A fan blade structure

Abstract

This application provides a fan blade structure, relating to the field of fan blade technology. The fan blade structure includes: a first connecting member; a second connecting member, the second connecting member being annular, and the first connecting member coaxially located inside the second connecting member; multiple blades, the multiple blades being evenly spaced around the first connecting member; each blade having at least two connecting portions, each connecting portion having at least one locking through hole, at least one connecting portion being embedded in the first connecting member, and at least one connecting portion being embedded in the second connecting member. The fan blade structure provided by this application solves the problem in related technologies where the connection between the blade and the central disk or reinforcing ring is prone to cracking and detachment, leading to fan blade rotation instability, a significant decrease in heat dissipation capacity, and poor safety.

Description

Technical Field

[0001] This application relates to the field of fan blade technology, and more particularly to a fan blade structure. Background Technology

[0002] Today, fans are widely used in heat dissipation devices. Fans are typically driven by a motor to rotate the blades, creating airflow, which then carries away heat from the device, thus achieving the purpose of heat dissipation.

[0003] In related technologies, the fan blade includes a central disk, a reinforcing ring, and multiple blades. The central disk is coaxial and spaced apart inside the reinforcing ring. The blades are located between the central disk and the reinforcing ring, and the two ends of the blades are connected to the central disk and the reinforcing ring by welding or bonding, respectively. The blades are evenly distributed around the central disk. The central disk is connected to the output shaft of the motor.

[0004] However, as the aforementioned fans are used for a longer period of time, the connection between the blades and the central disk or reinforcing ring is prone to cracking and falling off, which in turn leads to unstable rotation of the fan blades, a significant decrease in heat dissipation capacity, and poor safety. Utility Model Content

[0005] This application provides a fan blade structure to solve the problem in related technologies that the connection between the blade and the central disk or reinforcing ring is prone to cracking and falling off, which leads to unstable fan blade rotation, a significant decrease in heat dissipation capacity, and poor safety.

[0006] This application provides a fan blade structure, including:

[0007] First connector;

[0008] The second connector is annular, and the first connector is coaxially located inside the second connector.

[0009] Multiple blades, wherein the multiple blades are evenly spaced around the first connector;

[0010] Each blade has at least two connecting portions, each connecting portion having at least one locking through hole, at least one connecting portion being embedded in the first connector, and at least one connecting portion being embedded in the second connector.

[0011] In one possible implementation, the connecting portion is located at the end of the blade in the extending direction;

[0012] Alternatively, the connecting portion may be located on the side edge of the blade in the vertical extension direction.

[0013] In one possible implementation, the first connector and the second connector are respectively located at both ends of the blade in the extension direction.

[0014] In one possible implementation, the first connector is located at one end of the blade in the extending direction, and the second connector is located at the middle of the blade.

[0015] In one possible implementation, the latching through hole includes a first segment and a second segment that are connected to each other, wherein the extending direction of the first segment is set at an angle to the extending direction of the second segment.

[0016] In one possible implementation, the latching through hole is a round hole, a strip hole, or a wavy hole.

[0017] In one possible implementation, the blade has a tensile strength of 350-370 MPa and a thickness of 0.05-0.15 mm.

[0018] In one possible implementation, the blade is a magnesium alloy component.

[0019] In one possible implementation, the blade is a curved rolled piece.

[0020] In one possible implementation, the width of the blade gradually increases from the end of the blade toward the first connector to the end away from the first connector.

[0021] This application provides a fan blade structure comprising: a first connector; a second connector, the second connector being annular, the first connector being coaxially located inside the second connector; multiple blades, the multiple blades being evenly spaced around the first connector; each blade having at least two connecting portions, each connecting portion having at least one locking through hole, at least one connecting portion being embedded in the first connector, and at least one connecting portion being embedded in the second connector. After the blades are manufactured, the first and second connectors can be formed on the multiple blades using methods such as liquid forging, die casting, or injection molding, ensuring that at least one connecting portion and its corresponding locking through hole on the blade are embedded in the first connector, and at least one connecting portion and its corresponding locking through hole are embedded in the second connector. This ensures that when the blade is connected to the first or second connector, the corresponding connecting portion forms a ring-lock structure, further ensuring the stability of the connecting portion and reducing the possibility of cracking and detachment. In practice, the first connecting component can be a central disk, and the second connecting component can be a reinforcing ring. This solves the problem in related technologies that the connection between the blade and the central disk or reinforcing ring is prone to cracking and falling off, which leads to unstable blade rotation, a significant decrease in heat dissipation capacity, and poor safety. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] Figure 1 This is a schematic diagram of a fan blade structure provided in an embodiment of this application;

[0024] Figure 2 for Figure 1 A schematic diagram of a blade structure with a round hole for the central locking buckle;

[0025] Figure 3 for Figure 1 A schematic diagram of a blade structure with an S-shaped through hole for the central locking latch;

[0026] Figure 4 for Figure 1 A schematic diagram of a blade structure with a T-shaped through hole for the central locking buckle;

[0027] Figure 5 This is a schematic diagram of a fan blade structure provided in Embodiment 1 of this application;

[0028] Figure 6 This is a schematic diagram of a fan blade structure provided in Embodiment 2 of this application;

[0029] Figure 7 This is a schematic diagram of the blade structure in the comparative example of this application;

[0030] Figure 8 This is a schematic diagram of the blade installation structure in the comparative example of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100 - First connector;

[0033] 200 - Second connector;

[0034] 300-blade;

[0035] 310 - Connecting part;

[0036] 320 - Locking through hole; 321 - First section; 322 - Second section.

[0037] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0038] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0039] In related technologies, fans are widely used in heat dissipation devices. Fans are typically driven by a motor to rotate the blades, creating airflow, which then carries away heat from the device, thus achieving the purpose of heat dissipation.

[0040] The fan blade includes a central disk, a reinforcing ring, and multiple blades. The central disk is coaxial and spaced apart inside the reinforcing ring. The blades are located between the central disk and the reinforcing ring, and the two ends of the blades are connected to the central disk and the reinforcing ring by welding or bonding, respectively. The blades are evenly distributed around the central disk. The central disk is connected to the output shaft of the motor.

[0041] However, with prolonged use, the connection between the blades and the central disk or reinforcing ring of the aforementioned fans is prone to cracking due to fatigue, leading to separation of the blades from the central disk or reinforcing ring, or even complete detachment of the blades. Secondly, the fan blades are prone to instability and vibration during subsequent rotation, affecting the motor's lifespan and posing a safety threat to those nearby.

[0042] Therefore, this application provides a fan blade structure, including: a first connector; a second connector, the second connector being annular, the first connector being coaxially located inside the second connector; a plurality of blades, the plurality of blades being evenly spaced around the first connector; each blade having at least two connecting portions, each connecting portion having at least one locking through hole, at least one connecting portion being embedded in the first connector, and at least one connecting portion being embedded in the second connector.

[0043] Therefore, after the blades are manufactured, first and second connecting parts can be formed on multiple blades using methods such as liquid forging, die casting, or injection molding. At least one connecting part and a corresponding locking through-hole are embedded in the first connecting part, and at least one connecting part and a corresponding locking through-hole are embedded in the second connecting part. This ensures that when the blade is connected to the first or second connecting part, the corresponding connection point forms a ring-lock structure, further ensuring the stability of the connection and reducing the possibility of cracking and detachment. In implementation, the first connecting part can be a center disk, and the second connecting part can be a reinforcing ring. This solves the problem in related technologies where the connection between the blade and the center disk or reinforcing ring is prone to cracking and detachment, leading to blade rotation instability, a significant decrease in heat dissipation capacity, and poor safety.

[0044] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0045] like Figure 1 As shown in the embodiment of this application, a fan blade structure includes:

[0046] First connector 100;

[0047] The second connector 200 is annular, and the first connector 100 is coaxially located inside the second connector 200.

[0048] Multiple blades 300 are evenly spaced around the first connector 100;

[0049] Each blade 300 has at least two connecting portions 310, each connecting portion 310 having at least one locking through hole 320, at least one connecting portion 310 being embedded in the first connector 100, and at least one connecting portion 310 being embedded in the second connector 200.

[0050] It should be noted that the first connector 100 can be ring-shaped, cylindrical, or other shapes, and the material can be aluminum alloy, magnesium alloy, plastic, or other materials, without limitation. The second connector 200 is ring-shaped, which can be a ring-shaped rod or a ring-shaped tube, and the material can be aluminum alloy, magnesium alloy, plastic, or other materials, without limitation.

[0051] In practice, the first connector 100 and the second connector 200 can be formed by liquid forging, die casting, injection molding or other methods.

[0052] Specifically, during the fabrication of the blade 300, at least two connecting portions 310 and locking through holes 320 are simultaneously formed on the blade 300. In this embodiment, there may be two connecting portions 310, and each connecting portion 310 may have one, two, or other number of locking through holes 320. In other embodiments, the connecting portions 310 may also be three, four, or other numbers.

[0053] Secondly, the first connector 100 and the second connector 200 can be formed on multiple blades 300 by liquid forging, die casting, injection molding, or other methods. One connecting part 310 and its corresponding locking through hole 320 on the blade 300 are embedded in the first connector 100, and the other connecting part 310 and its corresponding locking through hole 320 are embedded in the second connector 200.

[0054] This allows the blade 300 to be connected to both the first connector 100 and the second connector 200 simultaneously. Furthermore, the corresponding connection points (i.e., the connection points between the blade 300 and the first connector 100, and the connection points between the blade 300 and the second connector 200) form a ring-lock structure, further ensuring the stability of the connection points and reducing the possibility of cracking or falling off.

[0055] In practice, the first connecting member 100 can be a center disk and the second connecting member 200 can be a reinforcing ring. This solves the problem in related technologies that the connection between the blade 300 and the center disk or reinforcing ring is prone to cracking and falling off, which leads to the blade 300 falling off and the fan blade rotation becoming unstable. At the same time, it improves the reliability of the connection between the blade 300 and the center disk and the reinforcing ring.

[0056] It should be further explained that when forming the first connector 100 and the second connector 200, a mold with a cavity for forming the first connector 100 and a cavity for forming the second connector 200 can be used. Then, multiple blades 300 are installed on the mold and distributed in a circumferential array. The number of blades 300 can be 50 to 90 or other numbers.

[0057] Next, one of the connecting portions 310 (including the locking through hole 320) on the blade 300 is inserted into the cavity for molding the first connector 100, and the other connecting portion 310 (including the locking through hole 320) on the blade 300 is inserted into the cavity for molding the second connector 200. Finally, the corresponding slurry is injected into the cavity to mold the first connector 100 and the second connector 200. Thus, the connecting portion 310 and the corresponding locking through hole 320 can be embedded in the first connector 100 or the second connector 200.

[0058] When the fan blades are in use, the first connecting piece 100 can be connected to the output shaft of the motor by screwing, plugging, pinning or other means, so as to achieve the purpose of the motor driving the fan blades to rotate.

[0059] In some embodiments, the connecting portion 310 is located at the end of the blade 300 in the extending direction;

[0060] Alternatively, the connecting part 310 is located on the side edge of the blade 300 in the vertical extension direction.

[0061] In other words, the connecting part 310 can be provided at the end of the blade 300 in the extending direction, or it can be provided on the side edge of the blade 300 in the vertical extending direction (that is, on the side edge in the width direction of the blade 300).

[0062] In this embodiment, as Figure 1As shown, a connecting portion 310 corresponding to the first connecting member 100 is provided on one end of the blade 300 in the extending direction. A connecting portion 310 corresponding to the second connecting member 200 is provided on the other end of the blade 300 in the extending direction, and the connecting portion 310 is located on the side edge perpendicular to the extending direction.

[0063] Therefore, after the first connector 100 and the second connector 200 are connected to the blade 300, the first connector 100 and the second connector 200 are respectively located at both ends of the blade 300 in the extending direction, and the second connector 200 is located on the side of the blade 300. Thus, when the fan blade is in use, the fan blade can be installed on the motor through the first connector 100, and the first connector 100 and the second connector 200 support the multiple blades 300, ensuring the stability of the blades 300 during use.

[0064] In addition, when applying the air, the side of the blade 300 facing away from the second connector 200 can be used as the air outlet direction, which can reduce the possibility of the second connector 200 obstructing the airflow.

[0065] In practice, a flange structure can be integrally formed on the side edge of the blade 300 at the end away from the first connector 100 and in the vertical extension direction, and this flange structure can be used as the connecting part 310 between the blade 300 and the second connector 200.

[0066] In some embodiments, the first connector 100 may be disposed at one end of the blade 300 in the extending direction, and the second connector 200 may be disposed at the middle of the side edge of the blade 300 in the vertical extending direction, so as to support the blade 300 from the middle of the blade 300 and optimize the support effect on the blade 300. Alternatively, the second connector 200 may be disposed at the end of the blade 300 away from the first connector 100.

[0067] In some embodiments, such as Figure 2 As shown, the locking through hole 320 can be set as a round hole. For example, two round holes can be provided on both connecting parts 310 so that the two round holes are embedded in the first connecting member 100 or the second connecting member 200, thereby forming a ring structure between the blade 300 and the first connecting member 100 or the second connecting member 200 to ensure the reliability of the connection.

[0068] In addition, in order to reduce the number of punching operations to improve the convenience of punching on the connecting part 310, and at the same time ensure that the locking through hole 320 has a better positioning effect between the blade 300 and the first connecting member 100 or the second connecting member 200.

[0069] In some embodiments, such as Figure 3As shown, the locking through hole 320 can also be set as a wavy hole, such as an S-shape. For example, a wavy hole can be provided on both connecting parts 310 so that the wavy hole is embedded in the first connecting member 100 or the second connecting member 200, thereby forming a ring-lock structure between the blade 300 and the first connecting member 100 or the second connecting member 200 to ensure the reliability of the connection.

[0070] In some embodiments, such as Figure 4 As shown, the latching through hole 320 can also be configured to include a first segment 321 and a second segment 322 that are connected to each other. The extension direction of the first segment 321 is set at an angle to the extension direction of the second segment 322. For example, the first segment 321 and the second segment 322 can be perpendicular to each other so that the latching through hole 320 is a T-shaped hole.

[0071] For example, two T-shaped holes can be provided on the connecting portion 310 corresponding to the first connector 100, and one T-shaped hole can be provided on the connecting portion 310 corresponding to the second connector 200, so that the T-shaped holes are embedded in the first connector 100 or the second connector 200, thereby forming a ring structure between the blade 300 and the first connector 100 or the second connector 200, ensuring the reliability of the connection.

[0072] In other embodiments, the extension direction of the first segment 321 may form an angle of 30 degrees, 60 degrees or other angles with the extension direction of the second segment 322.

[0073] In addition, the latching through hole 320 can be set as a strip, square, rectangle, triangle, star, C-shape or I-shape, etc., without any restrictions.

[0074] In some embodiments, the blade 300 is a magnesium alloy part, and the blade 300 is a curved rolled part.

[0075] For example, the blade 300 is made by rolling and bending processes. First, the magnesium alloy sheet is rolled into foil with a thickness of 0.05-0.15mm. It should be noted that the foil can be rolled to a minimum thickness of 0.05mm, and there is no limit to the maximum thickness.

[0076] Secondly, the foil material is first punched and blanked to form the blade 300 (including the connecting part 310), and then the locking through hole 320 on the blade 300 is laser-cut. Of course, the locking through hole 320 can also be formed by punching. Then the blade 300 is punched and bent to form a blade 300 with a certain curved shape so that the airflow can be formed more stably when the fan blade rotates.

[0077] This allows for the manufacture of blades 300 with a tensile strength of 350-370 MPa and a thickness of 0.05-0.15 mm, resulting in blades 300 that are relatively thin and light while still meeting tensile strength requirements. In other embodiments, blades 300 can be made of other materials, as long as the required tensile strength and thickness requirements are met; there are no restrictions on this.

[0078] Furthermore, compared to the fan blades in related technologies, based on the same number of blades 300, the fan blades in this application can increase the space between two adjacent blades 300, thus enabling the fan to increase air volume and air pressure while reducing weight.

[0079] In addition, while meeting the weight requirements, the number of blades 300 can be appropriately increased because the blades 300 are relatively thin and light, so as to increase the air volume and air pressure of the fan.

[0080] In some embodiments, such as Figure 2 As shown, the width of the blade 300 gradually increases from the end of the blade 300 facing the first connector 100 to the end away from the first connector 100.

[0081] This increases the coverage area of ​​the blades by 300, increases the space swept by the blades when they rotate, and thus further increases the air volume and air pressure of the fan, improving the performance of the blades.

[0082] In summary, the fan blade structure provided in this application embodiment allows for the formation of a first connector 100 and a second connector 200 on multiple blades 300 after the blades 300 are manufactured, using methods such as liquid forging, die casting, or injection molding. Furthermore, one connecting portion 310 and its corresponding locking through hole 320 on the blade 300 are embedded in the first connector 100, and the other connecting portion 310 and its corresponding locking through hole 320 are embedded in the second connector 200. This ensures that when the blade 300 is connected to the first connector 100 or the second connector 200, the corresponding connecting portion forms a ring-lock structure, further ensuring the stability of the connecting portion and reducing the possibility of cracking or detachment.

[0083] In practice, the first connecting member 100 can be a central disk and the second connecting member 200 can be a reinforcing ring. This solves the problem in related technologies that the connection between the blade 300 and the central disk or reinforcing ring is prone to cracking and falling off, which leads to unstable rotation of the fan blade, a significant decrease in heat dissipation capacity, and poor safety.

[0084] The present invention will be described in detail below through specific embodiments and comparative examples. The present invention includes, but is not limited to, the following embodiments.

[0085] Example 1:

[0086] like Figure 5As shown, the blade 300 is made of magnesium alloy with a tensile strength of 350-370 MPa. First, the magnesium alloy sheet is rolled into a 0.15mm foil. The foil is then stamped to form the blade 300 (which includes two connecting parts 310, one of which is located at one end of the blade 300 in the extension direction; the other connecting part 310 is located at the other end of the blade 300 in the extension direction, on the side edge of the blade 300 in the width direction). Then, a locking through hole 320 is laser-cut into the connecting part 310. The locking through hole 320 is a round hole with a diameter of 2mm. Finally, the blade 300 is stamped and bent into a blade 300 with a certain curved shape.

[0087] Fifty-five blades 300 are placed together into a liquid forging mold. The mold cavity includes cavities for forming the first connector 100 and the second connector 200 respectively. The connecting portion 310 on the end of the blade 300 extends into the cavity for forming the first connector 100, and the connecting portion 310 on the side edge of the blade 300 extends into the cavity for forming the second connector 200.

[0088] Molten magnesium alloy is injected into the mold and cooled to form the first connector 100 and the second connector 200, thus completing the connection between the three structures: blade 300, the first connector 100, and the second connector 200.

[0089] As a result, a ring-shaped structure is formed between the blade 300, the first connector 100, and the second connector 200, which improves the reliability of the connection between the blade 300 and the first connector 100 and the second connector 200.

[0090] Example 2:

[0091] like Figure 6 As shown, the blade 300 is made of magnesium alloy with a tensile strength of 350-370 MPa. First, the magnesium alloy sheet is rolled into a 0.05 mm foil. The foil is then stamped to form the blade 300 (which includes two connecting parts 310, one of which is located at one end of the blade 300 in the extension direction, and the other is located at the other end of the blade 300 in the extension direction, on the side edge of the blade 300 in the width direction). Then, a locking through hole 320 is laser-cut into the connecting part 310. The locking through hole 320 is a T-shaped hole. Finally, the blade 300 is stamped and bent into a blade 300 with a certain curved shape.

[0092] Ninety fan blades are placed together into an injection mold. The mold cavity includes cavities for molding the first connector 100 and the second connector 200 respectively. The connecting portion 310 on the end of the blade 300 extends into the cavity for molding the first connector 100, and the connecting portion 310 on the side edge of the blade 300 extends into the cavity for molding the second connector 200.

[0093] After injection molding and cooling, the first connector 100 and the second connector 200 are formed, and the connection between the three structures, namely the blade 300, the first connector 100 and the second connector 200, is completed.

[0094] As a result, a ring-shaped structure is formed between the blade 300, the first connector 100, and the second connector 200, which improves the reliability of the connection between the blade 300 and the first connector 100 and the second connector 200.

[0095] Comparative example:

[0096] like Figure 7 and Figure 8 As shown, the comparative example differs from the above embodiment in that the blade 300 has a different structural design; otherwise, they are the same. The blade 300 in the comparative example lacks the connecting portion 310 and the locking through hole 320.

[0097] At this time, the structure of the blade 300 in the comparison ratio will cause the connection between the blade 300 and the first connector 100 and the second connector 200 to be unreliable. During the high-speed movement of the fan blade, the connection between the blade 300 and the first connector 100 or the second connector 200 is prone to cracking, which will make the blade 300 easy to shake or fall off, affecting the heat dissipation performance and safety.

[0098] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A fan blade structure, characterized by, The utility model relates to a kind of magnesium alloy leaf blade, including: First connecting piece (100); Second connecting piece (200), the second connecting piece (200) is annular, the first connecting piece (100) is coaxially located in the inside of the second connecting piece (200); Multiple leaves (300), multiple the leaves (300) are evenly spaced around the first connecting piece (100); Each of the leaves (300) has at least two connecting parts (310), the connecting part (310) has at least one lock hole (320), at least one connecting part (310) is buried in the first connecting piece (100), at least one connecting part (310) is buried in the second connecting piece (200).

2. The fan structure of claim 1, wherein The connecting part (310) is located on the end of the leaf (300) in the extension direction. Or, the connecting part (310) is located on the side edge of the leaf (300) in the vertical extension direction.

3. The leaf structure of claim 2, wherein, The first connecting piece (100) and the second connecting piece (200) are respectively located at both ends of the leaf (300) in the extension direction.

4. The leaf structure of claim 2, wherein, The first connecting piece (100) is located at one end of the leaf (300) in the extension direction, and the second connecting piece (200) is located at the middle of the leaf (300).

5. A leaf structure according to any one of claims 1-4, c h a r a c t e r i s e d in that The lock hole (320) includes a first section (321) and a second section (322) connected in communication, and the extension direction of the first section (321) is arranged at an angle with the extension direction of the second section (322).

6. The fan structure according to any one of claims 1 to 4, wherein The lock hole (320) is a round hole, a strip-shaped hole or a wave-shaped hole.

7. The fan structure according to any one of claims 1 to 4, wherein The tensile strength of the leaf (300) is 350-370Mpa, and the thickness of the leaf (300) is 0.05-0.15mm.

8. The leaf structure of claim 7, wherein, The leaf (300) is a magnesium alloy piece.

9. The leaf structure of claim 7, wherein, The leaf (300) is a curved rolled piece.

10. The fan structure according to any one of claims 1 to 4, wherein The width of the leaf (300) gradually increases from one end of the leaf (300) towards the first connecting piece (100) to the other end away from the first connecting piece (100).

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