CN213879418U - Permanent magnet embedded type motor rotor structure - Google Patents
Permanent magnet embedded type motor rotor structure Download PDFInfo
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- CN213879418U CN213879418U CN202120073763.4U CN202120073763U CN213879418U CN 213879418 U CN213879418 U CN 213879418U CN 202120073763 U CN202120073763 U CN 202120073763U CN 213879418 U CN213879418 U CN 213879418U
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Abstract
The utility model discloses a permanent magnetism buryyed motor rotor structure, gather magnetic assembly, several including rotor and several gather magnetic assembly fixed mounting at the outer loop of rotor, several gather the center of the equal directional rotor of magnetic pole of magnetic assembly, and adjacent gather the magnetic pole at the directional rotor center of magnetic assembly opposite, gather magnetic assembly and constitute by gathering magnetic shell and magnet, gather the magnetic shell and be an open-ended casing, and gather magnetic shell fixed mounting at the outer loop of rotor, magnet fixed mounting is in gathering the magnetic shell. The utility model discloses make electric motor rotor have higher air gap magnetic density and torque density in less volume, can also produce reluctance torque, further improved motor torque density to can effectively reduce the motor volume, have the advantage that improves the motor performance.
Description
Technical Field
The utility model relates to the technical field of motors, specifically be a permanent magnetism imbeds formula electric motor rotor structure.
Background
An electric machine typically includes a stator fixed to a housing and a rotor movable relative to the stator. For example, the rotor may be supported such that it is rotatable relative to the stator or such that it is linearly movable relative to the stator, and the electrical machine is classified as an electromechanical energy converter and may be used as an electrical motor or a generator.
With the development of modern industrial technology, a large number of working occasions require the motor to operate at a low speed and provide a high torque. In order to realize the low-speed operation of the motor, a power supply with lower working frequency is adopted to supply power to the asynchronous motor or increase the pole pair number of the asynchronous motor, the low-frequency power supply needs expensive power electronic equipment such as an inverter and the like, the influence is not favorable for the stable operation of the motor, the leakage inductance is overlarge due to the increase of the pole pair number of the motor at one step, the power factor of the motor is reduced, although the permanent magnet motor does not need to adopt an electric excitation mode, the leakage flux is too much due to the excessive number of the pole pair numbers of the permanent magnet, and the motor output is lost; according to the motor design theory, the torque of the motor is approximately proportional to the motor volume, which means that the large-torque motor has larger volume, larger occupied space, more materials used by the motor and higher cost. Therefore, the traditional industry mostly adopts a mechanical transmission mechanism such as a gear box and the like to match the rotating speed and the torque of the motor and the load. But the inherent defects of the motor system such as vibration, noise, metal fatigue and the like greatly reduce the stability of the motor working system and improve the maintenance cost and the maintenance difficulty of the motor system. Therefore, it is necessary to improve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a formula electric motor rotor structure is buryyed to permanent magnetism, possesses the advantage that improves the motor performance, has solved the problem that proposes in the above background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a permanent magnetism embedded motor rotor structure, includes rotor and several and gathers magnetic assembly, several gather magnetic assembly fixed mounting in the outer loop of rotor, several gather the center of the directional rotor of magnetic assembly's magnetic pole all, and adjacent gather the magnetic pole at the directional rotor center of magnetic assembly opposite, it comprises magnetism gathering shell and magnet to gather magnetic assembly, it is one side open-ended casing to gather the magnetic shell, and gathers magnetic shell fixed mounting in the outer loop of rotor, magnet fixed mounting gathers in the magnetism shell.
Preferably, evenly encircle on the rotor and be provided with the several fixed column, the several gather the equal fixed mounting of magnetic component between the several fixed column, the fixed orifices has been seted up on the fixed column, be provided with the fixed pin in the fixed orifices, the fixed pin interference is installed and is made the fixed column and gather the magnetic component after in the fixed orifices and contradict and be connected.
Preferably, the magnet is one of a neodymium iron boron magnet, a samarium cobalt magnet and an alnico magnet.
Preferably, the magnetism gathering shell is made of metal which can be adsorbed by magnetic materials.
Preferably, the number of the magnetic gathering components is at least four, and the number of the magnetic gathering components is even.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses a set up and gather the magnetic component, gather the magnetic component and constitute by gathering magnetism shell and magnet, gather the magnetism shell and be an open-ended casing, and gather the outer loop of magnetism shell fixed mounting at the rotor, magnet fixed mounting is in gathering the magnetism shell, and one of them magnetic pole of magnet exposes outside gathering the magnetism shell, several the center of the equal directional rotor of magnetic pole of magnet component, and the magnetic pole at the directional rotor center of adjacent magnet component is opposite, makes it have higher air gap magnetism density and torque density in less volume, can also produce reluctance torque, has further improved motor torque density to can effectively reduce the motor volume, have the advantage that improves motor performance.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a rotor of the present invention;
fig. 3 is a schematic structural view of the middle magnetic assembly of the present invention.
The reference numerals and names in the figures are as follows:
1. a rotor; 2. a magnetism gathering component; 3. a magnetism gathering shell; 4. a magnet; 5. fixing a column; 6. a fixing hole; 7. and fixing the pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to fig. 3, the present invention provides an embodiment: the utility model provides a permanent magnetism embedded motor rotor structure, includes rotor 1 and several and gathers magnetic component 2, several gather magnetic component 2 fixed mounting at rotor 1's outer loop, several gather the center that magnetic component 2's magnetic pole all points to rotor 1, and adjacent gather the magnetic pole at the directional rotor 1 center of magnetic component 2 opposite, gather magnetic component 2 and constitute by gathering magnetic shell 3 and magnet 4, gather magnetic shell 3 and be one side open-ended casing, and gather magnetic shell 3 fixed mounting at rotor 1's outer loop, magnet 4 fixed mounting is in gathering magnetic shell 3.
More specifically, evenly encircle on the rotor 1 and be provided with several fixed column 5, the several gather the equal fixed mounting of magnetic component 2 between several fixed column 5, fixed orifices 6 have been seted up on fixed column 5, be provided with fixed pin 7 in the fixed orifices 6, fixed pin 7 interference is installed and is made fixed column 5 and gather magnetic component 2 after in fixed orifices 6 and contradict and be connected.
More specifically, the magnet 4 is one of a neodymium iron boron magnet, a samarium cobalt magnet, and an alnico magnet.
More specifically, the magnetism gathering shell 3 is made of metal that can be attracted by a magnetic material.
More specifically, the number of the magnetic gathering components 2 is at least four, and the number of the magnetic gathering components 2 is even.
The working principle is as follows: the utility model discloses firstly pack into magnet 4 and gather in magnetism shell 3, gather magnetism shell 3 and make by the metal that can be adsorbed by magnet 4, its shape is one end open-ended casing, 4 fixed mounting of magnet have the one end magnetic pole to expose outside after gathering magnetism shell 3, form the magnet subassembly, adjacent magnet subassembly exposes outside magnetic pole opposite, the center of the common directional magnet mechanism of magnetic pole of several magnet subassembly, at this in-process, the magnetic line of force produces the extrusion and upwards extends at the magnetic pole because of receiving the restraint that switches on of gathering magnetism shell 2, thereby make 4 magnetic force reinforcing of magnet.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. A permanent magnet embedded type motor rotor structure comprises a rotor (1) and a plurality of magnetism gathering assemblies (2), and is characterized in that: several gather magnetic component (2) fixed mounting and in the outer loop of rotor (1), the several gather the center that the magnetic pole of magnetic component (2) all pointed to rotor (1), and adjacent gather magnetic component (2) point to the magnetic pole at rotor (1) center opposite, gather magnetic component (2) and constitute by gathering magnetic shell (3) and magnet (4), gather magnetic shell (3) and be one side open-ended casing, and gather magnetic shell (3) fixed mounting in the outer loop of rotor (1), magnet (4) fixed mounting is in gathering magnetic shell (3).
2. The embedded permanent magnet motor rotor structure of claim 1, wherein: evenly encircle on rotor (1) and be provided with several fixed column (5), several gather the equal fixed mounting of magnetic component (2) between several fixed column (5), fixed orifices (6) have been seted up on fixed column (5), be provided with fixed pin (7) in fixed orifices (6), fixed pin (7) interference is installed and is made fixed column (5) and gather magnetic component (2) after in fixed orifices (6) and contradict and be connected.
3. The embedded permanent magnet motor rotor structure of claim 1, wherein: the magnet (4) is one of a neodymium iron boron magnet, a samarium cobalt magnet and an alnico magnet.
4. The embedded permanent magnet motor rotor structure of claim 1, wherein: the magnetism gathering shell (3) is made of metal which can be adsorbed by magnetic materials.
5. The rotor structure of permanent magnet embedded motor according to any one of claims 1 to 2, wherein: the number of the magnetism gathering assemblies (2) is at least four, and the number of the magnetism gathering assemblies (2) is even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120073763.4U CN213879418U (en) | 2021-01-12 | 2021-01-12 | Permanent magnet embedded type motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120073763.4U CN213879418U (en) | 2021-01-12 | 2021-01-12 | Permanent magnet embedded type motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213879418U true CN213879418U (en) | 2021-08-03 |
Family
ID=77045398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120073763.4U Active CN213879418U (en) | 2021-01-12 | 2021-01-12 | Permanent magnet embedded type motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213879418U (en) |
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2021
- 2021-01-12 CN CN202120073763.4U patent/CN213879418U/en active Active
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