JPH03130971A - Pickup moving device - Google Patents
Pickup moving deviceInfo
- Publication number
- JPH03130971A JPH03130971A JP20497189A JP20497189A JPH03130971A JP H03130971 A JPH03130971 A JP H03130971A JP 20497189 A JP20497189 A JP 20497189A JP 20497189 A JP20497189 A JP 20497189A JP H03130971 A JPH03130971 A JP H03130971A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- pickup
- supporting member
- support member
- guide
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Moving Of Heads (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
(イ)産業上の利用分野
本発明は、ディスクの両面に記録された映像及び音声信
号を選択自在に再生可能な両面再生装置に用いられるピ
ックアップの案内装置に関する。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a pickup guide device used in a double-sided playback device that can selectively play back video and audio signals recorded on both sides of a disc.
(ロ)従来の技術
両面に映像及び音声信号が光学的に記録されたディスク
のその両面から信号再生を単一のピックアップにて実行
させる、所謂ディスク両面再生装置が近年賞月されてい
る。例えば、特開昭63−288478号公報(Gl
IB7/12)には、前述のディスク両面再生装置の一
例が開示されている。第8図、第9図は、前記従来技術
の構造を示す斜視図である。これらの図において、対物
レンズ(1)を備えたピックアップ(2)はキャリッジ
(3)に載置され、第10図の如く、ディスク(18)
下面再生時には基台(4)に支持されたガイドシャフト
(5a)、上面再生時には連結部材(6)に支持された
ガイドシャフト(5b)にキャリッジ(3)底面の嵌合
孔(3b)を嵌合させることにより、キャリッジ(3)
は各シャフトに沿って移送される。ここで、ガイドシャ
フト(5a)(5b)は固定体(5C)によって支持さ
れている。キャリッジ(3)はフィードモータ(40)
及びこのモータにより駆動されるギア(3a)を含む駆
動機構(図示せず)を搭載しており、該ギア(3a)と
、基台(4)に固定されている一対の案内部材(7a)
(7b)に設けたラック(7c)との噛合いによって可
動する。案内部材(7a)(7b)はU字形を呈してお
り、直線部が再生時の案内に係り、曲線部がキャリッジ
(3)を下面から上面へ移送するとき、または上面から
下面へ移送するときの案内を担う。ここで、(7d)は
案内部材(7a)(7b)に設けたガイド孔で、キャリ
ッジ(3)に具備した回動部材(3c) (キャリッジ
移送時にキャリッジをターンテーブル面と平行に保持す
るもの)が係合する。また案内部材(7a)(7b)の
上部は連結部材(6)に支持されている。基台(4)に
はスピンドルモータ(8)が固定され、モータ軸(8a
)にはディスク(図示せず)を載置せしめるためのター
ンテーブル(9)及びセンターハブ(10)が嵌着され
ている。(B) Conventional Technology In recent years, so-called double-sided disk playback devices have been gaining acclaim in recent years, in which a single pickup reproduces signals from both sides of a disk on which video and audio signals are optically recorded. For example, Japanese Patent Application Laid-Open No. 63-288478 (Gl
IB7/12) discloses an example of the above-mentioned disk double-sided playback device. FIGS. 8 and 9 are perspective views showing the structure of the prior art. In these figures, a pickup (2) with an objective lens (1) is placed on a carriage (3), and a disk (18) is mounted on the carriage (3) as shown in FIG.
The fitting hole (3b) on the bottom of the carriage (3) is fitted into the guide shaft (5a) supported by the base (4) when the bottom surface is regenerated, and into the guide shaft (5b) supported by the connecting member (6) when the top surface is regenerated. By aligning the carriage (3)
is transported along each shaft. Here, the guide shafts (5a) (5b) are supported by a fixed body (5C). Carriage (3) is feed motor (40)
and a drive mechanism (not shown) including a gear (3a) driven by this motor, and a pair of guide members (7a) fixed to the gear (3a) and the base (4).
It is movable by meshing with the rack (7c) provided at (7b). The guide members (7a) and (7b) are U-shaped, and the straight part is used for guiding during playback, and the curved part is used for transferring the carriage (3) from the lower surface to the upper surface or from the upper surface to the lower surface. Responsible for providing guidance. Here, (7d) is a guide hole provided in the guide members (7a) and (7b), and a rotating member (3c) provided on the carriage (3) (for holding the carriage parallel to the turntable surface during carriage transfer) ) is engaged. Further, the upper portions of the guide members (7a) (7b) are supported by the connecting member (6). A spindle motor (8) is fixed to the base (4), and the motor shaft (8a
) is fitted with a turntable (9) and a center hub (10) on which a disk (not shown) is placed.
基台(4)はこれに具備せしめた固定部(4a)でシャ
ーシ底部(11)に固定されており、シャーシ底部(1
1)に一体的に立設されたシャーシ側部(lla)(l
lb)の上部には両者を接続する支持部材(12)が取
付けられている。(llc)はシャーシ後部である。支
持部材(12)はシャーシ側部(lla)(llb)を
補強するとともに、上面再生におけるディスクに対する
ピックアップの相対的位置精度を維持するために、連結
部材(6)及び案内部材(7a)(7b)の位置決めに
関与する。即ち、予め再生における基準となるモータ軸
中心に対してシャーシ側部(lla)を所定位置に設定
しておき、シャーシ側部(lla)及び連結部材(6)
の所定位置に設けたガイドピン(13)(14)に対し
て支持部材(12)に設けた嵌合孔(13a)(14a
)を嵌合させ、もってモータ軸中心に対する案内部材(
7a)(7b)の相対的な位置決めをおこなっている。The base (4) is fixed to the chassis bottom (11) with a fixing part (4a) provided thereon, and the chassis bottom (11)
1) The chassis side parts (lla) (l
A support member (12) is attached to the upper part of lb) to connect the two. (llc) is the rear part of the chassis. The support member (12) reinforces the chassis side parts (lla) (llb), and also connects the connecting member (6) and the guide members (7a) (7b) to maintain the relative positional accuracy of the pickup with respect to the disc during top-side playback. ) is involved in positioning. That is, the chassis side part (lla) is set in advance at a predetermined position with respect to the center of the motor shaft, which is the reference for reproduction, and the chassis side part (lla) and the connecting member (6) are
Fitting holes (13a) (14a) provided in the support member (12) for guide pins (13) (14) provided at predetermined positions of the support member (12)
), and then the guide member (
The relative positioning of 7a) and (7b) is performed.
(ハ)発明が解決しようとする課題
前記従来技術の構成では、再生装置の組立て時において
、部品精度や組立精度のバラツキによって連結部材(6
)及び案内部材(7a)(7b)の位置精度が得られ難
いため、ディスクに対するピックアップの対物レンズの
駆動軌道にずれが発生する場合があり、とりわけ上面再
生時においてトラッカビリティが悪化するという問題が
生じる。これは、図示の如く、下面再生では堅牢な基台
(4)にスピンドルモータとガイドシャフト(5a)が
一体的に固定されているので、両者の相対的位置精度が
得られやすいのに対して、上面再生ではガイドシャフト
(5b)が案内部材(7a)(7b)を介して取付けら
れており、ピックアップとモータ軸との相対的な位置精
度が得られにくい構成となっているからである。(c) Problems to be Solved by the Invention In the configuration of the prior art described above, when assembling the regeneration device, the connecting member (6
) and the guide members (7a) and (7b), the drive trajectory of the objective lens of the pickup with respect to the disc may be misaligned, which causes the problem of deterioration of trackability, especially during top-side playback. arise. This is because, as shown in the figure, in bottom regeneration, the spindle motor and guide shaft (5a) are integrally fixed to the sturdy base (4), so it is easier to obtain relative positional accuracy between the two. This is because the guide shaft (5b) is attached via the guide members (7a) (7b) in the top surface reproduction, making it difficult to obtain relative positional accuracy between the pickup and the motor shaft.
上記の問題の発生機構を更に詳細に説明する。The mechanism by which the above problem occurs will be explained in more detail.
一般に光学式ディスク再生装置のトラッキング方法とし
て利用されている3ビーム法では、第11図に示す如く
、ピックアップの半導体レーザから出射された光ビーム
は、回折格子によって3ビームに分けられてディスクの
ピット(15)に光スポットとして照射され、主スポッ
ト(16)の両側にある副スポット(17a)(17b
)からの反射光量差をホトダイオードで受光し、トラッ
キングエラー信号として検出する方法である。各スポッ
トの間隔は光学設計によって決められ、通常20μm前
後に設定される。また副スポットは信号トラックに対し
て角度αをもって調整される。(15a)は信号トラッ
クの中心線、(17c)は各スポットの中心線である。In the three-beam method, which is generally used as a tracking method for optical disc playback devices, as shown in Figure 11, the light beam emitted from the semiconductor laser of the pickup is divided into three beams by a diffraction grating, and then (15) as a light spot, and sub spots (17a) (17b) on both sides of the main spot (16).
) is received by a photodiode and detected as a tracking error signal. The interval between each spot is determined by optical design, and is usually set at around 20 μm. The sub-spot is also adjusted at an angle α with respect to the signal track. (15a) is the center line of the signal track, and (17c) is the center line of each spot.
ここで、各スポットの間隔を20μm、スポット直径を
1μm、信号トラック幅を0.5μmとすると、副スポ
ットが信号トラックから離間する位置では副スポットの
ずれ量△Xは0.75μmとなるからαは(1)式によ
って得られ、△x=0.75μmからα= 2.15度
となる。Here, if the interval between each spot is 20 μm, the spot diameter is 1 μm, and the signal track width is 0.5 μm, then at the position where the sub spot is separated from the signal track, the deviation amount △X of the sub spot is 0.75 μm, so α is obtained from equation (1), and from Δx=0.75 μm, α=2.15 degrees.
5ina=Δx/20・・・・・(1)即ち、トラッキ
ングエラー信号を得るためには、αが2.15度を越え
ない範囲に設定されなければならないが、寸法精度、調
整精度、トラッキングの安定性を考慮して、通常αは1
.3度前後に設定される。5ina = Δx/20 (1) In other words, in order to obtain a tracking error signal, α must be set within a range that does not exceed 2.15 degrees, but dimensional accuracy, adjustment accuracy, and tracking Considering stability, α is usually set to 1.
.. It is set around 3 degrees.
第2図(b)に示すように、ピックアップの中立点にお
ける対物レンズの中心がディスク(18)の中心(19
)を通る半径方向のレンズ移動軸(22)上にあればよ
いが、ピックアップを再生装置に搭載する際の取付は精
度が低下すると、対物レンズ中心の移動軸はレンズ移動
軸(22)からずれてしまうことになる。レンズ移動軸
(22)における最内周信号トラック(20)及び最外
周信号トラック(21)のタンジエンシャル方向を夫々
(20a )、(21a)とすると、レンズ移動軸(2
2)に平行に△yずれたところにレンズ移動軸(23a
)がある場合、タンジエンシャル方向(20b)(21
b)は夫れ去れ角度θ、θ°で傾いた方向になり、最内
周に近ずくにつれて漸次傾き角度が大きくなって信号ト
ラックに対する副スポットの位置ずれが増し、トラッカ
ビリティが悪化する。信号トラックの半径をrとすると
、△yは(2)式で得られる。As shown in FIG. 2(b), the center of the objective lens at the neutral point of the pickup is the center (19) of the disk (18).
), but if the accuracy of mounting the pickup on the playback device decreases, the axis of movement at the center of the objective lens may deviate from the axis of lens movement (22). This will result in If the tangential directions of the innermost signal track (20) and the outermost signal track (21) on the lens movement axis (22) are (20a) and (21a), respectively, then the lens movement axis (22) is
The lens movement axis (23a
), the tangential direction (20b) (21
In b), the direction is tilted at the deviation angles θ and θ°, and as it approaches the innermost circumference, the tilt angle gradually increases, the positional deviation of the sub spot with respect to the signal track increases, and trackability deteriorates. When the radius of the signal track is r, Δy is obtained by equation (2).
△y=r−sinθ・・・・・(2)
さて再生時において、良好なトラッキング安定性を実現
するには角度θは10分以内に抑える必要があり、ビデ
オデイスゲでは最内周信号トラック半径は55mmであ
るから、△yは0.15mm以内に設定されなければな
らない。またコンパクトディスクの最内周信号トラック
半径は25111ffiであるがら、△yはO,Q7m
m以内が必要である。△y=r-sinθ...(2) Now, during playback, in order to achieve good tracking stability, the angle θ must be kept within 10 minutes, and in video disk gaming, the innermost signal track radius is Since it is 55 mm, Δy must be set within 0.15 mm. Furthermore, although the innermost signal track radius of the compact disc is 25111ffi, △y is O, Q7m.
Must be within m.
以上はレンズ移動軸(22)に対して実際のレンズ移動
軸が平行にずれた場合であるが、レンズ移動軸(22)
に対して傾き角θをもって設定されたレンズ移動軸(2
3b)の場合についても同様である。The above is a case where the actual lens movement axis deviates parallel to the lens movement axis (22), but the lens movement axis (22)
The lens movement axis (2
The same applies to case 3b).
以上の如く、前記従来技術では、上面再生において、調
整誤差、組立誤差等によってディスク中心を通る半径線
に対して、ピックアップの対物レンズ中心の移動軸がず
れを発生する場合があり、トラッカビリティが悪化する
慣れがある。As described above, in the above-mentioned conventional technology, in top surface playback, the movement axis of the center of the objective lens of the pickup may deviate from the radius line passing through the center of the disk due to adjustment errors, assembly errors, etc., resulting in poor trackability. I'm used to getting worse.
(ニ)課題を解決するための手段
本発明は、シャーシに対して支持部材または連結部材を
変位可能とし、該支持部材に連結部材を介して支持され
た案内部及びガイドシャフトから成るピックアップ移動
案内手段の位置を変化させることにより、上面再生での
タンジェンシャル方向のずれを調整するための調整機構
をシャーシに設けたことを特徴とする。(d) Means for Solving the Problems The present invention provides a pickup movement guide which is made up of a guide portion and a guide shaft that are capable of displacing a supporting member or a connecting member with respect to the chassis, and are supported by the supporting member via the connecting member. The present invention is characterized in that the chassis is provided with an adjustment mechanism for adjusting the deviation in the tangential direction during top surface reproduction by changing the position of the means.
(ホ)作用
本発明は上述の如く構成したので、上面再生時のピック
アップの移送精度が向上し、トラッキング特性も安定化
し、常に良好な再生状態が実現できる。(E) Function Since the present invention is configured as described above, the accuracy of transporting the pickup during top surface playback is improved, the tracking characteristics are also stabilized, and a good playback condition can always be achieved.
(へ)実施例 以下、図面に従い本発明の実施例について説明する。(f) Example Embodiments of the present invention will be described below with reference to the drawings.
第1図は本発明の第1実施例の側面図、第2図は同要部
上面図、第3図は同要部斜視図である。FIG. 1 is a side view of a first embodiment of the present invention, FIG. 2 is a top view of the main part, and FIG. 3 is a perspective view of the main part.
尚、各図において第8図乃至第10図と同一部分には同
一符号を付して説明を省略する。In each figure, the same parts as in FIGS. 8 to 10 are denoted by the same reference numerals, and explanations thereof will be omitted.
支持部材(112)はシャーシ側部(lla)と結合さ
れる一端に折曲部(24a)を具備しており、該折曲部
(24a)には調整ネジ(25)のネジ部(25a)が
螺合するタップ孔(26)が形成されている。The support member (112) has a bent portion (24a) at one end that is coupled to the chassis side portion (lla), and the bent portion (24a) has a threaded portion (25a) of the adjustment screw (25). A tapped hole (26) is formed into which the screw is screwed.
一方、シャーシ側部(lla)には調整ネジ(25)が
貫通する貫通孔(26a)が設けられている。On the other hand, the chassis side portion (lla) is provided with a through hole (26a) through which the adjustment screw (25) passes.
また、支持部材(112)の両端部には、シャーシ側部
(Ila)(llb)の取付部(30a)(30b)に
立設されたガイドピン(13a)(13b)に嵌合する
嵌合孔(27a)(27b)と、固定ネジ(28a)(
28b)が遊嵌される長穴(29a)(29b)が配設
されている。Further, at both ends of the support member (112), fittings that fit into guide pins (13a) (13b) provided upright on the mounting portions (30a) (30b) of the chassis side portions (Ila) (llb) are provided. Holes (27a) (27b) and fixing screws (28a) (
Elongated holes (29a) and (29b) into which the screws 28b) are loosely fitted are provided.
前記嵌合孔(27a)(27b)及び長大(29a)(
29b)は、薪に矢印方向に延在しており、固定ネジ(
28a)(28b)は長穴(29a)(29b)を貫通
して、取付部(30a)(30b)に形成されたタップ
孔(31)(31)に螺合される。The fitting holes (27a) (27b) and the long (29a) (
29b) extends in the direction of the arrow on the firewood, and the fixing screw (
28a and 28b pass through the elongated holes (29a and 29b) and are screwed into tap holes (31) and (31) formed in the mounting portions (30a and 30b).
尚、(3,2)(32)は連結部材(6)を支持部材(
112)に螺着固定するための螺着ネジである。In addition, (3, 2) (32) connects the connecting member (6) to the supporting member (
112).
次に支持部材(112)のシャーシ側部(lla)(l
lb)への取付に伴う位置調整手順について説明する。Next, the chassis sides (lla) (l) of the support member (112)
The position adjustment procedure accompanying the installation to lb) will be explained.
先ず、ガイドピン(14)を嵌合孔(14a)に嵌合し
、同時にガイドピン(13a)(13b)を嵌合孔(2
7a)(27b)に嵌合させて、支持部材(112)を
シャーシ側部(11a)(llb)及び連結部材(6)
に仮固定する。そして、螺着ネジ(32)(32)によ
り支持部材(112)を連結部材(6)に螺着固定し、
次いで固定ネジ(28a)(28b)を長穴(29a)
(29b)に貫通させ、支持部材(112)が矢印方向
に摺動可能な程度にタップ孔(31)(31)に螺合し
、更に調整ネジ(25)を貫通孔(26a)に貫通させ
てタップ孔(26)に螺合する。First, the guide pin (14) is fitted into the fitting hole (14a), and at the same time the guide pins (13a) and (13b) are fitted into the fitting hole (2).
7a) (27b), and the supporting member (112) is connected to the chassis side portions (11a) (llb) and the connecting member (6).
Temporarily fix it. Then, the supporting member (112) is screwed and fixed to the connecting member (6) using the screws (32) (32),
Next, insert the fixing screws (28a) (28b) into the elongated holes (29a).
(29b), and screwed into the tap holes (31) (31) to such an extent that the support member (112) can slide in the direction of the arrow, and further, the adjustment screw (25) is passed through the through hole (26a). screw into the tapped hole (26).
タンジェンシャル方向の調整は、調整ネジ(25)を回
動させて支持部材(112)をシャーシ側部(lla)
に対して矢印方向に摺動させることにより行なわれる。To adjust the tangential direction, rotate the adjustment screw (25) and move the support member (112) to the chassis side (lla).
This is done by sliding it in the direction of the arrow.
尚、この支持部材(112)の摺動に際して、嵌合孔(
27a)(27b)に嵌合されるガイドピン(13a)
(13b)及び長穴(29a)(29b)に遊嵌される
固定ネジ(28a)(28b)は夫々、矢印方向の摺動
案内を為す。In addition, when sliding this support member (112), the fitting hole (
Guide pin (13a) fitted to 27a) (27b)
(13b) and fixing screws (28a) (28b) loosely fitted into the elongated holes (29a) (29b) respectively provide sliding guidance in the direction of the arrow.
そして第11図に示す副スポット(17a)(17b)
のホトダイオード出力の観測によって行なわれる調整が
完了した後に、固定ネジ(28a)(28b)を絞め付
けて支持部材(112)を完全にシャーシ側部(lla
)(11b)に固定する。これにより、ピックアップ(
2)の上面再生に伴う移動時の移動軸がディスク(18
)の中心を通る半径線に一致する様に、ガイドシャツ)
C5b)及び案内部材(7a)(7b)の位置が最適
位置に調整されたことになる。And the sub-spots (17a) (17b) shown in FIG.
After completing the adjustment made by observing the photodiode output of the
) (11b). This allows the pickup (
2) The axis of movement during movement associated with top surface playback is the disk (18
) to match the radius line passing through the center of the guide shirt)
This means that the positions of C5b) and the guide members (7a) and (7b) have been adjusted to optimal positions.
第4図は本発明の第2実施例の要部側面図であり、支持
部材(212)は平坦部(212a)と折曲部(212
b)を端部に有し、折曲部(212b)には調整ネジ(
25)を貫通させる貫通孔(212c)が形成され、一
方、シャーシ側部(lla)には調整ネジ(25)のネ
ジ部(25a)が螺合するタップ孔(33)が具備され
ている。また、シャーシ側部(lla)と折曲部(21
2b)間にはスプリング(132)が介在しており、シ
ャーシ側部(11a)に対して常に支持部材(212)
を矢印A方向に付勢している。FIG. 4 is a side view of the main part of the second embodiment of the present invention, in which the support member (212) has a flat part (212a) and a bent part (212).
b) at the end, and the bent part (212b) has an adjustment screw (
A through hole (212c) is formed to pass through the adjustment screw (25), while a tapped hole (33) into which the threaded portion (25a) of the adjustment screw (25) is screwed is provided in the chassis side portion (lla). In addition, the chassis side part (lla) and the bending part (21
2b) A spring (132) is interposed between the support member (212) and the chassis side (11a).
is biased in the direction of arrow A.
位置調整は調整ネジ(25)の回動により行なわれ、そ
の回動力向によって支持部材(212)はシャーシ側部
(lla)に対して矢印A方向あるいはA′力方向摺動
する。Position adjustment is performed by rotating the adjustment screw (25), and depending on the direction of the rotation, the support member (212) slides in the direction of arrow A or in the force direction of arrow A' with respect to the chassis side (lla).
第5図は本発明の第3実施例の要部上面図であり、支持
部材(312)の端部にラック(35a)を有する係合
部材(35)を固着し、一方、取付部(30a)にはラ
ック部(35a)と噛合するギア部(34b)を有する
回転体(34)が支軸(34a)により枢支されている
。回転体(34)のギア部(34b)とは反対の端部に
は、レバー(34c)が一体形成され、位置調整時に矢
印BあるいはB′方向にレバー(34c)を介して回転
体(34)を回転させることにより、支持部材(312
)を矢印CあるいはC′力方向摺動させ得る。尚、(3
6)は支軸(34a)の軸方向への回転体(34)の抜
は止めを為すべく、取付部(30a)に固定された板バ
ネであり、レバー(34c)がこの板バネ(36)と当
接し、回動体(34)が取付部(30a)に押し付けら
れている。第6図は本発明の第4実施例の要部上面図で
あり、支持部材(412)の端部に切欠部(37)を形
成し、この切欠部(37)と係合するレバー(38)を
支軸(38a)により取付部(30a)に枢支し、この
レバー(38)を矢印りあるいはB′方向に回動させる
ことにより支持部材(412)は矢印E゛あるいはE方
向に摺動可能となり、最適量の摺動が完了した後に固定
ネジ(28a)を締め付けることにより調整が完了する
。FIG. 5 is a top view of essential parts of a third embodiment of the present invention, in which an engaging member (35) having a rack (35a) is fixed to an end of a supporting member (312), and a mounting portion (30a) is ), a rotating body (34) having a gear part (34b) that meshes with the rack part (35a) is pivotally supported by a support shaft (34a). A lever (34c) is integrally formed at the end of the rotating body (34) opposite to the gear part (34b), and when adjusting the position, the rotating body (34) is moved in the direction of arrow B or B' via the lever (34c). ) by rotating the support member (312
) can be slid in the force direction of arrow C or C'. Furthermore, (3
6) is a leaf spring fixed to the mounting part (30a) in order to prevent the rotating body (34) from being removed in the axial direction of the support shaft (34a), and the lever (34c) is attached to the leaf spring (36). ), and the rotating body (34) is pressed against the mounting portion (30a). FIG. 6 is a top view of essential parts of a fourth embodiment of the present invention, in which a notch (37) is formed at the end of a support member (412), and a lever (38) that engages with this notch (37) is shown. ) is pivotally supported on the mounting part (30a) by a support shaft (38a), and by rotating this lever (38) in the direction of the arrow or B', the support member (412) slides in the direction of the arrow E' or E. Adjustment is completed by tightening the fixing screw (28a) after the optimum amount of sliding has been completed.
第7図は本発明の第5実施例の要部上面図である。第1
図と同一の位置調整機構を付与1した支持部材(12)
と同一構成の支持部材(512)を平行に配置して、連
結部材(6)をその両端において支持部材(12)(5
12)にて螺着固定することにより、支持部材(12)
の摺動により案内部材(7a)(7b)及びガイドシャ
フト(5b)のデイスゲ内周側での位置調整が行なわれ
、支持部材(512)の摺動によりディスク外周側での
位置調整が行なわれる。FIG. 7 is a top view of essential parts of a fifth embodiment of the present invention. 1st
Support member (12) with the same position adjustment mechanism as shown in the figure
A supporting member (512) having the same configuration as the connecting member (6) is arranged in parallel with the supporting member (12) (5
By screwing and fixing with 12), the support member (12)
By sliding, the positions of the guide members (7a, 7b) and the guide shaft (5b) on the inner circumferential side of the disc are adjusted, and by sliding of the support member (512), the positions on the outer circumferential side of the disc are adjusted. .
以上の第1乃至第5実施例は、いずれも連結部材(6)
が螺着ネジ(32)(32)により支持部材(12)(
112)(212)(3120412)(512)に螺
着固定され、ガイドシャフト(5b)と案内部材(7a
)(7b)のタンジエンシャル方向の位置調整は、支持
部材のシャーシ側部(Ila)(llb)に対する変位
により実現しているが、支持部材を予めシャーシ側部(
lla)(llb)に変位不可能に螺着固定し、連結部
材(6)を支持部材に対して変位可能として位置調整を
行うこともできる。そこで、以下の実施例にて、上述の
構成を用いた例を詳述する。In each of the above first to fifth embodiments, the connecting member (6)
The support member (12) (
112) (212) (3120412) (512), and the guide shaft (5b) and the guide member (7a
) (7b) is achieved by displacing the supporting member relative to the chassis side (Ila) (llb).
It is also possible to screw and fix the connecting member (6) to the support member (lla) (llb) in a non-displaceable manner, and to adjust the position by making the connecting member (6) movable relative to the support member. Therefore, in the following embodiment, an example using the above-mentioned configuration will be described in detail.
第13図、第14図及び第15図は本発明の第6実施例
の要部側面図、要部上面図及び要部分解斜視図である。FIGS. 13, 14, and 15 are a side view, a top view, and an exploded perspective view of a main part of a sixth embodiment of the present invention.
支持部材(612)は固定ネジ(613)(613)に
よりシャーシ側部(11a011b)に一体的に螺着固
定され、中央付近に一部を切り起こし、中央に貫通孔(
64a)を有する折曲部(64)と、螺合孔(63)(
63)が形成されている。案内部材(7a)(7b)及
びガイドシャフト(5b)を支持する連結部材(66)
には、一部を切り起こした折曲部(61)、開口部(6
0)及び矢印方向に延在する長穴(62)(62)が配
設され、また折曲部(61)の中央には螺合穴(61a
)が形成されている。The support member (612) is integrally screwed and fixed to the chassis side part (11a011b) with fixing screws (613) (613), and is partially cut and raised near the center, with a through hole (
A bent portion (64) having a screw hole (64a) and a screw hole (63) (
63) is formed. A connecting member (66) that supports the guide members (7a) (7b) and the guide shaft (5b)
has a bent part (61) and an opening (6
0) and elongated holes (62) (62) extending in the direction of the arrow, and a screw hole (61a) in the center of the bent part (61).
) is formed.
折曲部(64)を開口部(60)に挿入して折曲部(6
1)(64)を夫々対向させ、固定ネジ(65)(65
)を、スプリングワッシャ(図示省略)を介して夫々長
穴(62)(62)を貫通させて螺合孔(63)(63
)に、また、上述の如く折曲部(61)(64)が対向
配置される様に螺合させるが、この際、スプリングワッ
シャ(図示省略)を介して連結部材(66)が支持部材
(612)に対して付勢される様にして、矢印方向へ変
位可能とし、連結部材(66)の支持部材(612)へ
の仮固定を為す。また、上述の如く折曲部(61)(6
4)が対向配置されることにより貫通孔(64a)及び
螺合穴(61a)が対向状態となる。そこで調整ネジ(
67)を貫通孔(64a)に貫通させネジ部(67a)
を螺合穴(61a)に螺合させる。更に折曲部(61)
(64)間には、折曲部(64)に対して折曲部(61
)を離間させる方向に付勢するコイルバネ(68)が介
在せしめられている。Insert the bent portion (64) into the opening (60) and remove the bent portion (64).
1) (64) facing each other and fixing screws (65) (65
) through the elongated holes (62) (62), respectively, via spring washers (not shown) to screw into the screw holes (63) (63).
), and the bent portions (61) and (64) are screwed together so that they are opposed to each other as described above, but at this time, the connecting member (66) is connected to the supporting member (66) via a spring washer (not shown). 612) so that it can be displaced in the direction of the arrow, thereby temporarily fixing the connecting member (66) to the supporting member (612). In addition, as described above, the bent portions (61) (6
4) are placed facing each other, the through hole (64a) and the screw hole (61a) are placed in a facing state. Then the adjustment screw (
67) through the through hole (64a) and threaded part (67a)
into the screw hole (61a). Furthermore, the bending part (61)
(64) Between the bent part (64) and the bent part (61)
) is interposed with a coil spring (68) that biases them in the direction of separating them.
この仮固定状態での支持部材(612)に対する連結部
材(66)のタンジエンシャル方向の位置調整は、調整
ネジ(67)を回転させて連結部材(66)を矢印方向
に進退させることにより行なわれ、この進退に応じて固
定ネジ(65)(65)も長穴(62)(62)に沿っ
て移動し、この調整が完了した後に固定ネジ(65)(
65)を締め付けることにより、支持部材(612)に
対する連結部材(66)の取り付けが完了する。Adjustment of the position of the connecting member (66) in the tangential direction with respect to the supporting member (612) in this temporarily fixed state is performed by rotating the adjustment screw (67) and moving the connecting member (66) forward and backward in the direction of the arrow. The fixing screws (65) (65) also move along the elongated holes (62) (62) according to this movement, and after this adjustment is completed, the fixing screws (65) (
65) completes the attachment of the connecting member (66) to the supporting member (612).
第16図は本発明の第7実施例の要部側面図で8あり、
前記第6実施例では連結部材(66)の折曲部(61)
に螺合穴(61a)が、支持部材(612)の折曲部(
64)に調整ネジ(67)の貫通孔(64a)が設けら
れているのに対して、本実施例では支持部材(712)
の折曲部(74)に螺合穴(74a)が、連結部材(7
6)の折曲部(71)に貫通孔(71a)が設けられて
いる点が異なるが、タンジエンシャル方向の調整を、調
整ネジ(67)を回転させて、支持部材(712)に対
して連結部材(76)を変位させることにより実現する
点は全く同一である。FIG. 16 is a side view of the main part of the seventh embodiment of the present invention.
In the sixth embodiment, the bent portion (61) of the connecting member (66)
The screw hole (61a) is located at the bent portion (612) of the support member (612).
64) is provided with a through hole (64a) for the adjustment screw (67), whereas in this embodiment, the support member (712) is provided with a through hole (64a) for the adjustment screw (67).
A screw hole (74a) is provided in the bent portion (74) of the connecting member (74).
6) is different in that the bent portion (71) is provided with a through hole (71a), but the tangential direction adjustment can be made by rotating the adjustment screw (67) relative to the support member (712). The points realized by displacing the connecting member (76) are exactly the same.
第17図は本発明の第8実施例の要部上面図であり、シ
ャーシ側部(lla)(llb)に対する連結部材(8
)の取り付けを2個の支持部材(612)(812)に
て行い、且つ前記第6実施例にて示した支持部材に対す
る連結部材の位置調整機構を夫々の支持部材(612)
(812)に配し、支持部材(612)にてディスクの
内周側、支持部材(812)にてディスクの外周側の位
置調整を行う様に構成される。FIG. 17 is a top view of the main parts of the eighth embodiment of the present invention, and shows the connection member (8) to the chassis side parts (lla) (llb).
) is attached using two support members (612) (812), and the position adjustment mechanism of the connecting member with respect to the support member shown in the sixth embodiment is attached to each support member (612).
(812), and the support member (612) adjusts the position of the inner circumference of the disk, and the support member (812) adjusts the position of the outer circumference of the disk.
第18図、第19図は本発明の第9実施例の要部側面図
、及び要部上面図であり、前記第6実施例の折曲部(6
1)を連結部材(66)の右端に形成し、折曲部(64
)もこの折曲部(61)に対向する様に支持部材(61
2)の右方に配設した場合を示しており、調整機構の構
成は実質的に第6実施例と同一である。FIG. 18 and FIG. 19 are a side view and a top view of the main part of the ninth embodiment of the present invention.
1) is formed on the right end of the connecting member (66), and the bent part (64
) is also attached to the supporting member (61) so as to face this bent part (61).
2) is shown, and the configuration of the adjustment mechanism is substantially the same as that of the sixth embodiment.
第20図、第21図、第22図は本発明の第10実施例
を示す要部側面図であり、支持部材(912)には嵌合
孔(91)と螺合孔(93)(93)が形成され、連結
部材(96)には嵌合孔(91)より径大の調整用貫通
孔(94a)を有する折曲凸部(94)と長穴(92)
(92)が配設されている。固定ネジ(95)(95)
をスプリングワッシャ(97)(97)を介して長穴(
92)(92)を貫通させて螺合孔(93)(93)に
螺合させ、連結部材(96)を支持部材(912)に対
して仮固定する。尚、この仮固定状態では、固定ネジ(
95)(95)の締め付けは、連結部材(96)が支持
部材(912)に対して摺動可能となる程度の強さに抑
えられる。FIG. 20, FIG. 21, and FIG. 22 are side views of essential parts showing a tenth embodiment of the present invention, in which a support member (912) has a fitting hole (91) and a screw hole (93) ) is formed, and the connecting member (96) has a bent convex portion (94) having an adjustment through hole (94a) larger in diameter than the fitting hole (91) and a long hole (92).
(92) is provided. Fixing screw (95) (95)
through the spring washers (97) and the elongated hole (
92) (92) are passed through and screwed into the screw holes (93) (93) to temporarily fix the connecting member (96) to the support member (912). In addition, in this temporary fixing state, the fixing screw (
95) The tightening of (95) is suppressed to a level that allows the connecting member (96) to slide relative to the supporting member (912).
この仮固定状態で位置調整を行う場合には、第21図に
示す様に調整治具(99)を貫通穴(94a)に貫通さ
せ、調整治具(99)の先端に形成された径小の嵌合部
(99a)を嵌合孔(91)に嵌合させ、次いで第22
図に示す様に嵌合部(99a)を中心に調整治具(99
)を矢印XまたはX゛方向回動させることにより、治具
(99)が貫通孔(94a)の位置にて連結部材(96
)を押圧することになり、連結部材(96)は矢印Yま
たはY゛方向摺動する。そして最適量の摺動が完了した
時点で、連結部材(96)の摺動が不可能となる程度に
固定ネジ(95)(95)を締め付けて調整ネジ(99
)を引き抜くことにより位置調整が完了する。When adjusting the position in this temporarily fixed state, as shown in FIG. 21, insert the adjustment jig (99) into the through hole (94a), Fit the fitting part (99a) of the second part into the fitting hole (91), and then
As shown in the figure, the adjustment jig (99) is centered around the fitting part (99a).
) in the direction of arrow X or X', the jig (99) connects the connecting member (96
), and the connecting member (96) slides in the direction of arrow Y or Y'. Then, when the optimum amount of sliding is completed, the fixing screws (95) (95) are tightened to such an extent that the connecting member (96) cannot slide, and the adjusting screw (99) is tightened.
) to complete the position adjustment.
第23図は本発明の第11実施例の要部側面図であり、
前記第10実施例と異なるのは、支持部材(952)に
調整治具(99)の貫通孔(954a)を有する凸部(
954)を設け、連結部材(976)に調整治具(99
)の嵌合部(99a)が嵌合する嵌合孔(978)を設
けている点であり、調整機構自体は第9実施例と同様で
ある。FIG. 23 is a side view of essential parts of the eleventh embodiment of the present invention,
The difference from the tenth embodiment is that the support member (952) has a convex portion (954a) of the adjustment jig (99).
954), and an adjustment jig (99) is provided on the connecting member (976).
) is provided with a fitting hole (978) into which the fitting part (99a) fits, and the adjustment mechanism itself is the same as in the ninth embodiment.
第24図は本発明の第12実施例の上面図を示し、位置
調整機構自体は第20図と全く同一であるが、支持部材
(112)をシャーシ側部(lla)(llb)ではな
く、シャーシ前部(lid)及び後部(llc)に螺着
固定しているため、長穴(92)、嵌合孔(91)、貫
通孔(94a)の延在方向を支持部材(112)の長手
方向に直交する方向に設定することにより、連結部材(
96)の摺動方向をタンジエンシャル方向に一致させて
いる。FIG. 24 shows a top view of the twelfth embodiment of the present invention, in which the position adjustment mechanism itself is exactly the same as that in FIG. Because they are screwed and fixed to the front (lid) and rear (llc) of the chassis, the extending direction of the elongated hole (92), fitting hole (91), and through hole (94a) is aligned with the longitudinal direction of the support member (112). By setting the direction perpendicular to the direction, the connecting member (
96) is made to coincide with the tangential direction.
第25図は本発明の第13実施例の上面図を示し、前記
第12実施例と全く同一構成の支持部材(112)と平
行に別途支持部材(122)をシャーシ前部(lid)
及び後部(llc)に螺着固定し、これら両支持部材(
112)(122)にて連結部材(96)の左右の支持
を行っている。FIG. 25 shows a top view of a thirteenth embodiment of the present invention, in which a separate support member (122) is installed at the front of the chassis (lid) in parallel with a support member (112) having exactly the same configuration as the twelfth embodiment.
and the rear part (llc), and both of these supporting members (
112) and (122) provide left and right support for the connecting member (96).
(ト)発明の効果
上述の如く本発明によれば、上面再生においてピックア
ップの移動軸がディスク中心を通る半径方向の移動軸に
一致する様に調整されるので、上面再生におけるトラッ
カビリティを安定化し、常に良好な再生状態が維持でき
る。(G) Effects of the Invention As described above, according to the present invention, the movement axis of the pickup is adjusted to coincide with the radial movement axis passing through the center of the disk during top-side playback, thereby stabilizing trackability during top-side playback. , a good playback condition can always be maintained.
第1図は本発明の第1実施例の側面図、第2図は同要部
上面図、第3図は同要部斜視図、第4図は第2実施例の
要部側面図、第5図は第3実施例の要部上面図、第6図
は第4実施例の要部上面図、第7図は第5実施例の要部
上面図、第8図、第9図は従来例の斜視図、第10図は
同側面図、第11図はディスクのピットとレーザスポッ
トとの位置関係を示す説明図、第12図はディスクに対
するピックアップのタンジエンシャル方向の相対的位置
関係を説明する図、第13図は第6実施例の要部側面図
、第14図は同要部上面図、第15図は同要部分解斜視
図、第16図は第7実施例の要部側面図、第17図は第
8実施例の要部上面図、第18図は第9実施例の要部側
面図、第19図は同要部上面図、第20図、第21図、
第22図は第10実施例の要部側面図、第23図は第1
1実施例の要部側面図、第24図は第12実施例の上面
図、第25図は第13実施例の上面図である。Fig. 1 is a side view of the first embodiment of the present invention, Fig. 2 is a top view of the main part, Fig. 3 is a perspective view of the main part, and Fig. 4 is a side view of the main part of the second embodiment. 5 is a top view of the main parts of the third embodiment, FIG. 6 is a top view of the main parts of the fourth embodiment, FIG. 7 is a top view of the main parts of the fifth embodiment, and FIGS. 8 and 9 are the conventional FIG. 10 is a side view of the example, FIG. 11 is an explanatory diagram showing the positional relationship between the pits of the disk and the laser spot, and FIG. 12 is the relative positional relationship in the tangential direction of the pickup with respect to the disk. 13 is a side view of the main part of the sixth embodiment, FIG. 14 is a top view of the main part, FIG. 15 is an exploded perspective view of the main part, and FIG. 16 is a main part of the seventh embodiment. 17 is a top view of the main parts of the eighth embodiment; FIG. 18 is a side view of the main parts of the ninth embodiment; FIG. 19 is a top view of the main parts; FIGS. 20 and 21;
Fig. 22 is a side view of the main parts of the 10th embodiment, and Fig. 23 is a side view of the main parts of the 10th embodiment.
24 is a top view of the twelfth embodiment, and FIG. 25 is a top view of the thirteenth embodiment.
Claims (1)
するピックアップと 該ピックアップを前記ディスクの上面または下面からの
情報再生が可能な位置に移動案内する案内部と、 該案内部を連結する連結部材と、 該連結部材をシャーシに固定する支持部材と、前記シャ
ーシに対して前記支持部材または前記連結部材を前記ピ
ックアップの移動方向に直交する方向に変位可能とし、
前記ピックアップの対物レンズ中心の移動軸を前記ディ
スク中心を通る半径線に一致せしめる調整機構を備える
ピックアップ移送装置。(1) A pickup for reproducing information from a disk on which information is recorded on both sides, a guide section for moving and guiding the pickup to a position where information can be reproduced from the top or bottom surface of the disk, and a connection for connecting the guide section. a support member that fixes the connection member to a chassis; the support member or the connection member is movable with respect to the chassis in a direction perpendicular to a moving direction of the pickup;
A pickup transfer device comprising an adjustment mechanism for aligning a moving axis of the center of the objective lens of the pickup with a radial line passing through the center of the disk.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17598489 | 1989-07-07 | ||
JP1-175984 | 1989-07-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03130971A true JPH03130971A (en) | 1991-06-04 |
Family
ID=16005666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20497189A Pending JPH03130971A (en) | 1989-07-07 | 1989-08-08 | Pickup moving device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03130971A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003030169A1 (en) * | 2001-08-29 | 2003-04-10 | Sony Corporation | Recording medium drive device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62149078A (en) * | 1986-11-17 | 1987-07-03 | Canon Electronics Inc | Carriage driving mechanism |
JPS63288478A (en) * | 1987-05-20 | 1988-11-25 | Sanyo Electric Co Ltd | Optical disk device |
-
1989
- 1989-08-08 JP JP20497189A patent/JPH03130971A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62149078A (en) * | 1986-11-17 | 1987-07-03 | Canon Electronics Inc | Carriage driving mechanism |
JPS63288478A (en) * | 1987-05-20 | 1988-11-25 | Sanyo Electric Co Ltd | Optical disk device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003030169A1 (en) * | 2001-08-29 | 2003-04-10 | Sony Corporation | Recording medium drive device |
US6922840B2 (en) | 2001-08-29 | 2005-07-26 | Sony Corporation | Recording medium driving apparatus including at least a turntable, a spindle motor, and a linear driving device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR950014833B1 (en) | Optical pick up devices | |
US5768248A (en) | Pickup position and tilt adjusting apparatus of a disk player | |
JPS6341136B2 (en) | ||
JPH10302304A (en) | Optical disk device | |
US6363038B1 (en) | Optical pickup device minimizing an undesirable astigmatism | |
KR20020064934A (en) | Disk reproducing device | |
JPH03130971A (en) | Pickup moving device | |
JPH0636292A (en) | Optical pickup driver | |
US6621771B1 (en) | Disk drive with an objective lens disposed in an optical head moving along a transfer line not intersecting the center of rotation of a disk | |
JPS6349864Y2 (en) | ||
EP1016082B1 (en) | Disc reproduction apparatus | |
KR100604782B1 (en) | Optical axis aligning apparatus for pickup | |
JP3924486B2 (en) | Skew adjustment device for disk drive device and disk drive device | |
JPH0351779Y2 (en) | ||
JPS60164936A (en) | Angle correcting device of optical pickup | |
JP2601181B2 (en) | Optical pickup device | |
JP3740777B2 (en) | Light emitting / receiving element, optical pickup device, and optical disk device | |
JP2500797B2 (en) | Optical pickup device | |
JP2512262Y2 (en) | Optical pickup device | |
JP2000306320A (en) | Drive apparatus | |
JP2002042351A (en) | Optical disk drive | |
JP2004013946A (en) | Optical pickup and disk drive | |
JP2001101695A (en) | Optical head and its assembling method | |
JPH0519209B2 (en) | ||
JPH05242487A (en) | Pickup for driving optical system integrally |