TWI429389B - Heat sink assembly - Google Patents

Description

Radiator combination

The present invention relates to a heat sink assembly, and more particularly to a heat sink assembly for additional card heat dissipation.

In recent years, with the rapid development of computer technology, the integration of various additional cards installed in the interior such as memory cards and display cards has become higher and higher, and the electronic components mounted on various additional cards generate heat during operation. Large, if not effective heat dissipation will affect the normal operation of the add-on card.

The industry usually pre-installs a heat sink on the surface of the add-on card to assist in heat dissipation before the add-on card is installed in the computer. The add-on card has a bottom end for insertion on a computer and a top end disposed opposite the bottom end. The heat sink is formed by extrusion of an aluminum material having good thermal conductivity, and has a first heat dissipation plate attached to one side of the additional card and a second heat dissipation plate attached to the other side of the additional card. The first and second heat dissipation plates of the heat sink are connected at the top by a pressing portion that abuts against the top end of the additional card. In the process of inserting the add-on card with the heat sink into the computer, the bottom end of the add-on card is usually inserted into the computer by clamping the heat sink with the tool and pressing down the pressing portion of the heat sink. During this process, the top end of the additional card is outwardly abutted against the pressing portion to cause a certain misalignment between the heat sink and the additional card to affect the heat dissipation performance of the heat sink.

In view of this, it is necessary to provide a heat sink set with stable structure and good heat dissipation performance. Hehe.

A heat sink assembly for dissipating heat from an electronic component on an add-on card, comprising a heat sink having an elongated pressing portion and first and second heat dissipating plates extending downward from opposite sides of the pressing portion The additional card is sandwiched between the first and second heat dissipation plates, and the heat sink assembly further includes a fastening member for clamping the additional card and the heat sink, the fastening component including a span a top plate disposed on the pressing portion and front and rear side plates extending downward from opposite sides of the top plate, the additional card and the first and second heat dissipation plates being sandwiched between the front and rear side plates of the fastening member, the front The side plate extends toward the rear side plate to form a spring piece.

Compared with the prior art, the holding member clamps the first and second heat dissipation plates of the additional card and the heat sink between the front and rear side plates thereof, and is provided by the elastic plate on the front side plate. The additional card and the first and second heat dissipating plates are used to enhance the clamping strength to ensure that the additional card and the heat sink do not be misaligned during the assembly process, thereby ensuring the heat dissipation performance of the heat sink assembly.

10‧‧‧Addition card

11‧‧‧Top

12‧‧‧ bottom

13‧‧‧Electronic components

21‧‧‧First heat absorbing plate

212‧‧‧Card Department

22‧‧‧second heat absorbing plate

221‧‧‧ hook

30‧‧‧Clamp

31‧‧‧Ontology

32‧‧‧Connecting Department

33‧‧‧ square slot

50‧‧‧ radiator

51‧‧‧ Pressing Department

52‧‧‧First heat sink

521‧‧‧ Pressing the wall

522‧‧‧ bottom

523‧‧‧Connecting wall

524‧‧‧Top

53‧‧‧second heat sink

54‧‧‧stops

60‧‧‧Holding parts

61‧‧‧ top board

62‧‧‧ front side panel

621‧‧‧ first arrival at the top

622‧‧‧ second arrival at the top

End of 623‧‧‧

624‧‧‧Perforation

625‧‧‧Shrap

63‧‧‧ rear side panel

Figure 1 is an assembled view of a heat sink assembly and an add-on card of the present invention.

2 is an exploded view of the heat sink assembly and the add-on card of FIG. 1.

Figure 3 is a side elevational view of the fastener of Figure 1 prior to assembly of the heat sink.

Figure 4 is a side elevational view of the assembly of the fastener and the heat sink of Figure 3.

Figure 5 is a side elevational view of the fastener of Figure 3 assembled with the heat sink.

The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, the heat sink assembly of the present invention is used to dissipate heat from an add-on card 10, which may be a memory card, a display card, or the like in a computer. The heat sink assembly includes first and second heat absorbing plates 21 and 22 respectively located on opposite sides of the additional card 10, and straddles the additional card 10 for respectively sandwiching opposite ends of the first and second heat absorbing plates 21 and 22. The two clamps 30 are disposed on the additional card 10 and sandwich the additional card 10, the heat absorbing plates 21 and 22, and a heat sink 50 and a holding member 60 inside the clamp 30.

The add-on card 10 is an elongated board having a bottom end 12 that mates with a computer motherboard (not shown) and a top end 11 that is opposite the bottom end 12. The plurality of electronic components 13 are spaced apart from each other on the front and rear sides of the add-on card 10.

The first and second heat absorbing plates 21 and 22 are longitudinally long plates made of a material having better thermal conductivity. The first and second heat absorbing plates 21 and 22 are respectively disposed on the front and rear sides of the additional card 10, and the inner surfaces thereof are respectively adhered to the electronic components 13 on the front and rear sides of the additional card 10 to absorb the electrons. The heat generated by element 13. The left and right opposite ends of the second heat absorbing plate 22 extend toward the additional card 10 with two "L" shaped clasps 221. Two opposite ends of the left and right opposite ends of the first heat absorbing plate 21 protrude outwardly from the two hook portions 221 corresponding to the hooks 221 .

Each clamp 30 includes two mutually parallel bodies 31 and two connecting portions 32 respectively connecting the ends of the body 31. Each body 31 is a metal sheet having a "U" shape. The connecting portions 32 respectively connect the two ends of the open ends of the two bodies 31, so that a square groove 33 is formed in the middle of the upper end of the clamp 30. The distance between the two bodies 31 of each jig 30 is slightly less than or equal to the sum of the thicknesses of the additional card 10, the first and second heat absorbing plates 21, 22. When assembled, the connecting portions 32 of the clamp 30 are respectively disposed at the left and right ends of the top end 11 of the additional card 10, and the two bodies 31 are respectively opposite to the outer surface of the first heat absorbing plate 22 and the second heat absorbing plate 21 The surfaces are against each other.

The heat sink 50 is made of a material having better thermal conductivity, and includes an elongated pressing portion 51, a first heat dissipation plate 52 and a second heat dissipation plate respectively extending downward from opposite front and rear sides of the pressing portion 51. And two stopper portions 54 extending perpendicularly from opposite left and right ends of the second heat dissipation plate 53 toward the direction of the first heat dissipation plate 52. The heat sink 50 can be placed across the top end 11 of the add-on card 10, the length of the pressing portion 51 being substantially equal to the length of the add-on card 10. The second heat dissipation plate 53 has a flat shape, and its shape and size correspond to the shape and size of the additional card 10, respectively. The first heat dissipation plate 52 includes two juxtaposed substantially "T" shaped pressing walls 521 and a strip-shaped connecting wall 523 connected between the two pressing walls 521. Each of the pressing walls 521 is gradually inclined from the top end 524 of the connection with the pressing portion 51 toward the direction of the second heat radiating plate 53, and then obliquely extends away from the second heat radiating plate 53 to form a raised bottom end 522. After assembly, the heat sink 50 can be easily removed by applying an external force to the bottom end 522. The size of each pressing wall 521 is substantially equal to the size of the body 31 of the jig 30. The minimum distance between the pressing wall 521 and the second heat dissipation plate 53 is substantially equal to the distance between the two bodies 31 of the jig 30. The connecting wall 523 is connected between the top end 524 of the pressing wall 521 and is closer to the second heat radiating plate 53 than the top end 524 of the pressing wall 521 so that the center of the heat sink 50 is located at the connecting wall 523. Correspondingly, a depression (not shown) is formed.

The holding member 60 includes a rectangular top plate 61 and a front side plate 62 and a rear side plate 63 extending downward from opposite front and rear sides of the top plate 61, respectively. Referring also to FIG. 3, the left (or right) view of the retaining member 60 is similar to the left (or right) view of the heat sink 50 described above. The holding member 60 can be disposed at a position where the connecting wall 523 is disposed at the center of the heat sink 50, and the width of the top plate 61 is substantially equal to the distance between the connecting wall 523 and the second heat radiating plate 53, and the top plate thereof The length of 61 is approximately equal to the length of the connecting wall 523. The rear side plate 63 has a flat shape and can just abut against the second heat dissipation plate 53 of the heat sink 50. The outer surface. The front side panel 62 includes a first abutting top 621 extending obliquely from the top end of the top panel 61 to the rear side panel 63, a second abutting top 622 extending from the bottom end of the first abutting top 621, and from the second The bottom end of the top portion 622 abuts the raised end 623 that extends away from the direction of the rear side panel 63. Similarly, after assembly, the fastener 60 can be easily removed by applying an external force to the tip 623. The slope of the second abutting top 622 is substantially equal to the slope of the pressing wall 521 of the heat sink 50 and greater than the slope of the first abutting top 621. A rectangular through hole 624 is defined in the front side plate 62 at the intersection of the first abutting top 621 and the second abutting top 622. The bottom end of the through hole 624 is flush with the bottom end of the first abutting top 621, and the distance between the top end and the top plate 61 is slightly larger than the height of the connecting wall 523. The front side panel 62 further includes a strip-shaped elastic piece 625 extending obliquely from the bottom end of the through hole 624 to the rear side plate 63. The shrapnel 625 is sized to be equal to the size of the perforation 624 and can be received within the perforation 624 just as it is squeezed toward the direction of the perforation 624.

3 to 5 are schematic views showing the assembly of the holding member 60 on the heat sink 50. First, as shown in FIG. 3, the holding member 60 is aligned with the recess where the central connecting wall 523 of the heat sink 50 is located, and the elastic piece 625 on the front side plate 62 of the holding member 60 is in a natural state of being inwardly convex. Then, as shown in FIG. 4, the holding member 60 is pressed down, so that the rear side plate 63 of the holding member 60 moves downward along the second heat radiating plate 53 of the heat sink 50, while the second abutting portion 622 of the front side plate 62. After passing through the outer surface of the connecting wall 523 and continuing to move downward, the elastic piece 625 is pressed outward by the connecting wall 523 to be deformed in the direction of the through hole 624, and is gradually received inside the through hole 624, and is firstly received by the front side plate 62. The top 621 is on the same plane. As shown in FIG. 5, the holding member 60 is continuously pressed down. When the top end of the elastic piece 625 passes through the connecting wall 523, the elastic piece 625 is no longer pressed by the connecting wall 523 to return to the natural state of inwardly protruding, and at the same time It can be heard that the shrapnel 625 restores a "beep" sound. Finally, the top plate 61 of the holding member 60 is attached to the pressing portion 51 of the heat sink 50, and the front side The first abutting portion 621 of the plate 62 just presses against the outer surface of the connecting wall 523. The elastic piece 625 protrudes from the lower side of the connecting wall 523, and the second abutting top portion 622 is disposed in the interval between the pressing walls 521. The minimum distance between the second abutting top 622 and the second heat radiating plate 53 is smaller than the minimum distance between the pressing wall 521 and the second heat radiating plate 53.

At the time of assembly, the additional card 10 is interposed between the first and second heat absorbing plates 21, 22. The two hooks 221 of the second heat absorbing plate 22 are locked in the two latching portions 212 of the first heat absorbing plate 21 to prevent the first heat absorbing plate 21 from moving left and right relative to the second heat absorbing plate 22. The two clamps 30 respectively sandwich the first and second heat absorbing plates 21 and 22 on the left and right ends of the additional card 10 to prevent the first heat absorbing plate 21 from moving back and forth relative to the second heat absorbing plate 22. At this time, the connecting portion 32 of the clamp 30 abuts against the top end 11 of the additional card 10, and the two bodies 31 respectively press against the outer surfaces of the first and second heat absorbing plates 21, 22 to make the first and second heat absorbing plates 21 The inner surfaces of the 22 are respectively attached to the electronic components 13 on the front and rear sides of the add-on card 10.

The heat sink 50 is spanned on the front and rear sides of the add-on card 10, and the additional card 10 is tightly clamped to the first and second heat sinks together with the first and second heat absorbing plates 21, 22 and the clamp 30. Between the plates 52, 53. The holding member 60 is spanned in the center of the heat sink 50, and the additional card 10 is clamped to the front and rear side plates 62, 63 together with the first and second heat absorbing plates 21, 22, the clamp 30, and the heat sink 50. between. The pressing portion 51 of the heat sink 50 is attached to the connecting portion 32 of the jig 30, and the first and second heat radiating plates 52 and 53 are closely attached to the outer sides of the main bodies 31 of the jig 30, respectively. The stopper portion 54 of the heat sink 50 prevents the additional card 10 from being displaced in the left-right direction together with the first and second heat absorbing plates 21, 22 and the jig 30. The pressing walls 521 of the heat sink 50 respectively abut against the bodies 31 on the front side of the two jigs 30, and the lower end portions thereof are deformed outwardly to be deformed to generate the pressing force of the pressing jig 30. The rear side plate 63 of the fastening member 60 is pressed against the outer surface of the second heat dissipation plate 53 of the heat sink 50, and the first abutting top portion 621 of the front side plate 62 is pressed against the outer surface of the connecting wall 523. The second abutting top 622 and the elastic piece 625 are pressed against the outer surface of the portion where the first heat absorbing plate 21 is exposed between the two pressing walls 521. The elastic piece 625 is subjected to a large deformation by the pressing of the first heat absorbing plate 21 in the direction of the through hole 624 to generate a pressing force against the first heat absorbing plate 21 to enhance the clamping strength of the holding member 60, thereby further The additional card 10, the first and second heat absorbing plates 21, 22, the two jigs 30 and the heat sink 50 are tightly sandwiched between the front and rear side plates 62, 63 of the holding member 60.

Then, when the add-on card 10 equipped with the heat sink combination is inserted into the computer, the bottom end 12 of the add-on card 10 is aligned with the slot on the main board, and the top plate 61 of the holding member 60 is pressed downward. During this process, the top end 11 of the add-on card 10 abuts against the pressing portion 51 of the heat sink 50, and the heat sink 50 receives a large clamping force of the holding member 60 without misalignment, thereby ensuring the heat dissipation. The heat dissipation performance of the combination.

In summary, the present invention conforms to the requirements of the invention patent, and proposes a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

10‧‧‧Addition card

11‧‧‧Top

12‧‧‧ bottom

13‧‧‧Electronic components

21‧‧‧First heat absorbing plate

212‧‧‧Card Department

22‧‧‧second heat absorbing plate

221‧‧‧ hook

30‧‧‧Clamp

31‧‧‧Ontology

32‧‧‧Connecting Department

33‧‧‧ square slot

50‧‧‧ radiator

51‧‧‧ Pressing Department

52‧‧‧First heat sink

521‧‧‧ Pressing the wall

522‧‧‧ bottom

523‧‧‧Connecting wall

524‧‧‧Top

53‧‧‧second heat sink

54‧‧‧stops

61‧‧‧ top board

62‧‧‧ front side panel

624‧‧‧Perforation

63‧‧‧ rear side panel

Claims (8)

A heat sink assembly for dissipating heat from an electronic component on an add-on card, comprising a heat sink having an elongated pressing portion and first and second heat dissipating plates extending downward from opposite sides of the pressing portion The additional card is sandwiched between the first and second heat dissipation plates, and the improvement thereof comprises: a fastening member for clamping the additional card and the heat sink, the fastening component comprising a span a top plate disposed on the pressing portion and front and rear side plates respectively extending downward from opposite sides of the top plate, wherein the additional card and the first and second heat dissipation plates are sandwiched between the front and rear side plates of the fastening member, The front side plate extends toward the rear side plate to form a spring piece. The front side plate includes a first abutting top portion extending obliquely from a top end of the front plate to the rear side plate and a direction extending from the first bottom end to the rear side plate. a second abutting top, the slope of the second abutting top is greater than the slope of the first abutting top, and the front side plate is provided with a perforation at the intersection of the first abutting top and the second abutting top, and the elastic piece is disposed on the through hole Where it is. The heat sink assembly of claim 1, wherein the elastic piece is deformed and received in the perforation when pressed in the direction of the perforation. The heat sink assembly of claim 1, wherein the heat sink further comprises two stops extending perpendicularly from opposite ends of the second heat sink to a direction of the first heat sink, the two stops Can be blocked at the opposite ends of the add-on card, respectively. The heat sink assembly according to any one of claims 1 to 3, wherein the first heat dissipation plate includes two ridges extending obliquely from a top end thereof connected to the pressing portion toward a direction of the second heat dissipation plate. Pressing wall and connecting to the top of the pressing wall A connecting wall between the ends. The heat sink assembly of claim 4, wherein the fastening member is disposed at a position where the connecting wall of the heat sink is located, and the elastic piece protrudes below the connecting wall. The heat sink assembly of claim 4, further comprising first and second heat absorbing plates respectively attached to opposite sides of the additional card, the additional card and the first and second heat absorbing plates being sandwiched The minimum distance between each of the abutting wall and the second heat dissipating plate is smaller than the thickness of the additional card and the first and second heat absorbing plates. The heat sink assembly of claim 6, wherein the top plate of the fastening member abuts against the pressing portion of the heat sink, the rear side plate is attached to the outer surface of the second heat dissipation plate, and the lower end of the front side plate Partly abutting the outer surface of the first heat absorbing plate exposed to the portion between the two pressing walls. The heat sink assembly of claim 6, wherein the opposite ends of the second heat absorbing plate extend with two hooks, and opposite ends of the first heat absorbing plate protrude outwardly corresponding to the hooks. Second card department.