JPH0186472U - - Google Patents
Info
- Publication number
- JPH0186472U JPH0186472U JP17942687U JP17942687U JPH0186472U JP H0186472 U JPH0186472 U JP H0186472U JP 17942687 U JP17942687 U JP 17942687U JP 17942687 U JP17942687 U JP 17942687U JP H0186472 U JPH0186472 U JP H0186472U
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- magnetic disk
- actuator
- yoke
- magnetic
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims 1
- 229910052761 rare earth metal Inorganic materials 0.000 claims 1
- 150000002910 rare earth metals Chemical group 0.000 claims 1
- 229910000859 α-Fe Inorganic materials 0.000 claims 1
Landscapes
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Description
第１図は本考案の実施例を示す要部縦断面図、
第２図は第１図におけるＢ−Ｂ線断面図、第３図
は本考案の他の実施例を示す要部断面平面図、第
４図は従来のものを示す一部破砕一部断面平面図
、第５図は第４図におけるＡ矢視図である。
１，１４：ヨーク、２，１１：永久磁石、５：
アーム、６：可動コイル、１２：検出コイル。
FIG. 1 is a vertical sectional view of the main part showing an embodiment of the present invention.
Fig. 2 is a sectional view taken along the line B-B in Fig. 1, Fig. 3 is a sectional plan view of main parts showing another embodiment of the present invention, and Fig. 4 is a partially fragmented, partially sectional plan view showing a conventional one. 5 is a view taken along arrow A in FIG. 4. 1, 14: Yoke, 2, 11: Permanent magnet, 5:
Arm, 6: Moving coil, 12: Detection coil.
Claims (1)
を固着し、永久磁石面を対向させて形成した磁気
回路を設けてなるハウジングと、一端に可動コイ
ルを他端に磁気ヘツドを各々固着して揺動自在に
形成したアームとからなり、前記磁気回路の空隙
部に可動コイルを配設して構成した磁気デイスク
用アクチユエータにおいて、前記アームを回動自
在に軸支する軸受の近傍に、横断面輪郭を円弧状
に形成してなる他の永久磁石と検出コイルとを対
向かつ相対移動自在に設け、前記他の永久磁石の
上端縁と磁気デイスクとの距離を２mm以上に保持
すると共に、磁性材料により横断面輪郭を円弧状
に形成してなるヨークを前記他の永久磁石と対向
させかつ相対移動不能に設けたことを特徴とする
磁気デイスク用アクチユエータ。 (2) 検出コイルをアームに、他の永久磁石とヨ
ークとをハウジングに設けた実用新案登録請求の
範囲第１項記載の磁気デイスク用アクチユエータ
。 (3) ヨークと他の永久磁石との円周方向端部が
相互に接触している実用新案登録請求の範囲第１
項若しくは第２項記載の磁気デイスク用アクチユ
エータ。 (4) 永久磁石が希土類磁石であり、他の永久磁
石がフエライト磁石である実用新案登録請求の範
囲第１項ないし第３項何れかに記載の磁気デイス
ク用アクチユエータ。[Scope of Claim for Utility Model Registration] (1) A housing comprising a magnetic circuit formed by fixing a yoke to one side of permanent magnets with different polarities and facing the permanent magnet surfaces, and a moving coil at one end. A magnetic disk actuator is composed of arms each having a magnetic head fixedly attached to the end thereof so as to be swingable, and a movable coil is disposed in the gap of the magnetic circuit. In the vicinity of the supporting bearing, another permanent magnet having an arcuate cross-sectional profile and a detection coil are provided facing each other and movable relative to each other, and the distance between the upper edge of the other permanent magnet and the magnetic disk is adjusted. An actuator for a magnetic disk, characterized in that a yoke having a diameter of 2 mm or more and having an arcuate cross-sectional profile made of a magnetic material is provided to face the other permanent magnet and to be immovable relative to the other permanent magnet. (2) The actuator for a magnetic disk according to claim 1, which is a utility model and includes a detection coil in an arm and a housing in which other permanent magnets and a yoke are provided. (3) Utility model registration claim No. 1 in which the circumferential ends of the yoke and other permanent magnets are in contact with each other.
The actuator for a magnetic disk according to item 1 or 2. (4) The magnetic disk actuator according to any one of claims 1 to 3, wherein the permanent magnet is a rare earth magnet and the other permanent magnet is a ferrite magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17942687U JPH055833Y2 (en) | 1987-11-25 | 1987-11-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17942687U JPH055833Y2 (en) | 1987-11-25 | 1987-11-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0186472U true JPH0186472U (en) | 1989-06-08 |
| JPH055833Y2 JPH055833Y2 (en) | 1993-02-16 |
Family
ID=31470980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17942687U Expired - Lifetime JPH055833Y2 (en) | 1987-11-25 | 1987-11-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH055833Y2 (en) |
-
1987
- 1987-11-25 JP JP17942687U patent/JPH055833Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH055833Y2 (en) | 1993-02-16 |
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