CN215419779U - Isolation rotor and direct-current brushless motor thereof - Google Patents
Isolation rotor and direct-current brushless motor thereof Download PDFInfo
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- CN215419779U CN215419779U CN202121724481.2U CN202121724481U CN215419779U CN 215419779 U CN215419779 U CN 215419779U CN 202121724481 U CN202121724481 U CN 202121724481U CN 215419779 U CN215419779 U CN 215419779U
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- punching sheet
- rotor punching
- outer rotor
- inner rotor
- sheet
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Abstract
The utility model relates to an isolated rotor comprising: an outer rotor punching sheet; the inner rotor punching sheet is positioned in the middle of the outer rotor punching sheet and forms a gap with the outer rotor punching sheet; the gap is isolated by injection molding; the punching sheet is divided into an outer rotor punching sheet and an inner rotor punching sheet, the outer rotor punching sheet and the inner rotor punching sheet are connected through injection molding, current generated by the outer rotor punching sheet cannot be transmitted to the inner rotor punching sheet, and then damage to the rotating shaft and the bearing cannot be caused.
Description
Technical Field
The utility model relates to a motor rotor, in particular to an isolation rotor.
Background
The rotor core is formed by overlapping and combining high-permeability material punching sheets; the structure of the punching sheet directly influences the efficiency, the service life and the performance of the generator, the assembly production efficiency of the motor and the like.
The conventional rotor punching sheet is integrally formed, so that the electrified rotor generates current and can be damaged by a rotating shaft and a bearing.
In summary, how to prevent the current generated by the rotor from being transmitted to the rotating shaft becomes a problem that needs to be solved by researchers of companies.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: how to prevent the current generated by the rotor from being transmitted to the rotating shaft and the bearing;
in order to solve the technical problems, the utility model adopts the following technical scheme:
the present invention is an isolated rotor comprising: an outer rotor punching sheet; the inner rotor punching sheet is positioned in the middle of the outer rotor punching sheet and forms a gap with the outer rotor punching sheet; the gap is isolated by injection molding;
compared with the traditional integrally formed punching sheet, the punching sheet is divided into the outer rotor punching sheet and the inner rotor punching sheet by adopting split arrangement, and the outer rotor punching sheet and the inner rotor punching sheet are connected through injection molding, so that even if the outer rotor punching sheet generates current, the current cannot be transmitted to the inner rotor punching sheet, and further, damage to a rotating shaft and a bearing cannot be caused; in addition, the outer rotor punching sheet and the inner rotor punching sheet can effectively reduce the vibration of the motor through injection isolation.
In order to accurately position the outer rotor punching sheet and the inner rotor punching sheet during injection isolation, the outer rotor punching sheet is provided with three first positioning holes, and the circle center of each first positioning hole is positioned at the vertex of an equilateral triangle; the inner rotor punching sheet is provided with three second positioning holes, and the circle center of each second positioning hole is positioned at the vertex of the equilateral triangle; and after the outer rotor punching sheet is positioned through the first positioning hole and the inner rotor punching sheet is positioned through the second positioning hole, injection molding isolation is carried out on the gap.
The present invention can be applied to such an isolated rotor in a brushless dc motor.
The utility model has the beneficial effects that: the utility model relates to an isolation rotor, which is characterized in that punching sheets are divided into an outer rotor punching sheet and an inner rotor punching sheet, the outer rotor punching sheet and the inner rotor punching sheet are connected through injection molding, current generated by the outer rotor punching sheet cannot be transmitted to the inner rotor punching sheet, and further, damage to a rotating shaft and a bearing cannot be caused.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of an outer rotor sheet of the present invention;
FIG. 2 is a schematic structural diagram of an inner rotor punching sheet according to the present invention;
FIG. 3 is a schematic structural view of the present invention;
in the figure: 1-outer rotor punching sheet, 2-inner rotor punching sheet, 3-gap, 4-first positioning hole and 5-second positioning hole.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1-3, the present invention is an isolated rotor comprising: an outer rotor punching sheet 1; the inner rotor punching sheet 2 is positioned in the middle of the inner part of the outer rotor punching sheet 1, and forms a gap 3 with the outer rotor punching sheet 2; the gap 3 is isolated by injection molding;
compared with the traditional integrally formed punching sheet, the punching sheet is divided into the outer rotor punching sheet and the inner rotor punching sheet by adopting split arrangement, and the outer rotor punching sheet and the inner rotor punching sheet are connected through injection molding, so that even if the outer rotor punching sheet generates current, the current cannot be transmitted to the inner rotor punching sheet, and further, damage to a rotating shaft and a bearing cannot be caused; in addition, the outer rotor punching sheet and the inner rotor punching sheet can effectively reduce the vibration of the motor through injection isolation.
As shown in fig. 1-3, in order to accurately position the outer rotor punching sheet and the inner rotor punching sheet during injection isolation, the outer rotor punching sheet 1 is provided with three first positioning holes 4, and the center of each first positioning hole 4 is located at the vertex of an equilateral triangle; three second positioning holes 5 are formed in the inner rotor punching sheet 2, and the circle center of each second positioning hole 5 is located at the vertex of the equilateral triangle; and when the outer rotor punching sheet 1 is positioned through the first positioning hole 4 and the inner rotor punching sheet 2 is positioned through the second positioning hole 5, injection molding isolation is carried out on the gap 3.
The present invention can be applied to such an isolated rotor in a brushless dc motor.
The utility model relates to an isolation rotor, which is characterized in that punching sheets are divided into an outer rotor punching sheet and an inner rotor punching sheet, the outer rotor punching sheet and the inner rotor punching sheet are connected through injection molding, current generated by the outer rotor punching sheet cannot be transmitted to the inner rotor punching sheet, and further, damage to a rotating shaft and a bearing cannot be caused.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. An isolated rotor, comprising:
an outer rotor punching sheet;
the inner rotor punching sheet is positioned in the middle of the inner part of the outer rotor punching sheet and forms a gap with the outer rotor punching sheet;
the gap is isolated by injection molding.
2. The isolation rotor as claimed in claim 1, wherein three first positioning holes are formed in the outer rotor sheet, and the center of each first positioning hole is located at the vertex of an equilateral triangle;
the inner rotor punching sheet is provided with three second positioning holes, and the circle center of each second positioning hole is positioned at the vertex of the equilateral triangle;
and when the outer rotor punching sheet is positioned through the first positioning hole and the inner rotor punching sheet is positioned through the second positioning hole, injection molding isolation is carried out on the gap.
3. A brushless dc motor comprising an isolated rotor according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121724481.2U CN215419779U (en) | 2021-07-27 | 2021-07-27 | Isolation rotor and direct-current brushless motor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121724481.2U CN215419779U (en) | 2021-07-27 | 2021-07-27 | Isolation rotor and direct-current brushless motor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215419779U true CN215419779U (en) | 2022-01-04 |
Family
ID=79653449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121724481.2U Active CN215419779U (en) | 2021-07-27 | 2021-07-27 | Isolation rotor and direct-current brushless motor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215419779U (en) |
-
2021
- 2021-07-27 CN CN202121724481.2U patent/CN215419779U/en active Active
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