JPH066966U - Heat dissipation fin - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to make the spacing between fins constant and to extend the life of the mold for molding the spacing piece on the fin. [Structure] The bending piece 2 provided on the fin 1 is bent at a base side thereof in a direction inclined or at a right angle to the fin 1, and a tip end of the bending piece 2 is bent in a direction parallel to the fin 1. It is a fin 4 for heat radiation in which the space piece 3 is provided on the fin 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fin for heat dissipation in which a fin is made of aluminum alloy or pure aluminum for industrial use (hereinafter simply referred to as "aluminum").

[0002]

[Prior art]

 As a conventional fin for heat dissipation, as shown in FIG. 5, there is a fin 13 for heat dissipation in which a fin 12 is provided with a spacing piece 12 formed by bending one portion of the fin 11 at a substantially right angle.

[0003]

[Problems to be solved by the device]

 In the conventional fin 13 for heat dissipation, when the gap piece 12 is formed by bending it while cutting it with a die, burrs (projection pieces) 14 having different sizes are formed at the tip of the gap piece 12 for each fin. Since the fins 13 are dissimilar to each other and the intervals (pitch) between the heat dissipating fins 13 are dissimilar to each other, the fins are formed in a large number of fin grooves provided at a constant interval. When the heat dissipating fins 13 are assembled and brazed, it is difficult and time-consuming to set the heat dissipating fins 13 at regular intervals as shown in FIG. In addition, since the mold is bent while cutting the fins at the same time when the spacer pieces 12 are molded, an unreasonable force is applied to the mold, which shortens the life of the mold.

This invention solves the above-mentioned problems of the conventional heat-radiating fins, keeps the distance between the fins constant, and prolongs the life of the mold for molding the spacing pieces on the fins. It is intended for.

[0005]

[Means for Solving the Problems]

 In the heat dissipating fin of this invention, the base side of the bent piece provided on the fin is bent in a direction inclined or at a right angle to the fin, and the tip end of this bent piece is bent in a direction parallel to the fin. The fins are provided with spaced pieces.

[0006]

[Action]

 In this heat dissipation fin, the burr formed at the tip of the spacing piece is parallel to the fins, so this burr does not hinder the spacing between the fins, so the fins do not interfere with each other. The spacing is made constant by the spacing pieces. Further, when forming the spacing piece on the fin for heat dissipation, first form a bending piece connected to the fin only at one place, and then bend this bending piece in an inclined direction or a right angle direction. Since the tip of the bent piece is bent in the direction parallel to the fins to form the spacing piece with the mold, the mold is not subjected to excessive force and the life of the mold is extended.

[0007]

【Example】

 Next, a heat dissipation fin of the present invention will be described with reference to the drawings showing an embodiment. As shown in FIG. 1 and FIG. 2, the bent pieces 2 are provided at a total of 8 places, that is, the upper and lower four places of the thin plate-shaped fin 1 made of aluminum. This bent piece 2 is connected to the fin 1 only at one upper part, and is cut by a mold (not shown) at the other lower part and both right and left sides. The bent piece 2 is bent by a mold in a direction in which the base side is inclined with respect to the fin 1, and the tip end of the bent piece 2 is bent by a mold in a direction substantially parallel to the fin 1, so that the fin 1 is bent. A spacing piece 3 is provided on the. In this way, the fins 4 are provided with the spacing pieces 3 on the fins 1 for heat dissipation.

As shown in FIG. 3, the heat dissipating fins 4 of this embodiment are arranged such that a large number of heat dissipating fins 4 are arranged in parallel at regular intervals by means of the spacing pieces 3 provided on the heat dissipating fins 4. The lower end of the fin 4 is brazed to a substrate (not shown) and used as a radiation fin. It should be noted that the spacing piece 3 provided on the heat radiation fin 4 is inconvenient because the spacing piece 3 will go into the recess provided with the spacing piece 3 of the adjacent heat radiation fin 4 at the same position where the adjacent strips are arranged in the same position. For example, the odd-numbered heat radiation fins 4 and the even-numbered heat radiation fins 4 are provided with the spacing pieces 3 at different positions.

In the heat dissipating fins 8 shown in FIG. 4, the heat dissipating fins 4 of the embodiment have the bent pieces 2 which are the spacing pieces 3 which are bent in the direction in which the base side is inclined with respect to the fins 1. The bent piece 6 is such that the fin 5 is provided with a spacing piece 7 whose base side is bent in a direction perpendicular to the fin 5.

[0010]

[Effect of device]

 In the fin for heat dissipation of the present invention, since the interval piece whose tip portion is bent in the direction parallel to the fin is provided on the fin, the burr formed at the tip portion of the interval piece is parallel to the fin, and therefore the burr is finned. It is possible to improve the pitch accuracy between the fins by keeping the fin-to-fin spacing constant without interfering with the control of the fin-to-fin spacing. Since the bending piece is provided by the mold and the bending piece is bent by the mold into a predetermined shape and the spacing piece is provided on the fin, the life of the mold for molding the spacing piece on the fin can be extended.

[Brief description of drawings]

FIG. 1 is a front view of the device of the present invention.

FIG. 2 is an enlarged sectional view of the same.

FIG. 3 is an enlarged cross-sectional view similarly arranged in parallel.

FIG. 4 is an enlarged sectional view of another embodiment of the present invention.

FIG. 5 is an enlarged cross-sectional view of a conventional product.

FIG. 6 is an enlarged cross-sectional view similarly arranged in parallel.

[Explanation of symbols]

 1 Fin 2 Bending Piece 3 Spacing Piece 4 Heat Dissipation Fin 5 Fin 6 Bending Piece 7 Spacing Piece 8 Heat Dissipation Fin 11 Fin 12 Spacing Piece 13 Heat Dissipation Fin 14 Burr

Claims (2)

[Scope of utility model registration request] 1. A fin is provided with a bending piece connected only at one place, the base side of the bending piece is bent in a direction inclined from the fin, and the tip end of the bending piece is parallel to the fin. A fin for heat dissipation, characterized in that a fin is provided with a spacing piece bent in a direction. 2. The heat dissipating fin according to claim 1, wherein the base side of the bent piece is bent in a direction perpendicular to the fin.