KR20010046866A - Tray apparatus of slim type disk drive - Google Patents

Abstract

PURPOSE: A tray apparatus of slim type disc drive is provided to reduce vibration noise greatly by restricting movement of horizontal direction and vertical direction of tray. CONSTITUTION: A tray(53) is installed to be able to be moved to front and back at a main frame(51) and makes a loading and unloading a disc. A left and a right rack guide(57) is fixed at both side of the main frame(51) and guides movement of the tray(53) so that the tray(53) access to a proper location of the main frame(51). A left and a right slide rack(55) is installed between the tray(53) and each rack guide(57) and assists a smooth front and back movement of the tray(53). A rail part(54) which has a designated section is formed at the lower both side of the tray(53). The left and the right slide rack(55) is formed to expropriate the rail part(54) and is combined to be made a sliding with the rail part(54). A horizontal vibration prevention device and the vertical vibration prevention device are installed at the rear part of the left and right rack guide(57) and restrict movement of horizontal direction and vertical direction of the rail part(54), adding a certain power forward the rail part(54) if the tray is in state of close.

Description

Tray device for slim disk drive {TRAY APPARATUS OF SLIM TYPE DISK DRIVE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray device of a slim disk drive applied to a slim drive field such as a CD-ROM / DVD-ROM for a notebook, and more particularly, to a rack guide for guiding and supporting a tray back and forth. It relates to a tray device of a slim disk drive having a modified structure.

The slim disk drive according to the related art has a sled system which performs a function of playing / recording a signal inherently included in the disk D, as shown in FIGS. 1 and 2, and a disk by the sled system ( D) A loading system for loading the disk D into the system to enable reproduction / recording of signals, and a control system for controlling the operation of the sled system and the loading system.

The sled system includes a pickup 1 which is an optical recording information reproducing part, a spindle motor 3 which rotates the reproduction / Giroxy disc D of the disk D signal by the pickup 1, and the spindle. The spindle motor printed circuit board 5 for controlling the operation of the motor 3 and the pickup (D) so that the reproduction / recording function of the disk D signal by the pickup 1 is performed over the front surface of the disk D. And a sled base 7 on which the above-mentioned components are mounted, and a pick-up transfer part for linearly moving 1) in the radial direction of the disk D.

In addition, the loading system is installed on the main frame 11 and the main frame 11 to form the exterior of the drive so as to be movable back and forth to load / unload the disk (D) and the sled base (7) Left and right rack guides that are assembled to the assembled tray 13 and to both sides of the main frame 11 to guide the movement of the tray 13 so that the tray 13 enters into position of the main frame 11. 15a and 15b and left and right slide racks 17a and 17b installed between the tray 13 and the respective rack guides 15a and 15b to assist smooth back and forth movement of the tray 13. It is configured to include.

Here, the tray 13, the slide racks 17a and 17b and the rack guides 15a and 15b are coupled to each other so as to be slidable as shown in FIG.

That is, rail portions 13a and 13b having cross-sections of a 'b' or 'b' shapes are formed on both sides of the lower end of the tray 13, and the left and right slide racks 17a and 17b are respectively It is formed to accommodate the rail portions 13a and 13b, and is slidably coupled to the rail portions 13a and 13b. The left and right rack guides 15a and 15b are illustrated in FIGS. 4 to 7. As shown, it is formed to accommodate the slide racks 17a and 17b and is slidably coupled to the slide racks 17a and 17b.

In addition, the rear end of the left and right rack guides (15a) and (15b) so that the slide racks (17a) and (17b) is not excessively moved to the rear of the rack guides (15a) (15b). The slide rack stopper 19 which restricts the moving distance of () is formed.

In addition, the control system is configured to include a main board printed circuit board 21 for supplying power to the system, and the main board printed circuit board 21 for interfacing with an external device during the reproduction / recording process of the disk (D) signal. .

Here, the main board printed circuit board 21 is connected to the spindle motor printed circuit board 5 and the flexible printed circuit (23) so as to control the operation of the sled system at the same time the tray It is provided with a loading switch 25 that can detect when the 13 is completely inserted into the main frame 11 is closed.

In the disk drive configured as described above, when the tray 13 is first taken out of the main frame 11 and opened, the disk D is placed on the turntable 4 of the spindle motor 3 installed at the center of the tray 13. After seating, push the tray 13 completely into the main frame 11 again.

In this case, when the tray 13 is pushed into the main frame 11, the tray 13 and the slide racks 17a and 17b are together along the rack guides 15a and 15b to form the interior of the main frame 11. Is entered. Thereafter, when the slide racks 17a and 17b are caught and stopped by the slide rack stopper 19 formed at the rear ends of the rack guides 15a and 15b, the rail parts 13a and 13b formed at the bottom of the tray 13 are stopped. And the tray 13 completely enters the main frame 11 along the slide racks 17a and 17b by the sliding motion between the slide racks 17a and 17b.

When the tray 13 is closed as described above, the rear end portion of the tray 13 presses the loading switch 25 installed on the main board PCB 21 and the tray 13 is closed by the loading switch 25. When the state of closing the train 13 is recognized by the loading switch 25, the spindle motor 3 is operated to rotate the disk D.

As described above, when the disk D is rotated, data transfer occurs between the disk D and the pickup 1, so that a signal inherent in the disk D is reproduced / recorded. At this time, the pickup 1 is linearly moved in the radial direction of the disc D so that the data reproduction / recording function can be performed on the front surface of the disc D. FIG.

However, in the conventional slim disk drive as described above, when the spindle motor 3 is rotated to rotate the disk D, internal vibration is generated by the rotation of the spindle motor 3 and the disk D. The internal vibrations are transmitted in order along the path of the sled base 7 → tray 13 → slide racks 17a and 17b → rack guides 15a and 15b → main frame 11 to vibrate the entire drive. Finally, it is transmitted to the body of the drive system, such as a laptop, to vibrate the whole system.

In particular, the conventional slim disk drive as described above has a structure in which the tray 13, the slide racks 17a and 17b, and the rack guides 15a and 15b are moved while sliding each other and moved between the respective components. Since the interval required for the movement is essential, when the internal vibration generated by the rotation of the disk D and the spindle motor 3 is transmitted, the tray 13, the slide rack 17a, 17b, and the rack guide 15a There was a problem that severe vibration noise was generated due to the vibration between (15b).

The object of the present invention devised in view of the problems described above, the rail, the slide rack, the rack guide between the rail portion of the tray in the horizontal direction and vertical direction when the tray is in a closed state while maintaining the same for smooth movement The tray of the slim disk drive can be restrained at the same time to suppress vibration of the tray due to internal excitation force caused by the rotation of the disk and to reduce vibration noise in the gap between the tray, the slide rack and the rack guide. In providing a device.

1 is a configuration diagram showing a tray open state of a typical slim disk drive,

2 is a configuration diagram showing a tray closed state of a typical slim disk drive;

3 is a cross-sectional view showing a coupling structure of a tray, a slide rack, and a rack guide in a typical slim disk drive;

Figure 4 is a front view showing the structure of the rack guide in the tray device of a slim disk drive according to the prior art,

5 and 6 are a left side view and a right side view of FIG. 4;

7 is a cross-sectional view taken along the line A-A of FIG.

8 is a cross-sectional view illustrating main parts of a tray, a slide rack, and a rack guide in a tray device of a slim disk drive according to the present invention;

9 is a front view showing the structure of the rack guide according to the invention,

10 is a configuration diagram showing part B of FIG. 9 in detail;

FIG. 11 is a cross-sectional view taken along the line C-C in FIG.

<Explanation of symbols for the main parts of the drawings>

51: mainframe 53: tray

54: rail portion 55: slide rack

57: rack guide 59: mold spring portion

60: horizontal protrusion 61: first vertical protrusion

63: second vertical projection 65: slide rack stopper

In order to achieve the object of the present invention as described above, the tray is installed to be movable back and forth on the main frame, and the tray for loading / unloading the disk, and is fixed to both sides of the main frame so that the tray enters the main frame in position Left and right rack guides for guiding the movement of the trays, and left and right slide racks installed between the trays and respective rack guides to assist smooth movement of the trays, and both sides of the lower ends of the trays have a predetermined shape. Rail sections each having a cross section are formed, and the left and right slide racks are formed to accommodate the rail sections so as to be slidably coupled to the rail sections, and the left and right rack guides can accommodate the slide racks. Is formed to be slidably coupled to the slide rack, the left The rear end of the right rack guide has horizontal vibration preventing means and vertical vibration preventing means for restraining the horizontal and vertical movement of the rail part by applying a constant force in the horizontal direction and the vertical direction toward the rail part when the tray is closed. Provided are tray devices for slim disk drives, which are each provided.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 8 is a cross-sectional view illustrating main parts of a tray, a slide rack, and a rack guide in a tray device of a slim disk drive according to the present invention. FIG. 9 is a front view showing the structure of a rack guide according to the present invention. 9 is a configuration diagram showing part B of FIG. 9 in detail, and FIG. 11 is a cross-sectional view taken along line CC of FIG. 10.

8 to 11, the tray device of the slim disk drive according to the present invention will be described.

First, a tray 53 for loading / unloading a disk is installed on the mainframe 51 forming the exterior of the drive so as to be movable back and forth, and the lower side of the tray 53 may have 'a' or ' Rail portions 54 each having a b'-shaped cross section are formed.

In addition, the left and right rack guides 57 on both sides of the main frame 51 to guide the movement of the tray 53 so that the tray 53 enters into position of the main frame 51 are provided. The left and right slide racks 55 are fixed between the trays 53 and the rack guides 57 to assist the smooth movement of the trays.

Here, the left and right slide racks 55 are formed to accommodate the rail portion 54 and slidably coupled to the rail portion 54, and the left and right rack guides 57 are slide racks ( It is formed to accommodate 55 and is slidably coupled to the slide rack (55).

In addition, the tray 53 is inserted into the rear end of the left and right rack guides 57 completely into the main frame 51 to be closed, so that the tray 53 is fixed in the horizontal direction and the vertical direction toward the rail portion 54. Horizontal vibration preventing means and vertical vibration preventing means for restraining the horizontal and vertical movement of the rail unit 54 by applying a force are provided, respectively.

In particular, the horizontal vibration preventing means is formed to generate an elastic force for pressing the rail portion 54 of the tray 53 in the horizontal direction at the rear end of the side plates 57a of the left and right rack guides 57 and its inner surface. It consists of a mold spring portion 59 is formed with a horizontal projection (60) to press the rail portion 54 to restrain.

In addition, the mold spring 59 is formed to have a thickness t 'smaller than the thickness t of the rack guide 57 so as to be spaced apart from the main frame 51, and the horizontal protrusion 60 is a tray ( When the rail 54 of the 53 enters the inside of the main frame 51, a portion contacting the rear end of the rail 54 is formed to be inclined. The front side of the horizontal protrusion 60 is formed to be inclined in order to prevent entry of the tray 53 by the horizontal protrusion 60.

In addition, the vertical vibration preventing means is formed by pressing the rail portion 54 of the tray 53 in the vertical direction on the lower surface of the upper plate 57b of the rear ends of the left and right rack guides 57 to restrain the first vertical protrusion 61. And a second bottom surface formed on the lower surface of the rear plate 57b of the rear ends of the left and right rack guides 57 so as to be positioned ahead of the first vertical protrusion 61 to press and restrain the slide rack 55 in the vertical direction. It is composed of a vertical projection (63).

In addition, the upper surface of the lower plate 57c of the rear end of the left and right rack guides 57 restrains the movement of the rail unit 54 by using the horizontal protrusion 60 and the first vertical protrusion 61. Slide rack stoppers 65 are provided to limit the entry distance of the left and right slide racks 55 so that the right slide rack 55 is not obstructed.

Here, the slide rack stopper 65 is formed on the front side of the mold spring 59 so that the slide rack 55 cannot enter the mold spring 59.

The tray device of the slim disk drive according to the present invention configured as described above is operated as follows.

First, when the tray 53 is pulled out of the main frame 51 to be opened, the disc is placed on the turntable of the spindle motor installed at the center of the tray 53, and then the tray 53 is placed inside the main frame 51 again. Push it all the way in.

At this time, when the tray 53 is pushed into the main frame 51, the tray 53 and the slide rack 55 enter the main frame 51 along the rack guide 57. Thereafter, when the slide rack 55 is caught and stopped by the slide rack stopper 65 formed on the upper surface of the bottom plate 57c of the rack guide 57, the rail unit 54 and the slide rack 55 formed at the bottom of the tray 53 are stopped. By the sliding movement between the tray 53 is completely entered into the main frame 51 along the slide rack (55).

As described above, when the tray 53 is completely inserted into the main frame 51 to be in the closed state, a force pressing in the horizontal direction by the horizontal protrusion 60 of the mold spring 59 is applied to the rail portion 54. At the same time, a vertical pressing force is applied by the first vertical protrusion 61 formed on the bottom surface of the upper plate 57b of the rack guide 57 to restrain the horizontal and vertical movements of the rail portion 54.

At this time, since the pressing force in the vertical direction is applied to the slide rack 55 by the second vertical protrusion 63 formed on the bottom surface of the upper plate 57b of the rack guide 57, the slide rack 55 is also restrained in the vertical direction. Will be.

Therefore, when the tray 53 is in the closed state, even if the internal excitation force generated by the rotation of the disk and the spindle motor is transmitted, the vibration of the tray 53 is suppressed and the tray 53, the slide rack 55, the rack Vibration noise in the gap existing between the guides 57 is also significantly attenuated.

In order to support these effects, the vibration test results of the drive to which the rack guide is applied and the drive to which the rack guide of the present invention is applied are shown in Table 1 below. At this time, the disk used in the vibration test is 0.5gcm.

Disc inner circle Disc outsourcing Focusing direction Tracking direction Focusing direction Tracking direction Conventional rack guide drive 0.35g or more 0.45g or more 0.35g or more 0.5g or more Drive to which the rack guide of the present invention is applied 0.25g or less 0.32g or less 0.28g or less 0.4g or less

Referring to Table 1, it can be seen that the drive to which the rack guide 57 according to the present invention is applied reduces vibration both in the vertical and horizontal directions, that is, the focusing direction and the tracking direction.

Thereafter, the spindle motor, which recognizes the closed state of the tray 53, is operated to rotate the disk. When the disk is rotated, data transfer occurs between the disk and the pickup so that a signal inherent in the disk is reproduced / recorded.

As described above, in the tray apparatus of the slim disk drive according to the present invention, the gap between the tray 53, the slide rack 55, and the rack guide 57 is still so that the front and rear movement of the tray 53 is smoothly performed. When the tray 53 is in a closed state while the tray 53 is closed, movement of the tray 53 in the horizontal direction and the vertical direction is constrained, even though the internal vibration generated by the rotation of the disk and the spindle motor is transmitted. Vibration is suppressed and at the same time there is an advantage that the vibration noise in the gap existing between the tray 53 and the slide rack 55 and the rack guide 57 is greatly attenuated.

In addition, the present invention is minimized the internal vibration of the tray 53 to reduce the vibration and noise of the entire drive to prevent the malfunction of the drive, such as a signal reproduction / recording transmission failure caused by the vibration is prevented, the noise of the drive There is an advantage that undervaluation is prevented in advance.

Claims (6)

A tray for loading and unloading the disk, which is installed to move forward and backward on the mainframe, and left and right rack guides fixed to both sides of the mainframe to guide the movement of the tray so that the tray enters the main frame in position. It is installed between the tray and each rack guide includes a left and right slide rack to assist the smooth forward and backward movement of the tray, Rail portions each having a cross section of a predetermined shape are formed at both ends of the lower end of the tray, The left and right slide racks are formed to accommodate the rail portion and slidably coupled to the rail portion, The left and right rack guides are formed to accommodate the slide rack is slidably coupled to the slide rack, Horizontal vibration preventing means and vertical vibration are applied to the rear ends of the left and right rack guides to restrain the movement of the rail part in the horizontal and vertical directions by applying a constant force toward the rail part in the horizontal direction and the vertical direction when the tray is closed. The tray device of the slim disk drive, characterized in that the prevention means are provided respectively. The method of claim 1, The horizontal anti-vibration means is formed of a mold spring having a horizontal protrusion formed at the rear end of the left and right rack guides to generate an elastic force for pressing the rail of the tray in a horizontal direction and pressing the rail to restrain the inner side of the tray. Tray device of a slim disk drive, characterized in that. The method of claim 2, The mold spring tray device of claim 1, wherein the mold spring is formed to have a thickness smaller than the thickness of the rack guide so as to be spaced apart from the main frame. The method of claim 1, The vertical vibration preventing means is a tray apparatus of a slim disk drive, characterized in that the first vertical projection formed to restrain the rail portion of the tray in the vertical direction on the lower surface of the rear end of the left and right rack guide. The method of claim 4, wherein The vertical vibration preventing means further comprises a second vertical protrusion formed on the upper and lower surfaces of the rear end of the left and right rack guide rear ends than the first vertical protrusion to press and restrain the slide rack in the vertical direction. Tray unit for slim disk drives. The method of claim 1, The upper and lower surfaces of the rear ends of the left and right rack guides restrain the movement of the rail of the tray by using the horizontal vibration preventing means and the vertical vibration preventing means, so that the left and right slide racks are not obstructed. The tray device of a slim disk drive, characterized in that each slide rack stopper is formed to limit the entry distance.