Single ball bearing cooling fan

Abstract

The utility model discloses a single ball bearing heat dissipation fan, including motor drive assembly, fan blade assembly, outer frame, ball bearing, spring and snap spring, ball bearing is 830 bearing, ball bearing, motor drive assembly and fan blade assembly are installed in the outer frame coaxially in order, one end of spring abuts against the fan blade assembly, the other end of spring abuts against the fan blade assembly, and the snap spring abuts against the fan blade assembly. The other end of the spring abuts against the ball bearing. The clamping spring is attached to the end, away from the spring, of the ball bearing. According to the cooling fan, the 830-model ball bearing is adopted to replace two 630-model ball bearings, and the cost of the whole cooling fan is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation fans, in particular to a heat dissipation fan with a single ball bearing. Background Art

[0002] The existing thin-type 4010, 5010, 6010 and other bearings on the market use double ball bearings, and the bearing model is 520 bearings, that is, the outer diameter is 5mm and the inner diameter is 2mm. When choosing this type of bearing, two 520 bearings must be used at the same time; the price of 520 bearings is relatively smooth, and the price of a single 520 bearing is about 60% more expensive than a single 830 bearing. In addition, the damage rate of the 520 bearing production line is relatively high.

[0003] Therefore, this application designs a single ball bearing cooling fan, which uses only one 830 bearing to replace the original two 520 bearings, reducing the bearing cost by about 70% and the overall cost of the fan by about 30%. Utility Model Content

[0004] The utility model provides a single ball bearing heat dissipation fan, aiming to solve the above problems.

[0005] According to an embodiment of the present application, a single ball bearing cooling fan is provided, including: a motor drive assembly, a fan blade assembly, an outer frame, a ball bearing, a spring and a retaining spring, the model of the ball bearing is an 830 bearing, the ball bearing, the motor drive assembly and the fan blade assembly are coaxially installed in the outer frame in sequence, one end of the spring abuts against the fan blade assembly, and the other end of the spring abuts against the ball bearing; the retaining spring is attached to the end of the ball bearing away from the spring.

[0006] In the single ball bearing cooling fan of the present invention, the motor drive assembly includes enameled wire, a plastic-coated silicon steel sheet, and a PCB board. The PCB board is arranged close to the bottom wall of the outer frame. The enameled wire is wound around the plastic-coated silicon steel sheet, and the enameled wire is connected to the PCB board.

[0007] In the single ball bearing cooling fan of the present invention, the fan blade assembly includes a fan blade shell, a motor shell and a magnetic strip. The magnetic strip is annular in shape. The motor shell has a first mounting groove. The magnetic strip is arranged in the motor shell, and the magnetic strip is sleeved on the outside of the plastic-coated silicon steel sheet.

[0008] In the single ball bearing heat dissipation fan of the present invention, the fan blade housing includes a second mounting groove, and the motor housing is arranged in the second mounting groove.

[0009] In the single ball bearing cooling fan of the present invention, a mounting shaft is included at the center position of the second mounting groove, the spring is sleeved on the mounting shaft, and one end of the spring abuts against the bottom wall of the mounting groove, and the other end of the spring abuts against the ball bearing; the mounting shaft passes through the ball bearing, the retaining spring is sleeved on the mounting shaft, and the retaining spring is attached to the end of the ball bearing away from the spring.

[0010] The single ball bearing cooling fan of the present invention further includes a wire, one end of which is connected to the PCB board, and the other end of which extends out of the outer frame.

[0011] The technical solution provided by the embodiments of the present application may include the following beneficial effects: The present application designs a single ball bearing cooling fan, which uses only one 830 bearing to replace the original two 520 bearings, reducing the bearing cost by about 70%, and the overall cost of the fan can be reduced by about 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a schematic structural diagram of a heat dissipation fan according to an embodiment of the present utility model;

[0014] Figure 2 This is an exploded schematic diagram of a cooling fan according to an embodiment of the present invention;

[0015] Figure 3 It is a cross-sectional schematic diagram of the heat dissipation fan according to an embodiment of the present utility model.

[0016] Description of labels:

[0017] 10. Motor drive assembly; 11. Enameled wire; 12. Plastic-coated silicon steel sheet; 13. PCB board; 20. Fan blade assembly; 21. Fan blade housing; 211. Second mounting slot; 212. Mounting shaft; 22. Motor housing; 221. First mounting slot; 23. Magnetic strip; 30. Outer frame; 31. Placement slot; 40. Ball bearing; 50. Spring; 60. Retaining spring; 70. Wire. DETAILED DESCRIPTION

[0018] 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 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.

[0019] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0020] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0021] Please refer to Figure 1-Figure 3 As shown, the present invention discloses a single ball bearing cooling fan, comprising a motor drive assembly 10, a fan blade assembly 20, an outer frame 30, a ball bearing 40, a spring 50, and a retaining spring 60. The ball bearing 40 is an 830 bearing. By replacing two 520 bearings on the market with a single ball bearing 40, the present invention reduces the bearing cost by approximately 70%, which is approximately 30% lower than the overall product cost, significantly reducing costs.

[0022] In this embodiment, the ball bearing 40, the motor drive assembly 10, and the fan assembly 20 are coaxially mounted in the outer frame 30. One end of the spring 50 abuts against the fan assembly 20, and the other end of the spring 50 abuts against the ball bearing 40. The retaining spring 60 is attached to the end of the ball bearing 40 away from the spring 50.

[0023] In this embodiment, the motor drive assembly 10 includes an enameled wire 11, a plastic-coated silicon steel sheet 12, and a printed circuit board 13. The printed circuit board 13 is disposed near the bottom wall of the outer frame 30. The enameled wire 11 is wound around the plastic-coated silicon steel sheet 12 and connected to the printed circuit board 13.

[0024] The fan blade assembly 20 includes a fan blade shell 21, a motor shell 22 and a magnetic strip 23. The magnetic strip 23 is annular in shape. The motor shell 22 has a first mounting groove 221. The magnetic strip 23 is arranged in the motor shell 22, and the magnetic strip 23 is sleeved on the outside of the plastic-coated silicon steel sheet 12. The fan blade shell 21 includes a second mounting groove 211. The motor shell 22 is arranged in the second mounting groove 211. The center position of the second mounting groove 211 includes a mounting shaft 212. The spring 50 is sleeved on the mounting shaft 212. One end of the spring 50 abuts against the bottom wall of the mounting groove, and the other end of the spring 50 abuts against the ball bearing 40. The mounting shaft 212 passes through the ball bearing 40. The retaining spring 60 is sleeved on the mounting shaft 212, and the retaining spring 60 is attached to the end of the ball bearing 40 away from the spring 50.

[0025] In this embodiment, a placement groove 31 is provided at a position of the outer frame 30 corresponding to the ball bearing 40 , and the ball bearing 40 is installed in the placement groove 31 , and then the roller bearing is blocked by the plastic-coated silicon steel sheet 12 .

[0026] In this embodiment, the single ball bearing 40 cooling fan further includes a wire 70 , one end of which is connected to the PCB board 13 , and the other end of the wire 70 extends out of the outer frame 30 to connect to an external power supply component.

[0027] During the assembly process, the enameled wire 11, plastic-coated silicon steel sheet 12, and PCB board 13 are first assembled into the motor drive assembly 10 through processes such as winding and soldering. The fan housing 21, motor housing 22, and magnetic strip 23 are then assembled using a jig to form the fan assembly 20. The ball bearing 40 is then installed into the placement slot 31 of the outer frame 30, followed by the spring 50, which is then secured with a retaining spring 60 to complete the finished cooling fan.

[0028] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A single ball bearing cooling fan, characterized in that: include: A motor drive assembly, a fan blade assembly, an outer frame, a ball bearing, a spring and a retaining spring, wherein the ball bearing model is an 830 bearing, and the ball bearing, the motor drive assembly and the fan blade assembly are coaxially installed in the outer frame in sequence, one end of the spring abuts against the fan blade assembly, and the other end of the spring abuts against the ball bearing; the retaining spring is attached to the end of the ball bearing away from the spring.

2. The single ball bearing cooling fan according to claim 1, characterized in that: The motor drive assembly includes an enameled wire, a plastic-coated silicon steel sheet, and a PCB board. The PCB board is arranged close to the bottom wall of the outer frame. The enameled wire is wound around the plastic-coated silicon steel sheet and is connected to the PCB board.

3. The single ball bearing cooling fan according to claim 2, characterized in that: The fan blade assembly includes a fan blade shell, a motor shell and a magnetic strip. The magnetic strip is annular in shape. The motor shell has a first mounting groove. The magnetic strip is arranged in the motor shell and is sleeved on the outside of the plastic-coated silicon steel sheet.

4. The single ball bearing cooling fan according to claim 3, characterized in that: The fan blade housing includes a second mounting groove, and the motor housing is arranged in the second mounting groove.

5. The single ball bearing cooling fan according to claim 4, characterized in that: The center position of the second mounting groove includes a mounting shaft, the spring is sleeved on the mounting shaft, and one end of the spring abuts against the bottom wall of the mounting groove, and the other end of the spring abuts against the ball bearing; the mounting shaft passes through the ball bearing, the retaining spring is sleeved on the mounting shaft, and the retaining spring is attached to the end of the ball bearing away from the spring.

6. The single ball bearing cooling fan according to claim 2, characterized in that: It also includes a wire, one end of which is connected to the PCB board, and the other end of which extends out of the outer frame.

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