CN215267899U - Motor structure with coincident axes - Google Patents
Motor structure with coincident axes Download PDFInfo
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- CN215267899U CN215267899U CN202120366308.3U CN202120366308U CN215267899U CN 215267899 U CN215267899 U CN 215267899U CN 202120366308 U CN202120366308 U CN 202120366308U CN 215267899 U CN215267899 U CN 215267899U
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- stator
- permanent magnet
- motor
- rotating shaft
- enameled wire
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Abstract
The utility model provides an axis coincidence motor structure, motor structure includes: shell structure, stator structure and rotor structure, the stator structure sets up shell structure's inside, the rotor structure sets up stator structure's inside, stator structure's axis with the axis coincidence of rotor structure, the rotor structure includes: pivot and permanent magnet, the permanent magnet with the pivot cooperation is connected, the permanent magnet with the position that the pivot cooperation is connected is cooperation portion, the length of cooperation portion with the length of permanent magnet is unanimous, through simplifying process flow, reduces the energy loss that the connection caused, the utility model discloses technical scheme can reduce the inside energy loss of motor, has promoted the mechanical properties when the motor operation.
Description
Technical Field
The utility model relates to a brushless motor field, concretely relates to axis coincidence motor structure.
Background
In the manufacturing process of the motor, the machining errors of the stator and the rotor exist certainly, wherein the machining errors of the rotor punching sheet, the rotating shaft, the size of the permanent magnet and the like come from the rotor. The above errors, and the matching tolerance between the permanent magnet and the rotor sheet, the rotor sheet and the rotating shaft can increase the cogging torque and the torque ripple of the motor, and the phenomenon is more obvious in fractional-slot concentrated windings. In addition, for the convenience of processing and manufacturing and the sine property of a magnetic field, a surface-mounted structure is mostly adopted in the sine modulated permanent magnet synchronous motor, and in order to prevent the magnetic steel from being separated, a layer of weftless tape or a layer of steel sleeve is often required to be bound on the periphery of the magnetic steel, so that the physical air gap of the motor is reduced, the manufacturing cost and the manufacturing difficulty are increased, meanwhile, the eddy current loss of the motor is increased due to the existence of the steel sleeve, and the working efficiency is reduced.
Therefore, how to improve the mechanical performance of the motor during operation is a problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing an axis coincidence motor structure, aim at improving the mechanical properties when promoting motor operation, for realizing above-mentioned purpose, the utility model provides an axis coincidence motor structure, motor structure includes: the stator structure is arranged inside the shell structure, the rotor structure is arranged inside the stator structure, and the axis of the stator structure is superposed with the axis of the rotor structure;
the rotor structure includes: the permanent magnet is connected with the rotating shaft in a matched mode, the position where the permanent magnet is connected with the rotating shaft in a matched mode is a matching portion, and the length of the matching portion is consistent with that of the permanent magnet.
Preferably, the diameter of the section of the fitting portion is larger than the diameter of the section of the rotating shaft.
Preferably, the outer wall of the permanent magnet is provided with a plurality of bosses at equal intervals, and the number of the bosses is the same as the number of poles of the motor.
Preferably, the rotating shaft is an integrally formed rotating shaft, and the permanent magnet is an integrally formed permanent magnet.
Preferably, the stator structure includes: stator ring, enameled wire and outer stator tooth, outer stator tooth with the enameled wire sets up the outside of stator ring, the enameled wire twine in on the outer stator tooth, it is a plurality of outer stator tooth sets up on the outer peripheral face of stator ring and follow the circumference of stator ring is equidistant to be set up.
Preferably, the stator ring is integrally formed with the outer stator teeth.
Preferably, the surface of the enameled wire is provided with heat-conducting silica gel.
Preferably, the housing structure comprises: the end cover is arranged on the end face of the shell, and the end cover is detachably connected with the shell.
Preferably, both sides of the rotating shaft are connected with the end covers in a matched mode through bearings.
Preferably, a plurality of vent holes are arranged on each end cover.
The utility model discloses technical scheme passes through rotor structure, rotor structure includes: pivot and permanent magnet, the permanent magnet with the pivot cooperation is connected, the permanent magnet with the position that the pivot cooperation is connected is cooperation portion, the length of cooperation portion with the length of permanent magnet is unanimous, the cooperation is connected for interference fit, avoids the loss of the relative energy that brings through the form of key-type connection, has reduced process flow, practices thrift the cost, has reduced the frictional force that the interconnect area between the part came, simultaneously, stator structure with rotor structure's axis coincidence can effectively reduce the vibration of motor, according to the law of conservation of energy, promptly motor structure is under the same power, and the energy of loss is few, promptly the utility model discloses an axis coincidence motor structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of an embodiment of a motor structure provided in the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a part diagram of the permanent magnet of the present invention;
fig. 4 is a part diagram of the stator structure of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Motor structure | 1 | Shell structure |
| 2 | Stator structure | 3 | |
| 11 | |
12 | |
| 21 | |
22 | Enameled |
| 23 | |
31 | |
| 32 | |
111 | |
| 221 | Heat-conducting |
311 | |
| 321 | Boss |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
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 efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and 3, in an embodiment of the present invention, the motor structure 100 includes: the structure comprises a shell structure 1, a stator structure 2 and a rotor structure 3, wherein the stator structure 2 is arranged inside the shell structure 1, the rotor structure 3 is arranged inside the stator structure 2, and the axis of the stator structure 2 is superposed with the axis of the rotor structure 3;
the rotor structure 3 comprises: pivot 31 and permanent magnet 32, permanent magnet 32 with pivot 31 cooperation is connected, permanent magnet 32 with the position that the pivot 31 cooperation is connected is cooperation portion 311, the length of cooperation portion 311 with the length of permanent magnet 32 is unanimous.
In the above technical solution, the axis of the stator structure 2 coincides with the axis of the rotor structure 3, so that the vibration of the motor can be reduced, and the stability of the working process of the motor is ensured, wherein the rotor structure 3 comprises: pivot 31 and permanent magnet 32 can reduce process flow, practices thrift the cost, permanent magnet 32 with cooperation portion 311 cooperation is connected, the cooperation is connected for interference fit, avoids the loss of the relative energy that brings through the form of key-type connection, has reduced process flow, has reduced the interconnect between the part, according to the law of conservation of energy, promptly the motor structure has realized improving the motor performance.
Referring to fig. 1 and 3, further, the diameter of the section of the fitting portion 311 is larger than that of the section of the rotating shaft 31. It should be noted that, the fitting part 311 with the permanent magnet 32 is interference fit, does benefit to the promotion the performance of motor, in this embodiment, the cross sectional shape is circular, circular does benefit to processing, practices thrift the cost, the cross sectional shape also can be equilateral polygon.
Referring to fig. 3, further, a plurality of bosses 321 are equally spaced on the outer wall of the permanent magnet 32, and the number of the bosses 321 is the same as the number of poles of the motor. It should be noted that the permanent magnets 32 are generally arranged at intervals, which is beneficial for the stator structure 2 to drive the permanent magnets 32 to move, and in this embodiment, the permanent magnets 32 are integrally formed, so that a plurality of bosses 321 are arranged on the outer wall of the permanent magnets 32 at equal intervals, and the number of the bosses 321 is the same as the number of poles of the motor, which is beneficial for the stator assembly 2 to drive the permanent magnets 32 to move.
Specifically, the permanent magnet 32 is an integrally formed permanent magnet, and the rotating shaft 31 is an integrally formed rotating shaft. It should be noted that, the permanent magnet 32 is an integrally formed permanent magnet, and compared with an embedded permanent magnet, the performance of the motor 100 is not reduced due to demagnetization of a single permanent magnet, so that the stability of the overall magnetic field can be ensured, and the production cost is also reduced.
With reference to fig. 4, further, the stator structure 2 comprises: stator ring 21, enameled wire 22 and outer stator tooth 23, outer stator tooth 23 with enameled wire 22 sets up the outside of stator ring 21, enameled wire 22 twine in on the outer stator tooth 23, it is a plurality of outer stator tooth 23 sets up on the outer peripheral face of stator ring 21 and along the equidistant setting of circumference of stator ring 21. It should be noted that the enameled wire 22 is wound around the outer stator teeth 23, a rotating magnetic field is generated after the enameled wire 22 is powered on, and the rotating magnetic field cuts the permanent magnet 32, so that the rotating shaft 31 is driven to rotate, and electric energy is converted into mechanical energy.
In particular, the stator ring 21 is integrally formed with the outer stator teeth 23. It should be noted that, in this embodiment, the stator ring 21 and the outer stator teeth 23 are formed by injection molding, which is beneficial to reduce cost, and in other embodiments, the stator ring 21 and the outer stator teeth 23 may enable silicon steel sheet stamped sheets to be formed integrally, which is beneficial to transmission of magnetic induction intensity.
Specifically, the surface of the enameled wire 22 is provided with a heat-conducting silica gel 221. It should be noted that the motor most easily generates heat, namely, the enameled wire 22, and after the heat-conducting silica gel is arranged on the surface of the enameled wire 22, the heat generated by the enameled wire 22 can be conducted to a certain extent, so that the heat dissipation of the motor is facilitated; and the heat-conducting silica gel 22 can also play a role in fixing the enameled wire 22, so that the stability of magnetic induction is ensured, and the work of the motor is facilitated.
With reference to fig. 1, further, the housing structure 1 comprises: the end cover 12 is arranged on the end face of the shell 11, and the end cover 12 is detachably connected with the shell 11. It should be noted that the detachable connection of the end cap 12 and the housing 11 includes: screw connection and hasp connection.
Specifically, two sides of the rotating shaft 31 are connected with the end cover 12 through a bearing 111 in a matching manner. It should be noted that, the rotation speed of the rotating shaft 31 is fast, and if the rotating shaft is directly connected to the end cover 12 in a matching manner, a large amount of heat is generated in the end cover 12, which is not beneficial to the operation of the motor, so that the rotating shaft 31 is connected to the end cover 12 in a matching manner through the bearing 111, and the bearing 111 employs: ball bearings or roller bearings are generally lubricated with grease.
Specifically, the end cap 12 and the housing 11 are both provided with a plurality of vent holes. It should be noted that, in this embodiment, the fan is disposed inside the motor, and if the motor is not provided with a vent hole, the fan cannot circulate with the outside air, and cannot complete air cooling of the motor, so that the end cover 12 and the housing 11 are both provided with a plurality of vent holes, which is convenient for the fan to circulate with the outside air during the rotation process, thereby achieving air cooling of the motor and ensuring smooth operation of the motor.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides an axis coincidence motor structure which characterized in that, motor structure includes: the stator structure is arranged inside the shell structure, the rotor structure is arranged inside the stator structure, and the axis of the stator structure is superposed with the axis of the rotor structure;
the rotor structure includes: the permanent magnet is connected with the rotating shaft in a matched mode, the position where the permanent magnet is connected with the rotating shaft in a matched mode is a matching portion, and the length of the matching portion is consistent with that of the permanent magnet.
2. The motor structure of claim 1, wherein a cross-section of said fitting portion has a diameter larger than a cross-section of said rotating shaft.
3. The motor structure of claim 1, wherein the outer wall of the permanent magnet is provided with a plurality of bosses at equal intervals, and the number of the bosses is the same as the number of poles of the motor.
4. The motor structure of claim 1, wherein the shaft is an integrally formed shaft and the permanent magnet is an integrally formed permanent magnet.
5. The electric machine structure of claim 1, wherein the stator structure comprises: stator ring, enameled wire and outer stator tooth, outer stator tooth with the enameled wire sets up the outside of stator ring, the enameled wire twine in on the outer stator tooth, it is a plurality of outer stator tooth sets up on the outer peripheral face of stator ring and follow the circumference of stator ring is equidistant to be set up.
6. The electric machine structure of claim 5, wherein the stator ring is integrally formed with the outer stator teeth.
7. The electric machine structure according to claim 5, wherein the surface of the enameled wire is provided with a thermally conductive silicone.
8. The electric machine structure of claim 1, wherein the housing structure comprises: the end cover is arranged on the end face of the shell, and the end cover is detachably connected with the shell.
9. The motor structure of claim 8, wherein the two sides of the rotating shaft are connected with the end covers in a matching way through bearings.
10. The electric machine structure of claim 8, wherein the end caps are each provided with a plurality of vent holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120366308.3U CN215267899U (en) | 2021-02-08 | 2021-02-08 | Motor structure with coincident axes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120366308.3U CN215267899U (en) | 2021-02-08 | 2021-02-08 | Motor structure with coincident axes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215267899U true CN215267899U (en) | 2021-12-21 |
Family
ID=79501665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120366308.3U Active CN215267899U (en) | 2021-02-08 | 2021-02-08 | Motor structure with coincident axes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215267899U (en) |
-
2021
- 2021-02-08 CN CN202120366308.3U patent/CN215267899U/en active Active
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