CN2476918Y - Pressure adjustment device for cooling elements - Google Patents

Abstract

A pressure adjustment device for a heat dissipation device comprises at least one elastic fastener and a plurality of fastening posts, wherein the elastic fastener is substantially "" Jiong "" and has a pressing portion with a slot at each of two free ends thereof, and the fastening posts have an adjusting end and a fixed end and are fixed on a circuit board by the fixed ends thereof and located beside the heat source, such that the elastic fastener is bridged over the heat dissipation device to press the pressing portion thereof against the heat dissipation device, and each slot is corresponding to the adjusting end of the fastening post. The positions of the slots can be adjusted by adjusting the plurality of levels of the adjusting end to make the heat dissipation device be uniformly and tightly attached to the heat source.

Description

Pressure adjustment device for cooling elements

The utility model relates to a pressure regulating device for a heat dissipation element.

With the advancement of science and technology, in order to pursue faster processing of all affairs, the increase in the processing speed of some auxiliary electronic tools is often required by manufacturers and users: however, the increase in speed often makes electronic products The temperature caused by the generated heat increases, so most manufacturers install heat dissipation elements, such as heat dissipation fins, on the heat source that generates heat inside the electronic product to help the heat source dissipate heat.

There are many ways to set up the heat dissipation fins on the heat source, such as directly locking them with screws, as shown in FIG. Two screw holes 14 are perforated on the circuit board 11, and the two screw holes 14 are roughly symmetrically arranged around the heat source 12, and a lug 15 respectively protrudes from the heat dissipation fin 13 corresponding to the two screw holes 14. Each lug 15 is perforated with a perforation 16. When assembling the heat dissipation fin 13 on the heat source 12, the heat dissipation fin 31 is first placed on the heat source 12, and each through hole 16 is aligned with each screw hole 14. , and then lock the lugs of the cooling fins 13 on the screw holes 14 with screws 17, so that the cooling fins 13 can be fixed on the heat source 12; however, although the cooling fins 13 can be firmly fixed on the heat source 12 in this way , but each assembly and disassembly must use a screwdriver (not shown in the figure) to lock and remove the screw 17, which is not only troublesome and time-consuming, but also if the contact pressure is uneven or inappropriate, it may be damaged due to the screw lock Excessive tightness may cause the heat source to rupture or be damaged. Moreover, this structure of the prior art does not have any adjustment function, perhaps by slightly loosening the screw 17 to adjust part of the pressure, but when the screw 17 is loosened, it will cause the loosening and shaking of the entire cooling fin 13 Therefore, the screw 17 is likely to fall off, and the heat dissipation sheet 13 is also separated from the heat source 12 thereupon.

In addition, there are also many shrapnel-type erection methods, such as the "CPU heat sink buckle assembly" disclosed in the No. 377849 (application number is No. 086221127) announcement as shown in Figure 2, which includes a cooling fin 21 And an adjustment group 22, a long slot 23 is provided in the middle of the heat dissipation fin 21, and the adjustment group 22 also has an elastic piece 24 and a hook piece 25, one end of the elastic piece 24 has a button hole 241, and the other end is Hollow out group insertion end 243, the two side edges of the insertion group end 243 are formed with barbs, and the hook piece 25 is used to match the insertion group end 243, and there is a button hole 251 at the bottom of the hook piece 25, and the button hole 251 The top is provided with a group insertion hole 253, and the two sides of the insertion group hole 253 are protruded with symmetrical protrusions. When assembling, the cooling fins 21 are first placed on the CPU, and then the shrapnel 24 is passed through the long slot 23, and Hook the buckle hole 241 on the convex rib 281 on the side of the seat body 28 where the CPU is erected, and finally align the inserting end 243 of the elastic piece 24 with a group of protrusions in the inserting hole 253 and insert it, and make the buckle at the bottom of the hook piece 25 The hole 251 snaps into the convex rib 281 on the other side of the seat body 28: However, there are some disadvantages in the adjustment combination of the elastic piece 24 and the hook piece 25:

1. When it is desired to adjust the pressure exerted by the shrapnel 24 on the cooling fins 21, the insertion end 243 of the shrapnel 24 must be completely pulled out from a set of protrusions in the insertion hole 253, and then another protrusion is selected for insertion. It is troublesome, and the button hole 251 of the hook piece 25 must be detached from the convex rib 281 every time, and then reinstalled.

2. Every time the shrapnel 24 is adjusted, most of the pressure applied to the cooling fins 21 is concentrated at point A, so the adjustment of the pressure is not uniform and comprehensive, and this adjustment is only for different strains. The thickness of the CPU can be securely fixed with the cooling fins 21 , but the pressure cannot be evenly distributed.

3. The manufacture of the elastic piece 24 and the hook piece 25 is relatively troublesome, because a button hole 241 must be provided at one end of the elastic piece 24, and a hollowed-out insertion end 243 must be provided at the other end, and barbs are formed on both sides of the insertion end 243; The hook piece 25 is provided with a button hole 251 and an insertion hole 253 , and symmetrical protrusions must be provided on both sides of the insertion hole 253 .

According to the above, the main purpose of this utility model is to provide a pressure regulating device with multi-stage adjustment function, which can fully adjust the pressure applied to the heat source by each heat dissipation element, so that it can timely provide the pressure between the heat dissipation element and the heat source. Good contact for ideal heat transfer between the two.

Another object of the present invention is to provide an operation that is easy to manufacture, easy to assemble, and very fast and simple to adjust the pressure.

In order to achieve the above object, the utility model includes at least one elastic fastener and several fastening columns. The elastic fastener has a pressing portion and a slot at both ends respectively. And bridged on a heat dissipation element, the slots at both ends protrude from both sides of the heat dissipation element respectively, and the heat dissipation element is attached to a heat source of a circuit board; the buckle posts respectively have an adjusting end and a fixed end, the adjustment end is provided with several parallel concentric circle levels, the fastening column is fixed on the circuit board through its fixed end, and the slots on each elastic fastener are corresponding to the buckle The adjusting end of a fastening post is adjusted on the level of the adjusting end, so that the heat dissipation element is attached to the heat source with uniform and proper pressure.

With the above scheme of the utility model, since at least one elastic fastener is used to span the heat dissipation element, and the two ends of the elastic fastener are respectively fastened to a fastening column, and the elastic fastener can be connected to the fastening column Therefore, the heat dissipation element can be evenly and properly pressed on a heat source, thereby increasing the heat transfer rate between the heat source and the heat dissipation element. In addition, the structure of the elastic fastener and the fastening post is simple, so it is easy to manufacture, and the assembly process does not need to spend too much time, and the adjustment process is more convenient and time-saving.

In order to better understand the purpose, features and advantages of the utility model, preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

FIG. 1 is a three-dimensional exploded schematic diagram of a screw lock fixing method of an existing heat dissipation assembly;

Fig. 2 is a three-dimensional exploded schematic diagram of the heat dissipation assembly announced in Patent No. 377849;

Fig. 3 is a three-dimensional exploded schematic view of a preferred embodiment of the present invention;

Figure 4 is a combined side view schematic diagram of a preferred embodiment of the present invention;

Fig. 5 is a combined side view schematic diagram of another preferred embodiment of the present invention.

At first, referring to shown in Fig. 3, shown in the figure is a preferred embodiment of the present utility model, and this embodiment is with the central processing unit (CPU) inside a computer as heat source 31, and the motherboard inside the computer is It is a circuit board 33, and the circuit board 33 is provided with a seat 35 at the place where the heat source 31 is erected. The structure of the seat 35 has various structures under different types and specifications, so it is only roughly shown in FIG. 3 .

A heat dissipation element 37 is arranged above the heat source 31. For convenience of explanation, the heat dissipation element 37 is only represented by a rectangular plate in the figure. In fact, several heat dissipation fins are extended at the proper position of the heat dissipation element 37. The structures of the element 37 and the aforementioned seat body 35 are not the focus of protection claimed by the utility model, so they will not be described in detail.

This embodiment includes two elastic fasteners 4 and four fastening columns 6. The two elastic fasteners 4 have the same structure in this embodiment, and both have a long and flat pressing portion 41. There is a bulge 43 at both ends, and the bulge 43 is in the shape of a semicircle in this embodiment, and a turning portion 45 extends downward from each bulge 43 and is roughly perpendicular to the elongated flat pressing portion 41. Each turning joint 45 extends vertically outwards (that is, parallel to the pressing portion 41) with a buckle portion 47, and a draw-in groove 49 is recessed on the buckle portion 47, and each draw-in groove 49 is defined by the opening. Tapering inwards is roughly half-elliptical, and the elastic fasteners 4 are generally in the shape of a letter. The pressing part 41 is used to abut against the heat dissipation element 37, so that the slots 49 at both ends of each elastic fastener 4 It protrudes from both sides of the cooling element 37, and its assembly and function will be described below.

The said fastening posts 6 respectively have an adjusting end 61 and a fixed end 63. The adjusting end 61 is provided with several levels. In this embodiment, the several levels are concentric circles parallel to each other. The column 6 is fixed on the circuit board 33 with its fixed end 63, and this fixing method belongs to the prior art, for example, screw lock or riveting can be used, and the fixed position of the fastening column 6 must be consistent with The slots 49 on each elastic fastener 4 correspond to each other, and a stopper 65 is provided on the top of the adjustment end 61, and the stopper 65 is used to prevent the slots 49 at both ends of the elastic fastener 4 from easily and completely disengaging from the adjustment. Terminal 61.

Please refer to FIG. 4 for cooperation. When assembling and adjusting in this embodiment, the four fastening columns 6 are first screwed to four predetermined positions beside the seat body 35, and these four predetermined positions are the seat body. 35 opposite sides and close to its ends respectively. However, the predetermined positions mentioned in other embodiments can be most appropriately adjusted as required, and then the two elastic fasteners 4 are abutted with their pressing parts 41 respectively. on the heat dissipation element 37, and attach the heat dissipation element 37 to the heat source 31, respectively make the slots 49 at both ends of the two elastic fasteners 4 pass over the limit blocks 65 above the corresponding fastening columns 6 and snap into the One of the several levels of the adjustment end 61, the heat dissipation element 37 is slightly positioned on the heat source 31 first, and after being assembled and positioned, the contact pressure between the heat dissipation element 37 and the heat source 31 is adjusted according to the situation. When adjusting the pressure at a certain place, you only need to gently press the bulge 43 of the elastic fastener 4 at the said place to make the card slot 49 at the said place go down according to the several levels on the adjustment end 61, and a "clack" will be issued. "The buckling sound at each level, in this embodiment, the four fastening columns 6 are mutually symmetrical and are respectively close to the four corners of the heat dissipation element 37, so when the contact pressure between the heat dissipation element 37 and the heat source 31 needs to be adjusted , can take into account the pressure of each place more comprehensively.

Pressing the bulge 43 of the nuclear elastic fastener 4 will cause the card slot 49 to buckle down according to several levels on the adjustment end 61, mainly because the card slot 49 is tapered from the outside to the inside and roughly It is half elliptical, and when the bulge 43 is pressed, the card slot 49 will slightly withdraw from the level of the original buckle, so that the part of the card slot that occupies a larger range happens to pass over the higher part between the levels. After the clamping groove 49 reaches the predetermined position, after the bulge 43 is released, the clamping groove will be clamped into the predetermined level with its smaller part, so that the contact pressure between the heat dissipation element 37 and the heat source guide can reach a relatively appropriate size. .

Please refer to Fig. 5 again, which shows another preferred embodiment of the present invention. The difference between this embodiment and the previous embodiment is that the bulges 43 at both ends of the elastic fastener 4 are roughly in the shape of Wedge-shaped instead of semicircular arc-shaped; and the adjustment end 61 of the fastening post 6 is threaded instead of parallel concentric circles, but these changes are all within the scope of the present utility model, and the same function can be obtained.

From the above, it can be clearly seen that the utility model has the following advantages:

1. When adjusting the pressure exerted by the cooling element 37 on the heat source 31, you only need to lightly press the bulge 43 of the elastic fastener 4 to be adjusted, and the slot 49 will follow the several levels on the adjustment end 61 Snap down to complete the adjustment, so the process is extremely convenient and easy.

2. The installation position of the elastic fastener 4 can be adjusted according to different usage conditions, so that the pressure exerted by the heat dissipation element 37 on the heat source 31 will not be concentrated on a certain point, so the adjustment of the pressure is uniform and comprehensive. This adjustment can not only cope with CPUs of different thicknesses, but also enable an effective pressure equalizing contact between the cooling element 37 and the heat source 31 , thereby enabling rapid and effective heat transfer.

3. The structure of the elastic fastener 4 and the fastening column 6 is simple, and the manufacture is relatively simple, because it is only necessary to simply bend a piece of material; It can be completed by providing threads at appropriate positions or concentric circles parallel to each other, thus saving time and labor.

The above description in conjunction with the accompanying drawings is only an embodiment of the utility model, and is not intended to limit the utility model; all those familiar with the art can make various other equivalent changes or equivalent replacements according to the spirit of the utility model. Both equivalent change and equivalent replacement shall fall within the protection scope of the present utility model.

Claims (7)

1. the pressure-regulating device of a heat dissipation element is characterized in that, it comprises:

At least one spring secures rail to sleeper, described spring secures rail to sleeper has a pressure section, and its two ends of what have a draw-in groove respectively, and described spring secures rail to sleeper is by its pressure section and on the described heat dissipation element of cross-over connection what, described two draw-in grooves protrude the both sides of the described heat dissipation element of what respectively;

Several snapping posts, they have an adjustable side and a stiff end respectively, described adjustable side is provided with several levels, described snapping post is to set firmly on the described circuit board of what with its stiff end, the adjustable side of the equal corresponding buckle what one snapping post of the draw-in groove on each spring secures rail to sleeper, and regulate on several levels of being provided with of the described adjustable side of what so that described heat dissipation element uniformly pressure attach on the described thermal source of what.

2. the pressure-regulating device of heat dissipation element as claimed in claim 1 is characterized in that, convexes with a protrusion respectively between described spring secures rail to sleeper what pressure section and its two ends draw-in groove.

3. the pressure-regulating device of heat dissipation element as claimed in claim 2 is characterized in that, described protrusion is for slightly being the arcuation of semicircle.

4. the pressure-regulating device of heat dissipation element as claimed in claim 2 is characterized in that, described protrusion roughly is wedge type.

5. the pressure-regulating device of heat dissipation element as claimed in claim 1 is characterized in that, whole one " Jiong " type that forms of described spring secures rail to sleeper.

6. the pressure-regulating device of heat dissipation element as claimed in claim 1 is characterized in that, several set levels of described snapping post adjustable side are screw thread.

7. the pressure-regulating device of heat dissipation element as claimed in claim 1 is characterized in that, several set levels of described snapping post adjustable side are the concentric circless for being parallel to each other.

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