JPH087565Y2 - Optical pickup drive - Google Patents
Optical pickup driveInfo
- Publication number
- JPH087565Y2 JPH087565Y2 JP1985178455U JP17845585U JPH087565Y2 JP H087565 Y2 JPH087565 Y2 JP H087565Y2 JP 1985178455 U JP1985178455 U JP 1985178455U JP 17845585 U JP17845585 U JP 17845585U JP H087565 Y2 JPH087565 Y2 JP H087565Y2
- Authority
- JP
- Japan
- Prior art keywords
- elastic body
- worm gear
- rotary
- rotating
- optical pickup
- 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.)
- Expired - Lifetime
Links
Landscapes
- Moving Of Heads (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
【考案の詳細な説明】 イ）産業上の利用分野 本考案はコンパクト・デイスクプレイヤ等で用いられ
る光ピツクアツプ駆動装置に関する。DETAILED DESCRIPTION OF THE INVENTION a) Field of Industrial Application The present invention relates to an optical pickup drive device used in a compact disk player or the like.
ロ）従来の技術 コンパクト・デイスクプレイヤに用いられる光ピツク
アツプ駆動装置は、実開昭59-168804号公報に示されて
いる如く（第９図に示す）、ウオームギアの装着された
回転軸の回転を回転体（50）（51）に伝達し、ラツクギ
ア（52）の装着された光ピツクアツプ装着基板（53）を
デイスクの径方向に沿って移動するものである。ところ
で、光ピツクアツプ（54）のデイスクに記録されたトラ
ツクの追従能力は対物レンズの回路的制御能力にもよる
が機構上、光ピツクアツプ（54）の移動による精度の影
響を大きく受ける。即ち、曲のサーチ等の目標アドレス
を探索するときにはピツクアツプは目標アドレス付近を
前後するので、ギアとギアとの間に遊び（以後、バツク
ラツシユという）があると、ギアとギアとの噛合時にお
ける振動及びギアとギアが噛合するまでの時間がピツク
アツプのサーボ回路に影響を与え、この振動分を吸収す
るためにサーチスピードが長くなるという欠点があっ
た。このようなバツクラツシユはウオームギアの進み角
により回転体とのギア結合に於いて、回転体の回転軸に
対して水平成分と垂直成分とを生じ問題となった。(B) Prior art An optical pickup drive device used in a compact disc player, as disclosed in Japanese Utility Model Laid-Open No. 59-168804 (shown in FIG. 9), rotates a rotary shaft equipped with a worm gear. This is transmitted to the rotating bodies (50) (51) and moves the optical pick-up mounting substrate (53) mounted with the rack gear (52) along the radial direction of the disk. By the way, the tracking ability of the track recorded on the disk of the optical pickup (54) is greatly affected by the accuracy of the movement of the optical pickup (54), although it depends on the circuit control ability of the objective lens. That is, when searching for a target address such as a song search, the pick-up moves back and forth around the target address. Therefore, if there is play between the gears (hereinafter referred to as backlash), vibration at the time of meshing between the gears will occur. Also, there is a drawback that the time until the gears mesh with each other affects the pickup servo circuit, and the search speed becomes long to absorb the vibration. Such backlash has a problem in that, when the gear is connected to the rotating body due to the lead angle of the worm gear, a horizontal component and a vertical component are generated with respect to the rotating shaft of the rotating body.
ハ）考案が解決しようとする問題点 本考案は、前述したモーターの回転軸に装着されたウ
オームギアの進み角により生じる回転体への水平方向の
バツクラツシユ及び垂直方向のバツクラツシユを簡単な
る機構でなくそうとするものである。C) Problems to be solved by the present invention The present invention is not a simple mechanism for horizontal and vertical flashing on the rotor caused by the advance angle of the worm gear mounted on the rotary shaft of the motor. It is what
ニ）問題点を解決するための手段 本考案は回転体を２つの回転板で構成し、その間に水
平成分と垂直成分の反力を作り出す単一の弾性体を設け
たものである。D) Means for Solving the Problems The present invention comprises a rotating body composed of two rotating plates, and a single elastic body for producing a reaction force of a horizontal component and a vertical component is provided between them.
ホ）作用 本考案の光ピツクアツプ駆動装置によれば、２つの回
転板の間に設けた単一の弾性体は、ウオームギアの進み
角により生じる水平方向及び垂直方向のバツクラツシユ
を打ち消すよう作用する。(E) Action According to the optical pickup drive device of the present invention, the single elastic body provided between the two rotary plates acts to cancel the horizontal and vertical backlash caused by the lead angle of the worm gear.
ヘ）実施例 第１図は本考案実施例の光ピツクアツプ駆動装置の平
面図、第２図は第１図のA-A′面の側断面図である。
（１）は光ピツクアツプ（２）の装着された光ピツクア
ツプ装着基板で、一側面にラツクギア（３）が設けられ
ている。（４）はモーター装着基板（５）の折曲板
（６）に固定された光ピツクアツプ装着基板（１）の移
動用モーターで、その回転軸（７）にウオームギア
（８）が装着されている。（９）はウオームギア（８）
の回転で光ピツクアツプ装着基板（１）をデイスクの径
方向に直線的に移動変換する回転体で、モーター装着基
板（５）に植立された支軸（10）に装着された第１、第
２の回転板（11）（12）で構成される。（13）は第１、
第２の回転板（11）（12）の間に装着された輪状の弾性
体である。（14）は回転体（９）のスラスト受け、（1
5）は抜け止めワツシヤである。第３図（イ）及び
（ロ）は前述した弾性体（13）の平面図及び側面図で、
弾性体（１）は自由端を有しており、それぞれ端は逆向
きに折り曲げられ係止爪（16）（17）を構成しており、
自由端と対向する部分（Ａ）を中心として前後に折り曲
げられ固定変形されている。第４図（イ）（ロ）は第１
の回転板（11）の側断面図及び平面図で、（18）は支軸
（10）の挿入孔、（19）は弾性体（13）の装着溝、（2
0）は弾性体（13）の係止爪（16）の係止孔、（21）は
凹部、（22）はラツクギア（３）との結合ギア部、（2
3）はウオームギア（８）との結合ギア部である。第５
図（イ）（ロ）は第２の回転板（12）の側断面図及び平
面図で、（24）は支軸（10）の挿入孔、（25）は弾性体
（13）の装着溝、（26）は係止爪（17）の係止孔、（2
7）は第１の回転体（11）の凹部（21）に嵌合される凸
部、（28）はギア部である。本考案は上述の構成よりな
り、回転体（９）は第６図に示すように構成される。即
ち、第１の回転板（11）の係止孔（20）に係止爪（16）
を係止し、第２の回転板（12）の係止孔（26）に係止爪
（17）を係止して、凸部（27）を凹部（21）に嵌合す
る。この嵌合の際、第２の回転板（12）を若干回転させ
てお互いの係止孔（20）（26）を近づけるようにする。
このように回転して弾性体（13）により復帰力を得て、
第１、第２の回転板（11）（12）を互いに反対方向に回
転するよう附勢する。そして、支軸（10）に装着し、ワ
ツシヤ（15）で抜け止めをする。このように装着された
回転体（９）に於いて、第１の回転板（11）は弾性体
（13）により時計方向の回転力と下方向の附勢力を得、
第２の回転板（12）は弾性体（13）により反時計方向の
回転力と上方向の附勢力を得る（第７図参照）。F) Embodiment FIG. 1 is a plan view of an optical pickup drive device according to an embodiment of the present invention, and FIG. 2 is a side sectional view taken along the line AA 'in FIG.
(1) is an optical pick-up mounting substrate on which the optical pick-up (2) is mounted, and a rack gear (3) is provided on one side surface. (4) is a motor for moving the optical pick-up mounting substrate (1) fixed to the bending plate (6) of the motor mounting substrate (5), and the worm gear (8) is mounted on its rotating shaft (7). . (9) is a worm gear (8)
Is a rotary body that linearly moves and converts the optical pickup mounting substrate (1) in the radial direction of the disk by the rotation of the first, the first and the second mounted on the support shaft (10) set on the motor mounting substrate (5). It is composed of two rotating plates (11) and (12). (13) is the first,
It is a ring-shaped elastic body mounted between the second rotary plates (11) and (12). (14) is the thrust receiver of the rotating body (9), (1
5) is a retainer washer. 3A and 3B are a plan view and a side view of the elastic body (13) described above.
The elastic body (1) has free ends, and the ends are bent in opposite directions to form locking claws (16) (17),
The part (A) facing the free end is bent back and forth to be fixed and deformed. Figure 4 (a) and (b) are the first
In a side sectional view and a plan view of the rotating plate (11), (18) is an insertion hole of the support shaft (10), (19) is a mounting groove of the elastic body (13), and (2).
(0) is a locking hole of the locking claw (16) of the elastic body (13), (21) is a recess, (22) is a coupling gear part with the rack gear (3), (2)
3) is a coupling gear part with the worm gear (8). Fifth
Figures (a) and (b) are a side sectional view and a plan view of the second rotary plate (12). (24) is an insertion hole for the spindle (10), (25) is a mounting groove for the elastic body (13). , (26) are the locking holes of the locking claws (17), (2
7) is a convex part fitted in the concave part (21) of the first rotating body (11), and (28) is a gear part. The present invention has the above-mentioned configuration, and the rotating body (9) is configured as shown in FIG. That is, the locking claw (16) is inserted into the locking hole (20) of the first rotating plate (11).
Is locked, the locking claw (17) is locked in the locking hole (26) of the second rotary plate (12), and the convex portion (27) is fitted into the concave portion (21). At the time of this fitting, the second rotating plate (12) is slightly rotated so that the locking holes (20) (26) are brought closer to each other.
By rotating in this way, the elastic body (13) obtains a restoring force,
The first and second rotating plates (11, 12) are urged to rotate in opposite directions. Then, attach it to the spindle (10) and use the washer (15) to prevent it from coming off. In the rotating body (9) thus mounted, the first rotating plate (11) obtains the clockwise rotating force and the downward urging force by the elastic body (13),
The second rotary plate (12) obtains a counterclockwise rotational force and an upward biasing force by the elastic body (13) (see FIG. 7).
したがって、今、モーター（４）が駆動され回転軸
（７）が時計方向に回転すると、第８図に示す如くウオ
ームギア（８）の進み角（α）により左方向の水平成分
と上方向の垂直成分の力のベクトルが発生する。このた
め第１、第２の回転板（11）（12）は上方向の垂直成分
により支軸（10）に対して持ち上がる方向に力をうけ、
左方向の水平成分により回転力を得ると共に左方向に移
動する力をうける。しかしながら、第１の回転板（11）
は弾性体（13）によりこの力を打ち消す如く附勢されて
いるため、ウオームギア（８）とのギア結合におけるバ
ツクラツシユは打ち消されるように作用される。Therefore, when the motor (4) is driven and the rotary shaft (7) rotates clockwise in the clockwise direction, the lead angle (α) of the worm gear (8) causes the horizontal component in the leftward direction and the vertical direction in the upward direction as shown in FIG. A component force vector is generated. Therefore, the first and second rotary plates (11) (12) receive a force in the direction of lifting with respect to the support shaft (10) due to the vertical component in the upward direction,
Due to the horizontal component to the left, a rotational force is obtained and a force to move to the left is received. However, the first rotating plate (11)
Is urged by the elastic body (13) so as to cancel this force, so that the backlash in the gear connection with the worm gear (8) is cancelled.
また、モーター（４）が逆回転し、回転軸（７）を反
時計方向に回転するときにはウオームギア（８）の進み
角（α）により、右方向の水平成分と下方向の垂直成分
とが生じるけれども、今度は第２の回転板（12）がこれ
を打ち消すよう弾性体（13）により反時計方向の回転力
と上方向の附勢力を生じているから、進み角（α）によ
り生じるバツクラツシユが打ち消される。Further, when the motor (4) rotates in the reverse direction and the rotation shaft (7) rotates counterclockwise, the advance angle (α) of the worm gear (8) causes a horizontal component in the right direction and a vertical component in the downward direction. However, this time, since the second rotating plate (12) generates the counterclockwise rotating force and the upward urging force by the elastic body (13) so as to cancel it, the backlash caused by the advance angle (α) is generated. Canceled.
以上のようにウオームギア（８）と回転体（９）との
ギア結合はバツクラツシユが打消されるため回転力の伝
達が滑らかに行なわれ、光ピツクアツプ装着基板（１）
を精度高く移動することができる。As described above, the gear coupling between the worm gear (8) and the rotator (9) cancels the backlash, so that the rotational force is transmitted smoothly, and the optical pick-up mounting substrate (1) is provided.
Can be moved with high precision.
ト）考案の効果 上述の如く、本考案の光ピツクアツプ駆動装置によれ
ばモーターの回転軸に装着されたウオームギアの進み角
により生じる回転体への水平方向のバツクラツシユ及び
垂直方向のバツクラツシユを、２枚の回転板間に装着し
た単一の弾性体により打消しうるので簡単なる機構で精
度の高い光ピツクアツプ駆動装置を得ることができる。As described above, according to the optical pick-up drive device of the present invention, two pieces of horizontal and vertical brushing to the rotating body caused by the advance angle of the worm gear mounted on the rotating shaft of the motor are provided. Since it can be canceled by a single elastic body mounted between the rotating plates, a highly accurate optical pickup drive device can be obtained with a simple mechanism.
第１図は本考案実施例の光ピツクアツプ駆動装置の平面
図、第２図は本考案の第１図のA-A′面の側断面図、第
３図（イ）（ロ）は本考案の弾性体の正面図および側面
図、第４図（イ）（ロ）は本考案の第１の回転板の側断
面図及び平面図、第５図（イ）（ロ）は本考案の第２の
回転板の側断面図及び平面図、第６図は本考案の回転体
の組み立て動作を説明する側面図、第７図は本考案の回
転体の動作を説明する側面図、第８図は本考案の動作を
説明するウオームギアと回転体の側面図、第９図は従来
の光ピツクアツプ駆動装置の平面図である。 （１）……光ピツクアツプ装着基板、（２）……光ピツ
クアツプ、（３）……ラツクギア、（４）……モータ
ー、（７）……回転軸、（８）……ウオームギア、
（９）……回転体、（10）……支軸、（11）……第１の
回転板、（12）……第２の回転板、（13）……弾性体、
（16）（17）……係止爪、（20）（26）……係止孔、
（21）……凹部、（22）（23）（28）……ギア部。FIG. 1 is a plan view of an optical pickup drive apparatus according to an embodiment of the present invention, FIG. 2 is a side sectional view of the AA ′ surface of FIG. 1 of the present invention, and FIGS. 3 (a) and (b) are elastic portions of the present invention. FIG. 4 (a) (b) is a side sectional view and a plan view of the first rotating plate of the present invention, and FIG. 5 (a) (b) is a second view of the present invention. FIG. 6 is a side view for explaining the assembling operation of the rotating body of the present invention, FIG. 7 is a side view for explaining the operation of the rotating body of the present invention, and FIG. 8 is a book. FIG. 9 is a side view of a worm gear and a rotating body for explaining the operation of the invention, and FIG. 9 is a plan view of a conventional optical pickup drive device. (1) …… Optical pickup mounting board, (2) …… Optical pickup, (3) …… Lack gear, (4) …… Motor, (7) …… Rotating shaft, (8) …… Worm gear,
(9) ... Rotator, (10) ... Spindle, (11) ... First rotary plate, (12) ... Second rotary plate, (13) ... Elastic body,
(16) (17) …… Locking claw, (20) (26) …… Locking hole,
(21) …… Concave part, (22) (23) (28) …… Gear part.
Claims (2)
アと、該ウオームギアと噛合する回転体と、該回転体に
噛合するラツクギアの装着された光ピツクアツプ装着基
板とよりなる光ピツクアツプ駆動装置に於いて、前記回
転体を２つの回転板で構成し、該回転板の間に前記ウオ
ームギアの進み角により生じる前記回転体との水平及び
垂直方向のバツクラツシユを緩和する単一の弾性体を装
着したことを特徴とする光ピツクアツプ駆動装置。1. An optical pick-up driving device comprising a worm gear mounted on a rotary shaft of a motor, a rotating body meshing with the worm gear, and an optical pick-up mounting substrate on which a rack gear meshing with the rotating body is mounted. The rotary body is composed of two rotary plates, and a single elastic body is installed between the rotary plates to alleviate horizontal and vertical backlash with the rotary body caused by the lead angle of the worm gear. Optical pickup drive device.
あり、該弾性体をその自由端と対向する部分を中心とし
て前後に折り曲げ前記垂直方向のバツクラツシユを緩和
する力を生じせしめることを特徴とする実用新案登録請
求の範囲第１項記載の光ピツクアツプ駆動装置。2. The elastic body is a ring-shaped elastic body having a free end, and the elastic body is bent back and forth around a portion facing the free end to generate a force for alleviating the vertical backlash. An optical pick-up drive device according to claim 1, wherein the utility model is registered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985178455U JPH087565Y2 (en) | 1985-11-20 | 1985-11-20 | Optical pickup drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985178455U JPH087565Y2 (en) | 1985-11-20 | 1985-11-20 | Optical pickup drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6285960U JPS6285960U (en) | 1987-06-01 |
| JPH087565Y2 true JPH087565Y2 (en) | 1996-03-04 |
Family
ID=31120599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985178455U Expired - Lifetime JPH087565Y2 (en) | 1985-11-20 | 1985-11-20 | Optical pickup drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087565Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6080177A (en) * | 1983-10-11 | 1985-05-08 | Sony Corp | Disk player |
| JPS60131676A (en) * | 1983-12-20 | 1985-07-13 | Fujitsu General Ltd | Anti-vibration device for digital disk deck |
-
1985
- 1985-11-20 JP JP1985178455U patent/JPH087565Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6285960U (en) | 1987-06-01 |
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