JPS63184447U

JPS63184447U -

Info

Publication number: JPS63184447U
Application number: JP7652687U
Authority: JP
Priority date: 1987-05-21
Filing date: 1987-05-21
Publication date: 1988-11-28

Description

[Brief explanation of the drawing]

第１図〜第５図はこの考案によるデイスクの回
転駆動装置の一実施例を示す図で、第１図は第４
図の支持軸部分の断面図、第２図は回転板を除去
した平面図、第３図は第２図の―線断面図、
第４図は第２図の正面図、第５図は同じく裏面図
、第６図〜第１０図は従来のデイスクの回転駆動
装置を示す図で、第６図は平面図、第７図は第６
図の―線断面図、第８図は回転板を除去した
平面図、第９図は第８図の―線断面拡大図、
第１０図は第９図の支持軸部分の断面図である。図中、１は記録媒体、２は回転板、２ａは中心
穴、２ｂは窓穴、３は受台、４は回転軸、５は腕
板、６は支持軸、７は駆動ピン、８は弾性体、１
２は吸着板、１３は抜止め板である。なお、図中
同一符号は同一又は相当部分を示す。 1 to 5 are diagrams showing an embodiment of the disk rotation drive device according to this invention, and FIG.
Figure 2 is a plan view with the rotating plate removed, Figure 3 is a cross-sectional view taken along the line - in Figure 2,
FIG. 4 is a front view of FIG. 2, FIG. 5 is a back view, FIGS. 6 to 10 are views showing a conventional disk rotation drive device, FIG. 6 is a plan view, and FIG. 6th
Figure 8 is a plan view with the rotating plate removed, Figure 9 is an enlarged cross-sectional view of figure 8,
FIG. 10 is a sectional view of the support shaft portion of FIG. 9. In the figure, 1 is a recording medium, 2 is a rotating plate, 2a is a center hole, 2b is a window hole, 3 is a pedestal, 4 is a rotating shaft, 5 is an arm plate, 6 is a support shaft, 7 is a drive pin, and 8 is a Elastic body, 1
2 is a suction plate, and 13 is a retaining plate. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A rotary plate fixed to a plate-shaped recording medium, having a center hole in the center into which the tip of a rotating shaft of an electric motor is loosely fitted, and having a window hole at an eccentric position with respect to the center hole; A pedestal made of a permanent magnet arranged correspondingly and fixed to the rotating shaft and having at least an outer peripheral portion made of a molded material; an arm plate which is pivoted on a support shaft so as to be able to be displaced in the axial direction and which receives an adsorption force from the pedestal; and an arm plate which is supported by the other end of the arm plate and which is in contact with the pedestal with the arm plate in contact with the pedestal; a drive pin that protrudes through and moves by engaging with a window hole of the rotary plate; and an elastic body provided on the pedestal that engages with the arm plate and biases the drive pin in the radial direction of the rotary shaft. A disk rotation drive device comprising: one end of the support shaft buried in the pedestal, and a retaining plate for preventing the arm plate from coming off at the tip of the support shaft.