Fan blade mechanism

Abstract

The utility model provides a fan blade mechanism. The fan blade mechanism comprises an upper base, a lower base and a plurality of blades. The blades are arranged between the upper base and the lower base; each blade comprises a first wall surface and a second wall surface; the second wall surface is provided with a first contact part and a second contact part on the opposite side; the first contact part is in contact with the opposite second contact part; the first wall surface is provided with a hole, and the hole penetrates through the second wall surface. The second wall surface is connected with a convex column which is embedded into the hole.

Description

Technical Field

[0001] The utility model relates to a fan blade mechanism. More specifically, the utility model particularly relates to a fan blade mechanism that is convenient to manufacture. Background Art

[0002] When an electronic device or a server is in use, if the temperature is not properly controlled, unstable phenomena are likely to occur, affecting the reliability of the product. Therefore, existing electronic devices often use a fan as a heat dissipation device.

[0003] However, in existing fans, the blades of centrifugal fans are often produced by an aluminum extrusion method. And since the blades need to be placed obliquely, jigs must be used for positioning, which will greatly increase the cost and time for manufacturing the fan. Therefore, how to solve the foregoing problems has become an important issue. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fan blade mechanism to solve at least one of the above problems.

[0005] To solve the above-mentioned known problems, the utility model provides a fan blade mechanism, which includes an upper base, a lower base, and a plurality of blades. The aforementioned blades are arranged between the upper base and the lower base, and each blade includes a first wall surface and a second wall surface. The second wall surface has a first contact portion and a second contact portion on the opposite side. The first contact portion contacts the opposite second contact portion. The first wall surface has a hole, and this hole penetrates the second wall surface. The second wall surface is connected to a convex column, and this convex column is embedded in the aforementioned hole.

[0006] In some embodiments, the aforementioned convex column is substantially perpendicular to the second contact portion.

[0007] In some embodiments, the aforementioned convex column is connected to the second contact portion, and a broken line is formed between the convex column and the second contact portion. Each blade includes an upper side, a lower side, and a first side. The upper side faces the upper base, the lower side faces the lower base, the first side connects the upper side and the lower side, and the broken line is substantially perpendicular to the first side.

[0008] In some embodiments, the aforementioned first contact portion is fixed to the second contact portion by discontinuous spot welding, and a plurality of welding points are formed between the first contact portion and the second contact portion.

[0009] In some embodiments, the aforementioned welding points are arranged at equal intervals.

[0010] In some embodiments, the aforementioned second wall surface has a notch, and this notch is adjacent to the convex column.

[0011] In some embodiments, each blade includes an upper side edge facing an upper base, wherein each blade includes an upper positioning protrusion protruding from the upper side edge and entering an upper positioning hole in the upper base.

[0012] In some embodiments, each blade includes a lower side edge facing a lower base, wherein each blade includes a lower positioning protrusion protruding from the lower side edge and entering a lower positioning hole in the lower base.

[0013] In some embodiments, each blade includes an upper side edge, a lower side edge, a first side edge, and a second side edge. The upper side edge faces the upper base, the lower side edge faces the lower base, the first side edge connects the upper side edge and the lower side edge, the second side edge connects the upper side edge and the lower side edge, and the first side edge and the second side edge face the same direction.

[0014] In some embodiments, the aforementioned lower base includes a body portion and a balance portion. The body portion generally has a disc-shaped structure, and the balance portion is connected to the outer periphery of the body portion and extends in a direction away from the upper base. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a fan blade mechanism in an embodiment of the present invention.

[0016] Figure 2 is Figure 1 a cross-sectional view taken along the A-A direction in

[0017] Figure 3A is a schematic diagram of a blade in an embodiment of the present invention.

[0018] Figure 3B is a schematic diagram of a blade in an embodiment of the present invention from another perspective.

[0019] Figure 3C is a front view of a blade in an embodiment of the present invention.

[0020] Figure 3D is a top view of a blade in an embodiment of the present invention.

[0021] The reference numerals are as follows:

[0022] 100: upper base

[0023] 110: body portion

[0024] 111: central opening

[0025] 112: upper positioning hole

[0026] 120: balance portion

[0027] 200: lower base

[0028] 210: Body part

[0029] 211: Central opening

[0030] 212: Lower positioning hole

[0031] 220: Balancing part

[0032] 300: Blade

[0033] 310: First wall surface

[0034] 311: Second side

[0035] 312: First side

[0036] 313: Upper side

[0037] 314: Lower side

[0038] 315: Upper positioning protrusion

[0039] 316: Lower positioning protrusion

[0040] 317: Hole

[0041] 320: Second wall surface

[0042] 321: First contact part

[0043] 322: Second contact part

[0044] 325: Upper positioning protrusion

[0045] 326: Lower positioning protrusion

[0046] 340: Convex column

[0047] 350: Notch

[0048] M: Fan blade mechanism

[0049] P: Fold line

[0050] W: Welding point Detailed implementation manner

[0051] The following describes the fan blade mechanism of the embodiments of the present invention. However, it can be easily understood that the embodiments of the present invention provide many suitable creative concepts that can be implemented in a wide variety of specific backgrounds. The specific embodiments disclosed are only used to illustrate the use of the present invention in a specific method and are not intended to limit the scope of the present invention.

[0052] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those of ordinary skill in the art to which this disclosure belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the relevant technology and the background or context of this disclosure, and should not be interpreted in an idealized or overly formal manner, unless specifically defined herein.

[0053] Figure 1 The figure is a schematic view of a fan blade mechanism M according to an embodiment of the present utility model. The aforementioned fan blade mechanism M can be connected to an external motor, for example, and the motor can drive the fan blade mechanism M to rotate to drive gas to flow into and out of the fan blade mechanism M. In this embodiment, the fan blade mechanism M can be a centrifugal fan, and mainly includes an upper base 100, a lower base 200, and a plurality of blades 300.

[0054] Figure 2 is Figure 1 a cross-sectional view along the A-A direction in. As Figure 1 and Figure 2 shown, the upper base 100 includes a body portion 110 and a balance portion 120. The body portion 110 has a central opening 111, and its overall shape generally has a conical structure. Therefore, the portion of the body portion 110 adjacent to the central opening 111 is farther away from the lower base 200, while the portion of the body portion 110 away from the central opening 111 is closer to the lower base 200. The balance portion 120 has an annular structure, which is connected to the outer periphery of the body portion 110 and extends in a direction away from the lower base 200 (the Z-axis direction in the drawing). The balance portion 120 can be used to connect with one or more counterweights (not shown), and the aforementioned counterweights can be clamped on the balance portion 120, so that it is convenient for the user to adjust the weight balance of the fan blade mechanism M.

[0055] The lower base 200 includes a body portion 210 and a balance portion 220. The body portion 210 has a central opening 211 and generally has a disc-shaped structure. The balance portion 220 is connected to the outer periphery of the body portion 210 and extends in a direction away from the upper base 100 (the -Z-axis direction in the drawing). Similarly, the balance portion 220 can be used to connect with one or more counterweights (not shown), and the aforementioned counterweights can be clamped on the balance portion 220, so that it is convenient for the user to adjust the weight balance of the fan blade mechanism M.

[0056] Figure 3A is a schematic view of a blade 300 of the fan blade mechanism M, Figure 3B is a schematic view of the aforementioned blade 300 from another perspective, and Figure 3C and Figure 3D are the front view and top view of the aforementioned blade 300. As Figures 3A to 3DAs shown, each blade 300 may include a first wall surface 310, a second wall surface 320, an upper side edge 313, a lower side edge 314, a first side edge 312, and a second side edge 311.

[0057] The blade 300 may have a folding structure. Thus, the first wall surface 310 can be the outer surface of the blade 300, and the second wall surface 320 can be the inner surface of the blade 300. The upper side edge 313 faces the upper base 100, the lower side edge 314 faces the lower base 200, and the first side edge 312 and the second side edge 311 connect the upper side edge 313 and the lower side edge 314. Since the blade 300 has a folding structure, the first side edge 312 and the second side edge 311 can face the same direction.

[0058] In this embodiment, one or more upper positioning protrusions 315, 325 may be provided on the upper side edge 313, and one or more lower positioning protrusions 316, 326 may be provided on the lower side edge 314. Among them, the upper positioning protrusions 315, 325 may protrude from the aforementioned upper side edge 313, and the lower positioning protrusions 316, 326 may protrude from the aforementioned lower side edge 314.

[0059] A hole 317 may be formed on the first wall surface 310, and this hole 317 may penetrate the second wall surface 320.

[0060] The second wall surface 320 may have a first contact portion 321 and a second contact portion 322. The first contact portion 321 is adjacent to the first side edge 312, and the second contact portion 322 is adjacent to the second side edge 311. Therefore, the first contact portion 321 and the second contact portion 322 can be located on opposite sides of the blade 300.

[0061] When the user manufactures the blade 300, the first contact portion 321 can be fixed to the second contact portion 322 by means of discontinuous spot welding, such that the first contact portion 321 and the second contact portion 322 are in contact with each other. For example, as Figure 3C shown, after the first contact portion 321 is fixed to the second contact portion 322 by means of discontinuous spot welding, a plurality of welding points W can be formed between the first contact portion 321 and the second contact portion 322. In this embodiment, the aforementioned welding points W are arranged at equal intervals from each other, and the distance between the welding points W should be greater than the thickness of the blade 300 (i.e., the distance between the first wall surface 310 and the second wall surface 320). For example, the thickness of the blade 300 can be between 1 millimeter and 3 millimeters (e.g., 2 millimeters), and the distance between adjacent welding points W can be between 20 millimeters and 30 millimeters (e.g., 25 millimeters).

[0062] The second wall surface 320 can be further connected to at least one convex post 340 and at least one notch 350. The convex post 340 can be inserted into the hole 317 on the first wall surface 310, and the notch 350 can be adjacent to the aforementioned convex post 340. In this embodiment, the convex post 340 is substantially perpendicular to the second contact portion 322, and a fold line P can be formed between the convex post 340 and the second contact portion 322, and this fold line P can be substantially perpendicular to the first side 312 to reduce wind resistance and the influence on the air flow.

[0063] At least one of the aforementioned welding points W should be adjacent to the convex post 340 to avoid unexpected warping of the blade 300.

[0064] In addition, as Figure 3D shown, except for the first contact portion 321 and the second contact portion 322, the remaining parts of the second wall surface 320 do not contact, so a hollow space can be formed. In this way, the weight and cost of the fan blade mechanism M can be reduced, and it can be beneficial for the motor to drive the fan blade mechanism M.

[0065] In this embodiment, the blade 300 can be made of metal and can be integrally formed, but it is not limited thereto.

[0066] Please also refer to Figures 1 to 3D When assembling the aforementioned fan blade mechanism M, the blade 300 can be disposed between the upper base 100 and the lower base 200, and the blade 300 is inclined with respect to the body portion 210 of the lower base 200, that is, an acute angle can be formed between the blade 300 and the body portion 210.

[0067] The body portion 110 of the upper base 100 can have a plurality of upper positioning holes 112, and the aforementioned upper positioning holes 112 can correspond to the upper positioning convex portions 315, 325 of the blade 300. Specifically, when the blade 300 is combined with the upper base 100, the upper side 313 of the blade 300 can contact the body portion 110 of the upper base 100, and the upper positioning convex portions 315, 325 can enter the upper positioning holes 112 one by one to position the blade 300 relative to the upper base 100 at the desired position. Thereafter, the user can weld along the upper side 313 to fix the blade 300 to the upper base 100.

[0068] The body portion 210 of the lower base 200 can have a plurality of lower positioning holes 212, and the aforementioned lower positioning holes 212 can correspond to the lower positioning convex portions 316, 326 of the blade 300. Specifically, when the blade 300 is combined with the lower base 200, the lower side 314 of the blade 300 can contact the body portion 210 of the lower base 200, and the lower positioning convex portions 316, 326 can enter the lower positioning holes 212 one by one to position the blade 300 relative to the lower base 200 at the desired position. Thereafter, the user can weld along the lower side 314 to fix the blade 300 to the lower base 200.

[0069] In summary, the present utility model provides a fan blade mechanism, which includes an upper base, a lower base, and a plurality of blades. The aforesaid blades are disposed between the upper base and the lower base, and each blade includes a first wall surface and a second wall surface. The second wall surface has a first contact portion and a second contact portion on the opposite side, and the first contact portion contacts the opposite second contact portion. The first wall surface has a hole, and this hole penetrates the second wall surface. The second wall surface is connected to a convex column, and this convex column is embedded in the aforesaid hole.

[0070] Although the embodiments of the present utility model and their advantages have been disclosed as above, it should be understood that those skilled in the art can make changes, substitutions, and modifications without departing from the spirit and scope of the present utility model. In addition, the protection scope of the present utility model is not limited to the processes, machines, manufactures, compositions of matter, devices, methods, and steps in the specific embodiments described in the specification. Any person skilled in the art in the relevant technical field can understand the processes, machines, manufactures, compositions of matter, devices, methods, and steps developed currently or in the future from the disclosed content of the present utility model. As long as they can perform substantially the same functions or achieve substantially the same results in the embodiments described herein, they can be used according to the present utility model. Therefore, the protection scope of the present utility model includes the above-mentioned processes, machines, manufactures, compositions of matter, devices, methods, and steps. Additionally, each claim constitutes an individual embodiment, and the protection scope of the present utility model also includes the combination of each claim and embodiment.

[0071] Although the present utility model has been disclosed above with the foregoing several preferred embodiments, it is not intended to limit the present utility model. Those skilled in the art in the technical field to which the present utility model pertains can make some changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to that defined by the appended claims. In addition, each claim constitutes an independent embodiment, and the combinations of various claims and embodiments are all within the scope of the present utility model.

Claims

1. A fan blade mechanism, characterized in that, Comprising: An upper base; A lower base; And A plurality of blades, disposed between the upper base and the lower base, and each blade comprises: A first wall surface; and A second wall surface, having a first contact portion and a second contact portion opposite to each other, Wherein, the first contact portion contacts the second contact portion opposite thereto, Wherein, the first wall surface has a hole and the hole penetrates the second wall surface, the second wall surface is connected to a convex post, and the convex post is embedded in the hole.

2. The blade mechanism according to claim 1, characterized in that, The convex post is perpendicular to the second contact portion.

3. The blade mechanism according to claim 1, characterized in that, The convex post is connected to the second contact portion, and a broken line is formed between the convex post and the second contact portion. Each blade comprises an upper side, a lower side and a first side. The upper side faces the upper base, the lower side faces the lower base, the first side connects the upper side and the lower side, and the broken line is perpendicular to the first side.

4. The blade mechanism according to claim 1, wherein The first contact portion is fixed to the second contact portion by discontinuous spot welding, and a plurality of welding points are formed between the first contact portion and the second contact portion.

5. The blade mechanism according to claim 4, characterized in that, The plurality of said welding points are arranged at equal intervals.

6. The blade mechanism according to claim 4, characterized in that, The second wall surface has a notch, and the notch is adjacent to the convex post.

7. The blade mechanism according to claim 1, characterized in that, Each blade comprises an upper side, facing the upper base, wherein each blade comprises an upper positioning convex portion, protruding from the upper side and entering an upper positioning hole of the upper base.

8. The blade mechanism according to claim 1, wherein Each blade comprises a lower side, facing the lower base, wherein each blade comprises a lower positioning convex portion, protruding from the lower side and entering a lower positioning hole of the lower base.

9. The blade mechanism according to claim 1, wherein Each blade comprises an upper side, a lower side, a first side and a second side. The upper side faces the upper base, the lower side faces the lower base, the first side connects the upper side and the lower side, the second side connects the upper side and the lower side, and the first side and the second side face the same direction.

10. The blade mechanism according to claim 1, characterized in that, The lower base comprises a body portion and a balance portion. The body portion has a disc-shaped structure, and the balance portion is connected to the outer periphery of the body portion and extends in a direction away from the upper base.

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