JP2011146106A - Disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk drive having a thin housing, manufactured at low cost and configured to reproduce data in the disk without delay. <P>SOLUTION: The disk drive 1 has a housing 2 to insert a recording disk 3, a traverse unit 4 to reproduce data in the recording disk 3, and a rotary shaft 5a supporting the traverse unit 4 to turn around the shaft and to turn the traverse unit 4 toward the bottom surface 2a of the housing 2 when ejecting the recording disk 3 inserted into the housing 2 to the outside of the housing 2. The part of the traverse unit 4 in contact with the bottom surface 2a is cut off so that the lower end of the traverse unit 4 is positioned above the bottom surface 2a of the housing 2 after turning by the shaft 5a. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a disk drive device.

  2. Description of the Related Art Conventionally, a disk drive device that performs a reproducing operation on a recording disk such as a CD (Compact Disc), a DVD (Digital Versatile Disc), and a BD (registered trademark: Blu-ray Disc) is known.

Such a disk drive device includes a reproducing unit for performing a reproducing operation of a recording disk via an optical pickup, and a rotating unit that pivotally supports the reproducing unit so as to be rotatable about an axis. When performing a reproducing operation of the recording disk, the reproducing unit moves to the reading position of the recording disk and performs the reproducing operation of the recording disk. On the other hand, when the recording disk is ejected to the outside of the casing, the reproducing unit is rotated toward the bottom surface of the casing by the rotating unit, thereby hindering the movement of the recording disk toward the outside of the casing. It is configured not to.
However, according to such a disk drive device, when the reproducing unit rotates toward the bottom surface of the casing, the lower end of the reproducing unit and the bottom surface of the casing do not come into contact with each other and wear of the material does not occur. The thickness (length in the height direction) of the casing must be designed to be sufficiently large, and there is a problem that the casing cannot be thinned.

  Therefore, the optical pickup support member carrying the optical pickup is disposed at the lowermost end of the reproducing unit, and the optical pickup support member is disposed at a standby position close to the rotating shaft in a state where the recording disk exists outside the housing. A disk drive device configured as described above is known (for example, see Patent Document 1).

JP 2006-236471 A

  According to the disk drive device described in Patent Document 1, when the reproducing unit is rotated toward the bottom surface of the housing by the rotating unit, the optical pickup support member is disposed at a standby position close to the rotating shaft. So as to move upward. That is, since the lower end position of the reproduction unit when the reproduction unit is rotated toward the bottom surface can be increased, the casing can be thinned.

  However, in the disk drive device described in Patent Document 1, in order to move the optical pickup support member to the standby position, a sensor or the like for detecting whether or not the optical pickup support member is at the standby position is separately required. There was a production cost problem. Further, in the disk drive device described in Patent Document 1, when performing the reproducing operation of the recording disk, the optical pickup support member at the standby position is placed near the innermost peripheral position of the recording disk (in the movement range of the optical pickup support member). Since it is necessary to start reading the recording disk after moving to the position farthest from the position), there is a problem that it takes time to start the reproducing operation.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a disk drive device that can be thinned, is excellent in production cost, and performs a reproducing operation of a recording disk without delay.

  In order to solve the above-described problems, the invention according to claim 1 is configured such that a housing into which a recording disk is inserted, and the recording disk is engaged with the recording disk in a state in which the recording disk is inserted into the housing. A reproducing unit that performs a reproducing operation on the recording disk, and when the recording disk inserted in the housing is ejected to the outside of the housing, the reproducing unit is rotated toward the bottom surface of the housing. A portion that contacts the bottom surface of the housing of the housing such that a lower end of the playback portion after the rotation by the rotating portion is positioned above the bottom surface of the housing. Characterized by excision.

  Therefore, the present invention can provide a disk drive device that can be thinned, has excellent production costs, and performs recording disk reproduction without delay.

It is a figure which shows typically the state which looked at the internal structure of the disc drive apparatus based on this invention from the side. It is a figure which shows the state which rotated the traverse unit shown in FIG. 1 toward the bottom face of a housing | casing. It is a figure which shows typically the state which looked at the internal structure of the disc drive apparatus based on this invention from upper direction. FIG. 3 is a diagram showing a state before the contact portion of the traverse unit with the housing in the disk drive device shown in FIG. 2 is cut off. FIG. 3 is a diagram showing a state in which another excision portion is provided in the traverse unit in the disk drive device shown in FIG. 2.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. However, the scope of the invention is not limited to the illustrated examples. In the following description, as shown in FIGS. 1 and 3, the horizontal direction when the disk drive device 1 is viewed from the front when installed is the X-axis direction and the front-rear direction (recording when the recording disk 3 is inserted). The movement direction of the disk 3) is defined as the Y-axis direction, and the vertical direction (height direction) of the disk drive apparatus when viewed from the front when the disk drive apparatus 1 is installed is defined as the Z-axis direction.

The disk drive device 1 according to the present embodiment includes a substantially rectangular parallelepiped housing 2.
An opening (not shown) through which the recording disk 3 is inserted is formed at the front end of the housing 2. Further, behind the opening, a roller (not shown) is provided in parallel with the opening as an example of means for moving the recording disk 3 back and forth (Y-axis direction). That is, the housing 2 can insert and eject the recording disk 3 by the rotating action of the roller.

  The recording disk 3 is a variety of optical disks such as CD, DVD, and BD, and includes an information recording surface on the back side where information can be recorded or read. When the recording disk 3 is disposed in the vicinity of the opening of the housing 2, a user operates an operation unit (not shown) such as a remote controller or an operation panel provided on the front surface of the housing 2. As a result, it is inserted into the housing 2 through the action of the roller. On the other hand, the inserted recording disk 3 is discharged to the outside of the housing 2 by the action of a roller. In the following, the recording disk 3 is inserted into the housing 2 as shown in FIG. 1, and the recording disk 3 is ejected to the outside of the housing 2 as shown in FIG. Set to discharged state.

  As shown in FIGS. 1 to 3, the housing 2 is provided at each end of the traverse unit 10 disposed on the lower surface of the recording disk 3 in the inserted state and the traverse unit 10 in the XY plan view. The insulator 4 and the frame 5 on which the traverse unit 10 is placed are disposed.

As shown in FIG. 3, the insulator 4 is a substantially cylindrical member provided at each of the four end positions of the chassis 11 of the traverse unit 10 in the XY plan view. As shown in FIGS. 1 and 2, the insulator 4 has a small-diameter portion having a smaller diameter than other portions at the center position in the Z-axis direction. The small diameter portion is fitted into holes (not shown) formed at four end positions of the chassis 11 in the XY plan view. Therefore, the insulator 4 is attached to the chassis 11 by fitting the small diameter portion into the hole of the chassis 11.
In addition, a boss on a cylinder having a female screw groove of a frame 5 described later is passed through the insulator 4 at the center, and the male screw 4a and the female screw groove are screwed together. That is, the chassis 11 (and the traverse unit 10) is attached to the frame 5 by tightening the male screw 4a in the female screw groove. The insulator 4 is formed of an elastically deformable resin material or the like, and can attenuate the vibration caused by the traverse unit 10 in a state where the traverse unit 10 is attached to the frame 5.

The frame 5 is disposed below the traverse unit 10. In addition, the frame 5 includes female screw grooves that are screwed into the male screws 4a at respective positions corresponding to the planar position where the insulator 4 is provided.
A rotation shaft 5 a extending along the X-axis direction is provided at the rear end of the frame 5. The turning shaft 5a is turned around the X axis in accordance with the rotational force applied from a motor (not shown), whereby the traverse unit 10 attached to the frame 5 and the frame 5 is shown in r1 shown in FIGS. Turn in the direction or r2.
Further, the rotation shaft 5a is configured to rotate in conjunction with the movement of the recording disk 3 in the front-rear direction. Specifically, when the recording disk 3 in the inserted state shown in FIG. 1 moves forward toward the outside of the housing 2, the rotating shaft 5a rotates in the r1 direction, as shown in FIG. Then, the traverse unit 10 is tilted toward the bottom surface 2 a of the housing 2 to secure a moving path of the recording disk 3. That is, the rotation shaft 5 a rotates so that the traverse unit 10 that contacts the lower surface of the recording disk 3 shown in FIG. 1 does not hinder the forward movement of the recording disk 3. On the other hand, when the recording disk 3 moves rearward toward the inside of the housing 2 from the ejected state shown in FIG. 2, the rotating shaft 5a rotates in the r2 direction, and as shown in FIG. 10 is operated to be parallel to the recording disk 3.
In addition, the part enclosed with the broken line in FIG. 3 shows that it is a location where the hole was formed in the back surface side of the flame | frame 5. As shown in FIG.

As shown in FIGS. 1 to 3, the traverse unit 10 includes a chassis 11 disposed above the frame 5, a turntable 12 disposed so as to be engaged with the recording disk 3 in an inserted state, and the turntable 12. And a pickup unit 20 disposed behind the turntable 12, and a main guide member 14 and a sub guide member 15 fixed to the chassis 11.
The traverse unit 10 performs the reproducing operation of the recording disk 3 based on the reading operation of the information recording surface of the recording disk 3 by the pickup unit 20.

As shown in FIG. 3, the chassis 11 has a rectangular shape in the XY plan view. The chassis 11 has a hole (not shown) for mounting the insulator 4 and is supported by the frame 5 via the insulator 4.
The turntable 12 is recorded by a clamper (not shown) disposed above the turntable 12 pressing the recording disk 3 inserted into the housing 2 downward (toward the turntable 12). Engage with the disc 3 (fit with a hole formed in the center of the recording disc 3). The turntable 12 holds the engaged recording disk 3 so as to be rotatable about the Z axis.
The motor 13 is, for example, a spindle motor fixed to the upper surface of the chassis 11. The motor 13 includes a rotation shaft 13a in the Z-axis direction, and the turntable 12 is attached to the tip of the rotation shaft 13a. Therefore, when the motor 13 rotates about the Z axis, the recording disk 3 held on the turntable 12 rotates about the Z axis.

The main guide member 14 is a guide rail that is fixed to the chassis 11 and extends in the Y-axis direction. The sub guide member 15 is a guide rail extending in the Y-axis direction.
The main guide member 14 and the sub guide member 15 are inserted into a main guide member receiving portion 21a and a sub guide member receiving portion 21b, which will be described later, and support the left and right sides of the pickup unit 20. The main guide member 14 and the sub guide member 15 are formed in a substantially cylindrical shape, and slide the pickup unit 20 along the main guide member 14 and the sub guide member 15. That is, the main guide member 14 and the sub guide member 15 can move (guide) the pickup unit 20 in the Y-axis direction.

  The pickup unit 20 includes an optical pickup support member 21 provided between the main guide member 14 and the sub guide member 15 and an optical pickup 22 supported by the optical pickup support member 21.

The optical pickup 22 is disposed on the optical pickup support member 21. Further, the optical pickup 22 includes an objective lens 22a in a direction facing the information recording surface of the recording disk 3 in the inserted state. Then, the optical pickup 22 collects the laser light applied to the recording disk 3 from a light source (not shown) on the information recording surface of the recording disk 3 by the objective lens 22a, thereby reading the signal. I do.
Note that the reading operation of the optical pickup 22 is started from the innermost circumferential position of the recording disk 3. Therefore, when the optical pickup 22 does not perform the reading operation, the optical pickup support member 21 described later moves in the Y-axis direction, so that the pickup unit 20 is located at a position adjacent to the turntable 12 as shown in FIG. stand by.

The optical pickup support member 21 is disposed on the chassis 11 and supports the optical pickup 22 on the top. A main guide member receiving portion 21 a and a sub guide member receiving portion 21 b are provided at the left and right ends of the optical pickup support member 21.
The main guide member receiving portion 21a and the sub guide member receiving portion 21b include circular holes (not shown) through which the main guide member 14 and the sub guide member 15 are inserted, respectively. Further, rack teeth (not shown) are formed on the right side surface of the main guide member receiving portion 21a. Therefore, the pickup unit 20 is configured to be movable in the Y-axis direction along the guide member 14 and the sub guide member 15 via a pinion gear meshing with the rack teeth, a motor for applying a driving force to the pinion gear, or the like. ing.

As shown in FIG. 2, the lower portion 21 c of the optical pickup support member 21 is positioned at the lowermost end of the traverse unit 10 when the traverse unit 10 is tilted toward the bottom surface 2 a of the housing 2. And the lower part 21c consists of a shape which cut | disconnected the cut part 21e along the cutting line L from the rectangular-shaped rectangular part 21d by YZ planar view shown in FIG.
Here, the rectangular portion 21 d has a shape used as the lower portion 21 c of the conventional optical pickup support member 21. That is, when the lower part 21c is formed like the rectangular part 21d, when the traverse unit 10 is rotated from the insertion state shown in FIG. The part which overlaps with the bottom face 2a of 21e contacts with the bottom face 2a. Therefore, as shown in FIG. 2, the lower end 21c is formed in a shape in which a cut portion 21e, which is a portion close to the bottom surface 2a of the housing 2 of the optical pickup support member 21, is cut, so that the lowermost end of the traverse unit 10 is Since it comes to be located above the bottom face 2a, the traverse unit 10 can avoid contact (interference) with the housing 2. For this reason, inconveniences caused by contact, for example, displacement of the pickup unit 20 and wear of the material are eliminated.
Further, the bottom surface 21f of the lower portion 21c obtained by cutting the cut portion 21e is formed to be parallel to the bottom surface 2a of the housing 2 as shown in FIG. Therefore, when the traverse unit 10 is tilted toward the bottom surface 2a, the gap between the lower portion 21c and the bottom surface 2a is the same over the entire bottom surface 21f of the lower portion 21c. Becomes easier.

  If contact with the bottom surface 2a can be avoided, the cut portion 21e is appropriately provided depending on the dimensions of the traverse unit 10, the rotation angle of the rotation shaft 5a, the thickness H of the housing 2, and the like. Can be changed. For example, as shown in FIG. 5, the cut line L may be provided below the position shown in FIG. 2, and the cut portion 21e may be a portion that should be cut at a minimum in order to avoid contact.

  Next, the operation of the disk drive device 1 in this embodiment will be described.

When performing the reproducing operation of the recording disk 3, the recording disk 3 is moved by the action of the roller automatically or through the operation of the operation unit by the user in a state where the recording disk 3 is arranged in the vicinity of the opening of the housing 2. It moves toward the rear (inside the housing 2) and is inserted into the housing 2.
Then, in conjunction with the movement of the recording disk 3, the rotating shaft 5a rotates in the r2 direction, and the traverse unit 10 tilts toward the bottom surface 2a of the housing 2 shown in FIG. It rotates to the position where it contacts the lower surface of the. Further, the recording disk 3 and the turntable 12 are engaged by the pressing force applied to the recording disk 3 by the clamper, and the insertion state shown in FIG. 1 is formed.
Next, the turntable 12 that holds the recording disk 3 in the inserted state is rotated around the Z axis by the motor 13, and the pickup unit 20 is guided by the main guide member 14 and the sub guide member 15 to move in the Y axis direction. . During the movement, the pickup unit 20 performs a signal reading operation from a predetermined position on the information recording surface of the recording disk 3, so that the traverse unit 10 performs a reproducing operation of the recording disk 3.

On the other hand, when the recording disk 3 is replaced, the pickup unit 20 moves forward (toward the innermost peripheral position of the recording disk 3) by operating the operation unit (pressing an eject button or the like) by the user. Thereafter, the rotation shaft 5a rotates in the r1 direction. Then, the traverse unit 10 is inclined toward the bottom surface 2a of the housing 2 by the rotation of the rotation shaft 5a, and the movement path of the recording disk 3 is secured. At this time, the lower portion 21c of the optical pickup support member 21 positioned at the lowermost end of the traverse unit 10 is formed in a shape in which the cutout portion 21e is cut out, so that the lower portion 21c is spaced upward from the bottom surface 2a of the housing 2. Stops after rotating.
Then, in conjunction with the rotation of the rotation shaft 5a, the recording disk 3 moves forward, and the recording disk 3 is ejected to the outside of the housing 2, whereby the ejection state shown in FIG. The recording disk 3 can be exchanged.

As described above, the disk drive device 1 according to the present embodiment has a shape in which the cut portion 21e located at the lowermost end of the traverse unit 10 is cut. Therefore, the traverse unit 10 can avoid contact with the bottom surface 2a while being tilted toward the bottom surface 2a of the housing 2. That is, unlike the conventional case, it is not necessary to design the thickness H of the housing 2 to be large so that the position corresponding to the cut portion 21e does not come into contact, and thus the housing 2 can be thinned.
In the disk drive device 1, when the traverse unit 10 is tilted toward the bottom surface 2 a of the housing 2, the optical pickup support member 21 is moved to a position close to the rotation shaft 5 a, and the lower end of the traverse unit 10 is moved. The position need not be high. Therefore, the disk drive device 1 needs to be provided with a sensor or the like for detecting the adjacent position, or needs to be moved from the adjacent position to the innermost peripheral position of the recording disk 3 during the reproducing operation of the recording disk 3. No.
Therefore, the disk drive device 1 can reduce the thickness of the housing 2, is excellent in production cost, and can perform the reproducing operation of the recording disk 3 without delay.

  The cut portion 21e is provided in the lower portion 21c of the optical pickup support member 21 located at the lowest end of the traverse unit 10 when the traverse unit 10 is tilted toward the bottom surface 2a. That is, since the contact with the bottom surface 2a of the traverse unit 10 is avoided only by cutting the cut-out portion 21e that is a portion near the bottom surface 2a of the housing 2 of the optical pickup support member 21, the disk drive device 1 Compared to the case where the thickness H of the housing 2 is designed to be large, it can be manufactured at a low cost.

  Further, the bottom surface 21 f of the lower portion 21 c obtained by cutting the cut portion 21 e is formed so as to be parallel to the bottom surface 2 a of the housing 2. Therefore, when the traverse unit 10 is tilted toward the bottom surface 2a, the gap between the lower portion 21c and the bottom surface 2a is the same over the entire bottom surface 21f of the lower portion 21c. Becomes easier.

The description in the above embodiment is an example of a suitable disk drive device according to the present invention, and the present invention is not limited to this. Further, the detailed configuration and detailed operation of each part constituting the disk drive device in the above embodiment can be changed as appropriate without departing from the spirit of the present invention.
For example, in the above embodiment, in the disk drive device 1, the lower portion 21 c of the optical pickup support member 21 is positioned at the lowermost end of the traverse unit 10 when the traverse unit 10 is tilted toward the bottom surface 2 a of the housing 2. However, when a part other than the optical pickup support member 21 is positioned at the lowermost end, the part of contact with the bottom surface 2a of the part may be cut off. In the above-described embodiment, the slot 2 disk drive device inserts / discharges the recording disk 3 into / from the housing 2 by moving the recording disk 3 in the Y-axis direction by the roller of the casing 2. However, it may be a disk drive device using a tray system having a tray on which the recording disk 3 is mounted and movable to the inside and outside of the housing 2.
In the above embodiment, the traverse unit 10 is configured to perform the reproducing operation of the recording disk 3 based on the reading operation of the information recording surface of the recording disk 3 by the pickup unit 20. Of course, the recording operation of the recording disk 3 may be performed based on the writing operation on the information recording surface of the recording disk 3.

DESCRIPTION OF SYMBOLS 1 Disc drive apparatus 2 Housing | casing 2a Bottom surface 3 Recording disk 5a Rotating shaft (rotating part)
10 Traverse unit (reproduction unit)
20 pickup unit 21 optical pickup support member 21c lower part 21f bottom face 22 optical pickup

Claims (3)

A housing into which the recording disk is inserted;
A reproducing unit that engages with the recording disk and performs a reproducing operation on the recording disk in a state where the recording disk is inserted into the housing;
A rotating unit that rotates the reproducing unit toward the bottom surface of the case when the recording disk inserted in the case is ejected to the outside of the case;
With
The disc, wherein a portion of the reproducing unit that contacts the bottom surface of the casing is cut out so that a lower end of the reproducing unit rotated by the rotating unit is positioned above the bottom surface of the casing. Drive device. The disk drive device according to claim 1,
The playback unit
An optical pickup that performs an information signal reading operation on an information recording surface of the recording disk in a state where the recording disk is inserted into the housing;
An optical pickup supporting member that supports the optical pickup and is positioned at a lower end of the reproducing unit after being rotated by the rotating unit;
With
2. A disk drive device according to claim 1, wherein the optical pickup support member has a shape in which a portion of the optical pickup support member adjacent to the bottom surface of the housing is cut out. The disk drive device according to claim 2,
The disk drive device according to claim 1, wherein a bottom surface of the rotated optical pickup support member having a shape obtained by cutting away the adjacent portion is formed in parallel with the bottom surface of the housing.

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