Heat-dissipating structure of disc drive

Abstract

A heat-dissipating structure of a disc drive comprises a tray and a diversion plate. The tray has a body with a concavity loading surface for loading a disc to be in and out the disc drive, and the loading surface has a central hole. Further the diversion plate is disposed on one side of the loading surface, and connected to the loading surface, wherein the diversion plate extends downward and slopes from the connection of the diversion plate and the loading surface.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Other features and advantages of this invention will become more apparent in the following detailed description of the preferred embodiments of this invention, with reference to the accompanying drawings, in which:

FIG. 1 illustrates a schematic view of a disc drive based on prior arts;

FIG. 2 a illustrates a schematic view of a first embodiment of a heat-dissipating structure of a disc drive of the present invention;

FIG. 2 b illustrates a schematic cross sectional view of a line aa′ of FIG. 2a;

FIG. 2 c illustrates a schematic cross sectional view of a line bb′ of FIG. 2a;

FIG. 3 illustrates a schematic view of a second preferred embodiment of the heat-dissipating structure of the disc drive of the present invention;

FIG. 4 a illustrate a schematic view of a third preferred embodiment of the heat-dissipating structure of the disc drive of the present invention; and

FIG. 4 b illustrates a schematic cross sectional view of a line bb′ of FIG. 4a.

DETAILED DESCRIPTIONS OF THE PREFERRED EMBODIMENT

The present invention provides a heat-dissipating structure of a tray applied to a disc drive, that can lead airflow produced by a rotated disc into a descent part of the tray. Airflow between the tray and the disc is thus moved downward so as to increase the flowing speed and the flowing quantity of the airflow flowing through an optical pickup unit (OPU), and then improve the heat-dissipating ability of the electronic element in the disc drive.

Please refer to FIGS. 2a to 2c, which illustrate a schematic view of a first embodiment of a heat-dissipating structure of a disc drive of the present invention, a schematic cross sectional view of a line aa′ of FIG. 2a, and a schematic cross sectional view of a line bb′ of FIG. 2a. The heat-dissipating structure of the present invention comprises a tray 20 and a diversion plate 21. The tray 20 is movably mounted on the disc drive for loading a disc. The tray 20 comprises a body 201 having a first concavity loading surface 2010, and inside of the first loading surface 2010 has a second concavity loading surface 2012. The first loading surface 2010 and the second loading surface 2012 form a disc-containing area, which has a central hole 2014 to let the motor and the OPU pass through.

The diversion plate 21 is mounted on one side of the loading surfaces 2010 and 2012, and comprises an inclined plane 210 between the diversion plate 21 and the loading surfaces 2010 and 2012 as a buffer area of the connection of both. It is to be noted that the surface of the diversion plate 21 is lower than the loading surfaces 2010 and 2012, and the diversion plate 21 is sloped downward along the rotating direction of the disc.

Please refer to FIGS. 2b and 2c. For the embodiment, the diversion plate 21 is sloped downward from the loading surfaces 2010 and 2012 to a back end 202 of the tray 20, and the diversion plate 21 is also sloped downward from the peripherals of the loading surfaces 2010 and 2012 to the central hole 2014. In other words, the diversion plate 21 is about circularly sloped downward and toward the central hole 2014.

Hence, when the disc is in rotation, the airflow driven by the rotating is moved downward along the diversion plate 21 to increase the speed and the quantity of the airflow passing through the OPU for promoting the heat-dissipating effect to the OPU.

The body 201, the loading surfaces 2010 and 2012, and the diversion plate 21 are integrated as one member and made of the plastics. The member normally adopts the way of an eject-rod or eject-board of the injection molding to de-molded.

Please refer to FIG. 3, which illustrates a schematic view of a second preferred embodiment of the heat-dissipating structure of the disc drive of the present invention. With the differences of the second preferred embodiment to the first preferred embodiment, the heat-dissipating structure of the disc drive further includes an extended part 212 so as to increase the area thereof. The extended part 212 is a continuous of the diversion plate 21 and extended toward the back end 202 of the tray 20. The extended part 212 is sloped downward and toward the central hole 2014.

The slope direction of the diversion plate 21 in this embodiment is similar to the first embodiment, but the diversion area is larger. Therefore, when the airflow flows to the diversion plate 21 and continuously goes to the extended part 212, comparatively the flow speed and the quantity of the airflow are increased so as to enhance the heat-dissipating effect.

Please refer to FIGS. 4a and 4b, which illustrate a schematic view of a third preferred embodiment of the heat-dissipating structure of the disc drive of the present invention and a schematic cross sectional view of a line bb′ of FIG. 4a. For the preferred embodiment, the heat-dissipating structure of the disc drive further comprises a diversion baffle 2016. The diversion baffle 2016 and the diversion plate 21 are set on one side of the loading surfaces 2010 and 2012, and connect to the loading surfaces 2010 and 2012.

Please be noted that the diversion baffle 2016 is sloped downward and toward the central hole 2014. The surface of the diversion baffle 2016 is higher than that of the diversion plate 21, and there is a gap between the diversion baffle 2016 and the diversion plate 21. Therefore, the airflow driven by the rotated disc can be led out by the diversion baffle 2016 and the diversion plate 21 and flow through the gap. The separated structure speeds up the flow rate in order to effectively direct the airflow to the OPU for better dissipation.

The heat-dissipating structure in the present invention makes a height difference on the surface of the tray of the disc drive. By ways of the airflow driven by the rotated disc and the non-slip boundary condition generated on the surface of the tray, the air may flow downward and through the height difference so as to increase the flow rate of the lower layer airflow; simultaneously, the air may be led to a location with a heat source, such as the OPU. Therefore, the heat can be brought out effectively so as to enhance the heat-dissipation effect of the disc drive.

Claims

1. A heat-dissipating structure of a disc drive, comprising: a tray having a body with a concavity loading surface for loading a disc to be in and out the disc drive, and the loading surface having a central hole; anda diversion plate being disposed on one side of the loading surface and connected to the loading surface;wherein the diversion plate extends downward and slopes from the connection of the diversion plate and the loading surface.

2. The heat-dissipating structure according to claim 1, wherein the loading surface and the diversion plate are integrated as one member.

3. The heat-dissipating structure according to claim 1, wherein the surface of the diversion plate is lower than the loading surface.

4. The heat-dissipating structure according to claim 1, wherein the diversion plate is downward sloped and toward the central hole.

5. The heat-dissipating structure according to claim 1 further comprising an extended part connecting to the diversion plate, the extended part is formed from the diversion plate to a back end of the tray, and the extended part is downward sloped and toward the central hole.

6. The heat-dissipating structure according to claim 5, wherein the loading surface, the diversion plate, and the extended part are integrated as one member.

7. The heat-dissipating structure according to claim 1 further comprising a diversion baffle, which connects to the loading surface.

8. The heat-dissipating structure according to claim 7, wherein the surface of the diversion baffle is higher than that of the diversion plate, and a gap is between the diversion baffle and the diversion plate.

9. The heat-dissipating structure according to claim 7, wherein the loading surface, the diversion plate, and the diversion baffle are integrated as one member.

10. The heat-dissipating structure according to claim 7, wherein the diversion baffle is downward sloped and toward the central hole.