Patent Application
20220103028
The subject matter herein generally relates to motor rotors, and more particularly to a motor rotor plate of the motor rotor.
Referring to
Implementations of the present disclosure will now be described, by way of embodiments, with reference to the attached figures.
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. Additionally, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures and components have not been described in detail so as not to obscure the related relevant feature being described. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features. The description is not to be considered as limiting the scope of the embodiments described herein.
Several definitions that apply throughout this disclosure will now be presented.
The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “substantially” is defined to be essentially conforming to the particular dimension, shape, or another word that “substantially” modifies, such that the component need not be exact. For example, “substantially cylindrical” means that the object resembles a cylinder, but can have one or more deviations from a true cylinder. The term “comprising” means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in a so-described combination, group, series, and the like.
Referring to
In one embodiment, the electrode portions 20 are symmetrically arranged along the radial direction of the connecting portion 10, and a size of each electrode portion 20 is the same, so that a number of coil windings on each electrode portion 20 is the same, and the magnetic field is uniformly distributed.
In one embodiment, the stopping portion 30 is symmetrically arranged on two sides of each electrode portion 20, and a gap 31 is defined between two opposing stopping portions 30 of every two adjacent electrode portions 20. The gap 31 facilitates the winding of the coil onto the electrode portion 20.
In one embodiment, the stopping portions 30 and an outer side of the electrode portions 20 form an arc concentric with the connecting portion 10 to maximize the area of the electrode portions 20 and thereby increase the magnetic flux.
In one embodiment, a plurality of the motor rotor plates 100 is arranged in a stack to increase a torque of the motor rotor plates 100. In order to fix the plurality of motor rotor plates 100 together, a riveting hole 40 is provided at an end portion of each electrode portion 20 away from the connecting portion 10. The riveting hole 40 is convenient for riveting the stacked motor rotor plates together 100. A center of the riveting hole 40 is located on a center line of the electrode portion 20 to guide stable distribution of the magnetic field and avoid sudden changes in the magnetic field.
In one embodiment, a second rounded corner 22 is provided at a connection joint between the electrode portion 20 and the connecting portion 10. The second rounded corner 22 is used to guide the magnetic field to distribute smoothly and avoid sudden changes in the magnetic field.
Referring to
Referring to
Specifically, in one embodiment, the motor rotor plate 100 is a silicon steel sheet. Compared with other materials, silicon steel has higher magnetic permeability and greater resistivity and can better reduce magnetic consumption. In other embodiments, the motor rotor plate 100 may be made of a conductive material such as iron.
Specifically, in one embodiment, a thickness of the motor rotor plate 100 is 0.35 mm, and two motor rotor plates 100 riveted together have a thickness of 0.7 mm. After coating a layer of 0.06 mm insulating film on opposite surfaces of the two riveted motor rotor plates 100, the total thickness is only 0.82 mm.
In other embodiments, the connecting portion 10 can be coupled to other numbers of electrode portions 20, such as twelve. The motor rotor plate 100 can have other sizes, and the included angle formed between the two side edges of each electrode portion 20 can be other degrees, such as 24 degrees.
In summary, each electrode portion 20 of the motor rotor plate 100 gradually increase in width along the radial direction of the connecting portion 10, thereby increasing the area of the electrode portion 20 and increasing the magnetic flux. Thus, the electric current of the coil 200a can be reduced, thereby reducing heat generation. The above-mentioned motor rotor 300 achieves the purpose of reducing the electric current of the coil 200a while maintaining the same rotation speed through the above-mentioned motor rotor plates 100, thereby reducing heat generation. The motor 400 achieves the purpose of reducing the electric current of the coil 200a while maintaining the same rotation speed through the motor rotor 300, thereby reducing heat generation. The fan 500 uses the motor 400 to achieve the purpose of reducing the electric current of the coil 200a while maintaining the same rotation speed, thereby reducing heat generation.
The embodiments shown and described above are only examples. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, including in matters of shape, size and arrangement of the parts within the principles of the present disclosure up to, and including, the full extent established by the broad general meaning of the terms used in the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202011025085.0 | Sep 2020 | CN | national |
