JP2002109803A - Loading device for magneto-optical disk recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To a loading device for a magneto-optical disk recording device, capable of securing a sufficiently wide space between an elevating mechanism and a driving unit when a magneto-optical disk is inserted/pulled out without interposing a holding lever constituting the elevating mechanism between a clamper and the driving unit, and securing a space for preventing contact between the holding lever and the magneto-optical disk when the clamper and the magnetic-optical disk are adsorbed on the driving unit and rotated. SOLUTION: An elevating mechanism 10 and a plurality of holding levers 20 constituting the elevating mechanism 10 are disposed on a plane roughly identical to a clamper 2 outward in a radial direction so as to be engaged/ disengaged, a radial opening/closing operation and an up-and-down movement are provided to the holding lever 20 in linkage with the rotation of a clamper base 14. Thus, when a magneto-optical disk DC is inserted/pulled out, a sufficiently wide space is secured between the elevating mechanism 10 and a driving unit DU. When the magneto-optical disk DC is rotated, the holding lever 20 is raised and placed on standby by a guide cam 24, by being separated to the outside of the clamper 2, thereby preventing contact between the holding lever and the magneto-optical disk.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a DVD-ROM, a CD,
The present invention relates to an improvement of a loading device in a magneto-optical disk recording device such as a ROM and a CD mounted on a vehicle.

[0002]

2. Description of the Related Art Conventionally, a magneto-optical disk recording apparatus has been designed in consideration of miniaturization and thinning of this type of apparatus.

In particular, in order to record and reproduce information on a magneto-optical disk using laser light, a magneto-optical disk is inserted and mounted on a drive unit, and the used magneto-optical disk is placed on the drive unit. A loading device that is detached from the device and taken out of the device has been reduced in size and thickness.

As is well known, a loading device inserts an inserted magneto-optical disk between a drive unit and a clamper disposed above and below the drive unit and holds the drive on the drive unit, and lowers the clamper. The drive unit and the clamper clamp and hold the drive unit.
An elevating mechanism for moving the clamper up and down is arranged on the lower surface of the clamper, and a space for inserting a magneto-optical disk is formed between the elevating mechanism and the drive unit.

[0005]

However, there is a design goal to make the loading device smaller and thinner.
The space for inserting the magneto-optical disk has also been reduced to a size close to the limit, and the possibility that the lifting mechanism and the magneto-optical disk or the lifting mechanism and the clamper will come into contact increases.
There have been problems such as damage to the magneto-optical disk due to the contact and malfunction of the clamper.

Accordingly, it is an object of the present invention to provide a mechanism for moving a magneto-optical disk in and out without holding a holding lever constituting a lifting mechanism between a clamper and a driving unit. In addition to securing a sufficiently large space between them, it is necessary to secure a space to avoid contact between the holding lever and the magneto-optical disk when the clamper and the magneto-optical disk are attracted to the drive unit and rotated. It is an object of the present invention to provide a loading device in a magneto-optical disk recording device that can be used.

[0007]

In order to achieve the above object, the present invention has the following technical means. That is, the present invention will be described with reference to the reference numerals in the accompanying drawings corresponding to the embodiments of the present invention. The present invention relates to a magneto-optical disc recording and reproducing information using a laser beam on a magneto-optical disc DC. In the loading device of the apparatus 1, the loading device is housed and held in a storage case of the magneto-optical disk recording device 1, and has a circular first opening 5 formed substantially in the center thereof, and a ceiling around the first opening 5. A chassis 3 having the upper surface of the plate 4 as a support surface, a drive unit DU facing the inside of the first opening 5 and having a suction portion 6 at the center to support the magneto-optical disk DC and being driven to rotate, and directly above the drive unit DU And a disk-shaped clamper 2 having a portion to be attracted 7 in the center of the lower surface and a flange 8 provided on the peripheral edge of the upper surface, and being disengaged from the periphery of the flange 8 of the clamper 2 and moved up and down. And a lifting mechanism 10 arranged on the substantially same plane around the outer periphery of the clamper 2, and the lifting mechanism 10 is equally distributed on the top plate 4 of the chassis 3 on a circumference around the first opening 5. A plurality of locking pins 11 formed, and a plurality of arc-shaped long holes 13 formed at the center thereof and formed with a second opening 12 having substantially the same shape as the first opening 5 and inserted into and locked to the plurality of locking pins 11. An annular clamper base 14 which is equally distributed on a circumference around the second opening 12 and is rotatably supported on a support surface.
A clamper base rotating means for rotating the clamper base 14 in the forward or reverse direction along the plurality of arc-shaped slots 13 by inserting or extracting the magneto-optical disk DC; Locking piece 1 rotatably supported by a plurality of support shafts 15 equally disposed around the second opening 12, and having one end inclined downward and facing inward.
And a plurality of flexible holding levers 20 provided with a cam groove 18 bent in the longitudinal direction for locking the plurality of locking pins 11 at the other end. A plurality of first notches 21 are formed on the periphery of the opening 5, and a plurality of second notches corresponding to the first notch 21 are also formed on the periphery of the second opening 12 of the clamper base 14. 2
2 is formed, and a guide cam 24 that moves upward by rotating one end of the holding lever 20 outward is protruded from a circumferential end of each of the first notches 21. This is a loading device in a magneto-optical disk recording device. According to the above, the lifting mechanism 10 of the loading device
However, when the magneto-optical disk DC is mounted on the drive unit DU, the holding lever inserted obliquely downward from the first notch portion 21 and the second notch portion 22 which are substantially overlapped by the forward rotation of the clamper base 14. Locking piece 16 at one end
Is rotated outward by the guide of the cam groove 18, and the clamper 2 detached from the locking piece 16 descends and moves down the magneto-optical disk DC.
By holding one end of the holding lever 20 detached from the clamper 2 on the drive unit DU supporting the same and riding on the guide cam 24 and waiting upward, a sufficiently wide space during rotation of the magneto-optical disk DC is obtained. To secure the space of the. When the magneto-optical disk DC is removed or inserted, one end of the holding lever 20 is rotated inward by the rotation of the clamper base 14 in the reverse direction, so that the locking piece 16 inclined downward is fitted to the flange of the clamper 2. 8
The locking piece 16 at one end of the holding lever 20 is raised upward with the circumferential end 21a of the first opening 5 moving in the same direction by the further reverse rotation of the clamper base 14 as a fulcrum. By swinging and separating the clamper 2 from the drive unit DU and waiting at an upper position, a sufficiently large space is secured between the lifting mechanism and the drive unit. Accordingly, the elevating mechanism 10 and the plurality of holding levers 20 constituting the elevating mechanism 10 are arranged so as to be disengageable and displaceable radially outward on substantially the same plane as the clamper 2, and are held in association with the rotation of the clamper base 14. By giving the lever 20 an opening / closing operation and a vertical movement in the radial direction, the magneto-optical disk D
At the time of insertion / removal of the C, the clamper 2 is moved upward by engagement with the holding lever 20, and at the time of rotation of the magneto-optical disk DC, the holding lever 20 is disengaged from the outside of the clamper 2 while guiding the magneto-optical disk DC through the guide cam 24. By separating from the surface, a sufficiently large space can be secured between the lifting mechanism 10 and the drive unit DU, and the loading device can be made thinner.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings, FIGS. FIG. 1 is a plan view showing a state where a magneto-optical disk is clamped by a clamper of a loading device in a magneto-optical disk recording apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line BB of FIG. 1, and FIG. FIG. 4 is a sectional view taken along line AA of FIG.
FIG. 5 is a plan view showing a state in which the clamper of the loading device in the magneto-optical disk recording device is opened and the magneto-optical disk is inserted or removed, FIG. 6 is a cross-sectional view taken along the line DD of FIG. 5, and FIG. FIG. 8 is a partial sectional view showing a state where the magneto-optical disk is located between the drive unit and a clamper located immediately above the drive unit;
FIG. 9 is a partial cross-sectional view showing a state in which the magneto-optical disk on the drive unit is clamped by the clamper. FIGS. 10A and 10B show the clamper with the retaining piece of the holding lever by reverse rotation of the clamper base. FIGS. 11A and 11B are operation explanatory diagrams showing a state in which the clamper is moved downward by the locking piece of the holding lever by forward rotation of the clamper base. ,
FIGS. 12A and 12B are operation explanatory diagrams showing a state in which the locking piece of the holding lever detached from the clamper by the forward rotation of the clamper base is guided by the guide cam and moves upward.

As shown in FIG. 1, the magneto-optical disk recording device is designated by the reference numeral 1. This magneto-optical disk recording device 1 records and reproduces information on a magneto-optical disk DC such as a DVD-ROM, a CD-ROM, and a CD mounted on a vehicle by using a laser beam. It is inserted and mounted on the drive unit DU, and the used magneto-optical disk DC is removed from the drive unit DU and taken out, or the magneto-optical disk DC is externally used.
Is automatically mounted on the drive unit DU.

As is well known, the loading device inserts the inserted magneto-optical disk DC between the clamper 2 held by the elevating mechanism 10 directly above the drive unit DU and supports it on the drive unit DU. It is configured to be clamped by the clamper 2 lowered by the lifting mechanism 10.

More specifically, the loading device is housed and held in a storage case (not shown) of the magneto-optical disk recording device 1, and has a circular first opening substantially at the center of a top plate 4 serving as a rectangular support surface in plan view. And a drive unit rotatably driven by a motor (not shown) including a chassis 3 having a U-shaped cross-section and bent to have a U-shaped cross section, and a suction portion 6 at the center for supporting the magneto-optical disk DC facing the first opening 5. DU, a disk-shaped clamper 2 which is disposed immediately above the drive unit DU with a predetermined gap, has a portion to be sucked 7 in the center of the lower surface, and has a flange 8 on the upper peripheral edge, and is disengaged from the flange 8 of the clamper 2. And an elevating mechanism 10 arranged on the substantially same plane on the outer periphery of the clamper 2 so as to move up and down.

Focusing on the lifting mechanism 10, the lifting mechanism 10 includes three locking pins 11 equally arranged on the top plate 4 of the chassis 3 around the first opening 5. When,
A second opening 12 having substantially the same shape as the first opening 5 is formed at the center, and three arc-shaped long holes 13 inserted through and locked to the three locking pins 11 are formed around the second opening 12. An annular clamper base 14 is arranged equally on the circumference of the disk and rotatably supported on the top plate 4, and the clamper base 14 is inserted into the three arc-shaped long holes 1 by inserting or pulling out the magneto-optical disk DC.
The clamper base is pivotably supported by a clamper base rotating means that is driven to rotate in the forward or reverse direction along 3, and three support shafts 15 equally arranged around the second opening 12 of the clamper base 14. A locking piece 16 having one end inclined downward and facing inward is provided, and the other end is provided with a penetrating cam groove 18 bent in the longitudinal direction for locking with three locking pins 11. And a plurality of first notches 21 are formed on the periphery of the first opening 5 of the chassis 3.
The first edge of the second opening 12 of the clamper base 14
Three second notches 22 are formed corresponding to the notches 21, and one end of each of the first notches 21 in the circumferential direction is upwardly moved by one end of the holding lever 20 by an outward turning action. A guide cam 24 is provided to project upward.

Next, the clamper base rotating means includes a drive unit 26 disposed at one corner inside the chassis 3, a toggle lever 28 for operating the drive unit 26 by the operation of inserting the magneto-optical disk DC, and a drive unit 26. 26, it moves in a linear direction along both side walls inside the chassis 3 so as to perform relative movement with each other, and the clamper base 1
4. Arms 29a and 29b protruding left and right from both sides of the outer periphery
And a shifter 30a, 30b for locking the clamper base 14 and imparting a rotating action to the clamper base 14. The symbol GR indicates a guide roller, and the insertion slot IT of the chassis 3
In order to guide the magneto-optical disk DC when inserting or removing the magneto-optical disk DC from the optical disk, the motor is driven forward or reverse.

Next, the operation of the loading device of the present invention will be described. 1 to 4 and 9 show a state where the magneto-optical disk is clamped on the drive unit by a clamper, and FIGS. 5 to 8 show a state where the clamper is detached from the drive unit.

First, when the magneto-optical disk DC is mounted on the drive unit DU for rotation, as shown in FIGS. 1 to 4, FIG. 9 and FIGS. 14 in the forward direction (clockwise), the first cutout portion 21 and the second
The holding lever 20 inserted obliquely downward from the notch 22
The locking piece 16 at one end descends while supporting the clamper 2, and is guided outwardly by the cam groove 18 to rotate outward.

As a result, the clamper 2 which has detached radially outward from the locking piece 16 descends and sits on the drive unit DU, and the attracted portion (metal plate) 7 on the lower surface of the clamper 2 holds the magneto-optical disk DC. When the magneto-optical disk DC attracted by the attracting portion (electromagnet) 6 of the supporting drive unit DU and supported by the drive unit DU is clamped by the clamper 2, one end of the holding lever 20 detached from the clamper 2. The locking piece 16 rides on the guide cam 24 and moves in a direction (upward) away from the magneto-optical disk DC to be in a standby state. In this state, the magneto-optical disk DC is rotationally driven by the drive unit DU.

Next, when ejecting or inserting the magneto-optical disk, the holding lever is rotated in the reverse direction of the clamper base 14 as shown in FIGS. The first notch 21
And is inserted in a state inclined downward from the second notch portion 22, and then rotated inward to be locked on the lower surface of the flange 8 of the clamper 2, and further rotated in the opposite direction by the clamper base 14 in the same direction. Go to

Thus, the locking piece 1 at one end of the holding lever 20 is provided with the circumferential end 21a of the first notch 21 as a fulcrum.
6 upward, and the drive unit DU moves the clamper 2
Is cut off and stands by at an upper position, and a space for extracting or inserting the magneto-optical disk DC is formed immediately above the drive unit DU.

Therefore, according to the loading device configured as described above, the elevating mechanism 10 is disposed so as to be able to be disengaged outward in the radial direction on the substantially same plane as the clamper 2, so that the rotation of the clamper base 14 is possible. Since the opening / closing operation and the vertical movement in the radial direction are performed in cooperation with the holding lever 20, the clamper 2 is moved upward by engagement with the holding lever 20 when the magneto-optical disk DC is inserted or removed. At the time of rotation of the disk DC, the guide cam 2 is released while the holding lever 20 is separated from the outside of the clamper 2.
4 away from the DC surface of the magneto-optical disk,
Since a sufficiently large space can be secured between the lifting mechanism 10 and the drive unit DU, the operation stability when the magneto-optical disk DC is attached and detached is obtained, and the loading device, and hence the magneto-optical disk recording The device can be made thinner.

[0020]

The present invention has the following effects.

As described in detail above, according to the first aspect of the present invention, the elevating mechanism and the plurality of holding levers constituting the elevating mechanism are removably disposed radially outward on substantially the same plane as the clamper. The holding lever is opened and closed in the radial direction and moved up and down in conjunction with the rotation of the clamper base. During rotation of the magneto-optical disk, the holding lever is separated from the surface of the magneto-optical disk via the guide cam while being detached from the outside of the clamper, thereby securing a sufficient space between the lifting mechanism and the drive unit. Therefore, the thickness of the loading device can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state where a magneto-optical disk is clamped by a clamper of a loading device in a magneto-optical disk recording device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line BB of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a front view of FIG. 1;

FIG. 5 is a plan view showing a state where the clamper of the loading device is opened and a magneto-optical disk is inserted or removed.

FIG. 6 is a sectional view taken along line DD of FIG. 5;

FIG. 7 is a sectional view taken along line CC of FIG. 5;

FIG. 8 is a partial cross-sectional view showing a state in which a magneto-optical disk is located between a drive unit and a clamper located immediately above the drive unit.

FIG. 9 is a partial sectional view showing a state where the magneto-optical disk on the drive unit is clamped by a clamper.

FIGS. 10A and 10B are operation explanatory diagrams showing a state in which the clamper is moved upward by the locking piece of the holding lever due to the reverse rotation of the clamper base.

FIGS. 11A and 11B are operation explanatory diagrams showing a state in which the clamper is moved downward by the locking piece of the holding lever by forward rotation of the clamper base.

FIGS. 12A and 12B are operation explanatory diagrams showing a state in which a locking piece of a holding lever detached from a clamper by a forward rotation of a clamper base is guided by a guide cam and moves upward.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magneto-optical disk recording device 2 Clamper 3 Chassis 4 Top plate 5 1st opening 6 Suction part 7 Adsorbed part 8 Flange 10 Elevating mechanism 11 Locking pin 12 2nd opening 13 Arc-shaped long hole 14 Clamper base 15 Support shaft Reference Signs List 16 Locking piece 18 Cam groove 20 Holding lever 21 First notch 21a Circumferential end of first opening 22 Second notch 24 Guide cam 26 Drive unit 28 Toggle lever 29a, 29b Arm 30a, 30b Shifter DC magneto-optical disk DU drive unit GR guide roller IT insertion slot

Claims (1)

[Claims] 1. A loading device in a magneto-optical disk recording device 1 for recording and reproducing information on a magneto-optical disk DC by using a laser beam, wherein the loading device accommodates the magneto-optical disk recording device 1. A chassis 3 housed and held in a case, having a circular first opening 5 formed substantially at the center, and having a top surface 4 around the first opening 5 serving as a support surface, and a light facing the first opening 5 A drive unit DU having a suction part 6 at the center for supporting the magnetic disk DC and driven to rotate, and a drive unit DU disposed at a predetermined gap directly above the drive unit DU and having a part to be sucked 7 at the center of the lower surface and a flange 8 at the periphery of the upper surface. Disk-shaped clamper 2 provided
And an elevating mechanism 10 disposed on substantially the same plane around the outer periphery of the clamper 2 so as to be disengaged from the periphery of the flange 8 of the clamper 2 and moved up and down. The elevating mechanism 10 comprises a top plate 4 of the chassis 3. The first
A plurality of locking pins 11 equally arranged on a circumference centered on the opening 5 and a second opening 12 having the same shape as the first opening 5 is formed at the center. A plurality of circular arc-shaped long holes 13 which are inserted through and locked in a circle are equally arranged on the circumference around the second opening 12 and are rotatably supported on a support surface. Magnetic disk D
C clamper base rotating means for rotating the clamper base 14 in the forward or reverse direction along the plurality of arc-shaped long holes 13 by the insertion or withdrawal action of C, and the second opening 12 of the clamper base 14 A locking piece 16 is rotatably supported by a plurality of support shafts 15 equally arranged in the periphery, one end of which is inclined downward and is directed inward, and the other end is locked by the plurality of locking pins 11. A plurality of flexible holding levers 20 provided with cam grooves 18 bent in the longitudinal direction, and a plurality of first notches 21 are formed around the first opening 5 of the chassis. In addition, a plurality of second notches 22 are formed on the periphery of the second opening 12 of the clamper base 14 in correspondence with the first notches 21, and circumferential ends of each of the first notches 21 are formed. Part of the holding lever 20 by turning it outward. A loading device in a magneto-optical disk recording device, wherein a guide cam 24 that moves upwardly is protruded.