Patent Application
20090050308
1. Field of the Invention
The present invention relates to a cooling device for an electronic component, and more particularly to a base structure for a heat sink.
2. Description of the Prior Art
Conventional heat sinks used on the computer host have various types and configurations, but basically comprise a plurality of heat pipes with both ends connected to a plurality of fins, and a base. Heat sink bases are also various in forms and structures. One of the base structures, as shown in
The heat sink base structure of such type has the following disadvantages. If the assembly position is inconsistent with the legs 31, the base of the heat sink cannot be installed since the legs 31 are unadjustable in angle and position.
Another base structure for a heat sink is shown in
Such type of heat sink base is difficult to manufacture, since forming the sliding grooves 11 with the stop flanges 12 in the heat conducting plate 10 requires the processes of cutting, grinding, machining, milling, punching, pressing, and etc, and each process has some difficulties and complexities. The manufacturing difficulties always lead to the increase of cost.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary objective of the present invention is to provide a low cost and easily produced base structure for a heat sink the legs of which can be adjusted to meet the different assembly requirements.
To achieve the above objective, the base structure comprises: a heat conducting plate, a positioning piece, a plurality of legs and fasteners. The heat conducting plate is assembled together with the heat conducting plate to clamp the heat pipes between them. At each of two opposite side walls of the heat conducting plate are formed a convex portion and a concave portion, respectively, the convex portion and the concave portion of the same side being adjacent to each other. At each of two opposite side walls of the positioning piece are formed a flange and a groove for engaging with the convex portion and the concave portion of the heat conducting plate, respectively, the convex portion of the heat conducting plate and the flange at a corresponding side of the positioning piece are opposite each other, and the concave portion of the heat conducting plate and the groove at a corresponding side of the positioning piece are opposite each other to define a guiding channel. The legs are positioned in the guiding channel by the fasteners.
The fasteners are movable along the guiding channel along with the legs, and the legs are rotatable around the corresponding fastener, so that the positions of the legs are adjustable. Furthermore, the guiding channels is formed by the concave portion of the heat conducting plate and the groove of the positioning piece, and the heat conducting plate and the positioning piece can be produced separately, thus making it easier to produce the guiding channel.
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention.
Referring to
The heat conducting plate 10 includes a contacting surface 13 in which is formed a plurality of grooves 131 for accommodation of heat pipe A. At each of two opposite side walls of the heat conducting plate 10 are formed a convex portion 14 and a concave portion 15, respectively. These convex portions 14 and concave portions 15 are located at both sides of the contacting surface 13. And the convex portion 14 and the concave portion 15 of the same side are adjacent to each other.
The positioning piece 50 has a positioning surface 51 in which is formed a plurality of concave portions 511. The contacting surface 13 of the heat conducting plate 10 cooperates with the positioning surface 51 of the positioning piece 50 to position the heat pipes A in such a manner that the heat pipes A are clamped between the grooves 131 of the heat conducting plate 10 and the concave portions 511 of the positioning piece 50. At each of two opposite side walls of the positioning piece 50 are formed a flange 52 and a groove 53 for engaging with the convex portion 14 and the concave portion 15 of the heat conducting plate 10, respectively. The convex portion 14 of the heat conducting plate 10 and the flange 52 at the corresponding side of the positioning piece 50 are opposite each other, and the concave portion 15 of the heat conducting plate 10 and the groove 53 at the corresponding side of the positioning piece 50 are opposite each other to define a guiding channel D. In this embodiment, the convex portion 14 is located in the middle of the side wall of the heat conducting plate 10. And a depressed portion 54 is defined in the positioning surface 51 of the positioning piece 50.
Each leg 40 has a through hole 41 defined at one end thereof. Four fasteners 60 pass through the through holes 41 to position the legs 40 into the guiding channel D. In this embodiment, each fastener 60 includes a nut 61 and a screw 62. The nuts 61 are received in the guiding channel D. The screws 62 are screwed through the through holes 41 of the legs 40 into the nuts 61. The screws 62 cooperate with the convex portions 14 of the heat conducting plate 10 and the flanges 52 of the positioning piece 50 to clamp the legs 40, and the screws 62 are pressed into the depressed portion 54 of the positioning piece 50.
It is understood from the above description that each of the guiding channels D is formed by the concave portion 15 of the heat conducting plate 10 and the groove 53 of the positioning piece 50. And the heat conducting plate 10 and the positioning piece 50 can be produced separately, thus making it easier to produce the guiding channel D.
In addition, each legs 40 is rotatable around the screw 62 of the fastener 60, and the nuts 61 are slidable along the guiding channels D, so that the position and the angle of the legs 40 can be adjusted to meet the different assembly requirements.
Furthermore, the base of the heat sink can also be as shown in
It can also be as shown in
It can also be as shown in
While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
