Bearing system and fan device

Abstract

A bearing system and a fan device, the bearing system includes a bearing, a shaft and a base. The shaft includes a shaft portion and a bottom plate, opposite surfaces of the bottom plate form a first surface and a second surface, the shaft portion is erected on the first surface, at least one of the first surface and the second surface is provided with a plurality of guide grooves, the shaft portion of the shaft is fitted in a shaft hole of the bearing, and the bottom plate of the shaft is arranged at a bottom end of the bearing. The top end of the base has a receiving space, the bearing is fixed to the base by screwing or interference, and the bottom end of the bearing and the bottom plate of the shaft are fitted in the receiving space, the bottom plate of the shaft can rotate in the receiving space, the plurality of guide grooves can guide the flow of lubricating fluid to generate pressure and produce axial positioning effect, and the shaft is kept stable during rotation by the pressure of the oil film.

Description

Technical Field

[0001] This utility model relates to a bearing system, and more particularly to a bearing system and fan device with optional vibration damping and stability. Background Technology

[0002] Please see Figure 1 and Figure 2 The existing bearing system includes a bearing housing 1a, a bearing 2a, a shaft 3a, a wear-resistant plate 4a, a fixing plate 5a, and a fixing ring 6a. The bearing 2a is installed inside the bearing housing 1a, the shaft 3a is installed inside the bearing 2a, the wear-resistant plate 4a is located inside the bearing housing 1a and at the lower end of the shaft 3a, the fixing plate 5a is located at the lower end of the bearing 2a, the fixing plate 5a is used to position the shaft 3a and prevent the shaft 3a from dislodging, and the fixing ring 6a is installed at the upper end of the bearing housing 1a to press and fix the bearing 3a. The stator 7a can be assembled to the outside of the bearing housing 1a, and the fan blade 8a can be assembled to the upper end of the shaft 3a. The rotor 9a is fixed to the inside of the fan blade 8a, thus forming a fan assembly.

[0003] The existing bearing system described above requires components such as wear-resistant plates, retaining plates, and retaining rings, resulting in a complex structure that is difficult to assemble, making it hard to improve the pass rate. Furthermore, this bearing system can only achieve lateral positioning, not axial positioning, making it difficult to provide selectable vibration damping and stability, and the fan blades are prone to wobbling and swaying during rotation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a bearing system and fan device that address the shortcomings of the prior art. These systems can greatly simplify the overall structure, facilitate assembly, provide optional vibration damping and stability, prevent the fan blades from wobbling during rotation, facilitate changes in the height of the fan device to maintain stable operation, and make the installation angle of the fan device more flexible and versatile.

[0005] To solve the above-mentioned technical problems, this utility model provides a bearing system, comprising: a bearing having a bearing body with a shaft hole formed therein; a shaft having a shaft portion and a base plate integrally formed thereon, the base plate having a first surface and a second surface on opposite sides, the shaft portion standing upright on the first surface of the base plate, at least one of the first surface and the second surface having a plurality of guide grooves, the shaft portion of the shaft fitting into the shaft hole of the bearing, and the base plate of the shaft being disposed at the bottom end of the bearing body; and a base having a seat having a receiving space at the top end of the seat, the bearing being fixed to the seat of the base, the bottom end of the bearing body and the base plate of the shaft fitting into the receiving space, and the base plate of the shaft being rotatable within the receiving space.

[0006] Optionally, the bearing body has an external thread near the bottom, and the base has an internal thread. The internal thread is located at the outer edge of the accommodating space, and the external thread and the internal thread are screwed together.

[0007] Optionally, a ring portion is provided on the outer side of the bearing body, the ring portion is arranged around the outer side of the bearing body, and the ring portion can abut against the top end of the seat.

[0008] Optionally, the outer side of the bearing body near the bottom is fixed to the seat, the bearing body extends partially out of the seat, and the top of the bearing body is higher than the top of the seat.

[0009] To solve the aforementioned technical problems, this utility model also provides a fan device, comprising: a bearing having a bearing body with a shaft hole formed therein; a shaft having a shaft portion and a base plate integrally formed thereon, the shaft portion and the base plate having a first surface and a second surface formed on opposite sides of the base plate, the shaft portion standing upright on the first surface of the base plate, at least one of the first surface and the second surface having a plurality of guide grooves, and the shaft portion fitting into the shaft hole of the bearing. The base plate of the shaft is disposed at the bottom end of the bearing body; a base having a body, the top end of the body having an accommodating space, the bearing being fixed to the body of the base, the bottom end of the bearing body and the base plate of the shaft fitting in the accommodating space, the base plate of the shaft being rotatable in the accommodating space; a stator, the stator being sleeved and fixed to the outside of the bearing body; a fan blade, the fan blade being assembled to the upper end of the shaft portion of the shaft; and a rotor, the rotor being fixed to the inside of the fan blade.

[0010] Optionally, the bearing body has an external thread near the bottom, and the base has an internal thread. The internal thread is located at the outer edge of the accommodating space, and the external thread and the internal thread are screwed together.

[0011] Optionally, a ring portion is provided on the outer side of the bearing body, the ring portion is arranged around the outer side of the bearing body, and the ring portion can abut against the top end of the seat.

[0012] Optionally, the outer side of the bearing body near the bottom is fixed to the seat, the bearing body extends partially out of the seat, and the top of the bearing body is higher than the top of the seat.

[0013] The beneficial effects of this utility model are that the bearing system and fan device provided by this utility model eliminate the need for components such as wear-resistant plates, fixing plates, and fixing pressure rings found in existing fans, thus greatly simplifying the overall structure and facilitating assembly. This utility model directly fixes the bearing to the base, ensuring stable bearing positioning and achieving both axial and radial positioning effects. This provides selectable vibration damping and stability, and prevents the fan blades from wobbling during rotation. It also allows for adjustments to the fan device's height as needed, facilitates changes in fan height, maintains stable operation, and provides greater flexibility in the fan device's installation angle. Furthermore, it offers selectable versatility, making it suitable for applications such as automotive devices, laser scanners, and 3C products.

[0014] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the disassembled state of an existing fan assembly.

[0016] Figure 2 This is a schematic diagram of the existing fan assembly configuration.

[0017] Figure 3 This is a schematic diagram showing the disassembled state of the bearing system according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the bearing system assembly state according to an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the disassembled bearing system according to another embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the bearing system assembly state according to another embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram of the fan device according to an embodiment of the present invention.

[0022] Figure 8 This is a perspective view of the axis of an embodiment of the present invention.

[0023] Figure 9 This is a flowchart illustrating the manufacturing method of the bearing system according to an embodiment of the present invention. Detailed Implementation

[0024] [Example]

[0025] Please see Figure 3 and Figure 4 This utility model provides a bearing system, which includes a bearing 1, a shaft 2 and a base 3.

[0026] The type of bearing 1 is not limited. The bearing 1 disclosed in this embodiment can be a hydrodynamic bearing, etc. The bearing 1 has a bearing body 11, which is a hollow cylinder. A shaft hole 12 is formed inside the bearing body 11. The shaft hole 12 is a circular hole. The inner wall (inner surface) of the shaft hole 12 may be provided with at least one set of oil guiding grooves 13. Since the bearing 1 is prior art and this utility model does not limit the type of bearing 1, it will not be described in detail.

[0027] The shaft 2 includes a shaft portion 21 and a base plate 22, which are integrally formed. The shaft portion 21 is a circular shaft, and the base plate 22 is a circular plate. The shaft portion 21 stands upright on the base plate 22, and the diameter of the base plate 22 is larger than the diameter of the shaft portion 21. The two opposite surfaces of the base plate 22 form a first surface 221 and a second surface 222, which are parallel to each other. The shaft portion 21 stands upright on the first surface 221 of the base plate 22, and the shaft portion 21 is perpendicular to the first surface 221 of the base plate 22. At least one of the first surface 221 and the second surface 222 is provided with multiple guide grooves 23 (e.g., ...). Figure 8 As shown, a plurality of guide grooves 23 are arranged radially on the base plate 22, one end of the guide groove 23 extends to the edge of the base plate 22, and the other end of the guide groove 23 extends to or near the shaft center 21.

[0028] The shaft core 21 of the shaft core 2 is fitted into the shaft hole 12 of the bearing 1, and the base plate 22 of the shaft core 2 is disposed at the bottom end of the bearing body 11. In this embodiment, the bearing 1 and the shaft core 2 can be assembled first, and then the bearing 1 and the shaft core 2 can be placed on the base 3. In another embodiment, the shaft core 2 can be placed on the base 3 first, and then the bearing 1, the shaft core 2 and the base 3 can be assembled. There is no restriction on the assembly order of the bearing 1, the shaft core 2 and the base 3.

[0029] The base 3 has a body 31, and the top of the body 31 has an accommodating space 32. The accommodating space 32 is recessed into the top of the body 31 and can be a circular groove. The bearing 1 is fixed to the body 31 of the base 3. The bearing 1 can be fixed to the body 31 of the base 3 by means of screwing or interference fit. In this embodiment, the outer side of the bearing body 11 near the bottom end is provided with an external thread 14, and the body 31 of the base 3 is provided with an internal thread 33. The internal thread 33 is located at the outer edge of the accommodating space 32. The external thread 14 and the internal thread 33 are screwed together, so that the bearing 1 can be screwed and fixed to the body 31 of the base 3. The outer side of the bearing body 11 near the bottom end is fixed to the body 31, so that the bearing body 11 partially protrudes from the body 31 (e.g., Figure 4 As shown in the diagram, the top of the bearing body 11 is higher than the top of the base 31, thus allowing the stator of the fan assembly to be fixed using the outer side of the bearing body 11. In this embodiment, a ring portion 15 may be provided on the outer side of the bearing body 11. The ring portion 15 is arranged around the outer side of the bearing body 11, located above the external thread 14, and can abut against the top of the base 31, so that the bearing 1 can be more stably positioned on the base 3.

[0030] The bottom end of bearing 1 and the base plate 22 of shaft 2 are fitted in the accommodating space 32. The base plate 22 of shaft 2 can rotate in the accommodating space 32. Multiple guide grooves 23 can guide the flow of lubricating fluid to generate pressure and produce axial positioning (thrust) effect. The pressure of the oil film keeps shaft 2 stable during rotation, and the axial force can be adjusted by utilizing the design of guide grooves 23.

[0031] In this embodiment, the outer side of the base 3's seat 31 can also be further extended to form a substrate 34 (e.g., Figure 3 and Figure 4 As shown), this allows the base 3 to be set more stably. In another embodiment, the aforementioned base plate 34 may not be provided (as shown). Figure 5 and Figure 6 (As shown), to save space and increase installation flexibility.

[0032] Please see Figure 7 The fan assembly, in addition to the bearing system, includes a stator 10, a fan blade 20, and a rotor 30. The stator 10 can be directly assembled onto the bearing 1. The stator 10 is sleeved and fixed to the outside of the bearing body 11 to directly connect the stator 10 and the bearing 1. The stator 10 can also be sleeved and fixed to the outside of the base 3's seat 31. The fan blade 20 is assembled to the upper end of the shaft 2's core portion 21, and the rotor 30 is fixed to the inside of the fan blade 20, thus completing the assembly of the fan assembly.

[0033] Please see Figure 9This embodiment also provides a method for manufacturing a bearing system, which includes the following steps:

[0034] First, a bearing 1, a shaft 2, and a base 3 are provided (e.g., ...). Figures 3 to 8 (As shown). The bearing 1 has a bearing body 11, and a shaft hole 12 is formed inside the bearing body 11. The inner wall of the shaft hole 12 may be provided with at least one set of oil guiding grooves 13. The shaft 2 includes a shaft part 21 and a base plate 22, which are integrally formed. The two opposite sides of the base plate 22 are respectively formed with a first surface 221 and a second surface 222. The shaft part 21 stands upright on the first surface 221 of the base plate 22 and is perpendicular to the first surface 221 of the base plate 22. At least one of the first surface 221 and the second surface 222 is provided with a plurality of guiding grooves 23. The base 3 has a body 31, and the top of the body 31 has an accommodating space 32.

[0035] Subsequently, the shaft core 21 of the shaft core 2 is fitted into the shaft hole 12 of the bearing 1, and the base plate 22 of the shaft core 2 is placed at the bottom end of the bearing body 11. The bearing 1 is fixed to the seat 31 of the base 3 by means of screwing or interference fit, and the bottom end of the bearing body 11 and the base plate 22 of the shaft core 2 are fitted into the accommodating space 32, so that the base plate 22 of the shaft core 2 can rotate in the accommodating space 32.

[0036] Alternatively, a stator 10 can be further assembled onto the bearing 1, wherein the stator 10 is sleeved and fixed on the outside of the bearing body 11, and a fan blade 20 is assembled on the upper end of the shaft core 21 of the shaft core 2, and a rotor 30 is fixed on the inside of the fan blade 20, so that the bearing system can assemble the stator 10, the rotor 30 and the fan blade 20 together, thereby forming a fan device.

[0037] [Beneficial Effects of the Examples]

[0038] The beneficial effects of this utility model are as follows: This utility model provides a bearing system and a fan device, wherein the bearing system includes a bearing, a shaft, and a base. The shaft includes a shaft portion and a base plate, which are integrally formed. The two opposite sides of the base plate form a first surface and a second surface, respectively. The shaft portion stands upright on the first surface of the base plate, and at least one of the first and second surfaces is provided with multiple guide grooves. The shaft portion of the shaft fits into the shaft hole of the bearing, and the base plate of the shaft is disposed at the bottom end of the bearing body. The base has a body, and the top end of the body has an accommodating space. The bearing is fixed on the body of the base, and the bottom end of the bearing body and the base plate of the shaft fit into the accommodating space. The base plate of the shaft can rotate in the accommodating space. The multiple guide grooves can guide the flow of lubricating fluid to generate pressure and produce an axial positioning effect, and the pressure of the oil film keeps the shaft stable during rotation.

[0039] This invention eliminates the need for existing fan components such as wear-resistant plates, fixing plates, and fixing pressure rings, significantly simplifying the overall structure and facilitating assembly. By directly fixing the bearing to the base, the bearing is securely positioned, achieving both axial and radial positioning effects. This provides selectable vibration damping and stability, reduces fan blade wobble during rotation, allows for adjustable fan height, facilitates height changes, maintains stable operation, and offers greater flexibility in installation angles, enabling installation at any angle. It also boasts selectable versatility, making it suitable for applications such as automotive devices, laser scanners, and 3C products.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of patent protection of the present utility model. Therefore, all equivalent changes made based on the content of the present utility model specification and drawings should be included within the scope of protection of the present utility model.

Claims

1. A bearing system, characterized in that, include: A bearing having a bearing body and a shaft hole formed therein; A shaft, comprising a shaft portion and a base plate, the shaft portion and the base plate being integrally formed, the base plate having a first surface and a second surface formed on opposite sides, the shaft portion standing upright on the first surface of the base plate, at least one of the first surface and the second surface having a plurality of guide grooves, the shaft portion fitting into the shaft hole of a bearing, and the base plate of the shaft being disposed at the bottom end of the bearing body; and A base has a body, the top of the body has an accommodating space, the bearing is fixed to the body of the base, the bottom end of the bearing body and the base plate of the shaft are fitted into the accommodating space, and the base plate of the shaft can rotate in the accommodating space.

2. The bearing system as described in claim 1, characterized in that, The bearing body has an external thread near the bottom on its outer side, and the base has an internal thread. The internal thread is located on the outer edge of the accommodating space, and the external thread and the internal thread are screwed together.

3. The bearing system as described in claim 1, characterized in that, The bearing body has a ring portion on its outer side, the ring portion is arranged around the outer side of the bearing body, and the ring portion can abut against the top of the seat.

4. The bearing system as claimed in claim 1, characterized in that, The bearing body is fixed to the base near its bottom edge on its outer side, the bearing body extends partially out of the base, and the top of the bearing body is higher than the top of the base.

5. A fan device, characterized in that, include: A bearing having a bearing body and a shaft hole formed therein; A shaft, comprising a shaft portion and a base plate, the shaft portion and the base plate being integrally formed, the two opposite sides of the base plate forming a first surface and a second surface respectively, the shaft portion standing upright on the first surface of the base plate, at least one of the first surface and the second surface being provided with a plurality of guide grooves, the shaft portion of the shaft fitting into the shaft hole of the bearing, and the base plate of the shaft being disposed at the bottom end of the bearing body; A base has a body, the top of the body has an accommodating space, the bearing is fixed to the body of the base, the bottom end of the bearing body and the bottom plate of the shaft are fitted in the accommodating space, and the bottom plate of the shaft can rotate in the accommodating space. A stator is sleeved and fixed to the outside of the bearing body; A fan blade, said fan blade being assembled at the upper end of the central portion of said shaft; and A rotor, which is fixed to the inside of the fan blade.

6. The fan device as claimed in claim 5, characterized in that, The bearing body has an external thread near the bottom on its outer side, and the base has an internal thread. The internal thread is located on the outer edge of the accommodating space, and the external thread and the internal thread are screwed together.

7. The fan device as claimed in claim 5, characterized in that, The bearing body has a ring portion on its outer side, the ring portion is arranged around the outer side of the bearing body, and the ring portion can abut against the top of the seat.

8. The fan device as claimed in claim 5, characterized in that, The bearing body is fixed to the base near its bottom edge on its outer side, the bearing body extends partially out of the base, and the top of the bearing body is higher than the top of the base.

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