TWI394519B - Heat dissipation device - Google Patents

Description

Heat sink

The invention relates to a heat dissipating device, in particular to a heat dissipating device with a fan fixing frame.

With the rapid development of the electronics industry, the computing speed of electronic components such as central processing units has been greatly improved, and the heat generated by them has also increased dramatically. How to dissipate the heat of electronic components to ensure their normal operation has been the industry. Pay attention to the issue. In order to effectively dissipate the heat generated by the central processing unit during operation, the industry usually installs a heat sink on the surface of the central processing unit, and installs at least one fan on the top of the heat sink, and the airflow generated by the fan blows toward the heat sink to promote heat loss. Thereby the temperature of the central processing unit itself is maintained within the normal operating range.

At present, the way in which the fan is stably mounted on the heat sink is to fix the fan directly on the heat sink or the fan mount by means of a lock screw. However, this fixing method needs to be used in the process of installing the fan. The tool is cumbersome to operate.

In view of this, it is necessary to provide a heat sink with a fan holder that is easy to install and disassemble.

A heat dissipating device includes a heat sink, a fan and a fan fixing bracket for fixing the fan to the top surface of the heat sink, the fixing frame includes two opposite first frames and two opposite second frames, the two sides of the heat sink The first frame is extended downwardly and has a first buckle that is buckled with the buckle groove. The first frame is extended upwardly and has two spaced apart second buckles respectively. The sides of the snap fan.

The fan or disassembly process of the above heat dissipating device does not require any tools. Simply place the fan holder or fan on the corresponding position of the radiator or the fan holder, and then press down to complete the installation. Or the second clip can be used to remove the fan holder or the fan. It can be seen that the installation and disassembly process of the fan holder and the fan are simple and convenient to operate.

As shown in FIG. 1 to FIG. 3, a heat dissipating device in a preferred embodiment of the present invention is configured to dissipate heat-dissipating electronic components (not shown) mounted on a circuit board (not shown), and the heat dissipating device includes a heat dissipating device. The fan 10 is fixed to one of the fan holders 20 on the top surface of the heat sink 10 and is fixed to the fan 30 at the top of the heat sink 10 by the fan holder 20.

The heat sink 10 includes a bottom plate 12, a plurality of heat dissipating fins 14 vertically arranged on the bottom plate 12, and two heat pipes 16 disposed in the bottom plate 12 and the heat dissipating fins 12. The bottom plate 12 has a substantially rectangular shape, and four corners extend horizontally to the left and right sides respectively with four fixing ears 120. The fixing ears 120 are provided with a fixing member 100 for fixing the heat sink 10 to the circuit board. The heat pipe 16 has a substantially U shape, and its two ends are respectively disposed in the bottom plate 12 and the heat dissipation fins 14. The heat dissipating fins 14 are arranged on the bottom plate 12 in parallel with each other, and are perpendicular to the left and right opposite sides of the bottom plate 12, and the top ends of the heat dissipating fins 14 are flush to form a top surface for the fan holder 20 and the fan 30 to be placed, and the heat dissipating fins A buckle groove 140 is defined in each of the left and right sides of the first and second sides. The buckle groove 140 extends along one side of the heat sink 10 and is parallel to the top surface of the heat dissipation fin 14. The depth of the buckle groove 140 decreases from the top to the bottom.

The fan 30 has a rectangular frame, and the frame is provided at each corner. The two are spaced apart from the lower flange 32.

The fan holder 20 can be integrally formed by a metal material such as stainless steel, which is a rigid metal frame. The frame body includes a rectangular frame body corresponding to the left and right sides of the heat sink 10 and the corresponding heat sink 10 . Two second borders 24 on the front and rear sides. A first buckle 222 extends downwardly from the middle portion of each of the first frames 22, and the first buckle 222 extends along the first frame 22 by a length of about one-half of the length of the first frame 22, and the first buckle The sheet 222 includes a first fastening portion 2220 and a first operating portion 2222. The first fastening portion 2220 is fastened to the buckle groove 140 on both sides of the heat sink 10, and extends vertically downward from the inner edge of the first frame 22, and then vertically inwardly bent to extend inwardly horizontally, and finally inclined outwardly. It extends downwards. The first operating portion 2222 is configured to operate the first fastening portion 2220 to be disengaged from the buckle 140 of the heat sink 10. The first fastening portion 2220 is bent vertically and extends horizontally outward, and then vertically bent downward. Extend it.

Each of the first bezels 22 has two second fastening pieces 224 extending vertically upwardly on opposite sides of the first fastening piece 222. The second fastening piece 224 fastens and fixes the lower flange 32 of the fan 30, and includes a second The fastening portion 2240 and a second operating portion 2242. The second fastening portion 2240 extends vertically upward from the inner edge of the first frame 22 to a height approximately equal to the thickness of the lower flange 32 of the fan 30, and is bent vertically inwardly to extend inwardly horizontally, and finally inclined outwardly. Extends upwards. The second operating portion 2242 is formed by extending the end of the second engaging portion 2240 vertically upward.

A first limiting piece 242 extends perpendicularly downward from the middle portion of the inner edge of the second frame 24, and the length of the first limiting piece 242 is about one half of the second frame 24. The second frame 24 hangs from its inner edge on both sides of the first limiting piece 242 Two second limiting pieces 244 are extended straightly upward. The first frame 22 and the second frame 24 respectively have a supporting piece (not labeled) protruding inwardly at the inner edge thereof, and the supporting pieces are respectively located at the first and second fastening pieces 222, 224 or the first and the second Between the two limiting pieces 242 and 244, the fan 30 placed on the fan holder 20 is supported.

When the fan 30 is installed, the fan holder 20 is first sleeved on the top surface of the heat sink 10, and the fan holder 20 is pressed down so that the first buckles 222 of the first frame 22 are slid from the left and right sides of the heat sink 10. The fan holder 20 is fixed to the left and right sides of the heat sink 10, and the first fixing piece 242 of the second fixing frame 24 of the fan holder 20 is respectively abutted on the front and rear sides of the heat sink 10. The fan holder 20 is fixed to the front and rear. Next, the fan 30 is placed on the fan holder 20, and the fan 30 is pressed down so that the left and right lower flanges 32 press the second cleats 224 on the first frame 22 to both sides and slide down to be stuck. The second fastening portion 2240 of the second fastening piece 224 is fixed under the second fastening portion 2, and the second limiting piece 244 of the second fixing frame 20 of the fan fixing frame 20 abuts against the front and rear sides of the lower flange 32 of the fan 30 to respectively extend the fan 30. Fixed before and after.

Therefore, the installation of the fan holder 20 and the fan 30 only needs to place the fan holder 20 or the fan 30 at the corresponding position of the radiator 10 or the fan holder 20, and then press down to complete the fan. The mounting process of the fixing frame 20 and the fan 30 is simple and convenient to operate.

When the fan 30 is removed, the first operating portion 2222 of the first fastening piece 222 of the first fixing piece 222 is pulled outwardly from the first fastening portion 2220 of the first fastening piece 222. When the middle is disengaged, the fan holder 20 connected to the fan 30 can be taken out. Or simply pulling the second operating portion 2242 of the end of the second fastening piece 224 of the fan holder 20 upwards When the fan 30 is lifted to release the lower flange 32 of the fan 30 from the second fastening portion 2240 of the second fastening piece 224, the fan 30 can be taken out. It can be seen that the fan fixing frame 20 and the fan 30 are easy to disassemble and easy to operate.

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‧‧‧floor

120‧‧‧ fixed ear

14‧‧‧Heat fins

140‧‧‧ buckle groove

16‧‧‧heat pipe

20‧‧‧Fan holder

22‧‧‧First border

222‧‧‧ first clasp

2220‧‧‧First fastening department

2222‧‧‧First Operation Department

224‧‧‧second clasp

2240‧‧‧Second Fasting Department

2242‧‧‧Second Operations Department

24‧‧‧second border

242‧‧‧First Limiter

244‧‧‧second limit film

30‧‧‧Fan

32‧‧‧Flange

100‧‧‧Fixed parts

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective assembled view of a preferred embodiment of a heat sink of the present invention.

Figure 2 is an exploded view of the heat sink of Figure 1.

Figure 3 is a front elevational view of the heat sink of Figure 1.

10‧‧‧ radiator

12‧‧‧floor

120‧‧‧ fixed ear

14‧‧‧Heat fins

140‧‧‧ buckle groove

16‧‧‧heat pipe

20‧‧‧Fan holder

22‧‧‧First border

222‧‧‧ first clasp

2220‧‧‧First fastening department

2222‧‧‧First Operation Department

224‧‧‧second clasp

2240‧‧‧Second Fasting Department

2242‧‧‧Second Operations Department

24‧‧‧second border

242‧‧‧First Limiter

244‧‧‧second limit film

30‧‧‧Fan

32‧‧‧Flange

100‧‧‧Fixed parts

Claims (8)

A heat dissipating device includes a heat sink, a fan and a fan fixing bracket for fixing the fan to the top surface of the heat sink, the fixing frame includes two opposite first frames and two opposite second frames, wherein the improvement is: A buckle is formed on the two sides of the heat sink, and the first frame is extended downwardly with a first buckle that is buckled with the buckle slot. The first frame is extended upwardly with two spaced apart second buckles respectively. The first fastening piece includes a first fastening portion that is buckled with the buckle groove and a first operation portion that is bent and extended from the first fastening portion, the first fastening portion is formed by the first frame inner edge Vertically extending downward, and then vertically inwardly bent to extend inwardly and horizontally, and finally inclined downwardly and outwardly extending downwardly, the first operating portion is configured to operate the first fastening portion to be detached from the radiator buckle groove, The first fastening portion is bent vertically and extends horizontally outward, and then vertically bent downward and extended. The heat dissipating device of claim 1, wherein the second frame extends downwardly with a first limiting piece stuck on opposite sides of the heat sink, and the second frame extends upwardly and has a card set in the fan. Two second limit pieces on opposite sides. The heat dissipation device of claim 2, wherein the first and second limiting pieces are perpendicular to the second frame, and the second limiting piece is located on both sides of the first limiting piece. The heat sink of claim 1, wherein the buckle depth is decreased from top to bottom, and the buckle groove is adjacent to and parallel to the top surface of the heat sink. The heat dissipating device of claim 1, wherein the first cleat is located at a middle position of the first frame and has a length equal to one half of the first frame. The heat sink according to any one of claims 1 to 4, wherein the wind Each of the corners of the fan is provided with two upper and lower flanges. The second buckle includes a second fastening portion of a lower flange of the buckle fan and a second operating portion that is bent upwardly from the second fastening portion. The heat dissipating device of claim 6, wherein the second fastening portion extends vertically upward from the inner edge of the first frame to a height approximately equal to the thickness of the lower flange of the fan, and is bent vertically inwardly. The inwardly extending horizontally extends, and finally the obliquely extends outwardly and outwardly. The second operating portion is formed by extending the end of the second engaging portion vertically upward. The heat dissipating device of claim 7, wherein the second cleat is located on both sides of the first cleat and respectively hooks the flanges at both ends of the two sides of the fan.