Dustproof and oil-leakage-proof direct-current brushless cooling fan

Abstract

The utility model relates to the technical field of direct-current brushless cooling fans, and discloses a dustproof and oil-leakage-proof direct-current brushless cooling fan which comprises a protective shell, fan blades, a dust collection box, a front cover, a direct-current brushless motor body and a leakage-proof block, and the front cover, the direct-current brushless motor body and the leakage-proof block are arranged in the protective shell. A shaft core is arranged at the end, corresponding to the fan blades, of the direct-current brushless motor body and connected with the fan blades in a matched mode, a leakage-proof block is arranged on the shaft core between the direct-current brushless motor body and the fan blades, and first connecting holes distributed in an axial symmetry mode are formed in the end face of the end, corresponding to the front cover, of the protective shell. The four corners of the end, correspondingly connected with the protective shell, of the front cover are provided with third connecting holes connected with the protective shell in a matched mode through screws, and the end face of the end, perpendicular to the front cover, of the bottom of the protective shell is provided with a dust collection box. And the dustproof and oil-leakage-proof effects of the cooling fan are effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of DC brushless cooling fans, in particular to a dust-proof and oil-leakage-proof DC brushless cooling fan. Background Art

[0002] Brushless DC cooling fans play a vital role in modern electronic devices, especially in applications requiring efficient heat dissipation. These fans are widely used due to their high efficiency, low noise, and long-term stability. Brushless DC technology uses electronic control to drive and rotate the motor. Compared to traditional brushed motors, this reduces mechanical friction, thereby reducing energy loss and noise. These motors offer not only high speeds and airflow rates, but also a long service life. These advantages have led to their widespread use in fields such as computers, communications equipment, and automotive electronics.

[0003] At present, traditional fans have problems such as long service life, loss of lubricating oil, resulting in loud noise and short life. Dust and fine particles enter the interior, hindering the lubrication effect and causing unstable operation. For this reason, we have proposed a dust-proof and oil-leakage-proof DC brushless cooling fan. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides a dust-proof and oil-leakage-proof DC brushless cooling fan, which solves the above-mentioned problems.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dust-proof and oil-leakage-proof DC brushless cooling fan, comprising a protective shell, fan blades, a dust collection box, a front cover, a DC brushless motor body and a leakage-proof block, wherein the interior of the protective shell is provided with a front cover, a DC brushless motor body and a leakage-proof block, an end of the DC brushless motor body corresponding to the fan blades is provided with an axis core that is cooperated and connected to the fan blades, and a leakage-proof block is provided on the axis core between the DC brushless motor body and the fan blades, an end face of the protective shell corresponding to the front cover is provided with a connection hole one that is axially symmetrically distributed, and the four corners of the front cover corresponding to the end connected to the protective shell are provided with connection holes three that are cooperated and connected to the protective shell by screws, and a dust collection box is provided at the end face of the bottom of the protective shell that is perpendicular to the front cover.

[0008] Preferably, the protective shell is a hollow rectangular box body as a whole, and a rear cover is provided on the end face of the outside of the protective shell facing away from the front cover, and the end face of the rear cover is provided with protective rods distributed in a circular shape and at equal intervals, and a DC brushless motor body is welded to the center of the end face of the inside of the protective shell corresponding to the rear cover, and a group of slots distributed in equal intervals are provided on the end face of the inside of the protective shell corresponding to the dust collection box, and a group of guide slide blocks distributed in an axially symmetrical manner are provided on the end face of the outside of the protective shell corresponding to the dust collection box, and a slide groove is formed between the two guide slide blocks.

[0009] Preferably, a leakage-proof and dust-proof protrusion is welded on the shaft core at one end of the DC brushless motor body corresponding to the connection of the fan blade, and two concentric sealing grooves are provided on the end face of the DC brushless motor body corresponding to the shaft core, and six connecting holes are provided in an equidistant annular distribution between the two sealing grooves on the end face of the DC brushless motor body corresponding to the shaft core.

[0010] Preferably, the leak-proof block as a whole has an axially symmetrical structure, and the end face of the leak-proof block corresponding to the end face connected to the DC brushless motor body is provided with two rubber sealing rings that are connected to the two sealing grooves, and a connecting hole 2 is provided between the two rubber sealing rings on the end face of the leak-proof block corresponding to the end face connected to the DC brushless motor body, which is fixedly connected to the DC brushless motor body by screws, and the end face of the leak-proof block facing away from the DC brushless motor body is provided with a leak-proof and dust-proof ring groove that is connected to the leak-proof and dust-proof protrusion, and the leak-proof and dust-proof protrusion and the leak-proof and dust-proof ring groove form a curved path.

[0011] Preferably, the interior of the dust box is a dust collecting tray, the side of the dust box is provided with a slide groove formed by the guide slide block and connected to two axially symmetrically distributed sliders, and the external axial end surface of the dust box is provided with a handle.

[0012] Preferably, the front cover body is a plate surface, and a protective net is provided at the center of the front cover.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the present invention provides a dust-proof and oil-leakage-proof DC brushless cooling fan, which has the following beneficial effects:

[0015] 1. This dust-proof and oil-leakage-proof DC brushless cooling fan adopts a curved oil seal structure composed of the shaft core of the DC brushless motor body and a leak-proof block, which greatly improves the sealing performance. That is, the dust-proof and oil-leakage-proof performance has great advantages over traditional structures and other sealing structures, ensuring the smooth operation of the cooling fan.

[0016] 2. This dust-proof and oil-leakage-proof DC brushless cooling fan has a dust collection box at the bottom to effectively collect impurity particles that accidentally enter the cooling fan, making it easier to clean and dispose of them later. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the dust-proof and oil-leakage-proof DC brushless cooling fan of the utility model;

[0018] Figure 2 The utility model is a cross-sectional schematic diagram of a dust-proof and oil-leakage-proof DC brushless cooling fan.

[0019] Figure 3 for Figure 2 A local enlarged schematic diagram of point A in the figure.

[0020] Figure 4 This is a schematic diagram of the protective shell of the utility model;

[0021] Figure 5 This is a schematic cross-sectional view of the leak-proof block of the utility model;

[0022] Figure 6 This is a schematic diagram of the dust collection box of the utility model;

[0023] Figure 7 It is a schematic diagram of the front cover of the present utility model.

[0024] In the figure: 1. Protective shell; 2. Fan blades; 3. Dust box; 4. Front cover; 5. DC brushless motor body; 6. Leakage-proof block; 7. Shaft core; 8. Curved path; 9. Leakage-proof and dust-proof protrusion; 10. Sealing groove; 11. Guide slide block; 12. Slot hole; 13. Connection hole one; 14. Rubber sealing ring; 15. Connection hole two; 16. Leakage-proof and dust-proof ring groove; 17. Slider; 18. Dust collecting tray; 19. Handle; 20. Protective net; 21. Connection hole three; 22. Rear cover. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, 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.

[0026] See also Figure 1-7, a dust-proof and oil-leakage-proof DC brushless cooling fan, comprising a protective shell 1, fan blades 2, a dust collecting box 3, a front cover 4, a DC brushless motor body 5 and a leakage-proof block 6. The protective shell 1 is provided with a front cover 4, a DC brushless motor body 5 and a leakage-proof block 6. The DC brushless motor body 5 is provided with a shaft core 7 at one end corresponding to the fan blade 2, which is connected to the fan blade 2, and a leakage-proof block 6 is provided on the shaft core 7 between the DC brushless motor body 5 and the fan blade 2. The protective shell 1 is provided with an axially symmetrically distributed connecting hole 13 on the end surface corresponding to the end connected to the front cover 4, and the front cover 4 is provided with three connecting holes 21 that are connected to the protective shell 1 through screws at the four corners of the end corresponding to the end connected to the protective shell 1, and a dust collecting box 3 is provided on the end surface of the bottom of the protective shell 1 at one end perpendicular to the front cover 4.

[0027] Furthermore, the protective shell 1 is a hollow rectangular box body as a whole, and a rear cover 22 is provided on the end face of the outside of the protective shell 1 facing away from the front cover 4, and a protective rod equidistantly distributed in a ring is provided on the end face of the rear cover 22. A DC brushless motor body 5 is welded to the center of the end face of the inside of the protective shell 1 corresponding to the rear cover 22, and a group of slots 12 are equidistantly distributed on the end face of the inside of the protective shell 1 corresponding to the dust box 3 are provided, and a group of guide slide blocks 11 are axially symmetrically distributed on the end face of the outside of the protective shell 1 corresponding to the dust box 3. A slide is formed between the two guide slide blocks 11, which facilitates the installation and fixation of the dust box 3 and improves the rationality of the structure.

[0028] Furthermore, a leakage-proof and dust-proof protrusion 9 is welded on the shaft core 7 at one end of the DC brushless motor body 5 corresponding to the connection with the fan blade 2, and two circles of concentric sealing grooves 10 are provided on the end face of the DC brushless motor body 5 corresponding to the shaft core 7. Six connecting holes are provided in an equidistant annular distribution between the two sealing grooves 10 on the end face of the DC brushless motor body 5 corresponding to the shaft core 7. The outside of the leakage-proof and dust-proof protrusion 9 is a cross-matching of equidistantly distributed protrusions and grooves. After forming a curved oil seal, the internal pressure can be effectively guaranteed to prevent the internal lubricating oil from leaking out and dust from entering.

[0029] Furthermore, the leak-proof block 6 as a whole has an axially symmetrical structure, and the end face of the leak-proof block 6 corresponding to the end face connected to the DC brushless motor body 5 is provided with two rubber sealing rings 14 that are connected to the two sealing grooves 10, and a connecting hole 2 15 that is fixedly connected to the DC brushless motor body 5 by screws is opened between the two rubber sealing rings 14 at the end face of the leak-proof block 6 corresponding to the end face connected to the DC brushless motor body 5, and the end face of the leak-proof block 6 facing away from the DC brushless motor body 5 is provided with a leak-proof dustproof ring groove 16 that is connected to the leak-proof dustproof protrusion 9, and the leak-proof dustproof protrusion 9 and the leak-proof dustproof ring groove 16 form a curved path 8, and lubricating oil will be injected into the curved path 8 in subsequent work to play a sealing role, effectively preventing dust from entering and oil from leaking out.

[0030] Furthermore, the interior of the dust box 3 is a dust collecting plate 18, and the side of the dust box 3 is provided with two axially symmetrically distributed sliders 17 that cooperate with the guide slide block 11 to connect the slide groove, and the external axial end face of the dust box 3 is provided with a handle 19. The dust box 3 effectively collects the impurities inside the cooling fan for subsequent unified processing.

[0031] Furthermore, the main body of the front cover 4 is a plate surface, and a protective net 20 is provided at the center of the front cover 4. Both the front cover 4 and the rear cover 22 play a protective role.

[0032] Working principle: correctly install the dust-proof and oil-leakage-proof DC brushless cooling fan according to the diagram. On the connecting end shaft core 7 where the DC brushless motor body 5 inside the cooling fan is connected to the fan blade 2, there is a curved path 8 composed of a leak-proof block 6 and the shaft core 7. Adding some lubricating oil inside the curved path 8 can form a curved path oil seal, and two circles of rubber sealing rings 14 and sealing grooves 10 are provided at one end of the leak-proof block 6 corresponding to the connection with the DC brushless motor body 5. Select an adapter screw to complete the end face connection and sealing with the DC brushless motor body 5 through the connecting hole 2 15 of the leak-proof block 6, thereby completing the dust-proof and oil-leakage-proof function of the shaft end of the brushless motor, and a dust box 3 is provided at the bottom of the protective shell 1. The dust box 3 can effectively collect impurities inside the cooling fan, which is convenient for subsequent unified treatment, and a front cover 4 and a rear cover 22 are provided at the front and back of the cooling fan respectively to play a protective role.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust-proof and oil-leakage-proof DC brushless cooling fan, comprising a protective shell (1), fan blades (2), a dust collection box (3), a front cover (4), a DC brushless motor body (5) and a leak-proof block (6), characterized in that: The protective shell (1) is provided with a front cover (4), a DC brushless motor body (5) and a leak-proof block (6) inside. The DC brushless motor body (5) is provided with a shaft core (7) at one end corresponding to the fan blade (2) and is connected to the fan blade (2), and a leak-proof block (6) is provided on the shaft core (7) between the DC brushless motor body (5) and the fan blade (2). The protective shell (1) is provided with a connection hole (13) distributed in an axisymmetric manner on the end surface corresponding to the front cover (4). The front cover (4) is provided with connection holes (21) at four corners of the end corresponding to the protective shell (1) and is connected to the protective shell (1) by screws. A dust collecting box (3) is provided on the end surface of the bottom of the protective shell (1) perpendicular to the front cover (4).

2. The dust-proof and oil-leakage-proof DC brushless cooling fan according to claim 1, characterized in that: The protective shell (1) is a hollow rectangular box body as a whole. A rear cover (22) is provided on the end face of the protective shell (1) facing away from the front cover (4), and a protective rod with an annular equidistant distribution is provided on the end face of the rear cover (22). A DC brushless motor body (5) is welded to the center of the end face of the protective shell (1) corresponding to the rear cover (22). A group of slots (12) with an equidistant distribution are provided on the end face of the protective shell (1) corresponding to the dust collection box (3). A group of guide slide blocks (11) with an axisymmetric distribution are provided on the end face of the protective shell (1) corresponding to the dust collection box (3). A slide is formed between the two guide slide blocks (11).

3. The dust-proof and oil-leakage-proof DC brushless cooling fan according to claim 2, characterized in that: A leak-proof and dust-proof bump (9) is welded on the shaft core (7) at one end of the DC brushless motor body (5) corresponding to the fan blade (2), and two concentric sealing grooves (10) are provided on the end surface of the DC brushless motor body (5) corresponding to the shaft core (7), and six connecting holes are provided between the two sealing grooves (10) at the end surface of the DC brushless motor body (5) corresponding to the shaft core (7) at one end, and are distributed in an equidistant annular pattern.

4. The dust-proof and oil-leakage-proof DC brushless cooling fan according to claim 1, characterized in that: The leak-proof block (6) is an overall axially symmetrical structure. The leak-proof block (6) is provided with two rubber sealing rings (14) connected to the two sealing grooves (10) at one end surface corresponding to the DC brushless motor body (5), and a second connection hole (15) is provided between the two rubber sealing rings (14) at one end surface corresponding to the DC brushless motor body (5) for fixed connection to the DC brushless motor body (5) by screws. The leak-proof block (6) is provided with a leak-proof dustproof ring groove (16) connected to the leak-proof dustproof protrusion (9) at one end surface facing away from the DC brushless motor body (5), and the leak-proof dustproof protrusion (9) and the leak-proof dustproof ring groove (16) form a curved path (8).

5. The dust-proof and oil-leakage-proof DC brushless cooling fan according to claim 2, characterized in that: The interior of the dust collecting box (3) is a dust collecting tray (18), and the side of the dust collecting box (3) is provided with a slide groove formed by the guide slide block (11) and connected to two slide blocks (17) distributed in an axial symmetrical manner. The outer axial end surface of the dust collecting box (3) is provided with a handle (19).

6. The dust-proof and oil-leakage-proof DC brushless cooling fan according to claim 2, characterized in that: The main body of the front cover (4) is a plate surface, and a protective net (20) is provided at the center of the front cover (4).

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