TIGHT-FIT RIVETING STRUCTURE FOR HEAT DISSIPATION ALUMINUM BASE AND HEAT PIPE

Abstract

A tight-fit riveting structure for a heat dissipation aluminum base and a heat pipe includes a heat dissipation aluminum base, a heat pipe, and a holder. When the heat dissipation aluminum base is to be manufactured, an upper surface of a thin aluminum plate is pressed downward to form an arched portion. The arched portion protrudes below the thin aluminum plate. A cavity is defined in the arched portion. The cavity has an upper end opening. The cavity has an inner width corresponding to an outer width of the heat pipe. The cavity has a depth greater than a thickness of the heat pipe.

Claims

1. A tight-fit riveting structure for a heat dissipation aluminum base and a heat pipe, comprising a heat dissipation aluminum base, a heat pipe and a holder, the heat pipe being riveted and clamped on the heat dissipation aluminum base, the holder being mounted to an underside of the heat dissipation aluminum base; wherein when the heat dissipation aluminum base is to be manufactured, an upper surface of a thin aluminum plate is pressed downward to form an arched portion, the arched portion protrudes below the thin aluminum plate, a cavity is defined in the arched portion, the cavity has an upper end opening, the cavity has an inner width corresponding to an outer width of the heat pipe, the cavity has a depth greater than a thickness of the heat pipe, a bottom of the arched portion is shaped upward to form two raised portions respectively located on both sides of the upper end opening, the raised portions protrude upward from the upper surface of the thin aluminum plate, the raised portions each have a thickness less than that of the thin aluminum plate, the depth of the cavity after being shaped upward is equal to the thickness of the heat pipe; wherein the heat pipe is placed into the cavity from the upper end opening of the cavity, and then the raised portions on both sides of the upper end opening are pressed and deformed toward the heat pipe to be flush with the upper surface of the thin aluminum plate, so that outer surface of a bottom and two sides of the heat pipe are tightly attached to the heat dissipation aluminum base, and tops of the two sides of the heat pipe are riveted and fixed.

2. The tight-fit riveting structure as claimed in claim 1, wherein the heat pipe is flat and thin, and the thickness of the heat pipe is less than a width between its left and right end faces.

3. The tight-fit riveting structure as claimed in claim 2, wherein upper and lower end faces of the heat pipe are flat faces, and the left and right end faces of the heat pipe are curved faces.

4. The tight-fit riveting structure as claimed in claim 1, wherein left and right sides of the heat dissipation aluminum base, corresponding to a bottom of the cavity, have respective holder mounting portions, and the holder includes two holders to be respectively mounted to undersides of the holder mounting portions of the left and right sides of the heat dissipation aluminum base.

5. The tight-fit riveting structure as claimed in claim 1, wherein the heat pipe includes one heat pipe.

6. The tight-fit riveting structure as claimed in claim 1, wherein the heat pipe includes at least two heat pipes, and the heat pipes are arranged side by side in the cavity.

7. The tight-fit riveting structure as claimed in claim 6, wherein when the bottom of the arched portion is shaped upward, a second protrusion is formed, the second protrusion extends upward from an inner bottom surface of the cavity, the second protrusion is gradually reduced upward, the bottom of the arched portion is formed with a recess aligned with a bottom of the second protrusion; and the second protrusion is located between the adjacent heat pipes to separate the adjacent heat pipes.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG. 1 is a perspective view of a first embodiment of the present invention;

[0011] FIG. 2 is an exploded view of the first embodiment of the present invention;

[0012] FIG. 3 is a schematic view showing the manufacturing process of the first embodiment of the present invention;

[0013] FIG. 4 is a perspective view of a second embodiment of the present invention;

[0014] FIG. 5 is an exploded view of the second embodiment of the present invention;

[0015] FIG. 6 is a perspective view of a third embodiment of the present invention;

[0016] FIG. 7 is an exploded view of the third embodiment of the present invention;

[0017] FIG. 8 is a schematic view showing the manufacturing process of the third embodiment of the present invention;

[0018] FIG. 9 is a perspective view of a fourth embodiment of the present invention; and

[0019] FIG. 10 is an exploded view of the fourth embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] FIGS. 1 to 10 show the specific structures of various embodiments of the present invention.

[0021] Spatially relative terms, such as “upper,” “lower,” “front,” “rear,” “left,” “right,” and the like, may be used herein for ease of explanation to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or in operation, in addition to the orientation depicted in the figures.

[0022] FIGS. 1 to 3 show the specific structure of a first embodiment of the present invention.

[0023] A tight-fit riveting structure for a heat dissipation aluminum base and a heat pipe, comprising a heat dissipation aluminum base 10, a heat pipe 20 and a holder 30. The heat pipe 20 is clamped and fixed on the heat dissipation aluminum base 10. The holder 30 is mounted to the underside of the heat dissipation aluminum base 10.

[0024] The manufacture and the riveting assembly of the heat dissipation aluminum base 10, the heat pipe 20 and the holder 30 includes the following steps:

[0025] Step 1. Preparing the heat dissipation aluminum base 10 and the heat pipe 20, wherein, the heat pipe 20 includes one heat pipe. The heat pipe 20 is flat and thin, having a thickness less than a width between its left and right end faces. The upper and lower end faces of the heat pipe 20 are flat faces. The left and right end faces of the heat pipe 20 are curved faces (convex curved faces).

[0026] As shown in FIG. 3, when the heat dissipation aluminum base 10 is to be manufactured, a thin aluminum plate 101 is first prepared. The upper surface of the thin aluminum plate 101 is pressed downward to form an arched portion 102. The arched portion 102 protrudes below the thin aluminum plate 101. A cavity 103 is defined in the arched portion 102. The cavity 103 of the heat dissipation aluminum base 10 is a straight cavity. The cavity 103 has an upper end opening. The inner width of the cavity 103 corresponds to the outer width of the heat pipe 20. The depth of the cavity 103 is greater than the thickness of the heat pipe 20. Then, the bottom of the arched portion 102 is shaped upward to form two raised portions 104 respectively located on both sides of the upper end opening. The raised portions 104 protrude upward from the upper surface of the thin aluminum plate 101. The thickness of the raised portion 104 is less than the thickness of the thin aluminum plate 101. The depth of the cavity 103 after being shaped upward is equal to the thickness of the heat pipe 20.

[0027] Step 2. The heat pipe 20 is placed into the cavity 103 from the upper end opening of the cavity 103, and then the raised portions 104 on both sides of the upper end opening are pressed and deformed toward the heat pipe 20 to be flush with the upper surface of the thin aluminum plate 101, so that the outer surfaces of the bottom and the two sides of the heat pipe 20 are tightly attached to the heat dissipation aluminum base 10, and the tops of the two sides of the heat pipe 20 are riveted and fixed.

[0028] Step 3. The holder 30 is mounted to the underside of the heat dissipation aluminum base 10. The left and right sides of the heat dissipation aluminum base 10, corresponding to of the bottom of the cavity 103, have holder mounting portions 11, respectively. The holder 30 includes two holders to be respectively mounted to the undersides of the holder mounting portions 11 of the left and right sides of the heat dissipation aluminum base 10. The holder 30 has a first connection hole 31. The upper surface of the holder mounting portion 11 is pressed downward to form a first protrusion 105. The first protrusion 105 protrudes below the holder mounting portion 11. The first protrusion 105 passes through the first connection hole 31. The bottom of the first protrusion 105 is riveted and positioned to the bottom of the holder 30. The holder 30 may be locked to the holder mounting portion 11 with a screw. For example, the holder 30 has a second connection hole 32. The holder mounting portion 11 has a third connection hole 106. The second connection hole 32 and the third connection hole 106 are locked by a screw.

[0029] FIGS. 4 to 5 show the specific structure of a second embodiment of the present invention. The second embodiment is substantially similar to the first embodiment with the exceptions described hereinafter. The cavity 103 of the heat dissipation aluminum base 10 is a special-shaped cavity, not a straight cavity.

[0030] Because the heat dissipation aluminum base 10 is made by pressing a thin aluminum plate 101, the shape of the cavity 103 can be arbitrarily designed, so it can be suitable for any shape of the heat pipe 20.

[0031] FIGS. 6 to 8 show the specific structure of a third embodiment of the present invention. The third embodiment is substantially similar to the first embodiment with the exceptions described hereinafter. The heat pipe 20 includes two heat pipes (or more than two heat pipes). All the heat pipes 20 are arranged side by side in the cavity 103. When the bottom of the arched portion 102 is shaped upward, a second protrusion 107 is formed. The second protrusion 107 extends upward from the inner bottom surface of the cavity 103. The second protrusion 107 is gradually reduced upward. The bottom of the arched portion 102 is formed with a recess 108 aligned with the bottom of the second protrusion 107. The second protrusion 107 is located between the adjacent heat pipes 20 to separate the adjacent heat pipes 20. Both sides of the second protrusion 107 are concave arc surfaces, which are matched with the convex arc outer surfaces of both sides close to the bottom of the heat pipe 20. The second protrusion 107 plays a better role in positioning the adjacent heat pipes 20, and also improves the contact tightness and increase the contact area between the heat pipes 20 and the heat dissipation aluminum base 10.

[0032] FIGS. 9 to 10 show the specific structure of a fourth embodiment of the present invention. The fourth embodiment is substantially similar to the first embodiment with the exceptions described hereinafter. The heat pipe 20 includes two heat pipes (or more than two heat pipes). All the heat pipes 20 are arranged side by side in the cavity 103.