JPH03216885A - Disk drive - Google Patents

Abstract

PURPOSE:To reduce the thickness of a disk drive by arranging a printed board above the upper face of a cartridge holder and under the front end of a head arm. CONSTITUTION:When a cartridge holder 4 rises to a cartridge insertion position, a head arm 19 is pushed higher than this position by the cartridge holder, and the front end of the head arm projects above the upper face of the cartridge holder. Since a printed board 2 is arranged above the cartridge holder 4 in the cartridge insertion position and under the front end of the head arm 19, the thickness of the printed board is absorbed by the difference in height between the cartridge holder 4 and the front end of the head arm 19. Thus, the thickness of the disk drive is reduced by absorption to make the disk drive thin.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a disk drive in which the device can be made thinner by arranging a printed circuit board above a cartridge holder.

[Summary of the Invention j The present invention provides that when the cartridge holder rises to the cartridge insertion position, the head arm also rises to a state where the disk cartridge can be inserted into the cartridge holder,
When the disc cartridge is inserted into the cartridge holder, the cartridge holder is lowered to the cartridge mounting position, the disc in the disc cartridge is mounted on the turntable, and then the head arm is lowered and mounted on the head arm. In a disk drive whose head is in contact with the surface of the disk, by arranging the printed circuit board at a position above the top surface of the cartridge holder at the cartridge insertion position and below the tip of the head arm, This allows the disk drive to be made thinner.

[Prior Art] A cartridge holder that moves up and down between a cartridge insertion position and a cartridge mounting position is provided, and when a disc cartridge is inserted into the cartridge holder, the cartridge holder descends to the cartridge mounting position and moves into the disc cartridge. When the disc is mounted on the turntable on the shear, the head arm also lowers as the cartridge holder lowers, and the head attached to the head arm contacts the surface of the disc to perform recording and reproduction. A disk drive is known in which when an eject button is pressed after recording and reproduction is completed, the cartridge holder is raised to the cartridge mounting position and the head arm is also pushed up by the cartridge holder.

[Problems to be Solved by the Invention] In the disk drive described above, the cartridge holder was conventionally placed above the yarn, and the printed circuit board for electrical control was placed below the yarn. The existence of this was a major obstacle in making disk drives thinner.

The present invention has been made for the purpose of solving the above-mentioned conventional problems and providing a thinner disk drive.

[Means for Solving the Problems] In a disk drive in which when the cartridge holder rises to the cartridge insertion position, the head arm also rises so that a disk cartridge can be inserted into the cartridge holder. In addition, the printed circuit board was placed below the tip of the head arm.

1 Effect] When the cartridge holder rises to the cartridge insertion position, the head arm is pushed up further by the cartridge holder, and the tip of the head arm becomes in a state of protruding above the upper surface of the cartridge holder. In the present invention, since the printed circuit board is placed above the cartridge holder at the cartridge insertion position and below the tip of the head arm, the thickness of the printed circuit board is equal to the level difference between the cartridge holder and the tip of the head arm. Since it is in an absorbed state, the wall thickness of the disk drive can be reduced accordingly, making it possible to make the disk drive thinner.

[Embodiment] Next, a disk drive of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of the disk drive 1 with the printed circuit board 2 removed, and a cartridge holder 4 is mounted on the disk drive 1's chassis 3, which can be moved up and down between the cartridge insertion position (raised position) and the cartridge mounting position. is installed on.

When the disc cartridge 5 is inserted into the cartridge holder 4 through the cartridge entrance/exit port 7 of the front panel 6, the shutter opening/closing arm 8 attached to the cartridge holder 4 rotates while the disc cartridge 5 is inserted into the cartridge holder 4.
When the shutter 9 of the disc cartridge 5 is opened, the slide plate lock lever 10 is
is pressed and the slide plate 11.6 is unlocked by the slide plate lock lever 10 {slides in the holder loading direction by the spring force of the slide plate return spring 12, and the slide plate 11.
The slanted lifting/lowering operation parts 13...l3 provided on the left and right sides of the holder allow the lifting/lowering operating parts l4...14
When the cartridge holder 4 provided with these lifting/lowering operation parts l4...l4 descends in the vertical direction along the lifting/lowering guide part l5 of the chassis 3 and reaches the cartridge mounting position, the disk 16 in the cartridge holder 4 Hap l7
is mounted on the turntable l8 mounted on the chassis 3, and the head 20 mounted on the lower surface of the tip of the head arm 19, which has descended as the cartridge holder 4 descends, is mounted on the turntable 18. It comes into contact with the upper surface of the mounted disk l6.

While rotating the turntable 18 and the disk l6 mounted thereon by a turntable rotation drive mechanism 23 consisting of a motor 2I and a belt 22,
Head carriage 24 to which the head arm 19 is attached
is slid by a carriage drive mechanism 27 consisting of a motor 25 and a ball shaft (helical shaft) 26, and recording and reproduction is performed by moving the head 2o in the radial direction of the disk 16.

When the eject button 28 is pressed after recording and playback is completed, the slide plate 11 slides in the unloading direction against the spring force of the slide plate return spring 12, and the inclined lift operation part 13 moves the lifted and lowered operation part. l
4 to raise the cartridge holder 4 to the cartridge insertion position. When the cartridge holder 4 rises, the head arm operation part 29 provided on the top surface of the cartridge holder 4 comes into contact with the tongue piece 30 for head arm rotation operation provided on the head arm l9, and pushes the tongue piece 30. Since the head arm l9 is raised, the head arm l9 rotates upward using the leaf spring material attached to the head carriage 24 as a fulcrum, so that its tip and the head 20 protrude further upward from the upper surface of the cartridge holder 4. It has become.

Then, below the tip of the head arm 19 protruding from the base of the cartridge holder 4 as described above,
and the cartridge holder 4 in the cartridge insertion position.
The printed circuit board 2 is arranged above the upper surface of the board. 3l is a printed circuit board support piece provided on the chassis 3 for mounting and fixing the printed circuit board 2 in the above position, and 32 is a metal shield case.

Note that the shutter opening/closing arm 8 is built into the cartridge holder 4 so that the shutter opening/closing arm 8 does not get in the way of arranging the printed circuit board 2 above the cartridge holder 4.

The disk drive of the embodiment has the above configuration, and the cartridge holder 4 at the cartridge insertion position.
Since the printed circuit board 2 is placed above the disk drive, the presence of the printed circuit board 2 does not interfere with the lifting and lowering of the cartridge holder 4, and the cartridge holder 4 can be moved up and down smoothly in the same way as in a conventional disk drive. .

[Effects of the Invention] As described above, in the disk drive of the present invention, the printed circuit board is disposed above the top surface of the cartridge holder at the cartridge insertion position and below the tip of the head arm, so that the cartridge holder The distance (spacing) from the top surface to the tip of the head arm absorbs or cancels out the thickness of the printed circuit board, making it possible to reduce the thickness of the disk drive by that amount and make the disk drive thinner. effective.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the disk drive with the printed circuit board removed, and FIG. 2 is a sectional view showing the positional relationship between the cartridge holder, the head arm, and the printed circuit board when the cartridge holder is in the cartridge insertion position. 1...Disk drive, 2...Printed circuit board, 4...
- Cartridge holder, 19...head arm.

Claims (1)

[Claims] (1) A disk drive characterized in that a printed circuit board is disposed above the cartridge holder at the cartridge insertion position and below the tip of the head arm.