CN219802090U - Brushless motor - Google Patents
Brushless motor Download PDFInfo
- Publication number
- CN219802090U CN219802090U CN202320922481.6U CN202320922481U CN219802090U CN 219802090 U CN219802090 U CN 219802090U CN 202320922481 U CN202320922481 U CN 202320922481U CN 219802090 U CN219802090 U CN 219802090U
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- China
- Prior art keywords
- fan
- brushless motor
- main body
- motor
- stator
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Links
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 230000017525 heat dissipation Effects 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 238000002955 isolation Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229920001296 polysiloxane Polymers 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000000741 silica gel Substances 0.000 description 6
- 229910002027 silica gel Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model provides a brushless motor, which comprises a cooling fan, wherein the cooling fan is positioned between a stator and a rotor; the stator also comprises an isolating sleeve which is annularly arranged at the periphery of the connecting sleeve, the isolating sleeve, the connecting sleeve and the chassis enclose an annular groove, and the cooling fan is arranged in the annular groove; the cooling fan comprises a fan main body and a plurality of fan blades which are arranged on the periphery of the fan main body, wherein the fan main body is covered above the connecting sleeve so that the fan blades are positioned in the annular groove, and the rotating shaft penetrates through the top of the fan main body and is fixedly connected with the fan main body. According to the utility model, the cooling fan is additionally arranged between the rotor and the stator and is used for assisting the air inlet at the bottom of the motor and improving the air inlet flow at the bottom of the motor, so that enough air quantity is provided for heat dissipation of the motor to improve the heat dissipation effect of the motor, and the technical problem that the heat dissipation effect is affected due to the fact that the existing motor lacks an air inlet assisting structure and relies on natural air inlet to cause limited flow is avoided.
Description
Technical Field
The utility model relates to the technical field of brushless motors, in particular to a brushless motor.
Background
With the increasing maturity and perfection of technology, brushless motors are rapidly developed in various fields such as aeromodelling, medical equipment, household appliances, electric vehicles and the like although the development time of the brushless motors in China is short. In recent years, development of brushless motors has promoted rapid development in the field of unmanned aerial vehicles.
The brushless motor mainly comprises a stator and a rotor, wherein an air inlet grille is arranged at the bottom of the stator and used for naturally cooling the motor, the rotor can be arranged as an outer rotor or an inner rotor, and the brushless motor needs to be cooled effectively in the working process of the brushless motor so as to ensure that the brushless motor is in a good working state.
In the prior art, a centrifugal fan is generally arranged at the rotor end of a brushless motor to radiate heat of the whole motor, natural air inlet is relied on at the bottom of the motor, and the air is discharged through the fan at the rotor end.
Disclosure of Invention
Based on the above, the utility model aims to provide a brushless motor so as to solve the technical problem that the heat dissipation effect is not ideal due to the limited flow in the mode that the brushless motor in the prior art dissipates heat to the motor through natural air inlet at the bottom of the motor.
The utility model provides a brushless motor, which comprises a stator, a rotor and a rotating shaft, wherein the stator comprises a chassis and a connecting sleeve which is positioned above the chassis and is arranged in the center of the chassis, the rotating shaft penetrates through the connecting sleeve to movably connect the stator and the rotor, and the brushless motor further comprises a cooling fan which is positioned between the stator and the rotor;
the stator also comprises an isolation sleeve which is annularly arranged at the periphery of the connecting sleeve, an annular groove is formed by the isolation sleeve, the connecting sleeve and the chassis in an enclosing mode, and the cooling fan is arranged in the annular groove;
the cooling fan comprises a fan main body and a plurality of fan blades which are arranged on the periphery of the fan main body, wherein the fan main body is covered above the connecting sleeve so that the fan blades are positioned in the annular groove, and the rotating shaft penetrates through the top of the fan main body and is fixedly connected with the fan main body.
According to the brushless motor, the cooling fan is additionally arranged between the rotor and the stator and used for assisting the air inlet at the bottom of the motor and improving the air inlet flow at the bottom of the motor, so that enough air quantity is provided for heat dissipation of the motor to improve the heat dissipation effect of the motor, and the technical problem that the heat dissipation effect is affected due to the fact that the existing motor lacks an air inlet assisting structure and relies on natural air inlet to cause limited flow is avoided; specifically, radiator fan is located between stator and the rotor and locates in the annular groove, radiator fan is through the air inlet grille of stator from motor bottom induced draft and to the rotor air supply, rethread rotor end fan is exhausted in order to dispel the heat to the motor, it helps the motor bottom to induced draft to add to establish radiator fan, improve the air inlet flow of motor bottom, thereby reach the effect that reduces the inside temperature of motor when increasing the heat dissipation capacity, the brushless motor among the prior art has been solved and has been given motor radiating mode through motor bottom natural air inlet, because the flow is limited leads to the unsatisfactory technical problem of radiating effect.
In addition, the brushless motor according to the present utility model may further have the following additional technical features:
further, a through hole is formed in the top of the fan main body, and the rotating shaft is fixedly connected with the fan main body through the through hole.
Further, the cooling fan further comprises a supporting structure, wherein the supporting structure is arranged on the inner side of the top of the fan main body, and is annularly arranged on the periphery of the through hole.
Further, the support structure includes a trapezoid in longitudinal cross-sectional shape.
Further, the height of the supporting structure is 1-1.2mm.
Further, the cooling fan further comprises a plurality of limiting structures, the limiting structures are symmetrically arranged, and the limiting structures are located on the outer side of the top of the fan main body and are annularly arranged on the periphery of the through hole.
Further, the rotor comprises a front cover, a plurality of limit grooves are formed in the inner side of the top of the front cover, and the limit grooves are matched with the limit structures in a one-to-one correspondence mode.
Further, a gap is arranged between the fan main body and the connecting sleeve, and the gap value is 1-1.2mm.
Further, a gap is formed between the bottom of the fan main body and the bottom of the annular groove.
Further, brushless motor still includes iron core and heat conduction silica gel pad, the rotor still includes the steel ring, the steel ring is connected the protecgulum just with the isolation sleeve encloses into the iron core groove, the iron core is located in the iron core groove, the heat conduction silica gel pad is located the chassis with between the iron core.
Drawings
Fig. 1 is a schematic structural diagram of a brushless motor according to an embodiment of the utility model;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a line drawing of the structure of FIG. 1;
FIG. 4 is a combined view of a stator and a cooling fan according to an embodiment of the utility model;
FIG. 5 is a schematic view of a stator according to an embodiment of the present utility model;
fig. 6 is a schematic structural diagram of a heat dissipating fan according to an embodiment of the present utility model;
FIG. 7 is a longitudinal cross-sectional view of FIG. 6;
description of main reference numerals:
| cover plate | 110 | Front cover | 120 |
| Steel ring | 130 | Heat radiation fan | 200 |
| Fan main body | 210 | Fan blade | 220 |
| Through hole | 230 | Limiting structure | 240 |
| Supporting structure | 250 | Iron core | 300 |
| Stator | 400 | Connecting sleeve | 410 |
| Isolation sleeve | 420 | Chassis | 430 |
| Rubber sleeve | 500 | Rotating shaft | 610 |
| Bearing | 620 | Lock shaft gasket | 630 |
The utility model will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. 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," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In order to solve the brushless motor in the prior art and give the motor radiating mode through motor bottom natural wind, because the flow is limited and lead to the unsatisfactory technical problem of radiating effect. The utility model provides a brushless motor, in particular to a brushless motor, on one hand, a cooling fan is added in the motor, air is sucked from the bottom of the motor and exhausted towards a front cover, so that the air inflow at the bottom of the motor is increased, meanwhile, the air in the motor is exhausted by rotating a rotor, the cooling fan and a rotor end fan are tightly matched with a rotating shaft, the high rotating speed is kept, and the air flow in the motor is increased in unit time, so that the heat dissipation capacity is increased, and the effect of better reducing the temperature of the motor is realized.
Furthermore, the utility model optimizes the stator structure, and the heat conduction silica gel pad is attached to the gap between the stator and the iron core, so that the heat generated by the iron core can be rapidly discharged at the bottom of the motor through the heat conduction silica gel pad due to the increase of the air flow at the bottom of the motor, and the heat dissipation efficiency of the motor is further improved. Specific:
referring to fig. 1-7, a brushless motor according to an embodiment of the utility model includes a stator 400, a rotor and a rotating shaft 610, wherein the rotating shaft 610 is movably connected with the rotor and the stator 400.
Specifically, the rotor includes a front cover 120, cover plates 110 and steel rings 130 respectively disposed at two ends of the front cover 120, the brushless motor further includes an iron core 300, the steel rings 130 and the stator 400 enclose an iron core 300 slot, and the iron core 300 is disposed in the iron core 300 slot; further, the stator 400 includes a chassis 430, a connection sleeve 410 located above the chassis 430 and located in the center of the chassis 430, and a rotating shaft 610 movably connects the stator 400 and the rotor through the connection sleeve 410; the stator 400 further includes an isolation sleeve 420 annularly disposed on the periphery of the connection sleeve 410, the isolation sleeve 420, the connection sleeve 410 and the chassis 430 enclose an annular groove, and in order to improve the heat dissipation effect of the brushless motor, the brushless motor in this embodiment further includes a heat dissipation fan 200, where the heat dissipation fan 200 is disposed in the annular groove; in this embodiment, the steel ring 130 and the isolation sleeve 420 enclose the core 300 slot.
In the present embodiment, the heat dissipation fan 200 includes a fan main body 210 and a plurality of fan blades 220 disposed on the periphery of the fan main body 210, wherein the fan main body 210 is covered over the connection sleeve 410, so that the fan blades 220 are located in the annular groove, and the rotation shaft 610 passes through the top of the fan main body 210 and is fixedly connected with the fan main body 210. As a specific example, the top of the fan main body 210 is provided with a through hole 230, and the rotation shaft 610 is fixedly connected with the fan main body 210 through the through hole 230. The heat dissipation fan 200 further includes a supporting structure 250 and a plurality of limiting structures 240, wherein the supporting structure 250 is disposed on the top inner side of the fan main body 210 and is annularly disposed on the periphery of the through hole 230. Further, the longitudinal cross-sectional shape of the support structure 250 may be one of a trapezoid, a rectangle, or a circle, and in this embodiment, the longitudinal cross-sectional shape of the support structure 250 is a trapezoid. Further, the height of the support structure 250 is 1-1.2mm, preferably the height of the support structure 250 is 1.1mm.
Further, the plurality of limiting structures 240 are symmetrically disposed, and the limiting structures 240 are located at the top outer side of the fan main body 210 and are annularly disposed at the periphery of the through hole 230. In order to achieve the fixed connection between the cooling fan 200 and the rotor, the cooling fan 200 is driven to rotate by the movement of the rotor, in this embodiment, a plurality of limiting grooves are disposed on the top inner side of the front cover 120 of the rotor, and the limiting grooves are in one-to-one correspondence with the limiting structures 240. Further, a gap is provided between the fan main body 210 and the connection sleeve 410, and the gap value is 1-1.2mm, preferably, the gap value between the fan main body 210 and the connection sleeve 410 is 1.1mm.
In order that the bottom of the cooling fan 200 does not rub against the stator 400 when the cooling fan 200 rotates, that is, in order that the bottom of the cooling fan 200 does not rub against the annular groove, in the present embodiment, a gap is provided between the bottom of the fan main body 210 and the bottom of the annular groove, specifically, the gap is 1-1.2mm, and preferably, the value of the gap between the bottom of the fan main body 210 and the bottom of the annular groove is 1.1mm.
In this embodiment, in order to further provide the heat dissipation effect of the brushless motor, as a specific example, a heat conductive silica gel pad is disposed between the chassis 430 and the core 300, and a rubber sleeve 500 is disposed on the stator 400, and the heat conductive silica gel pad is attached to the rubber sleeve 500.
Specifically, in the present embodiment, the brushless motor further includes a bearing 620, and the bearing 620 is disposed in the connection sleeve 410 for connection between the rotating shaft 610 and the connection sleeve 410, so that the rotating shaft 610 fixes the stator 400 without affecting rotation of the rotating shaft 610, and further, in some alternative embodiments, the brushless motor may further include a lock shaft gasket 630, where the lock shaft gasket 630 is used for connection between the bearing 620 and the rotating shaft 610.
In summary, in the brushless motor according to the above embodiment of the present utility model, the heat dissipation fan is additionally disposed between the rotor and the stator, so as to assist the air intake at the bottom of the motor, and improve the air intake flow at the bottom of the motor, so as to provide sufficient air volume for heat dissipation of the motor to improve the heat dissipation effect of the motor, and avoid the technical problem that the existing motor lacks an air intake assist structure and depends on natural air intake to cause flow limitation to affect the heat dissipation effect; specifically, radiator fan is located between stator and the rotor and locates in the annular groove, radiator fan is through the air inlet grille of stator from motor bottom induced draft and to the rotor air supply, rethread rotor end fan is exhausted in order to dispel the heat to the motor, it helps the motor bottom to induced draft to add to establish radiator fan, improve the air inlet flow of motor bottom, thereby reach the effect that reduces the inside temperature of motor when increasing the heat dissipation capacity, the brushless motor among the prior art has been solved and has been given motor radiating mode through motor bottom natural air inlet, because the flow is limited leads to the unsatisfactory technical problem of radiating effect.
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 herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made 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 (10)
1. The brushless motor comprises a stator, a rotor and a rotating shaft, wherein the stator comprises a chassis and a connecting sleeve which is positioned above the chassis and is arranged in the center of the chassis, and the rotating shaft penetrates through the connecting sleeve to movably connect the stator and the rotor;
the stator also comprises an isolation sleeve which is annularly arranged at the periphery of the connecting sleeve, an annular groove is formed by the isolation sleeve, the connecting sleeve and the chassis in an enclosing mode, and the cooling fan is arranged in the annular groove;
the cooling fan comprises a fan main body and a plurality of fan blades which are arranged on the periphery of the fan main body, wherein the fan main body is covered above the connecting sleeve so that the fan blades are positioned in the annular groove, and the rotating shaft penetrates through the top of the fan main body and is fixedly connected with the fan main body.
2. The brushless motor of claim 1, wherein a through hole is provided at a top of the fan body, and the rotating shaft is fixedly connected with the fan body through the through hole.
3. The brushless motor of claim 2 wherein the cooling fan further comprises a support structure disposed inside a top portion of the fan body and annularly disposed about a periphery of the through hole.
4. A brushless motor according to claim 3, wherein the support structure comprises a trapezoid in longitudinal cross-sectional shape.
5. A brushless motor according to claim 3, wherein the height of the support structure is 1-1.2mm.
6. The brushless motor of claim 2, wherein the heat dissipation fan further comprises a plurality of limit structures, the limit structures are symmetrically arranged, and the limit structures are located at the outer side of the top of the fan main body and are annularly arranged at the periphery of the through hole.
7. The brushless motor of claim 6 wherein the rotor comprises a front cover, wherein a plurality of limit grooves are formed in the inner side of the top of the front cover, and the limit grooves are in one-to-one correspondence with the limit structures.
8. A brushless motor according to claim 1, wherein a gap is provided between the fan body and the connection sleeve, the gap having a value of 1-1.2mm.
9. The brushless motor of claim 1 wherein a gap is provided between a bottom of the fan body and a bottom of the annular groove.
10. The brushless motor of claim 7 further comprising an iron core and a thermally conductive silicone pad, wherein the rotor further comprises a steel rim, wherein the steel rim is connected to the front cover and encloses an iron core slot with the isolation sleeve, the iron core is disposed in the iron core slot, and the thermally conductive silicone pad is disposed between the chassis and the iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320922481.6U CN219802090U (en) | 2023-04-21 | 2023-04-21 | Brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320922481.6U CN219802090U (en) | 2023-04-21 | 2023-04-21 | Brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219802090U true CN219802090U (en) | 2023-10-03 |
Family
ID=88152974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320922481.6U Active CN219802090U (en) | 2023-04-21 | 2023-04-21 | Brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219802090U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117294076A (en) * | 2023-11-27 | 2023-12-26 | 南昌三瑞智能科技股份有限公司 | Motor cooling system and unmanned aerial vehicle power device |
-
2023
- 2023-04-21 CN CN202320922481.6U patent/CN219802090U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117294076A (en) * | 2023-11-27 | 2023-12-26 | 南昌三瑞智能科技股份有限公司 | Motor cooling system and unmanned aerial vehicle power device |
| CN117294076B (en) * | 2023-11-27 | 2024-02-20 | 南昌三瑞智能科技股份有限公司 | Motor cooling system and unmanned aerial vehicle power device |
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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 |