Patent Application
20140318757
1. Technical Field
The present disclosure relates to heat sinks, more particularly to a heat sink incorporating a plurality of interlocked fins.
2. Description of Related Art
It is well known that during operation of a computer, electronic component thereof such as a central processing unit (CPU) generates large amounts of heat. The generated heat must be quickly removed from the electronic component to prevent it from becoming unstable or being damaged. Generally, a heat sink is attached to the electronic component for a cooling purpose. A typical heat sink includes a base plate and a plurality of fins extending from the base plate. The base plate is attached to the electronic component to absorb heat from the electronic component, and the heat absorbed by the base plate is then dissipated to ambient air via the fins. However, the fins are easily disengaged from the adjacent fins when the assembled fins are subject to mechanical shocks.
What is needed, therefore, is an improved heat sink which overcomes the above described shortcomings.
An embodiment of a heat sink in accordance with the present disclosure will now be described in detail below and with reference to the drawings.
Referring to
Each of the fins 10 includes a main body 12 and a pair of engaging portions 14 extending outwardly from top and bottom ends of the main body 12, respectively. In every two adjacent fins 10, the engaging portions 14 of one fin 10 are correspondingly interlocked with the engaging portions 14 of another fin 10. Each engaging portion 14 includes a base 140 extending from the main body 12, at least an engaging groove 142 defined at a lateral side of the base 140, and at least an inserting rib 144 protruding outwardly from another lateral side of the base 140 opposite to the engaging groove 142. The engaging groove 142 and the inserting rib 144 both extend along a lengthways direction of the fin 10. The inserting rib 144 has a configuration in complement with that of the engaging groove 142. The number and position of the inserting rib 144 are corresponding to those of the engaging groove 142. In every two adjacent fins 10, the inserting rib 144 of the engaging portion 14 of one fin 10 is fitly inserted into the engaging groove 142 of the engaging portion 14 of another fin 10. In this embodiment of the disclosure, there are two engaging grooves 142 and two inserting ribs 144 formed on two opposite lateral sides of each engaging portion 14 of the fin 10, respectively. A cross section of the inserting rib 144 is rectangular. The main bodies 12 of the fins 10 are parallel to and spaced from each other. A flow channel 120 is defined between the main bodies 12 of every two adjacent fins 10.
In each fin 10, each engaging portion 14 further includes at least a cutout 1440 recessed inwardly from an outer periphery of the inserting rib 144, and a protruding block 1420 formed in the engaging groove 142. The protruding block 1420 has a configuration in complement with that of the cutout 1440. The number and position of the protruding block 1420 are both corresponding to those of the cutout 1440. In this embodiment of the disclosure, there are two protruding blocks 1420 formed in the engaging groove 142 opposite to each other, and two cutouts 1440 formed in two opposite sides of the inserting rib 144, respectively. A cross section of the protruding block 1420 is semicircular. The protruding block 1420 extends along a direction which the engaging groove 142 extends along. The cutout 1440 extends along a direction which the inserting rib 144 extends along. In every two adjacent fins 10, the inserting rib 144 of the engaging portion 14 of one fin 10 is fitly inserted into the engaging groove 142 of the engaging portion 14 of another fin 10, and the protruding block 1420 is correspondingly stuck in the cutout 1440.
Alternatively, the protruding block 1420 could also be formed on the outer periphery of the inserting rib 144, and the cutout 1440 is correspondingly formed in the engaging groove 142.
The engaging portions 14 of the fins 10 of the heat sink 100 are aligned with and coplanar with each other, whereby a bottom/top face of the heat sink 100 is planar.
Referring to
The first engaging portion 14a includes a first base 140a extending from the first main body 12a, at least a first engaging groove 142a defined at a lateral side of the first base 140a. The second engaging portion 14b includes a second base 140b extending from the second main body 12b, and at least a second inserting rib 144b protruding outwardly from a lateral side of the second base 140b. The second inserting rib 144b has a configuration in complement with that of the first engaging groove 142a. The number and position of the second inserting rib 144b are corresponding to those of the first engaging groove 142a. In assembly, the second inserting rib 144b of second fin 10b is fitly inserted into the first engaging groove 142a of the first fin 10a. A cross section of the second inserting rib 144b is rectangular. The first engaging groove 142a extends along a lengthways direction of the first fin 10a. The second inserting rib 144b extends along a lengthways direction of the second fin 10b.
In the first fin 10a, the first engaging portion 14a further includes at least a first protruding block 1420a formed in the first engaging groove 142a. In the second fin 10b, the first engaging portion 14a further includes at least a second cutout 1440b recessed inwardly from an outer periphery of the second inserting rib 144b. The first protruding block 1420a has a configuration in complement with that of the second cutout 1440b. The number and position of the first protruding block 1420a are both corresponding to those of the second cutout 1440b. A cross section of the first protruding block 1420a is semicircular. The first protruding block 1420a extends along a direction which the first engaging groove 142a extends along. The second cutout 1440b extends along a direction which the second inserting rib 144b extends along. In assembly, the second inserting rib 144b of second fin 10b is fitly inserted into the first engaging groove 142a of the first fin 10a, and the first protruding block 1420a is correspondingly stuck in the second cutout 1440b.
Alternatively, the first protruding block 1420a could also be formed on the outer periphery of the second inserting rib 144b of the second fin 10b, and the second cutout 1440b is correspondingly formed in the first engaging groove 142a of the first fin 10a.
It is to be further understood that even though numerous characteristics and advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2013101444147 | Apr 2013 | CN | national |
