JP2004068939A

JP2004068939A - Hinge device and electronic equipment using the same

Info

Publication number: JP2004068939A
Application number: JP2002229703A
Authority: JP
Inventors: Yoshitaka Hayashi; 林　芳隆
Original assignee: Strawberry Corp
Current assignee: Advanex Motion Design Inc
Priority date: 2002-08-07
Filing date: 2002-08-07
Publication date: 2004-03-04

Abstract

<P>PROBLEM TO BE SOLVED: To provide an epoch-making hinge device with a very high commodity value and electronic equipment using the device. <P>SOLUTION: This hinge device pivotally attaches a first member 1 and a second member 2. A first connecting body 3 connected to the first member 1 in a detent state is provided with a cam part 4. A second connecting body 5 connected to the second member 2 in a detent state is provided with a cam engagement part 6 engaged to the cam part 4. When the cam part 4 and the cam engagement part 6 are in an engagement state, the first member 1 and the second member 2 are rotationally locked. The cam part 4 is provided to be slidable and movable in an engaging and separating direction for the cam engagement part 6. An engagement energizing mechanism 7 for energizing the cam part 4 in an engagement direction is provided on the first connecting body 3. According to relative rotation of the first member 1 and the second member 2, the cam part 4 and the cam engagement part 6 are constituted to be engageable/disengageable. Relative rotation energizing force for engagement is generated from a state in which the cam part 4 and the cam engagement part 6 are not engaged to each other. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、ヒンジ装置並びにヒンジ装置を用いた電子機器に関するものである。
【０００２】
【従来の技術及び発明が解決しようとする課題】
例えば、携帯式電子機器の典型例としての携帯式電話機においては、携帯式電話機器本体に表示画面を備えた表示体が折り畳み自在に取り付けられた折り畳みタイプと、携帯式電話機本体自体に表示画面を備えた一体タイプとがある。
【０００３】
この一体タイプは、軽量化と利便性の点で秀れるとされ、一方、スイッチの誤作動防止、コンパクト化、デザインの多様性などの点において折り畳みタイプは秀れるとされる。
【０００４】
ところで、この折り畳みタイプは、本体と表示体とがヒンジ装置を介して枢着される。
【０００５】
具体的には、このヒンジ装置は、表示体１に回り止め状態に連結する第一連結体３にカム部４を設け、本体２に回り止め状態に連結する第二連結体５に前記カム部４に係合するカム係合部６を設け、このカム部４とカム係合部６とが係合状態のとき表示体１と本体２とが回動ロックされるように構成し、前記カム係合部６に対して前記カム部４を係合離反方向にスライド移動自在に設けると共に、このカム部４を係合方向に付勢する係合付勢機構７を前記第一連結体３に設け、前記表示体１と第二部材２との相対回動に伴い、このカム部４とカム係合部６とが係脱可能となるように構成するとともに、このカム部４とカム係合部６とが係合していない状態から係合しようとする相対回動付勢力が生じるように構成したものである。尚、本実施例と同一構成部分には同一符号を付した。
【０００６】
ところで、この従来から提案されるヒンジ装置は、実際に本体２に対して表示体１を開閉回動させると、ガタついて雑音が発生するという問題点が指摘されている。
【０００７】
本出願人は、このヒンジ装置の回動時に生じる雑音の問題点に着目し、種々の実験を繰り返し行った結果、極めて商品価値の高い画期的なヒンジ装置並びにヒンジ装置を用いた電子機器を開発した。
【０００８】
【課題を解決するための手段】
添付図面を参照して本発明の要旨を説明する。
【０００９】
第一部材１と第二部材２とを枢着するヒンジ装置であって、第一部材１に回り止め状態に連結する第一連結体３にカム部４を設け、第二部材２に回り止め状態に連結する第二連結体５に前記カム部４に係合するカム係合部６を設け、このカム部４とカム係合部６とが係合状態のとき第一部材１と第二部材２とが回動ロックされるように構成し、前記カム係合部６に対して前記カム部４を係合離反方向にスライド移動自在に設けると共に、このカム部４を係合方向に付勢する係合付勢機構７を前記第一連結体３に設け、前記第一部材１と第二部材２との相対回動に伴い、このカム部４とカム係合部６とが係脱可能となるように構成するとともに、このカム部４とカム係合部６とが係合していない状態から係合しようとする相対回動付勢力が生じるように構成したヒンジ装置において、前記第一連結体３を前記カム部４を収納し得る筒状体で構成し、この第一連結体３の内面長さ方向にカム部４の周面部に設けた凸部８若しくは凹部が凹凸係止する係止条１１を設けて、この係止条１１にガイドされて前記第一連結体３内をカム部４が回り止め状態で第一連結体３の長さ方向にスライド移動自在となるように構成したことを特徴とするヒンジ装置に係るものである。
【００１０】
また、第一部材１と第二部材２とを枢着するヒンジ装置であって、第一部材１に回り止め状態に連結する第一連結体３にカム部４を設け、第二部材２に回り止め状態に連結する第二連結体５に前記カム部４に係合するカム係合部６を設け、このカム部４とカム係合部６とが係合状態のとき第一部材１と第二部材２とが回動ロックされるように構成し、前記カム係合部６に対して前記カム部４を係合離反方向にスライド移動自在に設けると共に、このカム部４を係合方向に付勢する係合付勢機構７を前記第一連結体３に設け、前記第一部材１と第二部材２との相対回動に伴い、このカム部４とカム係合部６とが係脱可能となるように構成するとともに、このカム部４とカム係合部６とが係合していない状態から係合しようとする相対回動付勢力が生じるように構成したヒンジ装置において、前記第二連結体５に前記第二部材２に設けた取付凹部２ａに回り止め状態に嵌挿連結し得る取付凸部９を設け、この取付凸部９を前記第二部材２の取付凹部２ａの断面形状と合致する断面多角形状として、前記第二部材２に対して第二連結体５を回り止め状態に連結し得るように構成し、この取付凸部９の角部９ａ同士の間の周面９ｂを凹湾曲面としたことを特徴とするヒンジ装置に係るものである。
【００１１】
また、第一部材１と第二部材２とを枢着するヒンジ装置であって、第一部材１に回り止め状態に連結する第一連結体３にカム部４を設け、第二部材２に回り止め状態に連結する第二連結体５に前記カム部４に係合するカム係合部６を設け、このカム部４とカム係合部６とが係合状態のとき第一部材１と第二部材２とが回動ロックされるように構成し、前記カム係合部６に対して前記カム部４を係合離反方向にスライド移動自在に設けると共に、このカム部４を係合方向に付勢する係合付勢機構７を前記第一連結体３に設け、前記第一部材１と第二部材２との相対回動に伴い、このカム部４とカム係合部６とが係脱可能となるように構成するとともに、このカム部４とカム係合部６とが係合していない状態から係合しようとする相対回動付勢力が生じるように構成したヒンジ装置において、前記第一連結体３を前記カム部４を収納し得る筒状体で構成し、この第一連結体３の内面長さ方向にカム部４の周面部に設けた凸部８若しくは凹部が凹凸係止する係止条１１を設けて、この係止条１１にガイドされて前記第一連結体３内をカム部４が回り止め状態でスライド移動自在となるように構成し、前記第二連結体５に前記第二部材２に設けた取付凹部２ａに回り止め状態に嵌挿連結し得る取付凸部９を設け、この取付凸部９を前記第二部材２の取付凹部２ａの断面形状と合致する断面多角形状として、前記第二部材２に対して第二連結体５を回り止め状態に連結し得るように構成し、この取付凸部９の角部９ａ同士の間の周面９ｂを凹湾曲面としたことを特徴とするヒンジ装置に係るものである。
【００１２】
また、前記カム部４の周面部に設けられる凸部８をガイドする溝部１１を前記第一連結体３の周面長さ方向に設けて、この溝部１１にガイドされて前記第一連結体３内をカム部４が回り止め状態で第一連結体３の長さ方向にスライド移動自在となるように構成したことを特徴とする請求項１，３のいずれか１項に記載のヒンジ装置に係るものである。
【００１３】
また、前記取付凸部９の角部９ａ同士の間の周面９ｂを平坦面ではなく内方に湾曲する凹湾曲面としたことを特徴とする請求項２，３のいずれか１項に記載のヒンジ装置に係るものである。
【００１４】
また、前記取付凸部９を断面略三角形状とし、この前記取付凸部９の角部９ａ同士の間の周面９ｂを平坦面ではなく内方に湾曲する凹湾曲面としたことを特徴とする請求項２，３，５のいずれか１項に記載のヒンジ装置に係るものである。
【００１５】
また、前記請求項１〜６のいずれか１項に記載のヒンジ装置を枢着部に設けたことを特徴とするヒンジ装置を用いた電子機器に係るものである。
【００１６】
また、前記第一部材１若しくは第二部材２としての蓋部若しくはフリップと、これに重合する前記第二部材２若しくは第一部材１としての本体部とを重合状態から所定開放角度まで開閉できるように枢着する枢着部に、前記請求項１〜７のいずれか１項に記載のヒンジ装置を用いた電子機器に係るものである。
【００１７】
【発明の実施の形態】
好適と考える本発明の実施の形態（発明をどのように実施するか）を、図面に基づいてその作用効果を示して簡単に説明する。
【００１８】
カム部４とカム係合部６が係合することで第一部材１と第二部材２とは回動ロックされる。このカム係合部６に対してカム部４は、係合付勢機構７により係合付勢されている為、このカム係合部６に対するカム部４が係合した回動ロック状態は保持される。
【００１９】
即ち、例えば、第一部材１と第二部材２とが重合した閉塞状態において、カム部４とカム係合部６とが係合した状態となるようにした場合、係合付勢機構７により係合付勢されているカム部４とカム係合部６との係合カム力によって例えばカム部４とカム係合部６が係脱する位置まで回動しない限り閉塞付勢されることになる。
【００２０】
ところで、本発明は、第一連結体３をカム部４を収納し得る筒状体で構成し、この第一連結体３の内面長さ方向にカム部４の周面部に設けた凸部８若しくは凹部が凹凸係止する係止条１１を設けて、この係止条１１にガイドされて前記第一連結体３内をカム部４が回り止め状態で第一連結体３の長さ方向にスライド移動自在となるように構成している。
【００２１】
これは、従来から提案されるヒンジ装置で指摘される、第一部材１と第二部材２との相対回動に際して生じる雑音を可及的に抑制することに貢献する。
【００２２】
即ち、従来から提案されるヒンジ装置のように、単に筒状の第一連結体３の内周面に沿って該第一連結体３の断面形状と同一断面形状に設定されたカム部４が回り止め状態でスライド移動する構成であった場合、この第一連結体３内でのカム部４の円滑なスライドを可能とし且つ良好な回り止めを達成しようとする場合には、非常に精度の高い成形が必要となるが、これは実質不可能であり、しかも、カム部４は樹脂成形品であるが故に、時間の経過と共に劣化して痩せてしまい、結局、第一連結体３の内周面との間に隙間が生じてしまう。
【００２３】
従って、従来から提案されるヒンジ装置は、第二部材２に対して第一部材１を回動させた際、第一連結体３内でカム部４が回動することでガタついて雑音が生じている。
【００２４】
この点、本発明は、第一連結体３の内面長さ方向に形成された係止条１１にガイドさせてカム部４をスライドさせる構成であるから、つまり、カム部４をガイドする部位を比較的成形精度の出し易い直線状の係止条１１を形成することで構成したから、カム部４の良好なスライド機能と良好な回り止め機能とを達成し得る高品位な製品が簡易且つ確実に得られることになり、よって、第一連結体３内でカム部４がガタつくのを可及的に抑制することができ、第二部材２に対して第一部材１を回動させた際における雑音が可及的に抑制されることになる。
【００２５】
また、第二連結体５に第二部材２に設けた取付凹部２ａに回り止め状態に嵌挿連結し得る取付凸部９を設け、この取付凸部９を前記第二部材２の取付凹部２ａの断面形状と合致する断面多角形状として、前記第二部材２に対して第二連結体５を回り止め状態に連結し得るように構成し、この取付凸部９の角部９ａ同士の間の周面９ｂを凹湾曲面とした場合には、第二部材２に対する第二連結体５の堅固な回り止め状態での連結が達成されるのは勿論、この第二部材２と第二連結体５との連結部位における第二部材２に対する第一部材１の回動時に生じ得る雑音を抑制し得ることになる。
【００２６】
即ち、この取付凸部９の角部９ａ同士の間の周面９ｂを凹湾曲面とすると、従来のようにこの周面が平坦面である場合に比し、第二部材２の取付凹部２ａと第二連結体５の取付凸部９との当接する表面積が大きくなるから、取付凹部２ａに嵌挿される取付凸部９が仮に痩せたとしても従来品に比して当接部分が多い故にガタつきが生じにくく、よって、それだけ雑音が可及的に抑制されることとなる。
【００２７】
また、カム部４の周面部に設けられる凸部８をガイドする溝部１１を第一連結体３の周面長さ方向に設けて、この溝部１１にガイドされて第一連結体３内をカム部４が回り止め状態で第一連結体３の長さ方向にスライド移動自在となるように構成した場合には、より具体的な構成から一層秀れたスライド機能と回り止め機能とが達成され、このことからより一層の雑音防止構造となる。
【００２８】
また、取付凸部９の角部９ａ同士の間の周面９ｂを平坦面ではなく内方に湾曲する凹湾曲面とした場合には、第二部材２の取付凹部２ａと第二連結体５の取付凸部９との当接する表面積が確実に大きくなり、このことからより一層の雑音防止構造となる。
【００２９】
また、取付凸部９を断面三角形状とし、この前記取付凸部９の角部９ａ同士の間の周面９ｂを平坦面ではなく内方に湾曲する凹湾曲面とした場合には、精度の高い成形と連結強度とを両立することになる。
【００３０】
具体的には、例えば取付凸部９の断面形状が六角形状や八角形状であった場合、それだけ凸部の径を大きくすることができるから堅固な連結強度が得られることになるが、その反面、角部が増えると成形精度が出しにくくなる為、ガタが生じ易く雑音が発生し易い連結構造となってしまう。とは言え、成形精度を出すことを優先して単なる板形状とした場合には、堅固な連結強度が得られなくなってしまう。
【００３１】
この点、取付凸部９の断面形状を断面三角形状とすることで、比較的成形精度が出し易く、且つ、堅固な連結強度が得られることになるから、雑音が発生しにくく良好な連結が達成されることになる。
【００３２】
【実施例】
本発明の具体的な実施例について図面に基づいて説明する。
【００３３】
本実施例は、図１に示すように折り畳みタイプの携帯電話に適用した場合を示したもので、表示画面を備えた表示体を第一部材１とし、操作部を備えた本体を第二部材２とし、この本体２に対して表示体１が重合した閉塞状態から表示体２を例えば１２０度まで回動した開放状態（通話状態）とすることができる枢着構造に本発明のヒンジ装置Ａを適用している。
【００３４】
また、本実施例では、表示体１の基部に取付凹部１ａを設け、本体２の基部にもこの取付凹部１ａと連通状態に隣接する取付凹部２ａを設け、この夫々の取付凹部１ａ，２ａに軸状パーツとして構成した本発明のヒンジ装置Ａを装着する構成としている。
【００３５】
具体的に説明すると、図示したように、前記表示体１には、前記取付凹部１ａに対して回り止め形状とした金属製の筒状体（ケーシング）を第一連結体３としてこの表示体１の取付凹部１ａに嵌挿して回り止め状態に固定しており、第一連結体３は断面略楕円形状（小判形状）に形成され、この第一連結体３の断面形状に合致する断面形状となるように表示体１に設けた取付凹部１ａも断面略楕円形状に形成されている。
【００３６】
また、第一連結体３には、その表裏面長さ方向に一対の溝部１１が形成されており、この溝部１１は後述するカム部４の凸部８が凹凸係止する係止条１１として構成されている。尚、係止条１１としては本実施例のように凹条に限らず凸条としても良く、この凸条の場合には、カム部４には凹部を設ける構成とする。
【００３７】
また、第一連結体３には、端部の対向位置に凹部４ａを有する合成樹脂製のカム部４が設けられており、このカム部４は、断面略楕円形状に形成されるとともに、その表裏面には一対の凸部８が形成され、この各凸部８が第一連結体３の長さ方向に形成された各係止条１１にガイドされることで第一連結体３内をスライド移動自在にして回り止め状態に設けられている。
【００３８】
また、第一連結体３には、軸部材１０が貫通形成され、この軸部材１０には前記カム部４がスライド移動自在にして回動自在に被嵌され、更に、この軸部材１０の他端部に止着ピン１２を介して合成樹脂製の第二連結体５が設けられ、この第二連結体５の内側には前記カム部４の凹部４ａと凹凸係合する一対の凸部６ａから成る係合カム部６が設けられている。
【００３９】
従って、第一連結体３内をスライド移動するカム部４は係合カム部６に対して係合離反方向にスライド移動自在となる。
【００４０】
また、第二連結体５は、その端部に前記本体２の基部に設けられた取付凹部２ａに嵌合連結し得る取付凸部９が設けられ、この取付凸部９を前記本体２に設けられた取付凹部２ａの断面形状と合致する断面三角形状の角柱形状として、前記本体２に対して回り止め状態に連結し得るように構成している。
【００４１】
また、この第二連結体５に設けた取付凸部９は、その各角部９ａ同士の間に位置する周面９ｂを内方軸芯方向に落ち込んだ状態の凹湾曲面としている。
【００４２】
従って、本体２の取付凹部２ａに対して第二連結体５の取付凸部９が当接する表面積を大きくすることができる。
【００４３】
また、第一連結体３内にしてカム部４と第一連結体３の一端閉塞部３ａとの間にはカム部４を係合方向に付勢するコイルバネ７を係合付勢機構として設けている。
【００４４】
従って、以上の構成からなるヒンジ装置Ａは、このカム部４とカム係合部６とが係合状態のとき表示体１と本体２とが回動ロックされ、本体２に対する表示体１の開閉回動に伴い、このカム部４とカム係合部６とが係脱するとともに、このカム部４とカム係合部６とが係合していない状態から係合しようとする相対回動付勢力が生じることになる。
【００４５】
本実施例は上述のように構成したから、第一連結体３の内面長さ方向に形成された係止条１１にガイドさせてカム部４をスライドさせる構成であるから、つまり、カム部４をガイドする部位を比較的成形精度の出し易い直線状の係止条１１を形成することで構成したから、カム部４の良好なスライド機能と良好な回り止め機能とを達成し得る高品位な製品が簡易且つ確実に得られることになり、よって、第一連結体３内でカム部４がガタつくのを可及的に抑制することができ、第二部材２に対して第一部材１を回動させた際における雑音が可及的に抑制されることになる。
【００４６】
また、本実施例は、第二連結体５に第二部材２に設けた取付凹部２ａに回り止め状態に嵌挿連結し得る取付凸部９を設け、この取付凸部９を前記第二部材２の取付凹部２ａの断面形状と合致する断面多角形状として、前記第二部材２に対して第二連結体５を回り止め状態に連結し得るように構成し、この取付凸部９の角部９ａ同士の間の周面９ｂを凹湾曲面としたから、第二部材２に対する第二連結体５の堅固な回り止め状態での連結が達成されるのは勿論、この第二部材２と第二連結体５との連結部位における、第二部材２に対する第一部材１の回動時に生じ得る雑音を抑制し得ることになる。
【００４７】
また、本実施例は、カム部４の周面部に設けられる凸部８をガイドする溝部１１を第一連結体３の周面長さ方向に設けて、この溝部１１にガイドされて第一連結体３内をカム部４が回り止め状態で第一連結体３の長さ方向にスライド移動自在となるように構成したから、より具体的な構成から一層秀れたスライド機能と回り止め機能とが達成され、このことからより一層の雑音防止構造となる。
【００４８】
また、本実施例は、取付凸部９の角部９ａ同士の間の周面９ｂを平坦面ではなく内方に湾曲する凹湾曲面としたから、第二部材２の取付凹部２ａと第二連結体５の取付凸部９との当接する表面積が確実に大きくなり、このことからより一層の雑音防止構造となる。
【００４９】
また、本実施例は、取付凸部９を断面三角形状とし、この前記取付凸部９の角部９ａ同士の間の周面９ｂを平坦面ではなく内方に湾曲する凹湾曲面としたから、精度の高い成形と連結強度とを両立することになり、このことからより一層の雑音防止構造となる。
【００５０】
尚、本発明は、本実施例に限られるものではなく、各構成要件の具体的構成は適宜設計し得るものである。
【００５１】
【発明の効果】
本発明は上述のように構成したから、第一連結体内でカム部がガタつくのを可及的に抑制することができ、第二部材に対して第一部材を回動させた際における雑音が可及的に抑制されることになるなど極めて商品価値の高い画期的なヒンジ装置となる。
【００５２】
また、請求項２記載の発明においては、第二部材に対する第二連結体の堅固な回り止め状態での連結が達成されるのは勿論、この第二部材と第二連結体との連結部位における、第二部材に対する第一部材の回動時に生じ得る雑音を可及的に抑制し得ることになるなど極めて商品価値の高い画期的なヒンジ装置となる。
【００５３】
また、請求項４記載の発明においては、より具体的な構成から一層秀れたスライド機能と回り止め機能とが達成され、このことからより一層の雑音防止構造となるなど極めて商品価値の高い画期的なヒンジ装置となる。
【００５４】
また、請求項５記載の発明においては、第二部材の取付凹部と第二連結体の取付凸部との当接する表面積が確実に大きくなり、このことからより一層の雑音防止構造となるなど極めて商品価値の高い画期的なヒンジ装置となる。
【００５５】
また、請求項６記載の発明においては、精度の高い成形と連結強度とを両立することになり、このことからより一層の雑音防止構造となるなど極めて商品価値の高い画期的なヒンジ装置となる。
【００５６】
また、請求項７，８記載の発明においては、最良の機能を発揮する画期的なヒンジ装置を具備した電子機器となる。
【図面の簡単な説明】
【図１】本実施例の使用状態説明図である。
【図２】本実施例の分解斜視図である。
【図３】本実施例に係る要部の説明断面図である。
【図４】本実施例に係る要部の説明断面図である。
【図５】本実施例を説明する斜視図である。
【図６】本実施例に係る要部の概略動作説明図である。
【符号の説明】
１　第一部材
２　第二部材
２ａ　取付凹部
３　第一連結体
４　カム部
５　第二連結体
６　カム係合部
７　係合付勢機構
８　凸部
９　取付凸部
９ａ　角部
９ｂ　周面
１１　係止条・溝部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hinge device and an electronic device using the hinge device.
[0002]
Problems to be solved by the prior art and the invention
For example, in a mobile phone as a typical example of a mobile electronic device, a folding type in which a display body having a display screen is foldably attached to a mobile phone device main body, and a display screen is provided on the mobile phone main body itself. There is an integrated type provided.
[0003]
The integrated type is said to be excellent in terms of weight reduction and convenience, while the folding type is said to be excellent in terms of prevention of switch malfunction, downsizing, and variety of designs.
[0004]
In the folding type, the main body and the display body are pivotally connected via a hinge device.
[0005]
Specifically, this hinge device is provided with a cam portion 4 on a first connecting member 3 connected to the display 1 in a non-rotating state, and a cam portion 4 on a second connecting member 5 connected to the main body 2 in a non-rotating state. A cam engaging portion for engaging the display body and the body when the cam portion is engaged with the cam engaging portion; The cam portion 4 is slidably provided in the engagement / disengagement direction with respect to the engagement portion 6, and an engagement urging mechanism 7 for urging the cam portion 4 in the engagement direction is provided on the first coupling body 3. The cam portion 4 and the cam engaging portion 6 are configured to be disengageable with the relative rotation of the display body 1 and the second member 2. The configuration is such that a relative rotation urging force that attempts to engage from a state where the portion 6 is not engaged is generated. The same components as those of the present embodiment are denoted by the same reference numerals.
[0006]
By the way, it has been pointed out that the conventional hinge device has a problem that when the display body 1 is actually opened and closed with respect to the main body 2, noise is generated due to rattling.
[0007]
The present applicant has paid attention to the problem of noise generated when the hinge device rotates, and as a result of repeatedly performing various experiments, an innovative hinge device having extremely high commercial value and an electronic device using the hinge device have been developed. developed.
[0008]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0009]
A hinge device for pivotally connecting a first member (1) and a second member (2), wherein a cam portion (4) is provided on a first connector (3) connected to the first member (1) in a detent state, and the second member (2) is prevented from rotating. A cam engaging portion 6 is provided on the second connecting member 5 for engaging the cam portion 4 when the first member 1 and the second member 5 are in the engaged state. The cam member 4 is configured to be rotatably locked with the member 2, and the cam portion 4 is slidably movable in the engagement / disengagement direction with respect to the cam engagement portion 6. A biasing engagement urging mechanism 7 is provided on the first connecting member 3, and the cam portion 4 and the cam engaging portion 6 are disengaged with the relative rotation between the first member 1 and the second member 2. And the cam portion 4 and the cam engaging portion 6 generate a relative rotational urging force to be engaged from the disengaged state. In the hinge device configured as described above, the first connecting member 3 is formed of a cylindrical body capable of housing the cam portion 4 and provided on the peripheral surface of the cam portion 4 in the length direction of the inner surface of the first connecting member 3. The protrusions 8 or the recesses are provided with locking ridges 11 that are unevenly locked. The cams 4 are guided by the locking ridges 11 so that the cams 4 do not rotate in the first connecting body 3 so as to prevent the first connecting body 3 from rotating. The present invention relates to a hinge device which is configured to be slidable in a length direction.
[0010]
Further, in a hinge device for pivotally connecting the first member 1 and the second member 2, a cam portion 4 is provided on a first connecting body 3 which is connected to the first member 1 in a detent state, and the second member 2 is provided with a cam portion 4. The second connector 5 connected in a non-rotating state is provided with a cam engaging portion 6 that engages with the cam portion 4. When the cam portion 4 and the cam engaging portion 6 are in the engaged state, the first member 1 The second member 2 is configured to be rotationally locked, and the cam portion 4 is provided so as to be slidable with respect to the cam engaging portion 6 in a direction in which the second member 2 is engaged and disengaged. The first connecting member 3 is provided with an engaging urging mechanism 7 that urges the cam portion 4 and the cam engaging portion 6 with the relative rotation of the first member 1 and the second member 2. In addition to being configured so as to be disengageable, a relative rotational urging force that attempts to engage from a state where the cam portion 4 and the cam engaging portion 6 are not engaged. In the hinge device configured to be formed, a mounting projection 9 that can be fitted and connected to the mounting recess 2a provided in the second member 2 in a non-rotating state is provided on the second connector 5, and the mounting projection 9 is The second protrusion 2 is configured to be able to connect the second connecting member 5 to the second member 2 in a detent state as a polygonal cross-section that matches the cross-sectional shape of the mounting recess 2a of the second member 2. The present invention relates to a hinge device characterized in that a peripheral surface 9b between the corners 9a of the 9 is a concavely curved surface.
[0011]
Further, in a hinge device for pivotally connecting the first member 1 and the second member 2, a cam portion 4 is provided on a first connecting body 3 which is connected to the first member 1 in a detent state, and the second member 2 is provided with a cam portion 4. The second connector 5 connected in a non-rotating state is provided with a cam engaging portion 6 that engages with the cam portion 4. When the cam portion 4 and the cam engaging portion 6 are in the engaged state, the first member 1 The second member 2 is configured to be rotationally locked, and the cam portion 4 is provided so as to be slidable with respect to the cam engaging portion 6 in a direction in which the second member 2 is engaged and disengaged. The first connecting member 3 is provided with an engaging urging mechanism 7 that urges the cam portion 4 and the cam engaging portion 6 with the relative rotation of the first member 1 and the second member 2. In addition to being configured so as to be disengageable, a relative rotational urging force that attempts to engage from a state where the cam portion 4 and the cam engaging portion 6 are not engaged. In the hinge device configured to be formed, the first connecting member 3 is formed of a cylindrical body capable of storing the cam portion 4, and the first connecting member 3 is formed on the peripheral surface of the cam portion 4 in the length direction of the inner surface of the first connecting member 3. A locking ridge 11 for locking the provided convex portion 8 or concave portion with unevenness is provided, and the cam portion 4 is guided by the locking ridge 11 so as to be slidable in the first connecting member 3 in a detented state. The second connecting member 5 is provided with a mounting projection 9 that can be fitted and connected to the mounting recess 2a provided in the second member 2 in a non-rotating state, and the mounting projection 9 is attached to the second member 5. 2 is formed so as to be able to connect the second connecting member 5 to the second member 2 in a non-rotating state as a polygonal cross section that matches the cross-sectional shape of the mounting concave portion 2a. The hinge device according to claim 1, wherein the peripheral surface 9b between the adjacent 9a is a concave curved surface. It is.
[0012]
In addition, a groove 11 for guiding the convex portion 8 provided on the peripheral surface of the cam portion 4 is provided in the length direction of the peripheral surface of the first connecting member 3, and guided by the groove 11 to form the first connecting member 3. The hinge device according to any one of claims 1 and 3, wherein the cam portion (4) is configured to be slidable in the length direction of the first connecting member (3) in a state where the cam portion (4) does not rotate. It is related.
[0013]
The peripheral surface 9b between the corners 9a of the mounting projection 9 is not a flat surface but a concave curved surface that curves inward. The present invention relates to a hinge device.
[0014]
Also, the mounting projection 9 has a substantially triangular cross section, and the peripheral surface 9b between the corners 9a of the mounting projection 9 is not a flat surface but a concave curved surface that curves inward. A hinge device according to any one of claims 2, 3 and 5.
[0015]
Further, the present invention relates to an electronic device using the hinge device, wherein the hinge device according to any one of claims 1 to 6 is provided at a pivot portion.
[0016]
Further, the lid or flip as the first member 1 or the second member 2 and the main body as the second member 2 or the first member 1 overlapping with the lid or the flip can be opened and closed from the overlapping state to a predetermined opening angle. An electronic device using the hinge device according to any one of claims 1 to 7 at a pivot portion pivotally attached to the electronic device.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.
[0018]
The first member 1 and the second member 2 are rotationally locked by the engagement between the cam portion 4 and the cam engaging portion 6. Since the cam portion 4 is urged against the cam engaging portion 6 by the engaging urging mechanism 7, the rotation locked state in which the cam portion 4 is engaged with the cam engaging portion 6 is maintained. Is done.
[0019]
That is, for example, when the cam portion 4 and the cam engaging portion 6 are engaged with each other in a closed state in which the first member 1 and the second member 2 overlap, the engagement urging mechanism 7 By the engagement cam force between the cam portion 4 and the cam engagement portion 6 which are being urged and engaged, for example, the cam portion 4 and the cam engagement portion 6 are closed and urged unless the cam portion 4 is rotated to a position where it is disengaged. Become.
[0020]
By the way, according to the present invention, the first connecting member 3 is constituted by a cylindrical body capable of housing the cam portion 4, and the convex portion 8 provided on the peripheral surface portion of the cam portion 4 in the length direction of the inner surface of the first connecting member 3. Alternatively, a locking ridge 11 for locking the concave and convex portions is provided, and the cam portion 4 is guided by the locking ridge 11 in the longitudinal direction of the first connecting member 3 while the cam portion 4 is prevented from rotating. It is configured to be able to slide freely.
[0021]
This contributes to suppressing as much as possible noise generated when the relative rotation between the first member 1 and the second member 2 is pointed out in the conventionally proposed hinge device.
[0022]
That is, like the hinge device conventionally proposed, the cam portion 4 having the same cross-sectional shape as the cross-sectional shape of the first connecting member 3 is simply formed along the inner peripheral surface of the cylindrical first connecting member 3. In the case of a configuration in which the slide movement is performed in the detent state, if the cam part 4 can be smoothly slid in the first connecting member 3 and a good detent is to be achieved, very high precision is required. Although high molding is required, this is practically impossible. In addition, since the cam portion 4 is a resin molded product, the cam portion 4 deteriorates with time and becomes thinner. A gap is generated between the peripheral surface and the peripheral surface.
[0023]
Therefore, in the hinge device proposed conventionally, when the first member 1 is rotated with respect to the second member 2, the cam portion 4 rotates in the first connecting body 3, and the noise is generated by rattling. ing.
[0024]
In this regard, the present invention has a configuration in which the cam portion 4 is slid by being guided by the locking streak 11 formed in the length direction of the inner surface of the first connecting body 3, that is, a portion for guiding the cam portion 4 is provided. Since it is constituted by forming the linear locking strip 11 which is relatively easy to obtain the molding accuracy, a high-quality product which can achieve a good sliding function and a good detent function of the cam portion 4 can be simply and reliably formed. Therefore, the play of the cam portion 4 in the first connecting member 3 can be suppressed as much as possible, and the first member 1 is rotated with respect to the second member 2. The noise at the time is suppressed as much as possible.
[0025]
The second connector 5 is provided with a mounting projection 9 that can be fitted and connected to the mounting recess 2a provided in the second member 2 in a non-rotating state, and this mounting projection 9 is attached to the mounting recess 2a of the second member 2. The second connecting member 5 is configured so as to be able to be connected to the second member 2 in a detent state as a polygonal cross section that matches the cross sectional shape of the mounting member 9 between the corners 9 a of the mounting projection 9. When the peripheral surface 9b is formed as a concavely curved surface, the connection of the second connecting member 5 to the second member 2 in a firmly detented state is achieved, and the second member 2 and the second connecting member The noise that can be generated when the first member 1 rotates relative to the second member 2 at the connection portion with the fifth member 5 can be suppressed.
[0026]
That is, when the peripheral surface 9b between the corners 9a of the mounting projection 9 is a concave curved surface, the mounting concave portion 2a of the second member 2 is compared with a conventional case where the peripheral surface is a flat surface. And the surface area of the second connecting body 5 in contact with the mounting projection 9 is large. Therefore, even if the mounting projection 9 to be inserted into the mounting recess 2a is thin, there are more abutting portions compared to conventional products. Rattling is less likely to occur, so that noise is suppressed as much as possible.
[0027]
Further, a groove 11 for guiding the convex portion 8 provided on the peripheral surface of the cam portion 4 is provided in the longitudinal direction of the peripheral surface of the first connecting member 3, and guided by the groove 11, the cam inside the first connecting member 3 is moved. When the portion 4 is configured to be slidable in the length direction of the first connector 3 in the detent state, a more excellent sliding function and detent function from a more specific configuration are achieved. This results in a further noise prevention structure.
[0028]
When the peripheral surface 9b between the corners 9a of the mounting projection 9 is not a flat surface but a concave curved surface that curves inward, the mounting recess 2a of the second member 2 and the second connector 5 The surface area that comes into contact with the mounting projection 9 surely increases, which results in a further noise prevention structure.
[0029]
When the mounting projection 9 has a triangular cross section and the peripheral surface 9b between the corners 9a of the mounting projection 9 is not a flat surface but a concave curved surface that curves inward, the accuracy is high. High molding and connection strength are compatible.
[0030]
Specifically, for example, when the cross-sectional shape of the mounting projection 9 is hexagonal or octagonal, the diameter of the projection can be increased accordingly, so that a strong connection strength can be obtained. If the number of corners increases, it becomes difficult to obtain high molding accuracy, resulting in a connection structure in which play is likely to occur and noise is likely to occur. However, if a simple plate shape is used with priority given to high molding accuracy, a strong connection strength cannot be obtained.
[0031]
In this regard, by setting the cross-sectional shape of the mounting projection 9 to a triangular cross-section, it is relatively easy to obtain molding accuracy and a strong connection strength can be obtained. Will be achieved.
[0032]
【Example】
A specific embodiment of the present invention will be described with reference to the drawings.
[0033]
This embodiment shows a case where the present invention is applied to a foldable mobile phone as shown in FIG. 1, in which a display having a display screen is a first member 1 and a main body having an operation section is a second member. The hinge device A according to the present invention has a pivotable structure that allows the display body 2 to be turned into an open state (communication state) in which the display body 2 is rotated to, for example, 120 degrees from the closed state in which the display body 1 overlaps the main body 2. Has been applied.
[0034]
In this embodiment, the mounting recess 1a is provided at the base of the display body 1, and the mounting recess 2a adjacent to the mounting recess 1a in communication with the mounting recess 1a is also provided at the base of the main body 2, and the mounting recesses 1a, 2a are provided in the respective mounting recesses 1a, 2a. The hinge device A of the present invention configured as a shaft-shaped part is configured to be mounted.
[0035]
More specifically, as shown in the figure, the display body 1 is formed of a metal tubular body (casing) having a detent shape with respect to the mounting recess 1 a as a first connection body 3. The first connecting member 3 is formed in a substantially elliptical cross-section (an oval shape), and has a cross-sectional shape that matches the cross-sectional shape of the first connecting member 3. The mounting recess 1a provided in the display 1 is also formed to have a substantially elliptical cross section.
[0036]
The first connecting member 3 has a pair of grooves 11 formed in the longitudinal direction of the front and back surfaces. It is configured. The locking ridges 11 are not limited to concave ridges as in this embodiment, but may be convex ridges. In the case of this convex ridge, the cam portion 4 is provided with a concave portion.
[0037]
The first connector 3 is provided with a synthetic resin cam portion 4 having a concave portion 4a at a position opposing the end portion, and the cam portion 4 is formed to have a substantially elliptical cross section. A pair of protrusions 8 are formed on the front and back surfaces, and each of the protrusions 8 is guided by each locking streak 11 formed in the length direction of the first connection body 3 so that the inside of the first connection body 3 is formed. It is slidably movable and provided in a detent state.
[0038]
Further, a shaft member 10 is formed through the first connector 3, and the cam portion 4 is slidably and rotatably fitted on the shaft member 10. A second connecting body 5 made of synthetic resin is provided at an end portion via a fastening pin 12, and a pair of convex portions 6 a that engages with the concave portion 4 a of the cam portion 4 inside and inside the second connecting body 5. Is provided.
[0039]
Therefore, the cam portion 4 that slides in the first connecting member 3 is slidable with respect to the engagement cam portion 6 in the engagement / disengagement direction.
[0040]
The second connector 5 is provided at its end with a mounting projection 9 which can be fitted and connected to a mounting recess 2 a provided at the base of the main body 2. The mounting projection 9 is provided on the main body 2. The mounting recess 2a is formed in a prismatic shape having a triangular cross-section that matches the cross-sectional shape of the mounting recess 2a so that it can be connected to the main body 2 in a detent state.
[0041]
The mounting projection 9 provided on the second connector 5 has a concave curved surface in which the peripheral surface 9b located between the corners 9a is lowered in the inner axial direction.
[0042]
Therefore, it is possible to increase the surface area where the mounting projection 9 of the second connector 5 comes into contact with the mounting recess 2 a of the main body 2.
[0043]
Further, a coil spring 7 for urging the cam portion 4 in the engaging direction is provided as an engagement urging mechanism between the cam portion 4 and the one-end closing portion 3a of the first coupling member 3 inside the first coupling member 3. ing.
[0044]
Therefore, in the hinge device A having the above configuration, when the cam portion 4 and the cam engaging portion 6 are in the engaged state, the display 1 and the main body 2 are rotationally locked, and the opening and closing of the display 1 with respect to the main body 2 is performed. With the rotation, the cam portion 4 and the cam engaging portion 6 are disengaged and disengaged, and the cam portion 4 and the cam engaging portion 6 attempt to engage from a disengaged state. There will be power.
[0045]
Since the present embodiment is configured as described above, the cam portion 4 is slid by being guided by the locking streak 11 formed in the length direction of the inner surface of the first connecting member 3, that is, the cam portion 4 is slid. Is formed by forming the linear locking streak 11 which is relatively easy to obtain the molding accuracy, so that the cam portion 4 can achieve a good sliding function and a good detent function. The product can be obtained easily and reliably, so that the rattling of the cam portion 4 in the first connecting member 3 can be suppressed as much as possible. Is suppressed as much as possible.
[0046]
In this embodiment, the second connector 5 is provided with a mounting projection 9 which can be fitted and connected to the mounting recess 2a provided in the second member 2 in a non-rotating state. 2 is formed so as to be able to connect the second connecting member 5 to the second member 2 in a non-rotating state as a polygonal cross section that matches the cross-sectional shape of the mounting concave portion 2a. Since the peripheral surface 9b between the members 9a is a concavely curved surface, the connection of the second connector 5 to the second member 2 in a firmly detented state is achieved, and the second member 2 and the It is possible to suppress noise that can be generated when the first member 1 rotates with respect to the second member 2 at the connection portion with the two connection members 5.
[0047]
In the present embodiment, a groove 11 for guiding the convex portion 8 provided on the peripheral surface of the cam portion 4 is provided in the circumferential direction of the peripheral surface of the first connecting member 3, and guided by the groove 11 for the first connection. Since the cam portion 4 is configured to be slidable in the length direction of the first connecting member 3 in the body 3 in a detented state in the body 3, the sliding function and the detent function are more excellent from a more specific configuration. Is achieved, which results in a further noise prevention structure.
[0048]
In this embodiment, since the peripheral surface 9b between the corners 9a of the mounting projection 9 is not a flat surface but a concave curved surface that curves inward, the mounting recess 2a of the second member 2 and the second The surface area of the connecting body 5 in contact with the mounting projection 9 is surely increased, which results in a further noise prevention structure.
[0049]
In this embodiment, the mounting projection 9 has a triangular cross section, and the peripheral surface 9b between the corners 9a of the mounting projection 9 is not a flat surface but a concave curved surface that curves inward. Thus, both high-precision molding and connection strength can be achieved, which results in a further noise prevention structure.
[0050]
It should be noted that the present invention is not limited to the present embodiment, and a specific configuration of each component can be appropriately designed.
[0051]
【The invention's effect】
Since the present invention is configured as described above, rattling of the cam portion in the first connecting member can be suppressed as much as possible, and noise generated when the first member is rotated with respect to the second member. Is suppressed as much as possible.
[0052]
According to the second aspect of the present invention, the connection of the second connector to the second member in a firmly detented state is achieved, and of course, at the connection portion between the second member and the second connector. In addition, it is possible to suppress as much as possible noise generated when the first member rotates with respect to the second member.
[0053]
Further, in the invention according to the fourth aspect, a more excellent slide function and a detent function are achieved from a more specific configuration, and as a result, an image with extremely high commercial value is obtained, such as a further noise prevention structure. It is a new hinge device.
[0054]
Further, in the invention according to claim 5, the surface area in which the mounting concave portion of the second member and the mounting convex portion of the second connector come into contact with each other is surely increased, which results in a further noise prevention structure. An innovative hinge device with high commercial value.
[0055]
Further, in the invention according to the sixth aspect, it is possible to achieve both high precision molding and connection strength, and from this, it is possible to obtain an extremely high commercial value and an epoch-making hinge device having a further noise prevention structure. Become.
[0056]
According to the seventh and eighth aspects of the present invention, there is provided an electronic device having an innovative hinge device exhibiting the best function.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a use state of the present embodiment.
FIG. 2 is an exploded perspective view of the present embodiment.
FIG. 3 is an explanatory sectional view of a main part according to the embodiment.
FIG. 4 is an explanatory sectional view of a main part according to the embodiment.
FIG. 5 is a perspective view illustrating this embodiment.
FIG. 6 is a schematic operation explanatory view of a main part according to the present embodiment.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 first member 2 second member 2 a mounting recess 3 first connecting body 4 cam portion 5 second connecting body 6 cam engaging portion 7 engagement urging mechanism 8 convex portion 9 mounting convex portion 9 a corner portion 9 b peripheral surface 11 Stops and grooves

Claims

A hinge device for pivotally connecting a first member and a second member, wherein a cam portion is provided on a first connection body connected to the first member in a detent state, and a second member is connected to the second member in a detent state. The connecting body is provided with a cam engaging portion that engages with the cam portion, and the first member and the second member are configured to be rotationally locked when the cam portion and the cam engaging portion are engaged. The cam portion is provided slidably with respect to the cam engaging portion so as to be slidable in the direction of engagement and disengagement, and an engagement urging mechanism for urging the cam portion in the engagement direction is provided on the first connector, With the relative rotation of the first member and the second member, the cam portion and the cam engaging portion are configured to be disengageable, and the cam portion and the cam engaging portion are engaged. A hinge device configured to generate a relative rotational urging force that is to be engaged from a non-engaged state. Is constituted by a cylindrical body capable of storing the cam portion, and provided with a locking streak in which a convex portion or a concave portion provided on the peripheral surface portion of the cam portion in the length direction of the inner surface of the first connected body is unevenly locked. A hinge device wherein the cam portion is guided by the locking streak so as to be slidable in the longitudinal direction of the first connecting member in a state in which the cam portion is prevented from rotating.

A hinge device for pivotally connecting a first member and a second member, wherein a cam portion is provided on a first connection body connected to the first member in a detent state, and a second member is connected to the second member in a detent state. The connecting body is provided with a cam engaging portion that engages with the cam portion, and the first member and the second member are configured to be rotationally locked when the cam portion and the cam engaging portion are engaged. The cam portion is provided slidably with respect to the cam engaging portion so as to be slidable in the direction of engagement and disengagement, and an engagement urging mechanism for urging the cam portion in the engagement direction is provided on the first connector, With the relative rotation of the first member and the second member, the cam portion and the cam engaging portion are configured to be disengageable, and the cam portion and the cam engaging portion are engaged. A hinge device configured to generate a relative rotational urging force that is to be engaged from a non-engaged state. The mounting concave portion provided in the second member is provided with a mounting convex portion that can be fitted and connected in a non-rotating state in the mounting concave portion, and the mounting convex portion is a polygonal cross-sectional shape that matches the cross-sectional shape of the mounting concave portion of the second member. A hinge device wherein a second connecting body can be connected to a second member in a detented state, and a peripheral surface between corners of the mounting projection is a concave curved surface.

A hinge device for pivotally connecting a first member and a second member, wherein a cam portion is provided on a first connection body connected to the first member in a detent state, and a second member is connected to the second member in a detent state. The connecting body is provided with a cam engaging portion that engages with the cam portion, and the first member and the second member are configured to be rotationally locked when the cam portion and the cam engaging portion are engaged. The cam portion is provided slidably with respect to the cam engaging portion so as to be slidable in the direction of engagement and disengagement, and an engagement urging mechanism for urging the cam portion in the engagement direction is provided on the first connector, With the relative rotation of the first member and the second member, the cam portion and the cam engaging portion are configured to be disengageable, and the cam portion and the cam engaging portion are engaged. A hinge device configured to generate a relative rotational urging force that is to be engaged from a non-engaged state. Is constituted by a cylindrical body capable of storing the cam portion, and provided with a locking streak in which a convex portion or a concave portion provided on the peripheral surface portion of the cam portion in the length direction of the inner surface of the first connected body is unevenly locked. The cam portion is configured to be slidably movable in the first connection body in a detented state guided by the locking streak, and is prevented from rotating in the mounting recess provided in the second member in the second connection member. A mounting projection that can be inserted and connected to the second member is provided, and the mounting projection is formed in a polygonal cross section that matches the cross-sectional shape of the mounting recess of the second member. And a peripheral surface between the corners of the mounting projection is formed as a concave curved surface.

A groove for guiding a convex portion provided on the peripheral surface of the cam portion is provided in the peripheral surface length direction of the first connector, and the cam is guided by the groove to prevent the cam portion from rotating in the first connector. The hinge device according to claim 1, wherein the hinge device is configured to be slidable in a length direction of the first connecting member.

The hinge device according to claim 2, wherein a peripheral surface between the corners of the mounting protrusion is not a flat surface but a concave curved surface that curves inward.

4. The mounting projection according to claim 2, wherein the mounting projection has a substantially triangular cross section, and the peripheral surface between the corners of the mounting projection is not a flat surface but a concave curved surface that curves inward. The hinge device according to any one of claims 1 and 5,

An electronic device using a hinge device, wherein the hinge device according to any one of claims 1 to 6 is provided at a pivot portion.

A pivotal connection for pivotally connecting the lid or the flip as the first member or the second member and the main body as the second member or the first member overlapping with the lid so that the lid can be opened and closed from a superposed state to a predetermined opening angle. An electronic device using a hinge device according to any one of claims 1 to 7 as a part.