JP2008112548A - Disk device with resonance prevention mechanism for traverse holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk device with a resonance prevention mechanism for a traverse holder. <P>SOLUTION: First projection parts 2a are formed around bosses 21 formed at a traverse holder 2. In a slide cam 3, second projection parts 3a are positioned and formed at points corresponding to the first projection parts 2a. A gap between the traverse holder 2 and the slide cam 3 formed at a disk chucking position can be closed by abutment between the first projection parts 2a and the second projection parts 3a. Thereby, vibration of the slide cam 3 is suppressed, resonance of the traverse holder can be prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a disk device including a traverse holder resonance preventing mechanism for preventing resonance of a traverse holder accompanying rotation for reproducing a disk when the loaded disk is caught by a turntable and a clamper.

  In a conventional reproducing apparatus for a disk as a recording medium such as a CD or a DVD, the vibration of the frame is generated by the rotation of the disk when the disk is recorded or reproduced, and the laser irradiated from the pickup unit toward the disk There is a problem that the irradiation position is deviated and noise due to vibration is generated. Various methods have been disclosed to prevent this vibration.

  For example, in Patent Document 1, a protrusion is formed on the side of the traverse holder that moves up and down so that rattling does not occur during the lifting operation, a guide rib is formed on the frame, and the protrusion is slid along the guide rib. Thus, a structure is disclosed in which the traverse holder does not move back and forth beyond the width of the guide rib, and the traverse holder is prevented from rattling in the disk loading / unloading direction.

  FIG. 12 shows a conventionally used traverse holder 200 and slide cam 300. As shown in FIG. 12, a gap is formed between the traverse holder 200 and the slide cam 300. As a result, the slide cam becomes loose.

JP 2006-155784 A

  However, in the method of Patent Document 1, it is possible to suppress the rattling of the traverse holder itself, but the gap between the traverse holder and the slide cam as described above has not been eliminated. As a result, there is a problem that the traverse holder resonates due to the rattling.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a disk device including a traverse holder resonance prevention mechanism for preventing resonance of the traverse holder and the slide cam at the disk catching position.

A disk device comprising a resonance prevention mechanism for a traverse holder according to claim 1 includes a turntable for mounting a disk for reproducing the disk, a motor for rotating the disk mounted on the turntable, A traverse unit comprising a pickup lens for reading and recording;
A traverse holder holding the traverse unit and having at least one boss;
A slide cam for raising and lowering the traverse holder having an insertion hole for inserting and sliding the boss;
A disc tray for loading and unloading discs into and out of place;
A clamper for fixing the disk placed on the turntable;
A frame having a support plate for supporting the clamper and forming an outer shape of the disk device;
A disk device comprising:
A first protrusion is formed on the traverse holder, a second protrusion is formed on the slide cam, and a disc is placed on the turntable and the traverse holder is raised to be clamped by the clamper. The first projection and the second projection are positioned so as to come into contact with each other at the position of the traverse holder and the slide cam.

  According to the configuration of the first aspect, the protrusion is formed on each of the traverse holder for holding the traverse holder having the turntable and the pickup portion and the slide cam for moving the traverse holder up and down, and the clamper and the turntable. When the disk is caught by the above, the protrusions formed on the traverse holder and the slide cam come into contact with each other, so that a gap generated between the traverse holder and the slide cam can be filled.

  A disk device comprising the traverse holder resonance prevention mechanism according to claim 2 is the disk device comprising the traverse holder resonance prevention mechanism according to claim 1, wherein the first protrusion is formed from the center of the boss. It is formed within a range of 1.5 times the radius.

  According to the structure of Claim 2, the vibration and noise which arise with drive sources, such as a pick-up hold | maintained by a traverse holder, can be suppressed effectively.

  The disc device including the traverse holder resonance prevention mechanism according to claim 3 can more effectively suppress vibration and noise with respect to the traverse holder in which two bosses are formed.

A disk device comprising a resonance prevention mechanism for a traverse holder according to claim 1 includes a turntable for mounting a disk for reproducing the disk, a motor for rotating the disk mounted on the turntable, A traverse unit comprising a pickup lens for reading and recording;
A traverse holder holding the traverse unit and having at least one boss;
A slide cam for raising and lowering the traverse holder having an insertion hole for inserting and sliding the boss;
A disc tray for loading and unloading discs into and out of place;
A clamper for fixing the disk placed on the turntable;
A frame having a support plate for supporting the clamper and forming an outer shape of the disk device;
A disk device comprising:
A first protrusion is formed on the traverse holder, a second protrusion is formed on the slide cam, and a disc is placed on the turntable and the traverse holder is raised to be clamped by the clamper. At the position of the traverse holder and the slide cam at the time, the first projection and the second projection are positioned so as to contact each other. The first protrusion and the second protrusion come into contact with each other at the raised disk reading position, so that the gap formed between the traverse holder and the slide cam can be filled. Vibration and noise can be suppressed.

  A disk device comprising the traverse holder resonance prevention mechanism according to claim 2 is the disk device comprising the traverse holder resonance prevention mechanism according to claim 1, wherein the first protrusion is formed from the center of the boss. Since it is formed within a range of 1.5 times the radius, the gap between the rubber holder and the slide cam is filled by the two projecting parts coming into contact with each other, so that vibration caused by a drive source such as a motor installed in the traverse holder The cause of the interference of the slide cam can be prevented.

  A disk apparatus comprising the traverse holder resonance prevention mechanism according to claim 3, wherein the disk apparatus comprises the traverse holder formed with two bosses. The first protrusion has a width twice as large as the diameter of the boss, and further passes through a point spaced outward from the center of the boss by a distance equal to the diameter of the boss. The drive source of a motor or the like installed in the traverse holder is formed by filling the gap between the traverse holder and the slide cam by the two projecting parts coming into contact with each other. It is possible to prevent the slide cam from interfering due to the vibration caused by.

  Hereinafter, an embodiment as the best mode for carrying out the present invention will be described with reference to FIGS. Of course, it goes without saying that the present invention can be easily applied to other than those described in the embodiments without departing from the spirit of the invention.

  1 to 6 show an embodiment of the present invention, and FIG. 1 is a perspective view showing a disk device in the embodiment of the present invention. FIG. 2 is a perspective view showing the disk device with the disk tray, clamper, and clamper support plate removed. FIG. 3 is an explanatory diagram showing an operation in which the slide cam slides with respect to the traverse holder and the first and second protrusions come into contact with each other. FIG. 4 is an explanatory diagram showing a range of positions where the first protrusions formed on the traverse holder are formed. FIG. 5 is an explanatory diagram showing a formation example of the first protrusion formed on the traverse holder and the second protrusion formed on the slide cam. FIG. 6 is an explanatory view showing the operation of the traverse holder and the slide cam shown in FIG. 7-11 is explanatory drawing which shows the example of a shape different from the projection part shown to FIG.

  The configuration of the disk device will be described with reference to FIGS. Reference numeral 1 denotes a disk device. Reference numeral 2 denotes a traverse holder for holding a traverse unit described later. Reference numeral 3 denotes a slide cam for moving the traverse holder 2 up and down. Reference numeral 4 denotes a traverse unit, which is a pickup unit 41 for reading data stored in the disk and writing data to the disk, a motor 42 for driving the pickup unit 41, and a turn for rotating the disk. A table 43 is mounted on the traverse unit 4. Reference numeral 5 denotes a clamper that holds a disk placed on the turntable 43. The traverse holder 2 is raised by the slide cam 3, and the turntable 43 and the clamper 5 come into contact therewith to hold the disk. Reference numeral 6 denotes a disk tray for carrying the disk in and out of the disk device 1. Reference numeral 7 denotes a frame that forms the outer shape of the disk device, and reference numeral 71 denotes a support plate that supports the clamper 5.

  Next, a structure for preventing resonance of the traverse holder 2 during disk rotation will be described with reference to FIG. Reference numeral 21 denotes a substantially cylindrical boss, and reference numeral 31 denotes a cam groove. By inserting the boss 21 and sliding the slide cam 3 to the left and right, the boss 21 moves up and down along the cam groove 31 and moves up and down the traverse holder 2. A first protrusion 2a is formed integrally with the boss 21 to prevent resonance of the traverse holder 2 due to the rotating operation when the disc is rotated at the catching position of the disc where the traverse holder for the lifting operation is at the highest position. To do.

  A second protrusion 3 a is formed on the slide cam 2. The second protrusion 3a is positioned so as to come into contact with the first protrusion 2a formed on the traverse holder 3 at the disc catching position.

  The state of each protrusion when the traverse holder 2 and the slide cam 2 described above operate will be described with reference to FIG. FIG. 4A shows the traverse holder 2 and the slide cam 3 in a state where the disk placed on the disk tray 6 is unloaded. When the slide cam 3 slides to the right in the figure from this state, the boss 21 moves upward along the cam groove 31, thereby raising the traverse holder 2. The boss 21 is located at the end of the cam groove 31 when it is in the raised position, that is, the disc catching position. At this position, the first projection 2a contacts the second projection 3a, fills the gap between the traverse holder 2 and the slide cam 3 as shown in FIG. 3B, and the traverse holder 2 generated by this gap. Prevent vibration.

  According to the configuration of the disk device 1 as described above, the first protrusion 2a formed on the traverse holder 2 and the second protrusion 3a formed on the slide cam 2 are brought into contact with each other at the disk catching position. When the disc loaded by the disc tray 6 is sandwiched between the clamper 5 and the turntable 43 and rotated for reproduction or writing, the motor 42 is driven to drive the disc in the traverse holder 2 through the traverse unit 4 in the direction of loading / unloading the disc. Vibration can be prevented, and deviation of the optical axis of the laser emitted from the pickup unit 41 can be prevented.

  The first protrusion 2a has been described as being formed integrally with the boss 21, but when the diameter of the boss 21 is d, as shown in FIG. 5, within the range of 1.5d from the center of the boss 21 (A in the figure). ), The same resonance prevention effect can be obtained. When there are two bosses 21, the line connecting the centers of the bosses 21 is the center line, and the first protrusion is within a distance d (B in the figure) from the center line and the center of the boss. The part 2a may be formed.

  As mentioned above, although the 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, there is no problem even if the first protrusion 2a and the second protrusion 3a are within the range shown in FIG. Further, the shape of the first protrusion and the second protrusion is not limited to the position and shape as shown in FIGS. 3 and 4, but is formed in a substantially rectangular parallelepiped shape as shown in FIGS. Alternatively, it may be formed in a substantially semicircular shape around the boss 21 as shown in FIGS.

It is a perspective view which shows the disk apparatus in the Example of this invention. FIG. 3 is a perspective view showing the disk device from which the disk tray, clamper and clamper support plate are removed. (A) is a front view which shows a slide cam and (b) shows a traverse holder. Same as above, showing the raising and lowering operation of the traverse holder, (a) is a plan view showing after descending, (b) is a front view showing after descending, (c) is a plan view showing after raising, d) is a front view. It is a front view which shows the formation possible range of the 1st projection part in the boss | hub periphery of a traverse holder same as the above. FIG. 5 is a front view of a traverse holder and a slide cam showing an example of a first protrusion different from the shape shown in FIGS. 3 and 4. FIG. 6 is a plan view showing the traverse holder shown in FIG. 6 after being lowered, (a) is a plan view after the lowering, (b) is a front view showing the lowering, and (c) is a plan view after the raising. (D) is a front view. It is a front view of the traverse holder and slide cam which show an example of the 1st projection part same as the above. FIG. 6 is a plan view showing the traverse holder shown in FIG. 6 after being lowered, (a) is a plan view after the lowering, (b) is a front view showing the lowering, and (c) is a plan view after the raising. (D) is a front view. It is a front view of the traverse holder and slide cam which show an example of the 1st projection part same as the above. FIG. 6 is a plan view showing the traverse holder shown in FIG. 6 after being lowered, (a) is a plan view after the lowering, (b) is a front view showing the lowering, and (c) is a plan view after the raising. (D) is a front view. It is a front view which shows the structure of the traverse holder and slide cam of the disk apparatus used conventionally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disc apparatus 2 Traverse holder 21 Boss 2a 1st projection part 3 Slide cam 31 Cam groove 3a 2nd projection part 4 Traverse unit 41 Pickup part 42 Motor 43 Turntable 5 Clamper 6 Disc tray 7 Frame

Claims (3)

A traverse unit comprising a turntable for placing the disk for reproducing the disk, a motor for rotating the disk placed on the turntable, and a pickup lens for reading and recording the disk;
A traverse holder holding the traverse unit and having at least one boss;
A slide cam for raising and lowering the traverse holder having an insertion hole for inserting and sliding the boss;
A disc tray for loading and unloading discs into and out of place;
A clamper for fixing the disk placed on the turntable;
A frame having a support plate for supporting the clamper and forming an outer shape of the disk device;
A disk device comprising:
A first protrusion is formed on the traverse holder, a second protrusion is formed on the slide cam, and a disc is placed on the turntable and the traverse holder is raised to be clamped by the clamper. A disk having a resonance prevention mechanism for a traverse holder, wherein the first protrusion and the second protrusion are positioned so as to contact each other at the position of the traverse holder and the slide cam at the time apparatus.   2. The disk device having a resonance preventing mechanism for a traverse holder according to claim 1, wherein the first protrusion is formed within a range of 1.5 times the radius of the boss from the center of the boss.   The disk device having the traverse holder in which the two bosses are formed, wherein the first protrusion has a width twice as large as the diameter of the boss, and further from the center of the boss to the boss. 2. The traverse holder resonance prevention mechanism according to claim 1, wherein the anti-resonance mechanism of the traverse holder according to claim 1 is formed within a rectangular range having a center line passing through a point spaced outward by a distance equal to the diameter and passing through the center of the boss. Disk device provided.

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