JPS6113377U - magnetic disk - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の磁気ディスクを示す平面図、第２図は第
１図のＡ−Ａ線による断面図、第３図は記録再生装置の
回転駆動機構を示す拡大断面図、第４図は第３図の回転
駆動機構に用いる板ばねを示す斜視図、第５図ａ， ｂ
，第６図は磁気ディスクのチャツキング説ｇ＠、第７図
はこの考案の一、実施例を示す磁気ディスクの断面図で
ある。 図中、１はセンタコア、Ｉ Ａ， １ Ｂハ第１、第
２の穴、ＩＣは突出部、２は磁気シート、４は滑性層、
Ｄは磁気ディスク、Ｓはスピンドル、Ｒはロータボス、
ＭＣは磁石、Ｌは板ばね、Ｐは駆動ピンである。FIG. 1 is a plan view showing a conventional magnetic disk, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, FIG. 3 is an enlarged cross-sectional view showing the rotational drive mechanism of a recording/reproducing device, and FIG. A perspective view showing the leaf spring used in the rotational drive mechanism in Figure 3, Figures 5a and b.
, FIG. 6 is a chucking theory of a magnetic disk, and FIG. 7 is a sectional view of a magnetic disk showing an embodiment of this invention. In the figure, 1 is a center core, IA, 1B are first and second holes, IC is a protrusion, 2 is a magnetic sheet, 4 is a slippery layer,
D is the magnetic disk, S is the spindle, R is the rotor boss,
MC is a magnet, L is a leaf spring, and P is a drive pin.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 記録再生装置のスピン下ルに取り付けたロータボスに設
けた磁石に吸引されて前記スピンドルが突入する第１の
穴と、前記スピンドルとともに回転する駆動ピンが突入
す乏第２の穴を有し、前記スピンドルと前記駆動ピンで
チャツキングされるセンタコアを備えた磁気ディスクに
おいて、少なくとも前記センタコアの前記ロータボスと
対向する面に滑性層を設１ｊたことを特徴とする磁気デ
ィスク。a first hole into which the spindle enters by being attracted by a magnet provided on a rotor boss attached to a spin bottom of the recording/reproducing device; and a second hole into which a drive pin rotating together with the spindle enters; 1. A magnetic disk comprising a center core chucked by a spindle and the drive pin, characterized in that a slippery layer is provided on at least a surface of the center core facing the rotor boss.