JPH0461059A - Information processor - Google Patents

Abstract

PURPOSE:To surely execute loading and unloading by making a turn table movable in the approximately vertical direction to the surface of a recording medium to be loaded. CONSTITUTION:A 3rd arm 14 contacts near a hub 3 of a recording medium 1 outside of an information storage area, and pushes up the recording medium 1 in a cartridge 2. And, a 2nd arm 16a, 16b is movable in the left and right direction in the figure following a guiding groove 16c. In the case, when the recording medium 1 is pushed up in the cartridge 2 by the 3rd arm 14, the hub does not contact when loading and unloading of the recording medium 1, and there is no need to move the turn table 14. Then, the space necessary for the operation of loading and unloading of the cartridge 2 is made minimal, and the danger of contact of the recording medium to each part of the mechanism can be evaded. Thus, the loading can be executed safely and surely with a simple constitution, without moving the cartridge 2 up and down inside the device.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to an information processing device using a disk-shaped recording medium.

(Prior Art) In an information processing device that records and reproduces information, such as an optical disk device, a disk-shaped recording medium contained in a cartridge is loaded into a predetermined position of a disk drive device, and this recording medium is driven by a motor. It is designed to be rotationally driven.

The information written on the recording medium is in the form of concentric tracks with the center of rotation being the same axis.

The information is recorded or reproduced by an optical pickup head that accurately traces the track.

Incidentally, it is desirable that the axis of the rotational drive motor and the center position of the track coincide with each other as accurately as possible.

In addition, the perpendicularity between the optical axis of the optical head and the surface of the recording medium, as well as the perpendicularity between the rotation axis of the rotary drive motor and the surface of the recording medium, which can cause surface wobbling on the surface of the recording medium, is highly accurate. is required.

Conventionally, under such restrictions, as shown in Figure 8,
A recording medium was being loaded into the recording medium drive device.

That is, the recording medium 1 is built into the cartridge 2 with a certain gap, and the recording medium 1 and the cartridge 2
By placing the two in a predetermined position, they can rotate without touching each other.

Part of the cartridge 2 is a window so that the turntable 4, optical head 9, and auxiliary magnetic field device 11 can approach the recording medium 1, and this window is opened and closed by a door.

The cartridge 2 is a housing 12 of a disk drive device.
When the cartridge 2 is inserted into the cartridge 2, the door is opened, and the recording medium 1 inside the cartridge 2 is then placed on the turntable 4.

A hub 3 partially made of magnetic material is attached to the center of the recording medium 1, and the recording medium 1 is mechanically moved onto the turntable 4 by the magnetic force of a permanent magnet 5 attached to the turntable 4. are connected to determine their position.

The turntable 4 is integrated with the rotor 6 of the spindle motor, and is supported by the base 25 and base 8 of the spindle motor via a bearing 7.

When the recording medium 1 is loaded on the turntable 4, the objective lens 9a of the optical head 9 is close to the surface of the recording medium 1, with a gap of about 1 mm.

In the controlled state of the first head 9, the distance between the recording medium 1 and the objective lens 9a is kept constant, and the head 9 moves within the recording area.

(Problem to be Solved by the Invention) However, before entering the control state or once leaving the control state, the optical head 90 objective lens 9a or turntable 4 is extremely close to the recording medium 1. There is a risk of contact.

If the optical operating range of the objective lens 9a is designed to be small, that is, the distance between the focal position and the top surface of the objective lens 9a, the risk increases, and if it comes into contact with the recording medium 1, valuable data will be lost. Not only is there a possibility that the optical pick-up head 9 may be lost, but there is also a risk that the optical pick-up head 9 may be fatally damaged.

Therefore, when the cartridge 2 is loaded into the disk drive device, the turntable 4 and the optical pickup head 9 are connected to the recording medium 1 of the cartridge 2.
The object must be approached from a sufficiently distant position in the optical axis direction of the objective lens 9a or in the rotational axis direction of the spindle motor to avoid contact with the turntable 4.

Therefore, in the conventional disk drive device, the cartridge 2 has to move up and down during the loading operation, which requires an excessive amount of space inside the disk drive device.

As a result, the overall size of the device becomes large, making it impossible to apply it as an external storage device for small computers such as reinstallable personal computers.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an information processing device that can reliably load and unload a recording medium without requiring a large space inside the device for vertically moving a cartridge/straight. shall be.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention provides a spindle motor that rotationally drives a disk-shaped recording medium, and an optical pickup that records or reproduces information on the recording medium. and an information processing device comprising a loading mechanism for loading the recording medium onto the turntable of the spindle motor, wherein rotor shafts of the spindles seven to seven are movable in the direction of the rotation axis, and the turntable is attached to the rotor shaft. The present invention is characterized in that the turntable is movable in a direction substantially perpendicular to the surface of the recording medium to be loaded.

It also has a mechanism for moving the disk-shaped recording medium in a direction away from the turntable.

(Function) With the above means, the space required for cartridge loading and unloading operations can be minimized, and the risk of the recording medium coming into contact with various parts of the mechanism can be avoided.

(Example) The present invention will be described below with reference to an example shown in FIGS. 1 to 5.

FIG. 1 shows an optical disk device, and FIG. 2 shows a cartridge.

The optical disc device is equipped with a turntable 4, as shown in FIG.

This turntable 4 is integrally provided at the upper end of the rotor shaft 22. A rotor 6 is provided at the lower end of the rotor shaft 22, and a rotor permanent magnet 21 is provided on the rotor 6.

Further, a chucking magnet 5 is integrated into the upper end of the rotor shaft 22 and positioned within the recess of the turntable 4.

Note that the rotor shaft 22 is supported between the rotary bearing 7 so as to be vertically movable.

In the state shown in FIG. 3(a), the rotor shaft 22 is moved upward in the drawing by the attractive force between the rotor permanent magnet 21 and the rotational drive magnetic circuit 19 including the coil 19a on the stator side, and the rotor permanent magnet 21 and the rotational drive magnetic circuit 19, leaving a certain gap for stability.

A plurality of the driving coils 19a are arranged around the rotor shaft 22.

A plurality of rotor permanent magnets 21 are arranged on the rotor 6 in a state corresponding to the coils 19a. these are,
A plurality of magnets are arranged adjacent to each other so that the directions of magnetization are opposite to each other.

The attractive force between the rotor permanent magnet 21 and the rotational driving magnetic circuit 19 is not due to the current flowing through the coil 19a, but is due to the induced magnetization of the magnetic pole around which the coil 19a is wound by the rotor permanent magnet 21, The attractive force does not have a large effect on the rotational driving force of one magnetic circuit, nor does the rotational driving force have a large effect on the attractive force.

The rotation of the rotor 6 is performed by switching the direction of the current flowing through the coil 19a depending on the rotational position of the rotor 6, similar to a conventional small motor.

Therefore, when removing the recording medium 1 from the turntable 4, the elliptical cam 1 is moved from the state shown in FIG. 3(a).
Rotate 8a and 18b. As a result, the first arms 17g and 17b are pushed down and the end of the rotor 6 is pushed down, as shown in FIG. 3(b). By pushing down the end of the rotor 6, the rotating parts of the spindle motor including the turntable 4 are pushed down against the suction force.

The left and right cams 18a and 18b are simultaneously rotated by a drive mechanism (not shown).

Furthermore, the above-mentioned operation will be explained based on FIG.

The cam 18a from the state shown in FIG. 4(a).

When 18b is rotated, the first arm 17a.

At the same time that 17b is pushed down, the second arms 16a and 16b are pushed up, as shown in FIG. 4(b).

The second arms 16a and 16b are the hub 3 of the recording medium 1.
It is linked to a third arm 14 provided nearby. This third arm 14 contacts outside the information storage area of the recording medium 1 near the hub 3 and pushes the recording medium 1 up inside the cartridge 2. This third arm 14 is movable in the left-right direction in the drawing along guide grooves 16c of the second arms 16a, 16b shown by broken lines in FIG.

FIG. 4(c) shows an intermediate process in which the cartridge 2 is taken out. In this way, the third arm 14 is configured to move integrally with the cartridge 2 and to change the state of contact with the recording medium 1 according to the guide groove 16c. Here, the third arm 14 is completely separated from the recording medium 1 and is in a position where it does not come into contact with the cartridge 2 when it is removed and the door 13 of the cartridge 2 is closed by a mechanism not shown.

Next, the operation of the third arm 14 will be explained based on FIG. 5.

In FIG. 5, the cartridge 2 and the recording medium 1 are indicated by two-dot chain lines.

FIG. 5(b) corresponds to FIG. 4(c), and the door 13 of the cartridge 2 is opened by a mechanism not shown.

The turntable 4 is located at a distance from the recording medium surface,
It never comes into contact with the surface of the recording medium.

When the cartridge 2 is further inserted, cartridge guides 15a, 15 disposed on the left and right sides of the cartridge 2 are inserted.
5b, and the cartridge guides 15a, 15
b also moves together with the cartridge 2. The left and right cartridge guides 15a, 15b and the third arm 14 are rotatably connected to each other by a shaft 24 indicated by a broken line.

Therefore, the third arm 14 is connected to the cartridge guide 15a.
, 15b, but at the same time the second arm 16
It rotates around the shaft 24 according to the guide groove 16c.

When the cartridge 2 is further inserted and the recording medium 1 reaches the area where the optical pickup head 9 is present (FIG. 4(b)), the third arm 14 pushes up the recording medium 1 and removes it from the optical pickup head 9. The recording medium 1 is placed in a spaced apart state.

The cartridge guides 15a and 15b are provided with a coil bar 42.
It is connected to the base 8 via 3a and 23b, and as the cartridge 2 is inserted, it is stretched to generate a restoring force. As shown in FIG. 5(a), after the rotation center of the recording medium 1 is inserted up to the rotation center of the turntable 4, a mechanism (not shown) is used to guide the cartridges 15a and 15.
b is latched and will not return in the opposite direction even if the insertion force is removed. The latch mechanism is interlocked with the cams 18a, 18b as shown in FIG. Descend. Thereafter, the spindle motor is driven to rotate, and the optical pickup head 9 performs recording and reproduction.

To remove the cartridge 2, a mechanism (not shown) rotates the cams 18a and 18b from the outside, releases the latch, and uses the restoring force of the coil spring 23 to remove the cartridge 2.
is discharged to the outside.

Note that the present invention is not limited to the above embodiment,
As shown in FIG. 6, there is a cutout (
A notch portion) 4a may be formed.

The recording medium 1 to which the hub 3 is attached is the turntable 4
With the conventional structure of the turntable 4, the hub portion must climb over the turntable 4, and either the recording medium 1 must be lifted up by the thickness of the hub, or the turntable 4 must be lowered.

However, according to this embodiment, if the recording medium 1 is pushed up inside the cartridge 2 by the third arm 14, the turntable 14 can be moved without the hub coming into contact with it when loading or unloading the recording medium 1. do not have to.

However, in this case, since the third arm 14 must avoid contact with the turntable 4 during loading, an operation to push up the recording medium 1 is required at an early stage. Therefore, the guide groove 16 of the second arm 16
It is necessary to consider the shape of c.

The recording medium 1 passes through the cutout 4a of the turntable 4.
After the center of the recording medium 1 is placed at the rotation center of the spindle motor, the center positioning shaft 20, which is coaxial with the rotation center, is raised by a mechanism not shown and inserted into the center hole of the recording medium 1, and the center is positioned. .

Furthermore, as shown in FIG. 7, if the recording medium 1 has a central axis 26, sufficient positioning can be achieved even without a mechanism for accurately aligning the center position of the recording medium 1 with the rotational axis of the spindle motor. .

[Effects of the Invention] As described above, the present invention enables safe and reliable loading with a simple configuration without moving the cartridge up and down within the device.

Therefore, the components of the device can be arranged within the device extremely efficiently, and the overall size can be reduced.

By using the miniaturized device as a storage medium built into a portable personal computer, etc., it is possible to realize an easily portable virtual computer.

[Brief explanation of drawings]

1 to 5 show one embodiment of the present invention, in which FIG. 1 is a perspective view showing an optical disk device, FIG. 2 is a perspective view showing a cartridge, and FIG. 3(a) is a recording medium. FIG. 3(b) is a cross-sectional view of the recording medium mounted on the turntable, viewed from the insertion direction, FIG. 3(b) is a cross-sectional view of the recording medium separated from the turntable, viewed from the insertion direction, and FIG. 4(a) 4(b) is a cross-sectional view of the recording medium mounted on the turntable when viewed from the side, FIG. 4(b) is a cross-sectional view of the recording medium separated from the turntable, and FIG. 5(a) is a plan view showing the optical disk device; FIG. 5(b) is a plan view showing the cartridge insertion/removal operation with respect to the optical disk device;
FIG. 6(a) is a plan view showing a turntable which is another embodiment of the present invention, FIG. 6(b) is a perspective view thereof, and FIG.
C) is a sectional view thereof, FIG. 7(a) is a partially cutaway perspective view showing a cartridge and a recording medium according to another embodiment of the present invention, FIG. 7(b) is a sectional view thereof, and FIG. The figure is a sectional view showing a conventional example. 1... Disc-shaped storage medium, 2... Cartridge,
4...Turntable, 6...Rotor, 9...Pickup head. Applicant's Representative Patent Attorney Takehiko Suzue (a) (b) (C) Figure (a) (b) (C) Figure No.

Claims (3)

[Claims] (1) Information consisting of a spindle motor that rotationally drives a disk-shaped recording medium, an optical pickup that records or reproduces information on the recording medium, and a loading mechanism that loads the recording medium onto the turntable of the spindle motor. An information processing device, wherein the rotor shaft of the spindle motor is movable in the direction of the rotation axis, and the turntable is movable in a direction substantially perpendicular to the surface of the recording medium to be loaded. . (2) When the recording medium in the cartridge is loaded, the recording medium is moved away from the turntable, and after the recording medium is loaded to a predetermined position, the recording medium is moved toward the turntable. An information processing device characterized by having a moving mechanism. (3) The information processing apparatus according to claim 2, wherein a notch is formed in a contact surface between the turntable and the recording medium.