CN101203119B

CN101203119B - Heat radiating device

Info

Publication number: CN101203119B
Application number: CN 200610157540
Authority: CN
Inventors: 杨波勇; 周志勇; 赖振田
Original assignee: Hong Jun Precision Industry Co ltd; Fuzhun Precision Industry Shenzhen Co Ltd
Current assignee: Hong Jun Precision Industry Co ltd; Fuzhun Precision Industry Shenzhen Co Ltd
Priority date: 2006-12-15
Filing date: 2006-12-15
Publication date: 2010-08-25
Anticipated expiration: 2026-12-15
Also published as: CN101203119A

Abstract

A heat dissipating device is used for dissipating the heat in a heating electronic component on a circuit board, and comprises a radiator and a cargo lash; wherein, the radiator comprises a substrate and a plurality of heat dissipating rectangular fins which are formed on the substrate; a channel is formed between adjacent rectangular fins; the cargo lash comprises a body which is contained in the channel and two fastening feet which are connected with the two ends of the body and are clamped with the circuit board; a heat dissipating rectangular fin at one side of the channel of the cargo lash forms two salient points at the place near the two ends of the channel ports to interfere and match the cargo lash so as to prevent the radiator from gilding correspondingly to the cargo lash alongthe direction of the channel. The salient points formed by stamping a heat dissipating rectangular fin at one side of the channel of the cargo lash can interfere and match the cargo lash; when the cargo lash is assembled to the radiator, the salient points can prevent the cargo lash from being dropped off from the channel without any auxiliary means and with low cost.

Description

Heat abstractor

Technical field

The present invention relates to a kind of heat abstractor, particularly a kind of heat abstractor that is used to electronic component to dispel the heat.

Background technology

When moving, can produce a large amount of heats such as computer cpu, north bridge chips, the contour power electronic element of video card,, will directly cause temperature sharply to rise, and badly influence the normal operation of electronic component if these heats can not be left effectively.For this reason, need heat abstractor to come these electronic components are dispelled the heat, traditional heat abstractor generally includes radiator and radiator is fixed to fastener on the electronic component.

Above-mentioned heat abstractor after elder generation is attached to radiator on the electronic component end face, utilizes the hook between fastener and associated component or structure (for example hole on the circuit board) again and is tight against radiator, and radiator is closely adhered on the electronic component in use.Referring to United States Patent (USP) the 5th, 640,305 and 5,428, No. 897 etc., this two patent all discloses a fastener, wherein, this fastener is formed by metallic rod body bending, and this metallic rod body is to be positioned on the radiator by a clamping action that is fastened on the shell fragment in the radiator in addition.In this design, the arm that this metallic rod body has a horizontal pressure section and roughly oppositely vertical respectively bending is extended from these pressure section two ends, the end of each arm extends a fastener portion, by fastener portion and associated component or interstructural hook, just radiator is closely adhered on the electronic component end face; The cross section of this shell fragment is roughly V-shaped, and its bending zone clamps the pressure section of metallic rod body, and two terminal edge then are fastened on the radiating fin of radiator.But, this design commonly used needs to clamp earlier by a shell fragment in addition the pressure section of metallic rod body, and then this shell fragment and metallic rod body blocking together be positioned in the radiator, therefore operation is gone up complicated, inconvenient and is needed the described shell fragment of independent moulding, and cost is higher.

Summary of the invention

In view of this, be necessary to provide a kind of simple in structure, easy accessibility and lower-cost heat abstractor.

A kind of heat abstractor, in order to the heat-generating electronic elements on the circuit board is dispelled the heat, it comprises a radiator and a fastener, described radiator comprises a substrate and is formed at some radiating fins on the substrate, form passage between adjacent radiating fin, described fastener comprise one be contained in the body in the passage wherein and connect the body two ends and with two button pin of described circuit board buckle, one radiating fin of accommodating passage one side of fastener forms two salient points respectively in the position near the two ends, passway, described salient point punch forming on described radiating fin, thereby to prevent that with the fastener interference engagement described radiator from sliding along channel direction with respect to fastener.

The salient point that forms on one radiating fin of above-mentioned passage one side of accommodating fastener can pass in this passage process and the fastener interference engagement at fastener, and this salient point can prevent fastener slippage and to need not other aid costs lower from this passage after fastener is assembled to this radiator; And described salient point can prevent that described radiator is subjected to external force when vibrations and slides along channel direction with respect to fastener after the button pin of described fastener is snapped in circuit board.

The invention will be further described below in conjunction with the drawings and specific embodiments.

Description of drawings

Fig. 1 is the three-dimensional exploded view of heat abstractor in the first embodiment of the invention.

Fig. 2 is the assembly drawing of heat abstractor shown in Figure 1, and wherein the part radiating fin removes.

Fig. 3 is that heat abstractor shown in Figure 1 places the structural representation on the circuit board.

Fig. 4 is the assembly drawing of Fig. 3, and wherein the part radiating fin removes.

Embodiment

Fig. 1 to Fig. 2 discloses the heat abstractor 10 in the embodiment of the invention, it is used to distribute the heat of electronic component (figure does not show) release that is installed on the circuit board 20 (referring to Fig. 3 and Fig. 4), and this heat abstractor 10 comprises that a radiator 12 and is used for radiator 12 is fixed to the linear fastener 14 of fitting with electronic component on the circuit board 20.

Radiator 12 comprises a substrate 120 and the radiating fin 124 that is arranged side by side in substrate 120 tops.Substrate 10 is used to absorb the heat that electronic component produces, and heat is conducted to radiating fin 124.These radiating fins 124 are used to distribute the heat that substrate 120 conduction absorb.These radiating fins 124 are mutually evenly at interval to form some passages 126.Each radiating fin 124 thereon, the lower end edge is formed with flanging 1240 respectively, form a hole (figure is mark not) on this flanging 1240, these flanging 1240 terminal horizontal extend a spacer 1241 with adjacent radiating fin 124 flangings 1240 on the hole fasten, fastener 14 is cross-placed in the passage 126 of radiating fin 124, so, thus adjacent two radiating fins 124 in the top and the mutual buckle in bottom prevent that fastener 14 from skidding off from the top of radiating fin 124 passages 126.

Radiating fin 124 comprises a radiating fin 125, forms disymmetrical salient point 1250 on this radiating fin 125, and these two salient points, 1250 punch formings are on this radiating fin 125 and be positioned at these radiating fin 125 2 opposite ends near 126 mouthfuls of places of passage.The radiating fin 125 of this band salient point 1250 is positioned at these radiating fin 124 central position.

Fastener 14 can be one-body molded by pliable and tough and resilient material (for example, steel wire, alloy etc.), and it is cross-placed on the passage 126 between the radiating fin 124,125.This fastener 14 has a uniform external diameter, this outside dimension and two adjacent radiating fins 124, vertical range is roughly the same and big than the spacing between the relative radiating fin 124 with it of salient point 1250 between 125, thereby inserts described two adjacent radiating fins at 124,125 o'clock and salient point 1250 and adjacent radiating fin 124 interference engagement at fastener 14.Adjacent with radiating fin 125 in the present embodiment radiating fin 124 is meant the radiating fin 124 towards salient point 1250.This fastener 14 comprises the slender body 140 of striding in the passage of being located between the described adjacent radiating fin 124,125 126 and first, second button arm 141,142 that extends from body 140 2 opposite ends.The end of first, second button arm 141,142 has been bent to form

button pin

1410,1420 respectively.This body 140 is convexly curved to form a V-shaped configuration, this body 1410 has a pressure section that contacts with the flanging 1240 of radiating fin 125 (figure mark) makes radiator 12 closely contact with electronic component with the substrate 120 of downward compacting radiator 12, and from this pressure section upwardly extending two adjutages (figure marks) that tilt.Distance between this two adjutages end is greater than the distance between two salient points 1250 and be substantially equal to the length of the passage 126 between the described two adjacent radiating fins 124,125.Thereby arbitrary adjutage end of body 1410 prevents fastener 14 from the passage 126 of radiator 12 landing to the distance of the bottom flap 1240 of radiating fin 125 so that fastener 14 produces to interfere with salient point 1250 and adjacent radiating fin 124 when passing passage 126 greater than the salient point 1250 of radiating fin 125 to the vertical range between the pressure section.This first button arm 141 extends setting downwards from an end of body 140,142 upwards bendings again after the other end bending downwards of body 140 of the second button arm.

Above-mentioned heat abstractor 10 is when assembling, fastener 14 is inserted from a side of the passage 126 between the two adjacent radiating fins 124,125 of radiator 12, and its body 140 is striden be located in the passage 126, the first button arm 141 and the salient point 1250 of fastener 14 interfere the back and stretch out from the opposite side of passage 126, first and second button arm 141,142 lays respectively at the relative both sides of described passage 126 thus, the pressure section of the body 140 of fastener 14 presses on the bottom flap 1240 of radiating fin 125 simultaneously, promptly finishes assembling.Because 126 landings from passage of this fastener 14 need overcome the interference of fastener 14 and salient point 1250, so even this heat abstractor 10 assemblings finishing back is given a shock, this salient point 1250 also can prevent fastener 14 landing from passage 126.

As shown in Figures 3 and 4, when above-mentioned heat abstractor 10 was used in an electronic installation, the bottom surface of substrate 120 fitted in the end face of the electronic component that is installed in circuit board 20, and two side positions that are positioned at electronic component on the circuit board 20 are established a clasp 24 respectively.In the assembling process, respectively first, second button arm 141,142 is pressed down,

button pin

1410,1420 is cooperated with clasp 24 respectively, thereby the pressure section of the body 140 of fastener 14 compresses the substrate 120 of radiator 12 downwards makes radiator 12 closely be pressed together on the top of electronic component, simultaneously two salient points 1250 are resisted against respectively on two adjutages of body 140 of fastener 14, thereby radiator 12 relative fasteners 14 slide along passage 126 directions when preventing that this heat abstractor 10 in use is given a shock.

Be appreciated that ground, the slender body of above-mentioned fastener is not limited to a pressure section, after also slender body can being bent through multiple tracks, forms two or more pressure sections.

In sum, the present invention is in a radiating fin upper punch belling point wherein, and operation is simple, processing cost is low and do not need extra aid, can prevent fastener landing from the radiator; In use also can prevent radiator this fastener slip relatively; And whether this salient point can check the position of fastener to install appropriately, if to interfere the position installation that then proves fastener not improper with the radiating fin of these passage both sides when the operator inserts this fastener in radiator.

Claims

1. heat abstractor, in order to the heat-generating electronic elements on the circuit board is dispelled the heat, it comprises a radiator and a fastener, described radiator comprises a substrate and is formed at some radiating fins on the substrate, form passage between adjacent radiating fin, described fastener comprise one be contained in the body in the passage wherein and connect the body two ends and with two button pin of described circuit board buckle, it is characterized in that: a radiating fin of accommodating passage one side of fastener forms two salient points respectively in the position near the two ends, passway, described salient point punch forming on described radiating fin, thereby to prevent that with the fastener interference engagement described radiator from sliding along channel direction with respect to fastener.

2. heat abstractor as claimed in claim 1, it is characterized in that: described body is elongate, its two ends bending has extended to form first and second button arm, and described first and second button arm lays respectively at the both sides of described passage, and described two button pin connect first and second button arm end respectively.

3. heat abstractor as claimed in claim 2 is characterized in that: described body comprises that one compresses the pressure section of radiator base plate and the adjutage that extends obliquely from the pressure section two ends so that the V-shaped setting of described body.

4. heat abstractor as claimed in claim 3 is characterized in that: arbitrary adjutage end of described body to the vertical range between the pressure section greater than the salient point of radiating fin distance to the bottom of radiating fin.

5. heat abstractor as claimed in claim 3 is characterized in that: the distance between the described two adjutage ends is substantially equal to the length of the passage between the described two adjacent radiating fins.

6. heat abstractor as claimed in claim 3 is characterized in that: the distance between the described two adjutage ends is greater than the distance between described two salient points.

7. heat abstractor as claimed in claim 2 is characterized in that: the described first button arm extends setting downwards from an end of body, and the second button arm is upwards bending again after the other end bending downwards of body then.

8. heat abstractor as claimed in claim 1 is characterized in that: edge is formed with the flanging of mutual buckle respectively about the described radiating fin.