KR20020069547A - Disk driver with tremble preventing structure for tray - Google Patents

Abstract

PURPOSE: A disc drive with a structure for preventing the vibration of a tray is provided to integrate the vibration preventing structures to a housing, thereby reducing the required parts and the working procedure. CONSTITUTION: A disc drive with a structure for preventing the vibration of a tray includes guide grooves(63) formed at both sides of the tray(60), a plurality of guide protrusions(43) formed at both sides of a housing(40) by a predetermined interval to be inserted into the guide grooves, concave parts(45) provided between the guide protrusions by a predetermined depth, and a plurality of vibration preventing structures(46) integrated with the concave parts for applying elasticity to the guide grooves for restraining the deviation of the guide grooves with respect to the guide protrusions when loading or unloading the tray to prevent the vibration.

Description

Disk drive with tremble preventing structure for tray}

The present invention relates to a disk drive, and more particularly, to a tray anti-shake structure of a disk drive for preventing the shaking of the disk tray during loading and unloading.

Generally, a disc drive is a device for recording information on a recording medium such as a compact disc (CD), a digital video disc (DVD), or reproducing the recorded information.

As shown in FIG. 1, the disc drive serves as an entire frame and includes a chassis housing 10 in which the deck assembly 20 is installed, and a tray 30 for transferring a disc into the chassis housing 10. . The deck assembly 20 includes a deck plate 21, a turn table 23 mounted on the deck plate 21, on which a disk conveyed by the tray 30 is seated, and recording or reproducing information on the disk. An optical pickup 25 is provided.

The chassis housing 10 and the tray 30 are provided with tray transfer means for loading or unloading the tray 30 into the chassis housing 10. In general, the tray transfer means may include a rack gear 31 provided on the bottom surface of the tray 30 and a tray gear 30 installed on an upper surface of the chassis housing 10 to rotate in a state of meshing with the rack gear 31. A drive gear 11 for feeding back and forth is provided.

Meanwhile, the chassis housing 10 and the tray 30 are provided with guide means for guiding the transfer of the tray 30 when loading and unloading the tray 30. As guide means, guide grooves 33 are formed on both bottom edges of the tray in the conveying direction of the tray 30, and guide protrusions protruding from the upper surface of the chassis housing 10 to be inserted into the guide grooves 33. (13) is provided. As shown in the drawing, the guide protrusions 13 are installed to be inserted into the guide grooves 33 on both sides of the tray 30 at predetermined intervals. In particular, the guide protrusions 13 provided on the left side of the drawing are installed to be in close contact with the right side of the guide groove 33 of the tray 30 so as to guide the conveying direction of the tray, and the guide protrusions 13 provided on the right side of the drawing. In order to prevent the tray 30 from sagging, the upper surface thereof is installed to be in close contact with the bottom surface of the chassis housing 10.

However, in the conventional disk drive having such a configuration, as described below, there is a problem in that the tray 30 is shaken during loading and unloading of the tray 30.

2 is a view showing the direction of the tangential force acting on the contact point of the drive gear 11 and the rack gear 31 in the conventional disk drive shown in FIG.

Referring to FIG. 2, there is some margin between the guide protrusion 13 and the guide groove 33 in order to allow the tray 30 to be smoothly transferred. The thread of the rack gear 31 has an angle of about 20 degrees, and the thread of the drive gear 11 also has an angle of about 20 degrees. Therefore, when the tray 30 is loaded into the housing 10, the threads of the rack gear 31 and the drive gear 11 are engaged with each other so that a tangential force acts on the contact point. That is, the tray 30 receives a force in the direction of about 20 ° (arrow A direction) to the left with respect to the loading direction, and at the time of unloading, about 20 ° to the right with respect to the unloading direction (arrow B direction). Tangential force with). Therefore, the tray 30 tries to be distorted in the direction in which the tangential force acts by using the guide protrusion 13 as a supporting point. Thus, tremors occur in the tray 30. Such tremor of the tray 30 becomes more severe in a state in which the tray 30 is far out of the chassis housing 10.

Therefore, in order to prevent the shaking of the tray, a separate structure is required. In the past, a spring was used for this purpose. The spring is installed in the housing to apply an elastic force to the tray in one direction to prevent the shaking during loading and unloading of the tray. However, in the case of using the spring in this way, not only the purchase cost of itself, but also a separate time is required for the assembly thereof, and there is a problem in that the overall manufacturing cost of the disk drive is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and provides a disk drive having a tray anti-shake structural means that can effectively prevent the shaking of the tray by being integrally molded to the housing and also reduce the manufacturing cost. The purpose is.

1 is a perspective view showing the structure of a conventional disk drive,

2 is a view showing the direction of the tangential force acting on the contact point of the drive gear and the rack gear in the disk drive shown in FIG.

3 is a perspective view showing the structure of a disk drive according to the present invention;

4 is a plan view showing a state in which the tray of the disk drive shown in FIG. 2 protrudes from the housing;

5 is a cross-sectional view taken along the line D-D 'shown in FIG. 4;

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

40.Housing 41 ... Drive gear

42.Driver 43 ... Guide projection

45 recesses 46 anti-shake structure

50 ... deck assembly 60 ... tray

61 rack gear 63 guide groove

Disc drive according to the present invention to achieve the above object,

A guide groove provided at both sides of the tray to guide the tray when the tray is loaded and unloaded into the housing, and a plurality of guide protrusions provided at both sides of the housing at predetermined intervals to be inserted into the guide groove. A disc drive having a guide structure and an anti-shake structure for preventing the tray from shaking around the guide protrusion, the disc drive comprising: a recess provided at a predetermined depth between the guide protrusions of the housing; A plurality of anti-vibration structures integrally formed on the bottom surface of the recess to provide an elastic force to the outer wall of the guide groove and having a predetermined height from the bottom surface; It is characterized by including.

According to the invention, the tip portion of the anti-shake structure is characterized in that it is located lower than the tip portion of the guide projection.

Hereinafter, preferred embodiments of a disk drive according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic perspective view showing a disk drive having a tray anti-shake structure according to the present invention, and FIG. 4 is a plan view of the disk drive shown in FIG.

3 and 4, a disk drive according to the present invention includes a housing 40 and a tray 60.

The housing 40 constitutes the entire frame of the disc drive, and the deck assembly 50 is installed, and the deck assembly 50 is installed on the deck plate 51 and transported by the tray 60. A turntable 53 on which the mounted disk is seated and an optical pickup 55 for recording or reproducing information on the disk.

The tray 60 accommodates a disk and is loaded and unloaded with respect to the housing 40.

The housing 40 and the tray 60 are provided with transfer means for loading and unloading the tray 60 into the housing 40. The transfer means is composed of a drive means 42 is installed on the upper surface of the housing 40, the drive gear 41 is installed, and a rack gear 61 provided on the bottom surface of the tray 60. The drive gear 41 and the rack gear 61 have teeth having the same thread angle (approximately 20 degrees) and are engaged with each other. Accordingly, when the driving gear 41 is rotated by the driving means 42, the rack gear 61 engaged with the driving gear 41 is transferred, and the tray 60 is loaded and unloaded with respect to the housing 40. .

On the other hand, a plurality of guide protrusions 43 are formed at both edges of the housing 40 which are located in the direction in which the tray 60 is loaded and unloaded, respectively. In addition, a guide groove 63 in which the guide protrusions 43 are inserted at both edges of the tray 60 in the direction in which the tray 60 is loaded and unloaded with respect to the housing 40 is provided on the bottom surface of the tray 60. Each is provided.

Therefore, when the tray 60 is loaded and unloaded into the housing 40, the guide protrusion 43 is inserted into the guide groove 63, and the guide groove 63 is along the guide protrusion 43. Is sliding.

In addition, a recess 45 having a predetermined depth and a predetermined width is formed between the plurality of guide protrusions 43 provided in the housing 40.

The recess 45 is provided with a tray anti-shake structure 46 for preventing the tray 60 from shaking when the tray 60 is loaded and unloaded with respect to the housing 40.

FIG. 5 is a cross-sectional view taken along the line D-D 'of FIG. 4.

Referring to FIG. 5, the tray anti-shake structure 46 is integrally formed on the bottom surface of the recess 45 to have a predetermined height from an upper surface of the housing 40, and a plurality of trays are installed at predetermined intervals. It is.

Since the tray anti-shake structure 46 is integrally molded to the recess 45, it is not necessary to separately install the anti-shake structure 46 after molding the housing 40 as in the related art, thereby reducing the number of parts. Not only that, but also the work process can be reduced.

Since the tray anti-shake structure 46 itself serves as an elastic body having elastic force, the material preferably has elastic force, and is preferably made of the same material as the housing 40. Do.

The tray anti-shake structure 46 is formed to have a predetermined height from the bottom surface of the recess 45 to the top surface of the housing 40, and the height is lower than the tip of the guide protrusion 43. It is desirable to. That is, the tip end of the tray anti-shake structure 46 is formed to be at a position lower than the tip end of the guide protrusion 43. The tray anti-shake structure 46 serves to apply tension to the guide groove 63 in a direction to suppress rotation of the guide protrusion 43 when the tray 40 is loaded and unloaded. If the height is too high, the shaking of the tray 60 may be prevented, but the tension applied to the guide groove 63 may be so strong that the tray 60 may not be loaded or unloaded into the housing 40. Because it can. Therefore, the tension applied to the guide groove 63 can be adjusted to a predetermined range by appropriately adjusting the height of the tray anti-shake structure 46.

The shape of the tray anti-shake structure 46 is configured to have a quadrangular shape in the embodiment of the present invention, but this may be any structure that can apply tension to the guide groove 63 with its own elastic force. Therefore, it can be transformed into other shapes, for example cylindrical.

In addition, the tray anti-shake structure 46 may be installed at both edges of the housing 40. However, since the drive gear 41 and the rack gear 61 are meshed with each other to load and unload the tray 40 with respect to the housing 60, the cause of the shaking of the tray 40 may be caused by the drive gear. (41) is on the side where it is installed. Therefore, it is desirable to provide a tray anti-vibration structure for preventing this.

The operation of the tray shake prevention structure according to the embodiment of the present invention configured as described above will be described with reference to the drawings.

3 and 4, when an external power source is applied to the driving means 42 and the driving gear 41 rotates, the rack gear 61 engaged with the driving gear 41 is engaged. Thus, the tray 60 is loaded or unloaded with respect to the housing 40 according to the rotational direction of the drive gear 41.

When the tray 60 is loaded into the housing 40, the rack gear 61 and the drive gear 41 have a thread angle of approximately 20 degrees, so that the tangential force acting on the contact surface is the same angle. Due to the operation of the tray 60 is to be rotated about the guide protrusion 43. At this time, the anti-shake structure 46 is in contact with the guide groove 63 to apply a tension in the outward direction (arrow C direction) to the outer side 63a of the guide groove 63 to rotate the tray 60. Prevent it from doing Therefore, rotation of the tray 60 is suppressed and shaking is prevented.

In addition, even when the tray 60 is unloaded from the housing 40, the anti-shake structure 46 is in contact with the outer side 63a of the guide groove 63 to act as a tension in the direction of the arrow B to the tray Prevent 60 from trying to rotate.

As described above, the disc drive according to the present invention can effectively prevent the shaking of the tray by integrally forming the anti-vibration structure in the housing, and also has the effect of reducing the number of parts and reducing the work process.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary and will be understood by those skilled in the art that various modifications and variations can be made therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (2)

A guide groove provided at both sides of the tray to guide the tray when the tray is loaded and unloaded into the housing, and a plurality of guide grooves provided at both sides of the housing at predetermined intervals so as to be inserted into contact with one wall of the guide groove. A disc drive comprising a guide structure having a guide protrusion and an anti-shake structure for preventing the tray from shaking. The anti-vibration structure is integrally formed on the bottom surface of the recess provided at a predetermined depth between the guide protrusions of the housing, characterized in that made of a predetermined height from the bottom surface to apply an elastic force to the other side wall of the guide groove. Disk drive. The method of claim 1, And the tip portion of the anti-vibration structure is lower than the tip portion of the guide protrusion.