JP2007149279A - Disk drive with tray - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively suppress vibrations of a tray when a disk is rotated. <P>SOLUTION: A a pair of a lower rib 21 and an upper rib 22 is formed in a rear wall part 7D of a frame 7. The lower rib 21 and the upper rib 22 are formed at a position that is engaged with a rear end edge of the tray 2. Consequently, when the tray 2 is at a disk regenerating position, the lower rib 21 and the upper rib 22 sandwich and hold the rear end edge of the tray 2 to suppress the vibrations of the tray 2 when the disk is rotated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention guides a disk-shaped storage medium (hereinafter simply referred to as a disk) so as to be able to reciprocate between a disk insertion / removal position and a disk reproduction position, and records or reproduces the disk at the disk reproduction position. In particular, the present invention relates to a disk device having a structure for suppressing vibration of a tray during recording or reproduction of the disk.

  Conventionally, a disk device for recording or reproducing a disk is not limited to a stationary DVD player, CD player, or the like, and its application is wide-ranging such as being built in a television receiver body. Such a disk device has a tray on which a disk is placed, a resin frame that movably supports the tray, and a storage surface of the disk that is irradiated with laser light to reproduce or record on the storage surface. And a pickup unit to be used as a main constituent member. When recording or reproducing a disc, the tray is moved to the disc attachment / detachment position outside the frame, the disc is placed on the tray, and then the tray is moved to the disc reproduction position. When the tray moves to the disk playback position, the tip of the turntable is fitted into the opening at the substantially central portion of the disk placed on the tray to float the disk from the tray. And the clamper, and the disk is rotated by the rotational driving force of a motor attached to the turntable, and information is written to and recorded on the disk by a pickup unit, or the information recorded on the disk is read. Reproduce.

  By the way, the disk device writes information on the storage surface by rotating the disk at a high speed during recording or reproduction of the disk, or reads the information recorded on the storage surface, so that vibration occurs when the disk is rotated at high speed. appear. For example, Patent Document 1 provides an elastic plate in which one end is fixed in a housing (frame), and the other end is movable up and down with the fixed portion as a fulcrum, as a countermeasure against vibration during disk rotation. A traverse mechanism with a turntable and an optical pickup is attached to this elastic plate, and when the disc is played back, the other end of the elastic plate is raised and the disc is placed between the turntable of the traverse mechanism and the clamper provided on the housing. There has been disclosed a disk drive device configured to absorb vibration generated at high speed of a disk by an elastic plate by clamping. In Patent Document 2, a semicircular tray vibration isolating portion (convex portion) is projected from the tray, a holding portion that can be engaged with the tray vibration isolating portion is formed on the housing, and a disk playback position inside the housing is formed. In this case, there has been proposed a disk drive device configured to prevent vibration transmitted to the tray when the disk is rotated by engaging the tray vibration isolating unit with the holding unit of the housing.

Japanese Patent Laid-Open No. 10-106231 JP 2005-222590 A

  The disk device disclosed in Patent Document 1 absorbs vibration generated when the disk rotates by supporting the traverse mechanism including a turntable that rotates the disk with an elastic plate. There is a possibility that abnormal noise may be generated when the tray, which is transmitted to the tray through the casing and is movably provided, repeatedly contacts the casing due to the influence of the vibration. In this regard, the disk device disclosed in Patent Document 2 has a tray vibration-proof portion projecting from the tray abutted against the holding portion of the casing, and the holding portion sandwiches both sides of the tray or the top and bottom of the tray to suppress tray vibration. However, since the tray anti-vibration parts are formed on both sides or the upper and lower surfaces of the tray, the horizontal width or height of the casing is increased by forming the tray anti-vibration parts. Incurs an increase in size. In addition, it is necessary to form a tray vibration isolating portion on the tray side and a holding portion that engages with the tray vibration isolating portion on the housing side, which complicates the shape of the tray and the housing, leading to an increase in molding cost. It had the problem that.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a disk device including a tray that can effectively suppress vibration of the tray with a simple and inexpensive structure.

  A disc device comprising a tray according to claim 1 comprises a tray on which a disc-shaped storage medium is placed, and a frame for reciprocally guiding the tray between a disc attaching / detaching position and a disc reproducing position, The frame is provided with an anti-vibration means that engages with a tray stored at the disk reproduction position and suppresses vibration of the tray.

  According to the configuration of the first aspect, the tray is moved inside the frame by the driving mechanism, and the disk placed on the tray is completely stored inside the frame. The position in this state is the disk reproduction position, and when the tray moves to the disk reproduction position, the rear edge of the tray engages with the vibration isolating means. In this state, the turntable is raised, and the disk is rotated by the rotation of the turntable by the rotational driving force of the motor from the state where the disk is sandwiched between the turntable and the clamper, and at the same time, a laser beam is irradiated from the pickup unit. The pickup unit moves in the radial direction of the disc, and recording or reproduction processing is performed on the disc. At this time, the vibration due to the rotation of the disk is transmitted to the tray, but the trailing edge of the tray is suppressed by the vibration isolating means.

  According to a second aspect of the present invention, there is provided a disc device having the tray according to the first aspect, wherein the vibration isolating means includes a lower rib and an upper rib integrally formed on the frame. Further, the rear edge of the tray is sandwiched between the upper rib and the upper rib so as to suppress the vibration of the tray.

  According to the second aspect of the present invention, when the tray moves to the disk reproduction position, the rear edge of the tray is sandwiched from above and below by the lower rib and the upper rib, and vibration of the tray due to the rotation of the disk is suppressed.

  The disc device provided with the tray according to claim 3 is the disc device provided with the tray according to claim 1, wherein the vibration isolating means is provided on the elastic body provided at a rear edge of the tray and the frame. It is characterized by comprising an engaging rib, and the elastic body and the engaging rib are elastically engaged at the disk reproduction position.

  According to the configuration of claim 3, when the tray moves to the disk reproduction position, the elastic body of the tray engages with the engaging rib of the frame, and the urging force is applied to the tray downward by the engaging rib. Tray vibration due to disk rotation is suppressed.

  According to a fourth aspect of the present invention, there is provided a disc apparatus having the tray according to the third aspect, wherein the elastic body is constituted by a leaf spring fixed to the tray.

  According to the structure of claim 4, when the tray is moved to the disk reproduction position, the plate spring of the tray is engaged with the engagement rib of the frame, and a biasing force is applied to the tray downward by the plate spring. The vibration of the tray due to the rotation of is suppressed.

  The disk device having the tray according to claim 5 is the disk device having the tray according to claim 3, wherein the elastic body is an elastic arm provided so as to be elastically deformable by a groove portion formed at a rear end portion of the tray. It is characterized by comprising.

  According to the configuration of claim 5, when the tray moves to the disk reproduction position, the elastic arm of the tray engages with the engaging rib of the frame, and the urging force directed downward by the elastic arm is applied to the tray. The vibration of the tray due to the rotation of is suppressed.

  According to the disk device having the tray of claim 1, the disk device includes a tray on which the disk-shaped storage medium is placed, and a frame that guides the tray so as to be reciprocally movable between the disk attachment / detachment position and the disk reproduction position. The frame is provided with an anti-vibration means that engages with the tray stored at the disk reproduction position and suppresses vibration of the tray. Therefore, the tray at the disk reproduction position engages with the anti-vibration means. The vibration of the tray during the rotation of the disk can be suppressed.

  According to the disk device having the tray of claim 2, in the disk device having the tray of claim 1, the vibration isolating means includes a lower rib and an upper rib formed integrally with the frame. Since the rear edge of the tray is sandwiched between the lower rib and the upper rib to suppress the vibration of the tray, the disc at the disc playback position is sandwiched between the lower rib and the upper rib, thereby The vibration of the tray during the rotation can be suppressed.

  According to the disk device having the tray of claim 3, in the disk device having the tray of claim 1, the vibration isolating means includes an elastic body provided at a rear edge of the tray, and the frame. Since the elastic body and the engaging rib are elastically engaged at the disk reproducing position, the tray at the disk reproducing position is provided with the elastic body and the engaging rib. Due to the engagement with the rib, a downward biasing force is applied, and the vibration of the tray during the rotation of the disk can be suppressed.

  According to the disk device having the tray of claim 4, in the disk device having the tray of claim 3, the elastic body is constituted by a plate spring fixed to the tray. Since the plate spring of the tray and the rib for engagement of the frame are engaged with each other, and a biasing force is applied to the tray downward by the plate spring, the vibration of the tray during the rotation of the disk is suppressed. can do.

  According to the disk device provided with the tray of claim 5, in the disk device provided with the tray according to claim 3, the elastic body is provided so as to be elastically deformable by a groove portion formed in a rear end portion of the tray. Since the tray is composed of arms, the tray at the disk playback position is engaged with the elastic arm of the tray and the engaging rib of the frame, and the tray is given a downward biasing force by the elastic arm. Thus, the vibration of the tray during the rotation of the disk can be suppressed.

  Specific embodiments of the present invention will be described below with reference to the accompanying drawings. The following embodiment is one form when the present invention is embodied, and is not intended to limit the present invention within the scope thereof.

  1 and 2 show a first embodiment of the present invention, FIG. 1 is a perspective view of a disk device, FIG. 2 is an enlarged cross-sectional view showing a vibration isolating means, and as shown in FIG. The disk device 1 of the example includes a traverse unit including a tray 2 for loading / unloading a disk (not shown), a turntable for rotationally driving the disk, and a pickup unit provided so as to be movable back and forth in the radial direction of the disk. The traverse unit is assembled to a frame 7 made of synthetic resin. The present invention is characterized by the relationship between the tray 2 and the frame 7. In order to clarify the characteristics of the present invention, the traverse unit including the turntable and the pickup unit is omitted in the drawing. ing.

  The frame 7 includes a bottom wall portion 7A, side wall portions 7B integrally formed on both right and left sides of the bottom wall portion 7A, and front wall portions 7C and rear wall portions 7D integrally formed on the front and rear sides of the bottom wall portion 7A. The bottomed box shape is formed, and the upper surface opening is sealed with a lid (not shown). The lid is attached to the traverse unit so as to face an opening (not shown) formed in the bottom wall portion 7A, and covers the upper surface opening of the frame 7 so as to face the turntable attached to the traverse unit. A clamper is fixed to the disc, and the disc is sandwiched between the clamper and the turntable to rotate the disc. A guide rib 10 for guiding the tray 2 is formed on the inner surface of the side wall portion 7B, and the tray 2 is moved in the front-rear direction with respect to the frame 7 along the guide rib 10.

  The tray 2 is formed by injection molding or the like, and is formed into a flat plate shape as a whole. As shown in FIG. 1, stepped substantially circular recesses 2A and 2B are formed on the upper surface of the tray 2, and a disc such as a 12 cm CD is placed in the first recess 2A. For example, a disc such as an 8 cm CD can be placed in the second recess 2B. The tray 2 is formed with an opening 11 so as not to mechanically interfere with a turntable, a pickup unit or the like when stored in the frame 7. The rear wall portion 7D of the frame 7 is formed with an anti-vibration means 20 for engaging with the rear end edge of the tray 2 to suppress the vibration of the tray 2 when the disk rotates. The anti-vibration means 20 includes a lower rib 21 and an upper rib 22, and the tray 2 is disposed between the lower rib 21 and the upper rib 22 when the tray 2 is disposed inside the frame 7 which is a disk reproduction position. The rear end edge of 2 is sandwiched. That is, the lower rib 21 and the upper rib 22 are arranged in a stepped manner so as to be shifted to the left and right so as to sandwich the rear end edge of the tray 2 with a space slightly narrower than the thickness of the frame 7. Further, tapered portions 21A and 22A for receiving the tray 2 are formed at the upper end portion of the lower rib 21 and the lower end portion of the upper rib 22 so that the rear end edge of the tray 2 is drawn.

  When the tray 2 is moved from the inside of the frame 7 to the outside of the frame 7 by the tray driving mechanism, the recesses 2A and 2B formed on the upper surface of the tray 2 are exposed to the outside of the frame 7 by a stopper mechanism (not shown). The drive of the tray 2 is stopped, and the disc can be placed in the recess 2A or the recess 2B, or the disc placed in the recess 2A or the recess 2B can be taken out, and this position becomes the disc attachment / detachment position. Then, the disc is placed in the concave portion 2A or the concave portion 2B of the tray 2 at the disc attachment / detachment position, and is completely stored inside the frame 7 together with the disc on which the tray 2 is placed by the tray driving mechanism. In this state, the opening at the substantially central portion of the disc coincides with the turntable and the clamper, and the position in this state is the disc reproduction position. As described above, when the tray 2 moves to the disk reproduction position, the rear edge of the tray 2 is sandwiched from above and below by the lower rib 21 and the upper rib 22. In this state, the turntable attached to the traverse unit rises, and the disc is rotated by the rotation of the turntable by the rotational driving force of the motor while the disc is sandwiched between the turntable and the clamper. , The pickup unit moves in the radial direction of the disc, and recording or reproduction processing on the disc is executed.

  As described above, in the disk device 1 according to the present embodiment, the vibration isolating means 20 is configured by the pair of the lower rib 21 and the upper rib 22 formed on the rear wall portion 7D of the frame 7, and the tray 2 is at the disk reproducing position. When the rear edge of the tray 2 is sandwiched between the lower rib 21 and the upper rib 22, vibration of the tray 2 due to the rotation of the disk can be suppressed. Since the lower rib 21 and the upper rib 22 are respectively formed with taper portions 21A and 22A, when the tray 2 is moved to the disk reproducing position, the rear edge of the tray 2 is formed by the taper portions 21A and 22A. It is guided and is surely drawn between the lower rib 21 and the upper rib 22. In this way, by vertically sandwiching the rear end edge of the tray 2 between the lower rib 21 and the upper rib 22, the vertical vibration of the tray 2 can be effectively suppressed. That is, both sides of the tray 2 are guided while being regulated by the guide ribs 10 formed on the frame 7, but since the tray 2 is configured to be movable, there is always a gap between the tray 2 and the guide ribs 10. (Clearance) is provided, and if this gap is normal, vibration of the tray 2 during the rotation of the disk interferes with the guide rib 10 to generate an abnormal noise. By sandwiching the tray 2 up and down with the ribs 21 and the upper ribs 22, vibration of the tray 2 can be suppressed, and abnormal noise can be effectively suppressed.

  In addition, by forming the vibration isolating means 20 on the rear wall portion 7D of the frame 7, it is possible to suppress the vibration of the tray 2 without increasing the horizontal width or height dimension of the disk device 1. That is, a gap for providing a vibration isolating means is required between the rear end edge of the tray 2 moved to the disk reproduction position and the rear wall portion 7D of the frame 7. However, as in this embodiment, the frame 7 Even if the lower rib 21 and the upper rib 22 are formed on the rear wall 7D, the depth dimension of the frame 7 is not affected. Accordingly, as compared with the case where a protruding tray vibration isolating portion is formed on both sides or top and bottom of the tray as in Patent Document 2 and a holding portion that engages with the tray anti-vibration portion is formed on the housing (frame) side. The vibration of the tray 2 can be suppressed without increasing the size of the apparatus 1 and it is not necessary to perform special processing on the tray 2 side, so that the cost is low.

  3 and 4 show a second embodiment of the present invention, where parts having the same functions as those of the first embodiment are denoted by the same reference numerals, description of overlapping parts is omitted, and only different parts will be described.

  In this embodiment, the anti-vibration means 30 includes a plate spring 31 that is an elastic body fixed to the rear end portion of the tray 2 and an engagement rib 32. The leaf spring 31 is fixed to the rear end portion of the tray 2 by a screw 33, and the engaging rib 32 engages with the leaf spring 31 to press the leaf spring 31 from above to the rear wall portion 7D of the frame 7. Is provided. Further, a tapered portion 32A for guiding the leaf spring 31 is formed at the lower end portion of the engaging rib 32.

  In the present embodiment configured as described above, the vibration isolating means 30 includes the leaf spring 31 fixed to the rear end portion of the tray 2 with the screw 33 and the engaging rib 32 that engages with the leaf spring 31. When the tray 2 is in the disc reproduction position, the leaf spring 31 is engaged with the engagement rib 32 and pressed downward. As a result, the tray 2 is given a downward urging force by the leaf spring 31, and the vibration of the tray 2 during the rotation of the disk can be suppressed. Further, since the engaging rib 32 is formed with a tapered portion 32A as in the first embodiment, when the tray 2 is moved to the disk reproducing position, it is fixed to the rear end portion of the tray 2 by the tapered portion 32A. The plate spring 31 is surely drawn into the engaging rib 32. In the present embodiment, since the vibration of the tray 2 is suppressed by the engagement of the leaf spring 31 and the engaging rib 32, for example, when the tray 2 is formed due to warping or bending. However, it is possible to reduce fluctuations in the load in the engaged state between the leaf spring 31 fixed to the tray 2 and the engaging rib 32 formed on the rear wall portion 7D of the frame 7.

  5 and 6 show a third embodiment of the present invention, where parts having the same functions as those of the respective embodiments are denoted by the same reference numerals, description of overlapping parts is omitted, and only different parts will be described.

  In the second embodiment, an example in which the elastic body is configured by the leaf spring 31 is shown. However, in this embodiment, the elastic arm 45 is integrally formed on both sides of the rear end of the tray 2 as an elastic body, and the elastic arm 45 is engaged with the elastic arm 45. Anti-vibration means 40 is constituted by the ribs 32. The elastic arm 45 is formed to be elastically deformable by a concave portion 46 and a groove portion 47 formed at the rear end edge of the tray 2.

  In the present embodiment configured as described above, the vibration isolating means 40 is constituted by the elastic arm 45 integrally formed at the rear end portion of the tray 2 and the engaging rib 32 engaged with the elastic arm 45. When the tray 2 is in the disk reproduction position, the elastic arm 45 is engaged with the engagement rib 32 and the elastic arm 45 is pressed downward. As a result, the tray 2 is given a downward biasing force by the elastic arm 45, and the vibration of the tray 2 during the rotation of the disk can be suppressed. Further, in this embodiment, since the elastic arm 45 is integrally formed as an elastic body by forming the concave portion 46 and the groove portion 47 in the tray 2, it is not necessary to separately fix the elastic body to the tray 2. As a result, the assembly work can be simplified without increasing the number of parts.

  As mentioned above, although one Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, the number of upper and lower ribs, leaf springs and elastic arms as elastic bodies may be selected as appropriate.

It is a perspective view which shows the state which assembled | attached the tray to the flame | frame in Example 1 of this invention. It is a schematic sectional drawing which shows a vibration isolating means same as the above. It is a perspective view which shows the state which assembled | attached the tray to the flame | frame in Example 2 of this invention. It is a schematic sectional drawing which shows a vibration isolating means same as the above. It is a perspective view which shows the state which assembled | attached the tray to the flame | frame in Example 3 of this invention. It is a schematic sectional drawing which shows a vibration isolating means same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disc apparatus 2 Tray 7 Frame 20, 30, 40 Anti-vibration means 21 Lower rib 22 Upper rib 31 Leaf spring (elastic body)
32 engaging rib 45 elastic arm (elastic body)
47 Groove

Claims (5)

  A tray on which a disk-shaped storage medium is placed; and a frame that guides the tray to reciprocate between a disk attachment / detachment position and a disk reproduction position, and the tray stores the tray in the disk reproduction position. A disk device provided with a tray, characterized in that a vibration isolating means is provided that engages with the tray and suppresses vibration of the tray.   The anti-vibration means is composed of a lower rib and an upper rib formed integrally with the frame, and the rear edge portion of the tray is sandwiched between the lower rib and the upper rib so as to suppress the vibration of the tray. A disk apparatus comprising a tray according to claim 1.   The anti-vibration means includes an elastic body provided at the rear edge of the tray and an engagement rib provided on the frame, and elastically connects the elastic body and the engagement rib at the disk reproduction position. 2. A disk device having a tray according to claim 1, wherein the disk device is engaged.   4. The disk device having a tray according to claim 3, wherein the elastic body is constituted by a leaf spring fixed to the tray. 4. The disk device having a tray according to claim 3, wherein the elastic body is constituted by an elastic arm provided so as to be elastically deformable by a groove formed at a rear end portion of the tray.

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