CN210091082U

CN210091082U - Non-welding close-fitting structure of radiating fin and heat conductor

Info

Publication number: CN210091082U
Application number: CN201920725958.5U
Authority: CN
Inventors: 赵以军; 陆昌; 李兆航
Original assignee: DONGGUAN TONG CHUANG ELECTRONICS TECHNOLOGY Co Ltd
Current assignee: DONGGUAN TONG CHUANG ELECTRONICS TECHNOLOGY Co Ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-02-18
Anticipated expiration: 2029-05-20

Abstract

The utility model discloses a fin and heat conductor solderless close-fitting structure, relate to the fin field, including the heat conductor, a plurality of extension grooves have been seted up on the heat conductor and tightened up the groove, establish the shape changing plate between mated extension groove and the tightening groove, it is equipped with adjacent straight type fin and Z type fin to tighten up the inslot, through using the straight type fin of Z type fin cooperation each other for the tight fitting inserts the tightening groove of heat conductor, it is fixed to utilize punching press extension groove of punching press to exempt from to weld, the groove width of heat conductor has been increased, do not need CNC processing, can direct section bar extrusion type processing, a large amount of saving processing cost, and two fin of one shot forming, the quantity of tightening up the groove has also been reduced simultaneously, and the work efficiency is improved.

Description

Non-welding close-fitting structure of radiating fin and heat conductor

Technical Field

The utility model relates to a fin field especially relates to a fin does not have welding close-fitting structure with heat conductor.

Background

The fin still is the essential spare part of computer equipment, will acquire high-efficient heat dissipation, needs to increase fin density, and density is higher, has resulted in the slot on the heat conductor intensive to the width is littleer, often needs CNC processing, and the technology is complicated, and the cost is very high, avoids CNC processing in the past, often adopts and widens the slot width, increases the mode that the tight fitting piece was punched, has nevertheless increased extra work load, needs great punching press power.

SUMMERY OF THE UTILITY MODEL

To the prior art shortcoming, the utility model discloses a fin does not have welding close-fitting structure with heat conductor has solved the too narrow too high problem of processing cost that causes of bottom plate groove width, reduces more than half work load to can reach rather than the heat transfer efficiency, also reduced the too high requirement of large-scale heat dissipation module punching press simultaneously, convenient assembling.

The concrete technical characteristics are as follows:

the utility model provides a fin and heat-conducting body solderless close-fitting structure, including the heat-conducting body, a plurality of expansion grooves and tightening groove have been seted up on the heat-conducting body, the expansion groove sets up with tightening groove adjacent in pairs, establish the shape change board between mated expansion groove and the tightening groove, the shape change board has been seted up near one side of tightening groove, heat-conducting body facial make-up is equipped with straight type fin and the Z type fin of a plurality of adjacent settings, Z type fin is by the radiating part, the portion of bending is constituteed with the tight fit portion, the portion of bending is connected to the radiating part, the radiating part is perpendicular with the portion of bending, the one end that the radiating part was kept away from to the portion of bending is connected with the tight fit portion, the tight fit portion is perpendicular with the portion of bending, the degree of depth of tightening groove is tightened up in highly matching.

Furthermore, the thickness of the straight type radiating fins and the thickness of the Z type radiating fins are both T, the width of each tightening groove is 2T +0.04 mm-2T +0.06 mm, the distance from the left end of each tightening groove to the left end of the adjacent tightening groove is D, the distance from each straight type radiating fin to the radiating part of the adjacent Z type radiating fin is P, D is 2P +2T, and the top ends of the radiating fins and the top end of the heat conductor extending out of the Z type radiating fin are equal in height.

Furthermore, one side of the top end of the deformation plate, which is close to the expansion groove, is provided with a cambered surface;

the width ratio of the tightening groove to the expansion groove is 1: 1.6-1.9, and the preferred width ratio of the tightening groove to the expansion groove is 1: 1.7.

The utility model has the advantages that: the Z-shaped radiating fins are matched with the straight radiating fins to be close-fitting parts, and the Z-shaped radiating fins are inserted into the tightening grooves of the heat conductor, the expansion grooves are punched by the punch for welding-free fixation, small tight fittings do not need to be manufactured, the problem that the groove width of the heat conductor is too narrow is avoided, CNC (computer numerical control) machining is not needed, profile extrusion can be directly carried out, machining cost is greatly saved, two radiating fins are formed at one time, the number of the tightening grooves is reduced, and working efficiency is improved; the problem that the processing cost is too high due to the fact that the width of the bottom plate groove is too narrow is solved, and the required sheet distance requirement is met through the Z shape. Meanwhile, the requirement of high stamping force of the large-scale heat dissipation module is also reduced.

Drawings

Fig. 1 is an exploded view of the present invention;

FIG. 2 is an enlarged schematic view of A of FIG. 1;

FIG. 3 is a schematic assembly view of the present invention;

FIG. 4 is a schematic view of the assembly of the present invention;

fig. 5 is a schematic view of the finished product of the present invention.

The labels in the figure are:

the heat conducting body 21, the expansion groove 22, the tightening groove 23, the deformation plate 24, the deformation groove 25, the straight radiating fin 26, the Z-shaped radiating fin 27, the radiating part 28, the bending part 29, the tight fitting part 30, the cambered surface 31 and the punch 32.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed description.

Referring to the drawings, the embodiment is a non-welding tight-fitting structure of a heat sink and a heat conductor 21, which is used for heat dissipation of an electronic instrument and solving the problem of high processing cost of the heat sink, and includes the heat conductor 21, a plurality of expansion grooves 22 and tightening grooves 23 are formed in the heat conductor 21, the expansion grooves 22 and the tightening grooves 23 are arranged in pairs and adjacent to each other, a deformation plate 24 is arranged between the paired expansion grooves 22 and tightening grooves 23, a deformation groove 25 is formed in one side of the deformation plate 24, which is close to the tightening grooves 23, and the expansion grooves 22 are impacted by a punch 32, so that the deformation plate 24 deforms in the direction of the tightening grooves 23 and compresses the tightening grooves 23.

Be equipped with a plurality of adjacent straight type fin 26 and Z type fin 27 on heat conductor 21, Z type fin 27 is whole to be "Z" type, including radiating portion 28, bending portion 29, tight fit portion 30, radiating portion 28 connects bending portion 29, radiating portion 28 is perpendicular with bending portion 29, tight fit portion 30 connects the one end that radiating portion 28 was kept away from to bending portion 29, bending portion 29 is perpendicular with tight fit portion 30, the degree of depth of tightening groove 23 is mated to the height of tight fit portion 30, tight fit portion 30 and the cooperation of straight type fin 26 bottom of Z type fin 27 are established in tightening groove 23, when tightening groove 23 shrink, fix straight type fin 26 and the firm amalgamation of Z type fin 27 on heat conductor 21.

The thickness of straight type fin 26 and Z type fin 27 is T, the initial (before not contracting) width of tightening groove 23 is 2T +0.05 millimeter, the width is 2T after tightening groove 23 tightens up, the length that straight type fin 26 and Z type fin 27 stretched out heat conductor 21 is equal, equal height on heat conductor 21 top that fin 26 top and Z type fin 27 stretched out promptly, the distance of tightening groove 23 left end to adjacent tightening groove 23 left end is D, the interval of straight type fin to heat dissipation portion 28 of adjacent Z type fin 27 is P, and have D to be 2P +2T, guarantee that the heat dissipation is even.

One side of the top end of the deformation plate 24 close to the expansion groove 22 is provided with an arc surface 31, which is beneficial for a punch 32 to impact the expansion groove 22 in the assembling process and to compress the tightening groove 23.

In the assembling process, the heat conductor 21 is processed by extrusion, and a sufficient number of expansion grooves 22 and tightening grooves 23 which are arranged in pairs are formed, the deformation plate 24 is simultaneously provided with the deformation groove 25, a straight radiating fin 26 and a Z-shaped radiating fin 27 are stacked, specifically, the bottom end of the straight radiating fin 26 and the tight fitting part 30 of the Z-shaped radiating fin 27 are aligned and placed in the tightening groove 23, the thickness of the straight radiating fin 26 and the thickness of the Z-shaped radiating fin 27 are generally the same, the fin pitch of the radiating fins (the distance from the radiating part 28 of the Z-shaped radiating fin 27 to the straight radiating fin 26) is uniform, and the distance between the radiating parts 28 of adjacent radiating fins is preferably the same. The straight fins 26 and the Z-shaped fins 27 are stacked in the number of 1:1, and then inserted into the tightening grooves 23 of the heat conductor 21 in sequence. After all the radiating fins are placed in position, the riveting punch 32 simultaneously impacts the expansion groove 22, the head of the punch 32 is small and then large, the punch is matched with the upper arc surface 31 of the deformation plate 24, after the punch 32 impacts the expansion groove 22, the deformation plate 24 deviates along the direction of the deformation groove 25 along with the stretching of the punch 32, and the tightening groove 23 is compressed, so that the straight radiating fins 26 and the Z-shaped radiating fins 27 are fastened on the heat conductor 21.

Compared with the prior art, this embodiment need not make small tight accessory, has avoided the problem that the groove width of heat conductor 21 is too narrow equally, does not need CNC processing, can direct section bar extrusion processing, and heat conductor 21 gains most groove (a plurality of expansion groove 22, tightening groove 23) through extrusion processing, practices thrift the processing cost in a large number to two fin of one shot forming have also reduced the quantity of tightening groove 23 simultaneously, have improved work efficiency.

The utility model can increase the width of the tightening groove 23 by the overlapping mode of the Z-shaped radiating fin 27 and the straight radiating fin 26; the direct extrusion forming processing of the section bar is convenient, the contact area of the Z-shaped radiating fin 27 and the heat conductor 21 is increased, and the uniform distribution of the whole radiating fin group is ensured. The deformation groove 25 is designed to facilitate deformation toward the tightening groove 23 during the riveting process so that the fin is riveted. The expansion groove 22, the tightening groove 23 and the deformation groove 25 do not need CNC machining, and can directly perform extrusion machining on the section bar, so that the machining cost is greatly saved.

The above embodiments only represent one embodiment of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A non-welding tight-fitting structure of a heat radiating fin and a heat conductor is characterized by comprising the heat conductor (21), wherein a plurality of expansion grooves (22) and tightening grooves (23) are formed in the heat conductor (21), the expansion grooves (22) and the tightening grooves (23) are arranged in pairs and are adjacent to each other, a deformation plate (24) is arranged between the paired expansion grooves (22) and the tightening grooves (23), one side, close to the tightening grooves (23), of the deformation plate (24) is provided with a deformation groove (25), the heat conductor (21) is provided with a plurality of straight heat radiating fins (26) and Z-shaped heat radiating fins (27) which are arranged in adjacent to each other, each Z-shaped heat radiating fin (27) is composed of a heat radiating part (28), a bending part (29) and a tight-fitting part (30), the heat radiating part (28) is connected with the bending part (29), the heat radiating part (28) is perpendicular to the bending part (29), one end, far away from the heat radiating part (, the tight fit part (30) is vertical to the bending part (29), the height of the tight fit part (30) is matched with the depth of the tightening groove (23), and the tight fit part (30) of the Z-shaped radiating fin (27) is matched with the bottom end of the straight radiating fin (26) and arranged in the tightening groove (23).

2. The solderless close-fitting structure of the heat radiating fin and the heat conductor (21) as claimed in claim 1, wherein the thickness of the straight heat radiating fin (26) and the thickness of the Z-shaped heat radiating fin (27) are both T, the initial width of the tightening groove (23) is 2T +0.04 mm to 2T +0.06 mm, the distance from the left end of the tightening groove (23) to the left end of the adjacent tightening groove (23) is D, the distance from the straight heat radiating fin to the heat radiating portion (28) of the adjacent Z-shaped heat radiating fin (27) is P, D is 2P +2T, and the heights of the top end of the heat radiating fin (26) and the top end of the heat conductor (21) from which the Z-shaped heat radiating fin (27) extends are equal to each other.

3. A non-welding close-fitting structure of a heat sink and a heat conductor (21) according to claim 1, wherein a cambered surface (31) is arranged on one side of the top end of the deformation plate (24) close to the expansion groove (22);

the width ratio of the tightening groove (23) to the expanding groove (22) is 1: 1.6-1.9.