JP2004281048A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stop the rotation of a disk when ejecting the disk rotating at a high speed by movement of a tray. <P>SOLUTION: A CD-ROM drive 11 has a braking member 51 which is brought into slide contact with the outer periphery of a disk D<SB>A</SB>during an ejection operation, fixed to the inside of a side face 18c which rises in an extension part 18b extended to the right of a chassis 18. A soft material such as a felt or a sponge is used for the braking member 51 so as not to damage the outer periphery of the disk D<SB>A</SB>. Moreover, the braking member 51 doesn't obstruct the operation of a tray guide mechanism 17 and a pickup part 23 when a tray 12 is loaded into the device, because the braking member 51 is provided at a position separated from the outer periphery of the disk D<SB>A</SB>. The disk D<SB>A</SB>is braked in the ejection operation process of the tray 12 by friction with a braking member 13 and is drawn to a disk exchange position in a stopped state. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a disk device, and more particularly to a disk device configured to rotate a disk mounted on a tray at a high speed to read information recorded on a recording surface of the disk.

  For example, as a storage medium for storing information such as a database and software, a compact disk reproduced by a laser pickup is used. For this reason, a built-in CD-ROM drive device built in the housing of a notebook computer has been developed so that it can be incorporated in a miniaturized notebook computer or the like.

  FIG. 14 is a plan view showing an example of a built-in type CD-ROM drive as a conventional disk drive.

  In this type of apparatus, a tray 1 on which a disk (not shown) is mounted is slidably provided in the front-rear direction (A and B directions), and the tray 1 is manually slid. I have. Below the opening 1a of the tray 1, a turntable 2 that clamps the disk and is driven to rotate by a spindle motor (not shown), and a pickup unit 3 that optically detects information recorded on the disk Is attached.

  The eject mechanism incorporated in the conventional device is configured to perform an eject operation by pressing an eject button 4 provided on the front bezel 1b of the tray 1. When the tray 1 is mounted, the eject mechanism is supported on the lower surface of the tray 1. The locking lever 5 is locked to a pin 6 provided on the chassis 10.

  The locking lever 5 is formed in an L shape, has a hook-shaped locking portion 5a for locking the pin 6 at one end, and has a contact portion 5b at the other end for contacting the eject button 4. The locking lever 5 is rotatably supported by a shaft 5c, and is urged by a coil spring 7 in a clockwise direction, that is, a direction in which the pin 6 is locked.

  Further, a pressing mechanism for pressing the tray 1 in the direction A is provided at the rear of the tray 1. This pressing mechanism moves the tray 1 by a predetermined distance in the direction A in order to make it easier to pull out the tray 1. A pressing lever 8 slidably attached to a projection 1c protruding from the lower surface of the tray 1 is provided. It is configured to be urged in the direction B by the coil spring 9.

  When the tray 1 is mounted in the apparatus, the end 8a of the pressing lever 8 contacts the rear inner wall 10a of the chassis 10 in the process of mounting the tray 1 in the apparatus. The coil spring 9 is relatively pulled by the length of the protrusion 8a.

  As shown in FIG. 15, when the eject button 4 is pressed, the locking lever 5 rotates in the locking releasing direction (counterclockwise) and is implanted on the chassis 10 below the tray 1. Release the lock of the pin 6. As described above, when the locking lever 5 is released by the pressing operation of the eject button 4, the pressing lever 8 urged by the coil spring 9 presses the rear inner wall 10 a of the chassis 10. The tray 1 is pushed out in the ejecting direction (A direction).

As shown in FIG. 16, the tray 1 is pushed out by the above-described ejecting operation until the front bezel 1b is separated from the chassis 10 by a predetermined distance L and the tray 1 can be pulled out. Thereafter, the operator pulls out the tray 1 to a predetermined disk replacement position where the mounted disk is exposed, and performs disk replacement (for example, see Patent Document 1).
JP-A-7-254201

  In the conventional built-in CD-ROM drive device configured as described above, when the eject button 4 is pressed, the power supply to the spindle motor for driving the disk is stopped, but the turntable and the rotor of the motor are stopped. Is rotating due to inertia. Therefore, in the conventional apparatus, the spindle motor for driving the disk is braked by the back electromotive force to stop the turntable on which the disk is mounted. Then, the disk is ejected in a state where the rotation due to inertia is stopped.

  However, in the built-in type CD-ROM drive, to increase the information reading speed, the rotational speed of the disk has been increased six or eight times. When the rotation speed of the disk is increased six times or eight times as described above, the time required for the disk to stop at the time of ejection becomes long. Therefore, when the ejection button 4 is pressed after the reading of the information recorded on the disc is completed, the tray 1 is moved in the ejecting direction before the disc stops, and the disc is ejected while being rotated by inertia. The problem arises.

  Therefore, an object of the present invention is to provide a disk device that solves the above-mentioned problems.

The invention according to claim 1 includes a chassis,
Disk holding and rotating means for holding and rotating a disk as a recording medium, and a tray provided with a read head for reading information stored on the disk;
A slide rail slidably engaged with the side surface of the tray; and a guide unit integrally provided on the chassis and slidably holding the slide rail. A tray guide mechanism movably supporting between a mounting position for reading and an exchange position for exchanging a disc;
In a disk device comprising:
The tray and the tray guide mechanism are formed such that the width of the disk is smaller than the outer diameter of the disk so that a part of the disk protrudes outside the tray guide mechanism,
The chassis has an extension portion for accommodating a disk protruding outside the tray guide mechanism,
The disk is provided on the extension portion of the chassis protruding outside the tray guide mechanism, separated from the disk when the tray is located at the mounting position, and the disk is moved in the process of moving the tray from the mounting position to the replacement position. A braking member that contacts the outer periphery of the portion that protrudes outward from the tray guide mechanism of
Comprising,
When the tray is moved from the mounting position to the replacement position in a state where the disk is held by the disk holding and rotating means, an outer periphery of a portion protruding from the tray guide mechanism is provided in the expansion portion of the chassis. In addition, braking is performed by contacting the braking member.

The invention according to claim 2 is the disk device according to claim 1,
The braking member is provided at a position in sliding contact with the outer periphery of the disk,
The tray guide mechanism is arranged so as to be opposed to an intermediate position in the radial direction of the disk so as to be separated from the braking member.

  Therefore, according to the first aspect of the present invention, when the tray is moved from the mounting position to the replacement position while the disk is held by the disk holding / rotating means, the outer periphery of the portion protruding from the tray guide mechanism is formed by the chassis. Since the brake is brought into contact with the braking member provided on the extension part, the disc can be ejected in a stopped state even when the disc is driven at high speed to read the information recorded on the disc at high speed. it can. Further, since the braking member is disposed at a position sufficiently separated from the tray and the tray guide mechanism, it is possible to reliably prevent the braking member from contacting the tray.

  According to the second aspect of the present invention, the braking member is provided at a position where the braking member is in sliding contact with the outer periphery of the disk, and the tray guide mechanism is disposed so as to face the intermediate position in the radial direction of the disk so as to be separated from the braking member. Therefore, it is possible to arrange the braking member and the tray guide mechanism so that they are sufficiently separated from each other and do not come into contact with each other.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows the appearance of a CD-ROM drive as a premise of a disk drive according to the present invention.

  The CD-ROM drive device 11 (hereinafter referred to as “device”) is a self-contained device that is built in the housing of a notebook personal computer (not shown).

The device 11 includes a tray 12 for containing toward the disk D _{A (indicated} by a chain line) as a recording medium is provided slidably in the longitudinal direction (A, B direction). When the disc is loaded, the tray 12 is slid in the direction B and locked in a state housed in the apparatus 11. The front bezel 15 of the tray 12 is provided with a rectangular mounting hole 15a extending in the lateral direction.

  An eject operation knob 14 is slidably attached along an attachment hole 15 a of the front bezel 15 of the tray 12. The eject operation knob 14 is normally biased in the direction D, and is slid in the direction C when the tray 12 is ejected.

  Since the eject operation knob 14 is configured to be slid, even if the operator accidentally touches the eject operation knob 14 when operating the keyboard (not shown) of the notebook computer, the eject operation knob 14 is operated. The control knob 14 cannot be slid in the C direction, and the tray 12 cannot be ejected.

A pair of brake members 13 on the front side lower surface of the top plate 19 for covering the upper side of the tray 12, which in sliding contact with the label side upper surface of the disk D _A (non-recording surface) at the time of eject operation to brake the disc D _A (shown in phantom) Is provided. The braking member 13 is made of a soft material such as felt or sponge, and does not damage the surface of the disk DA. Further, sufficient contact area for the braking member 13, the left-right direction orthogonal to the ejection direction of the disc DA (A direction) (C, D direction) are formed so as to extend in, to brake the disc D _A Is secured.

Then, the tray 12 is slid to eject operation knob 14 in the direction C as described later is ejected in the direction A, by the operator pulls the front bezel 15 of the tray 12 in the A direction, the upper surface of the disk D _A Are in sliding contact with the pair of braking members 13. Therefore, rotation of the disk D _A in the eject operation process of the tray 12 is braked by the friction between the braking member 13, the disk D _A is pulled out to the disc exchange position with the tray 12 in a stopped state.

  FIG. 2 is an exploded perspective view showing the configuration of the CD-ROM drive device 11.

The CD-ROM drive device 11 includes the tray 12, a drive unit 16 fixed to the lower surface of the tray 12, a tray guide mechanism 17 for guiding the sliding operation of the tray 12, a chassis 18 for supporting the tray 12, A top plate 19 is fixed to the chassis 18 so as to cover the upper portion of the mounted tray 12. _A pair of braking members 13 (shown by broken lines) that are in sliding contact with the upper surface of the disk DA during the ejecting operation are fixed to the lower surface on the front side of the top plate 19.

  The tray 12 is formed so that the width thereof is smaller than the outer diameter of the disk so that a part of the disk (not shown) protrudes from the tray 12, and slides in the A and B directions by manual operation to slide the disk. It reaches the replacement position or the disk mounting position. Therefore, the device 11 is not provided with a drive mechanism (comprising a motor and a transmission mechanism) for driving the tray 12 in the A and B directions, and the number of parts is reduced by that much, so that the size and size can be reduced. The thickness has been reduced.

  At the front of the lower surface of the tray 12, there is provided an eject mechanism 20 which is operated by sliding operation of the eject operation knob 14, and at the rear of the lower surface of the tray 12, a pressing force for pressing the tray 12 in the ejecting direction (A direction) is provided. A mechanism 21 is provided.

  The drive unit 16 is rotated by a base 22 fixed to the lower surface of the tray 12, a pickup unit 23 attached to the base 22, a pickup drive unit 24 for moving the pickup unit 23 in the disk radial direction, and a spindle motor 25. It comprises a driven turntable 26 and a flexible wiring board 28 for connecting the pickup unit 23 and the substrate 27 of the spindle motor 25.

  The tray guide mechanism 17 includes slide rails 31 and 32 slidably engaged with engagement portions 29 and 30 provided on both side surfaces of the tray 12, and slide rails 31 and 32 fixed to the inner side wall of the chassis 18. And guide members 33 and 34 for slidably holding the guide members 33 and 34.

  In the tray guide mechanism 17, the tray 12 is pulled out in the direction A, and the slide rails 31, 32 slide in the same direction. Therefore, the tray 12 pulled out by the eject operation slides to the eject position while being held by the guide members 33 and 34 via the slide rails 31 and 32.

  FIG. 3 is a plan view showing the ejection mechanism 20 and the pressing mechanism 21 in a state where the tray 12 is locked at the mounting position.

After the disc D _A is clamped on the turntable 26, the tray 12 is moved to the mounting position, is engaged with the mounting position in the apparatus. At that time, the disk D _A reaches the mount position through the pair of brake members 13. However, when the disk D _A is in the mounting position are spaced apart from a pair of the braking member 13, a pair of the braking member 13 does not interfere with the reading operation of the pickup unit 23.

  The eject mechanism 20 incorporated in the apparatus 11 of the present embodiment is configured to perform an eject operation by a slide operation of an eject operation knob 14 provided on the front bezel 15 of the tray 12. It comprises a locking member 41 slidably supported in the D direction, a coil spring 42 for urging the locking member 41 in the D direction, and a pin 43 implanted in the chassis 18.

  The locking member 41 is engaged with a connecting portion 41 a to which the ejecting operation knob 14 is connected and a pair of protrusions 44 protruding from the lower surface of the tray 12 to regulate the sliding direction (C and D directions). It has a sliding hole 41b, a hook-shaped locking portion 41c locked to the pin 43, and a spring locking portion 41d to which one end of the coil spring 42 is locked. The other end of the coil spring 42 is hooked on a spring hook 45 that stands on the chassis 18.

  Therefore, the locking member 41 is supported so as to be slidable in the C and D directions orthogonal to the moving direction (A and B directions) of the tray 12, and the locking portion 41 c is attached to the pin 43 by the spring force of the coil spring 42. It is held in a locked position. Therefore, when the ejecting operation knob 14 is slid in the direction C, the locking member 41 slides in the same direction to reach the locking release position where the locking portion 41 c is separated from the pin 43.

  Therefore, when the tray 12 is mounted in the apparatus, the ejecting mechanism 20 locks the locking portion 41c of the locking member 41 supported on the lower surface of the tray 12 with the pin 43 provided on the chassis 18. Thus, the tray 12 can be locked at the mounting position.

  Further, a pressing mechanism 21 for pressing the tray 12 in the ejecting direction (A direction) moves the tray 12 by a predetermined distance in the A direction so that the tray 12 can be easily pulled out to the disk replacement position. The pressing mechanism 21 has a configuration in which a pressing lever 47 slidably attached to a pair of protrusions 46 protruding from the lower surface of the tray 12 is urged in the B direction by a coil spring 48.

  The coil spring 48 has one end hooked to a spring hooking portion 47 b at the front end of the pressing lever 47, and the other end hooked to a spring hooking pin 49 provided on the lower surface of the tray 12. The coil spring 48 is provided so as to press the tray 12 in the direction A perpendicular to the directions C and D in which the eject operation knob 14 and the locking member 41 slide. Therefore, the eject operation knob 14 and the locking member 41 are attached so as not to be slid by the spring force of the coil spring 48.

  When the tray 12 is mounted in the apparatus, the rear end portion 47a of the pressing lever 47 abuts against the rear inner wall 18a of the chassis 18 in the process of mounting the tray 12 in the apparatus. The coil spring 48 is relatively pulled by the length of the projecting end 47a. Therefore, when the tray 12 is mounted in the apparatus, the pressing lever 47 presses the rear inner wall 18a of the chassis 18 by the spring force of the coil spring 48, and presses the tray 12 in the ejecting direction (A direction) by the reaction force. ing.

  Here, the operation of the ejection mechanism 20 and the pressing mechanism 21 will be described. FIG. 4 is a plan view showing a state in which the eject operation knob 14 is slid, and FIG. 5 is a plan view showing a state in which the tray 12 is pushed out in the eject direction.

  As shown in FIG. 4, when the eject operation knob 14 is slid in the C direction, the locking member 41 also slides in the same direction, and a hook-shaped locking portion 41 c is implanted in the chassis 18. 43 to release the lock.

  As described above, when the locking member 41 is unlocked by the sliding operation of the eject operation knob 14, the pressing lever 47 of the pressing mechanism 21 presses the rear inner wall 18a of the chassis 18 by the spring force of the coil spring 48. The tray 12 is pushed out in the ejecting direction (A direction) by the reaction force.

The tray 12 slides to a position where the front bezel 15 is separated from the chassis 10 by a predetermined distance L by the ejecting operation. Thereby, the tray 12 is pushed out to the extent that the operator can pull it out. At this time, the disk D _A is not yet in sliding contact with the pair of brake members 13 provided on the lower surface of the top plate 19.

  As shown in FIG. 5, when the hand is released from the eject operation knob 14, the eject operation knob 14 and the locking member 41 return in the D direction by the spring force of the coil spring 42. Therefore, when the front bezel 15 of the tray 12 is pressed in the direction B after the disc replacement, the inclined portion of the hook-shaped locking portion 41 c of the locking member 41 slides on the pin 43 provided on the chassis 18. After sliding in the C direction and the inclined portion passing through the pin 43, it can return to the D direction again.

  6 is a plan view showing a process of pulling out the tray 12, FIG. 7 is a longitudinal sectional view along line VII-VII in FIG. 6, and FIG. 8 is a plan view showing a state where the tray 12 is pulled out to the disk replacement position. .

  As shown in FIG. 6, after the eject operation, the operator grips the front bezel 15 protruding from the chassis 18 and pulls the bezel 15 in the direction A so that the slide rails 31 and 32 on which the tray 12 supports both sides are slid. The slider slides while being held by the guide members 33 and 34 via the slide rails 31 and 32 together with the moving operation.

As shown in FIG. 7, the disk D _A by sliding operation of the tray 12 is in sliding contact with the pair of the braking member 13 provided on the lower surface of the top plate 19. Therefore, the disc D _A which has been rotated by inertia, the upper surface is braked by sliding contact with the pair of brake members 13. Then, the disk D _A is in a state of rotation is stopped by the friction between the pair of brake members 13.

As shown in FIG. 8, the lead to the disc exchange position the entire disk tray 12 is mounted on the turntable 26 is exposed, in a state where disk D _A which has passed through the pair of the braking member 13 is stopped rotating Ejected. Now the disc D _A mounted on the tray 12 can be easily removed, it enables the disc exchange.

  After the disc is replaced, the inclined portion of the hook-shaped locking portion 41c of the locking member 41 slides on the pin 43 provided on the chassis 18 by pressing the front bezel 15 of the tray 12 in the direction B. When the inclined portion passes through the pin 43 and returns to the direction D again, the locking portion 41 c of the locking member 41 is locked to the pin 43. Therefore, the tray 12 returns to the original mounting position shown in FIG. 3 and is locked at the mounting position.

  FIG. 9 is a perspective view showing an embodiment of the present invention, and FIG. 10 is a plan view showing a state where the tray is locked at a mounting position.

_A braking member 51 that is in sliding contact with the outer periphery of the disk DA during an ejecting operation is fixed to the inside of a side surface 18c that stands on an extending portion 18b (extended portion) that extends to the right side of the chassis 18. The braking member 51 is, for example, is used as the soft material of felt or sponge, it does not hurt the outer periphery of the disk D _A.

Further, the braking member 51, when the tray 12 is mounted in the apparatus, provided at a position away from the outer periphery of the disk D _A, that interfere with the operation of the read operation and the tray guide mechanism 17 of the pickup portion 23 There is no.

11 is a plan for explaining the ejecting operation of the tray 12, and FIG. 12 is a longitudinal sectional view taken along in FIG. 11 VII-VII line, 13 a state in which the outer periphery of the disk D _A is in sliding contact with the brake element 51 FIG.

  As shown in FIG. 11, when the ejecting operation knob 14 is slid in the direction C, the locking portion 41c of the locking member 41 is separated from the pin 43 implanted in the chassis 18 to release the locking. I do. When the locking member 41 releases the locking operation, the pressing lever 47 of the pressing mechanism 21 presses the rear inner wall 18a of the chassis 18 by the spring force of the coil spring 48. (A direction).

  The tray 12 slides to a position where the front bezel 15 is separated from the chassis 10 by a predetermined distance L by the ejecting operation. Thereby, the tray 12 is pushed out to the extent that the operator can pull it out.

Thus, as shown in FIGS. 11 and 12, when the tray 12 is ejected to the eject position from the mounting position in the apparatus, the braking member disk D _A is the outer periphery is provided on the side surface 18c inside the chassis 18 It comes into sliding contact with 51. Therefore, the disc D _A which has been rotated by inertia, its outer periphery is braked by sliding contact with the brake element 51. Then, the disk D _A is in a state of rotation is stopped by the friction between the braking member 51.

In this embodiment, since the braking member 51 in sliding contact with the outer circumference of the disc D _A, than configuration for sliding contact with the upper surface of the disk D _A as described above precondition, the braking torque is increased, the disk D _A rotating at high speed However, rotation can be stopped in a short time.

  As shown in FIG. 13, when the hand is released from the eject operation knob 14, the eject operation knob 14 and the locking member 41 return in the D direction by the spring force of the coil spring 42. Therefore, when the front bezel 15 of the tray 12 is pressed in the direction B after the disc replacement, the inclined portion of the hook-shaped locking portion 41 c of the locking member 41 slides on the pin 43 provided on the chassis 18. After sliding in the C direction and the inclined portion passing through the pin 43, it can return to the D direction again.

  After the ejection operation, the operator grips the front bezel 15 protruding from the chassis 18 and pulls the bezel 15 in the direction A, so that the tray 12 slides along with the slide operations of the slide rails 31 and 32 supporting both sides. And slides while being held by the guide members 33 and 34 via.

  The tray 12 reaches the disc replacement position where the entire disc mounted on the turntable 26 is exposed, and the disc DA that has passed the braking member 51 is ejected in a state where the rotation is stopped. Thus, the disk DA mounted on the tray 12 can be easily removed, and the disk can be replaced.

  After the disc is replaced, the inclined portion of the hook-shaped locking portion 41c of the locking member 41 slides on the pin 43 provided on the chassis 18 by pressing the front bezel 15 of the tray 12 in the direction B. When the inclined portion passes through the pin 43 and returns to the direction D again, the locking portion 41 c of the locking member 41 is locked to the pin 43. Therefore, the tray 12 returns to the original mounting position shown in FIG. 10 and is locked at the mounting position.

When such mounting the tray 12 into the apparatus, the outer periphery of the disk D _A with the tray 12 is slid in the B direction is in sliding contact with the brake element 51. At that time, since the disk D _A can be rotated so as overcome the braking member 51 with the mounting operation of the tray 12, the load acting on the tray 12 is reduced. Therefore, than configuration for sliding contact with the brake member on the upper surface of the disk D _A as described above precondition, the mounting operation of the tray 12 can be performed easily.

  The present invention is not limited to the CD-ROM drive device as in the above embodiment, and is similarly applied to other disk-shaped recording media, for example, CDs, magnetic disks, magneto-optical disks, and optical disks. .

  Further, the disk device of the present invention has been described as an example in which the disk device is housed in the housing of a notebook personal computer. However, the present invention is not limited to this, and other electronic devices such as a desktop personal computer are of course separate from the electronic device. It can also be applied to an apparatus configured to be used as an external device.

  In the above embodiment, the tray is moved by manual operation. However, the present invention is not limited to this, and it is needless to say that the present invention can also be applied to an apparatus configured to move the tray by driving means such as a motor.

1 is a perspective view of a CD-ROM drive device to which a premise example of a disk device according to the present invention is applied. FIG. 2 is an exploded perspective view of the CD-ROM drive device. It is a top view of the state where the tray was installed in the device. It is a top view for explaining operation by an ejection operation. FIG. 5 is a plan view showing a state in which an eject operation knob after an eject operation is returned. It is a top view showing a process in which a tray is pulled out. FIG. 7 is a longitudinal sectional view taken along line VII-VII in FIG. 6. FIG. 6 is a plan view showing a state where the tray is pulled out to a disk replacement position. It is a perspective view showing one example of the present invention. It is a top view showing the state where the tray was locked in the mounting position. FIG. 9 is a plan view for explaining an eject operation of the tray. FIG. 12 is a longitudinal sectional view taken along line VII-VII in FIG. 11. It is a plan view showing a state in which the outer periphery of the disk D _A is in sliding contact with the brake member. FIG. 11 is a plan view showing an example of a conventional built-in type CD-ROM drive device. FIG. 9 is a plan view for explaining an ejection operation of a conventional ejection mechanism. FIG. 16 is a plan view for explaining the ejection operation of the conventional ejection mechanism, following FIG. 15.

Explanation of reference numerals

Reference Signs List 11 CD-ROM drive device 12 Tray 13, 51 Brake member 14 Eject operation knob 15 Front bezel 16 Drive unit 17 Tray guide mechanism 18 Chassis 19 Top plate 20 Eject mechanism 21 Press mechanism 22 Base 23 Pickup unit 24 Pickup drive unit 25 Spindle Motor 26 Turntable 31, 32 Slide rail 33, 34 Guide member 41 Locking member 42 Coil spring 43 Pin 47 Press lever 48 Coil spring

Claims (2)

Chassis and
Disk holding and rotating means for holding and rotating a disk as a recording medium, and a tray provided with a read head for reading information stored on the disk;
A slide rail slidably engaged with the side surface of the tray; and a guide unit integrally provided on the chassis and slidably holding the slide rail. A tray guide mechanism movably supporting between a mounting position for reading and an exchange position for exchanging a disc;
In a disk device comprising:
The tray and the tray guide mechanism are formed such that the width of the disk is smaller than the outer diameter of the disk so that a part of the disk protrudes outside the tray guide mechanism,
The chassis has an extension portion for accommodating a disk protruding outside the tray guide mechanism,
The disk is provided on the extension portion of the chassis protruding outside the tray guide mechanism, separated from the disk when the tray is located at the mounting position, and the disk is moved in the process of moving the tray from the mounting position to the replacement position. A braking member that contacts the outer periphery of the portion that protrudes outward from the tray guide mechanism of
Comprising,
When the tray is moved from the mounting position to the replacement position in a state where the disk is held by the disk holding and rotating means, an outer periphery of a portion protruding from the tray guide mechanism is provided in the expansion portion of the chassis. A disk device that is braked by contacting the braking member. 2. The disk device according to claim 1, wherein
The braking member is provided at a position in sliding contact with the outer periphery of the disk,
The disk device, wherein the tray guide mechanism is disposed so as to be opposed to an intermediate position in a radial direction of the disk so as to be separated from the braking member.

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