JP2005327356A - Disk warp suppression mechanism in disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly reproduce a disk by suppressing the warps of a disk when a label is stuck on the disk and the disk warps by the temperature. <P>SOLUTION: One roller 6 is disposed on the main part 5 of the clamp 4 to suppress the warp of the disk 2, and another roller 9 is disposed on a projection shaft 10 projecting from the main part of the pickup 8 which supports the motor 7 driving the turntable 3. A moving shaft 16 projecting from the main part of the pickup is fitted in a virtical groove 15a on the guide plate 15 having a rack 14 to engage with the pinion 13 of a gear train 12 driven by the drive motor 11. Loading the disk on the disk tray 1, and by moving the rack to one side to raise the moving shaft 16 fitted in the groove to move the roller 9 upward on the projection shaft 10 on the main part 8 of the pickup, the edge of the disk 2 is sandwiched rotatably in the groove formed between the rollers 9 and 6 to regulate the warp of the disk 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  When the disc placed on the upper side of the disc tray is set while being sandwiched between the turntable and the clamper, the disc and the label etc. The present invention relates to a disk warpage suppressing structure in a disk device and a disk warping suppressing structure in a disk device which prevent warping caused by a difference in temperature shrinkage.

  Conventionally, as shown in FIG. 5, when a label or the like is attached to the disk 103 by being set on the disk tray 101 of the disk device and rotated by the turntable 102, the disk 103 is warped due to a difference in temperature shrinkage rate. There was a problem.

  The first prior art is shown in FIGS. 6 (a) and 6 (b). As shown in FIGS. 6A and 6B, this conventional optical disc clamper mechanism includes a turntable 204 on which an optical disc 201 is mounted, a spindle motor 205 that rotates the turntable 204, and the optical disc 201 as a turntable 204. And a step member 204a that corrects warpage of the optical disc 201. (For example, refer to Patent Document 1).

  However, in this case, there is a problem that the chucking mechanism is not used, but the chucking is performed by hand and the outer periphery is not completely warped.

  A second prior art is shown in FIG. As shown in FIG. 7, this conventional optical disc apparatus includes a turntable 312 on which an optical disc 313 is placed, a chuck that presses the optical disc placed on the turntable against the turntable surface from above, A spindle motor 311 for rotationally driving the turntable, a drive control device for rotationally driving the spindle motor, a mechanical deck 315 for supporting the spindle motor, and a signal recording surface of the optical disk supported by the mechanical deck movably in the radial direction of the optical disk. A flat disc stabilizer that reduces the radial skew of the optical disc by contacting the surface of the optical disc placed on the turntable in the optical disc apparatus 310, which has an optical pickup 314 that records or reproduces an information signal on the optical disc 316 will be provided To constitute the optical disc apparatus 310. (For example, refer to Patent Document 2).

However, in this case, since the disk stabilizer 316 is placed on the upper surface of the optical disk 313, there is a problem that the load increases and the load of the drive motor that rotates the optical disk increases.
JP-A-10-124967 JP-A-8-167272

  The present invention has been made in view of the above-described conventional problems, and when warping occurs due to temperature when a label or the like is applied to the disk, the warping of the disk can be suppressed and smooth. An object of the present invention is to provide a disc warpage suppressing structure in a disc device capable of performing reproduction.

  The present invention has been proposed in order to solve the above-mentioned problems. The invention according to claim 1 is that the disk placed on the upper side of the disk tray is set in a state where the disk is sandwiched between the turntable and the clamper. In the disk warpage suppressing structure in the disk device that prevents warping caused by the difference in temperature shrinkage between the disk and the label when the label is attached to the disk. One roller for suppressing the warpage of the disk is disposed at a position facing the periphery of the disk in the main body portion of the clamper, and faces the periphery of the disk on the upper surface of the pickup body that supports the drive motor of the turntable. The other roller is arranged on the protruding shaft at a location, and meshes with the pinion of the gear group driven by another drive motor A moving shaft projecting from the pickup main body is fitted in a diagonally upward and downward groove formed in a guide plate-like body provided with a hook in the longitudinal direction, and the disc is set on the disc tray. When the rack is moved to one side and the moving shaft fitted in the moving groove is moved obliquely upward, the other roller on the protruding shaft on the pickup body is moved obliquely upward. The disk is configured such that the peripheral edge of the disk is sandwiched between the other roller and the one roller in a rotatable state so that the warpage of the disk is suppressed by the peripheral groove of these rollers. It is said.

  When the disc placed on the upper side of the disc tray is set in a state sandwiched between the turntable and the clamper and the label is attached to the disc, the invention according to claim 2 In the disc warpage suppressing structure in the disc device that prevents warping caused by the difference in shrinkage rate of temperature between the disc and the label, a roller having a circumferential groove is disposed in the vicinity of the peripheral edge of the disc, This roller is configured to suppress warping of the disk.

  According to a third aspect of the present invention, the roller is attached to the tip of a plate-like body pivotally mounted substantially at the center, and the lower end of the plate-like body is formed in the guide plate-like body. The shaft portion is movably fitted in the obliquely upward and downward groove portion, and the guide plate-like body is provided with a rack that engages with a pinion of a gear group driven by a drive motor in the longitudinal direction. By the horizontal movement of the guide plate-like body, the shaft portion at the lower end of the plate-like body is rotated obliquely upward along the vertical groove portion, and the rotation of the plate-like body causes the plate-like body to rotate. The circumferential groove of the roller at the tip is rotatably fitted to the peripheral edge of the disk, thereby suppressing the warpage of the disk.

  According to the first aspect of the present invention, even when the label is attached to the disk placed on the upper side of the disk tray and rotatably held by the turntable and the clamper, the disk is disposed on the main body of the clamper. When the disc is rotated between the roller on the other side and the other roller on the protruding shaft of the pickup body, the disc is warped due to temperature when a label is attached to the disc. Can be suppressed and smooth reproduction can be performed.

  According to the second aspect of the present invention, even when the label or the like is attached to the disk placed on the upper side of the disk tray and rotatably held by the turntable and the clamper, the roller is brought close to the periphery of the disk. By positioning the disk in the circumferential groove of this roller so that it can rotate, the warp of this disk can be suppressed when the disk is warped due to temperature when a label is applied. Smooth playback can be performed.

  According to the third aspect of the present invention, the roller at the tip of the plate-like member rotates obliquely upward along the obliquely inclined up and down groove portion of the guide plate-like member, and the circumferential groove of this roller is the peripheral edge of the disc. Thus, when the disc is warped due to the temperature when a label or the like is attached to the disc, the warpage of the disc can be suppressed and smooth reproduction can be performed.

  Embodiments of a disk warpage suppressing structure in a disk device according to the present invention will be described below with reference to the drawings.

  FIG. 1 shows a disc warpage suppressing structure in the disc apparatus according to the first embodiment of the present invention. FIG. 1A is a schematic sectional front view showing a state in which the disc warpage is suppressed, and FIG. FIG. 2 is a schematic sectional front view of the moving mechanism, and FIG.

  As shown in FIG. 1A, the disc warpage suppressing structure in the disc apparatus of the first embodiment is such that the disc 2 placed on the upper side of the disc tray 1 is sandwiched between the turntable 3 and the clamper 4. It is set with. When a label (not shown) or the like is attached to the disk 2, warping caused by a difference in temperature shrinkage between the disk 2 and the label is prevented.

  One roller 6 for suppressing warpage of the disk 2 is disposed at a position facing the periphery of the disk 2 in the main body 5 of the clamper 4. The other roller 9 is disposed on the protruding shaft 10 at a location facing the periphery of the disk 2 on the upper surface of the pickup body 8 that supports the drive motor 7 of the turntable 3. Further, as shown in FIG. 1 (b), a diagonally upward and downward direction is formed in a guide plate-like body 15 provided with a rack 14 which is engaged with a pinion 13 of a gear group 12 driven by another drive motor 11 in the longitudinal direction. The moving shaft 16 projecting from the pickup body 8 is fitted in the groove portion 15a.

  As shown in FIG. 2, when the disk 2 is set on the disk tray 1, the rack 14 is moved to one side, and the moving shaft 16 fitted in the moving groove 15a is moved obliquely upward. The other roller 9 on the protruding shaft 10 on the pickup body 8 is moved obliquely upward. As shown in FIG. 1A, the periphery of the disk 2 is sandwiched between the other roller 9 and the one roller 6 in a rotatable state. Thus, the warpage of the disk 2 is suppressed by the circumferential grooves of these rollers 6 and 9. Note that the rollers 6 and 9 are formed in a split state, and when combined, they form a single roller.

  Therefore, according to the first embodiment, even when a label or the like is attached to the disk 2 placed on the upper side of the disk tray 1 and rotatably held by the turntable 3 and the clamper 4, the clamper 4 When a label or the like is attached to the disk 2 by sandwiching the disk 2 in a rotatable state between the roller 6 on one side disposed in the main body 5 and the other roller 9 on the protruding shaft 10 of the pickup body 8 When the warp occurs due to temperature, the warp of the disk 2 can be suppressed and smooth reproduction can be performed.

  FIG. 3 is a schematic front view showing a state in which the disc warpage suppression in the disc warpage suppression structure of the second embodiment is released, and FIG. 4 is a schematic front view of the device in which the disc warpage is suppressed. FIG. In addition, the same code | symbol is attached | subjected to the same member and the same location as the said 1st Embodiment, and description is abbreviate | omitted.

  As shown in FIGS. 3 and 4, the disk warpage suppressing structure in the disk device of the second embodiment is such that a roller 17 is pivotally mounted at a substantially central portion so that it is bent and formed. Installed at the tip. At the lower end of the plate-like body 18, a rack 14 that meshes with the pinion 13 of the gear group 12 driven by the drive motor 11 is provided in the longitudinal direction on the guide plate-like body 19.

  Due to the horizontal movement of the guide plate-like body 19, the shaft portion 18 a at the lower end of the plate-like body 18 is rotated obliquely upward along the vertical groove portion 19 a. The circumferential groove of the roller 17 at the tip of the cylindrical body 18 is fitted to the periphery of the disk 2 so as to be able to rotate, so that the warpage of the disk 2 is suppressed.

  Therefore, according to the second embodiment, the roller 17 at the tip end of the plate-like body 18 rotates obliquely upward along the obliquely inclined vertical groove portion 19a of the guide plate-like body 19, and the circumference of the roller 17 is increased. Since the groove is rotatably fitted to the periphery of the disk 2, the warp of the disk 2 can be suppressed when the label 2 or the like is attached to the disk 2, so that the warp of the disk 2 can be suppressed. Can be performed.

1 shows a disk warpage suppressing structure in the disk device of the first embodiment of the present invention, (a) is a schematic sectional front view showing a state in which the disk warpage is suppressed, and (b) is an outline of the roller moving mechanism. It is a side view. It is a schematic sectional front view of the state which cancelled | released the curvature suppression of the disk of the same apparatus. It is a schematic front view which shows the state which cancelled | released the curvature suppression of the disk in the curvature suppression structure of the disk in the disk apparatus of 2nd Embodiment. It is a schematic front view of the state which is suppressing the curvature of the disk in the device. It is a conventional disk device partial front view. A conventional optical disk clamp mechanism is shown, (a) is a front view thereof, and (b) is a plan view thereof. It is a schematic sectional drawing of the conventional optical disk apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disc tray 2 Disc 3 Turntable 4 Clamper 5 Main body part 6 One roller 7 Drive motor 8 Pickup main body 9 The other roller 10 Projection shaft 11 Other drive motors 12 Gear group 13 Pinion 14 Rack 15 Guide plate-like body 15a Groove part 16 Moving shaft 17 Roller 18 Plate body 18a Shaft portion 19 Guide plate body 19a Groove portion

Claims (3)

When the disc placed on the upper side of the disc tray is set between the turntable and the clamper and the label is attached to the disc, the temperature shrinkage rate of the disc and the label etc. In the disc warpage suppressing structure in the disc device that prevents warpage caused by the difference between the discs, one roller for suppressing disc warpage is disposed at a position facing the periphery of the disc in the main body of the clamper. The other roller is disposed on the protruding shaft at a position facing the peripheral edge of the disk on the upper surface of the pickup body that supports the drive motor of the turntable, and the pinion of the gear group driven by the other drive motor The picker is placed in a diagonally upward and downward groove formed in a guide plate-like body provided with a meshing rack in the longitudinal direction. When the disk is set on the disk tray, the rack is moved to one side and the movement axis fitted in the movement groove is obliquely upward. By moving, the other roller on the protruding shaft on the pickup body is moved obliquely upward, and the periphery of the disk is sandwiched in a rotatable state in the groove between the other roller and the one roller. Accordingly, the disk warpage suppressing structure in the disk device is characterized in that the warpage of the disk is suppressed by the circumferential grooves of these rollers. When the disc placed on the upper side of the disc tray is set between the turntable and the clamper and the label is attached to the disc, the temperature shrinkage rate of the disc and the label etc. In a disc warpage suppressing structure in a disc device that prevents warping caused by a difference in the number of discs, a roller having a circumferential groove is disposed in the vicinity of the peripheral edge of the disc, and this disc suppresses warpage of the disc. A structure for suppressing warpage of a disk in a disk device, characterized by comprising: The roller is attached to the tip of a plate-like body pivotally mounted substantially at the center, and the lower end of the plate-like body is formed in a diagonally upward and downward groove formed in the guide plate-like body. The guide plate-like body is provided with a rack that engages with a pinion of a gear group driven by a drive motor in the longitudinal direction, and the guide plate-like body has a horizontal orientation. Due to the movement, the shaft portion at the lower end of the plate-like body is rotated obliquely upward along the vertical groove portion, and the circumferential groove of the roller at the tip of the plate-like body is rotated by the rotation of the plate-like body. The disc warpage suppressing structure in the disc device according to claim 2, wherein the disc is prevented from warping by being rotatably fitted to the periphery of the disc.

Images