JP2000235754A - Clamp mechanism dealing with different kinds of disk for disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp mechanism dealing with different kinds of disks for a CD and MD compatible disk device, by which high reliability can be maintained with a simple configuration. SOLUTION: This device is provided with a CD clamping catch 107 which is rotated by the movement of a clamper lever 105 following the movement of a clamper arm 104 toward a compact disk 109, projects and abuts on the edge backside of the clamper insertion hole 109a of the compact disk 109, clamps the compact disk 109 on an MD turntable 102 from both surfaces together with the lower surface of a clamper 108, is rotated in the direction reverse to its previous rotational direction by the movement of a clamping lever 105 following the movement of the clamper arm 104 to a position away from the compact disk 109, and releases the clamping by eliminating the projecting to the recording backside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention shares a compact disk (hereinafter referred to as a CD) which is not contained in a cartridge and a mini disk (hereinafter referred to as an MD) which is contained in a cartridge. The present invention relates to a clamping mechanism for a different kind of disk device.

[0002]

2. Description of the Related Art Conventional disk devices of this type include:
For example, there is one disclosed in JP-A-7-240084.

FIG. 11 is a plan view showing the structure of a conventional disk drive, FIG. 12 is a cross-sectional view of the disk drive with a CD set, FIG. 13 is a cross-sectional view of the disk drive with an MD set, and FIG. 15 is an enlarged view of a main part of FIG. 12, and FIG.
FIG. 14 is an enlarged view of a main part of FIG. 13. In these figures, 1
Is an MD-CD compatible player, 2 is an MD cartridge, 3 is an MD, 3a is an MD3 recording surface, 4 is an MD turntable, 4a is an upper surface of an MD turntable 4,
4b is the lower surface of MD turntable 4, 5 is CD, 5b
Is the recording surface of CD5, 6 is the turntable for CD, 7 is C
D clamper, 8 is a spring, 10 is a chassis, 12
Is a spindle, 13 is a magnetic plate, 14 is a clamp magnet, 15 is a protrusion, 16 is a groove, 17 is a suction magnet, 18 is a pulley, 19 is a belt, 20 is a clamper support plate, and 21 is a shaft.

Next, the operation will be described. In this disk device, the MD turntable 4 and the CD turntable 6 are integrated by the attraction magnet 17 when the MD3 or the CD5 is not set.
In this state, after the CD 5 is placed on the CD turntable 6, the CD clamper 7 is engaged with the groove formed on the upper surface 4 a of the MD turntable 4. To CD turntable 6 and CD5
It is set while being clamped by the D clamper 7.

The MD 3 is set on the CD turntable 6 integrated with the MD turntable 4 due to the mounting force for setting the MD cartridge 2 on the MD turntable 4 and the weight of the MD cartridge 2. Is away from MD turntable 4, MD3 is MD
Is set on the turntable 4 for use. The set recording surfaces of MD3 and CD5 are positioned on the same recording surface.

[0006]

Since the clamping mechanism for a different kind of disk in the conventional disk device is constructed as described above, it is expensive because it uses a large number of magnets. Further, the MD 3 is attached to the MD turntable 4 by the mounting force of the MD cartridge 2 and the weight of the MD cartridge 2 and the urging force of the spring 8.
Is performed, the bearing structure is complicated, and there is a problem that the difference in the mounting force, the own weight of the MD cartridge, the secular change of the urging force of the spring 8, and the like greatly affect the reliability.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a CD-type and MD-compatible disk device which has a simple configuration and can maintain high reliability. An object of the present invention is to obtain a disk-compatible clamping mechanism.

[0008]

According to the present invention, there is provided a clamp mechanism for a different kind of disk in a disk device according to the present invention, wherein a clamper arm of a clamper arm when a turntable fitting part of a disk regulating part is fitted with a disk contact part with a built-in cartridge. Along with the movement in the disk direction, the disk backside pressing member projecting from the backside of the edge of the clamper insertion hole at the center of the disk causes the disk together with the disk surface abutting portion from both sides on the cartridge built-in disk turntable. A disk clamp means for eliminating the protrusion of the disk back surface pressing member to the back surface of the edge of the disk clamper insertion hole as the clamper arm moves away from the disk and releasing the clamp. It is provided with.

The clamp mechanism for a different kind of disk in the disk device according to the present invention is capable of moving in the direction of the disk and to a position away from the disk when the disk restricting portion is fitted with the disk contact portion with the built-in cartridge. A clamper lever connected to a certain clamper arm, and the clamper arm is rotated by the axial movement of the clamper lever in accordance with the movement of the clamper arm in the direction of the disk, and protrudes from the rear surface of the edge of the clamper insertion hole of the disk. And clamps the disk together with the disk surface contact portion from both sides on the cartridge built-in disk turntable, and moves the clamper arm by moving the clamper lever as the clamper arm moves away from the disk. Pivots in the opposite direction to the A CD clamping claw that eliminates the protrusion of the disc from the back surface of the edge of the clamper insertion hole and releases the pressure from the back surface of the edge of the clamper insertion hole, and assists in moving the clamper arm to a position away from the disc. And the biasing means to be provided is provided in the disk clamp means.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 shows a CD and an MD according to this embodiment.
FIG. 4 is a cross-sectional view showing a configuration of a clamp mechanism for a different kind of disk in a compatible disk device. In the figure,
101 is a spindle motor, 102 is a MD turntable (turntable for a disk with a built-in cartridge),
A magnet 103 is fixed to the MD turntable 102.

Reference numeral 104 denotes a clamper arm which moves in the directions of arrows A0 and B0 to clamp and release the CD 109, and reference numeral 105 denotes a clamper lever (disk clamp means). This clamper arm 104
The relationship between the clamper lever 105 and the clamper lever 105 is such that the distal end of the clamper arm 104 clamps the clamper lever 105 from above and below as shown in FIG.

Reference numeral 106 designates the clamper lever 105 with an arrow B
A spring (biasing means) biasing in the 0 direction, 107 is a CD
Clamping claws (disc back surface pressing member, disc clamping means), 107a are rotating shafts which rotatably support CD clamping claws 107, 107b and 107c are C
This is a pin configured on the D-clamp pawl 107. This C
The D-clamp pawl 107 is formed in an S-shape, and is attached to the clamper body by the rotation shaft 107a.

Reference numeral 108 denotes a clamper (disc surface contact portion)
And the CD clamp pawl 107 is
7a rotatably supports. 108a is the tip of the clamper 108 (disc regulating part), 108b is M
A turntable fitting concave portion (turntable fitting portion) that fits with the tip of the D turntable 102 to which the magnet 103 is fixed. Reference numeral 109 denotes a clamped compact disc (disc; hereinafter, referred to as a CD).

Clamper lever 105, spring 106, C
D-clamping pawl 107, rotating shaft 107a, pin 107
b and 107c are formed on a clamper 108, and the clamper 108 is formed on the tip of a clamper lever 105.

FIG. 4 is a three-dimensional configuration diagram showing a configuration of a clamping mechanism for a different kind of disc according to the first embodiment, and FIG.
FIG. 6 is a configuration diagram three-dimensionally showing a clamping mechanism for different kinds of discs located above the center of D109, and FIG.
FIG. 4 is a configuration diagram three-dimensionally showing a state in which is clamped by a clamping mechanism for different kinds of discs.

Next, the operation will be described. (CD Clamping Operation) When the CD 109 is inserted into the disk device, the inserted CD 109 is positioned above the MD turntable 102. Then, the clamper arm 104 moves in the direction of the arrow A0, and performs an operation of pressing the central portion of the CD 109 from above the positioned CD 109 by the clamper 108 provided at the distal end thereof to perform clamping. FIG. 2 is a partial cross-sectional view showing the relationship between the clamper 108, the CD 109, and the MD turntable 102 that has started this clamping operation. At the start of the clamping operation, as shown in FIG. 2, the clamper lever 105 of the clamper 108 is at the moving end position in the direction of arrow B1 by the spring 106. For this reason, the lower L-shaped piece portion 105a of the clamper lever 105 comes into contact with the pin 107b of the CD clamping pawl 107, and rotates the CD clamping pawl 107 in the direction of arrow m about the rotation shaft 107a. Then, the lower protruding end of the CD clamping pawl 107 is drawn into the clamper 108.

In this state, when the clamper 108 further descends, the upper end of the MD turntable 102 to which the magnet 103 is fixed is inserted into a concave portion formed at the center of the tip portion 108a of the clamper 108 as shown in FIG. The upper surface of the upper end abuts against the contact surface in the recess. In this state, the clamper 108 further inserts the CD 109
When the center portion is pressed, the clamper lever 105 moves in the direction of arrow A1, and the lower L
The character piece portion 105a is a pin 107 of the CD clamp claw 107.
c is pressed down, and the CD clamping pawl 107 is
Then, the edge of the clamper insertion hole 109a at the center of the CD 109 is pushed upward from below by the lower protruding end of the CD clamp claw 107. Since the upper surface of the CD 109 is in contact with the lower surface of the clamper 108, the CD 10
Reference numeral 9 denotes an MD turntable 1 by the lower surface of the clamper 108 and the lower protruding end of the CD clamping claw 107.
02 and is brought into the state of FIG.

CD1 clamped in the state shown in FIG.
Reference numeral 09 denotes an L integrated with the clamper lever 105 by the magnet 103 fixed to the MD turntable 102.
The character piece portion 105a is held by being attracted in the direction of the arrow A1, and rotates with the rotation of the MD turntable 102.

(CD Clamp Release Operation) When taking out the CD 109 from the MD turntable 102 from the state shown in FIG. 1, the clamper arm 104 first moves in the direction of arrow B0. With the movement of the clamper arm 104, the clamper lever 105 is moved in the direction of arrow B1 by the spring 106. When the clamper lever 105 moves in the direction of arrow B1, the lower L-shaped piece 105
a is the pin 1 of the CD clamping pawl 107 as shown in FIG.
07b, the CD clamp pawl 107 is rotated in the direction of the arrow m about the rotation shaft 107a, and the lower end of the CD clamp pawl 107 projects from the lower side of the edge of the CD109 clamper insertion hole 109a. Release pressing and press C
The tip 108a of the clamper 108 is detached from the clamper insertion hole 109a at the center of D109.

(Mounting of MD on MD turntable) FIG. 7 is a three-dimensional configuration diagram showing a state in which the MD is mounted on the MD turntable, and FIG. 8 is an MD turntable for the MD. It is sectional drawing which shows the state mounted on top. In these figures, the same or corresponding parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted. 7 and 8, reference numeral 200 denotes an MD (disk with a built-in cartridge), and reference numeral 200a denotes a disk in the cartridge. M
The placement and fixation of the MD 200 on the D turntable 102 are performed by the attraction force of the magnet 103, and the placement and fixation are performed in a conventional manner.

As described above, according to the first embodiment, the MD 200 is mounted on the MD turntable 102 in the same manner as the conventional one,
With respect to 109, there is an effect that a high reliability can be realized with a simple configuration based on the MD turntable 102, and a clamping mechanism for different types of discs that can be shared by CD and MD can be obtained.

Embodiment 2 FIG. FIG. 9 is a partial structural view showing the relationship between the CD clamping pawl and the clamper lever according to the second embodiment, and the other configuration is the same as that of FIG. In FIG. 9, the same or corresponding parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In the figure, reference numeral 205 denotes a clamper lever (disc clamping means) used in place of the clamper lever 105 shown in FIG.
When pressed down in the direction, the upper L-shaped piece 205b
Comes into contact with the pin 107b of the CD clamping claw 107 and is pushed up in the direction of arrow B1, and the lower L-shaped piece 2
05a comes into contact with the pin 107c of the CD clamping pawl 107.

Also in the second embodiment, the same effects as those of the first embodiment can be obtained only by changing the shape of the clamper lever 205 and the engagement relationship between the clamper lever 205 and the CD clamping pawl 107. is there.

Embodiment 3 FIG. FIG. 10 shows the third embodiment.
2 is a partial structural view showing a relationship between a CD clamping claw and a clamper lever, and other configurations are the same as those in FIG. FIG.
In FIG. 0, the same or corresponding parts as those in FIG. 305 in FIG.
A clamper lever (disc clamping means) 307 used in place of the clamper lever 105 shown in FIG.
D-clamp pawl (disc back surface pressing member, disk clamp means), 307a is a rotation axis of CD-clamp pawl 307, 307b is a pin, and when clamper lever 305 is pushed down in the direction of arrow A1, an L-shaped piece on the upper side. When the portion 305b comes into contact with the pin 307b of the CD clamping pawl 307 and is pushed up in the direction of arrow B1, the lower L
The character piece portion 305a contacts the pin 307b.

Also in the third embodiment, the same effects as those of the first embodiment can be obtained except that the shape of the CD clamp 307 and the engagement relationship between the clamper lever 305 and the CD clamp 307 are changed. Things.

[0026]

As described above, according to the present invention, the movement of the clamper arm in the direction of the disk when the turntable fitting portion of the disk regulating portion is fitted with the cartridge built-in disk contact portion. Along with this, the disc is clamped on both sides of the disc together with the disc surface abutting portion on the cartridge built-in disc turntable by the disc back surface pressing member protruding from the edge back surface of the clamper insertion hole in the center of the disc, With the movement of the clamper arm to a position away from the disk, the disk back surface pressing member does not protrude to the back surface of the edge of the disk insertion hole of the disk, and is provided with disk clamp means for releasing the clamp. So
A disk with a built-in cartridge may be mounted on a turntable for a disk with a built-in cartridge as before, and a disk such as a CD can be clamped to the turntable for a disk with a built-in cartridge by the disk clamping means. With such a simple configuration having only a turntable for use, high reliability is maintained, and there is an effect that discs of different types such as CDs and MDs can be set on the turntable for a disc with a built-in cartridge.

According to the present invention, the axial direction of the turntable for the cartridge built-in disc of the clamper lever accompanying the movement of the clamper arm in the disc direction when the disc regulating section is fitted with the cartridge built-in disc contact section. , The disc is projected and abutted against the back surface of the edge of the clamper insertion hole of the disc, and the disc is clamped on both sides of the disc together with the disc surface contact portion on the turntable for the cartridge built-in disc. Due to the movement of the clamper lever accompanying the movement to the position away from the disc, the clamper lever rotates in a direction opposite to the direction in which the disc rotates, eliminating the protrusion of the disc from the rear surface of the edge of the clamper insertion hole, A CD clamping claw for releasing the pressing of the back surface of the edge of the clamper insertion hole; And a biasing means for assisting the movement of the arm to a position away from the disk, so that the disk with a built-in cartridge may be mounted on a turntable for a disk with a built-in cartridge as before, A disc which has not been made can be clamped on the cartridge built-in disc turntable from both sides of the disc by the CD clamp claws and the disc surface abutting portion. With the configuration, high reliability is maintained, and there is an effect that it is possible to set different types of disks such as CDs and MDs on the turntable for a disk with a built-in cartridge.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of a clamp mechanism for different kinds of discs in a CD and MD compatible disc apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a partial cross-sectional view showing a relationship between a clamper, a CD, and an MD turntable that have started a clamping operation in the clamping mechanism for a different kind of disc according to the first embodiment of the present invention.

FIG. 3 is a partial cross-sectional view showing a state where the CD is clamped by the clamp mechanism for a different kind of disc according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram three-dimensionally showing a configuration of a clamp mechanism for different kinds of discs according to Embodiment 1 of the present invention;

FIG. 5 is a configuration diagram three-dimensionally showing a clamp mechanism for a different kind of disc according to the first embodiment of the present invention;

FIG. 6 is a configuration diagram three-dimensionally showing a state in which the CD is clamped by the heterogeneous disk-compatible clamping mechanism according to the first embodiment of the present invention;

FIG. 7 is a configuration diagram three-dimensionally showing a state in which the MD is mounted on the MD turntable in the clamp mechanism for different kinds of discs according to the first embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a state in which the MD is mounted on the MD turntable in the clamp mechanism for a different kind of disc according to the first embodiment of the present invention.

FIG. 9 is a partial structural diagram showing a relationship between a CD clamping claw and a clamper lever of a clamping mechanism for different kinds of disks in the disk device according to the second embodiment of the present invention.

FIG. 10 is a partial structural diagram showing a relationship between a CD clamping claw and a clamper lever of a clamp mechanism for a different kind of disc in the disc apparatus according to Embodiment 3 of the present invention.

FIG. 11 is a plan view showing a configuration of a conventional disk device.

FIG. 12 is a sectional view of a conventional disk device in which a CD is set.

FIG. 13 is a sectional view of a conventional disk drive with an MD set.

FIG. 14 is an enlarged view of a main part of FIG.

FIG. 15 is an enlarged view of a main part of FIG.

[Explanation of symbols]

102 MD turntable (turntable for disk with built-in cartridge), 104 clamper arm,
105, 205, 305 clamper lever (disc clamping means), 106 spring (biasing means), 107,
307 CD clamp claws (disc pressing member, disc clamping means), 108 clamper (disc contact portion), 108a tip of disc (disc regulating portion), 108b turntable fitting recess (turntable fitting portion) , 109 CD (disc), 109
a Clamper insertion hole, 200 MD (disk with built-in cartridge).

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Yuichiro Suzui 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Corporation (72) Inventor Hisashi Morita 2-6-1, Otemachi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Engineering Co., Ltd. (72) Inventor Hiroshi Shirahata 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Kiichiro Muroya 2-6-1 Otemachi, Chiyoda-ku, Tokyo Mitsubishi Electric Engineering Co., Ltd. F-term (reference) 5D038 CA04 CA22 EA09 FA05

Claims (2)

[Claims] 1. A disk whose center is positioned at substantially the same position as the center position of a cartridge built-in disk turntable, moves toward the disk in response to a clamping operation, and moves away from the disk in response to an unclamping operation. A moving clamper arm, a disc surface contact portion that forms a part of a clamper body that contacts a surface of the disc when the clamper arm moves toward the disc, and the clamper arm faces the disc. A turntable fitting portion that fits with the cartridge built-in disk contact portion of the cartridge built-in disk turntable when moved. A disc regulating portion constituting a portion, and a portion in front of the disc regulating portion. With the movement of the clamper arm in the direction of the disk when the turntable fitting portion is fitted with the cartridge built-in disk contact portion, the clamp is inserted into the back surface of the edge of the clamper insertion hole at the center of the disk. By the protruding disc back surface pressing member, the disc is clamped from both sides together with the disc surface contact portion on the cartridge built-in disc turntable,
A disk device having disk clamp means for removing the clamp by eliminating the protrusion of the disk back surface pressing member to the back surface of the edge of the disk insertion hole of the disk as the clamper arm moves away from the disk; Clamp mechanism for different types of discs. 2. The disk clamp means is connected to a clamper arm which is movable in the direction of the disk and can be moved away from the disk when the disk restricting portion is fitted with the disk contact portion of the cartridge. A clamper lever, the clamper arm being rotated by the axial movement of the clamper arm in accordance with the movement of the clamper arm in the direction of the disk, and protruding and abutting against the rear surface of the edge of the clamper insertion hole of the disk; At the same time, the disc is clamped from both sides on the cartridge built-in disc turntable, and the clamper arm is turned in a direction opposite to the rotated direction by the movement of the clamper lever accompanying the movement of the clamper arm to a position away from the disc. To move the disc to the underside of the edge of the clamper insertion hole. A CD clamping claw for eliminating the protrusion and releasing the pressing of the edge rear surface of the clamper insertion hole; and a biasing means for assisting movement of the clamper arm to a position away from the disc. 2. A clamping mechanism for a different kind of disk in the disk device according to claim 1.