JPH01146340U

JPH01146340U -

Info

Publication number: JPH01146340U
Application number: JP4072888U
Authority: JP
Priority date: 1988-03-28
Filing date: 1988-03-28
Publication date: 1989-10-09
Anticipated expiration: 2003-03-28
Also published as: JPH0627014Y2

Description

[Brief explanation of the drawing]

第１図乃至第８図は本考案デイスクの回転駆動
装置を磁気デイスクドライバーにおけるデイスク
駆動装置に適用した実施の一例を示すものであり
、第１図はデイスク駆動装置の要部と磁気デイス
クカセツトを示す斜視図、第２図は磁気デイスク
が装着された状態で示すデイスク駆動装置の平面
図、第３図は磁気デイスクドライバーの要部を示
す中央垂直断面図、第４図は駆動装置の要部を第
１図と異なる向きで示す斜視図、第５図及び第６
図は回転板に取り付けられる前の状態における回
動レバーを示し、第５図は平面図、第６図は側面
図、第７図は磁気デイスクが回転板に装着される
ときの駆動ピン及び回動レバーの動きを説明する
ための断面図、第８図は回転板に対する磁気デイ
スクの位置決めが為される動作を説明するための
要部平面図、第９図及び第１０図は従来のデイス
クの回転駆動装置の一例を示すもので第９図は平
面図、第１０図はデイスクが装着された状態で第
９図のＸ―Ｘ線に沿つて切断した断面図、第１１
図は従来のデイスクの回転駆動装置の他の例を示
す要部の水平断面図である。符号の説明、７……デイスク、９……センター
コア、１０……主係合孔、１１……駆動ピン係合
孔、１３……デイスクの回転駆動装置、１８……
駆動軸、１８ａ……主係合軸、２１……回転板、
２３……（回転板の）孔、２６……回動レバー、
２７……主部、２７ａ……（主部の）基端部、２
７ｂ……（主部の）先端部、２９……弾発片、３
３……駆動ピン。 1 to 8 show an example of an embodiment in which the disk rotation drive device of the present invention is applied to a disk drive device in a magnetic disk driver, and FIG. 1 shows the main parts of the disk drive device and a magnetic disk cassette. 2 is a plan view of the disk drive device with a magnetic disk attached, FIG. 3 is a central vertical sectional view showing the main parts of the magnetic disk driver, and FIG. 4 is a main part of the drive device. FIGS. 5 and 6 are perspective views showing a different orientation from FIG.
The figures show the rotating lever in a state before it is attached to the rotating plate, Fig. 5 is a plan view, Fig. 6 is a side view, and Fig. 7 shows the drive pin and rotating lever when the magnetic disk is attached to the rotating plate. FIG. 8 is a plan view of the main part to explain the operation of positioning the magnetic disk with respect to the rotary plate, and FIGS. 9 and 10 are views of the conventional disk. Fig. 9 is a plan view, Fig. 10 is a sectional view taken along line X--X in Fig. 9 with a disk attached, and Fig. 11 shows an example of a rotary drive device.
The figure is a horizontal cross-sectional view of the main parts of another example of a conventional disk rotation drive device. Explanation of symbols, 7...Disk, 9...Center core, 10...Main engagement hole, 11...Drive pin engagement hole, 13...Disk rotation drive device, 18...
Drive shaft, 18a... Main engagement shaft, 21... Rotating plate,
23...hole (of the rotating plate), 26...rotating lever,
27...Main part, 27a...Proximal end (of the main part), 2
7b...Tip (of main part), 29...Bullet piece, 3
3... Drive pin.

Claims

[Claims for Utility Model Registration] Rotation of a disk to which a disk is removably attached and has a center core having a main engagement hole located at the center and a drive pin engagement hole located away from the center. The drive device includes: a rotary plate fixed to the drive shaft and on which the center core is placed; a main engagement shaft protruding from the center of the rotary plate and engaging with the main engagement hole of the disk; It protrudes from a position offset from the center of the plate, engages with the drive pin engagement hole, can be displaced in the axial direction, and is biased with an elastic force in the direction of increasing the distance between it and the main engagement shaft. A co-moveable lever is integrally formed of a leaf spring material, and includes a plate-shaped main part and a resilient piece whose one end is connected to a position near the tip of the main part. A disk characterized in that a drive pin is provided protruding from the tip of the main part of the rotary lever, the base end is rotatably supported on the rotary plate, and the other end of the resilient piece is fixed to the rotary plate. Rotary drive device.