CN2681332Y - Radiator fixing device - Google Patents

Abstract

The utility model provides a radiator fixing device which is used for fixing a radiator on a circuit board, comprising a fastener and a backboard. The fastener is provided with an elastic pressing part which is able to press on the radiator and a buckled arm which is movably connected with the pressing part and extended and arranged downwards. The lower part of the buckled arm is provided with a barb. The backboard is arranged in the lower part of the circuit board. The backboard is provided with a board body. A plurality of clip rings formed by bending metallic fiber materials are installed on the board body. The clip rings are extended out by penetrating the circuit board upwards in order to make the barb of the lower part of the buckled arm of the fastener be hooked and buckled.

Description

Fixer for heat radiator

[technical field]

The utility model is about a kind of fixture, is meant a kind of fixture that is used to fasten radiator especially.

[background technology]

Along with vigorously developing rapidly of electronic industry, integrated circuit technique is constantly progressive, computer is widely used in every field, follow improving constantly of application demand simultaneously, computer run speed is more and more faster, and the speed of computer run speed depends on its core parts---central processing unit to a great extent, therefore, the running frequency of central processing unit is more and more higher, and the high-frequency high-speed processor is constantly released.But the processor speed of service is fast more, then the heat that produces in its unit interval is then many more, accumulation of heat will cause that temperature raises, thereby cause the performance of its operation to comprise stability decreases, therefore, must be in time the heat of its generation be distributed, at present, the problem of essential solution when releasing that heat radiation has become each for high speed processor.

For distributing the heat that heat-generating electronic elements such as central processing unit produce timely and effectively, all need auxiliary its heat radiation of one radiator be installed at electronical elements surface, and for radiator and electronic component are closely contacted to reduce the interface thermal resistance, need to use a buckling device that radiator is fixed on the circuit board and press electronic component, along with central processing unit is brought in constant renewal in the replacement, also constantly needing more high efficiency radiator dispels the heat to it, therefore, the radiator of new structure emerges in an endless stream, because the heat dispersion of radiator is relevant with its size and unit volume area of dissipation, therefore, the design of various heat spreader structures is widely used, heat sink size is also increasing, because connector (being used for installing the socket socket of central processing unit on the mainboard) size constancy, can't utilize previous fastener to be mated and fixed heat sink, a structure that can match with fastener must be provided on circuit board.

More common method is directly to offer hole on circuit board, and fastener passes hole and back-off circuit board lower surface, and second this method fastens first insecure, the easy escape of fastener causes the corrupted of circuit board, easily especially when dismounting; Directly welding shackle is arranged in addition on circuit board, fastener directly with shackle hook and radiator is fixed mutually, this mode directly increases structure on circuit board, be difficult to find on circuit board be fit to the attachment that clasp welds; And because heat sink size is increasing, for radiator is contacted with central processing unit closely, the thrust that fastener is applied on the radiator is also increasing, because fastener is direct and the effect of circuit board generation power (comprising the above-mentioned mode that shackle is established in weldering on circuit board), very easily causes the corrupted and the distortion of circuit board.Therefore, the more use back board structure of dealer, promptly pad is established a backboard below circuit board, and backboard is provided with and passes circuit board and for the structure that fastener cooperates, and so both can avoid fastener and circuit board that the effect of power directly takes place, intensity that also can the accentuator plate.

Existing back board structure as shown in Figure 1, it has a rectangle plate body 100, this plate body respectively extends upward a projection 120 for 100 4 jiaos, projection 120 ends are provided with screw 121, this projection 120 is upward through circuit board 200, and some screws 400 pass radiator 300 pedestals 320 screw locks in the screw 121 of projection 120 and radiator 300 is fixed on the circuit board 200, and contact with heat-generating electronic elements 220.The operation of use screw 400 fixed heat sink 300 very inconvenience is well-known, and be difficult to guarantee radiator 300 stress equalizations, influence the transmission of electronic component 220 to radiator 300 heats, in addition, this backboard only can cooperate with screw 400, and versatility is poor, projection 120 is installed normally with welding manner or screw-in version on plate body 100, and need processing screw hole 121 on projection 120, the manufacture process trouble.

[summary of the invention]

The purpose of this utility model is to provide a kind of fixture, is meant a kind of being used for fastener of radiator on circuit board and the fixer for heat radiator that contacts with heat-generating electronic elements especially.

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

The utility model fixer for heat radiator comprises a fastener and a backboard, and this fastener has the elasticity press part that can be pressed on the radiator and flexibly connects with this press part and stretch the button arm of establishing downwards, and button arm lower end is provided with barb; This backboard pad is located at circuit board below, and it has a plate body, and the clasp that several are formed by the metal wire rod bending is installed on the plate body, and these clasps are upward through circuit board and stretch out and buckle arm lower end barb hook for above-mentioned fastener.

The utility model fixer for heat radiator dorsulum is simple in structure, easy to manufacture, utilize elastic fastener that radiator is installed, it is low to overcome the screw locking operability, is difficult to guarantee the problem of application of force equilibrium, and the structure of backboard is fit to can cooperate highly versatile with the elastic fastener of its hook with any.

[description of drawings]

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

Fig. 1 is each element three-dimensional exploded view of an existing radiator fixed form.

Fig. 2 is the three-dimensional exploded view of the utility model fixer for heat radiator and related elements.

Fig. 3 is the back board part three-dimensional exploded view of the utility model fixer for heat radiator.

Fig. 4 is the part three-dimensional exploded view of another angle of backboard of the utility model fixer for heat radiator.

Fig. 5 is the assembly drawing of the utility model fixer for heat radiator and related elements.

[embodiment]

See also Fig. 2, the utility model fixer for heat radiator closely contacts with auxiliary its heat radiation itself and central processing unit 40 heat-generating electronic elements such as grade in order to radiator 20 is fixed on the circuit board 30.This fixer for heat radiator comprises a fastener 10 and a backboard 50.

This radiator 20 has a metal base 22 and is located at several dissipation fins 24 on the pedestal 22, the two ends of two ㄈ shape heat pipes 26 are passed pedestal 22 and radiating fin 24 respectively, radiating fin 24 top edges of this radiator 20 rely on both sides and all have a rectangular slits 24, the promptly common platform 25 that can supply fastener 10 pressures to establish that forms of the horizontal edge portion of each radiating fin 24 otch.

This fastener 10 compresses bar 12 by two mutual parallel horizontal resiliency and two upright ㄇ shape button arms 14 are formed.This two compresses bar 12 and two button arms 14 process by the metal lamellar body, and wherein compressing bar 12, to be the recessed arc in middle part shaft-like and have elasticity; This ㄇ shape button arm 14 has the downward button pin 144 that extends of a horizontal connecting portion 142 and this connecting portion 142 two ends, each button pin 144 end is provided with barb 145, horizontal part 142 top edges extend a pulling part 146 to the direction bending opposite with button pin 144 end barbs 145, above-mentioned connecting portion 142 is hung on two near the vertical activity in position at two ends and compresses an end of bar 12 and can compress bar 12 relatively and do suitable swing, when two button arms 14 are connected two when compressing on the bar 12, the barb 145 of its button pin 144 ends inwardly and pulling part 146 outwardly.This two compresses bar 142 and can be pressed on the platform 25 of both sides, radiator 20 top, and button pin 144 can with backboard 50 hook mutually.

See also Fig. 3 and Fig. 4, this backboard 50 is made up of roughly rectangular plate body 52 and several hook spares 54, these rectangle plate body 52 middle parts are provided with an opening 522, to alleviate plate body 52 weight, 52 4 jiaos of plate bodys are all along the rectangle diagonal ear 523 that stretches out, thereby make this plate body 52 slightly be cross, above-mentioned each ear 523 is provided with first a long and narrow through hole 524 that is parallel to plate body 52 1 opposite side, first through hole 524 in four ears 523 is parallel mutually, rely on first through hole, 524 two ends in each ear 523 and be positioned at same linear position with first through hole 524 and respectively offer one second through hole 526, corresponding first through hole 524 of these plate body 52 lower surfaces and second through hole, 526 place linear positions form a groove 528.This hook spare 54 is to be formed by the bending of metal wire rod one, has a upright ㄇ shape button portion 542, these button portion 542 transverse widths (promptly the distance in the outside is divided in button portion 542 2 vertical portions) are wide with plate body 52 first through holes 524, this button portion each level of 542 two ends horizontal part 544 that stretches out, 526 distances of these horizontal part 544 length and first through hole 524 and second through hole equate, each horizontal part 544 end continues to extend upward formation one embedding hook 546, above-mentioned button portion 542 and horizontal part 544 and embedding hook 546 are positioned at same plane, first through hole 524 of plate body 52 from bottom to top passes in the button portion 542 of this hook spare 54, and embedding hook 546 embeds in plate body 52 second through holes 526 in the mode of interference fit, 544 of horizontal parts are arranged in the groove 528 of plate body 52 lower surfaces just, so, hook spare 54 and plate body 52 fastening combinations, and in plate body 50 4 ears 523, respectively form a clasp.

See also Fig. 2 and Fig. 5, when radiator 20 is installed, backboard 50 pads are put below circuit board 30, clasp in its four jiaos of ears 523 is upward through circuit board 30 (being pre-formed perforation on the circuit board 30) and stretches out, radiator 20 is sticked on central processing unit 40, pedestal 22 bottom surfaces contact with central processing unit 40, fastener 10 is crossed on the radiator 20, it two compresses bar 12 and is pressed on the platform 25 of both sides, radiator 20 top, the pulling part 146 of pulling wherein a button arm 14 makes the above-mentioned clasp of barb 145 hooks of two button pin, 144 ends, control the clasp that another is detained the pulling part 146 of arm 14 and presses down this side correspondence of barb 145 hooks that makes its two buttons pin, 144 ends, produce the downward power that compresses owing to compress the strain of bar 12 self, with radiator 20 fastening being pressed on central authorities' reason device 40.

Claims (8)

1. fixer for heat radiator, in order to radiator is fixed on the circuit board, it comprises a fastener and a backboard, this fastener has the elasticity press part that can compress radiator and is connected with this press part also stretches the button arm of establishing downwards, detains the arm lower end and is provided with barb; Above-mentioned backboard is positioned at the circuit board below, and it has a plate body, it is characterized in that: the clasp that several are bent to form by metal wire rod is installed on the plate body, and these clasps are upward through circuit board and stretch out, for the button arm lower end barb hook of above-mentioned fastener.

2. fixer for heat radiator according to claim 1 is characterized in that: described plate body middle part has an opening.

3. fixer for heat radiator according to claim 1 is characterized in that: described plate body at least two is outward extended with ear along its centrosymmetric position.

4. fixer for heat radiator according to claim 1 is characterized in that: described plate body at least two is provided with the first long and narrow through hole along its centrosymmetric position.

5. fixer for heat radiator according to claim 3 is characterized in that: be formed with the first long and narrow through hole in the described ear.

6. according to claim 4 or 5 described fixer for heat radiator, it is characterized in that: be positioned at same linear position near the first through hole two ends with first through hole and have second through hole.

7. fixer for heat radiator according to claim 6 is characterized in that: described clasp is to form by being installed on the plate body after the metal wire rod bending.

8. fixer for heat radiator according to claim 7, it is characterized in that: described hook spare has a ㄇ shape button portion, this button portion end level respectively stretches out after the segment length more upwards bending and forms an embedding hook, and button portion stretches out in first through hole and forms a clasp thereby the embedding hook is embedded in second through hole of plate body.

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