JPH069104B2 - Disk drive - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device, and more specifically, a type in which the disk drive is rotated by detecting the insertion of the disk and the disk is centered according to the closing of the door of the insertion port. Disk drive device.

Conventionally, various disk drive devices including a magnetic disk device have been known. For example, in a magnetic disk drive device, there is a type in which a magnetic disk is mounted in conjunction with the closing of a door provided at the insertion port, the driving body is stopped at the time of mounting, and the magnetic disk is not rotated. In the case of such a device, the center hole of the magnetic disk may be mounted in an eccentric state with respect to the center of rotation of the driving body, and it remains incomplete, that is, the center of the magnetic disk and the rotation of the driving body It may be attached with the centers not matching.

In such a case, there is a drawback that the peripheral portion of the center hole of the magnetic disk is damaged when the magnetic disk is mounted. Further, there is a type of device in which the spindle, which is the driving body, is always rotated and the magnetic disk is mounted in this state. However, in such a type of device, power consumption is wasted because it is constantly rotated. There is a drawback that the life of the drive system becomes short.

Further, there is a device for mounting the magnetic disk by rotating the driving body in conjunction with the closing of the door, that is, the mounting operation of the magnetic disk to the driving body, but when the door is closed quickly, the drive is performed. The system had the drawback that it couldn't respond sufficiently and was not so meaningful.

The present invention has been made to eliminate the above-mentioned conventional drawbacks. When the door is opened and the magnetic disk is inserted, the drive body is rotated to close the door, that is, to mount the magnetic disk on the drive body. It is a magnetic disk device of a type that stops rotation after a fixed time after completion and is in a standby state for use. An object of the present invention is to provide a magnetic disk device configured so that it does not damage the peripheral portion of the center hole of the magnetic disk, consumes less power, and is not eccentrically mounted.

To achieve the above object, according to the disk drive device of the present invention, a drive means having a spindle for rotating the disk-shaped recording medium, and a first signal is output when the disk-shaped recording medium is inserted. First signal generating means, a center cone for mounting the disc-shaped recording medium on the spindle, and a second signal in conjunction with the mounting operation of the disc-shaped recording medium on the spindle by the center cone. The second signal generating means for outputting and the spindle according to the first signal are rotated, and the disk-shaped recording medium is mounted on the rotated spindle by the center cone,
A configuration is provided that includes a control unit that puts the spindle into a stopped state and puts the disk-shaped recording medium into a standby state after a predetermined time has elapsed from the output of the second signal.

Hereinafter, details of the present invention will be described based on embodiments shown in the drawings.

In FIG. 1, reference numeral 1 indicates a photo interrupter provided at a position where the insertion of the magnetic disk is completed,
The insertion of the magnetic disk is detected, and the detection signal 2 is sent to a one-shot multivibrator (hereinafter abbreviated as one-shot multi). The one-shot multi 3 sends the one-shot signal 4 to the preset terminal of the D flip-flop 5 in response to the detection signal 2.

Reference numeral 6 denotes a micro switch, which detects the closing of the door and sends a detection signal 7 to the one-shot multi 8.

The one-shot multi 8 inputs the one-shot signal 9 to the D input terminal of the D flip-flop 5 when the detection signal 7 of the micro switch 6 is input.

One-shot signal 4 of the one-shot multi 3,8
9, the spindle control signal 10 is generated, the motor drive circuit 11 is controlled, the rotation of the motor 12 is controlled,
The spindle 13, which is a driving body, is rotated. A center cone 14 is arranged at a position corresponding to the spindle 13.

In FIG. 1, reference numeral 15 indicates a door, and reference numeral 16 indicates a magnetic disk.

Next, the operation of this embodiment configured as described above will be described.

First, by inserting a magnetic disk, the photo interrupter 1 detects this, sends out a detection signal 2, and the one-shot multi 3 outputs a one-shot signal 4. At the beginning of this one-shot signal 4, the D flip-flop 5 is inverted as shown in FIG. 2 (a) Spindle control signal 1
0 is sent out and the motor 1 is driven through the motor drive circuit 11.
Rotate 2.

Next, when the door 15 is closed, the center cone 14 descends in synchronism with it and the magnetic disk 16 is moved to the spindle 13
And the micro switch 6 is turned on,
The detection signal 7 is generated. By this detection signal 7, a one-shot signal 9 is obtained from the one-shot multi 8 synchronously as shown in FIG. And this one-shot signal 9
At the falling edge of, the spindle control signal 10 is inverted
(b) The motor 12 is stopped via the motor drive circuit 11 after a fixed time [that is, (c)] has passed after the door is closed.

In this way, the spindle is rotated at the same time when the disc is inserted, the disc is mounted while rotating, and the eccentricity of the disc is corrected in cooperation with the center cone 14, and the precise mounting is completed, and then only for a certain period of time. After the lapse of time, the rotation of the spindle can be stopped, the spindle can be made to stand by in an accurate mounted state, and the rotation can be started when the disk drive device is actually driven. Therefore, a disk drive device can be obtained in which eccentricity of the disk and incompletely mounted state do not occur, and damage to the center hole and waste of electric power due to constant rotation of the spindle do not occur.

[Brief description of drawings]

FIG. 1 is a block circuit diagram for explaining an embodiment of the present invention,
FIG. 2 is a timing chart for explaining the operation. 1 ... Photointerrupter, 2, 7 ... Detection signal 3, 8 ... One-shot match, 4, 9 ... One-shot signal 5 ... D flip-flop, 10 ... Spindle control signal 11 ... Motor drive circuit, 13 ... Spindle 14 ... Center cone, 15 … Door 16… Magnetic disk.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tetsuo Tomita 1248 Shimokagemori, Chichibu City, Saitama Prefecture, Canon Electronics Co., Ltd. (72) Shigeki Koizumi 1248 Shimokagemori, Chichibu City, Saitama Prefecture, Canon Electronics Co., Ltd. (72) Inventor Masaru Koyahara 1248 Shimokagemori, Chichibu, Saitama Prefecture Canon Electronics Co., Ltd. (56) References JP-A-56-117371 (JP, A) JP-A-56-16960 (JP, A) )

Claims (1)

[Claims] 1. A drive means having a spindle for rotating a disc-shaped recording medium, a first signal generating means for outputting a first signal when the disc-shaped recording medium is inserted, and the disc-shaped recording medium. A center cone for mounting on the spindle; second signal generating means for outputting a second signal in synchronization with the mounting operation of the disk-shaped recording medium on the spindle by the center cone; The spindle is rotated according to a signal, the disk-shaped recording medium is mounted on the rotated spindle by the center cone, and the spindle is stopped after a predetermined time has elapsed since the second signal was output. And a control means for putting the disk-shaped recording medium into a standby state as a disk drive special-purpose device.