Bearing assembly, motor and wind-driven device

Abstract

A bearing assembly is provided to solve the problem that water vapor or dust easily enters the bearing. The bearing assembly includes a shaft tube having an open end, a bearing located in the shaft tube, a positioning member located at the open end, the positioning member having a through hole, and a rotating shaft rotatably coupled to the bearing by the through hole, and a lubricating grease is filled between the through hole and the rotating shaft. The present application also relates to a motor and a wind driving device. The bearing service life is improved.

Description

Technical Field

[0001] This utility model relates to a motor part, and more particularly to a bearing assembly, motor, and air drive device within a motor. Background Technology

[0002] Motors typically combine bearings and bearing assemblies such as shafts or rotors. When the motor is installed in an electronic device, the bearing assembly is easily exposed to environmental conditions with moisture or dust. Moisture or dust particles can easily enter the bearing, causing the lubricating oil to deteriorate and the metal components of the bearing to corrode, resulting in a decrease in the performance and lifespan of the motor system.

[0003] In view of this, there is indeed a need to improve the existing bearing assemblies. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide a bearing assembly and motor that can prevent moisture or dust particles from entering the bearing.

[0005] The directional terms or similar terms used throughout this utility model, such as "front", "back", "left", "right", "top", "bottom", "inner", "outer", "side", etc., are mainly for reference to the directions in the accompanying drawings. Each directional term or similar term is only used to assist in explaining and understanding the various embodiments of this utility model and is not intended to limit this utility model.

[0006] The use of the quantifiers “a” or “an” for the elements and components described throughout this utility model is merely for convenience and to provide the general meaning of the scope of this utility model; in this utility model, it should be interpreted as including one or at least one, and a single concept also includes multiple cases, unless it clearly means otherwise.

[0007] The terms “first,” “second,” … and “Nth” used throughout this utility model are mainly used to distinguish different elements or features (such as elements, directions, or steps), and do not indicate the maximum or minimum number of these elements or features possessed by a corresponding subject or method, nor do they limit the order of priority.

[0008] The terms "combination," "integration," or "assembly" used throughout this utility model mainly include those that allow for separation without damaging the components after connection, or those that make the components inseparable after connection. Those skilled in the art can choose the appropriate term based on the material of the components to be connected or the assembly requirements.

[0009] The bearing assembly of this utility model includes: a shaft tube having an open end; a bearing located in the shaft tube; a positioning member located in the open end, the positioning member having a through hole; and a rotating shaft rotatably connected to the bearing through the through hole, the gap between the through hole and the rotating shaft being filled with grease.

[0010] Therefore, in the bearing assembly of this utility model, the positioning member is located at the open end of the shaft tube, and the grease is filled between the through hole of the top plate of the positioning member and the rotating shaft. The grease can seal the gap between the through hole and the rotating shaft to prevent contaminants such as water vapor or dust from entering the shaft tube, which would lead to deterioration of the lubricating oil and corrosion of the metal components, causing abnormalities in the bearing. This can achieve the effect of improving the service life of the bearing.

[0011] The positioning member has a top plate axially positioned opposite the opening end, with a through hole penetrating through the top plate. The positioning member also has a side wall, one end of which is connected to the top plate, and the side wall radially engages with the outer peripheral wall of the shaft tube. Thus, the positioning member effectively enhances the structural strength of the bearing assembly at the shaft tube.

[0012] The sidewall portion is tightly fitted to the outer peripheral wall of the shaft tube. Thus, this positioning element enhances the structural strength of the bearing assembly at the shaft tube.

[0013] At least a portion of the sidewall is radially positioned opposite the bearing. Thus, the shaft tube can be located between the locating member and the bearing, thereby enhancing the structural strength of the bearing assembly at the shaft tube.

[0014] The top plate abuts against the bearing. In this way, the positioning element can prevent the bearing from coming off the shaft tube.

[0015] The top plate shields the bearing. This positioning element prevents the bearing from detaching from the shaft tube.

[0016] The positioning component is made of metal. This gives the bearing assembly better structural strength.

[0017] The grease fills the space between the positioning member and the shaft tube, immersing the bearing in the grease. This further isolates the bearing from contaminants such as moisture or dust.

[0018] The gap between the through hole and the rotating shaft is sealed by the grease. In this way, the grease can seal the gap between the through hole and the rotating shaft, thereby preventing contaminants such as moisture or dust from entering the shaft tube.

[0019] The bearing is an oil-impregnated bearing, and the base oil of the grease has components compatible with the bearing's lubricating oil. Thus, the grease within the shaft tube provides lubrication to both the bearing and the shaft.

[0020] The motor of this invention includes: a bearing assembly as described above, the rotating shaft being coupled to a hub, the hub being coupled to a magnet assembly; and a stator surrounding the shaft tube, the stator driving the hub to rotate. In this way, the grease can seal the gap between the through hole and the rotating shaft, preventing contaminants such as moisture or dust from entering the shaft tube, which could lead to lubricant deterioration, corrosion of metal components, and bearing malfunctions, thus extending the bearing's service life.

[0021] The positioning element has a seepage-proof channel between itself and the hub. This seepage-proof channel is a bent channel with at least two extending directions. This effectively prevents moisture or dust particles from reaching the open end of the shaft tube through the seepage-proof channel.

[0022] The positioning element and the hub form a first radial clearance and an axial clearance. Thus, the anti-seepage channel can have at least two directions of bending, effectively preventing moisture or dust particles from reaching the opening end of the shaft tube.

[0023] The wheel hub includes a magnet assembly positioning section. The magnet assembly is located within this positioning section, and the positioning section is radially opposed to the sidewall of the positioning member, creating a second radial gap between the positioning section and the sidewall. This design creates at least two bends in the seepage-proof channel, preventing the passage of water vapor or dust particles and further achieving waterproofing and dustproofing.

[0024] The positioning element is radially opposite to the magnet assembly, and the positioning element is made of a magnetically conductive material. Thus, the positioning element can create a magnetic attraction force on the metal hub, thereby preventing the hub from detaching from the bearing assembly.

[0025] The wind-driving device of this utility model includes: the aforementioned motor; and a fan wheel having a hub and several fan blades arranged around the hub. In this way, the lubricating grease can seal the gap between the through hole and the rotating shaft, preventing contaminants such as moisture or dust from entering the shaft tube, which could lead to lubricant deterioration, corrosion of metal components, and bearing malfunctions, thus extending the bearing's service life. Attached Figure Description

[0026] Figure 1 : A cross-sectional view of the first embodiment of this utility model; Figure 2 : Cross-sectional view of the second embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures: 1: Shaft tube 11: Base Plate 12: Encircling wall 12a: Closed end 12b: Open end 13: Position the shoulder 2: Bearings 2a: End face 21: Shaft Hole 3: Positioning components 3a: Through hole 31: Top plate 32: Side wall section 33: Shoulders 4: Stator 41: Base 42: Excitation Assembly 5: Rotor 51: Wheel hub 52: Magnet assembly 53: Magnet assembly positioning section B: Bearing assembly T: Shaft O: Lubricating grease M: Motor R: Anti-seepage channel R1: First radial clearance R2: Axial clearance R3: Second radial clearance F: Wind drive device F1: Fan Wheel F2: Fan blade. Detailed Implementation

[0028] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments of this utility model are described below in detail with reference to the accompanying drawings; in addition, those symbols that are marked with the same symbols in different drawings are considered to be the same and their descriptions will be omitted.

[0029] Please refer to Figure 1 As shown, it is a preferred embodiment of the bearing assembly B of the present invention, which includes a shaft tube 1, a bearing 2 and a positioning member 3. The bearing 2 is located inside the shaft tube 1, and the positioning member 3 is attached to one end of the shaft tube 1.

[0030] The shaft tube 1 may have a base plate 11 and an annular wall 12. One end of the annular wall 12 may be formed into a closed end 12a by the base plate 11, and the other end of the annular wall 12 may be formed into an open end 12b. Thus, the shaft tube 1 can be used to position the bearing 2, and the shaft tube 1 can be used to contain lubricating oil or grease. In this embodiment, the shaft tube 1 is filled with grease (described in detail later). The shaft tube 1 may have a positioning shoulder 13, which may be adjacent to the base plate 11, and the positioning shoulder 13 can be used for the bearing 2 to abut against.

[0031] The bearing 2 is located inside the shaft tube 1. The bearing 2 may have two end faces 2a, which are axially opposite each other. One end face 2a may face the open end 12b of the shaft tube 1, and the other end face 2a may face the base plate 11. The bearing 2 has a shaft hole 21 that passes through the two end faces 2a.

[0032] The positioning element 3 can be located at the open end 12b of the shaft tube 1. The positioning element 3 can be attached to the shaft tube 1 by means of, for example, tight fit, welding, or gluing. The positioning element 3 can have a through hole 3a that axially extends through the positioning element 3, so that a rotating shaft T can be inserted into the through hole 3a. Specifically, the positioning element 3 can have a top plate 31 that axially faces the open end 12b. The through hole 3a can extend through the top plate 31. The top plate 31 can shield the bearing 2. Preferably, the top plate 31 can abut against the bearing 2 to prevent the bearing 2 from dislodging from the shaft tube 1.

[0033] Furthermore, the gap between the through hole 3a of the top plate 31 and the rotating shaft T can be filled with a bearing grease. The bearing grease O can be, for example, polyurea grease, lithium complex grease, fluorinated grease, or silicone grease. The bearing grease O can be in paste form. This allows the bearing grease to seal the gap between the through hole 3a and the rotating shaft T, preventing contaminants such as moisture or dust from entering the shaft tube 1. In this embodiment, the bearing grease O can fill the space formed between the positioning member 3 and the shaft tube 1. That is, the bearing grease O can fill the space between the bearing 2 and the base plate 11, or / and the radially opposite space between the bearing 2 and the shaft tube 1, or / and the space between the bearing 2 and the positioning member 3, so that the bearing 2 can be immersed in the bearing grease O, thereby further isolating it from contaminants such as moisture or dust. Furthermore, it should be noted that the bearing 2 can be an oil-impregnated bearing, and the base oil of the grease O can have components compatible with the lubricating oil of the bearing 2. Therefore, the grease O can lubricate the bearing 2 and the shaft T within the shaft tube 1.

[0034] The positioning member 3 may have a side wall portion 32, one end of which is connected to the top plate 31. The side wall portion 32 may be radially engaged with the outer peripheral wall of the shaft tube 1. For example, the side wall portion 32 may be tightly fitted to the outer peripheral wall of the shaft tube 1. Furthermore, at least a portion of the side wall portion 32 may be radially positioned opposite the bearing 2. Preferably, the side wall portion 32 may be circumferentially surrounding the outer peripheral wall of the shaft tube 1. Thus, the positioning member 3 can enhance the structural strength of the bearing assembly B at the shaft tube 1. Furthermore, the positioning member 3 may be made of metal, thereby giving the bearing assembly B better structural strength.

[0035] Please continue reading. Figure 1 As shown, the bearing assembly B of this utility model can be installed on a motor M. The motor M may have a stator 4, the stator 4 may have a base 41, and the shaft tube 1 is located on the base 41. The shaft tube 1 may be integrally formed with the base 41, or the shaft tube 1 may be assembled and connected to the base 41. The stator 4 has an excitation assembly 42, which may be located on the base 41 and surrounds the shaft tube 1. The excitation assembly 42 may include, for example, elements capable of generating a magnetic field such as coils.

[0036] The motor M may have a rotor 5, which may have a shaft T and a hub 51. The shaft T is rotatably connected to the bearing assembly B, and the hub 51 is connected to one end of the shaft T. The rotor 5 has a magnet assembly 52, which is connected to the hub 51 and is axially aligned with the excitation assembly 42. Thus, the excitation assembly 42 and the magnet assembly 52 can form a magnetic linkage to drive the rotor 5 to rotate. Notably, the positioning member 3 is axially opposed to the hub 51, and a seepage-proof channel R may be provided between the positioning member 3 and the hub 51. The seepage-proof channel R may have a bent channel extending in at least two directions to prevent water vapor or dust particles from reaching the opening end 12b of the shaft tube 1 through the seepage-proof channel R. In addition, the motor M of this utility model can be installed in a wind-driving device F, which can have a fan wheel F1, the fan wheel F1 having a hub 51 and several fan blades F2, the several fan blades F2 being arranged around the hub 51.

[0037] Furthermore, the seepage-proof channel R can be formed by the gap between the positioning member 3 and the hub 51. The seepage-proof channel R can include a straight channel, a bend, or a zigzag channel. In this embodiment, the positioning member 3 can form a shoulder 33 by reducing its diameter between the top plate 31 and the side wall portion 32. A first radial gap R1 and an axial gap R2 can be formed between the shoulder 33 and the hub 51. In this way, the seepage-proof channel R can form a channel with at least one bend, thereby preventing water vapor or dust particles from passing through, and further achieving the functions of waterproofing and dustproofing. In addition, the positioning member 3 is preferably made of a magnetic material. The positioning member 3 can be radially opposite to the magnet assembly 52. ​​The attraction force of the positioning member 3 to the magnet assembly 52 can prevent the hub 51 and the shaft T from detaching from the bearing assembly B.

[0038] Please refer to Figure 2 As shown, this is the second embodiment of the motor M of this utility model. Compared with the first embodiment, in this embodiment, the hub 51 may have a magnet assembly positioning part 53, and the magnet assembly 52 may abut against the magnet assembly positioning part 53 to form a positioning on the hub 51. For example, the magnet assembly positioning part 53 may be a groove or a partition wall. In this embodiment, the magnet assembly positioning part 53 may be a partition wall extending axially toward the excitation assembly 42, and the magnet assembly positioning part 53 and the side wall part 32 of the positioning member 3 are radially opposite each other. Therefore, the positioning member 3 and the hub 51 can form the first radial gap R1 and the axial gap R2 through the shoulder 33, and a second radial gap R3 can be formed between the magnet assembly positioning part 53 and the side wall part 32. In this way, the seepage prevention channel R can form at least two bent channels, thereby preventing water vapor or dust particles from passing through, and further achieving the functions of waterproofing and dustproofing.

[0039] In summary, the bearing assembly and motor of this utility model, with the positioning member located at the open end of the shaft tube, and the grease filling the gap between the through hole of the top plate of the positioning member and the rotating shaft, can seal the gap between the through hole and the rotating shaft to prevent contaminants such as water vapor or dust from entering the shaft tube, causing deterioration of the lubricating oil and corrosion of metal components, thus causing abnormalities in the bearing, thereby achieving the effect of improving the service life of the bearing.

[0040] Although the present invention has been disclosed using the above preferred embodiments, it is not intended to limit the present invention. Any modifications and alterations made by those skilled in the art to the above embodiments without departing from the spirit and scope of the present invention shall still fall within the technical scope protected by the present invention. Therefore, the protection scope of the present invention shall include all changes within the meaning and equivalent scope of the appended claims. Furthermore, when the above embodiments can be combined, the present invention includes any combination of embodiments.

Claims

1. A bearing assembly, characterized in that, include: A shaft tube having an open end; A bearing is located in the shaft tube; A positioning element, located at the open end, having a through hole; and A shaft is rotatably connected to the bearing via the through-hole, and the gap between the through-hole and the shaft is filled with grease.

2. The bearing assembly as claimed in claim 1, characterized in that, The positioning element has a top plate axially positioned opposite the opening end, the through hole passing through the top plate, and a side wall portion connected at one end to the top plate and radially coupled to the outer peripheral wall of the shaft tube.

3. The bearing assembly as described in claim 2, characterized in that, The side wall is tightly fitted to the outer peripheral wall of the shaft tube.

4. The bearing assembly as described in claim 2, characterized in that, At least a portion of the sidewall is radially positioned relative to the bearing.

5. The bearing assembly as described in claim 2, characterized in that, The top plate abuts against the bearing.

6. The bearing assembly as claimed in claim 2, characterized in that, The top plate covers the bearing.

7. The bearing assembly as claimed in claim 2, characterized in that, The positioning component is made of metal.

8. The bearing assembly as claimed in claim 1, characterized in that, The grease fills the space formed between the positioning element and the shaft tube, immersing the bearing in the grease.

9. The bearing assembly as claimed in claim 1, characterized in that, The gap between the through hole and the shaft is sealed by the grease.

10. The bearing assembly as claimed in claim 1, characterized in that, This bearing is an oil-impregnated bearing.

11. A motor, characterized in that, include: A bearing assembly as claimed in any one of claims 1 to 10, wherein the shaft is coupled to a hub, and the hub is coupled to a magnet assembly; and A stator, surrounding the shaft tube, drives the hub to rotate.

12. The motor as claimed in claim 11, characterized in that, The positioning element has a seepage-proof channel between itself and the wheel hub, which is a bent channel with at least two directions of extension.

13. The motor as claimed in claim 12, characterized in that, The positioning element forms a first radial clearance and an axial clearance with the wheel hub.

14. The motor as claimed in claim 13, characterized in that, The wheel hub has a magnet assembly positioning part, the magnet assembly is located in the magnet assembly positioning part, the magnet assembly positioning part is radially opposite to the side wall of the positioning member, so that the magnet assembly positioning part and the side wall form a second radial gap.

15. The motor as claimed in claim 11, characterized in that, The positioning element is radially opposite to the magnet assembly, and the positioning element is made of a magnetically conductive material.

16. A wind-driving device, characterized in that, include: A motor as described in any one of claims 11 to 15; and A fan wheel has a hub and several fan blades arranged around the hub.

Images