CN219394545U - Brushless motor - Google Patents
Brushless motor Download PDFInfo
- Publication number
- CN219394545U CN219394545U CN202320139426.XU CN202320139426U CN219394545U CN 219394545 U CN219394545 U CN 219394545U CN 202320139426 U CN202320139426 U CN 202320139426U CN 219394545 U CN219394545 U CN 219394545U
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- Prior art keywords
- stator
- cover
- hole
- brushless motor
- rear cover
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- 239000000428 dust Substances 0.000 claims abstract description 26
- 230000017525 heat dissipation Effects 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000011148 porous material Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Motor Or Generator Frames (AREA)
Abstract
The utility model discloses a brushless motor, and relates to the field of motor equipment, wherein the brushless motor comprises a rotor assembly and a stator assembly connected with the rotor assembly; the stator assembly comprises a stator rear cover and a stator coil sleeved on the stator rear cover, a stator bottom cover is arranged on one side, far away from the rotor assembly, of the stator rear cover, and a dust screen is arranged between the stator bottom cover and the stator rear cover; the utility model can solve the technical problem that in the prior art, foreign matters with the diameter larger than an air gap value enter the motor and can cause motor faults.
Description
Technical Field
The utility model relates to the field of motor equipment, in particular to a brushless motor.
Background
The brushless DC motor is composed of a motor main body and a driver, is a typical electromechanical integrated product, and has wide application because of the great advantage of the performance compared with the common traditional brushless DC motor, and the brushless DC motor has wide application in the unmanned aerial vehicle field and is called as a 'power heart'.
In general, a brushless motor of an unmanned aerial vehicle is designed to have a relatively small magnet gap (hereinafter referred to as an air gap) for high efficiency, the value of the magnet gap is generally 0.2mm to 1mm, and if foreign matters with diameters larger than the air gap value enter the interior of the motor, risks such as motor jamming, blocking, burning and the like are increased.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a brushless motor and aims to solve the technical problem that foreign matters with diameters larger than an air gap value in the prior art enter the motor to cause motor faults.
An aspect of the present utility model is to provide a brushless motor including:
a rotor assembly, a stator assembly connected to the rotor assembly;
the stator assembly comprises a stator rear cover and a stator coil sleeved on the stator rear cover, a stator bottom cover is arranged on one side, far away from the rotor assembly, of the stator rear cover, and a dust screen is arranged between the stator bottom cover and the stator rear cover;
the dustproof net is provided with a plurality of symmetrical connecting holes, a first mounting hole is formed in one side, close to the connecting holes, of the rear cover of the stator, a second mounting hole is formed in one side, close to the connecting holes, of the bottom cover of the stator, and the first mounting hole, the connecting holes and the second mounting holes are penetrated through fasteners respectively, so that the dustproof net and the bottom cover of the stator are fixed on the rear cover of the stator.
Compared with the prior art, the brushless motor shown in the embodiment is adopted, and the beneficial effects are that: the brushless motor provided by the utility model can prevent foreign matters from entering the inner wall of the motor, and specifically comprises a rotor assembly and a stator assembly connected with the rotor assembly; the stator assembly comprises a stator rear cover and a stator coil sleeved on the stator rear cover, a stator bottom cover is arranged on one side, far away from the rotor assembly, of the stator rear cover, and a dust screen is arranged between the stator bottom cover and the stator rear cover; be equipped with a plurality of symmetrical connecting holes on the dust screen, the lid is equipped with first mounting hole in one side that is close to the connecting hole behind the stator, the stator bottom is equipped with the second mounting hole in one side that is close to the connecting hole, penetrate first mounting hole, connecting hole, second mounting hole respectively through the fastener to cover behind being fixed in the stator with dust screen and stator bottom, the setting of dust screen will increase brushless motor's life, improve the durability, prevent that the foreign matter from getting into motor inner wall, cause motor jamming, locked rotor, burn out the production of scheduling trouble. Therefore, the technical problem that foreign matters with diameters larger than an air gap value enter the motor and cause motor faults in the prior art is solved.
According to one aspect of the above technical solution, the dust-proof net is provided with a clamping hole on a side close to the connecting hole, the stator rear cover is provided with a fixing piece on a side close to the clamping hole, and the fixing piece passes through the clamping hole and is connected with the stator bottom cover.
According to one aspect of the above technical solution, the aperture of the dust screen is 0.2-0.8mm.
According to one aspect of the above technical scheme, the rotor assembly comprises a steel shaft, a rotor front cover sleeved on the steel shaft, and a steel ring connected with the rotor front cover, wherein the stator rear cover is sleeved on the steel shaft, and the steel ring wraps the stator coil.
According to one aspect of the above technical solution, the rotor front cover is provided with a centrifugal heat dissipation end cover on one side far away from the steel ring, and the centrifugal heat dissipation end cover is provided with a plurality of heat dissipation fins.
According to one aspect of the above technical solution, the centrifugal heat dissipation end cover is provided with a plurality of symmetrical fixing holes, a front cover hole is formed in one side of the rotor front cover, which is close to the fixing holes, and the centrifugal heat dissipation end cover is fixed on the rotor front cover through the fixing holes and the front cover hole respectively by fasteners.
According to one aspect of the above technical scheme, the central portion of the centrifugal heat dissipation end cover is provided with a sleeved hole in a penetrating manner.
According to one aspect of the above technical solution, the rotor front cover is provided with a clamping portion on a side close to the sleeved hole, and the clamping portion passes through the sleeved hole, so that the centrifugal heat dissipation end cover is sleeved on the rotor front cover.
According to one aspect of the technical scheme, the edge of the dustproof net is provided with a wire protection hole, and the dustproof net is internally provided with a wire protection rubber sleeve for connecting an external power supply.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a brushless motor according to an embodiment of the utility model;
fig. 2 is a cross-sectional view of a brushless motor in an embodiment of the utility model;
fig. 3 is an exploded construction view of a brushless motor in an embodiment of the present utility model;
FIG. 4 is a schematic view of the centrifugal heat sink end cap and the rotor front cover in an embodiment of the utility model;
fig. 5 is a schematic structural view of a stator back cover, a dust screen and a stator bottom cover according to an embodiment of the present utility model;
description of the drawings element symbols:
rotor assembly 10, stator assembly 20, steel shaft 11, centrifugal heat radiation end cover 12, rotor front cover 13, steel ring 14, stator coil 21, stator rear cover 22, dust screen 23, wire protection rubber sleeve 24, stator bottom cover 25, cooling fin 120, fixing hole 121, sleeve hole 122, clamping part 130, front cover hole 131, first mounting hole 220, second mounting hole 250, connecting hole 230, clamping hole 231, fixing piece 221, wire protection hole 232.
Detailed Description
In order to make the objects, features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and the like are used herein for descriptive purposes only and not to indicate or imply that the apparatus or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
In the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-5, a brushless motor provided by the present utility model includes a rotor assembly 10, a stator assembly 20 connected to the rotor assembly 10; the stator assembly 20 comprises a stator rear cover 22 and a stator coil 21 sleeved on the stator rear cover 22; the rotor assembly 10 comprises a steel shaft 11, a rotor front cover 13 sleeved on the steel shaft 11, and a steel ring 14 connected with the rotor front cover 13, wherein a stator rear cover 22 is sleeved on the steel shaft 11, and the steel ring 14 wraps a stator coil 21. The brushless motor is operated by the cooperation of the stator assembly 20 and the rotor assembly 10.
The stator back cover 22 is provided with a stator bottom cover 25 at a side far away from the rotor assembly 10, and a dust screen 23 is provided between the stator bottom cover 25 and the stator back cover 22. The aperture of the dust screen 23 is 0.2-0.8mm, which is used for preventing foreign matters from entering the inner wall of the motor to cause the faults of motor jamming, locked rotor, burning and the like. The dust screen 23 will increase the service life of the brushless motor and durability.
Preferably, the aperture of the dust screen 23 is 0.5mm, and the size of the air gap of the brushless motor is matched, so that the brushless motor achieves the optimal dust-proof effect.
Further, the dust-proof net 23 is provided with a plurality of symmetrical connection holes 230, the stator back cover 22 is provided with a first mounting hole 220 at a side close to the connection hole 230, the stator bottom cover 25 is provided with a second mounting hole 250 at a side close to the connection hole 230, and the first mounting hole 220, the connection hole 230 and the second mounting hole 250 are respectively penetrated by fasteners so as to fix the dust-proof net 23 and the stator bottom cover 25 on the stator back cover 22.
Further, the dust screen 23 has a clamping hole 231 near the connecting hole 230, and the stator back cover 22 has a fixing member 221 near the clamping hole 231, and the fixing member 221 passes through the clamping hole 231 and is connected to the stator bottom cover 25. The dust screen 23 is further limited, and stability of the dust screen 23 is improved.
The edge of the dust screen 23 is provided with a wire protection hole 232, and the dust screen 23 is provided with a wire protection rubber sleeve 24 in the wire protection hole 232 for connecting an external power supply.
In addition, the rotor front cover 13 is provided with a centrifugal heat dissipation end cover 12 at one side far away from the steel ring 14, and the centrifugal heat dissipation end cover 12 is provided with a plurality of heat dissipation fins 120. Since the dust screen 23 blocks the heat radiation air flow, which may result in poor heat radiation performance of the brushless motor, it is necessary to add the centrifugal heat radiation end cover 12 to enhance heat radiation.
Further, a plurality of symmetrical fixing holes 121 are formed in the centrifugal heat dissipation end cover 12, a front cover hole 131 is formed in one side, close to the fixing holes 121, of the rotor front cover 13, the holes 121 and the front cover holes 131 are respectively fixed through fasteners, and the centrifugal heat dissipation end cover 12 is fixed to the rotor front cover 13.
Further, a sleeve hole 122 is formed in the middle of the centrifugal heat dissipation end cover 12, and a clamping portion 130 is formed on one side of the rotor front cover 13, which is close to the sleeve hole 122, and the clamping portion 130 penetrates through the sleeve hole 122 to sleeve the centrifugal heat dissipation end cover 12 on the rotor front cover 13.
Compared with the prior art, the brushless motor that this embodiment provided, beneficial effect lies in: the brushless motor provided by the utility model can prevent foreign matters from entering the inner wall of the motor, and specifically comprises a rotor assembly and a stator assembly connected with the rotor assembly; the stator assembly comprises a stator rear cover and a stator coil sleeved on the stator rear cover, a stator bottom cover is arranged on one side, far away from the rotor assembly, of the stator rear cover, and a dust screen is arranged between the stator bottom cover and the stator rear cover; be equipped with a plurality of symmetrical connecting holes on the dust screen, the lid is equipped with first mounting hole in one side that is close to the connecting hole behind the stator, the stator bottom is equipped with the second mounting hole in one side that is close to the connecting hole, penetrate first mounting hole, connecting hole, second mounting hole respectively through the fastener to cover behind being fixed in the stator with dust screen and stator bottom, the setting of dust screen will increase brushless motor's life, improve the durability, prevent that the foreign matter from getting into motor inner wall, cause motor jamming, locked rotor, burn out the production of scheduling trouble. Therefore, the technical problem that foreign matters with diameters larger than an air gap value enter the motor and cause motor faults in the prior art is solved.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing examples illustrate only a few embodiments of the utility model, and are described in detail, but are not to be construed as limiting the scope of the utility model. It should be noted that it is possible for those skilled in the art to make several variations and modifications without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (9)
1. A brushless motor, the brushless motor comprising:
a rotor assembly, a stator assembly connected to the rotor assembly;
the stator assembly comprises a stator rear cover and a stator coil sleeved on the stator rear cover, a stator bottom cover is arranged on one side, far away from the rotor assembly, of the stator rear cover, and a dust screen is arranged between the stator bottom cover and the stator rear cover;
the dustproof net is provided with a plurality of symmetrical connecting holes, a first mounting hole is formed in one side, close to the connecting holes, of the rear cover of the stator, a second mounting hole is formed in one side, close to the connecting holes, of the bottom cover of the stator, and the first mounting hole, the connecting holes and the second mounting holes are penetrated through fasteners respectively, so that the dustproof net and the bottom cover of the stator are fixed on the rear cover of the stator.
2. The brushless motor of claim 1, wherein the dust screen has a clamping hole on a side near the connecting hole, the stator rear cover has a fixing member on a side near the clamping hole, and the fixing member passes through the clamping hole and is connected with the stator bottom cover.
3. A brushless motor according to claim 2, wherein the dust screen has a pore size of 0.2-0.8mm.
4. The brushless motor of claim 1 wherein the rotor assembly comprises a steel shaft, a rotor front cover sleeved on the steel shaft, a steel ring connected to the rotor front cover, the stator rear cover sleeved on the steel shaft, and the steel ring wrapping the stator coils.
5. The brushless motor of claim 4, wherein a centrifugal heat dissipation end cover is provided on a side of the rotor front cover away from the steel rim, and a plurality of heat dissipation fins are provided on the centrifugal heat dissipation end cover.
6. The brushless motor of claim 5, wherein the centrifugal heat dissipation end cover is provided with a plurality of symmetrical fixing holes, a front cover hole is formed in a side, close to the fixing holes, of the rotor front cover, and the centrifugal heat dissipation end cover is fixed to the rotor front cover through fastening pieces respectively arranged in the fixing holes and the front cover hole.
7. The brushless motor of claim 6, wherein the central portion of the centrifugal heat dissipation end cap is provided with a sleeve hole.
8. The brushless motor of claim 7, wherein the rotor front cover is provided with a clamping portion at a side near the sleeve hole, and the clamping portion passes through the sleeve hole to sleeve the centrifugal heat dissipation end cover on the rotor front cover.
9. The brushless motor of claim 1, wherein a wire protecting hole is formed at an edge of the dustproof net, and a wire protecting rubber sleeve is arranged in the wire protecting hole of the dustproof net for connecting an external power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320139426.XU CN219394545U (en) | 2023-02-06 | 2023-02-06 | Brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320139426.XU CN219394545U (en) | 2023-02-06 | 2023-02-06 | Brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219394545U true CN219394545U (en) | 2023-07-21 |
Family
ID=87186857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320139426.XU Active CN219394545U (en) | 2023-02-06 | 2023-02-06 | Brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219394545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081327A (en) * | 2023-10-18 | 2023-11-17 | 南昌三瑞智能科技股份有限公司 | Integrated motor |
-
2023
- 2023-02-06 CN CN202320139426.XU patent/CN219394545U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081327A (en) * | 2023-10-18 | 2023-11-17 | 南昌三瑞智能科技股份有限公司 | Integrated motor |
| CN117081327B (en) * | 2023-10-18 | 2024-01-05 | 南昌三瑞智能科技股份有限公司 | Integrated motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Manufacturing Center, Building D, No. 888, Tianxiang North Avenue, Nanchang High-tech Industrial Development Zone, Nanchang City, Jiangxi Province 330000 Patentee after: Nanchang Sanrui Intelligent Technology Co.,Ltd. Address before: Manufacturing Center, Building D, No. 888, Tianxiang North Avenue, Nanchang High-tech Industrial Development Zone, Nanchang City, Jiangxi Province 330000 Patentee before: Nanchang SanRui Intelligent Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |