TWI481341B - Thin heat sink and method of manufacturing the same - Google Patents

Description

Thin heat sink and manufacturing method thereof

The invention relates to a heat dissipation structure, in particular to a thin heat sink and a manufacturing method thereof.

With the advancement of technology, the functions of electronic products are more diversified, and electronic components such as internal chips are more likely to generate heat when operating. When the heat is accumulated too much, the electronic components are burnt due to high heat, making the electronic products impossible. Operation; therefore, a heat sink is mounted on the heat-generating electronic component, so that the heat generated by the electronic component is transmitted to the heat sink, and the heat is gradually taken away from the electronic component via the heat sink to improve the service life of the electronic component.

For the conventional heat sink, please refer to the first to second figures, which includes a heat pipe 10, a fixing base 20 and two locking springs 30. The fixing base 20 is provided with a groove 201, and the heat pipe 10 is accommodated in the groove. 201, and each locking spring 30 is respectively coupled to the two sides of the fixing base 20, and finally passes through the locking spring 30 through the screw 40 to lock the heat sink on the circuit board; thereby, the heat pipe 10 is made The heat is attached to the electronic component, and the heat generated by the electronic component is transmitted to the heat pipe 10, and the heat is conducted through the heat pipe 10 to achieve the heat dissipation effect.

However, the structural design of the above heat sink is such that the position of the heat pipe 10 cannot be located, resulting in heat. The tube 10 is soldered in a solder paste manner to the inner wall of the recess 201. However, in recent years, electronic products such as notebook computers have been required to be thinner in size, and the heat pipe 10 and the mount 20 are welded in a welded manner. There is a certain thickness increase, so that the thickness of the whole heat sink is also increased, so that the heat sink can not cooperate with the development of thinning; in addition, the heat accumulates at the welded place, which causes the heat dissipation efficiency of the heat sink to decrease, and the processing steps of the welding are complicated, which also causes The manufacturing cost of the radiator is increased.

In view of the above, the inventors of the present invention have made great efforts to solve the above problems by focusing on the above-mentioned prior art, and have made great efforts to solve the above problems, which has become the object of development by the present inventors.

An object of the present invention is to provide a thin heat sink and a manufacturing method thereof, which are embedded in a heat pipe body by using each upper claw portion or each lower claw portion, so that the heat pipe is positioned on the fixing member, so that the thin heat sink can maintain a good thin shape. The design and the non-welding method in the processing make the thin heat sink easy to manufacture and reduce the cost.

In order to achieve the above object, the present invention provides a thin heat sink comprising: a fixing component comprising two elastic pieces, the two elastic pieces are formed with two parallel straight sections, and an accommodation space is formed between the two vertical sections, the fixing The component is formed with at least one upper claw portion and at least a lower claw portion with respect to the accommodating space; and a heat pipe, one end of which is disposed in the accommodating space and sandwiched between the upper claw portion and the lower claw portion, the upper portion One of the claw portion or the lower claw portion is embedded in the heat pipe body.

In order to achieve the above object, the present invention provides a thin heat sink comprising: a fixing member, an accommodating space and at least one upper claw portion and at least a lower claw portion formed with respect to the accommodating space; and a heat pipe at one end Wearing in the accommodating space and being clipped Positioned between the upper claw portion and the lower claw portion, the upper claw portion or the lower claw portion is embedded in the heat pipe body, the heat pipe has an opposite first plane and a second plane, the first plane and the upper portion The claw portion forms a flat surface, and the second plane and the lower claw portion form a flat surface.

In order to achieve the above object, the present invention provides a method for fabricating a thin heat sink, the steps of which include: a) providing a fixing member, the fixing member having an accommodating space and forming at least one upper claw portion and at least a lower claw portion And b) providing a heat pipe having a first plane and a second plane opposite to each other, the one end of the heat pipe is disposed in the accommodating space, and the upper claw portion and the lower claw portion are jointly wrapped on the heat pipe And c) providing a presser for pressing the upper claw or the lower claw into the heat pipe body, the first plane and the upper claw forming a flat surface, the second plane And the lower claw portion forms a flat surface.

The invention also has the following effects: each upper claw portion and each lower claw portion are embedded in the heat pipe body, so that the heat pipe is positioned on the fixing component, so that the overall combination is processed without welding, so that the thin heat sink has convenient manufacture and reduction. At the same time, when the electronic product requires a thinner volume, the upper claw portion and each lower claw portion are embedded in the heat pipe body, so that the thickness of the thin heat sink is equal to the thickness of the heat pipe, so that the thin heat sink is well thinned. design. In addition, the present invention can adjust the width of the accommodating space via the position of the two elastic pieces, and then fit the heat pipes of different widths to improve the combination suitability of the thin heat sink. Moreover, compared with the prior art, the invention has no welding method, so there is no heat accumulated in the welding place, so as to reduce the heat dissipation efficiency of the radiator; Thus, achieving the thin heat sink of the present invention can maintain excellent heat dissipation efficiency. Furthermore, the upper claw portion and the lower claw portion are staggered, so that the embedded portions formed on the heat pipe are also staggered with each other, and the thickness of the heat pipe is prevented from being too thin, thereby affecting the deformation of the capillary structure inside the heat pipe, thereby making the present invention The heat pipe has good thermal conductivity.

<知知〉

10‧‧‧heat pipe

20‧‧‧ Fixed seat

201‧‧‧ Groove

30‧‧‧Locking reeds

40‧‧‧ screws

<this invention>

1‧‧‧Fixed components

11‧‧‧Shrap

111‧‧‧Upright section

12‧‧‧ accommodating space

13‧‧‧Upper claw

14‧‧‧ Lower jaw

15‧‧‧ Fixing frame

151‧‧‧Fixed holes

2‧‧‧heat pipe

21‧‧‧ first plane

22‧‧‧ second plane

23‧‧‧ embedded department

3‧‧‧heat fins

100‧‧‧Brazil

200‧‧‧heating components

The first figure is a schematic diagram of a combination of conventional heat sinks.

The second figure is a schematic exploded view of a conventional heat sink.

The third figure is a schematic diagram of the combination of the thin heat sink of the present invention.

The fourth figure is a flow chart of the steps of the method for manufacturing the thin heat sink of the present invention.

The fifth figure is a schematic view of the heat pipe of the present invention to be placed in the accommodating space.

The sixth figure is a schematic view of the heat pipe of the present invention which has been placed in the accommodating space.

The seventh drawing is a side cross-sectional view of the present invention in which the upper claw portions are coated on the surface of the heat pipe.

The eighth drawing is a side cross-sectional view of the present invention in which the respective lower claw portions are coated on the surface of the heat pipe.

Figure 9 is a side cross-sectional view showing the upper jaw portion of the presser of the present invention embedded in the heat pipe body.

Figure 11 is a side cross-sectional view showing the lower jaw portion of the presser of the present invention embedded in the heat pipe body.

The eleventh figure is a schematic view showing the first plane and the upper claw portions of the present invention forming a flat surface.

Figure 12 is a schematic view showing the second plane and the lower jaw portions of the present invention forming a flat surface.

The thirteenth drawing is a schematic view showing the state of use of the thin heat sink of the present invention.

Figure 14 is a schematic view showing the combination of another embodiment of the thin heat sink of the present invention.

The detailed description and technical content of the present invention will be described with reference to the accompanying drawings.

Referring to the third figure, the present invention provides a thin heat sink and a manufacturing method thereof. The thin heat sink mainly comprises a fixing component 1 and a heat pipe 2.

The fixing member 1 is formed with two parallel straight legs 111. An accommodating space 12 is formed between the two straight legs 111, and the upper accommodating portion 12 is formed with one or a plurality of upper claw portions 13 and may be one or plural. The lower claw portion 14 is described in detail below. The fixing member 1 can also be divided into two elastic pieces 11 which are separated from each other as shown in the fifth figure. The two elastic pieces 11 are respectively formed with two parallel straight segments 111 and upper claw portions 13 respectively. And the lower claw portion 14 is interlaced with each other, and the upper claw portion 13 is bent and the upper claw portion 13 is formed at intervals, and the lower claw portion 14 is formed with the lower claw portion 14; in addition, the fixing member 1 is away from the erecting portion 111 toward the accommodating space. The direction of 12 extends one or more fixing frames 15, and each fixing frame 15 is provided with a fixing hole 151.

One end of the heat pipe 2 is disposed in the accommodating space 12 and sandwiched between the upper claw portion 13 and the lower claw portion 14. One or all of the upper claw portions 13 are embedded in the body of the heat pipe 2 or the lower claw portion 14 thereof. One or all of the heat pipe 2 is embedded in the body of the heat pipe 2, and one of the surfaces of the heat pipe 2 and the upper claw portion 13 or the lower claw portion 14 may be formed into a flat surface. As described in detail below, the heat pipe 2 is the upper claw portion 13 and the lower claw portion 14 The deformation is performed to form a plurality of embedded portions 23, and the heat pipe 2 has a first plane 21 and a second plane 22 opposite to each other. The first plane 21 and the upper claw portion 13 form a flat surface, and the second plane 22 and the lower claw portion 14 are formed. A flat surface is formed; in addition, the other end of the heat pipe 2 is connected with a plurality of heat dissipation fins 3.

The combination of the thin heat sink of the present invention is provided with the accommodating space 12 by the fixing member 1 and is formed with the upper claw portion 13 and the lower claw portion 14 which are mutually staggered with respect to the accommodating space 12; 2 is disposed at one end of the accommodating space 12 and sandwiched between the upper claw portion 13 and the lower claw portion 14 , and the upper claw portion 13 or the lower claw portion 14 is embedded in the body of the heat pipe 2 such that the upper claw portion 13 and the lower claw portion 14 are Forming a flat surface with the surface of the heat pipe 2, as described in detail below, the heat pipe 2 is embedded and deformed by the upper claw portion 13 and the lower claw portion 14 to form a plurality of embedded portions 23, and the heat pipe 2 has opposite first planes 21 and second planes 22, The one surface 21 and the upper claw portion 13 form a flat surface, and the second flat surface 22 and the lower claw portion 14 form a flat surface.

Thereby, the upper claw portions 13 and the lower claw portions 14 are embedded in the heat pipe 2 body, so that the heat pipe 2 is positioned on the fixing member 1 so that the overall combination is processed without welding, so that the thin heat sink is convenient to manufacture and At the same time, when the electronic product requires a thinner volume, the upper claw portion 13 and each lower claw portion 14 are embedded in the heat pipe 2 body, so that the thickness of the thin heat sink is equal to the thickness of the heat pipe, so that the thin heat sink reaches Good thin design.

In addition, the fixing element 1 is divided into two elastic pieces 11 which are separated from each other, and the two elastic pieces 11 are respectively formed with two parallel straight sections 111, and the accommodating space 12 is formed between the two straight standing sections 111. Therefore, the present invention can be passed through the two elastic pieces 11 The width of the accommodating space 12 is adjusted to fit the heat pipes 2 of different widths to improve the combination suitability of the thin heat sink. Please refer to the fourth to twelfth drawings, which are the steps of the manufacturing method of the above probe unit structure.

As shown in step S1 and FIG. 5 of the fourth figure, firstly, a fixing member 1 is provided. The fixing member 1 is provided with an accommodating space 12 and a plurality of upper claw portions 13 and a plurality of lower claw portions 14 are formed. 1 is formed with parallel two straight segments 111, and an accommodating space 12 is formed between the two straight segments 111. The upper claw portion 13 and the lower claw portion 14 are mutually staggered corresponding to the accommodating spaces 12, and each of the straight segments 111 is intermittently bent. The upper claw portion 13 is formed and the lower claw portion 14 is formed with respect to the upper claw portion 13.

As shown in the step S2 and the sixth to eighth embodiments of the fourth embodiment, a heat pipe 2 is provided, and one end of the heat pipe 2 is disposed in the accommodating space 12, so that the upper claw portion 13 and the lower claw portion 14 are coated together. The surface of the heat pipe 2; wherein the heat pipe 2 has a thickness of 3 mm or less.

As shown in step S3 and ninth to twelfth drawings of the fourth figure, finally, a presser 100 is provided, and the upper jaw portion 13 or the lower claw portion 14 is pressed into the heat pipe 2 by the pressing device 100, that is, the probe is completed. The unit structure is described in detail below. As shown in the ninth to tenth drawings, the heat pipe 2 is embedded and deformed by the upper claw portion 13 or the lower claw portion 14 to form a plurality of embedded portions 23, and each of the upper claw portions 13 or each of the lower claw portions 14 and each The fitting portions 23 are fitted to each other; as shown in the eleventh to twelfth drawings, one of the surfaces of the heat pipe 2 and the upper claw portion 13 or the lower claw portion 14 form a flat surface, as described in detail below, the heat pipes 2 have opposite A first plane 21 and a second plane 22, the first plane 21 and the upper claw portion 13 form a flat surface, and the second plane 22 and the lower claw portion 14 form a flat surface.

Therefore, the thin heat sink of the present invention and the method of fabricating the same can be obtained by the above-described structural composition.

Thereby, the upper claw portions 13 and the lower claw portions 14 are embedded in the heat pipe 2 body, so that the heat pipe 2 is positioned on the fixing member 1, and the upper claw portion 13 and the lower claw portion 14 are staggered, resulting in the formation of the heat pipe 2 The embedded portions 23 are also arranged in a staggered manner to each other, and the thickness of the heat pipe 2 is prevented from being too thin, thereby affecting the deformation of the capillary structure inside the heat pipe 2, so that the heat pipe 2 of the present invention has good heat conduction performance.

Please refer to the thirteenth figure, which is a use state of the thin heat sink of the present invention, and refers to the third figure, wherein the second plane 22 and the lower claw portion 14 form a flat surface, and the flat surface is thermally attached to the heat generating component 200. In turn, the heat generated by the heating element 200 is transmitted to the heat pipe 2, and then the heat is transmitted to the heat dissipation fins 3 via the heat pipe 2 to be diverged, thereby achieving heat dissipation. efficacy. At the same time, compared with the prior art, the invention has no welding method, so there is no heat accumulated in the welding place, so as to reduce the heat dissipation efficiency of the heat sink; thereby, the thin heat sink of the invention can maintain excellent heat dissipation efficiency.

Referring to FIG. 14 , another embodiment of the thin heat sink of the present invention, wherein the fixing component 1 can also be integrally formed with parallel two straight segments 111 , that is, the fixing component 1 includes two elastic pieces 11 connected to each other. The elastic piece 11 is formed with two parallel straight sections 111, and an accommodation space 12 is formed between the two vertical sections 111; thereby, the two elastic pieces 11 have mutually connected portions to increase the bonding strength between the fixing element 1 and the heat pipe 2. .

In summary, the thin heat sink of the present invention and the manufacturing method thereof have not been seen in the same kind of products and are used publicly, and have industrial utilization, novelty and progress, fully comply with the requirements of the invention patent application, and apply according to the patent law. Please carefully check and grant the patent in this case to protect the rights of the inventor.

1‧‧‧Fixed components

11‧‧‧Shrap

111‧‧‧Upright section

12‧‧‧ accommodating space

14‧‧‧ Lower jaw

15‧‧‧ Fixing frame

151‧‧‧Fixed holes

2‧‧‧heat pipe

22‧‧‧ second plane

23‧‧‧ embedded department

3‧‧‧heat fins

Claims (12)

A thin heat sink comprising: a fixing component comprising two elastic pieces, wherein the two elastic pieces are formed with two parallel straight sections, and an accommodating space is formed between the two straight standing sections, and the fixing component forms at least one with respect to the accommodating space. An upper claw portion and at least a lower claw portion; and a heat pipe, one end of which is disposed in the accommodating space and sandwiched between the upper claw portion and the lower claw portion, the upper claw portion or the lower claw portion being embedded therein The heat pipe body. The thin heat sink according to claim 1, wherein the heat pipe is embedded and deformed by the upper claw portion and the lower claw portion to form a plurality of embedded portions. The thin heat sink of claim 1, wherein the two elastic pieces are connected to each other. The thin heat sink of claim 1, wherein the two elastic pieces are separated from each other. The thin heat sink according to claim 1, wherein the fixing member is formed with two parallel straight portions, and the accommodating space is formed between the two straight legs, and the upper claw portion and the lower claw portion are interdigitated with each other. The upper leg portion is bent and has the upper claw portion and the lower claw portion is formed with respect to the upper claw portion. The thin heat sink of claim 1, wherein the fixing element is formed with two parallel straight sections, and the accommodating space is formed between the two straight legs, and the fixing component is away from the accommodating space from the erecting section. The direction extends at least one fixing frame, and each of the fixing frames is provided with a fixing hole. The thin heat sink of claim 1, wherein the other end of the heat pipe is connected to a plurality of heat dissipation fins. A thin heat sink comprising: a fixing member is provided with an accommodating space and at least one upper claw portion and at least a lower claw portion are formed with respect to the accommodating space; and a heat pipe is disposed at one end of the accommodating space and is sandwiched between the upper claw portion and Between the lower claw portions, the upper claw portion or the lower claw portion is embedded in the heat pipe body, the heat pipe has a first plane and a second plane opposite to each other, and the first plane and the upper claw portion form a flat surface. The second plane and the lower jaw form a flat surface. A manufacturing method of a thin heat sink, comprising the steps of: a) providing a fixing component, the fixing component is provided with an accommodating space and forming at least one upper claw portion and at least a lower claw portion; b) providing a heat pipe, the heat pipe having a first plane and a second plane opposite to each other, the one end of the heat pipe is disposed in the accommodating space, the upper claw portion and the lower claw portion are jointly coated on the surface of the heat pipe; and c) a presser is provided The upper jaw portion or the lower claw portion is embedded in the heat pipe body by the presser, and the first plane and the upper claw portion form a flat surface, and the second plane and the lower claw portion form a flat surface. The manufacturing method of the thin heat sink of claim 9, wherein in the step a, the fixing element is formed with two parallel straight sections, and the accommodating space is formed between the two straight sections. The method of manufacturing the thin heat sink according to claim 10, wherein the upper claw portion and the lower claw portion are mutually staggered with each other, and each of the upright portions is bent and has the upper claw portion and is opposite to the upper portion The lower claw portion is formed with the lower claw portion. The manufacturing method of the thin heat sink of claim 11, wherein in the step c, the heat pipe is embedded and deformed by the upper claw portion or the lower claw portion to form a plurality of embedded portions, and one surface of the heat pipe and the upper claw are The portion or the lower jaw portion forms a flat surface.