JPS58193094A - Radiator fin - Google Patents

Abstract

PURPOSE:To obtain the fin of a high rate of heat radiation easily at low cost by forming a wide fin substrate section continuing to separately independent or multiply-connected one ends fitted to the grooves of a substrate in cylindrical, semicylindrical or square cylindrical structure. CONSTITUTION:Plane-shaped plates projected by slitting or slotting the wide fin substrate sections 7 from both sides of the boundary sections of both the multi- throw type one end sides 6 of the fin and the substrate sections 7 at proper fin fitting intervals from the one end sides 6 are punched and molded from an aluminum plate or an aluminum alloy plate. When the fin substrate sections 7 are rounded, cylindrical radiant sections 8 can be formed, when the fin substrate sections 7 are rounded to U-shaped forms or semicircles, semicylindrical radiant sections 8' and when the fin substrate sections 7 are bent triangularly, triangular cylindrical radiant sections 8'' respectively. With the multi-throw type cylindrical or semicylindrical fins obtained in this manner, the multi-throw type one end sides are fitted into the grooves 3 of the substrate 2, and surface sections adjacent to the grooves 3 of the substrate 2 are caulked through a normal method, thus cualking and combining the multi-throw type fins to the substrate at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel cylindrical or semi-cylindrical fin in a heat sink in which the fin is fitted into a groove provided in a substrate and is caulked to the substrate. As a heatsink, fins are placed on the board at very narrow intervals, for example, about 2 mm apart, and thin fins of around 0.3 mm in thickness are inserted into grooves provided on the board, and long grooves corresponding to the chevron-shaped tips and fins are formed. There is a known method of caulking the fins by crushing the protrusions of the board with a spacer plate.
No. 65), these fins are generally Japanese flat plate-shaped or strip-shaped fins.

The present invention provides a cylindrical or semi-cylindrical fin structure with a high heat release rate, and the cylindrical or semi-cylindrical fins are connected to #lK of the substrate and are connected to each other individually or in multiple series. The wide fin substrate portion following -411 in the equation can be bent or rolled into a cylindrical, semi-cylindrical or rectangular cylindrical shape.

That is, the fins of the present invention are individually independent and in the case of a nine-unit type, KFi
For thin plate strength, each battledore-shaped original board is press-cutted, and the wide base plate part is rolled into a pipe shape to form a heat dissipation part. A wide fin base plate is disposed at predetermined intervals from one end side, and a fixed-shaped original plate is press-punched.In the same manner, it is possible to easily and inexpensively provide a pipe-shaped fin with a high heat dissipation rate. .

It goes without saying that the fins mentioned above can be attached not only to one side of the board, but also to both sides.

Embodiment 1 The present invention is illustrated in the drawings below.
1) consists of a narrow portion (4), a wide substrate portion (1-b), and a tapered portion (1-e) in between. The length of the narrow width part (1-4) may be formed to be somewhat longer than the length of fitting into the groove (3) of the substrate C) in Fig. 3 to which it is fitted and caulked. .

The above-mentioned battledore-shaped original plate α) is made by rolling the wide drawstring plate part (1-b) into a notch shape from the left and right sides as shown in Figure 2.
6G) C wide substrate portion (
1-b) is rolled up into a pipe-shaped heat dissipation part 0). The above pipe-shaped fin is shown on the substrate C2) as shown in Figure 3.
By fitting the narrow part (4) into the groove (3) provided in the groove, and crushing the groove part, the narrow part (1-IL) becomes
) within ρ can be combined.

All (3) in the above example is 4 with respect to the plane perpendicular to the substrate (2).
Since the cut is formed diagonally at an angle of 5° or more, the above pipe-like fin has a narrow part (1-a).
) may be fitted into the corner [(the bent tip is in groove 0) along the insertion depth level into the groove (3) and caulked as described above.

Example λ In contrast to the single type fin of Example 1, this example shows a double type or more multiple type (double type) fin.

In Figures 4 to 6, the multiple part (6) is the -4 of the fin that fits into #(3) of the board (2) as shown in Figure 7.
141 is a multiple type, but this is the same fli (
3) The entire fins attached to the fins may be connected in a continuous manner, or may be connected in multiple ways with two or more fins.

From this multiple fin type-4@(6), a wide fin board part (7) is made by making cuts or incisions from both sides of the boundary between the two (6) and (7) at an appropriate fin mounting interval. If a planar shape is punched and formed from an aluminum plate or an aluminum alloy plate and the fin board part (7) is rolled up as shown in Fig. 4, it becomes a cylindrical heat dissipation part (8), and the fin board part as shown in Fig. 5 is formed. If the part (7) is rolled into a U-shape or a semicircle, it becomes a semi-cylindrical heat dissipating part (8'), and if the fin board part (7) is bent into a triangular shape as shown in Figure 6, it becomes a triangular part. The multiple cylindrical or semi-cylindrical fins obtained in this way can be formed on each of the cylindrical heat dissipating parts (s''), as shown in FIG. Fit into the groove (3) of C),
By approaching the groove (3) of the board (2) and caulking the skin surface part according to the usual method, the multiple fins are attached to the board at the same time.
It is difficult to combine.

One end side of the fin (6) [The small hole (9) is set in the board when the fin is caulked to the board.
The fillet bites in and serves to increase the ability of the fin to come out of the board.

This example has the advantage that multiple fins with predetermined fin mounting intervals can be simultaneously and precisely connected in the groove of the substrate.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a battledore-shaped original plate of a fin showing Embodiment 1 of the present invention, FIG. 2 is a perspective view of a pipe-shaped fin formed from the original plate of FIG. 1, and FIG. 3 is an embodiment of the present invention. FIG. 2 is an explanatory diagram of a heat radiator formed by tightly coupling fins to a substrate. 4 to 6 are illustrative views of the multiple fins according to the second embodiment, and FIG. 7 is an f+ view showing the attachment state 11Af of the above multiple fins to the substrate.・・・・・・
・・・・・・・・・・・・Hago plate-like original plate 1-a...
・・・・・・・・・・・・Narrow width part 1-b・・・・・・
......Wide fin board section 2...
・・・・・・・・・−・・・・・・Substrate 3・・・・・・・
・・・・・・・・・・・・・・・Groove 4・・・・・・・・・
・−・・・・・・・・・Pipe-shaped heat dissipation part 6・−・・・
・・・・・・・・・・・・・・・Multiple part 7・・・・・・
・・・・・・・・・・・・・・・・Wide fin board part 8.8', 8"---・Heat dissipation part

Claims (2)

[Claims] (1) In the fin of a heatsink, in which one end of the fin is fitted into a groove provided in the substrate and the fins are caulked together, the wide fin substrate portion continuing to the one end of the fin that fits into the brocade is formed into a cylindrical or It was formed into a semi-cylindrical heat dissipation part! # Signature fin. (2) In the fins of the heatsink that fit the -y′iA of the grooves and C fins provided on the board and caulk them together, -4- of the plurality of fins that fit into the above grooves are -y A fin characterized in that a wide fin substrate part following Toshiko-4- is formed into a cylindrical or semi-cylindrical heat dissipation part.