JPS6155265U

JPS6155265U -

Info

Publication number: JPS6155265U
Application number: JP14008484U
Authority: JP
Priority date: 1984-09-14
Filing date: 1984-09-14
Publication date: 1986-04-14

Description

[Brief explanation of drawings]

第１図及び第２図は本考案をマイクロ・フロツ
ピーデイスクの回転駆動装置に適用した実施例を
示したものであつて、第１図は第１実施例の要部
の平面図、第２図は第２実施例の要部の平面図で
ある。第３図〜第５図はマイクロ・フロツピーデ
イスクの回転駆動装置の従来例を示したものであ
つて、第３図は全体の斜視図、第４図は要部の断
面図、第５図は要部の平面図である。また図面に用いられた符号において、１……デ
イスク、４……中心孔、５……駆動ピン挿入孔、
５ａ……回転方向前方側の辺、５ｂ……外周側の
辺、１０……ターンテーブル、１１……中心ピン
、１２……駆動ピン、２７……可動ストツパー、
２７ａ……先端、２９……ばね、３３……可動ス
トツパー、３３ａ……先端、３７……ばねである
。 1 and 2 show an embodiment in which the present invention is applied to a rotational drive device for a micro-floppy disk. FIG. 1 is a plan view of the main part of the first embodiment, and The figure is a plan view of the main parts of the second embodiment. Figures 3 to 5 show a conventional example of a rotary drive device for a micro floppy disk, in which Figure 3 is an overall perspective view, Figure 4 is a cross-sectional view of the main parts, and Figure 5 is a plan view of the main part. In addition, in the symbols used in the drawings, 1...disc, 4...center hole, 5...drive pin insertion hole,
5a... Front side in the rotational direction, 5b... Outer peripheral side, 10... Turntable, 11... Center pin, 12... Drive pin, 27... Movable stopper,
27a...Tip, 29...Spring, 33...Movable stopper, 33a...Tip, 37...Spring.

Claims

[Scope of utility model registration request]

A center hole and a drive pin insertion hole provided at the center of the disk and a position eccentric from the center are respectively inserted into a center pin and a drive pin provided at the center of the turntable and a position eccentric from the center. The disc is configured to be rotated by the drive pin as the turntable rotates, and at this time, the drive pin urges the disc to move in a direction away from the center of the turntable. In the disk rotation drive device configured to press a side surface of the center pin to position the center of the disk at the center of the turntable, a movable stopper is arranged in the vicinity of the drive pin insertion hole of the disk. The movable stopper is configured so that its tip can freely reciprocate in the direction of entering and leaving the drive pin insertion hole, and the movable stopper is moved and energized so that the tip of the movable stopper enters into the drive pin insertion hole. A biasing means is provided, and the tip of the movable stopper is applied to the biasing means when the drive pin moves forward in the rotational direction within the drive pin insertion hole after being inserted to the rear side in the rotational direction within the drive pin insertion hole. When the moved drive pin reaches the chucking position where it is pressed against the front side in the rotational direction and the outer circumferential side of the drive pin insertion hole, the tip of the movable stopper is moved back to the outside of the drive pin insertion hole. A rotary drive device for a disk, which is configured to move the drive pin forward to the inside of the drive pin insertion hole by an energizing means and lock the drive pin at the chucking position at the tip of the movable stopper.