CN219086897U - Flat permanent magnet synchronous motor - Google Patents
Flat permanent magnet synchronous motor Download PDFInfo
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- CN219086897U CN219086897U CN202222571706.6U CN202222571706U CN219086897U CN 219086897 U CN219086897 U CN 219086897U CN 202222571706 U CN202222571706 U CN 202222571706U CN 219086897 U CN219086897 U CN 219086897U
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- synchronous motor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model discloses a flat permanent magnet synchronous motor, which aims to solve the problems that the motor of a power unit of a seeker position marker has the characteristics of small volume, light weight, flattening, convenient installation, high control precision, high response speed, high reliability and the like, and the existing flat motor cannot simultaneously meet the requirements; the rotor is arranged in the stator after being assembled and rotates by taking the central shaft as the axis after being started, a nut for rotor rotation positioning is sleeved on the free end of the central shaft, and two shaft end fixing sheets are symmetrically arranged on one side of the rotor, which is away from the shell, so as to be matched with the shaft ends of driving equipment required by screw fixation. The utility model is especially suitable for the guide head position marker, and has higher social use value and application prospect.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a flat permanent magnet synchronous motor.
Background
A seeker head positioner is commonly used in missiles, smart ammunition, where a highly reliable flat motor is required in a small space environment.
As the motor of the power unit of the guiding head marker, the motor is required to have the characteristics of small volume, light weight, flattening, convenient installation, high control precision, high response speed, high reliability and the like, and the conventional flat motor cannot simultaneously meet the requirements of small volume, low cost manufacture, long-term stable operation of a rotor and the like. To this end, we propose a flat permanent magnet synchronous motor.
Disclosure of Invention
The present utility model aims to solve or at least alleviate the problems of the prior art.
The utility model provides a flat permanent magnet synchronous motor, which comprises a flat shell, wherein the inner cavity of the shell is disc-shaped, a center shaft is integrally formed at the center position of the inner wall of the shell, and a stator and a rotor which are arranged from outside to inside with the center shaft as the axis are arranged in the inner cavity of the shell;
the rotor is arranged in the stator after being assembled and rotates by taking the central shaft as the axis after being started, a nut for rotor rotation positioning is sleeved on the free end of the central shaft, and two shaft end fixing sheets are symmetrically arranged on one side of the rotor, which is away from the shell, so as to be matched with the shaft ends of driving equipment required by screw fixation.
Optionally, the root of the center shaft is sleeved with at least one second adjusting gasket for adjusting the relative position between the stator and the rotor mounting end face.
Optionally, the stator includes:
an armature fixed in the inner cavity of the shell through high-temperature structural adhesive;
one end of the three-phase outgoing line is connected with the armature, and the other end of the three-phase outgoing line is led out to the outer cavity of the shell;
and the outlet plug is encapsulated between the three-phase outgoing line and the shell.
Optionally, the armature includes stator core and winding coil on stator core, and stator core and winding coil's outside is equipped with the stator potting layer that is used for encapsulating the armature into an integrated structure.
Optionally, the rotor comprises a bearing gland and a rotor magnetic yoke, wherein the bearing gland and the rotor magnetic yoke are sleeved on the central shaft and are sequentially arranged from inside to outside, the bearing gland is fixed with the rotor magnetic yoke through a plurality of screws, and a plurality of magnetic cores distributed in an annular array are fixed on the annular outer wall of the rotor magnetic yoke;
the middle part of the rotor magnetic yoke is provided with a concentric columnar through hole with a convex section, a large inner diameter section of the concentric columnar through hole is provided with a plurality of angular contact bearings coaxially sleeved on the central shaft, and the nut is positioned on a small inner diameter section of the concentric columnar through hole and is abutted against the outer end face of the outermost angular contact bearing.
Optionally, at least one first adjusting gasket for controlling the height difference between the end face of the rotor magnetic yoke and the end face of the angular contact bearing is further arranged between the bearing gland and the rotor magnetic yoke.
Optionally, a rotor encapsulating layer for encapsulating the rotor yoke and the plurality of magnetic cores into an integrated structure is arranged on the outer wall of the rotor yoke.
Optionally, an annular pillow block for matching and sleeving the shaft end of the required driving device is integrally formed in the middle of one end of the rotor magnetic yoke, which is far away from the casing.
The utility model has the following advantages:
1. the utility model arranges the stator and the rotor in the flat casing, the rotor is arranged in the stator in a built-in design mode and is matched with the center shaft, the space occupied by the bearing in the axial direction in the traditional motor structural design is effectively avoided, the motor structure is more compact by the design scheme of the built-in bearing, the space volume is reduced, the flat motor is more prone to flattening, the rotor can stably run for a long time, and the motor is suitable for driving the guide head position marker.
2. The flat internal arrangement of the utility model improves the air gap magnetic flux in unit volume, the air gap magnetic field of the motor approaches to sinusoidal, the harmonic content of motor operation is low, the counter-potential of the winding presents sinusoidal, the motor loss can be effectively reduced, and the motor efficiency, torque density and power density are improved.
Drawings
The above features, technical features, advantages and implementation of a flat permanent magnet synchronous motor will be further described in the following in a clear and understandable manner by describing preferred embodiments with reference to the accompanying drawings.
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is an exploded view of a three-dimensional structure of the present utility model;
FIG. 3 is a perspective exploded view of the second embodiment of the present utility model;
FIG. 4 is a side view of the present utility model;
FIG. 5 is a side cross-sectional view of the present utility model;
FIG. 6 is a side cross-sectional view of the stator assembly and housing combination of the present utility model;
fig. 7 is a side cross-sectional view of a rotor member according to the present utility model.
In the figure: stator 10, armature 101, stator potting layer 102, three-phase lead-out wire 103, lead-out plug 104, rotor 20, bearing gland 201, first adjusting washer 202, screw 203, rotor yoke 204, magnetic core 205, rotor potting layer 206, annular pillow block 241, angular contact bearing 207,
Detailed Description
The utility model is further illustrated by the following examples in connection with figures 1-7:
example 1
Referring to fig. 1-3, the flat permanent magnet synchronous motor comprises a flat casing 50, wherein the inner cavity of the casing 50 is disc-shaped, a center shaft 501 is integrally formed at the center of the circle of the inner wall of the casing 50, in the embodiment, the center shaft 501 is of a hollow structure so as to enable wires to pass through to supply power for the permanent magnet synchronous motor, meanwhile, heat dissipation is effectively improved, the weight of the casing 50 is reduced, and a stator 10 and a rotor 20 which are arranged from outside to inside with the center shaft 501 as an axis are arranged in the inner cavity of the casing 50; in this embodiment, at least one second adjusting spacer 40 for adjusting the relative position between the stator 10 and the mounting end surface of the rotor 20 is sleeved on the root portion of the center shaft 501, and the relative position between the stator 10 and the mounting end surface of the rotor 20 is adjusted by increasing or decreasing the number of the second adjusting spacers 40, so as to ensure electromagnetic induction between the rotor 20 and the stator 10.
The rotor 20 is arranged in the stator 10 after being assembled and rotates by taking the center shaft 501 as an axis after being started, a nut 30 for rotating and positioning the rotor 20 is sleeved on the free end of the center shaft 501 in a threaded manner, and two shaft end fixing sheets 60 are symmetrically arranged on one side of the rotor 20, which is away from the shell 50, so as to be matched with screws to fix the shaft ends of required driving equipment;
in this embodiment, the stator 10 and the rotor 20 are arranged in the body of the flat casing 50, on the one hand, the rotor 20 adopts a built-in design mode, is arranged in the stator 10 and is matched with the middle shaft 501 of the E-shaped structure (refer to fig. 6), the middle shaft 501 is arranged in the rotor 20 in a bearing manner, so that the axial height is reduced, the space occupied by the bearing in the axial direction in the traditional motor structural design is effectively avoided, and the motor structure is more compact and more flattened due to the design scheme of the built-in bearing;
on the other hand, the flattened internal arrangement also improves the air gap magnetic flux under the unit volume, the air gap magnetic field of the motor approaches to sinusoidal, the running harmonic content of the motor is low, the counter-potential of the winding presents sinusoidal, the motor loss can be effectively reduced, and the motor efficiency, torque density and power density are improved.
In this embodiment, as shown in fig. 3 to 6, the stator 10 includes:
the armature 101 is fixed in the inner cavity of the casing 50 through high-temperature structural adhesive, in the embodiment, the casing 50 and the armature 101 are assembled in an interference fit mode and in a hot pressing mode, and the assembling surface is assisted with the high-temperature structural adhesive, so that the firmness between the casing 50 and the armature 101 is effectively ensured;
a three-phase outgoing line 103 having one end connected to the armature 101 and the other end led out to the outer cavity of the casing 50;
and, the outlet plug 104 is encapsulated between the three-phase outgoing line 103 and the casing 50, so as to avoid damage to the three-phase outgoing line 103 caused by the casing 50;
in this embodiment, as shown in fig. 1-3 and 7, the rotor 20 includes a bearing cover 201 and a rotor yoke 204 that are sleeved on a central shaft 501 and sequentially arranged from inside to outside, the bearing cover 201 is fixed with the rotor yoke 204 by a plurality of screws 203, and a plurality of magnetic cores 205 distributed in an annular array are fixed on an annular outer wall of the rotor yoke 204, in this embodiment, the magnetic cores 205 are made of samarium cobalt of permanent magnets; an annular pillow block 241 for being matched with the shaft end of the required driving equipment to be sleeved and positioned is integrally formed in the middle of one end of the rotor yoke 204, which is away from the casing 50;
the middle part of the rotor yoke 204 is provided with a concentric cylindrical through hole with a convex cross section, a large inner diameter section of the concentric cylindrical through hole is provided with a plurality of angular contact bearings 207 coaxially sleeved on the center shaft 501, and the nuts 30 are positioned on a small inner diameter section of the concentric cylindrical through hole and are abutted against the outer end surface of the outermost angular contact bearing 207, and it can be understood that a small clearance fit mode is adopted between the inner ring of the angular contact bearing 207 and the center shaft 501, so that the motor is convenient to disassemble in the debugging process on the basis of ensuring concentricity;
in this embodiment, the bearing gland 201 performs axial pretension on the angular contact bearing 207 in the axial direction, and cooperates with the fixation of the nut 30 at the other end, so as to realize the rotational positioning of the rotor 20 by taking the central shaft 501 as the axis, after the start, the relative motion between the stator 10 and the rotor 20 adopts the linking mode of the angular contact bearing 207, effectively improves the overload resistance and the load resistance of the motor in the flight and launching processes, combines the pretension on the angular contact bearing 207 in the axial direction, effectively avoids the problem of axial movement of the rotor 20 caused by the play of the angular contact bearing 207, and effectively improves the running stability of the rotor.
In this embodiment, as shown in fig. 7, at least one first adjusting spacer 202 for controlling the height difference between the end surface of the rotor yoke 204 and the end surface of the angular contact bearing 207 is further disposed between the bearing gland 201 and the rotor yoke 204, so as to control the height difference between the end surface of the rotor yoke 204 and the end surface of the angular contact bearing 207 to be between 0.01 and 0.04mm, so as to ensure that the angular contact bearing 207 has sufficient pretightening force in the axial direction.
Example 2
The difference between this embodiment and embodiment 1 is that, as shown in fig. 3, the armature 101 includes a stator core and a winding coil wound on the stator core, and a stator potting layer 102 for potting the armature 101 into an integral structure is provided outside the stator core and the winding coil;
a rotor encapsulating layer 206 for encapsulating the rotor yoke 204 and the plurality of magnetic cores 205 into an integral structure is arranged on the outer wall of the rotor yoke 204; the outlet plug 104 is encapsulated between the three-phase outlet 103 and the casing 50, and it can be understood that the outlet plug is formed into a whole after encapsulation, and can assist turning the outer circle of the rotor yoke 204, so that the concentricity of the rotor is effectively improved on the basis of ensuring sufficient air gap magnetic density;
in this embodiment, the stator potting layer 102 and the rotor potting layer 206 are made of epoxy resin materials, so that the structural strength, waterproof property, insulating strength and heat dissipation property of the winding are effectively improved, the stability of the overall structure of the flat permanent magnet synchronous motor is improved, the power density of the motor is improved under the same volume, and the service life and reliability of the motor are effectively prolonged.
Other undescribed structures refer to embodiment 1.
In the description of the present utility model, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model, but it should be understood by those skilled in the art that the present utility model is not limited thereto, and that the present utility model is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (8)
1. The flat permanent magnet synchronous motor comprises a flat shell (50), and is characterized in that the inner cavity of the shell (50) is disc-shaped, a center shaft (501) is integrally formed at the center position of the inner wall of the shell (50), and a stator (10) and a rotor (20) which are arranged from outside to inside with the center shaft (501) as an axis are arranged in the inner cavity of the shell (50);
the rotor (20) is arranged in the stator (10) after being assembled and rotates by taking the center shaft (501) as an axis after being started, a nut (30) for rotating and positioning the rotor (20) is sleeved on the free end of the center shaft (501), and two shaft end fixing pieces (60) are symmetrically arranged on one side, away from the shell (50), of the rotor (20) to be matched with the shaft ends of driving equipment required by screw fixation.
2. The flat permanent magnet synchronous motor according to claim 1, wherein: the root of the center shaft (501) is sleeved with at least one second adjusting gasket (40) for adjusting the relative position between the stator (10) and the installation end surface of the rotor (20).
3. The flat permanent magnet synchronous motor according to claim 1, wherein: the stator (10) comprises:
an armature (101) fixed in the inner cavity of the casing (50) through high-temperature structural adhesive;
a three-phase outgoing line (103) with one end connected to the armature (101) and the other end led out to the outer cavity of the casing (50);
and a wire outlet plug (104) which is encapsulated between the three-phase outgoing wire (103) and the casing (50).
4. A flat permanent magnet synchronous motor according to claim 3, wherein: the armature (101) comprises a stator core and a winding coil wound on the stator core, and a stator potting layer (102) for potting the armature (101) into an integral structure is arranged outside the stator core and the winding coil.
5. The flat permanent magnet synchronous motor according to claim 1, wherein: the rotor (20) comprises a bearing gland (201) and a rotor magnetic yoke (204), wherein the bearing gland (201) and the rotor magnetic yoke (204) are sleeved on a center shaft (501) and sequentially arranged from inside to outside, the bearing gland (201) is fixed with the rotor magnetic yoke (204) through a plurality of screws (203), and a plurality of magnetic cores (205) distributed in an annular array are fixed on the annular outer wall of the rotor magnetic yoke (204);
the middle part of rotor yoke (204) has offered the concentric column through-hole that the cross-section is "protruding", and the big internal diameter section of concentric column through-hole is equipped with angular contact bearing (207) that a plurality of coaxial cover was located on axis (501), and nut (30) are located the little internal diameter section of concentric column through-hole and butt outside angular contact bearing (207) outer terminal surface.
6. The flat permanent magnet synchronous motor according to claim 5, wherein: at least one first adjusting gasket (202) for controlling the height difference between the end face of the rotor magnetic yoke (204) and the end face of the angular contact bearing (207) is further arranged between the bearing gland (201) and the rotor magnetic yoke (204).
7. The flat permanent magnet synchronous motor according to claim 5, wherein: and a rotor encapsulating layer (206) used for encapsulating the rotor yoke (204) and the magnetic cores (205) into an integrated structure is arranged on the outer wall of the rotor yoke (204).
8. The flat permanent magnet synchronous motor according to any one of claims 5-7, characterized in that: the middle part of one end of the rotor magnetic yoke (204) which is far away from the shell (50) is integrally formed with an annular pillow block (241) which is used for being matched with the shaft end of the required driving equipment to be sleeved and positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222571706.6U CN219086897U (en) | 2022-09-27 | 2022-09-27 | Flat permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222571706.6U CN219086897U (en) | 2022-09-27 | 2022-09-27 | Flat permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219086897U true CN219086897U (en) | 2023-05-26 |
Family
ID=86387980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222571706.6U Active CN219086897U (en) | 2022-09-27 | 2022-09-27 | Flat permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219086897U (en) |
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2022
- 2022-09-27 CN CN202222571706.6U patent/CN219086897U/en active Active
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