CN1125490C

CN1125490C - Heat sinking unit

Info

Publication number: CN1125490C
Application number: CN 00114192
Authority: CN
Inventors: 林雨利; 李朝阳; 孙仲勇; 曾兆坤
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: 2000-04-05
Filing date: 2000-04-05
Publication date: 2003-10-22
Anticipated expiration: 2020-04-05
Also published as: CN1316776A

Abstract

The present invention relates to a heat sink which comprises a radiator and a fastening device, wherein the radiator is composed of a base and a plurality of radiation fins, symmetrical convex lugs are outward arranged in the center of two side margins respectively, and each convex lug is provided with hles; the fastening device comprises a fixing element, a pair of hollow sleeve barrels and a pair of springs, the fixing element is provided with a long fixing plate and two slender convex posts which are positioned near both ends of the fixing plate and extend toward identical directions, and each convex post is composed of a plunger piston, a fastening section and a rod body. Each hollow sleeve barrel has a cap section, a cylindrical body and an inverted cone-shaped end, through holes longitudinally penetrate the inner part of the hollow sleeve barrel, and the through holes are orderly composed of the holes with different hole diameter from the top to the bottom. In addition, the cap section and part of the cylindrical body are provided with cutting grooves which enable the cap section to expand elastically outward and are used for fastening.

Description

Heat abstractor

The invention relates to a kind of heat abstractor, be meant that especially a kind of dismounting is easy, detain the heat abstractor that keeps steady admittedly and be beneficial to the printed board circuit wiring.

Along with developing rapidly of computing information industry, the arithmetic speed of associated wafer improves constantly, the heat that it produced also increases thereupon, for avoiding the too high stability that influences the wafer operation of temperature, usually need on wafer top surface, install a heat abstractor, in time heat is discharged, wafer can be moved under normal working temperature.Existing heat abstractor can be consulted Fig. 1, and it comprises radiator 20 and some buckling pieces 10.This radiator 20 is made up of base 26 and some radiating fins 24, and the base 26 of this radiator 20 is provided with the through hole 28 that some buckling pieces 10 for respective numbers wear.Please consult Fig. 2 simultaneously, this buckling piece 10 is by cap portion 12, cylinder 14, back taper portion 16, and the spring 18 that is set on this cylinder 14 forms, this back taper portion 16 with partly also offer a kerf 22 on the cylinder 14.During assembling, these several buckling piece 10 correspondences are passed button hole 32 on through hole 28 and the printed circuit board (PCB) 30 on the radiator 20, fasten the bottom surface of printed circuit board (PCB) 30 by back taper portion 16, and the elastic force of spring 18, radiator 20 and wafer 40 are fitted tightly.

Above-mentioned existing structure is to utilize buckling piece 10 from top to bottom to pass button hole 32 on the printed circuit board (PCB) 30, and buckle is realized in the bottom surface that fastens printed circuit board (PCB) 30 with back taper portion 16, be stability and the validity of guaranteeing buckle, the cylinder 14 and the back taper portion 16 of this buckling piece 10 must have the dimensions by tool, and this will cause the size of corresponding button hole 32 on the printed circuit board (PCB) 30 bigger, not only take the closeness of too much printed circuit board (PCB) 30 area effect wirings, also will increase the degree of difficulty of design circuit wiring simultaneously.In addition, if maintenance wafer or change heat abstractor and when needing to remove buckle, above-mentioned existing structure must be removed the buckle of 30 of back taper portion 16 and printed circuit board (PCB)s below printed circuit board (PCB) 30, inconvenience extremely in the operation.

Therefore, how to provide that a kind of dismounting is easy, button keeps steady solid and it is very important to be beneficial to the heat abstractor of printed board circuit wiring.

It is solid to the object of the present invention is to provide that a kind of dismounting is easy, button keeps steady, and and can reduce the heat abstractor that the printed circuit board (PCB) usable floor area is beneficial to the printed board circuit wiring.

The objective of the invention is to be achieved through the following technical solutions: this heat abstractor comprises radiator and buckling device.This radiator is made up of base and some radiating fins, and both side edges central authorities respectively symmetry outwards extended a lug, all offer a hole on each lug.This buckling device comprises a retaining element, a pair of cannulated sleeve and a pair of spring.This retaining element is provided with rectangular fixed head, and two symmetries are positioned near these fixed head two ends and the elongated projection that extends in the same way, each projection be by three of plunger, clamping part and the bodies of rod partly institute constitute.Each cannulated sleeve is provided with cap portion, cylinder and inverted cone shape end, and its inside is formed with the through hole that vertically runs through, and this through hole is made of the hole in different apertures from top to down in regular turn.In addition, on cap portion and cylinder partly, offer make this cap portion outward elasticity open and the grooving that utilizes during for buckle.

Compared with prior art, the present invention has following remarkable advantage: it is solid that not only dismounting is easy for this heat abstractor, button keeps steady, and can reduce the usable floor area of printed circuit board (PCB), and reduce the degree of difficulty of printed board circuit wiring.

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is the three-dimensional exploded view of existing heat abstractor.

Fig. 2 is the stereogram of existing heat abstractor buckling piece.

Fig. 3 is the three-dimensional exploded view of heat abstractor of the present invention, crystal covering type wafer and printed circuit board (PCB).

Fig. 4 is the stereogram of heat abstractor cannulated sleeve of the present invention.

Fig. 5 is the cutaway view that the cannulated sleeve of heat abstractor of the present invention is done along V-V line direction among Fig. 4.

Fig. 6 is the stereogram of heat abstractor retaining element of the present invention.

Fig. 7 is the combination of side view of heat abstractor of the present invention, crystal covering type wafer and printed circuit board (PCB).

Please consult Fig. 3 to Fig. 7 simultaneously, heat abstractor of the present invention comprises radiator 80 and buckling device (describing in detail as the back), radiator 80 and wafer 90 can be fitted tightly together by this buckling device.

This radiator 80 is made up of

base

76 and 72,74 of some radiating fins, and wherein the bottom surface of this base 76 is arranged with a pair of block 86 and a pair of locating piece 88 that cooperates with the location of 90 of wafers for radiator 80.These some radiating

fins

72,74 are formed on the end face of base 76, and wherein this radiating fin 74 is located at middle section, and offer some being parallel to each other in order to strengthen the conduit 78 of radiating effect.This radiator 80 both side edges central authorities respectively symmetry outwards extended lug 82, offer on this lug 82 for buckling device and wear the hole 84 that anchors a usefulness (describing in detail as the back).

This buckling device comprises a retaining element 70, a pair of cannulated sleeve 50 and a pair of spring 60.This retaining element 70 is provided with rectangular fixed head 64, and two symmetries are positioned near these fixed head 64 two ends and the elongated projection 66 that extends in the same way, each projection 66 is partly to constitute (seeing also Fig. 6) by plunger 662, clamping

part

664 and 666 3 of the bodies of rod, wherein this body of rod 666 is connected with fixed head 64, this clamping part 664 then between the plunger 662 and the body of rod 666 and its sectional area less than the sectional area of plunger 662.Be appreciated that between this two projection 66 also can be linked, and change the form of two monomers into without fixed head 64.

Each cannulated sleeve 50 is provided with cap portion 52, cylinder 54 and inverted cone shape end 56 (seeing also Fig. 4 and Fig. 5), wherein this cylinder 54 between cap portion 52 and end 56 and its external diameter less than cap portion 52 external diameter with end 56.These cannulated sleeve 50 inside are formed with the through hole 62 that vertically runs through, this through hole 62 is made of 622,624,626,628 of the holes in different apertures from top to down in regular turn, wherein this hole 626 has minimum aperture, for projection 66 on have the long-pending clamping part 664 of small cross sections and cooperate buckle.In addition, on cap portion 52 and cylinder 54 partly, offer make this cap portion 52 outward elasticity open and the grooving 58 that utilizes during for buckle.

(seeing also Fig. 3 and Fig. 7) during assembling, is earlier spring 60 to be set on the cylinder 54 of cannulated sleeve 50, it is plugged in the hole 84 of radiator 80 both sides lugs 82 again.Then, this radiator 80 is placed on wafer 90 end faces, and with the upwards installing of this retaining element 70 from printed circuit board (PCB) 100 belows, allow projection 66 pass the aperture 68 of printed circuit board (PCB) 100 in regular turn, and the through hole 62 of cannulated sleeve 50, finish buckle up to the clamping part 664 and the hole 626 of through hole 62 of projection 66.

Claims

1. a heat abstractor comprises radiator and buckling device, and this radiator is made up of base and some radiating fins, it is characterized in that: the lateral margin of this radiator has outwards extended lug, offers hole on this lug; And this buckling device comprises a retaining element, the cannulated sleeve that matches with retaining element and flexible member, wherein this cannulated sleeve is interior and its inner through hole that is formed with of hole that is inserted in the radiator lug, this flexible member is sheathed on this cannulated sleeve, this retaining element is positioned at this radiator below, and it has the projection in the through hole that is embedded in this cannulated sleeve.

2. heat abstractor as claimed in claim 1 is characterized in that: this flexible member is a spring.

3. heat abstractor as claimed in claim 1 is characterized in that: this cannulated sleeve is provided with cap portion, cylinder and inverted cone shape end, this cylinder between cap portion and end and its external diameter less than the external diameter of cap portion and end.

4. heat abstractor as claimed in claim 3 is characterized in that: offer on the cap portion of this cannulated sleeve and the part cylinder and make this cap portion open grooving of elasticity outward.

5. heat abstractor as claimed in claim 1 is characterized in that: this projection be by three of plunger, clamping part and the bodies of rod partly institute constitute, this buckle part between the plunger and the body of rod and its sectional area less than the sectional area of plunger.

6. heat abstractor as claimed in claim 5 is characterized in that: the through hole of this cannulated sleeve inside vertically runs through and is made of the hole in different apertures, the hole that wherein has a minimum-value aperture in order to the clamping part buckle of projection.

7. as claim 1,2,3,4,5 or 6 described heat abstractors, it is characterized in that: this lug by this radiator both side edges central authorities respectively symmetry outwards extend and form, offer hole on it.

8. heat abstractor as claimed in claim 7 is characterized in that: this buckling device comprises a pair of cannulated sleeve and a pair of flexible member, and the retaining element of this buckling device has two projections.

9. heat abstractor as claimed in claim 8 is characterized in that: this two projection is linked with a fixed head, and symmetry is positioned near and the extension in the same way each other in two ends of this fixed head.

10. as claim 1,2,3,4,5 or 6 described heat abstractors, it is characterized in that: these some radiating fins are formed on the end face of base, and also are arranged with a pair of block and a pair of locating piece on the bottom surface of base.

11. as claim 1,2,3,4,5 or 6 described heat abstractors, it is characterized in that: this is positioned on the radiating fin of middle section and also offers some conduits that are parallel to each other.

12. buckling device, mainly comprise a retaining element, the cannulated sleeve that matches with retaining element and flexible member, it is characterized in that: this retaining element has projection, this cannulated sleeve inside is formed with the through hole of using for the projection inlay card of retaining element, and this flexible member is sheathed on this cannulated sleeve.

13. buckling device as claimed in claim 12 is characterized in that: this flexible member is a spring.

14. buckling device as claimed in claim 12 is characterized in that: this cannulated sleeve is provided with cap portion, cylinder and inverted cone shape end, this cylinder between cap portion and end and its external diameter less than the external diameter of cap portion and end.

15. buckling device as claimed in claim 14 is characterized in that: offer on the cap portion of this cannulated sleeve and the part cylinder and make this cap portion open grooving of elasticity outward.

16. buckling device as claimed in claim 12, it is characterized in that: this projection is partly to be made of plunger, clamping part and three of the bodies of rod, should in order to and the buckle part of the through hole inlay card of cannulated sleeve between the plunger and the body of rod, and its sectional area is less than the sectional area of plunger.

17. buckling device as claimed in claim 16 is characterized in that: the through hole of this cannulated sleeve inside vertically runs through and is made of the hole in different apertures, the hole that wherein has a minimum-value aperture in order to the clamping part inlay card of projection.

18. as claim 12,13,14,15,16 or 17 described buckling devices, it is characterized in that: this buckling device comprises a pair of cannulated sleeve and a pair of flexible member, the retaining element of this buckling device then has two projections.

19. buckling device as claimed in claim 18 is characterized in that: this two projection is linked with a fixed head, and symmetry is positioned near and the extension in the same way each other in two ends of this fixed head.