JP2004259336A

JP2004259336A - Disk player

Info

Publication number: JP2004259336A
Application number: JP2003046926A
Authority: JP
Inventors: Tsuyoshi Kurita; 剛志栗田
Original assignee: Funai Electric Co Ltd
Current assignee: Funai Electric Co Ltd
Priority date: 2003-02-25
Filing date: 2003-02-25
Publication date: 2004-09-16
Anticipated expiration: 2023-02-25
Also published as: JP3752688B2

Abstract

<P>PROBLEM TO BE SOLVED: To linearly advance and retreat a tray without tilting the same. <P>SOLUTION: In the disk player constituted to advance the tray 2 by receiving an unloading signal in a loading state and to carry out the operation reverse to the above by receiving a loading signal, an approximately L-shaped pressing piece 24 elastically displaceable to a synthetic resin top plate 17 integrally formed between both side plate sections 3 of a casing 1 is cut and left by forming a slit 23 in one side part of the top plate 17 and the lower end 24a of the pressing piece 24 is brought into elastic contact with the top surface at one side edge 2a of the tray 2 by positioning the lower end 24a of the pressing piece 24 lower than the top surface of the one side edge 3a of the tray 2 facing the lower end 24a by the prescribed spacing t. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、ＣＤやＤＶＤなどの光ディスクや光磁気ディスク（以下、ディスクと略称する）の再生や記録または消去を行うためのディスクプレーヤに関する。
【０００２】
【従来の技術】
従来、ディスクプレーヤの技術として特許文献１などに記載したものがあり、その一例を図８から図１１に基づいて説明すると、これは、合成樹脂からなる筐体１とトレイ２とを有し、前記筐体１が、左右一対の側板部３と、該両側板部３間に一体形成した前後２つの横桁部４ａ，４ｂとからなり、各側板部３の内側面に突設した受台５上に左右一対のガイド部材６，７が前後進ａ，ｂ方向に沿って突設されている。また、トレイ２の一側縁２ａの下面に略Ｕ字状ガイド溝８が形成されると共に、該トレイ２の他側縁２ｂの下面に略Ｌ字状ガイド溝９が形成され、その各ガイド溝８，９が前記各ガイド部材６，７に嵌合され、トレイ２の一側縁２ａ近傍の下面に前後進ａ，ｂ方向に沿ってラック１０が形成され、該ラック１０に対向して前側横桁部４ａにピニオン１１が設けられている。なお、１２は各側板部３に突設した浮き上がり防止片である。
【０００３】
また、前記トレイ２の下方に、ターンテーブル１３及び光ピックアップ１４を搭載したドライブシャーシ１５が後端部の枢支軸１６を中心に上下動ｃ，ｄ可能に配置され、ターンテーブル１３に対向して筐体１の両側板部３間に一体形成した合成樹脂製天板１７の中央収納部１８に磁石１９付きディスクホルダ２０が昇降可能に配置されている。なお、２１は前側横桁部４ａにスライド可能に配置したカム板であって、そのカム板２１に形成したカム溝２１ａにドライブシャーシ１５から前方に突出するカム軸１５ａが嵌入されている。
【０００４】
アンローディング操作を説明すると、図８実線及び図９に示すように、ディスクＤをターンテーブル１３とディスクホルダ２０とで挟持しているローディング状態でアンローディング信号を受信することにより、カム板２１をスライドさせることにより、カム溝２１ａ及びカム軸１５ａを介してドライブシャーシ１５が下動ｃされ、ターンテーブル１３上のディスクＤをトレイ２上に載置した後、ラック１０に噛合するピニオン１１を正転ｅさせて該ラック１０を介してトレイ２を前進ａさせる（図８仮想線及び図１１参照）。ローディング操作の場合には、ローディング信号を受信することにより、ピニオン１１を逆転ｆさせて上記とは逆の操作を行う。
【０００５】
【特許文献１】
特開２００１−３４４８８５号公報
【０００６】
【発明が解決しようとする課題】
上記従来の構成では、筐体１及びトレイ２を安価に量産するために合成樹脂で成形しており、その形成歪みなどを考慮して、略Ｕ字状ガイド溝８とそれに嵌入するガイド部材６との間に若干の隙間を形成して、トレイ２の前後進ａ，ｂを円滑に行うようにしているため、アンローディング信号に基づいてトレイ２を前進ａさせたときに、該トレイ２が自重で下向きにわずかの角度βであるが傾いたり（図１１仮想線参照）、ピニオン１１の正転ｅ方向への回転力によりトレイ２がわずかの角度αであるが横向きに傾いて（図８仮想線参照）、外観上の体裁が悪い。また、ローディング信号に基づいてトレイ２を後進ｂさせたときに、トレイ２の傾きが修正され、その修正の際に、トレイ２が上下動したり横揺れして雑音が生じ、ユーザに不快感を与える。
【０００７】
本発明は、上記従来の欠点に鑑み、トレイを傾かせることなく直線的に前後進させるようにしたディスクプレーヤを提供することを目的としている。
【０００８】
【課題を解決するための手段】
上記目的を達成するため、請求項１に記載の発明は、合成樹脂製筐体の両側板部に設けた受台に左右一対のガイド部材が前後方向に沿って突設され、合成樹脂製トレイの下面両側縁に形成した各ガイド溝をそれぞれ前記各ガイド部材に嵌合させることにより、該トレイが筐体に前後進可能に配置され、前記トレイの下面に前後方向に沿ってラックが形成されると共に、該ラックに対向して筐体にピニオンが設けられ、前記トレイの下方に、ターンテーブル及び光ピックアップを搭載したドライブシャーシが後端部の枢支軸を中心に上下動可能に配置され、前記ターンテーブルに対向して筐体の両側板部間に一体形成した合成樹脂製天板の中央収納部にディスクホルダが昇降可能に配置されており、ディスクをターンテーブルとディスクホルダとで挟持しているローディング状態でアンローディング信号を受信することにより、ドライブシャーシが下動してターンテーブル上のディスクをトレイ上に載置した後、ラックに噛合するピニオンを正転させて該ラックを介してトレイを前進させ、ローディング信号を受信することによりピニオンを逆転させて上記とは逆の操作を行うようにしたディスクプレーヤにおいて、前記天板の一側部にスリットを形成することにより該天板に弾性変位可能な略Ｌ字状押さえ片が切り残され、該押さえ片の下端をそれに対向するトレイの一側縁上面よりも所定間隔だけ低く位置決めすることにより、その押さえ片の下端がトレイの一側縁上面に弾性的に接触され、前記筐体の両側板部間に一体形成した前後２つの横桁部のうちの前側横桁部に略Ｊ字状弾性板が一体突設されると共に、該弾性板の先端側面に円弧状突起部が一体突設されており、該円弧状突起部を略Ｕ字状に形成した前記一方のガイド溝に挿入して該円弧状突起部の円弧面を該ガイド溝の一側面に弾性的に押し付けることにより、そのガイド溝の他側面をガイド部材の側面に接触させるようにしたことを特徴としている。
【０００９】
上記構成は実施の一形態（図１から図７参照）に対応するものであって、これによれば、弾性変位可能な略Ｌ字状押さえ片の下端がトレイの一側縁上面に弾性的に接触されているから、該トレイが前進の際に自重で下向きに傾くことが無くなり、外観上の体裁が良好であると共に、そのトレイが後進の際に上下動することも無くなり、トレイを静かに前後進させることができる。
【００１０】
また、弾性板の先端をガイド溝の一側面に弾性的に押し付けることにより、該ガイド溝の他側面をガイド部材の側面に接触させているから、その接触面を基準線にしてトレイを直線的に前後進させることができ、これによって、従来のように前進するトレイを横向きに傾かせることも無く、後進するトレイを横揺れさせたり雑音を発生させることも無いから、外観上の体裁が良好でトレイを静かに前後進させることができる。
【００１１】
更に、弾性板が略Ｊ字状に形成されているので、該弾性板の先端をトレイに押し付けることにより、その弾性板を全体的に撓ませて所定の弾性力を発生させ、その弾性力によりトレイをいずれか一方のガイド部材の側面に確実に接触させることができる。
【００１２】
また更に、弾性板の先端側面に円弧状突起部を一体突設することにより、該弾性板の先端部を太くしているので、その太くした先端部を介して弾性板からトレイに対して弾性力を確実に伝達することができると共に、前記円弧状突起部の円弧面を略Ｕ字状ガイド溝の一側面に線接触させることによりその接触抵抗を小さくしているから、該円弧状突起部がトレイの前後進に大きな障害となるおそれがなく、そのトレイをスムーズに前後進させることができる。
【００１３】
しかも、押さえ片及び弾性板を形成するにあたって、既存の筐体に若干の加工を施すだけでよく、また、既存のトレイをそのまま利用することができるから、経済的である。
【００１４】
請求項２に記載の発明は、合成樹脂製筐体の両側板部に設けた受台に左右一対のガイド部材が前後方向に沿って突設され、合成樹脂製トレイの下面両側縁に形成した各ガイド溝をそれぞれ前記各ガイド部材に嵌合させることにより、該トレイが筐体に前後進可能に配置され、前記トレイの下面に前後方向に沿ってラックが形成されると共に、該ラックに対向して筐体にピニオンが設けられており、ローディング状態でアンローディング信号を受信することにより、ラックに噛合するピニオンを正転させて該ラックを介してトレイを前進させ、ローディング信号を受信することによりピニオンを逆転させて上記とは逆の操作を行うようにしたディスクプレーヤにおいて、前記両側板部間に一体形成した合成樹脂製天板の一側部にスリットを形成することにより該天板に弾性変位可能な略Ｌ字状押さえ片が切り残され、該押さえ片の下端をそれに対向するトレイの一側縁上面よりも所定間隔だけ低く位置決めすることにより、その押さえ片の下端がトレイの一側縁上面に弾性的に接触されるようにしたことを特徴としている。
【００１５】
上記構成によれば、弾性変位可能な略Ｌ字状押さえ片の下端がトレイの一側縁上面に弾性的に接触されているから、該トレイが前進の際に自重で下向きに傾くことが無くなり、外観上の体裁が良好であると共に、そのトレイが後進の際に上下動することも無くなり、トレイを静かに前後進させることができる。
【００１６】
請求項３に記載の発明は、請求項２に記載の発明において、前記筐体の前側に弾性板が一体突設されており、該弾性板の先端をトレイに弾性的に押し付けることにより、該トレイをいずれか一方のガイド部材の側面に接触させるようにしたことを特徴としている。
【００１７】
上記構成によれば、弾性板の先端をトレイに弾性的に押し付けることにより、該トレイをいずれか一方のガイド部材の側面に接触させているから、その接触面を基準線にしてトレイを前後進させることができ、これによって、従来のように前進するトレイを横向きに傾かせることも無く、後進するトレイを横揺れさせたり雑音を発生させることもないから、外観上の体裁が良好で、トレイを静かに前後進させることができる。
【００１８】
請求項４に記載の発明は、請求項３に記載の発明において、前記弾性板が略Ｊ字状に形成されていることを特徴としている。
【００１９】
上記構成によれば、弾性板が略Ｊ字状に形成されているので、該弾性板の先端をトレイに押し付けることにより、その弾性板を全体的に撓ませて所定の弾性力を発生させ、その弾性力によりトレイをいずれか一方のガイド部材の側面に確実に接触させることができる。
【００２０】
請求項５に記載の発明は、請求項３または４に記載の発明において、前記弾性板の先端側面に円弧状突起部が一体突設されており、該円弧状突起部の円弧面をトレイに弾性的に押し付けるようにしたことを特徴としている。
【００２１】
上記構成によれば、弾性板の先端側面に円弧状突起部を一体突設することにより、該弾性板の先端部を太くしているので、その太くした先端部を介して弾性板からトレイに対して弾性力を確実に伝達することができると共に、前記円弧状突起部の円弧面をトレイに線接触させることによりその接触抵抗を小さくしているから、該円弧状突起部がトレイの前後進に大きな障害となるおそれがなく、そのトレイをスムーズに前後進させることができる。
【００２２】
請求項６に記載の発明は、請求項５に記載の発明において、前記円弧状突起部を略Ｕ字状に形成した前記一方のガイド溝に挿入して該円弧状突起部の円弧面を該ガイド溝の一側面に弾性的に押し付けることにより、そのガイド溝の他側面をガイド部材の側面に接触させるようにしたことを特徴としている。
【００２３】
上記構成によれば、トレイの下面に形成した既存の略Ｕ字状ガイド溝を利用して、該略Ｕ字状ガイド溝の一側面に弾性板の円弧状突起部の円弧面を押し付けるようになっており、既存のトレイをそのまま利用することができるから、経済的である。
【００２４】
【発明の実施の形態】
図１から図３は本発明の実施の一形態であるディスクプレーヤを示すものであって、合成樹脂製筐体１の両側板部３間に一体形成した合成樹脂製天板１７の一側部にスリット２３を形成することにより該天板１７に弾性変位可能な押さえ片２４が切り残されている。また、左右一対のガイド部材６，７が、受台５に前後進ａ，ｂ方向に所定間隔をおいて突設した複数のガイド片６Ａ，７Ａにより形成され、前側横桁部４ａの略Ｕ字状ガイド溝８に対向する箇所に矩形状貫通孔２５が貫設され、該貫通孔２５の側縁に基端を一体突設した弾性板２６の先端が略Ｕ字状ガイド溝８に挿入されている。上記以外の構成は図８から図１１に示す構成とほぼ同じであるから、同一部分に同一符号を付してその説明を省略する。
【００２５】
前記押さえ片２４は、図４に示すように、正面視略Ｌ字状であって、その下端２４ａをそれに対向するトレイ２の一側縁２ａの上面よりも所定間隔ｔだけ低く位置決めすることにより（図４仮想線参照）、その押さえ片２４の下端２４ａがトレイ２の一側縁２ａの上面に弾性的に接触されている（図４実線参照）。
【００２６】
前記弾性板２６は、図５から図７に示すように、略Ｊ字状に形成されており、その先すぼまり状先端側面に円弧状突起部２６Ａが一体突設され、該円弧状突起部２６Ａの円弧面２６ａを略Ｕ字状ガイド溝８の一側面８ａに弾性的に押し付けることにより、該略Ｕ字状ガイド溝８の他側面８ｂを各ガイド片６Ａの側面６ａに接触させている。
【００２７】
アンローディング操作を説明すると、図１に実線で示すように、ディスクＤをターンテーブル１３とディスクホルダ２０とで挟持しているローディング状態（図９参照）でアンローディング信号を受信することにより、従来例とほぼ同様の手順で、ターンテーブル１３上のディスクＤをトレイ２上に載置した後、ラック１０に噛合するピニオン１１を正転ｅさせて該ラック１０を介してトレイ２を前進ａさせる（図１仮想線参照）。このとき、押さえ片２４の下端２４ａがトレイ２の一側縁２ａの上面に接触されているので、該トレイ２を自重により下向きに傾かせることなく前進ａさせると共に、弾性板２６により略Ｕ字状ガイド溝８の他側面８ｂを各ガイド片６Ａの側面６ａに接触させているので、その接触面を基準線Ｌにしてトレイ２を横向きに傾かせることなく前進ａさせる。
【００２８】
ローディング操作の際には、図１に仮想線で示すように、トレイ２を最前進ａさせた状態で（図１１参照）、そのトレイ２上にディスクＤを載置し、ローディング信号を受信することにより、ピニオン１１を逆転ｆさせてラック１０を介してトレイ２を基準線Ｌに沿って直線的に後進ｂさせる。
【００２９】
上記構成によれば、弾性変位可能な略Ｌ字状押さえ片２４の下端２４ａがトレイ２の一側縁２ａの上面に弾性的に接触されているから、該トレイ２が前進ａの際に自重で下向きに傾くことが無くなり、外観上の体裁が良好であると共に、そのトレイ２が後進ｂの際に上下動することも無くなり、トレイ２を静かに前後進ａ，ｂさせることができる。
【００３０】
また、弾性板２６の先端をガイド溝８の一側面８ａに弾性的に押し付けることにより、該ガイド溝８の他側面８ｂを各ガイド片６Ａの側面６ａに接触させているから、その接触面を基準線Ｌにしてトレイ２を直線的に前後進ａ，ｂさせることができ、これによって、従来のように前進ａするトレイ２を横向きに傾かせることも無く、後進ｂするトレイ２を横揺れさせたり雑音を発生させることも無いから、外観上の体裁が良好で、トレイ２を静かに前後進ａ，ｂさせることができる。
【００３１】
更に、弾性板２６が略Ｊ字状に形成されているので、該弾性板２６の先端をトレイ２に押し付けることにより、その弾性板２６を全体的に撓ませて所定の弾性力を発生させ、その弾性力により略Ｕ字状ガイド溝８の他側面８ｂを各ガイド片６Ａの側面６ａに確実に接触させることができる。
【００３２】
また更に、弾性板２６の先端側面に円弧状突起部２６Ａを一体突設することにより、該弾性板２６の先端部を太くしているので、その太くした先端部を介して弾性板２６からトレイ２に対して弾性力を確実に伝達することができると共に、前記円弧状突起部２６Ａの円弧面２６ａを略Ｕ字状ガイド溝８の一側面８ａに線接触させることによりその接触抵抗を小さくしているから、該円弧状突起部２６Ａがトレイ２の前後進ａ，ｂの移動に大きな障害となるおそれがなく、そのトレイ２をスムーズに前後進ａ，ｂさせることができる。
【００３３】
しかも、押さえ片２４及び弾性板２６を形成するにあたって、既存の筐体１に若干の加工を施すだけでよく、また、既存のトレイ２をそのまま利用することができるから、経済的である。
【００３４】
上記の実施の形態では、弾性板２６を略Ｕ字状ガイド溝８の一側面８ａに押し付けるようにしたが、これに限定されるわけではなく、弾性板２６を例えばトレイ２の略Ｌ字状ガイド溝９側の外側面に押し付けることにより、略Ｕ字状ガイド溝８の他側面８ｂを各ガイド片６Ａの側面６ａに接触させるようにしてもよい。
【００３５】
【発明の効果】
請求項１に記載の発明によれば、実施の一形態（図１から図７参照）に示すように、弾性変位可能な略Ｌ字状押さえ片の下端がトレイの一側縁上面に弾性的に接触されているから、該トレイが前進の際に自重で下向きに傾くことが無くなり、外観上の体裁が良好であると共に、そのトレイが後進の際に上下動することも無くなり、トレイを静かに前後進させることができる。
【００３６】
また、弾性板の先端をガイド溝の一側面に弾性的に押し付けることにより、該ガイド溝の他側面をガイド部材の側面に接触させているから、その接触面を基準線にしてトレイを直線的に前後進させることができ、これによって、従来のように前進するトレイを横向きに傾かせることも無く、後進するトレイを横揺れさせたり雑音を発生させることも無いから、外観上の体裁が良好でトレイを静かに前後進させることができる。
【００３７】
更に、弾性板が略Ｊ字状に形成されているので、該弾性板の先端をトレイに押し付けることにより、その弾性板を全体的に撓ませて所定の弾性力を発生させ、その弾性力によりトレイをいずれか一方のガイド部材の側面に確実に接触させることができる。
【００３８】
また更に、弾性板の先端側面に円弧状突起部を一体突設することにより、該弾性板の先端部を太くしているので、その太くした先端部を介して弾性板からトレイに対して弾性力を確実に伝達することができると共に、前記円弧状突起部の円弧面を略Ｕ字状ガイド溝の一側面に線接触させることによりその接触抵抗を小さくしているから、該円弧状突起部がトレイの前後進に大きな障害となるおそれがなく、そのトレイをスムーズに前後進させることができる。
【００３９】
しかも、押さえ片及び弾性板を形成するにあたって、既存の筐体に若干の加工を施すだけでよく、また、既存のトレイをそのまま利用することができるから、経済的である。
【００４０】
請求項２に記載の発明によれば、弾性変位可能な略Ｌ字状押さえ片の下端がトレイの一側縁上面に弾性的に接触されているから、該トレイが前進の際に自重で下向きに傾くことが無くなり、外観上の体裁が良好であると共に、そのトレイが後進の際に上下動することも無くなり、トレイを静かに前後進させることができる。
【００４１】
請求項３に記載の発明によれば、弾性板の先端をトレイに弾性的に押し付けることにより、該トレイをいずれか一方のガイド部材の側面に接触させているから、その接触面を基準線にしてトレイを前後進させることができ、これによって、従来のように前進するトレイを横向きに傾かせることも無く、後進するトレイを横揺れさせたり雑音を発生させることもないから、外観上の体裁が良好で、トレイを静かに前後進させることができる。
【００４２】
請求項４に記載の発明によれば、弾性板が略Ｊ字状に形成されているので、該弾性板の先端をトレイに押し付けることにより、その弾性板を全体的に撓ませて所定の弾性力を発生させ、その弾性力によりトレイをいずれか一方のガイド部材の側面に確実に接触させることができる。
【００４３】
請求項５に記載の発明によれば、弾性板の先端側面に円弧状突起部を一体突設することにより、該弾性板の先端部を太くしているので、その太くした先端部を介して弾性板からトレイに対して弾性力を確実に伝達することができると共に、前記円弧状突起部の円弧面をトレイに線接触させることによりその接触抵抗を小さくしているから、該円弧状突起部がトレイの前後進に大きな障害となるおそれがなく、そのトレイをスムーズに前後進させることができる。
【００４４】
請求項６に記載の発明によれば、トレイの下面に形成した既存の略Ｕ字状ガイド溝を利用して、該略Ｕ字状ガイド溝の一側面に弾性板の円弧状突起部の円弧面を押し付けるようになっており、既存のトレイをそのまま利用することができるから、経済的である。
【図面の簡単な説明】
【図１】本発明の実施の一形態であるディスクプレーヤの平面図である。
【図２】同要部の分解斜視図である。
【図３】図１のＡ−Ａ矢視図である。
【図４】同要部の拡大横断面図である。
【図５】同他の要部の分解斜視図である。
【図６】同他の要部の拡大横断面図である。
【図７】同他の要部の拡大水平断面図である。
【図８】従来例の平面図である。
【図９】同ローディング状態の縦断面図である。
【図１０】図８のＢ−Ｂ矢視図である。
【図１１】同アンローディング状態の縦断面図である。
【符号の説明】
１筐体
２トレイ
３側板部
４ａ，４ｂ横桁部
５受台
６，７ガイド部材
６Ａガイド片
６ａガイド片の側面
８略Ｕ字状ガイド溝
８ａ略Ｕ字状ガイド溝の一側面
８ｂ略Ｕ字状ガイド溝の他側面
９略Ｌガイド溝
１０ラック
１１ピニオン
１４光ピックアップ
１５ドライブシャーシ
１６枢支軸
１７天板
１８中央収納部
２０ディスクホルダ
２３スリット
２４押さえ片
２４ａ押さえ片の下端
２６弾性板
２６Ａ弾性板の円弧状突起部
２６ａ円弧状突起部の円弧面
ａ，ｂ前後進
ｅ正転
ｆ逆転
ｔ押さえ片の下端とトレイの一側面上面との間の間隔
Ｄディスク
Ｌ基準線[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disk player for reproducing, recording, or erasing optical disks such as CDs and DVDs and magneto-optical disks (hereinafter abbreviated as disks).
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a technology of a disc player described in Patent Literature 1 or the like, and an example thereof will be described with reference to FIGS. 8 to 11. The technology has a housing 1 made of a synthetic resin and a tray 2, The housing 1 comprises a pair of left and right side plate portions 3 and two front and rear cross beam portions 4 a and 4 b integrally formed between the both side plate portions 3, and a pedestal provided on the inner surface of each side plate portion 3. A pair of left and right guide members 6 and 7 are provided on the top 5 in the forward and backward a and b directions. A substantially U-shaped guide groove 8 is formed on the lower surface of one side edge 2a of the tray 2, and a substantially L-shaped guide groove 9 is formed on the lower surface of the other side edge 2b of the tray 2. The grooves 8 and 9 are fitted into the guide members 6 and 7, respectively, and a rack 10 is formed on the lower surface near the one side edge 2a of the tray 2 along the forward and backward a and b directions. The pinion 11 is provided in the front side beam part 4a. Reference numeral 12 denotes a lifting prevention piece protruding from each side plate portion 3.
[0003]
A drive chassis 15 on which a turntable 13 and an optical pickup 14 are mounted is arranged below the tray 2 so as to be able to move up and down c and d around a pivot 16 at the rear end. A disk holder 20 with a magnet 19 is arranged in a central storage portion 18 of a synthetic resin top plate 17 integrally formed between both side plate portions 3 of the housing 1 so as to be able to move up and down. Reference numeral 21 denotes a cam plate slidably disposed on the front side beam portion 4a. A cam shaft 15a projecting forward from the drive chassis 15 is fitted into a cam groove 21a formed in the cam plate 21.
[0004]
The unloading operation will be described. As shown in FIG. 8 and the solid line in FIG. 9, the cam plate 21 is moved by receiving an unloading signal in a loading state in which the disk D is held between the turntable 13 and the disk holder 20. By sliding, the drive chassis 15 is moved down c via the cam groove 21a and the cam shaft 15a, and the disc D on the turntable 13 is placed on the tray 2, and then the pinion 11 meshing with the rack 10 is correctly fixed. Then, the tray 2 is advanced a through the rack 10 (see the imaginary line in FIG. 8 and FIG. 11). In the case of a loading operation, upon receiving a loading signal, the pinion 11 is rotated in the reverse direction f to perform an operation opposite to the above.
[0005]
[Patent Document 1]
JP 2001-344885 A
[Problems to be solved by the invention]
In the above-mentioned conventional configuration, the casing 1 and the tray 2 are formed of synthetic resin in order to mass-produce at low cost, and a substantially U-shaped guide groove 8 and a guide member 6 fitted therein are formed in consideration of the formation distortion and the like. And a slight gap is formed between the tray 2 and the tray 2 so that the forward and backward movements a and b of the tray 2 can be smoothly performed. Therefore, when the tray 2 is advanced a based on the unloading signal, the tray 2 Due to its own weight, the tray 2 tilts down slightly at an angle β (see the phantom line in FIG. 11), or the tray 2 tilts sideways at a slight angle α due to the rotational force of the pinion 11 in the forward rotation e direction (FIG. 8). (See virtual line), appearance is bad. In addition, when the tray 2 is moved backward b based on the loading signal, the inclination of the tray 2 is corrected. At the time of the correction, the tray 2 moves up and down or rolls to generate noise, which makes the user uncomfortable. give.
[0007]
The present invention has been made in view of the above-mentioned conventional drawbacks, and has as its object to provide a disk player that moves a tray linearly forward and backward without tilting.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is characterized in that a pair of left and right guide members project from front and rear in a front-rear direction on a support provided on both side plates of a synthetic resin housing. By fitting the respective guide grooves formed on both side edges of the lower surface of the tray with the respective guide members, the tray is arranged to be able to move forward and backward in the housing, and a rack is formed on the lower surface of the tray along the front and rear direction. In addition, a pinion is provided in the housing so as to face the rack, and a drive chassis equipped with a turntable and an optical pickup is arranged below the tray so as to be vertically movable about a pivot shaft at a rear end. A disk holder is disposed in a central storage portion of a synthetic resin top plate integrally formed between both side plate portions of the housing so as to face the turntable, so that the disk holder can be moved up and down. After receiving the unloading signal in the loading state, the drive chassis moves down and the disk on the turntable is placed on the tray, and then the pinion meshing with the rack is rotated forward to rotate the rack. The tray is moved forward through the above, and the pinion is reversed by receiving a loading signal to perform the reverse operation, and a slit is formed on one side of the top plate to form the slit. An elastically displaceable substantially L-shaped pressing piece is left uncut on the top plate, and the lower end of the pressing piece is positioned lower than the upper surface of one side edge of the tray opposed thereto by a predetermined distance so that the lower end of the pressing piece is A substantially J-shape is formed on the front horizontal girder part of the front and rear two horizontal girder parts which are elastically contacted with the upper surface of one side edge of the tray and are integrally formed between both side plate parts of the housing. The elastic plate is integrally protruded, and an arc-shaped projection is integrally formed on the side surface of the distal end of the elastic plate. The arc-shaped projection is inserted into the one of the U-shaped guide grooves. Then, the arc surface of the arc-shaped protrusion is elastically pressed against one side surface of the guide groove, so that the other side surface of the guide groove is brought into contact with the side surface of the guide member.
[0009]
The above configuration corresponds to one embodiment (see FIGS. 1 to 7). According to this configuration, the lower end of the substantially L-shaped pressing piece that can be elastically displaced is elastically attached to the upper surface of one side edge of the tray. , The tray does not tilt downward by its own weight when moving forward, the appearance is good, and the tray does not move up and down when moving backward. Can be moved forward and backward.
[0010]
Also, since the other end of the guide groove is brought into contact with the side surface of the guide member by elastically pressing the tip of the elastic plate against one side surface of the guide groove, the tray is linearly set with the contact surface as a reference line. The forward-looking tray can be moved forward and backward, so that the forward-moving tray does not tilt sideways and does not cause the backward-moving tray to roll or generate noise, so that the appearance is good. Can move the tray forward and backward quietly.
[0011]
Furthermore, since the elastic plate is formed in a substantially J-shape, pressing the tip of the elastic plate against the tray causes the entire elastic plate to bend, thereby generating a predetermined elastic force. The tray can be reliably brought into contact with the side surface of one of the guide members.
[0012]
In addition, since the distal end of the elastic plate is thickened by integrally projecting an arc-shaped projection on the side surface of the distal end of the elastic plate, the elastic plate is elastically moved from the elastic plate to the tray through the thickened distal end. Since the force can be reliably transmitted and the contact resistance is reduced by bringing the arc surface of the arc-shaped projection into line contact with one side surface of the substantially U-shaped guide groove, the arc-shaped projection is reduced. Does not become a major obstacle to forward and backward movement of the tray, and the tray can be smoothly moved forward and backward.
[0013]
In addition, in forming the holding pieces and the elastic plate, it is only necessary to perform a slight processing on the existing housing, and the existing tray can be used as it is, which is economical.
[0014]
According to the second aspect of the invention, a pair of left and right guide members are provided on both sides of the synthetic resin housing so as to protrude in the front-rear direction and formed on both side edges of the lower surface of the synthetic resin tray. By fitting each guide groove to each of the guide members, the tray is arranged to be able to move forward and backward in the housing, and a rack is formed on the lower surface of the tray along the front and rear direction, and is opposed to the rack. The case is provided with a pinion, and by receiving an unloading signal in the loading state, the pinion meshing with the rack is rotated forward to advance the tray through the rack and receive the loading signal. In the disc player in which the pinion is reversed to perform the operation opposite to the above, a slit is formed on one side of the synthetic resin top plate integrally formed between the both side plates. As a result, a substantially L-shaped pressing piece that can be elastically displaced is left uncut on the top plate, and the lower end of the pressing piece is positioned lower than the upper surface of one side edge of the tray facing it by a predetermined distance, so that the pressing is performed. The lower end of the piece is elastically in contact with the upper surface of one side edge of the tray.
[0015]
According to the above configuration, since the lower end of the elastically displaceable substantially L-shaped pressing piece is elastically in contact with the upper surface of one side edge of the tray, the tray does not tilt downward by its own weight when moving forward. In addition, the appearance is good, and the tray does not move up and down when moving backward, so that the tray can be moved forward and backward gently.
[0016]
According to a third aspect of the present invention, in the second aspect of the present invention, an elastic plate is integrally provided on a front side of the housing, and the front end of the elastic plate is elastically pressed against a tray, whereby the tray is elastically pressed. The tray is brought into contact with the side surface of one of the guide members.
[0017]
According to the above configuration, since the tip of the elastic plate is elastically pressed against the tray so that the tray is brought into contact with the side surface of one of the guide members, the tray is moved forward and backward with the contact surface as a reference line. As a result, the forward-moving tray is not tilted sideways, and the backward-moving tray is not rolled or noises are generated. Can be moved back and forth quietly.
[0018]
According to a fourth aspect of the present invention, in the third aspect of the present invention, the elastic plate is formed in a substantially J shape.
[0019]
According to the above configuration, since the elastic plate is formed in a substantially J-shape, by pressing the tip of the elastic plate against the tray, the elastic plate is entirely bent to generate a predetermined elastic force, The elastic force allows the tray to reliably contact the side surface of one of the guide members.
[0020]
According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, an arc-shaped projection is integrally provided on a front end side surface of the elastic plate, and the arc surface of the arc-shaped projection is provided on a tray. It is characterized by being elastically pressed.
[0021]
According to the above configuration, the arc-shaped projection is integrally provided on the side surface of the distal end of the elastic plate, so that the distal end of the elastic plate is thickened. Since the elastic force can be reliably transmitted to the tray and the contact resistance is reduced by bringing the arc surface of the arc-shaped projection into line contact with the tray, the arc-shaped projection moves forward and backward of the tray. The tray can be smoothly moved back and forth without causing any major obstacle.
[0022]
The invention according to claim 6 is the invention according to claim 5, wherein the arc-shaped projection is inserted into the one guide groove formed in a substantially U-shape so that the arc-shaped surface of the arc-shaped projection is formed. It is characterized in that the other side surface of the guide groove is brought into contact with the side surface of the guide member by elastically pressing against one side surface of the guide groove.
[0023]
According to the above configuration, by utilizing the existing substantially U-shaped guide groove formed on the lower surface of the tray, the arc surface of the arc-shaped projection of the elastic plate is pressed against one side surface of the substantially U-shaped guide groove. It is economical because existing trays can be used as they are.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 to 3 show a disk player according to an embodiment of the present invention, in which one side portion of a synthetic resin top plate 17 integrally formed between both side plate portions 3 of a synthetic resin housing 1. By forming a slit 23 in the top plate 17, an elastically displaceable pressing piece 24 is left uncut on the top plate 17. A pair of left and right guide members 6 and 7 are formed by a plurality of guide pieces 6A and 7A projecting from the receiving table 5 at predetermined intervals in the forward and backward a and b directions. A rectangular through-hole 25 is provided at a position facing the U-shaped guide groove 8, and a distal end of an elastic plate 26 having a base end integrally projecting from a side edge of the through-hole 25 is inserted into the substantially U-shaped guide groove 8. Have been. Since the configuration other than the above is substantially the same as the configuration shown in FIGS. 8 to 11, the same portions are denoted by the same reference numerals and description thereof will be omitted.
[0025]
As shown in FIG. 4, the holding piece 24 is substantially L-shaped when viewed from the front, and its lower end 24a is positioned lower than the upper surface of the one side edge 2a of the tray 2 facing it by a predetermined interval t. The lower end 24a of the pressing piece 24 is elastically contacted with the upper surface of the one side edge 2a of the tray 2 (see the phantom line in FIG. 4) (see the solid line in FIG. 4).
[0026]
As shown in FIGS. 5 to 7, the elastic plate 26 is formed in a substantially J-shape, and an arc-shaped projection 26A is integrally provided on a tapered tip side surface thereof. By elastically pressing the arc surface 26a of the portion 26A against one side surface 8a of the substantially U-shaped guide groove 8, the other side surface 8b of the substantially U-shaped guide groove 8 is brought into contact with the side surface 6a of each guide piece 6A. I have.
[0027]
The unloading operation will be described. As shown by a solid line in FIG. 1, a conventional method is performed by receiving an unloading signal in a loading state (see FIG. 9) in which a disk D is held between a turntable 13 and a disk holder 20 (see FIG. 9). After placing the disk D on the turntable 13 on the tray 2 in substantially the same procedure as the example, the pinion 11 meshing with the rack 10 is rotated forward e to advance the tray 2 through the rack 10 a. (See FIG. 1 phantom line). At this time, since the lower end 24a of the holding piece 24 is in contact with the upper surface of the one side edge 2a of the tray 2, the tray 2 is advanced by its own weight without being tilted downward, and the elastic plate 26 is used to make a substantially U-shape. Since the other side surface 8b of the guide groove 8 is in contact with the side surface 6a of each guide piece 6A, the tray 2 is advanced a without tilting the tray 2 sideways with the contact surface as the reference line L.
[0028]
At the time of the loading operation, as shown by the phantom line in FIG. 1, the disk D is placed on the tray 2 with the tray 2 advanced to the most forward position (see FIG. 11), and the loading signal is received. As a result, the pinion 11 is reversed f, and the tray 2 is moved backward b linearly along the reference line L via the rack 10.
[0029]
According to the above configuration, since the lower end 24a of the elastically displaceable substantially L-shaped pressing piece 24 is elastically in contact with the upper surface of the one side edge 2a of the tray 2, the weight of the tray 2 is reduced when the tray 2 moves forward. This prevents the tray 2 from tilting downward, has a good appearance, and the tray 2 does not move up and down during the backward movement b, so that the tray 2 can be smoothly moved forward and backward a and b.
[0030]
Also, since the other side surface 8b of the guide groove 8 is brought into contact with the side surface 6a of each guide piece 6A by elastically pressing the tip of the elastic plate 26 against one side surface 8a of the guide groove 8, the contact surface is changed. The tray 2 can be linearly moved forward and backward a and b by using the reference line L, so that the tray 2 moving backward a can be rolled without tilting the tray 2 advancing forward in the conventional manner. Since the tray 2 does not cause noise or generate noise, the appearance is good, and the tray 2 can be moved forward and backward a and b gently.
[0031]
Furthermore, since the elastic plate 26 is formed in a substantially J-shape, by pressing the tip of the elastic plate 26 against the tray 2, the elastic plate 26 is entirely bent to generate a predetermined elastic force, The other side surface 8b of the substantially U-shaped guide groove 8 can be reliably brought into contact with the side surface 6a of each guide piece 6A by the elastic force.
[0032]
Further, the distal end of the elastic plate 26 is thickened by integrally projecting an arc-shaped projection 26A on the distal end side surface of the elastic plate 26, so that the tray is moved from the elastic plate 26 through the thickened distal end. 2 can be reliably transmitted, and the contact resistance can be reduced by bringing the arc-shaped surface 26a of the arc-shaped projection 26A into line contact with one side 8a of the substantially U-shaped guide groove 8. Therefore, there is no possibility that the arc-shaped protrusion 26A will obstruct the movement of the tray 2 forward and backward a and b, and the tray 2 can smoothly move forward and backward a and b.
[0033]
In addition, in forming the holding piece 24 and the elastic plate 26, it is only necessary to perform a slight processing on the existing housing 1, and the existing tray 2 can be used as it is, which is economical.
[0034]
In the above-described embodiment, the elastic plate 26 is pressed against the one side surface 8a of the substantially U-shaped guide groove 8. However, the present invention is not limited to this. By pressing against the outer surface on the guide groove 9 side, the other side surface 8b of the substantially U-shaped guide groove 8 may be brought into contact with the side surface 6a of each guide piece 6A.
[0035]
【The invention's effect】
According to the first aspect of the present invention, as shown in one embodiment (see FIGS. 1 to 7), the lower end of the substantially L-shaped pressing piece that can be elastically displaced is elastically attached to the upper surface of one side edge of the tray. , The tray does not tilt downward by its own weight when moving forward, the appearance is good, and the tray does not move up and down when moving backward. Can be moved forward and backward.
[0036]
Also, since the other end of the guide groove is brought into contact with the side surface of the guide member by elastically pressing the tip of the elastic plate against one side surface of the guide groove, the tray is linearly set with the contact surface as a reference line. The forward-looking tray can be moved forward and backward, so that the forward-moving tray does not tilt sideways and does not cause the backward-moving tray to roll or generate noise, so that the appearance is good. Can move the tray forward and backward quietly.
[0037]
Furthermore, since the elastic plate is formed in a substantially J-shape, pressing the tip of the elastic plate against the tray causes the entire elastic plate to bend, thereby generating a predetermined elastic force. The tray can be reliably brought into contact with the side surface of one of the guide members.
[0038]
In addition, since the distal end of the elastic plate is thickened by integrally projecting an arc-shaped projection on the side surface of the distal end of the elastic plate, the elastic plate is elastically moved from the elastic plate to the tray through the thickened distal end. Since the force can be reliably transmitted and the contact resistance is reduced by bringing the arc surface of the arc-shaped projection into line contact with one side surface of the substantially U-shaped guide groove, the arc-shaped projection is reduced. Does not become a major obstacle to forward and backward movement of the tray, and the tray can be smoothly moved forward and backward.
[0039]
In addition, in forming the holding pieces and the elastic plate, it is only necessary to perform a slight processing on the existing housing, and the existing tray can be used as it is, which is economical.
[0040]
According to the second aspect of the present invention, since the lower end of the substantially L-shaped pressing piece that is elastically displaceable is elastically in contact with the upper surface of one side edge of the tray, the tray is downwardly moved by its own weight when the tray advances. , The appearance is good, and the tray does not move up and down when moving backward, so that the tray can be moved forward and backward gently.
[0041]
According to the third aspect of the present invention, the tray is brought into contact with the side surface of one of the guide members by elastically pressing the tip of the elastic plate against the tray. This makes it possible to move the tray back and forth, thereby preventing the advancing tray from tilting sideways as in the past, and preventing the backward moving tray from swaying and generating noise. The tray can be moved back and forth quietly.
[0042]
According to the fourth aspect of the present invention, since the elastic plate is formed in a substantially J-shape, by pressing the tip of the elastic plate against the tray, the elastic plate is entirely bent to provide a predetermined elasticity. A force is generated, and the tray can be reliably brought into contact with the side surface of one of the guide members by its elastic force.
[0043]
According to the invention as set forth in claim 5, the distal end of the elastic plate is thickened by integrally protruding the arc-shaped projection on the side surface of the distal end of the elastic plate. Since the elastic force can be reliably transmitted from the elastic plate to the tray, and the contact resistance is reduced by bringing the arc surface of the arc-shaped projection into line contact with the tray, the arc-shaped projection is reduced. Does not become a major obstacle to forward and backward movement of the tray, and the tray can be smoothly moved forward and backward.
[0044]
According to the invention as set forth in claim 6, the existing substantially U-shaped guide groove formed on the lower surface of the tray is used, and the arc of the arc-shaped projection of the elastic plate is provided on one side surface of the substantially U-shaped guide groove. It is economical because it presses the surface and the existing tray can be used as it is.
[Brief description of the drawings]
FIG. 1 is a plan view of a disc player according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the main part.
FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 1;
FIG. 4 is an enlarged cross-sectional view of the main part.
FIG. 5 is an exploded perspective view of another main part.
FIG. 6 is an enlarged cross-sectional view of another main part.
FIG. 7 is an enlarged horizontal cross-sectional view of another main part.
FIG. 8 is a plan view of a conventional example.
FIG. 9 is a longitudinal sectional view of the loading state.
FIG. 10 is a view taken in the direction of arrows BB in FIG. 8;
FIG. 11 is a vertical sectional view of the unloading state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing 2 Tray 3 Side plate part 4a, 4b Horizontal girder part 5 Receiving stand 6, 7 Guide member 6A Guide piece 6a Side face 8 of guide piece 8 U-shaped guide groove 8a One side 8b of substantially U-shaped guide groove Other side surface 9 of L-shaped guide groove 9 L guide groove 10 Rack 11 Pinion 14 Optical pickup 15 Drive chassis 16 Pivot shaft 17 Top plate 18 Central storage unit 20 Disk holder 23 Slit 24 Pressing piece 24a Lower end 26 of pressing piece Elastic plate 26A Arc-shaped projection 26a of elastic plate Arc-shaped surface a, b of arc-shaped projection Forward / backward e Forward rotation f Reverse rotation t Distance between lower end of holding piece and upper surface of one side of tray D Disk L Reference line

Claims

A pair of left and right guide members are provided in a receiving stand provided on both side plates of the synthetic resin housing along the front-rear direction, and the respective guide grooves formed on both side edges of the lower surface of the synthetic resin tray are each of the guide members. The tray is disposed in the housing so as to be able to move forward and backward, a rack is formed on the lower surface of the tray along the front-rear direction, and a pinion is provided in the housing facing the rack. Under the tray, a drive chassis equipped with a turntable and an optical pickup is disposed so as to be able to move up and down around a pivot shaft at a rear end, and is opposed to the turntable between both side plates of the housing. A disk holder is arranged in the central storage part of the integrally formed synthetic resin top plate so as to be able to move up and down, and the disk is held between the turntable and the disk holder. Upon receiving the signal, the drive chassis moves down and the disc on the turntable is placed on the tray, then the pinion meshing with the rack is rotated forward to advance the tray through the rack, and the loading signal is received. In the disc player in which the pinion is reversed by receiving the signal to perform an operation opposite to the above, a slit is formed on one side of the top plate so that the top plate can be elastically displaced to the substantially L-shape. The holding piece is left uncut, and the lower end of the holding piece is elastically positioned on the upper surface of one side edge of the tray by positioning the lower end of the holding piece lower than the upper surface of one side edge of the tray by a predetermined distance. A substantially J-shaped elastic plate is integrally protruded from a front cross beam portion of two front and rear cross beam portions integrally formed between both side plate portions of the housing, and a front end side surface of the elastic plate. An arc-shaped protrusion is integrally provided, and the arc-shaped protrusion is inserted into the one U-shaped guide groove so that the arc surface of the arc-shaped protrusion is formed on one side surface of the guide groove. A disc player characterized in that the other side surface of the guide groove is brought into contact with the side surface of the guide member by elastically pressing.

A pair of left and right guide members are provided in a receiving stand provided on both side plates of the synthetic resin housing along the front-rear direction, and the respective guide grooves formed on both side edges of the lower surface of the synthetic resin tray are each of the guide members. The tray is disposed in the housing so as to be able to move forward and backward, a rack is formed on the lower surface of the tray along the front-rear direction, and a pinion is provided in the housing facing the rack. By receiving the unloading signal in the loading state, the pinion meshing with the rack is rotated forward and the tray is advanced through the rack, and the pinion is rotated reversely by receiving the loading signal, which is different from the above. In a disk player in which the reverse operation is performed, a slit is formed on one side of a synthetic resin top plate integrally formed between the both side plate portions, so that the top plate has an elasticity. A displaceable approximately L-shaped pressing piece is left uncut, and the lower end of the pressing piece is positioned lower than the upper surface of one side edge of the tray by a predetermined distance so that the lower end of the pressing piece is positioned on one side of the tray. A disc player characterized by being elastically contacted with an upper surface of an edge.

An elastic plate is integrally provided on the front side of the housing, and the tray is brought into contact with a side surface of one of the guide members by elastically pressing a tip of the elastic plate against the tray. 3. The disc player according to claim 2, wherein:

The disk player according to claim 3, wherein the elastic plate is formed in a substantially J shape.

The arc-shaped projection is integrally formed on the side surface of the distal end of the elastic plate, and the arc-shaped surface of the arc-shaped projection is elastically pressed against the tray. Disc player.

The arc-shaped protrusion is inserted into the one of the guide grooves formed in a substantially U-shape, and the arc surface of the arc-shaped protrusion is elastically pressed against one side surface of the guide groove, so that the other of the guide groove is formed. 6. The disc player according to claim 5, wherein the side surface is brought into contact with the side surface of the guide member.