CN203136416U - heat sink - Google Patents

Abstract

The utility model relates to a heat dissipation device, which comprises a base and a heat pipe. The base comprises a clamping part, a bearing part and two side parts, wherein a first concave structure is formed on the outer side of each side part towards the inner side direction, the clamping part is opposite to the bearing part, the two side parts are connected with the clamping part and the bearing part, and an accommodating space is formed among the clamping part, the bearing part and the two side parts. A first end of the heat pipe is arranged in the accommodating space and is supported on the bearing part. The clamping part and the bearing part are matched to clamp the first end of the heat pipe in a tight fit mode.

Description

heat sink

technical field

The utility model relates to a heat dissipation device, in particular to a heat dissipation device in which a heat pipe is clamped in a base in a tight fitting manner by means of a stamping process.

Background technique

Heat sinks are closely related to the development of electronic products. When electronic products are in operation, the current in the circuit will generate unnecessary heat energy due to the influence of impedance. If the heat energy cannot be effectively removed and accumulated on the electronic components inside the electronic product, the electronic components may be due to continuous rise. temperature can cause damage. Therefore, the quality of the cooling device greatly affects the operation of electronic products.

Generally speaking, heat pipes are installed in many cooling devices to conduct heat energy generated by electronic components to a radiator, and then the radiator discharges the heat energy to the outside of the electronic product. At present, the base used to carry the heat pipe in the existing heat sink has to go through several processes, and it takes a lot of time to move the base between each process, which reduces the production efficiency and increases the production cost.

Contents of the invention

The utility model provides a heat dissipation device, which uses a stamping process to clamp a heat pipe in a base in a tight fit to solve the above problems.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A cooling device, characterized in that it comprises:

A base, including a clamping part, a bearing part and two side parts, a first concave structure is formed on the outside of each of the side parts towards the inside, the clamping part is opposite to the bearing part, and the two side parts connecting the clamping part and the bearing part, an accommodating space is formed between the clamping part, the bearing part and the two side parts; and

A heat pipe, a first end of the heat pipe is arranged in the accommodating space and carried on the bearing part, and the clamping part cooperates with the bearing part to clamp the first end of the heat pipe in a tightly fitting manner.

Wherein: the outer side of each side is S-shaped or Z-shaped.

Wherein: a second concave structure is formed from the inner side of each side portion toward the outer side.

Wherein: an opening is formed on the carrying portion, so that the bottom surface of the first end is exposed in the opening, and the width of the opening is smaller than the maximum width of the first end.

Wherein: the bottom surface of the first end is coplanar with the bottom surface of the base.

Wherein: a radiator is also included, which is arranged on a second end of the heat pipe.

Wherein: it also includes two fixing parts, which are arranged on the base, wherein the accommodating space is located between the two fixing parts.

Wherein: the heat pipe is a flat heat pipe.

To sum up, the base of the heat sink of the present invention can be formed by the aluminum extrusion process, and the present invention presses the clamping portion of the base by means of the stamping process, so that the heat pipe is tightly clamped in the base. Since the first concave structure is formed from the outer side to the inner side of the two side parts, the first concave structure can provide a space for deformation of the clamping part during the punching process. The utility model has simple manufacturing process, can effectively improve production efficiency and reduce production cost.

Description of drawings

1 is a flowchart of a method for manufacturing a heat sink according to an embodiment of the present invention;

FIG. 2 is a perspective view of the heat sink before assembly according to an embodiment of the present invention;

Fig. 3 is an assembled perspective view of the heat sink in Fig. 1;

Fig. 4 is a front view of the heat sink in Fig. 3;

Fig. 5 is a front view after stamping of the clamping part of the base of the heat sink in Fig. 4;

6 is a perspective view of a heat sink before assembly according to another embodiment of the present invention;

Fig. 7 is a front view of the heat sink in Fig. 6 after being assembled and the clamping part of the base is stamped;

8 is a perspective view of a heat sink before assembly according to another embodiment of the present invention;

Fig. 9 is a bottom perspective view of the assembled heat sink in Fig. 8;

Fig. 10 is a front view of the heat sink in Fig. 9;

Fig. 11 is a front view of the stamped clamping part of the base of the heat sink in Fig. 10;

12 is a perspective view of a heat sink before assembly according to another embodiment of the present invention;

FIG. 13 is a front view of the heat sink in FIG. 12 after being assembled and the clamping portion of the base is stamped.

Explanation of reference signs: 1, 1', 3, 3' heat sink; 10, 10', 30, 30' base; 12, 32 heat pipe; 14, 34 radiator; 16, 36 fixing piece; 100, 300 clamping 102,302 bearing portion; 104,304 side; 106,306 accommodation space; 108,308 riveting portion; 110,310,3200 bottom surface; 120,320 first end; 122,322 second end; 307 opening ; 1040, 3040 the first concave structure; 1042 the second concave structure; W1, W2 width; A arrow; S10-S16 steps.

Detailed ways

Please refer to FIG. 1 to FIG. 5 , FIG. 1 is a flowchart of a manufacturing method of a heat sink according to an embodiment of the present invention, FIG. 2 is a perspective view of a heat sink 1 according to an embodiment of the present invention before assembly, and FIG. 3 is FIG. 1 is an assembled perspective view of the heat sink 1 , FIG. 4 is a front view of the heat sink 1 in FIG. 3 , and FIG. 5 is a front view of the stamped clamping portion 100 of the base 10 of the heat sink 1 in FIG. 4 .

First, step S10 is performed to provide a base 10, wherein the base 10 includes a clamping portion 100, a bearing portion 102 and two side portions 104, the clamping portion 100 is arched, and the outer side of each side portion 104 faces the inner direction The first concave structure 1040 is formed so that the outer side of each side portion 104 is S-shaped or Z-shaped, and a second concave structure 1042 is formed on the inner side of each side portion 104 toward the outer direction, the clamping portion 100 is opposite to the bearing portion 102, The two side portions 104 are connected to the clamping portion 100 and the carrying portion 102 , and an accommodating space 106 is formed between the clamping portion 100 , the carrying portion 102 and the two side portions 104 . In this embodiment, the base 10 can be formed by an aluminum extrusion process to simplify the manufacturing process of the base 10 , thereby effectively improving production efficiency and reducing production cost.

Next, step S12 is executed, a first end 120 of a heat pipe 12 is arranged in the accommodating space 106 of the base 10 and carried on the supporting portion 102, and a heat sink 14 is arranged on a second end 122 of the heat pipe 12 superior. In this embodiment, the heat pipe 12 is a flat heat pipe. However, in another embodiment, the heat pipe 12 can also be a circular heat pipe or other heat pipes, depending on the actual application. In addition, the heat sink 14 can be formed by a combination of multiple heat dissipation fins, but not limited thereto.

Next, step S14 is executed, and the clamping part 100 is stamped from the clamping part 100 of the base 10 toward the bearing part 102 (the direction indicated by the arrow A in FIG. The portion 102 clamps the first end 120 of the heat pipe 12 in a tightly fitting manner, as shown in FIG. 5 . Since the outer side and the inner side of the two side parts 104 have the first concave structure 1040 and the second concave structure 1042 respectively, the first concave structure 1040 and the second concave structure 1042 can provide a space for the clamping part 100 to deform during the stamping process. . In other words, after the clamping part 100 is stamped, the clamping part 100 will extend to the two side parts 104, and then be in close contact with the first end 120 of the heat pipe 12, so that the clamping part 100 and the carrying part 102 cooperate in a tightly fitting manner The first end 120 of the heat pipe 12 is clamped. In this embodiment, the thickness of the clamping portion 100 may be between 0.6 mm and 1 mm (but not limited thereto), so that the clamping portion 100 has better ductility during stamping and does not cause damage due to stamping. And break.

Finally, step S16 is executed to arrange the two fixing pieces 16 on the base 10 , wherein the accommodating space 106 is located between the two fixing pieces 16 . In practical applications, the fixing member 16 can be a metal elastic piece, but not limited thereto. In this embodiment, the fixing member 16 can be riveted to the riveting portion 108 of the base 10 . In addition, if the riveting portion 108 is not formed on the base 10 , the fixing member 16 can be disposed on the base 10 by screwing, welding or other fixing methods.

Through the above step S10 to step S16, the manufacture of the heat sink 1 as shown in FIG. 5 can be completed. In practical applications, the bottom surface 110 of the base 10 can be attached to an electronic component (not shown), and then the fixing member 16 can be locked on a circuit board (not shown) in the electronic product to dissipate heat from the electronic component.

2 to 5, please refer to FIG. 6 and FIG. 7, FIG. 6 is a perspective view of the heat sink 1' according to another embodiment of the present invention before assembly, and FIG. 7 is the assembled heat sink 1' in FIG. A front view of the punched clamping portion 100 of the base 10 ′. The main difference between the heat sink 1 ′ and the above heat sink 1 is that the base 10 ′ of the heat sink 1 ′ includes two clamping parts 100 , two carrying parts 102 and four side parts 104 to form two accommodating spaces 106 , and the heat sink 1 ′ includes two heat pipes 12 , as shown in FIG. 6 and FIG. 7 . The first ends 120 of the two heat pipes 12 can be respectively arranged in the corresponding accommodating spaces 106 (the above-mentioned step S12), and then the two clamping parts 100 are stamped (the above-mentioned step S14), so that the two clamping parts 100 Cooperate with the two bearing parts 102 to clamp the first ends 120 of the two heat pipes 12 in a tightly fitting manner, as shown in FIG. 7 . In other words, the utility model can form a plurality of clamping parts 100, bearing parts 102 and side parts 104 on the base 10' by aluminum extrusion process according to actual application requirements, and then make a plurality of heat pipes 12 tightly fit by virtue of the stamping process. clamped between the corresponding clamping portion 100 and the bearing portion 102 . It should be noted that the elements with the same numbers in FIGS. 6 to 7 and those shown in FIGS. 2 to 5 have substantially the same working principles, and will not be repeated here.

Please refer to FIG. 8 to FIG. 11, FIG. 8 is a perspective view of the heat sink 3 according to another embodiment of the present invention before assembly, FIG. 9 is a bottom perspective view of the heat sink 3 in FIG. 8 after assembly, and FIG. 11 is a front view of the clamping portion 300 of the base 30 of the heat sink 3 in FIG. 10 after stamping. The manufacturing method in FIG. 1 can also be used to manufacture the heat sink 3 .

First, step S10 is performed to provide a base 30, wherein the base 30 includes a clamping portion 300, a bearing portion 302 and two side portions 304, the clamping portion 300 is arched, and the outer side of each side portion 304 faces the inner direction A first concave structure 3040 is formed, so that the outside of each side portion 304 is S-shaped or Z-shaped, the clamping portion 300 is opposite to the bearing portion 302, and the two side portions 304 are connected to the clamping portion 300 and the bearing portion 302. A space 306 is formed between the clamping portion 300 , the carrying portion 302 and the two side portions 304 , and an opening 307 is formed on the carrying portion 302 . In this embodiment, the base 30 can be formed by an aluminum extrusion process to simplify the manufacturing process of the base 30 , thereby effectively improving production efficiency and reducing production cost.

Next, step S12 is executed, a first end 320 of a heat pipe 32 is arranged in the accommodating space 306 of the base 30 and carried on the bearing portion 302, and a radiator 34 is arranged on a second end 322 of the heat pipe 32 superior. At this time, the bottom surface 3200 of the first end 320 of the heat pipe 32 is exposed in the opening 307 . In this embodiment, the width W1 of the opening 307 is smaller than the maximum width W2 of the first end 320 of the heat pipe 32 , so that the supporting portion 302 can support the first end 320 of the heat pipe 32 in the accommodating space 306 to prevent the heat pipe 32 from The first end 320 falls off from the opening 307 . In this embodiment, the heat pipe 32 is a flat heat pipe. However, in another embodiment, the heat pipe 32 can also be a circular heat pipe or other heat pipes, depending on the actual application. In addition, the heat sink 34 may be formed by a combination of multiple heat dissipation fins, but not limited thereto.

Next, step S14 is executed, and the clamping portion 300 is stamped from the clamping portion 300 of the base 30 toward the bearing portion 302 (the direction indicated by the arrow A in FIG. The portion 302 clamps the first end 320 of the heat pipe 32 in a tightly fitting manner, as shown in FIG. 11 . Since the outer sides of the two side portions 304 have the first concave structure 3040 , the first concave structure 3040 can provide a space for the clamping portion 300 to deform during the punching process. In other words, after the clamping part 300 is stamped, the clamping part 300 will extend to the two side parts 304, and then be in close contact with the first end 320 of the heat pipe 32, so that the clamping part 300 and the carrying part 302 cooperate in a tightly fitting manner The first end 320 of the heat pipe 32 is clamped. In this embodiment, the thickness of the clamping portion 300 may be between 0.6 mm and 1 mm (but not limited thereto), so that the clamping portion 300 has better ductility during stamping and does not cause damage due to stamping. And break.

Finally, step S16 is executed to place the two fixing pieces 36 on the base 30 , wherein the accommodating space 306 is located between the two fixing pieces 36 . In practical applications, the fixing member 36 can be a metal elastic piece, but not limited thereto. In this embodiment, the fixing member 36 can be riveted to the riveting portion 308 of the base 30 . In addition, if the riveting portion 308 is not formed on the base 30 , the fixing member 36 can be disposed on the base 30 by screwing, welding or other fixing methods.

Through the above step S10 to step S16, the manufacture of the heat sink 3 as shown in FIG. 11 can be completed. In practical applications, the exposed bottom surface 3200 of the first end 320 of the heat pipe 32 can be attached to an electronic component (not shown), and then the fixing member 36 is locked on a circuit board (not shown) in the electronic product, To dissipate heat from electronic components. As shown in Figure 11, after the heat sink 3 is manufactured, the bottom surface 3200 of the first end 320 of the heat pipe 32 can be coplanar with the bottom surface 310 of the base 30, so as to increase the heat dissipation area of the heat pipe 32 and the stability attached to the electronic components .

With reference to Figure 8 to Figure 11, please refer to Figure 12 and Figure 13, Figure 12 is a perspective view of the heat sink 3' according to another embodiment of the present invention before assembly, Figure 13 is the heat sink 3' in Figure 12 after assembly and A front view of the punched clamping portion 300 of the base 30 ′. The main difference between the heat sink 3' and the above heat sink 3 is that the base 30' of the heat sink 3' includes two clamping parts 300, two bearing parts 302 and four side parts 304 to form two accommodating spaces 306 , and the cooling device 3' includes two heat pipes 32, as shown in FIG. 12 and FIG. 13 . The first ends 320 of the two heat pipes 32 can be respectively disposed in the corresponding accommodating spaces 306 (step S12 mentioned above), and then the two clamping parts 300 are stamped (step S14 mentioned above), so that the two clamping parts 300 Cooperate with the two bearing parts 302 to clamp the first ends 320 of the two heat pipes 32 in a tightly fitting manner, as shown in FIG. 13 . In other words, the present invention can form a plurality of clamping parts 300 , bearing parts 302 and side parts 304 on the base 30 ′ through the aluminum extrusion process according to actual application requirements, and then use the stamping process to make the plurality of heat pipes 32 tightly fit clamped between the corresponding clamping part 300 and the carrying part 302 . It should be noted that the elements with the same numbers in Figures 12 to 13 as those shown in Figures 8 to 11 have roughly the same working principles, and will not be repeated here.

To sum up, the base of the heat sink of the present invention can be formed by the aluminum extrusion process, and the heat pipe of the present invention is clamped in the base in a tight fit manner by virtue of the stamping process. Since the first concave structure is formed from the outer side to the inner side of the two side parts, the first concave structure can provide a space for deformation of the clamping part during the stamping process. In addition, the present invention can form a second concave structure from the inner side to the outer side of the two side parts, so as to provide more deformation space for the clamping part during the stamping process. The utility model has simple manufacturing process, can effectively improve production efficiency and reduce production cost.

The above description is only illustrative, rather than restrictive, of the present utility model. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the protection scope of the present utility model.

Claims (8)

1. a heat abstractor is characterized in that, comprises:

One base, comprise a clamping part, a supporting part and two sidepieces, side direction forms one first sunk structure in the lateral of each this sidepiece, this clamping part is relative with this supporting part, these two sidepieces connect this clamping part and this supporting part, and an accommodation space is formed between this clamping part, this supporting part and this two sidepieces; And

One heat pipe, one first end of this heat pipe is arranged in this accommodation space and is carried on this supporting part, and this clamping part cooperates this first end that clamps this heat pipe in friction tight mode with this supporting part.

2. heat abstractor as claimed in claim 1, it is characterized in that: the outside of each this sidepiece is S-shaped or Z-shaped.

3. heat abstractor as claimed in claim 1, it is characterized in that: the inboard of each this sidepiece direction laterally forms one second sunk structure.

4. heat abstractor as claimed in claim 1, it is characterized in that: be formed with an opening on this supporting part, make the bottom surface of this first end expose in this opening, the width of this opening is less than the Breadth Maximum of this first end.

5. heat abstractor as claimed in claim 4 is characterized in that: the bottom surface copline of the bottom surface of this first end and this base.

6. heat abstractor as claimed in claim 1 is characterized in that: also comprise a radiator, be arranged on one second end of this heat pipe.

7. heat abstractor as claimed in claim 1, it is characterized in that: also comprise two fixtures, be arranged on this base, wherein this accommodation space is between these two fixtures.

8. heat abstractor as claimed in claim 1, it is characterized in that: this heat pipe is a flat hot pipe.

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