CN219394624U - Magnetic ring integrated structure for small motor - Google Patents
Magnetic ring integrated structure for small motor Download PDFInfo
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- CN219394624U CN219394624U CN202320155306.9U CN202320155306U CN219394624U CN 219394624 U CN219394624 U CN 219394624U CN 202320155306 U CN202320155306 U CN 202320155306U CN 219394624 U CN219394624 U CN 219394624U
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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
Abstract
The utility model discloses a magnetic ring integrated structure for a small motor, wherein the outer side wall of a stator core is provided with a plurality of first mounting holes, one side of each first mounting hole is provided with a second mounting hole, the inner diameter of each first mounting hole is larger than that of each second mounting hole, and the first mounting holes and the second mounting holes are through holes; the front bracket is arranged on one side of the stator core; the rear bracket is arranged on the other side of the stator core and is provided with a third mounting hole, the third mounting hole is mutually matched with a rotating shaft of the motor, and the rotating shaft is inserted into the third mounting hole; the heat radiation blades are arranged at the tail end of the rotating shaft, the rotating shaft drives the heat radiation blades to rotate when rotating, and a plurality of magnet columns are arranged on the heat radiation blades; the Hall sensor is arranged on the rear bracket and corresponds to the magnet column. The structure can compress the height of the motor, so that the overall size of the motor is smaller, the utilization rate of space is improved, and the miniaturization design of the motor is realized.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a magnetic ring integrated structure for a small motor.
Background
The motor is an electromagnetic device for converting or transmitting electric energy according to the law of electromagnetic induction, and mainly aims to generate driving torque to be used as a power source of electric appliances or various machines. The power supply type is divided into a direct current motor and an alternating current motor according to the type of the working power supply. The direct current motor can be classified into a brushless direct current motor and a brush direct current motor according to a structure and a working principle.
Existing motor drives typically use hall effect sensors to determine motor shaft position so that a motor controller issues control commands in time, and the hall sensors detect the magnetic field on the shaft to obtain the motor shaft position. Most of the existing magnetic rings are sleeved on the rotating shaft, when the rotating shaft rotates, the magnetic rings are driven to rotate, the Hall sensor can read rotating data of the rotating shaft according to the change of the magnetic field, but the magnetic rings in the installation mode are used, the positions for installing the magnetic rings are reserved in the rotating shaft of the motor, the design and the processing of the rotating shaft become more complex, the length of the rotating shaft needs to be increased due to the fact that the magnetic rings are installed in the rotating shaft, the height of the motor is increased, the whole size of the motor is enlarged, and the installation space of other elements is occupied.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a magnetic ring integrated structure for a small motor, which can compress the height of the motor, so that the overall size of the motor is smaller, the space utilization rate is improved, and the miniaturization design of the motor is realized.
According to an embodiment of the first aspect of the utility model, the magnetic ring integrated structure for the small motor comprises a stator core, a plurality of first mounting holes are formed in the outer side wall of the stator core, a second mounting hole is formed in one side of the first mounting hole, the inner diameter of the first mounting hole is larger than that of the second mounting hole, and the first mounting hole and the second mounting hole are through holes;
a front bracket installed at one side of the stator core;
the rear bracket is arranged on the other side of the stator core and is provided with a third mounting hole, the third mounting hole is mutually matched with a rotating shaft of the motor, and the rotating shaft is inserted into the third mounting hole;
the heat dissipation blade is arranged at the tail end of the rotating shaft, the rotating shaft drives the heat dissipation blade to rotate when rotating, and a plurality of magnet columns are arranged on the heat dissipation blade;
and the Hall sensor is arranged on the rear bracket and corresponds to the magnet post.
The magnetic ring integrated structure for the small motor has at least the following beneficial effects: the stator core is provided with the first mounting hole and the second mounting hole, the front support and the rear support are fixed on the stator core, the mounting effect is firm, the front support and the rear support can be fixed on the stator core without using complex tools, the heat radiating blade is provided with the magnet column, the Hall sensor is arranged below the magnet column, when the magnet column passes through the Hall sensor, the rotating speed of the rotating shaft can be measured by utilizing the mutual matching of the magnet column and the Hall sensor, the magnet column is integrated on the heat radiating blade, the mounting space of the motor can be saved, the mounting position of a magnetic ring is not required to be additionally arranged on the rotating shaft, the processing procedure of the rotating shaft can be reduced, the structural design of a product is optimized, the total length of the motor is shortened, the space required by motor mounting is reduced, the miniaturized design of the motor is facilitated, and the aesthetic feeling of the product is improved.
According to some embodiments of the utility model, the magnet posts are uniformly distributed along the circumference of the radiating fin, and through holes are formed in the magnet posts. The evenly distributed magnet columns can ensure the stable operation of the radiating blades and reduce the noise of the radiating blades.
According to some embodiments of the utility model, the central axes of the magnet posts are on the same outer diameter of the heat sink fin. The stability of the radiating blade in the rotating process is ensured.
According to some embodiments of the utility model, the magnet post is higher than the highest position of the radiating blade, and the difference between the highest position of the magnet post and the highest position of the radiating blade is A, so that the difference between the distance A and the distance A is more than or equal to 2mm and less than or equal to 15mm is satisfied. The processing of magnet post can be made things convenient for to set up certain height, can not be blocked by radiator blade after guaranteeing the processing of magnet post, and the magnet post sets up certain limit for height and also can avoid the magnet post to influence radiator blade's radiating effect.
According to some embodiments of the utility model, the hall sensor is mounted horizontally to the rear bracket. Can better mutually adapt with the magnet post.
According to some embodiments of the utility model, the bottoms of the front bracket and the rear bracket are provided with set screws, the set screws are matched with the second mounting holes, and the set screws are inserted into the second mounting holes. The effect of prepositioning can be realized by using the set screw, and the installation is more convenient.
According to some embodiments of the present utility model, the bottoms of the front bracket and the rear bracket are respectively provided with a threaded opening, the sizes of the threaded openings are matched with those of the first mounting holes, the front bracket and the rear bracket are mounted on the stator core through the threaded openings, projections of the threaded openings and the first mounting holes in the vertical direction are overlapped with each other, and the threaded openings and the first mounting holes are connected through bolts. The front support, the stator core and the rear support can be directly fixed together by using bolts, so that the installation efficiency can be improved, and the installation effect is firm.
According to some embodiments of the utility model, the magnet post and the heat sink fin are integrally formed. The integrated design is used, so that the structural strength of the radiating fin can be further improved.
According to some embodiments of the utility model, the heat sink fin has an arcuate curved design. The wind guiding effect of the fan blade can be improved, and the heat dissipation performance of the heat dissipation blade is improved.
According to some embodiments of the utility model, the heat sink blade is a right-handed blade.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a three-dimensional schematic view of an integrated structure of a magnetic ring for a small-sized motor according to an embodiment of the present utility model;
fig. 2 is a three-dimensional schematic view of a rear bracket mounted on a stator core according to an embodiment of the present utility model;
FIG. 3 is a three-dimensional schematic view of a heat sink blade according to an embodiment of the present utility model;
FIG. 4 is a three-dimensional schematic view of a rear bracket according to an embodiment of the present utility model;
fig. 5 is a three-dimensional schematic view of a stator core according to an embodiment of the present utility model.
Reference numerals: a heat radiation fin 100; a stator core 110; a rear bracket 120; a front bracket 130; a hall sensor 140; a rotation shaft 150; a third mounting hole 160; a magnet column 170; a set screw 180; a threaded aperture 190; a first mounting hole 200; and a second mounting hole 210.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 3, fig. 1 is a three-dimensional schematic diagram of an integrated structure of a magnetic ring for a small-sized motor according to an embodiment of the present utility model, an outer sidewall of a stator core 110 is provided with a plurality of first mounting holes 200, one side of the first mounting holes 200 is provided with a second mounting hole 210, an inner diameter of the first mounting holes 200 is larger than that of the second mounting holes 210, and the first mounting holes 200 and the second mounting holes 210 are through holes; the front bracket 130 is installed at one side of the stator core 110; the rear bracket 120 is mounted on the other side of the stator core 110, the rear bracket 120 is provided with a third mounting hole 160, the third mounting hole 160 is mutually matched with the rotating shaft 150 of the motor, and the rotating shaft 150 is spliced in the third mounting hole 160; the heat dissipation blade 100 is mounted at the end of the rotating shaft 150, and when the rotating shaft 150 rotates, the heat dissipation blade 100 is driven to rotate, and a plurality of magnet columns 170 are arranged on the heat dissipation blade 100; the hall sensor 140 is mounted on the rear bracket 120, and the hall sensor 140 is provided corresponding to the magnet post 170. The first mounting hole 200 and the second mounting hole 210 are used for fixing the front bracket 130 and the rear bracket 120 on the stator core 110, the magnet post 170 is arranged on the cooling fin 100, the magnet post 170 and the Hall sensor 140 are matched with each other to measure the rotating speed of the rotating shaft 150, the magnet post 170 is integrated on the cooling fin 100, the mounting space of a motor can be saved, a magnetic ring is not required to be additionally mounted on the rotating shaft 150, the processing procedure for mounting the rotating shaft 150 can be reduced, the miniaturization design of the motor is realized, and the aesthetic feeling of a product can be improved. It is understood that the shape of the magnet post 170 may be any of a cylinder, a cuboid, or a cube, and only needs to satisfy the requirement of being able to quota the hall sensor 140 and measure the rotation speed of the rotation shaft 150.
Referring to fig. 3, the magnet posts 170 are uniformly distributed along the circumferential direction of the heat sink fin 100, and through holes are provided on the magnet posts 170. The uniformly distributed magnet posts 170 can ensure smooth operation of the heat sink fin 100, and can reduce noise of the heat sink fin 100. The center axis of the magnet post 170 is on the same outer diameter of the heat sink fin 100. Ensuring stability during rotation of the heat sink fin 100. Because the rotation speed is relatively high during the heat dissipation rotation, the magnet columns 170 must be symmetrically distributed, so that the heat dissipation blade 100 can rotate stably.
The magnet column 170 is higher than the highest position of the heat radiation blade 100, and the difference between the highest position of the magnet column 170 and the highest position of the heat radiation blade 100 is A, so that the A is more than or equal to 2mm and less than or equal to 15mm. The processing of the magnet column 170 can be facilitated by setting a certain height, the magnet column 170 is ensured not to be blocked by the radiating fin 100 after being processed, and the magnet column 170 is also prevented from influencing the radiating effect of the radiating fin 100 by setting a certain height limit. The hall sensor 140 is horizontally mounted to the rear bracket 120. Can better be mutually adapted to the magnet post 170 so that the measured rotational speed is more accurate.
Referring to fig. 4 and 5, the bottoms of the front and rear brackets 130 and 120 are provided with set screws 180, the set screws 180 are matched with the second mounting holes 210, and the set screws 180 are inserted into the second mounting holes 210. The effect of the preset position can be realized by using the set screw 180, and the installation is more convenient. The bottoms of the front bracket 130 and the rear bracket 120 are respectively provided with a threaded opening 190, the sizes of the threaded openings 190 are matched with those of the first mounting holes 200, the front bracket 130 and the rear bracket 120 are mounted on the stator core 110 through the threaded openings 190, projections of the threaded openings 190 and the first mounting holes 200 in the vertical direction are overlapped with each other, and the threaded openings 190 and the first mounting holes 200 are connected through bolts. The front bracket 130, the stator core 110 and the rear bracket 120 can be directly fixed together by bolts, so that the installation efficiency can be improved, and the installation effect is firm. With the design, the front bracket 130 and the rear bracket 120 can be fixed on the stator core 110 by using a single bolt, the installation is simple, the centering of the front bracket 130 and the rear bracket 120 is better, and the later procedures can be reduced. The positioning screw 180 can be used for initially positioning the front bracket 130 and the rear bracket 120, and the later installation of the bolts is simpler, so that the labor cost can be reduced.
The magnet post 170 and the heat sink fin 100 are integrally formed, and the structural strength of the heat sink fin 100 can be further improved by using an integrally formed design. The heat sink fin 100 has an arc-shaped curved design. The air guiding effect of the fan blade can be improved, and the heat radiation performance of the heat radiation blade 100 can be improved. The heat sink fin 100 is a right-hand fan blade.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (10)
1. A magnetic ring integrated structure for a small-sized motor, comprising:
the stator core is provided with a plurality of first mounting holes on the outer side wall, a second mounting hole is formed in one side of the first mounting holes, the inner diameter of the first mounting holes is larger than that of the second mounting holes, and the first mounting holes and the second mounting holes are through holes;
a front bracket installed at one side of the stator core;
the rear bracket is arranged on the other side of the stator core and is provided with a third mounting hole, the third mounting hole is mutually matched with a rotating shaft of the motor, and the rotating shaft is inserted into the third mounting hole;
the heat dissipation blade is arranged at the tail end of the rotating shaft, the rotating shaft drives the heat dissipation blade to rotate when rotating, and a plurality of magnet columns are arranged on the heat dissipation blade;
and the Hall sensor is arranged on the rear bracket and corresponds to the magnet post.
2. The magnet ring integrated structure for a small-sized motor according to claim 1, wherein the magnet posts are uniformly distributed along the circumferential direction of the heat radiating fin, and through holes are provided in the magnet posts.
3. A magnetic ring integrated structure for a small-sized motor as claimed in claim 2, wherein the central axis of the magnet post is on the same outer diameter of the heat radiating fin.
4. A magnetic ring integrated structure for a small-sized motor according to claim 3, wherein the magnet post is higher than the highest position of the heat dissipation blade, and the difference between the highest position of the magnet post and the highest position of the heat dissipation blade is a, so that a is 2mm < a < 15mm.
5. A magnetic ring integrated structure for a small-sized motor as claimed in claim 1, wherein the hall sensor is horizontally installed to the rear bracket.
6. The magnet ring integrated structure for a small-sized motor according to claim 1, wherein positioning screws are arranged at bottoms of the front bracket and the rear bracket, the positioning screws are matched with the second mounting holes, and the positioning screws are inserted into the second mounting holes.
7. The magnet ring integrated structure for a small-sized motor according to claim 6, wherein screw holes are formed in bottoms of the front bracket and the rear bracket, the sizes of the screw holes are matched with those of the first mounting holes, the front bracket and the rear bracket are mounted on the stator core through the screw holes, projections of the screw holes and the first mounting holes in the vertical direction are overlapped with each other, and the screw holes and the first mounting holes are connected through bolts.
8. A magnetic ring integrated structure for a small-sized motor as claimed in claim 1, wherein the magnet post and the heat radiating fin are integrally formed.
9. A magnetic ring integrated structure for a small-sized motor as claimed in claim 1, wherein the heat radiating fin has an arc-shaped curved design.
10. The magnetic ring integrated structure for a small-sized motor according to claim 9, wherein the heat radiating fin is a right-handed fan blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320155306.9U CN219394624U (en) | 2023-01-18 | 2023-01-18 | Magnetic ring integrated structure for small motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320155306.9U CN219394624U (en) | 2023-01-18 | 2023-01-18 | Magnetic ring integrated structure for small motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219394624U true CN219394624U (en) | 2023-07-21 |
Family
ID=87198303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320155306.9U Active CN219394624U (en) | 2023-01-18 | 2023-01-18 | Magnetic ring integrated structure for small motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219394624U (en) |
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2023
- 2023-01-18 CN CN202320155306.9U patent/CN219394624U/en active Active
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