CN212258576U - Active heat dissipation external rotor motor and unmanned aerial vehicle - Google Patents
Active heat dissipation external rotor motor and unmanned aerial vehicle Download PDFInfo
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- CN212258576U CN212258576U CN202021037275.XU CN202021037275U CN212258576U CN 212258576 U CN212258576 U CN 212258576U CN 202021037275 U CN202021037275 U CN 202021037275U CN 212258576 U CN212258576 U CN 212258576U
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Abstract
The utility model provides an active heat dissipation external rotor motor and an unmanned aerial vehicle, wherein the external rotor motor comprises a stator, a rotor, a fan assembly and a rotating shaft, the stator comprises an iron core and a coil, and the coil is arranged on the iron core; the rotor comprises a rotor cover and magnetic sheets, the rotor cover is annular, the stator is arranged in the inner circle of the rotor cover, and the magnetic sheets are arranged on the side wall of the rotor cover facing the stator; the fan assembly is connected with the rotor and comprises at least four blades, a fan cover and a mounting seat, the fan cover is annular, the blades and the mounting seat are positioned in the fan cover, the at least four blades are positioned on the periphery of the mounting seat, the blades are fixedly connected between the fan cover and the mounting seat, the number of the blades is even, the blades are obliquely arranged, and the oblique directions of two adjacent blades are opposite; one end of the rotating shaft is connected with the fan assembly, the other end of the rotating shaft penetrates through the stator, the active heat dissipation of the motor is achieved through the rotation of the blades by adopting the structure, and the temperature inside the motor is effectively reduced.
Description
Technical Field
The utility model relates to an unmanned aerial vehicle field specifically relates to a radiating external rotor electric machine of initiative and unmanned aerial vehicle.
Background
The existing outer rotor motor is widely applied to aircrafts, and the outer rotor motor drives a flight propeller of the aircrafts to rotate. Because the working current of the outer rotor motor is large, the temperature generated by the motor during working is increased, and the existing outer rotor motor is not provided with a heat dissipation structure, and external air flow does not enter the motor, so that the internal temperature of the motor is increased, the demagnetization of the motor is easily caused, and the efficiency of the motor is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reduce radiating external rotor electric machine of initiative of motor inside temperature.
The utility model discloses a second purpose provides an unmanned aerial vehicle with radiating external rotor electric machine of above-mentioned initiative.
In order to achieve the first objective, the active heat dissipation external rotor motor provided by the present invention comprises a stator, a rotor, a fan assembly and a rotating shaft, wherein the stator comprises an iron core and a coil, and the coil is arranged on the iron core; the rotor comprises a rotor cover and magnetic sheets, the rotor cover is annular, the stator is arranged in the rotor cover, and the magnetic sheets are arranged on the side wall of the rotor cover facing the stator; the fan assembly is connected with the rotor and comprises at least four blades, a fan cover and a mounting seat, the fan cover is annular, the blades and the mounting seat are positioned in the fan cover, the at least four blades are positioned on the periphery of the mounting seat, the blades are fixedly connected between the fan cover and the mounting seat, the number of the blades is even, the blades are obliquely arranged, and the oblique directions of two adjacent blades are opposite; the axial first end of pivot is connected with fan assembly, and the axial second end of pivot runs through the stator.
According to the scheme, the fan assembly is installed on the motor of the outer rotor, the blades in the fan assembly are fixedly connected with the fan cover and the mounting seat respectively, the fan assembly is driven to rotate when the rotor rotates, active heat dissipation of the motor is achieved through rotation of the blades, the temperature inside the motor is effectively reduced, the inclination directions of the adjacent blades are opposite, and heat dissipation of the blades in the rotating process of the rotating shaft of the motor can be achieved.
In a further scheme, one side of each blade, which faces the adjacent blade, is provided with an inclined plane or an inclined arc surface.
The further scheme is that the number of the blades is six, one side of each blade, facing to the adjacent blade, is provided with an inclined plane, and the inclination angle of each inclined plane is 36 degrees.
The fan cover is provided with a plurality of first radiating grooves, and the first radiating grooves are respectively positioned between two adjacent blades.
Therefore, the heat dissipation grooves are arranged to help more external air enter the interior of the motor.
The further scheme is that a first through hole and a first inner step are arranged on one side, away from the rotor, of the mounting seat, the first inner step is arranged on the periphery of the first through hole, and the first through hole penetrates through the mounting seat along the axial direction of the rotating shaft; the axial first end of pivot is provided with the card, and first through-hole is passed to the pivot, and the card is connected with the spacing cooperation of first interior step.
It can be seen that the rotating shaft penetrates through the first through hole and is connected with the first inner step in a limiting and matching mode, so that when the rotating shaft of the rotor drives the fan assembly to rotate, the rotating shaft is driven to rotate.
The further scheme is that a raised platform is arranged on one side, facing the rotor, of the mounting seat and is positioned in the center of the stator.
The further scheme is that the outer rotor motor comprises an anti-blocking cover, the anti-blocking cover is in clearance fit with the inner peripheral wall of the fan cover, and a plurality of filtering holes are formed in the anti-blocking cover in distribution.
Therefore, the anti-blocking cover prevents external sand and stone from entering the motor to cause the motor to block the rotation.
The further proposal is that a second inner step is arranged on the inner circle side wall of the fan cover, and the anti-blocking cover is connected with the inner step in a matching way; prevent stifled covering and be provided with first pilot hole and second pilot hole, be provided with the third pilot hole on the mount pad, be provided with the fourth pilot hole on the interior round lateral wall of fan lid, first pilot hole and third pilot hole correspond the setting, and second pilot hole and fourth pilot hole correspond the setting.
It can be seen that the second inner step positions the anti-blocking cover, so that the anti-blocking cover is in clearance fit connection with the fan cover.
The outer rotor motor comprises a motor cover, a stator and a rotor are both positioned between the motor cover and the fan assembly, a second through hole is formed in the center of the motor cover, and a rotating shaft is positioned in the second through hole; the motor cover is provided with a plurality of second radiating grooves, and the second radiating grooves are in a radial shape from the second through holes.
Therefore, the motor cover covers the stator and the rotor, and the heat dissipation groove in the motor cover further improves the heat dissipation effect.
For realizing foretell second purpose, the utility model provides an unmanned aerial vehicle includes the radiating external rotor electric machine of initiative as above.
Drawings
Fig. 1 is a perspective view of an embodiment of the active heat dissipation external rotor motor of the present invention.
Fig. 2 is an exploded view of the active heat dissipation external rotor motor according to the embodiment of the present invention.
Fig. 3 is a schematic diagram of the connection between the fan assembly and the anti-blocking cover in the embodiment of the active heat dissipation external rotor motor of the present invention.
Fig. 4 is a sectional view of the active heat dissipation external rotor motor of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
The utility model provides an active radiating external rotor electric machine uses in the flight work of aircraft, is provided with fan assembly on the external rotor electric machine, drives fan assembly rotation through the rotor and drives the outside air admission motor inside, realizes the inside automatic heat dissipation of motor, avoids because the overheated and magnetic sheet demagnetization's of motor the condition.
Referring to fig. 1 and 2, the active heat dissipation external rotor motor includes a motor cover 1, a stator 2, a rotor, a fan assembly 4, a rotating shaft 5 and an anti-blocking cover 6, wherein the rotor includes a rotor cover 31 and a plurality of magnetic sheets, the rotor cover 31 is annular, the stator 2 is disposed in the rotor cover 31, and the magnetic sheets are disposed on a side wall of the rotor cover 31 facing the stator 2. The stator 2 comprises an iron core 21 and coils 22, wherein the iron core 21 is provided with a plurality of coil mounting positions 23, one coil 22 is correspondingly arranged on one coil mounting position 23, and one magnetic sheet is correspondingly arranged on one coil mounting position 23. A mounting through-hole 24 is provided at the center of the core 21.
Referring to fig. 3, the fan assembly 4 includes six blades 41, a fan cover 42 and a mounting seat 43, the fan cover 42 is annular, the blades 41 and the mounting seat 43 are respectively located in an inner circle of the fan cover 42, the mounting seat 43 is located at a center of the fan cover 42, the blades are located at an outer periphery of the mounting seat, the blades are fixedly connected between the fan cover 42 and the mounting seat 43, and the blades 41 are respectively fixedly connected with the fan cover 42 and the mounting seat 43. In the width direction of the blades 41, the width direction of the blades 41 is arranged perpendicular to the radial direction of the fan cover 42. The blades 41 are arranged obliquely; the opposite pitch of two adjacent blades 41 facilitates the fan assembly 4 to accommodate the turning direction of the motor. The side wall of the blade 41 facing the side of the blade 41 adjacent thereto may be a slanted plane or a slanted arc plane. In the present embodiment, the blades 41 are rectangular sheets, the number of the blades 41 is 6, and the side of the blade 41 facing the blade 1 adjacent to the blade is provided with an inclined plane, and the inclined angle of the inclined plane is 36 °. The number of the blades 41 in the fan assembly 4 is even, and may be 4, 8 or 10, and may be determined according to the actual size of the motor, and the inclination angle of the blade 41 needs to be adjusted according to the rotation speed of the motor, and the higher the rotation speed of the motor is, the smaller the inclination angle of the blade 41 is, that is, the smaller the included angle between the width direction of the blade 41 and the central axis of the rotating shaft 5 is, and the width direction of the blade may be perpendicular to the radial direction of the fan cover.
The side wall of the fan cover 42 facing the stator 2 is provided with an outer step 421 and a plurality of legs 422, the outer step 421 being provided between the legs 422 and the blades 41, one leg 422 being located between two adjacent magnetic pieces. The rotor cover 31 is connected with the outer step 421 in a limiting and matching manner, so that the rotor rotates to drive the fan cover 42 to rotate. A plurality of sets of first heat dissipation grooves are arranged on the radial side wall of the fan cover 42, each set of first heat dissipation grooves includes two first heat dissipation grooves 423, and each set of first heat dissipation grooves 423 is located between two blades 41.
A first through hole 431 is provided through the center of the mount 43 in the axial direction of the rotating shaft 5. The side wall of the mounting base 43 facing the stator 2 is provided with a raised platform 432, the raised platform 432 is in a circular truncated cone shape, and the raised platform 432 is located in the second through hole 13 of the mounting frame 12. A first inner step 433 is arranged on the side wall of the mounting seat 43 facing away from the rotor, and the first inner step 433 is arranged on the periphery of the first through hole 431.
Referring to fig. 4, an axial first end of the rotating shaft 5 is provided with a clamping piece 51, an axial second end of the rotating shaft 5 penetrates through the first through hole 431, the clamping piece 51 is connected with the first inner step 433 in a limiting and matching manner, and the first inner step 433 limits the rotating shaft 5. The clamping piece on the axial first end of the rotating shaft 5 is connected with the mounting seat 43 of the fan assembly 4, the axial second end of the rotating shaft 5 sequentially penetrates through the mounting through hole 24 of the stator 2 and the second through hole 13 of the mounting frame 12, and a bearing 62 is arranged between the rotating shaft 5 and the mounting frame 12.
Prevent that blanking cover 6 is circular, is provided with step 424 in the second on the interior circular wall of fan cover 42, and fan cover 42 is connected with the spacing cooperation of step 424 in the second, and the internal perisporium of fan cover 42 with prevent 6 clearance fit of blanking cover makes to prevent that blanking cover 6 covers the motor inside, prevent to be provided with a plurality of filtration pores 61 on distributing on blanking cover 6, prevent that external grit from getting into inside the motor, lead to the condition of motor stalling. Be provided with first pilot hole 62 and second pilot hole 63 on the anti-blocking cover 6, the aperture of first pilot hole 62 and second pilot hole 63 all is greater than the aperture of filtering hole 61. The mounting seat 43 is provided with a plurality of third fitting holes 434, and the third fitting holes 434 are provided at the outer periphery of the second inner step 424. The inner circular side wall of the fan cover 42 is convexly provided with a plurality of convex columns 425, one convex column 425 is positioned between two adjacent blades 41, the convex column 425 is provided with a fourth assembling hole 426 along the axial direction of the rotating shaft 6, the first assembling hole 62 and the third assembling hole 434 are connected in a one-to-one correspondence manner through screws, and the second assembling hole 63 and the fourth assembling hole 426 are arranged in a one-to-one correspondence manner through screws.
Install fan unit 4 on outer rotor motor, blade 41 in fan unit 4 respectively with fan cover 42, mount pad 43 fixed connection, drive fan unit 4 when the rotor rotates and rotate, the initiative heat dissipation of motor is realized in the rotation of blade 41, make the inside temperature of motor reduce effectively, avoid the magnetic sheet because the condition of the inside overheated demagnetization of motor, and adjacent blade 41's incline direction is opposite, when the motor switches the direction of rotation, also can realize blade 41 and rotate the heat dissipation.
The utility model discloses an unmanned aerial vehicle includes like above-mentioned initiative radiating external rotor electric machine and propeller blade, and the paddle is connected in the external rotor electric machine drive.
Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.
Claims (10)
1. Initiative radiating external rotor electric machine, its characterized in that includes:
a stator including a core and a coil, the coil being disposed on the core;
the rotor comprises a rotor cover and magnetic sheets, the rotor cover is annular, the stator is arranged in the rotor cover, and the magnetic sheets are arranged on the side wall of the rotor cover facing the stator;
the fan assembly is connected with the rotor and comprises at least four blades, a fan cover and a mounting seat, the fan cover is annular, the blades and the mounting seat are positioned in the fan cover, the at least four blades are positioned on the periphery of the mounting seat, the blades are fixedly connected between the fan cover and the mounting seat, the number of the blades is even, the blades are obliquely arranged, and the oblique directions of two adjacent blades are opposite;
the axial first end of pivot with fan assembly is connected, the axial second end of pivot runs through the stator.
2. The active heat dissipation external rotor motor of claim 1, wherein:
one side of each blade, facing the adjacent blade, is provided with an inclined plane or an inclined arc surface.
3. The active heat dissipation external rotor motor of claim 1, wherein:
the quantity of blade is six, the blade is towards rather than adjacent one side of blade is provided with the inclined plane, the inclination of inclined plane is 36.
4. The active heat dissipation external rotor motor of claim 1, wherein:
the fan cover is provided with a plurality of first radiating grooves, and the first radiating grooves are respectively positioned between two adjacent blades.
5. The active heat dissipation external rotor motor of claim 1, wherein:
a first through hole and a first inner step are arranged on one side, away from the rotor, of the mounting seat, the first inner step is arranged on the periphery of the first through hole, and the first through hole penetrates through the mounting seat along the axial direction of the rotating shaft;
the first axial end of pivot is provided with the card, the pivot passes first through-hole, the card with the spacing cooperation of first interior step is connected.
6. The active heat dissipation external rotor motor of claim 5, wherein:
the mounting seat is provided with the bellying platform towards on one side of rotor, the bellying platform is located the center department of stator.
7. The active heat dissipation external rotor motor of claim 1, wherein:
the outer rotor motor comprises an anti-blocking cover, the anti-blocking cover is in clearance fit with the inner peripheral wall of the fan cover, and a plurality of filter holes are formed in the anti-blocking cover in a distributed mode.
8. The active heat dissipation external rotor motor of claim 7, wherein:
a second inner step is arranged on the inner circle side wall of the fan cover, and the anti-blocking cover is connected with the second inner step in a matched mode;
prevent stifled covering and be provided with first pilot hole and second pilot hole, be provided with the third pilot hole on the mount pad, be provided with the fourth pilot hole on the interior round lateral wall of fan cover, first pilot hole with the third pilot hole corresponds the setting, the second pilot hole with the fourth pilot hole corresponds the setting.
9. The active heat dissipation outer rotor motor according to any one of claims 1 to 8, wherein:
the outer rotor motor comprises a motor cover, the stator and the rotor are both positioned between the motor cover and the fan assembly, a second through hole is formed in the center of the motor cover, and the rotating shaft is positioned in the second through hole;
the motor cover is provided with a plurality of second radiating grooves, and the second radiating grooves are radial from the second through holes.
10. Unmanned aerial vehicle, its characterized in that: the unmanned aerial vehicle comprises the active heat dissipation outer rotor motor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021037275.XU CN212258576U (en) | 2020-06-08 | 2020-06-08 | Active heat dissipation external rotor motor and unmanned aerial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021037275.XU CN212258576U (en) | 2020-06-08 | 2020-06-08 | Active heat dissipation external rotor motor and unmanned aerial vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN212258576U true CN212258576U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021037275.XU Active CN212258576U (en) | 2020-06-08 | 2020-06-08 | Active heat dissipation external rotor motor and unmanned aerial vehicle |
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| Country | Link |
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| CN (1) | CN212258576U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115118063A (en) * | 2022-07-27 | 2022-09-27 | 珠海市双捷科技有限公司 | External rotor motor heat radiation structure |
| WO2023273560A1 (en) * | 2021-06-30 | 2023-01-05 | 江苏瑞力泰铁路科技有限公司 | Outer rotor motor |
| CN115833479A (en) * | 2022-11-16 | 2023-03-21 | 南昌三瑞智能科技有限公司 | Brushless motor heat abstractor brushless motor |
-
2020
- 2020-06-08 CN CN202021037275.XU patent/CN212258576U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023273560A1 (en) * | 2021-06-30 | 2023-01-05 | 江苏瑞力泰铁路科技有限公司 | Outer rotor motor |
| CN115118063A (en) * | 2022-07-27 | 2022-09-27 | 珠海市双捷科技有限公司 | External rotor motor heat radiation structure |
| CN115118063B (en) * | 2022-07-27 | 2023-02-17 | 珠海市双捷科技有限公司 | External rotor motor heat radiation structure |
| CN115833479A (en) * | 2022-11-16 | 2023-03-21 | 南昌三瑞智能科技有限公司 | Brushless motor heat abstractor brushless motor |
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