TWM652820U - Heat dissipation apparatus - Google Patents

Abstract

A heat dissipation device includes a fixed base and a radiator. The fixing base includes a bottom wall, two side walls spaced apart from each other and connected to the bottom wall, a plurality of support ribs protruding inward from the side walls and supporting an electronic component, and a plurality of stoppers connected to the side walls. Each limiting piece cooperates with the corresponding side wall to define a long slot. The heat sink includes a base plate in contact with the electronic component, a plurality of fins extending upward from the base plate, two side extension plates each extending outward and downward from any fin, and two side extension plates respectively extending from the side extension plates. Hook fasteners that protrude and fasten the stoppers. Through the cooperation of the hook fasteners and the limiting parts, the heat sink can be closely connected to the electronic component without using screws for locking.

Description

Cooling device

The present invention relates to a heat dissipation device, in particular to a heat dissipation device that can fix a fin heat sink on an electronic component without using screws.

A fin radiator is a very common heat dissipation device. The fin radiator usually includes a plate body with a flat surface, and a plurality of fin portions extending vertically from the plate body and arranged at intervals from each other. By placing the flat surface of the plate body in contact with the electronic components, the waste heat generated when the electronic components are running can be conducted to the plate body, and then the heat is dissipated into the air through the fins. The fin radiator By arranging the fin portions at intervals, the contact area between the fin portions and the air is maximized, and ultimately better heat dissipation efficiency is obtained.

However, at present, when the fin heat sink is fixed on an electronic component, locking parts such as screws are mostly used to fix the fin heat sink on the electronic component through locking to ensure that the board body can be stable. ground contact with the electronic component. However, this fixing method not only requires tools to disassemble and assemble, making maintenance difficult, but the screws are also prone to chipping or rusting and other factors that prevent smooth disassembly and assembly. In addition, the aforementioned fixing method requires opening holes for screws to pass through the electronic components, resulting in low design flexibility and low space utilization of the electronic components.

Therefore, the purpose of the present invention is to provide a heat dissipation device that does not require the use of screws.

Therefore, the new heat dissipation device is suitable for an electronic component. The heat dissipation device includes a fixing base surrounding an internal space defined for accommodating the electronic component and extending along a length direction, and a heat sink pressing against the electronic component.

The fixing base includes a bottom wall, two side walls spaced apart from each other along a width direction perpendicular to the length direction and connected to the bottom wall, and a plurality of support ribs protruding from the side walls into the internal space and supporting the electronic component. , and a plurality of limiting members connected to the side walls and located above the support ribs along a height direction perpendicular to the length direction and the width direction. Each limiting piece cooperates with the corresponding side wall to define a long slot extending along the length direction.

The heat sink includes a bottom plate located in the internal space and with a bottom surface in contact with the top surface of the electronic component, a plurality of fins extending upward from the top surface of the bottom plate along the height direction and spaced apart from each other along the width direction, and two fins each free of charge. A side extension plate with fins extending outward along the width direction and extending downward along the height direction, and two hooks respectively protruding from the side extension plates along the width direction and engaging the stoppers. .

The function of this new model is that through the cooperation of the hook fasteners and the limiting parts, the radiator can be placed close to the top surface of the electronic component without using screws for locking, so there is no need to use screws during installation. Tools can improve operational convenience. In addition, the design of supporting the electronic component through the supporting ribs eliminates the need to reserve a place for screws to pass through the electronic component, thereby greatly maintaining the design flexibility of the electronic component.

Before the present invention is described in detail, it should be noted that similar elements are represented by the same numbers in the following description.

Referring to Figures 1 and 2, a first embodiment of the new heat dissipation device includes a fixed base 1 extending along a length direction A, and a radiator 2 buckled on the fixed base 1. The fixed base 1 includes a bottom wall 11 extending along the length direction A, two side walls 12 spaced apart from each other along a width direction B perpendicular to the length direction A and connected to the bottom wall 11 , and four side walls 12 extending along the length direction A. The support ribs 13 protruding inward in the width direction B, and two stoppers 14 respectively connected to the side walls 12 and located above the support ribs 13 along a height direction C perpendicular to the length direction A and the width direction B, and two baffles 15 extending upward from the bottom wall 11 along the height direction C.

Referring to Figures 1, 2, and 3, the bottom wall 11 and the side walls 12 cooperate to define an internal space D extending along the length direction A. The support ribs 13 are arranged in groups of two on the inner surfaces of the side walls 12 respectively. The two support ribs 13 of each group are spaced apart from each other along the length direction A and are located in the internal space D. Each support rib 13 has a receiving portion 131 located inside the corresponding side wall 12 along the width direction B, and two connections connecting the receiving portion 131 and the side wall 12 along the width direction B and spaced apart from each other along the length direction A. Department 132. The receiving portion 131 cooperates with the side wall 12 to define a gap E extending along the length direction A. The gap E communicates upward with the internal space D along the height direction C and downward with the outside world. Each limiting member 14 has a blocking wall portion 141 located above the side wall 12 along the height direction C and extending along the length direction A, and two blocking wall portions 141 and the side wall 12 are connected to each other along the height direction C. Connecting portions 142 are spaced apart along the length direction A. The side wall 12 , the blocking wall portion 141 , and the connecting portions 142 define a long groove F extending along the length direction A. The baffles 15 are located outside the internal space D along the length direction A.

Referring to Figures 2, 3, and 4, the radiator 2 includes a bottom plate 21 located in the internal space D. A plurality of heat sinks extend upward from the top surface of the bottom plate 21 along the height direction C and are spaced apart from each other along the width direction B. fins 22, two side extension plates 24 extending outwardly along the width direction B and downward along the height direction C from the top ends of the two outermost fins 22, and two side extension plates 24 respectively. The hook parts 25 protrude outward along the width direction B and engage the limiting parts 14 . It should be noted that each side extension plate 24 can also be connected to any fin 22 on the opposite side. Even as shown in FIG. 4 , the side extension plates 24 can be connected to the same fin 22 at the same time. In addition, the connection points between the side extension plates 24 and the fins 22 may also be at the side instead of the top. In addition to protruding outwards, the hook fasteners 25 can also be designed to protrude inward, and other structures only need to be modified accordingly.

When the present invention is actually used, an electronic component 3 extending along the length direction A is placed in the internal space D, and the bottom surface of the electronic component 3 is supported through the receiving portions 131. The blocking pieces 15 located outside the electronic component 3 in direction A perform auxiliary limiting. Then, the radiator 2 is buckled downwardly to the fixing base 1 along the height direction C. During the foregoing process, the inclined surfaces of the hooking parts 25 facing outwards will be pushed outward against the stoppers along the width direction B. Depending on the materials of the wall portion 141 of the fixed base 1 and the radiator 2, the aforementioned actions may push the limiting members 14 outward, or cause the side extension plates 24 to fold inward. Of course, It may be both, so that the hooking parts 25 can pass downward through the blocking wall parts 141 along the height direction C. When the hooking parts 25 are respectively aligned with the long slots F, the The hooking parts 25 no longer push against the blocking wall portions 141 , and are respectively stretched on the blocking parts 141 due to elastic reset (which may be the elasticity of the limiting parts 14 , the side extension plates 24 , or both). In the long slot F, the radiators 2 are fixed on the fixing base 1 to complete the buckling, and at the same time, the bottom surface of the bottom plate 21 is pressed against the top surface of the electronic component 3 (actually under the bottom plate 21 And a heat dissipation patch 4) is laid on the top surface of the electronic component 3. This new type does not require the use of screws for locking during the installation process, so there is no need to use tools and there will be no problems such as chipping or rusting of the screws. At the same time, there is no need to reserve holes for screws to pass through the electronic component 3, which greatly maintains the electronic component. Element 3 design flexibility.

Referring to Figures 5 and 6, the first embodiment can also adopt the design of Figures 5 and 6, that is, the fixing base 1 also includes two joints respectively connected to the side walls 12 and located outside the elongated slots F along the width direction B. The two ends of each shield 16 extend obliquely and connect to the corresponding side wall 12. Accordingly, the shield 16 cooperates with the side wall 12 to create a long groove F opened along the height direction C and connected to the long slot F. The gap G provides another different implementation mode.

Referring to Figures 7, 8, and 9, a second embodiment of the new heat dissipation device of the present invention is shown. The second embodiment is substantially the same as the first embodiment, except that the fixing base 1 includes four The limiting members 14 are respectively arranged on the side walls 12 in groups of two. Each limiting member 14 has a blocking wall portion 141 located inside the corresponding side wall 12 along the width direction B and pressing against the hook member 25 , and two blocking wall portions 141 connected to the side wall 12 along the width direction B. And the connecting portions 142 are spaced apart from each other along the longitudinal direction A. The side wall 12 , the blocking wall portion 141 , and the connecting portions 142 define a long groove F extending along the height direction C. In addition, the fixed base 1 also includes four positioning pieces 17 respectively arranged on the side walls 12 in groups of two. Each set of two positioning pieces 17 extends inwardly from the side wall 12 along the width direction B. In the second embodiment, the hooking members 25 are blocked downward by the blocking wall portions 141 along the height direction C, but do not extend into the elongated slots F. The two positioning pieces 17 provided on the same side wall 12 are respectively located outside the corresponding side extension plates 24 along the length direction A, and cooperate with each other to limit the heat sink 2 along the length direction A. The positioning pieces 17 can ensure that the radiator 2 can be assembled in the correct position, thereby avoiding the risk that the entire module cannot be successfully installed and fixed due to deviation.

Referring to Figures 10 and 11, the second embodiment can also be designed as shown in Figures 10 and 11, that is, each limiting member 14 also has a connecting wall portion 141, the connecting portions 142, and a corresponding side wall. The mask part 143 of 12. This can improve the strength of the blocking wall portions 141, and at the same time, the shielding portion 143 can have an arc-shaped shape, so that during the process of assembling the radiator 2 to the fixing base 1, the hooks 25 It can be guided by the arc surfaces of the shield portions 143 , thereby making it easier to pass downward through the limiting members 14 .

To sum up, the present invention can close the heat sink 2 to the top surface of the electronic component 3 through the cooperation of the hook fasteners 25 and the limiting parts 14 without using screws for locking. No tools are required during installation, which improves operational convenience. In addition, the electronic component 3 is supported by the supporting ribs 13 , so that the electronic component 3 does not need to reserve a place for screws to pass through, and the design flexibility of the electronic component 3 is greatly maintained, while the side extension plates 24 are bent. The extended design allows the radiator 2 to have room for inward deformation, thereby making it easier to assemble and disassemble the radiator 2, thus achieving the purpose of the present invention.

However, the above are only examples of the present invention, and should not be used to limit the scope of the present invention. All simple equivalent changes and modifications made based on the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by this new patent.

1: Fixed seat 11: Bottom wall 12:Side wall 13: Support rib 131: Undertaking Department 132: Interface Department 14: Limiting parts 141:Blocking wall part 142:Connection part 143: Mask part 15:Block 16: Mask 17: Positioning film 2: Radiator 21: Bottom plate 22:Fins 24: Side extension plate 25:Hook fasteners 3: Electronic components 4:Heat dissipation patch A:Length direction B: Width direction C: Height direction D:Inner space E: Gap F: long groove G:Gap

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is an exploded perspective view illustrating a first embodiment of the new heat dissipation device of the present invention; Figure 2 is a perspective view illustrating the combined appearance of Figure 1; Figure 3 is a front cross-sectional view illustrating the internal structure of Figure 2; Figure 4 is a front view illustrating another aspect of a heat sink in the first embodiment; Figure 5 is an incomplete perspective view illustrating another aspect of the first embodiment; Figure 6 is a front cross-sectional view illustrating the internal structure of Figure 5; Figure 7 is a perspective view illustrating a second embodiment of the novel heat dissipation device; Figure 8 is a three-dimensional exploded view, illustrating the exploded appearance of Figure 7; Figure 9 is a front cross-sectional view illustrating the internal structure of Figure 7; Figure 10 is an incomplete perspective view illustrating another aspect of the second embodiment; and FIG. 11 is a front cross-sectional view illustrating the internal structure of FIG. 10 .

1: Fixed seat

11: Bottom wall

12:Side wall

13: Support rib

131: Undertaking Department

132: Interface Department

14: Limiting parts

141:Blocking wall part

142:Connection part

15:Block

2: Radiator

21: Bottom plate

22:Fins

24: Side extension plate

25:Hook fasteners

3: Electronic components

4:Heat dissipation patch

A:Length direction

B: Width direction

C: Height direction

D:Inner space

E: Gap

F: long slot

Claims (8)

A heat dissipation device suitable for an electronic component. The heat dissipation device includes: A fixed base is defined around an internal space for accommodating the electronic component and extending along a length direction. The fixed base includes a bottom wall, two spaced apart from each other along a width direction perpendicular to the length direction and connected to the bottom wall. The side walls of the wall, a plurality of support ribs protruding from the side walls into the internal space and supporting the electronic components, and a plurality of support ribs connected to the side walls and located along a height direction perpendicular to the length direction and the width direction. Limiting members above the ribs, each limiting member cooperates with the corresponding side wall to define a long slot extending along the length direction; and A radiator presses against the electronic component and includes a base plate located in the internal space with a bottom surface in contact with the top surface of the electronic component, and a plurality of plurality of base plates extending upward from the top surface of the base plate along the height direction and arranged at intervals along the width direction. fins, two side extension plates each extending outward from any fin along the width direction and extending downward along the height direction, and two side extension plates respectively protruding from the side extension plates along the width direction and buckling the Hook fasteners and other limiting parts. The heat dissipation device according to claim 1, wherein the fixed base includes two limiting members respectively connected to the side walls, and each limiting member has a spacer located above the side wall along the height direction and extending along the length direction and pressing A blocking wall portion corresponding to the hook fastener, and two connecting portions connecting the blocking wall portion and the side wall along the height direction and spaced apart from each other along the length direction, the side wall, the blocking wall portion, and the connecting portions The long groove is defined around the hook, and the hook member extends along the width direction and is placed in the long groove. The heat dissipation device of claim 2, wherein the fixing base further includes two shields respectively connected to the side walls and located outside the elongated slots along the width direction. The heat dissipation device of claim 1, wherein each limiting member of the fixed base has a blocking wall portion located inside the corresponding side wall along the width direction and pressing against the hooking member, and two blocking members along the width direction. The connecting portions connect the blocking wall portion and the side wall and are spaced apart from each other along the length direction. The side wall, the blocking wall portion, and the connecting portions surround and define the long slot. The heat dissipation device of claim 4, wherein each limiting member of the fixed base also has a cover portion connected to the blocking wall portion, the connecting portions, and the corresponding side wall. The heat dissipation device of claim 1, wherein each support rib of the fixing base has a receiving portion located inside the corresponding side wall along the width direction and against the electronic component, and two connecting portions connected to the receiving portion along the width direction. The receiving portion cooperates with the side wall to define a gap that communicates with the internal space along the height direction and extends along the length direction. The heat dissipation device according to claim 1, wherein the fixing base further includes four positioning pieces arranged in groups of two on the side walls, and the two positioning pieces of each group are extended from the side wall along the width direction. Extend inwardly and are located on opposite sides of the heat sink along the length. The heat dissipation device of claim 1, wherein the mounting base further includes at least one baffle extending upward from the bottom wall along the height direction, and the at least one baffle is located outside the electronic component along the length direction.

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