TWM474326U - Integrated structure of thin type heat dissipation fan frame - Google Patents

Description

Integrated structure of thin heat-dissipating fan fan frame

The present invention relates to an integrated structure, and more particularly to an integrated structure for a thin heat-dissipating fan fan frame.

Electrical products generate heat when used, and fans provide the need for heat dissipation. In response to the increasingly thin market demand for fans, the thickness of the fan has gradually decreased from 10mm to 4mm, and even to below 3mm. This thickness has exceeded the range of general plastic injection capabilities. Therefore, in the case of a fan frame of a generally thin heat-dissipating fan, the bottom plate is usually a metal base plate.

The fan frame of the thin cooling fan generally includes a metal bottom plate, a bearing, a middle pipe and a flow channel retaining wall.

Please refer to FIG. 1 and FIG. 2 , which are schematic cross-sectional views of a conventional thin heat dissipation fan frame and an assembly manner thereof. The conventional thin fan frame 600 includes a metal base plate 610, a bearing 620, a copper intermediate tube 630, a first-order track wall 640, and a retaining ring 650. Wherein, the central portion of the metal base plate 610 is provided with a coupling hole 611; the copper intermediate tube 630 is made of copper material, and the bottom end thereof is riveted to the coupling hole 611 of the metal base plate 610; the bearing 620 is pressed into the copper tube 630. In the diameter; the fixing ring 650 is also pressed into the inner diameter of the copper tube 630 to fix the end surface of the bearing 620 to prevent the bearing from falling off; The flow channel retaining wall 640 is formed by forming a flow path with a thin metal plate and riveting the outer periphery of the metal base plate 610, or forming a flow path by plastic injection to adhere to the outer periphery of the metal base plate 610.

However, the structure of the thin heat-dissipating fan frame and its assembly method have the following obvious shortcomings: (1) The copper tube 630 must be made of copper material first, which increases manufacturing man-hours and costs; The copper tube 630 is combined with the joint hole 611 of the metal base plate 610 by riveting, and the riveting combines the risk of the connection instability and the inclination of the copper tube 630; (3) the bearing 620 is extruded into the copper by extrusion. In the middle tube 630, the bearing 620 has the risk of poor extrusion and deformation; (3) the bearing 620 is squeezed into the copper tube 630 and there is a risk of loosening, and must be supplemented by the fixing ring 650; (4), flow The road retaining wall 640 is separately manufactured and then bonded or welded to the metal base plate 610; (5) The above reasons cause the conventional thin heat-dissipating fan frame to be time-consuming, costly, and high in product defect rate.

The present invention provides an integrated structure of a thin, heat-dissipating fan frame that is structurally stable and precise.

According to an aspect of the present invention, an integrated structure of a thin heat dissipation fan frame is provided, comprising: a metal bottom plate having an annular bearing portion at a central portion thereof and a plurality of peripheral portions adjacent to the annular bearing portion a bearing having a ring body having a shaft hole in the center thereof, the ring body having a bottom end portion and a top end portion opposite to each other, the bottom end portion abutting against the annular bearing of the metal bottom plate Part, the top part has a phase a continuous body segment and a diagonal shoulder segment; a plastic intermediate tube integrally molded with a plurality of coupling holes of the metal base plate and encased in an outer circumference of the ring body of the bearing; and a plastic flow channel retaining wall The integral molding is bonded to the outer circumference of the metal base plate. In this way, an integrated structure of the metal base plate, the bearing, the plastic middle tube and the plastic flow channel retaining wall is integrally formed, and the combination between the components is stable and precise.

100‧‧‧Metal backplane

110‧‧‧Ring bearing

120‧‧‧bond hole

200‧‧‧ bearing

210‧‧‧Act

211‧‧‧ bottom end

212‧‧‧Top part

213‧‧‧ Straight body

214‧‧‧Slant shoulder

220‧‧‧Axis hole

300‧‧‧Plastic tube

400‧‧‧Plastic flow channel retaining wall

500‧‧‧Mold

510‧‧‧Metal floor accommodation

520‧‧‧ bearing housing

530‧‧‧中管注模室室

540‧‧‧Flower retaining wall injection molding chamber

FIG. 1 is a schematic cross-sectional view showing a conventional thin heat dissipation fan frame.

Fig. 2 is an exploded view showing the conventional thin heat dissipation fan frame shown in Fig. 1, and showing a schematic view of the assembly thereof.

3 is a cross-sectional view showing an integrated structure of a thin heat dissipation fan frame according to an embodiment of the present invention.

Fig. 4 is a schematic view showing the manufacturing process of the integrated structure of the thin heat-dissipating fan frame shown in Fig. 3, and showing the relationship between the mold and the frame-integrated structure.

FIG. 5 is a flow chart showing the manufacturing of the integrated structure of the thin heat dissipation fan frame according to an embodiment of the present invention.

The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of embodiments with reference to the drawings.

Referring to FIG. 3 , the integrated structure of the thin heat dissipation fan frame according to an embodiment of the present invention includes a metal base plate 100 , a bearing 200 , a plastic intermediate tube 300 and a plastic flow channel retaining wall 400 .

The metal base plate 100 has an annular bearing portion 110 at a central portion thereof and a plurality of coupling holes 120 adjacent to the periphery of the annular bearing portion.

The bearing 200 is, for example, an oil-containing powder bearing having a ring body 210 having a shaft hole 220 at the center thereof, and the ring body 210 has a bottom end portion 211 and a top end portion 212 at opposite ends, wherein the bottom end portion The 211 abuts against the annular bearing portion 110 of the metal base plate 100, and the top end portion 212 has a continuous straight body portion 213 and a diagonal shoulder portion 214.

The plastic intermediate tube 300 is integrally molded and filled in a plurality of coupling holes 120 of the metal base plate 100 and is enclosed on the outer circumference of the ring body 210 of the bearing 200. The plastic flow channel retaining wall 400 is also integrally formed to be bonded to the outer periphery of the metal base plate 100. The meandering configuration of the straight body section 213 and the oblique shoulder section 214 of the outer circumference of the bearing body 210 can improve the bonding strength between the plastic tube 300 and the bearing 200. In addition, since the bottom end portion 211 of the bearing 200 abuts against the annular bearing portion 110 of the metal base plate 100, the bearing 200 can be prevented from falling off from the bottom end direction; further, since the top end portion 212 of the bearing 200 has the inclined shoulder portion 214, Moreover, it is enclosed by the plastic tube 300, so that the bearing 200 can be prevented from falling off from the tip end direction.

According to the integrated structure of the thin heat dissipation fan frame of the embodiment of the present invention, the plastic intermediate tube 300 is integrally molded and filled into the plurality of coupling holes 120 of the metal base plate 100 and is enclosed by the ring body 210 of the bearing 200. The outer periphery of the plastic channel retaining wall 400 is also integrally formed on the metal base plate The outer perimeter of 100. In this way, an integrated structure of the metal base plate, the bearing, the plastic middle tube and the plastic flow channel retaining wall is integrally formed, and the combination between the components is stable and precise.

Please refer to FIG. 4 and FIG. 5 , which are respectively a schematic view showing a manufacturing mold of a thin structure of a thin heat dissipation fan frame according to an embodiment of the present invention, and a manufacturing flow chart for explaining the manufacturing of the integrated structure. The manufacturing step is as follows: (1) preparing a metal base plate 100 having a plurality of joint holes 120 (S1); (2) preparing a bearing 200, the top end portion 212 of the bearing having a phase a continuous body segment 213 and a diagonal shoulder segment 214 (S2); (3), a mold 500 having a metal bottom plate receiving portion 510, a bearing receiving portion 520 and a middle portion a tube injection molding chamber 530, and a first-class ballast wall injection molding chamber 540 (S3); (4), the metal substrate 100 and the bearing 200 are respectively accommodated in the metal substrate receiving portion 510 of the mold 500 and the bearing a portion 520 (S4); (5) pouring the molten plastic into the middle tube injection molding chamber 530 of the mold 500 and the flow channel retaining wall injection molding chamber 540 (S5); (6) after the molten plastic is solidified The mold 500 is demolded, and the solidified plastics respectively form a plastic intermediate tube 300 and a plastic flow channel retaining wall 400, and the plastic tube is filled in The plurality of coupling holes 120 of the metal base plate 100 are enclosed on the outer circumference of the bearing 200, and the plastic flow channel retaining wall 400 is coupled to the outer periphery of the metal base plate 100 to form a fan frame of the heat dissipation fan (S6).

Therefore, when the plastic injection molding of the plastic tube 300 and the plastic flow channel retaining wall 400 is completed, the plastic intermediate tube 300 and the plastic flow channel retaining wall 400 and the metal base plate 100 and the bearing 200 are simultaneously integrated. The combination, while the integration of a thin heat-dissipating fan fan frame is completed. its Easy to manufacture, saving assembly time, equipment and manpower, and the fan frame structure is stable, improving the shortcomings of the conventional thin heat-dissipating fan frame, and avoiding the conventional thin-shaped cooling fan frame fitting assembly method Due to the shortcomings of bearing deformation caused by strong extrusion, the accuracy of the bearing is ensured and the quality of the product is improved.

Although the present invention is disclosed by the above embodiments, it is not intended to limit the present invention, and the skilled person can understand various modifications and refinements without departing from the spirit and scope of the present invention. It is subject to the definition of the scope of the patent application attached.

100‧‧‧Metal backplane

110‧‧‧Ring bearing

120‧‧‧bond hole

200‧‧‧ bearing

210‧‧‧Act

211‧‧‧ bottom end

212‧‧‧Top part

213‧‧‧ Straight section

214‧‧‧ oblique shoulder

220‧‧‧Axis hole

300‧‧‧Plastic tube

400‧‧‧Plastic flow channel retaining wall

Claims (1)

An integrated structure of a thin heat dissipation fan frame comprises: a metal bottom plate having an annular bearing portion at a central portion thereof and a plurality of coupling holes adjacent to a periphery of the annular bearing portion; a bearing having a ring body The center of the ring body has a shaft hole, and the ring body has a bottom end portion and a top end portion opposite to each other, the bottom end portion abuts against the annular bearing portion of the metal bottom plate, and the top end portion has a continuous connection a plastic body tube, an integral plastic tube filled in a plurality of joint holes of the metal bottom plate and wrapped around the outer circumference of the ring body of the bearing; and a plastic flow channel retaining wall, integrally formed The combination is bonded to the outer circumference of the metal base plate.