TWI479116B - Heat dissipation apparatus - Google Patents

Description

Heat sink

The invention relates to a heat dissipating device, in particular to a heat dissipating device for dissipating heat from a computer central processing unit.

Generally, the heat dissipation problem of a central processing unit (CPU) is solved by installing a heat sink made of a heat conductive material above it. In order to enhance air convection, a fan is usually installed on the heat sink with screws to better dissipate heat for the CPU. However, the way in which the fan is fixed by the screw is realized by an auxiliary tool such as a screwdriver when the fan is attached and detached, and the operation is extremely inconvenient, thereby causing cumbersome assembly.

In view of the above, it is necessary to provide a heat sink that is easy to assemble.

A heat dissipating device includes a heat sink, a fan and a fixing bracket. One side of the fan defines a plurality of fixing holes, and the fixing bracket comprises a substrate and two elastically deformable extending from the opposite edges of the substrate. a mounting space for accommodating the fan is formed between the substrate and the two side plates. The substrate defines an air flow opening for allowing air to flow between the heat sink and the fan. The substrate of the fixing bracket is fixed by a plurality of The head is fixed to the heat sink, and the heads of the fixing members protrude from the substrate and are respectively received in the corresponding fixing holes of the fan. Each side plate protrudes from the end of the substrate toward the mounting space. Elastically holding the buckle on the opposite side of the fan The holding portion, the outer surface of each side plate extends from the position near the substrate to the extending direction of the substrate to form a plurality of first reinforcing ribs.

The invention elastically deforms the two side plates of the fixing bracket to allow the fan to be accommodated in the installation space of the fixing bracket, and the two side plates are restored to deform and the buckle portion elastically holds the other side of the fan. The edges of the fixing members are respectively received in the corresponding fixing holes of the fan, that is, the fan is fixed in the installation space of the fixing bracket, which makes assembly very convenient.

10‧‧‧ radiator

12‧‧‧Support board

14‧‧‧ vents

16‧‧‧Lock hole

20‧‧‧Fixed bracket

22‧‧‧Substrate

222‧‧‧ airflow port

224‧‧‧through hole

24‧‧‧ side panels

242‧‧‧Detention Department

244‧‧‧First reinforcement rib

246‧‧‧second reinforcement rib

26‧‧‧Installation space

40‧‧‧Fan

42‧‧‧Fixed holes

100‧‧‧ screws

1 is an exploded perspective view of a preferred embodiment of a heat sink of the present invention.

Figure 2 is a partial perspective assembled view of Figure 1.

3 is a perspective assembled view of FIG. 1.

Referring to FIG. 1 , a preferred embodiment of the heat sink of the present invention includes a heat sink 10 , a mounting bracket 20 , and a fan 40 that can be used to dissipate heat for the CPU. The heat sink 10 is provided with a substantially square support plate 12 at the top. The support plate 12 defines a venting opening 14 in the middle portion, and a locking hole 16 is defined in each of the four end corners. The locking holes 16 are opened adjacent to the edge of the vent 14.

The fixing bracket 20 includes a substrate 22 and two side plates 24 respectively extending upward from opposite sides of the substrate 22. A mounting space 26 for accommodating the fan 40 is formed between the substrate 22 and the two side plates 24. The substrate 22 defines a pair of airflow ports 222 at the central portion of the vents 14 of the support plate 12, and a pair of through holes 224 for the locking holes 16 of the support plates 12 are respectively formed at the four corners. The top inner side of each side panel 24 extends perpendicularly to the direction of the opposite side panel 24 (ie, the direction toward the mounting space 26) A long strip-shaped catching portion 242 is formed. The outer surface of each of the side plates 24 extends from the position near the substrate 22 toward the extending direction of the substrate 22 to form a plurality of first reinforcing ribs 244 to increase the strength of the corresponding side plates 24. A plurality of second reinforcing ribs 246 are formed at the joint of the upper surface of each of the latching portions 242 and the corresponding side plates 24 to increase the connection strength of the corresponding latching portions 242 and the corresponding side plates 24.

The fan 40 has a pair of fixing holes 42 for fixing the corresponding through holes 224 of the bracket 20 at four corners of one side thereof.

Referring to FIG. 2 and FIG. 3 , during assembly, a plurality of fixing members (screws 100 in the figure) are respectively passed through the through holes 224 of the base plate 22 of the fixing bracket 20 and locked to the corresponding locking of the supporting plate 12 . In the hole 16, the fixing bracket 20 is fixed to the heat sink 10. At this time, the air flow port 222 of the fixing bracket 20 is opposite to the air vent 14 of the support plate 12.

When the fan 40 is to be mounted, the side plate 24 of the fixing bracket 20 is externally pulled to be elastically deformed, and the fan 40 is placed in the installation space 26 of the fixing bracket 20, and the heads of the fixing members are allowed. They are respectively received in the corresponding fixing holes 42 of the fan 40. The side plate 24 of the fixing bracket 20 is released, so that the side plate 24 of the fixing bracket 20 is deformed to abut against the corresponding side of the fan 40, and the latching portions 242 of the two side plates 24 are respectively elastically clamped on the fan 40. The other side edge opposite to the side on which the fixing holes 42 are opened, that is, the fan 40 is conveniently fixed. When the fan 40 is in operation, the hot air on the heat sink 10 is drawn away by the fan 40 via the vent 14 of the support plate 12 and the air flow port 222 of the fixed bracket 20, or the fan 40 will be inhaled. The cold air is blown toward the heat sink 10 via the air flow port 222 of the fixed bracket 20 and the air vent 14 of the support plate 12.

When the fan 40 is to be removed, the side plate 24 of the fixing bracket 20 is pulled outward again, so that the The latching portions 242 of the side plates 24 are respectively separated from the top edge of the fan 40, so that the fan 40 can be easily taken out from the mounting space 26 of the fixing bracket 20.

In other embodiments, the two side plates 24 of the fixing bracket 20 may respectively extend upward from the two adjacent sides of the substrate 22, or may extend upward from the three sides of the substrate 22 to form three side plates 24. .

As can be seen from the above, the heat dissipating device allows the fan 40 to be accommodated in the mounting space 26 of the fixing bracket 20 by elastically deforming the two side plates 24 of the fixing bracket 20, and the two side plates 24 are restored and deformed. The latching portion 242 is elastically engaged with the other side edge of the fan 40, and the heads of the fixing members are respectively received in the corresponding fixing holes 42 of the fan 40, that is, the fan 40 is fixed to the installation space. Within 26, the assembly is very convenient.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

10‧‧‧ radiator

12‧‧‧Support board

14‧‧‧ vents

16‧‧‧Lock hole

20‧‧‧Fixed bracket

22‧‧‧Substrate

222‧‧‧ airflow port

224‧‧‧through hole

24‧‧‧ side panels

242‧‧‧Detention Department

244‧‧‧First reinforcement rib

246‧‧‧second reinforcement rib

26‧‧‧Installation space

40‧‧‧Fan

42‧‧‧Fixed holes

100‧‧‧ screws

Claims (5)

A heat dissipating device includes a heat sink and a fan. The fan has a plurality of fixing holes on one side of the fan. The heat sink further includes a fixing bracket. The fixing bracket includes a substrate and two edges respectively from the edge of the substrate. An elastically deformable side plate formed in the same direction, a mounting space for accommodating the fan is formed between the substrate and the two side plates, and the substrate defines an air flow port for allowing air to flow between the heat sink and the fan. The base of the fixing bracket is fixed to the heat sink by a plurality of fixing members, and the heads of the fixing members protrude from the substrate and are respectively received in the corresponding fixing holes of the fan, and each side plate is at an end away from the substrate. A latching portion for elastically holding the opposite side of the fan is protruded from the direction of the mounting space, and an outer surface of each of the side plates extends from a position close to the substrate toward a extending direction of the substrate to form a plurality of first reinforcing ribs. The heat dissipating device of claim 1, wherein the substrate is provided with a plurality of through holes at a position close to an edge of the air flow opening, and the fixing members respectively pass through the through holes of the substrate and are locked to the heat sink. The substrate is fixed to the heat sink. The heat sink of claim 2, wherein the heat sink is provided with a support plate, the support plate defines a venting opening for the airflow opening of the substrate, the support plate is adjacent to the edge of the vent Positioning a plurality of locking holes for the through holes of the substrate, and the fixing members are respectively fixed to the corresponding locking holes of the supporting plate through the through holes of the substrate to fix the substrate to the heat sink. Support plate. The heat dissipating device of claim 1, wherein the fastening portion of each of the side plates is formed along an extending direction of the one end away from the substrate. The heat dissipating device of claim 1, wherein a plurality of second reinforcing ribs are formed at a joint of an outer surface of each of the fastening portions and the corresponding side plate.