CN2433801Y

CN2433801Y - Fastening device for heat sink

Info

Publication number: CN2433801Y
Application number: CN 00228498
Authority: CN
Inventors: 罗伟达
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: 2000-06-12
Filing date: 2000-06-12
Publication date: 2001-06-06
Anticipated expiration: 2010-06-12

Abstract

The utility model relates to a fastening device of a radiator. The utility model comprises a fastening pin and an elastic piece; the fastening pin is provided with a long columnar body, one end of the columnar body is provided with a head which has large cross area, the other end of the columnar body is provided with a reversely conical buckling section, and the center of the buckling section is further provided with a cutting groove; an annular spacing section is formed on a little upper position in the middle of the columnar body; the elastic piece is provided with a square basal section, the center of which is provided with a through hole, both sides of the square basal section are downwards extended to form an extension section which is slightly semicircular and openings of the extension sections are reverse, and extend sections are half in width of the basal section and are oppositely arranged on the positions of opposite angles of the lateral margin of the basal section.

Description

Buckling device of radiator

The utility model mainly is about a kind of buckling device of radiator, and particularly easy about a kind of dismounting, button keeps steady admittedly and the good buckling device of radiator of polarization.

Flourish along with electronic industry, it is important that the heat dissipation problem of electronic building brick more and more shows, and the design of corresponding buckling device of radiator also emerges in an endless stream.Existing buckling device of radiator can be made up of several clips 1 that are embedded at radiator 2 both sides with reference to Figure 1 and Figure 2.This clip 1 roughly is the T font, and top is the cantilever 12 that extends to two outsides, and central authorities are the button portions 14 of extending downwards, and the Lower Half of this button portion 14 is diagonally extending and be formed with a button hook 16 in the bottom inwardly slightly inwardly.During assembling, clip 1 relies on cantilever 12 to be embedded in the caulking groove 22 of radiator 2 both sides, and the button hook 16 that is positioned at the bottom then is snapped in the bottom edge of electronic building brick 3, so that the end face of radiator 2 and electronic building brick 3 fits tightly together.But there are many shortcomings in above-mentioned existing buckling device, such as:

1. this buckling device of radiator is difficult for mounting or dismounting, and very easily deforms in assembling and dissembling process, even produces fracture.

2. this buckling device of radiator only can limit the lateral displacement of radiator, but can not limit the longitudinal sliding motion of radiator.

3. this buckling device of radiator is to rely on specific size design, and by Lower Half slightly inwardly the button portion 14 of diagonally extending provide button to hold required strength, but that the button that it produced is held strength is very limited, and does not meet user demand.

Therefore, how to provide a kind of install and remove easy, button keeps steady solid and the good radiator of polarization attaches together and puts, real is problem extremely to be solved.

The purpose of this utility model is to provide a kind of buckling device of radiator easy, that button keeps steady admittedly, polarization is good of installing and removing.

The purpose of this utility model is achieved through the following technical solutions: this buckling device of radiator comprises that mainly one fastens a pin and a shell fragment.Wherein this fastening pin has a long column body, and an end of this cylinder is the bigger head of sectional area, and the other end is the inverted cone-shaped clamping part, and the central authorities of this clamping part further form a grooving, and the position in the cylinder upper middle further is formed with a ring-type limiting section; This shell fragment has a square base, and there is a perforation in base portion central authorities, and this base portion extends one respectively downwards and omits semicircular in shape and opening extension in opposite directions from both sides, and the width of this two extension is half of base widths and the diagonal position that is positioned at the base portion lateral margin relatively.

Compared with prior art, the utlity model has following distinguishing feature: install and remove easyly, be suitable for the operation of rate rapidly and efficiently of streamline; Clamping is firm, good positioning effect.And it is more stable to fasten the pin performance, can repeatedly use repeatedly.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the three-dimensional exploded view of existing buckling device of radiator and radiator.

Fig. 2 is the combination side figure of existing buckling device of radiator and associated component.

Fig. 3 is the three-dimensional exploded view of the utility model buckling device of radiator and associated component.

Fig. 4 is the part end view after Fig. 3 makes up.

Fig. 5 is the stereogram that the fastening of the utility model buckling device of radiator is sold another embodiment.

Fig. 6 is the stereogram that the fastening of the utility model buckling device of radiator is sold another embodiment.

Please consult Fig. 3 and Fig. 4 simultaneously, the utility model buckling device of radiator is to be used for a radiator 80 and an electronic building brick 90 are fitted tightly together.

This radiator 80 is made up of a base 82 and several radiating fins 84 that extends on the base 82, this base 82 from diagonal position respectively symmetry outwards extended a lug 86, all offer a hole 88 on each lug 86, wear for one group of buckling device of radiator correspondence and anchor position (seeing aftermentioned for details).

Every group of buckling device of radiator includes one and fastens pin 40 and one shell fragment 50.Wherein this fastening pin 40 has a long column body 44, one end of this cylinder 44 is the bigger head of sectional area 42, the other end then forms the clamping part 48 of inverted cone-shaped, and the central authorities of this clamping part 48 further form a grooving 488, with as the clamping part 48 required deformation space of strain inwardly.Position in cylinder 44 upper middles further forms a ring-type limiting section 46, and this limiting section 46 is to be used to prevent that shell fragment 50 from producing permanent deformation (seeing aftermentioned for details).

This shell fragment 50 has a square base 51, and its central authorities are formed with perforation 52, fastens on the pin 40 to be placed in.This base portion 51 extends one respectively downwards and omits semicircular in shape and opening extension 53 in opposite directions from both sides, the width of this extension 53 is half of base portion 51 width and the diagonal position that is positioned at base portion 51 lateral margins relatively, with when punching press is made shell fragment 50 continuously, the edge of front and back two shell fragments 50 is linked to each other and is reduced the waste material generation.

During assembling, at first will fasten the corresponding in regular turn perforation 52 of shell fragment 50 and the hole 88 of radiator 80 of passing of pin 40, so that the utility model buckling device of radiator and radiator 80 are combined in advance.Then, be placed on the electronic building brick 90, and the hole 88 of radiator 80 and the button hole 102 on the printed circuit board (PCB) 100 are aligned.Then, the head 42 of downward Pressing fastener dowel pin 40, make the clamping part 48 of fastening pin 40 pass the button hole 102 on the printed circuit board (PCB) 100 and realize buckle, the extension 53 of this shell fragment 50 will be out of shape generation elastic force and be pressed on the lug 86 of radiator 80 and make the bottom surface of radiator 80 fit tightly end face at electronic building brick 90 this moment, and the set ring-type limiting section 46 in cylinder 44 upper middles, then can stop the end of shell fragment 50 extensions 53 and limit the deflection of shell fragment 50 extensions 53, to avoid producing permanent deformation.

Fig. 5 and Fig. 6 are other embodiment that the utility model buckling device of radiator fastens pin.As shown in Figure 5, this fastening pin 40 is provided with the cylindric limiting section 46 of a diameter greater than cylinder 44 between head 42 and cylinder 44, and it can be used for preventing that shell fragment 50 (figure does not show) from producing permanent deformation.As shown in Figure 6, this fastens the position of pin 40 in the upper middle of cylinder 44, is formed with the limiting section 46 that two symmetries are protruded, and is used to prevent that shell fragment 50 (figure does not show) from producing permanent deformation.

Claims

1. buckling device of radiator, comprise that one fastens a pin and a shell fragment, it is characterized in that: this fastening pin has a long column body, the one end is the bigger head of sectional area, the other end is the inverted cone-shaped clamping part, the central authorities of this clamping part further form a grooving, and this fastening pin further is provided with limiting section at ad-hoc location; This shell fragment has a square base, and base portion central authorities are formed with and can be enclosed within the perforation that fastens on the pin, and this base portion extends one respectively downwards from both sides can prop up the extension that fastens the limiting section of selling.

2. buckling device of radiator as claimed in claim 1 is characterized in that: this base portion from both sides respectively downward extended extension slightly semicircular in shape and opening be in opposite directions.

3. buckling device of radiator as claimed in claim 2 is characterized in that: the width of this two extension is half of base widths and the diagonal position that is positioned at the base portion lateral margin relatively.

4. as claim 1,2 or 3 described buckling device of radiator, it is characterized in that: this limiting section is positioned at the position, upper middle that fastens the pin body and in the form of a ring.

5. as claim 1,2 or 3 described buckling device of radiator, it is characterized in that: this limiting section between head that fastens pin and cylinder, be cylindric and diameter greater than cylinder.

6. as claim 1,2 or 3 described buckling device of radiator, it is characterized in that: this limiting section is the structure of two symmetry protrusions and the position that is positioned at the upper middle that fastens the pin body.