JPH04268241A - Cartridge holder ascending/descending mechanism of disk drive - Google Patents

Abstract

PURPOSE:To prevent the guide part to be ascended and descended from floating from a slide plate by providing a stopper having the abutting face of the guide part to be ascended and descended roughly parallelly to the reciprocating motion direction of the slide plate. CONSTITUTION:When a disk cartridge 22 is inserted up to a prescribed position, a switch of a driving motor 33 provided on a chassis 3 is turned on by turning a lock lever 30, and a cam 38 rotates. When the cam 38 rotates, a slide plate operating lever 41 turns clockwise, a slide plate 4 slides, and a cartridge holder 5 descends to a cartridge installing position. Subsequently, a head comes into contact with the recording surface of a disk, and recording and reproduction are executed. Even if pulling-up force larger than pulling-down force of a pulling-down spring 16 is applied to a cartridge holder 5 in such a state due to a service interruption, etc., in the course of recording and reproduction, it can be prevented surely that the cartridge holder 5 floats up by a stopper 12.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention allows a cartridge holder to be moved up and down between a cartridge insertion position and a cartridge mounting position by an inclined lifting guide provided on the slide plate when the slide plate is reciprocated. The present invention relates to a cartridge holder lifting and lowering mechanism for a disk drive.

0002

2. Description of the Related Art As shown in FIGS. 5 and 6, a cartridge holder elevating mechanism for a disk drive is movable between a cartridge insertion position P1 and a cartridge mounting position P2 in a direction perpendicular to the cartridge insertion direction. Elevated/lowered guide parts 103, 103 provided at the front and rear ends of both side plates 102 of the cartridge holder 101, and provided at the front and rear end surfaces of both side plates 105 of a slide plate 104 that reciprocates in a direction parallel to the cartridge insertion direction. When the slide plate 104 moves to the reciprocating position (advanced position) P3, the raised/lowered guide parts 103, 103 are pushed up by the inclined raised/lowered guide parts 106, 106, and the cartridge holder is 101 rises to the cartridge insertion position P1, and on the contrary, the slide plate 104 moves back to the backward position (retracted position).
When located at P4, the inclined elevation guide portions 106, 106
The lifted and lowered guide parts 103, 103 are pushed down by
Cartridge holder 101 is at cartridge mounting position P2
A cartridge holder elevating mechanism is known in which the cartridge holder is lowered to a lower position.

Reference numeral 107 denotes a cartridge holder pull-down spring that pulls down the cartridge holder 101 and brings the lifted/lowered guide part 103 into pressure contact with the lifted/lowered guide part 106. 102, and the other end is locked to the chassis. 108 is slide plate 1
A guide 109 is an eject button provided on the chassis for raising and lowering the cartridge holder 101 in a direction perpendicular to the moving direction of the cartridge holder 04.

0004

[Problems to be Solved by the Invention] However, in the above conventional cartridge holder elevating mechanism, the rollers or the like serving as the elevating guide portion 103 are simply used as the elevating guide portion 106.
Move the cartridge holder 1 up and down on the inclined surface as
01 was merely raised and lowered, there were problems as described below.

(1) If the power is turned off due to a power outage or erroneous operation while the drive is in operation, and the cartridge holder is at the cartridge mounting position P2 without being reset, the cartridge holder may be removed by, for example, turning the drive upside down. When a cartridge pulling force F2 larger than the cartridge pulling force F1 of the pulling spring 107 is applied, the cartridge holder 101, the disk cartridge and the disk housed therein move in the direction of lifting off the slide plate 104.

(2) The disk is a slide plate 104
If the disc moves in a direction that lifts it up, the disc may hit the head and destroy it.

(3) If the chucking between the disk and spindle motor comes off, the disk may not rotate normally when the power is turned on again.

According to the present invention, a stopper is provided, and the stopper prevents the cartridge holder from lifting up, thereby preventing the head from being damaged by the disk. (As shown in FIG. 7, there is also a device in which the lifting guide portion 106 is formed into an inclined notched groove (for example, Utility Model Application No. 62-92313), but this does not have a stopper function).

[0009]

[Means for Solving the Problems] A raised/lowered guide portion provided on a cartridge holder that is movable in a direction perpendicular to the cartridge insertion direction between a cartridge insertion position and a cartridge mounting position, and a raised/lowered guide portion in a direction parallel to the cartridge insertion direction. In a cartridge holder elevating mechanism for a disk drive, the cartridge holder elevating mechanism for a disk drive includes an elevating guide portion that is provided on a slide plate that reciprocates and is inclined at a predetermined angle with respect to the reciprocating direction, the cartridge mounting position being on the lower end side of the elevating guide portion. a stopper that is located above the support surface of the cartridge mounting position support surface and has a contact surface of the guide section that is substantially parallel to the reciprocating direction of the slide plate; has been established.

0010

[Operation] When a disc cartridge is inserted into the cartridge holder at the cartridge insertion position and the slide plate is slid in one direction, the raised/lowered guide part provided on the cartridge holder slides down the raised/lowered guide part. When the cartridge holder reaches the cartridge mounting position support surface on the lower end side, the cartridge holder is lowered to the cartridge mounting position, and the disk of the disk cartridge is chucked by the spindle motor.

[0011] When the lifted/lowered guide section reaches the cartridge mounting position support surface on the lower end side of the lifted/lowered guide section, a stopper is positioned above the lifted/lowered guide section.

[0012] The stopper has a raised/lowered guide part abutting surface that is substantially parallel to the reciprocating direction of the slide plate, and the raised/lowered guide part contact surface prevents the raised/lowered guide part from lifting off from the slide plate. do.

[0013]

Embodiments Next, embodiments of the present invention will be described with reference to the drawings.

In the embodiment, the operation of inserting the disk cartridge and disk into the cartridge holder is referred to as insertion, and the lowering of the inserted disk cartridge and disk to attach it to the chassis is referred to as loading.
The process of lifting the disk cartridge and disk to remove them from the chassis is called unloading, and the process of pulling out the cartridge holder and disk is called ejecting.

FIG. 1 is an exploded perspective view of a disk drive equipped with a cartridge holder elevating mechanism according to the present invention.

In the figure, 1 is a disk drive, and the disk drive 1 includes a chassis 3 provided with a turntable (spindle motor) 2, a slide plate 4 slidably placed on the chassis 3, and a slide plate 4 that is slidably placed on the chassis 3. It includes a cartridge holder 5 disposed on a slide plate 4, and a cartridge holder elevating mechanism 6 that raises and lowers the cartridge holder 5 between a cartridge insertion position and a cartridge mounting position.

The cartridge holder elevating mechanism 6 includes elevating guide portions 7 provided on both left and right side surfaces of the cartridge holder 5, and elevating guide portions 8 erected at the four corners of the slide plate 4.

The lifting/lowering guide portion 7 is formed by providing pin-like projections on the front and rear end surfaces of both left and right sides of the cartridge holder 5.

Further, as shown in FIG. 2, the elevating guide section 8 has an inclined elevating operation surface 9 at its center, and a substantially horizontal cartridge insertion position supporting surface 10 is connected to the upper end thereof.
It is formed by continuously providing a substantially horizontal cartridge mounting position support surface 11 on the lower end surface.

When the lifted/lowered guide section 7 rests on the cartridge insertion position support surface 10, the cartridge holder 5 is in a raised state to the cartridge insertion position, and from this state the slide plate 4 is 1. When slid in the direction of arrow A, the raised/lowered guide portion 7 passes through the inclined raising/lowering operation surface 10 and reaches the cartridge mounting position support surface 11, and the cartridge holder 5 descends to the cartridge mounting position. .

A stopper 12 prevents the cartridge holder 5, which has been lowered to the cartridge mounting position, from lifting off from the slide plate 4.

The stopper 12 includes a raised/lowered guide portion 7 that rests on the cartridge mounting position support surface 11.
A raised/lowered guide portion abutment surface 13 is provided above the slide plate 4 and substantially parallel to the moving direction of the slide plate 4;
The lifted/lowered guide portion abutment surface 13 allows the lifted/lowered guide portion 7 to
This prevents the cartridge from rising from the cartridge mounting position support surface 11.

A gap G1 between the cartridge mounting position support surface 11 and the abutting surface 13 of the raised/lowered guide part 7 is formed to be slightly larger than the outer diameter D1 of the pin-shaped projection as the raised/lowered guide part 7.

Further, an inclined guide surface 14 parallel to the elevating/lowering operation surface 9 is connected to one end of the abutting surface 13 of the elevating/lowering guide portion.

[0025] The lifting operation surface 9 and the guide surface 14
The gap G2 is also formed to have approximately the same size as the gap G1, and the height H1 of the tip of the guide surface 14.
is formed to be slightly larger than the height H2 of the pin-shaped protrusion as the guided portion 7 resting on the cartridge insertion position support surface 10 to prevent the pin-shaped protrusion from riding on the upper surface of the stopper 12. It is configured so that it does not.

15 is the vertical direction of the cartridge holder 5 (
A guide 16 is provided on the chassis for raising and lowering the cartridge holder 5 in a direction perpendicular to the direction of movement of the slide plate 4. Reference numeral 16 is a cartridge holder pull-down spring that pulls down the cartridge holder 5 toward the slide plate 4 side.

Next, the operation will be described.

When the disk cartridge 22 is inserted into the cartridge entrance/exit port 21 of the cartridge holder 5 at the cartridge insertion position, the shutter pin 25 fits into the shutter pin engagement recess 24 of the shutter 23 which is slidably attached to the disk cartridge 22. a shutter opening/closing lever 2 with the shutter pin 25 provided on one end side;
6 opens the shutter 23 while rotating around the shaft 27 at the other end in the cartridge insertion direction (clockwise in FIG. 1).

When the disk cartridge 22 is inserted to a predetermined position, the disk cartridge 22
When the trigger lever 29 of the shutter opening/closing lever locking mechanism 28 is pressed and rotated clockwise, the lock lever 30, which had been prevented from rotating clockwise by the trigger lever 29, rotates clockwise. The lock pin engaging portion 31 provided on the lock lever 30 engages with the lock pin 32 connected to the upper part of the shutter pin 25 of the shutter opening/closing lever 26, and the shutter opening/closing lever 26 rotates back. The lock lever 3
0 in the clockwise direction, a drive motor 33 provided in the chassis 3 is switched on, and the cam 38 is rotated via a rotation transmission mechanism 37 consisting of a belt 34, a pulley 35, a reduction gear 36, and the like.

When the cam 38 rotates, a slide plate operating lever 41, in which a cam groove fitting pin 40 provided on the lower surface of the central portion is fitted into a cam groove 39 for driving the slide plate provided on the upper surface of the cam 38, is rotated. The slide plate 4 rotates clockwise in FIG.
slides in the direction of arrow A in FIG. The pin-shaped protrusion slides down to reach the cartridge mounting position support surface 11, and the cartridge holder 5 descends to the cartridge mounting position.

The disk 44 in the disk cartridge 22 accommodated in the cartridge holder 5
is chucked onto the turntable 2, and the head contacts the recording surface of the disk to perform recording and reproduction.

[0032] If the power is cut off due to a power outage or the like during recording and playback,
Even if the head remains in contact with the disk and a pulling force greater than the pulling force of the cartridge holder pull-down spring 16 is applied to the cartridge holder 5 for some reason in this state, the stopper 12 This makes it possible to reliably prevent the cartridge holder 5 from floating up.

In the embodiment shown in the drawings, slanted grooves are cut out in the metal plate provided upright at the four corners of the slide plate, so that the lower surface of the groove serves as the lifting guide section 8, and the upper surface thereof serves as the stopper 12. However, the stopper 12 may be formed separately from the lifting guide section 8.

[0034]

Effects of the Invention The cartridge holder elevating mechanism of the present invention has the structure as described above, and since a stopper is attached, it has the following effects.

(1) Even if the power is cut off due to a power outage or the like during recording and playback, and a holder pulling force greater than the holder pulling force of the cartridge holder pulling spring is applied to the cartridge holder, the stopper allows the cartridge holder to can be prevented from floating up.

In particular, since the raised/lowered guide part abutting surface of the stopper with which the raised/lowered guide member comes into contact when a holder pulling force is applied is formed approximately parallel to the sliding direction of the slide plate, the raised/lowered guide part abuts. Compared to the case where the surface is formed in an inclined shape, lifting of the cartridge holder can be more reliably prevented.

(2) Due to the reason mentioned in item (1) above, it is possible to prevent the head from being damaged by the disk. It also prevents the disc and turntable from coming off the chuck, allowing the disc to rotate normally when the power is turned on again.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a disk drive equipped with a cartridge holder elevating mechanism of the present invention.

FIG. 2 is an enlarged view of the main parts.

FIG. 3 is a side view of the cartridge holder at the cartridge insertion position.

FIG. 4 is a side view of the cartridge holder when it is in the cartridge mounting position.

FIG. 5 is a side view of a conventional example.

FIG. 6 is a side view of a conventional example.

FIG. 7 is a side view of main parts of another conventional example.

[Explanation of symbols]

1...Disk drive, 5...Cartridge holder, 6...
Cartridge holder elevating mechanism, 7...Elevated/lowered guide section, 8
... Lifting guide portion, 9... Lifting operation surface, 10... Cartridge insertion position support surface, 11... Cartridge mounting position support surface,
12...Stopper, 13...Elevated/lowered guide portion contact surface.

Claims (1)

[Claims] 1. A raised/lowered guide portion provided on a cartridge holder that is movable in a direction perpendicular to the cartridge insertion direction between a cartridge insertion position and a cartridge mounting position, and reciprocated in a direction parallel to the cartridge insertion direction. The slide plate is provided with an elevating guide part that is inclined at a predetermined angle with respect to the reciprocating direction, and the cartridge mounting position support is provided above the cartridge mounting position support surface on the lower end side of the elevating guide part. A cartridge for a disk drive, characterized in that a stopper is provided above the raised/lowered guide part resting on a surface and has a contact surface of the raised/lowered guide part substantially parallel to the reciprocating direction of the slide plate. Holder lifting mechanism.