TW201837312A - Heat dissipating device and swing structure thereof - Google Patents

Abstract

A heat dissipating device includes a carrier, a magnetic driver disposed on the carrier, two swing structures disposed on the carrier, and two fixing members. Each swing structure includes a blade, a positioning rivet, a frame fixed on the blade by using the positioning rivet, and a magnetic member fastened to frame and provided without any thru-hole. The two fixing members respectively fix the two blades onto two opposite sides of the carrier and respectively align the two magnetic members with the magnetic driver, so that the two magnetic members can be driven by the magnetic driver to move for swinging each blade. Thus, the heat dissipating device is provided with the frames to reduce the cost thereof and to prevent a cracking problem from occurring to each magnetic member.

Description

   Radiating device and its swing structure   

The invention relates to a heat dissipation device, in particular to a swing type heat dissipation device and a swing structure thereof.

The inventor previously proposed a heat dissipation device (Taiwan No. M529149 new patent), which can achieve rapid heat dissipation through the swing of the blade, and fix the actuating magnetic piece to the corresponding blade through positioning rivets, thereby achieving automation Equipment for mass production.

However, the above-mentioned actuating magnetic member must be formed with a hole through which a rivet passes, so that the manufacturing cost of the actuating magnetic member is greatly increased (at least 3 times the cost). Furthermore, since the actuating magnetic member (such as a magnet) is a fragile material, when the actuating magnetic member is fixed to the blade with a rivet, the problem of the actuating magnetic member is liable to be broken.

Therefore, the present inventor believes that the above-mentioned defects can be improved, and with special research and cooperation with the application of scientific principles, he finally proposes an invention with a reasonable design and effective improvement of the above-mentioned defects.

Embodiments of the present invention provide a heat dissipation device and a swing structure thereof, which can effectively improve the problems easily generated by the existing heat dissipation device.

An embodiment of the present invention discloses a heat dissipating device, including: a carrier; a magnetic drive module installed on the carrier; the magnetic drive module can be used to generate a magnetic field to form two magnetic regions with opposite magnetic properties, and The magnetic drive module can periodically and reciprocally change the magnetic properties of the two magnetic areas through the driving of a periodic power source; two swing structures are installed on the carrier; each of the swing structures Containing: a blade including a mounting end and a free end; a bracket and a positioning rivet, the bracket is fixed to the blade by the positioning rivet, and the positioning rivet is located on the mounting end and Between the free ends; and a uniformly moving magnetic member without any perforations and fixed to the bracket; and two fixing members respectively fixing the mounting ends of the two blades to the Two opposite outer sides of the carrier, and the two actuating magnetic pieces are respectively located in the two magnetic regions; wherein when the magnetic driving module generates the magnetic field , The two actuating magnetic pieces are respectively displaced by being driven by the two magnetic force regions, so that the free ends of each of the blades oscillate.

An embodiment of the present invention also discloses a swing structure of a heat dissipation device, which includes: a blade including a mounting end and a free end; at least one metal bracket and a positioning rivet, and the metal bracket is fixed to the positioning bracket through the positioning rivet. The blade, and the positioning rivet is located between the mounting end portion and the free end portion; and at least the moving magnetic piece is not formed with any perforations, and at least one of the actuating magnetic pieces is magnetically fixed to On at least one of the metal brackets; wherein an outer diameter of a contact area between the blade and the metal bracket is not greater than 1/2 of an outer diameter of the at least one actuating magnetic member.

In summary, the heat dissipation device and its swing structure disclosed in the embodiments of the present invention can be equipped with a bracket (or metal bracket) on the blade by positioning rivets, thereby avoiding the problem of cracking when the magnetic member is actuated and effectively Reduce the production cost of the heat sink (or swing structure).

Furthermore, compared with the conventional actuating magnetic member being directly fixed on the blade, the outer diameter of the contact area of the swing structure disclosed in the embodiment of the present invention through the blade and the bracket is not greater than the outer diameter of the actuating magnetic member. 1/2 times, so there is less stress concentration during the swing of the blade, and the service life of the blade is effectively increased.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention, but these descriptions and drawings are only used to illustrate the present invention, and not to make any limitation to the protection scope of the present invention. limit.

100‧‧‧Cooling device

1‧‧‧carriage

11‧‧‧ base

111‧‧‧ inside

112‧‧‧ outside

113‧‧‧face

114‧‧‧lock hole

12‧‧‧ Connection Department

2‧‧‧ Magnetic Drive Module

21‧‧‧ core

22‧‧‧ Coil

3‧‧‧ swing structure

31‧‧‧ Blade

311‧‧‧Mounting end

312‧‧‧free end

32‧‧‧ bracket (such as: metal bracket)

321‧‧‧ Containment Department

322‧‧‧Positioning Department

33‧‧‧Positioning Rivets

331‧‧‧Shaft

332‧‧‧Crimping part

34‧‧‧ Actuating Magnetic

4‧‧‧Fixed parts

41‧‧‧Press plate

42‧‧‧Rivets

D1, D2, D3 ‧‧‧ Outer diameter

FIG. 1 is a schematic perspective view of a heat sink of the present invention.

FIG. 2 is an exploded view of FIG. 1.

FIG. 3 is a schematic plan view of FIG. 1.

FIG. 4 is a schematic cross-sectional view taken along line IV-IV of FIG. 1.

FIG. 5 is a partially enlarged schematic diagram of the V portion in FIG. 4.

FIG. 6 is a schematic plan view of another aspect of the heat sink of the present invention.

FIG. 7 is an exploded perspective view of FIG. 6.

FIG. 8 is a schematic cross-sectional view of FIG. 6.

FIG. 9 is a partially enlarged schematic diagram of a portion IX in FIG. 8.

FIG. 10 is a schematic diagram of the operation of FIG. 1.

FIG. 11 is another operation schematic diagram of FIG. 1.

Please refer to FIG. 1 to FIG. 11, which are embodiments of the present invention. It should be noted that this embodiment corresponds to the related quantities and appearances mentioned in the drawings, and is only used to specifically describe the embodiments of the present invention, so that In order to understand the content of the present invention, it is not intended to limit the protection scope of the present invention.

As shown in FIG. 1 and FIG. 2, a heat sink 100 is disclosed in this embodiment, which includes a carrier 1, a magnetic drive module 2, two swing structures 3, and a plurality of fixing members 4. Wherein, the magnetic driving module 2 is installed on the carrier 1, and the two swinging structures 3 are installed on the carrier 1 through the plurality of fixing members 4 and correspond to the position of the magnetic driving module 2. The number of the fixing members 4 in this embodiment is two as an example, by which the two swinging structures 3 are fixed to the carrier 1, respectively, but the present invention is not limited to this.

It should be additionally noted that although the application of the swing structure 3 in this embodiment is matched with the above-mentioned carrier 1, the magnetic drive module 2, and the fixing member 4, the application range of the swing structure 3 is not limited to this.

Please refer to FIG. 2 to FIG. 5, the carrier 1 is preferably a structure suitable for manufacturing by injection molding. The carrier 1 includes two bases 11 and a circular shape connecting the two bases 11. A connecting portion 12 is tubular, and the two bases 11 are mirror-symmetrical to the connecting portion 12. Among them, since the structures of the two bases 11 are substantially the same, in order to facilitate understanding of this embodiment, this paragraph only describes the structure of one of the bases 11.

The base 11 includes a corresponding inner side surface 111 and an outer side surface 112, and two corresponding end surfaces 113. The top end portion of the inner side surface 111 is connected to the connecting portion 12. The shapes of the two end surfaces 113 are substantially the same, and at least one of the two end surfaces 113 is recessed to form a locking hole 114 so that the load can be carried. The piece 1 can be fixed at an arbitrary position through a locking hole 114 through a screw (not shown). Furthermore, the locking hole 114 may be a blind hole or a through hole.

The magnetic driving module 2 can be used to generate a magnetic field (not shown in the figure) to form two magnetic regions with opposite magnetic properties (not shown in the figure, which is equivalent to the adjacent left side of the magnetic driving module 2 in FIG. 3). Area and adjacent right area). Furthermore, the magnetic driving module 2 can periodically and reciprocally change the magnetic properties of the two magnetic force regions through driving by a periodic power source (not shown in the figure). The periodic power source may be a periodic square wave, a triangular wave, a sine wave, or the positive and negative half cycles of alternating current. The periodic power source of this embodiment is described by using the positive and negative half cycles of alternating current as an example, but it is not limited. herein.

In more detail, the magnetic drive module 2 of this embodiment includes a long core 21 (such as an iron core) and a coil 22. The core 21 is tightly fit through the carrier 1. In the connecting portion 12, the coil 22 is wound around the outer edge of the connecting portion 12 of the carrier 1. The coil 22 is electrically connected to the periodic power source. Therefore, when the current of the periodic power source passes through the coil 22, a magnetic field is generated between the coil 22 and the core body 21, and the two magnetic regions with opposite magnetic properties will proceed with time. Periodic magnetic reciprocation.

Since the structures of the two swing structures 3 are substantially the same in this embodiment, in order to facilitate understanding of the above-mentioned swing structures 3, the following first describes the structure of one of the swing structures 3.

The swing structure 3 includes a blade 31, a bracket 32, a positioning rivet 33, and a uniformly moving magnetic member 34. The bracket 32 is fixed to the blade 31 by the positioning rivet 33, and the actuating magnetic member 34 is (detachably) fixed to the bracket 32. Accordingly, the swing structure 3 can be provided with a bracket 32 on the blade 31 with a positioning rivet 33 to avoid the cracking problem caused by actuating the magnetic member 34 and effectively reduce the production cost of the swing structure 3.

Wherein, the blade 31 is a single rectangular sheet body and is preferably a fiberglass blade or a polyester film blade. The blade 31 includes a mounting end portion 311 and a free end portion 312 away from the mounting end portion 311. The positioning rivet 33 is located between the mounting end portion 311 and the free end portion 312 of the blade 31.

The positioning rivet 33 may be made of plastic or metal and includes a shaft portion 331 and two crimping portions 332. The two crimping portions 332 are integrally connected to two opposite end edges of the shaft portion 331, and An outer diameter of each of the crimping portions 332 is larger than an outer diameter of the shaft portion 331. The shaft portion 331 of the positioning rivet 33 is passed through the bracket 32 and the blade 31, and the two crimping portions 332 are pressed against the bracket 32 and the blade 31 respectively. Wherein, in each positioning rivet 33 in this embodiment, the shaft portion 331 and each crimping portion 332 are hollow, but the present invention is not excluded as a solid shape.

In the embodiment, the bracket 32 is described by using a metal bracket 32 as an example, and the actuating magnetic member 34 is a circular magnet, and the actuating magnetic member 34 is magnetically fixed to the above. Bracket 32. It should be noted that the actuating magnetic member 34 is a structure without any perforations, and therefore, any actuating magnetic member having a perforation is not the actuating magnetic member 34 referred to in this embodiment. In addition, in an unillustrated embodiment, the bracket 32 may also be a non-metallic bracket (such as a plastic bracket), and the actuating magnetic member 34 is fixed to the bracket 32 by means of adhesion or the like.

Further, the bracket 32 includes a groove-shaped receiving portion 321 and a positioning portion 322 extending outwardly from a peripheral edge of the receiving portion 321. A part of the positioning rivet 33 (such as the crimping portion 332) is located in the receiving portion 321, and the positioning rivet 33 presses the receiving portion 321 to the blade 31, and the positioning portion 322 is located in the receiving portion 321. The side away from the blade 31 (eg, the left side of the receiving portion 321 in FIG. 5).

Furthermore, the positioning portion 322 is slot-shaped in this embodiment, and is used to restrict the position of the actuating magnetic member 34 relative to the positioning rivet 33 (eg, the actuating magnetic member 34 is confined within the edge of the positioning portion 322 ) So that the center of the actuating magnetic member 34 substantially corresponds to the center of the positioning rivet 33, but the present invention is not limited thereto. For example, in an unillustrated embodiment, the positioning portion 322 may be a planar structure parallel to the blade 31, and the actuating magnetic member 34 is fixed to the positioning portion 322.

It should be noted that, in this embodiment, the outer diameter D1 of the contact area between the blade 31 and the bracket 32 (the accommodating portion 321) is preferably not larger than the outer diameter of the contact area between the blade 31 and the positioning rivet 33. D2 twice. Furthermore, the outer diameter D1 of the contact area between the blade 31 and the bracket 32 (the accommodating portion 321) is not greater than 1/2 (preferably 1/3) the outer diameter D3 of the actuating magnetic member 34. .

Therefore, compared with the existing actuating magnetic member directly fixed on the blade (eg, Taiwan's new patent No. M529149), the blade 31 and the bracket 32 of this embodiment have a smaller contact area, so the blade 31 In the process of swinging, there is less stress concentration, which effectively increases the service life of the blade 31.

It should be noted that the swing structure 3 shown in FIG. 1 to FIG. 5 is based on a single bracket 32 and a single actuating magnetic piece 34 as examples. Both the bracket 32 and the actuating magnetic piece 34 are facing the magnetic drive module 2, but The invention is not limited to this. For example, the bracket 32 and the actuating magnetic member 34 may both face away from the magnetic driving module 2 (not shown in the figure).

Alternatively, as shown in FIG. 6 to FIG. 9, the number of the brackets 32 (such as the metal bracket 32) and the number of the actuating magnetic members 34 of the swinging structure 3 are further limited to two each. The two brackets 32 (such as the metal bracket 32) are respectively fixed on opposite sides of the blade 31 by positioning the rivets 33, and the two actuating magnetic members 34 are fixed (magnetically) to two A bracket 32 (eg, a metal bracket 32). Furthermore, the shaft portion 331 of the positioning rivet 33 passes through the receiving portion 321 and the blade 31 of the two brackets 32, and the two crimping portions 332 are respectively located in the receiving portion 321 of the two brackets 32 and are pressed on the two载 部 32 的 架 部 32。 32 receiving section 321 of the bracket 32.

In addition, although the swing structure 3 shown in FIGS. 6 to 9 is provided with the same two brackets 32 and the same two actuating magnetic pieces 34, the present invention is not limited thereto. That is, in the embodiment not shown, the two brackets 32 may have different configurations, and the two actuating magnetic members 34 may also have different configurations.

The two fixing members 4 respectively fix the mounting end portions 311 of the two blades 31 to two opposite outer sides of the bearing member 1, and the two actuating magnetic members 34 are respectively located in two magnetic force regions. In more detail, each fixing member 4 in this embodiment includes a pressure plate 41 and two rivets 42. Each fixing member 4 and its corresponding blade 31 and base 11 will be described below. The pressing plate 41 and the bottom end of the outer surface 112 of the base 11 hold the mounting end portion 311 of the blade 31, and each rivet 42 passes through the pressing plate 41, the mounting end portion 311 of the blade 31, and the base 11 in sequence. The mounting end portion 311 of the blade 31 is fixed on the base 11 of the carrier 1. In addition, the pressing plate 41 described in this embodiment may be a hard acrylic plate or a soft rubber plate, which is not limited in the present invention.

The above is a description of the structure and connection relationship of the heat dissipation device 100 of this embodiment. According to this, when the magnetic drive module 2 generates the magnetic field, the two actuating magnetic pieces 34 are respectively subjected to the two magnetic force regions. It is driven and displaced so that the free end 312 of each blade 31 swings. Wherein, the swing directions of the two blades 31 of the heat sink 100 may be the same direction swing as shown in FIG. 10 or the reverse swing as shown in FIG. 11, which is not limited herein.

    [Technical effect of the embodiment of the present invention]    

In summary, the heat dissipation device and its swing structure disclosed in the embodiments of the present invention can be equipped with a bracket (or metal bracket) on the blade by positioning rivets, thereby avoiding the problem of cracking when the magnetic member is actuated and effectively Reduce the production cost of the heat sink (or swing structure).

Moreover, compared with the conventional actuating magnetic member being directly fixed on the blade, the outer diameter of the swinging structure of the embodiment through the contact area between the blade and the bracket is not greater than 1 / of the outer diameter of the actuating magnetic member. 2 times (or the outer diameter of the contact area between the blade and the bracket is not greater than twice the outer diameter of the contact area between the blade and the positioning rivet), so the stress concentration will not occur during the swing of the blade, which is effective To increase the life of the blade.

The above are only the preferred and feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Any equal changes and modifications made in accordance with the scope of patent application of the present invention shall fall within the protection scope of the claims of the present invention. .

Claims (10)

    A heat dissipation device includes: a carrier; a magnetic drive module installed on the carrier; the magnetic drive module can be used to generate a magnetic field to form two magnetic regions with opposite magnetic properties, and the magnetic drive module The magnetic properties of the two magnetic regions can be periodically reciprocated through the driving of a periodic power source; two swing structures are installed on the carrier; each of the swing structures includes: a blade, It includes a mounting end and a free end; a bracket and a positioning rivet, the bracket is fixed to the blade by the positioning rivet, and the positioning rivet is located at the mounting end and the free end Between; and moving magnetic parts, without any perforations, and fixed to the bracket; and two fixing parts, respectively fixing the mounting ends of the two blades to opposite sides of the carrier Two of the actuating magnetic pieces are respectively located in two of the magnetic force regions; when the magnetic drive module generates the magnetic field, the two actuating magnets The magnetic drive two areas are displaced by the member, so that the free end of each of said generated oscillating blade.         The heat dissipation device according to claim 1, wherein, in each of the swing structures, the bracket includes a groove-shaped receiving portion and a positioning portion extending outward from a peripheral edge of the receiving portion; the A part of the positioning rivet is located in the accommodating part, and the positioning rivet presses the accommodating part on the blade.         The heat dissipating device according to claim 2, wherein in each of the swinging structures, the positioning portion is slot-shaped, and is used to limit the position of at least one of the actuating magnetic members relative to the positioning rivet, so that The center of the actuating magnetic piece substantially corresponds to the center of the positioning rivet.         The heat dissipating device according to any one of claims 1 to 3, wherein, in each of the swing structures, an outer diameter of a contact area between the blade and the bracket is not larger than an outer diameter of the actuating magnetic member 1/2 times the diameter.         The heat dissipation device according to any one of claims 1 to 3, wherein in each of the swing structures, the bracket is a metal bracket, and the actuating magnetic member is magnetically fixed to the bracket.         A swing structure of a heat dissipation device includes a blade including a mounting end portion and a free end portion; at least one metal bracket and a positioning rivet, the metal bracket is fixed to the blade by the positioning rivet, and The positioning rivet is located between the mounting end portion and the free end portion; and at least one moving magnetic piece is not formed with any perforations, and at least one of the actuating magnetic pieces is magnetically fixed to at least one of the metal brackets Wherein, the outer diameter of the contact area between the blade and the metal bracket is not greater than 1/2 of the outer diameter of at least one of the actuating magnetic pieces.         The swing structure of the heat dissipation device according to claim 6, wherein at least one of the metal brackets includes a groove-shaped receiving portion and a positioning portion extending outwardly from a periphery of the receiving portion; It is partially located in the receiving portion, and the positioning rivet presses the receiving portion to the blade.         The oscillating structure of the heat dissipation device according to claim 7, wherein the positioning portion has a groove shape, and is used to restrict a position of at least one of the actuating magnetic members relative to the positioning rivet, so that at least one of the The center of the movable magnetic member substantially corresponds to the center of the positioning rivet.         The swing structure of the heat dissipation device according to claim 7, wherein an outer diameter of a contact area between the blade and the receiving portion is not greater than twice an outer diameter of a contact area between the blade and the positioning rivet.         The oscillating structure of the heat dissipation device according to any one of claims 6 to 9, wherein the number of at least one of the metal brackets and the number of at least one of the actuating magnetic pieces are each further limited to two, and two The metal brackets are respectively fixed to opposite sides of the blade by the positioning rivets, and the two actuating magnetic pieces are magnetically fixed to the two metal brackets, respectively.