CN2664182Y

CN2664182Y - Heat sink

Info

Publication number: CN2664182Y
Application number: CN 200320117583
Authority: CN
Inventors: 李学坤; 鲁翠军; 孙明贤
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2003-10-27
Filing date: 2003-10-27
Publication date: 2004-12-15
Anticipated expiration: 2013-10-27

Abstract

The utility model relates to a radiation device for radiating heat produced by an electronic element on a circuit board. The radiation device comprises a radiation element, a fixing element and a matching element, wherein the radiation element comprises a cylinder and a radiation body mounted on the cylinder, and the radiation body comprises a plurality of radiating fins extended outwards in a radial shape. Part of the cylinder extends out of the radiation body, and the fixing element is sheathed on the periphery surface extending out of the radiation body through a through hole arranged the fixing element. The matching element is combined with the cylinder extending out of the radiation body to make the fixing element clamped between the radiation body and the matching element.

Description

Heat abstractor

[technical field]

The utility model is about a kind of heat abstractor, is meant a kind of heat abstractor that is used for distributing heat that central processing unit produces especially.

[background technology]

Electronic component such as integrated circuit, central processing unit all will produce a large amount of heat in normal running, if the heat of untimely its generation of eliminating will cause accumulation of heat to cause that temperature raises, and have a strong impact on the normal operation of electronic component.For this reason, industry is usually at these heat-generating electronic elements mounted on surface one heat abstractors, with auxiliary its heat radiation.Usually, this heat abstractor is to be fitted on the heat-generating electronic elements by the fastener fastening.

As shown in Figure 1, it is an existing heat abstractor, this heat abstractor comprises a fan 1, one radiator 2 and a heating column 3, wherein this fan 1 is installed on the radiator 2 by a retaining element 4, this radiator 2 is converted into wavy by a thin type sheet material Curved Continuous and surrounds one cylinder-shaped, the middle part has an opening 5 that supplies heating column 3 to wear, this heating column 3 is provided with an annular projection 6 near the place, bottom along outer peripheral face, after one sheet fastener 7 down is set in these heating column 3 outer peripheral faces from these heating column 3 tops, radiator 2 being set on the heating column 3 and by modes such as welding is combined into one heating column 3 and radiator 2 again, by fastener 7 against the annular projection 6 of this heating column 3 and be buckled on the projection 9 of connector 8, heat abstractor is fastened on distribute heat on the heat-generating electronic elements 10; Yet, the form of the heating column 3 of this heat abstractor and radiator 2 for separating, before being combined as a whole in modes such as welding, this fastener 7 must be set on this heating column 3 in advance, lacks to assemble flexibility and the operation of follow-up welding sequence is brought inconvenience; In addition, in the process that fastens, for making fastener 7 and protruding 9 buckles, must fastener 7 be pressed with bigger strength sincere on electronic component 10, therefore, if careless manipulation is so that the application of force injures precision and fragile central processing unit when excessive easily; Also have, this heat abstractor is only realized fastening by single sheet fastener, lacks the assembling steadiness, rocks etc. as easily producing under external force, and especially when the volume of heat abstractor greatly the time, it is more outstanding that this problem seems.

[summary of the invention]

Main purpose of the present utility model is to provide the heat abstractor that a kind of assembly operation is convenient, be easy to secure.

The purpose of this utility model realizes by following technical proposal:

The utility model heat abstractor, be used for distributing the heat that electronic component produced on the circuit board, comprise a heat sink, a fixture and a counterpart, this heat sink comprises a cylinder and a radiator that is arranged on this cylinder, this radiator is made up of some fin that outwards extend radially, and the part cylinder protrudes out outside this radiator, this fixture is set on the outer peripheral face that protrudes out the outer cylinder of radiator by the perforation of offering on it, this counterpart cylinder outer with protruding out radiator combines, and above-mentioned fixing piece is folded between radiator and counterpart; Wherein this radiator and cylinder can one-body moldedly be made, and also cylinder can be located in mode be combined intos such as also passing through welding on this radiator, and this heat abstractor can pass fixture by some screws and realize fixing.

If the radiator of the utility model heat abstractor and cylinder are one-body molded making, then can save operational sequences such as welding with both combinations, if adopt the form that is separation, then can before the sheathed cylinder of fixture, cylinder be combined with radiator, for welding operation brings convenience in modes such as welding; In addition, realize that by some screws the mode of fixing can realize more firm fastening and avoid electronic component to be damaged.

The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

[description of drawings]

Fig. 1 is the isometric exploded view of heat abstractor in the prior art.

Fig. 2 is the isometric exploded view of the utility model heat abstractor and related elements.

Fig. 3 is the three-dimensional assembled view of the utility model heat abstractor and related elements.

[embodiment]

Please refer to Fig. 2 and Fig. 3, the utility model heat abstractor 30 is used for being installed on the circuit board 40, and closely contacts to distribute the heat that it is produced with central processing unit 50, mainly comprises a heat sink 31, a fixture 33 and a counterpart 34; Wherein a fan 10 can be installed on the heat sink 31 by two fan Fixtures 20, this fan 10 structure that roughly is square, and its four corner all has a pilot hole 12; Each fan Fixture 20 is roughly semicircular arc, and pilot hole 12 of corresponding said fans 10 is provided with installing hole 22 on it, and bending inwards at its feather edge is provided with flanging 24.

This heat sink 31 comprises a radiator 311 and a cylinder 312, this radiator 311 is made up of some fin 313 that outwards extend radially, each fin 313 is the arc along circumferential skewing, be provided with flanging in inward flange, each fin 313 is welded to each other together and forms a hollow channel 314 by this flanging; Each fin 313 offer a breach 315 near the top position, the conduit that each breach 315 corresponding flangings 24 that form air feeds fan fixed mounts 20 are embedded mutually can be installed in fan 10 on the radiator 311 by this.

The outer peripheral face of this cylinder 312 in the bottom is provided with external screw thread, this cylinder 312 can up be located in from the bottom of radiator 311 passage 314 of above-mentioned radiator 311 and be combined as a whole by welding or mode such as gluing with this radiator 311, the external thread section of this cylinder 312 and protrude out outside the radiator 311 near the part of this external thread section; The tabular of this fixture 33 for being square, the corresponding cylinder 312 in heart place is provided with a perforation 37 therein, and this fixture 33 can be bored a hole by this and 37 is set on from the bottom up on the outer peripheral face that protrudes out the outer cylinder 312 of this radiator 311; In addition, also be provided with four air-guiding holes 35, make the air-flow that blows from fan 10 to see through these air-guiding holes 35 and brush, also be provided with an assembly hole 36 respectively at four jiaos of places of this fixture 33 at central processing unit 50 peripheries around the perforation 37 of this fixture 33.

This counterpart 34 is arranged on fixture 33 belows, be stepped ring edge shape, which is provided with a boss 38, the external diameter of this boss 38 is big than perforation 37 diameters of fixture 33, these counterpart 34 inner peripheral surfaces are provided with internal thread, it can reach threaded engagement with the external screw thread of cylinder 312, certainly, this counterpart 34 can be realized as welding by the mode beyond the screw thread with combining also of cylinder 312, thereby make fixture 33 be folded in radiator 311 and 34 of this counterparts and be resisted against on the boss 38 of this counterpart 34, and the lower surface of cylinder 312 is stretched out to contact with central processing unit 50.In the utility model, cylinder 312 adopts the form of separating with counterpart 34, makes and can in advance cylinder 312 be combined with radiator 311 in modes such as welding that owing to there is not the obstruction of fixture 33, the operation of welding is comparatively convenient.

Certainly, radiator 311 and cylinder 312 also can method is one-body molded to be made by directly extruding etc., like this then saved operational sequences such as welding with both combinations, and after moulding, on the cylinder 312 outside protruding out radiator 311 external screw thread is set, because all the other principles are identical with above-mentioned execution mode, do not give unnecessary details at this.

In addition, the assembly hole 36 of corresponding fixture 33 is provided with through hole 42 on the circuit board 40, below circuit board 40, also be provided with a backboard 60, this backboard 60 is square, and is respectively equipped with a projection 62 on four angles, and these projections 62 are provided with internal thread and are provided with an annular groove 64 in the interlude position, after making that the projection 62 of backboard 60 passes its through hole 42 from circuit board 40 belows, one snap ring 66 can be set in the middle of this annular groove 64, to realize the pre-assembling of backboard 60, makes it be unlikely to come off from circuit board 40; Some affixed elements 70 can pass the assembly hole 36 of fixture 33 and screw lock on backboard 60 projections 62 that are assembled to circuit board 40 in advance as screw etc., thereby heat abstractor 30 closely is sticked on central processing unit 50 with distribute heat, in the utility model, heat abstractor 30 is located in central processing unit 50 mode all around by four screws and fixes, and makes that fastening is firm and can avoid central processing unit 50 to be damaged.

Claims

1. a heat abstractor comprises a heat sink, and this heat sink comprises a cylinder and a radiator that is arranged on this cylinder, and this radiator is made up of some fin that outwards extend radially, and the part cylinder protrudes out outside this radiator; It is characterized in that: this heat abstractor also comprises a fixture and a counterpart, this fixture is set on the outer peripheral face that protrudes out the outer cylinder of radiator by the perforation of offering on it, this counterpart cylinder outer with protruding out radiator combines, and above-mentioned fixing piece is located between radiator and counterpart.

2. heat abstractor as claimed in claim 1 is characterized in that: this radiator and cylinder are formed in one and make.

3. heat abstractor as claimed in claim 1 is characterized in that: this radiator and cylinder are for being unpack format, and the fin of this radiator surrounds a passage jointly, and this cylinder is located in this passage and with this radiator and combines.

4. heat abstractor as claimed in claim 1 is characterized in that: also be equiped with a fan on this radiator.

5. heat abstractor as claimed in claim 1 is characterized in that: the ring edge shape that this counterpart is stepped, which is provided with a boss, and this fixture is resisted against on the boss on this counterpart.

6. heat abstractor as claimed in claim 1 is characterized in that: this cylinder and counterpart are provided with the screw thread that cooperatively interacts.

7. heat abstractor as claimed in claim 1 is characterized in that: this fixture is a tabular, is provided with some air-guiding holes around its perforation.

8. heat abstractor as claimed in claim 7 is characterized in that: also be provided with some affixed elements, these affixed elements can pass fixture and circuit board from top to bottom, and combine so that heat abstractor is fixed with a backboard that is positioned at the circuit board below.

9. heat abstractor as claimed in claim 8 is characterized in that: these affixed elements are some screws.