Heat sink structure

#The present application is a continuation of U.S. patent application Ser. No. 13/610,254, filed on Sep. 11, 2012, titled Heat Sink Structure and Manufacturing Method Thereof, listing Sheng-Huang Lin and Kuo-Sheng Lin, as inventors. This application claims the priority benefit of Taiwan patent application number 101127729 filed on Aug. 1, 2012.

#1. Field of the Invention

#The present invention relates generally to a heat sink structure and a manufacturing method thereof, and more particularly to an annular heat sink structure and a manufacturing method thereof.

#The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein:

#FIG. 1 is a perspective exploded view of the present invention;

#FIG. 2 is a perspective assembled view of the present invention;

#Please refer to FIGS. 1 and 2. FIG. 1 is a perspective exploded view of the present invention. FIG. 2 is a perspective assembled view of the present invention. The heat sink 10 of the present invention includes a main body 12 and multiple first radiating fins 13 connected to an outer circumference of the main body 12. The main body has a first end 121 and a second end 122.

#As shown in FIG. 1, the first and second ends 121, 122 of the main body 12 define a longitudinal direction a. Referring to FIG. 4B, multiple main body connection sections 123 are formed on the surface of the main body and extend from the first end 121 to the second end 122 in the longitudinal direction a. (The main body connection sections 123 are distributed over the outer circumference of the main body equivalently or inequivalently). The main body 12 is formed with multiple thrust sections 124 near the first end 121 in communication with the main body connection sections 123 (as shown in FIG. 4B). The thrust sections 124 make it easier to fit the first radiating fins 13 into the main body connection sections 123 from the first end 121 of the main body 12. The form of the thrust sections 124 is varied with the form of the main body connection sections 123. This will be detailedly described hereinafter.

#As shown in FIGS. 1 and 2, the multiple first radiating fins 13 are annularly arranged around the surface of the main body 12. Each first radiating fin 13 has a first connection section 131 corresponding to the main body connection section 123 of the main body 12. The first connection section 131 can be thrust into the main body connection section 123 from the first end 121 to the second end 122 in the longitudinal direction a so as to integrally connect the first radiating fin 13 with the main body 12.