは、第１ヒンジ部材２０の全長より僅かに長くなっており、その差の分だけ第１ヒンジ部材２０と第２ヒンジ部材３０との間には若干の隙間が形成されている。
【００１５】
図４に示すように、第１ヒンジ部材２０は、その先端部を除く部分が送話部Ｂの連結筒部Ｂ１に回動不能に嵌合されており、先端部が受話部Ｃの連結筒部Ｃ１に回動可能に嵌合されている。これにより、送話部Ｂと受話部Ｃとが回動可能に連結されている。しかも、第１ヒンジ部材２０は、送話部Ｂと一体に回動するようになっている。一方、第２ヒンジ部材３０の基部３１は、受話部Ｃの連結筒部Ｃ１に回動不能に嵌合されている。したがって、第２ヒンジ部材３０は、受話部Ｃと一体に回動する。このように、第１、第２ヒンジ部材２０，３０が送話部Ｂ及び受話部Ｃとそれぞれ一体に回動するので、以下においては送話部Ｂ及び受話部Ｃが閉位置に回動したときの第１、第２ヒンジ部材２０，３０の回動位置も閉位置と称し、送話部Ｂ及び受話部Ｃが通話位置に回動したときの第１、第２ヒンジ部材２０，３０の回動位置も通話位置と称する。
【００１６】
図４及び図５に示すように、第１ヒンジ部材２０の筒部２１には、その底部２２側から開口部側へ向かってコイルばね６０及び打撃部材５０が順次挿入されている。コイルばね６０は、その一端が底部２２に突き当たり、他端が打撃部材５０に突き当たることにより、打撃部材５０を第１ヒンジ部材２０側から第２ヒンジ部材３０側へ向かって付勢している。
【００１７】
打撃部材５０は、第２ヒンジ部材３０を構成する樹脂より硬度の高い材質、例えば鋼等の金属、セラミック等からなるものであり、図７〜図９に示すように、外径が第１ヒンジ部材２０の円筒部２１の内径より若干小径である円板状の本体部５１を有している。この本体部５１の中央部には、貫通孔５１ａが形成されており、この貫通孔５１ａには、ヒンジ軸４０の中径部４３が回動可能に、かつ軸線方向へ移動可能に挿通されている。本体部５１の外周面には、一対の幅広当接凸部（当接凸部）５２，５２と、一対の幅狭当接凸部（当接凸部）５３，５３とが一体に形成されている。一対の幅広当接凸部５２，５２は、本体部５１の周方向に１８０°離れて配置されている。一対の幅狭当接凸部５３，５３は、本体部５１の周方向に１８０°離れ、かつ幅広当接凸部５２に対して９０°離れて配置されている。
【００１８】
幅広当接凸部５２と幅狭当接凸部５３とは、第１ヒンジ部材２０の幅広当接凹部２３と幅狭当接凹部２４とにそれぞれ回動可能に、かつ第１ヒンジ部材２０の軸線方向へ移動可能に嵌合している。ここで、幅広当接凸部５２及び幅狭当接凸部５３の周方向の幅は、幅広当接凹部２３及び幅狭当接凹部２４の周方向の幅よりそれぞれ狭くなっており、幅広当接凸部５２と幅広当接凹部２３との幅の差と、幅狭当接凸部５３と幅狭当接凹部２４との幅の差とは、等しくなっている。したがって、それらの幅の差をΔＷとすると、打撃部材５０は、第１ヒンジ部材２０に対して幅の差ΔＷに相当する角度分だけ回動可能である。よって、第１ヒンジ部材２０が第２ヒンジ部材３０に対して相対的に図９の矢印Ａ方向（通話位置側から閉位置側へ向かう方向。以下、閉方向という。）又は矢印Ｂ方向（閉位置側から通話位置側へ向かう方向。以下、開方向という。）へ回動すると、打撃部材５０は、最大でもΔＷの分だけ第１ヒンジ部材２０に対してその回動方向と逆方向へ相対的に回動した後、幅広当接凸部５２の側面５２ａ（５２ｂ）に幅広当接凹部２３の側面２３ａ（２３ｂ）が突き当たるとともに、幅狭当接凸部５３の側面５３ａ（５３ｂ）に幅狭当接凹部２４の側面２４ａ（２４ｂ）が突き当たることにより、第１ヒンジ部材２０と一緒に回動することになる。これから明かなように、この実施の形態では、幅広当接凹部２３及び幅狭当接凹部２４の一側面２３ａ，２４ａが第１当接部に、幅広当接凸部５２及び幅狭当接凸部５３の一側面５２ａ，５３ａが第２当接部に、幅広当接凹部２３及び幅狭当接凹部２４の他側面２３ｂ，２４ｂが第３当接部に、幅広当接凸部５２及び幅狭当接凸部５３の他側面５２ｂ，５３ｂが第４当接部になっている。
なお、幅広当接凸部５２及び幅狭当接凸部５３については、幅広当接凹部２３と幅狭当接凹部２４とのいずれか一方だけが形成される場合には、対応する一方だけが形成される。
【００１９】
図５に示すように、第２ヒンジ部材３０の基部３１の打撃部材５０との対向面には、一対の支持凹部３１ｃ，３１ｃが第２ヒンジ部材３０の軸線を中心として周方向へ１８０°離れて配置形成されている。支持凹部３１ｃ，３１ｃには、球体（凸部）７１，７２がそれぞれの一部を打撃部材５０側に突出させた状態で嵌合固定されている。球体７１，７２は、第２ヒンジ部材３０を構成する樹脂より硬度の高い材質、例えば、鋼等の金属又はセラミック等によって構成されている。球体７１，７２は、例えばインサート成形法により第２ヒンジ部材３０を成形すると同時に第２ヒンジ部材３０に固定することができる。すなわち、第２ヒンジ部材３０を成形する際には、それを成形するための金型（図示せず）内の所定の箇所に球体７１，７２を予めセットしておく。そして、金型内に溶融樹脂を充填する。これにより、第２ヒンジ部材３０を成形すると同時に球体７１，７２を第２ヒンジ部材３０に固定することができる。
【００２０】
図４、図５、図８及び図９に示すように、打撃部材５０の第２ヒンジ部材３０との対向面には、軸線をヒンジ装置１０の軸線（＝第１、第２ヒンジ部材２０，３０及び打撃部材５０の各軸線）と平行にした一対の凹部５４，５５が形成されている。この一対の凹部５４，５５は、同一形状、同一寸法を有しており、底部側に形成された断面円形のストレート孔部５４ａ,55aと、開口部側に形成され、底部側から開口部側へ向かうにしたがって拡径する拡径部５４ｂ，５５ｂとから構成されている。拡径部５４ｂ，５５ｂは、外側に膨出する凸曲面によって形成され、一端がストレート孔部５４ａ，５５ａの内周面に滑らかに接し、他端が打撃部材５０の第２ヒンジ部材３０との対向面に滑らかに接している。拡径部５４ｂ，５５ｂの最大径（打撃部材５０の第２ヒンジ部材３０との対向面における拡径部５４ｂ，５５ｂの直径）は、球体７１，７２の外径より大径に設定され、拡径部５４ｂ，５５ｂの最小径（＝ストレート孔部５４ａの内径）は球体７１，７２の外径より小径に設定されている。拡径部５４ｂ，５５ｂは、凹曲面によって形成してもよく、あるいは母線がストレートな線であるテーパ面によって形成してもよい。
【００２１】
一対の凹部５４，５５は、打撃部材５０の軸線（＝第１、第２ヒンジ部材２０，３０の軸線）を中心とする円周上に周方向へ１８０°離れて配置されている。一対の凹部５４，５５が配置された円周は、一対の球体７１，７２が配置された円周と同一の直径を有している。したがって、第１、第２ヒンジ部材２０，３０が所定の回動位置に回動すると、球体７１，７２が凹部５４，５５を区画する底面に接触する。ここで、所定の回動位置とは、閉位置と通話位置とであり、第１、第２ヒンジ部材２０，３０が閉位置に位置すると、球体７１，７２は、図９において実線で示すように、拡径部５４ｂ，５５ｂにそれぞれ接触し、第１、第２ヒンジ部材２０，３０が通話位置に位置すると、球体７１，７２は、図９において想像線で示すように、拡径部５５ｂ，５４ｂにそれぞれ接触する。
【００２２】
すなわち、第１、第２ヒンジ部材２０，３０が通話位置側から閉位置側へ回動して、閉位置又はその直前まで回動すると、図９及び図１０において実線で示すように、球体７１，７２の矢印Ａ方向前方側に位置する一側部（第１カム部）７１ａ，７２ａが拡径部５４ｂ，５５ｂの矢印Ａ方向前方側に位置する一側部（第２カム部）５４ｃ，５５ｃに接触する。この結果、打撃部材５０を第２ヒンジ部材３０側へ付勢するコイルばね６０の付勢力が、球体７１，７２を矢印Ｂ方向へ回動付勢するとともに、打撃部材５０を矢印Ａ方向へ回動付勢する回動付勢力に変換される。この回動付勢力により、打撃部材５０が第１ヒンジ部材２０に対して矢印Ａ方向へ高速で回動させられる。すると、幅広当接凸部５２の側面５２ｂが幅広当接凹部２３の側面２３ｂに、幅狭当接凸部５３の側面５３ｂが幅狭当接凹部２４の側面２４ｂにそれぞれ突き当たる。その結果、クリック音が発生する。しかも、側面５２ｂ，５３ｂが側面２３ｂ，２４ｂにそれぞれ突き当たった状態では、第１ヒンジ部材２０が打撃部材５０を介して矢印Ａ方向へ回動付勢されるとともに、第２ヒンジ部材３０が球体７１，７２を介して矢印Ｂ方向へ回動付勢される。これにより、送話部Ｂ及び受話部Ｃが閉位置に維持される。これから明かなように、コイルばね６０、球体７１，７２の側部７１ａ，７２ａ及び凹部５４，５５の側部５４ｃ，５５ｃによって第１回動付勢手段が構成されている。また、幅広当接凹部２３及び幅狭当接凹部２４の各側面２３ｂ，２４ｂによって第１打撃部が構成され、幅広当接凸部５２及び幅狭当接凸部５３の各側面５２ｂ，５３ｂによって第２打撃部が構成されている。
【００２３】
一方、第１ヒンジ部材２０が閉位置から矢印Ｂ方向へ、第２ヒンジ部材３０が閉位置から矢印Ａ方向へそれぞれ回動して両者が通話位置又はその直前まで回動すると、図9及び図10において想像線で示すように、球体７１，７２の矢印Ｂ方向前方側（矢印Ａ方向後方側）に位置する他側部（第3カム部）７１ｂ，７２ｂが拡径部５５ｂ，５４ｂの矢印Ｂ方向前方側に位置する他側部（第4カム部）５５ｄ，５４ｄにそれぞれ接触する。この結果、コイルばね６０の付勢力が、球体７１，７２を矢印Ａ方向へ回動付勢するとともに、打撃部材５０を矢印Ｂ方向へ回動付勢する回動付勢力に変換される。この回動付勢力により、打撃部材５０が第1ヒンジ部材２０に対して矢印Ｂ方向へ高速で回動させられる。すると、幅広当接凸部５２の側面５２ａが幅広当接凹部２３の側面２３ａに、幅狭当接凸部５３の側面５３ａが幅狭当接凹部２４の側面２４ａにそれぞれ突き当たる。その結果、クリック音が発生する。しかも、側面５２ａ，５３ａが側面２３ａ，２４ａに突き当たった状態では、第１ヒンジ部材２０が打撃部材５０を介して矢印Ｂ方向へ回動付勢されるとともに、第２ヒンジ部材３０が球体７１，７２を介して矢印Ａ方向へ回動付勢される。これにより、送話部Ｂ及び受話部Ｃが通話位置に維持される。これから明らかなように、コイルばね６０、球体７１，７２の側部７１ｂ，７２ｂ及び凹部５４，５５の側部５４ｄ，５５ｄによって第２回動付勢手段が構成されている。また、幅広当接凹部２３及び幅狭当接凹部２４の各側面２３ａ，２４ａによって第３打撃部が構成され、幅広当接凸部５２及び幅狭当接凸部５３の各側面５２ａ，５３ａによって第４打撃部が構成されている。
【００２４】
上記構成のヒンジ装置１０を用いて携帯電話機Ａの送話部Ｂと受話部Ｃとを回動可能に連結する場合には、図４に示すように、第１ヒンジ部材２０の基端側部分を連結筒部Ｂ１に回動不能に嵌合させるとともに、第１ヒンジ部材２０の先端部を連結筒部Ｃ１に回動可能に嵌合させる。これにより、送話部Ｂと受話部Ｃとを第１ヒンジ部材２０を介して回動可能に連結する。また、第２ヒンジ部材３０の基部３１を連結筒部Ｃ１に回動不能に嵌合させるとともに、連結固定部３２の環状突出部３２ａを、連結筒部Ｃ１の内周面に環状に形成された固定突出部Ｃ２の内部に挿通する。このとき、環状突出部３２ａの外径は、固定突出部Ｃ２の内径より大径になっているが、環状突出部３２ａは、スリット３２ｄが形成されることによって縮径可能であり、固定突出部Ｃ２を通り抜けることができる。環状突出部３２ａが固定突出部Ｃ２を通り抜けると、第２ヒンジ部材３０の基部３１と環状突出部３２ａの端面３２ｂとが、固定突出部Ｃ２の両端面にほぼ接触する。これにより、第２ヒンジ部材３０が受話部Ｃの連結筒部Ｃ１に位置固定され、ひいてはヒンジ装置１０全体が位置固定される。この結果、送話部Ｂと受話部Ｃとがヒンジ装置１０を介して回動可能に連結される。
【００２５】
送話部Ｂと受話部Ｃとがヒンジ装置１０によって回動可能に連結された携帯電話機Ａにおいて、いま、第１ヒンジ部材２０と打撃部材５０とが図９に示す状態になっており、受話部Ｃが閉位置と通話位置との間に位置しているものとする。この状態において、仮に送話部Ｂを固定し、受話部Ｃを閉位置側（図９の矢印Ｂ方向）へ回動させたものとする。すると、球体７１，７２がコイルばね６０の付勢力により打撃部材５０の第２ヒンジ部材３０との対向面に突き当たっているので、それらの間に生じる摩擦抵抗により打撃部材５０が第２ヒンジ部材３０とともに同方向へ回動させられる。そして、幅広当接凸部５２及び幅狭当接凸部５３の側面５２ａ，５３ａが幅広当接凹部２３及び幅狭当接凹部２４の側面２３ａ，２４ａにそれぞれ突き当たると、打撃部材５０はそれ以上矢印Ｂ方向へ回動することができなくなり、第１ヒンジ部材２０に位置固定される。換言すると、打撃部材５０は、第２ヒンジ部材３０に対し第１ヒンジ部材２０と共に矢印Ａ方向へ相対的に回動する。打撃部材５０が第１ヒンジ部材２０に位置固定された後は、球体７１，７２が打撃部材５０の第２ヒンジ部材３０との対向面上を摺接する。このとき、球体７１，７２及び打撃部材５０が、第２ヒンジ部材３０を構成する樹脂より硬度の高い金属、セラミック等によって構成されているので、球体７１，７２及び打撃部材５０が早期に摩耗するのを防止することができる。
【００２６】
受話部Ｃが閉位置又はその直前まで回動すると、球体７１、７２の側部７１ａ，７２ａが凹部５４，５５の側部５４ｃ，５５ｃに接触する。すると、コイルばね６０の付勢力により、打撃部材５０が図９の矢印Ａ方向へ回動付勢され、第１ヒンジ部材２０に対して同方向へ高速で回動させられる。打撃部材５０が上記幅の差ΔＷの分だけ同方向へ回動すると、幅広当接凸部５２及び幅狭当接凸部５３の側面５２ｂ，５３ｂが幅広当接凹部２３及び幅狭当接凹部２４の側面２３ｂ、２４ｂにそれぞれ突き当たる。これによって、クリック音が発生する。側面２３ｂ，２４ｂと側面５２ｂ，５３ｂとが突き当たった状態においては、送話部Ｂが打撃部材５０及び第１ヒンジ部材２０を介して矢印Ａ方向へ回動付勢され、受話部Ｃが球体７１，７２及び第２ヒンジ部材３０を介して矢印Ｂ方向へ回動付勢される。この結果、送話部Ｂと受話部Ｃとが閉位置に維持される。
【００２７】
送話部Ｂを閉位置に固定した状態で受話部Ｃを閉位置から通話位置側（図９の矢印Ａ方向）へ回動させると、それに伴って第２ヒンジ部材３０が図９の矢印Ａ方向へ回動し、球体７１，７２が同方向へ回動する。すると、球体７１，７２と凹部５４，５５の拡径部５４ｂ，５５ｂとの間に作用する摩擦抵抗により、打撃部材５０が矢印Ａ方向へ押される。ところが、このときには側面２３ｂ，２４ｂが側面５２ｂ，５３ｂにそれぞれ突き当たっているので、打撃部材５０は第１ヒンジ部材２０に位置固定されている。換言すれば、打撃部材５０は、第２ヒンジ部材３０に対し第１ヒンジ部材２０と共に矢印Ｂ方向へ相対的に回動する。したがって、第２ヒンジ部材３０が矢印Ａ方向へ回動すると、それに伴って球体７１，７２が打撃部材５０上を摺接する。勿論、これによって球体７１，７２及び打撃部材５０が早期に摩耗することがないのは上記のとおりである。
【００２８】
受話部Ｃが通話位置又はその直前まで回動すると、図９及び図１０において想像線で示すように、球体７１、７２の側部７１ｂ，７２ｂが凹部５５，５４の側部５５ｄ，５４ｄにそれぞれ接触する。すると、コイルばね６０の付勢力により、打撃部材５０が図９の矢印Ｂ方向へ回動付勢され、第１ヒンジ部材２０に対して同方向へ高速で回動する。そして、打撃部材５０が上記幅の差ΔＷの分だけ同方向へ回動すると、幅広当接凸部５２及び幅広当接凹部２３の側面５２ａ，５３ａが幅広当接凹部２３及び幅狭当接凹部２４の側面２３ａ，２４ａにそれぞれ突き当たる。これによって、クリック音が発生する。側面２３ａ，２４ａが側面５２ａ，５３ａに突き当たった状態においては、送話部Ｂが打撃部材５０及び第１ヒンジ部材２０を介して矢印Ｂ方向へ回動付勢され、受話部Ｃが球体７１，７２及び第２ヒンジ部材３０を介して矢印Ａ方向へ回動付勢される。この結果、送話部Ｂと受話部Ｃとが通話位置に維持される。
【００２９】
なお、この発明は、上記の実施の形態に限定されるものでなく、適宜変更可能である。
例えば、上記の実施の形態では、この発明に係るヒンジ装置１０を携帯電話機Ａに用いているが、ヒンジ装置１０はノート型パソコン等の他の携帯機器にも用いることができる。
また、上記の実施の形態においては、第１ヒンジ部材２０の内周面に幅広当接凹部２３及び幅狭当接凹部２４を形成し、打撃部材５０の外周面に幅広当接凸部５２及び幅狭当接凸部５３を形成しているが、第１ヒンジ部材２０の内周面に幅広当接凸部及び幅狭当接凸部を形成し、打撃部材５０の外周面に幅広当接凹部及び幅狭当接凹部を形成してもよい。
さらに、第２ヒンジ部材３０に一対の球体７１，７２を設け、打撃部材５０に一対の凹部５４，５５を設けているが、第２ヒンジ部材３０に一対の凹部を設け、打撃部材５０に一対の球体を設けてもよい。
【００３０】
【発明の効果】
以上説明したように、この発明によれば、例えば携帯電話機において受話部を閉位置又は通話位置に低速で回動させたとしても確実にクリック音を発生させることができ、しかもヒンジ装置を携帯電話機等の携帯機器に組み込む前にクリック音が発生するか否かを確認することができるという効果が得られる。
【図面の簡単な説明】
【図１】この発明に係る携帯機器の一実施の形態たる携帯電話機の送話部と受話部とを通話位置に回動させた状態で示す一部省略平面図である。
【図２】同携帯電話機の送話部と受話部とを閉位置に回動させた状態で示す側面図である。
【図３】同携帯電話機の送話部と受話部とを通話位置に回動させた状態で示す一部省略側面図である。
【図４】図１のＸ円部の拡大断面図である。
【図５】同携帯電話機に用いられたこの発明に係るヒンジ装置の一実施の形態を示す断面図である。
【図６】同ヒンジ装置の斜視図である。
【図７】同ヒンジ装置の分解斜視図である。
【図８】同ヒンジ装置の図７と逆側から見た分解斜視図である。
【図９】図５のＸ−Ｘ線に沿う拡大断面図である。
【図１０】図９のＸ−Ｘ線に沿う拡大断面図である。
【図１１】従来のヒンジ装置における一対のヒンジ部材の関係を示す図であって、図１１（Ａ），（Ｂ）は一対のヒンジ部材の対向面をそれぞれ示す平面図、図１１（Ｃ）は一対のヒンジ部材を対向させた状態で示す図１１（Ａ）のＣ−Ｃ線に沿う断面図である。
【符号の説明】
Ａ携帯電話機（携帯機器）
Ｂ送話部（第１機器本体）
Ｃ受話部（第２機器本体）
１０ヒンジ装置
２０第１ヒンジ部材
２３幅広当接凹部（当接凹部）
２３ａ側面（第１当接部、第３打撃部）
２３ｂ側面（第３当接部、第１打撃部）
２４幅狭当接凹部（当接凹部）
２４ａ側面（第１当接部、第３打撃部）
２４ｂ側面（第３当接部、第１打撃部）
３０第２ヒンジ部材
４０ヒンジ軸
５０打撃部材
５２幅広当接凸部（当接凸部）
５２ａ側面（第２当接部、第４打撃部）
５２ｂ側面（第４当接部、第２打撃部）
５３幅狭当接凸部（当接凸部）
５３ａ側面（第２当接部、第４打撃部）
５３ｂ側面（第４当接部、第２打撃部）
５４凹部
５４ｃ側部（第２カム部）
５４ｄ側部（第４カム部）
５５凹部
５５ｃ側部（第２カム部）
５５ｄ側部（第４カム部）
６０コイルばね（付勢手段）
７１球体（凸部）
７１ａ側部（第１カム部）
７１ｂ側部（第３カム部）
７２球体（凸部）
７２ａ側部（第１カム部）
７２ｂ側部（第３カム部）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hinge device capable of generating a click sound at a predetermined rotation position and a portable device such as a mobile phone using the hinge device.
[0002]
[Prior art]
Generally, a hinge device used in a mobile phone has first and second hinge members, and the first and second hinge members are connected to each other via a hinge shaft so as to be rotatable. The first and second hinge members are non-rotatably connected to the transmitter and receiver of the mobile phone, respectively, so that the transmitter and receiver are rotatably connected via the hinge device. Has been.
[0003]
Incidentally, in the conventional hinge device, the first and second hinge members are brought into contact with each other by a biasing means such as a coil spring. 11 (A) and 11 (B) show the contact surfaces of the first and second hinge members in the conventional hinge device, respectively. The contact surfaces of the first hinge member 1 are arranged in the radial direction. Three recessed portions 1a, 1b, and 1c each having a substantially trapezoidal cross section are arranged and formed at predetermined locations in the circumferential direction. On the other hand, two convex portions 2 a and 2 b are formed on the contact surface of the second hinge member 2. As shown in FIG. 11C, the two convex portions 2a and 2b are formed in the concave portions 1a and 1b when the transmitting portion and the receiving portion of the mobile phone using the hinge device are rotated to the closed position, for example. Fits into each. Then, the urging force of the urging means is converted into a rotating urging force for rotating the first and second hinge members 1 and 2 in the opposite directions by the inclined side surfaces of the recesses 1a and 1b and the protrusions 2a and 2b. Is done. Then, due to the turning urging force, the transmitting part and the receiving part are rotated at high speed and collide vigorously. As a result, a click sound is generated. On the other hand, when the transmitting part and the receiving part are rotated to the talking position, the convex parts 2a and 2b are fitted into the concave parts 1c and 1a, respectively, and the transmitting part and the receiving part collide. As a result, a click sound is generated (see Japanese Patent Laid-Open No. 7-11831).
[0004]
[Problems to be solved by the invention]
In the conventional hinge device, when the transmitter and receiver are turned to the closed position or the call position, that is, when the convex portions 2a and 2b are fitted into the concave portions 1a and 1b (1c and 1a), When the transmitting section and the receiving section are rotated at a low speed against the urging force of the urging means, the transmitting section and the receiving section are merely in contact with each other and do not strike with force. For this reason, there was a problem that no click sound was generated.
[0005]
The present applicant has previously proposed a hinge device that can solve the above problems (see Japanese Patent Application Laid-Open No. 2001-152728). In the hinge device according to the previous proposal, the movable member is connected to the first hinge member so as not to be rotatable and movable, and the movable member is pushed against the second hinge member by a coil spring (biasing means). It has been applied. A convex portion and a concave portion are formed on each contact surface of the movable member and the second hinge member, respectively. The convex portion and the concave portion are fitted to each other when the transmitting portion and the receiving portion are rotated to the closed position or the call position, and convert the urging force of the coil spring into the rotating urging force. Further, the second hinge member and the receiving part are formed with a contact convex part and a contact concave part that fit into each other. By fitting the contact convex portion and the contact concave portion, the second hinge member rotates following the receiving portion. However, the circumferential width of the contact recess is slightly wider than the circumferential width of the contact protrusion. Therefore, the second hinge member can be relatively rotated by a minute angle corresponding to the difference in width in the circumferential direction between the contact concave portion and the contact convex portion with respect to the receiving portion.
[0006]
In the hinge device having such a structure, when the receiving part rotates to the closed position or the talking position and the convex part fits into the concave part, the second hinge member is moved relative to the receiving part by the urging force of the urging means. It can be rotated by a minute angle. In this case, the second hinge member is rotated at a high speed with respect to the reception unit regardless of the rotation speed of the transmission unit and the reception unit. Therefore, even if the transmitting part and the receiving part are rotated at a low speed, the side surfaces in the circumferential direction of the contact convex part and the contact concave part collide at high speed. Therefore, a click sound is reliably generated.
[0007]
However, in the hinge device according to the previous proposal, one of the contact concave portion and the contact convex portion for generating the click sound is provided on the hinge member, and the other is provided on the receiving portion. Whether the click sound is generated or not is not known unless the hinge device is incorporated into the mobile phone, and there is a problem that even if the click sound does not occur or even if the click sound occurs, only a small click sound is generated. It was.
[0008]
[Means for Solving the Problems]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a hinge device that can generate a click sound by the hinge device itself. In order to achieve such an object, the first invention is characterized in that a first and a second hinge member rotatably connected to each other, and a rotation axis line between the first and second hinge members. And when the first hinge member is rotated in one direction to a predetermined first rotation position with respect to the second hinge member, the striking member is moved in the one direction. A first rotation urging means for urging the rotation, and the first hinge member and the striking member abut against each other when the first hinge member rotates in the one direction, and the striking member. First and second abutting portions are provided for rotating the first and second hinge members together with the first hinge member, and the first hinge member reaches the first rotation position and the striking member is moved to the first rotation. When they are rotated in the one direction by the biasing means, they abut against each other. First, second striking part is characterized by being provided.
In this case, the striking member is movable in the rotation axis direction, and the first rotation biasing means biases the striking member from the first hinge member side to the second hinge member side. And a biasing member to be brought into contact with the second hinge member, and a contact surface between the second hinge member and the striking member, and the first hinge member has reached the first rotation position. Sometimes, it is desirable to have first and second cam portions that convert the urging force of the urging means into a rotation urging force that urges the striking member in the one direction.
When the first hinge member rotates in the other direction up to a predetermined second rotation position with respect to the second hinge member, a second rotation bias that biases the striking member in the other direction. The first hinge member and the striking member further come into contact with each other when the first hinge member rotates in the other direction so that the striking member rotates in the other direction together with the first hinge member. Third and fourth contact portions to be moved are provided, the first hinge member reaches the second rotation position, and the striking member is rotated in the other direction by the second rotation urging means. It is desirable that third and fourth striking portions that come into contact with each other when provided are provided.
Either one of the first hinge member and the striking member has a contact recess, and the other has a circumferential width narrower than the circumferential width of the contact recess, and surrounds the contact recess. Abutment convex portion that allows rotation between the first hinge member and the striking member by an amount corresponding to the difference in the width by being fitted so as to be relatively movable in the circumferential direction by the difference in the width in the direction. The one side surface in the circumferential direction of the contact concave portion is the first contact portion and the third hitting portion, and the one side surface in the circumferential direction of the contact convex portion is the second contact portion and the second strike portion. The other impact surface in the circumferential direction of the contact recess is the third contact portion and the first impact portion, and the other impact surface in the circumferential direction of the contact projection is the fourth contact portion. And it is desirable to be the said 2nd hit | damage part.
The striking member is movable in the rotation axis direction, and the first rotation biasing means biases the striking member from the first hinge member side to the second hinge member side, and An urging member to be brought into contact with the second hinge member, and a contact surface between the second hinge member and the striking member, respectively, and when the first hinge member reaches the first rotation position, A first cam portion and a second cam portion for converting a biasing force of the biasing member into a pivoting biasing force for biasing the striking member in the one direction; Formed on the contact surfaces of the biasing means, the second hinge member and the striking member, respectively, and when the first hinge member reaches the second rotation position, the biasing member is biased. Third and fourth cam portions that convert the force into a rotation biasing force that biases the striking member in the other direction. It is desirable to have.
One of the contact surfaces of the second hinge member and the striking member is provided with a pair of convex portions 180 degrees apart in the circumferential direction, and the other is provided with a pair of concave portions 180 degrees apart in the circumferential direction. The one side portion and the other side portion in the circumferential direction of the convex portion are the first and third cam portions, respectively, and the one side portion and the other side portion in the circumferential direction of the concave portion are the second and second sides, respectively. It is desirable to have 4 cam parts.
It is desirable that the convex portion is formed in a convex spherical shape on the second hinge member. It is desirable that the convex portion is constituted by a part of a sphere formed separately from the second hinge member.
The second hinge member is preferably made of resin, and the sphere and the striking member are preferably made of a material having a higher hardness than the resin constituting the second hinge member.
The first hinge member is formed as a cylindrical body having a bottom portion at one end opposite to the second hinge member side and having the other end opened, and the biasing member is formed inside the first hinge member. And the striking member are sequentially inserted from the bottom side, the abutting concave portion is formed on one of the inner peripheral surface of the first hinge member and the outer peripheral surface of the striking member, and the abutting convex portion is formed on the other side. It is desirable that
Moreover, 2nd invention is a portable apparatus with which the 1st, 2nd apparatus main body is rotatably connected via a hinge apparatus, The hinge apparatus in any one of Claims 1-10 as said hinge apparatus And the first and second hinge members of the hinge device are connected to the first and second device main bodies in a non-rotatable manner, respectively.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to FIGS.
1 to 3 show a mobile phone (mobile device) A according to the present invention. The mobile phone A includes a transmitter (first device main body) B and a receiver (second device main body) C. It has. Connecting cylinders B1 and B1 are formed on the left and right sides at the end of the transmitter B on the receiver C side, and a cable insertion part B2 is formed in the center. Connection cylinder portions C1 and C1 are formed at the end of the receiving portion C on the transmitting portion B side. Each connecting cylinder part C1 is inserted between the connecting cylinder part B1 and the cable insertion part B2. And as shown in FIG. 4, adjacent connection cylinder part B1, C1 is connected by the hinge apparatus 10 which concerns on this invention so that rotation is possible centering | focusing on the axis line (= axis line of connection cylinder part B1, C1). . Thereby, the transmission part B and the reception part C are connected via the hinge apparatus 10 so that rotation is possible. The rotation range of the transmitting part B and the receiving part C is such that the angle between the closed position shown in FIG. 2 where the front faces Bf and Cf abut each other and the front faces Bf and Cf is about 160 °. It is restricted between the call positions shown in FIG. Note that a cable (not shown) that electrically connects the transmitter B and the receiver C is inserted through the cable insertion part B2.
[0010]
As shown in FIGS. 4 to 8, the hinge device 10 used in the mobile phone A includes a first hinge member 20, a second hinge member 30, a hinge shaft 40, a striking member 50, and a coil spring (biasing means) 60. I have.
[0011]
The first hinge member 20 is made of a relatively hard resin or metal, and has a cylindrical portion 21 and a bottom portion 22 formed integrally with one end portion of the cylindrical portion 21. As shown in FIG. 9, a pair of wide contact recesses (contact recesses) 23, 23 are formed 180 ° apart in the circumferential direction on the inner peripheral surface of the cylindrical portion 21, and a pair of narrow contact portions The recesses (contact recesses) 24 and 24 are formed 180 ° apart in the circumferential direction and 90 ° apart from the wide contact recess 23 in the circumferential direction. The width in the circumferential direction of the narrow contact recess 24 is slightly narrower than the width of the wide contact recess 23, but may be the same width. Further, only one of the pair of wide contact recesses 23 and 23 and the pair of narrow contact recesses 24 and 24 may be formed. The wide contact recess 23 and the narrow contact recess 24 extend over the entire length of the first hinge member 20. A through hole 22 a is formed in the center of the bottom portion 22 so as to penetrate the bottom portion 22.
[0012]
The second hinge member 30 is formed by molding a relatively hard resin. As shown in FIGS. 4 to 8, the second hinge member 30 has a solid columnar base 31 and one end surface of the base 31. And a connecting and fixing portion 32 having a cylindrical shape that is formed integrally therewith. The base portion 31 and the connection fixing portion 32 are formed so that their axis lines coincide with each other. An insertion hole 31 a is formed in the central portion of the base portion 31 so as to penetrate the axial line from one end surface to the other end surface. A tapered hole portion 31b is formed in the opening portion of the insertion hole 31a on the side of the connecting and fixing portion 32. On the other hand, an annular projecting portion 32 a is formed at the distal end portion of the connection fixing portion 32. An end surface 32 b on the base end side (base portion 31 side) of the annular projecting portion 32 a is a plane orthogonal to the axis of the second hinge member 30. A tapered portion 32c having a diameter increasing from the distal end side toward the proximal end side is formed at the distal end portion of the outer peripheral surface of the annular projecting portion 32a. The outer diameter of the end portion on the small diameter side of the taper portion 32c is slightly smaller than the outer diameter of the connection fixing portion 32 excluding the annular projecting portion 32a. In addition, the connection fixing portion 32 is formed with a slit 32d that crosses the axis and extends from the distal end to the proximal end. By forming the slit 32d, the annular protrusion 32a can be expanded and contracted.
[0013]
The first hinge member 20 and the second hinge member 30 have their axes aligned with each other, and the opening side end portion of the cylindrical portion 21 and the end portion on the opposite side of the connection fixing portion 32 side of the base portion 31 are opposed to each other. Arranged in a state. And the 1st hinge member 20 and the 2nd hinge member 30 are connected by the hinge axis | shaft 40 so that rotation is possible.
[0014]
As shown in FIGS. 4, 5, 7, and 8, the hinge shaft 40 includes a head 41, a large-diameter portion 42, which are sequentially formed from one end side to the other end side so that their axes coincide with each other. It has a medium diameter part 43, a small diameter part 44, and a caulking part 45. The head 41, the large-diameter portion 42, the medium-diameter portion 43, the small-diameter portion 44, and the caulking portion 45 are all formed in a circular cross section, and have a small diameter in that order. The head portion 41 of the hinge shaft 40 abuts against the outer end surface of the bottom portion 22 of the first hinge member 20, and the large diameter portion 42 can rotate through the through hole 22 a toward the opening portion side of the first hinge member 20. Has penetrated. The small diameter portion 44 of the hinge shaft 40 has an outer diameter substantially the same as the inner diameter of the insertion hole 31a of the second hinge member 30, and is rotatably inserted into the insertion hole 31a. The distal end portion of the crimping portion 45 projects from the insertion hole 31a, and the projecting distal end portion is crimped into a shape corresponding to the tapered hole portion 31b, whereby an annular portion 46 (see FIG. 5) is formed. Yes. The base portion 31 of the second hinge member 30 is sandwiched between the annular portion 46 and the distal end surface 43 a of the medium diameter portion 43. Thereby, the position of the second hinge member 30 is fixed to the hinge shaft 40. As a result, the first hinge member 20 is prevented from being detached from the hinge shaft 40 by the head 41 and the second hinge member 30, and the first and second hinge members 20, 30 are rotatably connected via the hinge shaft 40. Has been. Note that the length from the end surface of the head portion 41 on the large-diameter portion 42 side to the tip surface 43a of the medium-diameter portion 43 is slightly longer than the entire length of the first hinge member 20, and the first difference is the first. A slight gap is formed between the hinge member 20 and the second hinge member 30.
[0015]
As shown in FIG. 4, the first hinge member 20 is configured such that a portion other than the tip thereof is non-rotatably fitted to the connecting tube portion B1 of the transmitter B, and the tip is a connecting tube of the receiver C. The part C1 is rotatably fitted. Thereby, the transmission part B and the reception part C are connected so that rotation is possible. In addition, the first hinge member 20 is configured to rotate integrally with the transmitter B. On the other hand, the base 31 of the second hinge member 30 is non-rotatably fitted to the connecting cylinder C1 of the receiver C. Therefore, the second hinge member 30 rotates integrally with the receiving part C. Thus, since the 1st, 2nd hinge members 20 and 30 rotate integrally with the transmission part B and the reception part C, respectively, below, the transmission part B and the reception part C rotated to the closed position. The pivot positions of the first and second hinge members 20 and 30 are also referred to as closed positions, and the first and second hinge members 20 and 30 when the transmitting section B and the receiving section C are rotated to the talking position. The rotation position is also referred to as a call position.
[0016]
As shown in FIGS. 4 and 5, the coil spring 60 and the striking member 50 are sequentially inserted into the cylindrical portion 21 of the first hinge member 20 from the bottom 22 side toward the opening side. The coil spring 60 urges the striking member 50 from the first hinge member 20 side toward the second hinge member 30 side by having one end abutting against the bottom portion 22 and the other end abutting against the striking member 50.
[0017]
The striking member 50 is made of a material having a hardness higher than that of the resin constituting the second hinge member 30, for example, a metal such as steel, ceramic, etc. As shown in FIGS. 7 to 9, the outer diameter is the first hinge. It has a disc-shaped main body 51 that is slightly smaller in diameter than the inner diameter of the cylindrical portion 21 of the member 20. A through hole 51a is formed in the central portion of the main body 51, and an intermediate diameter portion 43 of the hinge shaft 40 is rotatably inserted into the through hole 51a so as to be movable in the axial direction. Yes. A pair of wide abutment protrusions (abutment protrusions) 52 and 52 and a pair of narrow abutment protrusions (abutment protrusions) 53 and 53 are integrally formed on the outer peripheral surface of the main body 51. ing. The pair of wide contact protrusions 52, 52 are arranged 180 degrees apart in the circumferential direction of the main body 51. The pair of narrow abutment protrusions 53, 53 are arranged 180 ° apart in the circumferential direction of the main body 51 and 90 ° apart from the wide abutment projection 52.
[0018]
The wide contact convex portion 52 and the narrow contact convex portion 53 are respectively rotatable to the wide contact concave portion 23 and the narrow contact concave portion 24 of the first hinge member 20, and of the first hinge member 20. It is fitted so that it can move in the axial direction. Here, the widths in the circumferential direction of the wide contact projections 52 and the narrow contact projections 53 are narrower than the circumferential widths of the wide contact recesses 23 and the narrow contact recesses 24, respectively. The difference in width between the contact protrusion 52 and the wide contact recess 23 is equal to the difference in width between the narrow contact protrusion 53 and the narrow contact recess 24. Therefore, if the difference in width between them is ΔW, the striking member 50 can rotate with respect to the first hinge member 20 by an angle corresponding to the difference ΔW in width. Accordingly, the first hinge member 20 is relative to the second hinge member 30 in the direction of arrow A in FIG. 9 (the direction from the talking position side to the closed position side, hereinafter referred to as the closing direction) or the arrow B direction (closed). When the striking member 50 is rotated in the direction from the position side to the talking position side (hereinafter referred to as the opening direction), the striking member 50 is relative to the first hinge member 20 in the opposite direction to the rotation direction by ΔW at most. After the rotation, the side surface 23a (23b) of the wide contact concave portion 23 abuts on the side surface 52a (52b) of the wide contact convex portion 52 and the side surface 53a (53b) of the narrow contact convex portion 53 has a width. When the side surface 24a (24b) of the narrow contact recess 24 abuts, the first hinge member 20 rotates. As is clear from this, in this embodiment, one side surface 23a, 24a of the wide contact recess 23 and the narrow contact recess 24 is the first contact part, and the wide contact convex part 52 and the narrow contact convex part. The side surfaces 52a and 53a of the portion 53 are the second contact portion, the other side surfaces 23b and 24b of the wide contact recess 23 and the narrow contact recess 24 are the third contact portion, the wide contact convex portion 52 and the width. The other side surfaces 52b and 53b of the narrow contact convex portion 53 are the fourth contact portions.
In addition, about the wide contact convex part 52 and the narrow contact convex part 53, when any one of the wide contact recessed part 23 and the narrow contact recessed part 24 is formed, only one corresponding is formed. It is formed.
[0019]
As shown in FIG. 5, a pair of support recesses 31 c and 31 c are spaced 180 ° in the circumferential direction about the axis of the second hinge member 30 on the surface of the base 31 of the second hinge member 30 facing the striking member 50. Arranged. Spherical bodies (convex portions) 71 and 72 are fitted and fixed to the support concave portions 31c and 31c in a state where a part of each of the spherical bodies (convex portions) 71 protrudes toward the striking member 50. The spheres 71 and 72 are made of a material having a hardness higher than that of the resin constituting the second hinge member 30, for example, a metal such as steel or a ceramic. The spheres 71 and 72 can be fixed to the second hinge member 30 at the same time as the second hinge member 30 is molded by, for example, an insert molding method. That is, when the second hinge member 30 is molded, the spheres 71 and 72 are set in advance at predetermined locations in a mold (not shown) for molding the second hinge member 30. Then, the molten resin is filled in the mold. Thereby, the spherical bodies 71 and 72 can be fixed to the second hinge member 30 at the same time as the second hinge member 30 is molded.
[0020]
As shown in FIGS. 4, 5, 8, and 9, on the surface of the striking member 50 that faces the second hinge member 30, the axis is the axis of the hinge device 10 (= first and second hinge members 20, 30 and each axis of the striking member 50) and Made parallel A pair of recesses 54 and 55 are formed. The pair of recesses 54 and 55 have the same shape and the same dimensions, and are formed on the opening side from the straight holes 54a and 55a having a circular cross section formed on the bottom side, and from the bottom side to the opening side. It is comprised from the enlarged diameter part 54b, 55b which expands as it goes to. The enlarged diameter portions 54b and 55b are formed by convex curved surfaces that bulge outward, and one end is Straight hole 54a, 55a is in smooth contact with the inner peripheral surface, and the other end is in smooth contact with the surface of the striking member 50 facing the second hinge member 30. The maximum diameter of the enlarged diameter portions 54b and 55b (the diameter of the enlarged diameter portions 54b and 55b on the surface of the striking member 50 facing the second hinge member 30) is set to be larger than the outer diameter of the spheres 71 and 72. The minimum diameter of the diameter portions 54b and 55b (= the inner diameter of the straight hole portion 54a) is set smaller than the outer diameter of the spheres 71 and 72. The enlarged diameter portions 54b and 55b may be formed by a concave curved surface, or may be formed by a tapered surface whose bus is a straight line.
[0021]
The pair of recesses 54, 55 are arranged 180 ° apart in the circumferential direction on the circumference centered on the axis of the striking member 50 (= the axis of the first and second hinge members 20, 30). The circumference in which the pair of recesses 54 and 55 are arranged has the same diameter as the circumference in which the pair of spheres 71 and 72 is arranged. Therefore, when the first and second hinge members 20 and 30 are rotated to the predetermined rotation positions, the spheres 71 and 72 come into contact with the bottom surfaces that define the recesses 54 and 55. Here, the predetermined rotation positions are a closed position and a talking position. When the first and second hinge members 20 and 30 are located at the closed positions, the spheres 71 and 72 are indicated by solid lines in FIG. Furthermore, when the first and second hinge members 20 and 30 are in contact with the expanded diameter portions 54b and 55b, respectively, the spheres 71 and 72 are expanded as shown in phantom lines in FIG. , 54b respectively.
[0022]
That is, when the first and second hinge members 20 and 30 are rotated from the talking position side to the closed position side and are rotated to the closed position or just before the closed position, as shown by the solid line in FIGS. , 72 one side portion (first cam portion) 71a, 72a located on the front side in the arrow A direction of 72 is one side portion (second cam portion) 54c located on the front side in the arrow A direction of the enlarged diameter portions 54b, 55b. 55c is contacted. As a result, the urging force of the coil spring 60 that urges the striking member 50 toward the second hinge member 30 turns the spheres 71 and 72 in the direction of arrow B, and rotates the striking member 50 in the direction of arrow A. It is converted into a rotational biasing force that moves and biases. Due to this rotation biasing force, the striking member 50 is rotated at high speed in the direction of arrow A with respect to the first hinge member 20. Then, the side surface 52 b of the wide contact convex portion 52 abuts on the side surface 23 b of the wide contact concave portion 23, and the side surface 53 b of the narrow contact convex portion 53 contacts the side surface 24 b of the narrow contact concave portion 24. As a result, a click sound is generated. In addition, in a state where the side surfaces 52b and 53b are in contact with the side surfaces 23b and 24b, the first hinge member 20 is urged to rotate in the direction of arrow A via the striking member 50, and the second hinge member 30 is the sphere 71. , 72 is urged to rotate in the direction of arrow B. Thereby, the transmission part B and the reception part C are maintained in a closed position. As will be apparent, the coil spring 60, the side portions 71a and 72a of the spheres 71 and 72, and the side portions 54c and 55c of the recesses 54 and 55 constitute the first rotation biasing means. Also, the first striking portion is constituted by the side surfaces 23 b and 24 b of the wide contact concave portion 23 and the narrow contact concave portion 24, and the side surfaces 52 b and 53 b of the wide contact convex portion 52 and the narrow contact convex portion 53. A second hitting portion is configured.
[0023]
On the other hand, the first hinge member 20 is moved from the closed position to the arrow. B Direction, the second hinge member 30 is an arrow from the closed position A When both of them turn to the direction and turn to the talking position or just before that, as indicated by the imaginary line in FIGS. 9 and 10, the spheres 71 and 72 are moved forward in the direction of arrow B (rearward in the direction of arrow A). The other side portions (third cam portions) 71b and 72b located in contact with the other side portions (fourth cam portions) 55d and 54d located on the front side in the arrow B direction of the enlarged diameter portions 55b and 54b, respectively. As a result, the urging force of the coil spring 60 is converted into a rotation urging force that urges the spheres 71 and 72 in the direction of arrow A and urges the striking member 50 in the direction of arrow B. Due to this rotation biasing force, the striking member 50 is rotated at high speed in the direction of arrow B with respect to the first hinge member 20. Then, the side surface 52 a of the wide contact convex portion 52 abuts on the side surface 23 a of the wide contact concave portion 23, and the side surface 53 a of the narrow contact convex portion 53 contacts the side surface 24 a of the narrow contact concave portion 24. As a result, a click sound is generated. Moreover, in a state where the side surfaces 52a and 53a are in contact with the side surfaces 23a and 24a, the first hinge member 20 is urged to rotate in the direction of arrow B via the striking member 50, and the second hinge member 30 is It is urged to rotate in the direction of arrow A via 72. Thereby, the transmission part B and the reception part C are maintained at the call position. As is clear from this, the coil spring 60, the side portions 71b and 72b of the spheres 71 and 72, and the side portions 54d and 55d of the concave portions 54 and 55 constitute the second rotation urging means. Further, the third striking portion is constituted by the side surfaces 23 a and 24 a of the wide contact concave portion 23 and the narrow contact concave portion 24, and the side surfaces 52 a and 53 a of the wide contact convex portion 52 and the narrow contact convex portion 53. A fourth hitting portion is configured.
[0024]
When the transmitting unit B and the receiving unit C of the mobile phone A are rotatably connected using the hinge device 10 having the above configuration, as shown in FIG. 4, the proximal end portion of the first hinge member 20 Is fitted to the connecting cylinder part B1 in a non-rotatable manner, and the tip of the first hinge member 20 is fitted to the connecting cylinder part C1 so as to be rotatable. Thereby, the transmission part B and the reception part C are connected via the 1st hinge member 20 so that rotation is possible. Further, the base 31 of the second hinge member 30 is non-rotatably fitted to the connecting cylinder part C1, and the annular protrusion 32a of the connecting fixing part 32 is formed in an annular shape on the inner peripheral surface of the connecting cylinder part C1. It passes through the inside of the fixed protrusion C2. At this time, the outer diameter of the annular projecting portion 32a is larger than the inner diameter of the fixed projecting portion C2, but the annular projecting portion 32a can be reduced in diameter by forming the slit 32d, and the fixed projecting portion You can pass through C2. When the annular projecting portion 32a passes through the fixed projecting portion C2, the base 31 of the second hinge member 30 and the end surface 32b of the annular projecting portion 32a are substantially in contact with both end surfaces of the fixed projecting portion C2. Thereby, the position of the second hinge member 30 is fixed to the connecting cylinder portion C1 of the receiving portion C, and as a result, the entire hinge device 10 is fixed. As a result, the transmission part B and the reception part C are connected via the hinge device 10 so as to be rotatable.
[0025]
In the mobile phone A in which the transmitter B and the receiver C are rotatably connected by the hinge device 10, the first hinge member 20 and the striking member 50 are in the state shown in FIG. Assume that the part C is located between the closed position and the call position. In this state, it is assumed that the transmitter B is fixed and the receiver C is rotated toward the closed position (in the direction of arrow B in FIG. 9). Then, since the spherical bodies 71 and 72 are abutted against the surface of the striking member 50 facing the second hinge member 30 by the biasing force of the coil spring 60, the striking member 50 is caused by the frictional resistance generated between them. At the same time, it is rotated in the same direction. When the side surfaces 52a and 53a of the wide contact convex portion 52 and the narrow contact convex portion 53 abut against the side surfaces 23a and 24a of the wide contact concave portion 23 and the narrow contact concave portion 24, the striking member 50 is further moved. It becomes impossible to rotate in the direction of arrow B, and the position is fixed to the first hinge member 20. In other words, the striking member 50 rotates relative to the second hinge member 30 in the direction of arrow A together with the first hinge member 20. After the striking member 50 is fixed to the first hinge member 20, the spheres 71 and 72 are in sliding contact with the surface of the striking member 50 facing the second hinge member 30. At this time, since the spheres 71 and 72 and the striking member 50 are made of a metal, ceramic, or the like whose hardness is higher than that of the resin constituting the second hinge member 30, the spheres 71 and 72 and the striking member 50 are worn early. Can be prevented.
[0026]
When the receiving part C rotates to the closed position or just before it, the side parts 71a and 72a of the spheres 71 and 72 come into contact with the side parts 54c and 55c of the concave parts 54 and 55, respectively. Then, by the urging force of the coil spring 60, the striking member 50 is urged to rotate in the direction of arrow A in FIG. 9 and is rotated at high speed in the same direction with respect to the first hinge member 20. When the striking member 50 rotates in the same direction by the width difference ΔW, the side surfaces 52b and 53b of the wide contact convex portion 52 and the narrow contact convex portion 53 become the wide contact concave portion 23 and the narrow contact concave portion. It strikes against the side surfaces 23b, 24b of 24 respectively. As a result, a click sound is generated. In a state where the side surfaces 23b, 24b and the side surfaces 52b, 53b are in contact with each other, the transmitting portion B is urged to rotate in the direction of arrow A via the striking member 50 and the first hinge member 20, and the receiving portion C is a sphere 71. , 72 and the second hinge member 30 are urged to rotate in the direction of arrow B. As a result, the transmitter B and the receiver C are maintained in the closed position.
[0027]
When the receiving section C is rotated from the closed position to the talking position side (in the direction of arrow A in FIG. 9) with the transmitting section B fixed at the closed position, the second hinge member 30 is moved along with the arrow A in FIG. The spheres 71 and 72 are rotated in the same direction. Then, the striking member 50 is pushed in the direction of arrow A by the frictional resistance acting between the spherical bodies 71 and 72 and the enlarged diameter portions 54b and 55b of the concave portions 54 and 55. However, at this time, since the side surfaces 23b and 24b are in contact with the side surfaces 52b and 53b, the striking member 50 is fixed to the first hinge member 20. In other words, the striking member 50 rotates relative to the second hinge member 30 in the arrow B direction together with the first hinge member 20. Therefore, when the second hinge member 30 rotates in the direction of arrow A, the spheres 71 and 72 are brought into sliding contact with the striking member 50 accordingly. Of course, the spherical bodies 71 and 72 and the striking member 50 are not worn at an early stage by this, as described above.
[0028]
When the receiving part C is rotated to the talking position or immediately before, the side parts 71b and 72b of the spheres 71 and 72 are respectively connected to the side parts 55d and 54d of the concave parts 55 and 54, as indicated by imaginary lines in FIGS. Contact. Then, the striking member 50 is urged to rotate in the direction of arrow B in FIG. 9 by the urging force of the coil spring 60, and rotates at high speed in the same direction with respect to the first hinge member 20. When the striking member 50 rotates in the same direction by the width difference ΔW, the side surfaces 52a and 53a of the wide contact convex portion 52 and the wide contact concave portion 23 become the wide contact concave portion 23 and the narrow contact concave portion. It strikes against the side surfaces 23a, 24a of 24 respectively. As a result, a click sound is generated. In a state where the side surfaces 23a and 24a are in contact with the side surfaces 52a and 53a, the transmitting part B is urged to rotate in the direction of arrow B via the striking member 50 and the first hinge member 20, and the receiving part C is It is urged to rotate in the direction of arrow A via 72 and the second hinge member 30. As a result, the transmitter B and the receiver C are maintained at the call position.
[0029]
In addition, this invention is not limited to said embodiment, It can change suitably.
For example, in the above embodiment, the hinge device 10 according to the present invention is used for the mobile phone A, but the hinge device 10 can also be used for other portable devices such as a notebook personal computer.
In the above embodiment, the wide contact recess 23 and the narrow contact recess 24 are formed on the inner peripheral surface of the first hinge member 20, and the wide contact convex portion 52 and Although the narrow contact convex portion 53 is formed, the wide contact convex portion and the narrow contact convex portion are formed on the inner peripheral surface of the first hinge member 20, and the wide contact is formed on the outer peripheral surface of the striking member 50. You may form a recessed part and a narrow contact recessed part.
Further, the second hinge member 30 is provided with a pair of spheres 71 and 72, and the striking member 50 is provided with a pair of recesses 54 and 55. The second hinge member 30 is provided with a pair of recesses and the striking member 50 has a pair. The sphere may be provided.
[0030]
【The invention's effect】
As described above, according to the present invention, for example, a click sound can be reliably generated even when the receiver is rotated to a closed position or a call position at a low speed in a mobile phone, and the hinge device can be used as a mobile phone. Thus, it is possible to confirm whether or not a click sound is generated before being incorporated into a portable device.
[Brief description of the drawings]
FIG. 1 is a partially omitted plan view showing a state in which a transmitter and receiver of a mobile phone as an embodiment of a mobile device according to the present invention are rotated to a call position.
FIG. 2 is a side view showing a state in which a transmitter and a receiver of the mobile phone are rotated to a closed position.
FIG. 3 is a partially omitted side view showing a state in which the transmitter and receiver of the mobile phone are rotated to a call position.
4 is an enlarged cross-sectional view of an X circle part in FIG. 1. FIG.
FIG. 5 is a cross-sectional view showing an embodiment of a hinge device according to the present invention used in the mobile phone.
FIG. 6 is a perspective view of the hinge device.
FIG. 7 is an exploded perspective view of the hinge device.
8 is an exploded perspective view of the hinge device as viewed from the opposite side to FIG. 7. FIG.
9 is an enlarged cross-sectional view taken along line XX of FIG.
10 is an enlarged sectional view taken along line XX in FIG.
FIGS. 11A and 11B are views showing a relationship between a pair of hinge members in a conventional hinge device, and FIGS. 11A and 11B are plan views showing opposing surfaces of the pair of hinge members, respectively. FIG. 12 is a cross-sectional view taken along the line CC in FIG. 11 (A) showing a pair of hinge members facing each other.
[Explanation of symbols]
A Mobile phone (mobile device)
B Transmitter (first device main body)
C Earpiece (second device body)
10 Hinge device
20 First hinge member
23 Wide contact recess (contact recess)
23a Side surface (first contact portion, third striking portion)
23b Side surface (third contact portion, first striking portion)
24 Narrow contact recess (contact recess)
24a Side surface (first contact portion, third striking portion)
24b Side surface (third contact portion, first striking portion)
30 Second hinge member
40 Hinge shaft
50 striking member
52 Wide contact protrusion (contact protrusion)
52a Side surface (second contact portion, fourth striking portion)
52b Side surface (fourth contact portion, second striking portion)
53 Narrow contact protrusion (contact protrusion)
53a Side surface (second contact portion, fourth striking portion)
53b Side surface (fourth contact portion, second striking portion)
54 recess
54c Side (second cam part)
54d Side (4th cam part)
55 recess
55c Side (second cam part)
55d Side (4th cam part)
60 Coil spring (biasing means)
71 Sphere (convex part)
71a Side (first cam part)
71b Side (third cam part)
72 Sphere (convex part)
72a Side (first cam part)
72b Side (third cam part)

Claims

A first hinge member that is non-rotatably fitted to a connecting cylinder provided in the first device main body of the portable device, and a non-rotatable fit to the connecting cylinder provided in the second device main body of the portable device. the combined, and the center and a second hinge member rotatably connected around a rotation axis in the first hinge member, the rotation axis between the first hinge member and the second hinge member And when the first hinge member is rotated in one direction to a predetermined first rotation position with respect to the second hinge member, the striking member is moved in the one direction. First striking biasing means for pivoting biasing, and the striking member is rotatably accommodated inside an end portion of the first hinge member located on the second hinge member side, The hinge member and the striking member have the first hinge member rotated in the one direction. To abut each other first for rotating the striking member to the one direction together with the first hinge member, the second contact portion is provided, et al is, contact convex portions on the outer peripheral surface of the striking member is formed, A side surface of the abutment convex portion facing the one direction is a second striking portion, and the first hinge member reaches the first rotation position on the inner peripheral surface of the first hinge member, and the striking member A hinge device comprising: a first striking portion that comes into contact with the second striking portion when the first pivotal biasing means is pivoted in the one direction.

The striking member is movable in the rotation axis direction, and the first rotation biasing means biases the striking member from the first hinge member side to the second hinge member side, and An urging member to be brought into contact with the second hinge member, and a contact surface between the second hinge member and the striking member, respectively, and when the first hinge member reaches the first rotation position, 2. The first and second cam portions for converting the urging force of the urging means into a rotation urging force that urges the striking member in the one direction. The hinge apparatus as described in.

When the first hinge member rotates in the other direction up to a predetermined second rotation position with respect to the second hinge member, a second rotation bias that biases the striking member in the other direction. The first hinge member and the striking member further contact each other when the first hinge member rotates in the other direction, and the striking member is moved together with the first hinge member in the other direction. third pivoting, the fourth contact portion is provided, et al is a side facing the other direction of the contact convex portion is a fourth striking part, the inner peripheral surface of the first hinge member, said first A third striking portion that contacts the fourth striking portion when one hinge member reaches the second pivoting position and the striking member is pivoted in the other direction by the second pivot biasing means; The hinge device according to claim 1, wherein the hinge device is provided.

A contact concave portion into which the contact convex portion is inserted is formed on the inner peripheral surface of the first hinge member, and a circumferential width of the contact convex portion is set narrower than a width of the contact concave portion, The first hinge member and the striking member are rotatable by the difference in width between the contact recess and the contact protrusion, and the side surface of the contact recess facing the one direction is the first contact. A side surface facing the other direction of the contact convex portion and the third impact portion, and a side surface facing the other direction of the contact convex portion being the second contact portion and the fourth impact portion, and a side surface facing the other direction of the contact concave portion Are the third abutting portion and the first striking portion, and the side surfaces of the abutting convex portion facing the one direction are the fourth abutting portion and the second striking portion. The hinge device according to claim 3.

The striking member is movable in the rotation axis direction, and the first rotation biasing means biases the striking member from the first hinge member side to the second hinge member side, and An urging member to be brought into contact with the second hinge member, and a contact surface between the second hinge member and the striking member, respectively, and when the first hinge member reaches the first rotation position, First and second cam portions that convert the urging force of the urging means into a rotation urging force that urges the striking member in the one direction;
The second turn biasing means, and the biasing member are formed respectively on the contact surface between the second hinge member and the striking member, said first hinge member has reached the second rotational position Sometimes, it has third and fourth cam portions that convert the urging force of the urging member into a rotation urging force that urges the striking member in the other direction. The hinge apparatus according to claim 4.

One of the contact surfaces of the second hinge member and the striking member is provided with a pair of convex portions 180 degrees apart in the circumferential direction, and the other is provided with a pair of concave portions 180 degrees apart in the circumferential direction. The one side portion and the other side portion in the circumferential direction of the convex portion are the first and third cam portions, respectively, and the one side portion and the other side portion in the circumferential direction of the concave portion are the second and second sides, respectively. The hinge device according to claim 5, wherein the hinge device is a four-cam portion.

The hinge apparatus according to claim 6, wherein the convex portion is formed in a convex spherical shape on the second hinge member.

8. The hinge device according to claim 7, wherein the convex portion is constituted by a part of a sphere formed separately from the second hinge member.

9. The hinge device according to claim 8, wherein the second hinge member is made of resin, and the sphere and the striking member are made of a material having a hardness higher than that of the resin constituting the second hinge member. .

The first hinge member is formed as a cylindrical body having a bottom portion at one end opposite to the second hinge member side and having the other end opened, and the biasing member is formed inside the first hinge member. And the striking member are sequentially inserted from the bottom side, the abutting concave portion is formed on one of the inner peripheral surface of the first hinge member and the outer peripheral surface of the striking member, and the abutting convex portion is formed on the other side. The hinge device according to claim 1, wherein the hinge device is provided.

In the portable device in which the connecting cylindrical portions of the first and second device main bodies are rotatably connected via the hinge device,
The hinge device according to any one of claims 1 to 10 is used as the hinge device, and the first and second hinge members of the hinge device are respectively rotated in the connecting cylinder portions of the first and second device bodies. A portable device characterized by being impossiblely fitted .