CN2364421Y

CN2364421Y - Heat sink

Info

Publication number: CN2364421Y
Application number: CN 99235483
Authority: CN
Inventors: 李顺荣; 李学坤
Original assignee: Fuzhun Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Fuzhun Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 1999-02-27
Filing date: 1999-02-27
Publication date: 2000-02-16
Anticipated expiration: 2009-02-27

Abstract

The utility model relates to a radiating device. The utility model comprises a radiating body and a fastener; the radiating body is provided with a base, radiating fins which are upwards extended from the base and a boss, and the boss arranged in the center of the radiating body is basically square; the fastener is made of transparent engineering plastic material which belongs to the class of polycarbonate, and the fastener comprises a positioning section, two free sections and two fastening sections; the positioning section is square and the size and area of the positioning section is equal to those of the boss; the middle parts of the four sides of the positioning section are respectively and downwards extended to form an interference section, the opposite angles of the positioning section are symmetrically and upwards inclined and extended and then horizontally extended to form the two free sections, and the cylindrical fastening sections are formed by downwards extending the adjacent parts of the ends of the free sections.

Description

Heat abstractor

The utility model is to provide a kind of heat abstractor, especially refers to a kind of heat abstractor of the radiator that has the buckling piece of plastic material global formation and match with it.

More and more wide along with the fast-developing of IT industry and its range of application, requirement to computer internal electronic element processing speed is also more and more higher, be accompanied by the raising of the speed of service, the heat that associated electronic components produces also rolls up, if untimely discharges this heat, stability during use and quality will be greatly affected.

Be commonly used to assist electronic component to discharge the relevant radiator of heat and the structure of its buckling piece, can be with reference to United States Patent (USP) the 5th, 730, No. 210 etc., as shown in Figure 1, this radiator 4 is through cutting with aluminium extruded type 2, operations such as profile groove, form intermediate 3, opposite side carries out the clout that associative operation such as punching press is removed edges more afterwards, obtain through hole 5 and predetermined size shape, handle and make final structure, this radiator 4 is by passing the bolt 6 of radiator 4 through holes 5 and circuit board perforation 8, and be located under the acting in conjunction of hooking sheet 7 and spring 9 on the bolt 6, be fixed on the circuit board.Because this class radiator 4 is in process of production, must stay considerable material in the edge earlier and be used for being processed into final structure, thereby cause the serious waste of material, and the tediously long complexity of whole manufacture process, all very unfavorable to production efficiency and cost.

Another kind of radiator and its buckling piece structure can be with reference to No. the 85217973, Taiwan patent, as shown in Figure 2, this radiator 11 is through obtaining after cutting by aluminium extruded type, and buckling piece is mainly one and the corresponding rectangular frame 13 of radiator 11 profiles, this rectangular frame 13 is made for metal material, be provided with the kink 15 of downward bending at its diagonal angle, end at kink 15 further is formed with bent tabs 14 again, this circuit board is provided with connecting hole 17 on the position corresponding with bent tabs 14, radiator 11 can pass through the snap action of centering on of rectangular frame 13 and bent tabs 14 and connecting hole 17, reaches the purpose that is stably fixed on the circuit board.Can simplify manufacturing process though adopt this class radiator 11, but in the use, because rectangular frame 13 is because whole stressed inequality, easily buckling deformation, do not compress radiator 11 at the diagonal angle of not establishing kink 15, what therefore radiator 11 can't be stable is fixed on the circuit board, cause radiating effect bad, simultaneously, this rectangular frame 13 is to be obtained through a series of relevant manufacture processes by metal material, production process is loaded down with trivial details, and also will become waste material at the material of rectangular frame 13 inside, all exists great disappearance on production efficiency and cost consideration.

Therefore, need a kind of radiator and its buckling piece to improve the problem that the front is told about really.

The purpose of this utility model is to provide a kind of heat abstractor, and its buckling piece is by the whole extrusion molding of plastic material, can enhance productivity and reduce cost.

Another purpose of the present utility model is to provide a kind of heat abstractor, by its design of buckling piece, stable being fixed on the circuit board and with electronic component of radiator can be fitted closely.

Another purpose of the present utility model is to provide a kind of heat abstractor, and the design of its radiator can be saved cost and be enhanced productivity.

The purpose of this utility model is achieved like this, that is: provide a kind of heat abstractor, it includes radiator and buckling piece, and this radiator has pedestal and from a upwardly extending radiating fin of pedestal and a boss, this boss is positioned at the radiator middle section and is square substantially; Buckling piece is to be formed by polycarbonate-based transparent engineering plastic material monolithic manufacturing, it is provided with location division, two free sections and two buckling parts, the location division roughly is square and dimensioned area approximates the area of radiator boss, in the middle of square four limits, extend an interference part respectively downwards, this two free section is after upwards symmetry tilts to extend a segment distance by the diagonal angle, location division, horizontal-extending forms again, this buckling parts then forms by extending downwards near the end of free section, and is cylindric substantially.

Prior art relatively, the utlity model has easy to manufacture, the reliable advantage of easy to assembly and fixed effect, it can also reduce manufacturing cost greatly simultaneously, enhances productivity.

The accompanying drawing simple declaration:

Fig. 1 is the three-dimensional exploded view of normally used heat abstractor manufacture process and user mode.

Fig. 2 is another kind of normally used heat abstractor three-dimensional exploded view.

Fig. 3 is the utility model heat abstractor three-dimensional exploded view.

Fig. 4 is the side view of the utility model heat abstractor buckling piece.

Fig. 5 is the three-dimensional combination figure of the utility model heat abstractor.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing:

Please together with reference to figure 3,4,5, the utility model heat abstractor 1 comprises a radiator 20 and a buckling piece 30, wherein, radiator 20 has radiating fin 22, boss 24 and pedestal 26, this radiating fin 22 and boss 24 are extended upward by pedestal 26 and form, and the middle section that this boss 24 is positioned at radiator 20 roughly is square, and radiating fin 22 then is symmetrically distributed in around the boss 24, to be used for increasing the area of dissipation of radiator 20 integral body.Because this radiator 20 is cut by the aluminium extruded type process and profile groove can obtain later on, and does not almost have waste material to produce, therefore can increase substantially production efficiency and reduce manufacturing cost.

Buckling piece 30 comprises a location division 32, two free sections 34 and two buckling parts 36, this location division 32 is square substantially, and dimensioned area is substantially equal to the area of radiator 20 boss 24, centre on square four limits is extended an interference part 33 respectively downwards, the thickness of this interference part 33 is for cooperating the width of boss 24 and 22 grooves of radiating fin, provide the interference positioning function when installing, prevent that buckling piece 30 from deviating from from radiator 20.This free section 34 is after upwards symmetry tilts to extend a segment distance earlier by 32 liang of diagonal angles, square location division, horizontal-extending and forming again, this buckling parts 36 is to form by extending downwards near the end of free section 34, and be cylindric substantially, end at buckling parts 36 is formed with grab 38, this grab 38 is made of two identical protuberances 42 and the gap 44 that is positioned at 42 of protuberances, be used for inserting the perforation 52 on the circuit board 50 at electronic component 51 places, and reach the purpose that is retained on the circuit board 50 and fits tightly with electronic component 51 that radiator 20 is stable.

Buckling piece 30 is to be made by whole ejaculation of the plastic material of Merlon (PC) class, can increase substantially production efficiency and reduce manufacturing cost, and Merlon is a kind of engineering plastic material with excellent mechanical properties, good processability, be fit to ejection formation, it also has good dimensional stability simultaneously, and the temperature about 120 ℃ is used for a long time, satisfies relevant operating temperature demand fully.In addition, Merlon is with the good transparency, and light transmittance can reach about 89%, can inspect the existence whether buckling piece 3 has defectives such as stress concentration, bubble or crazing in process of production by means of its good light transmittance.

Claims

1, a kind of heat abstractor, be used to provide the heat radiation of electronic component, this electronic element storing is on a circuit board, on the appropriate location of circuit board, offer several holes, this heat abstractor comprises a radiator and a buckling piece, and it is characterised in that: this radiator has the radiating fin that a pedestal that is square substantially and several extend upward and arrange with ad hoc fashion from pedestal; This buckling piece is made through injection moulding by plastic material, it comprises a location division, two free sections and two holding sections, this location division is resisted against the top of radiating fin, this two free section is extended upward with specific angle and mode by the appropriate location, location division, the holding section is then extended downwards by the ad-hoc location of free section, further is formed with the grab that is used for engaging the hole on the circuit board in the appropriate location of holding section.

2, heat abstractor as claimed in claim 1 is characterized in that: this buckling piece is to be made by transparent engineering plastic.

3, heat abstractor as claimed in claim 2 is characterized in that: this transparent engineering plastic is Merlon (PC).

4, heat abstractor as claimed in claim 1 is characterized in that: these several radiating fins form a boss that is positioned at the radiator middle section and is square substantially when deploying.

5, heat abstractor as claimed in claim 4 is characterized in that: the location division of this buckling piece is square substantially, and dimensioned area is corresponding with boss.

6, heat abstractor as claimed in claim 5 is characterized in that: four limits, square location division of this buckling piece, extend an interference part to radiator respectively.

7, heat abstractor as claimed in claim 1 is characterized in that: two free sections of this buckling piece are after earlier upwards symmetry tilts to extend a segment distance from location division two relative angles, again horizontal-extending and forming.

8, heat abstractor as claimed in claim 1 is characterized in that: the holding section of this buckling piece is near the extension downwards end of free section, and is cylindric substantially.

9, heat abstractor as claimed in claim 8 is characterized in that: this grab is positioned at the holding section end, and it comprises two identical protuberances and is positioned at gap between protuberance.

10, heat abstractor as claimed in claim 1 is characterized in that: at least one interference part is further extended to radiator at ad-hoc location in this location division, is used for the radiating fin of interference engagement radiator.