JP4581530B2 - Disk unit - Google Patents

Description

  The present invention relates to a disk device, and in particular, a disk carried into a set position by a disk tray is held at a position where the disk is lifted from the disk tray by a chucking mechanism, and is rotated together with the chucking mechanism by a motor. The present invention relates to a disk device in which a recording surface of a disk to be read is optically scanned.

  In this type of disk device, such as a DVD drive, the disk is placed in the set position through a loading operation in which the disk tray is pulled out of the housing after being loaded from the housing by the unloading operation. It is brought in. In addition, a turntable directly connected to the rotating shaft of the motor is provided on one side of the disk setting position, whereas a clamper is provided on the other side, and these turntables and clampers are provided. Forms a chucking element of a chucking mechanism for chucking and rotating the disk. Then, when the movable frame mounted with the motor operates in synchronization with the operation of loading the disc into the set position, and the turntable as the chucking element moves forward through the operation of the movable frame, The disk placed on the disk tray is transferred to the turntable and the disk is lifted from the disk tray, and the clamper as a counterpart chucking element holds the disk between the turntable. Thus, the disk held at the position lifted from the disk tray by the chucking mechanism composed of the turntable and the clamper is rotated together with the chucking mechanism by the motor, and the recording surface of the disk is moved by the optical pickup during the rotation. Information is recorded or reproduced by scanning.

  In the disk device operating in this way, if the motor is overheated, its durability is impaired.

  On the other hand, conventionally, in a disk player, a protrusion for stirring air is provided on the lower surface of the turntable, and when the turntable is driven to rotate by a motor, the temperature of the disk player increases due to the air stirred by the protrusion. There has been known a technique intended to suppress the above-described problem (see, for example, Patent Document 1). In addition, as a dust removal device of a medium exchange type information storage / reproduction device, a dust is generated by flowing an air flow induced in a gap between a tray and a rotating information storage / reproduction medium through a spiral air flow path provided on the tray side. There is also known a technique for removing (see, for example, Patent Document 2). Furthermore, a technique for reducing the power loss of a spindle motor for rotating the disk by reducing the windage loss of the disk accommodated in the cartridge has also been known (see, for example, Patent Document 3).

JP-A-8-339623 JP-A-9-147542 JP 2000-57666 A

  As described above, in the disk device, if a motor for rotating the disk held by the chucking mechanism, such as a spindle motor, is overheated, its durability is impaired. For this reason, the use of a motor with excellent heat resistance makes it difficult for the motor to be deteriorated in durability due to overheating, but a motor with excellent heat resistance is so expensive.

  Therefore, the present inventor applies an air current to the motor to suppress the temperature rise of the motor, so that the motor is prevented from overheating. Therefore, it is not necessary to use an expensive motor, and the disk device is provided at a lower cost. Focused on what could be done.

  In this regard, the technique described in Patent Document 1 is such that air is agitated by the air agitation protrusions provided on the turntable. May be suppressed. However, in this case, since the projection is rotated to induce the wind, the load of the motor increases accordingly, and the contradiction that the temperature of the motor is likely to increase due to such an increase in load is provided. In addition, the technique proposed in Patent Document 2 merely uses the airflow induced in the gap between the tray and the rotating information storage / reproducing medium for dust removal, and suppresses the temperature rise of the motor. It's not that. Further, the technique proposed in Patent Document 3 is a technique intended to reduce the windage loss of a disk in a disk device using a cartridge. The disk is placed on a disk tray and the disk is loaded at a set position. This is different from the disk device having the structure. In addition, Patent Document 3 does not describe suppression of the temperature rise of the motor.

  Therefore, the inventor of the present application has made extensive investigations and completed the present invention.

  That is, according to the present invention, the rotating air induced in the gap between the disk and the disk tray as the disk held by the chucking mechanism is rotated is guided to the back side of the disk tray, and the motor temperature is increased. It is an object of the present invention to provide a disk device that can be efficiently used to suppress the rise.

The disc device according to the present invention is a chucking mechanism in which a disc placed on a disc placement portion of a disc tray and carried into a set position is connected to a rotation shaft of a motor as a rotation drive source at the set position. Thus, the recording surface of the disc held optically by the motor and rotated by the motor together with the chucking mechanism is optically scanned. Then, after the rotation of the disk, the rotational air induced in the gap between the disk and the disk mounting portion of the disk tray is guided from the front surface side to the back surface side of the disk mounting portion, and then the disk The disk tray is provided with an air passage that is blown out in a direction in which the back surface of the mounting portion is turned to be oriented at the installation location of the motor.

  With this configuration, the rotational air induced in the gap between the disk and the disk mounting portion of the disk tray with the rotation of the disk is guided from the front surface side to the back surface side of the disk mounting portion by the ventilation path. After that, it is oriented to the motor installation location over the back surface of the disk mounting part, so it can be used to efficiently guide the rotating air to the motor installation location and suppress the temperature rise of the motor Become. In this regard, even if the rotating air induced in the gap is guided from the front surface side to the back surface side of the disk mounting portion, the rotating air is diffused without going over the back surface of the disk mounting portion. Further, the effect of suppressing the temperature rise of the motor due to the rotating air is not sufficiently exhibited, and the durability of the motor is likely to be impaired.

In the present invention, the chucking mechanism includes a turntable as a reciprocating chucking element directly connected to the rotation shaft of the motor, and the turntable moves forward from the disk mounting portion of the disk tray. A clamper as a chucking element for holding the disc delivered to the table between the turntable and the reciprocating motion of the turntable located at the center of the disc placement portion on the disc tray. An opening that allows passage of time is established . For this reason, after the turntable moves forward and passes through the opening of the disk mounting portion, the disk is transferred from the disk mounting portion to the turntable, and then the clamper operates to move the disk to and from the turntable. Hold it. In addition, after the turntable moves backward to release the clamping state of the disk due to the cooperation with the clamper, when the turntable passes through the opening of the disk mounting section, the disk is transferred from the turntable to the disk mounting section. It is.

In the present invention, when the disk is chucked by the chucking mechanism, the motor is positioned at a position where the rotating air directed to the installation location of the motor by the ventilation path contacts . For this reason, the rotating wind is efficiently used to suppress the temperature rise of the motor.

In the present invention, the ventilation path is formed by a wind guiding path that penetrates the disk tray at an outer peripheral portion of the disk mounting portion of the disk tray, and an outer periphery of the surface of the disk mounting portion. A wind inlet that faces the gap at the portion, and a wind outlet that is formed by an end portion of the wind guide path and that opens toward the radially inner side of the disk mounting portion at the rear outer peripheral portion of the disk mounting portion. I have . For this reason, since the ventilation path is formed directly with respect to the disc tray, there is an advantage that the ventilation path can be formed without increasing the number of parts.

In the present invention, on the back surface of the disk mounting portion of the disk tray, the start portion faces the air outlet, the end portion is located at the lip of the opening, and the center line thereof is the disk mounting portion. A grooved air passage is provided that extends straight in the radial direction and has a shape that becomes narrower at a position closer to the end thereof. For this reason, the grooved air passage is useful for rectifying the rotating air guided from the front surface side to the back surface side of the disk mounting portion.

  According to the present invention, after the disk held in the chucking mechanism is rotated, the rotating air induced in the gap between the disk and the disk tray is guided to the back side of the disk tray, and then Since the back surface of the disk tray is turned and oriented at the motor installation location, it is possible to efficiently suppress the temperature rise of the motor with the rotating air without applying an extra load to the motor. Therefore, even if an inexpensive motor is used, the durability is not impaired, and as a result, the disk device can be provided at a low cost.

FIG. 1 is a schematic plan view showing the surface of a disk tray 1 employed in the disk apparatus according to the present invention, FIG. 2 is a schematic bottom view showing the back surface of the disk tray 1, and FIG. 3 is III-III in FIG. 4 is a schematic enlarged sectional view of a portion along the line, FIG. 4 is a schematic perspective view showing a ventilation path forming member 9 separate from the disk tray 1, and FIG. FIG. 6 is a schematic plan view showing the disc tray 1 attached to the frame 2 of the disc device.

As shown in FIG. 6, the disc tray 1 is attached to the frame 2 of the disc device. Due to the action of a loading mechanism (not shown), the loading position shown in FIG. 6 and the unloading position protruding to the front side of the frame 2 Be moved in and out. The disc tray 1 is concentrically formed with a large-diameter disk mounting portion 12 formed of a recess and a small-diameter disk mounting portion 15 formed of a recess corresponding to two types of disks. Has been. In addition, an opening 17 is provided at the center of the disk mounting portions 12 and 15. Then, the disc (not shown) placed on one of the two disc placement portions 12 and 15 at the unloading position of the disc tray 1 is pulled to the loading position shown in FIG. Is carried into the set position. In addition, in FIG. 6, the ventilation path mentioned later is abbreviate | omitting illustration.

  In addition, as shown in FIG. 5, the turntable 4 directly connected to the rotating shaft 31 of the motor 3 is disposed on one side of the set position of the disk D, whereas on the other side, A clamper 5 attached to a horizontal member 21 attached to the frame 2 shown in FIG. 6 is provided. These turntable 4 and clamper 5 form a chucking element of a chucking mechanism 6 for chucking and rotating the disk D. Reference numeral 33 denotes a movable frame on which the motor 3 is mounted.

  In this disc apparatus, the movable frame 33 operates in synchronization with the operation of placing the disc D on the disc tray 1 and carrying it into the set position. Through the operation of the movable frame 33, the turn as a chucking element is operated. When the table 4 moves forward and passes through the opening 17 of the disc tray 1, the disc D placed on the disc tray 1 is transferred to the turntable 4, and the disc D is lifted from the disc tray 1 and the other party's chat The clamper 5 as a king element clamps the disk D with the turntable 4 as shown in FIG. Thus, the disk D held at the position lifted from the disk tray 1 by the chucking mechanism 6 composed of the turntable 4 and the clamper 5 is rotated together with the chucking mechanism 6 by the motor 3 and is not shown during the rotation. The recording surface is scanned by the action of the optical pickup, and information is recorded or reproduced. Further, when the movable frame 33 is operated after the motor 3 is stopped and the turntable 4 is moved back, the holding state of the disk D due to the cooperation of the turntable 4 and the clamper 5 is released, and then the turntable 4. Passes through the opening 17 so that the disk D is transferred to the disk tray 1 and then the turntable 4 returns to the original position.

  In the disc tray 1, the ventilation path 7 is provided at a plurality of positions on the outer peripheral portion of the large-diameter disc mounting portion 12 at equal intervals. As shown in a partially enlarged view in FIG. 5, each of these ventilation paths 7 includes a wind guide path 71 that penetrates the disc tray 1 in the thickness direction at the outer peripheral portion of the large-diameter disc mounting portion 12, and this A wind inlet 72 formed by the beginning of the wind guide path 71 and facing the gap S formed between the disk D and the disk tray 1 at the outer periphery of the surface of the disk mounting portion 12, and the end of the wind guide path 71 And an air outlet 73 that opens toward the radially inner side of the disk mounting portion 12 at the outer peripheral portion of the back surface of the disk mounting portion 12.

As described above, when the ventilation path 7 having the above-described configuration is provided on the outer periphery of the disk mounting portion 12 of the disk tray 1, the motor 3 is rotationally driven together with the chucking mechanism 6 as shown in FIG. 5. As the disk D rotates, the rotating wind induced in the gap S between the disk D and the disk mounting portion 12 is guided by the centrifugal action or the like from the wind inlet 72 of the ventilation path 7 as indicated by an arrow a. After being introduced into the path 71, the air is blown out from the air outlet 73 along the back surface of the disk mounting portion 12 in the direction of the back surface. For this reason, the rotating wind is oriented at the installation location of the motor 3, whereby the rotating wind comes into contact with the motor 3 to cool the motor 3, thereby suppressing the temperature rise. Further, in this embodiment, since the ventilation path 7 is provided at a plurality of positions on the outer periphery of the disk mounting portion 12, the rotating air comes into contact with the entire periphery of the motor 3 and the temperature rise of the motor 3 is efficiently suppressed. The

In particular, in this embodiment, the following configuration is further added to the above configuration. That is, the start portion faces the air outlet 73 of each ventilation path 7 and the end portion is located at the mouth edge of the opening 17 at a plurality of circumferential positions on the back surface of the large disk mounting portion 12 of the disk tray 1. A grooved air passage 8 whose center line L extends straight in the radial direction of the disk mounting portion 12 is provided. For this reason, when the rotating air guided from the front surface side to the back surface side of the disk mounting portion 12 flows through the grooved air passage 8 as indicated by the arrow b while scooping the back surface of the disk mounting portion 12, the rotating air is The current is rectified in the radial direction of the disk mounting portion 12.

  As described above, in this embodiment, the rotational air induced in the gap S between the disk D and the disk mounting part 12 as the disk D rotates is caused to flow from the disk mounting part 12 by the ventilation path 7. Since the rear surface of the motor 3 is guided and oriented at the installation location of the motor 3, even if an inexpensive spindle motor is used as the motor 3, the motor 3 is efficiently cooled by the rotating air. Temperature rise is suppressed. For this reason, the situation in which the motor 3 is overheated and the durability is impaired is less likely to occur.

  In the embodiment described above, the example in which the rotating air induced when the disk D corresponding to the large-diameter disk mounting portion 12 is rotated is used for cooling the motor 3 is described. Similarly, when a disk (not shown) corresponding to the disk mounting portion 15 is rotated, the rotating air is used for cooling the motor 3 via the ventilation path 7.

Moreover, although the said embodiment demonstrated the example which formed the ventilation path 7 in the disk tray 1 directly, the ventilation path formation member 9 shown in FIG. 4 was manufactured separately from the disk tray 1, and the ventilation path formation member is shown. 9 can be attached to a plurality of locations around the disc mounting portion 12 of the disc tray 1. In FIG. 4, elements corresponding to those described in FIG. 5 are assigned the same reference numerals, and detailed description thereof is omitted.

It is the schematic plan view which showed the surface of the disk tray employ | adopted as the disk apparatus based on this invention. It is the schematic bottom view which showed the back surface of the disk tray. It is a general | schematic expanded sectional view of the part which follows the III-III line of FIG. It is the schematic perspective view which showed the ventilation path formation member. It is an operation explanatory view. It is a schematic plan view showing a disc tray attached to the frame of the disc device.

D disk 1 disk tray 3 motor 4 turntable 5 clamper 6 chucking mechanism 7 ventilation path 8 grooved air path 12 disk mounting portion 17 opening 31 rotating shaft 71 wind guide path 72 wind inlet 73 wind outlet L grooved air path Center line

Claims (1)

A position where the disk placed on the disk mounting portion of the disk tray and carried into the set position is lifted from the disk tray by the chucking mechanism connected to the rotating shaft of the motor as the rotation drive source at the set position. In the disk device in which the recording surface of the disk held optically and rotated with the chucking mechanism by the motor is optically scanned,
The chucking mechanism is a turntable as a reciprocating chucking element that is directly connected to the rotation shaft of the motor, and the turntable moves forward from the disk mounting portion of the disk tray to the turntable. And a clamper as a chucking element for clamping the disc to the turntable, and the disc tray is positioned at the center of the disc mounting portion to pass the turntable during reciprocation. An opening to allow,
Rotating air induced in the gap between the disk and the disk mounting portion of the disk tray as the disk rotates is guided from the front surface side to the back surface side of the disk mounting portion, and then the disk mounting A ventilation path that blows out in the direction of turning the back surface of the disc and directs it to the installation location of the motor is provided at a plurality of locations on the outer periphery of the disc placement portion of the disc tray, and when the disc is chucked by the chucking mechanism. The motor is positioned at a position where the rotating air directed to the installation location of the motor is contacted by the ventilation path,
The ventilation path is formed by a wind guide path that penetrates the disk tray at an outer peripheral portion of the disk mounting portion of the disk tray, and a gap at the outer peripheral portion of the surface of the disk mounting portion. And a wind outlet that is formed by an end portion of the wind guide path and opens toward the radially inner side of the disk mounting portion at the outer periphery of the back surface of the disk mounting portion. On the back surface of the disk mounting portion, the start portion faces the air outlet, the end portion is located at the lip of the opening, its center line extends straight in the radial direction of the disk mounting portion, and A disk device comprising a grooved air passage having a shape that becomes narrower at a portion closer to the end thereof.

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