TWI417038B - Clip and heat dissipation device having the same - Google Patents

Abstract

A heat dissipation device for dissipating heat generated by an electronic component includes a heat sink and two clips. The heat sink includes a base and a number of parallel fins extending from the base. The two clips are movably sleeved on two fins. Each clip includes a resisting part contacting a side surface of a corresponding fin, two stoppers mating with two ends of the corresponding fin, and two locking parts for engaging with a print circuit board of the electronic component. The two locking parts respectively extend from two ends of the resisting part. The two spaced stoppers respectively bend and extend from the resisting part, and are located between the two locking parts.

Description

Buckle and heat sink combination using the same

The present invention relates to a buckle and a heat sink assembly using the same, and more particularly to a buckle that can be easily attached and detached and a heat sink assembly using the same.

Nowadays, in the computer industry, in order to effectively dissipate the heat generated by the heat-generating electronic components, the method is generally applied to the heat-dissipating surface of the heat-generating electronic component to assist the heat dissipation of the heat-generating electronic components, thereby ensuring the heat-generating electronic components. Operate at the right temperature.

In order to closely attach the heat sink to the heat-dissipating surface of the heat-generating electronic component, a fastener is usually used to fix the heat sink to the circuit board on which the heat-generating electronic component is located. The clip is often integrally formed with the heat sink by a plurality of screws fixed to the heat sink. However, such a buckle is combined with a heat sink by means of a locking screw. When it is fixed or detached from the heat sink, an external tool is required, which is cumbersome and time consuming, and further improvement is required.

In view of this, it is necessary to provide a buckle that can be easily disassembled and a heat sink combination thereof.

A heat sink assembly for dissipating heat from a heat-generating electronic component, the heat sink assembly comprising a heat sink and two buckles, the heat sink including a base and the bottom a plurality of parallel and spaced heat dissipation fins extending from the surface of the seat, the two fasteners being movably sleeved on the two heat dissipation fins, each of the buckles being in contact with a side of the corresponding heat dissipation fin a second limiting portion that cooperates with the two ends of the heat dissipating fin and two locking portions for cooperating with the circuit board where the heat-generating electronic component is located, and the two locking portions respectively extend from the two ends of the abutting portion The two limiting portions are bent and extended from the abutting portion at intervals, and the two limiting portions are located between the two locking portions.

A fastener for fixing a heat sink, the buckle comprising an abutting portion, a second limiting portion and a second locking portion, wherein the two locking portions respectively extend from two ends of the abutting portion, the two limiting positions The portions are bent and extended from the abutting portion at intervals, and the two limiting portions are located between the two locking portions.

Compared with the prior art, in the heat dissipating device combination of the present invention, the two fasteners can be assembled and disassembled with the heat sink only by moving up and down along the height direction of the heat dissipating fins of the heat sink, which is convenient and quick. In addition, the above-mentioned fasteners can be mounted on any heat-dissipating fins of the heat sink, so that the distance between the latching portions of the buckles can be changed with the circuit boards of different specifications, and the applicability is strong.

The invention will now be further described with reference to the specific embodiments thereof with reference to the accompanying drawings.

100‧‧‧heat sink combination

10‧‧‧ radiator

20‧‧‧ buckle

11‧‧‧Base

12‧‧‧Fixing fin array

121‧‧‧ outermost fins

121a‧‧‧ inner surface

121b‧‧‧ outer surface

21‧‧‧Affiliation

22‧‧‧Limited

23‧‧‧Locking Department

221‧‧‧ Connection section

222‧‧‧Affiliated section

211‧‧‧Abutment

212‧‧‧ side

213‧‧‧ bottom

215‧‧‧ end face

214‧‧‧ top surface

216‧‧‧ openings

2161‧‧‧ first side

2162‧‧‧ second side

231‧‧‧Bend

232‧‧‧Locking Department

230‧‧‧ screw holes

1 is a perspective exploded view of a preferred embodiment of a heat sink assembly of the present invention.

2 is a perspective assembled view of the heat sink assembly of FIG. 1.

Hereinafter, the heat sink assembly of the present technical solution will be described in detail with reference to the accompanying drawings and embodiments.

Referring to Figure 1, a heat sink assembly 100 includes a heat sink 10 and two clips 20 for securing the heat sink 10 to the surface of a heat generating electronic component (not shown).

The heat sink 10 is integrally formed of a highly thermally conductive material such as copper, aluminum or an alloy thereof. The heat sink 10 includes a base 11 for contacting the heat-generating electronic component and a heat dissipation fin array 12 extending perpendicularly from a top surface of the base 11. The heat dissipation fin array 12 is composed of a plurality of heat dissipation fins arranged in parallel and spaced apart from each other. The heat dissipation fin array 12 includes two outermost heat dissipation fins 121 connected to the two ends of the base 11. Each of the outermost fins 121 has an inner surface 121a and an outer surface 121b. The two fastening devices 20 are movably sleeved on the heat dissipating fins 12 of the heat dissipating fin array 12 . In this embodiment, the two fastening devices 20 are movably sleeved on the heat dissipating fin array 12 . The second outermost fins 121 are fixed to the surface of the heat-generating electronic component.

Each of the fasteners 20 is a metal body forming structure, and includes an abutting portion 21, two limiting portions 22 and two locking portions 23. The two latching portions 23 respectively extend from the two ends of the abutting portion 21 and are located on the same side of the abutting portion 21 . The two latching portions 23 can be perpendicular to the abutting portion 21 or can be twisted outwardly relative to the abutting portion 21, that is, the two latching portions 23 can also be non-perpendicular to the abutting portion 21. The two limiting portions 22 are bent away from the abutting portion 21 at a distance from each other and are located on the same side of the abutting portion 21 . The two limiting portions 22 are located between the two latching portions 23 . Each of the limiting portions 22 includes a connecting portion 221 bently connected to the abutting portion 21 and an abutting portion 222 parallel to the abutting portion 21 . The two abutting portions 222 of the two limiting portions 22 are respectively spaced apart from the abutting portion 21 by the same distance. The distance between the abutting portion 21 and the abutting portion 222 of each limiting portion 22 is substantially the same as the thickness of the outermost radiating fin 121 that is coupled thereto, so that the outermost fin 14 is along the same The thickness direction is just between the abutting portion 21 and the abutting portion 222. The distance between the two connecting segments 221 of the two limiting portions 22 is substantially equal to the width of the outermost heat radiating fins 121 matched thereto, so that the outermost heat radiating fins 121 are disposed in the two connecting segments along the width direction thereof. Between 221.

Specifically, the abutting portion 21 is a rectangular sheet structure including an abutting surface 211 for contacting the inner surface 121a of the outermost heat radiating fin 121 and a side opposite to the abutting surface 211. 212, a bottom surface 213 for contacting the base 11, a top surface 214 opposite to the bottom surface 213, and two opposite end surfaces 215. The two openings 216 are respectively open to the abutting portion 21 near the two end faces 215 , and the two openings 216 penetrate through the abutting surface 211 and the side surface 212 . Each of the openings 216 defines a slit from the bottom surface 213, and adjacent sides thereof have a first surface 2161 parallel to the end surface 215 and a second surface 2162 parallel to the top surface 214.

The connecting portion 221 of the two limiting portions 22 is bent from the first surface 2161 of the second opening 216 near the end surface 215 to the abutting surface 211 of the abutting portion 21 by a certain distance (about the thickness of the outermost heat radiating fin 121). And then extends out of the abutment section 222 in a direction parallel to the abutment surface 211.

The two latching portions 23 extend perpendicularly from the opposite ends of the abutting surface 211 in a direction away from the abutting surface 211 . The two locking portions 23 and the two limiting portions 22 are located on the same side of the abutting portion 21 , that is, on the same side of the abutting surface 211 . Each of the locking portions 23 includes a curved portion 231 that is in contact with the bottom surface 213 of the abutting portion 21 and a locking portion 232 that cooperates with the heat-generating electronic component. Each of the curved portions 231 is located between an end surface 215 of the abutting portion 21 and an opening 216 adjacent to the end surface 215, and one end of the curved portion 231 is in contact with the end surface 215, and the other end is adjacent to the opening 216 of the end surface 215. Close to the end of the face One side is connected to 2161. Each of the latching portions 232 is a rectangular plate body having at least one screw hole 230 for engaging the screw or the bolt to fix the heat sink 10 to a circuit board (not shown) on which the heat generating electronic component is located.

It can be understood that the two locking portions 23 and the two limiting portions 22 can also be located on opposite sides of the abutting portion 21, for example, the two locking portions 23 are located on one side of the abutting surface 211, and the two limiting portions 22 are located. The other side of the side 212. In addition, the two limiting portions 22 may be located on the same side or different sides of the abutting portion 21 . The two locking portions 23 may be located on the same side or on the opposite side of the abutting portion 21 .

It can be understood that the two limiting portions 22 can also be a unitary structure. For example, the two abutting portions 222 of the two limiting portions 22 can be coupled together to form a limiting structure of the integral structure.

It can be understood that, according to the specification structure of the circuit board, the two fasteners 20 are not limited to be fitted to the two outermost heat dissipation fins 121 of the heat dissipation fin array 12 . As long as the heat sink 10 can be stably fixed to the surface of the heat-generating electronic component, the two fasteners 20 can be respectively fitted to the other heat-dissipating fins in the heat-dissipating fin array 12. Preferably, the two fasteners 20 are coupled to the two symmetrical heat dissipation fins of the heat dissipation fin array 12 . For example, the two fasteners 20 are respectively fitted to the secondary outer heat dissipation fins of the heat dissipation fin array 12 .

When the two clips 20 are assembled to the heat sink 10, the two clips 20 are respectively placed on the two outermost fins 121 from the top end of the heat sink 10, so that the clip 20 and the heat sink 10 are assembled. In one. The two ends of each of the outermost fins 121 are respectively abutted against the two limiting portions 22 of the corresponding clips 20, so that the clips 20 are fixed along the width direction of the two outermost fins 121. Each of the two retaining members 20 of the retaining portions 22 and the abutting portion 222 are matched with the outer surface 121a of the corresponding outermost radiating fin 121. The abutting surface 211 of the abutting portion 21 of the clip 20 cooperates with the inner surface 121a of the outermost fin 14121, so that the limiting portion 22 and the abutting portion 21 together 20 is fixed along the thickness direction of the outermost heat dissipation fin 121. Therefore, the clips 20 are fixed along the width and thickness directions of the two outermost fins 121, and are not fixed along the height direction of the two outermost fins 121. In this way, the two fasteners 20 can be movably fitted to the two outermost heat dissipation fins 121 along the height direction of the two outermost heat dissipation fins 12 . Obviously, the separation of the buckle 20 from the heat sink 10 can be achieved by moving the buckle 20 from the surface of the base 11 of the heat sink 10 to the top end of the outermost heat radiating fins 12.

When the clip 20 fixes the heat sink 10 to the heat-generating electronic component, the two clips 20 are located on the surface of the base 11 of the heat sink 10, and the second latching portion 23 of each clip 20 is heated by screws or bolts or other fixing members. The circuit board on which the electronic components are located or the backplane (not shown) on the back of the circuit board is fixedly connected. In this way, the heat sink 10 and the heat-generating electronic component are bonded and fixed.

Compared with the prior art, the above-mentioned clip 20 can be assembled and disassembled from the heat sink 10 only by moving up and down along the height direction of the heat sink fins of the heat sink 10, which is convenient and quick. In addition, the above-mentioned fasteners 20 can be mounted on any heat-dissipating fins of the heat sink 10. Thus, the locking portions 23 of the fasteners 20 can be changed with different circuit boards of different specifications, and the applicability is strong.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

100‧‧‧heat sink combination

10‧‧‧ radiator

20‧‧‧ buckle

11‧‧‧Base

12‧‧‧Fixing fin array

121‧‧‧ outermost fins

121a‧‧‧ inner surface

121b‧‧‧ outer surface

21‧‧‧Affiliation

22‧‧‧Limited

23‧‧‧Locking Department

221‧‧‧ Connection section

222‧‧‧Affiliated section

211‧‧‧Abutment

212‧‧‧ side

213‧‧‧ bottom

215‧‧‧ end face

214‧‧‧ top surface

216‧‧‧ openings

2161‧‧‧ first side

2162‧‧‧ second side

231‧‧‧Bend

232‧‧‧Locking Department

230‧‧‧ screw holes

Claims (12)

A heat sink assembly for dissipating heat from a heat-generating electronic component, the heat sink assembly comprising a heat sink and two buckles, the heat sink comprising a base and a plurality of parallel and spaced heat dissipation extending from the surface of the base The improvement of the fins is that the two fasteners are movably sleeved on the two heat dissipation fins, and each of the buckles includes an abutting portion contacting a side surface of the corresponding heat dissipation fin, and the heat dissipation fins The second matching portion of the end portion and the two locking portions for cooperating with the circuit board on which the heat-generating electronic component is located, the two locking portions respectively extend from the two ends of the abutting portion, and the two limiting portions are spaced apart from each other The ground is bent and extended from the abutting portion, and the two limiting portions are located between the two locking portions. The heat sink assembly of claim 1, wherein the clip is movably sleeved on the heat sink fin along a height direction of the heat sink fin. The heat sink assembly of claim 2, wherein each of the limiting portions has a connecting portion and an abutting portion extending from the connecting portion, each of the sets having the heat dissipation of the buckle The opposite ends of the fins are located between the two connecting sections of the two limiting portions of the fastening device, and the opposite sides of the heat dissipating fins are located between the abutting portion of the two limiting portions and the abutting portion. The heat sink assembly of claim 1, wherein the two fasteners are sleeved on the outermost heat radiating fins of the heat sink. The heat sink assembly of claim 4, wherein the abutting portion includes an abutting surface contacting the inner side surface of the outermost heat radiating fin, and a bottom surface matching the base of the heat sink. And two opposite end faces, the two incisions are respectively adjacent to the two The end surface is opened at the abutting portion, and the two slits are opened from the bottom surface. The heat sink assembly of claim 5, wherein the two connecting sections of the two limiting portions respectively extend from opposite sides of the two slits toward the end surface, and the two limiting portions are offset. The abutment section is parallel to the abutment surface of the abutment portion. The heat sink assembly of claim 6, wherein the latching portion and the limiting portion are located on the same side or opposite sides of the abutting portion. The heat sink assembly of claim 6, wherein each of the latching portions includes a bent portion extending from a bottom surface of the abutting portion and a locking portion extending from the bent portion. The curved portion is located between an end surface of the abutting portion and an opening close to the end surface. A fastener for fixing a heat sink, wherein the buckle comprises an abutting portion, a second limiting portion and a second locking portion, wherein the two locking portions respectively extend from two ends of the abutting portion, the two The limiting portions are bent out from the abutting portion, and the two limiting portions are located between the two locking portions, the abutting portion includes an abutting surface, a bottom surface and two opposite sides An end surface, the two slits are respectively opened on the abutting portion, and the two slits are opened from the bottom surface, and each of the limiting portions includes a connecting portion and an abutting portion extending from the connecting portion. The two connecting segments of the two limiting portions respectively extend from the side faces of the two slits facing the end faces, and the abutting portions of the two limiting portions are parallel to the abutting faces of the abutting portions. The fastener of claim 9, wherein each of the latching portions includes a bent portion extending from a bottom surface of the abutting portion and a locking portion extending from the bent portion, The bent portion is located between an end surface of the abutting portion and an opening close to the end surface. The buckle according to claim 9, wherein the second limit portion is located On the same side or on the opposite side of the part. The fastener of claim 9, wherein the two latching portions are located on the same side or on the opposite side of the abutting portion.