TWI395540B - Heat sink assembly - Google Patents

Description

Heat sink combination

The present invention relates to a heat sink assembly, and in particular to a heat sink assembly for electronic components.

In recent years, with the development of the electronics industry, the performance of electronic components has been continuously improved, the computing speed has become faster and faster, the computing speed of the internal chipset has been continuously increased, the number of wafers has been increasing, and the amount of heat emitted by the wafers has increased accordingly. If the heat is not dissipated in time, the performance of the electronic components will be greatly affected, and the operation speed of the electronic components will be lowered. As the heat is accumulated, the electronic components may be burnt, and therefore the electronic components must be dissipated.

U.S. Patent No. 6,667,884 discloses a conventional heat sink assembly comprising a heat sink mounted to an electronic component and a clip for securing the heat sink to the circuit board. When an electronic component is in operation, the heat it generates is dissipated by the heat sink to the surrounding air, ensuring its proper operation.

In order to further improve the heat dissipation efficiency of the radiator, a fan is installed on the top of the radiator, and the heat absorbed by the radiator is quickly taken away by the high-speed airflow generated by the fan.

When there are multiple heat sources on the board, multiple heat sinks are required to dissipate them separately. However, once a conventional fan is mounted on a heat sink, its airflow can only be blown to the heat sink where the fan is located, that is, it can only dissipate heat to a single electronic component, and cannot be blown to other electronic components or mounted on other electronic components. The radiator on it. If you want to improve the heat dissipation of other electronic components For efficiency, you need to add an extra fan to dissipate it. Therefore, it is not economical to use such a heat sink combination with respect to a circuit board having a plurality of heat sources, and the overall cost is high.

In view of this, it is necessary to provide a heat sink assembly with a fan that can simultaneously blow a plurality of electronic components or heat sinks to dissipate heat.

A heat sink assembly includes a heat sink, a first fixing device, a second fixing device and a fan. The first fixing device is fixed to one side of the heat sink and pressed against one side of the fan to make the fan The side extends beyond the heat sink and the second securing means is fixed to the other side of the heat sink opposite the first securing means and against the other side of the fan.

Compared with the prior art, the fan of the heat sink assembly of the present invention has a portion extending beyond the heat sink, and a part of the airflow generated by the heat sink can directly blow the heat sink, and another part of the air flow can be blown around the heat sink. When the heat sink is placed on a heat source, the airflow generated by the fan will simultaneously dissipate heat from the heat source and other heat sources located around the heat source. Thus, the heat sink assembly of the present invention can be applied to multiple heat sources without the need for an additional fan, and the overall cost is low.

As shown in FIG. 1 and FIG. 2, the heat sink assembly of the present invention is used to simultaneously dissipate heat from a plurality of electronic components (not shown) mounted on a circuit board 30, including heat dissipation mounted on one of the electronic components. a fan assembly 40 (not shown), a fan 40 mounted on the top of the heat sink assembly, and fixed to opposite sides of the heat sink assembly and pressed against opposite sides of the fan 40 The first fixing device 50 and the second fixing device 60. Another heat sink 70 is mounted on another electronic component adjacent to the electronic component to absorb the heat generated thereby.

The heat sink assembly includes a heat sink 10 disposed on the electronic component and a fastening module 20 for fixing the heat sink 10 to the circuit board 30. The heat sink 10 includes a base (not shown) in contact with the electronic component and a plurality of fins 12 extending vertically upward from the base. The fins 120, 122 located near the middle of the base and on both sides of the base are fork-shaped, wherein the fins 122 located near the middle of the base are branched from the upper portion, and the fins 120 on the longitudinal sides of the base are from the middle. Start bifurcation. The bifurcations of the fins 120 and 122 are provided with circular screw holes 1200 and 1220 for tapping the self-tapping screws 80. The fastening module 20 includes a fixing module 22 and a fixing device 24 . The fixing module 22 is fixed on the circuit board 30 and houses the heat sink 10 therein. One part of the fixing device 24 is combined. To the other side of the fixed module 22 (see FIG. 4), the other portion is pressed against the top of the heat sink 10 and its end is bent downward to be engaged with the lateral side of the fixed module 22, thereby The heat sink 10 is fixed to the electronic component.

Referring to FIG. 3 , the first fixing device 50 is located on a lateral side of the heat sink 10 , and includes a supporting portion (not labeled) fixed to the heat sink 10 and two fastening members pivotally connected to the supporting portion. Part 58. The support portion further includes a vertically-shaped rectangular fixing piece 52, two horizontal beams 54 extending horizontally from the bottom of the fixing piece 52, and a joint portion 56 coupled to the free ends of the two horizontal beams 54. The fixing piece 52 defines two through holes 520 corresponding to the screw holes 1220 of the fins 122 of the heat sink 10 for the self-tapping screws 80 to pass through and fix the first fixing device 50 to the heat sink 10. The combination The portion 56 includes a rectangular plate body 560 horizontally connected to the ends of the two beams 54. The two ends of the plate body 560 extend vertically upwardly from the two symmetrically connected connectors 562 and from the inner side of the plate body 560. The two structurally different connecting bodies 564, 566 are formed vertically, wherein the two structurally different connecting bodies 564, 566 are located between the two transverse beams 54, and the symmetric two connecting bodies 562 are located at the two transverse beams 54. On both sides. The three connecting bodies 562, 564 are all in the same vertical plane; while the other connecting body 566 has only the lower portion 5660 in the vertical plane, and the upper portion 5662 is separated from the vertical surface by a distance from the vertical plane, thereby When the fan 40 (FIG. 4) is placed on the first fixing device 50, the upper portion 5662 of the other connecting body 566 will sandwich the side wall 42 of the fan 40 together with the connecting body 564, in other words, the fan 40. The thickness of the side wall 42 is exactly equal to the horizontal distance between the upper portion 5662 of the other connector 566 and the connecting body 564. The receiving body 568 is bent inwardly at the top of the connecting body 562 at both ends of the plate body 560 to carry the fan 40. The outer side of the plate body 560 is bent inwardly and vertically to define six mutually spaced hooks 5600. The four hooks 5600 located at the two ends of the plate body 560 respectively correspond to the two connecting bodies 562, and are located at the central portion of the plate body 560. The clasp 5600 corresponds to the two connecting bodies 564, 566. The upper portion of the connecting body 566 is also bent in a horizontally inwardly opposite direction to the two symmetrical clasps 5664. The buckle 5600 is used for the corresponding portion of the fastening portion 58 to be locked, so that the fastening portion 58 can be pivoted around the support portion; the buckle 5566 is used for the other corresponding portion of the fastening portion 58 The button is inserted into the support portion.

Each of the fastening portions 58 is integrally bent by an elastic metal rod, and includes a first pivoting portion 584 disposed horizontally and a receiving portion located at the plate body. a second pivoting portion (not shown) of the outermost clasp 5600 of the 560, a connecting portion 582 connecting the opposite ends of the first pivoting portion 584 and the second pivoting portion, and an upwardly formed first pivot An operation portion 586 at the other end of the rotating portion 584 and a pinching portion 580 formed upward at the other end of the second pivot portion. The length of the first pivoting portion 584 is greater than the length of the second pivoting portion, and is embedded in the other two hooks 5600 adjacent to the hooks 5600 at the end of the plate body 560, thereby being common to the second pivoting portion. The fastening portion 58 is pivotally connected to the support portion such that the fastening portion 58 can pivot about the hooks 5600. The operating portion 586 is used for snapping into the hook 5566 formed on the connecting body 566, thereby engaging the engaging portion 58 on the supporting portion. The connecting portion 582 further includes two rods 5822 that are parallel to each other and perpendicular to the first pivoting portion 584 and a pressing portion 5820 that is formed obliquely downward from the top end of the two rods 5822, wherein the two rods 5822 are used for The fan 40 is pushed inward against the bottom corner 420 of one side of the fan 40; the pressing portion 5820 is used to press the bottom corner 420 of the fan 40 to apply pressure to the fan 40, thereby fixing the fan 40 to the fan 40. On the support. The pinching portion 580 is located at an end region of the plate body 560 for preventing the engaging portion 58 from falling out of the clasp 5600.

Referring to FIG. 2 and FIG. 5 , the second fixing device 60 is located on the other lateral side of the heat sink 10 and includes a fixing piece 62 and two arm portions 64 extending horizontally inward from two ends of the fixing piece 62 . . Two opposite holes 620 are defined in the opposite ends of the fixing piece 62 for the self-tapping screws 80 to pass through and screwed into the screw holes 1200 of the fins 120 to fix the second fixing device 60 to the heat sink 10 . On the other side of the lateral direction, the two arm portions 64 are placed above the heat sink 10. The end of each arm portion 64 is divided into two parts along the center line: wherein the inner portion remains unchanged to form a positioning piece 640; The outer portion is bent upwardly to form a pressing piece 642. Thus, when the fan 40 is mounted on the heat sink 10, the pressing piece 642 and the positioning piece 640 will collectively sandwich the bottom corner 440 of the fan 40. (Fig. 5), thereby fixing the other side of the fan 40 to the heat sink 10.

Referring to FIG. 2 to FIG. 5 again, when the heat sink assembly is installed, the heat sink assembly is first fixed on the electronic component; then, the self-tapping screw 80 is passed through the through hole 520 of the first fixing device 50 to be screwed to the heat sink. 10, the screw hole 1220, so that the first fixing device 50 is fixed to the lateral side of the heat sink 10, while the self-tapping screw 80 is passed through the through hole 620 of the second fixing device 60 and screwed to the heat sink 10 In the screw hole 1200, the second fixing device 60 is fixed to the other side of the radiator 10; after that, the two fastening portions 58 of the first fixing device 50 are rotated to the horizontal orientation; and the fan 40 is placed on the radiator. The top of the 10 is placed on the second receiving body 568 of the first fixing device 50, and the side wall 42 is sandwiched between the upper portion 5662 of the connecting body 566 of the first fixing device 50 and the connecting body 564. The other side wall (not shown) is placed on the positioning piece 640 of the second fixing device 60; finally, the two fastening portions 58 of the first fixing device 50 are rotated inwardly to make the rods of the two fastening portions 58 The body 5822 abuts against the bottom corner 420 of the fan 40, thereby pushing the fan 40 to slide inwardly to cause the fan 4 The bottom corner 440 of 0 interferes with the abutting tab 642 of the second fixture 60. When the two fastening portions 58 are pivoted to the vertical orientation, the pressing portion 5820 presses down the bottom corner 420 of the fan 40, thereby fixing the lateral side of the fan 40 and extending it beyond the heat sink 10 and located at another Immediately above a heat sink 70; in this case, the bottom corner 440 of the fan 40 is sandwiched between the pressing piece 642 of the second fixing device 60 and the positioning piece 640, so that the other side of the fan 40 is fixed at the lateral side. Above the radiator 10 . Thereby, the installation process of the heat sink assembly is completed.

When the heat sink combination is used, since the lateral side of the fan 40 is located above the other heat sink 70, part of the generated airflow can be directly blown to the other heat sink 70 to dissipate heat to the other electronic component. In addition, since the other side of the fan 40 is located above the heat sink 10, another portion of the airflow generated by it will directly blow the heat sink 10 to dissipate heat from the electronic components. Thus, compared to the prior art, the airflow generated by the fan 40 of the heat sink assembly of the present invention can simultaneously dissipate heat from a plurality of electronic components, thereby significantly reducing the cost.

It can be understood that the other side of the fan 40 of the heat sink assembly of the present invention can be fixed to the heat sink 10 by other fixing structures, for example, screws (not shown) can be passed through the other side of the fan 40. The screw is locked on the top of the heat sink 10, and the screw can be regarded as the second fixing device.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧ radiator

12, 120, 122‧‧‧ fins

1200, 1220‧‧‧ screw holes

20‧‧‧Bucking module

22‧‧‧Fixed modules

24‧‧‧Fixed devices

30‧‧‧ boards

40‧‧‧Fan

42‧‧‧ side wall

420, 440‧‧‧ bottom corner

50‧‧‧First fixture

52, 62‧‧‧ fixed pieces

520‧‧‧Perforation

54‧‧‧ beams

56‧‧‧Combination Department

560‧‧‧ board

5600, 5664‧‧‧ hook

562, 564, 566‧‧‧ connectors

5660‧‧‧ lower

5662‧‧‧Upper

568‧‧‧Acceptor

58‧‧‧Withholding department

580‧‧‧Restriction Department

582‧‧‧Connecting Department

5820‧‧‧Resistance Department

5822‧‧‧ rod body

584‧‧‧First pivoting

586‧‧‧Operation Department

60‧‧‧Second fixture

620‧‧‧through hole

64‧‧‧arms

640‧‧‧ Positioning film

642‧‧‧Resistance tablets

70‧‧‧ Another radiator

80‧‧‧ screws

1 is a perspective view of a heat sink assembly in accordance with an embodiment of the present invention mounted on a circuit board, in which case another heat sink is located adjacent to the heat sink assembly.

2 is an exploded perspective view of the heat sink assembly of FIG. 1.

Figure 3 is an enlarged view of the first fixture of the heat sink assembly of Figure 2.

Figure 4 is an assembled view of Figure 2.

Figure 5 is a side view of Figure 4.

10‧‧‧ radiator

20‧‧‧Bucking module

30‧‧‧ boards

40‧‧‧Fan

50‧‧‧First fixture

60‧‧‧Second fixture

70‧‧‧ Another radiator

Claims (11)

A heat sink assembly comprising a heat sink, a first fixing device, a second fixing device and a fan, wherein the first fixing device is fixed on one side of the heat sink and pressed against one side of the fan And the side of the fan extends beyond the heat sink, the second fixing device is fixed to the other side of the heat sink opposite to the first fixing device and presses the other side of the fan, the first fixing device includes a fan The side support portion and the at least one fastening portion pivotally connected to the support portion, the at least one fastening portion being pivotable about the support portion to press against one side of the fan. The heat sink assembly of claim 1, wherein the support portion comprises a fixing piece fixed to one side of the heat sink, two beams extending outward from the fixing piece, and a beam joined to the ends of the two beam ends. combination. The heat sink assembly of claim 2, wherein the joint portion comprises a plate body connecting the ends of the two beams, a plurality of connecting bodies extending upward from the inner side of the plate body, and forming horizontally inward from the connecting bodies. The second receiving body has one side of the fan disposed on the two receiving bodies. The heat sink assembly of claim 3, wherein the connecting body has four, two of which are located between the two beams, and the other two are located at two sides of the two beams, and the two receiving bodies are respectively formed. On the other two connectors. The combination of the heat dissipating device of claim 4, wherein the outer side of the plate body is bent vertically inwardly to form a plurality of hooks, and the opposite sides of the two connecting bodies are bent horizontally in opposite directions. Another clasp. The heat sink assembly of claim 5, wherein the at least one fastening portion comprises a first pivoting portion and a second pivoting portion of the buckle hooked into the supporting portion a rotating portion, a connecting portion connecting the first pivoting portion and the second pivoting portion, and an operating portion formed at an end of the first pivoting portion, wherein the first pivoting portion and the second pivoting portion are engageable in the hooks Rotate. The heat sink assembly of claim 6, wherein the operating portion of the at least one fastening portion is pivotable about the first pivot portion into another hook that is snapped into the support portion to make the connection The part presses down on one side of the fan. The heat sink assembly according to any one of claims 1 to 7, wherein the second fixing device comprises a fixing piece and two arm portions extending horizontally inward from opposite ends of the fixing piece, the fixing piece being fixed to the fixing piece The other side of the heat sink places the two arms over the heat sink. The heat sink assembly of claim 8, wherein the end of each arm is divided along the center line into a horizontally extending positioning piece and an inclined upwardly extending pressing piece, the positioning piece and the pressing piece are commonly clamped. Place the other side of the fan. The heat sink assembly of claim 8, wherein the second fixture is a plurality of screws that are threaded into the heat sink through the other side of the fan. A heat sink assembly comprising a heat sink, a first fixing device, a second fixing device and a fan, wherein the first fixing device is fixed on one side of the heat sink and pressed against one side of the fan And the side of the fan extends beyond the heat sink, the second fixing device is fixed to the other side of the heat sink opposite to the first fixing device and presses the other side of the fan, the second fixing device includes a fixing piece and two An arm extending horizontally inward from both ends of the fixing piece, the fixing piece being fixed to the other side of the heat sink such that the two arm portions are placed above the heat sink.