CN210577989U - Motor based on brushless motor rotor is made - Google Patents
Motor based on brushless motor rotor is made Download PDFInfo
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- CN210577989U CN210577989U CN201921407246.5U CN201921407246U CN210577989U CN 210577989 U CN210577989 U CN 210577989U CN 201921407246 U CN201921407246 U CN 201921407246U CN 210577989 U CN210577989 U CN 210577989U
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Abstract
The utility model discloses a motor based on brushless motor rotor is made, including rotor dabber, rotor punching, rotor spacer, fan blade, magnet steel and balancing ring; the rotor punching sheet is fixedly connected with the rotor mandrel, the fan blades are connected with one end, close to the output shaft, of the rotor punching sheet, the magnetic steels are placed in magnetic steel grooves of the rotor punching sheet according to the polarity sequence, the part, exceeding the height of the rotor punching sheet, of the magnetic steels is provided with a rotor spacer bush, and the balance ring is arranged at one end of an open ring of the rotor punching sheet; the utility model provides a simple structure is reasonable, can improve its product positioning accuracy and save the cost in function work to can improve magnet steel convenience and work efficiency's a motor based on brushless motor rotor makes.
Description
Technical Field
The utility model relates to an electric tool field, more specifically the theory that says so, it relates to a motor based on brushless motor rotor makes.
Background
In recent years, the brushless motor industry shows a rapid development situation, the application field also relates to electric tools, garden tools, automobiles, household appliances, aerospace and the like, but in the actual production and processing process, if the polarity distribution sequence of the rotor magnetic steel is wrong; or the operator fails to check in the polarity detection process; or the polarity detection equipment fails, so that when the complete machine detects that the motor does not operate or operates abnormally, the machine turns around to analyze the problem and cause partial or batch reworking, and unnecessary waste of a large amount of material resources, financial resources and manpower is caused. The embedded structure on the market at present has simple process, but the utilization rate of the magnetic steel is lower; the surface-mounted structure magnetic steel has high utilization rate, but the process is relatively complex.
As shown in fig. 4, the positions of conventional brushless motor rotor punching structure magnetic steels on the market are 4 equal rectangular grooves, the polarity position of the initial piece of magnetic steel is not fixed, that is, any one groove of the rotor punching can be placed in the first piece of magnetic steel no matter in the N pole or the S pole, the position sequence of the following pieces of magnetic steel is determined by the position of the first piece of magnetic steel, and the magnetic steel groove of the novel brushless motor rotor punching structure magnetic steel adopts the opposite side irregular shape, that is, the shapes of the magnetic steel groove types of the two opposite side N pole and the S pole are different, and when the magnetic steel is placed, the positions of the N pole and the S pole are fixed.
The brushless motor rotor punching sheet is high in performance utilization rate of the magnetic steel with the pure surface-mounted structure, the overall performance of the motor is improved, but the manufacturing process is relatively complex and complicated; the manufacturing process of the simple embedded structure of the rotor punching sheet of the brushless motor is relatively single and simple, but the utilization rate of the magnetic steel performance is low, and the overall performance of the motor is reduced.
In addition, the design concept and the processing technology of each factory in the brushless motor industry are different, especially the positioning modes of various parts of the rotor are greatly different, the phenomena of under-positioning and over-positioning exist, and the situations of inaccurate processing size and resource waste are often caused in the actual production and manufacturing process. The matching of the shaft and the hole has certain defects, the shaft can twist and shift due to over-loosening, the processing is difficult or the rejection rate is increased due to over-tightening, and even the performance and rejection of the motor are affected.
Disclosure of Invention
The utility model overcomes prior art's is not enough, provides simple structure reasonable, can improve its product positioning accuracy and save the cost in function work to can improve magnet steel convenience and work efficiency's a novel brushless motor.
The technical scheme of the utility model as follows:
a motor based on a brushless motor rotor comprises a rotor mandrel, a rotor punching sheet, a rotor spacer bush, fan blades, magnetic steel and a balance ring; the rotor punching sheet is fixedly connected with the rotor mandrel, the fan blades are connected with one end, close to the output shaft, of the rotor punching sheet, the magnetic steels are placed in magnetic steel grooves of the rotor punching sheet according to the polarity sequence, the portion, exceeding the height of the rotor punching sheet, of the magnetic steels is provided with a rotor spacer bush, and the balance ring is arranged at one end of an open ring of the rotor punching sheet.
Furthermore, the sizes and the positions of the fan blades and the rotor punching sheet are matched with the positioning gear on the rotor mandrel.
Furthermore, the size of the punching sheet gear of the rotor mandrel adopts a grinding process of knurling firstly and then finish machining.
Further, only one balancing ring is adopted.
Furthermore, the rotor spacer bush and the rotor punching sheet completely cover the magnetic steel.
Furthermore, the balance ring is integrally in a step-shaped circular ring column, a cylindrical through hole is formed in the middle of the balance ring, and the size of the through hole is matched with that of the rotor mandrel.
Furthermore, the N pole of the magnetic steel groove of the rotor punching sheet adopts a regular structure, and the S pole of the magnetic steel groove of the rotor punching sheet adopts an irregular structure; or vice versa.
Furthermore, the shape of the magnetic steel is matched with that of a magnetic steel groove of the rotor punching sheet; the size of the magnetic steel is larger than that of the rotor punching sheet.
Furthermore, the regular structure adopts an arc shape, the irregular structure adopts two straight edges, and the included angle of the two straight edges is 135-160 degrees.
Further, the balancing ring seals one end of the open ring of the rotor punching sheet.
Compared with the prior art, the utility model the advantage lies in: the rotor punching structure of the scheme is compatible with the advantages of embedded and surface-mounted structures on the market, so that the manufacturing process is simple, the utilization rate of magnetic steel performance is high, and the overall performance of the motor is improved. The rotor punching sheet design can improve the convenience and the working efficiency in work, fully play the performance of magnetic steel and play a foolproof role in the production and manufacturing process.
A series of problems caused by inconsistent stack heights of rotor punching sheets are solved through the rotor spacer bush. The balance ring is arranged at one end of the open ring of the rotor punching sheet, only one balance ring is adopted, the whole balance ring is a step-shaped circular ring column, a cylindrical through hole is arranged in the middle of the balance ring, the size of the through hole is matched with that of the rotor core shaft, and the effect of sealing and fastening one end of the open ring of the rotor punching sheet is achieved. The special arrangement position of a fan blade replaces the traditional fan blade and balance ring, so that the fan blade not only plays a role in cooling and heat dissipation, but also plays a role in punching press mounting size positioning and balance ring, and the overall manufacturing cost is greatly reduced.
Drawings
Fig. 1 is a structural view of a rotor spindle according to the present invention;
FIG. 2 is a cross-sectional view of the present invention;
fig. 3 is a cross-sectional view of a rotor sheet according to the present invention;
fig. 4 is a sectional view of a conventional rotor punching sheet.
The figure is marked with: rotor mandrel 1, location shelves 11, rotor punching 2, rotor spacer 3, fan blade 4, magnet steel 5, balancing ring 6, magnet steel groove 7.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1 to 3, a motor manufactured based on a brushless motor rotor includes a rotor core shaft 1, a rotor punching sheet 2, a rotor spacer 3, a fan blade 4, magnetic steel 5, and a balance ring 6. The rotor punching sheet 2 is fixedly connected with the rotor mandrel 1, the fan blade 4 is connected with one end, close to the output shaft, of the rotor punching sheet 2, and the size and the positioning of the fan blade 4 and the rotor punching sheet 2 are matched with the positioning rail 11 on the rotor mandrel 1. The magnetic steels 5 are placed in the magnetic steel grooves 7 of the rotor punching sheets 2 according to the polarity sequence, and the shapes of the magnetic steels 5 are matched with the shapes of the magnetic steel grooves 7 of the rotor punching sheets 2; the size of the magnetic steel 5 is generally slightly larger than that of the rotor punching sheet 2. The rotor spacer 3 is arranged at the part of the magnetic steel 5, which exceeds the height of the rotor punching sheet 2. The rotor spacer 3 and the rotor punching sheet 2 completely cover the magnetic steel 5, so that a series of problems caused by inconsistent stacking heights of the rotor punching sheets 2 are solved through the rotor spacer 3. The balance ring 6 is arranged at one end of the open ring of the rotor punching sheet 2, only one balance ring 6 is adopted, the whole balance ring is a step-shaped circular ring column, a cylindrical through hole is arranged in the middle of the balance ring, the size of the through hole is matched with that of the rotor mandrel 1, and the effect of sealing and fastening one end of the open ring of the rotor punching sheet 2 is achieved. The special arrangement position of a fan blade 4 replaces the traditional fan blade 4 and the balance ring 6, so that the fan blade 4 not only plays a role in cooling and heat dissipation, but also plays a role in punching press mounting size positioning and the function of the balance ring 6, and the overall manufacturing cost is greatly reduced.
The punching piece gear position of the rotor mandrel 1 adopts a grinding process of knurling firstly and then finish machining, and the requirements of push-out force and torsion between relevant parts of the rotor mandrel 1 and the rotor punching piece 2 are greatly guaranteed.
The magnetic steel 5 is designed by combining an embedded type magnetic steel and a surface-mounted type magnetic steel. Specifically, the N pole of the magnetic steel groove 7 of the rotor punching sheet 2 adopts a regular structure, and the S pole of the magnetic steel groove 7 of the rotor punching sheet 2 adopts an irregular structure; or on the contrary, the S pole of the magnetic steel slot 7 of the rotor sheet 2 adopts a regular structure, and the N pole of the magnetic steel slot 7 of the rotor sheet 2 adopts an irregular structure. In the production and manufacturing process, the mounting positions of the N pole and the S pole are unique, so that the fool-proof operation effect is achieved. The shape of the magnetic steel 5 is matched with that of the magnetic steel groove 7 of the rotor punching sheet 2; the regular structure adopts an arc shape, the irregular structure adopts two straight edges, and the included angle of the two straight edges is 135-160 degrees. The design of the N-pole magnetic steel and the S-pole magnetic steel enables the N-pole magnetic steel and the S-pole magnetic steel to be extremely close to the outer diameter surface of the rotor punching sheet 2, so that the utilization rate of the performance of the magnetic steel 5 is improved, and the performance of a motor is improved.
In conclusion, the fan blades 4, the rotor core shaft 1 and the rotor punching sheets 2 are integrally pressed and positioned by the reasonably designed tool clamp, so that the production efficiency can be greatly improved, errors of stack tolerance caused by repeated positioning are reduced, meanwhile, the fan blades 4 replace the traditional fan blades 4 and the balance ring 6, the cost is greatly reduced, and the rotor spacer 3 is added, so that a series of problems caused by inconsistent stack height of the rotor punching sheets 2 are eliminated. The specially-made rotor punching sheet 2 is designed to improve the convenience and the working efficiency in work, fully exert the performance of the magnetic steel 5 and play a role in fool-proofing in the production and manufacturing process.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the concept of the present invention, and these improvements and decorations should also be considered as the protection scope of the present invention.
Claims (10)
1. A motor manufactured based on a brushless motor rotor is characterized by comprising a rotor mandrel, a rotor punching sheet, a rotor spacer bush, fan blades, magnetic steel and a balance ring; the rotor punching sheet is fixedly connected with the rotor mandrel, the fan blades are connected with one end, close to the output shaft, of the rotor punching sheet, the magnetic steels are placed in magnetic steel grooves of the rotor punching sheet according to the polarity sequence, the portion, exceeding the height of the rotor punching sheet, of the magnetic steels is provided with a rotor spacer bush, and the balance ring is arranged at one end of an open ring of the rotor punching sheet.
2. A motor made based on a brushless motor rotor according to claim 1, characterized in that: the sizes and the positions of the fan blades and the rotor punching sheet are matched with the positioning gear on the rotor mandrel.
3. A motor made based on a brushless motor rotor according to claim 1, characterized in that: the size of the punching sheet gear of the rotor mandrel adopts a grinding process of knurling firstly and then finish machining.
4. A motor made based on a brushless motor rotor according to claim 1, characterized in that: only one balancing ring is used.
5. A motor made based on a brushless motor rotor according to claim 1, characterized in that: the rotor spacer bush and the rotor punching sheet completely cover the magnetic steel.
6. A motor made based on a brushless motor rotor according to claim 1, characterized in that: the balance ring is integrally in a step-shaped circular ring column, a cylindrical through hole is formed in the middle of the balance ring, and the size of the through hole is matched with that of the rotor mandrel.
7. A motor made based on a brushless motor rotor according to claim 1, characterized in that: the N pole of the magnetic steel groove of the rotor punching sheet adopts a regular structure, and the S pole of the magnetic steel groove of the rotor punching sheet adopts an irregular structure; or vice versa.
8. A motor made based on a brushless motor rotor according to claim 1, characterized in that: the shape of the magnetic steel is matched with that of a magnetic steel groove of the rotor punching sheet; the size of the magnetic steel is larger than that of the rotor punching sheet.
9. An electric machine made on the basis of a brushless electric machine rotor according to claim 7, characterized in that: the regular structure adopts an arc shape, the irregular structure adopts two straight edges, and the included angle of the two straight edges is 135-160 degrees.
10. A motor made based on a brushless motor rotor according to claim 1, characterized in that: the balancing ring seals one end of the open ring of the rotor punching sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921407246.5U CN210577989U (en) | 2019-08-28 | 2019-08-28 | Motor based on brushless motor rotor is made |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921407246.5U CN210577989U (en) | 2019-08-28 | 2019-08-28 | Motor based on brushless motor rotor is made |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210577989U true CN210577989U (en) | 2020-05-19 |
Family
ID=70645706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921407246.5U Active CN210577989U (en) | 2019-08-28 | 2019-08-28 | Motor based on brushless motor rotor is made |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210577989U (en) |
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2019
- 2019-08-28 CN CN201921407246.5U patent/CN210577989U/en active Active
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