CN217388360U - Rotor assembly and motor using same - Google Patents
Rotor assembly and motor using same Download PDFInfo
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- CN217388360U CN217388360U CN202221040149.9U CN202221040149U CN217388360U CN 217388360 U CN217388360 U CN 217388360U CN 202221040149 U CN202221040149 U CN 202221040149U CN 217388360 U CN217388360 U CN 217388360U
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- rotating shaft
- dynamic unbalance
- rotor
- block
- rotor assembly
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Abstract
The utility model discloses a rotor subassembly and motor of using thereof, including a plurality of permanent magnets, rotor core, pivot and plastic-sealed body, its characterized in that: the dynamic unbalance block is characterized by further comprising a dynamic unbalance block, the middle of the rotating shaft is hollowed to form two second flat positions which are symmetrically arranged, a U-shaped groove is formed in the dynamic unbalance block, the dynamic unbalance block is clamped at the second flat position in the middle of the rotating shaft through the U-shaped groove, the two side faces of the U-shaped groove are provided with a plurality of permanent magnets, the rotor iron core is arranged in the middle of the rotating shaft, the permanent magnets, the rotor iron core, the rotating shaft and the dynamic unbalance block are sealed into a whole through a plastic package body, the structure is simple, the installation is convenient, the binding force and the torsion force between the rotating shaft and the rotor can be increased, the rotating shaft with dynamic unbalance can be solved, and the manufacturing cost is low.
Description
Technical Field
The utility model relates to a rotor subassembly and motor of using thereof.
Background
In the high-speed rotation process of the motor rotor under the existing ideal state, if the circumferential weight distribution of the rotor is uniform, the mass center of the rotor is at the center of the rotating shaft, the rotor rotates smoothly at the moment, and the dynamic unbalance amount of the rotor is zero at the moment. If the circumferential weight distribution of the rotor is not uniform, the center of mass of the rotor is not coincident with the center of the rotating shaft, the rotor can vibrate when rotating at a high speed, noise is caused, the service life of the motor is influenced, and the dynamic unbalance amount of the rotor is not zero at the moment. In reality, because of the difference of the components of the rotor, the rotating shaft is provided with factors such as a mounting flat position and the like, so that the whole rotor has certain dynamic unbalance. In order to reduce the dynamic unbalance of the rotor, weighting and de-weighting solutions exist, but these require full inspection in production and then processing, which increases the manufacturing cost.
The existing motor rotor is increasingly injected with a rotating shaft into the rotor by an injection molding process, the rotating shaft and the rotor are connected together through plastics, and in order to ensure the bonding strength of the rotor and the plastics, knurling or grooving or flat lathing is usually adopted to solve the problem.
Disclosure of Invention
An object of the utility model is to provide a can increase cohesion and torsion between pivot and the rotor, reduce manufacturing cost's rotor subassembly and motor of using thereof.
A further object of the present invention is to provide a rotor assembly and a motor using the same, which can effectively eliminate the problem of the rotor assembly caused by the rotor imbalance
The purpose of the utility model is realized by the following technical proposal.
The utility model aims at providing a rotor subassembly, including a plurality of permanent magnets, rotor core, pivot and plastic-sealed body, its characterized in that: the rotor core is characterized by further comprising a dynamic unbalance block, the middle of the rotating shaft is hollowed to form two second flat positions which are symmetrically arranged, a U-shaped groove is formed in the dynamic unbalance block, the dynamic unbalance block is clamped at the second flat position in the middle of the rotating shaft through the U-shaped groove, the two side faces of the U-shaped groove are provided with a plurality of permanent magnets, the rotor core is arranged in the middle of the rotating shaft, and the permanent magnets, the rotor core, the rotating shaft and the dynamic unbalance block are sealed into a whole through a plastic package body.
The rotating shaft adopts a rotating shaft without dynamic unbalance, and the mass center O1 of the dynamic unbalance block is superposed with the central line L of the rotating shaft.
The rotating shaft adopts a rotating shaft with dynamic unbalance, one end of the rotating shaft is provided with a first flat position to form the rotating shaft with dynamic unbalance, and the dynamic unbalance generated by the first flat position on the rotating shaft is eliminated by utilizing the fact that the centroid O1 of the dynamic unbalance block is not overlapped with the central line L of the rotating shaft.
The U-shaped groove of the dynamic unbalance block is provided with an opening, the bottom of the opening is provided with a bulge with a certain thickness, and the distance between the mass center O1 of the dynamic unbalance block and the central line L of the rotating shaft is adjusted by adjusting the width of the bulge so as to adapt to different dynamic unbalance amounts.
The first flat position and the second flat position are circumferentially staggered by a certain angle.
The first flat position and the second flat position are circumferentially staggered by 90 degrees.
The outer contour of the dynamic unbalance block is a square block.
The two side surfaces of the U-shaped groove comprise a plurality of magnetic conduction blocks, a radial groove is formed between every two adjacent magnetic conduction blocks, the permanent magnet is nested in the radial groove, and the permanent magnet and the magnetic conduction blocks enclose an annular magnetic assembly.
An electric machine comprising a machine housing, a stator assembly and a rotor assembly, characterized in that: the rotor assembly is as described above.
Compared with the prior art, the utility model, following effect has:
1) the utility model provides a rotor subassembly, includes a plurality of permanent magnets, rotor core, pivot and plastic envelope body, its characterized in that: the dynamic unbalance block is characterized by further comprising a dynamic unbalance block, the middle of the rotating shaft is hollowed to form two second flat positions which are symmetrically arranged, a U-shaped groove is formed in the dynamic unbalance block, the dynamic unbalance block is clamped at the second flat position in the middle of the rotating shaft through the U-shaped groove, the two side faces of the U-shaped groove are provided with a plurality of permanent magnets, the rotor core is arranged in the middle of the rotating shaft, the permanent magnets, the rotor core, the rotating shaft and the dynamic unbalance block are sealed into a whole through a plastic package body, the structure is simple, the installation is convenient, the binding force and the torsion force between the rotating shaft and the rotor can be increased, the problem that the rotor generates dynamic unbalance due to the rotating shaft with dynamic unbalance can be solved, and the manufacturing cost is low.
2) Other advantages of the present invention will be described in detail in the examples section.
Drawings
Fig. 1 is a perspective view provided by a first embodiment of the present invention;
fig. 2 is an exploded view of a first embodiment of the present invention;
fig. 3 is a perspective view of a rotating shaft and a dynamic unbalance block according to a first embodiment of the present invention;
fig. 4 is another perspective view of the rotating shaft and the dynamic unbalance block according to the first embodiment of the present invention;
fig. 5 is an exploded view of a rotating shaft and a dynamic unbalance block according to an embodiment of the present invention;
fig. 6 is a top view of a dynamic unbalance block according to an embodiment of the present invention;
fig. 7 is a front view of a rotating shaft and a dynamic unbalance block according to a first embodiment of the present invention;
FIG. 8 is a cross-sectional view A-A of FIG. 7;
fig. 9 is a plan view provided by the first embodiment of the present invention;
FIG. 10 is a cross-sectional view B-B of FIG. 9;
fig. 11 is an exploded view of the rotating shaft and the dynamic unbalance block according to the second embodiment of the present invention;
fig. 12 is a cross-sectional view of a rotating shaft and a dynamic unbalance block according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 to 10, the present embodiment provides a rotor assembly, which includes a plurality of permanent magnets 1, a rotor core 2, a rotating shaft 3, and a plastic package body 4, and is characterized in that: the rotor comprises a rotor core 2, a rotating shaft 3 and a movable unbalance block 5, wherein the rotor core 2 is provided with a rotor core 2, the middle part of the rotating shaft 3 is arranged in the rotor core 2, the middle part of the rotating shaft 3 is provided with a plurality of permanent magnets 1, the rotor core 2 is provided with a plurality of rotor core 2, the rotating shaft 3 is provided with a plurality of rotor core 2, the rotating shaft 3 and the movable unbalance block 5 are sealed into a whole by a plastic package body 4, the rotor is provided with a plurality of movable unbalance blocks 5, the movable unbalance block 5 is hollowed out in the middle of the rotating shaft 3 to form two second flat positions 32 which are symmetrically arranged, the U-shaped groove 51 is arranged on the movable unbalance block 5, and the permanent magnets 1, the rotor core 2, the rotating shaft 3 and the movable unbalance block 5 are integrated into a whole.
As shown in fig. 7, the rotating shaft 3 has a dynamic unbalance amount, the first flat portion 31 is disposed at one end of the rotating shaft 3 to form the rotating shaft with the dynamic unbalance amount, and the centroid O1 of the dynamic unbalance block 5 is not overlapped with the central line L of the rotating shaft 3, so as to eliminate the dynamic unbalance amount generated by the first flat portion 31 on the rotating shaft 3. The rotating shaft 3 is generally circular, the second flat position 32 and the first flat position 31 are formed after the rotating shaft 3 is cut into one piece, the first flat position 31 is connected with a load conveniently, the second flat position 32 is connected with the dynamic unbalance block 5 conveniently in an installing mode, and the bottoms of the second flat position 32 and the first flat position 31 are flat.
The U-shaped groove 51 of the dynamic unbalance block 5 is provided with the opening 52, the bottom of the opening 52 is provided with the protrusion 53 with a certain thickness, the distance between the centroid O1 of the dynamic unbalance block 5 and the central line L of the rotating shaft 3 is adjusted by adjusting the width of the protrusion 53 so as to adapt to different dynamic unbalance amounts, the structural arrangement is reasonable, and different customer requirements are met conveniently.
The first flat position 31 and the second flat position 32 are circumferentially staggered by a certain angle, the structural arrangement is reasonable, and the first flat position 31 and the second flat position 32 are circumferentially staggered by 90 degrees, so that the implementation is easier.
The dynamic unbalance block 5 has a square outer contour and a simple structure.
The U-shaped groove 51 has two flat side surfaces 51a, 51b for easy attachment to the second flat portion 32.
The rotor core 2 includes a plurality of magnetic conduction blocks 21, a radial groove 22 is formed between two adjacent magnetic conduction blocks 21, the permanent magnet 1 is embedded in the radial groove 22, and the plurality of permanent magnets 1 and the plurality of magnetic conduction blocks 21 enclose an annular magnetic assembly 100. The rotating shaft 3 with the dynamic unbalance block 5 is placed in the center of the annular magnetic assembly 100 for injection molding.
Example two:
as shown in fig. 11 and 12, the present embodiment is a further improvement based on the first embodiment, the rotating shaft 3 is a rotating shaft without dynamic unbalance, the centroid O1 of the dynamic unbalance block 5 coincides with the center line L of the rotating shaft 3, the coupling force and torsion between the rotating shaft and the rotor are increased, and the structure is simple.
Example three:
an electric machine comprising a machine housing, a stator assembly and a rotor assembly, characterized in that: the rotor assembly is the rotor assembly described in embodiment one or embodiment two.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (9)
1. The utility model provides a rotor subassembly, includes a plurality of permanent magnets (1), rotor core (2), pivot (3) and plastic envelope body (4), its characterized in that: the rotor core structure is characterized by further comprising a movable unbalance block (5), two second flat positions (32) which are symmetrically arranged are formed by hollowing out the middle part of the rotating shaft (3), a U-shaped groove (51) is formed in the movable unbalance block (5), the movable unbalance block (5) is clamped at the second flat positions (32) in the middle part of the rotating shaft (3) through the U-shaped groove (51), two side faces (51a and 51b) of the U-shaped groove (51) are tightly attached to the two second flat positions (32) respectively, the permanent magnets (1) are installed on the rotor core (2), the center of the rotor core (2) is arranged in the middle part of the rotating shaft (3), and the permanent magnets (1), the rotor core (2), the rotating shaft (3) and the movable unbalance block (5) are sealed into a whole through a plastic package body (4).
2. A rotor assembly as claimed in claim 1, wherein: the rotating shaft (3) adopts a rotating shaft without dynamic unbalance, and the mass center O1 of the dynamic unbalance block (5) is superposed with the central line L of the rotating shaft (3).
3. A rotor assembly as claimed in claim 1, wherein: the rotating shaft (3) adopts a rotating shaft with dynamic unbalance, a first flat position (31) is arranged at one end of the rotating shaft (3) to form the rotating shaft with dynamic unbalance, and the dynamic unbalance generated by the first flat position (31) on the rotating shaft (3) is eliminated by utilizing the fact that the center of mass O1 of the dynamic unbalance block (5) is not overlapped with the central line L of the rotating shaft (3).
4. A rotor assembly as claimed in claim 3, wherein: an opening (52) is formed in a U-shaped groove (51) of the dynamic unbalance block (5), a protrusion (53) with a certain thickness is arranged at the bottom of the opening (52), and the distance between the mass center O1 of the dynamic unbalance block (5) and the central line L of the rotating shaft (3) is adjusted by adjusting the width of the protrusion (53) so as to adapt to different dynamic unbalance amounts.
5. A rotor assembly as claimed in claim 4, wherein: the first flat position (31) and the second flat position (32) are circumferentially staggered by a certain angle.
6. A rotor assembly as claimed in claim 5, wherein: the first flat position (31) and the second flat position (32) are circumferentially staggered by 90 degrees.
7. A rotor assembly as claimed in claim 6, wherein: both side surfaces (51a, 51b) of the U-shaped groove (51) are flat surfaces, and the outer contour of the dynamic unbalance block (5) is a square.
8. A rotor assembly as claimed in any one of claims 1 to 7, wherein: the rotor core (2) comprises a plurality of magnetic conduction blocks (21), a radial groove (22) is formed between every two adjacent magnetic conduction blocks (21), the permanent magnet (1) is embedded in the radial groove (22), and the plurality of permanent magnets (1) and the plurality of magnetic conduction blocks (21) are enclosed to form an annular magnetic assembly (100).
9. An electric machine comprising a stator assembly and a rotor assembly, characterized in that: the rotor assembly of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221040149.9U CN217388360U (en) | 2022-05-05 | 2022-05-05 | Rotor assembly and motor using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221040149.9U CN217388360U (en) | 2022-05-05 | 2022-05-05 | Rotor assembly and motor using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217388360U true CN217388360U (en) | 2022-09-06 |
Family
ID=83108791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221040149.9U Active CN217388360U (en) | 2022-05-05 | 2022-05-05 | Rotor assembly and motor using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217388360U (en) |
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2022
- 2022-05-05 CN CN202221040149.9U patent/CN217388360U/en active Active
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