CN2632853Y

CN2632853Y - Laminated assembled radiative fins

Info

Publication number: CN2632853Y
Application number: CNU032665865U
Authority: CN
Inventors: 刘义男
Original assignee: Asia Vital Components Co Ltd
Current assignee: Asia Vital Components Co Ltd
Priority date: 2003-07-02
Filing date: 2003-07-02
Publication date: 2004-08-11
Anticipated expiration: 2013-07-02

Abstract

The utility model discloses a laminated assembled radiative fin, which comprises multilayer heat sinks being inserted and connected by single heat sink; the single heat sink takes a sheet, the both sides of the sheet are bent towards each other and punched into an inward hook part, the bended part of the sheet is provided with a slot which has an outward opening corresponding with the hook part; when in mounting, the hook part of a heat sink is inserted into the slot on another heat sink, and locked in the slot by pressing the back end of the hook part, and then each two heat sinks are tightly combined together to form a multilayered combined heat sink.

Description

Stacked composite type fin

Technical field

The utility model relates to a kind of stacked composite type fin, relates in particular to a kind of microminiature groups of fins that is used for high efficiency heat radiation.

Background technology

Aluminium extruded type fin commonly used, be illustrated in figure 1 as an example, it is that bottom with aluminium extruded type fin 51 contacts a copper coin sheet 52, the another side contact CPU of copper coin sheet 52 (by Reference numeral 53 expressions), the heat that CPU53 produces is delivered to aluminium extruded type fin 51 via copper coin sheet 52, or paste a conducting strip (not shown) in the bottom of aluminium extruded type fin 51 and directly contact CPU53 again, assist the CPU53 radiating and cooling; Shortcoming that should fin commonly used is the be squeezed production method restriction of moulding of aluminium extruded type fin 51, make the sheerness of radiating fin 50 of the type that squeezes limited, can't become laminar at all, the thickness of the radiating fin 50 of each sheet is thick more than sheet metal, so, make the area of efficiently radiates heat of aluminium extruded type fin 51 of identical weight less, radiating efficiency is lower.

Because the radiating efficiency of aluminium extruded type fin 51 commonly used is low, for electronic building brick that needs the high efficiency heat radiation effect or equipment, the general radiating module that all uses sheet metal to form, as the sheet type groups of fins 60 that Figure 2 shows that the common combinations formula, it is to form with stamping forming single heat radiation thin slice 61 mutual snappings, the both sides punching press of this single heat radiation thin slice 61 forms the bending side 62 at right angle, these bending side 62 front ends are provided with snap groove 63, bending side 62 rear ends form the shape of snapping sheet 64 corresponding to snap groove 63, and the snapping sheet 64 of another single heat radiation thin slice 61 rear ends of snap groove 63 corresponding chimeric snappings of single heat radiation thin slice 61 front ends is formed sheet type groups of fins 60; Its advantage is that manner is simple and easy, but its shortcoming is:

(1) snap groove 63 is to come contact friction to engage with contacting surface with the chimeric snapping mode of snapping sheet 64, and this chimeric snapping mode can't make two heat radiation thin slices 61 connect the jail, and is loosening easily and break away from, and causes bad manufactured goods rate higher.

(2) after diel is made through for a long time a large amount of punching presses, these diel wearing and tearing, the snap groove 63 that causes the heat radiation thin slice 61 that punching press forms can not agree with snapping sheet 64 of another heat radiation thin slice 61 and connects airtight, and the disqualification rate of product is raise, and increases the cost of manufacture of product.

Again with reference to figure 3, Fig. 3 is a kind of sheet type groups of fins 70 of common combinations formula, its structural improvement as previously mentioned, it is to form with stamping forming single heat radiation thin slice 71 mutual snappings, wherein, the both sides punching press of this single heat radiation thin slice 71 forms the bending side 72 at right angle, the two ends of this heat radiation thin slice 71 vertically are provided with the snapping sheet 73 of scalariform bending, form the snap groove 74 of L shaped opening between snapping sheet 73 and the bending side 72, the L shaped opening of this snap groove 74 is corresponding to the scalariform of snapping sheet 73 bending upper end, and the snap groove 74 of snapping sheet 73 corresponding another single heat radiation thin slices 71 of chimeric snapping of single heat radiation thin slice 71 front ends is formed sheet type groups of fins 70; It has improved aforementioned fin commonly used and has become flexible and the significant problem of disengaging easily, also reduce the disqualification rate of manufactured goods, but its shortcoming is:

(1) leading section of snapping sheet 73 scalariforms bendings concaves, and makes with the chimeric snapping of L shaped opening snap groove 74 comparatively firmly, but it causes each heat radiation thin slice 71 snapping degree of difficulty each other to increase, and combination is made and is difficult for, and reduces output, and cost of manufacture is increased.

(2) only depend on the snapping sheet 73 inside elastic force of a heat radiation thin slice 71 to fasten in the snap groove 74 of another heat radiation thin slice 71, though difficult drop-off, it is easily loosening each other and degree of connecting airtight is bad, and the heat conduction that two heat radiation thin slices are 71 is not good, reduces the efficient of heat radiation.

(3) the snapping sheet 73 of this heat radiation thin slice 71 and the shape of its snap groove 74, the area of this snapping sheet 73 is difficult to dwindle on making, make the height of bending side 72 reduce restricted relatively, the distance of two heat radiation thin slices 71 is bigger, the quantity of the heat radiation thin slice 71 that the unit volume space holds can't effectively be improved, be unfavorable for the high rate of heat dissipation demand of miniaturized electronics.

Summary of the invention

The utility model results in deficiency, product disqualification rate height, combination on the conduction heat effect at present various fin commonly used and makes and be difficult for, cost of manufacture, can't bring into play the shortcoming of the conduction heat effect of the best in shape own or because of the problem on the snapping combining structure, improved, provide a kind of structure to make simple and easy, snapping firm combination, the heat conduction benefit is better, the stacked composite type fin of tool microminiature Demand Design practicality.

The utility model is a kind of stacked composite type fin, it is by the mutual chimeric fin that is fastened into multilayer of single fin, vertically bending and punching press form inside pothook to two relative edges of the fin that this is single in opposite directions, vertically bend two ends at the lamellar body of fin and be provided with buckling groove, the opening of this buckling groove is outwards corresponding to the position of pothook; During combination, the pothook of a fin is embedded the buckling groove of another fin, force in the pothook rear end then pothook is fastened in the buckling groove, per two tight snappings of fin are combined, form the composite type fin of multi-disc.

One side of the present utility model, be to provide a kind of stacked composite type fin, embed the buckling groove of another fin by pothook by a fin, forcing in the pothook rear end then is fastened in the buckling groove pothook, the closely mutual snapping of per two fin is combined, form the fin of multilayer, its snapping firm combination can not become flexible or break away from.

The utility model is to provide a kind of stacked composite type fin on the other hand, and its space structure is simple, making is easy, can enhance productivity, and the product percent of pass height can effectively reduce cost of manufacture.

One side more of the present utility model, be to provide a kind of stacked composite type fin, it only need utilize minimum edge, below about 2mm, form bending and punching press and form inside pothook and correspondence is offered buckling groove, in the design of miniaturization, have bigger elasticity.

Also one side of the present utility model, be to provide a kind of stacked composite type fin, the distance of plate body that makes per two fin is below 2mm, fin quantity in unit length and the volume is improved, radiating efficiency also improves relatively, is specially adapted to the high efficiency heat radiation of the electronic equipment of small shape.

Description of drawings

Fig. 1 is the perspective exploded view of aluminium extruded type fin commonly used;

Fig. 2 is a kind of perspective exploded view of sheet type groups of fins commonly used;

Fig. 3 is the perspective exploded view of another kind of sheet type groups of fins commonly used;

Fig. 4 is the solid combination schematic diagram of an embodiment of the utility model;

Fig. 5 is a perspective exploded view of the present utility model; And

Fig. 6 is side-looking of the present utility model and combination action schematic diagram thereof.Among the figure:

10 stacked composite type fin

20 fin

21 alar parts

22 pothooks

23 buckling grooves

51 aluminium extruded type fin

52 copper coin sheets

53CPU

60 sheet type groups of fins

61 heat radiation thin slices

62 bending sides

63 snap grooves

64 snapping sheets

70 sheet type groups of fins

71 heat radiation thin slices

72 bending sides

73 snapping sheets

74 snap grooves

Embodiment

For describing the purpose of this utility model, feature and effect in detail,, the utility model is described in detail by by in conjunction with the accompanying drawings following and specific embodiment.

Shown in Fig. 4-6, be respectively the action schematic diagram of solid combination schematic diagram, decomposing schematic representation and the side-looking combination of the utility model embodiment, the utility model is a kind of stacked composite type fin 10, and it is the fin that is formed multilayer by single fin 20 mutual chimeric snappings; It is characterized in that:

This single fin 20 is the plate body substantially, and two relative edges of plate body are bent into alar part 21 in opposite directions, and the angle of these alar part 21 bendings is the vertical configuration of 90 degree in the present embodiment; The both sides on these alar part 21 tops strike out inside pothook 22 respectively, the bottom of pothook 22 is connected with alar part 21, alar part 21 bottoms are provided with buckling groove 23 with the vertical junction of fin 20 plate bodies, and the opening of this buckling groove 23 is outwards corresponding to the position of pothook 22.

When making up, pothook on the alar part 21 of one fin 20 22 is embedded the buckling groove 23 of another fin 20, force in pothook 22 rear ends then, with reference to figure 6, pothook 22 is fastened in the buckling groove 23, and the inboard of pothook 22 is connected on the plate body inner surface of fin 20, and per two fin, 20 mutually tight snappings are combined, and forms the composite type fin of multi-disc.

The utility model has great elasticity in the design of miniaturization, on concrete the enforcement, it only need utilize minimum edge this alar part that is bent to form 21, below the highly about 2mm of the alar part 21 of this bending, utilizes this alar part 21 to come punching press to form inside pothook 22 and correspondence is offered buckling groove 23.

In addition, because the alar part 21 of bending can be below 2mm, the distance that makes per two fin 20 plate bodies is below 2mm, but the area minimization of the height of its snapping and fin 20 plate bodies, fin 20 quantity in unit length and the volume are improved, radiating efficiency also improves relatively, is specially adapted to the high efficiency heat radiation of the electronic equipment of small shape.

Below the utility model is done one and describe in detail, but the above only is preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented.Promptly the equalization of doing in the utility model application range changes and modifies etc., all should belong in the claimed scope of patent of the present utility model.

Claims

1. stacked composite type fin, it is the fin that is formed multilayer by the mutual chimeric snapping of single fin; It is characterized in that:

This single fin is the plate body substantially, and two relative edges of plate body are bent in opposite directions and form pothook respectively in both sides, and the bending place of plate body is provided with buckling groove, and this buckling groove is corresponding to the position of pothook;

When making up, the pothook of a fin is embedded the buckling groove of another fin, force in the pothook rear end then pothook is fastened in the buckling groove, per two tight snappings of fin are combined, form the composite type fin of multi-disc.

2. stacked composite type fin as claimed in claim 1 is characterized in that two relative edges of this plate body bend in opposite directions, and the angle of this bending is 90 degree.

3. stacked composite type fin as claimed in claim 1, the height of two relative edges bending that it is characterized in that this plate body is less than 2mm.

4. stacked composite type fin as claimed in claim 1 is characterized in that the opening of this pothook is inside, and the opening of this buckling groove is outwards corresponding to the inside pothook of opening.

5. stacked composite type fin as claimed in claim 1, two relative edges that it is characterized in that this plate body are bent into alar part in opposite directions, the both sides on this alar part top strike out inside pothook respectively, the bottom of this pothook is connected with alar part, and the alar part bottom is provided with buckling groove with the vertical junction of plate body.

6. stacked composite type fin as claimed in claim 1, it is characterized in that per two fin snappings combination after, the inboard of this pothook is connected on the plate body inner surface of fin.