JP4148282B2

JP4148282B2 - Disk unit

Info

Publication number: JP4148282B2
Application number: JP2006174568A
Authority: JP
Inventors: 真也山口; 伸幸岡崎
Original assignee: Funai Electric Co Ltd
Current assignee: Funai Electric Co Ltd
Priority date: 2006-06-23
Filing date: 2006-06-23
Publication date: 2008-09-10
Anticipated expiration: 2026-06-23
Also published as: JP2008004209A

Description

本発明は、ディスク装置（例えばＤＶＤレコーダやＤＶＤプレーヤなど）に関し、特に
、安価な構造で静音性に優れ組立作業を容易且つ確実に行うことができるようにした。 The present invention relates to a disk device (for example, a DVD recorder, a DVD player, etc.), and in particular, has an inexpensive structure and is excellent in quietness so that an assembling operation can be performed easily and reliably.

ディスク装置の一例として図９に示すものがある。これは、ＤＶＤレコーダであって、
ディスクＤを載置するためのトレイ１を前後進ａ，ｂ可能に支持する筐体２が設けられ、
該筐体２内にトラバースシャーシ３とトラバースホルダ４とが配置され、該トラバースシ
ャーシ３の後部がゴムからなる左右一対の後側弾性体５を介して筐体２に上下動ｃ，ｄ可
能に連結されると共に、そのトラバースシャーシ３の前部がゴムからなる左右一対の前側
弾性体６を介してトラバースホルダ４に連結され、該トラバースホルダ４に対向するカム
スライダ７が筐体２に前後進ａ，ｂ方向とは直交する左右方向にスライド可能に配置され
、該カムスライダ７のカム溝８に嵌入するカムピン９がトラバースホルダ４の前面に突設
されている。 An example of a disk device is shown in FIG. This is a DVD recorder,
A housing 2 is provided for supporting the tray 1 for placing the disk D so that the tray 1 can be moved forward and backward.
A traverse chassis 3 and a traverse holder 4 are disposed in the housing 2 so that the rear portion of the traverse chassis 3 can be moved up and down c and d in the housing 2 via a pair of left and right rear elastic bodies 5 made of rubber. In addition, the front portion of the traverse chassis 3 is connected to the traverse holder 4 via a pair of left and right front elastic bodies 6 made of rubber, and the cam slider 7 facing the traverse holder 4 moves forward and backward in the housing 2 a. A cam pin 9 that is slidable in the left-right direction perpendicular to the b-direction and is inserted into the cam groove 8 of the cam slider 7 projects from the front surface of the traverse holder 4.

前記トラバースシャーシ３の上面に左右一対のガイドレール１１を介して光ピックアッ
プ１２がディスクＤの半径方向に沿って往復移動可能に配置され、トラバースシャーシ３
の前部にスピンドルモータ１３が配置され、該スピンドルモータ１３の回転軸にターンテ
ーブル１４が嵌着され、該ターンテーブル１４に対向して筐体２に架設した横桁１６の中
央収納部１６ａ内にクランパ１７が一定範囲内昇降可能に配置されている。 An optical pickup 12 is disposed on the upper surface of the traverse chassis 3 via a pair of left and right guide rails 11 so as to be capable of reciprocating along the radial direction of the disk D.
A spindle motor 13 is disposed at the front of the rotary motor, a turntable 14 is fitted on the rotation shaft of the spindle motor 13, and a central storage portion 16a of the cross beam 16 is installed on the casing 2 so as to face the turntable 14. The clamper 17 is arranged so as to be movable up and down within a certain range.

従来、前記クランパ１７は、図１０に示すように、円筒状に形成されて、その外周面に
鍔部１７ａが一体突設され、該クランパ１７の内周面上部に一体形成した天板１８の下面
中央に中心軸１９が一体突設されると共に、該天板１８に中心軸１９を中心にして周方向
に所定間隔をおいて複数のフック２０が一体突設されている。なお、ターンテーブル１４
の中央突起部１４ａにもヨークｙが埋設されている。 Conventionally, as shown in FIG. 10, the clamper 17 is formed in a cylindrical shape, and a flange portion 17 a is integrally projected on the outer peripheral surface of the clamper 17, and the top plate 18 integrally formed on the upper inner peripheral surface of the clamper 17. A central shaft 19 is integrally projected at the center of the lower surface, and a plurality of hooks 20 are integrally projected on the top plate 18 at a predetermined interval in the circumferential direction around the central shaft 19. The turntable 14
A yoke y is also embedded in the central projection 14a.

動作原理を説明すると、図９の実線はプレイモードを示しており、トラバースシャーシ
３を上限位置まで上昇させて水平姿勢とし、磁石Ｍ及びヨークＹ，ｙの磁気吸引力により
、クランパ１７がディスクＤを介してターンテーブル１４に吸着されており、スピンドル
モータ１３によりターンテーブル１４を介してディスクＤを高速回転させ、光ピックアッ
プ１２によりディスクＤに記録されている映像情報の再生や録画または消去を行う。 The operation principle will be described. The solid line in FIG. 9 shows the play mode. The traverse chassis 3 is raised to the upper limit position so as to be in a horizontal position. Is rotated by the spindle motor 13 through the turntable 14 and the optical pickup 12 reproduces, records or erases the video information recorded on the disk D. .

クランパ１７の組立手順を説明すると、互いに吸着させた磁石Ｍ及びヨークＹの中心孔
Ｍａ，Ｙａを中心軸１９に嵌合させて該磁石Ｍ及びヨークＹを天板１８の下面に押し付け
ることにより、その磁石Ｍの外周縁を各フック２０に係合させ、ヨークＹを中心軸１９回
りで所定角度回動させてストッパ機構（図示せず）に係合させ、これによって、ヨークＹ
の回動を阻止する。 The assembly procedure of the clamper 17 will be described. By fitting the center holes Ma and Ya of the magnet M and the yoke Y attracted to the center shaft 19 and pressing the magnet M and the yoke Y against the lower surface of the top plate 18, The outer peripheral edge of the magnet M is engaged with each hook 20, and the yoke Y is rotated by a predetermined angle around the central axis 19 to be engaged with a stopper mechanism (not shown).
The rotation of the is prevented.

上記構成によれば、クランパ１７内のヨークＹが磁石Ｍよりも奥側に配置されているた
め、該ヨークＹを所定角度回動させてストッパ機構に係合させるのに手間がかかって面倒
であるという難点がある。 According to the above configuration, since the yoke Y in the clamper 17 is disposed behind the magnet M, it takes time and effort to rotate the yoke Y by a predetermined angle and engage the stopper mechanism. There is a difficulty that there is.

上記難点を解消する技術として特許文献１に記載したものがある。これは、図１１（ａ
）に示すように、クランパ１７に底板２２が一体形成されると共に、該底板２２の底面中
央に中心軸２３が一体突設され、該中心軸２３の上面外周部に周方向所定間隔をおいて複
数のフック２４が一体突設され、該各フック２４に対向してヨークＹに複数の係合孔２５
が貫設されている。 There exists what was described in patent document 1 as a technique which eliminates the said difficulty. This is shown in FIG.
), A bottom plate 22 is integrally formed with the clamper 17, and a central shaft 23 is integrally projected at the center of the bottom surface of the bottom plate 22, with a predetermined circumferential interval on the outer peripheral portion of the top surface of the central shaft 23. A plurality of hooks 24 are integrally projected, and a plurality of engagement holes 25 are formed in the yoke Y so as to face the hooks 24.
Is penetrated.

クランパ１７の組立手順を説明すると、図１１（ｂ）に示すように、下面に磁石Ｍを吸
着させたヨークＹをクランパ１７に接近させ、磁石Ｍの中心孔Ｍａ内に各フック２４を嵌
入させ、手作業でヨークＹを押し下げながら適当に動かして各係合孔２５を各フック２４
に係合させる。
特開２００５−３２４３７号公報 The assembly procedure of the clamper 17 will be described. As shown in FIG. 11B, the yoke Y having the magnet M attracted to the lower surface is brought close to the clamper 17, and the hooks 24 are inserted into the center hole Ma of the magnet M. The respective engagement holes 25 are moved to the respective hooks 24 by appropriately moving the yoke Y while pushing it down manually.
Engage with.
JP 2005-32437 A

上記従来の構成では、手作業でヨークＹを押し下げながら適当に動かして各係合孔２５
を各フック２４に係合させる際に、該各フック２４がヨークＹの下に隠れて見えないので
、その各フック２４が過度に押し曲げられて変形したり損傷されることがあり、これによ
って、磁石Ｍ及びヨークＹのクランパ１７に対する取り付けが不安定になる。 In the above conventional configuration, each engagement hole 25 is moved by appropriately moving the yoke Y while pushing it down manually.
When the hooks 24 are engaged with the hooks 24, the hooks 24 are hidden under the yoke Y and cannot be seen, so that the hooks 24 may be excessively bent and deformed or damaged. The attachment of the magnet M and the yoke Y to the clamper 17 becomes unstable.

また、各フック２４はヨークＹがクランパ１７内から抜け出ないようにしているだけで
あるから、該ヨークＹと底板２２との間の間隔ｔ１に比べて磁石Ｍの厚さｔ２が寸法誤差
などによりわずかでも小さいときには、磁石Ｍと底板２２との間に間隙αが生じるため、
ターンテーブル１４の高速回転により磁石Ｍ及びヨークＹが振動して不快な騒音を発生さ
せるおそれがある。 Further, each hook 24 only prevents the yoke Y from coming out of the clamper 17, so that the thickness t2 of the magnet M is smaller than the distance t1 between the yoke Y and the bottom plate 22 due to a dimensional error or the like. When it is slightly small, a gap α is generated between the magnet M and the bottom plate 22.
The magnet M and the yoke Y may vibrate due to high-speed rotation of the turntable 14 and may cause unpleasant noise.

更に、各フック２４間の間隔を十分にとるためには、中心軸２３の外径ｈ１を大きくす
る必要があり、その外径ｈ１を大きくした分だけ磁石Ｍの外径ｈ２も大きくなるので、該
磁石Ｍが大型化してコストアップになる。 Furthermore, in order to ensure a sufficient space between the hooks 24, it is necessary to increase the outer diameter h1 of the central shaft 23, and the outer diameter h2 of the magnet M increases as the outer diameter h1 is increased. The magnet M is increased in size and the cost is increased.

本発明は、上記従来の欠点に鑑み、安価な構造で静音性に優れ組立作業を容易且つ確実
に行うことができるようにしたディスク装置を提供することを目的としている。 The present invention has been made in view of the above-described conventional drawbacks, and an object thereof is to provide a disk device that has an inexpensive structure, is excellent in quietness, and can be easily and reliably assembled.

上記目的を達成するため、請求項１に記載の発明は、筐体内にターンテーブルと光ピッ
クアップとが配置され、前記ターンテーブルに対向して磁石及びヨークを備えたクランパ
が筐体に一定範囲内昇降可能に配置されており、該クランパがディスクを介して前記ター
ンテーブルに吸着され、該ターンテーブルによりディスクを高速回転させ、該ディスクに
記録されている情報を光ピックアップにより読み取るようにしたディスク装置において、
前記クランパが円筒状に形成され、該クランパ内の下部中央に中心軸付き底板が配置され
ると共に、該底板の外周縁とクランパの内周面下部とが周方向所定間隔をおいて架設した
弾性変位可能な複数の弾性支持板を介して一体形成され、前記クランパの内周面上部に周
方向所定間隔をおいて弾性変位可能な複数の弾性アームが一体突設され、前記ヨークが、
中心孔を貫設した円形状ヨーク本体と、該ヨーク本体の外周縁に各弾性アームに対向して
周方向所定間隔をおいて一体突設された複数の突出部と、該各突出部の外周縁に一体突設
された翼片とを有し、該各翼片に対向してクランパの内周面に複数の固定ストッパ片が一
体突設され、前記各弾性支持板から各固定ストッパ片の近傍まで延びる弾性変位可能な複
数の可動ストッパ片が設けられ、その互いに対向する可動ストッパ片と固定ストッパ片と
の間に翼片の幅よりも若干広幅の空隙が形成されており、リング状磁石を同心状に吸着さ
せたヨークの各突出部間の凹部を各弾性アームに対向させた状態でそのヨーク及び磁石の
中心孔を中心軸に嵌合させて底板上に載置し、ヨークを中心軸回りで所定角度回動させて
各突出部を各弾性アームに係合させることにより、該各弾性アームと底板とで磁石及びヨ
ークを弾性的に挟持し、それとほぼ同時に、各翼片を各空隙に嵌入させてヨークの回動を
阻止することを特徴としている。 In order to achieve the above object, according to a first aspect of the present invention, a turntable and an optical pickup are disposed in a housing, and a clamper having a magnet and a yoke facing the turntable is within a certain range in the housing. A disk device arranged so as to be able to move up and down, wherein the clamper is attracted to the turntable via a disk, the disk is rotated at high speed by the turntable, and information recorded on the disk is read by an optical pickup In
The clamper is formed in a cylindrical shape, a bottom plate with a central shaft is disposed at the lower center of the clamper, and an outer peripheral edge of the bottom plate and a lower portion of the inner peripheral surface of the clamper are installed at predetermined intervals in the circumferential direction. A plurality of elastic arms integrally formed via a plurality of displaceable elastic support plates, and a plurality of elastic arms that can be elastically displaced at predetermined intervals in the circumferential direction are provided integrally on the inner peripheral surface of the clamper.
A circular yoke main body penetrating through the central hole, a plurality of protrusions integrally protruding from the outer peripheral edge of the yoke main body at predetermined intervals in the circumferential direction so as to face the elastic arms; A plurality of fixed stopper pieces integrally protruding on the inner peripheral surface of the clamper so as to face each of the blade pieces, and from each elastic support plate, A plurality of elastically displaceable movable stopper pieces extending to the vicinity are provided, and a gap slightly wider than the width of the wing piece is formed between the movable stopper piece and the fixed stopper piece facing each other, and a ring magnet The yoke and the center hole of the magnet are fitted to the central axis with the concave portion between the projecting portions of the yoke adsorbed concentrically facing each elastic arm, and placed on the bottom plate. Rotate a predetermined angle around the axis to engage each protrusion with each elastic arm By, it is characterized by the magnet and the yoke resiliently held between respective resilient arms and the bottom plate, therewith to substantially simultaneously, is fitted to the wings to the gap to prevent the rotation of the yoke.

請求項２に記載の発明は、筐体内にターンテーブルと光ピックアップとが配置され、前
記ターンテーブルに対向して磁石及びヨークを備えたクランパが筐体に一定範囲内昇降可
能に配置されており、該クランパがディスクを介して前記ターンテーブルに吸着され、該
ターンテーブルによりディスクを高速回転させ、該ディスクに記録されている情報を光ピ
ックアップにより読み取るようにしたディスク装置において、前記クランパが円筒状に形
成され、該クランパ内の下部中央に中心軸付き底板が配置されると共に、該底板の外周縁
とクランパの内周面下部とが周方向所定間隔をおいて架設した弾性変位可能な複数の弾性
支持板を介して一体形成され、中心孔が貫設されたヨーク及びそれに同心状に吸着したリ
ング状磁石を中心軸に嵌合させて底板上に載置し、そのヨークを中心軸回りで所定角度回
動させることにより、その磁石及びヨークを弾性的に挟持する挟持機構とその回動を阻止
するストッパ機構とが設けられていることを特徴としている。 According to a second aspect of the present invention, a turntable and an optical pickup are disposed in a housing, and a clamper having a magnet and a yoke is disposed in the housing so as to be movable up and down within a certain range, facing the turntable. In the disk device in which the clamper is attracted to the turntable via a disk, the disk is rotated at a high speed by the turntable, and the information recorded on the disk is read by an optical pickup, the clamper is cylindrical A bottom plate with a central shaft is disposed in the lower center of the clamper, and a plurality of elastically displaceable members in which an outer peripheral edge of the bottom plate and a lower portion of the inner peripheral surface of the clamper are installed at predetermined intervals in the circumferential direction. A yoke with a central hole formed through an elastic support plate and a ring-shaped magnet adsorbed concentrically to the yoke are fitted to the central axis. A holding mechanism for elastically holding the magnet and the yoke and a stopper mechanism for preventing the rotation are provided by placing the yoke on the bottom plate and rotating the yoke by a predetermined angle around the central axis. It is characterized by.

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、前記挟持機構が、クランパ
の内周面上部に周方向所定間隔をおいて一体突設された弾性変位可能な複数の弾性アーム
を有し、前記ヨークが、中心孔を貫設した円形状ヨーク本体と、該ヨーク本体の外周縁に
各弾性アームに対向して周方向所定間隔をおいて一体突設された複数の突出部とを有して
おり、磁石を同心状に吸着させたヨークの各突出部間の凹部を各弾性アームに対向させた
状態でそのヨーク及び磁石の中心孔を中心軸に嵌合させて底板上に載置し、ヨークを中心
軸回りで所定角度回動させることにより、該ヨークの各突出部を各弾性アームに係合させ
ることを特徴としている。 According to a third aspect of the present invention, in the second aspect of the present invention, the clamping mechanism includes a plurality of elastically displaceable elastic arms integrally projecting from the upper part of the inner peripheral surface of the clamper at a predetermined interval in the circumferential direction. The yoke has a circular yoke body penetrating through a central hole, and a plurality of projecting portions integrally projecting from the outer peripheral edge of the yoke body at a predetermined interval in the circumferential direction facing each elastic arm The yoke and the center hole of the magnet are fitted to the central axis in a state where the recess between the projecting portions of the yoke with the magnet adsorbed concentrically is opposed to each elastic arm. It is characterized in that each of the protruding portions of the yoke is engaged with each elastic arm by rotating the yoke at a predetermined angle around the central axis.

請求項４に記載の発明は、請求項２または３に記載の発明において、前記ストッパ機構
が、ヨークの各突出部の外周縁に一体突設した翼片と、該各翼片に対向してクランパの内
周面に一体突設した複数の固定ストッパ片と、前記各弾性支持板から各固定ストッパ片の
近傍まで延びる弾性変位可能な複数の可動ストッパ片とからなり、その互いに対向する可
動ストッパ片と固定ストッパ片との間に翼片の幅よりも若干広幅の空隙が形成されており
、ヨークを中心軸回りで所定角度回動させることにより、各翼片を各空隙に嵌入させるこ
とを特徴としている。 According to a fourth aspect of the present invention, in the invention according to the second or third aspect, the stopper mechanism includes a wing piece integrally projecting on an outer peripheral edge of each protruding portion of the yoke, and each wing piece. A plurality of fixed stopper pieces integrally projecting on the inner peripheral surface of the clamper and a plurality of elastically movable movable stopper pieces extending from the respective elastic support plates to the vicinity of the respective fixed stopper pieces, the movable stoppers facing each other. A gap that is slightly wider than the width of the wing piece is formed between the piece and the fixed stopper piece, and each wing piece is fitted into each gap by rotating the yoke around the central axis by a predetermined angle. It is a feature.

請求項１に記載の発明は実施の一形態（図１〜図８参照）に対応するものであって、こ
れによれば、磁石を同心状に吸着させたヨークの各凹部を各弾性アームに対向させ、該ヨ
ーク及び磁石を中心軸に嵌合させて底板上に載置した状態でそのヨークを所定角度回転さ
せるだけで、磁石及びヨークが各弾性アームと底板とで弾性的に挟持されると共に、ヨー
クの各翼片が固定ストッパと可動ストッパとの間の空隙に回動不能に嵌入されるから、ク
ランパの組立作業を容易且つ確実に行うことができる。 The invention according to claim 1 corresponds to one embodiment (see FIGS. 1 to 8), and according to this, each recess of the yoke having the magnet adsorbed concentrically is provided on each elastic arm. The magnet and the yoke are elastically held between each elastic arm and the bottom plate simply by rotating the yoke by a predetermined angle with the yoke and the magnet fitted to the central axis and placed on the bottom plate. At the same time, each blade piece of the yoke is non-rotatably fitted into the gap between the fixed stopper and the movable stopper, so that the assembly operation of the clamper can be performed easily and reliably.

また、ヨークの各突出部を各弾性アームに係合させた際に、該各弾性アームに過度の負
荷がかからず、該各弾性アームが押し曲げられて変形したり損傷されないから、磁石及び
ヨークのクランパに対する取り付けを確実に行うことができる。 Further, when the protrusions of the yoke are engaged with the elastic arms, the elastic arms are not overloaded, and the elastic arms are not bent and deformed or damaged. The yoke can be securely attached to the clamper.

更に、磁石及びヨークの厚さに寸法誤差があっても、その磁石及びヨークを各弾性アー
ムと底板とで弾性的に挟持して寸法誤差を吸収するので、ターンテーブルを高速回転させ
たときに従来のように磁石及びヨークが振動して不快な騒音を発生させることがなく、静
音性に優れたディスク装置を提供することができる。 Furthermore, even if there is a dimensional error in the magnet and yoke thickness, the magnet and yoke are elastically sandwiched between each elastic arm and the bottom plate to absorb the dimensional error, so when the turntable is rotated at high speed A disc device excellent in quietness can be provided without causing unpleasant noise due to vibration of the magnet and yoke as in the prior art.

しかも、中心軸の外径を小さくすることによって、磁石の外径も小さくなり、その磁石
を小型化してコストダウンを図ることができる。 In addition, by reducing the outer diameter of the central shaft, the outer diameter of the magnet is also reduced, and the magnet can be reduced in size and cost can be reduced.

請求項２に記載の発明は基本形態に対応するものであって、これによれば、同心状に吸
着させた磁石及びヨークを中心軸に嵌合させて底板上に載置した状態で該ヨークを所定角
度回動させるだけで、その磁石及びヨークが挟持機構とストッパ機構とにより回動不能且
つ弾性的に挟持されるようになっており、クランパの組立作業を容易且つ確実に行うこと
ができる。 The invention according to claim 2 corresponds to the basic form, and according to this, the yoke and the magnet and the yoke, which are concentrically attracted to each other, are fitted on the central axis and placed on the bottom plate. The magnet and the yoke are held in a non-rotatable and elastic manner by the clamping mechanism and the stopper mechanism simply by rotating the actuator by a predetermined angle, so that the clamper can be assembled easily and reliably. .

請求項３に記載の発明によれば、ヨークの各凹部を各弾性アームに対向させ、ヨーク及
び磁石を中心軸に嵌合させて底板上に載置した状態で該ヨークを中心軸回りで所定角度回
動させて、そのヨークの各突出部を各弾性アームに係合させるようになっており、その係
合の際に、各弾性アームに過度の負荷がかからず、該各弾性アームが押し曲げられて変形
したり損傷されることがないから、磁石及びヨークのクランパに対する取り付けを確実に
行うことができる。 According to the third aspect of the present invention, the yoke is predetermined around the central axis in a state where the concave portions of the yoke are opposed to the elastic arms, the yoke and the magnet are fitted to the central axis and placed on the bottom plate. By rotating the angle, each projecting portion of the yoke is engaged with each elastic arm. During the engagement, each elastic arm is not overloaded, and each elastic arm Since it is not deformed or damaged by being pushed and bent, the magnet and the yoke can be securely attached to the clamper.

また、磁石及びヨークの厚さに寸法誤差があっても、その磁石及びヨークを各弾性アー
ムと底板とで弾性的に挟持して寸法誤差を吸収するので、ターンテーブルを高速回転させ
たときに従来のように磁石及びヨークが振動して不快な騒音を発生させることがなく、静
音性に優れたディスク装置を提供することができる。 Even if there is a dimensional error in the thickness of the magnet and the yoke, the magnet and the yoke are elastically sandwiched between the elastic arms and the bottom plate to absorb the dimensional error, so when the turntable is rotated at high speed A disc device excellent in quietness can be provided without causing unpleasant noise due to vibration of the magnet and yoke as in the prior art.

更に、中心軸の外径を小さくすることによって、磁石の外径も小さくなり、その磁石を
小型化してコストダウンを図ることができる。 Furthermore, by reducing the outer diameter of the central axis, the outer diameter of the magnet is also reduced, and the magnet can be reduced in size and cost can be reduced.

請求項４に記載の発明によれば、同心状に吸着させた磁石及びヨークを中心軸に嵌合さ
せて底板上に載置した状態で該ヨークを所定角度回動させるだけで、そのヨークの各翼片
が可動ストッパと固定ストッパとの間の空隙に嵌入されるから、磁石及びヨークをクラン
パに不測に回動しないように確実に固定することができる。 According to the fourth aspect of the present invention, the yoke and the yoke that are concentrically attracted to each other are merely rotated by a predetermined angle while the yoke and the yoke are fitted on the central axis and placed on the bottom plate. Since each blade piece is inserted into the gap between the movable stopper and the fixed stopper, the magnet and the yoke can be reliably fixed to the clamper so as not to rotate unexpectedly.

図１〜図４は本発明の実施の一形態であるディスク装置の要部を示すものであって、ク
ランパ１７が円筒状に形成され、該クランパ１７内の下部中央に中心軸１９付き底板２６
が配置されると共に、該底板２６の外周縁とクランパ１７の内周面下部とが周方向所定間
隔をおいて架設した弾性変位可能な複数（この実施の形態では３つ）の弾性支持板２６ａ
を介して一体形成され、磁石Ｍ及びヨークＹを弾性的に挟持する挟持機構２７とその回動
を阻止するストッパ機構２８とが設けられている。上記以外の構成は図９及び図１０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。 1 to 4 show a main part of a disk apparatus according to an embodiment of the present invention. A clamper 17 is formed in a cylindrical shape, and a bottom plate 26 with a central shaft 19 is provided at the lower center of the clamper 17.
And a plurality of elastically displaceable elastic plates 26a (three in this embodiment) in which the outer peripheral edge of the bottom plate 26 and the lower portion of the inner peripheral surface of the clamper 17 are installed at a predetermined interval in the circumferential direction.
And a holding mechanism 27 for elastically holding the magnet M and the yoke Y, and a stopper mechanism 28 for preventing the rotation of the holding mechanism 27 are provided. Since the configuration other than the above is substantially the same as the configuration shown in FIGS. 9 and 10, the same reference numerals are given to the same portions and the description thereof is omitted.

図２に示すように、磁石Ｍがリング状に形成され、また、ヨークＹが、磁石Ｍの中心孔
Ｍａとほぼ同径の中心孔Ｙａを貫設した円板状ヨーク本体３０と、該ヨーク本体３０の外
周縁に周方向所定間隔をおいて一体突設した複数（この実施の形態では３つ）の突出部３
１と、該各突出部３１の外周縁に一体突設した翼片３２とを有し、各突出部３１間に凹部
３３が形成されている。 As shown in FIG. 2, the magnet M is formed in a ring shape, and the yoke Y has a disk-shaped yoke body 30 that penetrates the center hole Ya having the same diameter as the center hole Ma of the magnet M, and the yoke. A plurality (three in this embodiment) of protrusions 3 integrally protruding from the outer peripheral edge of the main body 30 at a predetermined interval in the circumferential direction.
1 and a wing piece 32 integrally projecting from the outer peripheral edge of each protrusion 31, and a recess 33 is formed between the protrusions 31.

前記挟持機構２７は、図５〜図７に示すように、クランパ１７の内周面上部に周方向所
定間隔をおいて一体突設された弾性変位可能な複数（この実施の形態では３本）の弾性ア
ーム２７Ａを有し、該各弾性アーム２７Ａが縦断面略Ｌ字状に形成され、その各弾性アー
ム２７Ａの下向きに直角に折れ曲がる先端部２７ａがヨークＹの各突出部３１に対向され
、その先端部２７ａと底板２６との間の間隔ｔ３が磁石Ｍ及びヨークＹの厚さｔ４よりも
若干小さく設定されており、その磁石Ｍ及びヨークＹを各弾性アーム２７Ａと底板２６と
で弾性的に挟持する。 As shown in FIGS. 5 to 7, the clamping mechanism 27 includes a plurality of elastically displaceable members (three in this embodiment) that are integrally protruded from the upper portion of the inner peripheral surface of the clamper 17 at a predetermined interval in the circumferential direction. Each elastic arm 27A is formed in a substantially L-shaped longitudinal section, and a distal end portion 27a bent at a right angle downward of each elastic arm 27A is opposed to each protruding portion 31 of the yoke Y, The distance t3 between the tip 27a and the bottom plate 26 is set slightly smaller than the thickness t4 of the magnet M and the yoke Y, and the magnet M and the yoke Y are made elastic by the elastic arms 27A and the bottom plate 26. Pinch.

前記ストッパ機構２８は、図５〜図７に示すように、ヨークＹの各翼片３２に対向して
クランパ１７の内側面から各弾性支持板２６ａの一側縁にかけて一体突設した固定ストッ
パ片２８Ａと、各弾性支持板２６ａの他側縁にから各固定ストッパ片２８Ａの近傍まで延
びる弾性変位可能な可動ストッパ片２８Ｂとを有し、該可動ストッパ片２８Ｂの先端部を
略三角形状に形成することにより、その可動ストッパ片２８Ｂの端面２８ａの高さｈ３が
大きく設定され、固定ストッパ片２８Ａと可動ストッパ片２８Ｂとの間の空隙３５の幅ｋ
１が翼片３２の幅ｋ２よりも若干大きく設定されている。 As shown in FIGS. 5 to 7, the stopper mechanism 28 is a fixed stopper piece integrally protruding from the inner side surface of the clamper 17 to one side edge of each elastic support plate 26a so as to face each blade piece 32 of the yoke Y. 28A and an elastically displaceable movable stopper piece 28B extending from the other side edge of each elastic support plate 26a to the vicinity of each fixed stopper piece 28A, and the tip of the movable stopper piece 28B is formed in a substantially triangular shape. As a result, the height h3 of the end face 28a of the movable stopper piece 28B is set large, and the width k of the gap 35 between the fixed stopper piece 28A and the movable stopper piece 28B.
1 is set slightly larger than the width k2 of the blade piece 32.

クランパ１７の組立手順を説明すると、図８（ａ）に示すように、磁石Ｍをを同心状に
吸着させたヨークＹの各凹部３３を各弾性アーム２７Ａに対向させた状態でそのヨークＹ
及び磁石Ｍの中心孔Ｍａ，Ｙａを中心軸１９に嵌合させて底板２６上に載置し、ヨークＹ
を中心軸１９回りで矢印ｅに所定角度回動させ、図８（ｂ）に示すように、ヨークＹの各
突出部３１を各弾性アーム２７Ａの先端部２７ａに係合させることにより、該各弾性アー
ム２７Ａと底板２６とで磁石Ｍ及びヨークＹを弾性的に挟持し（図７参照）、それとほぼ
同時に、各翼片３２により各可動ストッパ片２８Ｂの先端部が押し下げられ、その各翼片
３２を空隙３５に嵌入させてヨークＹの回動を阻止する（図６参照）。 The assembly procedure of the clamper 17 will be described. As shown in FIG. 8A, the yoke Y with the magnet M attracted concentrically to each recess 33 is opposed to each elastic arm 27A.
And the center holes Ma and Ya of the magnet M are fitted to the center shaft 19 and placed on the bottom plate 26, and the yoke Y
Is rotated by a predetermined angle around the central axis 19 in the direction of an arrow e, and each protrusion 31 of the yoke Y is engaged with the tip 27a of each elastic arm 27A as shown in FIG. The magnet M and the yoke Y are elastically sandwiched between the elastic arm 27A and the bottom plate 26 (see FIG. 7), and almost simultaneously with this, the tip of each movable stopper piece 28B is pushed down by each wing piece 32, and each wing piece. 32 is inserted into the gap 35 to prevent the yoke Y from rotating (see FIG. 6).

上記構成によれば、磁石Ｍ及びヨークＹを底板２６上に載置して回動させるだけで、そ
の磁石Ｍ及びヨークＹが各弾性アーム２７Ａと底板２６とで弾性的に挟持されると共に、
ヨークＹの各翼片３２が空隙３５に回動不能に嵌入されるから、クランパ１７の組立作業
を容易且つ確実に行うことができる。 According to the above configuration, the magnet M and the yoke Y are elastically sandwiched between the elastic arms 27A and the bottom plate 26 only by placing the magnet M and the yoke Y on the bottom plate 26 and rotating them.
Since each blade piece 32 of the yoke Y is non-rotatably inserted into the gap 35, the assembly work of the clamper 17 can be performed easily and reliably.

また、ヨークＹの各突出部３１を各弾性アーム２７Ａに係合させた際に、各弾性アーム
２７Ａに過度の負荷がかからず、該各弾性アーム２７Ａが押し曲げられて変形したり損傷
されないから、磁石Ｍ及びヨークＹのクランパに対する取り付けを確実に行うことができ
る。 In addition, when the protrusions 31 of the yoke Y are engaged with the elastic arms 27A, the elastic arms 27A are not excessively loaded, and the elastic arms 27A are not bent and deformed or damaged. Thus, the magnet M and the yoke Y can be securely attached to the clamper.

更に、磁石Ｍ及びヨークＹの厚さｔ４に寸法誤差があっても、その磁石Ｍ及びヨークＹ
を各弾性アーム２７Ａと底板２６とで弾性的に挟持して寸法誤差を吸収するので、ターン
テーブル１４を高速回転させたときに従来のように磁石Ｍ及びヨークＹが振動して不快な
騒音を発生させることがなく、静音性に優れたディスク装置を提供することができる。 Furthermore, even if there is a dimensional error in the thickness t4 of the magnet M and the yoke Y, the magnet M and the yoke Y
Are elastically sandwiched between the elastic arms 27A and the bottom plate 26 to absorb dimensional errors. Therefore, when the turntable 14 is rotated at a high speed, the magnet M and the yoke Y vibrate as in the conventional case, causing unpleasant noise. It is possible to provide a disk device that is excellent in quietness without being generated.

しかも、中心軸１９の外径を小さくすることによって、磁石Ｍの外径も小さくなり、そ
の磁石Ｍを小型化してコストダウンを図ることができる。 In addition, by reducing the outer diameter of the central shaft 19, the outer diameter of the magnet M is also reduced, and the magnet M can be reduced in size and the cost can be reduced.

（ａ）は本発明の実施の一形態であるディスク装置の要部を示す縦断面図、（ｂ）は同要部の平面図である。(A) is a longitudinal cross-sectional view which shows the principal part of the disc apparatus which is one Embodiment of this invention, (b) is a top view of the principal part. 同分解斜視図である。It is the same exploded perspective view. 同クランパの底面側斜視図である。It is a bottom side perspective view of the same clamper. （ａ）は同クランパの縦断面図、（ｂ）はＡ−Ａ矢視図、（ｃ）はＢ−Ｂ矢視図である。(A) is a longitudinal cross-sectional view of the clamper, (b) is an AA arrow view, (c) is a BB arrow view. 同クランパの要部拡大斜視図である。It is a principal part expansion perspective view of the clamper. 図５のＣ−Ｃ矢視図である。It is CC arrow line view of FIG. 図５のＤ−Ｄ矢視図である。FIG. 6 is a DD arrow view of FIG. 5. （ａ）は組立手順の前半を示す平面図、（ｂ）は同手順の後半を示す平面図である。(A) is a top view which shows the first half of an assembly procedure, (b) is a top view which shows the second half of the procedure. ディスク装置の概略縦断面図である。1 is a schematic longitudinal sectional view of a disk device. 従来の一例を示す縦断面図である。It is a longitudinal cross-sectional view which shows an example of the past. （ａ）及び（ｂ）は従来の他の例を示す縦断面図である。(A) And (b) is a longitudinal cross-sectional view which shows the other example of the past.

Explanation of symbols

２筐体
１２光ピックアップ
１４ターンテーブル
１７クランパ
１９中心軸
２６底板
２６ａ弾性支持板
２７挟持機構
２７Ａ弾性アーム
２８ストッパ機構
２８Ａ固定ストッパ片
２８Ｂ可動ストッパ片
３０ヨーク本体
３１突出部
３２翼片
３３凹部
３５空隙
2 Housing 12 Optical Pickup 14 Turntable 17 Clamper 19 Center Axis 26 Bottom Plate 26a Elastic Support Plate 27 Holding Mechanism 27A Elastic Arm 28 Stopper Mechanism 28A Fixed Stopper Piece 28B Movable Stopper Piece 30 York Main Body 31 Projection Part 32 Wing Piece 33 Concave 35 Gap

Claims

A turntable and an optical pickup are arranged in the housing, and a clamper having a magnet and a yoke is arranged in the housing so as to be able to move up and down within a certain range so as to face the turntable. In a disk device that is attracted to a turntable, rotates the disk at a high speed by the turntable, and reads information recorded on the disk by an optical pickup, the clamper is formed in a cylindrical shape, and a lower part in the clamper A bottom plate with a central shaft is disposed in the center, and an outer peripheral edge of the bottom plate and a lower portion of the inner peripheral surface of the clamper are integrally formed via a plurality of elastically displaceable elastic support plates installed at predetermined intervals in the circumferential direction. A plurality of elastic arms which are elastically displaceable at predetermined intervals in the circumferential direction at the upper part of the inner peripheral surface of the clamper, and the yoke A circular yoke main body penetrating through the central hole, a plurality of protrusions integrally protruding from the outer peripheral edge of the yoke main body at predetermined intervals in the circumferential direction facing the elastic arms, A plurality of fixed stopper pieces integrally protruding on the inner peripheral surface of the clamper so as to face each of the blade pieces, and each fixed stopper piece from each elastic support plate. A plurality of movable stopper pieces that are elastically displaceable extending to the vicinity of each other are provided, and a gap that is slightly wider than the width of the wing piece is formed between the movable stopper piece and the fixed stopper piece facing each other. The yoke and the central hole of the magnet are fitted to the central axis in a state where the recess between the projecting portions of the yoke on which the magnet is attracted concentrically is opposed to each elastic arm, and placed on the bottom plate. Rotate each projecting part by a predetermined angle around the central axis By engaging, the magnet and the yoke are elastically sandwiched between the elastic arms and the bottom plate, and at the same time, the blades are fitted into the gaps to prevent the yoke from rotating. Disk unit.

A turntable and an optical pickup are arranged in the housing, and a clamper having a magnet and a yoke is arranged in the housing so as to be able to move up and down within a certain range so as to face the turntable. In a disk device that is attracted to a turntable, rotates the disk at a high speed by the turntable, and reads information recorded on the disk by an optical pickup, the clamper is formed in a cylindrical shape, and a lower part in the clamper A bottom plate with a central shaft is disposed in the center, and an outer peripheral edge of the bottom plate and a lower portion of the inner peripheral surface of the clamper are integrally formed via a plurality of elastically displaceable elastic support plates installed at predetermined intervals in the circumferential direction. A yoke with a central hole penetrating through and a ring magnet concentrically attracted to the yoke are fitted on the central axis and placed on the bottom plate. By predetermined angle rotating the click around the center axis, the disk apparatus characterized by a stopper mechanism is provided to prevent pinching mechanism for pinching the magnet and yoke resiliently and its rotation.

The clamping mechanism has a plurality of elastically displaceable elastic arms integrally projecting at a predetermined interval in the circumferential direction on the inner peripheral surface of the clamper, and the yoke has a circular yoke main body penetrating a central hole And a plurality of projecting portions integrally projecting from the outer peripheral edge of the yoke body at predetermined intervals in the circumferential direction so as to oppose each elastic arm, and each of the yokes having magnets adsorbed concentrically. With the recess between the projecting parts facing each elastic arm, the yoke and the center hole of the magnet are fitted to the center axis and placed on the bottom plate, and the yoke is rotated by a predetermined angle around the center axis 3. The disk device according to claim 2, wherein each projecting portion of the yoke is engaged with each elastic arm.

The stopper mechanism includes a blade piece integrally projecting on the outer peripheral edge of each protrusion of the yoke, a plurality of fixed stopper pieces integrally projecting on the inner peripheral surface of the clamper so as to face the blade pieces, and the elastic members. It consists of a plurality of elastically displaceable movable stopper pieces extending from the support plate to the vicinity of each fixed stopper piece, and a gap slightly wider than the width of the wing piece is formed between the movable stopper piece and the fixed stopper piece facing each other. 4. The disk device according to claim 2, wherein the disk device is formed and each blade piece is fitted into each gap by rotating the yoke at a predetermined angle around the central axis.