JP2001351250A - Disk recording or reproducing device having mechanism for adjusting pickup inclination - Google Patents
Disk recording or reproducing device having mechanism for adjusting pickup inclinationInfo
- Publication number
- JP2001351250A JP2001351250A JP2000170239A JP2000170239A JP2001351250A JP 2001351250 A JP2001351250 A JP 2001351250A JP 2000170239 A JP2000170239 A JP 2000170239A JP 2000170239 A JP2000170239 A JP 2000170239A JP 2001351250 A JP2001351250 A JP 2001351250A
- Authority
- JP
- Japan
- Prior art keywords
- chassis
- bracket
- guide shaft
- pickup
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Moving Of Heads (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ディスクの信号面
に対してピックアップを傾ける傾き調整機構を具えたデ
ィスク記録又は再生装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk recording or reproducing apparatus provided with a tilt adjusting mechanism for tilting a pickup with respect to a signal surface of a disk.
【０００２】[0002]
【従来の技術】図７は、従来のディスク記録又は再生装
置の斜視図である。シャーシ(１)上には、周知の如くデ
ィスク(７)が載置されるターンテーブル(13)と、該ター
ンテーブル(13)に接近離間可能に設けられたピックアッ
プ(２)を具える。ピックアップ(２)は上面に対物レンズ
(22)を具え、シャーシ(１)上の２本のガイド軸(４)(４)
に移動を案内される。各ガイド軸(４)の両端部は、シャ
ーシ(１)上のブラケット(９)(９)に嵌まる。シャーシ
(１)上の側部には、モータ(Ｍ)が設けられ、該モータ
(Ｍ)は歯車機構(21)を介して、ピックアップ(２)の側部
に設けられたラック(20)に連繋する。モータ(Ｍ)に通電
すると、歯車機構(21)の各ギアが回転し、ピックアップ
(２)が移動する。2. Description of the Related Art FIG. 7 is a perspective view of a conventional disk recording or reproducing apparatus. As is well known, a turntable (13) on which a disk (7) is placed and a pickup (2) provided so as to be able to approach and separate from the turntable (13) are provided on the chassis (1). Pickup (2) has an objective lens on the top
(22), two guide shafts (4) (4) on the chassis (1)
You will be guided to move. Both ends of each guide shaft (4) fit into brackets (9) (9) on the chassis (1). Chassis
(1) On the upper side, a motor (M) is provided.
(M) is connected via a gear mechanism (21) to a rack (20) provided on the side of the pickup (2). When the motor (M) is energized, each gear of the gear mechanism (21) rotates and the pickup
(2) moves.
【０００３】図８は、ディスク(７)の裏面図である。デ
ィスク(７)の信号面には、円周方向に沿って複数のピッ
ト(73)(73)が凹設され、該ピット(73)にレーザー光を当
てたときと、ピット(73)以外の箇所にレーザー光を当て
たときとでは反射光の強さが異なる。これにより、０と
１からなるデジタル信号を再生する。近年、ディスク
(７)には信号が高密度記録されるものがある。該ディス
クでは図８に示すディスク半径方向のピット(73)(73)の
間隔Ｈが狭い。この為、レーザー光の光軸がディスク
(７)の信号面に対して僅かに傾いた場合、誤った位置の
ピット(73)を照射し、信号を正しく再生できない虞れが
ある。そこで、シャーシ(１)上にピックアップ(２)の傾
きを調整する機構を設け、ディスク記録又は再生装置を
製造する工程に於いて、ピックアップ(２)の傾きを微調
整し、高密度記録されたディスクをスムーズに再生する
ことが提案されている。FIG. 8 is a rear view of the disk (7). A plurality of pits (73) (73) are recessed along the circumferential direction on the signal surface of the disk (7), and when the pit (73) is irradiated with a laser beam, The intensity of the reflected light is different from when a laser beam is applied to the location. Thereby, a digital signal composed of 0 and 1 is reproduced. In recent years, discs
In (7), there is a type in which a signal is recorded at a high density. In this disk, the interval H between the pits (73) and (73) in the disk radial direction shown in FIG. 8 is narrow. Therefore, the optical axis of the laser beam is
If the signal surface is slightly inclined with respect to the signal surface of (7), the pit (73) at the wrong position is irradiated, and there is a possibility that the signal cannot be correctly reproduced. Therefore, a mechanism for adjusting the tilt of the pickup (2) is provided on the chassis (1), and in the process of manufacturing a disk recording or reproducing device, the tilt of the pickup (2) is finely adjusted to achieve high-density recording. It has been proposed to play a disc smoothly.
【０００４】図９は、調整機構(５)の側面断面図であ
る。シャーシ(１)にはガイド軸(４)の一端部が嵌まる凹
部(90)が設けられたブラケット(９)が載置され、該ブラ
ケット(９)はシャーシ(１)に螺合する止めビス(30)によ
り取り付けられる。凹部(90)内には、ガイド軸(４)を上
向きに付勢する圧縮バネ(50)が設けられ、ブラケット
(９)には、圧縮バネ(50)に抗してガイド軸(４)を押し込
む調整ネジ(６)が螺合している。調整ネジ(６)を回す
と、ガイド軸(４)の端部が昇降するから、ガイド軸(４)
は、ピックアップ(２)の移動方向を含みシャーシ(１)に
直交する面内にて傾く。これにより、ピックアップ(２)
の傾きを微調整できる。FIG. 9 is a side sectional view of the adjusting mechanism (5). A bracket (9) provided with a recess (90) into which one end of the guide shaft (4) fits is mounted on the chassis (1), and the bracket (9) is a stopper screw screwed into the chassis (1). Installed by (30). A compression spring (50) for urging the guide shaft (4) upward is provided in the recess (90).
An adjusting screw (6) for pushing the guide shaft (4) against the compression spring (50) is screwed into (9). Turning the adjusting screw (6) raises and lowers the end of the guide shaft (4).
Is inclined in a plane including the moving direction of the pickup (2) and orthogonal to the chassis (1). Thereby, the pickup (2)
You can fine-tune the inclination of.
【０００５】[0005]
【発明が解決しようとする課題】従来にあっては、ブラ
ケット(９)をシャーシ(１)にビス(30)止めする際に、ブ
ラケット(９)がシャーシ(１)に平行な面内、即ち水平面
内にて振れ移動する虞れがある。これでは、ピックアッ
プ(２)の傾きは正確に調整できても、ガイド軸(４)が水
平面内にて振れ移動する虞れがあり、ピックアップ(２)
がディスク中心に向かって正確に移動できない。また、
ガイド軸(４)は凹部(90)に嵌まっており、凹部(90)とガ
イド軸(４)との間には側方に僅かな隙間がある。従っ
て、調整ネジ(６)がガイド軸(４)を正確に下方に押し込
まないと、ガイド軸(４)が該隙間内にて振れ移動する虞
れがある。本発明の目的は、ピックアップの傾き調整機
構をシャーシ上に正確に位置決めし、且つガイド軸がシ
ャーシに略平行な面内にて不用意に振れ移動することを
防ぐことにある。Conventionally, when the bracket (9) is fixed to the chassis (1) with screws (30), the bracket (9) is in a plane parallel to the chassis (1), that is, There is a risk of swinging movement in a horizontal plane. In this case, even though the inclination of the pickup (2) can be adjusted accurately, there is a possibility that the guide shaft (4) swings and moves in a horizontal plane.
Cannot move accurately toward the center of the disc. Also,
The guide shaft (4) is fitted in the concave portion (90), and there is a slight gap laterally between the concave portion (90) and the guide shaft (4). Therefore, if the adjusting screw (6) does not accurately push the guide shaft (4) downward, the guide shaft (4) may swing in the gap. SUMMARY OF THE INVENTION It is an object of the present invention to accurately position a tilt adjustment mechanism of a pickup on a chassis and prevent a guide shaft from inadvertently swinging in a plane substantially parallel to the chassis.
【０００６】[0006]
【課題を解決する為の手段】ピックアップ(２)の移動方
向を含みシャーシ(１)上面に直交した面内にてガイド軸
(４)の傾き角度を変える調整機構(５)は、シャーシ(１)
上にてブラケット(９)の位置を定める第１の位置決め機
構(３)と、シャーシ(１)に略平行な面内にて調整ネジ
(６)の位置を定め、調整ネジ(６)の進行方向をガイド軸
(４)の中心Ｃに正確に向ける第２の位置決め機構(８)を
具えている。A guide shaft is provided in a plane including the moving direction of the pickup (2) and orthogonal to the upper surface of the chassis (1).
The adjustment mechanism (5) for changing the inclination angle of (4) is the chassis (1)
A first positioning mechanism (3) for determining the position of the bracket (9) above, and an adjusting screw in a plane substantially parallel to the chassis (1).
Determine the position of (6) and adjust the direction of travel of the adjusting screw (6) to the guide shaft.
It has a second positioning mechanism (8) that is accurately directed to the center C of (4).
【０００７】[0007]
【作用及び効果】第１の位置決め機構(３)によりブラケ
ット(９)はシャーシ(１)上の正確な位置に取り付けられ
るから、ガイド軸(４)がシャーシ(１)に平行な面内にて
振れ移動する虞れはない。また、第２の位置決め機構
(８)により、調整ネジ(６)はその進行方向がガイド軸
(４)の中心Ｃを向く。これにより、ガイド軸(４)がシャ
ーシ(１)に略平行な面内にて不用意に振れ移動すること
は防止される。[Operation and Effect] Since the bracket (9) is mounted at a precise position on the chassis (1) by the first positioning mechanism (3), the guide shaft (4) is positioned within a plane parallel to the chassis (1). There is no risk of swinging movement. Also, a second positioning mechanism
According to (8), the adjusting screw (6) moves in the guide shaft
It faces the center C of (4). This prevents the guide shaft (4) from accidentally swinging and moving in a plane substantially parallel to the chassis (1).
【０００８】[0008]
【発明の実施の形態】以下、本発明の一例を図を用いて
詳述する。図１は、ディスク記録又は再生装置の平面図
である。本願にあっては、ガイド軸(４)の傾き調整機構
(５)を位置決めする点に特徴がある。従来と同様に、シ
ャーシ(１)に開設された開口(14)の側方には、ディスク
(７)を回転させるターンテーブル(13)が設けられ、ディ
スク(７)にビームを発射する対物レンズ(22)を具えたピ
ックアップ(２)がターンテーブル(13)に接近離間可能に
配備されている。ピックアップ(２)は、両端部をブラケ
ット(９)(９)に支持されたガイド軸(４)(４)に嵌まっ
て、レンズ(22)とターンテーブル(13)の夫々の中心を結
ぶ仮想線Ｌ上を本来移動する。シャーシ(１)上にて開口
(14)の側方には、モータ(17)が設けられ、該モータ(17)
は中間ギア(15)を介してピックアップ(２)に連繋する。
モータ(17)に通電すると、ピックアップ(２)が移動す
る。シャーシ(１)の外周縁は上向きに折曲されて立壁(1
2)(12)を構成し、該立壁(12)がシャーシ(１)の外方に配
備されるキャビネット(図示せず)に取り付けられる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of a disk recording or reproducing apparatus. In the present application, a mechanism for adjusting the inclination of the guide shaft (4)
It is characterized in that (5) is positioned. As before, a disc is placed beside the opening (14) opened in the chassis (1).
A turntable (13) for rotating (7) is provided, and a pickup (2) having an objective lens (22) for emitting a beam to the disk (7) is provided so as to be able to approach and separate from the turntable (13). I have. The pickup (2) has both ends fitted on guide shafts (4) and (4) supported by brackets (9) and (9), and connects the center of the lens (22) and the center of the turntable (13). The original movement on the line L is performed. Opening on chassis (1)
A motor (17) is provided on the side of (14), and the motor (17)
Is connected to the pickup (2) via the intermediate gear (15).
When power is supplied to the motor (17), the pickup (2) moves. The outer peripheral edge of the chassis (1) is bent upward and
2) Constituting (12), the upright wall (12) is attached to a cabinet (not shown) provided outside the chassis (1).
【０００９】図２は、ブラケット(９)を図１のＡ方向か
ら見た側面断面図である。ブラケット(９)はシャーシ
(１)の下方から螺合する止めビス(30)によりシャーシ
(１)に取り付けられる。ブラケット(９)にはガイド軸
(４)の端部が嵌まる凹部(90)が設けられ、該凹部(90)内
にはガイド軸(４)の上向きに付勢する圧縮バネ(50)が配
備されている。ブラケット(９)の天面には、受け板(80)
が被さり、該受け板(80)は板止めビス(85)によりブラケ
ット(９)に取り付けられる。該受け板(80)には調整ネジ
(６)が螺合し、該調整ネジ(６)の下端がガイド軸(４)の
上端に接する。調整ネジ(６)の進行方向は、本来ガイド
軸(４)の中心Ｃを通る。FIG. 2 is a side sectional view of the bracket 9 viewed from the direction A in FIG. Bracket (9) is chassis
(1) Chassis with stop screw (30) screwed from below
It is attached to (1). Guide shaft on bracket (9)
A recess (90) into which the end of (4) fits is provided, and a compression spring (50) for urging the guide shaft (4) upward is provided in the recess (90). On the top of the bracket (9), a receiving plate (80)
The receiving plate (80) is attached to the bracket (9) by a plate fixing screw (85). Adjustment screw on the receiving plate (80)
(6) is screwed, and the lower end of the adjusting screw (6) contacts the upper end of the guide shaft (4). The traveling direction of the adjusting screw (6) originally passes through the center C of the guide shaft (4).
【００１０】図３は、ブラケット(９)、ガイド軸(４)、
受け板(80)の分解斜視図であり、シャーシ(１)を一部破
断している。シャーシ(１)には、ブラケット(９)の一部
が嵌まる透孔(10)が開設されており、ブラケット(９)か
らは透孔(10)に嵌まる舌片(91)が突出している。舌片(9
1)は上面がシャーシ(１)上面と同一面内に位置する、即
ち、舌片(91)はガイド軸(４)よりも下方に配備される。
舌片(91)は円弧状に形成されて、透孔(10)の端縁(11)に
接することによりブラケット(９)のシャーシ(１)面に於
ける水平位置が決定される。FIG. 3 shows a bracket (9), a guide shaft (4),
FIG. 4 is an exploded perspective view of the receiving plate (80), with a part of the chassis (1) broken away. The chassis (1) has a through hole (10) into which a part of the bracket (9) fits, and a tongue piece (91) that fits into the through hole (10) projects from the bracket (9). I have. Tongue piece (9
In (1), the upper surface is located in the same plane as the upper surface of the chassis (1), that is, the tongue piece (91) is provided below the guide shaft (4).
The tongue piece (91) is formed in an arc shape, and the horizontal position of the bracket (9) on the chassis (1) surface is determined by contacting the edge (11) of the through hole (10).
【００１１】凹部(90)は、ガイド軸(４)が僅かに余裕を
持って嵌まる幅に形成された案内部(93)と、圧縮バネ(5
0)が嵌まり案内部(93)よりも膨らんで形成された収納部
(94)を連ねて設けている。ブラケット(９)の上面には、
受け板(80)に嵌まる位置決め突起(92)(92a)が突出し、
該位置決め突起(92)(92a)の側方には、板止めビス(85)
が螺合するネジ孔(82)が設けられている。受け板(80)に
は、位置決め突起(92)(92a)に嵌まる切欠き(81)(81)が
開設され、受け板(80)上にて切欠き(81)(81)の両側に
は、調整ネジ(６)が螺合するビス孔(82)及び板止めビス
(85)が通る貫通孔(83)が開設されている。The recess (90) has a guide portion (93) formed to have a width in which the guide shaft (4) fits with a margin, and a compression spring (5).
(0) fits into the storage section formed to be larger than the guide section (93)
(94) are provided in a row. On the upper surface of the bracket (9),
The positioning projections (92) and (92a) that fit into the receiving plate (80) project,
Beside the positioning projections (92) and (92a), plate fixing screws (85)
Are provided with screw holes (82). The receiving plate (80) has cutouts (81) and (81) that fit into the positioning projections (92) and (92a), and the cutouts (81) and (81) Are the screw holes (82) into which the adjustment screws (6) are screwed and the plate fixing screws
A through hole (83) through which (85) passes is opened.
【００１２】ブラケットの取付け (第１の位置決め機構)ブラケット(９)をシャーシ(１)に
取り付けるには、以下の手順にて行なう。図４は、シャ
ーシ(１)の裏面図である。先ず、シャーシ(１)を裏返し
て、ブラケット(９)をシャーシ(１)の下方から透孔(10)
に挿入する。舌片(91)が透孔(10)に嵌まった状態にて、
ブラケット(９)を治具(98)にて固定し、ブラケット(９)
の水平面内に於ける回転を規制する。止めビス(30)をシ
ャーシ(１)を通って、ブラケット(９)に螺合させる。止
めビス(30)は締め付けに伴って時計方向に回転するか
ら、止めビス(30)の頭部がシャーシ(１)に接すると、シ
ャーシ(１)が止めビス(30)の頭部との摩擦により、時計
方向に回転する。透孔(10)の端縁(11)が舌片(91)に接
し、これによりブラケット(９)はシャーシ(１)上にて位
置決めされる。舌片(91)は円弧状に形成されているか
ら、舌片(91)は必ず端縁(11)上の１点にて当接し、位置
決めされる。即ち、ブラケット(９)の舌片(91)と端縁(1
1)とによって第１の位置決め機構(３)を構成する。ブラ
ケット(９)を止めビス(30)にて締結するのと同時に、ブ
ラケット(９)のシャーシ(１)上の位置が決定されるの
で、位置決めの手間が省ける。[0012] To attach the mounting bracket (first positioning mechanism) bracket (9) to the chassis (1), carried out by the following procedure. FIG. 4 is a rear view of the chassis (1). First, the chassis (1) is turned over, and the bracket (9) is inserted from below the chassis (1) through the through-hole (10).
Insert With the tongue piece (91) fitted in the through hole (10),
Fix the bracket (9) with the jig (98),
Regulates the rotation in the horizontal plane. The stop screw (30) is screwed into the bracket (9) through the chassis (1). Since the stop screw (30) rotates clockwise with the tightening, when the head of the stop screw (30) contacts the chassis (1), the chassis (1) frictions with the head of the stop screw (30). Rotates clockwise. The edge (11) of the through hole (10) contacts the tongue piece (91), whereby the bracket (9) is positioned on the chassis (1). Since the tongue piece (91) is formed in an arc shape, the tongue piece (91) always comes into contact at one point on the edge (11) and is positioned. That is, the tongue piece (91) and the edge (1
1) constitutes a first positioning mechanism (3). Since the position of the bracket (9) on the chassis (1) is determined at the same time when the bracket (9) is fastened with the fixing screw (30), the trouble of positioning can be saved.
【００１３】(第２の位置決め機構)次に、図３に示すよ
うに、シャーシ(１)を上下反転し、圧縮バネ(50)及びガ
イド軸(４)が挿入されたブラケット(９)に受け板(80)を
被せ、貫通孔(83)を通って板止めビス(85)をブラケット
(９)のビス孔(82)に螺合させる。板止めビス(85)は締め
付けに伴って時計方向に回転し、板止めビス(85)の頭部
が受け板(80)に接すると、受け板(80)が板止めビス(85)
の頭部との摩擦により、時計方向に回転する。図５は、
受け板(80)の平面図であるが、受け板(80)の時計方向側
の切欠き(81)が位置決め突起(92)に接し、これにより受
け板(80)はシャーシ(１)面に平行な面内にて位置決めさ
れる。即ち、位置決め突起(92)と受け板(80)の切欠き(8
1)によって、第２の位置決め機構(８)を構成する。受け
板(80)を板止めビス(85)によって締結するのと同時に、
受け板(80)のシャーシ(１)に略平行な面内に於ける位置
が決定されるので、位置決めの手間が省ける。ブラケッ
ト(９)を取り付けた後に、調整ネジ(６)を回転させる
と、ガイド軸(４)はピックアップ(２)の移動方向を含み
シャーシ(１)に直交する面内にて傾き調整される。(Second Positioning Mechanism) Next, as shown in FIG. 3, the chassis (1) is turned upside down and received on a bracket (9) into which a compression spring (50) and a guide shaft (4) are inserted. Cover the plate (80), pass the through hole (83) and bracket the plate fixing screw (85)
Screw it into the screw hole (82) of (9). The plate stopper screw (85) rotates clockwise with the tightening, and when the head of the plate stopper screw (85) contacts the receiving plate (80), the receiving plate (80) is fixed to the plate stopper screw (85).
It rotates clockwise due to friction with the head of the. FIG.
FIG. 5 is a plan view of the receiving plate (80), wherein a notch (81) on the clockwise side of the receiving plate (80) is in contact with the positioning projection (92). It is positioned in a parallel plane. That is, the notch (8) of the positioning projection (92) and the receiving plate (80)
1) constitutes a second positioning mechanism (8). At the same time as fastening the receiving plate (80) with the plate fixing screw (85),
Since the position of the receiving plate (80) in the plane substantially parallel to the chassis (1) is determined, the trouble of positioning can be saved. When the adjustment screw (6) is rotated after the bracket (9) is attached, the inclination of the guide shaft (4) is adjusted in a plane including the moving direction of the pickup (2) and orthogonal to the chassis (1).
【００１４】図６は、図３をＣ−Ｃ線を含む面内にて破
断した断面図である。受け板(80)をシャーシ(１)面に平
行な面内にて位置決めすることにより、調整ネジ(６)の
進行方向はガイド軸(４)の中心Ｃを向く。仮に、受け板
(80)がシャーシ(１)面に平行な面内にて正確に位置決め
されないと、図６に一点鎖線で示すように、調整ネジ
(６)の進行方向がガイド軸(４)の中心Ｃから外れる。前
記の如く、凹部(90)の案内部(93)とガイド軸(４)との間
には僅かな隙間があるが、調整ネジ(６)の進行方向がガ
イド軸(４)の中心Ｃからズレると、調整ネジ(６)はガイ
ド軸(４)の偏心箇所を押すから、ガイド軸(４)が該隙間
内で、ガイド軸(４)に沿う方向に直交して横振れする。
ピックアップ(２)はガイド軸(４)に沿って移動するか
ら、これでは、ピックアップ(２)の移行路は、図１に示
すようにディスク中心を向いた仮想線Ｌからズレる。従
って、調整ネジ(６)の進行方向をガイド軸(４)の中心Ｃ
に正確に向け、ガイド軸(４)が案内部(93)内にてガイド
軸(４)に沿う方向に直交して横振れすることを規制して
いる。FIG. 6 is a sectional view of FIG. 3 cut along a plane including the line CC. By positioning the receiving plate (80) in a plane parallel to the surface of the chassis (1), the traveling direction of the adjusting screw (6) is directed to the center C of the guide shaft (4). Temporarily
If the (80) is not positioned correctly in a plane parallel to the chassis (1) plane, as shown by the dashed line in FIG.
The traveling direction of (6) deviates from the center C of the guide shaft (4). As described above, there is a slight gap between the guide portion (93) of the concave portion (90) and the guide shaft (4), but the traveling direction of the adjusting screw (6) is from the center C of the guide shaft (4). If it is displaced, the adjusting screw (6) pushes the eccentric portion of the guide shaft (4), so that the guide shaft (4) oscillates in the gap perpendicular to the direction along the guide shaft (4).
Since the pickup (2) moves along the guide shaft (4), the transition path of the pickup (2) is shifted from the imaginary line L facing the disk center as shown in FIG. Therefore, the traveling direction of the adjusting screw (6) is adjusted to the center C of the guide shaft (4).
The guide shaft (4) is restricted from swaying in the guide portion (93) perpendicularly to the direction along the guide shaft (4).
【００１５】斯種装置は小型化が所望されており、特に
ディスク外周部側のブラケット(９)の近傍にはシャーシ
(１)の立壁(12)が立設している。ブラケット(９)を位置
決めするには、ブラケット(９)をガイド軸(４)に沿う方
向に長くすればよいが、装置の小型化に反するので、上
記の如く第１の位置決め機構(３)を設けている。これに
より、装置の小型化を達成している。また、第１の位置
決め機構(３)を構成する舌片(91)の上面がシャーシ(１)
上面と同一面内に位置することにより、舌片(91)はピッ
クアップ(２)の移行路よりも下方に配備される。これに
より、第１の位置決め機構(３)を設けても、装置全体が
厚くならない。本例にあっては、圧縮バネ(50)によりガ
イド軸(４)を上向きに付勢し、調整ネジ(６)にてガイド
軸(４)を下向きに押すとしている。これに代えて、圧縮
バネ(50)によりガイド軸(４)を下向きに付勢し、調整ネ
ジ(６)をシャーシ(１)の下方から螺合させて、該調整ネ
ジ(６)にてガイド軸(４)を上向きに押してもよい。Such a device is desired to be miniaturized. In particular, a chassis is provided near the bracket (9) on the outer peripheral side of the disk.
The standing wall (12) of (1) stands. In order to position the bracket (9), the bracket (9) may be lengthened in the direction along the guide shaft (4). However, since it is against the miniaturization of the device, the first positioning mechanism (3) is used as described above. Provided. As a result, the size of the device is reduced. The upper surface of the tongue piece (91) constituting the first positioning mechanism (3) is located on the chassis (1).
By being located in the same plane as the upper surface, the tongue piece (91) is provided below the transition path of the pickup (2). Thus, even if the first positioning mechanism (3) is provided, the entire device does not become thick. In the present example, the guide shaft (4) is urged upward by the compression spring (50), and the guide shaft (4) is pushed downward by the adjusting screw (6). Instead, the guide shaft (4) is urged downward by the compression spring (50), the adjusting screw (6) is screwed from below the chassis (1), and the guide screw is guided by the adjusting screw (6). The shaft (4) may be pushed upward.
【００１６】上記実施例の説明は、本発明を説明するた
めのものであって、特許請求の範囲に記載の発明を限定
し、或は範囲を減縮する様に解すべきではない。又、本
発明の各部構成は上記実施例に限らず、特許請求の範囲
に記載の技術的範囲内で種々の変形が可能であることは
勿論である。The description of the above embodiments is for the purpose of illustrating the present invention and should not be construed as limiting the invention described in the appended claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made within the technical scope described in the claims.
【図１】ディスク記録又は再生装置の平面図である。FIG. 1 is a plan view of a disk recording or reproducing apparatus.
【図２】ブラケットを図１のＡ方向から見た側面断面図
である。FIG. 2 is a side sectional view of the bracket as viewed from a direction A in FIG. 1;
【図３】ブラケット、ガイド軸、受け板の分解斜視図で
ある。FIG. 3 is an exploded perspective view of a bracket, a guide shaft, and a receiving plate.
【図４】シャーシの裏面図である。FIG. 4 is a rear view of the chassis.
【図５】受け板の平面図である。FIG. 5 is a plan view of a receiving plate.
【図６】図３をＣ−Ｃ線を含む面内にて破断した断面図
である。FIG. 6 is a cross-sectional view of FIG. 3 cut in a plane including a line CC.
【図７】従来のディスク記録又は再生装置の斜視図であ
る。FIG. 7 is a perspective view of a conventional disk recording or reproducing apparatus.
【図８】ディスクの裏面図である。FIG. 8 is a rear view of the disk.
【図９】調整機構の側面断面図である。FIG. 9 is a side sectional view of the adjustment mechanism.
(１) シャーシ (２) ピックアップ (３) 第１の位置決め機構 (４) ガイド軸 (５) 調整機構 (６) 調整ネジ (７) ディスク (８) 第２の位置決め機構 (９) ブラケット (10) 透孔 (11) 端縁 (80) 受け板 (92) 位置決め突起 (1) Chassis (2) Pickup (3) First positioning mechanism (4) Guide shaft (5) Adjusting mechanism (6) Adjusting screw (7) Disk (8) Second positioning mechanism (9) Bracket (10) Through-hole (11) Edge (80) Receiving plate (92) Positioning protrusion
Claims (3)
して接近離間可能に設けられたピックアップ(２)と、該
ピックアップ(２)の移動方向に延びピックアップ(２)が
嵌まるガイド軸(４)と、ピックアップ(２)の移動方向を
含みシャーシ(１)上面に直交した面内にてガイド軸(４)
の傾き角度を変える調整機構(５)を設け、該調整機構
(５)はガイド軸(４)の端部を保持するブラケット(９)
と、該ガイド軸(４)を上向き又は下向きに付勢するバネ
体と、バネ体に抗してガイド軸(４)を押し込む調整ネジ
(６)を具えたディスク記録又は再生装置に於いて、 調整機構(５)はシャーシ(１)上にてブラケット(９)の位
置を定める第１の位置決め機構(３)と、シャーシ(１)面
に略平行な面内にて調整ネジ(６)の位置を定め、調整ネ
ジ(６)の進行方向をガイド軸(４)の中心Ｃに正確に向け
る第２の位置決め機構(８)を具えたことを特徴とするデ
ィスク記録又は再生装置。1. A pickup (2) provided on a chassis (1) so as to be able to approach and separate from the center of a disc (7), and a guide extending in the moving direction of the pickup (2) and fitting with the pickup (2). A guide shaft (4) in a plane perpendicular to the upper surface of the chassis (1) including the movement direction of the shaft (4) and the pickup (2).
An adjusting mechanism (5) for changing the inclination angle of the
(5) is a bracket (9) for holding the end of the guide shaft (4).
A spring body for urging the guide shaft (4) upward or downward; and an adjusting screw for pushing the guide shaft (4) against the spring body.
In the disk recording or reproducing apparatus provided with (6), the adjusting mechanism (5) includes a first positioning mechanism (3) for determining the position of the bracket (9) on the chassis (1), and the chassis (1). A second positioning mechanism (8) for determining the position of the adjusting screw (6) in a plane substantially parallel to the plane, and for accurately directing the traveling direction of the adjusting screw (6) to the center C of the guide shaft (4). A disk recording or reproducing apparatus characterized by the above-mentioned.
プ(２)の移行路よりも低位置に設けられた請求項１に記
載のディスク記録又は再生装置。2. The disc recording or reproducing apparatus according to claim 1, wherein the first positioning mechanism (3) is provided at a position lower than a transition path of the pickup (2).
(９)に設けられた舌片(91)をシャーシ(１)に開設された
透孔(10)に嵌めて構成され、ブラケット(９)をビス止め
する際にビスの回転に伴って舌片(91)を透孔(10)の端縁
(11)に当接させてブラケット(９)は位置決めされ、 第２の位置決め機構(８)は、調整ネジ(６)が螺合する受
け板(80)とブラケット(９)上の位置決め突起(92)を具
え、受け板(80)をビス止めする際にビスの回転に伴って
受け板(80)を位置決め突起(92)に当接させて受け板(80)
は位置決めされる請求項１又は２に記載のディスク記録
又は再生装置。3. The first positioning mechanism (3) includes a bracket.
A tongue piece (91) provided in (9) is fitted into a through hole (10) formed in the chassis (1), and when the bracket (9) is screwed, the tongue piece is rotated with the screw. (91) through hole (10) edge
The bracket (9) is positioned by contacting the bracket (9) with the positioning plate (80) on which the adjusting screw (6) is screwed and the positioning protrusion () on the bracket (9). 92), and when the receiving plate (80) is screwed, the receiving plate (80) is brought into contact with the positioning projection (92) with the rotation of the screw to receive the receiving plate (80).
3. The disc recording or reproducing apparatus according to claim 1, wherein the disc is positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000170239A JP3691354B2 (en) | 2000-06-07 | 2000-06-07 | Disc recording or reproducing apparatus having a pickup tilt adjusting mechanism and method for positioning the adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000170239A JP3691354B2 (en) | 2000-06-07 | 2000-06-07 | Disc recording or reproducing apparatus having a pickup tilt adjusting mechanism and method for positioning the adjusting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001351250A true JP2001351250A (en) | 2001-12-21 |
| JP3691354B2 JP3691354B2 (en) | 2005-09-07 |
Family
ID=18672987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000170239A Expired - Fee Related JP3691354B2 (en) | 2000-06-07 | 2000-06-07 | Disc recording or reproducing apparatus having a pickup tilt adjusting mechanism and method for positioning the adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3691354B2 (en) |
-
2000
- 2000-06-07 JP JP2000170239A patent/JP3691354B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3691354B2 (en) | 2005-09-07 |
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