Flexible fan blade structure for fan

Abstract

The utility model discloses a flexible fan blade structure for a fan, which relates to the field of fan blades and comprises a fixing frame, a circular groove is arranged in the fixing frame, a central connecting block is arranged in the middle of the circular groove, a rotating shaft is rotatably connected to one side of the central connecting block, and a plurality of fan blade bodies are fixed on the outer side of the rotating shaft. The permanent magnets are fixed to the ends of the sides, away from the center connecting block, of the multiple fan blade bodies, the gravity of the ends of the corresponding fan blade bodies can be increased through the multiple permanent magnets, the fan blade bodies can rotate more powerfully, and the situation that the ends of the fan blade bodies are bent due to continuous rotation of the fan blade bodies after long-time use is avoided; and the magnetic attraction mechanism and the permanent magnet repel each other, so that a certain distance can be always kept between the end part of the fan blade body and the extending plate, the end part of the fan blade body is prevented from being bent and colliding with the extending plate, a protection effect is achieved, and even if the end part of the fan blade body is bent, the repulsive force between the magnets can keep the rotation stability of the fan blade body.

Description

Technical Field

[0001] The utility model relates to the field of fan blades, in particular to a flexible fan blade structure used in a fan. Background Art

[0002] The fan blades consist of a hub and multiple separate blades. The blades are connected to the outer circumference of the hub by welding. However, due to the uneven thickness of the welding points, in order to make the fan blades rotate smoothly, they need to be polished before and after painting to improve the dynamic balance performance.

[0003] Existing fan blades include metal or plastic materials. However, after long-term use, the ends of the fan blades continue to rotate and rub against the air, causing the ends of the fan blades to bend to a certain extent, affecting air supply.

[0004] Therefore, it is necessary to propose a flexible fan blade structure for use in a fan to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a flexible fan blade structure for use in a fan, so as to solve the problem that the existing fan blades are made of metal or plastic materials, but after long-term use, the end of the fan blade continues to rotate and rubs against the air, causing the end of the fan blade to bend to a certain extent, thereby affecting the air supply.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flexible fan blade structure used in a fan, comprising a fixing frame, a circular groove is provided inside the fixing frame, a central connecting block is provided in the middle of the circular groove, one side of the central connecting block is rotatably connected to a rotating shaft, a plurality of fan blade bodies are fixed to the outside of the rotating shaft, a permanent magnet is fixed to the end of the plurality of fan blade bodies away from the central connecting block, a plurality of connecting rods are connected to the outside of the central connecting block, one end of the plurality of connecting rods is fixed to the inner wall of the fixing frame, a through groove is provided in the middle of the plurality of connecting rods, an extension plate is slidably fitted in the through groove, and a magnetic attraction mechanism is fixed to the side of the extension plate close to the permanent magnet.

[0007] Preferably, the through groove passes through the side of the connecting rod close to and away from the fan blade body at the same time, and a through hole is opened on the side of the connecting rod, the through hole and the through groove are connected, and the internal thread of the through hole is equipped with a fixing screw, and one end of the fixing screw is pressed tightly against the surface of the protruding plate.

[0008] Preferably, a protruding end is provided on one side of the circular groove, the interior of the protruding end is communicated with the interior of the circular groove, and a filter screen is provided inside the protruding end.

[0009] Preferably, a through hole is opened in the middle of the filter, one end of the rotating shaft extends out of the through hole, and a connecting ring is fixed on the outside of the extended end, a cleaning plate is fixed on the outside of the connecting ring, and a brush is provided on the side of the cleaning plate close to the filter, and the brush is attached to the filter.

[0010] Preferably, a controller is fixed to the top of the fixing frame, and a temperature sensor is provided inside the fixing frame.

[0011] Preferably, connection holes are provided at the four corners of the fixing frame.

[0012] Preferably, the circular groove passes through both sides of the fixing frame.

[0013] The technical effects and advantages of this utility model are:

[0014] 1. Multiple permanent magnets can increase the gravity of the corresponding end of the fan blade body, making the fan blade body more powerful when rotating, avoiding the continuous rotation of the fan blade body under long-term use, causing the end of the fan blade body to bend, and the magnetic attraction mechanism and the permanent magnet repel each other, which can always maintain a certain distance between the end of the fan blade body and the extension plate, avoiding the bending of the end of the fan blade body and colliding with the extension plate, playing a protective role. Even if the end of the fan blade body is bent, the repulsive force between the magnets can maintain the stability of the rotation of the fan blade body.

[0015] 2. In the actual operation of the present invention, when the multiple fan blade bodies rotate, wind is generated, and the outside air is sucked in from one side of the filter. The dust and particles in the air will be intercepted by the filter. While the rotating shaft drives the fan blade body to rotate, the cleaning plate will be mobilized to rotate, and the brush will brush the filter to clean the dust and particles adhering to the filter to avoid affecting the entry of outside air. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram from one perspective of the flexible fan blade structure used in the fan of the present invention.

[0017] Figure 2 This is a structural schematic diagram from another perspective of the flexible fan blade structure used in the fan of the utility model.

[0018] In the figure: 1. fixing bracket; 2. controller; 3. center connecting block; 4. connecting rod; 5. extension plate; 6. fixing screw; 7. fan blade body; 8. permanent magnet; 9. protruding end; 10. filter screen; 11. connecting ring; 12. cleaning plate; 13. rotating shaft. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clarify the technical solutions in the embodiments of the present invention; it is clear that the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The utility model provides Figure 1 - Figure 2 A flexible fan blade structure used in a fan shown in the figure includes a fixing frame 1, a circular groove is opened inside the fixing frame 1, a central connecting block 3 is arranged in the middle of the circular groove, a rotating shaft 13 is rotatably connected to one side of the central connecting block 3, a plurality of fan blade bodies 7 are fixed to the outside of the rotating shaft 13, a protruding end 9 is provided on one side of the circular groove, the interior of the protruding end 9 is connected to the interior of the circular groove, a filter screen 10 is arranged inside the protruding end 9, connecting holes are opened at the four corners of the fixing frame 1, and the circular groove runs through both sides of the fixing frame 1 at the same time.

[0021] A through hole is opened in the middle of the filter 10, one end of the rotating shaft 13 extends out of the through hole, and a connecting ring 11 is fixed to the outside of the extended end, and a cleaning plate 12 is fixed to the outside of the connecting ring 11. A brush is provided on the side of the cleaning plate 12 close to the filter 10, and the brush is attached to the filter 10.

[0022] In the actual operation of the present invention, when the multiple fan blade bodies 7 rotate, wind is generated, and the outside air is sucked in from one side of the filter 10. The dust and particles in the air will be intercepted by the filter 10. While the rotating shaft 13 drives the fan blade body 7 to rotate, it will mobilize the cleaning plate 12 to rotate and make the brush brush the filter 10 to clean the dust and particles adhering to the filter 10 to avoid affecting the entry of outside air.

[0023] Permanent magnets 8 are fixed to the ends of the blade bodies 7 away from the central connecting block 3. Connecting rods 4 are connected to the outside of the central connecting block 3. One end of each connecting rod 4 is fixed to the inner wall of the fixing frame 1. A through slot is defined in the middle of each connecting rod 4. A protruding plate 5 slidably fits within the slot. A magnetic attraction mechanism is fixed to the side of the protruding plate 5 near the permanent magnet 8. The magnetic attraction mechanism can use either an electromagnet or a magnetic block. The magnetic attraction mechanism and the permanent magnet 8 repel each other.

[0024] Multiple permanent magnets 8 can increase the gravity of the corresponding end of the fan blade body 7, so that the fan blade body 7 can rotate more powerfully, avoiding the continuous rotation of the fan blade body 7 under long-term use, causing the end of the fan blade body 7 to bend, and the magnetic attraction mechanism and the permanent magnet 8 repel each other, and can always maintain a certain distance between the end of the fan blade body 7 and the extension plate 5, avoiding the end of the fan blade body 7 from bending and colliding with the extension plate 5, playing a protective role, and at the same time maintaining the stability of the rotation of the fan blade body 7.

[0025] The through slot penetrates both the side of the connecting rod 4 close to and away from the fan body 7. A through hole is opened on the side of the connecting rod 4, and the through hole and the through slot are connected. The internal thread of the through hole is matched with a fixing screw 6, and one end of the fixing screw 6 is pressed tightly against the surface of the extension plate 5. As needed, the depth of the extension plate 5 in the connecting rod 4 can be changed to make the extension plate 5 close to or away from the fan body 7.

[0026] A controller 2 is fixed on the top of the fixing frame 1, and a temperature sensor is set inside the fixing frame 1. When the temperature sensor detects that the temperature of the operating mechanism in the fixing frame 1 is high, the controller 2 can control the fan blades to stop rotating to avoid overheating and crash.

Claims

1. A flexible fan blade structure for a fan, comprising a fixing frame (1), characterized in that: A circular groove is provided inside the fixing frame (1), a central connecting block (3) is provided in the middle of the circular groove, one side of the central connecting block (3) is rotatably connected to a rotating shaft (13), a plurality of fan blade bodies (7) are fixed on the outer side of the rotating shaft (13), a permanent magnet (8) is fixed to the end of the plurality of fan blade bodies (7) away from the central connecting block (3), a plurality of connecting rods (4) are connected to the outer side of the central connecting block (3), one end of the plurality of connecting rods (4) is fixed to the inner wall of the fixing frame (1), a through groove is provided in the middle of the plurality of connecting rods (4), a protruding plate (5) is slidably fitted in the through groove, and a magnetic attraction mechanism is fixed to the side of the protruding plate (5) close to the permanent magnet (8).

2. The flexible fan blade structure used in a fan according to claim 1, characterized in that: The through groove simultaneously penetrates the side of the connecting rod (4) close to and away from the fan blade body (7), and a through hole is opened on the side of the connecting rod (4), the through hole and the through groove are connected, and the internal thread of the through hole is matched with a fixing screw (6), and one end of the fixing screw (6) is pressed tightly against the surface of the extension plate (5).

3. The flexible fan blade structure used in a fan according to claim 1, characterized in that: A protruding end (9) is provided on one side of the circular groove, the interior of the protruding end (9) is communicated with the interior of the circular groove, and a filter screen (10) is provided inside the protruding end (9).

4. The flexible fan blade structure used in a fan according to claim 3, characterized in that: A through hole is provided in the middle of the filter screen (10), one end of the rotating shaft (13) extends out of the through hole, and a connecting ring (11) is fixed to the outer side of the extended end, a cleaning plate (12) is fixed to the outer side of the connecting ring (11), and a brush is provided on the side of the cleaning plate (12) close to the filter screen (10), and the brush is attached to the filter screen (10).

5. The flexible fan blade structure used in a fan according to claim 1, characterized in that: A controller (2) is fixed to the top of the fixing frame (1), and a temperature sensor is arranged inside the fixing frame (1).

6. The flexible fan blade structure for a fan according to claim 1, characterized in that: The four corners of the fixing frame (1) are provided with connection holes.

7. The flexible fan blade structure for a fan according to claim 1, characterized in that: The circular groove passes through both sides of the fixing frame (1) at the same time.

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