CN215890567U - Oil bearing capable of distinguishing direction for outer rotor fan - Google Patents
Oil bearing capable of distinguishing direction for outer rotor fan Download PDFInfo
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- CN215890567U CN215890567U CN202121870808.7U CN202121870808U CN215890567U CN 215890567 U CN215890567 U CN 215890567U CN 202121870808 U CN202121870808 U CN 202121870808U CN 215890567 U CN215890567 U CN 215890567U
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- pipe body
- cylindrical pipe
- oil
- cylinder body
- outer cylindrical
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Abstract
The utility model provides an oiliness bearing that is used for discernment direction of external rotor fan, includes an outer cylinder body and an interior cylinder body, and outer cylinder body coaxial cover is established on the outer circumference of interior cylinder body, and the external diameter of outer cylinder body lower extreme is less than its external diameter on its end, and the internal diameter of outer cylinder body lower extreme is greater than its internal diameter on its end. In automatic assembly line assembly, when the oiliness bearing is assembled, the direction arrangement of the oiliness bearing is consistent according to the difference of the outer diameters of the two ends of the oiliness bearing by the feeding vibration disc, the lower end of the oiliness bearing is installed downwards in the next procedure, the larger end of the oiliness bearing inner diameter is ensured to be installed at the bottom of the motor, and the stability of the motor in the outer rotor fan is improved.
Description
Technical Field
The utility model relates to the field of machinery, in particular to an oil-retaining bearing, and particularly relates to an oil-retaining bearing capable of distinguishing directions for an outer rotor fan.
Background
The outer rotor fan is a common fan and is automatically assembled through a production line. The oiliness bearing that some external rotor fans used is formed by powder metallurgy punching press, and two concentric circles cover and take a percentage through the punching press and make, and less deviation can appear in the internal diameter of two concentric circles, need install the slightly big one end of internal diameter in the fan bottom during normal assembly to reduce rocking of fan blade, but the pan feeding vibration dish of automatic assembly line can't judge the oiliness bearing direction, leads to the assembly efficiency lower.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects, designs the direction-recognizable oil-retaining bearing for the outer rotor fan, and aims to solve the technical problem that the direction of the oil-retaining bearing cannot be judged by an automatic assembly line due to the deviation of the inner diameters of two ends of the oil-retaining bearing of the outer rotor fan.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the oil-retaining bearing comprises an outer cylindrical pipe body and an inner cylindrical pipe body, wherein the outer cylindrical pipe body is coaxially sleeved on the outer circumference of the inner cylindrical pipe body, the outer diameter of the lower end of the outer cylindrical pipe body is smaller than that of the upper end of the outer cylindrical pipe body, and the inner diameter of the lower end of the outer cylindrical pipe body is larger than that of the upper end of the outer cylindrical pipe body.
Further, the wall thickness of the upper end of the outer cylindrical pipe body is larger than that of the lower end of the outer cylindrical pipe body.
Furthermore, a conical connecting section is arranged between the outer circumference of the lower end of the outer cylindrical pipe body and the outer circumference of the upper end of the outer cylindrical pipe body.
Further, the upper end wall and the lower end of the outer cylindrical pipe body are respectively provided with a chamfer.
The working process is as follows:
the oil-retaining bearing is customized in a mode that the outer diameter of the upper end is larger than the outer diameter of the lower end, and the inner diameter of the upper end is smaller than the inner diameter of the lower end, so that in the automatic assembly line assembly, when the oil-retaining bearing is assembled, the direction of the oil-retaining bearing can be identified through the asymmetrical structure of the two ends of the oil-retaining bearing during feeding, the lower end of the oil-retaining bearing is ensured to be installed downwards, and the larger end of the inner diameter of the oil-retaining bearing is ensured to be installed at the bottom of the motor. Because the oil-retaining bearing and the base are installed in an interference fit mode, the base can be crushed or damaged when the machine is installed, and the large head and the small head of the oil-retaining bearing can provide better guidance when the oil-retaining bearing is pressed into the base, so that the possibility that the base is crushed or damaged is reduced. When the fan blade is assembled, because the station for assembling the oil-retaining bearing ensures that the end with the larger inner diameter of the oil-retaining bearing is installed downwards, when the fan blade is assembled, the part with the larger shaking gap between the rotating shaft and the oil-retaining bearing is positioned at the bottom position, the shaking distance of the fan blade is reduced, the swinging amplitude of the fan blade is in the minimum state, the shaking of the fan blade is reduced, the guaranteed motor is stable in performance, and the service life of the motor is prolonged to a certain extent.
Compared with the prior art, the utility model has the advantages that the structure of the oil bearing is improved, so that the oil bearing can be assembled in the same direction and position during assembly, and the stability of the motor of the outer rotor fan is improved.
Drawings
Fig. 1 is a schematic view of an oil-containing bearing capable of distinguishing directions for an external rotor fan, which is provided by the utility model.
Fig. 2 is an explosion schematic diagram of the fan with the oil bearing capable of distinguishing the direction for the outer rotor fan provided by the utility model.
Fig. 3 is an exploded cross-sectional view of a fan with an oil bearing capable of distinguishing directions for an outer rotor fan, which is provided by the utility model.
Fig. 4 is a schematic diagram of a fan assembly of an oil bearing capable of distinguishing directions for an outer rotor fan provided by the utility model.
Detailed Description
Examples
As shown in fig. 1, the oil-retaining bearing capable of identifying directions for an external rotor fan of the present invention comprises an external cylindrical pipe body and an internal cylindrical pipe body, wherein the external cylindrical pipe body is coaxially sleeved on the outer circumference of the internal cylindrical pipe body, the outer diameter of the lower end of the external cylindrical pipe body is smaller than the outer diameter of the upper end thereof, and the inner diameter of the lower end of the external cylindrical pipe body is larger than the inner diameter of the upper end thereof.
Further, the wall thickness of the upper end of the outer cylindrical pipe body is larger than that of the lower end of the outer cylindrical pipe body.
Furthermore, a conical connecting section is arranged between the outer circumference of the lower end of the outer cylindrical pipe body and the outer circumference of the upper end of the outer cylindrical pipe body.
Furthermore, the upper end and the lower end of the outer cylindrical pipe body are respectively provided with a chamfer.
The working principle is as follows:
as shown in fig. 2, 3 and 4, the fan using the oil-retaining bearing comprises an outer shell 1, a fan blade cavity 11 is formed in the middle of the outer shell 1 in a hollow manner, a raised bearing seat 12 is arranged at the bottom of the shell facing the fan blade cavity 11, a hollow bearing cavity 13 is arranged on the bearing seat 12, an oil-retaining bearing 2 is arranged in the bearing cavity 13, a stator assembly 4 is coaxially arranged outside the bearing seat 12 and the oil-retaining bearing 2, a fan blade shell 5 is arranged outside the stator assembly 4, a rotating shaft 51 is arranged in the fan blade shell 5, the rotating shaft 51 extends downwards into the oil-retaining bearing 2, and at least three fan blades 52 are symmetrically arranged on the outer wall of the fan blade shell 5.
In automatic assembly line assembly, when assembling oil-retaining bearing 2, pan feeding vibration dish is according to the difference of the both ends external diameter of oil-retaining bearing 2, with the direction arrangement unanimity of oil-retaining bearing 2, installs oil-retaining bearing 2's lower extreme down in next process, ensures that the great one end of oil-retaining bearing 2 internal diameter is installed in the motor bottom. Because the oil-retaining bearing 2 and the base are installed in an interference fit mode, the base can be crushed or damaged when the machine is installed, and due to the design of the large end and the small end of the oil-retaining bearing 2, better guidance can be provided when the oil-retaining bearing 2 is pressed into the base, and the possibility that the base is crushed or damaged is reduced. When the fan blade 52 is assembled, because the station for assembling the oil-containing bearing 2 ensures that the end with the larger inner diameter of the oil-containing bearing 2 is installed downwards, when the fan blade shell 5 is assembled, the part with the larger shaking gap between the rotating shaft 51 and the oil-containing bearing 2 is positioned at the bottom position, the shaking distance of the fan blade 52 is reduced, the swinging amplitude of the fan blade 52 is in the minimum state, the shaking of the fan blade 52 is reduced, the performance stability of the ensured motor is ensured, and the service life of the motor is prolonged to a certain extent.
Claims (4)
1. The utility model provides an oiliness bearing that is used for discernment direction of external rotor fan, includes an outer cylinder body and an interior cylinder body, outer cylinder body coaxial cover establish on the outer circumference of interior cylinder body its characterized in that: the outer diameter of the lower end of the outer cylindrical pipe body is smaller than that of the upper end of the outer cylindrical pipe body, and the inner diameter of the lower end of the outer cylindrical pipe body is larger than that of the upper end of the outer cylindrical pipe body.
2. The oil bearing capable of distinguishing the directions for the external rotor fan as claimed in claim 1, wherein: the wall thickness of the upper end of the outer cylindrical pipe body is larger than that of the lower end of the outer cylindrical pipe body.
3. The oil bearing capable of distinguishing the directions for the external rotor fan as claimed in claim 1, wherein: a conical connecting section is arranged between the outer circumference of the lower end of the outer cylindrical pipe body and the outer circumference of the upper end of the outer cylindrical pipe body.
4. The oil bearing capable of distinguishing the directions for the external rotor fan as claimed in claim 1, wherein: the upper end and the lower end of the outer cylindrical pipe body are respectively provided with a chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121870808.7U CN215890567U (en) | 2021-08-11 | 2021-08-11 | Oil bearing capable of distinguishing direction for outer rotor fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121870808.7U CN215890567U (en) | 2021-08-11 | 2021-08-11 | Oil bearing capable of distinguishing direction for outer rotor fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215890567U true CN215890567U (en) | 2022-02-22 |
Family
ID=80563225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121870808.7U Active CN215890567U (en) | 2021-08-11 | 2021-08-11 | Oil bearing capable of distinguishing direction for outer rotor fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215890567U (en) |
-
2021
- 2021-08-11 CN CN202121870808.7U patent/CN215890567U/en active Active
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