Combined fan blade structure

Abstract

The utility model discloses a combined fan blade structure, include: cover, a plurality of fan blade and ring frame, the cover has a bottom and a plurality of first snap -together parts, a plurality of first snap -together parts protrude on the bottom of cover and ring set up on the bottom, two first snap -together parts between adjacent have a gap, every fan blade has the second snap -together part, and the second snap -together part is installed in the gap and is snapped together in the first snap -together part, and the ring frame is installed on the bottom of cover and is matched with the first snap -together part and clamps the second snap -together part.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and in particular to a combined fan blade structure for a fan. Background Technology

[0002] In existing technologies, fan blades are mostly integrally molded onto the hub. Therefore, when producing fans with different numbers of blades, it is necessary to change the mold for processing, which increases manufacturing costs. At the same time, the existing split-type fan blades have a small contact area with the hub and cannot form a stable connection. In addition, because the fan blades are mostly integrally molded onto the hub, this integral processing method makes the hub and fan blades the same material, so it is impossible to use the material to suppress or reduce the vibration generated during fan operation.

[0003] Therefore, it is necessary to provide a combined fan blade structure for fans to solve the above-mentioned technical problems, which is an urgent issue to be addressed. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a combined fan blade structure, comprising:

[0005] The cover has a bottom surface and a plurality of first engaging parts, the plurality of first engaging parts protruding from the bottom surface of the cover and surrounding the bottom surface, and a gap between two adjacent first engaging parts.

[0006] Multiple fan blades, each of the fan blades having a second engaging portion, the second engaging portion being installed in the gap and engaging with the first engaging portion;

[0007] A ring frame is installed on the bottom surface of the cover and engages with the first engaging part to clamp the second engaging part.

[0008] In the above-described combined fan blade structure, each of the first engaging portions has an inner T-shaped structure on its side, and each of the second engaging portions has an outer T-shaped structure on its side. The inner T-shaped structure and the outer T-shaped structure cooperate to engage the second engaging portion with the first engaging portion.

[0009] In the above-described combined fan blade structure, each fan blade further comprises a fan blade body, which is connected to the second engaging portion, and each of the second engaging portions is flat and has an arc.

[0010] In the above-described combined fan blade structure, a positioning post is provided on the top surface of each of the second engaging parts, and a plurality of positioning holes are provided on the bottom surface of the cover. Each positioning hole is located in the gap, and the positioning post is inserted into the positioning hole accordingly.

[0011] In the above-described combined fan blade structure, each of the second engaging parts has a boss on the upper part of its side surface. The boss protrudes from the side surface of the second engaging part and is connected to the outer T-shaped structure. When the second engaging part engages with the first engaging part, the boss is attached to the bottom surface of the first engaging part.

[0012] The aforementioned combined fan blade structure further includes a locking fastener. Each of the first engaging portions has a connector, which protrudes from the bottom surface of the first engaging portion. The locking fastener is connected to the connector to press the two opposing protrusions against the bottom surface of the first engaging portion.

[0013] In the above-described combined fan blade structure, each of the locking components includes a locking part and a pressing part. The pressing part is connected to the locking part, and at least a portion of the locking part is inserted into the connector. The pressing part presses the boss against the bottom surface of the first engaging part. The bottom surface of the boss has a first clearance part that avoids the pressing part, and the side surface of the boss has a second clearance part that avoids the connector.

[0014] In the aforementioned combined fan blade structure, the cover body further includes a main shaft seat and a main shaft. The main shaft seat protrudes from the bottom surface of the cover body, and the main shaft is mounted on the main shaft seat.

[0015] In the aforementioned combined fan blade structure, the cover and the fan blades are made of different materials.

[0016] In the aforementioned combined fan blade structure, the cover is a one-piece molded structure.

[0017] Compared with related technologies, the present invention provides the following beneficial effects:

[0018] 1. The combined fan blade structure of this utility model has a simple and convenient fixing method. The outer T-structure of the fan blade and the inner T-structure of the cover are subjected to force by the outer circle of the ring frame, forming a sandwich fixing structure, which makes the connection between the fan blade and the cover more stable.

[0019] 2. The fan blades and the cover can be made of two different materials at the same time, so the difference in material density can be used to suppress and reduce the vibration generated when the fan is running.

[0020] 3. Modular blades with high compatibility. For example, if there are two types of fan blades, but with different numbers of blades, such as 7 blades and 9 blades, when combining them, you only need to change the cover and then combine the corresponding number of blades. Attached Figure Description

[0021] Unless otherwise stated, the drawings illustrate the appearance of the novel object described in this utility model. Referring to the drawings, where the same component symbols denote similar parts in multiple views, examples of multiple liquid cooling systems, cooling circuits, and flexible tubes incorporating the principles currently disclosed are illustrated by way of example rather than limitation.

[0022] Figure 1 This is a three-dimensional schematic diagram of the combined fan blade structure of this utility model from one perspective.

[0023] Figure 2 This is a three-dimensional schematic diagram of the combined fan blade structure of this utility model from another perspective.

[0024] Figure 3 This is an exploded view of the combined fan blade structure of this utility model.

[0025] Figure 4 This is a schematic diagram of the fan blade of this utility model from one perspective.

[0026] Figure 5 This is a structural schematic diagram of the fan blade of this utility model from another perspective.

[0027] The attached figures are labeled as follows:

[0028] Modular fan blade structure: 1;

[0029] Cover: 11;

[0030] Bottom surface of the cover: S1;

[0031] First card assembly: K1;

[0032] Inner T-shaped structure: 111;

[0033] The bottom surface of the first engaging part: S2;

[0034] Connector: 112;

[0035] Connection hole: 1121;

[0036] Positioning hole: 113;

[0037] Gap: H;

[0038] Spindle mount: 114;

[0039] Spindle: 115;

[0040] Fan blades: 12;

[0041] Second card section: K2;

[0042] External T-shaped structure: 121;

[0043] Top surface of the second locking part K2: S3;

[0044] Boss: T1;

[0045] First avoidance section: B1;

[0046] Second avoidance section: B2;

[0047] Fan blade body: 122;

[0048] Positioning post: 123;

[0049] Ring 13;

[0050] Lock firmware 14;

[0051] Locking part 141;

[0052] Pressure section 142. Detailed Implementation

[0053] Please refer to Figures 1-5 , Figure 1 This is a three-dimensional schematic diagram of the combined fan blade structure of this utility model from one perspective. Figure 2 This is a three-dimensional schematic diagram of the combined fan blade structure of this utility model from another perspective; Figure 3 This is an exploded view of the combined fan blade structure of this utility model; Figure 4 This is a schematic diagram of the fan blade of this utility model from one perspective; Figure 5 This is a structural schematic diagram of the fan blade of this utility model from another perspective. (See diagram below.) Figures 1-5 As shown, a combined fan blade structure 1 of this utility model includes: a cover body 11, a plurality of fan blades 12, and a ring frame 13. The cover body 11 has a bottom surface S1 and a plurality of first engaging portions K1. The plurality of first engaging portions K1 protrude from the bottom surface S1 of the cover body 11 and are arranged around the bottom surface S1. There is a gap H between two adjacent first engaging portions K1. Each fan blade 12 has a second engaging portion K2. The second engaging portion K2 is installed in the gap H and engages with the first engaging portion K1. The ring frame 13 is installed on the bottom surface S1 of the cover body 11 and cooperates with the first engaging portion K1 to clamp the second engaging portion K2.

[0054] Each of the first engaging portions K1 has an inner T-shaped structure 111 on its side, and each of the second engaging portions K2 has an outer T-shaped structure 121 on its side. The inner T-shaped structure 111 and the outer T-shaped structure 121 cooperate to make the second engaging portion K2 engage with the first engaging portion K1.

[0055] Specifically, each of the two sides of the second engaging part K2 has an outer T-shaped structure 121 arranged opposite to each other, and each of the two sides of the first engaging part K1 also has an inner T-shaped structure 111 arranged opposite to each other. By having the two inner T-shaped structures 111 arranged opposite to each other simultaneously engage the two outer T-shaped structures 121 of a fan blade 12, and then pressing in the ring frame 13, the sides of the outer T-shaped structure T2 and the inner T-shaped structure T1 are contacted by the outer side of the ring frame 13 to form a sandwich-like pressing structure, thereby providing a more stable connection between the fan blade and the cover.

[0056] It should be noted that, in this embodiment, the material of the ring frame can be metal, plastic, etc., and iron is the preferred material in this embodiment.

[0057] Furthermore, each of the fan blades 12 also has a fan blade body 122, which is connected to the second engaging portion K2. Each of the second engaging portions K2 is flat and curved. The upper part of the side surface of each of the second engaging portions K2 has a boss T1, which protrudes from the side surface of the second engaging portion K2 and is connected to the outer T-shaped structure 121. When the second engaging portion K2 engages with the first engaging portion K1, the boss T1 adheres to the bottom surface S2 of the first engaging portion.

[0058] In this embodiment, the combined fan blade structure 1 further includes a locking member 14. Each first engaging portion K1 has a connector 112, which protrudes from the bottom surface S2 of the first engaging portion K1. The locking member 14 is connected to the connector 112 to press the two opposing bosses T1 against the bottom surface S2 of the first engaging portion. Each locking member 14 includes a locking portion 141 and a pressing portion 142. The pressing portion 142 is connected to the locking portion 141. At least a portion of the locking portion 141 is inserted into the connecting hole 1121 of the connector 112. The pressing portion 142 presses the bosses T1 against the bottom surface S2 of the first engaging portion K1. The bottom surface of the bosses T1 has a first clearance portion B1 that avoids the pressing portion 142, and the side surface of the bosses T1 has a second clearance portion B2 that avoids the connector 112.

[0059] Furthermore, each of the second engaging portions K2 has a positioning post 123 protruding from its top surface S3, and the bottom surface S1 of the cover 11 has a plurality of positioning holes 113, each of the positioning holes 113 being located in the gap H, and the positioning post 123 being inserted into the positioning hole 113 accordingly.

[0060] Furthermore, the cover 11 also has a main shaft seat 114 and a main shaft 115. The main shaft seat 114 protrudes from the bottom surface S1 of the cover 11, and the main shaft 115 is mounted on the main shaft seat 114. In this embodiment, the cover is a one-piece molded structure, which is a preferred implementation.

[0061] In one embodiment of this invention, the cover 11 and the fan blades 12 are made of different materials. Specifically, the vibration during fan rotation mainly originates from the uneven mass distribution (imbalance) of rotating components (such as blades and rotors). When the fan rotates, these unbalanced masses generate periodic centrifugal forces, causing the entire fan system to vibrate. Based on the structure of this invention, the cover 11 and the fan blades 12 can be designed with different material densities, thereby providing sufficient mass within the limited structural space of the fan to balance or increase inertia for precise dynamic balancing, thus suppressing or reducing the vibration generated during fan operation.

[0062] In summary, this utility model not only offers a simple and convenient fixing method and provides a stable connection, but also utilizes the different densities of the materials to suppress and reduce vibrations generated during fan operation; furthermore, it enables modular blades with high shareability.

[0063] Therefore, the embodiments of this utility model are sufficient to achieve the above-mentioned objectives and advantages, and can also achieve the essential effects that should be possessed. The specific embodiments described above are merely illustrative examples, and those skilled in the art can make various modifications and equivalent implementations after understanding the content of this utility model. Except for the contents described in the following claims, the disclosed structural and design details are not limited. Therefore, it is understood that the specific embodiments described above can be changed, combined, or modified, and all such changes should be considered to be covered within the scope and spirit of this utility model. Furthermore, it should be understood that the constituent elements of this embodiment are not mutually exclusive, and those skilled in the art can arbitrarily combine the constituent elements according to design requirements.

Claims

1. A composite fan blade structure, characterized in that, include: The cover has a bottom surface and a plurality of first engaging parts, the plurality of first engaging parts protruding from the bottom surface of the cover and surrounding the bottom surface, and a gap between two adjacent first engaging parts. Multiple fan blades, each of the fan blades having a second engaging portion, the second engaging portion being installed in the gap and engaging with the first engaging portion; A ring frame is installed on the bottom surface of the cover and engages with the first engaging part to clamp the second engaging part.

2. The combined fan blade structure as described in claim 1, characterized in that, Each of the first engaging portions has an inner T-shaped structure on its side, and each of the second engaging portions has an outer T-shaped structure on its side. The inner T-shaped structure and the outer T-shaped structure cooperate to make the second engaging portion engage with the first engaging portion.

3. The combined fan blade structure as described in claim 2, characterized in that, Each of the fan blades also has a fan blade body, which is connected to the second engaging portion, and each of the second engaging portions is flat and has an arc.

4. The combined fan blade structure as described in claim 1, characterized in that, Each of the second engaging portions has a protruding positioning post on its top surface, and the bottom surface of the cover has a plurality of positioning holes, each of which is located in the gap, and the positioning post is inserted into the corresponding positioning hole.

5. The combined fan blade structure as described in claim 2, characterized in that, Each of the second engaging portions has a boss on the upper part of its side surface. The boss protrudes from the side surface of the second engaging portion and is connected to the outer T-shaped structure. When the second engaging portion engages with the first engaging portion, the boss is attached to the bottom surface of the first engaging portion.

6. The combined fan blade structure as described in claim 5, characterized in that, It also includes a locking fastener, each of the first engaging portions having a connector, the connector protruding from the bottom surface of the first engaging portion, the locking fastener being connected to the connector to press the two opposing bosses against the bottom surface of the first engaging portion.

7. The combined fan blade structure as described in claim 6, characterized in that, Each of the locking fasteners includes a locking portion and a pressing portion, the pressing portion being connected to the locking portion, at least a portion of the locking portion being inserted into the connector, the pressing portion pressing the boss against the bottom surface of the first engaging portion, the bottom surface of the boss having a first clearance portion that avoids the pressing portion, and the side surface of the boss having a second clearance portion that avoids the connector.

8. The combined fan blade structure as described in claim 3, characterized in that, The cover also has a main shaft seat and a main shaft. The main shaft seat protrudes from the bottom surface of the cover, and the main shaft is mounted on the main shaft seat.

9. The combined fan blade structure as described in claim 1, characterized in that, The cover is made of a different material than the fan blades.

10. The combined fan blade structure as described in claim 2 or 8, characterized in that, The cover is a one-piece molded structure.

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