JPS6133247U

JPS6133247U - Recording/playback device

Info

Publication number: JPS6133247U
Application number: JP11623984U
Authority: JP
Inventors: 了活井上; 光春磯田
Original assignee: ソニー株式会社
Priority date: 1984-07-31
Filing date: 1984-07-31
Publication date: 1986-02-28

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

[Brief explanation of drawings]

第１図は磁気ディスクを示す平面図、第２図は第１図の
Ｘ−Ｘ線による断面図、第３図は従来の記録再生装置の
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図はチャッキングの説明図、第７図は挿入トルク
特性図、第８図はこの考案の一実施例の主要部である板
ばね、駆動ピン、ピンを示す斜視図、第９図、第１０図
ａ，ｂはチャッキングの説明図、第１１図は挿入トル
ク特性図である。 −図中、１はスピンドル、５は板はね、５Ａは舌片、６
は駆動ピン、１３はピン、Ｄは磁気ディスク、Ｃはセン
タコア、Ｈ１，Ｈ２は第１、第２の穴、Ｗ３は第３の側
壁、Ｓは磁気シートである。FIG. 1 is a plan view showing a magnetic disk, FIG. 2 is a cross-sectional view taken along the line X-X in FIG. 1, FIG. 3 is an enlarged cross-sectional view showing the rotational drive mechanism of a conventional 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 an explanatory diagram of chucking, Fig. 7 is an insertion torque characteristic diagram, Fig. 8 is a perspective view showing the main parts of an embodiment of this invention, such as a leaf spring, a drive pin, and a pin, Fig. 9 , FIGS. 10a and 10b are explanatory diagrams of chucking, and FIG. 11 is an insertion torque characteristic diagram. - In the figure, 1 is the spindle, 5 is the plate, 5A is the tongue piece, 6
is a drive pin, 13 is a pin, D is a magnetic disk, C is a center core, H1 and H2 are first and second holes, W3 is a third side wall, and S is a magnetic sheet.

Claims

[Scope of utility model registration request]

Chucking a magnetic disk having a spindle and a center core having first and second holes into which a driving pin supported by an elastic member is inserted at a position apart from the spindle so as to rotate together with the spindle. In a recording and reproducing apparatus that performs recording and reproduction, a pin supported by the elastic member is provided between the spindle and the drive pin, and at an initial stage when the drive pin enters the second hole, the When the pin is pushed down by the center core, the driving pin acts to move away from the cam side of the second hole, and when the pin enters the second hole, the driving pin moves toward the cam side. A recording/reproducing device characterized in that the pin is set at a position where the pin is pressed against the pin with a predetermined force.