TWI442881B - Fixing apparatus for heat sink - Google Patents

Description

Radiator fixture

The invention relates to a heat sink fixing device.

A heat sink is required on the electronic components on the motherboard (such as the south and north bridge chips) to dissipate heat. Typically, the motherboard is provided with a pair of snaps at two opposite sides of the electronic component. When installing the heat sink, first place the heat sink on the electronic component, and then press the heat sink on the electronic component by using the elastic fastening device with the hooks at both ends respectively, and then the hooks of the fastening device are respectively stuck. The pair of snaps are inserted to fix the heat sink to the motherboard. Since the position of the buckle portion is fixedly disposed on the motherboard, it is necessary to adjust the placement direction of the heat sink so that the fastening device can be engaged with the buckle portion of the motherboard, and the installation efficiency is low.

In view of the above, it is necessary to provide a heat sink fixing device for fixing a heat sink placed in different directions.

A heat sink fixing device for fixing a heat sink to a motherboard for dissipating heat to the electronic components of the motherboard, the heat sink fixing device comprising a mounting hole provided with a through hole and fixed to the motherboard, at least Two snap members mounted on the mounting seat and a fastening member for pressing the heat sink against the electronic component and respectively engaging with one latching member at the two ends, the electronic component of the motherboard is received In the through hole, the mounting seat is provided with at least one annular sliding groove around the through hole, and each sliding slot is slidably mounted Two snaps.

Compared with the prior art, the latching member of the heat sink fixing device can be slid relative to the main board to adjust the position, so that the placing direction of the heat sink can be adjusted, thereby improving the mounting efficiency.

10‧‧‧ Mounting

11‧‧‧through hole

12‧‧‧Fixed holes

13‧‧‧Chute

131‧‧‧Installation holes

135‧‧‧ openings

20‧‧‧Card fasteners

200‧‧‧heatsink

202‧‧‧Heat fins

204‧‧‧Installation slot

22‧‧‧Base

221‧‧‧ Ontology

223‧‧‧Boss

24‧‧‧Card Department

242‧‧‧ buckle

30‧‧‧Fittings

32‧‧‧Resistance Department

34‧‧‧Bucking arm

342‧‧‧ hook

40‧‧‧Fixed parts

400‧‧‧ motherboard

402‧‧‧Electronic components

404‧‧‧Cargukong

42‧‧‧ rod body

421‧‧‧ head

423‧‧‧ Fixed Department

44‧‧‧ Spring

1 is a perspective exploded view of a preferred embodiment of a heat sink fixture of the present invention and a heat sink and a motherboard, the heat sink fixture including a mount.

Figure 2 is a cross-sectional view of the mount of Figure 1 taken along line II-II.

3 is a perspective assembled view of FIG. 1.

Figure 4 is a partial cross-sectional view of Figure 3.

FIG. 5 is a perspective assembled view of another preferred embodiment of the heat sink fixture of the present invention with a heat sink and a motherboard.

Referring to FIG. 1 , a preferred embodiment of the heat sink fixing device of the present invention is used to fix a heat sink 200 to a motherboard 400 . The heat sink fixing device includes a mounting base 10 , a pair of latching members 20 , and a The elastic fastener 30 and the plurality of fixing members 40.

The substrate of the heat sink 200 is provided with a plurality of heat dissipation fins 202 and a mounting groove 204.

The motherboard 400 is provided with an electronic component 402 and a plurality of fastening holes 404 spaced around the electronic component 402.

Referring to FIG. 2 at the same time, in the embodiment, the mounting base 10 is a square plate body, and a circular through hole 11 is defined in the middle portion thereof, and a fixing hole 12 is respectively disposed at four corners thereof. The mounting base 10 is further provided with an annular sliding groove 13 surrounding the through hole 11. The chute 13 The longitudinal section is trapezoidal with two opposing sloping sidewalls, a wider bottom and a narrower opening 135. The chute 13 is provided with a mounting hole 131 extending through the bottom thereof.

Each of the fastening members 20 includes a base 22 and a fastening portion 24 extending from the base 22 . The base 22 includes a disk-shaped body 221 having a larger diameter and a boss 223 having a smaller diameter extending from a central portion of the body 221. The diameter of the body 221 is smaller than the diameter of the mounting hole 131 of the mounting seat 10 and larger than the width of the opening 135 of the sliding slot 13. The end of the fastening portion 24 (the end away from the boss 223) is provided with a buckle 242.

The fastening member 30 is formed by bending an elastic metal strip, and includes a rod-shaped pressing portion 32 and a pair of fastening arms 34 extending obliquely from opposite ends of the pressing portion 32 in opposite directions. Each of the latching arms 34 is bent away from an end of the pressing portion 32 to form a hook 342.

The fixing members 40 are used to fix the mounting base 10 to the motherboard 400, which may be a screw, a rivet or other common connecting members. In the present embodiment, each fixing member 40 includes a rod body 42 and a spring 44 sleeved on the rod body 42. The first end of the rod 42 forms a larger head 421, and the second end of the rod 42 (the end away from the head 421) is provided with a substantially triangular and elastically deformable fixing portion 423.

Referring to FIG. 3 and FIG. 4 , the two latching members 20 are respectively loaded into the sliding slot 13 from the lower side of the mounting base 10 by the mounting hole 131 during assembly. Since the diameter of the body 221 of the two fastening members 20 is larger than the width of the opening 135 of the sliding slot 13, the two fastening members 20 cannot be disengaged from the opening 135 of the sliding slot 13.

The mounting hole 10 is placed on the motherboard 400 such that the fixing hole 12 of the mounting base 10 is aligned with the fixing hole 404 of the motherboard 400, and the electronic component 402 is received in the through hole 11 of the mounting base 10. Pressing the head of each fixing member 40 toward the direction of the motherboard 400 The portion 421 is deformed by the second end of the fixing portion 423 and enters the corresponding fixing hole 12 of the mounting base 10 and the corresponding fixing hole 404 of the motherboard 400. At the same time, the spring 44 sandwiched between the head portion 421 of the fixing member 40 and the mounting seat 10 is also deformed by being pressed. The fixing portion 423 passes through the fastening hole 404 of the motherboard 400 and recovers deformation. The fixing member 40 is released, the spring 44 is restored to deform, and the head portion 421 of the pushing and fixing member 40 is retracted away from the main board 400. The fixing portion 423 of the rod 42 is locked to the mounting plate 400. The side of the 10 is such that the mount 10 is fixed to the motherboard 400.

The pressing portion 32 of the fastening member 30 is caught in the mounting groove 204 of the heat sink 200. The heat sink 200 passes through the through hole 11 of the mount 10 such that its substrate can be placed on the electronic component 402 in any direction. The two fastening members 20 are slid along the sliding slot 13 so as to be adjacent to the two fastening hooks 342 of the fastening component 30 respectively. The two fastening arms 34 of the fastening component 30 are hooked to the buckles 242 of the two fastening components 20 respectively. The two latching arms 34 are released, and the two latching arms 34 are rebounded to pull the two latching members 20 toward the opening 135 of the sliding slot 13. The body 221 of the base 22 of the two latching members 20 is locked. The side wall of the chute 13 is such that the heat sink 200 is held on the motherboard 400.

Referring to FIG. 5, in another preferred embodiment of the heat sink fixing device of the present invention, the mounting base 100 includes two annular and concentric sliding grooves 130 and 150, and the shapes of the two sliding grooves 130 and 150 and the first embodiment. The chute 13 of the middle mount 10 is the same. The bottoms of the two sliding slots 130 and 150 are respectively provided with a mounting hole (not labeled) for respectively loading a pair of latching members 20. Therefore, heat sinks of different sizes can be held on the motherboard 400 using fasteners of different lengths.

Since the fasteners 20 slide relative to the motherboard 400 by the sliding grooves 130 or 150, the positions of the fasteners 20 are adjusted, so that the placement direction of the heat sink can be flexibly adjusted. It can be understood that the chutes 130 and 150 can be set not only in a ring shape but also as needed. Set in a square shape or other shape, the position of the fasteners 20 can also be adjusted; in addition, a convex rail can be disposed on the mounting seat, and correspondingly, the convex rail sliding card of the mounting member is disposed on the fastening member 20 The recesses can also slide the fasteners 20 relative to the mounting seat to adjust the position.

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.

10‧‧‧ Mounting

11‧‧‧through hole

12‧‧‧Fixed holes

13‧‧‧Chute

131‧‧‧Installation holes

20‧‧‧Card fasteners

200‧‧‧heatsink

202‧‧‧Heat fins

204‧‧‧Installation slot

22‧‧‧Base

221‧‧‧ Ontology

223‧‧‧Boss

24‧‧‧Card Department

242‧‧‧ buckle

30‧‧‧Fittings

32‧‧‧Resistance Department

34‧‧‧Bucking arm

342‧‧‧ hook

40‧‧‧Fixed parts

400‧‧‧ motherboard

402‧‧‧Electronic components

404‧‧‧Cargukong

42‧‧‧ rod body

421‧‧‧ head

423‧‧‧ Fixed Department

44‧‧‧ Spring

Claims (7)

A heat sink fixing device for fixing a heat sink to a motherboard for dissipating heat to the electronic components of the motherboard, the heat sink fixing device comprising a mounting seat provided with a through hole and fixed to the motherboard The electronic components of the motherboard are received in the through hole, at least two latching members are slidably mounted on the mounting seat, and a heat sink is pressed against the electronic component, and the two ends are respectively engaged with a latching component. The electronic component of the motherboard is received in the through hole, and the mounting seat is provided with at least one annular sliding groove around the through hole, and each sliding slot is slidably provided with two latching members. The heat sink fixing device of claim 1, wherein the bottom of the sliding slot is provided with a mounting hole through which the fastening member passes to engage the sliding slot. The heat sink fixing device of claim 1, wherein the sliding slot has a wider bottom portion and an opening opposite to the bottom portion, and each of the fastening members includes a base, and the base includes a base a disc-shaped body having a larger diameter and a boss having a smaller diameter extending from the body, the diameter of the body being larger than the size of the opening of the chute and smaller than the size of the mounting hole. The heat sink fixing device according to claim 3, wherein the sliding groove has a trapezoidal longitudinal section. The heat sink fixing device of claim 3, wherein each of the fastening components further comprises a fastening portion extending from the base thereof, the fastening component comprising a heat sinking device. a pressing portion and two latching arms respectively extending from opposite ends of the pressing portion and engaging with the corresponding fastening portions of the latching members. The heat sink fixing device of claim 5, wherein the end of the fastening portion of each of the fastening members forms a buckle, and the two fastening arms of the fastening member are respectively disposed at one end away from the pressing portion. There is a hook that hooks the buckle of the fastening portion. The heat sink fixing device of claim 1, wherein the fastening component is bent from an elastic metal strip.