JPH11102562A - Disk clamping mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a disk to be chucked almost in the vertical attitude to a turntable using a disk clamper. SOLUTION: When a disk clamper 34 being hanged in the state of being fitted to a circular hole 31a formed in a clamper holding member 31 with a play while being opposed to a turntable 22 is separated from the turntable 22, a regulating member 35 is placed in contact with the disk clamper 34 under the condition that the regulating member 35 is positioned to the clamper holding member 31 so that the center of disk clamper 34 almost matches with the center of turntable 22. Meanwhile, when the disk clamper 34 and turntable 22 are set closely with each other and the disk clamper absorbes the turntable via the disk, the regulating member 35 is drawn back from the disk clamper 34.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk clamp mechanism capable of reliably chucking a disk on a turntable in a substantially vertical posture using a disk clamper.

[0002]

2. Description of the Related Art There are various types of disk devices in which a disk can be used in a substantially vertical posture. For example, a large number of compact disks (CDs) are mounted almost radially upright on a rotatable rotary table. Then, one of the selected compact discs is mounted on the turntable of the disc drive unit in a substantially vertical posture, or a compact disc for computer (CD-ROM) mounted on a substantially vertical tray is used as the turntable. Some are mounted in a substantially vertical position.

A conventional disk clamp mechanism applied to this type of disk drive will be described with reference to FIGS. 20A to 20C are a top view, a front view, and a side view showing a disk device to which the conventional disk clamp mechanism is applied, and FIG. 21 is a side view showing the conventional disk clamp mechanism in an enlarged manner. (A) shows the state before the disk is chucked on the turntable, and (B)
FIG. 4 is a view showing a state where the disc is chucked to the turntable.

As shown in FIGS. 20A to 20C, a disk drive 10 to which a conventional disk clamp mechanism is applied.
At 0, a chassis 101 serving as a base is provided substantially perpendicular to an installation surface, and a motor 103 having a turntable 102 fixed to substantially the center of the chassis 101 is mounted at right angles to the chassis 101. . Therefore, the disc D is placed on the turntable 10 in a substantially vertical posture.
2 to be rotatably supported.

On the right side of the chassis 101, a clamper holding arm 104 is provided rotatably about a rotation shaft 106 while being urged toward the turntable 102 by a spring 105. Here, one end of the clamper holding arm 104 extends to the turntable 102 side, and the disk clamper 107 is suspended in a round hole 104a formed in one end side of the clamper holding arm 104 in a loosely fitted state. . The disk clamper 107 is provided so as to be able to freely contact and separate from the turntable 102 by rotating the clamper holding arm 104 clockwise or counterclockwise while facing the turntable 102.

On the side of the turntable 102, an optical pickup 108 is provided movably in the radial direction of the disk D.

Then, the disk D is inserted into the turntable 10
When chucking in a posture substantially perpendicular to FIG.
As shown in (A), after inserting the disk D between the turntable 102 and the disk clamper 107 and fitting the center hole H of the disk D to the chucking boss 102a of the turntable 102, By adsorbing the disk clamper 107 to the turntable 102 via the disk D, the disk D is chucked to the turntable 102 as shown in FIG. In this chucking state, the turntable 102
The magnet 102b fixed in the central concave portion of the chucking boss 102a and the magnetic plate 107a fixed to the central convex portion of the disk clamper 107 attract each other, so that the magnet 102b is loosely inserted into the round hole 104a of the clamper holding arm 104. The fitted disc clamper 107 can rotate integrally with the turntable 102 via the disc D.

[0008]

By the way, in the conventional disk clamping mechanism 100 having the above structure, when the disk D is chucked in a posture substantially perpendicular to the turntable 102, as shown in FIG. Although the disc clamper 107 suspended from one end of the clamper holding arm 104 in a loosely fitted state faces the turntable 102 and is separated from the turntable 102, the disc clamper 107 is separated from the turntable 102 by its own weight. The inside of the round hole 104a formed on one end side moves in the direction of gravity. As a result, the center of the disc clamper 107 is shifted downward by the dimension A with respect to the center of the turntable 102 and the center hole H of the disc D, and the disc clamper 107 is attracted to the turntable 102 via the disc D. When you do, disk D
May not be reliably chucked to the turntable 102. In such a case, the disk D rotating at a high speed jumps out of the turntable 102 during rotation,
Alternatively, even if the disk D does not protrude from the turntable 102, a problem such as generation of vibration due to an eccentric load of the disk clamper 107 eccentrically adsorbed to the turntable 102 may occur.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is provided with a turntable provided on a disk drive unit for rotatably supporting a disk in a substantially vertical posture. A disk clamper which is opposed to the turntable while facing, and which is suspended in a state of being loosely fitted in a hole formed in the clamper holding member; and A regulating member that regulates movement of the clamper in the direction of gravity, and a means for adsorbing the disc clamper to the turntable via the disc, when the disc clamper is separated from the turntable. Holding the restricting member so that the center of the disk clamper and the center of the turntable substantially coincide with each other. The restricting member is brought into contact with the disc clamper in a state where the disc clamper is positioned with respect to the material, while the disc clamper and the turntable are brought closer to each other to move the disc clamper to the turntable via the disc. The disc clamping mechanism is characterized in that when sucked, the regulating member is retracted from the disc clamper.

[0010] The disk clamping mechanism of the present invention may further comprise a disk accommodating portion accommodating a plurality of disks in a substantially vertical posture, and a disk selected from the plurality of disks accommodating the disk accommodating portion. A disk transport unit for loading a turntable of a disk drive unit; and when the disk clamper is attracted to the turntable via the disk, the regulating member moves the regulating member in conjunction with the disk transport unit.
It is characterized by being evacuated from the clamper.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a disk clamping mechanism according to the present invention will be described below in detail with reference to FIGS.

FIG. 1 is a perspective view for explaining an automatic disk selecting apparatus employing a disk clamping mechanism according to the present invention, and FIG. 2 is a first and a second light detecting plate formed on the rotary table shown in FIG. FIG. 3 is an enlarged plan view showing the first to third optical sensors, FIG. 3 is a diagram showing output waveforms of the first to third optical sensors shown in FIG. 2, and FIG. 4 is a rotary diagram shown in FIG. FIGS. 5A and 5B are a top view and a front view for explaining a disk clamping mechanism according to the present invention.

Before explaining the disk clamping mechanism according to the present invention, an automatic disk selecting apparatus to which the disk clamping mechanism is applied will be described with reference to FIG.

In the automatic disk selecting apparatus 1 shown in FIG. 1, a center shaft 3 is fixedly mounted on a chassis base 2 serving as a base, and a center of a large-diameter rotary table 4 serving as a disk storage portion is mounted on the center shaft 3. The rotary table 4 is provided so as to be rotatable clockwise and counterclockwise about the central axis 3 by fitting the hole 4a. At this time, the diameter of the rotary table 4 is about 340 mm.

The rotary table 4 has an upper surface 4b.
A plurality of disk mounting slits 4d penetrate a part of the lower surface 4c from the side and are arranged at substantially equal intervals along the circumference and at the outer peripheral portion 4e.
It is formed radially toward. At this time, the plurality of disk mounting slits 4d can be formed in a large number (about 200) by narrowing the interval (pitch) between the adjacent disk mounting slits 4d without increasing the outer diameter of the rotary table 4 so much. It is formed radially so that the disk D can be placed. Further, a plurality of disk mounting slits 4
As shown in FIG. 4, a 12 cm diameter C
D (compact disc) or 8 cm diameter CD (compact disc) can be mixed and placed. Further, the plurality of disk mounting slits 4d are connected to a second arm 13 described later.
The two ends of the central opening into which are inserted are closed in an arc shape, and the discs D are positioned at substantially equal intervals along the circumference and the outer periphery of the rotary table while securely positioning the outer periphery of the 12 cm CD or 8 cm CD at this arc portion. It is placed in a state of being substantially upright radially toward 4e.

The outer peripheral portion 4e of the rotary table 4
, And a gear portion 4f is formed along the circumference below the outer peripheral portion 4e, and the small tooth portion 5a of the spur gear 5 always meshes with the gear portion 4f, The large tooth portion 5b integrated with the small tooth portion 5a is connected to a motor 7 via a speed reduction mechanism 6 composed of a gear train (not shown).

On the lower surface 4c side of the rotary table 4, on the inner peripheral side of the disk mounting slit 4d,
The second light detection plates 4g and 4h are integrally formed coaxially with the center axis 3 in a ring shape and downward.

The first light detecting plate 4g is formed on the outer peripheral side with respect to the second light detecting plate 4h formed on the inner peripheral side, and as shown in FIG. A plurality of concave / convex portions 4g ₁ and 4g ₂ are formed repeatedly at regular intervals along the ring-shaped circumference in correspondence with the number of the disk mounting slits 4d. On the other hand, the second light detection plate 4h
As shown in FIG. 2, a pair of concave and convex portions 4 are formed within an angular range divided at a predetermined angle (30 °) along the ring-shaped circumference.
h ₁ , 4h ₂ are formed respectively, and each pair of uneven portions 4
h ₁ and 4h ₂ are formed as shown in the drawing, with the lengths being sequentially changed in the order of division.

Further, one disk D (hereinafter, referred to as a desired disk D) selected by inputting a disk number from among a large number of disks D placed on the rotary table 4 is used as a disk drive unit 20 to be described later. In the vicinity of the take-out position to be taken out to the side, the first and second light sensors 8 and 9 are installed on the chassis base 2 at slightly shifted positions, facing the first light detection plate 4g formed on the rotary table 4. and,
A third optical sensor 10 is provided so as to face the second light detection plate 4h formed on the rotary table 4.

Then, as shown in FIGS. 3A to 3C, when the rotary table 4 is rotated, the output of the first optical sensor 8 corresponds to the number of the disk mounting slits 4d. It is provided with a function of calculating a relative positional relationship between a standby position where a desired disk D is output at equal intervals and a take-out position where the desired disk D is taken out. Also, the output of the second optical sensor 9 is approximately 90 times the output of the first optical sensor 8.
(4) A function of pulling out a desired disk D so as to be surely stopped at an extraction position, which is output with the phase shifted. Further, the output of the third optical sensor 10 has a function of indicating the absolute addresses of many disks D in combination with the output of the first optical sensor 8 described above.

Next, a disk guide 11 is provided at a position above the rotary table 4 where a desired disk D is to be taken out toward the disk drive unit 20. The lower end of the disk guide 11 is placed on the chassis base 2 And the upper end thereof is attached to the loading base 15. Then, the disc guide 11 reaches the ejection position on the rotary table 4 for the disc D.
Has been guided.

In the vicinity of the position where the desired disk D is to be taken out, first to third arms 12 to 14 serving as a disk transport means for taking out the desired disk D to a disk drive unit 20 described later are provided on the chassis base 2. And is rotatably provided on a loading base 15 which is provided vertically. At this time, the first and third arms 12 and 14 are supported by rotating shafts 16 and 18 fixed to the loading base 15, respectively. On the other hand, the second arm 13 is supported by a rotation shaft 17 on a slide plate 19 provided on the loading base 15 so as to be slidable in the radial direction of the rotary table 4. The first and second arms 12 and 13 are connected to a cam mechanism (not shown) via a link.
Is connected via a clutch mechanism (not shown) using a rod to a rotation base 25 (FIG. 5) for rotating the disk drive unit 20 described later.

That is, as shown in an enlarged manner in FIG. 4, the first arm 12 is rotatable via the rotary shaft 16 to the right of the desired disk D which has reached the take-out position on the rotary table 4. The desired disk D provided and reached the unloading position
Is supported on the right side of the outer periphery.

The second arm 13 rotates on the slide plate 19 so that it can enter from below into the disk mounting slit 4d on which the desired disk D, which has reached the take-out position on the rotary table 4, is mounted. The disk D is rotatably provided via a shaft 17 so as to lift a lower portion of the outer periphery of a desired disk D.

The third arm 14 is rotatably provided via a rotation shaft 18 above the desired disk D which has reached the take-out position on the rotary table 4. Has come to support. The third arm 14 is retracted from a desired upper portion of the outer periphery of the disk D when the clutch is turned on by a clutch mechanism (not shown), and drops off when the clutch is turned off.

Here, as described later, the second arm 13
When loading a desired disk D from the rotary table 4 to the disk drive unit 20 with the second arm 1
3 is slid in the inner circumferential direction of the rotary table 4 by the slide plate 19, while the second arm 1
When the desired disk D is unloaded from the disk drive unit 20 to the rotary table 4 in 3, the rotation shaft 17 of the second arm 13 is slid in the outer circumferential direction of the rotary table 4 by the slide plate 19, 2
The length of the arm 13 can be set short.

The first to third arms 12 to 14 include:
A concave groove 1 for gripping the outer periphery of a desired disk D
2a to 14a are formed respectively. Also, a roller 12a ₁ to spliced is attached two the outer peripheral portion of the desired disc D in a concave groove 12a of the first arm 12,
Further, the second arm 13 is formed with a projection 13b which comes into contact with a cam mechanism (not shown) at the time of retreat in an operation described later. At this time, as described above, a large number (200 sheets)
In order to place the disk D on the disk mounting slit 4d, the interval between adjacent disk mounting slits 4d on the rotary table 4 is reduced. Accordingly, the widths B ₁ and B ₂ of the concave grooves 12 a and 13 a of the first and second arms 12 and 13 are narrowed so as not to interfere with the disk D adjacent to the desired disk D on the rotary table 4. Has formed. On the other hand, the width B of the concave groove portion 14a of the third arm 14 formed at a portion on the rotary table 4 which does not interfere with the disk D adjacent to the desired disk D
₃ is formed widely. At this time, the first to third arms 1
The widths B _{1 to} B ₃ of the 2 to 14 concave grooves 12 a to 14 a are B
3> B ₁ ≧ B ₂ , and the groove widths b _{1 to} b _{3 of} the concave grooves 12 a to 14 a are also set to a relationship of b 3> b ₁ ≧ b ₂ with respect to the thickness of the disk D. I have.
In the case of B ₁ > B ₂ , b ₁ > b ₂ , when the first and second arms 12, 13 come into contact with the radially mounted disc D, whether the first and second arms 12, 13 come into contact with the outer peripheral side of the rotary table 4, This is due to the difference in the diameter of the contact on the inner peripheral side of the rotary table 4.

As will be described later, when loading a desired disk D from the rotary table 4 to the turntable 22 of the disk drive unit 20, the first and second disks are used.
When the discs D are unloaded from the turntable 22 to the rotary table 4, the first to third arms 12 to 14 are rotated. At this time, it is detected whether the diameter of the disc D is 12 cm or 8 cm by a rotation angle until the first arm 12 contacts the outer right side of the disc D at the time of loading. The operation of the first arm 12 is determined based on a cam mechanism that does not operate, so that the first to third arms 12 to 14 rotate at predetermined timings at predetermined timings according to the diameter of the disk D.

Next, to the right of the desired disk D take-out position, as shown in FIG.
0 is provided. Here, a traverse base 21 serving as a base of the disk drive unit 20 is provided upright with respect to the chassis base 2 and substantially in parallel with a desired disk D mounted on the rotary table 4. A motor 23 to which the turntable 22 is fixed is attached to the traverse base 21 at right angles to the traverse base 21. Therefore, the disk D is rotatably supported by the turntable 22 in a substantially vertical posture. On the side of the turntable 22, an optical pickup 24 is provided so as to be able to reciprocate in the radial direction of the disk D. At this time, the disk drive unit 20 is rotatable by a rotation base table 25 (FIG. 5) in a direction perpendicular to the paper surface, in other words, in the axial direction of the turntable 22. When the boss faces the turntable 22, the chucking boss 2 of the turntable 22
2a is structured to advance and retreat with respect to the center hole H of the disk D.

Next, as shown in FIGS. 5A and 5B,
A disk clamp mechanism 30 is attached to the loading base 15 so as to face the turntable 22 of the disk drive 20.

The disk / clamp mechanism 30 is provided with a clamper holding member (hereinafter, referred to as a clamper holding arm 31).
, A disc clamper 34 suspended in the clamper holding arm 31 in a loosely fitted state, and a regulating member 35 for regulating movement of the disc clamper 34 in the direction of gravity.

That is, a clamper holding arm 31 is provided on the right side of the loading base 15 so as to be rotatable about a rotary shaft 33 while being urged toward the turntable 22 by a torsion spring 32. Here, one end of the clamper holding arm 31 extends to the turntable 22 side, and the disc clamper 34 is suspended in a round hole 31a formed in one end side of the clamper holding arm 31 in a loosely fitted state. .

The disc clamper 34 has a first flange portion 34a provided on the turntable 22 side with a diameter larger than the diameter of the round hole 31a, and a diameter smaller than the diameter of the round hole 31a so that the inside of the round hole 31a can be loosely fitted. And a second flange portion 34c formed to have a diameter larger than the diameter of the round hole 31a so as to prevent the hole from being removed from the inside of the round hole 31a. The disk clamper 34 is provided so as to be able to freely contact and separate from the turntable 22 by rotating the clamper holding arm 31 clockwise or counterclockwise while facing the turntable 22.

The clamper holding arm 31 has a regulating member 35 for regulating the movement of the disc clamper 34 in the direction of gravity.
Are supported rotatably around the center. Before the disc D is chucked to the turntable 22 in a substantially vertical posture, the regulating member 35 is rotated clockwise about the pivot shaft 37 by the bias of the spring 36, and the disc clamper 34 is stopped. Positioning piece 31b of clamper holding arm 31 such that the center substantially matches the center of turntable 22.
When the stepped support portion 35a provided on one end side of the regulating member 35 abuts on the second flange portion 34c of the disc clamper 34 from below in a state where the
The disc clamper 34 suspended in the round hole 31a of the clamper holding arm 31 in a loosely fitted state is restricted from moving in the round hole 31a in the direction of gravity by its own weight.

On the other hand, as will be described later, when the disc D is chucked on the turntable 22 in a substantially vertical posture, the convex portion 12b formed on the first arm 12 is pressed against the urging force of the spring 36 to restrict the regulating member 35. Projection piece 35 formed on
By contacting the control member b, the regulating member 35 is retracted from the disk clamper 34.

Next, the overall operation of the automatic disk selecting apparatus 1 having the above configuration will be described with reference to FIGS.

FIGS. 6 to 11 show the operation of loading a disk from a rotary table to a turntable. FIG. 6A shows the case of a 12 cm CD.
(B) is a diagram showing the case of an 8 cm CD, and FIGS.
FIG. 13B is a front view and a side view showing a state before the disk is chucked on the turntable in the disk clamping mechanism according to the present invention, and FIGS. FIGS. 14 to 19 are front and side views showing a state where the disc is chucked on the turntable in the clamp mechanism, and FIGS. 14 to 19 are views showing the operation of unloading the disc from the turntable to the rotary table. FIG. 3B shows a case of a 12 cm CD, and FIG. 4B shows a case of an 8 cm CD.

Although FIGS. 6 to 11 and FIGS. 14 to 19 show the case of 12 cm CD and the case of 8 cm CD, respectively, the basic operation of the first to third arms 12 to 14 is shown. Are substantially the same irrespective of the disk diameter, and the operation timing and the rotation angle of the first to third arms 12 to 14 slightly vary depending on the disk diameter.
The case of 2 cm CD and 8 cm CD will be described together.

First, as shown in FIGS. 6A and 6B,
The rotary table 4 is rotated to move a desired disk D selected from a large number of disks D placed on the rotary table 4 from a standby position to an unloading position. In this state, the desired disk D is mounted in the disk mounting slit 4d of the rotary table 4 in a substantially upright state, and the first to third arms 12 to 1 are set.
4 is retracted from the outer peripheral portion of the desired disk D. The rotating shaft 17 of the second arm 13 is
The rightward movement of (FIG. 4) reaches the position close to the rotation shaft 16 of the first arm 12. Thereafter, the operation of loading the disk D from the rotary table 4 side to the turntable 22 side mainly uses the first and second arms 12 and 13.

That is, as shown in FIGS. 7A and 7B,
The first arm 12 is rotated counterclockwise about the rotation shaft 16, and the second arm 13 is rotated clockwise about the rotation shaft 17. Here, the first arm 12 is directed to the desired disk D slightly earlier than the second arm 13, and the first arm 12 is brought into contact with the outer peripheral right side portion of the disk D. Also, the rotation shaft 17 of the second arm 13
Starts moving leftward toward the inner peripheral side of the rotary table 4 via the slide plate 19 (FIG. 4).

Next, as shown in FIGS. 8A and 8B,
The second arm 13 enters the disk mounting slit 4d of the rotary table 4 from below, raises the lower part of the outer periphery of the desired disk D, and separates the disk D from the disk mounting slit 4d. 2 arms 13
Arm 12 abutting on the right side of the outer periphery of disk D
And the disk D is sandwiched. Here, when the diameter of the disk D is 12 cm, the third upper part of the outer periphery of the disk D lifted by the second arm 13 is retracted upward.
Guided by arm 14, the diameter of disk D is 8cm
In this case, although the disk D cannot wait until guided by the third arm 14, there is no problem. Then, while maintaining the state where the desired disc D is sandwiched between the first and second arms 12 and 13, the rotation direction of the first arm 12 is reversed to rotate clockwise around the rotation shaft 16. And the rotating shaft 17 of the second arm 13 is
9 (FIG. 4) while moving to the left
Is continuously rotated clockwise to move the disk D to the turntable 22 side of the disk drive unit 20.

Next, as shown in FIGS. 9A and 9B,
While maintaining the state where the desired disk D is sandwiched between the first and second arms 12 and 13, the first and second arms 12 and 1
When the disc 3 is further rotated clockwise, the disc D approaches the turntable 22 side. Further, the rotating shaft 17 of the second arm 13 moves further to the left via the slide plate 19 (FIG. 4).

Next, as shown in FIGS. 10A and 10B, the first and second arms 1 and 2 are maintained while the desired disk D is sandwiched between the first and second arms 12 and 13.
2 and 13 are further rotated clockwise, and the rotation shaft 17 of the second arm 13 is further moved to the left via the slide plate 19 (FIG. 4). When the disk drive unit 20 faces the turntable 22,
Is rotated to the front perpendicular to the plane of the paper, and the chucking boss 22a of the turntable 22 enters the center hole H of the disc D, whereby the desired disc D is supported in a posture substantially perpendicular to the turntable 22.

Thereafter, a disk clamp mechanism 30 (FIG. 5), which will be described later, operates.
As shown in (B), when the desired disk D is chucked on the turntable 22, the first and second arms 1
2 and 13 are retracted from the outer peripheral portion of the disk D. That is, the first arm 12 further rotates clockwise to retract from the outer periphery of the disk D, and the rotation of the first arm 12 causes the regulating member 35 (FIG. 5) of the disk clamp mechanism 30 to interlock. ing. On the other hand, the movement of the rotation shaft 17 of the second arm 13 to the left is stopped, and the second arm 13 reverses the rotation direction and retracts into the disk mounting slit 4 d of the rotary table 4. I have. At this time, the retreat of the second arm 13 is reversed and retracted by pushing the projection 13b by a cam mechanism (not shown).

Next, as shown in FIGS. 12A and 12B, before the desired disk D is chucked to the turntable 22 in a substantially vertical posture, one end of the clamper holding arm 31 The disk clamper 34 suspended in the round hole 31 a formed in a loosely fitted state is separated from the turntable 22 while facing the turntable 22.

The restricting member 35 rotatably supported by the clamper holding arm 31 is rotated clockwise about the rotating shaft 37 by the urging of the spring 36 to rotate the disc / disk.
The positioning piece 31 of the clamper holding arm 31 such that the center of the clamper 34 and the center of the turntable 22 substantially match.
b, the step-like supporting portion 35a provided on one end side of the regulating member 35 is attached to the disc clamper 34.
Abuts on the second flange portion 34c from below to restrict the disk clamper 34 from moving in the direction of gravity in the round hole 31a by its own weight. Thus, before chucking the disc D, the center of the disc clamper 34, the center hole H of the disc D loaded on the turntable 22 side, and the center of the turntable 22 substantially match. At this time, the convex portion 12b formed on the first arm 12 is
It is separated without contacting b.

Then, the disk drive unit 20 is rotated by the rotation base table 25 (FIG. 5) to cause the chucking boss 22a of the turntable 22 to enter the center hole H of the disk D, and the clamper holding arm 31 Is turned to the turntable 22 side to bring the disk clamper 34 closer to the turntable 22.

Next, as shown in FIGS. 13A and 13B, the center hole H of the desired disk D is inserted into the turntable 22.
After the disk clamper 34 is fitted to the chucking boss 22a of the turntable 2 through the disk D,
2, the desired disk D is securely chucked to the turntable 22 in a substantially vertical posture. Thereafter, when the first arm 12 rotates away from the outer peripheral portion of the disk D, the projection 1 formed on the first arm 12 is rotated.
2b abuts on the protruding piece 35b formed on the regulating member 35, so that the regulating member 35
, The step-like supporting portion 35a provided at one end of the regulating member 35 is retracted below the second flange portion 34c of the disc clamper 34. When the desired disk D is chucked to the turntable 22 by the disk clamper 34, the magnet 22b fixed in the central concave portion of the chucking boss 22a of the turntable 22 and the central convex portion of the disk clamper 34 And the magnetic plate 34da fixed to the turntable 22 is attracted to each other, so that the disk clamper 34 loosely fitted in the round hole 34a of the clamper holding arm 31 is integrated with the turntable 22 via the disk D supported in a substantially vertical posture. Can rotate.

The disk clamp mechanism 30 according to the present invention can be applied to any structure that rotatably supports the disk D in a posture substantially perpendicular to the turntable 22.
In addition to the embodiments, the present invention can be applied to, for example, a computer in which a compact disk (CD-ROM) for a computer mounted on a substantially vertical tray is chucked in a posture substantially perpendicular to a turntable. At this time, the operation of bringing the disc clamper 34 close to the turntable 22 is performed by the disc clamper 3.
4. There are a case where at least one of the turntables 22 approaches the other and a case where both approach each other as in the embodiment.

Next, when the driving of the desired disk D is completed, as shown in FIGS.
To the third arm 12 to 14 are retracted from the outer peripheral portion of the disk D chucked to the turntable 22. Thereafter, the operation of unloading the desired disk D from the turntable 22 side to the rotary table 4 side is not the reverse operation of the above-described loading operation.
First to third arms 12 to 14 are used.

That is, as shown in FIGS. 15A and 15B, in a state where the desired disk D is chucked by the disk clamper 34 in a substantially vertical posture on the turntable 22, the first arm 12 Is rotated counterclockwise about the rotation shaft 16 so that the first arm 12 abuts on the right side of the outer periphery of the disk D, and the clutch mechanism (not shown) of the third arm 14 is turned off. Then, the third arm 14 is rotated counterclockwise about the rotation axis 18 by gravity and the third arm 14 is brought into contact with the upper left portion of the outer periphery of the disk D. Then, the turntable 22 and the disc clamper 34 are returned to the original initial state. The rotation of the first arm 12 in the counterclockwise direction causes the regulating member 35 to abut on the disk clamper 34 again as described with reference to FIG. At this time, since the width of the concave groove 14a formed in the third arm 14 is wide, the third arm 14
, The upper left portion of the outer periphery of the disk D can be reliably inserted into the concave groove portion 14a. Further, although the second arm 13 only needs to be retracted into the disk mounting slit 4d of the rotary table 4 here,
Since the forward path and the return path are partially shared by a cam mechanism (not shown), the rotating shaft 17 is rotated while moving rightward toward the outer peripheral side of the rotary table 4 via the slide plate 19 (FIG. 4). The disk D rotates clockwise around the shaft 17 and approaches the lower left of the outer periphery of the disk D so as not to contact the disk D.

Next, as shown in FIGS. 16A and 16B, the first arm 12 is further rotated counterclockwise while keeping the first arm 12 in contact with the right side of the outer periphery of the disk D, and the first arm 12 is rotated. 12, the disk D is slightly lifted upward, and the rotating direction is reversed clockwise while the third arm 14 is in contact with the upper left portion of the outer periphery of the disk D. The first arm 12 and the third arm 14 The disc D is moved to the rotary table 4 with D being sandwiched. Further, the second arm 13 reverses the rotating direction counterclockwise while the rotating shaft 17 moves further rightward through the slide plate 19 (FIG. 4), and the disk mounting slit of the rotary table 4 is rotated. 4
Although it is moved inside d, it does not come into contact with the disk D here.

Next, as shown in FIGS. 17A and 17B, the first arm 12 is further rotated counterclockwise while keeping the first arm 12 in contact with the right side of the outer periphery of the disk D. The lower right part of the outer periphery of D comes into contact with the second arm 13 that has moved into the disk mounting slit 4d. Here, the rotation of the third arm 14 is stopped, and in the case of a 12 cm CD, the third arm 14 guides the upper outer periphery of the disk D while
In the case of cmCD, the upper outer periphery of the disk D does not abut on the third arm 14.

Next, as shown in FIGS. 18A and 18B, the first arm 12 is further rotated in the counterclockwise direction while keeping the first arm 12 in contact with the right side of the outer periphery of the disk D. D
When the second arm 13 supporting the lower right part of the outer periphery of the disk is further rotated counterclockwise and moved below the disk mounting slit 4d, the desired disk D is mounted again in the disk mounting slit 4d. Is done. Here, the desired disk D
Of the disk D is separated from the third arm 14. Further, the movement of the rotating shaft 17 of the second arm 13 to the right stops.

Next, as shown in FIGS. 19A and 19B, when the desired disk D is completely mounted in the disk mounting slit 4d, the first and second arms 12, 13 are moved. When the disk D is evacuated from the outer peripheral portion of the desired disk D, the automatic disk selecting device 1 returns to the initial state.

[0056]

According to the disk clamp mechanism according to the present invention described in detail above, according to the first aspect, the disk clamper suspended in the hole formed in the clamper holding member while being loosely fitted, facing the turntable. When the control member is positioned with respect to the clamper holding material such that the center of the disc clamper and the center of the turntable are substantially aligned when the control member is separated from the turntable, the control member is brought into contact with the disc clamper. On the other hand, when the disk clamper and the turntable are brought close to each other and the disk clamper is attracted to the turntable via the disk, the regulating member is retracted from the disk clamper. Since the clamper can be restricted from moving in the direction of gravity in the hole formed in the clamper holding material, When rotatably supported on the turntable disc substantially in vertical position, it can be reliably chucked disk to the turntable by a disk clamper. As a result, there is an advantage that the disk rotating at a high speed does not fly out of the turntable and the disk clamper is not attracted to the turntable in a biased manner.

According to a second aspect of the present invention, there is provided a disk transport means for loading one disk selected from a plurality of disks stored in the disk storage unit onto a turntable of a disk drive unit, and a disk clamper. When attracted to the turntable via the disc, the regulating member is moved in
Since it is retracted from the clamper, in addition to the effect described in claim 1, there is no need to newly provide a means for retracting the regulating member, and the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining an automatic disk selecting apparatus employing a disk clamping mechanism according to the present invention.

FIG. 2 is an enlarged plan view showing first and second photodetectors formed on the rotary table shown in FIG. 1 and first to third optical sensors;

FIG. 3 is a diagram showing output waveforms of first to third optical sensors shown in FIG. 2;

FIG. 4 is an enlarged front view showing the vicinity of a take-out position of the rotary table shown in FIG. 1;

FIG. 5 is a view for explaining a disk clamp mechanism according to the present invention.

FIG. 6 is a diagram showing an operation of loading a disk from a rotary table to a turntable.

FIG. 7 is a diagram showing an operation of loading a disk from a rotary table to a turntable.

FIG. 8 is a diagram showing an operation of loading a disk from a rotary table to a turntable.

FIG. 9 is a diagram showing an operation of loading a disk from a rotary table to a turntable.

FIG. 10 is a diagram showing an operation of loading a disk from a rotary table to a turntable.

FIG. 11 is a diagram showing an operation of loading a disk from a rotary table to a turntable.

FIG. 12 is a diagram showing a state before the disk is chucked on the turntable in the disk clamping mechanism according to the present invention.

FIG. 13 is a view showing a state where the disk is chucked to the turntable in the disk clamping mechanism according to the present invention.

FIG. 14 is a diagram showing an operation of unloading a disk from a turntable to a rotary table.

FIG. 15 is a diagram showing an operation of unloading a disk from a turntable to a rotary table.

FIG. 16 is a diagram showing an operation of unloading a disk from a turntable to a rotary table.

FIG. 17 is a diagram showing an operation of unloading a disk from a turntable to a rotary table.

FIG. 18 is a diagram showing an operation of unloading a disk from a turntable to a rotary table.

FIG. 19 is a diagram showing an operation of unloading a disk from a turntable to a rotary table.

FIG. 20 is a diagram showing a disk device to which a conventional disk clamp mechanism is applied.

FIG. 21 is an enlarged side view of a conventional disk clamp mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Automatic disk selection device, 4 ... Disk storage part (rotary table), 12-14 ... Disk conveyance means (1st-3rd arm), 20 ... Disk drive part, 22 ... Turntable, 22b ... Magnet, 30 ... Disc clamp mechanism section, 31: clamper holding material (clamp holding arm), 34: disc clamper, 34d: magnetic plate, 35: regulating member, D: disc.

Claims (2)

[Claims] A turntable provided in a disk drive unit for rotatably supporting a disk in a substantially vertical posture, contacting and separating with the turntable while facing the turntable, and a clamper holding member. A disk clamper suspended in a loosely fitted state in the formed hole, and provided so as to be able to advance and retreat with respect to the disk clamper,
And a regulating member that regulates the movement of the disc clamper in the direction of gravity, and a unit that attracts the disc clamper to the turntable via the disc, wherein the disc clamper is separated from the turntable. When the restricting member is positioned with respect to the clamper holding member such that the center of the disc clamper and the center of the turntable substantially coincide with each other, the restricting member abuts on the disc clamper. While
A disc clamp for retreating the regulating member from the disc clamper when the disc clamper and the turntable approach each other to attract the disc clamper to the turntable via the disc; mechanism. 2. A disk storage unit for storing a plurality of disks in a substantially vertical posture, and one disk selected from the plurality of disks stored in the disk storage unit is loaded on a turntable of the disk drive unit. A disk transporting means, wherein when the disk clamper is attracted to the turntable via the disk, the regulating member is retracted from the disk clamper in conjunction with the disk transporting means. Item 3. The disk clamp mechanism according to Item 1.