TWI397801B - Protective device - Google Patents

Description

protection cap

The invention relates to a protective cover, in particular to a protective cover for protecting the thermal conductive adhesive of the heat sink from contamination.

At present, in the field of heat dissipation of electronic components, a heat sink is usually added on the surface of the electronic component to discharge the heat generated by the heat sink in time, so that the heat sink and the surface of the electronic component are in close contact to reduce the thermal resistance of the interface, and the operator usually uses a heat sink. A thermal adhesive having a good viscosity and a high thermal conductivity is applied between the contact surface of the electronic component, so that the surface of the heat sink is more closely contacted with the surface of the heat-generating electronic component, thereby enhancing the heat conduction effect. However, since the thermal conductive adhesive is a paste-like and easily contaminating chemical, it is necessary to protect the thermal conductive adhesive.

The conventional protective cover usually has a rectangular cover body covering the thermal conductive adhesive coated on the top of the heat sink. To some extent, conventional techniques can effectively protect the thermal conductive adhesive. However, when the area of the thermal conductive adhesive is close to or even equal to the area of the top of the heat sink, the conventional protective cover structure may scratch and contaminate the thermal conductive adhesive on the one hand, and may be easily deformed when subjected to force due to excessive cover area, and may not be effective. Protect the thermal paste.

A protective cover for protecting a thermal conductive adhesive on a heat sink, the protective cover corresponding to the top of the heat spreader coated with the thermal conductive adhesive The cover body comprises a frame body and a cover body extending from the frame body. The frame body is fitted around the top of the heat sink, and a closed protection space is formed between the cover body and the top of the heat sink. The cover body includes a cover plate and a plurality of inclined walls extending obliquely downward from the periphery of the cover plate and connected to the top end edge of the frame body.

Compared with the prior art, the protection space of the protective cover of the present invention is formed by tilting the top end edge of the frame obliquely upward and inward, and even if the thermal conductive adhesive is applied to the entire top surface of the heat sink, contamination can be avoided. Moreover, the overall structure of the protective cover can withstand a large pressure, thereby effectively protecting the thermal conductive adhesive.

Please refer to FIG. 1 , which is a perspective view of a protective cover 10 , a heat sink 20 , and a buckle 40 according to a preferred embodiment of the present invention. The heat sink 20 is configured to absorb and dissipate heat generated by a heat-generating electronic component such as a central processing unit (not shown). The top of the heat sink 20 is in contact with the heat-generating electronic component, and a layer of thermal conductive adhesive 30 is coated on the heat sink. The top of the heat sink 20 is disposed on the top of the heat sink 20 to protect the heat conductive adhesive 30. The buckle 40 is attached to the heat sink 20 for fixing the heat sink 20 to be close to the heat-generating electronic component. contact.

Referring to FIG. 2 together, the protective cover 10 is a hollow casing as a whole, and is integrally formed by using plastic or metal materials. The protective cover 10 includes a frame body 12, two receiving portions 14 extending from the bottom of the frame body 12 to the two sides, and an inward portion from the top of the frame body 12. A cover body 16 is extended. The cover body 16 includes a rectangular cover plate 164 and four trapezoidal inclined walls 162 extending obliquely downward from the four sides of the cover plate 164 (not shown). The frame 12 of the protective cover 10 is a rectangular frame surrounded by four vertical frame edges 122. The frame 12 conforms in shape to the top of the heat sink 20. The accommodating portion 14 has a rectangular shape and is outwardly extended from the bottom end of the frame body 12 opposite to the frame end 122. The two accommodating portions 14 are hollow inside and communicate with the frame 12 for receiving. The corresponding portion of the buckle 40. The cover 164 of the cover 16 is a thin flat rectangular plate correspondingly located above the inclined wall 162. The cover 164 is perpendicular to the frame edge 122 and parallel to the top surface of the heat sink 20. The slanting walls 162 are respectively inclined downwardly and outwardly from the periphery of the cover 164 and are connected to the top edges of the four rims 122 to form a half-closed accommodating space 160 inside the cover 16 .

The heat sink 20 is integrally formed of a metal material having good thermal conductivity, such as aluminum or copper, and includes a substrate 22 and a plurality of heat dissipation fins 24 extending vertically downward from the bottom surface of the substrate 22 and arranged in parallel. The substrate 22 is a rectangular plate whose outer shape conforms to the shape of the space (not shown) enclosed by the frame 12. A groove 26 is formed between the bottom surface of the substrate 22 and the heat dissipation fins 24 for placing the fastener 40.

The buckle 40 is a linear fastener, which is integrally bent from an elastic metal wire, and includes a pressing portion 42 and two pressing portions 42 The two ends of the buckle arms 44 are respectively formed at the ends, and the ends of the buckle arms 44 respectively form a hook 46. The pressing portion 42 is disposed in the groove 26 formed on the bottom surface of the substrate 22 of the heat sink 20, and has a length slightly larger than the length of the groove 26, so that the two fastening arms 44 are respectively located on opposite sides of the heat sink 20.

Referring to FIG. 3 together, when the assembly is assembled, the protective cover 10 is disposed on the top of the heat sink 20. The four frame sides 122 of the cover 10 of the protective cover 10 and the four sides of the base plate 22 of the heat sink 20 (not The pressing portion 42 of the buckle 40 is correspondingly disposed in the groove 26 of the heat sink 20. The two ends of the pressing portion 42 (not labeled) respectively protrude from the portion of the heat sink 20 The cover portion 16 of the protective cover 10 and the substrate 22 of the heat sink 20 form a closed space (not labeled) for receiving and coating on the top surface of the substrate 22. Thermal adhesive 30. In addition, in order to increase the rigidity of the protective cover, the protective cover 10 may be directly affixed to the inner side of the frame side 122 of the frame 12 of the protective cover 10, or the outer side of the frame 12 may be provided with a tape. The protective cover 10 and the heat sink 20 are bonded.

The frame 12 of the protective cover 10 of the present invention is attached around the top of the heat sink 20, and the installation is firm and convenient. Moreover, the cover 16 of the protective cover 10 is obliquely and inwardly extended from the entire top of the frame 12. Even if the thermal adhesive 30 is applied to the entire top surface of the heat sink 20, the thermal conductive adhesive 30 can be effectively prevented from being contaminated. In addition, the receiving portion 14 of the protective cover 10 frame 12 can avoid the buckle on the one hand. 40, when the relative sliding occurs, the protective cover 10 is loosened or even detached, and on the other hand, when the protective cover 10 is removed, it can be used as a force point for easy disassembly.

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.

Protective cover ‧‧10

Frame ‧‧12

Bezel ‧‧122

Housing Department ‧‧14

Cover ‧‧16

Housing space ‧ ‧ 160

Sloping wall ‧‧162

Cover ‧‧‧164

Radiator ‧‧20

Substrate ‧‧22

Cooling fins ‧‧24

Trench ‧‧26

Thermal adhesive ‧‧30

Buckle ‧‧40

Relief Department ‧ ‧ 42

Buckle arm ‧‧44

Clasp ‧‧46

1 is an exploded perspective view of a protective cover, a heat sink and a buckle according to a preferred embodiment of the present invention.

Figure 2 is an inverted view of the protective cover of Figure 1.

3 is a perspective assembled view of the protective cover, the heat sink and the buckle in FIG.

Protective cover ‧‧10

Frame ‧‧12

Housing Department ‧‧14

Cover ‧‧16

Sloping wall ‧‧162

Cover ‧‧‧164

Radiator ‧‧20

Substrate ‧‧22

Cooling fins ‧‧24

Trench ‧‧26

Thermal adhesive ‧‧30

Buckle ‧‧40

Relief Department ‧ ‧ 42

Buckle arm ‧‧44

Clasp ‧‧46

Claims (10)

A protective cover for protecting a thermal conductive adhesive on a heat sink, the protective cover corresponding to the top of the heat spreader coated with the thermal conductive adhesive and covering the thermal conductive adhesive, comprising a frame and extending from the frame a cover body, the frame body is fitted around the top of the heat sink, and a closed protection space is formed between the cover body and the top of the heat sink, wherein the cover body comprises a cover plate and a plurality of cover plates The peripheral edge is inclined downwardly and outwardly and connected to the inclined wall of the top edge of the frame. The protective cover of claim 1, wherein the cover is located above the top of the top of the heat sink and parallel to the top of the heat sink. The protective cover of claim 2, wherein the cover is rectangular, and the inclined walls are trapezoidal. The protective cover of claim 2, wherein the frame of the protective cover is a rectangular frame surrounded by four frames, and each of the frame edges is perpendicular to the cover of the cover. The protective cover of claim 1 or 2, further comprising a buckle attached to the heat sink for fixedly mounting the heat sink, the buckle portion extending out of the heat sink to Other components are buckled. The protective cover of claim 5, wherein the protective cover further comprises at least one receiving portion, the inner portion of which is hollow to accommodate Set part of the buckle. The protective cover of claim 6, wherein the receiving portion extends outwardly from a central portion of the bottom end of the frame frame, and the housing portion of the receiving portion communicates with each other. The protective cover of claim 6, wherein the receiving portion has a rectangular shape as a whole. The protective cover according to claim 1 or 2, wherein the protective cover has a side surface coated with an adhesive. The protective cover of claim 1 or 2, wherein the protective cover further comprises a tape attached to a side of the outer surface of the frame, the tape bonding the protective cover to the heat sink.