Heat sink uniform force structure

Abstract

The present application relates to a kind of heat dissipation seat force equalizing structure, with heat dissipation seat, adjusting piece, pressing piece;The heat dissipation seat has upper side and lower side, four corners are provided with at least one perforation, the perforation is worn screw lock component and is fixed to the upper side of heat source, the lower side of heat dissipation seat contacts the heat source, the upper side protrudes column, shaft rod is towards the radial direction of the column and is penetrated through the column and protrudes the surface of the column;The pressing piece has upper side and lower side and through hole, the pressing piece is arranged on the upper side of the heat dissipation seat, the through hole is penetrated through the upper side and lower side of the pressing piece, the pressing piece is correspondingly sleeved on the outside of the column by the through hole;The adjusting piece has a hollow barrel and both ends are open and are set to the outside of the column exposed pressing piece, the outer edge of the hollow barrel has a force part, a sliding groove part and the shaft rod sliding fit, the hollow barrel is displaced along the axial direction of the column, so that the adjusting piece forces the pressing piece to generate uniform downward pressure at the center of the heat dissipation seat.

Description

TECHNICAL FIELD

[0001] The present application relates to a heat sink uniform force structure, in particular to a heat sink uniform force structure that increases the uniformity of the contact between a heat dissipation component and a heat source. BACKGROUND

[0002] A heat dissipation component and a heat dissipation assembly are a common combination used to contact and conduct heat from a heat source. Generally, a heat dissipation component with good thermal conductivity is selected and combined with a heat pipe or a vapor chamber to uniformly conduct the heat generated by the heat source to a remote location for heat dissipation. However, the heat pipe or the vapor chamber needs to be fixed through a base or the base and a fixing seat arranged around the heat source.

[0003] Reference Figure 1a , Figure 1b The present application relates to a heat sink uniform force structure, in particular to a heat sink uniform force structure that increases the uniformity of the contact between a heat dissipation component and a heat source.

[0004] In order to provide high performance computing capabilities for electronic devices, high performance and high power chips are used. When the chip is operating, it generates a considerable amount of heat. Traditional computing chips have a package shell that covers the chip inside the inner wall to prevent damage to the chip. As the computing performance of the chip improves, the chip generates more heat than previous chips when operating. Because the package shell outside the chip has affected the efficiency of heat dissipation and heat conduction to the outside, most chips have been changed to a bare die form for setting. The surface of the bare die does not have a protective package shell, and the surface of the bare die is not a flat surface. Therefore, when the heat sink is fixed above the heat source 1 (bare die) and contacts the heat source 1, the locking point and the locking force must be adjusted one by one to ensure that the heat sink is tightly attached to the heat source 1 and to prevent the locking force from being too large to cause the heat source 1 (bare die) to be crushed and broken. However, because the assembly work is performed by manual or mechanical arm operation of an electric screwdriver, the production line assembly work is quite fast, so it is not possible to adjust the locking force one by one in sequence in the diagonal direction. Instead, each fixed screw is quickly locked in place, which can cause uneven stress in the four corners. Therefore, it is not possible to ensure that the heat sink is completely flat on the heat source 1 and that the locking force between the heat sink and the heat source 1 is appropriate.

[0005] Furthermore, the heat sink is not locked in a diagonal manner, which easily causes the heat sink to be tightly combined with the fixing base 2 only at four corners, and the heat source 1 located at the central position of the heat sink to be deformed due to the downward pressure of the heat sink around the four corners, so that the central position of the heat sink is raised upward to form a gap with the heat source 1, which cannot be tightly combined to form thermal resistance, and causes uneven heating or heat conduction failure. Furthermore, if the heat sink is directly locked downward with too much force, the bare chip is easily cracked and damaged.

[0006] Therefore, how to improve the complete and overall tight combination of the heat sink with the heat source 1 is the primary goal of the industry. SUMMARY

[0007] Therefore, in order to effectively solve the above problems, the main purpose of the present application is to provide a heat sink uniform force structure which can more evenly generate downward pressure on the heat source.

[0008] The present application provides a heat sink uniform force structure, characterized in that it comprises:

[0009] A heat sink has an upper side and a lower side, at least one through hole is provided at the four corners of the heat sink, a screw locking assembly is arranged in the through hole, which is used to fix the heat sink above the heat source, the lower side of the heat sink contacts the heat source, the upper side protrudes a protruding column, and an axle rod penetrates the protruding column radially and protrudes out of the outer edge of the protruding column;

[0010] A pressing piece has an upper side, a lower side and a through hole, the pressing piece is arranged on the upper side of the heat sink, the through hole penetrates the upper and lower sides of the pressing piece, and the pressing piece is correspondingly sleeved on the outer side of the protruding column through the through hole;

[0011] An adjusting piece has a hollow barrel, both ends of the hollow barrel are open and are sleeved on the outside of the protruding column, the outer edge of the hollow barrel has a sliding groove and a force applying part, the axle rod is in sliding fit with the sliding groove, and the hollow barrel is forced to rotate by operating the force applying part of the adjusting piece, and the axle rod slides along the sliding groove, so that the hollow barrel is axially displaced along the protruding column, and the pressing piece is forced by the adjusting piece to generate uniform downward pressure on the central position of the heat sink.

[0012] The heat sink uniform force structure, wherein the heat sink is locked and combined with a fixing base, a circuit board or a heat conducting component.

[0013] The heat sink uniform force structure, wherein the pressing piece is a plate body, a sheet body, a strip body or a frame body in the shape of a character, a cross, an X, an n or a mouth.

[0014] The uniform force structure of the heat sink, wherein the pressing member is arranged at the center of the upper side of the heat sink.

[0015] The uniform force structure of the heat sink, wherein the sliding groove portion has a first spiral groove and a second spiral groove, the first spiral groove and the second spiral groove correspond to each other, and the first spiral groove and the second spiral groove respectively have a first end, a second end, and a spiral groove, the first end is located at the highest point of the first spiral groove and the second spiral groove, the second end is located at the lowest point of the first spiral groove and the second spiral groove, the first end and the second end are respectively arranged at both ends of the spiral groove, and the first end and the second end are connected through the spiral groove, the end of the first end has a first positioning point, the end of the second end has a second positioning point, and the first spiral groove and the second spiral groove are 180 degrees apart from each other.

[0016] A uniform force structure of a heat sink, characterized by comprising:

[0017] A heat sink has an upper side and a lower side, at least one through hole is arranged at the four corners of the heat sink, a screw locking assembly is arranged in the through hole to fix the heat sink above a heat source, the lower side of the heat sink contacts the heat source, the upper side protrudes a protruding column, and a pair of protrusions is vertically protruded on both sides of the outer edge of the protruding column;

[0018] A pressing member has an upper side, a lower side, and a through hole, the pressing member is arranged on the upper side of the heat sink, the through hole penetrates the upper side and the lower side of the pressing member, and the pressing member is correspondingly sleeved on the outer side of the protruding column through the through hole;

[0019] An adjusting member has a hollow barrel, both ends of the hollow barrel are open and are sleeved on the outside of the protruding column, the outer edge of the hollow barrel has a sliding groove portion and a force applying portion, the protrusions are slidingly matched with the sliding groove portion, the hollow barrel is rotated by operating the force applying portion of the adjusting member, the protrusions slide along the sliding groove portion, the hollow barrel is axially displaced along the protruding column, and the pressing member is forced by the adjusting member to generate uniform downward pressure on the center of the heat sink.

[0020] The present application mainly provides a uniform force structure of a heat sink which can increase the uniform force between the heat sink and the heat source, thereby making the heat conduction more uniform and effectively improving the problem of thermal resistance caused by not being closely attached. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1a It is a schematic diagram of the existing structure;

[0022] Figure 1b It is a schematic diagram of the cross section of the existing structure;

[0023] Figure 2This is an exploded perspective view of the first embodiment of the heat sink force equalization structure of the present invention;

[0024] Figure 3a This is a cross-sectional view of the first embodiment of the heat sink force equalization structure of the present invention;

[0025] Figure 3b This is a cross-sectional view of the first embodiment of the heat sink force equalization structure of the present invention;

[0026] Figure 4 This is an exploded view of the second embodiment of the heat sink force equalization structure of the present invention.

[0027] Reference numerals: 1. Heat source; 2. Fixing base; 3. Heat sink; 31. Upper side; 311. Protrusion; 312. Shaft; 32. Lower side; 33. Through hole; 35. Accommodating space; 4. Adjusting component; 41. Hollow cylinder; 411. Sliding groove; 411. First spiral groove; 411a. Second spiral groove; 411b. First end; 4111. First positioning point; 4111a. Second end; 4112. Second positioning point; 4112a. Force application part; 5. Pressing component; 5a. Upper side; 5b. Lower side; 51. Through hole; 6. Screw assembly; 7. Heat-conducting component; 8. Fixing base; 9. Detailed Implementation

[0028] The above-mentioned objectives of the present invention and its structural and functional characteristics will be described with reference to the preferred embodiments in the accompanying drawings.

[0029] Please see Figure 2 , Figure 3a , Figure 3b Figure 1 shows a three-dimensional exploded and combined cross-sectional view of the heat sink force equalization structure of the present invention. As shown in the figure, the heat sink force equalization structure of the present invention includes: a heat sink 3, an adjusting member 4, and a pressing member 5.

[0030] The heat sink 3 has an upper side 31 and a lower side 32. At least one through hole 33 is provided at each of the four corners, and a screw assembly 6 passes through the through hole 33 to fix the heat sink 3 above a heat source 7, so that the lower side 32 of the heat sink 3 contacts the heat source 7. A protruding post 311 protrudes from the upper side 31, and a shaft 312 is provided vertically. The shaft 312 passes through the protruding post 311 radially and protrudes from the surface of the protruding post 311.

[0031] The heat sink 3 is locked together with a fixed base, a circuit board, or a heat-conducting component.

[0032] Alternatively, the shaft 312 can be replaced by a pair of protrusions, which are integrally formed by extending vertically outward from the outer edge surface of the protrusion 311.

[0033] The pressing member 5 has an upper side 5a and a lower side 5b and a through hole 51, the pressing member 5 is arranged at the center of the upper side 31 of the heat dissipation seat 3, the through hole 51 penetrates the upper side 5a and the lower side 5b of the pressing member 5, the pressing member 5 is correspondingly sleeved on the outer side of the convex column 311 through the through hole 51, and the pressing member 5 is a plate body or a sheet body or a strip body or a frame body in the form of a character, a cross, an X, an n or a mouth.

[0034] The adjusting member 4 has a hollow barrel 41 and is open at both ends and is sleeved on the outside of the convex column 311, the outer edge of the hollow barrel 41 has a sliding groove 411 and a force applying part 412, the force applying part 412 can be in the form of a tab or a shaft rod, the shaft rod 312 is in sliding cooperation with the sliding groove 411, the sliding groove 411 has a first spiral groove 411a and a second spiral groove 411b, and the first spiral groove 411a and the second spiral groove 411b respectively have a first end 4111, a second end 4112 and a spiral groove 4113, the first end 4111 is located at the highest point of the first spiral groove 411a and the second spiral groove 411b, the second end 4112 is located at the lowest point of the first spiral groove 411a and the second spiral groove 411b, the first end 4111 and the second end 4112 are respectively arranged at the two ends of the spiral groove 4113 and are connected through the spiral groove 4113, the end of the first end 4111 has a first positioning point 4111a, the end of the second end 4112 has a second positioning point 4112a, the first spiral groove 411a and the second spiral groove 411b are different from each other by 180 degrees, the first end 4111 is the starting point of the sliding groove 411 and is arranged close to the upper end of the hollow barrel 41, the second end 4112 is the dead point of the sliding groove 411 and is arranged close to the lower end of the hollow barrel 41, by operating the force applying part 412 of the adjusting member 4 to force the hollow barrel 41 to rotate and the shaft rod 312 to slide along the sliding groove 411, when the shaft rod 312 starts to slide from the second end 4112 (the dead point) of the sliding groove 411 and moves to the first end 4111 (the starting point) of the sliding groove 411, the hollow barrel 41 is axially displaced along the convex column 311 and is pressed against the pressing member 5 from the lower end of the adjusting member 4, the pressing member 5 is forced to generate uniform downward pressure on the center of the heat dissipation seat 3, and the downward pressure of the pressing member 5 on the heat dissipation seat 3 can be finely adjusted by the adjusting member 4, so that the heat source 7 (bare chip) is not damaged by excessive downward pressure at one time, and the complete downward pressure of the center of the heat dissipation seat 3 on the heat source 7 can also be increased by the pressing member 5.

[0035] Reference Figure 4As shown in the figure, the second embodiment of the heat dissipation seat of the present application is a perspective exploded view. The second embodiment has the same structure as the first embodiment, and thus will not be described here. However, the second embodiment is different from the first embodiment in that the heat dissipation seat 3 and the heat source 7 have a containing space 35. The containing space 35 has at least one heat conduction component 8. The heat conduction component 8 is arranged above the heat source 7. The pressing member 5 can force the heat dissipation seat 3 to generate uniform downward force, so that the heat conduction component 8 can be more closely combined with the heat source 7. The heat conduction component 8 is a heat pipe or a uniform plate. The second embodiment uses a heat pipe as an illustrative embodiment, but is not limited thereto.

[0036] Referring back to Figure 2 , Figure 3a , Figure 3b As shown in the figure, when the perforations 33 at the four corners of the heat dissipation seat 3 are penetrated by a screw locking unit 6 to fix the heat dissipation seat 3 and a fixed base 9, the pressing member 5 is pressed by the hollow barrel 41 of the adjusting member 4. The sliding groove part 411 of the hollow barrel 41 and the shaft 312 are in sliding cooperation. When the force part 412 of the adjusting member 4 is operated, the hollow barrel 41 is forced to rotate. The sliding groove part 411 is guided by the shaft 312, so that the hollow barrel 41 moves axially and applies pressure downward to the pressing member 6. The pressing member 6 generates uniform downward pressure to the center of the heat dissipation seat 5, so that the heat dissipation seat 3 can be closely combined with the heat source 7 without gaps to improve the heat conduction efficiency. In addition, the slow adjustment of the adjusting member can also avoid the sudden excessive pressure of the heat dissipation seat 3 on the heat source 7 (bare chip) to cause damage.

[0037] The present application mainly provides a heat dissipation seat 3 and a heat source 7 that can increase uniform stress between the heat dissipation seat 3 and the heat source 7, so that heat conduction is more uniform, and the problem of heat resistance caused by not closely combined is effectively improved.

Claims

1. A force-equalizing structure for a heat sink, characterized in that, Include: A heat sink has an upper side and a lower side. At least one through hole is provided at each of the four corners of the heat sink. A screw assembly is inserted through the through hole for fixing the heat sink above a heat source. The lower side of the heat sink contacts the heat source. A protruding post extends from the upper side. A shaft passes through the protruding post radially and protrudes from the outer edge of the protruding post. A pressing component has an upper side, a lower side, and a through hole. The pressing component is disposed on the upper side of the heat sink. The through hole passes through the upper and lower sides of the pressing component. The pressing component is correspondingly sleeved on the outer side of the protrusion through the through hole. An adjusting member has a hollow cylindrical body with open ends and fitted onto the outside of a protruding post. The outer edge of the hollow cylindrical body has a sliding groove and a force-applying part. The aforementioned shaft slides in cooperation with the sliding groove. By operating the force-applying part of the adjusting member, the hollow cylindrical body is forced to rotate and the shaft slides along the sliding groove, causing the hollow cylindrical body to be displaced axially along the protruding post. The adjusting member also forces the pressing member to generate a uniform downward pressure toward the center of the heat sink.

2. The heat sink force-equalizing structure as described in claim 1, characterized in that: The heat sink is locked together with a fixed base, a circuit board, or a heat-conducting component.

3. The heat sink force-equalizing structure as described in claim 1, characterized in that: The pressed component is a plate, sheet, strip, or frame in the shape of a straight line, cross, X, n, or square.

4. The heat sink force-equalizing structure as described in claim 1, characterized in that: The pressing component is located at the center of the upper side of the heat sink.

5. The heat sink force-equalizing structure as described in claim 1, characterized in that: The sliding groove has a first spiral channel and a second spiral channel, which correspond to each other. The first spiral channel and the second spiral channel each have a first end and a second end and a spiral groove. The first end is located at the highest point of the first spiral channel and the second spiral channel, and the second end is located at the lowest point of the first spiral channel and the second spiral channel. The first end and the second end are respectively located at both ends of the spiral groove and are connected by the spiral groove. The end of the first end has a first positioning point, and the end of the second end has a second positioning point. The first spiral channel and the second spiral channel are 180 degrees apart.

6. A force-equalizing structure for a heat sink, characterized in that, Include: A heat sink has an upper side and a lower side. At least one through hole is provided at each of the four corners of the heat sink. A screw assembly is inserted through the through hole to fix the heat sink above a heat source. The lower side of the heat sink contacts the heat source. A protruding post extends from the upper side. A pair of protrusions protrude vertically from both sides of the outer edge of the protruding post. A pressing component has an upper side, a lower side, and a through hole. The pressing component is disposed on the upper side of the heat sink. The through hole passes through the upper and lower sides of the pressing component. The pressing component is correspondingly sleeved on the outer side of the protrusion through the through hole. An adjusting member has a hollow cylindrical body with open ends and fitted onto the outside of a protrusion. The outer edge of the hollow cylindrical body has a sliding groove and a force-applying part. The aforementioned protrusion slides in conjunction with the sliding groove. By operating the force-applying part of the adjusting member, the hollow cylindrical body is forced to rotate and the protrusion slides along the sliding groove, causing the hollow cylindrical body to be displaced axially along the protrusion. The adjusting member forces the pressing member to generate a uniform downward pressure toward the center of the heat sink.

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