JPS6456020U - - Google Patents
Info
- Publication number
- JPS6456020U JPS6456020U JP15193587U JP15193587U JPS6456020U JP S6456020 U JPS6456020 U JP S6456020U JP 15193587 U JP15193587 U JP 15193587U JP 15193587 U JP15193587 U JP 15193587U JP S6456020 U JPS6456020 U JP S6456020U
- Authority
- JP
- Japan
- Prior art keywords
- support shaft
- objective lens
- optical pickup
- protrusion
- drive device
- 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
- 230000003287 optical effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims 2
- 229920005989 resin Polymers 0.000 claims 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims 2
- 239000004698 Polyethylene Substances 0.000 claims 1
- 230000007423 decrease Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- -1 polyethylene Polymers 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の実施例の係る光学式ピツクア
ツプの対物レンズ駆動装置の平面図、第２図は第
１図の光学式ピツクアツプの対物レンズ駆動装置
の断面図、第３図は第１図の部分拡大図、第４図
は第２図の部分拡大図、第５図は材料の組合せ別
に面圧と動摩擦係数の関係を示す説明図、第６図
はコンパクトデイスクプレーヤの駆動部の構成を
示す平面図、第７図は第６図のコンパクトデイス
クプレーヤの駆動部に備えられている従来の光学
式ピツクアツプの断面図、第８図は従来の光学式
ピツクアツプの部分平面図である。
１６……対物レンズ駆動装置、１７……レンズ
ホルダ、１８……対物レンズ、１９……軸受、１
９ａ……軸挿通部、２０……支持台、２１……支
持軸、２１ａ……支持軸の内周面、２２……弾性
支持部材、２３……軸受内周面の突起、２５，２
６……コイル、２７……磁気発生部材。
FIG. 1 is a plan view of an objective lens driving device for an optical pickup according to an embodiment of the present invention, FIG. 2 is a sectional view of the objective lens driving device for an optical pickup shown in FIG. 4 is a partially enlarged view of FIG. 2, FIG. 5 is an explanatory diagram showing the relationship between surface pressure and coefficient of dynamic friction for each combination of materials, and FIG. 6 is a diagram showing the configuration of the drive section of a compact disc player. 7 is a sectional view of a conventional optical pickup provided in the drive section of the compact disc player of FIG. 6, and FIG. 8 is a partial plan view of the conventional optical pickup. 16... Objective lens drive device, 17... Lens holder, 18... Objective lens, 19... Bearing, 1
9a...Shaft insertion part, 20...Support stand, 21...Support shaft, 21a...Inner circumferential surface of support shaft, 22...Elastic support member, 23...Protrusion on inner circumferential surface of bearing, 25,2
6... Coil, 27... Magnetism generating member.
Claims (1)
ルダに、光デイスクに対向する対物レンズが支持
されており且つ、支持軸を中心とする回動方向へ
レンズホルダを駆動する磁気駆動機構が備えられ
ている光学式ピツクアツプの対物レンズ駆動装置
において、前記支持軸に回動自在に挿通されてい
る軸受の内周面には円周方向に間隔を開けた複数
の突起が形成されており、この突起が支持軸の外
周面に摺接していることを特徴とする光学式ピツ
クアツプの対物レンズ駆動装置。 (2) 軸受の突起と支持軸は、面圧の上昇ととも
に動摩擦抵抗が減少する材質の組合せによつて形
成されている実用新案請求の範囲第１項記載の光
学式ピツクアツプの対物レンズ駆動装置。 (3) 軸受の突起と支持軸との材質の組み合わせ
は、四ふつ化エチレン樹脂どうしである実用新案
登録請求の範囲２項記載の光学式ピツクアツプの
対物レンズ駆動装置。 (4) 軸受の突起と支持軸との材質の組み合わせ
は、ポリエチレンと四ふつ化エチレン樹脂である
実用新案登録請求の範囲２項記載の光学式ピツク
アツプの対物レンズ駆動装置。[Claims for Utility Model Registration] (1) An objective lens facing an optical disk is supported by a lens holder that rotates around a support shaft, and the lens holder rotates in the direction of rotation around the support shaft. In the objective lens drive device of an optical pickup equipped with a magnetic drive mechanism for driving the support shaft, the inner circumferential surface of the bearing rotatably inserted into the support shaft has a plurality of circumferentially spaced An objective lens driving device for an optical pick-up, characterized in that a protrusion is formed, and the protrusion is in sliding contact with the outer peripheral surface of a support shaft. (2) The objective lens drive device for an optical pickup according to claim 1, wherein the bearing protrusion and the support shaft are formed of a combination of materials whose dynamic frictional resistance decreases as the surface pressure increases. (3) The objective lens drive device for an optical pickup according to claim 2, wherein the material combination of the bearing protrusion and the support shaft is tetrafluoroethylene resin. (4) The objective lens drive device for an optical pickup according to claim 2, wherein the combination of materials of the bearing protrusion and the support shaft is polyethylene and tetrafluoroethylene resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15193587U JPS6456020U (en) | 1987-10-02 | 1987-10-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15193587U JPS6456020U (en) | 1987-10-02 | 1987-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6456020U true JPS6456020U (en) | 1989-04-06 |
Family
ID=31426419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15193587U Pending JPS6456020U (en) | 1987-10-02 | 1987-10-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6456020U (en) |
-
1987
- 1987-10-02 JP JP15193587U patent/JPS6456020U/ja active Pending
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