CN219643687U - Axial flux motor and vehicle - Google Patents
Axial flux motor and vehicle Download PDFInfo
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- CN219643687U CN219643687U CN202321222962.2U CN202321222962U CN219643687U CN 219643687 U CN219643687 U CN 219643687U CN 202321222962 U CN202321222962 U CN 202321222962U CN 219643687 U CN219643687 U CN 219643687U
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- magnetic steel
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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
- 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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Abstract
The utility model belongs to the technical field of motors, and particularly relates to a motor and a vehicle. The axial flux motor comprises a rotor and a stator, wherein the rotor comprises a rotor core and a plurality of magnetic steels arranged on the rotor core, the plurality of magnetic steels are arranged at intervals along the circumferential direction of the rotor core, and the stator comprises a plurality of stator teeth arranged at intervals along the circumferential direction; the side of the magnetic steel facing the stator teeth is provided with a first surface, the side of the stator teeth facing the magnetic steel is provided with a second surface, an air gap is formed between the first surface and the second surface, the air gap comprises a first air gap part positioned between the radial inner side of the magnetic steel and the stator and a second air gap part positioned between the radial outer side of the magnetic steel and the stator, and the width of the first air gap part is smaller than that of the second air gap part. According to the utility model, the first surface and the second surface which are not parallel are arranged, so that the rotor is attracted to be close to the magnetic steel, the first air gap part and the second air gap part tend to be equal, the air gap is uniform, and the situation that the rotor collides with the magnetic steel is avoided.
Description
Technical Field
The utility model belongs to the technical field of motors, and particularly relates to an axial flux motor and a vehicle.
Background
In the existing axial flux motor, most of the stator and the rotor are of circular ring-shaped columnar structures, the magnetic steel is of a sector columnar shape, one face of the magnetic steel is adhered to the rotor core, and the other face of the magnetic steel faces the stator core.
In the existing axial flux motor, the air gap between the magnetic steel and the stator is smaller and more uniform, but is influenced by the magnetic attraction force between the magnetic steel and the stator, the rotor can deform, the air gap between the magnetic steel and the stator is uneven, the risk of collision between the magnetic steel and the stator exists, and electromagnetic noise is influenced.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: aiming at the problem that the existing magnetic steel and the stator are uneven in air gap and the risk of collision between the magnetic steel and the stator exists, the axial flux motor and the vehicle are provided.
In order to solve the technical problems, in one aspect, an embodiment of the present utility model provides an axial flux motor, including a rotor and a stator, where the rotor includes a rotor core and a plurality of magnetic steels disposed on the rotor core, the plurality of magnetic steels are disposed at intervals along a circumferential direction of the rotor core, and the stator includes a plurality of stator teeth disposed at intervals along the circumferential direction;
the side of the magnetic steel facing the stator teeth is provided with a first surface, the side of the stator teeth facing the magnetic steel is provided with a second surface, an air gap is formed between the first surface and the second surface, the air gap comprises a first air gap part positioned between the radial inner side of the magnetic steel and the stator and a second air gap part positioned between the radial outer side of the magnetic steel and the stator, and the width of the first air gap part is smaller than that of the second air gap part in the axial direction.
Optionally, the width of the air gap gradually increases radially outward of the magnetic steel.
Optionally, the angle between the first surface and the second surface is an acute angle.
Optionally, the normal direction of the first surface is parallel to the central axis of the rotor core, and an included angle between the normal direction of the second surface and the central axis of the rotor core is an acute angle.
Optionally, an included angle between a normal direction of the first surface and a central axis of the rotor core is an acute angle, and a normal direction of the second surface is parallel to the central axis of the rotor core.
Optionally, an included angle between the normal direction of the first surface and the central axis of the rotor core is an acute angle, and an included angle between the normal direction of the second surface and the rotor core is an acute angle.
Optionally, the magnetic steel has a fourth surface opposite to the first surface, and the fourth surface is attached to the rotor core.
Optionally, the stator teeth include a tooth body and a tooth shoe, the second surface is a surface of the tooth shoe facing the magnetic steel, the tooth shoe has a third surface opposite to the second surface, the third surface faces the tooth body, and a normal direction of the third surface is parallel to a central axis of the rotor core.
Optionally, the rotor core includes a first rotor core and a second rotor core, the magnetic steel includes a first magnetic steel and a second magnetic steel, the first magnetic steel is disposed on the first rotor core, the second magnetic steel is disposed on the second rotor core, and the stator is disposed between the first magnetic steel and the second magnetic steel;
the tooth boots comprise a first tooth boot and a second tooth boot, the tooth body is connected between the first tooth boot and the second tooth boot, an included angle between the first surface of the first magnetic steel and the second surface of the first tooth boot is an acute angle, and an included angle between the first surface of the second magnetic steel and the second surface of the second tooth boot is an acute angle.
In another aspect, an embodiment of the present utility model provides a vehicle comprising an axial flux electric machine as described above.
According to the axial flux motor provided by the embodiment of the utility model, the first surface and the second surface which are not parallel are arranged, so that an air gap between the stator and the rotor presents a structure with small width of a first air gap part and large width of a second air gap part, after being influenced by magnetic attraction, the outer diameter of the rotor is attracted to approach the magnetic steel, so that the width of the first air gap part and the width of the second air gap part tend to be equal, the first surface and the second surface are approximately parallel, the air gap is uniform, the situation that the air gap at the outer diameter caused by deformation of the rotor is too small to collide with the magnetic steel can be avoided, the risk of sweeping a bore is avoided, and meanwhile, the motor noise is also facilitated to be optimized.
Drawings
FIG. 1 is a schematic illustration of an axial-flux motor provided in accordance with an embodiment of the present utility model;
FIG. 2 is a schematic illustration of a stator tooth provided in accordance with an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a magnetic steel according to an embodiment of the present utility model;
FIG. 4 is a schematic view of a stator tooth provided in accordance with another embodiment of the present utility model;
FIG. 5 is a schematic view of a magnetic steel according to another embodiment of the present utility model;
fig. 6 is a schematic illustration of an air gap of an axial-flux motor provided by an embodiment of the present utility model.
Reference numerals in the specification are as follows:
1. a rotor; 11. a rotor core; 11a, a first rotor core; 11b, a second rotor core; 12. magnetic steel; 12a, first magnetic steel; 12b, second magnetic steel; 121. a first surface; 122. a fourth surface;
2. a stator; 21. stator teeth; 211. a tooth body; 212. a first tooth shoe; 213. a second tooth shoe; 214. a second surface; 215. a third surface; 22. a stator winding;
3. an air gap.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 to 6, an axial flux motor according to an embodiment of the present utility model includes a rotor 1 and a stator 2, the rotor 1 includes a rotor core 11 and a plurality of magnetic steels 12 disposed on the rotor core 11, the plurality of magnetic steels 12 are disposed at intervals along a circumferential direction of the rotor core 11, and the stator 2 includes a plurality of stator teeth 21 disposed at intervals along the circumferential direction. The side of the magnetic steel 12 facing the stator teeth 21 has a first surface 121, the side of the stator teeth 21 facing the magnetic steel 12 has a second surface 214, the first surface 121 and the second surface 214 are not parallel, an air gap 3 is formed between the first surface 121 and the second surface 214, the air gap 3 includes a first air gap portion located between a radially inner side of the magnetic steel 12 and the stator 2 and a second air gap portion located between a radially outer side of the magnetic steel 12 and the stator 2, and a width of the first air gap portion is smaller than a width of the second air gap portion in an axial direction.
The magnetic steel 12 is magnetic, and has natural magnetic attraction to ferromagnetic materials such as the stator teeth 21, the magnetic attraction is in positive correlation with the diameter of the axial flux motor, the magnetic steel 12 is in a fan shape, the larger the diameter is, the larger the magnetic attraction surface of the magnetic steel 12 facing the stator 2 is, namely, the magnetic attraction between the radial outer side of the magnetic steel 12 and the stator is larger than the magnetic attraction between the radial inner side of the magnetic steel 12 and the stator, so that under the action of the fixed stator 2, the larger the magnetic attraction is, the more serious the deformation of the rotor 1 is influenced by the magnetic attraction, the sizes of the air gaps 3 at the inner diameter and the outer diameter of the stator 2 and the rotor 1 are different, the air gap 3 at the outer diameter is smaller than the air gap 3 at the inner diameter, the air gap 3 in the radial non-uniformity is continuously changed along with the operation of the motor, and a large amount of harmonic magnetic density is caused, the pulsation and noise of the motor are caused, and the motor is directly damaged when the stator is seriously.
According to the axial flux motor provided by the embodiment of the utility model, the first surface 121 and the second surface 214 which are not parallel are arranged, so that the air gap 3 between the stator 2 and the rotor 1 has the structure that the width of the first air gap part is small, the width of the second air gap part is large, after being influenced by magnetic attraction, the outer diameter of the rotor 1 is attracted towards the magnetic steel 12, the width of the first air gap part and the width of the second air gap part tend to be equal, the first surface 121 and the second surface 214 are approximately parallel, the distance between the two planes is almost equal everywhere, the air gap 3 is uniform, the situation that the air gap 3 at the outer diameter is too small to collide with the magnetic steel 12 due to the deformation of the rotor 1 can be avoided, the risk of sweeping a bore is avoided, and the motor noise is also facilitated to be optimized.
In an embodiment, as shown in fig. 6, the radial cross-section of the magnetic steel 12 is fan-shaped, and the magnetic attraction between the magnetic steel 12 and the stator teeth 21 is gradually increased along the radial outward direction, so, preferably, the width of the air gap 3 is gradually increased along the radial outward direction of the magnetic steel 12, so that the width of the air gap 3 is gradually increased along with the gradual increase of the magnetic attraction surface of the magnetic steel 12 in the radial direction, thereby the change of the air gap 3 caused by the demagnetizing attraction force is resisted, the air gap 3 is basically kept uniform, the distance between the first surface 121 and the second surface 214 is almost equal everywhere, and the non-uniform condition of the air gap 3 caused by the non-uniform magnetic attraction force is avoided.
In an embodiment, as shown in fig. 6, the included angle between the first surface 121 and the second surface 214 is an acute angle, and the first surface 121 and the second surface 214 are not parallel to each other, so that the width of the air gap 3 can gradually increase in the radial direction.
In an embodiment, as shown in fig. 2 and 3, the normal direction of the first surface 121 is parallel to the central axis of the rotor core 11, the first surface 121 is perpendicular to the central axis of the rotor core 11, the magnetic steel 12 has a fourth surface 122 opposite to the first surface 121, and the fourth surface 122 is attached to the rotor core 11, and at this time, the first surface 121 and the fourth surface 122 are parallel to each other. The angle between the normal direction of the second surface 214 and the central axis of the rotor core 11 is acute, the second surface 214 is inclined with respect to the first surface 121, and an acute angle is formed between the first surface 121 and the second surface 214, so that the air gap 3 gradually increases in the radial direction.
In another embodiment, as shown in fig. 4 and 5, an included angle between a normal direction of the first surface 121 and a central axis of the rotor core 11 is an acute angle, the magnetic steel 12 has a fourth surface 122 disposed opposite to the first surface 121, the fourth surface 122 is attached to the rotor core 11 such that a thickness of the magnetic steel 12 gradually decreases in a radial direction, a normal direction of the second surface 214 is parallel to the central axis of the rotor core 11, the second surface 214 is perpendicular to the central axis of the rotor core 11, the first surface 121 is disposed obliquely, and an acute angle is formed between the first surface 121 and the second surface 214, so that the air gap 3 gradually increases in the radial direction.
In another embodiment, not shown, the angle between the normal direction of the first surface 121 and the central axis of the rotor core 11 is an acute angle, the magnetic steel 12 has a fourth surface 122 disposed opposite to the first surface 121, the fourth surface 122 is attached to the rotor core 11, so that the thickness of the magnetic steel 12 gradually decreases along the radial direction, the angle between the normal direction of the second surface 214 and the central axis of the rotor core 11 is an acute angle, the first surface 121 and the second surface 214 are both disposed obliquely, and the width of the air gap 3 between the first surface 121 and the second surface 214 gradually increases.
In an embodiment, as shown in fig. 2 and 4, the stator teeth 21 include a tooth body 211 and a tooth shoe, the tooth shoe is connected to the tooth body 211, the second surface 214 is a surface of the tooth shoe facing the magnetic steel 12, the tooth shoe has a third surface 215 opposite to the second surface 214, the third surface 215 is disposed toward the tooth body 211, a normal direction of the third surface 215 is parallel to a central axis of the rotor core 11, and the third surface 215 is perpendicular to the central axis of the rotor core 11.
In one embodiment, as shown in fig. 6, the rotor core 11 includes a first rotor core 11a and a second rotor core 11b, the magnetic steel 12 includes a first magnetic steel 12a and a second magnetic steel 12b, the first magnetic steel 12a is disposed on the first rotor core 11a, a fourth surface 122 of the first magnetic steel 12a is attached to the first rotor core 11a, the second magnetic steel 12b is disposed on the second rotor core 11b, a fourth surface 122 of the second magnetic steel 12b is attached to the second rotor core 11b, the stator 2 is disposed between the first magnetic steel 12a and the second magnetic steel 12b, and the air gap 3 is formed between the first magnetic steel 12a and the stator teeth 21 and between the second magnetic steel 12b and the stator teeth 21. The angle between the first surface 121 of the first magnetic steel 12a and the second surface 214 of the first tooth shoe 212 is acute, and the angle between the first surface 121 of the second magnetic steel 12b and the second surface 214 of the second tooth shoe 213 is acute.
As shown in fig. 2 and 4, the tooth shoe includes a first tooth shoe 212 and a second tooth shoe 213, and the tooth body 211 is connected between a third surface 215 of the first tooth shoe 212 and a third surface 215 of the second tooth shoe 213, and the third surface 215 of the first tooth shoe 212 and the third surface 215 of the second tooth shoe 213 are parallel to each other and perpendicular to the central axis of the rotor core 11.
When the thickness of the first tooth shoe 212 and the thickness of the second tooth shoe 213 are gradually reduced in the radial direction while the width of the air gap 3 is gradually increased, the thickness of the first magnetic steel 12a is maintained constant or gradually reduced in the radial direction, and the thickness of the second magnetic steel 12b is maintained constant or gradually reduced in the radial direction, the second surface 214 of the first tooth shoe 212 is not perpendicular to the central axis of the rotor core 11, and the first surface 121 of the first magnetic steel 12a is perpendicular to the central axis of the rotor core 11 or forms an acute angle, so that the structure in which the width of the air gap 3 between the first tooth shoe 212 and the first magnetic steel 12a is gradually increased can be realized. The second surface 214 of the second tooth shoe 213 is not perpendicular to the central axis of the rotor core 11, and the first surface 121 of the second magnetic steel 12b is perpendicular to the central axis of the rotor core 11 or forms an acute angle, so that a structure in which the width of the air gap 3 between the second tooth shoe 213 and the second magnetic steel 12b gradually increases can be realized.
When the thickness of the first tooth shoe 212, the thickness of the second tooth shoe 213, the thickness of the first magnetic steel 12a, and the thickness of the second magnetic steel 12b are gradually reduced in the radial direction, the tendency of the thickness of the first tooth shoe 212 to be gradually reduced in the radial direction is more gentle, and the tendency of the thickness of the first magnetic steel 12a to be gradually reduced in the radial direction is more gentle, as compared with the case where the thickness of the first tooth shoe 212 and the thickness of the second tooth shoe 213 are gradually reduced in the radial direction, while the thickness of the first magnetic steel 12a is kept unchanged.
When the thickness of the first tooth shoe 212 remains unchanged in the radial direction and the thickness of the second tooth shoe 213 remains unchanged in the radial direction, the thickness of the first magnetic steel 12a gradually decreases in the radial direction, and the thickness of the second magnetic steel 12b gradually decreases in the radial direction, the second surface 214 of the first tooth shoe 212 is perpendicular to the central axis of the rotor core 11, and the first surface 121 of the first magnetic steel 12a forms an acute angle with the central axis of the rotor core 11, thereby realizing a structure in which the width of the air gap 3 between the first tooth shoe 212 and the first magnetic steel 12a gradually increases. The second surface 214 of the second tooth shoe 213 is perpendicular to the central axis of the rotor core 11, and the first surface 121 of the second magnetic steel 12b forms an acute angle with the central axis of the rotor core 11, thereby realizing a structure in which the width of the air gap 3 between the second tooth shoe 213 and the second magnetic steel 12b gradually increases.
When the thickness of the first tooth shoe 212 is gradually reduced in the radial direction, the thickness of the second tooth shoe 213 is maintained unchanged in the radial direction, and the thickness of the first magnetic steel 12a is maintained unchanged or gradually reduced in the radial direction, and the thickness of the second magnetic steel 12b is gradually reduced in the radial direction, the second surface 214 of the first tooth shoe 212 is not perpendicular to the central axis of the rotor core 11, and the first surface 121 of the first magnetic steel 12a is perpendicular to the central axis of the rotor core 11 or forms an acute angle, a structure in which the width of the air gap 3 between the first tooth shoe 212 and the first magnetic steel 12a is gradually increased can be realized. The second surface 214 of the second tooth shoe 213 is perpendicular to the central axis of the rotor core 11, and the first surface 121 of the second magnetic steel 12b forms an acute angle with the central axis of the rotor core 11, thereby realizing a structure in which the width of the air gap 3 between the second tooth shoe 213 and the second magnetic steel 12b gradually increases.
When the thickness of the first tooth shoe 212 remains unchanged and the thickness of the second tooth shoe 213 is gradually reduced in the radial direction, the thickness of the first magnetic steel 12a is gradually reduced in the radial direction, and the thickness of the second magnetic steel 12b remains unchanged or is gradually reduced in the radial direction, the same is basically the same as the previous case, and the description thereof will not be repeated.
In an embodiment, as shown in fig. 6, the stator 2 further includes a stator winding 22, the stator winding 22 is sleeved on the outer side of the tooth body 211, and the stator winding 22 is located between the first tooth shoe 212 and the second tooth shoe 213.
The rotor core 11 is manufactured by adopting a square structural steel material, forming a circular column shape through machining, manufacturing a fan-shaped column-shaped magnetic steel 12 through a die, wherein the magnetizing direction of the magnetic steel 12 is the plane normal direction of a fan-shaped plane of the magnetic steel 12, processing the first surface 121 of the magnetic steel 12, wherein the normal direction of the processed first surface 121 is at a certain angle or kept parallel to the axial direction of the motor, and the axial height of the magnetic steel 12 is gradually reduced or kept unchanged along the radial direction outwards. And (3) smearing fixed glue on the fourth surface 122 of the magnetic steel 12, adhering the magnetic steel 12 to the rotor core 11 at intervals, and forming the rotor 1 after the glue is solidified.
The stator teeth 21 are made of amorphous materials, the stator teeth 21 are processed into a fan-shaped column shape through a die, then the fan-shaped plane of the tooth shoe of the stator teeth 21 is processed, the normal direction of the second surface 214 of the tooth shoe is at a certain angle or kept parallel to the axial direction, the axial height of the tooth shoe is gradually reduced or kept unchanged along with the radial outward direction, the stator winding 22 is wound with insulating paper, the stator winding 22 is wound on the stator teeth 21, all the stator teeth 21 are circumferentially arranged through a tool, and then resin encapsulation molding is performed to form the stator 2.
The stator 2 formed by encapsulation is fixed on a machine shell, the rotor 1 is fixed on a rotating shaft, the rotating shaft is fixed on the machine shell through a bearing, and the stator 2 and the rotor 1 are assembled.
In another aspect, an embodiment of the present utility model provides a vehicle including the motor of the above embodiment.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. An axial flux motor is characterized by comprising a rotor and a stator, wherein the rotor comprises a rotor core and a plurality of magnetic steels arranged on the rotor core, the magnetic steels are arranged at intervals along the circumferential direction of the rotor core, and the stator comprises a plurality of stator teeth arranged at intervals along the circumferential direction;
the side of the magnetic steel facing the stator teeth is provided with a first surface, the side of the stator teeth facing the magnetic steel is provided with a second surface, an air gap is formed between the first surface and the second surface, the air gap comprises a first air gap part positioned between the radial inner side of the magnetic steel and the stator, and a second air gap part positioned between the radial outer side of the magnetic steel and the stator, and the width of the first air gap part is smaller than the width of the second air gap part in the axial direction.
2. The axial flux electric machine of claim 1, wherein a width of the air gap increases gradually radially outward of the magnetic steel.
3. The axial flux electric machine of claim 2, wherein an included angle between the first surface and the second surface is an acute angle.
4. The axial flux electric machine of claim 2, wherein a normal direction of the first surface is parallel to a central axis of the rotor core, and an angle between a normal direction of the second surface and the central axis of the rotor core is an acute angle.
5. The axial flux electric machine of claim 2, wherein an angle between a normal direction of the first surface and a central axis of the rotor core is acute, and a normal direction of the second surface is parallel to the central axis of the rotor core.
6. The axial flux electric machine of claim 2, wherein an angle between a normal direction of the first surface and a central axis of the rotor core is an acute angle, and an angle between a normal direction of the second surface and the central axis of the rotor core is an acute angle.
7. The axial flux electric machine of claim 4 or 5 or 6, wherein the magnetic steel has a fourth surface disposed opposite the first surface, the fourth surface being attached to the rotor core.
8. The axial flux machine of claim 4 or 5 or 6, wherein the stator teeth include a tooth body and a tooth shoe, the second surface being a surface of the tooth shoe facing the magnetic steel, the tooth shoe having a third surface disposed opposite the second surface, the third surface being disposed toward the tooth body, a normal direction of the third surface being parallel to a central axis of the rotor core.
9. The axial flux electric machine of claim 8, wherein the rotor core includes a first rotor core and a second rotor core, the magnetic steels including a first magnetic steel and a second magnetic steel, the first magnetic steel being disposed on the first rotor core, the second magnetic steel being disposed on the second rotor core, the stator being disposed between the first magnetic steel and the second magnetic steel;
the tooth boots comprise a first tooth boot and a second tooth boot, the tooth body is connected between the first tooth boot and the second tooth boot, an included angle between the first surface of the first magnetic steel and the second surface of the first tooth boot is an acute angle, and an included angle between the first surface of the second magnetic steel and the second surface of the second tooth boot is an acute angle.
10. A vehicle comprising an axial flux electric machine as defined in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321222962.2U CN219643687U (en) | 2023-05-18 | 2023-05-18 | Axial flux motor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321222962.2U CN219643687U (en) | 2023-05-18 | 2023-05-18 | Axial flux motor and vehicle |
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| Publication Number | Publication Date |
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| CN219643687U true CN219643687U (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321222962.2U Active CN219643687U (en) | 2023-05-18 | 2023-05-18 | Axial flux motor and vehicle |
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| CN (1) | CN219643687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117220463A (en) * | 2023-11-07 | 2023-12-12 | 天津九信科技有限公司 | Tripod head motor and stability-increasing tripod head |
-
2023
- 2023-05-18 CN CN202321222962.2U patent/CN219643687U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117220463A (en) * | 2023-11-07 | 2023-12-12 | 天津九信科技有限公司 | Tripod head motor and stability-increasing tripod head |
| CN117220463B (en) * | 2023-11-07 | 2024-03-01 | 天津九信科技有限公司 | Tripod head motor and stability-increasing tripod head |
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