JPH0443347B2 - - Google Patents
Info
- Publication number
- JPH0443347B2 JPH0443347B2 JP61048488A JP4848886A JPH0443347B2 JP H0443347 B2 JPH0443347 B2 JP H0443347B2 JP 61048488 A JP61048488 A JP 61048488A JP 4848886 A JP4848886 A JP 4848886A JP H0443347 B2 JPH0443347 B2 JP H0443347B2
- Authority
- JP
- Japan
- Prior art keywords
- spindle motor
- drive
- spindle
- hub
- driven
- 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
- Rotational Drive Of Disk (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、フロツピー・デイスクをドライブピ
ンで駆動する形式の非挾持式フロツピー・デイス
ク・ドライブ装置（以下FDD装置という）にお
けるスピンドルモータの駆動方法に関するもので
ある。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a method for driving a spindle motor in a non-pinching type floppy disk drive device (hereinafter referred to as an FDD device) in which a floppy disk is driven by a drive pin. It is related to.
従来、磁気記録媒体として5.25′、8′のフロツピ
ー・デイスク（以下FDという）が主流を占めて
来たが、OA機器の小型化が進むにつれて、マイ
クロ・フロツピーと呼ばれる3.5′のFDの需要が高
まりつゝある。
Traditionally, 5.25' and 8' floppy disks (hereinafter referred to as FDs) have been the mainstream magnetic recording media, but as office equipment becomes smaller, demand for 3.5' FDs called micro floppy disks has increased. It's increasing.
この3.5′のFDは小型であるため、従来の
5.25′や8′のFDのようにスピンドルハブとコレツ
トで挾着する形式を採らずに、硬質のカセツトケ
ースに入れ、そのFDD装置は第１図及び第２図
に示すようにスピンドルハブ７に設けたドライブ
ピン４をFD1に設けたドライブ孔３に係合させて
駆動する方法を採るようにしている。 This 3.5′ FD is small, so it
Instead of using the type of 5.25' or 8' FD that is clamped to the spindle hub and collet, the FDD device is placed in a hard cassette case, and the FDD device is attached to the spindle hub 7 as shown in Figures 1 and 2. A method of driving the FD 1 by engaging the provided drive pin 4 with the drive hole 3 provided in the FD 1 is adopted.
図中、２はドライブ孔３とセンター孔６を設け
たハブ金具、５はスピンドルモータ８によつて駆
動されるスピンドル軸で、前記スピンドルハブ７
はこのスピンドル軸５と結合されている。 In the figure, 2 is a hub metal fitting provided with a drive hole 3 and a center hole 6, 5 is a spindle shaft driven by a spindle motor 8, and the spindle hub 7
is connected to this spindle shaft 5.
なお、図示のものは、無理なくドライブピン４
がドライブ孔３に係合するように、ドライブピン
４をリング状バネ片９の片側に接着剤で固定し、
リボン状バネ９の反対側をネジ１０でスピンドル
ハブ７に固定するようにしている。 In addition, the one shown in the figure can be easily connected to drive pin 4.
Fix the drive pin 4 to one side of the ring-shaped spring piece 9 with adhesive so that it engages with the drive hole 3,
The opposite side of the ribbon spring 9 is fixed to the spindle hub 7 with a screw 10.
ところが、ドライブピン４で駆動する非挾持式
FDDの装置の駆動方法は、従来の挾持式FDD装
置のようにハブ金具２をスピンドルハブ７に密着
させるものがなく、しかもFDとFDケース間、ド
ライブピン４とドライブ孔３間及びスピンドル軸
５とセンター孔６間に不々に遊びがあるため、チ
ヤツキングが一定せず、安定したリード／ライト
が行なわれないことがあるという問題があつた。 However, the non-pinching type driven by drive pin 4
The drive method of the FDD device does not have the hub metal fitting 2 in close contact with the spindle hub 7 as in the conventional clamp-type FDD device. Since there is some play between the center hole 6 and the center hole 6, there is a problem that the tracking is not constant and stable read/write may not be performed.
そこで本発明は、FDの製作精度にバラツキが
あつても、それぞれのFDがその製作状態に応じ
一定の状態でチヤツキングが行なわれるスピンド
ルモータの駆動方法を提供しようとするものであ
る。 SUMMARY OF THE INVENTION Therefore, the present invention provides a method for driving a spindle motor in which chucking is performed in a constant state depending on the manufacturing state of each FD, even if the manufacturing accuracy of the FDs varies.
本発明は上記の問題点を解決するためになされ
たもので、上位装置からの指令信号によるスピン
ドルモータの駆動時に少くとも１回駆動電流又は
電圧を遮断してスピンドルモータを停止又は惰走
させるようにしたものである。
The present invention has been made to solve the above problems, and is designed to stop or coast the spindle motor by cutting off the drive current or voltage at least once when the spindle motor is driven by a command signal from a host device. This is what I did.
このような駆動方法を採ると、スピンドルモー
タの一時的停止又は惰走時にはFDを駆動部に対
して慣性で回転方向に強制的に移動させることに
よつて不正チヤツキングが正され、再びスピンド
ルモータを回転させることにより、常に一定の位
置関係でチヤツキングが行なわれることになる。
If such a drive method is adopted, when the spindle motor temporarily stops or coasts, the FD is forcibly moved in the rotational direction with respect to the drive unit by inertia, thereby correcting incorrect chucking and restarting the spindle motor. By rotating, chucking is always performed in a constant positional relationship.
そのため、この方法によると、リード／ライト
のエラーが少なくなると共に、書込みトラツク密
度の向上が可能になる。 Therefore, according to this method, read/write errors can be reduced and write track density can be improved.
以下本発明の実施例を図面に基づいて説明す
る。
Embodiments of the present invention will be described below based on the drawings.
第３図は本発明実施例におけるスピンドルモー
タの駆動回路を示すもので、システム装置１１か
ら第４図に示すようなスタート指令ａが時間制御
IC13に入力すると、時間制御IC13はモータ制御
IC14に第４図に示すような回転指令信号ｂを出
力し、スピンドルモータ８は起動してから一定時
間後もしくは２〜３回転後一定時間停止又は惰走
し次いで定常回転に移行する。 FIG. 3 shows a spindle motor drive circuit according to an embodiment of the present invention, in which the start command a shown in FIG. 4 from the system device 11 is time-controlled.
When input to IC13, time control IC13 controls motor control.
A rotation command signal b as shown in FIG. 4 is output to the IC 14, and the spindle motor 8 stops or coasts for a certain period of time after being started or after two or three rotations, and then shifts to steady rotation.
なお、上記の実施例はハードによる原理的回路
を示したが、実用化に際しては、制御用ソフトに
同様の制御が行なわれるよう組込むこともでき
る。 In addition, although the above-mentioned embodiment showed the principle circuit by hardware, in the case of practical use, it can also be incorporated into control software so that similar control is performed.
上位装置から回転指令が与えられる都度、スピ
ンドルモータ８の回転→停止又は惰走→回転の制
御によりFDの不正チヤツキングが正され、チヤ
ツキング性能の大巾な改善が図られ、マイクロフ
ロツピーのFDD装置で現在問題となつている不
正チヤツキングによるエラーの問題が解消され
る。
Every time a rotation command is given from a host device, incorrect FD chucking is corrected by controlling the spindle motor 8 from rotation to stop or from coasting to rotation, and the chucking performance is greatly improved, which improves the microfloppy FDD device. The current problem of errors caused by unauthorized chatting will be resolved.
第１図は公知のFDD装置におけるFDとドライ
ブピンの関係を示す平面図、第２図は同一部截断
側面図、第３図は本発明実施例のブロツク図、第
４図はスタート信号と回転指令信号のタイムチヤ
ートである。
８……スピンドルモータ、１１……システム装
置、１２……スピンドルモータ制御装置、１３…
…時間制御IC、１４……モータ制御IC。
Fig. 1 is a plan view showing the relationship between FD and drive pin in a known FDD device, Fig. 2 is a partially cutaway side view of the same, Fig. 3 is a block diagram of an embodiment of the present invention, and Fig. 4 is a start signal and rotation. This is a time chart of the command signal. 8...Spindle motor, 11...System device, 12...Spindle motor control device, 13...
...Time control IC, 14...Motor control IC.
Claims (1)
ータの駆動時に少なくとも１回駆動電流又は電圧
を遮断させてスピンドルモータを停止又は惰走さ
せることを特徴とする非挾持式フロツピー・デイ
スク・ドライブ装置におけるスピンドルモータの
駆動方法。1. A spindle motor in a non-clamping type floppy disk drive device characterized in that when the spindle motor is driven by a command signal from a host device, the drive current or voltage is cut off at least once to stop or coast the spindle motor. Driving method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61048488A JPS62208462A (en) | 1986-03-07 | 1986-03-07 | Driving system for spindle motor in non-sandwiching type floppy disk driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61048488A JPS62208462A (en) | 1986-03-07 | 1986-03-07 | Driving system for spindle motor in non-sandwiching type floppy disk driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62208462A JPS62208462A (en) | 1987-09-12 |
| JPH0443347B2 true JPH0443347B2 (en) | 1992-07-16 |
Family
ID=12804772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61048488A Granted JPS62208462A (en) | 1986-03-07 | 1986-03-07 | Driving system for spindle motor in non-sandwiching type floppy disk driving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62208462A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62252572A (en) * | 1986-04-24 | 1987-11-04 | Teac Co | Magnetic memory device |
-
1986
- 1986-03-07 JP JP61048488A patent/JPS62208462A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62208462A (en) | 1987-09-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |