Patent ID: 6854124

Claim:
A disk drive unit, comprising: a main body; a tray including a disk accommodating section in which an optical disk is held, said tray being retracted into and ejected from said main body; means for driving said tray, said driving means automatically retracting said tray into and ejecting the same from said main body, wherein said driving means moves said tray when said tray is pushed toward inside of said main body; means for detecting movement of said tray; and a control section being connected to said driving means and said detecting means, said control section actuating said driving means when said detecting means detects the movement of said tray toward the inside of said main body, wherein said control section controls said driving means to eject said tray when said detecting means detects the movement of said tray, which has been retracted in said main body, toward the inside of said main body, wherein said control section controls said driving means to retract said tray when said detecting means detects the movement of said tray, which has been ejected from said main body, toward the inside of said main body, and wherein said detecting means includes: two projections being provided to a forward part and a rear part of said tray respectively; and two switching members being provided in said main body and adjacently arranged in the longitudinal direction of said main body, wherein one of said switching members located on the forward side contacts said projection located in the forward part while said tray is retracted in said main body, the both of said switching members contact said projection located in the forward part when said tray is inwardly moved therefrom, and wherein the other switching member located on the rear side contacts said projection located in the rear part while said tray is ejected from said main body, the both of said switching members leave from said projection located in the rear part when said tray is inwardly moved therefrom.