JP2003016711A - Optical disk unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical disk unit which mechanically discriminates an optical disk with a diameter of 8 cm and an optical disk with a diameter of 12 cm so as to carry out recording or playback in the optical disk unit provided with a mechanism to load an optical disk inserted from the optical disk loading slot of the upper surface of a casing downward. SOLUTION: The optical disk unit includes the casing having the loading slot of the optical disk on the upper surface, a transportation part to transport the optical disk inserted in the casing from the loading slot in a vertical direction, and a recording/playing-back part to carry out the recording/playing-back of the optical disk transported in the transportation part. The transportation part is provided with a discrimination part which is provided in the casing near the loading slot to discriminate the disk diameter of the optical disk, a disk holder to lock the optical disk, a drive part to drive a disk holder upward and downward, and a turning part which turns the disk holder so as to lock the optical disk according to the disk diameter discriminated by the discrimination part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device, and more particularly to an optical disk device provided with a mechanism for discriminating the diameters of optical disks having different diameters and mounting the discs on an optical disk recording / reproducing means.

[0002]

2. Description of the Related Art In a conventional optical disc apparatus, a disc passage detection switch such as a photodetector is provided in a housing near an optical disc insertion opening as means for discriminating the diameter of an optical disc to be loaded, and the optical disc starts to pass. And the end of passage is measured to determine the size of the diameter of the optical disc, for example, Japanese Patent Laid-Open No. 2001-56
Some are disclosed in Japanese Patent Publication No. 994.

[0003]

In the above-mentioned optical disk device, the size of the diameter of the optical disk is determined in order to determine the size of the diameter of the optical disk and attach the recording / reproducing means for recording and reading the information. An electronic circuit such as a detection unit, a roller for conveying the optical disc, and a control unit for controlling the operation time of the roller depending on the diameter of the optical disc is required, and the configuration becomes complicated. In the present invention,
An object of the present invention is to obtain an optical disk device capable of recording and reading information by discriminating the diameter of an optical disk with a simple mechanical structure.

[0004]

Therefore, according to the optical disk device of the first aspect of the present invention, there is provided a housing having an optical disk insertion opening on the upper surface and an optical disk inserted into the housing through the insertion opening. A transport unit that transports vertically.
An optical disc device having a recording / reproducing unit for recording or reproducing the optical disc conveyed by the conveying unit, wherein the conveying unit is provided in the housing near the insertion opening and is for discriminating a disc diameter of the optical disc. A disc holder for locking the optical disc, a drive unit for driving the disc holder up and down, and a rotating unit for rotating the disc holder so as to lock the optical disc according to the disc diameter discriminated by the discriminating unit. It is characterized by having.

According to a second aspect of the present invention, in the optical disc apparatus according to the first aspect, the discriminating portions are provided in pairs on the left and right upper portions of the disc holder, and the discriminating portion has a pair of diameters. A slide cam that is pushed out when a large-diameter optical disc is inserted after passing through a small optical disc, and a locking portion that locks the large-diameter optical disc of the disc holder in conjunction with the pushed-out slide cam. It is characterized by having a guide mechanism for rotating it.

[0006] According to a third aspect of the present invention, in the optical disc apparatus according to the first aspect, the disc holder has a first projection portion pivotally supported at a lower end portion thereof. A second protrusion provided on an upper end portion that is inserted into the guide mechanism, a first locking portion that locks an outer peripheral lower portion of an optical disc having a small diameter, and an outer peripheral lower portion of an optical disc having a large diameter. It is characterized by having a second locking portion.

According to a fourth aspect of the present invention, in the optical disc apparatus according to the third aspect, the disc holder has a center of the optical disc locked by the first locking portion, The first locking part and the second locking part are provided at positions where the centers of the optical disks locked by the second locking parts are substantially coaxial.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an external perspective view of an embodiment of an optical disk device of the present invention. In FIG. 1, the optical disc apparatus 1 includes an optical disc insertion slot 5 into which an optical disc 4 is inserted on an upper surface 3 of a housing 2.

On the front surface 6 of the optical disk device 1, there is a window 7 through which the mounted optical disk can be visually recognized, and a display section 8 and operation buttons 9 are arranged below the window 7.

FIG. 2 is a schematic block diagram of a carrier unit (hereinafter referred to as a disc loading mechanism) 10 used in the optical disc apparatus 1 of this embodiment. In FIG. 2, the housing 2
The left and right inner side surfaces are provided with guide grooves 101 provided in an inverted J shape in the vertical direction, and plate guides 102 on both sides of the guide groove 101 for guiding a plate 106 described later so as to be vertically slidable.

A slide cam guide groove 10 which guides a slide cam 107, which will be described later, to the left and right of the inner front and rear surfaces of the housing 2 in the vicinity of the optical disk insertion slot 5 so as to be slidable left and right.
3 is provided.

The disc holder 105 locks the lower outer periphery of the optical disc inserted from the optical disc insertion slot 5,
The drive unit drives the disc holder 105 up and down. The disc holder 105 has a substantially H-shape, and has protrusions 104a at the upper ends of the left and right side surfaces and a protrusion 10 at the lower end.
4b, which is loosely inserted into the guide groove 101 and slides along the guide groove 101. Then, a locking portion 105a for locking an optical disc having a small diameter on the front surface of the central portion of the H shape.
Is a locking portion 1 for locking an optical disc having a large diameter on the rear surface.
05b is provided.

Plates 106 having a U-shaped cross section are attached to the left and right side surfaces of the disc holder 105.

In the plate 106, a hole 106a for axially supporting the protrusion 104b and the protrusion 104a are loosely inserted so that the protrusion 1
04b circular arc-shaped elliptic hole 106 rotatable back and forth
b and a rack gear 106c extending in the vertical direction are provided.

Further, the opposite side surfaces 1 of the plate 106 are opposed to each other.
06d is guided by the plate guide 102 and slides up and down.

Protrusions 104c which can be inserted into the oval holes 107a of the slide cam 107 are provided near the left and right ends of the upper surface of the disc holder 105.

The slide cam 107 is a discriminating portion for discriminating the disc diameter. The slide cam 107 is loosely inserted in the slide cam guide groove 103 and slidable right and left, and is an elliptical hole 107a provided in a direction approximately 45 degrees with respect to the sliding direction. A slide portion 107b having
It has a contact portion 107c with which the outer peripheral surface of the optical disc 4b having a diameter of 12 cm contacts. The distance between the left and right of the contact portion 107c is
It has an interval of, for example, about 10 cm, which contacts the optical disk 4b having a diameter of 12 cm and does not contact the optical disk 4a having a diameter of 8 cm.

Then, the slide cam 107 is biased by the spring 108 inserted between the housing 2 and the slide cam 107, and abuts against the stopper 103a of the slide cam guide groove 103.

The slide cam 107 is the stopper 103a.
The projection 104c of the disc holder 105 can be inserted into the oval hole 107a when the disk holder 105 is in contact with the disk holder 105.

A loading motor 109 for vertically driving the disk holder 105 is fixed to the housing 2, and a loading gear 110 meshes with a rack gear 106c provided on the plate 106.

A support portion (not shown) for rotatably supporting a clamper 111 for holding the periphery of the center hole of the optical disk is provided from the inside of the front surface of the housing 2 toward the disk loading mechanism 10.

The traverse mechanism 113 includes a turntable 112, a motor for rotating the turntable 112, and an optical pickup. The traverse mechanism 113 has protrusions 113a serving as fulcrums on both lower side surfaces, and rotates about the protrusion 113a. .

When information is recorded on or read from the optical disc, the traverse mechanism 113 is rotated in the direction of the clamper 111 to insert the protrusion of the turntable 112 into the center hole of the optical disc to hold the center.
The optical disk is clamped and rotated between the turntable 112 and the clamper 111.

The disc holder 105 will be described with reference to FIGS. FIG. 3 shows a disc holder 10
5 is an external perspective view of FIG. 5, FIG. 4 is a front view and a top view of the disc holder 105 that holds the optical disc 4a having a diameter of 8 cm, and a vertical sectional view. FIG. 5 is a rear view of the disc holder 105 that holds the optical disc 4b having a diameter of 12 cm. FIG.

In FIGS. 3 to 5, the disc holder 105 has a pair of left and right arcuate locking portions 105a which lock the front surface of the disk holder 105 in an inclined state with respect to the disk holder 105.
And a pair of left and right arcuate locking portions 105b that lock substantially perpendicularly to the rear surface.

When the optical discs 4a and 4b are placed on the respective locking portions, the locking portions 105a and 105b are
The center holes of the optical disks 4a and 4b are the disk holders 10.
The optical disk 4a and the optical disk 4b are located above the optical disk 5 and are substantially coaxial with each other.

The disc holder 105 is provided with protrusions 104a on the upper ends of both left and right sides and a protrusion 104b on the lower end. The protrusions 104a are inserted through the elliptical holes 106b and loosely inserted into the guide groove 101 to be guided. , The protrusion 104b is
It is inserted through the hole 106a and loosely inserted into the guide groove 101 to be guided.

When the disc holder 105 is lifted while the optical disc 4b is placed on the locking portion 105b, the protrusion 104c is long just before the outer peripheral portion of the optical disc 4b comes into contact with the contact portion 107c of the slide cam 107. Circular hole 1
It has a length to be inserted through 07a.

Next, the operation of this embodiment will be described. FIG. 6 shows that the optical disk 4 a has an insertion opening 5 on the upper surface 3 of the housing 2.
It is a figure which shows the state when it is inserted from. When the disc is inserted, the disc holder 105 moves to a raised position near the insertion port 5 and stops.

At this time, since the distance between the left and right slide cams 107 is longer than the diameter of the optical disc 4a, the slide cams 107 are not spread by the outer peripheral portion of the optical disc 4a. Therefore, the slide cam 107 is the stopper 1
03a, and the protrusion 104c is inserted into the oval hole 107a.

Further, the protrusion 104a has a guide groove 101a.
Be guided by. Therefore, the disc holder 105 is tilted to the rear surface, and the optical disc 4a that is tilted and mounted on the locking portion 105a is locked substantially vertically.

When the operation unit 8 is operated to instruct recording or reproduction, a control signal (not shown) is output from the control unit to rotate the loading motor 109. The plate 1 including the rack gear 106 that meshes with the loading gear 110 that is rotated by the rotation of the loading motor 109
06 starts descending together with the disc holder 105.
The optical disc 4a starts to descend while being locked by the disc holder 105, and as shown in FIG.
It stops at a position where the protrusion of the turntable 112 can be inserted into the center hole of the.

After stopping the loading motor 109, FIG.
As shown in FIG.
The optical disc 4 is rotated between the turntable 112 and the clamper 111 by rotating the optical disc 4a in the direction of 1 and inserting the protruding portion of the turntable 112 into the central hole of the optical disc 4a and holding the center.
Hold a.

When the optical disc 4a is clamped, the disc holder 105 moves down to the avoiding position so as not to hinder the rotation of the optical disc 4a, and the traverse mechanism 113 performs the operation of recording information on the optical disc 4a and reading the information. .

When the operation of recording or reading information on the optical disc 4a is completed and the eject button of the optical disc 4a is operated, the optical disc 4a protrudes from the insertion slot 5 by operating in the reverse order of the above-mentioned operation, and You can easily take it out with.

Next, the operation when the optical disc 4b is inserted from the insertion port 5 of the upper surface 3 of the housing 2 will be described with reference to FIGS. FIG. 9 is a diagram showing a state when the optical disc 4b is inserted from the insertion port 5 of the housing 2.
When the disc is inserted, the disc holder 105 moves to a position near the insertion slot 5 and stops.

When the optical disk 4b is inserted, the slide cams 107 provided on the upper left and right ends of the disk holder 105.
Is pushed open, and the protrusion 104c inserted into the oval hole 107a moves to the front side. Therefore, the tilted disc holder 105 is rotated and positioned substantially vertically,
The optical disc 4b is locked by the locking portion 105b. At this time, the protrusion 104a is at the upper end of the guide groove 101,
Guide groove 1 for the optical disk 4b along the guide groove 101
Move to 01b side.

When the operation unit 8 is operated to instruct recording or reproduction, a control signal is output from a control unit (not shown) and the loading motor 109 is rotated. The plate 1 including the rack gear 106 that meshes with the loading gear 110 that is rotated by the rotation of the loading motor 109
06 starts descending together with the disc holder 105.
The optical disc 4b starts descending while being locked by the disc holder 105, and as shown in FIG.
It stops at the position where the protrusion of the turntable 112 can be inserted into the center hole of b.

At this time, the slide cam 107 pushed out by the optical disk 4b is urged by the spring 108, and the stopper portion 103a of the guide groove 103 is formed.
Abut.

After the disc holder 105 is stopped, FIG.
As shown in FIG.
The optical disk 4b is rotated between the turntable 112 and the clamper 111 by rotating the optical disk 4b in the direction of 1 and inserting the protrusion of the turntable 112 into the center hole of the optical disk 4b to hold the center.
Hold b.

When the optical disc 4b is sandwiched, the disc holder 105 is lowered to the avoiding position so as not to hinder the rotation of the optical disc 4b, and the traverse mechanism 113 performs the operation of recording information on the optical disc 4b and reading the information. .

When the operation of recording information on the optical disc 4b or reading the information is completed and the eject button of the optical disc 4b is operated, the optical disc 4b projects from the insertion slot 5 by operating in the reverse order of the above operation. , You can easily remove it by hand.

When the optical disk 4b is taken out, the slide cam 107 moves toward the center by the urging force of the spring 108. Since the projection 104c moves to the rear surface side of the housing 2 by the movement of the slide cam 107, the disk holder 105 pivots and tilts toward the rear surface with the projection 104b as a fulcrum, and the projection 104a extends into the guide groove 101a. Move to the side.

As described above, when the optical disk 4a is inserted through the insertion slot 5, the disk holder 105
Is tilted to the rear side of the housing 2 and the optical disk 4a is locked to the locking portion 105a on the front surface of the disk holder 105, and when the optical disk 4b is inserted from the insertion slot 5, the disk holder 105 rotates to the front side. Then, the optical disc 4b becomes substantially vertical, the optical disc 4b is locked by the locking portion 105b on the rear surface of the disc holder 105, and the optical disc 4b is transported to the traverse mechanism 113 by the loading mechanism 10.

[0045]

According to the present invention, it is possible to obtain an optical disk device capable of recording information and reading information by discriminating the diameter of an optical disk with a simple mechanical structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external appearance of an embodiment of an optical disc device of the present invention.

FIG. 2 is a schematic configuration diagram showing a loading mechanism of an embodiment of the present invention.

FIG. 3 is an external perspective view showing a disc holder according to an embodiment of the present invention.

FIG. 4 is a front view, a top view, and a side view showing a front side of a disc holder according to an embodiment of the present invention.

FIG. 5 is a rear view and a side view showing a rear surface side of a disc holder according to an embodiment of the present invention.

6 is a schematic configuration diagram showing a state where an 8 cm optical disc is locked in the disc holder of the loading mechanism of FIG.

FIG. 7 is a diagram showing the loading mechanism of FIG.
It is a schematic block diagram which shows the state at the time of pinching an optical disk of cm.

FIG. 8 is a traverse mechanism with the loading mechanism of FIG.
It is a schematic block diagram which shows the state which clamped the optical disk of cm.

9 is a schematic configuration diagram showing a state where a 12 cm optical disc is locked in the disc holder of the loading mechanism of FIG.

10 is a schematic configuration diagram showing a state when the traverse mechanism holds an optical disc of 12 cm by the loading mechanism of FIG.

11 is a schematic configuration diagram showing a state in which the traverse mechanism holds an optical disc of 12 cm by the loading mechanism of FIG. 2. FIG.

[Explanation of symbols]

1 optical disk device 2 housing 3 upper surface 4 optical disk 4a 8 cm optical disk 4b 12 cm optical disk 5 insertion slot 6 front surface 7 window 8 display section 9 operation button 10 loading mechanism 101 guide groove 101a guide groove 101b guide groove 102 plate guide 103 slide cam guide Groove 103a Stopper 104a Projection 104b Projection 104c Projection 105 Disk holder 105a Locking part 105b Locking part 106 Plate 106a Hole 106b Oval hole 106c Rack gear 106d Both sides 107 Slide cam 107a Oval hole 107b Sliding part 107c Contact part 108 Spring 109 Loading motor 110 Loading gear 111 Clamper 112 Turntable 113 Traverse mechanism 113a Projection

Claims (4)

[Claims] 1. A housing having an optical disk insertion opening on an upper surface thereof, a transportation section for vertically transporting the optical disk inserted into the housing through the insertion opening, and an optical disk transported by the transportation section. An optical disc apparatus having a recording / reproducing unit for reproducing, wherein the transporting unit is provided in the housing near the insertion opening and discriminating a disc diameter of the optical disc; a disc holder for locking the optical disc; An optical disc apparatus comprising: a drive unit that drives the disc holder up and down; and a rotating unit that rotates the disc holder so as to lock the optical disc according to the disc diameter discriminated by the discriminating unit. 2. The optical disc device according to claim 1, wherein the discriminating portions are provided in pairs on the left and right upper portions of the disc holder and are pushed when an optical disc having a large diameter is inserted and an optical disc having a large diameter is inserted. An optical disc comprising: a slide cam that can be expanded, and a guide mechanism that interlocks with the slide cam that has been expanded to rotate a locking portion that locks an optical disk with a large diameter of the disk holder to the insertion slot. apparatus. 3. The optical disc device according to claim 1, wherein the disc holder has a first protrusion rotatably supported at a lower end and an upper end that is inserted into the guide mechanism. And a second locking portion that locks a lower peripheral portion of an optical disc having a small diameter, and a second locking portion that locks a lower peripheral portion of an optical disc having a large diameter. Optical disk device. 4. The optical disk device according to claim 3, wherein the disk holder includes an optical disk center locked to the first locking portion and an optical disk locked to the second locking portion. An optical disk device, wherein the first locking portion and the second locking portion are provided at positions where the centers are substantially coaxial.