Anti-deviation groove for fan blade of fan

Abstract

The utility model relates to the related technical field of fan structures, in particular to a fan blade deviation preventing groove which comprises a fan frame body, fan blades, a shaft core and a resin part, the bottom end of the middle of each fan blade is connected with a connecting sleeve, the bottom end of each connecting sleeve is connected with the other end of the shaft core in a matched mode, and a coil frame is arranged on the fan frame body. An oil-retaining bearing is arranged on the inner periphery of the coil frame, a retaining ring structure is arranged on the top of the coil frame and is in matched butt joint with the connecting sleeve, a plurality of anti-deviation grooves are formed in the top ends of the middles of the fan blades, and the resin part wraps the peripheries of the middles of the fan blades. The problems that an existing fan structure is complex in anti-disengaging structure and low in shaft core perpendicularity are solved, the operation effect of the fan is improved, and the structural stability of the fan is guaranteed.

Description

Technical Field

[0001] The utility model relates to a fan slot structure, in particular to a fan blade anti-deviation slot, and belongs to the technical field related to fan structures. Background Art

[0002] When designing a fan with an oil-containing bearing, in order to prevent the blades from falling off when the fan is powered on, there are usually the following anti-falling structures. The first is a magnetic traction structure. This structure does not require structural parts to prevent falling off, and uses the magnetic force of the rotor and the suction between the iron core to ensure that the blades fall off. Due to assembly tolerances, external environmental factors and other factors, the designed suction will change, causing the blades to fall off. The second is a lower anti-falling structure. This structure uses a buckle to limit the shaft core and the bearing to achieve an anti-falling structure, but this structure is very prone to friction noise between the buckle and the shaft and bearing, and the increase in the number of parts used leads to increased costs. The third is an upper anti-falling structure. This structure can use the same number of parts as the magnetic traction structure to complete the anti-falling function of the upper anti-falling structure, but eliminates the disadvantage of poor fan noise caused by friction problems. However, in actual use, this structure will cause the verticality and coaxiality of the shaft core of the fan blades to be unstable between batches due to molding reasons.

[0003] Therefore, there is an urgent need to improve the existing fan blade anti-detachment structure and design an anti-detachment structure with a simple structure and good anti-detachment effect to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide a fan blade anti-deviation groove, which can ensure the stability of resin casting by arranging the anti-deviation groove on the top of the fan blade according to actual use needs, which is beneficial to ensure the coaxiality between the fan blade and the shaft core and improve the use effect of the fan.

[0005] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0006] A fan frame body, wherein an oil-containing bearing and a coil frame are arranged on the fan frame body, and the coil frame is arranged on the periphery of the oil-containing bearing;

[0007] A shaft core, one end of which is cooperatively connected with the oil-containing bearing;

[0008] A fan blade, wherein the middle bottom end of the fan blade is connected with a connecting sleeve, and the bottom end of the connecting sleeve is matched and connected with the other end of the shaft core;

[0009] Anti-deflection grooves, which are set in a plurality and arranged at the top of the middle part of the fan blade;

[0010] A resin portion is provided to wrap around the periphery of the middle portion of the fan blade, and the resin portion wraps part of the connecting sleeve, part of the shaft core and all of the anti-deviation grooves.

[0011] Preferably, the anti-deviation grooves are evenly distributed on the circumference of the top of the fan blades and on the periphery of the shaft core.

[0012] Preferably, the connecting sleeve and the anti-deviation groove are integrally formed and cast with the fan blade.

[0013] Preferably, a buckle sleeve structure is provided at the top end of the coil frame, and a docking sleeve that cooperates with the buckle sleeve structure is provided at the bottom end of the connecting sleeve.

[0014] Preferably, an annular buffer portion is provided in the middle of the buckle structure, and an abutment portion is provided at the bottom end of the buckle structure.

[0015] Preferably, a conical portion is provided at the top end of the buckle sleeve structure, and an arc portion is provided at the bottom end of the docking sleeve.

[0016] The utility model has at least the following beneficial effects:

[0017] 1. This structure increases the connection stability between the shaft core, the top of the fan blade, and the resin by setting the anti-deviation groove, thereby ensuring the verticality and stability of the connection between the shaft core and the fan blade, solving the problem of large vibration and strong noise caused by the rotation of the fan due to the verticality of the shaft core and the unstable strength of the resin molding in the existing fan blade structure during the operation of the rotor, and can strengthen the connection effect of the resin part and improve the operation stability of the fan;

[0018] 2. The anti-deviation groove can be integrally formed with the fan blade, which is simple to manufacture and low in cost. It is suitable for industrial production. The anti-deviation groove is arranged at the top of the fan blade to facilitate the casting and molding of the resin part, and is convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 It is a structural schematic diagram of the lower anti-slip structure in the prior art;

[0021] Figure 2 It is a structural schematic diagram of an upper anti-slip structure in the prior art;

[0022] Figure 3 A front view of the overall internal structure provided by the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the fan blades, connecting sleeves and shaft core provided by the utility model.

[0024] Figure 5 for Figure 3 A magnified schematic diagram of part A in FIG.

[0025] In the figure, 1. lower anti-slip structure; 2. upper anti-slip structure; 3. fan frame body; 4. oil-containing bearing; 5. shaft core; 6. fan blades; 7. resin part; 8. coil frame; 9. buckle sleeve structure; 10. connecting sleeve; 11. docking sleeve; 12. anti-deviation groove; 13. annular buffer part; 14. conical part; 15. arc-shaped part; 16. abutment part. DETAILED DESCRIPTION

[0026] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0027] like Figures 3 to 5 As shown, the anti-deviation groove structure provided in this embodiment includes a fan frame body 3, a fan blade 6, an axis core 5 and a resin part 7. The fan frame body 3 is provided with an oil-containing bearing 4 and a coil frame 8. The coil frame 8 is arranged on the periphery of the oil-containing bearing 4. One end of the axis core 5 is matched with the oil-containing bearing 4. The middle bottom end of the fan blade 6 is connected with a connecting sleeve 10. The bottom end of the connecting sleeve 10 is matched with the other end of the axis core 5. When the axis core 5 rotates, it drives the fan blade 6 to rotate on the fan frame body 3. A plurality of anti-deviation grooves 12 are arranged on the middle top of the fan blade 6. The resin part 7 is cylindrical and cast. The resin part 7 is wrapped and arranged on the periphery of the middle of the fan blade 6. The resin part 7 wraps part of the connecting sleeve 10, part of the axis core 5 and all of the anti-deviation grooves 12. Figure 1 The lower anti-slip structure 1 in the prior art is shown. Figure 2 The figure shows the upper anti-slip structure 2 in the prior art. The present application solves the problems of the complex structure of the lower anti-slip structure 1 and the low verticality of the shaft core 5 in the upper anti-slip structure 2 in the prior art by cooperating with the anti-deviation groove 12 and the resin part 7.

[0028] Preferably, see Figure 3 , Figure 4 The anti-deviation grooves 12 are evenly distributed on the circumference of the top of the fan blade 6 and on the periphery of the shaft core 5. This structure makes the casting and filling of the resin part 7 more uniform, which is beneficial to ensure the structural strength of the resin part 7 itself and the connection stability between the resin part 7 and the fan blade 6. The connecting sleeve 10 and the anti-deviation grooves 12 are integrally molded and cast with the fan blade 6, thereby reducing the production cost and improving the production efficiency.

[0029] Preferably, see Figures 3 to 5A buckle sleeve structure 9 is provided at the top of the coil frame 8, a docking sleeve 11 which cooperates with the buckle sleeve structure 9 is provided at the bottom of the connecting sleeve 10, an annular buffer portion 13 is provided in the middle of the buckle sleeve structure 9, and an abutment portion 16 is provided at the bottom of the buckle sleeve structure 9. The annular buffer portion 13 gives the buckle sleeve structure 9 a certain elastic buffering function. When installing the connecting sleeve 10, the connecting sleeve 10 is inserted into the buckle sleeve structure 9 until the top of the docking sleeve 11 abuts against the abutment portion 16, thereby realizing the installation of the shaft core 5.

[0030] Preferably, see Figure 3 , Figure 5 A conical portion 14 is provided at the top of the buckle sleeve structure 9, and an arcuate portion 15 is provided at the bottom of the docking sleeve 11. The setting of the conical portion 14 facilitates deformation buffering through the annular buffer portion 13 when the connecting sleeve 10 squeezes the buckle sleeve structure 9, and the setting of the arcuate portion 15 facilitates the press installation of the docking sleeve 11.

[0031] Working principle: When in use, insert one end of the shaft core 5 into the connecting sleeve 10, fix the fan blade 6 and the shaft core 5 through the mold, pour the resin part 7 and wrap the fan blade 6 and the shaft core 5, and use the anti-bias groove 12 to ensure the pouring stability of the resin part 7 and the connection stability after pouring, and ensure the coaxiality between the resin part 7, the fan blade 6 and the shaft core 5. Then, install the fan blade 6 with the shaft core 5 on the fan frame body 3, and insert the bottom of the connecting sleeve 10 into the buckle sleeve structure 9. The shaft core 5 is inserted into the oil-containing bearing 4. The buckle sleeve structure 9 cooperates with the docking sleeve 11 to fix the connecting sleeve 10, thereby completing the combined installation between the fan blade 6 and the fan frame body 3.

Claims

1. A fan blade anti-deflection groove, characterized in that: include: A fan frame body (3), wherein an oil-containing bearing (4) and a coil frame (8) are arranged on the fan frame body (3), and the coil frame (8) is arranged on the periphery of the oil-containing bearing (4); A shaft core (5), one end of the shaft core (5) being cooperatively connected to the oil-containing bearing (4); A fan blade (6), wherein the middle bottom end of the fan blade (6) is connected to a connecting sleeve (10), and the bottom end of the connecting sleeve (10) is cooperatively connected to the other end of the shaft core (5); Anti-deflection grooves (12), which are arranged in a plurality and are arranged at the top end of the middle portion of the fan blade (6); A resin portion (7), the resin portion (7) being arranged to wrap around the periphery of the middle portion of the fan blade (6), the resin portion (7) wrapping a portion of the connecting sleeve (10), a portion of the shaft core (5) and all of the anti-deflection grooves (12).

2. The fan blade anti-deviation groove according to claim 1, characterized in that: The anti-deviation grooves (12) are evenly distributed around the circumference and arranged at the top ends of the fan blades (6) and at the periphery of the shaft core (5).

3. The fan blade anti-deviation groove according to claim 2, characterized in that: The connecting sleeve (10) and the anti-deflection groove (12) are integrally formed and cast with the fan blade (6).

4. The fan blade anti-deviation groove according to claim 1, characterized in that: The top end of the coil frame (8) is provided with a buckle sleeve structure (9), and the bottom end of the connecting sleeve (10) is provided with a docking sleeve (11) that cooperates with the buckle sleeve structure (9) and docks with it.

5. The fan blade anti-deviation groove according to claim 4, characterized in that: An annular buffer portion (13) is provided in the middle of the buckle sleeve structure (9), and an abutment portion (16) is provided at the bottom end of the buckle sleeve structure (9).

6. The fan blade anti-deviation groove according to claim 5, characterized in that: The top end of the buckle sleeve structure (9) is provided with a conical portion (14), and the bottom end of the docking sleeve (11) is provided with an arc portion (15).

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