Fan device

Abstract

A fan device comprises a fan frame, a fan blade and a metal annular frame. The fan frame is provided with an inner ring surface and a combination groove. A containing space is defined by the inner ring face. The combination groove is recessed inwards from the inner ring surface. The fan blades are rotatably arranged on the fan frame and located in the containing space. The metal annular frame is combined with the combination groove and located between the fan frame and the fan blades. The metal annular frame surrounds the fan blades. Therefore, not only can the structure of a mold for manufacturing the fan be simplified, but also vibration and noise generated during the operation of the fan can be reduced, so that the influence on the stability of other electronic elements can be reduced, and the performance of the fan can be improved.

Description

Technical Field

[0001] The utility model relates to a fan device, in particular to a fan device provided with a metal annular frame. Background Art

[0002] With the rapid development of technology, processor computing performance has increased significantly, generating a large amount of heat. To prevent processor damage due to high heat, fans are installed in electronic products to dissipate excess heat from the processor, allowing the processor to operate within a certain operating temperature range.

[0003] The fan frame is usually formed, for example, by plastic injection molding. Generally speaking, the mold used for injection molding will be provided with a draft angle so that the finished injection molded product can be demolded more easily. However, the mold having a draft angle will make the structure of the mold too complicated and will affect the performance of the fan. On the other hand, when the fan blades rotate, the entire fan will vibrate. In addition to generating noise, excessive fan vibration will also transmit the vibration to other electronic components, thereby affecting the stability of other electronic components. Therefore, how to reduce the structural complexity of the mold used to manufacture the fan and avoid affecting the performance of the fan, as well as reduce the vibration and noise generated when the fan is in operation to reduce the impact on the stability of other electronic components, is one of the problems that R&D personnel should solve. Utility Model Content

[0004] The utility model provides a fan device, thereby reducing the structural complexity of a mold used to manufacture the fan and avoiding affecting the performance of the fan, and reducing the vibration and noise generated during the operation of the fan, thereby reducing the impact on the stability of other electronic components.

[0005] A fan device disclosed in one embodiment of the present invention includes a fan frame, a fan blade, and a metal annular frame. The fan frame has an inner annular surface and a coupling groove. The inner annular surface surrounds a receiving space. The coupling groove is recessed inward from the inner annular surface. The fan blade is rotatably mounted on the fan frame and positioned within the receiving space. The metal annular frame engages with the coupling groove and is positioned between the fan frame and the fan blade. The metal annular frame surrounds the fan blade.

[0006] In one embodiment of the present invention, the fan frame has a first annular coupling portion, which is located in the coupling groove. The metal annular frame has a second annular coupling portion on one side close to the coupling groove. The first annular coupling portion and the second annular coupling portion are matched in concave and convex manner, and the second annular coupling portion is combined with the first annular coupling portion.

[0007] In one embodiment of the present invention, the first annular coupling portion is an annular coupling protrusion, and the second annular coupling portion is an annular coupling groove.

[0008] In one embodiment of the present invention, the fan frame has at least one first microstructure, which is located at the first annular joint, and the metal ring frame has at least one second microstructure, which is located at the second annular joint. The at least one first microstructure is concave-convex matched with the at least one second microstructure, and the at least one second microstructure is combined with the at least one first microstructure.

[0009] In one embodiment of the present invention, the at least one first microstructure is a coupling bump, and the at least one second microstructure is a coupling groove.

[0010] In one embodiment of the present invention, the at least one first microstructure has a first connecting segment and a second connecting segment, one end of the first connecting segment is connected to one end of the second connecting segment, and the first connecting segment and the second connecting segment are not parallel, the at least one second microstructure has a third connecting segment and a fourth connecting segment, one end of the third connecting segment is connected to one end of the fourth connecting segment, and the third connecting segment and the fourth connecting segment are not parallel, the first connecting segment corresponds to the third connecting segment, and the second connecting segment corresponds to the fourth connecting segment.

[0011] In one embodiment of the present invention, the number of the at least one first microstructure and the number of the at least one second microstructure are multiple, and the first microstructures are arranged side by side along the circumference of the first annular joint, and the second microstructures are arranged side by side along the circumference of the second annular joint.

[0012] In an embodiment of the present invention, at least a portion of the metal ring frame protrudes out of the coupling groove.

[0013] In one embodiment of the present invention, the metal ring frame is combined with the combining groove by insert injection molding.

[0014] In one embodiment of the present invention, the minimum distance between the fan blade and the metal annular frame is 0.3 mm.

[0015] According to the fan device of the above embodiment, the metal annular frame is coupled to the coupling groove and positioned between the fan frame and the blades, that is, the metal annular frame is exposed outside the fan frame, thereby simplifying the structure of the mold used to manufacture the fan. Furthermore, this structure can also make the inner annular surface of the fan frame smoother and reduce the distance between the blades and the metal annular frame. This can reduce the vibration and noise generated by the fan during operation, thereby reducing the impact on the stability of other electronic components. It can also increase the air volume and pressure generated by the fan device, thereby improving fan performance.

[0016] The above description of the content of the present invention and the following description of the embodiments are intended to demonstrate and explain the principles of the present invention and to provide further explanation of the scope of the patent application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective schematic diagram of a fan device according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Exploded diagram of the fan unit;

[0019] Figure 3 for Figure 1 A cross-sectional schematic diagram of a fan device.

[0020]

Explanation of symbols

[0021] 10: Fan device

[0022] 11: Fan frame

[0023] 111: Inner ring

[0024] 112: Binding groove

[0025] 113: first annular joint

[0026] 114: First microstructure

[0027] 1141: First binding section

[0028] 1142: Second combination section

[0029] 12: Fan blades

[0030] 13:Metal ring frame

[0031] 131: Second annular joint

[0032] 132: Second microstructure

[0033] 1321: The third combined segment

[0034] 1322: Fourth combination segment

[0035] D: Spacing

[0036] S: Accommodation space DETAILED DESCRIPTION

[0037] See also Figures 1 to 3 . Figure 1 2 is a perspective schematic diagram of a fan device according to an embodiment of the present invention. Figure 2 for Figure 1 Exploded diagram of the fan assembly. Figure 3 for Figure 1 A schematic cross-sectional view of a fan assembly.

[0038] The fan device 10 of this embodiment includes a fan frame 11, a fan blade 12 and a metal ring frame 13. The fan frame 11 has an inner ring surface 111 and a coupling groove 112. The inner ring surface 111 surrounds an accommodating space S. The coupling groove 112 is recessed inward from the inner ring surface 111. The fan blade 12 is rotatably arranged in the fan frame 11 and is located in the accommodating space S. The metal ring frame 13 is coupled to the coupling groove 112 by embedded injection molding, and for example, at least partially protrudes from the coupling groove 112. The so-called embedded injection molding refers to the plastic injection molding technology of integrating metal parts or plastic parts into a single part. The metal ring frame 13 is located between the fan frame 11 and the fan blade 12, and surrounds the fan blade 12, and the minimum distance D between the fan blade 12 and the metal ring frame 13 is, for example, 0.3 mm.

[0039] In detail, the fan frame 11 has a first annular joint 113 and a plurality of first microstructures 114. The first annular joint 113 is, for example, an annular joint protrusion, and is located in the joint groove 112. These first microstructures 114 are, for example, joint protrusions, and are located in the first annular joint 113. These first microstructures 114 are, for example, arranged side by side at equal distances along the circumference of the first annular joint 113. Each first microstructure 114 has a first joint segment 1141 and a second joint segment 1142. One end of the first joint segment 1141 is connected to one end of the second joint segment 1142. The first joint segment 1141 is not parallel to the second joint segment 1142. That is, these first microstructures 114 are, for example, V-shaped.

[0040] The metal ring frame 13 has a second annular coupling portion 131 and a plurality of second microstructures 132 on one side close to the coupling groove 112. The second annular coupling portion 131 is, for example, an annular coupling groove, and the first annular coupling portion 113 matches the second annular coupling portion 131 in a concave-convex manner. These second microstructures 132 are, for example, coupling grooves and are located at the second annular coupling portion 131. These second microstructures 132 are, for example, arranged side by side at equal distances along the circumference of the second annular coupling portion 131. Each second microstructure 132 has a third coupling segment 1321 and a fourth coupling segment 1322. One end of the third coupling segment 1321 is connected to one end of the fourth coupling segment 1322. The third coupling segment 1321 is not parallel to the fourth coupling segment 1322. That is, these second microstructures 132 are, for example, V-shaped.

[0041] The first microstructures 114 are matched with the second microstructures 132 in a concave-convex manner, with the first coupling section 1141 corresponding to the third coupling section 1321, and the second coupling section 1142 corresponding to the fourth coupling section 1322. The second annular coupling portion 131 is coupled to the first annular coupling portion 113, and the second microstructures 132 are coupled to the first microstructures 114. In this manner, the metal annular frame 13 is coupled to the coupling groove 112.

[0042] In this embodiment, since the metal annular frame 13 is coupled to the coupling groove 112 and is located between the fan frame 11 and the fan blades 12, that is, the metal annular frame 13 is exposed outside the fan frame 11, and the first microstructures 114 located in the coupling groove 112 are respectively coupled to the second microstructures 132 located on the side of the metal annular frame 13 away from the fan blades 12, the structure of the mold used to manufacture the fan can be simplified. In addition, the above structure can also make the inner annular surface 111 of the fan frame 11 smoother and reduce the distance between the fan blades 12 and the metal annular frame 13. In this way, the vibration and noise generated by the fan during operation can be reduced to reduce the impact on the stability of other electronic components. In addition, the air volume and air pressure generated by the fan device can be increased to improve the performance of the fan.

[0043] In this embodiment, the metal ring frame 13 is coupled to the coupling groove 112 by insert injection molding, but the present invention is not limited thereto. In other embodiments, the metal ring frame can also be coupled to the coupling groove by other methods.

[0044] In this embodiment, the metal ring frame 13 at least partially protrudes outside the coupling groove 112, but the present invention is not limited thereto. In other embodiments, the metal ring frame may not protrude outside the coupling groove. In other words, the surface of the metal ring frame may be flush with the inner surface of the fan frame.

[0045] In this embodiment, the first annular joint portion 113 is an annular joint projection, and the second annular joint portion 131 is an annular joint groove, but the present invention is not limited thereto. In other embodiments, the first annular joint portion and the second annular joint portion may be reversed. In other words, the first annular joint portion may be an annular joint groove, and the second annular joint portion may be an annular joint projection.

[0046] In this embodiment, the number of the first microstructures 114 and the number of the second microstructures 132 are both plural, but the present invention is not limited thereto. In other embodiments, the number of the first microstructures and the number of the second microstructures may also be only one.

[0047] In this embodiment, the first microstructures 114 are coupling bumps, and the second microstructures 132 are coupling grooves, but the present invention is not limited thereto. In other embodiments, the first microstructures and the second microstructures may be reversed. In other words, the first microstructures may be coupling grooves, and the second microstructures may be coupling bumps.

[0048] In this embodiment, the first microstructures 114 are arranged side by side at equal distances along the circumference of the first annular joint 113, and the second microstructures 132 are arranged side by side at equal distances along the circumference of the second annular joint 131, but the present invention is not limited thereto. In other embodiments, the first microstructures may be arranged side by side at unequal distances along the circumference of the first annular joint, the second microstructures may be arranged side by side at unequal distances along the circumference of the second annular joint, or the first microstructures and the second microstructures may be arranged in other arrangements.

[0049] According to the fan device of the above embodiment, since the metal annular frame is coupled to the coupling groove and is located between the fan frame and the fan blades, that is, the metal annular frame is exposed outside the fan frame, and the first microstructures located in the coupling groove are respectively coupled with the second microstructures located on the side of the metal annular frame away from the fan blades, the structure of the mold used to manufacture the fan can be simplified. In addition, the above structure can also make the inner annular surface of the fan frame smoother and reduce the distance between the fan blades and the metal annular frame. In this way, the vibration and noise generated by the fan during operation can be reduced to reduce the impact on the stability of other electronic components. It can also increase the air volume and air pressure generated by the fan device to improve the performance of the fan.

[0050] Although the present invention is disclosed above with reference to the aforementioned embodiments, they are not intended to limit the present invention. Anyone skilled in the art may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope defined in the claims.

Claims

1. A fan device, characterized in that: Include: A fan frame has an inner annular surface and a coupling groove, wherein the inner annular surface surrounds an accommodating space, and the coupling groove is recessed inward from the inner annular surface; a fan blade rotatably disposed on the fan frame and located in the accommodating space; as well as A metal ring frame is combined with the combining groove and is located between the fan frame and the fan blade, and the metal ring frame surrounds the fan blade.

2. The fan device according to claim 1, wherein The fan frame has a first annular coupling portion, which is located in the coupling groove. The metal annular frame has a second annular coupling portion on a side close to the coupling groove. The first annular coupling portion and the second annular coupling portion are matched in concave and convex manner, and the second annular coupling portion is coupled to the first annular coupling portion.

3. The fan device according to claim 2, wherein The first annular coupling portion is an annular coupling protrusion, and the second annular coupling portion is an annular coupling groove.

4. The fan device according to claim 2, wherein The fan frame has at least one first microstructure, which is located at the first annular joint. The metal annular frame has at least one second microstructure, which is located at the second annular joint. The at least one first microstructure is matched with the at least one second microstructure in terms of concave and convex, and the at least one second microstructure is combined with the at least one first microstructure.

5. The fan device according to claim 4, wherein The at least one first microstructure is a combining bump, and the at least one second microstructure is a combining groove.

6. The fan device according to claim 4, wherein: The at least one first microstructure has a first connecting segment and a second connecting segment, one end of the first connecting segment is connected to one end of the second connecting segment, and the first connecting segment is not parallel to the second connecting segment. The at least one second microstructure has a third connecting segment and a fourth connecting segment, one end of the third connecting segment is connected to one end of the fourth connecting segment, and the third connecting segment is not parallel to the fourth connecting segment. The first connecting segment corresponds to the third connecting segment, and the second connecting segment corresponds to the fourth connecting segment.

7. The fan device according to claim 4, wherein: The number of the at least one first microstructure and the number of the at least one second microstructure are both plural, and the first microstructures are arranged side by side along the circumference of the first annular joint portion, and the second microstructures are arranged side by side along the circumference of the second annular joint portion.

8. The fan device according to claim 1, wherein At least a portion of the metal ring frame protrudes out of the combining groove.

9. The fan device according to claim 1, wherein The metal ring frame is combined with the combining groove by embedding injection.

10. The fan device according to claim 1, wherein The minimum distance between the fan blade and the metal ring frame is 0.3 mm.

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